Development /Diffusion of Early Human Societies Essay

The world’s longest river; The Nile, is considered Egypt’s lifeline. This significant physical geographic factor, has contributed to the development of the ancient Egyptians. This country which is located in Africa’s northeast corner, receives very little rainfall throughout the year. As a result, Egypt has relied on the Nile River for its economy. Each year, the Nile floods due to upstream rain, depositing a type of rich black soil called silt, along the river banks. The silt at the river’s mouth forms into a triangular shape, which creates a delta. Most of Egypt’s population clustered in the Nile’s river valley and delta. This river’s yearly floods made these regions so fertile that ancient Egyptians called their country Kemet, or the Black Land. (Bednarz, 2008) Ancient Egypt, one of the world’s first great civilizations, arose along the banks of the Nile. For centuries, geography kept Egypt isolated. Six high waterfalls calle d cataracts, and rapids make the Nile hard to navigate in the south. Desserts surround the Nile in the west and east, and the Mediterranean Sea borders Egypt to the north. People created farming villages along the Nile by about 4000 B.C. Eventually these villages became two kingdoms, Upper Egypt in the south and Lower Egypt at the Nile delta. The Nile Valley provided various grasses and reeds used for huts, sandals, baskets, simple boats, and other products. Ancient Egyptians also dug canals to irrigate their fields and channel the Nile’s water. Each June, floods would leave behind silt in a narrow strip along the flood plain and at the delta. Today, the Aswan High Dam controls the Nile’s flooding and provides year-round irrigation. Since the Aswan High Dam opened in 1970, Egypt has doubled its agricultural production. (Bednarz, 2008) Over the centuries, religions have spread from their points of origin to the rest of the world. All of the world’s major religions began in Asia, and moved to other continents. At first, religious beliefs were carried to different places by followers of the religion or traders. In some lands, traditional religions have been practiced for as long as people have lived in a culture group. The development and spread of beliefs by Egyptian religion, provides an example of the process of diffusion between early human societies. Ancient Egyptians worshiped several deities (gods or goddesses), and considered their pharaoh leaders to be earthly versions of them. During the New Kingdom period of Egypt, a pharaoh known as Akhenaton, promoted the worship of only one deity, the sun god Aton.

Ex- football player Kavin Plank Essay

Under armor was founded by American ex- football player Kavin Plank in 1996. Its headquarters are in Baltimore, Maryland, USA. Plank started the business in his grandmother’s basement. The word of mouth publicity brought revenue and ultimately in two years time Plank started reaping profit. The main objective of the company was to design a superior quality t- shirt which instead of absorbing sweat, provides perspiration and compression. But it ended up producing various other sports products such as footwear, apparel and accessories. Armor happens to be the designer of performance apparel which it claims would maintain body temperature and improve performance. (Under Armour  ® 2010) Under Armour UA’s mission is to make the customer feel comfortable while wearing its products. Its aim is to make all athletes feel better in their uniforms with the help of science and innovation. Providing comfort to the customers is the first and foremost priority of UA. For that purpose, Heat Gear and Cold Gear products were introduced which would serve the purpose of ease and satisfy the athletes during the calisthenics, practice or course of game. (Under Armour  ® 2010) Products, goods and services The products range from t-shirts to footwear and accessories. These categories are further extended to all types of sportswear. You name the sport (from baseball to hunting) and you can find the custom design outfits and footwear along with accessories required for that sport. The company introduced Heat Gear, Cold Gear and AllseasonGear products and various other products to entice the customers. (Under Armour  ® 2010) Marketing Strategy and Position in the market Under Armour understood the market at the start of the business. The word of mouth publicity at small scale to ignite the marketing process for a relatively new company was good enough to bring in customers. Till date the company sponsors events such as Under Armour High school All- American Football Game and Senior Bowl. (Ayala 2008) Under Armour also sponsored the ESPYs. At the event, the company also managed to get leads on a pilot and two movies as well. It sponsors various college teams for publicity. The commercials and punch line are catchy and attract many customers. Under Armour products could also been in Video Games. In Flight Night 3, Dallas Cowboy player and spokesperson Eric ‘Big E’ was among the Fighters game players could choose to be. Their marketing strategy is strong and has provided them powerful position in the market. (Walker 2008) Competitors The company saw downfall in 2008. According to today’s financial news the company’s competition is sinking. In 2009 UA made Fiscal Fourth Quarter results’ announcement that are down nearly half of where they were this time next year. Shares of Gilden Active wear and Lululemon went down by 30% and 20% respectively. (Financial news 2008) Luckily, today they are flourishing at increasing speed. The competition and hard time was beneficial in this regard. Their hard work is paying them off. The biggest competitors of UA are Colm and Nike. UA is increasing pace to reap as much revenue as Nike is. Its revenue was calculated to be approximately $885 million a year in contrast to Nike’s $19 billion this year. (Wikinvest 2010) Bibliography About Under Armour, Underarmour. com, Under Armour  ®, 2010, web, July 18, 2010 from http://www. underarmour. com/shop/us/en/affiliate-home Ayala, V. ‘Under Armour: Solid Growth Story’, Seeking Alpha, July 2008, web, July 18, 2010 http://seekingalpha. com/article/87622-under-armour-solid-growth-story-more-visibility-needed ‘Under Armour’s competition sinks’, Today’s Financial News, December 11, 2008, web, July 18, 2010 http://www. todaysfinancialnews. com/us-stocks-and-markets/under-armours-nyseua-competition-sinks-6437. html Walker, K. Andrea, Commercial Alert, ‘Under Armour in public eye’, July 24, 2008, web , July 18, 2010, http://www. commercialalert. org/issues/culture/product-placement/under-armour-in-public-eye Under Armour (UA), Wikinvest. com, Wikinvest, 2010, web, July 17, 2010 from http://www. wikinvest. com/stock/Under_Armour_(UA)

Minimum age for social networking sites Research Paper

Minimum age for social networking sites - Research Paper Example In this case, â€Å"inappropriate† means that the dangers outweigh the benefits of having an account on one of these sites. There are many dangers associated with these SNSs. One of the dangers is that these social networking sites often display sexual content. A content analysis of MySpace in 2006 found that 59% of the profiles on that site had photos that were sexual or risque, while 56% of the profiles had at least some profanity in them (Nyland, et al., 2007). Moreover, there is a general fear that sexual predators are lurking on-line – a 2008 study revealed that 4% of young people encountered unwanted sexual advances on an SNS (Ybarra & Mitchell, 2008, p. e350) - although at least one commentator believes that this fear is overblown, and that tech-savvy teenagers have found ways to thwart these predators by adjusting their privacy settings and their on-line behavior (Tynes, 2007, p. 582). Cyberbullying, which is defined as repeated harmful contact that is perpetrated by cell phone, e-mail or through an SNS, is another danger that young people may face on these sites (Mesch, 2009, p. 288). At the same time, there is evidence that young adults – ages 18 through 25 – benefit greatly from these websites. Research indicates that this is the period of life where long-term social skills are developed, skills that are essential to develop relationships and find careers. SNSs are important in this development, as they help the young person find new relationships and strengthen existing ones (Steinfeld, et al., 2008, p. 435). These relationships are integral in attaining â€Å"social capital,† which refers to the benefits an individual receives from his or her social connections, and develop psycho-socially (Steinfeld, et al., 2008, p. 435). Part of this development is the fact that shy young people often do not feel the same sense of awkwardness and shyness on-line that he or she feels in the

Tintern abbey ireland Essay Example | Topics and Well Written Essays - 1250 words

Tintern abbey ireland - Essay Example Indeed, one's uninvited thoughts can express themselves as beautiful, nostalgic, lyrical recollections as is the case with William Wordsworth's "Tintern Abbey," a poem inspired by the thoughts which came to his mind upon his visitation and re-visitation of Tintern Abbey. Reading through the poem, one feels that Wordsworth is leading one by the hand, taking one on a walk through the abbey grounds and, more so, through Wordsworth's life and his thoughts - the thoughts which had crept unbidden into his mind when gazing upon, and walking through, Tintern Abbey. Halfway through the poem, midway through this guided tour, however, I realized that I did not need to take the "walk" with Wordsworth, because I had been on the walk myself. I decided to scour my computer for images from my senior trip to Ireland and was delighted when I uncovered the photos of my experience buried deep within the cavernous depths of a black hole I call my MacBook. I then continued reading the rest of the poem as I glanced up every so often at the image plastered on my glass screen. In my dim dorm room, the image seemed to emerge out of the screen and back into my mind. I could actually see Tintern Abbey the way I saw it that day in Ireland. Over a year later, Wordsworth's poem a nd the photos of my trip brought the feelings I had felt and the thoughts I had thought of that day as I gazed upon Tintern Abbey and walked through its grounds, to mind; thoughts and feelings which had been buried deep under more recent ordeals and experiences, came rushing to the fore. Wordsworth's words had not only drawn me into his mind and his feelings but had forced me to recall my own memories of that day. In so doing, I found myself questioning the purpose of this poem. What is it that Wordsworth wanted us, his readers to see, think of and experience Did I, just over a year ago, experience the same walk which Wordsworth had almost five centuries ago Was time repeating itself and were experiences being replicated across the centuries The answer to these questions lay hidden in Wordsworth's poem and in my own memories. I, therefore, had to examine both, much more critically than I had been doing. "Composed A Few Miles above Tintern Abbey, On Revisiting the Banks of the Wye during a Tour, July 13, 1798" is divided into stanzas that I believe manifest Wordsworth's thought process as he sorts through memories and new revelations when in Tintern Abbey. Wordsworth begins the poem after revealing that it has been five years since his last visit to Tintern. Yet, it is evident that the memory of every sight, sound and smell he experienced that day were still fresh in his mind and were brought to the fore during this second visit: "Once again do I behold these steep and lofty cliffsthe landscape with the quiet of the sky." (Lines 3-5) Wordsworth is not writing of new experiences but is recollecting thee past through the present. As Wordsworth recollects his memories of Tintern Abbey, I gaze at my photographs and recall my own. I can see the rolling hills and cliffs as I saw them that day, and through Wordsworth's words I can distinctly remember the calm of the sky and quiet aura that flooded the ancient arches of the Abbey. To be completely honest, at first I could only remember my personal feelings about

Complete Document Needs Review Form and Edit Draft Proposal Assignment

Complete Document Needs Review Form and Edit Draft Proposal - Assignment Example The committee is expected to meet at least four times in the remaining calendar year. The committee shall decide whether the newsletter will be a public relations tool or the employees’ information tool. Therefore, the committee’s worked is pegged on the approval of both the Director of Human Resources and the Chief Executive Officer of Compare Services, Inc.; additionally, before the committee decides on whether the newsletter should be a public relations device or an employee information tool, it will sought the same approval. Office space will be provided by using the space allocated to the Human Relations employee tasked with arranging and coordinating production of the newsletter. This person will get $3400 over and above their current salary. Notably, this budget is subject to recalculated if the committee decides that the newsletter should be distributed to customers as a public relations vehicle instead of just to be an employee

Letter of Complaint Essay Example | Topics and Well Written Essays - 500 words

Letter of Complaint - Essay Example Despite the urgency of the situation, I could not move the car. I have to confess that it was embarrassing, and I did not anticipate this to happen to me while driving such a well-established car brand. I was also extremely disappointed since none of the cars I have driven over the last years has given me this kind of problem. We called, in a tow truck, to help us move the car to the Auto-world Frontier service station. Our conversation with the dealership’s advisor went well enough as she accepted that the company had, indeed, neglected to carry out ground clearance and that this model was meant for German roads. I left the car there for the replacement of the oil chamber. The insurance company will cover this bill. I was informed to pick the car up after two days. As I returned to pick up the car, the advisor informed me that while the chamber’s replacement had gone off smoothly, the oil was still leaking when the engine was started. I was asked to call at two PM since the mechanics were still on the car. When I called, his phone was off. The landline number went through, only to be informed that the advisor was on a two-week leave and that I should get in touch with a Mr. Brandon. Brandon, for his part, told me that he would call me back after twenty minutes with the status on my car. When he did, he informed me that my car was badly damaged and that the engine required repair. The insurance company, apparently, would not cover the cost for repairs. No one between the insurance company and the service centre seems willing to take responsibility for my car’s damage. I would like to ascertain that the fault lies directly with VW and its ground clearance design for the model of my car. It is also worth noting that my car was not running when my misfortune occurred, and thus, the incident might not have been caused by an engine trouble before the incident. I would

Research Approaches in the social world Essay Example | Topics and Well Written Essays - 3000 words

Research Approaches in the social world - Essay Example The role of the human services professional is to make an analysis and evaluate the needs of the clients of the employers they are working. Their work is focused on the alleviation of problems of the community and so work closely with it. Human services careers which require a high level of expertise often necessitate the candidate to have a master’s degree in human services. However, people with a bachelor’s in human services have also worked their way to higher salaries from entry-level positions (Chance 2011). In this regard, I have chosen the role of a social worker working in the broader field of human services. Social work has a lot of scope. Social work professionals have regional as well as overseas opportunities for working (James 2007). For a human services graduate there are a number of options available with respect to the nature of the organization he or she can join. For instance, NGOs, government organizations, clinics, hospitals etc are potential employm ent places for human services graduate seeking to go in social work; therefore, employment can be sought both in the private and the public sector. There are employment opportunities for human services professionals in the military too. ... he military, a social worker is required to give guidance and advice to individuals who ask for it and to have a one-to-one session with the client if required. The social worker assumes a number of roles while working with the community. Looking closely at the roles and responsibilities of a social worker, I believe that I have many characteristics that make me eligible to work join social work. One of the main roles of a social worker is that of an educator, educating the clients about various issues (Chechak 2011). For this purpose, the social worker needs to have adequate knowledge of the subject and must be able to relay the information effectively to the client. In this regard, I believe that my social skills and participating in extracurricular activities during my academic life as well as my experience as a volunteer for social work have all contributed in the development of experience and professional attitudes. The client may ask any question from the social health worker a nd so I should adequately increase my knowledge about the common social issues and think up of interventions. Moreover training programs in the field of public health can also go a long way in increasing knowledge about the common health ailments of the society. If I intend to work in as a social worker with a background of human services, I would need to take training for Management of Equal Opportunity Programs etc. Another characteristic of a social worker is that he is an enabler and convinces the client to change his attitudes to suit his wellbeing. The social worker is responsible for providing support and hope to the client. The worker plays an integral role in the identification of the strengths of the client and in promoting them (Chechak 2011). In this regard, I believe that my

ASTR 123 Assignment Example | Topics and Well Written Essays - 250 words - 1

ASTR 123 - Assignment Example This theory however, fails to account for the possibility of the huge unconceivable numbers of comets that could have collided or passed near earth for this to have happened. It is believed that during the formation of the earth e.g. the big bang process and later developments, the materials that formed it contained large amounts of water that condensed and later collected, resulting in its large surface water volumes. Though this could be a possibility, the earth’s surface was less massive during the development stages leading to its gravity being too weak to hold the waters from escaping its surface at that stage. This fails to explain the almost immediate existence of water after the earth’s formation. The Snowball earth theory explains that at least once, massive glaciations occurred on earth that left almost the whole of it--if not its entire surface -- completely frozen. The theory has convincingly tried to explain the existence of similar sedimentary deposits found especially at the tropical paleolatitudes. Despite the many suppositions of the theory, it however, cannot feasibly be dependent on as it contradict known facts and theories such as the origin of glacial models and the slushball earth hypothesis. The surface of Europa is believed to be covered in thick ice crust, which prompts scientists to conclude that there is a possibility of a large salty water body rich in chemicals beneath the ice. These combined, form basic necessities required by extreme microbial life forms to thrive. Heat from tidal flexing regulates the energy changes and provides the necessary energy for microbe survival. Sulphur and sulphuric acid deposits in Europa has little resemblance with some extreme conditions on earth where microbes like pioneering bacteria evolved and mastered basic survival skills without directly getting their energy from the

Dancing at lughnasa play Essay Example | Topics and Well Written Essays - 500 words

Dancing at lughnasa play - Essay Example Andrea Corr is a character who has left me confused despite the fact that this play is part of my daily activity. I am in dispute with my conscience whether Corr is a pop or folk singer. I also wonder whether I can rate her as a good actor or not because he only tries to transmit enraptured virtuousness characters. While the characters are on the stage, there is mood swing. In one split I find myself laughing rumbustiously, the next time my eyes are full with reeking tears. I realised that at all epochs no matter what the mood happens to be at every minute the play feels amazingly true. â€Å"Marcon† is another character I believe is depicted as wireless owned by the sister. Through personification it amuses as the character seem to be almost magical and know how to control and to adjust to sisters. Marconi’s role is very interesting and indeed has the command of a character in exploring and enhancing the other characters. Contrary to many who go to the theatre exactly knowing what they are going to see and here, Last Friday I left home with my sister to go to the theatre as a play which I have heard many talk of â€Å"Dancing at Lughnasa† was to be presented. I can say I was anxious to see the characters and the real thing my sister has always talked of. When the stage was opened one of the characters called Michael came forward and introduced the play, His way of introduction was impressing as the audience cheered. It was difficult for me to find out the relationship between Michael and other characters and identifying the themes in the play. I was so much pleased with the way Andrea Corr introduced the song in the play even though I did not understand the role of a song in the play, in fact I was not aware the type of song Corr was singing. This confused me further. Marcon was the character who puzzled me as could play different roles like changing to be sisters. The characters ability to swing the moods of the audience was another part that

The importance of early formal education Essay Example for Free

The importance of early formal education Essay Abstract: Informed by, and primarily rooted in research, developmentally appropriate practice is central to optimizing children’s learning and development in early childhood educational settings CITATION Nat09 \l 1033 (NAEYC, 2009). The use of developmentally appropriate practice (DAP) involves teaching in a way that understands development in the classroom individually, and as a whole CITATION Liz13 \l 1033 (Taylor, 2013). When considering the role of the early childhood educator, the creation of adaptive and accommodating teaching methods is crucial to building a supportive and dynamic environment for learning. In building such an environment, educators may use the guiding framework of DAP to ensure that their classroom not only reinforces an advantageous atmosphere that is developmentally appropriate at every level, but also actively encourages continuous positive growth for everyone in the learning community. This position statement reaffirms the benefits of DAP in an early childhood setting by examining its guidelines, the needs and characteristics of young children, the many factors influencing a child’s learning and development, creating an environment that meets these needs, family and community involvement,  and understanding the benefits and uses of assessment. Developmentally Appropriate Practice In order to highlight its benefit as an infrastructure to early childhood education, one must first understand developmentally appropriate practice itself. Key to understanding DAP is the understanding that it is informed by our knowledge of development through theory, literature, and research, confirming that it is an evidence based practice CITATION Nat09 \p 10 \l 1033 (NAEYC, 2009, p. 10). The essence of DAP, however, relies on conscious and constant intentionality, â€Å"in the  knowledge that practitioners consider when they are making decisions, and in their always aiming for goals that are both challenging and achievable for children† (9). This wealth of knowledge required of early childhood educators includes extensive understanding of development, but is shaped by one’s knowledge of each child as an individual, their needs and abilities, and the social and cultural contexts from which they come (9,10). This careful intention and forging of relationships fosters an overall enthusiasm for learning by creating an environment for each individual child in  which they are uniquely known, understood, and respected. The National Association for the Education of Young Children’s publication of their position statement in the mid 1980’s was highly influential in the widespread recognition of DAP CITATION Sue10 \p 70 \l 1033 (Bredekamp, 2010, p. 70). DAP is defined as a practice that promotes the optimal learning and development of young children, of which is grounded in research regarding both child development as well as what is required of effective education in early childhood settings (16). In the interest of this definition, developmentally appropriate practice outlines five significant  guidelines for addressing the decisions made by early childhood educators: creating a community of learners, teaching to enhance development and learning, planning curriculum to achieve important goals, assessing children’s development and learning, and establishing reciprocal relationships with families CITATION Nat09 \l 1033 (NAEYC, 2009). Criticism, however, has emerged in response to NAEYC’s position statements over the years, questioning whether the recommended practices retain equal relevance when applied to diverse groups of students CITATION Sue10 \p 71 \l 1033 (Bredekamp, 2010, p.71). In actuality, the significance of this statement is countered in the very definition of this statement, and is even directly addressed in the most recent publication of NAEYC’s position statement on DAP. â€Å"Because the United States children’s learning opportunities often differ sharply with family income 1 / 4 and education, ethnicity, and language background, sizable achievement gaps exist [and have been identified] between demographic groups† CITATION NAE09 \l 1033 (NAEYC, 2009). For this reason, a strong need for the narrowing of these gaps has been clearly emphasized, explaining that  educators and programs must therefore â€Å"provide even more extended, enriched, and intensive learning experiences† for children who’s learning opportunities have been disadvantaged by such disparities CITATION NAE09 \l 1033 (NAEYC, 2009). Characteristics and Needs of Children In order to enable children to reach challenging and achievable goals, understanding that all domains of a child’s development are interrelated is imperative. In this, children do not divide their experiences, but contrarily their learning and development evolves as one great culmination of all experience CITATION Liz13 \l 1033 (Taylor, 2013). Not only are all areas of development and learning important; similarly, they are the result of the interaction between the sequential and varying maturation of the child and their growing experience CITATION Nat09 \l 1033 (NAEYC, 2009). The inseparable nature of all developmental domains: physical, social, emotional, and cognitive, illustrate the relative needs of each child at the different stages of their development. Every child is different, and while development may be predicted in a sequential progression, it does vary and cannot be completely limited to what we consider more exact periods of development. The generally accepted periods of development, however, refer to infancy extending from birth- 2years, early childhood as 2-5 years, and middle and late childhood as 5-11 years of age. Cephalocaudal pattern of growth characterizes physical development in infancy, where growth occurs from the head down, resulting in control of the head before the legs CITATION Joh11 \p 107 \l 1033 (Santrock, 2011, p. 107). Motor development then originates from the center of the body and moves outward, where coordination of the trunk and arms precede the hands and fingers CITATION Mot10 \l 1033 (Flinders University, 2010). Beginning as gross and graduating to fine motor development, reach and grasp are achieved in infancy. Crawling and walking also occur during infancy, typically between 5-17 months CITATION Mot10 \l 1033 (Flinders University, 2010). Motor abilities develop rapidly in early childhood in which walking leads to running and jumping, the ability to climb develops, and hand-eye coordination progresses with the growing ability to cross midline CITATION Joh11 \l 1033 (Santrock, 2011). By mid to late childhood myelination of the nervous system results in manipulation skills relative to that of an adults (153). Cognitive development can be simplified into three stages: sensorimotor, preoperational, and concrete operational. Infants in the sensorimotor stage coordinate an understanding of the world through sensory experiences, eventually leading to the beginnings of symbolic thought (174). During the preoperational stage, children’s ability to think symbolically expands as they begin to use words and images to represent their interpretation of the world (180). Their interpretation, however, is strongly influenced by egocentrism and centration (174). By mid to late childhood, the concrete operational stage emerges. From 6-7 years and on children exhibit the ability to perform concrete operations in their capacity to logically reason regarding concrete events, and use classification and seriation to organize objects (174). The maturation of self-understanding explains the complexities of social and emotional development in children. â€Å"Children are not just given a self by their parents or culture; rather, they construct themselves†(324). As they grow, their cognitive representation of the self, or self-understanding, changes (324). Self-recognition is the key indicator of self-understanding in infancy, and initially appears around three months of age (324). The ability to establish a positive recognition of oneself sets the stage for establishing relationships with others, as well as the eventual positive regulation and understanding of emotions. In conjunction with verbal communication, children are able to descriptively distinguish themselves, typically using abilities or accomplishments, active and physical descriptions, or unrealistic overestimations to define themselves (326-7). For example, a 4-year-old may describe himself or herself by saying â€Å"I know how to count† or â€Å"I have blonde hair and he has  brown hair† (325). Social comparison and self-description grow in complexity in mid to late 2 / 4 childhood, and include more realistic identifications of the self. With increased aptitude for perspective, children compare themselves with others, and use social and psychological traits to refer to themselves. For instance, a 7-year-old may say, â€Å"I am smart, and I can ride a bike as good as my sister† (326). Creating Learning Environments Providing an environment that is rich and diverse in intellectual and sensory experiences supports an effective and developmentally appropriate curriculum. The careful and informed intention of teachers is also reflected in learning environments that meet and challenge the needs of each individual child as well as the classroom as a whole. Infants and toddlers require a stimulating and dynamic sensory environment as they begin to establish themselves through the physical exploration of the world around them. As infants and toddlers begin to crawl, they need easily accessible opportunities to manipulate and observe their environment. Placing mirrors at ground level, and providing reachable and interesting toys and pictures, encourage development. The establishment of trust and autonomy is also central to infantile development; therefore, building responsive relationships between child and teacher should be emphasized as well as providing a safe and natural environment in support of the child CITATION Tri09 \l 1033 (Trister amp; Bickart, 2009). Interactively reading to infants and toddlers is vital to establishing a relationship with language and begins a visual familiarity with script CITATION Liz13 \l 1033 (Taylor, 2013). Centering on initiative, 3 to 5-year-olds need an interactive environment that offers them many  choices, and allows them to grow in their decision-making abilities CITATION Tri09 \l 1033 (Trister amp; Bickart, 2009). Language skills during these years expand enormously, as do fine and gross motor abilities; meaning, the â€Å"richer and more interesting the environment, the more opportunities there are for children to learn† (1). The learning environment should reflect the very physically and socially active nature of 3 to 5-year-olds and should allow for spacious areas for high-level group play, as well as individual playtime. It is especially important to recognize that â€Å"the physical  environment is the vehicle through which children learn† and therefore should be changed periodically to inspire new experiences (1). During the years of mid to late childhood, autonomy becomes a source of power for children as they demonstrate self-direction and pride in accomplishment (1). The creation of stations, corners, or individual learning environments within the classroom provide space for this feeling of independence. Establishing friendships is very important to 6 to 8-year-olds, meaning that the environment should also include opportunities for high-level small group play. Across the  developmental board, however, a child needs to be able to see themselves in their environment as well as in their learning experiences. Interests of all children should be catered to by the learning environment as well as challenged by it. Displaying pictures of students, their work or accomplishments, and what intrigues them promotes positive development of the self, and creates enthusiasm for learning. Assessment Dynamic, constant, and ongoing assessment is key in early childhood education, and should barely look or behave like assessment at all CITATION Liz13 \l 1033 (Taylor, 2013). The power of  observation and assessment lies in their ability to tap into some of the purest and uninhibited forms of interaction children exhibit. â€Å"Play is the expression of who a child is in every way†, and therefore should be closely and individually observed in order to better understand exactly where children are developing, their strengths, what challenges them, and their unique interests CITATION Liz13 \l 1033 (Taylor, 2013). Educators must asses major childhood growth and developmental domains, expected outcomes, and unique patterns of development in order to provide scaffolding experiences  that value each individual child as well as the learning community CITATION Liz13 \l 1033 (Taylor, 2013). Maintaining portfolios for each child in a class tracks progress, as well as paints a better picture of development and learning for that child. Portfolios should be reviewed with the child and their families, contain notes and observations regarding the child in all domains, and should hold 3 / 4 examples of accomplishments made by the child reflected over time. Influences on Learning It is nearly impossible to identify every aspect of influence on a child’s learning. Among the  multitude of ways learning is influenced, the role of the teacher is paramount, along with the impact of peers, family, and culture. Parents are extremely powerful in their influence on their child’s sentiment towards learning and being a part of a community of learners. Encouragement and support from parents communicates the importance of their development, as well as fosters desire to learn and be a part of their greater community. Parents can demonstrate a loving care for their children’s continued achievement by doing something as simple as reading to them every night. By  making this simple commitment to their child, parents promote a positive attitude towards this sort of intellectual engagement, as well as strengthen a caring relationship with their child. Not only is learning made important by this, but so too is the importance of investing quality time together reinforced. Involving Families and the Community Families, culture, and communities that children come from directly impact their value and understanding of how one behaves, demonstrates respect, and appreciates CITATION Liz13 \l 1033 (Taylor, 2013). Building reciprocal partnerships with parents and families establishes â€Å"mutual  respect, cooperation, shared responsibility† necessary in moving toward the achievement of shared goals CITATION Nat09 \p 23 \l 1033 (NAEYC, 2009, p. 23). Meeting the family where they are and where they come from, relationships are established through ongoing trust and commitment to one another. Families should be invited into the classroom community, supported, and encouraged in their involvement. Keeping families informed via newsletters, inviting them into the classroom, providing conferences, and even making home visits are all ways in which a caring community of learners is built CITATION Liz13 \l 1033 (Taylor, 2013). Conclusion The benefits of using developmentally appropriate practice in early childhood education are exemplified in its specific intention to meet and challenge the developmental needs of each individual child, as well as the entire class. By discussing the characteristics and needs of children, their progressive development across all domains, the ways in which their learning environment reflects and meets those needs, the importance and benefits of assessment, influences on learning, and the importance of family and community involvement, one can see how DAP holistically  approaches early childhood education. Works Cited BIBLIOGRAPHY Bredekamp, S. (2010). Effective Practices in Early Childhood Education: Building a Foundation . Online . Flinders University. (2010, Feb 6). Motor Development. Retrieved from ehlt. flinders. edu. au: http://ehlt. flinders. edu. au/education/DLiT/2000/Motor%20Dev/start. htm NAEYC. (2009). Developmentally Appropriate Practice in Early Childhood Programs Serving Children from Birth through Age 8. (C. Copple, amp; S. Bredekamp, Eds. ) Retrieved from National Association for the Education of Young Children: www. naeyc. org NAEYC. (2009). Key Messages of the Position Statement. (C. Copple, amp; S. Bredekamp, Eds. ) Retrieved from National Association for the Education of Young Children: www. naeyc. org Santrock, J. (2011). Child Development (13th ed. ). New York : McGraw-Hill . Taylor, L. (2013, November ). Developmentally Appropriate Practice . (E. 3. Lecture, Interviewer) Trister, D. , amp; Bickart, T. (2009). How Curriculum Frameworks Respond to Developmental Stages: Birth through Age 8. Retrieved December 2013, from ECAP Collaborative : http://ecap. crc. illinois. edu/pubs/katzsym/dodge. html POWERED BY TCPDF (WWW. TCPDF. ORG).

Approaches to Flat Slab Design

Approaches to Flat Slab Design Abstract This dissertation aims at the flexure behaviour of reinforced concrete flat slabs in the elastic range and at the ultimate load. As such, it endeavours to give readers a thorough knowledge of the fundamentals of slab behaves in flexure. Such a background is essential for a complete and proper understanding of building code requirements and design procedures for flexure behaviour of slabs. The dissertation commences with a general history background and the advantages of using flat slab as the type of floor construction. After that, an introduction of various slabs analysis method as well as the determination of the distribution of moments using elastic theory will be discussed. The building code based methods like ACI direct design method, Simplified coefficient method for BS8110 and EC2 and Equivalent frame method will be explained in details. After that follows a detailed of limit procedures for the ultimate analysis and design of flat slab using general lower bound theory for strip method and upper bound theory for yield line analysis. Besides, the fundamental of the finite element method will be discussed as well. Then, analysis will be carried out on a typical flat slab panel base on each design approach available such as yield line method, simplified coefficient method, direct design method, finite element method as well as Hillerborg strip method. The flexure resistant obtained from the analysis result will then be compared among each others and highlighting the possible pros and cons of the different analysis. Eventually, the analysis results will then be discussed in order to conclude a rational approach to flat slab design and further recommendation will be given to the future improvement of this research. 1. Introduction Concrete is the most widely used construction material in the world compare to steel as concrete is well known as the most versatile and durable construction materials. In fact, concrete is also one of the most consumed substances on Earth after water [1]. Concrete has played a major role in the shaping of our civilization since 7,000 BC, and it can be seen everywhere in our built environment, being used in hospitals, residential buildings, schools, offices, industrial buildings and others [2]. Nowadays, construction should not just be about achieving the cheapest building possible, but providing best value for the client. The best value may be about costs, but also includes speed of construction, robustness, durability, sustainability, spacious environment, etc. In fact, many type of concrete floor construction can easily fulfilled the above requirements. In the past, forming the concrete floor construction into shape was potentially the most costly and labour intensive part of the process. Nowadays, with the help of modern high efficiency modular formwork has speed up the concrete floor construction process. Alternatively, floor slab elements may be factory precast, requiring only assembly, or stitching together with in-situ elements. The result is an economic and swift process, capable of excellent quality and finishes to suit the buildings needs. 1.1 Types of concrete slab construction Concrete slab floor is one of the key structural elements of any building. Concrete floor choice and design can have a surprisingly influential role in the performance of the final structure of the building, and importantly will also influence people using the building. In general, cost alone should not dictate slab floor choice in the construction. However, many issues should be considered when choosing the optimum structural solution and slab floor type that give best value for the construction and operational stages. The optimum slab floor option should inherit benefits such as fabric energy storage, fire resistance and sound insulation between floors and others as achieving these requirements will eventually help the concrete building to lower the operation costs and maintenance requirement in long term. In general, reinforced concrete slab floors can be divided into three categories as detailed below: Flat slab Flat slab is also referred to as beamless slab or flat plate. The slab systems are a subset of two-way slab family, meaning that the system transfer the load path and deforms in two directions. It is an extremely simple structure in concept and construction, consisting of a slab of uniform thickness supported directly by the columns with no intermediate beams, as shown in Figure 1.1. The choice of flat slab as building floor system is usually a matter of the magnitude of the design loading and of the spans. The capacity of the slab is usually restricted by the strength in punching shear at the sections around the columns. Generally, column capitals and drop panels will be used within the flat slab system to avoid shear failure at the column section when larger loads and span are present, as shown in Figure 1.2. Figure 1.1: Solid flat slab Figure 1.2: Solid flat slab with drop panel Flat slab is a highly versatile element widely used in construction due to its capability of providing minimum depth, fast construction and allowing a flexible column grid system. Slabs supported on beams One-way spanning slabs are generally rectangular slabs supported by two beams at the opposite edges and the loads are transferring in one direction only. Figure 1.3 shows the type of one-way slabs. Deep beam and slab Band beam and slab Figure 1.3: Type of one-way slabs However, slab supported on beams on all sides of each panel are generally termed two-way slabs, and a typical floor is shown in Figure 1.4. Figure 1.4: Two-way slab The beams supporting the slabs can generally be wide and flat or narrow and deep beam, depending on the structures requirements. Beams supporting the slabs in one or two way spanning slabs tend to span between columns or walls and can be simply supported or continuous. In this beam-slabs system, it is quite easy to visualize the path from the load point to column as being transferred from slab to beam to column, and from this visualization then to compute realistic moments and shears for design of all members. This form of construction is commonly used for irregular grids and long spans, where flat slabs are unsuitable. It is also good for transferring columns, walls or heavy point loads to columns or walls below. This method is time consuming during the construction stage as formwork tends to be labour intensive [3]. Ribbed and Coffered slabs Ribbed slabs are made up of wide band or deep beams running between columns with equal depth narrow ribs spanning the orthogonal direction. Loads are transferring in one direction and a thin topping slab completes the system, see Figure 1.5. Ribbed with deep beam Ribbed with wide beam Figure 1.5: Types of ribbed slabs Coffered slab may be visualized as a set of crossing joists, set at small spacing relative to the span, which support a thin slab on top. The recesses in the slab usually cast using either removable or expendable forms in order to reduce the weight of the slab and allow the use of a large effective depth without associated with slab self weight. The large depth also helps to stiffer the structure. Coffered slabs are generally used in situations demanding spans larger than perhaps about 10m. Coffered slabs may be designed as either flat slabs or two-way slabs, depending on just which recesses are omitted to give larger solid areas. Figure 1.6 shows the types of waffle slabs. Coffered slab with wide beam Coffered slab without beam Figure 1.6: Type of coffered slabs Ribbed and coffered slabs construction method provides a lighter and stiffer slab, reducing the extent of foundations. They provide a very good form where slab vibration is an issue, such as electronic laboratories and hospitals. On the other hand, ribbed and coffered slabs are very consuming during the construction stage as formwork tends to be labour intensive [3]. 1.2 Flat slab design as the choice of research The choice of type of slab for a particular floor depends on many factors. Cost of construction is one of the important considerations, but this is a qualitative argument until specific cases are discussed. The design loads, serviceability requirements, required spans, and strength requirement are all important. Recently, solid flat slab is getting popular in the construction industry in Europe and UK due to the advantages as below: Faster construction Construction of flat slabs is one of the quickest methods among the other type of floors in construction. The advantages of using flat slab construction are becoming increasingly recognised. Flat slabs without drops (thickened areas of slab around the columns to resist punching shear) can be built faster because formwork is simplified and minimised, and rapid turn-around can be achieved using a combination of early striking and flying systems. The overall speed of construction will then be limited by the rate at which vertical elements can be cast [4]. Reduced services and cladding costs Flat slab construction places no restrictions on the positioning of horizontal services (eg. mechanical and electrical services which mostly running across the ceiling) and partitions and can minimise floor-to-floor heights when there is no requirement for a deep false ceiling. In other words, this helps to lower building height as well as reduced cladding costs and prefabricated services [4]. Flexibility for the occupier Flat slab construction offers considerable flexibility to the occupier who can easily alter internal layouts to accommodate changes in the use of the structure. This flexibility results from the use of a square or near-square grid and the absence of beams, downstands or drops that complicate the routing of services and location of partitions [4]. Undoubtedly, flat slab construction method is getting popular but there are still many different views about what constitutes the best way of reinforcing concrete in order to get the most economic construction. In addition, a range of methods is available for designing the flat slab and analysing them in flexure at ultimate state. Different analysis and design methods can easily result in variety of different reinforcement arrangements within a single slab, with consequent of making the different assumptions in each analysis and design method. Therefore, this research project will concentrate in examining the various analysis methods for the design of flexural reinforcement of reinforce flat slabs in terms of the code provisions, yield line analysis as well as finite element analysis method. 1.3 Research objectives Reinforced concrete slabs are among the most common structural elements, but despite the large number of slabs designed and built, the details of elastic and plastic behaviour of slabs are not always appreciated or properly taken into account especially for flat slab system. This happens at least partially because of the complexities of mathematic when dealing with elastic plate equations, especially for support conditions which realistically approximate those in multi-panel building floor slabs. Because the theoretical analysis of slabs or plates is much less widely known and practiced than is the analysis of elements such as beams, the provisions in building codes generally provide both design criteria and methods of analysis for slabs, whereas only criteria are provided for most other elements. For example, Chapter 13 of the 1995 edition of the American Concrete Institute (ACI) Building Code Requirements for Structural Concrete, one of the most widely used Codes for concrete design, is devoted largely to the determination of moments in slab structure. Once moments, shear, and torques are found, sections are proportioned to resist them using the criteria specified in other sections of the same code [5]. The purpose of this research project is to examine the analysis methods such as Hillerborgs strip, yield line analysis, equivalent frame method, finite element method and etc. particularly for the design flexural reinforcement of reinforced flat slabs, and meanwhile to gain full understanding of the theories. The different analysis methods will then be analysed and compared with the flexural capacity method calculated using general codes of ACI 318 [5], Eurocode 2 [6] and BS8110 [7]. The outcomes of the comparison will lead to highlight the pros and cons of different approaches and codes paving the way to find out a rational approach for the flat slab design in flexure. The main objectives of the proposed research are: To examine the different methods and codes use to handle the flexural capacity of the slab. To outlined the different positive and negative aspect in a specific code or method of design To gain full understanding of the flexural design theories and code requirements. To highlight the most economical design solution to overcome the flexure in a flat slab while maintaining the safety as code requirements. 1.4 Research dissertation methodology The following will be the proposed methodology of the research dissertation: Background of flat slab in construction industry Research of the evolution of flat slabs in the past decades and the major contributions made for the construction industry. Difficulties faced during the flexure design of flat slabs in the past and the possible solution for the problems will be discussed. This part of research process result in closer to the background history and the revolution of flat slab in construction. Overview of flat slab design methods Examine each design approaches used to design for flexure in flat slab such as yield line analysis, Hillerborgs strip method, the simplified coefficient method for BS8110 or Eurocode 2 and direct design method for ACI. An insight into different methods and codes will help to establish and revise the general code provisions and also gain the full understanding of theory and design of flat slab. Analysis of flat slab with different approaches Different analysis and design approaches for flexural reinforcement of RC flat slabs will be performed based on the same model slab. For instance, finite element computer software packages will be used to perform the finite element analysis. This part will eventually provide a deep understanding of various design methods as well as the ability to use finite element software in analysis and design. Research the flexural pros and cons in a flat slab among each design methods to get the rational design approach. Discussion The numerical analysis results obtain from different design methods and the codes will be discussed and compare among each others and also to the experimental results obtain in the previous research papers such as Engineering journals and other relevant engineering sources. This process will ultimately lead to a proper and systematic comparison of the codes and methods used, and highlighting their pros and cons. Conclusion This part will conclude the discussion on advantages and disadvantages of all the examined design methods trying to establish which design method may result in a more economic and rational solution. Furthermore recommendations if required and the possible future areas of research will be brought up. 1.5 Dissertation layout Chapter 2 Overview of Design This section will cover the brief of the evolution of flat slabs history. Brief introduction to the current codes for flat slab design such as American Concrete Institute ACI-318, British Standard BS8110 and Eurocode 2. In addition, the fundamental of analysis and flexure strength requirement of each code will be briefly described. Brief introduction to design methods and history of yield line analysis, Hillerborgs strip method and finite element analysis in the slab flexure design. Chapter 3, Analysis Introduction of the analysis process and assumption made for each analysis methods. Focusing on different numerical aspects of the design under different codes and approaches. This section will provide deep understanding of various design methods and how the methods deal with the flat slab flexure problem. Chapter 4, Discussion Comparison between different code equations and theories. Various numerical result from different approaches will be compared and discussed based on the experimental results from past research papers. Pros and cons of different methods for design codes (eg. ACI, EC2 and BS8110), Hillerborg strip method, yield line analysis Graphs and tables will be available to show the summary of the results from different methods. Chapter 5, Conclusion Summarise the economic and rational flexural design approach for flat slab Further recommendations 2. Overview of Design Method The aim of chapter 2 is to provide an overview of the current practice of the design of reinforced concrete flat slab systems. General code of practice of ACI 318, EC2 and BS 8110 requirements are presented, along with the brief of the ACI direct design method, EC2/BS8110 simplified coefficient method, equivalent frame method, yield line, Hillerborgs strip method as well as finite element method. Each procedure and the limitations are discussed within. The following discussion is limited to flat slab systems. That is, the design methodologies presented below relate only to slabs of constant thickness without drop panels, column capitals, or edge beams. In addition, prestressed concrete is not considered. 2.1 Approaches to the analysis and design of flat slab There are a number of possible approaches to the analysis and design of reinforced concrete flat slab systems. The various approaches available are elastic theory, plastic analysis theory, and modifications to elastic theory and plastic analysis theory as in the codes (eg. ACI Code [5]). All these methods can be used to analyse the flat slab system to determine either the stresses in the slabs and the supporting system or load-carrying capacity. Alternatively, these methods can be used to determine the distribution of moments to allow the reinforcing steel and concrete sections to be designed. 2.1.1 Elastic theory analysis Conventional elastic theory analysis applies to isotropic slabs that are sufficiently thin for shear deformations to be insignificant and sufficiently thick for in-plane forces to be unimportant. The majority floor slabs fall into the range in which conventional elastic theory is applicable. The distribution moments forces found by elastic theory is such that: Satisfied the equilibrium conditions at every point in the slab Compliance with the boundary conditions Stress is proportional to strain; also, bending moments are proportional to curvature The governing equation is a fourth-order partial differential equation in terms of the slab deflection of the slab at general point on the slab, the loading on the slab, and the flexural rigidity of the slab section. This equation is complicated to solve in many realistic cases, when considering the effects of deformations of the supporting system. However, numerous analytical techniques have been developed to obtain the solution. In particular, the use of finite difference or finite element (FE) methods enables elastic theory solutions to be obtained for slab systems with any loading or boundary conditions [8]. Nowadays, with the advancement of computer technology software, designer can easily obtained the bending and torsional moments and shear forces throughout the slab easily with any finite element software packages such as ANSYS, LUSAS, STAAD PRO, SAP2000 and others. 2.1.2 Plastic analysis The plasticity, redistribution of moments and shears away from elastic theory distribution can occur before the ultimate load is reached. This redistribution occur because for typical reinforced concrete section there is little change in moment with curvature once tension steel has reached the yield strength. Therefore, when the most highly stressed sections of slab reach the yield moment they tend to maintain a moment capacity that is close to the flexural strength with further increase in curvature, while yielding of the slab reinforcement spreads to other section of the slab with further increase in load. To determine the load carrying capacity of rigid-plastic members, two principles are used as below: Lower Bound Theorem states that if for any load a stress distribution can be found which both satisfies all equilibrium conditions and nowhere violates yield conditions, then the load cannot cause collapse. The most commonly used approach is Hillerborgs Strip method [9]. Upper Bound Theorem states that if a load is found which corresponds to any assumed collapse mechanism, then the load must be equal to or greater than the true collapse. Finding a load which may be greater than the collapse load may be considered to be an unsafe method; however, because of membrane action in the slab and the strain hardening of the reinforcement after yielding, the actual collapse load tends to be much higher. The commonly used approach of this method is yield line theory [9]. 2.2 Early History and Design Philosophies Credit for inventing the flat slab system is given to C.A.P. Turner for a system describe in the Engineering News in October 1905. However, the first practical flat slabs structure, Johnson-Bovey Building was built in 1906 in Minneapolis, Minnesota, by C.A.P. Turner. It was a completely new form of construction, and in addition there was no acceptable method of analysis available at that time. The structure was built at Turners risk and load-tested before hand in to the owner. The structure met its load test requirements hence the flat slab system was an instant commercial success and many were built in the United States later on [10]. Robert Maillart was also one of the founding fathers of flat slab from Europe, a design-and-built contractor who was perhaps better known for his work on the design of Reinforced Concrete Bridge. In 1908 Malliart carried out a series of full-scale tests on his flat slab system, see Figure 2.1. About the same time, Arthur Lord, a research fellow at the University of Illinois, also became interested in understanding how flat slabs behaved. In 1911, Lord obtained approval to instrument and test load a seven-storey flat slab building in Chicago. The view and work by them paves the way for the development of flat slabs. Their work evolved into a codified method of design and in 1930 became the London Building Act [11]. Then, Robert Malliarts dimensioning method is reviewed and compared with methods of elastic plate theory and plastic analysis. When compared the results with as elastic analysis, Malliart method considerably underestimate the bending moments acting for the flat slabs. However, the comparison made on limit analysis procedures, Malliarts design is still within the reasonable safety margins [12]. Figure 2.1: First test on flat slabs carried out in 1908 at Maillart Co. works in Zurich [11] In 1878, Grashoff have tried to use polynomial approximation deflection function to work out the flat slab design but was unsuccessful to satisfy certain boundary conditions. At that time, concrete flat slab was emerged in the use as boiler cover plates for steam engines. Due to this problem, in 1872, Lavoinne was forced to work out the flat slab using the Fourier series. Lavoinne assumed a uniformely load is loaded on an infinite large plate and the plate is under simply supported conditions. In this assumption, Lavoinne neglected the poissons effect but Grashoff did consider [12]. Maillart was aware of Grashoffs approach but he thought that it was useless for his purpose because it was restricted to uniformly distributed loads and did not account for the stiffening effect of columns. Based on simple equilibrium considerations, Nicholas managed to prove that all these systems resulted insufficient reinforcement [12]. In the year of 1921, Westergaard and Slater managed to develop a new flat slab theory by comparing the theory results to the available experimental results at that time. In the theory, the stiffening effects due to the presence of columns under different load condition were discussed. Marcus had considered this theory later on by applying finite differences approach; Marcus assumed few different boundary conditions and loads. During the past, due to the absence of a proper theory for flat slab design in Germany hence flat slab construction was almost impossible to be carried out. After sometime later, requirements for the flat slab design theory were established. This theory again mentioned that the design moment must follow Lewes theory (1920, 1922) or theory developed by Marcus (1924). [12]. 2.2.1 Robert Maillarts Contribution In 1902, Maillart has successfully developed dimensioning procedure to design a flat slab. This method was used and succeeds in building few numbers of large flat slabs structure. Due to the absence of strict construction rules in Switzerland, Maillart managed to design flat slab by considering the principle of superposition and successfully performed several arbitrary loads testing on flat slabs. Maillart derived the flexure moments at intermediate points by multiplying the flexural stiffness of the slab with the respective curvatures. The curvatures were derived using the double differentiation of the eight-order polynomial functions meanwhile the flexural stiffness of the slab was analysed using simple one way flexure test on respective slab strips [12]. Maillarts reinforcement pattern for flat slab was very close to the current design approaches. Maillarts method required to reinforce the slab in only two directions. However, C.A.P. Turner insisted to reinforce the slab in four directions (see section 2.2.2 for details). Maillart dimensioning procedure emphasised in designing for positive moments at three different locations labeled as O, Q, and C in Figure 2.2 (where O at the midspan, Q at the quarter point of transverse span l2, and C in the column axis). Negative moments were not checked in Maillart dimensioning procedure and all the bottom bars were simply bent up in the columns strips. In this method, the span ratios, size of column capital and the minimum height of the column capital were restricted to certain values, limiting the nominal shear stress at the circumference of the column to a permissible value [12]. Figure 2.2: Robert Maillarts system and notation for plan view [12] Later, Maillarts results were found underestimated with elastic analysis method. In addition, Maillarts method predicts a reduction in average moment value corresponding to span ratio while elastic plate theory remaining constant. Maillarts method underestimated elastic moments especially for a very large slab structure. In other words, Maillarts dimensioning method has significant differences with elastic analysis procedure in the flexure result of slab [12]. Since Maillarts dimensioning method ignored the negative moments hence this worries the designer when came to the safety of the slab design. In conclusion, Maillart underestimated the moments compared to the elastic analysis on the other hand similar approach to the limit analysis [12]. 2.2.2 C.A.P. Turners Concept Turner never published complete details of his design methods in order to maintain a competitive advantage in the design industry. However, some insights of Turners conceptual design of his flat slabs are available in his patent applications (C.A.P. Turner, Steel Skeleton and Concrete Construction and Elasticity, structure and strength of materials used in engineering.) [10]. In fact, Turners principle design was more concerned about shear in flat slabs as stated by him, Beside the unreliability of concrete in tension, it is unreliable in shear in its partially cured condition. This renders desirable use of reinforcement near the columns or supports to take care of shear [10]. In Turners principle, a so called Mushroom heads or cantilever caps were designed to provide shear resistance in flat slabs. As quoted by Turner, heads may be constructed in accordance with the shearing strain. The diameter of cantilever head was about one-half of the span length. Turner presumed the reinforcement cage acted as part of cantilever support to the slab [10]. Figure 2.3 is an example of the cantilever support mentioned by Turner. Figure 2.3: C.A.P. Turner, mushroom or cantilever shear head [10] Besides shear, Turner also focused on moments and used a four way reinforcement which also known as reinforcement belts, see Figure 2.4. These belts have the same width as that of the cantilever shear head. Turner believed that the positive moments were small due to the cantilever support which is stated as, Referring to flat central plate, or the suspended slab portion, there is practically no bending moment at the center [10]. Figure 2.4: C.A.P. Turners four belt floor reinforcement system [10] Also, Turner believed reinforced the slab in four directions (four belt floor reinforcement system) would provide the moment resistance to counter the negative moments at supports. With these conceptions, Turner considered a very small total design moment to proportion the flexural steel in the four belts. Turner simplified the equation as following: (1) where, W = total dead and live load in one bay L = nominal dimensions in one bay As = total flexural steel, distributed among the four belts fs = allowable steel stress d = distance to tension reinforcement Turner used the co-efficient of 1/50 for equation (1) above reference to Grashoff (1878) and to Prof. Henry T. Eddy (1899) from University of Minnesota. In fact, Turner decided to use such a small coefficient due to the consideration of shorter effective span between cantilever heads. Moreover Turner also considered the slab spanning continuously instead of simply supported design. Numerous experiments data performed by Turner proved that such a coefficient was sufficient for flexure resistant. Besides, the use of cantilever head lead to the unnecessary of drop panels in Turners concept. Turners design concept has successfully built many buildings and bridges from year 1905 to 1909 [10]. 2.3 Current Methods of Flat Slab Design 2.3.1 American Concrete Institute (ACI) American Concrete Institute (ACI) is one of the oldest codes and widely been used to design for reinforced concrete structures. The code covers a number of methods to design a flat slab system. The design of structural concrete is dictated by Building Code Requirements for Structural Concrete (ACI 318-05) and Commentary (ACI 318R-05). The ACI code contains procedure for the design of uniformly loaded reinforced concrete flat slab floors. These methods are direct design techniques and equivalent frame method. All these methods are based on analytical studies of the distribution of moments using elastic theory and strength using yield line theory, the results of tests on

Essays --

Sierra Battaglia Ms.Green English 1 February 13,2014 Down Syndrome It is believed that people with Down Syndrome has been around for a while. In 1959 Professor JÃ ©rome Lejeune proved that Down's syndrome is a chromosomal irregularity.Parents in that time were ashamed of their children with disabilities.In 1944 kids with disabilities did not have the right to have an education. Not until 1971 it was recognized that it should be legal for people with learning disabilities to get an education.Life expectancy for people with Down syndrome has heightened dramatically in modern decades from 25 in 1983 to 60 today. People with down syndrome have an increased risk for certain medical conditions such as heart disease,brain atrophy and learning disorders.(downs-syndrome association) Down's syndrome is not a disease and therefore people with Down syndrome do not suffer nor are they victims of their condition.Down Syndrome is a natural disorder coming from a chromosome defect. It is a genetic condition in which a person has 47 chromosomes instead of the usual 46. Which causes mental impairment and physical deformity.For example short stature , broad facial profile and weak muscle tone.It occurs in approximately one in every 800 live births.It is the most frequently occurring chromosomal disorder. Down syndrome is not related to race, nationality, religion or socioeconomic status.(medline plus) Children with Down syndrome are normally smaller, and their physical and mental improvements are slower compared to children who are unaffected.Some of the physical features in children have flattening of the back of the head, slanting of the eyelids, small skin folds at the inner corner of the eyes, depressed nasal bridge, slightly smaller ears, smal... ... in positive ways, particularly during adolescence. Treatments might include going to a behavioral specialist and taking medications.(Eunice kennedy shriver national institute of child health and human development) There is no specific treatment for down syndrome. A child born with a gastrointestinal blockage may need major surgery immediately after birth. Or a Certain heart defect may require surgery depending on how serious it is. Obesity can be a problem in older kids or adults so they need to keep active but before they do so they have to get their hips and neck examined. Behavioral discipline can help people with Down syndrome and their families deal with the frustration, anger, and compulsive behavior that will occur. Parents should learn to help a person with Down syndrome deal with frustration and anger. Although, it is important to encourage independence.

Organizational Behavior Terms and Concepts Essay -- essays research pa

Organizational Behavior Terms and Concepts Summary Organizational behavior is a key concept which managers need to fully understand to have a successful department and organization. Along with the having a good repose with employees; managers need to have an understanding of the environment and goals of the organization he or she works in. Since companies are now growing into a more global organization, the need for proper communication is necessary for managers in order for the organization to understand the diverse culture within the company. Managers today have to either take charge or become leaders or he or she may not advance to the next level in management. Essay   Ã‚  Ã‚  Ã‚  Ã‚  With corporate organization’s growing to a more global market; managers have to change the way they view his or her organization. There are more assets for manger’s to help aid them in continuing to allow the organization grow. Some of the tools which a manger may use is learning how to evaluate organizational behavior, organizational culture, and organizational effectiveness and efficiency. Communication has become ever more relevant with the ever growing diversity within organizations. All of these tools need to be understood and analyzed which requires for managers and organizations to observe organizational learning. This paper will discuss how these concepts and terms come into play with every organization in today’s ever changing work environment.   Ã‚  Ã‚  Ã‚  Ã‚  When a manger first takes on the role of supervising a department; he or she must first study the human behavior in the organization. This process is known as organizational behavior. Organizational behavior is defined as the study of human behavior in organizations. It is a multidisciplinary field devoted to understanding individual and group behavior, interpersonal processes, and organizational dynamics (Schermerhorn, Hunt, and Osborn, 2005, ch.1,p. 3). While knowing the background of employees will help a manger better understand the knowledge an employee has; the study of organizational behavior will allow for managers to have a more precise outlook where the department may be heading. It has been my experience that organizational behavior has been a valuable tool when assigning service technicians to customers. My company (FMC) has a large global client base and requires that the service technicians who ar... ...ent travel overseas or offshore to platforms email is the most common form of communication. We use an email read verification icon to confirm that an employee has read his or her email. When the listed above concepts are fully understood and put into place it can be used to measure the organizational effectiveness or efficiency. Organizational effectiveness allows for company’s to consider short-term and longer-term performance results. It is used to assess the goals and productivity of an organization which are using the organizational behavior tools and procedures. My company uses annual reviews of each of its employees where his or her last review’s goals and accomplishments are reviewed. The second phase of the annual review is to set goals and tasks that need to be completed during the next calendar year. A time line is then written out to give both the employee and the supervisor a realistic time in which the goals will be completed. This is one of the ways that my company uses a organizational effectiveness platform.   Ã‚  Ã‚  Ã‚  Ã‚   Reference Schermerhorn, J. R., Hunt, J. G., and Osborn, R. N. (2005). Organizational Behavior. 9th edition, New York: John Wiley and Sons, Inc.

Prevention :: Environmental Economy Chemicals Essays

Prevention Prevention entails keeping all cleaning agents, gasoline, paints, glues, thinners, and other household products in locked or inaccessible cabinets. These products should never be used in closed spaces, and areas should be extensively aired out after product use. Even with adequate room ventilation, it is probably prudent to avoid exposing children altogether (see case 4, below). Tell parents to avoid bringing children to nail salons and to keep children out of newly remodeled rooms that may be off-gassing solvents from carpet and wallpaper glues. Dry-cleaning should be aired out in the yard or an open garage for one day before being brought into the house, and car windows should be open when transporting freshly dry-cleaned clothes. w). As in the home, art supplies used at school should be nontoxic. "Acceptable Children's Art and Craft Materials," a list of 2,500 nontoxic art materials, is available from the California Department of Health Services.34 Clinicians must be alert to pare nts who might be exposing their children to solvents in the home though a number of hobbies, including silk-screening, furniture restoration, model building, and illegal drug labs (an increasing problem in certain communities).35 Finally, children should be screened during the well-child interview for any drug abuse, including the use of "legal" substances such as solvents. The best way to dispose of solvents is to use them up as intended. Otherwise, solvents should be treated as hazardous waste and disposed through a licensed hazardous waste handler.36 † The interesting thing about this advice to try to avoid any contact with chemicals in our life is that it is impossible. If a breast fed baby is not able to avoid toxins, none of us are. For a day, I made a point to read the labels of products I used and food I ate. I found that most of the ingredients I could not pronounce and had no idea why it was in the product or what it did. I also learned that most of what I use and consume contains either high fructose corn syrup or sodium laureth sulfate or sodium lauryl sulfate. I do not think that is necessarily good but I only hope it isn’t really bad. From Now with Bill Moyers, transcript: MOYERS: Of the 3000 or so high production volume chemicals in use in this country today only 43% have been even minimally tested. Only about 10 percent have been thoroughly tested to examine their potential effects on body part was getting set up on that day of development.

Power of a smile Essay

Did you know that many who have tried, but failed, to commit suicide, said that if some stranger had just acknowledged their humanity with a smile, they would have changed their mind? I am going to be talking about the power of a smile A smile does not only have the power to save lives but also has the ability to change someone’s actions if given to the right person at the right time A famous quote by Charles Chaplin is â€Å"You’ll find that life is worth while, if you just smile.† A smile is also contagious, a lot like kindness. When someone is kind to a particular person- that person then feels motivated to be kind towards others also. Smiling works in the same way. Evidence to this is a famous quote by an unknown author; â€Å"Smiling is contagious, you catch it like the flu. When someone smiled at me today, I started smiling too. I passed around the corner, and someone saw my grin. When he smiled I realised, I’d passed it onto him. I thought about that smile, the I realised it’s worth. A single smile, just like mine, could travel round the earth.† In conclusion, the most powerful aspect of a smile is that a smile itself is the most powerful human quality. It represents happiness, kindness and compassion and can give someone hope. A smile is defined as turning up the corners of your mouth to show an expression of happiness. Though really a smile has the hidden power to change lives. From saving someone’s life to simply cheering them up. We should all smile more often, after all its free and the best thing someone can wear.

John Proctor and comment Essay

The first opening scene is of some girls in the woods using magical rites to get the man of their dreams. The girls are mentioning the names of men they want and throwing what looks like herbs into a cauldron one girl gives a chicken to a black girl called Tituba who is at the side of the cauldron, and at this point she looks like the leader in these magical rites. The girls all shout at Tituba to make a spell to make the boys fall in love with them. One girl asks Abigail who she likes and another replies ‘John Proctor’ and then Abigail whispers something to Tituba who doesn’t seem to like what is being asked of her. Abigail then grabs the chicken from Tituba and throws it on the floor and then puts the blood of the chicken on her mouth. The girls are suddenly alerted to a man spying on them he even sees one of the girls naked they become hysterical and the next day we find that two of the younger girls have gone into a trance-like state probably because they were frightened of the consequences of their actions. The watcher’s daughter Betty Parriss was one of the girls in a trance. The watcher was none other than Reverend Samuel Parriss who is also the uncle of Abigail Williams. Reverend Parriss is terrified by what he has seen. He is quite hysterical as he knows that if a witch was to live within his own home the fingers of the village of Salem would point towards him and his days in the Church would be over, but even worse they could hang him. The Reverend questions Abigail in Betty’s bedroom, whilst she is in the trance like state,on what he has witnessed in the woods and he warns her that his whole life depends upon her answering ‘truthfully’. He knows he has many enemies in the village and needs Abigail to tell him the ‘truth’. This would of course be the truth that he wished to hear and it appears from his hysteria that he wants anything but the truth. At this point Abigail actually answers quite truthfully and tries to explain to her Uncle that they were only messing about by saying ‘it were sport, uncle. ‘

Guide To Air Compressors Engineering Essay

Air compressors are among the most widely used equipment in the industry. They find public-service corporation in electronic, automotive, building and fabrication industries among others. However, the broad scope of available compressor types and monetary values make their purchase an highly hard determination. To avoid blowing your clip and money on the incorrect air compressor and salvage yourself of future compressor problems, see the followers before purchasing your air compressor.Buying Considerations:Types of Air Compressors: Three chief types of air compressors are normally used in industries. Rotary Screw Air Compressors: They use duplicate prison guards to compact air and shop it in hard-hitting armored combat vehicles. Rotary compressors cost more than reciprocating compressors. They can run full-time, have a responsibility rhythm of 100 per centum and are most-suited to applications necessitating uninterrupted usage. Rotary compressors can supply 1500 CFM of air flow in a individual phase and over 2500 CFM in two or more phases. Reciprocating or Piston-driven Air Compressors: They use Pistons to compact air and shop it in high force per unit area armored combat vehicles. Reciprocating compressors are the most economical. They are designed for portion clip usage and extremely suited for intermittent applications including portable applications and place workshops. Small air compressors produce 5 HP or less while larger compressors reach 1000s of HP. Reciprocating compressors reach up to 50 CFM with a individual phase and up to 100 CFM with two or more phases. One HP normally produces 4-5 CFM of air flow. Centrifugal Air Compressors: They are turbine engines, used in power workss and high-end industrial applications, and compress air through revolving blades. They are the costliest of all air compressor types. Centrifugal compressors operate at 400-8000 HP and bring forth airflows higher than 1000 CFM.Add-On Utilities and Oil-Free Compressors:Dry, cool and clean air allows you to better the length of service of your fabrication equipment. Desiccants: They remove wet from compressed air for water-sensitive equipment. Coolers: They lower compressed air temperature. Filters: They remove drosss such as oil and dust from compressed air. Oil-free compressors: They provide oil-free or oil-less air for oil sensitive equipment such as nutrient applications and semiconducting materials and utilize compaction Chamberss sealed off from the oil-lubricated machine parts. They are much more expensive than regular rotary and reciprocating compressors. Compressor Space: Air compressors generate a batch of heat and noise. If possible, apportion a separate compressor room to incorporate the noise and blowhole the heat. Alternatively, if you do non hold adequate infinite, an enclosure can be used to cut down heat and noise from the compressor. Reciprocating compressors are louder than rotary compressors. Power Requirements: Compressors can be powered by electricity or with a gasolene or Diesel engine. Energy demands vary from 100V to 500V and supra, depending on compressor size. Mobility: Pay careful attending to grips, wheels and compressor weight when looking for a nomadic compressor. Engine-driven compressors normally come with their ain nomadic dawdlers. When short on floor infinite, opt for vertically oriented compressors to salvage infinite. Pressure and air flow: Carefully find the air force per unit area and air flow demands for every piece of your equipment and happen a compressor that can run all your equipment. Air force per unit area and flow information is normally available within equipment certification. If you can & amp ; acirc ; ˆâ„ ¢t happen this information in the certification, reach the maker for an educated conjecture. Add up the air flow values and multiply the amount by 1.5. Choose the highest air force per unit area and increase it somewhat. Make certain your chosen compressor & A ; acirc ; ˆâ„ ¢s air flow and force per unit area evaluations match these values. Future Expansion: Reciprocating air compressors have an mean life of 10-15 old ages while rotary compressors have a lifetime of 20-30 old ages. See the air flow and force per unit area demands of equipment you wish to purchase in the close hereafter before choosing the air compressor type and size. Make certain your selected air compressor can run into both your nowadays and future demands for maximal benefit. Air Compressor Pricing: Air compressors are available in a broad scope of monetary values from $ 500 for a less than 1 HP power compressor to over $ 50000 for 200HP or more compressors. 5 HP reciprocating compressors cost $ 1500-2000 and 5 HP rotary compressors cost $ 2500-4000. At 10-25 HP, compressor monetary values range from $ 4000- $ 10000 or more. 50 HP compressors cost between $ 12,000 and $ 15,000 and 100 HP compressor monetary values range from $ 20,000- $ 30,000. Oil-free compressors costs are about triple the monetary value of regular air compressors. Individual compressor parts and fix services are besides available. If upfront payment is a job, you can inquire your trader for funding, leases or monthly leases. New compressors come with at least a 1-2 twelvemonth guarantee and service contract. Used compressors are besides available in the market. Two-stage theoretical accounts, that recompress compressed air for higher compaction, are available in both rotary and recipro cating compressors and are costlier than one-stage air compressors. Energy costs: These costs make up over 70-90 per centum of the entire ownership costs of an air compressor, over a 5-10 twelvemonth period. So make sure you select efficient air compressors over inefficient low cost 1s for long tally fiscal benefits. Before buying an air compressor, inquire your trader for its Compressed Air and Gas Institute ( CAGI ) data sheet to measure its energy efficiency readings. Manufacturer and Dealer Considerations: Choose a maker committed to bring forthing air compressors as mainstream equipment. Talk to several air compressor traders and acquire information on multiple trade names, before choosing a trader. Ask about trader repute and length of service in the concern, figure of staff members available for compressor service and service rates. Get mentions from traders and inquire them about trader public presentation. You can besides inquire your industry contacts about their air compressor traders to help you in trader choice. Traders with favourable market reputes and 15-20 twelvemonth experience are good versed with compressor jobs, and can offer better and faster support and service. Make sure you pick an efficient air compressor with sufficient air flow and air force per unit area from a reputed and experienced trader to acquire maximal benefits from your air compressor. Air compressors are your long-run friends, so take your clip and avoid any hastiness in doing your purchase determination.

EBay In China Study Case Essay

Question 1 eBay first entered the Chinese market in 2002 by acquiring a 33% stake in its local counterpart, EachNet, followed by a full acquisition a year later in 2003. Critically assess eBay.s choice of market entry strategy for China (use Key Country Matrix), listing both the advantages and disadvantages of its acquisition strategy (use Drivers (YIP) -CAGE Matrix). 30% Key Country Matrix Looking at the structure of â€Å"key country matrix†, we notice that this matrix has two axes (the x-axis that shows the â€Å"competitive strength† observed in the country that we are studying; the vertical axis represents the â€Å"country atractiveness†). For China, we can say that among many others, there is a top 6 of factors that drive investment there (China is an attractive investment country): 1. Capital Availability; 2. Competitiveness; 3. Regulatory Environment; 4. Stability; 5. Local Chinese Market and Business Climate; 6. Openness to Regional and International Trade. Analyzing China’s competitive strength, we conclude that this is a country still developing. China has shortages of infrastructures and services in several markets (China’s competitive strength is not that high). Drivers (YIP) Location of activity is a crucial source of potential advantage and one of the distinguishing features of international strategy relative to other diversification strategies. Given internationalization’s complexity, international strategy should be underpinned by a careful diagnosis of the strengths and direction of trend in particular markets. George Yip’s drivers of globalization’ framework provides a basis for such diagnosis. CAGE 1. Culture distance; 2. Administrative and political distance; 3. Geographical distance; 4. Economic distance. The differences between the US and China are huge when evaluating the â€Å"culture distance†, the â€Å"administrative and political distance†, the â€Å"geographical distance† and the â€Å"economic distance†. When a company like eBay assumes intend to expand its business should be aware of these differences and adopt strategies that prevent these differences to interfere in business success. Vantages/Disadvantages of the acquisition strategy When a company like eBay assumes intend to expand its business to China should be aware of the differences between both countries and adopt strategies that prevent these differences to interfere in business success. As a disadvantage, we can consider the risk of the company not adapt in a positive way to the new market (there is the possibility of being rejected by the Chinese market). As an advantage, we can consider the possibility of this acquisition became a huge success and the sales can increase abruptly (as the Chinese market is really big, this means that eBay’s profit would be really high after this â€Å"movement†). Question 2 Assess the potential benefits and risks of eBay.s joint venture with Tom Online (use Global/Local Matrix). 20% The Global / Local Matrix assesses the volume of international trade and the volume of foreign direct investment in an industry. The industry in which it operates eBay is located in the upper right corner as shown in the figure. It is a global industry which revised the philosophy â€Å"Think Globally, Act Globally† and where there are high levels of international trade and foreign direct investment. In recent years the market for e-commerce in China has recorded tremendous growth. The joint venture on analyzing is based in the relationship between TOM Online and Skype communications company online at eBay Inc. EBay is one of the largest brands of e-commerce in the world and TOM Online is a provider of excellent services to Chinese consumers. Both companies will make financial contributions online, and the new market being built by a joint venture between eBay and TOM Online will provide a great experience for users. This joint venture will promove the connection between users and channels of distribution. Therefore, in our view this joint venture has everything to be a success. Question 3 Advantages / Disadvantages of JV international strategy On one hand, a Joint Venture strategy has several advantages, mostly when it is done on a market like Chinese one, which is very protective with its national firms and little accommodative for foreign companies. TOM online is one of the largest wireless service providers and the fifth-largest internet portal in China, which allows Ebay to penetrate the market faster and easier thanks to its existing brand-awareness among Chinese population, generating for ebay a time saver. TOM online has also a strong political asset by being supported by Li Ka-shing, the biggest holder of the company, who has also strong connexions with hugh-ranking officials both in Chian and Hong Kong. This success on the Chinese market shows that the firm has a great expertise on the specificities of this business area, and decrease the  risk for Ebay to make mistake with its strategy. Also, by making a JV, the financial risks and costs decrease because they are shared between the two firms and a synergy is created between the two sides, increasing the financial power of the firms and allowing them to launch project with shared financial participation. On the other hand, with a JV, the earnings have to be shared, so they are lower. To make this partnership happen, it demand a lot more work and energy than with the other type of partnership. That includes heavy research about the law and the compatibility between the two structures. This setting of the JV comes with a lot of impact on the management of the new entity. There is risk of disagreement on how the dividends should be shared, disagreement on the managerial model to adopt and on the global strategy. All these problemes can bring to conflict of interest and make the JV losing market shares. Question 4 : Strategic recomendation on International Commercial Strategy for E-Bay: â€Å"Alliance, Acquisition or Abandon Strategy† : Cf Excel document for QSPM Matrix.  Due to this QSPM analysis, we can see that the acquiring method is still more than the expanding method, but from close, thus we know that Ebay is the auction website, so we can council them to continue acquiring the other companies†¦

Berkely. Info in description Essay Example | Topics and Well Written Essays - 1500 words

Berkely. Info in description - Essay Example It is derived from two Greek words, phil and nous, which when translated to English means Lover of Mind. In this dialogue, Berkley, through Philonous, brings forth a strong argument against the theory of materialism and argues out his points in a way that shows how strongly he believes in immaterialism. According to Philonous, immaterialism proves and brings forth the erroneous nature of skepticism. This paper will be assessing the arguments that have been developed to oppose materialism and those that have been brought forth to support the theory of immaterialism and how it refutes skepticism. The paper will be assessing how successful the arguments that Berkley presents are in convincing the reader and the reasons for their success or failure. This dialogue is in three parts. In the first part of the dialogue, Hylas expresses his utter disdain of skepticism and points out to the opinion that he has heard Philonous to hold that there is no such thing as material substance in the wor ld; a skeptical opinion. However, according to Philonous, it is Hylas who is skeptical and he seeks to prove that to him. The two therefore begin to engage in a philosophical battle of wits. Philonous begins by questioning Hylas on heat as a secondary quality. He questions Hylas of how one can be able to experience pain or pleasure through heat if it is not perceived in the mind. Philonous gives a hypothetical situation to Hylas of putting his hand near a fire. According to Hylas, there is only one sensation that one can feel when they do this. But Philonous proves that to be contrary to reality. When the hand is put near the fire, there are two sensations that are perceived or experienced at the same time; pain, and heat. Through this argument, Philonous is able to convince Hylas that a particular sensation cannot exist in reality if it is not perceived by the mind. He also manages to convince him that heat and such sensations are not a real being. They are only existent if they ar e perceived by the mind. Philonous then proceeds to argue out about sound. Hylas believes that sound is a sensation that is created as a result of movement in the air particles. However, Philonousgoes ahead and shutters Hylas’ philosophical standing because no sensation can exist outside the mind. The mind is what enables a sensation to exist. Hylas eventually agrees that sound can have no real being without the mind, just like the sensation of heat.The next argument that Philonous presents is about colors. Hylas, in his philosophical stand believes that everything that is visible to the human eye has color that is present in it. This argument then develops to one that is based on the sense of sight. At the end of it all, Philonous gets to convince Hylas that color exists as a perception of what we see. This is because when an object is illuminated under different kinds of light, the color appearance seems to change. Therefore, the color of any object is not definite and it i s determined by one’s perception of sight. The argument on things as perceived by sight still continues beyond this point. The two argue about the size and extension. Philonous argues that everything in this world that has the privilege of sight, be it an animal, ant, or any other creature, perceives the sizes of things according to their sight. Philonous gives an example of a mite. A mite at its size is supposed to be able to see its own foot and things that are equal in size or lesser to it as bodies of some considerable dimension. However,