Thursday, November 28, 2019

Segregation and Discrimination in My Left Foot

This is a touching movie, and most people who have watched it will agree that the levels of commitment that are exhibited by the family members towards Christy Brown despite his disabilities are relatively high. In that era, the fact that most individuals who suffered from diseases such as cerebral palsy were institutionalized was quite depressing. It meant that the individuals encountered a lot of segregation and discrimination, and they were never given an opportunity to stay with their family members or to display their talents.Advertising We will write a custom essay sample on Segregation and Discrimination in My Left Foot specifically for you for only $16.05 $11/page Learn More The case of Christy Brown is one such example that shows that a person with disabilities can do many things. This is because Christy Brown is given the chance to stay with his family, and in due course, he shows how talented he is by making use of the only part of his body th at he can control, which is his left foot. This proved that individuals with the disease could do many things like the way Christy Brown painted with his foot. It is just that they never had the chance to stay with people who love them, thus encouraging them to show case their talents. The movie encourages people who have family members who are suffering from the condition to show them love, and offer them extra care since they are not altogether retarded. In the case of Christy Brown, his family members imagined that he was retarded, yet he was not. He managed to use his foot to communicate by writing on the ground, which stunned his family. The stigma that most people have about people with cerebral palsy ought to be done away with. There is a lot to be taught about the disease. The people who suffer from cerebral palsy can be taught how and encouraged to control their bodies including speech and muscle control. The most intriguing aspect about the movie is the love that the famil y members exhibit towards Christy Brown. His mother shows exceptional love and so does the rest of the family. The movie also shows how individuals suffering from cerebral palsy have emotions such as love and hate. This is depicted when Christy falls in love with Dr. Eileen, who was his doctor. She had introduced him to a new program that had been launched for people with cerebral palsy. He shows severe levels of depression when she declares that she is going to marry someone else. Christy Brown is portrayed as a very emotional character who attempts to commit suicide, due to the heartbreak that he underwent when the woman he loved married someone else. However, the movie shows the great lengths that a family can go to in order to ensure that the family members’ interests are taken care of, and no harm comes their way. The way that Christy Brown grew up plays a significant role in molding his life. Christy Brown’s life was markedly influenced by the way that he grew up . He was considered as part of the gang. It made him confident, and he felt like a normal child although he had cerebral palsy. Christy was also able to work and earn money when his father died by writing an autobiography that managed to bring in income for the family. The movie shows that there is much more to individuals with cerebral palsy than meets the eyes.Advertising Looking for essay on art and design? Let's see if we can help you! Get your first paper with 15% OFF Learn More This essay on Segregation and Discrimination in My Left Foot was written and submitted by user Kyra T. to help you with your own studies. You are free to use it for research and reference purposes in order to write your own paper; however, you must cite it accordingly. You can donate your paper here.

Monday, November 25, 2019

Free Essays on MP3 Laddering

Table of Contents Laddering†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.2 HVM†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦....4 Attributes†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦..5 Consequences†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦...8 Values†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦..17 MECCAS†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.21 References†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦23 Laddering As a definition, laddering is an in-depth interview which takes attributes, values and consequences of a product and makes a â€Å"ladder† out of the answers that the interviewee gives. It tries to uncover consumers’ motivations underlying the importance of a products key attributes. Similar to something like this: Values Consequences Attributes The attributes are the lowest level which lead to consequences and the consequences lead to personal values, which are the highest level. It is a tailored interview that asks specific questions and gets specific answers in a certain sequence, with the goal of linking all the things mentioned above into a â€Å"ladder† as depicted in the example above. Laddering tries to probe the interviewee to think critically about the product in question for certain answers. (Reynolds, 1988) Laddering is part of the personal values area that marketers use to market consumers products. It takes consume... Free Essays on MP3 Laddering Free Essays on MP3 Laddering Table of Contents Laddering†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.2 HVM†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦....4 Attributes†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦..5 Consequences†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦...8 Values†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦..17 MECCAS†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.21 References†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦23 Laddering As a definition, laddering is an in-depth interview which takes attributes, values and consequences of a product and makes a â€Å"ladder† out of the answers that the interviewee gives. It tries to uncover consumers’ motivations underlying the importance of a products key attributes. Similar to something like this: Values Consequences Attributes The attributes are the lowest level which lead to consequences and the consequences lead to personal values, which are the highest level. It is a tailored interview that asks specific questions and gets specific answers in a certain sequence, with the goal of linking all the things mentioned above into a â€Å"ladder† as depicted in the example above. Laddering tries to probe the interviewee to think critically about the product in question for certain answers. (Reynolds, 1988) Laddering is part of the personal values area that marketers use to market consumers products. It takes consume...

Thursday, November 21, 2019

Management Styles and Insights Term Paper Example | Topics and Well Written Essays - 1000 words

Management Styles and Insights - Term Paper Example They are the drivers, the goal seekers who manage a broad spectrum of responsibilities. They are responsible in meeting a set of objectives and manage a group of people that work towards these goals. More than the glamour that is attached to the title, they are really the moving force behind every company. They make things happen. Having spoken with Ms. Elizabeth Meyer, Senior Product Manager for an international bank, we get a glimpse of how grueling this job can be. The targets can be daunting and extremely overwhelming. Managing her team alone is a challenge because she deals with five people from different backgrounds and with diverse personalities. She has to serve as the medium to enable to make the team fully functional, creating harmony and ensuring that individual differences are complimented and talents are maximized. There is also that challenge of managing the relationships with coordinating departments, who have as much quirks as her own. And of course, there is this muc h greater challenge of managing her superiors, the senior management team, ensuring that expectations are met at exceeding levels. It’s quite a tough, but rewarding job, she says. MANAGING PEOPLE Ms. Meyer says she is part democratic, part autocrat when asked what type of leader she is. It’s a challenge managing people who have different temperaments and moods, and different working styles. She has five highly experienced and greatly skilled product managers under her wing, one of which is much senior than her in terms of age. When she came in as their department head, Ms. Meyer was only 29 years old, and her age was one of the challenges she had to tweak to work to her advantage. During her previous stint in another international bank, she says she was 90% democratic, with the goal to empower each teammate to make their decisions. However, having a 35-year old team member who was not exactly thrilled to be under her management was what drove her to become more firm in her leadership style. Age seemed to have become an issue for this particular subordinate who felt like she was underrated. The attitude affected the boss-subordinate relationship such that there was too much resistance. Ms. Meyer felt that she could not afford to risk the ire of this team member as she is also deemed to be the top performer, albeit lacking in management skills to take over the Senior Management/ Department Head position. Today, she exercises her role as a manager whenever a crucial decision to be made, reminding her team that at the end of the day, she is still liable for each move the team makes. She feels that she was able to earn the trust of this subordinate by injecting the right amount of balance – she listens to this subordinate’s suggestions but also makes sure that she has a firm stance on certain issues, whenever needed. The road was not exactly smooth, so to speak, as she had her own personal challenges to address and a few unwise business decisions as well. But in the end, a good relationship founded the way to harmony in their workplace. Ms. Meyer enjoys being a leader, as she exactly knows how to motivate her team towards their goals. She is results oriented, and she makes sure that her people share her vision. They set short term and long term goals and conduct regular meetings to update each other on their own tasks. She also enjoins the participation of

Wednesday, November 20, 2019

Employee retention and development Essay Example | Topics and Well Written Essays - 3000 words

Employee retention and development - Essay Example Employee retention is more difficult than employee recruitment process in western countries. â€Å"The expense of recruiting and re-training a new worker costing anywhere from half to 200% of the departing employee’s annual salary†(Hebenstreit, Ph.D. 2008, p.4). It is estimated that U.S. companies spent $134.1 billion on employee learning and development in 2008 (Kraimer et al, 2011, p.485). Normally an organization spends a substantial amount of money for the training and development purposes of its employees. When an employee decides to quit an organization, all the money spent for the training and development of that employee by the organization will be wasted. It is the duty of the human resource department of an organization to implement strategies to reduce employee dropouts or turnover. â€Å"The UK average employee turnover rate is approximately 15% a year, although this varies drastically between industries. The highest levels of turnover are found in private sector organisations in retailing, catering, call centres, construction and media†(Workforce Management, 2011). The above employee turnover rate is huge when we compare it with employee turnover rate in other parts of the world. The reasons for higher employee turnover rate could be different like; attractive offers from other organizations, dissatisfaction over the working conditions in the present organization, ill-health, personal problems etc. In any case, it is duty of the human resource department to reduce the employee turnover rate as much as possible. â€Å"Replacing employee is not only time consuming, but expensive, costing you between  50 to 100 per cent of that positions’ annual salary† (Employee Retention and Recruitment Tips, 2009). This paper analyses the possible employ ee retention and development strategies, HRM department can implement in an organization. Theories related to Recruitment Before analysing the employee retention and development policy in detail, it is necessary to evaluate the normal recruitment policies adopting by current organization. In fact retention starts at the time of recruitment itself and therefore HRM professionals should start their efforts to retain the employees at the time of recruitment itself. Recruitment methods can be classified into two broad categories; internal and external. Internal recruitment method is normally adopted by organization when it is in need of emergency requirement of employees at some places. For example, suppose the production manager of manufacturing industry, has resigned due to some reasons. It is difficult for the organization to wait till the HRM department identifies a suitable person using external recruitment method. External recruitment process usually consists of many time consumin g stages such as posting of recruitment ads in various medias, written tests, interviews, etc. The organization may not get a production manager at least for few months if it opts for external recruitment methods. It is difficult for a production oriented organization to manage its production works for longer periods without a production manager. So, when emergency occurs, such organizations will try to promote some of its existing supervisors to the production manager post. In other words, an organization may opt for internal recruitmen

Monday, November 18, 2019

Critically evaluate the ways by which e-commerce companies use social Essay

Critically evaluate the ways by which e-commerce companies use social media to enhance their business model - Essay Example (Ambrosini and Bowman, 2009). Here we have an example of Overstock closeout comparable like ebay and Amazon in sense of sales management firm however it’s different because of its integration of social network into the social group. It encourages users to establish online presence through personalized home page with personal information and history, photographs, connects their online shopping preferences and return policies. User can become a member of social network by becoming friend with an already user and 2ndly the one who purchase or sell become the piece of business network where each connection connecting two users implies one or more earlier budgetary transactions. The most widely recognized example of a B2c application is a retail web site featuring the business items or services that might be directly purchased by the consumer. The importance of B2c varies significantly from organization to organization. For some companies that run a chain of retail stores, B2c ought to be one of the most critical pieces of their Internet strategy (Maddox and Blankenhorn, 1998). Business to Business (B2B) - Forging new relationships between businesses is becoming basic for businesses to survive and bloom in this increasingly quick paced world. Examples of B2b applications include encouraging transactions for products/services between companies, selling merchandise/services on the Internet to businesses, and production network integration. Another example is online procurement of products starting with one organization then onto the next (Maddox and Blankenhorn, 1998). Consumer to Consumer (C2C)Â  - C2C applications involve consumers directing commerce directly with other consumers. This clearly means that the organization encouraging the transaction must discover some non-customary revenge stream. This could be a little reduced of the transaction, a service fee, advertising, or some

Friday, November 15, 2019

Effect of Water to Cement Ratio on Concrete

Effect of Water to Cement Ratio on Concrete Introduction In construction projects, concrete, along with steel, wood, glass, etc, is one of the most essential materials that are needed for a successful manufacture of a structure. It one of the most common materials on a construction site and accounts for billions of pounds everywhere across the world. Due to ever-increasing machinery and technological advancements concrete can now be made of a mixture of compound materials, nevertheless the necessary components of concrete are course or fine aggregates, Portland Cement and water. In the current times, concrete structures are manufactured every day and to sustain a safe environment for people, so it is vital that that the structures that are built are sturdy, durable and do not cause any hazards to people. It is therefore a huge task for construction companies to guarantee that the structures that are built are done so to meet all the specific safety codes, British Standards or the Euro Code Standards. The properties of concrete are very vit al as they provide the necessary stability that structures are dependent on to maintain their sturdiness. As a result it is essential to research and be aware of the distinctive components of concrete and its properties, and how in this experiment these might affect the way that concrete performs when changing some variables.  (Richardson, 2002). The workability of a concrete mix gives a measure of the ease with which fresh concrete can be placed and compacted. The concrete should flow readily into the form and go around and cover the reinforcement, the mix should retain its consistency and the aggregates should not segregate. There are four factors that can affect the workability are: Consistency: The degree of consistency is depended on the nature of works and type of compaction. Water/cement Ratio or Water Control of a concrete: Water/cement ratio is the ratio of water in a mix to the weight of cement. The quality of water that required for a mix is depended on the mix proportions, types and grading of aggregate. Grading of Aggregate: The smooth and rounded aggregate will produce a more workable concrete than the sharp angular aggregate. Cement Content: The greater workability can be obtained with the higher cement content. Aims The aim of this experiment was to establish the effects of water to cement ratio on the  fresh properties of concrete (workability), and its effect on the hardened properties  of concrete (strength). Furthermore to increase the understanding in making a concrete mixture and working out the water content that needs to be added to the mixtures. And last to expand on the understanding of the importance of fresh and hard properties of concrete. Objectives The objectives of the experiment were to make three concrete mixtures by altering their water/cement ratios (0.47, 0.55 0.65) and to find out the water content to use for the three mixtures. To do a variety of tests such as the slump test, compacting factor test on fresh concrete and to carry out compressive and flexural strength tests of hardened concrete. Then finally to discuss how features such as variation in the water/cement ratio affects the workability  and strength of concrete. Theory Concrete Production, concrete is a mixture that is made up of three components, cement, water and aggregate. The water and cement are mixed together to produce a thick paste, to which then measured out aggregates are added to. The aggregates that are added are mainly composed of usual materials such as sand, gravel and crushed rocks, however due to the latest advanced technology; it has been known that other materials such as car tyres and crushed glass to be also used as aggregates. The cement is produced by blending limestone and clay, and burning it in a rotary kiln, this results in the formation of a clinker, to which gypsum is added. The mix is then ground down to fine powder cement, in which the most common is called Portland Cement. The cement/water slurry solidifies through a chemical reaction called hydration, the reaction produces immense heat so fresh concrete must by no means be handled with unprotected bare hands. During the winter season, temperatures drop below 2Âà ‚ °C, so the chemical hydration reaction may be very slow as heat is needed as a catalyst to speed up the collision of the particles. Therefore concrete pours during these seasons are not suitable as the concrete will not set. Initially this reaction is slow to start with, so this allows for the concrete to be transported and poured before it is hardened, and the theory states that complete 100% hydration takes place after 28 days. Properties of Concrete: There are four key properties that are desired in fresh concrete i.e.  good workability, compactability, mobility and stability. The most desired properties for  hardened concrete are strength and durability. The concrete should have compressive strength  (resist squeezing), tensile strength (resist stretching) and flexural strength (resist bending). All these strengths are highly dependent on the water/cement ratio and aggregate used in the  mixture, the degree of compaction and the age of the concrete. Curing concrete under water  over time allows hydration to continue hence giving it strength. The concrete used in this experiment was a C30 concrete grade and according to B.S. 5328  the compressive strength for this grade at 28 days is 30.0 N/ sq mm which can also be written  as 30 MPa which is adequate for use in beams, however this is only an estimation as there  are other factors (mentioned above) that affect concrete strength. In this experiment the slump  test and the compacting factor test were used to assess the workability and uniformity of  concrete. The deflection/ flexural strength test was carried out to evaluate the strength of the  concrete beam (mini beam sample) and find the failure load of the mini beam (100mm by  100mm by 500mm). The compressive strength was carried out to determine the maximum  failure load of the cube samples (150mm by 150mm) and the cylinder samples (150mm by  300mm) (Barnes 1992). MATERIALS AND EQUIPMENT Casting Equipment Concrete mixer Bucket (average size) Measuring Cylinder Shovel Wheel Borough Scale Figure 2: Shows Compaction Factor Apparatus. (used to determine workability of concrete  mixture) Figure 3: Slump Test Apparatus B.S. Slump cone (300mm high, tapering from a 100mm diameter top to a 200mm  diameter bottom) Slump rod (or steel tamping rod) (16 mm diameter, 600mm long, with rounded ends) Flat metal base plate (600 sq mm) (K0837225) Page 5 9. Metal Rule (300mm long) 10. Metal Scoop 11. Levelling Trowel 12. Waste rag 13. Vibrating Table 14. Moulds 6 no. Cube Moulds (150mm by 150mm) 3 no. Cylinder Moulds (150mm by 300mm) 3 no. Mini beam Moulds (100mm by 100mm by 500mm) 15. Materials Course Aggregates (Stones) Fine Aggregates (Sand) Cement Water (Tap) *Note: Aggregate used was natural aggregate used was from London. Therefore no need for  determining aggregate moisture content as aggregate is assumed to be laboratory dry to  SSD. Hence no considerable effect on water-cemet ratio. Striking Equipment 1. Pressure pipe (for striking cubes and cylinders) 2. Brushes (Soft and Hard metal brushes) 3. Oil, oil brush and rugs (for cleaning moulds before storing) 4. Crayon (for labelling concrete samples) 5. Curing room Testing Equipment 1. Compressive test machinery Figure 4: Shows the Compressive test machine used to apply loads on cubes and cylinder  samples 2. Deflection test machinery (Picture shown in figure 3. Load reader/display 4. Concrete samples 5. Digital Camera *Personal Protective Clothing was worn on all days of the experiment (Safety boots and Coats, individuals handling concrete wore protective gloves). METHODOLOGY Concrete Production: 1. Aggregates were readily weighed and placed into buckets. Quantities (constants) used in  all Concrete Mixes are shown below: Material Quantitative Weight (Kg) Cement (CEM1) 6.50 Fine Aggregate (Sand) 16.55 Natural Course Aggregate (Stones) 26.00 2. The amount of water required was determined by using the formulae shown below. Water content = (water/cement ratio) x cement weight. 3. Water was measured into a bucket using measuring cylinders. 4. The water/cement ratio was set as the variable between 3 Concrete Mixes (to determine  the effect of water/cement ratio on the strength and workability of the concrete). Water  content quantities used are shown on table 1. Table 1: Water/Cement Ratio (variable) for Concrete Mixes 1, 2 3 Concrete Mix Water/Cement Ratio Water Content (litres) 1 0.47 3 2 0.55 3.6 3 0.65 4.25 *See Appendix 1 for Actual Calculations Carried Out. 5. The concrete mixer paddles and pan were lightly dampened before aggregates were  placed in the mixer. 6. Course and fine aggregates were placed into the mixer and mixed for 30seconds. 7. Half the water required for the mix was added to the mixture and the contents were  further mixed for 1 minute. 8. The contents were covered and left for 8 minutes, to allow aggregates to absorb water,  (because aggregates are porous therefore they should soak in water into voids to get a good  mix and bonding with cementious (water/cement) paste). 9. Cement was spread evenly over the aggregates and mixed for 1 minute. 10. The remaining water was added and the contents were mixed for 2 minutes ensuring  homogeneity of the mix. 11. Workability tests were then carried out, in the order shown below. *Note; immediately after each test the used concrete was returned into the mixer and the contents were remixed for 30 seconds. FRESH CONCRETE TESTS Compacting Factor Test: 1. Trap doors of all hoppers were shut prior to beginning the test. 2. Sample of freshly mixed concrete was scooped from the mixer into the upper hopper, the  concrete sample was filled up to the brim of the upper hopper. 3. The trap-door of upper hopper was opened, to enable concrete to fall into the lower  hopper. 4. After all concrete had been collected onto lower hopper, the trap-door of the lower hopper  was then opened and the concrete allowed to fall into the cylinder. 5. Excess concrete remaining above the top level of the cylinder was then cut off using a  plane blade. 6. The concrete collected in the cylinder was then weighed. (This weight is known as the  weight of partially compacted concrete). 7. The concrete filled cylinder was vibrated to obtain full compaction, and more concrete  was added to the cylinder as required to ensure the vibrated/compacted concrete was  filled to the brim of the cylinder. 8. The now fully compacted concrete in the cylinder was weighed. 9. The compacting factor was then obtained using the formulae shown below. Compacting factor = (Weight of partially compacted concrete)/(Weight of fully  compacted concrete) Figure 5: Shows steps followed during the compacting factor test. 1) Compacting factor equipment. 2) Partially compacted weight is taken on a scale, 3) The concrete is vibrated/compacted  on a vibrating table and then the contents are toped up and vibrated to the rim container and the  partially compacted weight was taken. Slump Test: Concrete was thoroughly mixed in the concrete mixer. The slump cone was dampened to prevent concrete sticking to it. The slump cone/mould was placed on the centre of the metal plate and one individual was  asked to stand on the foot pieces on both sides of the mould. The mould was filled in 3 equal depth layers and each layer was rod 25 times using the  steel slump rod (ensuring even spread of blows covering over the whole area). Concrete was heaped over the top of the cone and with a rolling motion of the rod over  top of the mold the concrete was levelled thus removing the excess concrete. The spillage was carefully removed from the sides of the mould and the base plate   The mould/cone was carefully and slowly lifted vertically upwards. The slump cone was turned upside down and placed next to the molded concrete and the  rod was laid across the slump cone and the distance (slump) between the underside of the  rod and the highest point of the moulded concrete were read using a metal rule. There are different kinds of slump a collapsed slump, sheared slump and a true slump. The first two slump types indicate bad workability and a true slump indicates good  workability. Concrete Beam Casting Curing: Concrete was scooped out of the mixer into oiled moulds on the vibrating table (ensuring  even spread). Concrete was vibrated throughout the pour to eliminate voids and to enable compaction  of concrete by switching on the vibrating table. The vibrating motion also levelled the concrete. The concrete was left to set on the mould for 24 hours After which concrete was struck and placed in the curing room over 14 days. HARDENED CONCRETE TESTS Concrete Sample Testing: Compressive Strength Tests; were carried out on cube and cylinder samples. Flexural Strength Tests; were carried out in the mini beams. The machines where loaded with concrete sample and load applied was set to zero  before running the test. Base and top plates (spacers) were used to determine to provide platforms for the  concrete specimens and to also help provide even distribution of load. The load was applied by the machine till maximum failure load was reached. This reading was taken and the machine cleaned off concrete debris before running tests  for other samples. *Note the loading Pace Rates varied for different sample shape as shown below: Cylinders loading Pace Rate was set at 5.30 KN/s Cubes loading Pace Rate was set at 6.80 KN/s Mini Beams loading Pace Rate was set at 0.200 KN/s RESULTS 1. FRESH CONCRETE PROPERTIES TEST RESULTS Compacting Factor Test Results: Mix 1 Observations: The Concrete Mix appeared to be dry and did not pass through when the trap  door of the upper hopper was opened. The concrete mix was helped through the trap door to  the lower hopper by pushing it with a metal rod through the first trap door. The same was  done in order to get it through the second trap door into the container. This showed that it  was a bad mix with bad flowability, mobility and workability properties due to low water  content. Mix 2 Observations: The concrete mix was passed through the hopers with better ease than mix 1,  however only  ¼ of the contents went through, the rest was forced through both trap doors  with a metal rod. Therefore the flow ability and workability properties of this mix were bad,  but better than mix1, owing it to the increased water content in mix 2. Mix 3 Observations: The obtained concrete mix was a wet mix (a bit too wet) with what would  appear to be good flowability properties as all contents went through the hopers and trap  doors with one sweep and much ease. Therefore the flowability and workability properties  were the best observed for all 3 mixes, but too much water content is not good either. The compacting factor test was worked out for all the 3 Concrete Mixes and results are  shown in table 2 below. *The calculations were carried out on Microsoft Excel using the formula shown below. Compacting factor = (Weight of partially compacted concrete)/(Weight of fully  compacted concrete) BS 1881: Part 103 states that concrete is deemed unsuitable if its compacting factor is  below 0.70 or above 0.98. For normal concretes the compacting factor normally lies  between 0.80 and 0.92 (Jackson Dhir 1996). Apparent workability shown below was determined by using Compacting factor table in There was no slump as  the mix was too dry  therefore indicating  poor mobility,  flowability and  workability Collapsed slump was  obtained and the slump  exceeded the allowable  tolerance stated in BS  5328. The slump cone  was 300mm high and  the concrete mix  slumped by half that  value to 150mm. This  indicates that the mix  was too wet and this  affected its cohesive  properties. Very high *Apparent workability shown above was determined by using Slump Results Table shown  in Appendix 2 (Kew 2009). (K0837225) Page 12 Mix 1 Dry Mix/ Zero Slump Mix 2 Wet mix /13mm True Slump Mix3 Mix too wet/ collapsed slump Figure 7: Shows the Slump Results Obtained for concrete mixes with varying water  cement ratios. (Mix 1 w/c ratio 0.45, Mix 2 w/c ratio 0.55 and Mix 3 w/c ratio 0.65). 2. HARDENEDED CONCRETE PROPERTIES TEST RESULTS Figure 8: Shows the cube specimen being loaded into the compressing machine and on the right,  the classical cube hour glass failure mode on one of the cube specimen. Figure 9: Shows the cylinder specimen being loaded into the compressing machine and on the  right, the failure mode on 3 of the cylinder specimens. Figure 10: Shows a mini beam failing when subjected to Flexural Loads. This is the classical failure  mode of beams. The beam undergoes tensile and flexural strain resulting in bending and snapping of  the beam. Concrete is generally brittle and this makes it weak in tension. Hence the need for  reinforcement of concrete, steel is good in tension so it lends that quality to concrete, resulting in  better stronger structures. The results above are indicative of the effects of w/c ratio on the strength of concrete. At  0.45 w/c ratio the strength was 630.4 (Influence of test conditions. Table above show that specimen shape and size is also  influential on the compressive strength. Therefore measured strength of concrete is also  affected by height diameter ratio. This is to just show that test conditions can also affect the  determination of concrete strength. In BS 1881: Part 116 specifies that 150mm cube test are  only used for quality control purposes. Whereas BS 1881: Part 120 indicates that cylinder  test specimens are used to carry out compressive strength tests for in situ concrete and  precast members. A correction factories usually applied to the cylinder strength to obtain an  equivalent cube strength, it takes into account the specimen height /diameter ratio (i.e.  300mm/150mm = 2.). This explains the high compressive strength results obtained in  cylinder specimens than in cube specimens despite the being made off the same batch of  concrete. It should also be considered that the loading Pace Rates for c ubes (and cylinders  were varied. The trend obtained from the results shown above indicates that increasing w/c ratio increases  flexural strength. Af hydration strengthens the bonding between the cementious material and  the aggregates. However like all other factors, too much of anything is not good. If the mix  has excess water it will result in reduced flexural strength and results in bleeding of concrete  thus a weakened structure with pours in them. Again the normal distribution curve can me  expected with extremes. DISCUSSION One type of test is not enough to indicate the workability of the concrete as a whole. Use of  various tests bring out various properties that determine workability, for example, the  compacting factor can indicate how workable in the concrete will be in terms of how easily  can the concrete be vibrated and compacted. It is also a good indicator of the mobility and  flowability of concrete. It Shows how easily the concrete can be pumped from a concrete  skip into shutters, how easily the concrete will pass through the skip trap door when on  casting real structure on site. On the other hand the slump best indicates how workable the  concrete is in terms of its cohesive nature and segregation of its aggregates. It is important to  carry more than one of these tests to indicate various workability factors. These tests can also  be carried out at various stages between concrete production and casting. The common  construction site test (In situ test) is the slump tes t, it serves as the last point of quality check  prior to casting, and all other workability factors are normally carried out on the concrete  production sites. For example, the compactability factor will be most useful on production as  other mobility enhancing admixtures may be added prior to transporting concrete to site,  hence saving time, money and other complications that may arise from delaying site  programmes. From table 2 the results obtained from all mixes had compacting factors  between 0.70 and 0.98 hence indicating that all the tested concrete mixes would be  acceptable under the BS 1881. This certainly does not mean that all mixes had good  workability properties. Jackson Dhir (1996) state that some of the basic assumptions for  the test are not correct and should not be solely relied upon extensively as they can be  misleading. As concrete mixes can have same compacting factor but may not always require  the same amount of work to reach full c ompaction as compaction cannot be justified in the  true sense. From the results in table 2 it shows that changing the water/cement ratio affected  the compacting factor. Increasing the water cement ratio increased the compacting factor  therefore the workability of the concrete. All these tests have limits, for example placing  more water would have resulted in decreasing compactability factor as increasing the water  content will result in lowered compacting factors. (Compacting liquid materials do not result  in changes between partially compacted weight and fully compacted weight, hence if more  excess water is added the mix will have lower differences between partially compacted  weight and fully compacted weight. Hence giving rise to normal distribution curves for the  compressive tests. This also applies to flexural strength and durability of the concrete. CONCLUSION In conclusion it is clear that too little w/c ratio reduces the strength of concrete just as well as  too much w/c ratio will result in porous concrete. Therefore adequate amounts need to be  used to gain the best results. The best way of getting accurate assumptions on concrete is to  consider various factors. Increasing the water content ratio generally increases the strength  but may also result in shrinkage of the concrete hence altering durability and permeability  factors. Q1: Report all the results fresh properties (slump value and the shape of the slump) and  hardened properties (strength) of the concrete and comment on the results. See Results  Section for Answers. Q2: Why the need to measure the fresh and hardened properties of the concrete? Fresh properties are only of much importance in the stages of the concrete mix. These  help concrete producers spot problems early on the stage before structures are cast thus  potentially saving money, time and preventing unstable structures form being built by  spotting and correcting problems with concrete at an early stage. Also this helps prevent  the need to strike down newly built structures due to instability of concrete mixes used. Fresh properties can help indicate how much work labours will have to do on site and  consequently the energy and money that will be required when casting concrete on site. On the other hand hardened concrete properties are important in determining and the life  span of the concrete in the form of s concrete structure. The hardened properties are  important in observing and maintaining the strength of the structure and its durability. Other hardened factors are permeability and shrinkage of the concrete structures after  being built due to harsh weathers and conditions. The latter factors are of much  importance in structures like dams which require high water retaining properties.   Therefore both properties help in the development and maintenance of a good quality  structures and ensuring long life span. Whilst providing adequate safety to the habitats of  those structures. Q3: Concrete is usually tested at 28-Days for its compression strength. Why at 28-Days? The specimens should be cured under water and for normal concrete they should have  reached maximum strength at 28 Days. Concrete hardening process (Hydration) is  thought to reach its final strength in 28 Days as the reaction slows to a halt and adding  more water or curing concrete past that stage will sure minute or no further significant  changes in concrete strength. Q4: As for reinforced concrete beam, describe the need to place reinforced steel in  concrete beam, the purpose of cover/spacing, the diameter of the steel used and why  concrete beams need to be reinforced? Concrete is good in compression meaning it has high resilience to compressive forces but  is very weak in tension. As noted in the results the beams failed at much lower loads than  both cubes and cylinders, although there are other factors that play a role here that is the  general observation. Hence concrete reinforcement is required, it has good tensile  resilience and when concrete and steel are combined they result in components strong in  both tensile and compressive properties. The purpose of concrete cover is to protect steel  from corrosion, due to air reacting with steel and prevent rust formation due to water. Corrosion and rust results in weakened concrete structure as may result in loss of  resilience to tensile forces. So the concrete cove4r provides protection and a neutral  environment for steel. Concrete cover usually ranges around 500mm from the steel bars. Excess cover is not good as it makes the structure more susceptible to chipping and hence  weakens the cover itself and increases chances of steel corrosion taking place. The  diameter of steel used can vary according to the purpose of the structure but over  reinforcement can also bring about imbalances to the structural stability and may result in  a weakened structure. The normal diameter used ranges between 10-30mm, this makes it  easier to bend and alter on site as well as provide ease of manual handling for steel fixers.

Wednesday, November 13, 2019

Belgian Colonializm in the Congo Free State Essay -- essays research p

The violent and forced rule of the Congo is a horrific time in African history. The time period beginning with Henry Morton Stanley's first exploration to the Congo, and King Leopold's desire of this area, had been a nightmare for the people of the Congo. The civilizing mission to the Congo not only resulted in the killing of thousands of people but also the destruction of a culture. The two articles, 'Belgian Colonialism in the Congo', and the letter by George Washington Williams, are just two views from this time. Both articles depict very different opinions of what is going on in the Congo and also what should be allowed to go on there. These articles show the very different opinions of someone who has never gone and someone who has witnessed the things that happen. The importance of the King Leopold article is that it gives a clear understanding of his mindset at the time. He wanted this land and its people, in the article he rationalizes the way it is being taken and what is ha ppening there. In Williams? article he reflects on his disappointment of Africa and the horrific things that he witnessed in the Congo. This essay will discuss the reliability of these two sources and whether or not they give an accurate depiction of the Congo and its colonization. It will also compare and contrast the articles, their authors, and will come to a conclusion of which article is more accurate. King Leopold was the king of Belgium. It is legendary that he had no joy in his life and that he realized that the only thing that would make him happy was to gain more power. (Class notes) In his quest for power and more land he decided that he wanted the heart of Africa. Of course he did not intend to go there himself so he enlisted Henry Morton... ... is positive about the efforts in the Congo and is confident that their presence there will civilize the people. Williams? letter is appalled by the things going on in the Congo and wants a direct action taken to stop these atrocities. Although King Leopold?s article is from the ?king? that does not mean it is the most accurate or reliable source. Williams? article is a better depiction of the truth because he was actually there. Leopold never traveled to the Congo or anywhere near it in Africa. He simply enlisted other men to do his dirty work. Each article describes the Congo Free State differently as well. Leopold?s article describes a place that needs to be civilized, a ?barbarous community?. It talks about how the people there are violent and that sometimes force is needed. Williams? article is a direct contradiction. He describes a place of fear and turmoil.