Friday, January 31, 2020
French Favorites For Woodwind Trio Essay Example | Topics and Well Written Essays - 500 words - 1
French Favorites For Woodwind Trio - Essay Example The concert was attended by large crowd of classical music lovers and the fans of the ââ¬ËFrench Favorites for Woodwind Trio (Keith par 1).ââ¬â¢ Upon entering the hall, I was mesmerized by its attractiveness. First, the hall is well designed such that the stage can be viewed from any place in the hall. Then, the decorations of the hall, that consisted of flashing disco lights and spelt classical music. Since I was late, I had to wedge my way through the crowd, which consisted mainly of familiar college mates, although with speckles of excited lecturers here and there. I even obtained a giggle from my music teacher who had settled at the fore spaces. I finally got a spacious position at the back place, where I could jig and dance my worry of life outside the hall off. Well, I hastily obtained a dancing partner, my classmate who also had found a position at the back. The master of ceremony was this kind of gentle men that are comedians by nature. From the point of his ushering in the concertââ¬â¢s audience, to his introduction of the performers, the audience could not help but laugh. He made the concert very lively. At the point where he pronounced the names of the ââ¬ËFrench favorite favorites for Woodwind trioââ¬â¢, they received a deafening applause from the crowd. Then, chattering followed as the faces of the audience registered excitement with anticipation. Soon the theatre was grave silent again, and the beats of ââ¬ËSuite Breve en Trioââ¬â¢ started to engulf the stage like a wave coming from very far off the horizons. Although so soft and from an old age origin (1905-1991), this music had the power of sweeping off from my feet, and for a moment, I was floating in the air with ecstasy. Oh my! The power of classical music, I did not even realize it as the guest performers entered the stage. I became conscious of them only after the beats faded and then the sound of the English horn in the
Thursday, January 23, 2020
Child Abuse: Frank and Ileana Fuster :: essays research papers fc
The term child abuse was once as rarely heard as that of pink elephants. However rare the term has once been, it is now a term used consistently throughout the news and various other publications today. Along with the progressing decline in society's morals, has come the rapid increase of crime. One such crime is child abuse. Although child abuse is common, the act is defiling. As a result of the abuse, children who fall victim to this often need psychological treatment and counseling. Often, the child is never the same as he or she once was before. The dictionary defines child abuse as: "the physical, or emotional, or sexual mistreatment of children" (Dictionary.com). Everyday thousands of children are the victims of this abuse. The abusers range from parents, friends, total strangers, to even day-care workers. One case involving the abuse of children in their care is that of Frank and Ileana Fuster. The two were accused in 1984 of molesting children in their home. Frank was a 36-year-old Cuban immigrant and was married to 17-year-old Ileana who was Honduran. Frank and Ileana Fuster were residents of Country Walk, Florida where they held a home-based babysitting service (Pendergrast). The case was then known as "Country Walk" because of the city in which the two, Frank and Ileana resided. "The case began when a 3-year-old boy asked his mother to "kiss my body" when she was giving him a bath. He said, "Ileana kisses all the babies' bodies." The mother became concerned and reported the comments to the Dade County child protection authorities ("A Summary of the Frank Fuster..." NP). Fuster seemed to be living the American dream before the accusations were presented against him. Frank and Ileana were newly weds, owned a new home in the suburbs and a landscaping business that was doing well. However, Frank was not living the American dream. He was still on probation for a 1982 child molestation conviction for fondling a nine-year-old girl and manglaughter, for shooting a man after a traffic accident ("Debunking Frontline's Did Daddy Do It?" NP). Frank had been "arrested on September 21, 1982 for lewd and lascivious assault on a minor - a nine-year-old girl whose breasts and genitals Fuster fondled while driving her home. The jury heard from the girl, who was cross-examined at length. They found her credible and convicted Fuster" ("Fuster's Manslaughter Conviction" NP). Child Abuse: Frank and Ileana Fuster :: essays research papers fc The term child abuse was once as rarely heard as that of pink elephants. However rare the term has once been, it is now a term used consistently throughout the news and various other publications today. Along with the progressing decline in society's morals, has come the rapid increase of crime. One such crime is child abuse. Although child abuse is common, the act is defiling. As a result of the abuse, children who fall victim to this often need psychological treatment and counseling. Often, the child is never the same as he or she once was before. The dictionary defines child abuse as: "the physical, or emotional, or sexual mistreatment of children" (Dictionary.com). Everyday thousands of children are the victims of this abuse. The abusers range from parents, friends, total strangers, to even day-care workers. One case involving the abuse of children in their care is that of Frank and Ileana Fuster. The two were accused in 1984 of molesting children in their home. Frank was a 36-year-old Cuban immigrant and was married to 17-year-old Ileana who was Honduran. Frank and Ileana Fuster were residents of Country Walk, Florida where they held a home-based babysitting service (Pendergrast). The case was then known as "Country Walk" because of the city in which the two, Frank and Ileana resided. "The case began when a 3-year-old boy asked his mother to "kiss my body" when she was giving him a bath. He said, "Ileana kisses all the babies' bodies." The mother became concerned and reported the comments to the Dade County child protection authorities ("A Summary of the Frank Fuster..." NP). Fuster seemed to be living the American dream before the accusations were presented against him. Frank and Ileana were newly weds, owned a new home in the suburbs and a landscaping business that was doing well. However, Frank was not living the American dream. He was still on probation for a 1982 child molestation conviction for fondling a nine-year-old girl and manglaughter, for shooting a man after a traffic accident ("Debunking Frontline's Did Daddy Do It?" NP). Frank had been "arrested on September 21, 1982 for lewd and lascivious assault on a minor - a nine-year-old girl whose breasts and genitals Fuster fondled while driving her home. The jury heard from the girl, who was cross-examined at length. They found her credible and convicted Fuster" ("Fuster's Manslaughter Conviction" NP).
Wednesday, January 15, 2020
Factors of Career Choice
career choice Contents 1. Introduction 1. 1Role 1. 2Objective and Subjective Constraints 1. 3Key Theories of Occupational Choice 1. 3. 1Developmental Theory 1. 3. 2Structural Theory 1. 3. 3RIASEC Model 2. Factors of Occupational Choice 2. 1Family and Class 2. 2Neighbourhood and Peer Group 2. 3School and Education 2. 4Race 2. 5Gender 2. 5. 1Horizontal and Vertical Segregation 2. 5. 2Pay 2. 5. 3Hours Worked 2. 5. 4Orientations to Work 3. Solution of Constraints and Obstacles to Occupational Choices 4. Conclusion 5. References 1. Introduction ââ¬Å"The occupational choice debate is concerned with the degree of choice individuals have over their eventual occupation. â⬠(Module Handbook) The process of occupational choice is ââ¬Å"psychologically based and examines the way in which the individual develops and passes through a series of stages during which the self-concept grows as abilities, aptitudes and interests develop. â⬠(Watson T. J. 2008) This assignment is attempting the factors that may prevent or affect peopleââ¬â¢s occupational choices and how we can overcome them. . 1Role Role plays an important part in human-being, it can influence a personââ¬â¢s behaviour and decision making. Role may be achieved or ascribed. ââ¬Å"The concept of an achieved and ascribed role is important in occupation choice. â⬠(Module Handbook) Stark (2007) states that ââ¬Å"An achieved role is a position that a person assumes voluntarily which reflects personal skills, abilities, and effort. An ascrib ed role is a position assigned to individuals or groups without regard for merit but because of certain traits beyond their control. (wikipedia) An achieved role can be changed and gained through putting efforts by a person, e. g. educational qualifications. On the other hands, an ascribed role is unchangeable. This role is assigned to you by your parents or family, e. g. height, gender, rich or poor, status, etc. The role of a person can influence oneââ¬â¢s occupational choice. In general, people who have advantages in their ascribed role, it perceived to have advantages in their career path or development as well. Some people can act as model, and some cannot, because of the height of a person. Fortunately, peopleââ¬â¢s achieved role can break this normal pattern. If people can put efforts and reach to higher educational level, they can also earn the opportunity on their career development and work as middle or top level management in a company. People cannot change fundamental elements but can change their path through their effort. Thus, peopleââ¬â¢s achieved and ascribed role can alter the decision when they are making decision on occupational choice. 1. 2Objective and Subjective Constraints If we wish to product a model or theory which identifies the various factors that influence the individualââ¬â¢s occupational choice, we must consider both objective and subjective constraints. The individual has certain tangible resources such as cash, skills, knowledge or physique, which are objective constraints. The individual has certain intangible minds of motives, interests and expectations, such as to achieve power or gain job satisfaction, which all are subjective constraints. These are psychological factors of personal achievement. 1. 3Key Theories of Occupational Choice . 3. 1Developmental Theory Eli Ginzberg (1951) defines ââ¬Å"an individual never reaches the ultimate decision at single moment in time but through a series of decisions over [time]. â⬠(module handbook) It is the Developmental Theory of occupational choice. ââ¬Å"E. Ginzberg looks at occupational choice as a cumulative process of decision making, taking place in three stages closely linked to tho se of emotional and intellectual development. Fantasy choice is followed by a period tentative choice, then finally there is a period of realistic choice. â⬠(White S. 968) Peopleââ¬â¢s occupational choice do not occur only at the moment on the decision making, but ââ¬Å"is an extended process which may begin as early as ten or twelve and continue well beyond the choice of a first job. â⬠(White S. 1968) Fantasy choice is occurring at the age between 6-11 when the children have no ideas about the real-life situation, all things are fantastic and delivered to them by their parents. When the children grow at the age of 11-17, the knowledge of the real world increases, they aware of themselves and the outside environment, and they makes tentative choice on the basis of their own interests. . 3. 2Structural Theory The structural theory is that the entry points of the occupational structure are impacting on ambition of people. According to Keil et al, they include family ba ckground and value, neighbourhood and peer group, school and education, gender and race. 1. 3. 3RIASEC Model Holland (1973/1985) developed a psychological approach ââ¬Å"to identify peopleââ¬â¢s occupational preferences and helps fit a personââ¬â¢s choices and organizational characteristics. â⬠(module handbook) It is referred to as RIASEC. RIASEC indicates Realistic, Investigative, Artistic, Social, Enterprising, Conventional. By the research of Taiwanââ¬â¢s high school students, we found that ââ¬Å"the R type is a very typical male-oriented type of careerâ⬠and ââ¬Å"girls, on the other hand, were more interested in the A-type fields and tended to choose artistic fields as their careers. â⬠(Tien H. L. , Wang Y. F. and Liu L. C. 2009) 2. Factors and Obstacles affecting Occupational Choice People do not enter the occupational structure with equal opportunities. There are many factors and obstacles that can influence the choice-making on occupation of people, we are now focus on the factors in structural theory, including family and class, neighbourhood and peer group, school and education, race and gender. 2. 1Family and Class When the children at the age of 6-17, which is in the stage of fantasy choice and tentative choice, they depend on their parents mostly. Thus, the patentsââ¬â¢ expectations for educational achievement, beliefs and behaviors will affect the childrenââ¬â¢s future development. The Parent Socialization Model developed by Eccles and colleague (1982) has highlighted the important role parents play in the development of childrenââ¬â¢s achievement choices. The belief of parents ââ¬Å"will then influence parenting behaviors and expectations, which, in turn, will affect child outcomes such as educational and career choices. â⬠(Jacobs, J. E. , Chhin C. S. and Bleeker M. M. 2006) Moreover, as the family background of a person on his or her ascribed role cannot be changed, family network and status also play important role on occupational choice. The structure of a family an individual faced when he or she was growing up may affect the individualââ¬â¢s social skills and lead to human capital investmentsâ⬠and ââ¬Å"parental education appears to have an indirect effect on childrenââ¬â¢s occupational status through childrenââ¬â¢s education. â⬠(Tsukahara, I. 2007) Grieco (1987) shows ââ¬Å"how this can be helpful both to the employee, wh o gains support from family members both inside and outside work and is sustained in steady employment, and for employers, whose recruitment costs are kept low and who can look to employeesââ¬â¢ relatives to help train them and teach them to ââ¬Å"fit inâ⬠. (Watson T. J. 2008) Even not every people will choose the same career as their parents, most people appear to have a high probability to make similar choices. Rather, parentsââ¬â¢ education also appears to have an indirect effect on childrenââ¬â¢s occupational choices through the childrenââ¬â¢s education. For example, if the parents perceived a positive effect on the professional occupations, the children will then also have a positive effect on the professional occupations in future. 2. 2Neighbourhood and Peer Group People can enjoy social experience through the contact of neighbourhood and peer group, such as friends and teachers. As these peer groups always recognize in peopleââ¬â¢s earlier stage, such as school life, they have long-term consequences for oneââ¬â¢s belief and value. ââ¬Å"Teachers, parents, peers, and others may influence youthsââ¬â¢ achievement and interests long before educational and occupational decisions are made. â⬠(Jacabs, J. E. 2006) These peer groups can provide people social support and encouragement; however, the groups may also provide somehow of negative impact if wrong perception and information are provided. 2. 3School and Education Formal schooling operates alongside the general cultural and family socialization process. â⬠(Watson T. J. 2008) Willis (1977) states education ââ¬Å"as a form of preparation for the way those particular individuals will need to live with their subservient roles once they enter paid employment. â⬠(Watson T. J. 2008) The jobs which people choose were influenced by the level of educational qualifications they achieved. The more professional of the jobs, the more skills and abilities are needed, and the more rewards (both monetary and non-monetary) can earn. On the contrast, there are more limitations on occupational choice for people who have lower educational level. 2. 4Race Race or Ethnic Discrimination is also undoubtedly playing a major role in occupational attainment. The research project conducted by Cardoso P. and Marques J. F. (2008) about The Perception of Career Barriers Inventory found that African and Afro Portuguese students score significantly higher than Euro-Portuguese students on Ethnic Discrimination. The Ethnic Discrimination ââ¬Å"results highlight how, at the early stages of development and at crucial career decision moments, when these beliefs are structured, a negative influence on vocational behaviour development can occur. â⬠(Cardoso P. and Marques J. F. 2008) Melamed (1995) concluded that ââ¬Å"discrimination accounted for between 55% and 62% of the variance in the differential career success of men and women in a British sample. â⬠(Brown D. 2002) Although the wide-spread prevalence of race discrimination in most countries, the limitations and difficulties in career choices and development of these minority groups are still high. . 5Gender Gender will be a major factor in the career choices. Due to the role conflicts between men and women, a study found that ââ¬Å"women in Israel, Germany, the United States, and Japan assigned lower importance to the centrality of work in their lives than did menâ⬠¦.. this is the result of womenââ¬â¢s orientation to o ther life roles, primarily because of womenââ¬â¢s concern regarding participation in the family role. â⬠(Brown D. 2002) By the survey report of ââ¬Å"Third Quarter Economic Report 2010â⬠in the section of ââ¬Å"Labour Force Participation Rates by Sexâ⬠(www. enstatd. gov. hk), the data shows the participation rates of male employees is 68. 9% and female employees is 52. 2% in the third quarter of 2010. The number of women who engaged in labour force is still lower than men. We are now analyzing the gender by three sections: horizontal and vertical segregation, pay, and hours worked. 2. 5. 1Horizontal and Vertical Segregation Horizontal segregation is the term ââ¬Å"used to describe the tendency to discover men and women in different types of occupation. (Module Handbook) For example, by the survey of ââ¬Å"annual percentage of male and female managers by job functionâ⬠, ââ¬Å"female managers are mainly in the functions of ââ¬Å"personnel & trainingâ⬠and ââ¬Å"conference & banquetingâ⬠, whilst management posts in the areas of ââ¬Å"property & securityâ⬠, ââ¬Å"food & beverageâ⬠, and ââ¬Å"control & financeâ⬠are mostly held by menâ⬠in 1999 in Hong Kong. (Ng C. W. and Pine R. 2003) By the survey report of ââ¬Å"Women and Men in Hong Kong: Key Statisticsâ⬠in the section of ââ¬Å"Employed Persons by Industry and Sexâ⬠(www. censtatd. gov. k), the female employed persons were mainly engaged in the public administration, social and personal services sector (35. 9%), while data of the male employed persons was different, with the financing, insurance, real estate, professional and business service sector being the largest sector (18. 2%) in 2009. Vertical segregation is the term ââ¬Å"used to describe the situation where, the higher one progresses in an organizational or professional hierarchy, the fewer the number of females one encounters. â⬠(Module Handbook) Morrison et al. 1987) coined a term of ââ¬Å"glass ceilingâ⬠to ââ¬Å"describe the difficulties women face in climbing to the top of the corporate ladder. â⬠(Ng C. W. and Pine R. 2003) Although the percentage of women who studied law and medical and health subjects is over 60%, the opportunities to promote is still obstruct by the ââ¬Å"glass ceilingâ⬠, such as traditional value and family responsibility. (Ming Pao Newspaper) For example, by the survey of ââ¬Å"annual percentage of male and female managers by job levelâ⬠, ââ¬Å"only 7. 2% of senior General Manager positions were held by womenâ⬠in 1999 in Hong Kong. Ng C. W. and Pine R. 2003) According to the record of Hong Kong Listing Companies, there is only 9% of women in the top management level who mostly were entered by the role of family members. (Ming Pao Newspaper) By the survey report of ââ¬Å"Women and Men in Hong Kong: Key Statisticsâ⬠in the section of ââ¬Å"Employed Persons by Occupation and Sexâ⬠(www. censtatd. gov. hk), the figures show there are 96,500 women and 229,800 men in the Managers and Administrators role, while there are 398,800 women and 149,600 men in the Clerks role. R 2. 5. 2Pay ââ¬Å"Full-time working women earn 82. % of menââ¬â¢s hourly pay. â⬠(Module Handbook) According to ââ¬Å"Women and Men in Hong Kong: Key Statisticsâ⬠in the section of ââ¬Å"Median Monthly Employment Earnings of Employed Persons by Age Group and Sexâ⬠, the median monthly earnings of female employed persons in Hong Kong was HK$8,500 in 2009 while that for males was HK$12,000. (www. censtatd. gov. hk) By the survey of , over 70% of people indicated that Hong Kong is still have sex discrimination in career environment which menââ¬â¢s paid are more than women even they are on the same positions. . 5. 3Hours Worked Even the labour market participation of women has increased dramatically in many countries, the hours worked of women are still lower than men due to the different orientations to work. Hakim (1996, 2000) states that ââ¬Å"whereas in general men prefer to work, women show a heterogeneous set of work-life orientations: some women prefer to work, others want to stay at home and almost half of them prefer to combine work and family life. â⬠(Doorewaard H, Hendrickx J and Verschuren P. 004) The data indicated that although many women are entered or re-entered into the labour market, they are still want to have work-life balance, especially for those women who are married and have children, it is also the barrier of women in the career path both actually or in peopleââ¬â¢s traditional perceptions. 2. 5. 4Orientations to Work Orientations to work to different people are varying. People seem to be motivated to work by a mixture of options, e. g. earning money, developing their careers, gaining status, etc. According to Crompton and Harris (1998), ââ¬Å"it is not only influenced by someoneââ¬â¢s own choice and motivation, but also by the constraints of the situations in which one lives and works. â⬠(Doorewaard H, Hendrickx J and Verschuren P. 2004) It can simply distinguish into three types of work orientations: job orientation, money orientation and people orientation. Watson (1994) said ââ¬Å"life circumstances and the specific circumstances prevailing in the work situation influence what they are looking for and what they expect to get. (Martin E. 2004) Hence, orientations to work are also barriers to occupational choice if the job itself cannot fit in oneââ¬â¢s orientation. 3. Solution of Constraints and Obstacles to Occupational Choices It is no doubt that the work pattern and norm is constantly changing around the world, however, this change can help to overcome some of the constraints of occupational choices. The past few decades have been marked by a significant gr owth in womenââ¬â¢s labour force participation in most countries. Although women play a stronger economic role than in the previous decades, men are usually the primary breadwinners in families. Women, who function as secondary earners, tend to have part-time and other nonstandard employment. â⬠(Kan M. Y. 2007) Those nonstandard employments, such as part-time job, temporary jobs, psychological contract, will be more common in the future work. ââ¬Å"The nature of formal contracts has altered, with more short-term contractsâ⬠¦.. sub-contracting and out-sourcing arrangements have become more common and are part of a set of strategic HRM options. (Westwood R. , Sparrow P. and Leung A. 2001) Furthermore, the increasing of feminine management style in both government and private companies where a more flexible and ââ¬Å"feminineâ⬠approach to management, such as flexible work family arrangements, ââ¬Å"Family Friendly Working Practicesâ⬠in Hong Kong. This style helps women who want to balance between work and family life. Additionally, the work pattern of ââ¬Å"10 years in employment and 10 years outâ⬠which is a flexibility approach for people who want to have a break for few years and return to work, e. . female returners who seek to re-enter the workforce after a few years of unpaid care-taking responsibilities. At the time of making occupational choice, people are still young and lack of knowledge and experience. ââ¬Å"People make choices based on imperfect knowledge and uneven distribution of knowledge and at a young age. â⬠(Module Handbook) To prevent in making wrong decision and lack of confidence from the students, school and teachers can arrange some experienced people to share their real experience and give more support to them. Luzzo (2000) proposes ââ¬Å"to help students think about the role that perceived barriers play in the career planning and exploration process, and to identify effective resources and strategies for coping with such barriers. â⬠(Cardoso P. and Marques J. F. 2008) 4. Conclusion Every people have different choices on career and different orientations to work. And, there are some subjective and objective variables affecting the process of choosing the career. People have to identify them clearly in hope to find the most suitable job for them which is fitting with their interests, intentions and abilities. owever, those obstacles can be overcome through the changing work pattern and work management. In fact, many of these trends of future work are already with us today. We are all in the moment of changing atmosphere. 5. References Brown D. (2002). ââ¬Å"The role of work and cultural values in occupational choice, satisfaction, and success: A theoretical statementâ⬠, Journal of Counseling and Development, Vol. 80, Issue 1, PP. 48-56 Cardoso P. and Marques J. F. (2008). ââ¬Å"Perception of career barriers: The importance of gender and ethnic variablesâ⬠, International Journal for Educational & Vocational Guidance, Vol. 8, No. 1, PP. 9-61 Doorewaard H. , Hendrickx J. and Verschuren P. (2004). ââ¬Å"Work orientations of female returnersâ⬠, Work, Employment and Society, BSA Publications Ltd, Vol. 18(1), PP. 7-27 Eccles J. S. (1994). ââ¬Å"Understanding Womenââ¬â¢s Educational and Occupational Choices: Applying the Eccles et al. Model of Achievement-Related Choicesâ⬠, Psychology of Women Quarterly, 18(1994), PP. 585-609 Jacobs, J. E. , Chhin C. S. and Bleeker M. M. (2006). ââ¬Å"Enduring Links: Parentââ¬â¢s expectations and their young adult childrenââ¬â¢s gender-typed occupational choicesâ⬠, Educational Research and Evaluation, Vol. 12, No. 4, PP. 395-407 Kan M. Y. (2007). Work Orientation and Wivesââ¬â¢ Employment Career s: An Evaluation of Hakimââ¬â¢s Preference Theoryâ⬠, Work and Occupations, Sage Publications, Vol. 34, No. 4, PP. 430-462 Martin E. (2004). ââ¬Å"Whoââ¬â¢s kicking whom? Employeesââ¬â¢ orientations to workâ⬠, International Journal of Contemporary Hospitality Management, Emerald Group Publishing Limited, Vol. 6, No. 3, PP. 182-188 Module Handbook ââ¬â Management, Work and Society, University of Huddersfield, January 2011 Ng C. W. and Pine R. (2003). ââ¬Å"Women and men in hotel management in Hong Kong: perceptions of gender and career development issuesâ⬠, International Journal of Hospitality Management, 22(2003), PP. 5-102 ââ¬Å"Third Quarter Economic Report 2010â⬠(2010), Census and Statistics Department, Hong Kong Government Tien H. L. , Wang Y. F. and Liu L. C. (2009). ââ¬Å"The Role of Career Barriers in high School Studentsââ¬â¢ Career Choice Behavior in Taiwanâ⬠, The Career Development Quarterly, Vol. 57, Issue 3, PP. 274-288 Tsukah ara, I. (2007). ââ¬Å"The Effect of Family Background on Occupational Choiceâ⬠, Labour: Review of Labour Economics & Industrial Relations, Vol. 21, Issue 4/5, PP. 871-890 Watson T. J. (2008). ââ¬Å"Sociology, Work and Industryâ⬠, Fifth Edition, Routledge Westwood R. , Sparrow P. nd Leung A. (2001). ââ¬Å"Challenges to the psychological contract in Hong Kongâ⬠, International Journal of Human Resources Management, 12:4, PP. 621-651 White, S. (1968). ââ¬Å"The Process of Occupational Choiceâ⬠, British Journal of Industrial Relations, Vol. 6, Issue 2, PP. 166-184 Wikipedia, the free encyclopedia, [retrieved on 18 February 2011] ââ¬Å"Women and Men in Hong Kong: Key Statisticsâ⬠(2010), Census and Statistics Department, Hong Kong Government ââ¬Å" â⬠, Ming Pao Newspaper [retrieved on 15 February 2011] ââ¬Å"70% , 3,500? â⬠, Wen Wei Po [retrieved on 15 February 2011]
Tuesday, January 7, 2020
How Do Tides and Waves Work
Waves give rhythm to the ocean. They transport energy over vast distances. Where they make landfall, waves help to sculpt a unique and dynamic mosaic of coastal habitats. They impart a watery pulse upon intertidal zones and trim back coastal sand dunes as they creep towards the sea. Where coasts are rocky, waves and tides can, over time, erode the shoreline leaving dramatic sea cliffs. Thus, understanding ocean waves is an important part of understanding the coastal habitats they influence. In general, there are three types of ocean waves: wind-driven waves, tidal waves, and tsunamis. Wind-Driven Waves Wind-driven waves are waves that form as wind passes over the surface of the open water. Energy from the wind is transferred into the topmost layers of water via friction and pressure. These forces develop a disturbance that is transported through the seawater. It should be noted that it is the wave that moves, not the water itself (for the most part). Additionally, the behavior of waves in water adheres to the same principles that govern the behavior of other waves such as sound waves in air. Tidal Waves Tidal waves are the largest oceanic waves on our planet. Tidal waves are formed by the gravitational forces of the earth, sun, and moon. The gravitational forces of the sun and (to a greater extent) the moon pull on the oceans causing the oceans to swell on either side of the earth (the side closest to the moon and the side farthest from the moon). As the earth rotates, the tides go in and out (the earth moves but the bulge of water remains in line with the moon, giving the appearance that the tides are moving when it is, in fact, the earth that is moving). Tsunamis Tsunamis are large, powerful oceanic waves caused by geological disturbances (earthquakes, landslides, volcanic eruptions) and are normally very large waves. When Waves Meet Now that weve defined some types of ocean waves, well look at how waves behave when they encounter other waves (this gets tricky so you may want to refer to the sources listed at the end of this article for more information). When ocean waves (or for that matter any waves such as sound waves) meet one another the following principles apply: Superposition: When the waves traveling through the same medium at the same time pass through one another, they do not disturb each other. At any point in space or time, the net displacement that is observed in the medium (in the case of ocean waves, the medium is seawater) is the sum of the individual wave displacements. Destructive Interference: Destructive interference occurs when two waves collide and the crest of one wave aligns with the trough of another wave. The result is that the waves cancel each other out. Constructive Interference: Constructive interference occurs when two waves collide and the crest of one wave aligns with the crest of another wave. The result is that the waves add together each other out. Where Land Meets Sea: When waves meet the shore, they are reflected which means that wave is pushed back or resisted by the shore (or any hard surface) such that the wave motion is sent back in the other direction. Additionally, when waves meet ashore, it is refracted. As the wave approaches the shore it experiences friction as it moves over the seafloor. This frictional force bends (or refracts) the wave differently depending on the characteristics of the seafloor. References Gilman S. 2007. Oceans in Motion: Waves and Tides. Coastal Carolina University.
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