H.S. Level - SOund And Light Waves :: essays research papers

Sounds are produced by the vibrations of material objects, and travel as a result of momentum transfer when air molecules collide. Our ‘subjective impression’ about the frequency of a sound is called pitch. High pitch has high vibration frequency, while low pitch has a low vibration frequency. A pure musical tone consists of a single pitch or frequency. However, most musical tones are â€Å"complex summations† of various pure frequencies - one characteristic frequency, called the fundamental, and a series of overtones or harmonics Younger people can usually hear pitches with frequencies from about 20 hertz (infrasonic) to 20,000 (ultrasonic) hertz. We can’t hear above 20,000 hertz or below 20 hertz (ultra and infrasonic waves). Light is both part particle and part wave. Light is â€Å"the electromagnetic radiation that may be perceived by the human eye†. It consists of photons, which are massless bundles of concentrated electromagnetic energy. Light’s lower frequency is red, and the higher frequency is blue. Like sound, light has frequencies humans can’t detect. Ultraviolet light is at a frequency higher than violet, and infrared is at the frequency lower than the red of visible light. We get UV (ultraviolet) rays from the sun, and infrared is used in night vision to see better. Sound travels at about 1,200 k/hr while light travels at about 300,000 km/s. It’s easy to notice how slowly sound travels. Take, for instance, a soccer field. If you were standing at one end and you see somebody kick the ball, it will probably take a second for you to hear the person kick it. You hear the sound a few seconds after you see the ball moving. The farther you are away, the longer the space is between you seeing the ball being kicked and you actually hearing it. Light can travel around the earth 7 and a half times in one second. Light and sound are similar in some ways too, though. They both have frequencies that humans cannot detect (ultraviolet, infrasonic, etc.). Since both of them are also waves, they can be made to interfere. They can also be made to reflect and refract. As said above, both light and sound waves have to do with interference. In sound, interference affects both the loudness and amplitude. When two waves’ crests overlap, the amplitude increases. The same is true with the troughs of the waves, which decrease the amplitude.

The Pearl For Some1 Young Cause I Cant Write :: Free Essay Writer

The Pearl   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  The book I have read was by John Steinbeck. It’s about a poor native Kino, Juana, and the baby boy Coyotito. The setting is in the 1900’s at a coastal village. Kino is a fisherman and a diver. The story starts out with there baby boy Coyotitois stung by a scorpion, and the Doctor in the town will not work on the baby because they have no money to pay him. So Kino is mad and goes out to try to find some pearl to pay for the doctor to work on Coyotito. When hew is diving he find a giant Shell and when he opens it up he find a pearl the size of a seagull. Everyone in the village stops by to see it and to tell him how lucky he is and what they would do if they found it . he tell s them he is going to get married and have his boy get a good education so he tell him it the rich man a cheating them or not, and he want a rifle. The priest and ask them if they are going to give money to the church and they told him they wanted to be wed. Later that night the doctor comes and tell them the baby still has poison in him and he maybe able to fix him. He gives the coyotito something that makes him sick and comes back and say he has beaten the poison. the doctor ask how he will be paid and Kino tell him about the pearl .Kino glanced at where he buried it. When he went to bed someone came into his hut and start looking for it but Kino jumps up and try to stab them with his knife. The next day he takes the pearl in to try to sell it to the pearl buyers. But, they try to cheat him by trying to buy it for 1000 pesos but he tell them he will take it to the capital and sell it there for the real price. He goes back home and hides it. he keeps thinking there is someone in the shadows. he falls a sleep and he wakes up and someone is in his hut again he jumps up and try to stop them but gets put on the ground again. Juana gets up and doctors his wounds he has a cut on his neck and she try to get him to crush the pearl she thinks it’s evil but he will not listen to he. later on he wakes back up and Juana is The Pearl For Some1 Young Cause I Cant Write :: Free Essay Writer The Pearl   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  The book I have read was by John Steinbeck. It’s about a poor native Kino, Juana, and the baby boy Coyotito. The setting is in the 1900’s at a coastal village. Kino is a fisherman and a diver. The story starts out with there baby boy Coyotitois stung by a scorpion, and the Doctor in the town will not work on the baby because they have no money to pay him. So Kino is mad and goes out to try to find some pearl to pay for the doctor to work on Coyotito. When hew is diving he find a giant Shell and when he opens it up he find a pearl the size of a seagull. Everyone in the village stops by to see it and to tell him how lucky he is and what they would do if they found it . he tell s them he is going to get married and have his boy get a good education so he tell him it the rich man a cheating them or not, and he want a rifle. The priest and ask them if they are going to give money to the church and they told him they wanted to be wed. Later that night the doctor comes and tell them the baby still has poison in him and he maybe able to fix him. He gives the coyotito something that makes him sick and comes back and say he has beaten the poison. the doctor ask how he will be paid and Kino tell him about the pearl .Kino glanced at where he buried it. When he went to bed someone came into his hut and start looking for it but Kino jumps up and try to stab them with his knife. The next day he takes the pearl in to try to sell it to the pearl buyers. But, they try to cheat him by trying to buy it for 1000 pesos but he tell them he will take it to the capital and sell it there for the real price. He goes back home and hides it. he keeps thinking there is someone in the shadows. he falls a sleep and he wakes up and someone is in his hut again he jumps up and try to stop them but gets put on the ground again. Juana gets up and doctors his wounds he has a cut on his neck and she try to get him to crush the pearl she thinks it’s evil but he will not listen to he. later on he wakes back up and Juana is

Capitalism vs. Communism :: Compare Conrast Comparison

Capitalism vs. Communism For many years the United States as looked upon communism as an evil and must not spread to other countries. The Cold War is a perfect example of this; we spent 40 years in terror due to this way of thinking. Now we understand that communism is not an evil just another way of organizing a country. Capitalism and Communism has its own ideas on how a government should run, whether it’s through advancement of people According to Minsky capitalism is not just the market economy, but it is also a financial economy (1). Minsky states that there are two sets of prices, first is the prices of current output, and second consist of the prices of assets (1). Capitalism is an economic system characterized by freedom of the market (essay.com 1). Capitalism is different from many other economic ideas by the fact that capitalism gives individuals freedoms with minimal government interference. In a market capitalist system, capital and land are private property (Haramis 1). From this enterprises can be formed by individuals by attaining land and equipment. An enterprise organizes and directs production. The United States is known as a post-industrials economy, this means that the United States is a service economy. There has been several different types’ capitalism that has influenced the world. First was Adam Smith’s idea about capitalism, which is proprietary capitalism. During this era of capitalism there were few corporations and probably none as we know them in our times (Haramis 1). The second form of capitalism is the progressive capitalist economy. In this form of capitalism, investment outputs are part of the current output (Minsky 2). Although capitalism has been through several changes throughout the years the capitalistic economy system has been the most influential economical as well as political system. Like capitalism communism also has many benefits for its people. First everyone has a job and is treated the same. Communism can be defined as an economic and political system in which facts of production are collectively owned and directed by the state (essay.com 1).

Foreign Language Instruction Should Begin In Kindergarten Essay

For years it was thought that learning foreign language is getting more and more important because of the globalization. In order to acquire a new language as soon as possible, amounts of parents would like to let their children begin to learn new languages in kindergarten. There are many positive effects if people learn foreign language when they are young children. Even though adults have advantages in learning new languages as well, children learning language easier than adults is still a common thing. This essay examines firstly that obtaining a new language benefits children increase their critical thinking skills and children are good at imitating native pronunciation then considers the advantage about adults learning additional language followed by the drawback of children learning new language in kindergarten. First of all, learning foreign language in kindergarten benefits young children to enhance their brains. Catherine Ford mentioned that the brain can been seen as muscle, the more exercises it does the better it functions, (2014). Every part can be trained even human brains. Take athletes as an example, every athletes need to do the exercises to build up their muscles, seems like the more exercises they do the stronger they are. However, they begin their sport area probably when they are teenagers. One thing should be known that human brains is the first part begin to strengthen, so it is a strategic decision to begin foreign language instruction in kindergarten. Moreover, young children do not need to learn difficult words in kindergarten, which makes these children are more interested in new language without any pressure. Basically children are always interested in fresh things, so they would like use what they have just learnt, which helps them to memorize new language words. It is clear to see that children could obtain a new language when they play soma games in kindergarten with their  peers. Some pupils are rebellious when they grow up, so it is a good chance to teach them language when they are in preschool. In addition, young children are really good at imitating native pronunciation, which is also an extremely crucial reason. ‘Children who learn a language before the onset of adolescence are much more likely to have native-like pronunciation’ (Baker, F n.d.). Compare to the adults who learn foreign language, it is well known that adults have experienced how to learn a language, but they always use the origin language pronunciation to learn foreign language. There are different grammars in different languages as well, so using the same way to learn new language wastes time sometimes. Another thing is that adults cannot only learn some simple words, because when they have a conversation with someone else they need to know many vocabularies of different aspects. All of these words’ pronunciations need to be memorized, which is a tough question for adults. Although children have to learn more words then adults when they grow up, they can still deal with it because they have already learnt the foundation of the language and made steady progress step by step. Perhaps it can be seen that children learn new language more easily than adolescence. On the other side, it should be doubted that the ability of adults to obtain a new language is weaker than the one of children. Basing on the word from Mo Costandi ‘The brain’s neuroplasticity decreases with age, but this shouldn’t put off older learners.’ (2014). Although the brain of an adult is different than the brain of a child, which is totally developed and might become more mature and more ineradicable toward aged issues even more resistant to a new thing. Human are never too old to learn, the ability of brain is immeasurable, scientists believes that the brain is a highly dynamic structure, which changes itself in response to new experiences, and adapts to injuries. (2014) Comparing to children, with large lives experience, adults can learn a new word by searching a relevant memory, that is the reason why learning a new language’s vocabulary is much easier for adults than learning the grammar and syntax. While without enough experience, children are difficult to understand a new word. Moreover, learning a new language is good for the health of the brain, some research suggested that pick up a second language can decreased the change to get a senile dementia for older learner. Secondly, children learn foreign language could forget their first language. It means if young children learn second language and practice with their partners for a long time, the mother language could be forgotten. ‘Research has shown that it is important to develop a child’s first language literacy before introducing a second language’ (APEC 2006). In this aspect, adults do it better than preadolescence, because they have used their mother languages for several decades. This research shows that human can have a deep memory with the languages what have been used for many years. By the way, if foreign languages are provided in kindergarten or preschool, most of children probably are going to lose their own mother languages. Sometimes languages could be seen as cultures. Part of parents would like to see their children studying foreign language in kindergarten only because they want to make their children have more advantages than children’s competitors in the future. However, these children’s foreign languages could not better than native speaker’s, and they lose their countries’ cultures. All of these illustrate children begin to learn foreign language in kindergarten is not suitable. It has been seen that, learning foreign language in kindergarten brings children not only the increase of critical thinking, but also the development of imitating skills. However, younger children could get more pressure when study extra language course and adults have experienced how to learn a language. Statistics show that there is still an increase in children learning a new language. More research needs to be carried out on implications of this trend for children learning foreign language with making their minds more creativity and flexibility. Reference list APEC 2006, Language learning and age, APEC, viewed 24 February 2015, http://hrd.apec.org/index.php/Language_Learning_and_Age Baker, F n.d., Children learning a second language, Kidspot, viewed 05 March 2015, http://www.kidspot.com.au/schoolzone/General-Children-learning-a-second-language+4095+396+article.htm Clarke, P 2009, Supporting children learning English as a second language in the early years (birth to sic years), VCAA, viewed 05 March 2015, http://www.vcaa.vic.edu.au/documents/earlyyears/supporting_children_learning_esl.pdf Costandi, M 2014, ‘Am I too old to learn a new language?’, The Guardian, 13 September, viewed 26 February 2015, http://www.theguardian.com/education/2014/sep/13/am-i-too-old-to-learn-a-language Ford, C 2014, †Children should start learning languages at age three†, The Telegraph, 10 October, viewed 05 March 2015, http://www.telegraph.co.uk/education/educationopinion/11151726/Children-should-start-learning-languages-at-age-three.html Henry, J 2012, ‘Foreign language to be compulsory from age seven’, The Telegragh, 09 June, viewed 26 February 2015, http://www.telegraph.co.uk/education/primaryeducation/9321651/Foreign-languages-to-be-compulsory-from-age-seven.html Mclaughlin, B 1992, Myths and misconceptions about second language learning: what every teacher needs to unlearn, University of California, viewed on 26 February 2015, https://www.usc.edu/dept/education/CMMR/FullText/McLaughlinMyths.pdf Merritt, A 2013, ‘Are children really better at foreign language learning?’, The Telegraph, 18 September, viewed 05 March 2015, http://www.telegraph.co.uk/education/educationopinion/10315238/Are-children-really-better-at-foreign-language-learning.html Schartwen, E 2008, ‘Aussie kids ‘need a second language’’, Sydney Morning Herald, 23 May, viewed 26 February 2015, http://www.smh.com.au/national/aussie-kids-need-a-second-language-20080522-2hey.html Schouten, A 2009, The critical period hypothesis: support, challenge, and reconceptualization, Kanda University of International Studies, viewed 04

MySQL server Essay

When a client connects to the MySQL server, the server uses the username provided by the client and the client host to select the appropriate account row from the mysql.user table. It then uses this row to authenticate the client. Before MySQL 5.5.7, the server authenticates the password provided by the client against the Password column of the account row. As of MySQL 5.5.7, the server authenticates clients using plugins. Selection of the proper account row from the mysql.user table is based on the user name and client host, as before, but the server authenticates the client credentials as follows: The server determines from the account row which authentication plugin applies for the client. If the account row specifies no plugin name, the server uses native authentication; that is, authentication against the password stored in the Password column of the account row. This is the same authentication method provided by MySQL servers older than 5.5.7, before pluggable authentication was implemented, but now is implemented using two plugins that are built in and cannot be disabled. If the account row specifies a plugin, the server invokes it to authenticate the user. If the server cannot find the plugin, an error occurs. The plugin returns a status to the server indicating whether the user is permitted to connect. Whereas SQL Server supports two authentication systems, Microsoft Access supports three. Unfortunately, three is not necessarily better than two, and the Access security system is not suited for large enterprise usage. The most commonly used is Database Password. A database password is simply a password that Access prompts you to type in when opening the database. A database can have only one password. You cannot assign a different password to different users.

Comparing Classical and Operant Conditioning Essay

I will be comparing classical and operant conditioning by explaining fear of heights. Fear of heights is known as Acrophobia. The phobia part does not occur until a person is in an environment that most people would be relatively fine in, such as attending a theme park or being in a building such as a sky scraper for example. Most of the time when treating someone with acrophobia therapists will use graded exposure therapy. Any fear starts by learning, so if a person has a fear of heights it is most likely due to an event that happened early on in life that made a dramatic change in the persons every day behavior, such as falling out of a tree at a young age. If a person has a severe phobia to heights behavior can vary. For example, a person can faint or have extreme anxiety when in an environment around heights. Another example to discuss, research does in fact prove that a certain amount of reluctance around heights is normal for humans and animals. In the 1960’s research psychologists J. Gibson and R. D.  Walker, conducted an experiment known as the visual cliff. The two researchers placed thirty six babies, one at a time on a counter top made of half solid plastic covered with a checkered cloth and the other half clear Plexiglas. Each baby would ponder when crawling and rely on the mother’s facial expression a happy expression would give the okay to keep crawling and an alarming look would signal the babies to stop crawling. This study shows that when we are faced to make an emotional decision people can be like the babies in the study done, we can remain on the counter top until we are faced with uncertainty. This study shows how cognition can be manipulated by emotion. So, if a person has a fear like heights, Psychologists often use conditioning or classical conditioning to help treat a person, because the fear is a learning process, and a person has to relearn which involves repeatedly pairing a neutral stimulus with a response. Doing this produces stimulus until the neutral stimulus elicits the same response. The visual cliff example given, is a great example of a conditioned response. If a person is influenced or is given a negative response it can contribute to fear and through life if more traumatic experiences follow eventually a person can be manipulated by the fear. The more negative reinforcement is involved the bigger the fear develops. For someone having a fear of heights, if the person knows they have to go somewhere a meeting for example, and they have to take an elevator to the 50th , floor, in that persons mind they are going to be going crazy with negative thoughts and feeling overwhelmed with anxiety. But, if the person tells themselves after it is done with â€Å"well what was the big deal? What was I so afraid of? †. That negative reinforcement turns into positive reinforcement eventually. This is known as operant conditioning. Sometimes medication for anxiety may have to be prescribed by a psychiatrist if the fear is so excessive. Talking about the fear is a good start, a psychologist can then determine if the fear was learned possibly through observation or if the fear was through a learned experience. If fear of heights is affecting a person’s environment then a change needs to be made in order help treat the fear. By using positive reinforcement and determining if the person’s behavior from the fear was caused by learning through experience or observed environmentally, it can help determine how to further treat the person. But, if the fear goes untreated the anxiety and stress from it will only grow bigger creating more of an issue for the person and being able to live their everyday lifestyle. Psychotherapy is very helpful in treating anxiety disorders and phobias . In order to treat acrophobia a person needs to find a therapist who can meet their needs. Therapists ill help focus on the best way to treat the person with this disorder, the most common way is using cognitive behavioral therapy. Restructuring a person’s thoughts into positive thoughts is another helpful tip used, and talking about the fear and identifying what is causing the fear to become so out of control, and lastly meeting on a regular basis and determining if medication is needed and seeing what the person with this fear can do in their everyday lifestyle to make themselves more comfortable until they are eventually feeling like they have control over the fear and the fear is no longer controlling them.

Lyceum Officials

Administrative Officials BOARD OF TRUSTEES Lorna Perez Laurel Chairman Roberto P. Laurel Sarah L. Lopez Rufino A. Tan Carlos P. Laurel Peter P. Laurel Eusebio A. Abaquin Josefin P. Laurel Antonio Jose U. Periquet, Jr. ADMINISTRATIVE OFFICIALS Roberto P. Laurel President Sarah L Lopez Vice President-Finance Conrado E. Inigo, Jr. , PhD Vice President for Academic Affairs Pompeyo B. Adamos Executive Director for Administration/Director, Human Resouces Jennifer D. Tucpi Registrar, Student Records Management Dept. Lizandro O. Ferrer Dean, Student Affairs Ma. Christina G. Aquino Executive Officer for Planning and Development Victorina H. Zosa, PhD Executive Director, Research and Publications Center Marilyn L. Ngales, PhD Director, Community Outreach and Service Learning Corazon M. Nera Director, Academic Resource Center Director, Guidance and Testing Center Alma G. Facto, PhD Director, Center for Contemporary Professional Education and Development Alfredo P. Diamante Director, Center for Language Education and Proficiency Rosemarie Arhlene E. Ampil Director, Publications Office Sandra G. Recto Director, Communication and Public Affairs Dept. Felipe R. Lorenzo VI Director, Information Technology Dept. Robert Frederick P. Hayden Jr. Artistic Director, Arts and Cultural Affairs Dept. Renato R. Ricafort Manager, Building and Grounds Dept. Robert Joseph G. Villa Comptroller Rizalina R. Benico Chief Accountant Alberto T. Lacsina ACADEMIC OFFICIALS Victor B. Endriga, PhD Dean, Graduate School Jose Ma. Gonzales Vice Dean, Graduate School Atty. Ma. Soledad D. Mawis Dean, College of Law Angela Ylagan Vice Dean, College of Law Rizalina A. Cruz Dean, College of Arts and Sciences Ma. Victoria M. Ac-Ac, PhD Dean Business Administration Samuel S. Chua Dean, College of Computer studies Leonardo C. Medina Jr. , PhD Dean, College of Engineering Ma. Christina G. Aquino OIC Dean, College of International Tourism and Hospitality Management Roberto Z. Zozobrado Deputy OIC Dean, College of International Tourism and Hospitality Management Amb. Reynaldo O. Arcilla Dean, College of International Relations Leonora N. Reyes Dean, College of Nursing