Introduction Essays (3116 words) - Isotopes Of Carbon, Radioactivity

Introduction The discipline of archaeology can open up the past to us in a way in which we can enter into a dialogue with our ancestors. There are many ways it can do this: stratigraphic excavation, pottery typology, socio-historic interpretation, etc. However, one thread running through this increasingly focused pursuit is that of dating the physical findings to a particular cultural timeline. This is crucial if we are to know, with as much certainty as is allowed, who we are speaking with. Indeed, dating may be the proverbial thread that holds entire pursuit together, without which the individual pieces of the puzzle might be compared to the children of Israel, who the author of Judges describes as each going off in their own direction. Like the king Judges so wistfully imagines, dating brings cohesiveness and direction to a potentially (or real?) chaotic situation. In this paper I will explore the particulars of radiocarbon dating; from its background and origin, to discussion of samples, method, results, and calibration. Background With the explosions of the first atomic bombs echoing in his thoughts, Willard F. Libby, working with A.V. Grosse, Ernest Anderson, and several students, pioneered the work on a theory that natural C14 not only existed, but that it could also be used as a method for dating certain artifacts of antiquity. Working under the premise of his 1946 paper that suggested C14 might exist in all living organisms, a team including Libby and Grosse collected readings from the Baltimore sewer system. It was discovered that methane collected from these sewers contained radiocarbon activity, whereas methane derived from petroleum did not. These findings gave strength to the theory suggested in his paper, but several years of additional research were needed. After their sewer experiments, global samples of wood were gathered in which the researchers discovered a consistent level of radiocarbon deposits. From that point on, the theory developed until it became widely accepted within the scientific com munity, culminating with Libby's acceptance of the Nobel prize for chemistry in 1960. The Origin of C14 Natural C14 is formed in the upper atmosphere when nitrogen reacts with neutrons. Neutrons are produced by cosmic rays bombarding the earth, and are thus dependent upon the level of cosmic ray bombardment, as well as the earth's natural ability to receive the rays from space. The only known deterrent to cosmic ray absorption is the earth's magnetic field. The stronger it is, the less the cosmic rays reach the earth. Once the C14 is produced, it exists in a very small quantity in carbon dioxide, a product of oxygen and carbon. From here, all living organisms take in C14 by either photosynthesis (plant life) or the food chain (breathing life). Since C14 is radioactive, and therefore destructive to life, it is necessary for all organisms to release C14 at basically the same rate they consume it. Those that do not release radioactive carbon as quickly as they absorb it, it is assumed, would not survive as a species. Consequently, in principle, there exists an equilibrium between the leve ls of C14 in the atmosphere and that which exists in all living organisms. When an organism ceases to live, it ceases also to take in C14, and the rate of release (radioactive decay) can then be measured and compared to values pertaining to the half-life of the isotope. At present, the best estimate for the half life of C14 is 5730! 40 years, thus making it an almost ideal determinant to archaeologists, and in particular archaeologists concerned with excavations in the middle east. Samples Because of the very nature of radiocarbon dating, the ideal sample pool is limited. Preferably the sample is organic in composition, and is free of any contamination, such as exposure to other organic material that would skew the readings. This is particularly important in terms of packing and shipping the sample to a radiocarbon laboratory. Below is a list of some potential samples and concerns for each. Charcoal and Wood are predominant among samples found at archaeological sites. Both are preferred because there is little chance of contamination. However, the possibility of underground water causing a change in C14 saturation needs to be considered with the charcoal. And, while not considered contamination per se, precut growth

Enzyme Biochemistry - What They Are and How They Work

Enzyme Biochemistry - What They Are and How They Work An enzyme is defined as a macromolecule that catalyzes a biochemical reaction. In this type of chemical reaction, the starting molecules are called substrates. The enzyme interacts with a substrate, converting it into a new product. Most enzymes are named by combining the name of the substrate with the -ase suffix (e.g., protease, urease). Nearly all metabolic reactions inside the body rely on enzymes in order to make the reactions proceed quickly enough to be useful. Chemicals called activators can enhance enzyme activity, while inhibitors decrease enzyme activity. The study of enzymes is termed enzymology. There are six broad categories used to classify enzymes: Oxidoreductases - involved in electron transferHydrolases - cleave the substrate by hydrolysis (uptaking a water molecule)Isomerases - transfer a group in a molecule to form an isomerLigases (or synthetases) - couple the breakdown of a pyrophosphate bond in a nucleotide to the formation of new chemical bondsOxidoreductases - act in electron transferTransferases - transfer a chemical group from one molecule to another How Enzymes Work Enzymes work by lowering the activation energy needed to make a chemical reaction occur. Like other catalysts, enzymes change the equilibrium of a reaction, but they arent consumed in the process. While most catalysts can act on a number of different types of reactions, a key feature of an enzyme is that it is specific. In other words, an enzyme that catalyzes one reaction wont have any effect on a different reaction. Most enzymes are globular proteins that are much larger than the substrate with which they interact. They range in size from 62 amino acids to more than 2,500 amino acid residues, but only a portion of their structure is involved in catalysis. The enzyme has what is called an active site, which contains one or more binding sites that orient the substrate in the correct configuration, and also a catalytic site, which is the part of the molecule that lowers activation energy. The remainder of an enzymes structure acts primarily to present the active site to the substrate in the best way. There may also be allosteric site, where an activator or inhibitor can bind to cause a conformation change that affects the enzyme activity. Some enzymes require an additional chemical, called a cofactor, for catalysis to occur. The cofactor could be a metal ion or an organic molecule, such as a vitamin. Cofactors may bind loosely or tightly to enzymes. Tightly-bound cofactors are called prosthetic groups. Two explanations of how enzymes interact with substrates are the lock and key model, proposed by Emil Fischer in 1894, and the induced fit model, which is a modification of the lock and key model that was proposed by Daniel Koshland in 1958. In the lock and key model, the enzyme and the substrate have three-dimensional shapes that fit each other. The induced fit model proposes enzyme molecules can change their shape, depending on the interaction with the substrate. In this model, the enzyme and sometimes the substrate change shape as they interact until the active site is fully bound. Examples of Enzymes Over 5,000 biochemical reactions are known to be catalyzed by enzymes. The molecules are also used in industry and household products. Enzymes are used to brew beer and to make wine and cheese. Enzyme deficiencies are associated with some diseases, such as phenylketonuria and albinism. Here are a few examples of common enzymes: Amylase in saliva catalyzes the initial digestion of carbohydrates in food.Papain is a common enzyme found in meat tenderizer, where it acts to break the bonds holding protein molecules together.Enzymes are found in laundry detergent and stain removers to help break up protein stains and dissolve oils on fabrics.DNA polymerase catalyzes a reaction when DNA is being copied and then checks to make sure the correct bases are being used. Are All Enzymes Proteins? Nearly all known enzymes are proteins. At one time, it was believed all enzymes were proteins, but certain nucleic acids, called catalytic RNAs or ribozymes, have been discovered that have catalytic properties. Most of the time students study enzymes, they are really studying protein-based enzymes, since very little is known about how RNA can act as a catalyst.

Rufus Stokes Profile Inventions

Rufus Stokes Profile Inventions Rufus Stokes was an inventor born in Alabama in 1924. He later moved to Illinois, where he worked as a machinist for an incinerator company. Rufus Stokes Air-Purification Device In 1968, Rufus Stokes was granted a patent on an air-purification device to reduce the gas and ash emissions of furnace and power plant smokestack emissions. The filtered output from the stacks became almost transparent. Stokes tested and demonstrated several models of stack filters, termed the clean air machine, in Chicago and elsewhere to show its versatility. Benefits of Rufus Stokes Invention The system benefited the respiratory health of people, but also eased the health risks to plants and animals. A side-benefit of reduced industrial stack emissions was the improved appearance and durability of buildings, cars, and objects exposed to outdoor pollution for lengthy periods. Patents Issued to Rufus Stokes #3,378,24 issued on 14/16/1968 for an exhaust purifier#3,520,113 issued on 7/14/1970 for an air pollution control device (shown in photo above)

An Action Plan For Student Survival Essay Example | Topics and Well Written Essays - 1250 words

An Action Plan For Student Survival - Essay Example When using these search engines, the information you get will be based on a keyword or phrase. It's vital to choose appropriate words and phrases that relate closely to your research. When doing research on how the expense of college deters student enrollment, the phrase "college costs" would return several appropriate articles. Searching library resources is very similar to an Internet search, but you have databases with a wide range of magazines, newspaper articles, and academic journals available. These sources are often higher quality and have greater academic credibility than typical websites. It's important to consider your source when searching to give your research the integrity that's needed. If a paper is being done on water pollution, information from a peer reviewed journal will be more reliable than information from an anonymous website called "I_hate_chemicals.com". Library resources are the most valuable tools that students have. In the world of Academics, there is nothing more important than honesty and integrity. It goes beyond the obvious incidents of cheating on a test with crib sheets, or writing a halfhearted report based on a condensed version of a book. Integrity requires regular attendance and timely completion of the assignments. It demands that you treat your courses with the level of respect that they deserve. Your college degree will be a voucher to people in the academic world that you have successfully completed the work, can be relied on to be informed, and that you have gained your GPA honestly. A major breach of honesty is plagiarism. Plagiarism is the copying someone else's words, research, or ideas and portraying them as your original work. It is one of the most serious infractions a student can make during their college experience, and can result in punishment that ranges from failing the course to possible expulsion (Plagiarism). Academic researching and reporting is a process of building new ideas on work that has previously been done by others. It depends on the information being accurate and not based on fake data. It is also built on the tradition of giving credit to the original creator of the ideas that we borrow. Almost all research and papers will be built on someone else's previous work and ideas, and it's vital that they receive adequate credit. While an Internet "cut and paste" paper may be the most glaring example of plagiarism, improper citations are the most numerous. Often, this is done because the student does not have the proper information on when and how to give credit. Whether we are using previously published statistics or paraphrasing a unique idea, it's necessary to give proper credit to the original author. This is done with conventional citation formats such as APA and MLA. These associations have manuals that outline not only how to write a proper citation, but also when to cite the original source. Spending time reading these guides and getting familiar with the requirements of academic writing will help insure that the school's policy of plagiarism is not violated and prevent what might otherwise be an innocent transgression of academic honesty. Developing Effective Study

Write a critique of an article of your choice.(optional topic) Essay

Write a critique of an article of your choice.(optional topic) - Essay Example The article gives them the knowledge of a child’s character and how they may see what they read in the stories they choose. The professionals will be able to see how ideas that they have fit into social contexts of the people around them.(Bosmajian,2005,p103) Children’s literature is a field that assumptions will have to be made to understand what the child thinks about their collective and personal values and issues they have. The article is about ‘the implied reader’ and how what they read tells us each a different idea of what is read. It is all in how we look at what is around us and the choices we make and interpret to bring meaning. (Bosmajian, 2005, p. 103) In summary this article is about how children’s literature can be used by professionals to help children find out about themselves through what they read. The readers will learn what makes them learn what they see and use that learning as they grow. According to Freud, â€Å"he saw that this is a therapeutic release for the author and a critical relationship between child and play and poet and language.† (Bosmajian, 2005, p.104) Freud also thought that desires and what society wants is a conflict and that we must make substitutions and make displacements and still be able to take our ideas and make one image to tell about ourselves. Jung thought â€Å"it is a therapeutic process that begins with recognition of the loss of original wholeness due to self-inflation or alienation of the ego.† (Bosmajian, 2005, p. 105) It is about the connections that we make between what we read and see that we make our choices known. Horney, Abraham, Klein, Winnicott and Lacan believe in Ego Psychology and object relations themes. They believe that we all need to self actualize ourselves to improve our identities through language and what we read. Lacan also

Misunderstandings :: essays research papers

  Ã‚  Ã‚  Ã‚  Ã‚  Thus far this semester, we have learned of how language functions as a whole on society, but Ià ¢Ã¢â€š ¬Ã¢â€ž ¢ll be doing something a little different. Let me start off with a question. Who here has gotten into a fight with their significant other or just a friend of the opposite sex over a misunderstanding, misinterpretation, or feel that they are just speaking another language and you donà ¢Ã¢â€š ¬Ã¢â€ž ¢t understand them?   Ã‚  Ã‚  Ã‚  Ã‚  This so-called phenomenon is best described by the metaphor of à ¢Ã¢â€š ¬Ã‹Å"men are from mars and women are from venusà ¢Ã¢â€š ¬Ã¢â€ž ¢ and thatà ¢Ã¢â€š ¬Ã¢â€ž ¢s why we speak different languages. We donà ¢Ã¢â€š ¬Ã¢â€ž ¢t really come from different planets, but we are very different in our communication styles. Our expression of language is affected by our sex and gender. This is epitomized by the ever so popular clichÃÆ' © of, à ¢Ã¢â€š ¬Ã…“I donà ¢Ã¢â€š ¬Ã¢â€ž ¢t understand women/men.à ¢Ã¢â€š ¬? And this clichÃÆ' © was verified by your answers to the question I just posed.   Ã‚  Ã‚  Ã‚  Ã‚  While the most obvious function of language is to communicate information, language also contributes to at least two other equally important, but less often recognized, functions: (1) to establish and maintain social relationships, and (2) to express and create the social identity of the speaker. In my paper I will attempt to verify how language is affected by sex and gender. My primary focus will be on Deborah Tannenà ¢Ã¢â€š ¬Ã¢â€ž ¢s work on understanding women and men in conversation.   Ã‚  Ã‚  Ã‚  Ã‚  Tannen discusses many disparities in language caused by gender such as men often seeking straightforward solutions to problems and useful advice whereas women tend to try and establish intimacy by discussing problems and showing concern and empathy in order to reinforce relationships. Female subculture uses language to build equal relationships, while male subculture uses language to build hierarchical relationships.   Ã‚  Ã‚  Ã‚  Ã‚  If conforming to the Sapir-Whorf hypothesis that language shapes the way we see the world, language allows people to pass on ideas influencing the younger generation. The gender identity that accompanies our sex is predetermined by our parentà ¢Ã¢â€š ¬Ã¢â€ž ¢s perception of sex and gender. Typically, little girls are raised to be sensitive and soft and to express their feelings, but boys are asked to be tough and detached from their emotions. Take for example a boy and a girl who play together and both fall down. Typically, the girl would be allowed to cry and will be picked up and taken care of while the little boy would be asked to stop crying and à ¢Ã¢â€š ¬Ã‹Å"suck it up.

Assignment Essay

Answer each question thoroughly and completely. Each question is worth up to 5 points, and the complete assignment is worth up to 30 points. 1. The first task will be to introduce yourself and let me know what your background is in music and online learning. Give your name, if you play (or have played) an instrument or sing, and if you’ve ever taken an online class. Answer: My name is Huy Huynh and this is the third year of me in Golden West College. I have not had a chance to take choir nor any music-related classes before so my knowledge about music is not as wise, but I really like to listen to music and I’d love to know more and learn about the development of music. I have taken online classes before and I know that it requires self-study, self-discipline and independence more than on-campus courses. 2. Explain why you have decided to take Music Appreciation online, and what two things you would like to get out of this class by the end of the course (besides a good grade). Answer: I have decided to take Music Apprecation online because I am curious about how has music developed and how are the music in the past and present different. By the end of the course, the two things I would like to get out of this class with are the knowledge and an understanding of music in the past centuries. 3. Part One in the book discusses the elements of music, including musical form. Find a song that you like that utilizes binary, ternary, or call and response form. Make sure you indicate the song title, artist, and how the song matches one of those forms. Answer: Twinkle Twinkle by Jane Taylor is the song that I have thought of at this  moment in which I think is Ternary form because it extends the idea of how shiny and mysterious the stars are in the little kids’ eyes and departure by bringing back the first section. 4. After reading and listening to the examples in the first few chapters, you have hopefully gained a little better understanding of pitch, range, and tone with instruments and voices. Describe the many varieties of musical sounds possible from the human voice. Be sure to consider issues such as range, social function, historical period, and regional styles when constructing your answer. Answer: Falsetto: is the lightest register and requires loose vocal cords and incomplete closure which produces a breathy voice that can sound quite feminine although it is generally used by men rather than women. Falsetto is a higher range than the head voice; it relies on completely relaxed vocal folds and may sound breathy. Imagine the Bee Gees singing â€Å"Stayin’ Alive†, or Terry Jones playing an old woman in Monty Python; that is the sound of the falsetto voice. It is generally more obvious in men using it, but women, in the higher voices, usually use falsetto voice adjustments. It is a difficult register to sing accurately in, and it tends to be rather soft, except when there is amplification through resonance by a well-tuned vocal tract. It also requires an uncomfortable muscle effort for many men. It is a quite distinct range from the head voice, and generally when singers describe their range they exclude the falsetto voice. Falsetto is a singing technique that produces sounds pitched higher than the singer’s normal range. Falsetto can also mean an artificially raised speaking pitch. This often occurs momentarily if repeatedly in males during puberty for psychosocial reasons. The break between voice registers, audible or not, is called the passaggio. The falsetto register is used by male countertenors to approximate the register in classical voice that previously employed castrati, in pieces written before castratism became socially unacceptable and eventually universally outlawed. It is also used by many male rock and roll singers such as Jon Anderson of Yes, King Diamond of Mercyful Fate, Justin Hawkins of the Darkness and the solo artist David Usher to produce their over-the-top soaring vocals. Many people consider women, because of physical differences from males, to not have or be capable of falsetto. However, many female singers, such as Mariah Carey, do employ falsetto to extend their range. Whistle: The physiology of the whistle register is the most poorly understood of the vocal registers. It is known that when producing pitches in this register vibration occurs only in some anterior portion of the vocal folds. This shorter vibrating length naturally allows for easier production of high pitches. The physiological process that causes this is not currently known. Though the whistle register is most commonly used to produce pitches above E6, it can be used to produce lower pitches. By the physiological definition just detailed, it is a configuration of the vocal folds and not a range of pitches. There is, however, no universally agreed upon scheme for classifying vocal registers, so it is common to see other definitions. See the article on vocal registration for a discussion. In the European classical music, the whistle register is only rarely called for. When it is, it is exclusively used by coloratura sopranos to produce pitches above C6. Probably the most well-known example of the whistle register in European classical music is the aria â€Å"Der Hà ¶lle Rache kocht in meinem Herzen† from the opera Die Zauberflà ¶te; it calls for several pitches above C6, up to F6. In the popular music of the West, the whistle register is used more often than in its classical music. It is used with more variety and to produce  much higher pitches than are called for in classical music. It is most often used by females – its best known exponent almost certainly being Mariah Carey – though there are a few male singers who use it. See the category â€Å"Whistle register singers† (linked below) for a more comprehensive list and individual singers’ articles for more detail. There are also non-musical uses of the whistle register. Famously, a properly pitched whistle register tone can shatter glass. It is also common for children of all sexes and for young women to shriek loudly in a way that sounds much like the whistle register, though it is unknown whether the physiological mechanism is in fact the same. Yodeling: (or Yodelling) is a form of singing that involves rapidly switching from the â€Å"chest voice† to the â€Å"head voice† making a high-low-high-low sound. This vocal technique is found in many cultures throughout the world. In Swiss folk music, it was probably developed in the Swiss Alps as a method of communication between mountain peaks, and it later became a part of the traditional music of the region. In Persian and Azeri Classical musics, singers frequently use tahrir, a yodeling technique that oscillates on neighbor tones. In Georgian traditional music, yodelling takes the form of krimanchuli technique. In Central Africa, Pygmy singers use yodels within their elaborate polyphonic singing. Yodeling is often used in American bluegrass and country music. To yodel, one sings a scale continuously upwards, until one’s voice â€Å"breaks† (switches octaves) into one’s â€Å"head voice† (also known as falsetto in men). This point is one’s â€Å"voice break†. Then one must go back down a note, and up again, over the voice break. This is done repeatedly at a loud volume. 5. Choose four musical instruments, each instrument representing one of the four families of instruments. Describe the physical appearance and how sound is produced for each instrument, and what the most common use of each instrument is in music. Answer: Four musical instruments : Trumpet: brass wind musical instrument of part cylindrical, part conical bore, in the shape of a flattened loop and having three piston valves to regulate the pitch. Its origin is ancient; records of a type of simple valveless trumpet are found in China from as early as 2000 B.C., and it is mentioned in the Bible and in Greek and Roman history. It attained its present shape early in the 15th cent., at which time it became an important ceremonial instrument. It was used in the opera orchestra as early as Monteverdi’s Orfeo (1607) and became a standard orchestral instrument later in the century. At this time the trumpet lacked valves, and a highly developed technique existed for playing in the upper register of the instrument, where a complete diatonic scale was available. The trumpet parts of Bach and Handel were written for such a style. Later in the 18th cent. this bright quality was not desired, and the trumpet was used more in its lower register. The instrument will accept a mute, used to repress some of its stridency. Crooks, additional lengths of tubing, were added to the natural trumpet to allow the adjustment of pitch. This was a fairly clumsy method, however, and was superseded in the early 19th cent., when valves were added. A transposing instrument, it is now most often in B flat. A bass trumpet in C was first called for by Wagner. The trumpet is an important member of most dance and jazz bands. Drum: in music, percussion instrument, known in various forms and played throughout the world and throughout history. Essentially a drum is a frame over which one or more membranes or skins are stretched. The frame is usually cylindrical or conical, but it comes in many other shapes. It acts as a resonator when the membrane is struck by the hand or by an implement, usually a stick or a whisk. The variety of tone and the volume of sound from a drum depend on the area, tension, and material of the membrane that is struck and, more particularly, on the skill of the player. The rhythmic effects of drum playing can be exceedingly complex, especially the intricate polyrhythmic arrangements of Asian and African cultures. The modern orchestra may have as many as five drums under one player, allowing an impressive range of tones. In Western music the kettledrum is of special importance. A metal bowl with a membrane stretched over the open side, it is the only drum that can be tuned to a  definite pitch. It originated in Persia and spread throughout Asia, Africa, and Europe; it was later adapted into orchestral music. The kettledrum was formerly tuned by hand screws placed around the edge; now it can be tuned by a pedal mechanism. The bass drum, especially popular in military bands, is a huge wooden cylinder with a drumhead (membrane) on both ends. The snare drum (sometimes called the side drum) also has a drumhead at either end; across one end are stretched gut strings wound with wire. These strings rattle when the other end of the drum is beaten. The tenor drum is primarily used in military bands and is normally played with small felt sticks. The tambourine, known from Roman times, is a single-headed small drum, usually with jingles attached to the frame; it is shaken and struck by hand. Violin: family of stringed musical instruments having wooden bodies whose backs and fronts are slightly convex, the fronts pierced by two &florin;-shaped resonance holes. The instruments of the violin family have been the dominant bowed instruments because of their versatility, brilliance, and balance of tone, and their wide dynamic range. A variety of sounds may be produced, e.g., by different types of bowing or by plucking the string (see pizzicato). The violin has always been the most important member of the family, from the beginning being the principal orchestral instrument and holding an equivalent position in chamber music and as a solo instrument. The technique of the violin was developed much earlier than that of the viola or cello. The double bass is not a violin but a viol. Flute: in music, generic term for such wind instruments as the fife, the flageolet, the panpipes, the piccolo, and the recorder. The tone of all flutes is produced by an airstream directed against an edge, producing eddies that set up vibrations in the air enclosed in the attached tube. In the transverse flute, the principal orchestral flute today, the edge is on the mouth hole on the side of the instrument, over which the player blows. The oldest known archaeological remains of any musical instrument are those of flutes carved of bone and ivory that were found in SW Germany and are at least 42,000 years old. The oldest complete, playable flute is a nearly 9,000-year-old bone flute that was found in E central China. The transverse flute is also an extremely old instrument, universal in ancient and primitive cultures; it was known in Europe by the 9th cent. During the baroque period both the recorder and the transverse flute were used in the orchestra, the latter by Lully in 1672. In the classical period the transverse flute displaced the less-powerful recorder, which could not match its dynamic range. In the 19th cent. the transverse flute assumed substantially its present form after the improvements of Theobald Boehm (1794–1881), who ascertained the acoustically correct size and placement of the holes and devised an ingenious system of keys to cover them. The flute was originally made of wood but is now most often of silver. It is the most brilliant and agile of the orchestral woodwinds, and it also has a considerable solo and chamber-music literature. The transverse flute has been made in several keys, but the C flute has long been standard. The alto flute in G, a fourth below the regular flute, is notated as a transposing instrument. 6. This is an activity question. For 1/2 to 1 hour this week, you are to pay attention and write down the music you hear; watch TV for one show or go to the mall for a little while and walk around to listen to all the music. Notice how much music is a part of EVERYTHING we do. Now, after you’ve written down what you heard, provide a detailed summary of what you found out. Do you notice a pattern of aggressive music if you are watching a sporting event (even in the commercials)? Is there a lot of percussion and brass, electronic sounds, or? Was there any pattern at all, or just random? Write about what you heard. Answer: While I was walking in a mall and listened to the music in the shopping stores, I almost forgot what was I supposed to do and walked straight to the stores in which I think that music can attract customers by bringing lively engery to them. Yes, I do notice a pattern of aggressive music when I am watching a sporting event. There is a lot of percussion in which people play drums, bells, and brasses are almost every where to cheer up their teams. I heard people are just playing percussion and brass in random to brighten the atsmosphere and inspirit their teams’ motivation.