Doppelganger Essay Example | Topics and Well Written Essays - 2000 words - 4

Doppelganger - Essay Example The Nolans utilize nonlinear account way to deal with catch the topics in the screenplay in an entirely different manner that engages, yet catches new style of a 21st century film. This paper investigations how various styles, for example, mise-en-scene, cinematography, altering and sound plan influence the general result of the topics and feel in â€Å"The Prestige.† Robert Angier and Alfred Borden cut the picture of two would-be illusionists working in agreement in Victorian London, yet upon the unintended disposal of Angier’s spouse, the two characters betray one another; Bordwell (2013) noticed that â€Å"with Julia’s passing, the men become enemies.† Hell-keen on demonstrating that the other is more vulnerable and inadequate, the two gatherings find another middle or center in the exquisite Olivia Wenscombe. By excellence of Wenscome, every one of the two sinks further into riddle trying to exhibit that they he is the more impressive entertainer. â€Å"The Prestige† takes an environmental turn that flawlessly coordinates magic’s normal puzzle and secrecies with very much associated scenes that continually guarantee the crowds follow the story as far as possible while pursuing ceaseless answers for the riddles. Despite the fact that, the storyline bounces starting with one timespan then onto the next with an end goal to underscore the earnestness of the competition between the performers, chief Christopher Nolan obviously portrays the scenes to stay away from any disarray among the crowd. The deliberately planned mise-en-scenes style including the two characters on the closer view around evening time in the outside scene, with lines of bulbs planted to the foundation, for instance, not just makes an interesting public activity of the two characters toward the start of the film, yet in addition summons a specific illusory worth that is both alluring and strange (Bordwell, 2013). Neither one nor the other heroes is dominatingly amiable particularly in obscurity garments they enhance and their shadowy developments. The two men have by one way or another

Is aggression in man Adaptive Essay Example | Topics and Well Written Essays - 1000 words

Is animosity in man Adaptive - Essay Example After detecting them, they are refined through inward alterations achieved by learning and hormonal changes. Animosity at that point is really an activity driven by a modified arrangement of synthetic reactions inside the body that readies a creature to the genuine or looming danger. There are eight types of hostility as per E.O. Wilson. Regional, predominance, sexual, parental disciplinary, weaning, moralistic, savage, and hostile to ruthless animosity, are instruments by which creatures improve their qualification for endurance and propagation (1980, p.118). For instance, by showing regional hostility, a creature will secure his both living space and his family. These modified organic reactions to different ecological dangers bear elevated levels of heritability, as indicated by the examines made by E.O. Wilson, which develops its hereditary nature and gives verification that forceful conduct is versatile. Moreover, a few species' forceful practices are specific, generalized and exceptionally unsurprising (1980, p.122). This further approves animosity's versatile nature. People face similar types of hostility and, essentially carry on forcefully as those of creatures. A human dad is likewise defensive on his home a similar path as a lion is to his region. He can get savage to a point that he would execute somebody in the event that he observes a cheat taking properties in his home. This is one a battle or flight reaction of people to unfriendly conditions. People are likewise attentive about the outer ecological possibilities, for example, experiences outside the gathering, food, swarming, regular change (Wilson 1980, 122-123). Wilson gave a similarity between a trial of packed of felines and rodents to that of individuals in focus and detainees of-war camps wherein stuffing caused both referenced creatures and people to carry on forcefully to one another during extraordinary conditions (1997, p.127). While encountering upsetting and compromising conditions, people and creatures share similar responses. People likewise have the inner instruments as that of creatures that outcomes to forceful conduct. Both have the abilities to hold past encounters in their cerebrums. In spite of the fact that there are contrasts in the impacts of hormonal discharges for various creatures, explicitly vertebrates (as in the various responses of estrogen to various species) hormones are as yet answerable for the hostility of the two creatures and people. A genuine case of this is epinephrine, a hormone that triggers the battle or-flight reaction in people. Besides, the two methods of rivalry recommend that creatures have contrived different approaches to pick up preferred position of others. While direct hostility, being the principal mode, can achieve this objective, a few species executes a few different ways to commonly rebuff one another. A few types of ants utilize authoritative methods so as to win the opposition (Wilson, 1980). People have as a rule been taking part in rivalry both by direct hostility and by common shock. Huge numbers of our exercises are serious in nature and members thus use animosity in a gainful manner to command their opponents. In any case, however people experience similar data sources that causes animosity and offer the equivalent inside mechani

How To Write A Strong Thesis Statement

How To Write A Strong Thesis Statement EP 34: How To Write A Strong Thesis Statement EP 34: How To Write A Strong Thesis Statement Have you ever read the introduction to an essay and asked, So what? This is likely because it did not have a strong thesis statement. This week Cath Anne will walk you through the process of writing a strong thesis statement and then give you 3 tips on how to take your thesis statement to the next level! Join us on Episode 34! Looking for study tips, help with essay writing, or advice on how to be a better student? Welcome to The Homework Help Show, a weekly show where we teach, assist, and offer valuable insights for student life. From study hacks to writing tips, discussions about student mental health to step-by-step guides on academic writing and how to write a resume, weve got you covered. Want your questions answered? Write them below or join the conversation on social media using the hashtag #askHHG TRANSCRIPT: Cath Anne: [00:00:05] Hi there and welcome back to our channel. My name is Cath Anne and this is Episode 34 of The Homework Help Show. On The Homework Help Show we provide you with valuable content for your academic and student life. Just a quick reminder before we do jump into the content for today. Join me every Monday at 7:00p.m. Eastern Standard Time on Instagram live. I will check in and have a little chat and remind you guys to check out our upcoming videos. Love to see you guys there. Cath Anne: [00:00:40] This week we will be reviewing how to take your thesis statement to the next level. If youre interested, we reviewed how to write an effective thesis statement in Episode 3 of The Homework Help Show. So, check that out. We will link it in the description box below. This week we will review the fundamentals of writing a thesis statement and then I will give you three steps to take your thesis statement to the next level. Oh yeah, and we might talk a little bit about pizza. Cath Anne: [00:01:13] What? Wait for it. Okay lets get started. Cath Anne: [00:01:19] Have you ever read the opening paragraph of a paper and asked, So what? If so this is probably because the paper didnt have an effective statement. Thesis statement. Dont underestimate the value of a good thesis statement. It tells your reader what to expect and what youll be arguing throughout the course of your paper. Cath Anne: [00:01:42] Okay, so how do we write a goods thesis statement? This is where we talk about pizza. Cath Anne: [00:01:50] Step number 1: pick a topic. To write an effective thesis statement you first need a topic for your paper. Todays topic pizza! Now that you have a topic for your paper. Think about what you want to discuss. Cath Anne: [00:02:08] This is where you start to begin to develop your thesis statement. Cath Anne: [00:02:13] Step number 2: Be specific. Lets begin to develop some ideas about pizza. Cath Anne: [00:02:23] A lot of people love pizza. The problem with this thesis is that its not very specific. Can we make it more specific by asking, who eats pizza? Why do they eat pizza? Who loves pizza? And why do they love it? Cath Anne: [00:02:42] Lets get more specific. University students love pizza because most pizza places deliver. Thats a bit better but readers are still going to ask, So what?. You really want to make sure that people care about your pizza argument. [00:03:07] So, lets keep trying. You havent yet included your opinion about pizza and we all know you love pizza. [00:03:17] Step 3: be arguable. The most recent revision, University students love pizza because most places deliver does not argue anything. It just states of fact. Think about how you can create an argument about pizza. What is it that you want to say about pizza? Imagine that youve been cramming all night at the library and you decide to order some food with your friends. One of your friends suggests McDonalds and you feel very strongly that you should order pizza. [00:03:56] How would you convince them to order pizza? Lets try another revision. University students love pizza because its convenient. Now were getting a little bit closer. We have a specific statement, and it makes an arguable point. We are still missing some information though, it doesnt explain why it is convenient and it doesnt tell the reader the key points of the paper. [00:04:29] Moving on to Step 4: create a mini outline of the paper. A thesis statement will provide readers with a clear outline of what they can expect in the remainder of the paper. When readers see the thesis statement as is, they will understand the subject and the argument. But they wont know what to expect in the remainder of your paper. [00:04:53] Lets do another revision. University students like pizza because it is convenient, healthy, and cheap. [00:05:05] This thesis statement seems pretty good, right? It includes a topic. The point is arguable. It gives a mini outline of what to expect. [00:05:17] However, the wording is not appropriate for an academic paper. You still have to revise and make sure that it is clear and academically appropriate. [00:05:29] Step 5: choose the right words. Were almost finished, I promise. Lets look at the thesis statement as is: University students like pizza because it is convenient, healthy, and cheap. [00:05:46] Ask yourself these questions to refine your thesis statement: [00:05:51] Do all students like pizza? Are the words cheap and healthy the most effective words to get your point across? [00:06:01] Lets try another revision. Many university students love pizza because it is budget friendly, convenient, and a relatively healthy option. Now thats a thesis statement. It includes a topic. Your argument. It is clear specific, arguable and it provides the reader with a mini outline of your paper and of course now it is worded effectively. That thesis statement deserves celebration. Lets order some pizza. [00:06:42] Okay, while we wait for the pizza, we have written an effective thesis statement. Now, lets talk about three ways to take your statement to the next level. Make sure you do your research prior to writing a thesis statement. Being familiar with the information out there well help you to find a legitimate argument and be familiar with the topic that youre discussing. It will make it way easier for you to write an effective thesis statement. Dont bury your thesis statement in the body of your first paragraph. You wanted to be at least the second to last sentence or the very last sentence in your introduction paragraph. Finally be creative and use your own words when you copy another persons opinion or argument you are risking the chance of plagiarism. Writing a well crafted original thesis statement will get you good points with your professor and make you stand out as a student. [00:07:56] Okay. So, I hope that was a benefit to you. I dont want to hold you up. Youre probably waiting for your pizza. If you do have any questions, please let me know in the comments below. If you want to listen to any more of our content, weve also linked all of our social media platforms in the description box. Definitely check those out. If you did like this video, please give it a thumbs up and make sure you subscribe to your channel so you can stay in the loop. Thats it for this week guys. I hope to talk to you soon. I hope this is a benefit. Take care. How To Write A Strong Thesis Statement EP 34: How To Write A Strong Thesis Statement EP 34: How To Write A Strong Thesis Statement Have you ever read the introduction to an essay and asked, So what? This is likely because it did not have a strong thesis statement. This week Cath Anne will walk you through the process of writing a strong thesis statement and then give you 3 tips on how to take your thesis statement to the next level! Join us on Episode 34! Looking for study tips, help with essay writing, or advice on how to be a better student? Welcome to The Homework Help Show, a weekly show where we teach, assist, and offer valuable insights for student life. From study hacks to writing tips, discussions about student mental health to step-by-step guides on academic writing and how to write a resume, weve got you covered. Want your questions answered? Write them below or join the conversation on social media using the hashtag #askHHG TRANSCRIPT: Cath Anne: [00:00:05] Hi there and welcome back to our channel. My name is Cath Anne and this is Episode 34 of The Homework Help Show. On The Homework Help Show we provide you with valuable content for your academic and student life. Just a quick reminder before we do jump into the content for today. Join me every Monday at 7:00p.m. Eastern Standard Time on Instagram live. I will check in and have a little chat and remind you guys to check out our upcoming videos. Love to see you guys there. Cath Anne: [00:00:40] This week we will be reviewing how to take your thesis statement to the next level. If youre interested, we reviewed how to write an effective thesis statement in Episode 3 of The Homework Help Show. So, check that out. We will link it in the description box below. This week we will review the fundamentals of writing a thesis statement and then I will give you three steps to take your thesis statement to the next level. Oh yeah, and we might talk a little bit about pizza. Cath Anne: [00:01:13] What? Wait for it. Okay lets get started. Cath Anne: [00:01:19] Have you ever read the opening paragraph of a paper and asked, So what? If so this is probably because the paper didnt have an effective statement. Thesis statement. Dont underestimate the value of a good thesis statement. It tells your reader what to expect and what youll be arguing throughout the course of your paper. Cath Anne: [00:01:42] Okay, so how do we write a goods thesis statement? This is where we talk about pizza. Cath Anne: [00:01:50] Step number 1: pick a topic. To write an effective thesis statement you first need a topic for your paper. Todays topic pizza! Now that you have a topic for your paper. Think about what you want to discuss. Cath Anne: [00:02:08] This is where you start to begin to develop your thesis statement. Cath Anne: [00:02:13] Step number 2: Be specific. Lets begin to develop some ideas about pizza. Cath Anne: [00:02:23] A lot of people love pizza. The problem with this thesis is that its not very specific. Can we make it more specific by asking, who eats pizza? Why do they eat pizza? Who loves pizza? And why do they love it? Cath Anne: [00:02:42] Lets get more specific. University students love pizza because most pizza places deliver. Thats a bit better but readers are still going to ask, So what?. You really want to make sure that people care about your pizza argument. [00:03:07] So, lets keep trying. You havent yet included your opinion about pizza and we all know you love pizza. [00:03:17] Step 3: be arguable. The most recent revision, University students love pizza because most places deliver does not argue anything. It just states of fact. Think about how you can create an argument about pizza. What is it that you want to say about pizza? Imagine that youve been cramming all night at the library and you decide to order some food with your friends. One of your friends suggests McDonalds and you feel very strongly that you should order pizza. [00:03:56] How would you convince them to order pizza? Lets try another revision. University students love pizza because its convenient. Now were getting a little bit closer. We have a specific statement, and it makes an arguable point. We are still missing some information though, it doesnt explain why it is convenient and it doesnt tell the reader the key points of the paper. [00:04:29] Moving on to Step 4: create a mini outline of the paper. A thesis statement will provide readers with a clear outline of what they can expect in the remainder of the paper. When readers see the thesis statement as is, they will understand the subject and the argument. But they wont know what to expect in the remainder of your paper. [00:04:53] Lets do another revision. University students like pizza because it is convenient, healthy, and cheap. [00:05:05] This thesis statement seems pretty good, right? It includes a topic. The point is arguable. It gives a mini outline of what to expect. [00:05:17] However, the wording is not appropriate for an academic paper. You still have to revise and make sure that it is clear and academically appropriate. [00:05:29] Step 5: choose the right words. Were almost finished, I promise. Lets look at the thesis statement as is: University students like pizza because it is convenient, healthy, and cheap. [00:05:46] Ask yourself these questions to refine your thesis statement: [00:05:51] Do all students like pizza? Are the words cheap and healthy the most effective words to get your point across? [00:06:01] Lets try another revision. Many university students love pizza because it is budget friendly, convenient, and a relatively healthy option. Now thats a thesis statement. It includes a topic. Your argument. It is clear specific, arguable and it provides the reader with a mini outline of your paper and of course now it is worded effectively. That thesis statement deserves celebration. Lets order some pizza. [00:06:42] Okay, while we wait for the pizza, we have written an effective thesis statement. Now, lets talk about three ways to take your statement to the next level. Make sure you do your research prior to writing a thesis statement. Being familiar with the information out there well help you to find a legitimate argument and be familiar with the topic that youre discussing. It will make it way easier for you to write an effective thesis statement. Dont bury your thesis statement in the body of your first paragraph. You wanted to be at least the second to last sentence or the very last sentence in your introduction paragraph. Finally be creative and use your own words when you copy another persons opinion or argument you are risking the chance of plagiarism. Writing a well crafted original thesis statement will get you good points with your professor and make you stand out as a student. [00:07:56] Okay. So, I hope that was a benefit to you. I dont want to hold you up. Youre probably waiting for your pizza. If you do have any questions, please let me know in the comments below. If you want to listen to any more of our content, weve also linked all of our social media platforms in the description box. Definitely check those out. If you did like this video, please give it a thumbs up and make sure you subscribe to your channel so you can stay in the loop. Thats it for this week guys. I hope to talk to you soon. I hope this is a benefit. Take care.

Practice in Identifying Helping Verbs in English

A helping verb (also called an auxiliary verb) is a verb (such as have, do, or will) that comes before the main verb in a sentence. This exercise will give you practice in identifying helping verbs. Instructions Each of the following 15 sentences contains at least one helping verb. Identify the helping verb(s) in each sentence, and then compare your answers with those on page two. Keep in mind that more than one helping verb (such as has been) can be used in front of a main verb. In addition, remember that sometimes another word (such as not) separates the helping verb from the main verb. My sister has promised to come with us to the Thousand Islands.Sam and Dave will prepare a PowerPoint presentation for the class.I must return to Yellowstone National Park to appreciate its significance and astonishing beauty.We should read another book by E.B. White.We should not waste our time watching TV.My brother will be flying out of Cleveland tomorrow morning.We have been studying all week for the final exam.Katie has not been studying very hard.My car was stolen by a couple of kids out for a good time.I can help you tonight if you will drive me home later.Thousands of people, braving the cold and the rain, had been waiting for hours for the band to show up.Tony and his friends are bored with their lives, and so they are always looking for trouble.I know that I must make a decision soon, but first I may ask my teacher for advice.Marie could not start her car this morning, so she will probably not go into work at all today.I have finished the quiz on helping verbs, and now I am going home.   Below are the answers (in bold) to the practice exercise in  Identifying Helping Verbs. My sister  has  promised to come with us to the Thousand Islands.Sam and Dave  will  prepare a PowerPoint presentation for the class.I  must  return to Yellowstone National Park to appreciate its significance and astonishing beauty.We  should  read another book by E.B. White.We  should  not waste our time watching TV.My brother  will be  flying out of Cleveland tomorrow morning.We  have been  studying all week for the final exam.Katie  has  not  been  studying very hard.My car  was  stolen by a couple of kids out for a good time.I  can  help you tonight if you  will  drive me home later.Thousands of people, braving the cold and the rain,  had been  waiting for hours for the band to show up.Tony and his friends  are  bored with their lives, and so they  are  always looking for trouble.I know that I  must  make a decision soon, but first I  may  ask my teacher for advice.Marie  could  not start her car this morning , so she  will  probably not go into work at all today.I  have  finished the quiz on helping verbs, and now I  am  going home.

My Childhood Memories Of A Middle Class Family - 1040 Words

I was born in a middle-class family in southern China. Both of my parents are white-collar workers. We lived in a small apartment with an old turtle. As the only child, my parents have a lot of expectations for me, but become an artist is not one of it. Like what they said, There are not art cells in our body. After all, we are just ordinary people. In my childhood memories, I was not allowed to play outdoor like other children because I am really easy to get sick. My mom quit her job in order to take better care of me. According to her, my favorite activity was to scribble on the wall, I have my masterpiece on any place in the house that I can touch. My mom very supports suck activity, and sometimes she would even join me. I remember when I was five, my mom bought me a drawing pad with 12-color pencils as the birthday gift. From now on, you are not allowed to draw on the wall! she said. But I do it anyway. When I was in elementary school I will stay at my grandparents house during weekdays, and spent the weekend with my parents. I performed well in school, especially in drawing class. I always brought back all kinds of work I did in class to show them. My mom will hang them in a prominent place on the wall. Anyone who comes and visits us will see those works. Although they are surprised about my potential talet, but no one suggests that I should go further with drawing. Time flies, I graduated from elementary school, and went into junior high. I still draw,Show MoreRelatedBiosocial Development And Biosocial Development1276 Words   |  6 Pagesdiscontinuous development that is occurring at various stages of their young and middle child life span. In each section of my paper I plan to include specific subsections on the biosocial, cognitive, and psychosocial development of my chosen subject. This chosen subject will be my eleven year old sister, Faith Elizabeth Lattimore. 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However, life wouldn’t let me do so. There is one song that can express my feeling right now. It was â€Å"See you Again† by Wiz Khalifa. This song reminds me some of my happiest time in my life with my friends. The song â€Å"See you Again† is fromRead MorePersonal Human Growth And Development Timeline944 Words   |  4 Pagestimeline Going through this class and learning about each of the different phases was interesting. To go through and see which ones I have personally experienced. When we started to get in late adulthood it was slightly depressing thinking about growing old and the factor of death. Each part of our development we go through will mater when we reach that point in our lives if you think about it in that context. That’s why it is important to know your family history in order to plan for you futureRead More Seamus Heaney Tony Curtis Essay1208 Words   |  5 Pagesfather. 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Reservation Documentation Free Essays

1. 1 Statement of the Problem We want all of our system releases to go to production seamlessly, without defects, where everyone is aware and informed of the outcomes and status. The general problem of the client is they need a computerized system that can reserve the room and resort that they want, for them to be easy to list the number of rooms that is available, this system will emphasize the difference of using the manual reservation and the computerized reservation. We will write a custom essay sample on Reservation Documentation or any similar topic only for you Order Now The Paradise tours is the company who needed this computerized system for reservation, It is important to fix this problem because if we will not focus in this robber, it will be hard for the Paradise tours staff to list the activities that they need to list, if our system could help their problem then they will not have hard time to reserve their customers room. 1. 1 The Current State of the Technology Apparently, the business establishment is currently using the traditional manual system of Reservation processing. That of which includes the facilities, amenities, pools, rooms of the said company. Considering that it is a large line of business that’s Why they needed the computerized system for them to manage the reservation process in 1. 2 Objectives * To avoid manual and repetitive work Real time information of availability of rooms * Improving decision making * To provide a web site that can allow a user to search and reserve a hotel room or cancel his/her reservation over the internet anytime. * To record details of various activities of the user. 1. 3. General Objectives * If we’re using Manual reservation, it may consume more time in listing the information for reservation. When using our system, it will be easier for the staff record and manipulate the information in reserving. * It will be clearer to see the availability of rooms, so you can know already if the room is available or not. Enhances your decision ability in choosing. * It will be easier for the customer to bro wse the different information of different resorts and hotels and at the same time, if they changed their mind, they can cancel or change their reserving schedule. You can see the log activities of cancelled reservation, occupied rooms, etc. Managed by the user. 1. 3. 2 Specific Objectives 1 . To increase the security between the management and staff. And easily to save and retrieve files through computer. 2. To lessen time consume. In Just one click you can browse and you can see easily see the accommodation of each toll and restaurant and also the promo they give than the manual reservation, you need go to the hotel or resort to inquire to. 3. To spend less time in searching and retrieving of files. By using our database you can easily search, retrieve and also add anything you want in just one click than the manual step or reservation 4. To become make easier to find the availability rooms. You can easily browse and see the availability of each rooms and their accommodation, just you need to do is to their website than go to their place instantly. 1. 3. 3 Scope and Limitations This study is conducted to know the reason behind the represents on how will their purposed systems will help the Hotel Management. Hotel Reservation System is fully scalable and designed to provide extensive flexibility and varied choices. Typical hotel reservation and commerce hotel system software reclassification’s currently in p lace and available today are technically designed to achieve only one objective function, which to connect BUYER TO SELLER. This study mainly focused on providing retailing business application using computerized system that enables businesses to track services and aims to provide accurate and reliable recess on every transaction especially in a hotel and resort reservation. This study looked into a better impact of using technology today on how it affects our daily lives especially for being the customer. With this studies it can help our beneficiaries to know the differences of using manual system to a computerized generation today, prioritize is to prove and to give them the right information. Limitation Hotel Reservation System is designed to manage all types of hotel bookings, made directly by guests . Lets powerful hotel reservation, marketing ; merchandising features give you the ability o control dynamic room or tour allotments, distribute confidential trade rates, provide varying rates and commissions, multiple seasons, distributing last minute rates, multi-currency including the Euro and so much more. The hotel reservation system will allow you to dynamically control most of your hotel reservation without the need for expensive web designer. The existing system only provides text-based interface, which is not as user-friendly as Graphical user Interface. The transactions are executed in off-line mode, hence on- line unless it is opened by the user. 1. 3. Methodology of study waterfall Model (OSDL) The system Development Life Cycle (OSDL) is a traditional methodology used to develop, maintain and replace or enhance information system. The main reason OSDL model is chosen because in OSDL it is possible to complete some activities in one phase in parallel with some activities of another phase. The life cycle can also be interactive that is phase are repeated as required until an acceptable system is found. Phase 1: Project identification and selection In this phase the project information system needs are identified and analyzed such identified the title of the project that is Web Based Computerized Hotel and Resort Reservation, scope and objective of the Computerized Hotel and Resort Reservation. Phase 2: Project Initiation and Planning During this phase the chart has been developed as a time line to determining the task involve in developing the Computerized Hotel and Resort Reservation. Phase 3: Analysis In the phase, the existing system is studies by collecting the information through the Internet and analyzed the information to get alternatives for the use of proposed system. Phase 4: Design Logical design is the fourth phase in OSDL methodology. The functional features chosen for the proposed system in Analysis phase are described. Part of the logical design of information system is to devise the user interface. The interface plays an important role to connect the user with the system and is thus extremely important for the security of users. 1. 3. 5 Data Gathering Procedure and Output These are the procedure or tools for gathering our data in research used as basis for our conclusions or making our system. Some of our procedures are interviews, observations, research and analysis used by the proponents as they conduct the proposed study. Interview: we interview of some hotels and resort about their different accommodations and other important information the we need to know and what details we need to input into our systems and to have an idea about the reservation of a hotel or resort Observation: we observe different hotels and resort of how they operate their business, we also observe for us to know what is the advantage and limitations of manual reservation system through computerized reservation system. Research and analysis: also hotels and resort for getting important information we need. How to cite Reservation Documentation, Papers

Leung Hoi Ning (14) Class 6S Group No. 8 Date of experiment 9-12-03 Essay Example

Leung Hoi Ning (14) Class: 6S Group No.: 8 Date of experiment: 9-12-03 Essay Objective We are studying the simple harmonic motion of a pendulum by attaching a ticker-tape to the bob and analyzing the dots marked on the tape.Experimental Design- Apparatus: 0.5 kg ringed mass1.5 m length of stringTicker-tape timerTicker-tapeLow voltage power supply (a.c.)Retort stand and clamp- Procedure for getting the ticker-tape1. A string with 1.5 m long was measured and tied with the 0.5 kg ringed mass2. Set the pendulum as shown in figure 1Figure 13. The ticker-tape timer was connected to the low voltage power supple (a.c.)4. The retort clamp was used to hold the clamp tightly so it would not vibrate when the mass was swinging.5. A 30cm ticker-tape was attached to the ringed mass6. The 0.5 kg ringed mass was pulled to one side with amplitude of 13cm from the equilibrium position.7. The power supply and the ticker-tape timer were switched on.8. The 0.5 kg ringed mass was allowed to swing to the other side after a few dots were stroke on the same place of the ticker-tape.9. The ticker-tape timer was switched off when the 0.5 kg ringed mass began to swing back to the equilibrium position.10. Step (3) to step(7) were repeated until 5 more ticker-tapes were got.- Procedures for plotting graphs1. The dots marked on the tape were examined.2. The tape, which the dots were perfectly stroke, was chosen.3. The two most widely spaced dots were marked on the tape. This gives the zero position (equilibrium position) of the pendulum bob.4. Every third dot from the zero position on the tape was marked. The displacement of these points from the zero position was measured and the corresponding time was worked out. Time interval between successful dots = 0.02 second.5. These data was plotted on a displacement-time graph (on Page 3 ).6. The velocity was worked out from the slopes of the curve in the displacement-time graph.The velocity-time graph was plotted (on Page 4 ).7. The acceleration was worked out from the slopes of curve in the velocity-time graph. The corresp onding displacement was found. The displacement-acceleration graph and the acceleration-time graph were plotted (on Page 5 and 6 ).Result:Displaccement x/cm11.610.48.86.54.60-2.9-5.9-8.3-10.2-11.7-12.4Time t/s0.10.20.30.40.50.60.70.80.91.01.11.2Velocity v/ cm/s-1.15-2-2.3-2.6-3.3-3.7-2.8-2.5-2.3-1.45-0.8-0.55Time t/s0.10.20.30.40.50.60.70.80.91.01.11.2Acceleration a/ cm/sà ¯Ã‚ ¿Ã‚ ½-1.55-1.43-1.25-0.95-0.6500.40.81.151.451.651.75Displaccement x/m0.1160.1040.0880.0650.0460-0.029-0.059-0.083-0.102-0.117-0.124Acceleration a/ cm/sà ¯Ã‚ ¿Ã‚ ½-1.55-1.43-1.25-0.95-0.6500.40.81.151.451.651.75Time t/s0.10.20.30.40.50.60.70.80.91.01.11.2Data evaluation:From the displacement-time graph, the curve is a half cycled cosine curve. The curve in the velocity-time graph is a negative, half-cycled sine curve. The curve in the acceleration-time graph is a negative, half-cycled cosine curve. From the acceleration-displacement graph, a straight line was shown, which the acceleration is always in the op posite direction and is directly proportional to the displacement. So we can use the following equation to represent the motion:a = -w à ¯Ã‚ ¿Ã‚ ½ x(where a is the acceleration, w is the angular velocity ( a positive constant ), x is the displacement)The definition of simple harmonic motion (S.H.M.) is:1. the acceleration of a particle is* directed towards a fixed point* directly proportional to its distance from that poing2. the acceleration is always in the opposite direction to the displacementSo, the equation a = -wà ¯Ã‚ ¿Ã‚ ½x proved that the pendulum performed S.H.M.Also, for a S.H.M. the angular velocity (w) is kept constant. Period (T) is equal to 2?/w, so the period is also kept constant and is independent of amplitude and mass of the bob.From the graphs the value of w is more or less the same within the motion.time0.10.20.30.40.50.60.70.80.91.01.11.2w0.0070.010.010.010.020.020.020.020.020.020.010.03As period (T) = 2? / wSo the period is also more or less the same within the motion.DiscussionBackground information of simple harmonic motion.There is a close connection between circular motion and simple harmonic motion. Consider an object experiencing uniform circular motion, such as a mass sitting on the edge of a rotating turntable. This is two-dimensional motion, and the x and y position of the object at any time can be found by applying the equations:The motion is uniform circular motion, meaning that the angular velocity is constant, and the angular displacement is related to the angular velocity by the equation:Plugging this in to the x and y positions makes it clear that these are the equations giving the coordinates of the object at any point in time, assuming the object was at the position x = r on the x-axis at time = 0:How does this relate to simple harmonic motion? An object experiencing simple harmonic motion is traveling in one dimension, and its one-dimensional motion is given by an equation of the formThe amplitude is simply the maximu m displacement of the object from the equilibrium position.So, in other words, the same equation applies to the position of an object experiencing simple harmonic motion and one dimension of the position of an object experiencing uniform circular motion. Note that the In the SHM displacement equation is known as the angular frequency. It is related to the frequency (f) of the motion, and inversely related to the period (T):The frequency is how many oscillations there are per second, having units of hertz (Hz); the period is how long it takes to make one oscillation.Velocity in SHMIn simple harmonic motion, the velocity constantly changes, oscillating just as the displacement does. When the displacement is maximum, however, the velocity is zero; when the displacement is zero, the velocity is maximum. It turns out that the velocity is given by:Acceleration in SHMThe acceleration also oscillates in simple harmonic motion. If you consider a mass on a spring, when the displacement is zer o the acceleration is also zero, because the spring applies no force. When the displacement is maximum, the acceleration is maximum, because the spring applies maximum force; the force applied by the spring is in the opposite direction as the displacement. The acceleration is given by:Note that the equation for acceleration is similar to the equation for displacement. The acceleration can in fact be written as:All of the equations above, for displacement, velocity, and acceleration as a function of time, apply to any system undergoing simple harmonic motion. What distinguishes one system from another is what determines the frequency of the motionWe choose a 1.5 m long string and the amplitude to be 13 cm because we need to ensure the swing angle is less than 5 à ¯Ã‚ ¿Ã‚ ½. The restoring force F = ma = mgsin?, which always tends to bring the object back to the original (zero) position.For very small ?,?S.H.M.After studying the x-t, v-t, x-a and a-t graphs , I know more about the ph ase angle. The following figure shows three instant in the motion of a pendulum.At H, the acceleration a is maximum and positive. A quarter cycle later, at O, the velocity v is maximum and positive. Another quarter cycle later, the position x is maximum and positive at K. One cycle corresponds to an increase of 2? or 360à ¯Ã‚ ¿Ã‚ ½ for à ¯Ã‚ ¿Ã‚ ½. So a quarter cycle corresponds to 1/2 ? or 90à ¯Ã‚ ¿Ã‚ ½. Thus,- the acceleration leads the velocity by 1/2 ?- the velocity leads the position by 1/2 ?Conversely, the velocity lags the acceleration by 1/2 ?, and the position lags the velocity by 1/2 ?. The acceleration and position are out of phase by ?, i.e. they are in antiphase. These differnences in the value of à ¯Ã‚ ¿Ã‚ ½ are called phase difference.The velocity and acceleration of the bob, just like the displacement, can be described by rotating vectors of magnitude wA and wà ¯Ã‚ ¿Ã‚ ½A respectively. The relative phase relations, i.e. a leads v by 1/2? and v leads x by 1/2?, a re obvious from such a figure.At H At O At KThe new equations for displacement, velocity and acceleration are as follows:x = Acosà ¯Ã‚ ¿Ã‚ ½v = -wAsin(à ¯Ã‚ ¿Ã‚ ½ + 1/2 ? )a = -wà ¯Ã‚ ¿Ã‚ ½Acos(à ¯Ã‚ ¿Ã‚ ½ + ? )As a = -(g/l)xwà ¯Ã‚ ¿Ã‚ ½ = g/lw = (g/l)1/2T = 2? /wPeriod is not only dependent on the swing angle, but also the length of string, while the amplitude and mass do not affect the period. So it is isochronous.Error AnalysisIn this experiment, the errors mainly come from frictions, with air and within the string, as well as the friction between the ticker-tape and the chair. They act as a damping force and slow down the motion. So energy is lost continuously to overcome the fictions. This damping force is directly proportional but in opposite direction to the velocity of the bob. The damping force is equal to -bv where b is a positive constant and v is the velocity of the bob. Now the restoring force is no long equal to mgsinà ¯Ã‚ ¿Ã‚ ½. The new equation of restoring is ma = mgsinà ¯Ã‚ ¿Ã‚ ½ bv. The expression a = -(g/l)x is no longer be obtained. So the motion is not simple harmonic one anymore.The swing angle is difficult to keep under 5 à ¯Ã‚ ¿Ã‚ ½. So if an angle larger then 5 à ¯Ã‚ ¿Ã‚ ½ is used, the equationscannot be held and so the motion is not a simple harmonic one.When leave the ringed mass and let it to swing, we may give an external force to it. Also the mass oscillates horizontally during the swinging motion. These may affect the swing angle and the velocity of the bob and this explained why the dots on the v-t graph cannot connect together to form a smooth curve.Another big problem is to measure the slopes of the curves accurately. This explains why the dots in v-t, x-a and a-t graphs cannot connect together to form smooth curves and straight line.Improvements1. Hold the mass stationary for a while before leaving it. Try not to exert any force to the mass.2. Twist the clamp as tight as possible so the whole system will not vibrat e or oscillate.3. Set the ticker-tape timer at a place which cannot touch the chair, while keeping on the same horizontal plane with the mass.4. use a plane mirror to get the normal of the dots and then calculate the slopes of the dots.ConclusionsSimple pendulum is a kind of simple harmonic oscillator. The experimental results satisfied the equation for simple harmonic motion ( a = wx)