Applications of Uniform Circular Motion free essay sample

In 1851, a French physicist named Jean-Bernard-Leon Foucault suspended an iron ball with a radius of approximately 0. 5 feet from the ceiling of the Pantheon in Paris with a wire that was over 200 feet long. The ball was used as a pendulum, and it could swing more than 12 feet back and forth. Beneath the ball he placed a circular ring with sand on top of it. Attached to the bottom of the ball was a pin, which scraped away the sand in its path each time the ball went by. To get the ball started on a perfect plane, the ball was held to the side by a cord until it was motionless. At that point, the cord was burned, which started the ball swinging. As the ball continued to swing as a pendulum, the path the pin carved into the sand changed, as the floor itself, as well as the rest of the Earth, was moving beneath it. We will write a custom essay sample on Applications of Uniform Circular Motion or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Essentially, the Foucault pendulum demonstrates the rotation of the Earth. The Foucault pendulum is not forced to stay in a fixed plane like Newton’s pendulum, also known as Newton’s cradle, which means it can move freely in response to the Coriolis force. The Coriolis force, also known as the Coriolis effect, occurs when masses above the Earth’s surface, such as a bullet or rocket, appear to be deflected from their trajectory, meaning they don’t reach their intended location straight ahead of them. In fact it is our frame of reference, the Earth, which is changing. Our frame of reference changes due to our uniform circular motion around the Earth. As the Earth is not a perfect circle (elliptical), the closer to the equator you are, the further away you are from the Earth’s centre and the less force of gravity you experience. The Earth’s radius is 6378 km. As a result of your increased distance from the centre of the Earth at the maximum point at the Earth’s radius on the equator, you have a lower centripetal force at that location. This is shown by the formula for centripetal acceleration, which is: pic] Where centripetal acceleration (m/s2) is equal to the velocity (m/s) squared divided by the radius (m). As the formula shows, as the radius between you and the centre of the Earth increases, your centripetal acceleration decreases. At the equator, your centripetal acceleration is around 0. 03 m/s2 . Therefore, Foucault’s pendulum in Paris has a higher centripetal acceleration than 0. 03 m/s2, as it is located closer to the poles than the equator.

Essentials of Computer Organization and Architecture †Free Samples

Question: Discuss about the Essentials of Computer Organization and Architecture. Answer: Introduction Cloud-based storage can be defined as the specific model of storing data where the digital data gets stored. The hosting company is responsible for managing and controlling this cloud based storage (Laan 2017). Each and every provider of the cloud based storage helps to maintain the accessibility and availability of the data. The physical environment is extremely protected with this cloud storage. These types of storage providers manage the data on storage servers. Virtualization techniques are responsible for building all the storage servers of cloud storage. The following report demonstrates a brief overview on the concept of cloud based storages. The report provides the background of the topic by describing the history of the topic. The methodology and the research details are also described here. The advantages and disadvantages of cloud based storage are also given here. A conclusion will be drawn on the findings. In the year 1960, Joseph Carl Robnett Licklider invented cloud computing by while working with ARPANET. He wanted a connection between data and people from anywhere and at any time. In the year 1983, CompuServe offered all of its users with a smaller disk space for storing all types of files that are to be uploaded (Lee 2014). In the year 1994, the first storage was launched and it was completely web based. In the year 2006, Amazon Web Services or AWS first invented the cloud storage, namely AWS S3. It was instantly recognized by everyone worldwide. The best examples of cloud based storages in todays world are Google Drive, iCloud, Google Docs, XDrive and many more. Cloud based storage comprises of various significant advantages and disadvantages (Null and Labor 2014). These advantages or benefits of cloud storage has made the storage extremely popular and accepted by all. However, there are some of the major disadvantages as well. These disadvantages can be dangerous for any enterprise or company. Methodology is the theoretical or systematic analysis of any method that is used to execute a specific action or activity. This report is done with the help of qualitative research methodology. Several journal papers, books, conference papers and various peer reviewed articles were reviewed while making the report. Amongst them, twelve articles were selected and the report is made on them. These articles are being used to define the topic of cloud storage and its advantages and disadvantages. Issues, Various Points of View According to Stefanov and Shi 2013, cloud storage is extremely necessary and secured to give high performance in data storage. It helps to maintain the security and privacy of the data and thus can be termed as secured. As per Lee 2014, cloud networking is the most important architecture for the cloud based networks. Rountree and Castrillo 2013 have discussed about the various advantages and disadvantages of cloud based storage in their paper. They have mentioned about the importance of cloud storage for any storing any data. As per Laan 2017, the infrastructure architecture is vital and thus should be maintained properly. The cloud architecture includes IaaS, PaaS and SaaS. Each and every cloud architecture has its own advantages and disadvantages. Cloud based storage is one of the most important and significant storages of data that is utilized by the cloud providers to properly maintain, control, manage and backing up of data (Kurose and Ross 2016). This particular service allows all of its users in storing as well as utilizing the files online, so that these data could be easily accessed from any part of the world with the help of the Internet. It has been observed that over 800 decision makers in business have been benefitted from cloud storage and they have gained competitive advantages through this. The most significant advantages of this cloud based storage are as follows: Usability: The very first benefit of any specific cloud storage is its usability. This type of service can be easily utilized and accessed from anywhere and on any operating system. This particular feature makes the cloud based storage extremely popular and accepted by all. However, this usability of the cloud storage is restricted to authenticated users only ad thus it is extremely safe and secured. Cost Effectiveness: This is the second most important advantage of cloud based storage. There are several cloud based storages available in the market and most of them are extremely cheaper in comparison to other data storages. The cost effectiveness of the cloud based storages helps them to gain popularity (Rountree and Castrillo 2013). Moreover, all the organizations that are utilizing the cloud storage get benefit from it as it helps in the reduction of annual operation costs and this cost around 3 percent gigabytes in storing the entire internally. The users would be able to get the additional cost savings since it does not require any type of internal power for the purpose of storing the information remotely. Disaster Recovery: The third important advantage of the cloud storage is the disaster recovery. The organizations or the companies that do not have the emergency back up plans; cloud storage would be the best answer to all of them. The cloud storage is responsible for all types of emergency back ups in case of any data breaching or data lost. These cloud storages act as secondary copy of all kinds of important files that has the highest tendency to be breached or hacked by the hackers or intruders (White 2015). Cloud storage helps these organizations by storing the confidential files in a specific remote location that could only be accessed by the Internet. The hackers do not get any hold of this location and thus the data is extremely safe and secured. Moreover, due to the remote location, and access from only the Internet, the disaster is very less and even if disaster occurs, it can be easily recovered without any complexities. Accessibility: The fourth important advantage of any particular cloud storage is its accessibility. The files that are being stored within the cloud based storage can be easily accessible from any part of the cloud. Moreover, this hassle free accessibility has helped the cloud storage to become extremely popular and acceptable by all its users (Stallings and Case 2013). Any particular user, who are accessing through the Internet, can access the data that has been stored in the cloud storage. These above mentioned advantages or benefits help the cloud based storage to be excessively advantageous and important for the users of cloud computing. Although, cloud based storage comprises of various important advantages, there are some of the major disadvantages embedded within the system as well. The most significant disadvantages or demerits of any cloud based storage are as follows: i) Security: This is the most significant disadvantage of cloud storage. In spite of providing various advantages of data storage, the security of this particular storage is threatening (Laan 2013). It has a disaster recovery embedded within it, however, the security system is not at all up graded and thus there is always a high chance of data losses in any cloud storage. Various security measures are adopted for mitigating the security risks or threats but still the threats in the data recovery is not removed completely. ii) Moving of Documents: Two types of operations are used in cloud storage while moving any document from one location to another. The two operations are the dragging and dropping of files. If not done carefully, the movement of data can be permanent and thus the data would be stored win the cloud storage forever (Pfleeger and Pfleeger 2015). There should be a second copy of data while it is being stored within the storage. Bandwidth: The third disadvantage of the cloud storage is that various such services have particular allowance of bandwidth. If any user crosses that allowance, additional charges are to be incurred. The companies often give a second thought while using any cloud storage. Software: The fourth disadvantage of cloud storage is that all the services and software are to be downloaded in each and every device (Santana 2013). From the above report, it has been found that cloud based storage is very important and significant storage of any data through the Internet. The providers of cloud computing help the users to store their data effectively and efficiently. It is an online storage that comprises of several significant advantages like usability, cost effectiveness, accessibility and disaster recovery (Burd 2016). However, few disadvantages are also present within the storage like the bandwidth is restricted, the requirement of down loading software, the lack of security and the problem in moving any documents. The journal papers and articles have helped to understand the entire concept perfectly. Conclusion Therefore, form the above discussion it can be concluded that cloud computing is the practice of transferring any data or confidential information through the Internet. It is a paradigm of information technology, which helps to enable the ubiquitous access to all types of shared pool of system resources. These could be rapidly provisioned by lesser management effort on the Internet. Cloud storage is the storage of cloud computing that is utilized for storing data or any confidential information with extreme security and safety. There are several kinds of cloud based storages available in the market. The above report has outlined a brief discussion on the cloud storage and various advantages and disadvantages. This report has provided the proper analysis of the methodology, research details and issues of cloud storage. Furthermore, the findings are also mentioned in the report. References Burd, S., 2016. Systems architecture. 7th edn, Course Technology, Boston, MA. Kurose, J.F., and Ross, K.W., 2016. Computer Networking: A Top-Down Approach.7th edn, Addison Wesley, New Jersey. Laan, S., 2013.IT Infrastructure Architecture-Infrastructure Building Blocks and Concepts Second Edition. Lulu. press. Laan, S., 2017.IT Infrastructure Architecture-Infrastructure Building Blocks and Concepts Third Edition. Lulu. com. Lee, G., 2014.Cloud networking: understanding cloud-based data center networks. Morgan Kaufmann. Null, L., and Labor, J., 2014. The essentials of computer organization and architecture. 4th edn, Jones Bartlett Publishers, Sudbury, MA. Pfleeger, C., and Pfleeger, S., 2015. Security in Computing. 5th edn, Prentice Hall, New Jersey. Rountree, D. and Castrillo, I., 2013.The basics of cloud computing: Understanding the fundamentals of cloud computing in theory and practice. Newnes. Santana, G.A., 2013.Data center virtualization fundamentals: understanding techniques and designs for highly efficient data centers with Cisco Nexus, UCS, MDS, and beyond. Cisco Press. Stallings, W., and Case, T., 2013. Business data communications: Infrastructure, networking and security, 7th edn, Pearson, Boston. Stefanov, E. and Shi, E., 2013, May. Oblivistore: High performance oblivious cloud storage. InSecurity and Privacy (SP), 2013 IEEE Symposium on(pp. 253-267). IEEE. White, C., 2015.Data communications and computer networks: a business user's approach. Cengage Learning.

The title was taken from an ode by Horace Essay Example For Students

The title was taken from an ode by Horace Essay The poem Dulce et decorum est pro patria mori is the name of a poem written my Wilfred Owen, a wartime Poet. The title was taken from an ode by Horace. The title literally means It is sweet and right to die for your country. It was written specifically to stress the fact that the governments Propaganda was a lie, The Old Lie as it states in the final stanza of the poem. Propaganda is a word generally used in a war, meaning advertising, promoting and spreading information towards the public. They were generally based around that if you join up, you would get the women! The government wanted, young, fit and red-blooded men to enlist, to fight and die for their country. Thousands of patriotic men enlisted. We will write a custom essay on The title was taken from an ode by Horace specifically for you for only $16.38 $13.9/page Order now Wilfred Owen described the conditions endured by the men in the first stanza in more of a physical manner, emphasizing the mens appearance, positions and actions. From reading this stanza, I can identify that the men were clearly pushed to their physical limits, for example, drunk with fatigue or men marched asleep both suggest how extremely exhausted they were. Special camps were used in the war; a phrase that suggests this is and towards our distant rest began to trudge. As the men slowed down with physical and mental drainage, their distant rest seems prolonged. A very serious and saddening mood is used in the poem. If spokes, one would use a very somber and depressing voice. A good example where this could be used is but limped on, blood-shod a metaphor is used here, as well as throughout the first stanza. A metaphor is a word meaning to say something IS something, but it isnt. The men were not really walking with shoes of blood, which is almost physically impossible. In my opinion, Wilfred Owen has used lots of these metaphors so the reader can build up characteristics and a mental image of the poem. The pace of the poem changes in the second stanza, which changes the amount of syllables per word, per line. An example of this is Gas! Gas! Quick boys This sentence only has four syllables, opposed to a line in the first stanza towards our distant rest began to trudge has ten syllables so it is longer to say and takes more time. The first stanza is slow and progressive, with no tension at all, but the tension is quickly built in the first sentence of the second stanza, which I find, raises ones attention once again. With this strategy, there is no boredom. Also, the attitude of the men changes. In the first stanza, the men can only trudge with fatigue, but in the second, they were rapidly fighting for their lives. The third stanza differs from the previous two stanzas as it is written in the present tense. The stanza may be written in the present tense to emphasize the fact that Wilfred Owen suffered reoccurring dreams of the same man on that day; In all my dreams suggests that they are reoccurring. Wilfred Owen uses five very descriptive words to known as adjectives. They are In all my dreams before my HELPLESS sight, he PLUNGES at me, GUTTERING, CHOKING, DROWNING these words are strong and meaningful; they make me think, which in turn, also creates a mental image. This helps me to understand the poem more. I think that Wilfred Owen might of set out the third stanza on its own to make it stand out, to emphasize how haunting the memories of the man floundering towards him was, to an extent that every night, he suffered a reoccurring dream. Also, Wilfred Owen has also set out the third stanza on its own so the reader can focus purely on that one piece, which means that the reader can think more of it, the emotion, meanings and their opinions, without the distractions of different sentences you would find in a much longer stanza, e.g. stanza one or two.

Production-Possibility Frontier Essays

Production-Possibility Frontier Essays Production-Possibility Frontier Paper Production-Possibility Frontier Paper Production-possibility frontier In economics, a production-possibility frontier (PPF) or â€Å"transformation curve† is a graph that shows the different quantities of two goods that an economy (or agent) could efficiently produce with limited productive resources. Points along the curve describe the trade-off between the two goods, that is, the opportunity cost. Opportunity cost here measures how much an additional unit of one good costs in units forgone of the other good. The curve illustrates that increasing production of one good reduces maximum production of the other good as resources are transferred away from the other good. edit] Productive efficiency, opportunity cost, and allocative efficiency The production possibilities curve shows the maximum feasible (obtainable) amount of one commodity for any given amount of another commodity, as of the societys technology and the amount of factors of production available. The concept is used to show the options open to a firm, individual, household, or economy for a 2-good world. In microeconomics, the 2-good case readily generalizes to the n-good case. In macroeconomics, it illustrates the production possibilities available to a nation or economy (corresponding roughly to macroeconomic notions of potential output at a given point on the curve) for broad categories of output. All points on a production possibilities curve are points of maximum productive efficiency or minimum productive inefficiency: allocated such that it is impossible to increase the output of one commodity without reducing the output of the other. That is, there must be a sacrifice, an opportunity cost (given by the slope of the curve in absolute value), for increasing the production of a good by one unit. Conversely, points inside the frontier are feasible but productively inefficient. Point A in the diagram for example, shows that FA of food and CA of computers can be produced when production is run efficiently. So can FB of food and CB of computers (point B). For a firm, a point on the curve is productively efficient but, given market demand, could be less profitable than another point on the curve. Equilibrium for the firm with given resources is at the most profitable and productively efficient point on the PPF. There is a parallel for an economy as well. It may have productive efficiency but not allocative efficiency. Markets and other institutions of social decision-making (such as government, tradition, and community democracy) may lead to the wrong combination of goods being produced (and the wrong mix of resources allocated) compared to what individuals would prefer, given what is feasible on the PPF. All points to the right of (or above) the curve are infeasible for given resources. A move from point A to point B indicates an increase in the number of computers produced. But it also implies a decrease in the amount of Food produced. This decrease is the opportunity cost of producing more computers. As mentioned, the two main determinants of the curve are production functions (reflecting the available technology) and available factor endowments. If the technology improves or the supplies of factors of production increase, the production possibility frontier shifts to the right (upward), raising the amount of each good that can be produced. A military or ecological disaster might move the PPF inward and to the left. In neoclassical economics, production possibility frontiers can easily be constructed from the contract curves in Edgeworth box diagrams of factor intensity. In other interpretations (often seen in textbooks), the concave production-possibiliity frontier reflects the specialized nature of the heterogeneous resources that any society uses: the opportunity cost of shifting production from one mix to another (e. g. , from point A to point B) reflects the costs of using resources that are not well-specialized for the production of the good which is being produced in greater quantity. The line curve in Figure is not straight but is concave to the origin (that is, curved inward toward the axes). This can represent an assumed disparity in the factor intensities and technologies of the two sectors. That is, as we specialize more and more into one product, the opportunity costs of producing that product increase, because we are using more and more resources that are poorly suited to produce it. With increasing production of computers, workers from the food industry will move to it. At first, the least qualified (or most general) food workers will help start making computers. The move of these workers has little impact on the opportunity cost of increasing computer production: the loss in food production will be small. This cost of successive units will increase as more of specialised food manufacturers are attracted. For example, in the second diagram, the decision to increase the production of computers from 5 to 6 (from point Q to point R) requires a minimum loss of food output. However, the decision to add a tenth computer (from point T to point V) has a much more substantial opportunity cost. The the neoclassical interpretation, if the factor intensity ratios in the two sectors were constant at all points on the production possibilities curve, the curve would be linear and the opportunity cost would remain the same, no matter what mix of outputs were produced. In other interpretations, a straight-line production-possibiliity frontier reflects a situation where resources are not specialized and can be substituted for each other with no cost. Products requiring similar resources (bread and pastry, for instance) will have a nearly straight PPF, hence constant opportunity costs (when increasing production rates). [edit] The marginal rate of transformation The slope of the production-possibility frontier (PPF) at any given point is called the marginal rate of transformation (MRT). It describes numerically the rate at which one good can be transformed into the other. It is also called the (marginal) opportunity cost† of a commodity, that is, it is the opportunity cost of X in terms of Y at the margin. It measures how much of good Y is given up for one more unit of good X or vice versa. The shape of PPF is commonly drawn as concave downward to represent increasing opportunity cost with increased output of a good. Thus, MRT increases in absolute size as one moves from the top left of the PPF to the bottom right of the PPF. Marginal Rate of Transformation If, for example, the (absolute) slope at point BB in the diagram is equal to 2, then, in order to produce one more computer, 2 units of food production must be sacrificed. If at AA for example, the marginal opportunity cost of computers in terms of food is equal to 0. 25, then, the sacrifice of one unit of food could produce 4 computers. The marginal rate of transformation can be expressed in terms of either commodity. The marginal opportunity costs of computers in terms of food is simply the reciprocal of the marginal opportunity cost of food in terms of computers.

Explain why and how the morgan report has led to a substantial change Essay

Explain why and how the morgan report has led to a substantial change in crime reduction initiatives in the uk - Essay Example Four distinctive areas will be referenced as examples of their implementation in principles laid down by the Morgan Report. This Report has influenced subsequent legislation such as the Crime and Disorders Act of 1998 which has impacted substantially the very philosophy of crime reduction. This Act, a descendent of the Morgan Report, will also be reviewed. There were 181 police forces in Britain, operating mostly independently of each other, at the beginning of the twentieth century. These small enforcement groups had limited collaboration or communications between them. 43 police forces function within England and Wales today supplied with many more police officers. Interactivity between these units has increased significantly over the years with the advent of new technologies and the need to slow criminal activity, not just in a region but nation-wide. Despite new technologies that aided police in performing their duties more competently, crime continued to become increasingly prevalent after 1960, which predictably led to public condemnation of the police. It had become apparent that traditional policing methods would not prevent or reduce crime on their own. Police organisations began seeking the involvement the community. This move was a change from a predominately reactive style of enforcement. â€Å"In the early 1980s, alongside changes in policing, the government of the day put crime prevention firmly on the agenda with a number of circulars proposing coordinated approaches to crime prevention, involving many organisations working together† (â€Å"What is Crime Reduction† 2006). In 1984, an inter-departmental circular suggested the establishment of local multi-group assemblies to undertake crime issues. Historic milestones involving recent expansive techniques of crime prevention and community safety can be traced to this circular, which

Research Critique - Dapagliflozin Trials Paper Example | Topics and Well Written Essays - 1000 words

Critique - Dapagliflozin Trials - Research Paper Example This paper reviews various aspects of a medical trial study carried out in Japan. The critique evaluates issues of human protection, data collection, analyses and management as well as the final findings. The study by Boulton et al. (2011) highlights the comparative use of dapagliflozin on two treatment groups consisting of diabetics with type II diabetes (T2DM) and healthy subjects. The research paper was published in the fourth issue of the Diabetes, Obesity and Metabolism Journal in 2011. The main objective of the research was to investigate the tolerability and safety of dapagliflozin in the Japanese participants. Evaluated aspects included the pharmacodynamics (PD) and pharmacokinetics (PK) of the drug on both treatment groups. Protection of Human Participants The implicitly implied benefits of this research included the ability to determine the tolerability and safety of the drug for Japanese subjects, and thus offer a reliable, non-insulin dependent therapeutic option for T2DM management. This would be beneficial because it would save patients with T2DM from regular insulin injections and costs if it would be established as an efficient mono-therapy option or improving add-on to other diabetic therapies. The authors of the research recognized drug allergy as a potential risk and possible aggravation of cardiovascular and diabetic ketoacidocis. As such, precautionary measures were taken to exclude subjects with such conditions or a history of such conditions. In addition to the highlighted benefits, the researchers failed to note that dapagliflozin’s effectiveness does not depend on the dysfunction severity of beta cells. Unlike most other therapies, its effectiveness will not decrease with beta cell failure advancement or with higher severity of insulin resistance. This would be a major benefit in the T2DM therapy. Additionally, they also failed to identify other risks such as possible aggravation of polyuria, which may results from the diuretic e ffect of dapagliflozin. The research was conducted after acquisition of informed consent from subjects as stated within the material and methods section, and as such it is expected that all participants consented to participation after full information. The research process and procedures adhered to GCP (â€Å"Good Clinical Practice†), and â€Å"Japanese Pharmaceutical Affairs Law† both of which define standards of clinical pharmaceutical trials (Boulton et al. 2011). The adherence to these standards as asserted within the paper implies that indeed the participants must have voluntarily accepted participation in the study. This is because voluntary participation is one of the stipulations under these standards, and adherence confirms willing participation. As part of ensuring adherence the researchers also sought approval from the local ethics committee/ IRB (â€Å"Institutional Review Board†). From these facts it can be inferred that ethical, procedural adheren ce was upheld as required in any drug trial cases. Data Collection Data collection in the study was done through the bio-analytical

The Human Genome Assignment Example | Topics and Well Written Essays - 250 words

The Human Genome - Assignment Example Other countries and their respective genome research departments involved in the project include The Australian Genome Research Facility, Beijing Genomics Institute, Japan Science and Technology Corporation Sequencing Projects, and other companies located in France, Germany, and other countries sich as Mexico, Spain, and others across the globe. Through this international collaboration the following milestones were achieved by the project in record time ( 2008): Although various scientific fields tended to benefit from the results of the research there were still ethical and legal concerns among various sectors due to societal concerns such as the â€Å"fairness in use of genetic information, privacy and confidentiality of genetic information, Psychological impact and stigmatization due to an individuals genetic differences, including reproductive and clinical issues (2011) as well. The Human Genome Project does not end with the results of the DNA Sequencing. Thanks to the results of their experiments and discoveries, we now have an updated periodic table of elements and an unprecendented increase in medical breakthroughs related to unlocking the connection between the human DNA sequence and illnesses / viruses. It is expected that these research projects and medical developments will continue well into the future and result in a longer life span for human beings regardless of age and