Computers In Medical Field Essay -- Information Technology Essays

Introduction Today, in the United States, we all live in an age of technology and science. The use of technology and science has revolutionized our way of life. There are few things in history that have influenced our lives more than a computer. Today, there cannot be any field that is absent of the influence of computer applications. From farming to rocket science, computers have a huge role to play. The use of the computer has been on the increase for some time in many fields. Medicine is one of the many fields that have made tremendous strides in the twentieth century due to the advent of computers. Computers are used in medicine in almost all areas. Whether it is data management, diagnosis, or treatment, computers have there own applications. Everything we know today in medicine might not have been possible without the valuable contribution of computers. The Role of Computers in Storing Information Computers have been used as storage devices for medical information for many years. Computer-based patient records are good examples to prove the worth of computers as information storage. Due to startup and running costs, possibility for abuse, poor functioning, and the risk of loss of confidentiality, they were not used very much in the past. Now, they have become almost indispensable. Computer-based patient records have many advantages. They "have the potential to improve legibility, accessability, structure..."(Medical Informantics) the possibility of integration with telemedicine, and increased ability to collect health information. Computers are used for scheduling and appointment keeping. They are used to keep track of patients' visits. With the help of word processors, letters are typed and sent to... ...rt of medicine. Neither can they eliminate the need of human beings. What they can do is help us bring relevant and timely information to use on our care of individual patients. They can also help run the medical offices or hospitals in a way that makes good business sense. That is why many physicians have embraced the computer and made information technology an integral part of their approach to patient care. That is why they have been able to meet the increasing needs of the patents remarkably well. http://www.medicinenet.com/cat_scan/article.htm http://trc.telemed.org/telemedicine/primer.asp http://www.vet.uga.edu/mis/what.php http://www.mieur.nl/mihandbook/r_3_3/handbook/home.htm http://www.mieur.nl/mihandbook/r_3_3/handbook/home.htm (Much info I got was from this) If I forget we may want to think about getting rid of Advantages/Disadvantages sections

Grade 12 Chemistry Notes – History and Development

3. 1 & 3. 2 Chemistry Notes Dalton * In 1805, John Dalton reintroduced the idea to explain 3 fundamental principles Experimental Work * Atoms of different elements have different properties * Law of definite proportion and multiple compositions: atoms of 2 or more elements can combine in a fixed ratio to form new substances depending on their combining capacities (eg. H2O vs H2O2) * Law of conservation of mass: atoms cannot be created or destroyed during a chemical reaction Conclusions * All matter is composed of atoms Atoms are the smallest pieces of matter and cannot be broken down further * All atoms of one element have identical properties Problem * Development of a cathode ray tube (by William Crookes) Thompson (1897) Experimental Work * Used a cathode ray tube a vacuum tube with electrodes at both ends * Found that there were charged particles that were travelling from one end of the tube to the other (from negative end to positive end) Conclusion * Proposed that an atom was a positively charged empty sphere containing negatively charged electrons raisin scone analogy What Thompson left us with? Atoms consist of negative electrons embedded within a positively charged sphere * Analogy of raisin bun often used Milikin’s Famous Oil Drop Experiment * Determined size and charge on electron * Discovered charge on single electron was 1. 6 x 10^19 C How it worked? * Knew mass of single drop of oil, calculated gravity on one drop * Charge was applied to falling drops by illuminating bottom chamber with x-rays, exciting electrons, causing them to attach to oil. * Using a battery, electric voltage was applied to the plates.When just right, the electromagnetic force would balance out the force of gravity, suspending particles in midair. * Noticed charge was always multiples of 1. 6 x 10^19 * Q= mg/E Gold Foil Experiment * Radioactive particles (alpha radiation) were fired at thin gold sheets * Screens coated with zinc sulfide detected the presence of the alpha radiation * Vast majority of alpha particles passed straight through gold sheet, however, approximately 1 in 8000 particles were deflected Chadwick and the Neutron When calculating the mass of specific nuclei, the calculated mass did not correlate with the associated charge of the nucleus * Chadwick proposed that neutral particles must be present to make up for the missing mass * Chadwick proposed a positive nucleus containing neutral particles Isotopes * Mass spectrometers were used to discover that all atoms of the same element were not the same * Elements contained several different forms of isotopes (atoms with the same number of protons, but different numbers of neutrons) Problem with the Rutherford Model Physics – bodies are accelerating when they change speed and/or direction * And electron travelling in a circular orbit is constantly changing its direction and therefore accelerating * This acceleration would result in the electrons emitting electromagnetic radiation, lose electrons, and collapsing the atom as it continuously spirals inward because it is losing electrons Enter Max Plank * Her was studying the emission of light from hot objects * What is visible light? When objects are heated, they emit various colors of light depending on how hot the object is * Ex. â€Å"white hot† objects are emitting the whole range of the visible spectrum * â€Å"red hot† objects emit light with wavelength of the infrared – longest wavelength * â€Å"blue hot† objects are the hottest as they emit light of shortest wavelength * Hot objects emit radiation. The hotter they are, the more energetic the radiation emitted is. The electromagnetic radiation changes as the object gets hotter. * The color of light emitted reveals temperature Explaining Intensity vs.Energy – The staircase which changed physics * Planck suggested that energies of the vibrating atoms in the heated solid were multiples of small quantities of energy (energ y was not continuous) * Introduced the term â€Å"quantum† * The slope is actually more like a staircase * Each step represents a ‘quanta’ of energy * A quanta is derived from quantity and refers to the smallest possible unit of energy that can be associated with a specific sub-microscopic even * An atom has to absorb or release an entire package (quanta) of energy or none at all.There is no ‘in between’ Heinrich Hertz: the photoelectric effect * Photoelectric effect when light is shone on a metal surface, electrons are released from the surface of the metal. The number of electrons released per second can be measured by a connected ammeter * Frequency is different from intensity. Electrons will only jump off if the frequency is right, however, how many electrons jump off will depend on the intensity of the light. How fast they jump off will also increase with higher frequency * The amount of energy in a light wave is proportionally related to its fr equency.High frequency light has high energy, low frequency light has low energy (violet has the most energy and red has the least) Einstein puts 2 and 2 together * In 1905, Einstein received the Nobel Prize for applying Planck’s idea to the photoelectric effect * When light strikes metal, some of the energy is used to allow the electron to break free from the metal, the rest of the energy is left over as the kinetic energy of the ejected electron * If one electron absorbs one photon (quanta of energy), it must be great enough or the electron to be able to escape * No electrons escape at low photon energies because the energy of the single photon was insufficient for the electron to escape the metal Energy of Quanta of Energy – Photons * E = h x f, where E is the amount of energy in joules (J), h is Planck’s constant 6. 6 x 10^-34, and f is the frequency in hertz * A photon is a packet of energy, with energy values corresponding to the frequency of the electroma gnetic wave Einstein’s Proposals Light is quantized like a particle (photon) * Light exist as bundles of photons, with each photon independent of each other * This means that light has certain particle properties as well * The energy of a photon is proportional to its frequency and nothing else. * Therefore, a phonon is a small packet of energy corresponding to a specific frequency of light (E=hf) Spectroscopy The spectroscope was invented by Robert Bunsen and Gustav Kirchhoff in the 1850s to study light * When white light passes through spectroscope (containing a prism or diffraction grating), the light is divided into a continuous rainbow of colors (continuous spectrum) Bunsen and Kirchhoff (1859): invented the spectroscope * When elements were heated in a Bunsen burner flame, each element produced a flam color and a bright line spectrum that was characteristic of the element * Continuous Spectrum – a display of all colors.It comes from the â€Å"dispersion† ( refraction) of white light passing through a prism * Dark Line spectrum (absorption spectrum) – certain colors are missing from a display of colors produced by white light passing through a gas and then through a prism. These missing lines enable scientists to identify the gas that the light passed through * Bright line spectrum (emission spectrum) – when a gas is â€Å"energized† by electricity or heat or light, the gas emits light of a specific color (not white light). When this light is passed through a prism it is refracted into a pattern of a few bright lines of color.Each substance has a unique, bright line â€Å"signature†. This pattern of colored lines represents the same pattern of dark lines of missing color in the dark line spectrum] Bohr’s theory was needed to explain the bright/dark spectrum and Einstein’s photons 1. Electrons travel in an atom in circular orbits. Each orbit represents a specific energy level. All electrons in o ne orbit/energy level will have the same amount of energy, which is quantized (discrete packet) 2. There is maximum number of electrons allowed in each orbit 3. When electrons absorb a photon of light, they jump from a lower energy level to a higer energy level.This absorption of a photon of light energy results in a dark line in the absorption spectrum 4. When electrons jump from a higher energy level to a lower energy level, energy is released as a photon of light. This release of photon from the atom results in the bright line in the emission spectrum 5. When electrons are at the lowest energy level, they are in â€Å"ground state† How does Bohr’s Energy levels of electrons relate to the periodic table? * Each period represents one energy level – Period 1 1 Energy level, Period 2 2 energy levels, etc. There is a maximum number of electrons in each lever (level 1 2 electrons, level 2 8 electrons, level 3 8 electrons) Power Point 2 Problems with Planetary Model * If electrons were accelerating, photons of electromagnetic radiation should be emitted * Obviously this is not the case * The Rutherford planetary model is insufficient as a model to explain matter Quantum Theory * All electrons in all atoms can be described by 4 unique quantum numbers * Quantum numbers are used to describe the approximate location and characteristics of electrons surrounding an atom based on the energy levels of an atom * There are 4 quantum numbers Principle quantum number (n) * Designates main E level of electron * Secondary quantum number (l) * Describes E sublevels of electrons * Magnetic Quantum Number (ml) * Relates to direction of electron orbit * Spin Quantum number (ms) * Relates to the spin of an electron Principle Quantum Number (n) * n=1, 2, 3, 4 etc. * n=1 means Energy level 1 and so on Secondary Quantum number, l * (l) describes shapes of sublevels (subshells) of the main energy level * Sommerfeld looked more closely at the H line spectrum. Found t hat main lines of bright line spectrum split into more lines. The number of sublevels equals the value of the principle quantum number * Has integral values from 0 to (n-1) for each value of n * If n=3, then there are three sublevels. L = 0, 1, 2 * Each l number represents a possible shape of the orbital. (hence if l=0, 1, 2, then there are 3 possible shapes) Third Quantum Number: Magnetic Quantum number, ml * describes the orientation of electron orbital in space (therefore orbitals could exist at different angles to each other in 3-d) * For each value of l, ml, can vary from -1 to 1 Shapes of Orbitals ‘s’ (l=0) orbital is spherical, ml = 0 * ‘p’ (l=1) , ml = -1, 0, 1 * ‘d’ (l=2) , ml = -2, -1, 0, 1, 2 * ‘f’ (l=3) orbitals are much more complex, ml = -3, -2, -1, 0, 1, 2, 3 Classification of Energy Subshells * Each distinct sublevel has specific number of orbitals. * Each orbital has a different orientation The spin quantum number, ms * Pauli – each electron spins on its axis in one of 2 ways clockwise or counterclockwise * The spin quantum possesses only two values; either +1/2 (clockwise) or -1/2 (counter-clockwise) New Orbital Way Orbitals are 3 dimensional probability distribution graphs which help chemists visualize where electrons are most likely to be found Electron Orbitals * An electron orbital is described as the region of space where an electron may be found * Orbits are rings surrounding the nucleus, whereas orbitals are probability clouds or clouds of electron density * More than one orbital can be found within an energy level Pauli’s Exclusion Principle * No two electrons in an atom can have the same 4 quantum numbers!

General Certificate of Education Ordinary Level Essay

UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Ordinary Level .c rs om 1123/11 ENGLISH LANGUAGE Paper 1 Writing Additional Materials: * 4 0 7 9 5 7 8 4 2 9 * October/November 2011 1 hour 30 minutes Answer Booklet/Paper READ THESE INSTRUCTIONS FIRST If you have been given an Answer Booklet, follow the instructions on the front cover of the Booklet. Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen. Do not use staples, paper clips, highlighters, glue or correction fluid. Answer both Section One and Section Two. At the end of the examination, fasten all your work securely together. This document consists of 3 printed pages and 1 blank page. DC (CW) 33870/3  © UCLES 2011 [Turn over 2 Section 1: Directed Writing You are advised to write between 200 and 300 words. Total marks for this part: 30. Task Recently you witnessed a major disturbance at a railway station when many people were injured. You are asked by the local police to write an account of what you saw. Write your account. You must include the following: †¢ when and where the incident happened and how close you were to the scene the cause of the disturbance and what exactly happened some of the ways in which people tried to help. †¢ †¢ Cover all three points above in detail. You should make your account informative and helpful for the police to show you are a reliable witness. Start your account ‘To the Police†¦Ã¢â‚¬â„¢ and remember to add your signature and the date.  © UCLES 2011 1123/11/O/N/11 3 Section 2: Creative Writing Begin your answer on a fresh page. Write on one of the following topics. At the head of your essay put the number of the topic you have chosen. You are advised to write between 350 and 500 words. Total marks for this part: 30. 1 Describe a time when you prefer to be alone and a time when you like to be part of a crowd. (Remember that you are describing the atmosphere and your feelings, not telling a story.) 2 What are the advantages and disadvantages of attending either a small school with few students or a large school with many students? 3 Write a story which includes the sentence: ‘As we entered the building, the other people smiled as if they knew something we did not.’ 4 Bullies. 5 Write a story about someone who returned to a village or town after a long time away. (You should include full details of why the person went away to show that it is an important part of your story.)  © UCLES 2011 1123/11/O/N/11 4 BLANK PAGE Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.  © UCLES 2011 1123/11/O/N/11

My philosophy for advanced practice nursing Essay

My philosophy for advanced practice nursing (APN) is an extension of the philosophy of my nursing practice. I plan to form a partnership with my patients in which compassionate, holistic, evidence based care will lead to the patient maintaining optimal health and wellness. Advance Practice Nurses focus entirely on the patient by compassionately addressing every aspect of the patient’s needs. My goal is to educate and encourage the patient to become responsible for his/her health by working diligently with the healthcare team. An APN’s primary focus should be to address and remove the underlying cause of illness rather than to merely alleviate the presenting symptoms. This can be done by addressing underlying issues that can hinder the healing process and establish a plan to remove these obstacles in order to promote holistic healing. I value treating the whole patient (emotional, genetic, environmental, social, physical, spiritual, and other factors) and offering means of wellness in conjunction with traditional options (Nightingale, 1954). Nurse Practitioners provide the patient with a holistic care that includes not only exercise, nutrition, environment, and stressors, but also considers the client’s cultural world view (Dossey, 2010). When this approach is taken, each patient is able to experience an individualized plan of treatment. As I step out of the role of bedside nurse and embrace the role of an APN, I look forward to the additional responsibilities of diagnosing and treating patients which will afford me a greater role in the improvement of my patient’s health. This advanced role in designing and implementing plans of treatment empowers the APN to provide complete patient care. The APN role also allows me the opportunity to educate my patients, their families and the community on measures to improve health and prevent future illnesses. I look forward to advancing as a professional because, as I do so, I can make a difference by implementing and improving patient care and teaching others. References Dossey, B. (2010). Holistic nursing: from Florence Nightingale’s historical legacy to 21st-century global nursing. Alternative Therapies in Health and Medicine, 16(5), 14-16. Nightingale, F. (1954). Notes on nursing: What it is and what it is not. In L.R. Seymer (Ed.), selected writings of Florence Nightingale (p.123-220). New York: Macmillan. (Original work published 1859).

Organisational Design Problem Coursework Example | Topics and Well Written Essays - 2000 words

Organisational Design Problem - Coursework Example The internal structures did not change to match the growth of the company like required for successful global expansions. As observed, the corporate culture left loopholes where the inferior performers get rewarded while the productive employees get penalized. The core value of the organizational structure is to ensure that activities like task allocation, coordination, and supervision get stirred towards achieving goals of an organization. As such, the structure of an organization is critical to the performance and operational modes. The structure is known to affect an organization in two positive dimensions. The first dimension is that it offers a foundation for the development of standard operating procedures and routines. The second dimension is the determination that individuals handle a certain task and decision-making process. The structure ensures that it defines the extent with which these views shape the organization’s choice (Campbell and Craig, 2005). There are several challenges faced by the company due to rapid expansion and poor organizational structure. When an organizational structure does not coincide with facts evolving in operational action, it leads to poor performance when the company is expanding (Armstrong, 1996). COY’s inadequate organizational structure hampered cooperation regarding the established centers and the headquarters. Consequently, it leads to the hindrance of completion of defined operations (Peris-Ortiz and Sahut, n.d.). The structure results in a lag in time and misuse of resources when poorly implemented. As such, the organizational structure should be adaptive to the process requirements. The primary aim would involve optimizing the ratio of effort and input to output (Bahram Ranjbarian, 2011). Normally, the strategy of a company that has poorly implemented its organizational structure will change but the

Short term finance sources Essay Example | Topics and Well Written Essays - 1500 words

Short term finance sources - Essay Example It is evident from the study that in today’s modern era, every business maintains a bank account of its own where it deposits the money it receives from the sales generated by the business. As the businesses expand, the ratio of their cash sales ratio decreases to the credit sales ratio, because of which the businesses can face difficulties in paying their short term and immediate expenses such as paying salaries of their work and the heating bill. This is when the businesses ask ‘their’ bank for an overdraft so that they can pay for their expenses. Bank overdraft is a form of loan given by the bank to its customers and businesses, where the customers and businesses are charged interest on the money spent by them. Another option that a business can exercise to pay for its expenditures and administrative costs is by arranging a short term loan from the bank. Any loan taken from the bank that has to be repaid within a year can be defined as ‘short term loanâ⠂¬â„¢. Trade credit is the number of days in which a business has to pay for the good it has received from the supplier. The number of days in which the payment has to be made for the business entirely depends on the working relationship between the supplier and the buyer. If the buyer has been maintaining a good reputation and has always being paying on time, the supplier may also go a little easy on the buyer by giving him enough time to arrange for the funds. Sale of unused assets: Most businesses only exercise this source of finance when all their sources of finance are have been used up. In this source of finance, funds are generated by selling unused fixed assets of a business or assets that the business is not making full use of, which may include extra machinery, buildings and vehicles. By selling the unused fixed assets, the business is able to generate enough funds to meet its requirements. In 2010, Lokul Oil used four sources of finance to meet their requirements which we re, Trade Credit, Sale of investments, Sale of property and Sale of its subsidiary companies. To generate funds to meet its short term obligations, Lokul Oil had to sell its short term investments, which included bonds and other cash equivalents. In addition to that, Lokul Oil also sold some of its subsidiary companies to generate enough cash for the company so that they don’t have to arrange for a bank overdraft or short term loans to pay for the expenses. The company also sold some of its property that it had bought long time back for expanding purposes, in order to generate cash to meet the short term obligations of the company. On the other hand, the primary sources of finance that were used by Premier oil to finance its expenses were Trade Credit, Sale of unused assets and Sale of investments. Premier oil asked their suppliers to extend the payment time given to them so that they meet their other short term expenses first, and then, when they have enough funds, the suppl iers will be paid. This helped in solving the problem of meeting short term obligations for Premier oil. Another source through which Premier Oil arranged for funds to meet its short term obligations was sale of its unused fixed assets, the assets that the company had in surplus. This included sale of property, offices, buildings, sites which were not profitable or were not generating enough revenue to meet the company’s demand. This source of finance helped in putting the idle money into use. Like Lukul Oil, Premier Oil also used sale of

Control labor costs Essay Example | Topics and Well Written Essays - 750 words

Control labor costs - Essay Example The company has to satisfy both the customer and the laborer in order to run a profit oriented business in a highly competitive world. Laws and legislations governing the workforce have evolved over the passing decades. Labor issues have always been sources of conflict and they are highly problematic. The employer has to study and develop techniques to control labor costs; he must create solutions which can be implemented and enforced in his company, with a view to garner maximum profits. One of the major reasons for spiraling labor costs is the unauthorized and unscheduled absenteeism of the workforce. The attendance and the time spent by the workforce must be monitored and the wages must be calculated on the basis of the percentage of the hours worked. This kind of labor monitoring can definitely lead to increasing efficiency. But such a timekeeping system must be devised which does not in anyway question the employee's integrity, but at the same time enables the employer to track the workforce. Labor costs can be kept under control by improving the productivity and efficiency of the employees. This can be done by imparting good training to the workforce and through the use of cost and time saving equipment. The government plays a major role in decisions regarding the compensation rendered to the employees. It is the duty and the responsibility of the government to ensure that the laborers are not subjected to any kind of wage or gender discrimination. The government must prevent exploitation of the workforce, especially child labor. The unemployed and disadvantaged who are on the dole need both minimum wages and insurance cover, which is provided by the government. The federal and state governments have laws concerning minimum wages for even jobs with low productivity. Standards have been set by the federal government regarding the compensation of employees. They are: Davis Bacon Act (1931), Copeland Act (1934), Walsh-Healey Act (1936), Fair Labor Standards Act (FLSA)(1938), Equal Pay Act (1963), Title VII of Civil Rights Act(1964), Service Contract Act (1965), Age Discrimination Act (1967) and Wage Garnishment Law (1968). This is an age of increasing mobility. Multi-national companies employ global nationals, expatriates, local nationals, and third-country nationals. Employees move around the world; therefore it is a highly complicated task to devise compensation packages for employees working in disparate situations. There are different types of employees in multi-national corporation - third country nationals, expatriates and local nationals. Third country nationals are those who belong to another culture or nation having similarities with their place of work. Expatriates are those living outside their country of citizenship. Local nationals are those who are employed in the nation of their origin. Employers, by and large, have adopted different paths toward controlling labor costs. Most of the employers have discovered that investment in labor management can reap the reward of greater efficiency. This in turn, would give rise to happier employees. Efficient labor management techniques can control spiraling labor costs. Data collection for creating the payroll of employees and the automation of the payroll system reduces labor cost to a great extent. A survey conducted by Clark Consulting in 2004 found that institutional investor limits and uncertainty about the future accounting treatment for stock-based compensation