Software Distribution on the Internet :: Essays Papers

Software Distribution on the Internet As society has come to terms with the ever widening use of the computer, people are starting to ask themselves should everything on the computer or internet be free for them to download? The ethics of our society are tested to see if they will be chosen to become one of the ever-widen population, that downloads this free software off the internet and uses it to benefit their computers and their wallets. I will be researching some websites that offer free software links on the internet, and also will be looking at pirated software off the internet that allows people to download software without having to buy it. On a recent search for "free software", at the website http://www.yahoo.com/, I found over two thousand websites that either distributed or provided links to free software on the Internet. Most of the software was available in one of two forms: shareware and freeware. Shareware is the term given too many trial versions, versions with a time limit that allows you to try it for free, with send-payment if you decide to keep it. Freeware is the name given to software that is distributed, with full knowledge and consent of the owner, in its entirety. [1] An example of this kind of software is the LINUX operating system. The LINUX operating system was invented by Linus Torvalds, one of the world’s best computer programmers. Fed up with the MS-DOS system in the PC’s in the early 1990’s, he started his own operating system and it took off like a rocket. â€Å"I had no idea what I was doing. I knew I was the best programmer in the world. Every 21-year-old programmer knows that. â€Å"How hard can it be, it’s just an operating system?†Ã¢â‚¬  [2] Furthermore he made his software available for the public to download this software off the internet, and spark the evolution of the open source software era, where people can just take whatever they want and making the Software companies feel the damages, because everyone is stealing their software instead of buying it. I also conducted a search for "pirated software" at http://www.yahoo.com/. The results of this search gave me over 1800 listings. The majority of these sites have only one purpose. That is to distribute illegally copied versions of software programs. These software programs are usually found exactly as one would find them if they had purchased them from a store.

Open-Book paper Essay

Alpha and beta decay are two types of naturally occurring radioactive decay. In alpha decay, an unstable nucleus emits an alpha particle (? ), a particle made up of two protons and two neutrons. For example:1 2 In beta decay, a neutron in the nucleus is converted into a proton and a beta particle (i ), an electron. Specifically, as protons and neutrons are both made of quarks, i -decay converts an up quark into a down quark; releasing a i -particle and an antineutrino (an antineutrino has no charge or mass, so does not affect the chemistry of i -decay). This occurs by the weak nuclear force. 3 For example:4 This table shows some of the differences between ? -decay and i -decay emissions:5 ?-decay i -decay Particle emitted helium nucleus electron Relative charge +2 -1 Relative mass 4 0. 00055 Range in air < 10cm < 10m Stopped by Paper Aluminium foil Deflection by electrical field Low High The fundamental difference between radioactive decay and nuclear fission is that, whereas radioactive decay is spontaneous, nuclear fission must be induced. In nuclear fission, when an unstable nucleus absorbs a neutron, it splits, emitting more neutrons and setting off a continuous chain reaction. This leads to products with nuclear masses around half those of the initial nuclei, whereas in radioactive decay, the initial and final nuclear masses are relatively close together. The other major difference is that fission releases considerably more energy than decay. This energy comes from mass lost in fission, according to the equation E = mc2, where E is energy, m is mass and c is the speed of light. Synthesis of Elements in Stars Stars produce their energy from nuclear fusion, in which nuclei join together to make larger nuclei. Hydrogen is used in normal-sized stars:(e+ represents a positively charged electron, and ? e is a neutrino). This process requires temperatures of around 13 million K and pressures of around 300 billion atmospheres. 6 When almost all of the hydrogen has fused, the helium nuclei can collide to make nuclei such as beryllium:7 This leads to the creation of further nuclei containing four nucleons: carbon, oxygen, neon and magnesium. Once all the helium has fused, further collisions take place between the created nuclei. This leads to the production of small amounts of hydrogen and helium, producing most of the first 18 elements, such as lithium:8. Lithium can also be produced by the collision of a Beryllium-7 nucleus and an electron. The nuclear process that takes place here is electron capture, in which an atom captures an electron, turning a proton into a neutron and releasing a neutrino. This happens by the weak interaction, like i -decay:9 Smaller amounts of lithium can also be produced in the fission of some nuclei by cosmic rays and in supernovae, when heavy stars become unstable and explode. 10 Producing Energy through Nuclear Fission and Fusion. In nuclear fission, an unstable nucleus absorbs a neutron, exciting the nucleus, causing it to oscillate and split into two smaller nuclei. This process releases more neutrons, causing more nuclei to split, and so on. This is shown in Fig. 211 with Uranium-235. The energy produced by nuclear fission, by E = mc2, is 3. 2Ãâ€"10-11 J per fission. 12 Uranium-235 is used to produce energy by fission – see Fig. 313. Controlling this reaction:   Uranium-238 is mixed with uranium-235. Uranium-238 nuclei absorb neutrons but do not react by fission, breaking the chain in the reaction. Graphite moderators placed in between the uranium rods reduce the kinetic energy of the neutrons produced so they can induce fission.   Boron-coated steel control rods absorb neutrons, and can be moved in and out of the reactor. If they are fully in, the reaction stops. Nuclear fusion takes place when, under certain conditions, two nuclei fuse together. For example, with deuterium and tritium:14 The energy produced comes from the mass lost – 3. 17Ãâ€"10-29 kg 15 16. By E = mc2, this gives out 2. 86Ãâ€"10-12 J per fusion. On earth, for this to happen the nuclei must be in ionised plasma at temperatures of 15Ãâ€"108 i C. The problem with this is that it must be kept away from the walls of the container to minimise heat loss. To do this, a tokamak is used. This uses magnetic currents to keep the plasma from touching the walls (see Fig. 417). The walls are made of graphite, which is not harmed by the temperature. Both fission and fusion have several advantages and disadvantages for use in producing electricity: Advantages Disadvantages Fission Uranium-235 produces 3. 7 million times the energy per unit mass as coal18   Uranium-235 will not run out on the same timescale as fossil fuels19. It produces no gases that directly cause global warming   Fission produces waste radioactive actinides, which are dangerous for thousands of years   Fission has led to disasters such as Chernobyl in 1986, which caused over 4000 deaths20 Fusion The fuel – hydrogen – is abundant   The radioactive waste products have half-lives hundreds of years less than those of fission   Fusion is safer than fission, as only small amounts of products are used   It produces no gases that directly cause global warming   The conditions required for fission are hard to produce. The process used to produce energy by fusion is not yet perfect – see below Challenges Facing the Development of Fusion Power Stations The major problem with fusion is generating and containing the conditions required for the reaction. As detailed above, a tokamak is used, this has some problems. The plasma still touches the bottom of the chamber, and where it does this; hydrogen reacts with the walls forming hydrocarbon radicals. These can form a film, which flakes away into the plasma, affecting performance21. Possible solutions include removing the film with lasers22 or using tungsten walls, which would not erode23. A probable source of a solution is the International Tokamak Experimental Researcher, currently being built in France. It will be used as a prototype to test the reaction on the necessary levels required. Fusion should be available to produce commercial power by 2040. References Used throughout the report:   Chemistry Review: Lise Meitner: Radiochemist, physicist and co-discoverer of nuclear fission, Gordon Woods, Volume 16 Number 1, September 2006 (Article 1); Fusion, Powering the future? , Chris Warrick, Volume 16 Number 1, September 2006; and Lithium, Chris Ennis, Volume 15 Number 31, February 2006 (Article 2). Salters Advanced Chemistry Chemical Ideas, George Burton et al, Heinemann Educational Publishers, Halley Court, Jordan Hill, Oxford, OX2 8EJ, ISBN 0-435-63129-9, first edition 1994, second edition 2000 1 Equation copied from page 3, Lise Meitner: Radiochemist, physicist and co-discoverer of nuclear fission; see above 2 Fig. 1 copied manually from Page 487, The exchange nature of forces, Advanced Physics, Tom Duncan, John Murray (Publishers) Ltd, 50 Albemarle Street, London, W1S 4BD, first edition 1972, ISBN 0-7195-7669-5, fifth edition 2000, reprinted 2002 3http://www. chemie. de/lexikon/e/Beta_decay, Beta Decay, (c) 1997-2008 Chemie.de Information Service 4 Equation copied from page 3, Lise Meitner. Radiochemist, physicist and co-discoverer of nuclear fission; see above 5 Table adapted from Page 20, Nuclear Reactions, Salters Advanced Chemistry Chemical Ideas; see above 6Where did the chemical elements come from? , Page 131, The Universe: A Biography, John Gribbin; published by Penguin Books Ltd, 80 Strand, London, WC2R ORL, ISBN 978-0-1410-2147-8, 2006 7Equation copied from Box 1: Nucleogenesis. Page 21, Lithium, Chris Ennis; see above 8Equation copied from Box 1: Nucleogenesis, Page 21, Lithium, Chris Ennis; see above.9 http://www. britannica. com/nobelprize/article-48278, electron capture with a Beryllium-7 nucleus, from the Encyclopaedia Britannica’s Guide to the Nobel Prizes, (c) 2008 Encyclopaedia Britannica, Inc. 10. Where do the chemical elements come from? , Page 10, Salters Advanced Chemistry Chemical Storylines, George Burton et al, Heinemann Educational Publishers, Halley Court, Jordan Hill, Oxford, OX2 8EJ, ISBN 0-435-63119-5 first edition 1994, second edition 2000 11 Fig. 2 taken from http://www. astro. bas. bg/~petrov/herter00. html, lecture notes for astronomy. Bulgarian Institute of Astronomy http://www.astro. bas. bg/ 12 http://www. lancs. ac. uk/ug/bloomer/nuclearpower/theory. htm, Nuclear Fission and Nuclear Fusion, from the University of Lancaster, www. lancs. ac. uk 13 Fig. 3 copied manually from Box 2, Article 1 (see above); adapted from Chemistry Today, (c) E. Henderson, Macmillan Publishers Ltd, 1977. 14 Equation copied from Box 2, Fusion, powering the future? , Chris Warrick; see above 15 Mass of reactants and products given in proton masses in Box 2, Fusion, powering the future? Chris Warrick; see above 16 Proton masses converted to kilograms using the mass of one proton as 1.67Ãâ€"10-27 kg, from Data Sheet, Page 3, AQA GCE AS Physics A Unit 1, January 2007 17 Fig. 4 taken from http://www. jet. efda. org/pages/fusion-basics/fusion3. html, Fusion Basics, (c) EFDA-JET 18 http://www. virtualnucleartourist. com/basics/reasons1. htm, a website â€Å"intended to provide you basic information about the different types of plants and their principle of operation†, (c) 2006. The Virtual Nuclear Tourist 19 http://www. abc. net. au/rn/scienceshow/stories/2007/2080110. htm, an interview with Professor Martin Sevior from the University of Melbourne by the Australian Broadcasting. Corporation20 http://www. who. nt/ionizing_radiation/chernobyl/who_chernobyl_report_2006. pdf, the World Health Organisation’s report on Chernobyl 21 Chemistry Review: Fusion, powering the future? , Chris Warrick; see above 22 http://www. lasers. org. uk/paperstore/Cleaning14. pdf, Dust Removal from Next Generation Tokamaks by Laser and Flashlamp Cleaning, K. G. Watkins et al, Lasers and Laser Engineering, University of Liverpool, 2001 23 http://www. jet. efda. org/documents/articles/samm. pdf, Controlled thermonuclear fusion enters with ITER into a new era, Page 12; Ulrich Samm, EFDA-JET, 2003.

Hamlet Goes Business - A Different Aproach to Hamlet

Introduction Hamlet, one of world’s most famous plays has been performed countless times all over the world during the 400 years, since it was written. It is clearly among Shakespeare’s most iconic plays and due to its popularity it is no wonder that it has been adapted to the big screen over sixty times already (www.absoluteshakespeare.com, accessed 2014). Taking a look at the original script, it is easy to see what keeps drawing filmmakers into the same text over and over again. The play follows Hamlet, prince of Denmark, as he proceeds to revenge his father’s death to Claudius, the new king. The story of Hamlet, filled with complex characters, strong emotions and passionate acts of love, revenge and even insanity, surely has lots of interesting themes for filmmakers to dig in. The attraction of this particular play is possibly the many different interpretations of it. The play as well as the characters have multiple different sides that can be emphasized, changing the atmo sphere and perhaps also the meaning of the story. This can be seen, by observing a very different and unique film adaptation from Finland. Hamlet Liikemaailmassa (Hamlet Goes Business) is a 1987 film from Aki Kaurismà ¤ki. With nearly 20 feature films and various international film awards, including Cannes, Kaurismà ¤ki is currently one of the most internationally recognized film directors from Finland. His work has an original, easily recognizable style that consists of plain, minimalistic expression,Show MoreRelatedTop 1 Cause for Project Failure65023 Words   |  261 PagesProgramme Managers. The programme as you can imagine suffered from scope creep or actually scope cuts to meet continuing slipping go-live dates. The Programme PMO has had in 18 months had seven different PMO Managers. There was poor co-operation between the different Programme entities. Nobody seemed to have overall authority and lack of accountability allowed the Programme to severely slip and go over over budget. The Programme Director eventually resigned closely followed