Internal Network Security - 1451 Words

Introduction The development of technology has brought Internet to become the mass communication media between people or companies. Through Internet, people can communicate with other people in various places. Companies can get many advantages by using Internet network to support their business. Therefore, companies are trying as hard as they can, and give high effort in protecting their network from attack and make sure that they have the best network security. Most people think that the threat of security attack is only come from outside the company. In fact, the attack from inside the company network is more harmful with high frequency to be happened. As written by Cryptek (2001), which based the argument from some articles, that†¦show more content†¦If these vulnerabilities is not handle soon by the company, the information assets belong to the company can be easily steal from inside networks. Developing Secure Internal Network From all the attacks might threat corporate network either from outside or inside, company must think critically and fast to maintain the security of its network by building the good network security design. It is not enough for a company to rely their network security to the firewall only, since we’ve seen that the company network is also vulnerable with inside intrusion. To build a good internal security system, company must be able to integrate system, by using good hardware tools that can guarantee the flexibility, easiness to build and easy integration with other network. Company must also be able to build a good and strong internal security management, which allow us to control the system centrally. With the central monitoring, we can reduce the costs of developing the systems. The last tools may work is to integrate the security capabilities. As described by Cryptek (2001), the good management must be able to distributed user identification and authentication, distributed firewall capabilities and VPN technologies. There are someShow MoreRelatedInternal Network Security1463 Words   |  6 Pagespeople in various places. Companies can get many advantages by using Internet network to support their business. Therefore, companies are trying as hard as they can, and give high effort in protecting their network from attack and make sure that they have the best network security. Most people think that the threat of security attack is only come from outside the company. In fact, the attack from inside the company network is more harmful with high frequency to be happened. As written by Cryptek (2001)Read MoreSecurity Monitoring1041 Words   |  5 PagesSecurity Monitoring Mobin Bahrami University of Phoenix Information Systems Risk Management CMGT/442 June 22, 2012 Brian Hoff Intro Security monitoring is an important factor in keeping any organization network safe as various attacks are on a rise. A company constantly must practice monitory techniques to keep their data safe. The first step is to scan the internal and external environment and identify information technology risks before they become a problem. The key is to be proactiveRead MoreRiordan Security Issues1359 Words   |  6 PagesRunning head: WEB SECUIRTY ISSUES AND CONCERNS CMGT 440 - Introduction to Information Systems Security University of Phoenix Abstract Introduction Riordan manufacturing is a plastic injection molding company based in San Jose. The company also has various operations in 3 other Michigan cities as well as one overseas office in China. â€Å"Riordan has a 46 million annual earning† and their major customers are automotive parts manufacturers, aircraft manufacturers, the Department ofRead MoreEssay about Network Security Monitoring Tools873 Words   |  4 PagesThere are numerous network security devices and tools available to aid in computer network defense, and these tools are often relied upon for protecting against increasingly sophisticated, stealthy, and damaging attacks. When acting alone, the current generation of security devices has an exceedingly difficult time providing an effective defense against such threats, and the situation is particularly grim for targeted or novel attacks. It has been demonstrated that a number of interoperable systemsRead MoreManaging the Virus Hunters771 Words   |  4 Pagesall our networks at Syamntec, software analysts collect viruses and other suspicious code and try to rigure out how they work so security updates can be provided to the companys customers. By the door to the lab, theres even a hazardous materials box marked Danger where they put all the disks, tapes, and hard drives with the nasty viruses that need to be carefully and completely disposed of. Symantecs situation may seem unique, but the company, which makes content and network security softwareRead MoreKaspersky - Anti Virus1113 Words   |  5 PagesINTERNATIONAL BUSINESS LJUBLJANA, 5TH MARCH 2013 1. PERFORM A SWOT ANALYSIS FOR KL. SWOT stands for Strengths, Weaknesses, Opportunities, and Threats. By definition, Strengths (S) and Weaknesses (W) are considered to be internal factors over which you have some measure of control. Also, by definition, Opportunities (O) and Threats (T) are considered to be external factors over which you have essentially no control. 2. FROM THE KLS STANDPOINT, HOW WOULD YOU SEGMENT THE POTENTIAL Read MoreThe Security Of A Home Network1352 Words   |  6 Pages Yu Lun Chou 1730799 MADS 6638 Computer Security Admin. George Thucydides 4/26/2016 Table of content Introduction Inventory Vulnerability Test Protection Support Incident Response  Introduction Information play an essential role in everywhere. For a company, in order to run the company well, information management is a necessary skill, and leaking information, odds are , causes significant damage to the company. Even though a private network will not have as great damage as an organizationRead MoreAnnotated Bibliography On Software Firewalls Essay1798 Words   |  8 PagesCHAPTER 6 EXERCISE 1 SOFTWARE FIREWALLS: A Firewall basically prevents the private network connected to the internet from being accessed by unauthorized user and therefore handles the traffic of internet. Hardware and software firewalls are the types of this network security system. It examines the each data in the network and blocks the data which is not valid and are from unauthorized user. We will discuss here only software firewalls. Software firewalls: Software firewall is suitable for theRead MoreBest Practices For Network Security2439 Words   |  10 PagesBest Practices for Network Security Network security, in this technological age, should be one of the most important items of concern for any business owner or network administrator. Since just about every company out there is connected to and conducts some sort of business over the Internet, just about every one of them is at risk from outside threats. This means that they should take certain steps in order for them for them to conduct their business securely. Beyond the initial steps, it mustRead MoreWorldwide Network Security7789 Words   |  32 PagesMARKET ANALYSIS Worldwide Network Security 2012–2016 Forecast and 2011 Vendor Shares John Grady IDC OPINION The worldwide network security market grew by 6.1% in 2011. The total market, which includes firewall, unified threat management (UTM), intrusion detection and prevention (IDP), and virtual private network (VPN) solutions, reached $7.4 billion in 2011. UTM revenue saw the strongest growth at 17.4% and reached $2.2 billion. The IDP market saw more moderate growth at 4.5%, reaching $1.9

Math 208 Week One Individual Free Essays

Chapter 1 – Section 1. 1 Write the interval of real numbers in interval notation and graph it. See Example 5. We will write a custom essay sample on Math 208 Week One Individual or any similar topic only for you Order Now 50. The set of real numbers less than or equal to -4 Consider the following nine integers: -4, -3, -2, -1, 0, 1, 2, 3, 4 94. Which of these integers has an absolute value greater than 1? Solution: -4, -3, -2, 2, 3, 4 Write the interval notation for the interval of real numbers shown in the graph. __________________ -50 -40 -30 -20 -10 0 A B Hint: replace a with (-3) and evaluate each expression. Which are positive and which negative? a)-3 solution: positive (b)|-3| solution: positive (c)-|3| solution: negative (d)-(-3) = 3 solution: negative (e)- | -3| solution: negative Chapter 1 – Section 1. 2 Build up the fraction so that it is equivalent to the fraction with the indicated denominator. See Example 1. 5/7=? /98 (fraction problem) Let the missing number be x then Therefore, Convert the given fraction to both decimal and percent. See Example 8 or use a calculator. 19/20 = 0. 95, 95% Perform the indicated operations. See Example 7c. Chapter 1 – Section 1. 3 Fill the correct value in the parentheses to make the statement correct. See Example 4. Solution : -9-(-2. 3) = -9 + 2. 3 Perform the indicated operations. -19-13=-32 Perform the indicated operations. 15 + (-39) = 15 – 39 = -24 Fill in the correct value in the parentheses so the equation is correct. Let the missing number be x then 13 + x = -4 Subtract 13 from each side, we will get x = -4 – 13 = -17 13 + (-17) = -4 Answer: -17 Chapter 1 – Section 1. 4 Perform the indicated operation. (-8)(-6) = 48 Perform the indicated operations and reduce to lowest terms. 9/10 x4/3 Solution: = – 36/30 = -6/5 Fill in the correct value in the parentheses so the equation is correct. -48 divided by ( )=6 -48/ x = 6 ?-48 = 6x ?x = -48/6 = -8 Therefore, -48 (-8) = 6 Chapter 1 – Section 1. 5 Evaluate the expression using order of operations.. See Example 8. 3[(2-3)^2 +6(6-4)^2] = 3[(-1)^2 + 6*(2)^2] = 3[1 + 24] = 3*25 = 75 Evaluate each expression using order of operati ons.. See Example 8 a) 8 – 3 |5 – 4 + 1 | = 8 – 3|5-16+ 1| = 8 – 3|-10| = 8-3*10 = 8 – 30 = -22 Chapter 1 – Section 1. 6 Evaluate each expression using a = -1, b = 2, and c = -3. See Example 4. (a – c)(a + c) = a^2 – c^2 = (-1)^2 – (-3)^2 = 1 – 9 = -8 Determine whether the given number is a solution to the equation following it. See Example 5. Let us substitute x = 5 in the given equation, we will get 3(5) + 7 = 2(5) – 1 15 + 7 = 9 22 = 9 Which is not true Therefore 5 is not the solution of the given equation Chapter 1 – Section 1. 7 Use the commutative and associative properties of multiplication and exponential notation to rewrite each product. See Example 3. y(y*5)(wy) y(y * 5)(wy) =5wy3 Use the distributive property to remove the parentheses. See Example 5. -3(6-p) 3 (6 – p) = (-3)6 –(-3)p = -18 + 3p Chapter 1 – Section 1. 8 Combine like terms where possible. See Example 3. Simplify the following expression by combining like terms. See Example 8. 2a(a – 5) + 4(a -5) = 2a2 – 10a + 4a – 20 = 2a2 – 10a + 4a – 20 = 2a2 – 6a – 20 Simplify the expression. 1/4(6b+2)-2/3(3b-2) (Please note!! the ? and the 2/3 are fractions) Solution: How to cite Math 208 Week One Individual, Papers

An Introduction To Qualitative Research †MyAssignmenthelp.com

Question: Discuss about the An Introduction To Qualitative Research. Answer: The most important thing(s) for me in the introduction section of a high-quality research report is the importance of the topic that is going to be investigated in the research report. I feel that it is important to inform the readers about the significance of the research topic and why it is important to make the research proposal. I feel that it is important to give a fair idea of the research topic and also inform the readers about its actual relevance in todays business world. The introduction part should also contain a road map of the main contents of the research and how the research report would be presented. It would give an idea regarding the contents and also align the expectations of the audiences with it. This road map should be logical enough and also it should be easy to be implemented. I feel that the future scope of study should also be laid down well otherwise the readers might just lose interest. The new knowledge areas that can be advanced with the help of this research should be well represented in the introduction part. I have seen that the lecturers are always eager to know the actual scope of the study to determine if the study is actually feasible or not. I also think that the introduction should be made in a coherent, clear and logical manner so that the readers feel interested in reading the content. This would also engage the readers in the content. Bibliography Flick, U. (2014).An introduction to qualitative research. Sage. Taylor, S. J., Bogdan, R., DeVault, M. (2015).Introduction to qualitative research methods: A guidebook and resource. John Wiley Sons.

Midsummer Essays - Hermia, Demetrius, Helena,

Midsummer Nights Dream The difference between a play and other forms of literature is that a play is meant to be seen and heard, not merely read. As such, the playwright's text is the center of a larger effort on the part of director, actors and designers as they attempt to aid the audience's understanding of the play's plot, their sympathies with its characters and, ultimately, with the themes that it addresses. Each scene of a play helps an audience to build its appreciation of the play as a whole. The director, actors, designers and other various stage hands are all part of a team that helps to convey the writer's ultimate message. The greatest example of any of these principles would most likely be found in a Shakespearean play. I believe Act 3, Scene II in "A Midsummer Night's Dream" would be the best illustration of this theory. Now the characters in this scene are Oberon, Robin Goodfellow, Lysander, Demetrius, Hermia and Helena. Oberon is the king of the fairies. His mission in this scene is twofold; get Titania, his wife, to fall in love with a beast and have Demetrius fall in love with Helena. In the end he achieves both goals. Robin is basically a bumbling sidekick to the king. Oberon gave him the potion to put on Demetrius' eyes, but he instead puts it on Lysander's. Lysander is in love with Hermia as she is with him. Helena is in love with Demetrius who was at one time in love with her, but now would like to marry Hermia. This scene takes place deep in the forest. I think this is very important, because the forest is a dark place full of mystery, and mystery is a nice prelude to romance. It must not be a very big forest, because when Hermia asked Lysander to meet her there, she never established any specific spot. This adds to the idea that this is a very localized problem. Everyone knows who everyone else is, and everyone is in love with the wrong person. Now Lysander and Hermia were supposed to meet in the forest to plan their elopement, but Helena told Demetrius of their plans in order to gain his favor. Demetrius ran after Hermia and Helena ran after him. Of course no one knows that anyone's been anointed with any love potion which creates most of the confusion. Once Robin gets it right and gets Demetrius to fall in love with Helena, she mistakes it for some cruel joke. Hermia however, takes the situation all too seriously. She really starts to believe Lysander is in love with Helena, especially when he's ready to duel with Demetrius for her hand. Luckily, however, Robin impersonates the both of them, and he leads them away from each other to someplace they can each fall asleep. We see many different themes throughout this scene. The theme"love is blind" is certainly conveyed powerfully. How else could we explain Titania being in love with Bottom, who at this point has the head of an ass? This also explains how Lysander can suddenly be in love with someone whom he's never shown the slightest bit of interest in until now. Of course there's also the reversal of roles in this scene. In a previous scene, Helena was being treated as one would treat a dog. Demetrius was literally shaking her off of his leg, while she simply asked for more when she said, "I am your spaniel, Demetrius, The more you beat me I will fawn on you". In this scene however, Demetrius has a change of heart and we hear him proclaim, "O Helen, goddess, nymph, perfect, divine! To what, my love shall I compare thine eyne?" Hermia, who up till now was wanted by both Lysander and Demetrius, gets nothing but loathing from the two. Where before they would shower her with nothing but praises, now they shout insults at her, and even threaten her with bodily harm. You would think all this messing around with people's emotions would complicate the plot to immeasurable ends, but in the end it actually begins to resolve it. Because of Robin's little mishap, we have a great deal of confusion during a good share of this scene. Demetrius and Lysander are ready to kill each other in order to be with Helena. This is apparent when they exchange "fighting" words: LYSANDER: Now She holds me not. Now follow, if thou dar'st, to try whose right, Of thine or mine, is

Extraction of metals and Alloys Essays

Extraction of metals and Alloys Essays Extraction of metals and Alloys Paper Extraction of metals and Alloys Paper An alloy is a mixture of metals, which may have different and improved qualities from metal elements, which make it. The percentage of elements in an alloy can be tailored to the application or purpose it is being made for. Usually an alloy is made of one metal (the base metal) with small amounts of other metals added. The other metals replace the position of the base metal in its structure. Extraction of Metals An element or a compound in nature inside the earths crust is called a mineral. They have a percentage of metal which can be extracted. This is called a metal ore. The most common metal ores are oxides and sulphides. Sulphides are the oldest ores. Oxides are formed when photosynthesis in plants release oxygen into the air. Metal ores are an infinite resource and once they are used, they are gone. Recycling helps this. Generally half of all metal is recycled through scrap metal facilities. The Reactivity Series (See appendix diagram 1) A metal that is under carbon in the Reactivity Series (zinc to silver) can be extracted from its ore by heating with carbon. Carbon is used as it is easily available and its cheap (coke and charcoal are both carbon). The metal is then reduced by the carbon. Hydrogen may be used to reduce other metals which are lower than it on the Reactivity Series. It is more expensive than carbon. It is only used for the extraction of tungsten. Gold and platinum are found naturally as elements and do not need to be reduced. Silver and copper are also naturally found. Extraction of Metals and Alloying Metal ores are found in the earth. They are rocks containing mineral or metal compounds or metals themselves and need to be extracted or removed from the rocks and the ground. To extract a metal from its ores you need to know its reactivity. The process involves a chemical reaction where the metal is separated from the other elements in the mineral. History of Metal Extraction Metals have been used by people for thousands of years. Gold and silver found in nature, were used for jewellery to show how wealthy people were. These two metals are too soft to be used as tools. The first useful metal discovered was bronze (the Bronze Age). Bronze was used a lot for tools and weapons in Asia and Africa from 4500 B.C. and in Britain from 2000 B.C. Bronze is not an element but an alloy of copper and tin. Ores of copper and tin can be reduced by heating with carbon. This would have happened as people lit wood fires in a place where tin and copper ore were. The burnt wood would have made the ores (copper and tin) into bronze. After the Bronze Age, coal fires were used to produce enough temperature for the extraction of iron (hence the Iron Age) The Iron Age began in Asia and Africa in 1100 B.C and in Britain in 500 B.C. Metals above carbon in the reactivity series can only be extracted by electrolysis. With the discovery of electricity in the nineteenth century, this allowed the extraction of more reactive metals. Aluminium has been extracted since around 1870. (3000 years since they found iron and 6000 years since they found bronze). Extraction of Aluminium Aluminium is the third most abundant (plentiful) element in the Earths crust. It is more abundant and the more expensive to produce compared with iron. This is because it takes a lot of electricity for the extraction process of electrolysis to happen. Around half of aluminium used is recycled. It takes less energy to recycle aluminuim than to extract it from its ore. Handling costs of aluminuim in the recycling process adds to this. Aluminium is high in the Reactivity Series and is resistant to corrosion as a thin layer of aluminium oxide on its surface protects it from corroding. Aluminuim has the ore called bauxite. Bauxite has aluminium oxide, water, iron and other things. The purified ore is called alumina (aluminium oxide). Alumina needs to be liquid or molten before the extraction method of electrolysis can happen. Alumina has a high melting point, so electrolysis cannot be done at this temperature. Alumina can dissolve in cryolite, which makes it have a lower melting point so electrolysis can be done at about 950oC. The main alloy of aluminium is Duralumin. Aluminuim is also used in titanium alloys. Duralumin is an alloy of aluminuim (94%), copper (4%) and magnesium (1%). There may also be small quantities of manganese and silicon in the alloy. Duralumin is a low density alloy that has a greater strength to weight ratio than aluminium. Duralumin is used for aircraft construction. Properties and Uses of Aluminuim Aluminium is strong and has a low density. It is also resistant to corrosion and can be easily bent into any shape. Aluminium is a good conductor of heat and electricity. It can be polished to achieve a highly reflective surface. Aluminuim can be used for making aircraft, lightweight vehicles, and ladders because it has a low density and it is strong. An alloy of aluminium, called Duralumin is used instead of pure aluminium because of its improved properties. Aluminium, as it is easy to shape and corrosion resistance, is a good material for making drink cans and roofing. Its also used for greenhouses and window frames because of its low density and resistance to rust. Aluminium is a good conductor of heat, so it can be used for boilers, cookers and cookware. As it is a good conductor of electricity, it is used for power cables and wire. Aluminium is highly reflective so its used in mirrors, reflectors and heat resistant clothes for fire fighters to use. Extracting Aluminium (See appendix diagram 2) A steel container is coated with carbon this is the negative electrode Electrolysis now begins. As aluminium is denser than the alumina and cryolite, it falls to the bottom where it is tapped off as pure liquid metal. Oxygen is removed from the positive carbon electrodes. Oxygen reacts with the carbon to form make carbon dioxide. Extraction of Iron Iron is extracted from its ore in a Blast Furnace. The ore is called Haematite. This is iron oxide. The iron ore has impurities in it, usually silica. Limestone is added to the iron ore which reacts with the silica which forms molten calcium silicate in the blast furnace. The calcium silicate floats on the liquid iron. Iron is low in the Reactivity Series, so iron ore is reduced into iron metal by heating with coke. How the Blast Furnace Works (See appendix Diagram 3) Hot air is blasted into the Blast Furnace which creates the carbon or coke to ignite. The temperature is about 2000oC. Carbon dioxide reacts with the carbon and makes carbon monoxide. This reduces iron in the ore into iron metal. Iron then drops to the bottom as liquid iron and is tapped off as needed. Properties and Uses of Iron Iron is a magnetic metal. Iron from a Blast Furnace contains around 5% carbon which comes from the coke in the furnace. It is put into molds called pigs, and the iron is then called cast iron or pig iron. It is very brittle and cracks easily, but it has a good resistance to corrosion compared to pure iron or steel. Cast iron is used for manhole covers and for engine blocks for petrol and diesel engines. Carbon is removed from molten cast iron by bubbling air through it. The air reacts with the carbon before it reacts with the iron because its more reactive (the carbon). Pure iron with the carbon removed is called wrought iron. This metal is easily shaped and is used for ornamental metal work like gates. The iron in the Blast Furnace is made into steel for use in construction. Alloys containing Iron The iron alloys are steel, manganese steel and stainless steel. Steel is a fixture of iron and carbon. The percentage of carbon may vary from 0.1% to 1.5% giving steels different properties. Steel is inexpensive and strong and easily shaped. It can be used on the construction of bridges, buildings, ships and vehicles. More than half of the steel is recycled. Steel will need a protective coat, like paint or it will rust. Rusting reverses the process that happens in a Blast Furnace. Manganese steel is an alloy of iron. Its iron (84%) and manganese (15%) and carbon (1%). It is very hard and is used for railway points and dredging equipment. Stainless steel is an alloy of iron. It is iron (80%) and chromium (15%), nickel (4%) and carbon (1%). Stainless steel is very strong, hard and resists corrosion. It is used in cookware, cutlery and industrial chemical plants. Corrosion of Iron and Steel When iron is exposed to air it will return to its oxide. This is called rusting or corroding. This process needs both oxygen and water, salt or acid will make corroding faster. You can prevent rust by coating the surface so the air doesnt come into contact with it. It can also be protected by a more reactive metal (See the Reactivity Series in the appendix diagram 1). Iron and steel are mostly protected by paint, plastic coating or metal plating. Zinc plating is called galvanizing. Chromium plating is used for wheels and bumpers of cars to give a polished surface. Sacrificial protection is used for ships, under water pipelines and oil rigs. Extraction of Copper Copper is sometimes found as a native metal. Copper ore can be reduced by causing it to react with carbon. The most common way is by heating copper sulphide ore which breaks down. The impure copper that results is called blister copper. Around half of all copper is recycled each year. Pure copper is needed for good electrical conductivity. Pure copper is made from the extraction method of electrolysis. Extraction of Copper Purification (see appendix diagram 4) The impure copper, when electricity is put through the cell, copper dissolves at the anode into solution. Copper forms at the cathode by reduction. Copper ions move from the anode to the cathode. The anode gets smaller and the cathode gets bigger. This is called the redox reaction. The impurities dissolve and fall to the bottom as sludge, which can have silver and platinum in it which can be taken out. Properties and Uses of Copper Copper is an excellent conductor of electricity and heat. It is soft and easy to shape. Copper is also corrosion resistant. It can be used for electrical wiring (so can aluminium) Copper is also used in cookware, but is not very common. It is used in gas pipes as it is easily bent for the application for it is ideal to use. Copper is used for water pipes for the same reason as why it is used for gas pipes. Copper is below hydrogen in the Reactivity Series (See the Reactivity Series in the appendix diagram 1), so it does not react with water. Lead was always used in plumbing in the past, but is being replaced with copper because of the lead going into the water which is toxic. Copper is mixed with other metals to form alloys, mainly zinc for brass and tin for bronze. Alloys containing copper include brass, bronze, cupro-nickel and duralumin. Brass is an alloy of copper (70%) and zinc is (30%). Brass is harder and less expensive than copper and can be used for musical instruments, screws and other fixtures or ornamental objects that need to be corrosion resistant. Bronze is an alloy of copper (90%) and tin (10%). Bronze is harder and stronger and rust resistant. Bronze is used for casting objects and bearings (e.g. wheel bearings). Cupro-nickel is an alloy of copper (70%) and nickel (30%). It is easily shaped and it is rust resistant and is used to make silver coins e.g. 5c, 10c, 20c, and the 50c pieces. Silver coins have not contained real silver since 1947. Alloys containing Lead The main alloy of lead is solder. Solder is an alloy of lead (70%) and tin (30%). Half of the lead and tin used each year is recycled. Solder has a low melting point and is stronger than lead or tin. Solder is used for connections in electrical wiring and plumbing. Properties and Uses of Lead People have used lead as long ago as 5000B.C. Lead is a shiny metal that is corrosion resistant and very dense and soft. It is toxic if absorbed by the body. Lead is rarely found in nature and it is a heavy metal. It has a low melting point and is flexible. It conducts electricity. Lead is able to be shaped into many things from water pipes to coins and stained glass windows. It also is used in car batteries and TVs and computers. It is also used for making wheelchairs, lift trucks, baggage loaders, golf carts and submarines. Lead is also used to absorb radiation around x-rays and nuclear equipment. Its also used in computer screens to again absorb radiation. It also absorbs sound. Leads used as a shield around electrical cables. Alloys of Titanium Titanium is mixed with aluminium (5%) and vanadium (5%). Titanium is expensive and is only used where its properties are needed. Its properties are its low density, hardness and rust resistance. Titanium alloys are used in special parts of aircraft and ship construction and chemical plants and hip joint replacements. The mined minerals are sent to mills to be separated from one another using electrical and magnetic techniques. To obtain pure, white titanium dioxide, the minerals are reacted with chlorine then burned in oxygen. Producing pure titanium metal is only done overseas, where mineral sands are reacted with other chemicals and then heated Properties and Uses of Titanium Titanium is a newish metal which started to be commercially produced in the 1940s. It is lightweight, strong and rust resistant. Titanium is a silver white metal and is soft when alloyed with other metals. It has a high melting point. It is non toxic and has many uses. Titanium is used to make aircraft engines, spacecraft, missiles, cars, sports equipment, watches, and general industrial equipment. Being non-toxic, it can be used for pacemakers, artificial joints and bone pins. Alloys and Recent Developments In recent times, the development of alloys has flourished because of further research and development of metals and characterising metals and the implementation of new materials and processes. Using previous philosophy of how metals are extracted and alloyed and advancing on these techniques which include using the modern top-down method that eliminates design constraints in the earlier manufacturing process. The discovery of high strength steels for new applications is a recent development. This means that the steels are stronger, tougher and even have a higher rust resistance when alloyed. New alloys of stainless steel have also been developed and the metal can now be used for new applications previously unavailable, especially in aviation. High temperature metallic materials can now be used in casting alloys in the wrought processing of alloy sheet technology. Also new super-alloys are being produced that can take higher temperatures using new chemistry processes. Alloys have in recent times needed to be lighter and also retain their strength for use in modern applications. Another recent development is the production of alloys is called Al-Li, which has great corrosion prevention compounds. Researchers are now developing fatigue resistant alloys to reduce failures of components and less maintenance. Lastly, low cost methods have been found, including single hearth melt, laser deposition and casting for titanium alloying has been discovered.

Overview of Crime Mapping and Analysis

Overview of Crime Mapping and Analysis Geography is a field that is ever-changing and ever-growing. One of its newer sub-disciplines is crime mapping, which uses geographic technologies in order to aid in crime analysis. In an interview with Steven R. Hick, a leading geographer in the field of crime mapping, he gave a thorough overview of the state of the field and what’s to come. What Is Crime Mapping? Crime mapping identifies not only where the actual crime took place, but also looks at where the perpetrator â€Å"lives, works, and plays† as well as where the victim â€Å"lives, works, and plays.† Crime analysis has identified that the majority of criminals tend to commit crimes within their comfort zones, and crime mapping is what allows police and investigators to see where that comfort zone might be. Predictive Policing Through Crime Mapping The use of predictive policing is a much more cost-effective approach to policing than past policies. This is because predictive policing not only looks at where a crime is likely to occur but also when the crime is likely to occur. These patterns can help police identify what time of day it is necessary to flood an area with officers, rather than flooding the area twenty-four hours a day. Types of Crime Analysis Tactical Crime Analysis: This type of crime analysis looks at the short-term in order to stop what is currently taking place, for example, a crime spree. It is used to identify one perpetrator with many targets or one target with many perpetrators and provide an immediate response. Strategic Crime Analysis: This type of crime analysis looks at the long-term and on-going issues. Its focus is often on identifying areas with high crime rates and problem-solving ways to decrease the overall crime rates. Administrative Crime Analysis This type of crime analysis looks at the administration and deployment of police and resources and asks the question, â€Å"Are there enough police officers at the right time and place?† and then works to make the answer, â€Å"Yes.† Crime Data Sources Crime Mapping Software ArcGIS MapInfo Crime Prevention Through Environmental Design CPTED Careers in Crime Mapping There are classes available in crime mapping; Hick is one professional who has been teaching these classes for several years. There are also conferences available for both professionals and beginners in the field. Additional Resources on Crime Mapping International Association of Crime Analysts The National Institute of Justice (NIJ) is a research agency of the United States Department of Justice that works to develop innovative solutions to crime.

Purchasing and procurement in supply chains Essay

Purchasing and procurement in supply chains - Essay Example Thus, this study was initiated to investigate the application of supply chain management strategy in Boeing Company. The choice of Boeing is based on its strategic position in the aircraft manufacturing sector and the series of problems it faces of late. Using, appropriate theoretical framework, deduced from the work of previous researchers, the company was diagnosed, and the supply chain and suppliers relationship mapped out. Porters value chain framework also help us develop some feedback and the way forward where some value drivers, core competences and competitive advantage were identified. Having suppliers dotted all over areas and the need to link them through a common data base was emphasized. The report of calls on top management to successfully adjust Porters value chain to suit its need. Our recommendation is for customers and suppliers to be effectively integrated into the value chain, where consumers become Pro-sumers and suppliers are turned into consumers. The existing relationship with partners, suppliers, and customers should be turned in to a long term collaboration relationship. Boeing should integrate its logistics, procurement, operations, and marketing functions with other supply chain members so that materials, information, component parts, and finished product flow seamlessly from point of origin to final customer at low unit cost and at high levels of service (Christopher 1992). Supply chain management (SCM) is a strategic tool employed by present day business to efficiently integrate suppliers, manufacturers, warehouses, and customers so that merchandise is produced and distributed at the right quantities, to the right locations, and at the right time in order to minimize system wide costs while satisfying service-level requirements ( Cheng, Lai & Gunasekaran 2006). In the 90s, SCM gained momentum and received due attention from practitioners and researchers. It has become present day managerial competitive weapon

Walmart, Inc Essay Example | Topics and Well Written Essays - 500 words

Walmart, Inc - Essay Example Once inside, customers are able to easily change the app to store mode from online mode, thus creating room for them to enjoy interactive in-store experiences such as scanning bar codes for pricing and going through Wal-Mart’s interactive in-store circular, which will enable them to keep a record of everything theyve bought thus tracking overall expenditure. This new change adopted by the organization gives customers the ability to switch from online to store mode, giving Wal-Mart app users an opportunity to compare prices with other eTail sites and customers will now be able to purchase out-of-stock items online (Paul, Lori, & Hayagreeva, 2010). Wal-Mart was formed by Sam Walton. It was Sam’s leadership which brought about the rapid growth of Wal-Mart’s success. This colossal achievement was achieved as a result of Sam’s vision that he nurtured to realization by incorporating leadership and management practices that were highly effective. Wal-Mart’s current commitment to valuing people in the entire facet of its leadership, management and culture was cultivated overtime (Wollam, 2009). 3. How would you improve the change leadership process at this organization? Provide your suggestions and recommendations for improvement and explain why they will promote positive change within the organization. Come up with a comprehensive mission statement for the organization’s mission statement with its activities aligned with the organizations vision. For example, Wal-Mart’s primary goal is to offer and deliver high quality goods for all marketing, advertising and research, and development activities should be focused on the quality of goods, modes and speed of delivery. Task forces which bring together the organization’s leadership to discuss strategy should be created. This task force will be working together to come up with short- and long-term road maps for the organization which

Protagonist and a Chorus Essay Example for Free

Protagonist and a Chorus Essay Aurthor Miller the author of A View from the Bridge shows an interest in his writing across the variety of novels he has written has been about the average person. The play was set in the 1950s. The key elements of a Greek tragedy are that it has a Protagonist and a Chorus.  The play starts with the chorus speaking to us, announcing the scene and sets a happy feeling. Marco and Rodolfo, immigrants in America, cause friction within the family located on the docks. Throughout the play Eddies Character goes through the tragic arc. At the end of the play this friction develops into Eddie getting killed. We would see a hero being brave when things start getting tough, helping people who need that aid, just like how Eddies character followed at the start of the play. Unfortunately we see Eddie following the role of a tragic hero a hero that tries to be a stereotypical hero but fails miserably. Eddie, Protagonist of the play, is presented as being a stereotypical Hero. I promised your Mother on her deathbed. Im responsible for you. A side of Eddie being heroic as he brings up Catherine as her Mother has passed away. The audience look up to Eddie as being a role model as he is seen to be a generally caring person gaining the readers respect. You aint all the girls. Eddies speech when he is replying to Catherine as she talks about how her clothes are suitable. It shows us how Eddie is looking out for her which is a hero aspect but we also see a side of him that he is being too over protective and perverted which can seem to be quite disturbing. Beatrices cousins Marco and Rodolfo come over from Italy to visit. When are you going to stop fancying her Beatrice addresses to Eddie that she knows how he feels towards Catherine, also saying how it is wrong as he is looking at other women rather than his wife which could be quite upsetting to Beatrice. When am I gonna be a wife again this is another sentence that Beatrice uses to show us as the audience how annoyed she is about the situation of Eddie and Catherine. We understand this quote to basically say when he is going to forget about Catherine and show more time with Beatrice. Eddie makes a dramatic fall within the tragic arc when he kisses Catherine to spite Rodolfo. As she strives to free herself he kisses her on the mouth. Eddie having a Wife and also being a Uncle to the girl he just kissed as we already know at this part of the novel Eddie wants to be more than just her uncle, the audience would find this very vulgar and disturbing. Eddie did this almost to brand her to show Rodolfo that Catherine is Eddies property and not his. Rodolfos character reacts to the kiss as he lunges towards Eddie with anger, pins his arms, laughing and suddenly kisses him. Eddie does this purely to humiliate Rodolfo; we can see this from the work used laughing as Rodolfo could not fight back. The kiss that Eddie gave to Rodolfo was a message to tell Rodolfo that he is physically stronger than him and also to embarrass him in front of Catherine. The audience of the 1940s may find it inappropriate as homosexuality was discouraged so the kiss would of brought a shocking impact upon the audience as they thought Eddie was a hero that people to look up to but instead he is turning out to be the villain that nobody likes. Miller makes the moments very dramatic by using effective stage craft, when Eddie calls the immigration burro. The phone is glowing in light now. Light is out on Alfieri. Eddie has at the same time appeared beside the phone. Being in a spotlight the audience focuses on Eddie, the audience knows what he has to say at that moment will be dramatic. The lightings emphasis on how important this scene is so the audience needs to engage. Miller uses Eddies action to create an effect on the other characters. Look, im sick and tired of it; im sick and tired of it! Beatrice has reacted very aggravated towards Eddie because of the trouble he has caused that has built up throughout the novel, she explodes with anger. Repeating the phrase shows how Eddie has pushed other close characters towards him to limit. The audience now look at him to be the opposite of a stereotypical hero; instead he is a tragic hero. Eddie tries to redeem himself by allowing Catherine freedom however he does not offer he full freedom as he still tries to prevent her from being with Rodolpho. I mean now you got a new job, you might meet some new fellas.Eddie by saying this, we see him at least trying to be the person we saw at the start of the play, but after Eddies previous actions it is too later and there is no hope for him. Eddie has never given Catherine a choice ever since she was growing up, he decides to at this time to reform himself and be the hero as the audience used to know him as at the beginning of the play. Miller follows the idea of a tragic arc which is the layout of a Greek tragedy. We see this happening when after causing his own family to turn against him, when he thought his actions were acceptable he now tries to redeem himself so we see as a hero again. Characters close to Eddie are disgraced with his actions after failing to redeem himself, so all eyes are set on Eddie as he is the one to blame for the immigration officer knocking on the door. Hes a rat. He belongs in the sewer Catherine expresses her feelings towards Eddie as she sees the man she loves being taken away. The connotations of rat are, unwanted, vermin, and horrible she says the hurtful things to him to express how angry she was towards him. Eddie is seen again to be the villain of the play, as all he has caused it upset between him and the other characters. Just before we see the end of the play, Macro gives us hints as to how it might end Hes praying in the church? Marcos last rights before he faces Eddie he does this to confess that he may die. Marco knew at this time that the only hope for this feud to end between them is if they battle it out like men. The audience at this time feel tense and anxious to what will come next knowing that something could end terribly wrong. The play ends with Eddie being stabbed by his own knife. Oh, B! hes last words as Beatrice holds him in her arms as he falls. Like almost every tragic hero conceived by man, Eddies own actions are the cause of his destruction. The knife took Marco by surprise, but throughout the play Macro is a character that is quite wise in the way he can pick up a chair with one hand using his own body weight but Eddie couldnt. When Eddie went for the lunge with the knife towards Marco, Marco deflected that lunge back towards Eddie, ending by him killing himself due to brutal strength. The audience might predict that he would die with Catherine holding him; since she was the one he was obsessing over the whole time.

Implications of the Sahelanthropus Tchadensis (Toumai) Discovery Essay

Implications of the Sahelanthropus Tchadensis (Toumai) Discovery Compared to the complete history of life on earth, human history is relatively brief. The earth is billions of years old and living organisms probably appeared some two to four billion years ago. Many different kinds of animals have been inhabiting the earth for hundreds of millions of years. Early hominids which are human like creatures are thought to have originated just 5 million years ago and modern humans around 100,000 years ago. There have been a recent discovery that is now challenging the appearance of the early hominids. In the country of Chad which is located in central Africa scientists have recently made a discovery of a hominid skull. This skull was dated back to between 6 and 7 million years ago. The discovery was led by anthropologist Michel Brunet from the University of Poitiers in France. The find was named Sahelanthropus tchadensis and is nicknamed â€Å"Toumai† which means â€Å"hope of life† in an African language. The fossil find is an almost complete skull, some teeth, and a few fragments of the lower jaw. (Bower 2002) This fossil find is completely surprising and amazing. The remains that were found represent the earliest known member in the line of human evolution. This find could be the beginning of many which could completely change our current ideas of human evolution. This pushes back the dates of human history by 2 million years. If Toumai is truly a common ancestor of humans and chimpanzees this makes the molecular clock theory wrong. The molecular clock dates the divergence of humans and chimpanzees somewhere around 5 million years ago while the Toumai discovery suggests that is was 6 to 7 million years ago. (Bower 2002) Homini... ...of the same kind. This is only one very small link in the massive chain of human origin. Scientists need to continue to search the globe and make more new discoveries to further challenge the norm and uncover the truth of our history. Sources: Bower, Bruce. Evolutions surprise: fossil find uproots our early ancestors. Science News 13 July 2002; vol. 162, No. 2, P. 19. 4 April 2004 www.sciencenews.org Brunet, Michel. A new hominid from the Upper Miocene of Chad, Central Africa. Nature 418, 145-151. 11 July 2002. 4 April 2002 www.ezproxy.ithaca.edu Paoli, Laurence. Toumai: Shaking our conceptions on the earliest steps of Hominid history. Science In Africa August 2002. 5 April 2004 www.scienceinafrica.com Whitfield, John. Oldest member of the human family found. Nature News Service/Macmillan Magazines 11 July 2002. 4 April 2004 www.nature.com

Impact Of Globalization On Urbane Culture

Culture has many meanings. As a practical human activity, it is an inherent part of both individual and collective development, from the education of a single child to the finest artistic expression of entire peoples and nations. Culture also refers to the customs of a given society, especially as reflected in its social institutions and practices, including social and political organization and religion. Even in the nineteenth century, cities at the centre of media, financial, and manufacturing networks led the global symbolic economy of the time.Cultural innovations in those days spread by means of exports of new products and models, and of images published in newspapers and magazines. It took weeks or months for these images to reach distant regions. Today, innovations travel at much greater speed via airplane, satellite and the internet. Easier import and export of culture helps ethnic groups living away from their homes to maintain their cultural identity, while exposing those i n their home countries to new cultural stimuli.In earlier years, people moved between the relatively simple spaces of home, work and neighborhood, all of which reinforced bonds based on ethnicity and social class. Networks and institutions of sociability directly shaped local cultures. Today, urban residents commute over great distances to go to work. Through television, film, the internet and popular magazines, rich and poor alike see images of affluence and modernity and compare them with their own lives.The inability to escape these multiple images and sources of information can be disconcerting and may sometimes lead to local resistance against what is termed â€Å"cultural globalization†. Access to more images and information also enriches the cosmopolitan culture of cities. The idea of using culture as a motor of urban economic growth reflects cities’ transition from manufacturing to more flexible, design and knowledge-based production.Since massive industries li ke steel and automobiles based on standardized mass production have fallen, one by one, to competition from low-cost locations, attention has focused on cultural industries – flexible industries that value knowledge, information and technology. Most cultural industries are located in cities. A dense population and concentration of skills allow them to draw upon tangible human resources, and a city’s usual history of tolerance and social diversity offers intangible sources of inspiration and experimentation. What is expected of the new global city?As noted earlier, globalization has introduced new cultures as well as fusion of old and new ones in cities. Already evident in many cities in advanced economies, these new urban cultures are likely to emerge more and more in the developing world. They provide new forms of what we may term â€Å"consumption spaces†, including fusion in their design and architecture, partly under the influence of intensified shopping all over the world. A feature of these new spaces is their enclosure, which tends to reinforce social exclusion within cities. They also, increasingly, signal the transition of a city’s status to global. Impact Of Globalization On Urbane Culture Culture has many meanings. As a practical human activity, it is an inherent part of both individual and collective development, from the education of a single child to the finest artistic expression of entire peoples and nations. Culture also refers to the customs of a given society, especially as reflected in its social institutions and practices, including social and political organization and religion. Even in the nineteenth century, cities at the centre of media, financial, and manufacturing networks led the global symbolic economy of the time.Cultural innovations in those days spread by means of exports of new products and models, and of images published in newspapers and magazines. It took weeks or months for these images to reach distant regions. Today, innovations travel at much greater speed via airplane, satellite and the internet. Easier import and export of culture helps ethnic groups living away from their homes to maintain their cultural identity, while exposing those i n their home countries to new cultural stimuli.In earlier years, people moved between the relatively simple spaces of home, work and neighborhood, all of which reinforced bonds based on ethnicity and social class. Networks and institutions of sociability directly shaped local cultures. Today, urban residents commute over great distances to go to work. Through television, film, the internet and popular magazines, rich and poor alike see images of affluence and modernity and compare them with their own lives.The inability to escape these multiple images and sources of information can be disconcerting and may sometimes lead to local resistance against what is termed â€Å"cultural globalization†. Access to more images and information also enriches the cosmopolitan culture of cities. The idea of using culture as a motor of urban economic growth reflects cities’ transition from manufacturing to more flexible, design and knowledge-based production.Since massive industries li ke steel and automobiles based on standardized mass production have fallen, one by one, to competition from low-cost locations, attention has focused on cultural industries – flexible industries that value knowledge, information and technology. Most cultural industries are located in cities. A dense population and concentration of skills allow them to draw upon tangible human resources, and a city’s usual history of tolerance and social diversity offers intangible sources of inspiration and experimentation. What is expected of the new global city?As noted earlier, globalization has introduced new cultures as well as fusion of old and new ones in cities. Already evident in many cities in advanced economies, these new urban cultures are likely to emerge more and more in the developing world. They provide new forms of what we may term â€Å"consumption spaces†, including fusion in their design and architecture, partly under the influence of intensified shopping all over the world. A feature of these new spaces is their enclosure, which tends to reinforce social exclusion within cities. They also, increasingly, signal the transition of a city’s status to global.

Love and Perfectly Good Children Essay

Wislawa Szymborska expresses a negative opinion towards love and lovers in her poem â€Å"True Love.† In the beginning, the speaker questions the value of love and appears to be very bitter towards the idea. Ultimately, she cleverly uses the lovers to show how one’s perception can be changed when they are passionate about their beliefs. Initially, the speaker questions the complete happiness of couples who seem to be in ‘true love’. The speaker states, â€Å"What does the world get from two people who exist in a world of their own? / place on the same pedestal for no good reason†¦Ã¢â‚¬  (3-5). Here, the speaker sarcastically implies: What does the world or those surrounding them (so to speak) get out of them being happily ever after in their own world, while placing each other on a pedestal for no apparent reason. These questions are intended to make the reader think about true love and its significance. â€Å"What does the world get from two people who exist in a world of their own? / Placed on the same pedestal for no good reason†¦Ã¢â‚¬  (Lines 3-5) Subsequently, the speakers discouraging statements towards love is shown through the choice of words in the questions asked. The speaker questions, â€Å"True love. Is it really necessary? /†¦Perfectly good children are born without its help. /†¦It comes along so rarely.† (27, 30 and 32). Here, the speaker suggests: Is true love even really necessary? For, perfectly good people exist without being conceived through love; as it happens almost ever. These statements are meant to convince the reader as to why true love should be an afterthought as it isn’t needed to bear children and life goes on just fine without it. â€Å"True love. Is it really necessary? /†¦Perfectly good children are born without its help. /†¦It comes along so rarely.† (Lines 27, 30 and 32) Lastly, the speaker’s contradictory choice of words in the final stanza tells us that s/he ratifies the idea of true love. She professes, â€Å"Let the people who never find true love/keep saying that there’s no such thing.† (33-34). Here, the speaker affirms that despite all of her negative point-of-views previously stated, the more one doesn’t need to believe in love†¦the stronger in reality they confirm its importance. This statement tells the reader that, regardless of her disparaging tone, if one believes that true love does not exist before experiencing it or due to a bad experience, they’ve only lost their chance or more less confirmed their worst fear of true love actually existing. So from this perspective, ignorance is bliss because it is possibly better to be happy and clueless about love than to be sad because of the irreversible pain it might cause. â€Å"Let the people who never find true love/keep saying that there’s no such thing.† (Lines 33-34) Confusing is the best way to describe Szymborska’s poem. The speaker’s tone is very critical and bitter, s/he uses harsh language such as â€Å"deceptive† (Line 18), â€Å"outrage† (Line 11†) and describes love as a â€Å"plot† (Line 21) to emphasize her argument. In this way, s/he leads the reader to believe that she does not believe in, nor support the idea of true love.

The Monarchs Royal Assent

The Monarchs Royal Assent In Canada, royal assent is the symbolic final stage of the legislative process by which a bill becomes law.   History of Royal Assent The  Constitution Act of 1867 established that the approval of the Crown, signified by royal assent, is required for any bill to become law after passage by both the Senate and the House of Commons, which are the two chambers of Parliament. Royal assent is the final stage of the legislative process, and it is this assent that transforms a bill passed by both Houses of Parliament into law. Once royal assent has been given to a bill, it becomes an Act of Parliament and part of the law of Canada. In addition to being a required part of the legislative process, royal assent has strong symbolic significance in Canada. This is because royal assent signifies the coming together of the three constitutional elements of Parliament: the House of Commons, the Senate and the Crown.   The Royal Assent Process Royal assent may be given through a written procedure or through a  traditional ceremony, in which Members of the House of Commons join their colleagues in the Senate chamber. In the traditional royal assent ceremony, a representative of the   Crown, either the  governor-general of Canada  or a  Supreme Court justice, enters the Senate chamber, where the senators are in their seats. The  Usher of the Black Rod  summons members of the House of Commons to the Senate chamber, and members of both houses of Parliament witness that Canadians wish the bill to become law. This traditional ceremony must be used at least two times per year. The representative of the sovereign consents to the enactment of a bill  by nodding his or her head. Once this royal assent is officially given, the bill has the force of law, unless it contains another date on which it will go into effect. The bill itself is sent to Government House to be signed. Once signed, the original bill is returned to the Senate, where it is put into the archives.

How to Make Real Snow at Home

How to Make Real Snow at Home If you want to see or play in snow, but Mother Nature wont cooperate, you can take matters into your own hands and make snow yourself. This is the homemade version of real water ice snow, just like the snow that falls from the sky. What You Need You need the same things found in nature: water and cold temperature. You turn the water into snow by dispersing it into particles small enough to freeze in the cold air. WaterPressure nozzle There is a handy snowmaking weather tool that will tell you whether you have the proper conditions for making snow. In some climates, the only way youll be able to make snow is if you chill a room indoors (or you can make fake snow), but much of the world can make real snow at least a few days out of the year. Pressure Nozzle You have several options: Pressure washer (own or rent, use a fine mist nozzle or use a nozzle specially designed for producing snow)Snow cannon (not affordable to buy, but can be rented)Garden hose with a snow attachment (makes less snow per hour than the pressure washer or snow cannon, but still fun) Note: Simply using a mister attached to a garden hose isnt likely to work unless the temperature is very cold. The mist particles may not be small enough or far enough apart to turn water into ice. Fine Mist All you need to do is spray a fine mist of water into the air so it cools down enough to freeze into water ice or snow. Theres a technique to this. Spray at Angle   Youll get much better results if you point your water spray upward at a 45-degree angle rather than straight up. The amount of air you get mixed in with the water makes a difference, so you want to maximize this. Water Cold as Possible You also want the water to be as cold as possible, so water from a cold stream will work better than, say, heated water from your home. Impurities Are Good The water from a stream or river also has the advantage of containing impurities which can act as nucleation sites to provide a surface on which snow crystals can grow. Add a Nucleating Agent Its also possible to add what is called a nucleating agent to your water which will accomplish the same purpose, essentially allowing you to produce snow at slightly warmer temperatures. The nucleating agent typically is a non-toxic polymer. Snow machines for ski resorts can use this effect to make snow even if the temperature is above freezing. If your water supply naturally contains a bit of sand, this can help you make snow at slightly warmer temperatures than if you were using pure water. You need only a few hours of cold to make a lot of snow. The snow will last longer if the temperature stays cold, but it will take a while to melt even if it warms up. Use Boiling Water If the temperature outdoors is extremely cold, its actually easier to make snow using boiling hot water than cold water. This technique works reliably only if the temperature is at least 25 degrees below zero Fahrenheit (below -32  °C). To do this, throw a pan of freshly boiled water into the air. Easy and Spectacular It seems counter-intuitive that boiling water would readily turn to snow. How does it work? Boiling water has a high vapor pressure. The water is very close to making the transition between a liquid and a gas. Throwing the boiling water into the air offers the molecules a lot of surface area exposed to freezing temperatures. The transition is easy and spectacular. Protect Hands and Face While its likely anyone performing this process would be bundled up against the extreme cold, take care to protect your hands and face from the boiling water. Sloshing a pan of boiling water onto skin by accident can cause a burn. The cold weather numbs skin, so theres an increased risk of getting a burn and not noticing it right away. Similarly, at such a cold temperature, there is a significant risk of frostbite to exposed skin.

Statistics Assignment Example | Topics and Well Written Essays - 500 words - 2

Statistics - Assignment Example of industrial explosion and were under age 40 at the time of accident had heightened concentrations of dioxin in their blood and that each tenfold increase in dioxin level was associated with a doubling of the risk of breast cancer. a) In any experiments, it is required to select sample randomly. If the subjects were not assigned to the diets randomly instead of letting people pick what they wanted to eat, than there may be possibility of adding another factor (in this case subject’s choice) introduced to the experiments. Thus, it will be difficult to say which factor influenced blood pressure more effectively, subject’s choice what they wanted to eat or diet type. Randomization allows us to equalize the effects of unknown or uncontrollable sources of variation. It does not eliminate the effects of these sources, but it spreads them out across the treatment levels so that we can see past them. c) The researchers need the control group because than they will be able to compare the blood pressure of groups based on different diet only. If the DASH diet group’s mean blood pressure was lower at the end of the experiment than at the beginning that would only mean that DASH diet lowered the blood pressure. This will not mean how much effective DASH diet is compared to other diets. Further, in an experiment it is required to control sources of variation other than the factors we are testing by making conditions as similar as possible for all treatment groups. d) We would need additional information standard error of difference (or sample standard deviations and sizes for DASH diet group and control group) in order to decide whether an average reduction in blood pressure of 6.7 points was statistically