Question Drama reflects real life on stage Essays - Fiction, Film

Question: Drama reflects real life on stage Text: The Twelve Angry Men Drama has been used to reflect real life experiences and issues on stage. This is exemplified in Reginald Rose's play "Twelve Angry Men" which depicts the different types of prejudice within the American subconscious symbolized through 12 jurors who must make a judgment on a boy accused of murder. The anonymity of characters in the play generalises the American population, based on the Juror's personality, dramatically reflecting the common mentalities of Americans during the 1950's. Rose cleverly uses Juror 8 to persuade the rest of the Jury that the boy is not guilty beyond reasonable doubt, whilst simultaneously convincing the audience as well. Rose's diligently concocted characterizations of jurors allows us to understand the significance of the drama, which accurately reflects real life on stage. The dramatization of prejudice in the play "Twelve Angry Men", is demonstrated as interference in the course of justice. This is highlighted in the introduction where all jurors enter the jury room with preconceived notions, ready to convict the defendant due to his social status rather than evaluating the evidence presented itself. The 4th Juror's stereotypical statement, "slums are breeding grounds for criminals," may be statistically justified, however, this is not actual proof that the suspect is guilty, demonstrating the capability for prejudice to cloud judgement. Rose also portrays personal prejudice as impacting on an individual's judgements, which is exemplified through Juror 3's personal bias towards his own son who left him. This transforms into a generalised prejudice against the younger population, thus creating tension. The 8th Juror's statement, "prejudice obscures the truth," suggests that that he is aware of the impact of prejudice on logic, and hence a fair verdict to bring justice. This problem is used to dramatically reflect the issue prejudice, distrust and depression within the American population during the Cold War. The unusual anonymity of the characters dramatically allows the audience to judge characters for who they really are and reflect their personality to real life people. Rose removes any detailed plot descriptions, names or specifics in the play. Jurors are simply referred to as a number, the defendant as the accused' and even the witness as the old man', illustrating that the function of the jury is more important than the details of their identity. This anonymity of characters allows Rose to break them up into less specific individuals that symbolises a cross section of the American population, as each Juror has a different perspective and looks at the evidence from different angles. As the play develops, we are immediately able to make some conclusions on characters based on the information provided. The anonymity of the play hence dramatically reflects American society, and due to no specifics of characters we are forced to make similar substitutions based on personal experien ce. During the play we are given many different perspectives of the case, which are given to seed doubt within the audience's mind. However, these perspectives can also be obscured by personal matters that are irrelevant to the case, as the jury are not trained in legal judgement. This is exemplified in the statement by Juror 7, "This better be fast, I got tickets to a ball game tonight," which highlights his open lack of interest in the verdict of the jury. In contrast to this, Juror 8 fully focuses on the case and throughout the course of the play, aptly examines, questions and manipulates evidence and other opinions. The discomfort of the situation at the beginning of the play is illustrated through the pathetic fallacy of the hot and sticky atmosphere, but this also portrays the depressing atmosphere surround the time in the 1950's. However, this weather soon changes into a storm, reflecting the tension and conflicting moods within the jury room. Juror 8 finally succeeds in pe rsuading the rest of the jury, thus successfully changing the audience's mind as well. The play concludes with the defeat of prejudice and irrationality through justice, however the accuracy of the final verdict is not demonstrated by Rose. This doubt at the conclusion of the play plagues the psychologies of the audience due to the ambivalence of whether they were right' in

Different Strokes for Different Folks essays

Different Strokes for Different Folks essays Different Strokes for Different Folks New England and the Chesapeake region were settled chiefly by Englishmen, yet the two regions could not have turned out any different. Virginia and surrounding colonies had it rough in settling the territories, bringing primarily men of a mature age. New Englanders were in search of a new home and brought families, women, and children with them. They also had fewer conflicts and signed plenty of documents dedicated to peace and prosperity, as opposed to their neighbors to the south. The similarities dont end here, however, they only multiply. The Chesapeake Bay area was settled with the understanding that it would not be an easy task. Men were a majority on the ships and women and children were few and far between. Slaves were also on board because everyone headed this way needed labor to seek their fortune. Few were interested in raising a family, rather search for gold, or gain vast amounts of land to grow multitudes of crops. These individuals found many hardships when they came ashore. In one account, half of the villagers died over the first winter. Also, there were ample fights between the colonists and locals. Fights, quarrels, and other such benevolence could have been from the large quantities of prisoners sent there to empty the English prisons. This is all a huge leap from the way of life that the northern colonies established. New Englanders came for reason completely different than those of the Chesapeake region. Northerners had intentions of starting a family, seeking religious freedom, and simply starting over. Some were persecuted in their homelands, and believed they were chosen by god to live in the New World. These people were also very humble people. They respected the local Indians and sought their help in living off the land. Some even paid them for the land they settled on. Along with their hospitality came their sense of politics. Many docu...

A past future city vision, explaning what the main ideas were and Essay

A past future city vision, explaning what the main ideas were and commenting on the possible sucess it may or may not have had as a sustainable - Essay Example d and therefore it is not surprising that a common theme in the visions of future is addressing the challenges of growth and development of cities, without endangering the surrounding environment and employing sustainable natural resources. Built into these visions were attempts to address the issues of production of resources, its consumptions, and the threat of rising sea levels due to global warming (Ng, 2008). The vision for Washington D.C. includes the use of the military forts surrounding the city that defended it in the past to bring life to the city in the future. Sinuous towers are envisaged on these forts to enable harvesting of wind, solar energy and rainwater and the production of food through the use of hydrophonic farms. Food supply will be further augmented through communal farming on the greenway that will be created in the present avenues of the city (Ng, 2008). Addressing transportation requirements in a unique way is seen in the vision for San Francisco, based on the use of Hydro-net consisting of walls made of carbon nanotubes. The underground Hydro-net is a network that transports individuals, vehicles, water and energy in the city. The Hydro-net also acts as a resource production system with hydrogen-producing algae farms, fog catchers to collect air moisture, and water extractors to collect fresh water from an aquifer below the city (Ng, 2008). For Atlanta the vision includes the reintroduction of treated water from the old sewage system around the ground to produce a natural waterway that flows through city. The surrounding forests would be allowed to creep into the city reducing the city grid and creating new hybrid environments. The idea here is to restore the natural systems to offset the burden of the man-made infrastructure of the city (Ng, 2008). While such a competition may result in what may appear as far fetched solutions for the development, they do provide ideas and solutions for the man made problems in the cities. An example

The constitution Essay Example | Topics and Well Written Essays - 500 words

The constitution - Essay Example fectual in running a national government, so a combination of factors further pointed to the need of a stronger government than the articles of confederation provided. Congress could not provide protection for local industries because it did not have the powers, and so America’s manufacturing had failed to grow. Settlers in the west demanded a more aggressive policy on land cessions and wanted more to be done to protect them from Indian attacks2. Merchants wanted a government that could get them advantageous trade agreements abroad. While changing the Articles was not viewed as urgent among the southern and Mid-Atlantic States, their leaders too appreciated that free navigation of the Mississippi River and a solution of the dispute with Spain needed a response from a stronger government. Before the new constitution, only white males who owned property were allowed to vote. The new constitution, however, would allow all citizens to vote. It was also going to abolish slavery, meaning the propertied white would have to find an alternative source of labor3. The preamble of the federal constitution has the words ‘we the people’. These words can be interpreted to be meaning all the citizens of America. This is not true though, what it actually meant is that it excluded slaves, poor white males, women and Native Americans. These groups of people were not allowed to vote, for example. It denied congress the power to abolish the slave trade before 1808. It also required that fugitive slaves should be returned to their masters. The unrepresented groups in the American constitution include the Hawaiians, the Indians and many other ethnic minorities living widely as small minorities. A constitutional republic meant that whereas other people enjoyed the privileges brought about by the new constitution, the unrepresented did not since they were not properly recognized by the constitution. For example, the unrepresented people lost the right of suffrage. Though they

Report on Ethical Decision-Making Essay Example | Topics and Well Written Essays - 500 words

Report on Ethical Decision-Making - Essay Example Critics point to â€Å"Big Pharma† manipulating research in order to increase their profit margins. These are all very important and major contemporary issues that must be addressed when we look at a topic as broad and profound as pharmaceuticals and pharmacology. Questions I asked myself included: Do pharmaceutical companies have duties and obligations to society? Is pharmacological care a right rather than a service to be sold on the market place? These are obviously very emotionally engaging questions because they involve life and death. It was very hard for me to come to a conclusion about them. The best illustration of this ethical dilemma.is the question of HIV/AIDS in Africa. Do American drug companies have the responsibility to provide very cheap drugs to people in Africa who are infected. If the drugs were given to someone for free they might live longer—but since they don’t have money they certainly will die. I wrestled with this one long and hard. This aspect of the debate really illustrates the idea of a social obligation to people above and beyond the notion of a profit margin. Critics of course will say that if drugs were given away for free there would be no money for research and so more people would die because there would be no drugs for their disease. This too would be a serious problem. In the end I decided that it was right for pharmaceutical companies to advertise and sell their products for a profit. It took a lot of time and consideration for me to reach this conclusion. As of 2008, the United States is the world leader in medical research, especially in pharmaceutical development. American companies create most of the world’s most innovative drugs and the FDA stamp of approval is sought by drug makers worldwide because this organization is so respected. This is an interesting point and one that may contradict in some sense the idea of Big Pharma having a social contract. The only developed

Principles Of Additive Manufacturing

Principles Of Additive Manufacturing Additive manufacturing (AM) is a general term for all technologies that produce parts by layer addition of material at the micron level, to achieve the required shape, besides of metal removal technique which is traditional subtractive process. During research period, AM the layer by layer manufacturing terminology has been standardised by the American society for testing and materials (ASTM) committee F42 on additive layer technologies. In the beginning AM technologies were restricted because of commonly accepted leading name Rapid prototyping (RP) for the production of parts and prototypes, which was the term used for many years to describe all layer additive manufacturing processes. Advancement in the material, process and system hardware cleared that the parts could be manufactured with an adequate mechanical property to let for further applications. This allowed the production of end use models with layer additive technologies, so rapid manufacturing (RM) was adopted which distinguish the functional nature of the models produced from the prior RP parts and prototypes. Recently AM is used generally and RM and RP are only use to illustrate the particular application of AM technologies. 1.2.1: Principles of Additive Manufacturing AM technologies fabricate models by fusing, sintering or polymerisation of materials in predetermined layers with no needs of tools. AM makes possible the manufacture of complex geometries including internal part detail that are approximately not possible to manufacture using machining and moulding processes, because process does not require predetermined tool paths, draft angles and under cuts. In AM the layers of a model are formed by slicing CAD data with professional software. All AM system work on the same principle; however, layer thickness depend upon parameters and machine being used and thickness of layer range from 10Â µm up to 200Â µm. Layers are clearly visible on the part surface in AM operation, which controls the quality of final product. The relation between thickness of layer and surface orientation is known as staircase effect. However, thinner the layer is the longer the processing time and higher the part resolution. Layers in AM are built up at the top of the previous one in z axis. After layer gets processed the work platform is dropped down by the single layer thickness in z axis and the fresh material layer is recoated differently for number of other methods. In resin based system traversing edge flatten the resin, in powder based system deposited powder is spread using roller or wiper, in some system the material is deposited through a nozzle which deposits the required material. Because recoating time is even longer than the layer processing time. For that sake multiple parts are building together in the time of single material recoating build. Different softwares are available to position and orient part so that maximum number of parts can be built together. Available softwares are VISCAM RP and Smart Space used in MAGICS. Some delicate parts produced through AM technologies need a support structure to hold the part in work platform during the build process. All AM machine uses different support structure that are designed from specific material for effective use of build parts. Commonly used support structures are thin small pointed teeth to minimising the part contact so that they can be removed easily with the hand tools. 1.3: Rapid Prototyping Rapid prototyping processes are a relatively recent development, accurately described as layer manufacturing processes. The first commercial RP machine was released at the AUTOFACT show in Detroit (USA) in November 1987 by the company named 3D systems. The process begins with creating a 3D model using CAD software and it is identical for all built techniques. The model is then convert in to Standard Triangulation Language (STL) format, this format shows the 3D surfaces as an assembly of many planner triangles. At next stage STL file slice the 3D model in to layers. As we know the additive manufacturing is gradual process in which parts are manufactures through layers and each layers are joined and process continues until the final part formed. Post processing is usually required to improve the surface finish of the product. RPs additive nature allows is to create parts with complicated internal features which is not possible by other means like hollow areas and undercuts for that these parts sometimes supports are necessary. (palm, W. (1998, May). Rapid Prototyping primer. Retrieved November 4, 2010, from Learing factory Rapid prototyping home page: http://www.mne.psu.edu) RP products often have low functionality and commonly used as a visual aids with in product development. However material selection decide the prototype testing for short term functionality parts. Most of the RP materials are polymer based, which is for limited part functionality. Although for little part functionality paper and starch based materials are used. RP modernised the product development with an ability to produce single and multiple physical models, facilitating the reduction of product development cycle time ranging for different industries. 1.3.1: Rapid prototyping technologies There is a huge number of experimental RP technologies either in development or used by small groups of individuals. RP techniques those are currently commercially available including: Stereolithography (SLA) is the first RP technique developed by 3D systems in 1987. SLA builds single layer at a time by tracing beam of laser on the vat of liquid UV curable photo polymer resin. UV light strikes the surface of the polymer resin and solidify the single layer of resin, when one layer is cured the built platform is dropped down by single layer thickness (Schmitt, Q. L. (2005). Rapid prototyping in dentistry: technology and application. Rapid prototyping in dentistry: technology and application , 11-13,42,44). A resin filled blade sweeps over the cross section and fill it with fresh material for further curing at the top of the previous layer, process continues until the model is produced. Material self adhesive property bond each layer and form a complete 3D model, fabricated part is cleaned in dawanol resin, alcohol and then cured in a UV oven. (wikipedia. (2010). wikipedia free encyclopedia. Retrieved November 1, 2010, from wikipedia web site: http://en.wikipedia.org/ wiki/stereolithography) Selective laser sintering (SLS) uses powdered materials. This is one of the systems major advantages that a part could be built in any fusible powdered material. SLS technology was developed in Texas University, which was commercialized in 1993 by company named DTM. In 2001 the DTM were bought out by 3D systems. (http://www.jharper.demon.co.uk/rptc01.htm) This technology works by selectively sintering fine powder materials directly using an infrared (IR) laser from CAD. Numbers of thermoplastic materials are processed in SLS like nylon (polyamide) for rapid tooling application, aluminium filled nylon, polystyrene for sacrificial pattern in investment casting and gas filled nylon. Part produced through this process used as functional model as well as visual prototypes because of good mechanical properties. However as compared to traditional tool steel the part had poor mechanical properties, so material required post processing to form dense models, thus it was very difficult to control the part accuracy because of introduced stresses in processing stage. With the combination of EOS GmbH and Electrolux a special alloy powder was developed, which did not develop shrinkage distortions. Moreover introduction of fibre laser technology allowed the introduction of Selective laser melting (SLM) since the fibre laser allowed the sintering of metals that were completely melted in to dense part with no need of post process infiltration. Numbers of other technologies have been commercialised since 1991 such as laminated object manufacturing (LOM), fused deposition modelling (FDM), 3 dimensional printing (3DP). Recent technological availability of RP is increased with material diversity, which increased the efficiency of creating physical prototype in advanced product development. 1.4: Definition of Rapid Manufacturing Firstly, it is essential to give a definition of rapid manufacturing. The way that several parts are manufactured will change in the future. RM has been explained as the use of a CAD-based automated AM process to construct parts that are used directly as finished products or components (Hopkinson et al. 2006, p. 1) Since with the time change, the research on AM technologies and materials has advanced and the feasibility of fabrication of functional, low volume parts are increasingly in many industries. Many industries are examining the available technology and investigating the possibilities of design to increase the high functional component and to reduce product to market time. A key benefit of RM approach claimed that it proposes the opportunity of mass customization, however can be cost effective for individual short run part, clearing conventional designing constraints of manufacturing processes. RM greatly minimised wastage of raw material as compared to subtractive process, so got popular in aerospace industry, where expensive metal alloys are extensively used. The grade material such as titanium, ABS, nylon and aluminium has been the important part in the progress of RM technologies. (http://www.hse.gov.uk/horizons/rapidmanufacturing.pdf) The introduction of RM is not as simple as it first appears, although research in RM technologies and application are progressed by RP. The evolution is still in progress to link RM from research to actual manufacturing for that number of matters to be addressed that prevail need explanation and consensus before it can happen. RP produced prototype were not considered for product repeatability and quality measures. Since products of RM have proposed functionality, industrial certification and the requirements include material control, accuracy, speed, surface finish and part repeatability, so that RM is successfully applied in many industries including medical, automotive and aerospace to produce low quantity of small, high value parts with complex geometries that is difficult through conventional methods. (http://www.rm-platform.com/index2.php?option=com_docmantask=doc_viewgid=129Itemid=5) In future, RM technology addition in industries can offer small complex design feature parts that ever imagined with great manufacturing facilities and the extension of approach. Development of advanced materials and equipment enable the fabrication of complex product by directly manipulating the matters on a molecular scale. 1.5: Selective laser melting (SLM) 1.5.1: SLM background Selective laser melting machine was first introduced by Fockele and Schwarze (FS) of Germany in 1999 with the support of Fraunhofer institute of laser technology that was steel powder based SLM machine. Later in 2004 first SLM machine named Realizer 250 SLM was released commercially after FS coped up with MTT (MCP tooling technologies) and in 2005 high resolution machine named SLM Realizer 100 was released. Since the release of the MCP Realizer SLM, other manufacturer such as Concept laser and EOS released machine with different process named Laser curing and Direct metal laser sintering respectively. Concept laser (GmbH) first released M3 Liner and M1 Cusing in 2001, later they released another machine named M2 Cusing to produce reactive materials like titanium and aluminium alloys. EOS released the machine named EOSINT M 270 DMLS in 2003 and termed as the most common machine for direct metal fabrication. In 2008 MTT and 3D systems proclaimed a distribution agreement for the rights to distribute SLM machines in Americas and Japan. In 2008-09 new version of SLM was released by MTT named SLM 250 and SLM 125. 1.5.2: Basic principles of SLM SLM is a powder based additive manufacturing process that permits attaining 3D functional parts from a CAD data. SLM follows the same process route as SLS, where complete melting of powder occurs instead of sintering or partial melting. Process begins with the deposition of thin layer of powder thickness ranging from 50Â µm to 75Â µm across a substrate platform. A high power fibre laser scans the powder surface, the generated heat melt the powder particles and form molten pool. Once the layer has been scanned, the platform drops down by single layer thickness in z axis and the fresh layer of powder is deposited and the process is repeated until the entire built is completed. Loose powders are removed once the fully dense part is complete. SLM parts must be completed in inert gas atmosphere such as argon to remove oxygen from the building chamber. Supports like thin teeth shaped are needed to secure hanging features due to shrinkage of material solidification. The substrate is removed from the build chamber once the process gets complete and supports are removed carefully. SLM termed as the most viable techniques for direct fabrication of complex featured part of metals. SLM can permit the design optimization and production of the complex functionalities beyond the capabilities of traditional techniques, which is possible because of accuracy, versatility and the laser beam spot size. The small laser spot size minimizes the area to be melt enabling the manufacturing the part of high resolution. However, to be positioned SLM in RM category as a general method to achieve greater recognition in companies, methods and development need to be changed to perform and prove itself as being reliable, repeatable and cost effective production process. SLM also known as freeform fabrication process and capable to build thin wall complex features models of high resolution and extends its capabilities than the conventional processes such as customised medical implant especially dental crown and bridge frame work, tooling inserts with conformal cooling channel and functional models. SLM concerns primarily turn around the application of high powered fibre laser to generate high temperature to completely melt the powder, surface roughness is the main concerns of SLM because of high heat input causes material vaporisation and generation of spatter that subjected by melting and re-solidifying. But SLM parts cover committed microstructure parts and material properties that make possible this technique for the application. Benefits of SLM: Parts produced in this process are nearly 100% dense and have same mechanical strength as the original material Almost no powder material is wasted, the loose powders which was not solidified can be reused SLM offers minimum time to market, exact shape generation without an expansive moulds, process flexibility and great utilization of material SLM powder bed technology permits cheap and fast powder metallurgy. The alloys to be tested can utilized straightly with in the prototyping apparatus and alloys can easily accustomed with the change of elemental ratio of powders Drawbacks of SLM: SLM is regarded as the high temperature gradient, which causes thermal stress build up and rapid solidification so coarse to grainy surface finished parts are produced The inadequate availability of some materials in powder form restricts the range of material for processing. Process should be optimised for available material (Selective laser melting, 10 December; http://raproto.com/?cat=31, accessed on 25/5/2011 and http://www.mtm.kuleuven.be/Onderzoek/a2p2/researchtopics/SLM, accessed on 26/5/2011) 1.5.3: SLM materials SLM technology worked with all possibly relevant metals for part production. Process starts with identifying the physical behaviour of material being used with microscopic level of process understanding. In order to develop technique, the main quality aspect of parts being produced includes surface roughness, high functional strength, accuracy, density, hardness, residual stresses have to be observed before applied for the industrial applications. SLM system always develops parts with variety of materials and new ranges in which material property is easily changed with the property requirement with changing the mixture ratio. The range of materials are used that improved the new work powders such as tool steel, stainless steel, titanium alloy, aluminium alloy, cobalt chrome and inconel. (http://www.mtt-group.com/data/pdf/extract/0413-MTT_2pp_SLM_A4_%20Flyer_v1.pdf) Materials are described below according to property, alloy and applications: (http://www.xyzinnovation.com.au/assets/slm-brochure_290709.pdf) Titanium: Mechanical properties: High strength, low thermal expansion, high corrosion resistance, excellent machinability and bio compatibility and low weight. Alloys: Pure titanium, Ti-6Al-7Nb and Ti-6Al-4V Applications: Medical implants, jewellery and design, F1 motor sport and aerospace Cobalt chrome: Mechanical properties: High strength, excellent corrosion resistance and bio compatibility and high toughness Alloy: CoCr ASTM F75 Applications: medical implant, dental and high temperature Stainless steel, tool steel: Mechanical properties: High toughness, hardness and corrosion resistance and excellent machinability Alloys: 316L stainless steel, H13 tool steel, 17-4PH, 50CrMo4, CrNiMo 13-4 and M333 Applications: medical implants, spindle and screws, plastic injection moulds and maritime Aluminium: Mechanical properties: Excellent alloying properties and processability and low density Alloys: Al-Si-10Mg, Al-Si-12Mg, Al-Si9-Cu3, Al-Si-7Mg and Al-Mg4 Applications: Aerospace, automotive, consumer goods Inconel: Mechanical properties: Good mechanical strength, excellent corrosion resistance, outstanding welding ability and good creep rapture strength up to 700C Alloys: Inconel 718 and Inconel 625 Applications: Aerospace, gas turbines, space shuttle and crafts, nuclear reactors and rocket motors Integration of SLM in production systems: Process chain Function SLM process chain Part Finish (Machining) Part Design Process Strategy Process Control Process Preperation Designed for optimized Part orientation built strategy online defect Interface for Functionality (quality/ build time) -built parameters detention machining (light, weight, -support structure -under cuts etc -close loop control energy efficient etc ) (www.materialscluster.lu/content/download//Wilhelm_Intermat2011.pdf, accessed on 30/5/2011) SLM machines: SLM50 Realizer: Worlds first SLM desktop machine to produce quickly and extremely accurately manufacture functional dental parts based on CAD data. It is well appropriate for dental laboratories and similar environments for the production of bridge and crown frame and brackets. This machine is capable to produce 100 parts/ months. SLM50 designed a component with height up to 40mm and diameter up to 60mm. (http://www.industrialnews.org/2011/03/worlds-first-slm-desktop-machine-dental.html#ixzz1NtOkViL9) SLM50 specifications Construction volume Platform diameter 70 mm, max. construction height 40 mm Thickness of layers 20-50 ÃŽÂ ¼m Laser type Fibre laser 20 to 120 W Power supply 16A, 230V Power consumption 1.0 KW Argon consumption approx. 30 Liter/h Dimensions W800 x D700 x H500 mm Weight approx. 80 kg Software ReaLizer Control Software Materials Cobalt Chrome, Stainless Steel 316 L, gold-, silver-, palladium-, titanium alloys (http://www.progold.com/GB/Files/Realizer.pdf) https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhfTzDKwjcODgbhyv8IOL2RGpdjGYtFin3nD4O-pGP-PNoUAPQxV24s6mwP1UBEXUGvHeuKrSeQidu8KuAFnRQX5DQkHfFKnr5NwNuconncqnLdcHePn3WfI6UIhmfcgA_STNk9KzJB0REZ/s1600/SLM-50-1024682.jpg (http://www.industrialnews.org/2011/03/worlds-first-slm-desktop-machine-dental.html) SLM100 Realizer: Machines capability to design a component with 100mm high cylindrical construction area with 125mm diameter, because of the dropped laser spot size to 20Â µm. The machine can produce parts with delicate features, high surface quality and maximum wall thickness. SLM100 is appropriate for dental laboratories or related environments. SLM100 specifications Construction volume Platform diam. 125 mm Max. overall constr. height 100 mm Layer thicknesses 20-100 ÃŽÂ ¼m Laser type Fibre laser 20 to 200 W Power supply 16A, 400V Power input 1.5 kW Argon consumption app. 35 l/h Dimensions W900 x D800 x H2400 mm, SLM100A additional display support arm Weight 500 kg Software ReaLizer control software Materials Tool steel H 13, titanium, titanium V4, aluminium, cobalt chrome, stainless steel 316 L, Inconel, Gold, ceramic materials under development (http://www.realizer.com/en/wp-content/themes/realizer/ReaLizer.pdf) (http://www.twi.co.uk/content/laser_slm.html) SLM125: The SLM125 machine presented with a range of laser from 100-200W with 30mm laser spot size diameter. This machine is capable to built pattern geometries of 200Â µm. Surface finish is controlled by laser scan approach, however build speed and surface finish is majorly depends on material that to be processed such as tool steel take more time than the aluminium and titanium. For fully dense part the both parameters surface finish and build speed should range from 15-30Â µm and 5-200cm3/hr respectively. (http://www.sme.org/cgi-bin/find-articles.pl?ME09ART20ME20090401SME) This machine has been designed for the simplicity to the users with in a industry with touch screen features, which cleans down the process. Robustness of the machine has given precedence to the adopters. The recoater blade used in this system is soft and carefully designed to reduce consumable cost by rotating same blade many times before replacement, and low filter element causes low gas consumption, results machine reliable and minimum in cost to users. SLM125 specifications Construction volume 125mm x 125mm x 125mm (x,y,z) Layer thicknesses 20 to 100ÃŽÂ ¼m Laser type Fibre laser 100-200 W Power supply 16A, 400V Power input Argon consumptionm Dimensions Weight Software ReaLizer control software Materials Tool steel H13, titanium , titanium V4, aluminium, cobalt chrome, stainless steel 316 L, Inconel (http://www.mtt-group.com/data/pdf/extract/0413-MTT_2pp_SLM_A4_%20Flyer_v1.pdf) MTT SLM25 (http://develop3d.com/profiles/box-clever) SLM250: This machine measures construction area of 250ÃÆ'-250ÃÆ'-250mm. The space in the processing area can be used to produce maximum number of parts with loading numerous parts at the top of each other. SLM250 is equipped with high power laser up to 400W with an automated filter machine to remove and recycle loose powders from the processing area. High part output makes it appropriate for industrial manufacturing process. SLM250 specifications Construction volume 250 x 250 mm , maximum construction height 220 mm Layer thicknesses 20-100 ÃŽÂ ¼m Laser type Fibre laser 100, 200 or 400 W Power supply 16 A, 400 V Power input 2.5 kW Argon consumption app. 70 litres/h Dimensions W1800 x D1000 x H2200 mm w/o sieving machine Weight 800 kg Software ReaLizer control software Materials Tool steel H13, titanium , titanium V4, aluminium, cobalt chrome, stainless steel 316 L, Inconel (http://www.realizer.com/en/wp-content/themes/realizer/ReaLizer.pdf) http://www.renishaw.com/media/img/gen/8a0166f5acc64a4190c81957ffe11b05.jpg (http://www.renishaw.com/en/renishaw-acquires-mtt-investments-limited14897) D1: (http://doc.utwente.nl/52914/1/Wa1025.pdf) D2: (http://pic.sagepub.com/content/220/6/857.full.pdf) D3: (http://www.meditech.cf.ac.uk/pages/Individula%20Meetings/15th%20Nov%202007/presentations/R%20Bibb%20-%20PDR%20-%20ARUP%20Nov%202007.pdf) SLM 125 machine run: SLM 125 machine operated in the following manner: Turn on from the back- MTT 125 screen showed up- Tap on the screen- Login with the user name MTT2- Tap light (light opens)- Tap to open the door- hold reset and open the door Wiper reset: Tap to wiper and elevator on the screen- find wiper home- tap to substrate and set thickness to 0- press Esc- hold reset and open the door. Tap to wiper and elevator- find wiper home- Go to FWD POS- then unscrew the wiper arm from both ends To draw material holder or wiper tension: unscrew both the nuts placed at the ends with pressing at the top. Attach back both the wiper tension and wiper arm to their respective positions- shut the door Before placing the platform in the machine , first measure the base plate with vernier calliper then Tap to wiper and elevator- find wiper home- tap at substrate and set the thickness to 14.5- tap at table auto (it will built)- Tap at set datum- find table home. Go again- substrate set to 0- Go to top POS- Tap at Go to Centre to position wiper at the centre C:UsersP10507465DesktopWiper_tension[1].JPG Lift wiper and place paper then tight it. Clockwise rotation of screw to loose and anticlockwise to tight it. Later paper is removed. Just ensure that you should put the same pressure during screwing. After setting the wiper arm at the paper sheet thickness- close the door- tap to wiper and elevator- find wiper home To clean filter assembly: Remove both caping placed at the top and bottom and do not forget to remove the rings- unbolt the holder- remove the filter (twist and draw)- clean the chamber- push filter to attach- bolt it C:UsersP10507465DesktopFilter_Assy.JPGC:UsersP10507465DesktopFilter_removal.JPG Tap to wiper and elevator- find wiper home- set datum- Dose to 3- Go to FWD POS- open with holding reset button. Close the door- find wiper home- Esc- select- auto (safe change filter valve- yes)- auto operation starts- click ok- Isolate change filter- confirm. Operation or part building starts and it logged out automatically after finishing the operation Login again with user name MTT2- tap to wiper and elevator- find wiper home- Go to up- Esc- open the door Cleaning: Slowly remove the powder with the brush- later hover it to clean properly. Unscrew the base plate- Brush again not to waste powder. Close the door- wiper elevator- find wiper home- Go to FWD POS- Esc- open the door holding reset button Unscrew the wiper plate and clean- the red strip on the wiper arm turns black at worked portion means damaged. Unscrew material holder- brush the machine to restore loose powder to the holes (for titanium cleaning is really important) Over flow cleaning: Unscrew loose powder holder underneath the platform. Put screw at close position and turn around to unscrew it to recover loose powders- screw it and place it in desired place including rings and caping Set wiper back at the position to clean lense- unscrew it and clean it with proper handling Dental suprastructure The manufacturer is also is involved in the dental industry, for which the company manufactures products such as implant-supported suprastructures. Using patient-specific geometry data, acquired through medical imaging or 3-D scanning, the personalised structure is designed in software and printed in titanium. As a concluding step, the dental technician finishes off the structure and completes the final prothesis. Through patented DentWise technology, geometry and surface retention related limitations set by traditionally moulded or milled suprastructures no longer apply. Through digital SLM technology, geometry and surface retention related limitations set by traditionally moulded or milled suprastructures no longer apply, Mercelis says. In addition, the implant connections are completed with high precision. Implant bars and bridges achieve a fit accuracy better than 20 Â µm at the implant interface. They also can integrate complex surface textures and sealing edges. DentWise suprastructures are manufactured using ultra-strong titanium alloy (Ti6Al4V, grade V), which outperforms the commonly used titanium grade II in terms of mechanical propertie (http://www.emdt.co.uk/article/selective-laser-melting)

The Secret Life Of Great White Sharks Essay -- essays research papers

Great White Sharks are greatly misinterpreted as vicious man-eaters because of the media, movies, and people’s imaginations, but they are actually large fish who mistake people for seals and other marine life. What is a great white shark? The great white, among the least understood of Earth’s creatures, is an apex predator, meaning that it is at the top of the food chain with no natural predators. This means great whites have their pick of food when it comes to selecting their prey (Klimley 15). Carcharodon carcharias, better know as the great white shark, have existed as a group for over 350 million years (Long). Its name means â€Å"ragged-toothed† (Gorman 10). The largest white shark on record was 21 feet long and weighed 7302 pounds. Its ancestors, now extinct, were three times this size, with teeth that were six inches long (White Shark). Today sharks are represented by over 600 species (Long). Great whites are part of a grouping know as mackerel sharks, a grouping which includes the salmon, porbeagle, and maco shark (MacGregor 46). Unlike the true fishes, sharks do not have internal bone, but instead have a cartilaginous skeleton (Long). This stiff flexible material is found in the ridge of your nose and in your earlobes. Because cartilage does not leave fossil remains like bones, there are no fossils of ancient sharks- just their teeth (Klimley 56). Little is known about great whites because they are enormous, bulky, and hard to handle. And that’s when t hey’re dead. Their body temperature is sometimes ten to fifteen degrees [Celsius] warmer than the surrounding water, which makes them efficient predators in cool water (Gorman 15). The back of the shark is a dull gray color and the underside is colored white. The tail is crescent shaped. There are five gill slits on great white sharks. Studying a live great white shark up close and in detail is, for obvious reasons, practically impossible (Sanders 31). The great white is the only shark that can hold its head above water to see what is happening on the surface (MacGregor 47). It has been said that sharks do not swim through water as much as they â€Å"fly† through it with their torpedo like body (Gorman 25). The fins of a shark serve important roles in this action. As the shark moves the Caudal, back, fin to propel it forward, careful adjustment of the pectoral, side, and dorsal, top, fins keep the shark leve... ...is planet. For them to be driven to extinction by man, a relative newcomer, would be more than an ecological tragedy; it would be a moral travesty (Gorman 29). Works Cited All About Sharks. 5 Feb 2001. <<a href="http://www.ozemail.com.au/~bilsons/sharks.htm">http://www.ozemail.com.au/~bilsons/sharks.htm>. Bowman, S.C. â€Å"Shark Attacks.† Reader’s Digest July. 1995: 74-8. Gorman, Jessica. â€Å"Inside the Great White.† National Geographic Apr. 2000: 2-29. Klimley, A.P, Anderson, S.D, Henderson, R.P, and P. Pyle. Great White Sharks: the biology of Carcharodon carcharias. New York: American Publishing Inc., 1996. Long, Douglas. The White Shark. 5 Feb 2001 <<a href="http://www.ucmp.berkeley.edu/vertebrates/Doug/shark.html">http://www.ucmp.berkeley.edu/vertebrates/Doug/shark.html>. MacGregor, Elise. â€Å"Beyond Jaws.† Windsurfing Magazine. Sept/Oct. 1993: 45-9. Martin, Glen. â€Å"Great White Sharks.† Discover. June. 1999: 54-61. Sanders, Zack. â€Å"A Great White Shark.† Newsweek. Oct. 1996: 30- 36. White Sharks. 20 Feb 2001. <<a href="http://www.aqua.org/animals/species/whitshark.html">http://www.aqua.org/animals/species/whitshark.html>.

Drinking Ticket Paper

The Worst night Ever It was a long, full day of work and I was ready to get back to the dorm to relax and have some fun, after all, it was my best friends birthday. We decided to go out for his birthday dinner for him and have a few drinks before we headed out. We had music cranking, we were singing and having a good end of the week party. Drinks began passing around and we took a turn for the worst, an RA outside our door smelled alcohol. Immediately the RA told us to open up to see what was going on, as if he didn’t already know, he too is a college student.So we all knew we had been caught so we let him come in to give us our punishments and go on with our soon to be sober lives. But as he walked in the room, cops decided to take a peak at what was going on. The RA told us he was upset with the cops â€Å"randomly showing up† but I didn’t believe him, and I still don’t. The cops made the RA walk us to the sinks with our pride and joy and dump it all dow n the drain. He was surprised as to how cooperative we were and almost let us off the hook for a violation, but realized we were income for him.So he got the breathalyzer out, skipped our rights and handed all of us drinking tickets like he’d done many times before. I have never been so upset in my life; so mad I started punching my bed and pillow. What I thought was going to be the peak of my week turned out to go down the drain just like my Wild Turkey 101. Looking back at it now, I don’t feel like it has impacted me as bad as I thought it was going to. Yes, my bank account is feeling the pain, but my hands have finally stopped hurting. I have gotten a lawyer who told me to do 24 hours of community service and take a drinking class by my court date.Not too bad, the punishment could be much worse. The drinking ticket hasn’t stopped me from going out, but it has stopped me from drinking. Since then I haven’t had a sip of alcohol at school and I actually e njoy it, watching other people do dumb stuff is just as fun as actually drinking, and it’s legal! I sure have learned my lesson just as I always do, the hard way. How this can affect my future Before this ticket ever happened, I had never thought how much a drinking ticket could really affect my life, nor did I think I would ever get one.Since the ticket I have put a lot of thought into how it can affect my near future as well as my far future. Now that I have a drinking ticket, employers could not higher me because of suspicion that I would break other laws to give him or her company a bad name. Also with this ticket I have a misdemeanor on my record. I never thought of myself being a criminal or having a bad record, but now I have one for a stupid think I did one night. Because of this being on my record, a policeman could take me to jail for something small such as a speeding ticket.The worst part of having the drinking ticket is that the school has put me on probation. I didn’t think this was a big deal because my grades are fine, but when I went to go and register for new classes I have to call the school and get my account temporarily upheld. This made registration for my class in the spring semester a lot harder than it usually is because all the classes that I wanted to take were either filled up or at a point in the day that I don’t want to be in class (8am). Because of this awful timing, I may sleep in through my classes and get a lower grade than I would like to have.One other thing that the drinking ticket has taken away from my future is that Campus Living will not hire me as a Resident Advisor because I can’t be trusted. Goals Since I have entered college I have set many goals for myself, most of these being current grades. Some of the goals that I have look into the future and those are the ones that can be most affected by this ticket. I want to maintain a 3. 0 GPA at the very lowest so that I can chose which major I want as a graduate student.This ticket has made this a lot harder to happen because of the amount of community service that I have had to do in the past few weeks, I have no spare time to relax either, but that’s what college is about. Because I am on probation with the school I couldn’t register for the classes that I wanted because I had to wait for the school to unlock my account. Because of this I now have a harder schedule and may not do as well as planned. I do believe that I can work through these classes next semester if I can manage to wake up on time.Other goals that I have at ECU is to be more involved and even president of a few clubs at the school. I have not looked into this part, but a drinking ticket could dictate whether or not I am able to run this part of the club. Since I have been at ECU I have met many friends and have had a great time, even with all the work that is contently due. I am hoping that this drinking ticket doesn’t affect my fu ture here at school and can get taken off of my record. Since the ticket I have not had a sip of alcohol and don’t plan to until I turn 21, I think I can wait another year and a half, not a big deal in my mind.I’ll just watch other people get into trouble and make fools of themselves when they are out trying to have fun and meet new people. In a way I am sort of thankful that this has happened. I am also glad that the turnout has not been as bad as I originally thought it was going to be. I could have had to go to jail or been in far more trouble with the school, so that’s one way to look at the situation positively. I am very sorry for drinking on campus and will not let it happen again, I don’t even want to drink anymore now that I have stopped for a few months.

The History of the Zamboni Invented by Frank Zamboni

The History of the Zamboni Invented by Frank Zamboni The fourth Zamboni every built they simply called it No. 4 sits  enshrined in the U.S. Hockey Hall of Fame  in Eveleth, Minnesota, along with its creator and inventor, Frank Zamboni. It stands, fully restored, as a symbol of the integral part this ice-resurfacing machine has played in professional hockey, as well as ice-skating shows and in ice rinks around the country. Always Amazed Indeed, Zamboni, himself, who died in 1988, is also enshrined in the  Ice Skating Institute Hall of Fame and has been honored with about two dozen awards and honorary degrees. He was always amazed about how (the Zamboni) became associated with the game of hockey, with ice, with whatever, said Zambonis son Richard in a video marking the 2009 induction ceremony. He would have been surprised and pleased about being inducted into the (ice hockey) hall of fame. But, how did a simple, tractor-like  machine  used on an ice-skating rink to smooth the ice as the Associated Press describes it come to be held in such high esteem in the ice hockey and ice skating worlds both in the U.S. and globally? Well, it started with ice. Iceland In 1920, Zamboni then just 19 moved from Utah to Southern California with his brother, Lawrence. The two brothers soon began selling block ice, which local dairy wholesalers used to pack their product that was transported by rail across the country, according to the Zamboni companys informative and lively  website. But as refrigeration technology improved, demand for block ice began to shrink and the Zamboni brothers began to look for another business opportunity. They found it in ice skating, which was skyrocketing in popularity in the late 1930s. So in 1939 Frank, Lawrence, and a cousin built Iceland Skating Rink in Paramount, a city about 30 miles southeast of Los Angeles, notes the companys website. It was, at the time it opened in 1940 with 20,000 square feet of ice, the largest ice skating rink in the world and could accommodate up to 800 ice skaters at one time. Business was good, but to smooth the ice, it took four or five workers and a small tractor at least an hour to scrape the ice, remove the shavings and spray a fresh coat of water onto the rink and it took another hour for the water to freeze. That got Frank Zamboni to thinking: I finally decided Id start working on something that would do it faster, Zamboni said in a 1985 interview. Nine years later, in 1949, the first Zamboni, called the Model A, was introduced. A Tractor Body The Zamboni was, essentially, an ice-cleaning machine placed on top of a tractor body, hence the APs description (though modern Zambonis are no longer built over tractor bodies). Zamboni modified the tractor adding a blade that shaved the ice smooth, a device that swept up the shavings into a tank and an apparatus that rinsed the ice and left a very thin top layer of water that would freeze within a minute. Former Olympic ice-skating champion Sonja Henie saw the first Zamboni in action when she was practicing at Iceland for an upcoming tour. She said, Ive got to have one of those things, recalled Richard Zamboni. Henie toured the world with her ice show, carting along a Zamboni wherever she performed. From there, the machines popularity began to soar. The NHLs Boston Bruins bought one and put it to work in 1954, followed by a number of other NHL teams.   Squaw Valley Olympics But, what really helped the ice-resurfacing machine shoot to fame where iconic images of a Zamboni efficiently cleaning ice and leaving a smooth, clear surface at the 1960 Winter Olympics in Squaw Valley, California. Since then, the name Zamboni has become synonymous with the ice-resurfacing machine, notes the hockey hall of fame induction video. The company says that about 10,000 of the machines have been delivered worldwide each one traveling about 2,000 ice-resurfacing miles a year. Its quite a legacy for two brothers who began selling blocks of ice. Indeed, notes the company website: Frank often pointed out to rink owners a comment indicative of his own lifelong mission: The principal product you have to sell is the ice itself.†

summary of Linda Hogans Power essays

summary of Linda Hogans Power essays In Linda Hogans 1998 novel Power, much is learned about Native American culture. The main characters, Omishto and Ama help reveal this culture. The novel is divided into nine chapters. In Chapter 1, Omishto, a girl is in a boat that is floating on a pond. She notices that there is a storm coming in. She describes the pond and the area around it. A snake tries to enter the girls boat, but she pushes it out with a pole, and then she moves the boat to land. As she does this, she feels something watching her, but does not want to look in the direction. A woman named Ama has told the girl that she is in the territory of the cat (3). The girl says that she has never seen the cat, but Ama saved one when some boys had it treed. Ama took away the boys rifle. The girls father named her Omishto, which means one who watches. Omishtos grandmother says that Omishto has a wind inside her called Oni. Omishto is careful on her way home because she can still feel something watching her. Chapter 2, Stormlight, opens with a story about a man named Abraham Swallow. People believe that he died from fear or magic in some trees near a canal. As Omishto walks toward Ama Eatons house, she recalls this story. Near Amas house there is a tree called Methuselah that is 500 years old and was planted by the Spanish. Methuselah is the only tree of its kind in the area. The tree and Amas house sit on the edge of the Taiga land. Taiga is the name of the Indian tribe to which Ama and Omishto belong. Amas house is old and looks like it is decaying. As Omishto reaches Amas house, Ama tells Omishto to come into the house. Omishto tries to sneak up on Ama, but Ama always hears her. Ama and Omishto then sit on the porch together and discuss Abraham Swallows death. Omishto tells Ama that she does not think magic killed Abraham. Abrah...

Appropriate Ways That Leader Should Use In School To Be Loved By Research Paper

Appropriate Ways That Leader Should Use In School To Be Loved By Subordinates - Research Paper Example Some people can use ideas to inspire others and this can be a good way for making people respect and love one as a leader. Therefore, the success of any leader is the establishment of good relationship with the subordinate. This is especially important when dealing with an education system where the leader is mainly the principle and the subordinates are the teachers. In many cases, leadership is a tool that is used in an institution to modify behaviour. This is because it helps to determine the goals of the organization as well as objectives expected. This means that the willingness of individuals to follow a person is what makes them a leader. Therefore in any leaning institution, success will mainly depend on the leadership style to be used by the head teacher. Therefore, the main focus of this paper is to find out the most appropriate ways the school leaders can use in order to gain favour from the subordinates. Research Objectives To review leadership styles successful in schools To examine the most effective leadership styles and how they affect the relationship among subordinates in the school. To review and interpret various leadership models adequate enough to run a school Leadership in schools in relation to Social Intelligence It is important to understand the meaning of the different terms used. Leadership is a complex term to explain. This is because in the traditional setup, leadership is used to bring about respect, teamwork and obedience. Leadership can also be defined as an influence that makes people act in a particular manner. On the other hand social intelligence is basically the ability to understand as well as manage people to act wisely in human relations (Goleman, 2006). This is because this is a factor that mainly affects people’s behaviours and interaction. Therefore, in the case of a school administrator and the subordinates, there is a huge relationship between the applicable leadership styles to social intelligence. This is because for a leader to be loved and respected by the subordinate, then one must also be able to understand the people and also interact with them without any difficulties. Results of the research Social intelligence principles There are numerous social intelligence and leadership principals that are applicable in the case of school leaders and their subordinates. Social intelligence is the ability to get along with others and also get them to cooperate with you. These principals are discussed herein. Humanization Social intelligence needs people to recognize humanity in others. This is a crucial aspect in leadership because people are supposed to be aware of what other people are capable. Therefore for a school administrator who needs to be loved by his subordinate, it is important to make sure that he considered other people’s feelings and also shun away from manipulating the subordinates.

Da Vinci's The Last Supper - Image Analysis Assignment

Da Vinci's The Last Supper - Image Analysis - Assignment Example When one examines the work it is fairly simple to understand how the apostles’ reactions to Jesus depict their astonishment at his words. Da Vinci depicts them as astonished, crystallized in a performative, nearly ironic state of shock. Symbolically the image groups the apostles in groups of three, with each different group reacting to Jesus’ announcement in subtle yet pronounced ways. The groupings of three hold obvious religious significance as the number is echoed throughout the Bible in a number of incarnations. Perhaps the most relevant such incarnation in the context of this work is that which refers to Jesus’ resurrection after three days, as a direct result of his betrayal that led to his eventual crucifixion at the hands of the Romans. In one grouping, Bartholomew, James, son of Alphaeus and Andrew are depicted together as simple surprised. In another grouping, Judas Iscariot, Peter, and John are depicted together. In terms of Biblical significance this last grouping is the most relevant in terms of relation to Christ, as well as narrative significance within the painting. Peter and John represent two of the closet and Biblically significant disciples; also, as is well understood, Judas Iscariot is the one that would eventually betray Jesus.