Mechanical and Bio--engineering Departments
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机械专业英文词典Mechanical Engineering English DictionaryAdhesion: The tendency of dissimilar particles or surfaces to cling to one another. Adhesion is an important property in the field of mechanical engineering as it affects the performance and durability of various materials and components.Airfoil: A structure designed to produce lift when air flows around it. Airfoils are commonly used in aircraft wings, propeller blades, and turbine blades.Bearings: Mechanical components that support and guide moving parts. Bearings reduce friction and enable smooth rotation or linear motion in machines and equipment.Casting: A manufacturing process in which a liquid material is poured into a mold and allowed to solidify into a desired shape. Castings are commonly used to produce complex metal components.Damping: The process of reducing or controlling the oscillations, vibrations, or noise in mechanical systems.Damping is achieved through the use of various materials and devices such as dampers and isolators.Elasticity: The ability of a material to deform under stress and return to its original shape when the stress is removed. Elasticity is an important property in the design and analysis of mechanical components.Fatigue: The weakening and eventual failure of a material subjected to repeated or fluctuating loads over time. Fatigue is a common cause of failure in mechanical components and structures.Gears: Mechanical components with toothed surfaces that transmit motion and power between rotating shafts. Gears are widely used in machinery, vehicles, and various mechanical systems.Heat exchanger: A device used to transfer heat between two or more fluids at different temperatures. Heat exchangers are commonly found in refrigeration, air conditioning, and power generation systems.Ignition: The process of initiating combustion in an internal combustion engine. Ignition systems are used toignite the fuel-air mixture in spark-ignition engines and diesel engines.Joule: A unit of energy in the International System of Units (SI). One joule is equal to the work done by a force of one newton acting over a distance of one meter.Kinematics: The branch of mechanics that deals with the motion of objects without considering the forces that cause the motion. Kinematics is concerned with the position, velocity, and acceleration of objects.Lubrication: The process of reducing friction and wear between moving surfaces by introducing a lubricant such as oil or grease. Lubrication is essential for the proper functioning and longevity of mechanical systems.Machining: The process of shaping or finishing a workpiece by removing material using various cutting tools. Machining operations include milling, turning, drilling, and grinding.Newton's laws of motion: Three fundamental principles that describe the behavior of objects under the influenceof forces. Newton's laws of motion are widely used in the analysis and design of mechanical systems.Optimization: The process of finding the best solutionto a problem within given constraints. Optimization is an important aspect of mechanical engineering, especially in the design and operation of systems and components.Pressure: The force per unit area exerted by a fluid or gas. Pressure plays a crucial role in the design and analysis of fluid systems, hydraulic systems, and pneumatic systems.Quality control: The process of ensuring that products and processes meet the desired standards and requirements. Quality control is essential in mechanical engineering to ensure the reliability and performance of manufactured components.Resilience: The ability of a material to absorb energy without undergoing permanent deformation. Resilience is an important property in the design of impact-resistant materials and structures.Stress analysis: The process of evaluating the internal forces and stresses in a mechanical component or structure. Stress analysis is used to ensure the safety andreliability of engineering designs.Thermodynamics: The branch of physics that deals with the relationships between heat, work, and energy. Thermodynamics is essential for understanding and analyzing the behavior of various mechanical and thermal systems.Ultrasonic testing: A non-destructive testing technique that uses high-frequency sound waves to detect flaws or defects in materials. Ultrasonic testing is widely used in the inspection of welds, castings, and other critical components.Vibration: The oscillation of mechanical systems or components around a reference point. Vibration analysis is important for predicting and controlling the dynamic behavior of machines and structures.Welding: The process of joining two or more metal pieces by heating them to a high temperature and applying pressure or filler material. Welding is a common method for fabricating metal structures and components.中文翻译:粘附:不同颗粒或表面相互粘附的倾向。
生物分离工程的英语Biological Separation Engineering is a specialized field that focuses on the isolation and purification of biological products. It plays a crucial role in the pharmaceutical, food, and biotechnology industries, where the extraction ofbioactive compounds from natural sources is essential.The process typically begins with the selection of an appropriate feedstock, which could be anything from plant material to microorganisms. Once the feedstock is identified, it undergoes a series of steps to separate the desired components. These steps may include:1. Pre-treatment: This involves breaking down the complex structure of the feedstock to release the target molecules. Techniques such as mechanical disruption, enzymatic digestion, or chemical treatment may be used.2. Extraction: The target molecules are then extractedfrom the pre-treated material. This can be done using solvent extraction, where a solvent is used to dissolve the desired compounds, or by using methods like supercritical fluid extraction, which employs high-pressure gases to extract the compounds.3. Concentration: After extraction, the solution is often diluted and needs to be concentrated to increase the concentration of the target molecules. This can be achievedthrough evaporation, membrane filtration, or centrifugation.4. Purification: The concentrated solution may still contain impurities, so further purification is necessary. Chromatography is a common technique used at this stage, which separates molecules based on their affinity to the stationary phase.5. Polishing: The final step is to polish the purified product to ensure it meets the required specifications. This may involve additional rounds of purification or the use of specific techniques to remove any remaining impurities.Biological separation engineering is a complex process that requires a deep understanding of both the properties of the target molecules and the various separation techniques available. Advances in this field are continually improving the efficiency and selectivity of these processes, making it possible to produce high-quality biological products for a wide range of applications.。
英语课程中的机械工程与制造业词汇在学习英语的过程中,掌握相关专业词汇是非常重要的。
本文将介绍一些在机械工程与制造业领域常用的英语词汇,帮助读者扩展词汇量,提高专业能力。
1. Mechanical Engineering(机械工程)- Mechanical engineering is the branch of engineering that involves the design, analysis, and manufacturing of mechanical systems.2. Manufacturing(制造业)- Manufacturing is the process of converting raw materials into finished products through various methods such as machining, forming, and assembly.3. Automation(自动化)- Automation is the use of control systems and technology to operate and control machinery and processes with minimal human intervention.4. Robotics(机器人技术)- Robotics is the branch of technology that deals with the design, construction, and operation of robots.5. CAD/CAM(计算机辅助设计与制造)- CAD (Computer-Aided Design) and CAM (Computer-Aided Manufacturing) refer to the use of computer technology to assist in the design and manufacturing processes.6. Precision machining(精密加工)- Precision machining refers to the process of removing material from a workpiece to create a precise and accurate final product.7. CNC(Computer Numerical Control,计算机数控)- CNC is a manufacturing process that uses computer control to operate machinery, such as milling machines and lathes, to produce highly precise and complex parts.8. 3D printing(三维打印)- 3D printing, also known as additive manufacturing, is a process of creating three-dimensional objects by layering materials based on a digital model.9. Quality Control(质量控制)- Quality control is the process of ensuring that products or services meet specified requirements and standards.10. Assembly line(装配线)- An assembly line is a manufacturing process in which a product is constructed by a series of workstations, with each workstation performing a specific task.11. Material Science(材料科学)- Material science is the study of the properties and behavior of materials, including metals, polymers, ceramics, and composites.12. Thermodynamics(热力学)- Thermodynamics is the branch of physics that deals with the relationships between heat, energy, and work.13. Fluid Mechanics(流体力学)- Fluid mechanics is the study of how fluids (liquids and gases) behave and interact with forces.14. Finite Element Analysis(有限元分析)- Finite element analysis isa numerical method used to study the behavior of structures and systems under various conditions.15. Lean Manufacturing(精益生产)- Lean manufacturing is a systematic approach to minimizing waste and improving efficiency in the manufacturing process.以上是关于机械工程与制造业领域常用的一些英语词汇。
s Dramatically reduced development costsThe wide range of outdoor modules with flexible I/O available with IQAN ensures complete machine manage-ment. The system offers a building-block approach that simplifies component design and installation while also reducing development time and expenses.u Rugged design and excellent ergonomicsIQAN hardware is thoroughly tested for robust operation and compatibility with all kinds of mobile hydraulic equipment. In addition, it meets industry and government standards for operation in severe conditions, including extremely high or low temperatures, vibrations, mechanical impact and electromagnetic interference.Efficiency in focus – throughout the entire machine life cycle Electronic control made easyThe state-of-the-art IQAN systemis a unique, totally electronicapproach that replaces mechani-cal and electromechanical systemsfor controlling and monitoringhydraulics in mobile machines.With Parker’s IQAN, you havecomplete freedom to design cus-tomized software without the needfor advanced programming skills.The flexible functions availablewithin the IQAN system allowsophisticated applications to beprogrammed and optimized veryquickly, enabling huge savings ondevelopment time – and cost.The IQAN software tools cover allphases of a machine’s life cycle,from development through pro-duction to after sales.NTA L E SsEasy installationThe design philosophy behind the IQAN system is based on simplicity in every way. The modular CAN bus structure offers total freedom in machine development – the rugged IQAN units can be placed in any area of the mobile machine, enabling a more compact design and/or minimised wiring, while reducing installation time to an absolute minimum.RO DU C T I O NPsNo programmingskills requiredIQAN is user-programmable via an advanced, highly intuitive graphic design tool, which dramatically simplifies development. Simulation of the control system can be carried out in parallel with the programming of machine functions.u Advanced diagnosticsThe IQAN control units have an advanced built-in diagnostics system that will help to minimize down-time in the case of failure in the field. Problems can be located either by the default system diagnostics delivered with the standardproduct, or by customer designed diagnostics functionality.s Intelligent display/control The IQAN master modules incorp- orates powerful computing capacity with high processing speeds and multiple CAN bus interfaces. These features make the units extremely flexible and adaptable to a variety of applications with a wide range of hydraulic components and input devices such as joysticks, pedals and sensors.s Sensors forevery type of needThe IQAN sensors have been deve-loped specifically for mobile appli-cations and are designed from the ground up to excel in the demanding physical, regulatory and commercial environment of the mobile machine sector.Intelligent software – the way ahead40 years of motion control experience – ready to plug and playParker’s experience in hydraulic motion control is second to none, with over forty years of experience in close collaboration with custo-mers world-wide. What started with basic ergonomic demands from machine operators hasdeveloped into highly advancedelectro-hydraulic machine control knowledge, made accessible to everyone in the IQAN product range. An IQAN system will not only offer shorter development time for the machine manufactu-rer, but also maximum functiona-lity and up-time for the machine owner once it enters the market.Illustration shows possible product applications in an agricultural tractor.-image courtesy of Valtra Inc.u Multi master support Complex machine layouts anddemanding machine functionality can be facilitated easily with a multi mas-ter system design. Major benefits of such a system include distribu-ted functionality and diagnostics, a distributed human machine interface (HMI), extended memory capacity, faster cycle time and additional I/Os. With IQAN, a multi master system will feel like a single master system.u Long-life precision controls At Parker, we know what reliability means for profitability. All IQAN control units are thoroughly tested and builtto withstand many years of use and abuse in the toughest environmentsimaginable, while maintaining theprecision needed for maximum productivity.sRugged 32-bit performance The IQAN control units have been designed with 32-bit performance to meet high computing demands. The rugged design of the IQAN hardware is tested for robust operation and compatibility with mobile hydraulic equipment. In addition, it meets industry and government standards for operation in severe conditions that include extremely high or low tempe-ratures, vibrations, mechanical impact and electromagnetic interference.u SafetyAll IQAN modules are designed with the functional safety requirements of mobile machines in mind.Where there is a need to prove the safety integrity of each implemented safety function; the safety controller IQAN-MC3 can be used.It is designed in accordance with IEC 61508, and can be used to implement safety functions of up to SIL2.When applying EN ISO 138489-1 for safety functions, it can be used as a PLd subsystem.u Create advanced functions – in minutes!IQANdesign is an advanced design tool with an intuitive graphic interface, which simplifies application development for your mobile machine and redu-ces development time. This tool is mainly used for general system layout and machine function design. There is a wide range of predefined building blocks available, such as closed loop control, signal processing, math calculations, communication protocols (e.g. SAE J1939) and system diagnostics.IQANdesign can be used to design systems with multiple masters. Multiple master design work is simplified by use of a project file that contains applica-tions for all IQAN masters in the system.In addition to machine function design, IQANdesign also provides a simple way to accomplish display page programming using a simple drag and drop inter-face. The menu system can also be customized .t Increased productivity andreduced environmental impactWith IQAN Software studios, any OEM can create custom functions that optimize a machine’s energy efficiency – the power can easily be made available when needed, and only then.Easier development...Cut time-to-market by several monthsThe IQAN software studios cover all phases of a machine’s life cycle, from development through pro- duction to after sales. The main philosophy behind the IQAN Soft-ware Studios is that the OEM, with their extensive knowledge of their machine’s life cycle, should be able to create software that makestheir product perform at top level, easy to produce and giving the end user maximum up-time.All this can be achieved without any previous programming expe-rience – anyone who knows what functions are needed can learn to build them in a remarkably shorttime.• 32-bit technology • Outstanding motion control experience • User-friendly• Software-based development• World-wide supportt Endless possibilitiesToday, an OEM’s engineering depart-ment wants to design and prototype new machines or features quickly and easily. The production depart-ment wants to automate, log and trace the delivery status. The service department wants to handle warran-ties, offer proactive maintenance and download machine upgrades. Finally, the machine owner wants a reliable machine with high productivity and low downtime. To meet all of these demands, IQAN Software Studios were designed to fulfill the needs of the machine life cycle model. IQAN tools give an extraordinary value over the product life cycle. A product generation that lives for 5-10 years can be easily be updated to remain competitive until it is replaced by the next product generation.sVirtual simulation speeds up developmentIQANsimulate is a simulation tool, which simplifies function testing andvalidation, reducing development time. It simulates all of the hardware modules in an IQAN application. Software simulation is a safer way to test new app- lications than on an actual machine. Simulation of all input values in your application is easy using the on-screen sliding bar interface. While simulating inputs you can simultaneously measure the resulting output values. T ogether with module and I/O error simulation you will be able to perform machineFMEA (Failure Modes and Effects Analysis). The simulator will behave just like the ‘real thing’, meaning you will be able to look at your display pages,adjust parameters, view logs, test your user interface and much more.p Speed up production Getting a machine design into production is time consuming. Testing equipment and procedures have to be developed and machine start-up and delivery status needs to be recorded. Fortunately, IQAN Software is tailor-made to fulfill all of these demands. Software tools from IQAN can be adapted to feature machine-specific procedures for maintenance, fault finding and web supported machine upgrades, while the machine owner can access spare parts manuals, maintenance videos, service intervals and service sugges-tions by the software.t Fine-tune in the real world During the development phase you can use IQANrun to optimize your machine’s performance with the help of IQANrun’s advanced graphic measuring and machine statistics collection functions. IQANrun also of-fers a convenient way of developing the basic machine settings during theprototyping phase.s Fewer components, easier installationIQANscript allows you to design machine startups with secured and standard-ized procedures. This increases manufacturing productivity and initial machine quality. By creating troubleshooting scripts you can guide both production and service personnel during the fault finding process. This decreases the fault finding time and makes it possible for less trained personnel to find problems that otherwise would require expert knowledge....easier production...Set-up and customise in minutes – not days!With IQANscript you create scripts using simple drag and drop ope-rations. Each script is a sequence of actions that can be executed in IQANrun. A wide range of script actions are available to build scripts for different ing flow control actions such as conditions and loops you can control how the script is executed. With the different measure andotherwise complex operations. Input from the user can also be collected and used by the script. To provide traceability you can include a customized report in the script. When the script is executed the results will be recorded in the report, making it possible to get a good overview as well as saving the report for future use.t Real-time adjustmentsThe user-friendly IQANrun software is makes fine-tuning functions easy. Any changes can be followed on-screen in real-time for maximum control. The result for the end-user is a better performing mobile machine – andperformance means profitability.log actions, information can be re- trieved from the master units to be analyzed by the script or displayed to the user. Setting actions provide full control of the master settings, making it possible to fine tune the machine using a script. IQANs-cript provides powerful building blocks for the script user interface. Using formatted text and imagesthe script user is guided throughThe script concept was developed to help OEM production departments create routines for testing, tuning, setting options, logging, delivery sheets, etc.• Easy to install and set-up quickly• Customize as desired • I ncrease your delivery capacitysUpgrade anywhereFunctions can be easily tweaked to perfection on a laptop computer, and then downloaded to the IQAN master module – in a workshop or out in thefield, in a matter of minutes.t Remote diagnosticsWith a modem connected to the master module, remote diagnostics on a machine out in the field becomes possible. Trouble-shooting and updating of application software can be done remotely. There is no need to get to the machine for a first diagnosis, and if a physical repair is needed, the service technnician is well prepared with advance information and can bring all the necessary spare parts and tools needed to get the machine running quickly....and easier maintenanceCutting down-time with intelligent diagnostics systemsToday, service technicians have a large number of tools and docu- ments to keep track of. Someti-mes, it is hard for them to find the right information and to be sure they use the correct version of a software or document. The cus-tomize feature in IQAN Productive Studio was developed to solve this problem. It allows you to collect all machine software and informa-tion in one user interface and to distribute it to your users quickly and easily via the web. Machine downtime is minimised since the service technicaian have all the information needed in one place and the information is always up to date.IQANcustomize is a tool that enables customization of the IQANrun software functions and appearance to create a unique ser-vice and production tool. This is done by creating one or more pa-ges using the graphical page editor in IQANcustomize. The pages can contain specific information for each machine type and will be displayed when IQANrun is star-ted. Your company logo, graphics, links and information may all be integrated in the user interface of IQANrun. Using IQANcustomize you can also show or hide IQAN-run functions, or make them avai-lable as links on any page, to assist users through a troubleshooting ortuning process.IQAN product range Everything you need for complete controlIQAN by Parker offers a completerange of control products to meetyour needs. No matter what yourneed is, Parker can offer anythingfrom the most basic valve driverapplication to a complete controlsystem for larger, more complica-ted machines.11Your local authorized Parker distributorParker WorldwideE d . 2015-04-21EMEA Product Information Centre Free phone: 00 800 27 27 5374(from AT , BE, CH, CZ, DE, DK, EE, ES, FI, FR, IE, IL, IS, IT , LU, MT , NL, NO, PL, PT , RU, SE, SK, UK, ZA) US Product Information Centre Toll-free number: 1-800-27 27 537Europe, Middle East, AfricaAE – United Arab Emirates, DubaiTel: +971 4 8127100 ********************AT – Austria, Wiener Neustadt Tel: +43 (0)2622 23501-0 *************************AT – Eastern Europe, Wiener NeustadtTel: +43 (0)2622 23501 900 ****************************AZ – Azerbaijan, Baku Tel: +994 50 22 33 458****************************BE/LU – Belgium, Nivelles Tel: +32 (0)67 280 900*************************BG – Bulgaria, Sofia Tel: +359 2 980 1344**************************BY – Belarus, Minsk Tel: +48 (0)22 573 24 00 ************************CH – Switzerland, Etoy Tel: +41 (0)21 821 87 00*****************************CZ – Czech Republic, Klecany Tel: +420 284 083 111*******************************DE – Germany, Kaarst Tel: +49 (0)2131 4016 0*************************DK – Denmark, Ballerup Tel: +45 43 56 04 00*************************ES – Spain, Madrid Tel: +34 902 330 001 ***********************FI – Finland, VantaaTel: +358 (0)20 753 2500 *************************FR – France, Contamine s/Arve Tel: +33 (0)4 50 25 80 25 ************************GR – Greece, Athens Tel: +30 210 933 6450 ************************HU – Hungary, Budaoers Tel: +36 23 885 470*************************IE – Ireland, Dublin Tel: +353 (0)1 466 6370 *************************IT – Italy, Corsico (MI)Tel: +39 02 45 19 21 ***********************KZ – Kazakhstan, Almaty Tel: +7 7273 561 000****************************NL – The Netherlands, Oldenzaal Tel: +31 (0)541 585 000 ********************NO – Norway, Asker Tel: +47 66 75 34 00************************PL – Poland, Warsaw Tel: +48 (0)22 573 24 00 ************************PT – Portugal, Leca da Palmeira Tel: +351 22 999 7360**************************RO – Romania, Bucharest Tel: +40 21 252 1382*************************RU – Russia, Moscow Tel: +7 495 645-2156************************SE – Sweden, Spånga Tel: +46 (0)8 59 79 50 00 ************************SK – Slovakia, Banská Bystrica Tel: +421 484 162 252**************************SL – Slovenia, Novo Mesto Tel: +386 7 337 6650**************************TR – Turkey, Istanbul Tel: +90 216 4997081 ************************UA – Ukraine, KievTel: +48 (0)22 573 24 00 ************************UK – United Kingdom, Warwick Tel: +44 (0)1926 317 878 ********************ZA – South Africa, Kempton Park Tel: +27 (0)11 961 0700*****************************North AmericaCA – Canada, Milton, Ontario Tel: +1 905 693 3000US – USA, Cleveland (industrial)Tel: +1 216 896 3000US – USA, Elk Grove Village (mobile)Tel: +1 847 258 6200Asia PacificAU – Australia, Castle Hill Tel: +61 (0)2-9634 7777CN – China, Shanghai Tel: +86 21 2899 5000HK – Hong Kong Tel: +852 2428 8008ID – Indonesia, Tangerang Tel: +62 21 7588 1906IN – India, MumbaiTel: +91 22 6513 7081-85JP – Japan, Fujisawa Tel: +81 (0)4 6635 3050KR – South Korea, Seoul Tel: +82 2 559 0400MY – Malaysia, Shah Alam Tel: +60 3 7849 0800NZ – New Zealand, Mt Wellington Tel: +64 9 574 1744SG – Singapore Tel: +65 6887 6300TH – Thailand, Bangkok Tel: +662 186 7000TW – Taiwan, New Taipei City Tel: +886 2 2298 8987VN – Vietnam, Ho Chi Minh City Tel: +84 8 3999 1600South AmericaAR – Argentina, Buenos Aires Tel: +54 3327 44 4129BR – Brazil, Cachoeirinha RS Tel: +55 51 3470 9144CL – Chile, Santiago Tel: +56 2 623 1216MX – Mexico, Toluca Tel: +52 72 2275 4200© 2010-2015 Parker Hannifin Corporation. 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BE.010 Spring 2005Session #5 notesBioengineering in Mechanical EngineeringOutline of this session:-overview of the Mechanical Engineering (ME) major and its undergraduate requirements at MIT-discussion of the positions in industry available to Mechanical Engineers- a sampling of current research activities in the department-description of some of the biological engineering classes at MITIntroductionRoger D. Kamm is a professor of Mechanical Engineering and Biological Engineering at MIT. His current research involves biomedical fluid dynamics and solid mechanics. Kamm describes most of his projects as “a blend of experiment, theory and numerical analysis.” (from MIT faculty website)Overview of the ME MajorThe traditional ME curriculum (course 2) consists of the core required subjects, mostly taught by the ME faculty, two restricted electives, and four unrestricted electives, mostly taken during the student’s junior and senior years.The 2a program allows more flexibility within the program by substituting some of the required ME subjects with other classes. Students in course 2a can choose between Biotrack and the Energy Conversion Engineering track. Shown in this slide are the substitutes made for Biotrack. As you can see, organic chemistry, biochemistry, and biological engineering classes replace many of the second level ME classes.Some students in course 2 can easily minor in Biomedical Engineering since some of the medical engineering electives overlap with the ME restricted elective requirements. This spectrum shows the overlap between the school of engineering and the school of science, in this case representing mostly biology and chemistry. Finally, students majoring in the pure sciences such as biology are not much exposed to the school of engineering. The traditional ME major is founded on engineering. Course 2a brings the student in greater contact with biology and biological engineering. The proposed Biological Engineering (BE) major further acquaints the student with the life sciences. Job Opportunities for Mechanical EngineersThese two slides show the many ways students at MIT can be educated in bioengineering through choice of major and/or minor. The following slide shows industry opportunities for mechanical engineers with a biological engineering slant, such as 2a majors in Biotrack.Research Groups at MITThis slide lists the MIT faculty in the ME department and some of the research projects they are currently involved in. As you can see, mechanical engineers build useful devices on a wide scale range.So Lab: Cell MechanicsAssociate Professor of Mechanical and Biological Engineering Peter So studies cell mechanics using rheological and spectroscopic tools. His lab deforms the flow of matter and alters beads on the cell surface in order to observe its Brownian fluctuations. The graphs on the right are expressed as functions of frequency.The So Lab is interested in understanding tissue physiology through the use of fluorescent photons that are made to penetrate the brain tissue. The resulting fluorescent vs. non- fluorescent cells can be used to create gene and protein expression profiles.Two-photon endoscopy, a method for examining the interior of the body, can be used to develop non-invasive optical biopsy. The latter would result in faster diagnosis and treatment, in addition to greatly reducing medical costs.Ian Hunter: Bioinstrumentation using Nano-TechnologyProfessor of Mechanical and Biological Engineering Ian Hunter is interested in the applications of nanotechnology to the life sciences. This slide compares the standard 96 well plate to a computer image of nano-cuvette arrays fabricated in his lab. Clearly, the latter's smaller size render it more efficient and portable.The private biotechnology company BioTrove was founded five years ago by students in the department of Mechanical Engineering at MIT who were inspired by Hunter's Bioinstrumentation Lab. In the past, Hunter worked on the development of drug delivery system devices that allow the skin to be permeable for a certain period of time. Hunter designed the NanoWalker, a robot device that walks on the surface of its surroundings to take measurements. This slide lists the functions that can be incorporated into the NanoWalker system. As you can see, highly orientated pyrolytic graphite is currently imaged with NanoWalker technology. This slide shows another fabrication of the Bioinstrumentation lab. BioTrove is currently devoted to the development of drug delivery system devices and other medical products through theuse of nano-scale technologies.These pictures depict muscle tissue on different scales. Professor Hunter's lab made use of the charged and uncharged states of Calix[4]arene bis-bithiophene to induce conformational changes in the molecules, resulting in its expansion and contraction. The molecules were immersed in a bathing solution and attached to wires, allowing for the movement of the robotic hand.Lang Lab: Single Molecule BiomechanicsAssistant Professor of Mechanical and Biological Engineering Mathew J. Lang is interested in understanding the mechanical structure and function of proteins and enzymes in order to discover and develop biological motors. His lab makes use of facilities such as the ones shown in this slide. These instruments allow for single molecule fluorescence detection and optical trapping through the use of computersto control position and beam paths.In this slide, a laser focuses down and traps a bead that has a different index of refraction from the surrounding fluid. The bead is linked to a protein to test the strength and power this particular biological motor.In this slide, an optical trap applies a known level of force to the trapped bead, which is attached to an actin filament. The Lang lab is interested in how different levels of force influence the degree of binding in proteins.Griffith Lab: Tissue EngineeringThe Griffith Lab is interested in the development of a scaffold matrix to replace cancellous bone-bone with a spongy or Swiss cheese structure. Most of the elderly today with this ailment rely on grafting from another bone region to treat this ailment.This slide shows a microfabricated bioreactor that can test for toxicity in liver tissue. The growth factor protein (GFP) is used to tag and identify cells. The flow media exposes the toxin to liver cells. Fluorescent cells indicate the presence of toxin in solution.Kamm Lab: Cellular and molecular biomechanicsThis slide shows the cellular force transmission pathways in the matrix of a cell. The layer between the intracellular and extracellular matrix is composed of many different types of protein. These proteins attract the cell membrane to its cytoskeleton. We will now focus on the particular set of proteins in the box.An external force is applied to the boxed area through the use of an electromagnet focused to the sharp tip. The tip is brought to a bead and a magnetic force is applied. We look at the response in the cell.In the picture in this slide, the light spots indicate the presence of protein in the cell. The graphs show the application of different levels of force and the resulting movement of the cell at different times and frequencies.This slide shows a specific example of a force-induced conformational change. Focal adhesion targeting (FAT) is a sub-domain of focal adhesion kinase (FAK). Shown is a molecular model of the domain of paxillin that binds to FAT. Using steered molecular dynamics (SMD), we apply a force to the molecular model and see how its conformation changes.This slide shows the stiffness properties of actin filaments in the cytoskeleton. The picture at the right shows a molecular model of an actin filament monomer. Granulues are small molecules found in neutrophils that later channel in the microfluidic device shown. The motion of the granulues is monitored. Brownian motion significantly decreases when the cell is immersed in a stiff matrix.The Kamm lab is interested in the systematic modeling of the cytoskeleton. They are constructing a computational model that mimicks the behavior of the cytoskeleton. If the cytoskeleton is deformed, it may rupture the actin filaments and the cross-linking proteins between the filaments.。
课程名专业英文课程名三维绘图机自3D cartography控制工程基础机自、测控、工业Fundamentals of Control Engineering机械制造基础机自、测控、工业Fundamentals of Mechanical Manufacture液压与气压传动包装、机自Hydraulic and Pneumatic Transmission机电传动与控制机自Mechanical & Electrical Transmission & Control 测试技术机自Measurement Technique微机原理及应用(二)包装、材料、工业Principle of the computer & application专业英语机自Professional English机械制造技术机自、工业Mechanical Manufacture Technology运筹学工业Operational research现代工业工程概论工业Introduction to Modern Industrial Engineering系统工程工业System Engineering生产系统仿真工业Production System Simulation理论力学包装、机自Theoretical Mechanics材料力学(一)机自Material Mechanics I材料力学(二)包装Material Mechanics II工程力学材料、工设、测控、工E ngineering Mechanics机械原理包装、机自、工业Theory of Machines and Mechanisms机械设计包装、机自、工业Mechanical Desinge机械设计基础(一)材料、工设、测控The Fundamental of Mechanical Design机械设计基础(二)The Fundamental of Mechanical Design机械基础The Fundamental of Machine包装与印刷概论包装Package&printing Introduction包装动力学包装Package Dynamics包装材料学包装Package Materials包装工艺学包装Package Technology专业英语包装Professional English包装测试技术包装Package Testing Technology包装结构设计包装Package Stucture Design包装装潢与造型设计包装Package Art & Shape Design电脑美术设计包装Computer Art Design互换性与技术测量(一)测控Interchangeability and Technical Measurement I材料、机自、工业Interchangeability and Technical Measurement II 互换性与技术测量(二)信号与系统测控Signal and System工程光学测控Engineering Optics传感器原理与应用测控Principle and Application of Sensor误差理论与实验设计测控Error Theory and Experimental Design测控电路测控Circuit of Measurement and Control光电检测技术测控Photoelectric Measurement Technique微型计算机原理与应用测控Micro Computer Principle and Application接口技术及应用测控Interface Technique and Application质量控制测控Quality Control管理信息系统(一)工业Management Information System I工程材料(一)机自Engineering Materials I工程材料(二)测控Engineering Materials II材料成型基础材料The Fundamental of Materials Forming物理化学(二)材料Physical chemistry材料冶金传输原理材料Transport Principle of Metallurgy金属学及热处理材料Metallography and Heat Treatment材料力学性能材料 Properties of Material Mechanics材料CAD/CAM基础材料The Fundamental of CAD/CAM for Material Form 材料成型原理材料The Principle of Material Forming材料成型工艺材料The Technology of Material Forming工程材料学材料Engineering Materials检测技术及控制工程材料Detecting Technology and Control Engineering 专业英语阅读材料Reading of Speciality EnglishEngineering Graphics I-1工程图学(一)-1材料_包装_机自_测控_工业Engineering Graphics I-2工程图学(一)-2材料_包装_机自_测控_工业工程图学(二)工业Engineering Graphics II工程图学(三)Engineering Graphics III工程图学(四)Engineering Graphics IV土木工程制图-1Civil Engineering Graphics 1土木工程制图-2Civil Engineering Graphics 2计算机绘图包装、机自Computer Aided Graphics基础素描包装、工设Foundation of Pencil Sketch色彩包装Color设计素描工设Design Sketch计算机辅助平面设计工设CAD Two-Dimentional Design计算机辅助立体设计工设CAD 3-Dimentional Design工设CAD Mould Design & Making计算机辅助模具设计与制阴影透视工设Shadow Perpective模型制作工设Mould Making专业英语工设Professional English平面构成工设Plane Stuies色彩构成工设Color Stuies立体构成工设3D Studies人机工程学工设、工业Ergonomics设计效果图技法工设Design Rendering Techniques摄影基础工设Photography Principles三维动画与产品开发工设3D Animation工业设计法规工设Law & Regulation of Industrial Design人机设计概论工设Ergonomics微机原理及应用机自Principle of the computer and application计算机软件基础机自、测控Computer Software工业机器人机自Industrial Robot计算机数控技术机自Computer Numerical Control TechnologyCAD/CAM技术机自CAD/CAM Technology数控机床机自Numerical Control Machine Tod产品造型设计机自Products Shape-Design of Mechanical Products 机械设计学机自Machanical Design science机构设计机自Mechanism Design机械系统设计机自Mechanical System Design机械优化设计机自Mechanical Optimization Design计算机辅助设计机自Computer Aided Design数控自动编程机自Numerical Control Automatic Programming先进制造技术机自、工业Advanced Manufacturing Technology计算机控制系统机自Computer Control Systerm特种加工机自Non-traditional Machining成组技术机自Group TechnologyMATLAB程序设计及应用机自MATLAB Programming and Application现代设计方法机自Modern Design Method多媒体技术工设、测控、工业Multimedia Technology系统设计工业System Design作业研究工业Operation Research物流与供应链工业Logistics and Supply Chain生产计划与控制工业Production Planning and Control工程项目管理工业Engineering Project Management人力资源管理工业Human Resource Management组织行为学工业Organization Bahavior风险评估与管理工业Venture Evaluation and Management半导体制造概论工业Introduction to Semiconductor Manufacture包装与印刷机械包装Package & Print Machinary包装印刷技术包装Package & Print Technique包装标准与法规包装Package Standard & Regulation包装企业管理包装Package Enterprise Management包装环保技术包装Environmental Protection for Package有限元软件应用包装Finit & Element Software Application弹性力学与有限元机自Elastic Mechanics and Finite Element机械振动学机自Mechanical Vibration机械创新设计机自、工设Machinery Innovation Design标准化与质量管理工设、测控Standardization and Quality Management现代控制理论测控Modern Control Theory可靠性基础测控Basic Reliability精密测控与系统测控Precision Measuring and Control System测控仪器与设计测控Design of Measuring and Control Instrument智能仪器设计测控Design of Intelligent Instrument信号分析与处理测控Signal Analysis and Processing精密测量技术测控 Precision Measurement Technique技术监督法规测控Law of Technical Surveillance产品质量检验技术测控Inspection Technique of Product Quality误差理论与实验设计材料Experiment Design and Error Analysis稳健性设计测控Robust Design无损检测技术测控Nondestructive Testing Techinque干涉测量技术测控Interferential Measurement Techinque数字图像处理测控Digital Image Processing激光原理与应用测控Laser Theory and Application光电精密仪器设计测控Design of Optoelectronic and Precision Instr通信原理测控Communcation Theory光电子学测控Optoelectronics抽样技术测控Sample Technique6σ理论测控6σ Theory精密机械制造工程测控ManufactureEngineering of Precision Machine 光电信息基础测控Basic Ptotoelectronic Information纳米测量技术测控Nanometer Measurement Technique光通信技术测控Optic Communication TechniqueCCD及应用技术测控CCD and Application Technique光学零件制造工艺测控Optic Parts Manufacture Techinque计量学基础测控Basic Metrology管理信息系统(二)测控Management Information System可靠性与质量管理工业Reliability and Quality Management质量管理学机自Quality Management金属结晶凝固和控制材料Freezing and Control of Metals Crystallization 材料成型模具设计材料Die and Mold Design for Materials Forming材料成型设备材料The Equipment of Materials Forming材料物理性能材料The Physical Properties of Materials材料无损检测材料Nondestructive Detecting for Materials材料表面工程学材料Surface Engineering of Materials金属腐蚀及防护材料Erosion and Protection of Metals材料微观分析技术材料Micro-analysis Technology of Materials焊接材料材料Welding Materials特种铸造材料Special Casting塑性成型计算机模拟材料Computer Simulation of Plastic Forming陶瓷材料材料Ceramic Materials复合材料材料Complex Materials功能材料材料Functional Materials纳米材料材料Nano-Materials材料激光加工材料Laser Processing of Materials金属断口分析材料Rupture Analysis of Metals粉末冶金材料Powder Metallography塑料材料机试Plastic Materials模具与成型加工包装Mould &Shape processing金属塑性成形原理机自Plasticity shaping principle of metal金属与塑料成型设备机自Metal and plastic shaping equipment机自Plastic shaping craft and mold design塑料成型工艺与模具设计冲压工艺与模具设计机自Ramming craft and mold design模具制造技术机自Manufacturing Technology of Die and Mould模具CAD/CAM机自Mold CAD/CAM挤压工艺与模具设计机自Extrusion Technology and Mold Design锻造工艺与模具设计机自Forging Technology and mold design视觉传达设计工设Visual Convey Design展示设计工设Business Display Design环境设计工设Enviromental Design室内设计工设Interior Design造型材料工艺学工设Forming Material Studies产品造型设计工设Products shape-designing设计方法学工设Design Methods网页设计工设Homepage Design美学工设Aesthetics字体与商标设计工设Design of Font & Trademark计算机图形学工设Computer Graphics生产实习机自、工业Production Practice机电传动课程设计机自Course Design of Mechanical & Electrical Tra 微机原理课程设计机自Course Design of Principle of Microcomputer 机械制造技术课程设计机自Course Design of Mechanical Manufacturing Te 专业课课程设计机自Course Design of Speciality机构设计课程设计机自Course Design of Mechanism Design机械系统设计课程设计机自Course Design of Mechanical System Design 系统设计课程设计工业Course Design of System Design专业方向综合课程设计工业Couse Design of Speciality综合实验(一)机自Comprehensive Experiment综合实验(二)工业Comprehensive Experiment毕业实习机自、工业Graduation Practice毕业设计(论文)机自、工业Graduation Thesis机械原理课程设计包装、机自、工业Course Design of Machine Principle机械设计课程设计(一)机自、工业Course Design of Machine Design I包装Course Design of Machine Design II机械设计课程设计(二)机械设计基础课程设计材料、工设、测控Course Design of Machine Design包装动力学课程设计包装Course for Package Dynamics包装结构课程设计包装Course for Package Stucture包装装潢课程设计包装Course for Package Art认识实习包装Practice毕业实习包装Graduation Practice毕业设计(论文)包装Graduation Thesis认识实习测控Practice生产实习测控Production Practice测控方向课程设计测控Course Design of Speciality专业方向课程设计测控Course Design of Speciality光电子方向课程设计测控Course Design of Speciality电子设计CAD实践测控Practice of Electronics CAD综合实验(三)测控Comprehensive Experiment毕业实习测控Graduation Practice毕业设计(论文)测控Graduation Thesis生产实习材料Production Practice专业课程综合设计材料Comprehensive Design of Speciality Course塑料模具课程设计机自Couse Design of Plastic Mold冲压模具课程设计机自Couse Design of Ramming Mold综合实验(四)材料Comprehensive Experiment毕业实习材料Graduation Practice毕业设计(论文)材料Graduation Thesis工程图学课程设计机自、工设Course Design of Engineering Graphics写生实习工设Painting Practice认识实习工设Practice Cognition模型制作课程设计工设Course Design of Mould Making产品造型设计课程设计工设Course Design of Product Shaping产品设计课程设计工设Course Design of Product Design毕业实习工设Graduation Practice毕业设计(论文)工设Graduation Thesis工业设计概论工设Introduction to Modern Industrial Design包装CAD包装Package CAD防伪包装与条形码包装Anti_counterfeit Package Barcode广告与策划包装Advertising Strategy计算机绘图实训机自职Practice of Computer Aided Graphics液压与气动课程设计机自职Course Design of Hydraulic and Pneumatic Transmissio 可编程控制器原理及应用机自职Principle and Application of Programmable Controller虚拟设计与虚拟制造机试Virtual Design and Virtual Manufacturing成型设备机试Forming Equipments现代传动技术机试Modern Tranmission Technology空间啮合理论机试Theory of Spatial Engagement动态测量与建模机试Dynamic measuement and Modeling光电子理论与器件机试Photodectron Theory and Apparatus光电显示技术机试Photodectron Display Technology光纤传感技术机试Fiber Sensor Technology测控与系统机试Measurement & Control System虚拟仪器设计机试Virtual Instrument Design智能控制技术机试Intelligent Control Technology故障监测与诊断机试Fault Monitoring and Diagnosis精密计量与测试机试Precision Measurement and Testing检测技术机试Inspection Technique电路理论(一)-1Circuit Theorey I-1电路理论(一)-2Circuit Theorey I-2电路理论(二)Circuit Theorey II模拟电子技术电气自动Analogue Electronics数字电子技术电气自动Digital ElectronicsEDA技术电子通信自动电气Electronic Design Automation TechnologyP rinciple of Microcomputer微机原理电子通信自动电气电试电子通信自动Microcontroller Ⅰ单片机原理及应用(一)C Language Programming ⅡC语言程序设计(二)电子通信自动电气电试D ata Structure数据结构电子通信自动电气电试B asic Principles of Database System数据库基本原理电子通信自动电气电试电气工程Object-oriented Programming I面向对象的程序设计(一电试Object-oriented Programming Ⅱ面向对象的程序设计(二软件工程概论电气工程Introduction to Software Engineering数据通信与计算机网络电气工程Data Communication and Computer Network电试Microcontroller Ⅱ单片机原理与应用(二)电气工程学科概论电气工程电试Introuduction to Electric Engineering电机学-1电气工程Electrical Machines I电机学-2电气工程Electrical Machines Ⅱ电力拖动电气工程Electrical Towage电磁场理论电气工程Theory of Electromagnetic Fields电力电子技术电气工程电试Technology of Power Electronics电机学电试Electrical Motor自动化学科概论自动化Introduction to Automation电机与拖动自动化 Electrical Machines and Drives自动控制理论自动电气电试 Automation Control Engineering计算机控制技术自动化电气电试Computer Control Technology软件技术基础自动化Basic Sortware自动检测技术及仪表自动电气电试Automation Measurement Technology & Meter 过程控制工程电气自动电试Process Control Engineering现代控制理论电气自动电试Modern Control Theory运动控制自动化 Movation Control运筹学电气工程电试Operational Research人工智能导论(双语)自动电气电试Introduction to Artificial Intelligent (Bilingual)工业计算机网络(双语)自动电气电试Industrial Computer Networks (Bilingual)学科概论电子信息Introduction to Electric Information模拟电子技术(二)电试Analogue Electronics-II数字电子技术(二)电试Digital Electronics-II电子实验-1电信通信Electronic Experiment-I电子实验-2电信通信Electronic Experiment-II电工电子学非本院Electronics in Electrical Engineering电磁场与电磁波电信通信电试Electromagnetic Field and Wave通信电子电路电信通信电试Communication Electronic Curcuitry信号与系统电信通信电试Signal and Systems信息论与编码电信通信电试Information and Coding数字信号处理电信通信Digital Signal Processing学科概论通信工程Introduction to Communication通信原理电信通信电试Communication Principle操作系统电信通信Operation System微型计算机原理及应用电信通信Principal and Application of MicrocomputerP rinciple & Application of EDAEDA原理及应用电气通信自动电信电试单片机原理与应用(三)电气工程Microcontroller -ⅢDSP原理及应用通信电气电试Digital Signal Processors and its Application软件工程概论通信电信Introdrction to Software Engineering数据库原理及应用电气工程Principle & Application of Database面向对象程序设计电信通信Object-oriented Programming多媒体技术电信通信Multiple Media Technology发电厂电气部分电气工程 Electric Elements of Power Plants电力系统继电保护原理电气工程Power System Relay Protection电力系统分析电气工程电试Power System Analysis电力系统自动化电气工程电试Automation of Power电力系统高电压技术电气工程电试High-voltage Technology of Electric Systems 电气传动控制系统-1电气工程Electric Drive Control System-1电气传动控制系统-2电气工程Electric Drive Control System-2电力工程电气工程电试Electrical Power Engineering现代电气控制设备电气自动电试Modern Electrical Control Equipment开关电源技术电气工程电试Switch Power Supply Technology电机设计电气工程电试Design of Electrical Machinery微特电机电气工程电试Micro & Special Machinery电力市场概论电气工程电试Introduction to Electric Market计算方法电气工程电试Computational Method电气传动控制系统电试Electric Drive Control System模糊与神经网络控制电试Fuzzy & Neural Network现代电机控制技术电试Modern Electrical Machinery Control Technology现代电力电子学电试Modern Power Electronics计算机控制系统电试Computer Control System工程电磁场数字计算电试Numerical Calculation of Engineering Electromagnetic Field现代永磁电机理论电试Modern Permanent Magnetism Electrical Machinery Theory电力电子系统设计电试The Power Electronics System Designing智能仪表自动化Intelligent Instrument数字信号处理自动化电试Digital Signal Processing智能控制技术自动电气Intelligent Control Tcchnology控制系统仿真与CAD自动化 Control System Simulation and CAD虚拟仪器自动化电试Virtual Instrument新型检测技术自动化电试 New Type Measurement Technology自适应控制自动化电试Adapting Control嵌入式系统及应用自动化Inbedded System and Application模式识别自动化Pattern-Recognition专家系统控制电试The Expert System Controlling线性系统理论电试Linear Systematic Theory非线性系统理论电试Non-linear Systematic Theory嵌入式系统设计电试Imbedded System and Application现代控制技术专题电试Modern Control Technology Special Topic智能检测技术电试Intellectual Detection Technique现场总线技术电试Fieldbus Technology电子CAD电信通信Electronic Computer Aid Design数字图像处理电信通信电试Digital Image Processing数字语音处理电信通信电试Digital Voice Processing数字视频技术电信通信电试Digital Video Technology嵌入式操作系统电信通信Embedded Operation System控制系统设计CAD电试Control System Design CAD现代电路与系统分析电试Modern Circuit and System Analysis汉字信息处理电试Chinese Character Processing电子设计自动化电试Electronic Design Automation电试Nanometer Optical-electronic Component & Integrated Technology 纳米光电子器件及其集成多媒体技术电试Multimedia Technology模式识别原理与应用电试Pattern-recognition Principle and Application传感技术电信通信Sensor Technology计算机网络电信通信Computer Networks可编程控制器电信通信Programmable Logic Controller计算机仿真电信通信电试Computer Simulation程控交换技术电信通信Digital Switching Principle现代通信网基础电信通信Modern Communcation Network移动通信电信通信Mobile Communication锁相技术电信通信Phaselock Techniques光纤通信电信通信Fiber-optic Communication Principles微波技术基础通信工程Microwave Technology Foundation随机过程通信工程Random Process模拟电子课程设计电信通信自动电气电试Couse Design of Analog Electronics CircuitC ouse Design of Digital Electronics Circuit数字电子课程设计电信通信自动电气电试教学实践电试Teaching Practising课题调研电试Research of the Subject前沿学术讲座电试Lecture of Advanced Academic Lecture生产实习电气工程电试Production Practice毕业实习电气工程Graduation Practice毕业设计电气工程Graduation Thesis发电厂电气部分课程设计电气工程电试Electric Elements of Power Plants Course Design电力工程课程设计电气工程电试Electrical Power Engineering Course Design电气传动控制系统实验电气工程Lab of Electric Drive Control System现代电机控制技术课程设电试Modern Electrical Machinery Control Technology Course Design电试Modern Electrical Control Equipment Course Design现代电气控制设备课程设计算机控制课程设计自动化电气电试Computer Control Course Design自动化Movement Control System Design and Experiment运动控制系统实验、设计自动化Industrial Computer Networks Design工业计算机网络课程设计生产实习自动化Production Practice毕业实习自动化Graduation Practice毕业设计自动化Graduation Thesis过程控制工程课程设计电试Process Control Engineering Course Design电路理论课程设计电信通信Electronic Curcuit Theory Curricular Design通信电子电路课程设计电信通信电试Communication Electronic Curcuit Curricular Design通信原理课程设计电信通信电试Communication Principle Curricular Design单片机原理课程设计电信通信Microcontroller Curricular Design生产实习电信通信Production Practice毕业实习电信通信Graduate Practice毕业论文电信通信Graduate Thesis军训电信通信自动电气Military Training管理学原理市场营销Management Principle市场营销学市场营销Marketing生产运作与管理市场营销Manufacgturing Operation And Management商务交流市场营销 Busniess Operation组织行为学市场营销Organizational Behavior战略管理市场营销Strategic Management运筹学市场营销 Operation Research市场调查和预测市场营销Market Survey And Prediction消费者行为分析市场营销Analysis Of Consumer Behavior专业英语Ⅰ市场营销Course EnglishⅠ专业英语Ⅱ市场营销Course EnglishⅡ技术经济学市场营销Technology Economics现代企业管理Epterprise Manage推销学市场营销Selling公共关系市场营销Public Relations市场营销模拟决策市场营销Marketing Analog and Decision广告理论与实务市场营销Advertisement Theory and Practice服务营销学市场营销Serviece Marketing商务谈判市场营销Business Negociation质量管理市场营销Quality Management项目管理市场营销Project Management客户关系管理市场营销 Customer Relation Management国际贸易理论与实务市场营销International Trade Theory and Practice生产实习市场营销 Production Practice毕业实习市场营销 Graduate Practice学年论文(设计)市场营销Junior Paper Design市场营销课程设计市场营销Marketing Course Design毕业论文市场营销Graduate Paper微观经济学Microeconomics宏观经济学Macroeconomics会计学原理Princinpal of Accounting财务管理Managerial Finance统计学原理Statistics货币银行学Monetary and Banking税法Taxation中级财务会计Media Financail Accounting成本会计学Cost Accounting审计学Auditing管理会计Management Accounting高级会计学Advanced Financial Accounting财会专业英语Professional English for Accounting中级财务管理Media Fiancail Management高级财务管理Advanced Financial Management财务管理专业英语Professional English for Managerial Finance国际金融市场营销International Finance金融学Finance税务策划Taxation Planning企业投资学Princinple of Investment财务理论Finance Theory财务报表分析Analysis of Financial Statement证券投资理论与实务Theory and Application of Security Investment资产评估Valuation of Assets企业资源计划概论Introduction to ERP会计理论Accounting Theory金融企业会计Banking Accounting非盈利组织会计Non-profited Organization Accounting会计制度设计Accounting System Design国际会计准则International Accounting Standard保险精算Insurance Measure期权期货Options信用风险管理Credit Risk management信托与租赁Trust and Lease生产实习会计学Professional Practice生产实习财务管理Professional Practice毕业实习会计学Graduating Practice毕业实习财务管理Graduating Practice学年论文(设计)会计学Junior Paper Design学年论文(设计)财务管理Junior Paper Design财务管理信息系统课程设Course Design for Financial Information System会计学原理课程设计Course Design for Principle of Accounting毕业论文会计学Graduating Paper Design毕业论文财务管理Graduating Paper Design行政管理学Theories of Administration政治学The Principle of Politics社会学Principles of Sociology公共管理学Public Administration公共政策Public Policy企业文化Organizational Culture公共经济学Public Sector Economics行政法与行政诉讼法Administrative Law and Administrative Procedure管理心理学Management Psychology经济法学Law of Economy专业英语Special English行政组织学Administration of Organization社会调查原理与方法Theory and Method of Social Survey市政学Urban Public Administration人力资源开发与管理Development and Management of Human Resource 电子政务Electronic Government AffairsPublic Choice(双语)公共选择公共政策分析Public Policy管理定量分析Quantitative Methods For Public Administration公共部门绩效评估Performance Management of Public Sector第三部门管理Management of NGO比较政治制度Comparative Political System管理定量分析Quantitative Methods For Public Administration地方政府学Local Governments国家公务员制度The Civil Servant System当代行政体制改革专题Current Government System Reform社会保障Social Security公务员考试专题Public service Test领导科学Leadership Science商务谈判Business Negotiation行政伦理学Administration Ethics秘书学Secretarial Administration行政管理案例分析Case Study for Administration专业认识实习Special Social Practice公共管理案例分析Administrative Case Studies学年论文(1)Term Paper(1)学年论文(2)Term Paper(2)电子政务课程设计Practice of Electronic Government Affairs社会调查实践Intership of Social Survey公共行政外文原著选读Selected Readings for Public Administration and Managem 毕业实习Professional Social Practice毕业论文Undergraduate Thesis数据库原理信管Database Management Principle数据库应用信管Database Management Systems信息组织与管理信管Information Resource Management管理信息系统信管Management Information SystemsWEB技术信管Web Application Technology II面向对象程序设计信管Orient-objiect Programming Language信息调查与分析信管 Information Analysis信息系统维护与管理信管Information System Management计算机网络信管Computer Network System管理信息系统课程设计信管Practice of MIS信管Practice of MIS信息系统建设与管理课程网络营销电商Net Marketing电子商务金融电商EB Finance物流与供应链管理电商Logistic and Supply Management网站建立与维护电商Netsites Establishment and Maintenance电子商务安全管理电商EB Secure Management电商EB System Construct and Management电子商务系统建设与管理适用软件应用电商Application Software数据仓库与数据挖掘电商Data Warehouse and Data Mining客户关系管理电商CRMERP概论电商ERPA nalytical Chemistry分析化学(二)化学与环境工程学院,P hysical ChemistryⅠ-1物理化学(一)-1化学与环境工程学院,P hysical ChemistryⅠ-2物理化学(一)-2化学与环境工程学院,物理化学(二)Physical Chemistry II化工原理(二)高分子材料与工程Operation of Chemical Engineering(Ⅱ)O peration of Chemical EngineeringⅠ-1化工原理(一)-1化学与环境工程学院,O peration of Chemical EngineeringⅠ-2化工原理(一)-2化学与环境工程学院,高分子化学高分子材料与工程Polymer Chemistry高分子物理高分子材料与工程Polymer Physics高分子化学物理(三)轻化工程Polymer Chemistry and PhysicsⅢ高分子化学物理(一)材料科学与工程Polymer Chemistry and PhysicsⅠ高分子化学物理(二)化学工程与工艺Polymer Chemistry and PhysicsⅡ植物纤维化学轻化工程Plant fiber chemistry材料科学基础材料科学与工程Basic of Materials Science聚合物成型工艺学高分子材料与工程Polymer Molding Technics热工基础及设备材料科学与工程Pyrology and Equipment材料工艺与设备材料科学与工程Materials Technics and Equipment材料学概论材料科学与工程Introduction of Materials Science材料检测及分析材料科学与工程Materials Testing and Analysis材料科学研究方法材料科学与工程Materials Science Research Methods计算机在材料学中的应用材料科学与工程Application of Computer in Materials Science薄膜材料与技术材料科学与工程Membrane Materials and Technology材料信息学材料科学与工程Materials Information Science复合材料学材料科学与工程Composites Science高分子材料学材料科学与工程Polymer Materials Science精细陶瓷材料材料科学与工程Fine Ceramic Materials science生物材料学材料科学与工程Bio-materials无机非金属材料概论材料科学与工程Inorganic Non-metallic Materials Introduction材料成型装备的控制材料科学与工程Materials Molding Equipment Controlling材料合成与加工材料科学与工程Materials Synthesis and Processing材料化学材料科学与工程Materials Chemistry材料软件工程材料科学与工程Materials Software Engineering材料实验材料科学与工程Materials Experiment材料物理材料科学与工程Materials Physics复合材料测试技术材料科学与工程Composites Testing复合材料工艺及设备材料科学与工程Technics and Equipment of Composites复合材料结构材料科学与工程 Structure of Composites复合材料原理材料科学与工程 Theory of Composites光电子及信息功能材料材料科学与工程Photoelectron and Information Function Materials 计算机辅助材料设计材料科学与工程CAD for Materials Design纳米材料工艺材料科学与工程Nano-materials Technics无机非金属材料成型设备材料科学与工程Inorganic Non-metallic Materials Molding Equipment 胶凝材料学材料科学与工程Non-crystalline materials science无机非金属材料工艺学材料科学与工程Inorganic Non-metallic Materials Technics高分子材料研究方法高分子材料与工程Research Methods of Polymer Materials计算机的化工应用高分子材料与工程Application of Computer in Chemical Industry聚合物流变学高分子材料与工程Polymer Rheology高分子设计导论高分子材料与工程Polymer Design Introduction功能高分子高分子材料与工程Functional Polymer金属材料学高分子材料与工程Metal Materials涂料工艺学高分子材料与工程Dope Technics无机非金属材料高分子材料与工程Inorganic Non-metallic Materials液压与气动高分子材料与工程Fluid and Air Drive粘胶剂工艺学高分子材料与工程Glue Technics材料工程基础高分子材料与工程Materials Engineering Foundation复合材料工艺学高分子材料与工程Composites Materials Technics复合材料加工设备高分子材料与工程Composites Materials Processing Machinery复合材料科学基础高分子材料与工程Composites Materials Science Foundation聚合物共混改性高分子材料与工程Polymer Modifying by Blending模具CAD、CAM高分子材料与工程CAD and CAM of Mould模具加工工艺学高分子材料与工程Mould Manufacture Technics模具制造技术高分子材料与工程Mould Manufacture Technology塑料材料及助剂(一)高分子材料与工程Plastics Materials and Additives(Ⅰ)塑料机械高分子材料与工程Plastics Processing Machinery塑料模具高分子材料与工程Plastics Mould塑料制品检测与标准高分子材料与工程Plastics Products Testing and Standard橡胶材料及助剂高分子材料与工程Rubber Materials and Additives橡胶工艺学高分子材料与工程Rubber Technics橡胶制品设计与制造高分子材料与工程Rubber Products Design and Manufacture化工分离工程化学工程与工艺Separation Processes of Chemical Engineering化工设备基础化学工程与工艺Equipment of Chemical Engineering化工设计化学工程与工艺Design of Chemical Engineering化学反应工程化学工程与工艺Chemical Reaction Engineering环保概论化学工程与工艺 A Brief to Environment at Protection计算机在化工中的应用化学工程与工艺Application of Computer in Chemical Engineering科技英语化学工程与工艺English of Science and Technology生物工程导论化学工程与工艺Introduction to Bio-engineering专业讲座化学工程与工艺Special Cathedra催化作用及催化剂化学工程与工艺Catalysis and Catalyzer化工热力学化学工程与工艺Thermodynamics of Chemical Engineering精细化学品工艺学Ⅰ化学工程与工艺Fine Chemical Product TechnologyⅠ精细有机合成单元反应化学工程与工艺The unit reaction of Fine Organic Synthesis无机工艺相图化学工程与工艺Abio-Technology Phase Diagram无机化工工艺学化学工程与工艺Inorganic Chemical Technology有机化工工艺学化学工程与工艺Organic Chemical Technology环境化学环境工程Environmental chemistry大气污染控制工程环境工程Air Pollution Control固体废弃物处理与处置环境工程Solid Wastes and Disposal环境管理与环境法Ⅰ环境工程Environmental Management and LawⅠ环境科学概论环境工程General Principle of Environmental Science环境质量评价环境工程Evalution of Environment普通生态学环境工程Ecology给水工程环境工程Water Supply环境工程学环境工程Environment Engineering环境监测环境工程Environmental Monitor排水工程环境工程Wastewater Engineering水分析化学环境工程Water Analysis水污染控制工程环境工程Water Pollution and Control废纸再生利用技术轻化工程Used paper regeneration and utilization technology高得率制浆轻化工程High yield pulping process工程CAD轻化工程Engineering project CAD计算机的化工应用轻化工程Computer application in chemical engineering轻化工环保轻化工程Enviromental protection of light industry and chemical engineering 现代制浆技术轻化工程Modern pulping technology纸的性能与印刷轻化工程Paper properties and printing纸和纸板结构与性能轻化工程Paper and board structure and properties加工纸工艺轻化工程Paper coating technology有机合成与造纸化学品轻化工程Organic synthesis and papermaking chemicals造纸湿部化学轻化工程Wet end chemistry造纸原理与工程轻化工程Papermaking theory and engineering纸厂设计概论轻化工程An Introdution to paper mill design制浆原理与工程轻化工程Pulping theory and engineering制浆造纸设备轻化工程Pulping & papermaking equipment制浆造纸原理轻化工程Pulping and papermaking theory毕业论文(设计)Ⅰ化学与环境工程学院Graduation thesis or projectⅠ毕业论文(设计)Ⅱ化学与环境工程学院Graduation thesis or projectⅡ毕业实习化学与环境工程学院Graduation site training化工原理课程设计化学与环境工程学院Curriculum Design of Chemical Engineering Principles热工基础及设备课程设计材料科学与工程Thermal Foundation and Equipment Design认识实习化学与环境工程学院Cognition Practice。
对机械专业的认识英文作文1. Mechanical engineering is a field that deals with the design, development, and maintenance of mechanical systems. These systems can range from small devices like watches to large machines like airplanes. Mechanical engineers work to ensure that these systems are efficient, reliable, and safe.2. One of the key skills required in mechanical engineering is problem-solving. Mechanical engineers are often tasked with finding solutions to complex problems, such as improving the fuel efficiency of an engine or designing a new prosthetic limb. They must be able to analyze data, identify potential issues, and develop creative solutions.3. Another important aspect of mechanical engineering is the ability to work with different materials. Mechanical engineers must have a deep understanding of the properties of various materials, such as metals, plastics, andcomposites, and be able to select the best material for a particular application. They must also be able to design components that can withstand the stresses and strains of everyday use.4. One of the most exciting aspects of mechanical engineering is the opportunity to work on cutting-edge technology. Mechanical engineers are involved in the development of new technologies like 3D printing, robotics, and renewable energy systems. They work to improve existing technologies and develop new ones that can change the world.5. In order to be successful in mechanical engineering, it's important to have a strong foundation in math and science. Mechanical engineers use math to solve complex problems and science to understand the underlyingprinciples of mechanical systems. They must also be able to communicate effectively with other engineers, technicians, and stakeholders, both verbally and in writing.6. Finally, mechanical engineering is a field thatoffers a wide range of career opportunities. Mechanicalengineers can work in industries like aerospace, automotive, energy, and manufacturing. They can also work for government agencies, research institutions, and consulting firms. With the right skills and experience, mechanical engineers can advance to leadership positions and make a significant impact on the world.。
机械专业英文翻译Mechanical engineering is an essential field of engineering that deals with the design, manufacture, and operation of mechanical systems, ranging from simple machines to complex structures such as spacecraft. The field of mechanical engineering covers a wide range of topics such as mechanics, thermodynamics, manufacturing, robotics, and materials science. In this document, we will discuss the essential aspects of the mechanical engineering profession and the required skills for becoming a successful mechanical engineer.A Mechanical Engineer's ResponsibilitiesA mechanical engineer's primary responsibility is to design, develop, and test various mechanical products and systems. This could include anything from tiny mechanical components for electronic devices to massive industrial machinery. It is the mechanical engineer's responsibility to ensure that the products they design meet the required standards for performance and safety.Mechanical engineers must also work with other professionals in the creation of complex systems, such as designing an entire factory production line or a complete aircraft. This requires the ability to communicate effectively with other engineers and professionals to ensure the smooth running of themanufacturing process. Mechanical engineers must also be skilled in project management, as they may be responsible for overseeing large projects from start to finish.Required Skills for a Mechanical EngineerMechanical engineering is a challenging profession that requires a wide range of skills. Some of these skills include:1. Analytical skills: Mechanical engineers must have strong analytical skills to be able to examine complex systems and identify problems or inefficiencies.2. Creativity: Mechanical engineers must be creative to develop innovative solutions to complex engineering problems.3. Technical knowledge: A mechanical engineer must have a strong foundation in mathematics, physics, mechanics, and materials science to be able to create and analyze mechanical systems.4. Problem-solving skills: A mechanical engineer must have excellent problem-solving skills to identify and resolve problems in mechanical systems.5. Communication skills: Mechanical engineers must be able to communicate effectively with other professionals to ensure that the entire engineering team is on the same page.6. Project management skills: A mechanical engineer must be able to manage large engineering projects and collaborate with other team members.ConclusionIn conclusion, the mechanical engineering profession is a critical field of engineering that involves designing and creating mechanical structures, devices, and systems. Mechanical engineers are responsible for ensuring that the products they design meet the required standards for performance and safety. To be a successful mechanical engineer, you must have strong analytical skills, excellent problem-solving skills, technical knowledge, project management skills, and be an excellent communicator.。
SUPPORT STRUCTURE VISUALIZATIONIN A VIRTUAL REALITY ENVIRONMENTGeorges Fadel, Darren Crane, Larry DooleyMechanical and Bio–engineering DepartmentsRobert GeistComputer Science DepartmentClemson UniversityClemson, South CarolinaABSTRACTThis paper describes how a link between Virtual Reality and Rapid Prototyping was established at Clemson to enhance the designer’s understanding of manufacturing issues. It concentrates on the topic of support structures for rapid prototyping processes. The paper presents a survey of the litera-ture in the area of Virtual Reality and discusses some of the issues of translating an STL model into the appropriate format for Virtual Reality. Too often, the support structures are either missing, or placed in locations that do not really require support. Visualizing these support structures is a tedious task, rarely performed, and problems are not discovered until the part is built. Virtual Reality is pro-posed as a tool to help designers and manufacturing engineers see and identify these problems before building the part. The virtual environment also provides the designer with a tool that was never dreamed of. The ability to penetrate a design, study it from inside or outside, scale it to a size which allows such interaction is only now possible with virtual reality. The presentation will highlight some of these benefits which allow virtual prototyping before physical prototyping is started.INTRODUCTIONSupport structures are a necessary evil of many rapid prototyping or free form fabrication technologies. Typically, some support is needed to raise the object from the base platform to enable easy removal, and overhangs need support to prevent warpage and sagging. The support generation has been studied by many researchers, and algorithms to generate the support structures exist [7][8]. These algorithms operate on the CAD model and result in a file which is merged with the original CAD model. Too often, algorithms do not consider certain features of complex parts and the support structures can be either missing, or placed in locations that do not really require support. Typically, problems are not discovered until the part is built.Visualizing the support structures and the CAD model is possible on today’s CAD stations. Fig-ure 1 illustrates a view on a two dimensional screen of an object supported and ready to be sliced.This image is a screen capture of the CIDES package developed at Clemson to manipulate CAD files and prepare them for building on an RP machine [9]. One limitation of this and all existing environ-ments is the two dimensional representation of a three dimensional object. Rotating an object on the screen cannot be compared to having a prototype in hand and coordinating the eye – hand rela-tionship to detect potential problems. Virtual Reality removes the two dimensional representation barrier and allows the designer to hold a virtual object represented in a CAD drawing, to rotate it, to illuminate it where needed and to detect errors and hopefully correct the errors stemming from support structures, all in three dimensions.Figure 1. View of Object With Support on 2D ScreenPresently, at Clemson University, an object designed on a CAD system and prepared for the rap-id prototyping environment, i.e. formatted in the industry standard STL format, can be directly translated and displayed in a virtual environment. The ability to visualize the CAD prototype in the virtual environment, penetrating the prototype, examining it from different angles and eventually manipulating it, offers significant benefits to the designer and to the Rapid Prototyping user. This technology will reduce the time of verification of CAD models before building them on the RP sys-tems. Our objective is to eventually develop tools to identify missing support structures, to add sup-port structures where needed, and to remove useless support structures from the final model. Clear-ly, we are not yet at this stage, however, with the present interface, the user can verify that the support structure is applied where needed.This paper describes how a link between Virtual Reality and Rapid prototyping was established at Clemson. It discusses some of the issues of translating an STL model into the appropriate format for Virtual Reality. It also speculates on the potential impact of the technology on Rapid Prototyping.PREVIOUS WORKVirtual Reality is a concept which is very attractive to magazines such as Popular Science, Popu-lar Mechanics, and Science. Speculations about its usefulness and its impact on our lives are ram-pant, and the burgeoning of journals and magazines devoted to the subject shows its appeal to the community at large. Articles dealing with Virtual Reality and engineering report on the issues of training [1, 2, 3], flow visualization (wind tunnel and flow visualization)[4], maintenance [5], ergo-nomics and some applications of CAD[6]. The issues of virtual reality and manufacturing are men-tioned in a number of articles [2, 3, 6], but technical papers are scarce.Training using Virtual Reality is the realm of defense related activities. The US Navy, the Air Force and other services, use VR based flight simulators to train pilots; battlefield simulations were developed using actual terrain data during Desert Storm. [1, 2, 3] Potential applications to train automobile drivers and pilots using the technology are proposed, probably under development and possibly used in a number of sites. The reference on Caterpillar’s use of CAD based models for train-ing [6] shows the potential of the technology. Users test virtual models before the prototypes are built. This virtual testing process allows the designer to study the ergonomics of novel designs and modify the models if needed to satisfy the customer or user.Boeing’s work on design and maintenance using virtual reality [5] on the Boeing 777 has been described and talked about in a number of magazines, newspapers and articles on the Internet. They used the virtual environment to ensure that parts could be accessed and easily removed during main-tenance. The plane is reputed to be the first aircraft designed without the use of a full physical mock–up.Applications of computer aided design (CAD) in a virtual environment are practically non–ex-istent. Trego and Magleby [11] described attempts at connecting a power glove to an existing CAD system (Parasolids). They pointed to the ability to interface with a CAD system and identified weak-nesses in the glove interface. Their work is the first work directed towards providing a better inter-face to CAD systems using some of the VR technology. Their expectations of the technology are very high. They illustrated the ability to generate free form surfaces from hand motions in the virtual space. Dai [12] from the Frauhofer Institute in Germany showed how a virtual glove could be used to affect surfaces in a virtual environment. The glove was used to modify the shape of cubes by either pushing on the surface, or by using the glove as a tool to shape a block that seemed to be made out of play–dough. Both discussed accuracy problems in the operations in the virtual environment, but indicated the need to pursue research in the area. Sandy Ressler from NIST published a report [13]on the application of virtual reality to Manufacturing. The examples cited earlier are all summarized in this report. A very recent report from the National Academy of Sciences (Sept 20, 1994 news release on internet) recommends the government should “vigorously pursue a broad–based program of research in virtual environments” that go well beyond those available in the entertainment indus-try. The report identifies four areas that show the most promise: training, hazardous operations, medicine and healthcare, and design, manufacturing and marketing. This paper targets the fourth area, the one which directly affects industry and productivity.In the area of software support for Rapid Prototyping, a wealth of information is available. The authors and their colleagues at Clemson University were involved in several papers related to sup-port generation [7][8], optimal orientation[10][14]. These efforts show the significance of the sup-port issue. Thus, any tool that helps the designer get a better understanding of the part, of the support needed to build the part, contributes to the shortening of the time to market and results in an improve-ment in the quality of the built object.The paper illustrates next some of the capabilities of the Virtual environment and then explains the procedure used to convert an STL file to a VR formatted file before commenting on the signifi-cance of the work and its benefit to industry.IMPLEMENTATIONRapid Prototyping is the result of a desire to build parts by material addition rather than subtrac-tion, and to control the machine that makes the parts directly from the computer. In order to achieve this goal, geometric modelers (surface based and solid based) were given the capability to generate files that are easy to operate mathematically upon. The tessellation representation is one that approx-imates a surface by a number of triangles of various sizes. Once this approximation is performed, it is relatively straightforward to generate slices that represent the intersection of the triangles with a horizontal plane, and surfaces inside a solid can be hatched to solidify a resin or sinter a powder.Presently, an object designed on a CAD system and prepared for the rapid prototyping environ-ment, i.e. formatted in the industry standard STL format, can be directly translated and displayed in the virtual environment. Why would such a feature attract designers and manufacturing engi-neers? Because of the ability of the brain to interact with visual information without input from the hands. The user is immersed in the object, he or she can walk around it, inside the object, look up, down, sideways, and see features that are not directly accessible using two dimensional representa-tions of a three dimensional object.THE VR / STL CONNECTIONTranslating an object from the STL format generated by CAD systems to the VR space is facili-tated by the wealth of information held in the STL file format. A STL file consists of a list of triangles in 3D–space. Each triangle definition contains coordinates in 3D–space for each point of the triangle as well as a 3D–space vector defining the normal of the triangle (Figure 2). This formatis ideal for Virtual Reality since the representation of objects in VR is itself a tessellated representa-tion....facet normal 0.000000e+00 0.000000e+00 1.000000e+00outer loopvertex 2.029000e+00 1.628000e+00 9.109999e–01vertex 2.229000e+00 1.628000e+00 9.109999e–01vertex 2.229000e+00 1.672000e+00 9.109999e–01endloopendfacet...Figure 2. Example ASCII STL File.The VR application reads in the STL file consisting of a list of triangles which represent the object to be built in rapid prototyping. Note that the three points are given in order to specify the direction of the outward normal. The right hand rule is used. First, minimum and maximum points (in x, y and z) for the object are calculated for scaling and translation purposes. The triangles are then translated and scaled such that (0,0,2) becomes the center of the object and the object fits into a 4x4x4 cube. The unit is not important, but to get an idea of the size of an object, the space represents a four foot cube volume. The Z dimension originates at the transmitter which is located above the person in the middle of a room and points downwards towards the floor. Translating the object has the effect of centering it in the VR space, just below the tracking transmitter at the user eye level. Scaling the object to fit the VR space tracking range is necessary such that all objects do not extend beyond the ability to track the users movements, and are large enough to be useful to the user.OpenGL is used for all the VR graphics. OpenGL directional lights are positioned beyond the VR tracking range (a distance of 10 from (0,0,0)), and pointed toward the object center (0,0,2). The triangles are drawn using an OpenGL compiled call list to facilitate real time updates. This has the effect of imposing static lighting model on the object while still allowing real time changes of eye-point and viewport.As the users movements are tracked in real space, coordinates representing the users position and vectors representing the users pitch, roll, and yaw are passed via a serial port to the computer. This input is fed to OpenGL calls to change the eyepoint and viewport, and then the OpenGL com-piled list is called to redraw the object in VR space (Figure 3). This code shows the power and sim-plicity of the OpenGL code, this is all what is needed to update the image when the user turns the head to point to some other point. The image is recalculated and then sent to the user’s head mounted display. Using a Silicon Graphics Onyx as the compute engine, a rate of well above 30 updates per second for objects consisting of 45,000 triangles or less can be maintained. Above 45,000 triangles the refresh rate drops to below 30 updates a second; but despite the apparent lag, the system is still quite usable.–––lookatpoint_draw_stl(eye, lap, viewup, list)float eye[3], lap[3], viewup[3];int list;{int i;glMatrixMode(GL_PROJECTION);glPushMatrix();gluLookAt (eye[0], eye[1], eye[2], lap[0], lap[1], lap[2], viewup[0], viewup[1], viewup[2]);for (i = 0 ; i < number_objects; i++) glCallList(i+1);glPopMatrix();}–––Figure 3. C Code for VR View Updates.In order to allow the user to distinguish between the original part and the support structure, color coding is used. Essentially, different colors are used for the part and the support which provides the user with the visual feedback needed to identify the location of added structure. Figure 6. illustrates the fan object shown in figure 1 as seen from within the virtual space. In this case, the user can basi-cally place his or her head inside the part and make sure the support is located where needed. Missing support is also very quickly identified and the feedback can be used to modify the support generation program.Once the object is appropriately scaled and positioned, the user wears the head mounted display (HMD) which is basically two screens, one for each eye, each one displaying a slightly different view of the object to give a 3D effect. The head mounted display has an emitter mounted on top. The position and orientation of the head is then captured by a stationary receiver, and this information is used to recompute the view point and direction for the image. A recent addition to the system allows us to hold a three dimensional mouse. The mouse operates on the same principle as the HMD,Figure 4. View from Below the Support Structure in the VR environmentand by orienting the mouse, and depressing mouse buttons, the user can fly through a virtual object. How is this information used to interact with the object? Presently, the user can examine an object from any side, inside or out. To interface with the STL file, we are modifying the file structure such that each point is represented uniquely, with the appropriate pointers to the triangles formed by the points. Once this is accomplished, the mouse will be used to point to a particular point in the 3D space. The original point or triangle identified will be flagged in the modified STL file, and the correction will be done subsequently.SIGNIFICANCE AND BENEFITSHolding an object in one’s hand, and rotating it in order to study it, to understand the way it is assembled or designed can only be performed with a physical prototype. The CAD representation of a design on a computer screen, even three dimensional and solid based, is far from giving the de-signer the visual to hand coordination needed to truly assess a design. We propose the development of a true 3D CAD CSG system for mechanical design. The system is based on a virtual environment in which the user creates solids by performing solid operations as on a CAD system. These solids are however created like an assembly of building blocks in a three dimensional virtual environment.The ability to visualize the CAD prototype in the virtual environment, penetrating the proto-type, examining it from different angles and eventually manipulating it, offers significant benefits to the designer and to the mold maker or tool maker. This technology will reduce the time of market of products by drastically reducing if not eliminating the iterative process of design and manufactur-ing. The designer can not only study the part he or she is designing, but also try fitting it, design tools to make the part, and ensure that the prototype is as close to the final product as possible.In this area of design and manufacturing, rapid prototyping processes have established them-selves as essential contributors to the quest to produce parts rapidly. Whether parts are directly formed in the RP machines, or molds are created from the RP parts, the time to market of a product has the potential to be significantly reduced. This technology gives the designer more time to mature the product and reduces if not eliminates the communication gap between design and manufactur-ing. Issues of accuracy, materials, and size are still, and will continue to be researched to improve the parts manufactured, but the available technology is producing results today. The link between computer aided design (CAD), specifically in a Virtual Environment and RP significantly enhances the designer’s productivity.BIBLIOGRAPHY[1] Kozak, J.J., Hancock, P.A., Arthur, E.J. and Chrysler, S.T. “Transfer of Training from Virtual Real-ity” Ergonomics, 1993, V ol 36, No.7, 777–784[2] Bricken, M. “Virtual Reality Learning Environments: Potentials and Challenges.” Human InterfaceTechnology Laboratory, University of Washington, Seattle, W A, 1991.[3] Nash, I. “Visions for a Braver World. Virtual Reality Computer Simulations as an Aid to TeachingScience”. Times Educational Supplement, n.3923, p12, Sept 6, 1991.[4] Robertson, G. Card, S., Mackinlay, J. “The Information Visualizer.” Proceedings of CHI 91. ACM,NY. pp 181–188, 1991.[5] Adam, J. A., “Virtual Reality is for Real” IEEE Spectrum Magazine, Vol 30, No 10, October 1993,pp 22–29.[6] Tanner, S., Miller, K. “The use of High Fidelity CAD Models as the Basis for Training on ComplexSystems”, Proceedings of the 1993 conference on Intelligent Computer–Aided Trainingand Virtual Environment Technology, NASA Houston,[7] Kirschman, C. F., Jara–Almonte, C.C., Bagchi, A., Dooley. R.L. and Ogale, A.A. “Computer AidedDesign of Support Structures for Stereolithographic Components” Proceedings of the 1991ASME Computers In Engineering Conference, Santa Clara, pp 443–448, August 1991.[8] Kirschman, C. F., Namboodri, C., Jara–Almonte, C.C., Bagchi, A., Dooley. R.L. and Ogale, A.A.“Stereolithographic Support Structure Design for Rapid Prototyping” Proceedings of theSecond Rapid Prototyping Technology Conference, Dayton OH, June 1991.[9] Kirschman, C.F., Jara–Almonte, C.C., Bagchi, A., Dooley. R.L. and Ogale, A.A. “The ClemsonIntelligent Design Environment for Stereolithography” Proceedings of the Second RapidPrototyping Technology Conference, Dayton OH, June 1991.。