www.science.dmoz2007.org

Plasma recombination lasers in rapidly cooled stellar atmospheres.
Y.P. Varshni Department of Physics, University of Ottawa, Ottawa, Canada, K1N 6N5 Accepted in 1st Crisis in Cosmology Conference, Portugal, June 23, 2005..Abstract We have found that in the absorption-line spectra of two quasars, 0237-233 and HE 1122-1648 there are a large number of common lines in the observed frame (earth frame). The number of common lines in the interval 3716-4116 is 64 while the expected number from the chance- coincidence theory is only 49.7 3.8. An explanation is

Discussion will focus on the nonlinear interactions between turbulent convection, rotation and magnetic fields in the interiors of stars. From 6 September - 17 December, 2004 at the Isaac Newton Ins

In-depth lecture notes that provide information on how to derive properties of stars, based on observation.

Learn about the fascinating universe, especially stars at this ThinkQuest site. There are two versions of the site to choose from, one for younger kids (under 12), and one for older kids (13 and over

Sightings of extrasolar planets are increasing.

Explains the study of a star's oscillations to determine the interior chemical composition.

A small Hubble telescope image gallery of Quasars.
Party is almost over. Astronomers. (More).10. Hubble Image Showcases Star Birth in M83, the Southern Pinwheel.A long-exposure Hubble Space Telescope image shows a majestic face-on spiral galaxy located deep within the Coma Cluster of galaxies, which lies 320 million light-years. (More).A beautiful new image of two colliding galaxies has been released by NASA& ,s Great Observatories. The Antennae galaxies, located about 62 million light-years from Earth, are shown in this composite.

Multimedia experience of flying by spaceship through the solar system. Visit each planet. Real space pictures from NASA. In English, French, Italian, Spanish and Russian. Recommended for kids.

Includes a section on spectral classification of stars.

Provides detailed information about stars: positions, proper motion, radial velocity, magnitudes, spectral class, color index, catalogue references, data about multiple star systems (i.e. orbital elem
The star data pages provides detailed information about all stars of the Bright Star Catalogue, about different types of variable stars and selected double stars. Each page contains the data of.The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991).as distributed by the Astronomical Data Center at NASA Goddard Space Flight Center position, proper motion, radial velocity, magnitude, spectral class, color index, catalogue references, double multiple star system data,

Star Journey. Journey through the stars with National Geographic Online. View the nighttime sky with popular National Geographic Star Chart...

Three high resolution star maps in .tif format for download. Tycho, Hipparcos and Yale bright star maps available.

Behavior of stars, generation of energy, their origin, and life cycle. Also includes a wide range of interesting pictures of galaxies and related phenomena that can be observed in the universe through
Automatic HTML conversion by Mark J Cox on Tue Jan 30 09 30 17 GMT 1996.Automatic HTML conversion by Mark J Cox on Tue Jan 30 09 30 23 GMT 1996.Automatic HTML conversion by Mark J Cox on Tue Jan 30 09 30 16 GMT 1996.

A guide to give a tour of the summer night sky.

All-text page on the various stages in the discovery and development of theories of white dwarfs, neutron stars and black holes.

How to design a magnetic levitation demonstrator using photodetectors and electronics to control an electromagnet.

Plenty of materials can be levitated in a strong magnetic field - from simple metals, liquids, and various polymers to everyday things such as various plants and living creatures (frogs, fish and a mo

A simple how-to for creating your own diamagnetic levitation experiments, complete with demonstration images and thorough explanations.

Organization working to expand high speed ground transportation in the United States.

The 17th International Conference on Magnetically Levitated Systems and Drives, Lausanne. The conference is aimed to present the existing industrialization status, the marketing and social aspects, an

Research Interests of Marc T. Thompson, Ph.D., System Design Consultant and Professor of Electrical Engineering.

Links to systems currently operational or under development.
University of Industry and Tsinghua University have suggested that a pilot route be built as soon as possible to continue and extend the testing of this system. It has some similarities with the Unimodal maglev system being developed in the USA..

Magnetic levitation research at the University of Nottingham, England.
Webs is a free, do-it-yourself website publishing tool. Signup now for free and get a free website, online photo album, webstore, blog, and more..2011 Webs, Inc. All Rights Reserved. Read the Webs Blog Join our facebook page Follow us on twitter.Webs is a free, do-it-yourself website publishing tool. Signup now for free and get a free website, online photo album, webstore, blog, and more..2011 Webs, Inc. All Rights Reserved. Read the Webs Blog Join our facebook page Follow us on twitter.

Magnetic levitation information, photos and links. Includes the article "What is a magnetic field?".

Site presents original and exclusive experiences relating to magnetic levitation, servocontrol, etc. for a hobbyist.
For the magnetic levitation (permanent magnets) and active devices for the stabilization consisting of a multipurpose printed circuit board wired as an analogical servo controller and linked to adequate sensor as input and magnetic coils field as output. A flat drilled aluminum foil covering up this assembly. The magnetic object floating over this base in this geometry (identified as 1, 6 geometries are tested) that consists of 2 sets of 4 permanent magnets inside a brass tube of sizes 15 mm

Magnetic levitation links. Also experiments by Bill Beaty. Part of Bill Beaty's extensive science site.
I m a science hobbyist and occasional exhibit designer for science museums. The multi-coil device shown in the photo was part of a prototype room-temperature superconductive table which never made it to a museum. I thought I d place it here so students and hobbyists could experiment with this strange maglev effect. The device in the articles is not trivial to build, so I would recommend it mostly for ADVANCED HIGH-SCHOOL LEVEL AND ABOVE. If you ve never built any electronic devices before, I

Design, development, manufacture and implementation of magnetic bearings. The company provides solutions where other bearings fail.

Discover what a real Maglev in operation looks like. Contains many pictures and ticket information.

The future is here, in Shanghai, where the world's first maglev is up and running, reports Ron Gluckman.
Sometimes so thick it sits like fog over the towers of Pudong? All questions without answers at this stage, but the Pudong planners are confident that China is changing fast enough for most, if not all, of the problems to melt away. They believe Shanghai and Pudong together will have the edge over Hong Kong. For a start, they say the new airport and the improved sea port will match Hong Kong for capacity and efficiency. And then there is the manpower, which is greater, less costly and

Magnetic suspensions and power electronics design.

Discussion group and news archive for those interested in low speed maglev ("urban maglev"), quiet trains designed for urban transit, with top service speeds usually under about 100mph.

Supplier of electronic design automation (EDA) tools for RF, DSP, and communication systems designers. Lists product information with online demonstrations.
Update our website, pages are often moved or replaced. Let us help you find the content you want..Because we continually update our website, pages are often moved or replaced. Let us help you find the content you want..Because we continually update our website, pages are often moved or replaced. Let us help you find the content you want..Because we continually update our website, pages are often moved or replaced. Let us help you find the content you want..Because we continually update our

Circuit Magic allows you to design simple electrical circuits, simulate and learn about basic electrical laws. Russian version, and translated English version available.

Electronic Design Automation (EDA) software. High frequency, Signal integrity, Circuit simulation, System simulation, and Electromechanical.
Built upon HFSS domain decomposition and 3D integral equation technology, this technique provides an ideal open truncation for the HFSS finite element solution through a direct integral equation based calculation of an open boundary condition. FE-BI combines the best of both methods the Finite-Elements Method ability to handle complex geometries and the Method of Moments direct calculation of the free-space Green function for accurate radiating and scattering solutions. With this new technology

Calculate the properties of arbitrarily shaped transmission lines.

Software solutions for RF and Microwave Design Eclipse 5 for circuit-level design SysCalc 5 for cascaded simulation
Prototype against the SysCalc outputs to ensure that the prototype performs as expected. A precision adjustment in SysCalc parameters and even specific parts could make a good product even better. Don t let time, small errors, or otherwise timely predictions slow business growth or production. Empower your design engineers with SysCalc efficient and accurate design tools..Hours 9 am to 5 pm (EST) Arden Technologies, Inc. P.O. Box 248 Goode, VA 24556.Hours 9 am to 5 pm (EST) Arden Technologies,

Provides information about IEEE std 1149.1 boundary-scan (JTAG) testing and in-system programming (ISP) tools.

Integrates electrical and instrumentation activities into a single seamless and secure environment for use in all phases of the plants life cycle, from estimate through to design and operation.
Sample drawings in pdf format, please visit our download page..

A library of MATLAB functions for design of control systems with maximized feedback that requires shaping the loop with a Bode step.

Suppliers of software tools for IC and wafer manufacturers. Provides ability to read, analyze and visualize semiconductor metrology data.

Listing AutoCAD-based software for electrical and control systems engineering.

Offers schematic design, inteconnect diagrams,harnessing, loom design, control systems layout and panel wiring. Lists products, services and solutions.
Structured. If you would like your local Account Manager to call you when its most convenient and answer any questions you have just provide us with a few contact details and we will be in touch..Cadtek and the Cadtek Logo are trademarks of Cadtek Systems Limited. All other trademarks are the property of their respective owners. Registered Address Cadtek House, Station Road, Furness Vale, Stockport, SK23 7QA. United Kingdom. (UK 02267028).In addition to live support, customers get full access to

Software products tackle motion-intensive applications such as SMT equipment, electronics assembly equipment, robots, and machine tools.
Award-winning products, providing continous product improvement and quality customer support..Interface A provides a wealth of new, high quality, on-demand data. The Data Management Solution Center is prepared to help Integrated Device Manufacturers develop systems to manage this large amount of data and feed Equipment Engineering Systems..If you would like to learn more about our products and or services, please contact our sales department. All Rights Reserved. Please report corrections to

Offers analog/RF circuit design resources and free software.
You are the owner of this web site and you have not uploaded (or incorrectly uploaded) your web site..You are the owner of this web site and you have not uploaded (or incorrectly uploaded) your web site..You are the owner of this web site and you have not uploaded (or incorrectly uploaded) your web site..You are the owner of this web site and you have not uploaded (or incorrectly uploaded) your web site..

For optimization and improvement of PI/PID-control loop tuning and plant efficiency.

Applications to manage product development. The industry segment is electronics and software.

3D electromagnetic field simulation.

A software package for the design of instrumentation and electrical systems.

modelling, simulation and rapid-prototyping within processes.

electronic circuit simulation with only a web browser needed. Based on Berkeley SPICE core and GNUPlot is used to visualise simulation results.

Freely-usable Java applets for digital filter design, including fractional-sample broadband delay and high-Q notch filters, as well as standard types.

Design and documentation of control systems.

Software for the complete design and documentation of electrical control and instrumentation systems.

A simple program for linear circuit analysis with AC, DC solutions and frequency (Bode) and time response plots.

Software for electromagnetic interference (EMI) analysis. Provides software information and lists services and news details.

Program system for the modeling of 3D arbitrarily shaped wire structures and for the computation and analysis of their electromagnetic behavior, including radiation and scattering problems.

FDTD 3D electromagnetic field simulator.

Micromagnetic Modeling Software for the disc drive industry, including "The Advanced Recording Model" and Magsimus.

Free finite element package for 2D planar/axisymmetric problems in low frequency magnetics under win9x/nt.
That Dr. Mark Hewitt has been named Senior Vice President of Strategy for its Technology Solutions Group (TSG). He will lead group business strategy, identifying and positioning the group for new opportunities in government and commercial markets..Haiti Disaster Relief How to HelpRelief to the victims of the earthquake in Haiti is on its way, and QinetiQ North America encourages everyone to join us in doing what they can to help. We think the American Red Cross is a good place to start they do

Offering thermal design for electronics including software, and consulting. Lists products, services, theory and articles.

Audio Design Software, featuring TubeCAD, SE Amp CAD, and Audio Gadgets. For audiophiles who love vacuum tubes.

Electrical engineering and scientific software.

Integrated software and hardware systems for measurement and control applications.

Predicts air flow and heat transfer at component, board and cabinet levels.
- combined with unlimited, best-in-class technical support to ensure your success..2010 ANSYS, Inc. All Rights Reserved.

Unique control solutions based on standardised software & hardware solutions.

Industrial programs for SCADA & Instrument use, Thermocalc, Startup

8085 Microprocessor Simulator, Cross Assembler, Karnaugh Maps, software copy protection.

Electronic design analysis tools for analog and mixed-signal circuits, ICA/4 windows, magnetics, and power supply.

RPN Calculator with 5 unique keypads: standard, engineering, magnetics, trigonometry, and convert. Also offering magnetic consulting.

IEEE Std 1149.1 boundary-scan (JTAG) testing and in-system programming of flash and PLDs.
That lets you actually see your boundary-scan applications superimposed on your board schematic and layout. It much more than a digital photograph of your board. Visualizer actually works with the design files exported from your CAD systems, so you re looking at the very schematics and layout drawings you re already familiar with. Visualizer will show you where you have test coverage and where improvement needed. And, when it time to troubleshoot a circuit board, at prototype debug, in the

Karnaugh Maps to design combinatorial circuits.
Largest circle around the group of adjacent bits. The output box always displays the prime implicant solution. Version 1.2 supports both Sum-of-Product and Product-of-Sum output formats. KarnaughMap 1.2 is a stand-alone Win32 executable that requires no DLLs to run. No Unzipping or installation required. Extremely intuitive and convenient. A must-have tool for the freshmen electrical engineering student.Download kmap12.exe (283KB) for Windows 95 NT XP (freeware).Thank you for your interest in

Electromagnetic code modeling for antennas and propagation. Offering software can be run via the Internet site without downloading.

Develops models and use behavioural simulation and finite elements analysis for global simulation using Saber and QuickField.
Vshutdown, before, after)) { if (before.= 0. n n) saber_message(TMPL_S_POSEQ ,instance(), ron) } if (roff.ron. n n) saber_message(TMPL_S_GT_PARM ,instance(), roff , ron) } if (tr.= 0. n n) saber_message(TMPL_S_POSEQ ,instance(), tr) } if (tf.= 0. n n) saber_message(TMPL_S_POSEQ ,instance(), tf) } if (fault_time_begin.tr. n n) saber_message(TMPL_S_GT_PARM ,instance(), fault_time_begin , tr) } if (fault_time_begin.tf. n n) saber_message(TMPL_S_GT_PARM ,instance(), fault_time_begin , tf) } if (td.=

Thermal resistance network analyzer program.

Simulation software specifically designed for power electronics and motor control.

Supplier of SuperNEC, EM Simulation software, SIG (Structure Interpolation and Gridding) and ASEP (Antenna Simulation and Evaluation Program).

Process Control Software developers
Can be guaranteed to be 100% secure. As a result, while we strive to protect your personally identifiable information, we cannot ensure or warrant the security of any information you transmit to us or receive from us. This fact is especially true for information you transmit to us via e-mail. We have no way of protecting that information until it reaches us. Once we receive your transmission, we make our best effort to ensure its security on our servers. Internally, we will restrict access to

QuickField software, Finite Element Analysis. electromagnetic, heat transfer and stress analysis.
Chapter 4, Model Geometry Definition , explains how to describe the geometry of the model, build the mesh, and define material properties and boundary conditions. Chapter 5, Problem Parameters Description , introduces non-geometric data file organization, and how to attach this file to the model. Chapter 6, Electric Circuit Definition , describes the circuit schematic editor. Chapter 7, Solving the Problem , tells you how to start the solver to obtain analysis results. Chapter 8, Analyzing the

Simulation of a digitally modulated carrier in presence of distortions and interferences.

Obsidian Software provides semiconductor verification tools
RAVEN (Random Architecture Verification Engine) is a robust random test generator for automating the creation of processor test sequences. RAVEN provides value as a proven, mature technology for generating random and valid stimuli in standard and custom processor cores. RAVEN is built upon pre-developed and custom made modules that can be included to expand functionality. Common processor features can be quickly added to RAVEN as well as custom requirements and architectural improvements in

Offers µPSim, an 8085 microprocessor simulator. A total software solution to replace the microprocessor kit or the in-circuit emulator.

Calculator for cellular network design. Shareware designed for use by planning and cellular system design engineers.

Offering computational electromagnetics analysis. An FDTD volumetric solution for Maxwell's equations and urban propagation analysis.

Radio Frequency Design Software.

A non-commercial PLC simulator, programmable by way of a high-level language.
. (Obs. como acontece com toda tecnologia, tudo ser em vo se o foco no for a felicidade humana.) A.s mais natural e compreensvel para os no-especialistas, e mais produtiva para os especialistas, tornando os programas de controle melhor estruturados, semanticamente mais significativos e naturalmente documentarizados, alm de potencialmente independentes de equipamento. Exemplo de um programa de controle muito simples escrito em LCE., um nome ou denominao, o qual poder descrever, de modo sinttico,

switch mode power supply design, PSpice simulation

High Frequency Electromagnetic Simulation Software
Papers from researchers at the University of Mass. Amherst, and is easily simulated on a desktop PC..High frequency EM analysis in the CST Studio Suites may be coupled to thermal analysis. In this example, EM analysis of a PCB-mounted microwave component is coupled to thermal analysis to determine heating from RF loss..Modeling antennas on large platforms presents practical challenges. In this note, the CST Asymptotic (A) solver is applied to see the effects of the platform on the antenna

Engineering Software for magnet, and electric motor design.

Offers a line of software modules and services for electronics products cost and performance analysis.
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PC based digital signal processing applications

Software for the characterization of piezoelectric, electrostrictive, ferroelectric, and antiferroelectric materials.

Technical information on RF and Transceiver Hazards.

TES offers a software CFD package(Eflo) for thermal simulation in electronics. References and case histories. Description of programme and consulting services.

Providing electronic design information, working evaluation downloads, and circuit models. Lists product and pricing information.
Semiconductors and other complex non-linear components. The SPICE models are complex, cumbersome, and take a long time to analyse - even on today& ,s hardware. ModelMaker takes a much more pragmatic approach to component modelling by generating compact, efficient and configurable device models from your own specification..ModelMaker is a set of applets which allow you to define a component model using the kind of information found on a data sheet. Once the definition is complete, you click on a

Web-Based Power and Environmental Monitoring products,
Download PDF The EnviroCube management system can increase the efficiency of any Computer Room Air Conditioning (CRAC) system. The EnviroCube system is a network-based monitoring and control unit which receives control information from a network console such as CAs EcoMeter software. The Cube includes two components The EnviroCube Main Unit The EnviroCube main unit is placed in the supply stream of your CRAC or CRAH unit. It measures the full spectrum of energy variables from your cooling unit

Loop optimization software. Offering PID controller tuning, process optimization, valve diagnostics, and control loop simulation software.

Electrical controls design software.
Experts in Online Communication and Branding. . Since 1996 we have been successful because we are experts in all facets of web development analysis, planning, . Actors Theatre Appoint VIA Studio.Database development using Microsoft Access via the Internet. Affordable custom written applications to your requirements. Free estimate quote. . Home, Free Estimate , About Us, Via Net,.BMP controls proximodistal outgrowth, via inductio. Development..BMP controls proximodistal outgrowth, via induction

Windows shareware application for the tracing, analysis, and printing of Bode diagrams, both asymptotic and real.

Real-time open systems for hardware-in-the-loop simulation, rapid controller prototyping, embedded controller testing.
Our customers needs. With that goal in mind, we ve compiled a list of frequently asked questions. If you do not find an answer to your question here, please fill out the contact form with your question so that we may address it..CUSTOMER SERVICE What are your hours for customer service?Our customer service hours are the same as our regular business hours.Monday through Friday, 9 a.m. to 5 p.m. Eastern Standard Time.You can reach us via e-mail at web@xanalog,or you can contact us through this web

Breadboard trainer, digital electronics simulations for Mac or Windows.

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