Resources

GeoSyntec-SGI GeoSyntec-SGI- USA. Soil-geosynthetic interaction testing services for the geotechnical industry. Tension and seam testing. Compression, direct shear and pullout testing. Masonry … Geospec, Ltd Geospec, Ltd- UK. Independent laboratory for testing of geosynthetic and geotextile materials. Lists of standard tests for fabrics, membranes, clay liners, composites and grids. CRT Laboratories, Inc CRT Laboratories, Inc- USA. Independent testing laboratory for polymers, composites, geosynthetics and plastics. Complete testing programs for geomembranes, geotextiles, geonets a… Keantan Laboratories Keantan Laboratories- USA. Laboratory and field testing services for environmental and geotechnical projects. Landfill construction quality control and materials testing. Complete… Advanced Terra Testing, Inc Advanced Terra Testing, Inc- USA. Physical testing of soil, rock and geosynthetic designs and materials. General index testing, hydraulic properties and large scale performance te… GeoSystems Consultants, Inc GeoSystems Consultants, Inc- USA. Geotechnical engineering and testing laboratory. Standard and specialized procedures for determination of physical and engineering index and perf… Terracon Terracon- USA. Engineering and testing services for construction, environmental and industrial projects. Laboratory testing services for geosynthetic membranes, fabrics, grids and… Aerodynamics for Students Aerodynamics for Students- A web textbook from the University of Sydney that covers undergraduate-level aerodynamics, fluid dynamics, aircraft performance and propulsion. Investig… Javafoil Javafoil- Software program which uses several traditional methods for airfoil analysis including potential flow and boundary layer analysis. Institute of Aerodynamics and Flow Technology (AS) Institute of Aerodynamics and Flow Technology (AS)- German research institute. Aerodynamics of Bicycles Aerodynamics of Bicycles- A practical introduction to the Aerodynamics of ground vehicles. Mark Ketchum's Bridge Aerodynamics Page Mark Ketchum's Bridge Aerodynamics Page- A discussion of bridge aerodynamics, with particular emphasis on suspension bridges and the Tacoma Narrows disaster of 1940. Airfoils by Chris Heintz Airfoils by Chris Heintz- A textbook that discusses airfoil aerodynamics as applied to STOL aircraft. Aeronautics Learning Laboratory -- (ALLSTAR) Network Aeronautics Learning Laboratory -- (ALLSTAR) Network- A NASA generated site with instructional resources for students and educators. Includes sections on the history and principle… R&D Team R&D Team- Provides boundary element simulation software for acoustics and electro-acoustics. AcouSTO (Acoustics Simulation Tool) AcouSTO (Acoustics Simulation Tool)- Open source boundary element method solver for the Kirchhoff-Helmholtz Integral Equation. Plan wave scattered by a unit sphere. Dmitry Abrosimov: Underwater Acoustics Dmitry Abrosimov: Underwater Acoustics- Describes a set of programs for computer simulation of sound fields in the ocean. Also features computer-generated images of simulated seas… Sonic Beacon Sonic Beacon- Sound card based loudspeaker test and analysis program for Windows. It will perform frequency and phase response, harmonic and intermodulation distortion, impedance,… Vallen VisualAE Vallen VisualAE- For combined analysis of statistical acoustic emission and waveform data. Inertia Manipulation Through Metric Patching Inertia Manipulation Through Metric Patching- E-print which presents the exact solution for the stress-energy tensor of a spherical matter shell of finite thickness that will patc… Gravitomagnetic Effects Gravitomagnetic Effects- Introductory article by Gerhard Schäfer (Jena University) about the ways that rotating bodies affect spacetime (and hence the propagation of light and par… Solving Einstein's Equations in Three Dimensions Solving Einstein's Equations in Three Dimensions- Mathematica notebook showing how to plot light cones in two plus one spacetime dimensions with a point mass. By Patricia Schwarz. Are There Pictorial Examples of Covariant and Contravariant Vectors? Are There Pictorial Examples of Covariant and Contravariant Vectors?- Present pictorial means of distinguishing contravariant vectors (or simply vectors) from covariant vectors (o… Nihao International Nihao International- Offers personalized study using Skype, to learn to communicate in Chinese. eChineseLearning eChineseLearning- Provides one-to-one live online Chinese lessons using Skype. Includes a self-assessment and free trial. Chineseathome Chineseathome- Offers online one-on-one Chinese learning environment with audio, video and file sharing of learning materials. Entry level and custom lessons. Chinese Grammar Index Chinese Grammar Index- Index of Chinese grammar rules. Includes lessons. Perapera Popup Translator Perapera Popup Translator- Chinese Popup Translator for Firefox. Works with both Simplified and Traditional characters. Pinyin Practice Pinyin Practice- Provides pronunciation exercises for Chinese pinyin. Mandarin Essential Grammar Mandarin Essential Grammar- Chinese grammar explained, including examples.