| National_Physical_Laboratory_(UK)_Surface_Technology_Group_-_Friction_and_Wear A good access point to the tribological research activities of the NPL's Surface Technology Group. Information on publications and technical workshops is provided. |
| Neale_Consulting_Engineers Tribology consultants focusing on design evaluation, failure investigation, engineering training and expert witness services. |
| Petrotest_GmbH Manufacturer of test equipment for petrochemistry and tribological evaluation. |
| Phoenix_Tribology_Ltd Offering consulting services in tribological test design and the Plint range of tribology test machines and instruments |
| Precision_Ceramic_Balls A useful source of precision ceramic balls for tribological test applications |
| Society_of_Tribologists_and_Lubrication_Engineers Technical association providing industrial interchange of today's fast-moving developments in lubrication theory and practice. |
| Surface_Engineering_and_Tribology,_KU_Leuven,_Belgium Research group on surface engineering and tribology. Investigating self-lubricating coatings and bulk materials, tribo-reactive materials, tribo-corrosion and fretting problems in engineering applicat |
| Swanson_&_Associates_Consulting_Corp Provides engineering consulting support aimed at improving products by identifying, managing and running durability tests that accurately access the processes of wear and fatigue. |
| Tribo-Corrosion_Network Access point for the TriCORR Network, which was established to link researchers interested in tribo-corrosion. |
| Tribo-Fatigue_Home_Page Tribo-Fatigue - the science concerned with wear-fatigue damages and fractures of active systems of machines and equipment |
| Tribologie_-_France Providing useful information and links for tribologists in France and the Francophone world. |
| Tribology_Consultant Consulting services provided in the areas of friction, wear, and lubrication. |
| Tribology_Research_Group_at_the_University_of_Sheffield Research, Teaching and Consultancy in a wide rage of tribology related areas. |
| Tribology_User_Center_at_ORNL Offers short-term, collaborative tribology R&D projects with U.S. industry and universities through the HTML User Program at ORNL. Emphasis on tribo-testing materials and surface treatments. |
| Tribology-ABC A web site providing a forum for students and lecturers to share ideas on tribology research. The site also includes useful software for calculating a wide range tribological contact conditions. |
| Vito_Materials_Technology Research activities include development of materials (coatings and ceramics) and surface treatments for wear resistant and low friction surfaces. Consultancy and tribological testing services are also |
| The_Concept_of_Regressive-Dynamic_Taxation Introduces the concept of regressive-dynamic taxation, which suggests economic growth incentives and legalization of the shadow sector in transition economy countries. |
| The_Eastward_Enlargement_of_the_Eurozone Provides description and results of an international three-year research project on the eastward enlargement of the eurozone (2001-2004). |
| Economic_Growth_-_Paul_M_Romer An introduction to new growth theory from The Fortune Encyclopedia of Economics. |
| Global_Macroeconomics Academic research as well as links to issues related to global macroeconomics. |
| New_Macroeconomic_Model Develops a macroeconomic model based on a new price theory. |
| New_Open_Economy_Macroeconomics Links to research papers in the field of open economy macroeconomics. |
| Real_Business_Cycles Papers on real business cycle theory and quantitative macroeconomics. |
| Recent_Macroeconomic_Reports_and_Data Recent reports and data on world economy and national economies of OECD countries. |
| Animal_Enumerations Enumeration on regular tilings of the Euclidean and Hyperbolic planes. |
| Anna\'s_Pentomino_Page Anna Gardberg makes pentominoes out of sculpey and agate. |
| Arnab\'s_Pentominos_Puzzle Fast Pentominos puzzle solver, works on DOS/Windows platform. Free downloads. |
| Blocking_Polyominos Rodolfo Kurchan searchss the smallest polyomino such that a particular number of copies can form a blocked pattern. With solutions. |
| Canonical_Polygons Ronald Kyrmse investigates grid polygons in which all side lengths are one or sqrt(2). |
| Christopher_Monckton\'s_Eternity_Puzzle Rules, the solution by Alex Selby and Oliver Riordan, other resources and links. The puzzle is made up of 209 pieces of polydrafters, each one is a combination of 12-30/60/90 triangles. |
| Counting_Horizontally_Convex_Polyominoes Journal of Integer Sequences, Vol. 2 (1999), Article 99.1.8. Defines and counts horizontal convexity. |
| Cynthia_Lanius\'_Lesson__Polyominoes_Introduction From tetris to hexominoes, Cynthia explains them in color. |
| Dancing_Links Don Knuth discusses implementation details of polyomino search algorithms (compressed PostScript format). |
| A_Dissection_Puzzle T. Sillke asks for dissections of two heptominoes into squares. |
| Equilateral_Pentagons Jorge Luis Mireles Jasso investigates these polygons and dissects various polyominos into them. Animations show cases of infinite solutions. |
| Eternity_Page Alex Selby's page with a description of his solution method, with illustrations in .png and .pdf files. |
| Flexagons Conrad and Hartline's 1962 article on Flexagons. |
| Flexagons Folded paper polyiamonds which can be unfolded to show hidden faces. Make interesting school projects. |
| Gamepuzzles Polyomino and polyform games and puzzles manufactured by Kadon Enterprises Inc. |
| The_Geometry_Junkyard__Polyominoes Numerous links, sorted alphabetically. |
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