| Check_or_Generator_Matrices_of_Some_Linear_Codes Examples for q up to 9. |
| Classifying_Subspaces_of_Hamming_Spaces By P. R. J. Östergård. The following codes with minimum distance greater than or equal to 3 are classified: binary codes up to length 14, ternary codes up to length 11, and quaternary codes up to l |
| Constant_Weight_Binary_Codes Lower bounds (and in some cases exact values) for A(n,d,w), the size of the largest binary code of length n, distance d and constant weight w. |
| Covering_Codes The best known bounds on the size of binary covering codes of length up to 33 and covering radius up to 10. Compiled by Simon Litsyn. |
| Database_on_Binary_Quasi-Cyclic_Codes Interactive page to find the code parameters (generator polynomials and weight distribution) and references. |
| Dense_Sphere_Packings_from_New_Codes A table with the largest densities of sphere packings known to us in dimensions up to 200. |
| Information_about_Binary_Linear_Codes Database of information on binary linear codes of length n and dimension k with n <= 85 or n <= 204 and k <= 14. Searchable. |
| Isometry_Classes_of_Codes And other tables by Harald Fripertinger. |
| Lower_Bounds_and_Encoding_Circuits_for_Weakly_Self-dual_CSS_Codes A table of codes up to length 32 encoding up to 30 qubits. |
| Nonlinear_Binary_Codes Lower bounds (and in some cases exact values) for A(n,d), the size of the largest binary code of length n and minimal distance d. |
| Optimal_One-Error-Correcting_Codes Optimal binary one-error-correcting codes of length 10 have 72 codewords. Tables to supplement the paper published in IEEE-IT 45 by P.R.J. Östergård, T. Baicheva and E. Kolev. |
| Tables_of_Binary_Block_Codes Tables of bounds on the size of binary unrestricted codes, constant-weight codes, doubly-bounded-weight codes, and doubly-constant-weight codes. Compiled by Erik Agrell, Chalmers. |
| ADVANCE-10K Analysis of dendrochronological variability and natural climates in Eurasia over the last 10,000 years. Research by the University of East Anglia Climatic Research Unit. |
| Aegean_Dendrochronology_Project Site discusses the use of tree rings in dating and climatic reconstruction, as part of archeological studies. From Malcolm and Carolyn Wiener Laboratory for Aegean and Near Eastern Dendrochronology, a |
| Dendrochronology A brief primer on the subject of dating past events by looking at tree rings. |
| Euro_Catalogue Searchable database of European dendro-chronology, compiled by Dr Tom Levanic, Biotechnical faculty, Ljubljana, Slovenia. Information on laboratories, accessed via search or sensitive map. |
| International_Tree_Ring_Laboratory Dr. habil Martin Worbes' tree-ring research in temperate, tropical, and subtropical regions. |
| Laboratory_for_Wood_Anatomy_and_Dendrochronology,_Lund_University About the laboratory, current and past research activities, and links to other tree-ring websites, particularly in Europe. |
| Laboratory_of_Tree-Ring_Research,_University_of_Arizona Teaching and research in all aspects of dendrochronology. |
| Lamont-Doherty_Tree_Ring_Lab Scientists from the TRL are actively involved in pioneering research projects in many parts of the globe; from the high latitudes of both hemispheres to the low-latitude tropics of Asia and the Amer |
| Oxford_Dendrochronology_Laboratory An independent tree-ring dating laboratory concentrating primarily on the dating and analysis of standing timber structures. Projects, publications, the dated buildings register. |
| Rocky_Mountain_Tree-Ring_Research,_Inc_ Rocky Mountain Tree-Ring Research is a nonprofit research organization that provides expertise in tree-ring data collection and analysis. |
| Sheffield_Dendrochronology_Laboratory Teaching and research at the University of Sheffield. Includes "What is Dendrochronology?" and information about the lab's consultancy services and continuous master tree-ring sequence for England goi |
| University_of_Arkansas_Tree-Ring_Laboratory Research concentrates on the development of exactly-dated annual tree-ring chronologies from ancient forests worldwide. |
| University_of_Nevada_at_Reno_DendroLab A part of the geology department at the university. Page includes a downloadable statistical tool, GIS climate series mapping information, and fieldwork photos. |
| University_of_Western_Ontario_Dendrogeomorphology_Laboratory Information about people, facilities, and methods and results of research focused on the use of tree rings as dating and paleoclimatic tools in the Canadian Cordillera of Alberta and British Columbia. |
| China-Europe_GNSS Provides information on the Chinese cooperation in European global navigation space systems. |
| GALILEO Features overview of the GALILEO global satellite navigation system by the European Commission. Includes functions, performances and utilization areas. |
| Galileo_Industries Provided overview and news about the GALILEO satellite navigation system being constructed in Europe. |
| Galileo_Joint_Undertaking Offers general system information and industry related material by the consortium building the system. |
| Global_Positioning_System Provides overview of the GPS program and launches. |
| GPS_World Magazine offering on-line news and updated reference information in space and ground GNSS systems. |
| iNavSat News and background information by a consortium set up to operate the Galileo satellite navigation system. |
| NAVSTAR_GPS_Joint_Program_Office United States joint-military-service, multi-national organization responsible for the global positioning constellation, operational control segment, and user equipment. Technical and programmatic info |
| ChemicalElements_com__Manganese Basic information, atomic structure, and isotopes. |
| EnvironmentalChemistry_com__Manganese Atomic structure, chemical and physical properties, and table of nuclides. |
| It\'s_Elemental__Manganese Basic physical and historical information. |
| LANL__Manganese Sources, properties, uses, and handling. |
| Lenntech__Manganese Physical data, chemical properties, health and environmental effects. |
| Manganese Data tables and historic information. |
Atomic Number:
21
Atomic Radius:
160.6 pm
Atomic Symbol:
Sc
Melting Point:
1541 ºC
Atomic Weight:
44.9559
Boiling Point:
2836 ºC
Electron Configuration:
[Ar]4s23d1
Oxidation States:
3
Sources: CRC Handbook of Chemistry
and Physics and the American Chemical Society.
Last Updated: 12/15/2003,©
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