Lichen Determination Keys
Published by the Botanic Garden and Botanical Museum (BGBM), Berlin-Dahlem, this Web site serves as on online guide to lichen identification. Users can choose from articulated identification keys for a large number of taxa, or follow links to keys organized by geographical region. There is also an interactive lichen identification database. The Web site has been recently updated to include a key for the genus Stereocaulon in Tropical America. Users should note that the keys listed are created by
First, the Irish Quaternary Association (IQUA) website publicizes its aim "to promote Quaternary studies in Ireland through its publications, and the organization of field meetings and conferences" (1). Visitors can learn about the importance of quaternary studies as well as find out the latest news and upcoming meetings. At the second website, the University of Wisconsin-Madison describes the current and recent studies dealing with "basic and applied problems in glacial geology, surficial geolo
Educational Software Directory
Educational Software Directory.net is an online directory that provides information on various software programs used in education. The website is hosted by KnowPlay, an online software store, which charges software makers to have their information posted here. The collection of programs and related websites can be searched using keywords or browsed by topic areas, which are: Children's, Games, Language Arts, Math, Multimedia, Music, Reference, Science, Social Studies, Special Needs, Teacher's,
The Mitochondria Project
The Mitochondria Project (MITOP), "a database for mitochondria-related genes, proteins, and diseases," is a joint project of the Munich Information Center for Protein Sequences and the Institut fï¿½r Humangenetik in Germany. MITOP provides a synthesis of all available information "concerning genetic, functional and human-pathological aspects of the central role of mitochondria in the organism, with an emphasis on nuclear encoded proteins," and offers a number of search options organized by or
Temperature World.com gives in-depth and varied information on temperature. The site offers links to a temperature converter, world city temperatures, a printable temperature conversion table, temperature forecasts, temperature related product recalls, and information on metal temperature by color. It also contains explanations of earth temperature issues, temperature sensors and controls, organizations and standards, temperature tools, and more. A unique and thorough site, it can be enjoyed by
An FPGA Implementation of the Linear Cryptanalysis
This advanced research paper addresses an application of field-programmable gate arrays (FPGAs) for a computationally intensive cryptographic task. Specifically, the method of linear cryptanalysis is used to break a Data Encryption Standard key (a former standard used by the US). Prior to this work, the technique was attempted on a network of nearly 20 computers, and the key was broken in about four days. Implementing the same technique with a $3500 FPGA hardware setup, the authors report a tota
Igneous, Metamorphic, and Sedimentary Rock Info
Igneous, Metamorphic, and Sedimentary Rock Info, is part of the University of British Columbia Introduction to Petrology course Web site. Visitors can learn the basics of petrology, and the specifics about each individual rock type. For example, the sedimentary rock page gives definitions, normal constituents, limestone and dolostone facts, and siliciclastic rock information. One of the highlights of the site lets users go through the process of rock classification by determining its grain size,
The Center for Advanced Spatial Technologies
The Center for Advanced Spatial Technologies at the University of Arkansas "brings together the considerable expertise of a network of researchers with a long-standing history of GIS development at the University." Visitors of the site will find links to geo-data delivery systems, interactive mapping programs, reports and publications, and a wide array of other geographical information related to the state. One highlight is the newly released GeoStor version 2.0, which allows users "seamless acc
aspectj.org: Crosscutting Objects for Better Modularity
AspectJ is a Java extension with aspect-oriented functions and programming technology. Continuing with the open source movement, the developers have made AspectJ free for download from this Web site. The software implements "the clean modularization of crosscutting concerns" like performance optimizations, debugging support, and more. The compiler, several accompanying tools, and example programs are all provided in the release. There is also extensive documentation and a tutorial to help new us
NPR: Titanic Baby
This Web site contains an audio file of a story broadcast on National Public Radio earlier this month. The broadcast relates the poignant story of a four-year effort to identify the exhumed body of a 13-month-old child who died in the Titanic disaster. A metal medallion buried with the body serendipitously preserved a bit of the wrist bone, from which forensic scientists could extract mitochondrial DNA and eventually find the child's living relatives.
The first Web site (1) is an article from State University of New York College of Environmental Sciences and Forestry. It provides a short, readable introduction to the biology and natural history of wild turkeys in the US. Wild or domesticated, turkey meat is well know for its soporific power. Visitors to the Web site from International Anti-aging Systems (2) can learn all about tryptophan, the amino acid responsible for the post-Thanksgiving dinner nap. Also found in turkey (but much less appe
Revolutionizing Science and Engineering through Cyber-Infrastructure
An expert panel from National Science Foundation's (NSF) Advisory Panel on Cyber-Infrastructure released their final report in January 2003. The report seeks to "evaluate current major investments in cyberinfrastructure and its use, to recommend new areas of emphasis relevant to cyberinfrastructure, and to propose an implementation plan for pursuing them." Several key points are made that promote scientific and engineering research and education through technology. The NSF panel argues that rece
Virtual Fish Tank
This virtual exhibit from the Boston Museum of Science and Nearlife, Inc. allows you to build your own fish based on characteristics like its fear of predators, preference for deep or shallow habitat, and whether it is attracted to bubbles or shiny objects. You can name your fish, watch it interact with others in your own personal tank, and release it into the museum's virtual tank. A simple registration allows users to access the site fully, which includes viewing what happened to your fish whe
Neuromuscular: Acetylcholine and Acetylcholine Receptors
The Neuromuscular Disease Center at Washington University provides this comprehensive Web site for information on acetylcholine and acetylcholine receptors. Visitors will find detailed Web pages covering acetylcholine metabolism, acetylcholine receptors (including disorders, structure, venom binding, etc.), autonomic function, and myasthenic disorders. Related proteins are organized into data tables, which include links to protein-specific information from external sources such as the National C
GIS for Everyone
The GIS and mapping software company ESRI's Web site (last mentioned in the May 19, 1998 Scout Report for Social Sciences) contains a set of educational pages called GIS for Everyone. Here, visitors can learn the basics of GIS technology and how it's used, download software tools and data for free, and more. One highlight is found on the GIS in Your Everyday Life link, which offers an interesting Flash movie that explains how geography matters to us all.
PC Lube and Tune
The objective of PC Lube and Tune "is to supply usable introductions, tutorials, and education on technical subjects to the large audience of computer users." For example, an article added January 20, 2003, looks at the history and evolution of the graphical user interface. The author demonstrates how computers interpret items such as the mouse, toolbars, and menus. Another article explains the basics of Web standards, such as HTML and XML, and how they are used to encode information. Not all of
Gas molecule motion
This page describes the relationship between kinetic energy of molecules and temperature.
Developed jointly by the Pacific Science Center and the Washington State Dairy Council, Nutrition Cafe offers students three interactive games to explore the world of nutrition. The first game, Nutrient Sleuth, is an entertaining hangman-style game where students try to discover what nutrients different characters are missing based on clues and letter guesses. Another enjoyable offering is Grab A Grape, a Jeopardy-style game where site visitors try to match nutrition-related questions with answe
This introduction to light microscope usage provides step by step instructions that facilitate discovery of how microscope affects an image. A java based interactive simulation is also included.
This activity allows the user to enter numbers and then attempt to find the rule the activity is using to get the data in the output box.