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Last update: August 15, 2014.
1

Online Nevada Encyclopedia  

NSDL National Science Digital Library

Nevada is much more than the Hoover Dam and a certain large neon-drenched city, and the Online Nevada Encyclopedia revels in covering aspects of the state that include business, mining, politics, exploration, and the economy of the Silver State. Started in 2007, the Encyclopedia has been developed by the Nevada Humanities organization, with generous support of the U.S. Department of Education and the State of Nevada. It's a good idea to start a tour through the site by looking at one of the exhibit galleries, which include "Civil Rights in Nevada" and "Hoover Dam". All four of the current exhibits bring together primary documents with brief descriptions of each document. After that, visitors should head over to the topical areas to read high-quality articles about various facets of the state. All of the articles are authored by subject experts, and they cover everything from the archaeology of Tule Springs to the spooky world of the state's many ghost towns.

2

Ohio History Central Online Encyclopedia  

NSDL National Science Digital Library

From William Howard Taft to Toledo, the Ohio History Central Online Encyclopedia is a veritable cornucopia of material about the places, events, and other elements of the Buckeye state's history and lore. As noted on the site's homepage, this encyclopedia ïÿý"is an evolving, dynamic online encyclopedia that includes information about Ohio's natural history, prehistory and history.ïÿý That is certainly a tall order to fill, and the site does so admirably. Visitors can click on over to the built-in search engine on the homepage, or just browse along through such broad categories as "History", "Natural History", and "State Symbols". Visitors to this last category may be intrigued to learn that the state's beverage is tomato juice, or that the state's official insect is the ladybug, a peaceful creature best known for its voracious appetite for aphids.

2006-01-01

3

UCLA Plans Online Encyclopedia of Egyptology  

ERIC Educational Resources Information Center

The University of California at Los Angeles (UCLA) has unveiled plans for what appears to be the world's first online, peer-reviewed encyclopedia devoted to ancient Egypt. The "UCLA Encyclopedia of Egypt," which in April won a $325,000 grant from the National Endowment for the Humanities, will include material in Arabic as well as English. The…

Howard, Jennifer

2006-01-01

4

Summarization of an Online Medical Encyclopedia  

Microsoft Academic Search

We explore a knowledge-rich (abstraction) approach to summa- rization and apply it to multiple documents from an online med- ical encyclopedia. A semantic processor functions as the source interpreter and produces a list of predications. A transformation stage then generalizes and condenses this list, ultimately gener- ating a conceptual condensate for a given disorder topic. We provide a preliminary evaluation

Marcelo Fiszman; Thomas C. Rindflesch; Halil Kilicoglu

2004-01-01

5

CAMEO: Conservation & Art Material Encyclopedia Online  

NSDL National Science Digital Library

Art historians, preservationists, and other types will be most glad to learn about the existence of the Conservation and Art Materials Encyclopedia Online (CAMEO). This is, of course, if they don't know about it already. The original CAMEO was first placed online in November 2000, and it has been significantly enlarged and updated over the past several years. This online resource contains chemical, physical, visual, and analytical information on over 10,000 historic and contemporary materials used in the production and conservation of artistic, architectural, archaeological, and anthropological materials. While some visitors may wish to use the embedded search engine, some may just wish to browse the materials by letter. Visitors can also perform a material search by entering a word, partial word, or a variety of other fields, including composition, density, and boiling point.

6

Becoming Wikipedian: transformation of participation in a collaborative online encyclopedia  

Microsoft Academic Search

Traditional activities change in surprising ways when computer-mediated communication becomes a component of the activity system. In this descriptive study, we leverage two perspectives on social activity to understand the experiences of individuals who became active collaborators in Wikipedia, a prolific, cooperatively-authored online encyclopedia. Legitimate peripheral participation provides a lens for understanding participation in a community as an adaptable process

Susan L. Bryant; Andrea Forte; Amy Bruckman

2005-01-01

7

Self-Supervised Chinese Ontology Learning from Online Encyclopedias  

PubMed Central

Constructing ontology manually is a time-consuming, error-prone, and tedious task. We present SSCO, a self-supervised learning based chinese ontology, which contains about 255 thousand concepts, 5 million entities, and 40 million facts. We explore the three largest online Chinese encyclopedias for ontology learning and describe how to transfer the structured knowledge in encyclopedias, including article titles, category labels, redirection pages, taxonomy systems, and InfoBox modules, into ontological form. In order to avoid the errors in encyclopedias and enrich the learnt ontology, we also apply some machine learning based methods. First, we proof that the self-supervised machine learning method is practicable in Chinese relation extraction (at least for synonymy and hyponymy) statistically and experimentally and train some self-supervised models (SVMs and CRFs) for synonymy extraction, concept-subconcept relation extraction, and concept-instance relation extraction; the advantages of our methods are that all training examples are automatically generated from the structural information of encyclopedias and a few general heuristic rules. Finally, we evaluate SSCO in two aspects, scale and precision; manual evaluation results show that the ontology has excellent precision, and high coverage is concluded by comparing SSCO with other famous ontologies and knowledge bases; the experiment results also indicate that the self-supervised models obviously enrich SSCO.

Shao, Zhiqing; Ruan, Tong

2014-01-01

8

Encyclopedia of 1848 Revolutions  

NSDL National Science Digital Library

Compiled by Ohio University Professor Emeritus of History James Chastain, this online encyclopedia contains a large number of articles written by scholars from around the world on topics related to the "Springtime of the Peoples," the popular revolutions that spread across Europe in 1848. Users can browse the encyclopedia by alphabetical entry or by contributor, although the latter is not currently available. Typical entries contain one lengthy or several smaller paragraphs and a bibliography. The site also includes an introduction by Chastain which discusses the study of 1848 and the Encyclopedia's contents. Both scholars and students studying nineteenth-century Europe will find this site a handy reference resource.

Chastain, James.

9

The Canadian Encyclopedia  

NSDL National Science Digital Library

In December 2000, Historica, a Canadian foundation dedicated to the preservation of Canadian cultural heritage, posted the first online edition of The Canadian Encyclopedia, a massive one-volume reference to Canada authored by over 4,000 Canadians. This searchable edition features more than 10,000 articles written by a broad base of Canadians who are experts in their individual subjects. (An aggressive act of intellectual egalitarianism, the work employs far more authors than the much larger, but more editorially driven, Encyclopedia Britannica.) In addition to entries written in hypertext format with bibliographies, the encyclopedia offers interactive elements, such as statistical graphs, multimedia presentations of key historical events, quizzes and games, student guides, monthly topical features, and more. The encyclopedia is accessible in French and English and has a separate student's edition as well. Note: we did find some brief instances of printer code in the entries; it would appear that another edit of the online version would be beneficial.

2000-01-01

10

From now on, the Encyclopedia Britannica will only be published online  

NSDL National Science Digital Library

Encyclopedia Britannica ends print, goes digitalhttp://www.chicagotribune.com/health/sns-rt-us-encyclopediabritannicabre82c1fs-20120313,0,338011.storyAfter 244 Years, Encyclopaedia Britannica Stops the Presseshttp://mediadecoder.blogs.nytimes.com/2012/03/13/after-244-years-encyclopaedia-britannica-stops-the-presses/Encyclopedia Britannica to stop printing bookshttp://money.cnn.com/2012/03/13/technology/encyclopedia-britannica-books/?cnn=yes&hpt=hp_t3Encyclopaedia Britannica, 11th editionhttp://www.archive.org/details/EncyclopaediaBritannica1911HQDJVUDeath of a Sales Forcehttp://www1.salon.com/media/media960510.htmlBritannica.comhttp://www.britannica.com/The first proto-encyclopedia was created by Pliny the Elder two thousand years ago. Over the course of many years, he created a work that covered art, medicine, geography, geology, and natural history. Since that time, many encyclopedias have come and gone, and one of the most enduring is certainly the Encyclopedia Britannica. First published in 1768, the work began life in Edinburgh and it was considered one of the distinguishing products of the Scottish Enlightenment. This Tuesday it was announced that the Encyclopedia would no longer publish a print edition, but the company will continue to update and offer its digital online version. In a statement released this week to major news outlets, the company's president, Jorge Cauz, commented that "The print edition became more difficult to maintain and wasn't the best physical element to deliver the quality of our database and the quality of our editorial." Of course, the broader story of this transformation involves the rise of various free online encyclopedias, such as Wikipedia. Interested parties may still purchase one of the existing 15th edition printed copies of the Encyclopedia for $1,400.The first link will take visitors to a news article about the Encyclopedia Britannica's decision to go to an all-digital format from this Wednesday's Chicago Tribune. The second link will lead interested parties to a bit of commentary on this development from the New York Times' "Media Decoder" blog. Moving on, the third link will take users to a piece from CNN's Julianne Pepitone about the recent decision made by Encyclopedia Britannica to stop printing physical copies. The fourth link leads to a digitized copy of the celebrated (and rather controversial) 11th edition of the Encyclopedia Britannica, published in 1911. The fifth takes visitors to a great archived piece from Salon.com that features an interview with Myron Taxman, one of the last Encyclopedia Britannica salespeople. The final link leads to the homepage of the Encyclopedia Britannica, which offers free access to select articles and information about the company.

Grinnell, Max

2012-03-16

11

Encyclopedia of Oklahoma History & Culture  

NSDL National Science Digital Library

The 46th state, Oklahoma, presents its unusual history with the online version of The Encyclopedia of Oklahoma History and Culture. The Encyclopedia was prepared by over 500 "university-based scholars and independent historians and scholars," and was a joint effort by The Oklahoma Historical Society and Oklahoma State University Library Electronic Publishing Center. Visitors can click on the "Table of Contents" link near the bottom of the homepage to "Browse Entries Alphabetically", "Browse Entries Chronologically", or "Browse Entries by Subject". Browsing via chronology introduces visitors to Oklahoma starting with the "Precontact Era", through the "Westward Expansion" and on to "Twentieth Century to Present". Subject categories include "African Americans", "Farming", "Military", and "Petroleum". When searching, visitors will be taken to the Electronic Publishing Center Search Page, so they will need to choose the specific collection, Encyclopedia of Oklahoma History and Culture, from the drop down box, to confine the search to the Encyclopedia.

12

Chemical information media in the chemistry lecture hall: a comparative assessment of two online encyclopedias.  

PubMed

The chemistry encyclopedia Römpp Online and the German universal encyclopedia Wikipedia were assessed by first-year university students on the basis of a set of 30 articles about chemical thermodynamics. Criteria with regard to both content and form were applied in the comparison; 619 ratings (48% participation rate) were returned. While both encyclopedias obtained very good marks and performed nearly equally with regard to their accuracy, the average overall mark for Wikipedia was better than for Römpp Online, which obtained lower marks with regard to completeness and length. Analysis of the results and participants' comments shows that students attach importance to completeness, length and comprehensibility rather than accuracy, and also attribute less value to the availability of sources which validate an encyclopedia article. Both encyclopedias can be promoted as a starting reference to access a topic in chemistry. However, it is recommended that instructors should insist that students do not rely solely on encyclopedia texts, but use and cite primary literature in their reports. PMID:21138076

Korosec, Lukas; Limacher, Peter Andreas; Lüthi, Hans Peter; Brändle, Martin Paul

2010-01-01

13

Interpreting Hypernymic Propositions in an Online Medical Encyclopedia  

Microsoft Academic Search

Interpretation of semantic propositions from bio- medical texts documents would provide valuable support to natural language processing (NLP) ap- plications. We are developing a methodology to in- terpret a kind of semantic proposition, the hy- pernymic proposition, in MEDLINE abstracts. In this paper, we expanded the system to identify these structures in a different discourse domain: the Medi- cal Encyclopedia

Marcelo Fiszman; Thomas C. Rindflesch; Halil Kilicoglu

2003-01-01

14

Bartleby.com Columbia Encyclopedia: Sixth Edition  

NSDL National Science Digital Library

Bartleby.com has available its electronic version of the Columbia Encyclopedia with numerous updates, including improved search and navigation features. The sixth edition contains close to 51,000 entries, including 17,000 biographies, with over 80,000 hypertext cross-references, as well as links to other resources such as maps, speeches, and additional full-text collections held by Bartleby.com. Visitors may search the encyclopedia by keyword (either full-text or entry word), browse the entries alphabetically, or browse the biographical entries by 140 categories. Definitely one of the standard online general reference works.

2001-01-01

15

MURAX: a robust linguistic approach for question answering using an on-line encyclopedia  

Microsoft Academic Search

Robust linguistic methods are applied to the task of answering closed-class questions using a corpus of natural language. The methods are illustrated in a broad domain: answering general-knowledge questions using an on-line encyclopedia.A closed-class question is a question stated in natural language, which assumes some definite answer typified by a noun phrase rather than a procedural answer. The methods hypothesize

Julian Kupiec

1993-01-01

16

Stanford Encyclopedia of Philosophy  

NSDL National Science Digital Library

Edited by Edward N. Zalta, Consulting Associate Professor of Philosophy at Stanford, this site claims to be the first dynamic encyclopedia. Unlike standard reference works or CD-ROMS, each entry in the Stanford Encyclopedia is maintained and kept up to date by experts in the field. As a result, the entries and the Encyclopedia as a whole are responsive to new developments in the field. The Encyclopedia is still very much under development, with many topics awaiting an entry. However, regular users may track new additions via the What's New section. Additional resources include an internal search engine and an archive of the previous three editions of the Encyclopedia.

1999-01-01

17

Electrochemistry Encyclopedia  

NSDL National Science Digital Library

This online encyclopedia features articles describing many aspects of electrochemistry, the branch of chemistry dealing with reactions involving electrical currents and potentials. The articles are written by leading experts in the field, but in a popular-science style accessible to the non-expert. New articles are added at irregular intervals, and all articles are periodically updated as new developments occur. The collection is browseable by a table of contents, by author, or by subject. It may also be searched by keyword or a string of terms. The Encyclopedia links to the Electrochemistry Dictionary (http://electrochem.cwru.edu/ed/dict.htm) and to other online resources.

Edited by Zoltan Nagy, University of North Carolina, Chapel Hill

18

Electrochemistry Dictionary and Encyclopedia  

NSDL National Science Digital Library

This dictionary, accompanied by the online Electrochemistry Encyclopedia (http://electrochem.cwru.edu/ed/encycl), provides brief definitions of words and phrases used often in electrochemistry, the branch of chemistry dealing with reactions involving electrical current or potential. For some terms, a second paragraph provides additional, more technically oriented information. Entries are organized in alphabetical order. The online encyclopedia features articles describing many aspects of electrochemistry, the branch of chemistry dealing with reactions involving electrical currents and potentials. The articles are written by leading experts in the field, but in a popular-science style accessible to the non-expert. New articles are added at irregular intervals, and all articles are periodically updated as new developments occur. The collection is browseable by a table of contents, by author, or by subject. It may also be searched by keyword or a string of terms. The Encyclopedia links to the Electrochemistry Dictionary (http://electrochem.cwru.edu/ed/dict.htm) and to other online resources.

Edited by Zoltan Nagy, University of North Carolina, Chapel Hill

19

Encyclopedia of Chicago History  

NSDL National Science Digital Library

Somewhere between Los Angeles and New York is a metropolis affectionately referred to by some as the "Second City". Also known as Chicago, this fair city has recently received its due with the publication of this outstanding reference volume. The online version offered on this site is even more authoritative than the print volume, as it contains a number of interactive maps and special features. Produced by the Chicago Historical Society, the Newberry Library and Northwestern University, this online edition allows users to search the entire contents of the Encyclopedia, and even browse digitized versions of the primary historical documents that serve as the research materials for the print articles. From the homepage, visitors can peruse a user's guide to the Encyclopedia. Each entry includes hypertext links, and in some cases, illustrative materials. For additional information, each entry also features some additional readings. Visitors will also want to take a look at the lovely maps produced for the volume, including a rather compelling map of Chicago's blues clubs. Finally, the special features area includes several interpretive digital essays on the Plan of Chicago of 1909 and galleries on such important topics as "How Chicagoans Remember Their History".

20

The Encyclopedia of Cleveland History  

NSDL National Science Digital Library

Sponsored jointly by Case Western Reserve University and the Western Reserve Historical Society, this excellent online text offers hundreds of articles on the history of Cleveland. There are two categories of articles in the Encyclopedia, general entries -- short articles of 200 to 500 words -- and interpretive essays -- "longer articles of 500 to 4000 words that explore major topics in local history." Both feature numerous hypertext links to related entries as well as photographic images that can be expanded to full screen. (These images may also be examined in a separate gallery on-site.) The encyclopedia features an alphabetical as well as a subject index and can be searched by title, text, and subject. A Reader's Guide and a bicentennial timeline of Cleveland history are also offered as supplementary text. New articles are added on a regular basis.

1998-01-01

21

Encyclopedia of Planetary Sciences  

Microsoft Academic Search

Containing more than 450 entries by some 200 eminent contributors from all over the world, the Encyclopedia of Planetary Sciences is the first book to present this information in an authoritative yet approachable way. This encyclopedia deals with the atmospheres, surfaces and interiors of the planets and moons, and with the interplanetary environment of plasma fields, as well as with

J. H. Shirley; R. W. Fairbridge

1997-01-01

22

Encyclopedia Mythica  

NSDL National Science Digital Library

Encompassing mythology, folklore, and legend, the Encyclopedia Mythica--a collaborative reference resource with over 150 contributors--contains more than 4400 definitions of mythical and legendary figures and almost 200 images. Users may search the entire work by keyword or browse by topic areas. The browseable index is available in both a frames and non-frames version. The unique Miscellanea section compliments the numerous entries on gods, creatures, and heroes with pronunciation guides, maps, genealogy tables, brief histories of ancient peoples, lists of deities and ancient feast days, and the linguistic origins for the names of days, months, and celestial bodies. Contributions to the encyclopedia are encouraged. All submissions are reviewed by editor Micha F. Lindemans.

23

Wikipedia: The Free Encyclopedia  

NSDL National Science Digital Library

Wikipedia is a free online, editable encyclopedia that "all Internet users can collaborate on by writing and submitting new articles or improving existing ones." The project, which claims to be "living proof that content and knowledge can also organize themselves," uses a wiki, i.e. software to allow users to revise content. The website encourages community participation by listing Open Tasks, such as copy-editing, merging, and peer reviewing needing to be done for particular entries. The texts and media presented on Wikipedia are available to the public "to process the content further and disseminate it." There are also wikipedias in 50 other languages, including one in Esperanto, the invented international language. Users must create an account to contribute to Wikipedia, but anyone can browse the entries by topic area or search on a specific term. Within each entry are links to related items and some of the more extended entries include a table of contents for ease of navigation. Other sections of the website let you view the most recent changes (within the past seven days) or browse entries related to current events.

24

Jewish Encyclopedia.com  

NSDL National Science Digital Library

Standing as a testament to the wide ranging contributions of the Jewish people to world culture and history, this Web site contains the complete contents of the massive 12-volume Jewish Encyclopedia, originally published between 1901-1906 by the Funk & Wagnall's Company. Conceived and funded by the Kopelman Foundation, this compilation is the only free encyclopedia of Judaica available on the Internet. While the encyclopedia obviously does not include such topics as the creation of the state of Israel or the Holocaust, it is a rather fascinating collection that recalls an interesting period in scholarship, and is a helpful historical document. Visitors can browse by the encyclopedia by letter, along with viewing a transcription of each entry and any accompanying images included with each entry. Those who might be interested in helping compile an updated version of the encyclopedia are also invited to join the mailing list.

25

Purchasing an Encyclopedia: 12 Points To Consider. Fifth Edition.  

ERIC Educational Resources Information Center

This book discusses issues to consider when purchasing an encyclopedia and provides reviews of eight print encyclopedias, six CD-ROM encyclopedias, and one online encyclopedia. Each review provides an address and discusses the history, scope and treatment, and quality and currency of the encyclopedia; for CD-ROM encyclopedias, the database…

American Library Association, Chicago, IL.

26

Ullmann's Encyclopedia of Industrial Chemistry.  

ERIC Educational Resources Information Center

This review compares "Ullmann's Encyclopedia of Industrial Chemistry" with the "Kirk-Othmer Encyclopedia of Chemical Technology," two prominent encyclopedias of chemical technology and industry. Cost, quantity of information, organization, illustrations, authorship, abbreviations, online availability, and content of articles are discussed. (MES)

Chadwick, Sharon S.

1988-01-01

27

Encyclopedias Today.  

ERIC Educational Resources Information Center

Provides brief company profiles and describes sales methods and electronic publishing ventures for six encyclopedia publishers: Encyclopedia Britannica, Inc.; World Book; Grolier; the P.F. Collier encyclopedia division of Macmillan Publishing; Funk & Wagnalls; and Standard Educational Corp. (MES)

Whiteley, Sandy

1992-01-01

28

Burns Encyclopedia  

NSDL National Science Digital Library

Provide by Burns Country, this full-text, online version of "the definitive Robert Burns reference volume" serves as a useful handbook to Scotland's most famous poet and the intellectual circles in which he turned. The encyclopedia, which is in HTML format, is organized alphabetically. Burns Country offers a number of other related resources, chief among them a songs and poems archive containing 100 of the poet's works. Other features at the site include a discussion area, Burns and Scottish association links, and some commercial content.

Lindsay, Maurice.

29

Encyclopedia of Birth Control.  

ERIC Educational Resources Information Center

This encyclopedia brings together in more than 200 entries, arranged in A-to-Z format, a portrait of the complex modern issue that birth control has become with advances in medicine and biochemistry during the 20th century. It is aimed at both the student and the consumer of birth control. Entries cover the following topics: birth control…

Rengel, Marian

30

Encyclopedia Astronautica  

NSDL National Science Digital Library

Sponsored by Friends and Partners in Space and edited by Mark Wade, this site is a bit hard on the eyes, but it has few peers in terms of the sheer mountains of material it offers on spaceflight by all nations of the world. There is so much here that it is hard to decide where to begin. The main page offers a long list of highlights and new additions, most of them generously illustrated. The site may be browsed alphabetically, browsed by topic, or searched by keyword. In addition to the myriad encyclopedia entries, there are hundreds if not thousands of images, a lengthy collection of articles, a long list of references, statistics, and a spaceflight chronology. Again, the site would benefit from a reorganization and redesign, but anyone with a professional or personal interest in spaceflight will undoubtedly enjoy a visit.

31

The Electronic Encyclopedia of Earthquakes  

NASA Astrophysics Data System (ADS)

The Electronic Encyclopedia of Earthquakes is a collaborative project of the Southern California Earthquake Center (SCEC), the Consortia of Universities for Research in Earthquake Engineering (CUREE) and the Incorporated Research Institutions for Seismology (IRIS). This digital library organizes earthquake information online as a partner with the NSF-funded National Science, Technology, Engineering and Mathematics (STEM) Digital Library (NSDL) and the Digital Library for Earth System Education (DLESE). When complete, information and resources for over 500 Earth science and engineering topics will be included, with connections to curricular materials useful for teaching Earth Science, engineering, physics and mathematics. Although conceived primarily as an educational resource, the Encyclopedia is also a valuable portal to anyone seeking up-to-date earthquake information and authoritative technical sources. "E3" is a unique collaboration among earthquake scientists and engineers to articulate and document a common knowledge base with a shared terminology and conceptual framework. It is a platform for cross-training scientists and engineers in these complementary fields and will provide a basis for sustained communication and resource-building between major education and outreach activities. For example, the E3 collaborating organizations have leadership roles in the two largest earthquake engineering and earth science projects ever sponsored by NSF: the George E. Brown Network for Earthquake Engineering Simulation (CUREE) and the EarthScope Project (IRIS and SCEC). The E3 vocabulary and definitions are also being connected to a formal ontology under development by the SCEC/ITR project for knowledge management within the SCEC Collaboratory. The E3 development system is now fully operational, 165 entries are in the pipeline, and the development teams are capable of producing 20 new, fully reviewed encyclopedia entries each month. Over the next two years teams will complete 450 entries, which will populate the E3 collection to a level that fully spans earthquake science and engineering. Scientists, engineers, and educators who have suggestions for content to be included in the Encyclopedia can visit www.earthquake.info now to complete the "Suggest a Web Page" form.

Benthien, M.; Marquis, J.; Jordan, T.

2003-12-01

32

Encyclopedia of Planetary Sciences  

NASA Astrophysics Data System (ADS)

Containing more than 450 entries by some 200 eminent contributors from all over the world, the Encyclopedia of Planetary Sciences is the first book to present this information in an authoritative yet approachable way. This encyclopedia deals with the atmospheres, surfaces and interiors of the planets and moons, and with the interplanetary environment of plasma fields, as well as with asteroids and meteorites. Processes such as accretion, differentiation, thermal evolution and impact cratering form another category of entries. Remote sensing techniques employed in investigation and exploration, such as magnetometry, photometry, and spectroscopy are described in separate articles. In addition the Encyclopedia chronicles the history of planetary science, including biographies of pioneering scientists, and detailed descriptions of all major lunar and planetary missions and programs. The Encyclopedia of Planetary Sciences is superbly illustrated throughout with over 450 line drawings, 180 black and white photographs, and 63 colour illustrations. It will be a key reference source for planetary scientists, astronomers, and workers in related disciplines such as geophysics, geology and the atmospheric sciences. Included in this book is a PC and Mac compatible CD-ROM containing over 200 relevant planetary and related images available from NASA. This CD-ROM has been specially compiled for the Encyclopedia by The United States National Space Science Data Center.

Shirley, J. H.; Fairbridge, R. W.

1997-09-01

33

Gay, Lesbian, Bisexual, Transgender and Queer Encyclopedia  

NSDL National Science Digital Library

Edited by Claude Summers and Ted-Larry Pebworth, this online encyclopedia is an excellent resource for information about many aspects of gay, lesbian, bisexual, and transgender culture. From the main page, users can search the encyclopedia by keyword, or move through one of the thematic sections offered here, such as literature or the arts. Each of these sections contains an alphabetical subject guide and a popular topics section. Also featured is a Spotlight section that, in March 2003, features an extended essay on lesbian photography before Stonewall. The site also has a lively, monitored discussion area, featuring commentaries on literature, a suggestion area, and feedback on technical issues related to the site. Finally, the site has a list of all contributors to the project, with links to each of their entries.

34

Tennessee Encyclopedia of History and Culture  

NSDL National Science Digital Library

When thinking about the Volunteer State, many people's minds may immediately turn to the accomplishments of President Andrew Jackson or the far-reaching impact of the massive public works project that resulted in the formation of the Tennessee Valley Authority. Interested parties can learn about these aspects of the state's history and culture, along with many other facets of the state, at this fine site which is the digital version of The Tennessee Encyclopedia of History and Culture. Originally released in 1998 as a large print volume, the Encyclopedia was placed online in a searchable format in 2002. Here visitors can browse through more than 1500 entries, along with 500 additional images and some audio and video files as well. For those interested in looking at the material by themes, they will be pleased to learn that the materials are also divided into categories, such as medicine, sports, county history, and industry.

35

Online Adaptive Vector Quantization with Variable Size Codebook Entries.  

ERIC Educational Resources Information Center

Presents a new image compression algorithm that employs some of the most successful approaches to adaptive lossless compression to perform adaptive online (single pass) vector quantization with variable size codebook entries. Results of tests of the algorithm's effectiveness on standard test images are given. (12 references) (KRN)

Constantinescu, Cornel; Storer, James A.

1994-01-01

36

Encyclopedia of Smart Materials, 2 Volume Set  

NASA Astrophysics Data System (ADS)

Smart materials--materials and structures that can impart information about their environment to an observer or monitoring device--are revolutionizing fields as diverse as engineering, optics, and medical technology. Advances in smart materials are impacting disciplines across the scientific and technological landscape. Now, practictioners and researchers have an authoritative source to go to for answers about this emerging new area. Encyclopedia of Smart Materials provides A-to-Z coverage of the entire field of intelligent materials. Discussions of theory, fabrication, processing, applications, and uses of these unique materials are presented here in a collection of concise entries from the world's foremost experts in the field--including scientists, educators and engineers. This encyclopedia is as broad in scope as the technology itself, addressing daily, commercial applications as well as sophisticated units designed to operate in space, underwater, underground, and within the human body. Extensively cross-referenced and generously supplemented with bibliographies and indexes, this book's treatment also broaches the specialized properties and coatings that are required for the use of materials in extreme conditions. Illustrated with photographs, tables, line drawings, and equations, Encyclopedia of Smart Materials is the premier reference for material scientists, chemists, chemical engineers, process engineers, consultants, patent attorneys and students in these areas. An essential resource on the shelves of laboratories, government facilities, and academic libraries. Editor-in-Chief, Mel Schwartz has over forty years of experience with metals, ceramics, and composites, with special expertise in brazing. The holder of five patents, he has authored thirteen books and more than one hundred technical papers and articles. Reach the information you need rapidly and easily with the ONLINE edition of the Encyclopedia of Smart Materials. The online edition delivers all the rich content of the print edition with the added benefits of an advanced search engine and the desktop convenience of web access. For more information or to license the online edition (beginning July 2002) please visit: www.interscience.wiley.com/reference/esm

Schwartz, Mel

2002-03-01

37

The Astronomy Encyclopedia  

Microsoft Academic Search

With more than 3,000 alphabetically arranged entries and 500 stunning color and black-and-white photographs, star maps, and diagrams, The Astronomy Encyclopedia covers everything that the general enthusiast--and the more serious researcher--would want to know about planets, stars, galaxies, and our universe. Here is concise, reliable information on the whole field of astronomy, ranging from adaptive optics and cold dark matter,

Patrick Moore

2002-01-01

38

Encyclopedia of the NOAA National Marine Sanctuaries  

NSDL National Science Digital Library

Highlighting the diverse marine life of America's ocean and Great Lakes treasures, the Encyclopedia of the Sanctuaries offers photos, streaming video and important facts for more than 100 key animal and plant species from each of the National Marine Sanctuaries. The encyclopedia entry for each species includes a photo, quick facts, information about its diet, habitat, distribution and status, and links to outside resources.

39

New Media Encyclopedia  

NSDL National Science Digital Library

This online reference work is a scholarly research tool for the study of new media and related artistic practices. The New Media Encyclopedia, now in the first of two phases, consists of four primary sections: Glossary, Chronological Landmarks, General Bibliography, and Artists & Works. The Artists & Works section is the core of the site, containing brief biographies of new media artists and critical descriptions of their works, which users may view with a RealPlayer or QuickTime plug-in. The section currently covers 43 artists and 233 of their works. By the end of the project's second phase, scheduled for late 1999, it will include over 100 artists and 500 works garnered from the collections of the project's three collaborators: the Centre Georges Pompidou, the Museum Ludwig, and the Centre pour l'Image Contemporaine. Users should note that since the project is still in its initial phase, some portions of the encyclopedia may be under development.

40

Environmental planning: A condensed encyclopedia  

Microsoft Academic Search

This encyclopedia contains over 1000 entries dealing with the numerous facets of environmental planning. Within the last few years the term, ''environmental planning'' has emerged. It embraces planning in the older sense with its strong, through by no means exclusive, emphasis on physical planning; but it also implies a form of planning which places much greater emphasis on environmental pleasantness

Gilpin

1986-01-01

41

Encyclopedia of Smoking and Tobacco.  

ERIC Educational Resources Information Center

This encyclopedia presents an extensive listing of current and historical information relating to tobacco. It aims to provide accurate, current, and balanced information to people of all viewpoints and on both sides of the smoking debate. The A-to-Z format makes a vast amount of current information easily accessible. Over 600 entries are complied…

Hirschfelder, Arlene B.

42

The Astronomy Encyclopedia  

NASA Astrophysics Data System (ADS)

With more than 3,000 alphabetically arranged entries and 500 stunning color and black-and-white photographs, star maps, and diagrams, The Astronomy Encyclopedia covers everything that the general enthusiast--and the more serious researcher--would want to know about planets, stars, galaxies, and our universe. Here is concise, reliable information on the whole field of astronomy, ranging from adaptive optics and cold dark matter, to Islamic astronomy and the lens defect known as vignetting. It includes a host of major articles on the cornerstones of astronomical investigation, such as the Milky Way, the sun and the planets, optical and radio telescopes, stars, black holes, astrophysics, observatories, astronomical photography, space programs, the constellations, and famous astronomers. And there are concise entries on planetary features and satellites, asteroids, observational techniques, comets, satellite launchers, meteors, and subjects as diverse as life in the Universe and the structure of meteorites. Scores of tables list the brightest stars in the major constellations, annual meteor showers, major variable stars, dwarf stars, energy production processes in the Sun, and other relevant data. More than 100 astronomers from leading universities and observatories around the world, each an expert in their own particular field, wrote and reviewed the entries to ensure their authority. Readers can thus be assured that the Encyclopedia provides the most up-to-date and reliable information available. Under the general editorship of Patrick Moore, one of the world's best-known and most trusted voices on astronomy, The Astronomy Encyclopedia is an authoritative and strikingly attractive roadmap for exploring the last great frontier of the world in which we live.

Moore, Patrick

2002-11-01

43

Pre-Entry Variables Related to Retention in Online Distance Education  

ERIC Educational Resources Information Center

This study identified pre-entry variables related to course completion and noncompletion in university online distance education courses. Four hundred and sixty-four students who were enrolled in online distance education courses participated in the study. Discriminant analysis revealed six pre-entry variables were related to retention, including…

Dupin-Bryant, Pamela A.

2004-01-01

44

PRIME Mathematics Encyclopedia  

NSDL National Science Digital Library

The Platonic Realms Interactive Mathematics Encyclopedia (PRIME) is an impressive collection of mathematical terms and concepts. To use PRIME, simply type the first six letters of the phrase in question into the search field. Results are displayed alphabetically, starting with the closest match first. To limit the results, users can search in specific categories. These include algebra, calculus, discrete mathematics, geometry, graph theory, and many more. There are even biographies of a few notable mathematicians. Many of the entries are cross listed with other related terms. PRIME is very well presented and easy to use.

2006-01-19

45

TechWeb Encyclopedia  

NSDL National Science Digital Library

TechWeb Network is an online resource for IT professionals providing "contextual access to the resources of CMP's network of industry-leading technology publications." The site offers this handy encyclopedia of technology terms where visitors can search a database of over 20,000 IT terms. Results are given as short definitions with links to related terms, along with links to definitions of other terms that are similar to the original term requested. For fun, visitors will also find a featured "random definition" and can browse the top 10 requested definitions.

46

E-Conflict World Encyclopedia  

NSDL National Science Digital Library

Maintained by EmulateMe, a Web-design company, this online Encyclopedia provides maps, history, weather, geography, and governmental and economic information for any country that users wish to select. (For younger users, the reference also offers audio versions of the national anthems and images of the flags for each country.) There is a wealth of information on-site, particularly in terms of economic, geographic, and demographic data, but users should observe their URL window as some links are external. Rounding out the encyclopedia is a moderated discussion forum allowing users to "speak out" about current world affairs.

47

Environmental Contaminants Encyclopedia Perylene Entry.  

National Technical Information Service (NTIS)

This document was put together by human beings, mostly by compiling or summarizing what other human beings have written. Therefore, it most likely contains some mistakes and/or potential misinterpretations and should be used primarily as a way to search q...

R. J. Irwin M. Van Mouwerik L. Stevens M. D. Seese W. Basham

1997-01-01

48

Encyclopedia Mythica  

NSDL National Science Digital Library

While the 2004 Athens Olympic Summer Games are now just a not-so-distant memory, the world's fascination with Greek mythology and the ancient world continues to reverberate with the public, scholars of antiquity, and other interested parties. To pique their interest, there is the lovely Encyclopedia Mythica which was founded and edited by Micha Lindemans. Here visitors can peruse areas devoted to mythology, folklore, bestiary, heroes, and take a look at some genealogy tables, which tend to be quite helpful. The featured items section is quite nice, as visitors can read the full text of a book on witchcraft, learn about the great Jewish philosopher Moses Maimonides, and read the 1898 edition of the Arabian Nights. The site has a number of other features, including a place for visitor feedback and a search feature. Rounding out the site are lists of feast days from the ancient world, along with a list of Roman deities and their Greek counterparts.

49

The Encyclopedia of Mineralogy  

NASA Astrophysics Data System (ADS)

This volume is the tenth in the ambitious Encyclopedia of Earth Science series. In addition to the standard short encyclopedia-style articles, it contains an alphabetical list of 3000 mineral species, groups, varieties, and mineraloids (which, following Fleischer, is called a glossary); this glossary presents basic physical and chemical properties for each entry.Editor Keith Frye has made a major effort, detailed in the preface, to assist the reader/user in avoiding many of the pitfalls in mineral nomenclature. For example, the book presents the names of valid mineral species in lower-case italic type, the names of series or groups in boldface italic letters, while varieties (and synonyms) are set in roman typeface. The worthwhile preface also contains a list, with addresses and date of first publication, of the world's 178 most important journals where mineral data are published. Also included are lists of the important mineral reference books and textbooks on mineralogy. The articles include one on museums with a 32-page table of museums with addresses, size of collection, and specialties.

Rapp, George, Jr.

50

Encyclopedia of Alabama  

NSDL National Science Digital Library

Sponsored by the Alabama Humanities Foundation and Auburn University, the Encyclopedia of Alabama (EOA) is a veritable cornucopia of material about the Yellowhammer State. The EOA draws on the work of many trustworthy and learned authors, and as a statement of the homepage notes, "Alabama's problems are not glossed over, nor are its accomplishments and successes overlooked." Visitors who might not be familiar with the state in the least are encouraged to read historian Wayne Flynt's fine essay on Alabama featured on the homepage. After that, visitors can look over the entries alphabetically, or they can use of the thematic headings (such as "Peoples" and "Religion") to start their journey. The "Features" articles are a treat as well, and they include "Alabama and the Civil War" and "College Football in Alabama". The site also includes several photo galleries, a glossary, and some educational resources for teachers.

51

Forest Encyclopedia Network  

NSDL National Science Digital Library

Jointly developed by the USDA Forest Service Southern Research Station and Southern Regional Extension Forestry, this website has multiple online encyclopedias regarding the forests of the Southern United States, as well as one that covers the environmental threats facing all North American forests. This website is very user-friendly, both for visitors who are not natural resource professionals and those who are. For those visitors who are involved in the forest sciences, this website helpfully provides "scientific results, conclusions, and impacts with management needs and issues." On the left side of the page is a menu which allows the visitor to peruse the site through a thematic lens, or a global one. To view by theme, click on "Thematic" at the top of the menu. The themes visitors can click on include "So. Appalachian", "So. Pine Beetle", and "So. Fire Science". Under each theme are a multitude of clickable subthemes. For those visitors looking for a global view of the site, click on "Global" at the top of the menu. Topics include "Landscape", "Ecology", "Socio-Economics", and "Forest Health Protection". Forest scientists interested in contributing new scientific content to the Forest Encyclopedia Network can click on "Help" at the top of the website, which will take them to a link on the left side of the page entitled "Author Help".

52

The New Georgia Encyclopedia  

NSDL National Science Digital Library

Sponsored by the Georgia Humanities Council, in partnership with the Office of the Governor and the University of Georgia Press, the New Georgia Encyclopedia represents an ambitious effort to create an authoritative online resource for literally hundreds of topics about the state of Georgia. It would seem that they are well on their way to reaching their goal of 1600 original articles by January 2006, as visitors can select from a number of broad topics to browse through, including: folklife, education, religion, and transportation. Within each topic, there are numerous subtopics, leading the way to individual articles. One rather nice feature of the Encyclopedia is that each article is accompanied by a list of suggested reading, and in many cases, there are hyperlinks to relevant external sites. The site also provides links to basic Quick Facts about the state, galleries featuring the works of prominent museums through the state, and a Features area, which each month hones-in on any number of topics, such as Creek Leaders of Georgia and Twelve Great Works of Georgia Fiction. From Hank Aaron to the Yazoo Land Fraud, this site is a fine fountain of information about the people, places, and traditions of the Peach State.

53

Encyclopedia Reviews 1978  

ERIC Educational Resources Information Center

Reviews thirteen 1978 edition encyclopedias: Book of Art, Britannica Jr., Britannica 3, Childcraft, Collier's, Compton's. Encyclopedia Americana, Funk & Wagnalls, Merit Students, New Caton, Random House, New Standard, and World Book. (SB)

Minemier, Betty

1978-01-01

54

Encyclopedia Britannica: The 1911 Edition  

NSDL National Science Digital Library

For students, teachers, parents, and researchers who do not have immediate access to encyclopedic information, fret no longer; the 1911 edition of the Encyclopedia Britannica is now online. This encyclopedic resource contains 29 volumes and consists of articles written by more than 1,500 authors within their various fields of expertise. Although this is an innovative and enriching resource tool, it is important to keep in mind the time period in which this particular edition was published.

2002-01-01

55

The Encyclopedia of Cleveland History  

NSDL National Science Digital Library

Sitting on the banks of Lake Erie, the city of Cleveland has been an industrial powerhouse for over a century, and its history is a fascinating one. This online encyclopedia of Cleveland history was created with the cooperation of the history department at Case Western Reserve University, along with the assistance of other scholars. David D. VanTassel and John J. Grabowski compiled the encyclopedia, and visitors can perform a full-text search across all of the articles here as well as the image gallery. Visitors may wish to start by taking a look at the "Foreword" and the "Readers' Guide", both of which can be found in the "Supplementary Text" area. Visitors who wish to browse around in a thematic fashion will want to consult the "Subjects" area, which organizes the articles from "African American History" to "Zoo".

56

31 CFR 363.22 - Who has the right to conduct online transactions in book-entry securities?  

Code of Federal Regulations, 2013 CFR

... false Who has the right to conduct online transactions in book-entry securities? 363.22 Section 363.22 Money and...363.22 Who has the right to conduct online transactions in book-entry securities? (a) Individual â(1) Single...

2013-07-01

57

National Park Service: Environmental Contaminants Encyclopedia  

NSDL National Science Digital Library

This resource from the National Park Service contains a wealth of information central to the growing field of environmental toxicology. The site consists of a searchable encyclopedia of 118 environmental contaminants, from Acenaphthene to Zinc. With information on chemical elements, compounds, and products, the EC Encyclopedia also serves as a reference for determining the potential impact of the concentration of a certain substance. Entries are in Adobe Acrobat (.pdf) format and include background information, specific threats, and other related material. Complete reference information (the Referenc.pdf file) is also available.

1998-01-01

58

Encyclopedia Roundup 1985.  

ERIC Educational Resources Information Center

This second annual encyclopedia summary updates the American Library Association's (ALA) evaluation of 10 sets and analyzes the deletions and additions made to each encyclopedia within the context of each publisher's revision plans. The board looked specifically for significant changes in purpose, arrangement, content style, general quality, and…

American Library Association, Chicago, IL.

59

Encyclopedia of energy  

Microsoft Academic Search

The McGraw-Hill Encyclopedia of Energy with its more than 300 articles written by specialists is designed to aid the student, librarian, scientist, engineer, teacher, and lay reader with information on any aspect of energy from the economic and political to the environmental and technological. The Encyclopedia is arranged in two parts. The first part, ''Energy Perspectives,'' has six feature articles:

Lapedes

1976-01-01

60

A prototype electronic encyclopedia  

Microsoft Academic Search

We describe a prototype electronic encyclopedia implemented on a powerful personal computer, in which user interface, media presentation, and knowledge representation techniques are applied to improving access to a knowledge resource. In itself, an electronic encyclopedia is an important information resource, but this work also illustrates the issues and approaches for many types of electronic information retrieval environments. In the

Stephen A. Weyer; Alan H. Borning

1985-01-01

61

EERI/IAEE World Housing Encyclopedia  

NSDL National Science Digital Library

This online Encyclopedia of Housing Construction Types is a joint project between two prominent earthquake engineering organizations. It is intended to help engineers make buildings in regions of high seismic activity less susceptible to damage, and hopefully save lives. A large amount of housing information is given for many different countries. Hazard maps show areas that are most at risk. Building descriptions describe common construction types and structural features, and suggest seismic strengthening technologies that can be implemented. Much of the encyclopedia's material is contributed by architects and engineers around the world, and more volunteers are welcome.

2005-12-29

62

The Encyclopedia of World History  

NSDL National Science Digital Library

The good people at Bartleby.com have long prided themselves on providing a host of important works online for the benefit of those seeking online edification. One of the more recent volumes they have placed on their site is The Encyclopedia of World History, edited by Peter N. Stearns and 30 fellow historians. As the preface to this, the sixth edition, announces: "Simply put, this is a volume that has always intended to convey the key features of world history". This is no small order, and this edition represents a substantial revision from previous editions, as it also reflects the growing body of knowledge about the histories of regions outside of Western Europe and North America. The encyclopedia is complemented by a number of illustrative and informative maps, including ones that visualize India before the Muslim conquest and Italy in the 15th century. Users of the volume are welcome to use the search engine to find the information they so desire, or they may browse at their leisure.

63

Encyclopedia of the NOAA National Marine Sanctuaries  

NSDL National Science Digital Library

The Encyclopedia of the Sanctuaries offers photos, streaming video and important facts for more than 100 key animal and plant species from each of the national marine sanctuaries. It allows users to search for their favorite species or browse the wildlife of each sanctuary by category, ranging from spiny lobster to killer whales and from white-tipped reef sharks to sea anemones. The encyclopedia entry for each species includes a photo, quick facts, information about its diet, habitat, distribution and status, and links to outside resources. Many of the entries also offer engaging, high-quality video clips of species in their natural habitats, making this an entertaining and informative resource for educators, students of all ages, zoos and aquaria, science and technology centers, and natural history museums.

2005-10-10

64

Digital Encyclopedia: George Washington's Mount Vernon  

NSDL National Science Digital Library

What was George Washington's life like at Mount Vernon? This frequent question is answered in fine form by this Digital Encyclopedia, compiled by a variety of scholars in collaboration with the Mount Vernon Estate. It is particularly appropriate that there is such a copious compendium of facts on the goings-on at Mt. Vernon, as Washington was enamored of encyclopedias during his life. Drawing on a range of primary sources, this project brings together hundreds of entries divided into over a dozen topics, including Military, Slavery, Food and Drink, and Animals. The Personal area is quite compelling, as it includes entries on Barbados, smallpox and, of course, the celebrated myths surrounding Washington's false teeth.

65

Encyclopedia as Textbook  

NASA Astrophysics Data System (ADS)

Textbooks and encyclopedias represent different genres of scientific literature. Textbooks help the students to prepare for their examinations in various subjects taught at schools, such as logic, metaphysic, chemistry. In the 17th Century some Calvinist professors, mostly in Germany, thought that a universal wholeness should be taught for the students. Encyclopedias adequately expressed this vision. Some of these professors, including Johannes Alsted, were invited to Hungary, Transylvania, to introduce the encyclopedic spirit to the local schools. This act fostered the first textbook in Hungarian language written by János Apáczai Csere. This book was an encyclopedia born mostly in the Netherlands where the author studied. The Cartesian philosophy combined with a Ramist system served as the basis of the book. Its history shows how the local conditions influence the content of knowledge incorporated into a textbook.

Palló, Gábor

2006-11-01

66

Encyclopedia of Indianapolis  

NSDL National Science Digital Library

In the past few decades, a number of large American cities have embarked on ambitious encyclopedia projects to document their history, culture, and geography. Indianapolis was one such city, and this impressive 1,600-page encyclopedia was published in 1994. Today, a digitized version resides on this Indiana University-Purdue University Indianapolis website, where it offers a wonderful way to learn about Indiana's largest city. Visitors can search the encyclopedia at their leisure, while the viewer makes it quite simple to print out selected pages and to zoom in and out on each page. The volume has a dozen overview essays covering broadcasting, African-Americans, cultural institutions, education, and journalism. Anyone with an interest in urban history and all things Hoosier will find this work to be tremendously valuable.

67

The Encyclopedia of Pennsylvania Biography  

NSDL National Science Digital Library

Published from time to time from 1914 to 1967, The Encyclopedia of Pennsylvania Biography was the product of the Lewis Publishing Company. These massive tomes profiled a range of persons who had risen to prominence in the Keystone State. Recently, the Pennsylvania State University Libraries digitized the first volumes published before 1923 and placed them online here. Visitors can search through all of the volumes, and they are also encouraged to type in keywords like "Drexel", "Franklin", and "Furness" to get started. The site also includes the "Who's Who in Pennsylvania" books from 1904 and 1908. These works feature notable personages from the early 20th century, and they can also be read as historical documents that offer a portrait of the movers and shakers of their era.

68

Higher Data Quality by Online Data-Entry and Automated Plausibility Checks  

NASA Astrophysics Data System (ADS)

Long-term phenological observations are now recognized as important indicators for climate change impact studies. With the increased need for phenological data, there is also an increased need for higher data quality. Since 1951 MeteoSwiss has been operating a national phenological observation network. Currently the network consists of about 150 active stations observing up to 69 different phenophases. An important aim of a running three years project at MeteoSwiss is a further increase of the quality of the collected data. The higher data quality will be achieved by an automated procedure performing plausibility checks on the data and by online data-entry. Further measures such as intensified observer instructions and collection of more detailed metadata also contribute to a high data quality standard. The plausibility checks include the natural order of the phenophases within a species and also between different species (with regard to possible natural deviation). Additionally it will be checked if the observed date differs by less than two standard deviations from the average for this phenophase at the altitude of the station. A value outside of these limits is not necessarily a false value, since occurrences of extreme values will be beyond these limits. Therefore, within this check of the limits, the timing of the season of the respective year will also be taken into account. In case of an implausible value a comparison with other stations of the same region and sea level is proposed. A further possibility of data quality control could be to model the different phenophases statistically and to use this model for estimating the likelihood of observed values. An overall exploratory data analysis is currently performed providing a solid basis to implement the best possible methods for the plausibility checks. Important advantages of online data-entry are the near real-time availability of the data as well as the avoidance of various kinds of typical mistakes (month-lag, typing errors, etc.). The combination of online data-entry and automated plausibility checking makes it possible to contact the observer promptly in case of implausible data. Therefore a further aim is to create an easy tool for data-entry by PC, tablet or smartphone. A promising step in this direction is the internet platform PhaenoNet (a common platform of GLOBE Swiss, MeteoSwiss and the ETH Zurich). In 2013 already 25 % of the MeteoSwiss phenological observers used PhaenoNet.

Pietragalla, Barbara; Sigg, Christian; Güsewell, Sabine; Clot, Bernard

2014-05-01

69

The Microsoft Multimedia Encyclopedia.  

ERIC Educational Resources Information Center

A multimedia encyclopedia (MME) demonstration disk has been developed by the Microsoft Corporation, which contains five-page articles on 12 subjects. Each article contains text, images, audio, and in some cases, animation and full motion digital images. Each MME article is constructed as a network of linked text, image, and sound files. With mouse…

Ropiequet, Suzanne

1986-01-01

70

Encyclopedia of Education, 1980.  

ERIC Educational Resources Information Center

Ten articles, taken from the "Encyclopedia Yearbook of China, 1980," provide a comprehensive survey of Chinese education in the post-Mao era. Topics discussed include educational administration; preschool, elementary, secondary, and higher education; technical schools; special education; physical education; education for the workers; teacher…

Chinese Education, 1981

1981-01-01

71

Encyclopedia as Textbook  

ERIC Educational Resources Information Center

Textbooks and encyclopedias represent different genres of scientific literature. Textbooks help the students to prepare for their examinations in various subjects taught at schools, such as logic, metaphysic, chemistry. In the 17th Century some Calvinist professors, mostly in Germany, thought that a universal wholeness should be taught for the…

Pallo, Gabor

2006-01-01

72

The encyclopedia of life  

Microsoft Academic Search

Comparative biology, crossing the digital divide, has begun a still largely unheralded revolution: the exploration and analysis of biodiversity at a vastly accelerated pace. Its momentum will return systematics from its long sojourn at the margin and back into the mainstream of science. Its principal achievement will be a single-portal electronic encyclopedia of life.

Edward O. Wilson

2003-01-01

73

Encyclopedia of Terrorism.  

ERIC Educational Resources Information Center

As recent terrorist attacks on the United States, such as the Oklahoma City (Oklahoma) bombing, and the ongoing conflicts in the Middle East have shown, terrorism is an unfortunate reality that can have potentially devastating effects on governments, businesses, and individuals. This encyclopedia provides students, researchers, journalists, and…

Combs, Cindy C.; Slann, Martin

74

Iteratively Reweighted Least Squares - Encyclopedia Entry.  

National Technical Information Service (NTIS)

Iteratively Reweighted least Squares (IRLS) is a computationally attractive method for providing estimated regression coefficient that are relatively unaffected by extreme observations. Definitions and statistical justifications are reviewed, and a numeri...

D. B. Rubin

1982-01-01

75

The Encyclopedia of Suns  

NSDL National Science Digital Library

Welcome to the Encyclopedia of Suns! Many people are interested in astronomical research that touches on the relationship between astronomy and biology, or at least the possibility of biology on planets other than Earth. The popularity of research efforts such as the Search for Extraterrestrial Intelligence (SETI) and extrasolar planet discovery, especially among the public, shows how strong a hold these ideas have. Currently, the Encyclopedia of Suns contains over 100 stars within 50 light years (15.3 parsecs) from the Sun. It contains all stars within that distance that meet specific criteria for being plausible locations for Earthlike planets. It also has some stars outside the 50 light year limit: those that are not only Sunlike, but which also have one or more planets orbiting them.

Nash, David

2009-05-22

76

1985 international petroleum encyclopedia  

SciTech Connect

This encyclopedia contains a 141-page oil and gas atlas section. New to the 1985 edition are: special reports detailing busy times in Canada's offshore waters; a special report on heavy oil; the latest action in Alaska's North Slope operations; a special section on the conflict in the Persian Gulf, home of most of the world's production and reserves; a discussion of the many mergers in the industry; and a new country-by-country refinery survey.

Not Available

1985-01-01

77

Better Homes and Gardens Home Improvement Encyclopedia  

NSDL National Science Digital Library

Despite the commercial intentions of the site, this free online guide to home repair is superior to many similar offerings on the Web. Organized in five principle sections (Plumbing, Wiring, Carpentry, Decks, and Masonry & Concrete), the Encyclopedia covers a good variety of subtopics, from selecting and buying lumber to replacing a faucet or water heater to pouring concrete. Generally aimed at users with some skills but not necessarily much experience in home repair, the projects are clearly explained, with generous illustrations and, in some cases, an "Animated How-To." Project information includes estimated time, required skills and tools, cautions, and links to related projects. Additional resources include a glossary, tool encyclopedia, and an internal search engine.

78

Out for a Spin: A School Librarian Test Drives 14 CD-ROM Encyclopedias.  

ERIC Educational Resources Information Center

A school librarian reviews CD-ROM encyclopedias, determining their suitability for school and public library use with children and young adults, and favoring content and accessibility over special features and multimedia enhancements. Outlines essential considerations when choosing encyclopedias (price, network and print versions, and online

Del Vecchio, Stephen

1997-01-01

79

The Transcription Factor Encyclopedia  

PubMed Central

Here we present the Transcription Factor Encyclopedia (TFe), a new web-based compendium of mini review articles on transcription factors (TFs) that is founded on the principles of open access and collaboration. Our consortium of over 100 researchers has collectively contributed over 130 mini review articles on pertinent human, mouse and rat TFs. Notable features of the TFe website include a high-quality PDF generator and web API for programmatic data retrieval. TFe aims to rapidly educate scientists about the TFs they encounter through the delivery of succinct summaries written and vetted by experts in the field. TFe is available at http://www.cisreg.ca/tfe.

2012-01-01

80

Exploring the Link among Entry Characteristics, Participation Behaviors and Course Outcomes of Online Learners: An Examination of Learner Profile Using Cluster Analysis  

ERIC Educational Resources Information Center

Online learner profiles have diversified such that now, they include all types of participants from a variety of backgrounds. This study analyzed online learner profiles in regard to their entry characteristics, participation behaviors and achievement of course outcomes. The sample consisted of 186 participants from an online course that required…

Yukselturk, Erman; Top, Ercan

2013-01-01

81

On-line entry and analysis of computer center operations logs  

SciTech Connect

This paper describes the CLARET system (Computer Logging and RETrieval) developed at Lawrence Livermore National Laboratory to gather computer center operations information directly into an on-line data base. This system replaces a manual logging system with its attendant problems of illegibility and lack of standardization. Much attention has been devoted to the design of the data entry phase in order to make it both natural to use and yet sufficiently strict to ensure that the information complies with data base requirements. The resulting marriage between a highly interactive, screen-oriented front end and a data base system has provided the dual benefits of more complete information and greater flexibility in using that information. Distribution of the information has been similarly improved since not only are the logs automatically printed for normal distribution, but they can also be viewed from remote terminals both while in progress and after completion. Finally, the resultant data base is available to any computer user for viewing and analysis.

Frobose, R.H.; Wilgus, C.A.

1983-01-01

82

Regulatory Fish Encyclopedia (RFE)  

NSDL National Science Digital Library

The Regulatory Fish Encyclopedia (RFE) was developed by the US Food and Drug Administration "to help federal, state, and local officials and purchasers of seafood identify species substitution and economic deception in the marketplace." As such, the RFE is a compilation of data in several formats (including photographic and imaging parameters, specific isoelectric focusing, DNA sequence patterns, protein patterns, and taxonomic authentication) "that assists with the accurate identification of fish species." Fish and other seafood types are listed by common, regional, market, scientific, and family names, and the site also provides images of some whole fish and market cuts. Additional detailed scientific and taxonomic information is available for some species, but researchers will find the site's varied techniques for identification most useful.

Center for Food Safety and Applied Nutrition (U.S.). Office of Seafood.; Affairs., United S.

2005-12-07

83

Building the Encyclopedia of Life  

NASA Astrophysics Data System (ADS)

The Encyclopedia of Life (EOL) is a collaborative project that indexes information about species, and makes it freely accessible to anyone. In order to accomplish this, EOL is building collaborative tools and infrastructure to unify the information.

Mangiafico, P. A.; Patterson, D. J.

2010-04-01

84

Encyclopedia of Life Sciences: Sample Content  

NSDL National Science Digital Library

Hey, scientists! Want to take a fun and productive break from the lab? Read the sample content from Nature Online compiled at The Encyclopedia of Life Sciences (ELS) Website. Although the bulk of the site requires a paid subscription, ELS, a new online database of more than 3,000 original peer-reviewed articles, offers a few free-access sections. Selections from Nature research and news articles are posted in the non-subscription Article of the Week, Research Highlights, and Feature of the Month sections. Recent Research Highlights include dancing honeybees, chromosome pairing, and Antarctic ecology. Visitors to ELS can also see lists of new and upcoming content and check out job listings. To reach the free stuff, choose "Browse our free features" from the ELS homepage.

2007-07-11

85

Encyclopedia of Software Components  

NASA Technical Reports Server (NTRS)

Intelligent browsing through a collection of reusable software components is facilitated with a computer having a video monitor and a user input interface such as a keyboard or a mouse for transmitting user selections, by presenting a picture of encyclopedia volumes with respective visible labels referring to types of software, in accordance with a metaphor in which each volume includes a page having a list of general topics under the software type of the volume and pages having lists of software components for each one of the generic topics, altering the picture to open one of the volumes in response to an initial user selection specifying the one volume to display on the monitor a picture of the page thereof having the list of general topics and altering the picture to display the page thereof having a list of software components under one of the general topics in response to a next user selection specifying the one general topic, and then presenting a picture of a set of different informative plates depicting different types of information about one of the software components in response to a further user selection specifying the one component.

Warren, Lloyd V. (Inventor); Beckman, Brian C. (Inventor)

1997-01-01

86

Encyclopedia of software components  

NASA Technical Reports Server (NTRS)

Intelligent browsing through a collection of reusable software components is facilitated with a computer having a video monitor and a user input interface such as a keyboard or a mouse for transmitting user selections, by presenting a picture of encyclopedia volumes with respective visible labels referring to types of software, in accordance with a metaphor in which each volume includes a page having a list of general topics under the software type of the volume and pages having lists of software components for each one of the generic topics, altering the picture to open one of the volumes in response to an initial user selection specifying the one volume to display on the monitor a picture of the page thereof having the list of general topics and altering the picture to display the page thereof having a list of software components under one of the general topics in response to a next user selection specifying the one general topic, and then presenting a picture of a set of different informative plates depicting different types of information about one of the software components in response to a further user selection specifying the one component.

Vanwarren, Lloyd (inventor); Beckman, Brian C. (inventor)

1991-01-01

87

Dekker Encyclopedia of Nanoscience and Nanotechnology, 2nd edition, 6 volumes set  

SciTech Connect

PREFACE TO SECOND EDITION The science of the ultra small nanoscience has dramatically exploded during the last few years, and the technologies operating with ultra small things the nanotechnologies acquired quickly a firm position in today s world of business, technological development, and public perception. Several factors contributed to the acceleration of scientific knowledge and technological progress in the last decades, among which the rapid development of fast computers, availability of high-resolution analytical techniques, and the progress of molecular biology and genetics are probably the most important. The result was an unprecedented expansion of the frontiers of science, which empowered the human genius with unlimited options of top-down and bottom-up methods for manipulation of materials structure and control of properties at multiple levels, from atomic to molecular, supramolecular, and biomolecular. Already a distinctive mark of 21st century, nanoscience and nanotechnology will certainly have a steadily increasing influence on the quality of life and the environment of this Planet for centuries to come. Dekker Encyclopedia of Nanoscience and Nanotechnology, Second Edition provides a comprehensive and detailed review, from multiple angles, of major developments in the human s quest for understanding and mastering of physical, chemical and biological objects and structures having at least one dimension smaller than about 100 nm. Under the expert supervision of the late Professor James A. Schwarz, Marcel Dekker, Inc. published the first edition in 2004 to great acclaim. The success of first edition, the development of the title through online updates, and the dynamics of this continuously growing field has created a high demand for a second edition only four years after the first edition. The second edition offers updated and revised entries, along with many additions that reflect the focus towards energy and environmental issues currently in the news. The new edition is expanded to six volumes. All entry titles have been revised to better reflect to the entry's content, while optimized for alphabetical listing. In addition, a comprehensive (though not exhaustive) topical table of contents has been designed, structured on 24 major topics and almost 100 subtopics. With a robust and efficient indexing system and staggered bleed tabs, this second print edition will be a useful reference tool for scientists in academia and national laboratories, engineers, students, as well as entrepreneurs, policy makers, and opinion builders. The online version of the Encyclopedia offers quick access to individual entries in HTML or PDF format, enriched graphical content, hundreds of color illustrations and photographs, and an efficient keyword search engine. Cristian I. Contescu Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA Karol Putyera Shiva Technologies, Syracuse, New York, USA July 2008

Contescu, Cristian I [ORNL] [ORNL; Putyera, Karol [Shiva Technologies, Syracuse NY] [Shiva Technologies, Syracuse NY

2008-01-01

88

Teaching with Games: Online Resources and Examples for Entry Level Courses  

NASA Astrophysics Data System (ADS)

Using games to teach introductory geoscience can motivate students to enthusiastically learn material that they might otherwise condemn as "boring". A good educational game is one that immerses the players in the material and engages them for as long as it takes to master that material. There are some good geoscience games already available, but instructors can also create their own, suitable to their students and the content that they are teaching. Game-Based Learning is a module on the Starting Point website for faculty teaching entry level geosciences. It assists faculty in using games in their teaching by providing a description of the features of game-based learning, why you would use it, how to use games to teach geoscience, examples, and references. Other issues discussed include the development of video games for teaching, having your students create educational games, what makes a good game, handling competition in the classroom, and grading. The examples include descriptions of and rules for a GPS treasure hunt, a geology quiz show, and an earthquake game, as well as links to several online geological video games, and advice on how to design a paleontology board game. Starting Point is intended to help both experienced faculty and new instructors meet the challenge of teaching introductory geoscience classes, including environmental science and oceanography as well as more traditional geology classes. For many students, these classes are both the first and the last college-level science class that they will ever take. They need to learn enough about the Earth in that one class to sustain them for many decades as voters, consumers, and sometimes even as teachers. Starting Point is produced by a group of authors working with the Science Education Resource Center. It contains dozens of detailed examples categorized by geoscience topic with advice about using them and assessing learning. Each example is linked to one of many modules, such as Game-Based Learning, Interactive Lectures, or Using an Earth History Approach. These modules describe teaching tools and techniques, provide examples and advice about using them in an introductory geoscience class, and give instructors details on how to create their own exercises.

Teed, R.; Manduca, C.

2004-12-01

89

The Encyclopedia of Arkansas History & Culture  

NSDL National Science Digital Library

The mission of the Encyclopedia of Arkansas History & Culture is "to collect and disseminate information on all aspects of the state's history and culture and to provide a comprehensive reference work for historians, teachers, students and individuals for the purpose of promoting the study, understanding, and appreciation of Arkansas's heritage." First-time visitors should check out the This Day in Arkansas History feature, which provides easy access to the lore, culture, history, and geography of the state. Moving on, visitors can use the Browse Entries area to look around the material by category, type, time period, or race & ethnicity. Those persons looking for a bit of audio-visual inspiration will want to click on over to the Browse Media area. Here, they can find songs performed by sons and daughters of Arkansas (including the legendary Al Hibbler), maps, and video clips from films like "Emerson County Shaping Dream" and "Unhooking the Hookworm."

90

The Encyclopedia of Diderot & d'Alembert  

NSDL National Science Digital Library

Widely considered to be one of the crowning achievements of the Enlightenment, the Encyclopedia edited by Denis Diderot and Jean le Rond d'Alembert in the 18th century has proved to be fertile ground for those who have sought to classify and chronicle the various branches of knowledge. This highly ambitious project was published during the period 1751 to 1777, and included 32 volumes amply illustrated with engraved plates. Close to 150 years later, a group of talented individuals sought to create an online version of the Encyclopedia translated into English, with links to the original French versions. The project is based at the University of Michigan Library, although contributors to the project are scattered across the world. Visitors to the site can search the currently available articles or browse by title, French title, or subject. Finally, visitors will want to take a look at the famous "Map of the System of Human Knowledge" that is immediately identified with this most celebrated human endeavor.

91

Music Heritage Network Instrument Encyclopedia  

NSDL National Science Digital Library

The Music Heritage Network Instrument Encyclopedia is an initiative of the CHICO (Cultural Heritage Information and Community Outreach) project at the University of Michigan's School of Information (SI). SI cooperated with the School of Music's Stearns Museum of Musical Instruments to develop this comprehensive resource about instruments from around the world. Users may browse the encyclopedia by the Sachs-Hornbostel classification scheme, by geographic origin, or by four major instrument types: percussion, string, wind, and electronic. Users may also conduct full-text searches, or they may search the encyclopedia by instrument title, origin, maker, materials, or description. In addition, an instrument glossary as well as links to other instrument reference resources are available at the site.

1999-01-01

92

The Encyclopedia of Earth  

NSDL National Science Digital Library

This online reference contains articles about the Earth, its natural environments, and their interaction with society. The articles are written by scholars, professionals, educators, and experts who collaborate and review each other's work. The articles are written in non-technical language and will be useful to students, educators, scholars, professionals, as well as to the general public.

2007-04-17

93

Encyclopedia of Physics, 2 Volumes  

Microsoft Academic Search

The editors of this Encyclopedia, earlier editions of which met with international acclaim, have now provided a fully revised, expanded and updated third edition of this comprehensive reference work. In two volumes, 500 experts -- among them several Nobel laureates and numerous other scientific award winners -- offer a comprehensive and topical account of physics and the physical world. The

Rita G. Lerner; George L. Trigg

2005-01-01

94

Encyclopedia of the Cold War  

Microsoft Academic Search

Between 1945 and 1991, tension between the USA, its allies, and a group of nations led by the USSR, dominated world politics. This period was called the Cold War – a conflict that stopped short to a full-blown war. Benefiting from the recent research of newly open archives, the Encyclopedia of the Cold War discusses how this state of perpetual

Dijk van R

2008-01-01

95

Wolbachia pipientis - Encyclopedia of Life  

NSDL National Science Digital Library

This Encyclopedia of Life species page offers a comprehensive summary of the biology, ecology, evolution and relevance of Wolbachia pipientis. It includes an interactive media panel with images, videos and distribution maps, as well as a navigable classification structure. The page is supplemented with links to literature references, educational opportunities and additional research links.

Life, Encyclopedia O.

96

First Entry: Report on a Qualitative Exploratory Study of Novice User Experience with Online Finding Aids  

ERIC Educational Resources Information Center

Many of those now accessing archives through online finding aids are encountering primary materials (albeit virtually) for the first time. These users are often unfamiliar with finding aid structure, terminology, and principles. This article reports on a qualitative, exploratory study of a subset of these novice users. The study concentrated on…

Scheir, Wendy

2005-01-01

97

Encyclopedia of Law and Economics  

NSDL National Science Digital Library

Conceived by the University of Ghent, Belgium, the Encyclopedia of Law and Economics Website is a broad-based collection of resources pertaining to economic and legal issues throughout the world. Showcasing a comprehensive index of searchable bibliographic resources, this site also includes abstracts of recent law and economics reviews. The hefty Law and Economics Web Resources section features working papers, bibliographies, and mailing lists. In addition, the site links to law and economics academic programs, associations, and an array of relevant Websites.

2005-12-15

98

Encyclopedia of Analytical Chemistry Free Sample Articles  

NSDL National Science Digital Library

From publishers John Wiley and Sons, Ltd., the Encyclopedia of Analytical Chemistry, considered the "most comprehensive analytical chemistry reference available," is due for publication in October 2000. In anticipation of the release of this fifteen-volume set, the publisher has posted a teaser: seventeen articles are freely available on the encyclopedia's Website. By completing a simple form, users may access representative articles (in .pdf format) from encyclopedia sections such as Peptides and Proteins; Electroanalytic Methods; Infrared, X-ray, and Mass Spectroscopy; Remote Sensing; and more. Libraries or wealthy individuals interested in ordering the Encyclopedia of Analytical Chemistry ($4,800) may do so at the site.

99

Multimedia Encyclopedias Take Off: Warp Speed through the Reference Universe.  

ERIC Educational Resources Information Center

Examines the development of multimedia encyclopedias. Discusses print versus electronic materials; technological advances; interactivity; costs; content and costs of particular multimedia encyclopedias; and a future perspective. A sidebar compares cultural icons in encyclopedias. (AEF)

Kister, Ken

1995-01-01

100

Re-entry: online virtual worlds as a healing space for veterans  

NASA Astrophysics Data System (ADS)

We describe a project designed to use the power of online virtual worlds as a place of camaraderie and healing for returning United States military veterans-a virtual space that can help them deal with problems related to their time of service and also assist in their reintegration into society. This veterans' space is being built in Second Life®, a popular immersive world, under consultation with medical experts and psychologists, with several types of both social and healing activities planned. In addition, we address several barrier issues with virtual worlds, including lack of guides or helpers to ensure the participants have a quality experience. To solve some of these issues, we are porting the advanced intelligence of the ICT's virtual human characters to avatars in Second Life®, so they will be able to greet the veterans, converse with them, guide them to relevant activities, and serve as informational agents for healing options. In this way such "avatar agents" will serve as autonomous intelligent characters that bring maximum engagement and functionality to the veterans' space. This part of the effort expands online worlds beyond their existing capabilities, as currently a human being must operate each avatar in the virtual world; few autonomous characters exist. As this project progresses we will engage in an iterative design process with veteran participants who will be able to advise us, along with the medical community, on what efforts are well suited to, and most effective within, the virtual world.

Morie, Jacquelyn Ford

2009-02-01

101

Encyclopedia of Physics, 2 Volumes  

NASA Astrophysics Data System (ADS)

The editors of this Encyclopedia, earlier editions of which met with international acclaim, have now provided a fully revised, expanded and updated third edition of this comprehensive reference work. In two volumes, 500 experts -- among them several Nobel laureates and numerous other scientific award winners -- offer a comprehensive and topical account of physics and the physical world. The volumes comprise more than 500 articles, which have either been completely updated or are altogether new, covering the latest terminology and techniques in physics, including atomic trapping and cooling, biophotonics, econophysics, the formation of stars and planets, quantum communication, space science and technology, and traffic flow.

Lerner, Rita G.; Trigg, George L.

2005-12-01

102

Encyclopedia of Music in Canada  

NSDL National Science Digital Library

The Encyclopedia of Music in Canada offers instant access to a complete reference of everything musical in Canada. This second edition of the Website is offered by the National Library of Canada and seeks to "reflect Canadian music's richness and diversity." Presented in French and English, the staggeringly large amount of information can be searched or browsed easily. As an example, when browsing under the letter "a," over 3,500 matches are given including artists, genres, instruments, education, organizations, and much more. The site gives clear descriptions and instructions, allowing users a simple, informative, and up-to-date resource.

2001-01-01

103

Comprehensive Astronomical Visualization for a Multimedia Encyclopedia  

Microsoft Academic Search

The domain of astronomy contributes a wealth of knowledge to the corpus of any general encyclopedia. Modern multimedia encyclopedias are capable of displaying complex, three-dimensional visualizations in real-time, enabling the integration of a planetarium, a virtual theater presenting astronomical facts in an educational and entertaining way. The manifold peculiarities of astronomical data sets require careful balancing of visual means to

Wolfgang Kienreich; Mario Zechner; Vedran Sabol

2007-01-01

104

Multimedia Technology. An Encyclopedia Publisher's Perspective.  

ERIC Educational Resources Information Center

This paper describes the Grolier Publishing Company's development of its encyclopedic text database by editing the machine-readable data files from which the Academic American Encyclopedia was printed, and its longer-term objective of creating a multimedia encyclopedia when the technology for a viable delivery system becomes available. Topics…

Cook, Peter

1986-01-01

105

Encyclopedia of Antarctica and the Southern Oceans  

NASA Astrophysics Data System (ADS)

With so much information just a keystroke away on the World Wide Web, is there still a need for encyclopedias? I think so. Yes, the Web provides access to a plethora of information, if you only know what to look for. It presupposes that you know enough to navigate the maze. An encyclopedia lays out information in neat alphabetical order. One can look up a specific item, as one can search the Web; this is, perhaps, the traditional way in which an encyclopedia is used. But the pages of an encyclopedia can be browsed more casually than can the Web, and perhaps more importantly, without a specific topic in mind, which provides more of a learning exercise. I have spent many hours randomly flipping through pages of an encyclopedia, always fascinated and absorbed by subjects I didn't know existed.

Gordon, Arnold L.

106

SYMBOLS.com: Encyclopedia of Western Signs and Ideograms  

NSDL National Science Digital Library

Provided by HME Media, this site is an online version of Carl G. Liungman's Thought Signs (1995), an encyclopedia of graphic symbols. The site contains more than 2,500 Western signs, arranged into 54 groups according to their graphic characteristics. Ranging from Cro-Magnon carvings in mammoth teeth to hobo signs and subway graffiti, the signs are explained and examined in 1,600 articles. Users may search for the meaning or history of a sign in the Graphic Index or use the Word Index to find an ideogram with a certain meaning.

Liungman, Carl G., 1938-.

1997-01-01

107

The Grolier World Encyclopedia of Endangered Species.  

ERIC Educational Resources Information Center

Reviews "The Grolier World Encyclopedia of Endangered Species" and describes a lesson plan for grades five and six that includes library media skills objectives, science objectives, resources, instructional roles, activity and procedure for completion, evaluation, and follow-up. (LRW)

Martin, Ron

1994-01-01

108

GEOSCOPE: An Interactive Global Change Encyclopedia.  

National Technical Information Service (NTIS)

An interactive global change encyclopedia (GEOSCOPE), portraying the contribution that remote sensing from space can make to the monitoring of global environmental change on Earth, is being produced for the International Space Year (ISY) in 1992. The data...

R. Simard

1992-01-01

109

The MIT Encyclopedia of Cognitive Sciences (MITECS)  

NSDL National Science Digital Library

The MIT Encyclopedia of Cognitive Sciences (MITECS), an electronic publication of the MIT Press, is a new comprehensive reference work that encompasses the diverse theories and methodologies of the cognitive and brain sciences. The encyclopedia contains 471 specialized articles by preeminent researchers and scholars; articles include extensive bibliographies and provide multiple cross-references. MITECS spans six major topics: Philosophy; Psychology; Neuroscience; Computational Intelligence; Linguistics and Language; and Culture, Cognition, and Evolution. The introductory essays that precede each major section discuss topics within the larger framework of the cognitive sciences. The encyclopedia may be browsed by an author or a topic index, and the entire work is searchable by keyword. Please note that first-time users of the encyclopedia are required to register at the site; necessary registration information includes email address, full name, and research interests.

2005-11-07

110

"U-X-L Encyclopedia of U. S. History" Hones Students' Subject Search and Indexing Skills  

ERIC Educational Resources Information Center

This article features the "U-X-L Encyclopedia of U.S. History" by Sonia Benson, Daniel E. Brannen, Jr., and Rebecca Valentine is a new eight-volume set available in print or ebook (2009). The set has 1,745 pages and 677 entries ranging from just under one page to around eight pages in length. The ebook option may be accessed through Gale Virtual…

Krueger, Karla

2010-01-01

111

Popular Encyclopedias as a Source of Information about Copyright: A Critical Comparison.  

ERIC Educational Resources Information Center

Rating of five multi-volume encyclopedias ("Collier's Encyclopedia,""Encyclopedia Americana,""Encyclopedia Britannica (EB3),""World Book Encyclopedia,""Academic American Encyclopedia") used 20 evaluation criteria to determine usefulness in answering reference questions concerning copyright. Results indicate that "Collier's" is most useful for…

Miller, Jerome K.

1983-01-01

112

Perceived Credibility of Internet Encyclopedias  

ERIC Educational Resources Information Center

A vast amount of information is now available online, produced by a variety of sources with a range of editorial oversight procedures. These range from very centralized information with multiple layers of review, to no oversight at all. Determining which information is credible can pose a real challenge. An experiment was designed to determine…

Kubiszewski, Ida; Noordewier, Thomas; Costanza, Robert

2011-01-01

113

Internet Encyclopedia of Philosophy: Logical Paradoxes  

NSDL National Science Digital Library

For those who believe the Web fosters only barely mindful surfing, we offer the following site as counterargument. Not to be confused with fallacies are paradoxes: "a puzzling conclusion we seem to be driven towards by our reasoning, but which is highly counterintuitive, nevertheless" -- also known as brainteasers for logicians. The Internet Encyclopedia of Philosophy (see the August 14, 1998 Scout Report) presents a thorough discussion of paradoxes in the context of the history of philosophy, covering paradoxes of both classical and modern origins in addition to those of self-reference and a few others. A bibliography is also available as well as links to further discussions of paradoxes within the Encyclopedia.

Slater, Barry H.

2001-01-01

114

McGraw-Hill Encyclopedia of Astronomy  

NASA Astrophysics Data System (ADS)

Observational, theoretical, and experimental aspects of astronomy are presented in 230 articles selected from the fifth edition of the McGraw-Hill Encyclopedia of Science and Technology (1982). Observation techniques and instruments are characterized, and numerous photographs, diagrams, graphs, and tables are provided.

Parker, S. P.

115

Encyclopedia of Smart Materials, 2 Volume Set  

Microsoft Academic Search

Smart materials--materials and structures that can impart information about their environment to an observer or monitoring device--are revolutionizing fields as diverse as engineering, optics, and medical technology. Advances in smart materials are impacting disciplines across the scientific and technological landscape. Now, practictioners and researchers have an authoritative source to go to for answers about this emerging new area. Encyclopedia of

Mel Schwartz

2002-01-01

116

The ENCODE (ENCyclopedia Of DNA Elements) Project  

Microsoft Academic Search

The ENCyclopedia Of DNA Elements (ENCODE) Project aims to identify all functional elements in the human genome sequence. The pilot phase of the Project is focused on a specified 30 megabases (~1%) of the human genome sequence and is organized as an international consortium of computational and laboratory-based scientists working to develop and apply high-throughput approaches for detecting all sequence

2004-01-01

117

The MIT Encyclopedia of the Cognitive Sciences  

Microsoft Academic Search

The MIT Encyclopedia of the Cognitive Sciences (MITECS) brings together 471 brief articles on a very wide range of topics within cognitive science. The general editors worked with advisory editors in six contributing fields, including Gennaro Chierchia on Lin- guistics and Language and Michael I. Jordan and Stuart Russell on Computational Intelligence. MITECS opens with excellent overview articles by each

Robert A. Wilson; Frank C. Keil; John Nerbonne

1999-01-01

118

KEGG: Kyoto Encyclopedia of Genes and Genomes  

Microsoft Academic Search

Kyoto Encyclopedia of Genes and Genomes (KEGG) is a knowledge base for systematic analysis of gene functions in terms of the networks of genes and molecules. The major component of KEGG is the PATHWAY database that consists of graphical dia- grams of biochemical pathways including most of the known metabolic pathways and some of the known regulatory pathways. The pathway

Hiroyuki Ogata; Susumu Goto; Kazushige Sato; Wataru Fujibuchi; Hidemasa Bono; Minoru Kanehisa

1999-01-01

119

Reach for Reference: A New Early Encyclopedia  

ERIC Educational Resources Information Center

This article reviews the new Grolier Student Encyclopedia, intended for grades three through eight. Good middle-level readers might become frustrated with this source, but primary and intermediate students, middle-level students reading below grade level, and English language learners of any age will find the style of information presentation…

Safford, Barbara Ripp

2005-01-01

120

Encyclopedia of Bilingualism and Bilingual Education.  

ERIC Educational Resources Information Center

This encyclopedia is designed to promote bilingualism in a comprehensive and comprehensive manner and to be academically sound while remaining accessible to as wide an audience as possible. Each topic is presented in a clear, understandable style. Four sections focus on the following: (1) "Individual Bilingualism" (e.g., bilingualism and the…

Baker, Colin; Jones, Sylvia Prys

121

The Relationship between Learning Styles and Online Education among Entry-Level Doctor of Pharmacy Degree Students  

ERIC Educational Resources Information Center

The goal of this study is to investigate the relationship between the preferred learning styles of professional pharmacy students and their performance/success in a hybrid PharmD pharmacy program making extensive use of online content. Consequently, the study will look for early detection factors which can impact the performance of the student…

Bernier, Jose

2009-01-01

122

The Encyclopedia of Astrobiology, Astronomy, and Spaceflight  

NSDL National Science Digital Library

Visitors can learn astonishing facts in historical astronomy, astrobiology, astrophysics, space missions, and many more space science topics at this comprehensive website. David Darling, a British astronomer and science writer, provides straightforward explanations of seemingly difficult concepts. In addition to an easily navigable alphabetical list and a keyword search, the encyclopedia is interlinked so that users can easily progress through the materials. The website also features the latest space science news stories as well as archives of exciting events.

123

Kyoto Encyclopedia of Genes and Genomes  

NSDL National Science Digital Library

The Kyoto Encyclopedia of Genes and Genomes, an ongoing project from Kyoto University, has recently updated this collection of molecular interaction information. The Introduction section provides substantial information on the project background and data, as well as user guides and manuals to help users orient themselves to the database. Users can search for information on specific interactions in selected species, or browse to find metabolic pathways or gene sequences of interest. Computational tools include the ability to find similar sequences and generate possible reactions between compounds.

2002-01-01

124

Encyclopedia of 20th-Century American Humor.  

ERIC Educational Resources Information Center

This reference encyclopedia contains information on both the historical and contemporary aspects of humor and comedy in the United States. Arranged in an A-to-Z format, the encyclopedia is a collection of article-length essays that examine humor from many perspectives, from defining terms; to providing information on humor writers, comedians, and…

Nilsen, Alleen Pace; Nilsen, Don L. F.

125

images.MD–The Online Encyclopedia of Medical Images  

Microsoft Academic Search

images.MD is a searchable collection of more than 70,000 medical images, charts, and tables from atlases published by The Current Medical Group LLC. Images may be saved and used for personal study or teaching.

Christee King

2009-01-01

126

CONTEXT-AWARE MOBILE LEARNING WITH PEDIAPHON - A TEXT-TO-SPEECH INTERFACE TO THE FREE WIKIPEDIA ENCYCLOPEDIA FOR CELL PHONES AND MP3-PLAYERS  

Microsoft Academic Search

This paper presents an approach to generate audio based learning material dynamically from web pages for m-Learning and ubiquitous access. It introduces Pediaphon (an audio interface to the free Wikipedia online encyclopedia) as an example application for microlearning. The effective generation and the deployment of the audio data to the user via podcast or progressive download (pseudo streaming) are covered.

Andreas Bischoff

127

Virtual Knowledge: The Best Buys in 1998 CD-ROM Encyclopedias.  

ERIC Educational Resources Information Center

Discusses questions to consider and features to look for in selecting a CD-ROM encyclopedia. Reviews Encyclopaedia Britannica CD 98 Multimedia Edition, Compton's Interactive Encyclopedia 1998, Microsoft Encarta 98 Encyclopedia, and Grolier Multimedia Encyclopedia 1998. Contact information, price, and system requirements are listed. (JAK)

Burg, Barbara; Kautzman, Amy M.

1998-01-01

128

Web-based encyclopedia on physical effects  

NASA Astrophysics Data System (ADS)

Web-based learning applications open new horizons for educators. In this work we present the computer encyclopedia designed to overcome drawbacks of traditional paper information sources such as awkward search, low update rate, limited copies count and high cost. Moreover, we intended to improve access and search functions in comparison with some Internet sources in order to make it more convenient. The system is developed using modern Java technologies (Jave Servlets, Java Server Pages) and contains systemized information about most important and explored physical effects. It also may be used in other fields of science. The system is accessible via Intranet/Internet networks by means of any up-to-date Internet browser. It may be used for general learning purposes and as a study guide or tutorial for performing laboratory works.

Papliatseyeu, Andrey; Repich, Maryna; Ilyushonak, Boris; Hurbo, Aliaksandr; Makarava, Katerina; Lutkovski, Vladimir M.

2004-07-01

129

Contemporary Biographies from the Large Soviet Encyclopedia. Volume 5.  

National Technical Information Service (NTIS)

The report contains biographical articles on living Soviet personalities included in the Large Soviet Encyclopedia. The information has been reproduced in file-card format for convenience in filing. (Author)

A. M. Prokhorov

1972-01-01

130

State-of-the-Art Multimedia in 1996: The "Big Four" General Encyclopedias on CD-ROM.  

ERIC Educational Resources Information Center

Reviews four CD-ROM encyclopedias: Compton's Interactive Encyclopedia, 1996 Edition; Microsoft Encarta 96 Encyclopedia; the 1996 Grolier Multimedia Encyclopedia; and World Book Multimedia Encyclopedia 1996. Focuses on multimedia features, their quantity, quality, accessibility, and playability. Discusses each product's novel features and important…

Jacso, Peter

1996-01-01

131

Gender and Education. An Encyclopedia. Volume I  

ERIC Educational Resources Information Center

In this two volume set, educators explore the intersection of gender and education. Their entries deal with educational theories, research, curricula, practices, personnel, and policies, but also with variations in the gendering of education across historical and cultural contexts. The various contributors discuss gender as a social construction.…

Bank, Barbara J., Ed.

2007-01-01

132

Gender and Education. An Encyclopedia. Volume II  

ERIC Educational Resources Information Center

This book represents the second of two volumes in a two-volume set where educators explore the intersection of gender and education. Their entries deal with educational theories, research, curricula, practices, personnel, and policies, but also with variations in the gendering of education across historical and cultural contexts. The various…

Bank, Barbara J., Ed.

2007-01-01

133

Proteopedia: Exciting Advances in the 3D Encyclopedia of Biomolecular Structure  

NASA Astrophysics Data System (ADS)

Proteopedia is a collaborative, 3D web-encyclopedia of protein, nucleic acid and other structures. Proteopedia ( http://www.proteopedia.org ) presents 3D biomolecule structures in a broadly accessible manner to a diverse scientific audience through easy-to-use molecular visualization tools integrated into a wiki environment that anyone with a user account can edit. We describe recent advances in the web resource in the areas of content and software. In terms of content, we describe a large growth in user-added content as well as improvements in automatically-generated content for all PDB entry pages in the resource. In terms of software, we describe new features ranging from the capability to create pages hidden from public view to the capability to export pages for offline viewing. New software features also include an improved file-handling system and availability of biological assemblies of protein structures alongside their asymmetric units.

Prilusky, Jaime; Hodis, Eran; Sussman, Joel L.

134

Palm & Cycad Societies of Florida: Virtual Cycad Encyclopedia  

NSDL National Science Digital Library

From the Palm & Cycad Societies of Florida, the Virtual Cycad Encyclopedia is great resource for information and stories about the ancient cycads. The Encyclopedia comprises numerous articles organized under such topics as Cycad Taxonomy, Biology, Evolution, Horticulture, Conservation, and more. Examples of encyclopedia articles include: a 59-frame slide show on Growing and Collecting Cycads; an interactive Key to Cycad Genera; an older article on Pollination Biology of Cycads co-authored by staff at the New York Botanical Garden and the Fairchild Tropical Garden; and a Compiled List of Cycad Genera. The site also contains a Photo Gallery with many good-quality cycad images listed by scientific name. Site visitors will also find a collection of related links, and a list of reference books.

135

The Encyclopedia of Life: Describing Species, Unifying Biology  

NSDL National Science Digital Library

Harvard biologist E. O. Wilson affirmed a perennial hope of biologists, taxonomists, and naturalists when in 2003 he wrote, âÂÂAn all-species encyclopedia of life is logically inevitable if for no other reason that the consolidation of biological knowledge is urgently overdue.â Wilson proceeded with his vision of a Web-based encyclopedia in which there is a page devoted to each species on Earth, with links to diverse scientific databases. The species page, as envisaged, would summarize everything known about the species, from its genome and proteome to its distribution, habitat, and ecological relationships, as well as âÂÂits practical importance for humanity.â In May 2007, the Encyclopedia of Life (EOL) was officially launched, with support from the Sloan and MacArthur foundations.

Richard Blaustein (freelancer;)

2009-07-01

136

Online Motivational Factors: Incentives for Participation and Contribution in Wikipedia  

Microsoft Academic Search

Cyberspace has introduced new and intriguing means for knowledge shar- ing as well as new structures of mediated knowledge-building communities. Considering the various forms of online communities, it should be difficult to overstate the significance of Wikipedia as a landmark in building communal knowledge repositories. Wikipedia is an online collaboratively written encyclopedia. It has unique aspects of users' involvement in

Sheizaf Rafaeli; Yaron Ariel

2008-01-01

137

Boyhood in America: An Encyclopedia. Volumes 1 and 2. The American Family.  

ERIC Educational Resources Information Center

This encyclopedia is the first reference work to focus on the life and history of U.S. boyhood through the centuries. Coverage in the encyclopedia spans education, ethnicity, sports, work, religion, and health issues. The encyclopedia's expert contributors approach topics from many disciplines, including history, cultural studies, media studies,…

Clement, Priscilla Ferguson, Ed.; Reinier, Jacqueline S., Ed.

138

Encyclopedia of Youth and War: Young People as Participants and Victims.  

ERIC Educational Resources Information Center

This encyclopedia provides comprehensive information on youth and war. Beginning with the 30 Years' War in the 17th century and ending with the conflicts in Bosnia and Kosovo, the encyclopedia covers children and youth from birth to age 18, with additional materials on young adults from 18 to 24 years of age. The encyclopedia includes over 300…

Sherrow, Victoria

139

McGraw Hill encyclopedia of science and technology. An international reference work in fifteen volumes including an index  

SciTech Connect

This extensively revised and updated 5th Edition features contributions by 3000 distinguished experts - including 16 Nobel Prize winners - working with an international advisory board and 60 consulting editors. Thorough coverage is devoted to 75 separate disciplines in science and technology, from acoustics and biochemistry through fluid mechanics and geophysics to thermodynamics and vertebrate zoology. Detailed entries examine not only the physical and natural sciences, but also all engineering disciplines, discussing both the basic and the most recent theories, concepts, terminology, discoveries, materials, methods, and techniques. All of the new developments and technical advances that have occurred during the last five years - in each of the 75 disciplines - have been added to the encyclopedia and are explored in depth. Completely new material deals with such timely and newsworthy subjects as genetic engineering, artificial intelligence, nuclear medicine, desertification, psycholinguistics, industrial robots, and immunoassay. Also covered in extensive entries are such current topics as video disk recording, metallic glasses, acoustic levitation, magnetic bubble memory, gluons, and computerized tomography. The encyclopedia includes more than 15,000 photographs, drawings, maps, charts, and diagrams, shown in full-color, two-color, or black-and-white reproductions.

Not Available

1982-01-01

140

Towards a History of the Encyclopedia from Jerome to Isidor.  

ERIC Educational Resources Information Center

Traces the evolution of the idea of an encyclopedia from Jerome, who worked mainly in Caesarea in Palestine towards the end of the Roman Empire, through the work of Augustine, Martianus Capella, Boethius, and Cassiodorus Senator, to Isidor, who worked in Seville on the eve of the Carolingian Renaissance. (LLS)

Jackson, S.

1981-01-01

141

Global change encyclopedia: A project for the International Space Year  

Microsoft Academic Search

``Global Change Encyclopedia'' is a project for the International Space Year in 1992. The project will produce a comprehensive set of satellite and other global data with relevance to studies of global change and of the Earth as a system. These data will be packaged on CD-ROMs, accompanied by appropriate software for access, display and manipulation. On behalf of the

J. Cihlar; R. Simard; M. Manore; R. Baker; D. Clark; J. Kineman; J. Allen; M. Ruzek

1991-01-01

142

The Good, the Bad and the Dead! Using Encyclopedias.  

ERIC Educational Resources Information Center

Presents a lesson plan in which students use an encyclopedia to research a famous person. Identifies library media skills objectives, curriculum (subject area objectives), grade levels (4 and 5), resources, instructional roles, activity and procedures for completion, evaluation guidelines, and follow-up activities. Includes a sample worksheet.…

Bailey, Annette

1998-01-01

143

Encyclopedia of the Elements: Technical Data - History - Processing - Applications  

Microsoft Academic Search

Famous for its history of numerous element discoverers, Sweden is the origin of this comprehensive encyclopedia of the elements. It provides both an important database for professionals as well as detailed reading ranging from historical facts, discoverers' portraits, color plates of mineral types, natural occurrences, and industrial figures right up to winning and refining processes, biological roles and applications in

Per Enghag

2004-01-01

144

A Look at Four Encyclopedias of 1974--Especially Britannica.  

ERIC Educational Resources Information Center

In a panel presentation, Americana, Colliers, Britannica, and World Book encyclopedias were compared. One member described her daughter's experiences in working on Britannica II. The organization of Britannica into a Propaedia, Micropaedia, and a Macropaedia was compared with the alphabetical arrangement of the others. The complex new form was…

Youngstown and Mahoning County Public Library, Youngstown, OH.

145

Transforming text into hypertext for a compact disc encyclopedia  

Microsoft Academic Search

A hypertext version of a multi-volume engineering encyclopedia on a compact disc is described. The methods for characterizing the explicit and implicit structure of the document, the novel user interface to the compact disc version, and the design and development lessons that apply to any hypertext project involving realistic amounts of text and graphics are discussed.

Robert J. Glushko

1989-01-01

146

A Modest Proposal: No More Main Entry.  

ERIC Educational Resources Information Center

Discusses the concept of main entry in MARC bibliographic records based on the definition in the revised second edition of the "Anglo-American Cataloguing Rules." Access points versus entries are considered; differences between card catalog and online catalog environments are examined; and primary access is suggested as an appropriate replacement…

Bierbaum, Esther Green

1994-01-01

147

Modulated Entry  

NASA Technical Reports Server (NTRS)

The technique of modulation, or variable coefficients, is discussed and the analytical formulation is reviewed. Representative numerical results of the use of modulation are shown for the lifting and nonlifting cases. These results include the effects of modulation on peak acceleration, entry corridor, and heat absorption. Results are given for entry at satellite speed and escape speed. The indications are that coefficient modulation on a vehicle with good lifting capability offers the possibility of sizable loading reductions or, alternatively, wider corridors; thus, steep entries become practical from the loading standpoint. The amount of steepness depends on the acceptable heating penalty. The price of sizable fractions of the possible gains does not appear to be excessive.

Grant, Frederick C.

1960-01-01

148

Global change encyclopedia: A project for the International Space Year  

NASA Astrophysics Data System (ADS)

``Global Change Encyclopedia'' is a project for the International Space Year in 1992. The project will produce a comprehensive set of satellite and other global data with relevance to studies of global change and of the Earth as a system. These data will be packaged on CD-ROMs, accompanied by appropriate software for access, display and manipulation. On behalf of the Canadian Space Agency, the project is being carried out by the Canada Centre for Remote Sensing, with the U.S. National Oceanic and Atmospheric Administration and the U.S. National Aeronautics and Space Administration as major contributors. This paper highlights the background leading to the project, the concept and principal characteristics of the Encyclopedia itself, and the current status and plans.

Cihlar, J.; Simard, R.; Manore, M.; Baker, R.; Clark, D.; Kineman, J.; Allen, J.; Ruzek, M.

149

Global Change Encyclopedia - A project for the international space year  

NASA Technical Reports Server (NTRS)

'Global Change Encyclopedia' is a project for the International Space Year in 1992. The project will produce a comprehensive set of satellite and other global data with relevance to studies of global change and of the earth as a system. These data will be packaged on CD-ROMs, accompanied by appropriate software for access, display and manipulation. On behalf of the Canadian Space Agency, the project is being carried out by the Canada Centre for Remote Sensing, with the U.S. National Oceanic and Atmospheric Administration and the U.S. National Aeronautics and Space Administration as major contributors. This paper highlights the background leading to the project, the concept and principal characteristics of the Encyclopedia itself, and the current status and plans.

Cihlar, J.; Simard, R.; Manore, M.; Baker, R.; Clark, D.; Kineman, J.; Allen, J.; Ruzek, M.

1991-01-01

150

Wikipedias: Collaborative web-based encyclopedias as complex networks  

Microsoft Academic Search

Wikipedia is a popular web-based encyclopedia edited freely and\\u000acollaboratively by its users. In this paper we present an analysis of\\u000aWikipedias in several languages as complex networks. The hyperlinks pointing\\u000afrom one Wikipedia article to another are treated as directed links while the\\u000aarticles represent the nodes of the network. We show that many network\\u000acharacteristics are common to

V. Zlati?; M. Boÿziÿcevic; H. Štefan?i?; M. Domazet

2006-01-01

151

Eco Cyc: encyclopedia of Escherichia coli genes and metabolism  

Microsoft Academic Search

The encyclopedia of Escherichia coli genes andmetabolism (EcoCyc) is a database that combinesinformation about the genome and the intermediarymetabolism of E.coli. The database describes 3030genes of E.coli, 695 enzymes encoded by a subset ofthese genes, 595 metabolic reactions that occur inE.coli, and the organization of these reactions into 123metabolic pathways. The EcoCyc graphical user interfaceallows scientists to query and explore

Peter D. Karp; Monica Riley; Suzanne M. Paley; Alida Pellegrini-toole; Markus Krummenacker

1999-01-01

152

EcoCyc: Encyclopedia of Escherichia coli genes and metabolism  

Microsoft Academic Search

The encyclopedia of Escherichia coli genes and metabolism (EcoCyc) is a database that combines information about the genome and the intermediary metabolism of E.coli. The database describes 3030 genes of E.coli, 695 enzymes encoded by a subset of these genes, 595 metabolic reactions that occur in E.coli, and the organization of these reactions into 123 metabolic pathways. The EcoCyc graphical

Peter D. Karp; Monica Riley; Suzanne M. Paley; Alida Pellegrini-toole; Markus Krummenacker

1998-01-01

153

A user interface for the electronic encyclopedia exploratorium  

Microsoft Academic Search

The Electronic Encyclopedia Exploratorium (E3) is a vision of a future computer system—a kind of electronic “HOW Things Work” book. Typical articles in E3 will describe such mechanisms as compression refrigerators, engines, telescopes, and mechanical linkages. Each article will provide simulations, three-dimensional animated graphics that the user can manipulate, laboratory areas that allow a user to modify the device or

Michael Salisbury; Alan Borning

1993-01-01

154

Encyclopedia Smithsonian: FAQs and Guide to Resources A - Z  

NSDL National Science Digital Library

This site, presented by the Smithsonian Institution, gives quick answers to frequently asked questions, available at any time of day or night. Not new but always being improved upon, Encyclopedia Smithsonian includes general information such as admission fees and hours, access to Smithsonian library catalogs, and exhibition calendars. It also provides subject access to the collections of the many Smithsonian museums, without requiring that users know which museum holds the answer to a query. For example, clicking on First Ladies brings one to the U.S. Political History section of the Encyclopedia, which, in addition to listing the collection of First Ladies' gowns at the National Museum of American History, also directs users to a long list of Presidential Historic sites located in all parts of the country, and resources at the National Portrait Gallery. Arranged alphabetically, Encyclopedia Smithsonian is a good starting point for K-12 students, tourists, and anyone looking for a simple approach to the varied riches of the Smithsonian.

155

Integrated Approach for Entry Mission Design and Flight Simulations.  

National Technical Information Service (NTIS)

An integrated approach for entry trajectory design, guidance, and simulation is proposed. The key ingredients for this approach are an on-line 3 degree-of-freedom entry trajectory planning algorithm and the entry guidance algorithm that generates the guid...

P. Lu P. Rao

2004-01-01

156

Comparative Evaluation of Two Systems for the Visual Navigation of Encyclopedia Knowledge Spaces  

Microsoft Academic Search

Modern digital encyclopedias contain hundreds of thousands of textual articles and multimedia elements. Alternative discovery\\u000a techniques facilitating the visual exploration of encyclopedia knowledge spaces have recently received much attention. We\\u000a present the results of a comparative usability evaluation of a two-dimensional and a three-dimensional visualization system\\u000a integrated with the Brockhaus encyclopedia. Both systems enable visual navigation of article context. Results

Wolfgang Kienreich; Peter Kraker

2008-01-01

157

Nonbibliographic Databases Online.  

ERIC Educational Resources Information Center

A directory of 246 nonbibliographic data bases, which are also known as data banks and numeric data bases. Entries are arranged alphabetically by name of data base, followed by name of data base producer, subject content, and online vendor. This directory updates the listing published in Vol. 1, No. 4 of On-Line Review. (JPF)

Online Review, 1978

1978-01-01

158

The Online Reference Book for Medieval Studies  

NSDL National Science Digital Library

The Online Reference Book for Medieval Studies (ORB) site was begun in 1995 to establish an online resource for medievalists and others hoping to disseminate current research in the field and to serve as a repository of previous scholarship for the general public and scholars alike. Edited by Carolyn Schriber of Rhodes College, the site contains an online encyclopedia, updated regularly by various contributors, and a textbook library. The encyclopedia is divided into time periods (e.g., early medieval, high medieval) and thematic areas, such as religion and culture. Highlights of the encyclopedia include a book-length work on medieval English towns and information on the religious orders of the time. The online textbook section contains full-length works, written by experts in their respective medieval fields, for use in the classroom. The site concludes with a helpful section for beginning scholars titled "What Every Medievalist Should Know," and a general interest area for persons seeking to learn more about medieval history.

Blanchard, Laura V.; Schriber, Carolyn.

1995-01-01

159

Subject Encyclopedias: User Guide, Review Citations, and Keyword Index. Part I and Part II.  

ERIC Educational Resources Information Center

This two-volume guide is designed to make subject encyclopedias more accessible. To qualify for inclusion, an encyclopedia must meet the following criteria: new or revised edition published since 1990; coverage by subject (not primarily biographical or geographical); intended audience of high school students, college students, and adults;…

Mirwis, Allan N.

160

Encyclopedia of the Elements: Technical Data - History - Processing - Applications  

NASA Astrophysics Data System (ADS)

Famous for its history of numerous element discoverers, Sweden is the origin of this comprehensive encyclopedia of the elements. It provides both an important database for professionals as well as detailed reading ranging from historical facts, discoverers' portraits, color plates of mineral types, natural occurrences, and industrial figures right up to winning and refining processes, biological roles and applications in modern chemistry, engineering and industry. Elemental data is presented in fact tables that include numerous physical and thermodynamic properties, isotope lists, radiation absorption characteristics, NMR parameters, and others. Further pertinent data is supplied in additional tables throughout the text. Originally published in Swedish in three volumes from 1998 to 2000, the contents have been revised and expanded by the author for this English edition.

Enghag, Per

2004-09-01

161

Wikipedias: collaborative web-based encyclopedias as complex networks.  

PubMed

Wikipedia is a popular web-based encyclopedia edited freely and collaboratively by its users. In this paper we present an analysis of Wikipedias in several languages as complex networks. The hyperlinks pointing from one Wikipedia article to another are treated as directed links while the articles represent the nodes of the network. We show that many network characteristics are common to different language versions of Wikipedia, such as their degree distributions, growth, topology, reciprocity, clustering, assortativity, path lengths, and triad significance profiles. These regularities, found in the ensemble of Wikipedias in different languages and of different sizes, point to the existence of a unique growth process. We also compare Wikipedias to other previously studied networks. PMID:16907159

Zlati?, V; Bozicevi?, M; Stefanci?, H; Domazet, M

2006-07-01

162

A User's Guide to the Encyclopedia of DNA Elements (ENCODE)  

PubMed Central

The mission of the Encyclopedia of DNA Elements (ENCODE) Project is to enable the scientific and medical communities to interpret the human genome sequence and apply it to understand human biology and improve health. The ENCODE Consortium is integrating multiple technologies and approaches in a collective effort to discover and define the functional elements encoded in the human genome, including genes, transcripts, and transcriptional regulatory regions, together with their attendant chromatin states and DNA methylation patterns. In the process, standards to ensure high-quality data have been implemented, and novel algorithms have been developed to facilitate analysis. Data and derived results are made available through a freely accessible database. Here we provide an overview of the project and the resources it is generating and illustrate the application of ENCODE data to interpret the human genome.

2011-01-01

163

Genomic encyclopedia of sugar utilization pathways in the Shewanella genus  

PubMed Central

Background Carbohydrates are a primary source of carbon and energy for many bacteria. Accurate projection of known carbohydrate catabolic pathways across diverse bacteria with complete genomes constitutes a substantial challenge due to frequent variations in components of these pathways. To address a practically and fundamentally important challenge of reconstruction of carbohydrate utilization machinery in any microorganism directly from its genomic sequence, we combined a subsystems-based comparative genomic approach with experimental validation of selected bioinformatic predictions by a combination of biochemical, genetic and physiological experiments. Results We applied this integrated approach to systematically map carbohydrate utilization pathways in 19 genomes from the Shewanella genus. The obtained genomic encyclopedia of sugar utilization includes ~170 protein families (mostly metabolic enzymes, transporters and transcriptional regulators) spanning 17 distinct pathways with a mosaic distribution across Shewanella species providing insights into their ecophysiology and adaptive evolution. Phenotypic assays revealed a remarkable consistency between predicted and observed phenotype, an ability to utilize an individual sugar as a sole source of carbon and energy, over the entire matrix of tested strains and sugars. Comparison of the reconstructed catabolic pathways with E. coli identified multiple differences that are manifested at various levels, from the presence or absence of certain sugar catabolic pathways, nonorthologous gene replacements and alternative biochemical routes to a different organization of transcription regulatory networks. Conclusions The reconstructed sugar catabolome in Shewanella spp includes 62 novel isofunctional families of enzymes, transporters, and regulators. In addition to improving our knowledge of genomics and functional organization of carbohydrate utilization in Shewanella, this study led to a substantial expansion of our current version of the Genomic Encyclopedia of Carbohydrate Utilization. A systematic and iterative application of this approach to multiple taxonomic groups of bacteria will further enhance it, creating a knowledge base adequate for the efficient analysis of any newly sequenced genome as well as of the emerging metagenomic data.

2010-01-01

164

Macmillan Encyclopedia of Chemistry (edited by Joseph J. Lagowski)  

NASA Astrophysics Data System (ADS)

Macmillan: New York, 1997. Four volumes. Figs., tables. lxxi + 1696 pp. 22.0 x 28.5 cm. $400. ISBN 0-02-897225-2. This latest addition to Macmillan's series of comprehensive core science encyclopedias (previous sets dealt with physics and earth sciences) will be of particular interest to readers of this Journal, for it is edited by longtime Journal of Chemical Education editor Joe Lagowski, assisted by a board of five distinguished associate editors. The attractively priced set offers clear explanations of the phenomena and concepts of chemistry and its materials, whether found in industry, the laboratory, or the natural world. It is intended for a broad spectrum of readers-professionals whose work draws on chemical concepts and knowledge (e.g., material scientists, engineers, health workers, biotechnologists, mathematicians, and computer programmers), science teachers at all levels from kindergarten to high school, high school and college students interested in medicine or the sciences, college and university professors, and laypersons desiring information on practical aspects of chemistry (e.g., household cleaning products, food and food additives, manufactured materials, herbicides, the human body, sweeteners, and animal communication).

Kauffman, George B.

1998-11-01

165

Genomic encyclopedia of sugar utilization pathways in the Shewanella genus  

SciTech Connect

To address a practically and fundamentally important challenge of reconstruction of carbohydrate utilization machinery in any microorganism directly from its genomic sequence, we have established a subsystems-based comparative approach and applied it to 19 genomes from the Shewanella genus. The key stages of our approach include: (i) a homology-based identification of gene candidates using a genomic compilation of ~500 known components of sugar catabolic pathways; (ii) functional assignment of orthologs and prediction of alternative genes and pathway variants based on genomic (operons, regulons) and functional (subsystems, pathways) context analysis; (iii) validation of bioinformatic predictions by a combination of biochemical, genetic and physiological experiments. The obtained genomic encyclopedia of sugar utilization includes ~170 protein families (mostly metabolic enzymes, transporters and transcriptional regulators) spanning 17 distinct pathways with a mosaic distribution across Shewanella species providing insights into their ecophysiology and adaptive evolution. The reconstructed catabolic pathways are significantly enriched by nonorthologous gene replacements and alternative biochemical routes. Phenotypic assays revealed a remarkable consistency between predicted and observed phenotype, an ability to utilize an individual sugar as a sole source of carbon and energy, over the entire matrix of tested strains and sugars. In addition to improving our knowledge of genomics, functional organization and evolution of the sugar catabolome, this study confirmed the efficiency of the established approach, which is scalable and applicable to other groups of microorganisms.

Rodionov, Dmitry A.; Yang, Chen; Li, Xiaoqing; Rodionova, Irina A.; Wang, Yanbing; Obraztsova, Anna; Zagnitko, Olga P.; Overbeek, Ross; Romine, Margaret F.; Reed, Samantha B.; Fredrickson, Jim K.; Nealson, Kenneth H.; Osterman, Andrei L.

2010-09-13

166

Online Information Retrieval Bibliography  

ERIC Educational Resources Information Center

This is the first update of the bibliography on online information retrieval that was published as a supplement to Vol. 1 of this journal. Entries are divided into seven sections; within each section, they are listed alphabetically by author. Permuted titled (KWIC) and author indexes are included. (Author/JPF)

Hawkins, Donald T.

1978-01-01

167

Reach for Reference. Britannica Online School Edition: Will You Allow Students to Use It?  

ERIC Educational Resources Information Center

This article describes Brittanica's Web-based K-12 resource, "Britannica Online Student Edition." This reference contains three encyclopedia databases: "Britannica" for teachers and older students, the "Student Britannica," and the "Elementary Brittanica." These are supplemented with videos and other media, a spotlight feature, a world atlas, and…

Safford, Barbara Ripp

2005-01-01

168

Online encyclopedia provides free health info for all. Interview by Fiona Fleck.  

PubMed

Within a decade, Wikipedia has become one of the most popular health-content web sites in the world. James Heilman talks to Fiona Fleck about how the once free-wheeling website is moving closer to a formal publication model. PMID:23397345

Heilman, James

2013-01-01

169

Collaborative Authoring on the Web: A Genre Analysis of Online Encyclopedias  

Microsoft Academic Search

This paper presents the results of a genre analysis of two web-based collaborative authoring environments, Wikipedia and Everything2, both of which are intended as repositories of encyclopedic knowledge and are open to contributions from the public. Using corpus linguistic methods and factor analysis of word counts for features of formality and informality, we show that the greater the degree of

William G. Emigh; Susan C. Herring

2005-01-01

170

Waikupanaha ocean entry  

USGS Multimedia Gallery

At the Waikupanaha ocean entry (left), three separate steam plumes merge into one as the wind blows the steam offshore. The west Waikupanaha entry is spread out over a larger area with at least 5 separate lava entry points. This photo was taken looking southeast....

2010-06-21

171

An Integrated Approach for Entry Mission Design and Flight Simulations  

NASA Technical Reports Server (NTRS)

An integrated approach for entry trajectory design, guidance, and simulation is proposed. The key ingredients for this approach are an on-line 3 degree-of-freedom entry trajectory planning algorithm and the entry guidance algorithm that generates the guidance gains automatically. When fully developed, such a tool could enable end-bend entry mission design and simulations in 3DOF and 6DOF mode from de-orbit burn to the TAEM interface and beyond, all in one key stroke. Some preliminary examples of such a capability are presented in this paper that demonstrate the potential of this type of integrated environment.

Lu, Ping; Rao, Prabhakara

2004-01-01

172

Students' and Teachers' Perceptions of Motivation and Learning through the Use in Schools of Multimedia Encyclopedias on CD-ROM.  

ERIC Educational Resources Information Center

Reports results of interviews with teachers, students, and school librarians in eight United Kingdom secondary schools regarding their use of multimedia encyclopedias on CD-ROM. Focuses on a content analysis of their comments on how access to multimedia encyclopedias changes the way students learn, and how they perceive it affects their learning.…

Wishart, Jocelyn

2000-01-01

173

LOCATION BASED CELL PHONE ACCESS TO THE WIKIPEDIA ENCYCLOPEDIA FOR M-LEARNING  

Microsoft Academic Search

This paper describes a new approach to access the content of the free Wikipedia on line encyclopedia with ordinary cell phones. No connection to the mobile Internet is required. Mobile users are able to request Wikipedia articles via SMS or via touch tone input in a voice menu. An audio representation of the requested articles will be generated in real

Andreas Bischoff

174

Parenthood in America: An Encyclopedia. Volumes 1 and 2. The American Family.  

ERIC Educational Resources Information Center

Based on the view that insights from psychology, sociology, and medicine can enhance our understanding of the history of the family, this two-volume encyclopedia focuses on psychological aspects of the parent-child relationship, parenthood, and child development. Cultural, social, and historical matters and biological concepts are discussed when…

Balter, Lawrence, Ed.

175

"Treaties with American Indians: An Encyclopedia of Rights, Conflicts, and Sovereignty"  

ERIC Educational Resources Information Center

This article provides an overview of the three-volume reference set, "Treaties with American Indians: An Encyclopedia of Rights, Conflicts, and Sovereignty" published by ABC-CLIO. This reference work is edited by Donald Fixico, Arizona State University, and dedicated to the people of his tribes: (1) Shawnee; (2) Sac and Fox; (3) Seminole; and (4)…

Krueger, Karla

2009-01-01

176

Girlhood in America: An Encyclopedia. Volumes 1 and 2. The American Family.  

ERIC Educational Resources Information Center

Girls, who used to be second-class citizens, are now coming into their own. Still, girls' lives, their experiences, and their roles in the social, cultural, economic, and political history of the United States have been widely overlooked. This reference encyclopedia presents more than 100 signed articles by 98 high-profile interdisciplinary…

Forman-Brunell, Miriam, Ed.

177

The Family in America: An Encyclopedia. The American Family. Volumes One and Two.  

ERIC Educational Resources Information Center

As the United States changes as a nation, so too, does the family. This two-volume encyclopedia takes an incisive, multidisciplinary look at the American family over the past 200 years, examining public policies, organizations and programs, health and social issues, the family constellation, researchers and theorists, and family customs and…

Hawes, Joseph M., Ed.

178

Effective Educational Programs: Meta-Findings from the Best Evidence Encyclopedia  

ERIC Educational Resources Information Center

One of the major series of reviews in elementary and secondary education is the Best Evidence Encyclopedia, or the BEE. Up to now, findings for systematic reviews have largely been restricted to the reviews themselves, with few cases in which lessons learned across many reviews using similar methods can be synthesized. The completion of the Best…

Slavin, Robert E.; Lake, Cynthia

2009-01-01

179

Theology Journals Online  

NSDL National Science Digital Library

This Website from the Blume Library at St. Mary's University offers a listing with links to over 50 online journals in theology. Each entry provides information as to access (many are free; some by subscription only), affiliation, and in some cases, a brief description of the journal. The sidebar menu also links visitors to relevant online indexes, such as Humanities Abstracts, as well as to internal Websites of related collections such as Theology Periodicals at the Blume Library and Resources for Biblical or Scriptural Analysis.

180

Stardust Entry Reconstruction  

NASA Technical Reports Server (NTRS)

An overview of the reconstruction analyses performed for the Stardust capsule entry is described. The results indicate that the actual entry was very close to the pre-entry predictions. The capsule landed 8.1 km north-northwest of the desired target at Utah Test and Training Range. Analyses of infrared video footage and radar range data (obtained from tracking stations) during the descent show that drogue parachute deployment was 4.8 s later than the pre-entry prediction, while main parachute deployment was 19.3 s earlier than the pre-set timer indicating that main deployment was actually triggered by the backup baroswitch. Reconstruction of a best estimated trajectory revealed that the aerodynamic drag experienced by the capsule during hypersonic flight was within 1% of pre-entry predications. Observations of the heatshield support the pre-entry estimates of small hypersonic angles of attack, since there was very little, if any, charring of the shoulder region or the aftbody. Through this investigation, an overall assertion can be made that all the data gathered from the Stardust capsule entry were consistent with flight performance close to nominal pre-entry predictions. Consequently, the design principles and methodologies utilized for the flight dynamics, aerodynamics, and aerothermodynamics analyses have been corroborated.

Desai, Prasun N.; Qualls, Garry D.

2008-01-01

181

Cablehead side entry sub  

SciTech Connect

Apparatus and method are disclosed for feeding a cablehead assembly into the side of a drill string. The cablehead is passed through a low angle side entrance in a side entry sub into the drill string. A cartridge assembly is seated in the side entrance around the cable to prevent pressure loss through the entry port. The cable is clamped to the outside of the sub to lock the cable in place. The cartridge assembly is thereafter tightened about the cable to seal against pressure loss. A cover plate is secured to the outside of the sub adjacent to the entry port to prevent expulsion of the cartridge.

Barron, C. D.; Kuus, F.

1985-06-25

182

Brazilian Sign Language Lexicography and Technology: Dictionary, Digital Encyclopedia, Chereme-based Sign Retrieval, and Quadriplegic Deaf Communication Systems.  

ERIC Educational Resources Information Center

Discusses the Brazilian Sign language digital encyclopedia, which contains a databank of 5,600 signs glossed in Portuguese and English, along with descriptions and illustrations of their signed form. (Author/VWL)

Capovilla, Fernando C.; Duduchi, Marcelo; Raphael, Walkiria D.; Luz, Renato D.; Rozados, Daniela; Capovilla, Alessandra G. S.; Macedo, Elizeu C.

2003-01-01

183

Australian Governments' Entry Point  

NSDL National Science Digital Library

An example of a site that is powerful in its organization of government information pointers is the National Library of Australia's recently reorganized Australian Governments' Entry Point. The Australian Governments' Entry Point has connections to commonwealth, state, and local government information, as well as judicial information. Although the information pointed to by this site is by no means new, it acts as a gateway to information at all geographical levels of government in Australia.

Australia., National L.

184

EcoCyc: an encyclopedia of Escherichia coli genes and metabolism  

Microsoft Academic Search

The encyclopedia of Escherichia coli genes and metab- olism (EcoCyc) is a database that combines information about the genome and the intermediary metabolism of E.coli. It describes 2034 genes, 306 enzymes encoded by these genes, 580 metabolic reactions that occur in E.coli and the organization of these reactions into 100 meta- bolic pathways. The EcoCyc graphical user interface allows query

Peter D. Karp; Monica Riley; Suzanne M. Paley; Alida Pellegrini-toole

1996-01-01

185

Note regarding the word 'behavior' in glossaries of introductory textbooks, dictionaries, and encyclopedias devoted to psychology.  

PubMed

Glossaries of introductory textbooks in psychology, biology, and animal behavior were surveyed to find whether they induded the word 'behavior'. In addition to texts, encyclopedias and dictionaries devoted to the study of behavior were also surveyed. Of the 138 tests sampled across all three fields, only 38 (27%) included the term 'behavior' in their glossaries. Of the 15 encyclopedias and dictionaries surveyed, only 5 defined 'behavior'. To assess whether the term 'behavior' has disappeared from textbook glossaries or whether it has usually been absent, we sampled 23 introductory psychology texts written from 1886 to 1958. Only two texts contained glossaries, and the word 'behavior' was defined in both. An informal survey was conducted of students enrolled in introductory classes in psychology, biology, and animal behavior to provide data on the consistency of definitions. Students were asked to "define the word 'behavior'." Analysis indicated the definition was dependent upon the course. We suggest that future introductory textbook authors and editors of psychology-based dictionaries and encyclopedias include 'behavior' in their glossaries. PMID:16383094

Abramson, Charles I; Place, Aaron J

2005-10-01

186

Predictor-Corrector Entry Guidance for Reusable Launch Vehicles.  

National Technical Information Service (NTIS)

An online entry guidance algorithm has been developed using a predictor-corrector approach. The algorithm is designed for the Reusable Launch Vehicle (RLV) and is demonstrated by using, the X-33 model. The objective of the design is to handle widely dispe...

H. Youssef R. Chowdhry H. Lee C. Zimmerman

2001-01-01

187

Online Pharmacies  

MedlinePLUS

MENU Return to Web version Online Pharmacies Is it safe to buy medicines online? It can be safe to buy your medicines online, but you need to be very ... new or more serious health problems. Illegal online pharmacies might not be licensed; might send you medicines ...

188

Online, Inc.  

NSDL National Science Digital Library

The Online, Inc. site contains selections from four magazines including Online, Database, CD-ROM Professional, and MultiMedia Schools. Tables of contents, selected articles, columns, and indexes are available for these Online, Inc. magazines. General information about subscribing to and writing for these magazines is also included. Registration and program information for the Online CD-ROM Conference and Exposition, and other events sponsored by Online, Inc., is also available.

189

Project Re-Entry.  

ERIC Educational Resources Information Center

Project Re-Entry was a follow-up study of the status of more than 5,000 former students of the Tri-County Opportunities Industrialization Center (OIC) in Harrisburg, Pennsylvania, who either never completed the entire General Educational Development (GED) test battery or completed the entire GED battery but still lacked enough points to earn a GED…

Tri-County Opportunities Industrialization Center, Inc., Harrisburg, PA.

190

Virus entry by macropinocytosis  

Microsoft Academic Search

As obligatory intracellular parasites, viruses rely on host-cell functions for most aspects of their replication cycle. This is born out during entry, when most viruses that infect vertebrate and insect cells exploit the endocytic activities of the host cell to move into the cytoplasm. Viruses belonging to vaccinia, adeno, picorna and other virus families have been reported to take advantage

Jason Mercer; Ari Helenius

2009-01-01

191

Think Exit at Entry  

ERIC Educational Resources Information Center

This paper describes the "Think Exit at Entry" program that has become the guiding principle for the Georgia Department of Juvenile Justice (DJJ). The Georgia DJJ believes that the transition process begins the day the youth enters the system and continues well after release from the institution. Literature points the need for transition planning…

O'Rourke, Tom; Satterfield, Coy E.

2005-01-01

192

Waikupanaha Ocean Entry  

USGS Multimedia Gallery

The Waikupanaha ocean entry remains active with its typical white steam plume blowing inland. The Hawaii County viewing area is marked by the white dots just below and left of the image center. The viewing area trailhead is at the white structure at the far right. ...

2010-06-21

193

9. FIRST FLOOR, ENTRY HALL, LOOKING SOUTHWEST TOWARDS FRONT ENTRY ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

9. FIRST FLOOR, ENTRY HALL, LOOKING SOUTHWEST TOWARDS FRONT ENTRY WITH OPEN DOORWAY TO WINDER STAIRWAY ON RIGHT - Open Gate Farm, House, Ridge Road, 1 mile East of Elephant Road, Perkasie, Bucks County, PA

194

Cytokines Online Pathfinder Encyclopaedia  

NSDL National Science Digital Library

The Cytokines Online Pathfinder Encyclopaedia (COPE) is the brainchild of Horst Ibelgaufts of Germany's Ludwig-Maximilians-Universit't Gene Center. Part super-glossary, part general guide to the "jungles, morasses, and deserts of cytokine-land," this incredibly extensive Web site helps researchers stay on top of newly identified proteins and previously identified but recently reevaluated proteins. As of February 2003, COPE contains over 8,700 entries, which have been mercifully grouped into sub-glossaries by subject: apoptosis, cell lines, chemokines, cytokine topics, hematology, metalloproteinases virokines, viroceptors, and virulence factors.

1997-01-01

195

Atmospheric Entry Studies for Uranus  

NASA Astrophysics Data System (ADS)

To better understand the technology requirements for a Uranus atmospheric entry probe, an internal NASA study funded by ISPT program was conducted. The talk describes two different approaches to the planet: 1) direct ballistic entry and 2) Aerocapture.

Agrawal, P.; Allen, G. A.; Hwang, H. H.; Marley, M. S.; McGuire, M. K.; Garcia, J. A.; Sklyanskiy, E.; Huynh, L. C.; Moses, R. W.

2014-06-01

196

Entry and Schumpeterian profits  

Microsoft Academic Search

A large empirical literature has documented differences in Schumpeterian profits, both among firms in single industries and\\u000a between firms in different industries. Theorists have proposed various institutional and strategic factors to account for\\u000a such differences but have had relatively little to say about the manner in which technology affects entry and profits. In\\u000a this paper I present a model in

Philip E. Auerswald

2010-01-01

197

Online Games  

NSDL National Science Digital Library

This is the home of resource collections that support the use of online games and environments for teaching geoscience. There is now a collection of relevant references, examples of online games, and ideas for teaching with online games suggested by participants in the Spring 2008 workshop.

198

Hans Spemann (1869-1941): Biography  

NSDL National Science Digital Library

An online encyclopedia entry about the embryologist and Nobel Prize Winner, Hans Spemann, including his landmark experiments on induction of differentiation of one tissue by another called the Organizer.

Karen Wellner (Arizona State University)

2011-09-20

199

Viktor Hamburger, Embryologist  

NSDL National Science Digital Library

An online encyclopedia entry about the embryologist, Viktor Hamburger, including a photo and links to other articles about his associates and work. A photo of him in 1933 is linked to this submission.

Adam R Navis (Arizona State University Center for Biology and Society)

2011-09-20

200

Hans Spemann, Embryologist: 1931 Photo  

NSDL National Science Digital Library

A photo connected with an online encyclopedia entry about the embryologist and Nobel Prize Winner, Hans Spemann, including links to other articles about his associates and work and another photo of him.

The Embryo Project (Arizona State University Center for Biology and Society)

2011-11-13

201

Hans Spemann, Embryologist: 1936 Photo  

NSDL National Science Digital Library

A photo connected with an online encyclopedia entry about the embryologist and Nobel Prize Winner, Hans Spemann, including links to other articles about his associates and work and another photo of him.

The Embryo Project (Arizona State University Center for Biology and Society)

2011-11-13

202

19 CFR 147.11 - Entry.  

Code of Federal Regulations, 2013 CFR

...form of entry to read substantially as follows: Entry for Exhibition Entry No. ______ Entry at the port of...on the ______ day of _________, 19__, for exhibition purposes under the Trade Fair Act of 1959. Mark...

2013-04-01

203

Legal Encyclopedia  

NSDL National Science Digital Library

This site, provided by Nolo Press, a publisher of self-help law books and software, is a handy compendium of brief advice on fifteen topics, including small business, patent, copyright & trademark, legal research, wills & estate planning, and real estate. Content is composed of excerpted articles from Nolo books on the topics. Also provided are annotated lists of links related to each topic. While the purpose, of course, is to sell Nolo books and software, there is much useful content here.

204

Planetary entry experiments  

NASA Technical Reports Server (NTRS)

The final report summarizes the results from three research areas: (1) window design for the radiometric measurement of the forebody radiative heating experienced by atmospheric entry spaceraft; (2) survey of the current understanding of chemical species on selected solar system bodies and assess the importance of measurements with regard to vehicle environment and with regard to understanding of planetary atmospheres with emphasis on Venus, Mars, and Titan; and (3) measure and analyze the radiation (VUV to near-IR) from the shock heated gas cap of a blunt body in an Ames arc Jet wind-tunnel facility.

Craig, Roger A.

1994-01-01

205

Entry guidance and entry autopilot (STS-1 baseline)  

NASA Technical Reports Server (NTRS)

Preliminary entry guidance and autopilot software formulations, for use in the Mission Control Center (MCC) entry processor, are presented. The MCC requirements are met by a definition of coordinate systems, a list of parameter definitions for the software formulations, a description of the entry guidance detailed formulation requirements, a description of the detailed autopilot formualtion requirements, a description of the targeting routine, and a set of formulation flow charts.

Harpold, J. C.; Hill, O.

1980-01-01

206

New type of electronic encyclopedia for boys and girls-an application of multimedia videos to consumer electronics  

Microsoft Academic Search

A progressive concept of an electronic encyclopedia has been proposed for boys and girls in order to satisfy their interest in nature, i.e., butterflies and\\/or wild birds. Based on the new concept, a system application has been developed utilizing the integrated technologies of the computer systems, communication networks, and consumer electronics. Center facilities and navigation are important features of the

Kayo Suzuki; Mitsuru Nagao; Akira Muraki; Hiroaki Ikeda

1997-01-01

207

The Mysterious Case of the Detective as Child Hero: Sherlock Holmes, Encyclopedia Brown and Nancy Drew as Role Models?  

ERIC Educational Resources Information Center

In the mystery genre, the one characteristic that the enduring figures of Sherlock Holmes, Nancy Drew, and Encyclopedia Brown have in common is a rational mind. The source of their strength is their ability to think and think well. A study examined some typical examples of the mystery genre in young adult literature and surveyed children and…

Sugarman, Sally

208

Information-Seeking Processes of Junior High School Students: A Case Study of CD-ROM Encyclopedia Use.  

ERIC Educational Resources Information Center

Examined the information-seeking processes of junior high school students from Inuvik, Northwest Territories (Canada) when using CD-ROM encyclopedias. Results showed that students need instruction and practice to develop skills and strategies for full-text searching, particularly generating search terms, selecting topics from a retrieved list, and…

Branch, Jennifer L.

2001-01-01

209

Reconstruction of the Stardust Entry  

NASA Technical Reports Server (NTRS)

An overview of the reconstruction analyses performed for the Stardust capsule entry is described. The results indicate that the actual entry was very close to the pre-entry predictions. The capsule landed 8.1 km northwest of the desired target at Utah Test and Training Range. Frequency analysis on the infrared video data indicates that the aerodynamics generated for the Stardust capsule reasonably predicted the drag and static stability. Observations of the heatshield support the pre-entry simulation estimates of a small hypersonic angles-of-attack, since there is very little, if any, charring of the shoulder region or the aftbody. Through this investigation, an overall assertion can be made that all the data gathered from the Stardust entry is consistent with flight performance close to the nominal pre-entry prediction. Consequently, the design principles and methodologies utilized for the flight dynamics, aerodynamics, and aerothermodynamics analyses have been corroborated.

Desai, Prasun N.; Qualls, Garry D.

2007-01-01

210

Online Investing  

NSDL National Science Digital Library

Sponsored by the Wall Street Journal, this site provides a collection of articles offering information and advice on several aspects of online investing. Stemming from a newly published book, Online Investing, by the editors and reporters of the online version of the Wall Street Journal, the site is divided into five "chapters" covering types of online investing, including stocks, bonds, mutual funds, futures and options, and tools of the trade. The articles are well written and offer very basic information for novices looking for sound information and advice on this kind of investing.

211

Translating the ENCyclopedia Of DNA Elements Project findings to the clinic: ENCODE's implications for eye disease.  

PubMed

Approximately 10 years after the Human Genome Project unravelled the sequence of our DNA, the ENCyclopedia Of DNA Elements (ENCODE) Project sought to interpret it. Data from the recently completed project have shed new light on the proportion of biologically active human DNA, assigning a biochemical role to much of the sequence previously considered to be 'junk'. Many of these newly catalogued functional elements represent epigenetic mechanisms involved in regulation of gene expression. Analogous to an Ishihara plate, a gene-coding region of DNA (target dots) only comes into context when the non-coding DNA (surrounding dots) is appreciated. In this review we provide an overview of the ENCODE project, discussing the significance of these data for ophthalmic research and eye disease. The novel insights afforded by the ENCODE project will in time allow for the development of new therapeutic strategies in the management of common blinding disorders. PMID:24433357

Sanfilippo, Paul G; Hewitt, Alex W

2014-01-01

212

EcoCyc: an encyclopedia of Escherichia coli genes and metabolism.  

PubMed

The encyclopedia of Escherichia coli genes and metabolism (EcoCyc) is a database that combines information about the genome and the intermediary metabolism of E.coli. It describes 2034 genes, 306 enzymes encoded by these genes, 580 metabolic reactions that occur in E.coli and the organization of these reactions into 100 metabolic pathways. The EcoCyc graphical user interface allows query and exploration of the EcoCyc database using visualization tools such as genomic map browsers and automatic layouts of metabolic pathways. EcoCyc spans the space from sequence to function to allow investigation of an unusually broad range of questions. EcoCyc can be thought of as both an electronic review article, because of its copious references to the primary literature, and as an in silico model of E.coli that can be probed and analyzed through computational means. PMID:8594595

Karp, P D; Riley, M; Paley, S M; Pelligrini-Toole, A

1996-01-01

213

Oxford English Dictionary Online  

NSDL National Science Digital Library

On Tuesday, the Oxford University Press placed the world's most famous dictionary, the OED, on the Web. Individual and institutional subscribers will now have online access to what is indisputably the most authoritative and historical dictionary of the English language. In addition, the editors have announced plans to use the online version for the first comprehensive revision of the twenty-volume work (in regular-size print, plus three supplemental volumes) since the completion of the first edition's publication in 1928. Quarterly updates of the dictionary will involve adding new words and updating all 250,000 of the entries in the current version. The online edition allows users to conduct word or phrase searches, including proximity searches, of the full text or selected portions, such as etymologies, quotations, definitions, etc. -- searches that are functionally difficult or impossible in the print edition. The Web version will also have such additional features as links to scholarship about the dictionary, a "Word of the Day," opportunities for readers to provide lexicographical input to the ongoing revision, and more. But this marvel doesn't come cheap. Individual subscriptions are $550 per year; institutions will be charged $795 per annum. A free tour of the dictionary is available for prospective buyers who wish to kick the tires. We suspect this will be a must-have for academic institutions and larger public libraries, but individuals without a large cache of discretionary funds will just have to keep squinting at that little print.

214

Computerized Physician Order Entry  

PubMed Central

Computerized physician order entry (CPOE) has been promoted as an important component of patient safety, quality improvement, and modernization of medical practice. In practice, however, CPOE affects health care delivery in complex ways, with benefits as well as risks. Every implementation of CPOE is associated with both generally recognized and unique local factors that can facilitate or confound its rollout, and neurohospitalists will often be at the forefront of such rollouts. In this article, we review the literature on CPOE, beginning with definitions and proceeding to comparisons to the standard of care. We then proceed to discuss clinical decision support systems, negative aspects of CPOE, and cultural context of CPOE implementation. Before concluding, we follow the experiences of a Chief Medical Information Officer and neurohospitalist who rolled out a CPOE system at his own health care organization and managed the resulting workflow changes and setbacks.

Khanna, Raman; Yen, Tony

2014-01-01

215

Online Learning  

ERIC Educational Resources Information Center

Distance education, which began as correspondence courses in the nineteenth century and grew into educational television during the twentieth century, evolved into learning on the Web by the mid-1990s. Accompanying the rise in online learning has been a similar rise in organizations and publications dedicated to serving the needs of online

Perry, Edward H.; Pilati, Michelle L.

2011-01-01

216

Reconstruction of the Genesis Entry  

NASA Technical Reports Server (NTRS)

This paper provides an overview of the findings from a reconstruction analysis of the Genesis capsule entry. First, a comparison of the atmospheric properties (density and winds) encountered during the entry to the pre-entry profile is presented. The analysis that was performed on the video footage (obtained from the tracking stations at UTTR) during the descent is then described from which the Mach number at the onset of the capsule tumble was estimated following the failure of the drogue parachute deployment. Next, an assessment of the Genesis capsule aerodynamics that was extracted from the video footage is discussed, followed by a description of the capsule hypersonic attitude that must have occurred during the entry based on examination of the recovered capsule heatshield. Lastly, the entry trajectory reconstruction that was performed is presented.

Desai, Prasun N.; Qualls, Garry D.; Schoenenberger, Mark

2005-01-01

217

Seeking health information online: does Wikipedia matter?  

PubMed

OBJECTIVE To determine the significance of the English Wikipedia as a source of online health information. DESIGN The authors measured Wikipedia's ranking on general Internet search engines by entering keywords from MedlinePlus, NHS Direct Online, and the National Organization of Rare Diseases as queries into search engine optimization software. We assessed whether article quality influenced this ranking. The authors tested whether traffic to Wikipedia coincided with epidemiological trends and news of emerging health concerns, and how it compares to MedlinePlus. MEASUREMENTS Cumulative incidence and average position of Wikipedia compared to other Web sites among the first 20 results on general Internet search engines (Google, Google UK, Yahoo, and MSN, and page view statistics for selected Wikipedia articles and MedlinePlus pages. RESULTS Wikipedia ranked among the first ten results in 71-85% of search engines and keywords tested. Wikipedia surpassed MedlinePlus and NHS Direct Online (except for queries from the latter on Google UK), and ranked higher with quality articles. Wikipedia ranked highest for rare diseases, although its incidence in several categories decreased. Page views increased parallel to the occurrence of 20 seasonal disorders and news of three emerging health concerns. Wikipedia articles were viewed more often than MedlinePlus Topic (p = 0.001) but for MedlinePlus Encyclopedia pages, the trend was not significant (p = 0.07-0.10). CONCLUSIONS Based on its search engine ranking and page view statistics, the English Wikipedia is a prominent source of online health information compared to the other online health information providers studied. PMID:19390105

Laurent, Michaël R; Vickers, Tim J

2009-01-01

218

Seeking Health Information Online: Does Wikipedia Matter?  

PubMed Central

Objective To determine the significance of the English Wikipedia as a source of online health information. Design The authors measured Wikipedia's ranking on general Internet search engines by entering keywords from MedlinePlus, NHS Direct Online, and the National Organization of Rare Diseases as queries into search engine optimization software. We assessed whether article quality influenced this ranking. The authors tested whether traffic to Wikipedia coincided with epidemiological trends and news of emerging health concerns, and how it compares to MedlinePlus. Measurements Cumulative incidence and average position of Wikipedia® compared to other Web sites among the first 20 results on general Internet search engines (Google®, Google UK®, Yahoo®, and MSN®), and page view statistics for selected Wikipedia articles and MedlinePlus pages. Results Wikipedia ranked among the first ten results in 71–85% of search engines and keywords tested. Wikipedia surpassed MedlinePlus and NHS Direct Online (except for queries from the latter on Google UK), and ranked higher with quality articles. Wikipedia ranked highest for rare diseases, although its incidence in several categories decreased. Page views increased parallel to the occurrence of 20 seasonal disorders and news of three emerging health concerns. Wikipedia articles were viewed more often than MedlinePlus Topic (p = 0.001) but for MedlinePlus Encyclopedia pages, the trend was not significant (p = 0.07–0.10). Conclusions Based on its search engine ranking and page view statistics, the English Wikipedia is a prominent source of online health information compared to the other online health information providers studied.

Laurent, Michael R.; Vickers, Tim J.

2009-01-01

219

19 CFR 122.42 - Aircraft entry.  

Code of Federal Regulations, 2011 CFR

...2014-04-01 2014-04-01 false Aircraft entry. 122.42 Section 122.42...TREASURY AIR COMMERCE REGULATIONS Aircraft Entry and Entry Documents; Electronic...Non-Crew Members Onboard Commercial Aircraft Arriving In, Continuing Within,...

2014-04-01

220

Histology Online  

NSDL National Science Digital Library

Histology-online is a web-based, interactive histology textbook and atlas. It includes a computerized microscope to examine tissues and organs and provides a new way to teach histology that is preferred by students.

2011-08-01

221

Learning Online  

NSDL National Science Digital Library

To improve large lecture courses, the authors designed a hybrid instructional format that couples online homework with in-class, active learning exercises. They assessed student perceptions of a pilot version this hybrid class, and most students felt that

Sibley, Duncan H.; Riffell, Samuel K.

2003-03-01

222

Optimization Online  

NSDL National Science Digital Library

Optimization Online is one of the best sources for current research papers and reports on the topic of optimization. This repository receives numerous submissions each month, and papers can be browsed by data added or category. In addition to searching for articles on the site, visitors can also subscribe to the Optimization Online monthly digest and receive updates on all of the new titles and reports submitted during that month.

2008-05-19

223

Halloween Online  

NSDL National Science Digital Library

The scariest night of the year is almost upon us, and this site will help users get into the proper "spirit." Halloween Online is simply put a massive Halloween resource, with decorating and costume tips; a guide to carving and displaying your pumpkins; a selection of featured articles and interviews; Halloween recipes; downloadable graphics ("Scream Savers") and music files; e-cards; online games; and a large collection of links, among other offerings.

224

[Mathematics, natural sciences and technology--parts of the encyclopedia Die Kultur der Gegenwart (The culture of today)].  

PubMed

The paper explores the trend of the early 20th century to consolidate mathematics, natural sciences, medicine and technology under the umbrella of one integrative culture--a tendency which contrasts with the increasing mainstream trend of separating the humanities from the natural sciences. The unifying umbrella was framed by the great encyclopedia Die Kultur der Gegenwart which was published by B. G. Teubner from 1905 to 1925 and was planned to run up to 62 volumes. We analyze the quantitative rate of the parts devoted to the humanities, the natural sciences and technology, respectively, the degree to which these parts were completed in this encyclopedia. In particular, we investigate the role of mathematicians and their reasons to find a classification for the mathematical, natural scientific and engineering parts of culture as well as their reasons, to win Nobel prize winners and other famous scientists to become co-editors and authors. We examine the published volumes in the fields of mathematics, chemistry, physics, astronomy and technology in order to show what type of publication--professional or popular--was intended. Furthermore, we illuminate how the educational reform of mathematics, natural sciences and technology of this period--which included a reform of girls' and women's education--was reflected in the encyclopedia Die Kultur der Gegenwart. PMID:19044041

Tobies, Renate

2008-03-01

225

Atmospheric maneuvering during Martian entry  

NASA Technical Reports Server (NTRS)

A comparative-advantages study is made of two different Martian atmospheric entry maneuvers, on the basis of calculation results for the case of a vehicle with a maximum L/D ratio of 2.3. Entries from a highly elliptical Martian orbit at 5 km/sec are more difficult than those from a lower altitude and speed orbit at 3.5 km/sec, due to their more stringent guidance requirements. Efforts to reduce the deceleration for the higher speed entry by lift-modulation achieved a 40-percent reduction, but at the cost of a 50-percent decrease in lateral range. The lower-speed entry's gliding trajectory is noted to encounter a far more benign atmospheric environment.

Tauber, Michael E.; Bowles, Jeffrey V.; Yang, Lily

1988-01-01

226

Re-entry Experiment Launch  

NASA Video Gallery

On August 10, 2009, NASA successfully launched the Inflatable Re-entry Vehicle Experiment (IRVE) and proved that spacecraft can use inflatable heat shields to reduce speed and provide protection du...

227

Orion Entry Handling Qualities Assessments  

NASA Technical Reports Server (NTRS)

The Orion Command Module (CM) is a capsule designed to bring crew back from the International Space Station (ISS), the moon and beyond. The atmospheric entry portion of the flight is deigned to be flown in autopilot mode for nominal situations. However, there exists the possibility for the crew to take over manual control in off-nominal situations. In these instances, the spacecraft must meet specific handling qualities criteria. To address these criteria two separate assessments of the Orion CM s entry Handling Qualities (HQ) were conducted at NASA s Johnson Space Center (JSC) using the Cooper-Harper scale (Cooper & Harper, 1969). These assessments were conducted in the summers of 2008 and 2010 using the Advanced NASA Technology Architecture for Exploration Studies (ANTARES) six degree of freedom, high fidelity Guidance, Navigation, and Control (GN&C) simulation. This paper will address the specifics of the handling qualities criteria, the vehicle configuration, the scenarios flown, the simulation background and setup, crew interfaces and displays, piloting techniques, ratings and crew comments, pre- and post-fight briefings, lessons learned and changes made to improve the overall system performance. The data collection tools, methods, data reduction and output reports will also be discussed. The objective of the 2008 entry HQ assessment was to evaluate the handling qualities of the CM during a lunar skip return. A lunar skip entry case was selected because it was considered the most demanding of all bank control scenarios. Even though skip entry is not planned to be flown manually, it was hypothesized that if a pilot could fly the harder skip entry case, then they could also fly a simpler loads managed or ballistic (constant bank rate command) entry scenario. In addition, with the evaluation set-up of multiple tasks within the entry case, handling qualities ratings collected in the evaluation could be used to assess other scenarios such as the constant bank angle maintenance case. The 2008 entry assessment was divided into two sections (see Figure 1). Entry I was the first, high speed portion of a lunar return and Entry II was the second, lower speed portion of a lunar return, which is similar (but not identical) to a typical ISS return.

Bihari, B.; Tiggers, M.; Strahan, A.; Gonzalez, R.; Sullivan, K.; Stephens, J. P.; Hart, J.; Law, H., III; Bilimoria, K.; Bailey, R.

2011-01-01

228

Online Glossary of Research Economics  

NSDL National Science Digital Library

Peter B. Meyer of the Economics Department at Northwestern University has created this searchable glossary of research economics terms. The glossary is meant to be used like a dictionary: users type in research terms they don't understand, and hopefully, the term will be among the Online Glossary of Research Economics's over 1,000 entries. Typing "help" into the search field will provide a list of relevant economics categories, each of which contains a directory of related terms; terms are also browseable by alphabetical order in the "downloadable contents" section. The How and Why of this Site section offers advice on how best to use the glossary, as well as explaining some of the internal structures. Meyer sees this project as a work-in-progress and invites users to suggest entries and offer feedback.

229

The Encyclopedia of Life v2: Providing Global Access to Knowledge About Life on Earth  

PubMed Central

Abstract The Encyclopedia of Life (EOL, http://eol.org) aims to provide unprecedented global access to a broad range of information about life on Earth. It currently contains 3.5 million distinct pages for taxa and provides content for 1.3 million of those pages. The content is primarily contributed by EOL content partners (providers) that have a more limited geographic, taxonomic or topical scope. EOL aggregates these data and automatically integrates them based on associated scientific names and other classification information. EOL also provides interfaces for curation and direct content addition. All materials in EOL are either in the public domain or licensed under a Creative Commons license. In addition to the web interface, EOL is also accessible through an Application Programming Interface. In this paper, we review recent developments added for Version 2 of the web site and subsequent releases through Version 2.2, which have made EOL more engaging, personal, accessible and internationalizable. We outline the core features and technical architecture of the system. We summarize milestones achieved so far by EOL to present results of the current system implementation and establish benchmarks upon which to judge future improvements. We have shown that it is possible to successfully integrate large amounts of descriptive biodiversity data from diverse sources into a robust, standards-based, dynamic, and scalable infrastructure. Increasing global participation and the emergence of EOL-powered applications demonstrate that EOL is becoming a significant resource for anyone interested in biological diversity.

2014-01-01

230

Complex Networks in Different Languages: A Study of an Emergent Multilingual Encyclopedia  

NASA Astrophysics Data System (ADS)

There is an increasing interest to the study of complex networks in an interdisciplinary way. Language, as a complex network, has been a part of this study due to its importance in human life. Moreover, the Internet has also been at the center of this study by making access to large amounts of information possible. With these ideas in mind, this work aims to evaluate conceptual networks in different languages with the data from a large and open source of information in the Internet, namely Wikipedia. As an evolving multilingual encyclopedia that can be edited by any Internet user, Wikipedia is a good example of an emergent complex system. In this paper, different from previous work on conceptual networks which usually concentrated on single languages, we concentrate on possible ways to compare the usages of different languages and possibly the underlying cultures. This also involves the analysis of local network properties around certain coneepts in different languages. For an initial evaluation, the concept "family" is used to compare the English and German Wikipedias. Although, the work is currently at the beginning, the results are promising.

Pembe, F. Canan; Bingol, Haluk

231

Hoover's Online  

NSDL National Science Digital Library

Hoover's Online features an accurate and comprehensive database of company information free on the Web. Called Hoover's MasterList Plus, the database of more than 8,500 of the largest public and private U.S. companies provides company name, key personnel, address, sales, number of employees, ticker symbol and other information for companies meeting the user's designated search criteria. Hoover's Online also includes the week's top business news stories, a directory of more than 1,000 corporate Web sites, a synopsis of the 25 top-selling business books and links to other business information resources on the Web, including stock quotes and SEC filings. The new List of Lists has dozens of rankings indicating which companies are the largest, which CEOs made the most money, which companies are the best employers, and more. Almost all of Hoover's Online is free, including the content mentioned here.

1998-01-01

232

Conservation Online  

NSDL National Science Digital Library

Started as a germ of an idea back in 1987 (on a real, live bulletin board, as opposed to an electronic one), Conservation Online (CoOL) has been providing online resources for conservation professionals since 1993. As its website announces, it is a "full text library of conservation information," covering a wide array of topics ranging from digital imaging to reprographics, and quite a bit of material in between. By clicking on any given topic, visitors will receive a brief overview of the subject, its terminology, and then a list of general online resources for consideration. Another nice feature of the site is the mailing list archive, which contain the archives of various queries submitted to different professional conservation groups, such as the Association of Moving Image Archivists, the Textiles Conservation Discussion List, and the Conservation Framer's Mailing List. The site is rounded out by a timeline that traces the CoOL's history from the summer of 1987 to July 2003.

233

Preservation Online  

NSDL National Science Digital Library

The National Trust for Historic Preservation has received a number of awards for its magazine, Preservation, and their online version is well worth a look. The site is quite nice, and it contains brief profiles of current preservation stories written especially for this website. Recent stories have included profiles of neon signs in Los Angeles, brewery renovations in Milwaukee, and a list of the ten most endangered Civil War battlefields. The site is rounded out by an online archive which allows visitors to search back issues from 1992 to 2006.

234

Religion Online  

NSDL National Science Digital Library

Religion Online is an extensive digital library of over 250 book chapters, monographs, speeches, and articles on the socio-cultural aspects of Christianity. The texts, written by religious scholars, are arranged into twenty subject sections, such as Church and Society, Church History, Comparative Religion, and Sociology of Religion, among many others. Each section contains an annotated list of titles linking users to the full-text. All texts in the collection reside at the site. An author index provides users with an alternative method for document retrieval. Religion Online is compiled by William F. Fore, a retired professor of theology, communications, and cultural studies.

235

The Handbook of Texas Online  

NSDL National Science Digital Library

Sponsored by the Texas State Historical Society, this online guide to Texas is an excellent resource for students looking for information about the Lone Star state. The casual browser may want to look in the Browse section, which is divided into place names; "what" (covering many subjects, such as business and education); "who;" and "when." The Handbook also contains many images, which can be immediately located by going to the Multimedia section, which lists them all alphabetically. The Handbook can also be searched in its entirety, although most of the entries can be found quickly through the Browse section. For those persons looking to purchase a hard copy of the Handbook, information is available on the site. There is also an online form where visitors can make article revision suggestions, or suggest new article topics to be covered in future editions.

2003-01-01

236

MoMA Online Projects  

NSDL National Science Digital Library

The Museum of Modern Art presents this listing of online projects. Two featured sites are Stir-Fry and InterNyet, by Associate Curator of Film and Video, Barbara London. Like the musicologists of the 1930s, who set off to discover and record blues and folk music in the rural American south, London travelled to China in 1997 and Russia in 1998, sending back these "dispatches" on the local arts scenes. She embarked on these journeys equipped with a laptop computer, Hi-8 video camera, digital still camera, and cassette tape recorder. Stir-Fry and Internyet are online scrapbooks, chronicling her experiences via written journal entries, still photographs of artists and their work, and audio and video clips. Also included are a time capsule made for the tenth anniversary of World AIDS Day, Peter Halley's Exploding Cell, and Technology in the 1990s, an ongoing series of symposia that explore the promise and impact of new technologies on contemporary culture.

237

Mars Science Laboratory Entry Guidance  

NASA Technical Reports Server (NTRS)

The Mars Science Laboratory will be the first Mars mission to attempt a guided entry with the objective of safely delivering the entry vehicle to a survivable parachute deploy state within 12.5 km of the pre-designated parachute deploy coordinates. The Entry Terminal Point Controller guidance algorithm is derived from the final phase Apollo Command Module guidance and, like Apollo, modulates the bank angle to control range based on deviations in range, altitude rate, and drag acceleration from a reference trajectory. For application to Mars landers which must make use of the tenuous Martian atmosphere, it is critical to balance the lift of the vehicle to minimize the range while still ensuring a safe deploy altitude. An overview of the process to generate optimized guidance settings is presented, discussing improvements made over the last nine years. Performance tradeoffs between ellipse size and deploy altitude will be presented, along with imposed constraints of entry acceleration and heating. Performance sensitivities to the bank reversal deadbands, heading alignment, attitude initialization error, and entry delivery errors are presented.

Mendeck, Gavin F.

2011-01-01

238

Reconstruction of the Genesis Entry  

NASA Technical Reports Server (NTRS)

An overview of the reconstruction analyses performed for the Genesis capsule entry is described. The results indicate that the actual entry prior to the drogue deployment failure was very close to the pre-entry predictions. The capsule landed 8.3 km south of the desired target at Utah Test and Training Range. Analysis on infrared video footage (obtained from the tracking stations) during the descent estimated the onset of the capsule tumble at Mach 0.9. Frequency analysis on the infrared video data indicates that the aerodynamics generated for the Genesis capsule reasonably predicted the drag and static stability. Observations of the heatshield support the pre-entry simulation estimates of a small hypersonic angles-of-attack, since there is very little, if any, charring of the shoulder region or the aftbody. Through this investigation, an overall assertion can be made that all the data gathered from the Genesis entry is consistent with flight performance that was close to the nominal preentry prediction. Consequently, the design principles and methodologies utilized for the flight dynamics, aerodynamics, and aerothermodynamics analyses have been corroborated.

Desai, Prasun N.; Qualls, Garry D.; Schoenenberger, Mark

2007-01-01

239

Austria from A to Z  

NSDL National Science Digital Library

Part of a broader online encyclopedia project that deals with various aspects of Austrian culture, history, and music, the Austria from A to Z Web site covers topics ranging from A (the international abbreviation for Austria) to Otto Zykan, the noted modernist composer and pianist. The Osterreich Lexicon Encyclopedia forms the basis for this online encyclopedia, which was created by Richard and Maria Bamberger in collaboration with Franz Maier-Bruck. The project was translated into English by the staff of the School of Translating and Interpreting of the University of Vienna. The site also features a lengthy user guide and an extended bibliography divided into thematic areas, such as ecclesiastical history, art, and natural history. Users of the online encyclopedia can search by keyword, or just browse through entries by letter. Many of the entries contain illustrations and links to related material contained within other archives online here, like the Austrian music album and the video album.

240

Anglicans Online!  

NSDL National Science Digital Library

Anglicans Online! has grown to be a comprehensive source of information for the world's Episcopal/Anglican church on the Internet. Topics offered are the Newsroom, Canada, USA, World, and Resources including reference links, biblical study. Ecumenical partners, and a listing of Discussion mailing lists and newsgroups are also provided.

241

Biology Online  

NSDL National Science Digital Library

Biology Online provides a dictionary of biological terms, tutorials, and biology-related links categorized into dozens of subfields. The tutorials cover the following topics: adaptation, cell biology, developmental biology, freshwater ecology, genetics and evolution, neurology, regulation in biological systems, and the origin and evolution of life.

Lees, Richard

242

Online 1990.  

ERIC Educational Resources Information Center

This paper examines the co-existence of online and CD-ROM technologies in terms of their existing pricing structures, marketing strategies, functionality, and future roles. "Fixed Price Unlimited Usage" (FPUU) pricing and flat-rate pricing are discussed as viable alternatives to current pricing practices. In addition, it is argued that the…

Goldstein, Morris

243

HIV: cell binding and entry.  

PubMed

The first step of the human immunodeficiency virus (HIV) replication cycle-binding and entry into the host cell-plays a major role in determining viral tropism and the ability of HIV to degrade the human immune system. HIV uses a complex series of steps to deliver its genome into the host cell cytoplasm while simultaneously evading the host immune response. To infect cells, the HIV protein envelope (Env) binds to the primary cellular receptor CD4 and then to a cellular coreceptor. This sequential binding triggers fusion of the viral and host cell membranes, initiating infection. Revealing the mechanism of HIV entry has profound implications for viral tropism, transmission, pathogenesis, and therapeutic intervention. Here, we provide an overview into the mechanism of HIV entry, provide historical context to key discoveries, discuss recent advances, and speculate on future directions in the field. PMID:22908191

Wilen, Craig B; Tilton, John C; Doms, Robert W

2012-01-01

244

HIV: Cell Binding and Entry  

PubMed Central

The first step of the human immunodeficiency virus (HIV) replication cycle—binding and entry into the host cell—plays a major role in determining viral tropism and the ability of HIV to degrade the human immune system. HIV uses a complex series of steps to deliver its genome into the host cell cytoplasm while simultaneously evading the host immune response. To infect cells, the HIV protein envelope (Env) binds to the primary cellular receptor CD4 and then to a cellular coreceptor. This sequential binding triggers fusion of the viral and host cell membranes, initiating infection. Revealing the mechanism of HIV entry has profound implications for viral tropism, transmission, pathogenesis, and therapeutic intervention. Here, we provide an overview into the mechanism of HIV entry, provide historical context to key discoveries, discuss recent advances, and speculate on future directions in the field.

Wilen, Craig B.; Tilton, John C.; Doms, Robert W.

2012-01-01

245

Teaching Creative Writing Online  

Microsoft Academic Search

This paper discusses experiences of teaching a Masters degree in Creative Writing online with WebCT Software. Discussion is set out as follows: course structure, how the course runs online, initial concerns when adapting the course to run online, Salmon's five-stage model for teaching and learning online, disadvantages of teaching online and advantages of teaching online. The paper concludes with further

Heather Beck

2004-01-01

246

MSL EDL Entry Guidance using the Entry Terminal Point Controller  

NASA Technical Reports Server (NTRS)

The Mars Science Laboratory will be the first Mars mission to attempt a guided entry with the objective of safely delivering the entry vehicle to a survivable parachute deploy state within 10 km of the pre-designated landing site. The Entry Terminal Point Controller guidance algorithm is derived from the final phase Apollo Command Module guidance and, like Apollo, modulates the bank angle to control range based on deviations in range, altitude rate, and drag acceleration from a reference trajectory. For application to Mars landers which must make use of the tenuous Martian atmosphere, it is critical to balance the lift of the vehicle to minimize the range while still ensuring a safe deploy altitude. An overview of the process to generate optimized guidance settings is presented, discussing improvements made over the last four years. Performance tradeoffs between ellipse size and deploy altitude will be presented, along with imposed constraints of entry acceleration and heating. Performance sensitivities to the bank reversal deadbands, heading alignment, attitude initialization error, and atmospheric delivery errors are presented. Guidance settings for contingency operations, such as those appropriate for severe dust storm scenarios, are evaluated.

2006-01-01

247

Online Training for Searching Online.  

National Technical Information Service (NTIS)

This paper focuses on the casual user's needs and problems in learning to search online retrieval systems. Such users are inclined to infrequent use, and are unlikely to have much interest or knowledge about the complexities of the system. The TRAINER pro...

E. Caruso

1978-01-01

248

Equilibrium in Auctions with Entry  

Microsoft Academic Search

The authors model entry incentives in auctions with risk-neutral bidders and characterize a symmetric equilibrium in which the number of entrants is stochastic. The presence of too many potential bidders raises coordination costs that detract from welfare. The authors show that the seller and society can benefit from policies that reduce market thickness (i.e., the relative abundance of buyers). Their

Dan Levin; James L. Smith

1994-01-01

249

Numerical Skip-Entry Guidance  

NASA Technical Reports Server (NTRS)

This paper assesses a preliminary guidance and targeting strategy for accomplishing Skip-Entry (SE) flight during a lunar return-capsule entry flight. One of the primary benefits of flying a SE trajectory is to provide the crew with continuous Continental United States (CONUS) landing site access throughout the lunar month. Without a SE capability, the capsule must land either in water or at one of several distributed land sites in the Southern Hemisphere for a significant portion of a lunar month using a landing and recovery scenario similar to that employed during the Apollo program. With a SE trajectory, the capsule can land either in water at a site in proximity to CONUS or at one of several distributed landing sites within CONUS, thereby simplifying the operational requirements for crew retrieval and vehicle recovery, and possibly enabling a high degree of vehicle reusability. Note that a SE capability does not require that the vehicle land on land. A SE capability enables a longer-range flight than a direct-entry flight, which permits the vehicle to land at a much greater distance from the Entry Interface (EI) point. This does not exclude using this approach to push the landing point to a water location in proximity of CONUS and utilizing water or airborne recovery forces.

Tigges, Michael; Crull, Timothy; Rea, Jeremy; Johnson, Wyatt

2006-01-01

250

Port of Entry: Water Quality  

NSDL National Science Digital Library

Port of Entry is a bilingual (Spanish and English) business network for the environmental sector. Its objective is to promote innovation in environmental policies and technologies through professional exchange. The water quality section of the site contains technical articles, news releases, regulatory information, case studies, and industry developments.

Inc., Port O.

251

Poxvirus entry and membrane fusion  

SciTech Connect

The study of poxvirus entry and membrane fusion has been invigorated by new biochemical and microscopic findings that lead to the following conclusions: (1) the surface of the mature virion (MV), whether isolated from an infected cell or by disruption of the membrane wrapper of an extracellular virion, is comprised of a single lipid membrane embedded with non-glycosylated viral proteins; (2) the MV membrane fuses with the cell membrane, allowing the core to enter the cytoplasm and initiate gene expression; (3) fusion is mediated by a newly recognized group of viral protein components of the MV membrane, which are conserved in all members of the poxvirus family; (4) the latter MV entry/fusion proteins are required for cell to cell spread necessitating the disruption of the membrane wrapper of extracellular virions prior to fusion; and furthermore (5) the same group of MV entry/fusion proteins are required for virus-induced cell-cell fusion. Future research priorities include delineation of the roles of individual entry/fusion proteins and identification of cell receptors.

Moss, Bernard [Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892-0445 (United States)]. E-mail: bmoss@nih.gov

2006-01-05

252

Marketing Mix Reactions to Entry  

Microsoft Academic Search

Initial product, distribution, marketing expenditure, and price reactions by incumbents are examined for 115 entrants into oligopolistic markets. The most common reaction pattern is either no reaction or only a single reaction. It is very unusual for entrants to face reactions across the entire marketing mix. Reactions in the first two years after entry are explained as a function of

William T. Robinson

1988-01-01

253

Water entry of spinning spheres  

Microsoft Academic Search

The complex hydrodynamics of water entry by a spinning sphere are investigated experimentally for low Froude numbers. Standard billiard balls are shot down at the free surface with controlled spin around one horizontal axis. High-speed digital video sequences reveal unique hydrodynamic phenomena which vary with spin rate and impact velocity. As anticipated, the spinning motion induces a lift force on

TADD T. T RUSCOTT; ALEXANDRA H. T ECHET

2009-01-01

254

The Army's Delayed Entry Program  

Microsoft Academic Search

The Delayed Entry Program, which allows individuals to delay reporting for active duty up to 12 months after signing enlistment contracts, is a valuable management tool used by the U.S. Army Recruiting Command and other U.S. military recruiting organizations. Attrition from this program increases recruiting costs and reduces training efficiency. DEP attrition is analyzed here using microdata for individuals who

Cyril E. Kearl; Abraham Nelson

1992-01-01

255

Entry Complications in Laparoscopic Surgery  

PubMed Central

To review the complications associated with laparoscopic surgery and provide clinical direction regarding the best practice based on the best available evidence. The laparoscopic entry techniques and technologies reviewed include the classic pneumoperitoneum (Veress/trocar), the open (Hasson), the direct trocar insertion, the use of disposable shielded trocars, radially expanding trocars and visual entry systems. Medline, Pubmed and Cochrane Databases were searched for English language articles published before December 2008. It is an evidence based fact that minimal access surgery is superior to conventional open surgery since this is beneficial to the women, community and the healthcare system.Over the past 50 years, many techniques, technologies and guidelines have been introduced to eliminate the risks associated with laparoscopic entry. No single technique or instrument has been proved to eliminate laparoscopic entry associated injury. Proper evaluation of the women, supported by surgical skills and good knowledge of the technology and instrumentation is the keystone to safe access and prevention of complications during laparoscopic surgery.

Krishnakumar, S; Tambe, P

2009-01-01

256

Planetary Landers and Entry Probes  

NASA Astrophysics Data System (ADS)

Preface; Acknowledgements; Part I. Engineering Issues Specific to Entry Probes, Landers or Penetrators: 1. Mission goals and system engineering; 2. Accommodation, launch, cruise and arrival from orbit or interplanetary trajectory; 3. Entering atmospheres; 4. Descent through an atmosphere; 5. Descent to an airless body; 6. Planetary balloons, aircraft, submarines and cryobots; 7. Arrival at a surface; 8. Thermal control of landers and entry probes; 9. Power systems; 10. Communication and tracking of entry probes; 11. Radiation environment; 12. Surface activities: arms, drills, moles and mobility; 13. Structures; 14. Contamination of spacecraft and planets; Part II. Previous Atmosphere/Surface Vehicles and Their Payloads: 15. Destructive impact probes; 16. Atmospheric entry probes; 17. Pod landers; 18. Legged landers; 19. Payload delivery penetrators; 20. Small body surface missions; Part III. 'Case Studies': 21. Surveyor landers; 22. Galileo probe; 23. Huygens; 24. Mars Pathfinder and Sojourner; 25. Deep Space 2 Mars microprobes; 26. Rosetta lander Philae; 27. Mars exploration rovers: Spirit and Opportunity; Appendix: Some key parameters for bodies in the Solar System; List of acronyms; Bibliography; References; Index.

Ball, Andrew; Garry, James; Lorenz, Ralph; Kerzhanovich, Viktor

2010-02-01

257

A Martian entry propagation study  

Microsoft Academic Search

The interaction of an electromagnetic wave with the shock-induced plasma flow field generated around a blunt body capsule as it encounters the planetary atmosphere of Mars is examined. From two preliminary engineering models of the Martian atmosphere and the estimated entry-trajectory characteristics of the capsule, it appears that the communication links to and from the capsule may be blacked out

John D. Nordgard

1976-01-01

258

SPANISH COMPANY FOREIGN MARKET ENTRY  

Microsoft Academic Search

The aim of this paper is to analyse the determinants of diversification mode (acquisition versus greenfield) through foreign direct investment considering various theories, such as those of mergers and acquisitions, transaction costs, the learning organisation, the institutional context of the company and the cultural environment of the host country, and to analyse the determinants of entry mode combining diversification mode

Francisco J. Más; Felipe Ruiz Moreno

2003-01-01

259

ISSN Online  

NSDL National Science Digital Library

The ISSN (International Standard Serial Number) is the internationally recognized unique numeric identifier for serial publications in any format. To date, the ISSN network, coordinated by the ISSN International Centre in Paris, has registered and assigned ISSNs for more than 900,000 serials, with approximately 4,000 new ISSNs added to the ISSN Register each month. Recently, this register has been made accessible through the Web at ISSN Online. ISSN Online is a subscription service, but it is available for free on a 30-day trial basis. Trial users must register an email address to obtain a temporary password. Then they may conduct 40 queries, view 400 records, and download 10 records during the test period.

260

KFOR Online  

NSDL National Science Digital Library

This site is the official online presence of KFOR, the NATO-led international force responsible for establishing security in Kosovo. At the KFOR site, users can read the latest (and archived) news from Kosovo and the KFOR Chronicle; learn about KFOR's structure and objectives; read detailed background information, biographies, and original documents; and access audio and video selections and a searchable database of photographs in the Multimedia Gallery. Additional resources include press/ media information, related links, and an internal search engine.

1999-01-01

261

Physiology Online  

NSDL National Science Digital Library

Physiology Online, the electronic information service of the Physiological Society, provides information about its three journals: Journal of Physiology, Proceedings of the Physiological Society, and Experimental Physiology. Also included are selected abstracts, as well as information about recent monographs, job listings (mostly in the U.K.), information about Society grants, a physiology file and software archive for both PC and Mac platforms, pointers to other physiology resources on the Internet, and a listing of upcoming meetings and conferences within the field.

1994-01-01

262

Writers Online  

NSDL National Science Digital Library

As part of the National Year of Reading effort in the UK (spearheaded by the National Literacy Trust to promote reading and literacy), Writers Online is aimed at piquing younger readers' interests. The site features interviews with popular children's writers as well as "writer-in-residence" workshops. Visitors to the site can try their hand at creative writing, learn tricks of the trade, and get personal feedback from their favorite authors.

1998-01-01

263

Outside Online  

NSDL National Science Digital Library

Outside Online is one of the premier outdoors oriented sites on the Web, covering fitness, biking, hiking, water sports, snow sports, travel, and mountaineering, among others. The site contains news and views, a travel section, reviews of outdoor products, coverage of outdoor activities such as the Tour DuPont, the World Cup Whitewater Slalom and skiing in South America, and selected full text, as well as special buyer's and family vacation guides from "Outside Magazine."

1996-01-01

264

The StarDate Black Hole Encyclopedia Website blackholes.stardate.org  

NASA Astrophysics Data System (ADS)

The StarDate Black Hole Encyclopedia website was developed over the past seven years to provide an extensive but easy-to-read resource for the public and students. A Spanish-language version, Enciclopedia de agujeros negros, is also available at blackholes.radiouniverso.org. Evaluation shows that the sites are used by the public, students, and astronomy professionals, and the site is among the top references in most web searches for individual black holes. The site comprises seven major subsections: Basics, Directory, Research, History, Pop Culture, News, and Resources. The Basics section introduces black holes, explains how they are discovered and studied, and covers their basis in the theory of gravity. This section also includes a six-minute video introduction, “Black Holes: Stranger than Fiction.” The Directory section contains extensive descriptions of more than 80 well-known stellar, intermediate, and supermassive black holes as well as images and vital statistics of each. The Research section takes a look at three NSF-funded projects, including the work of Andrea Ghez, Karl Gebhardt and Jenny Greene, and the LIGO project. The History section provides a timeline of black holes from Isaac Newton to the present. Some of the best and worst roles played by black holes in films, TV shows, and books are included in the Pop Culture section (and pop culture references and images are sprinkled through the rest of the site). An archive of news reports about black holes is available in the News section, which provides links to the original stories or press releases. And the Resources section offers FAQs, articles from StarDate magazine and radio programs, activities for students that are tied to national standards, a glossary, and a reading list of books and websites. We have conducted both quantitative and qualitative evaluation on the black hole websites. This material is based upon work supported by the National Science Foundation under Grant No. 0935841. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

Gebhardt, Karl; Benningfield, D.; Preston, S.

2013-01-01

265

On-Line Purchasing/Accounts Payable at the University of Michigan.  

ERIC Educational Resources Information Center

An integrated data base system providing online services to purchasing and accounts payable, which was implemented at the University of Michigan, is described. The system was designed to use online IMS transactions for data entry and inquiry and IMS batch reporting programs. With the implementation of the system, departmental and vendor inquiries…

Russell, Robert E.; Block, Roxana L.

266

Teaching Composition to Re-Entry Students  

ERIC Educational Resources Information Center

Describes the Women's Re-Entry Program at Diablo Valley College which uses structured teaching methods to alleviate the two principal weaknesses found in English compositions written by re-entry women, vagueness and lack of organization. (TP)

Foulkes, Natalie; Taines, Beatrice

1978-01-01

267

46 CFR 169.841 - Logbook entries.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 2013-10-01 false Logbook entries. 169.841 Section 169.841 Shipping COAST GUARD, DEPARTMENT OF HOMELAND... Operations Tests, Drills, and Inspections § 169.841 Logbook entries. (a) Each vessel...

2013-10-01

268

19 CFR 141.4 - Entry required.  

Code of Federal Regulations, 2013 CFR

...HOMELAND SECURITY; DEPARTMENT OF THE TREASURY (CONTINUED) ENTRY OF MERCHANDISE Liability for Duties and Requirement To Enter Merchandise § 141.4 Entry required. (a) General. All merchandise imported into the United States is...

2013-04-01

269

Sherpa moving mass entry descent landing system  

NASA Technical Reports Server (NTRS)

We describe Sherpa - a Strap-on High-altitude Entry Reconnaissance and Precision Aeromaneuver system that utilizes a moving mass system within an entry capsule to land a spacecraft precisely onto the surface of Mars.

Balaram, J.

2005-01-01

270

Peak atmospheric entry temperature of micrometeorites  

NASA Astrophysics Data System (ADS)

We present numerical calculations of the peak temperatures experienced by micrometeorites during atmospheric entry. Results are given for particle diameters between 2 and 50 micrometers and for entry velocities between 10 and 25 km/s. A material density of 2 g/cu cm and an entry angle of 45 deg are used for the calculation, but the results presented here can be easily re-interpreted for other densities and for vertical entry.

Love, S. G.; Brownlee, D. E.

1994-01-01

271

Online organic chemistry  

Microsoft Academic Search

This is a comprehensive study of the many facets of an entirely online organic chemistry course. Online homework with structure-drawing capabilities was found to be more effective than written homework. Online lecture was found to be just as effective as in-person lecture, and students prefer an online lecture format with shorter Webcasts. Online office hours were found to be effective,

Philip A. Janowicz

2010-01-01

272

Online Organic Chemistry  

ERIC Educational Resources Information Center

This is a comprehensive study of the many facets of an entirely online organic chemistry course. Online homework with structure-drawing capabilities was found to be more effective than written homework. Online lecture was found to be just as effective as in-person lecture, and students prefer an online lecture format with shorter Webcasts. Online

Janowicz, Philip A.

2010-01-01

273

Are patents strategic barriers to entry?  

Microsoft Academic Search

Patent protection restricts entry rather than preventing it. In case of a process innovation, it forces a potential entrant to sufficiently differentiate his production technology. We investigate whether a patentholder threatened by entry can strategically renew her patent. For low demand, the patent renewal is sufficient to deter entry, whereas a high demand attracts competitor, even if there is a

Corinne Langinier

2004-01-01

274

Flavivirus Entry Receptors: An Update  

PubMed Central

Flaviviruses enter host cells by endocytosis initiated when the virus particles interact with cell surface receptors. The current model suggests that flaviviruses use at least two different sets of molecules for infectious entry: attachment factors that concentrate and/or recruit viruses on the cell surface and primary receptor(s) that bind to virions and direct them to the endocytic pathway. Here, we present the currently available knowledge regarding the flavivirus receptors described so far with specific attention to C-type lectin receptors and the phosphatidylserine receptors, T-cell immunoglobulin and mucin domain (TIM) and TYRO3, AXL and MER (TAM). Their role in flavivirus attachment and entry as well as their implication in the virus biology will be discussed in depth.

Perera-Lecoin, Manuel; Meertens, Laurent; Carnec, Xavier; Amara, Ali

2013-01-01

275

Kidsource Online  

NSDL National Science Digital Library

Kidsource Online is an extensive collection of information about raising children from newborns to adolescents. A sampling of the publications they've pulled together at the site includes "Children and Bilingualism" from the American Speech-Language-Hearing Association; "Testing Your Child's Hearing" by Carol Knightly, Pediatric Audiologist; and the Asthma and Allergy Foundation of America (AAFA) Provides Tips to Help Parents and Kids Cope with Allergy Season. Resources are organized under top-level categories of Newborns, Toddlers, Preschoolers, K-12, Education, Health, Recreation, Forums, Organizations, and Guide to Best Software, among others.

1997-01-01

276

Workforce Online  

NSDL National Science Digital Library

Workforce Online is a Webzine that focuses on human resource issues and concepts. The site includes weekly articles, daily tips, and advice, as well as networking opportunities, polls, and case studies. Free registration is required to use the research section, which features a database of HR-related materials, searchable by keyword and topic. The site also includes solid information on legal issues and analysis, basic HR information in the HR 101 section, and a community center of networks and forums on assorted topics. Interested parties may subscribe to a free e-newsletter with site updates and more.

2007-05-29

277

Online Conversion  

NSDL National Science Digital Library

Need to convert joules to kilocalories? A rood to a square mile? 100 weight to stones? How about your age in dog years? You can do all of these conversions and over 8,000 more at Online Conversion. Conversions are organized by type (temperature, length, cooking, etc.), and each conversion page includes numerous options. Quick links to other conversions are also provided on each page so users don't have to return to the main page. Simply put, a very handy and easy-to-use site that belongs in the reference section of any user's bookmarks.

278

Maths Online  

NSDL National Science Digital Library

Maths Online is a site operated at the University of Vienna in Austria. Its purpose is to provide an interactive multimedia learning environment for high school and college level mathematics students and teachers. Its main section is the Gallery. Here, users can choose from a large selection of over twenty topics; each one has Java applets or other activities that demonstrate the associated principles. Interactive tests are also given that cover areas such as sets, functions, limiting processes, differentiation, and integration. The material presented on this site can be downloaded for offline use.

279

Online Writery  

NSDL National Science Digital Library

The Online Writery at the University of Missouri, Columbia, is a student-oriented writing and learning environment that includes both communication and information resources: e-mail, access to two MOOs , writing resources, teaching resources, and paperless papers. It is a place to write and read and talk, a place to learn stuff. It is a resource you can use whether you are writing for a class or not. These pages are made of the stuff writers (of any kind) need: information about writing, and opportunities to talk with other writers.

280

ADA Online  

NSDL National Science Digital Library

ADA Online, from the American Dental Association (ADA), includes resources for professionals, patients, and students. The site contains membership information, ADA publications and position papers, research and recommendations on clinical issues, a catalog of handouts and posters for patient education, information for new dentists, factsheets on dental careers, licensing information, directories of accredited education programs, listings of continuing education courses, and more. The section for patients and consumers includes answers to frequently asked questions; information on oral health, disease prevention, and how to deal with dental emergencies; and special sections for parents, children, and teens. A small portion of the site is for ADA members only.

1998-01-01

281

Highly constrained entry trajectory generation  

NASA Astrophysics Data System (ADS)

An entry trajectory planning algorithm that generates flyable trajectories satisfying waypoints, no-fly zones, and other path and terminal constraints is presented. The algorithm tactically divides the entry trajectory into the initial and glide phases. In the initial phase, a nominal angle of attack and a constant bank angle are used to generate the 3-D trajectory. In the glide phase, a planner is developed based on the evolved acceleration guidance logic for entry (EAGLE). The planner is divided into a longitudinal sub-planner and a lateral sub-planner. For longitudinal planning, the drag-energy profile is represented as five piecewise linear functions of the normalized non-conventional energy to make it consistent with both the desired trajectory length and the lateral maneuverability required to meet waypoint and no-fly zone constraints. The longitudinal sub-planner determines the magnitude of the bank angle, whereas the lateral sub-planner determines the appropriate sign of the bank angle for passing waypoints, avoiding no-fly zones, and minimizing the final heading error. The longitudinal and lateral sub-planners are iteratively employed until all path and terminal constraints are satisfied. Then, a tracker is employed to follow both the reference drag acceleration and the heading angle profiles to generate a feasible closed-loop entry trajectory. The approach is tested using the Common Aero Vehicle model. Simulations demonstrate that the generated trajectories can pass the predetermined waypoints, avoid no-fly zones, and achieve the desired target conditions within allowable tolerances.

Xie, Yu; Liu, Luhua; Tang, Guojian; Zheng, Wei

2013-07-01

282

Cambridge History of English and American Literature: An Encyclopedia in Eighteen Volumes  

NSDL National Science Digital Library

This week, Bartleby.com (last reviewed in the December 10, 1999 Scout Report) announced the online publication of all eighteen volumes of the classic Cambridge History of English and American Literature. This excellent free resource "comprises the largest public reference work of literary criticism and history on the Internet." Originally published in 1907-1921, the volumes include 303 chapters and more than 11,000 pages, edited and written by a worldwide panel of 171 leading scholars and thinkers of the early twentieth century. The online version features over 5,600 files, searchable by keyword and browseable by volume, chapter, and section. The electronic Cambridge History also includes chapter and bibliography indexes. Although a bit dated in parts, these eighteen volumes are a valuable, and now easily accessible, research tool for secondary and university students.

283

Fragmentation and ablation during entry  

SciTech Connect

This note discusses objects that both fragment and ablate during entry, using the results of previous reports to describe the velocity, pressure, and fragmentation of entering objects. It shows that the mechanisms used there to describe the breakup of non-ablating objects during deceleration remain valid for most ablating objects. It treats coupled fragmentation and ablation during entry, building on earlier models that separately discuss the entry of objects that are hard, whose high heat of ablation permits little erosion, and those who are strong whose strength prevents fragmentation, which are discussed in ``Radiation from Hard Objects,`` ``Deceleration and Radiation of Strong, Hard, Asteroids During Atmospheric Impact,`` and ``Meteor Signature Interpretation.`` This note provides a more detailed treatment of the further breakup and separation of fragments during descent. It replaces the constraint on mass per unit area used earlier to determine the altitude and magnitude of peak power radiation with a detailed analytic solution of deceleration. Model predictions are shown to be in agreement with the key features of numerical calculations of deceleration. The model equations are solved for the altitudes of maximum radiation, which agree with numerical integrations. The model is inverted analytically to infer object size and speed from measurements of peak power and altitude to provide a complete model for the approximate inversion of meteor data.

Canavan, G.H.

1997-09-01

284

British History Online  

NSDL National Science Digital Library

British history to some might be thought of as a dense thicket of county records, complex lineages, and other such foibles that make the story of these modestly-sized islands all the more delectable. Fortunately for those interested in these âÂÂhistoriesâÂÂ, there is the British History Online website. Created by the Institute of Historical Research and the History of Parliament Trust, the site contains a rather staggering array of material, ranging from the journals of the House of Commons to ordnance survey maps from across the nation. Apart from browsing through these resources, visitors can also utilize a series of tabs running across the top of the homepage that compartmentalize the materials here into such categories as places and subjects. Some of the subject headings include agriculture history, historical geography, and social history. One additional nice feature is the âÂÂRecent Journal Entriesâ section, where visitors can learn about recent and upcoming additions to the already impressive selection of primary historical resources offered here.

285

Online Population and Environment Linkages Service  

NSDL National Science Digital Library

The National Council for Science and the Environment (NCSE) offers this centralized resource for online "books, reports, journal articles, newspaper articles, news analysis, maps, conference papers, datasets, slide shows, organizations, regional overviews, laws, bills, and court decisions, and much more from around the world ... from the simple to the technical." Because the selection process for online materials is not limited to "academic standards," documents cover a wide area, from government reports (e.g., Congressional Research Service reports), which form the majority of the online resources, to articles by nonprofit organizations. To assist viewers in judging resources, each entry includes the type of resource, title, author, affiliation, peer review process, and abstract, along with the URL. A search function allows users to search full-text resources (by title, author, country, category/ keyword). Also at the site are subject-specific bibliographic resources, current news, and a bulletin board.

286

A Flexible, Extensible Online Testing System for Mathematics  

ERIC Educational Resources Information Center

An online testing system developed for entry-skills testing of first-year university students in algebra and calculus is described. The system combines the open-source computer algebra system "Maxima" with computer scripts to parse student answers, which are entered using standard mathematical notation and conventions. The answers can involve…

Passmore, Tim; Brookshaw, Leigh; Butler, Harry

2011-01-01

287

How Do Online Social Networks Grow?  

PubMed Central

Online social networks such as Facebook, Twitter and Gowalla allow people to communicate and interact across borders. In past years online social networks have become increasingly important for studying the behavior of individuals, group formation, and the emergence of online societies. Here we focus on the characterization of the average growth of online social networks and try to understand which are possible processes behind seemingly long-range temporal correlated collective behavior. In agreement with recent findings, but in contrast to Gibrat's law of proportionate growth, we find scaling in the average growth rate and its standard deviation. In contrast, Renren and Twitter deviate, however, in certain important aspects significantly from those found in many social and economic systems. Whereas independent methods suggest no significance for temporally long-range correlated behavior for Renren and Twitter, a scaling analysis of the standard deviation does suggest long-range temporal correlated growth in Gowalla. However, we demonstrate that seemingly long-range temporal correlations in the growth of online social networks, such as in Gowalla, can be explained by a decomposition into temporally and spatially independent growth processes with a large variety of entry rates. Our analysis thus suggests that temporally or spatially correlated behavior does not play a major role in the growth of online social networks.

Zhu, Konglin; Li, Wenzhong; Fu, Xiaoming; Nagler, Jan

2014-01-01

288

Seidman's Online Insider  

NSDL National Science Digital Library

"In, Around and Online" - A Weekly Summary of Consumer Online Services is a painless way to stay tuned to events in the worlds of Compuserve, Prodigy, America Online, etc. A weekly report, not too long, and an easy read.

Seidman, Robert.

1994-01-01

289

NCI Visuals Online  

Cancer.gov

NCI Visuals Online contains images from the collections of the Office of Communications and Education, National Cancer Institute. For more information about Visuals Online, including reuse and contact information, see About Visuals Online.

290

Saturn Science from Entry Probes  

NASA Astrophysics Data System (ADS)

Data from atmospheric entry probe missions at the giant planets could uniquely discriminate between competing theories of solar system formation and the origin and evolution of the giant planets and their atmospheres, providing for valuable comparative studies of giant planets as well as providing a laboratory for studying the atmospheric chemistries, dynamics, and interiors of all the planets including Earth. The giant planets also represent a valuable link to extrasolar planetary systems. For these reasons, a Saturn Probe mission with a shallow probe is ranked by the recent U.S. Planetary Science Decadal Survey as a high priority for a New Frontiers class mission. Atmospheric constituents needed to constrain theories of solar system formation and the origin and evolution of the giant planets could be accessed and sampled by shallow entry probes. Many important constituents are either spectrally inactive or are beneath an atmospheric overburden that is optically thick at useful wavelengths and are therefore not remotely accessible by flyby or orbiting spacecraft. A small, scientifically focused shallow entry probe mission could make critical abundance measurements of key constituents, and could measure profiles of atmospheric structure and dynamics at a vertical resolution that is significantly higher than could be achieved by remote sensing techniques. The Galileo mission began the detailed study of the solar system's two gas giants by dropping an entry probe into the atmosphere of Jupiter and deploying an orbiter around Jupiter. In 2016-2017 the Juno mission will make measurements of Jupiter's deep oxygen abundance, and gravitational and magnetic fields. In the same epoch, the Cassini orbiter is planned to pursue a set of Juno-like orbits to make comparable gravitational and magnetic field measurements of Saturn. A Saturn atmospheric entry probe would complete the quartet of missions needed for a comparative study of the two gas giants, leading to improved models of solar system formation. A highly focused entry probe mission at Saturn carrying a minimal science payload could address unique and critical science while fitting within existing program budget caps. Fundamental measurements include abundances of the noble gases He, Ne, Ar, Kr, and Xe and, abundances of key isotopic ratios 4He/3He, D/H, 15N/14N, 18O/16O, and 13C/12C. Detection of disequilibrium species CO, PH3, AsH3, and GeH4 is diagnostic of deeper internal processes and dynamics of the atmosphere along the probe descent. Abundances of these key constituents, as well as carbon which does not condense at Saturn, sulfur which is expected to be well-mixed below the 4 to 5-bar ammonium hydrosulfide (NH4SH) cloud, and gradients of nitrogen below the NH4SH cloud and oxygen in the upper layers of the H2O and H2O-NH4 solution cloud, could be measured by an entry probe descending through 10 bars. In concert with the results from Galileo, Cassini, and Juno, a shallow Saturn probe capable of measuring abundances of key constituents not accessible by a remote sensing mission would provide critical measurements enabling a comparison of composition and dynamical processes on the giant planets while also providing an improved context for understanding exoplanets.

Atkinson, David H.; Coustenis, Athena; Lunine, Jonathan; Simon-Miller, Amy; Atreya, Sushil; Brinckerhoff, William; Colaprete, Anthony; Guillot, Tristan; Mahaffy, Paul; Reh, Kim; Spilker, Linda; Spilker, Tom; Webster, Chris

2013-04-01

291

19 CFR 143.35 - Procedure for electronic entry summary.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 false Procedure for electronic entry summary. 143.35 Section 143...CONTINUED) SPECIAL ENTRY PROCEDURES Electronic Entry Filing § 143.35 Procedure for electronic entry summary. In order...

2013-04-01

292

Viral entry mechanisms: the increasing diversity of paramyxovirus entry  

PubMed Central

The paramyxovirus family contains established human pathogens such as measles virus and human respiratory syncytial virus, and emerging pathogens including the Hendra and Nipah viruses and the recently identified human metapneumovirus. Two major envelope glycoproteins, the attachment protein and the fusion protein, promote the processes of viral attachment and virus-cell membrane fusion required for entry. While common mechanisms of fusion protein proteolytic activation and the mechanism of membrane fusion promotion have been shown in recent years, considerable diversity exists in the family related to receptor binding and the potential mechanisms of fusion triggering.

Smith, Everett Clinton; Popa, Andreea; Chang, Andres; Masante, Cyril; Dutch, Rebecca Ellis

2009-01-01

293

NOVA Online: Life's Greatest Miracle  

NSDL National Science Digital Library

The companion Web site to the NOVA program Life's Greatest Miracle, which PBS will re-broadcast on February 26th, is a great site for anyone interested in human pregnancy and fetal development. With wide-ranging information, this Web site is likely to appeal to many different audiences; users can even choose to view the entire program online. Those users interested mainly in the science of human development will enjoy How Cells Divide and How Sex is Determined. Those more interested in learning about pregnancy can read journal entries from an expectant mother or learn about various screening techniques used to assess the health of an unborn baby. An essay on the stem cell debate gives insight to the controversial topic. A teacher's guide is also provided, offering suggestions for discussion and activities associated with the television program.

2001-01-01

294

Agronomy Journal Online  

NSDL National Science Digital Library

The American Society of Agronomy has announced online availability of this journal, in conjunction with Stanford University's HighWire Press. Online full-text content for the Agronomy Journal begins with the July-August 1999 issue, with online abstracts from January-February 1998. Note that the free trial period for the online journal ends May 1, 2001.

295

Strategies for Online Educators  

ERIC Educational Resources Information Center

For a variety of reasons, online education is an increasingly viable option for many students seeking to further their education. Because of this, the demand for online instructors continues to increase. Instructors transitioning to the online environment from the traditional classroom may find teaching online overwhelming. While some practices…

Motte, Kristy

2013-01-01

296

LD Online  

NSDL National Science Digital Library

LD Online is a website focused on providing information on learning disabilities (LD) and attention-deficit hyperactivity disorder (ADHD) which is geared towards parents, teachers, and professionals. The site is an educational service of public television station WETA, and also works with the National Joint Committee on Learning Disabilities. Visitors will find that the site addresses both children and adults with LD and ADHD, and those who are unfamiliar with LD and ADHD will appreciate the site's "Getting Started" link, which has "LD Basics", "ADHD Basics", "Questions + Answers" and a "Glossary". The "Multimedia" link of videos, audio, and transcripts will give visitors the opportunity to listen to or watch experts in the field. They can also listen to the personal stories of families, teachers, and kids with LD or ADHD. Practical tips for parents are also offered in the Multimedia link. Users will be pleasantly surprised by the optimism and determination of some of these kids, when reading their personal stories in the "Your Stories" section.

297

Wikipedia: Friend, Not Foe  

ERIC Educational Resources Information Center

As online research has become an increasingly standard activity for middle school and high school students, Wikipedia (http://www.wikipedia.org) has simultaneously emerged as the bane of many teachers who include research-focused assignments in their courses. An online encyclopedia that allows anyone to edit its entries, Wikipedia has educators…

Crovitz, Darren; Smoot, W. Scott

2009-01-01

298

Analyzing Online Behaviors, Roles, and Learning Communities via Online Discussions  

ERIC Educational Resources Information Center

Online learning communities are an important means of sharing and creating knowledge. Online behaviors and online roles can reveal how online learning communities function. However, no study has elucidated the relationships among online behaviors, online roles, and online learning communities. In this study, 32 preservice teachers participated in…

Yeh, Yu-Chu

2010-01-01

299

Musicals101.com: The Cyber Encyclopedia of Musical Theatre, TV and Film  

NSDL National Science Digital Library

Around for close to two hundred years in one form or another, musicals are much loved by many professional and amateur companies who tread the boards. Authored and maintained by John Kenrick, an expert on musical theater history (and a personal assistant to six Tony-winning producers), the site contains close to 900 Web pages of information about the history, development, and current traditions of musical theater. Persons seeking basic information about the history of the art form will want to read the essay "What is a Musical?" Each historical section is divided into smaller sub-sections, so users can move to each section quickly. One of the best sections on the site is devoted to Mr. Kenrick's reviews of cast recordings, current and past productions, and those recordings that should be avoided. Finally, Mr. Kenrick also offers brief "courses" online dealing with some of the great names of musical theater, such as George M. Cohan and Ethel Merman.

1996-01-01

300

19 CFR 10.112 - Filing free entry documents or reduced duty documents after entry.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 2013-04-01 false Filing free entry documents or reduced duty documents...THE TREASURY ARTICLES CONDITIONALLY FREE, SUBJECT TO A REDUCED RATE, ETC. General Provisions Late Filing of Free Entry and Reduced Duty Documents...

2013-04-01

301

An Eight-Year Study of Online Lecture Use in a Medical Gross Anatomy and Embryology Course  

ERIC Educational Resources Information Center

Online lectures have been used in lieu of live lectures in our gross anatomy and embryology course for the past eight years. We examined patterns of online lecture use by our students and related that use to academic entry measures, gender and examination performance. Detailed access records identified by student were available from server logs.…

Nieder, Gary L.; Borges, Nicole J.

2012-01-01

302

Conveyor belt entry fire hazards and control  

Microsoft Academic Search

A fire in a coal mine conveyor belt entry represent a major safety and health risk to miners. Fighting belt entry fires can be a commanding effort. If there is a failure of one aspect in the fire fighting needs such as a dissimilar hose-valve connection, then it can result in the inability to extinguish a fire. Fire incident data

H. Verakis; M. Hockenberry

2008-01-01

303

Entry-Level Training. Review of Research.  

ERIC Educational Resources Information Center

Existing research on vocational education and training (VET) for entry-level employment in Australia was reviewed. According to the review, research on entry-level VET has enhanced knowledge related to the following: competence requiring knowledge and understanding as well as performance; graded standards-based assessment; problems of policy…

Lundberg, David

304

Predictor-Corrector Entry Guidance for Reusable Launch Vehicles  

NASA Technical Reports Server (NTRS)

An online entry guidance algorithm has been developed using a predictor-corrector approach. The algorithm is designed for the Reusable Launch Vehicle (RLV) and is demonstrated by using, the X-33 model. The objective of the design is to handle widely dispersed entry conditions and deliver the vehicle at the Terminal Area Energy Management (TAEM) interface box within an acceptable tolerance and without violating any of the vehicle physical constraints. Combination of several control variables is used in testing the performance and computational requirement of the algorithm. The control variables are the bank angle, angle-of-attack and the time for roll reversal. The bank angle and angle-of-attack profiles are the nominal profiles plus the perturbations in each direction. The initial guess of the bank profile is a 45 degrees bank angle with reversal at 360 seconds from liftoff. A six-element state vector is propagated to the TAEM interface box through the integration of the equations of motion (EOM). Altitude, heading and range errors are computed between the desired and the achieved state at the TAEM interface. These errors are used to correct the initial guess of the control variables. This process is repeated until the errors meet an acceptable level at the TAEM interface. Several numerical optimization methods are used to evaluate the convergent property of the predictor-predictor methodology. Successful results are demonstrated using the X-33 model.

Youssef, Hussein; Chowdhry, Rajiv; Lee, Howard; Zimmerman, Curtis; Brandon, Larry (Technical Monitor)

2001-01-01

305

Orion Entry Display Feeder and Interactions with the Entry Monitor System  

NASA Technical Reports Server (NTRS)

The Orion spacecraft is designed to return astronauts to a landing within 10 km of the intended landing target from low Earth orbit, lunar direct-entry, and lunar skip-entry trajectories. Al pile the landing is nominally controlled autonomously, the crew can fly precision entries manually in the event of an anomaly. The onboard entry displays will be used by the crew to monitor and manually fly the entry, descent, and landing, while the Entry Monitor System (EMS) will be used to monitor the health and status of the onboard guidance and the trajectory. The entry displays are driven by the entry display feeder, part of the Entry Monitor System (EMS). The entry re-targeting module, also part of the EMS, provides all the data required to generate the capability footprint of the vehicle at any point in the trajectory, which is shown on the Primary Flight Display (PFD). It also provides caution and warning data and recommends the safest possible re-designated landing site when the nominal landing site is no longer within the capability of the vehicle. The PFD and the EMS allow the crew to manually fly an entry trajectory profile from entry interface until parachute deploy having the flexibility to manually steer the vehicle to a selected landing site that best satisfies the priorities of the crew. The entry display feeder provides data from the ENIS and other components of the GNC flight software to the displays at the proper rate and in the proper units. It also performs calculations that are specific to the entry displays and which are not made in any other component of the flight software. In some instances, it performs calculations identical to those performed by the onboard primary guidance algorithm to protect against a guidance system failure. These functions and the interactions between the entry display feeder and the other components of the EMS are described.

Baird, Darren; Bernatovich, Mike; Gillespie, Ellen; Kadwa, Binaifer; Matthews, Dave; Penny, Wes; Zak, Tim; Grant, Mike; Bihari, Brian

2010-01-01

306

Academia: A Online Magazine and Resource for Academic Libraries  

NSDL National Science Digital Library

"Academia: A Monthly Online Magazine of Academic Titles and Information," is provided by YBP Library Services. This publication, which is aimed at academic librarians, includes lists of University Press best sellers based on the University Press titles most in demand by academic libraries; academic essentials monthly lists of books pertaining to one subject; academic best sellers based on demand by academic libraries; and a huge upcoming books list, sorted into 100 subject areas and by academic level. Each entry in the upcoming lists includes author, title, publisher, ISBN, and price. Some entries include Dewey and/or LC classification.

1997-01-01

307

Thermal Soak Analysis of Earth Entry Vehicles  

NASA Technical Reports Server (NTRS)

The Multi-Mission Earth Entry Vehicle project is developing an integrated tool called Multi Mission System Analysis for Planetary Entry Descent and Landing that will provide key technology solutions including mass sizing, aerodynamics, aerothermodynamics, and thermal and structural analysis for any given sample return mission. Thermal soak analysis and temperature predictions of various components including the payload container of the entry vehicle are part of the solution that this tool will offer to mission designers. The present paper focuses on the thermal soak analysis of an entry vehicle design based on the Mars Sample Return entry vehicle geometry and discusses a technical approach to develop parametric models for thermal soak analysis that will be integrated into the tool.

Agrawal, Parul; Sepka, Steven A.; Aliaga, Jose F.; Venkatapathy, Ethiraj; Samareh, Jamshid A.

2012-01-01

308

Perceived usefulness of data entry tools in medical encounters: a survey.  

PubMed

Electronic Health Records allows direct data entry and is an important factor for accurate diagnosis. However, two drawbacks of this system is the time needed to create them, which can reduce health care professional productivity, and the fact that it is error prone. It is important, therefore, to select the most appropriate methods and tools for data entry by the health care providers at the point of care in order to minimize a loss of productivity. The study aims to understand health care professionals' perceptions of the data entry process, and determine the appropriate methods, tools and functions that would facilitate the process, minimize loss of productivity and improve quality. A questionnaire which consisting of 18 basic questions (including demographic data) was posted on a web site which hosts questionnaires, on an established online community space and also mailed to health care professionals who are working in various hospitals for a duration of 10 months. Totally, 533 medical care professionals who are primarily from Turkey participated in the survey, of which 284 were medical doctors, 127 were nurses and the rest, other medical professionals. While the clear majority of participants involved in data entry use keyboard and mouse, most expressed a preference for more convenient methods, such as voice recognition or touch screen. Furthermore, physicians reported rarely spending more than 15 min for each consultation and conducting 21-30 examinations a day. The main motivation for creating an efficient direct data entry is to increase time allowed for patient examination, and to improve accuracy of diagnosis. Despite a heavy workload, health care professionals are very receptive to the idea of using a convenient data entry tool and keeping electronic patient records. Emergent data entry technologies in health sector can improve the quality of examinations, physicians' productivity and can decrease the percentage of medical misdiagnosis. PMID:24158426

Celikkan, Ufuk; Sahin, Yasar Guneri; Senuzun, Fisun

2013-12-01

309

Earth Science Online Resources  

NSDL National Science Digital Library

These resources are designed to accompany the textbook 'Earth Science' by Pearson Prentice Hall. Materials include quizzes, online field trips, Powerpoint presentations, study guides, animations, and links to online resources.

310

The Online Underworld.  

ERIC Educational Resources Information Center

Discusses some of the misuses of telecommunicating using school computers, including online piracy, hacking, phreaking, online crime, and destruction boards. Suggests ways that schools can deal with these problems. (TW)

Scrogan, Len

1988-01-01

311

Kids and Socializing Online  

MedlinePLUS

... Kids About What They’re Doing Online Remind Kids that Online Actions Have Consequences The words kids ... and the images they post have consequences offline. Kids should post only what they’re comfortable with ...

312

TOXLINE (TOXICOLOGY INFORMATION ONLINE)  

EPA Science Inventory

TOXLINE? (TOXicology information onLINE) are the National Library of Medicines extensive collection of online bibliographic information covering the pharmacological, biochemical, physiological, and toxicological effects of drugs and other chemicals. TOXLINE and TOXLINE65 together...

313

CV Surgery Online  

NSDL National Science Digital Library

Stanford University's HighWire Press has announced the online publication of several journals. CV Surgery Online offers "a fully searchable online compilation of articles pertinent to the cardiothoracic and vascular surgeon from the 5 American Heart Association Journals: Circulation, Circulation Research, Hypertension, Stroke, and Arteriosclerosis, Thrombosis, and Vascular Surgery." Published by the American Heart Association in conjunction with HighWire Press, the free trial period for CV Surgery Online ended December 31, 2000.

1999-01-01

314

19 CFR 141.5 - Time limit for entry.  

Code of Federal Regulations, 2013 CFR

...HOMELAND SECURITY; DEPARTMENT OF THE TREASURY (CONTINUED) ENTRY OF MERCHANDISE Liability for Duties and Requirement To Enter Merchandise § 141.5 Time limit for entry. Merchandise for which entry is required will be entered within 15...

2013-04-01

315

19 CFR 141.52 - Separate entries for different portions.  

Code of Federal Regulations, 2013 CFR

...DEPARTMENT OF THE TREASURY (CONTINUED) ENTRY OF MERCHANDISE Quantity of Merchandise To Be Included in an Entry § 141.52 Separate...which separate entries are tendered are covered by separate bills of lading. (f) The consignment consists of...

2013-04-01

316

Teaching Astronomy Online  

Microsoft Academic Search

This article is intended to provide an overview of the practical, pedagogical, and philosophical considerations in designing a Web-based astronomy course, and to demonstrate the educational benefits that such online courses can afford students. Because online students need to take more responsibility for their learning, faculty must make course expectations extremely clear. Online education allows for increased student participation and

Mary L. Radnofsky; Matthew Bobrowsky

2004-01-01

317

Implementing Online Physical Education  

ERIC Educational Resources Information Center

Online physical education, although seemingly an oxymoron, appears to be the wave of the future at least for some students. The purpose of this article is to explore research and options for online learning in physical education and to examine a curriculum, assessment, and instructional model for online learning. The article examines how physical…

Mohnsen, Bonnie

2012-01-01

318

Facilitating Deepened Online Learning  

Microsoft Academic Search

Successful online learning depends on instructors facilitating learner collaboration in text-based asynchronous dialogue. Focusing and deepening online dialogue among learners is challenging. Many e-moderators are satisfied to stop at active brainstorming. The potential for deepened learning using online tools is largely untapped. Clear guidelines are needed for using voice (conceptual facilitator, personal muse, mediator) and critical thinking strategies (identifying a

Sarah Haavind

2005-01-01

319

Online Learning. Symposium.  

ERIC Educational Resources Information Center

This document contains three papers from a symposium on online learning that was conducted as part of a conference on human resource development (HRD). "An Instructional Strategy Framework for Online Learning Environments" (Scott D. Johnson, Steven R. Aragon) discusses the pitfalls of modeling online courses after traditional instruction instead…

2002

320

Vegetarian Nutrition online  

Microsoft Academic Search

Many consumers have questions about vegetarian nutrition. In order to meet their needs, it is important to know which topics are of particular interest. Subscribers to commercial online computer services represent one group of consumers. Interest in various topics related to vegetarian nutrition among users of two commercial online services (America Online and CompuServe) was examined retrospectively by collecting information

E. Larson; B. Scott; B. Pasternak; D. Wasserman

1995-01-01

321

Entry Guidance for the Reusable Launch Vehicle  

NASA Technical Reports Server (NTRS)

The X-33 Advanced Technology Demonstrator is a half-scale prototype developed to test the key technologies needed for a full-scale single-stage reusable launch vehicle (RLV). The X-33 is a suborbital vehicle that will be launched vertically, and land horizontally. The goals of this research were to develop an alternate entry guidance scheme for the X-33 in parallel to the actual X-33 entry guidance algorithms, provide comparative and complementary study, and identify potential new ways to improve entry guidance performance. Toward these goals, the nominal entry trajectory is defined by a piecewise linear drag-acceleration-versus-energy profile, which is in turn obtained by the solution of a semi-analytical parameter optimization problem. The closed-loop guidance is accomplished by tracking the nominal drag profile with primarily bank-angle modulation on-board. The bank-angle is commanded by a single full-envelope nonlinear trajectory control law. Near the end of the entry flight, the guidance logic is switched to heading control in order to meet strict conditions at the terminal area energy management interface. Two methods, one on ground-track control and the other on heading control, were proposed and examined for this phase of entry guidance where lateral control is emphasized. Trajectory dispersion studies were performed to evaluate the effectiveness of the entry guidance algorithms against a number of uncertainties including those in propulsion system, atmospheric properties, winds, aerodynamics, and propellant loading. Finally, a new trajectory-regulation method is introduced at the end as a promising precision entry guidance method. The guidance principle is very different and preliminary application in X-33 entry guidance simulation showed high precision that is difficult to achieve by existing methods.

Lu, Ping

1999-01-01

322

Available hardware for automated entry control  

SciTech Connect

Automated entry control has become an increasingly important issue at facilities where budget constraints are limiting options for manned entry control points. Three questions are immediately raised when automated entry control is considered: What hardware is available How much does it cost How effective is it in maintaining security Ongoing work at Sandia National Labs is attempting to answer these questions and establish a data base for use by facility security managers working the problem of how to maintain security on a limited budget. 14 refs.

Holmes, J.P.

1990-11-01

323

ODLIS: Online Dictionary of Library and Information Science  

NSDL National Science Digital Library

This online dictionary, newly updated, provides a glossary of over 1,800 terms related to library and information sciences, with an emphasis on online library science. Once a handout for author Joan Reitz's undergraduate students in library sciences at Western Connecticut State University, the dictionary has expanded over the years to its present substantial HTML incarnation. The entries are well written and professional and should be of use to students, librarians, and even those patrons who are tired of being intimidated by not knowing what exactly "Boolean" or "MARC" mean.

324

Navy Delayed Entry Program Attrition Analysis.  

National Technical Information Service (NTIS)

This thesis was conducted to identify various personal and organizational predictors of Navy enlisted personnel Delayed Entry Program (DEP) attrition. Every non-prior service male recruit who entered DEP in Fiscal Years 1980 through 1983 was tracked for 1...

M. M. Murray

1985-01-01

325

Aerocapture Inflatable Decelerator for Planetary Entry  

NASA Technical Reports Server (NTRS)

Forward Attached Inflatable Decelerators, more commonly known as inflatable aeroshells, provide an effective, cost efficient means of decelerating spacecrafts by using atmospheric drag for aerocapture or planetary entry instead of conventional liquid propulsion deceleration systems. Entry into planetary atmospheres results in significant heating and aerodynamic pressures which stress aeroshell systems to their useful limits. Incorporation of lightweight inflatable decelerator surfaces with increased surface-area footprints provides the opportunity to reduce heat flux and induced temperatures, while increasing the payload mass fraction. Furthermore, inflatable aeroshell decelerators provide the needed deceleration at considerably higher altitudes and Mach numbers when compared with conventional rigid aeroshell entry systems. Inflatable aeroshells also provide for stowage in a compact space, with subsequent deployment of a large-area, lightweight heatshield to survive entry heating. Use of a deployable heatshield decelerator enables an increase in the spacecraft payload mass fraction and may eliminate the need for a spacecraft backshell.

Reza, Sajjad; Hund, Richard; Kustas, Frank; Willcockson, William; Songer, Jarvis; Brown, Glen

2007-01-01

326

Generic aerocapture atmospheric entry study, volume 1  

NASA Technical Reports Server (NTRS)

An atmospheric entry study to fine a generic aerocapture vehicle capable of missions to Mars, Saturn, and Uranus is reported. A single external geometry was developed through atmospheric entry simulations. Aerocapture is a system design concept which uses an aerodynamically controlled atmospheric entry to provide the necessary velocity depletion to capture payloads into planetary orbit. Design concepts are presented which provide the control accuracy required while giving thermal protection for the mission payload. The system design concepts consist of the following elements: (1) an extendable biconic aerodynamic configuration with lift to drag ratio between 1.0 and 2.0; (2) roll control system concepts to control aerodynamic lift and disturbance torques; (3) aeroshell design concepts capable of meeting dynamic pressure loads during aerocapture; and (4) entry thermal protection system design concepts to meet thermodynamic loads during aerocapture.

1980-01-01

327

HIV-2 susceptibility to entry inhibitors.  

PubMed

Currently, there is a growing interest in using entry inhibitors to treat HIV-2-infected patients because, among the available drugs, few are fully active against HIV-2. Recent studies indicate that maraviroc and other experimental entry inhibitors, including new CCR5 and CXCR4 antagonists, inhibit primary isolates of HIV-2 as well as HIV-1 and may, therefore, expand the existing therapeutic armamentarium against HIV-2. There are, however, significant differences between the evolution of HIV-1 and HIV-2 envelope glycoproteins during infection that can lead to differences in the response to therapy with entry inhibitors over the course of the infection. Here, we review the available data on the susceptibility of HIV-2 to entry inhibitors in the context of the evolution of the sequence, structure, and function of envelope glycoproteins during infection. PMID:23449229

Borrego, Pedro; Taveira, Nuno

2013-01-01

328

Multiscale perspectives of virus entry via endocytosis  

PubMed Central

Most viruses take advantage of endocytic pathways to gain entry into host cells and initiate infections. Understanding of virus entry via endocytosis is critically important for the design of antiviral strategies. Virus entry via endocytosis is a complex process involving hundreds of cellular proteins. The entire process is dictated by events occurring at multiple time and length scales. In this review, we discuss and evaluate the available means to investigate virus endocytic entry, from both experimental and theoretical/numerical modeling fronts, and highlight the importance of multiscale features. The complexity of the process requires investigations at a systems biology level, which involves the combination of different experimental approaches, the collaboration of experimentalists and theorists across different disciplines, and the development of novel multiscale models.

2013-01-01

329

Plasma Entry into the Earth's Magnetosphere.  

National Technical Information Service (NTIS)

Recent observations of the direct entry of magnetosheath plasma into the sunlit hemisphere of the distant polar magnetosphere via the polar cusps have provided further motivation for in situ examination of plasmas throughout the distant magnetosphere in o...

L. A. Frank

1972-01-01

330

19 CFR 191.143 - Drawback entry.  

Code of Federal Regulations, 2010 CFR

... DRAWBACK Foreign-Built Jet Aircraft Engines Processed in the United States...covering these foreign-built jet aircraft engines shall be filed on Customs...show that the entry covers jet aircraft engines processed under §...

2012-04-01

331

Live Cell Imaging of Viral Entry  

PubMed Central

Viral entry encompasses the initial steps of infection starting from virion host cell attachment to viral genome release. Given the dynamic interactions between the virus and the host, many questions related to viral entry can be directly addressed by live cell imaging. Recent advances in fluorescent labeling of viral and cellular components, fluorescence microscopy with high sensitivity and spatiotemporal resolution, and image analysis enabled studies of a broad spectrum across many viral entry steps, including virus-receptor interactions, internalization, intracellular transport, genomic release, nuclear transport, and cell-to-cell transmission. Collectively, these live cell imaging studies have not only enriched our understandings of the viral entry mechanisms, but also provided novel insights into basic cellular biology processes.

Sun, Eileen; He, Jiang; Zhuang, Xiaowei

2013-01-01

332

Entry, Descent, and Landing Operations Analysis for the Genesis Re-Entry Capsule  

NASA Technical Reports Server (NTRS)

On September 8, 2004, the Genesis spacecraft returned to Earth after spending 29 months about the sun-Earth libration point collecting solar wind particles. Four hours prior to Earth arrival, the entry capsule containing the samples was released for entry and subsequent landing at the Utah Test and Training Range. This paper provides an overview of the entry, descent, and landing trajectory analysis that was performed during the Mission Operations Phase leading up to final approach to Earth. The operations effort accurately delivered the entry capsule to the desired landing site. The final landing location was 8.3 km from the target, and was well within the allowable landing area. Preliminary reconstruction analyses indicate that the actual entry trajectory was very close to the pre-entry prediction.

Desai, Prasun N.; Lyons, Dan T.

2005-01-01

333

Entry/Exit Port testing, test report  

SciTech Connect

The Waste Receiving and Processing Module I (WRAP-1) facility must have the ability to allow 55-gallon drums to enter and exit glovebox enclosures. An Entry/Exit Port (Appendix 1, Figure 1), designed by United Engineers and Constructors (UE&C), is one method chosen for drum transfer. The Entry/Exit Port is to be used for entry of 55-gallon drums into both process entry gloveboxes, exit of 55-gallon drum waste pucks from the low-level waste (LLW) glovebox, and loadout of waste from the restricted waste management glovebox. The Entry/Exit Port relies on capture velocity air flow and a neoprene seal to provide alpha confinement when the Port is in the open and closed positions, respectively. Since the glovebox is in a slight vacuum, air flow is directed into the glovebox through the space between the overpack drum and glovebox floor. The air flow is to direct any airborne contamination into the glovebox. A neoprene seal is used to seal the Port door to the glovebox floor, thus maintaining confinement in the closed position. Entry/Exit Port testing took place February 17, 1993, through April 14, 1993, in the 305 building of Westinghouse Hanford Company. Testing was performed in accordance with the Entry/Exit Port Testing Test Plan, document number WHC-SD-WO26-TP-005. A prototype Entry/Exit Port built at the Hanford Site was tested using fluorescent paint pigment and smoke candles as simulant contaminants. This test report is an interim test report. Further developmental testing is required to test modifications made to the Port as the original design of the Port did not provide complete confinement during all stages of operation.

Winkelman, R.H.

1993-05-01

334

BALLUTE ENTRY, DESCENT AND LANDING ON TRITON  

Microsoft Academic Search

A ballute for entry and descent has been evaluated for the moon Triton of the planet Neptune. A spherical ballute was evaluated, with a surface density of 10 g\\/m 2 of Kapton that is capable of peak temperatures up to 500°C, radiating on both sides with emissivity of 0.8. An acceptably wide entry corridor was found for deceleration at moderate

Angus McRonald

2006-01-01

335

Trajectory Reconstruction for the Genesis Entry  

NASA Technical Reports Server (NTRS)

An overview of the reconstruction analyses performed for the Genesis capsule entry is described. The results indicate that the actual entry prior to the drogue deployment failure was very close to the pre-entry predictions. The capsule landed 8.3 km south of the desired target at Utah Test and Training Range. Analysis on infrared video footage (obtained from the tracking stations) during the descent estimated the onset of the capsule tumble at Mach 0.9. Frequency analysis on the infrared video data indicates that the aerodynamics generated for the Genesis capsule reasonably predicted the drag and static stability. Observations of the heatshield support the pre-entry simulation estimates of a small hypersonic angles-of-attack, since there is very little, if any, charring of the shoulder region or the afterbody. Through this investigation, an overall assertion can be made that all the data gathered from the Genesis entry is consistent with flight performance close to the nominal pre-entry prediction. Consequently, the design principles and methodologies utilized for the flight dynamics, aerodynamics, and aerothermodynamics analyses have been corroborated.

Desai, Prasun N.; Qualls, Garry D.; Schoenenberger, Mark

2005-01-01

336

Planetary/DOD entry technology flight experiments. Volume 2: Planetary entry flight experiments  

NASA Technical Reports Server (NTRS)

The technical feasibility of launching a high speed, earth entry vehicle from the space shuttle to advance technology for the exploration of the outer planets' atmospheres was established. Disciplines of thermodynamics, orbital mechanics, aerodynamics propulsion, structures, design, electronics and system integration focused on the goal of producing outer planet environments on a probe shaped vehicle during an earth entry. Major aspects of analysis and vehicle design studied include: planetary environments, earth entry environment capability, mission maneuvers, capabilities of shuttle upper stages, a comparison of earth entry planetary environments, experiment design and vehicle design.

Christensen, H. E.; Krieger, R. J.; Mcneilly, W. R.; Vetter, H. C.

1976-01-01

337

Online Courses: NSTA Online Short Course: Energy  

NSDL National Science Digital Library

Confounded by kinetic and potential energy? Intimidated by thermal energy and heat? Mystified by the concepts of conduction, convection, and radiation? You are not alone. The NSTA Online Short Course: Energy is the perfect course for science teachers inte

1900-01-01

338

Generic Entry, Reformulations, and Promotion of SSRIs  

PubMed Central

Background Previous research has shown that a manufacturer’s promotional strategy for a brand-name drug is typically affected by generic entry. However, little is known about how newer strategies to extend patent life, including product reformulation introduction or obtaining approval to market for additional clinical indications, influence promotion. Objective To examine the relationship between promotional expenditures, generic entry, reformulation entry, and new indication approval. Study Design/Setting We used quarterly data on national product-level promotional spending (including expenditures for physician detailing and direct-to-consumer advertising (DTCA), and the retail value of free samples distributed in physician offices) for selective serotonin reuptake inhibitors (SSRIs) over the period 1997 through 2004. We estimated econometric models of detailing, DTCA, and total quarterly promotional expenditures as a function of the timing of generic entry, entry of new product formulations, and Food and Drug Administration (FDA) approval for new clinical indications for existing medications in the SSRI class. Main Outcome Measure Expenditures by pharmaceutical manufacturers for promotion of antidepressant medications. Results Over the period 1997–2004, there was considerable variation in the composition of promotional expenditures across the SSRIs. Promotional expenditures for the original brand molecule decreased dramatically when a reformulation of the molecule was introduced. Promotional spending (both total and detailing alone) for a specific molecule was generally lower after generic entry than before, although the effect of generic entry on promotional spending appears to be closely linked with the choice of product reformulation strategy pursued by the manufacturer. Detailing expenditures for Paxil were increased after the manufacturer received FDA approval to market the drug for generalized anxiety disorder (GAD), while the likelihood of DTCA outlays for the drug was not changed. In contrast, FDA approval to market Paxil and Zoloft for social anxiety disorder (SAD) did not affect the manufacturers’ detailing expenditures but did result in a greater likelihood of DTCA outlays. Conclusion The introduction of new product formulations appears to be a common strategy for attempting to extend market exclusivity for medications facing impending generic entry. Manufacturers that introduced a reformulation before generic entry shifted most promotion dollars from the original brand to the reformulation long before generic entry, and in some cases manufacturers appeared to target a particular promotion type for a given indication. Given the significant impact pharmaceutical promotion has on demand for prescription drugs, these findings have important implications for prescription drug spending and public health.

Donohue, Julie M.; Koss, Catherine; Berndt, Ernst R.; Frank, Richard G.

2009-01-01

339

SHORT REPORT: PILOTING PAPERLESS DATA ENTRY FOR CLINICAL RESEARCH  

Microsoft Academic Search

Direct data entry, using handheld computers, may simplify and streamline data management, especially in remote settings. We compared the accuracy of data entry using the current standard practice (a paper-based case report form with double data entry) with that using a personal digital assistant (PDA) in a clinical study in rural Gabon. The rate of discrepant entries was 1.7%. Categorical

MICHEL A. MISSINOU; CHRISTOPHER H. O. OLOLA; SAADOU ISSIFOU; PIERRE-BLAISE MATSIEGUI; AYOLA A. ADEGNIKA; STEFFEN BORRMANN; DAVID WYPIJ; TERRIE E. TAYLOR; PETER G. KREMSNER

340

Improving Lunar Return Entry Footprints Using Enhanced Skip Trajectory Guidance  

Microsoft Academic Search

The impending development of NASA's Crew Exploration Vehicle (CEV) will require a new entry guidance algorithm that provides sufficient performance to meet all requirements. This study examined the effects on entry footprints of enhancing the skip trajectory entry guidance used in the Apollo program. The skip trajectory entry guidance was modified to include a numerical predictor-corrector phase during atmospheric skip

Z. R. Putnam; S. H. Bairstow; G. H. Barton

341

A Model of Market Entry in an Emerging Technology Market  

Microsoft Academic Search

The timing of market entry is a critical decision, involving the need to balance the risk of premature entry with the problems of missed opportunities as a result of late entry. Drawing from several theoretical perspectives, we propose a model for explaining the reasons for early or delayed entry into an emerging technology market. A novel feature of our study

Rajiv K. Sinha; Charles H. Noble

2005-01-01

342

Atmospheric Entry Studies for Venus Missions: 45 Sphere-Cone Rigid Aeroshells and Ballistic Entries  

NASA Technical Reports Server (NTRS)

The present study considers direct ballistic entries into the atmosphere of Venus using a 45deg sphere-cone rigid aeroshell, a legacy shape that has been used successfully in the past in the Pioneer Venus Multiprobe Mission. For a number of entry mass and heatshield diameter combinations (i.e., various ballistic coefficients) and entry velocities, the trajectory space in terms of entry flight path angles between skip out and -30deg is explored with a 3DoF trajectory code, TRAJ. From these trajectories, the viable entry flight path angle space is determined through the use of mechanical and thermal performance limits on the thermal protection material and science payload; the thermal protection material of choice is entry-grade carbon phenolic, for which a material thermal response model is available. For mechanical performance, a 200 g limit is placed on the peak deceleration load experienced by the science instruments, and 10 bar is assumed as the pressure limit for entry-grade carbon-phenolic material. For thermal performance, inflection points in the total heat load distribution are used as cut off criteria. Analysis of the results shows the existence of a range of critical ballistic coefficients beyond which the steepest possible entries are determined by the pressure limit of the material rather than the deceleration load limit.

Prabhu, Dinesh K.; Spilker, Thomas R.; Allen, Gary A., Jr.; Hwang, Helen H.; Cappuccio, Gelsomina; Moses, Robert W.

2013-01-01

343

Analytic Guidance for the First Entry in a Skip Atmospheric Entry.  

National Technical Information Service (NTIS)

This paper presents an analytic method to generate a reference drag trajectory for the first entry portion of a skip atmospheric entry. The drag reference, expressed as a polynomial function of the velocity, will meet the conditions necessary to fit the r...

E. Garcia-Llama

2007-01-01

344

Lessons learned from planetary entry probe missions  

NASA Astrophysics Data System (ADS)

Probing the atmospheres and surfaces of the planets and their moons with fast moving entry probes has been a very useful and essential technique to obtain in situ or quasi in situ scientific data (ground truth) which could not otherwise be obtained from fly by or orbiter only missions and where balloon, aircraft or lander missions are too complex and too costly. Planetary entry probe missions have been conducted successfully on Venus, Mars, Jupiter and Titan after having been first demonstrated in the Earth's atmosphere. Future planetary missions should also include more entry probe missions back to Venus and to the outer planets. The success of and science returns from past missions, the need for more and unique data, and a continuously advancing technology generate confidence that future missions will be even more successful with respect to science return and technical performance. There are, however, unique challenges associated with entry probe missions and with building instruments for an entry probe, as compared to orbiters, landers, or rovers. Conditions during atmospheric entry are extreme. There are operating time constraints due to the usually short duration of the probe descent, and the instruments experience rapid environmental changes in temperature and pressure. In addition, there are resource limitations, i.e. mass, power, size and bandwidth. Because of the protective heat shield and the high acceleration the probe experiences during entry, the ratio of payload to total probe mass is usually much smaller than in other missions. Finally, the demands on the instrument design are determined in large part by conditions (pressure, temperature, composition) unique to the particular body under study, and as a result, there is no one-size-fits-all instrument for an atmospheric probe. Many of these requirements are more easily met by miniaturizing the probe instrumentation and consequently reducing the required size of the probe. Improved heat shield technology will also play an important role. The emergence over the past twenty years of Micro-electro-mechanical Systems (MEMS), utilizing lithographic semiconductor fabrication techniques to produce instrument systems in miniature, holds great promise for application to spaceflight. For example, a highly miniaturized, high performance and low-power gas chromatograph mass spectrometer would enormously benefit entry probe missions, allowing, for example, parallel measurements (e.g., multiple simultaneous gas chromatographic and direct atmospheric measurements). Such an instrument would also enable mass spectrometry on board small multiple entry probes. The challenge facing us in the development of MEMS based instruments is to move beyond the proof-of-concept, where research dollars tend to focus, and carry out the detailed work of developing high performance flight instrument systems on a chip which reach the required high technical readiness level for space flight.

Niemann, Hasso; Atreya, Sushil K.; Kasprzak, Wayne

345

Online organic chemistry  

NASA Astrophysics Data System (ADS)

This is a comprehensive study of the many facets of an entirely online organic chemistry course. Online homework with structure-drawing capabilities was found to be more effective than written homework. Online lecture was found to be just as effective as in-person lecture, and students prefer an online lecture format with shorter Webcasts. Online office hours were found to be effective, and discussion sessions can be placed online as well. A model was created that explains 36.1% of student performance based on GPA, ACT Math score, grade in previous chemistry course, and attendance at various forms of discussion. Online exams have been created which test problem-solving skills and is instantly gradable. In these exams, students can submit answers until time runs out for different numbers of points. These facets were combined effectively to create an entirely online organic chemistry course which students prefer over the in-person alternative. Lastly, there is a vision for where online organic chemistry is going and what can be done to improve education for all.

Janowicz, Philip A.

346

Asia Times Online  

NSDL National Science Digital Library

As the world's news flows increasingly from Asian nations, those people looking for a credible online source that concentrates on this region will find it in Asia Times Online. The site's front page features top stories from Asia Times journalists as well as from other online dailies and reports, including the South China Morning Post, Business Times Online, and the Australian Financial Review. The site offers separate sections for China, Southeast Asia, Japan, the Koreas, India/ Pakistan, Central Asia, and Oceania as well as departments devoted to Business Briefs, Global Economy, and Media and Industrial Technology. The entire site, including archives, is searchable.

347

Entry of Rickettsia tsutsugamushi into polymorphonuclear leukocytes.  

PubMed Central

Factors involved in the phagocytosis and entry into polymorphonuclear leukocytes (PMNs) of Rickettsia tsutsugamushi were studied by electron microscopy. R. tsutsugamushi propagated in baby hamster kidney cell cultures was incubated with guinea pig peritoneal PMNs in vitro at 35 degrees C. Structurally intact and degenerating rickettsiae were found in phagosomes, but only intact rickettsiae escaped phagosomes and specifically entered the glycogen-rich cytoplasm. The extraphagosomal cytoplasmic rickettsiae were found within 30 min after incubation; continued incubation for 4 h increased the rickettsial entry about fourfold as seen in ultrathin sections. Most rickettsiae in phagosomes were degenerating after 4 h of incubation. When incubated at 25 degrees C, no entry and very few phagocytized rickettsiae were observed. At 40 degrees C, rickettsial entry was greatly reduced, but more rickettsiae were found in phagosomes than at 35 degrees C. Preincubation of rickettsiae at 56 degrees C for 20 min with trypsin or with 2,4-dinitrophenol inhibited entry, but many rickettsiae were in phagosomes. Glutaraldehyde or formaldehyde fixation of rickettsiae and addition of 2-deoxyglucose, iodoacetamide, cytochalasin B, colchicine, or vinblastine inhibited all rickettsial uptake by PMNs. Acid phosphatase cytochemistry of infected PMNs revealed the enzyme activity only in phagosomes with degenerated rickettsiae and not in those with intact rickettsiae. These observations indicated that rickettsiae are passively phagocytized by PMNs, and only those that are intact actively escape from phagosomes, which selectively inhibits lysosomal fusion. Images

Rikihisa, Y; Ito, S

1982-01-01

348

Capacitative calcium entry mechanism in porcine oocytes.  

PubMed

The presence of the capacitative Ca(2+) entry mechanism was investigated in porcine oocytes. In vitro-matured oocytes were treated with thapsigargin in Ca(2+)-free medium for 3 h to deplete intracellular calcium stores. After restoring extracellular calcium, a large calcium influx was measured by using the calcium indicator dye fura-2, indicating capacitative Ca(2+) entry. A similar divalent cation influx could also be detected with the Mn(2+)-quench technique after inositol 1,4,5-triphosphate-induced Ca(2+) release. In both cases, lanthanum, the Ca(2+) permeable channel inhibitor, completely blocked the influx caused by store depletion. Heterologous expression of Drosophila trp in porcine oocytes enhanced the thapsigargin-induced Ca(2+) influx. Polymerase chain reaction cloning using primers that were designed based on mouse and human trp sequences revealed that porcine oocytes contain a trp homologue. As in other cell types, the capacitative Ca(2+) entry mechanism might help in refilling the intracellular stores after the release of Ca(2+) from the stores. Further investigation is needed to determine whether the trp channel serves as the capacitative Ca(2+) entry pathway in porcine oocytes or is simply activated by the endogenous capacitative Ca(2+) entry mechanism and thus contributes to Ca(2+) influx. PMID:11870073

Macháty, Zoltán; Ramsoondar, Jagdeece J; Bonk, Aaron J; Bondioli, Kenneth R; Prather, Randall S

2002-03-01

349

MCC level C formulation requirements. Entry guidance and entry autopilot, optional TAEM targeting  

NASA Technical Reports Server (NTRS)

The level C software formulations requirements for the entry guidance and the simplified autopilot to be used by the Mission Control Center (MCC) entry processor are presented. The modifications required to functionally simulate optional Terminal Area Energy Management (TAEM) targeting capability (OTT) are incorporated. Implementation of this logic in the MCC must be coordinated with flight software OTT implementation and MCC TAEM guidance OTT. The entry guidance logic is based on the orbiter avionics entry guidance software. Descriptions of the entry guidance detailed formulation requirements, the detailed autopilot formulation requirements, and the targeting routine are given. Also included are a definition of coordinate systems, a list of parameter definitions for the software formulations, and a set of formulation flow charts.

Harpold, J. C.

1980-01-01

350

Development of the Online Assessment of Athletic Training Education (OAATE) Instrument  

ERIC Educational Resources Information Center

Objective: To establish the validity and reliability of an online assessment instrument's items developed to track educational outcomes over time. Design and Setting: A descriptive study of the validation arguments and reliability testing of the assessment items. The instrument is available to graduating students enrolled in entry-level Athletic…

Carr, W. David; Frey, Bruce B.; Swann, Elizabeth

2009-01-01

351

Online Learning in Higher Education in Sub-Saharan Africa: Ghanaian University Students' Experiences and Perceptions  

ERIC Educational Resources Information Center

This study adopted a qualitative case-study approach to examine the attitudes, experiences, and perceptions of undergraduate students who were enrolled in an online, collaborative learning course at a Ghanaian private university. Data sources included surveys, student and instructor journal entries, email records, individual interviews, and…

Asunka, Stephen

2008-01-01

352

Mathematics and Online Learning Experiences: A Gateway Site for Engineering Students  

ERIC Educational Resources Information Center

This paper focuses on the preliminary design of a multifaceted computer-based mathematics resource for undergraduate and pre-entry engineering students. Online maths resources, while attractive in their flexibility of delivery, have seen variable interest from students and teachers alike. Through student surveys and wide consultations, guidelines…

Masouros, Spyridon D.; Alpay, Esat

2010-01-01

353

Conformational Coupling: A Physiological Calcium Entry Mechanism  

NSDL National Science Digital Library

The entry of external Ca2+ that is activated by inositol 1,4,5-trisphosphate (IP3) may occur through a conformation coupling mechanism. IP3 receptors in the endoplasmic reticulum located in a junctional zone make contact with entry channels in the plasma membrane. IP3 may act directly to stimulate this coupling complex or IP3 could act indirectly by stimulating uncoupled IP3Rs in the vicinity of the junctional zone to induce a localized depletion of the ER store to switch on a store-operated mechanism. At physiological agonist concentrations, the earliest Ca2+ response to receptor activation may be the stimulation of entry, which is then responsible for charging up the internal store to prime the IP3Rs for the large-scale regenerative release of Ca2+ that occurs during each spike.

Michael Berridge (The Babraham Institute;Calcium Group of Laboratory of Molecular Signalling REV)

2004-07-27

354

Earth Entry Vehicle for Mars Sample Return  

NASA Technical Reports Server (NTRS)

The driving requirement for design of a Mars Sample return mission is assuring containment of the returned samples. The impact of this requirement on developmental costs, mass allocation, and design approach of the Earth Entry Vehicle is significant. A simple Earth entry vehicle is described which can meet these requirements and safely transport the Mars Sample Return mission's sample through the Earth's atmosphere to a recoverable location on the surface. Detailed analysis and test are combined with probabilistic risk assessment to design this entirely passive concept that circumvents the potential failure modes of a parachute terminal descent system. The design also possesses features that mitigate other risks during the entry, descent, landing and recovery phases. The results of a full-scale drop test are summarized.

Mitcheltree, R. A.; Braun, R. D.; Hughes. S. J.; Simonsen, L. C.

2000-01-01

355

Cubesat Application for Planetary Entry Missions (CAPE)  

NASA Technical Reports Server (NTRS)

The Cubesat Application for Planetary Entry Missions (CAPE) concept describes a high-performing Cubesat system which includes a propulsion module and miniaturized technologies capable of surviving atmospheric entry heating, while reliably transmitting scientific and engineering data. The Micro Return Capsule 2 (MIRKA2) is CAPE’s first planetary entry probe flight prototype. Within this context, this paper summarizes CAPE’s configuration and typical operational scenario. It also summarizes MIRKA2’s design and basic aerodynamic characteristics, and discusses potential challenges drawn from the experience of missions such as Stardust and MUSES-C. CAPE not only opens the door to new planetary mission capabilities, it also offers relatively low-cost opportunities especially suitable to university participation.

Esper, Jaime; Baumann, Jean-Pierre; Herdrich, Georg

2013-01-01

356

Entry and Landing Probe for Titan  

NASA Technical Reports Server (NTRS)

Results of a recent study of entry and landing probes for the exploration of Titan are presented. The probes considered were based on a wide range of exploration mission possibilities. They included: an atmospheric science probe, an intermediate atmospheric and limited surface science probe, and a larger atmospheric and expanded surface science probe. Because of lower gravity on Titan and its atmospheric characteristics, the entry environment is less severe than that of Mars. However, the large uncertainties in the current definition of the atmosphere and the uncertainties in Titan's surface characteristics have required tradeoffs of various combinations of entry and descent shapes and hard lander configurations. Results show that all probe classes are feasible without major developments.

Murphy, J. P.; Cuzzi, J. N.; Butts, A. J.; Carroll, P. C.

1981-01-01

357

Survey of planetary entry guidance algorithms  

NASA Astrophysics Data System (ADS)

This comprehensive literature survey reviews past and present planetary entry guidance algorithms. The algorithms are categorized based on the vehicle L/D and the planetary atmosphere that the vehicle is entering. Each algorithm is described based on the guidance type, the guidance formulation, and the inclusion of aerothermal parameters. An analysis was completed defining the performance of each guidance algorithm relative to one another within its specific category. Finally, an overall assessment was made regarding the state-of-the-art in spacecraft entry guidance.

D?Souza, Sarah N.; Sarigul-Klijn, Nesrin

2014-07-01

358

A mouse model for HIV-1 entry  

PubMed Central

Passive transfer of neutralizing antibodies against HIV-1 can prevent infection in macaques and seems to delay HIV-1 rebound in humans. Anti-HIV antibodies are therefore of great interest for vaccine design. However, the basis for their in vivo activity has been difficult to evaluate systematically because of a paucity of small animal models for HIV infection. Here we report a genetically humanized mouse model that incorporates a luciferase reporter for rapid quantitation of HIV entry. An antibody’s ability to block viral entry in this in vivo model is a function of its bioavailability, direct neutralizing activity, and effector functions.

Pietzsch, John; Gruell, Henning; Bournazos, Stylianos; Donovan, Bridget M.; Klein, Florian; Diskin, Ron; Seaman, Michael S.; Bjorkman, Pamela J.; Ravetch, Jeffrey V.; Ploss, Alexander; Nussenzweig, Michel C.

2012-01-01

359

DSMC simulations of OREX entry conditions  

NASA Technical Reports Server (NTRS)

Results of direct simulation Monte Carlo (DSMC) solutions are presented for the Japanese Orbital Reentry Experiment (OREX) vehicle, a 50 deg half-angle spherically blunted cone with a nose radius of 1.35 m and a base diameter of 3.4 m. The flow conditions simulated are those for entry into the Earth's atmosphere at a nominal velocity of about 7.4 km/s and zero incidence. Calculations are made for the higher altitude portion of entry, encompassing the transitional flow regime (altitudes of 200 to 80 km). Comparisons with flight measured values are made for axial acceleration, surface pressure, and stagnation point heating.

Moss, James N.; Gupta, Roop N.; Price, Joseph M.

1996-01-01

360

Online Collaboration: Curriculum Unbound!  

ERIC Educational Resources Information Center

Freed from the nuisances of paper-based methods, districts are making creative use of digital tools to move their curricular documents online, where educators can collaborate on course development and lesson planning. Back in 2003, Amarillo Independent School District (Texas) had begun using the Blackboard Content System to provide lessons online.…

Waters, John K.

2007-01-01

361

Online Videoconferencing Products: Update  

ERIC Educational Resources Information Center

Software allowing real-time online video connectivity is rapidly evolving. The ability to connect students, staff, and guest speakers instantaneously carries great benefits for the online distance education classroom. This evaluation report compares four software applications at opposite ends of the cost spectrum: "DimDim", "Elluminate VCS",…

Burton, Douglas; Kitchen, Tim

2011-01-01

362

Authoritative Online Editions  

ERIC Educational Resources Information Center

In this article, the author discusses how it is now very easy for anyone to find formerly hard-to-find books such as the works of Walt Whitman with the help of online booksellers. The author also describes the efforts made by various institutions to produce online editions of the works of major writers. One such prominent project is the archive…

Benton, Thomas H.

2007-01-01

363

Online Search Interface Design.  

ERIC Educational Resources Information Center

Discusses the design of interfaces for online systems and suggests requirements that must be met to offer maximum aid to inexperienced users. Highlights include the online search process, user data, query processing, database descriptors, semantic links, multilingual processing, search strategies, and distributed systems. A 20-page bibliography…

Vickery, Brian; Vickery, Alina

1993-01-01

364

Learning & Memory Online  

NSDL National Science Digital Library

Cold Spring Harbor Laboratory Press has placed online the journal Learning & Memory, an interdisciplinary journal dedicated to research on the neurobiology of learning and memory. Online full-text content begins with the May/June 1998 issue; abstracts begin with the September/October, 1995 issue. The journal is produced in conjunction with Stanford University's HighWire Press.

1998-01-01

365

Adolescent Online Victimization  

ERIC Educational Resources Information Center

Online victimization is a concern among many who work with youth. This article reviews the latest research on online victimization then promotes honest dialogue, personal responsibility of the youth, and proper reporting actions as strategies to reduce this type of victimization. (Contains 1 figure and 1 table.)

Young, Adena; Young, Atrisha; Fullwood, Harry

2007-01-01

366

Techtalk: Online Developmental Education.  

ERIC Educational Resources Information Center

Examines the current status of online developmental courses. Features descriptions of programs at several colleges, including the names and e-mail addresses of individuals to contact for further information. Describes the hardware requirements for offering online courses as well as how such courses typically operate. (MAB)

Broderick, Bill; Caverly, David C.

1996-01-01

367

Online Help Supports Performance.  

ERIC Educational Resources Information Center

Discussion of online help for performance support systems focuses on how online help has expanded to allow the design of more effective support systems. Explains embedded help, interactive help, intelligent agents, bubble help (tool tips), "What's This?" help, and expanded help content. (LRW)

Miller, Bill; McCandless, Pat

1999-01-01

368

Physical Geology Lecture Online  

NSDL National Science Digital Library

Maintained by Dr. Pamela J. W. Gore of Georgia Perimeter College, the Physical Geology Lecture Online is a complete online interactive course. Through descriptions, photographs, and illustrations, students can learn the basics of minerals, rocks, volcanoes, soils, earthquakes, erosion, mass wasting, and more. Although the site was created for a specific college course, any student can browse and learn about the many topics covered.

Gore, Pamela J.

1994-01-01

369

Online medical information services.  

PubMed

The author provides a comprehensive overview of online medical information services that can be accessed by personal computer users over telephone lines. The article encompasses the reasons for online database access, equipment considerations, and structure and sources of database information. Tips on search strategy and resources for increasing database search proficiency are also included. PMID:3906725

Bickers, R G

1985-09-01

370

Online Knowledge Communities.  

ERIC Educational Resources Information Center

This paper describes the concept of online knowledge communities. The concept is defined, and six qualities of online communities are identified: members (user roles are clearly defined); mission (generally accepted goal-statement, ideas, beliefs, etc.); commitment (members give their loyalty to the mission); social interaction (frequent…

de Vries, Sjoerd; Bloemen, Paul; Roossink, Lonneke

371

Children's Online Privacy.  

ERIC Educational Resources Information Center

The first federal Internet privacy law (the Children's Online Privacy Protection Act) provides safeguards for children by regulating collection of their personal information. Unfortunately, teens are not protected. Legislation is pending to protect children from online marketers such as ZapMe! Interactive technologies require constant vigilance.…

Aidman, Amy

2000-01-01

372

Serving the Online Learner  

ERIC Educational Resources Information Center

Systems and services for recruiting, advising, and support of online students have seldom been at the top of the list when planning online and distance learning programs. That is now changing: Forces pushing advising and support services into the foreground include recognition of the student learner as "customer" and the increasing expectations…

Boettcher, Judith V.

2007-01-01

373

COSEE West Online Education  

NSDL National Science Digital Library

This site features online professional development courses offered by the COSEE (Center for Ocean Sciences Education Excellence) West and College of Exploration. The site features workshop information, as well as access to online presentations and the College of Exploration's virtual campus. Registration is required to access the education information, but is free of charge.

374

Online Comes of Age.  

ERIC Educational Resources Information Center

Reviews the historical development of online information in libraries, including computers, software, and networks. Highlights include quotes from leaders in the field; the end-user movement; commercial products from vendors; the spread of the Internet and its effects on online companies and searchers; options on the World Wide Web; and future…

O'Leary, Mick

1997-01-01

375

Facilitating Online Discussions Effectively  

ERIC Educational Resources Information Center

This article presents a synthesis of the theoretical and research literature on facilitating asynchronous online discussions effectively. Online courses need to be designed so that they provide motivation for students to engage in productive discussions and clearly describe what is expected, perhaps in the form of a discussion rubric.…

Rovai, Alfred P.

2007-01-01

376

Online Dynamic Graph Drawing  

Microsoft Academic Search

Abstract, This paper presents an algorithm for drawing a sequence of graphs online. The algorithm strives to maintain the global structure of the graph and, thus, the user's mental map while allowing arbitrary modifications between consecutive layouts. The algorithm works online and uses various execution culling methods in order to reduce the layout time and handle large dynamic graphs. Techniques

Yaniv Frishman; Ayellet Tal

2008-01-01

377

Elderly Adi Women of Arunachal Pradesh: "Living Encyclopedias" and Cultural Refugia in Biodiversity Conservation of the Eastern Himalaya, India  

NASA Astrophysics Data System (ADS)

Elderly women of a particular socioecological system are considered to be "living encyclopedias" in biocultural knowledge systems. These women play a pivotal role in retaining and passing on biodiversity-related traditional knowledge to the next generations. Unfortunately the fast changing sociocultural values and the impact of modernity have rendered their knowledge somewhat less valuable and they are being treated as "cultural refugia." Our study on the importance of these women in the conservation of indigenous biodiversity was conducted in 14 randomly selected villages dominated by the Adi tribe of East Siang District, Arunachal Pradesh (northeast India). Data were collected from 531 women (381 elderly and 150 young to middle aged) during 2003-2008 using conventional social science methods and participatory rural appraisal. One innovative method, namely "recipe contest," was devised to mobilize Adi women of each village in order to energies them and explore their knowledge relating to traditional foods, ethnomedicines, and conservation of indigenous biodiversity. Results indicated that 55 plant species are being used by elderly Adi women in their food systems, while 34 plant species are integral parts of ethnomedicinal practices. These women identified different plant species found under multistory canopies of community forests. Elderly women were particularly skilled in preparing traditional foods including beverages and held significantly greater knowledge of indigenous plants than younger women. Lifelong experiences and cultural diversity were found to influence the significance of biodiversity use and conservation. The conservation of biodiversity occurs in three different habitats: jhum lands (shifting cultivation), Morang forest (community managed forests), and home gardens. The knowledge and practice of elderly women about habitats and multistory vegetations, regenerative techniques, selective harvesting, and cultivation practices contribute significantly to food and livelihood security while sustaining an array of threatened plant species. Basically, knowledge of elderly women on using biodiversity in food and medicinal systems was found in three categories namely: "individual," "community," and "refined." We identified a need to develop holistic policies to recognize and integrate knowledge and practices of elderly women with local level of planning on sustainable conservation of biodiversity as well as community-based adaptations.

Singh, Ranjay K.; Rallen, Orik; Padung, Egul

2013-09-01

378

Elderly Adi women of Arunachal Pradesh: "living encyclopedias" and cultural refugia in biodiversity conservation of the Eastern Himalaya, India.  

PubMed

Elderly women of a particular socioecological system are considered to be "living encyclopedias" in biocultural knowledge systems. These women play a pivotal role in retaining and passing on biodiversity-related traditional knowledge to the next generations. Unfortunately the fast changing sociocultural values and the impact of modernity have rendered their knowledge somewhat less valuable and they are being treated as "cultural refugia." Our study on the importance of these women in the conservation of indigenous biodiversity was conducted in 14 randomly selected villages dominated by the Adi tribe of East Siang District, Arunachal Pradesh (northeast India). Data were collected from 531 women (381 elderly and 150 young to middle aged) during 2003-2008 using conventional social science methods and participatory rural appraisal. One innovative method, namely "recipe contest," was devised to mobilize Adi women of each village in order to energies them and explore their knowledge relating to traditional foods, ethnomedicines, and conservation of indigenous biodiversity. Results indicated that 55 plant species are being used by elderly Adi women in their food systems, while 34 plant species are integral parts of ethnomedicinal practices. These women identified different plant species found under multistory canopies of community forests. Elderly women were particularly skilled in preparing traditional foods including beverages and held significantly greater knowledge of indigenous plants than younger women. Lifelong experiences and cultural diversity were found to influence the significance of biodiversity use and conservation. The conservation of biodiversity occurs in three different habitats: jhum lands (shifting cultivation), Morang forest (community managed forests), and home gardens. The knowledge and practice of elderly women about habitats and multistory vegetations, regenerative techniques, selective harvesting, and cultivation practices contribute significantly to food and livelihood security while sustaining an array of threatened plant species. Basically, knowledge of elderly women on using biodiversity in food and medicinal systems was found in three categories namely: "individual," "community," and "refined." We identified a need to develop holistic policies to recognize and integrate knowledge and practices of elderly women with local level of planning on sustainable conservation of biodiversity as well as community-based adaptations. PMID:23824078

Singh, Ranjay K; Rallen, Orik; Padung, Egul

2013-09-01

379

Teaching Astronomy Online  

NASA Astrophysics Data System (ADS)

This article is intended to provide an overview of the practical, pedagogical, and philosophical considerations in designing a Web-based astronomy course, and to demonstrate the educational benefits that such online courses can afford students. Because online students need to take more responsibility for their learning, faculty must make course expectations extremely clear. Online education allows for increased student participation and equal access to college by such groups as the military, the handicapped, full-time employees, and rural and senior citizens. Teaching the sciences online--especially astronomy--gives students more time to think critically about new information. This article also includes tools, checklists, and resources helpful for introducing faculty to online course development in astronomy.

Radnofsky, Mary L.; Bobrowsky, Matthew

380

31 CFR 363.201 - What other regulations govern book-entry marketable book-entry Treasury bills, notes, and bonds?  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false What other regulations govern book-entry marketable book-entry Treasury bills, notes, and bonds? 363...Securities § 363.201 What other regulations govern book-entry marketable book-entry Treasury bills,...

2013-07-01

381

Radiation and critical shocks in atmospheric entry  

SciTech Connect

Sub- and supercritical shock waves are produced during atmospheric entry. The radiation efficiency of the former increases strongly with velocity and altitude; that of the latter increases with altitude, but decreases with supercritical velocities. These efficiencies shift the region of maximum radiation one to two scale heights higher and decrease overall radiation efficiency.

Canavan, G.H.

1997-12-01

382

Patent Settlements as a Barrier to Entry  

Microsoft Academic Search

We formulate a model of entry with two incumbent firms—a patent holder and an infringer—and a potential entrant, with asymmetric information about the validity of the infringed patent (patent strength) between incumbent firms and the entrant. Within this framework we show that patent settlements between the incumbent firms can be mutually beneficial even when the cost of trial is zero

Anne Duchêne; Konstantinos Serfes

2012-01-01

383

System for Histogram Entry, Retrieval, and Plotting.  

National Technical Information Service (NTIS)

This manual describes the systems for producing histograms and dot plots that were designed for use in connection with the Q general-purpose data-acquisition system. These systems allow for the creation of histograms; the entry, retrieval, and plotting of...

M. Kellogg J. M. Gallup S. Shlaer N. Spencer

1977-01-01

384

TEST CELL STUDIES OF RADON ENTRY  

EPA Science Inventory

The report gives results of a study to contrast the effectiveness of slab-in-stem wall (SSW) with floating slab (FS) construction practices, to measure radon transport and entry for model testing, to develop protocols relevant to depressurized radon measurements, and to determine...

385

Alphavirus entry: NRAMP leads the way.  

PubMed

The identity of the receptors that mediate alphavirus entry into host cells has been elusive. In this issue of Cell Host & Microbe, Rose et al. (2011) use a Drosophila RNAi screen to identify NRAMP, an iron transporter with 12 transmembrane domains, as a receptor for Sindbis virus in both insect and mammalian cells. PMID:21843864

Stiles, Katie M; Kielian, Margaret

2011-08-18

386

76 FR 15841 - Entry of Merchandise  

Federal Register 2010, 2011, 2012, 2013

...DEPARTMENT OF HOMELAND SECURITY Bureau of Customs and Border Protection DEPARTMENT OF THE TREASURY 19 CFR Part 141 Entry of Merchandise CFR Correction In Title 19 of the Code of Federal Regulations, Parts 141 to 199, revised as of April 1, 2010, on...

2011-03-22

387

Password Entry Scheme Resistant to Eavesdropping  

Microsoft Academic Search

We propose an authentication scheme resistant to eavesdropping attacks. Users select an alphanumeric password with a length of 9-15 symbols. They can use this password in the traditional manner from a secure client. The same password can also be used from a non-secure client in a manner highly resistant to eavesdropping attacks. Although more complex than traditional password entry, in

Bogdan Hoanca; Kenrick J. Mock

2008-01-01

388

Phrase sets for evaluating text entry techniques  

Microsoft Academic Search

In evaluations of text entry methods, participants enter phrases of text using a technique of interest while performance data are collected. This paper describes and publishes (via the internet) a collection of 500 phrases for such evaluations. Utility programs are also provided to compute statistical properties of the phrase set, or any other phrase set. The merits of using a

I. Scott MacKenzie; R. William Soukoreff

2003-01-01

389

Virus entry: molecular mechanisms and biomedical applications  

Microsoft Academic Search

Viruses have evolved to enter cells from all three domains of life — Bacteria, Archaea and Eukaryotes. Of more than 3,600 known viruses, hundreds can infect human cells and most of those are associated with disease. To gain access to the cell interior, animal viruses attach to host-cell receptors. Advances in our understanding of how viral entry proteins interact with

Dimiter S. Dimitrov

2004-01-01

390

Entry-Level Competencies for Instructional Developers.  

ERIC Educational Resources Information Center

A survey of business and industrial training team supervisors and members was undertaken in order to identify the most important entry-level competencies required of instructional development specialists in a variety of business and industrial settings. The study sample of 300 was randomly selected from the approximately 2,850 members of the…

Trimby, Madeline J.

391

Thinking and Reading for Entry Level Workers.  

ERIC Educational Resources Information Center

A pilot project demonstrated that cooperative training programs are effective and cost efficient for small businesses. Common entry-level reading and thinking tasks were identified in a variety of occupational areas. Five growing occupational areas were identified: industrial/machine operator; health care; food preparation; hotel/hospitality; and…

Allentown Literacy Council, PA.

392

History of early Organizer Experiments  

NSDL National Science Digital Library

An online encyclopedia entry about the research and publication of the paper entitled: ÃÂVersuche zur Analyse der Induktionsmittel in der EmbryonalentwicklungÃÂ [Attempts to analyse the Organizer of the Embryo] and links to other articles about these associates and their historic work.

Adam R Navis (Arizona State University Center for Biology and Society)

2011-09-20

393

Shuttle Entry Imaging Using Infrared Thermography  

NASA Technical Reports Server (NTRS)

During the Columbia Accident Investigation, imaging teams supporting debris shedding analysis were hampered by poor entry image quality and the general lack of information on optical signatures associated with a nominal Shuttle entry. After the accident, recommendations were made to NASA management to develop and maintain a state-of-the-art imagery database for Shuttle engineering performance assessments and to improve entry imaging capability to support anomaly and contingency analysis during a mission. As a result, the Space Shuttle Program sponsored an observation campaign to qualitatively characterize a nominal Shuttle entry over the widest possible Mach number range. The initial objectives focused on an assessment of capability to identify/resolve debris liberated from the Shuttle during entry, characterization of potential anomalous events associated with RCS jet firings and unusual phenomenon associated with the plasma trail. The aeroheating technical community viewed the Space Shuttle Program sponsored activity as an opportunity to influence the observation objectives and incrementally demonstrate key elements of a quantitative spatially resolved temperature measurement capability over a series of flights. One long-term desire of the Shuttle engineering community is to calibrate boundary layer transition prediction methodologies that are presently part of the Shuttle damage assessment process using flight data provided by a controlled Shuttle flight experiment. Quantitative global imaging may offer a complementary method of data collection to more traditional methods such as surface thermocouples. This paper reviews the process used by the engineering community to influence data collection methods and analysis of global infrared images of the Shuttle obtained during hypersonic entry. Emphasis is placed upon airborne imaging assets sponsored by the Shuttle program during Return to Flight. Visual and IR entry imagery were obtained with available airborne imaging platforms used within DoD along with agency assets developed and optimized for use during Shuttle ascent to demonstrate capability (i.e., tracking, acquisition of multispectral data, spatial resolution) and identify system limitations (i.e., radiance modeling, saturation) using state-of-the-art imaging instrumentation and communication systems. Global infrared intensity data have been transformed to temperature by comparison to Shuttle flight thermocouple data. Reasonable agreement is found between the flight thermography images and numerical prediction. A discussion of lessons learned and potential application to a potential Shuttle boundary layer transition flight test is presented.

Horvath, Thomas; Berry, Scott; Alter, Stephen; Blanchard, Robert; Schwartz, Richard; Ross, Martin; Tack, Steve

2007-01-01

394

Tripal: a construction toolkit for online genome databases.  

PubMed

As the availability, affordability and magnitude of genomics and genetics research increases so does the need to provide online access to resulting data and analyses. Availability of a tailored online database is the desire for many investigators or research communities; however, managing the Information Technology infrastructure needed to create such a database can be an undesired distraction from primary research or potentially cost prohibitive. Tripal provides simplified site development by merging the power of Drupal, a popular web Content Management System with that of Chado, a community-derived database schema for storage of genomic, genetic and other related biological data. Tripal provides an interface that extends the content management features of Drupal to the data housed in Chado. Furthermore, Tripal provides a web-based Chado installer, genomic data loaders, web-based editing of data for organisms, genomic features, biological libraries, controlled vocabularies and stock collections. Also available are Tripal extensions that support loading and visualizations of NCBI BLAST, InterPro, Kyoto Encyclopedia of Genes and Genomes and Gene Ontology analyses, as well as an extension that provides integration of Tripal with GBrowse, a popular GMOD tool. An Application Programming Interface is available to allow creation of custom extensions by site developers, and the look-and-feel of the site is completely customizable through Drupal-based PHP template files. Addition of non-biological content and user-management is afforded through Drupal. Tripal is an open source and freely available software package found at http://tripal.sourceforge.net. PMID:21959868

Ficklin, Stephen P; Sanderson, Lacey-Anne; Cheng, Chun-Huai; Staton, Margaret E; Lee, Taein; Cho, Il-Hyung; Jung, Sook; Bett, Kirstin E; Main, Doreen

2011-01-01

395

Encyclopaedia of the Orient  

NSDL National Science Digital Library

Edited by Tore Kjeilen, a Norwegian scholar, the Encyclopaedia of the Orient is an online reference work that provides information on North Africa and the Middle East, encompassing all cultures and nations from "Mauritania in the west and Iran in the east, Turkey in the north and Sudan in south." The encyclopedia, which is updated weekly, contains 500 compendious entries, from Abadan to Zurvanism, comprised of original articles, photographs, graphics, music clips, and pronunciation clips. Users may search the encyclopedia by keyword or browse the entries via the alphabetical index.

396

Science Project Encyclopedia  

NSDL National Science Digital Library

This site is designed to help students choose and prepare a science fair research project. Topics include an overview of science projects, controlled experiments, the scientific method, and reasons for planning and conducting a project. Successive pages take the user through the process of getting started, choosing a project, planning the experiment and a display for the science fair, rules and judging, and policies on the use of human subjects, animals, and pathogens and other potentially harmful agents in science fair projects. There is a gallery of photographs of prize-winning and participating science fair project displays from a Florida state science and engineering fair. A link is supplied to a page of the Society for Science and the Public site supplying forms and documents for entering the Intel International Science and Engineering Fair and for entering local and affiliated fairs.

Charles D. Lawrence, Laurence E.

2004-08-27

397

The Encyclopedia Arctica  

NSDL National Science Digital Library

Back in 1947, the Office of Naval Research in the Department of the Navy began an ambitious 20-volume reference work on the northern Arctic and subarctic regions. Four years later, the Navy withdrew its support after 3 or 4 million words had been written. The editor of this tremendous undertaking was the Canadian Arctic explorer and director of Polar Studies at Dartmouth College, Vilhjalmur Stefansson. Recently, the Dartmouth College Library digitized materials from this compendium, and they are now available on this site. Here visitors will find the "Table of Contents", which allows them to delve into subtopics like "Physiography of Alaska", "Physics of Ground Frost", and dozens of other related topics. The documents here are the original typewritten pages, and visitors can browse around at their leisure.

398

Encyclopedia of Software Components.  

National Technical Information Service (NTIS)

Intelligent browsing through a collection of reusable software components is facilitated with a computer having a video monitor and a user input interface such as a keyboard or a mouse for transmitting user selections, by presenting a picture of encyclope...

L. Vanwarren B. C. Beckman

1991-01-01

399

Encyclopedia of Life  

NSDL National Science Digital Library

A webpage for every organism on earth is the goal of this site, which was initially funded in 2007 by the MacArthur Foundation and the Sloan Foundation. To "learn how to navigate EOL, search for content, customize your experience, and explore pages..." visitors can start with the tab "Using the Site" at the top of the page. Here, there is a video tour on general "Navigation" of the site and instructions on how specifically to use the "Species Pages". Users can check out the FAQs section under the same tab for more help. Visitors can select the "Language" tab at the top of the page to view the site in English, Spanish, Russian, Ukranian, German, or French. In the "About EOL" tab on the far upper right hand side of the page, visitors can check out the "Content Partners" link about halfway down the menu. There are over two dozen partners and links to their websites listed, including the Nearctic Spider Database, Mushroom Observer, FishBase, and AntWeb.

400

19 CFR 18.11 - Entry; classes of goods for which entry is authorized; form used.  

Code of Federal Regulations, 2010 CFR

...determine the contents of the shipment. Such merchandise covered by quarantines and regulations administered by the Bureau of Entomology and Plant Quarantine shall be forwarded under such entries only upon written permission of or under regulations...

2010-04-01

401

19 CFR 18.11 - Entry; classes of goods for which entry is authorized; form used.  

Code of Federal Regulations, 2010 CFR

...determine the contents of the shipment. Such merchandise covered by quarantines and regulations administered by the Bureau of Entomology and Plant Quarantine shall be forwarded under such entries only upon written permission of or under regulations...

2009-04-01

402

19 CFR 18.11 - Entry; classes of goods for which entry is authorized; form used.  

Code of Federal Regulations, 2013 CFR

...approximate correctness of the value and quantity stated in the entry (e.g. Detailed quantity description, 14 cartons, 2 dozen per carton); Detailed description of the textiles or textile products including type of commodity and chief...

2013-04-01

403

The Online Books Page  

NSDL National Science Digital Library

Hosted by the University of Pennsylvania Library, the Online Books Page Web site "facilitates access to books that are freely readable over the Internet...and aims to encourage the development of such online books, for the benefit and edification of all." The over 18,000 listings can be searched or browsed by author, title, and subject, of which every major physical science subject is represented. Each listing is linked to an outside Web site, making its availability unpredictable, but the shear number of books that are accessible make the Online Books Page a great resource.

1993-01-01

404

The EMBO Journal Online  

NSDL National Science Digital Library

EMBO and Oxford University Press are offering the full content of each issue online, including all figures and tables, for a free trial period running through 1997. After that, it will be available to subscribers. Currently, full-text versions are only available from January 1997, but these archived issues will expand with each new issue of the Journal. Tables of contents and abstracts of the 1996 issues are also currently available online. The full text is searchable by author and keyword, and references include hypertext links to Medline and to other online journals.

1996-01-01

405

Variable Entry Biased Paracentric Hemispherical Deflector: Experimental results on energy resolution for different entry positions  

NASA Astrophysics Data System (ADS)

A new hemispherical deflector analyzer (HDA) which is designed for electron energy analysis in atomic collisions has been constructed and tested. Using the crossed beam technique at the electron spectrometer, test measurements were performed for electron beam (200 eV) – Helium atoms interactions. These first experimental results show that the paracentric entries give almost twice as good resolution as that for the conventional entry. Supporting simulations of the entire lens+HDA spectrometer are found in relatively good agreement with experiment.

Dogan, Mevlut; Ulu, Melike; Gennerakis, Giannis; Zouros, Theo J. M.

2014-04-01

406

Titan Explorer Entry, Descent and Landing Trajectory Design.  

National Technical Information Service (NTIS)

The Titan Explorer mission concept includes an orbiter, entry probe and inflatable airship designed to take remote and in-situ measurements of Titan's atmosphere. A modified entry, descent and landing trajectory at Titan that incorporates mid-air airship ...

J. L. Fisher M. K. Lockwood R. E. Lindberg

2006-01-01

407

19 CFR 147.44 - Entry for another fair.  

Code of Federal Regulations, 2010 CFR

... 2009-04-01 false Entry for another fair. 147.44 Section 147.44 Customs Duties...DEPARTMENT OF THE TREASURY (CONTINUED) TRADE FAIRS Disposition of Articles Entered for Fairs § 147.44 Entry for another fair....

2009-04-01

408

19 CFR 147.44 - Entry for another fair.  

Code of Federal Regulations, 2010 CFR

... 2010-04-01 false Entry for another fair. 147.44 Section 147.44 Customs Duties...DEPARTMENT OF THE TREASURY (CONTINUED) TRADE FAIRS Disposition of Articles Entered for Fairs § 147.44 Entry for another fair....

2010-04-01

409

32 CFR 525.4 - Entry authorization (policy).  

Code of Federal Regulations, 2013 CFR

...possession firearms or cameras. (3) Entry authorizations...is consistent with the security requirements pertaining...possession firearms or cameras. (3) Entry authorizations...is consistent with the security requirement...

2013-07-01

410

19 CFR 142.3a - Entry numbers.  

Code of Federal Regulations, 2013 CFR

... (b) Format. The following format, including hyphens, must be used when showing the entry number: XXX-NNNNNNN-N XXX represents an entry filer code assigned by CBP, NNNNNNN is a unique number which is assigned by the broker...

2013-04-01

411

46 CFR 14.305 - Entries in continuous discharge book.  

Code of Federal Regulations, 2013 CFR

... false Entries in continuous discharge book. 14.305 Section 14.305 Shipping...14.305 Entries in continuous discharge book. If the merchant mariner holds a continuous discharge book, the master or individual in charge of...

2013-10-01

412

In Situ Magnetohydrodynamic Energy Generation for Planetary Entry Vehicles  

NASA Astrophysics Data System (ADS)

This work aims to study the suitability of multi-pass entry trajectories for harnessing of vehicle kinetic energy through magnetohydrodynamic power generation from the high temperature entry plasma. Potential mission configurations are analyzed.

Ali, H. K.; Braun, R. D.

2014-06-01

413

15 CFR 2011.103 - Entry into the United States.  

Code of Federal Regulations, 2010 CFR

...2009-01-01 false Entry into the United States. 2011.103 Section 2011.103 Commerce and Foreign Trade Regulations Relating...AND MOLASSES Certificate of Quota Eligibility § 2011.103 Entry into the United States. (a)...

2009-01-01

414

15 CFR 2011.103 - Entry into the United States.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 false Entry into the United States. 2011.103 Section 2011.103 Commerce and Foreign Trade Regulations Relating...AND MOLASSES Certificate of Quota Eligibility § 2011.103 Entry into the United States. (a)...

2010-01-01

415

46 CFR 131.630 - Entries in official logbooks.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Entries in official logbooks. 131.630 Section 131.630 Shipping COAST GUARD, DEPARTMENT OF HOMELAND... OFFSHORE SUPPLY VESSELS OPERATIONS Logs § 131.630 Entries in official logbooks. On...

2013-10-01

416

View of entry portal into bomb shelter. Wood blocking has ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

View of entry portal into bomb shelter. Wood blocking has been installed to prevent entry, view facing north - U.S. Naval Base, Pearl Harbor, Splinterproof Shelter, Seventh Street between Avenues E & G, Pearl City, Honolulu County, HI

417

View of entry portal into bomb shelter. Wood blocking has ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

View of entry portal into bomb shelter. Wood blocking has been installed to prevent entry, view facing northwest - U.S. Naval Base, Pearl Harbor, Splinterproof Shelter, Seventh Street between Avenues E & G, Pearl City, Honolulu County, HI

418

Stair and entry room, bunkhouse, first floor interior. Door from ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

Stair and entry room, bunkhouse, first floor interior. Door from entry hall leads to toilets and bathing rooms. A coat and hat rack is on each side of the door. - Sespe Ranch, Bunkhouse, 2896 Telegraph Road, Fillmore, Ventura County, CA

419

36 CFR 13.1160 - Restrictions on vessel entry.  

Code of Federal Regulations, 2013 CFR

... 2013-07-01 false Restrictions on vessel entry. 13.1160 Section 13.1160 ...Regulations-Glacier Bay National Park and Preserve Vessel Permits § 13.1160 Restrictions on vessel entry. The superintendent will allow...

2013-07-01

420

19 CFR 128.25 - Formal entry procedures.  

Code of Federal Regulations, 2013 CFR

...25 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY; DEPARTMENT OF THE TREASURY EXPRESS CONSIGNMENTS Procedures § 128.25 Formal entry procedures. Formal entry, as provided for under 19...

2013-04-01

421

50 CFR 679.83 - Rockfish Program entry level fishery.  

Code of Federal Regulations, 2010 CFR

... false Rockfish Program entry level fishery. 679...CONSERVATION AND MANAGEMENT, NATIONAL...CONTINUED) FISHERIES OF THE EXCLUSIVE...ALASKA Rockfish Program...open the rockfish entry level fishery if he deems...or other management...

2010-10-01

422

50 CFR 679.83 - Rockfish Program entry level fishery.  

Code of Federal Regulations, 2010 CFR

... false Rockfish Program entry level fishery. 679...CONSERVATION AND MANAGEMENT, NATIONAL...CONTINUED) FISHERIES OF THE EXCLUSIVE...ALASKA Rockfish Program...open the rockfish entry level fishery if he deems...or other management...

2009-10-01

423

9 CFR 93.806 - Animals refused entry.  

Code of Federal Regulations, 2010 CFR

...PRODUCTS; REQUIREMENTS FOR MEANS OF CONVEYANCE AND SHIPPING CONTAINERS Elephants, Hippopotami, Rhinoceroses, and Tapirs § 93.806 Animals refused entry. Any elephant, hippopotamus, rhinoceros, or tapir refused entry into...

2010-01-01

424

Online TESL/TEFL Training.  

ERIC Educational Resources Information Center

Discusses distance learning with a focus on online learning, which is growing in popularity at a faster rate than other types of programs. Looks at the advantages and disadvantages of online learning, the future of online learning, and specifically TESOL training online. (Author/VWL)

Nixon, Thomas

2003-01-01

425

The Online Learning Definitions Project  

ERIC Educational Resources Information Center

The mission of the International Association for K-12 Online Learning (iNACOL) is to ensure all students have access to a world-class education and quality online learning opportunities that prepare them for a lifetime of success. "The Online Learning Definitions Project" is designed to provide states, districts, online programs, and other…

International Association for K-12 Online Learning, 2011

2011-01-01

426

Online Statistical Tools  

NSDL National Science Digital Library

This collection of online analysis tools allows users to compute probabilities from various distributions and to generate random numbers. Other tools include probability and Bayes' rule calculators and an event counter. Each tool provides instructions and review materials.

Berman, Harvey

2009-08-07

427

LINK: Online First  

NSDL National Science Digital Library

The newest addition to Springer-Verlag's evolving Journals Preview Service, LINK Alert (discussed in the January 9, 1998 Scout Report), now offers Online First, a series of full-text articles (.pdf format) slated for print publication in the coming months. Currently, Online First offers articles from the following journals: Applied Physics A, Applied Physics B, European Physical Journal C (EPJ C), Inventiones mathematicae, Mathematical Programming, neurogenetics, Supportive Care in Cancer, and Theoretical Chemistry Accounts: Theory, Computation, and Modeling. Articles are placed online as they are accepted. This is an incredible service for academics wishing to follow the cutting edge of science, as these publications appear online well before they appear in print.

428

Protecting Children's Online Privacy.  

ERIC Educational Resources Information Center

Discuss provisions of new federal Children's Online Privacy Protection Act that principals should know to protect student privacy on the Internet. Also discusses relevant provisions of the Family Educational Rights and Privacy Act. (PKP)

Kresses, Mamie

2001-01-01

429

Variable star data online  

NASA Astrophysics Data System (ADS)

Roger Pickard, Andy Wilson and Gary Poyner describe the online database of the British Astronomical Association Variable Star Section, a treasure trove of observations stretching back nearly 125 years.

Pickard, Roger; Wilson, Andy; Poyner, Gary

2012-06-01

430

In Focus Online  

MedlinePLUS

... P rofessionals & Researchers Funded Grants Applications and Forms Foundation Written Articles Clinical Trials Eye Conditions Resources R ... Releases In Focus in focus Online Multimedia Conferences Foundation News J oin the Fight Donate Other Ways ...

431

Otolaryngology online resources  

NSDL National Science Digital Library

A home for free online otolaryngology learning resources. Features of this site: manuscripts, sugrical videos, case records, examination topics, surgical tips, tutorials, CME quiz, presentations, and others. Topics cover otology, rhinology, and laryngology.

432

Free online medical books  

NSDL National Science Digital Library

Freebookcentre.net's medical section contains links to many technical books offered free online, either as html pages or downloadable pdfs. Books are arranged by subject: cardiology, nutrition, oncology, microbiology, anatomy, neurology, infectious disease, allergy and immunology, and others.

433

Wisc-Online: Online Learning Object Repository  

NSDL National Science Digital Library

Drawing on a wide range of subject expertise, the Wisconsin Online Resource Center (Wisc-Online) is a digital library of web-based learning resources known as "learning objects". "Learning objects" are essentially self-contained small chunks of learning that can be embedded in a learning activity, lesson, unit or course. The site includes over 2170 of these objects, and new objects are being developed continuously. Visitors will need to complete a short registration form before they are allowed to access all of the materials on the site, but they can certainly get a sense of what the site includes by checking out the "New Learning Objects" area. Here they will find everything from animated presentations showing how the pH level of a cleaning solution is controlled to an interactive activity on industrial automation. Also, visitors are also encouraged to sign up to receive their RSS feed.

434

Genomics Encyclopedia of Bacteria and Archaea-Root Nodule Bacteria (GEBA-RNB): a resource for microsymbiont genomes (2013 DOE JGI Genomics of Energy and Environment 8th Annual User Meeting)  

SciTech Connect

Wayne Reeve of Murdoch University on "Genomics Encyclopedia of Bacteria and Archaea-Root Nodule Bacteria (GEBA-RNB): a resource for microsymbiont genomes" at the 8th Annual Genomics of Energy & Environment Meeting on March 27, 2013 in Walnut Creek, Calif.

Reeve, Wayne [Murdoch University

2013-03-01

435

OnGuard Online  

NSDL National Science Digital Library

Created by the Federal Trade Commission (FTC), the OnGuard website "provides practical tips from the federal government and the technology industry to help you be on guard against Internet fraud, secure your computer, and protect your personal information." Visitors can learn how to avoid online scams, secure their computers, protect kids online and more. On the homepage, users can find useful information divided into subpages for educators, parents, techies, small business owners, the military and kids.

436

NCI Visuals Online: About  

Cancer.gov

The National Cancer Institute's (NCI) Visuals Online provides a range of photographs and illustrations that may help communicators of medical and public health convey meaning, describe concepts, and tell stories. The collection spans everything from biomedical, science, and patient-care related illustrations and images to portraits of present and past directors and the staff of the National Cancer Institute. Visuals Online currently provides public access to 2,819 images.

437

Geologic Time: Online Edition  

NSDL National Science Digital Library

Offered by the United States Geological Survey (USGS) as a general interest publication, this site is an online edition of a text by the same name, offering a concise overview of the concepts associated with the age of the Earth. The online edition was revised in October of 1997 to reflect current thinking on this topic. Section headers are Geologic Time, Relative Time Scale, Major Divisions of Geologic Time, Index Fossils, Radiometric Time Scale, and Age of the Earth.

1997-10-09

438

Requirements for Entry to Higher Education in the European Community.  

ERIC Educational Resources Information Center

This report provides information about student mobility within the European Community, and how it is linked to the requirements for entry to higher education. The report is divided into two sections. The first is a brief discussion of the six specific factors studied: (1) entry requirement qualifications and examinations; (2) entry requirement…

EURYDICE European Unit, Brussels (Belgium).

439

30 CFR 75.326 - Mean entry air velocity.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Mean entry air velocity. 75.326 Section 75.326 ...Ventilation § 75.326 Mean entry air velocity. In exhausting face ventilation systems, the mean entry air velocity shall be at least 60 feet...

2013-07-01

440

Entry, Exit, and Firm Dynamics in Long Run Equilibrium  

Microsoft Academic Search

A dynamic stochastic model for a competitive industry is developed in which entry, exit, and the growth of firms' output and employment is determined. The paper extends long-run industry equilibrium theory to account for entry, exit, and heterogeneity in the size and growth rate of firms. Conditions under which there is entry and exit in the long run are developed.

Hugo A Hopenhayn

1992-01-01

441

46 CFR 78.37-10 - Official log entries.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 2013-10-01 false Official log entries. 78.37-10 Section 78...Logbook Entries § 78.37-10 Official log entries. (a) In addition to other items required to be entered in the official logbook on every...

2013-10-01

442

7 CFR 319.24-5 - Condition of entry.  

Code of Federal Regulations, 2010 CFR

...SERVICE, DEPARTMENT OF AGRICULTURE FOREIGN QUARANTINE NOTICES Corn Diseases Regulations Governing Entry of Indian Corn Or Maize § 319.24-5 Condition of entry. The corn shall not be removed from the port of entry, nor shall any bag or...

2009-01-01

443

Towards a Theory of Firm Entry and Stabilization Policy  

Microsoft Academic Search

This paper studies the role of stabilization policy in a model where firm entry responds to shocks and uncertainty. We evaluate stabilization policy in the context of a simple analytically solvable sticky price model, where firms have to prepay a fixed cost of entry. The presence of endogenous entry can alter the dynamic response to shocks, leading to greater persistence

Paul R. Bergin; Giancarlo Corsetti

2005-01-01

444

31 CFR 357.0 - Book-entry systems.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Book-entry systems. 357.0 Section 357...THE PUBLIC DEBT REGULATIONS GOVERNING BOOK-ENTRY TREASURY BONDS, NOTES AND BILLS...DIRECT General Information § 357.0 Book-entry systems. (a) Treasury...

2013-07-01

445

31 CFR 337.6 - Conversions to book-entry.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Conversions to book-entry. 337.6 Section 337.6 Money...Certificated Debentures § 337.6 Conversions to book-entry. Upon implementation of the book-entry debenture system, to be...

2013-07-01

446

31 CFR 357.0 - Book-entry systems.  

Code of Federal Regulations, 2010 CFR

...2009-07-01 2009-07-01 false Book-entry systems. 357.0 Section 357...THE PUBLIC DEBT REGULATIONS GOVERNING BOOK-ENTRY TREASURY BONDS, NOTES AND BILLS...DIRECT General Information § 357.0 Book-entry systems. (a) Treasury...

2009-07-01

447

31 CFR 357.0 - Book-entry systems.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false Book-entry systems. 357.0 Section 357...THE PUBLIC DEBT REGULATIONS GOVERNING BOOK-ENTRY TREASURY BONDS, NOTES AND BILLS...DIRECT General Information § 357.0 Book-entry systems. (a) Treasury...

2010-07-01

448

Evaluation of Directory Entries for Electronic Journals and Newsletters.  

ERIC Educational Resources Information Center

The goal of the research is to study directory entries for selected electronic journals and newsletters. Directory entries for the first directory of electronic journals and newsletters are analyzed from the user's point-of-view. Completeness of the directory entries, the accuracy of the information they contain, and the accessibility of the…

Teleha, John C.

449

Food Marketing Liberalization and Trader Entry: Evidence from Madagascar  

Microsoft Academic Search

Food marketing liberalization was expected to induce massive trader entry and competitive markets in Africa. Despite evidence of trader entry, enterprise expansion remains difficult and many claim market power persists, though perhaps in different hands. This paper confronts this puzzle of substantial market entry that might not foster competition. Data from Madagascar reveal distinct groups within rural food marketing channels,

Christopher B. Barrett

1997-01-01

450

Roof bolting patterns at three-way entry intersections  

Microsoft Academic Search

The problem considered is the analysis of a three-way mine entry intersection where entries intersect at right angles. A plane view of the right angle three-way intersection is shown. In the analysis entry widths were varied at 14, 20, and 26 ft. Pillars which consist of coal were assumed to be 40 feet wide. The idealized structural model of the

S. Okubo; S. S. Peng

1978-01-01

451

19 CFR 141.57 - Single entry for split shipments.  

Code of Federal Regulations, 2013 CFR

...the importer of record must file the entry summary, which...included on one entry will be classified as though imported together...rates of duty for identically classified merchandise. An importer of record will be required to file a separate entry for any...

2013-04-01

452

Starting Point: Teaching Entry Level Geoscience  

NSDL National Science Digital Library

The Starting Point collection consists of resources found within the Starting Point website to support teaching entry-level undergraduate geoscience of all types. The collection includes modules on instructional methods that make up the Starting Point site. Examples demonstrate ways of using these methods in geoscience courses and laboratories, and the websites referenced in the site that provide additional information and resources. The collection includes resources that span the needs of faculty and graduate students in designing, developing, and delivering entry-level undergraduate courses in the geosciences. It consists primarily of instructional materials and activities, annotations and materials supporting the use of instructional materials and activities, information on instructional methods and issues in teaching customized for geoscientists, primary sources, review articles, summaries and bibliographies pertaining to pedagogy, assessment, issues in teaching, course development and management, and learning science.

2003-09-02

453

Forty Meters from Entry to Victoria Crater  

NASA Technical Reports Server (NTRS)

NASA's Mars Exploration Rover Opportunity used its navigation camera during the rover's 1,278th Martian day, or sol, (Aug. 28, 2007) to take the images combined into this view. The rover was perched at the lip of Victoria Crater, which is about 800 meters (one-half mile) in diameter.

After assessment of possible routes for Opportunity to descend into the crater, the rover team selected a site farther to the right along the rim. That selected entry point lies near the ripple of bright soil visible just outside the crater near the top center of this scene. The driving distance for Opportunity from the Sol 1,278 viewpoint to the selected entry point is about 40 meters (about 130 feet).

This view is presented as a cylindrical projection with geometric seam correction.

2007-01-01

454

Available hardware for automated entry control  

SciTech Connect

Automated entry control has become an increasingly important issue at facilities where budget constraints are limiting options for manned entry control points. Ongoing work at Sandia National Laboratories is attempting to establish a data base for use by facility security managers working the problem of how to maintain security on a limited budget. Sandia National Laboratories conducted a performance test of the following biometric verifiers: (1) voice verifier by Alpha Microsystems of Santa Ana, California; (2) signature dynamics verifier by Autosig Systems of Irving, Texas; (3) voice verifier by Ecco Industries of Danvers, Massachusetts (now International Electronics); (4) retinal pattern verifier by EyeDentify of Portland, Oregon; (5) fingerprint verifier by Identix of Sunnyvale, California; and (6) hand geometry verifier by Recognition Systems of San Jose, California.

Holmes, J.P. (Sandia National Lab., Albuquerque, NM (United States))

1990-01-01

455

A Shallow Entry Probe Mission to Saturn  

NASA Astrophysics Data System (ADS)

Entry probe missions to the giant planets are needed to discriminate among competing theories of solar system formation and the origin and evolution of the giant planets and their atmospheres, to provide for important comparative studies of the gas and ice giants, and to provide a valuable link to exoplanetary system studies. Within the well-mixed upper tropospheres of the giant planets material from the epoch of solar system formation can be found, providing clues to the local chemical and physical conditions existing at the time and location at which each planet formed. The giant planets therefore represent a laboratory for studying the atmospheric chemistries, dynamics, and interiors of all planets, including Earth and exoplanets. In situ measurements at Jupiter by the Galileo entry probe, remote sensing and interior structure of Jupiter from the Galileo orbiter and Juno missions, and interior structure of Saturn during the upcoming Cassini Solstice Mission's proximal orbits provide three of the four required components of the data set needed for meaningful comparison of Jupiter and Saturn. In situ studies of the composition, structure, and dynamics of Saturn's upper troposphere with a Saturn entry probe would fill the remaining gap. Recognizing the importance of giant planet research, the National Research Council's 2012 Planetary Science Decadal Survey lists Saturn entry probes as a mission concept of exceptional scientific value. The Survey's highest priority science goals for Saturn are tightly focused: noble gas and key isotopic abundances, and the thermal structure of Saturn's atmosphere. Lower priority objectives include the dynamics of Saturn's atmosphere and precision measurement of key disequilibrium species and specific isotopes within the atmosphere. All of the high priority and most of the lower priority objectives can be met with a mission comprising one or more small, shallow (<10 bar) entry probes carrying instruments to measure the atmospheric composition and structure of Saturn's upper troposphere, and ultrastable oscillators on the probe and carrier relay spacecraft to provide measurements of Saturn's atmospheric dynamics by Doppler tracking of the probe. No new technologies are needed to conduct a Saturn entry probe mission. Although significantly less demanding than the Galileo Jupiter entry environment, Saturn entry requires a Thermal Protection System similar to that used for the Galileo probe. The pressure, temperature, and radiation environments at the locations of interest at Saturn are relatively benign and require no extreme environment technology development. Since Saturn does not have a Jupiter-like synchrotron noise environment, and the microwave opacity of Saturn's atmosphere increases approximately as frequency squared, a Saturn probe mission can use lower telecom frequencies to reduce attenuation with data rates that surpass the Galileo probe data rate. Additionally, the Decadal Survey noted significant flexibility in Saturn probe delivery trajectories. Maintaining a disciplined approach to the payload could enable a probe equal to or smaller than the Galileo Probe. This research was carried out in part at the Jet Propulsion Laboratory, California Institute of Technology, under contract with NASA. Copyright 2012 California Institute of Technology. Government sponsorship acknowledged.

Atkinson, D. H.; Spilker, T. R.; Lunine, J.; Simon-Miller, A.; Atreya, S. K.; Brinckerhoff, W.; Colaprete, A.; Coustenis, A.; Guillot, T.; Mahaffy, P.; Reh, K.; Spilker, L.

2012-04-01

456

Electroosmotic Entry Flow in a Microchannel  

Microsoft Academic Search

The entry flow induced by an applied electrical potential through microchannels between two parallel plates is analyzed in this work. A nonlinear, two-dimensional Poisson equation governing the applied electrical potential and the zeta potential of the solid–liquid boundary and the Nernst–Planck equation governing the ionic concentration distribution are numerically solved using a finite-difference method. The applied electrical potential and zeta

R.-J. Yang; L.-M. Fu; C.-C. Hwang

2001-01-01

457

Hypersonic Flight Mechanics. [for atmospheric entry trajectories  

NASA Technical Reports Server (NTRS)

The effects of aerodynamic forces on trajectories at orbital speeds are discussed in terms of atmospheric models. The assumptions for the model are spherical symmetry, nonrotating, and an exponential atmosphere. The equations of flight, and the performance in extra-atmospheric flight are discussed along with the return to the atmosphere, and the entry. Solutions of the exact equations using directly matched asymptotic expansions are presented.

Busemann, A.; Vinh, N. X.; Culp, R. D.

1976-01-01

458

Predicting text entry speed on mobile phones  

Microsoft Academic Search

We present a model for predicting expert text entry rates for several input methods on a 12-key mobile phone keypad. The model includes a movement component based on Fitts' law and a linguistic component based on digraph, or letter-pair, probabilities. Predictions are provided for one-handed thumb and two-handed index finger input. For the traditional multi-press method or the lesser-used two-key

Miika Silfverberg; I. Scott MacKenzie; Panu Korhonen

2000-01-01

459

Early Steps in Rotavirus Cell Entry  

Microsoft Academic Search

Rotaviruses, the leading cause of severe dehydrating diarrhea in infants and young children worldwide, are non-enveloped viruses\\u000a formed by three concentric layers of protein that enclose a genome of double-stranded RNA. These viruses have a specific cell\\u000a tropism in vivo, infecting primarily the mature enterocytes of the villi of the small intestine. It has been found that rotavirus\\u000a cell entry

S. Lopez; C. F. Arias

460

entry for reduced keyboards: application to Catalan  

Microsoft Academic Search

Users of digital mobile phones have access to an increas- ing number of text-based services but most of them can only use a very re- duced keyword for text entry. Tradi- tionally, this has been solved by means of multiple tapping and delays or next- character keys (e.g. 66(pause)666 for no), which is slow (two taps per letter on average),

Mikel L. Forcada

461

Space X1 First Entry Sample  

NASA Technical Reports Server (NTRS)

One mini-grab sample container (m-GSC) was returned aboard Space X1 because of the importance of quickly knowing first-entry conditions in this new commercial module. This sample was analyzed alongside samples of the portable clean room (PCR) used in the Space X complex at KSC. The recoveries of C-13-acetone, fluorobenzene, and chlorobenzene from the GSCs averaged 130, 129, and 132 %, respectively.

James, John T.

2012-01-01

462

Entry and Exit Strategies in Migration Dynamics  

Microsoft Academic Search

In this paper, we use a real option framework in order to study the role of combined entry and exit strategies in migration.\\u000a The paper’s aim consists in investigating migrants’ behaviour and in particular their duration of stay in the host country.\\u000a Our framework shows two threshold levels: the first triggers the migration choice, while the second triggers the return

Sergio Vergalli

2006-01-01

463

Rarefied Flows of Planetary Entry Capsules  

NASA Technical Reports Server (NTRS)

The impact of rarefaction on entry capsules and spacecraft aerothermodynamics is emphasized for various aeroassist missions. The capability of the direct simulation Monte Carlo (DSMC) method to simulate such flows is demonstrated through examples of validation studies and applications. Several space flight projects and ground-based experiments are reviewed for which rarefaction effects have significant effect on spacecraft performance or experimental measurements. This review clearly demonstrates the significant role that the DSMC method plays in characterizing such flows.

Moss, James N.

1997-01-01

464

Unified treatment of lifting atmospheric entry  

NASA Technical Reports Server (NTRS)

This paper presents a unified treatment of the effect of lift on peak acceleration during atmospheric entry. Earlier studies were restricted to different regimes because of approximations invoked to solve the same transcendental equation. This paper shows the connection between the earlier studies by employing a general expression for the peak acceleration and obtains solutions to the transcendental equation without invoking the earlier approximations. Results are presented and compared with earlier studies where appropriate.

Nachtsheim, P. R.; Lehman, L. L.

1980-01-01

465

Desalination Directory Online  

NSDL National Science Digital Library

Maintained by Mariam Balaban, the Desalination Directory Web site offers over 12,000 entries consisting of government and academic institutions, companies, and individuals in the field of desalination and water reuse. The individuals, companies and institution, cumulative and the Office of Saline Water categories are searchable by keyword, while the associations, publications, and events categories link to individual lists of information.

1997-01-01

466

Orion Entry, Descent, and Landing Simulation  

NASA Technical Reports Server (NTRS)

The Orion Entry, Descent, and Landing simulation was created over the past two years to serve as the primary Crew Exploration Vehicle guidance, navigation, and control (GN&C) design and analysis tool at the National Aeronautics and Space Administration (NASA). The Advanced NASA Technology Architecture for Exploration Studies (ANTARES) simulation is a six degree-of-freedom tool with a unique design architecture which has a high level of flexibility. This paper describes the decision history and motivations that guided the creation of this simulation tool. The capabilities of the models within ANTARES are presented in detail. Special attention is given to features of the highly flexible GN&C architecture and the details of the implemented GN&C algorithms. ANTARES provides a foundation simulation for the Orion Project that has already been successfully used for requirements analysis, system definition analysis, and preliminary GN&C design analysis. ANTARES will find useful application in engineering analysis, mission operations, crew training, avionics-in-the-loop testing, etc. This paper focuses on the entry simulation aspect of ANTARES, which is part of a bigger simulation package supporting the entire mission profile of the Orion vehicle. The unique aspects of entry GN&C design are covered, including how the simulation is being used for Monte Carlo dispersion analysis and for support of linear stability analysis. Sample simulation output from ANTARES is presented in an appendix.

Hoelscher, Brian R.

2007-01-01

467

Orion Entry Flight Control Stability and Performance  

NASA Technical Reports Server (NTRS)

The Orion Spacecraft will be required to perform entry and landing functions for both Low Earth Orbit (LEO) and Lunar return missions, utilizing only the Command Module (CM) with its unique systems and GN&C design. This paper presents the current CM Flight Control System (FCS) design to support entry and landing, with a focus on analyses that have supported its development to date. The CM FCS will have to provide for spacecraft stability and control while following guidance or manual commands during exo-atmospheric flight, after Service Module separation, translational powered flight required of the CM, atmospheric flight supporting both direct entry and skip trajectories down to drogue chute deploy, and during roll attitude reorientation just prior to touchdown. Various studies and analyses have been performed or are on-going supporting an overall FCS design with reasonably sized Reaction Control System (RCS) jets, that minimizes fuel usage, that provides appropriate command following but with reasonable stability and control margin. Results from these efforts to date are included, with particular attention on design issues that have emerged, such as the struggle to accommodate sub-sonic pitch and yaw control without using excessively large jets that could have a detrimental impact on vehicle weight. Apollo, with a similar shape, struggled with this issue as well. Outstanding CM FCS related design and analysis issues, planned for future effort, are also briefly be discussed.

Strahan, Alan L.; Loe, Greg R.; Seiler, Pete

2007-01-01

468

Radon entry control in new house construction  

SciTech Connect

People exposed to high concentration levels of radon face an increased risk of developing lung cancer. The risk is directly proportional to the length and level of radon exposure. Because of health reasons, it is safer to build new houses with radon mitigation systems installed in slab-on-grade houses. However, the interrelationships between parameters and factors governing radon entry and control are highly complex. A study performed by the University of Florida has examined the effectiveness of different radon entry control approaches. The analysis was based on 47 houses from three research projects conducted by the University of Florida (14 houses), Florida Solar Energy Center (13 houses), and GEOMET Technologies (20 houses). The evaluation of the performance and effectiveness of improved floor slabs, space conditioning, and ventilating systems were analyzed. Statistical analyses of the interrelationship between various parameters were also performed. Study findings such as the important factors in reducing radon entry and the effectiveness of passive construction approach and active subslab depressurization systems are presented in this paper. 9 refs., 10 figs., 3 tabs.

Najafi, F.T.; Lalwani, L.; Li, W.G. [Univ. of Florida, Gainesville, FL (United States)

1995-07-01

469

Breaking In: Human Metapneumovirus Fusion and Entry  

PubMed Central

Human metapneumovirus (HMPV) is a leading cause of respiratory infection that causes upper airway and severe lower respiratory tract infections. HMPV infection is initiated by viral surface glycoproteins that attach to cellular receptors and mediate virus membrane fusion with cellular membranes. Most paramyxoviruses use two viral glycoproteins to facilitate virus entry—an attachment protein and a fusion (F) protein. However, membrane fusion for the human paramyxoviruses in the Pneumovirus subfamily, HMPV and respiratory syncytial virus (hRSV), is unique in that the F protein drives fusion in the absence of a separate viral attachment protein. Thus, pneumovirus F proteins can perform the necessary functions for virus entry, i.e., attachment and fusion. In this review, we discuss recent advances in the understanding of how HMPV F mediates both attachment and fusion. We review the requirements for HMPV viral surface glycoproteins during entry and infection, and review the identification of cellular receptors for HMPV F. We also review our current understanding of how HMPV F mediates fusion, concentrating on structural regions of the protein that appear to be critical for membrane fusion activity. Finally, we illuminate key unanswered questions and suggest how further studies can elucidate how this clinically important paramyxovirus fusion protein may have evolved to initiate infection by a unique mechanism.

Cox, Reagan G.; Williams, John V.

2013-01-01

470

Cholesterol dependence of Newcastle Disease Virus entry.  

PubMed

Lipid rafts are membrane microdomains enriched in cholesterol, sphingolipids, and glycolipids that have been implicated in many biological processes. Since cholesterol is known to play a key role in the entry of some other viruses, we investigated the role of cholesterol and lipid rafts in the host cell plasma membrane in Newcastle Disease Virus (NDV) entry. We used methyl-?-cyclodextrin (M?CD) to deplete cellular cholesterol and disrupt lipid rafts. Our results show that the removal of cellular cholesterol partially reduces viral binding, fusion and infectivity. M?CD had no effect on the expression of sialic acid containing molecule expression, the NDV receptors in the target cell. All the above-described effects were reversed by restoring cholesterol levels in the target cell membrane. The HN viral attachment protein partially localized to detergent-resistant membrane microdomains (DRMs) at 4°C and then shifted to detergent-soluble fractions at 37°C. These results indicate that cellular cholesterol may be required for optimal cell entry in NDV infection cycle. PMID:22192779

Martín, Juan José; Holguera, Javier; Sánchez-Felipe, Lorena; Villar, Enrique; Muñoz-Barroso, Isabel

2012-03-01

471

Parachute Swivel Mechanism for planetary entry  

NASA Astrophysics Data System (ADS)

A parachute swivel mechanism (PSM) for planetary entry missions such as a Mars probe (MARSNET) or return of cometary material samples (ROSETTA mission) has been developed. The purpose of the PSM is to decouple the spin of the probe from the parachute, with low friction torque, during both the deployment and descent phases. Critical requirements are high shock loads, low friction, low temperatures, and several years of storage in the deep space environment (during the cruise phase of the probe, prior to operation). The design uses a main thrust ball bearing to cope with the load requirement and a smaller thrust ball bearing for guiding of the shaft. Except for use on the Viking and Galileo swivels, it appears that this type of bearing has very rarely been employed in space mechanisms, so that little is known of its friction behavior with dry lubrication. A slip ring assembly allows the transfer of electrical power for post-reefing of the parachute. A test program has been conducted covering the environmental conditions of Mars entry and Earth reentry. This paper describes requirement constraints, model missions of planetary entries, a bearing trade-off, analyses performed, design details, the lubrication system, and test results (friction torque versus load/spin rate). In addition, the design of the test rig is addressed.

Birner, R.; Kaese, J.; Koller, F.; Muehlner, E.; Luhmann, H.-J.

1993-05-01

472

Parachute Swivel Mechanism for planetary entry  

NASA Technical Reports Server (NTRS)

A parachute swivel mechanism (PSM) for planetary entry missions such as a Mars probe (MARSNET) or return of cometary material samples (ROSETTA mission) has been developed. The purpose of the PSM is to decouple the spin of the probe from the parachute, with low friction torque, during both the deployment and descent phases. Critical requirements are high shock loads, low friction, low temperatures, and several years of storage in the deep space environment (during the cruise phase of the probe, prior to operation). The design uses a main thrust ball bearing to cope with the load requirement and a smaller thrust ball bearing for guiding of the shaft. Except for use on the Viking and Galileo swivels, it appears that this type of bearing has very rarely been employed in space mechanisms, so that little is known of its friction behavior with dry lubrication. A slip ring assembly allows the transfer of electrical power for post-reefing of the parachute. A test program has been conducted covering the environmental conditions of Mars entry and Earth reentry. This paper describes requirement constraints, model missions of planetary entries, a bearing trade-off, analyses performed, design details, the lubrication system, and test results (friction torque versus load/spin rate). In addition, the design of the test rig is addressed.

Birner, R.; Kaese, J.; Koller, F.; Muehlner, E.; Luhmann, H.-J.

1993-01-01

473

The Encyclopedia of Systems Biology and OMICS (first presentation) and The ISA Infrastructure for Multi-omics Data (second presentation) (GSC8 Meeting)  

SciTech Connect

The Genomic Standards Consortium was formed in September 2005. It is an international, open-membership working body which promotes standardization in the description of genomes and the exchange and integration of genomic data. The 2009 meeting was an activity of a five-year funding "Research Coordination Network" from the National Science Foundation and was organized held at the DOE Joint Genome Institute with organizational support provided by the JGI and by the University of California - San Diego. Eugene Kolker from Seattle Children's Hospital briefly discusses "The Encyclopedia of Systems Biology and OMICS," followed by Susanna Sansone from the EBI on "The ISA Infrastructure for multi-omics data" at the Genomic Standards Consortium's 8th meeting at the DOE JGI in Walnut Creek, Calif. on Sept. 11, 2009.

Kolker, Eugene [Seattle Children's Hospital; Susanna Sansone (EBI) [EBI

2011-09-11

474

English Language Growth after University Entry  

ERIC Educational Resources Information Center

Almost 800 international students from non-English speaking backgrounds enrolled at five Australian universities responded to an online survey accessed through a dedicated website. The survey captured demographics; language and language learning background; strategies for continuing to develop English; motivation, attitudes and beliefs about…

Rochecouste, Judith; Oliver, Rhonda; Mulligan, Denise

2012-01-01

475

Science from Shallow Saturn Entry Probes  

NASA Astrophysics Data System (ADS)

Data from atmospheric entry probe missions at the giant planets could uniquely discriminate between competing theories of solar system formation and the origin and evolution of the giant planets and their atmospheres, providing for valuable comparative studies of giant planets as well as providing a laboratory for studying the atmospheric chemistries, dynamics, and interiors of all the planets including Earth. The giant planets also represent a valuable link to extrasolar planetary systems. For these reasons, a Saturn Probe mission with a shallow probe is ranked by the recent U.S. Planetary Science Decadal Survey as a high priority for a New Frontiers class mission. Atmospheric constituents needed to constrain theories of solar system formation and the origin and evolution of the giant planets could be accessed and sampled by shallow entry probes. Many important constituents are either spectrally inactive or are beneath an atmospheric overburden that is optically thick at useful wavelengths and are therefore not remotely accessible by flyby or orbiting spacecraft. A small, scientifically focused shallow entry probe mission could make critical abundance measurements of key constituents, and could measure profiles of atmospheric structure and dynamics at a vertical resolution that is significantly higher than could be achieved by remote sensing techniques. The Galileo mission began the detailed study of the solar system's two gas giants by dropping an entry probe into the atmosphere of Jupiter and deploying an orbiter around Jupiter. In 2016-2017 the Juno mission will make measurements of Jupiter's deep oxygen abundance, and gravitational and magnetic fields. In the same epoch, the Cassini orbiter is planned to pursue a set of Juno-like orbits to make comparable gravitational and magnetic field measurements of Saturn. A Saturn atmospheric entry probe would complete the quartet of missions needed for a comparative study of the two gas giants, leading to improved models of solar system formation. A highly focused entry probe mission at Saturn carrying a minimal science payload could address unique and critical science while fitting within existing program budget caps. Fundamental measurements include abundances of the noble gases He, Ne, Ar, Kr, and Xe and, abundances of key isotopic ratios 4He/3He, D/H, 15N/14N, 18O/16O, and 13C/12C. Detection of disequilibrium species CO, PH3, AsH3, and GeH4 is diagnostic of deeper internal processes and dynamics of the atmosphere along the probe descent. Abundances of these key constituents, as well as carbon which does not condense at Saturn, sulfur which is expected to be well-mixed below the 4 to 5-bar ammonium hydrosulfide (NH4SH) cloud, and gradients of nitrogen below the NH4SH cloud and oxygen in the upper layers of the H2O and H2O-NH4 solution cloud, could be measured by an entry probe descending through 10 bars. In concert with the results from Galileo, Cassini, and Juno, a shallow Saturn probe capable of measuring abundances of key constituents not accessible by a remote sensing mission would provide critical measurements enabling a comparison of composition and dynamical processes on the giant planets while also providing an improved context for understanding exoplanets.

Atkinson, D. H.; Coustenis, A.; Lunine, J. I.; Simon-Miller, A. A.; Atreya, S. K.; Brinckerhoff, W.; Colaprete, A.; Guillot, T.; Mahaffy, P.; Spilker, L. J.; Spilker, T. R.; Webster, C.

2013-09-01

476

Science from a Saturn Entry Probe Mission  

NASA Astrophysics Data System (ADS)

Data from atmospheric entry probe missions to the giant planets can uniquely discriminate between competing theories of solar system formation and the origin and evolution of the giant planets and their atmospheres. This provides for important comparative studies of the gas and ice giants, and provides a laboratory for studying the atmospheric chemistries, dynamics, and interiors of all the planets including Earth. Additionally, the giant planets also represent a valuable link to extrasolar planetary systems. For these reasons, a Saturn Probe mission with a shallow probe is ranked as a high priority for a New Frontiers class mission in the recent Planetary Decadal Survey. Atmospheric constituents needed to constrain theories of solar system formation and the origin and evolution of the giant planets can be accessed and sampled by shallow entry probes. Many of the most important constituents are either spectrally inactive or are beneath an atmospheric overburden that is optically thick at useful wavelengths and are therefore not remotely accessible by flyby or orbiting spacecraft such as Cassini. A small, scientifically focused shallow entry probe mission can make critical abundance measurements of key constituents, and can measure profiles of atmospheric structure and dynamics at a vertical resolution that is significantly higher than can be achieved by remote sensing techniques. The Galileo mission began the detailed study of the solar system's two major gas giants by dropping an entry probe into the atmosphere of Jupiter and deploying an orbiter around Jupiter. In 2016-2017 the Juno mission will make detailed measurements of Jupiter's deep oxygen abundance, and gravitational and magnetic fields. In the same epoch, the Cassini Saturn Orbiter will begin a set of Juno-like orbits to make comparable gravitational and magnetic field measurements of Saturn. A Saturn atmospheric entry probe would complete the quartet of missions needed for a comparative study of the two planets leading to a better understanding of the formation of the solar system. A highly focused Saturn entry / descent probe mission carrying a minimal science payload can address unique and critical science while fitting within existing program budget caps. Fundamental measurements include abundances of the noble gases He, Ne, Ar, Kr, and Xe, abundances of key isotopic ratios 4He/3He, D/H, 15N/14N, 18O/16O, and 13C/12C. Detection of disequilibrium species such as CO, PH3, AsH3, and GeH4 are diagnostic of deeper internal processes and dynamics of the atmosphere along the probe descent path. Abundances of all these key constituents, as well as carbon which does not condense at Saturn, sulfur which is expected to be well-mixed below the 4 to 5-bar ammonium hydrosulfide (NH4SH) cloud, and gradients of nitrogen below the NH4SH cloud and oxygen in the upper layers of the water and water-ammonia solution cloud, can be measured by a shallow entry probe descending through 5 - 10 bars. In concert with the results from Galileo, Cassini, and Juno, a shallow Saturn probe capable of measuring abundances of key constituents not remotely accessible by an orbiter or flyby mission will provide measurements critical to enabling a comparison of composition and dynamical processes on the giant planets in our solar system, thereby providing an improved context for understanding exoplanets as well.

Atkinson, D. H.; Spilker, T. R.; Lunine, J. I.; Simon-Miller, A. A.; Atreya, S. K.; Colaprete, A.; Coustenis, A.; Reh, K. R.; Spilker, L. J.

2012-12-01

477

19 CFR 143.34 - Procedure for electronic immediate delivery or entry.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 false Procedure for electronic immediate delivery or entry. 143...CONTINUED) SPECIAL ENTRY PROCEDURES Electronic Entry Filing § 143.34 Procedure for electronic immediate delivery or entry. To...

2013-04-01

478

Physician order entry of ultrasound examination with handheld wireless terminal  

NASA Astrophysics Data System (ADS)

Although our hospital has an electronic order entry system, physician order entries must be performed using one of a limited number of terminals which are located in places like nurse stations. Due to this limitation, the mobility of the ultrasound machine cannot be fully exploited if a physician wants to perform a mobile ultrasound examination far from an entry terminal. In addition, this situation increases the possibility that a physician will fail to issue a paper voucher of the examination. In an attempt to resolve these problems, we have developed a mobile physician order entry system that incorporates ultrasound machines equipped with handheld wireless terminals, which use the 802.11b standard and the bandwidth is 11 Mbps. This is an efficient way to order ultrasound examination entries because physicians can register entries at any location in a hospital ward. In addition, the proposed system is a reliable method by which to attach images upon ultrasound examination entry.

Matsuya, Shiro; Onogi, Yuzo; Shinohara, Nobuo; Yamaguchi, Izumi; Watanabe, Hiroki; Ohe, Kazuhiko; Yamaguchi, Kenichi; Niidome, Takuro; Oyama, Hiroshi

2004-04-01

479

Poliovirus Cell Entry: Common Structural Themes in Viral Cell Entry Pathways  

PubMed Central

Structural studies of polio- and closely related viruses have provided a series of snapshots along their cell entry pathways. Based on the structures and related kinetic, biochemical, and genetic studies, we have proposed a model for the cell entry pathway for polio- and closely related viruses. In this model a maturation cleavage of a capsid protein precursor locks the virus in a metastable state, and the receptor acts like a transition-state catalyst to overcome an energy barrier and release the mature virion from the metastable state. This initiates a series of conformational changes that allow the virus to attach to membranes, form a pore, and finally release its RNA genome into the cytoplasm. This model has striking parallels with emerging models for the maturation and cell entry of more complex enveloped viruses such as influenza virus and HIV.

Hogle, James M.

2006-01-01

480

Entry, Descent, and Landing Operations Analysis for the Stardust Re-Entry Capsule  

NASA Technical Reports Server (NTRS)

On the morning of January 15, 2006, the Stardust capsule successfully landed at the Utah Test and Training range in northwest Utah returning cometary samples from the comet Wild-2. An overview of the entry, descent, and landing (EDL) trajectory analysis that was performed for targeting during the Stardust Mission Navigation Operations Phase upon final approach to Earth is described. In addition, how the predicted landing location and the resulting overall 99 percentile landing footprint ellipse obtained from a Monte Carlo analysis changed over the final days and hours prior to entry is also presented. The navigation and EDL operations effort accurately delivered the entry capsule to the desired landing site. The final landing location was 8.1 km from the target, which was well within the allowable landing area.

Desao, Prasun N.; Lyons, Dan T.; Tooley, Jeff; Kangas, Julie

2006-01-01

481

Legal Portraits Online  

NSDL National Science Digital Library

The Harvard Law School Library has quite an impressive collection of legal art and visual materials, and as of late, they have been working to digitize these works and place them online for the web-browsing public. The collection includes images of jurists, political figures, legal thinkers, and lawyers that date from the Middle Ages all the way up to the late twentieth century. As the website notes, the collection is quite strong in its coverage of eighteenth and nineteenth century British and American lawyers, including such luminaries as Jeremy Bentham and John Marshall. Visitors can search the collection at their leisure, and they can also look at the online exhibition titled "The Legal Portrait Project Online", if they wish to do so.

2003-01-01

482

Mediterranean Prehistory Online  

NSDL National Science Digital Library

This new online journal, which focuses on the prehistory and protohistory of the Mediterranean Basin, is published as an integrated part of the European Commission's Early Prehistoric Migrations project. As with many other online academic journals, Mediterranean Prehistory Online will select papers not only for their academic content but also for their use "of the opportunities provided by electronic publication and the HTML files." Article topics will include the results of archaeological research, data analyses, discussions on the information technologies and archaeology, as well as book and software reviews. Currently, abstracts and full-text are available for six articles. Topics include exploitation of Obsidian for tool making in the Italian Peninsula, the Early Upper Paleolithic of Croatia, and the extinction of Iberian Neandertals. In addition to articles, the site features an Arch News section and a collection of related links.

483

Evaluation of online documentation.  

PubMed Central

The University of Iowa Hospitals and Clinics (UIHC) implemented an online documentation system for patient care orders in 1994-1996. Developed entirely in-house, the INFORMM NIS (Information Network for Online Retrieval & Medical Management Nursing Information System) features order-generated task lists, defaulted charting responses, computer-generated chart forms, and graphical data displays. To measure the impact of automation on user perceptions, and documentation compliance, completeness, time, and location, a team of nursing and information systems representatives captured data before and after implementation. Staff surveys show more positive user perceptions. Documentation results indicate increased compliance and completeness, and a decrease or no change in time. Online documentation occurs mainly at unit workstations.

Prophet, C. M.; Krall, M. E.; Budreau, G. K.; Gibbs, T. D.; Walker, K. P.; Eyman, J. M.; Hafner, M. J.

1998-01-01

484

Journal of Online Behavior  

NSDL National Science Digital Library

The Journal of Online Behavior (JOB) "is concerned with the empirical study of human behavior in the online environment, and with the impact of evolving communication and information technology upon individuals, groups, organizations, and society." The peer-reviewed articles cross science and social science disciplinary boundaries as well as geographical boundaries. The electronic version of the journal, which is available free of charge, includes an interactive discussion space. Some topics addressed in the articles and research reports include comparative media effects on communication processes and outcomes; social-cognitive dynamics and their effects presented by online interaction; temporal and longitudinal analyses of media influences and adaptation; and media usage and effects by and among ethnic and cultural groups. This site is also reviewed in the April 22, 2005 _NSDL MET Report_.

485

Online Job Admission  

NASA Astrophysics Data System (ADS)

We consider the problem of scheduling a maximum profit selection of jobs on m identical machines. Jobs arrive online one by one and each job is specified by its start and end time. The goal is to determine a non-preemptive schedule which maximizes the profit of the scheduled jobs, where the profit of a job is equal to its length. Upon arrival of a new job, an online algorithm must decide whether to accept the job (“admit the job”) or not. If the job is accepted, the online algorithm must be able to reorganize its already existing schedule such that the new job can be processed together with all previously admitted jobs, however, the algorithm need not specify on which machine the job will eventually be run.

Krumke, Sven O.; van Stee, Rob; Westphal, Stephan

486

Washington Post Online  

NSDL National Science Digital Library

The Washington Post has an online version on the Web. The site includes the full text of the daily edition, plus news from the 50 states, a daily congressional calendar, and over 1000 pages of links to news, reference and Web sites for over 200 countries around the world. Features include movie reviews, book reviews (along with selected first chapters of books), links to over fifteen online comic strips, and sports features. A searchable archive of the previous two weeks papers is available and, in the near future, an archive from 1986 to the present will be available. There are also several chat rooms on various subjects ranging from business to local Washington, DC issues. While the Post is well known for its international and national coverage, the online version is also very strong with respect to local area news.

1996-01-01

487

Online resources in pediatrics  

PubMed Central

Abstract Question In the past few years, parents of children seen in my clinic are frequently conducting online searches relating to medical questions. How reliable are online resources in pediatrics and what guidance can I provide parents when searching online about their children’s health? Answer The use of the Internet to gather medical information has increased dramatically over the past decade, including in the field of pediatrics. The enormous amount of information is confusing to parents and providers alike, and general search engines have not done enough to distinguish reliable from biased information. Physicians can develop websites with reliable content, advise parents on how to identify reliable sources of information, and give examples of websites to review child health–related topics.

Goldman, Ran D.

2014-01-01

488

31 CFR 370.12 - What happens if an error is made in a credit entry, or if a duplicate credit entry is made?  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false What happens if an error is made in a credit entry, or if a duplicate credit entry is...SECURITIES Credit ACH Entries § 370.12 What happens if an error is made in a credit entry, or if a duplicate credit entry...

2013-07-01

489

Online Field Journal: Dioramas  

NSDL National Science Digital Library

This online activity is part of the museum's Online Field Journal Web site, where young children can explore the wonders of nature with the help of an adult. Here, they can create a replica of one of three museum dioramas. On the opening page, the three featured dioramas are listed: Wetlands, Desert, and Fores. On the first page of each diorama activity, there is a full-color image of the diorama, plus links to printable pages with the diorama's background image and pieces. A separate instructions page is included that has kid-friendly step-by-step directions.

490

Statistics Online Computational Resource  

NSDL National Science Digital Library

The Statistics Online Computational Resource (SOCR) is a collection of downloadable applets, computational and graphing tools, and instructional materials for use in online data analysis, visualization, and integration. The tools are organized into categories by use: distributions (interactive graphs and calculators); experiments (computer-generated analogs of popular games and processes); analyses (tools for statistical data analysis); games (interfaces and simulations to real-life processes); data modelers (tools for distribution, polynomial and spectral model-fitting and simulation); and graphs, plots, and charts (comprehensive web-based tools for exploratory data analysis). There is also a collaborative collection (Wiki) of activities and educational materials that use these tools.

2005-02-08

491

An Online Bioinformatics Curriculum  

PubMed Central

Online learning initiatives over the past decade have become increasingly comprehensive in their selection of courses and sophisticated in their presentation, culminating in the recent announcement of a number of consortium and startup activities that promise to make a university education on the internet, free of charge, a real possibility. At this pivotal moment it is appropriate to explore the potential for obtaining comprehensive bioinformatics training with currently existing free video resources. This article presents such a bioinformatics curriculum in the form of a virtual course catalog, together with editorial commentary, and an assessment of strengths, weaknesses, and likely future directions for open online learning in this field.

Searls, David B.

2012-01-01

492

Geology Online Laboratory Manual  

NSDL National Science Digital Library

The 16 labs in this manual cover specific subjects from a range of topics including mineralogy, sedimentology, litho- and biostratigraphy, vertebrate and invertebrate paleontology, relative dating, and geologic map interpretation. Labs contain reference text, photos, illustrations, diagrams, and classification charts which prepare students for the accompanying exercises. Answers are not provided and labs are not designed for online interaction, but hard copies of the lab manual are available for purchase from the Georgia Perimeter College Online Bookstore. A link from the site provides ordering information and instructions.

Gore, P.; College, Georgia P.

493

Basics of online searching  

SciTech Connect

The purpose of this book is to teach the principles of interactive bibliographic searching, or information retrieval to those with little or no prior experience. The major intended audiences are students, working information specialists and librarians, and end users, the people for whom all the searching is done. Material covers such topics as the nature of online searching, the kinds of files available online, the commands used to search for them, and the strategy used to perform a search - with numerous examples from real systems presented.

Meadow, C.T.; Cochrane, P.A.

1981-01-01

494

Security Management Online  

NSDL National Science Digital Library

Security Management Online is a website created for the Security Professional field. The site is filled with current articles, hot topics, and forums. Visitors can navigate the site by specific topics such as: Terrorism/Homeland Security, Airport Screening, School Security, and more. In addition, visitors can search by the type of resource they are seeking through quick links on the left side of the home page. These online links include Events, Archives, Forums, and links to additional resources. This site is a valuable research tool for anyone seeking current information about the latest security topics.

2006-11-18

495

Project Based Learning Online  

NSDL National Science Digital Library

This is the home site for PBL-Online.org, which provides comprehensive resources on the Project Based Learning model of instruction. Registered teacher-users have access to free templates for creating project-based activities, including assessment planning, project mapping, checklists, rubrics, and standards. Projects are stored in a database that may be searched by author, keyword, grade level, or topic. Background information on the Project Based Learning method and related research are also provided, along with strategies for implementation in the K-12 classroom. This web site was developed by the Buck Institute for Education specifically for use with the Project Based Learning Handbook, available for online purchase.

2009-11-20

496

The water entry of decelerating spheres  

NASA Astrophysics Data System (ADS)

We present the results of a combined experimental and theoretical investigation of the vertical impact of low-density spheres on a water surface. Particular attention is given to characterizing the sphere dynamics and the influence of its deceleration on the shape of the resulting air cavity. A theoretical model is developed that yields simple expressions for the pinch-off time and depth. Theoretical predictions compare favorably with our experimental observations, and allow us to rationalize the form of water-entry cavities resulting from the impact of buoyant and nearly buoyant spheres.

Aristoff, Jeffrey; Truscott, Tadd; Techet, Alexandra; Bush, John

2009-11-01

497

The water entry of decelerating spheres  

NASA Astrophysics Data System (ADS)

We present the results of a combined experimental and theoretical investigation of the vertical impact of low-density spheres on a water surface. Particular attention is given to characterizing the sphere dynamics and the influence of its deceleration on the shape of the resulting air cavity. A theoretical model is developed which yields simple expressions for the pinch-off time and depth, as well as the volume of air entrained by the sphere. Theoretical predictions compare favorably with our experimental observations, and allow us to rationalize the form of water-entry cavities resulting from the impact of buoyant and nearly buoyant spheres.

Aristoff, Jeffrey M.; Truscott, Tadd T.; Techet, Alexandra H.; Bush, John W. M.

2010-03-01

498

A Novel HIV-1 Entry Inhibitor  

Cancer.gov

Soluble forms (sCD4) of human CD4, the HIV-1 primary receptor, are potent HIV-1 entry inhibitors. Both four-domain (D1-4) and two-domain (D1D2) sCD4 and their fusion proteins have been tested as candidate therapeutics in animal models and in human clinical trials and were well tolerated by patients with no significant clinical or immunologic toxicities and exhibited significant inhibitory activities. However, their activities were transient and the virus rapidly rebound.

499

Rational design of HIV-1 entry inhibitors.  

PubMed

This chapter reviews studies that have used in silico techniques to design or identify potential HIV-1 entry inhibitors targeting cellular receptors CD4, CCR5, and CXCR4 and envelope glycoproteins, gp120 and gp41 of HIV-1. Both structure- and ligand-based design techniques have been used in those studies by applying diverse modeling techniques such as quantitative structure-activity relationship analysis, conformational analysis, molecular dynamics, pharmacophore generation, docking, virtual screening (using docking software and also shape-based ROCS techniques), and fragment-based design. PMID:23568472

Debnath, Asim K

2013-01-01

500

NOVA Online: Shark Attack!  

NSDL National Science Digital Library

Excellent resource on the biology of sharks and what makes them the "perfect predator." This highly interactive website contains features like the "clickable shark," which allows you to learn about the different parts of the shark just by clicking on them. Additional features include QuickTime VR images of Cocos Island, including an ultralight flight, journal entries from scientists, and "exploding myths," where scientists debunk common shark misunderstandings.