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1,319 Matching Results
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Library of Advanced Materials for Engineering : LAME.
Constitutive modeling is an important aspect of computational solid mechanics. Sandia National Laboratories has always had a considerable effort in the development of constitutive models for complex material behavior. However, for this development to be of use the models need to be implemented in our solid mechanics application codes. In support of this important role, the Library of Advanced Materials for Engineering (LAME) has been developed in Engineering Sciences. The library allows for simple implementation of constitutive models by model developers and access to these models by application codes. The library is written in C++ and has a very simple object oriented programming structure. This report summarizes the current status of LAME.
Date:
August 1, 2007
Creator:
Hammerand, Daniel Carl & Scherzinger, William Mark
Object Type:
Report
System:
The UNT Digital Library
Assessment of a Library Learning Theory by Measuring Library Skills of Students Completing an Online Library Instruction Tutorial
This study is designed to reveal whether students acquire the domains and levels of library skills discussed in a learning library skills theory after participating in an online library instruction tutorial. The acquisition of the library skills is demonstrated through a review of the scores on online tutorial quizzes, responses to a library skills questionnaire, and bibliographies of course research papers. Additional areas to be studied are the characteristics of the participants enrolled in traditional and online courses at a community college and the possible influence of these characteristics on the demonstrated learning of library skills. Multiple measurement methods, identified through assessment of library instruction literature, are used to verify the effectiveness of the library skills theory and to strengthen the validity and reliability of the study results.
Date:
May 2007
Creator:
Watson, Dana L.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Call Number, Volume 66, Number 1, Spring 2007
Call Number, is the newsletter of the School of Library and Information Sciences, University of North Texas. The periodical contains information about professors, news in the department, and the school's alumni.
Date:
2007
Creator:
University of North Texas. School of Library and Information Sciences.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Call Number, Volume 66, Number 2, Fall 2007
Call Number, is the newsletter of the School of Library and Information Sciences, University of North Texas. The periodical contains information about professors, news in the department, and the school's alumni.
Date:
2007
Creator:
University of North Texas. School of Library and Information Sciences.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Are Online Catalogs for Children Giving Them What They Need? Children's Cognitive Development and Information Seeking and Their Impact on Design
Research shows children in an online environment often search by browsing, which relies heavily on recognition and content knowledge, so catalog systems for children must use effective symbols or pictorial representations, which correspond with children's own cognitive schema and level of recognition knowledge. This study was designed to look at the success of young children (ages 5 to 8) in searching 3 online public library catalogs designed for them, and it focused specifically on the pictorial representations and text descriptors used in the systems' browsing hierarchy. The research sought answer whether young children (ages 5 to 8) are really poor searchers because of cognitive development and lack of technology skills or if system design is the major reason for poor search results; i.e., Do current children's online catalog designs function in a manner that is compatible with information seeking by children? Although these results can not be generalized, this study indicates that there was a disconnect between the cognitive abilities of young users and catalog design. The study looked at search success on the 3 catalogs in relation to the catalog characteristics and individual user characteristics and makes 3 significant contributions to the field of library and information science. The …
Date:
August 2007
Creator:
Creel, Stacy
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Science and Technology: Information on Federal Programs and Interagency Efforts That Support Small Businesses Engaged in Manufacturing
A letter report issued by the Government Accountability Office with an abstract that begins "Small businesses engaged in manufacturing, typically those with 500 or fewer employees, comprise about 90 percent of all U.S. manufacturers and employ 6 million workers. Recent studies have shown that small manufacturing businesses face a number of challenges in their efforts to remain competitive, including the inability to obtain operating and investment capital, a lack of familiarity with new business practices, and difficulty in finding independent advice and skilled employees. To help these businesses overcome such challenges, many federal agencies provide financial and nonfinancial technical services through targeted or general programs or create interagency work groups to better coordinate their efforts and more effectively support these businesses. In this context, GAO identified (1) federal programs that provide services to support small businesses engaged in manufacturing and (2) federal interagency efforts that focus on issues of concern to small manufacturing businesses. To identify these programs and efforts, GAO obtained documentation from 19 federal agencies. In commenting on a draft of this report, 18 of the 19 agencies made technical comments that we have incorporated as appropriate. GAO is not making recommendations in this report."
Date:
May 18, 2007
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Massively parallel collaboration : a literature review.
The present paper explores group dynamics and electronic communication, two components of wicked problem solving that are inherent to the national security environment (as well as many other business environments). First, because there can be no ''right'' answer or solution without first having agreement about the definition of the problem and the social meaning of a ''right solution'', these problems (often) fundamentally relate to the social aspects of groups, an area with much empirical research and application still needed. Second, as computer networks have been increasingly used to conduct business with decreased costs, increased information accessibility, and rapid document, database, and message exchange, electronic communication enables a new form of problem solving group that has yet to be well understood, especially as it relates to solving wicked problems.
Date:
September 1, 2007
Creator:
Dornburg, Courtney C.; Stevens, Susan Marie; Davidson, George S. & Forsythe, James Chris
Object Type:
Report
System:
The UNT Digital Library
A mathematical framework for multiscale science and engineering : the variational multiscale method and interscale transfer operators.
This report is a collection of documents written as part of the Laboratory Directed Research and Development (LDRD) project A Mathematical Framework for Multiscale Science and Engineering: The Variational Multiscale Method and Interscale Transfer Operators. We present developments in two categories of multiscale mathematics and analysis. The first, continuum-to-continuum (CtC) multiscale, includes problems that allow application of the same continuum model at all scales with the primary barrier to simulation being computing resources. The second, atomistic-to-continuum (AtC) multiscale, represents applications where detailed physics at the atomistic or molecular level must be simulated to resolve the small scales, but the effect on and coupling to the continuum level is frequently unclear.
Date:
October 1, 2007
Creator:
Wagner, Gregory John (Sandia National Laboratories, Livermore, CA); Collis, Samuel Scott; Templeton, Jeremy Alan (Sandia National Laboratories, Livermore, CA); Lehoucq, Richard B.; Parks, Michael L.; Jones, Reese E. (Sandia National Laboratories, Livermore, CA) et al.
Object Type:
Report
System:
The UNT Digital Library
Metal fire implications for advanced reactors. Part 1, literature review.
Public safety and acceptance is extremely important for the nuclear power renaissance to get started. The Advanced Burner Reactor and other potential designs utilize liquid sodium as a primary coolant which provides distinct challenges to the nuclear power industry. Fire is a dominant contributor to total nuclear plant risk events for current generation nuclear power plants. Utilizing past experience to develop suitable safety systems and procedures will minimize the chance of sodium leaks and the associated consequences in the next generation. An advanced understanding of metal fire behavior in regards to the new designs will benefit both science and industry. This report presents an extensive literature review that captures past experiences, new advanced reactor designs, and the current state-of-knowledge related to liquid sodium combustion behavior.
Date:
October 1, 2007
Creator:
Nowlen, Steven Patrick; Radel, Ross F.; Hewson, John C.; Olivier, Tara Jean & Blanchat, Thomas K.
Object Type:
Report
System:
The UNT Digital Library
Chemical Information Bulletin, Volume 59, Number 1, Spring 2007
Periodic supplement for "the regular journals of the American Chemical Society," containing annotated bibliographies of chemical documentation literature as well as information about meetings, conferences, awards, scholarships, and other news from the American Chemical Society (ACS) Division of Chemical Literature.
Date:
Spring 2007
Creator:
American Chemical Society. Division of Chemical Information.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Chemical Information Bulletin, Volume 59, Number 2, Fall 2007
Periodic supplement for "the regular journals of the American Chemical Society," containing annotated bibliographies of chemical documentation literature as well as information about meetings, conferences, awards, scholarships, and other news from the American Chemical Society (ACS) Division of Chemical Literature.
Date:
Autumn 2007
Creator:
American Chemical Society. Division of Chemical Information.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Cross-language information retrieval using PARAFAC2.
A standard approach to cross-language information retrieval (CLIR) uses Latent Semantic Analysis (LSA) in conjunction with a multilingual parallel aligned corpus. This approach has been shown to be successful in identifying similar documents across languages - or more precisely, retrieving the most similar document in one language to a query in another language. However, the approach has severe drawbacks when applied to a related task, that of clustering documents 'language-independently', so that documents about similar topics end up closest to one another in the semantic space regardless of their language. The problem is that documents are generally more similar to other documents in the same language than they are to documents in a different language, but on the same topic. As a result, when using multilingual LSA, documents will in practice cluster by language, not by topic. We propose a novel application of PARAFAC2 (which is a variant of PARAFAC, a multi-way generalization of the singular value decomposition [SVD]) to overcome this problem. Instead of forming a single multilingual term-by-document matrix which, under LSA, is subjected to SVD, we form an irregular three-way array, each slice of which is a separate term-by-document matrix for a single language in the parallel …
Date:
May 1, 2007
Creator:
Bader, Brett William; Chew, Peter; Abdelali, Ahmed (New Mexico State University, Las Cruces, NM) & Kolda, Tamara Gibson
Object Type:
Report
System:
The UNT Digital Library
Water, law, science
In a world with water resources severely impacted bytechnology, science must actively contribute to water law. To this end,this paper is an earth scientist s attempt to comprehend essentialelements of water law, and to examine their connections to science.Science and law share a common logical framework of starting with apriori prescribed tenets, and drawing consistent inferences. In science,observationally established physical laws constitute the tenets, while inlaw, they stem from social values. The foundations of modern water law inEurope and the New World were formulated nearly two thousand years ago byRoman jurists who were inspired by Greek philosophy of reason.Recognizing that vital natural elements such as water, air, and the seawere governed by immutable natural laws, they reasoned that theseelements belonged to all humans, and therefore cannot be owned as privateproperty. Legally, such public property was to be governed by jusgentium, the law of all people or the law of all nations. In contrast,jus civile or civil law governed private property. Remarkably, jusgentium continues to be relevant in our contemporary society in whichscience plays a pivotal role in exploiting vital resources common to all.This paper examines the historical roots of modern water law, followstheir evolution through the centuries, and examines how …
Date:
October 17, 2007
Creator:
Narasimhan, T.N.
Object Type:
Article
System:
The UNT Digital Library
Examples of the Zeroth Theorem of the History of Science
The zeroth theorem of the history of science, enunciated byE. P. Fischer, states that a discovery (rule,regularity, insight) namedafter someone (often) did not originate with that person. I present fiveexamples from physics: the Lorentz condition partial muAmu = 0 definingthe Lorentz gauge of the electromagnetic potentials; the Dirac deltafunction, delta(x); the Schumann resonances of the earth-ionospherecavity; the Weizsacker-Williams method of virtual quanta; the BMTequation of spin dynamics. I give illustrated thumbnail sketches of boththe true and reputed discoverers and quote from their "discovery"publications.
Date:
August 24, 2007
Creator:
Jackson, J.D.
Object Type:
Article
System:
The UNT Digital Library
A Framework of Guidance for Building Good Digital Collections, 3rd Edition
The NISO Framework Working Group with support from the Institute of Museum and Library Services has released the third edition of A Framework of Guidance for Building Good Digital Collections. his Framework of Guidance for Building Good Digital Collections has three purposes: To provide an overview of some of the major components and activities involved in creating good digital collections. To identify existing resources that support the development of sound local practices for creating and managing good digital collections. To encourage community participation in the ongoing development of best practices for digital collection building. Each section sets out a set of principles with supporting documentation/resources.
Date:
2007
Creator:
National Information Standards Organization (U.S.) (NISO)
Object Type:
Book
System:
The UNT Digital Library
Modeling the role of blogging in librarianship
This phenomenological study examines the motivations and experiences of librarians who author professionally-focused Weblogs. I constructed a model of librarianship based on Wilson and Buckland. The results show a close fit between librarian bloggers and the ideals of the field as expressed by two primary library and information science philosophers. A Web survey generated 239 responses to demographic and open-ended questions. Using the results of the survey, I analyzed demographic data and performed a phenomenological analysis of the open-ended questions. A list of category responses was generated from each set of answers via the coding of descriptive words and phrases. Results indicated the motivations of librarian bloggers are based around themes of sharing, participation in community, and enhanced professional development. Respondents reported feeling more connected to the profession and to colleagues across the world because of blogging. Respondents perceived the librarian blogosphere as a community with both positive aspects - feedback, discussion, and support - and negative aspects - insular voices, divides between technologists and librarians, and generational rifts. Respondents also reported an increased ability to keep current, improved writing skills, and opportunities to speak and contribute to professional journals.
Date:
August 2007
Creator:
Stephens, Michael
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Beyond Structural Genomics for Plant Science
This book chapter provides an overview of the genomics and postgenomic technologies that are likely to have the greatest impacts on agronomy over the next 10-20 years and describes a number of case studies of their application.
Date:
September 14, 2007
Creator:
Dixon, R. A.; Bouton, Joseph H. (Joseph Henry), 1948-; Narasimhamoorthy, Brindha; Saha, Malay; Wang, Z.-Y. (Zeng-Yu), 1963- & May, Gregory D.
Object Type:
Book Chapter
System:
The UNT Digital Library
Climate Change: Science Update 2007
This report summarizes highlights of new scientific research and assessments released in 2007 related to global warming.
Date:
November 29, 2007
Creator:
Leggett, Jane A.
Object Type:
Report
System:
The UNT Digital Library
Science, Engineering, and Mathematics Education: Status and Issues
None
Date:
April 23, 2007
Creator:
Matthews, Christine M.
Object Type:
Report
System:
The UNT Digital Library
Reading selection as information seeking behavior: A case study with adolescent girls.
The aim of this research, Reading Selection as Information Seeking Behavior: A Case Study with Adolescent Girls, was to explore how the experience of reading fiction affects adolescent girls aged 13 through 15, and how that experience changes based upon four activities: journaling, blogging, a personal interview, and a focus group session. Each participant reflects upon works of her own choosing that she had recently read. The data is evaluated using content analysis with the goal of developing a relational analysis tool to be used and tested with future research projects. The goal of this research is to use the insights of the field of bibliotherapy together with the insights of the adolescent girls to provide a higher, more robust model of successful information behavior. That is, relevance is a matter of impact on life rather than just a match of subject heading. This work provides a thick description of a set of real world relevancy judgments. This may serve to illuminate theories and practices for bringing each individual seeker together with appropriate documents. This research offers a new model for relevant information seeking behavior associated with selecting works of essential instructional fiction, as well as a new definition for …
Date:
August 2007
Creator:
Reynolds, Stephanie D.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
TALC: A Simple C Language Extension For Improved Performance and Code Maintainability
None
Date:
December 20, 2007
Creator:
Keasler, J.; Jones, T. & Quinlan, D.
Object Type:
Article
System:
The UNT Digital Library
Technical Support and Transfer of Geothrmal Technical Knowledge and Information
The Geo-Heat Center (GHC) staff provided responses to 1442 technical support requests during the contract period (April 1, 2006 to September 30, 2007), which were six quarters under this contract. Our website, consisting of 1900 files, also contributes to our technical assistance activity. Downloaded files were 1,889,323 (3,448 per day) from our website, the total number of users was 1,365,258 (2,491 per day), and the total number of hits were 6,008,500 (10,064 per day). The GHC staff attended 60 workshops, short course and professional meeting and made 29 technical presentations. The staff also prepared and mailed out 2,000 copies of each of five issues of the GHC Quaterly Bulletin which contained 26 articles. We also mailed out approximately 5,000 papers and publications to interested individuals and organizations.
Date:
November 14, 2007
Creator:
Lund, John W. & Boyd, Tonya
Object Type:
Report
System:
The UNT Digital Library
A Language for Specifying Compiler Optimizations for Generic Software
None
Date:
December 17, 2007
Creator:
Willcock, J J
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Constitutive models in LAME.
The Library of Advanced Materials for Engineering (LAME) provides a common repository for constitutive models that can be used in computational solid mechanics codes. A number of models including both hypoelastic (rate) and hyperelastic (total strain) constitutive forms have been implemented in LAME. The structure and testing of LAME is described in Scherzinger and Hammerand ([3] and [4]). The purpose of the present report is to describe the material models which have already been implemented into LAME. The descriptions are designed to give useful information to both analysts and code developers. Thus far, 33 non-ITAR/non-CRADA protected material models have been incorporated. These include everything from the simple isotropic linear elastic models to a number of elastic-plastic models for metals to models for honeycomb, foams, potting epoxies and rubber. A complete description of each model is outside the scope of the current report. Rather, the aim here is to delineate the properties, state variables, functions, and methods for each model. However, a brief description of some of the constitutive details is provided for a number of the material models. Where appropriate, the SAND reports available for each model have been cited. Many models have state variable aliases for some or all …
Date:
September 1, 2007
Creator:
Hammerand, Daniel Carl & Scherzinger, William Mark
Object Type:
Report
System:
The UNT Digital Library