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Automatic Recording Unit

Description: From abstract: The PT-750 is designed to be used in conjunction with a production tester which requires automatic recording of test data. This manual provides a source of procedures and reference material necessary in automatic recording and in use of the PT-750.
Date: March 29, 1960
Creator: Ross, Frank A.
Partner: UNT Libraries Government Documents Department

Critical Infrastructure: Control Systems and the Terrorist Threat

Description: This report addresses the cyber-vulnerability of critical infrastructure industries which regularly use industrial control systems. Industrial control systems may be vulnerable to infiltration by different routes, including wireless transmission, direct access to control system computers, exploitation of dial-up modems used for maintenance, or through the Internet. This report will specifically discuss the potential for access to industrial control systems through the Internet.
Date: February 21, 2003
Creator: Shea, Dana A
Partner: UNT Libraries Government Documents Department

Critical Infrastructure: Control Systems and the Terrorist Threat

Description: This report addresses the cyber-vulnerability of critical infrastructure industries which regularly use industrial control systems. Industrial control systems may be vulnerable to infiltration by different routes, including wireless transmission, direct access to control system computers, exploitation of dial-up modems used for maintenance, or through the Internet. This report will specifically discuss the potential for access to industrial control systems through the Internet.
Date: April 23, 2003
Creator: Shea, Dana A
Partner: UNT Libraries Government Documents Department

Critical Infrastructure: Control Systems and the Terrorist Threat

Description: This report addresses the cyber-vulnerability of critical infrastructure industries which regularly use industrial control systems. Industrial control systems may be vulnerable to infiltration by different routes, including wireless transmission, direct access to control system computers, exploitation of dial-up modems used for maintenance, or through the Internet. This report will specifically discuss the potential for access to industrial control systems through the Internet.
Date: July 14, 2003
Creator: Shea, Dana A
Partner: UNT Libraries Government Documents Department

Critical Infrastructure: Control Systems and the Terrorist Threat

Description: This report addresses the cyber-vulnerability of critical infrastructure industries which regularly use industrial control systems. Industrial control systems may be vulnerable to infiltration by different routes, including wireless transmission, direct access to control system computers, exploitation of dial-up modems used for maintenance, or through the Internet. This report will specifically discuss the potential for access to industrial control systems through the Internet.
Date: October 1, 2002
Creator: Shea, Dana A
Partner: UNT Libraries Government Documents Department

Standards and Metadata Requirements for Computerization of Selected Mechanical Properties of Metallic Materials

Description: Abstract: To assist in building a computerized information system on the engineering properties of materials, the standards and metadata requirements for a representative group of mechanical property categories are considered. These categories include: tensile behavior, hardness numbers, notch-bar impact test parameters, and fatigue properties. For each property group, definitions of terms, synonyms (and non-synonyms), standard test methods, standards for reporting data, precision and accuracy, and correlations of properties are addressed. The principal findings and recommendations are as follows. Existing test methods are generally adequate for the properties considered, but better standards are needed for data reporting. Appraisal of materials variability and testing machine variability would be assisted by access to standard reference materials, certified as to their mechanical properties. All properties considered for inclusion in a computerized system can be categorized as parameters for direct search, parameters retrievable with extraction of all data stored for a given material, and parameters which are derived from an analytical representation of experimental data. Drafting of some general standards on computerized file structures and metadata files suitable for the engineering field is advised.
Date: August 1985
Creator: Westbrook, J. H.
Partner: UNT Libraries Government Documents Department

Information Storage and Retrieval Systems

Description: This thesis describes the implementation of a general purpose personal information storage and retrieval system. Chapter one contains an introduction to information storage and retrieval. Chapter two contains a description of the features a useful personal information retrieval system should contain. This description forms the basis for the implementation of the personal information storage and retrieval system described in chapter three. The system is implemented in UCSD Pascal on an Apple II microcomputer.
Date: May 1983
Creator: Creech, Teresa Adams
Partner: UNT Libraries

Geospatial Information and Geographic Information Systems (GIS): Current Issues and Future Challenges

Description: This report provides a primer on geospatial data and GIS and provides several examples of their use. The report discusses issues that may be of interest to Congress: sharing, coordination, and management of geospatial information, including examples of legislation. Finally, recommendations are included from several organizations for how to improve the coordination and management of geospatial information at the federal and state levels.
Date: June 8, 2009
Creator: Folger, Peter
Partner: UNT Libraries Government Documents Department

Federal Scientific and Technical Information in an Electronic Age: Opportunities and Challenges

Description: This report addresses several questions regarding the dissemination of scientific and technical information (STI). The paper answers these questions within a framework for an overall strategy on STI dissemination, and identifies key elements that could be useful in such a strategy.
Date: October 1989
Creator: United States. Congress. Office of Technology Assessment.
Partner: UNT Libraries Government Documents Department

Information technology needs of professional education faculty with the implications for the design of information technology systems

Description: This study identified determinants existing within the academic environment of professional education faculty that influence the development and implementation of an information technology system to support their professional endeavors. Such a system would encourage these faculty to integrate technology into their curriculum and, consequently, produce teacher graduates who could employ information technology effectively in teaching.
Date: August 1992
Creator: Lomerson, William L. (William Lough)
Partner: UNT Libraries

Yucca Mountain licensing support network archive assistant.

Description: This report describes the Licensing Support Network (LSN) Assistant--a set of tools for categorizing e-mail messages and documents, and investigating and correcting existing archives of categorized e-mail messages and documents. The two main tools in the LSN Assistant are the LSN Archive Assistant (LSNAA) tool for recategorizing manually labeled e-mail messages and documents and the LSN Realtime Assistant (LSNRA) tool for categorizing new e-mail messages and documents. This report focuses on the LSNAA tool. There are two main components of the LSNAA tool. The first is the Sandia Categorization Framework, which is responsible for providing categorizations for documents in an archive and storing them in an appropriate Categorization Database. The second is the actual user interface, which primarily interacts with the Categorization Database, providing a way for finding and correcting categorizations errors in the database. A procedure for applying the LSNAA tool and an example use case of the LSNAA tool applied to a set of e-mail messages are provided. Performance results of the categorization model designed for this example use case are presented.
Date: March 1, 2008
Creator: Dunlavy, Daniel M.; Bauer, Travis L.; Verzi, Stephen J.; Basilico, Justin Derrick & Shaneyfelt, Wendy
Partner: UNT Libraries Government Documents Department

Cross-language information retrieval using PARAFAC2.

Description: 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 corpus. The goal is to compute an SVD for each language such that V (the matrix of right singular vectors) is the same across all languages. Effectively, PARAFAC2 imposes the constraint, not present in standard LSA, that the 'concepts' in all documents in the parallel corpus are the same regardless of language. Intuitively, this constraint makes sense, since the whole purpose of using a parallel corpus is that exactly the same concepts are expressed in the translations. We tested this approach by comparing the performance of PARAFAC2 with standard LSA in solving a particular CLIR problem. From our results, we ...
Date: May 1, 2007
Creator: Bader, Brett William; Chew, Peter; Abdelali, Ahmed (New Mexico State University, Las Cruces, NM) & Kolda, Tamara Gibson
Partner: UNT Libraries Government Documents Department

QCS : a system for querying, clustering, and summarizing documents.

Description: Information retrieval systems consist of many complicated components. Research and development of such systems is often hampered by the difficulty in evaluating how each particular component would behave across multiple systems. We present a novel hybrid information retrieval system--the Query, Cluster, Summarize (QCS) system--which is portable, modular, and permits experimentation with different instantiations of each of the constituent text analysis components. Most importantly, the combination of the three types of components in the QCS design improves retrievals by providing users more focused information organized by topic. We demonstrate the improved performance by a series of experiments using standard test sets from the Document Understanding Conferences (DUC) along with the best known automatic metric for summarization system evaluation, ROUGE. Although the DUC data and evaluations were originally designed to test multidocument summarization, we developed a framework to extend it to the task of evaluation for each of the three components: query, clustering, and summarization. Under this framework, we then demonstrate that the QCS system (end-to-end) achieves performance as good as or better than the best summarization engines. Given a query, QCS retrieves relevant documents, separates the retrieved documents into topic clusters, and creates a single summary for each cluster. In the current implementation, Latent Semantic Indexing is used for retrieval, generalized spherical k-means is used for the document clustering, and a method coupling sentence ''trimming'', and a hidden Markov model, followed by a pivoted QR decomposition, is used to create a single extract summary for each cluster. The user interface is designed to provide access to detailed information in a compact and useful format. Our system demonstrates the feasibility of assembling an effective IR system from existing software libraries, the usefulness of the modularity of the design, and the value of this particular combination of modules.
Date: August 1, 2006
Creator: Dunlavy, Daniel M.
Partner: UNT Libraries Government Documents Department

Big Data in U.S. Agriculture

Description: This report discusses big data within the context of agriculture. Many observers predict that the growth of big data will bring positive benefits through enhanced production, resource efficiency, and improved adaptation to climate change. While lauded for its potentially revolutionary applications, big data is not without issues. From a policy perspective, issues related to big data involve nearly every stage of its existence, including its collection (how it is captured), management (how it is stored and managed), and use (how it is analyzed and used). It is still unclear how big data will progress within agriculture due to technical and policy challenges, such as privacy and security, for producers and policymakers. As Congress follows the issue, a number of questions may arise, including a principal one--what is the federal role?
Date: January 6, 2016
Creator: Stubbs, Megan
Partner: UNT Libraries Government Documents Department

Photovoltaic Applications Definition and Photovoltaic System Definition Study in the Agricultural Sector: Volume 2, Technical Results

Description: From introduction: The objectives of the technical effort are to identify and characterize agricultural energy demands that can effectively use P/V power systems and to determine performance and cost-estimates for the designs.
Date: May 1980
Creator: BDM Corporation
Partner: UNT Libraries Government Documents Department

Photovoltaic Applications Definition and Photovoltaic System Definition Study in the Agricultural Sector: Volume 3, Appendixes

Description: Forward: The Final Report summarizes the findings and project work in conjunction with the "Photovoltaic" Applications Definition and Photovoltaic System Definition Study in the Agricultural Sector" under Contract Number 07-6951.
Date: May 1980
Creator: BDM Corporation
Partner: UNT Libraries Government Documents Department

Interrelational laboratory information system for data storage and retrieval

Description: The necessity for a functional user friendly laboratory data management program has become evident as the quantity of information required for modern scientific research has increased to to titanic proportions. The required union of strong computer power, ease of operation, and adaptability have until recently been outside the realm of most research laboratories. This study examines the Apple Macintosh computer program Hypercard as an interactive laboratory information system that is user-friendly, cost effective, and adaptable to the changing demands within a modern molecular or microbiology.
Date: August 1989
Creator: Gregory, Michael W. (Michael Walter)
Partner: UNT Libraries

The Design and Implementation of an Intelligent Agent-Based File System

Description: As bandwidth constraints on LAN/WAN environments decrease, the demand for distributed services will continue to increase. In particular, the proliferation of user-level applications requiring high-capacity distributed file storage systems will demand that such services be universally available. At the same time, the advent of high-speed networks have made the deployment of application and communication solutions based upon an Intelligent Mobile Agent (IMA) framework practical. Agents have proven to present an ideal development paradigm for the creation of autonomous large-scale distributed systems, and an agent-based communication scheme would facilitate the creation of independently administered distributed file services. This thesis thus outlines an architecture for such a distributed file system based upon an IMA communication framework.
Date: May 2000
Creator: Hopper, S. Andrew
Partner: UNT Libraries

A Study of Graphically Chosen Features for Representation of TREC Topic-Document Sets

Description: Document representation is important for computer-based text processing. Good document representations must include at least the most salient concepts of the document. Documents exist in a multidimensional space that difficult the identification of what concepts to include. A current problem is to measure the effectiveness of the different strategies that have been proposed to accomplish this task. As a contribution towards this goal, this dissertation studied the visual inter-document relationship in a dimensionally reduced space. The same treatment was done on full text and on three document representations. Two of the representations were based on the assumption that the salient features in a document set follow the chi-distribution in the whole document set. The third document representation identified features through a novel method. A Coefficient of Variability was calculated by normalizing the Cartesian distance of the discriminating value in the relevant and the non-relevant document subsets. Also, the local dictionary method was used. Cosine similarity values measured the inter-document distance in the information space and formed a matrix to serve as input to the Multi-Dimensional Scale (MDS) procedure. A Precision-Recall procedure was averaged across all treatments to statistically compare them. Treatments were not found to be statistically the same and the null hypotheses were rejected.
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Date: May 2000
Creator: Oyarce, Guillermo Alfredo
Partner: UNT Libraries