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Description: In accord with recent custom, the organizing committee for this conference has scheduled this review paper on beam instabilities. In view of the various review papers which already exist and the fact that the fundamentals of the subject have even been treated in a textbook, I thought this paper might best be devoted to a limited part of the rather large field of beam instabilities. Thus, I have selected only an aspect of the general subject, but an aspect which has during the last years been very much at the center of activity, and will--if my judgment is correct--be even more so in the years to come. I wish to concentrate, here, on the interaction of a relativistic particle beam with itself which is a result of the coupling of the beam with its surroundings. Before approaching this topic, a few remarks on the existing review papers are in order. A comprehensive treatment of beam instabilities may be found in Ref. 1, where, also, the reader will find some 48 references to the original literature. In Refs. 2 and 3, the General subject is approached from other points of view. Reference 4 is concerned with some special topics, but treats them in depth; and the text of Ref. 5 closely follows the original papers.
Date: February 1, 1971
Creator: Sessler, Andrew M.
Partner: UNT Libraries Government Documents Department

An Analysis of the Progress of Unions in Organizing Professional Engineers

Description: The problems of this research report were threefold: 1. To trace the history of the unionization of engineers from its inception to the present time. 2. To present the arguments of those individuals and groups who practice and favor engineering unionization, and to set fort the counter-arguments of those individuals and groups who reject unionization for engineers. 3. To summarize the facts and opinions discovered and, in view of these findings, to draw conclusions on the merits and the trend of engineering unionization.
Date: 1956
Creator: Montgomery, Austin H.
Partner: UNT Libraries

Rapid Exploitation and Analysis of Documents

Description: Analysts are overwhelmed with information. They have large archives of historical data, both structured and unstructured, and continuous streams of relevant messages and documents that they need to match to current tasks, digest, and incorporate into their analysis. The purpose of the READ project is to develop technologies to make it easier to catalog, classify, and locate relevant information. We approached this task from multiple angles. First, we tackle the issue of processing large quantities of information in reasonable time. Second, we provide mechanisms that allow users to customize their queries based on latent topics exposed from corpus statistics. Third, we assist users in organizing query results, adding localized expert structure over results. Forth, we use word sense disambiguation techniques to increase the precision of matching user generated keyword lists with terms and concepts in the corpus. Fifth, we enhance co-occurrence statistics with latent topic attribution, to aid entity relationship discovery. Finally we quantitatively analyze the quality of three popular latent modeling techniques to examine under which circumstances each is useful.
Date: November 28, 2011
Creator: Buttler, D J; Andrzejewski, D; Stevens, K D; Anastasiu, D & Gao, B
Partner: UNT Libraries Government Documents Department

Ready, set...go!

Description: The objectives of this paper are: (1) Discuss organizational readiness for changes in an ergonomics program or intervention; (2) Assessing organizational readiness; (3) Benefits and challenges of change; and (4) Case studies of ergonomic programs that were 'not ready' and 'ready'.
Date: June 16, 2010
Creator: Alexandre, Melanie
Partner: UNT Libraries Government Documents Department

Methodologies and Metrics for Assessing the Strength of Relationships between Entities within Semantic Graphs

Description: Semantic graphs are becoming a valuable tool for organizing and discovering information in an increasingly complex analysis environment. This paper investigates the use of graph topology to measure the strength of relationships in a semantic graph. These relationships are comprised of some number of distinct paths, whose length and configuration jointly characterize the strength of association. We explore these characteristics through the use of three distinct algorithms respectively based upon an electrical conductance model, Newman and Girvan's measure of betweenness [5], and cutsets. Algorithmic performance is assessed based upon a collection of partially ordered subgraphs which were constructed according to our subjective beliefs regarding strength of association.
Date: September 29, 2005
Creator: Hickling, T L & Hanley, W G
Partner: UNT Libraries Government Documents Department

National Set of Hydrogen Codes and Standards for the US (Presentation)

Description: The US has a national set of codes and standards that address the use of hydrogen technologies. These documents are published by several organizations and are not all directly adopted by government authorities. The US Department of Energy (DOE) has acted as the central organizing group to identify these documents and present them as a coherent and integrated set of requirements.
Date: September 16, 2009
Creator: Rivkin, C. H.
Partner: UNT Libraries Government Documents Department

2005 DOE Computer Graphics Forum Site Survey

Description: The Information Management and Graphics Group supports and develops tools that enhance our ability to access, display, and understand large, complex data sets. Activities include developing visualization software for terascale data exploration; running two video production labs; supporting graphics libraries and tools for end users; maintaining four PowerWalls and assorted other advanced displays; and providing integrated tools for searching, organizing, and browsing scientific data. The Data group supports Defense and Nuclear technologies (D&NT) Directorate. The group's visualization team has developed and maintains two visualization tools: MeshTV and VisIt. These are interactive graphical analysis tools for visualizing and analyzing data on two- and three-dimensional meshes. They also provide movie production support. Researchers in the Center for Applied Scientific Computing (CASC) work on various projects including the development of visualization and data mining techniques for terascale data exploration that are funded by ASC. The researchers also have LDRD projects and collaborations with other lab researchers, academia, and industry.
Date: April 15, 2005
Creator: Rebecca, S & Eric, B
Partner: UNT Libraries Government Documents Department

Annotated Bibliography for the DEWPOINT project

Description: This bibliography covers aspects of the Detection and Early Warning of Proliferation from Online INdicators of Threat (DEWPOINT) project including 1) data management and querying, 2) baseline and advanced methods for classifying free text, and 3) algorithms to achieve the ultimate goal of inferring intent from free text sources. Metrics for assessing the quality and correctness of classification are addressed in the second group. Data management and querying include methods for efficiently storing, indexing, searching, and organizing the data we expect to operate on within the DEWPOINT project.
Date: April 21, 2009
Creator: Oehmen, Christopher S.
Partner: UNT Libraries Government Documents Department

Rural Energy Conference Project

Description: Alaska remains, even at the beginning of the 21st century, a place with many widely scattered, small, remote communities, well beyond the end of both the road system and the power grid. These communities have the highest energy costs of any place in the United States, despite the best efforts of the utilities that service them. This is due to the widespread dependence on diesel electric generators, which require small capital investments, but recent increases in crude oil prices have resulted in dramatic increases in the cost of power. In the enabling legislation for the Arctic Energy Office in 2001, specific inclusion was made for the study of ways of reducing the cost of electrical power in these remote communities. As part of this mandate, the University of Alaska has, in conjunction with the US Department of Energy, the Denali Commission and the Alaska Energy Authority, organized a series of rural energy conferences, held approximately every 18 months. The goal of these meeting was to bring together rural utility operators, rural community leaders, government agency representatives, equipment suppliers, and researchers from universities and national laboratories to discuss the current state of the art in rural power generation, to discuss current projects, including successes as well as near successes. Many of the conference presenters were from industry and not accustomed to writing technical papers, so the typical method of organizing a conference by requesting abstracts and publishing proceedings was not considered viable. Instead, the organizing committee solicited presentations from appropriate individuals, and requested that (if they were comfortable with computers) prepare Power point presentations that were collected and posted on the web. This has become a repository of many presentations, and may be the best single source of information about current projects in the state of Alaska.
Date: December 31, 2008
Creator: Witmer, Dennis & Watson, Shannon
Partner: UNT Libraries Government Documents Department

Self organizing software research : LDRD final report.

Description: We have made progress in developing a new statistical mechanics approach to designing self organizing systems that is unique to SNL. The primary application target for this ongoing research has been the development of new kinds of nanoscale components and hardware systems. However, this research also enables an out of the box connection to the field of software development. With appropriate modification, the collective behavior physics ideas for enabling simple hardware components to self organize may also provide design methods for a new class of software modules. Our current physics simulations suggest that populations of these special software components would be able to self assemble into a variety of much larger and more complex software systems. If successful, this would provide a radical (disruptive technology) path to developing complex, high reliability software unlike any known today. This high risk, high payoff opportunity does not fit well into existing SNL funding categories, as it is well outside of the mainstreams of both conventional software development practices and the nanoscience research area that spawned it. This LDRD effort was aimed at developing and extending the capabilities of self organizing/assembling software systems, and to demonstrate the unique capabilities and advantages of this radical new approach for software development.
Date: January 1, 2004
Creator: Osbourn, Gordon Cecil
Partner: UNT Libraries Government Documents Department

National Incident Management System (NIMS) Standards Review Panel Workshop Summary Report

Description: The importance and need for full compliant implementation of NIMS nationwide was clearly demonstrated during the Hurricane Katrina event, which was clearly expressed in Secretary Chertoff's October 4, 2005 letter addressed to the State's governors. It states, ''Hurricane Katrina was a stark reminder of how critical it is for our nation to approach incident management in a coordinated, consistent, and efficient manner. We must be able to come together, at all levels of government, to prevent, prepare for, respond to, and recover from any emergency or disaster. Our operations must be seamless and based on common incident management doctrine, because the challenges we face as a nation are far greater than capabilities of any one jurisdiction.'' The NIMS is a system/architecture for organizing response on a ''national'' level. It incorporations ICS as a main component of that structure (i.e., it institutionalizes ICS in NIMS). In a paper published on the NIMS Website, the following statements were made: ''NIMS represents a core set of doctrine, principles, terminology, and organizational processes to enable effective, efficient and collaborative incident management at all levels. To provide the framework for interoperability and compatibility, the NIMS is based on a balance between flexibility and standardization.'' Thus the NIC is challenged with the need to adopt quality SDO generated standards to support NIMS compliance, but in doing so maintain the flexibility necessary so that response operations can be tailored for the specific jurisdictional and geographical needs across the nation. In support of this large and complex challenge facing the NIC, the Pacific Northwest National Laboratory (PNNL) was asked to provide technical support to the NIC, through their DHS Science and Technology ? Standards Portfolio Contract, to help identify, review, and develop key standards for NIMS compliance. Upon examining the challenge, the following general process appears to be ...
Date: February 7, 2006
Creator: Stenner, Robert D.; Kirk, Jennifer L.; Stanton, James R.; Shebell, Peter; Schwartz, Deborah S.; Judd, Kathleen S. et al.
Partner: UNT Libraries Government Documents Department

The KONVERGENCE Model for Sustainable Decisions

Description: The KONVERGENCE Model for Sustainable Decisions is a new way of viewing, developing, organizing, and evaluating alternatives for decisions that may affect a wide range of interests and that must factor in long timeframes, enduring hazards, and/or continuing responsibilities. It differs from other models in that it addresses the need for decisions to continue to "work" over long time periods in an ever-changing decision environment. The authors show that the model contains three major universes - knowledge, values, and resources (the K, V, and R in KONVERGENCE)- that interact and overlap throughout the effective lifetime of a decision. They discuss how decision-makers and decision participants can use the model to craft and analyze decisions and decision processes that stand the test of time. The authors use the U.S. moon-landing program as an example of a major decision process that was sustained over time. They use the model to explain why events unfolded in the way that they did - and why we are where we are today in that program. The authors believe that this model will be especially useful in long-term decision processes such as those that address contamination cleanup programs, long-term environmental stewardship, and the initial siting of facilities with long-term objectives. Companion papers describe the KONVERGENCE Model process steps and implications for intractable cleanup decisions.
Date: August 1, 2002
Creator: Kerr, Thomas A.; Dakins, Maxine; Gibson, Patrick Lavern; Joe, Jeffrey Clark; Nitschke, Robert Leon & Piet, Steven James
Partner: UNT Libraries Government Documents Department

Chemistry and Materials Science Directorate Annual Report 2003

Description: Evolving challenges and solid accomplishments define the year 2003 for us. Our scientific breakthroughs validate our strategic directions and reaffirm our critical role in fulfilling the Laboratory's missions. Our growth continues in new research projects and significant new programmatic support. Our mission is clear: to enable the Laboratory to accomplish its primary mission through excellence in the chemical and materials sciences. The directorate's common theme and determination has remained constant: Deliver on our commitments, while anticipating and capitalizing on opportunities through innovation in science and technology. In this, the 2003 Annual Report, we describe how our science is built around a strategic plan with four organizing themes, each with key scientific accomplishments by our staff and collaborators. Our strategic plan is synergistic with the Laboratory's Long-Range Science and Technology Plan, which identifies six areas of institutional research and development strategy. This 2003 CMS Annual Report is organized into two major sections: research themes and dynamic teams. The research-theme section addresses challenges, achievements, and new frontiers within each of the four research themes. The dynamic-teams section illustrates the directorate's organizational structure of divisions, centers, and institutes that supports a team environment across disciplinary and institutional boundaries. The research presented gives substantive examples of how we are proceeding in each of these four theme areas and how they are aligned with the institutional strategy. Our organizational structure offers an environment of collaborative problem-solving opportunities, an environment that attracts and retains the best and the brightest from across the Laboratory and around the world.
Date: April 21, 2004
Creator: Diaz de la Rubia, T; Shang, S P; Kitrinos, G A; Fluss, M; Westbrook, C & Rennie, G
Partner: UNT Libraries Government Documents Department

Development of high performance scientific components for interoperability of computing packages

Description: Three major high performance quantum chemistry computational packages, NWChem, GAMESS and MPQC have been developed by different research efforts following different design patterns. The goal is to achieve interoperability among these packages by overcoming the challenges caused by the different communication patterns and software design of each of these packages. A chemistry algorithm is hard to develop as well as being a time consuming process; integration of large quantum chemistry packages will allow resource sharing and thus avoid reinvention of the wheel. Creating connections between these incompatible packages is the major motivation of the proposed work. This interoperability is achieved by bringing the benefits of Component Based Software Engineering through a plug-and-play component framework called Common Component Architecture (CCA). In this thesis, I present a strategy and process used for interfacing two widely used and important computational chemistry methodologies: Quantum Mechanics and Molecular Mechanics. To show the feasibility of the proposed approach the Tuning and Analysis Utility (TAU) has been coupled with NWChem code and its CCA components. Results show that the overhead is negligible when compared to the ease and potential of organizing and coping with large-scale software applications.
Date: December 1, 2008
Creator: Gulabani, Teena Pratap
Partner: UNT Libraries Government Documents Department

The organizing principle: microenvironmental influences in the normal and malignant breast

Description: The current paradigm for cancer initiation and progression rests on the groundbreaking discoveries of oncogenes and tumor suppressor genes. This framework has revealed much about the role of genetic alterations in the underlying signaling pathways central to normal cellular function and to tumor progression. However, it is clear that single gene theories or even sequential acquisition of mutations underestimate the nature of the genetic and epigenetic changes in tumors, and do not account for the observation that many cancer susceptibility genes (e.g. BRCA1, APC) show a high degree of tissue specificity in their association with neoplastic transformation. Therefore, the cellular and tissue context itself must confer additional and crucial information necessary for mutated genes to exert their influence. A considerable body of evidence now shows that cell - cell and cell - extracellular matrix (ECM) interactions are essential organizing principles that help define the nature of the tissue context, and play a crucial role in regulating homeostasis and tissue specificity. How this context determines functional integrity, and how its loss can lead to malignancy, appears to have much to do with tissue structure and polarity.
Date: August 20, 2002
Creator: Bissell, Mina; Radisky, Derek C.; Rizki, Aylin; Weaver, Valerie M. & Petersen, Ole W.
Partner: UNT Libraries Government Documents Department

Rap1 integrates tissue polarity, lumen formation, and tumorigenicpotential in human breast epithelial cells

Description: Maintenance of apico-basal polarity in normal breast epithelial acini requires a balance between cell proliferation, cell death, and proper cell-cell and cell-extracellular matrix signaling. Aberrations in any of these processes can disrupt tissue architecture and initiate tumor formation. Here we show that the small GTPase Rap1 is a crucial element in organizing acinar structure and inducing lumen formation. Rap1 activity in malignant HMT-3522 T4-2 cells is appreciably higher than in S1 cells, their non-malignant counterparts. Expression of dominant-negative Rap1 resulted in phenotypic reversion of T4-2 cells, led to formation of acinar structures with correct apico-basal polarity, and dramatically reduced tumor incidence despite the persistence of genomic abnormalities. The resulting acini contained prominent central lumina not observed when other reverting agents were used. Conversely, expression of dominant-active Rap1 in T4-2 cells inhibited phenotypic reversion and led to increased invasiveness and tumorigenicity. Thus, Rap1 acts as a central regulator of breast architecture, with normal levels of activation instructing apical polarity during acinar morphogenesis, and increased activation inducing tumor formation and progression to malignancy.
Date: September 29, 2006
Creator: Itoh, Masahiko; Nelson, Celeste M.; Myers, Connie A. & Bissell,Mina J.
Partner: UNT Libraries Government Documents Department

Workshop on Excellence Empowered by a Diverse Academic Workforce: Achieving Racial & Ethnic Equity in Chemistry

Description: The purpose of the Workshop 'Excellence Empowered by a Diverse Academic Workforce: Achieving Racial & Ethnic Equity in Chemistry' was to promote the development of a cadre of academic leaders who create, implement and promote programs and strategies for increasing the number of racial and ethnic minorities to equitable proportions on the faculties of departments throughout the academic chemistry community. An important objective of the workshop was to assist in creating an informed and committed community of chemistry leaders who will create, implement and promote programs and strategies to advance racial and ethnic equity in both the faculty and the student body with the goal of increasing the number of U.S. citizen underrepresented minorities (URM) participating in academic chemistry at all levels, with particular focus on the pipeline to chemistry faculty. This objective was met by (1) presentations of detailed data describing current levels of racial and ethnic minorities on the faculties of chemistry departments; (2) frank discussion of the obstacles to and benefits of racial/ethnic diversity in the chemistry professoriate; (3) summary of possible effective interventions and actions; and (4) promotion of the dissemination and adoption of initiatives designed to achieve racial/ethnic equity. Federal programs over the past thirty years have been instrumental in delivering to our universities URM students intending to major in the physical sciences such as chemistry. However, the near absence of URM faculty means that there is also an absence of URM as role models for aspiring students. For example, citing 2003 as a representative year, some statistics reveal the severity of the pipeline shrinkage for U. S. citizen URM starting from chemistry B.S. degrees awarded to the appointment to chemistry faculty. Compared to the URM population of approximately 30% for that year, 67% of the B.S. degrees in chemistry were awarded to white citizens ...
Date: February 13, 2008
Creator: Ali, Hassan. B.
Partner: UNT Libraries Government Documents Department


Description: Stripper gas wells are an important source of domestic energy supply and under constant threat of permanent loss (shut-in) due to marginal economics. In 1998, 192 thousand stripper gas wells produced over a Tcf of gas, at an average rate of less than 16 Mcfd. This represents about 57% of all producing gas wells in the onshore lower-48 states, yet only 8% of production. Reserves of stripper gas wells are estimated to be only 1.6 Tcf, or slightly over 1% of the onshore lower-48 total (end of year 1996 data). Obviously, stripper gas wells are at the very margin of economic sustenance. As the demand for natural gas in the U.S. grows to the forecasted estimate of over 30 Tcf annually by the year 2010, supply from current conventional sources is expected to decline. Therefore, an important need exists to fully exploit known domestic resources of natural gas, including those represented by stripper gas wells. The overall objectives of this project are to develop an efficient and low-cost methodology to broadly categorize the well performance characteristics for a stripper gas field, identify the high-potential candidate wells for remediation, and diagnose the specific causes for well underperformance. With this capability, stripper gas well operators can more efficiently and economically produce these resources and maximize these gas reserves. A further objective is to identify/develop, evaluate and test ''new and novel,'' economically viable remediation options. Finally, it is the objective of this project that all the methods and technologies developed in this project, while being tested in the Mid-Continent, be widely applicable to stripper gas wells of all types across the country. The project activities during the reporting period were: (1) The search for another field site was abandoned after discussion with DOE. There is a clear absence of willing industry partners to ...
Date: March 1, 2003
Creator: Reeves, Scott
Partner: UNT Libraries Government Documents Department

Web document clustering using hyperlink structures

Description: With the exponential growth of information on the World Wide Web there is great demand for developing efficient and effective methods for organizing and retrieving the information available. Document clustering plays an important role in information retrieval and taxonomy management for the World Wide Web and remains an interesting and challenging problem in the field of web computing. In this paper we consider document clustering methods exploring textual information hyperlink structure and co-citation relations. In particular we apply the normalized cut clustering method developed in computer vision to the task of hyperdocument clustering. We also explore some theoretical connections of the normalized-cut method to K-means method. We then experiment with normalized-cut method in the context of clustering query result sets for web search engines.
Date: May 7, 2001
Creator: He, Xiaofeng; Zha, Hongyuan; Ding, Chris H.Q & Simon, Horst D.
Partner: UNT Libraries Government Documents Department