Digital Commons Network^™

Rotational Quenching Rate Coefficients For H2 In Collisions With H2 From 2 To 10,000 K, T.-G. Lee, N. Balakrishnan, R. C. Forrey, P. C. Stancil, G. Shaw, D. R. Schultz, Gary J. Ferland

Physics and Astronomy Faculty Publications

Rate coefficients for rotational transitions in H₂ induced by H₂ impact are presented. Extensive quantum mechanical coupled-channel calculations based on a recently published (H₂)₂ potential energy surface were performed. The potential energy surface used here has been demonstrated to be more reliable than surfaces used in previous work. Rotational transition cross sections with initial levels of J≤8 were computed for collision energies ranging between 10^-4 and 2.5 eV, and the corresponding rate coefficients were calculated for the temperature range 2≤T≤10,000 K. In general, agreement with earlier calculations, which were limited to 100-6000 K, …

Dynamic Load Balancing Of Virtual Machines Hosted On Xen, Terry Clyde Wilcox

Theses and Dissertations

Currently systems of virtual machines are load balanced statically which can create load imbalances for systems where the load changes dynamically over time. For throughput and response time of a system to be maximized it is necessary for load to be evenly distributed among each part of the system. We implement a prototype policy engine for the Xen virtual machine monitor which can dynamically load balance virtual machines. We compare the throughput and response time of our system using the cpu2000 and the WEB2005 benchmarks from SPEC. Under the loads we tested, dynamic load balancing had 5%-8% higher throughput than …

Secureqemu: Emulation-Based Software Protection Providing Encrypted Code Execution And Page Granularity Code Signing, William B. Kimball

Theses and Dissertations

This research presents an original emulation-based software protection scheme providing protection from reverse code engineering (RCE) and software exploitation using encrypted code execution and page-granularity code signing, respectively. Protection mechanisms execute in trusted emulators while remaining out-of-band of untrusted systems being emulated. This protection scheme is called SecureQEMU and is based on a modified version of Quick Emulator (QEMU) [5]. RCE is a process that uncovers the internal workings of a program. It is used during vulnerability and intellectual property (IP) discovery. To protect from RCE program code may have anti-disassembly, anti-debugging, and obfuscation techniques incorporated. These techniques slow the …

Direct Distance Measurement To The Dusty White Dwarf Gd 362, Mukremin Kilic, John R. Thorstensen, D. Koester

Dartmouth Scholarship

We present trigonometric parallax observations of GD 362 obtained over seven epochs using the MDM 2.4m Hiltner Telescope. The existence of a dust disk around this possibly massive white dwarf makes it an interesting target for parallax observations. The measured parallax for GD 362 places it at a distance of 50.6 pc, which implies that its radius and mass are ~ 0.0106 Rsun and 0.71 Msun, respectively. GD 362 is not as massive as initially thought (1.2Msun). Our results are entirely consistent with the distance and mass estimates (52.2 pc and 0.73 Msun) by Zuckerman et al., who demonstrated that …

The Legacy, December 10, 2008, Lindenwood University

The Legacy (2007-2018)

Student Newspaper of Lindenwood University

A Multizone Model For Simulating The High-Energy Variability Of Tev Blazars, Philip B. Graff, Markos Georganopoulos, Eric S. Perlman, Demosthenes Kazanas

Aerospace, Physics, and Space Science Faculty Publications

We present a time-dependent multizone code for simulating the variability of synchrotron self-Compton (SSC) sources. The code adopts a multizone pipe geometry for the emission region, appropriate for simulating emission from a standing or propagating shock in a collimated jet. Variations in the injection of relativistic electrons in the inlet propagate along the length of the pipe, cooling radiatively. Our code for the first time takes into account the nonlocal, time-retarded nature of SSC losses that are thought to be dominant in TeV blazars. The observed synchrotron and SSC emission is followed self-consistently, taking into account light-travel time delays. At …

New Museum Theory In Practice: A Case Study Of The American Visionary Art Museum And The Representation Of Disability, Amanda Bryan

Theses and Dissertations

Since the inception of new museum theory, and the emphasis it places on the social purpose of museums within society, museum professionals and museum studies theorists have struggled to define what role museums must take in combating prejudices and fostering better understating of difference. Richard Sandell is one such theorist who writes about the importance of, and need for, greater inclusion of disabled artists and works of art containing themes of disability into exhibitions and display. This thesis examines Sandell’s scholarship, noting its foundation in new museum theory and disability studies, and then, employing a case study of the American …

It's Happening At State: December 10, 2008

It's Happening at State

Provides summary information of news and events of interest to the faculty and staff of NDSU.

Emotional Disturbance As An Educational Disability: Implications For Social Workers, Jean Michele Rippey

Open Access Dissertations

This qualitative study addressed an intersection in which the application of the medical model to educational disabilities and its implications for educational labeling of students interacted with the professional enculturation of clinical social workers. Employed as clinicians in programs administered in a large south eastern school district in the United States, five social workers served elementary students labeled Emotionally/Behaviorally Disabled (EBD) through federally authorized provisions for special education related services. This study used grounded theory methods to discover and analyze the social workers' underlying assumptions, values, and patterns of practice with regard to ethical and guild issues, roles and responsibilities, …

The Evolution Of The Carbonate Shelf Margins And Fill Of The Antler Foreland Basin By Prograding Mississippian Carbonates, Northern U.S. Rockies, Matthew Robert Buoniconti

Open Access Dissertations

The aims of this study are to extend the established high-resolution sequence stratigraphic framework of the Madison Formation of Wyoming and southern central Montana to the correlative and genetically-related Mississippian carbonate ramp, ramp margin, and basin strata of the central Montana trough and Antler foreland basin in order to examine and discriminate the controls on depositional processes and the resulting stratigraphic architecture through space and time in tectonically-active settings. An outcrop-based, high-resolution sequence stratigraphic study of two ramp-to-basin transects, one in central Montana and the other in southwestern Montana and east-central Idaho, is conducted in order to examine these deposits …

Re-Reading Weber In Law And Development: A Critical Intellectual History Of "Good Governance" Reform, Chantal Thomas

Cornell Law Faculty Publications

The "Weberianism" of the modern age derives from the influence of three theoretical concepts in Weber's work. First, Weber described the development of "logically formal rationality" in governance as central to the rise of Western capitalist democracy. Second, Weber posited that Protestant religious ethics had helped to promote certain economic behaviors associated with contemporary capitalism. Third, Weber identified the rise of bureaucratic governance, as the primary means of realizing logically formal rationality, as distinctly modern.

This essay examines the influence of these basic insights on discourse on legal reform in developing countries. The prioritization of legal and institutional reforms to …

Materials For Freezing Light, Arthur Ballato, John Ballato

Clemson Patents

Recent theoretical investigations have predicted the existence of axially frozen modes that arise when light is incident upon an anisotropic two-dimensional photonic crystal. Such electromagnetic modes are of interest since they suggest a near-zero group velocity with extraordinary amplitudes. The present invention addresses the crystal physics associated with realizing such effects and provides for the development of materials suitable for use in the forming photonic crystals that can exhibit such effects.

December 9, 2008, Council On Teacher Education

Minutes

No abstract provided.

Spartan Daily, December 9, 2008, San Jose State University, School Of Journalism And Mass Communications

Spartan Daily (School of Journalism and Mass Communications)

Volume 131, Issue 52

Northeast Passage Hosts Power Soccer Scrimmage On Saturday, Dec. 13, Keely Ames

Media Relations

No abstract provided.

The Bg News December 9, 2008, Bowling Green State University

BG News (Student Newspaper)

The BGSU campus student newspaper. December 9, 2008. Volume 99-Issue 69.

Early Post-Fire Recovery On A Heavily Visited Mojave Desert Burn: Red Rock Canyon Near Las Vegas, Nevada, Scott R. Abella, E. Cayenne Engel, Christina L. Lund, Jessica E. Spencer

Fire Science Presentations

Wildfire has become widespread in southwestern USA deserts. In a record 2005 fire season in the Mojave Desert, for example, more than 385,000 hectares burned (Brooks and Matchett 2006). This burned area is approximately 3% of the entire Mojave Desert. Fueled in large part by exotic annual grasses, these fires burned desert ecosystems thought to have only burned infrequently historically. Burns now occupy significant portions of desert landscapes, posing prominent management challenges. Improving our understanding of plant recovery on desert burns is important for evaluating future fire hazard, whether natural revegetation will meet management objectives, and for planning active revegetation …

Post-Fire Plant Recovery In The Mojave And Sonoran Deserts Of Western North America, Scott R. Abella, Public Lands Institute, Department Of Environmental Studies, University Of Nevada, Las Vegas

Fire Science Presentations

Fire is thought to have been generally rare historically in the Mojave and Sonoran Deserts. However, invasion by exotic grasses (e.g., Schismus spp.) has increased fuel continuity, promoting fire in these deserts. Succession and recovery are not well understood processes in deserts, nonetheless for a novel disturbance like fire. In addition to helping build theories of desert succession and recovery, information on post-fire recovery has numerous practical implications (e.g., determining whether active revegetation is needed). Systematic reviews provide a means for obtaining literature using reproducible search criteria. This approach facilitates a balanced appraisal of available information, synthesizes scattered literature, and …

Using A Diverse Seed Mix To Establish Native Plants On A Sonoran Desert Burn, Scott R. Abella, John L. Gunn, Mark L. Daniels, Judith D. Springer, Susan E. Nyoka

Fire Science Presentations

• Revegetating burned areas is a formidable challenge facing resource managers in southwestern United States arid lands.
• Natural revegetation of desert burns by native species may be slow, or dominated by exotic annual grasses that perpetuate a frequent-fire regime.
• Resource managers may have several reasons for actively revegetating burns with native species, such as for providing competition with exotic species, minimizing soil erosion and dust pollution, and improving aesthetics.
• The use of native species in revegetation has been limited by a lack of available seed and by findings that native desert species are difficult to establish (e.g., Bainbridge and Virginia 1990, …

Lattice Super-Yang-Mills Using Domain Wall Fermions In The Chiral Limit, Simon Catterall, Joel Giedt, Richard Brower, George T. Fleming, Pavlos Vranas

Physics - All Scholarship

Lattice N=1 super-Yang-Mills theory formulated using Ginsparg-Wilson fermions provides a rigorous non-perturbative definition of the continuum theory that requires no fine-tuning as the lattice spacing is reduced to zero. Domain wall fermions are one explicit scheme for achieving this and using them we have performed large-scale Monte Carlo simulations of the theory for gauge group SU(2). We have measured the gaugino condensate, static potential, Creutz ratios and residual mass for several values of the domain wall separation L_s, four-dimensional lattice volume, and two values of the gauge coupling. With this data we are able to extrapolate the gaugino condensate to …

The Alestle - Vol. 67 No. 30 - 12/09/2008, Southern Illinois University Edwardsville

The Alestle

Vol. 67 No. 30

A Qualitative Examination Of Youth Voice In The Decision-Making Process Within The 4-H Youth Development Program: Promoting Promising Practices In Overcoming Barriers, Janet Fox, Todd Tarifa, Krisanna Machtmes

Journal of Youth Development

This paper discusses a national study designed to identify and describe obstacles to youth voice in the decision-making process in the 4-H youth development program from the perception of three distinct populations - State 4-H Program Leaders, 4-H State Youth Development Specialists, and 4-H Youth Agents/Educators. When examining these professionals’ views on the barriers affecting youth voice in the decision-making process, time and scheduling seem to consistently present the largest barrier to youth voice. Involvement in the decision-making process provides a wide range of hurdles including the opportunity structures, involvement procedures, representation and dynamics within the process. Adult power and …

A Modified Surface Energy Balance For Modeling Evapotranspiration And Canopy Resistance, Luis O. Lagos

Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research

A modified surface energy balance (SEB) model based on the Shuttleworth-Wallace and Choudhury-Monteith methods was developed to estimate evaporation from soil covered by crop residue, and transpiration from crop canopies. The model describes the energy balance and flux resistances for partially-vegetated and residue-covered surfaces. Physical and biochemical energy storage terms and lateral fluxes are neglected in the model. Net radiation is one of the inputs in the SEB model and provides the energy needed for soil evaporation, crop transpiration and heat transfer through the canopy, soil/residue surfaces and the atmosphere.

A sensitivity analysis of the SEB model parameters showed that …

Arizona V. Johnson: Determining When A Terry Stop Becomes Consensual, Ryan Thompson

Duke Journal of Constitutional Law & Public Policy Sidebar

No abstract provided.

Epigenomic Consequences Of Immortalized Plant Cell Suspension Culture., Milos Tanurdzic, Matthew W. Vaughn, Hongmei Jiang, Tae-Jin Lee, R Keith Slotkin, Bryon Sosinski, William F. Thompson, Rebecca W. Doerge, Robert A. Martienssen

Department of Statistics Faculty Publications

Plant cells grown in culture exhibit genetic and epigenetic instability. Using a combination of chromatin immunoprecipitation and DNA methylation profiling on tiling microarrays, we have mapped the location and abundance of histone and DNA modifications in a continuously proliferating, dedifferentiated cell suspension culture of Arabidopsis. We have found that euchromatin becomes hypermethylated in culture and that a small percentage of the hypermethylated genes become associated with heterochromatic marks. In contrast, the heterochromatin undergoes dramatic and very precise DNA hypomethylation with transcriptional activation of specific transposable elements (TEs) in culture. High throughput sequencing of small interfering RNA (siRNA) revealed that …

The Current Volume 19 : Issue 14, Nova Southeastern University

Student Newspapers

No abstract provided.

Worm-Web Search: A Content-Based Image Retrieval (Cbir) System For The Parasite Image Collection In The Harold W. Manter Laboratory Of Parasitology, University Of Nebraska State Mueum, Ramalingamurthy Meduri, Ashok Samal, Scott Lyell Gardner

Harold W. Manter Laboratory of Parasitology: Faculty Publications

We have developed a prototype web-accessible content-based image retrieval (CBIR) system that allows internet/web-based sharing of biological collections that contain large numbers of images of archived specimens. This system will enable both researchers and educators to access verified, high quality data on biological collections that are available in any museum with digitized holdings. The CBIR system that we are testing can play an important role in understanding global biodiversity because no knowledge of the specific names of specimens need be known before useful information can be extracted from such databases. Our CBIR framework allows users to search image collections using …

Nowhere To Hide: Finding Plagiarized Documents Based On Sentence Similarity, Nathaniel Gustafson, Yiu-Kai D. Ng, Maria Soledad Pera

Faculty Publications

Plagiarism is a serious problem that infringes copyrighted documents/materials, which is an unethical practice and decreases the economic incentive received by authors (owners) of the original copies. Unfortunately, plagiarism is getting worse due to the increasing number of online publications on the Web, which facilitates locating and paraphrasing information. In solving this problem, we propose a novel plagiarism-detection method, called SimPaD, which (i) establishes the degree of resemblance between any two documents D1 and D2 based on their sentence-to-sentence similarity computed by using pre-defined word-correlation factors, and (ii) generates a graphical view of sentences that are similar (or the same) …

The Gendered Meanings Of Assets For Divorce, Jeffrey P. Dew

Faculty Publications

Scholars identified a negative relationship between assets and divorce decades ago, but the mechanisms behind this relationship remain unknown. Using data from the National Survey of Families and Households (N = 4,721 couples), this study compared three mechanisms that might link assets and divorce. Non-proportional Cox hazard models indicated that two of the three mechanisms explained the relationship between assets and divorce. Wives’ marital satisfaction and their perceptions of their hypothetical post-divorce standard of living completely mediated the relationship between assets and divorce. The relationship between assets and divorce was not related to husbands’ characteristics.

Conditions For Tracking In Networked Control Systems, Chaouki T. Abdallah, I Lopez, S.K. Jayaweera, H. Tanner

Electrical & Computer Engineering Faculty Publications

In this paper we obtain information theoretical conditions for tracking in linear time-invariant control systems. We consider the particular case where the closed loop contains a channel in the feedback loop. The mutual information rate between the feedback signal and the reference input signal is used to quantify information about the reference signal that is available for feedback. This mutual information rate must be maximized in order to improve the tracking performance. The mutual information is shown to be upper bounded by a quantity that depends on the unstable eigenvalues of the plant and on the channel capacity. If the …