Digital Commons Network^™

Organizational Change, Ann K. Miller

Electrical and Computer Engineering Faculty Research & Creative Works

No abstract provided.

Experimental Characterization Of Metallic Dampers For Seismic Retrofit Of Highway Bridges, Genda Chen, Eric R. Bothe, Jeffrey Ger

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The seismic effectiveness of metallic dampers as vibration isolators and energy dissipation devices as well as the dynamic performance of high rocker bearings are investigated experimentally. The scope of the study includes optimizing the metallic dampers for maximum dissipation of energy, characterizing full-scale metallic dampers, and understanding the seismic behavior of a small-scale bridge with dampers. Three full-scale dampers, two of straight and one of linearly tapered rods, were fabricated and tested under a progressive cyclic load. Test results consistently show that the tangential stiffness of the metallic dampers does not degrade significantly as the number of loading cycles increases …

To Investigate The Reasons For Moisture Ingress In Ready To Drink Mixes, Rahul N. Eklahare

Theses

The objective of this study was to determine the reasons for moisture ingress in ready to drink mixes. The containers for this product were supposed to be moisture resistant. However, after a certain period it was observed that the product inside was prone to caking and lump formation due to moisture ingress.

The dimensions of the containers were compared with the actual dimensions and the containers were exposed to accelerated aging to simulate a longer duration of shelf life. Several recommendations were made for new design of containers which were also tested for moisture ingress. Some observations were also made …

Cyberspace Invades The First Amendment: Where Do We Go From Here?, Dollie Deaton

University of Kentucky Master's Theses

Long before our nation was created, European Countries acknowledged the importance of freespeech. Despite this, Great Britain later denied this right to the New England Colonies. Over thelast two centuries many battles have been fought to make freedom of speech an inalienable right tobe shared by all. A good portion of these battles have been fought in courtrooms. Judge andSupreme Court justices have dealt with issues ranging from what is a public figure to what isindecent speech. Many of these issues are not found in the original text of the Constitution. This hasforced the judges to devise tests to determine …

A Fast Evanescent Wave Algorithm, W. C. Chew, L. (Lijun) J. Jiang, S. Velamparambil

Electrical and Computer Engineering Faculty Research & Creative Works

Description of a fast evanescent wave algorithm was presented that traded off the use of memory for increasing the speed. The use of the buffer boxes was avoided by the algorithm which increased its speed. An efficient method to derive or store the evanescent wave spectrum from the propagating wave spectrum was studied.

Investigating The Effect Of The International Stock Indexes On The United States Stock Index Futures, Zehlha Illhan Ertuna

Theses and Dissertations in Business Administration

The futures market is used extensively for price discovery, arbitrage, and hedging. Since their introduction in the 1980's, the stock index futures have also become an active market and a very important research area. Any additional knowledge to understand the underlying effects on the index will help both investors and researchers. In this study, I examine the role of informational flow from the world's major stock markets (British, French, German, Japanese) to the U.S. futures market in terms of forming expectations, and offer new insights regarding the informational efficiency of the futures markets in an intenational perspective. State space modeling …

New Sequential And Scalable Parallel Algorithms For Incomplete Factor Preconditioning, David A. Hysom

Computer Science Theses & Dissertations

The solution of large, sparse, linear systems of equations Ax = b is an important kernel, and the dominant term with regard to execution time, in many applications in scientific computing. The large size of the systems of equations being solved currently (millions of unknowns and equations) requires iterative solvers on parallel computers. Preconditioning, which is the process of translating a linear system into a related system that is easier to solve, is widely used to reduce solution time and is sometimes required to ensure convergence. Level-based preconditioning (ILU(ℓ)) has long been used in serial contexts and is widely recognized …

Adaptive Critic Based Neuro-Observer, Xin Liu, S. N. Balakrishnan

Mechanical and Aerospace Engineering Faculty Research & Creative Works

A new Neural Network (NN) based observer design method for nonlinear systems represented by nonlinear dynamics and linear/nonlinear measurement is proposed in this paper. In this new approach, as the first step, the observer design problem is changed into a "controller" design problem by establishing the error dynamics, and then the Adaptive Critic (AC) based approach is applied on this error dynamics to design a 'controller', such that the errors are driven to zero. The resulting observer has inherent robustness from the AC based design approach. Some simulations are presented to illustrate the effectiveness of this approach.

Trachelomonas Spp. And Other Euglenophyceae Taxa In A Southeastern Virginia Lake, Harold G. Marshall

Biological Sciences Faculty Publications

Trachelomonas species from Lake Kilby, a reservoir lake in southeastern Virginia are described with supportive electron micrographs. The most abundant Trachelomonas species were T. hispida and T. volvocina. Other members of the Euglenophyceae occurring in this lake are identified.

Contrasts In Tick Innate Immune Responses To Borrelia Burgdorferi Challenge: Immuno-Tolerance In Ixodes Scapularis Versus Immunocompetence In Dermacentor Variabilis (Acari: Ixodidae)., Robert Johns, Jun Ohnishi, Anne Broadwater, Daniel E. Sonenshine, Aravinda M. Desilva, Wayne L. Hynes

Biological Sciences Faculty Publications

The blacklegged tick, Ixodes scapularis Say, transmits the Lyme disease spirochete (Borrelia burgdorferi), whereas the American dog tick, Dermacentor variabilis (Say), is unable to transmit the bacterium. We compared the innate immune response of these ticks against spirochetes directly inoculated into the hemocoel cavity of ticks. In I. scapularis, some Borrelia were found associated with hemocytes, while numerous other spiral-shaped, intact bacteria remained free in the hemolymph. In contrast, in D. variabilis only remnants of the bacteria were evident in the hemolymph, indicating lysis; intact spirochetes were rare. Spirochetes were observed bound to or within the organs …

Seasonal Climatology Of Hydrographic Conditions In The Upwelling Region Off Northern Chile, J. L. Blanco, A. C. Thomas, M.-E. Carr, P. T. Strub

OES Faculty Publications

Over 30 years of hydrographic data from the northern Chile (18°S-24°S) upwelling region are used to calculate the surface and subsurface seasonal climatology extending 400 km offshore. The data are interpolated to a grid with sufficient spatial resolution to preserve crossshelf gradients and then presented as means within four seasons: austral winter (JulySeptember), spring (October-December), summer (January-March), and fall (April-June). Climatological monthly wind forcing, surface temperature, and sea level from three coastal stations indicate equatorward (upwelling favorable) winds throughout the year, weakest in the north. Seasonal maximum alongshore wind stress is in late spring and summer (DecemberMarch). Major water masses …

Control Of Phytoplankton Growth By Iron Supply And Irradiance In The Subantarctic Southern Ocean: Experimental Results From The Saz Project, P. W. Boyd, A. C. Crossley, G. R. Ditullio, F. B. Griffiths, D. A. Hutchins, B. Queguiner, Peter N. Sedwick, T. W. Trull

OES Faculty Publications

The influence of irradiance and Fe supply on phytoplankton processes was studied, north (47°S, 142°E) and south (54°S, 142°E) of the Subantarctic Front in austral autumn (March 1998). At both sites, resident cells exhibited nutrient stress (F_v/F_m 0 at 47°S and 9% I₀ at 54°S because of MLDs of 40 (47°S) and 90 m (54°S), when these stations were occupied. The greater MLD at 54°S is reflected by tenfold higher cellular chlorophyll a levels in the resident phytoplankton. In the 47°S experiment, chlorophyll a levels increased to >1 μg/L^-1 only in the high-Fe treatments, regardless …

Control Of Phytoplankton Growth By Iron And Silicic Acid Availability In The Subantarctic Ocean: Experimental Results From The Saz Project, D. A. Hutchins, Peter N. Sedwick, G. R. Ditullio, P. W. Boyd, B. Queguiner, F. B. Griffiths, C. Crossley

OES Faculty Publications

Subantarctic Southern Ocean surface waters in the austral summer and autumn are characterized by high concentrations of nitrate and phosphate but low concentrations of dissolved iron (Fe, similar to0.05 nM) and silicic acid (Si, <1 muM). During the Subantarctic Zone AU9706 cruise in March 1998 we investigated the relative importance of Fe and Si in controlling phytoplankton growth and species composition at a station within the subantarctic water mass (46.8degreesS, 142degreesE) using shipboard bottle incubation experiments. Treatments included unamended controls; 1.9 nM added iron (+Fe); 9 muM added silicic acid (+Si); and 1.9 nM addediron plus 9 muM added silicic acid (+Fe+Si). We followed a detailed set of biological and biogeochemical parameters over 8 days. Fe added alone clearly increased community growth rates and nitrate drawdown and altered algal community composition relative to control treatments. Surprisingly, small, lightly silicified pennate diatoms grew when Fe was added either with or without Si, despite the extremely low ambient silicic acid concentrations. Pigment analyses suggest that lightly silicified chrysophytes (type 4 haptophytes) may have preferentially responded to Si added either with or without Fe. However, for many of the parameters measured the +Fe+Si treatments showed large increases relative to both the +Fe and +Si treatments. Our results suggest that iron is the proximate limiting nutrient for chlorophyll production, photosynthetic efficiency, nitrate drawdown, and diatom growth, but that Si also exerts considerable control over algal growth and species composition. Both nutrients together are needed to elicit a maximum growth response, suggesting that both Fe and Si play important roles in structuring the subantarctic phytoplankton community.

Effects Of Iron, Silicate, And Light On Dimethylsulfoniopropionate Production In The Australian Subantarctic Zone, G. R. Ditullio, P. N. Sedwick, D. R. Jones, P. W. Boyd, A. C. Crossley, D. A. Hutchins

OES Faculty Publications

Shipboard bottle incubation experiments were performed to investigate the effects of iron, light, and silicate on algal production of particulate dimethylsulfoniopropionate (DMSP_p) in the Subantarctic Zone (SAZ) south of Tasmania during March 1998. Iron enrichment resulted in threefold to ninefold increases in DMSP_p concentrations relative to control treatments, following 7 and 8-day incubation experiments. Additions of Fe and Si preferentially stimulated the growth of lightly-silicified pennate diatoms and siliceous haptophytes, respectively, to which we attribute the increased DMSP_p production in the incubation bottles. Both of these algal groups were previously believed to be low DMSP_{p …}

Introduction To Special Section: Saz Project, T. W. Trull, Peter N. Sedwick, F. B. Griffiths, S. R. Rintoul

OES Faculty Publications

Oceanographic processes in the subantarctic region contribute crucially to the phys. and biogeochemical aspects of the global climate system. To explore and quantify these contributions, the Antarctic Cooperative Research Center organized the SAZ Project, a multidisciplinary, multiship study carried out south of Australia in the austral summer of 1997-1998. We present an overview of the SAZ Project and some of its major results.

E Wars - Episode One: The Patent Menace, Raymond Van Dyke

Computer Law Review and Technology Journal

With the advent of the Information Age and the resulting transformation of our society, information companies are beginning to protect their business methodologies. As with any technological revolution, competition between the players is intense. In this new arena of business, competitors have turned patents into a weapon of choice. Businesses need new strategies to avoid becoming unnecessary casualties of war.

Table Of Contents

Computer Law Review and Technology Journal

No abstract provided.

European Union Legal Research: A Guide To Print And Electronic Sources, L. Kurt Adamson

Computer Law Review and Technology Journal

Legal practice today is a global activity. American lawyers need to find legal information efficiently, even when the information from jurisdictions far beyond the boundaries of their state or of the United States. Legal practice routinely involves international fields such as trade, business transactions, and taxation. The nations of Europe, especially those of the European Union ("EU"), are major trading partners of the United States and are the source of many legal transactions. This guide identifies the print and electronic sources that are most useful for finding relevant legal information from the EU.

Backdoor Liability From Internet Telecommuters, Mark J. Maier

Computer Law Review and Technology Journal

Internet telecommuters work from home and access their employer's internal network over the Internet. This relatively new style of work has increased in popularity through the years, with an estimated 4.5 million workers Internet telecommuting in 1999. While employers enjoy compelling benefits such as reducing overhead costs, Internet telecommuting raises new security concerns for employers by exposing their internal networks to "backdoor attacks" that exploit the telecommuter's connection. The recent backdoor attack on Microsoft's source code illustrates the extent to which such attacks threaten confidential information. If such confidential information belongs to a client or third party, then the telecommuter's …

Identification Of The Domains Of Urer, An Arac-Like Transcriptional Regulator Of The Urease Gene Cluster In Proteus Mirabilis, Carrie A. Poore, Christopher Coker, Jonathan D. Dattelbaum, Harry L.T. Mobley

Chemistry Faculty Publications

Proteus mirabilis urease catalyzes the hydrolysis of urea to CO₂ and NH₃, resulting in urinary stone formation in individuals with complicated urinary tract infections. UreR, a member of the AraC family, activates transcription of the genes encoding urease enzyme subunits and accessory proteins, ureDABCEFG, as well as its own transcription in the presence of urea. Based on sequence homology with AraC, we hypothesized that UreR contains both a dimerization domain and a DNA-binding domain. A translational fusion of the leucine zipper dimerization domain (amino acids 302 to 350) of C/EBP and the C-terminal half of UreR …

Insiders And Outsiders: What The American Law Institute Has Done For Gay And Lesbian Families, Mary I. Coombs

Articles

No abstract provided.

Demutualization Of Financial Exchanges: Business As Usual?, Caroline Bradley

Articles

No abstract provided.

Latcrit At Five: Institutionalizing A Postsubordination Future, Elizabeth M. Iglesias, Francisco Valdes

Articles

No abstract provided.

Faith In Justice: Fiduciaries, Malpractice & Sexual Abuse By Clergy, Zanita E. Fenton

Articles

No abstract provided.

Campaign Of Sabotage: Big Government's War Against Public Transportation, Michael Lewyn

Scholarly Works

Historically, American politicians have been far more generous to highways than to public transit. The political elite's failure to support public transit is based on the view that despite decades of state and federal support, transit ridership has dwindled. This article criticizes that theory, by explaining that far from promoting public transit, government at all levels has sabotaged transit in a variety of ways: by building highways to suburbs unserved by public transit, by loading down transit systems with unfunded mandates, by using housing, education and tax policy to encourage migration to those suburbs, and by using zoning policy to …

Introduction To Economics Broadly Considered, Jeff E. Biddle, John B. Davis, Steven G. Medema

Economics Faculty Research and Publications

No abstract provided.

Donald E. Moggridge As An Historian Of Economic Thought, John B. Davis

Economics Faculty Research and Publications

No abstract provided.

E-Commerce And Trans-Atlantic Privacy, Joel R. Reidenberg

Faculty Scholarship

For almost a decade, the United States and Europe have anticipated a clash over the protection of personal information. Between the implementation in Europe of comprehensive legal protections pursuant to the directive on data protection and the continued reliance on industry self-regulation in the United States, trans-Atlantic privacy policies have been at odds with each other. The rapid growth in e-commerce is now sparking the long-anticipated trans-Atlantic privacy clash. This Article will first look at the context of American e-commerce and the disjuncture between citizens' privacy and business practices. The Article will then turn to the international context and explore …

Criminal Law In Cyberspace, Neal K. Katyal

Georgetown Law Faculty Publications and Other Works

Two of the most talked-about crimes of the year, the ILoveYou computer worm and the denial of service attacks on Yahoo, eBay, and ETrade, suggest that a new form of crime is emerging: cybercrime. Thousands of these crimes occur each year, and the results are often catastrophic; in terms of economic damage, the ILoveYou worm may have been the most devastating crime in history, causing more than $11 billion in losses.

This paper asks how cybercrime is best deterred. It identifies five constraints on crime - legal sanctions, monetary perpetration cost, social norms, architecture, and physical risks - and explains …

The Sex Discrimination Argument In Gay Rights Cases, Nan D. Hunter

Georgetown Law Faculty Publications and Other Works

The argument that laws that discriminate on the basis of sexual orientation in fact discriminate on the basis of sex is not new. Advocates have been pressing this claim for almost thirty years. Simply put, the argument is that a statute that bars a sexual relationship between two women or two men discriminates on the basis of sex because either partner could have had the same relationship with a person of the opposite sex.