Digital Commons Network^™

Impact Of Topographic And Data Resolution On Hydrologic And Nonpoint-Source Pollution Modeling In A Karst Terrane, Alex W. Fogle

Report of Investigations--KGS

To prevent or reduce the contamination of ground water from agricultural sources, Best Management Practices (BMP’s) such as land-use changes, modifications to control surface runoff, various tillage methods, variations in rates and kinds of chemical applications, and handling procedures for chemicals are being employed and analyzed for effectiveness. The effectiveness of a BMP is often estimated before implementation by evaluating the BMP through the use of computer simulation models. The interactions between surface water and ground water that are unique to karst terranes are not incorporated into the frequently used predictive models. The purpose of this study was to document …

Sigma Coordinate Pressure Gradient Errors And The Seamount Problem, George L. Mellor, Lie-Yauw Oey, Tal Ezer

CCPO Publications

In a recent paper by Mellor et al., it was found that, in two-dimensional (x, z) applications with finite horizontal viscosity and zero diffusivity, the velocity error, associated with the evaluation of horizontal density or pressure gradients on a sigma coordinate grid, prognostically disappeared, leaving behind a small and physically insignificant distortion in the density field. The initial error is numerically consistent in that it decreases as the square of the grid increment size. In this paper, we label this error as a sigma error of the first kind. In three-dimensional applications, the authors have encountered an error that did …

Integrable Unsteady Motion With An Application To Ocean Eddies, A. D. Kirwan Jr., Bruce L. Lipphardt

CCPO Publications

Application of the Brown-Samelson theorem, which shows that particle motion is integrable in a class of vorticity-conserving, two-dimensional incompressible hows, is extended here to a class of explicit time dependent dynamically balanced flows in multilayered systems. Particle motion for nonsteady two-dimensional flows with discontinuities in the vorticity or potential vorticity fields (modon solutions) is shown to be integrable. An example of a two-layer modon solution constrained by observations of a Gulf Stream ring system is discussed.

Faculty Senate Monthly Packet January 1998, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The January 1998 Monthly packet includes the January agenda and appendices and the Faculty Senate minutes and attachments from the meeting held December 1997.

Relationship Of Act/Sat Scores To The Superintendency, Merle J. Farrier

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Towards A Java Environment For Spmd Programming, Bryan Carpenter, Guansong Zhang, Geoffrey C. Fox, Xiaoming Li

Northeast Parallel Architecture Center

As a relatively straightforward object-oriented language, Java is a plausible basis for a scientific parallel programming language. We outline a conservative set of language extensions to support this kind of programming. The programming style advocated is Single Program Multiple Data (SPMD), with parallel arrays added as language primitives. Communications involving distributed arrays are handled through a standard library of collective operations. Because the underlying programming model is SPMD programming, direct calls to other communication packages are also possible from this language.

Considerations In Hpjava Language Design And Implementation, Guansong Zhang, Bryan Carpenter, Geoffrey C. Fox, Xinying Li, Yuhong Wen

Northeast Parallel Architecture Center

This paper discusses some design and implementation issues in the HPJava language. The language is briefly reviewed, then the class library that forms the foundation of the translation scheme is described. Through example codes, we illustrate how HPJava source codes can be translated straightforwardly to ordinary SPMD Java programs calling this library. This is followed by a discussion of the rationale for introducing the language in the first place, and of how various language features have been designed to facilitate efficient implementation.

1998 Program, State University Of New York At Buffalo

Upstate New York Science Librarians Conference

No abstract provided.

University Place

Syracuse University Magazine

No abstract provided.

A Global Communication Optimization Technique Based On Data-Flow Analysis And Linear Algebra, Mahmut Kandemir, P. Banerjee, Alok Choudhary, J. Ramanujam

Electrical Engineering and Computer Science - All Scholarship

Reducing communication overhead is extremely important in distributed-memory message-passing architectures. In this paper, we present a technique to improve communication that considers data access patterns of the entire program. Our approach is based on a combination of traditional data-flow analysis and a linear algebra framework, and works on structured programs with conditional statements and nested loops but without arbitrary goto statements. The distinctive features of the solution are the accuracy in keeping communication set information, support for general alignments and distributions including block-cyclic distributions and the ability to simulate some of the previous approaches with suitable modifications. We also show …

Clouds: A Decision Tree Classifier For Large Datasets, Khaled Alsabti, Sanjay Ranka, Vineet Singh

Electrical Engineering and Computer Science - All Scholarship

Classification for very large datasets has many practical applications in data mining. Techniques such as discretization and dataset sampling can be used to scale up decision tree classifiers to large datasets. Unfortunately, both of these techniques can cause a significant loss in accuracy. We present a novel decision tree classifier called CLOUDS, which samples the splitting points for numeric attributes followed by an estimation step to narrow the search space of the best split. CLOUDS reduces computation and I/O complexity substantially compared to state of the art classifiers, while maintaining the quality of the generated trees in terms of accuracy …

Steady State Memetic Algorithm For Partial Shape Matching, Ender Ozcan, Chilukuri K. Mohan

Electrical Engineering and Computer Science - All Scholarship

Shape matching techniques are important in machine intelligence, especially in applications such as robotics. Currently, there are three major approaches to shape recognition: statistical, syntactic and neural approaches. This paper presents a fourth approach: evolutionary algorithms. A steady state memetic algorithm is shown to be successful in matching shapes even when they are partially obscured, and even in the presence of noise in the input image.

Integrating Security Into The Curriculum, Cynthia E. Irvine, Shiu-Kai Chin, Deborah Frincke

Electrical Engineering and Computer Science - All Scholarship

The number of skilled practitioners of computer security who are able to address the complexities of modern technology and are familiar with successful approaches to system security is very small. People want security but are faced with two difficulties. First, they do not know how to achieve it in the context of their enterprises. They may not even know of a way to translate organizational procedures into policies, much less implement a set of mechanisms to enforce those policies. Second, they have no way of knowing whether their chosen mechanisms are effective. The recent US Presidential Commission on Critical Infrastructure …

Secure Delegation For Distributed Object Environments, Nataraj Nagaratnam, Doug Lea

Electrical Engineering and Computer Science - All Scholarship

SDM is a Secure Delegation Model for Java-based distributed object environments. SDM extends current Java security features to support secure remote method invocations that may involve chains of delegated calls across distributed objects. The framework supports a control API for application developers to specify mechanisms and security policies surrounding simple or cascaded delegation. Delegation may also be disabled and optionally revoked. These policies may be controlled explicitly in application code, or implicitly via administrative tools.

Robustness Analysis Of Hopfield And Modified Hopfield Neural Networks In Time Domain, Jie Shen, S. N. Balakrishnan

Mechanical and Aerospace Engineering Faculty Research & Creative Works

A variant of the Hopfield network, called the modified Hopfield network is formulated. This network which consists of two mutually recurrent networks has more free parameters than the well-known Hopfield network. Stability analysis of this network is presented. The analysis is carried out in the time domain with an application of the Lyapunov method and robust control Lyapunov function. The current flow in the network is treated as a "control". This "controller" is shown to guarantee "a practically stabilizing control". Analysis of the Hopfield network is also included for completion.

Isozyme Diversity In Vigna Vexillata (L.) A. Rich (Fabaceae) Complex, M. Garba, R. S. Pasquet

All Peer-Reviewed Publications

An electrophoretic comparison of variation at 32 isozyme loci was performed for 122 Vigna vexillata and 3 V. lobatifolia accessions. The results do not fit the present delimitation of taxa. According to the results obtained during this study, Vigna lobatifolia could be included within V. vexillata, and both Asian and West African taxa could deserve a subspecific rank within V. vexillata. Considering only Africa, some similarities between the organization of the gene pools of V. vexillata and V. unguiculata have been found.

What Should Lawyers Know About Economics, Robert Whaples, Andrew P. Morriss, John C. Moorhouse

Faculty Scholarship

To find out what law-and-economics scholars and economists think lawyers should know about economics, we conducted surveys of random samples of members of the American Law and Economics Association and the American Economic Association. We posed two questions to both groups: What do you think are the five most important economic concepts law students ought to learn in a law-and-economics course?

Law-and-economics courses sometimes include economics articles in their reading lists. If you could choose up to five articles for such a course, what would they be?

Pseudocontinuations And The Backward Shift, William T. Ross, Alexandru Aleman, Stefan Richter

Department of Math & Statistics Faculty Publications

In this paper, we will examine the backward shift operator Lf = (f −f(0))/z on certain Banach spaces of analytic functions on the open unit disk D. In particular, for a (closed) subspace M for which LM Ϲ M, we wish to determine the spectrum, the point spectrum, and the approximate point spectrum of L│M. In order to do this, we will use the concept of “pseudocontinuation" of functions across the unit circle T.

We will first discuss the backward shift on a general Banach space of analytic functions and then for the weighted …

Implications Of Second-Best Theory For Administrative And Regulatory Law: A Case Study Of Public Utility Regulation, Andrew P. Morriss

Faculty Scholarship

Compared to early twentieth century policy analysts, we have available today extensive tools of "comparative institutional analysis,'' increasingly sophisticated economic models,3 vastly increased and widely distributed computing power, and gigabytes of data. Despite all this, we simply have not come to grips with the implications of second-best theory for regulatory interventions. Moreover, policy must address not only the economic implications of second-best theory but the legal and political implications as well: policymakers must consider the interaction of potential shortcomings of the legal and political tools available when they design the solutions to be implemented with those tools.

The failure to …

Hadamard Difference Sets In Nonabelian 2-Groups With High Exponent, James A. Davis, Joel E. Iiams

Department of Math & Statistics Faculty Publications

Nontrivial difference sets in groups of order a power of 2 are part of the family of difference sets called Hadamard difference sets. In the abelian case, a group of order 2^{2t + 2} has a difference set if and only if the exponent of the group is less than or equal to 2^{t + 2}. In a previous work (R. A. Liebler and K. W. Smith, in “Coding Theory, Design Theory, Group Theory: Proc. of the Marshall Hall Conf.,” Wiley, New York, 1992), the authors constructed a difference set in a nonabelian group of order …

Indifférance, John F. Pohorylo

Theses

The main intention of this thesis is to wrestle Derrida's notion of différance from an endless free-play of signification into some sense of boundedness, and to release meaning, knowledge and understanding from its relentless grasp. In achieving this goal, an entirely new field of "value" and "Quality" based discourse would open up within applied schismatic architectural theory.

Robert Pirsig offers a strong alternative to différance with his discourse on the Metaphysics of Quality, wherein he defines "Quality" as a pre-intellectual reality. This pre-intellectual reality, which I call "indifférance", is made up of the lenses of inorganic, organic and social …

Search For Evidence Of Compositeness At Lep I, R. Barate, M. Thulasidas

Research Collection School Of Computing and Information Systems

Extensive searches for evidence of compositeness of quarks and leptons have been made in the complete set of ALEPH data from LEP running at the Z peak. These include searches for radiative and weak decays of excited fermions, produced either in pairs or singly, and a scalar partner of the Z. Coupling and branching ratio limits deduced from these searches are presented.

Disproportionation And Structural Changes Of Tetraarylethylene Donors Upon Successive Oxidation To Cation Radicals And To Dications, Rajendra Rathore, Sergey V. Lindeman, A. S. Kumar, Jay K. Kochi

Chemistry Faculty Research and Publications

The stepwise (one-electron) chemical oxidation of the tetraphenylethylene donor and its substituted analogues (D) can be carried out by electron exchange with aromatic cations or antimony(V) oxidants to selectively afford the cation radical (D^+•) initially and then the dication (D²⁺). The ready interchange of the latter establishes the facile disproportionation (i.e., 2D^+• ⇌ D²⁺ + D) that was originally examined by only transient electrochemical techniques. The successful isolations of the crystalline salts of the tetraanisylethylene cation radical (1^+•) as well as the …

University Of Central Florida Libraries, Annual Report 1997-1998, Ucf Libraries

Libraries' Documents

No abstract provided.

Introduction [To Comparative Romanticisms: Power, Gender, Subjectivity Larry H. Peer And Diane Hoeveler, Eds.], Diane Hoeveler

English Faculty Research and Publications

No abstract provided.

Protecting Property Rights With Strict Scrutiny: An Argument For The "Specifically And Uniquely Attributable" Standard , Daniel Williams Russo

Fordham Urban Law Journal

This article analyzes three levels of scrutiny states have applied to regulatory takings cases. These include 'judicial deterrence", "rational nexus", and "specifically and uniquely attributable". The author argues that the first two standards are inefficient and concludes in favor of the "specifically and uniquely attributable" standard.

Logic And Elements. (Premises And Conclusions: Symbolic Logic For Legal Analysis)." , Richard D. Friedman

Articles

We may happily agree with Holmes that logic is not the life of the law' and yet contend that logic should play a significant role in legal discourse. Logic cannot demonstrate the truth of premises, and so by itself it cannot demonstrate the merits of a legal argument. Moreover, even given the premises, it may be that a leap of faith, or intuition, has an irreducible role at least in some good legal arguments.2 But at least a sound legal argument will not be an illogical one. An argument will not be persuasive if it appears to violate basic principles …

Economic Analysis Of Evidentiary Law: An Underused Tool, An Underplowed Field (Symposium: The Economics Of Evidentiary Law), Richard D. Friedman

Articles

The law and economics movement has had a major impact on many areas of law, but rather little on the law of evidence. This is not to say that there have been no attempts to analyze evidentiary issues through an economic lens,' but such efforts are far more scattered in evidence than in other legal fields, including the closely related one of civil procedure.2 Believing that economics has value for evidentiary analysis, I suggested to the Executive Committee and Advisory Board of the Evidence Section of the Association of American Law Schools ("AALS"), when I was chairman of the section, …

A Populist Critique Of Direct Democracy, Sherman J. Clark

Articles

It is often assumed that direct democratic processes - referenda and initiatives - offer the people a chance to speak more clearly than is possible through representative processes. Courts, commentators, and political leaders have defended or described direct democratic outcomes as the voice of the "people themselves." Because plebiscites allow the people to speak directly, without the potential distortion inherent in representation, they seem ideally responsive to popular will. Indeed, even critics of direct democracy appear to grant as much. Critics are quick to point out, of course, that actual plebiscites often fall far short of the ideal. Uneven voter …

The Bison: 1998, Howard University

Howard University Yearbooks

This digital object was funded in part through a grant from the Andrew W. Mellon Foundation. The digitalization of this object was part of a collaborative effort with the Washington Research Library Consortium and George Washington University.