Digital Commons Network^™

Concurrent Simulation Of Plasma Reactors, Marc Rieffel, Stephen Taylor, Jerrell Watts, Sadasivan Shankar

College of Engineering and Computer Science - Former Departments, Centers, Institutes and Projects

This paper summarizes the computational techniques behind a novel concurrent simulation method used for studying the neutral flow inside plasma reactors. The technique is intended to cope with low pressure flow (less than 1.5 Torr) in realistic three-dimensional geometries. It is based on the Direct Simulation Monte Carlo method to accurately model rarefied gas flow. The concurrent formulation operates on a broad variety of shared-memory multiprocessors, multicomputers, and networked workstations.

Practical Algorithms For Selection On Coarse-Grained Parallel Computers, Ibraheem Al-Furaih, Srinivas Aluru, Sanjay Goil, Sanjay Ranka

College of Engineering and Computer Science - Former Departments, Centers, Institutes and Projects

In this paper, we consider the problem of selection on coarse-grained distributed memory parallel computers. We discuss several deterministic and randomized algorithms for parallel selection. We also consider several algorithms for load balancing needed to keep a balanced distribution of data across processors during the execution of the selection algorithms. We have carried out detailed implementations of all the algorithms discussed on the CM-5 and report on the experimental results. We demonstrate that the randomized algorithms are superior to their deterministic counterparts.

Integer Sorting Algorithms For Coarse-Grained Parallel Machines, Khaled Alsabti, Sanjay Ranka

College of Engineering and Computer Science - Former Departments, Centers, Institutes and Projects

Integer sorting is a subclass of the sorting problem where the elements have integer values and the largest element is polynomially bounded in the number of elements to be sorted. It is useful for applications in which the size of the maximum value of element to be sorted is bounded. In this paper, we present a new distributed radix-sort algorithm for integer sorting. The structure of our algorithm is similar to radix sort except that it typically requires less number of communication phases. We present experimental results for our algorithm on two distributed memory multiprocessors, the Intel Paragon and the …

Jamaican Cave Vertebrates, Donald A. Mcfarlane

WM Keck Science Faculty Papers

Limestone caves in the tropics are typically associated with a more diverse assemblage of vertebrates than are caves in temperate regions. Chapman [87] for example, has reported 37 species from the caves of Gunung Mulu National Park, Sarawak, whereas Bailey [43] lists only 13 for the equally cavernicolous Guadeloupe Mountains National Park, New Mexico, USA. Twenty-eight vertebrate species have been recorded from Jamaican caves. The relative importance of the five Classes differ in these three areas as shown in Table 1 (overleaf).

The Software Architecture Of A Virtual Distributed Computing Environment, Haluk Topcuoglu, Salim Hariri, Wojtek Furmanski, Jon Valente

Electrical Engineering and Computer Science - All Scholarship

The requirements of grand challenge problems and the deployment of gigabit networks makes the network computing framework an attractive and cost effective computing environment with which to interconnect geographically distributed processing and storage resources. Our project, Virtual Distributed Computing Environment (VDCE), provides a problem-solving environment for high-performance distributed computing over wide area networks. VDCE delivers well-defined library functions that relieve end-users of tedious task implementations and also support reusability. In this paper we present the conceptual design of VDCE software architecture, which is defined in three modules: a) the Application Editor, a user-friendly application development environment that generates the Application …

Parallel Domain Decomposition And Load Balancing Using Space-Filling Curves, Srinivas Aluru, Faith E. Sevilgen

Electrical Engineering and Computer Science - All Scholarship

Partitioning techniques based on space-filling curves have received much recent attention due to their low running time and good load balance characteristics. The basic idea underlying these methods is to order the multidimensional data according to a space-filling curve and partition the resulting one-dimensional order. However, space-filling curves are defined for points that lie on a uniform grid of a particular resolution. It is typically assumed that the coordinates of the points are representable using a fixed number of bits, and the run-times of the algorithms depend upon the number of bits used. In this paper, we present a simple …

Selective Crossover: Towards Fitter Offspring, Chilukuri K. Mohan

Electrical Engineering and Computer Science - All Scholarship

A new general-purpose crossover operator is proposed. The representation of a candidate solution is slightly perturbed, and the ensuing changes in fitness are calculated. Such fitness changes (for parents) are used in constructing the offspring resulting from crossover. Experiments with several sets of problems demonstrate that this approach leads to rapid increases in average and best fitness, and performs much better than traditional general-purpose crossover operators.

A Global Computing Environment For Networked Resources, Haluk Topcuoglu, Salim Hariri

Electrical Engineering and Computer Science - All Scholarship

Current advances in high-speed networks and WWW technologies have made network computing a cost-effective, high-performance computing alternative. New software tools are being developed to utilize efficiently the network computing environment. Our project, called Virtual Distributed Computing Environment (VDCE), is a high-performance computing environment that allows users to write and evaluate networked applications for different hardware and software configurations using a web interface. In this paper we present the software architecture of VDCE by emphasizing application development and specification, scheduling, and execution/runtime aspects.

Simulated Annealing And Genetic Algorithms For Partial Shape Matching, Ender Ozcan, Chilukuri K. Mohan

Electrical Engineering and Computer Science - All Scholarship

Partial shape matching may be viewed as an optimization problem, to be solved using methods such as simulated annealing (SA) and genetic algorithms (GAs). We apply and compare both these methods for matching input shapes with model shapes described in terms of features such as line segments and angles. The quality of matching is gauged using a measure derived from attributed shape grammars [10, 11]. Current results show that both SA and GA succeed in the shape matching task; the GA is faster and yields the global optimum more often than the versions of SA implemented.

An Information Security Education Initiative For Engineering And Computer Science, Shiu-Kai Chin, Cynthia E. Irvine, Deborah Frincke

Electrical Engineering and Computer Science - All Scholarship

This paper puts forward a case for an educational initiative in information security at both the undergraduate and graduate levels. Its focus is on the need for such education, the desired educational outcomes, and how the outcomes may be assessed. A basic thesis of this paper is that the goals, methods, and evaluation techniques of information and computer security are consistent with and supportive of the stated goals of engineering education and the growing movement for outcomes-based assessment in higher education.

Whitworth College Catalog 1997-1999, Whitworth University

Whitworth Catalog

No abstract provided.

Topology And Logic Programming Semantics, Pascal Hitzler

Computer Science and Engineering Faculty Publications

Logic programming employs logic as a programming language. Thus a logic program consists of a set of clauses of a certain form most often a subset of the clauses of first order logic viewed as axioms. Computation in this paradigm is deduction from these axioms via some interpreter.

Logic programming semantics is concerned with background theory for logic programming. It tries to provide models for logic programs to give them their intended meaning and to connect them with practically implementable interpreters.

Book Review: Curriculum And Aims, James Magrini

Philosophy Scholarship

No abstract provided.

A Noble Legacy: Physical Education Major 1937-1987, Bridgewater State College, Catherine E. Comeau

Histories of Bridgewater State University

No abstract provided.

More Triangular Number Results, Bruce Brandt

Journal of the Minnesota Academy of Science

I define an increasing function from triangular numbers to triangular numbers and prove it preserves [mathematical symbol]. I conjecture that whether a triangular number is in the image of this function is related to the magnitude of [mathematical symbol] on the triangular number. Parallel theorems and conjectures exist for pentagonal numbers. I also make conjectures about the partial sums of [mathematical symbol] on the triangular numbers along with a conjecture about the sums of absolute values of [mathematical symbol] on the squares.

On Translations Of Quadratic Residues, Bruce Brandt

Journal of the Minnesota Academy of Science

The question is posed: Given a set, S, and a positive integer, k, does a function from k to S exist such that, letting x - y if x is a member of a k-tuple going toy, we never have x - y and y - x? The question is linked to whether circular translations of quadratic residues intersect. Several conjectures are made related to the heuristic that quadratic residues are more inclined to intersect their circular translation than other subsets of Z/nZ with the same number of elements.

Back Matter

Journal of the Minnesota Academy of Science

No abstract provided.

Contributed Papers

Journal of the Minnesota Academy of Science

No abstract provided.

Index

Journal of the Minnesota Academy of Science

No abstract provided.

Winchell Papers

Journal of the Minnesota Academy of Science

Abstracts from the Winchell Papers given at the Annual Meeting for the Journal of the Minnesota Academy of Science.

Colorimetric Characterization Of Flexographic Process Utilizing Analytical Models, Arturo Aguirre

Theses

Not provided.

Properties Of Sun-Like Stars With Planets: 51 Pegasi, 47 Ursae Majoris, 70 Virginis, And Hd 114762, Gregory W. Henry, Sallie L. Baliunas, Robert A. Donahue, Willie H. Soon, Steven H. Saar

Information Systems and Engineering Management Research Publications

Radial velocity variations have revealed planets orbiting 51 Peg, 47 UMa, and 70 Vir, and a low-mass companion orbiting HD 114762. We analyze parallel records of photometric measurements in Strömgren b and y and Johnson V, R, and I passbands and Ca II H and K fluxes in those stars. In the case of 51 Peg, the high precision of the differential photometric measurements made by the 0.75 m Automatic Photoelectric Telescope and the nonvariability of the star would allow the detection of a transit of a planet as small as Earth (corresponding to an amplitude of 0.0001 mag) if …

Properties Of Sun-Like Stars With Planets: Ρ1 Cancri, Τ Bootis, And Υ Andromedae, Sallie L. Baliunas, Gregory W. Henry, Robert A. Donahue, Francis C. Fekel, Willie Soon

Information Systems and Engineering Management Research Publications

Planets have been reported orbiting the Sun-like stars ρ¹ Cnc, τ Boo, and υ And based on low-amplitude radial velocity variations. We have derived information on the first two stars from analysis of spectra, as well as parallel records of high-precision Strömgren b and y photometry and Ca II H + K fluxes. In the case of ρ¹ Cnc, the upper limit (peak to peak) of nondetection of photometric variability at the orbital period is Δy ~ 0.0004 mag. The possibility of a planetary transit cannot be ruled out completely from the photometric data. Variations of the …

1997 Didascaleion, State University Of New York College At Cortland

Didascaleion (1926-2003)

College yearbook.

Swenson Center News, 1997, Swenson Swedish Immigration Research Center, Augustana College

Newsletter: Swenson Center News

No abstract provided.

1997 Scholar's Day Schedule, State University Of New York At Cortland

Transformations

Scholars' Day was established in 1997 and is a day-long conference devoted to showcasing the wide array of scholarship, research and creative activities occurring on campus. In 2012, a new emphasis on student research lead to a name change to Transformations: A Student Research and Creativity Conference. This event focuses on student research, which is defined as an original investigation or creative activity through the primary efforts of a student or group of students. The work should show problem-solving skills and demonstrate new conceptual outcomes.

1997 Scholar's Day Abstracts, State University Of New York At Cortland

Transformations

Scholars' Day was established in 1997 and is a day-long conference devoted to showcasing the wide array of scholarship, research and creative activities occurring on campus. In 2012, a new emphasis on student research lead to a name change to Transformations: A Student Research and Creativity Conference. This event focuses on student research, which is defined as an original investigation or creative activity through the primary efforts of a student or group of students. The work should show problem-solving skills and demonstrate new conceptual outcomes.

Master's Degree Programs In: Marine Environmental Sciences, Marine Biology, Coastal Zone Management 1997, Nova Southeastern University

Halmos College of Natural Sciences and Oceanography Course Catalogs

No abstract provided.

Hillsborough County, New Hampshire 1997 Annual Report., Hillsborough County Representatives

Hillsborough County, NH Annual Reports

This is an annual report containing vital statistics for a county in the state of New Hampshire.

A Naturalistic Inquiry Into The Experience Of Job Loss, Kathryn Desai

Theses

This research paper is the result of a "naturalistic inquiry" to explore job loss, as experienced by displaced senior managers of the Long Term Care System in Ontario, in 1997. The purpose of the study is to describe the experiences of a group of downsized Home Care and Placement Coordination managers, who lost their jobs in the transition to Community Care Access Centres. The methodology included the use of focus groups and in-depth interviews (which were tape recorded), to collect the data from a sample of volunteers across the province. This qualitative study validated other research, which has demonstrated that …