Digital Commons Network^™

Fluctuation Properties Of Precipitation. Part I: On Deviations Of Single-Size Drop Counts From The Poisson Distribution, Alexander Kostinski, A. R. Jameson

Department of Physics Publications

The traditional statistical description of the spatial and temporal distributions of cloud droplets and raindrops is the Poisson process, which tends to place the drops as uniformly as randomness allows. Yet, the “clumpy” nature of clouds and precipitation is apparent to most casual observers and well known to cloud physicists. Is such clumpiness consistent with the Poisson statistics? The authors explore the possibility of deviations from the Poisson distribution using temporal raindrop counting experiments. Disdrometer measurements during the passage of a squall line strongly indicate that a mixture of Poisson distributions (Poisson mixture) provides a better description of the frequency …

Attractors For Nonautonomous Nonhomogeneous Navier-Stokes Equations, A. Miranville, X. Wang

Mathematics and Statistics Faculty Research & Creative Works

In this paper our aim is to derive an upper bound on the dimension of the attractor of the family of processes associated to the Navier-Stokes equations with nonhomogeneous boundary conditions depending on time. We consider two-dimensional flows with prescribed quasiperiodic (in time) tangential velocity at the boundary, and obtain an upper bound which is polynomial with respect to the viscosity.

High Coercivity Smfealc Thin Films Fabricated By Multilayer Sputtering, M.L. Yan, Z.S. Shan, Yi Liu, David J. Sellmyer

David Sellmyer Publications

Multilayer sputtering of SmFe/C(Al) plus appropriate thermal processing has been used to fabricate SmFeC thin films with A1 substitution for Fe. It was found that the SmFeAlC thin films exhibited exceptionally high Coercivities. A coercivity of 28 kOe was realized for the thin film with structure of Ta(l000 Å)/|SmFe(40Å)/ C(Al)(5Å)]x50/Ta(200Å) with subsequent annealing at 650°C.

“Atomic Processes In High Energy Density Plasmas," Summaries Of Fy 1997 Research In The Chemical Sciences, Donald P. Umstadter

Donald Umstadter Publications

Several important plasma atomic processes are studied in a controlled manner. These studies are enabled by the recent invention of ultrashortpulse- duration lasers, which produce plasmas with independently controllable parameters.

Labor Unions And The Distribution Of Wages And Employment In South Africa, T. Paul Schultz, Germano Mwabu

Discussion Papers

No abstract provided.

Identification And Classification Of Inconsistency In Relationship To Software Maintenance, Daniel Cooke, Luqi, Vladik Kreinovich

Departmental Technical Reports (CS)

This paper provides an overview of the relationship between recent work in logic programming and recent developments in software engineering. The relationship to software engineering is more specifically concerned with how formal specifications can be used to explain and represent the basis of software maintenance and evolution. Some of the results reviewed here have appeared in our previous papers. These previous results are summarized, extended, and made more general in this paper.

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 13, Number 7, September 1997, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

A ten page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

Solitary Waves And Atomic Population Transfer Via The Continuum, Foek T. Hioe, C. E. Carroll

Physics Faculty/Staff Publications

Exact analytic results are presented that represent a pair of solitary waves that can propagate through an atomic medium with their shapes invariant while producing transfer of atoms or molecules from one bound state to another via a continuum. The speed of the waves and the amount of population transfer are given in terms of the wave amplitudes. A general ~not solitary wave! solution for the case of a single wave is presented, together with a nonlinear Beer’s law of absorption.

Wellesley College Bulletin [1997-1998], Wellesley College

The Wellesley College Catalogs

No abstract provided.

Geology Of The Ponca Creek And Keya Paha River Drainage Basins In Nebraska, Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

The geology of the study area has been investigated many times over more than a century. Interested readers are directed to the report by Diffendal and Voorhies (1994), which gives a more detailed overview of the results of the investigations and lists most of the more important reports about the area’s geology.

The names of the sedimentary rock strata and unlithified sediments exposed in and underlying all or parts of the study area are shown in Table V.I. These formations range in age from more than 85 million years to sediments being deposited today by winds, water, and downslope movements …

The Faculty Notebook, September 1997, Provost's Office

Faculty Notebook

The Faculty Notebook is published periodically by the Office of the Provost at Gettysburg College to bring to the attention of the campus community accomplishments and activities of academic interest. Faculty are encouraged to submit materials for consideration for publication to the Associate Provost for Faculty Development. Copies of this publication are available at the Office of the Provost.

1997-1998, Collin College

Course Catalogs

Contains information on courses and class descriptions as well as campus resources at Collin College.

Vcu Voice (1997-09-01)

VCU Voice, 1988-1998

VCU Today, the University’s first official administrative organ, began as a somewhat irregular monthly publication but moved to a bi-weekly newspaper format in the 1980s. The newspaper changed its name to VCU Voice in 1988 and ten years later it appeared under the title UniverCity News. As it neared the end of its run as a physical newspaper, the publication became simply VCU News. These four publications were essentially the same periodical published under different titles by the Office of University Relations. VCU News appeared online for the first time in 2002.

Is Accurate Understanding Of Global Warming Necessary To Promote Willingness To Sacrifice?, Richard J. Bord, Ann Fisher, Robert E. O'Connor

RISK: Health, Safety & Environment (1990-2002)

Although not definitive, the authors' study suggests potential benefits from having a general public better informed about global climate change. They find, e.g., that accurate information appears to increase willingness to accept personal sacrifice.

Computational Geometry And Artifical Neural Networks: A Hybrid Approach To Optimal Sensor Placement For Aerospace Nde, Roberto A. Osegueda, Carlos M. Ferregut, Mary J. George, Jose M. Gutierrez, Vladik Kreinovich

Departmental Technical Reports (CS)

The ideal design of an airplane should include built-in sensors that are pre-blended in the perfect aerodynamic shape. Each built-in sensor is expensive to blend in and requires continuous maintenance and data processing, so we would like to use as few sensors as possible. The ideal formulation of the corresponding optimization problem is, e.g., to minimize the average detection error for fault locations. However, there are two obstacles to this ideal formulation:

--First, this ideal formulation requires that we know the probabilities of different fault locations etc., and there are usually not enough statistics to determine these probabilities.

--Second, even …

The Challenge Of Hyper-Spectral Satellite Imaging And Integer-Valued Fuzzy Sets, Maria Beltran, Vladik Kreinovich, Scott A. Starks

Departmental Technical Reports (CS)

Satellite images already produce huge amounts of data, which makes their processing a serious computational challenge. This problem will become even more complicated with the launch of multi-spectral Earth-imaging satellites that will increase the amount of information by at least two orders of magnitude. With such a huge amount of information, it is necessary to come up with data processing methods that are as fast as possible. In particular, we show that for fuzzy processing techniques, this leads to the necessity to use integer-valued fuzzy sets.

Sensor Placement For Aerospace Non-Destructive Evaluation (Nde): Optimization Under Fuzzy Uncertainty, Roberto A. Osegueda, Carlos M. Ferregut, Mary J. George, Jose M. Gutierrez, Vladik Kreinovich

Departmental Technical Reports (CS)

No abstract provided.

We Must Choose The Simplest Physical Theory: Levin-Li-Vitanyi Theorem And Its Potential Physical Applications, Dirk Fox, Martin Schmidt, Misha Kosheleva, Vladik Kreinovich, Luc Longpre, Jeff Kuhn

Departmental Technical Reports (CS)

If several physical theories are consistent with the same experimental data, which theory should we choose? Physicists often choose the simplest theory; this principle (explicitly formulated by Occam) is one of the basic principles of physical reasoning. However, until recently, this principle was mainly a heuristic because it uses the informal notion of simplicity.

With the explicit notion of simplicity coming from the Algorithmic Information theory, it is possible not only to formalize this principle in a way that is consistent with its traditional usage in physics, but also to prove this principle, or, to be more precise, deduce it …

Environmentally-Oriented Processing Of Multi-Spectral Satellite Images: New Challenges For Bayesian Methods, Scott A. Starks, Vladik Kreinovich

Departmental Technical Reports (CS)

Remotely sensed images from new generation satellites present an opportunity for scientists to investigate problems in environmental and earth science which have been previously intractable. The magnitude of data that will arise from these hyperspectral instruments create the need for innovative techniques to accomplish data reduction. This paper presents an algorithm which shows promise as a tool for reducing the dimensionality of data resulting from remote sensing. The optimality criteria for the algorithm is the Bayes Risk in the reduced dimension space.

Graduate Catalog 1997-1998, Kean University

Course Catalogs, 1997 -

Course Catalogs include available majors, course requirements, costs, pictures, a brief institution history, and more.

Catching The Jurisprudential Wave: Bernard Schwartz's Main Currents In American Legal Thought, Robert H. Henry

Tulsa Law Review

No abstract provided.

The Update - September 1997, Nova Southeastern University

The Update

No abstract provided.

Defining And Refining Frameless Rendering, Ellen J. Scher Zagier

Link Foundation Modeling, Simulation and Training Fellowship Reports

Frame1ess Rendering (FR) is a rendering paradigm which performs stochastic temporal filtering by updating pixels in a random order, based on most recent available input data, and displaying them to the screen immediately (3]. It has inherent in its design, visual artifacts that come across as "spatial scatter''. Due to the asynchronicity of pixel updates, a noisy or "scattered" image is perceived if the update rate is not fast enough. We describe the fac1ors that influence the perceptual quality when Frarneless Rendering is implemented such as object and viewpoint velocities, pattern and object size, and pattern and object separation. The …

Catalog 1997-1999, Kingsborough Community College

Course Catalogs

No abstract provided.

Legendrian Circular Helix Links, Lisa Traynor

Mathematics Faculty Research and Scholarship

Examples are given of legendrian links in the manifold of cooriented contact elements of the plane, or equivalently, in the 1-jet space of the circle which are not equivalent via an isotopy of contact diffeomorphisms. These examples have generalizations to linked legendrian spheres in contact manifolds diffeomorphic to R-n x Sn-1. These links are distinguished by applying the theory of generating functions to contact manifolds.

The Probe, Issue 180 - September 1997

The Probe: Newsletter of the National Animal Damage Control Association

CONTENTS:
Vertebrate Repellents: Mechanisms, Practical Applications, Possibilities
CALENDAR OF UPCOMING EVENTS
NADCA Officers' Nominations Needed
Person-to-Person Hantavirus Reported
The Uneasy Conscience of the Animal Rights Movement: Part 2
Children Attacked, One Killed by Colorado Lions
Coyotes as Safety Threat Debated

From Contemporary Workflow Process Automation To Adaptive And Dynamic Work Activity Coordination And Collaboration, Amit P. Sheth

Kno.e.sis Publications

The article outlines a research agenda for researchers in the area of workflow. We believe that today's workflow systems should evolve to what is termed as work coordination and collaboration systems (WCCSs). A WCCS will: (a) adapt to various changes in the organization (including its interactions with external organizations) and the organizational processes by being able to change the process definitions as well as change the processes and component activities while they are being enacted or executed; and (b) support a unified framework for managing coordination, collaboration, and information based decision making activities that naturally occur as part of organizational …

New Center Of Attention: The William H. Pitt Health & Recreation Center, Sacred Heart University

Sacred Heart University Magazine

Sacred Heart University proudly announces the new center of attention, The William H. Pitt Health & Recreation Center. Dedication Ceremony, Sept. 14, 2 P.M.

Cal Poly Magazine, Fall 1997

Cal Poly Magazine

No abstract provided.

Njit Highlanders Men's Basketball 1997-98 Media Guide, New Jersey Institute Of Technology Athletic Department

Basketball - Men's

No abstract provided.