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Articles 1741 - 1770 of 2472
Full-Text Articles in Physical Sciences and Mathematics
Rodent Exclusion Techniques, Gerard Hoddenbach, Jerry Johnson, Carol Disalvo
Rodent Exclusion Techniques, Gerard Hoddenbach, Jerry Johnson, Carol Disalvo
Other Publications in Wildlife Management
Rodents have been a common problem in living and working environments, probably, ever since humans began living in permanent dwellings. Even today many people believe rodent infestations are "inevitable". However, the recent appearance of Hantavirus (Sin Nombre Virus, Hantavirus Pulmonary Syndrome, HPS) in the Western states has re-awakened the public to the serious health problems posed by rodents and has prompted new inquiries into more effective ways to manage infestations. This manual is designed as a training reference for making rodent control in buildings an attainable goal.
Institutional Animal Care And Use Committees: A Flawed Paradigm Or Work In Progress?, John P. Gluck, F. Barbara Orlans
Institutional Animal Care And Use Committees: A Flawed Paradigm Or Work In Progress?, John P. Gluck, F. Barbara Orlans
Animal Welfare Collection
In his challenging article, Steneck (1997) criticized the creation of the Institutional Animal Care and Use Committee (IACUC) system established by the 1985 amendments to the Animal Welfare Act. He saw the IACUC review and approval of biomedical and behavioral research with animals as an unnecessary "reassignment" of duties from existing animal care programs to IACUC committees. He argued that the committees are unable to do the work expected of them for basically three reasons: (a) the membership lacks the expertise in matters relevant to animal research and care, (b) there exists an inherent and disabling conflict of interest, and …
Genetic Divergence And Evolutionary Times: Calibrating A Protein Clock For South-European Stenasellus Species (Crustacea Isopoda), Valerio Ketmaier, Roberto Argano, Marina Cobolli, Elvira De Matthaeis
Genetic Divergence And Evolutionary Times: Calibrating A Protein Clock For South-European Stenasellus Species (Crustacea Isopoda), Valerio Ketmaier, Roberto Argano, Marina Cobolli, Elvira De Matthaeis
International Journal of Speleology
We studied genetic divergence in a group of exclusively stygobiont isopods of the family Stenasellidae. In particular, we assessed evolutionary relationships among several populations of Stenasellus racovitzai and Stenasellus virei. To place this study in a phylogenetic context. we used another species of Stenasellus, S. assorgiai, as an outgroup. S. racovitzai occurs in Corsica, Sardinia and in the fossil islands of the Tuscan Archipelago, while S. virei is a polytypic species widely distributed in the central France and Pyrenean area. This vicariant distribution is believed to be the result of the disjunction of the Sardinia-Corsica microplate from …
The Interaction Of A Point Vortex With A Wall-Bounded Vortex Layer, Oliver V. Atassi, Andrew J. Bernoff, Seth Lichter
The Interaction Of A Point Vortex With A Wall-Bounded Vortex Layer, Oliver V. Atassi, Andrew J. Bernoff, Seth Lichter
All HMC Faculty Publications and Research
The interaction of a point vortex with a layer of constant vorticity, bounded below by a wall and above by an irrotational flow, is investigated as a model of vortex–boundary layer interaction. This model calculates both the evolution of the interface which separates the vortex layer from the irrotational flow and the trajectory of the vortex. In order to determine the conditions which lead to sustained unsteady interaction, three cases are investigated where the mutual interaction between the vortex and interface is initially assumed to be weak. (i) When a weak point vortex lies outside the layer, the vortex moves …
Positive Solution Curves Of Semipositone Problems With Concave Nonlinearities, Alfonso Castro, Sudhasree Gadam, Ratnasingham Shivaji
Positive Solution Curves Of Semipositone Problems With Concave Nonlinearities, Alfonso Castro, Sudhasree Gadam, Ratnasingham Shivaji
All HMC Faculty Publications and Research
We consider the positive solutions to the semilinear equation:
-Δu(x) = λf(u(x)) for x ∈ Ω
u(x) = 0 for x ∈ ∂Ω
where Ω denotes a smooth bounded region in RN (N > 1) and λ > 0. Here f :[0, ∞)→R is assumed to be monotonically increasing, concave and such that f(0) < 0 (semipositone). Assuming that f'(∞) ≡ lim t→∞ f'(t) > 0, we establish the stability and uniqueness of large positive solutions in terms of (f(t)/t)'. When Ω is a ball, we determine the exact number of positive solutions for each λ > 0. We also obtain the geometry of the branches of positive solutions completely and establish how …
Indicator Bacteria Concentrations Of Two Northwest Arkansas Streams In Relation To Flow And Season, Dwayne R. Edwards, Mark S. Coyne, Tommy C. Daniel, P. F. Vendrell, J. F. Murdoch, P. A. Moore Jr.
Indicator Bacteria Concentrations Of Two Northwest Arkansas Streams In Relation To Flow And Season, Dwayne R. Edwards, Mark S. Coyne, Tommy C. Daniel, P. F. Vendrell, J. F. Murdoch, P. A. Moore Jr.
Biosystems and Agricultural Engineering Faculty Publications
Concentrations of indicator bacteria such as fecal coliform (FC) and fecal streptococcus (FS) are often used to assess the suitability of waters for their intended use(s) and to allocate resources for water quality improvement measures. There is evidence, however, that concentrations of FC and FS can be influenced by variables such as season and flow rate during sampling, which could lead to biased results. The objective of this study was to assess the impacts of season and flow rate on concentrations of FC and FS. Fecal indicator bacteria concentrations were measured for approximately three years at five sites on two …
The Recursive Multi-Threaded Software Life-Cycle, Scott James Simon
The Recursive Multi-Threaded Software Life-Cycle, Scott James Simon
Theses Digitization Project
No abstract provided.
Environmental Science Activities For Use Within The Ninth Grade Houses Of Lancaster High School, Robert Louis Whitney
Environmental Science Activities For Use Within The Ninth Grade Houses Of Lancaster High School, Robert Louis Whitney
Theses Digitization Project
No abstract provided.
International Student Services Opportunity Database (Issodb), Sailaja Malireddy
International Student Services Opportunity Database (Issodb), Sailaja Malireddy
Theses Digitization Project
No abstract provided.
Mojave Desert Issues: A High School Curriculum, Bruce William Bridenbecker
Mojave Desert Issues: A High School Curriculum, Bruce William Bridenbecker
Theses Digitization Project
No abstract provided.
Behavioral Responses Of Bottlenose Dolphins To Remote Biopsy Sampling And Observations Of Surgical Biopsy Wound Healing, David W. Weller, Victor G. Cockcroft, Bernd Würsig, Spencer K. Lynn, Dagmar Fertl
Behavioral Responses Of Bottlenose Dolphins To Remote Biopsy Sampling And Observations Of Surgical Biopsy Wound Healing, David W. Weller, Victor G. Cockcroft, Bernd Würsig, Spencer K. Lynn, Dagmar Fertl
United States Department of Commerce: Staff Publications
Information on reactions of delphinids to biopsy sampling and healing of associated biopsy wounds is limited. Results presented here report on the behavioral responses of free-ranging bottlenose dolphins (Tursiops truncatus) to remote biopsy sampling procedures, and provide information on stages of surgical biopsy wound repair. Biopsy samples of free-ranging dolphins were collected between February–May 1992 in Galveston Bay, Texas, using a sterilized corer-tipped bolt, launched from a crossbow. A total of 8 direct ‘hits’ were documented, 4 hits (50%) in which a tissue sample was obtained, 2 hits (25%) from which no sample was retrieved, and 2 hits …
First Estimates Of Vaquita Abundance, Jay Barlow, Tim Gerrodette, Greg Silber
First Estimates Of Vaquita Abundance, Jay Barlow, Tim Gerrodette, Greg Silber
United States Department of Commerce: Staff Publications
The abundance of the only population of vaquitas, Gulf of California harbor porpoise (Phocoena sinus), is estimated from four surveys conducted in Mexico between 1986 and 1993, using a variety of methods. A line-transect approach was applied, using some parameters estimated from a related species, the harbor porpoise (Phocoena phocoena). Vaquita abundance is estimated as 503 (CV = 0.63) from 1986-1988 boat surveys, 885 (CV = 0.50) from 1988-- 1989 aerial surveys, 572 (CV = 1.43) from a 1991 aerial survey, and 224 (CV = 0.39) from a 1993 ship survey. A weighted log-linear regression in …
Response Surface Methodology: An Analytical Method For Locating Migrated Contaminant Sources, Orlando J. Dona Jr.
Response Surface Methodology: An Analytical Method For Locating Migrated Contaminant Sources, Orlando J. Dona Jr.
Theses and Dissertations
The use and storage of hazardous chemicals at U.S. military facilities often adversely affect the groundwater when contaminants infiltrate the subsurface as a result of leaks and accidental spills. These contaminants, if not located and remediated in a relatively short time, may move and settle unpredictably, essentially creating a source some distance from the original leak or spill. An example of this phenomenon is found with migrating dense nonaqueous phase liquid (DNAPL) contaminants. Although various methods for estimating the present day locations of these migrated contaminants are in use, accurately pinpointing the source of contaminants remains a difficult problem in …
The Probe, Issue 173 – January/February 1997
The Probe, Issue 173 – January/February 1997
The Probe: Newsletter of the National Animal Damage Control Association
From The President... -- Gene LeBoeuf
James E. (Jim) Forbes retifed on December 31 as ADC State Director in New York.
Donald Hawthorne returned to the state of Oklahoma as State Director of USD A-APHIS-ADC, effective December 8.
A strain of rabies carried primarily by raccoons has spread to the Midwest from the mid-Atlantic states.
A Colorado woman was killed by two wolf hybrids in December, according to the El Paso Co. sheriffs office.
According to Range magazine, half of the 40 endangered black-footed ferrets transplanted into Montana to establish a new colony have been killed by coyotes.
It has …
The Nordstrom–Robinson Code Is Algebraic-Geometric, Judy L. Walker
The Nordstrom–Robinson Code Is Algebraic-Geometric, Judy L. Walker
Department of Mathematics: Faculty Publications
The techniques of algebraic geometry have been widely and successfully applied to the study of linear codes over finite field since the early 1980’s. Recently, there has been an increased interest in the study of linear codes over finite rings. In a previous paper [10], we combined these two approaches to coding theory by introducing and studying algebraic-geometric codes over rings. In this correspondence, we show that the Nordstrom–Robinson code is the image under the Gray mapping of an algebraic geometric code over Z = 4Z.
Review Of Personal Identification Systems, J. M. Cross
Review Of Personal Identification Systems, J. M. Cross
Research outputs pre 2011
The growth of the use of biometric personal identification systems has been relatively steady over the last 20 years. The expected biometric revolution which was forecast since the mid 1970's has not yet occurred. The main factor for lower than expected growth has been the cost and user acceptance of the systems. During the last few years, however, a new generation of more reliable, less expensive and better designed biometric devices have come onto the market. This combined with the anticipated expansion of new reliable, user friendly inexpensive systems provides a signal that the revolution is about to begin. This …
Effect Of Sulfate On The Release Rate Of Al3+ From Gibbsite In Low-Temperature Acidic Waters, Moira K. Ridley, David J. Wesolowski, Donald A. Palmer, Pascale Bénézeth, Richard Kettler
Effect Of Sulfate On The Release Rate Of Al3+ From Gibbsite In Low-Temperature Acidic Waters, Moira K. Ridley, David J. Wesolowski, Donald A. Palmer, Pascale Bénézeth, Richard Kettler
Department of Earth and Atmospheric Sciences: Faculty Publications
Solubility experiments were performed at 5 °C by reacting 1 g of powdered gibbsite with 45 g of aqueous H2SO4-NaCl and HCl-NaCl (0.01 m H+) solutions at 0.1 m ionic strength. The kinetics of dissolution were monitored under extremely undersaturated conditions and appeared to favor a zero-order rate-determining process. The dissolution rate of gibbsite in the sulfate solution was approximately 10 times faster than in the HCl solution, which is consistent with trends reported in the literature for studies performed at higher temperatures. The enhanced dissolution kinetics of gibbsite (and by analogy, other aluminum-containing minerals) in …
Contents
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
Journal Of Mathematics And Science: Collaborative Explorations
Journal Of Mathematics And Science: Collaborative Explorations
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
1997-1998 Nova Southeastern University Center For Undergraduate Studies Catalog, Nova Southeastern University
1997-1998 Nova Southeastern University Center For Undergraduate Studies Catalog, Nova Southeastern University
Undergraduate Programs Course Catalogs
No abstract provided.
Analysis Of Mercury Coordination Environments Of Tridentate And Tetradentate Nitrogen Based Ligands By Nmr Spectroscopy And X-Ray Crystallography, Rachel E. Freer
Analysis Of Mercury Coordination Environments Of Tridentate And Tetradentate Nitrogen Based Ligands By Nmr Spectroscopy And X-Ray Crystallography, Rachel E. Freer
Dissertations, Theses, and Masters Projects
No abstract provided.
Timestamp-Based Approach For The Detection And Resolution Of Mutual Conflicts In Distributed Systems, Sanjay Kumar Madria
Timestamp-Based Approach For The Detection And Resolution Of Mutual Conflicts In Distributed Systems, Sanjay Kumar Madria
Computer Science Faculty Research & Creative Works
We present a timestamp based algorithm for the detection of both write-write and read-write conflicts for a single file in distributed systems during network partitions. Our algorithm allows operations to occur in different network partitions simultaneously. When the sites from different partitions merge, the algorithm detects and resolves both read-write and write-write conflicts without taking into account the semantics of the transactions. Once the conflicts have been detected some reconciliation steps for the resolution of conflicts have also been proposed. Our algorithm will be useful in real-time systems where timeliness of operations is more important than response time (delayed commit)
Direct Finite First-Order Model Generation With Negative Constraint Propagation Heuristic, Olga Shumsky, Ralph W. Wilkerson, Fikret Ercal, William W. Mccune
Direct Finite First-Order Model Generation With Negative Constraint Propagation Heuristic, Olga Shumsky, Ralph W. Wilkerson, Fikret Ercal, William W. Mccune
Computer Science Faculty Research & Creative Works
An Automated Finite First-Order Model Generator Has Been Developed. the Problem is Viewed as a First-Order Satisfiability Problem. Most Existing Model Generators Reduce the Problem to Propositional Satisfiability by Converting the Input First-Order Clauses into Propositional Clauses. This Generator, Unlike Others, Stores the Input First-Order Clauses and Solves the Problem Directly. It Uses an Exhaustive Backtracking Algorithm with Weight-Based Splitting. a Negative Constraint Propagation is Implemented to Reduce the Number of Decision Points and Thus to Speed Up the Search. © 1997 ACM.
Evolutionary Computation Applied To Adaptive Information Filtering, Daniel R. Tauritz, Ida G. Sprinkhuizen-Kuyper, Joost N. Kok
Evolutionary Computation Applied To Adaptive Information Filtering, Daniel R. Tauritz, Ida G. Sprinkhuizen-Kuyper, Joost N. Kok
Computer Science Faculty Research & Creative Works
Information Filtering is concerned with filtering data streams in such a way as to leave only pertinent data (information) to be perused. When the data streams are produced in a changing environment the filtering has to adapt too in order to remain effective. Adaptive Information Filtering is concerned with filtering in changing environments. The changes may occur both on the transmission side (the nature of the streams can change), and on the reception side (the interest of a user can change). Weighted trigram analysis is a quick and flexible technique for describing the contents of a document. A novel application …
Resource Law Notes Newsletter, No. 39, Winter Issue, Feb. 1997, University Of Colorado Boulder. Natural Resources Law Center
Resource Law Notes Newsletter, No. 39, Winter Issue, Feb. 1997, University Of Colorado Boulder. Natural Resources Law Center
Resource Law Notes: The Newsletter of the Natural Resources Law Center (1984-2002)
No abstract provided.
Electron Shock Waves: Effect Of Current On Electron Temperature And Density, Mostafa Hemmati, Mathues Shane Doss
Electron Shock Waves: Effect Of Current On Electron Temperature And Density, Mostafa Hemmati, Mathues Shane Doss
Journal of the Arkansas Academy of Science
In our attempt to find analytical solutions for breakdown waves, we employ a set of three-component fluid equations. In addition to reporting the method of integration of electron fluid dynamical equations through the dynamical transition region (sheath region), the wave profile for ionization rate, electron number density and electron temperature inside the sheath will be discussed. Also, the effect of the current on electron temperature, electron number density and ionization rate will be reported.
Developing Mathematics Enrichment Workshops For Middle School Students: Philosophy And Sample Workshops, H. Keynes, A. Olson, K. Singer
Developing Mathematics Enrichment Workshops For Middle School Students: Philosophy And Sample Workshops, H. Keynes, A. Olson, K. Singer
Journal of Mathematics and Science: Collaborative Explorations
This paper describes our approach to organizing enrichment activities using advanced mathematics topics for diverse audiences of middle school students. We discuss our philosophy and approaches for the structure of these workshops, and then provide sample schedules and resource materials. The workshops cover activities on the following topics: Graphing Calculators; The Chaos Game; Statistical Sampling; CT Scans–the reconstruction problem; The Platonic and Archimedean solids; The Shape of Space; Symmetry; The Binary Number System and the game of NIM; Graph Theory: Proof by Counterexample.
Student Work Section, R. Howard
Student Work Section, R. Howard
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
Properties And Macromolecular Structure Of Unacetylated And Acetylated Nata De Coco, Ma. Assunta C. Cuyegkeng, Ma. Amy L. Dimalanta
Properties And Macromolecular Structure Of Unacetylated And Acetylated Nata De Coco, Ma. Assunta C. Cuyegkeng, Ma. Amy L. Dimalanta
Chemistry Faculty Publications
This study aims to gain more insight into the supramolecular structure of the cellulose in nata de coco, and to compare its ability to be modified with the known types of cellulose. The investigations were done using IR spectroscopy and thennal analysis. The IR spectra of microcrystalline cellulose were identical to cellulose spectra. However, those of dried nata de coco cellulose showed additional peaks that indicated a loss of inter- and intra-sheet hydrogen bonding, usually extensive in other cellulose forms where sheets are the prevalent secondary structures. This kind of structure would be consistent with the necessary framework for gel …
Privacy Issues Dealing With Technology : A Review Of The Literature, Kimberly S. Mccoy
Privacy Issues Dealing With Technology : A Review Of The Literature, Kimberly S. Mccoy
Graduate Research Papers
The sophisticated applications of technology are expanding everyday. Unfortunately, so are the many concerns individuals in society are having about their right to privacy. The actual regulations dealing with one's right to privacy has not expand as rapidly as the applications of technology. Individuals using various types of technology are under the assumption their activities are private; however, this is not the case. It does not seem to matter if you are using a computer for communications work, school, or in the "privacy" of your own home, there is absolutely no privacy when dealing with this type of technology.
This …