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2006

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Articles 4141 - 4170 of 5872

Full-Text Articles in Physical Sciences and Mathematics

Sub-Pixel Registration In Computational Imaging And Applications To Enhancement Of Maxillofacial Ct Data, Murat Balci Jan 2006

Sub-Pixel Registration In Computational Imaging And Applications To Enhancement Of Maxillofacial Ct Data, Murat Balci

Electronic Theses and Dissertations

In computational imaging, data acquired by sampling the same scene or object at different times or from different orientations result in images in different coordinate systems. Registration is a crucial step in order to be able to compare, integrate and fuse the data obtained from different measurements. Tomography is the method of imaging a single plane or slice of an object. A Computed Tomography (CT) scan, also known as a CAT scan (Computed Axial Tomography scan), is a Helical Tomography, which traditionally produces a 2D image of the structures in a thin section of the body. It uses X-ray, which …


Epidemiological Models For Mutating Pathogens With Temporary Immunity, Neeta Singh Jan 2006

Epidemiological Models For Mutating Pathogens With Temporary Immunity, Neeta Singh

Electronic Theses and Dissertations

Significant progress has been made in understanding different scenarios for disease transmissions and behavior of epidemics in recent years. A considerable amount of work has been done in modeling the dynamics of diseases by systems of ordinary differential equations. But there are very few mathematical models that deal with the genetic mutations of a pathogen. In-fact, not much has been done to model the dynamics of mutations of pathogen explaining its effort to escape the host's immune defense system after it has infected the host. In this dissertation we develop an SIR model with variable infection age for the transmission …


The Stable Manifold Theorem For Semilinear Stochastic Evolution Equations And Stochastic Partial Differential Equations, Salah-Eldin A. Mohammed, Tusheng Zhang, Huaizhong Zhao Jan 2006

The Stable Manifold Theorem For Semilinear Stochastic Evolution Equations And Stochastic Partial Differential Equations, Salah-Eldin A. Mohammed, Tusheng Zhang, Huaizhong Zhao

Articles and Preprints

The main objective of this paper is to characterize the pathwise local structure of solutions of semilinear stochastic evolution equations (see’s) and stochastic partial differential equations (spde’s) near stationary solutions. Such characterization is realized through the long-term behavior of the solution field near stationary points. The analysis falls in two parts 1, 2.

In Part 1, we prove general existence and compactness theorems for Ck-cocycles of semilinear see’s and spde’s. Our results cover a large class of semilinear see’s as well as certain semilinear spde’s with Lipschitz and non-Lipschitz terms such as stochastic reaction diffusion equations and the …


A Q-Continued Fraction, Douglas Bowman, James Mclaughlin, Nancy Wyshinksi Jan 2006

A Q-Continued Fraction, Douglas Bowman, James Mclaughlin, Nancy Wyshinksi

Mathematics Faculty Publications

Let a, b, c, d be complex numbers with d 6= 0 and |q| < 1. Define H1(a, b, c, d, q) := 1 1 + −abq + c (a + b)q + d + · · · + −abq2n+1 + cqn (a + b)q n+1 + d + · · · . We show that H1(a, b, c, d, q) converges and 1 H1(a, b, c, d, q) − 1 = c − abq d + aq P∞ j=0 (b/d) j (−c/bd)j q j(j+3)/2 (q)j (−aq2/d)j P∞ j=0 (b/d) j (−c/bd)j q j(j+1)/2 (q)j (−aq/d)j . We then use this result to deduce various corollaries, including the following: 1 1 − q 1 + q − q 3 1 + q 2 − q 5 1 + q 3 − · · · − q 2n−1 1 + q n − · · · = (q 2 ; q 3 )∞ (q; q 3)∞ , (−aq)∞ X∞ j=0 (bq) j (−c/b)j q j(j−1)/2 (q)j (−aq)j = (−bq)∞ X∞ j=0 (aq) j (−c/a)j q j(j−1)/2 (q)j (−bq)j , and the Rogers-Ramanujan identities, X∞ n=0 q n 2 (q; q)n = 1 (q; q 5)∞(q 4; q 5)∞ , X∞ n=0 q n 2+n (q; q)n = 1 (q 2; q 5)∞(q 3; q 5)∞.


The Convergence Behavior Of Q-Continued Fractions On The Unit Circle, Douglas Bowman, James Mclaughlin Jan 2006

The Convergence Behavior Of Q-Continued Fractions On The Unit Circle, Douglas Bowman, James Mclaughlin

Mathematics Faculty Publications

In a previous paper, we showed the existence of an uncountable set of points on the unit circle at which the Rogers-Ramanujan continued fraction does not converge to a finite value. In this present paper, we generalise this result to a wider class of qcontinued fractions, a class which includes the Rogers-Ramanujan continued fraction and the three Ramanujan-Selberg continued fractions. We show, for each q-continued fraction, G(q), in this class, that there is an uncountable set of points, YG, on the unit circle such that if y ∈ YG then G(y) does not converge to a finite value. We discuss …


Continued Fractions And Generalizations With Many Limits: A Survey, Douglas Bowman, James Mclaughlin Jan 2006

Continued Fractions And Generalizations With Many Limits: A Survey, Douglas Bowman, James Mclaughlin

Mathematics Faculty Publications

There are infinite processes (matrix products, continued fractions, (r, s)-matrix continued fractions, recurrence sequences) which, under certain circumstances, do not converge but instead diverge in a very predictable way. We give a survey of results in this area, focusing on recent results of the authors.


The Abundance Of Different Dragonfly Species At Furman Lake - 2006, Wade Worthen Jan 2006

The Abundance Of Different Dragonfly Species At Furman Lake - 2006, Wade Worthen

Furman Lake Restoration Book Gallery

A line graph showing the abundance of fifteen different species of dragonflies spotted over a five month period at Furman Lake in 2006.


The Radiative Transport Of Dust In Primordial Galaxies And Second-Generation Star Formation, Aparna Venkatesan, Biman B. Nath, J Shull Jan 2006

The Radiative Transport Of Dust In Primordial Galaxies And Second-Generation Star Formation, Aparna Venkatesan, Biman B. Nath, J Shull

Physics and Astronomy

We investigate the radiativetransport of dust inprimordial galaxies in thepresence of the UVradiation field from thefirst metal-free stars. Wefind that dust createdin the first supernova(SN) explosions can bedriven through the interiorof the SN remnantto accumulate in theSN shells, where second-generationstars may form fromcompressed cooling gas. Thisscenario requires metal-free starsto form continuously overtimescales of up to10 Myr, consistent withrecent estimates. Silicate andgraphite grains, as wellas iron-bearing magnetites, aretransported to the shellsfor reasonable parameter assumptions,but their relative yieldsfrom primordial SNe isan important factor inthe resulting abundance ratios.We compare the resultsof segregated grain transportwith the current nucleosyntheticdata on extremely metal-poorGalactic halo stars. Fossilsignatures …


Bedrock And Surficial Geologic Map Of The Red Rock 7.5’ Quadrangle, Beaverhead County, Southwestern Montana, Daryn Reyman-Lock, Christine A. Regalla, David J. Anastasio, Frank J. Pazzaglia Jan 2006

Bedrock And Surficial Geologic Map Of The Red Rock 7.5’ Quadrangle, Beaverhead County, Southwestern Montana, Daryn Reyman-Lock, Christine A. Regalla, David J. Anastasio, Frank J. Pazzaglia

History Faculty Publications

The Red Rock 7.5 minute quadrangle, located in Beaverhead County, southwestern Montana, spans the Red Rock River Valley, an extensional graben formed between the Tendoy mountain front and the western flank of the Blacktail-Snowcrest uplift (Fig. 1). Notable landmarks within the quadrangle include the Clark Canyon Reservoir (Bureau of Reclamation dam number MT00569) located in the northwest area of the quadrangle and Interstate 15 which runs northwest-southeast through the quadrangle. The highest elevations in the map area are located within the Tendoy Mountains and the Red Rock Hills and are underlain by Paleozoic and Cenozoic bedrock. From these points, broad …


Analysis Of Response Calls To Diverse Ground Predators From Three Geographically Separate Florida Scrub-Jay (Aphelocoma Coerulescens) Subpopulations, Sarah A. (Bales) Douglass Jan 2006

Analysis Of Response Calls To Diverse Ground Predators From Three Geographically Separate Florida Scrub-Jay (Aphelocoma Coerulescens) Subpopulations, Sarah A. (Bales) Douglass

Master of Environmental Science (MES) Theses

Dialectic variation occurs in many bird species. Different factors have been investigated regarding dialectic variation, including cultural and genetic transmission of songs or calls, and geographic separation. In this study, the predator alarm call of the Florida Scrub-Jay to ground predators was recorded in three geographically separate subpopulations across Florida—Canaveral National Seashore/Merritt Island National Wildlife Refuge, Lyonia Preserve and Leisure Lakes/Lake June in Winter Scrub State Park—to examine any dialectic occurrence between these three subpopulations. Additionally, many bird species are recognized as having highly evolved predator recognition systems, often with different calls for specific predators. The Florida Scrub Jay has …


Geographical Information System Analysis Of Great Blue Heron (Ardea Herodias) Colony Site Selection In Northeastern Indiana, Jason M. Kauffman Jan 2006

Geographical Information System Analysis Of Great Blue Heron (Ardea Herodias) Colony Site Selection In Northeastern Indiana, Jason M. Kauffman

Master of Environmental Science (MES) Theses

Seventeen Great Blue Heron (Ardea herodias) nesting colonies were studied in northeastern Indiana to determine which natural and human variables, within 15 km of each heronry, correlated with the size and location of this bird’s nesting sites. The data collected in the field and with ArcMap, a Geographical Information System program, included: the types and distances to human disturbances and water/foraging sources; wetland size and type; the height, dbh, and species of nesting trees; and the number of active and total nests. This information was used to produce an individual map for each heronry as well as a …


The Planet, 2006, Winter, Sarah M. Kuck, Huxley College Of The Environment, Western Washington University Jan 2006

The Planet, 2006, Winter, Sarah M. Kuck, Huxley College Of The Environment, Western Washington University

The Planet

No abstract provided.


Flow Resistance Dynamics In Step-Pool Stream Channels: 1. Large Woody Debris And Controls On Total Resistance, Andrew C. Wilcox, Ellen E. Wohl Jan 2006

Flow Resistance Dynamics In Step-Pool Stream Channels: 1. Large Woody Debris And Controls On Total Resistance, Andrew C. Wilcox, Ellen E. Wohl

Geosciences Faculty Publications

Flow resistance dynamics in step-pool channels were investigated through physical modeling using a laboratory flume. Variables contributing to flow resistance in step-pool channels were manipulated in order to measure the effects of various large woody debris (LWD) configurations, steps, grains, discharge, and slope on total flow resistance. This entailed nearly 400 flume runs, organized into a series of factorial experiments. Factorial analyses of variance indicated significant two-way and three-way interaction effects between steps, grains, and LWD, illustrating the complexity of flow resistance in these channels. Interactions between steps and LWD resulted in substantially greater flow resistance for steps with LWD …


Flow Resistance Dynamics In Step-Pool Channels: 2. Partitioning Between Grain, Spill, And Woody Debris Resistance, Andrew C. Wilcox, Jonathan M. Nelson, Ellen E. Wohl Jan 2006

Flow Resistance Dynamics In Step-Pool Channels: 2. Partitioning Between Grain, Spill, And Woody Debris Resistance, Andrew C. Wilcox, Jonathan M. Nelson, Ellen E. Wohl

Geosciences Faculty Publications

In step-pool stream channels, flow resistance is created primarily by bed sediments, spill over step-pool bed forms, and large woody debris (LWD). In order to measure resistance partitioning between grains, steps, and LWD in step-pool channels we completed laboratory flume runs in which total resistance was measured with and without grains and steps, with various LWD configurations, and at multiple slopes and discharges. Tests of additive approaches to resistance partitioning found that partitioning estimates are highly sensitive to the order in which components are calculated and that such approaches inflate the values of difficult-to-measure components that are calculated by subtraction …


Groundwater Quality In Kentucky: Barium, Bart Davidson, R. Stephen Fisher Jan 2006

Groundwater Quality In Kentucky: Barium, Bart Davidson, R. Stephen Fisher

Information Circular--KGS

Barium is a silver-white alkaline earth metal that is not found free in nature because it is highly reactive with sulfate and carbonate. Barium compounds can be naturally occurring or man-made. The most common natural occurrence of barium is in the mineral barite (barium sulfate), which has many uses in industry, such as a filler in the making of rubber, plastic and resin, white pigment, drilling lubricants used in the oil and gas industry, paint, bricks and glass (Agency for Toxic Substances and Disease Registry, 2004). Barium sulfate is very slightly soluble in water and absorbs X-rays, making it an …


Chemical Analysis Of Fish Tissue: Kentucky Army National Guard Wendell H. Ford Western Kentucky Training Site, Muhlenberg County, Kentucky, Steven E. Webb, James S. Dinger, Dennis H. Cumbie Jan 2006

Chemical Analysis Of Fish Tissue: Kentucky Army National Guard Wendell H. Ford Western Kentucky Training Site, Muhlenberg County, Kentucky, Steven E. Webb, James S. Dinger, Dennis H. Cumbie

Information Circular--KGS

Thirty-one analytes were measured in fish tissue taken from largemouth bass, catfish, and bluegill harvested from lakes and ponds in reclaimed and unreclaimed coal-mine spoil of Pennsylvanian age. The spoil area is approximately 7,756 acres created primarily from surface mining, and has been used in increasing intensity since 1969 as a training site by the Kentucky Army National Guard. Four fish were harvested for analysis from the area of unreclaimed spoil that resulted from mining prior to 1977, and 15 fish were harvested for analysis from the part of the training facility that was reclaimed by 1985. Twenty-six analytes had …


Scwds Briefs: Volume 21, Number 4 (January 2006), Gary L. Doster , Editor, Scwds Briefs, Michael J. Yabsley Jan 2006

Scwds Briefs: Volume 21, Number 4 (January 2006), Gary L. Doster , Editor, Scwds Briefs, Michael J. Yabsley

Southeastern Cooperative Wildlife Disease Study: Publications

Avian Influenza Update
SCWDS Arthropod Surveillance
Bovine Tuberculosis in a Minnesota Deer
Raccoons and Rehabilitation
Rabies in Wildlife
Chronic Wasting Disease Update: Colorado, Kansas, New Mexico, West Virginia, Wisconsin, Alberta
Chronic Wasting Disease Research News
Idaho Loses Brucellosis-Free Status
SCWDS Loses Two Good Friends: Dr. Vagn Folkman Flyger and Dr. James Hobart Jenkins


Generalized Geologic Map For Land-Use Planning: Carroll County, Kentucky, Richard A. Smath, Bart Davidson, Daniel I. Carey, John D. Kiefer Jan 2006

Generalized Geologic Map For Land-Use Planning: Carroll County, Kentucky, Richard A. Smath, Bart Davidson, Daniel I. Carey, John D. Kiefer

Map and Chart--KGS

This map is not intended to be used for selecting individual sites. Its purpose is to inform land-use planners, government officials, and the public in a general way about geologic bedrock conditions that affect the selection of sites for various purposes. The properties of thick soils may supercede those of the underlying bedrock and should be considered on a site-to-site basis. At any site, it is important to understand the characteristics of both the soils and the underlying rock.


Generalized Geologic Map For Land-Use Planning: Grant County, Kentucky, Richard A. Smath, Daniel I. Carey, Preston Lacy Jan 2006

Generalized Geologic Map For Land-Use Planning: Grant County, Kentucky, Richard A. Smath, Daniel I. Carey, Preston Lacy

Map and Chart--KGS

This map is not intended to be used for selecting individual sites. Its purpose is to inform land-use planners, government officials, and the public in a general way about geologic bedrock conditions that affect the selection of sites for various purposes. The properties of thick soils may supercede those of the underlying bedrock and should be considered on a site-to-site basis. At any site, it is important to understand the characteristics of both the soils and the underlying rock.


Generalized Geologic Map For Land-Use Planning: Boyd County, Kentucky, Richard A. Smath, Bart Davidson, Daniel I. Carey Jan 2006

Generalized Geologic Map For Land-Use Planning: Boyd County, Kentucky, Richard A. Smath, Bart Davidson, Daniel I. Carey

Map and Chart--KGS

This map is not intended to be used for selecting individual sites. Its purpose is to inform land-use planners, government officials, and the public in a general way about geologic bedrock conditions that affect the selection of sites for various purposes. The properties of thick soils may supercede those of the underlying bedrock and should be considered on a site-to-site basis. At any site, it is important to understand the characteristics of both the soils and the underlying rock.


Generalized Geologic Map For Land-Use Planning: Bourbon County, Kentucky, Daniel I. Carey Jan 2006

Generalized Geologic Map For Land-Use Planning: Bourbon County, Kentucky, Daniel I. Carey

Map and Chart--KGS

This map is not intended to be used for selecting individual sites. Its purpose is to inform land-use planners, government officials, and the public in a general way about geologic bedrock conditions that affect the selection of sites for various purposes. The properties of thick soils may supercede those of the underlying bedrock and should be considered on a site-to-site basis. At any site, it is important to understand the characteristics of both the soils and the underlying rock.


Generalized Geologic Map For Land-Use Planning: Pike County, Kentucky, Richard A. Smath, Daniel I. Carey, Bart Davidson, Alex W. Fogle Jan 2006

Generalized Geologic Map For Land-Use Planning: Pike County, Kentucky, Richard A. Smath, Daniel I. Carey, Bart Davidson, Alex W. Fogle

Map and Chart--KGS

This map is not intended to be used for selecting individual sites. Its purpose is to inform land-use planners, government officials, and the public in a general way about geologic bedrock conditions that affect the selection of sites for various purposes. The properties of thick soils may supercede those of the underlying bedrock and should be considered on a site-to-site basis. At any site, it is important to understand the characteristics of both the soils and the underlying rock.


Generalized Geologic Map For Land-Use Planning: Breckinridge County, Kentucky, Daniel I. Carey, Daniel L. Kotter, E. Glynn Beck, Joseph D. Buckles Jan 2006

Generalized Geologic Map For Land-Use Planning: Breckinridge County, Kentucky, Daniel I. Carey, Daniel L. Kotter, E. Glynn Beck, Joseph D. Buckles

Map and Chart--KGS

This map is not intended to be used for selecting individual sites. Its purpose is to inform land-use planners, government officials, and the public in a general way about geologic bedrock conditions that affect the selection of sites for various purposes. The properties of thick soils may supercede those of the underlying bedrock and should be considered on a site-to-site basis. At any site, it is important to understand the characteristics of both the soils and the underlying rock.


Clustering Spatial Data For Join Operations Using Match-Based Partition, Jitian Xiao Jan 2006

Clustering Spatial Data For Join Operations Using Match-Based Partition, Jitian Xiao

Research outputs pre 2011

The spatial join is an operation that combines two sets of spatial data by their spatial relationships. The cost of spatial join could be very high due to the large sizes of spatial objects and the computation-intensive spatial operations. In spatial join processing, a common method to minimize the I/O cost is to partition the spatial objects into clusters and then schedule the processing of the clusters such that the number of times the same objects to be fetched into memory can be minimized. In this paper, we propose a match-based approach to partition a large spatial data set into …


Peak Oil, Geopolitics And The Need For Relocalization: Will Our Magnificent Obsession Become Our Obsolete Obsession?, John E. Carroll Jan 2006

Peak Oil, Geopolitics And The Need For Relocalization: Will Our Magnificent Obsession Become Our Obsolete Obsession?, John E. Carroll

The University Dialogue

This essay will look at the peak oil question, contemporary “oil geopolitics” and their effect not only on energy supplies, but also on transportation, agriculture and food supplies, and population distribution in the United States. While the war in Iraq forms a centerpiece in the geopolitical scene, Russia, China, and other nations will be discussed as well. This essay will also examine the inevitable relocalization which appears to be a necessary result.


Research Report 2006-2007, College Of Arts And Sciences Jan 2006

Research Report 2006-2007, College Of Arts And Sciences

Physics Research Reports

  • Introduction
  • From the Chairperson
  • Astronomy
  • Atomic Physics
  • Nuclear Physics
  • Physics Education
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International Extension Program Online Registration System, Hau Yu Jan 2006

International Extension Program Online Registration System, Hau Yu

Theses Digitization Project

The International Extension Program Online Registration System (IEPORS) allows prospective international students to apply over the Web to the programs offered through the International Extension Program of the College of Extended Learning. The system is comprised of two separate systems: a web application and a desktop application. In this project, Hibernate technique is used to reduce code size and system architecture. Security schema was also modified to be simple and solidly secure. All the private information could be interceped on the Internet are protected by SSL (secure Sockets Layer).


The Effect Of The Exposure To Domestic Violence On Psychological Well-Being Among American Muslim Women, Soulafa Shakhshir Massoud, Vanessa Francis Romo Jan 2006

The Effect Of The Exposure To Domestic Violence On Psychological Well-Being Among American Muslim Women, Soulafa Shakhshir Massoud, Vanessa Francis Romo

Theses Digitization Project

A quantitative study that examines American Muslim women's level of exposure to domestic violence, resources available to them, and the effect of domestic violence on their psychological well-being. Data was collected from 128 Muslim women from the Islamic Center of Riverside in Southern California. The key finding of the study was a significant positive relationship between depression and the use of verbal aggression. In addition, a positive relationship was found to exist between anxiety, depression and the use of violence.


Integrated Apartment Management System, Feng-Ming Hu Jan 2006

Integrated Apartment Management System, Feng-Ming Hu

Theses Digitization Project

The Integrated Apartment Management System (IAMS) is a web-based system that allows tenants to make appointments with repairmen on line and notify both apartment managers and repairmen of appointments through an email directly from IAMS. IAMS also keeps a database of appointments, repairs, and payments that can be accessed by tenants, repairmen, and apartment managers.


Lessons From Monitoring Trends In Abundance Of Marine Mammals, Barbara L. Taylor, Melissa Martinez, Tim Gerrodette, Jay Barlow, Yvana N. Hrovat Jan 2006

Lessons From Monitoring Trends In Abundance Of Marine Mammals, Barbara L. Taylor, Melissa Martinez, Tim Gerrodette, Jay Barlow, Yvana N. Hrovat

United States Department of Commerce: Staff Publications

We assessed scientists’ ability to detect declines of marine mammal stocks based on recent levels of survey effort, when the actual decline is precipitous. We defined a precipitous decline as a 50% decrease in abundance in 15 yr, at which point a stock could be legally classified as “depleted” under the U.S. Marine Mammal Protection Act.We assessed stocks for three categories of cetaceans: large whales (n = 23, most of which are listed as endangered), beaked whales (n = 11, potentially vulnerable to anthropogenic noise), and small whales/dolphins/porpoises (n = 69, bycatch in fisheries and important abundant …