Digital Commons Network^™

Theory And Application Of Motion Compensation For Lfm-Cw Sar, David G. Long, Evan C. Zaugg

Faculty Publications

Small low-cost high-resolution synthetic aperture radar (SAR) systems are made possible by using a linear frequency-modulated continuous-wave (LFM-CW) signal. SAR processing assumes that the sensor is moving in a straight line at a constant speed, but in actuality, an unmanned aerial vehicle (UAV) or airplane will often significantly deviate from this ideal. This nonideal motion can seriously degrade the SAR image quality. In a continuous-wave system, this motion happens during the radar pulse, which means that existing motion compensation techniques that approximate the position as constant over a pulse are limited for LFM-CW SAR. Small aircraft and UAVs are particularly …

Enhancement Of Unusual Color In Aerial Video Sequences For Assisting Wilderness Search And Rescue, Bryan S. Morse, Nathan D. Rasmussen, Daniel Thornton

Faculty Publications

The use of aerial video for search and surveillance has been popularized by the increased use of camera-equipped unmanned aerial vehicles. For many search applications, objects may also be missed by observers due to their small size, brief visibility, or the inherent monotony of the scene. This paper presents a novel method for automatically emphasizing unusually colored objects to improve their detectability. We use a hue histogram and a local saliency measure to find unusually colored objects, then boost the saturation of these objects while desaturating more common colors, thus drawing the observer’s attention and facilitating video search.

Hop-By-Hop Multicast Transport For Mobile Ad Hoc Wireless Networks, Manoj Pandey, Daniel Zappala

Faculty Publications

Multicast transport is a challenging problem because the source must provide congestion control and reliability for a tree, rather than a single path. This problem is made even more difficult in mobile ad hoc networks due to problems caused by contention, spatial reuse, and mobility. In this paper, we design a hop-by-hop multicast transport protocol, which pushes transport functionality into the core of the network. Although this requires per-flow state, a hop-by-hop approach simplifies congestion control, enables local recovery of lost packets, and provides low delay and efficient use of wireless capacity. We use a simulation study to demonstrate the …

Scalable Multicast Routing For Ad Hoc Networks, Manoj Pandey, Daniel Zappala

Faculty Publications

Routing in a mobile ad hoc network is challenging because nodes can move at any time, invalidating a previously-discovered route. Multicast routing is even more challenging, because a source needs to maintain a route to potentially many group members simultaneously. Providing scalable solutions to this problem typically requires building a hierarchy or an overlay network to reduce the cost of route discovery and maintenance. In this paper, we show that a much simpler alternative is possible, by using source specific semantics and relying on the unicast routing protocol to find all routes. This separation of concerns enables the multicast routing …

Window Queries Over Data Streams, Jin Li

Dissertations and Theses

Evaluating queries over data streams has become an appealing way to support various stream-processing applications. Window queries are commonly used in many stream applications. In a window query, certain query operators, especially blocking operators and stateful operators, appear in their windowed versions. Previous research work in evaluating window queries typically requires ordered streams and this order requirement limits the implementations of window operators and also carries performance penalties. This thesis presents efficient and flexible algorithms for evaluating window queries. We first present a new data model for streams, progressing streams, that separates stream progress from physical-arrival order. Then, we …

The Developmental Mentoring Relationship Between Academic Women, Jane E. Rheineck, Catherine B. Roland

Adultspan Journal

No abstract provided.

Fact Book 2008, Planning, Research, And Policy Analysis

Fact Book (1988-2019)

Fact Book 2008 for Illinois State University

Akhuwat Issue No. 72, Aga Khan University

AKHUWAT Newsletters

• AKU Medical College Celebrates 25 Years
• Quality Awareness and Service Excellence Sessions
• JCIA Dashboard of Clinical and Managerial
• Agreement to Further Health and Education Development in Syria
• Quality Improvement Colloquium 2008
• Face to Face with Dr Rafique H. Keshavjee Head, Academic Planning, FAS - AKU, East Africa
• Tripoli Suq Haraj Restoration Project
• Short Courses Launched at ISMC
• Vibrant and Living African Cultures
• Workshop on Curriculum Development
• Environment Excellence Award
• AKU-IED Marks its 15th Anniversary
• Research Seminar at AKU-IED
• Mentoring Programme for PAF Aviation Technical Instructors
• Senior Citizens: A Concept of Hope
• International Day of Action for Women’s Health
• Strategic Partnerships …

Educating The Forgotten: Non-Formal Education In Urban Kampala, Eleanor Huntington

Independent Study Project (ISP) Collection

During the practicum period, the student researcher interned at MYDEL to gain a better understanding of the challenges and successes of the non-formal education (NFE) sector in urban Kampala, and in particular the Kisenyi neighborhood of Mengo. In the slum areas of Mengo, many children and youth are unable to afford school fees and thus are more susceptible to turn to a street life, which entails the following: extreme poverty, drug and alcohol abuse, a high prevalence of HIV/AIDS, young marriage, early childbirth, rape, or sexual abuse. MYDEL as an organization works to combat this cycle by instructing the children …

Study Of A Self-Assessment System For The Ecotourism Group In Curuçá: Accounting For Tourist Opinions While Maintaining Initial Goals, Karina Hope Costa

Independent Study Project (ISP) Collection

Community-based ecotourism can be a potential tool to both promote empowerment and conservation of the local environment. One of the main goals of community-based ecotourism is to ensure that participating communities take an active role in the development and management of ecotourism activities. One way to measure if their goals are being reached is through a system of assessment, through which an ecotourism community will be able to account for the opinions of the tourist, the guide operators, and the local community. The general objective of this paper is to determine how a community-based ecotourism group can account for the …

Turkish Pre-Service Mathematics Teachers’ Beliefs About Mathematics Teaching., Nihat Boz

Australian Journal of Teacher Education

The purpose of this study was to ascertain the beliefs of mathematics teacher trainees about their chosen profession before they began their service. Specific topics included instructional approaches, the role of the teacher, interaction among students, and interaction between teacher and students during class. Data were collected by use of an open-ended questionnaire administered to 46 pre-service mathematics teachers. Most of the participants in the study held non-traditional beliefs about mathematics teaching. This finding has several implications for teacher education.

Statement, Fall 2008, Office Of Alumni Relations. Morehead State University

Morehead State Alumni Association Publications

Statement magazine of Morehead State University for Fall of 2008.

October 1, 2008 Faculty Senate Minutes, University Of South Carolina

Faculty Senate

No abstract provided.

Recovery From Monocular Deprivation Using Binocular Deprivation: Experimental Observations And Theoretical Analysis, Brian S. Blais, Mikhail Y. Frenkel, Scott R. Kuindersma, Rahmat Muhammad, Harel Z. Shouval, Leon N. Cooper, Mark F. Bear

Science and Technology Department Faculty Journal Articles

Ocular dominance (OD) plasticity is a robust paradigm for examining the functional consequences of synaptic plasticity. Previous experimental and theoretical results have shown that OD plasticity can be accounted for by known synaptic plasticity mechanisms, using the assumption that deprivation by lid suture eliminates spatial structure in the deprived channel. Here we show that in the mouse, recovery from monocular lid suture can be obtained by subsequent binocular lid suture but not by dark rearing. This poses a significant challenge to previous theoretical results. We therefore performed simulations with a natural input environment appropriate for mouse visual cortex. In contrast …

An Exploration Of Tablet-Based Presentation Systems And Learning Styles, Ngan T. Phan

Master's Theses

Learning in the classroom can occur as a combination of students' personal effort to study class material, the instructor's attempt to present class material, and the interaction that takes place between instructor and students. In a more traditional setting, instructors can lecture by writing notes on a chalkboard or a whiteboard. If instructors want to display prepared lecture slides, they can use the overhead projector and write additional notes on top of these overhead transparencies. With many technological advances, various researchers are advocating towards integration between technology and learning. With the advent of tablet PCs, researchers recognize the potential usefulness …

Focus, Kathleen Craven (Editor)

FOCUS on Boise State

No abstract provided.

บุคคลสำคัญด้านสิ่งแวดล้อม

Thai Environment

No abstract provided.

การผลิต ความรับผิดชอบ และโลกร้อนกับอนุกรมมาตรฐานเพื่อความรับผิดชอบต่อสิ่งแวดล้อม, นิอร สุขวัจน์

Thai Environment

No abstract provided.

Grand Valley Magazine, Vol. 8, No. 2 Fall 2008, Grand Valley State University

Grand Valley Magazine

Grand Valley Magazine is a quarterly publication about Grand Valley State University produced by University Communications since 2001.

Comparison Of Species Tree Methods For Reconstructing The Phylogeny Of Bearded Manakins (Aves: Pipridae, Manacus) From Multilocus Sequence Data, Robb T. Brumfield, Liang Liu, David E. Lum, Scott V. Edwards

Faculty Publications

Although the power of multi-locus data in estimating species trees is apparent, it is also clear that the analytical methodologies for doing so are still maturing. For example, of the methods currently available for estimating species trees from multiocus data, the Bayesian method introduced by Liu and Pearl (2007; BEST) is the only one that provides nodal support values. Using gene sequences from five nuclear loci, we explored two analytical methods (deep coalescence and BEST) to reconstruct the species tree of the five primary Manacus OTUs: M. aurantiacus, M. candei, M. vitellinus, populations of M. manacus from west of the …

Utpa Commencement – Fall 2008, University Of Texas-Pan American

Edinburg Archives - Legacy Commencement Programs

No abstract provided.

Effect Of A Water Treatment Bmp On Nutrient Spiraling And Leaf Litter Breakdown In An Urban Stream, Megan Leclair Wheeler

Theses and Dissertations

Alterations to stream conditions caused by urbanization can compromise valuable ecosystem services, such as nutrient attenuation and carbon processing. A best management practice (BMP) water facility was installed to restore an impaired urban stream in Columbus, GA. This study was conducted to determine the effect of this BMP on nutrient spiraling and leaf litter decomposition in a 2 km stretch of Weracoba Creek. I hypothesized the BMP would (1) reduce leaf mass loss over time and (2) interfere with nutrient concentrations and uptake lengths. I characterized leaf litter decomposition using tulip tree leaves {Liriodendron tulipifera) in 1mm mesh bags deployed …

Blac: Revoking Repeatedly Misbehaving Anonymous Users Without Relying On Ttps, Patrick P. Tsang, Man Ho Au, Apu Kapadia, Sean W. Smith

Computer Science Technical Reports

Several credential systems have been proposed in which users can authenticate to service providers anonymously. Since anonymity can give users the license to misbehave, some variants allow the selective deanonymization (or linking) of misbehaving users upon a complaint to a trusted third party (TTP). The ability of the TTP to revoke a user's privacy at any time, however, is too strong a punishment for misbehavior. To limit the scope of deanonymization, systems have been proposed in which users are deanonymized if they authenticate ``too many times,'' such as ``double spending'' with electronic cash. While useful in some applications, it is …

Copula-Based Nonlinear Quantile Autoregression, Xiaohong Chen, Roger Koenker, Zhijie Xiao

Cowles Foundation Discussion Papers

Parametric copulas are shown to be attractive devices for specifying quantile autoregressive models for nonlinear time-series. Estimation of local, quantile-specific copula-based time series models offers some salient advantages over classical global parametric approaches. Consistency and asymptotic normality of the proposed quantile estimators are established under mild conditions, allowing for global misspecification of parametric copulas and marginals, and without assuming any mixing rate condition. These results lead to a general framework for inference and model specification testing of extreme conditional value-at-risk for financial time series data.

New Book Chapter Reviewing Mojave Desert Revegetation Practices Is Forthcoming, Scott R. Abella

Public Policy and Leadership Faculty Research

I was invited to write a chapter for a forthcoming book on Arid Environments to be published by Nova Science Publishers. This book is anticipated to appear in late 2008 or early 2009, and we will be able to provide additional details about the entire book at that time. I co-authored our chapter on revegetation with Alice Newton, Vegetation Manager at Lake Mead National Recreation Area. We systematically reviewed 23 published studies of planting or seeding native species in the Mojave Desert.

Connections Newsletter Fall 2008

Connections Newsletter

No abstract provided.

Inside Unlv, Diane Russell, Shane Bevell, Jennifer Vaughan

Inside UNLV

No abstract provided.

Mojave Applied Ecology Notes Fall 2008, Alice Miller, Joshua Hoines, Scott R. Abella

Mojave Applied Ecology Notes

Effects of wildfires in Joshua Tree National Park, Blackbrush masting volunteer seed collection effort, new book chapter on Mojave revegetation, Natural Areas Association presentations.

Unlv Magazine, Holly Ivy De Vore, Tony Allen, Barbara Cloud, Erin O'Donnell, Matthew K. Jacobsen, Gian Galassi, Michelle Mouton, Afsha Bawany, Shane Bevell

UNLV Magazine

No abstract provided.

Rapid Comparison Of Properties On Protein Surface, Lee Sael, David La, Bin Li, Raif Rustamov, Daisuke Kihara

Faculty Publications

The mapping of physicochemical characteristics onto the surface of a protein provides crucial insights into its function and evolution. This information can be further used in the characterization and identification of similarities within protein surface regions. We propose a novel method which quantitatively compares global and local properties on the protein surface. We have tested the method on comparison of electrostatic potentials and hydrophobicity. The method is based on 3D Zernike descriptors, which provides a compact representation of a given property defined on a protein surface. Compactness and rotational invariance of this descriptor enable fast comparison suitable for database searches. …