Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2006

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 481 - 510 of 11371

Full-Text Articles in Entire DC Network

Calix[4]Arene-Based Synthetic Nanotubes, Voltaire Guanlao Organo Dec 2006

Calix[4]Arene-Based Synthetic Nanotubes, Voltaire Guanlao Organo

Chemistry & Biochemistry Dissertations - Archive

Nanoscale science and technology represents a tremendous opportunity to gain unprecedented insight into the unique phenomena that exists at the nanometer scale, and to use that knowledge to develop materials and devices with novel characteristics. This dissertation explores the unique properties of calix[4]arene-based synthetic nanotubes, the process of filling and characteristics of materials confined in one dimension. Chapter 1 provides an overview of recently developed nanoscale materials, particularly single-walled carbon nanotubes and their ability to encapsulate materials in a one-dimensional configuration. Molecules inside carbon nanotubes are reported to exhibit structural and dynamic properties that are not observed in the bulk. …

Go to article

Managing Agricultural Risk: Examining Information Sources Preferred By Limited Resource Farmers, Ingrid Nya Ngathou, James O. Bukenya, Duncan M. Chembezi Dec 2006

Managing Agricultural Risk: Examining Information Sources Preferred By Limited Resource Farmers, Ingrid Nya Ngathou, James O. Bukenya, Duncan M. Chembezi

Journal of Extension

The study reported here explored limited resource farmers' perceptions of the usefulness of selected sources of risk management information using survey data collected among small and limited resource farmers in north Alabama. The rationale is to understand the information needs of this group of farmers and to customize outreach programs to address their needs. The results suggest that farmers' characteristics are correlated with their perceptions of the sources of information they consider valuable. Another key finding was that sources such as computerized systems and marketing clubs are the less preferred information sources.

Go to article

The Proteomics Of N-Terminal Methionine Cleavage, Frédéric Frottin, Aude Martinez, Philippe Peynot, Sanghamitra Mitra, Richard C. Holz, Carmela Giglione, Thierry Meinnel Dec 2006

The Proteomics Of N-Terminal Methionine Cleavage, Frédéric Frottin, Aude Martinez, Philippe Peynot, Sanghamitra Mitra, Richard C. Holz, Carmela Giglione, Thierry Meinnel

Chemistry Faculty Research and Publications

Methionine aminopeptidase (MAP) is a ubiquitous, essential enzyme involved in protein N-terminal methionine excision. According to the generally accepted cleavage rules for MAP, this enzyme cleaves all proteins with small side chains on the residue in the second position (P1′), but many exceptions are known. The substrate specificity of Escherichia coli MAP1 was studied in vitro with a large (>120) coherent array of peptides mimicking the natural substrates and kinetically analyzed in detail. Peptides with Val or Thr at P1′ were much less efficiently cleaved than those with Ala, Cys, Gly, Pro, or Ser in this position. Certain residues …

Go to article

Vision-Based Target Geo-Location Using A Fixed-Wing Miniature Air Vehicle, D. Blake Barber, Joshua D. Redding, Timothy W. Mclain, Randal W. Beard, Clark N. Taylor Dec 2006

Vision-Based Target Geo-Location Using A Fixed-Wing Miniature Air Vehicle, D. Blake Barber, Joshua D. Redding, Timothy W. Mclain, Randal W. Beard, Clark N. Taylor

Faculty Publications

This paper presents a method for determining the GPS location of a ground-based object when imaged from a fixed-wing miniature air vehicle (MAV). Using the pixel location of the target in an image, with measurements of MAV position and attitude, and camera pose angles, the target is localized in world coordinates. The main contribution of this paper is to present four techniques for reducing the localization error. In particular, we discuss RLS filtering, bias estimation, flight path selection, and wind estimation. The localization method has been implemented and flight tested on BYU’s MAV testbed and experimental results are presented demonstrating …

Go to article

Correlation Of Numerical Ability And Quality Technician Best Performers In Manufacturing Quality Control Applications, Charles Wesley Shelton Dec 2006

Correlation Of Numerical Ability And Quality Technician Best Performers In Manufacturing Quality Control Applications, Charles Wesley Shelton

All-Inclusive List of Electronic Theses and Dissertations

The occupation of Quality Technician has many duties requiring numerical operations. Business and industry place considerable emphasis on numerical ability when evaluating the performance of a Quality Technician. In this study, the numerical ability and performance classification of Quality Technicians were analyzed using a correlation analysis. lll A single case study was used to investigate this relationship. A modified Delphi Method was used to determine characteristics of a Quality Technician. Quality Technicians were evaluated by their direct supervisor and completed a standardized numerical ability test. The evaluations by the supervisor were used to classify each technician based on their performance. …

Go to article

An Analysis Of Waves With Applications To Music, Kristen Creech Dec 2006

An Analysis Of Waves With Applications To Music, Kristen Creech

McNair Scholars Research Journal

No abstract provided.

Go to article

Tectonic Control Of Subsidence And Southward Displacement Of Southeast Louisiana With Respect To Stable North America, Roy K. Dokka, Giovanni F. Sella, Timothy H. Dixon Dec 2006

Tectonic Control Of Subsidence And Southward Displacement Of Southeast Louisiana With Respect To Stable North America, Roy K. Dokka, Giovanni F. Sella, Timothy H. Dixon

School of Geosciences Faculty and Staff Publications

GPS data collected between 1995 and 2006 suggest that southeast Louisiana, including New Orleans and the larger Mississippi Delta, are both subsiding vertically and moving southward with respect to stable North America. Both motions are likely related due to their common tectonic setting. Subsidence in the New Orleans area occurs in part because it is located in the hanging wall of a large listric normal fault system that forms the northern boundary of a 7–10 km thick allochthon that is detached from stable North America. Southward motion of this allochthon relative to stable North America occurs at 2.2 ± 0.6 …

Go to article

Campus Connection, December 2006, Vol. 8 No. 4, California State University, Monterey Bay Dec 2006

Campus Connection, December 2006, Vol. 8 No. 4, California State University, Monterey Bay

Campus Connection

New Provost Will Join Campus In January -- The Library's Beginnings: All Steel And Concrete -- Applying Information Technology To Better The World -- Creativity And Speed Win At Gingerbread House Contest -- Don't Forget The Giving Tree -- Remembering The Good Old Days (The Clown Princes) -- Fort Ord's Past Revisited Through Photos -- How 80 CSUMB Employees 'Walked' Across The U.S. -- New Employees -- Transfers And Promotions -- Probation Passed -- 25 Million Spam Emails Blocked -- See You At The Holiday Party-- Recognizing Employee Service -- Meet Susie Hernandez

Go to article

Barbarians At The Ballot Box: The Use Of Hedging To Acquire Low Cost Corporate Influence And Its Effect On Shareholder Apathy, Jonathan J. Katz Dec 2006

Barbarians At The Ballot Box: The Use Of Hedging To Acquire Low Cost Corporate Influence And Its Effect On Shareholder Apathy, Jonathan J. Katz

Cardozo Law Review

No abstract provided.

Go to article

Ammonium And Ergosterol Production And Chitinolytic Enzyme Activities Of Urban And Rural Isolates Of Two Common Decomposer Fungi, Hai Li Dec 2006

Ammonium And Ergosterol Production And Chitinolytic Enzyme Activities Of Urban And Rural Isolates Of Two Common Decomposer Fungi, Hai Li

All-Inclusive List of Electronic Theses and Dissertations

Increased temperature in urban areas compared to rural areas is known as the urban heat island (UHi) effect. The effects of UHI on ecosystem processes can indicate the potential effects of global warming on processes such as organic matter decomposition and nutrient cycling, etc. It was reported that the urban isolates of two fungal species ( Chrysosporium pannorum and Trichoderma koningii) appeared to have adapted to higher temperatures in urban oak forest compared to rural isolates. Since these fungi decompose chitin, releasing ammonium, the apparent adaptation of these fungi to higher temperatures is probably due to increased chitinolytic enzyme activity …

Go to article

Winter Behavior Of Big Brown Bats (Eptesicus Fuscus) In A Building Roost: Intermittent Feeding, Passive Rewarming, And Energy Conservation, Amy L. Fairbairn Dec 2006

Winter Behavior Of Big Brown Bats (Eptesicus Fuscus) In A Building Roost: Intermittent Feeding, Passive Rewarming, And Energy Conservation, Amy L. Fairbairn

All-Inclusive List of Electronic Theses and Dissertations

I investigated the use of torpor and arousals during winter of 2005 - 2006 by freeliving big brown bats (Eptesicus fuscus) by measuring skin temperature (remotely using data loggers) and used those measurements to estimate winter energy expenditure. Torpor bouts lasted for a mean of 3 .3 days ( d) with a mean of 3 .6 d and 2.2 d for males and females, respectively. There was no correlation between ambient temperature (Ta) during torpor and torpor bout length, but there was a significant correlation between Ta and length of the active period. Arousals lasted on average 5.0 hours (h). …

Go to article

A Comparative Study Of Hybrid And Internet-Based Educational Technology Course Modules, Nilly Adnan Al-Banna Dec 2006

A Comparative Study Of Hybrid And Internet-Based Educational Technology Course Modules, Nilly Adnan Al-Banna

Graduate Theses and Dissertations

The purpose of this study was to examine students’ attitudes and performance toward the teaching methods in an educational technology course. Undergraduate students enrolled in the Educational Technology course ETEC 2002L at the University of Arkansas had been exposed to both on-line modules and in-class instruction. The sample size for this study was 155. The results included 110 valid surveys completed by the students on paper. The data collected from the survey were analyzed using percentages, means, and t test of paired samples to find if there was a significant difference in students’ attitudes toward on-line versus hybrid instruction. Four …

Go to article

Board Of Trustees Minutes, December 1, 2006, Eastern Washington University Dec 2006

Board Of Trustees Minutes, December 1, 2006, Eastern Washington University

Board of Trustees Minutes

No abstract provided.

Go to article

The Impact Of The Internet On Airline Fares: How The Customer Viewed The Transition To Internet Distribution, William J. Brunger Dec 2006

The Impact Of The Internet On Airline Fares: How The Customer Viewed The Transition To Internet Distribution, William J. Brunger

Student Scholarship

Customers who use Internet websites find and buy lower fares than do those who use travel agents for similar trips, even though for most large U.S. airlines the fares and availability offered through both channels are the same (because of contractual obligations). Economic and marketing theory offers "transparency" and "lowered search costs" as primary explanations. In an effort to understand, describe and corroborate those explanations, we studied the behavioral changes implied by the Internet, asking customers how they have understood the transition to Internet travel purchase and how they believe they have changed their behavior, specifically about the impact of …

Go to article

Writing A Thirty Minute Television Script, Mark L. Lauck Dec 2006

Writing A Thirty Minute Television Script, Mark L. Lauck

Creativity and Change Leadership Graduate Student Master's Projects

The goal of the project was to write a twenty two to thirty page script for a television series. The script is the basis to develop a series of thirty to sixty minute television shows. The initial script is centered around the eternal battle between good and evil. It‟s set in an environment where non baptized or lost souls come to rest before moving on to hell or heaven. The place is called Limbo. It‟s neutral ground between Heaven and Hell, where good and evil have equal influence. The only thing keeping the atmosphere from exploding is the Truce, a …

Go to article

Evaluating Next Cell Predictors With Extensive Wi-Fi Mobility Data, Libo Song, David Kotz, Ravi Jain, Xiaoning He Dec 2006

Evaluating Next Cell Predictors With Extensive Wi-Fi Mobility Data, Libo Song, David Kotz, Ravi Jain, Xiaoning He

Dartmouth Scholarship

Location is an important feature for many applications, and wireless networks can better serve their clients by anticipating client mobility. As a result, many location predictors have been proposed in the literature, though few have been evaluated with empirical evidence. This paper reports on the results of the first extensive empirical evaluation of location predictors, using a two-year trace of the mobility patterns of over 6,000 users on Dartmouth's campus-wide Wi-Fi wireless network. The surprising results provide critical evidence for anyone designing or using mobility predictors. \par We implemented and compared the prediction accuracy of several location predictors drawn from …

Go to article

Corruption And Democratic Performance, Levente Littvay Dec 2006

Corruption And Democratic Performance, Levente Littvay

Department of Political Science: Dissertations, Theses, and Student Research

This dissertation introduces new quantitative methods to comparative politics. These include an approximately unbiased missing data treatment, a first order autoregressive multilevel model for the analysis of cross-sectional longitudinal data, approaches for the separation of cross-sectional and longitudinal predictor effects to identify aggregation bias and a model for the empirical analysis of causal direction. Methods are demonstrated on a model replicating past research on the causes of corruption adding democratic performance as a predictor, than a new model of democratic performance is developed to test Warren’s theoretical propositions that corruption is by nature undemocratic, and finally the causal direction between …

Go to article

Editor's Notebook: Super Coach - Superbowl, Michael Kryzanek Dec 2006

Editor's Notebook: Super Coach - Superbowl, Michael Kryzanek

Bridgewater Review

No abstract provided.

Go to article

Nuance And Complexity In Regulatory Takings Law, Gregory M. Stein Dec 2006

Nuance And Complexity In Regulatory Takings Law, Gregory M. Stein

William & Mary Bill of Rights Journal

Presented at the 2004 Brigham-Kanner Property Rights Conference.

Go to article

A Simple Numerical Method Of Cycle Jumps For Cyclically Loaded Structures, D. Cojocaru, Anette M. Karlsson Dec 2006

A Simple Numerical Method Of Cycle Jumps For Cyclically Loaded Structures, D. Cojocaru, Anette M. Karlsson

Mechanical Engineering Faculty Publications

A method for accelerated numerical simulations of structures subjected to cyclic loading is investigated. Of particular interest is a class of structures where the structural properties evolve with time. The proposed method is based on conducting detailed finite element analysis for a set of cycles to establish a trend line, extrapolating the trend line spanning many cycles, and use the extrapolated state as initial state for additional FEA simulations. This includes a control function that automatically monitors the length of the cycle jump to ensure a realistic solution. We compare the proposed method to a reference calculation, where all incremental …

Go to article

Incorporating Electron-Transfer Functionality Into Synthetic Metalloproteins From The Bottom-Up, Jing Hong, Olesya A. Kharenko, Michael Y. Ogawa Dec 2006

Incorporating Electron-Transfer Functionality Into Synthetic Metalloproteins From The Bottom-Up, Jing Hong, Olesya A. Kharenko, Michael Y. Ogawa

Chemistry Faculty Publications

The alpha-helical coiled-coil motif serves as a robust scaffold for incorporating electron-transfer (ET) functionality into synthetic metalloproteins. These structures consist of a supercoiling of two or more R helices that are formed by the self-assembly of individual polypeptide chains whose sequences contain a repeating pattern of hydrophobic and hydrophilic residues. Early work from our group attached abiotic Ru-based redox sites to the most surface-exposed positions of two stranded coiled-coils and used electron-pulse radiolysis to study both intra- and intermolecular ET reactions in these systems. Later work used smaller metallopeptides to investigate the effects of conformational gating within electrostatic peptide-protein complexes. …

Go to article

Original Investigation Correlated Joint Fluctuations Can Influence The Selection Of Steady State Gait Patterns In The Elderly, Max J. Kurz, Nikolaos Stergiou Dec 2006

Original Investigation Correlated Joint Fluctuations Can Influence The Selection Of Steady State Gait Patterns In The Elderly, Max J. Kurz, Nikolaos Stergiou

Journal Articles

This investigation utilized a Markov model to investigate the relationship of correlated lower extremity joint fluctuations and the selection of a steady state gait pattern in the young and elderly. Our model simulated the neuromuscular system by predicting the behavior of the joints for the next gait cycle based on the behavior exhibited in the preceding gait cycles. Such dependencies in the joint fluctuations have been noted previously in the literature. We speculated that compared to the young model, the characteristics of the correlated fluctuations in the elderly model would result in the selection of a different steady state gait …

Go to article

Partitioning Multiple Objective Optimal Solutions With Applications In Radiotherapy Design, Allen G. Holder Dec 2006

Partitioning Multiple Objective Optimal Solutions With Applications In Radiotherapy Design, Allen G. Holder

Mathematics Faculty Research

The optimal partition for linear programming is induced by any strictly complementary solution, and this partition is important because it characterizes the optimal set. However, constructing a strictly complementary solution in the presence of degeneracy was not practical until interior point algorithms became viable alternatives to the simplex algorithm. We develop analogs of the optimal partition for linear programming in the case of multiple objectives and show that these new partitions provide insight into the optimal set (both pareto optimality and lexicographic ordering are considered). Techniques to produce these optimal partitions are provided, and examples from the design of radiotherapy …

Go to article

Oscillation Criteria For First-Order Forced Nonlinear Difference Equations, Ravi P. Agarwal, Said R. Grace, Tim Smith Dec 2006

Oscillation Criteria For First-Order Forced Nonlinear Difference Equations, Ravi P. Agarwal, Said R. Grace, Tim Smith

Publications

Some new criteria for the oscillation of first-order forced nonlinear difference equations are established.

Go to article

Plans As Products Of Learning, Samin Karim, Budhitama Subagdja, Liz Sonenberg Dec 2006

Plans As Products Of Learning, Samin Karim, Budhitama Subagdja, Liz Sonenberg

Research Collection School Of Computing and Information Systems

This paper presents motivations and current related work in the field of plan learning. Additionally, two approaches that achieve plan learning are presented. The two presented approaches are centred on the BDI framework of agency and have particular focus on plans, which, alongside goals, are the means to fulfil intentions in most pragmatic and theoretical realisations of the BDI framework. The first approach is a hybrid architecture that combines a BDI plan extractor and executor with a generic low-level learner. The second approach uses hypotheses to suggest incremental refinements of a priori plans. Both approaches achieve plan generation that is …

Go to article

Bridgewater Review, Vol. 25, No. 2, December 2006 Dec 2006

Bridgewater Review, Vol. 25, No. 2, December 2006

Bridgewater Review

No abstract provided.

Go to article

Belief: An Essay In Understanding, Shubha Ghosh Dec 2006

Belief: An Essay In Understanding, Shubha Ghosh

Buffalo Law Review

No abstract provided.

Go to article

Speech In, For, And By (?) The "Multiversity": Reflections Of A Recovering President, William R. Greiner Dec 2006

Speech In, For, And By (?) The "Multiversity": Reflections Of A Recovering President, William R. Greiner

Buffalo Law Review

No abstract provided.

Go to article

2006-12-01 Minutes & Appendices, Longwood University Dec 2006

2006-12-01 Minutes & Appendices, Longwood University

Board of Visitors Meeting Minutes 1964-

No abstract provided.

Go to article

Funding Michigan K-12 Educational Adequacy Without Rewarding Inefficiency, James J. Walters Dec 2006

Funding Michigan K-12 Educational Adequacy Without Rewarding Inefficiency, James J. Walters

Dissertations

Resource equalization represents the historical and theoretical basis for American school finance and its ideals continue to dominate discussion and practice. During the last decade and a half, the national aspiration for equitable distribution of school finance resources has started a transformation into a derivative notion of adequacy. This equity policy derivative embraces the idea of sufficiency, which in turn implies a standard. The concept of educational adequacy has grown to mean the achievement of high absolute standards. Equity (equalization) theorists measure resource level on a relative basis; each student relative to all others. Adequacy adherents measure student achievement against …

Go to article

First Prev Next Last