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

Digital Commons Network™

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

2008

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 23731 - 23760 of 25228

Full-Text Articles in Entire DC Network

Osgoode Syllabus Of Courses And Seminars: 2008 - 2009, Office Of Student Services Jan 2008

Osgoode Syllabus Of Courses And Seminars: 2008 - 2009, Office Of Student Services

Syllabi

No abstract provided.

Go to article

Electrocatalytic Oxidation Of Hydroxylamine At A Quinizarine Modified Glassy Carbon Electrode: Application To Differential Pulse Voltammetry Detection Of Hydroxylamine, Mohammad Mazloumardakani, Payam Ebrahimi Karami, Hossein Naeimi, Bibifatemeh Mirjalili Jan 2008

Electrocatalytic Oxidation Of Hydroxylamine At A Quinizarine Modified Glassy Carbon Electrode: Application To Differential Pulse Voltammetry Detection Of Hydroxylamine, Mohammad Mazloumardakani, Payam Ebrahimi Karami, Hossein Naeimi, Bibifatemeh Mirjalili

Turkish Journal of Chemistry

The electrocatalytic behavior of hydroxylamine was studied on a glassy carbon electrode modified by electrodeposition of quinizarine, using cyclic voltammetry, chronoamperometry, and rotating disk voltammetry as diagnostic techniques. Cyclic voltammetry showed that the catalytic current of the system depends on the concentration of hydroxylamine. The magnitude of the peak current for quinizarine increased sharply in the presence of hydroxylamine and proportional to hydroxylamine concentration. The diffusion coefficient of hydroxylamine and the catalytic rate constant for the catalytic reaction of quinizarine with hydroxylamine were also estimated using a rotating disk electrode experiment. The kinetics parameters of this process were calculated, and …

Go to article

Preparation And Potentiometric Study Of Promethazine Hydrochloride Selective Electrodes And Their Use In Determining Some Drugs, Nabil S. Nassory, Shahbaz A. Maki, Bashaer A. Al-Phalahy Jan 2008

Preparation And Potentiometric Study Of Promethazine Hydrochloride Selective Electrodes And Their Use In Determining Some Drugs, Nabil S. Nassory, Shahbaz A. Maki, Bashaer A. Al-Phalahy

Turkish Journal of Chemistry

Promethazine hydrochloride selective electrodes were constructed based on promethazine-phosphotun- gstic acid ion pair in PVC matrix membrane. The plasticizers used were di-butyl phosphate (DBP), tri-n-butyl phosphate (TBP), o-nitro phenyl octyl ether (ONPOE), and di-n-butyl phthalate (DBPH). The electrodes based on DBP, TBP, and ONPOE gave the same linear range between 1 x 10^{-4} and 1 x 10^{-1} M, while the one based on DBPH ranged between 5 x 10^{-4} and 1 x 10^{-1}M. The slopes for linear range ranged from 40 to 56 mV/decade with correlation coefficients lying between 0.9984 and 0.9993. The best detection limit was 2 x 10^{-5}M …

Go to article

Physics-Based Table-Top Mixed Reality Games, Qingqing Dong, Zhongyi Sun, Brian Mac Namee Jan 2008

Physics-Based Table-Top Mixed Reality Games, Qingqing Dong, Zhongyi Sun, Brian Mac Namee

Conference papers

Mixed reality applications use techniques from computer vision, augmented reality and virtual reality to allow real and virtual objects interact physically together on a user’s computer screen. This paper will describe two mixed reality applications which allow the user to play games that appear to take place on top of their physical desk. The games described are a desktop racing game and a desktop based game of ten pin bowling. In the desktop racing game virtual cars, controlled by the user, interact with both virtual objects (such as trees, walls and lampposts) and real ones (such as ramps and blocks). …

Go to article

Hydrogenation Of Citral Over Ni And Ni-Sn Catalysts, Hi̇lal Aykaç, Selahatti̇n Yilmaz Jan 2008

Hydrogenation Of Citral Over Ni And Ni-Sn Catalysts, Hi̇lal Aykaç, Selahatti̇n Yilmaz

Turkish Journal of Chemistry

Liquid phase citral hydrogenation over zeolite-supported monometallic Ni and bimetallic Ni-Sn catalysts was studied. The zeolite support materials were Na-Y, Na-mordenite, and clinoptilolite. Ni and Sn contents of the monometallic and bimetallic catalysts were 8.1-9.2 wt% and 0.46 wt%, respectively. The type of the zeolite support affected the activity and selectivity of the catalysts differently. The main product of the citral hydrogenation reaction was citronellal, for both monometallic (84.5% yield) and bimetallic (44.5% yield) catalysts. The addition of promoter increased the selectivity to unsaturated alcohols (geraniol+nerol), i.e. it changed from 0.9% to 6.3% over mordenite and from 0.9% to 2.1% …

Go to article

Establishing Universal Screening Risk Indicators Using Reading Curriculum-Based Measurement And The Developmental Reading Assessment, Adrienne M. Zonneville Jan 2008

Establishing Universal Screening Risk Indicators Using Reading Curriculum-Based Measurement And The Developmental Reading Assessment, Adrienne M. Zonneville

Theses

The current study examined the abilities of Dynamic Indicator of Basic Early Literacy Skills Oral Reading Fluency (DORF) and the Developmental Reading Assessment (DRA) to be used as screening measures for predicting performance on the yearly state reading assessment in New York. Data from 194 students’ performance on DORF, DRA, and the English Language Arts (ELA) assessment were examined from an existing data base. Participants’ scores on the DORF and the DRA in third grade were compared to their performance on the fourth grade ELA. Screening cut scores were developed for each benchmarking period to assist in identifying students who …

Go to article

Experimental Investigation On The Effects Of Surface Roughness On Microscale Liquid Flow, Tim Brackbill Jan 2008

Experimental Investigation On The Effects Of Surface Roughness On Microscale Liquid Flow, Tim Brackbill

Theses

Microfluidics has become of interest recently with shrinking device sizes. Roughness structures left from machining processes on the inside of tubes and channels that were once not a concern may now create relative roughness that exceeds 5%. Confusion still exists in the literature as to the extent of the effects of roughness on laminar flow. This work aims to experimentally examine the effects of different roughness structures on internal flows in high aspect ratio rectangular microchannels. A total of four test sections were fabricated to test samples with different patterned rough surfaces, and to also vary the two opposite surfaces …

Go to article

Ship Ballast Tanks: How Microbes Travel The World, Fred C. Dobbs Jan 2008

Ship Ballast Tanks: How Microbes Travel The World, Fred C. Dobbs

OES Faculty Publications

As the international shipping fleet travels the oceans, it carries with it hidden cargoes of microbes. Fred C. Dobbs explores the hazards posed and what can be done to counteract them.

Go to article

Forcing And Dynamics Of Seafloor-Water Column Exchange On A Broad Continental Shelf, William B. Savidge, Ann Gargett, Richard A. Jahnke, James R. Nelson, Dana K. Savidge, R. Timothy Short, George Voulgaris Jan 2008

Forcing And Dynamics Of Seafloor-Water Column Exchange On A Broad Continental Shelf, William B. Savidge, Ann Gargett, Richard A. Jahnke, James R. Nelson, Dana K. Savidge, R. Timothy Short, George Voulgaris

OES Faculty Publications

Relict sediments of elevated permeability characterize the majority of continental shelves globally (Emery, 1968). In these settings, interactions between benthic boundary layer (BBL) flows and seabed topography generate pressure fluctuations that drive advective and dispersive porewater transport, dramatically increasing the magnitude and variability of porewater solute and particulate exchange across the sediment-water interface (Huettel et al., 1996; Huettel and Rusch, 2000). On broad shallow shelves with a relatively large area-to-volume ratio, the seafloor’s role is magnified. Energetic events may reorganize bedforms across a significant fraction of the shelf, leading to altered exchange dynamics that may persist long after the organizing …

Go to article

Arctic Perennial Ice Cover Over The Last 14 Million Years, Dennis A. Darby Jan 2008

Arctic Perennial Ice Cover Over The Last 14 Million Years, Dennis A. Darby

OES Faculty Publications

Knowledge of the long-term history of the perennial ice is an important issue that has eluded study because the Cenozoic core material needed has been unavailable until the recent Arctic Coring Expedition (ACEX). Detrital Fe oxide mineral grains analyzed by microprobe from the last 14 Ma (164 m) of the ACEX composite core on the Lomonosov Ridge were matched to circum-Arctic sources with the same mineral and 12-element composition. These precise source determinations and estimates of drift rates were used to determine that these sand grains could not be rafted to the ACEX core site in less than a year. …

Go to article

Weee And Rohs: Are They Spurring Innovation Among Small And Medium Sized Electronics Businesses In The U.S.?, Frances L. Cabrera Jan 2008

Weee And Rohs: Are They Spurring Innovation Among Small And Medium Sized Electronics Businesses In The U.S.?, Frances L. Cabrera

Theses

Eight small businesses in the electronics industry from Rochester, NY were studied in order to determine whether the European Union’s directives, Waste Electrical and Electronic Equipment (WEEE) and Restriction of Hazardous Substances Directives (RoHS) are spurring innovation in the US. Innovation was defined as any change in the design and manufacturing of the products, in the internal organizational structure and management of the business, or in the market strategies pursued by the small businesses that created a benefit beyond RoHS and WEEE compliance. Because WEEE and RoHS are based upon extended producer responsibility principles, this innovation would complement the findings …

Go to article

From Reform To Reduction: Reports On The Management Of Navy And Department Of Defense Laboratories In The Post-Cold War Era, J. Eric Hazell Jan 2008

From Reform To Reduction: Reports On The Management Of Navy And Department Of Defense Laboratories In The Post-Cold War Era, J. Eric Hazell

Books

This book reviews approximately 65 of the significant reports issued on Department of Defense (DOD) and Department of the Navy (DON) management of research, development, test, and evaluation (RDT&E) from the end of the Cold War through the late 1990s. It is designed for two primary audiences: (1) DOD, congressional, and other government staff who need an accessible overview and quick reference and bibliographic guide to issues during that period; and (2) researchers and historians, especially those interested in available sources. The book is organized both chronologically and thematically, and engages some of the principal arguments, regarding management of defense …

Go to article

Interactions Between Changing Pco2, N2 Fixation, And Fe Limitation In The Marine Unicellular Cyanobacterium Crocosphaera, Fei-Xue Fu, Margaret R. Mulholland, Nathan S. Garcia, Aaron Beck, Mark E. Warner, Sergio A. Sañudo, David A. Hutchins Jan 2008

Interactions Between Changing Pco2, N2 Fixation, And Fe Limitation In The Marine Unicellular Cyanobacterium Crocosphaera, Fei-Xue Fu, Margaret R. Mulholland, Nathan S. Garcia, Aaron Beck, Mark E. Warner, Sergio A. Sañudo, David A. Hutchins

OES Faculty Publications

We examined the physiological responses of steady-state iron (Fe)-replete and Fe-limited cultures of the biogeochemically critical marine unicellular diazotrophic cyanobacterium Crocosphaera at glacial (19 Pa; 190 ppm), current (39 Pa; 380 ppm), and projected year 2100 (76 Pa; 750 ppm) CO2 levels. Rates of N2 and CO2 fixation and growth increased in step with increasing partial pressure of CO2 (pCO2), but only under Fe- replete conditions. N2) and carbon fixation rates at 75 Pa CO2 were 1.4-1.8-fold and 1.2-2.0-fold higher, respectively, relative to those at present day and glacial pCO2 …

Go to article

Chemistry, Hiroki Sato Jan 2008

Chemistry, Hiroki Sato

Theses

Chemistry by Hiroki Sato, M.F.A Thesis, Rochester Institute of Technology, 2008 A description of the creation of a 3D computer animated film, "Chemistry," a project whose goal is to invoke an emotional response in the audience as they watch a reaction between a crystal and a light bulb in a laboratory. Includes thesis proposal, budget, timeline, original story boards, color stills, and a code for a Maya Python tool that helps to create and animate some complex geometrical objects.

Go to article

Food Limitation In Larval Fish: Ontogenetic Variation In Feeding Scope And Its Potential Effect On Survival, Alexander B. Bochdansky, Peter Grønkjær, Pierre Pepin, William C. Leggett Jan 2008

Food Limitation In Larval Fish: Ontogenetic Variation In Feeding Scope And Its Potential Effect On Survival, Alexander B. Bochdansky, Peter Grønkjær, Pierre Pepin, William C. Leggett

OES Faculty Publications

We used the radiated shanny Ulvaria subbifurcataas a model species to explore the relative gut fullness from hatch to metamorphosis of wild larvae, and compared these values with those of laboratory-reared larvae fed at maximum rates. Ingestion rates of most wild larvae were above starvation levels but below the maximum feeding levels of laboratory-reared larvae. Twenty-six percent of freshly-hatched wild larvae and 11% of large, pre-settlement wild larvae had insufficient food in their stomach to satisfy metabolic requirements. These results, taken on their own, are consistent with the much hypothesized increased foraging performance and survival of larger larvae relative …

Go to article

Experimental Investigation Of The Qu Tube Heat Pipe, Sean F. Entrekin Jan 2008

Experimental Investigation Of The Qu Tube Heat Pipe, Sean F. Entrekin

Theses

No abstract provided.

Go to article

Experimental And Analytical Development Program Of The Sequential Feed System, Christopher Morton Jan 2008

Experimental And Analytical Development Program Of The Sequential Feed System, Christopher Morton

Theses

No abstract provided.

Go to article

Actively Engaging Pre-Service Teachers In Geometry And Measurement, Kadian M. Callahan Jan 2008

Actively Engaging Pre-Service Teachers In Geometry And Measurement, Kadian M. Callahan

Proceedings of the Annual Meeting of the Georgia Association of Mathematics Teacher Educators

Current work in mathematics education suggests that the learning experiences in which teachers engage during undergraduate study influences their knowledge of and beliefs about mathematics and the ways in which they will teach (Allen, et. al., 2008; CBMS, 2001; Hill, Rowan, & Ball, 2005; National Research Council, 2001). However, very little is known about pre-service teachers’ learning experiences and how those experiences influence their thinking about mathematics teaching and learning. The classroom excerpt described here attempts to illuminate how pre-service, elementary teachers’ active engagement in the learning of geometry and measurement influences their mathematical power: a positive disposition toward mathematics, …

Go to article

Multi-Echelon Repairable Item Inventory System With Limited Repair Capacity Under Nonstationary Demands, Hoong Chuin Lau, Huawei Song Jan 2008

Multi-Echelon Repairable Item Inventory System With Limited Repair Capacity Under Nonstationary Demands, Hoong Chuin Lau, Huawei Song

Research Collection School Of Computing and Information Systems

Classical multi-echelon repairable item inventory models are based either on steady-state analysis or infinite repair capacity, which may not work well in situations when the demand is nonstationary, or repair capacity is limited. In this paper, we propose an analytical model for evaluating system performance that works well under limited repair capacity and nonstationary demands. Following the METRIC methodology, we then develop an optimisation algorithm to solve the corrective maintenance problem in military logistics. Experimental results show that our approach yields good solutions efficiently. This work has also resulted in a software that has been field-tested by a military organisation.

Go to article

Collective Outsourcing To Market (Com): A Market-Based Framework For Information Supply Chain Outsourcing, Fang Fang, Zhiling Guo, Andrew B. Whinston Jan 2008

Collective Outsourcing To Market (Com): A Market-Based Framework For Information Supply Chain Outsourcing, Fang Fang, Zhiling Guo, Andrew B. Whinston

Research Collection School Of Computing and Information Systems

This paper discusses the importance of and a solution to separating the information flow from the physical product flow in a supply chain. Motivated by the inefficient demand forecast caused by information asymmetry and lack of an incentive among supply chain partners to share valuable information, we propose a radically new framework called collective outsourcing to market (COM) to address many information supply chain design challenges. To validate the COM framework, we consider a supply chain with one manufacturer and multiple downstream retailers. Retailers privately acquire demand forecast information that they do not have incentive to share horizontally with other …

Go to article

Enhancing Recursive Supervised Learning Using Clustering And Combinatorial Optimization (Rsl-Cc), Kiruthika Ramanathan, Sheng Uei Guan Jan 2008

Enhancing Recursive Supervised Learning Using Clustering And Combinatorial Optimization (Rsl-Cc), Kiruthika Ramanathan, Sheng Uei Guan

Research Collection School Of Computing and Information Systems

The use of a team of weak learners to learn a dataset has been shown better than the use of one single strong learner. In fact, the idea is so successful that boosting, an algorithm combining several weak learners for supervised learning, has been considered to be one of the best off-the-shelf classifiers. However, some problems still remain, including determining the optimal number of weak learners and the overfitting of data. In an earlier work, we developed the RPHP algorithm which solves both these problems by using a combination of genetic algorithm, weak learner and pattern distributor. In this paper, …

Go to article

Do Sages Have Emotions?, Alan Kam Leung Chan Jan 2008

Do Sages Have Emotions?, Alan Kam Leung Chan

Research Collection College of Integrative Studies

Contemporary discussions of Confucian philosophy may tend to privilege certain key ethical concepts such as “benevolence“ (ren 仁) and “filial piety” (xiao 孝), but in traditional China much of the Confucian hermeneutical and philosophical enterprise revolved around the figure of the ideal “sage” (shengren 聖 人 ). Virtues are neither abstract nor self-existing; they are seen to cohere and find profound expression in the being of the sage. In this context, “sagehood“ thus emerges as a critical concern in Confucian self-understanding. Can sagehood be attained? Can the “average person” (zhongren 中人), indeed, become like Confucius, the sage par excellence, who …

Go to article

The Framing And Evaluation Of Multiple Hypotheses, Theodore J. Mock, Arnold Wright, Rajendra P. Srivastava, Hai Lu Jan 2008

The Framing And Evaluation Of Multiple Hypotheses, Theodore J. Mock, Arnold Wright, Rajendra P. Srivastava, Hai Lu

Research Collection School Of Accountancy

This study provides exploratory evidence on auditors’ framing and evaluation of hypotheses, identifies implications for improving audit decision-making and facilitates the interpretation of prior research. Prior studies usually assume hypotheses to be framed as mutually exclusive and exhaustive. However, both verbal protocol evidence and probability assessments reveal that in a realistic case most auditors frame the hypotheses as a non-mutually exclusive and exhaustive set of causes. Further, auditor probability assessments tend to reflect multiple causes. Finally, exploratory analyses indicate auditors have difficulty in updating assessments consistent with the perceived interrelationships between hypotheses.

Go to article

Implications Of Transaction Costs For The Post-Earnings-Announcement Drift, Jeffrey Ng, Rodrigo Verdi, Tjomme Rusticus Jan 2008

Implications Of Transaction Costs For The Post-Earnings-Announcement Drift, Jeffrey Ng, Rodrigo Verdi, Tjomme Rusticus

Research Collection School Of Accountancy

This paper examines the effect of transaction costs on the post–earnings announcement drift (PEAD). Using standard market microstructure features we show that transaction costs constrain the informed trades that are necessary to incorporate earnings information into price. This implies weaker return responses at the time of the earnings announcement and higher subsequent returns drift for firms with higher transaction costs. Consistent with this prediction, we find that earnings response coefficients are lower for firms with higher transaction costs. Using portfolio analyses, we find that the profits of implementing the PEAD trading strategy are significantly reduced by transaction costs. In addition, …

Go to article

Factors Affecting The Information Quality Of Personal Web Portfolios, P. Katerattanakul, Keng Siau Jan 2008

Factors Affecting The Information Quality Of Personal Web Portfolios, P. Katerattanakul, Keng Siau

Research Collection School Of Computing and Information Systems

Personal Web portfolios have become a popular information source and an effective method for individuals to present themselves to others in cyberspace. Thus, the quality of personal Web portfolios is critical and affects the perception that others have of the individuals. But how do we measure quality of personal Web portfolios? What are the important factors affecting quality of personal Web portfolios? This study presents the development of an instrument measuring factors affecting information quality of personal Web portfolios. The proposed instrument, based on the Information Quality framework, was refined and validated to assess its construct validity, convergent validity, and …

Go to article

White Cartels, The Civil Rights Act Of 1866, And The History Of Jones V. Alfred H. Mayer Co., Darrell A. H. Miller Jan 2008

White Cartels, The Civil Rights Act Of 1866, And The History Of Jones V. Alfred H. Mayer Co., Darrell A. H. Miller

Faculty Scholarship

In 2008, Jones v. Alfred H. Mayer Co. turned forty. In Jones, the U.S. Supreme Court held for the first time that Congress can use its enforcement power under the Thirteenth Amendment, which abolished slavery, to prohibit private racial discrimination in the sale of property. Jones temporarily awoke the Thirteenth Amendment and its enforcement legislation--the Civil Rights Act of 1866--from a century-long slumber. Moreover, it recognized an economic reality: racial discrimination by private actors can be as debilitating as racial discrimination by public actors. In doing so, Jones veered away from three decades of civil rights doctrine--a doctrine that had …

Go to article

Introducing A ‘Different Lives’ Approach To The Valuation Of Health And Well-Being, Matthew D. Adler, Paul Dolan Jan 2008

Introducing A ‘Different Lives’ Approach To The Valuation Of Health And Well-Being, Matthew D. Adler, Paul Dolan

Faculty Scholarship

We introduce a new "different lives" survey format, which asks respondents to rank hypothetical lives described in terms of longevity, health, happiness, income, and other elements of the quality of life. In this short paper, we show that the format is of policy relevance whether a mental state, preference satisfaction or extra-welfarist account of well-being is adopted and discuss some of the advantages the format has over standard formats, such as contingent valuation surveys and QALY-type methods. An exploratory survey indicates that the format is feasible and that health and happiness might be more important than income and life expectancy.

Go to article

A Comparison Of The Effects Of Psychopathic Personality Features, Context And Incentives On Individuals' Beliefs They Would Malinger, Thomas Earl Rae Jan 2008

A Comparison Of The Effects Of Psychopathic Personality Features, Context And Incentives On Individuals' Beliefs They Would Malinger, Thomas Earl Rae

All-Inclusive List of Electronic Theses and Dissertations

Accuracy in psychological evaluation and diagnosis relies heavily on the self-report of those being assessed. Consequently, the person who feigns or exaggerates cognitive, physical or psychological impairment, known as malingering, can present significant challenges in such situations. Research on malingering has focused primarily on improving detection of the behavior, resulting in the development of a number of effective assessment measures. However, much less research attention has been paid to increasing our understanding of the primary motivations underlying attempts to feign. As such, our understanding of why people malinger and what factors most strongly influence their decisions is quite limited. In …

Go to article

An Investigation Of The Reliability And Validity Of The Caperton Forgiveness Styles Inventory, Duane Caperton Jan 2008

An Investigation Of The Reliability And Validity Of The Caperton Forgiveness Styles Inventory, Duane Caperton

All-Inclusive List of Electronic Theses and Dissertations

This research was an investigation into the process of forgiveness. The analysis of qualitative interviews with nearly 100 participants suggested four different approaches, or styles, of forgiving and non-forgiving. The Intrapersonal style describes people who forgive other people by focusing on their own thoughts, feelings, and actions. The Interpersonal style describes people who forgive other people by focusing on the thoughts, feelings, and actions of the offending persons. The Easy Going style describes the people who never forgive anyone because they rarely or never feel offended and consequently rarely or never feel the need to forgive others. The Grudge Holder …

Go to article

Attitudes Of Indiana Specialeducation Teachers Towards The Use And Implementation Of Assistive Technology, Bruce H. Guggenberger Jan 2008

Attitudes Of Indiana Specialeducation Teachers Towards The Use And Implementation Of Assistive Technology, Bruce H. Guggenberger

All-Inclusive List of Electronic Theses and Dissertations

This study examines the attitudes of specialEducation towards the use and implementation of Assistive Technology (AT). The study attempts to determine a relationship between the attitudes of teachers and the presence of an Assistive Technology Coordinator/Committee, whether the school is part of the Individualized Classroom Accountability Network (ICAN) project, the type of disability, and grade level of the student. The study was influenced by Everett Rogers's Diffusion of Innovation theory. The mixed-method research was conducted using specialEducation teachers within the State of Indiana. A sample of 164 specialEducation teachers responded to the quantitative survey. Each subject completed a 28 question …

Go to article

First Prev Next Last