Digital Commons Network^™

Interval Estimation Of Excess Risk Related Effective Doses In Tobit Models, Jia Wang

All Theses and Dissertations (ETDs)

No abstract provided.

A Quest For Meaning In Spontaneous Brain Activity - From Fmri To Electrophysiology To Complexity Science, Biyu He

All Theses and Dissertations (ETDs)

The brain is not a silent, complex input/output system waiting to be driven by external stimuli; instead, it is a closed, self-referential system operating on its own with sensory information modulating rather than determining its activity. Ongoing spontaneous brain activity costs the majority of the brain's energy budget, maintains the brain's functional architecture, and makes predictions about the environment and the future. I have completed three separate studies on the functional significance and the organization of spontaneous brain activity. The first study showed that strokes disrupt large-scale network coherence in the spontaneous functional magnetic resonance imaging: fMRI) signals, and that …

A Model Of Responses To Race-Based And Gender-Based Stereotype Threat In Computer Science, Lara Tedrow

Psychology Theses & Dissertations

The perception of stereotype threat among computer science students was examined at two universities. A model of stereotype threat was developed and tested among students enrolled in three undergraduate computer science courses at two universities. The goal of this model was to provide an understanding of the underlying mechanisms through which stereotype threat works.

The study tested relationships among the following variables: race-based stereotype threat, gender-based stereotype threat, goal orientation, CS self-efficacy, active coping, behavioral disengagement, effort, and performance. Structural equation modeling was used to test the measurement model and a series of nested structural models. Findings supported the proposed …

Biogenic Tracers Through The Holocene On The Alaskan Shelf, Carie A. Curry

OES Theses and Dissertations

Dramatic environmental changes in the Arctic Ocean have been observed for the last two decades including changing the amount of sea ice thickness and extent, and increased river discharge. In order to put these and other current day observations into historical context and perhaps reveal mechanisms controlling them, a suite of paleo-proxies were used to analyze two high resolution cores collected on the 2005 HOTRAX expedition. The goals of this research were: (1) develop an analytical method for determining biogenic calcite, (2) identify the major sources of biogenic matter into the system over the Holocene, and (3) assemble the history …

Comparative Study Of Forward And Diffusely Scattered Light In A Coherently Prepared Ultracold Rubidium Gas, Rocio Gisel Olave Gonzalez

Physics Theses & Dissertations

A comparison between forward and diffusely scattered light propagating in a coherently prepared ultracold ⁸⁷Rb atomic vapor is presented. This research is part of the ongoing effort to characterize the processes, such as diffusion, that contribute to coherence loss in atomic media under conditions of electromagnetically induced transparency, for applications in realistic systems. Toward this end, a magneto optical trap (MOT) of ⁸⁷Rb has been built, and the atomic vapor sample characterized in terms of atomic density, shape and size, temperature, and optical depth. Next, two co-propagating beams were sent through the sample, to establish an electromagnetically induced …

Transformation Paradox: A Framework For The Analysis Of Politics In Enterprise Transformations, Cindy S. Miller

Engineering Management & Systems Engineering Theses & Dissertations

The purpose of this research is to develop a theoretical framework for the analysis of politics in enterprise transformations using a dialectical analysis approach (Hegel, 1989; Heraclitus, 1979; Pinkard, 1988; Skinner, 1978a, 1978b) and conduct an evaluation of the framework validity. The framework is constructed using a dialectical analysis of concepts stemming from the work of Alford and Friedland (1992) and considers four theoretical perspectives: autocratic, bureaucratic, pluralistic, and cognitive. The framework is then validated by means of qualitative metrics and adherence to critical ideology.

This research addresses the problem that there is no holistic theoretical framework for the analysis …

Que Ondee Sola - January-February 2009, Xavier Luis Burgos

Que Ondee Sola

Student publication founded in 1972, articles include: Dominga Cruz Nationalist Leader, Rafael Hernandez Musician, Cortijo's Revenge: Race & Politics in Puerto Rico, Jose 'Chegui' Torres Boxing Champion, Jose Campeche Painter, Bomba: The History & Rhythyms of the Music, Loiza Aldea: The African Capital of Puerto Rico, History of the Maroon Societies, Luis Pales Matos Poet, NEIU Student Profile

A Protocol For Occupational Therapy Involvement In The Response To Intervention Model, Nicole Bolinger

Occupational Therapy Capstones

In order to provide effective occupational therapy services to children within the school-based practice setting, it is important to be knowledgeable regarding the current theories and educational models which drive the educational system. Also, it is imperative that school-based occupational therapy practitioners understand the educational models and how they may impact the way occupational therapists deliver services. Chandler (2007) states, "an initiative is gathering momentum that has the potential to significantly change the way occupational therapists practice in the public school" (p. 7). Occupational therapy may have an opportunity to expand their services through a model called Response to Intervention. …

History At The University Of North Dakota: 1885-1970, William Caraher

UND Departmental Histories

This departmental history was written on the occasion of the UND Quasquicentennial in 2008.

Interference Effects Due To Projective-Target Nucleus Scattering In Single Ionization Of Molecular Hydrogen By 75 Kev Proton Impact, Jason S. Alexander

Doctoral Dissertations

"Doubly-differential cross-sections for the single ionization of molecular hydrogen by 75 keV proton impact have been measured as a function of the projectile scattering angle and energy loss and compared to available theoretical models. Interference structures are directly observed in the scattering angular dependence of the DDCS. The phase angle appears to be most sensitive to the projectile angle but not as sensitive to the electron energy, suggesting that the projectile - target nucleus interaction plays a central role in the interference. The large-angle structures disappear at electron speeds near the projectile speed. This may be due to a focusing …

Wind Power Applications To Groundwater Remediation, Ronald E. Gallagher

Doctoral Dissertations

"The use of renewable energy systems to power groundwater remediation systems seems like an inherently good idea because of potential cost savings and environmental benefits associated with reduced greenhouse gas emissions. Small wind turbine systems marketed for single residence applications may be the appropriate size for remediation systems, and such wind turbines are readily available at reasonable cost. Another benefit of using domestic wind turbine systems is that they are straightforward to install and operate with minimal training. One of the major drawbacks associated with using wind turbines at remediation sites is that site-specific wind velocity data is typically used …

Holomorphic Extensions In Toric Varieties, Malgorzata Aneta Marciniak

Doctoral Dissertations

"The dissertation describes the Hartogs and the Hartogs-Bochner extension phenomena in smooth toric varieties and their connection with the first cohomology group with compact support and sheaf coefficients. The affirmative and negative results are proved for toric surfaces and for line bundles over toric varieties using topological, analytic, and algebraic methods"--Abstract, page iii.

Decision Aids For Addressing The Validity-Adverse Impact Trade-Off, Paul R. Sackett, Wilfried De Corte, Filip Lievens

Research Collection Lee Kong Chian School Of Business

Typically, adverse impact (AI) is an after-the-fact analysis: Once predictor scores for a pool of applicants are available, AI is evaluated. Sometimes the analysis is made in real time, as predictor scores are obtained on a set of applicants, and AI calculations are done on a “what if” basis as input to decisions about features such as where to set a cutoff score. The focus of this chapter, however, is on attempts to estimate in advance the likely impact of a given selection system. Here, estimates are made based on available information about the features such as the expected magnitude …

Chaos And Uncertainty, M. Thulasidas

Research Collection School Of Computing and Information Systems

The end of 2008 in the finance industry can be summarized in two words – chaos and uncertainty. The subprime crisis, where everybody lost; the dizzying commodity price movements; the pink slip syndrome; the spectacular bank busts; and the gargantuan bail-outs all vouch for it.

(2009) Caring For The “Self As One Among Others”, Laurance J. Splitter

Collected Papers of Laurance J. Splitter

n this paper, I explore some underpinnings of the community of inquiry (CoI), viewed as the primary mode of classroom organization in Philosophy for Children but also as a pedagogic, personal and inter-personal framework for teaching and learning in any subject area. I will argue that the CoI provides a model of both personal and intellectual development which exemplifies how classroom teaching and learning may be seen both as forms of care and of self-care.

Will Directed Evolution Destroy Humanity, And If So, What Can We Do About It?, Maxwell J. Mehlman

Faculty Publications

In contemplating the technologies emerging from the Human Genome Project, nothing scares people more than the prospect that we will attempt to use genetic engineering to control the human evolutionary process.

Ltc Newsletter, University Of Dayton. Ryan C. Harris Learning Teaching Center

LTC Newsletter

Spring 2009

Biology In Mathematics At The University Of Richmond, Lester Caudill

Department of Math & Statistics Faculty Publications

In an effort to meet the needs of science students for modeling skills, three new courses have been created at the University of Richmond: Scientific Calculus I and II, and Mathematical Models in Biology and Medicine. The courses are described, and lessons learned and future directions are discussed.

Effects Of Quantum Mechanics On The Deflagration Threshold In The Molecular Magnet Mn12 Acetate, F Macià, J M. Hernandez, J Tejada, S Datta, S Hill, Christos Lampropoulos, G Christou

Chemistry Faculty Research and Scholarship

We report experimental studies of the stability of a Mn₁₂-Ac crystal against magnetic avalanches as a function of the magnitude and direction of the magnetic field, as well as a function of temperature. Strong evidence for quantum effects associated with this phenomenon is seen in the (H_z,H_x) metastability diagram. The data provide further support to the theory of magnetic deflagration.

Crystal Lattice Desolvation Effects On The Magnetic Quantum Tunneling Of Single-Molecule Magnets, G Redler, Christos Lampropoulos, S Datta, C Koo, T C. Stamatatos, N E. Chakov, G Christou, S Hill

Chemistry Faculty Research and Scholarship

High-frequency electron paramagnetic resonance (HFEPR) and alternating current (ac) susceptibility measurements are reported for a new high-symmetry Mn₁₂ complex, [Mn₁₂O₁₂(O₂CCH₃)₁₆(CH₃OH)₄]⋅CH₃OH. The results are compared to those of other high-symmetry spin S=10 Mn₁₂ single-molecule magnets (SMMs), including the original acetate, [Mn₁₂(O₂CCH₃)₁₆(H₂O)₄]⋅2CH₃CO₂H⋅4H₂O, and the [Mn₁₂O₁₂(O₂CCH₂Br)₁₆(H₂O)₄]⋅4CH₂Cl₂ and [Mn₁₂O …

Alignment Of Magnetic Anisotropy Axes In Crystals Of Mn12 Acetate And Mn12-Tbuac Molecular Nanomagnets: Angle-Dependent Ac Susceptibility Study, E Burzurí, Ch Carbonera, F Luis, D Ruiz-Molina, Christos Lampropoulos, G Christou

Chemistry Faculty Research and Scholarship

We report the results of angular-dependent ac susceptibility experiments performed on two derivatives of Mn₁₂ single-molecular magnets: the well-known Mn₁₂ acetate, which contains disordered acetic acid molecules in interstitial sites of the crystal structure and Mn₁₂-tBuAc, for which solvent molecules are very well ordered in the structure. Our results show (a) that the angular variation is very similar in the two compounds investigated and compatible with a maximum misalignment of the anisotropy axes of less than 3° and (b) that the tunneling rate is faster for the better ordered Mn₁₂-tBuAc compound. These experiments question …

Management And Social Indicators Of Soil Carbon Storage In A Residential Ecosystem, Midlothian, Va, Christopher M. Gough, Eliza A. Fritz

Virginia Journal of Science

Soil carbon storage- defined here as carbon mass per unit ground area- is an important ecosystem service, sequestering carbon that might otherwise exist in atmospheric CO₂ . Significant attention has focused on the effects that humans have on carbon cycling, but little is known about how human behaviors and attitudes relate to lawn carbon storage. The objectives of this study were to conduct household surveys in concert with soil carbon sampling in a 10-year-old exurban neighborhood near Richmond, Virginia to quantify differences in soil carbon storage between residential lawns and mixed pine-hardwood forest fragments, and to determine how lawn …

Decentralized Or Centralized Production : Impacts To The Environment, Industry, And The Economy, Abigail R. Clarke-Sather

Dissertations, Master's Theses and Master's Reports - Open

Since product take-back is mandated in Europe, and has effects for producers worldwide including the U.S., designing efficient forward and reverse supply chain networks is becoming essential for business viability. Centralizing production facilities may reduce costs but perhaps not environmental impacts. Decentralizing a supply chain may reduce transportation environmental impacts but increase capital costs. Facility location strategies of centralization or decentralization are tested for companies with supply chains that both take back and manufacture products.

Decentralized and centralized production systems have different effects on the environment, industry and the economy. Decentralized production systems cluster suppliers within the geographical market region …

Hitler's Baby Farms: The Lebensborn Project, John C. Faulkner

Vulcan Historical Review

pp. 28-52

An Interview With James Ward, Department Of Mathematics, Ashruta Patel

Inquiro (undergraduate research journal)

p. 23

Thinking Like A Research Expert: Schemata For Teaching Complex Problem-Solving Skills, Paul D. Callister

Faculty Works

The difference between expert and novice problem solvers is that experts have organized their thinking into schemata or mental constructs to both see and solve problems. This article demonstrates why schemata are important, arguing that they need to be made explicit in the classroom. It illustrates the use of schemata to understand and categorize complex research problems, map the terrain of legal research resources, match appropriate resources to types of problems, and work through the legal research process. The article concludes by calling upon librarians and research instructors to produce additional schemata and develop a common hierarchical taxonomy of skills, …

The Effectiveness Of Teaching Math Using Manipulatives In The Fourth Grade At Southwest Laurens Elementary, Denise D. Taylor

The Corinthian

I have taught math at Southwest Laurens Elementary for the past twenty years, my first twelve years as a second, third, fourth, fifth, and sixth grade Title I teacher and my last eight years as a self-contained regular education fourth grade teacher. For all twenty years I have taught at least one math class. One concern I have often had with the math curriculum at my school was the exclusion of many math manipulatives either because of lack of funding or because of the required time for preparation of lessons and instruction when including manipulatives. In this research project, I …

Cover And Contents

Turkish Journal of Veterinary & Animal Sciences

No abstract provided.

Cover And Contents

Turkish Journal of Veterinary & Animal Sciences

No abstract provided.

2009-2010 Graduate Bulletin, Rochester Institute Of Technology

RIT Digital Archives

No abstract provided.