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Articles 2881 - 2910 of 13273
Full-Text Articles in Entire DC Network
National Clean Energy Summit Afternoon Keynote, Robert E. Rubin
National Clean Energy Summit Afternoon Keynote, Robert E. Rubin
National Clean Energy Summit
Afternoon keynote
Panel Ii: The Clean Energy Economy, Hilda Solis, Dina Titus, Dan Reicher, Edward Mazria
Panel Ii: The Clean Energy Economy, Hilda Solis, Dina Titus, Dan Reicher, Edward Mazria
National Clean Energy Summit
Panel discussion Moderator: Steve Colwell, Executive Director, Sea Change Foundation
Panel I: Earning More By Using Less: Businesses, Efficiency, And Renewable Energy, Janet Napolitano, Jim Murren, Jon Creyts, Michael Yackira, Rhone Resch
Panel I: Earning More By Using Less: Businesses, Efficiency, And Renewable Energy, Janet Napolitano, Jim Murren, Jon Creyts, Michael Yackira, Rhone Resch
National Clean Energy Summit
Panel discussion Moderator: Randolph Townsend, Nevada State Senator
National Clean Energy Summit Welcome Remarks & Morning Keynote, Rose Mckinney James, David Ashley, John Podesta, Harry Reid, T. Boone Pickens
National Clean Energy Summit Welcome Remarks & Morning Keynote, Rose Mckinney James, David Ashley, John Podesta, Harry Reid, T. Boone Pickens
National Clean Energy Summit
Welcome remarks & Morning keynote
National Clean Energy Panel Presentations
National Clean Energy Panel Presentations
National Clean Energy Summit
Panel presentations, 206 PowerPoint slides
The Unevoc National Centre Ireland (Unci) A Case Study: Description, Reflections And Opportunities, Aidan Kenny
The Unevoc National Centre Ireland (Unci) A Case Study: Description, Reflections And Opportunities, Aidan Kenny
Conference Papers
In this paper I adopt and merge elements from both Yin (2005) ‘Case Study Method’, and Guba and Lincoln (1989) ‘Fourth Generation Evaluation’ to provide the reader with some background information, insights and future directions of the recently established UNEVOC National Centre Ireland. This is presented in three separate sections; Section 1, Descriptions, provides details on the background of the Technological University Dublin, locates the emergence of the UNESCO-UNEVOC agenda in DIT, and DIT’s appointment as the UNEVOC National Centre Ireland. Section 2, Reflections, details the work of the National UNEVOC Centre Ireland during the period 2006-2008. I note some …
Experimentally Determining The Exchange Parameters Of Quasi-Two-Dimensional Heisenberg Magnets, P A. Goddard, J Singleton, P Sengupta, R D. Mcdonald, T Lancaster, S J. Blundell, F L. Pratt, S Cox, N Harrison, Jamie L. Manson, H I. Southerland, J A. Schlueter
Experimentally Determining The Exchange Parameters Of Quasi-Two-Dimensional Heisenberg Magnets, P A. Goddard, J Singleton, P Sengupta, R D. Mcdonald, T Lancaster, S J. Blundell, F L. Pratt, S Cox, N Harrison, Jamie L. Manson, H I. Southerland, J A. Schlueter
Chemistry and Biochemistry Faculty Publications
Though long-range magnetic order cannot occur at temperatures T > 0 in a perfect two-dimensional ( 2D) Heisenberg magnet, real quasi-2D materials will invariably possess nonzero inter-plane coupling J(perpendicular to) driving the system to order at elevated temperatures. This process can be studied using quantum Monte Carlo calculations. However, it is difficult to test the results of these calculations experimentally since for highly anisotropic materials in which the in-plane coupling is comparable with attainable magnetic fields J(perpendicular to) is necessarily very small and inaccessible directly. In addition, because of the large anisotropy, the Neel temperatures are low and difficult to determine …
Strategies For Expanding The Halogen Bonding Periodic Table And Desigining Complementary Halogen/Hydrogen Bonding Synthons, Hadi Arman
All Dissertations
Halogen bonding is the donation of electron density from an electron donor, such as N, O, S, Se atoms, to an electron acceptor such as a dihalogen or organohalogen. This interaction plays an important role in biological systems, such as the thyroid gland and is useful in many other fields such as drug design, crystal engineering, synthetic chemistry, material science and bioinorganic chemistry. However, currently there is a lack of information for this interaction in systems involving organoiodines with sulfur and selenium electron donors.
A variety of sulfur and selenium Lewis base donors were investigated with various organoiodines. The main …
Analysis, Instrumentation, And Visualization Of Embedded Network Systems: A Testbed-Based Approach, Andrew Dalton
Analysis, Instrumentation, And Visualization Of Embedded Network Systems: A Testbed-Based Approach, Andrew Dalton
All Dissertations
Embedded network systems are gaining adoption and emerging as the next step in the shift toward ubiquitous computing. Deployments range in scale from tens of devices to over a thousand; applications can be massively parallel and distributed, executing over unreliable links and devices. The programming model used to develop these systems is fundamentally different than the models provided by traditional imperative programming languages; many existing software engineering tools and techniques cannot be applied. In particular, the lack of tools and techniques to analyze, instrument, and visualize these systems make their development more difficult.
We present a framework to …
Portfolio Selection Under Various Risk Measures, Hariharan Kandasamy
Portfolio Selection Under Various Risk Measures, Hariharan Kandasamy
All Dissertations
Portfolio selection has been a major area of study after Markowitz's ground-breaking paper. Risk quantification for portfolio selection is studied in the literature extensively and many risk measures have been proposed.
In this dissertation we study portfolio selection under various risk measures. After exploring important risk measures currently available we propose a new risk measure, Unequal Prioritized Downside Risk (UPDR). We illustrate the formulation of UPDR for portfolio selection as a mixed-integer program. We establish conditions under which UPDR can be formulated as a linear program.
We study single-period portfolio selection using two risk measures simultaneously. We propose four alternate …
Numerical Analysis Of A Fractional Step Theta-Method For Fluid Flow Problems, John Chrispell
Numerical Analysis Of A Fractional Step Theta-Method For Fluid Flow Problems, John Chrispell
All Dissertations
The accurate numerical approximation of viscoelastic fluid flow poses two difficulties: the large number of unknowns in the approximating algebraic system (corresponding to velocity, pressure, and stress), and the different mathematical types of the modeling equations. Specifically, the viscoelastic modeling equations have a hyperbolic constitutive equation coupled to a parabolic conservation of momentum equation. An appealing approximation approach is to use a fractional step $\theta$-method. The $\theta$-method is an operator splitting technique that may be used to decouple mathematical equations of different types as well as separate the updates of distinct modeling equation variables when modeling mixed systems of partial …
Design And Validation Of A Multimethod Assessment Of Metacognition And Study Of The Effectiveness Of Metacognitive Interventions, Guillermo Sandi-Urena
Design And Validation Of A Multimethod Assessment Of Metacognition And Study Of The Effectiveness Of Metacognitive Interventions, Guillermo Sandi-Urena
All Dissertations
The central role of metacognition in learning and problem solving, in general and in chemistry in specific, has been substantially demonstrated and has raised pronounced interest in its study. However, the intrinsic difficulties associated with the inner processes of such a non-overt behavior have delayed the development of appropriate assessment instruments. The first research question addressed in this work originates from this observation: Is it possible to reliably assess metacognition use in chemistry problem solving? This study presents the development, validation, and application of a multimethod instrument for the assessment of metacognition use in chemistry problem solving. This multimethod is …
Lead Chalcogenide Nano-Composites: Synthesis, Thermal And Electrical Transport Properties, Bo Zhang
Lead Chalcogenide Nano-Composites: Synthesis, Thermal And Electrical Transport Properties, Bo Zhang
All Dissertations
This dissertation focused on the investigation of the thermoelectric properties of PbTe nanocomposites, presenting a series of experimental investigation and qualitative theoretical analysis regarding utilizing the nanostructures to enhance the thermoelectrical properties. Three innovative synthesis techniques, which are related to fabricating nanocomposites, were developed. These three techniques are the size-selective growth of PbTe nanoparticles by a convection CVD technique, the nanolayer coating technique by hydrothermal method, and the alkali-metal-nano-surface-treatment. In the future, these techniques can be applied to many other thermoelectric material systems.
We proposed to use the grain boundary engineering technique route in the thermoelectric nanocomposite field and successfully …
Performance Based Decisions Under Uncertainty And Risk, Sundeep Samson
Performance Based Decisions Under Uncertainty And Risk, Sundeep Samson
All Dissertations
Decision making has became increasingly complex as risky decisions are made in uncertain environments. To minimize risk, the problem of quantifying risk becomes very significant. In our review of the literature, we found a number of different risk measures. A closer study reveals that most of these risk measures define both risk and uncertainty in many different ways.
In this dissertation, we model uncertainty and risk based on the Knightian definition of uncertainty and risk. We propose this alternative modeling paradigm and introduce our decision making methodology by solving an illustrative problem presented by a group of decision makers from …
3-D Calculation Of Atom-Surface Collisions With Direct Scattering, Trapping And Desorption, Guoqing Fan
3-D Calculation Of Atom-Surface Collisions With Direct Scattering, Trapping And Desorption, Guoqing Fan
All Dissertations
In this work a scattering theory is developed to simulate the gas-surface scattering procedure in three dimensions, using an iterative algorithm and classical mechanics for the collision process, that describes both direct scattering and trapping-desorption of an incident beam of atomic particles. The initially trapped fraction of particles can be followed as they continue to make further collisions with the surface until they are all eventually promoted back into the positive energy continuum and leave the surface region.
With two different models, the discrete model and the smooth-surface model of the differential reflection coefficient, a series of calculation are made …
08-19-2008 Swosu Faculty Honored For Years Of Service, Southwestern Oklahoma State University
08-19-2008 Swosu Faculty Honored For Years Of Service, Southwestern Oklahoma State University
THE BARK ARCHIVE 2008
Several Southwestern Oklahoma State University faculty members were honored for their years of service during the SWOSU Faculty and Administration Workshop held August 18 on the Weatherford campus.
Estimating Geocenter Variations From A Combination Of Grace And Ocean Model Output, Sean Swenson, D. Chambers, John Wahr
Estimating Geocenter Variations From A Combination Of Grace And Ocean Model Output, Sean Swenson, D. Chambers, John Wahr
Marine Science Faculty Publications
In this study, we estimate a time series of geocenter anomalies from a combination of data from the Gravity Recovery and Climate Experiment (GRACE) satellite mission and the output from ocean models. A matrix equation is derived relating total geocenter variations to the GRACE coefficients of degrees two and higher and to the oceanic component of the degree one coefficients. We estimate the oceanic component from t wo state-of-the-art ocean models. Results are compared to independent estimates of geocenter derived from other satellite data, such as satellite laser ranging and GPS. Finally, we compute degree one coefficients that are consistent …
Thermal And Structual Properties Of Candidate Moldable Glass Types, Scott Gaylord
Thermal And Structual Properties Of Candidate Moldable Glass Types, Scott Gaylord
All Theses
This thesis contains results of our efforts to develop a method for defining key glass material properties that must be known and modeled for the design and experimental validation of a precision glass molding (PGM) process for optical glasses. Viscosity, calorimetric, and thermal expansion properties of two commercial glass types N-BK7 and P-SK57 of SCHOTT were characterized to establish a proof-of-concept protocol for the experimental determination of meaningful material properties. Experimental results were determined in order to be incorporated into a computational model predicting final glass size and shape following a molding cycle. Experimental methods were confirmed on the two …
Structure And Transport Characteristics Of Highly Rigid Ionomers, Lilin He
Structure And Transport Characteristics Of Highly Rigid Ionomers, Lilin He
All Dissertations
The structure and transport characteristics in a novel family of ionomers consisting of a hydrophobic polyphenylene backbone substituted by sulfonic acid functionalized phenyl side chains (sPPs) have been investigated. These polymers have potential applications in electrochemistry as well as separation both as membranes and thin films. The bulk structure as a function of hydration has been explored by X-ray and neutron scattering. Interfacial structure was studied by AFM and neutron reflectometry. The characteristics of water in the bulk were studied by NMR and FTIR and that in thin films by neutron reflectometry.
The sPPs exhibit characteristic structure due to their …
Modeling Systems For Optimal Resource Allocation, Scheduling, And Decision Making, Esengul Tayfur
Modeling Systems For Optimal Resource Allocation, Scheduling, And Decision Making, Esengul Tayfur
All Dissertations
This dissertation focuses on the resource requirements and scheduling problem for logistic systems. We investigate solutions to this problem in two different logistic systems: logistic system of the health care facilities during emergency evacuations and delivery and distribution system of production industries. All hospitals must have an evacuation plan to ensure the safety of patients and prevent the loss of life. However, hospital operators have not been able to quantify how resource availability, the cost of acquiring those resources, and evacuation completion time are related. This research addresses this problem and contributes two methodologies to solve this problem. In the …
The Decay Rate Of The Solution To A Tridiagonal Linear System With A Very Special Right Hand Side, Carl Christian Kjelgaard Mikkelsen
The Decay Rate Of The Solution To A Tridiagonal Linear System With A Very Special Right Hand Side, Carl Christian Kjelgaard Mikkelsen
Department of Computer Science Technical Reports
No abstract provided.
Preliminary Study On Optimization Of Data Distribution In Resource Sharing Systems, Grzegorz Chmaj, Krzysztof Walkowiak
Preliminary Study On Optimization Of Data Distribution In Resource Sharing Systems, Grzegorz Chmaj, Krzysztof Walkowiak
Electrical & Computer Engineering Faculty Research
Grid structures are increasingly considered as very convergent with peer-to-peer networks. This paper presents a model of network acting both as grid and peer-to-peer network, used for data computation and distribution. Presented PPLC algorithm is a complete solution for both grid and peer-to-peer points of view. Problem formulation is presented, as well as solution heuristic algorithm and research results.
The Effects Of Nanoparticle Inclusions Upon The Microstructure And Thermoelectric Transport Properties Of Bismuth Telluride-Based Composites, Nick Gothard
All Dissertations
Research into materials that have high efficiencies of thermoelectric heat-energy conversion has been at a plateau since the middle of the last century. During this time, efficiencies have been engineered high enough for several interesting niche applications but not high enough for widespread adaptation into traditional power generation or refrigeration technologies. The past decade has seen considerable advancement as a number of theoretical works have suggested that lower dimensional structures could hold the key for enhanced efficiency, and several experiments have provided the proof of principle needed to inspire just such a research direction. The benefit of low dimensional structures …
Inferring Mechanical Resonances In Micro - And Nanocantilevers Using The Harmonic Detection Of Resonance (Hdr) Method To Develop A Novel Sensing Platform, Gayatri Keskar
All Dissertations
During the past two decades, advances in microelectromechanical systems (MEMS) have spurred efforts worldwide to develop sensing platforms based on smart microcantilevers. A microcantilever beam is one of the simplest MEMS structures which forms the basis for portable, fast and highly sensitive schemes that are capable of measuring small deflections in static or dynamic response due to changes in external parameters such as mass, pressure, charge, etc.
In this dissertation, I mainly focus on MEMS sensors with transducers in the form of microcantilevers. Variations in the microcantilever's response such as resonant frequency, amplitude, phase and quality factor when exposed to …
Revenue And Order Management Under Demand Uncertainty, Kiran Chahar
Revenue And Order Management Under Demand Uncertainty, Kiran Chahar
All Dissertations
We consider a firm that delivers its products across several customers or markets, each with unique revenue and uncertain demand size for a single selling season. Given that the firm experiences a long procurement lead time, the firm must decide, far in advance of the selling season not only the markets to be pursued but also the procurement quantity. In this dissertation, we present several operational scenarios in which the firm must decide which customer demands to satisfy, at what level to satisfy each customer demand, and how much to produce (or order) in total.
Traditionally, a newsvendor approach to …
Electrochemical Synthesis And Characterization Of Polymers From Bis(3,4-Ethylenedioxythiophene)-Thiophenes (Bedot-Ts) And Bis(3,4-Ethylenedioxythiophene)-Benzenes (Bedot-Bs) As Optoelectronic Materials, Kalya Eaiprasertsak
All Dissertations
ABSTRACT
A series of bis(3,4-ethylenedioxythiophene)-thiophene derivatives (BEDOT-Ts) and bis(3,4-ethylenedioxythiophene)-benzene derivatives (BEDOT-Bs) monomers were electrochemically polymerized onto glassy carbon or ITO-coated glass electrodes. Cyclic voltammetry (CV), infrared (IR), UV-vis-NIR and photoluminescence (PL) spectroscopy were employed to investigate and characterize properties of resulting polymers. dc-conductivities of these polymers were measured by the four-point probe method.
Cyclic voltammetry studies show that the redox half potentials of PBEDOT-3BT, PBEDOT-3OT, PBEDOT-3TBS and PBEDOT-3MPT are -290, -297, -325 and -284 mV versus Ag/Ag+, respectively. The redox half potentials of PBEDOT-TOL, PBEDOT-BOB and PBEDOT-FB are -130, -147 and -327 mV vs. Ag/Ag+, respectively, and a bit higher …
Synthesis, Electronic Structure, And Reactivity Of Endohedral Metallofullerenes And Other Endohedral Carbon Nanostructures, Bevan Elliott
Synthesis, Electronic Structure, And Reactivity Of Endohedral Metallofullerenes And Other Endohedral Carbon Nanostructures, Bevan Elliott
All Dissertations
The discovery in 1985 of fullerenes combined with the development of STM beginning in 1981 is credited as the starting point of the current nanoscience revolution. Endohedral fullerenes, discovered shortly after, have drastically different electronic properties when compared with the empty fullerenes. This dissertation has as its central focus the synthesis and electronic properties of endohedral metallofullerenes and other endohedral nanostructures.
The opening two chapters give a brief background of the discovery of fullerenes. A comprehensive literature list is given for the various families of trimetallic nitride endohedral fullerenes as well as other large endohedral metallic cluster fullerenes. Finally, a …
Homomorphisms Of Graphs, Samuel Lyle
Homomorphisms Of Graphs, Samuel Lyle
All Dissertations
Understanding the structure of graphs is fundamental to advances in many areas of graph theory, as well as in many applications. In many cases, an analysis of the structure of graphs follows one of two approaches; either many structural properties are considered over a restricted class of graphs, or a particular structural property is considered over many classes of graphs. Both approaches will be considered in this dissertation.
Graphs which do not contain a clique of size r, i.e., Kr-free graphs, are of fundamental importance in the area of extremal graph theory. Many results have been obtained …
Synthesis And Pharmacology Of N-Alkyl-3-(Halo-Naphthoyl)Indoles, Valerie Smith
Synthesis And Pharmacology Of N-Alkyl-3-(Halo-Naphthoyl)Indoles, Valerie Smith
All Dissertations
The medicinal values of marijuana have often been overshadowed due to the psychotropic, 'recreational' effects it brings about in a user. For hundreds of years the therapeutic uses of cannabis sativa were appreciated, but the inability to control the dosage of the main constituent, and therefore the psychotropic effects, rendered the drug a liability. The elucidation of the structure of this main psychoactive constituent, ∆9-tetrahydrocannabinol (∆9-THC) by Gaoni and Mechoulam in 1964 opened the door to the discovery of a vast array of knowledge about cannabinoids. From the multiple classes of cannabinoids and the ways these compounds interact with the …
Some Problems In Statistical Mechanics With Applications To Materials Science, Ethan Ballard
Some Problems In Statistical Mechanics With Applications To Materials Science, Ethan Ballard
All Dissertations
In this work, some problems in statistical mechanics related to condensed matter physics and of general interst in materials science, physics, chemistry and polymer science are considered. In chapters 1-4, the work by E.M. Lifshitz on the group-theoretical refinements of the Landau theory of phase transitions is brought to completion. Based on mathematical results obtained by Yamabe, Osgood, Phillips, Sarnak, and Kholodenko analytical results for determinants were developed which allows for prediction of the symmetry of the phase after a phase transition provided that the symmetry prior to the phase transition is known. Numerical results are presented which are in …