Digital Commons Network^™

The Bright Optical/Nir Afterglow Of The Faint Grb 080710 – Evidence Of A Jet Viewed Off-Axis, T. Krühler, J. Greiner, P. Afonso, D. Burlon, C. Clemens, R. Filgas, D. A. Kann, S. Klose, A. Küpcü Yolda¸, S. Mcbreen, F. Olivares, A. Rau, A. Rossi, S. Schulze, G. P. Szokoly, Adria Updike, A. Yolda¸S

Arts & Sciences Faculty Publications

Aims. We investigate the optical/near-infrared light curve of the afterglow of GRB 080710 in the context of rising afterglows. Methods. Optical and near-infrared photometry was performed using the seven-channel imager GROND and the Tautenburg Schmidt telescope. X-ray data were provided by the X-ray Telescope onboard the Swift satellite. We construct an empirical light curve model using the available broadband data, which is well-sampled in the time and frequency domains. Results. The optical/NIR light curve of the afterglow of GRB 080710 is dominated by an initial increase in brightness, which smoothly turns over into a shallow power law decay. At around …

The Effect Of Air Preheating In A Biomass Cfb Gasifier Using Aspen Plus Simulation, Wayne Doherty, Anthony Reynolds, David Kennedy

Articles

In the context of climate change, increasing efficiency and energy security, biomass gasification is likely to play an important role in energy production. Atmospheric circulating fluidised bed (CFB) technology was selected for the current study. The primary objective of this research is to develop a computer simulation model of a CFB biomass gasifier that can accurately predict gasifier performance under various operating conditions. An original model was developed using ASPEN Plus (Advanced System for Process ENgineering Plus). The model is based on Gibbs free energy minimisation. The restricted equilibrium method was used to calibrate the model against experimental data. This …

Renewable Energy Resources And Technologies Applicable To Ireland, Fergal O'Rourke, Fergal Boyle, Anthony Reynolds

Articles

The energy consumed in Ireland is primarily achieved by the combustion of fossil fuels. Ireland’s only indigenous fossil fuel is peat; all other fossil fuels are imported. As well as fossil fuels continually becoming more expensive, their use as an energy source also has a negative impact on the environment. Ireland’s energy consumption can be separated into 3 divisions; transportation, electricity generation and heat energy. Ireland however has a vast range of high quality renewable energy resources. Ireland has set a target of 33% of its electricity will be generated from renewable sources by 2020[1]. The use of biomass, wind …

Simulation Of A Tubular Solid Oxide Fuel Cell Stack Operating On Biomass Syn-Gas Using Aspen Plus, Wayne Doherty, Anthony Reynolds, David Kennedy

Articles

A tubular solid oxide fuel cell (SOFC) stack is modelled and its operation on biomass syn-gas is investigated. The objective of this work is to develop a computer simulation model of a biomass gasification-SOFC (BG-SOFC) system capable of predicting performance under various operating conditions and using diverse fuels. The stack is modelled using Aspen Plus and considers ohmic, activation and concentration losses. It is validated against published data for operation on natural gas. Operating parameters such as fuel and air utilisation factor (U_f and U_a), current density (j) and steam to carbon ratio ( …

Advanced Current-Mode Control Techniques For Dc-Dc Power Electronic Converters, Kai-Tak Wan

Doctoral Dissertations

"There are many applications for dc-dc power electronic converters in industry. Considering the stringent regulation requirements, control of these converters is a challenging task. Several analog and digital approaches have already been reported in the literature. This work presents new control techniques to improve the dynamic performance of dc-dc converters"--Abstract, page iv.

Harding University Graduate And Professional Catalog 2009-2010, Harding University

Harding Academic Catalogs

Academic catalog for the graduate programs at Harding University.

Design Hazard Analysis, And System Level Testing Of A University Propulsion System For Spacecraft Application, Joseph R. Siebert

Masters Theses

"The Missouri Science and Technology Satellite (M-SAT) design team on the campus of the Missouri University of Science and Technology has developed a pair of satellites to perform an autonomous formation flight mission. To enable the mission, a unique cold gas propulsion system was developed which utilizes the refrigerant R-134a as propellant. This thesis details the design process and considerations which led to the propulsion system as integrated into the satellite for the Flight Competition Review of the NS4 competition. The design process described flowed from the mission requirements and program restrictions down through component-level requirements and resulted in a …

Double-Glazing Interferometry, Vincent Toal, Emilia Mihaylova

Articles

This note describes how white light interference fringes can be seen by observing the Moon through a double-glazed window. White light interferometric fringes are normally observed only in a well-aligned interferometer whose optical path difference is less than the coherence length of the light source, which is approximately one micrometer for white light. Obtaining such fringes in a Michelson interferometer is not a trivial task.1 The interferometer is typically illuminated with a monochromatic source and the path length difference adjusted with a wedge angle between the interferometer mirrors so that five or six vertical fringes are visible, indicating nearly equal …

First Approaches To Standard Protocols And Reference Materials For The Assessment Of Potential Hazards Associated With Nanomaterialss, Gordon Chambers, Hugh Byrne, Iseult Lynch, Micheal Riediker, Hans Bouwmeester, Hans Marvin, Alan Casey, Markus Berges, Martin Clift, Teresa Fernandez, Lise Fjellsbo, Lucienne Juillerat, Gert Roebben, Christoph, Klein, Qinglan Wu, Vince Hackley, Jean-Pierre Kaiser, Wolfganag Kreyling, Michael Garner, Peter Hatto,, Kenneth Dawson

Articles

All new technologies have an inherent risk, which is typically assessed alongside the development of applications of the technology. This is also the case for nanotechnology: a key concern in the case of engineered nanomaterials (ENMs) is that due to their very small size, NMs can reach areas such as the cell that are inaccessible to other materials, such as implants and drugs. As a result of their large surface area, NMs may be more reactive than other larger materials. The large physical and chemical variability of NMs, and the fact that small changes can have large consequences, mean that …

Optical Properties Of Silica-Mfi Doped Acrylamide-Based Photopolymer, Tzvetanka Babeva, Rosen Todorov, Svetlana Mintova, Temenujka Yovcheva, Izabela Naydenova, Vincent Toal

Articles

The optical properties of acrylamide-based photopolymer doped with pure silica MFI-type zeolites are studied by refractometric and spectrophotometric means. Dynamic Light Scattering and Transmission Electron Microscopy are used for zeolite characterization and laser refractometry and White Light Interferometric profilometry are used for surface characterization of the composites. Refractive indices and absorption coefficients of composites are determined from their transmittance and reflectance spectra. The calculated dispersion curves are further used for deriving the zeolites refractive index and porosity and the latter compared to the values of total pore volume obtained from N2-sorption measurements. The impact of the doping level on the …

Optical And Holographic Characteristics Of Photopolymer Layers, Temenujka Yovcheva, Izabela Naydenova, Ivanka Vlaeva, Suzanne Martin, Vincent Toal, Simeon Sainov

Articles

In the present work the optical and holographic characteristics of acrylamide-based photopolymer layers are studied. For the first time the refractive index change of a liquid acrylamide photopolymer due to exposure at 532 nm is obtained using a critical angle laser micro-refractometer. The 30 mm thick solid photopolymer films are prepared by casting on glass substrates. Bragg holographic gratings with spatial frequencies of 710 mm-1, 1050 mm-1 and 1600 mm-1 are recorded using a diode laser operating at 532 nm wavelength. The diffraction efficiency dependence on the exposure energy is investigated. The obtained results are compared with the Stetson holographic …

Effect Of Air Pollution Controls On Black Smoke And Sulfur Dioxide Concentrations Across Ireland, Patrick J. Goodman, David Q. Rich, Ariana Zeka, Luke Clancy, Douglas W. Dockery

Articles

During the 1980s Ireland experienced severe pollution episodes, principally because of domestic coal burning. In 1990, the Irish government introduced a ban on the marketing, sale, and distribution of coal in Dublin. They extended the ban to Cork in 1995 and to ten other communities in 1998 and 2000. We previously reported declines in particulate (black smoke [BS]) and sulfur dioxide (SO2) concentrations in Dublin following the 1990 coal ban. We now explore and compare the effectiveness of these sequential bans in 1990, 1995, 1998, and 2000. Daily BS and total gaseous acidity (SO2) measurements were compiled between 1980 and …

Common Data Set, 2008-2009, Planning, Research, And Policy Analysis

Common Data Set (2001-present)

Common Data Set 2008-2009 for Illinois State University

2008 Trademark Decisions Of The Federal Circuit A Review Of Recent Decisions Of The United States Court Of Appeals For The Federal Circuit: Area Summaries , David M. Kelly, Stephanie H. Bald

American University Law Review

In 2008, the United States Court of Appeals for the Federal Circuit issued eight trademark decisions and designated one of those eight decisions as precedential. These numbers are significantly lower than in recent years. The cases consist of appeals from the Trademark Trial and Appeal Board (“TTAB”), the United States Court of International Trade, and the United States Court of Federal Claims. Of the eight trademark decisions, four focused on substantive issues and four primarily involved procedural issues. The Federal Circuit generally adopted the findings of the lower tribunals, affirming all but one of the eight decisions on appeal. The …

Increased Market Power As A New Secondary Consideration In Patent Law A Review Of Recent Decisions Of The United States Court Of Appeals For The Federal Circuit, Andrew Blair-Stanek

American University Law Review

Courts have developed several non-technical “secondary considerations” to help judges and juries in patent litigation decide whether a patent meets the crucial statutory requirement that a patent be non-obvious. This Article proposes a tenth secondary consideration to help judges and juries: increased market power. If a patent measurably increases its holders’ market power in the market into which it sells products or services, then that increase should weigh in favor of finding the patent non-obvious. Using increased market power incorporates the predictive benefits of several other secondary considerations, while often increasing the accuracy and availability of evidence. It would provide …

Flame, Furnace, Fuel: Creating Kansas City In The Nineteenth Century, Twyla Dell

Antioch University Dissertations & Theses

Though this work is a fuel and energy history of Kansas City from 1820 to 1920, it also provides a tool to describe and analyze fuel and energy transitions. The four parts follow the rise and fall of wood, coal and oil as their use grows to a peak and, in the case of wood, declines. The founding and growth of Kansas City as an “instant city” that grew from zero population to over three hundred twenty thousand in a hundred years embodies the increased use of fuels and energy in an urban setting and serves as a case study. …

Openline Newsletter, January 2009, Civil Service Council

OpenLine Newsletter

A monthly newsletter for Civil Service employees, Volume XXXIII, Number 7, January 2009.

2009-2010 Graduate Catalog, Armstrong Atalntic State University

Armstrong Office of the Registrar: Graduate Catalogs (Archived)

Academic catalog for Armstrong Atlantic State University.

2009-2010 Undergraduate Catalog, Armstrong Atlantic State University

Armstrong Office of the Registrar: Undergraduate Catalogs (Archived)

Academic catalog for Armstrong Atlantic State University.

Synthesis, Characterization And Use Of Nb2 O5 Based Catalysts In Producing Biofuels By Transesterification, Esterification And Pyrolysis, Rodrigo F. Brandão, Rafael L. Quirino, Vinicius M. Mello, André P. Tavares, Antônio C. Peres, Flávia Guinhos, Joel C. Rubim, Paulo A. Z. Suarez

Chemistry: Faculty Publications (1990-2023)

Nb2O5/HX (X = HSO4-, H2PO4-, NO3-) compounds were obtained from the treatment of niobium acid (Nb2O5·xH2O) with sulfuric, phosphoric, and nitric acids as well as Nb2O5 and Nb2O5·xH2O have been investigated as catalysts for the transesterification, esterification and pyrolysis of vegetable oils. The compounds were characterized by thermal analysis (DTA-TGA), spectroscopy (DRX, FT-IR and FT-Raman), surface area (BET) and the acidity (Ho) determined by n-butylamine titration using the Hammet´s indicator method. It was observed that after the acid treatment both the surface area and the acidity decreased as compared to the starting Nb2O5·xH2O. The only exception was a higher acidity …

The Relationship Of Teachers' Motivational Perceptions And Instructional Integration Of The Internet: An Inquiry Of Elementary Teachers In One Georgia School District, Starla Stone Barker

College of Graduate Studies: Theses & Dissertations

Author's abstract: Schools have spent much time and money providing teachers and students access to the Internet. As access has become commonplace in schools, teachers are increasingly encouraged to incorporate Internet resources in their classroom. Teachers' use of the Internet has increased in recent years; however, their use remains limited. This mixed methods study sought to understand why some teachers eagerly integrated the Internet in the classroom while others were hesitant to use the Internet with their students. More specifically, this mixed methods study explored how elementary teachers' perceptions of the extent of Internet usefulness/importance, enjoyment/liking, confidence, and anxiety may …

Southern Educator, Georgia Southern University

College of Education: News & Publications (2003-2023)

• Counselor Education Programs Attain CACREP Accreditation
• Jack Miller Faculty Awards Presented
• Accomplishments 2008-2009
• Welcome New Faculty
• Leading the Way Into the 21st Century: COE’s Georgia ONmyLINE Programs
• National Search Underway for COE Dean
• Brick Campaign Endows New Scholarship
• News from the School Psychology Program
• TEACH Grant
• International Student Teacher Exchanges
• Grants received by Faculty and IEP Alumni
• International Students Studying with COE
• GA Power New Teacher Award Winners
• Alumna Donates Brother’s Books to Library
• Homecoming 2009
• Staff News

Discrepant Teaching Events: Using An Inquiry Stance To Address Students' Misconceptions, Judith Longfield

Faculty Center Publications

Science instructors have long known that the use of discrepant events with unexpected outcomes is a powerful method of activating thinking. A discrepant teaching event is similar to a discrepant science event in that it vividly portrays what is often an abstract construct or concept and has an unexpected outcome. The unexpected outcome creates what Piaget (1971) refers to as disequilibrium, thereby uncovering students’ naïve conceptions and tacit beliefs about the concept being studied. This article defines what a discrepant teaching event is and compares and contrasts discrepant science events and discrepant teaching events. Examples of discrepant teaching events useful …

Faculty Handbook, Georgia Southern University

Faculty Handbooks

Faculty Handbook for Georgia Southern University for the 2009-2010 academic year. The Faculty Handbook is published online by the Office of the Vice President for Academic Affairs and archived in Digital Commons@Georgia Southern.

Advance (Spring 2009), Georgia Southern Division Of Continuing And Professional Education

Division of Continuing & Professional Education

No abstract provided.

Advance (Fall 2009), Georgia Southern Division Of Continuing And Professional Education

Division of Continuing & Professional Education

No abstract provided.

Campus Violence: Understanding The Extraordinary Through The Ordinary, Nancy Chi Cantalupo

Georgetown Law Faculty Publications and Other Works

Recent mass shootings on college campuses have focused many on the responsibilities of colleges and universities to prevent and respond to such violence. However, in statistical terms, this type of campus violence can thankfully be considered relatively extraordinary. In contrast, the only type of campus violence that is unfortunately common enough to be characterized as “ordinary” is peer sexual assault and similar forms of campus gender-based violence. Accordingly, this essay explores the scope and dynamics of both “ordinary” and “extraordinary” campus violence, discusses the law and “best practices” dealing with peer sexual violence victims’ rights and the due process rights …

Roscoe Pound, Melvin Belli, And The Personal-Injury Bar: The Tale Of An Odd Coupling, Joseph A. Page

Georgetown Law Faculty Publications and Other Works

In the fourth chapter of Patriots and Cosmopolitans: Hidden Histories of American Law, legal historian John Fabian Witt tells the story of a collaboration between storied scholar Roscoe Pound and trial virtuoso Melvin M. Belli, which he calls "among the most startling and yet unremarked-upon relationships in the annals of American law." Witt argues that it both shaped and energized the efforts of personal-injury lawyers to oppose proposals that would shift to the administrative branch of government responsibility for compensating auto-accident victims. Entitled "The King and the Dean," in reference to the media's coronation of Belli as the "King of …

Post-Modern Meditations On Punishment: On The Limits Of Reason And The Virtues Of Randomization, Bernard E. Harcourt

Faculty Scholarship

This chapter presents an authoritative overview of punishment, with particular emphasis on the limits of reason and the virtue of randomization. It includes comments by some of the nation's top legal scholars from the field of criminal law, tackling topics such as the Enlightenment ideal of social engineering through punishment and the role of chance in the administration of criminal justice.

The Relationship Between Plasma Homocysteine And Early Coronary Collateral Vessel Development After Acute Myocardial Infarction, Telat Keleş, Tahi̇r Durmaz, Ni̇hal Akar Bayram, Murat Akçay, Ekrem Yeter, Hüseyi̇n Ayhan, Engi̇n Bozkurt

Turkish Journal of Medical Sciences

Aim: Homocysteine is known to inhibit endothelial cell proliferation, which is a key event in angiogenesis. Factors responsible for the presence or absence of coronary collateral circulation are poorly understood. Therefore, in this study we investigated the effect of plasma homocysteine level on the early formation of angiographically visible collaterals after acute myocardial infarction. Materials and Methods: The study included 60 patients that had ST-segment elevation myocardial infarction (STEMI). All the patients underwent coronary angiography 1-4 days after admission (mean: 2.3 ± 1.2 days). Patients were graded according to Rentrop classification. Patients with grade 0 or 1 collateral vessels were …