Digital Commons Network^™

A Semi-Empirical Jet Noise Model Derived Using The Energy Spectrum Function, Miles Owen

Theses

No abstract provided.

Integration Of A Magnetic Bias Field Coil In A Plasmoid Thruster, Kjell-Edmund Ims

Theses

No abstract provided.

Thermal Characterization Tests Of The Qu Tube Heat Pipe, Parthib R. Rao

Theses

No abstract provided.

Experimental Techniques In Infrared Measurements Of Thin-Film Plastics, Robert F. Hawkins

Theses

No abstract provided.

Georgia Southern University Fact Book, Georgia Southern University

Georgia Southern Fact Books (1976-2022)

No abstract provided.

Eagle Executive Magazine, Georgia Southern University

College of Business: News & Publications

• Welcome, Dr. Brooks A. Keel ! ! !
• The Grube Era
• COBA Offers First Ph.D. at Georgia Southern
• A message from Dean Shiffler
• Sibbald Heads BBRED
• 2009 scholarship recipients
• Georgia Society of CPAs Presents Chair of AICPA
• Students Meet Textbook Author
• COBA’s Student Advisory Board
• COBA Golf Tournament
• From the Director
• Georgia WebMBA®
• MAcc Update
• Greg Van Zant
• Alumni in the spotlight
• Faces of Homecoming 2009
• COBA Welcomes New Faculty & Administrators
• New Toys “R” Us Partnership
• The Princeton Review Listing
• Eagle FastPitch
• Georgia Trend’s “40 under 40”
• White Collar Crime Lectures
• Eagle Executive Society Members
• 2009 Professor for a …

Undergraduate And Graduate Catalog [2008-2009], Georgia Southern University

Undergraduate & Graduate Catalogs

No abstract provided.

Public Policy, Social Change, And The Ethics Triangle: Undocumented Immigrants And Higher Education In The United States, Matthew Collins, Giselle Reid

Journal of Sustainable Social Impact

The institutions of higher education in the United States face the dilemma of deciding whether to admit and matriculate students without legal immigration status. This public policy question involves careful interpretation of federal and state law, general public sentiment, the effects on the individual institutions, as well as the plight of undocumented immigrant students and their parents. The purpose of this research was to analyze the ethical dilemma facing colleges and universities concerning whether to allow or deny admission to undocumented immigrant students, utilizing the ethics triangle. This research argued that the benefits of facilitating higher education for undocumented students …

The Ability Of Firefighting Personnel To Cope With Stress, David Milen

Journal of Sustainable Social Impact

The purpose of this study was to identify the effectiveness of the coping strategies and resources that firefighters use to deal with personal and workplace stressors. One hundred and fifteen firefighting personnel from 4 fire departments in Illinois and Indiana participated. The Coping Resources Inventory for Stress (CRIS) Scale measured stress levels and coping strategies. The results showed that firefighters who were not physically fit, who lacked social support, and who were unable to control tension and structure daily activities experienced feelings of low confidence. The findings from this study can provide fire department administrators and company officers with ways …

The Grasp Of Physics Concepts Of Motion: Identifying Particular Patterns In Students' Thinking, Ihab Obaidat, Ehab Malkawi

International Journal for the Scholarship of Teaching & Learning

No abstract provided.

3g Migration In Pakistan, Unzila Pervaiz

Theses

The telecommunication industry in Pakistan has come a long way since the country's independence in 1947. The initial era could be fairly termed as the PTCL (Pakistan Telecommunication Company Limited) monopoly, for it was the sole provider of all telecommunication services across the country. It was not until four decades later that the region embarked into the new world of wireless communication, hence ending the decades old PTCL monopoly. By the end of the late 1990's, government support and international investment in the region opened new doors to innovation and better quality, low cost, healthy competition. Wireless licenses for the …

Order Acceptance Using Genetic Algorithms, Walter O. Rom, Susan A. Slotnick

Business Faculty Publications

This paper uses a genetic algorithm to solve the order-acceptance problem with tardiness penalties. We compare the performance of a myopic heuristic and a genetic algorithm, both of which do job acceptance and sequencing, using an upper bound based on an assignment relaxation. We conduct a pilot study, in which we determine the best settings for diversity operators (clone removal, mutation, immigration, population size) in connection with different types of local search. Using a probabilistic local search provides results that are almost as good as exhaustive local search, with much shorter processing times. Our main computational study shows that the …

The Public’S Right To Health: When Patient Rights Threaten The Commons, Elizabeth Weeks Leonard

Scholarly Works

This Article offers a contemporary examination of traditional public health objectives to address social problems not amenable to individual resolution. Taking the tradition a step further, it defines a "public health right" that may justify certain government actions that otherwise appear to impair individual rights. For example, lawmakers are considering whether current regulations on prescription drugs should be loosened to allow terminally ill patients to access drugs before they have been tested and approved for the general public. This Article concludes that expanding access to experimental drugs would violate the public health right to scientific knowledge and new drug development. …

Litigating Groups, Elizabeth Chamblee Burch

Scholarly Works

Large-scale litigation, such as the Vioxx, Zyprexa, and asbestos cases, breeds conflict. Conflicts arise between attorneys and their clients (agency problems), plaintiffs and other plaintiffs (group problems), and plaintiffs' attorneys and other plaintiffs' attorneys (competition problems). Although these cases cannot be certified as class actions, they still proceed en masse to achieve economies of scale and present a credible threat to defendants. Assuming that coordinating and consolidating large-scale litigation is systemically desirable, this Article explores a new approach to removing the group and agency problems that increase aggregate litigation's costs and undermine its normative goals such as fairness, compensation, and …

Nafta Chapter 11 As Supraconstitution, Stepan Wood, Stephen Clarkson

All Faculty Publications

More and more legal scholars are turning to constitutional law to make sense of the growth of transnational and international legal orders. They often employ constitutional terminology loosely, in a bewildering variety of ways, with little effort to clarify their analytical frameworks or acknowledge the normative presuppositions embedded in their analysis. The potential of constitutional analysis as an instrument of critique of transnational legal orders is frequently lost in methodological confusion and normative controversy. An effort at clarification is necessary. We propose a functional approach to supraconstitutional analysis that applies across issue areas, accommodates variation in kinds and degrees of …

Tax Expenditures To Limit The Growth Of Carbon Emissions In Canada: Identification And Evaluation, David G. Duff, E. Ian Wiebe

All Faculty Publications

Unlike the U.S., which relies heavily on tax expenditures as instruments of energy and climate change policy, Canada has introduced very few such tax expenditures, relying instead on voluntary initiatives, direct subsidies, and limited regulatory measures to limit carbon emissions. This paper identifies and evaluates the most prominent tax expenditures in Canada to limit the growth of carbon emissions. As background to this inquiry, Part II reviews Canadian experience with carbon emissions over the last two decades and the limited government response to this growing problem. Part III identifies the most prominent tax expenditures that Canadian governments have introduced in …

Providing Academic Leadership Through The Role Of Senior Lecturer 1 (Teaching) Using The Theme Of 'Sustainable Energy' As An Example, Jim Mcgovern

Articles

An academic leader should lead in their particular area and should love what they are doing. An example of leadership in the area of 'sustainable energy use' is presented that involves leading through identifying and participating in the development of emerging technologies. Excellent academic leadership can be provided by a Senior Lecturer through active research, incorporating the latest developments in student-centred learning in their work and providing example and encouragement for colleagues and learners.

Rating Requirements Of The Upqc To Integrate The Fsig Type Wind Generation To The Grid, N. Jayanti, Malabika Basu, Michael Conlon, Kevin Gaughan

Articles

The ability of wind generation to remain connected to the grid in the event of system faults and dynamic reactive power compensation are two aspects of grid integration, which have received particular attention. The wind driven, fixed-speed induction generator (FSIG) on its own fails to fulfil these requirements of grid integration. The application of a unified power quality conditioner (UPQC) to overcome the grid integration problems of the FSIG is investigated. The role of the UPQC in enhancing the fault ride-through capability of the generator is also investigated under both full and partial terminal voltage restoration. A realistic estimation of …

Relating Fractal Dimension To Branching Behaviour In Filamentous Microorganisms, David Barry, Onwuarolu Ifeyinwa, Shauna Mcgee, Raymond Ryan, Gwilym Williams, Jonathan Blackledge

Articles

The productivity of an industrial fermentation process involving a filamentous microbe is heavily dependent on the morphological form adopted by the organism. The development of systems capable of rapidly and accurately characterising morphology within a given process represents a significant challenge to biotechnologists, as the complex phenotypes that are manifested are often not easily quantified. Conventional parameters employed in these analyses are of limited value, as they reveal little about the specific branching behaviour of the organism, which is an important consideration given the demonstrated link between branching frequency and metabolite production. More recently, fractal geometry has been employed in …

A Covert Encryption Method For Applications In Electronic Data Interchange, Jonathan Blackledge, Dmitry Dubovitskiy

Articles

A principal weakness of all encryption systems is that the output data can be ‘seen’ to be encrypted. In other words, encrypted data provides a ‘flag’ on the potential value of the information that has been encrypted. In this paper, we provide a new approach to ‘hiding’ encrypted data in a digital image.

In conventional (symmetric) encryption, the plaintext is usually represented as a binary stream and encrypted using an XOR type operation with a binary cipher. The algorithm used is ideally designed to: (i) generate a maximum entropy cipher so that there is no bias with regard to any …

Scattering From A Tenuous Random Medium With Applications In Optics, Jonathan Blackledge

Articles

Mathematical models for the scattering of light (and other radiation) tend to fall into two categories based on a weak field condition (single scattering processes) or a strong field condition (multiple scattering processes). In the latter case, the complexity of deterministic models coupled with available solutions often fail to provide results that are of value to engineering systems (e.g. imaging systems). For this reason, multiple scattering problems are often approached using stochastic modelling methods whose foundations lie in random walk theory where the amplitude and phase of the scattered field are taken to conform to an appropriate statistical process and …

Therapeutic Ultrasound Angioplasty: The Risk Of Arterial Perforation. An In Vitro Study, Mark Wylie, Garrett Mcguinness, Graham Gavin

Conference Papers

The use of therapeutic ultrasound delivered via small diameter wire waveguides may represent an emerging minimally invasive approach in the treatment of chronic total occlusions (CTOs), calcified and fibrous plaques. The distal-tip mechanical vibrations (typically 0-210 μm peak-to-peak) have been reported to debulk rigid calcified and fibrous tissues while healthy elastic arterial tissue remains largely unaffected. The risk of arterial (healthy tissue) perforation with energized waveguides is not fully understood. An ultrasonic apparatus capable of delivering a range of wire waveguide distal-tip displacements, up to 80 μm peak-to-peak (p-p), at an operational frequency of 22.5 KHz (+/- 6%) has been …

Ultrasonic Angioplasty: Assessing The Risk Of Arterial Perforation, Mark Wylie, Garrett Mcguinness, Graham Gavin

Conference Papers

Atherosclerosis is a cardiovascular disease that effects large and medium muscular arteries (such as coronary and iliac) and also large elastic arteries (such as aorta) [1]. It causes thickening of the arterial wall and over time can result in a completely blocked artery or chronic total occlusion (CTO). While the majority of atherosclerotic lesions can be attempted by typical Percutaneous Transluminal Coronary Angioplasty (PTCA) such as balloon and stent implantation, calcified CTOs are often problematic as they do not lend themselves to be accessed by the guidewire which is required to implant the balloon and stent. Excessive guidewire pushing force …

The Numerical Comparison Of Flow Patterns And Propulsive Performances For The Hydromedusae Sarsia Tubulosa And Aequorea Victoria, Mehmet Sahin, Kamran Mohseni, Sean Colin

Arts & Sciences Faculty Publications

The thrust-generating mechanism of a prolate hydromedusa Sarsia tubulosa and an oblate hydromedusa Aequorea victoria was investigated by solving the incompressible Navier–Stokes equations in the swirl-free cylindrical coordinates. The calculations clearly show the vortex dynamics related to the thrust-generating mechanism, which is very important for understanding the underlying propulsion mechanism. The calculations for the prolate jetting hydromedusa S. tubulosa indicate the formation of a single starting vortex ring for each pulse cycle with a relatively high vortex formation number. However, the calculations for the oblate jet-paddling hydromedusa A. victoria indicate shedding of the opposite-signed vortex rings very close to each …

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.