Digital Commons Network^™

An Investigation Into The Cardiac Implications Of Bradycardia In Marine Sports Practitioners, Antony Cole

The Plymouth Student Scientist

This study investigated the effect of the mammalian diving reflex (MDR) on the R-R intervals, mean heart rate (MHR) and mean arterial blood pressure (MABP) on 40 healthy subjects. Two groups were compared a group of SCUBA divers and a group of non SCUBA divers. Each group consisted of ten males and ten females. Subjects completed seven protocols: three in air; breathing (BA); apnea (AA); breathing through a snorkel (BSA) and three facially immersed; breathing through a snorkel (23±1°C) (BSI); apnea (35±1°C) (AWW); apnea (23±1°C) (AWR) apnea (10±1°C) (AWC). A negative correlation was observed between diving experience and bradycardia. A …

Tinytermite: A Secure Routing Algorithm, Joshua Lewis Patterson

Masters Theses and Doctoral Dissertations

In this thesis, we introduce TinyTermite. TinyTermite is a novel probabilistic routing algorithm that is secure against selective forwarding and replay attacks. We use suspicion pheromone to build a flexible map of possible compromised neighbors. As suspicion builds up and decays for each neighbor, TinyTermite is able to deal with uncertain stimulus and react properly. TinyTermite is fully implemented on TinyOS based Intel Mote 2 platform and the experiments were done to compare its performance with that of the traditional Termite algorithm. The experimental results show that TinyTermite is significantly more secure against replay and sinkhole attacks by lowering the …

The Phylogeography Of North American Chestnuts And Chinquapins (Castanea Mill., Fagaceae), Meagan A. Binkley

Masters Theses and Doctoral Dissertations

North American Castanea Mill. (Fagaceae) consists of three morphologically variable species: Castanea dentata, Castanea pumila and Castanea ozarkensis. Taxonomy of these species has been complicated by intermediate morphology, similarity in growth habit, and putative naturally occurring hybridization where species' ranges overlap in the southeast. The main goals of the present study were to: 1) determine if genetics reflect the morphological variation observed in southeastern populations of North American Castanea, 2) explore the extent of cpDNA haplotype sharing among these taxa, and 3) map haplotype distribution in relation to morphotaxa. Finally, I wanted to use the information obtained from these analyses …

Preparation Of Carboxylic Acid Functionalized Glycopolymers Through Raft And Post-Polymerization Modification For Biomedical Application, Husnu Alp Alidedeoglu

Dissertations

The primary theme of this dissertation involves the synthesis of well-defined primary amine functionalized polymers, subsequent modification of the polymers to produce novel carboxylic acid functionalized glycopolymers and surface polymerization of these systems utilizing controlled polymerization techniques. Additionally, the synthesis of new water-based allylic copolymer latexes is described. Carbohydrates are natural polymers which possess unlimited structural variations. They carry a huge density of information, and play major roles in recognition events and complex biological operations. For example, hyaluronic acid (HA), an anionic glycosaminoglycan, provides lubricating and cushioning properties in the extracellular matrix and has been found to be involved in …

The Relationship Betweeen Dynamic And Chemical Factors On The Morphology In Aot-Water-Polymer Systems, Jolanta Elzbieta Marszalek

Dissertations

Photopolymerization of reverse microemulsion demonstrates strong influences from dynamical and chemical factors on morphology of formed polymer systems. Upon polymerization the clear microemulsion with nanoscale structures transforms into opaque films with larger aggregates that scatter light. Studied here were microemulsions based on acrylate and on thiol-ene chemistries. The difference in the two reaction mechanisms results in the phase separation occurring at different stages of the material formation. Consequently, the morphology of the material demonstrates distinct dissimilarities in the two systems. In addition, the chemical structure of the monomers promotes these morphological differences. When the microemulsion is composed of acrylate and …

Neural Networks As A Tool For Constructing Continuous Ndvi Time Series From Avhrr And Modis, M. E. Brown, D. J. Lary, A. Vrieling, D. Stathakis, H. Mussa

United States National Aeronautics and Space Administration: Publications

The long term Advanced Very High Resolution Radiometer (AVHRR)- Normalized Difference Vegetation Index (NDVI) record provides a critical historical perspective on vegetation dynamics necessary for global change research. Despite the proliferation of new sources of global, moderate resolution vegetation datasets, the remote sensing community is still struggling to create datasets derived from multiple sensors that allow the simultaneous use of spectral vegetation for time series analysis. To overcome the non-stationary aspect of NDVI, we use an artificial neural network (ANN) to map the NDVI indices from AVHRR to those from MODIS using atmospheric, surface type and sensorspecific inputs to account …

J Am Coll Dent 2008 75 4

Journal of the American College of Dentists

The Journal of the American College of Dentists (JACD) publishes scholarly articles, editorials, essays, and reflections addressing the ethical, professional, and social dimensions of dentistry. The Journal serves as a forum for advancing ethics, professionalism, leadership, and excellence within the dental community. By fostering dialogue across disciplines and perspectives, JACD provides readers with insights that encourage ethical, professional practice, lifelong learning, and service to the public, reinforcing dentistry’s commitment to advancing oral healthcare and the common good.

Evaluating Vendor-Managed Inventory (Vmi) In Non Traditional Environments Using Simulation, Peter Southard, Scott Swenseth

Department of Management: Faculty Publications

This study provided empirical evidence that sufficient economic benefits could be achieved with the use of a technology-enabled vendor-managed inventory (VMI) system in a unique chain such that a firm could justify spending the money necessary to create the infrastructure to support it. The models, while based on a specific type of business, were still generic enough that the results could be generalized to many types of highly distributed, variable demand delivery systems. The study compared the costs of inventory systems used in practice by rural farm cooperatives to possible technology-enabled systems. Fuel delivery data from two agricultural cooperatives in …

Experiments And Models For The Thermal Response Of Railroad Tapered-Roller Bearings, Constantine M. Tarawneh, Kevin D. Cole, Brent M. Wilson, Fadi Alnaimat

Department of Mechanical and Materials Engineering: Faculty Publications

The need to understand and quantify the heat transfer paths within tapered-roller bearings is of great importance in the railroad industry since bearing cup temperature measurement is the primary tool utilized in the removal of distressed bearings from service. Experiments were performed to acquire temperature histories at several locations on a stationary bearing subjected to heat sources imbedded in two rollers. The experimental results were compared to zero- and first-order thermal models to estimate overall heat transfer coefficients from the bearing. The results presented here can be used to explain some of the mechanisms that lead to overheating of tapered-roller …

Effective-Range Theory For An Electron In A Short-Range Potential And A Laser Field, M. V. Frolov, N. L. Manakov, Anthony F. Starace

Anthony F. Starace Publications

The time-dependent effective-range (TDER) theory introduced by Frolov et al. [Phys. Rev. Lett. 91, 053003 (2003)] and used in numerous applications for processes involving a linearly polarized intense laser field is presented in detail for the general problem of an electron, initially bound in a short-range potential, interacting with a laser field of arbitrary polarization. The TDER theory combines the well-known effective-range theory for a weakly bound electron in a short-range potential with the quasistationary, quasienergy state (QQES) or Floquet formulation for an electron interacting with a harmonic, time-dependent field, such as a monochromatic laser field. We present the basic …

A Fundamental Study Of The Pcr Amplification Of Gc-Rich Dna Templates, T. G. Mamedov, Elsje Pienaar, Scott E. Whitney, Joel R. Termaat, G. Carvill, R. Goliath, Anuradha Subramanian, Hendrik J. Viljoen

Hendrik J. Viljoen Publications

A theoretical analysis is presented with experimental confirmation to conclusively demonstrate the critical role that annealing plays in efficient PCR amplification of GC-rich templates. The analysis is focused on the annealing of primers at alternative binding sites (competitive annealing) and the main result is a quantitative expression of the efficiency (η) of annealing as a function of temperature (T_A), annealing period (t_A), and template composition. The optimal efficiency lies in a narrow region of T_A and t_A for GC-rich templates and a much broader region for normal GC templates. To confirm the …

Using Archived Its Data To Measure The Operational Benefits Of A System-Wide Adaptive Ramp Metering System, Robert L. Bertini, Christopher Monsere, Oren Eshel, Soyoung Ahn

Civil and Environmental Engineering Faculty Publications and Presentations

A System-Wide Adaptive Ramp Metering (SWARM) system has been implemented in the Portland, Oregon metropolitan area, replacing the previous pre-timed ramp-metering system that had been in operation since 1981. SWARM has been deployed on six major corridors and operates during the morning and afternoon peak hours. This report presents results of a "before" and "after" evaluation of the performance of two freeway corridors as part of ongoing efforts to measure the benefits of the new SWARM system, as compared to the pre-timed system. The study benefited from using the existing regional data, surveillance and communications infrastructure in addition to a …

Protecting Critical Infrastructure With Games Technology, Adrian Boeing, Martin Masek, Bill Bailey

Australian Information Warfare and Security Conference

It is widely recognised that there is a considerable gap in the protection of the national infrastructure. Trying to identify what is in fact ‘critical’ is proving to be very difficult as threats constantly evolve. An interactive prototyping tool is useful in playing out scenarios and simulating the effect of change, however existing simulators in the critical infrastructure area are typically limited in the visual representation and interactivity. To remedy this we propose the use of games technology. Through its use, critical infrastructure scenarios can be rapidly constructed, tested, and refined. In this paper, we highlight the features of games …

Information Sharing: Hackers Vs Law Enforcement, David P. Biros, Mark Weiser, Jim Burkman, Jason Nichols

Australian Information Warfare and Security Conference

The fields of information assurance and digital forensics continue to grow in both importance and complexity, spurred on by rapid advancement in digital crime. Contemporary law enforcement professionals facing such issues quickly discover that they cannot be successful while operating in a vacuum and turn to colleagues for assistance. However, there is a clear need for greater IT-based knowledge sharing capabilities amongst law enforcement organizations; an environment historically typified by a silo mentality. A number of efforts have attempted to provide such capabilities, only to be met with limited enthusiasm and difficulties in sustaining continued use. Conversely, the hacker community …

Security Metrics - A Critical Analysis Of Current Methods, Manwinder Kaur, Andy Jones

Australian Information Warfare and Security Conference

This paper documents and analyses a number of security metrics currently in popular use. These will include government standards and commercial methods of measuring security on networks. It will conclude with a critical look at some of the problems and challenges faced when using the metrics available today, and also with the development of new metrics.

Privacy And Funeral Protests, Christina E. Wells

North Carolina Law Review

No abstract provided.

Optimization Of A Hardware/Software Coprocessing Platform For Eeg Eyeblink Detection And Removal, Matthew Alan Chaudhuri

Theses

The feasibility of implementing a real-time system for removing eyeblink artifacts from electroencephalogram (EEG) recordings utilizing a hardware/software coprocessing platform was investigated. A software based wavelet and independent component analysis (ICA) eyeblink detection and removal process was extended to enable variation in its processing parameters. Exploiting the efficiency of hardware and the reconfigurability of software, it was ported to a field programmable gate array (FPGA) development platform which was found to be capable of implementing the revised algorithm, although not in real-time. The implemented hardware and software solution was applied to a collection of both simulated and clinically acquired EEG …

Text Cube: Computing Ir Measures For Multidimensional Text Database Analysis, Cindy Xinde Lin, Bolin Ding, Jiawei Han, Feida Zhu, Bo Zhao

Research Collection School Of Computing and Information Systems

Since Jim Gray introduced the concept of ”data cube” in 1997, data cube, associated with online analytical processing (OLAP), has become a driving engine in data warehouse industry. Because the boom of Internet has given rise to an ever increasing amount of text data associated with other multidimensional information, it is natural to propose a data cube model that integrates the power of traditional OLAP and IR techniques for text. In this paper, we propose a Text-Cube model on multidimensional text database and study effective OLAP over such data. Two kinds of hierarchies are distinguishable inside: dimensional hierarchy and term …

Phylogeography Of The Bigeye Chub Hybopsis Amblops (Teleostei: Cypriniformes): Early Pleistocene Diversification And Post‐Glacial Range Expansion, Peter B. Berendzen, Tony Gamble, Andrew M. Simons

Biological Sciences Faculty Research and Publications

The bigeye chub, Hybopsis amblops, is a member of the Central Highlands ichthyofauna of eastern North America. Phylogenetic analyses of the H. amblops species group based on a 1059 bp fragment of the mitochondrial DNA cytochrome b gene did not recover a monophyletic group. The inclusion of Hybopsis hypsinotus in the species complex is questionable. Within H. amblops, five strongly supported clades were identified; two clades containing haplotypes from the Ozark Highlands and three clades containing haplotypes from the Eastern Highlands and previously glaciated regions of the Ohio and Wabash River drainages. Estimates of the timing of divergence …

Efficient Client-To-Client Password Authenticated Key Exchange, Yanjiang Yang, Feng Bao, Robert H. Deng

Research Collection School Of Computing and Information Systems

With the rapid proliferation of client-to-client applications, PAKE (password authenticated key exchange) protocols in the client-to-client setting become increasingly important. In this paper, we propose an efficient client-to client PAKE protocol, which has much better performance than existing generic constructions. We also show that the proposed protocol is secure under a formal security model.

Inside Unlv, Diane Russell, Michelle Mouton, Mamie Peers, Shane Bevell

Inside UNLV

No abstract provided.

The Viability Of The Fair Tax, Jonathan M. Clark

Senior Honors Theses

This thesis begins by investigating the current system of federal taxation in the United States and examining the flaws within the system. It will then deal with a proposal put forth to reform the current tax system, namely the Fair Tax. The Fair Tax will be examined in great depth and all aspects of it will be explained. The objective of this paper is to determine if the Fair Tax is a viable solution for fundamental tax reform in America. Both advantages and disadvantages of the Fair Tax will objectively be pointed out and an educated opinion will be given …

Self-Talk And Cognitive Strategy: Exploring Relationships Between Self-Talk, Cognitive Strategy, And Factors That Cause Change, Justin Sebens

Communication & Leadership Dissertations and Theses

Appropriate use of self-talk and cognitive strategy has been shown to improve individual performance on a variety of tasks by increasing confidence, focus, and awareness. Likewise, depending on its use, self-talk and cognitive strategy has also been shown to be detrimental to performance. Little research has been undertaken to explore the relationship between self-talk and cognitive strategy and the factors that precipitate changes between the two. To fill this gap, this study examined long distance runners to determine the factors that cause change in self-talk and cognitive strategy as well as the relationship between the two if change occurs. Additionally, …

The Future Of General Education At John Jay College Of Criminal Justice, John Jay College Of Criminal Justice, John Jay College Of Criminal Justice - Task Force On General Education

Reports and Publications from John Jay College

The Task Force on General Education was convened in the Spring of 2007 by Jane Bowers, who was then Dean of Undergraduate Studies and is now Provost and Senior Vice President for Academic Affairs. Dr. Bowers charged the group to study General Education at John Jay, at our sister CUNY campuses, and at colleges and universities around the country and to produce a report to the community that would help us to assess the status of our nearly four-decades-old General Education program in the contexts of a national General Education reform movement and a parallel CUNY-wide initiative. This report is …

Synthesis Of A Dirhodium Tetraphosphine Catalyst And The Effect Of Various H2/Co Ratios On The Catalyst, Christina Joanne Sweeney

Honors Capstones

No abstract provided.

Lsuhsc Facilities Biweekly Update: December 2008, Lsuhsc Property And Facilities Management

LSUHSC Facilities Biweekly Updates: 2008

LSUHSC Facilities Biweekly Updates from December 5 and 19, 2008.

These updates describe damage and a timeline of repairs at the LSU Health Sciences Center - New Orleans campus due to Hurricane Katrina which made landfall August 29, 2005.

Lsuhsc Facilities Daily Update: December 2008, Lsuhsc Property And Facilities Management

LSUHSC Facilities Daily Updates: 2008

LSUHSC Dailly Facilities Updates from December 2008. These updates describe damage and a timeline of repairs at the LSU Health Sciences Center - New Orleans campus due to Hurricane Katrina which made landfall August 29, 2005.

Biogeography-Based Optimization, Daniel J. Simon

Electrical and Computer Engineering Faculty Publications

Biogeography is the study of the geographical distribution of biological organisms. Mathematical equations that govern the distribution of organisms were first discovered and developed during the 1960s. The mindset of the engineer is that we can learn from nature. This motivates the application of biogeography to optimization problems. Just as the mathematics of biological genetics inspired the development of genetic algorithms (GAs), and the mathematics of biological neurons inspired the development of artificial neural networks, this paper considers the mathematics of biogeography as the basis for the development of a new field: biogeography-based optimization (BBO). We discuss natural biogeography and …

Optimal And Heuristic Resource Allocation Policies In Serial Production Systems, Ramesh Arumugam

All Theses

We have studied the optimal server allocation policies for a tandem queueing system under different system settings. Motivated by an industry project, we have studied a two stage tandem queueing system with arrival to the system and having two flexible servers capable of working at either of the stations. In our research, we studied the system under two different circumstances: modeling the system to maximize throughput without cost considerations, modeling the system to include switching and holding costs along with revenue for finished goods. In the maximizing throughput scenario, we considered two different types of server allocations: collaborative and non-collaborative. …

The Courage And Endurance To Remain In His Own Country And Fight The Battle Out: Donald Davidson And The South, 1893-1968, Michael Sisk

All Theses

This thesis examines the life of Donald Grady Davidson (1893-1968) and the forces - external and internal - that drove him to contribute to I'll Take My Stand: The South and the Agrarian Tradition, in 1930 and remain an avid apologist for Southern Agrarianism for the remainder of his life. Davidson, who began his literary career as a devotee of modernism, opposed much of his native culture yet suddenly changed directions around 1925 and embraced the distinctiveness of his Southern heritage. This thesis argues that events surrounding the Scopes Trial in 1925 caused Davidson to reevaluate his position on the …