Digital Commons Network^™

Identification Of Two Genes, Sll0804 And Slr1306, As Putative Components Of The Co2-Concentrating Mechanism In The Cyanobacterium Synechocystis Sp. Strain Pcc 6803, Shulu Zhang, Kevin W. Spann, Laurie K. Frankel, James V. Moroney, Terry M. Bricker

Faculty Publications

Insertional transposon mutations in the sll0804 and slr1306 genes were found to lead to a loss of optimal photoautotrophy in the cyanobacterium Synechocystis sp. strain PCC 6803 grown under ambient CO2 concentrations (350 ppm). Mutants containing these insertions (4BA2 and 3ZA12, respectively) could grow photoheterotrophically on glucose or photoautotrophically at elevated CO2 concentrations (50,000 ppm). Both of these mutants exhibited an impaired affinity for inorganic carbon. Consequently, the Sll0804 and Slr1306 proteins appear to be putative components of the carbon-concentrating mechanism in Synechocystis sp. strain PCC 6803. Copyright © 2008, American Society for Microbiology. All Rights Reserved.

A Holistic Scada Security Standard For The Australian Context, Christopher Beggs

Australian Information Warfare and Security Conference

Supervisory Control and Data Acquisition (SCADA) systems which control Australia’s critical infrastructure are currently demonstrating signs of vulnerabilities as they are being interconnected to corporate networks, essentially exposing them to malicious threats. This paper discusses the vulnerabilities associated with SCADA systems, as well as discussing various SCADA standards and initiatives that have been developed in recent years to mitigate such threats. The paper presents the requirement for a holistic SCADA security standard that is practical and feasible for each SCADA industry sector.

Visualisation Of Critical Infrastructure Failure, W D. Wilde, M J. Warren

Australian Information Warfare and Security Conference

The paper explores the complexity of critical infrastructure and critical infrastructure failure (CIF), real life examples are used to discuss the complexity involved. The paper then discusses what Visualisation is and how Visualisation can be applied to a security situation, in particular critical infrastructure. The paper concludes by discussing the future direction of the research.

Five Decades Of Agricultural Policies In Nigeria: What Roles Has Statistics Played?, Akinboyo O. I

Bullion

All over the country and internationally, the publications of the Central Bank of Nigeria (CBN) such as the Annual Report and Statement of Accounts, the Statistical Bulletin, Economic and Financial Review, the Bullion and Nigeria: Major Economic and Banking Indicators and those of the National Bureau of Statistics (NBS) have become a veritable source of data and reference materials on Nigeria. Without basic i n f o r m a t i o n o n e c o n o m i c developments, it would be very difficult for policy makers to assess economic performances. The f o …

Total Station Mapping: Practical Examples From Alta And Baja California, Tsim D. Schneider, Lee M. Panich

Faculty Publications

The use of electronic total data stations for mapping archaeological sites is examined through two California case studies. Mission Santa Catalina, located in the high desert of Baja California, and a cluster of three shell mounds, located in a forest in the San Francisco Bay area, represent two different examples of organizing and implementing a mapping program using a total station. In this article, we will discuss the basic use of total stations for mapping archaeological sites and provide an overview of the process of creating digital maps from data obtained using a total station. The two case studies will …

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 …

Blockbuster Movies And What They Teach Us About Women In American Society, Nichole Bogarosh

Communication & Leadership Dissertations and Theses

Films are important messengers of societal values and norms. Content analysis of 12 blockbuster films from 1957 to 2007 reveals patterns of discrimination against women in film. Six categories of inequality and discrimination were documented dealing with women as main characters in these blockbuster films, women’s roles portraying the characters in professional jobs, women in film being decision-makers, women in the category of damsels in distress, women as sex objects, and derogatory actions and comments towards women.

Employeer And Recruiter Use Of Social Networking Websites As A Candidate Screening Tool, Janelle L. Harrison

Communication & Leadership Dissertations and Theses

In today’s changing job market, employers and recruiters are looking to new technological methods of evaluating potential job candidates. One of these technologies is the use of social networking websites. This thesis examines the frequency to which this practice is used and also the specific behaviors looked for when checking candidate profiles. It also investigates the awareness and opinions of job seekers who have social networking profiles. Data analysis of the employer/recruiter questionnaire revealed that most employers and recruiters admit to using social networking websites as a candidate evaluation tool at least some of the time. Behaviors examined were varied …

Dynamic Analysis Of Less-Than-Truckload Shipments And Test Method To Simulate This Environment, Sher Paul Singh, E. Joneson, Jay Singh, G. Grewal

Industrial Technology and Packaging

This paper provides results from a comprehensive data measurement study that analyzed the vibration dynamics produced inside the trailers used for less-than truckload (LTL) shipments. The trailers used for this segment of the package transportation environment are very different in size and suspension than those used for full truckload shipments. This study measured the vertical, lateral and longitudinal vibration inside a trailer as a function of road surface. In addition, the study developed a video showing freight movement inside the trailer to determine physical displacement and shifting of the loads. A set of recommendations was developed to safely load and …

The Chinese Scramble In East Africa: The Growing Interest Of China In Uganda, Kenya, And Tanzania, Ara Jannie Jo

Honors Capstones

No abstract provided.

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.

Checkup, Lehigh Valley Health Network

Checkup

No abstract provided.

From Elastic Deformation To Terminal Flow Of A Monodisperse Entangled Melt In Uniaxial Extension, Yangyang Wang, Shi-Qing Wang

College of Polymer Science and Polymer Engineering

Using a well-entangled monodisperse styrene-butadiene random-copolymer (SBR) melt as a model system, we illustrate generic features of uniaxial extension behavior that may be shared by all well-entangled thermoplastic and elastomeric materials. Depending on the imposed extensional rate, the same sample may behave like a viscous liquid or an elastic "solid." Analogous to the recently revealed shear inhomogeneity, the SBR melt inevitably undergoes cohesive failure in the form of sample breakage whenever the Weissenberg number is much greater than unity, making it challenging to reach steady state. In the elastic deformation regime where the external deformation rate is faster than Rouse …

First Measurement Of The Fraction Of Top-Quark Pair Production Through Gluon-Gluon Fusion, T. Aaltonen, J. Adelman, T. Akimoto, M. G. Albrow, B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, M. Aoki, G. Apollinari, A. Apresyan, T. Arisawa, A. Artikov, W. Ashmanskas, A. Attal, A. Aurisano, F. Azfar, P. Azzi-Bacchetta, P. Azzurri, N. Bacchetta, W. Badgett, A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, S. Baroiant, V. Bartsch

Faculty Publications

We present the first measurement of σ(gg→tt̄)/ σ(pp̄→tt̄). We use 0.96fb-1 of s=1.96TeV pp̄ collision data recorded with the CDF II detector at Fermilab. Using charged particles with low transverse momentum in tt̄ events, we find σ(gg→ tt̄)/σ(pp̄→tt̄)=0.07±0.14(stat)±0. 07(syst), corresponding to a 95% confidence level upper limit of 0.33, in agreement with the standard model next-to-leading-order prediction of 0.15±0.05. © 2008 The American Physical Society.

Tfiiic Binding Sites Function As Both Heterochromatin Barriers And Chromatin Insulators In Saccharomyces Cerevisiae, Tiffany A. Simms, Sandra L. Dugas, Jason C. Gremillion, Megan E. Ibos, M. Nicole Dandurand, Tasha T. Toliver, Daniel J. Edwards, David Donze

Faculty Publications

Chromosomal sites of RNA polymerase III (Pol III) transcription have been demonstrated to have "extratranscriptional" functions, as the assembled Pol III complex can act as chromatin boundaries or pause sites for replication forks, can alter nucleosome positioning or affect transcription of neighboring genes, and can play a role in sister chromatid cohesion. Several studies have demonstrated that assembled Pol III complexes block the propagation of heterochromatin-mediated gene repression. Here we show that in Saccharomyces cerevisiae tRNA genes (tDNAs) and even partially assembled Pol III complexes containing only the transcription factor TFIIIC can exhibit chromatin boundary functions both as heterochromatin barriers …

Host-Pathogen Interactions, Insect Outbreaks, And Natural Selection For Disease Resistance, Bret D. Elderd, Jonathan Dushoff, Greg Dwyer

Faculty Publications

The theory of insect population dynamics has shown that heterogeneity in natural-enemy attack rates is strongly stabilizing. We tested the usefulness of this theory for outbreaking insects, many of which are attacked by infectious pathogens. We measured heterogeneity among gypsy moth larvae in their risk of infection with a nucleopolyhedrovirus, which is effectively heterogeneity in the pathogen's attack rate. Our data show that heterogeneity in infection risk in this insect is so high that it leads to a stable equilibrium in the models, which is inconsistent with the outbreaks seen in North American gypsy moth populations. Our data further suggest …

Impossibility Of Extending Pólya's Theorem To "Forms" With Arbitrary Real Exponents, Charles N. Delzell

Faculty Publications

Pólya proved that if a form (homogeneous polynomial) with real coefficients is positive on the nonnegative orthant (except at the origin), then it is the quotient of two real forms with no negative coefficients. While Pólya's theorem extends, easily, from ordinary real forms to "generalized" real forms with arbitrary rational exponents, we show that it does not extend to generalized real forms with arbitrary real (possibly irrational) exponents. © 2008 Elsevier B.V. All rights reserved.

Automatic Identification Amyloids Of Alzheimer Mri, John Jenq

Department of Computer Science Faculty Scholarship and Creative Works

It is estimated that every 72 seconds, someone in America develops Alzheimer's disease. With this trend and if no cure find, experts predict by mid-century every 33 second, one American will develops Alzheimer's disease. One of the specific features of Alzheimer's disease is the accumulation of Beta-Amyloid in the brain. Early detection of the Amyloid may prevent or progress of the Alzheimer's disease. In this report, we try to use region growing method to detect the Amyloid in the mice brain MRI. Copyright © 2008 by the International Institute of Informatics and Systemics.

Will There Ever Be Consensus On Cs1?, Robert M. Siegfried, David Chays, Katherine G. Herbert

Department of Computer Science Faculty Scholarship and Creative Works

The choice of programming language, the approach by which students are taught and the software tools made available to students have been controversial issues in many ways. While there once was a consensus of some sort within the computer science education community, it is much more difficult to find common ground among those of us who teach introductory programming courses. The literature is explored and answers sought to the question of which language is optimum in teaching novice programmers, as well as the approach that ought to be used. Finally, the question of whether a consensus can be reached is …

Traditional Practice For Oral Health Care In Nandurbar District Of Maharashtra, India, S. B. Badgujar, R. T. Mahajan, S. B. Kosalge

Ethnobotanical Leaflets

An ethnobotanical study was conducted from January 2006 to October 2008 to investigate the uses of medicinal plants for oral health care by different aborigines, such as Bhills, Gavits, Kokanis, Mavachis, Valvis, Pawras, Koknas and Vasaves, in the Nandurbar district of Maharashtra, India. Data were collected by interviewing native people, mainly elderly – engaged in farming and stock rising activities, housewives and local traditional medicinemen of different villages. The investigation revealed that a total 20 claims were obtained as distributed in 18 genera belonging to 14 families to treat various diseases and disorders of oral cavity, particularly in tooth decay. …

Investigations On Antibacterial Activity Of Leaf Extracts Of Azadirachta Indica A. Juss (Meliaceae): A Traditional Medicinal Plant Of India, C. Rajasekaran Et Al.

Ethnobotanical Leaflets

The present study was carried out to screen and evaluate antimicrobial activity of leaf extracts of Azadirachta indica A. Juss. Petroleum ether, dichloromethane, chloroform, ethanol and aqueous extract of leaves of A. indica were tested against selected Gram positive and Gram negative bacterial species. Phytochemical leaf extracts of A. indica exhibited significant anti-bacterial activity against all the test microorganisms. However, inhibitory activities of the leaf extracts were both organism and solvent dependent. The leaf extracts limited the growth of both Gram-positive and Gram-negative bacterial species tested. Among the different extracted used in the study, ethanolic and dichloromethane leaf extracts of …

A Model To Use Denied Internet Traffic To Indirectly Discover Internal Network Security Problems, Chet Langin, Hongbo Zhou, Shahram Rahimi

Computer Science Publications

We propose a model for using firewall log entries of denied inbound Internet traffic for indirect discovery of local IP addresses that have security problems. This method is used successfully to discover two computers on the network of Southern Illinois University which were infected with malicious feral software, as well as two more IP addresses on the university network with other security problems.

Biopesticidal Effect Of Leaf Extracts Of Catharanthus Roseus L (G) Don. On The Larvae Of Gram Pod Borer - Helicoverpa Armigera (Hübner), S. Ramya Et Al.

Ethnobotanical Leaflets

Biopesticides have gained prominence as potential plant protecting agents. Biological activity of solvent extracts of Catharanthus roseus L (G) Don. were evaluated against larvae of gram pod borer Helicoverpa armigera (Lepidoptera: Noctuidae). Antifeedant and larvicidal activity of methanol crude, petroleum ether, methanol fraction and ethyl acetate fraction of leaf extracts of C. roseus were estimated in the present study. Preliminary screening of the extracts was tested at a concentration of 1,000 ppm. The larval mortality was observed after 24h of exposure to the extracts. All extracts exhibited moderate larvicidal effects. However, highest larval mortality was observed in ethyl acetate fraction …

In Vitro Evaluation Of Antibacterial Activity Of Phytochemical Extracts From Leaves Of Aegle Marmelos (L.) Corr. (Rutaceae), C. Rajasekaran Et Al.

Ethnobotanical Leaflets

The present study was carried out to screen and evaluate the antimicrobial activity of leaf extracts from Aegle marmelos (L.) Corr. Petroleum ether, Dichloromethane, Chloroform, Ethanol and Aqueous extract of the leaves were tested against selected Gram positive and Gram negative bacteria. Results depict that phytochemical extracts of A. marmelos exhibited significant anti-bacterial activity. However, the inhibitory activity was found to be both organism and solvent dependent. Ethanol and chloroform leaf extracts of Aegel marmelos were found to be more active towards the bacterial species tested. The leaf extracts inhibited the growth of both Gram-positive and Gram-negative bacterial species. Further, …

Antimicrobial Activity Of Aqueous Extracts Of Bark, Root, Leaves And Fruits Of Terminalia Arjuna Wight & Arn., S. Ramya Et Al.

Ethnobotanical Leaflets

The present study was carried out to evaluate the antibacterial activity of bark, stem, root, leaf and fruit extracts from Terminalia arjuna on selected Gram positive and Gram negative bacterial strains. Aqueous extracts were used to evaluate the antibacterial activity. Phytochemical extracts from different parts of the plant exhibited significant anti-bacterial activity against tested microbial strains; however, inhibitory activities of the extracts were plant part and test organism dependent. Phytochemical extracts limited the growth of both Gram-positive and Gram-negative bacterial species tested however, Micrococcus luteus was less sensitive to the aqueous extracts. The results show that antimicrobial activity of phytochemical …

Decision Combining In Relay Networks, Sharmin R. Ara, R. Viswanathan

Conference Proceedings

We consider non-coherent detection of M-ary FSK modulated signals transmitted over a slow, Rayleigh fading channel in a wireless relay network. The network consists of a single source-destination pair and a number of relays (L), which employ cooperative diversity. Performances of a counting rule and square law combiner are studied. We derive closed form expressions for probabilities of error for equal relay channel average SNR. For unequal relay channel SNRs, we resort to Monte Carlo simulations to estimate the error probabilities. We examine different combinations of M and L for a range of average SNR values. Although the …

December 2008 (Vol.32, No.12)

Research Matters

No abstract provided.

The Bell System Divestiture: Background, Implementation, And Outcome, Joseph H. Weber

Federal Communications Law Journal

"The Enduring Lessons of the Breakup of AT&T: A Twenty-Five Year Retrospective."' Conference held at the University of Pennsylvania Law School on April 18-19, 2008.

By 1982, the Bell System had operated an integrated telecommunications network connecting almost everyone in the United States for almost 100 years. That system had been designed and operated as a monopoly, but by the 1960s, new technologies were being developed which led to pressure to allow competitive entry. After many incremental changes, the Bell System divestiture--complete separation of long-distance service and manufacturing fiom local service provision-was finally adopted as a way of implementing this …

The Decline And Fall Of At&T: A Personal Recollection, Richard A. Posner

Federal Communications Law Journal

"The Enduring Lessons of the Breakup of AT&T: A Twenty-Five Year Retrospective."' Conference held at the University of Pennsylvania Law School on April 18-19, 2008.

In his luncheon talk at the conference, presented here in slightly revised form, Judge Posner discusses his personal involvement with the events that led up the Justice Department's major antitrust suit against AT&T that culminated in the breakup of the telephone monopoly. The stages of his involvement included participation in the work of President Johnson's Task Force on Communications Policy, consulting for AT&T in the lawsuit itself, and his negative advice to the chairman of …