Digital Commons Network^™

Nutrient Cycles And Marine Microbes In A Co2-Enriched Ocean, David A. Hutchins, Margaret R. Mulholland, Feixue Fu

OES Faculty Publications

The ocean carbon cycle is tightly linked with the cycles of the major nutrient elements nitrogen, phosphorus, and silicon. It is therefore likely that enrichment of the ocean with anthropogenic CO2 and attendant acidification will have large consequences for marine nutrient biogeochemistry, and for the microbes that mediate many key nutrient transformations. The best available evidence suggests that the nitrogen cycle may respond strongly to higher CO2 through increases in global N2 fixation and possibly denitrification, as well as potential decreases in nitrification. These trends could cause nitrification to become a nitrogen cycle "bottleneck," by increasing the flux of N2 …

Design, Simulation, And Fabrication Of A Flow Sensor For An Implantable Micropump, Matthew J. Waldron

Theses

The design, simulation, and fabrication of a flow sensor to be integrated into an implantable micropump is presented. The flow sensor operates by the method of thermal anemometry, in which heat is dissipated from a resistive element held in the flow of the fluid. The rate at which heat is carried away is dependent on the flow rate and is directly related to the thermal conductance. A control circuit utilizing the constant-temperature anemometry mode of operation is used to generate a change in voltage in response to change in thermal conductance, and subsequently, flow rate. A mathematical expression describing the …

Dec. 2009

NASIG Newsletter

No abstract provided.

Crosscutting Issues In International Transformation: Interactions And Innovations Among People, Organizations, Processes, And Technology, Derrick J. Neal, Henrik Friman, Ralph Doughty, Linton Wells Ii

Books

This book is a compilation of papers presented at the International Transformation Conference in Stockholm, Sweden on June 2-3, 2009. The conference was hosted by the Swedish Defence Research Agency, FOI. The papers are organized according to the categories of culture, interagency, transformation initiatives, leadership, and adaptive organizations.

The complexities of the task make definitions of transformation a challenge and often open to debate. The unpredictable nature of the future international security environment defies a tightly bounded definition so the International Transformation Chairs have adopted an inclusive description: “Transformation is a process that shapes the changing nature of competition and …

Enabling Secure Secret Updating For Unidirectional Key Distribution In Rfid-Enabled Supply Chains, Shaoying Cai, Tieyan Li, Changshe Ma, Yingjiu Li, Robert H. Deng

Research Collection School Of Computing and Information Systems

In USENIX Security 08, Juels, Pappu and Parno proposed a secret sharing based mechanism to alleviate the key distribution problem in RFID-enabled supply chains. Compared to existing pseudonym based RFID protocols, the secret sharing based solution is more suitable for RFID-enabled supply chains since it does not require a database of keys be distributed among supply chain parties for secure ownership transfer of RFID tags. However, this mechanism cannot resist tag tracking and tag counterfeiting attacks in supply chain systems. It is also not convenient for downstream supply chain parties to adjust the size of RFID tag collections in recovering …

A Robust Damage Assessment Model For Corrupted Database Systems, Ge Fu, Hong Zhu, Yingjiu Li

Research Collection School Of Computing and Information Systems

An intrusion tolerant database uses damage assessment techniques to detect damage propagation scales in a corrupted database system. Traditional damage assessment approaches in a intrusion tolerant database system can only locate damages which are caused by reading corrupted data. In fact, there are many other damage spreading patterns that have not been considered in traditional damage assessment model. In this paper, we systematically analyze inter-transaction dependency relationships that have been neglected in the previous research and propose four different dependency relationships between transactions which may cause damage propagation. We extend existing damage assessment model based on the four novel dependency …

Adaptive Type-2 Fuzzy Maintenance Advisor For Offshore Power Systems, Zhaoxia Wang, C. S. Chang, Fan Yang, W. W. Tan

Research Collection School Of Computing and Information Systems

Proper maintenance strategies are very desirable for minimizing the operational and maintenance costs of power systems without sacrificing reliability. Condition-based maintenance has largely replaced time-based maintenance because of the former's potential economic benefits. As offshore substations are often remotely located, they experience more adverse environments, higher failures, and therefore need more powerful analytical tools than their onshore counterpart. As reliability information collected during operation of an offshore substation can rarely avoid uncertainties, it is essential to obtain consistent estimates of reliability measures under changing environmental and operating conditions. Some attempts with type-1 fuzzy logic were made with limited success in …

On The Untraceability Of Anonymous Rfid Authentication Protocol With Constant Key-Lookup, Bing Liang, Yingjiu Li, Tieyan Li, Robert H. Deng

Research Collection School Of Computing and Information Systems

In ASIACCS'08, Burmester, Medeiros and Motta proposed an anonymous RFID authentication protocol (BMM protocol [2]) that preserves the security and privacy properties, and achieves better scalability compared with other contemporary approaches. We analyze BMM protocol and find that some of security properties (especial untraceability) are not fulfilled as originally claimed. We consider a subtle attack, in which an adversary can manipulate the messages transmitted between a tag and a reader for several continuous protocol runs, and can successfully trace the tag after these interactions. Our attack works under a weak adversary model, in which an adversary can eavesdrop, intercept and …

The Cartography Of National Humiliation And The Emergence Of China’S Geobody, William A. Callahan

Research Collection School of Social Sciences

Maps are an important site of the production and consumption of the national image. This essay examines modern Chinese maps to show how the very material borders between foreign and domestic space are the outgrowth of the symbolic workings of historical geography and the conventions of Chinese cartography. These maps do much more than celebrate the extent of Chinese sovereignty; they also mourn the loss of national territories through a cartography of national humiliation. The goal of this essay is to shift our attention from the diplomatic issues of international borders to examine what Chinese maps of China can tell …

Effective Principal Leadership Behaviors And Ayp Attainment: An Examination Of Distinguished And Needs Improvement Middle Schools In Georgia, Christopher M. Matthews

College of Graduate Studies: Theses & Dissertations

The purpose of this study was to examine effective principal leadership behaviors in relation to the AYP attainment of middle schools in Georgia. The relationship was examined through analyses of teachers' ratings of principals' leadership behaviors via an e-mailed instrument. The instrument contained 32 specific leadership behaviors linked to the 11 Marzano et al.'s leadership responsibilities with the highest correlation to student achievement. Three major research questions guided the inquiry of the study. First, the study investigated the presence of the leadership behaviors in distinguished and needs improvement middle schools in Georgia. Secondly, the study investigated whether there were differences …

A Qualitative Study Of The Experiences With Administrative Support Of Veteran Teachers At The Secondary Level, Rachel Hendrix Nobles

College of Graduate Studies: Theses & Dissertations

Studies have revealed that working conditions play an integral role in teachers' decisions to remain in the profession or in their current school. Additionally, studies have found that administrative support is a factor frequently cited by teachers as a component of their working conditions. Administrators are in a position allowing them to directly influence the working conditions of teachers and indirectly influence the retention of teachers. Therefore, a need existed for a deeper more complete understanding of exactly how administrator - teacher relations at the secondary level influence veteran regular education teachers' perceptions of support. In this study, the researcher …

Attention-Deficit/Hyperactivity Disorder And Sleep Disturbances: Consideration Of Familial Influences, Gretchen Stuckert Noble

All-Inclusive List of Electronic Theses and Dissertations

The present study examined the extent to which parenting influences problems with sleep in children referred for an evaluation of Attention-Deficit/Hyperactivity Disorder (ADHD). Data was collected from parents and/or legal guardians of sixty-three 4- to 12-year old children referred for assessment at an ADHD Evaluation Clinic located at a Midwestern university. Previous literature linking sleep problems to ADHD has typically derived from community and pediatric sleep clinic samples and has largely overlooked children with sub-clinical sleep impairments and/or those whose sleep problems stem from alternate etiologies. More than 60% of parents/caregivers in the current study reported significant child sleep difficulties. …

Conservation Genetics And Systematics Of Several Turtles Species In The Southeastern United States, Joshua Robert Ennen

Dissertations

Chelonians (i.e., turtles) are an imperiled group of reptiles with about 66% of the recognized species listed as threatened by the IUCN. Most chelonian species have a unique set of life history traits (i.e., longevity, delayed sexual maturity, and low juvenile survivorship), which makes their populations exceedingly sensitive to increases in adult and juvenile moralities. With numerous anthropogenic effects (e.g., habitat alteration, exploitation, and over harvesting) negatively influencing mortality rates, chelonians have experienced global precipitous declines and extinctions.

This dissertation focuses on species within two chelonian genera, Gopherus and Graptemys. Although these two genera are vastly different ecologically, they are …

Holiday Concert, Leslie J. Blackwell, Alison Mann, Adam Kirkpatrick, Sam Skelton, Sherri Barrett, Sarah Heagy

Bailey School of Music Concert Programs

Kennesaw State University School of Music presents: Holiday Concert.

Turning The Faucet Back On: The Future Of Mccain-Feingold's Soft-Money Ban After Davis V. Federal Election Commission, Kevin J. Madden

American University Law Review

No abstract provided.

Nappy Roots, Split Ends, And New Growth: An Autobiographical Narrative Inquiry Into The Experiences Of A Black Female Educator, No Lye, Michel Linee Mitchell

College of Graduate Studies: Theses & Dissertations

Using autobiographical narrative inquiry, I explore the ways that race, gender, class, culture, and place shape who I was and how I became who I am as a Black woman educator. Family members, colleagues, community members, and students are the main characters in my stories. Building on the works of Collins (2000), Cross (1991), Gay (2000), He (2003), hooks (2000), and Tatum (1997), I use Black women hair metaphors such as nappy roots, split ends, new growth, and no lye to comb through the phases of my life. For the purpose of protecting the characters and myself in my stories, …

Critical Narrative Of Multiracial Women's Personal Journey: Negotiating The Intersectionallity Of Race And Gender Issues In A Monoracial Paradigm, Geralda Silva Nelson

College of Graduate Studies: Theses & Dissertations

The aim of this study was to examine how three women of color, mothers of Multiracial children, experience gender and racial identity issues in the context of United States; explore their choice of racial indicator for their children and the impact that raising multiracial children would have on their own racial identity. This study was informed by critical race feminist thought, framed by qualitative inquiry and oral history as research methodology. Throughout this study I have attempted to demonstrate that gender and race are significant factors in these three women's lived experiences. The participants' accounts revealed how different aspects of …

Bias In Closed Population Capture-Recapture, Candace M. Lynn

College of Graduate Studies: Theses & Dissertations

Our primary question was the effect of departures from assumptions on population estimates obtained using three maximum likelihood population size estimators: M0 (all individuals have the same capture probability on all occasions), Mb (behavior is affected by prior capture) and Mt (all individuals have the same capture probability that varies by occasion). After examining the initial results and observing substantial negative bias (underestimates), we attempted to model the bias for M0 and Mb capture scenarios as these situations had consistent patterns. The Mt scenario with its erratic behaviors was not modeled. We noted that M0 and Mt performed equally well …

An Assessment Of Perceived Crop Damage In A Tanzanian Village Impacted By Human-Elephant Conflict And An Investigation Of Deterrent Properties Of African Elephant (Loxodonta Africana) Exudates Using Bioassays, Rebekah R. Karimi

College of Graduate Studies: Theses & Dissertations

Human-elephant conflict (HEC) is on the rise in East Africa as habitat that was formerly occupied by elephants and other wildlife is being converted to farmland. African elephants (Loxodonta africana) will raid agricultural fields to feed on crops, and many agriculturalists attribute the majority of their crop damage to elephants. The first two objectives of this study were to evaluate the accuracy of this perception by comparing perceived crop damage by elephants and other factors to the actual, quantified crop damage, as well as to evaluate the effectiveness of deterrent methods against wildlife used by local farmers in a Tanzanian …

Effects Of Testosterone And Training On Performance In The Non-Territorial Lizard (Aspidoscelis Sexlineata), Jennifer L. O'Connor

College of Graduate Studies: Theses & Dissertations

In territorial lizards, testosterone (T) has been suggested as a possible mediator of seasonal increases in endurance and bite force, which are important for maintaining territories and winning male-male competitions. Aspidoscelis sexlineata, a non-territorial lizard, has elevated bite force and endurance during the breeding season when T levels are elevated (Gowan 2008). Here, I investigated the effects of experimentally elevated T levels on bite force and endurance. Tonic-release implants elevated T levels for 2 weeks; however, they failed to increase performance during that time. Endurance decreased for all lizards in the lab study; suggesting that captivity negatively affects endurance. A …

Closed-Form Expression Of Self/Mutual Power-Bus Impedances In A Finite Circular Plate Pair, Yao Jiang Zhang, Er Ping Li, Jun Fan

Electrical and Computer Engineering Faculty Research & Creative Works

The drawbacks of conventional power-bus impedance, defined as an average Green's function integration over port areas, are discussed. a new definition is proposed in terms of cylindrical waves. the equivalence of the new definition and the conventional one is proved in the case of electrically small ports. Addition theorems of cylindrical waves are used to derive an analytical expression of power-bus impedance between ports in a circular plate pair with perfectly electric/magnetic conductor (PEC/PMC) boundaries as well as non-reflective perfectly matched layer (PML) for infinite plate pair. Numerical method has been used to validate the analytical expression derived.

Bio-Inspired Node Localization In Wireless Sensor Networks, Raghavendra V. Kulkarni, Ganesh K. Venayagamoorthy, Maggie X. Cheng

Electrical and Computer Engineering Faculty Research & Creative Works

Many applications of wireless sensor networks (WSNs) require location information of the randomly deployed nodes. a common solution to the localization problem is to deploy a few special beacon nodes having location awareness, which help the ordinary nodes to localize. in this approach, non-beacon nodes estimate their locations using noisy distance measurements from three or more non-collinear beacons they can receive signals from. in this paper, the ranging-Based localization task is formulated as a multidimensional optimization problem, and addressed using bio-inspired algorithms, exploiting their quick convergence to quality solutions. an investigation on distributed iterative localization is presented in this paper. …

Layered Frequency-Domain Equalization For Single Carrier Mimo Systems With Multiple Carrier Frequency Offsets, Jian Zhang, Yahong Rosa Zheng

Electrical and Computer Engineering Faculty Research & Creative Works

In this paper, carrier frequency offsets (CFOs) are considered in a layered frequency-domain equalization (LFDE) architecture for a single carrier (SC) broadband wireless multiple-input multiple-output (MIMO) system. at each layer of detection, a group of best data streams are selected to be equalized and reliably detected via removing the phase and amplitude distortion caused by the multiple CFOs. the estimated phase rotations and amplitude scalars are required to be compensated to the detected data streams in order to reconstruct the interference signals which are canceled out from the received signals. Instead of direct estimation of CFOs, our algorithm is to …

On The Statistical Estimation Of Rényi Entropies, Elia Liitiäinen, Amaury Lendasse, Francesco Corona

Engineering Management and Systems Engineering Faculty Research & Creative Works

Estimating Entropies is Important in Many Fields Including Statistical Physics, Machine Learning and Statistics. While the Shannon Logarithmic Entropy is the Most Fundamental, Other Rényi Entropies Are Also of Importance. in This Paper, We Derive a Bias Corrected Estimator for a Subset of Rényi Entropies. the Advantage of the Estimator is Demonstrated Via Theoretical and Experimental Considerations. © 2009 IEEE.

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An Analysis Of Participation In Servant Leadership As Self Reported By Elementary School Principals In Southwest Georgia, Barbara Perryman Williams

College of Graduate Studies: Theses & Dissertations

Servant leadership is an approach to leadership that holds promise in the school setting because of the nature of the principalship. The current educational climate created by the No Child Left Behind Act, funding cuts, and principal shortages increases the importance of leadership within the schools. Utilization of the approach has been reported in business, but it was less clear if school leaders by practice model servant leadership in elementary schools. The purpose of this mixed methods research study was to determine the extent that elementary school principals in Southwest Georgia participated in the servant leadership model. The researcher administered …

Teacher Job Satisfaction In The Georgia Department Of Juvenile Justice School System, Rufus Douglas Williams

College of Graduate Studies: Theses & Dissertations

Job satisfaction can be viewed as somewhat of a reflection of how an employee feels they are treated within the work setting and can also affect physical and emotional well-being. Concerns about supervisory relationships, expectations, working conditions, peer relationships, and communication channels are key factors in determining job satisfaction for teachers. Consequently, the level of job satisfaction a teacher feels toward his or her job can affect organizational functioning and may become a reflection of organizational functioning. The researcher administered a Likert-scale survey, The Job Satisfaction Questionnaire, developed by Spector to 241 teachers who work in correctional facilities in the …

Educating Limited Acreage Producers Using Web-Based Technology, Blake K. Bennett, Jason L. Johnson, Rebecca Parker

Journal of Extension

Collaborative learning Internet courses provide a means of disseminating information to limited acreage producers. Three multi-disciplinary subject curriculums were assimilated into an e-learning platform. Incorporating student online discussion completed the collaborative learning process. With development complete and classes currently being offered, a model is established for Extension programs nationwide.

Improving The Landscape Design Skills Of North Carolina Green Industry Professionals, Anthony V. Labude, Pat Lindsey, Anne Spafford, Lucy Bradley, Michelle Wallace, Clifford D. Ruth

Journal of Extension

A 2-day hands-on landscape design workshop was presented to landscape design professionals in the North Carolina green industry who had never received formal training in the design process. All attendees were satisfied, significantly increased their knowledge of landscape design, and adopted key strategies for improving their designs and design skills.

Survey Of Former Ida Program Participants: How Do They Fare?, Cäzilla Loibl, Beth Red Bird

Journal of Extension

While a number of studies have examined the savings performance of participants in the Individual Development Account (IDA) program, research about long-term program outcomes is limited. To fill this void, we present findings of a survey of IDA participants' asset holdings after they left the IDA program. Results document that those who successfully complete the IDA program report higher levels of asset ownership after completing the program, compared to those dropping out of the program prematurely. This supports the view that IDA programs affect the dispositions and behaviors necessary to successfully maintain a home, complete post-secondary education, and establish a …