Degree Level

An Evaluation of the Effects of a Pay for Performance Plan on Productivity of Employees of a Professional Services Firm (open access)

An Evaluation of the Effects of a Pay for Performance Plan on Productivity of Employees of a Professional Services Firm

This study examined the effects of a productivity-indexed pay for performance plan in a professional services firm. The new plan was implemented after productivity decreased under an existing plan. Performance of staff and senior level accountants was analyzed across three departments under a three-year baseline and a two-year intervention period. Several measures of productivity indicated that the intervention was effective in improving production, especially for employees with full annual workloads. Percentage of salaries earned in incentives was comparable for both the baseline and intervention periods. Possible explanations for trends in the data, weaknesses in the plan, and implications for future research are also discussed.
Date: December 2002
Creator: Porter, Melanie
System: The UNT Digital Library
Temperature dependent rheology of surfactant-hydroxypropyl cellulose solutions. (open access)

Temperature dependent rheology of surfactant-hydroxypropyl cellulose solutions.

The rheology of 1-8% hydroxypropyl cellulose (HPC) solutions has been studied in the temperature range of 20-45 degrees Celsius. The results showed that the relative viscosity at each HPC concentration decreases with increasing temperature. The relative viscosity decreases drastically at about 43 degrees Celsius due to a phase transition. The influence of anionic surfactant, sodium dodecylsulfate (SDS), induced gelation of a 2% HPC solution. The HPC solutions gelled at surfactant SDS concentrations ranging from 0.4 to 1.0 critical micelle concentration (CMC). The gelation of the HPC/SDS hydrogel is explained in the surfactant SDD - bridged HPC linear polymer chains. The complex viscosity - concentration profile was determined below the CMC of the SDS - water pair. The peak itself was a function of frequency indicating the presence of two relaxation times within the gelled network.
Date: December 2002
Creator: Snively, C. Todd
System: The UNT Digital Library
Striving for Amy: A Personal Aesthetic (open access)

Striving for Amy: A Personal Aesthetic

The first chapter of this descriptive paper outlines a problem, proposes a solution and poses three questions for me to answer after completion of research. The problem was to bring an emerging ceramic style into all of my pieces rather than just the few I have mastered. The solution was to create three sets of new forms and make them repeatedly until they boasted the sought-after style. Chapter 2 chronicles the research of creating, morphing, detailing and finally mastering these new forms. Chapter 3 summarizes the experience and answers the three aforementioned questions: (1) What is my personal definition of a successful pot? (2) How does the undulating style affect the functionality of the pot? (3) How does the Campbell tartan glazing complement or detract from the pot's form?
Date: December 2002
Creator: Reynolds, Amy Lauren
System: The UNT Digital Library
A Security Model for Mobile Agents using X.509 Proxy Certificates (open access)

A Security Model for Mobile Agents using X.509 Proxy Certificates

Mobile agent technology presents an attractive alternative to the client-server paradigm for several network and real-time applications. However, for most applications, the lack of a viable agent security model has limited the adoption of the agent paradigm. This thesis presents a security model for mobile agents based on a security infrastructure for Computational Grids, and specifically, on X.509 Proxy Certificates. Proxy Certificates serve as credentials for Grid applications, and their primary purpose is temporary delegation of authority. Exploiting the similarity between Grid applications and mobile agent applications, this thesis motivates the use of Proxy Certificates as credentials for mobile agents. A new extension for Proxy Certificates is proposed in order to make them suited to mobile agent applications, and mechanisms are presented for agent-to-host authentication, restriction of agent privileges, and secure delegation of authority during spawning of new agents. Finally, the implementation of the proposed security mechanisms as modules within a multi-lingual and modular agent infrastructure, the Distributed Agent Delivery System, is discussed.
Date: December 2002
Creator: Raghunathan, Subhashini
System: The UNT Digital Library
Decision-Making at the Court of Appeals Level Involving Religious Liberty Cases (open access)

Decision-Making at the Court of Appeals Level Involving Religious Liberty Cases

Many studies have been completed on factors affecting judicial decisions. Studies have focused on civil rights cases, economic cases, criminal cases, sexual discrimination and obscenity cases, but no work has specifically looked at religious liberty cases. This work examines the factors affecting United States Courts of Appeals judges' decision-making in religious liberty cases. I hypothesize that gender, race, religious background, prior judicial experience, circuit, region and litigant status will all influence the way judges vote in religious liberty cases. The explanatory power of this study is relatively low, but the results indicate that judges follow the law when making decisions in religious liberty cases.
Date: December 2002
Creator: Reeves, Susan Kay
System: The UNT Digital Library
Greek texts and English translations of the Bible: a comparison and contrast of the Textus Receptus Greek New Testament of the sixteenth century and the Alexandrian text of Westcott and Hort (nineteenth century) and Aland and Metzger (twentieth century) concerning variant texts that pertain to the orthodox Christology of the Council of Nicea, A.D. 325. (open access)

Greek texts and English translations of the Bible: a comparison and contrast of the Textus Receptus Greek New Testament of the sixteenth century and the Alexandrian text of Westcott and Hort (nineteenth century) and Aland and Metzger (twentieth century) concerning variant texts that pertain to the orthodox Christology of the Council of Nicea, A.D. 325.

The argument of this paper is that certain salient passages in the New Testament concerning Christology, as it was defined in the Nicene creed in A.D. 325, reflect such orthodoxy better in the Textus Receptus Greek texts and the English translations made from them than do the Alexandrian texts. Arian theology, which was condemned as heretical at Nicea, is examined. Patristic quotations, historical texts, and arguments of the scholars are cited and traced, along with a comparison of Christological verses.
Date: December 2002
Creator: Samples, Gil L.
System: The UNT Digital Library
Herb and Life: A Chinese Medical Family (open access)

Herb and Life: A Chinese Medical Family

This written thesis examines the process of producing Herb and Life: a Chinese Medical Family, a thirty-minute documentary video that explores the producer's family members' relationship with Traditional Chinese Medicine. This documentary uses interviews, narration, music, and observational sequences to display documentary subjects' career choices and their experiences with Traditional Chinese Medicine. This written thesis reveals the development of this documentary, from the pre-production to production and post-production stages. It also incorporates theoretical analysis and self-evaluation of this documentary video.
Date: December 2002
Creator: Yang, Hongyi
System: The UNT Digital Library

The Effects of Reinforcing Operant Variability on Task Acquisition

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Neuringer, Deiss, and Olson (2000) was replicated and extended to determine the effect of variability contingencies on task acquisition for twelve 7-9 year old children. Subjects first learned to press a computer's shift keys with increasing response variation. Each subject was then exposed to one of three experimental conditions during which they received a point for target responses. Variability condition subjects received additional points on a variable interval schedule for nontarget responses occurring less than 3% of the time. The any condition subjects received additional points on a variable interval schedule for any nontarget response. Control subjects received points only for target responses. All variability condition and two control subjects learned the target response. All any condition subjects and two control subjects did not.
Date: December 2002
Creator: Seymour, Kail H.
System: The UNT Digital Library
Approaches to Nature Aesthetics: East Meets West (open access)

Approaches to Nature Aesthetics: East Meets West

Nature aesthetics is examined as an approach to environmental ethics. The characteristics of proper nature appreciation show that every landscape can be appreciated impartially in light of the dynamic processes of nature. However, it is often claimed that natural beauty decreases if humans interfere into nature. This claim leads to the separation of human culture and nature, and limits the number of landscapes which can be protected in terms of aesthetic value. As a solution to this separation, a non-dualistic Japanese aesthetics is examined as a basis for the achievement of the coexistence of culture and nature. Ecological interrelationships between human culture and nature are possible by means of an aesthetic consciousness in terms of non-hierarchical attitudes.
Date: December 2002
Creator: Toyoda, Mitsuyo
System: The UNT Digital Library
An Annotated Bibliography of Mobile Agents in Networks (open access)

An Annotated Bibliography of Mobile Agents in Networks

The purpose of this thesis is to present a comprehensive colligation of applications of mobile agents in networks, and provide a baseline association of these systems. This work has been motivated by the fact that mobile agent systems have been deemed proficuous alternatives in system applications. Several mobile agent systems have been developed to provide scalable and cogent solutions in network-centric applications. This thesis examines some existing mobile agent systems in core networking areas, in particular, those of network and resource management, routing, and the provision of fault tolerance and security. The inherent features of these systems are discussed with respect to their specific functionalities. The applicability and efficacy of mobile agents are further considered in the specific areas mentioned above. Although an initial foray into a collation of this nature, the goal of this annotated bibliography is to provide a generic referential view of mobile agent systems in network applications.
Date: December 2002
Creator: Sriraman, Sandhya
System: The UNT Digital Library
Germinal Ideas and Processes within  plies (2002): A Chamber Work for Eleven Players (open access)

Germinal Ideas and Processes within plies (2002): A Chamber Work for Eleven Players

The piece is a twenty minute work discoursing the integration and eventual dissolution of two separate musical strands. The pitch material of each strand is determined from synthetic scales whose intervalic content duplicates at the following intervals: Perfect 12th, Diminished 12th, Minor 9th, Perfect 8ve, and Major 7th. A proportional means of temporal compression is generated through the use of the factor, 11/15 (e.g. Event 2 is 11/15 the duration of Event 1). Various elements of jazz music informed the construction of plies, including the instrumentation of the ensemble and the means by which the performers interact throughout the piece. Internal cueing and performer decisions are meant to eliminate the need of a conductor in favor of increased interpretive freedom by the performers.
Date: December 2002
Creator: Stecher, David
System: The UNT Digital Library
A Validation Study of a Writing Skills Test for Police Recruit Applicants (open access)

A Validation Study of a Writing Skills Test for Police Recruit Applicants

This study evaluated the effectiveness of a direct test of higher-order and lower-order writing abilities needed for police report writing. This test was specifically designed to address report writing deficiencies experienced by police in the training academy. Descriptive statistics were examined, and relationships between this test and writing ability dimensions included on a separate, indirect, multiple choice test were investigated. Direct and indirect scores were correlated with training academy performance. Because both tests assessed higher-order and lower-order writing abilities, comparisons were made to determine which type of test was most appropriate for assessing the different types of writing skills. Results indicated that the direct test was a valid predictor of academy performance. Direct methods of measurement were found to be better than indirect methods for assessing higher-order writing skills. For lower-order writing skills, the indirect method appeared to be a better measure than the direct method.
Date: December 2002
Creator: Stolp, Shelly J.
System: The UNT Digital Library
Eplucher Les Oignons (Peeling the Onions) (open access)

Eplucher Les Oignons (Peeling the Onions)

My creative intent is to connect with viewers at an emotional level. My chosen metaphor is “Peeling the Onion.” The implication of the metaphor is that understanding is achieved after one looks below the surface and views the underlying “layers.” The challenge is to find images that are personally interesting and also connect with the viewer. At times the creative process proceeds in linear manner and at other times it seems to take on a life of its own. During my search for a balance between the literal and ambiguous, I explored the circle, the spiral and the sphere. Printmaking offers unique opportunities to produce evocative imagery. Drawing is the basic tool I employ to define form and my use of printmaking processes allows for evolving the image over time. The immediacy and spontaneity of my drawings is combined with a methodical approach to image development. Exploring the spiral, sphere, circles and the metaphor “Peeling the Onion” has provided me a means of giving a form to my concepts and hopefully a connection with the viewer.
Date: December 2002
Creator: Wester, Judith C.
System: The UNT Digital Library
An Examination of American Sideshow Banners as Folk Art, ca. 1920-1960 (open access)

An Examination of American Sideshow Banners as Folk Art, ca. 1920-1960

This thesis redresses the lack of scholarly attention paid to painted circus banners produced in the United States during the first half of the twentieth century by exploring the extent to which American folk art painting scholarship, methodologies, and objects can be used to articulate the meaning and significance of banner painting. This study expands the disciplinary treatment of banner painting by introducing domesticated art as a means of representing non-academic art produced in the U.S. The thesis also presents a model for exploring banner painting after identifying traditional American folk art painting methodologies, which fail to investigate banner painting style, format, and artistic training associated with banner work.
Date: December 2002
Creator: Weimer, Emery Christian
System: The UNT Digital Library
DirectShow Approach to Low-Cost Multimedia Security Surveillance System (open access)

DirectShow Approach to Low-Cost Multimedia Security Surveillance System

In response to the recent intensive needs for civilian security surveillance, both full and compact versions of a Multimedia Security Surveillance (MSS) system have been built up. The new Microsoft DirectShow technology was applied in implementing the multimedia stream-processing module. Through Microsoft Windows Driver Model interface, the chosen IEEE1394 enabled Fire-i cameras as external sensors are integrated with PC based continuous storage unit. The MSS application also allows multimedia broadcasting and remote controls. Cost analysis is included.
Date: December 2002
Creator: Xiao, Wu
System: The UNT Digital Library
The relationship of personality traits to depression in a geriatric population. (open access)

The relationship of personality traits to depression in a geriatric population.

In later life, adverse life events, disability, health problems, inadequate social support, and personality traits hypothesized to be important risk factors for depression. Sample included 35 older (65-84) physical rehabilitation patients in a large metropolitan hospital. Statistical analysis included Pearson Product Moment correlations and multiple regression results. Perceived physical health, instrumental ADLs, life satisfaction, extraversion, and conscientiousness are inversely related to depressive symptom severity; neuroticism is positively related to depressive symptom severity. Regression models predicted depressive symptom severity, PANAS negative effect and PANAS positive affect. Neuroticism, insrumental ADLs, and age are significant predictors of depressive symptom severity; neuroticism and age are signficant predictors of PANAS negative affect, while extraversion is a significant predictor of PANAS positive affect. Personality factors, level of functioning, and age are important factors relating to mood. Limitations of this study include: small sample size with special characteristics (high level of SES); incomplete personal and family history of psychiatric problems; and lack of clinical comparison sample.
Date: December 2002
Creator: Wright, Anna M.
System: The UNT Digital Library

Performance Evaluation of MPLS on Quality of Service in Voice Over IP (VoIP) Networks

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The transmission of voice data over Internet Protocol (IP) networks is rapidly gaining acceptance in the field of networking. The major voice transmissions in the IP networks are involved in Internet telephony, which is also known as IP telephony or Voice Over IP (VoIP). VoIP is undergoing many enhancements to provide the end users with same quality as in the public switched telephone networks (PSTN). These enhancements are mostly required in quality of service (QoS) for the transmission of voice data over the IP networks. As with recent developments in the networking field, various protocols came into market to provide the QoS in IP networks - of them, multi protocol label switching (MPLS) is the most reliable and upcoming protocol for working on QoS. The problem of the thesis is to develop an IP-based virtual network, with end hosts and routers, implement MPLS on the network, and analyze its QoS for voice data transmission.
Date: December 2002
Creator: Chetty, Sharath
System: The UNT Digital Library

Integrating life cycle analysis and the ecological footprint calculator to foster sustainable behaviors

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Many tools have been developed to assess global, national or regional sustainable development policies. However, as governments develop sustainable policies, individuals must also feel empowered to affect their personal impact on the planet. This thesis integrates three sustainability concepts that lend themselves to individual sustainability: The natural step, life cycle assessment, and the ecological footprint. TNS serves to provide the meaning and substance toward sustainable development. LCA helps provide the framework for assessing sustainability. The EF calculator determines the driving components and measures the qualitative decisions made through TNS and LCA. From the analysis of the household footprint calculator a simplified footprint calculator was developed to assist individuals and communities in setting benchmarks and goals as they move away from over-consumption and towards a sustainable lifestyle.
Date: December 2002
Creator: Anderle, Kathryn
System: The UNT Digital Library

Ranges of consideration: crossing the fields of ecology, philosophy and science studies.

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Environmental issues are often complex with many different constituents operating according to a broad range of communication techniques. In order to foster negotiations, different perspectives need to be articulated in lucid ways sensitive to various viewpoints and circumstances. In my thesis I investigate how certain approaches to environmental discourse effect dialogue and negotiation. My first two chapters focus on environmental problems surrounding rangeland ecology along the U.S./Mexico border; whereas the last two chapters explore more theoretical conflicts concerning the philosophy of nature. Throughout the thesis I show the significance of nonhumans (prairie dogs, cattle, biological assessment sheets, environmental laws, etc.) in the human community. Only by considering the roles of nonhumans do we broaden and enrich the conversation between ourselves concerning environmental issues.
Date: December 2002
Creator: Dinneen, Nathan
System: The UNT Digital Library

Ensuring Authenticity and Integrity of Critical Information Using XML Digital Signatures

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It has been noticed in the past five years that the Internet use has been troubled by the lack of sufficient security and a legal framework to enable electronic commerce to flourish. Despite these shortcomings, governments, businesses and individuals are using the Internet more often as an inexpensive and ubiquitous means to disseminate and obtain information, goods and services. The Internet is insecure -- potentially millions of people have access, and "hackers" can intercept anything traveling over the wire. There is no way to make it a secure environment; it is, after all, a public network, hence the availability and affordability. In order for it to serve our purposes as a vehicle for legally binding transactions, efforts must be directed at securing the message itself, as opposed to the transport mechanism. Digital signatures have been evolved in the recent years as the best tool for ensuring the authenticity and integrity of critical information in the so called "paperless office". A model using XML digital signatures is developed and the level of security provided by this model in the real world scenario is outlined.
Date: December 2002
Creator: Korivi, Arjun
System: The UNT Digital Library

Server load balancing.

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Server load balancing technology has obtained much attention as much business proceeded towards e-commerce. The idea behind is to have set of clustered servers that share the load as against a single server to achieve better performance and throughput. In this problem in lieu of thesis, I propose and evaluate an implementation of a prototype scalable server. The prototype consists of a load-balanced cluster of hosts that collectively accept and service TCP connections. The host IP addresses are advertised using the Round Robin DNS technique, allowing any host to receive requests from any client. Once a client attempts to establish a TCP connection with one of the hosts, a decision is made as to whether or not the connection should be redirected to a different host namely, the host with the lowest number of established connections. This problem in lieu of thesis outlines the history of load balancing, various options available today and finally approach for implementing the prototype and the corresponding findings.
Date: December 2002
Creator: Kanuri, Jaichandra
System: The UNT Digital Library

Implementation of Back Up Host in TCP/IP

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This problem in lieu thesis is considering a TCP client H1 making a connection to distant server S and is downloading a file. In the midst of the downloading, if H1 crashes, the TCP connection from H1 to S is lost. In the future, if H1 restarts, the TCP connection from H1 to S will be reestablished and the file will be downloaded again. This cannot happen until host H1 restarts. Now consider a situation where there is a standby host H2 for the host H1. H1 and H2 monitor the health of each other by heartbeat messages (like SCTP). If H2 detects the failure of H1, then H2 takes over. This implies that all resources assigned to H1 are now reassigned or taken over by H2. The host H1 and H2 transmit data between each other when any one of it crashed. Throughout the data transmission process, heart beat chunk is exchanged between the hosts when one of the host crashes. In particular, the IP addresses that were originally assigned to H1 are assigned to H2. In this scenario, movement of the TCP connection between H1 and S to a connection between H2 and S without disrupting the TCP …
Date: December 2002
Creator: Golla,Mohan
System: The UNT Digital Library

A Quality of Service Aware Protocol for Power Conservation in Wireless Ad Hoc and Mobile Networks

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Power consumption is an important issue for mobile computers since they rely on the short life of batteries. Conservation techniques are commonly used in hardware design of such systems but network interface is a significant consumer of power, which needs considerable research to be devoted towards designing a low-power design network protocol stack. Due to the dynamic nature of wireless networks, adaptations are necessary to achieve energy efficiency and a reasonable quality of service. This paper presents the application of energy-efficient techniques to each layer in the network protocol stack and a feedback is provided depending on the performance of this new design. And also a comparison of two existing MAC protocols is done showing a better suitability of E2MAC for higher power conservation. Multimedia applications can achieve an optimal performance if they are aware of the characteristics of the wireless link. Relying on the underlying operating system software and communication protocols to hide the anomalies of wireless channel needs efficient energy consumption methodology and fair quality of service like E2MAC. This report also focuses on some of the various concerns of energy efficiency in wireless communication and also looks into the definition of seven layers as defined by International …
Date: December 2002
Creator: Gangidi, Murali
System: The UNT Digital Library
Hildegard On Rubble Mountain (open access)

Hildegard On Rubble Mountain

Hildegard On Rubble Mountain is a cinema verité documentary about Hildegard Modinger's childhood. She grew up in Stuttgart, Germany during World War II and immigrated to the United States at the age of nineteen. This video follows her back to her childhood neighborhood as she recalls memories of that time in her life. The accompanying production book explains the production process: preproduction, production, postproduction, theoretical approaches, style used and a self-evaluation.
Date: December 2002
Creator: Mullins, Michael Bryan
System: The UNT Digital Library