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(1 - 15 of 15)
- Title
- The Relationship Between Perceived Personal Fairness, Social Fairness, Hotel Cancellation Policies and Consumer Patronage.
- Creator
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Smith, Scott, Parsa, Haragopal, Chen, Po-Ju, Nusair, Khaldoon, Robinson, Edward, Schwartz, Zvi, University of Central Florida
- Abstract / Description
-
The objective of the study was to examine the relationships between the concepts of personal fairness and social fairness and hotel cancellation policies. These relationships will be explored using the framework of Prospect Theory in terms of consumer patronage (willingness-to-purchase and word-of-mouth).This study includes a brief history of the development of the lodging industry in the United States from inns and taverns to the modern hotel industry that is a critical sector of the...
Show moreThe objective of the study was to examine the relationships between the concepts of personal fairness and social fairness and hotel cancellation policies. These relationships will be explored using the framework of Prospect Theory in terms of consumer patronage (willingness-to-purchase and word-of-mouth).This study includes a brief history of the development of the lodging industry in the United States from inns and taverns to the modern hotel industry that is a critical sector of the hospitality and tourism economy. Current statistics are provided regarding the U.S. and Central Florida hotel industry in order to provide both a national and local economic perspective. The study also provides relevant statistics regarding U.S. domestic traveller information.The included literature review consists of concepts of mental accounting theory, economic utility theory, prospect theory, personal fairness, social fairness, and consumer patronage. The study also discusses how the lodging industry is unique in its implementation of reservation cancellation policies when compared against other industries. Research regarding merchandise return policies is also discussed here. The study was designed to investigate three separate components of both personal and social fairness. The first component investigated the effects of hotel rate price increases and discounts on personal fairness when compared against an existing reference price. The second component studied the perceptions of social fairness on three established hotel cancellation policies. The third component introduces a treatment of distributive and procedural fairness violations as a moderator to observe the effects on consumer patronage for the same three hotel cancellation policies. The data were collected from 415 hotel guests staying in Central Florida hotels near the Orlando international airport using an experimental method which provided different written scenarios regarding hotel pricing and three different hotel cancellation policies. The data was then analyzed using Analysis of Variance (ANOVA) and Tukey's Post Hoc test to provide results that allowed the comparison of effects on each in terms of consumer patronage. The study results indicated that that price increases against established reference prices had a significant negative effect on consumer patronage whereas discounts of the same magnitude had a significant effect only in the middle range. Included smaller and large discounts did not have a significant effect on consumer patronage outside of the middle range. The study results also indicated that there was significant difference in consumer patronage between an Open cancellation policy and a 48 Hour Cancellation Policy. There is a significant difference in consumer patronage when a No Refund policy is compared against both the Open Cancellation Policy and the 48 Hour Cancellation Policy. The study results also show that a violation of either Distributive Fairness or Procedural Fairness has a significant negative effect on consumer patronage for both an Open Cancellation policy and 48 Hour Cancellation Policy. However, when Distributive Fairness or Procedural Fairness violations are introduced as a moderator, there is no significant effect on a No Refund Cancellation Policy.The study and its ensuing results are of importance to the academic community in that it provides additional scholarly support to both Prospect Theory and the theory of mental accounting and the roles that each plays in consumer behavior. From an industry practitioner perspective, the current results provide insight into hotel consumer's attitudes regarding rate increases/ discounts and the implementation of the three different hotel cancelation policies. The results can be utilized to provide justification and guidance in altering or establishing hotel cancellation policies that hotel consumers consider to be fair.
Show less - Date Issued
- 2012
- Identifier
- CFE0004269, ucf:49508
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004269
- Title
- CONGESTION AVOIDANCE AND FAIRNESS IN WIRELESS SENSOR NETWORKS.
- Creator
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Ahmad, Mohammad, Turgut, Damla, University of Central Florida
- Abstract / Description
-
Sensor network congestion avoidance and control primarily aims to reduce packet drops while maintaining fair bandwidth allocation to existing network flows. The design of a congestion control algorithm suited for all types of applications in sensor networks is a challenging task due to the application-specific nature of these networks. With numerous sensors transmitting data simultaneously to one or more base stations (also called sinks), sensor nodes located near the base station will most...
Show moreSensor network congestion avoidance and control primarily aims to reduce packet drops while maintaining fair bandwidth allocation to existing network flows. The design of a congestion control algorithm suited for all types of applications in sensor networks is a challenging task due to the application-specific nature of these networks. With numerous sensors transmitting data simultaneously to one or more base stations (also called sinks), sensor nodes located near the base station will most likely experience congestion and packet loss. In this thesis, we propose a novel distributed congestion avoidance algorithm which calculates the ratio of the number of downstream and upstream nodes. This ratio value (named Characteristic ratio) is used to take a routing decision and incorporate load balancing while also serving as a pointer to the congestion state of the network. Available queue sizes of the downstream nodes are used to detect incipient congestion. Queue characteristics of candidate downstream nodes are used collectively to implement both congestion avoidance and fairness by adjusting the node's forwarding rate and next hop destination. Such an approach helps to minimize packet drops, improve energy efficiency and load balancing. In cases of severe congestion, the source is signaled to reduce its sending rate and enable the network recovery process. This is essentially a transport layer algorithm and would work best with a multi-path routing protocol and almost any MAC layer standard. We present the design and implementation of the proposed protocol and compare it with the existing avoidance protocols like Global rate control and Lightweight buffering. Our simulation results show a higher packet delivery ratio with greater node buffer utilization for our protocol in comparison with the conventional mechanisms.
Show less - Date Issued
- 2007
- Identifier
- CFE0001755, ucf:47255
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0001755
- Title
- CONCEPTIONS OF JUSTICE:A SAMPLING OF STUDENT PERSPECTIVES.
- Creator
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Landon, Matt, Huff-Corzine, Lin, University of Central Florida
- Abstract / Description
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Although the literature in the field of criminal justice and philosophy is full of ideas of what constitutes "justice," little to nothing has been done to see where the average individual's opinion falls in relation to these ideas. This paper analyzes a cross-sectional convenience sample of students at UCF to determine their preference of six models of justice: utilitarianism, contractarianism, fairness, retributivism, moralism, and libertarianism. Correlating demographic factors are also...
Show moreAlthough the literature in the field of criminal justice and philosophy is full of ideas of what constitutes "justice," little to nothing has been done to see where the average individual's opinion falls in relation to these ideas. This paper analyzes a cross-sectional convenience sample of students at UCF to determine their preference of six models of justice: utilitarianism, contractarianism, fairness, retributivism, moralism, and libertarianism. Correlating demographic factors are also discussed.
Show less - Date Issued
- 2014
- Identifier
- CFH0004578, ucf:45161
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH0004578
- Title
- INVESTIGATE THE WEALTH EFFECT OF INVESTMENT BANKS AND FAIRNESS OPINIONS THEY PROVIDE IN CORPORATE MERGERS AND ACQUISITIONS.
- Creator
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Wang, Weishen, Whyte, Ann Marie, University of Central Florida
- Abstract / Description
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The dissertation studies the value of both investment banks' services on the whole and fairness opinions specifically, which the banks provide to the acquiring firms. In the first chapter, I examine how investment banks and acquiring firms' governance quality interact to affect shareholders' wealth in corporate mergers and acquisitions. Although the wealth impact of investment banks in mergers and acquisitions is widely studied in the literature, existing studies do not consider...
Show moreThe dissertation studies the value of both investment banks' services on the whole and fairness opinions specifically, which the banks provide to the acquiring firms. In the first chapter, I examine how investment banks and acquiring firms' governance quality interact to affect shareholders' wealth in corporate mergers and acquisitions. Although the wealth impact of investment banks in mergers and acquisitions is widely studied in the literature, existing studies do not consider the interaction between governance quality and investment banks. I examine how investment banks and governance quality of acquiring firms interact to affect the wealth of acquiring firms' shareholders. I find that acquiring firms with poor governance are more likely to use investment banks in the deal. This association holds even after controlling for deal feature and other characteristics. I find that the use of investment banks per se does not result in a wealth reduction for the acquiring firms' shareholders. However, when the acquiring firm has poor governance, the use of investment bank is associated with extra value loss for the shareholders. The finding suggests that investment banks may help managerial empire building at the expense of shareholders under some circumstances. The study indicates that when studying investment bank's impact it is important to consider the quality of the hiring firms' governance. In the second chapter, I investigate the wealth implications of fairness opinions that the board of an acquiring firm purchases in corporate mergers from investment banks. Using the propensity score matching method to address the self-selection issue, I find that firms undertaking opinioned mergers under-perform firms with non-opinioned matching mergers in short windows around the announcement date. In the long run, the firms with opinioned merger do not perform better than firms with non-opinioned mergers. The acquiring firms perform poorly relative to their performance before the mergers, irrespective of whether their mergers are opinioned. Over a 12-month window after the mergers, the acquiring firms involved in both opinioned and non-opinioned mergers under-perform matching firms that do not make mergers. These findings are consistent with the hypothesis that the board buys a fairness opinion for its self-protection instead of maximization of shareholder wealth. The implication of this finding is that when investors evaluate mergers, they should focus primarily on deal characteristics, not fairness opinion.
Show less - Date Issued
- 2007
- Identifier
- CFE0001621, ucf:47173
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0001621
- Title
- THE EFFECTS OF DIFFERENTIAL ITEM FUNCTIONING ON PREDICTIVE BIAS.
- Creator
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Bryant, Damon, Stone-Romero, Eugene, University of Central Florida
- Abstract / Description
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The purpose of this research was to investigate the relation between measurement bias at the item level (differential item functioning, dif) and predictive bias at the test score level. Dif was defined as a difference in the probability of getting a test item correct for examinees with the same ability but from different subgroups. Predictive bias was defined as a difference in subgroup regression intercepts and/or slopes in predicting a criterion. Data were simulated by computer. Two...
Show moreThe purpose of this research was to investigate the relation between measurement bias at the item level (differential item functioning, dif) and predictive bias at the test score level. Dif was defined as a difference in the probability of getting a test item correct for examinees with the same ability but from different subgroups. Predictive bias was defined as a difference in subgroup regression intercepts and/or slopes in predicting a criterion. Data were simulated by computer. Two hypothetical subgroups (a reference group and a focal group) were used. The predictor was a composite score on a dimensionally complex test with 60 items. Sample size (35, 70, and 105 per group), validity coefficient (.3 or .5), and the mean difference on the predictor (0, .33, .66, and 1 standard deviation, sd) and the criterion (0 and .35 sd) were manipulated. The percentage of items showing dif (0%, 15%, and 30%) and the effect size of dif (small = .3, medium = .6, and large = .9) were also manipulated. Each of the 432 conditions in the 3 x 2 x 4 x 2 x 3 x 3 design was replicated 500 times. For each replication, a predictive bias analysis was conducted, and the detection of predictive bias against each subgroup was the dependent variable. The percentage of dif and the effect size of dif were hypothesized to influence the detection of predictive bias; hypotheses were also advanced about the influence of sample size and mean subgroup differences on the predictor and criterion. Results indicated that dif was not related to the probability of detecting predictive bias against any subgroup. Results were inconsistent with the notion that measurement bias and predictive bias are mutually supportive, i.e., the presence (or absence) of one type of bias is evidence in support of the presence (or absence) of the other type of bias. Sample size and mean differences on the predictor/criterion had direct and indirect effects on the probability of detecting predictive bias against both reference and focal groups. Implications for future research are discussed.
Show less - Date Issued
- 2004
- Identifier
- CFE0000157, ucf:46160
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000157
- Title
- ACCESS GAMES: A GAME THEORETIC FRAMEWORK FOR FAIR BANDWIDTH SHARING IN DISTRIBUTED SYSTEMS.
- Creator
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Rakshit, Sudipta, Guha, Ratan, University of Central Florida
- Abstract / Description
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In this dissertation, the central objective is to achieve fairness in bandwidth sharing amongst selfish users in a distributed system. Because of the inherent contention-based nature of the distributed medium access and the selfishness of the users, the distributed medium access is modeled as a non-cooperative game; designated as the Access Game. A p-CSMA type medium access scenario is proposed for all the users. Therefore, in the Access Game, each user has two actions to choose from: ...
Show moreIn this dissertation, the central objective is to achieve fairness in bandwidth sharing amongst selfish users in a distributed system. Because of the inherent contention-based nature of the distributed medium access and the selfishness of the users, the distributed medium access is modeled as a non-cooperative game; designated as the Access Game. A p-CSMA type medium access scenario is proposed for all the users. Therefore, in the Access Game, each user has two actions to choose from: "transmit" and "wait". The outcome of the Access Game and payoffs to each user depends on the actions taken by all the users. Further, the utility function of each user is constructed as a function of both Quality of Service (QoS) and Battery Power (BP). Various scenarios involving the relative importance of QoS and BP are considered. It is observed that, in general the Nash Equilibrium of the Access Game does not result into fairness. Therefore, Constrained Nash Equilibrium is proposed as a solution. The advantage of Constrained Nash Equilibrium is that it can be predicated on the fairness conditions and the solution will be guaranteed to result in fair sharing of bandwidth. However, Constrained Nash Equilibrium is that it is not self-enforcing. Therefore, two mechanisms are proposed to design the Access Game in such a way that in each case the Nash Equilibrium of the Access Game satisfies fairness and maximizes throughput. Hence, with any of these mechanisms the solution of the Access Game becomes self-enforcing.
Show less - Date Issued
- 2005
- Identifier
- CFE0000700, ucf:46603
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000700
- Title
- Correlates to Police and Correctional Burnout: An Exploratory Study.
- Creator
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McDonald, James, Holmes, Stephen, Adams, Kenneth, Wolf, Ross, Addelston, Judi, Goltz, Jeffrey, University of Central Florida
- Abstract / Description
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This study builds on the small but growing body of research examining the antecedents and effects of burnout on police and corrections officers. A review of the extant literature on burnout in general and on the literature exploring police and correctional officer burnout in particular identified several variables that contribute to the social-psychological condition of burnout. The variables identified in the literature review were grouped according to biographical factors (gender, race...
Show moreThis study builds on the small but growing body of research examining the antecedents and effects of burnout on police and corrections officers. A review of the extant literature on burnout in general and on the literature exploring police and correctional officer burnout in particular identified several variables that contribute to the social-psychological condition of burnout. The variables identified in the literature review were grouped according to biographical factors (gender, race/ethnicity, and age), biographical stressors (marital status and level of education), organizational factors (occupational field, agency size, tenure, and rank), workplace stressors (recent promotions, transfers or discipline, and perceptions of fairness in promotions, discipline, and transfers), or life-event stressors. This study utilized the Maslach Burnout Inventory-General Survey (MBI-GS) to assess burnout. The Social Readjustment Rating Scale (SRRS) developed by Holmes and Rahe (1996) was used to identify life-event stressors. The sample for this study was drawn from police and correctional officers attending professional development training at a regional criminal justice training center in Central Florida. Of the 577 students surveyed, 417 remained in the sample after duplicates were eliminated. A multi-stage analysis, which included analysis of variance (ANOVA), independent sample t-tests, and ordinary least squared techniques (OLS), was conducted to explore the influences of different correlates of burnout on police and correctional officers. Multiple one-way ANOVA models and independent sample t-tests were run first, followed by several stages of multiple regression analysis. In the initial OLS regression models, only the variables for biographical factors, biographical stressors, and occupational factors were entered in the models. In following stage, workplace stressors were added to the regression models, followed by the addition of life-event stressors into the final regression models. The correlates of burnout found to be most significant included race/ethnicity, agency size, and perceptions of fairness in promotions and discipline. Of the correlates that were significant, race/ethnicity and perceptions of fairness were the most noteworthy, since the data indicated White/Caucasian officers experienced greater levels of burnout than minority officers, a finding that appeared related to an officer's perceptions of fairness in promotions and discipline. In addition, a statistically significant difference in professional efficacy scores was detected between officers from smaller agencies (99 officers or fewer) and officers from the largest agencies (1,000 officers or more). The findings from this study seem to suggest that burnout may be influenced by perceptions of fairness in promotional and disciplinary processes, which may be confounded by an officer's race/ethnicity. To address this matter, police and correctional agency administrators might want to consider designing promotional and disciplinary procedures that stress transparency and emphasize merit-based outcomes rather than equality-based outcomes. With regard to agency size, administrators from small agencies should consider steps that make the job more rewarding to their officers so they are less susceptible to burnout.
Show less - Date Issued
- 2012
- Identifier
- CFE0004215, ucf:49016
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004215
- Title
- An Examination of Issues Related to Professional Skepticism in Auditing.
- Creator
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Nickell, Erin, Trompeter, Gregory, Arnold, Vicky, Roberts, Robin, Cohen, Jeffrey, University of Central Florida
- Abstract / Description
-
The third general standard of fieldwork requires auditors to maintain a skeptical mindset with regards to the collection and critical assessment of audit evidence. While professional skepticism is frequently referenced by professional standards, a lack of precision in defining the concept presumably leads to variation in how skepticism is exercised in practice. Drawing on theories from the fields of psychology, economics and organizational justice, this dissertation considers different...
Show moreThe third general standard of fieldwork requires auditors to maintain a skeptical mindset with regards to the collection and critical assessment of audit evidence. While professional skepticism is frequently referenced by professional standards, a lack of precision in defining the concept presumably leads to variation in how skepticism is exercised in practice. Drawing on theories from the fields of psychology, economics and organizational justice, this dissertation considers different perspectives of what constitutes sufficient professional skepticism and examines how those perspectives differ between audit practitioners and regulators.First, I consider competing perspectives of professional skepticism (-) neutral versus presumptive doubt (-) and whether asking auditors to adopt alternative perspectives of skepticism may have implications for audit efficiency and effectiveness. While, too little skepticism may endanger audit effectiveness and lead to audit failure or enforcement action, too much skepticism may arguably lead to unnecessary costs and inefficiency.Second, I consider whether the nature of the auditor-client relationship threatens an auditor's ability to maintain an attitude of professional skepticism. For example, theoretical perspectives from the fields of psychology and economics suggest that auditors may, consciously or unconsciously, be less skeptical of clients with whom they have developed close, positive working relationships or financial dependencies. More specifically, I consider whether skeptical behavior is impeded by management who display low-risk attitudes towards fraud or by client's who are considered to be highly important to the profitability of the local office.Finally, I examine how professional skepticism is defined from a regulator's perspective. When a public company is accused of fraudulent financial reporting, regulators may determinethat the audit performed on the fraudulent financial statements was deficient. Prior research has suggested that in such cases, insufficient skepticism is often a leading cause of alleged audit failure. Within a fairness theory framework, this study examines enforcement actions against auditors between 1999 and 2009, and identifies certain factors that are associated with a citation for a lack of professional skepticism. Overall, results suggest that regulators approach the issue by determining whether auditors should have been more skeptical. Factors found to affect this determination include whether the auditor was perceived as having been aware of an elevated risk of fraud or whether the client was accused of having provided the auditor with false or misleading information during the course of their investigation.
Show less - Date Issued
- 2012
- Identifier
- CFE0004417, ucf:49385
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004417
- Title
- Essays on Marketing Strategies in the Context of Interdependent Consumption.
- Creator
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Talebi Ashoori, Minoo, Stock, Axel, Liu, Lin, Mao, Huifang, Caputo, Michael, University of Central Florida
- Abstract / Description
-
This dissertation consists of two essays in which I study the impact of two interdependent consumerbehaviors, fairness concerns and exclusivity seeking, on a companys marketing strategiesand profits specifically in a context where it tries to expand its clientele with the objective of generatingrepeat purchases, for example by running deals on daily deal platforms. In the first essay,I examine the impact of customers fairness concerns on the profitability of a company runningpromotions on...
Show moreThis dissertation consists of two essays in which I study the impact of two interdependent consumerbehaviors, fairness concerns and exclusivity seeking, on a companys marketing strategiesand profits specifically in a context where it tries to expand its clientele with the objective of generatingrepeat purchases, for example by running deals on daily deal platforms. In the first essay,I examine the impact of customers fairness concerns on the profitability of a company runningpromotions on daily deal platforms. With the prevalence of social media and the internet, informationabout such targeted promotions can become available to all consumers including those whodid not have access to the platform and paid a full-price. Conducting a laboratory experiment,I demonstrate that knowledge about targeted promotions often leads to post-promotional fairnessconcerns among these consumers resulting in an increased tendency to switch providers. Incorporatingthe results of the experiment in a two-period game-theoretic model I analyze the impactof customers post-promotional fairness concerns on the profits of quality differentiated companieswho compete by running targeted promotions. I find that the low quality provider always suffersfrom consumers sensitivity to unfairness. Contrary, I show that the high quality provider can counterintuitivelybenefit from consumers fairness concerns as long as its quality advantage is not toolarge. Furthermore, I analyze how profits are impacted when information about the targeted dealsleaks to non-targeted customers who would have bought at the regular price. I find that, counterintuitively,competing firms profits increase with leakage. In the second essay of this dissertation, Istart with the observation that many platform members are new customers and are uncertain aboutthe quality of the companys product or service until they consume it. In such a context, I examinea high quality sellers optimal signaling strategy in a market where consumers prefer to purchase ascarce product due to desire for exclusivity or to receive a service in a non-crowded environmentdue to better experience and service delivery. Utilizing a repeat purchase signaling model I show that, consistent with prior literature, the high quality firm signals its quality by making its productscarce as well as charging a high price when consumers desire for exclusivity is high and cost ofquality is great. Contrary, I also find conditions under which the high quality firm counterintuitivelymakes its product widely available and prices it low to signal its quality. The model may inpart explain how high quality sellers market their products or services on daily deal websites.
Show less - Date Issued
- 2015
- Identifier
- CFE0005890, ucf:50855
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005890
- Title
- An Examination of Job Analysis: Developing Interdisciplinary Strategies in Human Resource Management Facilitative of Mitigating Propensities of Teacher Attrition.
- Creator
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DeVere, Julio, Folger, Robert, Storey, Valerie A., Fisher, Thomas, University of Central Florida
- Abstract / Description
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Despite repeated attempts by school administrators, policymakers and researchers to diagnose and correct rising occurrences of teacher turnover, there has been little change in the actual efforts to retain teachers in academy organizations. In response, this study was conducted to describe process constraints within the academy organization that are responsible for managing teacher turnover. To provide a description of current teacher retention efforts by school administrators, a survey...
Show moreDespite repeated attempts by school administrators, policymakers and researchers to diagnose and correct rising occurrences of teacher turnover, there has been little change in the actual efforts to retain teachers in academy organizations. In response, this study was conducted to describe process constraints within the academy organization that are responsible for managing teacher turnover. To provide a description of current teacher retention efforts by school administrators, a survey instrument was administered to school teachers in the State of Florida. The population sample was dispersed throughout the entire state and closely reflected the demographics of Florida school teachers.The survey addressed two issues: Whether or not there is a consistent effort by school administrators to gauge a teacher's desire to remain in their current position and whether or not the teachers perceive related administration decisions to be fair. To describe perceptions of fairness, a two-prong model was used to measure perceptions of Voice and Equity. Of the 215 respondents, only about 25 percent were administered a survey within the last year that gauges their desire to remain in their current position. Of these respondents who were given a retention survey by their administrators, results were mixed, with only about half of all respondents leaning towards a favorable perception of fairness. The results indicate that there is a logical need for process improvement within the administration of academy organizations before teacher turnover could be managed effectively.
Show less - Date Issued
- 2014
- Identifier
- CFE0005480, ucf:50342
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005480
- Title
- REJECTION IN THE JOB SELECTION PROCESS: THE EFFECTS OF INFORMATION & SENSITIVITY.
- Creator
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Yonce, Clayton, Fritzsche, Barbara, University of Central Florida
- Abstract / Description
-
Most people will experience rejection in the job selection process. Rejection from job opportunities is often issued via a letter from a hiring manager. These letters elicit reactions from applicants who may, in turn, have less favorable self perceptions and less favorable perceptions of the organization from which the applicant was rejected. Numerous research articles have been published that deal with delivering notification of selection and/or rejection to applicants in the job selection...
Show moreMost people will experience rejection in the job selection process. Rejection from job opportunities is often issued via a letter from a hiring manager. These letters elicit reactions from applicants who may, in turn, have less favorable self perceptions and less favorable perceptions of the organization from which the applicant was rejected. Numerous research articles have been published that deal with delivering notification of selection and/or rejection to applicants in the job selection process. However, relatively few use a realistic laboratory design to obtain results. This study examined the effects of sensitivity and information in notifications of rejection when applicants are rejected in the job selection process. A more realistic laboratory design was used to increase the psychological fidelity of the job selection situation. One hundred forty undergraduate students participated in this study. Participants were told to imagine that they were graduate school applicants. Then, the participants completed a fake graduate school admissions test and received notification of rejection from a fake graduate school. Participants were assigned to conditions (letters varying in sensitivity and information type) randomly and the participants completed a post-notification of rejection survey that captured their self and organizational perceptions. Additionally, moderating variables were explored.
Show less - Date Issued
- 2005
- Identifier
- CFE0000877, ucf:46654
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000877
- Title
- PERSONALITY AND INTERPERSONAL ASPECTS OF THE WORK ENVIRONMENT.
- Creator
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Swiden-Wick, RoseAnn, Mottarella, Karen, University of Central Florida
- Abstract / Description
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Workplace arrogance has emerged as a research focus area for many industrial-organizational psychologists. Employees who demonstrate arrogance tend to demonstrate poor job performance, executive failure and poor overall organizational success. The present study investigates arrogance measured by the Workplace Arrogance Scale (WARS: Johnson et al., 2010) in relation to the Honesty Humility facet of the HEXACO Personality Index-Revised (HEXACO PI-R: LEE & Ashton, 2004). A total of 273...
Show moreWorkplace arrogance has emerged as a research focus area for many industrial-organizational psychologists. Employees who demonstrate arrogance tend to demonstrate poor job performance, executive failure and poor overall organizational success. The present study investigates arrogance measured by the Workplace Arrogance Scale (WARS: Johnson et al., 2010) in relation to the Honesty Humility facet of the HEXACO Personality Index-Revised (HEXACO PI-R: LEE & Ashton, 2004). A total of 273 participants completed the WARS and HEXACO PI-R Honesty-Humility Facet of the HEXACO. Results show significant, strong negative correlations between the Honesty-Humility subfacets and the overall Honesty Humility facet score with the WARS scores. These findings indicate that workers high in arrogance lack important honesty-humility characteristics. Once we fully understand the complex mixture of personality traits that make up workplace arrogance, we can begin to screen for it in the hiring process and develop ways to better address it in the workplace.
Show less - Date Issued
- 2013
- Identifier
- CFH0004340, ucf:45018
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH0004340
- Title
- DESIGN AND ANALYSIS OF EFFECTIVE ROUTING AND CHANNEL SCHEDULING FOR WAVELENGTH DIVISION MULTIPLEXING OPTICAL NETWORKS.
- Creator
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Gao, Xingbo, Bassiouni, Mostafa, University of Central Florida
- Abstract / Description
-
Optical networking, employing wavelength division multiplexing (WDM), is seen as the technology of the future for the Internet. This dissertation investigates several important problems affecting optical circuit switching (OCS) and optical burst switching (OBS) networks. Novel algorithms and new approaches to improve the performance of these networks through effective routing and channel scheduling are presented. Extensive simulations and analytical modeling have both been used to evaluate...
Show moreOptical networking, employing wavelength division multiplexing (WDM), is seen as the technology of the future for the Internet. This dissertation investigates several important problems affecting optical circuit switching (OCS) and optical burst switching (OBS) networks. Novel algorithms and new approaches to improve the performance of these networks through effective routing and channel scheduling are presented. Extensive simulations and analytical modeling have both been used to evaluate the effectiveness of the proposed algorithms in achieving lower blocking probability, better fairness as well as faster switching. The simulation tests were performed over a variety of optical network topologies including the ring and mesh topologies, the U.S. Long-Haul topology, the Abilene high-speed optical network used in Internet 2, the Toronto Metropolitan topology and the European Optical topology. Optical routing protocols previously published in the literature have largely ignored the noise and timing jitter accumulation caused by cascading several wavelength conversions along the lightpath of the data burst. This dissertation has identified and evaluated a new constraint, called the wavelength conversion cascading constraint. According to this constraint, the deployment of wavelength converters in future optical networks will be constrained by a bound on the number of wavelength conversions that a signal can go through when it is switched all-optically from the source to the destination. Extensive simulation results have conclusively demonstrated that the presence of this constraint causes significant performance deterioration in existing routing and wavelength assignment (RWA) algorithms. Higher blocking probability and/or worse fairness have been observed for existing RWA algorithms when the cascading constraint is not ignored. To counteract the negative side effect of the cascading constraint, two constraint-aware routing algorithms are proposed for OCS networks: the desirable greedy algorithm and the weighted adaptive algorithm. The two algorithms perform source routing using link connectivity and the global state information of each wavelength. Extensive comparative simulation results have illustrated that by limiting the negative cascading impact to the minimum extent practicable, the proposed approaches can dramatically decrease the blocking probability for a variety of optical network topologies. The dissertation has developed a suite of three fairness-improving adaptive routing algorithms in OBS networks. The adaptive routing schemes consider the transient link congestion at the moment when bursts arrive and use this information to reduce the overall burst loss probability. The proposed schemes also resolve the intrinsic unfairness defect of existing popular signaling protocols. The extensive simulation results have shown that the proposed schemes generally outperform the popular shortest path routing algorithm and the improvement could be substantial. A two-dimensional Markov chain analytical model has also been developed and used to analyze the burst loss probabilities for symmetrical ring networks. The accuracy of the model has been validated by simulation. Effective proactive routing and preemptive channel scheduling have also been proposed to address the conversion cascading constraint in OBS environments. The proactive routing adapts the fairness-improving adaptive routing mentioned earlier to the environment of cascaded wavelength conversions. On the other hand, the preemptive channel scheduling approach uses a dynamic priority for each burst based on the constraint threshold and the current number of performed wavelength conversions. Empirical results have proved that when the cascading constraint is present, both approaches would not only decrease the burst loss rates greatly, but also improve the transmission fairness among bursts with different hop counts to a large extent.
Show less - Date Issued
- 2009
- Identifier
- CFE0002965, ucf:47958
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0002965
- Title
- Electromagnetic Environment in Payload Fairing Cavities.
- Creator
-
Trout, Dawn, Wahid, Parveen, Wu, Xinzhang, Gong, Xun, Tang, Philip, University of Central Florida
- Abstract / Description
-
An accurate determination of a spacecraft's radio frequency electromagnetic field environment during launch and flight is critical for mission success. Typical fairing structures consist of a parabolic nose and a cylindrical core with diameters of 1 to 5 meters resulting in electrically large dimensions for typical operational sources at S, C and X band where the free space wavelength varies from 0.15 m to 0.03 m. These electrically large size and complex structures at present have internal...
Show moreAn accurate determination of a spacecraft's radio frequency electromagnetic field environment during launch and flight is critical for mission success. Typical fairing structures consist of a parabolic nose and a cylindrical core with diameters of 1 to 5 meters resulting in electrically large dimensions for typical operational sources at S, C and X band where the free space wavelength varies from 0.15 m to 0.03 m. These electrically large size and complex structures at present have internal fairing electromagnetic field evaluation that is limited to general approximation methods and some test data. Though many of today's computational electromagnetic tools can model increasingly complex and large structures, they still have many limitations when used for field determination in electrically large cavities. In this dissertation, a series of test anchored, full wave computational electromagnetic models along with a novel application of the equivalent material property technique are presented to address the electrical, geometrical, and boundary constraints for electromagnetic field determination in composite fairing cavity structures and fairings with acoustic blanketing layers. Both external and internal excitations for these fairing configurations are examined for continuous wave and transient sources. A novel modification of the Nicholson Ross Weir technique is successfully applied to both blanketed aluminum and composite fairing structures and a significant improvement in computational efficiency over the multilayered model approach is obtained. The advantages and disadvantages of using commercially available tools by incorporating Multilevel Fast Multipole Method (MLFMM) and higher order method of moments (HO MoM) to extend their application of MoM to electrically large objects is examined for each continuous wave transmission case. The results obtained with these models are compared with those obtained using approximation techniques based on the Q factor, commonly utilized in the industry, and a significant improvement is seen in a prediction of the fields in these large cavity structures. A statistical distribution of data points within the fairing cavity is examined to study the nature of the fairing cavity field distribution and the effect of the presence of a spacecraft load on these fields is also discussed. In addition, a model with external application of Green's function is examined to address the shielding effectiveness of honeycomb panels in a fairing cavity. Accurate data for lightning induced effects within a fairing structure is not available and hence in this dissertation, a transmission line matrix method model is used to examine induced lightning effects inside a graphite composite fairing structure. The simulated results are compared with test data and show good agreement.
Show less - Date Issued
- 2012
- Identifier
- CFE0004275, ucf:49505
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004275
- Title
- Resource Allocation and Pricing in Secondary Dynamic Spectrum Access Networks.
- Creator
-
Khairullah, Enas, Chatterjee, Mainak, Zou, Changchun, Lang, Sheau-Dong, Catbas, Necati, University of Central Florida
- Abstract / Description
-
The paradigm shift from static spectrum allocation to a dynamic one has opened many challenges that need to be addressed for the true vision of Dynamic Spectrum Access (DSA) to materialize. This dissertation proposes novel solutions that include: spectrum allocation, routing, and scheduling in DSA networks. First, we propose an auction-based spectrum allocation scheme in a multi-channel environment where secondary users (SUs) bid to buy channels from primary users (PUs) based on the signal to...
Show moreThe paradigm shift from static spectrum allocation to a dynamic one has opened many challenges that need to be addressed for the true vision of Dynamic Spectrum Access (DSA) to materialize. This dissertation proposes novel solutions that include: spectrum allocation, routing, and scheduling in DSA networks. First, we propose an auction-based spectrum allocation scheme in a multi-channel environment where secondary users (SUs) bid to buy channels from primary users (PUs) based on the signal to interference and noise ratio (SINR). The channels are allocated such that i) the SUs get their preferred channels, ii) channels are re-used, and iii) there is no interference. Then, we propose a double auction-based spectrum allocation technique by considering multiple bids from SUs and heterogeneity of channels. We use virtual grouping of conflict-free buyers to transform multi-unit bids to single-unit bids. For routing, we propose a market-based model where the PUs determine the optimal price based on the demand for bandwidth by the SUs. Routes are determined through a series of price evaluations between message senders and forwarders. Also, we consider auction-based routing for two cases where buyers can bid for only one channel or they could bid for a combination of non-substitutable channels. For a centralized DSA, we propose two scheduling algorithms-- the first one focuses on maximizing the throughput and the second one focuses on fairness. We extend the scheduling algorithms to multi-channel environment. Expected throughput for every channel is computed by modelling channel state transitions using a discrete-time Markov chain. The state transition probabilities are calculated which occur at the frame/slot boundaries. All proposed algorithms are validated using simulation experiments with different network settings and their performance are studied.
Show less - Date Issued
- 2017
- Identifier
- CFE0006890, ucf:51723
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0006890
