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DEATH PENALTY KNOWLEDGE, OPINION, AND REVENGE: A TEST OF THE MARSHALL HYPOTHESES IN A TIME OF FLUX
Title
DEATH PENALTY KNOWLEDGE, OPINION, AND REVENGE: A TEST OF THE MARSHALL HYPOTHESES IN A TIME OF FLUX.
Creator
Lee, Gavin, Bohm, Robert, University of Central Florida
Abstract / Description
This thesis tests the three hypotheses derived from the written opinion of Justice Thurgood Marshall in Furman v Georgia in 1972. Subjects completed questionnaires at the beginning and the end of the fall 2006 semester. Experimental group subjects were enrolled in a death penalty class, while control group subjects were enrolled in another criminal justice class. The death penalty class was the experimental stimulus. Findings provided strong support for the first and third hypotheses, i.e.,...
Show moreThis thesis tests the three hypotheses derived from the written opinion of Justice Thurgood Marshall in Furman v Georgia in 1972. Subjects completed questionnaires at the beginning and the end of the fall 2006 semester. Experimental group subjects were enrolled in a death penalty class, while control group subjects were enrolled in another criminal justice class. The death penalty class was the experimental stimulus. Findings provided strong support for the first and third hypotheses, i.e., subjects were generally lacking in death penalty knowledge before the experimental stimulus, and death penalty proponents who scored "high" on a retribution index did not change their death penalty opinions despite exposure to death penalty knowledge. Marshall's second hypothesis--that death penalty knowledge and death penalty support were inversely related--was not supported by the data. Two serendipitous findings were that death penalty proponents who scored "low" on a retribution index also did not change their death penalty opinions after becoming more informed about the subject, and that death penalty knowledge did not alter subjects' initial retributive positions. Suggestions for future research are provided.
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Date Issued
2007
Identifier
CFE0001754, ucf:47259
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0001754
ON THE APPLICATION OF LOCALITY TO NETWORK INTRUSION DETECTION: WORKING-SET ANALYSIS OF REAL AND SYNTHETIC NETWORK SERVER TRAFFIC
Title
ON THE APPLICATION OF LOCALITY TO NETWORK INTRUSION DETECTION: WORKING-SET ANALYSIS OF REAL AND SYNTHETIC NETWORK SERVER TRAFFIC.
Creator
Lee, Robert, Lang, Sheau-Dong, University of Central Florida
Abstract / Description
Keeping computer networks safe from attack requires ever-increasing vigilance. Our work on applying locality to network intrusion detection is presented in this dissertation. Network servers that allow connections from both the internal network and the Internet are vulnerable to attack from all sides. Analysis of the behavior of incoming connections for properties of locality can be used to create a normal profile for such network servers. Intrusions can then be detected due to their abnormal...
Show moreKeeping computer networks safe from attack requires ever-increasing vigilance. Our work on applying locality to network intrusion detection is presented in this dissertation. Network servers that allow connections from both the internal network and the Internet are vulnerable to attack from all sides. Analysis of the behavior of incoming connections for properties of locality can be used to create a normal profile for such network servers. Intrusions can then be detected due to their abnormal behavior. Data was collected from a typical network server both under normal conditions and under specific attacks. Experiments show that connections to the server do in fact exhibit locality, and attacks on the server can be detected through their violation of locality. Key to the detection of locality is a data structure called a working-set, which is a kind of cache of certain data related to network connections. Under real network conditions, we have demonstrated that the working-set behaves in a manner consistent with locality. Determining the reasons for this behavior is our next goal. A model that generates synthetic traffic based on actual network traffic allows us to study basic traffic characteristics. Simulation of working-set processing of the synthetic traffic shows that it behaves much like actual traffic. Attacks inserted into a replay of the synthetic traffic produce working-set responses similar to those produced in actual traffic. In the future, our model can be used to further the development of intrusion detection strategies.
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Date Issued
2009
Identifier
CFE0002718, ucf:48171
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0002718
Comparison Of Casimir , Elastic, Electrostatic Forces For A Micro-Cantilever
Title
Comparison Of Casimir , Elastic, Electrostatic Forces For A Micro-Cantilever.
Creator
Alhasan, Ammar, Peale, Robert, Del Barco, Enrique, Chow, Lee, University of Central Florida
Abstract / Description
Casimir force is a cause of stiction (adhesion) between metal surfaces in Micro-Electro Mechanical Systems (MEMS). Casimir Force depends strongly on the separation of the two surfaces and the contact area. This thesis reviews the theory and prior experimental demonstrations of the Casimir force. Then the Casimir attractive force is calculated for a particular MEMS cantilever device, in which the metal cantilever tip is required to repeatedly touch and release from a metal tip pad on the...
Show moreCasimir force is a cause of stiction (adhesion) between metal surfaces in Micro-Electro Mechanical Systems (MEMS). Casimir Force depends strongly on the separation of the two surfaces and the contact area. This thesis reviews the theory and prior experimental demonstrations of the Casimir force. Then the Casimir attractive force is calculated for a particular MEMS cantilever device, in which the metal cantilever tip is required to repeatedly touch and release from a metal tip pad on the substrate surface in response to a periodic driving electrostatic force. The elastic force due to the bending of the cantilever support arms is also a consideration in the device operation. The three forces are calculated analytically and compared as a function of cantilever tip height. Calculation of the electrostatic force uses coefficients of capacitance and electrostatic induction determined numerically by the finite element method, including the effect of permittivity for the structural oxide. A condition on the tip area to allow electrostatic release of the tip from the surface against Casimir sticking and elastic restoring forces is established.
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Date Issued
2014
Identifier
CFE0005123, ucf:50713
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0005123
A Study of Central Florida College Students' Acceptance of the Theory of Evolution, Microevolution, Macroevolution, and Human Evolution
Title
A Study of Central Florida College Students' Acceptance of the Theory of Evolution, Microevolution, Macroevolution, and Human Evolution.
Creator
Schleith, David, Murray, Kenneth, Baldwin, Lee, Doherty, Walter, Everett, Robert, University of Central Florida
Abstract / Description
In order to study the teaching and learning of the theory of evolution and determine levels of acceptance of the theory of evolution among college students studying biology in Central Florida, the Inventory of Student Evolution Acceptance, I-SEA, was administered to over 500 university students enrolled in a biology course during the Fall 2016 term. An analysis of 489 completed surveys demonstrated strong overall acceptance of the theory of evolution (average score = 103 out of 120 total...
Show moreIn order to study the teaching and learning of the theory of evolution and determine levels of acceptance of the theory of evolution among college students studying biology in Central Florida, the Inventory of Student Evolution Acceptance, I-SEA, was administered to over 500 university students enrolled in a biology course during the Fall 2016 term. An analysis of 489 completed surveys demonstrated strong overall acceptance of the theory of evolution (average score = 103 out of 120 total possible). Of all students, 78% fell into the category of very high acceptance of the theory of evolution. Students who reported attending worship services weekly or more scored statistically significantly lower on the I-SEA than students who reported attending worship services less than weekly. The level of previous high school coursework in biology(-)whether honors, or advanced biology courses were taken-- did not translate into statistically significant differences in acceptance of evolution as measured by the I-SEA. Three subscales contained within the Inventory of Student Evolution Acceptance are designed to measure student acceptance of microevolution, macroevolution, and human evolution. Students demonstrate higher levels of acceptance of microevolution than macroevolution or human evolution. These findings serve to inform educational leaders and science educators regarding students' worldview and how worldview may inform what students accept as true and valid. The I-SEA serves as a useful educational tool to inform instructional decisions in the biology classroom.
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Date Issued
2017
Identifier
CFE0006792, ucf:51818
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0006792
On-Chip Optical Stabilization of High-Speed Mode-locked Quantum Dot Lasers for Next Generation Optical Networks
Title
On-Chip Optical Stabilization of High-Speed Mode-locked Quantum Dot Lasers for Next Generation Optical Networks.
Creator
Ardey, Abhijeet, Delfyett, Peter, Chow, Lee, Peale, Robert, Likamwa, Patrick, University of Central Florida
Abstract / Description
Monolithic passively mode-locked colliding pulse semiconductor lasers generating pico- to sub-picosecond terahertz optical pulse trains are promising sources for future applications in ultra-high speed data transmission systems and optical measurements. However, in the absence of external synchronization, these passively mode-locked lasers suffer from large amplitude and timing jitter instabilities resulting in broad comb linewidths, which precludes many applications in the field of coherent...
Show moreMonolithic passively mode-locked colliding pulse semiconductor lasers generating pico- to sub-picosecond terahertz optical pulse trains are promising sources for future applications in ultra-high speed data transmission systems and optical measurements. However, in the absence of external synchronization, these passively mode-locked lasers suffer from large amplitude and timing jitter instabilities resulting in broad comb linewidths, which precludes many applications in the field of coherent communications and signal processing where a much narrower frequency line set is needed. In this dissertation, a novel quantum dot based coupled cavity laser is presented, where for the first time, four-wave mixing (FWM) in the monolithically integrated saturable absorber is used to injection lock a monolithic colliding pulse mode-locked (CPM) laser with a mode-locked high-Q ring laser. Starting with a passively mode-locked master ring laser, a stable 30 GHz optical pulse train is generated with more than 10 dB reduction in the RF noise level at 20 MHz offset and close to 3-times reduction in the average optical linewidth of the injection locked CPM slave laser. The FWM process is subsequently verified experimentally and conclusively shown to be the primary mechanism responsible for the observed injection locking. Other linear scattering effects are found to be negligible, as predicted in the orthogonal waveguide configuration. The novel injection locking technique is further exploited by employing optical hybrid mode-locking and increasing the Q of the master ring cavity, to realize an improved stabilization architecture. Dramatic reduction is shown with more than 14-times reduction in the photodetected beat linewidth and almost 5-times reduction in the optical linewidth of the injection locked slave laser with generation of close to transform limited pulses at ~ 30 GHz. These results demonstrate the effectiveness of the novel injection locking technique for an all-on-chip stability transfer and provides a new way of stabilizing monolithic optical pulse sources for applications in future high speed optical networks.
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Date Issued
2014
Identifier
CFE0005299, ucf:50518
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0005299
Impact of Ionizing Radiation and Electron Injection on Carrier Transport Properties in Narrow and Wide Bandgap Semiconductors
Title
Impact of Ionizing Radiation and Electron Injection on Carrier Transport Properties in Narrow and Wide Bandgap Semiconductors.
Creator
Lee, Jonathan, Flitsiyan, Elena, Chernyak, Leonid, Peale, Robert, Orlovskaya, Nina, University of Central Florida
Abstract / Description
This study investigated the minority carrier properties of wide and narrow bandgap semiconductors. Included specifically are wide bandgap materials GaN and ?-Ga2O3, and narrow bandgap InAs/GaSb type-II strain-layer superlattice. The importance of minority carrier behavior in bipolar device performance is utmost because it is the limiting component in current conduction. The techniques used to determine minority carrier properties include electron beam induced current (EBIC) and...
Show moreThis study investigated the minority carrier properties of wide and narrow bandgap semiconductors. Included specifically are wide bandgap materials GaN and ?-Ga2O3, and narrow bandgap InAs/GaSb type-II strain-layer superlattice. The importance of minority carrier behavior in bipolar device performance is utmost because it is the limiting component in current conduction. The techniques used to determine minority carrier properties include electron beam induced current (EBIC) and cathodoluminescence (CL) spectroscopy. The CL spectroscopy is complemented with time-resolved CL (TRCL) for direct measurement of carrier radiative recombination lifetime. The minority carrier properties and effect of high energy radiation is explored. The GaN TRCL results suggested an activation energy effecting carrier lifetime of about 90 meV which is related to nitrogen vacancies. The effects of 60Co gamma radiation are demonstrated and related to the effects of electron injection in GaN-based devices. The effects of various high energy radiations upon Si-doped ?-Ga2O3 minority carrier diffusion length and radiative lifetime are measured. The non-irradiated sample thermal activation energies found for minority carrier diffusion length were 40.9 meV, related to shallow Si-donors in the material. The CL results demonstrate that the bandgap of 4.9 eV is slightly indirect. The thermal activation energy decreased on 1.5 MeV electron irradiation but increased for 10 MeV proton irradiation. The increase in energy was related to higher order defects and their complexes, and influenced recombination lifetime significantly. Finally, the diffusion length is reported for narrow bandgap InAs/GaSb superlattice structure and the effect of 60Co gamma radiation is demonstrated.In general, the defects introduced by high energy radiations decreased minority carrier diffusion length, except for 60Co gamma on AlGaN/GaN HEMT devices and high-temperature proton irradiated ?-Ga2O3.
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Date Issued
2018
Identifier
CFE0007217, ucf:52239
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0007217
Interpersonal Behavior Traits and Their Relationship to Administrator-to-Teacher Feedback: A Quantitative Study
Title
Interpersonal Behavior Traits and Their Relationship to Administrator-to-Teacher Feedback: A Quantitative Study.
Creator
Walker, Robert, Murray, Barbara, Murray, Kenneth, Baldwin, Lee, Myers, Mary, University of Central Florida
Abstract / Description
The purpose of this study was to explore what, if any, relationship exists between the interpersonal behavior traits held by administrators and the quality of the feedback they provide to teachers. The Interpersonal Behavior Survey (IBS) was used to develop interpersonal behavior profiles for all the school-based administrators from a moderately sized school district who consented to participate in the study. Additionally, the comments submitted as feedback to teachers by the participating...
Show moreThe purpose of this study was to explore what, if any, relationship exists between the interpersonal behavior traits held by administrators and the quality of the feedback they provide to teachers. The Interpersonal Behavior Survey (IBS) was used to develop interpersonal behavior profiles for all the school-based administrators from a moderately sized school district who consented to participate in the study. Additionally, the comments submitted as feedback to teachers by the participating administrators were reviewed and scored using a rubric.Multiple regression analysis was performed to determine what, if any, relationship exists between the traits measured by the IBS and feedback quality. The IBS is divided into four scales: validity, assertiveness, aggressiveness, and relationship. These groupings were used to formulate the four research questions that guided this study: (1) what, if any, relationship exists between assertiveness traits and feedback quality, (2) what, if any, relationship exists between aggressiveness traits and feedback quality, (3) what, if any, relationship exists between relationship traits and feedback quality, and (4) what, if any, relationship exists between scores above the cut-off for reliability on any of the three validity scales and the quality of feedback given. No significant relationship was found to exist between any of the four IBS scale groupings and feedback quality; however, power analysis showed the lack of significance observed in this study could be due to the size of the population and not a true lack of significance. The study did find a significantrelationship between age and years of experience in administration and feedback quality. iiiThis study is valuable in that it contributes to the conversation regarding teacher effectiveness ratings, feedback, and sheds light on the role interpersonal behavior traits held by the administrator play in the feedback giving process. This study suggests there is reason to continue exploring the important role conflict avoidance may play in teacher evaluation and teacher effectiveness ratings.
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Date Issued
2018
Identifier
CFE0007111, ucf:51957
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0007111
Prediction of survival of early stages lung cancer patients based on ER beta cellular expressions and epidemiological data
Title
Prediction of survival of early stages lung cancer patients based on ER beta cellular expressions and epidemiological data.
Creator
Martinenko, Evgeny, Shivamoggi, Bhimsen, Chow, Lee, Peale, Robert, Brandenburg, John, University of Central Florida
Abstract / Description
We attempted a mathematical model for expected prognosis of lung cancer patients based ona multivariate analysis of the values of ER-interacting proteins (ERbeta) and a membranebound, glycosylated phosphoprotein MUC1), and patients clinical data recorded at the timeof initial surgery. We demonstrate that, even with the limited sample size available to use,combination of clinical and biochemical data (in particular, associated with ERbeta andMUC1) allows to predict survival of lung cancer...
Show moreWe attempted a mathematical model for expected prognosis of lung cancer patients based ona multivariate analysis of the values of ER-interacting proteins (ERbeta) and a membranebound, glycosylated phosphoprotein MUC1), and patients clinical data recorded at the timeof initial surgery. We demonstrate that, even with the limited sample size available to use,combination of clinical and biochemical data (in particular, associated with ERbeta andMUC1) allows to predict survival of lung cancer patients with about 80% accuracy whileprediction on the basis of clinical data only gives about 70% accuracy. The present work canbe viewed as a pilot study on the subject: since results conrm that ER-interacting proteinsindeed inuence lung cancer patients' survival, more data is currently being collected.
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Date Issued
2011
Identifier
CFE0004134, ucf:49120
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0004134
Characterization of gold black and its application in un-cooled infrared detectors
Title
Characterization of gold black and its application in un-cooled infrared detectors.
Creator
Panjwani, Deep, Peale, Robert, Chow, Lee, Del Barco, Enrique, Schoenfeld, Winston, University of Central Florida
Abstract / Description
Gold black porous coatings were thermally evaporated in the chamber backfilled with inert gas pressure and their optical properties were studied in near-far-IR wavelengths. The porosities of coatings were found to be extremely high around ~ 99%. Different approaches of effective medium theories such as Maxwell-Garnett, Bruggeman, Landau-Lifshitz-Looyenga and Bergman Formalism were utilized to calculate refractive index (n) and extinction coefficient (k). The aging induced changes on...
Show moreGold black porous coatings were thermally evaporated in the chamber backfilled with inert gas pressure and their optical properties were studied in near-far-IR wavelengths. The porosities of coatings were found to be extremely high around ~ 99%. Different approaches of effective medium theories such as Maxwell-Garnett, Bruggeman, Landau-Lifshitz-Looyenga and Bergman Formalism were utilized to calculate refractive index (n) and extinction coefficient (k). The aging induced changes on electrical and optical properties were studied in regular laboratory conditions using transmission electron microscopy, Fourier transform infrared spectroscopy, and fore-probe electrical measurements. A significant decrease in electrical resistance in as deposited coating was found to be consistent with changes in the granular structure with aging at room temperature. Electrical relaxation model was applied to calculate structural relaxation time in the coatings prepared with different porosities. Interestingly, with aging, absorptance of the coatings improved, which is explained using conductivity form of Bergman Formulism. Underlying aim of this work was to utilize gold blacks to improve sensitivity in un-cooled IR sensors consist of pixel arrays. To achieve this, fragile gold blacks were patterned on sub-mm length scale areas using both stenciling and conventional photolithography. Infrared spectral imaging with sub-micron spatial resolution revealed the spatial distribution of absorption across the gold black patterns produced with both the methods. Initial experiments on VOx-Au bolometers showed that, gold black improved the responsivity by 42%. This work successfully establishes promising role of gold black coatings in commercial un-cooled infrared detectors.
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Date Issued
2015
Identifier
CFE0005680, ucf:50197
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0005680
The Impact of Access to Books on the Reading Motivation and Achievement of Urban Elementary Students
Title
The Impact of Access to Books on the Reading Motivation and Achievement of Urban Elementary Students.
Creator
Trimble Spalding, Lee-Anne, Hynes, Michael, Kelley, Michelle, Hoffman, Bobby, Clark, Margaret, Williams, Robert, University of Central Florida
Abstract / Description
The focus of this research was to study the association that reading motivation and reading achievement have with increased access to books provided by the non-profit program Book Trust, could have on urban elementary students, specifically second graders being educated in a large school district in Central Florida. Teacher data collection sheets, the Motivation to Read Profile (MRP): Reading Survey and the Florida Assessment for Instruction in Reading (FAIR) were used to measure the...
Show moreThe focus of this research was to study the association that reading motivation and reading achievement have with increased access to books provided by the non-profit program Book Trust, could have on urban elementary students, specifically second graders being educated in a large school district in Central Florida. Teacher data collection sheets, the Motivation to Read Profile (MRP): Reading Survey and the Florida Assessment for Instruction in Reading (FAIR) were used to measure the aforementioned associations. Findings revealed that increased access to books in these elementary schools did not have a statistically significant impact on reading motivation or reading achievement scores. In addition, teachers' demographic data, such as age, number of years teaching or highest degree held, did not impact their student reading achievement.
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Date Issued
2012
Identifier
CFE0004611, ucf:49933
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0004611