Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

University of Central Florida

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 2671 - 2700 of 7705

Full-Text Articles in Entire DC Network

Quantum Chemical Studies For The Engineering Of Metal Organic Materials, Hector Javier Rivera Jacquez Jan 2015

Quantum Chemical Studies For The Engineering Of Metal Organic Materials, Hector Javier Rivera Jacquez

Electronic Theses and Dissertations

Metal Organic Materials (MOM) are composed of transition metal ions as connectors and organic ligands as linkers. MOMs have been found to have high porosity, catalytic, and optical properties. Here we study the gas adsorption, color change, and non-linear optical properties of MOMs. These properties can be predicted using theoretical methods, and the results may provide experimentalists with guidance for rational design and engineering of novel MOMs. The theory levels used include semi-empirical quantum mechanical calculations with the PM7 Hamiltonian and, Density Functional Theory (DFT) to predict the geometry and electronic structure of the ground state, and Time Dependent DFT …

Go to article

Parallel Fabrication And Transport Properties Of Carbon Nanotube Single Electron Transistors, Muhammad Islam Jan 2015

Parallel Fabrication And Transport Properties Of Carbon Nanotube Single Electron Transistors, Muhammad Islam

Electronic Theses and Dissertations

Single electron transistors (SET) have attracted significant attention as a potential building block for post CMOS nanoelectronic devices. However, lack of reproducible and parallel fabrication approach and room temperature operation are the two major bottlenecks for practical realization of SET based devices. In this thesis, I demonstrate large scale single electron transistors fabrication techniques using solution processed single wall carbon nanotubes (SWNTs) and studied their electron transport properties. The approach is based on the assembly of individual SWNTs via dielectrophoresis (DEP) at the selected position of the circuit and formation of tunnel barriers on SWNT. Two different techniques: i) metal-SWNT …

Go to article

Nanoelectronic Devices Using Carbon Nanotubes And Graphene Electrodes: Fabrication And Electronic Transport Investigations, Narae Kang Jan 2015

Nanoelectronic Devices Using Carbon Nanotubes And Graphene Electrodes: Fabrication And Electronic Transport Investigations, Narae Kang

Electronic Theses and Dissertations

Fabrication of high-performance electronic devices using the novel semiconductors is essential for developing future electronics which can be applicable in large-area, flexible and transparent displays, sensors and solar cells. One of the major bottlenecks in the fabrication of high-performance devices is a large interfacial barrier formation at metal/semiconductor interface originated from Schottky barrier and interfacial dipole barrier which causes inefficient charge injection at the interface. Therefore, having a favorable contact at electrode/semiconductor is highly desirable for high-performance devices fabrication. In this dissertation, the fabrication of nanoelectronic devices and investigation of their transport properties using carbon nanotubes (CNTs) and graphene as …

Go to article

The Forging Of Modern Broadway Sound Design Techniques Amid The Fires Of The Rock Musicals In The Late 1960s And 1970s., Timothy Tracey Jan 2015

The Forging Of Modern Broadway Sound Design Techniques Amid The Fires Of The Rock Musicals In The Late 1960s And 1970s., Timothy Tracey

Electronic Theses and Dissertations

From the ancient Greek theater, through the dawn of the Renaissance, beyond the development of Shakespearean theater, to the Broadway theater boon in the 1920s, sound reinforcement within the theater remained virtually unchanged. Through Broadway's Golden Age, directors and producers relied on architectural acoustics to carry sound throughout the theaters. This is not surprising given that most of the theaters were built in the early 1900s, before the invention of any electric sound reinforcement technology. Moreover, early attempts at amplification in the 1940s yielded dismal results. Eventually, the maturation of the integrated book musical and the invasion of the rock …

Go to article

Providing Cultural Balance For Young Americans, Mark Nichols Jan 2015

Providing Cultural Balance For Young Americans, Mark Nichols

Electronic Theses and Dissertations

Children today are increasingly being introduced to tablets and other personal electronic devices at very young ages. Due in part to this, the entertainment industry now has a near ubiquitous presence in America compared to cultural arts. Its influence on the development of children is almost impossible to ignore. My thesis will study an approach to engaging young people by way of location-based projects that synthesize two or more art forms (e.g. theatre arts, literary arts, visual arts) in order to provide a unified effort for cultural arts and also provide balance to the influences of entertainment. Incorporating research, interviews …

Go to article

Folate Conjugated Hyperbranched Polyester Nanoparticles For Prostate Tumor-Targeted Delivery Of A Cytotoxic Peptide Via Prostate Specific Membrane Antigen, Orielyz Flores-Fernandez Jan 2015

Folate Conjugated Hyperbranched Polyester Nanoparticles For Prostate Tumor-Targeted Delivery Of A Cytotoxic Peptide Via Prostate Specific Membrane Antigen, Orielyz Flores-Fernandez

Electronic Theses and Dissertations

Prostate Cancer is the second most deadly cancer in men, after lung cancer. The need for new and effective therapeutics that can constrain prostate cancer progression are challenged by the lack of suitable delivery strategies that target prostate cancer tissue. To study CT20p as potential chemotherapeutic agent in the treatment of prostate cancer we proposed the use of targetable hyperbranched polyester (HBPE) based nanoparticles as delivery system. Folic acid was conjugated to the nanocarrier to improve the selectivity of the nanoparticle towards specific cell surface targets in prostate cancer cell lines. Specifically we evaluated LNCaP that up-regulated the PSMA receptor. …

Go to article

Analysis And Simulation For Homogeneous And Heterogeneous Sir Models, Joseph Wilda Jan 2015

Analysis And Simulation For Homogeneous And Heterogeneous Sir Models, Joseph Wilda

Electronic Theses and Dissertations

In mathematical epidemiology, disease transmission is commonly assumed to behave in accordance with the law of mass action; however, other disease incidence terms also exist in the literature. A homogeneous Susceptible-Infectious-Removed (SIR) model with a generalized incidence term is presented along with analytic and numerical results concerning effects of the generalization on the global disease dynamics. The spatial heterogeneity of the metapopulation with nonrandom directed movement between populations is incorporated into a heterogeneous SIR model with nonlinear incidence. The analysis of the combined effects of the spatial heterogeneity and nonlinear incidence on the disease dynamics of our model is presented …

Go to article

Development Of An Automated Method For Identification Of Wet And Dry Channel Segments Using Lidar Data And Fuzzy Logic Cluster Analysis, Chris Rowney Jan 2015

Development Of An Automated Method For Identification Of Wet And Dry Channel Segments Using Lidar Data And Fuzzy Logic Cluster Analysis, Chris Rowney

Electronic Theses and Dissertations

Research into the use of LiDAR data for purposes other than simple topographic elevation determination, such as urban land cover classification and the identification of forest biomass, has become prominent in recent years. In many cases, alternative analysis methodologies conducted using airborne LiDAR data are possible because the raw data collected during a survey can include information other than the classically used elevation and coordinate points, the X, Y, and Z of the plane. In particular, intensity return values for each point in a LiDAR grid have been found to provide a useful data set for wet and dry channel …

Go to article

Timp-1 Activates A Unique Cardiac Stem Cell Population, Cd63+Ve/C-Kit+Ve, Thereby Enhancing Cardiac Differentiation, And Protects The Heart From Adverse Cardiac Remodeling Following Myocardial Infarction, Latifa Abdelli Jan 2015

Timp-1 Activates A Unique Cardiac Stem Cell Population, Cd63+Ve/C-Kit+Ve, Thereby Enhancing Cardiac Differentiation, And Protects The Heart From Adverse Cardiac Remodeling Following Myocardial Infarction, Latifa Abdelli

Electronic Theses and Dissertations

We previously demonstrated that embryonic stem (ES) cells over-expressing tissue inhibitor of metalloproteinase-1 (TIMP-1) have increased potential to engraft and differentiate into cardiac myocytes following transplantation into the infarcted heart. However, the ability of TIMP-1 to activate endogenous stem cells and enhance their differentiation into cardiac regenerative cell types is still unknown. We postulate that TIMP-1 may additionally activate a stem cell population that enhances cardiac cell type differentiation in the infarcted myocardium. To prove this hypothesis, we isolated c-kit+ve cells from four weeks old C57BL/6 mice and cultured them in vitro in presence of ES conditioned media (ESCM), ES-TIMP-1-CM …

Go to article

Critical Velocity Is Associated With Combat Specific Performance Measures In A Special Forces Unit, Mattan Hoffman Jan 2015

Critical Velocity Is Associated With Combat Specific Performance Measures In A Special Forces Unit, Mattan Hoffman

Electronic Theses and Dissertations

Over recent years, military research has focused on ways of being able to predict operational success and readiness through the development of simulated operational tasks measuring the physical limits of the soldier. Therefore, to properly prepare the tactical athlete for the demands and rigor of combat, accurate assessment of baseline physical abilities and limitations are necessary. Currently, western armies use a basic physical fitness test, which has been heavily argued to have no bearing on operational readiness, thus they are in the process of transitioning to a more specific combat readiness test. However, specific assessments to predict operational success/readiness are …

Go to article

Collection Development Policy, Curriculum Materials Center, Yolanda Hood Jan 2015

Collection Development Policy, Curriculum Materials Center, Yolanda Hood

Libraries' Documents

No abstract provided.

Go to article

Lobbying As A Means For Expanding The Communication Instructional Base. A View From The Outside Looking In, Craig Newburger Jan 2015

Lobbying As A Means For Expanding The Communication Instructional Base. A View From The Outside Looking In, Craig Newburger

Journal of the Association for Communication Administration

No abstract provided.

Go to article

Scheduling And Cooperative Control Of Electric Vehicles' Charging At Highway Service Stations, Florida Solar Energy Center, Azwirman Gusrialdi Dec 2014

Scheduling And Cooperative Control Of Electric Vehicles' Charging At Highway Service Stations, Florida Solar Energy Center, Azwirman Gusrialdi

FSEC Energy Research Center®

This is a re-print version of a publication for the 53rd IEEE Conference on Decision and Control, Los Angeles, California, USA, December 15-17, 2014. Due to their limited ranges, electric vehicles (EVs)need to be periodically charged during their long-distance travels on a highway. Compared to the fossil-fuel powered vehicles, the charging of a single EV takes much more time(up to 30 mins versus 2 mins). As the number of EVs on highways increases, adequate charging infrastructure needs to be put in place. Nonetheless waiting times for EVs to get charged at service stations could still vary significantly unless an appropriate …

Go to article

Methods And Materials For Increasing Potency Of Cells (Con 1), Kiminobu Sugaya, Angel Alvarez Dec 2014

Methods And Materials For Increasing Potency Of Cells (Con 1), Kiminobu Sugaya, Angel Alvarez

UCF Patents

Disclosed herein are methods and materials for producing a more developmentally potent cell from a less developmentally potent cell. Specifically exemplified herein are methods that comprise introducing an expressible dedifferentiating polynucleotide sequence into a less developmentally potent cell, wherein the transfected less developmentally potent cell becomes a more developmentally potent cell capable of differentiating to a less developmentally potent cell of its lineage of origin or a different lineage.

Go to article

A Price-Volume Model For A Single-Period Stock Market, Yun Chen-Shue Dec 2014

A Price-Volume Model For A Single-Period Stock Market, Yun Chen-Shue

HIM 1990-2015

The intention of this thesis is to provide a primitive mathematical model for a financial market in which tradings affect the asset prices. Currently, the idea of a price-volume relationship is typically used in the form of empirical models for specific cases. Among the theoretical models that have been used in stock markets, few included the volume parameter. The thesis provides a general theoretical model with the volume parameter for the intention of a broader use. The core of the model is the correlation between trading volume and stock price, indicating that volume should be a function of the stock …

Go to article

Synthesizing The Music Integration Research To Explore Five Common Themes In Intermediate Elementary Classrooms, Alexandria Harkins Dec 2014

Synthesizing The Music Integration Research To Explore Five Common Themes In Intermediate Elementary Classrooms, Alexandria Harkins

HIM 1990-2015

Much scientific research has been conducted to examine the effects of music on the brain and abilities of people. The results have shown a positive correlation between music used in various ways and the abilities and skills of people, especially children. However, the use of music in the general intermediate classroom is lacking. After reviewing scientific research to provide a foundation for the study and synthesizing the five Music Integration Practices, two teachers were interviewed and observed on their use of music in their general intermediate classrooms. The interviews, observation checklists, and anecdotal notes taken by the researcher provide music …

Go to article

Why Evidence Matters: Examining The Knowledge And Perception Of Pre-Service Teachers, Stefanie Campbell Dec 2014

Why Evidence Matters: Examining The Knowledge And Perception Of Pre-Service Teachers, Stefanie Campbell

HIM 1990-2015

Evidence-based educational policymaking has become a global phenomenon (Wiseman, 2010). According to the Institute of Education Sciences, evidence-based education is "an integration of the professional wisdom and the best available empirical evidence on making decision about how to deliver instructions" (IES, US Department of Education, 2012). This suggests that best practice requires teachers to ensure that instructional strategies and programs implemented in their classroom have been studied in scientific experiments to determine their effectiveness. The general public, as well as practicing teachers, holds an assumption that educators have knowledge as to what is evidence-based education. However, this is not always …

Go to article

Media Sensationalism And Its Implications On The Public Understanding Of Science, Christopher Barsoum Dec 2014

Media Sensationalism And Its Implications On The Public Understanding Of Science, Christopher Barsoum

HIM 1990-2015

Myths, misinformation, and sensationalism. These are common enemies that directly inhibit the public understanding of science. In particular, the media is often responsible for mishandling or otherwise misrepresenting scientific information, historically and presently speaking. Many sources can combat the public understanding of science through pseudoscientific means. This includes but is not limited to religion, the media, politics, or just simple hearsay. For example, Young Earth creationism is deeply rooted in Christian theology, but the beliefs hold no scientific basis. Yet, almost half of Americans still believe in Young Earth creationism. Another such example is anti-vaccination campaigns due to fears of …

Go to article

A Comparison Of Teacher Perceptions Of Middle School Mathematics Textbooks In The United States And The United Kingdom, Porscha Clonts Dec 2014

A Comparison Of Teacher Perceptions Of Middle School Mathematics Textbooks In The United States And The United Kingdom, Porscha Clonts

HIM 1990-2015

This study was a qualitative research study dedicated to the deep investigation of a regular and advanced seventh grade mathematics textbook used in Florida and the United Kingdom. A questionnaire was created for a teacher in both locations, along with the researcher, to rate the textbooks according to different characteristics. The two research questions that were answered through the research include: 1. In what ways, if any, is diversity represented in the pages of each seventh grade mathematics textbooks examined? a. In what ways is the diversity of each textbook comparable to the observed diversity of the country in which …

Go to article

Text Complexity And Close Reading: Teachers' Perceptions Of The Language Arts Florida Standards And Curriculum Implementation, Clare Diaz-Davila Dec 2014

Text Complexity And Close Reading: Teachers' Perceptions Of The Language Arts Florida Standards And Curriculum Implementation, Clare Diaz-Davila

HIM 1990-2015

The Florida Department of Education revised the Common Core State Standards into what are now known as the Florida Standards in February 2014, approving 99 revisions to the original standards that were accepted in 2010 (Dunkelberger, 2014). The purpose of this research was to identify current teachers# attitudes towards the new Language Arts Florida Standards (LAFS), specifically regarding teachers# perceptions of text complexity and close reading as enacted in the reading curriculum. Additionally, this study will attempt to identify how teachers# attitudes impact their implementation of the new standards. This research used a self-administered survey to collect the teacher perceptions …

Go to article

Predicting Science Literacy And Science Appreciation, Robert Hellmuth Dec 2014

Predicting Science Literacy And Science Appreciation, Robert Hellmuth

HIM 1990-2015

Research has shown that the benefits of having a populace literate in science are great. Even if citizens are not literate in basic science, it is important that citizens still appreciate science and those with expertise in the field for many reasons. Recent research suggests that the United States (U.S.) has lower levels of science literacy than it should. Evidence may also suggest that many U.S. citizens are not appreciative of science. Overall, little research has been conducted on what may predict science literacy and science appreciation which is the aim of this research. Specifically, I have examined socio-personal variables, …

Go to article

Investing In An Interconnected Workforce: Global Education Reform, Amelia Klug Dec 2014

Investing In An Interconnected Workforce: Global Education Reform, Amelia Klug

HIM 1990-2015

Regardless of culture, socio-economic background, and quality of life, all students deserve the highest quality of education. But the reality is, many education systems around the world do not offer it. Investing in structural reforms in education has the potential to boost economic growth in countries around the world. By learning from different education systems strengths and weaknesses, policy decisions can be made that ensure students are given the opportunity for higher educational outcomes. This study analyzes high, middle, and low quality education systems around the world and the infrastructures that lead to educational success or failure. Fifteen education systems …

Go to article

Elementary Pre-Service Teachers' Perceptions Of Thematic Unit Instruction Versus Single-Subject Instruction, Shana Shea Dec 2014

Elementary Pre-Service Teachers' Perceptions Of Thematic Unit Instruction Versus Single-Subject Instruction, Shana Shea

HIM 1990-2015

The focus of this research project was to determine whether thematic unit instruction or traditional, single-subject instruction was perceived to be the more effective and engaging way of teaching as decided by pre-service teachers. Research has shown that incorporating multiple subjects into one unit or topic of study helps to create more engagement and connections to which students can relate. In creating these connections, students can relate the content to their real life and in turn, better comprehend and retain the material. The pre-service teachers attend the University of Central Florida's College of Education and Human Performance. They voluntarily participated …

Go to article

The Changes That Preservice Teachers Have Seen In The Attitudes Of Teachers About Social Studies In Elementary Schools, Katherine Syracuse Dec 2014

The Changes That Preservice Teachers Have Seen In The Attitudes Of Teachers About Social Studies In Elementary Schools, Katherine Syracuse

HIM 1990-2015

Ever since national legislation has become involved in the testing of our students, the face of social studies education in elementary school classrooms has changed drastically. With the passage of Goals 2000 in 1993, social studies instruction in elementary school classrooms has seen a steep decline in the time allotted. Also, the attitude of administrators and teachers in elementary schools has taken away the importance of social studies in the classroom. While social studies has seen a big change in the amount of time dedicated to instruction in the past 20 years, there is still hope for the important topics …

Go to article

It's A Small World After All – And We're All Connected, Alaina Bernard Nov 2014

It's A Small World After All – And We're All Connected, Alaina Bernard

UCF Forum

We’ve probably all had the song “it’s a small world” stuck in our heads after visiting Fantasyland at Walt Disney World. This simple song highlights how we all are connected, and was created to promote the message of international peace and inclusion of diversity. Walt Disney sped up the tempo from the original version and made it more cheery, but it is arguably a simple message that we continue to strive for decades later.

Go to article

Electric Vehicle Life Cycle Cost Assessment, Florida Solar Energy Center, Richard Raustad Sep 2014

Electric Vehicle Life Cycle Cost Assessment, Florida Solar Energy Center, Richard Raustad

FSEC Energy Research Center®

The Electric Vehicle Transportation Center (EVTC) has developed a life cycle cost (LCC) model to include all reasonable costs associated with vehicle ownership over a 5, 10, 15, or 20-year period. The EVTC LCC model compares ownership costs of conventional vehicles to plug-in hybrid and battery electric vehicles. Internal combustion engines using gasoline, ethanol, or diesel are considered. The analysis includes costs for tires, insurance and maintenance, federal incentives, state tax, dealership fee, and financed interest payments. Traction battery replacement costs are difficult to ascertain yet are included to investigate their impact on overall life cycle costs. Economic factors used …

Go to article

Get Outside The Box – And Go Outside!, Alaina Bernard Sep 2014

Get Outside The Box – And Go Outside!, Alaina Bernard

UCF Forum

We live in a fast-paced society, driven by technology and air conditioners. What would be the motivation for someone to get outside their box and go outside?

Go to article

Signal Processing Using Spectrally Phase Encoded Optical Frequency Combs, Peter Delfyett Aug 2014

Signal Processing Using Spectrally Phase Encoded Optical Frequency Combs, Peter Delfyett

UCF Patents

Methods, apparatus and systems for an optical system for data harvesting and pattern recognition. The system includes a mode locked laser for producing a comb of optical frequencies that is split into two identical combs, a wavelength division demultiplexer eparate the individual optical frequency components of one comb and modulates each optical frequency component with a different one of plural target objects. A second modulator modulates an input signal with the second comb and an optical splitter splits the modulated signal into plural optical frequency components each containing the input signal. An optical combiner simultaneously combines the components containing the …

Go to article

King Leopold Ii's Exploitation Of The Congo From 1885 To 1908 And Its Consequences, Steven Johnson Aug 2014

King Leopold Ii's Exploitation Of The Congo From 1885 To 1908 And Its Consequences, Steven Johnson

HIM 1990-2015

This thesis argues that King Leopold II, in his exploitation of the Congo, dealt the Congo a future of political, ethnic, and economic destabilization. At one time consisting of unified and advanced kingdoms, the Congo turned to one completely beleaguered by poverty and political oppression. Leopold acquired the Congo through unethical means and thus took the people's chances away at self-rule. He provided for no education or vocational training, which would stunt future Congolese leaders from making sound economic and political policies. Leopold also exploited the Congo with the help of concession companies, both of which used forced labor to …

Go to article

What Is The Efficacy Of Peer Presentation For English Languag Learners?, Courtney Roy Aug 2014

What Is The Efficacy Of Peer Presentation For English Languag Learners?, Courtney Roy

HIM 1990-2015

This study investigates whether the learning strategy of Peer Presentations may positively influence an English Language Learner’s (ELL's) relationship with peers, and personal perspec-tives with pertinence to the sciences, public discourse, and their institution. Data collection in-struments included a developed pre- and post-sociometric survey to quantitate each classroom's social status, and a pre- and post-qualitative oral interview to acquire individual perceptions con-cerning enjoyment and contentment of academic topics. Three ELLs from two learning environ-ments participated with the eight day intervention, comprising of 45 minute instructive sessions to become proficient with demonstrating an arrangement of invigorating yet harmless scientific experiments. After …

Go to article

First Prev Next Last