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Cuff-less Blood Pressure Measurement Using a Smart Phone
Blood pressure is vital sign information that physicians often need as preliminary data for immediate intervention during emergency situations or for regular monitoring of people with cardiovascular diseases. Despite the availability of portable blood pressure meters in the market, they are not regularly carried by people, creating a need for an ultra-portable measurement platform or device that can be easily carried and used at all times. One such device is the smartphone which, according to comScore survey is used by 26.2% of the US adult population. the mass production of these phones with built-in sensors and high computation power has created numerous possibilities for application development in different domains including biomedical. Motivated by this capability and their extensive usage, this thesis focuses on developing a blood pressure measurement platform on smartphones. Specifically, I developed a blood pressure measurement system on a smart phone using the built-in camera and a customized external microphone. the system consists of first obtaining heart beats using the microphone and finger pulse with the camera, and finally calculating the blood pressure using the recorded data. I developed techniques for finding the best location for obtaining the data, making the system usable by all categories of people. the proposed system resulted in accuracies between 90-100%, when compared to traditional blood pressure meters. the second part of this thesis presents a new system for remote heart beat monitoring using the smart phone. with the proposed system, heart beats can be transferred live by patients and monitored by physicians remotely for diagnosis. the proposed blood pressure measurement and remote monitoring systems will be able to facilitate information acquisition and decision making by the 9-1-1 operators.
Teaching Past the Test: a Pedagogy of Critical Pragmatism
Existent scholarship in communication studies has failed to adequately address the particular pedagogical context of current public secondary education within the United States. While communication studies has produced a great deal of scholarship centered within the framework of critical pedagogy, these efforts fail to offer public high school teachers in the U.S. a tenable alternative to standardized constructs of educational communication. This thesis addresses the need for a workable, critical pedagogy in this particular educational context as a specific question of educational communication. a theorization of pedagogical action drawing from critical pedagogy, pragmatism, and communication studies termed “critical pragmatism” is offered as an effective, critical counter point to current neoliberal classroom practices in U.S. public secondary schools.
Sun (1966): Eight Poems in One Movement for Solo Voice and Orchestra By Ned Rorem: Background, Analysis, and Performance Guide
The purpose of the document is to present Ned Rorem’s Sun (1966): Eight Poems in One Movement for Solo Voice and Orchestra. the eight songs are “To the Sun,” “Sun of the Sleepless,” “Dawn,” “Day,” “Catafalque,” “Full Many a Glorious Morning,” “Sundown Lights,” and “From What Can I Tell My Bones?” the document is divided into four main chapters: 1) Background; 2) Poet and Poem Background; 3) Musical Analysis; 4) Performance Guide. Chapter 1 contains biographical information on Ned Rorem, and basic information of the work, Sun. Here, a relationship between the eight songs is presented. Chapter 2 discusses biography of poet and background of the poem. the poetry is examined to determine the theme and to identify imagery, and metaphor. Chapter 3 offers detailed musical analysis for each of the eight songs and interludes. Chapter 4 provides performance guide which offers assistance in forming personal interpretation and brief specifies to singers who wish to perform this work. Appendix a includes tonality, difficulty, tempo, form, theme, range, and orchestration of each song and interlude. This study serves as a reference guide for performers of Sun.
Analysis of Roger-ducasse’s Pastorale Pour Orgue
Pastorale pour Orgue (1909) is Jean Jules Aimable Roger-Ducasse’s only solo organ composition, which demonstrates skillful use of organ colors and demands a virtuoso technique for performance. Writing Pastorale in 1909, Roger-Ducasse synthesized compositional styles and techniques of two very different compositional approaches – impressionism and classicism. This study examines the stylistic characteristics of Pastorale by Roger-Ducasse as examples of both of these influences. the synthesis in Pastorale is primarily evident in the combination of classical forms and generic references with impressionist harmony and color. Thus, examining these musical elements provides hitherto unexplored insights into Pastorale as a master solo organ work of the early twentieth century. the dissertation is divided into four chapters. the first chapter presents the purpose, the significance, and the state of research of the piece. in the second chapter, I examine the traits of classicism through genre, form, thematic variation and other classicist elements of the composition. the third chapter presents the traits of impressionism including harmonic parallelism, extended chords, pedal points, ostinatos, and whole-tone scales. in the fourth chapter, I summarize the study and make a suggestion for further research of the piece.
An Analysis of the Correspondence Between the Measures Collected by an Autism Treatment Center and its Stated Mission Goals
This study was a program evaluation for an autism treatment center for the period of April 2008 through August 2011. the study extended previous evaluations of the autism treatment center. the purpose of this evaluation was to determine the degree to which the center’s measures corresponded with its stated mission goals. a number of data sources were reviewed including client records of demographic and outcome information. Findings suggest the center maintained records that allow for the evaluation of most of its mission’s goals. There were, however, difficulties with data collection, storage, and retrieval. the present program evaluation found that missing information and lack of follow-up information hindered efforts toward mission evaluation.
Establishing Editorial Principles to Create a Performance Edition of Selections From Appunti Op 210 By Mario Castelnuovo-tedesco
This paper examined editorial methods used in producing published versions of the music of Mario Castelnuovo-Tedesco (1895-1968). From this examination, I established some editorial principles to create a performance edition of five movements from book two of Castelnuovo-Tedesco’s Appunti op. 210. This paper includes a discussion of the sources and methods used in establishing editorial criteria. at the request of the Milanese guitarist Ruggero Chiesa (1933-1993), Castelnuovo-Tedesco set out to create a collection of didactic pieces for young guitarists. the pieces were to be collaboratively edited and fingered by Chiesa, and then given final approval by the composer. Unfortunately, the composer died before finishing the work. the pieces and sketches that survive exist in four volumes published by the Italian house, Suvini Zerboni, containing the pieces that Chiesa edited with the approval of Castelnuovo-Tedesco. the published edition also includes unedited pieces that did not undergo the collaborative process. with the goal of maintaining an unadulterated portrayal of the composer’s intentions, Chiesa presented these pieces as they appear in the manuscript. Much of the music is unidiomatic and either impossible or highly impractical to play. My study established some editorial principles for use in creating a performance edition of this work. the edition includes my engraving of the original unedited manuscript as well as ossia measures containing solutions to performance problems. the suggested solutions balance the perception of the composer’s intentions, established editorial practices, and idiomatic concerns to creating a playable edition.
Go-hyang (Ancestral Home) By David Burge: a Performer’s Guide to Integrating Korean Musical and Cultural Aspects
David Burge (b. 1930) composed the work Go-Hyang (1994) inspired by his impressions of Korea. the purpose of this study is to provide a performance guide particularly for the benefit of non- Korean pianists. Each of the six pieces of Go-Hyang contains Korean musical and/or cultural references. This document details these aspects, obviously stated or implied through the work. Investigation into distinct characteristics and Korean elements of each of the six movements will involve sources from multiple fields. Interviews with both the composer and the pianist Young-Hae Han for whom the work was written answer many questions about performance issues. Once the Korean reference is examined, it will be related to performance consideration of each movement, in order. the result of this examination will provide the performer not only with beneficial information to facilitate the performance but also with some cultural background to enrich the interpretation of the work.
Alternative Complementation in Partially Schematic Constructions: a Quantitative Corpus-based Examination of COME to V2 and GET to V2
This paper examines two English polyverbal constructions, COME to V2 and GET to V2, as exemplified in Examples 1 and 2, respectively. (1) the senator came to know thousands of his constituents (2) Little Johnny got to eat ice cream after every little league game. Previous studies considered these types of constructions (though come and get as used here have not been sufficiently studied) as belonging to a special class of complement constructions, in which the infinitive is regarded as instantiating a separate, subordinate predication from that of the “matrix” or leftward finite verb. These constructions, however, exhibit systematic deviation from the various criteria proposed in previous research. This study uses the American National Corpus to investigate the statistical propensities of the target phenomena via lexico-syntactic (collostructional analysis) and morpho-syntactic (binary logistic regression) features, as captured through the lens of construction grammar.
Nominal Shear Strength of Cold-formed Steel Shear Walls Using Osb Sheathing
In the cold-formed steel construction, the oriented strand board is a common material for shear wall sheathing. an OSB is made by using wood chips as raw materials that undergo high temperature pressing to create a multi-larger structure material. Due to the OSB having a high strength in shear, it is an important material used in the construction field. the thesis is trying to verify published nominal shear strength in AISI-213-07 in the first part. This objective has two parts: the first part is to verify nominal shear strength (Rn) for wind and other in-plane loads for shear wall. the second part is to verify nominal shear strength (Rn) for seismic and other in-plane loads for shear wall. Secondly, the thesis verifies the design deflection equation for nominal shear strength of CFS shear walls with OSB sheathing. the test specimens were divided into eight groups which trying to verify the design deflection equation that was published in AISI-213-07 standard.
First Principle Calculations of the Structure and Electronic Properties of Pentacene Based Organic and ZnO Based Inorganic Semiconducting Materials
In this thesis, I utilize first principles density functional theory (DFT) based calculations to investigate the structure and electronic properties including charge transfer behaviors and work function of two types of materials: pentacene based organic semiconductors and ZnO transparent conducting oxides, with an aim to search for high mobility n-type organic semiconductors and fine tuning work functions of ZnO through surface modifications. Based on DFT calculations of numerous structure combinations, I proposed a pentacene and perfluoro-pentacene alternating hybrid structures as a new type of n-type semiconductor. Based on the DFT calculations and Marcus charge transfer theory analysis, the new structure has high charge mobility and can be a promising new n-type organic semiconductor material. DFT calculations have been used to systematically investigate the effect of surface organic absorbate and surface defects on the work function of ZnO. It was found that increasing surface coverage of organic groups and decreasing surface defects lead to decrease of work functions, in excellent agreement with experimental results. First principles based calculations thus can greatly contribute to the investigating and designing of new electronic materials.
Electrostatic Mechanism of Emission Enhancement in Hybrid Metal-semiconductor Light-emitting Heterostructures
III-V nitrides have been put to use in a variety of applications including laser diodes for modern DVD devices and for solid-state white lighting. Plasmonics has come to the foreground over the past decade as a means for increasing the internal quantum efficiency (IQE) of devices through resonant interaction with surface plasmons which exist at metal/dielectric interfaces. Increases in emission intensity of an order of magnitude have been previously reported using silver thin-films on InGaN/GaN MQWs. the dependence on resonant interaction between the plasmons and the light emitter limits the applications of plasmonics for light emission. This dissertation presents a new non-resonant mechanism based on electrostatic interaction of carriers with induced image charges in a nearby metallic nanoparticle. Enhancement similar in strength to that of plasmonics is observed, without the restrictions imposed upon resonant interactions. in this work we demonstrate several key features of this new interaction, including intensity-dependent saturation, increase in the radiative recombination lifetime, and strongly inhomogeneous light emission. We also present a model for the interaction based on the aforementioned image charge interactions. Also discussed are results of work done in the course of this research resulting in the development of a novel technique for strain measurement in light-emitting structures. This technique makes use of a spectral fitting model to extract information about electron-phonon interactions in the sample which can then be related to strain using theoretical modeling.
Children with Autism in Taiwan and the United States: Parental Stress, Parent-child Relationships, and the Reliability of a Child Development Inventory
Autism is one of the fastest growing childhood disorders in the world, and the families that have children with autism experience frustration and stress due to many practical problems. with the increase in the prevalence of autism, it is urgent to raise awareness of autism and to provide services and support for children with autism and their parents to improve the parent-child relationship and moderate the parental stress. with regard to families with children diagnosed as autistic, the purposes of this study are to: (a) examine the group differences in parental stress and parent-child relationship between Taiwan and the United States based on racial and cultural differences; (b) identify factors, if any, that influence the parental stress and parent-children relationship; (c) investigate if there are differences in the results of child development when children are diagnosed with autism in these two countries; (d) establish the Battelle Development Inventory-II in Mandarin Chinese version for use of evaluation with development delays in Taiwan. Findings revealed that: (a) the Battelle Developmental Inventory, Second Edition (BDI-II), is highly reliable with a great value of internal consistency in the use with parents and children with autism in Taiwan; (b) there is no significant difference in child development and parent-child relationship based on geographic region (Taiwan and the United States); (c) parents of children with autism in the United States overall have a more positive parent-child relationship and parenting attitude than parents of children with autism in Taiwan; (d) Children with autism who have a positive relationship with their parents have a higher pass rate on the evaluation of child development; (e) fathers reported higher pass rate on BDI-II than mothers in one of the standard deviations of over BDI-II performance; (f) parent-child relationships are positively correlated with parental stress; (g) parents who received services and …
Theological Higher Education in Liberia: a Case Study of the Liberia Baptist Theological Seminary
The Liberia Baptist Theological Seminary (LBTS), opened on March 4, 1976, exists to train men and women for Christian ministry. It offers four-year degree programs leading to bachelor of arts in theology, bachelor of arts in religious education, and bachelor of divinity. Three major periods characterized its growth and development. the first, from 1976 to 1989, was a period of growth and prosperity. the second, from 1990-2003, was a time of immense challenge for the seminary because of the Liberian Civil War. the final period, from 2003 to the present, shows the seminary attempting to re-position itself for the future as a premier Christian higher education institution in Liberia. One of the challenges remaining, however, is the lack of historical documentation on factors impacting the growth of the seminary. This historical case study research sought to provide a comprehensive overview of the LBTS within the context of theological higher education in Liberia and the Liberian Civil War. the four major purposes guiding this research were: 1. Historical—to document and evaluate the rise, survival, developments and achievements of LBTS; 2. Institutional—to gain insight into how the seminary operates; 3. to document the effects of the 13-year civil war on the seminary; and 4. to identify the perceived challenges and needs of the seminary. Study participants included administrators, faculty, staff, students, graduates, and trustees, both past and present. Data were gathered through semi-structured interviews and document analysis. with thorough analysis of all data, seven major themes surfaced: 1.The lack of funding and qualified national faculty; 2.The relationship between missionaries and nationals; 3. the need for partnership development nationally and internationally; 4. the strong impact of the civil war on the seminary; 5. Realignment of seminary mission; and 6. the need for Bible training center and seminary perseverance during the war. As the …
Examination of Sleep Disparities Among a Racially/ethnically Diverse Sample of Adolescents
Racial, ethnic and gender disparities have been found among a variety of health variables, but to date no study has comprehensively examined whether similar differences exist between sleep variables such as duration, efficiency and quality, in early adolescence. There is a general consensus among previous literature that adolescence is a time when a decrease in total sleep time and an increase in sleep problems are observed. Previous literature, however, mainly focused on the influence of puberty to explain these changes. the current study examined if differences exist between 1462 Caucasian, Hispanic/Latino, and African American early adolescents (ages 10-14 years) on sleep duration, efficiency and quality. Results showed that adolescent boys reported significantly longer sleep durations, better sleep quality, shorter sleep onset latencies, and later rise times than girls. Results also showed that sixth graders slept longer than seventh and eighth graders, and that seventh graders woke up much earlier than the other two grades. Lastly, results showed that Caucasian students reported longer sleep onset latencies and lower sleep efficiencies than African American students. Trends were observed for boys having greater sleep efficiencies than girls and for Caucasian students sleeping longer than Hispanic students. Based on the differences observed in our sample, introducing sleep education in middle school is discussed.
An Emotional Business: the Role of Emotional Intelligence in Entrepreneurial Success
Successful entrepreneurial activity is important for a healthy economy and can be a major source of job creation. While the concept of entrepreneurship has been around for quite some time, researchers continue to explore the factors that underlie entrepreneurial performance. Specifically, researchers have sought to further examine why some entrepreneurial ventures are more successful than others. the concept of emotional intelligence (EI) has gained the attention of researchers and practitioners alike. Practitioners have realized that employees can no longer be perceived as biological machines that are capable of leaving their feelings, norms, and attitudes at home when they go to work. Researchers are embracing the concept of emotional intelligence because of its relationship with efficiency, productivity, sales, revenues, quality of service, customer loyalty, employee recruitment and retention, employee commitment, employee health and satisfaction, and morale. While there is considerable evidence documenting the effects of emotional intelligence on leadership performance, job performance in large firms, and educational performance, very little research has examined how emotional intelligence affects entrepreneurial performance and the variables that account for this relationship. Individuals in entrepreneurial occupations face business situations that necessitate unique skills and abilities in social interactions. Emotional intelligence has implications for entrepreneurial situations and social interactions such as negotiation, obtaining and organizing resources, identifying and exploiting opportunities, managing stress, obtaining and maintaining customers, and providing leadership. the primary purpose of this study is to investigate emotional intelligence in the context of entrepreneurship. in addition, the study will shed light on the mediating effects of individual competencies, organizational tasks, and the environmental culture and climate. the results of the study provide insights for emotional intelligence researchers, entrepreneurship researchers, individuals with entrepreneurial aspirations, academic institutions, as well as government and financial entities that provide resources to new ventures.
Identification of Three Symbiosome Targeting Domains in the MtENOD8 Protein and Cell-to-cell MtENOD8 mRNA Movement in Nodules
The model legume, Medicago truncatula, is able to enter into a symbiotic relationship with soil bacteria, known as rhizobia. This relationship involves a carbon for nitrogen exchange in which the plant provides reduced carbon from photosynthesis in exchange for reduced, or “fixed” atmospheric nitrogen, which allows the plant to thrive in nitrogen depleted soils. Rhizobia infect and enter plant root organs, known as nodules, where they reside inside the plant cell in a novel organelle, known as the symbiosome where nitrogen fixation occurs. the symbiosome is enriched in plant proteins, however, little is known about the mechanisms that direct plant proteins to the symbiosome. Using the M. truncatula ENOD8 (MtENOD8) protein as a model to explore symbiosome protein targeting, 3-cis domains were identified within MtENOD8 capable of directing green fluorescent protein (GFP) to the symbiosome, including its N-terminal signal peptide (SP). the SP delivered GFP to the vacuole in the absence of nodules suggesting that symbiosome proteins share a common targeting pathway with vacuolar proteins. a time course analysis during nodulation indicated that there is a nodule specific redirection of MtENOD8-SP from the vacuole to the symbiosome in a MtNIP/LATD dependent manner. GFP expression by the MtENOD8 promoter revealed spatial discrepancy between promoter activity and protein localization. in situ localization of MtENOD8 mRNA showed localization to infected cells, where the protein is found, suggesting mRNA cell-to-cell movement. Expression of MtENOD8 in Arabidopsis showed that the SP did not direct GFP to the vacuole indicating that vacuolar targeting of MtENOD8’s SP may be legume specific. Taken together, the research presented here indicates that the MtENOD8 symbiosome protein has evolved redundant domains for targeting, which has part of a common pathway with vacuolar proteins. Observed spatial discrepancy between the MtENOD8 promoter and protein shows additional mechanisms of gene regulation through cell-to-cell mRNA …
Mathematics Anxiety and Mathematics Self-efficacy in Relation to Medication Calculation Performance in Nurses
The purpose of this study is to identify and analyze the relationships that exist between mathematics anxiety and nurse self-efficacy for mathematics, and the medication calculation performance of acute care nurses. This research used a quantitative correlational research design and involved a sample of 84 acute care nurses, LVNs and RNs, from a suburban private hospital. the participants filled out a Mathematics Anxiety Scale, a Nurse Self-Efficacy for Mathematics Scale and also completed a 20-item medication calculation test. Significant practical and statistical relationships were discovered between the variables utilizing multiple linear regression statistics and commonality analysis. As the Nurse’s Mathematics anxiety score increased the scores on the medication test decreased and the scores on nurse self-efficacy for mathematics scale also decreased. the demographic item of “Hours a nurse worked in one week” had the greatest significance. the more hours a nurse worked the lower their score was on the medication calculation test. This study agrees with others that nurses are not good at mathematics. This study also correlated that as the number of hours worked increased so did the medication calculations errors. and many nurses have a measurable level of anxiety about mathematics and dosage calculations and this may influence calculation ability. Suggestions for further research include refinement of instruments used in study, further differentiation of barriers to successful medication calculation performance, and testing of interventions used to teach, train and evaluate accurate medication administration in nurses.
“Almost Astronauts”: Short Stories
In this collection of short stories, I abduct experiences from my own life and take them on an imaginative journey. I experiment with elements of structure and point of view, often incorporating the magical or surreal to amplify the narrator’s internal landscape. As demonstrated in the title story, “Almost Astronauts,” these stories all deal with a sudden and sometimes destructive shift in the narrator’s perspective.
Live From New York and Straight to Washington: an Explorative Study of Internet Audience Perceptions of the Portrayals and Appearances of Presidential Candidates on Saturday Night Live
This thesis examines if and how the Internet viewers of Saturday Night Live skits were influenced by the video skits. the viewers’ online comments were read, categorized and analyzed for content to explore and discuss how the viewers “read” the text of the online video skits. Each video in which candidates John McCain, Sarah Palin, Hillary Clinton and Barack Obama appeared is summarized and analyzed through viewers’ comments. a sample of skits including actors’ portrayals of McCain, Palin, Clinton, Obama and Joe Biden is also summarized and analyzed to find and discuss how the viewers’ perceptions were influenced by the portrayals.
Understanding the Motivation of Vietnamese International Students and Their Higher Education Experiences in the United States
This research describes what motivates Vietnamese students to come to the U.S. to study for a degree, what outcomes they expect, and what they experience academically and culturally while studying in the U.S. Currently the surge of international students from Vietnam has reached an all time high of 13,112 students to the U.S. This moves the relatively small South East Asian nation to the ranking of ninth among all nations for the number of international students sent to the U.S. in depth interviews were conducted fall semester 2011 with 11 students enrolled in two large public universities in the Dallas-Fort Worth-Denton Metro area. the participants were students from Vietnam holding J-1 or F-1 visas who were in their sophomore year or beyond. Interviews were conducted with these undergraduate and graduate students on the campus where each was enrolled. Interview transcripts were provided to participants for their review and comments. Ethnograph qualitative research software was used to analyze and code the data. These students reported that the increased number of students coming to study in the U.S. is because of the reputation of higher education in the U.S., relatives living in the U.S. who create a support system, and economic growth in Vietnam which has made education abroad more accessible. More students are coming to the U.S. for study because of the respect that these students families and friends have for the educational system and potential of opportunity that a U.S. degree brings. Meaningful relationships with other students provide a better and broader educational experience for Vietnamese international students. Vietnamese international students desire not only gainful employment from their degree but also a balanced growth experience that includes friendships, immersion in the culture, and being responsible members of the host society. These students made strategic use of the community college to …
Incorporating Electrochemistry and X-ray Diffraction Experiments Into an Undergraduate Instrumental Analysis Course
Experiments were designed for an undergraduate instrumental analysis laboratory course, two in X-ray diffraction and two in electrochemistry. Those techniques were chosen due their underrepresentation in the Journal of Chemical Education. Paint samples (experiment 1) and pennies (experiment 2) were characterized using x-ray diffraction to teach students how to identify different metals and compounds in a sample. in the third experiment, copper from a penny was used to perform stripping analyses at different deposition times. As the deposition time increases, the current of the stripping peak also increases. the area under the stripping peak gives the number of coulombs passed, which allows students to calculate the mass of copper deposited on the electrode surface. the fourth experiment was on the effects of variable scan rates on a chemical system. This type of experiment gives valuable mechanistic information about the chemical system being studied.
The Myth of Strategic Superiority: Us Nuclear Weapons and Limited Conflicts, 1945-1954
The nuclear age provided U.S. soldiers and statesmen with unprecedented challenges. the U.S. military had to incorporate a weapon into strategic calculations without knowing whether the use of the weapon would be approved. Broad considerations of policy led President Dwight Eisenhower to formulate a policy that relied on nuclear weapons while fully realizing their destructive potential. Despite the belief that possession of nuclear weapons provided strategic superiority, the U.S. realized that such weapons were of little value. This realization did not stop planners from attempting to find ways to use nuclear weapons in Korea and Indochina.
Western Media Attitudes Toward an Immigrant of Color Sex Crime Victim: Case Study: the DSK Case
About 30 million women in the U.S. are estimated to be victims of sex crimes in their lifetimes. However, sex crimes, especially those committed against immigrants are the least reported crime in the country. Some sex crime victims say the fear of media criticism discourages them from reporting the crime. in May 2011, an African maid working at a New York hotel accused Dominique Strauss-Kahn, the former director of the International Monetary Fund, of sexually assaulting her. This qualitative content analysis examined the coverage of the DSK case, by three leading international newspapers: the New York Times, the Guardian and Le Monde. Findings suggest that Strauss-Kahn received more favorable coverage than Diallo. Frames identified in the coverage include the importance of status/prominence, race, culture differences, victim-blaming, male privilege, socioeconomic differences and focus on appearance. the study recommends that news organizations avoid judgmental coverage of sex crimes and consider identifying victims by allowing them to tell their side of the story.
Effects of Dissipation on Propagation of Surface Electromagnetic and Acoustic Waves
With the recent emergence of the field of metamaterials, the study of subwavelength propagation of plane waves and the dissipation of their energy either in the form of Joule losses in the case of electomagnetic waves or in the form of viscous dissipation in the case of acoustic waves in different interfaced media assumes great importance. with this motivation, I have worked on problems in two different areas, viz., plasmonics and surface acoustics. the first part (chapters 2 & 3) of the dissertation deals with the emerging field of plasmonics. Researchers have come up with various designs in an efort to fabricate efficient plasmonic waveguides capable of guiding plasmonic signals. However, the inherent dissipation in the form of Joule losses limits efficient usage of surface plasmon signal. a dielectric-metal-¬dielectric planar structure is one of the most practical plasmonic structures that can serve as an efficient waveguide to guide electromagnetic waves along the metal-dielectric boundary. I present here a theoretical study of propagation of surface plasmons along a symmetric dielectric-metal-dielectric structure and show how proper orientation of the optical axis of the anisotropic substrate enhances the propagation length. an equation for propagation length is derived in a wide range of frequencies. I also show how the frequency of coupled surface plasmons can be modulated by changing the thickness of the metal film. I propose a Kronig-Penny model for the plasmonic crystal, which in the long wavelength limit, may serve as a homogeneous dielectric substrate with high anisotropy which do not exist for natural optical crystals. in the second part (chapters 4 & 5) of the dissertation, I discuss an interesting effect of extraordinary absorption of acoustic energy due to resonant excitation of Rayleigh waves in a narrow water channel clad between two metal plates. Starting from the elastic properties of the …
9-Lipoxygenase Oxylipin Pathway in Plant Response to Biotic Stress
The activity of plant 9-lipoxygenases (LOXs) influences the outcome of Arabidopsis thaliana interaction with pathogen and insects. Evidence provided here indicates that in Arabidopsis, 9-LOXs facilitate infestation by Myzus persicae, commonly known as the green peach aphid (GPA), a sap-sucking insect, and infection by the fungal pathogen Fusarium graminearum. in comparison to the wild-type plant, lox5 mutants, which are deficient in a 9-lipoxygenase, GPA population was smaller and the insect spent less time feeding from sieve elements and xylem, thus resulting in reduced water content and fecundity of GPA. LOX5 expression is induced rapidly in roots of GPA-infested plants. This increase in LOX5 expression is paralleled by an increase in LOX5-synthesized oxylipins in the root and petiole exudates of GPA-infested plants. Micrografting experiments demonstrated that GPA population size was smaller on plants in which the roots were of the lox5 mutant genotype. Exogenous treatment of lox5 mutant roots with 9-hydroxyoctadecanoic acid restored water content and population size of GPA on lox5 mutants. Together, these results suggest that LOX5 genotype in roots is critical for facilitating insect infestation of Arabidopsis. in Arabidopsis, 9-LOX function is also required for facilitating infection by F. graminearum, which is a leading cause of Fusarium head blight (FHB) disease in wheat and other small grain crops. Loss of LOX1 and LOX5 function resulted in enhanced resistance to F. graminearum infection. Similarly in wheat, RNA interference mediated silencing of the 9-LOX homolog TaLpx1, resulted in enhanced resistance to F. graminearum. Experiments in Arabidopsis indicate that 9-LOXs promote susceptibility to this fungus by suppressing the activation of salicylic acid-mediated defense responses that are important for basal resistance to this fungus. the lox1 and lox5 mutants were also compromised for systemic acquired resistance (SAR), an inducible defense mechanism that is systemically activated throughout a plant in response to a …
General Paul Von Lettow-vorbeck’s East Africa Campaign: Maneuver Warfare on the Serengeti
General Paul von Lettow-Vorbeck’s East African Campaign was a conventional war of movement. Lettow based his operations on the military principles deduced from his thorough German military education and oversea deployments to China and German South West Africa. Upon assignment to German East Africa, he sought to convert the colony’s protectorate force from a counterinsurgency force to a conventional military force. His conventional strategy succeeded early in the war, especially at the Battle of Tanga in October 1914. However, his strategy failed as the war in East Africa intensified. He suffered a calamitous defeat at the Battle of Mahiwa in November 1917, and the heavy losses forced Lettow to adopt the counterinsurgency tactics of the colonial protectorate force.
Branded Content: Understanding the Mechanisms of Strategic Messaging in Entertainment Television Formats
Branded content as an advertising tactic is a growing phenomenon that is not widely researched and is generally ambiguous in nature. This study uses qualitative methods to explain how branded content is defined, how it functions, and how it can influence a brand. Case studies of IKEA and Chevrolet were compared alongside four interviews with branded content professionals. the data collected suggests that branded content in structure and substance is varied, however it comprises engagement, the brand, and financial transaction. the data collected also suggested that brands take a variety of stances when controlling content to support their brand, and that branded content generally supports the intangible aspects of a brand, as opposed to product features.
Road Debris
This dissertation comprises two parts: Part I, which discusses the growing trend in project books in contemporary poetry, and Part II, a collection of poems titled, Road Debris. There is an increasing trend in the number of project books, which are collections of poetry unified in both thematic and formal ways. the individual poems in a project book share overt connections which allow the book to work on many different levels, blending elements of fiction and non-fiction or sharing a specific theme or speaker. While these books have the advantage of being easily memorable, which might gain poets an edge in book contests, there are also many risks involved. the main issue surrounding project books is if the individual poems can justify the book, or do they seem too repetitive or forced. As more poets, especially newer ones, try to use the project book as a shortcut to publication, it can result in poorly written poems forced to fit into a particular concept. By examining three successful cotemporary project books—The Quick of It, by Eamon Grennan; Incident Light, by H. L. Hix; and Romey’s Order by Astory Riley—this essay discusses how these books work in order to understand the potential of the project book. All of these books work in distinctly different ways, yet they all fall into the category of project book. While project books will inevitably result in poor imitations, it allows books of poetry to expand and explore in different directions.
Analysis of Sources Affecting Ambient Particulate Matter in Brownsville, Texas
Texas is the second largest state in U.S.A. based on geographical area, population and the economy. It is home to several large coastal urban areas with major industries and infrastructure supporting the fossil-fuel based energy sector. Most of the major cities on the state have been impacted by significant air pollution events over the past decade. Studies conducted in the southern coastal region of TX have identified long range transport as a major contributor of particulate matter (PM) pollution along with local emissions. Biomass burns, secondary sulfates and diesel emissions sources are comprise as the dominant mass of PM2.5 have been noted to be formed by the long range transport biomass from Central America. Thus, the primary objective of this study was to identify and quantify local as well as regional sources contributing to the PM pollution in the coastal area of Brownsville located along the Gulf of Mexico. Source apportionment techniques such as principal component analysis (PCA) and positive matrix factorization (PMF) were employed on the air quality monitoring data to identify and quantify local and regional sources affecting this coastal region. As a supplement to the PMF and PCA, conditional probability function (CPF) analysis and potential source contribution function (PSCF) analysis were employed to characterize the meteorological influences for PM events. PCA identified an optimal solution of 6 sources affecting the coastal area of Brownsville, while PMF resolved 8 sources for the same area. Biomass comingled with sea salt was identified to be the dominant contributor from the PCA analysis with 30.2% of the apportioned PM mass in Brownsville, meanwhile PMF account secondary sulfates I & II with 27.6%. the other common sources identified included, biomass burning, crustal dust, secondary sulfate, oil combustion, mobile sources and miscellaneous traffic sources.
Fractures for Clarinet and Computer
Fractures for Clarinet and Computer is a piece for live interactive performance using custom software designed in Max/MSP. the work explores musical borrowing and transformation of music from works such as Tchaikovsky’s Fifth Symphony, Gershwin’s Rhapsody in Blue, and several fragments from synthesizer recordings of the late 1960’s and early 1970’s. the dissertation focuses on both the musical aesthetics that informed the creation of the work and the software programming that enables live sampling and harmonization systems as well as flexible control of global parameters.
Effect of Age on Likelihood to Test for Hiv
HIV/AIDS can affect individuals of any age. Efforts to educate those considered to be most at-risk, based on the age at which the most individuals are infected, are ongoing and public. Less work and mainstream education outreach, however, is being directed at an older population, who can be more likely to contract HIV, is more susceptible to the effects of HIV, and more likely to develop AIDS, than younger persons. Guided by the Health Belief Model theory, research was conducted to determine what, if any, relationship existed between age of an individual and the possibility that an HIV test will be sought. Factors of gender, education, ethnicity and marital status were included in analyses. the research indicated that as age increased, likelihood for getting an HIV test decreased. Overall, most individuals had not been tested for HIV. the implications of an aged and aging population with HIV include a need for coordinated service delivery, increased education and outreach.
Online Course Design Elements to Better Meet the Academic Needs of Students with Dyslexia in Higher Education
This study sought to determine if an online course designed and delivered in Second Life can meet the needs of higher education students with dyslexia. the course design incorporated strategies from Gagne’ and Briggs’ principles of instruction, Gagnon and Collay’s constructivist learning design, Powell’s key learning needs of dyslexics, and elements of universal design. Specific design elements are discussed including screen captures from the design. the study employed a mixed methods approach incorporating an online survey, recorded observation session, and two follow up interviews. the observation session and interviews were only completed by the sample population of eight participants, which included three participants with dyslexia and five participants without dyslexia. the sample population was selected using purposeful sampling techniques to ensure the widest representation of the population with a small sample. Extensive excerpts of the sample participants’ interview responses are presented and discussed, including participants’ suggestions for improving the course design. Key findings from all three data sources are discussed. Finally, implications for instructional design and special education and suggestions for further research are presented.
The Geography of Maternal Mortality in Nigeria
Maternal mortality is the leading cause of death among women in Nigeria, especially women aged between 15 and 19 years. This research examines the geography of maternal mortality in Nigeria and the role of cultural and religious practices, socio-economic inequalities, urbanization, access to pre and postnatal care in explaining the spatial pattern. State-level data on maternal mortality rates and predictor variables are presented. Access to healthcare, place of residence and religion explains over 74 percent of the spatial pattern of maternal mortality in Nigeria, especially in the predominantly Muslim region of northern Nigeria where poverty, early marriage and childbirth are at its highest, making them a more vulnerable population. Targeting vulnerable populations in policy-making procedures may be an important strategy for reducing maternal mortality, which would also be more successful if other socio-economic issues such as poverty, religious and health care issues are promptly addressed as well.
Relationships of Approaches to Studying, Metacognition, and Intellectual Development of General Chemistry Students
This study investigated approaches to studying, intellectual developments, and metacognitive skills of general chemistry students enrolled for the spring 2011 semester at a single campus of a multi-campus community college. the three instruments used were the Approaches and Study Skills Inventory for Students (ASSIST), the Learning Environment Preferences (LEP), and the Executive Process Questionnaire (EPQ). the subjects were 138 students enrolled in either general chemistry 1 or 2. the results revealed that the preferred approach to study was the strategic approach. the intellectual development of the students was predominantly Perry’s position 2 (dualist) in transition to position 3 (multiplicity). Correlation statistics revealed that deep approach to studying is related to effective employment of metacognitive skills. Students with a deep approach to studying were likely to utilize effective metacognitive skills. Students with a surface approach to studying used no metacognitive skills or ineffective metacognitive skills. Multiple logistic regression analysis was conducted to ascertain which of the three variables, namely approaches to studying, ability to metacognate, or level of intellectual development, was the most salient in predicting the success of general chemistry students. No single variable was found to predict students’ success in general chemistry classes; however, a surface approach to studying predisposes general chemistry students to fail. the implication of this study is that students’ study approaches, intellectual developments, and metacognitive skills are requisite information to enable instructional remediation early in the semester.
Understanding the Owner’s Manual: the United States Constitution Examined Through the Lens of Technical Communication
This dissertation explores the collaborative process and use of language that went into the creating the United States Constitution in 1787. From a technical communication perspective, the collaborative process explored did not develop any new theories on collaboration, but instead, allows scholars to track the emergence of a well-documented America collaborative process from the early period of the developing American nation on a document that has remained in use for over 235 years. in addition to examining this collaborative process, the author also discusses the use of passive voice and negative language in the first article of the Constitution.
The Argei: Sex, War, and Crucifixion in Rome and the Ancient Near East
The purpose of the Roman Argei ceremony, during which the Vestal Virgins harvested made and paraded rush puppets only to throw them into the Tiber, is widely debated. Modern historians supply three main reasons for the purpose of the Argei: an agrarian act, a scapegoat, and finally as an offering averting deceased spirits or Lares. I suggest that the ceremony also related to war and the spectacle of displaying war casualties. I compare the ancient Near East and Rome and connect the element of war and husbandry and claim that the Argei paralleled the sacred marriage. in addition to an agricultural and purification rite, these rituals may have served as sympathetic magic for pre- and inter-war periods. As of yet, no author has proposed the Argei as a ceremony related to war. By looking at the Argei holistically I open the door for a new direction of inquiry on the Argei ceremony, fertility cults in the Near East and in Rome, and on the execution of war criminals.The Argei and new year’s sacred marriage both occurred during the initiation of campaign and spring planting and harvest season. Both in the ancient Near East and in Rome, animal victims were sacrificed and displayed through impaling, crucifixion, and hanging for fertility and in war. for both Rome and the Near East war casualties were displayed on sacred trees. Through the Near East cultures a strong correlation existed between impaling, hanging, and crucifixion in war and Sacred Tree fertility worship. By examining Roman tree worship, military rituals, and agricultural ceremonies a similar correlation becomes apparent. on the same day of the Argei, Mars was married to the anthropomorphized new year and within the month became a scapegoat expelled from the city. Additionally, on the first day of the Argei boys became soldiers.
Perception of Foreign Accented Speech: the Roles of Familiarity and Linguistic Training
This paper seeks to address the issue by examining two factors that potentially affect a listener’s perception of foreign accented speech: degree of familiarity (as acquired through a work or personal environment) and amount of ESL or linguistic training. Speech samples were recorded from 18 international students from Hispanic, Asian, and Middle-eastern backgrounds and across all proficiency levels as designated by their academic English program. Six native English speakers were also recorded to serve as a basis for comparison. Listeners were drawn from two pools: people with ESL and/or linguistic training (n=42) and laypersons with no such specialist training (n=36). After completing a background questionnaire to assess familiarity with foreign accented speech, each listener rated all 24 speech samples on the dimensions of comprehensibility, degree of accent, and communicative ability. Results indicate that participants with ESL/linguistic training rate foreign accented speech more positively on all three dimensions than laypersons with no such training. Additionally, degree of familiarity with foreign accented speech is positively correlated with how participants rated the accented speech samples. a number of highly significant interactions between these and other factors including sex of the speaker, proficiency level of the speaker, and L1 family of the speaker were found as well.
Impact of Congruence Between Self-disclosed Personal Information and Review on Source Credibility in Online Travel Reviews
This experimental study examined the source-message congruence effect on source credibility by manipulating the congruence of the reviewer’s profile information (travel interest, geographical location) with no changes in the review content. the congruence effect was found to influence perceptions of the reviewer’s expertise in a travel interest. This finding suggests that revealing the reviewer’s travel interest can assist the credibility assessment of travel reviewers-particularly in terms of expertise-within the category of a travel interest. the refined classification of travel reviewers based on their travel interests can improve their usefulness as information sources for prospective travelers’ information searches. These attributes can further be employed as search cues if embedded in the reviewer’s profile.
Looting and Restitution During World War II: a Comparison Between the Soviet Union Trophy Commission and the Western Allies Monuments, Fine Arts, and Archives Commission
From the earliest civilizations, victorious armies would loot defeated cities or nations. the practice evolved into art theft as a symbol of power. Cultural superiority confirmed a country or empire’s regime. Throughout history, the Greeks and Romans cultivated, Napoleon Bonaparte refined, and Adolf Hitler perfected the practice of plunder. As the tides of Second World War began to shift in favor of the Allied Powers, special commissions, established to locate the Germans’ hoards of treasure, discovered Nazi art repositories filled with art objects looted from throughout Europe. the Soviet Union Trophy Commission and the Western Allies Monuments, Fine Arts, and Archives Commission competed to discover Nazi war loot. the two organizations not only approached the subject of plunder as a treasure hunt, but the ideology motivating both commissions made uncovering the depositories first, a priority. the Soviet trophy brigades’ mission was to dismantle all items of financial worth and ship them eastward to help rebuild a devastated Soviet economy. the Soviet Union wished for the re-compensation of cultural valuables destroyed by the Nazis’ purification practices regarding “inferior” Slavic art and architecture; however, the defeated German nation did not have the ability to reimburse the Soviet State. the trophy brigades implemented a process of restitution in kind to make physical reparations through the confiscation of Nazi war loot. the Western Allies disagreed with the Soviet Union’s policy. the Monuments, Fine Arts, and Archives Commission endeavored to return artwork looted by the Germans to the rightful owners or surviving descendants. Historically, the Western perspective of the Soviet Union’s actions was that the trophy brigades looted the conquered German Reich; however, during the period of Glasnost and after the fall of the Soviet Union, personal memoirs and interviews of Soviet trophy brigade members and museum officials have become available, and the Soviet viewpoint …
Khrushchev and Socialist Realism: a Study of the Political Control of Soviet Literature, 1960-1963
The purpose of this thesis is to examine the topic of political control of literature within the Soviet Union. The specific scope of this examination includes an investigation of Nikita S. Khrushchev and his utilization of socialist realism as one of the primary methods of literary control during the period, 1960-1963. A study of literature and its political control will demonstrate the important and dynamic roles which the political control of literature fulfills in the political system.
A Critical Evaluation of Selected Public Relations Functions of the Dallas Police Department Public Information Office
The problem of this study was to determine how well the public information office of the Dallas Police Department performed in three public relations areas: staff consultation, employee communication, and press relations. Interviews were conducted with the command staff of the Dallas Police Department and with nine mass media representatives who had regular contact with both the police department and the public information office. Their answers were compared with public relations principles taken from literature in both the general public relations and the police public relations fields to see if the public information office was succeeding or failing in performing its staff-consultation, employee-communication, and press-relations functions.
An Analysis of Marital, Sex and Occupational Status of Dramatic Characters on Commercial Television
The purpose of this pilot study was to examine the characters portrayed on "prime-time" television drama in an attempt to determine how they compared, with the distribution represented in U. S. Census Bureau data for sex, marital status and occupational status. In pursuing this objective, it was also concerned with the development of a method of content analysis that would not require use of a videotape recorder.
The Utilization of Leisure Time among Women in Psychotherapeutic Treatment
The present study was designed to investigate the utilization of leisure time among women in psychotherapeutic treatment. Three quantitative aspects and one qualitative aspect of the utilization of leisure time were chosen for investigation. Those aspects were the number of activities in which the women participated during the past twelve months, the categories of leisure interest of the chosen activities (arts and crafts; dance; drama; games, sports, and athletics; hobbies; music; outdoor recreation; reading, writing, and speaking; social recreation; special events; and voluntary services), the total time spent in leisure activities, and the level of enjoyment per hour of participation in leisure activities.
Modification of Disruptive Talking, Employing the Opportunity to Work as a Reinforcing Stimulus
The purpose of this study was to test the effectiveness of "work" as a reinforcing stimulus in a behavior modification program designed to eliminate disruptive talking. A response-cost procedure was established whereby the reinforcement was made contingent upon the behavior of eight students with learning disabilities.
The Dance of Death and The Canterbury Tales: a Comparative Study
This paper is a discussion of parallels between John Lydgate's Dance of Death and Chaucer's Canterbury Tales.
Journalism Education: a Survey of CIty Editors' Attitudes
This study determined attitudes held by metropolitan city editors in Texas toward current journalism instruction in colleges and universities. An open-ended questionnaire was mailed to city editors of newspapers in Texas with circulation over 50,000.
Court-Curbing in the Ninetieth Congress
This study seeks to analyze quantitatively the Court-curbing tendencies of the Ninetieth Congress.
The Monomythic Pattern in Three Novels by D. H. Lawrence
Sons and Lovers, The Rainbow, and Women in Love present sequentially in fictional version Lawrence's own personal journey into self-discovery in the form of a creation myth of sensual love which repeats the archetypal patterns of some of the great mythologies. It is the purpose of the following pages to show how these three novels reveal the major archetypal patterns of mythology as suggested by Joseph Campbell in his study, The Hero with A Thousand Faces.
Personality Factors and Psycho-social Conditions Related to Troublemaking Behavior in Normal Institutionalized Children
The problem of the present study was to discover the relationship of personality factors and certain psycho-social conditions related to the troublemaking behavior of normal institutionalized children.
Post-decision Selectivity in Exposure to Information
The purpose of the present study was to determine if persons who had made a recent decision would be selective in seeking information related to their decisions. Also under consideration were the explanation for any selectivity exhibited, and the explanation for any variance in the degree of selectivity manifested.
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