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Advanced Power Amplifiers Design for Modern Wireless Communication
Modern wireless communication systems use spectrally efficient modulation schemes to reach high data rate transmission. These schemes are generally involved with signals with high peak-to-average power ratio (PAPR). Moreover, the development of next generation wireless communication systems requires the power amplifiers to operate over a wide frequency band or multiple frequency bands to support different applications. These wide-band and multi-band solutions will lead to reductions in both the size and cost of the whole system. This dissertation presents several advanced power amplifier solutions to provide wide-band and multi-band operations with efficiency improvement at power back-offs.
Advanced Stochastic Signal Processing and Computational Methods: Theories and Applications
Compressed sensing has been proposed as a computationally efficient method to estimate the finite-dimensional signals. The idea is to develop an undersampling operator that can sample the large but finite-dimensional sparse signals with a rate much below the required Nyquist rate. In other words, considering the sparsity level of the signal, the compressed sensing samples the signal with a rate proportional to the amount of information hidden in the signal. In this dissertation, first, we employ compressed sensing for physical layer signal processing of directional millimeter-wave communication. Second, we go through the theoretical aspect of compressed sensing by running a comprehensive theoretical analysis of compressed sensing to address two main unsolved problems, (1) continuous-extension compressed sensing in locally convex space and (2) computing the optimum subspace and its dimension using the idea of equivalent topologies using Köthe sequence. In the first part of this thesis, we employ compressed sensing to address various problems in directional millimeter-wave communication. In particular, we are focusing on stochastic characteristics of the underlying channel to characterize, detect, estimate, and track angular parameters of doubly directional millimeter-wave communication. For this purpose, we employ compressed sensing in combination with other stochastic methods such as Correlation Matrix Distance (CMD), spectral overlap, autoregressive process, and Fuzzy entropy to (1) study the (non) stationary behavior of the channel and (2) estimate and track channel parameters. This class of applications is finite-dimensional signals. Compressed sensing demonstrates great capability in sampling finite-dimensional signals. Nevertheless, it does not show the same performance sampling the semi-infinite and infinite-dimensional signals. The second part of the thesis is more theoretical works on compressed sensing toward application. In chapter 4, we leverage the group Fourier theory and the stochastical nature of the directional communication to introduce families of the linear and quadratic family of displacement operators that …
Advanced Techniques in Microbial and Molecular Biology: Laboratory Procedures for a Graduate Level Course
Advanced laboratory techniques for Microbial and Molecular Biology at the graduate level are presented in this thesis. The procedures for the laboratory experiments are set forth in detail. This laboratory is conducted as two parts, each by a different professor. Part 1 covers the experiments conducted by Dr G.A.O. Donovan. These experiments include an introduction, staining procedures, biochemical reactions, mutagenesis experiment, essays,. preparation and analysis of plasmid DNA and various other topics. Part 2 covers the experiments conducted by Dr. Daniel Kunz and includes various topics like media preparation, phenotyping strains, conjugative transfer of plasmids, SDS-PAGE, induction and measurement of enzyme and transposon mutagenesis
Advanced Technology for Source Drain Resistance Reduction in Nanoscale FinFETs
Dual gate MOSFET structures such as FinFETs are widely regarded as the most promising option for continued scaling of silicon based transistors after 2010. This work examines key process modules that enable reduction of both device area and fin width beyond requirements for the 16nm node. Because aggressively scaled FinFET structures suffer significantly degraded device performance due to large source/drain series resistance (RS/D), several methods to mitigate RS/D such as maximizing contact area, silicide engineering, and epitaxially raised S/D have been evaluated.
The Advancement of the Negro within Business and Professional Enterprise in Texas Since 1900
"This research study shall be the advancement of the Negro within business and professional enterprises in Texas since 1900. The objective is to discover if and where the colored people have made progress. If progress has been made, it must be due to some prevailing influence, and if no progress has been made, there has evidently been some hindering cause. This research shall try to discover these factors and record the results as they affected the progress of these people. It is the intention of this writer to race the educational, economic, and social advancement of these people and to show in what fields of endeavor they have advanced and in which fields they have failed. This advancement shall be traced from the year 1900 to the year 1950, showing the progress in ten year intervals."-- leaf 1.
Advancements in Instrumentation for Fourier Transform Microwave Spectroscopy
The efforts of my research have led to the successful construction of several instruments that have helped expand the field of microwave spectroscopy. The classic Balle-Flygare spectrometer has been modified to include two different sets of antenna to operate in the frequency ranges 6-18 GHz and 18-26 GHz, allowing it to function for a large range without having to break vacuum. This modified FTMW instrument houses two low noise amplifiers in the vacuum chamber to allow for the LNAs to be as close to the antenna as physically possible, improving sensitivity. A new innovative Balle-Flygare type spectrometer, the efficient low frequency FTMW, was conceived and built to operate at frequencies as low as 500 MHz through the use of highly curved mirrors. This is new for FTMW techniques that normally operate at 4 GHz or higher with only a few exceptions around 2 GHz. The chirped pulse FTMW spectrometer uses horn antennas to observe spectra that span 2 GHz versus the standard 1 MHz of a cavity technique. This instrument decreases the amount of time to obtain a large spectral region of relative correct intensity molecular transitions. A Nd:YAG laser ablation apparatus was attached to the classic Balle-Flygare and chirped pulse FTMW spectrometers. This allowed the study of heavy metal containing compounds. The instruments I constructed and the techniques I used have allowed the discovery of further insights into molecular chemistry. I have seen the effects of fluorinating an alkyl halide by determining the geometry of the carbon backbone of trans-1-iodoperfluoropropane and observing a ΔJ = 3 forbidden transition caused by a strong quadrupole coupling constant on this heavy molecule. The quadrupole coupling tensors of butyronitrile, a molecule observed in space, have been improved. The nuclear quadrupole coupling tensor of difluoroiodomethane was added to a list of variably fluorinated methyl …
Advances in academic video game collections
This article discusses how the UNT Media Library developed a video game collection to support student retention, student recreation, and classroom instruction. The article also will explain how the Library successfully met challenges involved in collection development, related technology, space needs, and the challenges it sees ahead.
Advances to Convolutional Neural Network Architectures for Prediction and Classification with Applications in the First Dimensional Space
In the vast field of signal processing, machine learning is rapidly expanding its domain into all realms. As a constituent of this expansion, this thesis presents contributive work on advancements in machine learning algorithms by building on the shoulder of giants. The first chapter of this thesis contains enhancements to a CNN (convolutional neural network) for better classification of heartbeat arrhythmia. The network goes through a two stage development, the first being augmentations to the network and the second being the implementation of dropout. Chapter 2 involves the combination of CNN and LSTM (long short term memory) networks for the task of short-term energy use data regression. Exploiting the benefits of two of the most powerful neural networks, a unique, novel neural network is created to effectually predict future energy use. The final section concludes this work with directions for future works.
Advancing a Community's Conversations About and Engagement with Climate Change
The goal of this project completed for the Greater Northfield Sustainability Collaborative (GNSC) was to understand how Northfield, Minnesota citizens are experiencing climate change. Thirty individuals were interviewed to find out what they know about climate change, what actions they are taking, what they think the solutions are to the problems, and what barriers they have to more fully engaging with climate change issues. The interview results are intended to promote and advance the community's discussion on climate change via social learning and community engagement activities such as town hall forums and community surveys. These activities encourage citizens in the community to have direct input into the development of the community's climate action plan (CAP). Analysis of the interviews showed that the interviewees are witnessing climate change, that most are taking at least some action such as recycling or lowering thermostats, that they can name barriers to their own inaction, that they say communication about climate change remains confusing and is not widespread in Northfield, and that they are able to provide numerous suggestions for what the local and broader leadership should be doing. The analysis also showed wide individual variation within the group. Interviewees who were less knowledgeable about climate were less likely to be taking action and do not participate in social groups where climate change is discussed. Conclusions are that the whole group would like more and better communication and education from our leaders, that they also expect our leaders to be part of creating solutions to climate change, and that the solutions the interviewees suggested provide a very thorough initial list of mitigation and adaptation strategies for the city's future CAP.
Advancing Open Access Through Digital Services
Presentation for the 2010 Open Access Symposium discussing digital services using Georgia Tech University as a case study.
Advancing the National Digital Platform: The State of Digitization in US Public and State Libraries
The publication summarizes the results of a needs assessment and gap analysis of digitization activities by public libraries and state library agencies in the United States. The report outlines key findings from surveys of U.S. public libraries and state library agencies, and provides observations and recommendations for future exploration in the area of supporting digitization efforts in public libraries.
Advantages in the Social Studies to be Derived from the Texas Centennial by Children of Junior High School Level
The predominant theme utilized by the Texas Centennial is the historical background Texas, which encompasses a hundred years of independence and four centuries of progress. This study aims to select and classify those buildings in the Texas Centennial Exposition containing exhibits possessing educational significance for junior high school social studies students.
Advantages of Marginal Costing as Compared to the Hour Rate or Normal Costing Now Used as the Basis of Price Determination in the Forms Division
This thesis is designed to emphasize and illustrate that marginal costing is a tool of management that can make clear the how, when, why, and wherefor of the price determining affect and its results.
The Adventist Movement in Trinidad: A Case-Study in Intercultural Communication
The problem with which this study is concerned is that of devising methods to assist teachers of Christianity in reaching and attracting a fast-growing and enlightened country. The Adventist church, along with other churches, is being challenged in communicating its message to a populace consisting of varied ethnic groups. This investigation has a two-fold purpose: (1) to study intercultural communications in order to locate principles which are applicable to missionary endeavors, and (2) to place these principles at the disposal of missionary personnel for their selective use in disseminating the beliefs of Christianity.
Adventure and Political Reform in Winston Churchill Before 1913
This thesis discusses the life of Winston Churchill. It explores his adventures and political reform prior to 1913.
Adventure Based Counseling: Exploring the Impact of Abc on Adaptive Functioning in High School Males
The purpose of this study was to examine the impact of ABC on adaptive functioning in high school males. Specifically, a pretest/posttest, experimental design (N = 46; Caucasian = 26, Hispanic = 20) was used to examine the changes in adaptive and maladaptive functioning in ABC participants (n = 21) compared to those in a control/waitlist group (n = 25) as measured by the Behavior Assessment System for Children, second edition (BASC-2). Participants randomly assigned to the treatment group engaged in 10 ABC sessions. In order to better understand group process in ABC, I had experimental group participants complete the Group Climate Question Short form (GCQ-S) three times during the intervention. A mixed between/within subjects ANOVA of the BASC-2 scores revealed a statistically significant increase in adaptive functioning for both groups, F(1, 33) = 8.58, p < .01, with a partial eta squared of .21 indicating a large effect. There was no statistically significant difference between the experimental and control/waitlist groups, F(1, 33) = .064, p = .80, and a very small effect size (partial eta squared < .01). A repeated measures ANOVA of the GCQ-S scores revealed a statistically significant increase in engagement, F(2, 38) = 4.067, p = .025, with an eta squared of .21, indicating a large effect. Limitations of the study, implications of the results for practice, and recommendations for future research are presented.
Adventure in the Classroom: Role and Practices of Adventure Therapy in School Counseling Curriculum
The purpose of this study was to explore the role and impact of adventure therapy (AT) on student development and to identify the greatest challenges to the implementation of AT in schools. The Delphi method was used to generate consensus of opinion within a group of experts in the field of adventure therapy and school counseling. Purposive sampling was used to identify the members of the expert panel and the definition of consensus was set at 80% for each item. Content and descriptive analysis were used to develop representative statements from participant responses between rounds. Ten Caucasian respondents, 6 men and 4 women, having met at least one of the expert criteria for the study, completed three rounds of participation which resulted in the attainment of consensus on 36 items addressing the role of adventure therapy in school counseling and the impact of AT in the areas of academic/career and social/emotional development. Twelve challenges to the implementation of AT in schools were identified and put in rank order. According to the results, experts believe adventure therapy has the greatest impact on social connectedness, problem solving, and student engagement in schools. Access to appropriate training in AT, administrative support, and funding were identified as the three greatest challenges to the implementation of adventure therapy in schools.
Adventures in determining a digitization lab's capacity
UNT's Digital Projects Unit explores ways to determining their output capacity. Ultimately choosing to adapt the Points Process System developed by the University of Northwestern.
Adventures in Digital Preservation (and how not to lose your way)
Presentation for the 2013 Conservation Savvy: From Expert to DIY Conference. This presentation discusses adventures in digital preservation and how not to lose your way.
Advertising and Promotional Procedure as Practiced by Five Dallas Department Stores
The problem with which this paper is concerned is to observe and appraise the retail advertising and promotional procedure of five of the Dallas department stores. After observing their advertising methods, an attempt will be made to conclude whether their efficiency might be increased through use of different advertising and promotional policies.
Advising the ARVN: Lieutenant General Samuel T. Williams in Vietnam, 1955-1960
Beginning in 1954, the United States Army attempted to build a viable armed force in South Vietnam. Until the early 1960s, other areas commanded more American attention, yet this formative period was influential in later United States involvement in Vietnam. This thesis examines United States advisory efforts from 1955 to 1960 by analyzing the tenure of Lieutenant General Samuel T. Williams as Chief of the Military Assistance Advisory Group in South Vietnam. During Williams's tenure, the communist forces in the north began the guerrilla insurgency in earnest. Williams's failure to respond to this change has been justly criticized; yet his actions were reflective of the United States Army's attitude toward insurgencies in the late 1950s.
Advocates for Disability Rights: Building the Texas Disability History Collection
Presentation for the 2017 Digital Frontiers Conference. This presentation provides an overview of the University of Texas at Arlington Libraries' Texas Disability History Collection.
Advocating to Grow Collections Mentoring to Grow Leaders
Presentation for the 2015 Louisiana Library Association (LLA) Government Documents Round Table Section (GODART) Breakfast Meeting. This presentation discusses advocating to grow collections and mentoring to grow leaders.
Aerobic Capacity as Assessed by Arm Crank Ergometry in Females Wheelchair Athletes Versus Able-Bodied Athletes
No Description Available.
Aerobic Conditioning: Effects on Locus of Control, Mood States, and General Well-Being
This study was conducted to examine the sequelae of cardiovascular conditioning on locus of control, short-term mood, and psychological well-being. A pre-post test design, with control group, was used to measure the effects of a one month program of aerobic conditioning on adult volunteers. This study also sought to examine ways in which fitness changes covaried with psychological changes, and to describe patterns of change taking place during aerobic conditioning.
Aerodynamic Optimization of a 2D Airfoil for Rotary-Wing Aircraft at Mars Atmospheric Conditions
The interest toward Mars exploration has been considerably increasing due to also the successful deployment of the Perseverance rover and the continuous tests developed by SpaceX's launch vehicle, Starship. While the Mars 2020 mission is currently in progress, the first controlled flight on another planet have been proven in April 2021 with the vertical take-off and landing of the Ingenuity rotorcraft on Mars. In addition, the rotorcraft Dragonfly is expected to achieve the same endeavor in Titan, the largest moon of Saturn, by 2036. Continuous efforts have been oriented toward the development of new technologies and aircraft configurations to improve the performance of current proposed designs to achieve powered flight in different planetary bodies. This thesis work is a preliminary study to develop a comprehensive analysis over the generation of optimum airfoil geometries to achieve vertical flight in environments where low Reynolds numbers and Mach number equal to 0.2 and 0.5.
Aerospace and Defense Industries Online Recruiting of College and University Graduates: Strategies Toward Defining a Comprehensive Informational Benchmark
This qualitative, inductive study analyzed online recruiting information posted at the websites of five major aerospace and defense corporations to recruit college juniors, seniors, and recent graduates. Recruitment of this group is critical to staff the personnel for the scientific, technical, and management needs of aerospace and defense industries. The study sought: (1) to determine the use of multiple recruitment factors inferred from the literature and recommended for successful recruitment of college graduates, (2) to determine use of online social media (Facebook, Twitter, LinkedIn) to recruit this population, and (3) to explore commonalities among these corporations regarding online recruiting information to determine if a model for online recruitment now exists. A matrix of recruitment factors was developed from a review of the literature on the personnel needs of this industry and on effective recruiting factors for this group. Content analysis involved filtering information at each website with the matrix. Conclusions of this study include: (1) the matrix of recruitment factors and the rating scale developed for the purposes of this study provide a tool for researching, documenting, and comparing recruitment information on the internet; (2) that while these corporations represent the latest applications in technology in their manufacturing processes and products, they do not use social networking technology to the extent the popular and scholarly literature indicate is typical for the target group. Given that the current generation exhibits extensive use of social media, several of these corporations’ websites appear not to utilize this networking technology. Informally, these corporations argue that cyber-security prevents extensive use of social networking sites. Thus, these corporations must determine how to maintain cyber-security while at the same time adopting more accepted use of social networking platforms.
Aesthetic and Technical Analysis on Soar!
Soar! is a musical composition written for wind ensemble and computer music. The total duration of the work is approximately 10 minutes. Flocking behavior of migratory birds serves as the most prominent influence on the imagery and local structure of the composition. The cyclical nature of the birds' journey inspires palindromic designs in the temporal domain. Aesthetically, Soar! portrays the fluid shapes of the flocks with numerous grains in the sounds. This effect is achieved by giving individual parts high degree of independence, especially in regards to rhythm. Technically, Soar! explores various interactions among instrumental lines in a wind ensemble, constructs overarching symmetrical structures, and integrates a large ensemble with computer music. The conductor acts as the leader at several improvisational moments in Soar! The use of conductor-initiated musical events in the piece can be traced back through the historic lineage of aleatoric compositions since the middle of the twentieth century. [Score is on p. 54-92.]
Aesthetic Justifications for Music Education: a Theoretical Examination of Their Usefulness
Justifications for music education have been studied only by examining historical trends in statements of aesthetic versus utilitarian values, and not from the perspective of evaluating the justifications' usefulness. A number of prominent writers in the music education field, while supporting aesthetic values as important for music education, have expressed doubts about the effectiveness of aesthetic justifications when used for convincing outsiders of the importance of music in the public school curriculum. These doubts, along with a preponderance of aesthetic justifications in the recent music education literature, led to the present study, which conducted a theoretical examination of the usefulness of aesthetic justifications for music education. The study addressed three research problems, namely: (1) the attitudes of the clientele groups of the public schools in terms of their values toward music as a subject in the schools; (2) the attitudes of the groups within the music education profession in terms of their values for music in the public schools and for the profession itself; and 3) the likelihood that justifications based upon "aesthetics" as a system of values would be accepted by the groups both inside arid outside the music education profession. A philosophical-sociological perspective was chosen for the theoretical analysis because the problems of the study concern the manner in which values are accepted or rejected by groups of people. The particular sociological theory chosen combined the symbolic interaction theory of George Herbert Mead and the sociology of knowledge as described by Peter Berger and Thomas Luckmann. Conclusions: Problems arise in justifying music education using aesthetic theory because (1) the symbolic universe of aesthetic theory is complex and is not well-understood by music educators or the clientele of the public schools; and (2) aesthetic theory represents gestures of a reference group with norms and values not usually found in …
Aesthetic Models and Structural Features in Concerto for Solo Percussion and Concert Band
Concerto for Solo Percussion and Concert Band was commissioned by Staff Sergeant Rone Sparrow, a percussionist with the West Point Military Academy Band. Funding for the project was provided by the Barlow Foundation. The piece was premiered April 13, 2005 in the Eisenhower Hall Theater at West Point, New York. Rone Sparrow performed with the USMA band, and Colonel Thomas Rotondi Jr., Commander/Conductor, conducted the piece. The concerto consists of three movements, and each movement features a different instrument: the first features marimba, the second, vibraphone, and the third movement features the drum kit together with a rhythm section (piano, bass, and drums). In addition to the piece, the dissertation paper discusses important technical detail related to the piece, including: harmony, form, rhythm, programmatic ideas as they relate to motivic strands, and the process of generating and discarding material. The paper also focuses on a number of factors that were influential to the piece, such as postmodern philosophy.
Aesthetics in the Popular Culture
The purpose of this thesis is to consider three opposing statements regarding aesthetics in our popular culture. The first statement is that the youth of this age are demolishing the old standards of aesthetic taste and are creating a nonaesthetic; the second statement is that the youth are enlarging the vision and scope of the accepted standard of aesthetic and changing its direction; the thrid statement is that the creations of the youth in our popular culture of today are neither new nor nonaesthetic, but merely a continuation of aesthetics as they are accepted. One statement will be chosen as the most valid of the three.
The Aesthetics of Minimalist Music and a Schenkerian-Oriented Analysis of the First Movement "Opening" of Philip Glass' Glassworks
Philip Glass' Glassworks (1981) is a six-movement composition for two flutes, two soprano saxophones/clarinets, two tenor saxophones/bass clarinets, two French horns, violas, cellos, and the DX7 electric piano. Glassworks consists of six movements titled "Opening," "Floe," "Island," "Rubric," "Facades," and "Closing." This thesis covers the first movement "Opening." Repetition in musical minimalism confronts traditional prescriptive codes of tonal music and post-tonal music. While challenging the traditional codes, repetition in musical minimalism established new codes for listening to minimal music. This thesis explores the implications of these ideas.
The Aesthetics of Sin: Beauty and Depravity in Early Modern English Literature
This dissertation argues that early modern writers such as William Shakespeare, Thomas Middleton, George Herbert, John Milton, and Andrew Marvell played a critical role in the transition from the Neoplatonic philosophy of beauty to Enlightenment aesthetics. I demonstrate how the Protestant Reformation, with its special emphasis on the depravity of human nature, prompted writers to critique models of aesthetic judgment and experience that depended on high faith in human goodness and rationality. These writers in turn used their literary works to popularize skepticism about the human mind's ability to perceive and appreciate beauty accurately. In doing so, early modern writers helped create an intellectual culture in which aesthetics would emerge as a distinct branch of philosophy.
The Affect of Mobile Performance Support Devices on Anxiety and Self-Efficacy of Hospital Float Staff
Floating describes the act of staff moving from one unit to another based on the needs of the patients in a hospital. Many staff who float to different units express negative feelings, including anxiety and lack in self-efficacy. However, floating is both an economical and efficient method to use staff across the hospital, especially with current staffing shortages in the United States. This study investigated how the use of mobile performance support devices may help reduce anxiety and increase self-efficacy for those staff who float to different units. with access to multiple resources available on the mobile device, Bandura's social learning theory and self-efficacy concept set the framework through modeling, observing, and imitating others in order to reproduce certain behaviors and tasks and believe in one's capability to perform. a quantitative study incorporating the retrospective pretest-posttest design was conducted using the population of float staff, including both nurses and respiratory therapists, from Children's Medical Center of Dallas. Both the State-Trait Anxiety Inventory and General Self-Efficacy Scale, along with a basic demographic tool, were used to explore anxiety and self-efficacy in relation to the usage of mobile performance support devices. Findings can be used to impact the negative feelings of staff towards the idea of floating.
Affecting Children's Value Claims by Using High-Level Questioning Focused on Selected Poetry
This study was to determine the extent to which the use of high-level questioning, through eliciting responses to selected poems, affects children's value claims. Twenty-seven seventh-grade boys comprised the control group, and twenty-seven eighth-grade boys comprised the experimental group. The experimental group took part in values-clarification experiences for sixteen weeks. The control group received no value instruction. The Values Inventory was administered to both groups at the beginning and at the end of the sixteen weeks. Testing of the hypotheses resulted in eight of the hypotheses being significant at the .01 level, indicating that values-clarification experiences using high-level questioning and selected poems did affect children's value claims.
Affective and cognitive components of job satisfaction: Scale development and initial validiation.
Job satisfaction is one of the most commonly studied variables in the organizational literature. It is related to a multitude of employee-relevant variables including but not limited to performance, organizational commitment, and intent to quit. This study examined two new instruments measuring the components of affect and cognition as they relate to job satisfaction. It further proposed including an evaluative (or true attitudinal) component to improve the prediction of job satisfaction. Results provide some evidence of both two and three factor structures of affect and cognition. This study found minimal support for the inclusion of evaluation in the measurement of job satisfaction. Affect was found to be the single best predictor of job satisfaction, regardless of the satisfaction measure used. Further development is needed to define the factor structures of affect and cognition as well as the role of these factors and evaluation in the prediction of job satisfaction.
An Affective-Cognitive Group Counseling Procedure for Use with Parents of Handicapped Children: A Comparative Study of its Effectiveness for Changing Attitudes and Training Parents in a Method of Child Guidance
This study concerned the paucity of group counseling procedures designed specifically for use with parents of handicapped children. Purposes of the study were- (1) design of an affective-cognitive group counseling procedure, (2) investigation of affective-cognitive group counseling procedural effects with parents of handicapped children, (3) determination of procedural effects in a. changing the intra- and interpersonal attitudes of parents, b. increasing parents' knowledge of Positive Behavior Management, and (4) determining comparative procedure effects. Four research hypotheses related to the efficacy of the affective-cognitive group counseling procedure were formulated and tested at the .05 level of confidence. Statistical analysis of data indicated that parents participating in the affective-cognitive group counseling procedure did not achieve significantly higher posttest mean scores on the Acceptance of Self and Others test or in the five areas of the Parent Attitude Survey Scale than did parents participating in the affective, cognitive, or control group. Data did reveal that parents participating in the cognitive group did achieve significantly higher adjusted posttest mean scores on the Positive Behavior Management Assessment than did parents participating in the affective-cognitive, affective, or control group. Data also indicated that parents in the affective-cognitive group did not obtain greater mean scores on goal-attainment than did parents in the other three groups. On the basis of statistical findings, all four hypotheses were rejected.
Affective Forecasting: the Effects of Immune Neglect and Surrogation
Studies of affective forecasting examine people’s ability to predict (forecast) their emotional (affective) responses to future events. Affective forecasts underlie nearly all decisions people make and the actions they take. However, people engage in systematic cognitive errors when making affective forecasts and most often overestimate the intensity and duration of their emotional responses. Understanding the mechanisms that lead to affective forecasting errors (e.g., immune neglect) and examining the utility of methods for improving affective forecasting errors (e.g., surrogation) can provide highly valuable information for clinicians as they assist clients in determining their goals both for therapy and for life. The first purpose of the current study was to determine if affective forecasting errors due to immune neglect lead to misjudgments about the relative emotional impact of minor versus moderate negative experiences (i.e., trauma severity). The second purpose was to examine the utility of surrogation for improving affective forecasts. Potential interaction effects between these two variables were also examined. The current study utilized a 2 (Trauma Severity: minor, moderate) X 3 (Prediction Information: surrogation information only, simulation information only, both types of information) experimental design. Undergraduates were recruited via the SONA system and randomly assigned to one of the six experimental conditions. A preliminary study was conducted to obtain surrogation information for use in the main study. All participants in the main study predicted how they would feel 10 minutes after receiving negative personality feedback, using a 10-point scale ranging from (1) very unhappy to (10) very happy. These predictions constitute their affective forecasts. All participants then actually received the negative personality feedback (ostensibly from another participant, a peer, in a nearby room) and reported their actual affective states ten minutes later, using the same scale. These ratings constitute their affective reports. Affective forecasting error was calculated as the difference between …
Affective Reactions and Psychosocial Functioning in the Course of Psycho-Educational Assessment
Every day, children throughout the United States are given psychological evaluations for many different clinical and psycho-educational purposes. Very little research has attempted to investigate children's responses to the experience of having intellectual and achievement tests administered. The goal of the current research was to explore the effect a psycho-educational evaluation has on children in areas of self-concept and anxiety. Dependent variables consisted of pre- and post-test measures of anxiety and self-concept. A total of 75 children in the 4th 5th and 6th grades were recruited after referral for evaluation and possible placement in the Talented and Gifted Program or Special Education. This study employed Analysis of Variance (ANOVA), t-tests, multiple regression analysis, and correlational analysis. Findings included initial evidence that children endorsed decreased anxiety after psycho-educational assessments rather than increased anxiety, suggesting that fear of unknown situations may be more anxiety provoking than the actual situation itself, potentially beneficial findings for psychology and psychometric professionals who evaluate children daily. Students endorsement of academic self-concept significantly predicted anxiety after a psycho-educational evaluation, indicating that students who feel capable in academic areas may endorse less anxiety after an evaluation than students who do not feel academically capable. Finally, negative verbal interaction with parents significantly predicted lower general self-concept scores, providing evidence that the manner in which parents verbally relate to their children may have significant impact for the mental health of children.
The Affective Value of Planetarium-Related Curricula in High-, Middle-, and Low-Achieving Secondary School Students
The problem of this study was to measure the effects of differing curricular patterns involving the use of planetarium centered activities on the affective domain of high-,middle-, and low-achieving secondary school students. Two different curricular patterns were studied. At each achievement level, one group viewed two planetarium lessons in conjunction with their classroom work in astronomy. Also, at each achievement level, two groups viewed the planetarium lessons as review activities which followed their completion of classroom work in astronomy earlier in the school year. The following conclusions were made with respect to the planetarium-related curricula studied. 1. Two exposures to planetarium lessons as a review activity caused a significant decline in the attitude toward astronomy among high-achieving students. 2. Two exposures to planetarium lessons did not significantly improve students' attitudes toward astronomy at any achievement level or with either curricular pattern studied. 3. Middle- and low-achieving students' attitudes were not significantly affected by two exposures to the planetarium lessons. Varying the manner of employing the planetarium in relation to classroom work in astronomy, in the manner studied, made no significant differences in the attitudes of students at either of these achievement levels.
The Affects of Religiosity on Anomie
This study explores the relationship between religion and anomie. The theoretical framework of Durkheim and Merton was used to suggest the hypothetical relationship between the two variables: as religiosity increases, anomie decreases. A secondary analysis was conducted using the 1991 General Social Survey (GSS). The GSS is one of the largest annual surveys conducted by the National Opinion Research Center. There were 1517 adult respondents composing the 1991 cross-national sample. Questions measuring both the belief and action dimensions of religion were used to measure respondents' level of religiosity. Questions from the Srole Scale of Anomia were used to measure respondents' level of anomia. Durkheim's theory that religion functions to integrate individuals into the larger society and therefore diminish levels of anomie was not supported with this data. While the lack of significant findings did not support the theory, neither did it disprove it. The hypothetical inverse relationship between class and anomie was supported with this data. Another hypothetical relationship, that of the most religious, women experience less anomie than men, was also not supported due to the lack of a significant relationship among the primary variables. Continued use of comprehensive and large scale surveys such as the General Social Survey is crucial. This research suggests the need for further testing of these hypotheses using more elaborate measures.
Affordances of External Representations in Instructional Design: The Effect of Narrative and Imagery in Learning.
Consisting of both theoretical and empirical inquires, this study examines the primary functions of narrative and the relationship between narrative and mental imagery. The study proposes a new framework to interpret semiotic resources. Combining this with the linguistic functional theory of Halliday (1978), a functional method to empirically investigate semiotic representations was also developed. In the empirical inquiry, the study developed a latent construct method to empirically test the effects of narrative in a real learning situation. This study is the first to investigate the functional relationship between narrative and mental imagery, and among the first to suggest a theory and empirically investigate representations of a multimodal nature. The study is also among the first to use latent constructs to investigate the learning experience in a real educational setting. Data were collected from 190 library professionals who enrolled in three sections (two in narrative and one in plain text) of an online course administered through Vista 4.0 and who completed the course and responded to several instruments. Essay data (n = 82 x 2) were analyzed using content analysis based on the narrative analysis framework developed. Quantitative data analysis methods include univariate data analysis, factor analysis, and structural equation modeling that tests the proposed model and verifies the relationships between the latent variables. Overall, the findings support the hypotheses about the functional effects of narrative identified, and narrative is found to provide a favorable and positive learning context which is tested by the proposed model of learning experience measured by several latent constructs (X2 = 31.67, df = 47, p = .9577, RMSEA = .00, SRMR = .047, NNFI = 1.05, CFI = 1.00, and GFI = .94). The results indicate that participants who enrolled in the narrative sections of the course gained higher creative scores and showed better results …
Affordances of Instrumentation in General Chemistry Laboratories
The purpose of this study is to find out what students in the first chemistry course at the undergraduate level (general chemistry for science majors) know about the affordances of instrumentation used in the general chemistry laboratory and how their knowledge develops over time. Overall, students see the PASCO™ system as a useful and accurate measuring tool for general chemistry labs. They see the probeware as easy to use, portable, and able to interact with computers. Students find that the PASCO™ probeware system is useful in their general chemistry labs, more advanced chemistry labs, and in other science classes, and can be used in a variety of labs done in general chemistry. Students learn the affordances of the probeware through the lab manual, the laboratory teaching assistant, by trial and error, and from each other. The use of probeware systems provides lab instructors the opportunity to focus on the concepts illustrated by experiments and the opportunity to spend time discussing the results. In order to teach effectively, the instructor must know the correct name of the components involved, how to assemble and disassemble it correctly, how to troubleshoot the software, and must be able to replace broken or missing components quickly. The use of podcasts or Web-based videos should increase student understanding of affordances of the probeware.
Africa Adaptation Programme: An insight into AAP and Country project Profiles
The Africa Adaptation Programme (AAP) has been designed to support the long-term efforts of targeted countries to further develop their capability to successfully identify, design and implement holistic adaptation and disaster risk reduction programmes that are aligned with national development priorities. This report provides insight into the Africa Adaptation Programme (AAP) and its related country project profiles. The AAP has shifted into implementation, with Namibia and Tunisia as the first countries to complete national inception workshops. Eighteen out of the total twenty programme countries will complete national inception processes and start full-fledged implementation in the coming months.
Africa: Atlas of Our Changing Environment
This comprehensive atlas provides data, satellite imagery, and analysis of the environmental conditions and issues relevant to each African country, and several surrounding island nations. The atlas also covers trans-border international issues in Africa.
African-American Achievement in Charter Schools and the Impact of Connectedness, Alignment, Rigor, and Engagement (C.A.R.E.) on School Effectiveness: A Meta-Analysis and Systematic Review
The purpose of the study was to examine the effects of charter schools on African-American students, this study sought to determine if the practice of connectedness, alignment, rigor, and engagement (C.A.R.E.) influenced academic outcomes. The research methodology employed a meta-analysis in conjunction with a systematic review as a cross-reference and to address variables not covered in the meta-analysis. Utilizing a meta-analysis allowed for a synthesis of the existing quantitative published data to consolidate the results. This produced a specific report of achievement data for African-American students. The results revealed that regardless of region, subject, type of assessment, or school focus charter school do positively influence African-American students' academic outcomes. This study also found the practices connectedness, alignment, rigor, and engagement, the C.A.R.E. model when employed in schools improve academic outcomes, especially when combined and implemented with best practices.
African American Children in the Jim Crow North: Learning Race and Developing a Racial Identity
This thesis explores how African American children in the North learned race and racial identity during the Jim Crow era. Influences such as literature, media, parental instruction, interactions with others, and observations are examined.
African American Father Influences on the Career Development of Emerging Adults
The current study examined the paternal influences on the career development of African American emerging adults. While statistics have shown that many African Americans remain in the lower socioeconomic status bracket and have worse academic and career outcomes, still many African Americans are successful. The literature seems to attribute lack of success to low socioeconomic status, but attributes success to close family relationships. However, most of these studies have focused on maternal relationships and have neglected to include the influence of paternal relationships. Studies that have examined African American fathers have emphasized their negative attributes. Previous studies have also failed to consider the influence of other factors on the career development process such as ethnic identity and psychological adjustment. This study explored the influence of contextual, family, and developmental factors on the career process of African American emerging adults. One hundred sixty-seven African American undergraduate students ages 18 to 25 were recruited for participation in this study. Regression analyses indicated that the quality of the father-child relationship influenced career development, though not in the manner expected. High levels of father support enhanced well-being for individuals with high ethnic identity, but did not produce the same results for individuals with low ethnic identity. Well-being was a significant predictor of career maturity. Explanations, implications, and future directions are discussed.
African-American Parents' Nutritional Habits: Implications for the Prevention of Early Childhood Obesity.
This research study addressed the nutritional beliefs and habits of African-American parents of children aged 3 to 6 years old. Both quantitative and qualitative data collection methods were employed. Quantitative data was collected via the Comprehensive Feeding Practices Questionnaire as well as a demographic questionnaire. Qualitative data was collected from oral interviews conducted by the researcher. Seventy-five parents or guardians participated in the study. Findings for the research questions revealed the participants' beliefs about nutrition directly correlated with food they provided for their children and most believed nutrition rather than genetics played a role in their child(ren)'s weight. Furthermore, parents from lower income families consumed more home cooked meals per week and those with higher incomes did not consume more fast food per week. Food intake restriction and control in feeding was similar among all participants, regardless of restriction and control in feeding was similar among all participants, regardless of education or income level. Suggestions for future research were included.
African-American Senior Administrators of Colleges and Universities in American Higher Education: Identification of Characteristics in Their Career Progression
This study identified and compared characteristics in the career progression of African-American college presidents of institutions in the continental United States. The study was concerned with personal, educational and professional characteristics of these senior level administrators. From a population of 141 individuals, 73 presidents participated in this study. Frequencies, means, percentages, chi-square, crosstabulations and analysis of variance (ANOVA) were employed in the analysis of data. The level of significance was set at 0.05.
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