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Educator Perceptions of Forces Influencing Implementation of a Statewide Writing Portfolio Assessment
Leaders of the 84th Texas Legislature drafted and ratified HB 1164 (2015), prompting the Texas Education Agency to pilot a portfolio assessment option for assessing student writing growth and proficiency. The purpose of this study was to identify the perceptions, characterize the experiences, and identify the forces that influenced initial implementation of the statewide writing pilot. Through interviews with district leaders and the collection of open-ended questionnaires from participating educators, a collective case study method was conducted and allowed for analysis of cross-case themes. The identification of restraining and driving forces affecting implementation of the statewide pilot program provided insight into considerations for next steps in the evaluation of student writing achievement and growth. Three primary perceptions emerged as restraining forces influencing implementation: influences of inadequate funding, inconsistencies of implementation, and navigation of multiple assessment systems. Six primary themes related to driving forces influencing implementation were identified: using sociocultural and authentic methods, engaging in reflective practices, increasing volume and variety of writing opportunities, assessing student growth, aligning methods of instruction and assessment, and reducing stress for students. Effective professional development, dependent upon funding and staffing allocations; two-way channels of communication for participant reflection and feedback; and effective assessment structures must be aligned with the purpose and goals of a student-centered assessment system, which requires collaborative conversations between policy makers, state-level decision makers, and educators.
Educator's Beliefs on the Professional Support Needed for Paraprofessional Librarians in Technology-Rich Elementary Campuses: A Qualitative Narrative Inquiry
Libraries can have a significant impact on today's students and the schools of today and tomorrow. The way students learn is changing as technology changes: rapidly. The knowledge and skills that today's librarians carry can influence the students immensely, including their use of technology. However, with many districts suffering budget cuts, one of the first positions to cut is the certified librarian, replaced by a library paraprofessional. These budget cuts will impact what the libraries can offer students. It is vital that districts support their library program and the person in charge, whether a paraprofessional or certified librarian, to positively impact the students for their future. The purpose of this study was to explore the effectiveness of library programs within a technology-rich school district that utilizes paraprofessionals supported by a certified librarian.
Educators' Perceptions of the Importance of Selected Competencies for Teachers of Students with Emotional and Behavioral Disorders and their Perceptions of Personal Proficiency
This study investigated educators' perceptions of the importance of competencies for teachers of students with emotional and behavioral disorders and their own proficiency in the competencies. Participants included educators who had completed university-based coursework on emotional and behavioral disorders. Competencies from the Qualification and Preparation of Teachers of Exceptional Children study were correlated with CEC's content standards and knowledge skill sets for special education teachers of individuals with emotional and behavioral disorders. Participants ranked 88 competencies on importance and proficiency. Results revealed that educators' proficiency in competencies, their years of experience, and level of education contribute a significant percentage of variance in their ratings of the importance of competencies. Implications for further research are provided.
Educators' Technology Level of Use and Methods for Learning Technology Integrations.
The purpose of this study was to describe technology learning methods that teachers attend and perceive as effective. The goal was to provide district personnel data that may be utilized when planning for more effective technology staff development. This study examined (1) the methods of learning instructional technology that are being utilized by teachers and administrators and (2) why these methods are being utilized in two Texas school districts. Data was collected from educators via an online survey consisting of demographics, technology training methods, level of technology use (CBAM 1 item), stages of adoption and technology level of use (LoTi, 50-item). Educators with different technology levels of use (high, low) differed on their perceptions and utilization of technology training methods. Specifically, educators with different technology levels of use differed in their perceptions of independent online help, and learning through trial and error technology training methods. Results from the study showed that educators tended to use the technology training method that they perceived as most effective. Educators tended to utilize learning by trial and error, peer support, and technology personnel support the most frequently for learning technology integration Educators' in the study had varying technology levels of use based on their educator categories. Administrators tended to score much higher than both elementary and secondary teachers on their technology levels of use. Participants gave a variety of reasons for utilizing certain technology training methods most frequently. The most popular reason was that the method fit into their time schedule followed by the location of the training. The least given reason was that it was the best method for learning the technology skill.
Edvard Munch's Fatal Women: A Critical Approach
This study is the first comprehensive analysis of the fatal woman motif in the writings and art of Edvard Munch from the early 1890s to 1909. It uses a background of the women in the artist's life as well as the literary and artistic worlds in which Munch participated. Following separate accounts of Munch's relationships with five women, the manner in which the artist characterizes each as a fatal woman in his writings and art is discussed and analyzed. Next, the study describes the fatal woman motif in late nineteenth century art and literature. It begins with a discussion of the origin of the Symbolist and Decadent Movements and an ideological examination of the fatal woman motif as it is manifested in the writing and art of these two groups. In addition, it compares Munch's visual manifestations of the femme fatale with the manner in which the artist's contemporaries depicted her. Finally, this study describes two groups of men with whom Munch was particularly close: the Christiania Bohéme and the Schwarzen Ferkel Circle. An examination of the literary works of these men helps to determine the way in which they affected Munch's pictorial perception of the fatal woman.
Edward Larrabee Barnes's Dallas Museum of Art: An Architectural Development Study
This study examines the development of Edward Larrabee Barnes's design concepts for the Dallas Museum of Art, from preliminary concepts and program statements by Director Harry Parker and Dallas Museum trustees, through initial planning and architect selection, to site selection, the Program and Space Study, Barnes's early conceptual plans, and his Dallas Arts District master planning. Influences on Barnes's work and his career development leading to the Dallas commission, his most ambitious museum to date, are examined. Discussion and documentation of design development is based on schematic studies, presentation drawings, models, and trustees' minutes. Design changes during construction and all phases of expansion planning are also discussed. The conclusion summarizes historical influences on the design and Barnes's fulfillment of program concepts.
Edward O. Wilson's "Sociobiology: The New Synthesis": What it Means for Sociology
The implications of sociobiology as presented in Wilson's Sociobiology: The New Synthesis are examined to determine to what extent 1) sociobiology can subsume sociology; 2) sociobiology is antithetical to sociology; 3) sociobiology reflects a movement within sociology. Basic assumptions of sociobiology pertinent to sociology--degree of determinism, existence of human universals, and definitions of society, culture, and human nature--are scrutinized alongside Wilson's view of sociology as a scientific discipline. The thesis explores weaknesses of both sociology and sociobiology and concludes that sociobiology, in ignoring culture as a source of behavioral motivation, is limited in reducing the sociological perspective to a biological one. Although the two disciplines have antithetical foundations, sociology has already begun to incorporate selected aspects of the sociobiological perspective.
Edwin M. Stanton's Special Military Units and the Prosecution of the War, 1862-1865
The purpose of this dissertation is to analyze the six special military units which were authorized and created by the War Department under the direction of Secretary of War Edwin M. Stanton. In relating the military history of such special units the study determines what contributions and significance they made to the Union war effort.
Edwin Shrake: An Introduction and an Interpretation
The purpose of this investigation is to provide a preliminary critical study of a contemporary Texas novelist. Edwin Shrake. No critical studies on his works have been published; therefore, the sources of data for the paper are limited to the novels and reviews of the books. One chapter is devoted to each of Shrake's major works-- But. Not for Love, Blessed McGill, and Strange Peaches. The plot, characterization, themes, regionalism, and artistic techniques of each novel are studied, and the strengths and weaknesses of each are discussed in order to determine its literary merit. The study concludes that Shrake is a regional novelist whose use of a limited setting does not limit the impact of his books. Through his universal themes, Shrake creates novels that are international in scope.
EEG, Alpha Waves and Coherence
This thesis addresses some theoretical issues generated by the results of recent analysis of EEG time series proving the brain dynamics are driven by abrupt changes making them depart from the ordinary Poisson condition. These changes are renewal, unpredictable and non-ergodic. We refer to them as crucial events. How is it possible that this form of randomness be compatible with the generation of waves, for instance alpha waves, whose observation seems to suggest the opposite view the brain is characterized by surprisingly extended coherence? To shed light into this apparently irretrievable contradiction we propose a model based on a generalized form of Langevin equation under the influence of a periodic stimulus. We assume that there exist two different forms of time, a subjective form compatible with Poisson statistical physical and an objective form that is accessible to experimental observation. The transition from the former to the latter form is determined by the brain dynamics interpreted as emerging from the cooperative interaction among many units that, in the absence of cooperation would generate Poisson fluctuations. We call natural time the brain internal time and we make the assumption that in the natural time representation the time evolution of the EEG variable y(t) is determined by a Langevin equation perturbed by a periodic process that in this time representation is hardly distinguishable from an erratic process. We show that the representation of this random process in the experimental time scale is characterized by a surprisingly extended coherence. We show that this model generates a sequence of damped oscillations with a time behavior that is remarkably similar to that derived from the analysis of real EEG's. The main result of this research work is that the existence of crucial events is not incompatible with the alpha wave coherence. In addition to this important …
EEG Signal Analysis in Decision Making
Decision making can be a complicated process involving perception of the present situation, past experience and knowledge necessary to foresee a better future. This cognitive process is one of the essential human ability that is required from everyday walk of life to making major life choices. Although it may seem ambiguous to translate such a primitive process into quantifiable science, the goal of this thesis is to break it down to signal processing and quantifying the thought process with prominence of EEG signal power variance. This paper will discuss the cognitive science, the signal processing of brain signals and how brain activity can be quantifiable through data analysis. An experiment is analyzed in this thesis to provide evidence that theta frequency band activity is associated with stress and stress is negatively correlated with concentration and problem solving, therefore hindering decision making skill. From the results of the experiment, it is seen that theta is negatively correlated to delta and beta frequency band activity, thus establishing the fact that stress affects internal focus while carrying out a task.
Effect of 2,450 MHz Microwave Radiation on Microorganisms
The effect of microwave radiation on soil bacteria in situ has been studied in both lab and field conditions. Radiation and thermal profiles show that heterotrophic bacteria, spores, fungi, and actinomycetes were not affected by total microwave radiations over the range 0 to 80 seconds of exposure at a net input of 1 KW of intensity. Nitrogen-fixing bacteria and nitrifying bacteria were also resistant to these doses. The soil microorganisms were inactivated as a function of microwave radiation in the range of 80 to 480 seconds of exposure to 1 KW of continuous radiation. By studying the relationship between temperature generated in dry and wet organisms and the pattern of destruction of inoculated bacteria by microwave radiation, it was found that inactivation was a function of cell hydration. It also revealed that bacterial cells do not absorb microwave energy and that the lethal effect of microwaves is due to direct energy transfer to cell water and the temperature increase of the suspending medium.
The Effect of a Brief Acceptance-Based Protocol on Health Related Relational Framing
Behavior analysts who study verbal behavior theorize that people derive relationships between stimuli - forming stimulus classes such that psychological functions transfer among stimuli and therefore affect behavior. Verbal processes are thought to play a role in cancer patients' behavioral flexibility. The current study examined if an analogue intervention produced changes in relations between health-relevant stimuli from pre- to post-test in patient and student samples. A matching-to-sample (MTS) task required participants to form three 4-member classes that included health, treatment, or neutral terms. Participants next listened to either an acceptance-based or a control-based rationale and therapy exercise, or a distracter task. Then, they were re-exposed to the MTS task. Latencies and accuracies for learning each class as well as between condition differences were examined. Finally, changes in ratings of stimuli from pre to post analogues were measured. Differences in stimuli ratings were seen in the student sample, reflecting transfer of function and some reduction in responsiveness to stimuli following intervention, but overall no learning performances are found. Discussion explores the consistency of the findings with acceptance and commitment therapy (ACT) theory in light of the seemingly lack of findings.
The Effect of a Change Facilitator on Project-Based Learning Curriculum Design
This study sought to understand concerns and levels of use of a group of teachers in the process of developing a project-based learning (PBL) program, and the effect of a change facilitator on these processes. The research was guided by the following research questions: One, what are the concerns of teachers regarding the planning of a PBL curriculum? Two, what are the levels of use of teachers in the process of planning the PBL curriculum? Three, how does a change facilitator affect the process of change in the planning of a PBL curriculum? The population of this study consisted of seven subject area high school teachers and one district level administrative staff member. This study used the concerns-based adoption model (CBAM) to study the PBL innovation. CBAM is a conceptual framework that describes, explains, and predicts teachers' concerns and behaviors throughout the change process in education. In this study, the teachers progressed through the levels of use on a timeline at a rate that was much more rapid that what is typical for implementation of an innovation in an educational setting. This rapid progression was the function of the teacher population studied and the change facilitator that led the PBL curriculum design process. With the leadership of the change facilitator, the goals of the PBL curriculum innovation were realized, and the team created a PBL curriculum with multidisciplinary PBL products that could be implemented after the development phase.
The Effect of a Child Development Unit on Attitudes of Homemaking Students
The purpose of this study is to determine whether a unit on child development, planned cooperatively by the teacher and pupils, is effective in changing the attitudes of junior high school girls toward younger children.
The Effect of a Free-Time Contingency on Arithmetic and Problem Behavior in the Classroom
This investigation is concerned with demonstrating the effects of an easily managed classroom contingency-management treatment package on increasing arithmetic performance while decreasing disruptive behavior for whole classes of students. The study proposed, among other things, that programs differ in the degree to which each student must depend upon other students for reinforcement
The Effect of a Free-Time Contingency on Peer Acceptance and Rate of Speed in Working Arithmetic Problems
The primary concern in today's educational system is the rate of progress students achieve in the classroom. Research has shown token reinforcement programs to be an effective method of increasing rate of work in the classroom; however, token economies are time consuming and do not meet the needs of all classroom situations. The purpose of this study was to test the effectiveness of the use of free time as a reinforcer in increasing rate of speed in working arithmetic problems and peer acceptance (how well an individual is accepted by his peers). The data indicated that free time as a positive reinforcer did increase the rate of speed in working arithmetic problems correctly; however, it did not affect peer acceptance.
The Effect of a Laboratory-based, In-context, Constructivist Teaching Approach on Preservice Teachers' Science Knowledge and Teaching Efficacy.
This study began with a concern about elementary teachers, as a whole, avoiding the teaching of science in the elementary classroom. The three main factors noted as reasons for this avoidance were: (1) minimum science requirements to reach certification, leading to a lack of preparedness; (2) lack of exposure to science in elementary school; and (3) general dislike for and understanding of science leading to a low self-efficacy in science teaching. The goal of the Environmental Science Lab for Elementary Educators (ESLEE) was to conduct an intervention. The intervention was lab-based and utilized in-context, constructivist approaches to positively influence participants' abilities to retain science content knowledge and to affect their belief in themselves as teachers. This intervention was created to respond to all three of the main avoidance factors noted above. The research utilized a quasi-experimental, pretest-posttest control group design. Two pretests and two posttests (science teaching efficacy and content knowledge) were given to all 1,100 environmental science lab students at the participating institution over two long semesters. Three experimental/control groups were formed from this population. The Experimental Group was comprised of 46 students who participated in the ESLEE Intervention. Control Group 1 was comprised of 232 self-described preservice educators (SDPEEs) in "regular" labs. Control Group 2 was comprised of 62 nonSDPEEs taught by ESLEE instructors in "regular" lab settings. A DM MANOVA was used to analyze the data. The results demonstrated that the ESLEE Intervention was statistically significant at the p> .05 level for science teaching efficacy between the Experimental Group and Control Group 1, and was statistically significant for both content knowledge and efficacy between the Experimental Group and Control Group 2. More notably, the effect size (delta) results ranged from .19 to .71 and .06 to .55 (partial eta squared) and demonstrated the practical significance of implementing …
Effect of a Liquid Meal upon Performance in Selected Track and Field Events
The problem of this study was to search for possible effects of the pre-competition meal. This problem had two primary facets: 1) to determine performance scores secured by college varsity track and field men under two different pre-competition meal conditions and to study the relationship of the meal last ingested before competition to the scores; 2) to determine the concern for certain psychological and psycho-physiological factors under each of the two pre-competition meal conditions.
The Effect of a Phonetic Approach Speech Improvement Program on Sound Discrimination, Reading Achievement, and Developmental Articulation
The purpose of this study is to determine if a phonetic approach to speech improvement has a relationship to reading achievement, sound discrimination, and developmental articulation at the first-grade level.
The Effect of a Physical Conditioning Program on Physical Fitness and Health Locus of Control Among Adolescent Substance Abusers
The purpose of this investigation focused on determining the effects of a physical conditioning program on physical fitness and health attitudes on inpatient adolescent male substance abusers during and following participation in a six week fitness program. The fitness measures chosen for this study were the 1 1/2 mile run, skinfold, sit-and-reach, and grip strength. The first four of these measures make up the AAHPERD test battery (AAHPERD, 1980). The Health Attribution Test (Lawlis and Lawlis, 1980) was administered to determine health locus of control.
The Effect of a Program of Operant Conditioning of Autonomically Mediated Behavior on Manifest Anxiety
The purpose of this experiment was to initiate research into the use of operant conditioning of autonomically mediated behavior (OCAM) in the modification of maladaptive behavior. Anxiety was chosen as a target behavior because of its apparent pervasiveness among many different maladaptive behaviors.
Effect of a Six-Week Training Program on the Physical Condition of Primary Grade Girls
The purpose of the study was to examine changes in cardiovascular function and neuromuscular performance of primary grade girls after a six-week treatment program. The Kraus-Weber Tests and modified Harvard Step Test were administered to sixty-seven subjects before and after the treatment program, which consisted of exercises and running for the experimental group and sedentary games for the control group. None of the significant differences in recovery heart rate or the Kraus-Weber tests could be attributed to the treatment program. The length of training program was apparently not enough to detect change in fitness level of the subjects. A need exists for exercise tests that are more meaningful and more easily administered.
The Effect of a Special Orientation Program for Entering Freshmen on Attrition, Satisfaction, and Grade Point Average
This study was initiated to assess the effectiveness of a special orientation program with the purpose of reducing the anxiety of entering freshmen and easing their adjustment to the campus environment. The criteria of evaluation were retention, satisfaction, and academic achievement. The 468 subjects were first-time freshmen from outside Tarrant County entering Texas Christian University in the fall of 1980. Half of the subjects participated in the experimental program, Operation Welcome, and the other half served as a control group. Those in Operation Welcome were grouped in teams with eight other freshmen, two upperclassmen serving as a big brother and big sister, and a local alumni family. Each of the freshmen in the program received letters of welcome prior to leaving home and participated in special events upon arrival on campus.
Effect of a Stimulus Shaping Procedure on Fluent Letter Sound Acquisition.
Numerous studies have evaluated and confirmed many benefits of errorless learning and fluency-based procedures. The purpose of this study was to evaluate the benefits of combining an errorless learning procedure, stimulus shaping, and fluency-based procedures to teach see/say letter sound discriminations to three preschool children. Participants were taught 6 letter sounds using a hear/point stimulus shaping procedure followed by a see/say fluency-based procedure. A second letter set was taught using only the fluency-based procedure. Results showed that combining the procedures reduced the amount of teaching time by up to 40% and the percent of errors by up to 50%. This preliminary evidence shows exceptional promise in application of this combination of procedures to teach letter sounds to preschool children.
The Effect of A Summer Group Counseling Institute on Selected Attitudes and Personality Characteristics of Junior College Counselors
The problem of this study was to measure attitudinal and personality changes that took place in junior college counselors as a result of a short-term group counseling institute.
The Effect of a Telementoring Program on Beginning Teacher Self-efficacy.
This study examined whether the telementoring program had a positive impact on beginning teacher self-efficacy. Telementoring is an adaptation of mentoring, using telecommunications technology as the means to establish and maintain mentoring relationships between the participants. The program was intended to create an atmosphere of community; to provide expert training in the profession; to retain good teachers; and to offer support for the new teacher in times of self-doubt. A quasi-experimental design and mixed methods measures were used to determine the effect of a telementoring program on beginning teacher self-efficacy. Participants were members of a district induction/mentoring program. An experimental group of 20 first-year teachers that participated in a supplemental telementoring program were compared to 20 first-year teachers who did not. The Teachers' Sense of Efficacy Scale was used to collect data on beginning teacher self-efficacy. A pretest was administered prior to the treatment and members completed a post-test at the conclusion of the study. Results were analyzed using a one-way analysis of variance. The experimental and control group results from both assessments were measured and compared. No statistically significant differences were found between the experimental group that participated in the telementoring program and those in the control group who did not. Messages posted to a discussion board were analyzed by comparing concerns of beginning teachers in this study to concerns of beginning teachers found in current literature. A compilation of concerns served as a comparison framework. Participants in this study discussed many of the same issues and concerns found in current literature. Although statistically significant results were not found, discussion board postings suggest that telementoring is an effective form of mentoring and provides beginning teachers a forum for collegiality and support, which contributes to self-efficacy.
The Effect of Accelerated Instruction on Summer Regression
The purpose of this study was to evaluate the benefit accrued to fifth-grade students who participated in a summer school accelerated instruction program utilizing accelerated instructional practices in a Texas school district. The secondary intent was to determine the program's effect on student regression or retention as measured by Measures of Academic Progress (MAP) scores and State of Texas Assessment of Academic Readiness (STAAR) tests in reading and mathematics. The district provided summer accelerated instruction to fifth-grade students who did not pass reading and/or mathematics portions of STAAR for the May administration. For this study, I focused on the 2018 summer accelerated instruction offered by the district, using a mixed methods design to analyze the effectiveness of accelerated instruction for the students who participated in the summer program. A paired samples t-test was conducted to evaluate if students who failed the May STAAR in either reading or mathematics increased their scores on the June STAAR. Also, a paired samples t-test was conducted to determine if these same students increased their fall MAP test when compared to the spring MAP test. Teachers were interviewed to determine their perceptions of the most beneficial parts of summer school for students who attended. The results showed that attending the 2018 summer accelerated instruction program had a statistically significant effect on STAAR reading and mathematics scores and a statistically significant effects on the MAP reading and mathematics scores. Three themes emerged from the teacher interviews as being benefits of accelerated instruction: administrative support, a growth focus, and social and emotional health.
Effect of Acute Alcohol Ingestion on Resistance Exercise Induced mTORC1 Signaling in Human Muscle
The purpose of this project was to further elucidate the effects post-exercise alcohol ingestion. This project had many novel aspects including using a resistance exercise (RE) only exercise design and the inclusion of women. To our knowledge, we are the first to investigate the effect of post-RE alcohol ingestion in women. In the first chapter of this project, information on the prevalence of alcohol use and the importance of skeletal muscle as a dynamic and metabolic tissue was provided. In chapter two, the effects of post-RE alcohol ingestion in men and women are detailed. The major findings of this study was that although RE elicited similar mTORC1 signaling both in men and in women, alcohol ingestion appeared to only attenuate RE-induced phosphorylation of the mTORC1 signaling pathway in men. The third chapter focused on examining the effects of post-RE alcohol ingestion on acute testosterone bioavailability. The primary findings of this study was that alcohol substantially elevated serum total and free testosterone concentrations during recovery from a bout of resistance exercise. The fourth chapter detailed factors that contribute to bone density in men. The major findings of this study was that young adult male long-distance runners who participated in resistance training at least once per week had greater bone mineral density than their non-resistance trained and non-exercise trained peers.
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.
The Effect of Age or Previous Post-Secondary Experience on Student Evaluation of Instruction
The increase in the number of nontraditional aged undergraduate students (25 yrs. and older) and students transferring between post-secondary institutions has raised the question of whether effective instruction is viewed the same by these different groups of students. This study addressed this question by analyzing the responses of these different groups to 23 instructional questions on a standard faculty evaluation form.
The Effect of Aging on the Respiratory Response of Rat Heart Tissue Slices to Metabolic Inhibitors
This investigation was undertaken to explore biochemical changes which may occur in heart tissue with age. In this connection, the cellular enzymes were of special interest.
The effect of algebra of sets instruction as an introductory technique on basic concepts comprehension and mathematics attitude of algebra students
The problem with which this study was concerned was to seek mathematics attitude changes, mathematics self-concept changes, and compare comprehension of concepts in college students enrolled in freshman algebra, when introduced to basic algebraic properties by way of algebra of sets as opposed to an axiomatic introduction.
Effect of Alloy Composition, Free Volume and Glass Formability on the Corrosion Behavior of Bulk Metallic Glasses
Bulk metallic glasses (BMGs) have received significant research interest due to their completely amorphous structure which results in unique structural and functional properties. Absence of grain boundaries and secondary phases in BMGs results in high corrosion resistance in many different environments. Understanding and tailoring the corrosion behavior can be significant for various structural applications in bulk form as well as coatings. In this study, the corrosion behavior of several Zr-based and Fe-Co based BMGs was evaluated to understand the effect of chemistry as well as quenched in free volume on corrosion behavior and mechanisms. Presence of Nb in Zr-based alloys was found to significantly improve corrosion resistance due to the formation of a stable passive oxide. Relaxed glasses showed lower rates compared to the as-cast alloys. This was attributed to lowering of chemical potential from the reduced fraction of free volume. Potentiodynamic polarization and Electrochemical Impedance Spectroscopy (EIS) techniques helped in quantifying the corrosion rate and polarization resistance. The effect of alloy composition was quantified by extensive surface analysis using Raman spectroscopy, energy dispersive x-ray spectroscopy and auger spectroscopy. Pitting intensity was higher in the as-cast glasses than the relaxed glasses. The electrochemical behavior of a Zr-Ti-Cu-Ni-Be bulk metallic glass subjected to high strain processing was studied. High strain processing caused shear band formation and an increase in the free volume. Potentiodynamic polarization and EIS showed a strong correlation between the enthalpy of structural relaxation and corrosion rate and polarization resistance. Pitting was observed to preferentially occur on shear bands in the processed samples, while it was stochastic in unprocessed glass. The corrosion analysis of Co-Fe glasses showed an increase in corrosion current density when Fe content was increased from 0 to 7 at%. The corrosion resistance improved when Fe content was further increased to 15 at%. Similar trend was …
The Effect of Alternative Stress Response Training on Bulimic Behaviors
The incidence of bulimia has been increasingly documented in recent years. Treatments have focused on one behavior in the Binge-Purge chain or have combined several treatment components. This study was designed to assess the effect of teaching bulimics alternative responses for dealing with stressful events.
The Effect of Ambiguity on Peak Weightlifting Performance : A Study of Experienced Weightlifters
Recent studies in the area of sport and exercise science have suggested that weightlifting performance may be significantly improved under ambiguous conditions—namely, when the amount to be lifted is unknown. In the present study, procedural concerns from previous studies examining the effect of ambiguity were noted and a methodological variation was introduced.
The Effect of American Political Party on Electoral Behavior: an Application of the Voter Decision Rule to the 1952-1988 Presidential Elections
The purpose of this study is to examine two major psychological determinants of the vote in presidential elections - candidate image and party orientation. The central thesis of this study is that candidate image, as measured here, has been a greater determinant of electoral choice in the majority of presidential elections since 1952 than has party orientation. One of the vices as well as virtues of a democratic society is that the people often get what they want. This is especially true in the case of electing our leaders. Political scientists have often concentrated their efforts on attempting to ascertain why people vote as they do. Studies have been conducted focusing on the behavior of voters in making that important decision-who should govern?
Effect of Amines as Corrosion Inhibitors for a Low Carbon Steel in Power Industry
Commonly used amines in power industry, including morpholine, DBU (1,8-diazabicyclo[5.4.0]undec-7-ene), and DMA (dimethylallylamine) were evaluated for their effect on AISI 1018 steel at 250oF. Samples were exposed to an autoclave containing amine added aqueous solution at pH of 9.5 for 1, 2, 4, 6, 8, and 12 hours. Morphology studies were carried using scanning electron microscope (SEM), phase analysis was done utilizing Fourier transform infrared spectroscopy (FTIR), and weight loss was performed to assess kinetics of oxidation. Control samples showed the highest metal dissolution rate. DBU showed the best performance in metal protection and SEM indicated the presence of a free-crack layer formed by fine particles in that set. FTIR showed that DBU apparently favored the formation of magnetite. It is believed that fine particles impede intrusion of aggressive ions into the metal surface by forming a barrier layer. FTIR demonstrated that DMA formed more oxyhydroxides, whereas morpholine presented magnetite to hematite transformation as early as 2 hours. SEM revealed that control and DMA produced acicular particles characteristic of oxyhydroxides while morpholine and DBU presented more equiaxed particles.
Effect of Amino Acids on Growth and Cartenogenesis in Corynebacterium Species Strain 7E1C
Studies were evaluated on the effects of known growth factors on the growth and carotenogenesis of Corynebacterium species strain 7ElC. The complex medium, Tryptic Soy Broth,was found to stimulate growth and production of more pigment in the light and in the dark than did a mineral salts-glucose medium. A complete amino acid mixture added to LSG enhanced carotenogenesis in the dark in Corynebacterium 7ElC, while B-vitamins retarded carotenogenesis. No absolute requirement for one or more amino acids was found,indicating a multiple amino acid requirement. The fewest amino acids found to stimulate carotenogenesis in the dark were a combination of those in the Serine and Histidine families which include serine, glycine, cysteine, and histidine.
The Effect of an Adaptation of the Lozanov Method on Vocabulary Definition Retention
The purpose of the study was to determine if there is an effect on retention of vocabulary when music and imagery are used, to accelerate learning. As background for the study four brain functioning theories as developed from recent neuroscientific research were explored. These were the theory of right/left cerebral dominance (Sperry & others), triune brain theory (MacLean), taxon and locale long term memory (O'Keefe & Nadel), and holographic memory (Pribram). These four theories all suggest multiple channels of input will increase information retention. The research utilized three conditions: an experimental condition of music plus imagery, an experimental condition of music only, and a no treatment condition.
The Effect of an Eight-Week Training Program upon Leg Strength and Running Speed in Middle-School-Age Boys
The purpose of this study was to determine the effects of an eight-week weight training program upon leg strength and running speed of middle-school-age boys.
The Effect of an Electronic Evaluation Questionnaire Format on the Return Rate From Field Supervisors.
The purpose of this study was to examine the usefulness of electronic-based questionnaires as a tool to gather data from field supervisors in the medical profession at various military bases. The study compared the response effects of an electronic evaluation questionnaire with the traditional method of paper-based questionnaires in gathering Level 3 data. The number of returns affects the amount of information available to the course personnel in creating a viable program that ensures the success of service members entering the occupational field and, ultimately, affecting the number of service members who remain beyond their first enlistment. The return rate and amount of missing data were tracked. Supervisors of graduates of a medical program who had observed service members for a minimum of 4-months were participants in the study. The z-test for comparing two proportions was used to determine significance of the study at the .05 level. Findings indicate that there was a significant difference in return rates and the amount of missing data when using the electronic format. Based on this study, the electronic-based questionnaire as a data-gathering tool provided a higher number of returns in a quicker time frame with fewer missing data in the technical training environment. Copyright is held by the author, unless otherwise note
The Effect of an Expressed Level of Aspiration in Determining Performance on a Subsequent Task
There have been few investigations employing the level of aspiration as a motivational independent variable. The problem of the present study was to investigate the effect of an expressed level of aspiration on a subsequent level of performance on a cancellation task and to relate this effect to socio-economic classifications.
The Effect of an In-Service Program Utilizing Bloom's Taxonomy on Teachers' Self-Concepts, Cognitive Level of Test Construction, and Attitudes of Students
The problem of this study was to investigate the effect of an in-service program utilizing Benjamin S. Bloom (Ed.) and others' Taxonomy of Educational Objectives, Handbook I: Cognitive Domain (Bloom's Taxonomy) on (1) the self-concept of experienced secondary English teachers and social studies teachers, (2) the cognitive level of test items on teacher-made examinations, and (3) the attitude changes toward school subjects as rated b students.
The Effect of an Instructional Program on the Creative Thinking Skills, Self-Concept, and Leadership of Intellectually and Academically Gifted Elementary Students
This study sought to determine the effectiveness of an instructional program for developing creative thinking, a positive self-concept, and leadership among intellectually and academically gifted elementary students in grades four, five, and six. The purposes of the study were to determine the effect of experimental treatment on test scores measuring creativity, self-concept, and leadership; to compare the performance of the moderately intellectually gifted with that of the highly intellectually gifted; to determine whether boys or girls benefited more from instruction; and to determine whether fourth-, fifth-, or sixth-grade students achieved greater test gains after experimental treatment.
The Effect of an Introductory Economics Course on Liberalism/Conservatism
The problem with which this investigation is concerned is that of determining the differential impact of an introductory economics course on the liberalism/conservatism of students, as compared to an introductory course in sociology or psychology. In addition, the study seeks to determine whether a significant relationship exists between a course in microeconomics and student conservatism. The source of data is the pre- and posttest class means of the scores on the Rokeach Opinionation Scale, measuring liberalism/conservatism. Chapter Five contains the conclusion that there is a significant difference between postmean scores on liberalism/conservatism of the students in economics and those in sociology or psychology. Also, an introductory course in microeconomics produces significantly different mean gains in student conservatism, as measured by the Opinionation Scale/compared to mean gains in an introductory course in sociology or psychology. A nonhypothesized relationship emerged between teacher attitude and student posttest mean scores on the Opinionation Scale.
The Effect of Analogy-Structured Teaching on Student Achievement in Ninth-Grade Physical Science
The purpose of this study is to investigate the effects of using verbal analogies in teaching ninth-grade physical science. The experiment is designed to determine if teaching by analogies is more effective than conventional methods of teaching, and to ascertain the effect of analogies on achievement for different ability levels in different subject areas of physical science.
Effect of Anterior or Ventromedial Hypothalamic Stimulation on Immunoglobulin G
Although research has linked central nervous system activity with changes in immunoresponsivity, research on the possible role of the central nervous system in altering a specific class of antibody is lacking. This study was an investigation of the possible relationship between anterior or medial hypothalamic functions on Immunoglobulin G. concentrations in rat serum. Thirty-six male albino rats were randomly assigned to three groups of equal size. Animals within the anterior hypothalamic group received bilateral electrode implants in the anterior hypothalamus while animals in the medial hypothalamic group received electrode implants within the ventromedial area of the hypothalamus. A control group received bilateral electrode implants within the lateral hypothalamus. Electrical brain stimulation was administered to animals in both experimental groups. Control animals spent a comparable time in an operant chamber but did not receive electrical brain stimulation. Following brain stimulation of animals within the experimental groups, Immunoglobulin G. concentrations were determined for all groups 3, 6, 12, and 24 hours post-stimulation sessions.
The Effect of Antioxidant Ascorbic Acid upon the Ascorbic Acid Content of Certain Frozen Fruits
The purpose of this study is to determine the reduced and dehydroascorbic acid of certain frozen fruits prepared with and without ascorbic acid as an antioxidant.
Effect of Anxiety on Achievement Test Scores of Children in the Sixth Grade
The purpose of the present study will be to test the relation between Test Anxiety Scores and Stanford-Achievement Test scores and to determine whether there sill be differences of significant values within the sub-tests on the achievement tests.
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