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An Experimental Study in Teaching Mathematical Concepts Utilizing Computer-Assisted Instruction in Business Machines

An Experimental Study in Teaching Mathematical Concepts Utilizing Computer-Assisted Instruction in Business Machines

Date: December 1976
Creator: Hughes, Robert J.
Description: None
Contributing Partner: UNT Libraries
An Experimental Study of Bifurcated (Weekend and Weekday) and Unitary (Past Week) Retrospective Assessments of Sleep

An Experimental Study of Bifurcated (Weekend and Weekday) and Unitary (Past Week) Retrospective Assessments of Sleep

Access: Use of this item is restricted to the UNT Community.
Date: August 2016
Creator: Sethi, Kevin J.
Description: Discordance between weekday and weekend sleep schedules is common (Bonnet & Arand, 1995; Breslau, Roth, Rosenthal, & Andreski, 1997; Machado, Varella, & Andrade, 1998; Strauch & Meier, 1988; Tsai & Li, 2004). Brief retrospective self-report measures are essential for epidemiological research studies (Moul, Hall, Pilkonis, & Buysse, 2004), but self-reports are prone to error in recall, and the greater the variability in nightly sleep, the less reliable are retrospective reports (Babkoff, Weller, & Lavidor, 1996). More accurate self-report responses may be possible if measures prompt participants to consider variations in sleep schedules that are consistent (i.e., weekday and weekend sleep schedules). The current study experimentally examined whether Bifurcated (Weekday and Weekend) retrospective assessments of sleep are more accurate than Unitary (Past Week) assessments. Participants were randomly assigned to complete one of the two versions (Bifurcated vs. Unitary) of the Sleep Questionnaire. One hundred and thirty-one participants were included in the analyses. Results of a a series of analyses demonstrated that the Bifurcated version of the Sleep Questionnaire provided more accurate and less variable estimates of total sleep time than the Unitary version of the Sleep Questionnaire. Differences between the versions of the Sleep Questionnaire for other sleep variables were less ...
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An Experimental Study of Collision Broadening of some Excited Rotational States of the Bending Vibration of Methyl Cyanide

An Experimental Study of Collision Broadening of some Excited Rotational States of the Bending Vibration of Methyl Cyanide

Date: May 1993
Creator: Hajsaleh, Jamal Y. (Jamal Yousef)
Description: A double modulation microwave spectrometer is used to evaluate the linewidth parameters for some excited rotational components in the bending vibration v_8 of 13CH3 13C 15N and 13CH3C15N isotopomers of methyl cyanide. The linewidth parameters for self-broadening of the ΔJ=2←1 rotational components for the ground v_8 , 1v_8, and the 2v_8 vibrations were determined over a pressure range of 1 to 13 mtorr and at a temperature of 300 K. The double modulation technique is used to explore the high eighth derivative of the line shape profile of the spectral line. This technique proved to give good signal-to-noise ratios and enabled the recovery of weak signals. An experimental method is developed to correct for source modulation broadening. The tests of the ratios of the two inner peak's separation of the eighth derivative of the line showed that they were up to 95% similar to those for a Lorentzian line shape function. The line shapes were assumed to be Lorentzian for the theoretical analysis of the derivative profiles and comparisons were made between experiment and theory on this basis. Dipole moments for vibrationally excited states were calculated from linewidth parameters and show systematic decrease with the increase of excitation. Impact parameters ...
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An Experimental Study of Critial Thinking in Student-Centered Teaching

An Experimental Study of Critial Thinking in Student-Centered Teaching

Date: June 1961
Creator: Graham, Daniel W.
Description: The problem of this study was to determine the effectiveness of student-centered teaching in producing significant changes in certain critical thinking abilities among selected freshmen students at North Texas State College.
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An Experimental Study of Intonation Factors of the Cornet and Trumpet

An Experimental Study of Intonation Factors of the Cornet and Trumpet

Date: August 1971
Creator: McMahon, Ann E. (Ann Elizabeth)
Description: Many musicians have theorized that intonation would be improved if all players in a band or orchestral section used instruments of identical dimensions and material. This study consists of a test taken under experimental conditions comparing the Conn 38A cornets used in the North Texas State University Concert Band with a random selection of trumpets, using the same performers for both sets of instruments.
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An Experimental Study of Personality Development in the Stenography Class of the Edinburg High School

An Experimental Study of Personality Development in the Stenography Class of the Edinburg High School

Date: 1948
Creator: Moore, Phelma Newton
Description: The purpose of this study is (1) to make a survey of all personality training procedures in an attempt to adapt those methods to the instructional problems of schools having a large Latin-American enrollment, and (2) to correlate personality development with the study of stenography and job finding by giving it specific emphasis in such a course.
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An Experimental Study of Student Progress in General Mathematics

An Experimental Study of Student Progress in General Mathematics

Date: 1947
Creator: Christian, Jewel Morris
Description: The purpose of this investigation is to make an experimental study of the compiled data obtained from the results of three standardized tests that were administered to two groups of general mathematics students during one semester; and to determine, if possible, by the scores, whether the prescribed course in mathematics makes for any significant increases, or losses in student progress.
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An Experimental Study of Teachers' Verbal and Nonverbal Immediacy, Student Motivation, and Cognitive Learning in Video Instruction

An Experimental Study of Teachers' Verbal and Nonverbal Immediacy, Student Motivation, and Cognitive Learning in Video Instruction

Date: May 2000
Creator: Witt, Paul L.
Description: This study used an experimental design and a direct test of recall to provide data about teacher immediacy and student cognitive learning. Four hypotheses and a research question addressed two research problems: first, how verbal and nonverbal immediacy function together and/or separately to enhance learning; and second, how immediacy affects cognitive learning in relation to student motivation. These questions were examined in the context of video instruction to provide insight into distance learning processes and to ensure maximum control over experimental manipulations. Participants (N = 347) were drawn from university students in an undergraduate communication course. Students were randomly assigned to groups, completed a measure of state motivation, and viewed a 15-minute video lecture containing part of the usual course content delivered by a guest instructor. Participants were unaware that the video instructor was actually performing one of four scripted manipulations reflecting higher and lower combinations of specific verbal and nonverbal cues, representing the four cells of the 2x2 research design. Immediately after the lecture, students completed a recall measure, consisting of portions of the video text with blanks in the place of key words. Participants were to fill in the blanks with exact words they recalled from the videotape. ...
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An Experimental Study of the Effect of a Career Education Program on Academic Achievement and Attitudes of Fifth-Grade Students

An Experimental Study of the Effect of a Career Education Program on Academic Achievement and Attitudes of Fifth-Grade Students

Date: August 1975
Creator: Bryant, Rita S.
Description: None
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An Experimental Study of the Electrodeposition of Lead

An Experimental Study of the Electrodeposition of Lead

Date: June 1937
Creator: Roberts, Ira Clifford
Description: This thesis aimed to study some of the general principles underlying electrodeposition together with experimental facts regarding the effects of changing constituents of the plating solutions, variations in hydrogen-ion concentrations, and variation in current density used in the electrodeposition of lead.
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Experimental Study on Fluidization of Biomass, Inert Particles, and Biomass/Sand Mixtures

Experimental Study on Fluidization of Biomass, Inert Particles, and Biomass/Sand Mixtures

Date: May 2011
Creator: Paudel, Basu
Description: Fluidization of biomass particles is an important process in the gasification, pyrolysis and combustion in order to extract energy from biomass. Studies on the fluidization of biomass particles (corn cob and walnut shell), inert particles (sand, glass bead, and alumina), which are added to facilitate fluidization of biomass, and biomass/sand mixture were performed. Experiments were carried out in a 14.5 cm internal diameter cold flow fluidization bed to determine minimum fluidization velocities with air as fluidizing medium. On the of basis of experimental data from both present work and those found in the literature, new correlations were developed to predict minimum fluidization velocity for inert particles as well as biomass particles. It was found that the proposed correlations satisfactorily predict minimum fluidization velocities and was in well agreement with experimental data. Furthermore, effect of weight percentage of biomass in the biomass/sand mixtures was studied. The weight fraction of biomass particles in the mixture was chosen in the range of 0 ~ 100 wt. %. The results show that minimum fluidization velocity of the mixtures increases with an increase in biomass content. Using the present experimental data, a new correlation was developed in terms of mass ratio for predicting values of ...
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An Experimental Study on Situated and Dynamic Learning Assessment (SDLA) Environment

An Experimental Study on Situated and Dynamic Learning Assessment (SDLA) Environment

Date: May 2010
Creator: Lee, Zeng-Han
Description: The current supplementary web based English learning in Taiwan provides online learning resources and gives assessments at the end of each lesson to evaluate learners' online learning results. Based on the testing results, instructors may adjust their in-class instructional method to focus on the students' weaknesses. For the average classroom size of 40 students with one instructor, it is extremely difficult to provide individual learning content for each learner's needs because each student has his or her own weaknesses. This study conducted the situated environment with Vygotsky's dynamic assessment theory to test learner's learning achievements and satisfactions as compared to the current web learning environment. The study finds that when both groups of Taiwanese students used Internet based learning, those that utilized the situated and dynamic learning assessment environment showed a statistically significant higher achievement score than those using only the current online learning environment (p < .01). In addition, learners in the SDLA environment had statistically significant higher satisfaction scores than those in the current web learning environment.
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An Experimental Study on the Reading of Comics

An Experimental Study on the Reading of Comics

Date: 1949
Creator: Pinckley, Marie
Description: It is the purpose of this study to (1) determine the history and status of the comic book; (2) to find out how many and what kinds of comic books two groups of fourth graders of the Perryton school are reading; (3) to set up a well-planned reading program in one of these groups; (4) to compare the amount and kinds of comic books read by the two groups at the end of the experimental period.
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An Experimental Study to Ascertain the Amount of Achievement Made in Reading Comprehension, Vocabulary, and Social Studies by the Use of Audio-Visual Aids

An Experimental Study to Ascertain the Amount of Achievement Made in Reading Comprehension, Vocabulary, and Social Studies by the Use of Audio-Visual Aids

Date: 1951
Creator: Bushnell, Mildred Searcy
Description: The present study is an attempt to obtain, from two groups of students, useful facts with which to evaluate the most effective method of presenting educational materials to junior-high-school students. The study is an attempt to measure and evaluate the achievement made in social studies, reading comprehension, and vocabulary in 1949 and 1950. The following questions form the basis for the present study: What method is best for the purpose of presenting materials to a class? Which method helps to solve the problem of the student most effectively? By which method is greater achievement made? If the two methods prove of equal value, then how much achievement may be attributed to the use of each method?
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An Experimental Study to Compare Audio-Tutorial Instruction with Traditional Instruction in Beginning Typewriting

An Experimental Study to Compare Audio-Tutorial Instruction with Traditional Instruction in Beginning Typewriting

Date: August 1974
Creator: Jones, Arvella
Description: None
Contributing Partner: UNT Libraries
Experimental Synchronization of Chaotic Attractors Using Control

Experimental Synchronization of Chaotic Attractors Using Control

Date: December 1994
Creator: Newell, Timothy C. (Timothy Charles)
Description: The focus of this thesis is to theoretically and experimentally investigate two new schemes of synchronizing chaotic attractors using chaotically operating diode resonators. The first method, called synchronization using control, is shown for the first time to experimentally synchronize dynamical systems. This method is an economical scheme which can be viably applied to low dimensional dynamical systems. The other, unidirectional coupling, is a straightforward means of synchronization which can be implemented in fast dynamical systems where timing is critical. Techniques developed in this work are of fundamental importance for future problems regarding high dimensional chaotic dynamical systems or arrays of mutually linked chaotically operating elements.
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An Experimental Technique for the Objective Quantification of Body-Image Distortion

An Experimental Technique for the Objective Quantification of Body-Image Distortion

Date: July 1971
Creator: Lemon, James M.
Description: The purpose of this study was to develop an experimental technique to objectively measure the deviation between an individual's perception of his body image and his actual image. In addition, this technique was utilized to compare the accuracy of perception of body image between institutionalized and non-institutionalized individuals. Half of each subject category was also compared in terms of performance on an additional perceptual task unrelated to body image.
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An Experimental Treatment of Inaccurate Singers in the Intermediate Grades

An Experimental Treatment of Inaccurate Singers in the Intermediate Grades

Date: August 1945
Creator: Allen, Sheila Emery
Description: A study of the causes and remedial treatment of inaccurate singing through experimentation and research was chosen by the writer as a practical problem urgently in need of solution.
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Experimental Trichinosis in Birds

Experimental Trichinosis in Birds

Date: December 1970
Creator: Poon, Yau-Lun
Description: This work concerns itself with essentially four experiments: (1) the cecum-injective-infection experiment; (2) the anus-injective-infection experiment; (3) the mouth ingestive-infection with larvae, and (4) the mouth ingestive-infection with the flesh of infected rats.
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An Expert System Approach to the Evaluation of Hypertext Engineering : An Experiment with KnowledgePro and MaxThink's

An Expert System Approach to the Evaluation of Hypertext Engineering : An Experiment with KnowledgePro and MaxThink's

Date: December 1991
Creator: Pak, Min Sun
Description: The purpose of this study is to create the prototype expert system, HEES, and to examine its usability and usefulness in evaluating hypertext software.
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Expertise Revisited: Reflecting on the Intersection of Science and Democracy in the Case of Fracking

Expertise Revisited: Reflecting on the Intersection of Science and Democracy in the Case of Fracking

Date: December 2015
Creator: Ahmadi, Mahdi
Description: This dissertation aims to explain the conditions under which expertise can undermine democratic decision making. I argue that the root of the conflict between expertise and democracy lies in what I call insufficiently “representative” expertise – that is forms of scientific research that are not relevant to the policy questions at hand and that fail to make visible their hidden values dimensions. I claim that the scholarly literature on the problem of expertise fails to recognize and address the issue correctly, because it does not open the black box of scientific methodologies. I maintain that only by making sense of the methodological choices of experts in the context of policy making can we determine the relevance of research and reveal the hidden socio-political values and consequences. Using the case of natural gas fracking, I demonstrate how expert contributions – even though epistemically sound – can muddle democratic policy processes. I present four case studies from controversies about fracking to show how to contextualize scientific methodologies in the pertinent political process. I argue that the common problem across all case studies is the failure of expertise to sufficiently represent stakeholders’ problems and concerns. In this context, “representation” has three criteria: (1) ...
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Expertness and Similarity as Factors of Influence in the Preferences of Deaf College Students for Therapists

Expertness and Similarity as Factors of Influence in the Preferences of Deaf College Students for Therapists

Date: August 1982
Creator: Thigpen, Sally Elizabeth
Description: None
Contributing Partner: UNT Libraries
Explaining Buyer Opportunism in Business-to-Business Relationships

Explaining Buyer Opportunism in Business-to-Business Relationships

Date: May 2007
Creator: Hawkins, Timothy Glenn
Description: The interaction among firms in the supply chain is necessary for business process execution and relationship success. One phenomenon of great significance to buyer-supplier relationships is opportunism. Opportunism is defined as behavior that is self-interest seeking with guile. It is manifested in behaviors such as stealing, cheating, dishonesty, and withholding information. Opportunism negatively impacts relational exchange tenets such as trust, commitment, cooperation, and satisfaction. Furthermore, perceptions of opportunism negatively affect firm performance. In lieu of the known negative effects of opportunistic behavior on buyer-supplier relationships, why do agents continue to engage in opportunistic tactics with their exchange partners? A comprehensive examination is necessary in order to understand why sourcing professionals engage in acts of opportunism. Understanding why opportunism occurs will reveal how to deter it, and this remains a gap in the literature. Based on theories in economics, marketing channels, supply chain management, decision science, and psychology, a comprehensive model tested a set of factors hypothesized to drive the use of opportunistic tactics. Factors include buyer-supplier relationship-specific factors, environmental factors, individual personality-related factors, and situational factors. Data was collected via internet survey of sourcing professionals from private industry and government agencies. Common to many studies of ethics, respondents made choices ...
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Explaining Economic Development Strategies Using Product Differentiation Theory: a Reconceptualization of Competition Among City Governments

Explaining Economic Development Strategies Using Product Differentiation Theory: a Reconceptualization of Competition Among City Governments

Access: Use of this item is restricted to the UNT Community.
Date: May 2015
Creator: Overton, Michael R
Description: Local governments do not operate in a vacuum. Instead, they are part of a complex “polycentric” system of governments where politically autonomous and self-ruled cities compete with one another over taxable wealth. Missing from the scholarship on metropolitan governance is an understanding of the factors driving competition among local governments. The purpose of this dissertation is to fill this gap by examining how interjurisdictional competition over economic development impacts a city’s choice of strategies for attracting business and residential investment and how those strategies affect revenue collection. First, this dissertation examines whether cities, knowing the economic development strategies of their neighboring cities, pursue similar types of businesses? Or do cities strategically target different types of businesses as a way to avoid the negative consequences of competition? Second, this dissertation explores what impact the decision to pursue similar or dissimilar businesses has on the revenue collection of local governments. Using spatial data analysis to analyze a sample of 2,299 cities, this dissertation finds general support for both theoretical frameworks presented. Overall, the findings from both analyses provide unique insights into metropolitan governance and interjurisdictional competition.
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