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Development Of A Resistivity Method To Detect Underground Mined Openings., Fazlollah Ziaie
Development Of A Resistivity Method To Detect Underground Mined Openings., Fazlollah Ziaie
Graduate Theses, Dissertations, and Problem Reports (ETD)
In this study, a new resistivity method has been developed and tested in three phases; simulated model, similitude model, and field survey. This new resistivity method is a combination of the Bristow arrangement and line electrode method. Three line electrodes are chosen so that the sinkhole electrode is emplaced at far distance from the other two electrodes. Any of the two electrodes and the sinkhole electrode is activated and several resistivity profiles perpendicular to the line electrode are prepared for different electrodes activation. Subsurface cavities cause resistivity anomaly. These anomalies are interpreted and are used to estimate the depths and …
Modeling The Supply Response Of Energy Resources: The Case Of Non-Associated Natural Gas In West Virginia., Omowunmi Odemyi Iledare
Modeling The Supply Response Of Energy Resources: The Case Of Non-Associated Natural Gas In West Virginia., Omowunmi Odemyi Iledare
Graduate Theses, Dissertations, and Problem Reports (ETD)
In this study, we have attempted to conduct an economic and policy analysis of the West Virginia natural gas producing industry. The research concentrated on industry activities, objectives and outcomes in the post-NGPA era. The primary goal was to determine the role of economic and market conditions on natural gas supply. First, the structure, conduct and performance of the West Virginia gas producing industry were examined with respect to key features of market structure--concentration, vertical and horizontal integration and barriers to entry. Second, a West Virginia gas supply (WVGAS) model based on the assumption of a price-taker industry was constructed. …
Student Demographic And Performance Variables Related To Performance On The Pre-Professional Skills Mathematics Test., Sally Hardwick Digman
Student Demographic And Performance Variables Related To Performance On The Pre-Professional Skills Mathematics Test., Sally Hardwick Digman
Graduate Theses, Dissertations, and Problem Reports (ETD)
The consequences of failure on the PPST Mathematics Test can be devastating for individuals in states requiring a passing score for teacher certification. This concern prompted the researcher to investigate the variables related to performance on the PPST Mathematics Test. The dependent measures were PPST Mathematics Test Raw Scores and Pass/Fail Scores. The demographic variables included Age, Sex, State, High School Mathematics Coursework, College Rank, and Teaching Area. The performance variables included High School GPA, ACT Mathematics Test, Nelson-Denny Reading scores, WVU Mathematics Department Computation and Word Problem scores, and Watson-Glaser Critical Thinking Appraisal scores. Subjects were 164 teacher education …
Rapid Pyrolysis Of Eastern And Western Oil Shales In An Entrained Reactor., Guo-Qing Zhang
Rapid Pyrolysis Of Eastern And Western Oil Shales In An Entrained Reactor., Guo-Qing Zhang
Graduate Theses, Dissertations, and Problem Reports (ETD)
An entrained reactor system (LFER) has been used to study the rapid pyrolysis kinetics for both eastern (New Albany) and western (Colorado) oil shales. Under the condition of high heating rate, a fundamental understanding of the processes influencing oil production and product quality/composition was obtained. Flow visualization and temperature characterization in the LFER were conducted to provide a critical laminar flow and isothermal reaction zone. Calibration curves depicting the flow regimes confirmed that the existing inlet and reactor design can be operated without particle dispersion caused by turbulence. A thermocouple tree was successfully utilized to identify the conditions necessary to …
Relationships Between Supervisory Safety Contributions And Productivity Accomplishment Among Limestone Quarries., J Owen Weber
Relationships Between Supervisory Safety Contributions And Productivity Accomplishment Among Limestone Quarries., J Owen Weber
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study determined the relationship between how employees perceived their supervisors relative to their safety contributions and productivity as measured in limestone tons per man hour. This study was undertaken for the purposes of providing to enterprise safety function manager's research based data which would be useful in ascertaining the safety contributions of their front line supervisors as well as discovering those items beneficial to focused supervisory training. The investigator constructed a survey instrument consisting of a Likert scale evaluation of fifty-seven supervisory safety duties and responsibilities. These statements were the result of a jury of experts revalidation of the …
The Relationship Between School Principals' Self-Perceived Brain Hemispheric Processing Modes And Their Self-Perceived Leadership Styles., Barbara Mcswain Kean
The Relationship Between School Principals' Self-Perceived Brain Hemispheric Processing Modes And Their Self-Perceived Leadership Styles., Barbara Mcswain Kean
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study was designed to examine the relationship between the self-perceived preferred brain hemispheric processing of West Virginia public school principals and their self-perceived leadership styles. Seventy-five respondents completed the Herrmann Brain Dominance Profile, the Leader Behavior Description Questionnaire, and a demographics sheet. Data were analyzed using the General Linear Model of the Statistical Analysis Systems (SAS). Chi Square analyses at the 0.05 alpha level were used to test two directional hypotheses that guided this study. Both hypotheses were confirmed. Public school principals in West Virginia who perceived themselves as preferring mental processes that are predominantly left brain hemispheric perceived …
An Integrated Computer Model For Predicting Surface Subsidence Due To Underground Coal Mining: "Cispm"., Yi Luo
Graduate Theses, Dissertations, and Problem Reports (ETD)
This dissertation is a part of the results of a research effort. The objective of the research was to develop a reliable, comprehensive and easy-to-use computer model for predicting surface movement and deformation induced by underground coal mining. The subsidence prediction model developed is capable of (1) predicting the final subsidence on a flat or moderate surface; (2) predicting the dynamic subsidence on a flat or moderate surface for an operating longwall panel; (3) recommending subsidence parameters based on the geological and panel layout information for those new coal mines; (4) deducing the subsidence parameters from the subsidence data collected …
A Study Of Management Competency As Determined By Athletic Directors In Pennsylvania Public High Schools: A Probability Sampling Approach., Michael P. Risha
A Study Of Management Competency As Determined By Athletic Directors In Pennsylvania Public High Schools: A Probability Sampling Approach., Michael P. Risha
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purposes of the present investigation were to (1) analyze and compare the views of selected management competencies held by athletic directors of public high schools in Pennsylvania and (2) develop useful descriptive statistics from the demographic data to assess athletic director response, profile and scope differences; and program/school differences. A stratified random sample n of 292 (one half the total number of public high schools in the state) was selected based on school size. Two hundred and three completed sampling packages were returned from the total mailout sample (70% response rate). Two questionnaires were included in each sampling package: …
Experimental Analysis Of Laterally-Confined Coal Block Under Impact Indentation., Seungjae Jung
Experimental Analysis Of Laterally-Confined Coal Block Under Impact Indentation., Seungjae Jung
Graduate Theses, Dissertations, and Problem Reports (ETD)
A fundamental study of impact indentation is presented for the dynamic penetration of a conical bit into coal block. Blocks of coal with approximate dimensions of 10 x 10 x 6 inches were laterally confined to predetermined equivalent in-situ stresses and then subjected to an impact indentation by dropping a coal cutting bit with a known weight from a known height. Tests were done with five bits of different geometry. The effect of material anisotropy on fracture formation was studied by testing coal specimens in face/butt cleat directions. General relationships between applied energy, bit geometry and damage zones on crater …
Citation Analysis And Emerging Technologies: Foundational Technical Developments In Optical Disk Technology., Thomas Tunnell Wrenn
Citation Analysis And Emerging Technologies: Foundational Technical Developments In Optical Disk Technology., Thomas Tunnell Wrenn
Graduate Theses, Dissertations, and Problem Reports (ETD)
One reason a given technology emerges is that the technical means of the technology are improved--made more efficient, faster, more reliable. This causes changes in the "socio-technical interface" between the technical means and the organization in which it is applied, and it becomes practical to use the improved technical means in new applications and additional organizations. Technical developments that decisively affect the technical workability and the economic usefulness of a product or process, which permit rapid changes in a technology and its rate of emergence, are termed foundational technical developments (FTDs). We often want to be able to identify which …
Instructional Design And Interactive Videodisc In Cai., Robert Franklin Perkins
Instructional Design And Interactive Videodisc In Cai., Robert Franklin Perkins
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study uses the Product Development Cycle developed by W. James Popham and Eva L. Baker as a systems approach to Computer-Aided-Instruction development. This process establishes seven stages (Formulation, Item Specification, Item Tryout, Product Development, Product Tryout, Product Revision, and Operations Analysis) and rules that are to be followed at each stage. Formative and summative evaluation are incorporated to improve the product's development. Instructional design is integrated into this process by using Component Display Theory developed by M. David Merrill. Merrill uses a Performance-Content matrix to develop learner objectives and items to test performance. Presentation Forms (Primary and Secondary) are …
A Study Of Human Performance In The Event Of An Unexpected Robot Motion., Yves Beauchamp
A Study Of Human Performance In The Event Of An Unexpected Robot Motion., Yves Beauchamp
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study evaluates factors that could affect human performance in the event of an unexpected robot motion. The study evaluated the following factors associated with a robot work station: illumination level, noise level, the luminance contrast between the robot and its background, the amount of attention required by a task being performed while monitoring the movement of the robot, the motion speed of the robot, and finally the field where unexpected motions were initiated. The dependent variable measured was the distance the robot moved before the subject detected and responded to the unexpected motion. In a main experiment, nine subjects …
Characterization Of Coal Breakage By Continuous Miners., Nagendra Peesary Reddy
Characterization Of Coal Breakage By Continuous Miners., Nagendra Peesary Reddy
Graduate Theses, Dissertations, and Problem Reports (ETD)
The study in this dissertation attempts to alleviate the problem of inefficient cutting and respirable dust production by continuous miners. It involves identification of the important parameters that affect coal fragmentation, design of an Automated Rotary Coal Cutting Simulator (ARCCS) and study of the effects of these parameters on coal fragmentation. Two sets of experiments were conducted, first, multiple bit experiments to establish the experimental procedures and study the microscopic fracture surface and second, single bit experiments to investigate the significance of the important parameters based on a statistical design called the two way factorial design. From the multiple bit …
Structural And Multivariate Time-Series Models: Comparative Application In Commodity Markets., Masoud Moallem
Structural And Multivariate Time-Series Models: Comparative Application In Commodity Markets., Masoud Moallem
Graduate Theses, Dissertations, and Problem Reports (ETD)
My dissertation concentrates on comparing the forecasting performance of three types of multivariate models: a structural model, a transfer function model in time domain, and two vector autoregressive models (VAR). These models are specified and estimated to reflect the market behavior of important variables in the U.S. copper market. The forecasting performance of these models is compared in the context of a commodity modeling exercise. The purpose is two fold, to assess the relative forecasting performance of the models, and to determine the role and the necessity of a priori information in forecasting economic time series. Only the standard commodity …
Neutrino Mass Oscillation., Yadollah Yadi Aliakbar
Neutrino Mass Oscillation., Yadollah Yadi Aliakbar
Graduate Theses, Dissertations, and Problem Reports (ETD)
Based on the general calculation of the tetrad formalism in a 4-dimensional space-time, we have shown that the deviation from the Riemannian geometry to the non-Riemannian geometry depends on the torsion case. In the absence of the torsion case, one is naturally confined to the Riemannian geometry, while for the nonzero torsion case, our formalism uses the Einstein-Cartan geometry which is a basis in the spinor space and is incorporated with the gauge transformation for the zero rest mass Dirac field. After constructing the Lagrangian density of the Dirac particle in this spinor space, deriving the corresponding Heisenberg-Pauli type field …
The Effects Of Willingness To Communicate On Student Learning., Miuchi Betty Chan
The Effects Of Willingness To Communicate On Student Learning., Miuchi Betty Chan
Graduate Theses, Dissertations, and Problem Reports (ETD)
This research investigated the effects of Willingness to Communicate on student learning. It was hypothesized that (i) students who were generally more willing to communicate would participate more in class than students who were generally unwilling to communicate and that (ii) Willingness to Communicate would be positively associated with both cognitive and affective learning. A total of 253 students enrolled in 12 different undergraduate courses participated in the study. Students were asked to complete the WTC scale in the beginning of the semester. Of the 253 students, 62 were identified as high willing-to-communicate subjects and 45 were identified as low …
The Relationship Between Leadership Styles Of High School Principals And School Climate As Perceived By Teachers., Sandra Shrewsbury Bailey
The Relationship Between Leadership Styles Of High School Principals And School Climate As Perceived By Teachers., Sandra Shrewsbury Bailey
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study was designed to examine the relationship between the leadership styles of principals and the climate of high schools in West Virginia as perceived by teachers. From a population of 4,966 high school teachers, a random sample of 384 participants was selected. Each participant was mailed a survey packet containing a cover letter and two questionnaires, the LEAD-Other and the CFK Ltd. School Climate Profile. The total return was 248 or 64.58 percent. The data were analyzed using the General Linear Model of the Statistical Analysis Systems (SAS). Analysis of the data resulted in these major findings: High school …
Studies Of Nonlinear Dynamics In Chemical Systems., John Steven Reckley
Studies Of Nonlinear Dynamics In Chemical Systems., John Steven Reckley
Graduate Theses, Dissertations, and Problem Reports (ETD)
This work reports on three projects undertaken with the aim of learning more about complex behavior such as multiple steady states in a CSTR and traveling waves and spatial structures in unstirred solutions. Bistability in the permanganate-oxalate system was studied spectrophotometrically and computationally using a CSTR in a UV-Vis spectrophotometer. Absorbance of the solution was monitored as a function of flow rate. The concentrations of several manganese containing species in each of the steady states at a specific flow rate were determined using multi-component analysis. A four-variable empirical rate law model and computational results were presented. An experimental investigation of …
An Economic Investigation Of Foreign Labor Composition In Saudi Arabia's Labor Market., Mubarak Ali Al-Buraik
An Economic Investigation Of Foreign Labor Composition In Saudi Arabia's Labor Market., Mubarak Ali Al-Buraik
Graduate Theses, Dissertations, and Problem Reports (ETD)
The main objective of this research was to develop a theoretical model capable of explaining the changes in foreign labor and its ratios in Saudi labor market, using annual time-series data spanning the period 1963-1985. In a reduced form, the model has been derived from the theoretical underpinnings of the supply and demand for labor in Saudi Arabia's labor market. In this model, the explanatory (independent) variables influencing foreign labor and its ratios have been identified and thoroughly explained; they consisted of both "pull" factors and "push" factors. The model was then used as a guiding tool or framework for …
Creative Problem-Solving And Its Effect On Eighth-Grade Students., Frances Elizabeth Bush
Creative Problem-Solving And Its Effect On Eighth-Grade Students., Frances Elizabeth Bush
Graduate Theses, Dissertations, and Problem Reports (ETD)
The primary objective of this study was to determine the impact of Creative Problem-solving (CPS) training on students' creative thinking and finished art products. Experimental and Control groups were matched by age (13-14) and grade (eighth). The creativity training program used in the study was a total of sixteen sessions of 55 minutes each. The vehicle for the study was CPS which was conducted by the writer who encouraged fluency, flexibility, originality, and elaboration. Control group received no special training during their traditional art class. Data were analyzed using t-test and correlations. All subjects constructed art products at the end …
A Study Of Achievement, Anxiety, And Attitude Toward Mathematics In College Algebra Students Using Small-Group Interaction Methods., Virginia Rider Valentino
A Study Of Achievement, Anxiety, And Attitude Toward Mathematics In College Algebra Students Using Small-Group Interaction Methods., Virginia Rider Valentino
Graduate Theses, Dissertations, and Problem Reports (ETD)
The study compared the effects of two instructional techniques (small group instruction and the lecture/discussion method) on the levels of academic achievement, math anxiety, and attitude toward mathematics in two sections of college algebra. The study also examined the effects on males and females and the number of students successfully completing the course in each group. The group study method used to instruct the experimental section was based on Robert E. Slavin's "Cooperative Learning" Model and was implemented by adapting Slavin's Student Teams Achievement Division technique for use in the college classroom. The traditional lecture/discussion method was used to instruct …
Blast Round Design And Casting In Surface Coal Mining., Jonq-Keh Lee
Blast Round Design And Casting In Surface Coal Mining., Jonq-Keh Lee
Graduate Theses, Dissertations, and Problem Reports (ETD)
Casting design for bench blasting in surface coal mines is a new focus and a fairly recent success. This study aims at the development of a model to predict the throw of overburden material based on geological conditions of a bench and charges in blast holes. The model, derived on the basis of blasting theories and dynamics of the multiple-particle system, explores the mechanisms of casting rocks into pits. Implementing the model with a computer program is a part of the study. The execution of the computer program will result in quantitative data for evaluation of a blast round design. …
The Effects Of Creative Drama Methods On Mathematics Achievement, Attitudes And Creativity., Joy Faini Saab
The Effects Of Creative Drama Methods On Mathematics Achievement, Attitudes And Creativity., Joy Faini Saab
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to examine the effects of Creative Drama methods on sixth-grade Mathematics instruction. Experimental and control differences and gender differences were analyzed using student scores of Mathematics achievement, attitudes toward Mathematics, and creativity. Teachers were trained in the methods of Creative Drama applied to Mathematics at the onset of the experiment. Once the pretests for the three dependent variables were given, the experimental groups received eight weeks of Creative Drama/Mathematics activities during their regular Mathematics classes. The control groups received textbook-oriented Mathematics instruction without any of the Creative Drama methods integrated into their classes. All …
Consequences Of Implementing The New York State Seventh Grade Technology Education Curriculum As Reported By Pilot Teachers., Stanley A. Komacek
Consequences Of Implementing The New York State Seventh Grade Technology Education Curriculum As Reported By Pilot Teachers., Stanley A. Komacek
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study examined the contribution of action steps (steps taken to prepare for and implement a new curriculum) to resulting outcomes (outcomes that resulted from implementation efforts) for pilot teachers of the seventh grade technology education curriculum in New York state. A survey instrument was used to gather teacher-reported data on twenty-three variables. The four dependent variables (resulting outcomes) included: (a) degree of change in program support from school and community, (b) degree of change in teacher job satisfaction, (c) degree of success of implementation of technology education, and (d) amount of student achievement of technology education. Five independent variables …
Acclimatization Of Older Men To Work In Heat., Edward Payson Daugherty
Acclimatization Of Older Men To Work In Heat., Edward Payson Daugherty
Graduate Theses, Dissertations, and Problem Reports (ETD)
There is a paucity of evidence to support the hypothesis that there is no significant difference (NSD) between the rate of acclimatization gain and loss of young and old men as they work in a hot environment. Ten young men (Group 1 (x age 24.8 years)) and 5 older men (Group 2 (x age 64.4 years)) volunteered to complete a 39 day exercise regimen in an environmental chamber. Days 1-4 were the Baseline Phase (BL) (68-72 F{dollar}\\sp\\circ{dollar} dry bulb (DB), relative humidity (RH) 40%). Days 5-18 were the Acclimatization Phase (AC) (DB = 100 F{dollar}\\sp\\circ{dollar}, RH = 40%). Days 19-39 …
Kinetics Of Drug Release From The Polylactic Acid Microcapsules Prepared By A Solvent Partition Method., Nilsuwan Leelarasamee
Kinetics Of Drug Release From The Polylactic Acid Microcapsules Prepared By A Solvent Partition Method., Nilsuwan Leelarasamee
Graduate Theses, Dissertations, and Problem Reports (ETD)
A solvent partition technique of microencapsulation, utilizing an apparatus designed to provide a continuous injection of a drug-polymer preparation into a flowing mineral oil system, has been developed via the preparation of hydrocortisone-polylactic acid microcapsules. Using this method, microcapsules of controlled particle size distribution and drug loading were prepared with good reproducibility. Dissolution studies further showed that microcapsules having the same drug loading and particle size distribution exhibited the same rate of release. The drug release profiles, obtained in pH 7.4 phosphate buffer at 37 C, showed a biphasic drug release pattern denoting a fast first-stage and a slow second-stage …
Analysis Of Aggregate Net Investment In Appalachian Agriculture., Stephen Nnaemeka Dike
Analysis Of Aggregate Net Investment In Appalachian Agriculture., Stephen Nnaemeka Dike
Graduate Theses, Dissertations, and Problem Reports (ETD)
Research in areas of structural characteristics and investment demand of Appalachian agricultural production technology is sorely lacking despite such problems as slow factor adjustment, low returns on investments and increasing importance of non-farm income. Regional difference in geography, resource endowment and economic environment reflect differences in investment decision needs that dissipate in national aggregate studies. Ability of Appalachian farmers to benefit from national programs based on these national studies depends on the degree of homogeneity of the structural characteristics of Appalachian production technology relative to the U.S. This remains an empirical question. Based on dynamic optimization, and incorporating the adjustment …
Coal Transportation: A Comparative Spatial Analysis Between Unit Train And Slurry Pipeline (West Virginia)., Masood Soltanmohammadi-Sarab
Coal Transportation: A Comparative Spatial Analysis Between Unit Train And Slurry Pipeline (West Virginia)., Masood Soltanmohammadi-Sarab
Graduate Theses, Dissertations, and Problem Reports (ETD)
After the 1973 Arab oil embargo and a drastic price rise in crude oil, the demand for coal and, subsequently, the price of coal rose to a new high, thus encouraging further production of coal. The increase in the production occurred in most of the coal fields of our nation except those in some specific areas, such as West Virginia. Preliminary studies indicate that the high transportation cost of coal contributes to this slacking coal production pattern. Three related objectives are studied in this dissertation: (a) Finding the least cost mode of coal transportation; (b) Determining the new pattern of …
An Integrated Production And Cost Management System For Underground Coal Mines., Robert Larry Grayson
An Integrated Production And Cost Management System For Underground Coal Mines., Robert Larry Grayson
Graduate Theses, Dissertations, and Problem Reports (ETD)
The current coal market demands better management of resources and minimum-cost performance from underground mines. It is a matter of survival in which only well-managed operations will capture a share of the market. This situation forces mine managers to apply management science techniques in scheduling and controlling operations. Tools for operations research are generally lacking at mine sites. Techniques which are used have typically been applied in isolation and in mine design. An integrated production and cost management system, which spans planning, scheduling, and monitoring activities, is demanded. Techniques employed must be responsive to changing environmental and economic conditions. An …
A Theoretical And Experimental Investigation Of Coke Gasification In A Batch Reactor, Esmail R. Monazam
A Theoretical And Experimental Investigation Of Coke Gasification In A Batch Reactor, Esmail R. Monazam
Graduate Theses, Dissertations, and Problem Reports (ETD)
A computer model has been developed to simulate the char-gasification process occurring in the gasification component of a crossflow coal gasifier. This process corresponds to the batch gasification process in a combustion pot. Temperature and concentration profiles along the gasifier were obtained by solving the material and energy balances. In order to obtain the data necessary for evaluating and improving the computer model, an experimental system was developed to obtain data for the char-gasification process in the combustion pot. The results show that the gasification rate strongly depends on the air flow rate and that the reactivity of the char …