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1

Zell, Stacy Kay. "Characterizing the Conversation: A Historical Re-view of Maria Montessori's Visits to the United States 1913-1918." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/30319.

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This historical re-view of the events and interactions of Maria Montessori's visit to the United States between the years 1913 and 1918 begins by examining Montessori's personal history, with an emphasis on her educational background leading up to her becoming the first female physician in Italy. After discussing her scientific background briefly, the document specifically addresses several of Montessori's educational concepts. Next, this study examines specific nuances of organization, power and intent found in the educational system of the United States at the time of her visits. Particular emphasis is placed on the implications of industrialization, increasing immigration and the response of the educational establishment to these issues. Interactions and events from her visits in the United States follow. Montessori's influences on and experiences with prominent figures in the U.S. at that time are accentuated through the events that highlight her travels. After detailing each visit in the historical context in which it occurred, the piece continues with the author's discussion of how the dissertation applies to teaching history in the foundations. The piece concludes with conceptual suggestions of ways to increase diverse social awareness and encourage community-based responses of pre-service and in-service public school educators.<br>Ph. D.
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2

Zhai, Jing. "Application of insecticides to control the German cockroach, Blattella germania (L.)." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-06102009-063046/.

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3

Zhang, Minhui. "Investigation of structure and permeability of surfaces modified with self-assembled monolayers." Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-08222008-063703/.

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4

Zhang, Rong Christine. "Excavation in Toronto." Thesis, Virginia Polytechnic Institute and State University, 1996. http://hdl.handle.net/10919/53431.

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This thesis is about silence; about emptiness; about absence. "Should we be surprised by the fact that architectural form can be found in the plan of the city? Yes, if one considers the fact that there is no architectural intervention in the design of the plan. No, if one considers architecture as not just the practice of a specific form of "writing", but primarily as an art of "reading." It is the "reading subject," the principle that generates the architecture of the city by displacing its plan to 'another' realm. The realm of the urban text." M. Gandelsonas "The Unconscious of the City"<br>Master of Architecture
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5

Zeller, Stephanie. "The room of the courtyard." Thesis, Virginia Polytechnic Institute and State University, 1991. http://hdl.handle.net/10919/52113.

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Define a courtyard. Buildings form the Walls of the Room of the courtyard. Define its center, a pool of water. Define the axis, controlled by the center, leading to it, flowing from… the entry, the Door to the courtyard, the microcosm of the whole, the source of the water.<br>Master of Architecture
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6

Zeakes, Jason S. "Extrinsic Fabry-Perot Interferometric hydrogen gas sensor." Thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-06162009-063525/.

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7

Regan, Cynthia Lee. "A concurrent engineering framework for apparel manufacture." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-07132007-143155/.

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8

Reynolds-Johnson, Yvonne O. "A case study of a primary school using the action research process to study parental involvement practices." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-10052007-143349/.

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9

Massey, Albert Johnnie. "A typology of community college students and the development of profiles of associated student types." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-08032007-102248/.

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10

Simington, Paulette Rodgers. "One school's process for problem solving." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-10042006-143916/.

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11

Yang, Bing. "Action at a distance for specific repression of the glpD and glpTQ genes, and organization of the glpEGR genes of Escherichia coli K-12." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-10042006-143914/.

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12

Samani, Tresia B. "Distinguishing characteristics of college-level course work : faculty perceptions /." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-10052007-143356/.

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13

Sughrue, Jennifer. "A trend analysis of Ohio's state funding for public and nonpublic school students." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-08062007-094419/.

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14

Wingfield, Nancy Poe. "Midlife development and disability onset in a family context : a qualitative integration /." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-10032007-172200/.

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15

Millhouse, Louis M. "The Supreme Court, religion, and the intent of the Framers : an analysis of the sitting Justices' Establishment Clause philosophies /." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-08032007-102249/.

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16

McCrumb, Dawn Karyl. "Components and issues of an exemplary middle level physical education program : expert opinion /." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-10052007-143719/.

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17

Michael, Sean Edward. "Behavioral scripts of urban park offenders : a rational choice perspective on influences of the park setting /." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-11082006-133637/.

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18

Rogers, Moira R. "The legitimation of science in the early German enlightenment Leipzig, ca. 1687-1750." Diss., Virginia Polytechnic Institute and State University, 1997. http://hdl.handle.net/10919/49938.

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The legitimation of science as the most authoritative form of human knowledge is the result of complex literary and socio-political processes. In the course of the eighteenth century, lay people came to see science as an authority beyond criticism, whose norms are value-neutral, self-evident and absolute. The cultural status that science acquired continued for centuries and, even though it has been challenged in our times, it still is one of the main providers of meaning for social life. It is true that contemporary scholarship has taken important steps to deconstruct such views by pointing out the social and political roots of the modem ideal of certainty and decontextualization. However, questions still remain asas to how this popular image of science was established to begin with. A common view, suggested by the traditional emphasis on scientific practitioners and intellectuals, is that scientific ideas diffused to lay publics and informed them of the newly discovered truths. People then responded to the challenge by adjusting their lives according to the logical implications of science. However, more careful analysis of the sources indicates that the appropriation of science by these audiences occurred in a much more complex and interesting way. A very common opinion at that early time was that "It is from Saxony that the light of science has spread through Germany and other countries." Leipzig was described as "the cradle of all arts and sciences," "the biggest journal-factory," "the Mecca of the European book- /overs," "the German Athens" (Diderot). This study explores the various forces that converged in the excitement and satisfaction of a public taste for and curiosity about scientific matters. Although it is bound to the Saxon area with special emphasis on Leipzig as a major center of Enlightenment, the results of this study are of more general significance for Mid- and Northern Germany. It provides an illustration of the ways in which supra-regional and international networks centering in the Saxon area operated. Local developments, even when strictly bound to local conditions, signaled the general directions of the Enlightenment movement in Germany as a whole. The processes that allowed science to transcend the boundaries of academies and universities were not merely "transmission" of ideas to essentially passive and receptive audiences. Complex dynamics contributed to the promotion of broader Enlightenment interests in German culture. In spite of universalist claims, philosophers and popularizers did not grant women, as the emblem of the uneducated, nor the people in general, access to the sanctuary of science. Rather, the popularization of science functioned as an effective means for preaching the Enlightenment gospel to an educated laity. It emerges from this study not as a way of reaching out to other underprivileged social groups, but as an effective means for producing unity between elite groups in German society. Popular science works are fragments in the composition of a new human and social ideal, in which science plays a crucial part. They are key building blocks in the construction of a learned worldview shaped by Enlightenment ideals, tensions, and contradictions.<br>Ph. D.<br>incomplete_metadata
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19

Vasudevan, Lakshmi. "Anatomical Developments and the Role of Carbohydrate or Mineral Nutrient Deficiency in Bud Necrosis of 'Riesling' grapevines (Vitis Vinifera L.)." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/30652.

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Bud necrosis (BN) is observed as an abortion and death of one or more primordia of the developing compound winter bud. Anatomical developments during the onset of BN in 'Riesling' and 'Chardonnay' grapevines were characterized. Examination of ultrathin (1micro m) sections of 'Riesling' buds under a light microscope revealed a zone of compressed cells immediately beneath the primary bud axis within 60 days after budbreak. Cell rupture occurred in that zone within 90 days after budbreak. Scanning electron microscopy revealed a similar pattern of tissue destruction. Based on the hypothesis that BN was caused by essential substrate deficiency, localized carbohydrate deprivaton was attempted by shading of 'Riesling' grapevines and by shoot tip removal. In one experiment, 92% shade was applied for a three-week period at 20, 40, or 60 days after budbreak in one vineyard and at 40 days after budbreak in another vineyard. In another experiment, 92% shade was applied for a 40-day period at 25 or 65 days after budbreak. Shade reduced photosynthetic photon flux (PPF) in the fruit zone of canopies to <2% of ambient PPF. The first experiment did not increase BN. However, the second experiment increased BN in the distal nodes of the shaded vines compared to the control vines. Shoot vigor, measured as shoot diameter and internode length at season1s end, was positively correlated with BN in shaded as well as unshaded vines. The frequency of necrotic buds was greater at nodes 5 through 16 than at nodes 1 to 4 in both shaded and unshaded vines. Levels of total nonstructural carbohydrates (TNC) measured spectrophotometrically, were not significantly affected by shade treatment. Levels of sucrose, glucose, fructose, and starch in bud, leaf, and stem tissues determined by HPLC, were lower in shaded vines at the point of shade removal than in unshaded vines. Therefore, although three-week periods of shade did not affect BN in 'Riesling', 40-day periods of shade increased BN in distal nodes. Shoot tip removal increased BN at nodes distal to node 12. Bud tissues of shoot-tipped vines had lower levels of sucrose, glucose, fructose, and starch than did the control vines. Carbohydrate analysis of bud, leaf, and stem tissues indicated that 'Riesling' vines (BN-prone) had lower levels of sucrose compared to 'Chardonnay' vines (BN-insensitive). Role of mineral nutrient deprivation was examined in 'Riesling' and 'Chardonnay' buds and the results indicated that BN is unlikely caused by essential nutrient deficiency. 'Chardonnay', the BN-insensitive cultivar had greater levels of starch deposits at 50, 60, 70, and 80 days after budbreak than did the BN-susceptible cultivars, 'Riesling1', Syrah', and 'Viognier'. Starch deposits in grape buds were negatively correlated with BN incidence. From these experiments it can be concluded that a negative correlation between carbohydrate levels of grape buds and BN incidence exists.<br>Ph. D.
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20

Jacobson, Stephanie Hildegarde Zadro. "A Comparison of Early Childhood Assessments and A Standardized Measure For Program Evaluation." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/30302.

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Traditionally, standardized achievement tests have been used to monitor program effectiveness. Recently, however, educators have questioned the appropriateness of standardized tests for this purpose, especially for programs designed for young children. Early childhood advocates suggest using developmentally appropriate assessments instead of standardized achievement tests for making classroom-level decisions about children and for program evaluation. Proponents, however, have not fully identified the psychometric properties of the assessments, certainly not for the purposes of program evaluation. Although developmentally appropriate assessments have been implemented in a number of classrooms across the country, few studies have verified their ability to discriminate among developmental levels. In addition, even fewer studies have addressed their use for evaluating program effectiveness. Using the records of 293 students from the local site of a National Transition Project and both classical test theory (CTT) and item response theory (IRT) procedures, three assessment instruments and a standardized test were examined. It was shown that the Concepts about Print portion of the Early Childhood Assessment Package, the Language Arts component of the kindergarten developmental progress reports, and the first grade Early Literacy Scale tasks are, in fact, developmental assessments. Additionally, IRT procedures located students on the developmental continuum underlying the assessments. Although classical ANCOVAs were unable to identify Treatment or Head Start program effects beyond the kindergarten year, IRT procedures showed that the expected proportion of students at the highest latent ability levels tended to be greater for students in Demonstration schools and Head Start graduates than their counterparts throughout kindergarten and first grade. A standardized reading achievement measure administered to the students in second grade, was unable to differentiate program effects through either classical or IRT procedures. This suggests that the concepts underlying standardized tests differ from those underlying developmentally appropriate assessments. As a result, the key issue to be resolved is which type of measure is more valid, that is, more appropriate, for evaluating early childhood programs.<br>Ph. D.
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21

Temple, Alan J. "The effects of coal mining on sedimentation and fish assemblages in the Powell River, Virginia." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/38769.

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22

Yeatts, George Dewey. "Privatization of public university housing: a comparative cost analysis of alternative models for student housing in the Commonwealth of Kentucky." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/40334.

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The conceptual and methodological issues of public university student housing were examined. Specific issues dealt with providing affordable student housing. The study performed a comparative cost analysis of the various student housing models currently available to public Kentucky universities. Cost data were analyzed for the development and comparison of the baseline study project and three student housing models. Project development costs were analyzed to determine the development costs per square foot of student housing, the construction costs per square foot, the cost per resident or bed, and the cost to develop each bedroom or unit. The study compared the affordability of each project by analyzing the net gains (or losses) of each model. Proforma analysis of cash flows were developed for each model and the baseline for comparison purposes. Such analysis considered typical revenues based on average rental rates and current building operating expenses. Debt coverage ratios for each project were calculated and compared to financial industry standards. Currently many colleges and universities are privatizing their studen~ housing. Although the majority of the educational institutions appear to be very successful with their efforts, institutions are not fully aware of the benefits, pitfalls, or processes involved in the privatization of student housing. There are a number of issues that must be addressed prior to obligating a public educational institution to a long-term leasing agreement with a private firm. This research discussed the financial issues pertaining to the development costs of various student housing models. From this study, conclusions regarding the most cost effective development of student housing facilities were stated. The examination provided for the identification of issues necessary to assess the financial performance of the various student housing models. The discussion of such issues may contribute. to more effective student housing decisions by higher education administrators. Implementation of the most cost effective model may provide a means for economically meeting their university's student housing needs.<br>Ed. D.
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23

VanLare, Ian Judd. "Isolation and characterization of the (NAD(P)-independent)polyol dehydrogenase from the plasma-membranes of gluconobacter oxydans ATCC strain 621." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/40249.

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24

Tucker, James R. "A comparison of seleceted indicators of educational outcomes in small and large middle schools in Virginia." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/40332.

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25

Shapiro, Jon M. "The role of cultural sensitivity and trust in relational marketing: an analysis of buyer/seller relationships in the Asian Pacific Rim." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/40241.

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26

Slank, Kristine Lynn. "Effects of emotional state and food novelty on preschool children's acceptance of food." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/40333.

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Humans and other animals typically consume less of novel foods than of familiar ones, a phenomenon termed ingestional neophobia. Young children display especially high levels of neophobia, spitting out new foods but accepting those same foods after familiarization. Rejection of novel foods presumably reflects the aversiveness of the food's novel sensory cues, which thereby occasions withdrawal. Familiar foods typically evoke acceptance, suggesting that familiar foods are not categorically aversive. According to a biphasic model of emotion, negative affective behaviors (e.g., withdrawal) are enhanced during negative emotional states and inhibited during positive states. Positive affective behaviors (e.g., approach, consumption) are enhanced during positive emotional states but inhibited during negative states. If neophobia (withdrawal) and food acceptance (approach) reflect negative and positive affective behaviors respectively, according to the biphasic model, emotional state at the moment of food presentation should mediate the display of neophobia and food acceptance. To induce mood, preschool children were asked to think of things that make them happy (positive), sad (negative) or asked to count (neutral). Following mood-induction (MI), children received a familiar- or novel-appearing food. Acceptance was assessed as latency to touch the food, latency to Bite 1, latency to Bites 2-5, amount eaten, rate of eating, and degree of food contact. Acceptance was expected to be greater for the familiar- than for the novel-appearing food, and greater in the positive MI than in the neutral MI than in the negative MI condition. An interaction between food appearance and MI condition was expected. Results indicated that children who received a novel-appearing food ate reliably less and reliably slower than children who received the same food in its familiar appearance. There were no effects of MI condition. However manipulation checks indicated that MI procedures were ineffective. Participants were therefore reassigned to mood groups based on ratings of expressed affect. Analysis of reassigned groups indicated that the negative mood group took significantly longer to touch the food, to Bite 1, and to Bites 2-5 than did neutral and positive groups. The negative mood group ate reliably less than the neutral group, who ate reliably less than the positive group.<br>Ph. D.
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27

Tan, Biao. "Synthesis and characterization of phenylethynyl endcapped polyetherimide oligomers." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/40330.

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28

Purswell, Jerry Paul. "The effects of perturbation frequency, magnitude, and uncertainty during static and dynamic tracking on the estimated level of muscle co-contraction." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/40244.

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29

Rawls, Richard K. "Virginia high school counselors and school law." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/40335.

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30

Nikovits, Jean F. "A study of the perceptions of elementary school principals from one school division regarding the skills and knowledge of computer technology critical to their job performance." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/28657.

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31

Zeis, Jennifer L. "Custom order visualization system." Master's thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-02022010-020214/.

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32

Hobbs, Betty E. "A study of the procedures and their perceived effectiveness in the recruitment of African American teachers in city school divisions in Virginia." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-10052007-143712/.

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33

Hopkins, Carter Byrd Hunter. "Alumnae perceptions of the influence of the undergraduate experience on adult friendship and the overall quality of life." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-10052007-143315/.

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34

Batzel, Donna. "Exploration of session perceptions in the words of clients and therapists." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-10022007-144659/.

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35

Atwater, Barbara J. "A qualitative examination of the career paths of female school superintendents in Virginia." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-10052007-143301/.

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36

Dursa, Anthony. "A study of school board policy and rules and regulations dealing with police involvement in public high schools in the Commonwealth of Virginia." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-10052007-143653/.

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37

Jones, Raymond T. "Prediction of educational technology to be found in the public schools of the year 2000: a Delphi study." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/40331.

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The world is shifting into an unprecedented technological age. Towns such as Blacksburg, Virginia, are now being called "electronic villages" with electronic infrastructure which not only ties together all aspects of the town but also connects the town to the world. Reality becomes "virtual" with information unimpeded by time and distance. This rapid advancement in electronical technology is having an impact on world educational systems. Those planning the future of education have a need to know what directions this new technology might take in order to interface such technologies with the schools. The purpose of this study was to predict which present and emerging electronic technologies would be in significant use in the K-12 schools of the year 2000. The Delphi technique was used to gather predictions from an expert panel of teachers, administrators, electronic media specialists, and those working in the technology industries. The predictions were gathered from winter 1994 to fall 1995 for the year 2000, taking into account the need for a reasonably accurate prediction which could be used for those now engaged in short-term planning and those engaged in generating the appropriate technologies for the schools. The types of present and emerging electronic technologies "to be found in K-12 schools of the year 2000 were solicited in round one of the study. Rounds two and three identified which technologies would indeed be in significant usage. Using a scale of 1 to 4 (1= very unimportant, 2= unimportant, 3=important, 4= very important), a group mean and standard deviation were calculated for each identified technology. Those technologies with a mean score of 3.00 or higher in round three were predicted to be those likely or very likely to be used in the K-12 schools of the year 2000.<br>Ed. D.
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38

Bartley, Ronnie. "The effect of access to test item pools on student achievement and student study habits." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/40468.

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This study investigated the effects of access to a test item pool on student achievement and study habits in an Introduction to Microcomputers class at Southwest Virginia Community College. The class was planned, delivered, and evaluated using Vogler's Curriculum-Pedagogy-Assessment (CPA) model. The study was designed as a quasi-experimental study. Three groups were used in the study: two treatment groups and a control group. A test item pool was furnished as study questions for the two treatment groups defined as unlimited access and just-in-time access groups. A control group did not have access to the study questions. The unlimited access group received all questions on computer disk at the beginning of the course. The questions were not grouped by topic but rather were grouped by question type. The just-in-time access group received a group of questions each week that pertained to the topic being studied for the week.<br>Ed. D.
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39

Lemasters, Linda Kay. "A synthesis of studies pertaining to facilities, student achievement, and student behavior." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-11082006-133636/.

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40

Spivey, Charles L. "Student, parent, and teacher attitudes toward video surveillance monitoring." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-10022007-144809/.

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41

Abrahams, John Aron. "An analysis of the funding patterns and sources of community based organizations who deliver adult basic education." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-10052007-143254/.

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42

Johnson, Henry Vanderbilt. "Rap music : popular perceptions and its affect on the lives of adolescents attending Jackson Middle and Grimsley High Schools of Guilford County, North Carolina /." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-06062008-145038/.

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43

Esterhuizen, Jacob J. B. "Progressive failure of slopes in lined waste impoundments." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-08032007-102247/.

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44

Deang, Jennifer Marie. "A Study of Inhomogeneities and Anisotrophies In Superconductors via Ginzburg-Landau Type models." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/30326.

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Superconductivity continues to be of great theoretical and practical interest and remains a challenging area of scientific inquiry. Most superconductors of practical utility are of type-II, i.e., they allow the penetration of magnetic fields in the form of tubes of flux that are referred to as "vortices." Motion of these vortices due to, e.g., applied currents, induce a loss of perfect conductivity. Knowing how vortices move and arrange themselves in lattice structures, how their movement is suppressed by pinning mechanisms, and how their movement is affected by thermal fluctuations is critical to understanding how to maintain resistanceless current flow. We study a variety of Ginzburg-Landau type models for superconductivity that can account for inhomogeneous and isotropy materials, grain boundaries, and thermal fluctuations. We develop robust, accurate, and efficient numerical codes and apply them to numerous studies of how vortex motions are affected by the various mechanisms mentioned above. We also examine some analytical aspects of type-II superconductors under the influence of thermal fluctuations.<br>Ph. D.
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45

Church, Gregory W. "Macrohabitat factors affecting distribution patterns of freshwater mussels in the Clinch River (Virginia, Tennessee)." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/40246.

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46

Webb, Charlotte. "Networks and professionalization : a history of the Virginia Academy of Science, 1923-1995 /." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-02272007-092418/.

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Thesis (Ph. D.)--Virginia Polytechnic Institute and State University, 1997.<br>Vita. Abstract. "September 3, 1997." Includes bibliographical references (leaves 401-411). Also available via the Internet.
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47

Skinner, Mary Lou. "Revised manual for student activity accounting for Virginia's public schools." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-10052007-143403/.

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48

Bao, Nonggang. "Population biology and ecology and of Periplaneta americana (L.) in the urban environment." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-10022007-144652/.

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49

Drummond, Derek Michael. "A critical examination of identification practices in special education." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-10052007-143646/.

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50

Collins, Susan E. "Priorities of counseling programs and outcomes within the Virginia community college system." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-06062008-151035/.

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