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Pages
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Title
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Factors separating winners and losers in e-business.
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Creator
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O'Leary, Bay, Florida Atlantic University, Korgaonkar, Pradeep
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Abstract/Description
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The rapid growth and integration of the Internet as a communication and commercial medium into our society and economy has changed both in many ways. This dissertation is an exploratory study of factors deemed significant in the context of e-business success or failure. A survey instrument is used in addition to qualitative data was gathered from in-depth interviews. Drawing upon the literature from the area of new business in brick and mortar (B&M) firms, an examination of the factors that...
Show moreThe rapid growth and integration of the Internet as a communication and commercial medium into our society and economy has changed both in many ways. This dissertation is an exploratory study of factors deemed significant in the context of e-business success or failure. A survey instrument is used in addition to qualitative data was gathered from in-depth interviews. Drawing upon the literature from the area of new business in brick and mortar (B&M) firms, an examination of the factors that lead to the success or failure of new brick and mortar businesses are examined in terms of new e business companies. Also examined in this study are the business strategies that an e-commerce site should be addressing to avoid failure factors and the types of e-business models that have been employed and have proven to be successful or destructive to an e-business. In an attempt to understand the marketing and managerial implications for the success or failure of an e-business, seven factors are included in the study which have been selected from a group of factors found to be significant in several studies on the factors leading to the success or failure of small businesses in the brick and mortar world and factors which may be considered relevant to an e-business. These are; management factors, entrepreneur factors, product/service factors, marketing factors, market factors, financial factors, and Web site design and efficiency factors.
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Date Issued
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2003
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PURL
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http://purl.flvc.org/fcla/dt/12060
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Subject Headings
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Electronic Commerce, Internet Marketing, Electronic Commerce--Management, Entrepreneurship
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Format
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Document (PDF)
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Title
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Factors influencing face/core crack propagation in PVC foam core sandwich.
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Creator
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Viana, Gillmer Manuel., Florida Atlantic University, Carlsson, Leif A., College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
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Abstract/Description
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Fracture toughness of a large range of PVC foam cores was determined using the single edge notch bend (SENB) specimen. Debond fracture toughness for sandwich specimens with the same foam cores was characterized using the TSD specimen. Examination of the crack propagation path in specimens with adequate face/core adhesion revealed that the debonding process occurred by crack propagation in the core, near the face/core interface. It was observed that the debond toughness and core toughness are...
Show moreFracture toughness of a large range of PVC foam cores was determined using the single edge notch bend (SENB) specimen. Debond fracture toughness for sandwich specimens with the same foam cores was characterized using the TSD specimen. Examination of the crack propagation path in specimens with adequate face/core adhesion revealed that the debonding process occurred by crack propagation in the core, near the face/core interface. It was observed that the debond toughness and core toughness are of similar magnitude although the debond toughness exceeds the core toughness, especially for the higher density cores. Possible reasons for the elevation of the debond toughness over the core toughness such as plastic zone enlargement, mode mixity, core thickness, and gradient of properties of the core are examined. It was found that the plastic zone enlargement is a major factor for increase in debond toughness over the other factors examined.
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Date Issued
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2001
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PURL
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http://purl.flvc.org/fcla/dt/12751
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Subject Headings
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Sandwich construction, Fracture mechanics
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Format
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Document (PDF)
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Title
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Factors affecting success in organic chemistry.
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Creator
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Zaplatynski, Andrea Maria, Florida Atlantic University, Haky, Jerome E.
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Abstract/Description
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In this study we correlate academic and non-academic descriptors with Organic Chemistry final grades for students enrolled at a Florida public university. Using multiple regression analysis, the following predictors are analyzed for a sample population of 904 students: age, gender, ethnicity, academic classification, SAT scores, major, overall grade point average (GPA), semesters lapsed between courses, institution where General Chemistry was taken, prerequisite grades, and number of math and...
Show moreIn this study we correlate academic and non-academic descriptors with Organic Chemistry final grades for students enrolled at a Florida public university. Using multiple regression analysis, the following predictors are analyzed for a sample population of 904 students: age, gender, ethnicity, academic classification, SAT scores, major, overall grade point average (GPA), semesters lapsed between courses, institution where General Chemistry was taken, prerequisite grades, and number of math and science courses taken with their respective grades. Results indicate strong correlations exist between final grade in Organic Chemistry, GPA and General Chemistry final grade. Additionally, Organic Chemistry final grades correlate with academic course load and the type of institution where General Chemistry was studied. We believe these results can be employing as a tool for advising students in planning their academic programs.
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Date Issued
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2006
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PURL
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http://purl.flvc.org/fcla/dt/13389
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Subject Headings
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Chemistry, Organic--Study and teaching, Education, Secondary, Regression analysis, Academic achievement--Education (Higher)--Florida
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Format
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Document (PDF)
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Title
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Factors related to time necessary for degree completion for the 1985-1986 freshman classes at Florida Atlantic University.
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Creator
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Butler, Cynthia W., Florida Atlantic University, MacKenzie, Donald G.
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Abstract/Description
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The purpose of this study was to identify factors that predict the length of time a student takes to complete a bachelor's degree. Multiple regression analysis was used to predict the criterion, number of semesters to graduation, from the 33 predictors derived from a questionnaire. Seventy-four percent of the variance in semesters to graduation (F(33,40) = 3.51, p
Show moreThe purpose of this study was to identify factors that predict the length of time a student takes to complete a bachelor's degree. Multiple regression analysis was used to predict the criterion, number of semesters to graduation, from the 33 predictors derived from a questionnaire. Seventy-four percent of the variance in semesters to graduation (F(33,40) = 3.51, p < .0002) was accounted for by the predictors. A subset analysis revealed that 43% (F(9,94) = 7.95, p < .0001) of the variance in number of semesters to graduate was accounted for by the nine predictors judged to be best. These predictors were previous credits earned, change of major, effects of major change, enrollment status, social interaction with faculty, sense of belonging, perception of the academic experience, perception of performance, and expectation of time to graduate. Cross-validation of this subset of predictors yielded an R^2 of .148. This level of shrinkage was due to the small sample size in relation to the number of predictors.
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Date Issued
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1994
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PURL
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http://purl.flvc.org/fcla/dt/12370
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Subject Headings
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Florida Atlantic University--Degrees
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Format
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Document (PDF)
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Title
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Financial market integration and cross-border spillover effects in Europe.
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Creator
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Bley, Jorg., Florida Atlantic University, Madura, Jeff
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Abstract/Description
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The ongoing political, legal, and economic harmonization within the European Union has lead to a higher degree of integration of national financial markets. The introduction of the single European currency, the euro, eliminated a traditional source of risk to international portfolio investors. In light of these developments, Part I of the empirical analysis had the following objectives: (1) to determine the relative importance of country, sector, and industry factors in explaining individual...
Show moreThe ongoing political, legal, and economic harmonization within the European Union has lead to a higher degree of integration of national financial markets. The introduction of the single European currency, the euro, eliminated a traditional source of risk to international portfolio investors. In light of these developments, Part I of the empirical analysis had the following objectives: (1) to determine the relative importance of country, sector, and industry factors in explaining individual company's stock return behavior in the wake of the formation of the European Union, (2) to identify the multiple factor model, consisting of country and/or sector and/or industry factors, that was best at explaining European stock returns over the observation period, (3) to discover cross-sectional differences and non-stationarity in the industry portfolio return sensitivity to country, sector, and industry factors, (4) to find out whether the European market had become more independent from the other two major trading areas, the US and the Pacific Rim, over the period 6/1994 to 6/1999, and (5) to quantify industry structure-related changes in portfolio diversification benefits in European stock portfolios. Diversification benefits of country portfolios still outweighed diversification benefits of European industry portfolios. However, evidence was found for a gradual change in the degree of homogeneity within European industries in the wake of the ongoing harmonization of European financial markets. It seems reasonable to assume diversification effects in the future to become even more pronounced for portfolios generated within a country market but across industries. The main objective of Part II, was to determine the valuation effects of merger and acquisition announcements on national rivals (intra-industry effects) and European rivals (inter-country effects). Conducting various cross-sectional return analyses, country and industry-specific sources of intra-industry effects and inter-country effects were identified. With the elimination of foreign exchange rate risks, following the introduction of the single currency on January 1, 1999, cross-border spillover effects have become more pronounced. The hypothesis that the introduction of the euro facilitates the transmission of (private) information across geographic markets boundaries is clearly supported by the findings of the cross-sectional regression analysis.
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Date Issued
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2000
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PURL
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http://purl.flvc.org/fcla/dt/12640
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Subject Headings
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European Union countries--Economic conditions, International economic integration, Europe--Economic integration
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Format
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Document (PDF)
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Title
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Floodplain habitat use and movements of two centrarchids within pool B of the Kissimmee River, Florida.
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Creator
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Giles, Matthew Justin, Florida Atlantic University, Courtenay, Walter R. Jr., Wilzbach, Margaret A.
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Abstract/Description
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Floodplains are important elements of river-floodplain systems. Numerous riverine fishes utilize floodplain habitats for reproduction, feeding, and protection. Largemouth bass and bluegill sunfish were tracked using radiotelemetry, and environmental parameters were measured at fish locations. Bass and bluegill used habitats with the same physical and chemical characteristics. Floodplain habitats were utilized frequently, as much as main river channel habitats. Fishes used habitats dominated...
Show moreFloodplains are important elements of river-floodplain systems. Numerous riverine fishes utilize floodplain habitats for reproduction, feeding, and protection. Largemouth bass and bluegill sunfish were tracked using radiotelemetry, and environmental parameters were measured at fish locations. Bass and bluegill used habitats with the same physical and chemical characteristics. Floodplain habitats were utilized frequently, as much as main river channel habitats. Fishes used habitats dominated by vegetation, with sand substrates, and that were more stable with regard to environmental conditions. Largemouth bass were more mobile than bluegill sunfish. Fish movements may have been in response to unfavorable environmental conditions, as more mobile fishes were associated with higher water temperatures and lower concentrations of dissolved oxygen.
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Date Issued
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1999
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PURL
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http://purl.flvc.org/fau/fd/FADT15728
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Subject Headings
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Floodplain ecology--Florida--Kissimmee River Watershed, Largemouth bass--Florida--Kissimmee River Watershed, Centrarchidae--Florida--Kissimmee River Watershed
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Format
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Document (PDF)
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Title
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Florida Student Progression Policies and Their Effect on Student Achievement.
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Creator
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Wright, Marielena P., Pisapia, John, Florida Atlantic University
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Abstract/Description
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This study investigated the varied district student progression policies from 9th to lOth grade and their effect on the district-level achievement of the high schools as measured by six categories of FCA T achievement consistent with those that comprise district grades during the 2005-2006 academic year. In Florida, the state assessment policy and the resulting rewards and sanctions policy, known as the Florida A+ Plan, are uniformly defined across districts while the state student...
Show moreThis study investigated the varied district student progression policies from 9th to lOth grade and their effect on the district-level achievement of the high schools as measured by six categories of FCA T achievement consistent with those that comprise district grades during the 2005-2006 academic year. In Florida, the state assessment policy and the resulting rewards and sanctions policy, known as the Florida A+ Plan, are uniformly defined across districts while the state student progression policy simply provides guidelines for districts to follow. This results in varied student progression policies in the 67 school districts within the state. A quantitative study of the district student progression policies for promotion from 9th to lOth grade and student achievement, as measured by the Florida Comprehensive Assessment Test (FCA T), was conducted to determine the effect of varied student progression policies on district FCA T achievement. Five predictor variables, based upon promotion requirements from the 9th to 1Oth grade, - number of credits, the type of credits, the availability of midyear promotion, additional requirements to be met for midyear promotion, and minimum grade point average - the six FCA T based criterion variables; and, two contextual variables - district socioeconomic status (SES) and district size were used in the study. Linear regression analysis was used to find that the inclusion of a minimum grade point average had a significant inverse relationship with FCA T Reading Learning Gains. Additionally, theSES of the district was found to significantly affect the relationship between the midyear promotion of students and FCAT Reading proficiency; the type of credits required for promotion and FCA T Math proficiency; and the minimum number of credits required for promotion and both FCA T Math learning gains and FCA T Reading learning gains of the lowest quartile of students. The second order interaction of district size on the effect of SES on the relationship between the predictor and criterion variables yielded significant moderating effects of district size on the moderating effect of SES for the relationships between the minimum number of credits required for promotion and both FCA T Math proficiency and FCA T Math learning gains.
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Date Issued
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2008
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PURL
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http://purl.flvc.org/fau/fd/FA00000716
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Subject Headings
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Academic achievement--Florida--Evaluation, Florida Comprehensive Assessment Test--Evaluation, Educational tests and measurements--Florida--Evaluation, Grading and marking (Students), Educational sociology--Florida
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Format
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Document (PDF)
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Title
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For peace and union: Public opinion and antiwar sentiment in the Civil War North.
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Creator
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Kearney, Kevin Lee., Florida Atlantic University, Engle, Stephen D.
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Abstract/Description
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Despite the beliefs of modern Americans, the people of the North did not unanimously support the Civil War. Instead, peace demonstrations and draft dodgers abounded, threatening to undermine public morale. The war confronted the people with a choice between peace and Union. When the war appeared to fail in its objective of restoring the Union the people more readily accepted the idea of a negotiated settlement, but victory restored morale and encouraged them to continue the fight. Ultimately,...
Show moreDespite the beliefs of modern Americans, the people of the North did not unanimously support the Civil War. Instead, peace demonstrations and draft dodgers abounded, threatening to undermine public morale. The war confronted the people with a choice between peace and Union. When the war appeared to fail in its objective of restoring the Union the people more readily accepted the idea of a negotiated settlement, but victory restored morale and encouraged them to continue the fight. Ultimately, sentiment for Union overcame the desire for peace, so the North remained committed until it defeated the rebellion.
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Date Issued
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1999
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PURL
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http://purl.flvc.org/fcla/dt/15693
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Subject Headings
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United States--Civil War, 1861-1865--Public opinion
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Format
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Document (PDF)
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Title
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For God and country: W. T. Stead and the beginnings of the new journalism in Victorian Britain, 1883-1885.
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Creator
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Guerty, Phillip Michael., Florida Atlantic University, Frazer, Heather
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Abstract/Description
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Since the late nineteenth century, scholars and historians have attributed the growth of a sensational press in Britain to long-term societal changes such as the rise of capitalism. What has been ignored, however, is the importance of individual initiative, mainly that of W. T. Stead of the Pall Mall Gazette. During the Sudan Crisis of 1883-1885, Stead introduced a new type of journalism to England that combined typographical innovations, such as maps and striking headlines, with a lively...
Show moreSince the late nineteenth century, scholars and historians have attributed the growth of a sensational press in Britain to long-term societal changes such as the rise of capitalism. What has been ignored, however, is the importance of individual initiative, mainly that of W. T. Stead of the Pall Mall Gazette. During the Sudan Crisis of 1883-1885, Stead introduced a new type of journalism to England that combined typographical innovations, such as maps and striking headlines, with a lively literary style. At the root of this new type of reporting were Stead's deep-felt convictions about spreading Christianity, extending the empire, and improving the world through newspapers.
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Date Issued
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1997
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PURL
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http://purl.flvc.org/fcla/dt/15463
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Subject Headings
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Stead, W. T.--(William Thomas),--1849-1912., Journalism--Social aspects--Great Britain., English newspapers--History., Press--Great Britain--History.
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Format
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Document (PDF)
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Title
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Florida local government compliance with transportation concurrency.
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Creator
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Liberti, Raymond A., Florida Atlantic University, Mendell, Jay S.
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Abstract/Description
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Growth management grew as a concept and policy objective in the 1970s and 1980s. The interrelationships of the state and local governments changed when Florida developed growth policy and local government implemented the policy. Nine mandatory elements to be included in a local comprehensive plan and seven mandatory concurrency elements of the 1985 Florida Growth Management Act were expensive elements for local government to implement. As a result, the issue of funding the impacts of growth...
Show moreGrowth management grew as a concept and policy objective in the 1970s and 1980s. The interrelationships of the state and local governments changed when Florida developed growth policy and local government implemented the policy. Nine mandatory elements to be included in a local comprehensive plan and seven mandatory concurrency elements of the 1985 Florida Growth Management Act were expensive elements for local government to implement. As a result, the issue of funding the impacts of growth drove the growth management agenda, leaving the question of compliance. The question is: Did Florida local government comply with the transportation concurrency element of the Florida Growth Management Act? This dissertation analyzed five Florida counties and two Georgia counties to determine whether there was compliance with their respective state transportation policies. The study purposely looked at counties in different stages of growth to determine if the transportation requirements of the Florida Growth Management Act and the Georgia State Planning Act affected local budgets. Transportation is the most expensive element in local government budgets. Development orders would cease without the road capacity to carry the impact of proposed developments, making transportation the linchpin to state growth policies. A visual analysis and a multiple regression analysis were used to evaluate local government compliance with state transportation policy. A two-stage numerical evaluation was used for the visual analysis. The analysis looked for a slope change, a break in the trend, or both, after the impact of the intervention of the interrupted time series. A multiple regression analysis calculated the regression coefficient for a before and after dummy variable. The multiple regression removed the effects of population, interest rates, and road expenditure variables and isolated the effect of the dummy variable to determine local government compliance.
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Date Issued
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1997
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PURL
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http://purl.flvc.org/fcla/dt/12533
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Subject Headings
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Urban policy--Florida, Transportation--Planning, Cities and towns--Growth, Florida--Politics and government
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Format
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Document (PDF)
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Title
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Florida since 1850: Shifting patterns of population growth.
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Creator
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Drapeau, Jeanne L., Florida Atlantic University, Schultz, Ronald R., Charles E. Schmidt College of Science, Department of Geosciences
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Abstract/Description
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Florida's population growth has been spatially and temporally uneven. Significant growth occurred in different regions of the state during certain periods of time. This differential growth was a result of specific socioeconomic conditions that varied both temporally and spatially. Florida was granted statehood 1845 and served as the southern extension of the plantation system. Growth was high in the northern regions of Florida during the antebellum years. After reconstruction, railroad...
Show moreFlorida's population growth has been spatially and temporally uneven. Significant growth occurred in different regions of the state during certain periods of time. This differential growth was a result of specific socioeconomic conditions that varied both temporally and spatially. Florida was granted statehood 1845 and served as the southern extension of the plantation system. Growth was high in the northern regions of Florida during the antebellum years. After reconstruction, railroad infrastructure was developed that connected the distant reaches of the state with each other and the rest of the country. This facilitated the growth of the central regions of the peninsula. The construction of roads and the popularity of the automobile brought settlers and land developers to the southern regions of Florida in the early twentieth century. After a growth slump during the Depression, activities of World War II once again stimulated growth in the state, especially in the southeastern peninsula. The recent phenomenon of elderly migration has shifted growth to the less populated areas of the southwestern peninsula.
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Date Issued
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1994
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PURL
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http://purl.flvc.org/fcla/dt/15059
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Subject Headings
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Population, Cities and towns--Florida--Growth, Florida--Population, Migration, Internal--Florida, Florida--Population--Statistics
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Format
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Document (PDF)
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Title
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Foraging Habitat Modeling and Nesting Ecology of Wood Storks in Everglades National Park.
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Creator
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Herring, Heidi K., Gawlik, Dale E., Florida Atlantic University
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Abstract/Description
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Understanding the foraging and nesting ecology of Wood Storks will play an important role in Everglades restoration because this species has specific resource requirements during the breeding season which ultimately affect nest success. I conducted a foraging habitat use and selection study, which indicated that Wood Storks from coastal colonies, Paurotis Pond and Rodgers River Bay, require a narrow range of water depths in the mangrove-saltwater marsh ecotone near their colonies as well in...
Show moreUnderstanding the foraging and nesting ecology of Wood Storks will play an important role in Everglades restoration because this species has specific resource requirements during the breeding season which ultimately affect nest success. I conducted a foraging habitat use and selection study, which indicated that Wood Storks from coastal colonies, Paurotis Pond and Rodgers River Bay, require a narrow range of water depths in the mangrove-saltwater marsh ecotone near their colonies as well in the freshwater marsh habitats of the inland Everglades. Wood Storks nesting at the inland colony, Tamiarni West, relied heavily upon nearby freshwater marsh habitat and selected foraging sites associated with shrub swamp habitat as well as optimal water depths. The observational nesting ecology study of Wood Storks showed marked differences in parental nest attendance and food delivery rates between the two years of study, 2005 and 2006, which had different hydrological patterns.
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Date Issued
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2007
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PURL
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http://purl.flvc.org/fau/fd/FA00000761
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Subject Headings
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Habitat selection, Animal behavior, Wood stork--Habitat, Bird populations--Florida--Everglades National Park, Everglades National Park (Fla )
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Format
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Document (PDF)
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Title
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Florida automobile insurance to 1971.
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Creator
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Miller, Karl F., Florida Atlantic University, Curl, Donald W.
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Abstract/Description
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The history of automobile insurance in Florida provides a case study of economic adaptation to the negative consequences of rapid technological change. The emergence of the automobile in early twentieth century Florida brought with it widespread bodily injury and property damage. The insurance industry and the state government interacted for several decades in trying to fashion a way of reducing the economic cost of automobile accidents. Florida resisted a comprehensive application of...
Show moreThe history of automobile insurance in Florida provides a case study of economic adaptation to the negative consequences of rapid technological change. The emergence of the automobile in early twentieth century Florida brought with it widespread bodily injury and property damage. The insurance industry and the state government interacted for several decades in trying to fashion a way of reducing the economic cost of automobile accidents. Florida resisted a comprehensive application of insurance to the problem until 1971, when it passed the Florida Automobile Reparations Reform Act. Had Florida acted sooner, the economic impact of automobile accidents could have been greatly mitigated.
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Date Issued
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2002
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PURL
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http://purl.flvc.org/fcla/dt/12953
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Subject Headings
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Insurance, Automobile--Florida--History--20th century., Liability for traffic accidents--Florida.
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Format
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Document (PDF)
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Title
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Flow control in interconnected token ring local area networks.
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Creator
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Varughese, Sicely Babu., Florida Atlantic University, Ilyas, Mohammad, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
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Abstract/Description
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This thesis investigates some of the flow control issues in a system of Local Area Networks consisting of multiple token rings interconnected through bridges via a backbone ring. Flow control is realized by a window mechanism, i.e., a sender is permitted to transmit not more than a fixed number, W (the window size), of frames without having to wait for an acknowledgment. The solution is based on an existing approximation of the mean end-to-end delay in a stand-alone token ring LAN, which is...
Show moreThis thesis investigates some of the flow control issues in a system of Local Area Networks consisting of multiple token rings interconnected through bridges via a backbone ring. Flow control is realized by a window mechanism, i.e., a sender is permitted to transmit not more than a fixed number, W (the window size), of frames without having to wait for an acknowledgment. The solution is based on an existing approximation of the mean end-to-end delay in a stand-alone token ring LAN, which is extended by approximating the arrival rates at the bridges as a function of the throughput of each subnetwork and the probability that, the throughput is directed to the other subnetworks. The packet-lengths are assumed to be exponentially distributed. The performance of the system is evaluated by varying the window size.
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Date Issued
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1988
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PURL
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http://purl.flvc.org/fcla/dt/14447
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Subject Headings
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IBM Token-Ring Network (Local area network system)
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Format
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Document (PDF)
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Title
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Flexural failure of curved sandwich beams with implanted interfacial debonds.
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Creator
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Layne, Andrew Maxwell., Florida Atlantic University, Carlsson, Leif A., College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
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Abstract/Description
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Effects of face/core debonding on the structural integrity of curved sandwich beams subjected to opening bending moments has been examined experimentally. Curved beams of glass/polyester faces and PVC H30 foam core were manufactured. Various sizes of debonds were created using thin Teflon sheets inserted at the outer face/core interface during processing. A fixture for testing curved beams in flexure was designed, manufactured and evaluated. Surface strains at the middle of the curve were...
Show moreEffects of face/core debonding on the structural integrity of curved sandwich beams subjected to opening bending moments has been examined experimentally. Curved beams of glass/polyester faces and PVC H30 foam core were manufactured. Various sizes of debonds were created using thin Teflon sheets inserted at the outer face/core interface during processing. A fixture for testing curved beams in flexure was designed, manufactured and evaluated. Surface strains at the middle of the curve were recorded. Buckling of the debonded face sheet occurred followed by face/core propagation of the debond. Strength reduction of the beams under opening moments due to face/core debonding was substantial.
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Date Issued
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2000
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PURL
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http://purl.flvc.org/fcla/dt/12688
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Subject Headings
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Sandwich construction, Flexure
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Format
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Document (PDF)
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Title
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Elucidation of Microbial Communities From South Florida Beaches Using 16S rRNA Sequence Analysis.
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Creator
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Ponukumati, Sushma, Esiobu, Nwadiuto, Florida Atlantic University
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Abstract/Description
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The composition of marine bacterial communities from South Florida beaches were characterized using 16S rRNA sequence analysis. To compare cultivable and noncultured populations, community genomic DNA was extracted directly from sand and seawater samples and from two cultured equivalents. Only two ofthe 86 (2.3%) direct extracted sequences and 79 of 150 (52.6%) culture sequences belong to known isolates in Ribosomal Database (version 9.0) at 95% confidence level. At low stringency (p=0.70),...
Show moreThe composition of marine bacterial communities from South Florida beaches were characterized using 16S rRNA sequence analysis. To compare cultivable and noncultured populations, community genomic DNA was extracted directly from sand and seawater samples and from two cultured equivalents. Only two ofthe 86 (2.3%) direct extracted sequences and 79 of 150 (52.6%) culture sequences belong to known isolates in Ribosomal Database (version 9.0) at 95% confidence level. At low stringency (p=0.70), the populations cluster into several unknown clads with early divergence, indicating the presence of novel well established bacterial groups. Members of phylum Bacteroidetes, Firmicuites and Proteobacteria were identified, with the latter being the most prevalent in culture. Diversity indices rank Hollywood beach > Fort Lauderdale > Hobie beach. Taxonomic representation indicates marine water as more diverse compared to dry sand and wet sand. A combination of phylogenetic markers will be needed to define the immense diversity of this niche.
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Date Issued
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2007
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PURL
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http://purl.flvc.org/fau/fd/FA00000809
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Subject Headings
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Marine microbiology--Florida, Evolutionary genetics, Biodiversity--Research, Marine biodiversity conservation
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Format
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Document (PDF)
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Title
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Entrepreneurial scanning behavior in new childcare ventures.
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Creator
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Leaptrott, John., Florida Atlantic University, Peterson, Mark F.
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Abstract/Description
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This dissertation assessed two aspects of entrepreneurial scanning related to new ventures. The first was the information search and analysis these entrepreneurs performed when they made certain basic decisions necessary to start most business prior to commencement of operations. The second was the ongoing information search activities of entrepreneurs who had started childcare businesses and were managing them in their first few years of operation. In addition, this dissertation assessed the...
Show moreThis dissertation assessed two aspects of entrepreneurial scanning related to new ventures. The first was the information search and analysis these entrepreneurs performed when they made certain basic decisions necessary to start most business prior to commencement of operations. The second was the ongoing information search activities of entrepreneurs who had started childcare businesses and were managing them in their first few years of operation. In addition, this dissertation assessed the extent these scanning activities were consistent with a dual process theory of reasoning. Finally, the limitations of the study and suggested future research directions for research of entrepreneurial scanning were discussed. The results suggest an entrepreneur's scanning behavior at the start of the business may be different from scanning behavior that occurs once the business has been operating for a period of time. The need for cognition, exposure to statistical thinking and intelligence (operationalized in this study as the amount of formal education) were positively related to the kind of information search and analysis undertaken by the entrepreneur at the startup of the business that Kahneman (2003) and others describe as System 2 reasoning. The accessibility of information and the amount of formal education were positively related to scanning that was done in periods subsequent to startup by these childcare entrepreneurs. Work-family conflict was negatively related to scanning during this period.
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Date Issued
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2005
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PURL
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http://purl.flvc.org/fcla/dt/12150
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Subject Headings
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Organizational behavior, Strategic planning, Entrepreneurship, Childcare services--Management, Day care centers--Administration, New business enterprises--Management, Success in business
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Format
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Document (PDF)
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Title
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Environmental archaeology: Locational analysis of Paleoindian and Archaic period sites in south Florida utilizing geographic information systems.
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Creator
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Turck, John A., Florida Atlantic University, Kennedy, William J.
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Abstract/Description
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The interrelatedness of archaeology, geography, and environment, in conjunction with the utilization of modern technology has become evident. This thesis employs the main principles of Environmental Archaeology while utilizing Geographic Information System technology to analyze the distribution of Paleoindian and Archaic period sites in south Florida. The following research demonstrates populations preferred certain areas to others, and environment played a considerable role in this...
Show moreThe interrelatedness of archaeology, geography, and environment, in conjunction with the utilization of modern technology has become evident. This thesis employs the main principles of Environmental Archaeology while utilizing Geographic Information System technology to analyze the distribution of Paleoindian and Archaic period sites in south Florida. The following research demonstrates populations preferred certain areas to others, and environment played a considerable role in this preference, as indicated by the patterns that arose when site locations were analyzed based on environmental variables. These patterns in site locations were used to determine the most likely and least likely areas of south Florida for finding new archaeological sites. This thesis also provides an evaluation of the varions environmental and archaeological data sets used, concluding that paleoenvironmental reconstruction is a worthwhile goal, greatly enhancing modern environmental data sets used in this study.
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Date Issued
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2003
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PURL
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http://purl.flvc.org/fcla/dt/13072
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Subject Headings
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Environmental archaeology, Excavations (Archaeology)--Florida, Archaeology--Geographic information systems, Paleo-Indians--Florida--Antiquities
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Format
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Document (PDF)
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Title
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Enumeration of lattice paths using finite operator calculus.
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Creator
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Humphreys, Katherine L. B., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Mathematical Sciences
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Abstract/Description
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This dissertation discusses umbral calculus and lattice path enumeration and then continues by explicitly enumerating weighted directed lattice paths staying above a boundary using finite operator calculus. In Part I we discuss the history and representative results of the two topics. We separate umbral calculus into two fields, classical umbral calculus and finite operator calculus, and attempt to correct their intertwined histories. We discuss the beginnings of lattice path enumeration and...
Show moreThis dissertation discusses umbral calculus and lattice path enumeration and then continues by explicitly enumerating weighted directed lattice paths staying above a boundary using finite operator calculus. In Part I we discuss the history and representative results of the two topics. We separate umbral calculus into two fields, classical umbral calculus and finite operator calculus, and attempt to correct their intertwined histories. We discuss the beginnings of lattice path enumeration and survey the types of lattice path enumeration problems and solution methods found in the literature. In Part II, we give necessary conditions of a step set or of its equivalent operator equation such that the path count functions coincide with Sheffer polynomials where the path counts are nonzero. We derive the polynomials from an expansion theorem that includes a polynomial basis and initial conditions. The polynomial basis is derived from a known basic sequence with a transfer formula and a linear operator equation based on the step set. The initial conditions are functionals on the polynomials designed to vanish when evaluated along the boundary line for all but finitely many values. We solve lattice path enumeration problems with four types of boundary conditions and various step sets. We work out general solutions for paths that stay in the first quadrant, paths that stay in the first quadrant and above a line with an integer slope, and paths that can reach the boundary with an additional privileged access step set. We count the number of paths, and in one example we count the paths refined by the number of times they contact the boundary. We explore step sets including a general three-element step set, weighted finite step sets, weighted infinite step sets, and step sets that include paths as steps called pathlets. We research if our methods still give explicit solutions as we complicate and expand the step sets. The example sections include fourteen explicitly worked out problems. Part II of the dissertation includes and extends the three papers on the subject by Humphreys and Niederhausen written between 2000 and 2004.
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Date Issued
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2005
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PURL
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http://purl.flvc.org/fcla/dt/12165
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Subject Headings
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Mathematics
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Format
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Document (PDF)
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Title
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Environmental cracking susceptibility of austenitic stainless steel alloys in acidified seawater.
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Creator
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Poulassichidis, Antonios N., Florida Atlantic University, Lipka, Stephen M., College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
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Abstract/Description
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The stress corrosion cracking susceptibility of austenitic stainless steels SS304L, SS316L and SS904L was studied in an acidified seawater environment by slow strain rate testing at 24, 38 and 66$\sp\circ$C. Fractographic evidence of SCC susceptibility was obtained using scanning electron microscopy. The degree of susceptibility to SCC for each alloy in these environments is discussed based on the mechanical parameters, fractography and anodic polarization behavior. The results showed that...
Show moreThe stress corrosion cracking susceptibility of austenitic stainless steels SS304L, SS316L and SS904L was studied in an acidified seawater environment by slow strain rate testing at 24, 38 and 66$\sp\circ$C. Fractographic evidence of SCC susceptibility was obtained using scanning electron microscopy. The degree of susceptibility to SCC for each alloy in these environments is discussed based on the mechanical parameters, fractography and anodic polarization behavior. The results showed that SS904L performed better than SS304L and SS316L in the aforementioned environments.
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Date Issued
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1994
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PURL
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http://purl.flvc.org/fcla/dt/15071
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Subject Headings
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Stress corrosion, Seawater corrosion, Alloys--Stress corrosion
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Format
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Document (PDF)
Pages