999 resultados para fiu
Resumo:
The market model is the most frequently estimated model in financial economics and has proven extremely useful in the estimation of systematic risk. In this era of rapid globalization of financial markets there has been a substantial increase in cross listings of stocks in foreign and regional capital markets. As many as a third to a half of the stocks in some major exchanges are foreign listed. The multiple listings of stocks has major implications for the estimation of systematic risk. The traditiona1 method of estimating the market model by using data from only one market will lead to misleading estimates of beta. This study demonstrates that the estimator for systematic risk and the methodology itself changes when stocks are listed in multiple markets. General expressions are developed to obtain the estimator of global beta under a variety of assumptions about the error terms of the market models for different capital markets. The assumptions pertain both to the volatilities of the abnormal returns in each market, and to the relationship between the markets. ^ Explicit expressions are derived for the estimation of global systematic risk beta when the returns are homoscedastic and also under different heteroscedastic conditions both within and/or between markets. These results for the estimation of global beta are further extended when return generating process follows an autoregressive scheme.^
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Fever has both beneficial and detrimental effects. There is evidence that antipyretics and physical cooling methods, when used in combination, are more effective than antipyretics alone. This randomized controlled study examined 45 acutely ill adults with fever ${\ge}102.5\sp\circ\rm F$ where three nursing interventions were used. Group I received acetaminophen 650 mgs., Group II received acetaminophen 650 mgs. and tepid sponging, and Group III received acetaminophen 650 mgs. and hypothermia blanket. The purpose of this study was to evaluate which nursing intervention reduced temperature most effectively with respect to eight biobehavioral variables. Research hypotheses were tested statistically using the chi-square test and repeated measures analysis of variance. The study found statistically significant results for fever reduction overall, but no difference for the groups. Therefore, we suggest that acetaminophen alone be used in the treatment of fever in order to decrease cost, nursing time, and increase patient comfort. ^
Resumo:
The purpose of this research study was to investigate if the determination of school readiness as it was evaluated by Broward County kindergarten teachers on the Florida's Expectations of School Readiness checklist can be attributed to the effects of gender, chronological age on school entry, racial or ethnic background, attending public preschool, native language other than English, or socioeconomic status.^ This is a descriptive study in which the number of expectations passed or failed for each of the identifier categories was compared. The Chi-squared distribution was used to evaluate the null hypothesis that "chronological age at entry to school, gender, race or ethnicity, native language other than English, public preschool experience, and socioeconomic status have no effect on the determination of readiness for school". Results were confirmed using t-tests, ANOVA, and linear regression models. The cohort of 1555 Broward County students in the study were evaluated using the Florida's Expectations for School Readiness checklist and were determined not ready for school during the initial data collection year 1996-1997.^ The determination of school readiness was significantly dependent on the gender, and racial or ethnic background of the students in the cohort. The socioeconomic status and native language other than English designations were significant for students only in the areas of preacademic, academic and literacy development. Chronological age on entry to school or attendance in public preschool prior to entry in kindergarten for the cohort was not significant in the determination of readiness for school.^ Given the fact that this study followed only students that were determined not ready for school, it is recommended that a second cohort of both "ready" and "not ready" students be studied. ^
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The purpose of this study was to evaluate the effect of cooperative learning strategies on students' attitudes toward science and achievement in BSC 1005L, a non-science majors' general biology laboratory course at an urban community college. Data were gathered on the participants' attitudes toward science and cognitive biology level pre and post treatment in BSC 1005L. Elements of the Learning Together model developed by Johnson and Johnson and the Student Team-Achievement Divisions model created by Slavin were incorporated into the experimental sections of BSC 1005L.^ Four sections of BSC 1005L participated in this study. Participants were enrolled in the 1998 spring (January) term. Students met weekly in a two hour laboratory session. The treatment was administered to the experimental group over a ten week period. A quasi-experimental pretest-posttest control group design was used. Students in the cooperative learning group (n$\sb1$ = 27) were administered the Test of Science-Related Attitudes (TOSRA) and the cognitive biology test at the same time as the control group (n$\sb2$ = 19) (at the beginning and end of the term).^ Statistical analyses confirmed that both groups were equivalent regarding ethnicity, gender, college grade point average and number of absences. Independent sample t-tests performed on pretest mean scores indicated no significant differences in the TOSRA scale two or biology knowledge between the cooperative learning group and the control group. The scores of TOSRA scales: one, three, four, five, six, and seven were significantly lower in the cooperative learning group. Independent sample t-tests of the mean score differences did not show any significant differences in posttest attitudes toward science or biology knowledge between the two groups. Paired t-tests did not indicate any significant differences on the TOSRA or biology knowledge within the cooperative learning group. Paired t-tests did show significant differences within the control group on TOSRA scale two and biology knowledge. ANCOVAs did not indicate any significant differences on the post mean scores of the TOSRA or biology knowledge adjusted by differences in the pretest mean scores. Analysis of the research data did not show any significant correlation between attitudes toward science and biology knowledge. ^
Resumo:
The completion of and graduation from high school is a major problem that must be resolved. A 6% random sample of the students (1,059) who were in the 9th grade in Miami-Dade Public Schools, a large urban school district, September 1992, were selected for this study. The sample was divided into 2 groups, advanced academic and general track students. Each group was then divided into vocational and non-vocational. A causal comparative design was used to evaluate the results for graduate vs. non-graduate. The indicators were the program of study, attendance, standardized test scores, grade point average, ethnicity and gender. It was found that both advanced academic and general track students had significantly higher graduation rates at the .01 level when a vocational education program was part of their studies. All of the other indicators did not show any significant differences. If we arc to improve students educational outcomes and reduce the dropout rate, vocational education should be part of every student's education.^
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This study examines what many scholars have neglected to investigate when addressing post Civil War issues in Lebanon. Most studies have addressed political issues surrounding activities of Shiite movements, such as Harakat Amal or Hizb Allah, while socioeconomic issues have been neglected.^ Imam Musa Sadr challenged the power of traditional Shiite leaders by creating official Shiites institutions and movements like Amal. The Iranian Revolution and the Israeli invasion of Lebanon in 1982 sparked the creation of Hizb Allah which, not only struggled against its foes, but also provided social services to the Shiites. This development program has been central in creating political legitimacy for Hizb Allah, regardless of its military situation, which suggests that socioeconomic development can transform a militia into a legitimate actor on the Lebanese political scene. The survivability of Shiite parties is therefore tantamount to not only their military might, but also to their social involvement. ^
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The purpose of this study was to determine how dental and medical school deans perceived their own leadership styles and how many management/leadership perspectives they used when approaching a problem. A descriptive and correlational study was conducted which examined the leadership orientations or "frames" utilized by these deans. Four frames--the structural, the human resource, the political, and the symbolic--emerged from leadership studies which described the behavior of leaders in organizational actions and problem solving.^ Employing the repeated measures ANCOVA, it was found that there were no significant interactions between type of dean and perceptions or perspectives. However, the main effects of both leadership style perceptions and the use of perspectives were significant. This indicated that over the total sample of deans, both perceptions and perspectives were used differently; the deans perceived themselves and used perspectives the highest for the human resource frame and the lowest for the political frame. Also, dental deans' mean use overall of the four perspective frames was higher than the medical deans. In addition to the ANCOVA, t-tests performed on perceptions revealed that the deans perceived the frames differently in three human resource items. Pearson's correlations indicated that for the combined sample of deans, significant negative correlations existed when the human resource or symbolic frame was compared to the structural frame. All of the deans used multiple frames, allowing them to re-frame or combine frames according to the situation. ^
Resumo:
There has been increasing interest in expanding the scope of the study of the "basic" emotions and their development in infancy to include more of the so-called "complex" emotions like jealousy. This dissertation investigated evidence for the divergence of jealousy in infants from both fear and anger, two of the basic emotions said to be precursors and contributors to the emergence of jealousy in the later part of the first year of life. Participants judged how well eight emotion-denoting terms (including jealousy, anger and fear) described infants' emotionality in fear-, anger-, and jealousy-provoking situations in which the social context of the emotion episodes was either included or excluded. Differences within and between participants' judgments of the eight terms in the two context conditions were examined across the three emotion-provoking conditions. Results suggested that infants' emotional behavior denoting jealousy was not judged differently from behavior denoting anger or fear in the absence of contextual information and, that when contextual information was provided, attributions of infant jealousy, anger, and fear were made "correctly" for their respective target emotion conditions. ^
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The present study researched how first-generation black national Caribbean groups and native born black Americans perceived each other socially within an African American institution. Each group rated the other group on items dealing with perceived social relations. Two black ethnically-distinct communities totaling 151 participants were studied. Chi-square ($\chi\sp2$) and one-way analyses of variances (ANOVAs) were employed to test the collected data. The study yielded results about the researched groups that supported both the major findings in the review literature and the thesis's hypothesis; namely, that black Caribbean nationals tend to perceive that they relate socially more with their own group than with African Americans even as mutual participants in a monoracial institution. The present study was unique, as it incorporated a multinational Caribbean group and an African American group that the literature has not previously researched together, and especially as it surveyed these two groups in the context of a black-owned institution. ^
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This dissertation tested the effectiveness of a psychosocial intervention, the Personal Development in the Context of Relationships (PDCR) program. The aim of the PDCR seeks to foster the development (or enhancement) of a sense of identity and intimacy among adolescents who participate in the program. The PDCR is a psychosocial group intervention which utilizes interpersonal relationship issues as a context to foster personal development in identity formation and facilitate the development of an individual's capacity for intimacy. The PDCR uses intervention strategies which include skills and knowledge development, experiential group exercises, and exploration for insight. Participants consisted of 110 late adolescents. A mixed-subjects design (pre-post-follow up) was used to assess the effectiveness, efficacy and utility of the PDCR on the experimental condition relative to a content/social contact control group and a time control condition. Identity exploration and identity commitment were measured by the Ego Identity Process Questionnaire (EIPQ). Total intimacy and identity role satisfaction were measured by the Erikson Psychosocial Stage Inventory (EPSI). Relationship quality and closeness were measured by the Relationship Quality Scale (RQS) and the Relationship Closeness Inventory (RCI) in an effort to assess whether any potential impact on interpersonal relationships occurs. Mixed MANOVAs were used to analyze the data with results yielding significant values for increased total identity exploration from pre to post test and decreases in total identity commitment from pre to post to follow-up test in the experimental group relative to the control conditions on the EIPQ. Further results indicated increases in total intimacy from pre to post to follow-up test in the experimental group relative to the control conditions on the EPSI. No clear trends emerged from pre to post to follow-up test for the Relationship measures. Results are discussed in terms of both practical and theoretical implications. ^
Resumo:
The purpose of this research was to assess the type and extent of sexual harassment of Miami-Dade County Public School (M-DCPS) students by school employees. In addition, the school system's existing procedures for handling such harassment were investigated, including students' awareness of and willingness to follow such procedures.^ Over 500 seniors from fourteen high schools around the county completed surveys which asked them to indicate whether or not they had received training on the topic of sexual harassment, whether or not they were aware of their school's policy on sexual harassment, whether or not they would feel comfortable reporting an incident of sexual harassment, whether or not they had experienced various forms of sexual harassment, and if they had been harassed, whether or not they reported the incident to a school official.^ Results indicated that sexual harassment of M-DCPS students by school employees is widespread, and the procedures that are currently in place to deal with this harassment are ineffective. Sixty-eight percent (68%) of the sample population indicated that a school employee had sexually harassed them; however, only four percent (4%) reported the incident to a school official. Responses indicated that this discrepancy exists because few students have received any training, few are aware of their schools' policies, and few are comfortable with the existing reporting procedures. ^
Resumo:
The purpose of this study was to explore the influence of environment, behavior, capabilities, beliefs and values, and identity, based on Dilts' (1990) levels of cognitive alignment, on the cognitive construct of sense of competence and related constructs of self-efficacy, motivation, expectations, and goal-setting among adolescent girls. An individual who is aligned is free from conflict among the interaction of these levels. In addition, academic achievement, adolescent culture, parental involvement, and school environment were four of several issues in the lives of adolescent girls examined to explore how these issues might interact with the levels of alignment and sense of competence.^ A case study approach used in-depth interviews with six female seniors from private single-sex and mixed-sex high schools organized around the levels of alignment and school environment. Response patterns were analyzed to determine each girl's varying evidence of alignment or freedom from conflict within her environment.^ The findings indicated that none of the girls were able to meet the conditions for alignment in Dilts' model or a sense of competence. School environment, parental involvement, and adolescent culture were important factors influencing the extent to which conflict was experienced by each girl. The girls with domain-specific successes developed strategies that concentrated their efforts in the domains in which they could demonstrate their best abilities. The results contribute to current theory and research on adolescent girls: and have value for practitioners working with adolescent girls in developing strategies to improve their self-efficacy, motivation, expectations, goal-setting, and overall sense of competence. ^
Resumo:
In compliance with the economic internationalization movement and the development of Asia-Pacific Regional Operation Center (APROC) in Taiwan, international business has become more and more important. To sustain favorable trade balances every year and the promotion of APROC in Taiwan, more and more talent with knowledge and skills of Business English are needed. As a consequence, it is necessary to make Business English curriculum appropriate to meet the emerging needs.^ Two groups, experimental and control, received the revised or traditional Business English course to answer the question, "Does the Business English curriculum at Tainan Woman's College of Arts & Technology (TWCAT) meet the needs of students?" Ninety-five subjects were randomly selected from the commercial departments at TWCAT and then randomly assigned to the two groups. In addition, the Business English scores of the subjects' previous semester were collected and analyzed to justify the random selection and assignment. The finding was that their initial equivalence was proved.^ A questionnaire for students and another one for the business community were administered to facilitate data collection and analysis. The results of the questionnaires were used to modify the curriculum content of Business English.^ A final-term examination was given to the subjects at the end of the pilot study of Business English in early May of 1998. The resulting scores of the examination were used to determine if there was a significant difference in learning achievement between the students of the two groups.^ Using Independent Samples Test, significant results indicated that the experimental group had higher level of learning Business English than the control group. The finding supports the hypothesis of this study.^ Recommendations based on these results are that the revised curriculum be adapted and used by TWCAT because it better meets student needs. ^
Resumo:
The rapid growth and diversity of the City of Miami has left its inhabitants somewhat lost in a city with much to offer. The challenge of this thesis is to provide Miami with an architectural proposal that enhances an understanding of its own urban context through both its form and function. Specifically, the Miami Interpretive Center (M.I.C.) will offer the community a research center for the study of the city, as well as a cultural and exhibition center to allow for the expression of its ever-changing character. With the use of historical context, site relationship and taking advantage of views, the M.I.C. will educate its users towards a better understanding of the city. The goal of the M.I.C. is to establish a center for the continued analysis of the city origins, and growth, while serving as a basis for future initiatives. It will invite the public to seek a new context for the investigation of the natural, urban, cultural, spiritual and political environment that formed the city while participating in the shaping of its future. ^
Resumo:
This dissertation describes the findings and implications of a correlational analysis. Scores earned on the Computerized Placement Test (CPT), sentence skills, were compared to essay scores of advanced English as a Second Language (ESL) students. As the CPT is designed for native speakers of English, it was hypothesized that it could be an invalid or unreliable instrument for non-native speakers. Florida community college students are mandated to take the CPT to determine preparedness, as are students at many other U.S. and Canadian colleges. If incoming students score low on the CPT, they may be required to take up to three semesters of remedial coursework. It is essential that scores earned by non-native speakers of English accurately reflect their ability level. They constitute a large and growing body of non-traditional students enrolled at community colleges.^ The study was conducted at Miami-Dade Community College, Wolfson Campus, fall 1997. Participants included 106 advanced ESL students who took both the CPT sentence skills test and wrote final essay exams. The essay exams were holistically scored by trained readers. Also, the participants took the Placement Articulation Software Service (PASS) exam, an alternative form of the CPT. Scores on the CPT and essays were compared by means of a Pearson product-moment correlation to validate the CPT. Scores on the CPT and the PASS exam were compared in the same manner to verify reliability. A percentage of appropriate placements was determined by comparing essay scores to CPT cutoff score ranges. Finally, the instruments were evaluated by means of independent-samples t-tests for performance differences between gender, age, and first language groups.^ The results indicate that the CPT sentence skills test is a valid and reliable placement instrument for advanced- level ESL students who intend to pursue community college degrees. The correlations demonstrated a substantial relationship between CPT and essay scores and a marked relationship between CPT and PASS scores. Appropriate placements were made in 86% of the cases. Furthermore, the CPT was found to discriminate equally among the gender, age, and first language groups included in this study. ^