10 resultados para Means-end approach

em Digital Commons at Florida International University


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The Ellison Executive Mentoring Inclusive Community Building (ICB) Model is a paradigm for initiating and implementing projects utilizing executives and professionals from a variety of fields and industries, university students, and pre-college students. The model emphasizes adherence to ethical values and promotes inclusiveness in community development. It is a hierarchical model in which actors in each succeeding level of operation serve as mentors to the next. Through a three-step process—content, process, and product—participants must be trained with this mentoring and apprenticeship paradigm in conflict resolution, and they receive sensitivity and diversity training through an interactive and dramatic exposition. ^ The content phase introduces participants to the model's philosophy, ethics, values and methods of operation. The process used to teach and reinforce its precepts is the mentoring and apprenticeship activities and projects in which the participants engage and whose end product demonstrates their knowledge and understanding of the model's concepts. This study sought to ascertain from the participants' perspectives whether the model's mentoring approach is an effective means of fostering inclusiveness, based upon their own experiences in using it. The research utilized a qualitative approach and included data from field observations, individual and group interviews, and written accounts of participants' attitudes. ^ Participants complete ICB projects utilizing The Ellison Model as a method of development and implementation. They generally perceive that the model is a viable tool for dealing with diversity issues whether at work, at school, or at home. The projects are also instructional in that whether participants are mentored or serve as apprentices, they gain useful skills and knowledge about their careers. Since the model is relatively new, there is ample room for research in a variety of areas including organizational studies to determine its effectiveness in combating problems related to various kinds of discrimination. ^

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Biometrics is afield of study which pursues the association of a person's identity with his/her physiological or behavioral characteristics.^ As one aspect of biometrics, face recognition has attracted special attention because it is a natural and noninvasive means to identify individuals. Most of the previous studies in face recognition are based on two-dimensional (2D) intensity images. Face recognition based on 2D intensity images, however, is sensitive to environment illumination and subject orientation changes, affecting the recognition results. With the development of three-dimensional (3D) scanners, 3D face recognition is being explored as an alternative to the traditional 2D methods for face recognition.^ This dissertation proposes a method in which the expression and the identity of a face are determined in an integrated fashion from 3D scans. In this framework, there is a front end expression recognition module which sorts the incoming 3D face according to the expression detected in the 3D scans. Then, scans with neutral expressions are processed by a corresponding 3D neutral face recognition module. Alternatively, if a scan displays a non-neutral expression, e.g., a smiling expression, it will be routed to an appropriate specialized recognition module for smiling face recognition.^ The expression recognition method proposed in this dissertation is innovative in that it uses information from 3D scans to perform the classification task. A smiling face recognition module was developed, based on the statistical modeling of the variance between faces with neutral expression and faces with a smiling expression.^ The proposed expression and face recognition framework was tested with a database containing 120 3D scans from 30 subjects (Half are neutral faces and half are smiling faces). It is shown that the proposed framework achieves a recognition rate 10% higher than attempting the identification with only the neutral face recognition module.^

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The Ellison Executive Mentoring Inclusive Community Building (ICB) Model is a paradigm for initiating and implementing projects utilizing executives and professionals from a variety of fields and industries, university students, and pre-college students. The model emphasizes adherence to ethical values and promotes inclusiveness in community development. It is a hierarchical model in which actors in each succeeding level of operation serve as mentors to the next. Through a three-step process--content, process, and product--participants must be trained with this mentoring and apprenticeship paradigm in conflict resolution, and they receive sensitivitiy and diversity training, through an interactive and dramatic exposition. The content phase introduces participants to the model's philosophy, ethics, values and methods of operation. The process used to teach and reinforce its precepts is the mentoring and apprenticeship activities and projects in which the participants engage and whose end product demontrates their knowledge and understanding of the model's concepts. This study sought to ascertain from the participants' perspectives whether the model's mentoring approach is an effective means of fostering inclusiveness, based upon their own experiences in using it. The research utilized a qualitative approach and included data from field observations, individual and group interviews, and written accounts of participants' attitudes. Participants complete ICB projects utilizing the Ellison Model as a method of development and implementation. They generally perceive that the model is a viable tool for dealing with diversity issues whether at work, at school, or at home. The projects are also instructional in that whether participants are mentored or seve as apprentices, they gain useful skills and knowledge about their careers. Since the model is relatively new, there is ample room for research in a variety of areas including organizational studies to dertmine its effectiveness in combating problems related to various kinds of discrimination.

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The Soviet Union's dissolution in December 1991 marks the end of the Cold War and the elimination of the United States' main rival for global political-economic leadership. For decades U.S. foreign policymakers had formulated policies aimed at containing the spread of Soviet communism and Moscow's interventionist policies in the Americas. They now assumed that Latin American leftist revolutionary upheavals could also be committed to history. This study explores how Congress takes an active role in U.S. foreign policymaking when dealing with revolutionary changes in Latin America. This study finds that despite Chávez's vitriolic statements and U.S. economic vulnerability due to its dependence on foreign oil sources, Congress today sees Chávez as a nuisance and not a threat to U.S. vital interests. Devoid of an extra-hemispheric, anti-American patron intent on challenging the United States for regional leadership, Chávez is seen by Congress largely as a threat to the stability of Venezuela's institutions and political-economic stability. Today both the U.S. executive and the legislative branches largely see Bolivarianism a distraction and not an existential threat. The research is based on an examination of Bolivarian Venezuela compared to revolutionary upheaval and governance in Nicaragua over the course of the twentieth century. This project is largely descriptive, qualitative in approach, but quantitative data are used when appropriate. To analyze both the U.S. executive and legislative branches' reaction to revolutionary change, Cole Blasier's theoretical propositions as developed in the Hovering Giant: U.S. Responses to Revolutionary Change in Latin America 1910-1985 are utilized. The present study highlights the fact that Blasier's propositions remain a relevant means for analyzing U.S. foreign policymaking.

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This dissertation establishes a novel system for human face learning and recognition based on incremental multilinear Principal Component Analysis (PCA). Most of the existing face recognition systems need training data during the learning process. The system as proposed in this dissertation utilizes an unsupervised or weakly supervised learning approach, in which the learning phase requires a minimal amount of training data. It also overcomes the inability of traditional systems to adapt to the testing phase as the decision process for the newly acquired images continues to rely on that same old training data set. Consequently when a new training set is to be used, the traditional approach will require that the entire eigensystem will have to be generated again. However, as a means to speed up this computational process, the proposed method uses the eigensystem generated from the old training set together with the new images to generate more effectively the new eigensystem in a so-called incremental learning process. In the empirical evaluation phase, there are two key factors that are essential in evaluating the performance of the proposed method: (1) recognition accuracy and (2) computational complexity. In order to establish the most suitable algorithm for this research, a comparative analysis of the best performing methods has been carried out first. The results of the comparative analysis advocated for the initial utilization of the multilinear PCA in our research. As for the consideration of the issue of computational complexity for the subspace update procedure, a novel incremental algorithm, which combines the traditional sequential Karhunen-Loeve (SKL) algorithm with the newly developed incremental modified fast PCA algorithm, was established. In order to utilize the multilinear PCA in the incremental process, a new unfolding method was developed to affix the newly added data at the end of the previous data. The results of the incremental process based on these two methods were obtained to bear out these new theoretical improvements. Some object tracking results using video images are also provided as another challenging task to prove the soundness of this incremental multilinear learning method.

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The assessment of organic matter (OM) sources in sediments and soils is a key to better understand the biogeochemical cycling of carbon in aquatic environments. While traditional molecular marker-based methods have provided such information for typical two end member (allochthonous/terrestrial vs. autochthonous/microbial)-dominated systems, more detailed, biomass-specific assessments are needed for ecosystems with complex OM inputs such as tropical and sub-tropical wetlands and estuaries where aquatic macrophytes and macroalgae may play an important role as OM sources. The aim of this study was to assess the utility of a combined approach using compound specific stable carbon isotope analysis and an n-alkane based proxy (Paq) to differentiate submerged and emergent/terrestrial vegetation OM inputs to soils/sediments from a sub-tropical wetland and estuarine system, the Florida Coastal Everglades. Results show that Paq values (0.13–0.51) for the emergent/terrestrial plants were generally lower than those for freshwater/marine submerged vegetation (0.45–1.00) and that compound specific δ13C values for the n-alkanes (C23 to C31) were distinctively different for terrestrial/emergent and freshwater/marine submerged plants. While crossplots of the Paq and n-alkane stable isotope values for the C23n-alkane suggest that OM inputs are controlled by vegetation changes along the freshwater to marine transect, further resolution regarding OM input changes along this landscape was obtained through principal component analysis (PCA), successfully grouping the study sites according to the OM source strengths. The data show the potential for this n-alkane based multi-proxy approach as a means of assessing OM inputs to complex ecosystems.

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This study explored the influence of an experiential, in-class approach to the hospitality curriculum as a means of increasing its efficiency and effectiveness. Specifically, the study provides an example of how hospitality faculty might utilize an experiential, in-class approach to integrate additional hospitality-specific content along with process and content issues for working in teams and team decision-making. The results of this study support the efficient and effective use of an experiential inclass teaching method. The value of this study is twofold: (1) it provides an initial test of this approach’s usefulness and (2) it provides a forum for continued conversations of how experiential approaches can be utilized to enhance and reinforce other hospitality content and managerial skills and to bridge the gap between vocational and liberal education outcomes.

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Voice communication systems such as Voice-over IP (VoIP), Public Switched Telephone Networks, and Mobile Telephone Networks, are an integral means of human tele-interaction. These systems pose distinctive challenges due to their unique characteristics such as low volume, burstiness and stringent delay/loss requirements across heterogeneous underlying network technologies. Effective quality evaluation methodologies are important for system development and refinement, particularly by adopting user feedback based measurement. Presently, most of the evaluation models are system-centric (Quality of Service or QoS-based), which questioned us to explore a user-centric (Quality of Experience or QoE-based) approach as a step towards the human-centric paradigm of system design. We research an affect-based QoE evaluation framework which attempts to capture users' perception while they are engaged in voice communication. Our modular approach consists of feature extraction from multiple information sources including various affective cues and different classification procedures such as Support Vector Machines (SVM) and k-Nearest Neighbor (kNN). The experimental study is illustrated in depth with detailed analysis of results. The evidences collected provide the potential feasibility of our approach for QoE evaluation and suggest the consideration of human affective attributes in modeling user experience.

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The South American Defense Council (CSD), created in March 2009 as a military coordinating body of the Union of South American Nations (UNASUR) demonstrates a growing trend among Latin American countries to approach matters of regional security independent of the United States. The CSD also indicates a maturation of democratic civil military relations in a region once dominated by authoritarian military regimes. The CSD aims to facilitate the exchange of information about regional defense policies, promote collaboration for disaster relief, and promote civil-military engagement. In less than a year it is hardly a tested entity, but the presence of 12 South American states coming together around security policy marks an important moment in the evolution of civil-military relations in the region. Brazil has taken on an important leadership role in the CSD, acting as a leader in recent regional peacekeeping efforts. As a geopolitical move, Brazil also sees a benefit in promoting good relationships with all countries of South america, given its common border with nine of them. Although the United States is not a member of the CSD, the organization's agenda of infromation exchange of defense policies, military cooperation, and capacity building, including disaster assistance and preparedness provide opportunities for greater collaboration. The CSD is not part of the Inter-American System created after the Second World War. It is unclear how its work will coincide with the OAS Committee on Hemispheric Security or its Secretariat for Multidimensional Security. The U.S. should view the CSD as a mechanism to promote joint initiatives that encourage democratic governance in the region.

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The Soviet Union's dissolution in December 1991 marks the end of the Cold War and the elimination of the United States' main rival for global political-economic leadership. For decades U.S. foreign policymakers had formulated policies aimed at containing the spread of Soviet communism and Moscow's interventionist policies in the Americas. They now assumed that Latin American leftist revolutionary upheavals could also be committed to history. This study explores how Congress takes an active role in U.S. foreign policymaking when dealing with revolutionary changes in Latin America. This study finds that despite Chavez's vitriolic statements and U.S. economic vulnerability due to its dependence on foreign oil sources, Congress today sees Chavez as a nuisance and not a threat to U.S. vital interests. Devoid of an extra-hemispheric, anti-American patron intent on challenging the United States for regional leadership, Chavez is seen by Congress largely as a threat to the stability of Venezuela's institutions and political-economic stability. Today both the U.S. executive and the legislative branches largely see Bolivarianism a distraction and not an existential threat. The research is based on an examination of Bolivarian Venezuela compared to revolutionary upheaval and governance in Nicaragua over the course of the twentieth century. This project is largely descriptive, qualitative in approach, but quantitative data are used when appropriate. To analyze both the U.S. executive and legislative branches' reaction to revolutionary change, Cole Blasier's theoretical propositions as developed in the Hovering Giant: U.S. Responses to Revolutionary Change in Latin America 1910- 1985 are utilized. The present study highlights the fact that Blasier's propositions remain a relevant means for analyzing U.S. foreign policymaking.