Made available in DSpace on 2014-06-11T19:28:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-08-08Bitstream added on 2014-06-13T18:35:03Z : No. of bitstreams: 1 araujo_d_me_botfca.pdf: 601834 bytes, checksum: b2dcd054b52c2b2dc71f5faddbd60de4 (MD5) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / Empresa Privada / Em pomares de citros, o controle químico do agente causal da mancha (ou pinta) preta tem merecido destaque pelo excessivo número de pulverizações, elevando sobremaneira os custos de produção. A busca por melhorias na eficiência das pulverizações e reduções na quantidade dos produtos fitossanitários já tem sido realizada, mas os resultados dessa prática ainda não são consistentes para que possa ser aplicado em escala comercial. Sendo assim, esse trabalho objetivou avaliar a interferência da redução nos volumes de pulverização, no controle da mancha preta em frutos cítricos, bem como o efeito do crescimento dos frutos e da precipitação pluviométrica, sobre a deposição da calda com a aplicação de diferentes volumes. Três experimentos foram conduzidos em pomar comercial com plantas de 16 anos de idade, da variedade Valência e antecedentes comprovados da doença, durante as safras 2005/2006 e 2006/2007. Foram avaliados os depósitos das pulverizações sobre os frutos utilizando-se diferentes volumes de calda (experimento 1), a incidência e severidade da doença em duas épocas distintas (experimento 2), bem como a queda dos frutos do início da maturação até a colheita e a produção (experimento 3). Os tratamentos consistiram de três volumes de calda, 3,5; 4,5 e 8,5 L.planta-1, aplicados pelo turbopulverizador Arbus 2000/Export com ramal especial de bicos, utilizando-se fungicidas e períodos recomendados para o controle da doença, em um total de quatro pulverizações. A quantificação dos depósitos das pulverizações foi por espectrofotometria (íon cobre metálico), após as pulverizações e, da mesma forma, os resíduos ao final dos intervalos entre aplicações. A amostragem dos frutos foi realizada em três alturas (baixo, médio e alto) da planta, na região entre plantas da linha de plantio, com acompanhamento do crescimento dos frutos e... / The chemical control of Guignardia citricarpa has earned prominence for the high number of sprays, increasing the production costs excessively in citrus orchards. The search for improvements in the spray efficiency and reductions in the amount of agrochemicals, already has been accomplished, but the results of that practice are not still consistent for they be applied in commercial scale. For this, the objetives of the present research was to evaluate the interference of reduction spray volumes in citrus black spot control on fruits, as well as, the fruits growth and rainfall effects, in spray deposition with application of different spray volumes. Three experiments were carried out in commercial citrus orchard with proved antecedents of the disease and plants of sixteen years old of the variety Valencia, in 2005/2006 and 2006/2007 agricultural season. The spray deposition on fruits using different spray volumes (experiment 1), the incidence and severity of the disease in two different times (experiment 2), as well as the fruit drop of the beginning fruit maturation until the harvest and the production (experiment 3), were evaluated. The treatments consisted of three spray volumes: 3,5; 4,5 and 8,5 litres.plant-1, applied by one airblast sprayer (model Arbus 2000/Export) with special manifold of hydraulic nozzles and check treatment (without spray) in the second season. Fungicides and recommended periods for ...(Complete abstract click electronic access below)

Resumo: Em pomares de citros, o controle químico do agente causal da mancha (ou pinta) preta tem merecido destaque pelo excessivo número de pulverizações, elevando sobremaneira os custos de produção. A busca por melhorias na eficiência das pulverizações e reduções na quantidade dos produtos fitossanitários já tem sido realizada, mas os resultados dessa prática ainda não são consistentes para que possa ser aplicado em escala comercial. Sendo assim, esse trabalho objetivou avaliar a interferência da redução nos volumes de pulverização, no controle da mancha preta em frutos cítricos, bem como o efeito do crescimento dos frutos e da precipitação pluviométrica, sobre a deposição da calda com a aplicação de diferentes volumes. Três experimentos foram conduzidos em pomar comercial com plantas de 16 anos de idade, da variedade Valência e antecedentes comprovados da doença, durante as safras 2005/2006 e 2006/2007. Foram avaliados os depósitos das pulverizações sobre os frutos utilizando-se diferentes volumes de calda (experimento 1), a incidência e severidade da doença em duas épocas distintas (experimento 2), bem como a queda dos frutos do início da maturação até a colheita e a produção (experimento 3). Os tratamentos consistiram de três volumes de calda, 3,5; 4,5 e 8,5 L.planta-1, aplicados pelo turbopulverizador Arbus 2000/Export com ramal especial de bicos, utilizando-se fungicidas e períodos recomendados para o controle da doença, em um total de quatro pulverizações. A quantificação dos depósitos das pulverizações foi por espectrofotometria (íon cobre metálico), após as pulverizações e, da mesma forma, os resíduos ao final dos intervalos entre aplicações. A amostragem dos frutos foi realizada em três alturas (baixo, médio e alto) da planta, na região entre plantas da linha de plantio, com acompanhamento do crescimento dos frutos e... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The chemical control of Guignardia citricarpa has earned prominence for the high number of sprays, increasing the production costs excessively in citrus orchards. The search for improvements in the spray efficiency and reductions in the amount of agrochemicals, already has been accomplished, but the results of that practice are not still consistent for they be applied in commercial scale. For this, the objetives of the present research was to evaluate the interference of reduction spray volumes in citrus black spot control on fruits, as well as, the fruits growth and rainfall effects, in spray deposition with application of different spray volumes. Three experiments were carried out in commercial citrus orchard with proved antecedents of the disease and plants of sixteen years old of the variety Valencia, in 2005/2006 and 2006/2007 agricultural season. The spray deposition on fruits using different spray volumes (experiment 1), the incidence and severity of the disease in two different times (experiment 2), as well as the fruit drop of the beginning fruit maturation until the harvest and the production (experiment 3), were evaluated. The treatments consisted of three spray volumes: 3,5; 4,5 and 8,5 litres.plant-1, applied by one airblast sprayer (model Arbus 2000/Export) with special manifold of hydraulic nozzles and check treatment (without spray) in the second season. Fungicides and recommended periods for ...(Complete abstract click electronic access below) / Orientador: Carlos Gilberto Raetano / Coorientador: Hamilton Humberto Ramos / Banca: Sarita Leonel / Banca: Marcel Bellato Spósito / Mestre

In the current globalizing society, teachers are provided opportunities to move across their national borders to seek learning, professional development, and working opportunities. Technology-related professional development is particularly valued for teachers' sojourn to the technology intensive cultures. This qualitative cross-case study explored the K-12 Chinese language teachers' changes of teachers' application and perspective toward educational technology in cross-cultural teaching context through the lens of transformative learning theory. The qualitative data is collected from the interviews with 20 teacher participants in the four stages of cross-cultural sojourning: pre-departure, currently sojourning, post-sojourn, and immigrated. A qualitative cross-case analysis is conducted to compare the characteristics of teachers in different cases, and developed the complete process of the cross-cultural technology adoption and perspective. Factors contributed to the changes are also identified. Five issues related to the process are discussed. Implications and future directions were also included.

This paper argues that the technology life cycle literature is confused and incomplete. This literature is first reviewed with consideration of the related concepts of the life cycles for industries and products. By exploring the inter-relationships between these, an integrated view of the technology life cycle is produced. A new conceptualization of the technology life cycle is then proposed. This is represented as a model that incorporates three different levels for technology application, paradigm and generation. The model shows how separate paradigms emerge over time to achieve a given application. It traces the eras of ferment and incremental change and shows how technology generations evolve within these. It also depicts how the eras are separated by the emergence of a dominant design, and how paradigms are replaced at a technological discontinuity. By adopting this structure, the model can demarcate the evolution of technologies at varying levels of granularity from the specific products in which they may be manifest to the industries in which they are exploited. By taking technology as the unit of analysis the model departs from previous work, which has adopted a product-based perspective predominantly. The paper discusses the managerial and research implications associated with the technology life cycle, and indicates how these inform future research directions. As well as contributing to academic knowledge, the results of this research are of value to those who make decisions about the development, exploitation and use of technology including technology developers, engineers, technologists, R & D managers, and designers.

<p>In service-oriented architecture, services can communicate and share data among themselves. This thesis presents a solution that allows detecting several types of data leakages made by authorized insiders to unauthorized services. My solution provides role-based and attribute-based access control for data so that each service can access only those data subsets for which the service is authorized, considering a context and service’s attributes such as security level of the web browser and trust level of service. My approach provides data protection in transit and at rest for both centralized and peer-to-peer service architectures. The methodology ensures confidentiality and integrity of data, including data stored in untrusted cloud. In addition to protecting data against malicious or curious cloud or database administrators, the capability of running a search through encrypted data, using SQL queries, and building analytics over encrypted data is supported. My solution is implemented in the “WAXEDPRUNE” (Web-based Access to Encrypted Data Processing in Untrusted Environments) project, funded by Northrop Grumman Cybersecurity Research Consortium. WAXEDPRUNE methodology is illustrated in this thesis for two use cases, including a Hospital Information System with secure storage and exchange of Electronic Health Records and a Vehicle-to-Everything communication system with secure exchange of vehicle’s and drivers’ data, as well as data on road events and road hazards. </p><p>To help with investigating data leakage incidents in service-oriented architecture, integrity of provenance data needs to be guaranteed. For that purpose, I integrate WAXEDPRUNE with IBM Hyperledger Fabric blockchain network, so that every data access, transfer or update is recorded in a public blockchain ledger, is non-repudiatable and can be verified at any time in the future. The work on this project, called “Blockhub,” is in progress.</p>

二十一世紀是講求通路效率及服務的年代，半導體材料及設備通路商在產業中所扮演的角色越趨重要，加上網際網路與資訊科技的蓬勃發展，對於企業而言，如何應用資訊科技技術以改善對顧客的服務並增加顧客的滿意度，已經成為每個成長中的企業所重視的課題，而介於半導體上游原物料及設備製造商與下游相關半導體製造商間的通路商，主要即在取得原廠的銷售代理權並整合銷售及售後服務等工作，將代理的產品透過服務達到加值，使得上游製造商可以專注於材料及設備的研發與製造，而通路商本身則透過對下游半導體製造業提供良好的服務品質，以創造下游顧客的滿意度，進而提高顧客的忠誠度。因此，如何透過資訊科技的應用及優越的服務品質，來提升顧客的滿意度，進而使顧客具有忠誠度，已經成為以強化整體銷售服務來創造競爭力的通路商所必須重視的課題。 本研究即在探討半導體材料及設備通路產業之資訊科技應用對於服務品質及顧客滿意度之影響，更進一步探討服務品質對顧客滿意度與顧客忠誠度的影響。因此，本研究以國內半導體材料及設備通路商為研究對象，對其資訊科技應用、服務品質、顧客滿意度及顧客忠誠度做一整合驗證性的研究，並利用線性結構相關模式(LISREL)來探討四個構面間的關係，在半導體材料及設備通路產業中，所得到的結論如下： 一、資訊科技應用對服務品質有顯著的正向關係。 二、資訊科技應用對顧客滿意度不具顯著的正向關係。 三、服務品質對顧客滿意度有顯著的正向關係。 四、服務品質對顧客忠誠度不具顯著的正向關係。 五、顧客滿意度對顧客忠誠度有顯著的正向關係。 / 21 Century is the time for the emphasis on the channel efficiency and services and the roles of the semiconductor distributors in semiconductor material and equipments industry have become more and more important as a result. Due to the flourish developments in the internet and information technology, how to make good use of the information technology in order to improve the service for the customers and further increase the customers’ satisfaction is the crucial issue to any growing enterprises. The semiconductor distributors mainly act as the sale agents of the semiconductor material and equipments industry and provide the function to integrate the sale and after-sale services. By doing so, it has increased the value of the products through these services. In addition, it makes the manufacturers of the upstream in the semiconductor material and equipments industry concentrate on the R&D and manufacture field. On the other hand, the semiconductor distributors themselves have focally developed the customers’ satisfaction and further enhanced the customers’ loyalty by providing great service quality. Therefore, how to elevate the customers’ satisfaction and own the customers’ loyalty through the application of information technology and excellent service has become a must for the semiconductor distributors that would like to reinforce their aggregate sale services in order to have competition advantages. This paper addresses the influences of the information technology application on the service quality and the customers’ satisfaction of the semiconductor distributors in the material and equipments industry. Moreover, it further investigates the influences of the service quality on the customers’ satisfaction and the customers’ loyalty. This paper uses the semiconductor distributors in Taiwan as the research targets and makes a completed discussion on the information technology application, service quality, customers’ satisfaction and customers’ loyalty. Besides, there are following conclusions by using the linear structural model to exam the correlations among four aspects. 1.There is a significant positive correlation between information technology application and service quality. 2.There is an insignificant positive correlation between information technology application and customers’ satisfaction. 3.There is a significant positive correlation between service quality and customers’ satisfaction. 4.There is an insignificant positive correlation between service quality and customers’ satisfaction. 5.There is a significant positive correlation between customers’ satisfaction and customers’ loyalty.