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Tre centrala områden som de flesta organisationer frekvent arbetar mot att förbättra är effektivitet, kommunikation och kvalitet, begrepp som i denna uppsats fogats samman till vad vi kallar verksamhetsnytta. När organisationer tenderar att växa till sin storlek uppstår dock styrningssvårigheter och problem med att koordinera verksamheten i en gemensam riktning mot förenade målsättningar. Detta är något som vi framförallt uppmärksammat hos en del tjänsteföretag där man genom fältarbetare bedriver verksamhet utanför organisationens väggar och närmare slutkunder. Ett sätt att tackla problematiken är att öppna upp åtkomsten till interna informationssystem och vidare med hjälp av externa enheter kommunicera data in och ut ur organisationen. Detta för att förenkla informationsflöden, höja kvalitet och samtidigt rationalisera bort tidskrävande administration och dubbelarbete. Det blir idag vanligare att företag nyttjar handdatorer som verktyg för dessa ändamål, vilket ligger till grund för vårt intresse att i uppsatsen studera vilken potentiell verksamhetsnytta handdatorer kan bidra med. Som del i studien har vi därför genomfört empiriska undersökningar med fokus på fältarbetare och deras arbetsprocesser i tre olika tjänsteföretag vars bekantskap med handdatorer skiljer sig i olika utsträckning. Undersökningarna har gett oss en insyn i hur fältarbetare arbetar inom olika verksamheter både med och utan handdatorer som verktyg. Utifrån påträffade upptäckter har vi bland annat genom parallelldragningar verksamheterna emellan analyserat huruvida handdatorer påvekar, alternativt kan påverka, fältarbetarnas dagliga arbete. Det har visat sig att handdatorer har god potential att bidra med verksamhetsnytta men att det vid eventuellt införande också medför omfattande förändringsbehov. Vi kan genom studier av fältarbetarnas arbetsflöden peka på många områden där handdatorer kan vara lämpligt som medel för att komma tillrätta med problem och tillfredsställa behov. Dock medför det andra åtaganden i form av att anpassa sin verksamhet till den nya tekniken, något som kan komma att bekosta andra viktiga aspekter som exempelvis befintliga styrkor.

Ultra-Wideband technology has attracted interests of the researchers and commercial groups due to its advantage of high data rate, low complexity and low power consumption. The direct-sequence code division multiple access ultra wideband system (DS-CDMA UWB) is one of the proposal of IEEE 802.15.3a standard. By combing the power of both UWB and DS-CDMA techniques, the system could construct multiple access architecture using direct sequence method. In multi-user environment, the major problem of the receiver designing of conventional DS-CDMA system is multiple access interference(MAI). In DS-CDMA UWB system, the transmitted signal were interfered by inter-symbol interference(ISI) and neighbor symbol interference because of the multi-path channel characteristic. In this thesis, we use the training method to get the spreading waveform influenced by multi-path. Based on the information of spreading waveform, we use the block method to reformulate the received signal. We can separate the interference into multiple access interference and neighbor symbol interference. With Combining the interference cancellation, probabilistic data association (PDA) filter and sliding window techniques, we could eliminate the interference. In the computer simulation section, we compare the detection performance of sliding window PDA detector with conventional detector, and the simulation result shows that the improved PDA detector has better performance than others.

In the ever-changing environment, the mobile business market is burgeoning nowadays.In order to extend their management to end users, most enterprises decide to adopt mobility.During adoption, the greatest challenge happens to employees who are forced to make use of mobile equipment. What will affect employees when they are to accept new technological equipment? What is the implication of management? How should enterprises assist their employees when introducing new technology? Against the backdrop, more emphasis should be put on the study of user acceptance in order to enhance the benefits of new systems. At present, studies and theories concerning information technology acceptance are mostly applied to personal computers and systems, but seldom to mobility. In the filed of technology acceptance, numerous theoretical models have been established; however, each model is different from one another in constructs, variables and factors. As a result, based on the Unified Theory of Acceptance and Use of Technology (UTAUT), this Study discusses those factors that influence mobile staffers of the case study about PDA mobile system and equipment adoption. By means of literature collection and sorting, this Study adopts questionnaires to inspect a total of 185 mobile staffers of the case study. Because this Studyhas included all mobile staffers of the case study, the findings will make great contributions toboth the case study and relevant industries. According to the findings, Performance Expectancy, Social Influence, and Facilitating Conditions prove to be major influential factors of Behavioral Intention, while Effort Expectancy is not directly related to Behavioral Intention. In the analysis of moderators, this Study finds out that experience, educational background and age of users have apparent moderating effects on various paths of the model. As for the implication of management, in order to strengthen mobile staffers¡¦ intention to use new systems and to increase system benefits, enterprises should first promote the usage of new systems, communicate with and encourage their employees when introducing new systems. Second, enterprises should better the quality and quantity of vocational trainings.Third, new systems should be equipped with functions which help mobile staffers improve their performance. Fourth, new systems should be easy to use and learn according to different designs for usage. In addition, mobile staffers should realize those benefits which new systems offer, and have more opportunities to practice using new systems. Therefore, mobile staffers can have higher perception of Performance Expectancy, Effort Expectancy, Social Influence, and Facilitating Conditions concerning new systems. As for the analysis of moderators, this Study finds out that the variable of Social Influence has a strong indirect relationship to mobile staffers who are older, graduated from senior high school, or have worked for over 12 years. Hence, the management level should educate and encourage the above-mentioned staffers, in order to enhance their intention to use new systems.

El objetivo general del trabajo realizado fue desarrollar un sistema genérico de seguridad y privacidad de datos, que pudiera ser aplicable a un amplio espectro de aplicaciones colaborativas móviles. Se logró desarrollar un sistema de control de acceso a archivos basado en roles, usando herramientas de criptografía, tomando en cuenta los objetivos de seguridad, así como las características y restricciones propias de los sistemas colaborativos móviles. El sistema es capaz de mantener la privacidad, integridad y autenticación de los documentos (en realidad de cualquier archivo) usando un sistema de permisos de escritura y lectura. La privacidad de los documentos se asegura haciendo uso de la criptografía simétrica; la integridad y autenticación se obtiene mediante el uso de códigos de autenticación de mensajes basados en hash. Como resultado final se obtuvo una interfaz de servicios que puede ser reutilizada por distintas aplicaciones móviles, así como una aplicación gráfica que permite que los usuarios de un sistema colaborativo protejan y compartan sus archivos. El sistema funciona sobre PDA’s y Notebooks, con un desempeño adecuado para los usuarios y acorde a la capacidad de los dispositivos empleados.

Submitted by Edileide Reis (leyde-landy@hotmail.com) on 2014-10-29T11:50:42Z No. of bitstreams: 1 Paulo Luiz Coqueiro Andrade.pdf: 12029454 bytes, checksum: e425e8c354457a3d642b4751b748d690 (MD5) / Approved for entry into archive by Rodrigo Meirelles (rodrigomei@ufba.br) on 2015-05-30T14:00:31Z (GMT) No. of bitstreams: 1 Paulo Luiz Coqueiro Andrade.pdf: 12029454 bytes, checksum: e425e8c354457a3d642b4751b748d690 (MD5) / Made available in DSpace on 2015-05-30T14:00:31Z (GMT). No. of bitstreams: 1 Paulo Luiz Coqueiro Andrade.pdf: 12029454 bytes, checksum: e425e8c354457a3d642b4751b748d690 (MD5) / Nesta dissertação, foram discutidas as implicações espaciais do planejamento de Estado em áreas de reforma agrária, através do instrumento denominado Plano de Desenvolvimento Sustentável do Assentamento - PDSA. Esta investigação se fundamentou em uma análise escalar das ações de planejamento, buscando os princípios do Estado, em seu discurso e suas práticas , contrapondo-os com as questões trazidas pela parcela da sociedade civil diretamente relacionada com as lutas no campo. Na escala nacional, a pesquisa enfatizou o recorte temporal relativo aos dois mandatos do governo Fernando Henrique Cardoso, no marco político administrativo denominado Novo Mundo Rural. A experiência dos convênios, firmados pelo INCRA na Bahia, para elaboração dos PDSAs e demarcação topográfica, neste mesmo período, foi utilizada como referência para pesquisar a escala regional. Para a escala local, o foco foi dirigido para o trabalho de campo, pautando-se em três diferentes Planos da região Paraguaçu, elaborados pelo CRH/UFBA, para os assentamentos Baixão, Poço Longe e Santa Clara. Perpassando toda esta investigação, estruturou-se uma metodologia de análise dos Planos elaborados, do processo de planejamento e de sua implementação, fundamentada nas dimensões técnica e política, buscando compreender o fenômeno sob pontos de vista distintos, com interesse de tornar mais evidente o processo e seus resultados sem, contudo, pretender esgotar as possibilidades para sua explicação. Esta pesquisa atesta que tais Planos são imprescindíveis como ferramenta interinstitucional e de gestão local, para implementar em bases racionais e relacionais o desenvolvimento sustentável dos assentamentos. Não obstante, constatou-se heterogeneidade na sua elaboração, observando que a aplicação desses Planos se deu de forma incipiente e localizada, não condizendo com os esforços, nem com os recursos empregados.

FundaÃÃo de Amparo à Pesquisa do Estado do Cearà / Esta dissertaÃÃo buscou estudar o Programa de Desenvolvimento de Ãrea, PDA, uma metodologia de intervenÃÃo social implementada pela ONG VisÃo Mundial como um instrumento para geraÃÃo de trabalho, renda e para a promoÃÃo de desenvolvimento sustentÃvel em territÃrios caracterizados por alto grau de vulnerabilidade e exclusÃo social. O estudo refere-se ao PDA-Caucaia desenvolvido junto à comunidade indÃgena Tapeba, do municÃpio de Caucaia â CE, no perÃodo de 1995 a 2007. O objetivo à perceber os significados e as formas que emergem do contato entre a ONG, (cuja base discursiva localiza-se nos princÃpios da aÃÃo protestante) e os indÃgenas, em franco processo de afirmaÃÃo de sua identidade Ãtnica.

The controlling unit in building management system automation is a PLC. Every device in an installation is connected to the PLC. When a user wants to interact with a system an operator terminal, which is attached to a cabinet where the PLC is installed, is used. With this solution the user needs to be in front of the cabinet to interact with the system. Alarms do not get the user’s attention until the user checks the operator terminal. Using a solution where the communication with the PLC is done with a wireless interface would mean that the user interact with a system from a wider area. The solution should have the same functionality as today with the extension that the PLC should be able to contact the user if something is wrong in the installation. A PDA is used as a replacement for the operator terminal. This PDA uses two different techniques to communicate with the PLC. Bluetooth is used when the user is in the building and interacts with the system in a similar way to the operator terminals. GSM is used when the PLC needs to get the users attention by sending out alarms. With this solution the PDA can be used for several installations and thereby decrease cost. The project has turned out to be a success. The application that has been developed has improved a user’s interaction with a PLC.

When maintaining and configuring systems for Automatic Meter Reading (AMR) it is important to have access to powerful tools for on-site management of the connected metering devices. These tools include mobile phone applications which allow system operators to directly manage the devices through the physical interfaces they expose. This thesis report explores and describes the implementation of an application, the problems and choices which arose while developing it, like choice of platform and communication protocols. The result is an Android application that is capable of setting up communication variables on the metering devices and reprogram them with new firmware, amongst many other features.

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