[pt] Vivemos em uma época marcada por grandes transformações tecnológicas e conseqüentemente por muitas mudanças subjetivas. Nos dias de hoje, é possível perceber o significativo aumento de usuários de celulares na nossa sociedade. O mercado multiplica-se rapidamente revelando um cenário em franca expansão. Este estudo objetiva, principalmente, investigar como os jovens da classe média do Rio de Janeiro lidam com questões como a obsolescência, o consumo e as freqüentes inovações tecnológicas no campo dos aparelhos celulares. Para alcançar esse objetivo, foi realizada uma pesquisa qualitativa com 15 jovens de ambos os sexos. Esses jovens tinham, em média, 26 anos de idade. Quase todos eram profissionais com nível superior e usuários assíduos de celulares há mais de 5 anos. As entrevistas foram realizadas on line, através do programa de conversação MSN Messenger. A análise dos depoimentos dos participantes revelou o papel central que os celulares vêm assumindo. A maioria dos entrevistados admite ter o celular por perto e ligado o tempo todo. No que se refere ao consumo de celulares, contudo, os depoimentos foram contraditórios. A maioria dos entrevistados fica com o mesmo celular um curto período de tempo, alegando os mais diferentes motivos para trocar de aparelho. Afirmam que se deve mudar de celular somente quando este pára de funcionar. Mesmo assim, trocam de aparelho muito antes do tempo previsto. As razões para esse comportamento estão, principalmente, no fato de eles se sentirem fortemente atraídos pelas freqüentes inovações tecnológicas dos aparelhos. / [en] We live in a time of ever-increasing technological changes. Nowadays, we can clearly see a significant growth in the number of cell phone users, which shows how fast the this market is expanding. The purpose of the present study was to find out how middle class young people deal with the obsolescence, consumption and constant innovations in cell phones. To reach this goal, a qualitative study was carried out with 15 young people, both male and female, whose average age was 26. Most of them were professionals and had a university degree. All had been intensively using cell phones for more than 5 years. The interviews were carried out on-line through the MSN Messenger chat program. The results showed that cell phones play a central role in their lives. Most of the interviewees admitted that they always carry their cell phones and never switch them off. However, in what concerns their consumption, the participants` statements were contradictory. Most of the interviewees keep the same model of cell phone for a short period of time, providing a host of different reasons for changing it. They all say that a new model should be bought only in case of malfunction of the previous one. However, all of them admit changing phones long before this happens. And the reasons for this behavior lie in the fact that they are attracted by the constant technological innovations.

This thesis investigates drivers willingness to engage with a mobile phone while driving. Many studies have looked into the effects on driving performance that can result from phone usage, but few studies have directly considered what can encourage or inhibit phone engagement behaviours in the first place. An initial exploratory study (Study 1) was conducted, for which a photo elicitation interview (N=20) was designed and implemented. This aimed to find the extent to which factors influencing phone use transferred from out of the car to the driving environment. In particular, the study aimed to explore whether the driving environment could be considered unique. The results indicated that the high demands placed on the driver by the road environment clearly distinguished it from the other environments and the reported propensity to use a phone seemed to reflect this. Only factors which either changed the level of attention required by the task, such as a change in task demand as a result of changes in the traffic environment, had any substantial influence on willingness to engage. Driving may not be unique in terms of the overall factors influencing phone use but it is unique in the extent to which this particular factor seems to have such a strong bearing on interaction. Building on findings from Study 1, that the demand and attention required seemed to influence willingness to engage, it was noted that Fuller s (2005) Task Capability Interface model would serve as a useful framework for the remainder of the thesis. This model suggests that driver behaviour is dictated by the level of task difficulty perceived; an interaction between task demand and capability. Therefore, the effects these two elements might have on willingness to engage with mobile phones while driving were tested separately in the two remaining studies. Previous research suggested that task demand should comprise a combination of roadway demand and the intended phoning task. Study 2, therefore, experimentally tested the extent to which road demand and phone function intended to be used influenced drivers decisions to engage with their phone. Participants (N=20) viewed video clips of real road environments of varying demand. Rating scales were used by participants to rate their willingness to engage with various phone functions according to the scenario they had just viewed. It was found both roadway demand and phone functionality affected willingness to engage with a mobile phone whilst driving. There was a higher propensity to engage in phone use in road environments perceived to have a lower demand and lower propensity to engage in phone use in the highest demand scenarios. Answering a call was the most likely function to be engaged with by the participants and sending a text message was the least likely. The final study investigated how capability (comprising both phone and driving capability) influenced willingness to engage. Participants (N=40) were required to drive in a simulator under two conditions, simulated low and high road demand. Their willingness to interact with their phones, when faced with a number of phone tasks, was then observed. It was found that driving capability had an effect on willingness to engage in high demand scenarios with the less capable, novice, drivers having a higher propensity to engage with placing a call, sending a text message and reading a text message than the more experienced drivers. Novice drivers were willing to engage with some functions on their phone at possibly inappropriate times. It was further found that, in the simulated low demand road environment, phone capability influenced willingness to engage, with those who were more capable at placing a call and sending a text message found to be more willing to engage with these functions. The research reported in this thesis represents the first attempt in the literature to study, in depth, the factors which can influence phone engagement behaviour while driving. Novel contributions include investigating if factors influencing phone use transferred from out of the car to the driving environment. Further novel contributions included whether the phone function and road demand interact to influence willingness to engage and whether capability can affect phone engagement behaviour while driving. Extending the model developed by Fuller, the thesis offers an original model that describes the factors affecting phone engagement behaviour while driving. Suggestions are proposed for how the findings presented in this thesis can effectively be used and how future work should build on these initial foundations.

行動電話基地台設施近年來已逐漸成為一另類「鄰避設施」，然而其對於周遭不動產價值減損程度如何，國內尚缺乏相關研究。本文首先採用問卷調查法以瞭解居民對於行動電話基地台的相關看法及居民認知行動電話基地台對於住宅價格的影響程度；其次運用特徵價格法對於實際不動產成交價格資料，以迴歸分析方式驗證行動電話基地台對周遭住宅價格是否有影響及其影響程度。 研究結果發現無論問卷調查或特徵價格實證分析皆顯示行動電話基地台對周遭住宅價格影響是負面的，問卷調查的受訪者普遍對基地台設施存有負面觀感，且有高達54.4﹪的受訪者認為該設施對周遭住宅價格的負面影響程度在10﹪以上；而在特徵價格實證分析方面，研究地區內房屋所在樓層較高者（七樓以上）相較於較低者（七樓以下），其住宅價格更容易受到行動電話基地台設施的負面影響，而住宅價格因距離行動電話基地台遠近因素所受到折損程度平均約為2.35﹪，惟行動電話基地台設施之可視性因素對住宅價格的影響並不顯著。 / The cellular phone towers has become another NIMBY, although the absence of domestic research for how detract from real estate's value. The article first use the Questionnaire Investigation method’s way to realize that people’s opinion of cellular phone towers and cognition of the effective level of cellular phone towers on house’s price ; secondly use Hedonic Price Method on real estate's value, by using Regression Analysis’s way to prove the impact of cellular phone towers on house’s price . In which we found no matter Questionnaire Investigation or Regression Analysis both announces that the effective level of cellular phone towers on house’s price is negative, there are up to 54.4% of subjects involved in the survey though that the negative influence is above 10% ; on Hedonic Price Method’s way, the house whereabouts higher stairs on the area of researchs, its price is more easy effected by cellular phone towers than the lower one. And the house's price is effected by the distance of cellular phone towers that the average of detractive level is about 2.35%.Only the effect on cellular phone towers of the cause of visual by house price was not broad.

Made available in DSpace on 2016-04-26T18:17:31Z (GMT). No. of bitstreams: 1 Juliana Maria Constantino.pdf: 7783608 bytes, checksum: a834d832f6e196b4d29b2362500afbe3 (MD5) Previous issue date: 2008-10-14 / Diversity and popularization of the wireless equipment used for telephony, listening to music and personal organization are grabbing attention to these mobile devices. The low prices, especially of mobile phones, require a critical study of their interfaces, as it has became one of the cores of contemporary communication. The goal of this research is to investigate models of navigation adopted by products that access the Internet, developed for portable devices - be it web sites, or applications - with focus on the complexity of the communication system involved in this context and the methodology of development of these interfaces. The survey was conducted from a site developed for the launch of a product's auto industry, whose presence on-line started with a website exclusively "mobile" in August 2007. In this analysis, were considered: the launch of the car, study of public and habits of interaction with mobile services, creative strategy, information architecture / general guidelines of the interface and result. It was also part of the analysis the behavior of guidelines for interface in popular cel phones (low-cost) and in multifunctional models like multimedia phones, smartphones or the iPhone, considering the the heterogeneous Brazilian cellphone base (in terms of technical capability of equipment and plans pre and post-paid), which reflects the relationship among holder-interaction-network. The theoretical North of the research was " Towards a Philosophy of Photography " by Vilém Flusser and all the discussion happened in the light of the latest literature on the information architecture, design, interface and communication theory's post-media: Lev Manovich, William Mitchell , Manuel Castells, Andre Lemos, Giselle Beiguelman and Lucia Santaella, among other no less important. The analysis resulted in a critical view on the situations of use of different features of wireless devices, focusing mainly in the creative process involved on the construction of such interfaces - considering legacies of the fixed Internet - and the relationship between public and equipment / A diversidade e popularização dos equipamentos sem-fio (wireless) usados para telefonia, consumo de música e organização pessoal pedem atenção a esses dispositivos móveis. O barateamento, especialmente dos celulares, demanda um estudo crítico de suas interfaces, haja vista que se tornaram um dos cernes da comunicação contemporânea. O objetivo desta pesquisa é investigar modelos de navegação adotados por produtos que acessam a internet desenvolvidos para dispositivos portáteis sejam eles websites ou aplicações , com enfoque na complexidade do sistema de comunicação envolvido neste contexto e na metodologia de desenvolvimento dessas interfaces. A pesquisa foi realizada a partir de um site desenvolvido para lançamento de um produto da indústria automobilística, cuja presença online começou com um site exclusivamente "mobile". Nesta análise, serão considerados: o contexto do lançamento do carro, a modelagem de público e o estudo de hábitos de interação "mobile" deste público, a estratégia criativa, a arquitetura de informação, as diretrizes gerais da interface e o resultado. Foram analisados também o comportamento das diretrizes de interface em celulares populares (de baixo-custo) e nos modelos de ponta ("smartphones" e telefones multimídia), além dos modelos multifuncionais, como o Iphone, levando em consideração a base heterogênea de celulares no Brasil (em termos de capacidade técnica de aparelhos e planos pós e pré-pagos), que reflete na relação interativa possuidoraparelho- rede. A pesquisa tem como norte teórico a "Filosofia da Caixa Preta", de Vilém Flusser, e a toda discussão se deu à luz de bibliografia recente sobre arquitetura da informação, design de interface e teoria da comunicação na era pós-midiática: Lev Manovich, William Mitchell, Manuel Castells, Andre Lemos, Giselle Beiguelman e Lúcia Santaella, entre outros não menos importantes. A análise resultou em uma visão crítica sobre as situações de uso das diversas funcionalidades de dispositivos sem-fio, focando principalmente o processo criativo envolvido na construção das interfaces considerando heranças da Internet fixa e a relação do público com esses equipamentos

Recently, Thoma and Bebeau (2008) reported moral judgment developmental trends among various samples of undergraduates and graduates where increases in Personal Interests reasoning and decreases in Postconventional reasoning were observed. In an attempt to explain such trends, they cited recent trends in increased narcissism among college students (Twenge, Konrath, Foster, Campbell, & Bushman, 2008) and also noted that certain types of technological devices (i.e. social networking websites, cell phones, etc.) may have adverse effects social decision-making and self-presentation. The current study, therefore, addresses the relationships among moral judgment development, narcissism, and electronic media and communication devices (EMCD's). Analyses support that the extent of EM CD usage, as well as the reasons for usage, contribute to decreased Postconventional reasoning, but have a negligible effect on Personal Interests reasoning.

Denna rapport är en sammanställning av en litteraturstudie som undersöker trådlös nätverksuppkoppling (WLAN) ombord på fartygsbryggor. Samhället utvecklas hela tiden och användandet av enheter med tillgång till internet ökar ständigt. Arbetets syfte var att undersöka den trådlösa uppkopplingens positiva och negativa effekter samt för- respektive nackdelar. En litteratursökning genomfördes och baserades tillsammans med analysen på en mindmap. Resultatet visar flera negativa effekter genom att vara uppkopplad på fartygsbryggan. De slutsatser som arbetet kom fram till var att ökad tillgänglighet leder till ökat användande. Användandet påverkar individens fokus och hälsa negativt. Det kan även påverka sömnen negativt där både mängd och kvalitet försämras. Det positiva som WLAN kan bidra till är ett ökat välmående för individen samt att underlätta arbetet genom sammankoppling av enheter. Det är viktigt att optimera arbetsplatsen så att hälsorisker minimeras. WLAN har överlag en negativ effekt på bryggvakten. Möjligheterna som kommer med WLAN är få i förhållande till riskerna. / This report describes a literature study that examines the wireless local area network (WLAN) aboard the vessels bridge. Society is constantly evolving and the usage of electronic devices with access to the Internet is constantly increasing. The aim of the work was to investigate the wireless connection´s advantages, disadvantages, as well as its positive and negative effects. A literature review was performed and together with the analysis based on a mind map. The results suggests that more negative effects than positive comes with being connected on the vessel´s bridge. The conclusions that can be drawn are that increased availability leads to increased usage. This use affects the individual's focus and health negatively. It can also affect sleep negatively where both quantity and quality deteriorates. The positive aspects WLAN can contribute to are increased well-being of the individual as well as facilitate the work by linking devices together. It is important to optimize the workplace so that health risks are minimized. WLAN generally has a negative effect on the bridge watch. The possibilities that come with WLAN are few in relation to the risks.

196f. / Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2013-04-10T17:24:12Z No. of bitstreams: 1 Disser Denize Silva.pdf: 10999494 bytes, checksum: 148c85bcd29a326b717b5cf519d96f68 (MD5) / Approved for entry into archive by Rodrigo Meirelles(rodrigomei@ufba.br) on 2013-04-22T19:25:07Z (GMT) No. of bitstreams: 1 Disser Denize Silva.pdf: 10999494 bytes, checksum: 148c85bcd29a326b717b5cf519d96f68 (MD5) / Made available in DSpace on 2013-04-22T19:25:07Z (GMT). No. of bitstreams: 1 Disser Denize Silva.pdf: 10999494 bytes, checksum: 148c85bcd29a326b717b5cf519d96f68 (MD5) Previous issue date: 2009 / As estações radiobase de telefonia celular têm sido estudadas quanto aos potenciais impactos à saúde ambiental. Esta dissertação tem como objetivo, analisar os condicionantes para licenciamentos de estações radiobase de telefonia celular. Para atingir este objetivo, analisou-se as condicionantes para licenciamento de estações radiobase de telefonia celular no município de Salvador, comparando-os a quatro municípios brasileiros de grande porte e ao Distrito Federal, bem como a análise da percepção dos atores que, direta ou indiretamente, se relacionam com o tema em estudo e participam do processo de licenciamento das ERBs. Utilizou-se como estratégias metodológicas,a pesquisa qualitativa em duas etapas. Na primeira, a pesquisa documental e na segunda etapa a pesquisa de campo realizada por meio de entrevista semi-estruturada, para analisar a percepção de profissionais, representantes de órgãos, operadoras e da população que reside e/ou trabalha até 400m da ERB. A legislação analisada mostrou fragilidades. Destacam-se ausências de condicionantes como audiência pública e limites restritivos para densidade de potência e distanciamento.A pesquisa realizada em campo indicou que a maioria da população entrevistada acredita ter sido prejudicada com a instalação das ERBs de telefonia celular próxima às suas residências. Dessa forma, os resultados levam ao entendimento de que há necessidade de se adotar condicionantes mais restritivos para o licenciamento de estações radiobase, de modo a contemplar o princípio da precaução. / Salvador

Orientador: Gilmar Barreto / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação / Made available in DSpace on 2018-08-19T04:13:27Z (GMT). No. of bitstreams: 1 Ismail_SamiraMuhammad_M.pdf: 2532705 bytes, checksum: 03e951dc2de52c3cd47657715b442a98 (MD5) Previous issue date: 2011 / Resumo: Os dispositivos móveis podem ajudar o homem em várias atividades. Com adaptações no uso e nos programas, podem também apoiar alunos e educadores no ambiente educacional. Estas mudanças podem introduzir novos conceitos e poderosas ferramentas que, ao mesmo tempo, ampliam as possibilidades e a complexidade destes ambientes. No entanto, a limitada capacidade de acesso dos educadores e alunos a estes ambientes virtuais de aprendizagem (AVA), ao contrário do que se pretende, pode ampliar a exclusão cultural e social. Este trabalho propõe a utilização do serviço de mensagens tipo SMS (Short Message Service) para modelar um AVA de baixo custo, uma estrutura que inclua estas comunidades e que, com criatividade, facilite a interação entre alunos, professores e os recursos tecnológicos, dentro e fora da sala de aula, ampliando as atividades colaborativas e as avaliações formativas. Um modelo em que o custo total de propriedade seja viável e de implantação imediata / Abstract: The mobile devices can help human being in several activities. With changes in procedures and softwares those solutions can support students and teachers in educational environment. At the same time, those changes can introduce new concepts and powerfull tools that expand the scope and complexity of those environments. The teacher and students constraints to access those Learning Virtual Environments (LVE), can make the cultural and social exclusion worse, in opposite way that it is supposed to be. This work proposes the use of SMS (Short Message Services) to model a low cost LVE, a specific solution to include those communities and, with creativity, turn it easier to interact students, teachers and the resources, inside and outside the classroom, improving the collaborative activities and formative assessment. A specific model where the TCO (total cost of ownership) will be feasible and can be up and running immediately / Mestrado / Automação / Mestre em Engenharia Elétrica

The theme of the thesis is an analysis of current mobile operator selected services. This work focuses on the present and the future development of mobile internet connection. The aim is to analyze existing services at Telefónica Czech Republic and The work is divided into several parts. The first part focuses on the selection of a particular operator. I described at al. Czech Republic and Telefónica, which is the first integrated operator in the Czech Republic. The company currently operates more than seven million mobile numbers and fixed lines, making it one of the leading providers of fully converged services in Europe. I focused on the organizational structure of the company and its description. The second part is historical, describes the history of mobile networks in the CR, the history of mobile communications in the data and the development of mobile connections in the country. The third part is theoretical, describes al. Czech Republic Telefonica SpA in terms of services it offers in this section is also described ISO certification, EMS policy and business principles. Are described voice and mobile services, mobile data services and connectivity technologies and different types of technologies (GSM, GPRS, EDGE, UMTS, HSDPA, HSPA + and LTE). Another section includes the development of mobile connections in the CR, the current situation where Telefónica provides 3G connection for almost 71% of the population and the current state of commercial LTE network. I tried to describe the current mobile platforms, and even telecommunications market in the Czech Republic. The penultimate section specifies the geographic traffic distribution network operator and the last part, I dealt with the analysis and comparison services. The total contribution of the thesis see the approach and evaluation of existing services together. Telefónica Czech Republic, as, which is one of the largest telecommunications companies in the world.

A doubly resonant cavity was used to search for nonlinear radiofrequency (RF) energy conversion in a range of biological preparations, thereby testing the hypothesis that living tissue can demodulate RF carriers and generate baseband signals. The samples comprised high-density cell suspensions (human lymphocytes and mouse bone marrow cells); adherent cells (IMR-32 human neuroblastoma, G361 human melanoma, HF-19 human fibroblasts, N2a murine neuroblastoma (differentiated and non-differentiated) and Chinese hamster ovary (CHO) cells) and thin sections or slices of mouse tissues (brain, kidney, muscle, liver, spleen, testis, heart and diaphragm). Viable and non-viable (heat killed or metabolically impaired) samples were tested. Over 500 cell and tissue samples were placed within the cavity, exposed to continuous wave (CW) fields at the resonant frequency (f) of the loaded cavity (near 883 MHz) using input powers of 0.1 or 1 mW, and monitored for second harmonic generation by inspection of the output at 2f. Unwanted signals were minimised using low pass filters (</= 1 GHz) at the input to, and high pass filters (>/= 1 GHz) at the output from, the cavity. A tuned low noise amplifier allowed detection of second harmonic signals above a noise floor as low as -169 dBm. No consistent second harmonic of the incident CW signals was detected. Therefore, these results do not support the hypothesis that living cells can demodulate RF energy, since second harmonic generation is the necessary and sufficient condition for demodulation.