Notre société doit faire face à de nombreux changements dans les modes de communication.L’émergence simultanée des terminaux nomades et des réseaux sociaux numériques permet désormais de partager des informations depuis presque n’importe quel lieu et potentiellement avec toutes les entités connectées.Le développement de l’usage des smartphones dans un cadre professionnel ainsi que celui des réseaux sociaux numériques constitue une opportunité, mais également une source d’exposition à de nombreuses menaces telles que la fuites d’information sensible, le hameçonnage, l’accès non légitime à des données personnelles, etc.Alors que nous observons une augmentation significative de la malveillance sur les plateformes sociales, aucune solution ne permet d’assurer un usage totalement maîtrisé des réseaux sociaux numériques. L’apport principal de ce travail est la mise en place de la méthodologie (SPOTLIGHT) qui décrit un outil d’analyse comportementale d’un utilisateur de smartphone et de ses contacts sur les différents médias sociaux. La principale hypothèse est que les smartphones, qui sont étroitement liés à leurs propriétaires, mémorisent les activités de l’utilisateur (interactions) et peuvent être utiles pour mieux le protéger sur le numérique.Cette approche est implémentée dans un prototype d’application mobile appelé SPOTLIGHT 1.0 qui permet d’analyser les traces mémorisées dans le smartphone d’un utilisateur afin de l’aider à prendre les décisions adéquates dans le but de protéger ses données / Our society is facing many changes in the way it communicates. The emergence of mobile terminals alongside digital social networks allows information to be shared from almost anywhere with the option of all parties being connected simultaneously. The growing use of smartphones and digital social networks in a professional context presents an opportunity, but it also exposes businesses and users to many threats, such as leakage of sensitive information, spamming, illegal access to personal data, etc.Although a significant increase in malicious activities on social platforms can be observed, currently there is no solution that ensures a completely controlled usage of digital social networks. This work aims to make a major contribution in this area through the implementation of a methodology (SPOTLIGHT) that not only uses the behaviour of profiles for evaluation purposes, but also to protect the user. This methodology relies on the assumption that smartphones, which are closely related to their owners, store and memorise traces of activity (interactions) that can be used to better protect the user online.This approach is implemented in a mobile prototype called SPOTLIGHT 1.0, which analyses traces stored in users’ smartphone to help them make the right decisions to protect their data

Submitted by Natalia Ojeda Mastronicola null (naty.mastronicola@yahoo.com.br) on 2016-03-14T01:37:28Z No. of bitstreams: 1 Dissertação Natalia Ojeda Mastronicola com ficha catalografica.pdf: 2397628 bytes, checksum: dcd1a480f60fabba28224e1631cdfc2c (MD5) / Approved for entry into archive by Ana Paula Grisoto (grisotoana@reitoria.unesp.br) on 2016-03-15T12:16:55Z (GMT) No. of bitstreams: 1 mastronicola_no_me_sjrp.pdf: 2397628 bytes, checksum: dcd1a480f60fabba28224e1631cdfc2c (MD5) / Made available in DSpace on 2016-03-15T12:16:55Z (GMT). No. of bitstreams: 1 mastronicola_no_me_sjrp.pdf: 2397628 bytes, checksum: dcd1a480f60fabba28224e1631cdfc2c (MD5) Previous issue date: 2016-02-15 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Neste trabalho, utilizamos aplicativos para smartphones e tablets (apps) no ensino da Aritmética, abordando tópicos como divisibilidade através da decomposição em fatores primos; mínimo múltiplo comum e máximo divisor comum. Este trabalho foi desenvolvido junto aos alunos do Ensino Fundamental. Além disso, tratamos também de temas normalmente não trabalhados no Ensino Básico como Teorema de Bézout e Função de Euler. O uso desses aplicativos aproveita-se dessa crescente tecnologia em poder dos alunos, auxiliando a aprendizagem de forma inovadora e tornando-a mais atraente. / In this work, we use some special apps for smartphones and tablets to teach Arithmetic, covering topics such as divisibility, prime decomposition of numbers, least common multiple and greatest common divisor. This study was developed with the students of elementary school. We also treat topics which are not normally worked in basic Education as Bézout's theorem and Euler function. We notice the use of these apps in the classroom brought more enthusiasm for students.

Submitted by Nadir Basilio (nadirsb@uninove.br) on 2017-01-24T19:04:27Z No. of bitstreams: 1 Aglae Regina Pessoa Giansanti Tavares.pdf: 1881514 bytes, checksum: c8f72a5c531f6a42ee561b059cf17cc8 (MD5) / Made available in DSpace on 2017-01-24T19:04:27Z (GMT). No. of bitstreams: 1 Aglae Regina Pessoa Giansanti Tavares.pdf: 1881514 bytes, checksum: c8f72a5c531f6a42ee561b059cf17cc8 (MD5) Previous issue date: 2016-12-05 / The Dental Record collects all necessary documentation so that the dental surgeon can adequately perform his work, as well as its importance in eventual judicial demands and cases of human identification. Once it is a complex document, not all dental surgeons dare to carry out the correct recording and filing of this information. On the other hand, there is a number of apps on market directed to the health area for several purposes, among them professional support is highlighted. Therefore, the objective of this research was to show how the dental-surgeons perceived the technology of the mobile devices (smartphones or tablets) and how it would aid in their work routine by analyzing an application for the registry of information of patients Because it was still an unexplored topic, 10 dentists, using a semi-structured questionnaire, conducted an in-depth interview, with the objective of understanding how this type of technology could contribute, taking into account its possibilities and current limits. It was, therefore, a qualitative, exploratory and descriptive research; and they analyzed responses using the Content Analysis technique. The results showed that according to the view of dentists, this technology could be useful in archiving and storing information. The conclusion was that 90% of the dental-surgeons interviewed said that the application helps in clinical practice and 10% consider this technology still limited to this function. / O Prontuário Odontológico reúne toda a documentação necessária para que o cirurgião-dentista desempenhe de forma adequada o seu trabalho, além da sua importância em eventuais demandas judiciais e em casos de identificação humana. Por ser um documento complexo, nem todos os cirurgiões-dentistas se propõem a realizar o correto registro dessas informações. Por outro lado, nota-se um mercado de aplicativos direcionado à área da saúde para diversas finalidades, dentre elas o apoio profissional. Portanto, o objetivo desta pesquisa foi apresentar como os cirurgiões-dentistas perceberam a tecnologia dos dispositivos móveis (smartphones ou tablets) e como seria o seu auxílio na rotina de trabalho pela análise de um aplicativo para o registro de informações de pacientes Por se tratar ainda de um tema pouco explorado, para esta pesquisa foi realizada uma entrevista em profundidade com dez cirurgiões-dentistas, utilizando um questionário semiestruturado, com o objetivo de compreender como este tipo de tecnologia poderia contribuir, levando-se em conta suas possibilidades e limites atuais. Tratou-se, portanto, de uma pesquisa qualitativa, exploratória e descritiva; as respostas foram analisadas pela técnica de análise do conteúdo. Os resultados apontaram que, segundo a visão dos cirurgiões-dentistas, esta tecnologia pode ser útil no registro de informações. Concluiu-se, enfim, que 90% dos cirurgiões-dentistas entrevistados afirmaram que o aplicativo auxilia na prática clínica e 10% considera esta tecnologia ainda limitada para essa função.

Marknaden för de allt populärare smarta telefonerna är splittrad. Detta innebär nya utmaningar för utvecklare. Vill man vara säker på att nå mer än hälften av sin målgrupp med en mobilapplikation så måste man utveckla för minst två plattformar, något som kostar både tid och pengar. Ett antal så kallade multiplattformsverktyg har tagits fram för att lösa detta problem. Dessa låter utvecklare använda en och samma kodbas för flera olika plattformar. Därmed slipper man dubbel- eller trippelarbetet som följer med native-utveckling. Men håller multiplattformsverktygen måttet? Denna granskning visar att prestandan och upplevelsen vid användning blir sämre, men tidsvinsten är potentiellt stor. För små och mellanstora projekt där prestandan är underordnad utvecklingstid, kostnad och räckvidd kan hybridverktyg vara ett lämpligt alternativ. / Smartphones are becoming more and more popular every day, but the market is divided. With this come new challenges for developers. To reach more then half the user base, you have to develop for at least two platforms, something that costs time and money. A number of multiplatform tools have been developed to try and offset this issue, and allows developers to code once, and deploy to many different types of systems. This could potentially mean that the extra work of creating native applications for multiple platforms could be avoided. But do these tools really live up to what they claim? This survey shows that the usage of these tools render the applications performance and user-experience lackluster, however, the potential time savings could be quite substantial. For small and mid-sized projects where performance is subordinate to the time of development, cost and user-base reach, these tools could be a suitable alternative.

Submitted by Filipe dos Santos (fsantos@pucsp.br) on 2016-12-06T18:28:59Z No. of bitstreams: 1 Mayara da Silva Peghim Cabral.pdf: 876430 bytes, checksum: f2ffc191ae9eb87e0d259fe469487ee5 (MD5) / Made available in DSpace on 2016-12-06T18:28:59Z (GMT). No. of bitstreams: 1 Mayara da Silva Peghim Cabral.pdf: 876430 bytes, checksum: f2ffc191ae9eb87e0d259fe469487ee5 (MD5) Previous issue date: 2016-11-08 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / It is known that the accession and incorporation of (ICTs) Information and Communication Technologies have changed worldwide, patterns of behavior, personal and family relationships. Particularly the smartphone, which is called a smart phone by its features such as, Internet access and operating systems, has been used by most of the population including children and adolescents. Daily its usage becomes increasingly personal and, through the application downloads, are used for various purposes making it difficult to measurement of parents. It is estimated that by 2018 in Brazil, the number of smartphones in use reaches the 268 million unit mark and therefore their use is increasingly present also within families. This qualitative research sought to identify with the parents and guardians of children and adolescents 7-17 years the types of ICT use in the home and characterize what are the risks that their children would face when using a smartphone and what they thought they understood for risk and protection on the internet. Through two different times, the survey was attended 52 parents who answered an online questionnaire containing 19 multiple choice questions and three open type questions analyzed descriptively. In a second moment, another 27 parents attended in person a lecture and left written testimony that were subjected to content analysis. As main results, stood out that all the family group makes use of ICTs at various moments of the routine and all members have their own smartphone. There is a concern about the risks present in the access and use of the devices because of its connection to the internet and it was evidenced that parents act in a passive way amid the use of smartphones. We emphasize the risks, but do not perceive the full potential that the use provides. The parents expect the school to be a mediator and exert information role in relation to education and ICT issues. With its interactive feature, the use of smartphones by children and adolescents suggests us that families as different professionals should play protective and active role with them through dialogues and discussions / É sabido que a adesão e incorporação das Tecnologias da Informação e Comunicação (TICs) alteraram no mundo todo, os padrões de comportamento, relacionamento pessoal e familiar. Particularmente o smartphone, que é chamado de aparelho inteligente por suas características como acesso à internet e sistemas operacionais, tem sido utilizado pela maioria da população incluindo crianças e adolescentes. Diariamente seu uso torna-se cada vez mais pessoal e através do download de aplicativos, são utilizados para diversas finalidades dificultando a medição dos pais. Estima-se que até 2018 no Brasil, o número de smartphones em uso atinja a marca de 268 milhões de aparelho e, portanto, sua utilização seja cada vez mais presente também no seio das famílias. Esta pesquisa qualitativa procurou identificar com os pais e responsáveis de crianças e adolescentes de 7 a 17 anos, os tipos de uso das TICs no lar e caracterizar quais seriam os riscos que os filhos se deparariam ao utilizar um smartphone e o que imaginavam que eles entendiam por risco e proteção na internet. Através de dois momentos diferentes, a pesquisa contou com a participação 52 pais que responderam um questionário online contendo 19 questões múltipla escolha e 3 questões do tipo abertas analisadas descritivamente. No segundo momento, outros 27 pais participaram presencialmente de uma palestra e deixaram depoimento por escrito que foram submetidos a análise de conteúdo. Como principais resultados, destacou-se que todo grupo familiar faz uso das TICs em vários momentos da rotina e todos os membros possuem seu próprio smartphone. Existe uma preocupação a respeito dos riscos presentes no acesso e uso dos aparelhos devido sua conexão com a internet e evidenciou-se que pais se colocam de forma passiva em meio a utilização dos smartphones. Ressalta-se os riscos, porém não percebem as potencialidades que o uso proporciona. Os pais esperam que a escola seja mediadora e exerça papel informativo em relação aos temas de educação e TIC. Com sua característica interativa, a utilização dos smartphones pelas crianças e adolescentes nos sugerem que tanto as famílias como diferentes profissionais devam desempenhar papel protetivo e ativo diante delas através de diálogos e discussões

Teknikens utveckling har gått fort fram de senaste åren, dagens smartphoneanvändare harmöjligheten att utföra ärenden som det för något år sedan krävdes en dator för. I denna studieutfördes en undersökning av mobila Internet-användares vanor och vad som är utmärkandeför mobilt internetanvändande. Tio respondenter förde loggbok där de fyllde i ett detaljeratschema för varje aktivitet, bl.a. var och vad de besökte. De tio respondenterna intervjuadessedan för att få ett djupare intryck av deras mobila internetavändande.Resultaten visar att den vanligaste platsen för surfning skedde i hemmet, respondenternatrodde dock att de skedde under transport. Oftast besöktes nyheter och den vanligastevaraktigheten var två minuter. Respondenterna hade en genomgående positiv attityd tillmobilt internet, ett flertal beskriver hur det förenklar deras vardag. En svaghet med mobiltinternet är enligt studien hastigheten och mottagningen. / Recent years technological development has been rapid, today smartphone users have theability to carry out matters that a few a years ago required a computer. In this study a surveywas conducted of how mobile internet user’s habits look, what are the characteristicsof mobile internet usage? Ten respondents kept a logbook in which they filled in a detailedschedule for each activity, among other things, where they were during the visit andwhat they visited. Later the ten respondents were interviewed to get a deeper impression ontheir mobile internet usage.The results show that the most common place for surfing was at home, although respondentsthought that they occurred during transport. The most visited sites were news; the mostcommon duration for an activity was two minutes. Respondents had a consistently positiveattitude towards the mobile internet; a number of them described how it simplifies things intheir day-to-day life. One weakness of the mobile internet that was mentioned a couple oftimes during the study was the speed but also the reception of the internet.

Made available in DSpace on 2016-12-12T20:22:52Z (GMT). No. of bitstreams: 1 George Henrique R Costa.pdf: 6148949 bytes, checksum: d0ba621121c8746a89db4a33dc576acd (MD5) Previous issue date: 2014-02-20 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / The popularization of devices with integrated GPS receiver has considerably boosted the use of digital road maps. For this reason, it is mandatory that they be accurate and up-to-date. The methods currently used to generate these maps photogrammetry and collaborative editing have low frequency of update because they depend on manual intervention. Thus, the need for an automated method for generating road maps is highlighted. The literature presents solutions that use trajectories of moving objects to find the center of the roads, but none of them is prepared for the continuous update of the roads and the refinement of the maps. Therefore, this work aims to propose a new method to find the center of the roads using trajectories provided by GPS receivers integrated in smartphones. It is assumed that the points that represent the center of the roads can be found through approximations provided by an evolutive algorithm such as the genetic algorithm. After that, these points are combined to generate the road map. However, the use of trajectories collected with smartphones provides some challenges, such as: elimination of data with bad accuracy, identification of the means of transport used and reduction of the volume of data processed. Thus, the objective of this work is to propose a structured method that cleans, analyzes and enriches data from smartphones to generate accurate road maps that can be continuously updated, using genetic algorithm. Test results indicate that the method is capable of generating maps with quality close to the reference ones. Based on the scenarios used to perform this comparison, the average difference between them is 2.26 meters. The tests also show that the periodic and continuous update of the map as proposed by the method is viable. / A popularização de dispositivos com receptor GPS integrado aumentou consideravelmente o uso de mapas rodoviários digitais. Por este motivo, é imprescindível que eles sejam acurados e atualizados. Os métodos atualmente utilizados para gerar estes mapas fotogrametria e edição colaborativa têm baixa frequência de atualização, pois dependem de intervenção manual. Desta forma, fica evidente a necessidade de um método automatizado para geração de mapas rodoviários. A literatura apresenta soluções que utilizam trajetórias de objetos móveis para encontrar o centro das vias, mas nenhuma delas está preparada para a atualização contínua das vias e o refinamento dos mapas. Sendo assim, este trabalho visa propor um novo método para encontrar o centro das vias utilizando trajetórias providas por GPS embutido em smartphones. Assume-se que os pontos que representam os centros das vias podem ser obtidos através de aproximações providas por um algoritmo evolutivo, tal como o algoritmo genético. A seguir, estes pontos são combinados para gerar o mapa rodoviário. Entretanto, o uso de trajetórias coletadas com smartphones proporciona alguns desafios, tais como: eliminação de dados com acurácia ruim, identificação do meio de transporte utilizado e redução do volume de dados processados. Portanto, o objetivo do presente trabalho é propor um método estruturado que limpe, analise e enriqueça dados obtidos por smartphones para gerar mapas rodoviários acurados e atualizados continuamente, utilizando algoritmo genético. Os resultados dos testes apontam que o método é capaz de gerar mapas de qualidade próxima a dos mapas de referência. Com base nos cenários utilizados para realizar esta comparação, a diferença média foi de 2,26 metros. Além disso, os testes também demonstram a viabilidade da atualização periódica e contínua dos mapas proposta pelo método.

Made available in DSpace on 2014-12-17T14:55:08Z (GMT). No. of bitstreams: 1 RafaelVA_DISSERT.pdf: 2442741 bytes, checksum: 62c146063870bfdf2de2466bb844dedf (MD5) Previous issue date: 2012-12-17 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico / Robots are present each time more on several areas of our society, however they are still considered expensive equipments that are restricted to few people. This work con- sists on the development of control techniques and architectures that make possible the construction and programming of low cost robots with low programming and building complexity. One key aspect of the proposed architecture is the use of audio interfaces to control actuators and read sensors, thus allowing the usage of any device that can produce sounds as a control unit of a robot. The work also includes the development of web ba- sed programming environments that allow the usage of computers or mobile phones as control units of the robot, which can be remotely programmed and controlled. The work also includes possible applications of such low cost robotic platform, including mainly its educational usage, which was experimentally validated by teachers and students of seve- ral graduation courses. We also present an analysis of data obtained from interviews done with the students before and after the use of our platform, which confirms its acceptance as a teaching support tool / Os rob?s est?o cada vez mais presentes nas mais diversas atividades da sociedade, por?m ainda s?o considerados equipamentos caros e restritos para poucas pessoas. Neste trabalho, propomos uma arquitetura de controle e um conjunto de t?cnicas que possibi- litam a constru??o de rob?s de baix?ssimo custo, al?m de diminuir a complexidade na sua montagem e programa??o. Um aspecto chave da arquitetura proposta ? o uso de interfaces de ?udio para controlar atuadores e ler sensores, permitindo assim o uso de qualquer dispositivo que produza sons como unidade de controle de um rob?. Tamb?m desenvolvemos ferramentas de programa??o baseadas em ambientes web que permitem o uso de computadores ou telefones celulares como unidades de controle de um rob?, que pode ser programado e controlado remotamente. O trabalho tamb?m contempla poss?veis aplica??es de tal plataforma rob?tica de baix?ssimo custo, incluindo principalmente o seu uso educacional, que foi validado experimentalmente, por professores e alunos de v?rias disciplinas de gradua??o. Apresentamos uma an?lise de dados de entrevistas realizadas com os alunos, antes e ap?s o uso da plataforma, que confirmam a sua aceita??o como ferramenta de apoio ao ensino

Submitted by Pedro Bruzzi (pedrobruzzi@yahoo.com.br) on 2014-10-14T03:24:32Z No. of bitstreams: 1 Dissertação Pedro Bruzzi.pdf: 1940934 bytes, checksum: 19915fe54062f52bca45a80bff4af449 (MD5) / Approved for entry into archive by Janete de Oliveira Feitosa (janete.feitosa@fgv.br) on 2014-10-14T18:50:27Z (GMT) No. of bitstreams: 1 Dissertação Pedro Bruzzi.pdf: 1940934 bytes, checksum: 19915fe54062f52bca45a80bff4af449 (MD5) / Approved for entry into archive by Marcia Bacha (marcia.bacha@fgv.br) on 2014-10-17T12:05:20Z (GMT) No. of bitstreams: 1 Dissertação Pedro Bruzzi.pdf: 1940934 bytes, checksum: 19915fe54062f52bca45a80bff4af449 (MD5) / Made available in DSpace on 2014-10-17T12:05:39Z (GMT). No. of bitstreams: 1 Dissertação Pedro Bruzzi.pdf: 1940934 bytes, checksum: 19915fe54062f52bca45a80bff4af449 (MD5) Previous issue date: 2013-03-26 / The use of Information Technologies Mobile and Wireless (TIMS) artifacts brings up a number of associated technological paradoxes, already identified in the literature. The increase in use of TIMS and its evolutions eventually enabled new types of uses and interactions. Based on theories about the existence of paradoxes associated with the use of technological equipment, especially TIMS, this study sought to verify the relationship between smartphones and professionals. Starting with a data collection through a structured survey, this research used quantitative analysis and aimed to determine the presence and measure the intensity of the technological paradoxes identified in the literature, upon statistical professional use of smartphones. Another issue observed in this study was the association between these technological paradoxes and also the identification of factors that could impact the perception of these paradoxes associated with smartphone use by professionals who use them. Data analysis has shown which of the fourteen technological paradoxes presented by Mick and Fournier (1998), Jarvenpaa and Lang (2005) and Mazmanian et al. (2006) were perceived by most respondents, highlighting the paradox of autonomy and addiction, which was experienced by more than 85% of those who responded to the survey. Based on the percentage of respondents who perceive the paradoxes and considering its strengths, this paper also presents a ranking of their forces, determined by the rate of relative paradox strength. This ranking provides in the top positions the following ambiguities: autonomy / addiction, engagement / disengagement and freedom / slavery, respectively. Another contribution of this study was that none of the analyzed paradoxes are statistically independent. Finally, conducting an ordinal logistic regression with the data collected led to the conclusion that only two of the paradoxes considered are impacted by the independent variables observed. / A utilização de artefatos de Tecnologias da Informação Móveis e Sem Fio (TIMS) traz consigo alguns paradoxos tecnológicos associados, já identificados na literatura. O aumento do uso de TIMS e suas evoluções acabam por permitir novos tipos de uso e interação junto aos usuários. Tendo como base teorias sobre a existência de paradoxos associados ao uso de equipamentos tecnológicos, mormente TIMS, este estudo buscou aprofundar a relação entre smartphones e profissionais. A partir da coleta de dados por meio de questionário estruturado, esta pesquisa utilizou a análise quantitativa e teve como objetivo determinar a presença e medir a intensidade dos paradoxos tecnológicos, identificados na literatura, quando do uso profissional de smartphones. Outro ponto observado no presente trabalho foi a associação estatística entre esses paradoxos tecnológicos e, ainda, a identificação de fatores que poderiam impactar a percepção desses paradoxos associados ao uso do smartphone pelos profissionais que os utilizam. A análise dos dados permitiu verificar quais dos quatorze paradoxos tecnológicos apresentados por Mick e Fournier (1998), Jarvenpaa e Lang (2005) e Mazmanian et al. (2006) foram percebidos por mais respondentes, com destaque para o paradoxo de autonomia e vício, que foi vivenciado por mais de 85% daqueles que responderam à pesquisa. Usando como base o percentual de respondentes que percebem os paradoxos tecnológicos e considerando suas intensidades, esta dissertação também apresenta um ranking das forças dos paradoxos, determinado pela taxa relativa da força dos paradoxos. Esse ranking traz nas primeiras posições as seguintes ambiguidades: autonomia / vício, engajamento / desengajamento e liberdade / escravidão, respectivamente. Outro apontamento dessa pesquisa foi que nenhum dos paradoxos analisados é estatisticamente independente. Por fim, a realização de uma regressão logística ordinal levou à conclusão que apenas dois dos paradoxos em questão sofrem impacto das variáveis independentes observadas. / The use of Information Technologies Mobile and Wireless (TIMS) artifacts brings up a number of associated technological paradoxes, already identified in the literature. The increase in use of TIMS and its evolutions eventually enabled new types of uses and interactions. Based on theories about the existence of paradoxes associated with the use of technological equipment, especially TIMS, this study sought to verify the relationship between smartphones and professionals. Starting with a data collection through a structured survey, this research used quantitative analysis and aimed to determine the presence and measure the intensity of the technological paradoxes identified in the literature, upon statistical professional use of smartphones. Another issue observed in this study was the association between these technological paradoxes and also the identification of factors that could impact the perception of these paradoxes associated with smartphone use by professionals who use them. Data analysis has shown which of the fourteen technological paradoxes presented by Mick and Fournier (1998), Jarvenpaa and Lang (2005) and Mazmanian et al. (2006) were perceived by most respondents, highlighting the paradox of autonomy and addiction, which was experienced by more than 85% of those who responded to the survey. Based on the percentage of respondents who perceive the paradoxes and considering its strengths, this paper also presents a ranking of their forces, determined by the rate of relative paradox strength. This ranking provides in the top positions the following ambiguities: autonomy / addiction, engagement / disengagement and freedom / slavery, respectively. Another contribution of this study was that none of the analyzed paradoxes are statistically independent. Finally, conducting an ordinal logistic regression with the data collected led to the conclusion that only two of the paradoxes considered are impacted by the independent variables observed.

La récente émergence des smartphones et des objets connectés a révolutionné le mode de vie des utilisateurs. Ces dispositifs ubiquitaires et équipés de plusieurs interfaces sans fil de communication, sont rapidement devenus indispensables dans la vie quotidienne des utilisateurs avec une utilisation intensive. Les interfaces sans fil de ces objets connectés émettent périodiquement des informations, certaines sont spécifiques aux utilisateurs et permettent par effet de bord d’identifier et de suivre leur déplacements. Le suivi des utilisateurs via les informations fortuitement émises par leurs périphériques sans fil se nomme le Wireless Physical Tracking. Les possibilités offertes par le Wireless Physical Tracking ont suscité un fort intérêt. Plusieurs applications se sont développés et ont permis d’apporter de l’innovation dans plusieurs domaines. Des sociétés de marketing l’utilisent afin de proposer à leurs clients de la publicité ciblée en fonction de leurs parcours dans leur zone d’activité. À une échelle plus grande, les villes intelligentes, ou smart-cities analysent le mouvement des utilisateurs afin d’apporter des services pour le confort des habitants. Enfin, dans le domaine de la recherche, les réseaux Ad-Hoc mobiles et autres DTN nécessitent de s’intéresser à cette pratique car l’étude de la mobilité des utilisateurs représentent un élément clé pour améliorer les performances de ce type de réseau. Cependant, la collecte de ces informations sans le consentement des utilisateurs ou sans qu’elles soient correctement protégées représentent un risque réel pour leur vie privée. C’est autour de ce contexte que s’articule cette thèse divisée en deux parties. La première présente les technologies PAN et WAN, l’état de l’art des méthodes de Wireless Physical Tracking et les contre mesures adoptés. La deuxième partie présentent les contributions de la thèse qui visent à proposer de nouvelles méthodes de suivi, analyser les performances de celles-ci face aux méthodes existantes et dans le cas particulier de l’application de crowd-localisation, à proposer des méthodes de suivi respectueuse de la vie privée. / The recent rise of smart-phones and connected objects has a deep impact its users lifestyle. In 2017, more than a billion and a half smart-phones were sold around the world. These ubiquitous devices, equipped with several wireless communication interfaces, have quickly become essential in the daily life of users with an intensive use. The wireless interfaces of these connected objects periodically transmit information on the network, some of which are user-specific and allow to identify and track their mobility. Tracking users by collecting the information generated by their wireless devices is called Wireless Physical Tracking. The opportunities offered by the Wireless Physical Tracking raised a lot of interest. Several applications have been developed and have brought innovation in several areas. Marketing companies use it to offer to their customers targeted advertising based on their movements in their area of activity. On a larger scale, Smart Cities or smart-cities analyse the movement of users in order to provide services for their inhabitants. Finally, in the field of research in mobile Ad-Hoc networks and DTNs, users mobility is a key element which need to be collected and analysed. However, the collection of this information without the consent of the users or without being properly protected induce a real risk to their privacy. It is around this context that this thesis is focused on. It’s divided into two parts. The first presents the PAN and WAN technologies, the state of the art of Wireless Physical Tracking methods and the adopted counter measures. The second part presents the contributions of the thesis which aims at developing new methods for Physical Tracking and analysing their performances compared to the existing methods. We first present an evaluate BPM, a bluetooth passive monitoring that allows to track the users of Classic Bluetooth device with a detection delay significantly lower than the methods previously used. We then focus on Bluetooth Low Energy and propose the use of a BLEB, a botnet of users tracking BLE objects with their smart-phones. Finally, we also focus on preserving users privacy through the proposal of PPCL, a privacy preserving crowdlocalisation method which allow to track users assets without being trackable.