The purpose of this project is to use Java technology to create an instant messenger application that could be used by any person who has the basic knowledge of working with a graphical user interface. The goal here is to develop an application that provides communication to users running different operating systems.

The aim of this thesis is to describe, by means of compounding disciplines of Computer Mediated Communication and Human-Computer Interaction, how interpersonal communication is transformed by the read recepit function which occurs in contemporary Instant Messaging applications. Besides the impact of the function itself on interpersonal communication, this thesis also explores the effect of other Awareness Cues on its acceptance and interpretation.

Indiana University-Purdue University Indianapolis (IUPUI) / Emotional communication is fundamental to everyday interaction. How well emotions are communicated is crucial to interpersonal relationships and individual well-being. Emotional communication in instant messaging (IM), however, can be challenging because of the absence of visual and aural nonverbal behaviors. Despite the growing number of technologically-focused solutions for supporting emotional communication in IM, limited design research has been done to study the actual users’ behaviors in communicating their emotion in IM and strategies they use to adapt emotional communication in this medium, with the purpose of establishing design solutions to support users' emotional communication. Connecting several bodies of HCI, design, and communication literature in the context of IM, this dissertation critically examines how users communicate emotion in IM and accordingly establishes user-centered multi-touch gesture based design solutions to support emotional communication in this medium. Understanding how users communicate their emotion in IM, the design issues, and corresponding design solutions help researchers and designers to support the user's emotional needs, resulting in the improvement of emotional communication strategies in IM.

Ο εικοστός πρώτος αιώνας θα μπορούσε εύκολα να χαρακτηριστεί ως τεχνολογικός αιώνας μιας και τα νέα δεδομένα μαρτυρούν αύξηση της χρήσης του ηλεκτρονικού υπολογιστή, του Διαδικτύου και κατ’ επέκταση των κοινωνικών δικτύων. Κι αυτό γιατί η επισκεψιμότητα των κοινωνικών δικτύων και η συμμετοχή σε αυτά, τόσο σε παγκόσμιο όσο και σε ελληνικό επίπεδο εκφράζεται ιδιαίτερα υψηλή. Η κοινωνική δικτύωση στο Ιντερνέτ και τα κοινωνικά δίκτυα στο web συνέβαλαν στην μεταβολή της δομής και της ανάπτυξης του Παγκόσμιου Ιστού. Στην παρούσα διπλωματική εργασία θα μελετηθούν τα κοινωνικά δίκτυα, η δομή τους, οι υπηρεσίες που παρέχουν καθώς και οι τεχνολογίες υποστήριξης τους. Επίσης, θα παρουσιαστούν οι τρόποι που επιτυγχάνεται η διαχείριση γνώσης μέσω των κοινωνικών δικτύων και θα αναλυθούν κάποια εργαλεία ποιοτικής και ποσοτικής ανάπτυξης. Η δομή της διπλωματικής εργασίας έχει ως εξής: Στο πρώτο κεφάλαιο ορίζεται η έννοια της εξατομίκευσης, της κοινωνικής δικτύωσης και παρουσιάζονται τα εξής κοινωνικά δίκτυα: My Space, Bebo, Linked In, Facebook, Twitter, YouTube.com, Google+, Friendster, Hi5, Sobees, Zokem, Gowalla, Qik. Στο δεύτερο κεφάλαιο παρουσιάζεται η ανάλυση των κοινωνικών δικτύων καθώς και οι μετρικές της ανάλυσης κοινωνικών δικτύων (μετρήσεις αναφορικά με τους κόμβους, μετρήσεις αναφορικά με τους γράφους). Στο τρίτο κεφάλαιο γίνεται αναφορά στα χαρακτηριστικά των κοινωνικών δικτύων, στους ρόλους κλειδιά εντός των κοινωνικών δικτύων (υπερβολικά κεντρικός ρόλος, ρόλος του αφανή ήρωα, ρόλος μεσάζοντα, ρόλος γεφύρωσης απομακρυσμένων ομάδων, υπερβολικά περιφερειακός ρόλος), στις υπηρεσίες, στις γλωσσικές ιδιότητες, καθώς και στους τομείς που εφαρμόζονται (εκπαιδευτικές, επιχειρηματικές, κυβερνητικές, ιατρικές εφαρμογές, εφαρμογές γνωριμιών). Στο τέταρτο κεφάλαιο παρουσιάζονται οι κίνδυνοι που ελλοχεύουν από την χρήση των κοινωνικών δικτύων. Η χρησιμοποίηση των προσωπικών δεδομένων των χρηστών με διαφόρους τρόπους, η αποπλάνηση ανηλίκων μέσω δημιουργίας ψεύτικων προφίλ, η κλοπή της ταυτότητας και των στοιχείων του λογαριασμού, η μετάδοση ιών, η αποστολή ανεπιθύμητης αλληλογραφίας, καθώς και η προσωποποιημένη επίθεση (phishing) είναι μερικοί από τους κίνδυνους που παρουσιάζονται από την χρήση των κοινωνικών δικτύων.Στο πέμπτο κεφάλαιο παρουσιάζεται εκτενέστερα το κοινωνικό δίκτυο Facebook, τα χαρακτηριστικά του και οι τεχνολογίες υλοποίησής τους. Γίνεται αναφορά στον τρόπο υλοποίησης της υπηρεσίας Chat με την χρήση του πρωτοκόλλου XMPP, Jabber ID. Επίσης, γίνεται αναφορά στο πρωτόκολλο επικοινωνίας IPv6, στην απόδοση διευθύνσεων, στις βελτιώσεις σε σχέση με το IPV4 κτλ. Στο έκτο κεφάλαιο εξετάζεται το λογισμικό για την ανάλυση των κοινωνικών δικτύων. Παρουσιάζονται κάποια εργαλεία ποσοτικής και ποιοτικής μέτρησης των κοινωνικών δικτύων, όπως το UCINET, Pajek, NetMiner II, STRUCTURE, MultiNet, και StOCNET. / The twenty-first century could easily be described as a century when great advance in technology was accomplished and facts reveal the increasing use of computer, internet and social networks. This is because the traffic of social networks and participation in them, both globally and also in Greece is expressed in very high level. Social networking on the Internet and social networks on the web helped to change the structure and development of the World Wide Web. This diploma will study social networks, their structure, the services they provide and their supporting technologies. Moreover, the ways that knowledge management is achieved through social networks will be presented and some tools for qualitative and quantitative growth will be analyzed. The structure of the thesis is as follows: The first chapter defines the concept of personalization, social networking and presents the following social networks: My Space, Bebo, Linked In, Facebook, Twitter, YouTube.com, Google+, Friendster, Hi5, Sobees, Zokem, Gowalla, Qik. The second chapter presents the analysis of social networks and the metrics of social network analysis (measurements with respect to the nodes, measurements regarding graphs). The third chapter refers to the features of social networks, to key roles within social networks (too central role, the role of silent hero role, intermediary role, role bridging remote teams, too peripheral role), services, language properties and applied fields (ex. education, business, government, medical applications, acquaintances). The fourth chapter describes the hazards posed through social networks. The use of personal data in different ways, the seduction of children by creating false profiles, identity and account information theft, transmission of viruses, spamming, 6 and personalized phishing attack are some of the dangers presented by the use of social networks. The fifth chapter presents in more detail the social network Facebook, the features and technologies implemented. This refers to how the Chat service is implemented using the protocol XMPP, Jabber ID. Reference is also made to the communication protocol IPv6, the addressing, the improvements over the IPV4 etc. The sixth chapter discusses the software for the analysis of social networks. It presents some quantitative and qualitative measurement of social networks such as UCINET, Pajek, NetMiner II, STRUCTURE, MultiNet, and StOCNET.

Traditionnellement, le droit est perçu comme devant assurer la stabilité de la norme et des situations régies afin de garantir la sécurité juridique des sujets de droit. Mais ceci n'est pas une vérité absolue, il ne s'agit que d'une apparence fondée sur l'approche classique de la théorie de l'Etat de droit. Pourtant, une temporalité a été mise en place afin de répondre à ce besoin. Elle se caractérise par un instant pérennisé. La temporalité juridique est une suite de séquences immobiles juxtaposées conduisant à des arythmies lors d'un passage d'un état du droit à un autre. Ainsi se révèle un temps juridique fictif hors temps réel, enfermé dans une bulle de stabilité entre deux instants déterminés. Or cette politique s'avère inefficace et dépassée face aux atteintes portées à la force obligatoire du contrat, à la permanence des lois, et face au désordre régnant au sein du système juridique. Nous pensons que les changements intervenus au sein des mécanismes juridiques et au sein du système juridique lui-même ne peuvent être traités comme de simples dérèglements ou maux à traiter. Les actes normatifs en acceptant de prendre en compte l'évolution des situations juridiques ont changé de nature. Ils sont devenus des processus intégrant en leur sein l'incertitude du temps, ses effets créateurs, et donc une certaine flexibilité. Le temps du droit n'est plus un hors temps fictif, il est un temps "contextualisé". Cette nouvelle politique du temps se révèle être remarquablement efficace en permettant de réassurer une séparation des pouvoirs par la réorganisation des sphères temporelles. / Traditionally, the right is perceived as that must assure the stability of the legal rule and the situations governed to guarantee the legal security of the subjects of right. But this is not the absolute truth; it is only about an appearance established on the classic approach of the theory of the Rule of law. Nevertheless, a temporality was organized to answer this need. It is characterized by perpetuated moment. The legal temporality is a suite of leading juxtaposed immovable sequences drives to arrhythmias during a passage of a state from the right to the other one. So shows itself a fictitious legal time except real time, locked into a bubble of stability between two definite moments. Now this politics turns out ineffective and exceeded in front of carried infringements on the binding effect of the contract, on the durability of the laws, and in front of disorder reigning within the legal system. We think that the changes intervened within the legal mechanisms and within the legal system itself cannot be treated as simple disorders or troubles to be treated. The normative acts by agreeing to take into account evolutions the situations which they govern so changed nature. They became processes integrating within them the uncertainty of time, its creative effects, and thus certain flexibility. The time of the right is not any more one except fictitious time; it is a time "contextualisé ". This new politics of time shows to be outstandingly effective by allowing to re-assure a division of powers by the reorganization of the temporal spheres.

O Brasil é um grande produtor e consumidor de café. A bebida é a segunda mais consumida no país. O café solúvel é uma alternativa para o consumo diário visto que dispensa todo aparato de preparo da bebida, sendo necessária apenas água quente. O tamanho de partícula seca está diretamente ligado à densidade aparente do produto. Foram realizados testes de secagem de extrato de café em spray-dryer com atomização por disco rotativo e fluxo co-corrente variando-se a temperatura do ar de entrada (140 - 170 °C) e rotação do disco atomizador (27000 - 33000 rpm). A análise de tamanho de partícula mostrou tendência de partículas maiores quanto menor a temperatura de secagem (26 - 36 µm). Notou-se a influência tanto da temperatura quanto da rotação do disco atomizador na análise da atividade de água. A densidade aparente não se mostrou significativamente alterada pelos parâmetros estudados nos experimentos. / Brazil is a big producer and consumer of coffee. The drink is the second most consumed in the country. Instant coffee is an alternative for daily consumption since it dispenses with all the apparatuses for preparing the drink, being necessary only hot water. The dry particle size is directly related to the bulk density of the product. Coffee extract drying tests were made in a co-current flow spray-dryer with atomization by disc with a varying inlet air temperature (140 - 170 °C) and disc velocity (27000 - 33000 rpm). The particle size analysis has shown the tendency for bigger particles to form at lower drying temperatures (26 - 36 µm). The influence of inlet air temperature and the atomizer disc spin velocity were noted in water activity analysis. The bulk density was not significantly modified by the parameters studied in the experiments.

Cette étude a pour objectif d’éclairer la notion d’ensemble de nouvelles au sein de l’œuvre de Marcel Arland. Couronné par le prix Goncourt pour son roman L’Ordre, cet auteur a abandonné ce genre pour choisir la nouvelle puis a revendiqué le recueil ensemble. En nous appuyant sur un corpus qu’il a lui même considéré comme un triptyque composant un vitrail : Les plus beaux de nos Jours, Il faut de tout pour faire un Monde et Les Vivants, nouscroiserons approches narratologique, onomastique et réceptive pour mettre à jour les récurrences qui se tissent de nouvelles en nouvelles.Celles cisont discrètes et ne s’appuient pas sur le retour d’un personnage principal identifiable. Entremêlant traumas biographiques et récit fictionnel, Arland invite le lecteur à découvrir les instants de grâce que connaissent d’humbles personnages aux existences souvent morbides. Sous une plume au classicisme impeccable, Arland instille ironie et tragédie au sein de ses nouvelles pour laisser entrevoir au lecteur attentif un monde que le temps apaise enfin. Le recueil ensemble permet à Arland de construire un monde au sein duquel morts et vivants s’unissent en un chant commun. / The aim of this study is to enlighten the topic of «  Whole  of  short  stories  »  within  the  Marcel Arland’s works. Awarded with the « Prix Goncourt » thanks to his novel L’Ordre,  this author abandoned this literary genre, chose instead of it the «  short­story » one and finally claimed the « collection­whole ». Using  a corpus which he himself considered as a triptych composing a  stained glass­window : ʺLes plus beaux de nos Joursʺ, ʺIl faut de tout  pour  faire  un  Mondeʺ  et  ʺLes  Vivantsʺ,  we  will  intertwine  the  narratological,  onomastic  and  receptive  approaches  in  order  to  uncover the recurrences which are forged from short-story to shortstory. These are unobtrusive and they don’t use the return of an  identifiable  main  character.  Intermingling  biographical  traumas  and fictional narrative, Arland invites his reader to discover the moments of grace that humble characters, with, often, morbid existences, are living. Under a faultless classical quill, Arland instils  irony  and  tragedy  within  his  short­stories  in  order to let the attentive reader glimpse a world that time at last soothes. The «  collection­whole » allows Arland to build a world in which the living and the dead become united in a common singing.

Employer monitoring of communications is prevalent and on the rise due in part to the Sarbanes-Oxley Act, the Health Insurance Privacy Protection Act, and other legislation in the U.S. and other countries. However, the critical effect of this new activity on what is communicated in companies has not been assessed. This dissertation examines the impacts of computer mediated communication systems monitoring on neutral, incriminating and exculpatory content, as well as the overall volume of communications issued on monitored and non-monitored computer mediated communication systems. Incriminating communication is cataloged in a hazard communications taxonomy for this investigation. A controlled laboratory experiment has subjects participate in an instant messaging discussion on a topic for which they are likely to be aware of information that is incriminating to their organization, or its members, or both. Consistent with self awareness theory, monitored subjects engage in significantly less overall and neutral communication. They volunteer fewer high intensity hazard communications, but are less likely to curtail low intensity hazard communications. They issue denials about more incriminating topics. Contributions to research include theory development, especially in the area of standard selection; application of self-awareness theory to the new domain of computer mediated communications monitoring; a research framework; a taxonomy and coding scheme for the new hazard communications constructs; and a relative standards influence instrument and methodology for use in studying competing standards. Implications for corporate monitoring and communications policies are discussed, and a research agenda is outlined.

<p>Purpose/aim: The purpose is to get increased knowledge about how the communication had developed from the first contact online to the first meeting in real life and even after when it had turned into a real relationship. I also wanted to know why the eight women I interviewed experienced that the Internet is a good venue to meet and develop a real relationship at and if there existed any differences between those four women who were a bit older and those four women who were young.</p><p>Material/method: When the purpose with this survey stood clear I decided to use interviews as the method to find out more about my subject. I decided to do eight interviews and I contacted eight women who all found their partners online that were willing to help me and answer my interview questions. I did six of the total eight interviews through MSN Messenger and the other two through the telephone.</p><p>Main results: I found out that three of the older women had used e-mail and telephone and sometimes SMS communication to find out more about their soon to be partner and after that decided to meet the other person in real life. One of the older women and all four of the younger ones had used a Community and Instant Messenger to communicate with their soon to be partner, they also used the telephone and SMS to communicate with each other but Instant Messenger was the medium that dominated in their wish to communicate. Those instant messenger communications were also a difference that I came to see between how the younger and older women communicated and the fact that three of the older women told me that they had used the Internet to search for a partner while one of the older women and all of the younger ones told me they didn’t search for anyone at all it just happened that they found someone and came to like that person.Keywords: Internet dating, instant messaging, Community, computer mediated communication, telephone communication, face to face communication.</p>

Purpose/aim: The purpose is to get increased knowledge about how the communication had developed from the first contact online to the first meeting in real life and even after when it had turned into a real relationship. I also wanted to know why the eight women I interviewed experienced that the Internet is a good venue to meet and develop a real relationship at and if there existed any differences between those four women who were a bit older and those four women who were young. Material/method: When the purpose with this survey stood clear I decided to use interviews as the method to find out more about my subject. I decided to do eight interviews and I contacted eight women who all found their partners online that were willing to help me and answer my interview questions. I did six of the total eight interviews through MSN Messenger and the other two through the telephone. Main results: I found out that three of the older women had used e-mail and telephone and sometimes SMS communication to find out more about their soon to be partner and after that decided to meet the other person in real life. One of the older women and all four of the younger ones had used a Community and Instant Messenger to communicate with their soon to be partner, they also used the telephone and SMS to communicate with each other but Instant Messenger was the medium that dominated in their wish to communicate. Those instant messenger communications were also a difference that I came to see between how the younger and older women communicated and the fact that three of the older women told me that they had used the Internet to search for a partner while one of the older women and all of the younger ones told me they didn’t search for anyone at all it just happened that they found someone and came to like that person.Keywords: Internet dating, instant messaging, Community, computer mediated communication, telephone communication, face to face communication.