Web Client for Smart Messaging Exchange

TeliaSoneran älykkään viestintäjärjestelmän kehitysluonnoksella (SME) pilotoidaan prototyyppipalveluita, joiden avulla asiakkaat voivat välittää viestejä matkapuhelimilla sekä tietokoneilla. SME:n peruspalveluita voidaan käyttää SIP-standardin mukaisilla asiakasohjelmilla sekä SME:n omilla WAP- ja WWW-käyttöliittymillä. Käyttäjät voivat nähdä toistensa tilatiedon, muuttaa omaa tilatietoaan sekä lähettää SIP-pikaviestejä, sähköpostiviestejä ja tekstiviestejä. Käyttäjät voivat myös ylläpitää listaa yhteyshenkilöistään, vastaanottaa pikaviestejä ja selata vastaanotettuja viestejä. Diplomityössä käsitellään yleisesti SME-järjestelmän rakennetta ja paneudutaan tutkimaan työssä toteutetun SME:n WWW-asiakasohjelman toteutusta. Diplomityössä käydään läpi projektiin liittyviä standardeja, suosituksia, toteustekniikoita sekä palveluita. Lisäksi tarkastellaan työssä hyödynnettyjä ohjelmointirajapintoja, nykyisiä älypuhelimia sekä niiden Internet-selaimia, jotka rajoittavat WWW-asiakaspalvelun toteutuksessa käytettyjä toteutustekniikkavaihtoehtoja. Lopuksi esitellään toteutettujen ohjelmistojen sisäistä rakennetta ja toimintaa.

Paikkatiedon hyödyntäminen Jabber-pikaviestintäohjelmistossa

Työn teoriaosuudessa tutustutaan ensin paikkatiedon käsitteeseen ja paikkatietoa hyödyntäviin palveluihin. Lisäksi perehdytään paikannukseen langattomissa lähiverkoissa ja erityisesti paikannukseen tämän diplomityön osalta käytettävässä verkossa. Työn teoriaosuudessa tutustutaan myös paikkatietoa hyödyntävien palveluiden hyöty- sekä haittanäkökulmiin. Teoriaosuudessa käydään myös läpi tällä hetkellä yleisimmät pikaviestintäarkkitehtuurit ja tutustutaan tarkemmin Jabber–pikaviestintäohjelmiston käyttämään protokollaan. Lopuksi tarkastellaan paikkatiedon hyödyntämiseen liittyviä lakiteknisiä seikkoja ja henkilön yksityisyyden suojaa. Diplomityön käytännön osuudessa tutustutaan paikkatietoa hyödyntävän palvelinkomponentin toteutukseen Jabber–arkkitehtuuria hyväksikäyttäen. Jabber-palvelinohjelmisto ja tehty komponentti toimivat langattomassa lähiverkossa (WLPR.NET), jota ylläpitää Lappeenrannan teknillisen yliopiston tietoliikennetekniikan laitos. Verkon käyttäjät voivat rekisteröityä palvelun käyttäjiksi, jonka jälkeen palvelinkomponentti pitää kirjaa rekisteröityneiden käyttäjien paikkatiedosta ja sen muutoksista. Lisäksi käyttäjät voivat hakea muiden käyttäjien paikkatietoa asiakasohjelmistossa toimivan hakutoiminnon avulla. Käyttäjien paikkatieto saadaan käyttämällä jo olemassa olevaa tekniikkaa.

A motivação na aprendizagem de língua estrangeira via teletandem

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Serviço de Referência Virtual via chat: uma análise comparativa em bibliotecas universitárias norte-americanas e brasileiras

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Serviço de referência virtual via chat: uma análise comparativa em bibliotecas universitárias norte-americanas e brasileiras

Pós-graduação em Ciência da Informação - FFC

Distinctive Features of Mobile Messages Processing

World’s mobile market pushes past 2 billion lines in 2005. Success in these competitive markets requires operational excellence with product and service innovation to improve the mobile performance. Mobile users very often prefer to send a mobile instant message or text messages rather than talking on a mobile. Well developed “written speech analysis” does not work not only with “verbal speech” but also with “mobile text messages”. The main purpose of our paper is, firstly, to highlight the problems of mobile text messages processing and, secondly, to show the possible ways of solving these problems.

Relational work in synchronous text-based CMC of virtual teams

Based on close examinations of instant message (IM) interactions, this chapter argues that an interactional sociolinguistic approach to computer-mediated language use could provide explanations for phenomena that previously could not be accounted for in computer-mediated discourse analysis (CMDA). Drawing on the theoretical framework of relational work (Locher, 2006), the analysis focuses on non-task oriented talk and its function in forming and establishing communication norms in the team, as well as micro-level phenomena, such as hesitation, backchannel signals and emoticons. The conclusions of this preliminary research suggest that the linguistic strategies used for substituting audio-visual signals are strategically used in discursive functions and have an important role in relational work

Telefone celular como recurso didático no ensino de física

Currently, there are several factors that suggest the need for the school to review their teaching practices: 1) the speed with which information and communication technologies - ICT are spread throughout society and in particular the increasing use of mobile phone by groups in school age;2) the scope and power of integrating ICT convergence of these technological resources, that can be used as teaching resources; 3) the fact that nowadays students grow up in a technological world and make their thought patterns operating in accordance with this reality, etc... In contrast, there are educators unrelated to the appropriation of ICT, presenting, in many cases, resistance to them. There is a incongruity between how individuals use mobile phones, for example, inside and outside the school. There are also educators, schools, public educational departments claiming to be against mobile phones usage; bills and laws regulating their use in educational space, etc... For these controversial aspects we have investigated whether cell phone use as a teaching resource practices mediator in Physics teaching. For this purpose, we developed an applied research with qualitative and exploratory approach about the objectives, adopting participant and the technical procedures. A documental and bibliographical research was taken. First of all, data were collected by e-mail, through a multiple choice questionnaire applied to private school teachers in southern Brazil, to identify the researched reality and develop teaching practices likely to be applied in the studied corpus. Then, such practices were applied in workshops located in Curitiba and Ponta Grossa cities, in Paraná state. During the application, data was collected by the researcher's field notes. Then, we recorded chats about the workshops from an instant message software (msn messenger), and we took photographic records. Data analysis was performed by triangulation. The results showed the need to enhance continuing education courses for teachers and the production of national academic literature, such as articles, dissertations, theses and books that explore the theme of the cell phone and its functionality in educational spaces as an educational resource mediator in the practices of teaching Physics. They are available in the dissertation defended in 2012, and now are also systematized in this book, organized as a final product of research conducted by the Graduate Program in Science Education and Technology UTFPR, Campus Ponta Grossa-PR.

Sensory evaluation of black instant coffee beverage with some volatile compounds present in aromatic oil from roasted coffee

The oil obtained from Brazilian roasted coffee by supercritical CO2 extraction shows considerable aromatic properties, mainly composed by five aromatic compounds, 2-methylpyrazine; 2-furfurylalcohol, 2,5-dimethylpyrazine; γ-butyrolactone and 2-furfurylacetate. Sensory analyses were used to verify the influence of a mixture of these important classes of aromatic coffee compounds (pyrazines, furans and lactones) and of the roasted coffee aromatic oil on the coffee aroma and flavour of black instant freeze and spray-dried coffee beverages. In the acceptance evaluation of the aroma, the samples prepared with freeze-dried instant coffee without the mixture of volatile compounds (sample 4) were not significantly different from the freeze-dried instant coffee in which the aromatic coffee oil was added (sample 5) and from the sample prepared with freeze-dried coffee in which the mixture of the five volatile was added (sample 3), coincidentally from the same drying process. Therefore, sample (3) did not differ from samples prepared with spray dried instant coffee without (sample 1) and to which (sample 2) the mixture of volatile was added. Therefore, with respect to this attribute, the addition of this mixture did not interfere in this drink acceptance. Taking into consideration the flavor, samples prepared with freeze-dried instant coffee in which the aromatic coffee oil was added (5) and the samples with (3) and without (4) the mixture of the five volatile was added did not differ significantly, however sample (4) did not differ from samples (1) and (2). Regarding this attribute, the addition of the aromatic oil of roasted coffee or a mixture of volatile in samples of freeze-dried instant coffee had a better acceptance than those dried by spray dryer (1) and (2). Thus, the enrichment of drinks with the aromatic oil of roasted coffee, or even with the mixture of the five components did not influence the consumer acceptance with respect to the aroma, but exerts influence with respect to flavour.

Can we make a Bohmian electron reach the speed of light, at least for one instant?

In Bohmian mechanics, a version of quantum mechanics that ascribes world lines to electrons, we can meaningfully ask about an electron's instantaneous speed relative to a given inertial frame. Interestingly, according to the relativistic version of Bohmian mechanics using the Dirac equation, a massive particle's speed is less than or equal to the speed of light, but not necessarily less. That is, there are situations in which the particle actually reaches the speed of light-a very nonclassical behavior. That leads us to the question of whether such situations can be arranged experimentally. We prove a theorem, Theorem 5, implying that for generic initial wave functions the probability that the particle ever reaches the speed of light, even if at only one point in time, is zero. We conclude that the answer to the question is no. Since a trajectory reaches the speed of light whenever the quantum probability current (psi) over bar gamma(mu)psi is a lightlike 4-vector, our analysis concerns the current vector field of a generic wave function and may thus be of interest also independently of Bohmian mechanics. The fact that the current is never spacelike has been used to argue against the possibility of faster-than-light tunneling through a barrier, a somewhat similar question. Theorem 5, as well as a more general version provided by Theorem 6, are also interesting in their own right. They concern a certain property of a function psi : R(4) -> C(4) that is crucial to the question of reaching the speed of light, namely being transverse to a certain submanifold of C(4) along a given compact subset of space-time. While it follows from the known transversality theorem of differential topology that this property is generic among smooth functions psi : R(4) -> C(4), Theorem 5 asserts that it is also generic among smooth solutions of the Dirac equation. (C) 2010 American Institute of Physics. [doi:10.1063/1.3520529]

Effect of self-monitoring and national culture on follower perceptions of personal charisma and charismatic message

In this paper, a theory of charismatic relationships is examined with reference to the follower's personal characteristics. It is argued that a leader's charismatic message and personal charisma occupy different roles for individuals who vary in national culture and level of self-monitoring. In an empirical test of the theory, 387 undergraduates of Chinese and Australian cultural backgrounds completed self-monitoring and charismatic leadership instruments. High self-monitors placed more importance on personal charisma than the charismatic message. Chinese participants relied more than the Australians on the charismatic message, although this preference depended on self-monitoring orientation. These results indicate the influence of both individual-and cultural-level variables on leader-member relationships, and the need to consider these effects in future developments of a theory of charismatic leadership.

Investigation of the relationship between protein, message and inducer concentrations in recombinant E-coli cells

Chloramphenicol acetyl transferase (CAT) protein and mRNA levels in E. coli were determined following induction of a tac::cat construct by isopropyl-beta-thiogalactopyranoside (IPTG). High cat mRNA levels did not directly reflect CAT protein levels, in either shakeflask experiments or fermentations. Furthermore, concentrations of IPTG resulting in the highest levels of expression of cat mRNA, were different to those resulting in highest levels of CAT protein. The data suggest that high transcriptional activities lead to limitations at the translational level.

Multi-threading and message communication in Qu-Prolog

This paper presents the multi-threading and internet message communication capabilities of Qu-Prolog. Message addresses are symbolic and the communications package provides high-level support that completely hides details of IP addresses and port numbers as well as the underlying TCP/IP transport layer. The combination of the multi-threads and the high level inter-thread message communications provide simple, powerful support for implementing internet distributed intelligent applications.