23 resultados para call for papers


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Modern multimedia communication tools must have high security, high availability and high quality of service (QoS). Any security implementation will directly impact on QoS. This paper will investigate how end-to-end security impacts on QoS in Voice over Internet Protocol (VoIP). The QoS is measured in terms of lost packet ratio, latency and jitter using different encryption algorithms, no security and just the use of IP firewalls in Local and Wide Area Networks (LAN and WAN). The results of laboratory tests indicate that the impact on the overall performance of VoIP depends upon the bandwidth availability and encryption algorithm used. The implementation of any encryption algorithm in low bandwidth environments degrades the voice quality due to increased loss packets and packet latency, but as bandwidth increases encrypted VoIP calls provided better service compared to an unsecured environment.

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Els professors universitaris ens trobem avui en dia amb situacions a les aules que ens generen un profund desconcert, i que responen a alguns símptomes del que s’ha anomenat la secundarització de la universitat. Aquesta situació ha provocat alguns crits d’alarma motivada, entre d’altres coses, pels dèficits en la formació dels estudiants que ens arriben -fet que dificulta mantenir els estandards de qualitat i que preocupa per la tendència a la rebaixa en els nivells acadèmics-, així com per les mostres d’una infantilització dels estudiants universitaris i pels diferents llenguatges entre professor i alumne que generen dificultats comunicatives importants. Hi ha moltes mostres d’aquestes dificultats actuals, del que podríem anomenar el desconcert de la universitat davant el canvi en el perfil de l’alumnat, que dia a dia ens ocupa en les reunions de claustre, en les avaluacions de curs, etc. Sense ànim d’exhaustivitat, i amb la pretensió de fer el que podríem anomenar una crònica impressionista d’una alarma, voldria dedicar aquest article a destacar-ne alguns exemples.

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En aquest treball es realitza una anàlisi bibliomètrica i historiogràfica dels articles publicats a la revista PAPERS DE SOCIOLOGIA entre els anys 1987 i 2001, per tal de buscar-hi dades que ens permetin endinsar-nos en la realitat de la investigació sociològica que es duu a terme al nostre país, posant un èmfasi especial en les xarxes de col·laboració que s’estableixen entre els autors que publiquen les seves investigacions en aquesta revista.

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Aquest treball analitza en què consisteix l'administració electrònica i quines són les adaptacions que ha de realitzar una administració local per transformar-s'hi. El present document també recull quins són els elements clau que cal adaptar dins de l'organització, detallant-los i veient els beneficis d'utilitzar-los. Atès que la inversió econòmica per fer la transformació cap a l'e-Administració pot ser elevada, s'analitzen els serveis que ofereix de forma gratuïta el consorci d'Administració Oberta de Catalunya (AOC), els quals poden ajudar a abaratir la despesa.

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The scientific community has been suffering from peer review for decades. This process (also called refereeing) subjects an author's scientific work or ideas to the scrutiny of one or more experts in the field. Publishers use it to select and screen manuscript submissions, and funding agencies use it to award research funds. The goal is to get authors to meet their discipline's standards and thus achieve scientific objectivity. Publications and awards that haven't undergone peer review are often regarded with suspicion by scholars and professionals in many fields. However, peer review, although universally used, has many drawbacks. We propose replacing peer review with an auction-based approach: the better the submitted paper, the more scientific currency the author likely bid to have it published. If the bid correctly reflects the paper's quality, the author is rewarded in this new scientific currency; otherwise, the author loses this currency. We argue that citations are an appropriate currency for all scientists. We believe that citation auctions encourage scientists to better control their submissions' quality. It also inspire them to prepare more exciting talks for accepted papers and to invite discussion of their results at congresses and conferences and among their colleagues. In the long run, citation auctions could have the power to greatly improve scientific research

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This paper describes the basis of citation auctions as a new approach to selecting scientific papers for publication. Our main idea is to use an auction for selecting papers for publication through - differently from the state of the art - bids that consist of the number of citations that a scientist expects to receive if the paper is published. Hence, a citation auction is the selection process itself, and no reviewers are involved. The benefits of the proposed approach are two-fold. First, the cost of refereeing will be either totally eliminated or significantly reduced, because the process of citation auction does not need prior understanding of the paper's content to judge the quality of its contribution. Additionally, the method will not prejudge the content of the paper, so it will increase the openness of publications to new ideas. Second, scientists will be much more committed to the quality of their papers, paying close attention to distributing and explaining their papers in detail to maximize the number of citations that the paper receives. Sample analyses of the number of citations collected in papers published in years 1999-2004 for one journal, and in years 2003-2005 for a series of conferences (in a totally different discipline), via Google scholar, are provided. Finally, a simple simulation of an auction is given to outline the behaviour of the citation auction approach