225 research outputs found
A Replication Framework for Program-to-Program Interaction across Unreliable Networks and its Implementation in a Servlet Container
No full textWe propose a service replication framework for unreliable networks. The service exhibits the same consistency guarantees about the order of execution of operation requests as its non-replicated implementation. Such guarantees are preserved in spite of server replica failure, network failure (either between server replicas or between a client and a server replica) and irrespective of when the failure occurs. Moreover, the service guarantees that in case a client sends an “update” request multiple times, there is no risk that the request be executed multiple times. No hypothesis about the timing retransmission policy of clients are made, e.g., the very same request might even arrive at different server replicas simultaneously. All these features make the proposed framework particularly suitable for interaction between remote programs, a scenario that is gaining increasing importance. We discuss a prototype implementation of our replication framework based on Tomcat, a very popular Java-based web server. The prototype comes into two flavors: replication of HTTP client session data and replication of a counter accessed as a web service
Pietas litterata. Internationales Jahrbuch für religiöses Wissen in der deutschen Literatur des Spätmittelalters und der Frühen Neuzeit
No full textBenz M, Bihrer A, Lehner UL, Mauz A, Prica A, eds. Pietas litterata. Internationales Jahrbuch für religiöses Wissen in der deutschen Literatur des Spätmittelalters und der Frühen Neuzeit. Vol 1. Stuttgart: Anton Hiersemann Verlag; 2023
The priority curve algorithm for video summarization
No full textIn this paper, we introduce the concept of a priority curve associated with a video. We then provide an algorithm that can use the priority curve to create a summary (of a desired length) of any video. The summary thus created exhibits nice continuity properties and also avoids repetition. We have implemented the priority curve algorithm (PriCA) and compared it with other summarization algorithms in the literature with respect to both performance and the output quality. The quality of summaries was evaluated by a group of 200 students in Naples, Italy, who watched soccer videos. We show that PriCA is faster than existing algorithms and also produces better quality summaries. We also briefly describe a soccer video summarization system we have built on using the PriCA architecture and various (classical) image processing algorithms
Adaptive message packing for group communication systems
No full textAbstract. Group communication is one of the main paradigms for implementing replication middleware. The high run-time costs of group communication may constitute a major performance bottleneck for modern enterprise applications. In this paper we investigate the applicability of message packing, a technique originally proposed by Friedman and Van Renesse in 1997 for improving the performance of group communication, to modern hardware and group communication toolkits. Most importantly, we extend this technique with a policy for varying the packing degree automatically, based on dynamic estimates of the optimal packing degree. The resulting system is adaptive in that it allows exploiting message packing efficiently in a dynamic and potentially unknown run-time environment. Several case studies are analyzed.
A Complete Guide to Extraction Methods of Microplastics from Complex Environmental Matrices
No full textSustainable development is a big global challenge for the 21st century. In recent years, a class of emerging contaminants known as microplastics (MPs) has been identified as a significant pollutant with the potential to harm ecosystems. These small plastic particles have been found in every compartment of the planet, with aquatic habitats serving as the ultimate sink. The challenge to extract MPs from different environmental matrices is a tangible and imperative issue. One of the primary specialties of research in environmental chemistry is the development of simple, rapid, low-cost, sensitive, and selective analytical methods for the extraction and identification of MPs in the environment. The present review describes the developments in MP extraction methods from complex environmental matrices. All existing methodologies (new, old, and proof-of-concept) are discussed and evaluated for their potential usefulness to extract MPs from various biotic and abiotic matrices for the sake of progress and innovation. This study concludes by addressing the current challenges and outlining future research objectives aimed at combating MP pollution. Additionally, a set of recommendations is provided to assist researchers in selecting appropriate analytical techniques for obtaining accurate results. To facilitate this process, a proposed roadmap for MP extraction is presented, considering the specific environmental compartments under investigation. By following this roadmap, researchers can enhance their understanding of MP pollution and contribute to effective mitigation strategies
Noël Duval et Vladislav Popović (éd.), Caričin Grad III. L’Acropole et ses monuments (cathédrale, baptistère et bâtiments annexes). Texte de J.-P. Caillet, N. Duval, M. Jeremić, C. Metzger, V. Popović et Č. Vasić. Avec la participation de F. Baratte, C. Balmelle, Lj. Bjelajac, A. Chavarría, V. Ivanišević, M. Lazić, Y. Marano, C. Morrisson, I. Nikolajević, R. Prica, M. Reddé et M. Royo. Relevés, dessins et restitutions de M. Jeremić et Č. Vasić. Avec la collaboration de R. Božović, H. Broise, U. Colalelli, F. Fouilland, R. Gilardi, M. Hamrouni, Y. Junius et N. Stepanović. Avec le concours pour la documentation photographique de F. Baritel, N. Borić, Lj. Prodanović, M.-P. Raynaud et J. Šurdilović. Édité par Noël Duval et Vladislav Popović (Collection de l’École française de Rome 75/ 3), 2010
No full textNoël Duval et Vladislav Popović (éd.), Caričin Grad III. L’Acropole et ses monuments (cathédrale, baptistère et bâtiments annexes). Texte de J.-P. Caillet, N. Duval, M. Jeremić, C. Metzger, V. Popović et Č. Vasić. Avec la participation de F. Baratte, C. Balmelle, Lj. Bjelajac, A. Chavarría, V. Ivanišević, M. Lazić, Y. Marano, C. Morrisson, I. Nikolajević, R. Prica, M. Reddé et M. Royo. Relevés, dessins et restitutions de M. Jeremić et Č. Vasić. Avec la collaboration de R. Božović, H. Broise, U. Colalelli, F. Fouilland, R. Gilardi, M. Hamrouni, Y. Junius et N. Stepanović. Avec le concours pour la documentation photographique de F. Baritel, N. Borić, Lj. Prodanović, M.-P. Raynaud et J. Šurdilović. Édité par Noël Duval et Vladislav Popović (Collection de l’École française de Rome 75/ 3), 2010. In: Revue des études byzantines, tome 70, 2012. p. 332
Noël Duval et Vladislav Popović (éd.), Caričin Grad III. L’Acropole et ses monuments (cathédrale, baptistère et bâtiments annexes). Texte de J.-P. Caillet, N. Duval, M. Jeremić, C. Metzger, V. Popović et Č. Vasić. Avec la participation de F. Baratte, C. Balmelle, Lj. Bjelajac, A. Chavarría, V. Ivanišević, M. Lazić, Y. Marano, C. Morrisson, I. Nikolajević, R. Prica, M. Reddé et M. Royo. Relevés, dessins et restitutions de M. Jeremić et Č. Vasić. Avec la collaboration de R. Božović, H. Broise, U. Colalelli, F. Fouilland, R. Gilardi, M. Hamrouni, Y. Junius et N. Stepanović. Avec le concours pour la documentation photographique de F. Baritel, N. Borić, Lj. Prodanović, M.-P. Raynaud et J. Šurdilović. Édité par Noël Duval et Vladislav Popović (Collection de l’École française de Rome 75/ 3), 2010
No full textNoël Duval et Vladislav Popović (éd.), Caričin Grad III. L’Acropole et ses monuments (cathédrale, baptistère et bâtiments annexes). Texte de J.-P. Caillet, N. Duval, M. Jeremić, C. Metzger, V. Popović et Č. Vasić. Avec la participation de F. Baratte, C. Balmelle, Lj. Bjelajac, A. Chavarría, V. Ivanišević, M. Lazić, Y. Marano, C. Morrisson, I. Nikolajević, R. Prica, M. Reddé et M. Royo. Relevés, dessins et restitutions de M. Jeremić et Č. Vasić. Avec la collaboration de R. Božović, H. Broise, U. Colalelli, F. Fouilland, R. Gilardi, M. Hamrouni, Y. Junius et N. Stepanović. Avec le concours pour la documentation photographique de F. Baritel, N. Borić, Lj. Prodanović, M.-P. Raynaud et J. Šurdilović. Édité par Noël Duval et Vladislav Popović (Collection de l’École française de Rome 75/ 3), 2010. In: Revue des études byzantines, tome 70, 2012. p. 332
Apple on the Moon: Karlheinz Stockhausen’s Telemusik
No full textThe book contains the abstract of the paper presented on the XII. International Conference of the Department of Musicology, Faculty of Music in Belgrade (24-27 October 2018) as well as the biography of the author
Nationalism among the Croats
No full textThese are the three lectures about Croatian nationalism presented in the Serbian Culture Club in 1940. They review the history of the Croato-Serbian relations in a specific way, from the time when the Serbs settled in the regions of the former Croatian medieval state, after the Turkish conquest of the Balkans, after the fall of Bosnia in 1463 and after the Moh?cs Battle in 1526, till the period preceding World War II. Comparing Serbian and Croatian nationalism, the author points out that nationalism among the Croats appeared relatively late, that it did not have deeper folk roots and that at first it was the nationalism of the upper class. It was a feudal-estate nationalism but later there also appeared Austro-Catholic nationalism of the lower class in the regions under the Habsburgs. Enmity, hatred towards the Serbs and Serbophobia were the common features of these two nationalisms. The author points out that the feudal-estate nationalism of the upper class was caused by the state-legal and agrarian-legal regulation in the regions of the former Croatian kingdom settled by the Serbs. These regions, under the name of Military Border, were granted a special legal system. As for their state-legal status, the Serbs were completely excluded from the rule of the Croatian Ban the Croatian Assembly, and were under the jurisdiction of the Austrian military commanders ? therefore, directly under Vienna. As for the agrarian-legal status, Vienna completely freed the inhabitants of the Border from all taxes for the Croatian gentry, who had owned these regions before the Turkish offensive; the reason was to motivate the Serbs for permanent military service at the Border and to use these regulations to lure new Serbs-solders from the neighbouring Turkish Empire. And the dynastic-catholic nationalism of the lower class clashed with the Serbs, inhabitants of the Border, primarily because of the religious intolerance, of the irresistable desire to convert the Serbs into Catholicism. In addition, envy towards the Serbs in the Border area ? warriors and free men ? began to develop more and more among the Croatian peasants in the Ban?s Croatia, in the so-called provincial, who still remained the serfs of their gentry. The author underlines that the Croatian Serbophobias have deep historical and social roots, and points to the typical historical facts which confirm that. Croatian nationalism withdrew only sporadically before the Illyrian Yugoslavism, which saw several rises and falls in Croatia. Yugoslavism was strengthened only when the pressure from Vienna, Pest or the Italians was stronger and, secondly, it worked only when there were chances to realize it from Zagreb, not from Belgrade. As soon as one of these two conditions was not met, Croatian spirit exclusively prevailed. The author disagrees with those who believed that the Croatian nationalism could have been neutralized by decentralization, federalization and democratization of the common state. He thinks that the Croatian nationalist movement did not want a just arrangement of the relations with the Serbs, but Croatia with the border on the Drina, in which the Serbian nation would be stifled with the use of "modern" methods. Therefore, he believes that only a resolute resistance of the Serbs in the defence of their interests could stop Croatian chauvinism.</jats:p
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