926 resultados para MOOCs – Massive Open Online Courses
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Nach der Erfindung der Computer in Kombination mit der Sprachwissenschaft entstand die maschinelle Übersetzung als Teilbereich der künstlichen Intelligenz. Maschinelle Übersetzungssysteme werden heutzutage oft im Lokalisierungsprozess eingesetzt, um die Übersetzungs- und Lokalisierungsaufwände zeitlich und kostenmäßig zu reduzieren. Es ist zu sehen, dass heutzutage maschinelle Übersetzung starke und eindeutige Marktpräsenz besitzt. Daher gibt es immer mehr Menschen, die sich für die Darstellung von Aufbau, Funktionsweise und Einsatzszenarien maschineller Übersetzung und für die Nutzung online verfügbarer Ressourcen für maschinelle Übersetzung interessieren. Die vorliegende Arbeit gibt einen Überblick über die Anwendungsbereiche, Anwendungsverfahren und die Möglichkeiten der Nutzung online verfügbarer Ressourcen der maschinellen Übersetzung, so dass sich im Beruf stehende Übersetzer mit dieser Technologie und ihren Möglichkeiten und Grenzen vertraut machen können. Auch im Rahmen eines Fernstudiums können die in der Arbeit vorgestellten Informationsquellen und Ressourcen eingesetzt werden, um die Grundlagen der MÜ zu erlernen. Zu diesem Zweck werden die weiteren Aufgabenfelder und Kombinationsmöglichkeiten in naher Zukunft prognostiziert.
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Drosophila Fallen, 1823 (Diptera, Drosophilidae) is for long a well-established model organism for genetics and evolutionary research. The ecology of these flies, however, has only recently been better studied. Recent papers show that Drosophila assemblies can be used as bioindicators of forested environment degradation. In this work the bioindicator potential of drosophilids was evaluated in a naturally opened environment, a coastal strand-forest (restinga). Data from nine consecutive seasonal collections revealed strong temporal fluctuation pattern of the majority of Drosophila species groups. Drosophila willistoni group was more abundant at autumns, whereas D. cardini and D. tripunctata groups were, respectively, expressive at winters and springs, and D. repleta group at both seasons. The exotic species D. simulans Sturtevant, 1919 (from D. melanogaster group) and Zaprionus indianus Gupta, 1970 were most abundant at summers. Overall, the assemblage structure did not show the same characteristics of forested or urban environments, but was similar to the forests at winters and to cities at summers. This raises the question that this locality may already been under urbanization impact. Also, this can be interpreted as an easily invaded site for exotic species, what might lead to biotic homogenization and therefore can put in check the usage of drosophilid assemblages as bioindicators at open environments.
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Combined media on paper. 42" x 87"
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Two claims pervade the literature on the political economy of market reforms: that economic crises cause reforms; and that crises matter because they bring into question the validity of the economic model held to be responsible for them. Economic crises are said to spur a process of learning that is conducive to the abandonment of failing models and to the adoption of successful models. But although these claims have become the conventional wisdom, they have been hardly tested empirically due to the lack of agreement on what constitutes a crisis and to difficulties in measuring learning from them. I propose a model of rational learning from experience and apply it to the decision to open the economy. Using data from 1964 through 1990, I show that learning from the 1982 debt crisis was relevant to the first wave of adoption of an export promotion strategy, but learning was conditional on the high variability of economic outcomes in countries that opened up to trade. Learning was also symbolic in that the sheer number of other countries that liberalized was a more important driver of others’ decisions to follow suit.
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Fault tolerance has become a major issue for computer and software engineers because the occurrence of faults increases the cost of using a parallel computer. RADIC is the fault tolerance architecture for message passing systems which is transparent, decentralized, flexible and scalable. This master thesis presents the methodology used to implement the RADIC architecture over Open MPI, a well-know large-used message passing library. This implementation kept the RADIC architecture characteristics. In order to validate the implementation we have executed a synthetic ping program, besides, to evaluate the implementation performance we have used the NAS Parallel Benchmarks. The results prove that the RADIC architecture performance depends on the communication pattern of the parallel application which is running. Furthermore, our implementation proves that the RADIC architecture could be implemented over an existent message passing library.
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Avui en dia la venda de productes, mitjançant les possibilitats que ens ofereix Internet, es troba en ple creixement. Aquest projecte pretén posar en funcionament una pàgina Web dedicada a la venda de fruita, concretament kiwis. Des de fa un temps, la població comença a ser conscient del desequilibri entre l'agent productor i l'agent comercial. Com passa també en altres sectors, el productor ven a un preu molt inferior respecte al que després es ficarà de cara al comprador final. En el cas de la fruita, el client acaba comprant un producte més car i normalment de menys qualitat. L'objectiu principal d'aquest projecte és promoure la venda online a partir d'una mercaderia de qualitat i més econòmica, aconseguint un major benefici tant per part del productor com del client.