7 resultados para short-time dynamics
em Dalarna University College Electronic Archive
Resumo:
Data mining is a relatively new field of research that its objective is to acquire knowledge from large amounts of data. In medical and health care areas, due to regulations and due to the availability of computers, a large amount of data is becoming available [27]. On the one hand, practitioners are expected to use all this data in their work but, at the same time, such a large amount of data cannot be processed by humans in a short time to make diagnosis, prognosis and treatment schedules. A major objective of this thesis is to evaluate data mining tools in medical and health care applications to develop a tool that can help make rather accurate decisions. In this thesis, the goal is finding a pattern among patients who got pneumonia by clustering of lab data values which have been recorded every day. By this pattern we can generalize it to the patients who did not have been diagnosed by this disease whose lab values shows the same trend as pneumonia patients does. There are 10 tables which have been extracted from a big data base of a hospital in Jena for my work .In ICU (intensive care unit), COPRA system which is a patient management system has been used. All the tables and data stored in German Language database.
Resumo:
An overview of the theoretical literature for the last two decades suggests that there is no clear-cut relationship one can pin down between exchange rate volatility and trade flows. Analytical results are based on specific assumptions and only hold in certain cases. Especially, the impact of exchange rate volatility on export and import activity investigated separately leads also to dissimilar conclusions among countries studied. The general presumption is that an increase in exchange rate volatility will have an adverse effect on trade flows and consequently, the overall heath of the world economy. However, neither theoretical models nor empirical studies provide us with a definitive answer, leaving obtained results highly ambiguous and inconsistent (Baum and Caglayan, 2006). We purposed to empirically investigate trade effects of exchange rate fluctuations in Sweden from the perspective of export and import in this research. The data comprises period from January 1993 to December 2006, where export and import volumes are considered from the point of their determinants, including exchange rate volatility, which has been measured through EGARCH model. The results for the case of Sweden show that short run dynamics of volatility negatively associated with both export and import, whereas considered from the case of previous period volatility it exhibits positive relationship. These results are consistent with the most findings of prior studies, where the relationship remained ambiguous.
Resumo:
Condition monitoring of wooden railway sleepers applications are generallycarried out by visual inspection and if necessary some impact acoustic examination iscarried out intuitively by skilled personnel. In this work, a pattern recognition solutionhas been proposed to automate the process for the achievement of robust results. Thestudy presents a comparison of several pattern recognition techniques together withvarious nonstationary feature extraction techniques for classification of impactacoustic emissions. Pattern classifiers such as multilayer perceptron, learning cectorquantization and gaussian mixture models, are combined with nonstationary featureextraction techniques such as Short Time Fourier Transform, Continuous WaveletTransform, Discrete Wavelet Transform and Wigner-Ville Distribution. Due to thepresence of several different feature extraction and classification technqies, datafusion has been investigated. Data fusion in the current case has mainly beeninvestigated on two levels, feature level and classifier level respectively. Fusion at thefeature level demonstrated best results with an overall accuracy of 82% whencompared to the human operator.
Resumo:
「Fansubs」というのはファンが翻訳した字幕のことである。 本稿では日本のテレビドラマの「Fansubs」の特徴を調べる為、3つのテレビドラマの日本 語の台詞と、ファンが作った字幕を比べている。原文のテキストが翻訳と字幕制作でどの ように変わったかを情報の増減や誤訳など9つのカテゴリーに分類し、字幕テキストを 分析した。作成したのがプロの翻訳者ではなく、または非常に短期間で作成されたこの 「Fansubs」は、公式のテレビやDVDの字幕よりも誤訳などのエラーが非常に多いことが分 かった。
Resumo:
Background: The insecticides dichlorvos, paradichlorobenzene and naphthalene have been commonly used to eradicate pest insects from natural history collections. However, it is not known how these chemicals affect the DNA of the specimens in the collections. We thus tested the effect of dichlorvos, paradichlorobenzene and naphthalene on DNA of insects (Musca domestica) by extracting and amplifying DNA from specimens exposed to insecticides in two different concentrations over increasing time intervals. Results: The results clearly show that dichlorvos impedes both extraction and amplification of mitochondrial and nuclear DNA after relatively short time, whereas paradichlorobenzene and naphthalene do not. Conclusion: Collections treated with paradichlorobenzene and naphthalene, are better preserved concerning DNA, than those treated with dichlorvos. Non toxic pest control methods should, however, be preferred due to physical damage of specimens and putative health risks by chemicals.
Resumo:
By the means of a questionnaire the present work examines the attitudes among pupils between the 5th and 9th grade towards choosing French, Spanish or German as their third language. The main question to be answered is "What needs to be improved to raise the interest in choosing specifically German as their preferred third language?". The other questions posed are for example "Do they want to study a language at all?", "Which language do they want to study and why?" or "What motivates them to keep studying generally?". The results show a high motivation and that the most pupils have already decided for a specific language at the middle of the 5th grade. Family and friends play a crucial role in choosing their language in combination with other factors such as the experiences of visiting countries or settings where the target language is used. To raise the popularity of German as the chosen language is not a short time project. More variation in teaching and real contact with German people, for instance language trips, needs to be done or improved. Nearly all of the pupils want to use modern techniques like chat or video conversations instead of just reading a text book.
Resumo:
L’objectif de ce mémoire est d’étudier le rôle de la politesse dans l’interaction verbale. Ce document répondra à la question de savoir si un dialogue peut rester pacifique et sans friction en absence de politesse. Une description brève de la théorie de la politesse est suivie par une analyse. L’analyse montrera toutefois qu’on ne peut pas parler d’absence complète de politesse durant toute l’entièreté d’un échange mais uniquement lors de moments très brefs de celui-ci. Ces fragments d’échange non-polis mais pacifiques se manifesteront lors de dialogues où il existe déjà une relation de confiance entre les locuteurs.