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排序方式: 共有291条查询结果,搜索用时 15 毫秒
71.
Tissue Engineering: Liquid Crystalline Networks toward Regenerative Medicine and Tissue Repair (Small 46/2017)
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Usha Narra Fabio Di Troia Visaggio Aaron Corrado Thomas H. Austin Mark Stamp 《Journal in Computer Virology》2016,12(4):213-224
Previous work has shown that cluster analysis can be used to effectively classify malware into meaningful families. In this research, we apply cluster analysis to the challenging problem of classifying previously unknown malware. We perform several experiments involving malware clustering. We compare our clustering results to those obtained when a support vector machine (SVM) is trained on the malware family. Using clustering, we are able to classify malware with an accuracy comparable to that of an SVM. An advantage of the clustering approach is that a new malware family can be classified before a model has been trained specifically for the family. 相似文献
74.
The increasing growth of malicious websites and systems for distributing malware through websites is making it urgent the adoption of effective techniques for timely detection of web security threats. Current mechanisms may exhibit some limitations, mainly concerning the amount of resources required, and a low true positives rate for zero-day attacks. With this paper, we propose and validate a set of features extracted from the content and the structure of webpages, which could be used as indicators of web security threats. The features are used for building a predictor, based on five machine learning algorithms, which is applied to classify unknown web applications. The experimentation demonstrated that the proposed set of features is able to correctly classify malicious web sites with a high level of precision, corresponding to 0.84 in the best case, and recall corresponding to 0.89 in the best case. The classifiers reveal to be successful also with zero day attacks. 相似文献
75.
Vladimir N. lgnatov Claudio Carraro Vittorio Tartari Roberto Pippa Francesco Pilati Corrado Berti Maurizio Toselli Maurizio Fiorini 《Polymer》1996,37(26):5883-5887
Reactive blending of commercial poly(ethylene terephthalate) (PET) and bisphenol A polycarbonate (PC), with catalysts added in the form of powder dispersed on the polymers just before melt mixing, was performed in a Brabender Plasticord 2000 apparatus at 275°C. Catalytic activity of the catalysts freshly added to polymers was found to be much higher as compared with that of the residues of the same type of catalysts remaining in PET after its synthesis. Furthermore, the catalytic activity appeared to be strongly dependent on the structure of the ligand that influences the catalyst solubility in the polymer melt. N.m.r. spectroscopy, selective degradation of PC fragments, solubility tests in methylene chloride and d.s.c. measurements made it possible to range the catalysts studied according to their catalytic activity. 相似文献
76.
Salvatore Cosentino Maria Miritello Isodiana Crupi Giuseppe Nicotra Francesca Simone Corrado Spinella Antonio Terrasi Salvatore Mirabella 《Nanoscale research letters》2013,8(1):128
In this work, ultrathin amorphous Ge films (2 to 30 nm in thickness) embedded in SiO2 layers were grown by magnetron sputtering and employed as proficient light sensitizer in photodetector devices. A noteworthy modification of the visible photon absorption is evidenced due to quantum confinement effects which cause both a blueshift (from 0.8 to 1.8 eV) in the bandgap and an enhancement (up to three times) in the optical oscillator strength of confined carriers. The reported quantum confinement effects have been exploited to enhance light detection by Ge quantum wells, as demonstrated by photodetectors with an internal quantum efficiency of 70%. 相似文献
77.
Gianni Zoccatelli Michela Sega Michela Bolla Daniela Cecconi Patrizia Vaccino Corrado Rizzi Roberto Chignola Andrea Brandolini 《Food chemistry》2012
The aim of the work was to characterize the expression of various α-amylase inhibitors (αAIs), well known anti-nutritional compounds, for the development of healthier diploid wheat-based functional foods. 相似文献
78.
Corrado Sciancalepore Federica Bondioli 《International Journal of Applied Ceramic Technology》2015,12(3):679-684
The aim of this investigation was the evaluation of the durability of photocatalytic sol–gel coating deposited on industrial ceramic tiles. In particular, the effect of substrate roughness on photocatalytic performance before and after different aging tests was determined. The results showed that the photodegradation process was clearly affected by the surface roughness of the substrate. In particular, the smoother surface had a higher photocatalytic activity, faster hydrophilicity but a lower durability to abrasion with respect to the matt surface. 相似文献
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