نتایج جستجو برای: single extraction

تعداد نتایج: 1024580  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران - دانشکده علوم 1381

تاکسونهایی از گروه گو نهای خاردار در ایران جهت بررسی برخی الگوها تکاملی از لحاظ ریخت شناسی و کاریوتیپ مورد مطالعه قرار گرفتند. در این بررسی ریخت شناسی 35 صفت برای ‏‎otu‎‏ 12 مورد نظر مطالعه و ماتریس اطلاعات حاصل از طریق روشهای آنالیز فاکتور و خوشه بندی های ‏‎single linkage , upgma, ward‎‏ مورد تجزیه و تحلیل قرار گرفتند نتایج ‏‎ward , upgma‎‏ یکسان بود. همچنین نتایج ‏‎single linkage‎‏ با روش آنا...

Journal: :Pattern Recognition Letters 2008
Youngjoong Ko Jungyun Seo

This paper proposes an effective method to extract salient sentences using contextual information and statistical approaches for Text Summarization. The proposed method combines two consecutive sentences into a bi-gram pseudo sentence so that contextual information is applied to statistical sentence-extraction techniques. Salient bigram pseudo sentences are first selected by the statistical sen...

2012
ALI A. UKASHA AHMED B. ABDURRHMAN

This paper presents a method of contour extraction and compression from grey level image. The proposed algorithm is applied in spectral domain using single-level wavelet transform (WT). Single step parallel contour extraction (SSPCE) method is used for the binary image after inverse wavelet transform is applied to the details images. Then the contours are compressed using either Ramer or Trapez...

Journal: :progress in biological sciences 2015
faezeh fatemi abbas rashidi samaneh jahani

bioleaching is the extraction of metals from their ores through the use of microorganisms. inthis process, the use of native bacteria leads to achieve more yields of metals. so, in the presentstudy, native sulfur-oxidizing bacterium in potentiality of uranium extraction was isolated fromghachin mine in iran and identified by partial gene sequencing. for this purpose, the watersamples were colle...

2012
Michael E. Reimer Gabriele Bulgarini Nika Akopian Moïra Hocevar Maaike Bouwes Bavinck Marcel A. Verheijen Erik P.A.M. Bakkers Leo P. Kouwenhoven Val Zwiller

The ability to achieve near-unity light-extraction efficiency is necessary for a truly deterministic single-photon source. The most promising method to reach such high efficiencies is based on embedding single-photon emitters in tapered photonic waveguides defined by top-down etching techniques. However, light-extraction efficiencies in current top-down approaches are limited by fabrication imp...

Journal: :Acta scientiarum polonorum. Technologia alimentaria 2014
Wei Liu Chun-Li Zhou Jing Zhao Dong Chen Quan-Hong Li

BACKGROUND 6-Gingerol is one of the most pharmacologically active and abundant components in ginger, which has a wide array of biochemical and pharmacologic activities. In recent years, the application of microwave-assisted extraction (MAE) for obtaining bioactive compounds from plant materials has shown tremendous research interest and potential. In this study, an efficient microwave-assisted ...

2013
Peng Chen Jianyi Guo Zhengtao Yu Sichao Wei Feng Zhou Xin Yan

Owing to the effect of classified models was different in Protein-Protein Interaction (PPI) extraction, which was made by different single kernel functions, and only using single kernel function hardly trained the optimal classified model to extract PPI, this paper presents a strategy to find the optimal kernel function from a kernel function set. The strategy is that in the kernel function set...

2014
Martin Axelsson Francesco Gentili

Microalgae produce a wide range of lipid compounds of potential commercial interest. Total lipid extraction performed by conventional extraction methods, relying on the chloroform-methanol solvent system are too laborious and time consuming for screening large numbers of samples. In this study, three previous extraction methods devised by Folch et al. (1957), Bligh and Dyer (1959) and Selstam a...

2001
V. Shiltsev

We propose to use an electron lens for slow extraction of proton bunches from the Fermilab Main Injector. Negatively charged electron beam colliding with protons causes positive tune shift proportional to the electron current. If the resulting tune satisfies resonance condition, protons move to larger betatron amplitudes as in conventional slow extraction systems. Time variation of the electron...

2004
Chiori Hori Tsutomu Hirao Hideki Isozaki

Automatic summaries of text generated through sentence or word extraction has been evaluated by comparing them with manual summaries generated by humans by using numerical evaluation measures based on precision or accuracy. Although sentence extraction has previously been evaluated based only on precision of a single sentence, sentence concatenations in the summaries should be evaluated as well...

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