نتایج جستجو برای: extractive materials

تعداد نتایج: 439320  

Journal: :Science 2007
Christian Rutz Lucas A Bluff Alex A S Weir Alex Kacelnik

New Caledonian crows (Corvus moneduloides) are renowned for using tools for extractive foraging, but the ecological context of this unusual behavior is largely unknown. We developed miniaturized, animal-borne video cameras to record the undisturbed behavior and foraging ecology of wild, free-ranging crows. Our video recordings enabled an estimate of the species' natural foraging efficiency and ...

2014
Giuseppe Di Fabbrizio Amanda Stent Robert J. Gaizauskas

We present a hybrid method to generate summaries of product and services reviews by combining natural language generation and salient sentence selection techniques. Our system, STARLET-H, receives as input textual reviews with associated rated topics, and produces as output a natural language document summarizing the opinions expressed in the reviews. STARLET-H operates as a hybrid abstractive/...

2009
Fei Liu Yang Liu

Most previous studies on meeting summarization have focused on extractive summarization. In this paper, we investigate if we can apply sentence compression to extractive summaries to generate abstractive summaries. We use different compression algorithms, including integer linear programming with an additional step of filler phrase detection, a noisychannel approach using Markovization formulat...

2017
Ramesh Nallapati Feifei Zhai Bowen Zhou

We present SummaRuNNer, a Recurrent Neural Network (RNN) based sequence model for extractive summarization of documents and show that it achieves performance better than or comparable to state-of-the-art. Our model has the additional advantage of being very interpretable, since it allows visualization of its predictions broken up by abstract features such as information content, salience and no...

1996
Saroj K. Pal Pulok K. Mukherjee Kakali Saha M. Pal B.P Saha

The macroscopic character of the leaflets ash values extractive values by different solvent extractive behavior on treatment with different chemical reagents fluorescence characters by treatment with different chemical reagents of the powdered leaves of Maoringa oleifera lam (fam moringaceae) were studied to fix some pharmacognostical parameters, chemical group test of different extracts of the...

    Given the increasing number of documents, sites, online sources, and the users’ desire to quickly access information, automatic textual summarization has caught the attention of many researchers in this field. Researchers have presented different methods for text summarization as well as a useful summary of those texts including relevant document sentences. This study select...

2011
Adriana Avil es Martínez Jaime Saucedo-Luna Juan Gabriel Segovia-Hernandez Salvador Hernandez Fernando Israel Gomez-Castro Agustin Jaime Castro-Montoya

Bioethanol is among the most promising of biofuels because it has an energy content similar to gasoline while generating lower pollutant emissions than gasoline. But, in order to be used as an automotive fuel mixed with gasoline, ethanol must have less than 0.5 wt % of water. To achieve required ethanol purity, in light of the fact that the ethanol water mixture forms an azeotrope, unconvention...

2008
Shouyuan Chen Yuanming Yu Chong Long Feng Jin Lijing Qin Minlie Huang Xiaoyan Zhu

This paper presents our extractive summarization systems at the update summarization track of TAC 2008. We proposed two novel methods, one is based on the information distance theory, and the other is based on the sentence centrality which derives from the centrality concept in the graph theory. The evaluation results show that the two submitted runs are very competitive to generate extractive ...

2012
P.Srilakshmi D.Sailaja

This paper reports physicochemical studies in fungal infected galls of Pongamia pinnata. The parameters assayed were Total ash, acid insolubility and water solubility values and extractive values (Alcohol, water and petroleum ether). Fungal infected galls showed significantly higher value of ash, acid insolubility and low water solubility and high extractive values (petroleum ether and water) w...

2017
Dasari Rekha Puthalapattu Reddy Prasad Neelam Yughandhar Sreedhar

A novel analytical reagent, 4-(2-hydroxyphenylethamino)benzene-1,3-diol was synthesized for determination of nickel(II) in biological samples and plant materials by extractive differential pulse polarography. The analysis of nickel(II) was carried out by extracting the nickel(II)-(4-(2-hydroxyphenylethamino)benzene-1,3-diol) complex from chloroform prior to injecting into the instrument. The el...

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