منابع مشابه
Graph-Based Multi-Tweet Summarization using Social Signals
We study the multi-tweet summarization task, which aims to find representative tweets from a given set of tweets. Multi-tweet summarization allows people to quickly grasp the essential meaning of a large number of tweets. It can also be used as a pre-processing component for information extraction tasks on tweets. The challenge of this task lies in computing a tweet’s salience score with little...
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【摘要】 研究背景 细胞在新陈代谢和完成各种生理功能过程中,不断面临着细胞内外渗透活性分子在细胞内外的流动,从而不断产生细胞内外渗 透压的变化,使细胞处于不断变化的渗透梯度中。由于细胞对水的自由通透性,水分会依据渗透梯度通过渗透或水通道流入或流出细胞,从而产生 细胞容积的变化。可见既使在正常生理条件下,细胞的容积也处于不断的变化中,与此相适应,许多细胞进化了自身的细胞容积调节功能,即当细 胞受到非等渗刺激而产生容积增大或缩小时,细胞自身会通过调节机制使变化了的细胞容积向正常体积恢复。细胞的容积调节功能在细胞的免疫应 答、细胞的迁移、细胞的增殖与分化过程中具有十分重要的意义。 细胞的容积调节功能主要包括两种:一种为调节性细胞容积增大(regulatory vol ume increase,RVI),指当细胞受到高渗透压的刺激而皱缩后,细胞能够调节性的使已经皱缩的细胞体积向正常体积恢复;...
متن کامل[Evaluation of clinical therapeutic effect for traditional Chinese medicine].
传统中医药临床疗效评价的重要性在于 : ( 1) 科 学传承中医药优秀的临床实践经验 ,以代代相传 , 更 好地为病人服务 ; ( 2) 探索和建立符合中医药特点的 评价参照系 , 以更加贴切地反映中医药学术特色 ; (3 )对虚假和不实事求是的评价以及评价不当者予 以纠正。 评价医药疗效应强调四性 ( 4R ) : ( 1 ) 合理性 ( ra tionality ) :其理论思维、病证结合的评估标准以 及统计学要求合理 ; ( 2) 重复性 ( replication ) :其疗效 结论主客观误差小 , 经得起他人重复 ; ( 3 ) 随机性 ( randomization) :设计/ 观察/ 验证及后续都能体现 ; (4 )代表性 ( represen tativeness ) : 基本可以反映当代 实际医疗水平。 评价疗效的标准要求 : ( 1) 应采用合理的国际及 国内统一...
متن کاملA Unified Framework for Discourse Argument Identification via Shallow Semantic Parsing
This paper deals with Discourse Argument Identification (DAI) from both intra-sentence and inter-sentence perspectives. For intra-sentence cases, we approach it via a simplified shallow semantic parsing framework, which recasts the discourse connective as the predicate and its scope into several constituents as the argument of the predicate. Different from state-of-the-art chunking approaches, ...
متن کاملThe milk fat globule membrane as an ingredient: why, how, when?
This paper presents a personal view on the potential applications of the milk fat globule membrane as an ingredient in the processed foods area. Several factors are of importance for this dissertation: the biological origin of the membrane, the voluminous literature on its individual components and their relationship with health and wellness, the biological role of milk in nutrition to mammals ...
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ژورنال
عنوان ژورنال: Chinese Science Bulletin
سال: 1991
ISSN: 0023-074X
DOI: 10.1360/csb1991-36-17-1281