منابع مشابه
Investigation of Ion Channel Mechanism of Regulatory - Volume - Decrease
【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 کاملStacking Heterogeneous Joint Models of Chinese POS Tagging and Dependency Parsing
Previous joint models of Chinese part-of-speech (POS) tagging and dependency parsing are extended from either graphor transition-based dependency models. Our analysis shows that the two models have different error distributions. In addition, integration of graphand transition-based dependency parsers by stacked learning (stacking) has achieved significant improvements. These motivate us to stud...
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Beam-search and global models have been applied to transition-based dependency parsing, leading to state-of-the-art accuracies that are comparable to the best graph-based parsers. In this paper, we analyze the effects of global learning and beam-search on the overall accuracy and error distribution of a transition-based dependency parser. First, we show that global learning and beam-search must...
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Curve design on manifolds is very important in many applications. We propose a curve subdivision approach based on conformal mapping of manifolds. It is proved by experiments that the resulting curves in some sense have nice smoothness and inherite some properties of subdivision curves in 3 R space, such as the curves might interpolate or approximate the initial points. Some examples are provid...
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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, ...
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ژورنال
عنوان ژورنال: 建筑工程与管理
سال: 2020
ISSN: 2661-4413,2661-4405
DOI: 10.33142/aem.v2i5.2116