向性

In this paper, using directed acyclic graph to represent the partial order constraints between these tasks in the system, a model of real time system is established with task attributes. a schedulability test algorithm for these tasks in the system is presented based on a series of theoretical analyses without preemption.

使用有向循环图来描述任务间的偏序关系，在以任务属性为参数的实时系统模型基础上，通过理论分析了在非抢占的条件下，这类系统中非周期任务和与之成偏序关系的严周期任务间的可调度性判定方法。

Objective:To study the adipogenous potential of endothelial cells derived from SD rat adipose tissue.

目的：研究脂肪源性内皮细胞向脂肪细胞的分化潜力和过程。

The vertical distribution of soil animal community in ubalpine coniferous forest in western Sichuan still had surface accumulation, but had the tend of adown moving.

川西亚高山针叶林土壤动物群落垂直分布仍具有表聚性，但有向下层移动的趋势。

With the use of a robust error mapping function, an affine model-based target tracking algorithm is formulated, in which a quasi-Newton's iterative method is implemented in the optimization progress.

算法中使用的"由粗至精"计算策略以图像金字塔数据结构为基础，采用自顶向下的计算顺序，并在每层金字塔上结合对鲁棒性误差映射函数中控制参数所做的逐步降级处理，实现了逐步求精的计算目的。

Climacteric is a necessary organic process for women and also a natural period from sexual maturity to agedness.

围绝经期是妇女必经的生理过程，是从性成熟期逐渐向老年期过渡的自然时期。

This article analysiss the reasons to the problems of peasant-workers such as being discriminated, the deficiency of the right to work, the unstable equivalence in social psychology and so on, besides from historical , ideal aspects to systematic aspect. It plays an emphasis on the cult rural philosophy: it says that the critical factor of peasant-workers problem is the transition chassis of their living style. That is to say, it arises during the period from the tradition agriculturist civilization to modern industrial civilization.

本文针对农民工群体在社会转型期产生的诸如受歧视、劳动权益缺失、社会心理失衡等主要问题，除了从一般的历史性、观念性、体制性等分析其成因外，主要从文化哲学的角度指出，农民工问题的实质是生存方式转换的危机问题，是在中国传统农业文明向现代工业文明的转型过程中不断敞开的。

During the postgenomics era the information about genomic sequence and gene functions provides a new foundation for evolutionary biology and ecology As the first whole-genome sequenced plant Arabidopsis thaliana and its wild relatives have played a critical role in understanding the evolution of genomics and speciation Both A halleri and A lyrata are closely related to the model species A thaliana A halleri ssp gemmifera occurs in northeastern China Japan and Taiwan; while its sister A halleri ssp halleri is mainly distributed in Europe Geographical barriers such as Tienshan Mountain Range isolate these intraspecific sisters Likewise A lyrata ssp kamchatica and ssp lyrata occur in East Asia and North America respectively Such distribution patterns seem to be consistent with allopartic speciation The comparison between ancestral and extant polymorphism by multilocus can be informative about the population genetics of speciation In this study we collected and analyzed DNA sequences of 98 genes from four wild relatives of A thaliana A halleri ssp gemmifera A halleri ssp halleri A lyrata ssp kamchatica and A lyrata ssp lyrata The ancestral states of these four species were compared to each other in terms of level of genetic variation However the ancestral species at the time of speciation were substantially more polymorphic than the extant geographical populations The observations are not fully compatible with speciation by strict allopatry At some species pairs parapatric speciation seems more reasonable in speciation of Arabidopsis The 98 gene sequences are also used for the congruence test between gene genealogy and species phylogeny Only 28 genes support the species phylogeny but there are 23 genes supports another major genealogy { lyrata} thaliana Based on the phylogenetic position change of A lyrata ssp kamchatica and Ks value for each species pair suggested the recent directional gene flow between A halleri ssp gemmifera and A lyrata ssp kamchatica

阿拉伯芥是第一个完成基因体定序的开花植物，其基因体资讯提供植物学研究的重要依据；在解析阿拉伯芥属物种的亲缘关系以及种化机制等重要的演化议题时，阿拉伯芥近缘的野生物种自然成了不可或缺的关键；跟阿拉伯芥近缘的物种包括A halleri及A lyrata，其中A halleri ssp gemmifera主要分布於中国东北、日本以及台湾，与近缘的A halleri ssp halleri其分布於欧洲隔著天山及大陆的障蔽，而A lyrata ssp kamchatica主要分布於东北亚及台湾，与分布於北美五大湖的A lyrata ssp lyrata被北极圈所分隔，这样的分布模式暗示异域种化的可能。藉由多基因分析比较祖先物种与现生物种遗传歧异度的相关可提供讯息探讨种化时期的族群遗传结构，本研究针对A halleri ssp gemmifera、A halleri ssp halleri及A lyrata ssp kamchatica、A lyrata ssp lyrata四个物种，两对互为亚种的姊妹群，以阿拉伯芥为外群进行研究，在四个物种完成98个同源基因的分子序列，利用套装软体MCMCcoal来估算祖先物种的遗传变异，亦估算现生物种的核苷酸歧异度，观察到？多物种配对中祖先物种遗传多型性大於现生物种DNA歧异度，显示异域种化模型并无法完全解释阿拉伯芥属物种的种化模式，在某些物种配对间邻域种化模式应比异域种化更为可能；在基因树与物种树的比较，98个基因片段的亲缘模式只有28个是与已知物种树一致的，有23个基因其树状图支持{ lyrata} thaliana的型式，藉由kamchatica位置的变化以及估算各物种配对间的平均同义置换率，推测在A halleri ssp gemmifera与A lyrata ssp kamchatica间具有近代的单方向基因交流。

The thinkers of the Lunyu School fully expressed their persistence of individualism and their reconsideration in literary modernity Yet the persistence and escape existed side by side, this mode of behavior and thinking indicated that the self-subject of the modern scholars was illusive and was hard to carry on when the modern scholars were covered by the powerful tradition and deeply controlled by modernity's consciousness of time Chapter Two Reconsidering on the character of modernity with leisure ampleness, resisting the human alienation caused by modern materialism and mechanism with humor, reaffirming the space of self-expression, which formed the humor, the leisure, the modern, and the aesthetic spirit implication of Lunyu School But the modern scholar's powerful inclining to the tradition made Lunyu School's aestheticism draw close to live in seclusion And its aesthetic modernity is also discounted for that reason Chapter Three It is the emotion and the leisure manner owning by the middle aged people that help to bring about Lunyu School's essay's adjusting in main key and moving massively in theme Lunyu School changed the way for "gaining the experience of life"in the twenties'prose It went from highly enthusiastic writings to reserved life-concerning and recite with appreciation in everyday life

第一章 三十年代左翼文学以其"新"、"进步"和"时代性"确立了自己的合理性地位，而时代思潮的转换、文艺与政治的日益密切使五四自由知识分子所坚持的个人主义成了"落伍""颓废"的表征。论语派自由思想者充分表达了对个人主义的执着、对文学现代性的反思，但坚持与逃逸并存的行为与思维模式表明现代士子在忧生伤世的强大传统笼罩下和一往无前的现代性时间意识的深刻控制下，个人主体的难以为继和虚幻性。第二章以闲适的余裕对奔竞躁进、汲汲功利、一往无前的现代性特征进行反思，以幽默对抗现代物质主义机械主义对人灵智的异化，重申自我表现的空间，构成论语派幽默闲适的现代性审美精神内涵。但现代文人对于传统的强大趋同力，则使论语派审美主义向隐逸文化靠拢，其审美现代性由此大打折扣。第三章中年情感与闲适气度直接促成论语派散文基调上的调整及主题的大幅横移，在趣味、游戏、幽默、闲适中改变了二十年代散文"问世"的径路，从意兴湍飞的激扬文字走向了沉潜适世的生命关怀与日常人生的吟味与咀嚼。

Longitudinal root sections of the wild type and the gls mutant cultured in nutrient solution for 4 days showed that biosynthesis and distribution of amyloplast in the columella cells of gls were normal as compared with the wild type, suggesting that root gravitropism loss in gls mutant is not caused by the defect in amyloplast sedimentation, but possibly by the disturbance of auxin transport and distributation.

4天龄的根系纵切片结果显示：突变体gls根尖结构完整，根尖柱细胞内淀粉粒的生成和分布正常，表明gls突变体根系向地性的缺失不是由于淀粉体的原因，而可能通过影响生长素运输和分布造成。

We discuss the floral design and floral display which are adapted to increase pollination of anemophily: at the period of blossom, when up the slope of a hill, the concentration of pollen decreases at first and then increases, and the concentration of pollen on horizontalhave no significant difference.

山核桃花部构成和开放式样对提高传粉效率有积极意义；散粉盛期，山核桃花粉浓度自山脚向山顶呈现出随高度的增加而减少，相同海拔高度花粉浓度不存在显著性差异。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。