研究出
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The characteristics of postures, crown form, branch appearance and the leaf shape of Syringa oblata were analyzed by practical measurement of individual plant Mathematic method and model were adopted to analyze the sample data and deeply explore the vegetation quantity of Syringa oblata in Harbin. A quantitative method was put forward for vegetation quantity of Syringa oblata distributed in Harbin and the information management system of vegetation quantity of Syringa oblata for Harbin has been established.
本项研究选取了哈尔滨市园林绿化上数量最多、应用最广的木犀科丁香属植物中的紫丁香为研究对象,立足于哈尔滨市的环境特点,采用逐株实测的方法,具体分析紫丁香姿态、冠形、枝形、叶形的特点,采用数学方法和模型研究对紫丁香样本数据进行分析,并深入研究紫丁香"绿量"的内涵,探索出了哈尔滨市紫丁香"绿量"的量化方法,建立了哈尔滨市紫丁香绿量信息管理系统。
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This dissertation proposes group reasoning and group AHP-based GDSS structure and its decision steps to solve the problems existing in research of theory and application of GDSS. Besides, the dissertation also studies the method of group reasoning on rough-set and qualitative reasoning method basis in GDSS. It also studies on constructing method of hierarchy structure of group AHP in GDSS and combinative method of judgment matrixes. Moreover, it studies on method regarding construction of judgment matrixes on rough set based and optimization theory of convex combination parameters of judgment matrixes as well. Finally, it develops an AHP based GDSS to demonstrate the efficiency of these methods.(1) This dissertation also summarizes the developing trend of GDSS and analyses problems as regards the research of GDSS.
本论文针对GDSS理论研究及应用中存在的若干问题,提出了基于群体推理及群体层次分析法的GDSS结构,并给出了基于该结构的GDSS的决策程序;研究了GDSS环境下的基于粗糙集理论及定性推理技术的群体推理方法,并举例说明了方法的有效性;研究了GDSS环境下群体AHP层次结构的建立、判断矩阵集结的理论与方法;研究了判断矩阵凸组合系数的优化原理;探讨了基于Rough Set的判断矩阵构造方法;开发了一个基于AHP的GDSS原型系统,旨在验证本文关于GDSS环境下群体AHP有关方法的有效性。
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Precision coating is a very important process in manufacturing of thin films. Among many coating techniques, slot coating may be the most promising in developing high precision coating process due to its versatility and controllability. Fundamentals of slot coating have been studied by many pioneer researchers. However, two topics: use of polymer additives and discrete operation remained relatively largely uninvestigated, especially in terms of their basic mechanisms. These two topics are studied in this thesis using theoretical analysis and experimental methods.
精密涂布技术是未来薄膜技术的重要发展方向,在诸多的涂布技术中,狭缝式涂布是用途广泛且有深厚发展潜力的一项,前人的研究阐明了许多狭缝式涂布的疑难问题,然而,随著精密涂布技术的发展,高分子添加剂与非连续操作逐渐地应用於狭缝式涂布之中,这两个研究课题目前并未发展出适当的理论来说明其机制,本研究以理论与实验的方法对这两个课题进行研究。
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Then, the relation between vibration and sound, the acoustic holography method, the indeterminacy and identifiability of BSS, the BSS algorithm are discussed in detail. Based on above researches, the dissertation is divided in following four sections. The first section investigates the BSS algorithm suitable to acoustic feature separation. The algorithm of the joint approximate diagonalization of eigen-matrices is proposed. The spectra or the time-frequency distributions of source signals are the interesting features in ABD and they are separated from mixing signals by JADE algorithm. Then, the convolutive mixing model is transformed into a high-dimension instantaneous mixing model, and the deconvolution of source signals is achieved by the joint approximate block diagonalization of eigen-matrices. The proposed algorithm has a global minimum, and it is unsensitive to noise interference.
论文首先概述国内外声学诊断研究进展与盲分离研究进展,给出机器噪声声场与盲分离的数学描述,讨论了声振辐射、声全息、盲分离模型、盲分离可解性、盲分离结果不确定性、分离算法等基本问题,在此基础上,论文的研究工作分为以下四个部分:第一部分研究适用于声学特征分离的盲分离算法,提出基于特征提取的联合近似对角化盲分离算法,该算法以频谱特征或时频特征作为分离目标,从混合信号中分离源信号频谱特征或时频特征,最大限度地保留了与声学特征提取有关的频谱特征或时频特征,采用模型变换把卷积混合模型变换为一个高维瞬时混合模型,通过联合近似分块对角化算法实现源信号频谱特征与时频特征的盲反卷积。
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We explore the relation between structure and activity , structure and toxicity from electronic structure and three—dimensional conformation in order to provide theoretical foundations for predicting the activity and toxicity of these chemical compounds, researching into mechanism of action and choosing safener.
通过比较四种均三氮苯类除草剂的红外光谱特征吸收的实验值和计算值,并运用规范不变原子轨道法GIAO法在RHF/6-31G水平上计算出西玛津的δ~1H-NMR和δ~(13)C-NMR,与实验值的对比统计分析,结果表明:用RHF/6-31G优化的分子构型最佳,AM1法次之,考虑到优化时间和研究的需要,我们在研究均三氮苯类除草剂分子的结构与活性关系时,为了进行深入、精确的理论研究,采用从头算RHF/6-31G进行优化;而对于此类化合物的结构与毒性的关系研究时,更注重分子的量子化学参数的相对值而非绝对值,因而采用AM1的方法。
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The transition from the systemic inflammatory response syndrome to seere sepsis and septic shock inoles a myriad of pathogenic changes, including circulatory abnormalities that result in global tissue hypoxia.1,2 These pathogenic changes hae been the therapeutic target of preious outcome studies.12 Although this transition occurs oer time, both out of the hospital and in the hospital, in outcome studies interentions hae usually been initiated after admission to the intensie care unit.12 In studies of goal-directed hemodynamic optimization, in particular, there was no benefit in terms of outcome with respect to normal and supranormal hemodynamic end points, as well as those guided by mixed enous oxygen saturation.9,13 In contrast, een though we enrolled patients with lower central enous oxygen saturation and lower central enous pressure than those studied by Gattinoni et al.9 and with a higher lactate concentration than those studied by Hayes et al.,13 we found significant benefits with respect to outcome when goal-directed therapy was applied at an earlier stage of disease.
从全身炎症反应综合征转为严重脓毒症和脓毒性休克牵涉大量发病的变化,包括导致全身性缺氧的循环紊乱。这些发病的变化成为先前结果研究的治疗学目标。尽管这些转变随着时间的流失而逐渐出现,既可以在院外,也可在院内,在结果研究中,干预措施往往在进入ICU之后才启动。特别的,在那些目标导向血流动力学最优化研究中,依照结果,那些以正常或超正常血流动力学为终点的措施未能显示出益处,以混合静脉血氧饱和度为导向的研究同样如此。
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This thesis consists of three chapters .In chapter one , the distributions of the last exit time and the corresponding results of Brownian motion in Markov process are introduced ,and previous remarkable achievements on the excursion of Brownian motion are numerated too ,also ,we introduce the main results and the history of elliptic diffusion process; In chapter two ,we summarily describe the excursion in Markov process and the result of the first hitting time of the elliptic diffusion process ; In last chapter ,we study estimates for the distributions of above three maximum excursions and minimum excursion in the elliptic diffusion process on R (d≥3), which leads the excursion of Brownian motion on ball on R (d≥3) to become a particular case .
全文共分三章,第一章介绍对称Markov过程中布朗运动的未离时分布及相关研究结果,列举了前人对布朗运动的游程问题的研究成果,并用较多篇幅介绍了一类特殊且非常重要的扩散过程——一致椭圆扩散过程的研究历史和本文的主要研究结果;第二章介绍Markov过程有关停时及游程的概念,叙述了一致椭圆扩散过程的定义,并给出了一致椭圆扩散过程有关首中时的结果;第三章是本文的核心部分,详细讨论了暂留一致椭圆扩散过程关于R~d(d≥3)上球的三类极大游程和极小游程的分布估计,使得布朗运动关于球的游程问题成为特例。
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This thesis opines that there is few research on emotion, attitude and geistal ideation fostering especially on musical instruction design because the most of current researching on instructing system design is focuses on cognitive and rational ideation fostering by literature searching.
本论文首先对教学系统设计理论,进行了细致和系统的文献研究,总结出目前的教学系统设计理论研究成果基本上都是针对以认知和理性思维模式培养为主要目的的学科设计研究,对以情感态度和感性思维模式培养为主要目的的艺术学科,特别是专门针对音乐学科教学设计的研究成果很少。
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This paper addresses an essentiality and study methods about the system and gives out the results of calculation and design for the circuit at first,and then presents an electro-dynamical model to calculates key parameters and protracts thei.
电脉冲除冰系统是上世纪80年代以来新兴的飞机用电动-机械式除冰技术,国内关于该方面的研究起步较晚,文中在阐述了电脉冲除冰研究重要性和研究方法后,首先对电容充放电电路进行了分析与设计计算,接着给出电动力学模型,并计算了系统中感兴趣的关键参数,对计算结果进行处理后得到了能够指导设计的重要参数间的关系图,结合工程实例给予了分析与评价,提出了下一步研究解决的问题。
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Analysis the theory significance and the practical significance for enterprise management of China\'s government human resources, reorganizes domestic and foreign research with related, thus induces own anticipated research goal and certain research technique.
主要分析政府人力资源企业化管理研究的理论意义和现实意义,总结国内外与之有关的研究,从而归纳出自己预期的研究目的和一定的研究方法。
- 推荐网络例句
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Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".
歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车,和一双合并为一移交&整个lotta爱&。
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This is Kate, and that's Erin.
这是凯特,那个是爱朗。
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Articulate the aims, objectives and key aspects of a strategic business plan.
明确的宗旨,目标和重点战略业务计划。