进行缓慢的

Chapter 5 deals with the solvable theorem of adaptive inverse optimal control problems for a class of stochastic nonlinear systems driven by Wiener noises of unknown covariance. The systems are depicted by It〓 stochastic differential equations. By using an adaptive backstepping algorithm and stochastic control Lyapunov functions, the designing procedure of control laws of global asymptotic stability in probability and adaptive inverse optimal stabilization in probability are presented systematically. Adaptive control laws and parameter update laws can be obtained at the same time by this design scheme.

在第5章中，针对具有方差不确定Wiener噪声扰动和未知定常参数的随机非线性系统（假设方差的F—范数是一个常数或一个缓慢变化的量，对其进行在线辨识），给出并证明了自适应逆最优控制问题可解定理，基于随机Lyapunov定理和It〓微分规则，采用自适应Backstepping设计方法，系统地设计了全局依概率渐近稳定和自适应逆最优控制策略，这种设计方法可同时获得控制策略和自适应律，计算机数值仿真结果表明该控制算法是有效性的。

BACKGROUND: The technique of isolation and culture of human scalp dermal papilla cells is basic to study hair follicle biology. At present,microdissection to isolate the dermal papillae and culture DP cells is a primitive method,which has many drawbacks,such as laboriousness,low efficiency,uneasy adhesion and poor growth.

背景：毛乳头细胞的分离培养技术是研究毛囊细胞生物学的基础，目前采用的显微解剖法分离毛乳头进行毛乳头细胞传代培养是一种原始的方法，存在着分离效率低、劳动强度大、毛乳头贴壁率低、细胞生长缓慢等缺点。

It considers the movability ofdomain walls and the giant effect of demagnetic field on themagnetizing procedure.

依据自由能最小值原理进行的计算得到了磁致伸缩在磁畴预排列下出现的Jump效应，以及跳跃以后的一个缓慢上升过程。

In conventional sexual hybridization of citrus, nucellar polyembryony, pollen/ovule sterility, genetic heterozygosity, wild sexual incompatibility of most citrus cultivars make it very time-consuming and low efficiency to improve fruit characters.

但是，由于柑橘类植物中存在的珠心胚现象、一些品种中的雌雄性败育、童期过长、远缘有性杂交不亲和等特点使通过传统的有性杂交方式进行品种改良进程缓慢，效率不高。

The calculating results which predict that the tip undercooling decreases continuously with an increase of the primary spacing and no minimum undercooling exists have lent an obvious evidence to the above theoretical analyses. The tip undercooling changes sharply for the low primary spacings but slowly for the large spacings.

本文提出的数值模型表明，Peclet数较小时，可以将强制性枝晶生长处理成自适应边界条件进行数值计算；计算结果充分证实了上述的理论分析，并指出顶部过冷随一次间距的增大而连续减小，不存在最小过冷值；一次间距较小时顶部过冷变化显著，较大时变化缓慢。

Hematolytic staphylococcus, staphylococcus epiderrnidis, torpidity staphylococcus, squirrel staphylococcus and mimicry staphylococcus were the top five pathogenic bacteria.

结果 在所进行的8220次细菌学检测中共发现1320株阳性细菌，其中发现202株CNS，占总体检出率的15.3％（202／1320），其中溶血葡萄球菌、表皮葡萄球菌、缓慢葡萄球菌、松鼠葡萄球菌、模仿葡萄球菌等为主要的前5位致病菌。

Aiming at slope types, features, deformation traits and destroy mechanism of high steep valley slope at Jinping Ⅰ Hydropower Station, and applying monitoring results, a comprehensive prediction design is suggested. In the space, according to the occurrences of unfavorable geological phenomena such as faults F5, f(subscript 42-9) deep fracture SL(subscript 44-1) and lamprophyre vein X, all of them can be treated as the boundary conditions for slides, potential instable blocks of slope on the left abutment are estimated which take on a wedge-shaped sliding model. In the sametime, through using three kinds of joint prediction methods such as statistic models and nonlinear models, judging from the shape of curves of deformation-time and their deformation velocities, it is found that the slope is at the state of slowly creeping to uniform deforming with a deforming velocity of 0.05 mm/d.

针对锦屏一级水电站左岸高边坡的边坡类型、边坡特征、变形特点和变形机制，在监测成果的基础上，对其进行综合预报，空间上判断左岸拱肩边坡由断层F5，f(下标 42-9)、深部裂缝SL(下标 44-1)及煌斑岩脉X互相组合，形成可能边坡失稳块体的边界条件、楔型体滑移失稳模式：时间上采用统计模型及非线性模型多种方法联合预报，根据边坡变形时序曲线的形态及变形速率指出：边坡目前处在缓慢蠕动至匀速变形阶段，变形速率小于0.05mm/d。

This paper, based on the land utilization change data during 1997 to 2005, applies the information entropy and equilibrium theory to study the temporal-spatial changes in land utilization structure in Lingshui county, with results indicating: a first slow and then a fast rise in information entropy of land utilization structure in Lingshui county and a general trend of rising homogeneity in land utilization structure; the information entropy of land utilization structure ascends from NW to SE, where can be divided into five regions, ecological protected area, resort area, farmland protected area, ecological agricultural construction area and comprehensive industrial developing area; the economic factors and populational structure play a key part in land utilization structure changes via principle componential analysis.

基于陵水县1997-2005年土地利用变更数据，利用信息熵和均衡度的基本原理，对陵水县土地利用结构的时空变化进行实证分析。结果表明：1陵水县1997-2005年土地利用结构信息熵和均衡度呈现先缓慢增长、再加速增长的变化过程，总趋势是土地利用结构的均质性逐渐增强；2）陵水县土地利用结构信息熵从西北向东南逐渐递增，依次可分为生态保育区、风景旅游区，基本农田保护区、生态农业建设区和综合产业发展区5个区域；3）利用主成分分析，经济因素和人口结构对陵水县土地利用结构变化影响重大。

Based on the background information on the part of the existing strategy adopted by the Beijing Gas Group, this paper conducts a detailed analysis of strategic issues of this group company by using such analytical tools as SWOT Matrix, Boston Matrix and Portor's Five Forces Model. The author discusses the status in quo of global gas market and domestic market, the internal environment of the group company, and the structure of gas industry. The major strategic problems of the group company are summarized on the basis of above-analysis, including the obsolete thoughts of decision makers, the weak management system of human resources, the deviation on building corporate culture, and the teetering on information processing.

论文在阐述燃气集团公司战略背景的基础上，采用SWOT矩阵、波士顿矩阵、波特竞争力模型等工具和方法，从燃气行业战略发展的角度出发，对全球燃气市场、国内燃气市场、燃气集团公司内部环境，以及产业结构进行分析，指出燃气集团公司目前在战略管理上存在的主要问题，如观念陈旧、人力资源开发和管理体系薄弱、企业文化建设的偏差、信息化进程缓慢等等。

To solve the problem of superheat and slow warm-up in the transportation of automobiles,we refits the engine with electric control pump.

针对当前汽车运输中普遍存在的预热缓慢和过热现象，在汽车发动机上进行了电控冷却水泵的改装试验，缩短了预热时间，避免了过热现象的发生。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。