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and system
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  系统
     Public Key Infrastructure:Study of Certificate Status Information Distribution Method and System Design
     PKI:证书状态信息分发方法研究和系统设计
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     Algorithms Research and System Design for Vector Field Visualization
     矢量场可视化算法研究与系统设计
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     Neural Network Models of Soil Erosion and Runoff in Slope and System Dynamics Model of Sediment Field in a Watershed
     坡面产流产沙神经网络模型与流域产沙系统动力学模型研究
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     Commercial Bank Risk Management Basic Reserarch and System Development Based on Value-at-Risk
     基于风险价值的商业银行风险管理理论研究与系统开发
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     Foundation and System Research of Modern Enterprise Human Resources Management
     现代企业人力资源管理基础与系统研究
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  体系
     The Study on the Mode and System Development of Rural Logistics of China
     中国农村物流模式及体系发展研究
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     A Study on the Effect and System of Agricultural Subsidization Policy in China
     中国农业补贴政策的效果与体系研究
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     On the Property,Task and System of the Teaching Method of Mathematics for Middle School
     试论中学数学教学法的性质、任务和体系
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     Geological Factors and System of Indices for Urban Land Evaluation of Geology-Economy
     初论城市土地地质经济评价的因素和指标体系
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     Automatic Generation of Mechanisms and System Reliability of Frames
     框架机构的自动生成及体系可靠度
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  “and system”译为未确定词的双语例句
     Socialist Theory of Income Distribution and System of Income Distribution in the Primary Stage of Socialism
     社会主义收入分配理论与社会主义初级阶段收入分配制度
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     Research on the Old Age Security System in China: Theoretical Foundations, Value Orientation and System Selection
     中国老年保障制度研究:理论基础、价值取向与制度选择
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     Studies on the Management and System Integration Based on XML/Web Services for the Lunar Exploration
     基于XML/Web Services的月球探测数据管理与集成技术研究
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     The Effect Analysis and System Design of China's Income Tax
     我国所得税的效应分析与制度设计
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     Analyse on Behavior and System Arrangement in Sustainable Development
     可持续发展的行为分析与制度安排
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  and system
By introducing additional slack variables, a new mixed H2/H∞ performance criterion is proposed, which provides a decoupling between the Lyapunov matrix and system matrices.
      
A sliding mode perturbation observer (SPO) is designed to estimate unmeasurable states and system perturbations that involve system nonlinearities, disturbances and unmodelled dynamics.
      
A consistent terminology and system of hair and spine cortex and medulla is proposed.
      
Such system ensures coordinated changes of the signaling system and system of signal perception as new adaptations appear, which automatically provides for reproductive isolation within a limited number of generations.
      
On the origin of avian flight: Compromise and system approaches
      
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The basic equation for prediction is used,that is the baratropic vorticity equation and balance epuae tion.And stream function is introduced into these equation on the assumption of nondivergent. A system of equation for prediction is obtained on the following method:the typhoon field is divided into two parts,that is,the circular symmetric field.With respect to the center of the typhoon and the residual general field.And two halance equations and two vorticity equations corresponding to these field are...

The basic equation for prediction is used,that is the baratropic vorticity equation and balance epuae tion.And stream function is introduced into these equation on the assumption of nondivergent. A system of equation for prediction is obtained on the following method:the typhoon field is divided into two parts,that is,the circular symmetric field.With respect to the center of the typhoon and the residual general field.And two halance equations and two vorticity equations corresponding to these field are solved respectively.Thus,we get two systems of equations corresponding to two field,that is, (?) Where ▽=the horizontal gradient operator, J(A, B)=Jacobian determinant of A and B. The system of equations(Ⅰ)is solved by Adem’s method.And system of equations is solved by aumerical method.

预告所用的基本方程是正压涡度方程和平衡方程。且根据无辐散假设把流函数引入了这些方程。预告方程组是根据如下的方法得到的:把台风■分成两部分,即关于台风中心的圆对称■和剩余■。且对相应于这些■的两个平衡方程和两个涡度方程分别求解。于是,我们得到了相应于这两个■的两个方程组,它们是:■此处▽是水平梯度算子。J(A,B)是 A 和 B 的雅可比函数。方程组(Ⅰ)是用 Adem 的方法求解,方程组(Ⅱ)是用数值方法求解。

In this paper, some problems for Large Scale Systems theory are discussed. There are: what the Large Scale System (LSS) is; the relationship between LSS' theory and control theory; the relationship between LSS' theory and System Engineering; the relationship between LSS' theory and Cybernetics; the special problems of LSS' theory. In author's opinion, LSS' theory is the important part of the third age of control theory, i.e. the fundamental of the total complex automation. On the other hand,...

In this paper, some problems for Large Scale Systems theory are discussed. There are: what the Large Scale System (LSS) is; the relationship between LSS' theory and control theory; the relationship between LSS' theory and System Engineering; the relationship between LSS' theory and Cybernetics; the special problems of LSS' theory. In author's opinion, LSS' theory is the important part of the third age of control theory, i.e. the fundamental of the total complex automation. On the other hand, LSS' theory is the new stage of development Systems Engineering——Dynamical Systems Engineering. It may also be said, LSS' theory is the new branch of cybernetics ——LSS' Cybernetics. LSS' theory is not the classification of the size of various systems, but it's the methodology of the analysis and synthesis of large complex control and information system. It is the system science of large scale systems.

本文讨论关于大系统理论的几个问题,即:什么是大系统?大系统理论与控制理论的关系;大系统理论与系统工程的关系;大系统理论与控制论的关系;大系统理论的特殊问题。作者认为,大系统理论是第三代控制理论的重要内容,是综合自动化的理论基础。另一方面,大系统理论也是系统工程发展的新阶段——动态系统工程。也可以说,大系统理论是控制论的新分支——大系统控制论。大系统理论不是关于系统大小的分类学,而是大规模复杂控制与信息系统分析和综合的方法学,是研究大系统的系统科学。

Root systems and above ground biomasses of 33 Chinese fir sample trees were studied. Results showed that the distribution of Chinese fir roots depend on soil bulk density and system of cultivation. The root of Chinese fir is aerobic and intolerent to waterlogging. It prefers fertile soil but is weak in competition with other plants.

本文记述了在杉木根系研究中采用的方法——重量法。按照这一方法于1973—1979年间在苏南丘陵区调查了33株2—20年生杉木的根系及地上部分生物产量。研究结果表明: 一、丘陵区杉木根系分布的特点具有明显的浅根性,根系主要集中分布于0—20厘米的土层内(占根量的80%);根系分布因土壤容积重和营林措施的不同表现出一定程度的可塑性,即土壤容积重愈大,根系愈集中土壤表面,地上部分生长愈差,深翻能减轻土壤容积重,促进杉木根系分布位置有一定程度的下移。 二、杉木根系具有明显的趋肥性、好气性、怕水渍和与杂草竞争能力弱等生态特性。 三、杉木根量(ω)的大小与树高(H)之间呈幂函数关系:(ω=3.430H~(1.3686) 四、杉木地下与地上部分生物量之间的比例关系(地下:地上=1:y),随树高(H)而变,呈对数曲线关系:y=0.3067+3.5321lgH。 掌握了杉木树高与根量,树高与地下和地上部分的比例关系后,只要测出林分平均高就能粗略地计算出林分的生物产量。

 
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