查询词典 mathematical models

From this point of view,it ispointed out that there are two kinds of commonalities among diverse prob-lems,one is the relative commonality and the other is the homogenous co-mmonality,and it is advanced that the approach to effectively make useof the relative commonality is to divide models suitably and to set up theorganic relation between models convenient to their composite conection oncondition that models are shared,and the approach to effectively make useof the homogenous commonality is from the view point of different problemsneeding their special models for solving,to convert their special modelrepresentation to comparatively general model depth representation on theprinciple of independence and share of commonality.The articles in thepast has made deep and complete research on model management in aspectssuch as model division and compositive conection,and a number of theoriesand methods are provided,but none of them is in relation to model depthrepresentation.

从这一角度出发，作者指出，在多样性问题中存在两种共性，一种是问题相关共性，另一种是问题同构共性，并提出有效利用问题相关共性的方法是在实现模型共享的前提下对模型进行合理划分和建立便于模型复合联接的各模型之间的有机联系，而有效利用问题同构共性的方法则是从不同问题求解本质上需要的专用模型出发，根据独立与共享原理，将这些专用模型表示转化成较为通用的模型深层表示，以往的文献在模型划分、复合联接等诸方面对模型管理进行了较为深入全面的研究，并从这一角度提出了许多模型表示的理论和方法，但对模型深层表示方面尚没有涉足。

Based on the information-scheduling models and time-delay models of networked control system, state-estimate-based and parity-relation-based fault diagnosis approaches and passive fault-tolerant control such as integrity control for networked control systems are presented; 2 we presented new models, Quasi T-S models, for linear and nonlinear networked control systems with random time delays, and the corresponding fault diagnosis and fault-tolerant control approaches; 3 With all these fault diagnosis theory presented, active fault tolerant control approaches are developed directly for networked control systems; 4 Some analysis, design and optimization theory for networked control systems are presented., such as robust control, LQ guaranteed cost control, modeling and control for stochastic networked control and integrated optimization etc.

给出了诸如网络化控制系统的鲁棒控制、LQ保成本控制、联合优化设计、随机网络化控制系统的建模与控制等方面的结果。

Methods: Bacterial infection mouse models were established by the peritoneal injection of Staphylococcus aureus and viral pneumonia mouse models by nose drip of influenza virus; Fever rabbit models were produced by vein injection of indotoxin. YZHH was used to treat these animal models.

采用小鼠腹腔注谢金黄色葡萄球菌的方法观察一枝黄花抗感颗粒的体内抗菌作用；采取流感病毒滴鼻致小鼠流感病毒性肺炎模型观察其对小鼠的抗病毒作用；采用家兔耳缘静脉注射内毒素致热的方法，观察其解热作用。

The objective was to reveal characteristics of nutrients accumulation and distribution in early and ratoon rice under different cultivation models; Dry weight and nutrients contents in the rice plants were determined at different developmental stages, using a new combination hybrid rice II Youhang 1 under super high-yield cultivation and conventional cultivation models;The results showed that the accumulated N, P and K in the plant were 15.06 g/m2, 4.58 g/m2 and 15.8 g/m2 at the fully ripening stage under SHC models, which were 47.2%, 21.2% higher and 9.1% lower than those under CC models respectively.

探讨不同栽培模式早稻-再生稻水稻的养分积累动态和分配特征；以杂交水稻新组合Ⅱ优航1号为材料，采用超高产栽培和常规栽培模式，通过测定水稻各生育期的干物质积累和养分含量变化；超高产模式头季稻稻株N含量在全生育期均高于常规模式，孕穗前稻株P含量、黄熟前及再生稻K含量亦明显高于常规模式。

In chapter 1, regression models with censored data, LSE for censored regression models and LAD estimation for models with fixed censoring point are introduced. Then, we state our main results for LAD estimator of nonlinear regression models with randomly censored data, including consistency, boundedness in probability and asymptotic normality. The proofs of our main theorems are given in detail. In chapter 2, we state the main difficulty of obtaining numerical solution for censored LAD estimation, and recall the history of studies on this problem including some anterior algorithms.

在第一章，首先介绍删失线性回归模型的基本概念和性质，并对已有的估计方法，如最小二乘估计、固定点删失的最小一乘估计等做了简单的回顾；然后，把固定点删失线性回归模型的最小一乘估计方法推广到了随机删失、非线性模型的情形，并得到了估计量的一些渐近性质，如相合性、渐近正态性等；最后，给出主要结果的详细证明过程。

One tanker truck before and after delivery were developed more than 110 bulletins models, load capacity ranging from 2-40T; high above the car were developed more than 30 bulletins models, ranging from a high from 12-25 meters; Tipper were developed more than 50 Notice of models tonnage ranging from 5-45T; special vehicle to develop models for more than 10 months notice, there are sanitation sweeper, garbage transfer vehicles, vacuum trucks welcome home, feed supply vehicle, high pressure washing cars and animal husbandry, agricultural machinery Cart and so on; for the national defense system designed to protect the overall self-loading and unloading Hooklift, military water trailer, six refueling military vehicles, airport vehicles oil recovery, multi-function blowing snow vehicles, field-value-added products such as fuel trucks are increasingly becoming the Product forces out loaded.

其中运加油车前后共开发110余个公告车型，承载能力从2—40T不等；高空作业车共开发30余个公告车型，高度从12—25米不等；自卸车共开发50余个公告车型，吨位从5—45T不等；特种车辆开发10余个公告车型，主要有环卫清扫车、垃圾转运车、真空洗尘车、饲料补给车、高压清洗车及畜牧、农用机械车等；为国防保障系统设计的整体自装卸拉臂车、军用水挂车、军用六管加油车、机场油料回收车、多功能吹雪车、野战加油车等高附加值产品正越来越多地成为部队的列装产品。

In order to clearly recognize the geophysical response of carbonate reservoir,based on preliminary recognition of Ordovician carbonate reservoir under the basal surface in Tahe oilfield,some regular vug models and random arranged vug models were designed and built. The variable-grid finite difference method was used to simulate the seismic wave propagation in these models. Then,the seismic records of the models were analyzed and the effect to seismic reflections caused by vug is studied. The impact rule of regular vug scale and random arranged vug density on seismic attributes was obtained.

为了研究碳酸盐岩储层的地球物理响应特征，在对塔河油田奥陶系风化面下碳酸盐岩储层初步认识的基础上，利用随机介质建模技术，设计并建立了一系列碳酸盐岩储层规则孔洞和随机孔洞模型，并应用变网格有限差分法对地震波在孔洞模型中的传播进行了正演计算，对模拟得到的地震属性进行了分析，研究了孔洞对地震反射特征的影响，获得了规则孔洞尺度以及随机排列孔洞密度对地震属性的影响规律。

Thorough analysis of the present hydrate models as the base , contrapose to the deficiencies of present models, we have build a universal natural gas hydrate model base on the state equation which can be used in electrolytical and polarity inhibitors, realized the unite of electrolyte models and alcohol models.

在深入剖析目前水合物模型和实验的基础上，针对现有模型的不足，基于状态方程建立了一个适用于含电解质和极性抑制剂的通用天然气水合物计算模型，实现了电解质与醇类模型的统一。

We mainly discuss three types of inpainting models: the Bayesian model, geometric models and PDE models with emphasis on investigating TV inpainting, elastica inpainting and Mumford- Shah inpainting of PDE models. After studying the level set method and its applications to image processing, we concentrate on discussing the inpainting model...

在介绍水平集法及其在图像处理方面的应用之后，进一步深入地讨论了一类图像修复的变分模型—Mumford-Shah-Euler模型，在此基础上利用水平集法，提出MSE模型的数值逼近的算法格式，并对一些具体的图像修复问题开展数值模拟和修复，深入分析了MSE模型及水平集法在图像修复中的优缺点，这些结果在理论和实际应用中都很有意义。

Based on the achievements and developm ents in studying natural gas hydrates at home and abroad,the mechanism of causi ng the oil and gas reservoirs to be tightly sealed by the natural gas hydrates i s systematically analyzed in the paper through discussing the formation mechani sms,evolution properties and distribution laws of the natural gas hydrates.In li ght of the research on their control effects on petroleum accum ulation and reservoir preservation,several geologic models of oil and gas accumu lation and preservation related to the natural gas hydrates are proposed,such as vertically and laterally screened models,screened-by-drape and screened-by- contact models and syngenetically and epigenetically screened models,etc.

以国内外天然气水合物的研究成果和进展为基础，通过讨论天然气水合物的形成机制、演化特征以及其分布规律，系统分析了天然气水合物可以得天独厚地封盖油气藏的机理，探讨了其对油气藏尤其是气藏聚集和保存的控制作用，提出了天然气水合物聚集和保存油气的多类地质模式，如垂向遮挡和侧向遮挡、披覆遮挡和接触遮挡以及同生遮挡和后生遮挡等。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。