不确定性

The integrated risk between hydraulic, hydrologic uncertainty and the construction scheduling uncertainty should be analyzed. The paper puts forward the risk analysis model for the construction scheduling and the risk analysis model for construction diversion on the assumption that the construction scheduling is affirmable. Thus the Monte-Carlo method is used to simulate the integrated risk of construction diversion system considering hydraulic, hydrologic uncertainty and the construction scheduling uncertainty.

以风险分析为核心，将各种不确定性因素辐合起来研究施工导流系统的综合风险，提出施工进度计划风险分析模型和假定坝体施工进度确定条件下的施工导流风险分析模型，在此基础上，建立基于Monte-Carlo方法全面考虑水文水力不确定性以及施工进度不确定性的施工导流系统综合风险分析模型。

First, the formal representation of the search environment is established, the multi-UAV is modeled as a controlled system and the predictive model of the system is presented. Considering the uncertainty of the sensor measurement and the environment, a Search Probability Map is defined and the updating method based on Bayes formula is presented. Based on SPM, information gain is defined to measure the search effects and used to be the optimization object in the predictive horizon. By using of GA, the solution of the optimization problem is got and it is taken as the input of the controlled system.

首先，建立搜索环境的规则描述，然后将多个UAV建模为一个控制系统，建立系统的预测模型，考虑到UAV传感器测量的不确定性和环境自身的不确定性，建立搜索概率图描述搜索环境的不确定性，给出了基于Bayes准则的搜索概率图更新方法，继而基于搜索概率图定义信息增益来衡量搜索效果，并将预测周期内的优化目标定为最大化信息增益，采用遗传算法进行求解，得到最优解作为被控系统的输入。

The class of nonlinear systems considered is referred to as a semi-strict feedback system and includes parametric uncertainties, input gain uncertainties and the unknown but bounded nonlinear function and disturbance.

论文所研究的非线性系统是一类广泛的半严格反馈系统，系统的不确定性包括有界的参数不确定性，有界的输入增益的不确定性以及未知但有界的非线性方程和外部干扰。

For the studies of GIS uncertainty, error band model of a line segment is one of the current focus issues, which reason is not only that there are many open questions for the uncertainty of line segment but also that the uncertainty of line segment is the base of both the uncertainty of the surface element and GIS spatial analysis.

对GIS不确定性的研究来说，线元不确定性的研究是一个重点，因为线元不仅是面域不确定性的基础，其本身也是GIG叠置分析、缓冲区分析和空间地址配对分析等的基本元素。

But this kind of entity may insurmountably have some uncertainties when it is expressed abstractly to the spatial object of GIS, and these uncertainties are the uncertain factors including error, inaccuracy, illegibility and so on.

但是这类实体在抽象描述为GIS的空间目标时难以避免地会带有一定程度的不确定性，这种不确定性指的是在进行抽象描述时随之产生的误差、不精确性、模糊性和含混性等不确定性因素。

According to Quine and others, the indeterminacy of meaning and the inscrutability of reference result in the indeterminacy of translation.

奎因等从哲学的角度提出意义的不确定性和指称的不可测知性导致翻译的不确定性。翻译的不确定性不仅限于言语行为上。

The connection degree is used for describing indeterminateness of the system,thus the assessment of the system is realized.

集对分析是一种处理不确定性问题的系统分析方法，在一个系统中确定性与不确定性相互联系、影响、制约，并在一定条件下相互转化，用联系度来描述系统的不确定性，从而实现系统的评价。

For the present,there are three kinds of uncertain analysis methods:stochastic analysis method, fuzzy analysis method and interval analysis method.

针对桥梁结构分析中的各种不确定性问题，对其进行了归类分析，给出了目前不确定性分析中的三种方法——随机分析方法、模糊分析方法和区间分析方法；对三种不确定性分析方法在桥梁结构分析中的应用领域进行了综述，并对三种方法的适用情况进行了分析说明。

Analysis of intension and extension of uncertainty information ;2. Determine gas log permeability by uncertainty information method;3. The majority difficulty for uncertainty system control is that agreements haven t been arrived in concept of uncertainty information and its characteristics, uncertainty system and its properties.

不确定性系统控制的难点在于：在控制工程界对什么是不确定性信息及其表现形式、不确定性系统及其特性等目前并未取得共识，往往在一些含混不清的概念基础上讨论控制问题，致使对不确定性系统控制的整个研究进展缓慢。

There are many influences for relation's uncertainty in spatial reasoning, and the three most important influences are the data uncertainty and acquiring difficulty of relation information and result uncertainty of spatial reasoning.

空间推理问题的不确定性的主要原因是数据的不确定性、关系提取的困难性和推理过程的不确定性，这三种不确定性因素都影响到了地理空间推理中的地图目标空间关系发掘和提取，同时，计算的复杂性也是影响地理空间推理系统应用的一个重要因素。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。