Fuzzy output feedback control of nonlinear systems under sampled measurements

This paper studies the problem of designing an fuzzy feedback control for a class of nonlinear systems described by a continuous-time fuzzy system model under sampled output measurements. The premise variables of the fuzzy system model are allowed to be unavailable. We develop a technique for designing an fuzzy feedback control that guarantees the gain from an exogenous input to a controlled output is less than or equal to a prescribed value. A design algorithm for constructing the fuzzy feedback controller is given.     

Towards Proof Planning for ω

This paper describes the proof planning system _ω⁺ for the meta theorem prover for LF implemented in Twelf. The main contributions include a formal system that approximates the flow of information between assumptions and goals within a meta proof, a set of inference rules to reason about those approximations, and a soundness proof that guarantees that the proof planner does not reject promising proof states. Proof planning in _ω⁺ is decidable.     

I — an interactive program for calibrating activated sludge systems

I — an interactive program for calibrating activated sludge systems is formulated and demonstrated. The model involves a heuristic screening algorithm for exploring the system equations structure, analytical computations of the sensitivities of the variables to the model coefficients, analytical computations of the gradients of the objective functions selected for the calibration process, and a gradient interactive steepest descent minimization scheme. The methodology was implemented in an end-user PC program: I , that uses the TK S ® and M ® as computational engines, and as the shell. Applications to the activated sludge system models of (Argaman Water Research 29(1) and Argaman et al. (Journal of Environmental Engineering ASCE 125(7) (1999), 608-617) are presented.     

Design of optimal reduced order filters

This paper shows that the design of a reduced order optimal filter is equivalent to a frequency weighted norm model reduction problem.     

On the Comparison of Proof Planning Systems: , Ωmega and IsaPlanner

We present a framework for describing proof planners. This framework is based around a decomposition of proof planners into planning states, proof language, proof plans, proof methods, proof revision, proof control and planning algorithms.We use this framework to motivate the comparison of three recent proof planning systems, λCLaM, Ωmega and IsaPlanner, and demonstrate how the framework allows us to discuss and illustrate both their similarities and differences in a consistent fashion. This analysis reveals that proof control and the use of contextual information in planning states are key areas in need of further investigation.     

A Resolution-based Model Building Algorithm for a Fragment of =: (Extended Abstract)

1 [11] is a decidable subclass of first-order clausal logic without equality. [7] shows that 1 becomes undecidable when equational literals are allowed, but remains decidable if equality is restricted to ground terms only.First, we extend this decidability result to some non ground equational literals. By carefully restricting the use of the equality predicate we obtain a new decidable class, called 1 ₌^*. We show that existing paramodulation calculi do not terminate on 1 ₌^* and we define a new simplification rule which allows to ensure termination. Second, we show that the automatic extraction of Herbrand models is possible from saturated sets in 1 ₌^* not containing □. These models are represented by certain finite sets of (possibly equational and non ground) linear atoms. The difficult point here is to show that this formalism is suitable as a model representation mechanism, i.e. that the evaluation of arbitrary non equational first-order formulae in such interpretations is a decidable problem.     

: towards the modeling, design, control and execution of ETL processes

Extraction-Transformation-loading (ETL) tools are pieces of software responsible for the extraction of data from several sources, their cleansing, customization and insertion into a data warehouse. Literature and personal experience have guided us to conclude that the problems concerning the ETL tools are primarily problems of complexity, usability and price. To deal with these problems we provide a uniform metamodel for ETL processes, covering the aspects of data warehouse architecture, activity modeling, contingency treatment and quality management. The ETL tool we have developed, namely , is capable of modeling and executing practical ETL scenarios by providing explicit primitives for the capturing of common tasks. provides three ways to describe an ETL scenario: a graphical point-and-click front end and two declarative languages: XADL (an XML variant), which is more verbose and easy to read and SADL (an SQL-like language) which has a quite compact syntax and is, thus, easier for authoring.     

Formulas relating stability estimates of discrete-time and sampled-data nonlinear systems

We provide an explicit stability or input-to-state stability (ISS) estimate for a sampled-data nonlinear system in terms of the estimate for the corresponding discrete-time system and a function describing inter-sample growth. It is quite obvious that a uniform inter-sample growth condition, plus an ISS property for the exact discrete-time model of a closed-loop system, implies uniform ISS of the sampled-data nonlinear system. Our results serve to quantify these facts by means of comparison functions. Our results can be used as an alternative to prove and extend results in [[Reference to 1]] or extend some results in [[Reference to 4]] to a class of nonlinear systems. Finally, the formulas we establish can be used as a tool for some other problems which we indicate.     

广告设计教学实践与探讨 2012年10月9日

平面广告设计专业教学要“以人为本,充分发挥专业教师的主导作用,体现学生的主体地位”的素质教育已成为当今学校教学的主旋律.在广告设计教学课堂教学中应做到“以生为本”,充分相信学生,高度尊重学生,全面依靠学生,把学习的主动权交给学生,课堂上给学生提供了足够大的自主学习的空间,让学生在自主、动手、合作、探究、交往的氛围中去获取知识,把学生的学习潜能激发出来.倡导“低入”、“先做后学,先会后学”、“先学后教”、“以学定教”、“小组合作学习”的广告设计教学课堂.在现代艺术教育的学科建设中应该占有重要的位置.本文的主旨就是从建立顺应经济社会发展的教育教学理念为方向,分析提升广告设计教学存在的一些问题,提出了一些实践方法和设想.从多个方面对广告设计教学进行初步的探讨,希望能对以后的实践及教学起到一定的促进作用和参考价值.     

浅谈建筑施工噪声污染及防治方法 2012年10月9日

建筑工程现场施工的噪声污染很严重,给附近居民的身体健康以及周围的环境造成严重的损失,而且由于建筑施工现场的作业周期比较长,作业量非常大,建筑工程施工现场的噪音污染延续时间就比较长,由于城市的建筑物都比较密集,所以噪声传播速度很快,给人们的身体健康和心理健康造成的影响会比较大,建筑工程施工现场的噪声污染主要来源于一些大型机械设备和设施在作业时候发出的声音,由于建筑施工现场作业工具一般都是大型的机械设备和设施,所以噪声污染是必不可免的,尤其是传统的建筑工程施工现场的大型机械设备和设施的噪声污染,本文主要讲述了建筑工程施工的噪音污染的现状;建筑工程施工的噪音对人体健康产生不良的影响;建筑工程施工的噪声控制的管理对策与建议.     

选煤厂采用Δ-Y_0-11/Y-Y_0-12低压系统的集中控制二次线设计

选煤厂低压配电系统通常采用变压器Ｙ -Ｙ0-1 2中性点直接接地系统。为提高电网质量 ,Δ -Ｙ0 -1 1变压器在选煤厂逐步使用。对于同一个选煤厂使用不同接线组别的低压系统 ,特别是选煤厂分期建设或老厂改扩建 ,存在着集中控制系统的二次线设计问题。Ｙ -Ｙ0 -1 2和Δ -Ｙ0 -1 1变压器在 6ｋＶ侧相序相同时低压侧存在 3 0°相位差 ,如图 1所示。假定Ｙ -Ｙ0 -1 2变压器为 1Ｂ、Δ -Ｙ0 -1 1变压器为 2Ｂ ,1Ｂ的二次侧电压为ＵＡ、ＵＢ、ＵＣ,2Ｂ的二次侧电压为ＵＡ′ ＵＢ′ ＵＣ′。ＵＡ 和ＵＡ′之间的电位差ＵＡＡ′=4 2 5Ｖ(ＵＡ=2 2 0Ｖ…     

基于控制输入长短期记忆网络的关系抽取方法——

目前基于传统深度学习的关系抽取方法在复杂语境下抽取较为困难, 且未考虑语境中非目标关系对关系抽取所带来的影响. 针对这一问题, 本文提出了控制输入长短期记忆网络CI-LSTM (control input long short-term memory), 该网络在传统LSTM的基础上增加了由注意力机制和控制门阀单元组成的输入控制单元, 控制门阀单元可依据控制向量进行关键位置上的重点学习, 注意力机制对单个LSTM的输入的不同特征进行计算. 本文通过实验最终选择使用句法依存关系生成控制向量并构建关系抽取模型, 同时使用SemEval-2010 Task8关系数据集以及该数据集中具有复杂语境的样本对所提方法进行实验. 结果表明, 相比于传统的关系抽取方法, 本文所提CI-LSTM在准确率上有进一步提升, 并在复杂语境中具有更好的表现.     

Topography Image Segmentation Based on Improved Chan-Vese Model简

Aiming to solve the inefficient segmentation in traditional C-V model for complex topography image and time-consuming process caused by the level set function solving with partial differential, an improved Chan-Vese model is presented in this paper. With the good per）brmances of maintaining topological properties of the traditional level set method and avoiding the numerical so- lution of partial differential, the same segmentation results could be easily obtained. Thus, a stable foundation tbr rapid segmenta- tion-based on image reconstruction identification is established.     

A review of: “Human Motor Actions: Bernstein Reassessed.” Edited by H. T. A. WHITING. (Oxford: North-Holland, 1984.) [Pp. xxxv + 633.] ISBN 0-444-86813-5.

The physical work performance of eight fit fire fighters wearing fire brigade uniforms and wearing breathing apparatus was assessed. They were tested in a climatic chamber set at temperatures of 15 and 45°C respectively. The test was performed with and without fire fighting equipment. The subjects walked on a treadmill at a speed of 3.5km/h, which produce a workload equivalent of 20% of the subjects' maximal oxygen uptake without equipment, and 30% with equipment. The test lasted for 60 min. Heart rate, oxygen uptake, skin and deep body temperatures were measured during the test. The subjects estimated perceived physical exertion and perceived temperature. Wearing fire fighting equipment increased the oxygen uptake by 0.4 1min^-1. Heart rate at the end of the experiments reached near-maximum levels when the temperature was 45°C with equipment, and deep body temperature increased to an average of 38.7°C. The subjects' ratings of perceived exertion were highly correlated to heart rate. The loading induced by heat and protective equipment reduced the ability to perform strenuous work. The combination of thick clothing and heavy breathing apparatus was found to have a significant limiting effect on the endurance of fire fighters.