Fuzzy-model-based tracking control of Markov jump nonlinear systems with incomplete mode information

This paper considers the tracking control problem for nonlinear Markov jump systems based on T–S fuzzy model approach with incomplete mode information. It is assumed that the mode transition rate matrix is not a priori knowledge and only partial information is available. Moreover, the mode where the system stays when operating is not fully accessible to the designed controller. In this incomplete mode information scenario, a hidden Markov model based mechanism is modified to simulate the mode deficiency mapping. The incomplete transition rate matrix is well defined in the form of a polynomial. Based on this, by constructing a polynomially parameter-dependent Lyapunov matrices and linear matrix techniques, sufficient conditions are established to ensure the stochastic stability and a prescribed tracking performance. The controller design scheme are presented by solving a series of LMIs. Examples are given in the end to illustrate the effectiveness of our proposed results.     

Recent dielectric constant theory and its relation to problems of electrical insulation

There has been indicated the importance of a knowledge of the chemical and capillary structures of insulating materials if electrical energy losses in them are to be explained.It has been demonstrated that there are available, first, methods by which the structures of their simpler molecules may be determined, second, methods by which the sizes and shapes of their aggregates may be approximated, and third, methods by which it may be expected that something may be learned concerning the size, form and arrangement of their capillaries. In certain cases these methods have been given in some detail, while in others they have only been mentioned. Their nature and the importance of their solution make them deserving of every attention the chemist and physicist can devote to them.     

A new set of orthogonal functions and its application to the analysis of dynamic systems

The present work proposes a complementary pair of orthogonal triangular function (TF) sets derived from the well-known block pulse function (BPF) set. The operational matrices for integration in TF domain have been computed and their relation with the BPF domain integral operational matrix is shown. It has been established with illustration that the TF domain technique is more accurate than the BPF domain technique as far as integration is concerned, and it provides with a piecewise linear solution.As a further study, the newly proposed sets have been applied to the analysis of dynamic systems to prove the fact that it introduces less mean integral squared error (MISE) than the staircase solution obtained from BPF domain analysis, without any extra computational burden. Finally, a detailed study of the representational error has been made to estimate the upper bound of the MISE for the TF approximation of a function f(t) of Lebesgue measure.     

系统论在企业运作动态衔接管理中的运用

企业运作的动态衔接管理是一个复杂的管理过程。本文首先阐述了企业运作动态衔接管理对企业竞争优势的影响,然后运用系统理论分析了动态衔接管理的障碍,并提出了系统论在衔接管理中的运用原则。     

Information,knowledge and wisdom: groundwork for the normative evaluation of digital information and its relation to the good life

This paper provides a general philosophical groundwork for the theoretical and applied normative evaluation of information generally and digital information specifically in relation to the good life. The overall aim of the paper is to address the question of how Information Ethics and computer ethics more generally can be expanded to include more centrally the issue of how and to what extent information relates and contributes to the quality of life or the good life, for individuals and for society. To answer that question, the paper explores and provides by way of a theoretical groundwork for further research, the concept of wisdom understood as a type of meta-knowledge as well as a type of meta-virtue, which can enable one to both know in principle what a good life is and how to successfully apply that knowledge in living such a life in practice. This answer will be based on the main argument presented in this paper that the notion of wisdom understood as being at once a meta-epistemological, meta-axiological and meta-eudemonic concept, provides the essential conceptual link between information on the one hand and the good life on the other. If, as we are told, this is the Age of Information, both the theoretical examination and analysis of the question of how information relates to the good life and the provision of an adequate answer to that question are essential for developing a deeper understanding of how to evaluate the theoretical and practical implications and ramifications of information for the good life, for individuals and societies generally.     

A study of information systems planning and its effectiveness in Taiwan

The main objectives of this research were to compare and contrast the findings of the relationships among different stages of information systems (IS) strategic planning, system planning, plan implementation, and IS effectiveness across various organizations in Taiwan. The intent was to take a broad look at the key concerns of IS planning across cultures. The relationships among three phases of planning (strategic planning, systems planning, and plan implementation), and their relationships with user satisfaction were examined. Five hypotheses are used to examine the relationships. The correlation analysis results support the following hypotheses: (1) the extent of IS systems planning is positively associated with the extent of IS strategic planning; (2) the extent of plan implementation is positively associated with the extent of IS systems planning; and (3) the extent of IS strategic planning is positively associated with the extent of user satisfaction. IS systems planning has no effect on user satisfaction. IS plan implementation has no relationship with user satisfaction.     

A decision-theoretic approach to the evaluation of information retrieval systems

Evaluation research on information retrieval (IR) systems has thus far been narrowly focused and disjointed. This research attempts to narrow the gap by providing a comprehensive and integrated multiple criteria decision-theoretic approach for the evaluation of IR systems. The approach, which is based on the Analytic Hierarchy Process (AHP), is illustrated in the context of a domain-specific IR system. The novelty of this approach lies in the focus on the user aspect and the application of decision-making theories in the IR field.     

An information processing constraints approach to the conjunction of macroeconomic and macropolitical theory

Human information processing is a fundamental and critically important resource for political life. It is moreover a constrained resource. Using this fact connections can be established between ideas employed in political science and concepts in macroeconomic theory. A concept of “interest rates” can be derived from information processing constraints. These “interest rates” are analogous to the “arousal level” construct of motivational psychology, suggesting avenues for social research. A generalized Kynesian “general equilibrium” model, derived largely from macropolitical considerations, is presented.     

An application of the Udwadia-Kalaba dynamic formulation to flexible multibody systems

For the transient response analysis of a flexible slider-crank mechanism, the coordinate partitioning scheme and the Udwadia-Kalaba formulation are herein compared. The flexibility of the coupler has been modelled by means of a single Timoshenko beam element. The present analytical treatment can be viewed as an extension of the model discussed by Shabana in his textbook.     

长三角信息服务业集群网络特征及其动态发展

挖掘2000-2011年长三角地区信息服务业的专利数据,基于隶属网络关系分别构建了上海、南京、杭州、苏州这四个城市的集群网络和整个长三角地区的集群网络,并从个体网和整体网两方面对集群网络的动态发展特点进行分析,以期了解网络的动态演化特征。研究表明:1)集群网络中的企业或科研机构获取资源的平均能力不断增强,集群网络表现出规模持续增大、连通性不断增强的趋势,到了成长阶段连通性趋近100%。2)长三角地区集群网络中,城市内的关系增长要快于城市间的关系增长,形成了以上海为领跑者,南京、杭州、苏州为追随者的格局。3)每个城市的集群网络以及整个长三角地区的集群网络都有着小世界网络的特征,信息传播效率很高。     

Controller synthesis for Markovian jump systems with incomplete knowledge of transition probabilities and actuator saturation

This paper is concerned with Markovian jump systems subject to incomplete knowledge of transition probabilities and actuator saturation. The system under consideration is more general, which covers the systems with completely known and completely unknown transition probabilities. By introducing some free-connection weighting matrices to handle the inaccessible elements of transition probabilities, a new criterion is established to guarantee the stochastic stability of the closed-loop system. An optimization problem with LMI constraints is then formulated to determine the largest contractively invariant set in mean square sense. Finally, two numerical examples are provided to illustrate the merits of our method.     

动态能力的概念和理论有价值吗?

以Winter对动态能力的本质性界定为理论基础,结合Prahalad和Hamel关于“核心能力”的理论和解释,同时把Priem和Butler对Barney思想是“同义反复”的质疑,作为理解动态能力概念的“警示”来分析动态动力概念的价值问题。     

Pole placement LMI constraints for stability and transient performance of LPV systems with incomplete state measurement

In this paper, new conditions for the stabilisation and transient performance improvement of linear parameter-varying (LPV) systems considering the gain-scheduling (GS) strategy are proposed. Our work is focused on dealing with LPV systems under the major practical constraint of incomplete state measurement. In that sense, we propose two new control design strategies based on linear matrix inequalities (LMI). First, for coping with the general case where only a subset of the state variables is measured, we propose a new static output feedback (SOF) strategy. Second, for dealing with the particular case where only accelerometers signals are available, we bring new synthesis conditions for the design of state derivative feedback (SDF) controllers. Further from stability, our proposed methods are able to induce better transient response by including pole placement LMI constraints in the control design. For illustrating our contribution efficacy, we present a couple of design examples.     

浅论会计信息失真及其对策

会计信息在整个经济活动中起着非常重要的作用。但当前会计信息失真已成为会计工作中亟待解决的问题，本文就会计信息失真的原因、形式及解决会计信息失真的对策进行讨论。