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In this paper, robust stabilization problems for a class of large-scale systems with missing measurements are considered. It is assumed that the occurrence of missing measurements satisfies a Bernoulli random binary switching sequence with an unknown conditional probability distribution. A state feedback controller can be designed to make the closed-loop large-scale systems exponentially mean-square...
Based on the theory and technology of artificial intelligence, internet, and cognitive psychology, word problem auto-solving and intelligent tutoring technologies have become hot issues of research in recent years. However, since word problem is described by natural language, the number of resolved problems is limited. The paper researches the algorithm of processing You-sentence and develops an auto-solving...
Medical supply chain is an extremely complicated process. On basis of the perishable inventory theory, the paper mainly focuses on the optimal ordering policy of multi-pharmaceutical for the large public hospitals. The paper develops a mathematical model with constraints on space where the shortage are allowed and has a lead-time, in order to maximum the total profit of the inventory system. Then,...
In this paper, we deal with special generalization of metric spaces by considering the distances between objects as gradual numbers. Firstly, the concept of gradual metric spaces is introduced. The new concept is a generalization of classical metric spaces and gradual linear normed spaces in the sense of Sadeqi and Azart. And then, basic concepts with respect to topology in gradual metric spaces are...
This paper takes the governance practice of UK government websites as research object and analyzes the background of its generation and development. And four main aspects of measures are emphatically analyzed: user-centered service strategy, focus of content and service, support of standards and specifications, and service quality control. On this basis, the significance and value of UK government...
Along with the progress of science and technology, the sensor technology rapidly develop, miniature sensors appeared and were used in the world. Wireless sensor network is composed of sensors and base stations as network nodes, which in a variety of areas has very broad application prospects. The definition and calculation of sensor network life has caused great concern in the academic community....
Components of power systems are essentially a special class of nonlinear differential-algebraic equations subsystems, whose index is one and interconnection is local measurable. In this paper, the invertibility of power systems components is discussed. Firstly, the definition of invertibility is presented. Secondly, a recursive algorithm is proposed to judge whether the controlled components are invertable...
Computer-assisted instruction systems have been broadly applied to help students solving arithmetic word problems. However, these systems offer little help to students encountering arithmetic word problems that do not be stored in the predesigned database. To solve arithmetic word problems which are not stored in the database, comprehending word problems is necessary. A method based on semantic sentence...
House dust mites not only live in house dusts but also affect human bodies. Among the many species, D. farinae, D. pteronyssinus, Euroglyphus maynei have been found commonly associated with Ig-E mediated allergic diseases. As a result, there is increasing effort to develop methods for diagnosis and treatment for diseases caused by these species. The present study was to explore the evolutionary relationships...
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