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In this paper, we will present some recent developments of flat-lens designs for microwave imaging applications at the EMC Laboratory of Perm State. We will also describe a procedure for systematically synthesizing artificial dielectrics, e.g., MTMs, for flat lens designs that can achieve a sub-wavelength focal plane behavior. The design has the advantages of being wideband and low-loss, and it is...
Multimedia applications have being widely supported by cognitive radio networks in which high bandwidth can be provided by fully utilizing radio spectrum. However, the research communities lack a theoretical modeling and analysis for multimedia system performance over cognitive radio networks. In this paper, a novel Markov-Chain based model of centralized cognitive radio network (CCRN) consisting...
An incremental algorithm for model checking progress properties is proposed. It follows from the following insight: any SCC-closed region of a system's state graph can be represented by a sequence of inductive assertions. Each iteration of the algorithm selects a set of states, called a skeleton, that together satisfy all fairness conditions; it then applies safety model checkers to attempt to connect...
This paper constructs a partial equilibrium of housing flow market to investigate the impact of foreign investment upon housing prices. The theoretical model demonstrates that the inflow of foreign investment will result in the appreciation of house prices. The empirical results illustrate that the foreign investment has a trivial impact on the house prices. In addition, the paper finds that the household...
A fuzzy comprehensive evaluation method of user experience is proposed to the problem on user experience quality which is difficult to accurately evaluate on the E-commerce web using. Firstly, being accordance with usability testing theory and the analysis of the user experience elements on E-commerce web using process, a evaluation index architecture is structured with views including human-computer...
In order to evaluate the coordinated development of a system, a method named Synchronous Coordination Judgment (SCJ) is designed, which involves such five procedures as following. Firstly, a system is divided into several subsystems and a number of elements are chosen. Then, based on some criteria these elements are divided into three ranks. Secondly, in each subsystem the number of the elements in...
In order to evaluate the carbon emission of energy producing provinces, to which, the interrelationships between energy and economical developing are more complicated, indexes are selected to structure the three primary subsystems and eight selected primary producing provinces are compared and contrasted under the admixture method of TOPSIS and entropy weight. Not only the results of each subsystem...
There is some difficulty in evaluating the designs of bulldozer. Being a complex mechanical system, the bulldozer has many subsystems and factors, which are interrelated, constrained mutually and interacted with each other. And its information is always incomplete and uncertain. The present methods like AHP and fuzzy comprehensive evaluation can't solve this type of problem satisfactorily. And the...
The "metabolism of human society" is a concept used to characterize the processes of energy and material transformation in a society which are necessary for its continued existence. In order to improve the traditional input-output analysis method and the black-box analysis model, the societal metabolic ecosystem of china was divided into different components to establish societal metabolic...
Due to the different ecological characteristics of the cities, the current national standard can not normalize the eco-city construction in China. To solve this problem, this paper puts forward a new method to set up different index systems based on the classification of cities, i.e., represent the generality of the cities by a set of common indices for comparison; classify various cities by a set...
Choosing a cotton variety involves making comparisons over many trials and across an increasingly large number of available varieties. To aid in this process, a computerized tool has been developed at the Texas Tech University. This tool, called COTWIZ, based on the cotton variety selection model, allows multiple comparisons of varieties across a number of trial locations. COTWIZ based on the cotton...
Based on extension theory, performance index and matter-element model of comprehensive evaluation for embedded system were established by analyzing basic characteristic, composition principle and application category of embedded system. Through calculating its comprehensive correlation degree, multiple index evaluation was formulated as the simple target decision. It obtained performance comprehensive...
Qingdao is a representative coastal city, whose inshore water quality is in a deterioration tendency influenced by anthropogenic activities. Recent evolution of water quality was quantitatively analyzed by adopting fuzzy comprehensive evaluation method, and its predominant influence factors were determined by a multi-regression model. The results show that: (1)Qingdao inshore water quality worsened...
Classification of government information resources is an important prerequisite of carrying on information exchange and carrying out information resource-sharing. This paper expounds the categories principle and the method and some domestic and international typical classification of information resources at first, Then on this basis, according to the characteristic and link degree analyze the adaptability...
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