The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A new synthesis approach for sparse planar array element positions featuring a minimum sidelobe level is presented. The approach is based on the Modified real Genetic Algorithm (MGA), it can search a smaller space of solution to find an optimal solution, and the freedom of the elements can be used more effectively than the existing methods. Finally, the numerical simulations are presented to assess...
The aim of this paper is to study the impact of the public patenting-promoting policies on patent output at provincial level. Time-series cross-section data from 31 provinces of mainland China between 1999 and 2012 are used to perform panel analyses. Following two national public policies released around 2006, regional utility patent output have been striding forward in the quantity (utility patent...
In this paper, we regard the power quality evaluation method as research content. We construct the identity understanding matrix and difference understanding matrix by using the judgment matrix of analytic hierarchy process and the connection degree model of set pair analysis. Then calculate the weight of power quality indexes by utilizing the compatibility matrix method and entropy weight method...
With the development of research on the complex networks, dynamic evolution of network structure has become a hot issue for the current study. In this paper, we completed the dynamic evolution analysis of network structure through three steps. First of all, by the social network analytic method, the paper described the dynamic change of real network model's three basic properties, namely, degree distribution,...
According to the National Standard of the People's Republic of China <Agricultural Safety and Quality of Agricultural Products — Pollution-free Vegetable Production Environment Requirements> (GB/T18407.1-2001), environmental quality assessment of heavy metal in soil of pollution-free vegetable produced in Hebei Plain Area was carried out. The results by the single-index model indicated that...
This paper mainly presents the general model and solution of multi-objective linear programming problem under fuzzy constraint and An illustrative example is provided to demonstrate the approach. Also multi-objective fuzzy linear programming problem which contains the solution to the objective function with fuzziness or both the objective function and the constraint condition with fuzziness in multi-objective...
It is known that software system plays an important role in the information society, and high trustworthiness is a key requirement for many types of systems, such as safety critical systems, telecommunication systems, and mission critical software systems. How to improve the trustworthiness to better serve our society has become an important research focus among areas of software theory and technology...
As is known to all, software system plays an important role in the information society, and high credibility is a key requirement for many types of systems, such as safety critical systems, telecommunication systems, and mission critical software systems. How to evaluate the software credibility has become an important research focus among areas of software theory and technology application. Considering...
At present, the government's policy on discharging pollutants of power plant is a nationally unified pollution charge standard. Considering the shortcomings of existing Pollution Charge System (PCS), an environmental value model of pollutant based on the cost of prevention is proposed in this paper; Besides, an Environmental Impact Assessment (EIA) model of generation dispatch is presented in this...
The manufacturing quality of an aircraft structure greatly relies on the experienced technician with consistent riveting process. Generally, the cost for training an experienced technician is very high. However, manufacturing defects are still unavoidable due to the human errors. In this paper, a quality inspection system for riveting process by using neural network (NN) was developed. This inspection...
How to choose a trustworthy e - commerce website is the key for the consumers, which would affect the development of e - commerce industry. Because of the limitations of the consumers ability, seeking for the proper evaluation of the credibility for the e - commerce website has become a responsibility of the neutral third party. The paper establishes a high credible model to evaluate the credit degree...
With international practice and needs of business own development, it' s has become more and more common to carry out EPC project general contract in enterprises' contract. The EPC model covers basically the entire project construction process and comparing with the traditional contract model, the risk of general contactor is the biggest undoubtedly. To the ambiguity and uncertainty of risk assessment...
This paper tries to study the influences of international oil price to Chinese and American stock markets. We first eliminate the impacts of the calendar effect and the time trends on oil futures returns and stock market returns using Gallant, Rossi and Tachen's method combining with stepwise regression method, and then do quantile regression analysis according to the adjusted data. The empirical...
In this work, a 2-D subaperture polar format algorithm (PFA) based on stepped-chirp signal is proposed. Instead of traditional pulse synthesis preprocessing, the presented method integrates the pulse synthesis process into the range subaperture processing. Meanwhile, due to the multi-resolution property of subaperture processing, this algorithm is able to compensate the space-variant phase error caused...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.