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.
At present, the lack of actual operation experience of the intelligent substation secondary system results in indeterminate maintenance strategy, time-consuming and laborious routing inspection, blindness in maintenance work and some other issues. Based on this, a comprehensive evaluation system of the operation quality of the secondary system is realized firstly. Secondly, the utility function is...
This paper presents a practical evaluation method for the operation quality of smart substation secondary equipment. The evaluation method includes evaluation index system, evaluation model and evaluation process. Taking full account of the main factors which affect the operation quality of smart substation secondary equipment, the veto index is proposed and a relatively complete evaluation index...
Interval fuzzy preference relations (IFPRs) that can simply denote the lower and upper bounds of decision makers’ uncertain judgments are keenly studied by researchers and are widely used in practical decision-making problems. Consistency analysis is vitally important to avoid illogical ranking orders. First, this paper analyzes issues in previous additive consistency concepts for IFPRs. Then, it...
Cloud computing has emerged as a compelling vision for managing data and delivering query answering capability over the internet. This new way of computing also poses a real risk of disclosing confidential information to the cloud. Searchable encryption addresses this issue by allowing the cloud to compute the answer to a query based on the cipher texts of data and queries. Thanks to its inner product...
This paper presents a novel scheme to adaptively determine the embedding strength for audio watermarking using quantization index modulation (QIM) in discrete wavelet packet transform (DWPT) domain. While the DWPT facilitates the signal analysis, the employment of a psychoacoustic model helps to not only acquire appropriate quantization steps for watermark embedding but also retrieve these steps back...
Social learning is showing one of the immersive potentialities for human knowledge gathering on the Internet throughout the last decade. Due to rapid growth of Internet, people can communicate with each other using IM (Instant Messaging), WWW and P2P. IM Services, such as, Yahoo, Twitter, Google Talk, ICQ (I seek you), etc. which provides individual and group communications. Web search engines (Google,...
On the base of the assumption that the recycled quantity of used products is affected by the interaction of recycling price and sales volume, this paper researches closed-loop supply chain's pricing and coordination, gives system members' optimal pricing and profits in decentralized decision and centralized decision and finds that reverse supply chain itself is in coordination and traditional forward...
Commercial banks provide financial services to enterprises, especially to small and medium enterprises (SME) in supply chain, to decrease transaction costs, to simplify the process of property shift, to create liquidity and to make settlements. Thus, the banks need scientific methods to choose proper SME to corporate with. This article creates a comprehensive evaluation index system from five aspects:...
In order to actually reflect the situation of trunk road service, the paper puts forward the definition and connotation of trunk road service oriented by user demand on the basis of Maslow's needing theory, selects 16 indexes from three aspects of service condition, service environment and service activity on the base of expert experience and related specifications, and sets up evaluating index system...
According to the basic theory of the service quality and the characteristics of highway traffic construction, this paper pointed out the conception of trunk highway service quality. Based on the theory of user satisfaction degree, the attributes were selected aim to establish comprehensive evaluation system of trunk highway service quality. At last, an example was analyzed to verify the reasonableness...
What-if analysis is important for decision-maker to evaluate adopting new strategy and help knowledge discovery. It mostly occurs in OLAP environments, based on implementation OLAP is divided into MOLAP and ROLAP. Most research focus on ROLAP but in the industrial sector MOLAP is more common. There is relatively little work talking about what-if analysis in MOLAP environments. The challenge of what-if...
This paper designs an Hinfin estimator for discrete time piecewise affine systems in the presence of external disturbance. The issue considered is that the transitions of actual system state and its estimate may not be synchronized due to output noise and estimation errors. The piecewise quadratic Lyapunov function technique is adopted, and the region information is taken into account to reduce design...
Reverse skyline queries have been proved very useful in business location, environmental monitoring and some other applications. In this paper, we consider reverse skyline queries processing on data stream, which provides continuous, high-speed data elements. Specifically, we consider the latest objects in the sliding window. The challenge is that it is difficult to maintain a multidimensional index...
Wireless mesh networks have promised to provide high-speed access for residential or mobile customers. And concurrent transmission is an effective way to enhance system throughput in wireless mesh networks. The objective of this paper is to provide an effective concurrent transmission method to enlarge throughput with specific QoS fairness guarantee in wireless mesh networks. Firstly, link relationship...
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.