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This paper applies Multidimensional scaling techniques and Fourier Transform for visualizing possible time-varying correlations between twenty five stock market values. The method is useful for observing stable or emerging clusters of stock markets with similar behavior. The graphs may also guide the construction of multivariate econometric models.
Variety of Web Service discovery algorithms had been investigated for improvement of the retrieval quality. Combining the several algorithms according to their strong points, is proposed as enabling more refined discovery consequence. Now, many researches as OWL-Mx are sited as examples, had already shown the method that join together and conclude for the specific domain. However, there are no way...
To solve the problem of recognize the causation factor characteristics of emergency in supply chain in different industries, the paper established causation factor index system of emergency in supply chain based on system analytical method, and at the same time, put forward a causation factor characteristics recognition model for emergency in supply chain based on principal component analysis and...
A robust distributed estimation scheme for fusion center in the presence of sensor faults via collaborative sensor fault detection (CSFD) was proposed in our previous research [9]. The scheme can identify the faulty nodes efficiently and improve the accuracy of the estimates significantly. It achieves very good performance at the expense of such extensive computations as logarithm and division in...
In this paper, we investigate the algorithmic complexity of deciding colorability, as a function of the number of available colors. Intuitively, one may assume that the problem's complexity is highest around the chromatic number of the graph. We give substantial empirical evidence that this intuition is largely true, both for exact and heuristic graph coloring algorithms. We give a rigorous proof...
In this paper, a low cost anti-aliasing rendering scheme for 2D graphics is proposed. This scheme first adopts the local minimum table (LMT) approach to store the edge information. Next, a scan-line buffer is used with LMT to generate the sorted active edge table. Based on the proposed coding scheme for scan-line buffer, the size of buffer can be reduced by 78%. Finally, a FLIPQUAD multisampling pattern...
Radio frequency identification (RFID) tag has been extensively used in diverse applications, recently. For instance, we may use it to track freights on a warehouse, to catch a thief for lost luggage and to rapidly locate lost children or passengers who fail to arrive on time at the departure gates of major airport. It can also be employed for transmitting multimedia content (especially for video)...
Lots of risks existed in the process of Emergency Logistics especially when natural disasters happened. Evaluation research on Emergency Logistics Risks (ELR) is the basis of effective early warning and responding to risks, so it's of great theoretical and practical significance to establish an early warning index system for ELR. Firstly, some foundation research about ELR was carried out, including...
Index structure system of urban rail transit is analyzed and optimized by applying information entropy. In this paper, a security evaluating C2R model on analyzing urban rail transit is set up based on DEA. Finally, a case study about Guangzhou Metro Line 1 is carried out, and annual relative validity of subway operation safety is evaluated by using the Matlab software program. According to the results...
On how to use natural gas in a highly efficient and rational way in heating, this dissertation proposed a dual-source heating system with gas internal-combustion engine as thermal power equipment and set up a mathematics model of economic evaluation criterion for this system. Applying to concrete cases, the authors analyze the environment temperature t, the COP (coefficient of performance) of heat...
This paper provides an assessment method for solar home system (SHS). The authors devised two formulas to perform the assessment. One is called total assessment score (TAS) which evaluates system quality. The other is called performance / price index (PPI) which gives an overall assessment to systems considering the quality, price and lifetime of SHS. The assessment method allows the assessment to...
The paper studies the application of principal component analysis and ANN (Artificial Neural Networks) for pre-warning of enterprise financial crisis, analyzes the factors of financial crisis, and constructs the model of the enterprise financial crisis with principal component analysis and ANN. It integrates simplifying of enterprise financial crisis index, dynamic learning of financial crisis knowledge...
By using a laser profiler, the surface height variation trace of three types of tillage soil profiles, that is ploughed, harrowed and rolled surface are obtained. For these profiles, the root mean square height (RMS) and the fractal characteristics were discussed. The result show that fractal dimension turned out to be a suitable index for the level of soil surface roughness. But there is no one-to-one...
For features of planning and design's evaluation, and on basis of the principles of establishing evaluation index system, this paper established the comprehensive evaluation index system of residential planning and design program; In the use of analytical hierarchy process to determine weights of evaluation indexes, and based on the character of fuzzy comprehensive evaluation method that using dimensionless...
The interrelations among environmental performance, environmental disclosure and corporate value, are basic issues of firm environmental behavior. There are different arguments in prior literatures. Based on the investigation of 145 listed chemical firms in China, we obtain results (1) environmental disclosures level is significantly associated with environmental performance; (2) environmental disclosures...
Using the plastic-plate of rice seedling, we studied that phosphogypsum as acidifier in affected on the growth of rice seedling. It was shown that phosphogypsum could adjust soil pH value of into the pH range of rice seedling growing, which had increased effectively plant height, root length, dry weight, chlorophyll content and root activity of rice seedling. Phosphogypsum treatment mixed sulfuric...
The traditional Chinese medicine industry is a field that has unique advantage and national characteristics in the industrial field of our country. The evaluation of the enterprise core competence plays an important role in the rapid development of the traditional Chinese medicine industry. In this paper, a comprehensive evaluation model of the Chinese medicine enterprise core competence is proposed...
The land is foundation of human survival and development, land sustainable use is related to human survival and development. Taking Daqing City as an example, the paper constructs evaluating indicator system basing on the characteristics of Daqing's land. Combining the entropy theory and the matter-element to construct the evaluate model, the paper evaluates the land sustainable use degree with macroscopic...
Water resources sustainable use evaluation plays an important role in water resources planning and management, and it is a typical multi-goals, multi-layers and multi-attributes decision-making process, it needs to consider comprehensively social, economic, resources and environmental factors. A new evaluation index system of water resources sustainable utilization has been set up based on Yunnan...
For the status that the domestic commercial enterprises' performance appraisal lacks objective quantitative criteria, it established index system of commercial enterprises' performance appraisal in this paper. It used the rough set to make attribute reduction, and distilled the core influencing factors. Then using information entropy to confirm objective index weight, and employing the unascertained...
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