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Fateful stampede accident has become one of hot spots in public security field because of its sudden and serious consequence. Actual cases show that crowding is not a sufficient condition for fateful stampede accident, but a necessary condition. Some emergencies play a role of trigger in stampede accident, such as fire, explosion, individual injury, earthquake, etc. Evolution mechanism of fateful...
A model which meets the law of grey exponent has been constructed for sequences based on the analysis of modeling mechanism in grey systems theory. And data in these sequences also meet the law of grey exponent. After the model is constructed, we make some simulations and present a numerical example. The result indicates that the prediction accuracy from this new model is much higher than that from...
This paper presents a commercial aircraft price forecast method based on the construction of I-GM(0,N) model. As a modification of conventional GM(0,N), the I-GM(0,N) model is established mainly for Cross sectional data simulation and forecast. After selecting price-affecting factors as well as selecting the Benchmark Ranking Sequence based on Grey Relational Analysis(GRA), the listing prices of some...
Based on the present theories of buffer operators, We propose in this paper several kinds of buffer operators based on the interpolatory function,which all have the universality and practicability. we prove them to be weakening buffer operators. The problem of some contradictions between qualitative analysis and quantiative forecast in pretreatment for vibration data sequences is resolved effectively.
Based on Wuxi city's data of R&D outlay, S&T personnel and GDP, this paper analyze the incidence of the S&T investment and economic growth used the relative degree incidences. The conclusion is that R&D Expenditure and S&T personnel investment both have a positive correlativity with economic growth, and R&D Expenditure investment is more important than others. This indicates...
Aimed to quality character management under "Main Manufacturer-Supplies" model, the structural equation model and programming model are set up to evaluate and optimize the supply chain components' quality characteristics. This paper can be divided into 4 parts: (1)Quality loss function: Design the quality loss functions according to 3 quality types as input of the model; (2)Structural equation...
From the perspective of efficient market, the existence of anomalies in securities business indicates the lack of market efficiency in China. This paper puts forward a forming model of anomalies in securities market under rational human being hypothesis. It employs some models to analyze the formation mechanism of securities business of overreaction and under reaction with simulation method and theoretical...
Sci-tech innovative talents have been most important sources for Jiangsu province, and prominent achievements of Sci-Tech jog have been made. In this paper, the definition of Sci-tech innovative talents is explored first, and the gap between demand and supply of Jiangsu Sci-tech innovative talents is predicted based on GM (1, 1). Lastly, some policy suggestions are proposed.
Based on study on references concerned, the critical factors affecting real estate prices in Shanghai are determined in this paper according to Grey incidence as well as Grey clustering principle. Afterwards, the regression model on real estate prices in Shanghai and other related variables is established with data collected from 1994 to 2008 and the real estate prices between 2009 and 2013 have been...
Based on the present theories of buffer operators, this paper proposes a kind of buffer operator, which all has the universality and practicability. We address the characteristics and the internal relations between these buffer operators. All of these effectively resolve the questions, which often come forth in modeling forecasting of disturbed data sequence by shock wave and there are some contradictions...
Using the method of bibliometrics, a 1982~2006 grey systems database was constructed for China from National Knowledge Infrastructure (CNKI). Gather documents with grey system contained in their titles, by analyzing the year, institution, journal, high citation frequency, theme, subject, output manner etc. Quantitative characteristics of distribution, structure change, research topic, research hotspots...
Supervision management of research funds is critical for the management of colleges and universities. The effects of supervision and implementation will directly influence the research level of these schools as well as the benefits for the national scientific research. By establishing a game model of supervision, this paper centers on the analysis of the relationship between national fund-authorized...
In this paper, detailed study has been made on the given clustering results. It defines whitenization weight functions and establishes grey measure of clustering for evaluating 2-tuple linguistic information. Such method is more effective in giving decision-makers more reliable information when they make correct decisions.
Being different from the typical direct modeling method and optimizing methods of background value, we use trapezoid formula and central difference quotient methods to whiten grey derivative and propose a grey modeling method for non-equidistant sequence based on the criteria of the minimum square error sum. The results show that the new model's fitting precision and prediction precision is improved.
To surmount the difficulty in solving the problem of linear programming with grey parameters (LPGP), a series of new conceptions such as the positioned linear programming, the ideal model, the critical model, and some other new ideas are put forward. The problem of how the optimum solution is affected by the variation of positioned coefficients and the range of the variation of the optimum positioned...
The important role of scientific and technical input for enhance initiative innovation ability and strengthen competitive capacity is discussed. The changing trends and characteristics of scientific and technical input in developed countries are analyzed. The present situation of scientific and technical input in Jiangsu Province is analyzed by compared with other provinces and based on practical...
Grey cluster decision-making is an important part of grey system theory. And 2-tuple linguistic assessment resolves the calculation problems of the result of expert qualitative linguistic assessment. But both of them not mention how to calculate the weight of index. Based on the definitions of entropy, a method of getting weight is proposed, and considers the character of grey cluster decision-making...
The phenomenon of qualified scientists and technicians gathering have been studied based on self-organization theory for the first time. The self-organization mechanism in the course of qualified scientists and technicians gathering was analyzed in this paper. The tremendous positive effect cause of qualified scientists and technicians gathering was revealed through a systemic study on the effect...
Considering the uncertainty of information, the paper puts forward an improved grey dynamic programming model. After that, treating profit value as positive interval grey number, the paper researches on dynamic programming model, and we could get the optimal strategy after solution by means of defining standard interval grey number. Furthermore, as we can not make the judgment of standard interval...
Grey relational analysis is an important part of the grey systems theory, and it is the basis of the grey clustering analysis, grey decision-making and grey controlling. In this paper, we provided the definitions of parallel, uniform and order-keeping properties. We constructed a new grey relational model. By theoretical proving we knew that the model is not only satisfied to the normality, whole...
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