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.
Along with the economy development and the industrialization progress quickly, watershed pollution in cities is growing seriously. It's difficult to achieve the goal of improving the water environment with the traditional water pollution control theory, as it's more emphasis on the end approach. Evolution of watershed relates to climate change, geological features, land use, animal changes, human...
Is there any relationship between the historical volatility and the implied volatility in China's warrant market? Based the price data of 14 warrants in China's stock market, we found the answer is yes somewhat. It suggests that implied volatility can be taken as reference for the prediction of future fluctuation of stock prices. Despite the fact that implied volatility and historical volatility is...
By modifying Hotelling model, we research the differentiation decisions between open source software (OSS) and proprietary software (PS) and the location decisions of proprietary software when open source software and proprietary software coexist in a software market. In this paper, we assume proprietary software producer pursues profit maximization and open source software is freely available. The...
At first, based on the thought over properly and the modern market competition, the flexible development of Circular Economy has been advocated as a new model of economy development. This development model can solve the externality problems better which have not been solved under traditional model. Then, in this paper, the"3+3"model of the flexible development of Circular Economy has been...
Today, with the products becoming more and more complex, the multi-stage process are common in manufacturing industries. In multi-stage process, the final product variation is depended on variations of different stages and accumulation from previous stages. This paper focuses on developing a state space model to describe and analyze the variation transmission through the multi-stage machining process...
By analyzing the method of present generating test paper, the article represents a method of generating test paper based on genetic algorithm. A mathematical model for generating test paper is built. By putting forward the intercross operator and mutation operator in consistence with the independent coding, an automatic generation system for test paper is realized.
The specific transmission and diffusion of emergency in supply chain is determined by the characteristics of complexity, multitudiousness and diversification of stakeholders of supply chain. This paper analyzed the diffusion traits, patterns and influencing factors of emergency in supply chain. The incubation period, fast outbreak period and slow diffusion mechanism of emergency in supply chain are...
Experiment study on the influence of visibility on occupant evacuation in classroom is carried out. Different visibility conditions can be achieved by wearing different sunglasses or different daylight with curtains open or close. Occupant walking speed decreases with low visibility. And it is difficult to judge the evacuation routes and exit locations with low visibility. Especially when the visibility...
Demand forecast of emergency material is the precondition and foundation of planning emergency material storage strategy. Because of the emergency logistics have the characteristic as follows: sudden, uncertainty, non-conventional, the weak economy, complexity and so on, On the basis of defining the fuzzy condition and fuzzy transfer probability, the paper divides the emergency material demand into...
Since reform and opening up to the outside world, rapid industrialization and urbanization in China have played an important role in the increase of energy consumption. China became the second energy consumption country all over the world in 2008. As a big country in energy consumption, forecasting energy consumption is one of the most important tools for energy policy setting. Although there are...
Chinese medicine is a treasure of Chinese nation as well as a crystallization of Chinese working people's wisdom accumulated over thousands of years, Chinese medicine industry has always been a pivotal position in the pharmaceutical market in China. This paper uses the Gray correlation model based on the theory of information entropy, the method of entropy evaluation is to determine the weight. Using...
Aiming at research in mobile phone software supermarket, this paper introduced the definition and industrial chain of mobile phone software supermarket, as well as the comparison between mobile phone software supermarket, physical commodity supermarket and internet supermarket. More importantly, based on the analysis of consumer market and supply market, modeling in game theory was used to demonstrate...
Undesirable risk of hazardous materials transportation can be mitigated by a good routing. most scholars focus on the routing of hazardous materials transportation, but few papers concern with load-varied. The paper illustrates a routing model for the hazardous materials transportation under load-varied network. We use the Traditional Risk model for path risk assess, present a quadratic modeling methodology...
A strain of Citrobacter freundii with sulfate-reducing function was isolated from the sticky mud at the bottom of cooling tower in a power plant. Scanning electron microscopy (SEM) was applicated to observe the cell morphology in recycled water and the medium; the sizes of cells found in reclaimed water were slightly larger than in the medium. Growth curves showed that generation of the strain were...
In the increasingly fierce market competition, companies should focus on constantly nurturing and enhancing the capabilities of customer value creation. The paper uses the system theory to study the capability system of customer value creation. In order to further reveal the composition, nature and evolution of customer value creation capability, the paper build the production function model of customer...
The process kinetic model of flue gas desulfuration and denitrification simultaneously from flue gas by liquid catalyzed oxidation-microbiological method was studied in this article. The findings suggest that "Adsorption-biofilm" theory and the dynamic model established by the data from liquid catalyzed oxidation-biological method could accurate describe the process of purifying SO2 and...
In order to provide the references for making and adjustment of plan, plan environmental impact assessment (PEIA) should adopt a holistic and systematic concept to study the movement laws of society-economy-environment composite system. With the catastrophe assessment model, the movement laws of society-economy-environment composite system in plan area are studied. The feasibility of the catastrophe...
The relationship between entrepreneurial capability and enterprise growth is analyzed in the paper. Although the impact of learning capability and innovation capability of entrepreneur on the enterprise growth is emphasized in the existing researches, but this paper analyze the topic in the context of China, and the result shows that strategic capability, management capability and relationship capability...
Abstract-Graduate employment rate at colleges and universities react education requirement status of market, and it is also an important index which may weigh one university. At present, the statistics of graduate employment rate at colleges and universities is far from the true data in our country, thus it lose the meaning of employment rate counting. Setting up a set of rational, effective and feasible...
Chinese cities are now at a stage of rapid development and the problems of transportation, environment and land use are increasingly serious. Urban rapid rail transit is wholly a convenient, fast, effective, low-carbon, environment-friendly urban infrastructure system, which providing an effective way for the sustainable development of urban transit and land use. In this paper, the effect mechanism...
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.