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.
Sales forecasting is an important aspect for sales management. It will be great if we can make sales forecasting as an intelligent service in an information system. Based on the grey system theory, we analyzed the disadvantages of grey prediction model GM(1; 1) in this article. Considering the actual characteristics of the prediction series, a model of adaptive prediction with small samples is established...
Engineering experience reminds us of the importance of uncertainty analysis in fatigue reliability based design. In the present paper, according to the procedure of fatigue reliability analysis, parameter uncertainty and model uncertainty are studied and the corresponding solutions are reviewed. The aim of parameter uncertainty analysis is to obtain reliability index to quantify uncertainties imported...
The development of the Internet and E-commerce makes the enterprises' competition beyond the time-space constraints. The rules of traditional market competition also have been changed. Soft power has become as important as hard power in the enterprises' development. A clear exposition of the relationship between soft power and hard power is very important for acquiring sustainable competitive advantage...
Through applying spatial statistical analysis, Geographical Weighted Regression (GWR) model and GIS technology, this study aims at finding the relationship between the effects of various factors and spatial distribution of residential house price. The traditional regression models are reviewed firstly, the model without the consideration of spatial characteristics cannot reach very nice precision...
This paper redefined the indicators of distribution system reliability analysis, combined the topology and reliability with a new comprehensive index as a reflection of the load point failure rate, and established the artificial neural network classifier. Simulation results show that the method helps to improve the efficiency of distribution network reliability analysis
With the development of nonlinear science, the existence of long memory in the financial market volatility has been found, which is inconsistent with the weak form of Efficient Market Hypothesis. With the brief introduction of Heterogeneous Market Hypothesis and Fractal Market Hypothesis, the long memory behavior of Shanghai Stock Index's returns volatility is tested, based on H/S analysis and GPH...
This paper aims at the present difficulties to regulate the frequency difference and voltage difference automatically when doing power grid parallel operation in substation, and applies the back-to-back voltage source converter to the power grid synchronization parallel based on the theory of active power frequency and reactive power voltage in power system. The core of the power grid synchronization...
A role based hierarchical group awareness model (RHGAM) on the basis of the previous research was presented in this paper. Regarding role as the basis of the group cooperation, firstly RHGAM constructed a group cooperation environment (GCE), and then GCE was extended by group awareness content, awareness hierarchy, the task decomposition rule. The model divided the awareness information into four...
Role is an important concept in collaboration systems and CSCW systems especially in the aspect of group awareness. This paper proposes a new group awareness model based on role by the research of role in collaboration systems and the analysis of existing awareness models. In the new proposed model, the task is decomposed into activities in order to acquire the activity graph. Then the roles are extracted...
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.