Applied Mechanics and Materials Vols. 644-650

Abstract: The evolution of watershed geomorphology is a natural historical process, which evolves gradually from a low grade balance system to an advanced balance system. In order to preventing and reducing geological hazards in Lamaxigou watershed, this paper introduce present situation of researches on watershed geomorphic evolution at home and abroad, combining with the background of geo-environmental conditions of Lamaxigou watershed. It analyzed the rainfall runoff factors, geological physiognomy factors (lithology, structure and physiognomy, etc.), conditions of the physiognomy (gradient, slope length, slope shape, gully vertical slope, drainage area, the gully density, modulus of soil erosion, vegetation, etc.). In order to finding out the controlling factors for fathering erosion evolvement of this watershed system for providing a scientific basis. Then, it thoroughly discussed the watershed erosion system, analyzing the watershed erosion evolution of different types and characteristics of the formation, and finally studying on the impact of the evolution of Lamaxigou watershed geomorphology on project by altitude integral method, information entropy method and erosion integral method. It can provide a scientific basis for engineering design, construction and operation.

Abstract: Altitudinal range is widely used as a proxy of habitat heterogeneity to explain broad-scale geographical patterns of species diversity. Though altitudinal range is a factors derived from altitudinal gradient, altitudinal range’s effects on species diversity on altitudinal gradient remain little known. Based on large scale information of plant species, climatic and geographical factors, we investigated the altitudinal patterns of plant species diversity in the East Himalaya regions, and the effects of altitudinal range on species diversity on altitudinal gradient. We constructed two coefficients, ARDMA (altitudinal range divided by median altitude) and SDDAR (species diversity divided by altitudinal range). We used Spearman’s rank correlation to examine the associations among all of factors. Our results showed that species diversity decreased as the increase of altitude, and significantly related to potential evaporation. No significant correlation was observed between altitudinal range and species diversity, whereas ARDMA significantly related to species diversity, suggesting that only when altitudinal gradient was controlled, were there significant correlations between altitudinal range and species diversity. SDDAR significantly and negatively related to median altitude. We concluded that energy availability significantly affected the altitudinal patterns of species diversity, and altitudinal gradient may shadow the effects of altitudinal range on species diversity.

Abstract: The climate change is an important part of global change which can change the present situation of regional and even global human and animal’s survival. This article is mainly discussing the impact of climate change of the Poyang Lake Basin on regional tourism. On the basis of finding the relevant data of the climate change impact on regional tourism at home and broad, it analyses the influences that the regional tourism destination and tourists and tourism places have, as well as puts forward corresponding countermeasures.

Abstract: “Adverse selection” has abundant meanings in economic, one of its meanings is the phenomenon that the average quality of trading products in market is declining as well as quality goods are expelled by inferior goods for information asymmetry of both parties and the declining prices.In recent years, a new place of virtual goods, Internet market, is rapidly expanding. It has incomparable advantages in the transmission, acquisition and communication of information than traditional media in internet market. It will bring high efficiency to commercial activities definitely. However, the adverse selection and moral hazard, especially the adverse selection, raised by information asymmetry, will have the consequence-the market for lemon. And it will affect the market efficiency further. As a new transaction means, electronic commerce should solve kinds of problems by information asymmetry. In this way, it may help in promoting and facilitating of economic development.

Abstract: Distance education is the perfect combination of information technology and educational technology, which provides a brand new educational mode for learning society. The prompt implementation of distance physical education is the only road to achieve the life-long education of sports. According to the characteristics of sports discipline, this paper proposes the mode of distance education based on network environment and discusses the strategies of network physical education.

Abstract: Although many dairy enterprises have established quality traceability systems, there is no indicators system and methods for evaluation on the capability of traceability system. The paper targets logistics quality traceability system of dairy products, establishes evaluation index system of traceability system, and evaluates the capability of logistics quality traceability system based on FAHP. Finally, we carry on the instance analysis of one dairy enterprise to evaluation its logistics quality traceability system.

Abstract: This paper first analyzes the problems of traceable information sharing between dairy suppliers and manufacturers, and proposes the theoretical and practical significance of building related evaluation system of information sharing. And then the traceable information in dairy supply chain based on batch management is analyzed and a principal-agent model is developed to assess the value of information sharing between dairy suppliers and manufacturers. Results show that when the information sharing between dairy suppliers and manufacturers reaches a certain degree, the Pareto optimality of the overall supply chain can be achieved.

Abstract: With the rapid development of the e-commerce, dairy enterprises have constructed the Internet direct marketing channel to expand the market and improve competiveness. Based on the dairy dual-channel supply chain as the research object, the paper firstly summarizes the characteristics and applicable scopes of the separated channel mode, hybrid channel mode, bricks and clicks mode, integration channel mode. Then, analyze the channel conflict types and the major factors. Finally, the paper discussed the price strategy, product strategy and channel strategy to coordinate the conflict.

Abstract: Through improving the Logistic population model, this paper sets a linear relationship between the net growth rate of the population and time, gets a differential model for predicting the future population, and uses Markov chain for predicting the age structure of the population in China

Abstract: This paper proposes some monetary policies for the reputation system based on auctions in p2p networks. In the model, releasers controlled the money supply of the auction market. The money supply can just satisfy the needs of peers. Let auction market keep fair and incent peers to share. And those policies can be implemented without centralized authority or infrastructure.