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In a traffic jam or dense vehicle environment, vehicular ad hoc networks (VANETs) cannot meet the safety requirement due to serious packet collisions. The traditional cellular network solves packet collisions but suffers from long end-to-end delay. Third-Generation Partnership Project (3GPP) Long-Term Evolution (LTE) overcomes both drawbacks; thus, it may be used, instead of VANETs, in some extreme...
Piezoelectric stack with its large output force and small displacement, which cannot satisfy the requirement of the opening of the cone valve core of the actual situation. A piezoelectric hydraulic principle of the hydraulic actuators based on displacement amplification was put forward, the output displacement and piezoelectric stack driving volt length, area and enlarge the structure dimension parameters...
In this paper, we derive application-level reliability metrics of various safety applications with worst-case settings and vehicular environments based on an accurate analytical model in one dimension vehicular communication networks. The reliability related QoS metrics in both the MAC-level and the Application-level including packet reception ratio, T-window reliability, and awareness probability...
As one of the important economic provinces in China, Shandong province plays an important role in energy production and energy consumption. Based on the revised time-series data of the energy production and supply in 1985-2009 in Shandong province, this study has established a grey forecasting model GM (1, 1) and made the accuracy checking for it. Smoothing test and exponential test are employed here...
Precise fundus image features detection is an important factor for screening diabetic retinopathy. Some noises in fundus image features extraction need to be solved. This paper studies using phase information to attempt get better effect. We use and compare four phase-based approaches and get some instructive results.
To forecast land use change is important for land use management, With the development And improvement of the society, to use the land resource reasonably and effectively has become more and more important Data collection and integrate analysis are important to forecast land use change. so, model of land use change be built by using mathematics, which can be joined GIS. By this way, it cans quantificational...
Construct and analyze a static two-sector model, focused on the significance of the factor endowment structure on the optimal industrial structure. Find the optimum industry structure should be born within and is in direct ratio to the national factor endowment, because of the guiding role on the optimal allocation of resources. And the emergence of production services will increase the proportion...
In this paper, water distribution network model of typical central air conditioning system is established, all aspects of pipe network simulation carried out by various segments of the system pressure distribution and velocity distribution, such as analysis of the entire network of transportation and distribution characteristics. Through the analysis of pressure and pump power transformer and flow...
With the developing of industry, maintenance has become an important factor that influences survival and development of the business. There are numerous pieces of equipment in a power plant, but the maintenance requirement is different for respective equipment, so making condition based maintenance in a power plant is a systemic and integrative activity in maintenance management. As an interdisciplinary...
Knowledge sharing, the key point in knowledge management, becomes an important research issue gradually because of its great influence on the competitive power of enterprises. So, based on the review of the relevant researches in the field of knowledge sharing and marketing channels, this research analyzed the relationship between knowledge sharing and commitment, developed a theoretical model, and...
This article abstracts the essential organization influence variable from the variable analysis on the cause influencing the turnover intention of knowledge employees, i.e. the influence of enterprise value on knowledge employees. Meanwhile, basis on the closely relationship between value and POF, it makes a conclusion that the POF can decrease the turnover intention of knowledge employees and designs...
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