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.
In this paper, a quality-of-experience (QoE)-based user scheduling scheme for delay-sensitive mobile cloud services (MCS) is proposed. The proposed scheme aims at optimizing the user QoE, which is mainly determined by both the application-level and network-level quality of services. Packet delay, as an essential factor affecting QoE, is discussed under the context of QoE optimization. The optimization...
This paper first studies the math model for heavy duty vehicle (HDV) control systems with focus on the general 2nd order system model that can be represented by a 2nd order differential equation. For general 2nd order differential equations, the paper discusses them in two categories, one is the homogeneous and the other is non-homogeneous, and illustrates the general closed-form solutions for each...
Breast cancer has been one of leading cancers in women around the world. A great number of digital mammograms are generated in hospitals and screening centers. Those digital mammograms can further be used for study and research by medical professionals. Content-based image retrieval refers to the retrieval of images whose contents are similar to a query example, using information derived from the...
Based on the statistics data of cargo throughput and GDP of Nanjing from 1978 to 2009, this paper analyzes the relationship between river port logistics and urban economic growth by employing co-integration theory and Granger causality test. The empirical result denotes that there exists a long-term equilibrium relationship and unilateral Granger causality relationship between river port logistics...
Based on the design of one kind multistage flameproof submerge pump for coal mine, the influence of the geometric parameters to the performance of the impeller was analyzed. The performance of the pump was predicted by the commercial software FLUENT. Reynolds-averaged Navier-Stokes equations was discretized, solved with κ-ε turbulence model and the SIMPLEC algorithm in double coordinate system. The...
By now body scanning technology is the most up-to-date body measuring technology. In fact this technology is not only used to achieve body sizes but also can help to make deeper science research. In this article we discuss a new method for describing the 3D shape of woman warm jacket and set up its mathematic model, which is by dint of body scanning technology. Patterns of woman warm jacket were collected...
Based on the definition and the classification of the eco-environmental water requirements, the minimum eco-environmental water requirements in the typical county at the mid and downstream of the Yellow River are computed. In the process, Penman-Monteith method and the method based on the theory of hydrological cycle are used. The results show that the water consumed by the eco-environment reaches...
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.