In the paper, the core ideas of Java language generic mechanism are described and analyzed in detail, including the generic class, generic method, generic interface, generic wildcard as well as erasure and restrictions on generics, and the Java generic functions are also summarized. An ingenious KLEEN...

Generic programming has emerged as a paradigm for the development of highly reusable and safe software libraries. Generic constraint mechanism explicitly describes which concrete types can instantiate generic types. As it can detect and verify the validity of generic parameter instantiated, thereby guarantee...

This paper compared the performance of SVG and Flash when applied in WebGIS from different aspects, including basic characteristics, data storage, page rendering speed, interactivity etc. Through experiments and analysis, the result shows that: SVG and Flash can be used for visualizing WebGIS vector...

This studyproposes a new learning model for improving problem solving and programming skills. To solve a real world problemusing IT, the problem solving and programming skills are important. In this study, we propose and develop a learning model that can help to improve problem solvingand programming...

Big data era, modern knowledge representation structures do not have appropriate structural support for parallel computing, unable to meet the time requirements of large data processing. We proposed one knowledge representation structure for cloud platform called SUMMUS Semantic Encoding Forest. Through...

Nowadays, friend recommendation is one of the most popular applications for online social network, but it is often difficult to find truly useful information by using this function. The inaccurate friend recommendation results largely block the online social interaction among micro-blog users. Thus,...

In order to study the performance of Orthogonal Frequency Division Multiplexing (OFDM) communication system, this article establishes two communication system models of OFDM, which are simulated with MATLAB. Based on this, simulation curves of OFDM performance on different channel models and channel...

Recent years, because of ever-fast expanding in the consumption of fossil fuel, the air quality gets increasingly bad in Beijing. In order to reduce air pollutants and improve the public living environment, the electric vehicles (EVs) were introduced and encouraged to be adopted by the public, coupled...

In this study, the relationship of air permeability properties to rain rubber boot were investigated. There are all kinds of styles, colour and pattern rain rubber boots now in the market. But most of the costumers rather a wet shoe than wearing rain rubber boots. The mainly reason is the air permeability...

The tunnel construction has made considerable progress in our country for years, resulting in tunnel problems. A survey revealed that the common tunnel problems in our country mainly include lining erosion, water damage, basement sink, and mud-pumping etc. These problems seriously affects the tunnel’s...

With the rapid development of social life, Tibetan language life is also constantly changes, a variety of contradictions in language are obvious. To grasp the dynamic language comprehensively and accurately could be better to research and use this kind of language resources, also could achieve the goal...

This paper investigates the dependence of the exchange rate of Onshore RMB and Offshore RMB against U.S. dollar, i.e. CNY and CNH, based on copula models. We select ten different copulas to construct multivariate distribution for RMB exchange rate. The empirical results show that time-invariant Student-t...