Bøker av Qiwei Han

The book is based on stochastic theory of sediment motion, particularly the theory of transition intensities.It provides a complete theory and equation system of non-equilibrium transport of non-uniform suspended load. The content proposed theory reports, for the first time in literature, the general boundary condition of diffusion equations of non-equilibrium transport with transition intensities. The book also introduces the theoretical expressions of size distribution of the carrying sediment capacity, efficient bed material grade, and saturation recovery coefficientThis book describes the application of non-equilibrium transport theory and provides solutions to some long-standing unsolved controversial problems related to sediment transport. It establishes a generic mathematic model of reservoir sedimentation and river channel evolution; illustrates the same transport regulars of wash load and bed material load; demonstrates the multi-valued nature of carrying-sediment capacity and its single-valued consideration; and describes the mechanism of bed material coarsening. This book is of interest to a wide audience including students, technicians, and academics, primarily working in the field of river hydra-dynamics. In addition, this book receives attention from the research community working in fields, such as hydrogeology, hydraulic engineering, river navigation, wastewater treatment, and environmental protection

Today knowledge has become pivotal resource for the modern economy. The need to protect innovative efforts thus is critically desired. Intellectual Property Rights (IPR) provided by the governmental agencies encourage innovators to disclose their valuable inventions to the public, in return for the temporarily granted legal rights to exclude other from imitation. As the surge of patenting activities appeared in recent 20 years,the current practice of patent system reveals to be controversial, especially with regard to the Information and Communication Technology (ICT) industry. The situation is even worse within the context of ICT standardization where IPR protection, standard setting and competition potentially conflict with each other. In this book, we conduct comprehensive review considering challenges brought by IPR system and convoluted interaction underlying the IPR, competition and standardization towards 4G. We then build up the evaluation framework which takes care of these complex relationships and mixed effects by means of IPR analysis. Finally we present the empirical evaluation result on Long Time Evolution , which will be the major path evolved from 3G towards 4G.