This book is devoted to the most used methodologies for performance evaluation: simulation using specialized software and mathematical modeling. An important part is dedicated to the simulation, particularly in its theoretical framework and the precautions to be taken in the implementation of the experimental procedure. These principles are illustrated by concrete examples achieved through operational simulation languages (OMNeT ++, OPNET). Presented under the complementary approach, the mathematical method is essential for the simulation. Both methodologies based largely on the theory of probability and statistics in general and particularly Markov processes, a reminder of the basic results is also available.
Since the end of the Cold War, developing a better framework to correctly recognize which direction globalization and the transition will take us has been necessary. The transition economies of China and Central Europe, in particular, hold significant implications for East Asian integration and EU enlargement, respectively. This book examines the processes of transition, regional development and globalization, focusing on China and Central Europe, and seeks to identify a new and stable international framework with improved outcomes for all.Divided into three parts, the book first analyzes several key economic issues concerning transition in China and Central Europe; it then examines these issues from the viewpoint of international relations; finally, it considers potential future directions for China, Japan, US and EU. It therefore constitutes an important contribution to our understanding of the ongoing process of globalization and ways to improve Sino-Japanese-EU-American-Central European economic relations.
Polymer Electrolyte Membrane (PEM) fuel cells convert chemical energy in hydrogen into electrical energy with water as the only by-product. Thus, PEM fuel cells hold great promise to reduce both pollutant emissions and dependency on fossil fuels, especially for transportation—passenger cars, utility vehicles, and buses—and small-scale stationary and portable power generators. But one of the greatest challenges to realizing the high efficiency and zero emissions potential of PEM fuel cells technology is heat and water management. This book provides an introduction to the essential concepts for effective thermal and water management in PEM fuel cells and an assessment on the current status of fundamental research in this field. The book offers you: • An overview of current energy and environmental challenges and their imperatives for the development of renewable energy resources, including discussion of the role of PEM fuel cells in addressing these issues; • Reviews of basic principles pertaining to PEM fuel cells, including thermodynamics, electrochemical reaction kinetics, flow, heat and mass transfer; and • Descriptions and discussions of water transport and management within a PEM fuel cell, including vapor- and liquid-phase water removal from the electrodes, the effects of two-phase flow, and solid water or ice dynamics and removal, particularly the specialized case of starting a PEM fuel cell at sub-freezing temperatures (cold start) and the various processes related to ice formation.
There is widespread concern in all English speaking countries at the rapid decline in study of languages. The promise of 'languages for all' in the UK and North America in the 1970s marked a shift from languages as élite subjects for the privileged few, but this promise has not been fulfilled. This book explores the reasons for and solutions to this decline. More importantly, it looks at how these trends have been reversed in successful school programs and the implications of this for language education policy makers. The study draws on an analysis of data from 600 primary, secondary and community languages schools over six years and from detailed case studies in a representative sample of 45 successful schools. The book proposes a range of strategies to address the decline: from engaging classroom learning, assessment outcomes and embedding languages as central in school curriculum on the one level, to a mix of incentives and mandation for language study, especially at upper secondary school level. The authors explore the impact of learning languages on the thinking, educational experiences and outcomes of young people across a range of ethnic backgrounds and socioeconomic statuses. They show the importance of having equal access to languages study in a world where young people will have increasingly more diverse working lives and argue that the gap in languages between policy and uptake is really a gap in the thinking of policy makers and government.
Invisible Planets, edited by multi award-winning writer Ken Liu--translator of the bestselling and Hugo Award-winning novel The Three Body Problem by acclaimed Chinese author Cixin Liu--is his second thought-provoking anthology of Chinese short speculative fiction. Invisible Planets is a groundbreaking anthology of Chinese short speculative fiction. The thirteen stories in this collection, including two by Cixin Liu and the Hugo and Sturgeon award-nominated “Folding Beijing” by Hao Jingfang, add up to a strong and diverse representation of Chinese SF. Some have won awards, some have garnered serioius critical acclaim, some have been selected for Year’s Best anthologies, and some are simply Ken Liu’s personal favorites. To round out the collection, there are several essays from Chinese scholars and authors, plus an illuminating introduction by Ken Liu. Anyone with an interest in international science fiction will find Invisible Planets an indispensable addition to their collection. For more Chinese SF in translation, check out Broken Stars. Stories: “The Year of the Rat” by Chen Qiufan “The Fist of Lijian” by Chen Qiufan “The Flower of Shazui” by Chen Qiufan “A Hundred Ghosts Parade Tonight” by Xia Jia “Tongtong’s Summer” by Xia Jia “Night Journey of the Dragon-Horse” by Xia jia “The City of Silence” by Ma Boyong “Invisible Planets” by Hao Jingfang “Folding Beijing” by Hao Jingfang “Call Girl” by Tang Fei “Grave of the Fireflies” by Cheng Jingbo “The Circle” by Liu Cixin “Taking Care of God” by Liu Cixin Essays: “The Worst of All Possible Universes and the Best of All Possible Earths: Three-Body and Chinese Science Fiction” by Liu Cixin and Ken Liu “The Torn Generation” Chinese Science Fiction in a Culture in Transition” by Chen Qiufan and Ken Liu “What Makes Chinese Science Fiction Chinese?” by Xia Jia and Ken Liu At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.
Streamflow is not measured at every location in a stream network. Yet hydrologists, State and local agencies, and the general public still seek to know streamflow characteristics, such as mean annual flow or flood flows with different exceed- ance probabilities, at ungaged basins. The goals of this guide are to introduce and familiarize the user with the weighted- multiple-linear regression (WREG) program, and to also provide the theoretical background for program features. The program is intended to be used to develop a regional estima- tion equation for streamflow characteristics that can be applied at an ungaged basin, or to improve the corresponding estimate at continuous-record streamflow gages (henceforth referred to as simply gages) with short records. The regional estimation equation results from a multiple-linear regression that relates the observable basin characteristics, such as drainage area, to streamflow characteristics (for example, Thomas and Benson, 1970; Giese and Mason, 1993; Ries and Friesz, 2000; Eng and others, 2005; Eng and others, 2007a; Eng and others, 2007b; Kenney and others, 2007; Funkhouser and others, 2008).
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