16,830 research outputs found
Organocatalytic asymmetric Michael reaction with acylsilane donors
No full textWe have developed an organocatalytic asymmetric Michael reaction of acylsilane through the selection of acylsilane substrates and organocatalysts, thus creating a rare example of acylsilane alpha-alkylation with a chiral guanidine catalyst, which afforded products in good yields and high stereoselectivity. The corresponding adducts described here have also been demonstrated to be useful in the synthesis of unnatural amino acids and biologically active compounds
Fu-PusH Statement Finder 0.9
No full text<p>Das DFG-Projekt “Future Publications in den Humanities” untersucht die Potenziale des digitalen Publizierens in den Geisteswissenschaften und erarbeitet Handlungsempfehlungen für die bedarfsorientierte Weiterentwicklung von akademischen Informationsinfrastrukturen zur Unterstützung von Publikationsprozessen vor allem an Universitätsbibliotheken und Rechenzentren.</p>
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Zu diesem Zweck wurde eine Reihe von Experteninterviews durchgeführt. Die dabei erhobenen, aufbereiteten und anonymisierten Daten werden zur größeren Transparenz sowie zur Nachnutzung als offene Forschungsdatenpublikation im Fu-PusH Statement Finder zur Verfügung gestellt. </p>
<p>Zur Projektseite: http://www2.hu-berlin.de/fupush/statement-finder</p>
Reducing Greenhouse Gas Emissions via Industry Shifts and Regional Shares: An Interregional Dorfman-Samuelson-Solow Leontief Systems of China
No full textChina has promised to reduce nation’s carbon dioxide emissions in 2020 by at least 40% of its 2005 levels. This paper proposes that interregional industrial shifts might enable China to meet this goal. A Dorfman-Samuelson-Solow model is presented by using an environmental multiregional input-output table of China in a linear programming format and at given national carbon targets, with aim of maximizing national GDP, under constrains for both demand-supply balance and energy-use change within practical limits. In each province, excluding the energy preserved in the secondary energy, final consumption of 39 manufacturing commodities accounted by bottom-up and top-down methods, final consumption of other sectors, energy transition and loss are calculated by converting 20 energy types into carbon emissions. The model suggests that moving the energy and heavy industries out of China’s North Coast would help considerably, GDP losses could be counteracted by raising the output of high-tech industries in the South Coast and of selected services across most of China’s regions. Moreover, adjusting the energy mix toward cleaner resources would alleviate some pressure to reduce carbon emissions of heavy industry throughout China and of the energy industry in Central China
Reducing carbon emissions in China via optimal industry shifts: toward hi-tech industries, cleaner resources and higher carbon shares in less-developed regions
No full textThis paper uses an optimal interregional input-output model to focus on how interregional industrial shifts alone might enable China to reduce carbon intensity instead of national shifts. The optimal industry shifts assure integration of all regions by regional services and goods in which carbon emissions are embodied via energy consumption. Generally speaking, high-tech industries should concentrate in affluent regions to replace construction. Selected services should increase output shares across most of regions. Meanwhile, energy-intensive manufacturing, rather than agriculture, should decrease their shares to achieve the national annual growth constrained by nation’s carbon targets. Due to the need to decelerate energy use, carbon intensity goal puts particularly extreme pressure on less-developed regions to shutter heavy industries. Explicit shifts toward cleaner resources and renewable energy appear to be quite important for keeping coal mines in Central China working.Peer reviewedPublished under the title: Actions on climate change, Intended Reducing carbon emissions in China via optimal industry shifts: Toward hi-tech industries, cleaner resources and higher carbon shares in less-develop region
Fu Describing About the Author Himself: A Focus on Ban Gu "You tong fu"
No full textFrom Later Han dynasty onwards, the number of fu describing about the author himself has increased. There are several possible reasons for this, but the most important reason is probably that there was no other genre through which one could express oneself except for fu in this period. For instance, the fiveword poetry was still in the middle way of establishing its own style at that moment. Moreover, in Former Han, there were few opportunities for authors to talk about themselves in detail in fu, because the main readers were emperors and kings of countries. In Later Han, the readers had become more diverse. That is probably the reason why more fu began to mention about the authors themselves in this period. Ban Gu (32-92), who is a representative scholar of Later Han and also a man of letters, expressed his aim by writing "You tong fu". Its main content is that though one's encounter with a disaster or felicity is not always derived from our behavior, we have to have a strong will and take action to overcome disasters. This idea is supported by Ban Gu's experiences of not attaining his aim. Such experiences are common in Chinese authors. One of the earliest examples is Chu Ci. Also, Chu Ci is the one of the origins of fu. It is surprising that authors expressed things about themselves mostly in fu describing journeys. It may be easier to understand this tendency if we think they substituted the heaven wander in Chu Ci with a ground journey. Chu Ci was a model for authors to express their aim which could not come true, even if the journey on the ground and the wander in heaven are different
Convergence of Sample Path Optimal Policies for Stochastic Dynamic Programming
No full textWe consider the solution of stochastic dynamic programs using sample path estimates. Applying the theory of large deviations, we derive probability error bounds associated with the convergence of the estimated optimal policy to the true optimal policy, for finite horizon problems. These bounds decay at an exponential rate, in contrast with the usual canonical (inverse) square root rate associated with estimation of the value (cost-to-go) function itself. These results have practical implications for Monte Carlo simulation-based solution approaches to stochastic dynamic programming problems where it is impractical to extract the explicit transition probabilities of the underlying system model
Fu-PusH - DFG-Projekt: Future Publications in den Humanities
No full textDas DFG-Projekt "Future Publications in den Humanities" (Fu-PusH) untersuchte die Potenziale des digitalen Publizierens in den Geisteswissenschaften und erarbeitete anhand von Szenarien Handlungsempfehlungen für akademische Infrastruktureinrichtungen wie insbesondere Universitätsbibliotheken und Rechenzentren, um Publikationsprozesse zu unterstützen und dabei den funktionalen Anforderungen unterschiedlicher geisteswissenschaftlicher Fachrichtungen gerecht zu werden.
Auf dem Poster werden anhand einer Tag-Sonne die zentralen Potenziale des geisteswissenschaftlichen Publizierens als thematische Relationen visualisiert, die sich im Rahmen der Datenauswertung von Experteninterviews ergaben. Die angeführten Statements zum Open-Access-Gedanken in den Geisteswissenschaften sind zwar nicht repräsentativ, bringen aber kritische Perspektiven zum Ausdruck, die Anlass für eine vertiefte und differenzierte Auseinandersetzung mit den gewonnen Projektergebnissen bieten sollen.The project Fu-PusH was funded by the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG)
Online Iterative Adaptive Dynamic Programming Approach for Solving the Zero-Sum Game for Nonlinear Continuous-Time Systems with Partially Unknown Dynamics
No full textThe current study presents an online iterative adaptive dynamic programming approach to resolve the zero-sum game (ZSG) for nonlinear continuous-time (CT) systems containing a partially unknown dynamic. The Hamilton-Jacobian-Issacs (HJI) equation is solved along the state trajectory according to the value function approximation and the policy improvement online. Relaxed dynamic programming is utilized to ensure the algorithm’s convergence. Model and costate networks were established to conduct the method. Computational simulations are performed to present the efficiency of the algorithm.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Control & Simulatio
Note of congratulations from Jack Huang to Dr. Frank Fu, January 1, 1983
No full textA note of congratulations to Dr. Frank H. Fu (Fu Haojian) from Springfield College Alum, Jack Huang, Class of 1936, dated January 1, 1983. The card has country lane scene on the front, with a tree with pink leaves, a buttfly, and a tree with its leaves still green. There is the roof of a house just visible over the hill. It also says Congratulations. Inside is short message.Mr. Huang wrote a short personal note congratulating him for his efforts and the recent recognition by then President Ronald Reagan, or the actor as he refers to him, and saying how proud the Chinese are of him. An author of 17 textbooks and more than 100 journal articles, Frank H. Fu, G’73, DPE’75, has worked across the world in China, Canada, and the United States. Throughout his career, he has received many distinguished honors, including the Medal of Honor in 2009 by the SAR Government of Hong Kong.
Fu has held positions at institutions such as the Chinese University of Hong Kong and Springfield College, where he served as director of the International Center starting in 1978. Five years later, Fu returned to Hong Kong, but has since remained actively involved with Springfield College, participating in talks on the campus and even hosting a gathering of nearly 60 alumni in Hong Kong.
Currently, Fu is the associate vice president of Hong Kong Baptist University, where he also works as the director of the Dr. Stephen Hui Research Centre of Physical Recreation and Wellness. In addition, Fu is president of the Society of Chinese Scholars on Exercise Physiology and Fitness, chairperson of Hong Kong Coach Education Committee, a research fellow of the Research Consortium of SHAPE America, and an international fellow of the National Academy of Kinesiology
Practical application of on-line partial discharge monitoring technique on 500kV shunt reactor
No full textConsidering the damage mechanism of oil-impregnated paper insulation in power transformers, shunt reactors and other high voltage electrical apparatus caused by partial discharge, a concept of “destructive partial discharge” is introduced in this paper. The intensity of this discharge is regarded as several thousands pico-coulomb (pC) and may cause the insulation a fatal damage. An oil-paper insulation is usually able to withstand this type of partial discharge for a period of time prior to failure. This provides engineers a time window to detect it. This paper describes an on-line partial discharge monitoring system for 500kV shunt reactors. The commission results from 3 single-phase shunt reactors either connected or disconnected to the grid showed that the on-line partial discharge detecting system has a high noise immunising ability. Two years later after the installation, a pre-warning signal was received from one shunt reactor indicating the existence of an intermittent discharge. The acoustic emission system located its position at the low end of the high voltage bushing in the oil. Dissolved gasses analysis (DGA) in the oil suggested the presence of partial discharge, as acetylene (C2H2) was as high as 20ppm. PD activity was further confirmed by a physical examination on the reactor
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