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981.
982.
Mohamed Ammar Abbassi Najla Grioui Kamel Halouani Andr Zoulalian Belkacem Zeghmati 《Fuel Processing Technology》2009,90(10):1278-1285
A pilot plant of biomass pyrolysis using pyrolysis products as fuel has been tested and shown to improve energy balance of the process and to be environmentally friendly by avoiding rejection of pyrolysis pollutants fumes into the atmosphere. The high number of parameters involved in a pyrolysis process makes it difficult to specify an optimum procedure for charcoal yield and pyrolysis cycle durability. So the knowledge of the essential parameters which govern the kinetics mechanisms of the biomass thermal decomposition and the combustion of pyrolysis gases is very useful to understand the operating cycle of the plant. In the present study a thermochemical model is developed in order to simulate and control the operating cycle of the system. The effect of the inlet molar air flow rate on the temporal evolution of biomass mass loss rate and temperatures in the different active zones of the pilot plant as well as the determination of the critical inlet molar air flow rate for which accidental runaway of combustion reactions occurs are presented. To avoid this accidental phenomenon a Proportional-Integral-Derived (PID) anticipated regulation is used in order to control temperatures evolution in the different zones of the device and avoid the runaway of combustion reactions. 相似文献
983.
In groupware tools, the activation of a function may affect other users who might have conflicting interests. We developed technical mechanisms to support users in resolving them. Contrary to current implementations of groupware tools, these mechanisms strengthen the position of the users who are affected by the activation of said functions. Supporting the visibility of a function's activation, and providing a channel for communication or means to intervene against the function's activation are approaches which constitute a framework to implement these mechanisms. We conclude with showing implementation examples of the framework and their evaluation in the POLITeam project. 相似文献
984.
985.
Spinrad Tracy L.; Eisenberg Nancy; Cumberland Amanda; Fabes Richard A.; Valiente Carlos; Shepard Stephanie A.; Reiser Mark; Losoya Sandra H.; Guthrie Ivanna K. 《Canadian Metallurgical Quarterly》2006,6(3):498
The differential relations of children's emotion-related regulation (i.e., effortful control and impulsivity) to their personality resiliency, adult-rated popularity, and social competence were examined in children who were 4.5-7.9 years old and who were remeasured 2 years later. Parents and teachers reported on all constructs, and children's attentional persistence was observed. Structural equation modeling was used to test the mediating role of resiliency on the relations between regulation/control and popularity using two-wave longitudinal data. The results provide some evidence of the mediating role of resiliency in the relations between effortful control and popularity, provide some evidence of bidirectional effects, and also buttress the view that emotional regulation should be differentiated into effortful and reactive forms of control. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
986.
Bray Steven R.; Brawley Lawrence R.; Millen Jennifer A. 《Canadian Metallurgical Quarterly》2006,51(3):224
Objective: To examine cardiac rehabilitation program (CRP) participants' beliefs about their interventionists (proxy efficacy and reliance), self-efficacy, and exercise behavior during transition to home-based exercise. Participants and Design: Participants were 44 (16 women and 28 men) CRP outpatients (Mage = 59.43 ± 13.53 years). The design was prospective, with proxy efficacy and reliance as well as self-efficacy being used to predict two outcomes: self-regulatory self-efficacy and home-based exercise. Results: After self-regulatory efficacy reported earlier in the program was controlled for, proxy reliance predicted later program self-regulatory efficacy for home-based exercise (adjusted R2 = .10, p = .02). Proxy efficacy for self-regulation predicted home-based exercise frequency (adjusted R2 = .18, p = .01). Greater proxy efficacy for self-regulation was associated with higher exercise frequency. Conclusion: CRP participants' beliefs in the capabilities of their exercise consultants to help them develop self-regulatory skills play a role in how much exercise they do after supervised rehabilitation. Yet, individuals who strongly rely on their interventionists to assist them in exercising report weaker self-efficacy for exercising on their own. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
988.
989.
PDF文件链接信息提取与修改 总被引:2,自引:0,他引:2
主要介绍了航空规章采用PDF文件格式,使用了书签、链接功能;利用AdobeAcrobat提供的编程接口编写Plug-in插件,实现了文件内和文件间的链接信息自动生成技术。 相似文献
990.
In this paper, we will establish a framework that can convert the robust output regulation problem for discrete‐time nonlinear systems into a robust stabilization problem for an appropriately augmented system consisting of the given plant and a specific dynamic system called internal model. We then apply this framework to solve the local robust output regulation problem for a general class of discrete‐time nonlinear systems. The results of this paper gives a discrete‐time counterpart of the recent results on the continuous‐time robust output regulation problem. Copyright © 2005 John Wiley & Sons, Ltd. 相似文献