期刊文献+
共找到5篇文章
< 1 >
每页显示 20 50 100
Call for papers Journal of Control Theory and Applications Special issue on Approximate dynamic programming and reinforcement learning
1
《控制理论与应用(英文版)》 EI 2010年第2期257-257,共1页
Approximate dynamic programming (ADP) is a general and effective approach for solving optimal control and estimation problems by adapting to uncertain and nonconvex environments over time.
关键词 Call for papers Journal of Control Theory and Applications Special issue on Approximate dynamic programming and reinforcement learning
下载PDF
Impact of Africa Regional Food Security Program on Nigerian Farmers: The Case of National Special Program for Food Security 被引量:4
2
作者 P. O. Agbola S. A.Yusuf +1 位作者 A. A. Adubi D. O. Awotide 《Journal of Agricultural Science and Technology》 2010年第5期51-60,共10页
This paper examined the impact of National Special Program for Food Security (NSPFS) on the beneficiaries through a qualitative measurement of the food security status of the beneficiaries. A food insecurity index w... This paper examined the impact of National Special Program for Food Security (NSPFS) on the beneficiaries through a qualitative measurement of the food security status of the beneficiaries. A food insecurity index was estimated to measure the well-being of the beneficiaries as affected by the impact of the program. Beneficiaries were classified into four categories: food secure (41%), food insecure without hunger (46%), food insecure with moderate hunger (11%), and food insecure with severe hunger (2%). Perceptions of beneficiaries were measured. In conclusion, the program has had a positive impact and enhanced food security among the Nigerian beneficiaries. It is not without its short comings which include delayed and untimely disbursement of funds and lack of output markets, irrigation facilities, production inputs and adequate training on technology know-how. The default rate and number of debtors remain high among beneficiaries. Efforts should be made to correct the short comings to improve the effectiveness of the program and justify the huge financial resources that have been committed. 展开更多
关键词 National special program for food security BENEFICIARIES Nigeria.
下载PDF
Incremental Static Analysis of 2D Flow by Inter-Colliding Point-Particles and Use of Incompressible Rhombic Element 被引量:1
3
作者 Panagis G. Papadopoulos Christopher G. Koutitas Panos P. Lazaridis 《Open Journal of Civil Engineering》 2016年第3期397-409,共13页
A simple method is proposed, for incremental static analysis of a set of inter-colliding particles, simulating 2D flow. Within each step of proposed algorithm, the particles perform small displacements, proportional t... A simple method is proposed, for incremental static analysis of a set of inter-colliding particles, simulating 2D flow. Within each step of proposed algorithm, the particles perform small displacements, proportional to the out-of-balance forces, acting on them. Numerical experiments show that if the liquid is confined within boundaries of a set of inter-communicating vessels, then the proposed method converges to a final equilibrium state. This incremental static analysis approximates dynamic behavior with strong damping and can provide information, as a first approximation to 2D movement of a liquid. In the initial arrangement of particles, a rhombic element is proposed, which assures satisfactory incompressibility of the fluid. Based on the proposed algorithm, a simple and short computer program (a “pocket” program) has been developed, with only about 120 Fortran instructions. This program is first applied to an amount of liquid, contained in a single vessel. A coarse and refined discretization is tried. In final equilibrium state of liquid, the distribution on hydro-static pressure on vessel boundaries, obtained by proposed computational model, is found in satisfactory approximation with corresponding theoretical data. Then, an opening is formed, at the bottom of a vertical boundary of initial vessel, and the liquid is allowed to flow gradually to an adjacent vessel. Almost whole amount of liquid is transferred, from first to second vessel, except of few drops-particles, which remain, in equilibrium, at the bottom of initial vessel. In the final equilibrium state of liquid, in the second vessel, the free surface level of the liquid confirms that the proposed rhombing element assures a satisfactory incompressibility of the fluid. 展开更多
关键词 2D Flow Simulation Inter-Colliding Point-Particles Incremental Static Analysis Incompressible Rhombic Element Hydro-Static Pressure Distribution Flow from a Vessel to Another One “Pocket” Special Purpose Computer Program
下载PDF
A new strategy of integrating American culture with English teaching & learning by using VOA Special English feature programs
4
作者 XIA Kang-ming 《Sino-US English Teaching》 2010年第2期30-34,共5页
The paper mainly studies a new way of combining American culture with English language teaching and learning by means of the VOA Special English feature programs. It is based on a 5-year period of teaching practice, e... The paper mainly studies a new way of combining American culture with English language teaching and learning by means of the VOA Special English feature programs. It is based on a 5-year period of teaching practice, experience and reflection. This interactive, innovative, productive and student-centered approach is a far cry from the rigid, old, unproductive and teacher-centered approach of teaching British and American culture without combining language learning and practice as is commonly used here in Chinese colleges. The author also throws some light on how to use on-line teaching resources and how to cultivate independent learning on the part of the students he has worked with. 展开更多
关键词 new strategy teaching American culture English learning VOA Special program
下载PDF
Special Topic on Major Research Program: Catalysis Science for Carbon-based Energy Conversion
5
《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2017年第4期592-,共1页
The major research program,"Catalysis science for carbon-based energy conversion",from the national science foundation of China(NSFC)answers to the main strategic needs of China for the efficien use of carbo... The major research program,"Catalysis science for carbon-based energy conversion",from the national science foundation of China(NSFC)answers to the main strategic needs of China for the efficien use of carbon-based energy and targets to address the key scientifi issues involved in the catalytic interfaces.The research program aims to improve the catalytic activation of C–H and C–O bonds and the C–C coupling process, 展开更多
关键词 Catalysis Science for Carbon-based Energy Conversion Special Topic on Major Research Program
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部