摘要：Emulating periodic main wing movement of a bird for generating lift and thrust remains a significant challenge in developing a robotic *** sequences of main wing motion are comprised of flapping,folding,bending,and *** this paper,we concentrate on the flapping and folding motion,and design two wing mechanisms based on a 4-bar linkage structure:one is only for Flapping Motion(FM)and the other is for simultaneous Flapping and folding Motion(FFM)during a wing *** derive relationships between length and angle of links to analyze kinematic characteristics of the mechanisms and conduct an optimization to select the length parameters of links that allow maximization of the flapping *** run a simulation to confirm the performance of the optimized parameters by examining physical properties,and fabricate two wing mechanisms *** particular,the folding motion is achieved without using an additional *** measurements to investigate a lift profile of each mechanism and their quantitative comparison of the performance of both types confirm the benefits of the folding motion in the perspectives of wing frequency and *** expect that our kinematic formulation,design procedures,and comparative measurement results can help develop a wing mechanism to create a truly biomimetic robotic bird.

摘要：Functional proteins designed de novo have potential application in chemical engineering,agriculture and *** binding sites are commonly used to incorporate *** on a de novo designed protein DS119 with aβαβstructure,we have computationally engineered zinc binding sites into it using a home-made searching *** out of the eight designed sequences tested were shown to bind Zn2+with micromolar affinity,and one of them bound Zn2+with 1:1 *** is the first time that metalloproteins with anα,βmixed structure have been designed from scratch.

摘要：The rapid development in the digital circuit design enhances the applications on very large scale integration era. Encoders are one among the digital circuits found in all communication systems. The polar encoding is mainly meant for its channel achieving property. It finds its application in communications, sensing and information theory. This coding proposed by Erdal Arikan is significant because of its zero error floors and simple architecture for hardware implementation. In this paper, a folded polar encoder is designed to start from the fully parallel architecture and proceeds with its data flow graph, delay requirement calculation, lifetime analysis and register allocation, which results in a very large scale integration architecture with minimum hardware utilization. The results are simulated for 4 and 8 parallel folded 32-bit polar encoder using Xilinx 14.6 ISIM and implemented in Virtex 5 field programmable gate array. A comparison is made on fully parallel and various folding techniques based on their resource utilization.

摘要：Y2002-63119-581 0218582最佳可编程逻辑阵合并的有效0-1线性程序设计=Anefficient 0-1 linear programming for optimal PLA folding[会,英]/Raahemifar, K. & Ahmadi, M.//The IEEEInternational Symposium on Circuits and Systems Vol. 2of 5.—581～584(HE)