摘要：In this study we present the design and realization of a tunable dual band wireless power transfer(TDB-WPT)coupled resonator *** frequency response of the tunable band can be controlled using a surface-mounted *** transmitter(Tx)and the receiver(Rx)circuits are *** top layer contains a feed line with an impedance of 50Ω.Two identical half rings defected ground structures(HR-DGSs)are loaded on the bottom using a varactor *** propose a solution for restricted WPT systems working at a single band application according to the operating *** effects of geometry,orientation,relative distance,and misalignments on the coupling coefficients were *** validate the simulation results,the proposed TDB-WPT system was fabricated and *** system occupied a space of 40 mm×40 *** can deliver power to the receiver with an average coupling efficiency of 98%at the tuned band from 817 to 1018 MHz and an efficiency of 95%at a fixed band of 1.6 GHz at a significant transmission distance of 22 *** results of the measurements accorded well with those of an equivalent model and the simulation.

摘要：INTRODUCTIONTurbomaChinery,especiallycompressorcascade,******...

摘要：In communication networks (CNs),the uncertainty is caused by the dynamic nature of thetraffic *** there is a need to incorporate the uncertainty into the network bandwidthcapacity *** this purpose,this paper developed a fuzzy methodology for network bandwidthdesign under demand *** methodology is usually used for offline traffic engineeringoptimization,which takes a centralized view of bandwidth design,resource utilization,and *** this proposed methodology,uncertain traffic demands are first handled into a fuzzynumber via a fuzzification *** a fuzzy optimization model for the network bandwidthallocation problem is formulated with the consideration of the trade-off between resource utilizationand network ***,the optimal network bandwidth capacity can be obtained bymaximizing network revenue in ***,an illustrative numerical example is presented for thepurpose of verification.

摘要：A numerical procedure for hydrodynamic redesign of the conventional vaned diffuser into the low solidity vaned diffuser by means of a real-coded genetic algorithm with Boltzmann, Tournament and Roulette Wheel selection is presented. In the first part, an investigation on the relative efficiency of the different real-coded genetic algorithm is carried out on a typical mathematical test function. The real-coded genetic algorithm with Boltzmann selection shows the best optimization performance compared to the Tournament and Roulette Wheel selection. In the second part, an approach to redesign the vaned diffuser profile is introduced. Goal of the optimum design is to search the highest static pressure recovery coefficient and low solidity vaned diffuser. The result of the low solidity vaned diffuser optimum design confirms that the efficiency and optimization performance of the real-coded Boltzmann selection genetic algorithm outperforms the other selection methods. A comparison between the designed low solidity vaned diffuser and original vaned diffuser shows that the diffuser pump with the redesigned low solidity vaned diffuser has the higher static pressure recovery and improved total hydrodynamic performance. In addition, the smaller outlet diameter of designed vaned diffuser tends to a more compact size of diffuser pump compared to the original diffuser pump. The obtained results also demonstrate the real-coded Boltzmann selection genetic algorithm is a promising optimization algorithm for centrifugal pumps design.

摘要：This is a brief summary of a paper presented at the 5th japan-China Joint Conference on Graphics Education in Osaka 2001.

摘要：In this paper the importance of eometry?and raphics?for the advancement of science and knowledge in 19th century is pointed out. Klein and Müller reform of geometry syllabus in 19th century and the education situation of Geometry and Graphics in Europe during the last third of 20th century are introduced. The problems of geometry and graphics education during the next decedes and six proposals are presented.

摘要：虽然日本经济处于长期低迷状态,但有趣的是,在人们经历了疯狂的消费期后,便开始追求生活质量。他们对在室内空间中占有重要地位的家具设计的要求,也呈现出前所未有的强烈。在我们编辑这组"日本室内设计"专辑时,突然发觉:到底哪些才是属于日本的室内设计呢?实际上这是很难用三言两语说清楚的问题。因为几乎国际上的大型品牌,现今都在日本有销售点和分公司,早已融入围际时尚行列的日本室内设计。

摘要：Soft In Way Inc. performed the aerodynamic design of a 4 stages high pressure radial blower with vaneless diffusers and deswirlers for DMW Corporation in 2021. The nominal pressure ratio of the machine is near *** a pressure ratio often characterizes what would typically be called a compressor, especially if the compression work is performed in one stage. For the subject machine of the present study, the compression work is split into 4 *** paper describes the design procedure for this blower, initially focusing in depth on the tradeoffs between work split,rotor diameter, and rotor vane back-sweep angle. The paper then presents a further design and optimization work of different variants of diffuser and deswirler based on aerodynamic performance for this 4 stages radial blower. The number of deswirler blades in the return channel was reduced from 19 to 10 in consideration of manufacturing requirements. To minimize losses in performance due to reduced blade number, several candidates of varied geometry shape deswirler blades were obtained from an automatic design and optimization workflow combining with 3D CFD calculation. All candidates of deswirler were implemented to the entire 4 stages radial blower to analyze machine performance by 3D CFD calculation and the best 10-blade deswirler geometry was determined. 3D CFD analysis shows that 10 blades of deswirler is unable to provide the same pressure rise and efficiency as the original design with 19 blades when all other parts of the design, such as rotor and diffuser are maintained the same. To further improve the blower performance, the similar automatic workflow was applied to study vaned diffuser influence to the blower performance based on the new blower configuration. The number and geometry of best diffuser blades was obtained from the automatic workflow and entire blower performance with vaned diffuser was analyzed and validated by 3D CFD calculation. After finalizing the aerodynamic flow path geome

摘要：The purposes of this study are 1) to get another perspective related to the role of creative industries in national economy of japan from 1995-2005 and 2) to know the ways to improve these sectors. This study employs Input-Output (IO) analysis as a tool of analysis. More specifically, this study uses simple output multipliers and demand-pull IO quantity model. Comparison with previous study is conducted in order to achieve the first objective. Another perspective related to above role is obtained from this study, namely creative industries, using simple output multipliers method, did not have an important role in national economy of japan in analysis period. The results also show that the patterns of total output of creative industries of japan on future period are not identic. Nevertheless, these sectors have one similarity, namely the modification of import will decrease their total output. This phenomenon indicates that import restriction related to these sector’s products is needed.

摘要：针对大断面隧道初期支护拱架在承载时易发生平面外失稳的问题,本文通过开展单拱架全比尺试验和考虑纵向连接的拱框架结构的数值试验以及现场对比试验,对纵向连接与拱架组成的拱框架结构进行优化研究,使其横向上有足够承载能力、纵向上有较高稳定性。研究结果表明,单个拱架的破坏模式是局部面外失稳导致整体承载力丧失,考虑纵向连接的拱框架结构的平面内承载力和平面外稳定性都得到增强。通过调整纵向连接间距和拱架间距也可以调整初期支护拱框架结构和喷射混凝土的内力分担比,以充分发挥初期支护的承载能力,但纵向连接间距应小于1500 mm,拱架间距也应小于1200 mm。因而,在不改变初期支护现有结构形式的前提下,通过合理地布设纵向连接与拱架形成的具有空间承载效应的拱框架结构,不仅可以保证初期支护的承载能力,而且还提高施工效率和经济效益。研究成果可指导大断面隧道初期支护结构设计。