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发电机工励与备励并列运行分析
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作者 陈月亮 《江苏电力技术》 1998年第Z09期35-36,共2页
关键词 发电机 励磁系统 工励系统 备励 并列运行
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发电机励磁系统工励倒换备励的改进
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作者 姜鹏远 《山东电力技术》 2001年第3期60-61,共2页
关键词 同轴直流发电机 励磁系统 工励倒换备励过程 技术改进
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ANALYSIS OF WORKING MODES OF HYBRID EXCITATION DOUBLY SALIENT MOTOR 被引量:3
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作者 秦海鸿 赵志英 +1 位作者 龚春英 严仰光 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2006年第4期264-271,共8页
A more accurate analysis method on working modes is proposed by considering the winding terminal voltage and the eondueting power device as state parameters. For the three-phase hybrid excitation doubly salient machi... A more accurate analysis method on working modes is proposed by considering the winding terminal voltage and the eondueting power device as state parameters. For the three-phase hybrid excitation doubly salient machine (HEDSM) motor and its three-phase full-bridge inverter, in the proposed analytical method, all possible working modes are generally listed. Then, with the H_PWM-L_ON control strategy, the working modes are detailed with eorresponding equivalent circuits. Experimental results verify the robustness of the analysis. 展开更多
关键词 hybrid excitation doubly salient motor working mode COMMUTATION current tail
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Bulk-Silicon Resonant Accelerometer 被引量:3
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作者 贾玉斌 郝一龙 张嵘 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2005年第2期281-286,共6页
Resonant accelerometer is designed,which includes two double-ended tuning forks,a proof mass,four-leverage system amplifying inertial force,and drive/sense combs.Each tuning fork is electrostatically actuated and sens... Resonant accelerometer is designed,which includes two double-ended tuning forks,a proof mass,four-leverage system amplifying inertial force,and drive/sense combs.Each tuning fork is electrostatically actuated and sensed at resonance using comb electrodes.The device is fabricated using MEMS bulk-silicon technology,whose sensitive degree is 27 3Hz/g,and the resolution is 167 8μg. 展开更多
关键词 MEMS accelerometer resonant driving and sensing bulk-silicon process frequency shift
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谈发电机工备励切换
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作者 何晓军 《中小企业管理与科技》 2009年第12期205-205,共1页
当发电机工作励磁机发生故障不能运行时,需要倒至备用励磁机运行。因此,发电机工备励切换操作是发电厂重要操作之一。本文阐述了发电机工备励切换前的要求和准备工作,工备励切换的方法,操作中注意事项,及备用励磁机运行时,值班人员如何... 当发电机工作励磁机发生故障不能运行时,需要倒至备用励磁机运行。因此,发电机工备励切换操作是发电厂重要操作之一。本文阐述了发电机工备励切换前的要求和准备工作,工备励切换的方法,操作中注意事项,及备用励磁机运行时,值班人员如何进行备用励磁机所带发电机无功的调整,以保证发电机的安全稳定运行。 展开更多
关键词 发电机 工励 备励 切换
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Integrated circuit for single channel neural signal regeneration 被引量:1
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作者 李文渊 王志功 《Journal of Southeast University(English Edition)》 EI CAS 2008年第2期155-158,共4页
Based on the 4-channel neural signal regeneration system which is realized by using discrete devices and successfully used for in-vivo experiments on rats and rabbits, a single channel neural signal regeneration integ... Based on the 4-channel neural signal regeneration system which is realized by using discrete devices and successfully used for in-vivo experiments on rats and rabbits, a single channel neural signal regeneration integrated circuit (IC)is designed and realized in CSMC ' s 0. 6 μm CMOS ( complementary metal-oxide-semiconductor transistor ) technology. The IC consists of a neural signal detection circuit with an adjustable gain, a buffer, and a function electrical stimulation (FES) circuit. The neural signal regenerating IC occupies a die area of 1.42 mm × 1.34 mm. Under a dual supply voltage of ±2. 5 V, the DC power consumption is less than 10 mW. The on-wafer measurement results are as follows: the output resistor is 118 ml), the 3 dB bandwidth is greater than 30 kHz, and the gain can be variable from 50 to 90 dB. The circuit is used for in-vivo experiments on the rat' s sciatic nerve as well as on the spinal cord with the cuff type electrode array and the twin-needle electrode. The neural signal is successfully regenerated both on a rat' s sciatic nerve bundle and on the spinal cord. 展开更多
关键词 neural signal regeneration function electrical stimulation integrated circuit ELECTRODE CMOS technology
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A Magnetic Induction Tomography System for Prospective Industrial Processing Applications 被引量:2
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作者 Hsin-Yu Wei Manuchehr Soleimani 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2012年第2期406-410,共5页
Magnetic induction tomography(MIT) is one of the newest industrial process imaging techniques.Main industrial applications of the MIT imaging are in high conductive flow imaging.However,recently it has been shown that... Magnetic induction tomography(MIT) is one of the newest industrial process imaging techniques.Main industrial applications of the MIT imaging are in high conductive flow imaging.However,recently it has been shown that the MIT may be useful for low conductive process imaging.This paper presents a cost effective hardware design for MIT in industrial applications,called Bath-MKI industrial MIT system.The system comprises 8 inductor coils and has the possibility of expansion to 16 coils.The excitation signals and the measured voltages are generated and measured using a LabView based system.Two 16 by 1 multiplexers are used to select between the coils.Measurements,excitation and multiplexing are all controlled by a National Instrument(NI) USB based DAQ:USB-6259 and a signal generator.Using the same electronics,the prototype is tested with two different coil arrays;one is a small scale ferrite core coil and one larger scale air cored coil.Experimental image reconstruction results are shown using both small scale and large scale coil arrays. 展开更多
关键词 magnetic Induction tomography coil sensors tbrward problem inyerse solver
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Cyprus, the European Union and the Recent Crisis: Inspiration for New Processes of Convergence or Incentive for Regional Disparities?
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作者 Simona Epasto 《Sociology Study》 2013年第12期909-919,共11页
In the EU (European Union), Cyprus's problems aren't new. Ten years later, the same debate is being held all over again, just from a different point of view. It is emblematic of this current financial crisis becau... In the EU (European Union), Cyprus's problems aren't new. Ten years later, the same debate is being held all over again, just from a different point of view. It is emblematic of this current financial crisis because the banking system is much bigger than GDP (Gross Domestic Product). Setting aside the sluggish economic performance, as well as the usual gap between northern and southern regions, people are uncomfortable with the EU. Getting the EU to finance a deficit is very tempting because it seems to be a politically and socially painless option, but can we count on the EU to devise such a smoothly running system? Cyprus is interesting on many levels, from the debate concerning the limits of cohesion policy to the need of finding new solutions for the European periphery. It raises the question of whether a real fiscal and political union is possible, in light of the actual geoeconomic and geopolitical dynamics among the EU, Turkey, and Russia. The aim of this paper is to explore the possible mechanisms for an integration of Cyprus in order to go beyond fiscal burden sharing. It is an important starting point to paving the way to new policies and strategies for changing the objectives of economic convergence. 展开更多
关键词 Cyprus fiscal crisis European Union cohesion policy CONVERGENCE
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Positive Psychology in Staff Motivation
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作者 Yuanxiao Zhang 《International English Education Research》 2014年第5期1-3,共3页
Nowadays, China under the background of economic transition, the process of urbanization and industrialization is speeding up, people's living and working under increasing pressure. Meanwhile, due to various reasons,... Nowadays, China under the background of economic transition, the process of urbanization and industrialization is speeding up, people's living and working under increasing pressure. Meanwhile, due to various reasons, our enterprises have not yet fully out of the shadow of the economic crisis, the development of small and medium enterprises are facing various bottlenecks. In this study, incentive theory put forward a more systematic incentive policy from the perspective of positive psychology. On personal level, training employee's positive personality, inspiring their self-efficacy, providing multi-faceted training, all this can contribute to positive psychological capital. At the organizational level, by building a positive organizational culture and creating an organizational relationship full of love to contribute to good incentive effect. 展开更多
关键词 Positive Psychology ENTERPRISES Incentive mechanism.
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The Incentive Mechanism Research of Knowledge Workers
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作者 YanhuiZhang 《International Journal of Technology Management》 2013年第7期87-89,共3页
"Knowledge workers" is the carrier of enterprise knowledge and technology and is undoubtedly the most important resource and core competence. How to effectively motivate such people create greater wealth for the ent... "Knowledge workers" is the carrier of enterprise knowledge and technology and is undoubtedly the most important resource and core competence. How to effectively motivate such people create greater wealth for the enterprise has become the key problem of the era of knowledge economy. Based on the concept and characteristics of knowledge workers, this paper uses classical analysis framework of incentive theory; through quantitative and qualitative analysis, it points out the existing problems and puts forward solutions on the basis of full analysis of the present incentive situation. 展开更多
关键词 Knowledge workers incentive theory incentive mechanism
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Simulation Games As Educational Learning Method in Engineering Careers
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作者 Leonardo Adan Douglas Costucica 《Journal of Mechanics Engineering and Automation》 2015年第4期251-256,共6页
The challenges of today's world require college students have different skills and know how to apply the knowledge acquired to solve new situations. The traditional mode of teaching with lectures, still present in ma... The challenges of today's world require college students have different skills and know how to apply the knowledge acquired to solve new situations. The traditional mode of teaching with lectures, still present in many subjects of the engineering, seems to favor the development of the necessary skills, as active use of knowledge required [ 1 ]. However, they are using simulation games as an educational method in many universities in the world for the advantages they present for learning and the development of various skills, to simulate specific situations of professional activity [2]. This paper presents some background and requirements that games must meet educational purposes and propose their use in subjects related to economics, management and organization of production engineering programs where you can teach and learn from building products with simple items like cardboard paper on the theory of constructionism to build a product where people are building theories and knowledge in the mind [3]. The use of games is not widespread in universities in Argentina, however you can generate more motivating learning situations as it leaves the board becoming less abstract and more concrete learning. Classroom climate changes as students take a more participatory role and the teacher intervenes as a guide or facilitator of learning. This work could motivate teachers and researchers to promote their use in teaching and in future research to evaluate the potential of its use as a learning tool. 展开更多
关键词 SIMULATION GAME TEACHING LEARNING educational method.
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Economic Factors in the Use of Renewable Energy Sources in Kazakhstan
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作者 Gaukhar Seitkhamzina 《Journal of Agricultural Science and Technology(B)》 2015年第2期129-134,共6页
The purpose of this research was to study economic incentives to use renewable energy sources in the Republic of Kazakhstan and to give suggestions for production and circulation of the "green" certificates as a new... The purpose of this research was to study economic incentives to use renewable energy sources in the Republic of Kazakhstan and to give suggestions for production and circulation of the "green" certificates as a new financial instrument. The author analyzed European Union and Kazakhstani experience of economic incentives to reduce emissions and introduction of renewable energy sources. As a result of conducted research, the proposal to produce and circulate new financial instruments in Kazakhstan is made; as well as economic and environmental factors of renewable energy sources in the Republic of Kazakhstan are defined. 展开更多
关键词 Renewable energy sources financial instruments "green" certificates "green" economy.
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Motivation Factors: Impact on Sales Commission Plan Employees in a Telecommunication Company in Malaysia
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作者 Zainal Abu Zarim Hafizah Omar Zaki Nur Liyana Mohd Maridz 《Management Studies》 2016年第4期139-148,共10页
The purpose of this study is to uncover factors of motivation among account executives in a telecommunication company after the improvement of sales commission plan program in year 2014. Factors of motivation, such as... The purpose of this study is to uncover factors of motivation among account executives in a telecommunication company after the improvement of sales commission plan program in year 2014. Factors of motivation, such as monetary reward, recognition, affiliation, job security, and work environment that influence account executives motivation have been highlighted. Quantitative method was used in this study with the help of questionnaire data collection. The questionnaires were distributed among one of the telecommunication company account executives. The study found that there are significant differences in motivation level between gender, age, year of service, salary, and workplace of account executives. Monetary reward, job security, and work environment were found as the significant drivers to motivate account executives. The study also found that improvement on public recognition and affiliation factors failed to bring positive impact towards account executives motivation. Consistently, the findings can conclude that there is a relationship between account executives and sales commission plan that can lead to increase in motivation. Despite the positive result, the study can suggest the company to improve its bottom-line where sales commission plan program needs further revision in accordance with account executives factors of motivation. 展开更多
关键词 motivation factors sales commission plan account executives telecommunication company
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Application of dual structure theory on motivating safe behavior of coal mine staff
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《Journal of Coal Science & Engineering(China)》 2012年第1期73-79,共7页
Based on behavior science and direct causes analysis of serious accidents in Chinese coal mines in recent 5 years, a conclusion that unsafe behaviors of coal mine staff were the direct causes of these serious accident... Based on behavior science and direct causes analysis of serious accidents in Chinese coal mines in recent 5 years, a conclusion that unsafe behaviors of coal mine staff were the direct causes of these serious accidents was drawn, accounting for 91.3%. If staff was divided into executor and manager, percentages of the executor's and manager's unsafe behaviors in direct causes of the accidents were 69% and 54%, respectively, with executor's unsafe behavior as direct causes and manager's unsafe behavior as essential reasons after thorough analysis of these accidents. Further, on the basis of dual structure theory analysis, three new understandings, including transformation, hierarchy classification and representativeness of behavior factors were il- lustrated. Behavior factors of executors and managers in Chinese coal mines were summarized and classified by new recogni- tion. Then, dual structure theory was applied in a coal mine in Hebei Province of China; weakening unsafe behaviors and strengthening safe factors can attain the purpose of motivating safer behaviors in the coal mine. 展开更多
关键词 dual structure theory unsafe behavior new understandings application study
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Research on the Enterprise Management and Employee Incentive Mechanism under the Environment of Enterprise Social Networks
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作者 Wang Xia 《International Journal of Technology Management》 2015年第10期73-75,共3页
In this paper, we conduct research on the enterprise management and the related employee incentive mechanism under the environment of enterprise social networks. As the sharp change in the environment, the enterprise ... In this paper, we conduct research on the enterprise management and the related employee incentive mechanism under the environment of enterprise social networks. As the sharp change in the environment, the enterprise how to win the competitive advantage for a long time which caused many strategic management thinking, to promote the new development of the theory of the strategic management. Our designed mechanism will enhance the management activities and promote the general value of the employees which has significant meanings. 展开更多
关键词 Enterprise Management Employee Incentive Enterprise Social Networks.
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Main Content and Enlightenment of Western state retirement system
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作者 Shi Shuangyan 《International English Education Research》 2015年第6期98-100,共3页
The retirement age policy adjustment is again sharing the cost of the aging process, incentives to delay retirement life expectancy means that workers work longer. Developed by the elastic mechanism into retirement sy... The retirement age policy adjustment is again sharing the cost of the aging process, incentives to delay retirement life expectancy means that workers work longer. Developed by the elastic mechanism into retirement system framework, improve the flexibility of the retirement system, in curbing early retirement incentives to delay retirement, improve the elderly labor force participation rate, and achieved some success. The reform of the retirement system gradually into public view. To adapt to China's national conditions for the establishment of flexible retirement mechanism, western countries need to discuss flexible retirement system, in-depth analysis of the establishment of the special constraints flexible retirement mechanism, good theoretical advance preparation for retirement Mechanism. 展开更多
关键词 retirement age retirement pension international comparison
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Comprehension of functional support by enculturated chimpanzees Pan troglodytes
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作者 Anna M. YOCOM Sarah T. BOYSEN 《Current Zoology》 SCIE CAS CSCD 北大核心 2011年第4期429-440,共12页
Studies of causal understanding of tool relationships in captive chimpanzees have yielded disparate findings, particularly those reported by Povinelli & colleagues (2000) for tool tasks by laboratory chimpanzees. T... Studies of causal understanding of tool relationships in captive chimpanzees have yielded disparate findings, particularly those reported by Povinelli & colleagues (2000) for tool tasks by laboratory chimpanzees. The present set of experiments tested nine enculturated chimpanzees on three versions of a support task, as described by Povinelli (2000), during which food re- wards were presented in different experimental configurations. In Experiment 1, stimulus pairs included a choice between a cloth with a reward on the upper right comer or with a second reward off the cloth, adjacent to a comer, with the second pair comprised of a cloth with food on the upper right comer, and a second cloth with the reward on the substrate, partially covered. All subjects were successful with both test conditions in Experiment 1. In a second study, the experimental choices included one of two possi- ble correct options, paired with one of three incorrect options, with the three incorrect choices all involving varying degrees of perceptual containment. All nine chimpanzees scored significantly above chance across all six conditions. In Experiment 3, four unique conditions were presented, combining one of two possible correct choices with one of two incorrect choices. Six of the subjects scored significantly above chance across the four conditions, and group performance on individual conditions was also significant. Superior performance was demonstrated by female subjects in Experiment 3, similar to sex differences in tool use previously reported for wild chimpanzees and some tool tasks in captive chimpanzees. The present results for Experiments 2 & 3 were significantly differed from those reported by Povinelli et al. (2000) for laboratory-born, peer-reared chimpanzees. One contribution towards the dramatic differences between the two study populations may be the significant rearing and housing differences of the chimpanzee groups. One explanation is that under conditions of enculturation, rich social interactions with humans and conspecifics, as well as active exploration of artifacts, materials, and other aspects of their physical environment had a significant impact on the animals' ability to recognize the support relationships among the stimulus choices. Overall, the present findings provide strong support for the hypothesis that our chimpanzee subjects based their responses on an understanding of functional support which represented one facet of their folk physics repertoire [Current Zoology 57 (4): 429-440, 2011]. 展开更多
关键词 CHIMPANZEES Comparative cognition Tool use CAUSALITY
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