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浅谈高校图书馆员的职业倦怠及心理调适 总被引：5，自引：0，他引：5
介绍了职业倦怠的概念，从高校图书馆员的职业特点出发，探索其职业倦怠的表现形式和成因。提出了一些心理调适的方法。 相似文献
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Guang-ming Chen Li-xia Liang Li-ming Tang Xiao-xiao Xu Zhi-jiang Zhu Qi Chen 《浙江大学学报(A卷英文版)》2009,10(11):1678-1682
An adjustable ejector expansion device for a CO2 heat pump water heater （HPWP） is proposed to improve the system performance. It has been designed to investigate experimentally the effects of the motive nozzle throat area of the ejector, entrained flow pressure, back pressure and primary flow pressure on the entrainment ratio. Experiments based on different motive nozzle throat areas were conducted and the results of the prototype ejector using CO2 as working fluid are presented. The results show that an adjustable ejector can achieve high performance and work well in a wide range of working conditions. 相似文献
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随着社会的发展,电子产品在人们的日常生活中得到越来越广泛的应用,并向以体积小、重量轻、效率高、稳定性强等为优点方向发展。电源技术尤其是数控电源技术是一门实践性很强的工程技术,服务于各行各业。本文介绍可调遥控电源开关的设计,该设计采用红外遥控系统,由红外遥控发射电路发射红外信号,通过红外遥控接收电路接收信号并进行解调,控制电源电路输出所需电压。 相似文献
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陆川的《南京!南京!》以艺术的辩证法则、非意识形态对抗、非民族主义的立场、文化批判的精神、"复调"的叙事、还原历史真实和人性真实的勇气、"差异书写"和对比的手法塑造了战争中的"他者"——抗日战争中的日本人角川,成为中国电影史上继姜文的《鬼子来了》、冯小刚《集结号》后的又一部特立独行的中国战争影片,是一次在"包容他者"的人文理想和艺术原则基础上的对电影美学疆界的新跨越。 相似文献
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XIE Chun-lai CHEUNG Chun-ho LIU Wei-zhong 《浙江大学学报(A卷英文版)》2007,8(8):1304-1310
In this paper,we propose a novel adjustable multiple cross-hexagonal search(AMCHS) algorithm for fast block motion estimation. It employs adjustable multiple cross search patterns(AMCSP) in the first step and then uses half-way-skip and half-way-stop technique to determine whether to employ two hexagonal search patterns(HSPs) subsequently. The AMCSP can be used to find small motion vectors efficiently while the HSPs can be used to find large ones accurately to ensure prediction quality. Simulation results showed that our proposed AMCHS achieves faster search speed,and provides better distortion performance than other popular fast search algorithms,such as CDS and CDHS. 相似文献
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目前,绝大多数开关电源的共性通常是具有恒压输出功能,也就是人们常说的稳压电源．然而,对一些大功率的设备,不但要求有稳定的输出电压,还要求有稳定的输出电流．同时这个稳定的输出电流值还要求能预先设定．这一种可以预设定输出电流的开关电源,在现有开关电源的基础上增加了单片机闭环控制系统,使得它可以应用在一些既需要稳定的输出电压,又需要稳定的输出电流的系统上．解决目前大部分开关电源因负载变化,造成开关电源停止工作,影响用电设备正常工作的问题． 相似文献
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Ibrahim Develi 《Journal of The Franklin Institute》2005,342(1):69-84
This paper considers the problem of detecting the optimal spreading codes (OSC) in a given code set for a direct sequence-code division multiple access system that employs despreading sequences weighted by adjustable chip waveforms. Due to computational complexity required to detect the OSC in a code set, a simple and efficient strategy is introduced. Analysis and numerical results show that the proposed strategy can successfully distinguish the spreading codes being most suitable references for a given code set in which the candidate spreading codes have equal crosscorrelation properties. 相似文献
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