电流变液阻尼器密封装置的设计     

王安民  朱冠华 《茂名学院学报》2006,16(1):7-11

电流变液阻尼器的密封是阻尼器设计中的关键技术,该文利用在流体机械中的应用较多的螺旋密封,并对其作用原理和设计方法进行研究和论证;通过Matlab优化工具箱软件进行参数的最优化,从而得到一种对各种参数均进行优化的完整方案。  相似文献   

高职院校《绿色餐饮管理》课程优化设计研究     

郑晓洁  蔡宗平 《教育教学论坛》2020,(12):382-383

文章以高职院校《绿色餐饮管理》课程教学为例,分析传统教学中存在的问题,结合协同创新背景下现代餐饮业的发展趋势与人才培养要求,对课程优化设计提出建议,改善课程教学效果,为餐饮业培养更多优秀的储备人才。  相似文献   

新型铁道集装箱运输车车体分析及优化     

王剑  刘敬辉 《邢台职业技术学院学报》2004,21(1):1-5

新型铁道双层集装箱运输车是新研制的货车车型，新车型的设计与制造需要更多的科学依据。本文应用JIFEx软件对车体结构进行了多种工况的有限元分析和重量、刚度、应力、自振频率等多种务件的优化设计，为更加合理、经济的车体结构设计提供科学依据。  相似文献   

浙江"特色产业"论     

张德存 《湖州师范学院学报》2002,24(5):60-66

特色经济的核心是特色产业。浙江的特色产业有着独特的发展思路和发展模式；它推动了浙江经济发展、富裕了浙江人民、使浙江快速完成了资本积累；它发挥了浙江优势、调整优化了浙江农村产业、产品结构，以鲜明的特色开辟了浙江独特的市场空间，避免产业趋同和不合理的重复建设；最终形成了与特色产业相配套的龙头企业和专业市场，带动周围地区加工生产进一步发展，提高了浙江农业工业化、集约化程度。这是浙江成为全国经济明星的成本。  相似文献   

一种求解非线性方程组的混沌优化算法     

钱树华 《邢台职业技术学院学报》2006,23(1):70-72

本文针对非线性方程组的求解问题提出一种混合算法,将方程组转换成一个优化问题。利用优化问题的非线性共轭梯度法与混沌优化方法相结合,提出了一种新的混合优化算法。该算法能使非线性共轭梯度法跳出局部最优,最终获得全局最优。算法的收敛性也进行了证明,数值结果表明该算法是有效的。  相似文献   

基于数值信息法的煤巷支护综合设计研究     

秦韵  曲黎薇  李诚 《北京工业职业技术学院学报》2008,7(1):19-23

针对山西大同某煤矿辅助巷道支护结构的锚杆与锚索的设计,采用理论设计、数值模拟、观测设计、工程类比几种方法的综合设计进行方案选择、设计优化。此方案不仅在经济方面,而且在技术、安全方面都满足要求,对类似的工程起到借鉴的作用。  相似文献   

Study on the submerged fermentation (SMF) of termitomyces eurrhizus     

张铭  郑晓冬  陈新爱  尹源明 《浙江大学学报(A卷英文版)》2002,3(3)

The influence of KH\-2PO\-4, peptone and brown sugar on Termitomyces fuliginosu's mycelium formation was studied with the application of the design of quadratic rotation general combination based on determining the growth curve. A quadratic regression model of biomass to the doses of the above three factors was established. The model fit well and therefore the optimum fermentation condition was obtained. Responses of biomass to the three single factors and to their interactions were discussed. Thus, the highest level of biomass, 21.1 g/L, appeared under the optimized conditions when the initial KH\-2PO\-4, peptone and brown sugar were 1 g/L, 4 g/L and 72 g/L respectively.  相似文献   

多媒体技术在教学中的作用   总被引：1，自引：0，他引：1  

么家欣 《天津职业院校联合学报》2005,7(6):64-66

教师应充分认识多媒体技术的优势并积极运用,以提高教学效率;通过研究多媒体技术与教学要素之间的关系,要求教师科学而有效地应用多媒体技术,以实现教育教学目标的最优化。  相似文献   

免疫算法与遗传算法的比较     

周芳  邓乐斌 《郧阳师范高等专科学校学报》2004,24(3):8-10

免疫算法与遗传算法二者有不同点，通过仿真实验表明它们之间在功能和应用方面有区别．  相似文献   

Modeling the influences of upper-elementary school students’ digital reading literacy,socioeconomic factors,and self-regulated learning strategies     

Shin-Feng Chen 《Research in Science & Technological Education》2017,35(3):330-348

Background: Reading is an interactive and constructive process of making meaning by engaging a variety of materials and sources and by participating in reading communities at school or in daily life.

Aim: The purpose of this study was to explore the factors affecting digital reading literacy among upper-elementary school students.

Method: A 3-stage stratified cluster sampling was implemented that resulted in a sample of 592 upper-elementary students from 29 classes in 7 schools. Self-Regulated Learning Strategies Assessment (S-RLSA), Digital Reading Literacy Assessment (DRLA), and student reports of their parents’ education backgrounds were used to collect data on the outcome and predictor variables. Interpretation of these data involved two highly regarded statistical techniques. First, structural equation modeling was used to explore relationships amongst the constructs. Second, multi-group invariance (MI) analyses were used to assess the influence of parental education and self-regulated learning strategies on students’ digital reading literacy.

Results: Enriching students’ family learning resources and strengthening their self-regulated learning abilities could have very important influences on promoting upper-elementary school students' digital reading literacy -webpage information retrieval, reading and communication abilities.

Conclusions: This study also provides information on how teachers can address student resources to improve digital reading literacy and self-regulated strategies.  相似文献