电流变液阻尼器密封装置的设计

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。     

高职院校《绿色餐饮管理》课程优化设计研究

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。     

上市公司会计造假问题的深层分析

上市公司的会计造假固然有其自身利益的驱动，但也和我国目前与证券市场有关的监管制度不健全，监督体系不完善以及证券市场上的其他参与包括证券公司，会计师事所等中介机构的不规范运作有很大的关系。要解决上市公司的会计造假问题，应在完善上市公司法人治理结构的基础上，通过健全与证券市场有关的监管制度，监管体系和监管手段，强化对上市公司会计造假行为的外部约束。     

新型铁道集装箱运输车车体分析及优化

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。     

中国职业教育兴衰的制度主义分析--"市场化"制度变迁的考察

职业教育是整个教育体系中最容易与市场机制相联系的教育种类，但中国的职业教育却在市场化的道路上经历了先盛后衰的过程。本文作者力图用新制度主义的分析视角对我国职业教育自20世纪70年代末以来的“市场化”的制度变迁过程予以考察。     

一种求解非线性方程组的混沌优化算法

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。     

基于数值信息法的煤巷支护综合设计研究

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。     

Study on the submerged fermentation (SMF) of termitomyces eurrhizus

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.     

多媒体技术在教学中的作用

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。     

Comparing Student Performance and Growth in 2- and 4-Year Institutions

This study examines the organizational characteristics of 51 higher education institutions in relationship to student performance and growth. The study first finds that organizational measures of mission, size, wealth, complexity, and selectivity are statistically represented by the 2-year versus 4-year college mission. Findings indicate that 2-year and 4-year campuses indeed do exert significantly different influences on undergraduate GPA and self-reported intellectual growth. Next, the study uses both OLS regression and HLM to examine these influences. High school percentile rank and college classroom experiences are better predictors of Cum GPA at 4-year institutions, while student effort is a better predictor of GPA at 2-year institutions. Whereas the most important predictors of Cum GPA include precollege measures such as high school percentile rank and SAT score, the most influential predictors of student intellectual growth are campus experiences including classroom vitality, peer support, student effort, commitment, and involvement. Controlling for all other variables, students at 2-year institutions receive higher grades, and students at 4-year campuses experience more growth.