关于高等学校仪器设备经济管理问题的思考

高等学校实验室使用的仪器设备是教学实验和科学研究工作中不可缺少的物质基础,是各类实验室的主要技术装备。仪器设备经济管理就是对仪器设备投资效益的考核,以及采取有效的经济考核管理措施。     

种群多样度的改进

对几种常见多样度的提法做了比较,提出了种群多样度的另一种定义,在很大程度上改善了以往多样度定义的缺陷,为种群多样性的判断提供了有力的依据.     

突出工程设计能力培养 增强学生社会适应性

结合学校机械专业特色,突出学生工程设计能力的培养,精心构建机械专业工程设计能力培养体系,强化实践教学环节,重点完善实践教学环境、提高实习教学效果、改善课程设计与毕业设计教学质量,全面提升学生的工程设计能力,增强学生的社会适应性。     

粒度组成对KR搅拌头用浇注料性能的影响

以Andreassen颗粒紧密堆积理论为基础,研究KR搅拌头外衬莫来石浇注料临界粒度和粒度组成对其密度、强度和热震稳定性的影响.结果表明,随着临界粒度的增大,浇注料干燥和烧结后冷态密度与强度均明显提高;临界粒度一定时,粒度组成对浇注料冷态密度、强度以及热震稳定性的影响基本一致,但临界粒度不同的浇注料试样达到最佳性能所对应的粒度组成并不完全相同;与冷态性能相比,浇注料热震稳定性受临界粒度的影响较小.     

日新韩高校思想政治教育的比较及对我国的启示

日新韩三国与中国具有相似文化背景和历史传统,思想政治教育的目标、内容和实施的途径也具有可比性.日新韩三国高校思想政治教育都具有阶级性和政治性,都重视爱国主义精神与民族精神的培养,将儒家传统思想与本国实践相结合,注重隐形教育,强调知行合一.这对新形势下推动我国高校思想政治教育发展有重要的借鉴意义.     

西归中阿魏酸和佛手柑内酯提取工艺研究

目的:优选西归中阿魏酸和佛手柑内酯的提取工艺。方法:采用超声提取,分别通过单因素试验和L(934)正交试验,研究了提取次数、提取时间、提取温度和固液比四个因素对阿魏酸和佛手柑内酯含量的影响。结果:最佳提取工艺为A3B2C1D2,即提取次数为3次,提取时间为50 min,提取温度为55℃,固液比为1∶5。结论:该工艺简便、可靠,可为西归的进一步开发利用提供参考。     

An Efficient Multidimensional Fusion Algorithm for IoT Data Based on Partitioning

The Internet of Things (IoT) implies a worldwide network of interconnected objects uniquely addressable, via standard communication protocols. The prevalence of IoT is bound to generate large amounts of multisource, heterogeneous, dynamic, and sparse data. However, IoT offers inconsequential practical benefits without the ability to integrate, fuse, and glean useful information from such massive amounts of data. Accordingly, preparing us for the imminent invasion of things, a tool called data fusion can be used to manipulate and manage such data in order to improve process efficiency and provide advanced intelligence. In order to determine an acceptable quality of intelligence, diverse and voluminous data have to be combined and fused. Therefore, it is imperative to improve the computational efficiency for fusing and mining multidimensional data. In this paper, we propose an efficient multidimensional fusion algorithm for IoT data based on partitioning. The basic concept involves the partitioning of dimensions (attributes), i.e., a big data set with higher dimensions can be transformed into certain number of relatively smaller data subsets that can be easily processed. Then, based on the partitioning of dimensions, the discernible matrixes of all data subsets in rough set theory are computed to obtain their core attribute sets. Furthermore, a global core attribute set can be determined. Finally, the attribute reduction and rule extraction methods are used to obtain the fusion results. By means of proving a few theorems and simulation, the correctness and effectiveness of this algorithm is illustrated.     

Simultaneous mineralization of CO2 and recovery of soluble potassium using earth-abundant potassium feldspar

CO2 capture and storage(CCS) is an important strategy in combatting anthropogenic climate change.However,commercial application of the CCS technique is currently hampered by its high energy expenditure and costs.To overcome this issue,CO2 capture and utilization(CCU) is a promising CO2 disposal method.We,for the first time,developed a promising method to mineralize CO2 using earth-abundant potassium feldspar in order to effectively reduce CO2 emissions.Our experiments demonstrate that,after adding calcium chloride hexahydrate as an additive,the K-feldspar can be transformed to Ca-silicates at 800 C,which can easily mineralize CO2 to form stable calcium carbonate and recover soluble potassium.The conversion of this process reached 84.7%.With further study,the pretreatment temperature can be reduced to 250 C using hydrothermal method by adding the solution of triethanolamine(TEA).The highest conversion can be reached 40.1%.The process of simultaneous mineralization of CO2 and recovery of soluble potassium can be easily implemented in practice and may provide an economically feasible way to tackle global anthropogenic climate change.     

库普河大桥T梁预制的质量控制和外观缺陷处理探讨

文章针对库普河大桥预制T梁的质量控制、外观缺陷处理，分析过程并提出处理方法和预防措施，以期达到使T梁的质量得到保证。     

一类线性微分方程解的增长性

研究二阶微分方程f〃+e-znf'+(A1ep(z)+A2eQ(z))f=0解的增长性,运用值分布和复域微分方程理论,得到上述方程的解的增长性的精确估计,推广并完善了文献[10]的结果.