高职校内实训基地股份制经营的思考

高职院校校内实训基地的股份制经营中，科学确定股份构成，合理界定各股东的角色和利益定位．是实现多方共赢的保证。校内实训基地的股份构成包括：设备和场地股份，资本股份，智力股份。明确股份构成后，要分步实施对实训基地经营管理的股份制改造，积极选择和引进投资者及各类人才。     

学科中心课程:内涵、理论假设及组织方式

学科中心课程以有组织的学科内容为材料依据,按照学科结构来确定所要学习的内容,注重学科知识体系的完整性。它的形成建立在这样一个假设上:人们通过学习各门学科知识,就能形成关于世界的整体知识。从古至今长期的演变过程中,它存在三种最基本的组织形式,即科目设计、学术性学科设计、综合性学科设计。在新课程背景下,既要消除对学科中心课程的一些误解,又要正视其局限性,对学科中心课程进行改造和完善,不断提升其品质。     

离子液体-石墨烯修饰碳纤维微电极电化学性能研究

本实验制备了离子液体-石墨烯修饰碳纤维微电极,采用循环伏安法和差分脉冲伏安法测定多巴胺(DA)在该修饰电极上的电化学行为。实验结果显示,修饰后电极的稳定性和重现性明显增加,DA在修饰电极上的氧化过程受扩散控制。在5×10-7-1×10-4mol/L浓度范围内,DA在修饰电极上的氧化峰电流与其浓度呈现良好的线性关系。     

Does culture influence how consumers process negative celebrity information? Impact of culture in evaluation of negative celebrity information

This study investigates the relationship between cultural orientation (individualistic or collectivistic culture) and consumers' attribution styles (dispositional and situational attributions) as well as the consequences of attribution styles on brand evaluation and purchase intention. The study also examines how people perceive different types of negative celebrity information (self-oriented and other-oriented negative information) and how their identification with a celebrity endorser affects their response to negative information. The findings suggest that culture influences how consumers – having been exposed to negative celebrity information – make attributions. Dispositional attributions lead to more negative brand evaluation as well as to negative purchase intention. Other-oriented negative information leads to, among Korean consumers, more negative brand evaluation. Finally, the study found that consumers highly identified with a celebrity endorser are less likely to be influenced by negative celebrity information.     

Predicting Parent-Child Differences in Perceptions of How Children Use the Internet for Help With Homework,Identity Development,and Health Information

Bioecological systems theory provides a framework to understand how factors in the child's environment contribute to parent-child differences in estimations of how often children are helped by their Internet use. A national sample survey of 456 matched parent-child pairs investigated how parents-child relational factors, parental attitudes toward the Internet, and the bio-ecology of the child, are related to differing perceptions of the frequency of using the Internet to seek help with homework assignments, to aid in identity development, and to find health information. While previous research shows that parents underestimate risky online behaviors, we investigate whether parent-child differences will emerge in regards to how often the child engages in the behaviors under investigation here. The findings show that parents overestimate these online activities, suggesting they are biased in their estimations. Parent-child relational factors emerged as predictors of parental overestimation for each of these online activities, with trust perceptions as the most consistent predictor. Parental attitudes toward the Internet predicted parent-child differences in perceptions of how frequently the child used the Internet for help with homework and identity development, while the bioecology of the child was only predictive in the case of using the Internet for help with homework.     

科技期刊编辑要把“学习上的缺点”当缺点

从社会、单位、个人3个层次阐述科技期刊编辑要把“学习上的缺点”当缺点的重要意义,从主观、客观2个角度剖析出现不把“学习上的缺点”当缺点这一问题的原因,从激发崇尚学习的内动力、提高重新学习的创新力、增强落实学习制度的执行力3个方面探讨解决该问题的对策,从而提高科技期刊编辑的综合素质.     

Structural design of a double-layered porous hydrogel for effective mass transport

Mass transport in porous materials is universal in nature, and its worth attracts great attention in many engineering applications. Plant leaves, which work as natural hydraulic pumps for water uptake, have evolved to have the morphological structure for fast water transport to compensate large water loss by leaf transpiration. In this study, we tried to deduce the advantageous structural features of plant leaves for practical applications. Inspired by the tissue organization of the hydraulic pathways in plant leaves, analogous double-layered porous models were fabricated using agarose hydrogel. Solute transport through the hydrogel models with different thickness ratios of the two layers was experimentally observed. In addition, numerical simulation and theoretical analysis were carried out with varying porosity and thickness ratio to investigate the effect of structural factors on mass transport ability. A simple parametric study was also conducted to examine unveiled relations between structural factors. As a result, the porosity and thickness ratio of the two layers are found to govern the mass transport ability in double-layered porous materials. The hydrogel models with widely dispersed pores at a fixed porosity, i.e., close to a homogeneously porous structure, are mostly turned out to exhibit fast mass transport. The present results would provide a new framework for fundamental design of various porous structures for effective mass transport.     

Effects of hydraulic pressure on cardiomyoblasts in a microfluidic device

We employed a microfluidic device to study the effects of hydraulic pressure on cardiomyoblast H9c2. The 170 mm Hg pressure increased the cellular area and the expression of atrial natriuretic peptide. With the same device, we demonstrated that the effects of hydraulic pressure on the cardiomyoblast could be reduced by the inhibitor of focal adhesion kinase. This mechanical–chemical antagonism could lead to a potential therapeutic strategy of hypertension-induced cardiac hypertrophy.