“易班”网络社区建设推广过程中的问题及对策研究

"易班"网络社区的推出为大学生提供了属于自己的集知识学习、师生交流、同学交往、生活娱乐等内容为一体的网络社交平台,"易班"网络社区的建立、使用和推广,符合广大青年学生的特点,有效地拓展丰富了学生社会实践的空间和舞台,同时也给高校思想政治教育提供了新途径。然而在推广和发展过程中也出现了一些新的问题,如何解决这些问题,从而能更好地发挥"易班"作为开展思想政治教育和学生管理工作平台的作用,更好地实现德育教育的功能,本文进行了研究探讨。     

试论高职院校教务管理的信息数字化建设

随着高职院校的不断发展,教育管理成为业内比较关注的课题。如何实现高职院校教务管理信息的数字化建设,以尽快适应高职院校快速发展、有效推进教育教学深化改革,成为高职教育工作者当前和今后一个时期的重要任务。教务管理数字化是一项复杂的系统工程,需要采用系统集成的先进软硬件技术,同时要体现高职院校管理的经验和特色。笔者结合自身工作实践,在本文中探讨了高职院校教育管理信息数字化的意义,分析了高职院校教育管理信息数字化的推进措施,供业内同行借鉴参考。     

《印度之行》中的生态问题之三维透视——生态整体主义的构建

本文着重探讨《印度之行》中的生态问题,通过文学生态批评、经济生态成本和生态法学之三维来考察当代世界自然环境、社会关系和文化精神的生态失衡,以期实现人与自然的合一、人与人之间的联结、人肉体与精神相统一的生态整体主义的构想。     

中学生学习心理素质教育浅论

学习心理素质培养既是素质教育的重要内容,又是提高学生综合素质的必要条件。本文在探讨中学生学习心理素质问题的基础上,制定了行之有效的学习心理素质培养策略。     

MSAEM Estimation for Confirmatory Multidimensional Four-Parameter Normal Ogive Models

In this paper, we develop a mixed stochastic approximation expectation-maximization (MSAEM) algorithm coupled with a Gibbs sampler to compute the marginalized maximum a posteriori estimate (MMAPE) of a confirmatory multidimensional four-parameter normal ogive (M4PNO) model. The proposed MSAEM algorithm not only has the computational advantages of the stochastic approximation expectation-maximization (SAEM) algorithm for multidimensional data, but it also alleviates the potential instability caused by label-switching, and then improved the estimation accuracy. Simulation studies are conducted to illustrate the good performance of the proposed MSAEM method, where MSAEM consistently performs better than SAEM and some other existing methods in multidimensional item response theory. Moreover, the proposed method is applied to a real data set from the 2018 Programme for International Student Assessment (PISA) to demonstrate the usefulness of the 4PNO model as well as MSAEM in practice.     

中医院校药理学大班案例教学法的探索

目的本文探索了中医院校药理学大班案例教学法。方法将案例引入课堂教学,将小组讨论放在课后,加大课后作业和集中辅导。结果该法可以使理论教学生动有趣。课后讨论有利于培养学生主动学习的能力。结论大班案例教学法是药理学教学中值得推广并且行之有效的教学方法。     

高等数学口诀及在教学中的应用

为了提高高等数学教学质量,调动学生的学习积极性,增加学生学习的乐趣,编制了12首高等数学口诀,在教学中加以应用,收到了很好的效果。     

Accelerated ovarian aging in mice by treatment of busulfan and cyclophosphamide

Busulfan/cyclophosphamide (Bu/Cy) conditioning regimen has been widely used to treat cancer patients, while their effects on major internal organs in females are not fully understood. We treated female mice with Bu/Cy, and examined the histopathology of major internal organs on Day 30 after the treatment. The results show that Bu/Cy treatment affected the ovaries most extensively, while it had less effect on the spleen, lungs, and kidneys, and no effect on the heart, liver, stomach, and pancreas. To better understand the effect of Bu/Cy on the ovaries, we counted follicles, and determined the levels of ovarian steroids. The Bu/Cy-treated mice showed a reduction of primordial and primary follicles (P<0.01) on Day 30 and a marked loss of follicles at all developmental stages (P<0.01) on Day 60. Plasma levels of estradiol and progesterone in Bu/Cy-treated mice decreased by 43.9% and 61.4%, respectively. Thus, there was a gradual process of follicle loss and low estradiol in Bu/Cy-treated mice; this is a profile similar to what is found in women with premature ovarian failure (POF). The Bu/Cy-treated mice may serve as a useful animal model to study the dynamics of follicle loss in women undergoing POF.     

β-receptor blocker influences return of spontaneous circulation and chemical examination in rats during cardiopulmonary resuscitation

Objective

We investigated the influence of β-receptor blocker metoprolol on return of spontaneous circulation (ROSC) during cardiopulmonary resuscitation (CPR) in rats with induced myocardial infarction (MI).

Methods

Male Sprague-Dawley rats were randomly divided into three groups: the sham-operated group, the MI group without metoprolol, which was fed the vehicle, and the MI+metoprolol group receiving intragastric metoprolol. Each group was further divided randomly into three subgroups, depending on the dosage of epinephrine administered during subsequent CPR applied after the induction of asphyxial cardiac arrest.

Results

The ROSC rate was significantly decreased in the low dose subgroup of MI group, unchanged in the medium dose subgroup of MI group, and significantly decreased in the high dose subgroup of MI group, compared with the same dose subgroup of sham-operated group. MI+metoprolol group had a lower ROSC rate than MI group in the medium dose subgroup, and a higher ROSC rate than MI group in the high dose subgroup. There was no difference in blood K⁺ values of successful rats between MI group and MI+metoprolol group. The rats with successful CPR had lower blood K⁺ values than rats with unsuccessful CPR in each of the three treatment groups.

Conclusions

Metoprolol administered to MI rats over a long period significantly improved ROSC rates under an appropriate dose of epinephrine during CPR. An increasing high blood K⁺ value would attenuate the rate of a successful CPR.     

浅析肖邦降b小调第二谐谑曲演奏技法

肖邦的谐谑曲具有独特的艺术风格。文章通过对肖邦降b小调第二谐谑曲作品的乐谱内容、结构、演奏技法以及作品的三个阶段呈示部、展开部、再现部等的探析研究,旨在对作品的创作技巧有一个清晰的理解和认识,同时希望能为更好地掌握肖邦第二谐谑曲的弹奏技巧提供一些可资源借鉴的经验。