高校经济困难学生社会资助体系探究

随着社会发展与高等教育的普及,国家对高等教育的投入持续增加,各高校逐步建立了国家资助、学校资助和社会资助相辅相成的资助体系,确保物资资助覆盖到全部家庭经济困难学生,帮扶经济困难学生顺利完成学业。近年来,高校社会资助项目增加,社会资助也变得越来越重要,帮助家庭经济困难学生缓解经济压力的同时,拓宽了高校的育人途径,实现了学生、学校和资助方三方共赢。文章结合学生资助工作实际,就目前社会资助存在的的问题进行探讨,并提出了可行性意见与建议。

霍兰德人格特质理论在大学生专业认知教育中的应用研究

目前专业认知教育开展方式主要集中在“知彼”层面,对“知己”层面的探索不多。霍兰德人格特质理论及其应用工具通过对人格特质与专业的匹配,在一定程度上能够有效帮助大学生寻找适合自己的专业(群),是从“知己”层面开展专业认识教育的有效方式。本研究以部分专业大一新生为样本,通过霍兰德职业自我探索量表,生成学生的人格特质代码,然后与大学专业的霍兰德代码进行适配,得出专业适配度,根据适配度数值,对不同学生群体提出了针对性学习建议。从验证结果看,专业适配度与学习成绩成正相关关系、与转专业意愿成负相关关系。

桃红岭杜衡性状变异性及其对珍稀中华虎凤蝶保护的启示

【目的】同一种植物因在不同环境下发生而出现性状变异,研究这种变异能提高对植物响应环境变化的适应机制的理解。桃红岭中华虎凤蝶幼虫专性地以多年生草本植物杜衡叶片为食。该植物在当地呈零散分布,包括高海拔与低海拔两个种群,而该蝴蝶目前仅占据高海拔的少数寄主斑块。研究通过比较当地杜衡种群间的形态性状,揭示植物性状变异性与关联性,阐明性状变异(如来自叶部)对中华虎凤蝶的可能影响,并以此从寄主资源人工干预等角度提出与蝴蝶保护相关的启示。【方法】采用样线法,沿线记录杜衡植株位置、叶片数等信息,现场或带回室内测量每株地上(叶部)、地下(根、根状茎)营养器官与繁殖器官(花、种子)形态指标,用网格法测量叶面积。并通过计算各性状的变异系数(CV)与性状间的Spearman秩相关系数(r),分析性状变异性与关联性。【结果】桃红岭杜衡地上、地下营养器官性状变异均接近高水平(CV≥0.5),而繁殖器官性状则均为弱变异(CV<0.2)。相应地,繁殖器官性状间关联性均很强(r≥0.8),而营养器官性状间关联性则不确定。如蝴蝶非占据区少数性状间显著关联,而占据区则无性状关联(r<0.3),这表明杜衡繁殖器官性状稳定、保守,而营养器官性状则趋向变异,反映出该植物对桃红岭环境变化采取了宽幅适应或生态位策略。发现植物地上部分或繁殖器官性状均与地下部分性状(根状茎长与直径、侧根数等)显著关联,表明地下部分生长会影响到其他部位,相互间存在协变关系。但与非占据区不同,蝴蝶占据区地上部分株高与地下部分性状关联不显著,说明这种协变关系可能因环境压力而变化,反映了该植物生存策略调整与适应能力。在桃红岭,杜衡的低海拔种群较高海拔种群叶面积大,但种群间差异未达显著水平(P>0.05),且其他叶部性状也存在同样情况,表明寄主资源斑块是否被中华虎凤蝶选择、占据,与叶部功能性状变异性无关。【结论】当前蝴蝶未占用的寄主资源斑块具备支撑蝴蝶发生的潜力,建议以人工干预(如蝴蝶个体引入)方式,尝试在未占据斑块建立小种群,这将扩大这种稀有蝴蝶的种群规模,从而缩短恢复时间,减缓未来气候变暖、干旱化的影响。

基于红外相机技术的桃红岭梅花鹿国家级自然保护区 白鹇种群活动节律分析

本文基于红外相机技术对桃红岭梅花鹿国家级自然保护区白鹇种群活动节律进行了分析。结果表明,白鹇的日活动时间集中在5:00—19:00,全年的日活动节律呈现出明显的昼行性,存在2个活动高峰,分别为8:00—9:00和14:00—16:00。白鹇繁殖期与非繁殖期日活动节律的重叠系数为0.68,日活动节律曲线差异极显著(P<0.01)。繁殖期间,白鹇的日活动节律存在2个活动高峰,分别为6:00—7:00和17:00—19:00;非繁殖期间,白鹇的日活动节律也存在2个高峰,分别为7:00—9:00和14:00—16:00。本研究可为保护区内白鹇的保护管理提供参考。

行政审判中高校开除学籍案件的图景分析与现实启示(1999年-2019年)

从审理时间、审理程序、审理结果、开除学籍事由等维度,梳理了1999年至2019年间进入行政审判程序的110个高校开除学籍案件的整体样态,以司法案件为参照,从事实认定、适用法规、处分程序等方面就规范高校开除学籍处分提出相关建议。

数据中心用弯柔型高速传输数据扁线的研制

为满足更加严格的工业和数据密集型应用需求,展开了用于数据中心交换机到服务器间下行链路连接的数据中心用弯柔型高速传输数据扁线研制。该线缆总体上采用2对线对平行排列的扁形(带状)屏蔽平行双导线结构设计,确保线缆具有优良的高频衰减性能和较低的传输延时,提高信号的传输距离和传输速度;采用实心壳层绝缘固定发泡绝缘线对、两侧地线和壳层线对外绕包复合铝箔线对屏蔽以及铝箔总屏蔽的结构设计,确保在反复弯曲插拔使用过程中绝缘线芯和地线不位移,线缆保持优良的传输性能。经检测,该线缆兼具优良的弯曲性能和稳定的高频传输性能。

Effect of acupoint therapy combined with spine pinching in patients with menopausal syndrome: a randomized controlled trial

OBJECTIVE:To assess the efficacy of acupoint therapy combined with spine pinching in patients with menopausal syndrome.METHODS:This is a parallel,randomized,controlled,investigator-blinded trial.A total of 132 participants were randomly assigned to receive either acupoint therapy combined with spine pinching(intervention group)or tibolone therapy alone(control group).The intervention group received acupoint therapy combined with spine pinching three times per week for 4 weeks.The control group received 2.5 mg of tibolone once daily for 4 weeks.The primary outcome was the improved Kupperman score.The WHO quality of life scale was also used.The secondary aim was to identify those who would benefit from acupoint therapy combined with spine pinching based on the levels of follicle stimulating hormone(FSH)and luteinizing hormone(LH).RESULTS:In the intervention group,the improved Kupperman score was significantly decreased after treatment compared with before treatment.However,there were no differences between the intervention and control groups for any outcome.Changes in the physiology score presented negative outcomes in patients with a low FSH level with increasing body mass index(BMI)(P=0.0).In contrast,changes in the physiology score presented positive outcomes in patients with a moderate LH level with increasing BMI(P=0.0).The mean change in the physiology score of patients with a low FSH level and a BMI of≥25.7 kg/m2 was-7.17(range-10.94 to-3.40)after adjustments for age and disease duration.CONCLUSION:Acupoint therapy combined with spine pinching is effective in treating menopausal syndrome,especially in women with a moderate LH level.However,patients with a low FSH level had a negative outcome after acupoint therapy combined with spine pinching.In addition,patients with a BMI of>25.7 kg/m2 had a negative outcome after the intervention,regardless of hormone levels.

The in vitro and in vivo anti-tumor effects of MTX-Fe_3O_4-PLLA-PEG-PLLA microspheres prepared by suspension-enhanced dispersion by supercritical CO_2

The in vitro and in vivo anti-tumor efficacy of methotrexate-loaded Fe3O4-poly-L-lactide-poly(ethylene glycol)-poly-L-lactide magnetic composite microspheres(MTX-Fe3O4-PLLA-PEG-PLLA MCMs,MMCMs),which were produced by co-precipitation(C)and microencapsulation(M)in a supercritical process,was evaluated at various levels:cellular,molecular,and integrated.The results at the cellular level indicate that MMCMs(M)show a better anti-proliferation activity than raw MTX and could induce morphological changes of cells undergoing apoptosis.At the molecular level,MMCMs(M)lead to a significantly higher relative mRNA expression of bax/bcl-2 and caspase-3 than MMCMs(C)at 10μg mL-1(P<0.01);and the pro-caspase-3protein expression measured by Western blot analysis also demonstrates that MMCMs(M)can effectively activate pro-caspase-3.At the integrated level,mice bearing a sarcoma-180 tumor are used;in vivo anti-tumor activity tests reveal that MMCMs(M)with magnetic induction display a much higher tumor suppression rate and lower toxicity than raw MTX.Pharmacokinetic studies show that MMCMs(M)with magnetic induction significantly increase the accumulation of MTX in the tumor tissue compared with the other treatments.These results suggest that the MMCMs(M)prepared by the SpEDS process have great potential to play a positive role in the magnetic targeted therapy field.