成败等因素对小学生游戏中自我价值感的影响

本研究以三、四年级的142名小学生为被试,以自编的"背投沙包"游戏为载体,通过创设竞争与合作的四类小组以及控制成功与失败的结果,探讨其对个体自我价值感的影响。研究发现,个体的自我价值感受到个体成败而非群体成败的影响,其中人际关系起着部分中介作用。尤其是在失败的结果产生后,极端的高能力重视水平能够带来高自我价值感。而竞争与合作的小组安排对自我价值感的影响并不显著。     

干细胞移植治疗冠心病的现状与未来

冠心病仍然是全球的主要死亡原因.其所造成的心肌梗死及慢性心力衰竭对生活质量的影响和由此造成的高额医疗费用促使我们不断寻求新的医疗措施.近几年有关干细胞用于心肌梗死后心肌再生、心肌内新生血管形成,可能还会改善梗死后的心功能的研究成为心脏病学研究的最热门领域.尽管干细胞治疗有可能使心力衰竭的治疗得到彻底的革命,但仍有部分问题需要澄清.已发表的各个研究结果设计不尽相同,致使对该项治疗的效果较难得出一致的结论.但这些研究都强调干细胞治疗在未来心血管疾病的治疗中可能会发挥较大的作用.干细胞治疗与药学、外科及介入治疗的结合会显著改善冠心病患者的预后.     

肺炎支原体感染与婴幼儿哮喘

呼吸道感染是耍幼儿哮喘发病的重要因素,肺炎支原体(mycoplasma pneumoniae,Mp)与婴幼儿哮喘的关系是近年研究的热点之一.Mp作为社区获得性常见病原体之一在婴幼儿感染率有增高趋势.Mp感染导致婴幼儿哮喘初次和反复发作可能的机制为:Mp感染可直接损伤呼吸道上皮细胞、影响细胞及体液免疫、粘液分泌和呼吸道上皮内神经调节机制紊乱;反复发作与呼吸道对刺激因子呈现高反应性、呼吸道慢性炎症及婴幼儿特应性体质有关.大环内酯类药物具有抗炎和免疫调节作用.用于治疗Mp相关喘息性疾病时取得了一定疗效.     

医师职业精神的外环境建设

通过论述医师职业精神的特征及其与外部环境的关系,分析当前影响医师职业精神构建所需的诸如社会、环境、法律等外部环境因素,并提出相关对策,得出结论为:构建医师职业精神,仅靠医师群体的自律和行业自省,而忽视社会、体制和法律等外部环境对其影响作用和保障作用显然是不够的,需要政府、社会、法律、医院以及医师的共同努力.     

新医改中需要密切注意的若干问题

新医改方案在中国医疗卫生制度和现实的剧烈冲突中,顺应社会与历史发展的需要,应运而生,触发了中国新一轮卫生改革.结合中国实际,从有利于新医改方案能够成功与健康推进,提出与剖析了在推进新医改方案中需要密切注意的若干问题,并建议采取10项积极的预防措施.     

Effects of repetitive stress during the acute phase of Trypanosoma cruzi infection on chronic Chagas' disease in rats

The effect of repetitive stress during acute infection with Trypanosoma cruzi (T. cruzi) on the chronic phase of ensuing Chagas' disease was the focus of this investigation. The aim of this study was to evaluate in Wistar rats the influence of repetitive stress during the acute phase of infection (7 days) with the Y strain of T. cruzi on the chronic phase of the infection (at 180 days). Exposure to ether vapor for 1 min twice a day was used as a stressor. Repetitive stress enhanced the number of circulating parasites and cardiac tissue disorganization, from a moderate to a severe diffuse mononuclear inflammatory process and the presence of amastigote burden in the cardiac fibers. Immunological parameters revealed that repetitive stress triggered a reduced concanavalin A induced splenocyte proliferation in vitro with major effects on the late chronic phase. Serum interleukin-12 concentration decreased in both stressed and infected rats in the early phase of infection although it was higher on 180 days post-infection. These results suggest that repetitive stress can markedly impair the host's immune system and enhance the pathological process during the chronic phase of Chagas' disease.     

Gestion d’une transition et impact sur l’état de santé du personnel

This article is about a case of successful introduction of a technological change in a police department. It presents the links observed between the approach used to manage the transition and the perception that end-users reported regarding their stress, their health condition, and their efficiency at work. End-users of the new system reported a high level of satisfaction towards the method used, with few problems related to their stress, their health condition, and their global efficiency. People who reported such problems also reported more problems integrating the change. Close guidance provided to workers at field level and active support to enhance a fast mastering of the new skills seem to have played a major role.     

工作场所中的反生产行为及其心理机制

反生产行为(Counterproductive Work Behavior, CWB)是员工在工作场所中实施的蓄意伤害组织利益或与组织利益有关的其他成员的行为。本文对反生产行为的概念、分类、理论解释等的最新研究进展进行了系统梳理和全面回顾。在整理和分析已有理论和实证研究成果的基础上, 提出了反生产行为的发生机制模型, 即反生产行为的发生遵循“压力情境→认知加工→负性情绪反应→反生产行为”的逻辑顺序。“认知加工”和“负性情绪反应”是反生产行为发生过程中的两个关键环节, 具体表现为个体在压力情境下的归因过程及负性情绪的生成。在此基础上, 对与反生产行为有关的最新研究成果进行了整合, 并且对当前反生产行为的研究的开展进行了有针对性地评价和展望。     

Hemispheric visual atentional imbalance in patients with traumatic brain injury

We find a spatially asymmetric allocation of attention in patients with traumatic brain injury (TBI) despite the lack of obvious asymmetry in neurological indicators. Identification performance was measured for simple spatial patterns presented briefly to a locus 5 degrees into the left or right hemifield, after precuing attention to the same (ipsilateral) or opposite (cross-hemifield) side. Though the cue was non-predictive of target location overall, performance was significantly slower for cross than for ipsilateral trials in both patients and controls. We tested 21 TBI patients without overt focal brain damage and nine control subjects. Only patients demonstrated significantly worse performance for left side presentation in the ipsilateral condition. Furthermore, in the cross-hemifield condition, the left-right difference seen in TBI patients was significantly larger-reflecting a failure in producing a leftward attention shift. Again no significant difference was found in controls. These hemifield effects suggest an asymmetry in the ability of TBI patients in shifting attention to the left hemifield, whether from central fixation or from a cue in the contra-lateral hemifield. The results support basic hypotheses regarding visual attention: Attentional control may be asymmetric and attention may be a distributed, rather than localized cortical function.