人机系统中人的失误机理辩识的可靠性分析方法

本文基于人机系统中人行为形成因子内涵的界定和人的差错元概念的定义,从系统的角度出发,对人的失误机理进行了辩识,依此揭示出人失误的原因与三类认知行为单元的关系,并且分析了人在差错状态下的不同恢复过程及其结构方式;最后,文中对现有的几种典型的人可靠性分析方法进行了评述,指出人机系统中人的失误机理辩识的可靠性分析方法研究的发展方向.     

创业企业家资源禀赋与融资方案认知度关系实证研究

运用列联表分析和Tobit回归法来分析创业企业家的资源禀赋对其认知融资方案的影响程度。通过文献回顾,创业企业家的通用性人力资本、专用性人力资本和社会资本对创业企业家认知融资方案均有正向影响。运用湖南省135家创业企业的调查数据进行论证,研究结果表明,有商业教育背景的和有会计或财务从业经验的创业企业家对融资方案认知程度更高,与金融界有密切联系的创业企业家也有助于其对融资方案的认知,但创业企业家的通用性人力资本对其认知融资方案几乎不起作用。     

The atmospheric environment—an introduction

The atmosphere is part of the environment with which the human organism is permanently confronted. Epidemiological research investigates the occurrence of effects on morbidity and mortality due to heat, cold, air pollution and changes in the weather. Concentrating on aspects of the environment relevant for medical questions, three major complexes of effects can be discriminated: the complex conditions of heat exchange, the direct biological effects of solar radiation, and air pollution. Biometeorological knowledge can serve to assess the atmospheric environment, and can also be of help in the field of preventive planning, to conserve and develop the climate as a natural resource with regard to man's health, well-being and performance.     

Spontaneous rhythmic contractions of human saphenous veins isolated from old subjects are sensitive to cyclooxygenase inhibitors

Summary Spontaneous rhythmic contractions were observed in some preparations of human isolated saphenous veins from old (>60 years) subjects. These contractions were insensitive to adrenergic and histaminergic blockers, but were abolished by the cyclooxygenase inhbitors, aspirin and indomethacin, indicating the participation of endogenous eicosanoids.     

Persistent 24-h variations of urinary 6-hydroxy melatonin sulphate and cortisol in Antarctica

Summary Bright light (2000–3000 lux) of sufficient intensity to suppress human melatonin secretion, acts as a strong zeitgeber in the entrainment of circadian rhythms in man. In polar conditions, light of this intensity is not experienced for several weeks during the winter. The entrainment of human circadian rhythms, in particular that of melatonin, is clearly of interest in these circumstances. Urinary 6-hydroxy melatonin sulphate (aMT6s) is a good index of melatonin secretion in man. In a limited study of seven male volunteers living on an Antarctic base the overall 24-h rhythm of aMT6s excretion was maintained at four different times of year (spring, summer, autumn and winter) and no significant seasonal effects were noted. Cortisol excretion, appeared to be markedly affected by the season although other factors such as social and environmental stress cannot be discounted. These observations suggest that in the absence of a strong light-dark cycle melatonin production may be entrained by other factors.     

Human myeloperoxidase activity is inhibited in vitro by quercetin. Comparison with three related compounds

Summary Quercetin is an effective inhibitor of human myeloperoxidase (MPO) activity, both with purified enzyme (IC₅₀=3.5 M) and in a system using stimulated human neutrophils. Quercetin is significantly more potent than three other related compounds (rutin, rutin sulfate and troxerutin) and than methimazole, a previously-known myeloperoxidase inhibitor. The inhibitory activity of quercetin is of the competitive type. Moreover, quercetin is directly able to scavenge hypochlorous acid (HOCl), a chlorinated species generated by the, MPO/H₂O₂/Cl^– system.     

新疆南疆旅游人力资源开发浅析

旅游人力资源是旅游业发展的核心竞争力构成的主体。作者对南疆旅游人力资源现状进行了详尽的分析,指出了其存在的问题,提出了全方位提高南疆旅游人力资源素质的具体对策。     

老子哲学视野中的“道”“天地”与“人”

"道"是老子的核心话语,老子通过"道""天地"与"人"的比较来完成对人类社会政治的建议与批判。老子在《道德经》里给我们现代人提供了一个在层次上极为清晰的三种秩序与价值,在它们之间互相的张力之中实现了某种平衡,从而游刃有余地出入其间,体现出道家在出世、入世之间的智慧。     

试析物理学大师在求真臻美趋善中的人文情怀

科学家的人文情怀指的是主体从自身出发或由己出发的内在抱负,是寓理(伦理)于情、发情于理、情与意相投的状况。本文从科学家的人文情怀之基本内涵、多维度的结构及其表现形式和重大价值入手,探讨并揭示了物理学大师在求真、臻美和趋善中所体现出的高尚情怀,其本质是科学家所能够达到的精神的大自由。