Visibility distances with halogen and conventional headlights

Abstract.— Using visibility distance as a criterion, halogen and conventional continental European high and low-beam headlights were compared in a series of field experiments. On high-beam without opposing light the halogen headlights offered about 25% longer visibility distances than the conventional headlights. With both opposing cars using low-beam there was a slight advantage (<5 m) in favour of halogen headlights. The optimal dipping distance was a function of high-beam system (intensity) rather than low-beam system. Small differences in aiming, atmosphere etc. caused larger differences in visibility distance than did the headlight system.     

Managing Mental Health Crises of Foreign College Students

Student services professionals manage a number of mental health crises as part of their job responsibilities. This article examines some of the issues that arise from assisting foreign college students experiencing such crises, with special focus on psychiatric committal, withdrawal from school, and return to the home county.     

自尊的毕生发展

自尊是心理学的一个重要研究领域, 文章介绍了自尊的毕生发展研究在近三十年来的进展, 主要探讨了自尊的稳定性及其毕生发展的影响因素, 包括年龄、性别、种族和文化、社会经济地位与家庭教养方式等方面, 指出自尊毕生发展的研究将来应关注自尊的纵向研究和本土化研究, 并注意区分和探讨不同形式自尊的发展变化。