基于BIM技术的三维虚拟道路绿化树木稀疏度对驾驶员视觉疲劳的影响

运用BIM技术及3DS MAX软件建立三维道路模型,将不同绿化树木稀疏度的公路以图形的形式展现出来,并通过BIM软件把不同道路在一天不同时间段的日照所投射出来的树荫进行了分析,探讨了车辆在高速行车过程中,道路两侧树木稀疏度对驾驶员视觉疲劳的影响,为后续行车安全方面研究提供基础数据。     

浅析机动车排气检测监管系统防作弊功能应用

随着科学技术的发展,人们生活水平的提高,我国机动车数量也越来越多,机动车的排气系统排出大量的有毒有害气体,严重影响着大气环境和人的身体健康.所以,我国制定了严格的机动车排气监管标准,控制机动车的尾气排量.为了防止机动车排气检测过程中出现作弊的情况,在机动车排气检测监管系统设置防作弊功能.本文主要研究了机动车排气检测监管系统防作弊功能的基本原理,并分析了其实际应用价值.     

浅谈高原机场运行

通过攀枝花机场一起跑道外接地事件分析简要介绍了高原机场运行的危险和困难,以及民航局对高原机场的运行飞机和飞机维护的特殊要求,强调了高原运行的特点,需要各航空公司强化风险管理、应用新的航行技术才能保证高原运行的安全。     

足球运动员大强度高原训练肺通气功能的监控研究

本文采用上海医疗器械修理厂制造的FJD-80单筒肺量计测试了辽宁青年足球队10名优秀足球运动员安静、大强度高原训练后、次日晨的肺通气功能指标。发现VC大强度高原训练后有下降趋势。FEV1.0三次测定值无差异,表明评定足球训练负荷强度时可不测定此项指标。MVV大强度高原训练后变化显著,提示我们:足球教练员可用MVV评价高原训练负荷强度,如果次日晨即恢复正常,说明队员机体能够适应,教练员可继续执行原训练计划。     

汽车驾驶员视觉注意特性及信息处理结构模型的构建

车辆交通系统是人一车一环境三要素构成的复杂系统.依据认知心理学理论对驾驶员的视觉适应性和视觉注意特性进行了分析,对驾驶员的信息获取和处理机制进行了研究,建立了驾驶员对认知对象的信息处理模型,并分析了信息处理的特点.     

机动车排气污染来源分析

随着机动车数量迅猛增长,机动车排气污染问题日趋严重,机动车排放污染物成为城市大气污染的主要部分。机动车排放主要污染物由一氧化碳、碳氧化合物、氮氧化物、碳烟颗粒构成。点燃式发动机排放控制技术主要从优化发动机结构、闭环电控发动机管理、燃油蒸发物控制、废气再循环、尾气净化等方面着手解决;压燃式发动机排放控制主要从燃料前处理、机内净化、废气后处理三方面着手解决。     

试论视觉思维中的意象功能

视觉思维自始至终借助意象,在观察、想象、构绘等形式的不断交替、变化中进行创造性活动。可以说,意象在知觉与思维之间建起了一座桥梁,它对于艺术的创造与鉴赏有着深远的影响。     

浅谈机动车的语言

语言是人类进行交往沟通的重要工具.那么,机动车的"语言"就是机动车上配置的各种照明、信号和仪表装置,且大多数由驾驶员适时操作控制而发出的各种信号.可分为视觉信号和听觉信号两大类.正确使用和注意观察辨别这些信号,对于减少道路交通事故与预防机械故障发生具有十分重要意义.     

高原窦性心动过缓29例食管心房调搏窦房结功能测定分析

作者于94年11月至98年10月，对长期居住高原（20年以上）患窦性心动过缓患者29例进行食道心房调搏，测定窦房结功能。结果表明，受检者29例中，仅1例窦房结功能低下，与阿托品试验有良好相关性，说明高原环境对人体植物神经张力影响十分明显，高原性窦性心动过缓是慢性高原病之一，世居者随海拔高度的增高可患慢性高原病。     

价值网络：文化视角下的创新意义与功能

价值网络是一个经济概念,同时也是一个文化概念。从文化的视角分析,价值网络创建了一个开放、平等、共享、创新的文化空间,改善了企业与外部环境的互动及内部流程的优化,营造了一个产品、知识交流以及用户通讯的创新环境。创新模式和创新语境的变化,使得企业创新的价值范型发生改变,企业的价值取向、价值活动方式乃至整个价值生态系统必然随之发生变化。     

中日合作成功进行“青藏高原能量水分循环试验”预试验

中国第二次青藏高原气象科学试验“青藏高原地气系统物理过程观测和理论研究（ＴＩＰＥＸ）”和中日合作青藏高原能量水分循环试验（ＧＡＭＥ／Ｔｉｂｅｔ）,是继１９７９年第一次青藏高原气象试验（ＱＸＰＭＥＸ）之后,在我国青藏高原上进行的又一次综合性气象科学联合考察活动。这次考察活动采用的观测手段及其产生的影响都将是前所未有的,必将提高我国青藏高原气象科学研究的水平,也将为我国青藏高原气象学研究走向世界奠定良好的基础。青藏高原约占我国陆地面积１／４,平均海拔４０００米以上,是世界上最高大、地形最复杂的高原。…     

A generalist's vision

Many of the recent advances in the history of science have come from local microstudies, but with the unintended by-product of a typically "postmodern" fragmentation of knowledge. The question for us post-postmodernists is how to write a broader "general" history of science-a history for all of us specialists--without losing the advantages of case study. One way, this essay suggests, is to structure case studies around the activities or issues that are common to knowledge production generally: for example, issues of common practices, role and identity, credibility and trust, fairness in participation and reward, and translocal circulation. Such studies would be particular and local yet transcend the singularities of period, place, and discipline. They would facilitate productive contest over the general meaning of science in its diversely varied forms.     

Colour vision in animals

The nature of human colour vision has been the subject of much research, and is generally well understood. By contrast, relatively little is known about colour vision in animals. This partly reflects experimental problems for it is difficult to know whether an animal is responding to a colour cue or to some other external stimulus. This article review current knowledge about colour vision in vertebrates.     

The ecology of colour vision

Colour vision in man is well understood, but for obvious experimental reasons it is less so in the case of other animals. Some evidentally have a three-colour system similar to our own but based on different primary colours. In particular, some are sensitive to ultraviolet light, which the human eye is not.     

中国柴油车、车用柴油机发展面临的形势及对策建议

近二十年来,面对世界石油资源日趋贫乏给社会发展带来的压力,面对汽车保有量急剧增长对环境的影响,世界汽车界不停地在寻找实现汽车工业可持续发展的解决方法.在不断的技术发展中,人们对柴油车、车用柴油机有了更新、更深入的认识,也为我国汽车工业发展提供了可借鉴的经验.     

A promising route to neuromorphic vision

The human vision system has a very strong capability in perceiving surround-ings.Such visual perception starts in the retina,which receives and preprocesses the...     

Road damage and the vehicle

In recent years there has been an increasing awareness of a relationship between road damage and high axle-loads. The heavy-vehicle operator constantly seeks new legislation permitting the use of larger vehicles to achieve economies of scale while the controller of the highway network resists such pressure to contain maintenance and protect the environment. This article examines the factors that influence the amount of road damage inflicted by a vehicle and identifies the options that exist to minimize it.     

Institute of Tibetan Plateau Research

The Tibetan Plateau (Qinghai-Xizang Plateau)is a unique geological-geographical unit on Earth, an ideal region for studies into the formation and evolution of the lithosphere and the dynamic mechanism of the earth crust. The uplifting of the Plateau exerts profound influence upon the evolution and differentiation of the natural environment of the plateau itself, its adjacent regions and the Northern Hemisphere. As a unique natural geographical unit, the Plateau holds a special status in the whole globe due to its special natural environment and ecosystems, which is also in close relation to global environmental change.The significance of the Plateau research should be recognized not only in the fundamental research fields of geo-sciences and biology, but also in its application to resource exploitation, environmental protection and sustainable development of the Plateau region.