Towards the Unified Principles for Level 5 Autonomous Vehicles

The rapid advance of autonomous vehicles (AVs) has motivated new perspectives and potential challenges for existing modes of transportation. Currently, driving assistance systems of Level 3 and below have been widely produced, and several applications of Level 4 systems to specific situations have also been gradually developed. By improving the automation level and vehicle intelligence, these systems can be further advanced towards fully autonomous driving. However, general development concepts for Level 5 AVs remain unclear, and the existing methods employed in the development processes of Levels 0–4 have been mainly based on task-driven function development related to specific scenarios. Therefore, it is difficult to identify the problems encountered by high-level AVs. The essential logical and physical mechanisms of vehicles have hindered further progression towards Level 5 systems. By exploring the physical mechanisms behind high-level autonomous driving systems and analyzing the essence of driving, we put forward a coordinated and balanced framework based on the brain–cerebellum–organ concept through reasoning and deduction. Based on a mixed mode relying on the crow inference and parrot imitation approach, we explore the research paradigm of autonomous learning and prior knowledge to realize the characteristics of self-learning, self-adaptation, and self-transcendence for AVs. From a systematic, unified, and balanced point of view and based on least action principles and unified safety field concepts, we aim to provide a novel research concept and develop an effective approach for the research and development of high-level AVs, specifically at Level 5.     

谈我省煤炭专网通信及信息网络系统改造

通过对我省煤炭专网通信与信息系统应用现状及存在问题的分析,论述了建立综合信息网络系统的必要性和可能性,并初步阐述了综合信息网络系统建设应遵循的规划目标和原则。     

3NWX型三产品重介质旋流器的工作原理与特点

介绍了三产品重介质旋流器的工作原理、结构、主要特点以及结构参数对选煤效果的影响，说明了3NWX型无压给料三产品旋流器选煤技术的优越性，并指出今后应建立优化旋流器结构参数的数学模型。     

城市色彩的改善

该文阐述匡正当前城市色彩在使用上的缺点，提出改善的原则与技法，以供城市规划、设计及施工人员的参考。     

论现代城市滨水区的景观设计

在当代人们所倡导的可持续性城市发展的宏观背景下,着重探讨现代城市滨水区景观如何合理设计,并且分析城市滨水区成功开发案例加以研究,综合出现代城市滨水区景观设计的一般原则,提出现有阶段城市滨水区设计方向,对当前城市建设具有指导性作用。     

科学发展观和生态优先思想在城市规划中的实践——上海市崇明三岛总体规划简析

崇明三岛的岛域规划蓝图,拟按照生态环境优先的原则,选择和确立一条体现科学发展观的区域发展道路,合理比选主导功能和产业组合,坚持留足自然生态涵养空间、留足未来国际级项目空间,以代际可持续发展的眼光,并在总体规划布局上,预构好推动崇明社会经济和城乡建设有序发展的城镇体系和基础设施布局框架.     

Toxic metals in the atmosphere in Lahore, Pakistan

Aerosol mass (PM₁₀ and PM_2.5) and detailed elemental composition were measured in monthly composites during the calendar year of 2007 at a site in Lahore, Pakistan. Elemental analysis revealed extremely high concentrations of Pb (4.4 μg m^− 3), Zn (12 μg m^− 3), Cd (0.077 μg m^− 3), and several other toxic metals. A significant fraction of the concentration of Pb (84%), Zn (98%), and Cd (90%) was contained in the fine particulate fraction (PM_2.5 and smaller); in addition, Zn and Cd were largely (≥ 60%) water soluble. The 2007 annual average PM₁₀ mass concentration was 340 μg m^− 3, which is well above the WHO guideline of 20 μg m^− 3. Dust sources were found to contribute on average (maximum) 41% (70%) of PM₁₀ mass and 14% (29%) of PM_2.5 mass on a monthly basis. Seasonally, concentrations were found to be lowest during the monsoon season (July-September). Principle component analysis identified seven factors, which combined explained 91% of the variance of the measured components of PM₁₀. These factors included three industrial sources, re-suspended soil, mobile sources, and two regional secondary aerosol sources likely from coal and/or biomass burning. The majority of the Pb was found to be associated with one industrial source, along with a number of other toxic metals including As and Cr. Cadmium, another toxic metal, was found at concentrations 16 times higher than the maximum exposure level recommended by the World Health Organization, and was concentrated in one industrial source that was also associated with Zn. These results highlight the importance of focusing control strategies not only on reducing PM mass concentration, but also on the reduction of toxic components of the PM as well, to most effectively protect human health and the environment.     

现浇混凝土空心楼盖结构应用实例

结合工程实例,对现浇混凝土空心楼盖的特点及设计原则进行了阐述,供工程技术人员参考。     

建筑给水排水系统图表示方法的分析

本文列举了系统图的各种表示方法,比较它们的优缺点,并提出了各自的适用范围     

生态建筑漫谈

扼要地介绍了生态建筑的含义及其与可持续发展的关系 ,分析了传统的生态建筑 ,并论述了生态建筑的设计原则及其评估指标 ,最后对生态建筑的未来进行了展望