空间布局与营造技术的结合同济大学教学科研综合楼设计

文章简要介绍了同济大学教学科研综合楼设计,指出设计充分考虑了高校教育交流、融合、开放的特点,塑造了建筑简约的外形和丰富的内部空间,将该建筑营造为促进学术交流、拓展教育资源的战略平台及应用创新工程技术的展示平台。     

鄂尔多斯盆地Y66井区延9油层组砂体连通性评价

鄂尔多斯盆地Y66井区延9油层组属于低孔-低渗储层,注水见效差异显著。为实现该油层组高效开发,利用静态和动态连通性组合分析方法系统评价延9油层组的砂体连通性。基于单砂体叠置类型确定砂体静态连通性,并引入连通厚度与连通系数对砂体连通性进行定量表征。依据开发过程中产能变化和注水响应定量描述井间砂体的动态连通性。综合钻井岩心、分析测试资料,结果表明,整个Y66井区延9油层组中部的砂体连通性较好,相对而言,西南部和东北部的砂体连通性较差;从各小层来看,延911小层和延921小层砂体具有良好的垂向叠置及横向叠置关系,连通厚度大多在6～10 m内,连通系数大多在80%以上。综合动静态资料,对油层组的连通关系进行了判别,为油气田生产开发提供理论基础。     

商业综合体的节能探讨

商业综合体等大型建筑的节能是国家实施节能降耗的重点关注对象。结合新基点公司的BuILDINGMAX、KEEPERMAX和ENERGYMAX软件平台,笔者针对商业综合体节能谈了几点自己的看法。     

轨道交通疏散平台测控技术应用

在城市轨道交通疏散平台施工中,轨道施工精调完成后,测控车模拟车辆在轨道上运行,其底部双侧轮缘位于平台安装侧钢轨上,使线路中心线位置准确及轨道面与疏散平台测控车车体框架平行,调节边、中梁确定线路中心线和轨面位置。激光标线仪的水平光线扫过横梁尺顶面和隧道管壁,水平光线至轨面标高的距离即为疏散平台模拟钢梁上缘高度值。通过模拟钢梁支架在横梁尺上模拟出疏散平台钢粱的位置,测得疏散平台钢梁上、下缘长度,然后精确加工、快速安装疏散平台钢梁。     

超高层建筑物电梯空中候梯厅控制设计研究

摘要：空中候梯厅是超高层建筑物电梯输送系统的重要组成部分,本文阐述了构成空中候梯厅的可调节转换台系统、横向移动的往复输送系统,以及穿梭电梯的系统结构、控制设计原理、运行操作技术,以及这些技术的应用,以期更合理地设计出高空电梯输送系统。     

乡村社区活化与历史街区复兴——以台湾西螺镇延平老街为例

西螺镇延平老街是台湾乡村历史街区的典型代表。文章以台湾西螺镇延平老街为例,通过对街区历史及其空间环境和文化环境的综合调查,分析其衰落的过程、原因以及存在的问题,提出了以多样态居住模式与公共环境相结合的方法。以社区规划和住宅设计为主题,将设计手段与运作模式相结合,为乡村历史街区的复兴和延续提供合理的操作手段,也为中国大陆同类型的乡村历史街区的更新与可持续发展提供借鉴。     

边坡滚石运动轨迹分析及坡形坡率设计

在闽东南地区,因花岗岩球状风化诱发的边坡滚石灾害问题十分突出,通过研究滚石运动轨迹来确定合理的坡形坡率是防范边坡滚石灾害的基本对策。对边坡坡率、平台宽度和坡面特征三个基本参数变化条件下典型边坡滚石运动轨迹进行定量计算和对比分析,得到了以下结论:1植被覆盖的土质坡面较光滑坚硬的岩质坡面具有明显的"消能"效应;2加宽平台及增加平台植被可有效阻碍滚石运动;3放缓坡率能延缓滚石启动变形,并能明显控制滚石运动距离;4宽平台结合上缓下陡的坡形坡率设计是控制滚石灾害的优选方案。     

The determinants of fishing vessel accident severity

The study examines the determinants of fishing vessel accident severity in the Northeastern United States using vessel accident data from the U.S. Coast Guard for 2001–2008. Vessel damage and crew injury severity equations were estimated separately utilizing the ordered probit model. The results suggest that fishing vessel accident severity is significantly affected by several types of accidents. Vessel damage severity is positively associated with loss of stability, sinking, daytime wind speed, vessel age, and distance to shore. Vessel damage severity is negatively associated with vessel size and daytime sea level pressure. Crew injury severity is also positively related to the loss of vessel stability and sinking.     

浙江严子陵钓台文化景观变迁探析

严子陵钓台是中国隐士文化景观的重要组成部分。通过文献整理,现场调研等研究方法,探索严子陵钓台历史变迁,共分为形成之初、繁荣发展、明清与近代发展3个时期。并且以钓台测绘图为基础,结合古籍文献对盛期钓台进行复原。在此基础上,从山水形胜、文人活动、景面文心3个方面分析了严子陵钓台的景观形成与特征。为严子陵钓台文化景观的保护提供参考,也为同类型文化景观的研究工作提供了一种研究思路。     

Value creation in software service platforms

In order to benefit from operating an IT service platform (e.g., SaaS platform), platform providers need to find a way to keep their existing users and application services active sources of value. However, the understanding of how to achieve that is limited due to the newness of this kind of business. This paper investigates whether all stakeholders of the platform ecosystem can generate sufficient value when participating in the platform. As stakeholders, we consider application service users, service developers, and service platform providers. We also analyse the interrelationship between these stakeholders. The analysis outcome is a value creation model that allows the calculation of the stakeholders’ values. The model also helps inferring the relative impact of different factors on the evolution of values of the software service platform stakeholders. Our simulation results confirm that all stakeholders of a service platform mainly benefit from a growing installed base of application users. However, in a mature market, a large service variety mainly benefits the service platform provider, while the other stakeholders obtain a reduced increase in their benefits. In particular, the utility growth of application users becomes constrained as the benefit from new connections with other users decreases and the number of new services used decreases. Similarly, the revenue of service developer decreases, making service development less profitable. Therefore, we can state that not only a large fraction of the value creation goes to the platform provider but also that the software service ecosystem can collapse, if no mutually beneficial pricing of services is implemented.