Remote sensing technology has been widely recognized for contributing to emergency response efforts after the World Trade Center attack on September 11th, 2001. The need to coordinate activities in the midst of a dens...Remote sensing technology has been widely recognized for contributing to emergency response efforts after the World Trade Center attack on September 11th, 2001. The need to coordinate activities in the midst of a dense, yet relatively small area, made the combination of imagery and mapped data strategically useful. This paper reviews the role played by aerial photography, satellite imagery, and LIDAR data at Ground Zero. It examines how emergency managers utilized these datasets, and identifies significant problems that were encountered. It goes on to explore additional ways in which imagery could have been used, while presenting recommendations for more effective use in future disasters and Homeland Security applications. To plan adequately for future events, it was important to capture knowledge from individuals who responded to the World Trade Center attack. In recognition, interviews with key emergency management and geographic information system (GIS) personnel provide the basis of this paper. Successful techniques should not be forgotten, or serious problems dismissed. Although widely used after September 11th, it is important to recognize that with better planning, remote sensing and GIS could have played an even greater role. Together with a data acquisition timeline, an expanded discussion of these issues is available in the MCEER/NSF report “Emergency Response in the Wake of the World Trade Center Attack; The Remote Sensing Perspective” (Huyck and Adams, 2002) Keywords World Trade Center (WTC) - terrorism - emergency response - emergency management - ground zero - remote sensing - emergency operations - disasters - geographic information systems (GIS) - satellite imagery - synthetic aperture radar (SAR) - light detection and ranging imagery (LIDAR)展开更多
Shanghai World Financial Center is one of the highest buildings in the world, of which cumulation of vertical deformation during construction is significant and worth investigating. A refined finite element model was ...Shanghai World Financial Center is one of the highest buildings in the world, of which cumulation of vertical deformation during construction is significant and worth investigating. A refined finite element model was developed to conduct full-process analysis of construction of super-high rise buildings like Shanghai World Financial Center, in which the discrete analysis method of time-varying structures and age-adjusted effective modulus method were both used. In the finite element analysis, the whole construction process was divided into a series of stages, each with a structural system that is a part of the whole structure and with different material parameters, geometrical parameters, loading and boundary conditions. The whole construction process of Shanghai World Financial Center in consideration of creep of concrete was simulated successfully by using the finite element model and the analytical method developed. With respect to different construction stage, the total vertical deformation, inter-floor compression deformation and the relative deformation between the outer frame and the core-wall were obtained through the analysis. The comparison between the results from the stage-wise full-process analysis of construction with and without considering the creep and the results from the conventional analysis of the whole building under the total load from all self-weight and construction applied to the structure "in one go" shows that the cumulative effect on the deformation from the construction process and the creep effect need to be considered in analyzing the deformation of Shanghai World Financial Center, and the super-high rise buildings suchlike. Finally, the simulation results correlate well with the monitoring results-a proof of the feasibility and the validity of this paper.展开更多
World Data Center(WDC)for Seismology,Beijing has developed for 20 years in China until this year.The sustained and stable data sharing service system has already taken shape.This article gives an overview of the const...World Data Center(WDC)for Seismology,Beijing has developed for 20 years in China until this year.The sustained and stable data sharing service system has already taken shape.This article gives an overview of the construction and development of WDC for Seismology,Beijing.It outlines the history,facilities and technical specifications of the center.It also illustrates the data service,the website,and gives a brief description of the perspective.展开更多
24 September 2013, Shenzhen--ZTE today announced the release of the BigMatrix 9900 series of data center switches, the world＇ s largest-capacity data center switches. The BigMatrix 9900 product family comprises data...24 September 2013, Shenzhen--ZTE today announced the release of the BigMatrix 9900 series of data center switches, the world＇ s largest-capacity data center switches. The BigMatrix 9900 product family comprises data switches with the largest capacity in the world. The switches are designed large cloud computing and big data scenarios and allow for higher-density deployment in data centers. Each single slot can support up to 144 10G ports, 36 40G ports, or 12 IOOG ports. The Big Matrix 9900 series comprises four switch models-9916, 9912, 9908, and 9904-each of which supports a maximum switching capacity of 84.48 Tbps.展开更多
The mission of the Center for Translation is to promote international dissemination of Traditional Chinese Medicine with service first and quality oriented.Our top-level and excellent talent team includes famous exper...The mission of the Center for Translation is to promote international dissemination of Traditional Chinese Medicine with service first and quality oriented.Our top-level and excellent talent team includes famous experts at home and abroad as consultants,senior,middle-aged and young expertswith international background of traditional Chinese medicine,English editors and senior translators.展开更多
高水平人才高地不仅是高水平人才聚集区,更是破“五唯”立新标、深化科技体制改革、前瞻布局的人才特区,是原始创新和文理交融的策源地。其核心问题是如何打造一流人才体系,包括一流人才的驱动、甄选、吸引、组织管理与自主培养等。为...高水平人才高地不仅是高水平人才聚集区,更是破“五唯”立新标、深化科技体制改革、前瞻布局的人才特区,是原始创新和文理交融的策源地。其核心问题是如何打造一流人才体系,包括一流人才的驱动、甄选、吸引、组织管理与自主培养等。为此本文对愿景驱动、一流人才的标准、甄选方法等进行探讨,分析建设高水平人才高地与一流学科对促进自主培养与留住一流人才的重要作用。鼓励原始创新见效最快的方式是盘点已经问世却尚未得到公认的原创成果,让完成人及时胜出。未来观与AI大爆发决定高水平人才高地建设的前瞻布局,强调安全与发展同等重要。指出借助AI for Science在科研管理创新上的潜力与功效,推动AI+科技评价和AI化改革,知识点考核,杜绝垃圾论文、避免劣币驱逐良币。粤港澳大湾区,特别是深圳,应该从对标硅谷,到跃升为绿色、人文、科技、安全的世界级智慧城市群,实现我国科技的高质量、安全永续的发展,推动世界科学中心建设。展开更多
基金the Earthquake Engineering Research Centers Program of the National Science Foundation(NSF) under a Supplement to Award Number ECC-9701471 to the Multidisciplinary Center for Earthquake Engineering Research
文摘Remote sensing technology has been widely recognized for contributing to emergency response efforts after the World Trade Center attack on September 11th, 2001. The need to coordinate activities in the midst of a dense, yet relatively small area, made the combination of imagery and mapped data strategically useful. This paper reviews the role played by aerial photography, satellite imagery, and LIDAR data at Ground Zero. It examines how emergency managers utilized these datasets, and identifies significant problems that were encountered. It goes on to explore additional ways in which imagery could have been used, while presenting recommendations for more effective use in future disasters and Homeland Security applications. To plan adequately for future events, it was important to capture knowledge from individuals who responded to the World Trade Center attack. In recognition, interviews with key emergency management and geographic information system (GIS) personnel provide the basis of this paper. Successful techniques should not be forgotten, or serious problems dismissed. Although widely used after September 11th, it is important to recognize that with better planning, remote sensing and GIS could have played an even greater role. Together with a data acquisition timeline, an expanded discussion of these issues is available in the MCEER/NSF report “Emergency Response in the Wake of the World Trade Center Attack; The Remote Sensing Perspective” (Huyck and Adams, 2002) Keywords World Trade Center (WTC) - terrorism - emergency response - emergency management - ground zero - remote sensing - emergency operations - disasters - geographic information systems (GIS) - satellite imagery - synthetic aperture radar (SAR) - light detection and ranging imagery (LIDAR)
基金Sponsored by the Technology Pillar Program During the Eleventh Five-Year Plan Period (Grant No.2006BAJ01B02)
文摘Shanghai World Financial Center is one of the highest buildings in the world, of which cumulation of vertical deformation during construction is significant and worth investigating. A refined finite element model was developed to conduct full-process analysis of construction of super-high rise buildings like Shanghai World Financial Center, in which the discrete analysis method of time-varying structures and age-adjusted effective modulus method were both used. In the finite element analysis, the whole construction process was divided into a series of stages, each with a structural system that is a part of the whole structure and with different material parameters, geometrical parameters, loading and boundary conditions. The whole construction process of Shanghai World Financial Center in consideration of creep of concrete was simulated successfully by using the finite element model and the analytical method developed. With respect to different construction stage, the total vertical deformation, inter-floor compression deformation and the relative deformation between the outer frame and the core-wall were obtained through the analysis. The comparison between the results from the stage-wise full-process analysis of construction with and without considering the creep and the results from the conventional analysis of the whole building under the total load from all self-weight and construction applied to the structure "in one go" shows that the cumulative effect on the deformation from the construction process and the creep effect need to be considered in analyzing the deformation of Shanghai World Financial Center, and the super-high rise buildings suchlike. Finally, the simulation results correlate well with the monitoring results-a proof of the feasibility and the validity of this paper.
文摘World Data Center(WDC)for Seismology,Beijing has developed for 20 years in China until this year.The sustained and stable data sharing service system has already taken shape.This article gives an overview of the construction and development of WDC for Seismology,Beijing.It outlines the history,facilities and technical specifications of the center.It also illustrates the data service,the website,and gives a brief description of the perspective.
文摘24 September 2013, Shenzhen--ZTE today announced the release of the BigMatrix 9900 series of data center switches, the world＇ s largest-capacity data center switches. The BigMatrix 9900 product family comprises data switches with the largest capacity in the world. The switches are designed large cloud computing and big data scenarios and allow for higher-density deployment in data centers. Each single slot can support up to 144 10G ports, 36 40G ports, or 12 IOOG ports. The Big Matrix 9900 series comprises four switch models-9916, 9912, 9908, and 9904-each of which supports a maximum switching capacity of 84.48 Tbps.
文摘The mission of the Center for Translation is to promote international dissemination of Traditional Chinese Medicine with service first and quality oriented.Our top-level and excellent talent team includes famous experts at home and abroad as consultants,senior,middle-aged and young expertswith international background of traditional Chinese medicine,English editors and senior translators.
文摘高水平人才高地不仅是高水平人才聚集区,更是破“五唯”立新标、深化科技体制改革、前瞻布局的人才特区,是原始创新和文理交融的策源地。其核心问题是如何打造一流人才体系,包括一流人才的驱动、甄选、吸引、组织管理与自主培养等。为此本文对愿景驱动、一流人才的标准、甄选方法等进行探讨,分析建设高水平人才高地与一流学科对促进自主培养与留住一流人才的重要作用。鼓励原始创新见效最快的方式是盘点已经问世却尚未得到公认的原创成果,让完成人及时胜出。未来观与AI大爆发决定高水平人才高地建设的前瞻布局,强调安全与发展同等重要。指出借助AI for Science在科研管理创新上的潜力与功效,推动AI+科技评价和AI化改革,知识点考核,杜绝垃圾论文、避免劣币驱逐良币。粤港澳大湾区,特别是深圳,应该从对标硅谷,到跃升为绿色、人文、科技、安全的世界级智慧城市群,实现我国科技的高质量、安全永续的发展,推动世界科学中心建设。
