A culvert is a bridgelike structure or tubular bridge with a clearance width under 2.0 meters.The improvemere works of track lines,the demand for higher tra
作为精准扶贫的重要举措之一,产业扶贫对贫困户提出了产业参与要求,并辅以一定的产业帮扶,取得了突出成就.但是,在绝大多数贫困人口逐渐摆脱贫困后,剩余贫困人口有较大比例处
随着信息技术的快速发展,近年来我国石油领域实现了较为长足的进步,油藏数值模拟技术的广泛应用就是这一进步的最直观体现。对于缝洞型碳酸盐岩油藏来说,其本身具备着尺度差
Bridges in service in most Western Countries were built according to old codes that foresaw design loads inconsistent with todays traffic demand.In this pap
Fatigue is a deterioration process where a material flaw,initially microscopic in size,develops into a larger defect and eventually a crack.This occurs beca
Robustness has gathered in the last decades the interest of many specialists in the field of structures and infrastructures engineering.Such a characteristi
In this work a methodology is proposed for the correction of condition rating to make it dependent on the system behavior.Robustness and Redundancy concepts
In this work the robustness of a control system to perform within satisfactory limits when damages in some of its elements occur,is investigated.Robustness
石油是全球重要的战略能源,石油美元发展策略是助力美元国际化快速发展的重要力量之一。随着全球能源格局的变迁,当今石油美元呈现出新特点。第一,石油供求变化对石油美元产生重要影响。第二,石油美元环流出现“东”流、投资渠道多元化以及规模减小的新变化。第三,美元指数与石油价格呈脱钩趋势。同时,新能源和低碳经济开始进入人们的视线,低碳发展已经迫在眉睫。在传统能源作为主导、新能源快速发展的形势下,我国要合理利用自身巨大的能源需求,探索出一条针对不同能源类型的“二元路径”。一方面,争取传统能源结算领域更大话语权;另一方面
During the last 15 years IDEAM has been involved in the development of new steel and composite (steel and concrete) solutions for several Spanish High Speed