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浅谈川渝黔合作构建长江上游核心经济区 被引量:2
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作者 李晓红 《商业时代》 北大核心 2005年第23期88-89,共2页
川渝黔三省市合作建设长江上游核心经济区的新构想,不仅有利于三省市整合资源,形成综合优势,发挥独特作用,引领西部大开发;有利于拓展新兴直辖市的发展空间和战略纵深,畅达出海大通道;有利于解决面临的诸如产业同构、无序竞争、地方保... 川渝黔三省市合作建设长江上游核心经济区的新构想,不仅有利于三省市整合资源,形成综合优势,发挥独特作用,引领西部大开发;有利于拓展新兴直辖市的发展空间和战略纵深,畅达出海大通道;有利于解决面临的诸如产业同构、无序竞争、地方保护等棘手的难题;有利于发挥重庆中心城市作用,对于把重庆真正建设成为长江上游经济中心有着十分重要的作用。 展开更多
关键词 川渝黔 建设经济区 要意 长江上游经济中心 核心经济区 合作建设 中心城市作用 西部大开发 整合资源 综合优势
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Common controversies in management of biliary strictures 被引量:3
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作者 Mansour A Parsi 《World Journal of Gastroenterology》 SCIE CAS 2017年第7期1119-1124,共6页
Biliary strictures are caused by a heterogeneous group of benign and malignant conditions, each requiring a specific treatment approach. Management of biliary strictures often involves endoscopy either for definite tr... Biliary strictures are caused by a heterogeneous group of benign and malignant conditions, each requiring a specific treatment approach. Management of biliary strictures often involves endoscopy either for definite treatment, as a bridge to surgery or for palliative purposes. Endoscopic treatment of various types of biliary strictures is not standardized and there are multiple areas of controversy regarding the best treatment options. These controversies are mainly due to lack of well-designed comparative studies to support a specific therapy. This paper reviews three common areas of controversy in the endoscopic management of biliary strictures. The areas discussed in this editorial include the role of biliary drainage in resectable malignant strictures and whether such drainage should be performed routinely prior to surgery, the best endoscopic palliation for unresectable hilar strictures and whether unilateral or bilateral stenting should be attempted, and the optimal endoscopic management for dominant strictures in patients with primary sclerosing cholangitis. The goal of this editorial is twofold. The first is to review the current literature on management of the aforementioned strictures and offer recommendations based on available evidence. The second goal is to highlight the gaps in our knowledge which in turn can encourage future research on these topics. 展开更多
关键词 Biliary stricture BENIGN Primary sclerosing cholangitis MALIGNANT Controversy Biliary drainage PREOPERATIVE Hilar stricture
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What to understand in interpretation: Meaning or sense?
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作者 袁颖磊 张添琼 《Sino-US English Teaching》 2007年第8期72-75,共4页
Source language perception is the beginning and also the most unobservable stage of interpretative activity. According to ESIT, it is the sense that constitutes a communicative intention. Sense cohort theory and requi... Source language perception is the beginning and also the most unobservable stage of interpretative activity. According to ESIT, it is the sense that constitutes a communicative intention. Sense cohort theory and requirement equation upon interpreter shall be presented in the paper by combining perspectives from psycholinguistics and cognitive science. 展开更多
关键词 SL perception SENSE sense cohort theory interpretation requirements equations
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基于UKF的雷达和机载ESM扩维跟踪 被引量:6
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作者 张翔宇 王国宏 +1 位作者 王娜 张静 《国外电子测量技术》 2011年第9期30-32,39,共4页
为有效提高异类传感器融合跟踪的效果,提出了一种基于UKF的雷达和机载ESM扩维跟踪算法。首先将目标和机载ESM的状态信息组合起来,形成一个高维的状态向量,从而有效抑制滤波中GPS定位误差所带来的影响;接着在此基础上采用UKF来实现目标... 为有效提高异类传感器融合跟踪的效果,提出了一种基于UKF的雷达和机载ESM扩维跟踪算法。首先将目标和机载ESM的状态信息组合起来,形成一个高维的状态向量,从而有效抑制滤波中GPS定位误差所带来的影响;接着在此基础上采用UKF来实现目标的定位跟踪,以求进一步减小扩维后线性化误差加大等问题的影响。仿真结果表明,该算法可更好地实现对目标的定位跟踪。 展开更多
关键词 不敏卡尔曼滤波 扩维跟踪 雷达
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