Results 21 to 30 of about 6,264 (97)
目的 本国际临床指南由欧洲残疾儿童学会(the European Academy of Childhood Disability,EACD)牵头制定,旨在解决发育性协调障碍(developmental coordination disorder,DCD)的定义、诊断、评估、干预以及与社会心理方面的临床应用关键问题。 方法 本指南针对五个领域的关键问题,通过文献综述和专家团队的正式讨论达成共识。为保证指南的循证基础,以“机制”、“评估”和“干预”为检索词, 对2012年更新以来提出的最新建议以及新增的“社会心理问题”和“青少年/成人”为检索词进行检索。根据牛津大学循证医学中心证据等级 (证据水平 [level of evidence, LOE]1–4) 将结果进行分类,最终转化为指南建议。并由国际 ...
Jing Hua +6 more
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Summary of Desert Photovoltaic Power Transmission Technology [PDF]
To achieve carbon peaking and carbon neutrality goals and improve energy efficiency, new energy plays a major role in China strategic deployment. However, as centralized photovoltaic is located in desert areas, photovoltaic power transmission has become ...
CHU Shuai +5 more
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The Analysis of Impact on Per Capita Real GDP of Provinces in Western Region by Western Region Development Program [PDF]
自改革开放以来,我国经济发展取得了巨大成就,但同时地区间经济发展水平的差距也越来越大,为了促进我国区域经济协调发展,缩小东西部地区发展差距,2000年国家正式实施了“西部大开发”战略。在政策实施15年积累了足够多数据的基础上,本文首先分析了“西部大开发”对西部省份人均实际GDP增长率的影响,在此基础上分析了“西部大开发”对我国经济收敛性的影响,从这相互联系的两方面对“西部大开发”的政策效果进行了评价,结论是“西部大开发”基本实现了其战略目标。 在政策绩效评价广泛应用的“反事实”方法中 ...
孙天柱
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ABSTRACT With the continuous advancement of materials science and technology, the rare metal gallium has increasingly emerged as a promising alternative to the toxic metal mercury. Although existing research has predominantly focused on the high electrical conductivity and excellent deformability of liquid metal (LM), its intrinsic fluidic property ...
Feifan Guo +6 more
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ABSTRACT Objectives To compare the maternal hemodynamics of Chinese women at low and at high risk for preterm pre‐eclampsia (PE) and assess the differences in hemodynamic parameters between high‐risk women with or without prophylactic aspirin. Methods This was a prospective longitudinal case–control study of 857 Chinese women with a singleton pregnancy
X. Wang +11 more
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Assessing the genetic diversity of edible insects harvested from the wild is a pre‐requisite for designing conservation and management policies. The caterpillars of Gynanisa maja (Saturniidae) are harvested in large numbers in mopane woodlands in southern Africa, where they represent a seasonal source of income and nutrition to many rural communities ...
Zwannda Nethavhani +3 more
wiley +1 more source
Manipulator dynamic modeling and motion planning for live working robot [PDF]
This article is focused on a double-arm and double-manipulator live working robot.The arm motion of the robot for insulator string replacement during the operation process was decomposed.The basic operation dynamic model was established by the Lagrange ...
JIANG Wei +3 more
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Research on the potential and strategy for coal resources exploitation in Xinjiang [PDF]
In view of the uniqueness of the occurrence conditions of coal resources in Xinjiang and the fragility of the ecological environment in the coal occurrence area, it is urgent to develop coal resources in Xinjiang scientifically. Therefore, in this paper,
Changshen WANG +7 more
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Design and Implementation of Online Monitoring System for HVDC Breaker Based on GPRS and PAC [PDF]
近年来随着我国坚强智能电网的快速建设和发展,越来越多的系统应用环节需要使用远程在线监控技术,人们对远程监控的实时性、可靠性和功耗的要求也越来越严格。高压直流开关作为高压直流输电网络中的重要组成部分,对它的各项基本参数和运行状态参数的测量也一直是直流输电技术的研究难点之一,主要原因在于:(1)信号采集困难:它是高压设备,作用时会释放巨大的能量;(2)信号传输困难:设备处于高压运行环境,与地面存在较大的绝缘间隔,无法使用有线通讯传输方式;(3)参数无法直接获得:设备自身没有相应的信号传感设备 ...
许登华
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文章为针对特高压直流输电工程中的阀厅火灾报警的设计进行研究,随着技术的不断进步及革新,阀厅火灾报警的设计也将日渐成熟,文章作于±800kV酒泉-湖南特高压直流输电工程建设期间,文中绝大多数设计都已应用于本工程中。
虎 戴
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