Results 81 to 90 of about 93,324 (235)

大容量试验的新情况——1979年悉尼“高压开关设备”报告会介绍之一

open access: yesGaoya dianqi, 1980
综述了报告会上介绍的近年来在大容量试验研究方面的技术进展,并简述了会议概况。
doaj  

超越离合器综述

open access: yesJixie chuandong, 2005
Developing process of ratchet mechanism is expounded in theory of machines and mechanisms. In rent years, new-type overrunning clutch structures and working theory are introduced to improve transmissive performance of friction-type overrunning clutch ...
曲秀全, 陆念力, 车仁炜
doaj  

Study on Dependence between China Mainland’s and the Main International Stock Markets Based on Different Perspectives [PDF]

open access: yes, 2016
随着经济全球化的不断推进,国际资本市场逐渐呈现一体化趋势。作为反映国民经济的“晴雨表”和资本市场的重要组成部分,各国股票市场间存在怎样的关系呢?股市间的相依性结构对投资者合理制定投资组合策略以及监管当局有效防范国内外股市风险,维护市场稳定,推进股市健康发展具有重要的启示意义。中国已经成为全球第二大经济体,大陆股票市场也在近十年迅速发展。研究中国大陆股票市场与世界股票市场间的相依性结构具有重要的现实意义。 股市间的相依性历来是人们关心的重点,学者们对其进行了大量的研究。阅读已有相关文献 ...
崔振
core  

Bridging the Digital Divide: Examining the Role of Digital Health in Nepal's Healthcare Transformation

open access: yesWorld Medical &Health Policy, Volume 18, Issue 1, March 2026.
ABSTRACT This systematic review examines the digital health interventions for inclusive and equitable solutions for transforming healthcare access and delivery in Nepal. The research focuses on improving digital health accessibility among marginalized and rural populations of Nepal.
Manoj Kumar Dahal, Gary L. Kreps
wiley   +1 more source

用断路器切合高压感应电动机

open access: yesGaoya dianqi, 1980
综述了用断路器(特别是真空断路器)切合高压电动机回路的各种工作条件。着重论述了各种过电压发生的原因、影响因素、危害程度及可采用的限压措施。
马锦柱
doaj  

Research on the value evaluation of high-tech enterprises based on Fuzzy Real Option Method [PDF]

open access: yes, 2016
随着我国多层资本市场逐步健全完善,高新技术企业的投融资活动也日趋频繁。合理评估高新技术企业价值有助于相关经济活动的展开,对于促进企业发展、IPO上市、兼并等活动都至关重要。 首先本文从高新技术企业价值的特点出发,深入分析实物期权理论、模糊数学理论及企业生命周期理论在高新技术企业价值评估的适用性,为模型的改进提供了理论基础。本文针对高新技术企业价值的特点,结合生命周期视角,提出了改进的模糊实物期权模型及评估方法,以求更为合理地描述不同生命周期阶段的高新技术企业价值 ...
蔡毅
core  

Factors That Influenced Coping With COVID‐19 During the Pandemic in Botswana

open access: yesWorld Medical &Health Policy, Volume 18, Issue 1, March 2026.
ABSTRACT This paper forms part of the broader Global South study, Personal and Family Coping with COVID‐19 in the Global South, which examines psychosocial and behavioral responses to the COVID‐19 pandemic. In Sub‐Saharan Africa, the pandemic posed significant psychological, social, and economic challenges, with important implications for preparedness ...
Magen Mhaka‐Mutepfa   +3 more
wiley   +1 more source

相位控制高压断路器的动向

open access: yesGaoya dianqi, 2001
本文综述了近年来相位控制高压断路器的应用概况和关键技术。
钱家骊
doaj  

Product Market Competition,Financial Flexibility and Corporate Financial Policies [PDF]

open access: yes, 2016
产品市场竞争会对公司财务政策产生深远影响的结论已得到广泛的认可,不同学者从不同方面展开研究,经过许多学者的努力,已经取得了相当丰富的成果。Graham&Harvey(2001)对美国392位CFO的调查研究表明,财务灵活性成为CFO在做融资决策时候的首要考虑因素。Bancel&Mittoo(2004)以及Brounenetal.(2006)对欧洲CFO的调查研究同样表明,财务灵活性是影响CFO融资决策的主要因素。因此,产品市场竞争会对公司财务政策影响必然因为公司财务灵活性的不同而存在差异。利用2001 ...
杨新宝
core  

硅基片上激光雷达技术综述

open access: yesLaser & Optoelectronics Progress, 2023
阳琴 Yang Qin   +5 more
semanticscholar   +1 more source

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