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“就矿找矿”;理论;找矿;方法;实践 1

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Being good or being known: International reputation of high-speed railway enterprises

《工程管理前沿(英文)》   页码 455-466 doi: 10.1007/s42524-023-0250-8

摘要: With fierce competition in the global high-speed railway (HSR) market, international reputation has become essential for enterprises to venture into overseas markets. However, few studies have been performed on the international reputation of HSR enterprises. This study aims to reveal the formation mechanism of HSR enterprises’ international reputation by developing a theoretical framework. The researchers identified five factors and proposed a hypothetical path model based on a comprehensive literature review. After the pilot study, questionnaires were distributed to practitioners in the international HSR industry for data collection. The path model was validated based on partial least-squares structural equation modeling. Eight of the nine paths are statistically supported. Researchers have structured a theoretical framework for the international reputation of HSR enterprises from two perspectives: Being good and being known. Subsequently, a strategic framework was developed to provide targeted promotion strategies for HSR enterprises. The findings of this study contribute to existing international reputation theories using the theoretical model and provide beneficial guidance for HSR enterprises to improve their international reputation through a strategic framework.

关键词: high-speed railway     international reputation     being good     being known     structural equation modeling    

What have we known so far about microplastics in drinking water treatment? A timely review

《环境科学与工程前沿(英文)》 2022年 第16卷 第5期 doi: 10.1007/s11783-021-1492-5

摘要:

• 23 available research articles on MPs in drinking water treatment are reviewed.

关键词: Microplastics     Drinking water treatment     Coagulation     Flocculation     Membrane     Filtration    

关于就矿找矿论的几个问题

朱训

《中国工程科学》 2015年 第17卷 第2期   页码 35-39

摘要:

“就矿找矿”是矿产勘查的一种重要指导思想和找矿方法,它是根据已知找矿线索而开展的一种找矿工作,“就矿找矿”相对于新区找矿而言,主要从找矿的空间布局,店面之别,未知区域与已知矿床之间区别之论述,分析“就矿找矿”理论的发展,提出找矿方法,进而推动“就矿找矿”理论在找矿工作中的实践路线。

关键词: “就矿找矿”;理论;找矿;方法;实践    

Well-being analysis of GSU transformer insulation incorporating the impact on power generation using

Alagarsamy KRISHNAVEL, Dusmata Kumar MOHANTA, M. Jaya Bharata REDDY

《能源前沿(英文)》 2013年 第7卷 第3期   页码 288-299 doi: 10.1007/s11708-013-0265-7

摘要: With the prevailing power scenario, every watt-second of electrical energy has its own merit in satisfying the consumer demand. At the state of such a stringent energy demanding era, failure of a power generation equipment compounds the energy constraints which will not only result in a huge loss of generation but also have an impact on capital revenue. The unexpected failure of generator step-up (GSU) transformer is especially a major disturbance in the power system operation and leads to unscheduled outages with power delivery problems. The time lag in bringing back the equipment in service after rectification or replacement may increase the criticality as the process involves mobilization of spares and maintenance professionals. Hot atmosphere existing in the vicinity of thermal power stations running round-the-clock with more than 100% plant load factor (PLF) increases the thermal stress of the electrical insulation which leads to premature failure of windings, bushings, core laminations, etc. The healthy state of the GSU transformer has to be ensured to minimize the loss of power generation. As the predication related to failure of a GSU transformer is associated with some uncertainties, a fuzzy approach is employed in this paper along with actual field data and case studies for the well-being analysis of GSU transformer.

关键词: generator step-up (GSU) transformer     well-being analysis     dissolved gases in oil analysis (DGA)     tan delta (TD)     sweep frequency response analysis (SFRA)     fuzzy inference system (FIS)    

What have we known so far for fluorescence staining and quantification of microplastics: A tutorial review

Shengdong Liu, Enxiang Shang , Jingnan Liu , Yining Wang , Nanthi Bolan , M.B. Kirkham , Yang Li

《环境科学与工程前沿(英文)》 2022年 第16卷 第1期   页码 8-8 doi: 10.1007/s11783-021-1442-2

摘要: Understanding the fate and toxicity of microplastics (MPs,<5 mm plastic particles) is limited by quantification methods. This paper summarizes the methods in use and presents new ones. First, sampling and pretreatment processes of MPs, including sample collection, digestion, density separation, and quality control are reviewed. Then the promising and convenient staining procedures and quantification methods for MPs using fluorescence dyes are reviewed. The factors that influence the staining of MPs, including their physicochemical properties, are summarized to provide an optimal operation procedure. In general, the digestion step is crucial to eliminate natural organic matter (NOM) to avoid interference in quantification. Chloroform was reported to be the most appropriate solvent, and 10–20 μg/mL are recommended as optimal dye concentrations. In addition, a heating and cooling procedure is recommended to maintain the fluorescence intensity of MPs for two months. After staining, a fluorescence microscope is usually used to characterize the morphology, mass, or number of MPs, but compositional analysis cannot be determined with it. These fluorescence staining methods have been implemented to study MP abundance, transport, and toxicity and have been combined with other chemical characterization techniques, such as Fourier transform infrared spectroscopy and Raman spectroscopy. More studies are needed to focus on the synthesis of novel dyes to avoid NOM’s interference. They need to be combined with other spectroscopic techniques to characterize plastic composition and to develop image-analysis methods. The stability of stained MPs needs to be improved.

stimuli, different responses: a pilot study assessing air pollution visibility impacts on emotional well-being

《环境科学与工程前沿(英文)》 2023年 第17卷 第2期 doi: 10.1007/s11783-023-1620-5

摘要:

● Emotional responses to visibility-reducing haze was assessed in a controlled lab.

关键词: Air pollution     Emotional wellbeing     Variability     Visual exposure     Emotional bias    

Evidence chain-based causality identification in herb-induced liver injury: exemplification of a well-known

null

《医学前沿(英文)》 2015年 第9卷 第4期   页码 457-467 doi: 10.1007/s11684-015-0417-8

摘要:

Herbal medicines have recently been recognized as the second most common cause of drug-induced liver injury (DILI) in the United States. However, reliable methods to identify the DILI causality of some herbs, such as Heshouwu (dried root of Polygonum multiflorum), remain lacking. In this study, a total of 12 307 inpatients with liver dysfunction and 147 literature-reported cases of Heshouwu DILI were screened. A general algorithm indicated that only 22.5% (9/40) and 30.6% (45/147) of all hospitalization and literature case reports, respectively, demonstrate the high probability of DILI causality of Heshouwu. By contrast, 95% (19/20) of all cases prospectively investigated by pharmacognosy, phytochemistry, and metabolomic tests exhibited highly probable causality, including a patient who was previously incorrectly attributed and a case that was excluded from Heshouwu causality by pharmacognostic evidence. Toxin (heavy metals, pesticides, and mycotoxins) contamination was also excluded from Heshouwu DILI causality. The objectivity of these screening methods for Heshouwu DILI diagnosis addresses safety concerns regarding stilbene-containing herbal medicines and dietary supplements.

关键词: drug-induced liver injury     pharmacognosy     metabolomics     stilbene     Polygonum multiflorum     Chinese herbal medicine    

一个基于混沌的分组密码算法的分析

金晨辉

《中国工程科学》 2001年 第3卷 第6期   页码 75-80

摘要:

“基于混沌的分组密码置换网络的设计”一文提出的一个分组密码算法在已知明文攻击和唯密文攻击下都是很容易被破译的,而且在知道加密变换的条件下,很容易利用分割攻击方法求出该分组密码的密钥。此外,基于Logistic映射的混沌序列的相邻值之间的相互制约性,以及该混沌序列的前若干值对初值的低位比特不敏感。

关键词: 混沌序列     分组密码     移位密码     唯密文攻击     已知明文攻击     分割攻击    

潜运沉管建闸方法

周君亮

《中国工程科学》 2000年 第2卷 第11期   页码 78-83

摘要:

潜运沉管建闸适用在航运发达的顺直河道上建设水工建筑物。闸位取在原来航道上,闸室和闸门口径可以与航道等宽,运行期不碍航;闸室的钢筋混凝土的浇筑,预埋、闸门和启闭设备的安装和调试等都可在预制场内完成;预制场灌水后,确定闸身潜运时的有效质量和底板底高程,使潜运及在航道内的定位工作十分简便;可以水上拆装和动水开关闸门;施工风险小,施工期短,临时工程少,工程造价省。

关键词: 潜运沉管     建闸方法     水上拆装闸门    

社交媒体的理论——哲学视角 Article

齐佳音, Emmanuel Monoda, 方滨兴, 邓士昌

《工程(英文)》 2018年 第4卷 第1期   页码 94-102 doi: 10.1016/j.eng.2018.02.009

摘要:
虽然已经有不少理论应用于信息系统(information system, IS)领域的社交媒体研究,但是从哲学角度系统探讨社交媒体理论基础的研究还是比较少的。本文以人与世界的关系以及人与他人的关系两个维度构建了分析社交网络用户行为的哲学理论框架。人与世界的关系维度是以笛卡尔的理性理论和海德格尔的历史性理论为基础的;人与他人的关系维度是以工具主义和“此在”思想为基础的。这个哲学框架可以帮助我们比较社交媒体研究中的几个本原理论:戈夫曼的自我呈现理论、布迪厄的社会资本理论、萨特的存在投射理论和海德格尔的“此在”理论。本文通过“人与世界的关系- 人与他人的关系”这个哲学框架,来解析这四种理论在理解社交媒体用户行为方面的效能。与此同时,研究将这四种理论的效能与IS 研究中的已有的实证研究相比较,发现虽然有些解读与实证研究的结果相匹配,但是还有一些解读尚未被实证研究,这应该是未来研究的方向。

关键词: 社交媒体     生活世界     对他人的考虑     理性     历史性     工具主义     &ldquo     此在&rdquo     自我呈现    

智能城市评价指标体系(City IQ Evaluation System): 研制过程与应用 Review

吴志强,潘云鹤,叶启明,孔翎聿

《工程(英文)》 2016年 第2卷 第2期   页码 196-211 doi: 10.1016/J.ENG.2016.02.009

摘要:

本文对全球38组现有的智能城市评价指标体系进行了系统的梳理分析后,依据体系建构、方法与指标选取等方面的特点,详细剖析了38组现有系统的二级指标和三级指标,以此归类分析后,确定智能城市评价指标体系(City IQ Evaluation System) 的通用基础。通过聚类分析,得到5个维度。依托中国工程院、德国工程院、瑞典皇家工程院、住房和城乡建设部规划管理中心、国务院发展研究中心等在内的共14个单位的275位专家,通过指标筛选、指标调整和数据标准化处理,完成了City IQ Evaluation System-1.0 基础版本的研制。并通过对指标数据源更普适、开放、动态的调整,得到了改进后的City IQ Evaluation System-2.0版本,引入IQ测评的偏差测智法得到了City IQ Evaluation System-3.0版本。研究团队基于City IQ Evaluation System对全球41个智能城市进行多轮测评。综合来看,City IQ Evaluation System 系列评价指标体系的特点包括:以智能生命体理论作支撑,以更普适、开放、动态的数据源形成指标,并以IQ 测评的思想和方法提升City IQEvaluation System 的灵敏性和准确性。

关键词: 智能城市     评价体系     开放数据     城市生命     智能度    

标题 作者 时间 类型 操作

Being good or being known: International reputation of high-speed railway enterprises

期刊论文

What have we known so far about microplastics in drinking water treatment? A timely review

期刊论文

关于就矿找矿论的几个问题

朱训

期刊论文

Well-being analysis of GSU transformer insulation incorporating the impact on power generation using

Alagarsamy KRISHNAVEL, Dusmata Kumar MOHANTA, M. Jaya Bharata REDDY

期刊论文

What have we known so far for fluorescence staining and quantification of microplastics: A tutorial review

Shengdong Liu, Enxiang Shang , Jingnan Liu , Yining Wang , Nanthi Bolan , M.B. Kirkham , Yang Li

期刊论文

stimuli, different responses: a pilot study assessing air pollution visibility impacts on emotional well-being

期刊论文

Evidence chain-based causality identification in herb-induced liver injury: exemplification of a well-known

null

期刊论文

一个基于混沌的分组密码算法的分析

金晨辉

期刊论文

潜运沉管建闸方法

周君亮

期刊论文

社交媒体的理论——哲学视角

齐佳音, Emmanuel Monoda, 方滨兴, 邓士昌

期刊论文

智能城市评价指标体系(City IQ Evaluation System): 研制过程与应用

吴志强,潘云鹤,叶启明,孔翎聿

期刊论文