期刊文献+
共找到340,105篇文章
< 1 2 250 >
每页显示 20 50 100
质量视角中的智能制造 预览
1
作者 谢克强 杨春晖 《电子产品可靠性与环境试验》 2019年第A01期190-192,共3页
智能制造包括智能产品、智能生产和智能服务三大功能系统,其本质是解决复杂系统的不确定性,其发展过程也是质量不断提升的过程0以质量为着力点是推动智能制造落地的有效方式之一,在这个过程中软件发挥了重要的作用。以质量视角,从产品... 智能制造包括智能产品、智能生产和智能服务三大功能系统,其本质是解决复杂系统的不确定性,其发展过程也是质量不断提升的过程0以质量为着力点是推动智能制造落地的有效方式之一,在这个过程中软件发挥了重要的作用。以质量视角,从产品质量、生产质量和服务质量等方面对智能制造进行了阐述。 展开更多
关键词 质量 产品质量 生产质量 服务质量 智能制造 软件
在线阅读 下载PDF
A Systematic Review and Meta-Analysis of Water Quality Indices 预览
2
作者 Kanga Idé Soumaila Albachir Seydou Niandou +4 位作者 Mustapha Naimi Chikhaoui Mohamed Keith Schimmel Stephanie Luster-Teasley Naeem Nizar Sheick 《农业科学与技术:B》 2019年第1期1-14,共14页
Water quality indices (WQI) are useful tools for indicating the suitability of water for an expected use. However, they can suffer from some problems. The objective of this paper was to analyze the development of WQI ... Water quality indices (WQI) are useful tools for indicating the suitability of water for an expected use. However, they can suffer from some problems. The objective of this paper was to analyze the development of WQI to determine which parameters are used in water quality assessment and to discuss the characteristics of WQI. To screen articles on WQI, the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) method is applied to include or exclude articles. Four necessary steps are needed to design WQI: parameter selection, standardization, weighting and aggregation. A set of six methods of aggregations of sub-indices are identified: the arithmetic mean, the geometric mean, the root square, the logarithmic function, the fuzzy inference and the minimum operator. The problems encountered for the overall index are different according to the form of aggregation. They are eclipsing, ambiguity, rigidity or flexibility, adaptability and compensation. The chemical parameters (70%) are the most used in the development of WQI with the physical parameters used at 24% and the biological parameters at 6%. Dissolved oxygen (DO, 87%), total coliforms (87%), biological oxygen demand (BOD, 73%), pH (73%), temperature (67%), turbidity (60%), ammonia (53%), ammonium (47%) and total dissolved solids (47%) are the most commonly used parameters for water quality assessment. 展开更多
关键词 WATER QUALITY indices WATER QUALITY PARAMETERS WATER QUALITY assessment REVIEW META-ANALYSIS
在线阅读 下载PDF
Evaluation of the Effects of Corporate Governance on Financial Reporting Quality 预览
3
作者 Saime?nce Gülsen Cavus 《现代会计与审计:英文版》 2019年第8期385-395,共11页
Corporate governance is designed to stimulate the investment environment and to create a stable financial situation in the capital markets by increasing the level of reliability,transparency,and accountability at the ... Corporate governance is designed to stimulate the investment environment and to create a stable financial situation in the capital markets by increasing the level of reliability,transparency,and accountability at the firm level.This study aims to examine whether corporate governance leads to higher quality financial reporting.This research has been performed using companies listed on Borsastanbul(BIST).For this purpose,two samples from the publicly held companies on BIST,which are included in the Corporate Governance Index and which are not included in this index,have been formed.Thus,we examined whether there is any difference between the financial reporting quality of the companies listed in Borsastanbul Corporate Governance Index and the financial reporting quality of the enterprises that are not included in this index.Since the quality of financial reporting is a multi-dimensional concept,it can be evaluated by different measurement methods focusing on different dimensions in the literature.One of these approaches used to measure the quality of financial reporting is the quality of earnings.The evaluation of the financial reporting quality of the enterprises included in the BIST Corporate Governance Index and the enterprises not included in the index were evaluated through different methods to compare two different samples in the context of the earnings quality approach.Panel data analysis was used to evaluate the financial reporting quality of the two samples by means of earnings quality methods.The data related to the models used in the assessment of financial reporting quality were obtained from the Public Disclosure Platform(KAP)and Equity RT database.The research covers 72 enterprises,36 of which are in the Corporate Governance Index and 36 of which are not in the Corporate Governance Index. 展开更多
关键词 financial REPORTING QUALITY CORPORATE governance ACCOUNTING QUALITY EARNINGS QUALITY panel data analysis
在线阅读 下载PDF
Predicting User Satisfaction of Non-volitional Enterprise Systems: An Example From Telecomunications 预览
4
作者 Paul A. J. Mason Akaret Tangsuwan 《中国经济评论:英文版》 2019年第1期1-13,共13页
The rapid pace of technological change has seen information and communication technologies become the digital backbone of developed nations’ economies and a pre-requisite for global trade. Some enterprise systems are... The rapid pace of technological change has seen information and communication technologies become the digital backbone of developed nations’ economies and a pre-requisite for global trade. Some enterprise systems are however more than mere facilitators, they provide the bedrock without which organizations could not function;we term these mandatory systems “non-volitional”(NVS). With hyper-growth in demand for connectivity, telecommunications are typical of sectors where NVS shape the fiercely competitive landscape. Among them, Billing & Revenue Management Systems (BRMS) are a form of credit, providers deliver a service and subscribers later pay for that service. As such, they are “business critical”, meaning failures may affect an organization’s ability to conduct its core business. Failures also impact user satisfaction, a key measure of information systems success. However, relatively few studies empirically test this notion;fewer still evaluate it at organizational (rather than individual) level, while there is a dearth of literature investigating non-volitional systems and, to the best of our knowledge, none whatsoever consider ways of predicting user satisfaction for BRMS. According to a renowned and widely cited conceptual model, user satisfaction is influenced by information, system, and service quality respectively. To test this theory for telecoms BRMS, we applied structural equation modelling to investigate which of these dimensions has the most effect. The results indicate that information quality, system quality, service quality, and user satisfaction are all valid measures of BRMS success. Hypothesized relationships between the four success dimensions were significantly substantiated. The study also identified five measures of information quality, four measures of system quality, four measures of service quality, and four measures of user satisfaction. Once the proposed model had been successfully validated, we tested the level of significance among user satisfaction and the three quality 展开更多
关键词 BILLING & REVENUE Management SYSTEMS success non-volitional SYSTEMS organizational impact user satisfaction measures information QUALITY system QUALITY service QUALITY
在线阅读 下载PDF
基于万达综合体施工质量标准化的探究 预览
5
作者 杨春 张春晓 王聪 《工程建设与设计》 2019年第3期263-265,共3页
通过对"质量"含义的剖析、外延,引出质量标准化概念,并初步进行了定义。结合自身实践经验对如何实施质量标准化和质量标准化在施工现场的管理思路进行探究,并对施工现场质量标准化进行总结、提炼。论文针对质量标准化给出了1... 通过对"质量"含义的剖析、外延,引出质量标准化概念,并初步进行了定义。结合自身实践经验对如何实施质量标准化和质量标准化在施工现场的管理思路进行探究,并对施工现场质量标准化进行总结、提炼。论文针对质量标准化给出了1种思路,值得相关部门及人员借鉴参考。 展开更多
关键词 质量 标准化工法 质量标准化基本要求 质量标准化方法
在线阅读 下载PDF
基本公共服务质量:概念界定、构成要素与特质属性 预览 被引量:1
6
作者 陈朝兵 《首都经济贸易大学学报》 CSSCI 北大核心 2019年第3期65-71,共7页
基本公共服务质量作为一个学术概念早已进入官方话语体系,但学术界至今仍缺乏对其的专门界定与深入解读。立足基本公共服务和质量的内涵,基本公共服务质量可确切定义为"基本公共服务提供过程及结果中的固有特性满足相关规定要求与... 基本公共服务质量作为一个学术概念早已进入官方话语体系,但学术界至今仍缺乏对其的专门界定与深入解读。立足基本公共服务和质量的内涵,基本公共服务质量可确切定义为"基本公共服务提供过程及结果中的固有特性满足相关规定要求与社会公众要求的程度"。由该定义,基本公共服务质量包含基本公共服务的质量特性、质量要求和质量特性满足质量要求的程度三个要素。由质量本身的特性决定,基本公共服务质量的特性体现为合规性、合需性、客观性、主观性、相对性和发展性。 展开更多
关键词 基本公共服务 质量 质量特性 质量要求
在线阅读 免费下载
Quality Markers of Traditional Chinese Medicine:Concept,Progress,and Perspective 预览
7
作者 Yazhuo Li Ying Xie +3 位作者 Yufei He Wenbin Hou Maoliang Liao Changxiao Liu 《工程(英文)》 2019年第5期888-894,共7页
As the most important complementary medication against a variety of diseases,traditional Chinese medicines(TCMs)have been extensively applied over thousands of years.Current quality control of herbal medicines,however... As the most important complementary medication against a variety of diseases,traditional Chinese medicines(TCMs)have been extensively applied over thousands of years.Current quality control of herbal medicines,however,is in great dispute.Unlike chemical drugs,which have clear and validated quality standards,the content of only one(or a few)compounds of many herbs and preparations is currently assessed as an indicator of quality,even though the assessed compound(s)is neither closely associated with the efficacy nor representative of the medicine as a whole.Based on the clinical use,compatibility of multiple component prescriptions,and manufacturing process of TCM,the new concept of a TCM quality marker that was proposed in previous work is discussed further here.In addition,practical technological approaches are described for the qualitative analysis and quantification of TCMs including herbs,processed products,and preparations,which lead to the discovery and identification of specific chemicals as quality markers and new quality control patterns.The progress that has been made in TCM quality control is also addressed.This work provides useful information for the quality control of herbal medicines in the future. 展开更多
关键词 Traditional Chinese medicine Quality marker Quality control
在线阅读 免费下载
学科评估视角下地方高校研究生培养质量体系的构建 预览
8
作者 刘琼玉 钱同惠 《现代教育科学》 2019年第4期142-145,151共5页
本文对标全国第四轮学科评估指标体系,系统分析了“人才培养质量”一级指标内涵。针对地方高校研究生培养中存在的问题,从加强导师队伍建设、建立校企与校校多元协同育人模式、规范培养过程管理、建立长效的研究生教育质量评价反馈机制... 本文对标全国第四轮学科评估指标体系,系统分析了“人才培养质量”一级指标内涵。针对地方高校研究生培养中存在的问题,从加强导师队伍建设、建立校企与校校多元协同育人模式、规范培养过程管理、建立长效的研究生教育质量评价反馈机制等方面,提出构建基于全国学科评估视角的地方高校研究生培养质量保障体系的建议,以期提高地方高校研究生培养质量,促进地方高校研究生教育的健康可持续性发展。 展开更多
关键词 地方高校 人才培养质量 学科评估视角 质量保障体系
在线阅读 下载PDF
Enhancement of Stabilization Control in Remote Robot System with Force Feedback 预览
9
作者 Pingguo Huang Takanori Miyoshi Yutaka Ishibashi 《通讯、网络与系统学国际期刊(英文)》 2019年第7期99-111,共13页
In this paper, we deal with a remote robot system in which a user can operate an industrial robot with a force sensor at a remote location by using a haptic interface device. We apply a method using the wave filter to... In this paper, we deal with a remote robot system in which a user can operate an industrial robot with a force sensor at a remote location by using a haptic interface device. We apply a method using the wave filter together with the phase control filter which was previously proposed by the authors to the remote robot system for stabilization control. We also propose a method to enhance the haptic quality. By experiment, we demonstrate the effectiveness of the proposed method. We compare the proposed method with the conventional method quantitatively and clarify which domains the proposed method is applied to more effectively. 展开更多
关键词 REMOTE ROBOT System STABILIZATION Control Force FEEDBACK Quality Experiment
在线阅读 免费下载
新疆地区栽培5种甜瓜营养成分比较分析 预览
10
作者 古娜斯·叶尔肯 魏征 +5 位作者 王豪杰 朱靖蓉 华震宇 孙涛 陈洁 王成 《食品研究与开发》 CAS 北大核心 2019年第6期115-119,125共6页
对新疆栽培甜瓜的品质进行分析及评价,分析比较新疆栽培的奎克拜热、辟山、风味8号、绿肉伽师瓜及金龙5个品种甜瓜的营养成分(糖类物质、矿物质、氨基酸及其有机酸含量)。结果表明,5个不同品种甜瓜基本营养成分含量差异显著。绿肉伽师... 对新疆栽培甜瓜的品质进行分析及评价,分析比较新疆栽培的奎克拜热、辟山、风味8号、绿肉伽师瓜及金龙5个品种甜瓜的营养成分(糖类物质、矿物质、氨基酸及其有机酸含量)。结果表明,5个不同品种甜瓜基本营养成分含量差异显著。绿肉伽师瓜的水分、蛋白质含量最高,分别为148.66g/100g、1.36%。风味8号的水分、蛋白质含量最低,分别为73.65g/100g、0.80%。金龙的可溶性固形物、总糖含量最高,分别为12.60%、8.40g/100g。奎克拜热可溶性固形物、总糖含量最低,分别为8.30%、5.60g/100g。风味8号总酸含量最高,为2.56g/kg,金龙总酸含量最低,为0.68g/kg;5个不同品种甜瓜中主要的糖类物质为果糖、葡萄糖和蔗糖,未检出麦芽糖。果糖、葡萄糖和蔗糖的含量差异显著;5个不同品种甜瓜钙、钾、镁、磷、钠、铁、锌、铜、锰含量差异显著,而硒含量差异不显著;5个不同品种甜瓜的氨基酸总和量差异显著,其含量为绿肉伽师瓜>金龙>辟山>奎克拜热>风味8号。在各品种甜瓜中除丙氨酸含量差异显著外,其余各氨基酸的含量差异不显著;5个不同品种甜瓜中未检出丁二酸和己二酸,主要的有机酸为柠檬酸,其次为苹果酸、酒石酸、富马酸。 展开更多
关键词 甜瓜 品种 品质 营养成分 显著差异
在线阅读 下载PDF
Confounders in Adenoma Detection at Initial Screening Colonoscopy: A Factor in the Assessment of Racial Disparities as a Risk for Colon Cancer 预览
11
作者 Yakira David Lorenzo Ottaviano +15 位作者 Jihye Park Sadat Iqbal Michelle Likhtshteyn Samir Kumar Helen Lyo Ayanna E. Lewis Brandon E. Lung Jesse T. Frye Li Huang Ellen Li Jie Yang Laura Martello Shivakumar Vignesh Joshua D. Miller Michele Follen Evan B. Grossman 《癌症治疗(英文)》 2019年第4期269-289,共21页
Background and Aims: The incidence and mortality of colorectal cancer is persistently highest in Black/African-Americans in the United States. While access to care, barriers to screening, and poverty might explain the... Background and Aims: The incidence and mortality of colorectal cancer is persistently highest in Black/African-Americans in the United States. While access to care, barriers to screening, and poverty might explain these findings, there in increased interest in examining biological factors that impact the colonic environment. Our group is examining biologic factors that contribute to disparities in development of adenomas prospectively. In preparation for this and to characterize a potential patient population, we conducted a retrospective review of initial screening colonoscopies in a cohort of patients. Methods: A retrospective review was performed on initial average risk screening colonoscopies on patients (age 45 - 75 years) during 2012 at three institutions. Descriptive statistics and multivariable logistic regression models were used to examine the relationship between potential risk factors and the detection of adenomas. Results: Of the 2225 initial screening colonoscopies 1495 (67.2%) were performed on Black/African-Americans and 566 (25.4%) on Caucasians. Multivariable logistic regression revealed that older age, male sex, current smoking and teaching gastroenterologists were associated with higher detection of adenomas and these were less prevalent among Black/African-Americas except for age. Neither race, ethnicity, BMI, diabetes mellitus, HIV nor insurance was associated with adenoma detection. Conclusion: In this sample, there was no association between race and adenoma detection. While this may be due to a lower prevalence of risk factors for adenomas in this sample, our findings were confounded by a lower detection rate by consultant gastroenterologists at one institution. The study allowed us to rectify the problem and characterize patients for future trials. 展开更多
关键词 COLORECTAL Cancer SCREENING ADENOMA Quality
在线阅读 免费下载
Effects of Lactoperoxidase System Activation-Oregano Essential Oilor Chlorine on the Quality of Modified Atmosphere Packaged Fresh-Cut Iceberg Lettuce 预览
12
作者 Ameni Telmoudi Imen Mahmoudi Mnasser Hassouna 《微生物学(英文)》 2019年第6期525-540,共16页
The present work focused on the effects of the Modified Atmosphere Packaging (MAP) 1 (5% O2 and 10% CO2) or 2 (2% O2 and 5% CO2) and the previous addition of Lactoperoxidase System (LPS) and Oregano essential oil or c... The present work focused on the effects of the Modified Atmosphere Packaging (MAP) 1 (5% O2 and 10% CO2) or 2 (2% O2 and 5% CO2) and the previous addition of Lactoperoxidase System (LPS) and Oregano essential oil or chlorine washing on the quality of fresh-cut lettuce during refrigerated storage at +4?C. Our results showed the significant effect of this combined treatment on quality improvement during storage. Thus, mesophilic bacteria was reduced in treated samples compared to those untreated with number which not exceeded the critical of 5 × 107 UFC?g-1 (p 2 and CO2 levels created by both atmosphere were not significantly different between the two treatments (p > 0.05). Brightness of lettuce samples was significantly reduced during storage. Thereafter, the PCA data showed the effect of combined treatment on the preservation of hygienic, physico-chemical and sensory quality up to the 7th day of refrigerated storage of these treated samples. The results obtained draw attention to modified atmosphere packaging lettuce and the addition of bio-preservatives which could be an alternative of choice to replace chlorine to preserve the sanitary quality of green products. 展开更多
关键词 FRESH-CUT LETTUCE Modified ATMOSPHERE LACTOPEROXIDASE System Oregano QUALITY
在线阅读 免费下载
基于未来社会的未来人才探究 预览 被引量:2
13
作者 穆铭 《未来与发展》 2019年第2期68-72,共5页
未来社会是网络化、数据化、智能化的社会,知识、科技快速发展。在这样的社会中究竟需要怎样的人才,这些人才的核心品质有哪些,已经引起了中外学者的深思与研究。本文在展望未来社会、了解"未来人才"国内外已有研究的基础上,... 未来社会是网络化、数据化、智能化的社会,知识、科技快速发展。在这样的社会中究竟需要怎样的人才,这些人才的核心品质有哪些,已经引起了中外学者的深思与研究。本文在展望未来社会、了解"未来人才"国内外已有研究的基础上,参考相关文献,提出未来人才的特征及未来人才多维度的质量标准,初步描绘出适应未来社会的未来人才,并简要论述未来人才的培养。 展开更多
关键词 未来社会 未来人才 特征 质量标准
在线阅读 下载PDF
杀青和初干方式对三峡库区香茶品质与效益的影响 预览
14
作者 陈金磊 肖秀丹 +7 位作者 陈绪敏 倪德江 周敬涛 张德 于松慧 刘璇 陈杰 余志 《中国茶叶加工》 2019年第2期13-18,共6页
研究以三峡库区夏秋茶鲜叶为实验材料,探讨了不同杀青方式和初干方式对香茶品质和效益的影响,对比不同杀青与初干工艺,其中蒸汽杀青、滚筒杀青机初干工艺可以显著提高香茶品质。同时探究了不同杀青方式、初干方式对香茶产率的影响,蒸汽... 研究以三峡库区夏秋茶鲜叶为实验材料,探讨了不同杀青方式和初干方式对香茶品质和效益的影响,对比不同杀青与初干工艺,其中蒸汽杀青、滚筒杀青机初干工艺可以显著提高香茶品质。同时探究了不同杀青方式、初干方式对香茶产率的影响,蒸汽杀青、滚筒杀青机初干制得的正茶率和香茶率均最高,更适合提高三峡库区香茶的总产量与产值。 展开更多
关键词 杀青方式 初干方式 品质 效益 香茶品质
在线阅读 下载PDF
公共体育服务质量:概念界定与影响因素分析 预览
15
作者 袁新锋 张瑞林 +1 位作者 王飞 陈洪鑫 《天津体育学院学报》 CAS CSSCI 北大核心 2019年第3期232-237,共6页
实施质量强国战略,必须把增强人民群众的幸福感作为提高公共服务质量的落脚点。高质量的公共体育服务,是"全民健身"事业的要求,也是"健康中国"战略的支撑。当前,质量引领公共体育服务的趋势日渐清晰,但受制于基础... 实施质量强国战略,必须把增强人民群众的幸福感作为提高公共服务质量的落脚点。高质量的公共体育服务,是"全民健身"事业的要求,也是"健康中国"战略的支撑。当前,质量引领公共体育服务的趋势日渐清晰,但受制于基础理论研究的滞后,实践层面并未展现"质量优位"发展的图景。因此,构建公共体育服务质量管理理论体系成为当务之急,首当其冲就是要解决"是什么"的源头问题,即公共体育服务质量的概念界定,从而为提升公共体育服务质量的后续研究与未来实践找到逻辑起点,随之而来的应该是解决"怎么样"的改进路径问题,即公共体育服务质量影响因素的全面梳理。采用文献资料法、逻辑分析法,将"公共体育服务质量"界定为,政府等公共体育组织提供公共体育服务过程及结果的特质属性满足相关规定要求和社会公众需求的程度。此概念表述,体现了应有的理论呼应与价值导向;厘清了公共体育服务质量、绩效以及满意度的概念边界;兼顾了公共体育服务的特殊性与从属性;顺应了多元互动协同的实践趋势;关注了供给过程的公平性与公共利益的整体性。另外,依据公共体育服务质量概念的靶心指引,从我国公共体育服务自身特性与质量改进要求出发,以机制成熟且运用广泛的公共服务质量管理框架为借鉴,从环境、创新、结果和过程4个维度梳理出公共体育服务质量的影响因素,从而为未来研究确定方向。 展开更多
关键词 公共服务 公共体育服务 质量 公共体育服务质量 概念界定
在线阅读 免费下载
Monitoring and Evaluation of Environmental Quality of the Waters near the Oujiang River Estuary in Wenzou 预览
16
作者 Lin Bo Zhang Haifeng +3 位作者 Yao Dongping Qian Jian Zheng Fangqin Ye Xinrong 《气象与环境研究:英文版》 CAS 2019年第5期74-80,共7页
Based on the monitoring results of environmental quality of the waters near the Oujiang River estuary from 2010 to 2017,the present situation of environmental quality of the waters was analyzed and evaluated.The resul... Based on the monitoring results of environmental quality of the waters near the Oujiang River estuary from 2010 to 2017,the present situation of environmental quality of the waters was analyzed and evaluated.The results showed that pH,DO,COD Mn ,petroleum,and heavy metal (Cu,Pb,Zn,Cd,Hg,As and Cr) content in the waters near the Oujiang River estuary did not exceed the second-class standard of Seawater Quality Standard (GB 3097-1997),while both inorganic nitrogen and reactive phosphate in the waters greatly exceeded the second-class standard.The water quality near the Oujiang River estuary was in an eutrophic state.In terms of sediment quality,the standard index of most evaluation factors except for Cu was smaller than 1,meeting the demands of sediment quality for environmental protection. 展开更多
关键词 WATERS NEAR the Oujiang River ESTUARY Evaluation of environmental QUALITY Characteristics of water QUALITY EUTROPHICATION
在线阅读 下载PDF
Composition of Cachaças Produced from Five Varieties of Sugarcane and the Correlation of the Presence of Dhurrin in the Cane with That of Ethyl Carbamate in the Product 预览
17
作者 Francielli D’Carlos Cravo Wilder Douglas Santiago +10 位作者 Allan da Silva Lunguinho Richard Bispo Barbosa Renan Elan da Silva Oliveira Gabriela Fontes Alvarenga Stephano Daniel Santos Rafaella Hilda Zaniti Souza Ellen Cristina de Souza Katia Julia de Almeida Josefina Aparecida de Souza David Lee Nelson Maria das Gra?as Cardoso 《美国植物学期刊(英文)》 2019年第2期339-350,共12页
The present work sought to characterize the cyanogenic glycoside dhurrin in five sugarcane varieties and to determine its possible relationship with the formation of ethyl carbamate in cachaca. For each variety, metha... The present work sought to characterize the cyanogenic glycoside dhurrin in five sugarcane varieties and to determine its possible relationship with the formation of ethyl carbamate in cachaca. For each variety, methanol, ethyl acetate and hexane extracts were prepared and submitted to thin layer chromatography. Chromatographic spots were revealed with iodine vapors. The physical and chemical parameters of the spirits produced from the five different varieties of sugar cane and by different production processes were within the legal limits. Although not exceeding the limit for ethyl carbamate, a significant variation in the final concentration of this compound was observed for each sample analyzed. The Rf values for the dhurrin standard and for the sugarcane variety SP 83-2847 were equal, similar to those for SP 80-3280 and CTC 11 and different from the Rf values for the RB 86-7515 and IAC 86-2480 samples. 展开更多
关键词 Cachaca Ethyl CARBAMATE Quality GLYCOSIDES CYANIDE Dhurrin
在线阅读 免费下载
Cloud Computing at a Cross Road: Quality and Risks in Higher Education 预览
18
作者 Mohammed Ali 《物联网(英文)》 2019年第3期33-49,共17页
The key determinants of cloud computing provide a convincing argument for HEIs and its stakeholders to adopt the innovation. These benefits reflect the essential quality characteristics of the cloud, such as Broad net... The key determinants of cloud computing provide a convincing argument for HEIs and its stakeholders to adopt the innovation. These benefits reflect the essential quality characteristics of the cloud, such as Broad network Access;Measured Service;On-demand Self-Service;Rapid Elasticity;and Resource Pooling. However, there are also risks associated with the cloud, leading to non-adoption, such as Confidence, Privacy, Security, Surety and Trust. Understanding the impact of these factors can support multiple stakeholders, such as students, lecturers, senior managers and admins in their adoptive decision of CC in their respected institutions. Using the Multiview 3 (MV3) methodology, a research model was proposed to explore the key qualities and risks that determine the adoption or non-adoption of CC by UK HEIs from multiple perspectives. An exploratory qualitative study was conducted on 32 University stakeholders across 2 UK Universities. The findings suggest that security, privacy and trust are the key determinants to non-adoption as participants felt that the cloud cannot fully guarantee the safeguarding of sensitive information. Determinants to cloud adoption include improving relationships between students and teachers via collaborative tools, in addition to proposing cloud apps for mobile devices for accessing virtual learning materials and email securely off-campus. In conclusion, University stakeholders are still at a cross-road when it comes to cloud adoption, but future advances of the cloud may help to steer their decision to adopt this innovative technology given its overwhelming potential. 展开更多
关键词 Cloud Computing HIGHER Education Innovation STAKEHOLDERS QUALITY RISKS
在线阅读 免费下载
Monitoring and Evaluation of Environmental Quality of the Waters near the Feiyun River Estuary in Wenzou in Recent Years 预览
19
作者 Yao Dongping Lin Bo +2 位作者 Zhang Haifeng Zheng Fangqin Ye Xinrong 《气象与环境研究:英文版》 CAS 2019年第4期100-105,109共7页
Based on the monitoring results of environmental quality of the waters near the Feiyun River estuary during 2011-2016, the current situation of environmental quality of the waters was analyzed and evaluated. The resul... Based on the monitoring results of environmental quality of the waters near the Feiyun River estuary during 2011-2016, the current situation of environmental quality of the waters was analyzed and evaluated. The results showed that pH, DO, COD Mn , petroleum, and heavy metals (Cu, Pb, Zn, Cd, Hg, As and Cr) in the waters near the Feiyun River estuary did not exceed the second-class standard of Seawater Quality Standard (GB 3097-1997), while both inorganic nitrogen and reactive phosphate in the waters exceeded the second-class standard obviously. The water quality of the waters near the Feiyun River estuary was in an eutrophic state. In terms of sediment quality, the standard index of most evaluation factors except for Cu was smaller than 1, meeting the demands of sediment quality for environmental protection. 展开更多
关键词 WATERS NEAR the Feiyun River ESTUARY Current situation of environmental QUALITY Evaluation Features of water QUALITY EUTROPHICATION
在线阅读 下载PDF
Complex Sequence Quality Evaluation Model for Concealed Water Supply Pipeline of Prefabricated Construction 预览
20
作者 韩莎莎 陈群 +1 位作者 李杰 戴一璟 《东华大学学报:英文版》 EI CAS 2019年第2期179-186,共8页
The accurate assessment of the quality can materially affect the safety and life of the prefabricated construction.In this paper,we studied the overall module of concealed water supply pipeline,and a new complex seque... The accurate assessment of the quality can materially affect the safety and life of the prefabricated construction.In this paper,we studied the overall module of concealed water supply pipeline,and a new complex sequence quality evaluation model was established.By analyzing the small evaluation index elements of the model,the weight of the larger evaluation index could be deduced.The total quality evaluation score of the overall module could be obtained by calculating the weight value of the evaluation index,and then the quality standard of the overall module could be obtained. 展开更多
关键词 PREFABRICATED construction concealed water supplypipeline overall MODULE COMPLEX SEQUENCE QUALITY EVALUATION model QUALITY EVALUATION system
在线阅读 下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部 意见反馈