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Development of Web Accessibility: Policies, Theories and Apporoaches
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作者 Xiaoming Zeng 《中国康复理论与实践》 CSCD 2006年第9期762-767,共6页
The article is intended to introduce the readers to the concept and background of Web accessibility in the United States. I will first discuss different definitions of Web accessibility. The beneficiaries of accessibl... The article is intended to introduce the readers to the concept and background of Web accessibility in the United States. I will first discuss different definitions of Web accessibility. The beneficiaries of accessible Web or the sufferers from inaccessible Web will be discussed based on the type of disability. The importance of Web accessibility will be introduced from the perspectives of ethical, demographic, legal, and financial importance. Web accessibility related standards and legislations will be discussed in great detail. Previous research on evaluating Web accessibility will be presented. Lastly, a system for automated Web accessibility transformation will be introduced as an alternative approach for enhancing Web accessibility. 展开更多
关键词 WEB accessibility INTERNET DISABILITY
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基于大数据的继电保护运维管理系统的设计与实现 被引量:4
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作者 戴志辉 耿宏贤 +3 位作者 刘媛 吴道钰 刘悦 杨鑫 《电测与仪表》 北大核心 2025年第1期80-88,共9页
在双碳背景下,促进清洁能源消纳与碳减排已成为电网发展的重要目标。提出了一种优化方法,考虑可再生能源不确定性与系统功率储备进行系统调度。在预测误差分析的基础上,提出了一种基于负荷损失概率的评估方法,以确定系统运行储备功率。... 在双碳背景下,促进清洁能源消纳与碳减排已成为电网发展的重要目标。提出了一种优化方法,考虑可再生能源不确定性与系统功率储备进行系统调度。在预测误差分析的基础上,提出了一种基于负荷损失概率的评估方法,以确定系统运行储备功率。将系统运营成本和二氧化碳排放量建模为优化目标。优化过程包括两个阶段,在第一阶段优化中利用混合整数线性规划方法进行确定性优化,生成具有规定功率储备要求的发电机组组合。在第二阶段优化中考虑预测不确定性,对运行计划进行调整,使用可控发电机来处理预测偏差。将不同方法下可用运行储备功率、成本和二氧化碳排放量在仿真中进行了对比。与传统大数据技术及智能电网的发展为继电保护系统历史数据进行深层次挖掘提供了支撑,以此为基础研究了基于大数据的继电保护运维管理系统。文章针对基于大数据的继电保护运维管理系统进行设计,详细阐述了系统架构、数据库设计、系统功能模块、系统实现。系统在原始数据预处理的基础上进行数据可视化,从统计分析和动态分析两个角度对保护设备进行评估,实现了设备失效数据的统计计算、设备缺陷关联性分析、运行水平评估以及设备状态检修功能。系统实现了继电保护设备运维全流程管理,最终服务于继电保护检修工作,能够为运行人员状态检修提供参考,对于减小维修的盲目性、提高检修工作效率具有参考价值。 展开更多
关键词 继电保护 ACCESS数据库 关联规则 可靠度函数 状态检修
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炮射导弹测试系统数据库设计与实现
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作者 王云霞 葛双超 +2 位作者 李杰 高正阳 张林竹 《现代电子技术》 北大核心 2025年第22期71-75,共5页
为了满足炮射导弹自动测试系统的数据库功能需求,基于LabWindows/CVI虚拟仪器平台和Access数据库设计一个高效且通用的数据库管理系统。该系统旨在优化测试数据的存储、管理和分析流程,以提升测试效率和数据准确性。首先进行数据库需求... 为了满足炮射导弹自动测试系统的数据库功能需求,基于LabWindows/CVI虚拟仪器平台和Access数据库设计一个高效且通用的数据库管理系统。该系统旨在优化测试数据的存储、管理和分析流程,以提升测试效率和数据准确性。首先进行数据库需求分析;随后设计整体架构和表结构,并实现平台与Access数据库之间的通信;最后,开发了用户管理、数据检索、阈值设置和参数分析等核心功能模块。在实际应用中,该数据库管理系统针对炮射导弹的自动测试展现出了良好的性能,能够有效整合和管理大量的测试数据,不仅满足了测试的基本需求,还具备一定的通用性和可扩展性,为未来可能的系统升级和功能扩展提供了便利,为军事领域的数据管理奠定了坚实的基础。 展开更多
关键词 炮射导弹 自动测试系统 ACCESS数据库 LABWINDOWS/CVI 数据管理 架构设计 表设计
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Call for Papers from Agricultural Products Processing and Storage
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《食品科学》 北大核心 2025年第20期I0022-I0022,共1页
Agricultural Products Processing and Storage(ISSN 3059-4510,Owner:Hunan Academy of Agricultural Sciences,China.Production and hosting:Springer Nature)is an international,peer-reviewed open access journal with the aim ... Agricultural Products Processing and Storage(ISSN 3059-4510,Owner:Hunan Academy of Agricultural Sciences,China.Production and hosting:Springer Nature)is an international,peer-reviewed open access journal with the aim to offer a platform for the rapid dissemination of signifi cant,novel,and high-impact research in the fi elds of agricultural product processing science,technology,engineering,and nutrition.Additionally,supplemental issues are curated and published to facilitate in-depth discussions on special topics. 展开更多
关键词 NUTRITION SCIENCE agricultural products open access journal agricultural products processing STORAGE technology engineering
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Call for Papers from Agricultural Products Processing and Storage
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《肉类研究》 北大核心 2025年第10期I0017-I0017,共1页
Agricultural Products Processing and Storage(ISSN 3059-4510,Owner:Hunan Academy of Agricultural Sciences,China.Production and hosting:Springer Nature)is an international,peer-reviewed open access journal with the aim ... Agricultural Products Processing and Storage(ISSN 3059-4510,Owner:Hunan Academy of Agricultural Sciences,China.Production and hosting:Springer Nature)is an international,peer-reviewed open access journal with the aim to offer a platform for the rapid dissemination of signifi cant,novel,and high-impact research in the fi elds of agricultural product processing science,technology,engineering,and nutrition.Additionally,supplemental issues are curated and published to facilitate in-depth discussions on special topics. 展开更多
关键词 NUTRITION SCIENCE agricultural products open access journal agricultural products processing STORAGE technology engineering
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Call for Papers from Agricultural Products Processing and Storage
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《肉类研究》 北大核心 2025年第11期I0017-I0017,共1页
Agricultural Products Processing and Storage(ISSN 3059-4510,Owner:Hunan Academy of Agricultural Sciences,China.Production and hosting:Springer Nature)is an international,peer-reviewed open access journal with the aim ... Agricultural Products Processing and Storage(ISSN 3059-4510,Owner:Hunan Academy of Agricultural Sciences,China.Production and hosting:Springer Nature)is an international,peer-reviewed open access journal with the aim to offer a platform for the rapid dissemination of signifi cant,novel,and high-impact research in the fi elds of agricultural product processing science,technology,engineering,and nutrition.Additionally,supplemental issues are curated and published to facilitate in-depth discussions on special topics. 展开更多
关键词 NUTRITION SCIENCE agricultural products open access journal agricultural products processing STORAGE technology engineering
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Call for Papers from Agricultural Products Processing and Storage
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《肉类研究》 北大核心 2025年第9期I0017-I0017,共1页
Agricultural Products Processing and Storage(ISSN 3059-4510,Owner:Hunan Academy of Agricultural Sciences,China.Production and hosting:Springer Nature)is an international,peer-reviewed open access journal with the aim ... Agricultural Products Processing and Storage(ISSN 3059-4510,Owner:Hunan Academy of Agricultural Sciences,China.Production and hosting:Springer Nature)is an international,peer-reviewed open access journal with the aim to offer a platform for the rapid dissemination of signifi cant,novel,and high-impact research in the fi elds of agricultural product processing science,technology,engineering,and nutrition.Additionally,supplemental issues are curated and published to facilitate in-depth discussions on special topics. 展开更多
关键词 NUTRITION SCIENCE agricultural products open access journal agricultural products processing STORAGE technology engineering
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Call for Papers from Journal of Future Foods
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《肉类研究》 北大核心 2025年第7期I0012-I0012,共1页
Journal of Future Foods(ISSN 2772-5669.Owner:Beijing Academy of Food Sciences.Production and Hosting:Elsevier B.V.on behalf of KeAi Communications Co.,Ltd.)is an international,peer-reviewed open access journal belongi... Journal of Future Foods(ISSN 2772-5669.Owner:Beijing Academy of Food Sciences.Production and Hosting:Elsevier B.V.on behalf of KeAi Communications Co.,Ltd.)is an international,peer-reviewed open access journal belonging to the discipline of food science and technology.The aim of the journal is to report latest research results of high-tech in food science.We welcome submissions that drive the field of food science towards whole food nutrition,intelligence and high technology. 展开更多
关键词 whole food nutritionintelligence high technology high tech open access journal whole food nutrition food science technology INTELLIGENCE
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Call for Papers from Journal of Future Foods
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《食品科学》 北大核心 2025年第9期I0030-I0030,共1页
Journal of Future Foods(ISSN 2772-5669.Owner:Beijing Academy of Food Sciences.Production and Hosting:Elsevier B.V.on behalf of KeAi Communications Co.,Ltd.)is an international,peer-reviewed open access journal belongi... Journal of Future Foods(ISSN 2772-5669.Owner:Beijing Academy of Food Sciences.Production and Hosting:Elsevier B.V.on behalf of KeAi Communications Co.,Ltd.)is an international,peer-reviewed open access journal belonging to the discipline of food science and technology.The aim of the journal is to report latest research results of high-tech in food science.We welcome submissions that drive the field of food science towards whole food nutrition,intelligence and high technology. 展开更多
关键词 whole food nutritionintelligence high technology high tech open access journal whole food nutrition food science technology INTELLIGENCE
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Call for Papers from Journal of Future Foods
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《食品科学》 北大核心 2025年第11期I0015-I0015,共1页
Journal of Future Foods(ISSN 2772-5669.Owner:Beijing Academy of Food Sciences.Production and Hosting:Elsevier B.V.on behalf of KeAi Communications Co.,Ltd.)is an international,peer-reviewed open access journal belongi... Journal of Future Foods(ISSN 2772-5669.Owner:Beijing Academy of Food Sciences.Production and Hosting:Elsevier B.V.on behalf of KeAi Communications Co.,Ltd.)is an international,peer-reviewed open access journal belonging to the discipline of food science and technology.The aim of the journal is to report latest research results of high-tech in food science.We welcome submissions that drive the field of food science towards whole food nutrition,intelligence and high technology. 展开更多
关键词 whole food nutritionintelligence high technology high tech open access journal whole food nutrition food science technology INTELLIGENCE
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Call for Papers from Journal of Future Foods
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《肉类研究》 北大核心 2025年第11期I0011-I0011,共1页
Journal of Future Foods(ISSN 2772-5669.Owner:Beijing Academy of Food Sciences.Production and Hosting:Elsevier B.V.on behalf of KeAi Communications Co.,Ltd.)is an international,peer-reviewed open access journal belongi... Journal of Future Foods(ISSN 2772-5669.Owner:Beijing Academy of Food Sciences.Production and Hosting:Elsevier B.V.on behalf of KeAi Communications Co.,Ltd.)is an international,peer-reviewed open access journal belonging to the discipline of food science and technology.The aim of the journal is to report latest research results of high-tech in food science.We welcome submissions that drive the field of food science towards whole food nutrition,intelligence and high technology. 展开更多
关键词 whole food nutritionintelligence high technology high tech open access journal whole food nutrition food science technology INTELLIGENCE
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Call for Papers from Journal of Future Foods
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《肉类研究》 北大核心 2025年第9期I0011-I0011,共1页
Journal of Future Foods(ISSN 2772-5669.Owner:Beijing Academy of Food Sciences.Production and Hosting:Elsevier B.V.on behalf of KeAi Communications Co.,Ltd.)is an international,peer-reviewed open access journal belongi... Journal of Future Foods(ISSN 2772-5669.Owner:Beijing Academy of Food Sciences.Production and Hosting:Elsevier B.V.on behalf of KeAi Communications Co.,Ltd.)is an international,peer-reviewed open access journal belonging to the discipline of food science and technology.The aim of the journal is to report latest research results of high-tech in food science.We welcome submissions that drive the field of food science towards whole food nutrition,intelligence and high technology. 展开更多
关键词 whole food nutritionintelligence high technology high tech open access journal whole food nutrition food science technology INTELLIGENCE
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Call for Papers from Journal of Future Foods
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《肉类研究》 北大核心 2025年第8期I0017-I0017,共1页
Journal of Future Foods(ISSN 2772-5669.Owner:Beijing Academy of Food Sciences.Production and Hosting:Elsevier B.V.on behalf of KeAi Communications Co.,Ltd.)is an international,peer-reviewed open access journal belongi... Journal of Future Foods(ISSN 2772-5669.Owner:Beijing Academy of Food Sciences.Production and Hosting:Elsevier B.V.on behalf of KeAi Communications Co.,Ltd.)is an international,peer-reviewed open access journal belonging to the discipline of food science and technology.The aim of the journal is to report latest research results of high-tech in food science.We welcome submissions that drive the field of food science towards whole food nutrition,intelligence and high technology. 展开更多
关键词 whole food nutritionintelligence high technology high tech open access journal whole food nutrition food science technology INTELLIGENCE
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Call for Papers from Journal of Future Foods
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《食品科学》 北大核心 2025年第12期I0021-I0021,共1页
Journal of Future Foods(ISSN 2772-5669.Owner:Beijing Academy of Food Sciences.Production and Hosting:Elsevier B.V.on behalf of KeAi Communications Co.,Ltd.)is an international,peer-reviewed open access journal belongi... Journal of Future Foods(ISSN 2772-5669.Owner:Beijing Academy of Food Sciences.Production and Hosting:Elsevier B.V.on behalf of KeAi Communications Co.,Ltd.)is an international,peer-reviewed open access journal belonging to the discipline of food science and technology.The aim of the journal is to report latest research results of high-tech in food science.We welcome submissions that drive the field of food science towards whole food nutrition,intelligence and high technology. 展开更多
关键词 whole food nutritionintelligence high technology high tech open access journal whole food nutrition food science technology INTELLIGENCE
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De novo-design of highly exposed Co−N−C single-atom catalyst for oxygen reduction reaction
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作者 ZHOU Dan ZHU Hongyue +1 位作者 ZHAO Yang LIU Yiming 《燃料化学学报(中英文)》 北大核心 2025年第1期128-137,共10页
The nitrogen-coordinated metal single-atom catalysts(M−N−C SACs)with an ultra-high metal loading synthetized by direct high-temperature pyrolysis have been widely reported.However,most of metal single atoms in these c... The nitrogen-coordinated metal single-atom catalysts(M−N−C SACs)with an ultra-high metal loading synthetized by direct high-temperature pyrolysis have been widely reported.However,most of metal single atoms in these catalysts were buried in the carbon matrix,resulting in a low metal utilization and inaccessibility for adsorption of reactants during the catalytic process.Herein,we reported a facile synthesis based on the hard-soft acid-base(HSAB)theory to fabricate Co single-atom catalysts with highly exposed metal atoms ligated to the external pyridinic-N sites of a nitrogen-doped carbon support.Benefiting from the highly accessible Co active sites,the prepared Co−N−C SAC exhibited a superior oxygen reduction reactivity comparable to that of the commercial Pt/C catalyst,showing a high turnover frequency(TOF)of 0.93 e^(−)·s^(-1)·site^(-1)at 0.85 V vs.RHE,far exceeding those of some representative SACs with a ultra-high metal content.This work provides a rational strategy to design and prepare M−N−C single-atom catalysts featured with high site-accessibility and site-density. 展开更多
关键词 hard-soft acid-base Co−N−C single-atom catalyst highly accessible active sites oxygen reduction reaction
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Genetics of biochemical attributes regulating morpho-physiology of upland cotton under high temperature conditions 被引量:1
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作者 MAJEED Sajid CHAUDHARY Muhammad Tanees +7 位作者 MUBARIK Muhammad Salman RANA Iqrar Ahmad SHABAN Muhammad TAN Daniel KY JIA Yinhua DU Xiongming HINZE Lori AZHAR Muhammad Tehseen 《Journal of Cotton Research》 CAS 2024年第1期29-44,共16页
Background Cotton is a strategically important fibre crop for global textile industry.It profoundly impacts several countries’industrial and agricultural sectors.Sustainable cotton production is continuously threaten... Background Cotton is a strategically important fibre crop for global textile industry.It profoundly impacts several countries’industrial and agricultural sectors.Sustainable cotton production is continuously threatened by the unpre-dictable changes in climate,specifically high temperatures.Breeding heat-tolerant,high-yielding cotton cultivars with wide adaptability to be grown in the regions with rising temperatures is one of the primary objectives of modern cotton breeding programmes.Therefore,the main objective of the current study is to figure out the effective breed-ing approach to imparting heat tolerance as well as the judicious utilization of commercially significant and stress-tolerant attributes in cotton breeding.Initially,the two most notable heat-susceptible(FH-115 and NIAB Kiran)and tolerant(IUB-13 and GH-Mubarak)cotton cultivars were spotted to develop filial and backcross populations to accom-plish the preceding study objectives.The heat tolerant cultivars were screened on the basis of various morphological(seed cotton yield per plant,ginning turnout percentage),physiological(pollen viability,cell membrane thermostabil-ity)and biochemical(peroxidase activity,proline content,hydrogen peroxide content)parameters.Results The results clearly exhibited that heat stress consequently had a detrimental impact on every studied plant trait,as revealed by the ability of crossing and their backcross populations to tolerate high temperatures.However,when considering overall yield,biochemical,and physiological traits,the IUB-13×FH-115 cross went over particularly well at both normal and high temperature conditions.Moreover,overall seed cotton yield per plant exhibited a posi-tive correlation with both pollen viability and antioxidant levels(POD activity and proline content).Conclusions Selection from segregation population and criteria involving pollen viability and antioxidant levels concluded to be an effective strategy for the screening of heat-tolerant cotton germplasms.Therefore,understanding acquired from this study can assist breeders identifying traits that should be prioritized in order to develop climate resilient cotton cultivars. 展开更多
关键词 ACCESSIONS BIOCHEMICAL BREEDING Cotton Generation mean analysis Heat stress
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Ultra reliability and massive connectivity provision in integrated internet of military things(IoMT)based on tactical datalink 被引量:1
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作者 Li Bing Yating Gu +4 位作者 Lanke Hu Li Bowen Yang Lihua Jue Wang Yue Yin 《Defence Technology(防务技术)》 SCIE EI CAS CSCD 2024年第3期386-398,共13页
One of the major challenges arising in internet of military things(IoMT)is accommodating massive connectivity while providing guaranteed quality of service(QoS)in terms of ultra-high reliability.In this regard,this pa... One of the major challenges arising in internet of military things(IoMT)is accommodating massive connectivity while providing guaranteed quality of service(QoS)in terms of ultra-high reliability.In this regard,this paper presents a class of code-domain nonorthogonal multiple accesses(NOMAs)for uplink ultra reliable networking of massive IoMT based on tactical datalink such as Link-16 and joint tactical information distribution system(JTIDS).In the considered scenario,a satellite equipped with Nr antennas servers K devices including vehicles,drones,ships,sensors,handset radios,etc.Nonorthogonal coded modulation,a special form of multiple input multiple output(MIMO)-NOMA is proposed.The discussion starts with evaluating the output signal to interference-plus-noise(SINR)of receiver filter,leading to the unveiling of a closed-form expression for overloading systems as the number of users is significantly larger than the number of devices admitted such that massive connectivity is rendered.The expression allows for the development of simple yet successful interference suppression based on power allocation and phase shaping techniques that maximizes the sum rate since it is equivalent to fixed-point programming as can be proved.The proposed design is exemplified by nonlinear modulation schemes such as minimum shift keying(MSK)and Gaussian MSK(GMSK),two pivotal modulation formats in IoMT standards such as Link-16 and JITDS.Numerical results show that near capacity performance is offered.Fortunately,the performance is obtained using simple forward error corrections(FECs)of higher coding rate than existing schemes do,while the transmit power is reduced by 6 dB.The proposed design finds wide applications not only in IoMT but also in deep space communications,where ultra reliability and massive connectivity is a keen concern. 展开更多
关键词 Satellite network Deep space communications Internet of military things Non-orthogonal multiple access MIMO LINK-16 JITDS
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基于深度强化学习的IRS辅助NOMA-MEC通信资源分配优化 被引量:1
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作者 方娟 刘珍珍 +1 位作者 陈思琪 李硕朋 《北京工业大学学报》 CAS CSCD 北大核心 2024年第8期930-938,共9页
为了解决无法与边缘服务器建立直连通信链路的盲区边缘用户卸载任务的问题,设计了一个基于深度强化学习(deep reinforcement learning, DRL)的智能反射面(intelligent reflecting surface, IRS)辅助非正交多址(non-orthogonal multiple ... 为了解决无法与边缘服务器建立直连通信链路的盲区边缘用户卸载任务的问题,设计了一个基于深度强化学习(deep reinforcement learning, DRL)的智能反射面(intelligent reflecting surface, IRS)辅助非正交多址(non-orthogonal multiple access, NOMA)通信的资源分配优化算法,以获得由系统和速率和能源效率(energy efficiency, EE)加权的最大系统收益,从而实现绿色高效通信。通过深度确定性策略梯度(deep deterministic policy gradient, DDPG)算法联合优化传输功率分配和IRS的反射相移矩阵。仿真结果表明,使用DDPG算法处理移动边缘计算(mobile edge computing, MEC)的通信资源分配优于其他几种对比实验算法。 展开更多
关键词 非正交多址(non-orthogonal multiple access NOMA) 智能反射面(intelligent reflecting surface IRS) 深度确定性策略梯度(deep deterministic policy gradient DDPG)算法 移动边缘计算(mobile edge computing MEC) 能源效率(energy efficiency EE) 系统收益
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《水土保持通报》2024年入选的主要数据库及CSCD引证指标
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作者 《水土保持通报》编辑部 《水土保持通报》 CSCD 北大核心 2024年第4期448-448,共1页
目前《水土保持通报》入选的国内数据库等主要有:《中国科学引文数据库来源期刊》《中文核心期刊要目总览》《中国知识资源总库·科技精品期刊库》《中国科技核心期刊》《世界影响力指数(WJCI)报告》;国际数据库主要有:《瑞典DOAJ (... 目前《水土保持通报》入选的国内数据库等主要有:《中国科学引文数据库来源期刊》《中文核心期刊要目总览》《中国知识资源总库·科技精品期刊库》《中国科技核心期刊》《世界影响力指数(WJCI)报告》;国际数据库主要有:《瑞典DOAJ (Directory of Open Access Journals)》《美国EBSCO学术数据库》《美国GeoRef数据库》《波兰哥白尼索引精选数据库(ICI Journals Master List)》《英国欧洲学术出版中心数据库(EuroPub)》《国际应用生物科学中心数据库(CABA)》《美国乌利希期刊指南(Ulrich's Directory)》《Research 4 life》《中日科技振兴机构(JST)中文数据库》。 展开更多
关键词 数据库 DIRECTORY 乌利希期刊指南 OPEN 科技振兴 ACCESS 科技精品
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《水土保持通报》2024年入选的主要数据库及CSCD引证指标
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作者 《水土保持通报》 CSCD 北大核心 2024年第3期F0004-F0004,共1页
目前《水土保持通报》入选的国内数据库等主要有:《中国科学引文数据库来源期刊》《中文核心期刊要目总览》《中国知识资源总库·科技精品期刊库》《中国科技核心期刊》《世界影响力指数(WJCI)报告》;国际数据库主要有:《瑞典DOAJ (... 目前《水土保持通报》入选的国内数据库等主要有:《中国科学引文数据库来源期刊》《中文核心期刊要目总览》《中国知识资源总库·科技精品期刊库》《中国科技核心期刊》《世界影响力指数(WJCI)报告》;国际数据库主要有:《瑞典DOAJ (Directory of Open Access Journals)》《美国EBSCO学术数据库》《美国GeoRef数据库》《波兰哥白尼索引精选数据库(ICI Journals Master List)》《英国欧洲学术出版中心数据库(EuroPub)》《国际应用生物科学中心数据库(CABA)》《美国乌利希期刊指南(Ulrich's Directory)》《Research 4 life》《中日科技振兴机构(JST)中文数据库》。 展开更多
关键词 数据库 DIRECTORY 乌利希期刊指南 OPEN 科技振兴 ACCESS 科技精品
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