At the first working meeting of the 'Key Technical Standard PromotionProject', an important project of the national scientific and technical support plan during the'11th Five Year' held recently in Bei...At the first working meeting of the 'Key Technical Standard PromotionProject', an important project of the national scientific and technical support plan during the'11th Five Year' held recently in Beijing, the first group of 11 research topics for the 'KeyTechnical Standard Promotion Project' was formally introduced. According to Ms. Yu Xinli, who is incharge of the project as Deputy Director of the China National Institute of Standardization, theproject comprises four aspects: the international standards key breakthrough project, the technicalstandards promotion project of adapting technical trade measures, the technical standards innovationproject of basic public welfare, and the technical standard enhancement project of public security.展开更多
According to an announcement made by the Standardization Administration of the PRC (SAC)on March 21, 2007, the organization has given approval to Blue Sky Ecological Agriculture Development Co., Ltd., for a trial ... According to an announcement made by the Standardization Administration of the PRC (SAC)on March 21, 2007, the organization has given approval to Blue Sky Ecological Agriculture Development Co., Ltd., for a trial run at standardizing the recycling economy, the first such trial project in China.……展开更多
Based on the features of the non-standard equipment executing work, a project management and decision support system oriented to the non-standard equipment is developed, and the information model, function model as we...Based on the features of the non-standard equipment executing work, a project management and decision support system oriented to the non-standard equipment is developed, and the information model, function model as well as the structure framework of the system are also introduced in this paper.展开更多
The existing performance salary system has several grades in the same job title. When the number of workers qualified for promotion is more than the target,quantitative grading is usually adopted to determine salary p...The existing performance salary system has several grades in the same job title. When the number of workers qualified for promotion is more than the target,quantitative grading is usually adopted to determine salary promotion personnel. Scientific,fair and reasonable grading content and standard directly concern income and remuneration of scientific researchers,and also concern recognition and respect degree of contribution made by scientific researchers. Therefore,quantitative grading standard is of the utmost importance to keeping stability,arousing enthusiasm and creativity of scientific researchers,and promoting smooth development of scientific research. Achievements awarded,papers published and project research can reflect scientific research level,ability and working performance of agricultural scientific researchers. This paper takes these three items as examples,analyzes,discusses and compares the establishment and evaluation of quantitative grading standard. It states that " one yardstick" and " one vote veto system" should be adhered to when evaluating using the quantitative grading standard. It is expected to provide reference for organizations of the same trade in establishing quantitative grading standard and conducting evaluation.展开更多
Standard is the technical foundation of national economic and social development, and it is the basic rule of establishing social regulation. Researching and constituting the standard system of urban domestic water sa...Standard is the technical foundation of national economic and social development, and it is the basic rule of establishing social regulation. Researching and constituting the standard system of urban domestic water saving technology is to offer important science basis for revising standard plan and standardize research plan. This paper introduces the present situation of our urban domestic water saving technical standard system, problem and the development direction in the future, as well as project planning of constructing urban domestic water saving technical standard system.展开更多
Regional drought analysis provides useful information for sustainable water resources management.In this paper,a standardized precipitation index(SPI) at multiple time scales was used to investigate the spatial patter...Regional drought analysis provides useful information for sustainable water resources management.In this paper,a standardized precipitation index(SPI) at multiple time scales was used to investigate the spatial patterns and trends of drought in the Han River Basin,one of the largest tributaries of Yangtze River,China.It was found that,in terms of drought severity,the upper basin of the Han River is the least,while the growing trend is the most conspicuous;a less conspicuous growing trend can be observed in the middle basin;and there is an insignificant decreasing trend in the lower basin.Meanwhile,the impact of drought on the Middle Route of the South-to-North Water Transfer Project was investigated,and it is suggested that water intake must be reduced in times of drought,particularly when successive or simultaneous droughts in the upper and middle basins of the Han River Basin occur.The results can provide substantial information for future water allocation schemes of the South-to-North Water Transfer Project.展开更多
针对FasterVit网络存在的注意力机制失衡、池化策略缺陷导致部分重要特征无法保留和损失函数不能全面考虑所有类别的信息导致学习到的特征比较分散等问题,提出了一种基于CFasterVit-三并联分支融合注意力机制(triple-parallel fusion at...针对FasterVit网络存在的注意力机制失衡、池化策略缺陷导致部分重要特征无法保留和损失函数不能全面考虑所有类别的信息导致学习到的特征比较分散等问题,提出了一种基于CFasterVit-三并联分支融合注意力机制(triple-parallel fusion attention model,TFAM)与余弦均匀流形逼近与投影(cosineuniform manifold approximation and projection,COS-UMAP)模型的滚动轴承故障诊断方法。该模型由FasterVit-TFAM网络、COS-UMAP降维算法和激活函数类距均值标准差损失函数(class-distance mean standard deviation loss,CMSD)-Softmax组成。首先,提出了一种新的注意力机制TFAM,并与FasterVit网络结合,提升了FasterVit网络信息关注的均衡性和表征能力;其次,将基于COS-UMAP降维算法取代FasterVit网络全连接层前最后一次池化操作,有效筛选并保留多维数据中的重要特征;最后,将类距均值标准差损失函数替换Softmax激活函数中的交叉熵损失函数,更全面地学习特征并提高模型的泛化性。西安交通大学滚动轴承数据集滚动轴承故障试验结果表明,TFAM注意力机制和其他注意力机制相比诊断准确率最大提升8.0%,COS-UMAP对比其他降维算法诊断准确率最大提升15.8%,CMSD对比交叉熵损失函数诊断准确率提升0.5%,所提模型对故障样本的识别准确率达到了99.6%,相比FasterVit提升了1.4%,相较于其他网络模型最大提升7.8%;东南大学滚动轴承数据集仿真验证试验结果表明,所提模型对故障样本识别率达98.6%,相比FasterVit提升了2.2%,平均每轮训练时间缩短了16.92 s,对比其他网络模型最大提升12.2%,有效提高了滚动轴承故障诊断模型的准确率和泛化性能。展开更多
文摘At the first working meeting of the 'Key Technical Standard PromotionProject', an important project of the national scientific and technical support plan during the'11th Five Year' held recently in Beijing, the first group of 11 research topics for the 'KeyTechnical Standard Promotion Project' was formally introduced. According to Ms. Yu Xinli, who is incharge of the project as Deputy Director of the China National Institute of Standardization, theproject comprises four aspects: the international standards key breakthrough project, the technicalstandards promotion project of adapting technical trade measures, the technical standards innovationproject of basic public welfare, and the technical standard enhancement project of public security.
文摘 According to an announcement made by the Standardization Administration of the PRC (SAC)on March 21, 2007, the organization has given approval to Blue Sky Ecological Agriculture Development Co., Ltd., for a trial run at standardizing the recycling economy, the first such trial project in China.……
文摘Based on the features of the non-standard equipment executing work, a project management and decision support system oriented to the non-standard equipment is developed, and the information model, function model as well as the structure framework of the system are also introduced in this paper.
文摘The existing performance salary system has several grades in the same job title. When the number of workers qualified for promotion is more than the target,quantitative grading is usually adopted to determine salary promotion personnel. Scientific,fair and reasonable grading content and standard directly concern income and remuneration of scientific researchers,and also concern recognition and respect degree of contribution made by scientific researchers. Therefore,quantitative grading standard is of the utmost importance to keeping stability,arousing enthusiasm and creativity of scientific researchers,and promoting smooth development of scientific research. Achievements awarded,papers published and project research can reflect scientific research level,ability and working performance of agricultural scientific researchers. This paper takes these three items as examples,analyzes,discusses and compares the establishment and evaluation of quantitative grading standard. It states that " one yardstick" and " one vote veto system" should be adhered to when evaluating using the quantitative grading standard. It is expected to provide reference for organizations of the same trade in establishing quantitative grading standard and conducting evaluation.
基金The national basic platform project of science and technology.This paper is a part of standard system of water resource used continuously in China.(2004DEA70920-04)
文摘Standard is the technical foundation of national economic and social development, and it is the basic rule of establishing social regulation. Researching and constituting the standard system of urban domestic water saving technology is to offer important science basis for revising standard plan and standardize research plan. This paper introduces the present situation of our urban domestic water saving technical standard system, problem and the development direction in the future, as well as project planning of constructing urban domestic water saving technical standard system.
基金Project supported by the National Natural Science Foundation of China (No.50809058)the International Science and Technology Cooperation Program of China (No.2010DFA24320)
文摘Regional drought analysis provides useful information for sustainable water resources management.In this paper,a standardized precipitation index(SPI) at multiple time scales was used to investigate the spatial patterns and trends of drought in the Han River Basin,one of the largest tributaries of Yangtze River,China.It was found that,in terms of drought severity,the upper basin of the Han River is the least,while the growing trend is the most conspicuous;a less conspicuous growing trend can be observed in the middle basin;and there is an insignificant decreasing trend in the lower basin.Meanwhile,the impact of drought on the Middle Route of the South-to-North Water Transfer Project was investigated,and it is suggested that water intake must be reduced in times of drought,particularly when successive or simultaneous droughts in the upper and middle basins of the Han River Basin occur.The results can provide substantial information for future water allocation schemes of the South-to-North Water Transfer Project.
文摘针对FasterVit网络存在的注意力机制失衡、池化策略缺陷导致部分重要特征无法保留和损失函数不能全面考虑所有类别的信息导致学习到的特征比较分散等问题,提出了一种基于CFasterVit-三并联分支融合注意力机制(triple-parallel fusion attention model,TFAM)与余弦均匀流形逼近与投影(cosineuniform manifold approximation and projection,COS-UMAP)模型的滚动轴承故障诊断方法。该模型由FasterVit-TFAM网络、COS-UMAP降维算法和激活函数类距均值标准差损失函数(class-distance mean standard deviation loss,CMSD)-Softmax组成。首先,提出了一种新的注意力机制TFAM,并与FasterVit网络结合,提升了FasterVit网络信息关注的均衡性和表征能力;其次,将基于COS-UMAP降维算法取代FasterVit网络全连接层前最后一次池化操作,有效筛选并保留多维数据中的重要特征;最后,将类距均值标准差损失函数替换Softmax激活函数中的交叉熵损失函数,更全面地学习特征并提高模型的泛化性。西安交通大学滚动轴承数据集滚动轴承故障试验结果表明,TFAM注意力机制和其他注意力机制相比诊断准确率最大提升8.0%,COS-UMAP对比其他降维算法诊断准确率最大提升15.8%,CMSD对比交叉熵损失函数诊断准确率提升0.5%,所提模型对故障样本的识别准确率达到了99.6%,相比FasterVit提升了1.4%,相较于其他网络模型最大提升7.8%;东南大学滚动轴承数据集仿真验证试验结果表明,所提模型对故障样本识别率达98.6%,相比FasterVit提升了2.2%,平均每轮训练时间缩短了16.92 s,对比其他网络模型最大提升12.2%,有效提高了滚动轴承故障诊断模型的准确率和泛化性能。
