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IDEEA activity monitor: validity of activity recognition for lying, reclining, sitting and standing

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《医学前沿（英文）》 2013年第7卷第1期页码 126-131 doi: 10.1007/s11684-012-0236-0

摘要：

Recent evidence demonstrates the independent negative effects of sedentary behavior on health, but there are few objective measures of sedentary behavior. Most instruments measure physical activity and are not validated as measures of sedentary behavior. The purpose of this study was to evaluate the validity of the IDEEA system’s measures of sedentary and low-intensity physical activities: lying, reclining, sitting and standing. Thirty subjects, 14 men and 16 women, aged 23 to 77 years, body mass index (BMI) between 18 to 34 kg/m², participated in the study. IDEEA measures were compared to direct observation for 27 activities: 10 lying in bed, 3 lying on a sofa, 1 reclining in a lawn chair, 10 sitting and 3 standing. Two measures are reported, the percentage of activities accurately identified and the percentage of monitored time that was accurately labeled by the IDEEA system for all subjects. A total of 91.6% of all observed activities were accurately identified and 92.4% of the total monitored time was accurately labeled. The IDEEA system did not accurately differentiate between lying and reclining so the two activities were combined for calculating accuracy. Using this approach the IDEEA system accurately identified 96% of sitting activities for a total of 97% of the monitored sitting time, 99% and 99% for standing, 87% and 88% for lying in bed, 87% and 88% for lying on the sofa, and 83% and 83% for reclining on a lawn chair. We conclude that the IDEEA system accurately recognizes sitting and standing positions, but it is less accurate in identifying lying and reclining positions. We recommend combining the lying and reclining activities to improve accuracy. The IDEEA system enables researchers to monitor lying, reclining, sitting and standing with a reasonable level of accuracy and has the potential to advance the science of sedentary behaviors and low-intensity physical activities.

关键词： IDEEA activity monitor sedentary behavior

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Novel quantum-inspired firefly algorithm for optimal power quality monitor placement

Ling Ai WONG,Hussain SHAREEF,Azah MOHAMED,Ahmad Asrul IBRAHIM

《能源前沿（英文）》 2014年第8卷第2期页码 254-260 doi: 10.1007/s11708-014-0302-1

摘要： The application of a quantum-inspired firefly algorithm was introduced to obtain optimal power quality monitor placement in a power system. The conventional binary firefly algorithm was modified by using quantum principles to attain a faster convergence rate that can improve system performance and to avoid premature convergence. In the optimization process, a multi-objective function was used with the system observability constraint, which is determined via the topological monitor reach area concept. The multi-objective function comprises three functions: number of required monitors, monitor overlapping index, and sag severity index. The effectiveness of the proposed method was verified by applying the algorithm to an IEEE 118-bus transmission system and by comparing the algorithm with others of its kind.

关键词： quantum-inspired binary firefly algorithm topological monitor reach area power quality

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我国石油经济安全与监测预警复杂战略系统研究

葛家理,胡机豪,张宏民

《中国工程科学》 2002年第4卷第1期页码 75-80

摘要：

对影响石油经济安全的十个潜在要素及国内国际石油经济安全的总体态势进行了分析，提出了石油经济安全的四个新特征及相应的"发展的安全观"理论。运用复杂性科学的理论对石油经济安全系统进行了分析，提出了"机遇控制论"的基本思想，通过综合集成建立了石油经济安全的主指标体系，确定了其安全界限，并编制了实用的石油经济安全数据库系统和预警监测系统软件，大大节约了安全决策的时间和成本。

关键词：石油经济安全复杂性科学安全监测与预警软件

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超深立井安全高效施工信息化监测监控

沈慰安,梁恒昌,赵光思

《中国工程科学》 2012年第14卷第2期页码 45-48

摘要：

随着立井建设深度的增加，井壁不安全性及施工难度逐渐增加，为确保立井井壁安全、吊桶运行安全及施工过程安全，需要实时掌握井壁的受力状态及监测施工过程，信息化监测是保证工程施工安全的重要措施和基本前提。基于本溪大台沟铁矿直径6.5 m、井深1 640 m的超深立井井筒施工背景，在阐述目前超深立井建设过程存在的井壁安全、吊盘安全、施工实时安全等问题的基础上，提出了凿井施工过程视频监控系统、吊盘关键点荷载监控系统、提升吊桶运行监控系统的信息化集成方案，以达到实时掌握井壁安全及施工安全的目的，监测方案的实施可为深立井安全高效施工提供技术依据。

关键词：超深立井安全信息化施工监测监控

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中国海透明度卫星遥感监测

何贤强,潘德炉,黄二辉,赵艳玲

《中国工程科学》 2004年第6卷第9期页码 33-37

摘要：

传统的海水透明度监测方法是利用船舶等进行实测。由于船测本身固有的缺点，满足不了当前对海洋要素大范围、快速、实时监测的需求，必须结合卫星、航空遥感等手段，进行立体监测。文章以海水透明度为突破口，开展中国海透明度的卫星遥感监测。结果表明，利用卫星遥感技术反演海水透明度精度可以达到相对平均误差22.6%，在中高透明度海区，具有更高的反演精度。利用建立的海水透明度遥感反演算法和SeaWiFS卫星遥感数据，制作了两年的中国海透明度遥感产品数据集，并利用该产品，对中国海透明度的时空变化规律进行了遥感分析。

关键词：中国海透明度遥感监测

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hydrophobic environment triggering reactive fluorescence probe to real-time monitor mitochondrial DNA

《化学科学与工程前沿（英文）》 2022年第16卷第1期页码 92-102 doi: 10.1007/s11705-021-2063-9

摘要： Mitochondrial DNA has a special structure that is prone to damage resulting in many serious diseases, such as genetic diseases and cancers. Therefore, the rapid and specific monitoring of mitochondrial DNA damage is urgently needed for biological recognition. Herein, we constructed an in situ hydrophobic environment-triggering reactive fluorescence probe named MBI-CN. The fluorophore was 2-styrene-1H-benzo[d]imidazole, and malononitrile was introduced as a core into a molecule to initiate the hydrolysis reaction in the specific environment containing damaged mitochondrial DNA. In this design, MBI-CN conjugates to mitochondrial DNA without causing additional damages. Thus, MBI-CN can be hydrolyzed to generate MBI-CHO in an in situ hydrophobic environment with mitochondrial DNA damage. Meanwhile, MBI-CHO immediately emitted a significative fluorescence signal changes at 437 and 553 nm within 25 s for the damaged mitochondria DNA. Give that the specific and rapid response of MBI-CN does not cause additional damages to mitochondrial DNA, it is a potentially effective detection tool for the real-time monitoring of mitochondrial DNA damage during cell apoptosis and initial assessment of cell apoptosis.

关键词： hydrolysis reaction mitochondrial DNA damage in situ hydrophobic environment trigger fluorescence probe apoptosis

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Three potential benefits of the EU and IMO’s landmark efforts to monitor carbon dioxide emissions from

Shuaian WANG, Lu ZHEN, Harilaos N. PSARAFTIS

《工程管理前沿（英文）》 2021年第8卷第2期页码 310-311 doi: 10.1007/s42524-020-0096-2

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Toxicity-oriented water quality engineering

Shengkun Dong, Chenyue Yin, Xiaohong Chen

《环境科学与工程前沿（英文）》 2020年第14卷第5期 doi: 10.1007/s11783-020-1259-4

摘要： • Toxicity-oriented water quality monitoring was proposed. • Toxicity-oriented water quality engineering control was proposed. • Future issues to the proposition were discussed. The fundamental goal of water quality engineering is to ensure water safety to humans and the environment. Traditional water quality engineering consists of monitoring, evaluation, and control of key water quality parameters. This approach provides some vital insights into water quality, however, most of these parameters do not account for pollutant mixtures – a reality that terminal water users face, nor do most of these parameters have a direct connection with the human health safety of waters. This puts the real health-specific effects of targeted water pollutant monitoring and engineering control in question. To focus our attention to one of the original goals of water quality engineering – human health and environmental protection, we advocate here the toxicity-oriented water quality monitoring and control. This article presents some of our efforts toward such goal. Specifically, complementary to traditional water quality parameters, we evaluated the water toxicity using high sensitivity toxicological endpoints, and subsequently investigated the performance of some of the water treatment strategies in modulating the water toxicity. Moreover, we implemented the toxicity concept into existing water treatment design theory to facilitate toxicity-oriented water quality control designs. Suggestions for the next steps are also discussed. We hope our work will intrigue water quality scientists and engineers to improve and embrace the mixture water pollutant and toxicological evaluation and engineering control.

关键词： Water Wastewater Mixture Toxicity Monitor Control

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基于风廓线雷达技术的沙尘天气监测研究

魏文寿,王敏仲,何清

《中国工程科学》 2012年第14卷第10期页码 51-56

摘要：

利用塔克拉玛干沙漠大气环境观测试验站2010年4月11日沙尘天气风廓线雷达资料，分析了此次过程启动爆发的水平风场、垂直速度和雷达等效回波强度特征。研究表明：风廓线雷达是进行沙尘探测和监测的一种有效的高空大气遥感系统，它不仅可以捕捉到沙尘天气的开始和结束时间，而且能监测到沙尘在空中被输送的高度、厚度范围以及沙尘运动的垂直强度特征;塔克拉玛干沙漠扬沙和沙尘暴雷达等效回波强度约为-3～10 dBZ，浮尘等效回波强度约为-15～-3 dBZ;水平风垂直切变以及低空东风的维持是此次沙尘天气发生的动力成因。扬沙、沙尘暴发生时，大气垂直速度表现为上升运动，在较大水平风速及干燥下垫面的配合下，导致地面沙粒被输送到高空，形成了沙尘天气。

关键词：风廓线雷达沙尘天气等效回波强度监测

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水平井压裂裂缝监测与分析

刘建中,张传绪,赵艳波,蒋玉双,宋健兴

《中国工程科学》 2008年第10卷第4期页码 60-64

摘要：

水平井可以在不太厚的油层中增大钻井过油层范围，实现高速注、采，提高产量。有些水平井需要压裂，因此常常需要了解并控制人工裂缝形态、方位。通过微地震人工裂缝监测，研究已有的水平井压裂结果，特别是钻井水平段大体沿最大水平主应力方向的水平井压裂，了解压裂裂缝形成的机制及控制方式。通过比较，进一步提高水平井钻井水平及控缝理论。

关键词：水平井压裂裂缝微地震监测

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三峡库区航道建设中的航标遥测监控系统设计与实现

吴允平,李国祥,艾廷华,蔡声镇,王红,俞建林,李汪彪,杜杨文,刘华松,朱幌,苏伟达,吴进营

《中国工程科学》 2008年第10卷第11期页码 18-22

摘要：

三峡库区航道的地理环境决定了航标遥测监控终端应具有低功耗、高精度定位及高可靠性等特点。终端采用双单片机架构设计，多层分级的数据处理方法，提高了终端的可靠性，功耗仅30 mA/4V；基于通用分组无线业务的虚拟专网(GPRS VPN)网络传送美国海运事业无线电委员会（RTCM）的差分数据，GPS定位精度达到0.9 m；基于S-57标准并进行适当的拓展作为数据管理和交换平台，以满足内河应用需求。系统已使用了近4年，经历寒暑变化，仍然可靠运行。

关键词：三峡库区航标监控双单片机架构 S-57 差分GPS