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循证策略叠加预见性管理防控ICU多药耐药菌感染的临床效果

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中华医院感染学杂志 2024年第3期34卷 444-448页

作者：陈洁琼陈瑜许兆军徐畅孙琼慧王盼詹晔斐宁波市第二医院重症医学科浙江宁波315010

目的探讨循证策略叠加预见性管理在防控ICU多药耐药菌(MDRO)感染的临床效果.方法选取2016年6月-2018年5月宁波市第二医院ICU收治的687例患者作为对照组,2019年6月-2021年5收治的1576例患者为干预组,其中对照组实施常规MDRO感染防控措施... 详细信息

目的探讨循证策略叠加预见性管理在防控ICU多药耐药菌(MDRO)感染的临床效果.方法选取2016年6月-2018年5月宁波市第二医院ICU收治的687例患者作为对照组,2019年6月-2021年5收治的1576例患者为干预组,其中对照组实施常规MDRO感染防控措施,干预组在此基础上实施循证策略叠加预见性管理;EBSCPM包括ICU病房分区、环境MDRO监测、使用2%洗必泰湿巾清洁皮肤、使用过氧化氢喷雾剂消毒病房、手部卫生严格检查、MDRO监测"临界"标记以及电子显示感染控制信息;比较两组患者MDRO感染率、医院感染率、防控措施执行情况及环境MDRO检出率.结果干预组MDRO感染率、医院感染率和环境MDRO检出率低于对照组(P<0.05);干预组接触隔离措施落实率、实施接触隔离时间、手卫生依从性和准确性均提高(P<0.05);多因素分析显示,循证策略叠加预见性管理与ICU患者较低的医院感染和MDRO感染率相关(医院感染:OR=0.44,95%CI:0.35~0.55,P<0.001;MDRO感染:OR=0.35,95%CI:0.27~0.44,P<0.001).结论应用循证策略叠加预见性管理与ICU患者MDRO感染的预防和控制改善有关.

关键词：循证策略预见性管理重症监护病房多药耐药菌医院感染预防与控制

Vegetation Changes in Alberta Oil Sands,Canada,Based on Remotely Sensed Data from 1995 to 2020

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Journal of Environmental & Earth Sciences 2022年第2期4卷 17-32页

作者： Jinxin He Debo Chen ye zhan Chao Liu Ruichen Liu College of Earth Sciences Jilin UniversityChangchunJilin130061China Aviation University Air Force ChangchunJilin130021China

There are rich oil and gas resources in Alberta oil sand mining area in *** the 1960s,the Canadian government decided to increase the mining ***,the exploitation will bring many adverse *** recent years,more people pay attention to the environmental protection and ecological restoration of mining area,such as issues related with changes of vegetated ***,the authors used the Landsat-5 TM and Landsat-8 OLI remote sensing images as the basic data sources,and obtained the land cover classification maps from 1995 to 2020 by *** on the NDVI,NDMI and RVI,three images in each period are processed and output to explore the long-term impact of *** results show that from 1995 to 2020,the proportion of vegetation around mining areas decreased sharply,the scale of construction land in the mining area increased,and the vegetated land was changed to land types such as tailings pond,oil sand mine and other land *** addition,three vegetation indexes decreased from 1995 to *** the exploitation of oil sand mining area brings great economic benefits,the environmental protection(especially vegetation)in oil sand mining areas should be paid more attention.

关键词： Alberta Oil sands Vegetation changes Remote sensing Landsat

Deadline-Constrained and Cost-Effective Multi-Workflow Scheduling with Uncertainty in Cloud Control Systems

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Journal of Systems Science & Complexity 2024年第5期37卷 1861-1886页

作者： ye Lingjuan YANG Liwen XIA Yuanqing zhan Yufeng ZHAO Xinchao School of Science Beijing University of Posts and Telecommunications Key Laboratory of Mathematics and Information Networks Beijing University of Posts and Telecommunications Ministry of Education School of Automation Nanjing University of Information Science and Technology School of Automation Beijing Institute of Technology

In cloud control systems, generating an efficient and economical workflow scheduling strategy for deadline-constrained workflow applications, especially in uncertain multi-workflow dynamic scheduling processes, is a crucial challenge. To optimize the total cost of workflow scheduling, the authors propose a cost-driven heuristic scheduling algorithm F-MWSA which consists of two phases:Fuzzy deadline distribution and fuzzy task scheduling. In the fuzzy deadline distribution phase, a new workflow deadline distribution strategy with fuzziness is designed to obtain the sub-deadline constraint of each task. The fuzzy task scheduling phase focuses on a cost-effective strategy to assign tasks to cloud resources, reducing multi-workflow scheduling costs. Performance evaluations on five real-world workflows demonstrate that the proposed F-MWSA outperforms the baseline policy in terms of total cost, success ratio, resource utilization, and makespan.

关键词： Cloud computing cost-effective deadline constraint multi-workflow scheduling uncertainty

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混合可再生能源微电网的集成功率管理和非线性控制

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环境技术 2024年第7期42卷 82-87页

作者：韩洁琼龙存玉高阳范文婧冶占清国网青海省电力公司营销服务中心西宁810016

针对可再生能源发电的不确定性和间歇性问题,提出集成功率管理和非线性控制的策略,设计了一种混合光伏/风电/储能电池的微电网系统。该策略采用最大功率点跟踪算法,以最大限度地从每种可再生能源中提取能量。同时,设计了一种滑模控制技... 详细信息

针对可再生能源发电的不确定性和间歇性问题,提出集成功率管理和非线性控制的策略,设计了一种混合光伏/风电/储能电池的微电网系统。该策略采用最大功率点跟踪算法,以最大限度地从每种可再生能源中提取能量。同时,设计了一种滑模控制技术,以提高系统的稳健性并确保有效的能源管理,不受系统扰动、负载波动、辐射和风速变化的影响。该优化框架在交流微电网系统上进行了测试和验证,证明了其有效性。仿真结果表明,该系统能够有效地管理功率流,并保持恒定的直流母线电压和负载电压水平,确保了系统的平稳运行。

关键词：储能系统太阳能-风能混合系统微电网建模非线性控制优化能源管理

Review of methods to improve the performance of linear array-based photoacoustic tomography

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Journal of Innovative Optical Health Sciences 2020年第2期13卷 1-12页

作者： Yuehang Wang ye zhan Melinda Tiao Jun Xia Department of Biomedical Engineering University at Bu®alo State University of New York BuffaloNY 14260USA

As a hybrid imaging modality that combines optical excitation with acoustic detection,photoacoustic tomography(PAT)has become one of the fastest growing biomedical imaging *** various types of transducer arrays used in a PAT system conguration,the linear array is the most commonly utilized due to its convenience and *** linear array-based PAT has been quickly developed within the recent decade,there are still two major challenges that impair the overall performance of the PAT imaging *** challenge is that the three-dimensional(3D)imaging capability of a linear array is limited due to its poor elevational *** other challenge is that the geometrical shape of the linear array constrains light *** date,substantial e®orts have been made to address the aforementioned *** review will present current technologies for improving the elevation resolution and light delivery of linear array-based PAT systems.

关键词： Photoacoustic tomography linear array ultrasound transducer spatial resolution

Synthesis of ultrathin semicircle-shaped copper nanowires in ethanol solution for low haze flexible transparent conductors

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Nano Research 2018年第7期11卷 3899-3910页

作者： ye zhan~ Jiangna Guo Dan Xu Yi Sun Feng Yan Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application Department of Polymer Science and EngineeringCollege of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou 215123 China

Copper nanowires （CuNWs） are becoming an indispensable item for next- generation transparent optical devices due to their excellent conductivity and transparency. In this work, ultrathin semicircle-shaped copper nanowires （SCuNWs） with a diameter of - 15 nm and a length of - 30 μm （aspect ratio of -2,000） were synthesized in ethanol solution. The mechanism and factors that affect the morphology and dispersity of the SCuNWs were investigated. The prepared SCuNWs were coated on polyethylene terephthalate （PET） or polyd- imethylsiloxane （PDMS） substrate to fabricate flexible transparent conductors （FTCs）. The fabricated FTCs exhibited excellent optoelectrical performance and low haze. In addition, the fabricated FTCs showed high mechanical stability during stretching and bending, indicating their great potential in flexible optical devices.

关键词： copper nanowires semicircle-shaped ultrathin low haze flexible transparent conductors

An Efficient Synthetic Strategy for Construction of Functionalized Pentacyclic Skeleton of ecteinascidin-saframycin Alkaloids

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Chinese Chemical Letters 2006年第7期17卷 853-856页

作者： ye WANG zhan Zhu LIU ye Feng TANG Shi Zhi CHEN Institute of Materia Medica Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100050

Two functionalized pentacyclic compounds 12a, 12b were constructed via a highly efficient synthetic route, employing a tricyclic amino aldehyde as the key intermediate. The crucial steps involved coupling of two segme... 详细信息

关键词： Ecteinascidin saframycin tetrahydroisoquinoline Pictet-Spengler reaction.

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不同构型超表面偏振检测

光学学报 2024年第14期44卷 266-274页

作者：叶超周钰聪占春连高涵中国计量大学光学与电子科技学院

为了探究不同偏振构型超表面对偏振检测效果的影响，利用梯度下降法和退火优化智能算法设计制备了工作波长为1550 nm，偏振构型分别为平面、普通四面体、正四面体的3种超表面衍射光栅，实验对比了它们对完全偏振光的检测能力。结果表明... 详细信息

为了探究不同偏振构型超表面对偏振检测效果的影响，利用梯度下降法和退火优化智能算法设计制备了工作波长为1550 nm，偏振构型分别为平面、普通四面体、正四面体的3种超表面衍射光栅，实验对比了它们对完全偏振光的检测能力。结果表明，正四面体光栅的检测误差最小，具有最佳的性能：恢复得到线偏振角度的均方根误差为0.79°，小于1°；对于椭圆偏振光，方位角和椭偏角的均方根误差分别为2.93°、3.76°。另外，所设计的超表面衍射光栅在1540 nm和1560 nm同样可以实现偏振检测，具有一定的宽带性能。所提出的偏振检测超表面按需逆向设计方法和对不同偏振构型超表面偏振检测性能的研究为未来设计具有灵活、高精度检偏性能的超表面提供了技术依据。

关键词：表面光学超表面衍射光栅偏振检测偏振构型正四面体光栅

Theta Oscillations Support Prefrontal-hippocampal Interactions in Sequential Working Memory

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Neuroscience Bulletin 2024年第2期40卷 147-156页

作者： Minghong Su Kejia Hu Wei Liu Yunhao Wu Tao Wang Chunyan Cao Bomin Sun Shikun zhan Zheng ye Institute of Psychology Chinese Academy of SciencesBeijing 100101China Department of Psychology University of Chinese Academy of SciencesBeijing 100049China Department of Neurosurgery Center for Functional NeurosurgeryRuijin HospitalShanghai Jiao Tong University School of MedicineShanghai 200025China Institute of Neuroscience Center for Excellence in Brain Science and Intelligence TechnologyChinese Academy of SciencesShanghai 200031China

The prefrontal cortex and hippocampus may support sequential working memory beyond episodic memory and spatial *** stereoelectroencephalography(SEEG)study investigated how the dorsolateral prefrontal cortex(DLPFC)interacts with the hippocampus in the online processing of sequential *** patients with epilepsy(eight women,age 27.6±8.2 years)completed a line ordering task with SEEG recordings over the DLPFC and the *** showed longer thinking times and more recall errors when asked to arrange random lines clockwise(random trials)than to maintain ordered lines(ordered trials)before recalling the orientation of a particular ***,the ordering-related increase in thinking time and recall error was associated with a transient theta power increase in the hippocampus and a sustained theta power increase in the DLPFC(3–10 Hz).In particular,the hippocampal theta power increase correlated with the memory precision of line ***,theta phase coherences between the DLPFC and hippocampus were enhanced for ordering,especially for more precisely memorized ***,the theta band DLPFC→hippocampus influence was selectively enhanced for ordering,especially for more precisely memorized *** study suggests that theta oscillations may support DLPFC-hippocampal interactions in the online processing of sequential information.

关键词： Sequential working memory Hippocampus Dorsolateral prefrontal cortex Theta oscillations Stereoelectroencephalography(SEEG) Phase coherence Granger causality