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CHAUS:Scalable VM-Based Channels for Unbounded Streaming

Journal of Computer Science & Technology 2017年第6期32卷 1288-1304页

作者： yu Zhang yu-fen yu Hui-Fang Cao Jian-Kang Chen Qi-Liang Zhang School of Computer Science and Technology University of Science and Technology of China Hefei 230027 China

Stream processing is a special form of the dataflow execution model that offers extensive opportunities for optimization and automatic parallelism. A streaming application is represented by a graph of computation stages that communicate with each other via FIFO channels. In shared-memory environment, an FIFO channel is classically a com- mon, fixed-size synchronized buffer shared between the producer and the consumer. As the number of concurrent stage workers increases, the synchronization overheads, such as contention and waiting times, rise sharply and severely impair application performance. In this paper, we present a novel multithreaded model which isolates memory between threads by default and provides a higher level abstraction for scalable unicast or multicast communication between threads -- CHAUS （Channel for Unbounded Streaming）. The CHAUS model hides the underlying synchronization details, but requires the user to declare producer-consumer relationship of a channel in advance. It is the duty of the runtime system to ensure reliable data transmission at data item granularity as declared. To achieve unbounded buffer for streaming and reduce the synchronization overheads, we propose a virtual memory based solution to implement a scalable CHAUS channel. We check the programmability of CHAUS by successfully porting dedup and ferret from PARSEC as well as implementing MapReduce library with Phoenix-like API. The experimental results show that workloads built with CHAUS run faster than those with Pthreads, and CHAUS has the best scalability compared with two Pthread versions. There are three workloads whose CHAUS versions only spend no more than 0.17x runtime of Pthreads on both 16 and 32 cores.

关键词： streaming thread model pipeline parallelism unbounded channel virtual memory

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非意愿妊娠情况分析

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中国妇幼保健 2007年第27期22卷 3894-3896页

作者：江华林艳俞玉芬江苏省常州市妇幼保健院 213000

目的:通过对常州市育龄妇女非意愿妊娠的现状调查,分析中止非意愿妊娠的理想方式,探讨降低非意愿妊娠的有效措施,保护广大育龄妇女的生殖健康。方法:根据常州市区所有从事计划生育手术单位的月报表,对2002～2005年间的73346例人工流产... 详细信息

目的:通过对常州市育龄妇女非意愿妊娠的现状调查,分析中止非意愿妊娠的理想方式,探讨降低非意愿妊娠的有效措施,保护广大育龄妇女的生殖健康。方法:根据常州市区所有从事计划生育手术单位的月报表,对2002～2005年间的73346例人工流产进行回顾性分析。结果:药物流产构成比由2002年的33.92%上升至2005年的48.08%(P<0.01),人工流产负压吸引术构成比由2002年的60.27%下降至2005年的48.08%(P<0.01)。终止妊娠手术原因前三位分别为未婚先孕(36.09%)、其它(24.02%)及无措施(21.36%),未婚先孕者流产由2002年的30.52%上升至2005年的39.84%(P<0.01)。结论:常州市区各医院计划生育手术以负压吸引术和药流术为主,药流数逐年上升;减少非意愿妊娠的重点是加强青少年生殖健康教育,以及宣传普及避孕知识,合理应用紧急避孕方法。

关键词：非意愿妊娠人工流产生殖健康

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吉林省长白山地区林下经济增长质量时空分异及影响因素研究

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东北师大学报（哲学社会科学版） 2023年第1期 147-158,202页

作者：董姝娜余宇芬付永存长春师范大学地理科学学院吉林长春130032

新常态背景下,我国经济增长从关注速度转向关注质量。发展林下经济是我国对绿色经济高质量发展提出的新要求,也是实现资源永续利用的重要举措。本研究基于2011—2018年吉林省长白山地区重点国有林场数据,探讨吉林省长白山地区10个县级... 详细信息

新常态背景下,我国经济增长从关注速度转向关注质量。发展林下经济是我国对绿色经济高质量发展提出的新要求,也是实现资源永续利用的重要举措。本研究基于2011—2018年吉林省长白山地区重点国有林场数据,探讨吉林省长白山地区10个县级空间单元的林下经济增长质量时序变化,评价分析其空间分异特征及空间相互作用,同时构建“地理—经济”距离下空间权重矩阵,借助空间计量模型对林下经济增长质量空间效应和影响因素进行分析。通过分析得出以下研究结论:2011—2018年,吉林省长白山地区各个空间单元林下经济增长质量呈现波动上升的趋势。高增长质量区以抚松县为代表,集中连片分布于中部地区;中增长质量区紧邻高值区分布;少数低增长质量区零散分布在边缘地带。空间相互作用力呈现网状拓扑结构,强弱分布与空间等级分布一致对应,即高增长质量区之间具有强空间相互作用力,低增长质量区之间空间相互作用力弱。本研究选取了5个影响因素,即资本投入因子、产业投入因子、经济结构因子、福利投入因子及环境投入因子,影响因素均纳入“地理—经济”距离下空间权重矩阵进行分析,得出经济结构因子对林下经济增长质量的提升最有效,资本投入因子为阻碍空间集聚效应的最显著因素。最后,本研究根据时空分异特点和影响因素的显著性区别,提出吉林省林下经济增长质量的具体提升路径。

关键词：林下经济增长质量时空分异吉林省长白山地区

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Atomically precise nickel-sulfur clusters for efficient electrochemical 2,5-hydroxymethylfurfural oxidation

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Nano Research 2025年第1期18卷 140-148页

作者： fen Wang Lu-yu Liu Sha-Sha Cui Ting-Ting Li Xiao-Meng Yang Zhijuan Liu Yanyong Wang Henan Key Laboratory of Crystalline Molecular Functional Materials Henan International Joint Laboratory of Tumor Theranostical Cluster MaterialsGreen Catalysis Centerand College of ChemistryZhengzhou UniversityZhengzhou 450001China State Key Laboratory of Chem/Bio-sensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China

Nickel sulfide exhibits excellent catalytic activity in the electrochemical 2,5-hydroxymethylfurfural oxidation reaction(HMFOR).However,due to the polydispersity of nanoparticles,it is difficult to establish a clear structure-activity relationship at the atomic *** this work,we have successfully synthesized atomically precise Ni_(6)(PET)_(12)and Ni_(4)(PET)_(8)clusters(PET:2-phenylethanethiol)for ***^(2+)and S_(2)-with atomic ratio of 1:2 was mainly existed in Ni_(6)(PET)_(12)and Ni_(4)(PET)_(8)to form Ni-S *** electrochemical test results have suggested both Ni_(6)(PET)_(12)and Ni_(4)(PET)_(8)displayed outstanding electrocatalytic ability for *** Ni_(6)(PET)_(12)exhibited better electrocatalytic ability than Ni_(4)(PET)_(8)with higher current density,lower overpotential and faster reaction *** superior electrochemical ability of Ni_(6)(PET)_(12)may be due to the enhanced adsorption towards HMF molecule with strong interaction towards hydroxyl group and furan ***,it found that the Ni^(2+)species in Ni_(6)(PET)_(12)could rapidly oxidized into Ni^(3+)species,which could spontaneously capture electron and proton from HMF for *** theoretical calculation demonstrated that the Ni_(6)(PET)_(12)process lower free energy barrier than Ni_(4)(PET)_(8)to display excellent electrocatalytic *** work is of great significance for designing efficient electrocatalysts for HMFOR.

关键词： atomically precise nickel nanoclusters 2 5-hydroxymethylfurfural electro-oxidation Ni3+species

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Nanostructured ZnO/BiVO_(4)I-scheme heterojunctions for piezocatalytic degradation of organic dyes via harvesting ultrasonic vibration energy

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 488-497页

作者： Yiling Li Xiaoyao yu Yingjie Zhou Yao Lin Ying Wu Key Laboratory of the Ministry of Education for Advanced Catalysis Materials College of Chemistry and Materials ScienceZhejiang Normal UniversityJinhua 321004China

BiVO_(4)porous spheres modified by ZnO were designed and synthesized using a facile two-step *** resulting ZnO/BiVO_(4)composite catalysts have shown remarkable efficiency as piezoelectric catalysts for degrading Rhodamine B(RhB)unde mechanical vibrations,they exhibit superior activity compared to pure *** 40wt%ZnO/BiVO_(4)heterojunction composite displayed the highest activity,along with good stability and *** enhanced piezoelectric catalytic activity can be attributed to the form ation of an I-scheme heterojunction structure,which can effectively inhibit the electron-hole ***,hole(h+)and superoxide radical(·O_(2)^(-))are proved to be the primary active ***,ZnO/BiVO_(4)stands as an efficient and stable piezoelectric catalyst with broad potential application in the field of environmental water pollution treatment.

关键词： piezoelectric catalytic heterojunction dye degradation ultrasonic vibration

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利用VBA提高农业信息资源建设的工作效率和质量

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广东农业科学 2009年第2期36卷 119-123页

作者：赵馨余玉芬黄楷仁王众广东省农科院科技情报研究所广东广州510640

农业信息资源建设过程中,经常会遇到批量查找、替换和标注等重复性强且繁琐的操作,自动化语言VBA作为一种与微软办公套件可以协同工作的工具,可以成为农业信息资源建设过程中采集、编码和审核等重要环节的得力助手。通过探索VBA在农业... 详细信息

农业信息资源建设过程中,经常会遇到批量查找、替换和标注等重复性强且繁琐的操作,自动化语言VBA作为一种与微软办公套件可以协同工作的工具,可以成为农业信息资源建设过程中采集、编码和审核等重要环节的得力助手。通过探索VBA在农业信息采集、整理、加工中的应用,以实例的方式展示了VBA协助不同格式农业信息的快速整理、格式的统一和禁用农药的批量查找和标注,提高农业信息整合的工作效率和质量的应用。

关键词： VBA 农业信息资源建设工作效率信息质量

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Interconnections between diabetic corneal neuropathy and diabetic retinopathy:diagnostic and therapeutic implications

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Neural Regeneration Research 2025年第8期20卷 2169-2180页

作者： Mingyi yu Faith Teo En Ning Chang Liu yu-Chi Liu Tissue Engineering and Stem Cell Group Singapore Eye Research InstituteSingapore Yong Loo Lin School of Medicine National University of SingaporeSingapore Department of Cornea and External Eye Disease Singapore National Eye CenterSingapore Ophthalmology and Visual Sciences Academic Clinical Program Duke-NUS Medical SchoolSingapore

Diabetic corneal neuropathy and diabetic retinopathy are ocular complications occurring in the context of diabetes *** corneal neuropathy refers to the progressive damage of corneal *** retinopathy has traditionally been considered as damage to the retinal ***,growing evidence suggests that diabetic retinopathy is a complex neurovascular disorder resulting from dysfunction of the neurovascular unit,which includes both the retinal vascular structures and neural *** retinopathy is one of the leading causes of blindness and is frequently screened for as part of diabetic ocular ***,diabetic corneal neuropathy is commonly overlooked and underdiagnosed,leading to severe ocular surface *** studies have found that these two conditions tend to occur together,and they share similarities in their pathogenesis pathways,being triggered by a status of chronic *** review aims to discuss the interconnection between diabetic corneal neuropathy and diabetic retinopathy,whether diabetic corneal neuropathy precedes diabetic retinopathy,as well as the relation between the stage of diabetic retinopathy and the severity of corneal *** also endeavor to explore the relevance of a corneal screening in diabetic eyes and the possibility of using corneal nerve measurements to monitor the progression of diabetic retinopathy.

关键词： cornea corneal nerves diabetes diabetic corneal neuropathy diabetic retinopathy retina

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Tilting homeostatic and dyshomeostatic microglial balance in health and disease:transforming growth factor-beta1 as a critical protagonist

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Neural Regeneration Research 2025年第10期20卷 2895-2897页

作者： Nicolas Hugues yu Luo Department of Molecular and Cellular Biosciences University of CincinnatiCincinnatiOHUSA Neuroscience Graduate Program University of CincinnatiCincinnatiOHUSA Division of Immunobiology Cincinnati Children’s Hospital Medical CenterUniversity of Cincinnati College of MedicineCincinnatiOHUSA

Adult microglia,by continuously sensing changes in their environment and communicating with nearly all brain cell types,are considered to be the immune sentinels of the *** the healthy central nervous system(CNS),microglia display a unique molecular homeostatic signature(i.e.,Tmem119,P2ry12,Sall1,Siglech,Gpr34,and Hexb)(Figure 1A).

关键词： Figure signature critical

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Unraveling the significance of cobalt on transformation kinetics,crystallography and impact toughness in high-strength steels

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 380-390页

作者： Yishuang yu Jingxiao Zhao Xuelin Wang Hui Guo Zhenjia Xie Chengjia Shang Collaborative Innovation Center of Steel Technology University of Science and Technology BeijingBeijing 100083China School of Materials Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing 100083China

This work reveals the significant effects of cobalt(Co)on the microstructure and impact toughness of as-quenched highstrength steels by experimental characterizations and thermo-kinetic *** results show that the Co-bearing steel exhibits finer blocks and a lower ductile-brittle transition temperature than the steel without ***,the Co-bearing steel reveals higher transformation rates at the intermediate stage with bainite volume fraction ranging from around 0.1 to *** improved impact toughness of the Co-bearing steel results from the higher dense block boundaries dominated by the V1/V2 variant ***,the addition of Co induces a larger transformation driving force and a lower bainite start temperature(BS),thereby contributing to the refinement of blocks and the increase of the V1/V2 variant *** findings would be instructive for the composition,microstructure design,and property optimization of high-strength steels.

关键词： high-strength steel cobalt transformation kinetics crystallography impact toughness

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Co/Co_(7)Fe_(3)heterostructures with controllable alloying degree on carbon spheres as bifunctional electrocatalyst forrechargeable zinc-air batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 476-487页

作者： Junkang Chen Yongyue Zhuang Yanxin Qiao yu Zhang Aihua yuan Hu Zhou School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

Exploring efficient and nonprecious metal electrocatalysts of oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)is crucial for developing rechargeable zinc-air batteries(ZABs).Herein,an alloying-degree control strategy was employed to fabricate nitrogen-doped carbon sphere(NCS)decorated with dual-phase Co/Co_(7)Fe_(3)heterojunctions(CoFe@NCS).The phase composition of materials has been adjusted by controlling the alloying *** optimal CoFe_(0.08)@NCS electrocatalyst displays a half-wave potential of 0.80 V for ORR and an overpotential of 283 mV at 10 mA·cm^(-2)for OER in an alkaline *** intriguing bifunctional electrocatalytic activity and durability is attributed to the hierarchically porous structure and interfacial electron coupling of highly-active Co_(7)Fe_(3)alloy and metallic Co *** the CoFe_(0.08)@NCS material is used as air-cathode catalyst of rechargeable liquid-state zinc-air battery(ZAB),the device shows a high peak power-density(157 mW·cm^(-2))and maintains a stable voltage gap over 150 h,outperforming those of the benchmark(Pt/C+RuO_(2))-based *** particular,the as-fabricated solid-state flexible ZAB delivers a reliable compatibility under different bending *** work provides a promising strategy to develop metal/alloy-based electrocatalysts for the application in renewable energy conversion technologies.

关键词： bifunctional electrocatalysts oxygen reduction reaction oxygen evolution reaction zinc-air battery metal/alloy carbon sphere

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