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pBwA:A provenance-Based what-If Analysis Approach for Data Mining processes

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Chinese Journal of Electronics 2017年第5期26卷 986-992页

作者： KE Jie DONG Hongbin tan Chengyu LIANG Yiwen Computer School Wuhan University International School of Software Wuhan University

This paper presents a provenance-based what-if analysis approach(pBwA) for data mining processes,so decision makers can examine the latest mining result under hypothetical business *** fills the gap that data mining only reveals past status of enterprises with historical *** information is a kind of metadata of data mining *** uses it to identify relevant operation path and intermediate results that is affected by hypothetical business *** refreshes the mining result by partially rerunning the affected *** from previous studies only for relational operations,pBwA can take more general operations into ***,it focuses on the whole mining *** demonstrate that when the affected ratio is less than 74% and 87% in different contexts,pBwA can achieve better time performance.

关键词： Data mining what-if analysis Data provenance provenance(pROV)

Sol-Gel Based Soft Lithography and piezoresponse Force Microscopy of patterned pb(Zr_(0.52)Ti _(0.48))O_3 Microstructures

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Journal of Materials Science & Technology 2010年第5期26卷 439-444页

作者： Lining Lani Shuhong Xie Li tan Jiangyu Li Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education and Faculty of Materials Optoelectronics and Physics Xiangtan University Xiangtan 411105 China Department of Engineering Mechanics University of Nebraska Lincoln 68588-0526 USA Department of Mechanical Engineering University of Washington Seattle Washington 98195-2600 USA

Sol-gel based soft lithography technique has been developed to pattern a variety of ferroelectric pb（Zr0.52Ti0.48）O3（pZT） microstructures,with feature size approaching 180 nm and good pattern transfer between the master mold and patterned films.X-ray diffraction and high-resolution transmission electron microscopy confirm the perovskite structure of the patterned *** force microscopy（pFM） and switching spectroscopy piezoresponse force microscopy（SSpFM） confirm their piezoelectricity and *** as high as 2.75 nm has been observed,comparable to typical pZT *** patterned pZT microstructures are promising for a wide range of device applications.

关键词： Soft lithography piezoresponse force microscopy pb(Zr0.52Ti0.48)O3

A phenol-containing α-Diimine Ligand for Nickel-and palladium-Catalyzed Ethylene polymerization

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Chinese Journal of polymer Science 2019年第10期37卷 974-980,I0003页

作者： Chen tan wen-Min pang Chang-Le Chen Hefei National Laboratory for physical Sciences at the Microscale CAS Key Laboratory of Soft Matter Chemistry Department of Polymer Science and Engineering University of Science and Technology of China

A phenol-containing dibenzhydryl-based α-diimine ligand bearing hydroxy group on para-position of aniline moiety was designed, synthesized, and investigated in Ni-and pd-catalyzed ethylene polymerization. The Ni complex bearing hydroxy groups resulted in not only high polyethylene molecular weight(Mn up to 1.5 × 10^~6), but also significantly increased melting temperature(Tm up to 123℃) and greatly decreased branching density(33/1000 C) versus the Ni catalyst bearing OMe group on para-position of aniline moiety. This is consistent with the hypothesis that the deprotonation of the phenol moiety generated a phenoxide bearing strong electrondonating O-substituent by methylaluminoxane(MAO) cocatalyst. The pd complexes bearing hydroxy groups exhibited similar catalytic properties to those of the pd catalyst bearing OMe groups did.

关键词： α-Diimine Ethylene polymerization Electronic effect palladium Nickel

植物向重力反应中pIN-FORMED介导的生长素极性运输调控

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生物技术通报 2024年第3期40卷 25-40页

作者：王贤彭亚坤陈猛孔梦娟谭树堂中国科学技术大学生命科学与医学部生命科学学院前沿交叉科学与生物医学研究所合肥230027

植物的向性,即植物对光或重力等环境刺激信号产生的定向生长反应。在向重力性反应中,植物器官将重力感知为定向环境信号,来控制其器官的生长方向以促进生存。植物激素生长素及其极性运输在植物向重力反应中起着决定性的调控作用。质膜... 详细信息

植物的向性,即植物对光或重力等环境刺激信号产生的定向生长反应。在向重力性反应中,植物器官将重力感知为定向环境信号,来控制其器官的生长方向以促进生存。植物激素生长素及其极性运输在植物向重力反应中起着决定性的调控作用。质膜定位的生长素输出蛋白pIN-FORMED(pIN)通过动态的亚细胞极性定位,改变生长素运输的方向以响应环境刺激,由此植物器官间建立的生长素浓度梯度是细胞差异化伸长和器官弯曲的基础,来调控植物的形态建成和生长发育过程。本文主要讨论发生在植物重力感受细胞内早期重力感知和信号转导机制的最新研究进展、pIN介导的生长素极性运输、pIN的极性定位以及质膜蛋白丰度的调控机制等。

关键词：向重力性 pIN 生长素转运极性内膜运输

picoRio:An Open-Source,RISC-V Small-Board Computer to Elevate the RISC-V Software Ecosystem

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Tsinghua Science and Technology 2021年第3期26卷 384-386页

作者： Zhangxi tan Lin Zhang David patterson Yi Li RISC-V International Open Source Laboratory Tsinghua-Berkeley Shenzhen InstituteShenzhen 518055China

picoRioTM is an open-source project stewarded by the RISC-V International Open Source(RIOS)laboratory—***—a nonprofit research lab at Tsinghua-Berkeley Shenzhen Institute(TBSI).The RIOS Lab uses collaborative engineering from both academia and industry to elevate the RISC-V software and hardware *** pico Rio,we create an open,affordable,Linux-capable RISC-V hardware platform to aid software developers in porting many modern programs that require Javascript or *** Rio will build upon high-quality Ips and software components from expert industry engineers and academic *** Rio is not proprietary to any specific vendor and platform,and will have complete documentation that can help people to build quality products in a short amount of *** plan is to ship pico Rio 1.0 in 1H2021.

关键词： hardware Open Berkeley

Electrically driven chip cooling device using hybrid coolants of liquid metal and aqueous solution

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Science China(Technological Sciences) 2016年第2期59卷 301-308页

作者： tan SiCong ZHOU YiXin wANG Lei LIU Jing Beijing Key Lab of Cryo Biomedical Engineering and Key Lab of Cryogenics Technical Institute of Physics and ChemistryChinese Academy of Sciences Department of Biomedical Engineering School of Medicine Tsinghua University

Heat dissipation of electronic devices keeps as a tough issue for decades. As the most classical coolant in a convective heat transfer process, water has been widely adopted which however inherits with limited thermal conductivity and relies heavily on mechanical pump. As an alternative, the room temperature liquid metal was increasingly emerging as an important coolant to realize much stronger enhanced heat transfer. However, its thermal capacity is somewhat lower than that of water, which may restrict the overall cooling performance. In addition, the high cost by taking too much amount of liquid metal into the device also turns out to be a big concern for practical purpose. Here, through combining the individual merits from both the liquid metal with high conductivity and water with large heat capacity, we proposed and demonstrated a new conceptual cooling de- vice that integrated hybrid coolants, radiator and annular channel together for chip thermal management. particularly, the elec- trically induced actuation effect of liquid metal was introduced as the only flow driving strategy, which significantly simplified the whole system design. This enables the liquid metal sphere and its surrounding aqueous solution to be quickly accelerated to a large speed under only a very low electric voltage. Further experiments demonstrated that the cooling device could effective- ly maintain the temperature of a hotpot （3.15 w/cm2） below 55℃ with an extremely small power consumption rate （0.8 w）. Sev- eral situations to simulate the practical working of the device were experimentally explored and a theoretical thermal resistance model was established to evaluate its heat transfer performance. The present work suggests an important way to make highly compact chip cooling device, which can be flexibly extended into a wide variety of engineering areas.

关键词： chip cooling liquid metal hybrid coolants electrically induced actuation thermal management aqueous solution

金属有机框架有机配体官能团吸/给电子效应及熔点调控

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硅酸盐学报 2024年第8期52卷 2559-2565页

作者：李续高成伟周添跃谭林玲康世亮焦清林常规宁波大学高等技术研究院红外材料及器件实验室浙江宁波315211 浙江省光电探测材料及器件重点实验室浙江宁波315211 硅酸盐建筑材料国家重点实验室武汉理工大学武汉430070

金属有机框架(MOF)玻璃,作为第4种熔融淬冷玻璃,在能源、气体分离等领域都具有潜在的应用价值。但目前只有部分MOF可制备成为玻璃,且其熔点与分解温度相近,导致玻璃成品中分解杂质多,制备能耗高。基于有机配体上官能团的吸/给电子效应,... 详细信息

金属有机框架(MOF)玻璃,作为第4种熔融淬冷玻璃,在能源、气体分离等领域都具有潜在的应用价值。但目前只有部分MOF可制备成为玻璃,且其熔点与分解温度相近,导致玻璃成品中分解杂质多,制备能耗高。基于有机配体上官能团的吸/给电子效应,通过调控咪唑基配体的种类和含量,调节配体与金属中心的配位键强弱,可将TIF-4的熔点从375℃降至295℃。证明了有机配体上官能团吸/给电子效应对MOF熔点调控的有效性和通用性,为指导开发更多MOF玻璃提供了理论基础,有利于促进MOF玻璃的实际应用。

关键词：金属有机框架玻璃熔点调控玻璃化熔融淬冷分解温度

prediction of nonlinear pilot-induced oscillation using an intelligent human pilot model

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Chinese Journal of Aeronautics 2019年第12期32卷 2592-2611页

作者： Shuting XU wenqian tan Xiangju QU Cheng ZHANG School of Aeronautic Science and Engineering Beihang University

This paper proposes a method to predict nonlinear pilot-Induced Oscillation(pIO)using an intelligent human pilot *** method is based on a scalogram-based pIO metric,which uses wavelet transforms to analyze the nonlinear characteristics of a time-varying *** intelligent human pilot model includes three modules:perception module,decision and adaptive module,and execution *** and adaptive features,including a neural network receptor,fuzzy decision and adaptation,are also introduced into the human pilot model to describe the behavior of the human pilot accommodating the nonlinear ***,an algorithm is proposed to describe the procedure of the pIO prediction method with nonlinear evaluation *** prediction results obtained by numerical simulation are compared with the assessments of flight test data to validate the utility of the *** flight test data were generated in the evaluation of the Smart-Cue/Smart-Gain,which is capable of reducing the pIO tendencies *** results show that the method can be applied to predict the nonlinear pIO events by human pilot model simulation.

关键词： pilot-induced oscillation Human pilot model Flight simulation Human-vehicle system Nonlinear system

Efficient and effective Bayesian network local structure learning

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Frontiers of Computer Science 2014年第4期8卷 527-536页

作者： Jianjun YANG Yunhai TONG Zitian wANG Shaohua tan Center for Information Science Peking University Beijing 100871 China Agricultural Bank of China Beijing 100871 China

In this paper, we propose a more efficient Bayesian network structure learning algorithm under the framework of score based local learning （SLL）. Our algorithm significantly improves computational efficiency by restricting the neighbors of each variable to a small subset of candidates and storing necessary information to uncover the spouses, at the same time guaranteeing to find the optimal neighbor set in the same sense as SLL. The algorithm is the- oretically sound in the sense that it is optimal in the limit of large sample size. Empirical results testify its improved speed without loss of quality in the learned structures.

关键词： local structure learning Bayesian network Markov blanket