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Hot deformation behavior of a novel bimetal consisting of BTW1 and Q345R characterized by processing

Pengtao LIU, Lifeng MA, Weitao JIA, Tao WANG, Guanghui ZHAO

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 4,   Pages 489-495 doi: 10.1007/s11465-019-0554-x

Abstract: Only a few studies have been conducted on the flow behavior of the novel BTW1/Q345R bimetal, which isIn this work, compression tests were conducted on BTW1/Q345R bimetal at a temperature range of 950 °CThe computed apparent activation energy of the BTW1/Q345R bimetal was 360 kJ/mol, and processing maps/Q345R bimetal.Results showed that thermal deformation of the BTW1/Q345R bimetal should proceed when the temperature

Keywords： BTW1/Q345R bimetal     constitutive equation     processing map     work hardening    

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R158Q and G212S, novel pathogenic compound heterozygous variants in of Gitelman syndrome

Frontiers of Medicine 2022, Volume 16, Issue 6,   Pages 932-945 doi: 10.1007/s11684-022-0963-9

Abstract: The prediction of mutant protein showed that p.R158Q and p.G212S could alter protein’s three-dimensionalMeanwhile, we conducted a compound heterozygous model—Ncc R156Q/G210S mice corresponding to human NCCR158Q/G212S.The hydrochlorothiazide test showed a loss of function of mutant Ncc in NccR156Q/G210S miceThese findings indicated that R158Q and G212S variants of SLC12A3 were pathogenic variants of

Keywords： Gitelman syndrome     mouse model     compound heterozygous     hypokalemia     Slc12a3    

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Alkali-thermal gasification and hydrogen generation potential of biomass

Tong, Ramin R. Farnood, Charles Q. Jia

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 3,   Pages 369-378 doi: 10.1007/s11705-017-1662-y

Abstract: Generating hydrogen gas from biomass is one approach to lowering dependencies on fossil fuels for energy and chemical feedstock, as well as reducing greenhouse gas emissions. Using both equilibrium simulations and batch experiments with NaOH as a model alkaline, this study established the technical feasibility of converting various biomasses (e.g., glucose, cellulose, xylan and lignin) into H -rich gas via catalyst-free, alkali-thermal gasification at moderate temperatures (as low as 300 °C). This process could produce more H with less carbon-containing gases in the product than other comparable methods. It was shown that alkali-thermal gasification follows , with carbonate being the solid product which is different from the one suggested in the literature. Moreover, the concept of hydrogen generation potential (H -GP)—the maximum amount of H that a biomass can yield, was introduced. For a given biomass C H O , the H -GP would be moles of H . It was demonstrated experimentally that the H -GP was achievable by adjusting the amounts of H O and NaOH, temperature and pressure.

Keywords： hydrogen generation potential     biomass     lignocellulose     alkali-thermal gasification     sodium hydroxide    

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Modeling of alkali-silica reaction in concrete: a review

WANG, Q.C. SUN, C.H. ZHANG, D.R.J. OWEN

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 1,   Pages 1-18 doi: 10.1007/s11709-012-0141-2

Abstract: This paper presents a comprehensive review of modeling of alkali-silica reaction (ASR) in concrete. Such modeling is essential for investigating the chemical expansion mechanism and the subsequent influence on the mechanical aspects of the material. The concept of ASR and the mechanism of expansion are first outlined, and the state-of-the-art of modeling for ASR, the focus of the paper, is then presented in detail. The modeling includes theoretical approaches, meso- and macroscopic models for ASR analysis. The theoretical approaches dealt with the chemical reaction mechanism and were used for predicting pessimum size of aggregate. Mesoscopic models have attempted to explain the mechanism of mechanical deterioration of ASR-affected concrete at material scale. The macroscopic models, chemo-mechanical coupling models, have been generally developed by combining the chemical reaction kinetics with linear or nonlinear mechanical constitutive, and were applied to reproduce and predict the long-term behavior of structures suffering from ASR. Finally, a conclusion and discussion of the modeling are given.

Keywords： alkali-silica reaction (ASR)     modeling     concrete     mesoscopic     macroscopic    

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Preparation of ultrathin ReS2 nanosheets and their application to Q-switched Er-doped fiber Research

Junshan He, Guohua Zeng, Shaoxian Liu, Haiming Lu, Ruixian Xie, Jingjing Qi, Lili Tao, Bo Zhou,taoll@gdut.edu.cn,zhoubo@scut.edu.cn

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 3,   Pages 287-436 doi: 10.1631/FITEE.2000339

Abstract: study the exfoliation of ultrathin ReS nanosheets from the prepared ReS powder and their application to Q-switchedduration of 2.4 μs and an output power of 1.25 mW are obtained, indicating the potential application to Q-switched

Keywords： 二硫化铼；可饱和吸收体；二维材料；调Q光纤激光器    

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Sb2Te3 topological insulator for 52 nm wideband tunable Yb-doped passively Q-switched Research

Tao Wang, Qiang Yu, Kun Guo, Xinyao Shi, Xuefen Kan, Yijun Xu, Jian Wu, Kai Zhang, Pu Zhou,wujian15203@163.com,kzhang2015@sinano.ac.cn

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 3,   Pages 287-436 doi: 10.1631/FITEE.2000577

Abstract: saturable absorber (SA) of the family was first applied experimentally in a wideband tunable passively Q-switchedMeanwhile, stable wavelength-tunable passive Q-switching pulse operation was obtained in a Yb-doped fiber

Keywords： 拓扑绝缘体；Sb2Te3；光纤激光；被动调Q激光；波长可调谐激光    

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Minimax Q-learning design for H∞ control of linear discrete-time systems Research Articles

Xinxing LI, Lele XI, Wenzhong ZHA, Zhihong PENG,lixinxing_1006@163.com,xilele.bit@gmail.com,zhawenzhong@126.com,peng@bit.edu.cn

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 3,   Pages 438-451 doi: 10.1631/FITEE.2000446

Abstract: The method is an effective approach for attenuating the effect of disturbances on practical systems, but it is difficult to obtain the ler due to the nonlinear Hamilton–Jacobi–Isaacs equation, even for linear systems. This study deals with the design of an ler for linear discrete-time systems. To solve the related game algebraic Riccati equation (GARE), a novel model-free method is developed, on the basis of an offline algorithm, which is shown to be Newton’s method for solving the GARE. The proposed method, which employs off-policy , learns the optimal control policies for the controller and the disturbance online, using only the state samples generated by the implemented behavior policies. Different from existing -learning methods, a novel gradient-based policy improvement scheme is proposed. We prove that the method converges to the saddle solution under initially admissible control policies and an appropriate positive learning rate, provided that certain persistence of excitation (PE) conditions are satisfied. In addition, the PE conditions can be easily met by choosing appropriate behavior policies containing certain excitation noises, without causing any excitation noise bias. In the simulation study, we apply the proposed method to design an load-frequency controller for an electrical power system generator that suffers from load disturbance, and the simulation results indicate that the obtained load-frequency controller has good disturbance rejection performance.

Keywords： H∞ control     Zero-sum dynamic game     Reinforcement learning     Adaptive dynamic programming     Minimax Q-learning    

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Non-iterative parameter estimation of the 2R-1Cmodel suitable for low-cost embedded hardware Article

Mitar SIMIĆ, Zdenka BABIĆ, Vladimir RISOJEVIĆ, Goran M. STOJANOVIĆ

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 3,   Pages 476-490 doi: 10.1631/FITEE.1900112

Abstract: Parameter estimation of the 2R-1C model is usually performed using iterative methods that require high-performanceThe 2R-1C model parameters are subsequently calculated from the real and imaginary parts of the measuredComparative analysis conducted on the impedance data of the 2R-1C model obtained in both simulation andMoreover, we compared the QINIPE and the complex nonlinear least squares (CNLS) estimation of the 2R-1C model parameters.

Keywords： 2R-1C model     Embedded systems     Parameter estimation     Non-iterative methods     Quadratic interpolation    

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Influence of β-elemene on the secretion of angiotensin II and expression of AT1R in hepatic stellate

Ling YANG, Rui ZHU, Qingjing ZHU, Dan DAN, Jin YE, Keshu XU, Xiaohua HOU

Frontiers of Medicine 2009, Volume 3, Issue 1,   Pages 36-40 doi: 10.1007/s11684-009-0020-y

Abstract: (AT1R) in hepatic stellate cells (HSCs)The mRNA expression of AT1R at 4, 12 and 24 h after treatment was detected by reverse transcription-polymeraseThe protein expression of AT1R was detected by western blot.( <0.05), but 10 mg/L β-elemene had no such effect. β-elemene significantly reduced the amount of AT1RThe expression of AT1R protein also decreased after the treatment with β-elemene for 24 h. β-elemene

Keywords： liver cirrhosis     beta-elemene     hepatic stellate cells     angiotensin II     receptor     angiotensin     type 1    

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Learning natural ordering of tags in domain-specific Q&A sites

Junfang Jia, Guoqiang Li,jiajunfang816@163.com,li.g@sjtu.edu.cn

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 2,   Pages 141-286 doi: 10.1631/FITEE.1900645

Abstract: In this paper, we focus on the ing of tags in domain-specific Q&A sites.We study tag sequences of millions of questions in four Q&A sites, i.e., CodeProject, SegmentFault, BiostarsOur results show that users of these Q&A sites can develop implicit consensus about in which order theyOur study opens the path to improve existing tag recommendation and Q&A site navigation by leveraging

Keywords： Question and answering (Q&     A) sites     Tagging     Natural order     Skip gram    

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PAK1 is a novel cardiac protective signaling molecule

Yunbo Ke,Xin Wang,Xu Yu Jin,R. John Solaro,Ming Lei

Frontiers of Medicine 2014, Volume 8, Issue 4,   Pages 399-403 doi: 10.1007/s11684-014-0380-9

Abstract: review here the novel cardiac protective effects of the multifunctional enzyme, p21-activated kinase 1(PAK1), a member of a serine/threonine protein kinase family.Despite the large body of evidence from studies in noncardiac tissue indicating that PAK1 activity iskey in the regulation of a number of cellular functions, the role of PAK1 in the heart has only beenWe discuss the anti-adrenergic and antihypertrophic cardiac protective effects of PAK1, as well as its

Keywords： p21-activated kinase 1 (PAK1)     heart    

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Development of a new method for RMR and Q classification method to optimize support system in tunneling

Asghar RAHMATI,Lohrasb FARAMARZI,Manouchehr SANEI

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 4,   Pages 448-455 doi: 10.1007/s11709-014-0262-x

Abstract: Rock mass classification system is very suitable for various engineering design and stability analysis. classification method is confirmed by Japan Highway Public Corporation that this method can figure out either strength or deformability of rock mass, further appropriating the amount of rock bolts, thickness of shotcrete, and size of pitch of steel ribs just after the blasting procedure. Based on these advantages of method, in this study, according to data of five deep and long tunnels in Iran, two equations for estimating the value of method from and classification systems were developed. These equations as a new method were able to optimize the support system for and classification systems. From classification and its application in these case studies, it is pointed out that the method for the design of support systems in underground working is more reliable than the and classification systems.

Keywords： JH classification     Q and RMR classification     new method    

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An approach for evaluating fire resistance of high strength Q460 steel columns

Wei-Yong WANG, Guo-Qiang LI, Bao-lin YU

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 1,   Pages 26-35 doi: 10.1007/s11709-014-0239-9

Abstract: To develop a methodology for evaluating fire resistance of high strength Q460 steel columns, the loadbearing capacity of high strength Q460 steel columns is investigated.evaluating load bearing capacity of mild steel columns at room temperature is extended to high strength Q460steel columns with due consideration to high temperature properties of high strength Q460 steel.The critical temperature of high strength Q460 steel column is presented and compared with mild steel

Keywords： high strength Q460 steel     load bearing capacity     temperature    

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Theory and techniques for "intellicise" wireless networks Editorial

Ping ZHANG, Mugen PENG, Shuguang CUI, Zhaoyang ZHANG, Guoqiang MAO, Zhi QUAN, Tony Q. S.

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 1,   Pages 1-4 doi: 10.1631/FITEE.2210000

Abstract: background, several important tendencies have emerged in the development of 6G wireless communications: 1.
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MDLB: a metadata dynamic load balancing mechanism based on reinforcement learning Research Articles

Zhao-qi Wu, Jin Wei, Fan Zhang, Wei Guo, Guang-wei Xie,17034203@qq.com

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 7,   Pages 963-1118 doi: 10.1631/FITEE.1900121

Abstract: With the growing amount of information and data, s have been widely used in many applications, including the Google File System, Amazon S3, Hadoop Distributed File System, and Ceph, in which load balancing of plays an important role in improving the input/output performance of the entire system. Unbalanced load on the server leads to a serious bottleneck problem for system performance. However, most existing load balancing strategies, which are based on subtree segmentation or hashing, lack good dynamics and adaptability. In this study, we propose a (MDLB) mechanism based on (RL). We learn that the algorithm and our RL-based strategy consist of three modules, i.e., the policy selection network, load balancing network, and parameter update network. Experimental results show that the proposed MDLB algorithm can adjust the load dynamically according to the performance of the servers, and that it has good adaptability in the case of sudden change of data volume.

Keywords： 面向对象的存储系统；元数据；动态负载均衡；强化学习；Q_learning    

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Title Author Date Type Operation

Hot deformation behavior of a novel bimetal consisting of BTW1 and Q345R characterized by processing

Pengtao LIU, Lifeng MA, Weitao JIA, Tao WANG, Guanghui ZHAO

Journal Article

R158Q and G212S, novel pathogenic compound heterozygous variants in of Gitelman syndrome

Journal Article

Alkali-thermal gasification and hydrogen generation potential of biomass

Tong, Ramin R. Farnood, Charles Q. Jia

Journal Article

Modeling of alkali-silica reaction in concrete: a review

WANG, Q.C. SUN, C.H. ZHANG, D.R.J. OWEN

Journal Article

Preparation of ultrathin ReS2 nanosheets and their application to Q-switched Er-doped fiber

Junshan He, Guohua Zeng, Shaoxian Liu, Haiming Lu, Ruixian Xie, Jingjing Qi, Lili Tao, Bo Zhou,taoll@gdut.edu.cn,zhoubo@scut.edu.cn

Journal Article

Sb2Te3 topological insulator for 52 nm wideband tunable Yb-doped passively Q-switched

Tao Wang, Qiang Yu, Kun Guo, Xinyao Shi, Xuefen Kan, Yijun Xu, Jian Wu, Kai Zhang, Pu Zhou,wujian15203@163.com,kzhang2015@sinano.ac.cn

Journal Article

Minimax Q-learning design for H∞ control of linear discrete-time systems

Xinxing LI, Lele XI, Wenzhong ZHA, Zhihong PENG,lixinxing_1006@163.com,xilele.bit@gmail.com,zhawenzhong@126.com,peng@bit.edu.cn

Journal Article

Non-iterative parameter estimation of the 2R-1Cmodel suitable for low-cost embedded hardware

Mitar SIMIĆ, Zdenka BABIĆ, Vladimir RISOJEVIĆ, Goran M. STOJANOVIĆ

Journal Article

Influence of β-elemene on the secretion of angiotensin II and expression of AT1R in hepatic stellate

Ling YANG, Rui ZHU, Qingjing ZHU, Dan DAN, Jin YE, Keshu XU, Xiaohua HOU

Journal Article

Learning natural ordering of tags in domain-specific Q&A sites

Junfang Jia, Guoqiang Li,jiajunfang816@163.com,li.g@sjtu.edu.cn

Journal Article

PAK1 is a novel cardiac protective signaling molecule

Yunbo Ke,Xin Wang,Xu Yu Jin,R. John Solaro,Ming Lei

Journal Article

Development of a new method for RMR and Q classification method to optimize support system in tunneling

Asghar RAHMATI,Lohrasb FARAMARZI,Manouchehr SANEI

Journal Article

An approach for evaluating fire resistance of high strength Q460 steel columns

Wei-Yong WANG, Guo-Qiang LI, Bao-lin YU

Journal Article

Theory and techniques for "intellicise" wireless networks

Ping ZHANG, Mugen PENG, Shuguang CUI, Zhaoyang ZHANG, Guoqiang MAO, Zhi QUAN, Tony Q. S.

Journal Article

MDLB: a metadata dynamic load balancing mechanism based on reinforcement learning

Zhao-qi Wu, Jin Wei, Fan Zhang, Wei Guo, Guang-wei Xie,17034203@qq.com

Journal Article