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Nonlocality Sudden Birth and Transfer in System and Environment

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Chinese Physics Letters 2011年第3期28卷 13-16页

作者： qiu Liang Department of Physics China University of Mining and TechnologyXuzhou 221008

Dynamics of the nonlocality measured by the violation of Svetlichny's Bell-type inequality is investigated in the non-Markovian *** phenomenon of nonlocality sudden birth for the atoms and the reservoirs is *** evolution of the nonlocality among the atoms or the reservoirs depends on the choice of the atom detuning from the cavity pseudomode,the cavity pseudomode decay and the rotation *** the small pseudomode decay in the near-resonance regime,the initial atomic nonlocality is completely transferred to the reservoirs ultimately.

关键词： decay inequality rotation

Modeling the Wettability of Microstructured Hydrophobic Surface Using Multiple-relaxation-time Lattice Boltzmann Method

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Journal of Bionic Engineering 2022年第5期19卷 1460-1471页

作者： Lei Tian Liuchao qiu College of Water Resources and Civil Engineering China Agricultural UniversityBeijing 100083China

Wetting properties are significant for a hydrophobic surface and normally characterized by the equilibrium contact *** this manuscript,a mesoscopic method based on multiphase multiple-relaxation-time Lattice Boltzmann method has been presented and applied to simulate the contact angle at three-phase interfaces of a solid surface with micro-pillar *** influence of different parameters including pillar height,pillar width,inter-pillar spacing,intrinsic contact angle and the volume of the liquid drop on the equilibrium contact angle has been comprehensively *** effect of geometry parameters of the micro-pillar structure on the wetting transition from Cassie–Baxter state to Wenzel state has also been *** results indicate that when the inter-pillar spacing is less than a certain value or the pillar height is greater than a certain value,the contact form between the droplet and the surface satisfies the Cassie–Baxter *** the contact form satisfies the Cassie–Baxter state,the contact angle gradually increases with the increase of the inter-pillar spacing;the contact angle does not change significantly with the pillar height;the contact angle gradually decreases and approaches the intrinsic contact angle with the pillar width ***,the contact angle increases with the increase of the intrinsic contact angle,and the contact angle is not sensitive to the change of droplet volume when the droplet volume is between 0.5 and10μl.

关键词： Bioinspired hydrophobic surface Wettability Cassie-Baxter state Wenzel state Lattice Boltzmann method Mesoscale simulation

LiFE:Deep Exploration via Linear-Feature Bonus in Continuous Control

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Tsinghua Science and Technology 2023年第1期28卷 155-166页

作者： Jiantao qiu Yu Wang Department of Electronic Engineering and Beijing National Research Center for Information Science and Technology(BNRist) Tsinghua UniversityBeijing 100084China

Reinforcement Learning(RL)algorithms work well with well-defined rewards,but they fail with sparse/deceptive rewards and require additional exploration *** work introduces a deep exploration method based on the Upper Confidence Bound(UCB)*** proposed method can be plugged into actor-critic algorithms that use deep neural networks as a *** on the conclusion of the regret bound under the linear Markov decision process approximation,we use the feature matrix to calculate the UCB bonus for deep *** proposed method is equivalent to the count-based exploration method in special cases and is suitable for general *** method uses the last d-dimensional feature vector in the critic network and is easy to *** design a simple task,“swim”,to demonstrate the principle of the proposed method to achieve exploration in sparse/deceptive reward ***,we perform an empirical evaluation on sparse/deceptive reward version gym environments and Ackermann robot control *** evaluation results verify that the proposed algorithm can perform effective deep explorations in sparse/deceptive reward tasks.

关键词： Reinforcement Learning(RL) Neural Network(NN) Upper Confidence Bound(UCB)

Be a force for science: an interview with Barbara Schaal and Bill Moran

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National Science Review 2019年第4期6卷 839-842页

作者： Jane qiu NSR

The American Association for the Advancement of Science (AAAS), the world’s largest general science membership society, is an international non-profit organization with the stated goals of advancing science, engineering and innovation for the benefit of all people, communicating science broadly, defending scientific freedom, providing a voice for science on societal issues, strengthening and diversifying the science and technology workforce, and advancing international cooperation in science. Founded in 1848, AAAS today has individual members from around 100 countries, and is the publisher of the Science family of journals, including the open-access journal Science

关键词： Be a force for science an interview with Barbara Schaal and Bill Moran

South China Sea: the gateway to China's deep-sea ambitions

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National Science Review 2017年第4期4卷 658-663页

作者： Jane qiu writes for NSR from Beijing.

For most parts of its history,China has largely turned its back on ocean *** after it started oceanographic research in the 1950s,the focus was mostly on coastal and offshore *** this changed a decade ago when the cou... 详细信息

关键词： South China Sea the gateway to China’s deep-sea ambitions SCS

Evaluation of high-temperature tensile behavior for metal foils by a novel resistance heating assisted tensile testing system using samples with optimized structures

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Journal of Materials Science & Technology 2021年第35期94卷 216-229页

作者： qiu Zheng Tsuyoshi Furushima Department of Mechanical and Biofunctional Systems Institute of Industrial ScienceThe University of Tokyo4-6-1 KomabaMeguro 153-8505TokyoJapan

To evaluate the tensile behavior of metal foils by resistance heating(RH)assisted tensile testing system accurately,this study proposed to embed a digital image correlation(DIC)system with laser speckles for the measurement of full-field strain ***,the sample structures were optimized to achieve uniform temperature and strain *** infrared camera was used to monitor the temperature *** samples instead of dog-bone shaped samples were proposed.A model for calculating the temperature distribution was established to optimize the sample *** parameters that influence the temperature distribution and tensile behavior were *** results,compared to the strain measured by a non-contact extensometer,the maximum deviation of the strain measured by DIC was less than 6%when the nominal strain was larger than *** is confirmed that the proposed tensile testing system is reliable for measuring the temperature and full-field strain *** shape influenced temperature distributions of smaller samples while it almost had no influence on the temperature distributions of larger *** temperature difference was not affected by the material type but by the sample *** proposed rectangular shape was validated to be feasible for RH assisted tensile *** sample length was successfully optimized for a more uniform temperature distribution by the established *** the tensile deformation was not influenced by the sample shape,the temperature distribution resulted in a non-uniform strain distribution before achieving ultimate tensile *** effective sample length between two clamping jigs contributed to a more uniform temperature distribution and material deformation.A more accurate evaluation of high-temperature tensile behavior for metal foils can be achieved by the proposed RH assisted tensile testing system using rectangular samples with an optimized structure.

关键词： High temperature Metal foil Resistance heating Sample structure Tensile behavior

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考虑盐度影响的粉煤灰固化软土直剪试验

江苏大学学报（自然科学版） 2025年第1期46卷 120-124页

作者：殷杰邱文杰田雪晨江苏大学土木工程与力学学院江苏镇江212013

采用粉煤灰作为固化剂,制备了多组粉煤灰固化软土试样,其孔隙水中盐度分别为0%、2%、4%和6%,养护龄期分别为3 h、7 d和28 d.通过开展室内直剪试验,探讨盐度对粉煤灰固化软土强度特性的影响.试验结果表明:竖向固结压力为50 kPa时,粉煤灰... 详细信息

采用粉煤灰作为固化剂,制备了多组粉煤灰固化软土试样,其孔隙水中盐度分别为0%、2%、4%和6%,养护龄期分别为3 h、7 d和28 d.通过开展室内直剪试验,探讨盐度对粉煤灰固化软土强度特性的影响.试验结果表明:竖向固结压力为50 kPa时,粉煤灰固化软土的剪应力与剪切位移关系曲线呈现软化型,而在竖向固结压力为200 kPa时曲线呈现硬化型;高盐度试样具有较低的峰值剪应力和残余强度,表明高盐度对粉煤灰固化软土强度特性具有不利的影响;随着盐度增加,各养护龄期下软土试样的抗剪强度、黏聚力和内摩擦角的曲线均呈现近似线性下降的趋势,主要原因在于盐度的增加抑制了粉煤灰中活性成分的水化反应.

关键词：粉煤灰软土固化剂盐度养护龄期室内直剪试验

Current situation and development trend of titanium metal industry in China

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International Journal of Minerals,Metallurgy and Materials 2022年第4期29卷 599-610页

作者： Guanzhou qiu Yufeng Guo School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083China

Titanium metal and alloy are key materials for technological development,which significantly promote the development of the hightech economy in *** consumption of high-end titanium materials and the developmental level of the titanium industry are important indexes of a country’s comprehensive ***,at present,the application amount and level of high-end titanium materials in China are limited by many factors,including the dependence of raw materials on imports,high processing cost,and structural imbalance of *** on the characteristics of titanium resources and the current situation of the titanium industry,the whole titanium industrial chain in China should be *** the quality of raw materials is important to produce low-cost,high-end titanium materials using titanium resources with high calcium and magnesium contents in the Panxi *** addition,the steel-titanium joint production is a vital step to reduce the processing cost of titanium ***,the consumption structure of titanium materials should be completed to expand their *** implementing these suggestions,the overall level of China’s titanium industry will be greatly improved,thereby rapidly establishing an advanced scientific and technological country.

关键词： titanium titanium resources prodcution cost high-end titanium material steel-titanium joint prodcution

Vectorial Ekeland variational principle for systems of equilibrium problems and its applications

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Science China Mathematics 2017年第7期60卷 1259-1280页

作者： qiu JingHui School of Mathematical Sciences Soochow University Suzhou 215006 China

For a family of vector-valued bifunctions,we introduce the notion of sequentially lower monotonity,which is strictly weaker than the lower semi-continuity of the second variables of the ***,we give a general version of vectorial Ekeland variational principle(briefly,denoted by EVP) for a system of equilibrium problems,where the sequentially lower monotone objective bifunction family is defined on products of sequentially lower complete spaces(concerning sequentially lower complete spaces,see Zhu et al(2013)),and taking values in a quasi-ordered locally convex ***,the perturbation consists of a subset of the ordering cone and a family {p_i}_(i∈I) of negative functions satisfying for each i∈I,p_i(x_i,y_i) = 0 if and only if x_i=y_*** the general version,we can deduce several particular equilibrium versions of EVP,which can be applied to show the existence of solutions for countable systems of equilibrium *** particular,we obtain a general existence result of solutions for countable systems of equilibrium problems in the setting of sequentially lower complete *** weakening the compactness of domains and the lower semi-continuity of objective bifunctions,we extend and improve some known existence results of solutions for countable system of equilibrium problems in the setting of complete metric spaces(or Fréchet spaces).When the domains are non-compact,by using the theory of angelic spaces(see Floret(1980)),we generalize some existence results on solutions for countable systems of equilibrium problems by extending the framework from reflexive Banach spaces to the strong duals of weakly compactly generated spaces.

关键词： Ekeland variational principle equilibrium problem system of equilibrium problems quasi-ordered locally convex space angelic space sequentially lower complete space