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Nighttime Construction Noise Disturbance Compensation in Beijing:Taking the Tongzhou New Campus Project of Renmin University of China as an Example
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作者 Feng Zhou 《Journal of World Architecture》 2023年第6期82-88,共7页
By examining a specific case of compensating for nighttime construction noise in Beijing’s construction projects,we explored how the costs of mitigating construction noise disturbance could be fairly distributed amon... By examining a specific case of compensating for nighttime construction noise in Beijing’s construction projects,we explored how the costs of mitigating construction noise disturbance could be fairly distributed among multiple construction projects near residential areas.In this process,the local government played a crucial coordinating role.According to regulations,construction units must include the costs of preventing and controlling construction noise pollution in the project cost.The construction contract should clearly specify the construction unit’s responsibility for noise pollution prevention and control.After signing the contract,the construction unit should promptly undertake relevant measures to minimize disturbances caused by nighttime construction,aiming to reduce the adverse impacts on the community and ensure the smooth progress of the construction project. 展开更多
关键词 Construction noise disturbance compensation Construction management Noise Civil disturbances
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Celebrating the 20th Anniversary of the Department of Chemistry at Renmin University of China
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作者 WANG Yapei 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2024年第5期761-763,共3页
Established in 2004,the Department of Chemistry was the first entity of the School of Science at Renmin University of China,marking the inception of a new era in the university's pursuit of scientific excellence.I... Established in 2004,the Department of Chemistry was the first entity of the School of Science at Renmin University of China,marking the inception of a new era in the university's pursuit of scientific excellence.It embarked on its academic mission by admitting its first batch of undergraduate and master's students in the same year,and by 2008,it had leaped forward by enrolling its first doctoral candidates.A decade after its establishment,in 2015,the department began to enter the top 1%of global chemistry disciplines in the ESI rankings,a first for Renmin University of China.In 2022,the major of chemistry was awarded as the national first-class undergraduate major construction site. 展开更多
关键词 BATCH PURSUIT UNDERGRADUATE
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DEVELOPING LEGAL SERVICES TO SUPPORT FREE TRADE CONFERENCE BY CENTRE FOR COMMON LAW RENMIN UNIVERSITY OF CHINA
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作者 袁慧 《Frontiers of Law in China-Selected Publications from Chinese Universities》 2017年第2期333-335,共3页
On March 19, 2017, the Centre for Common Law of Renmin University of China and the Great Britain China Centre held a specialist one-day legal conference on "Developing Legal Service to Support Free Trade" in Shangha... On March 19, 2017, the Centre for Common Law of Renmin University of China and the Great Britain China Centre held a specialist one-day legal conference on "Developing Legal Service to Support Free Trade" in Shanghai. Over 30 legal academics, practitioners and policy-advisors from four jurisdictions: England and Wales, Scotland, China and Hong Kong attended the conference, including representatives of the Law Society of England and Wales, the Law Society of Scotland, the Bar Council of England and Wales, the Hong Kong Bar Association, the Law Society of Hong Kong, the All China Lawyers Association, the Shanghai Lawyers Association, and the Beijing Lawyers Association, etc. 展开更多
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MATTHEW ADLER: THE COST-BENEFIT ANALYSIS AND DISTRIBUTIONAL WEIGHTS RENMIN UNIVERSITY INTERNATIONAL VIRTUAL WORKSHOP SERIES (2014)
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作者 QUAN Jiahui 《Frontiers of Law in China-Selected Publications from Chinese Universities》 2015年第2期399-400,共2页
On November 6, 2014, the 4th Renmin University International Virtual Workshop (RUIVW) was held as the second Renmin-Duke Law Workshop Series at Renmin Law School. Scholars from Renmin and Duke Law Schools, including... On November 6, 2014, the 4th Renmin University International Virtual Workshop (RUIVW) was held as the second Renmin-Duke Law Workshop Series at Renmin Law School. Scholars from Renmin and Duke Law Schools, including Paul Haagen, ZHANG Taisu, GUO Rui, LIU Junhai, YANG Dong, HU Tianlong, YAO Haifang, XIONG Bingwan and YANG Guang, participated in the workshop to discuss Professor Matthew D. Adler's (Duke Law School) paper on the cost-benefit analysis (hereinafter "the CBA") and distributional weights. GUO Rui (Renmin Law School) served as the moderator for the workshop. 展开更多
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INTERNATIONAL CONFERENCE ON "MODERNITY AND CHINESE LEGAL CULTURE" HELD AT RENMIN UNIVERSITY OF CHINA LAW SCHOOL
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作者 尤陈俊 叶一舟 《Frontiers of Law in China-Selected Publications from Chinese Universities》 2013年第4期862-871,共10页
The legal reform of the late Qing Dynasty that took place more than one hundred years ago has usually been considered as the starting point of the transformation and modernization of Chinese legal culture. Following t... The legal reform of the late Qing Dynasty that took place more than one hundred years ago has usually been considered as the starting point of the transformation and modernization of Chinese legal culture. Following that, both the Republic of China's legal system, and the Chinese legal system drawing on Western experience since the opening-up, have been (to a large extent) developed by the purpose of pursuing modemity. Hence, the relationship between modernity and Chinese legal culture is the crucial point in understanding the development of Chinese legal system in modem times, and also a point in comprehending the ongoing legal system construction in a global perspective. 展开更多
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A COMMON LAW-LIKE CIVIL LAW AND A PUBLIC FACE FOR PRIVATE LAW: CHINA'S TORT LAW RENMIN UNIVERSITY INTERNATIONAL VIRTUAL WORKSHOP SERIES (2014)
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作者 全家慧 《Frontiers of Law in China-Selected Publications from Chinese Universities》 2014年第4期704-705,共2页
On June 19, 2014, the third Renmin University International Virtual Workshop (RUIVW) was held at Renmin Law School. Professor Jacques deLisle from Pennsylvania Law School gave a talk based on his recent work on Chin... On June 19, 2014, the third Renmin University International Virtual Workshop (RUIVW) was held at Renmin Law School. Professor Jacques deLisle from Pennsylvania Law School gave a talk based on his recent work on Chinese tort law -- A Common Law-like Civil Law and a Public Face for Private Law China's Tort Law in Comparative Perspective.1 The article illustrates two characteristics of China's tort law: First it has been influenced by common law and, second it contains public law elements. 展开更多
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RENMIN UNIVERSITY INTERNATIONAL VIRTUAL WORKSHOP SERIES (REVIEW 2014) ON ZHANG TAISU AND HIS NEW CULTURAL PERSPECTIVE ON CHINA'S ECONOMIC DECLINE IN SEVENTEENTH CENTURY
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作者 QUAN Jiahui 《Frontiers of Law in China-Selected Publications from Chinese Universities》 2014年第2期I0003-I0003,共1页
On 25 April 2014, the second Renmin University International Virtual Workshop (RUIVW), also the inaugural Renmin-Duke Law Workshop, was held in the Renmin Law School. Professor Zhang Taisu from Duke Law School deliv... On 25 April 2014, the second Renmin University International Virtual Workshop (RUIVW), also the inaugural Renmin-Duke Law Workshop, was held in the Renmin Law School. Professor Zhang Taisu from Duke Law School delivered a talk based on his latest work "Kinship, Property, and Agricultural Capitalism in Pre-Industrial China and England." By comparing the two types of land transactions, the dian in China and the mortgage in England, Zhang analyzed the cultural norms leading to the differences of the above property rights and its influence on China's macroeconomic decline (referred to "decline"). Scholar participants spoke highly of Zhang's work and raised several questions on it. Gao Yangguang emphasized on the distinguished differences between the psychological needs of social groups behind the above property rights and therefore doubted their comparability in this regard. Guo Rui, the host of this workshop, commented on Zhang's work from company law perspective. Jiang Dong discussed the definition of "capitalism" and its role in the causation to decline. Xiong Bingwan put forward another prospective sub-connections between cultural norms and economic outcomes. You Chenjun suggested evaluation the decline from social functions of the property transactions beyond the economic level by giving the example of tan qi, a unique kind of contract in Ming and Qing China. Pan Weijiang, from Beihang University Law School, compared the concept culture in Zhang's work to "social structure" and suggested more explanation for the impact of the Confucian on it. 展开更多
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人本、情本、民本:苏东坡的家国情怀
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作者 舒大刚 姜雪 Zhu Yuan(译) 《孔学堂》 CSSCI 2024年第2期39-51,141-152,共25页
苏轼不仅是著名的文学家,也是伟大的思想家,更是一个活生生的仁人志士,具有鲜活的家国情怀和高尚志趣。他把个人价值寄托在对国家和人民的大爱与奋斗中,以伟岸的人格承接使命担当,以家国情怀托举利民使命,以短暂一生铸就千古英名。从宇... 苏轼不仅是著名的文学家,也是伟大的思想家,更是一个活生生的仁人志士,具有鲜活的家国情怀和高尚志趣。他把个人价值寄托在对国家和人民的大爱与奋斗中,以伟岸的人格承接使命担当,以家国情怀托举利民使命,以短暂一生铸就千古英名。从宇宙观考虑,苏轼继承了夏禹以来“敬鬼敬神而远之”的传统,在天地人神之间,他主“人本”说;他承认人生而有欲,感物有情,教化的功能端在于对人情的节制,因此在人性论方面,他主“情本”说;他认为“民可亲而不可疏,可敬而不可愚”,于君臣社稷之间,他主“民本”说。通过这些方面,可以完整地透视出苏轼的宇宙观、社会观和人生观。 展开更多
关键词 苏东坡 家国情怀 宇宙观 社会观 人生观
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论传统儒家经典观
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作者 沈顺福 Zhu Yuan(译) 《孔学堂》 CSSCI 2024年第1期14-24,123-133,共22页
传统儒家以《诗》《书》等为经典。这些经典创作于圣贤,不仅反映了普遍的道与理,而且洋溢着圣贤气象。普遍的道与理构成了经典的内容,并使经典具有了知识价值,圣贤气象的洋溢不仅彰显了经典文本形式上的优美,而且能够产生感化效果。经... 传统儒家以《诗》《书》等为经典。这些经典创作于圣贤,不仅反映了普遍的道与理,而且洋溢着圣贤气象。普遍的道与理构成了经典的内容,并使经典具有了知识价值,圣贤气象的洋溢不仅彰显了经典文本形式上的优美,而且能够产生感化效果。经典体现了圣人之心。圣人之心既有气质之心,又有超越之性。气质之心产生了情感,而超越之性表现于活动中便是道与理。心统性情。在这个统一体中,普遍之性主宰了气质之心的活动,个体主体性因此被消解。传统儒家揭示了经典的三项内涵,却忽略了经典的个体主体性向度。 展开更多
关键词 经典 儒家
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Mapping Network-Coordinated Stacked Gated Recurrent Units for Turbulence Prediction 被引量:1
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作者 Zhiming Zhang Shangce Gao +2 位作者 MengChu Zhou Mengtao Yan Shuyang Cao 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2024年第6期1331-1341,共11页
Accurately predicting fluid forces acting on the sur-face of a structure is crucial in engineering design.However,this task becomes particularly challenging in turbulent flow,due to the complex and irregular changes i... Accurately predicting fluid forces acting on the sur-face of a structure is crucial in engineering design.However,this task becomes particularly challenging in turbulent flow,due to the complex and irregular changes in the flow field.In this study,we propose a novel deep learning method,named mapping net-work-coordinated stacked gated recurrent units(MSU),for pre-dicting pressure on a circular cylinder from velocity data.Specifi-cally,our coordinated learning strategy is designed to extract the most critical velocity point for prediction,a process that has not been explored before.In our experiments,MSU extracts one point from a velocity field containing 121 points and utilizes this point to accurately predict 100 pressure points on the cylinder.This method significantly reduces the workload of data measure-ment in practical engineering applications.Our experimental results demonstrate that MSU predictions are highly similar to the real turbulent data in both spatio-temporal and individual aspects.Furthermore,the comparison results show that MSU predicts more precise results,even outperforming models that use all velocity field points.Compared with state-of-the-art methods,MSU has an average improvement of more than 45%in various indicators such as root mean square error(RMSE).Through comprehensive and authoritative physical verification,we estab-lished that MSU’s prediction results closely align with pressure field data obtained in real turbulence fields.This confirmation underscores the considerable potential of MSU for practical applications in real engineering scenarios.The code is available at https://github.com/zhangzm0128/MSU. 展开更多
关键词 Convolutional neural network deep learning recurrent neural network turbulence prediction wind load predic-tion.
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Magnetic and electrical transport properties in GdAlSi and SmAlGe
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作者 巩静 王欢 +5 位作者 马小平 曾祥雨 林浚发 韩坤 王乙婷 夏天龙 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第7期554-560,共7页
We conduct a detailed examination of the magnetic and electrical transport properties in GdAlSi and SmAlGe crystals,which possess a LaPtSi-type structure(space group I4_(1)md).The magnetic susceptibility data unambigu... We conduct a detailed examination of the magnetic and electrical transport properties in GdAlSi and SmAlGe crystals,which possess a LaPtSi-type structure(space group I4_(1)md).The magnetic susceptibility data unambiguously reveal magnetic ordering below a characteristic transition temperature(T_(N)).For GdAlSi,a hysteresis loop is observed in the magnetization and magnetoresistance curves within the ab plane when the magnetic field is applied below T_(N),which is around32 K.Notable specific heat anomalies are detected at 32 K for GdAlSi and 6 K for SmAlGe,confirming the occurrence of magnetic transitions.In addition,the extracted magnetic entropy at high temperatures is consistent with the theoretical value of Rln(2J+1) for J=7/2 in Gd^(3+) and J=5/2 in Sm^(3+),respectively.SmAlGe also exhibits Schottky-like specific heat contributions.Additionally,both GdAlSi and SmAlGe exhibit positive magnetoresistance and a normal Hall effect. 展开更多
关键词 crystal growth MAGNETISM magnetotransport properties specific heat
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Coexistence of Dirac and Weyl points in non-centrosymmetric semimetal NbIrTe_(4)
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作者 刘清馨 付阳 +4 位作者 丁鹏飞 马欢 郭朋杰 雷和畅 王善才 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第4期146-151,共6页
Using angle-resolved photoemission spectroscopy and density functional theory calculations methods,we investigate the electronic structures and topological properties of ternary tellurides NbIrTe_(4),a candidate for t... Using angle-resolved photoemission spectroscopy and density functional theory calculations methods,we investigate the electronic structures and topological properties of ternary tellurides NbIrTe_(4),a candidate for type-II Weyl semimetal.We demonstrate the presence of several Fermi arcs connecting their corresponding Weyl points on both termination surfaces of the topological material.Our analysis reveals the existence of Dirac points,in addition to Weyl points,giving both theoretical and experimental evidences of the coexistence of Dirac and Weyl points in a single material.These findings not only confirm NbIrTe_(4) as a unique topological semimetal but also open avenues for exploring novel electronic devices based on its coexisting Dirac and Weyl fermions. 展开更多
关键词 Fermi arc Weyl point Dirac point angle-resolved photoemission spectroscopy
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Relationship between disorder,magnetism and band topology in Mn(Sb_(1-x)Bi_(x))_(2)Te_(4) single crystals
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作者 席明 雷和畅 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第6期102-107,共6页
We investigate the evolution of magnetic properties as well as the content and distribution of Mn for Mn(Sb_(1-x)Bi_(x))_(2)Te_(4) single crystals grown by large-temperature-gradient chemical vapor transport method.It... We investigate the evolution of magnetic properties as well as the content and distribution of Mn for Mn(Sb_(1-x)Bi_(x))_(2)Te_(4) single crystals grown by large-temperature-gradient chemical vapor transport method.It is found that the ferromagnetic MnSb_(2)Te_(4) changes to antiferromagnetism with Bi doping when x≥0.25.Further analysis implies that the occupations of Mn ions at Sb/Bi site Mn_(Sb/Bi) and Mn site Mn_(Mn) have a strong influence on the magnetic ground states of these systems.With the decrease of Mn_(Mn) increase of Mn_(Sb/Bi),the system will favor the ferromagnetic ground state.In addition,the rapid decrease of T_(C/N) with increasing Bi content when x ≤0.25 and the insensitivity of T_(N) to x when x> 0.25 suggest that the main magnetic interaction may change from the Ruderman-Kittel-Kasuya-Yosida type at low Bi doping region to the van-Vleck type in high Bi doped samples. 展开更多
关键词 magnetic topological insulator magnetic properties antisite defects chemical vapor transport
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Optimal parameter space for stabilizing the ferroelectric phase of Hf_(0.5)Zr_(0.5)O_(2) thin films under strain and electric fields
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作者 王侣锦 王聪 +4 位作者 周霖蔚 周谐宇 潘宇浩 吴幸 季威 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第7期509-517,共9页
Hafnia-based ferroelectric materials, like Hf_(0.5)Zr_(0.5)O_(2)(HZO), have received tremendous attention owing to their potentials for building ultra-thin ferroelectric devices. The orthorhombic(O)-phase of HZO is fe... Hafnia-based ferroelectric materials, like Hf_(0.5)Zr_(0.5)O_(2)(HZO), have received tremendous attention owing to their potentials for building ultra-thin ferroelectric devices. The orthorhombic(O)-phase of HZO is ferroelectric but metastable in its bulk form under ambient conditions, which poses a considerable challenge to maintaining the operation performance of HZO-based ferroelectric devices. Here, we theoretically addressed this issue that provides parameter spaces for stabilizing the O-phase of HZO thin-films under various conditions. Three mechanisms were found to be capable of lowering the relative energy of the O-phase, namely, more significant surface-bulk portion of(111) surfaces, compressive c-axis strain,and positive electric fields. Considering these mechanisms, we plotted two ternary phase diagrams for HZO thin-films where the strain was applied along the in-plane uniaxial and biaxial, respectively. These diagrams indicate the O-phase could be stabilized by solely shrinking the film-thickness below 12.26 nm, ascribed to its lower surface energies. All these results shed considerable light on designing more robust and higher-performance ferroelectric devices. 展开更多
关键词 Hf_(0.5)Zr_(0.5)O_(2) orthorhombic phase ferroelectric films phase stability thickness-dependent ternary phase diagrams
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Semiclassical approach to spin dynamics of a ferromagnetic S = 1 chain
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作者 李承晨 崔祎 +1 位作者 于伟强 俞榕 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第6期95-100,共6页
Motivated by recent experimental progress on the quasi-one-dimensional quantum magnet Ni Nb2O6, we study the spin dynamics of an S = 1 ferromagnetic Heisenberg chain with single-ion anisotropy by using a semiclassical... Motivated by recent experimental progress on the quasi-one-dimensional quantum magnet Ni Nb2O6, we study the spin dynamics of an S = 1 ferromagnetic Heisenberg chain with single-ion anisotropy by using a semiclassical molecular dynamics approach. This system undergoes a quantum phase transition from a ferromagnetic to a paramagnetic state under a transverse magnetic field, and the magnetic response reflecting this transition is well described by our semiclassical method.We show that at low temperature the transverse component of the dynamical structure factor depicts clearly the magnon dispersion, and the longitudinal component exhibits two continua associated with single-and two-magnon excitations,respectively. These spin excitation spectra show interesting temperature dependence as effects of magnon interactions. Our findings shed light on the experimental detection of spin excitations in a large class of quasi-one-dimensional magnets. 展开更多
关键词 one-dimensional ferromagnetism spin dynamics magnon excitation molecular dynamics
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Drivers for Inter-city Innovation Networks Across Chinese Cities:Modelling Physical Versus Intangible Effects
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作者 GAO Yujie SCHERNGELL Thomas NEULÄNDTNER Martina 《Chinese Geographical Science》 SCIE CSCD 2024年第4期706-721,共16页
Cross-region innovation is widely recognized as an important source of the long-term regional innovation capacity.In the recent past,a growing number of studies has investigated the network structure and mechanisms of... Cross-region innovation is widely recognized as an important source of the long-term regional innovation capacity.In the recent past,a growing number of studies has investigated the network structure and mechanisms of cross-region innovation collaboration in various contexts.However,existing research mainly focuses on physical effects,such as geographical distance and high-speed railway connections.These studies ignore the intangible drivers in a changing environment,the more digitalized economy and the increasingly solidified innovation network structure.Thus,the focus of this study is on estimating determinants of innovation networks,especially on intangible drivers,which have been largely neglected so far.Using city-level data of Chinese patents(excluding Hong Kong,Macao,and Taiwan Province of China),we trace innovation networks across Chinese cities over a long period of time.By integrating a measure on Information and Communications Technology(ICT)development gap and network structural effects into the general proximity framework,this paper explores the changing mechanisms of Chinese innovation networks from a new perspective.The results show that the structure of cross-region innovation networks has changed in China.As mechanisms behind this development,the results confirm the increasingly important role of intangible drivers in Chinese inter-city innovation collaboration when controlling for effects of physical proximity,such as geographical distance.Since digitalization and coordinated development are the mainstream trends in China and other developing countries,these countries'inter-city innovation collaboration patterns will witness dramatic changes under the influence of intangible drivers. 展开更多
关键词 inter-city innovation network co-patents information and communications technology development network structural effect spatial interaction model China
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Universal basis underlying temperature, pressure and size induced dynamical evolution in metallic glass-forming liquids
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作者 张华平 范蓓蓓 +1 位作者 吴佳琦 李茂枝 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第1期134-142,共9页
The dramatic temperature-dependence of liquids dynamics has attracted considerable scientific interests and efforts in the past decades, but the physics of which remains elusive. In addition to temperature, some other... The dramatic temperature-dependence of liquids dynamics has attracted considerable scientific interests and efforts in the past decades, but the physics of which remains elusive. In addition to temperature, some other parameters, such as pressure, loading and size, can also tune the liquid dynamics and induce glass transition, which makes the situation more complicated. Here, we performed molecular dynamics simulations for Ni_(50)Zr_(50) bulk liquid and nanodroplet to study the dynamics evolution in the complex multivariate phase space, especially along the isotherm with the change of pressure or droplet size. It is found that the short-time Debye–Waller factor universally determines the long-time relaxation dynamics no matter how the temperature, pressure or size changes. The basic correlation even holds at the local atomic scale. This finding provides general understanding of the microscopic mechanism of dynamic arrest and dynamic heterogeneity. 展开更多
关键词 metallic glass-forming liquids structure relaxation dynamical heterogeneity Debye–Waller factor
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Structure and superconducting properties of Ru_(1-x)Mo_(x)(x=0.1-0.9)alloys
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作者 付阳 龚春生 +3 位作者 涂志俊 田尚杰 王守国 雷和畅 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第4期173-179,共7页
We report the detailed crystal structures and physical properties of Ru_(1-x)Mo_(x)alloys in the solid solution range of x=0.1-0.9.Structure characterizations indicate that the crystal structure changes from the hcp-M... We report the detailed crystal structures and physical properties of Ru_(1-x)Mo_(x)alloys in the solid solution range of x=0.1-0.9.Structure characterizations indicate that the crystal structure changes from the hcp-Mg-type,toβ-CrFe-type,and then bcc-W-type.The measurements of physical properties show that the Ru_(1-x)Mo_(x)samples with x≥0.2are superconductors and the superconducting transition temperature T_c as a function of Mo content exhibits a dome-like behavior. 展开更多
关键词 SUPERCONDUCTIVITY alloy crystal structures Ru_(1-x)Mo_(x)
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Controlled fabrication of freestanding monolayer SiC by electron irradiation
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作者 笪蕴力 罗瑞春 +2 位作者 雷宝 季威 周武 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第8期31-37,共7页
The design and preparation of novel quantum materials with atomic precision are crucial for exploring new physics and for device applications.Electron irradiation has been demonstrated as an effective method for prepa... The design and preparation of novel quantum materials with atomic precision are crucial for exploring new physics and for device applications.Electron irradiation has been demonstrated as an effective method for preparing novel quantum materials and quantum structures that could be challenging to obtain otherwise.It features the advantages of precise control over the patterning of such new materials and their integration with other materials with different functionalities.Here,we present a new strategy for fabricating freestanding monolayer SiC within nanopores of a graphene membrane.By regulating the energy of the incident electron beam and the in-situ heating temperature in a scanning transmission electron microscope(STEM),we can effectively control the patterning of nanopores and subsequent growth of monolayer SiC within the graphene lattice.The resultant SiC monolayers seamlessly connect with the graphene lattice,forming a planar structure distinct by a wide direct bandgap.Our in-situ STEM observations further uncover that the growth of monolayer SiC within the graphene nanopore is driven by a combination of bond rotation and atom extrusion,providing new insights into the atom-by-atom self-assembly of freestanding two-dimensional(2D)monolayers. 展开更多
关键词 monolayer SiC 2D semiconductor in-situ growth in-situ STEM defect engineering graphene nanopores
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Data-Driven Learning Control Algorithms for Unachievable Tracking Problems
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作者 Zeyi Zhang Hao Jiang +1 位作者 Dong Shen Samer S.Saab 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2024年第1期205-218,共14页
For unachievable tracking problems, where the system output cannot precisely track a given reference, achieving the best possible approximation for the reference trajectory becomes the objective. This study aims to in... For unachievable tracking problems, where the system output cannot precisely track a given reference, achieving the best possible approximation for the reference trajectory becomes the objective. This study aims to investigate solutions using the Ptype learning control scheme. Initially, we demonstrate the necessity of gradient information for achieving the best approximation.Subsequently, we propose an input-output-driven learning gain design to handle the imprecise gradients of a class of uncertain systems. However, it is discovered that the desired performance may not be attainable when faced with incomplete information.To address this issue, an extended iterative learning control scheme is introduced. In this scheme, the tracking errors are modified through output data sampling, which incorporates lowmemory footprints and offers flexibility in learning gain design.The input sequence is shown to converge towards the desired input, resulting in an output that is closest to the given reference in the least square sense. Numerical simulations are provided to validate the theoretical findings. 展开更多
关键词 Data-driven algorithms incomplete information iterative learning control gradient information unachievable problems
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