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Energy Engineering 2024年第5期121卷 1223-1243页

作者： Wenlu Ji teng tu Nan Ma Nanjing Power Supply Company State Grid Jiangsu Electric Power Co.Ltd.Nanjing210019China

To improve the resilience of a distribution system against extreme weather,a fuel-based distributed generator(DG)allocation model is proposed in this study.In this model,the DGs are placed at the planning stage.When an extreme event occurs,the controllable generators form temporary microgrids(MGs)to restore the load maximally.Simultaneously,a demand response program(DRP)mitigates the imbalance between the power supply and demand during extreme events.To cope with the fault uncertainty,a robust optimization(RO)method is applied to reduce the long-term investment and short-term operation costs.The optimization is formulated as a tri-level defenderattacker-defender(DAD)framework.At the first level,decision-makers work out the DG allocation scheme;at the second level,the attacker finds the optimal attack strategy with maximum damage;and at the third level,restoration measures,namely distribution network reconfiguration(DNR)and demand response are performed.The problem is solved by the nested column and constraint generation(NC&CG)method and the model is validated using an IEEE 33-node system.Case studies validate the effectiveness and superiority of the proposed model according to the enhanced resilience and reduced cost.

关键词： Distribution system resilience defender-attacker-defender distributed generator demand response microgrids formation

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人文关怀语境下陶瓷坐便器的设计演变综述

中国陶瓷 2024年第1期60卷 84-89页

作者：涂腾景德镇陶瓷大学景德镇333403

陶瓷坐便器属于卫生陶瓷产品,是现代卫生设施中不可或缺的一部分。自我国开始生产陶瓷坐便器产品以来,其外观、功能与材料便不断迭代创新,以满足人们日益变化着的物质与精神需求。基于人文关怀语境,以陶瓷坐便器产品为研究对象,深入研... 详细信息

陶瓷坐便器属于卫生陶瓷产品,是现代卫生设施中不可或缺的一部分。自我国开始生产陶瓷坐便器产品以来,其外观、功能与材料便不断迭代创新,以满足人们日益变化着的物质与精神需求。基于人文关怀语境,以陶瓷坐便器产品为研究对象,深入研究其设计流变,探寻其设计原理与发展方向,以期助推陶瓷坐便器产品的良性、可持续发展。

关键词：人文关怀陶瓷坐便器设计演变

Collusion Potential Assessment in Electricity Markets Considering Generation Flexibility

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CSEE Journal of Power and Energy Systems 2023年第4期9卷 1551-1566页

作者： teng tu Yi Ding Peng Ji Minglei Bao Nan Shang Yonghua Song Dan Zeng College of Electrical Engineering Zhejiang UniversityHangzhou 310027China Beijing Power Exchange Center Co.Ltd. Beijing 100000China the Institute of Energy Strategy and Policy China Southern Power GridGuangzhou 510663China State Key Laboratory of Internet of Things for Smart City University of MacaoTaipaMacao SARChina China Electric Power Research Institute Nanjing 210037China.

The collusion among various generating units has been a problematic issue affecting the fairness and transparency of electricity markets.Therefore,it is of great significance to assess the potential of such collusion in the electricity market.However,the previous assessment studies primarily focused on the bidding behaviors of collusive generating units,without considering the influences of generation flexibility,such as ramp rates.In this paper,a novel assessment method is proposed to evaluate the collusion potential in the electricity market considering generation flexibility.First,a bi-level optimization model is developed to simulate the collusive strategies of dif-ferent generating units,including the withholding of generation capacities and ramp rates,as well as the uplifting of minimum outputs and bidding prices.In the upper-level problem,collusive generating units optimize their offering strategies to optimize the generation profits without violating the regulatory laws.The lower-level problem is a day-ahead economic dispatch model which minimizes the dispatching costs.Based on the optimal collusive strategies determined by the bi-level model,a framework is then proposed to assess the collusion potential in electricity markets.Moreover,price-based and profit-based indices are proposed to quantitatively evaluate the collusion potential of different generating units.Finally,the proposed assessment method is validated on a modified IEEE 39-node system.The numerical results demonstrated that generation flexibility can be exploited collusively for making excessive profits,particularly during load peaks and valleys.Index Terms-Collusionpotential,economic cdispatch,generation flexibility,ramp rates,strategic withholding.

关键词： Collusionpotentiale conomiccdispatch generation flexibility ramp rates strategic withholding.

Two‑Level Biomimetic Designs Enable Intelligent Stress Dispersion for Super‑Foldable C/NiS Nanofiber Free‑Standing Electrode

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Advanced Fiber Materials 2022年第5期4卷 1177-1190页

作者： Guangtao Zan Tong Wu Wenya Dong Junchen Zhou teng tu Ruoxuan Xu Yun Chen Ying Wang Qingsheng Wu School of Chemical Science and Engineering Institute of Advanced StudyShanghai Key Laboratory of Chemical Assessment and SustainabilitySchool of Aerospace Engineering and Applied MechanicsTongji UniversityShanghai 200092People’s Republic of China School of Chemical and Environmental Engineering Shanghai Institute of TechnologyShanghai 201418People’s Republic of China

Due to the lack of in-depth understanding about the folding issues of the electronic materials,it is a huge challenge to pre-pare a super-foldable and highly electrochemical faradic electrode.Here,inspired from from the fully nimble structures of cuit cocoons and cockscomb petals,with two-level biomimetic design,for the first time we prepared a super-foldable and electrochemically functional freestanding cathode,made of C-fiber@NiS-cockscomb(SFCNi).In virtue of its nimble biomi-metic structures,SFCNi can remarkably sustain over 100,000 times,repeated true-folding without composite fibers fracture,functional matters detachment,conductivity degradation,or electrochemical performance change.The main mechanism behind these behaviors was disclosed by Real-time scanning electron microscopy and mechanical simulations,on the folding process.Results unveil that the cockscomb-like NiS with atomic thickness can deform freely due to the need of bending,and the cuit-cocoon-like SFCNi can generate an“ε-shape”folding structure at the crease.Such a smart self-adaptive deforma-tion capability can effectively reduce the effect of stresses and local excessive deformations,so that the chemical bonds can preserve their interaction,and the material won’t fracture.This subtle and exceptional mechanical behavior realizes a super-foldable property.The two-level biomimetic design strategy is a novel method for fabrication of super-foldable composite electrodes and integrated multi-functional super-foldable devices.

关键词： Super-foldable Biomimetic Nanofiber network Stress dispersion Electrode

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论人工智能生成内容的可版权性标准

知识产权 2024年第1期 68-84页

作者：李扬涂藤中山大学法学院

生成式人工智能将著作权法在独创性表达之上创设的稀缺性和激励转移至表达背后的智力投入,即提示词的迭代中,人工智能生成内容由此具备可版权性基础。现有反对意见过度关注作者身份问题,造成诸多论证困境。“意志论”未能区分作者的范... 详细信息

生成式人工智能将著作权法在独创性表达之上创设的稀缺性和激励转移至表达背后的智力投入,即提示词的迭代中,人工智能生成内容由此具备可版权性基础。现有反对意见过度关注作者身份问题,造成诸多论证困境。“意志论”未能区分作者的范畴意图和语义意图,忽视了所有作品的表达内容均不可能在绝对意义上为作者的自由意志所决定、预见和控制,且诉诸“创作辅助人”条款将赋予人工智能法律主体资格,无法成立。而“过程论”将作品可版权性与具体创作方法联系在一起,不符合著作权法的规则和目的。人工智能生成内容的可版权性标准应该从作者身份转向独创性。由于排他权范围极其有限,对人工智能生成内容适用最低限度独创性理论不会造成权利“井喷”现象。

关键词：人工智能稀缺性作者身份自由意志独创性

A High-Ductility Mg–Zn–Ca Magnesium Alloy

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Acta Metallurgica Sinica(English Letters) 2019年第1期32卷 23-30页

作者： teng tu Xian-Hua Chen Jiao Chen Chao-Yue Zhao Fu-Sheng Pan College of Materials Science and Engineering Chongqing University National Engineering Research Center for Magnesium Alloys Chongqing University Chongqing Academy of Science and Technology

A new kind of Mg–2 Zn–0.6 Ca(wt%) alloy was fabricated by casting and hot extrusion as a high-ductility structural material. The extruded alloy exhibits a superior elongation of ～30%, yield strength of 130 MPa and ultimate tensile strength of 280 MPa along the extrusion direction at room temperature. Microstructure, texture and tensile properties of the extruded alloy were investigated in details. The remarkable improvement of ductility is ascribed to the weakened basal texture, refined grains and a small number of second phase in the alloy.

关键词： Magnesium alloy Mg–Zn–Ca High ductility Extrusion Texture

Microstructures and Mechanical Properties of Mg–xAl–1Sn–0.3Mn(x=1,3,5)Alloy Sheets

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Acta Metallurgica Sinica(English Letters) 2020年第9期33卷 1217-1225页

作者： Chao-Yue Zhao Xian-Hua Chen Peng Peng teng tu Andrej Atrens Fu-Sheng Pan College of Materials Science and Engineering Chongqing UniversityChongqing 400045China Shenyang National Laboratory for Materials Science Chongqing UniversityChongqing 400045China School of Mechanical and Mining Engineering The University of QueenslandSt LuciaQLD 4072Australia

The influence of Al alloying on the microstructures and the mechanical properties of Mg–x Al–1 Sn–0.3 Mn alloy sheets was investigated. The microstructure of Mg– x Al–1 Sn–0.3 Mn consisted of α-Mg and Mg 17 Al 12 precipitates. Alloying with Al increased the amount of Mg17Al12 and the average grain size. Uniaxial tensile tests were carried out along the extrusion direction(ED), the transverse direction(TD) and 45° toward the ED. Mg–5 Al–1 Sn–0.3 Mn alloy sheet exhibited the best combination of mechanical properties along the ED: a yield strength of 142 MPa, an ultimate tensile strength of 282 MPa and an elongation of 23%. The good performance of Mg–5 Al–1 Sn–0.3 Mn sheet was mainly attributed to the large quantity of Mg17Al12 precipitates and a weak basal texture. Annealing caused static dynamic recrystallization, refined the grain size and enhanced the mechanical properties: yield strength of 186 MPa, ultimate tensile strength of 304 MPa, elongation of 21% along ED. Both strength and ductility were enhanced by Al alloying.

关键词： Mg–xAl–1Sn–0.3Mn alloys Extrusion Microstructure Mechanical properties

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基于矩阵磁结构的平面电感寄生电容优化设计

中国电机工程学报 2024年第7期44卷 2825-2832,I0025页

作者：屠腾张方华张钊荣黄恩泽余文浩多电飞机电气系统工信部重点实验室(南京航空航天大学) 江苏省南京市210016

当平面电感的单层绕组匝数超过一匝时,外侧绕组间存储的电场能量会导致寄生电容偏大。为降低平面电感寄生电容,文中将一个电感拆分为多个分立电感以实现单层一匝的绕制方案,并分析分立电感方案与单磁心方案在铁损、铜损和体积方面的变... 详细信息

当平面电感的单层绕组匝数超过一匝时,外侧绕组间存储的电场能量会导致寄生电容偏大。为降低平面电感寄生电容,文中将一个电感拆分为多个分立电感以实现单层一匝的绕制方案,并分析分立电感方案与单磁心方案在铁损、铜损和体积方面的变化。针对分立电感体积增大这一问题,进一步提出矩阵磁方案,给出两电感、四电感磁集成结构。有限元仿真结果表明,相接近的体积下,矩阵磁方案降低了77%的寄生电容,并减小了69%的铜损。最后,搭建一台Buck变换器。功率实验结果表明,矩阵磁结构平面电感具有更优的性能。

关键词：平面电感寄生电容矩阵磁磁集成

The effect of capping with natural and modified zeolites on the release of phosphorus and organic contaminants from river sediment

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Frontiers of Chemical Science and Engineering 2011年第3期5卷 308-313页

作者： Shujuan SUN Lei WANG Suiliang HUANG teng tu Hongwen SUN College of Resources and Environment Shandong Agricultural UniversityTaian 271018China Key Laboratory of Pollution Processes and Environmental Criteria(Ministry of Education) Nankai UniversityTianjin 300071China

A microcosm system that included river sediment,water and different zeolite capping materials(natural zeolite,surfactant-modified zeolite(SMZ),or aluminum modified zeolite(AMZ))was designed to study the effect of capping on the release of phosphorus and three organic pollutants(phenol,pyridine,and pyrene)from the sediment to the overlying water over the course of three month.For the same amount of the three capping materials,the efficiency of phosphorus inactivation was in the order of SMZ>AMZ>natural zeolite.The inactivation of phosphorus was mainly caused by the covering effect,co-precipitation and adsorption by the capping materials.The different zeolites gave different results for the release of phenol,pyridine,and pyrene from the sediment.When natural zeolite was used as the capping material,there was no effect on the release of pyrene and pyridine,whereas capping the sediment with SMZ or AMZ inhibited the release of pyrene and pyridine but to different extents.However,for controlling the release of phenol from the sediment,aluminum modified zeolite was the most efficient material,whereas no effects were observed when natural zeolite or SMZ were used.The different capabilities of the zeolite materials for controlling the release of different organic pollutants are related to the differences in the electrical properties of these pollutants.

关键词： sediment capping natural zeolite modified zeolite phosphorus

Strain hardening of as-extruded Mg-xZn(x=1, 2, 3 and 4 wt%) alloys

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Journal of Materials Science & Technology 2019年第1期35卷 142-150页

作者： Chaoyue Zhao Xianhua Chen Fusheng Pan Jingfeng Wang Shangyu Gao teng tu Chunquan Liu Jiahao Yao Andrej Atrens International Joint Laboratory for Light Alloys (Ministry of Education) College of Materials Science and EngineeringChongqing UniversityChongqing 400045China National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing400045China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang110016China School of Mechanical and Mining Engineering The University of QueenslandSt Lucia4072QldAustralia

The influence of Zn on the strain hardening of as-extruded Mg-x Zn(x = 1, 2, 3 and 4 wt%) magnesium alloys was investigated using uniaxial tensile tests at 10^(-3)s^(-1) at room temperature. The strain hardening rate,the strain hardening exponent and the hardening capacity were obtained from true plastic stress-strain curves. There were almost no second phases in the as-extruded Mg-Zn magnesium alloys. Average grain sizes of the four as-extruded alloys were about 17.8 μm. With increasing Zn content from 1 to 4 wt%, the strain hardening rate increased from 2850 MPa to 6810 MPa at(б-б_(0.2)) = 60 MPa, the strain hardening exponent n increased from 0.160 to 0.203, and the hardening capacity, Hc increased from 1.17 to 2.34.The difference in strain hardening response of these Mg-Zn alloys might be mainly caused by weaker basal texture and more solute atoms in the α-Mg matrix with higher Zn content.

关键词： Mg-Zn alloy Strain hardening Dislocation Basal texture