检索结果-南通市图书馆

Modified reward function on abstract features in inverse reinforcement learning

在线全文

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science C(Computers and Electronics) 2010年第9期11卷 718-723页

作者： Shen-yi CHEN Hui QIAN Jia FAN zhuo-jun jin Miao-liang zhu School of Computer Science and Technology Zhejiang University Hangzhou 310027 China

We improve inverse reinforcement learning(IRL) by applying dimension reduction methods to automatically extract Abstract features from human-demonstrated policies,to deal with the cases where features are either unknown or *** importance rating of each abstract feature is incorporated into the reward *** is performed on a task of driving in a five-lane highway,where the controlled car has the largest fixed speed among all the *** is almost 10.6% better on average with than without importance ratings.

关键词： Importance rating Abstract feature Feature extraction Inverse reinforcement learning(IRL) Markov decision process(MDP)

Theoretical and experimental investigations on single-atom catalysis:Pt_(1)/FeO_(x) for water-gas shift reaction

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第9期17卷 8627-8637页

作者： Shan-Fei Wang Yangyang Li Haiyan Wang jin-Xia liang Chun zhu Botao Qiao School of Chemistry and Chemical Engineering Guizhou UniversityGuiyang 550025China CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China University of Chinese Academy of Sciences Beijing 100049China

Oxide-supported metal single-atom catalysts(SACs)have exhibited excellent catalytic performance for water-gas shift(WGS)***,we report the single-atom catalyst Pt1/FeOx exhibits excellent medium temperature catalytic performance for WGS reactions by the density functional theory(DFT)calculations and experimental *** calculations indicate that H_(2)O molecules are easily dissociated at oxygen vacancies,and the formed*OH and*O are adsorbed on Pt1 single atoms and the adjacent O atoms,*** studying four possible reaction mechanisms,it is found that the optimal WGS reaction pathway is proceeded along the carboxyl mechanism(pathway III),in which the formation of*COOH intermediates can promote the stability of Pt_(1)/FeO_(x) SAC and the easier occurrence of WGS *** energy barrier of the rate-determining step during the entire reaction cycle is only 1.16 eV,showing the high activity for the medium temperature WGS reaction on Pt_(1)/FeO_(x) SAC,which was verified by experimental ***,the calculated turnover frequencies(TOFs)of CO_(2)and H_(2)formation on Pt1/FeOx at 610 K(337℃)can reach up to 1.14×10^(-3)s^(-1)·site^(-1)through carboxyl *** this work,we further expand the application potential of Pt1/FeOx SAC in WGS reaction.

关键词： water-gas shift(WGS)reaction single-atom catalyst(SAC) density functional theory(DFT) thermocatalysis

Rapid and controllable in-situ self-assembly of main-group metal nanofilms for highly efficient CO_(2)electroreduction to liquid fuel in flow cells

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2024年第6期17卷 5718-5725页

作者： Miao Wang Huaizhu Wang Yaoda Wang Junchuan liang Mengfei zhu Jiarui Li Zuoxiu Tie Zhong jin State Key Laboratory of Coordination Chemistry MOE Key Laboratory of Mesoscopic ChemistryMOE Key Laboratory of High Performance Polymer Materials and TechnologyJiangsu Key Laboratory of Advanced Organic MaterialsTianchang New Materials and Energy Technology Researc

The electrocatalytic reduction of CO_(2)is a promising pathway to generate renewable fuels and ***,its advancement is impeded by the absence of electrocatalysts with both high selectivity and ***,we present a scalable in-situ thermal evaporation technique for synthesizing series of Bi,In,and Sn nanofilms on carbon felt(CF)substrates with a high-aspect-ratio *** resulting main-group metal nanofilms exhibit a homogeneously distributed and highly exposed catalyst surface with ample active sites,thereby promoting mass transport and ad-/desorption of reaction *** from the unique fractal morphology,the Bi nanofilms deposited on CF exhibit optimal catalytic activities for CO_(2)electroreduction among the designed metal nanofilms electrodes,with the highest Faradaic efficiency of 96.9%for formate production at−1.3 V *** hydrogen electrode(RHE)in *** an industrially relevant current density of 221.4 mA·cm−2 in flow cells,the Bi nanofilms retain a high Faradaic efficiency of 81.7%at−1.1 V(***)and a good long-term stability for formate ***,a techno-economic analysis(TEA)model shows the potential commercial viability of electrocatalytic CO_(2)conversion into formate using the Bi nanofilms *** results offer a green and convenient approach for in-situ fabrication of stable and inexpensive thin-film catalysts with a fractal structure applicable to various industrial settings.

关键词： CO_(2)electroreduction non-noble metal nanofilms flow cells efficiency and selectivity techno-economic analysis

A novel fracture-cavity reservoir outcrop geological knowledge base construction method considering parameter collection and processing, mutual transformation of data-knowledge, application and update

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Petroleum Science 2024年第4期21卷 2184-2202页

作者： Qi-Qiang Ren jin-liang Gao Peng zhu Meng-Ping Li Jian-Wei Feng Qiang jin San Zhang Institute of Sedimentary Geology Chengdu University of Technology PetroChina Research Institute of Petroleum Exploration and Development School of Energy Chengdu University of Technology School of Resources and Geosciences China University of Mining and Technology School of Geosciences China University of Petroleum (East China) School of Geosciences Yangtze University

This study endeavors to formulate a comprehensive methodology for establishing a Geological Knowledge Base(GKB) tailored to fracture-cavity reservoir outcrops within the North Tarim Basin. The acquisition of quantitative geological parameters was accomplished through diverse means such as outcrop observations, thin section studies, unmanned aerial vehicle scanning, and high-resolution cameras. Subsequently, a three-dimensional digital outcrop model was generated, and the parameters were standardized. An assessment of traditional geological knowledge was conducted to delineate the knowledge framework, content, and system of the GKB. The basic parameter knowledge was extracted using multiscale fine characterization techniques, including core statistics, field observations, and microscopic thin section analysis. Key mechanism knowledge was identified by integrating trace elements from filling, isotope geochemical tests, and water-rock simulation experiments. Significant representational knowledge was then extracted by employing various methods such as multiple linear regression, neural network technology, and discriminant classification. Subsequently, an analogy study was performed on the karst fracture-cavity system(KFCS) in both outcrop and underground reservoir settings. The results underscored several key findings:(1) Utilization of a diverse range of techniques,including outcrop observations, core statistics, unmanned aerial vehicle scanning, high-resolution cameras, thin section analysis, and electron scanning imaging, enabled the acquisition and standardization of data. This facilitated effective management and integration of geological parameter data from multiple sources and scales.(2) The GKB for fracture-cavity reservoir outcrops, encompassing basic parameter knowledge, key mechanism knowledge, and significant representational knowledge, provides robust data support and systematic geological insights for the intricate and in-depth examination of the genetic

关键词： Geological knowledge base Karst fracture-cavity system Mutual transformation of data-knowledge Knowledge base content and application Tarim basin

The Functions of Componential Analysis to the Translation of Cultural Animal Images in The Classic of Mountains and Seas

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Sino-US English Teaching 2016年第9期13卷 724-735页

作者： YU Chen-chen liang jin-zhu Chengdu Textile College Chengdu China

The thesis aims to explain the functions of componential analysis to animal images in The Classic of Mountains and Seas. It serves as a treasure to the tremendous Chinese classics. However, as most of the animal images in the classic book are rarely seen in daily life, translation of animal images in the ancient Chinese book remains a hard nut to crack. In this case, explicit and accurate interpretation of these culture-loaded items is crucial to make readers understand. However, few previous studies touched upon this area. In this case, componential analysis serves as a solution. As an effective approach for analyzing semantic components, componential analysis is an effective way to break down semantic components of words and make them easily understood. In the previous studies, papers relating translation to componential analysis were not the majority. Among them, few papers are concerning application of componential analysis to the translation of literary works. In this essay, the analysis of animal images could be interpreted in lexical and textual level respectively. In this case, componential analysis bridges the gap for culture differences and enables readers of target language to savor the beauty. Therefore, readers of the target language can enjoy alien cultures of ancient China by reading this translated version.

关键词： componential analysis The Classic of Mountains and Seas animal image

Innovation and Firm Co-ownership Network in China’s Electric Vehicle Industry

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Geographical Science 2024年第2期34卷 195-209页

作者： jin Zerun zhu Shengjun College of Urban and Environmental Sciences Peking UniversityBeijing 100871China Laboratory for Earth Surface Pro-cesses of the Ministry of Education Peking UniversityBeijing 100871China

Firms are embedded in complex networks,where diverse ideas combine and generate new *** of firms are of-ten seen as critical external resources that have significant influence on firm *** current literature tends to focus on the rela-tionship between firms and their shareholders,while paying less attention to the connections between firms with the same *** article identifies two types of network spillover effects,intra-city network effect and inter-city network effect,by visualizing the co-ownership networks in China’s electric vehicle(EV)*** find that firms with the same shareholders,which are defined as co-owned EV firms,are more innovative than non-co-owned ***,there are two dominant types of firm co-ownership ties formed by corporate and financial institution *** corporate shareholders help exploiting local tacit knowledge,financial institutions are more active in bridging inter-city *** conclusion is confirmed at both firm and city *** paper theor-izes the firm co-ownership network as a new form of institutional proximity and tested the result *** policy consideration,we have emphasized the importance of building formal or informal inter-firm network,and the government should further enhance the knowledge flow channel by institutional construction.

关键词： firm co-ownership intra-city network inter-city network technological innovation electric vehicle China

归原疏筋合剂治疗腰椎间盘突出症的临床疗效及对血清NF-κB p65表达水平的影响

在线全文

学校读者我要写书评

暂无评论

广州中医药大学学报 2024年第7期41卷 1772-1778页

作者：林淑惠李翩阮烨梁金柱蔡子鸣田禾林文平深圳平乐骨伤科医院(深圳市坪山区中医院) 广东深圳518118 广州中医药大学第三临床医学院广东广州510006 广州中医药大学广东广州510006

【目的】探究归原疏筋合剂治疗腰椎间盘突出症(LDH)患者的临床疗效及其可能的作用机制。【方法】将68例气滞血瘀证LDH患者随机分为试验组和对照组,每组各34例。对照组给予塞来昔布及甲钴胺片内服治疗,试验组在对照组的基础上加用归原疏... 详细信息

【目的】探究归原疏筋合剂治疗腰椎间盘突出症(LDH)患者的临床疗效及其可能的作用机制。【方法】将68例气滞血瘀证LDH患者随机分为试验组和对照组,每组各34例。对照组给予塞来昔布及甲钴胺片内服治疗,试验组在对照组的基础上加用归原疏筋合剂内服治疗,疗程为4周。观察2组患者治疗前后腰痛和下肢痛视觉模拟量表(VAS)评分、Oswestry功能障碍指数(ODI)评分、改良日本骨科协会(JOA)评分以及血清炎症因子[肿瘤坏死因子α(TNF-α)、白细胞介素6(IL-6)、白细胞介素1β(IL-1β)]和血清核因子κB p65(NF-κB p65)水平的变化情况,并评价2组患者的临床疗效和用药安全性。【结果】(1)脱落情况方面,研究过程中,试验组脱落1例,对照组脱落3例,最终试验组33例、对照组31例纳入疗效统计。(2)疗效方面,治疗4周后,试验组的总有效率为96.97%(32/33),对照组为87.10%(27/31);组间比较(秩和检验),试验组的疗效明显优于对照组(P0.05)。【结论】归原疏筋合剂治疗气滞血瘀证LDH患者疗效确切,可有效缓解患者疼痛症状,改善患者腰椎功能,降低血清炎症因子及NF-κB p65表达水平,其作用机制可能与降低炎症因子水平,抑制NF-κB信号通路的活化有关。

关键词：归原疏筋合剂腰椎间盘突出症气滞血瘀证炎症因子 NF-κB p65 NF-κB信号通路

Antimony doped CsPbI_(2)Br for high-stability all-inorganic perovskite solar cells

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第3期17卷 1508-1515页

作者： Mengfei zhu Lina Qin Yuren Xia Junchuan liang Yaoda Wang Daocheng Hong Yuxi Tian Zuoxiu Tie Zhong jin State Key Laboratory of Coordination Chemistry Ministry of Education(MOE)Key Laboratory of Mesoscopic ChemistryMOE Key Laboratory of High Performance Polymer Materials and TechnologyJiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Nanjing Tieming Energy Technology Co. Ltd.Nanjing 210093China Suzhou Tierui New Energy Technology Co. Ltd.Suzhou 215228China

All-inorganic perovskites,adopting cesium(Cs+)cation to completely replace the organic component of A-sites of hybrid organic–inorganic halide perovskites,have attracted much attention owing to the excellent thermal ***,all-inorganic iodine-based perovskites generally exhibit poor phase stability in ambient ***,we propose an efficient strategy to introduce antimony(Sb^(3+))into the crystalline lattices of CsPbI_(2)Br perovskite,which can effectively regulate the growth of perovskite crystals to obtain a more stable perovskite *** to the much smaller ionic radius and lower electronegativity of trivalent Sb^(3+)than those of Pb^(2+),the Sb^(3+)doping can decrease surface defects and suppress charge recombination,resulting in longer carrier lifetime and negligible *** a result,the all-inorganic perovskite solar cells(PSCs)based on 0.25%Sb^(3+)doped CsPbI_(2)Br light absorber and screen-printable nanocarbon counter electrode achieved a power conversion efficiency of 11.06%,which is 16%higher than that of the control devices without Sb^(3+)***,the Sb^(3+)doped all-inorganic PSCs also exhibited greatly improved endurance against heat and *** to the use of low-cost and easy-to-process nanocarbon counter electrodes,the manufacturing process of the all-inorganic PSCs is very convenient and highly repeatable,and the manufacturing cost can be greatly *** work offers a promising approach to constructing high-stability all-inorganic PSCs by introducing appropriate lattice doping.

关键词： all-inorganic perovskite solar cells Sb doped cesium lead halide perovskites foreign B-site ions hole-conductor-free phase stability improvement

An Improved Bounded Conflict-Based Search for Multi-AGV Pathfinding in Automated Container Terminals

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2024年第6期139卷 2705-2727页

作者： Xinci Zhou jin zhu Shanghai Maritime University Logistics Science and Engineering Research InstituteShanghai200000China

As the number of automated guided vehicles(AGVs)within automated container terminals(ACT)continues to rise,conflicts have becomemore *** point and edge conflicts ofAGVs,amulti-AGVconflict-free path planning model has been formulated to minimize the total path length of AGVs between shore bridges and *** larger terminalmaps and complex environments,the grid method is employed to model AGVs’road *** improved bounded conflict-based search(IBCBS)algorithmtailored to ACT is proposed,leveraging the binary tree principle to resolve conflicts and employing focal search to expand the search *** experiments involving 60 AGVs indicate a reduction in computing time by 37.397%to 64.06%while maintaining the over cost within 1.019%.Numerical experiments validate the proposed algorithm’s efficacy in enhancing efficiency and ensuring solution quality.

关键词： Automated terminals multi-AGV multi-agent path finding(MAPF) conflict based search(CBS) AGV path planning