检索结果-内蒙古大学图书馆

8th International Conference on Information technology, Information Systems and Electrical Engineering, ICITISEE 2024

作者： Adhitama, Bayu Satya Nasution, Ali Syahputra Safitri, Yuvita Dian Rasyidy, Fadillah Halim Dwi, Adi Aufarachman Putra Bambang Jatmiko, Nugroho Widi Suhermanto Gunawan, Hidayat Munawar, Sutan Takdir Ali Darlis, Denny Jakarta Indonesia Research Center for Satellite Technology Jakarta Indonesia Data and Information Center Jakarta Indonesia Telkom University Faculty of Applied Science Bandung Indonesia

ISBN: (纸本)9798350368970

Ingest card decoding using Reed Solomon (RS) codes in the Consultative Committee for Space Data Systems (CCSDS) standard plays a critical role in ensuring the success of satellite missions by providing accurate and reliable data transmission. The RS code decoder can be applied to a System on Chip (SoC) Field Programmable Gate Array (FPGA) with a Hard Processor System (HPS), thereby providing high-speed and efficient error correction for data transmission systems. This paper aims to design an RS code decoder based on CCSDS RS (255, 223) interleave 4, which is implemented on the SoC DE-10 Nano development board device. This system was developed using the C++ programming language on the Linux platform. The implementation results show that ingest system that can extract raw data from low-resolution satellite imagery is feasible. Through the use of interleave 4, PN derandomization, and ASM removal, the tested SoC system successfully decodes raw data from the CADU CCSDS of MetOp-B/C satellites. This allows for error correction on the received raw data and the creation of an Multiplex Protocol Data Unit (M-PDU) file. © 2024 IEEE.

关键词： System-on-chip

来源：评论

学校读者我要写书评

暂无评论

Effect of milling cutter wear on Ti6Al4V cutting process 5

Effect of milling cutter wear on Ti6Al4V cutting process

引用

5th International Conference on Mechanical Engineering and Materials, ICMEM 2024

作者： Liu, Tong Liu, Qimeng Liu, Jie Wang, Runyu Jiang, Junxiang Cui, Bo Jilin Agricultural Science and Technology University Jilin Jilin13200 China Advanced Manufacturing Technology Engineering Research Center for Key Components of Agricultural Machinery Equipment Jilin Agricultural Science and Technology University Jilin132101 China

ISBN: (数字)9781510688971

ISBN: (纸本)9781510688964

When processing Ti6Al4V parts, the machining accuracy is directly affected by the change of cutting force and residual stress from tool wear. Moreover, the fatigue strength, wear resistance, fit stability, and fatigue strength of parts are directly impacted by the change in surface roughness. This research reveals that the Ti6Al4V machining process has the characteristics of severe tool wear and short service life. The effects of milling cutter wear on Ti6Al4V cutting force, surface residual stress, and surface roughness were dissected through milling experiments, which provided the basis for process optimization of Ti6Al4V parts. The specific research findings are as follows: Under constant cutting parameters, the longer the cutting distance of the tool, the greater the cutting force, residual stress, and surface roughness generated, especially when the cutting distance of the tool is in the stage of severe wear, the impact on cutting force, residual stress, and surface roughness is most significant. © 2025 SPIE.

关键词： Milling cutters

来源：评论

学校读者我要写书评

暂无评论

Flexible asymmetric supercapacitors with reduced graphene oxide and lithium manganese oxide electrodes processed by atmospheric-pressure plasma jet

引用

Ceramics International 2025年第16期51卷 22849-22859页

作者： Chen, Ci-Song Ni, I-Chih Wu, Chih-I Hsu, Cheng-Che Cheng, I-Chun Chen, Jian-Zhang Institute of Applied Mechanics National Taiwan University Taipei City106319 Taiwan Department of Electrical Engineering and Graduate Institute of Photonics and Optoelectronics National Taiwan University Taipei City106319 Taiwan of Advanced Technology National Taiwan University Taipei City106319 Taiwan Department of Chemical Engineering National Taiwan University Taipei City106319 Taiwan Advanced Research Center for Green Materials Science and Technology National Taiwan University Taipei City106319 Taiwan

A nitrogen atmospheric-pressure plasma jet (APPJ) is used for fabricating high-performance flexible asymmetric supercapacitors (ASCs). Screen-printed reduced graphene oxide (rGO) and LiCl-Mn(NO3)2·4H2O pastes were processed by APPJ to form the positive electrode material, and APPJ-processed rGO pastes were used as the negative electrode material. The electrodes sandwiched a PVA-Li2SO4 gel electrolyte to form the flexible ASC. The fabricated ASC exhibited stable operation at 1.6 V, with a maximum areal capacitance of 40.47 mF/cm2 and an energy density of 9.40 μWh/cm2. The capacitance retention rate reached 89 % when tested at a bending curvature of 1 cm−1 and 96 % after 4000 cycles of GCD testing. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Reduced Graphene Oxide

来源：评论

学校读者我要写书评

暂无评论

Influence of different rolling processes on microstructure and strength of the Al–Cu–Li alloy AA2195

引用

Progress in Natural science:Materials International 2022年第1期32卷 87-95页

作者： Fan Ye Ling Mao Jian Rong Baoshuai Zhang Lijun Wei Sihan Wen Haojun Jiao Sujun Wu International Research Center for Advanced Structural and Biomaterials School of Materials Science and Engineering Beihang University School of Materials Science and Engineering Beihang University Aerospace Research Institute of Materials & Processing Technology

The influence of different rolling processes on precipitation behaviour, crystallography texture, grain morphology,and their consequent effects on tensile properties for Al–Cu–Li alloy AA2195 was investigated in the present *** H-T8 samples(hot rolled + T8) presented better tensile strength and ductility(with serious strength anisotropy) than the HC-T8 samples(hot rolled + cold rolled + T8), due to their different microstructures and textures. The higher dislocation density was found in the H-T8 samples, which promoted the nucleation of main strengthening phase T1in the matrix and suppressed the grain boundary precipitation, resulted in better strength and ductility. The increase of the dynamic recovery(DRV) during hot rolling enhanced the generation of Brass texture, and brought serious strength anisotropy. The cold rolling was performed after the hot-rolling process for the HC-T8 samples which increased deformation energy and resulted in full recrystallization of the deformed microstructure during the following solution treatment. The formation of recrystallized microstructure reduced the dislocation density and the heterogeneous precipitate nucleation positions which limited the strengthening phase precipitation in matrix and accelerated the precipitation along grain boundaries, resulted in fewer T1precipitates, coarse grain-boundary precipitates(GBPs), and wider precipitate-free zones(PFZs). The localized strain may be concentrated on the grain boundary to induce the dislocation pile-up, breaking of the GBPs, and intergranular fracture during stretching.

关键词： Al-Cu-Li alloys Rolling Mechanical properties Microstructure evolution Fracture

来源：评论

学校读者我要写书评

暂无评论

Ni-ANIPE-enabled dynamic kinetic asymmetric addition of ketones with organoboronates

引用

science China Chemistry 2023年第9期66卷 2437-2438页

作者： Yifeng Chen Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research CenterFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China

The enantioenriched tertiary alcohols are among the most privileged skeletons in pharmaceuticals,natural products and ***,tremendous effects have been devoted to constructing this chiral moiety,which constitutes the cornerstones in modern organic ***,the enantioselective nucleophilic addition of ketones functionality with the organometallics reagents represents one of the most reliable strategies to forge the tertiary carbon-oxygen bond.

关键词： synthesis tertiary boron

来源：评论

学校读者我要写书评

暂无评论

Nano-refinement of the face-centered cubic Zr(Fe,Cr)_(2)secondary phase particles in Zircaloy-4 alloy via localized-shearing/bending-driven fracture under high-temperature compression

引用

Journal of Materials science & technology 2023年第34期165卷 8-16页

作者： Fuzhou Han Geping Li Fusen Yuan Wenbin Guo Jie Ren Qichen Wang Yingdong Zhang Ali Muhammad Chengze Liu Hengfei Gu Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China University of Chinese Academy of Sciences Beijing 100049China

Nanoparticles are extensively introduced to improve the mechanical,physical,and chemical properties of *** the present study,the underlying nano-refinement mechanisms of face-centered cubic Zr(Fe,Cr)_(2)secondary phase particles(SPPs)that precipitated in Zircaloy-4 alloy under high-temperature compression were investigated in detail by utilizing high-resolution transmission electron microscopy(HRTEM)and conventional TEM *** frequently observed Zr(Fe,Cr)_(2)SPPs were incoherent with the matrix and exhibited brittle fracture behaviors without measurable *** observations revealed two mechanisms underlying the nano-refinement of incoherent micro-sized SPPs via localized shear fracture on{11¯2}SPP and nanoprecipitate-assisted bending fracture,*** latter was,for the first time,found to occur when the movements of large SPPs were blocked by nanometer-sized SPP during alloy ***,two force models were proposed to visualize their potential nano-refinement *** knowledge attained from this study sheds new light on the deformation behaviors of Zr(Fe,Cr)_(2)SPPs and their associated size refinement mechanisms under high-temperature compression,and is expected to greatly benefit the process optimization of zirconium alloys to achieve precipitate nano-refinement.

关键词： Secondary phase particles Nano-refinement mechanism Shearing and bending fracture modes Zirconium alloys High-temperature compression

来源：评论

学校读者我要写书评

暂无评论

Enriching the Transfer Learning with Pre-Trained Lexicon Embedding for Low-Resource Neural Machine Translation

引用

Tsinghua science and technology 2022年第1期27卷 150-163页

作者： Mieradilijiang Maimaiti Yang Liu Huanbo Luan Maosong Sun the Institute for Artificial Intelligence Beijing National Research Center for Information Science and TechnologyDepartment of Computer Science and TechnologyTsinghua UniversityBeijing 100084China the Beijing Academy of Artificial Intelligence Beijing Advanced Innovation Center for Language ResourcesBeijing 100084China

Most State-Of-The-Art(SOTA) Neural Machine Translation(NMT) systems today achieve outstanding results based only on large parallel *** large-scale parallel corpora for high-resource languages is easily ***,the translation quality of NMT for morphologically rich languages is still unsatisfactory,mainly because of the data sparsity problem encountered in Low-Resource Languages(LRLs).In the low-resource NMT paradigm,Transfer Learning(TL) has been developed into one of the most efficient *** is difficult to train the model on high-resource languages to include the information in both parent and child models,as well as the initially trained model that only contains the lexicon features and word embeddings of the parent model instead of the child languages *** this work,we aim to address this issue by proposing the language-independent Hybrid Transfer Learning(HTL) method for LRLs by sharing lexicon embedding between parent and child languages without leveraging back translation or manually injecting ***,we train the High-Resource Languages(HRLs) as the parent model with its ***,we combine the parent and child language pairs using the oversampling method to train the hybrid model initialized by the previously parent ***,we fine-tune the morphologically rich child model using a hybrid ***,we explore some exciting discoveries on the original TL *** results show that our model consistently outperforms five SOTA methods in two languages Azerbaijani(Az) and Uzbek(Uz).Meanwhile,our approach is practical and significantly better,achieving improvements of up to 4:94 and 4:84 BLEU points for low-resource child languages Az ! Zh and Uz ! Zh,respectively.

关键词： artificial intelligence natural language processing neural network machine translation low-resource languages transfer learning

来源：评论

学校读者我要写书评

暂无评论

Magnetic Topological Dirac Semimetal Transition Driven by SOC in EuMg_(2)Bi_(2)

引用

Chinese Physics Letters 2024年第1期41卷 63-67页

作者：王佳萌钱浩吉姜琦乔山叶茂 State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Research Center for Intelligent Chips and Devices Zhejiang LabHangzhou 311121China Center for Transformative Science ShanghaiTech UniversityShanghai 201210China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China

Magnetic topological semimetals have been at the forefront of condensed matter physics due to their ability to exhibit exotic transport *** the interplay between magnetic and topological orders in systems with broken time-reversal symmetry is crucial for realizing non-trivial quantum *** delve into the electronic structure of the rare-earth-based antiferromagnetic Dirac semimetal EuMg_(2)Bi_(2) using first-principles calculations and angle-resolved photoemission *** calculations reveal that the spin-orbit coupling(SOC)in EuMg_(2)Bi_(2) prompts an insulator to topological semimetal transition,with the Dirac bands protected by crystal *** linearly dispersive states near the Fermi level,primarily originating from Bi 6p orbitals,are observed on both the(001)and(100)surfaces,confirming that EuMg_(2)Bi_(2) is a three-dimensional topological Dirac *** research offers pivotal insights into the interplay between magnetism,SOC and topological phase transitions in spintronics applications.

关键词： spectroscopy topological Dirac

来源：评论

学校读者我要写书评

暂无评论

Tuning surface reactivity towards high-performance hard carbon in Li/Na/K-ion batteries

引用

Journal of Energy Chemistry 2025年第4期103卷 27-36页

作者： Wang Zhou Dan Wang Ying Mo Rui Tang Peng Gao Miaomiao Han Shi Chen Keigo Wakabayashi Takeharu Yoshii Hirotomo Nishihara Jilei Liu College of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology of Clean EnergyHunan Province Key Laboratory for Advanced Carbon Materials and Applied TechnologyHunan UniversityChangsha 410082HunanChina The Key Laboratory of Micro-nano Energy Materials and Application Technologies University of Hunan Province&College of Physics and Electronic EngineeringHengyang Normal UniversityHengyang 421002HunanChina Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoMacao 999078China Institute of Multidisciplinary Research for Advanced Materials Tohoku University2-1-1 KatahiraAoba-kuSendaiMiyagi 980-8577Japan Advanced Institute for Materials Research(WPI-AIMR) Tohoku University2-1-1 KatahiraAoba-kuSendaiMiyagi 980-8577Japan

Controlling surface chemistry is critically important for improving the initial Coulombic efficiency(ICE)and adsorption capacity of hard carbon anode used in Li/Na/K-ion ***,accurately identifying the types and concentrations of hydrogen/oxygen terminated functional groups(HTFG/OTFGs)and distinguishing their functionalities remain ***,we quantitatively investigated the surface chemistry on hard carbon via ultra-high temperature programed desorption measurements,and uncovered the role of HTFG/OTFGs in influencing ICE and adsorption capacity in Li/Na/K-ions *** C-H group is found to be dominant species on the surface of hard carbon,and presents a positive correlation with ICE values and adsorption *** low reactivity of C-H group with both electrolyte salt and solvent results in the formation of thinner and highly conducive solid electrolyte interphase(SEI)layer,which benefit for the enhanced ICE and improved Li/Na/K-ions diffusion across SEI ***,the pimping trapping effect of C-H groups allows the adsorbed Li/Na/K-ions to migrate into graphitic interlayer quickly,enhancing the slope *** fabricating a C-H group-rich surface chemistry on hard carbon,a high ICE value and satisfactory specific capacity have been *** findings enrich our understanding of the surface chemistry-induced interfacial reaction,which effectively guides the rational design of high-performance hard carbon.

关键词： Hard carbon Surface chemistry C–H bond Initial coulombic efficiency Adsorption capacity

来源：评论

学校读者我要写书评

暂无评论

Modulating Ru–O bond covalency via Ga-doping for enhanced oxygen evolution reaction in acid

引用

science China Chemistry 2025年

作者： Zhongliang Liu Heng Liu Kai Zhou Miaomiao Liu Tianrui Xue Yongjun Shen Hao Li Huihui Li Chunzhong Li Key Laboratory for Ultrafine Materials of Ministry of Education School of Chemical Engineering East China University of Science and Technology Advanced Institute for Materials Research (WPI-AIMR) Tohoku University Key Laboratory of Interfacial Physics and Technology Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai Engineering Research Center of Hierarchical Nanomaterials School of Materials Science and Engineering East China University of Science and Technology

The increasing demand for green hydrogen production requires the development of advanced ruthenium （Ru）-based oxide catalysts for the anodic oxygen evolution reaction （OER）.Here,we report the development of a Ga-doped Ru O2catalyst （GaRu O2） that demonstrates enhanced OER performance attributed to modulated Ru–O bond *** fully occupied 3d orbital of Ga stabilizes its oxidation state during OER,while its atomic radius,similar to Ru,helps maintain the initial crystal lattice structure upon ***-situ characterization,kinetic analysis and theoretical calculations reveal that the weakened Ru–O bond covalency lowers the energy barriers for*OH and*OOH formation,thus contributing to an enhanced OER *** resultant Ga-Ru O2achieves a current density of 10 m A cm-2at a low overpotential of 203 m V and demonstrates durable operation for 500 h in *** work provides valuable insights into the electronic structure engineering of Ru-based catalysts for practical water electrolysis applications.

关键词：

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：