检索结果-内蒙古大学图书馆

International Conference on Artificial Intelligence and Autonomous Transportation, AIAT 2024

作者： Wei, Qingbo Xuan, Qipeng Su, Kui Sha, Zhiren Su, Yuejiang Guangzhou Public Transport Data Management Center Co. Ltd. Guangzhou510620 China Guangzhou Municipal Transportation Bureau Guangzhou510620 China Guangzhou Fundway Smart Transportations R&D Co. Ltd. Guangzhou510000 China School of Civil Engineering and Transportation South China University of Technology Guangzhou510641 China

ISBN: (纸本)9789819639601

In traditional design of bus sub-station lines, most are based on experience model, which is easy to distribute the same direction lines at different sub-stations, resulting in a decline in passenger travel experience. To solve this problem, this study proposes an automatic calculation method for the optimal bus sub-station lines. Based on the actual travel Od of bus passengers, stopping lines and their departure frequencies, distribution of downstream bus station, and the stopping capacity of each sub-station, a Genetic Algorithm (GA) model is constructed to solve the optimal scheme. In the GA algorithm, the fitness function is "passengers with the same Od board at the same sub-station as much as possible, and travels of the same direction board at the same sub-station as much as possible", and in the process of selection, crossover and mutation, limitation of each sub-station’s stopping capacity is also fully considered. Finally, some sub-stations in Guangzhou is taken as the test object, with "the total number of passengers boarding at the same sub-station" and other indicators are taken as the test index. results show that after optimization, the stopping sub-station of bus lines in the same direction are more concentrated, and the number of passengers who fully enjoy taking the line at the same station increases by 71%. Overall, this study can provide engineering application solutions for automatic design of bus sub-station lines. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Genetic algorithms

来源：评论

学校读者我要写书评

暂无评论

Effect of Post-Annealing and Oxygen on the Properties of Sn-doped β-Ga2O3 Thin Film

引用

Transactions on Electrical and Electronic Materials 2025年 1-11页

作者： Kim, Jihyeong Kubota, Yuta Matsushita, Nobuhiro Lee, Gonjae Kyoung, Sinsu Kim, Kyunghwan Hong, Jeongsoo Department of Electrical Engineering Gachon University Seongnnam Republic of Korea Department of Materials Science and Engineering School of Materials and Chemical Technology Tokyo Institute of Technology Tokyo Japan R&D Center HL Mando Corporation Seongnam-si Republic of Korea PowerCubeSemi Inc. Seongnam-si Korea

β-Ga2O3 is a remarkable material for next-generation power semiconductors and optoelectronics owing to its suitable properties, including excellent thermal and chemical stability, wide band gap, and large breakdown voltage. In this study, Sn-doped β-Ga2O3 thin films with the thickness of 200 nm were deposited on Si substrates at different O2 flow rates using reactive sputtering. After sputtering, the samples were post-annealed at various temperatures and time, and the structural and electrical properties of the Sn-doped β-Ga2O3 thin films were investigated. X-ray diffraction analysis confirmed the appearance of the beta phase of Ga2O3 at 600 ℃, and the crystallization trend of each condition was investigated. The surface morphology of the films was investigated using scanning electron microscopy, whereby cracks were observed above 600 ℃, which is likely ascribed to the film stress owing to the lattice and thermal expansion coefficient mismatch between Si substrate and Ga2O3 film. Finally, the electrical properties of the Ga2O3 thin films were examined by Hall-effect measurement. Therefore, the effects of the post-annealing and O2 flow rate conditions on Sn-doped β-Ga2O3 thin films were successfully investigated.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Mitigating Gate Voltage Oscillation in Parallel SiC Power Modules for xEV 14

Mitigating Gate Voltage Oscillation in Parallel SiC Power Mo...

引用

14th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2025

作者： Komo, Hideo rogers, Michael Steiner, Mark Motto, Eric Taguchi, Koichi Kawahara, Chihiro Nakashima, Junichi Mukunoki, Yasushige Inokuchi, Seiichiro Yoneyama, rei Mitsubishi Electric US INC. Semiconductor & Device Division ExportPA United States Melco Semiconductor Engineering Corp. Fukuoka Japan Advanced Technology R&d Center Mitsubishi Electric Corpolation Amagasaki Japan Mistubishi Electric Corporation Fukuoka Japan Mitsubishi Electric Corpolation Fukuoka Japan

ISBN: (纸本)9798331516116

Global vehicle electrification is accelerating to combat global warming. recently, Silicon Carbide (SiC) Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs) are increasingly used in electric vehicle inverters for their low power loss at fast switching speeds compared to conventional Silicon Insulated Gate Bipolar Transistors (IGBTs). Although SiC MOSFETs are usually used in parallel to gain power, these fast-switching speeds can lead to gate voltage oscillations across paralleled SiC chips, potentially leading to failures such as gate drive malfunction and gate oxide breakdown. This paper addresses the oscillation caused by source voltage fluctuations and unbalanced gate drive circuit characteristics. We propose a method to mitigate these issues using a symmetrical module structure which equalizes stray inductance between modules. © 2025 IEEE.

关键词： Silicon carbide

来源：评论

学校读者我要写书评

暂无评论

Modified Kelvin-Voigt fractional derivative model for viscoelasticity measurement in optical coherence elastography

引用

Chinese Optics Letters 2025年第1期23卷 93-101页

作者： Chenming Yang Zhongliang Li Nan Nan Teng Liu Yaoli Luo Xiangzhao Wang Advanced Light Source and System R&D Center Department of Advanced Optical and Microelectronic EquipmentShanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China School of Optical-Electrical and Computer Engineering University of Shanghai for Science and TechnologyShanghai 200093China State Key Laboratory of Extreme Photonics and Instrumentation College of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China

Optical coherence elastography(OCE)can quantitatively obtain the viscoelasticity of tissues using rheological models and is widely applied to the clinical diagnosis of ***,commonly used rheological models in OCE do not account for the distinctive dependence of high-frequency storage and loss moduli on frequency in tissues,which results in the rheological models failing to accurately measure the viscoelastic properties of *** this paper,a modified Kelvin-Voigt fractional derivative model is presented based on the power-law behavior of soft tissues and the dependence of high-frequency complex shear modulus on frequency in living *** the rheometer and OCE tests,the modified model can provide the prediction of the power-law relationship between the low-frequency shear viscosity and frequency;compared with the Kelvin-Voigt and Kelvin-Voigt fractional derivative models,the modified model has a higher goodness-of-fit(accuracy>96%)for the high-frequency storage moduli of gelatin ***,the proposed model can reduce the root mean square error of fit by approximately 83%for the high-frequency(1–128 kHz)storage modulus of the polydimethylsiloxane phantoms obtained from publicly available ***,the modified model accurately predicts the mechanical properties of biomimetic materials over a wide frequency range,with the potential to more accurately reflect pathological changes in tissues.

关键词： optical coherence tomography optical coherence elastography viscoelasticity rheological model

来源：评论

学校读者我要写书评

暂无评论

Integrated Well Network design Mode for CO2 EOr and Storage and its Application in L reservoir

Integrated Well Network Design Mode for CO2 EOR and Storage ...

引用

2025 International Petroleum technology Conference, IPTC 2025

作者： Wu, Zangyuan Tang, Yongliang Lian, Liming Zhou, daiyu Zhao, Haitao Shao, Guangqiang Feng, Qihong Zhou, Wei Li, Hong Bian, Wanjiang Zhang, Liang du, Hongbao Luo, Min Huang, Xingning Tarim Oilfield Company PetroChina Xinjiang Korla China R&D Center for Ultra-Deep Complex Reservoir Exploration and Development CNPC Xinjiang Korla China School of Petroleum Engineering China University of Petroleum East China Qingdao China Research Institute of Petroleum E&D Petrochina CNPC Beijing China Chengdu CK Energy Technology Co. Ltd. Sichuan Chengdu China

ISBN: (纸本)9781959025436

This paper addresses the challenge of difficulty in adjusting late-stage production in water-flooded reservoirs and proposes an integrated well network design mode for CO2 enhanced oil recovery (EOr) and storage. The well network is designed according to the full life cycle of carbon capture, utilization, and storage (CCUS), meeting the requirements of both CO2 EOr and storage phases. It extends the implementation time of CO2 EOr schemes to enhance oil recovery while ensuring effective CO2 storage, aligning with the overall strategy of global green and low-carbon development. The overall approach involves the use of a three-dimensional CO2 flooding injection and recovery well network, with progressive development in the vertical stratigraphic layers to maximize the utilization of existing old wells. The stratigraphic reconstruction involves the CO2 flooding injection and recovery well network, ensuring that new gas injection wells meet the requirements for CO2 injection processes and production rates, while also serving as replacements for gas injection in other stratigraphic layers. Production wells make use of the original old wells, and well completion methods are adjusted to achieve the development of replacement layers. The "top injection, middle production, bottom support" three-stage development method is designed to fully utilize the high points of reservoir microstructures and bottom water energy. Finally, well network optimization is achieved through streamline tracking simulation methods. The proposed technology has been applied in the CO2 enhanced oil recovery plan for the L reservoir. Initially focusing on CO2 flooding for oil recovery and shifting to CO2 storage later, it is projected to achieve a cumulative CO2 injection of tens of millions of tons over 46 years (including 40% recycled injection), with a displacement factor reaching 1.57PV. After deducting the recycled carbon amount, the cumulative carbon storage exceeds 6 million tons, affecting a vo

关键词： Crude oil

来源：评论

学校读者我要写书评

暂无评论

Learning to Stop Overthinking at Test Time

arXiv

引用

arXiv 2025年

作者： Bao, Hieu Tran dat, Nguyen Cong Anh, Nguyen duc Thanh-Tung, Hoang FPT IS AI R&D Center Hanoi Viet Nam FPT Software AI Center Hanoi Viet Nam Kaopiz Solutions Hanoi Viet Nam VNU - University of Engineering and Technology Hanoi Viet Nam

Test time scaling is currently one of the most active research areas that shows promise after training time scaling has reached its limits. deep-thinking (dT) models are a class of recurrent models that can perform easy-to-hard generalization by assigning more compute to harder test samples. However, due to their inability to determine the complexity of a test sample, dT models have to use a large amount of computation for both easy and hard test samples. Excessive test time computation is wasteful and can cause the "overthinking" problem where more test time computation leads to worse results. In this paper, we introduce a test time training method for determining the optimal amount of computation needed for each sample during test time. We also propose Conv-LiGrU, a novel recurrent architecture for efficient and robust visual reasoning. Extensive experiments demonstrate that Conv-LiGrU is more stable than dT, effectively mitigates the "overthinking" phenomenon, and achieves superior accuracy. © 2025, CC BY.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Suppressed grain boundary scattering effect to enhance electrical transport properties of La0.815Sr0.185MnO3 polycrystalline ceramic via high-temperature sintering process

引用

Ceramics International 2025年

作者： Liang, Xiaolu Chen, Zihao Wang, Zhenyu Pan, Zimeng Wang, Yao Wang, Haitao Sun, Jiankun Ma, Jun Jiang, Xuexing Peng, Jubo Gu, Xin Zhang, Jing Liu, Xiang Faculty of Material Science and Engineering Kunming University of Science and Technology Yunnan Kunming650093 China Kunming Kaihang Optoelectronic Technology Co. LTD Yunnan Kunming650200 China Company Limited R&D Center Yunnan Kunming650106 China

Polycrystalline La0.815Sr0.185MnO3 (LSMO) ceramic was synthesized using the sol-gel method. The effect of varying sintering temperatures (1763, 1783, 1803 and 1823 K) on the microstructure and electrical transport properties were systematically investigated. The samples exhibited a distinct dual-peak metal-insulator transition, with the first peak (Tp1) primarily influenced by grain boundary (GB) scattering effect. At lower sintering temperatures, lattice strain induced by the ionic size mismatch between La3+ and Sr2+ ions is transferred to the grain boundaries, increasing their contribution to resistivity. As the sintering temperature rises, the grain boundary effect diminish, leading to a suppression of the Tp1 peak. Elevated sintering temperatures further promote hybridization effect, enhancing the double exchange mechanism. As the temperature increases, this mechanism gradually becomes dominant, leading to a more pronounced influence of the Tp2 peak. Additionally, higher sintering temperatures reduce grain boundary scattering, improving the temperature coefficient of resistivity (TCr). At an optimal sintering temperature of 1803 K, the LSMO ceramic achieved a peak TCr of 10.78 % K−1 near room temperature (284.8 K), demonstrating strong potential for improved performance in uncooled infrared bolometers or electronic switch devices. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Sol-gel process

来源：评论

学校读者我要写书评

暂无评论

A Method for determining Optimal Parameters in Aggregation of distributed Energy resources

A Method for Determining Optimal Parameters in Aggregation o...

引用

Consumer technology (ICCT-Pacific), International Conference on

作者： Hirotaka Takano Takahisa Fukuda Hiroshi Asano Nguyen duc Tuyen Tatsuya Oyama Hisashi Kato Kiyotaka Matsuura Takashi Honma Department of Electrical Electronic and Computer Engineering Gifu University Gifu Japan Department of Electrical Engineering Hanoi University of Science and Technology Hanoi Vietnum R&D Center Tohoku Electric Power Co. Inc. Sendai Japan R&D Department Hokkaido Electric Power Co. Inc. Ebetsu Japan

ISBN: (数字)9798331504120

ISBN: (纸本)9798331504137

This paper presents a method to calculate parameters for aggregating distributed energy resources (dErs), especially electricity consumption of customers. In dEr aggregation, energy resource aggregators reward customers complying with requests of demand response. On the other hand, the aggregators need to financially offset opportunity losses of retail electricity suppliers caused by the dEr aggregation. This is the negawatt compensation. In the authors' proposal, electricity trading is expressed as a problem of social welfare maximization, allowing changes in the profits of aggregators, retailers, and customers to be measured. As a result, the unit prices of monetary rebate to customers and negawatt compensation to retailers can be calculated mathematically.

关键词： Hands Energy resources Electricity Electric variables measurement Pricing Numerical simulation Power markets demand response distributed power generation Proposals

来源：评论

学校读者我要写书评

暂无评论

Study of Health degree Assessment and Prediction for Axle Counter Equipment in Urban rail Transit 4th

Study of Health Degree Assessment and Prediction for Axle Co...

引用

4th International Conference on Mechanical design and Simulation, MdS 2024

作者： Yuan, Jianjun Chu, Pengzi Huang, Chunye Shen, Zhe Yu, Yi Maglev Transportation Engineering R&D Center Tongji University Shanghai201804 China Technology Center Shanghai Shentong Metro Group Co. Ltd. Shanghai201103 China Operating Facilities and Equipment Management Department Shanghai Shentong Metro Group Co. Ltd. Shanghai201103 China Telecom and Signaling Branch Shanghai Metro Maintenance Support Co. Ltd. Shanghai200235 China

ISBN: (纸本)9789819778867

Axle counter equipment is a key component in urban rail transit signal systems, and its stability has a great impact on safety and operation efficiency. In this paper, we pay attention to the assessment and prediction methods of the health degree for axle counter equipment in urban rail transit and the corresponding maintenance suggestions. Mainly, two prediction methods, the GM (1, 1) algorithm and the long short-term memory (LSTM) network, are used to compare the prediction effect of health degree for axle counter equipment. Based on enough historical information, the LSTM network can obtain more accurate prediction results with less data input. © The Author(s) 2025.

关键词： Axles

来源：评论

学校读者我要写书评

暂无评论

Securing the digital Frontier: An Analysis of Cybersecurity Strategies and Obstacles

Securing the Digital Frontier: An Analysis of Cybersecurity ...

引用

2025 IEEE International Conference on Computational, Communication and Information technology, ICCCIT 2025

作者： Saravanan, V. Indumathi, G.S. James, Sathish Kumar Pandi, V. Samuthira Shakila, J. Banumathi, S. Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences Saveetha University Department of Nano Electronics Materials and Sensors Tamil Nadu Chennai India St Joseph's College of Engineering OMR Department of MBA Chennai India BNY Mellon Center PittsburghPA15219 United States Chennai Institute of Technology Centre for Advanced Wireless Integrated Technology Tamil Nadu Chennai India Jeppiaar Engineering College Rajiv Gandhi Salai Department of CSE Chennai India Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology Department of Computer Science India

ISBN: (纸本)9798331512965

In an era where digital connectivity is ubiquitous, the imperative to safeguard cyberspace has never been more pressing. This research delves into the multifaceted landscape of cybersecurity, examining the strategies employed by governments, businesses, and individuals to protect sensitive information and critical infrastructure from cyber threats. By leveraging a mixed-methods approach, which includes a review of existing literature, case studies, and expert interviews, the research provides a nuanced understanding of the cybersecurity ecosystem. Key findings reveal that while technological advancements have bolstered defense mechanisms, including sophisticated malware, advanced persistent threats (APTs), and insider threats, continues to outpace traditional security measures. Moreover, the study underscores the critical role of human factors, such as user error and inadequate training, as significant vulnerabilities. The research concludes with a set of recommendations aimed at enhancing cybersecurity posture, including the adoption of a proactive, adaptive defense strategy, increased investment in cybersecurity education and awareness, and the fostering of international cooperation to combat transnational cybercrime. The insights gleaned from this analysis are intended to inform policymakers, industry leaders, and cybersecurity professionals, equipping them with the knowledge to fortify the digital frontier against evolving threats. © 2025 IEEE.

关键词： Cyber attacks

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：