检索结果-内蒙古大学图书馆

SSRN 2025年

作者： Wang, Kexin Zhang, Hongda Xie, Zhuoting Li, Shihuai Giunchiglia, Fausto Xu, Hao Han, Qinghe Guo, Deming Qin, Yanguo Orthopaedic Medical Center The Second Norman Bethune Hospital of Jilin University Changchun130041 China Joint International Research Laboratory of Ageing Active Strategy and Bionic Health in Northeast Asia Ministry of Education Jilin Provincial Key Laboratory of Orthopaedics Jilin University Changchun130041 China College of Computer Science and Technology Jilin University Changchun130012 China Department of Information Engineering and Computer Science University of Trento The Autonomous Province of Trento Italy Radiology Department The Second Norman Bethune Hospital of Jilin University Changchun China

Purpose: This study aims to develop and validate an artificial intelligence (AI) model based on DenseNet3D to predict visual outcomes in patients with open globe injury (OGI) using orbital computed tomography (CT) scans. The model seeks to guide emergency treatment decisions and improve clinical management. Design: A retrospective study designed to develop and validate a deep learning-based prediction model for visual outcomes in OGI patients. Participants: The study included 391 OGI patients treated at the Second Hospital of Jilin University. Methods: Orbital CT scans from 391 patients were annotated using ITK-SNAP to identify key OGI features, including intraocular foreign bodies, hyphema, traumatic cataract, lens dislocation, vitreous hemorrhage, posterior scleral rupture, retinal tears, retinal detachment, subretinal hemorrhage, retinal prolapse, choroidal injuries, optic nerve damage, and orbital fractures. A modified DenseNet architecture extracted imaging features from the annotated regions. The model's performance in predicting postoperative visual recovery was evaluated using five-fold cross-validation, with metrics including accuracy, F1 score, precision, recall, area under the precision-recall curve (PR-AUC), and area under the receiver operating characteristic curve (ROC-AUC). Gradient-weighted Class Activation Mapping (Grad-CAM) was applied to generate visual heatmaps, providing insights into the model's interpretability. The model’s performance was compared with the Ocular Trauma Score (OTS) to assess its consistency with traditional clinical methods. Main Outcome Measures: Accuracy, F1 score, PR AUC, Precision, Recall, and ROC AUC of the *** model exhibited strong predictive performance, achieving an accuracy of 0.824, an F1 score of 0.870, a PR-AUC of 0.946, a precision of 0.858, a recall of 0.889, and an ROC-AUC of 0.906. These metrics demonstrated performance comparable to the conventional OTS system. Conclusions: The proposed AI model

关键词： Computerized tomography

来源：评论

学校读者我要写书评

暂无评论

Reinforcement Learning Based Truck-and-Drone Coordinated Delivery

IEEE Transactions on Artificial Intelligence

引用

IEEE Transactions on Artificial Intelligence 2023年第4期4卷 754-763页

作者： Wu, Guohua Fan, Mingfeng Shi, Jianmai Feng, Yanghe Central South University School of Traffic Transportation Engineering Changsha410073 China National University of Defense Technology Science and Technology on Information Systems Engineering Laboratory College of System Engineering Changsha410073 China National University of Defense Technology College of Systems Engineering Changsha410073 China

Coronavirus disease 2019 has brought a great challenge to the supply of daily necessities and medical items for home-quarantined people. Considering the unmanned operation, agility, and use of clean energy of drones, we propose a novel truck-and-drone coordinated delivery system that does not require direct human contact during the delivery process. All final deliveries are completed by the drone while the truck acts as a movable charging station and a carrier, so that the contagion risks are reduced. Moreover, we spilt the whole delivery problem into the customer-clustering problem and the routing problems of both the truck and the drone. An encoder-decoder framework combined with reinforcement learning is created to solve the routing problems without handcrafted designed heuristics. We design the different problem contexts specific to the truck routing problem and the drone routing problem. The experimental results show that the proposed approach has good generality and can consequently be applied to problems of different scales with high time efficiency. © 2020 IEEE.

关键词： Reinforcement learning

来源：评论

学校读者我要写书评

暂无评论

Design of Double Cladding Nearly Zero Dispersion Flattened Nonlinear Photonic Crystal Fiber

引用

Chinese Physics Letters 2009年第11期26卷 88-91页

作者：王伟侯蓝田鹿鸣周桂耀 The College of Information Science and Engineering Yanshan University Qinhuangdao 066004 Key Laboratory of Metastable Materials Science and Technology Yanshan University Qinhuangdao 066001

We present a design of double cladding nearly zero dispersion flattened nonlinear photonic crystal fiber （PCF） with the core consisting of seven missing holes. The dispersion of the designed PCF fluctuates from -0.28 to 0.29 ps·km^-1·nm^-1 in the range of 1.35-1.795μm and the dispersion slope is -0.0038 ps·km^-1·nm^-2at 1.55μm. Due to its small air-hole to air-hole pitch in the inner cladding, the effective mode area is 6.48μm2 and the effective nonlinearity V is as high as 13.78 W^-1 km^-1 at 1.55μm. Two layers of air-hole rings in the outer cladding ensures the loss of the fundamental mode to be 2.9 dB/km at 1.55μm and two more air-hole rings can further reduce the fundamental mode＇s loss to the level of 4.2 ×10^-3 dB/km.

关键词： Optics quantum optics and lasers

来源：评论

学校读者我要写书评

暂无评论

Image quality assessment metrics by using directional projection

引用

Chinese Optics Letters 2008年第7期6卷 491-494页

作者：庞建新张荣张晖黄轩刘政凯 MOE-Microsoft Key Laboratory of Multimedia Computing and Communication Department of Electronic Engineering and Information ScienceUniversity of Science and Technology of ChinaHefei 230027

Objective image quality measure, which is a fundamental and challenging job in image processing, evaluates the image quality consistently with human perception automatically. On the assumption that any image distortion could be modeled as the difference between the directional projection-based maps of reference and distortion images, we propose a new objective quality assessment method based on directional projection for full reference model. Experimental results show that the proposed metrics are well consistent with the subjective quality score.

关键词： PSNR SVD JPEG Image quality assessment metrics by using directional projection DMOS

来源：评论

学校读者我要写书评

暂无评论

Electricity–carbon dual response for energy-intensive enterprise: A co-optimization approach

引用

Renewable Energy 2025年 251卷

作者： Tan, Mao Jiang, Hongwei Kuang, Yi Li, Kang Wang, Rui Li, Zibin Hunan National Center for Applied Mathematics Xiangtan Hunan411105 China School of Automation and Electronic Information Xiangtan University Xiangtan Hunan411105 China School of Electronic and Electrical Engineering University of Leeds LeedsLS2 9JT United Kingdom College of Systems Engineering National University of Defense Technology Changsha Hunan410073 China Xiangjiang Laboratory Changsha Hunan410205 China

Renewable energy is regarded by energy-intensive enterprises as a critical measure to reduce both carbon emissions and costs. However, integrating renewable energy introduces a new challenge: how to strike a balance between reducing carbon emission, controlling operating cost, and addressing market cost. This study proposes a co-optimization approach to achieve electricity–carbon dual response to emissions and operating-market costs. First, a pre-scheduling and adjustment two-stage distributionally robust optimization model based on the Wasserstein set is proposed to address renewable energy uncertainty. Second, an equivalence mechanism between carbon quotas and green electricity certificates is introduced to optimize market cost, while a node-specific time and spatial low-carbon demand response is implemented to reduce carbon emissions. Furthermore, an electricity–carbon dual response collaborative strategy is proposed to balance the optimization of costs and emissions. Experimental results demonstrate that the proposed method achieves a dual reduction in operating-market costs (4.66%) and emissions (7.10%), while ensuring the reliability of scheduling plans under full renewable energy utilization. © 2025 Elsevier Ltd

关键词： Solar fuels

来源：评论

学校读者我要写书评

暂无评论

The bulk motion of gas in the core of the Centaurus galaxy cluster

引用

Nature 2025年第8050期638卷 365-369页

作者： Majumder, Anwesh Hosogi, Kokoro Sun, Ming Plšek, Tomáš Werner, Norbert Kondo, Marie Zhuravleva, Irina Yukita, Mihoko Yoshida, Tessei Yoneyama, Tomokage Yaqoob, Tahir Yamauchi, Shigeo Yamauchi, Makoto Yamasaki, Noriko Y. Yamaoka, Kazutaka Yamaguchi, Hiroya Yamada, Shinya Yamada, Satoshi Williams, Brian J. Watanabe, Shin Vink, Jacco Uno, Shinichiro Ueda, Yoshihiro Uchiyama, Hideki Uchida, Yuusuke Uchida, Nagomi Uchida, Hiroyuki Tsuru, Takeshi G. Tsunemi, Hiroshi Tsujimoto, Masahiro Tsuboi, Yohko Trigo, María Díaz Terashima, Yuichi Terada, Yukikatsu Tashiro, Makoto Tanimoto, Atsushi Tanaka, Takaaki Tamura, Keisuke Tamagawa, Toru Takeo, Mai Takahashi, Hiromitsu Szymkowiak, Andrew Suzuki, Hiromasa Smith, Randall Simionescu, Aurora Shidatsu, Megumi Seta, Hiromi Sawada, Makoto Sato, Toshiki Sato, Kosuke Pottschmidt, Katja Porter, Frederick Scott Plucinsky, Paul Petre, Robert Paltani, Stephane Ota, Naomi Okajima, Takashi Ogorzalek, Anna Ogawa, Shoji Odaka, Hirokazu Noda, Hirofumi Nobukawa, Masayoshi Nobukawa, Kumiko Ness, Jan-Uwe Nakazawa, Kazuhiro Nakajima, Hiroshi Mushotzky, Richard Murakami, Hiroshi Mukai, Koji Mori, Koji Mizuno, Tsunefumi Mizumoto, Misaki Mitsuishi, Ikuyuki Miller, Jon M. Miller, Eric D. Mernier, François McNamara, Brian McCammon, Dan Matsushita, Kyoko Matsumoto, Hironori Markevitch, Maxim Maeda, Yoshitomo Loewenstein, Michael Leutenegger, Maurice Kubota, Aya Kohmura, Takayoshi Kobayashi, Shogo Kitamoto, Shunji Kilbourne, Caroline Kelley, Richard Kanemaru, Yoshiaki Katsuda, Satoru Kara, Erin Kallman, Timothy Kaastra, Jelle Ishisaki, Yoshitaka Ishikawa, Kumi Ishida, Manabu Ichinohe, Yuto Hornschemeier, Ann Hodges-Kluck, Edmund Hell, Natalie Hayashi, Takayuki Hayashi, Katsuhiro Hatsukade, Isamu Hamaguchi, Kenji Hagino, Kouichi Guainazzi, Matteo Gu, Liyi García, Javier A. Gallo, Luigi Furuzawa, Akihiro Fukushima, Kotaro Fukazawa, Yasushi Fujita, Yutaka Fujimoto, Ryuichi Foster, Adam Ezoe, Yuichiro Eguchi, Satoshi Enoto, Teruaki Eckert, Dominique Eckart, Megan E. Ebisawa, Ken Dotani, Tadayasu Done, Chris Department of Physics Ehime University Matsuyama Japan Department of Astronomy University of Maryland College Park MD United States NASA/Goddard Space Flight Center Greenbelt MD United States Center for Research and Exploration in Space Science and Technology NASA/GSFC (CRESST II) Greenbelt MD United States Department of Physics University of Tokyo Tokyo Japan Department of Physics Technion Haifa Israel Center for Space Science and Technology University of Maryland Baltimore County Baltimore MD United States Center for Astrophysics | Harvard-Smithsonian Cambridge MA United States Lawrence Livermore National Laboratory Livermore CA United States Department of Astronomy University of Michigan Ann Arbor MI United States SRON Netherlands Institute for Space Research Leiden Netherlands Centre for Extragalactic Astronomy Department of Physics University of Durham Durham United Kingdom Institute of Space and Astronautical Science (ISAS) Japan Aerospace Exploration Agency (JAXA) Kanagawa Japan Department of Physics Kyoto University Kyoto Japan Department of Economics Kumamoto Gakuen University Kumamoto Japan Department of Physics Tokyo Metropolitan University Tokyo Japan Department of Physics Hiroshima University Hiroshima Japan Department of Physics Fujita Health University Toyoake Japan Department of Astronomy and Physics Saint Mary’s University Halifax Nova Scotia Canada Cahill Center for Astronomy and Astrophysics California Institute of Technology Pasadena CA United States European Space Agency (ESA) European Space Research and Technology Centre (ESTEC) Noordwijk Netherlands Faculty of Engineering University of Miyazaki Miyazaki Japan RIKEN Nishina Center Saitama Japan Leiden Observatory University of Leiden Leiden Netherlands Kavli Institute for Astrophysics and Space Research Massachusetts Institute of Technology Cambridge MA United States Department of Physics Saitama University Saitama Japan Department of Physics Rikkyo Universi

Galaxy clusters contain vast amounts of hot ionized gas known as the intracluster medium (ICM). In relaxed cluster cores, the radiative cooling time of the ICM is shorter than the age of the cluster. However, the absence of line emission associated with cooling suggests heating mechanisms that offset the cooling, with feedback from active galactic nuclei (AGNs) being the most likely source^1,2. Turbulence and bulk motions, such as the oscillating (‘sloshing’) motion of the core gas in the cluster potential well, have also been proposed as mechanisms for heat distribution from the outside of the core^3,4. Here we present X-ray spectroscopic observations of the Centaurus galaxy cluster with the X-Ray Imaging and Spectroscopy Mission satellite. We find that the hot gas flows along the line of sight relative to the central galaxy, with velocities from 130 km s⁻¹ to 310 km s⁻¹ within about 30 kpc of the centre. This indicates bulk flow consistent with core gas sloshing. Although the bulk flow may prevent excessive accumulation of cooled gas at the centre, it could distribute the heat injected by the AGN and bring in thermal energy from the surrounding ICM. The velocity dispersion of the gas is found to be only ≲120 km s⁻¹ in the core, even within about 10 kpc of the AGN. This suggests that the influence of the AGN on the surrounding ICM motion is limited in the cluster. © The Author(s), under exclusive licence to Springer Nature Limited 2025.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Terahertz Aerospace Communications: Enabling Technologies and Future Directions

arXiv

引用

arXiv 2025年

作者： Gao, Weijun Han, Chong Chen, Zhi Chen, Yong He, Yuanzhi Zhang, Wenjun Laboratory Shanghai Jiao Tong University Shanghai200240 China Shanghai Jiao Tong University Shanghai200240 China University of Electronic Science and Technology of China Chengdu611731 China Chengdu Fluid Dynamics Innovation Center Chengdu China Institute of Systems Engineering Academy of Military Sciences Beijing100141 China Shanghai Jiao Tong University Shanghai200240 China

To achieve ubiquitous connectivity in next-generation networks through aerospace communications while maintaining high data rates, Terahertz (THz) band communications (0.1-10 THz) with large continuous bandwidths are considered a promising candidate technology. However, key enabling techniques and practical implementations of THz communications for aerospace applications remain limited. In this paper, the wireless channel characteristics, enabling communication techniques, and networking strategies for THz aerospace communications are investigated, aiming to assess their feasibility and encourage future research efforts toward system realization. Specifically, the wireless channel characteristics across various altitudes and scenarios are first analyzed, focusing on modeling the interaction between the THz wave and the external environment, from ground to outer space. Next, key enabling communication technologies, including multiple-input multiple-output (MIMO) technique, beam alignment and tracking, integrated communication and radar sensing (ICARS), and resource allocation for networking are discussed. Finally, the existing challenges and possible future directions are summarized and discussed. Copyright © 2025, The Authors. All rights reserved.

关键词： Radar tracking

来源：评论

学校读者我要写书评

暂无评论

ST-Booster: An Iterative SpatioTemporal Perception Booster for Vision-and-Language Navigation in Continuous Environments

arXiv

引用

arXiv 2025年

作者： Yue, Lu Zhou, Dongliang Xie, Liang Yin, Erwei Zhang, Feitian Department of Advanced Manufacturing and Robotics the State Key Laboratory of Turbulence and Complex Systems College of Engineering Peking University Beijing100871 China Defense Innovation Institute Academy of Military Sciences Beijing100071 China Tianjin Artificial Intelligence Innovation Center Tianjin300450 China Department of Computer Science Harbin Institute of Technology Shenzhen Xili University Town Shenzhen518055 China

Vision-and-Language Navigation in Continuous Environments (VLN-CE) requires agents to navigate unknown, continuous spaces based on natural language instructions. Compared to discrete settings, VLN-CE poses two core perception challenges. First, the absence of predefined observation points leads to heterogeneous visual memories and weakened global spatial correlations. Second, cumulative reconstruction errors in three-dimensional scenes introduce structural noise, impairing local feature perception. To address these challenges, this paper proposes ST-Booster, an iterative spatiotemporal booster that enhances navigation performance through multi-granularity perception and instruction-aware reasoning. ST-Booster consists of three key modules — Hierarchical SpatioTemporal Encoding (HSTE), Multi-Granularity Aligned Fusion (MGAF), and Value-Guided Waypoint Generation (VGWG). HSTE encodes long-term global memory using topological graphs and captures short-term local details via grid maps. MGAF aligns these dual-map representations with instructions through geometry-aware knowledge fusion. The resulting representations are iteratively refined through pretraining tasks. During reasoning, VGWG generates Guided Attention Heatmaps (GAHs) to explicitly model environment-instruction relevance and optimize waypoint selection. Extensive comparative experiments and performance analyses are conducted, demonstrating that ST-Booster outperforms existing state-of-the-art methods, particularly in complex, disturbance-prone environments. Copyright © 2025, The Authors. All rights reserved.

关键词： Topology

来源：评论

学校读者我要写书评

暂无评论

Fish Skin Inspired Scale Armored Sliding Surfaces

引用

engineering 2025年

作者： Zhang, Jialiang Yang, Qing Ma, Qingyun Ren, Fangzheng Cheng, Yang Gou, Xiaodan Liang, Jie Chen, Feng State Key Laboratory for Manufacturing System Engineering & Shaanxi Key Laboratory of Photonics Technology for Information School of Electronic Science and Engineering Xi'an Jiao Tong University Xi'an 710049 China School of Instrument Science and Technology Xi'an Jiaotong University Xi'an 710049 China

Hard scales in scaly fish species ensure the structural and functional integrity of the inner skin and body, even when subjected to various types of external forces. Mucus and oil secreted from the inner layer of the fish skin to the surface exhibit resistance to a wide range of liquids, maintaining the antifouling properties of the fish skin surface. Inspired by these biological structures, ultra-sturdy and durable scale-armored-sliding surfaces (SASSs) were fabricated in this study using femtosecond laser electrodeposition (FED). In the FED method, a scaly structure is grown from the substrate across a sliding layer to form an SASS. The unique scale-armored structure offers protection against impact and abrasion while maintaining the performance and integrity of the structure. The mechanical sturdiness of the SASS improved by four orders of magnitude compared to that of the conventional antifouling surface. In addition, the SASS exhibited remarkable chemical durability, excellent hydraulic pressure resistance, liquid repellency, and good corrosion resistance based on characterization using various methods. FED enables the preparation of SASS on several materials, including Cu and Al and more. SASS fabricated using FED has great potential for the application of antifouling surfaces in extremely harsh environments. © 2024 THE AUTHORS

关键词： Femtosecond laser Fish skin Mechanical sturdiness Scale armor Sliding surface

来源：评论

学校读者我要写书评

暂无评论

Electrical characterization of integrated passive devices using thin film technology for 3D integration

引用

Journal of Zhejiang University-science C(Computers and Electronics) 2013年第4期14卷 235-243页

作者： Xin SUN Yun-hui ZHU Zhen-hua LIU Qing-hu CUI Sheng-lin MA Jing CHEN Min MIAO Yu-feng JIN National Key Laboratory of Science and Technology on Micro/Nano Fabrication Peking University Department of Mechanical and Electrical Engineering Xiamen University Information Microsystem Institute Beijing Information Science and Technology University

With the development of 3D integration technology, microsystems with vertical interconnects are attracting attention from researchers and industry applications. Basic elements of integrated passive devices （IPDs）, including inductors, capacitors, and resistors, could dramatically save the tbotprint of the system, optimize the form factor, and improve the performance of radio frequency （RF） systems. In this paper, IPDs using thin film built-up technology are introduced, and the design and characterization of coplanar waveguides （CPWs）, inductors, and capacitors are presented.

关键词： Integrated passive device （IPD） Benzocyclobutcne （BCB） Thin flim 3D Integration

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：