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Constructed TiO_(2)/WO_(3)heterojunction with strengthened nano-trees structure for highly stable electrochromic energy storage device

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Journal of Advanced Ceramics 2023年第3期12卷 634-648页

作者： Lili Zhao Zhuoan Cai Xiaoyang Wang Wenbo Liao Simin Huang Lingyun Ye Jilie Fang Chunxing Wu Hao Qiu Lei Miao School of Chemical Engineering and Energy Technology Dongguan University of TechnologyDongguan 523808China Guangxi Key Laboratory of Information Materials Engineering Research Center of Electronic Information Materials and DevicesMinistry of EducationSchool of Materials Science and EngineeringGuilin University of Electronic TechnologyGuilin 541004China Guangdong Provincial Key Laboratory of Distributed Energy Systems Dongguan 523808China

Tungsten trioxide(WO_(3))has been widely regarded as a prospective bifunctional material due to its electrochromic and pseudocapacitive properties,while still facing the dilemma of inadequate cycle stability and trapping-induced ***,inspired by the trees-strengthening approach,a unique titanium dioxide(TiO_(2))nanorod arrays strengthened WO_(3)nano-trees(TWNTs)heterojunction was rationally designed and *** sharp contrast to the transmittance modulation(ΔT)attenuation of primary WO_(3)nano-trees during cycling,the TWNTs film showed not only excellent electrochromic performance but also fascinating cycle stability(77.35%retention of the initialΔT after 10,000 cycles).Besides,the trapping-induced degradation could be easily rejuvenated by a potentiostatic de-trapping *** electrochromic energy storage device(EESD)was further assembled based on the TWNTs film to deliver excellentΔT(up to 79.5%at 633 nm),fast switching speed(tc/tb=1.9 s/14.8 s),extremely high coloration efficiency value(443.4 cm^(2)·C^(−1)),and long-term cycle stability(over 10,000 charge/discharge cycles).This innovative study provided in-depth insights into the electrochromism nature and a significant step in the realization of stable electrochromic-energy storage application,paving the way for multifunctional smart windows as well as next-generation optoelectronic devices.

关键词： electrochromic(EC) WO_(3)nano-trees cycle stability TiO_(2)nanorod arrays(TiO_(2)NRAs) energy storage

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Discriminative feature encoding for intrinsic image decomposition

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Computational Visual Media 2023年第3期9卷 597-618页

作者： Zongji Wang Yunfei Liu Feng Lu Key Laboratory of Network Information System Technology(NIST) Aerospace Information Research InstituteChinese Academy of SciencesBeijing 100190China State Key Laboratory of Virtual Reality Technology and Systems School of Computer Science and EngineeringBeihang UniversityBeijing 100191China Peng Cheng Laboratory Shenzhen 518000China

Intrinsic image decomposition is an important and long-standing computer vision *** an input image,recovering the physical scene properties is *** physically motivated priors have been used to restrict the solution space of the optimization problem for intrinsic image *** work takes advantage of deep learning,and shows that it can solve this challenging computer vision problem with high *** focus lies in the feature encoding phase to extract discriminative features for different intrinsic layers from an input *** achieve this goal,we explore the distinctive characteristics of different intrinsic components in the high-dimensional feature embedding *** define feature distribution divergence to efficiently separate the feature vectors of different intrinsic *** feature distributions are also constrained to fit the real ones through a feature distribution *** addition,a data refinement approach is provided to remove data inconsistency from the Sintel dataset,making it more suitable for intrinsic image *** method is also extended to intrinsic video decomposition based on pixel-wise correspondences between adjacent *** results indicate that our proposed network structure can outperform the existing state-of-the-art.

关键词： intrinsic image decomposition deep learning feature distribution data refinement

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Improving real-time physiological signs estimation using plethysmography wave and heterogeneous embedded system

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Journal of Medical engineering and technology 2024年第8期48卷 296-314页

作者： El khadiri, Zakaria Latif, Rachid Saddik, Amine Jenkal, Wissam Laboratory of Systems Engineering and Information Technology LISTI National School of Applied Sciences Ibn Zohr University Agadir Agadir Morocco

Our work presents a real-time embedded implementation of a proposed approach for physiological signs monitoring, such as heart and breathing rates, using a Photoplethysmography signal (PPG) retrieved from digital RGB cameras. The proposed algorithm was implemented in an embedded architecture to assess both the processing time and algorithmic complexity. The proposed method is based on image processing techniques to extract the noisy PPG signal and signal processing, filtering, and decomposition algorithm to estimate the instantaneous vitals indicators. On the embedded implementation side, the common criteria that must be studied are the accuracy of the result estimation, processing time optimisation, and hardware-software adoption. The latter standard is met by the hardware-software co-design concept which will lead to adopting the algorithm’s layers with an embedded platform architecture. On our side, we will principally use the High-Level Synthesis (HLS) as a parallel programming language and the computing homogeneous/heterogeneous devices (CPU/GPU). Our proposed optimised algorithm’s implementation offers a gain of x5.05, x24.96, and x36.68 compared with the native version using MATLAB and the optimised version using C/C++, OpenMP, and OpenCL tool, respectively, in some functional blocks. © 2025 Informa UK Limited, trading as Taylor & Francis Group.

关键词： Photoplethysmography

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Mobile mini-fluorimeter for antibiotic aptasensing based on surface-plasmonic effect of burlike nanogolds enhanced by digitized imaging diagnosis

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Chinese Chemical Letters 2024年第5期35卷 418-422页

作者： Tiantian Man Fulin Zhu Yaqi Huang Yuhao Piao Yan Su Shengyuan Deng Ying Wan School of Mechanical Engineering Nanjing University of Science and TechnologyNanjing 210094China Key Laboratory of Metabolic Engineering and Biosynthesis Technology Ministry of Industry and Information TechnologySchool of Environmental and Biological EngineeringNanjing University of Science and TechnologyNanjing 210094China

Antibiotic abuse now poses a grave threat to global ecology and bestirs public concerns about the residue issue in daily *** traceability measurements along supply chain or logistic circulation have become increasingly essential given the labile nature of diverse synthetic residuals on *** an attempt to answer this urgency,here a miniaturized fluorometric aptasensor prototype was contrived that catered to the point-of-care screening norm for two typical additives:chloramphenicol and *** key target-indicating module worked in vitro based on the competitive binding-induced fluorescence recovery of fluorescein-labeled aptamers,which were photobleached beforehand in the format of double helix on burlike nanogold ***“prickly”geometry of the latter not just enriched the capture probes at preferentially substrate-accessible spires;but also contributed to a tip-enhanced surface plasmon effect,sensitizing the signal-on during the duplex dissociation even at nanomolar threshold of the *** the other hand,to encompass a full portable,a set of optical devices were mounted within a 3D-printed cartridge(adaptor)to converge the light beam and route it towards the detector,for which the smartphone camera came up in handy with a home-developed App for calibrating the emissive *** by the high-dynamic-range compression,an imaging diagnostic algorithm was built in to grid and digitize each slide in the album for augmented detection ***,a novel bio-to-silico integration was invented that capable of in situ rapid reporting on the antibiotic presence with high sensitivity and *** field practices in spiked milk on sales proved the precision and rudimentary feasibility of the well-assembled model of appliance,thus holding nice prospects in nonexpert(e.g.,family and local community)utilities for foodborne antibiotic identification.

关键词： Chloramphenicol and enrofloxacin Aptasensor Gold nanoburs Smartphone fluorimetric suite Digitized image postprocessing

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Reconfiguration of vertex-disjoint shortest paths on graphs

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Journal of Graph Algorithms and Applications 2024年第3期28卷 87-101页

作者： Saito, Rin Eto, Hiroshi Ito, Takehiro Uehara, Ryuhei Graduate School of Information Sciences Tohoku University Sendai Japan School of Computer Science and Systems Engineering Kyushu Institute of Technology Iizuka Japan School of Information Science Japan Advanced Institute of Science and Technology Nomi Japan

We introduce and study reconfiguration problems for (internally) vertex-disjoint shortest paths: Given two tuples of internally vertex-disjoint shortest paths for fixed terminal pairs in an unweighted graph, we are asked to determine whether one tuple can be transformed into the other by exchanging a single vertex of one shortest path in the tuple at a time, so that all intermediate results remain tuples of internally vertex-disjoint shortest paths. We also study the shortest variant of the problem, that is, we wish to minimize the number of vertex-exchange steps required for such a transformation, if exists. These problems generalize the well-studied Shortest Path Reconfiguration problem. In this paper, we analyze the complexity of these problems from the viewpoint of graph classes, and give some interesting contrast. © 2024, Brown University. All rights reserved.

关键词： Graph theory

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Traffic sign recognition model based on scale sequence features and high-order spatial interactions

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Neural Computing and Applications 2025年第5期37卷 3605-3620页

作者： Zhang, Gan Wang, Yafei Li, Wenju Fu, Xianping School of Information Science and Technology Dalian Maritime University Dalian116026 China School of Computer Science and Information Engineering Shanghai Institute of Technology Shanghai201418 China Pengcheng Laboratory Shenzhen518055 China

Traffic sign recognition is an integral part of driver assistance systems play a crucial role in enhancing road safety. Due to a large number of challenging targets, such as occlusion, distortion, and small targets in actual scenes, existing methods still have bottlenecks in the accuracy of detection and recognition. Therefore, this paper proposes a real-time traffic sign recognition model based on scale sequence features (SSFs) and high-order spatial interactions (HOSIs) on the basis of YOLOv5. This model extracted scale-invariant SSF using a high-dimensional convolution on the underlying feature map to improve the detection effect of multi-scale targets. At the same time, recursive gated convolution modules are integrated into the feature pyramid network, expanding the interactions to arbitrary order and providing richer feature information for high-order convolutions. In addition, a cross-stage partial (CSP) structure is incorporated into the spatial pooling pyramid, which improves the structure’s performance without introducing excessive computational complexity. The experimental results show that the proposed model achieves 95.5% and 99.92% of mAP on Tsinghua–Tencent 100K (TT100K) and German Traffic Sign Recognition Benchmark (GTSRB), respectively, which surpass the performance of the most advanced model and meets the requirements of real-time detection. © The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature 2024.

关键词： Convolution

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AR assistance for efficient dynamic target search

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Computational Visual Media 2023年第1期9卷 177-194页

作者： Zixiang Zhao Jian Wu Lili Wang State Key Laboratory of Virtual Reality Technology and Systems School of Computer Science and EngineeringBeihang UniversityBeijingChina

When searching for a dynamic target in an unknown real world scene,search efficiency is greatly reduced if users lack information about the spatial structure of the *** target search studies,especially in robotics,focus on determining either the shortest path when the target’s position is known,or a strategy to find the target as quickly as possible when the target’s position is ***,the target’s position is often known intermittently in the real world,e.g.,in the case of using surveillance *** goal is to help user find a dynamic target efficiently in the real world when the target’s position is intermittently *** order to achieve this purpose,we have designed an AR guidance assistance system to provide optimal current directional guidance to users,based on searching a prediction *** assume that a certain number of depth cameras are fixed in a real scene to obtain dynamic target’s *** system automatically analyzes all possible meetings between the user and the target,and generates optimal directional guidance to help the user catch up with the target.A user study was used to evaluate our method,and its results showed that compared to free search and a top-view method,our method significantly improves target search efficiency.

关键词： augmented reality(AR) search guidance

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Surface plasmon-coupled radiative heat transfer between graphene-covered magnetic Weyl semimetals

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science China(Technological sciences) 2024年第11期67卷 3405-3412页

作者： SONG JinLin YAO XinJie JIN Lin CHEN Lei ZHAO HaiLong CHENG Qiang School of Electrical and Information Engineering Wuhan Institute of TechnologyWuhan 430205China State Key Laboratory of Coal Combustion School of Energy and Power EngineeringHuazhong University of Science and TechnologyWuhan 430074China

Weyl semimetals(WSMs)have recently attracted considerable research attention because of their remarkable optical and electrical *** this study,we investigate the near-field radiative heat transfer(NFRHT)between graphene-covered Weyl slabs,particularly focusing on the supported coupled surface plasmon polaritons(SPPs).Unlike bare Weyl slabs where the epsilon-near-zero(ENZ)effect contributes the most to the NFRHT,adding a monolayer graphene sheet yields coupled SPPs,i.e.,the coupling of graphene SPPs(GSPPs)and Weyl SPPs(WSPPs),which dominates the *** graphene sheet greatly suppresses the ENZ effect by compressing the parallel wavevector,thereby enabling the heat transfer coefficient(HTC)to be significantly ***,for the graphene-covered magnetic Weyl slab configuration,an increase in the number of Weyl nodes suppresses the SPP coupling and ENZ effect,thereby weakening the NFRHT with a regulation ratio of 4.4 whereas an increase in the Fermi level slightly influences the *** typical heterostructures are also proposed for comparison,and results show that a mono-cell structure has the largest total *** findings will facilitate the understanding of surface plasmon-coupled radiative heat transfer and enable opportunities in energy harvesting and thermal management at the nanoscale based on WSM-based systems.

关键词： near-field radiative heat transfer Weyl semimetal surface plasmon polariton epsilon-near-zero graphene

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VLM-EMO: Context-Aware Emotion Classification with CLIP 5

VLM-EMO: Context-Aware Emotion Classification with CLIP

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5th International Seminar on Artificial Intelligence, Networking and information technology, AINIT 2024

作者： Yao, Yanyin Mei, Xue Xu, Jianping Sun, Zhichuang Zeng, Cheng Chen, Yuming Nanjing Tech University College of Electrical Engineering and Control Science Nanjing China Science and Technology On Information Systems Engineering Laboratory Nanjing China

ISBN: (纸本)9798350385557

Emotion recognition is a pivotal component in various sectors, including medical care, education, service industries, and public safety, due to its potential to enhance interaction and understanding within these contexts. Historically, traditional methods of emotion recognition have primarily concentrated on analyzing facial expressions. While effective to a degree, this approach offers restricted capacity for encoding context, and unable to capture the breadth and depth of emotional responses. In this paper, we proposed the VLM-EMO Model, a novel approach that enhances the capabilities of VLM (Visual Language Model) in the domain of emotion recognition. While VLM itself is a powerful tool for understanding the correlation between images and text, the VLM-EMO Model fine-tunes this ability to focus more intricately on emotional aspects within visual data. This is achieved by integrating emotional intelligence into the model's architecture, allowing it to discern subtle emotional cues and contexts within images. © 2024 IEEE.

关键词： Emotion Recognition

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Spatial coupling coordination evaluation between land use efficiency and urbanization in the Chang-Zhu-Tan urban agglomeration, China

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Advances in Space Research 2025年第12期75卷 8642-8656页

作者： Zheng, Qiong Zhu, Huangteng Xia, Qing Guo, Zixiao Zhu, Lihong Engineering Laboratory of Spatial Information Technology of Highway Geological Disaster Early Warning in Hunan Province Changsha University of Science and Technology Changsha China

Ensuring that land use efficiency and urbanization are in harmony has emerged as a critical concern requiring immediate attention to achieve sustainable urbanization in China. Taking the Chang-Zhu-Tan urban agglomeration (CZTUA) as an example, this study establishes an evaluation index system of land use efficiency and urbanization using multi-source remote sensing data in 2020 and analyzes the coupling coordination degree (CCD) between these factors. Furthermore, the standardization methods and exploratory spatial data analysis method are combined to investigate the spatial correlation of the CCD among land use efficiency and urbanization. The study shows that: (1) In CZTUA, there is a positive correlation between land use efficiency and urbanization and this promotes urbanization. (2) The overall coupling degree in the CZTUA is in the running-in level and most districts are at the elementary or middle rank coordinated levels. (3) The spatial clustering characteristics have the "center-periphery" pattern, with the further away from the core city, the lower the level of coupling coordination becomes. (4) From the perspective of geographical association, the High-High agglomeration, mainly located in Changsha City, showed higher development levels compared to surrounding areas. Development gradually diminished as one moves outward, forming a Low-High agglomeration. Low-Low agglomeration was represented by You, Chaling and Yanling districts. The methodology used in this study is relevant for promoting urbanization and improving land use efficiency in Chinese city clusters. © 2025 COSPAR

关键词： Efficiency

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