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arXiv 2025年

作者： Yang, Nai Wang, Yijie Wu, Fan Wei, Zhiwei School of Geography and Information Engineering China University of Geosciences Hubei Wuhan China School of Geographic Sciences Hunan Normal University Hunan Changsha China Hunan Key Laboratory of geospatial big data mining and application Hunan Normal University Hunan Changsha China

Choropleth maps, which utilize color schemes to visualize spatial patterns and trends, are simple yet effective tools for geographic data analysis. As such, color scheme design is a critical aspect of choropleth map creation. The traditional coloring methods offered by GIS tools such as ArcGIS and QGIS are not user-friendly for nonprofessionals. On the one hand, these tools provide numerous color schemes, making it hard to decide which one best matches the theme. On the other hand, it is difficult to fulfill some ambiguous and personalized coloring needs of users, such as requests for ‘summer-like’ map colors. To address these shortcomings, we develop a novel system that leverages a large language model and map color design principles to generate contextually relevant and user-aligned choropleth map color schemes. The system follows a three-stage process: data processing, which provides an overview of the data and classifies the data into meaningful classes;Color Concept Design, where the color theme and color mode are conceptualized based on data characteristics and user intentions;and Color Scheme Design, where specific colors are assigned to classes based on generated color theme, color mode, and user requirements. Our system incorporates an interactive interface, providing necessary visualization for choropleth map color design and allowing users to customize and refine color choices flexibly. Through user studies and evaluations, the system demonstrates acceptable usability, accuracy, and flexibility, with users highlighting the tool’s efficiency and ease of use. Copyright © 2025, The Authors. All rights reserved.

关键词： Modeling languages

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Adaptive disentangled target representation for unsupervised domain adaptation in remote sensing segmentation

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Engineering applications of Artificial Intelligence 2025年 156卷

作者： Lu, Runuo Dong, Shoubin Jia, Jianxin Wang, Xusheng Liu, Kai Chen, Jinsong Guo, Shanxin Zheng, Xiaorou Guangdong Provincial Key Laboratory of Multimodal Big Data Intelligent Analysis School of Computer Science and Engineering South China University of Technology Guangzhou510641 China Department of Photogrammetry and Remote Sensing Finnish Geospatial Research Institute EspooFI-02150 Finland Center for Geo-Spatial Information Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen518055 China Shenzhen Engineering Laboratory of Ocean Environmental Big Data Analysis and Application Shenzhen518055 China

Due to the significant differences between the source and target domains, semantic segmentation models for remote sensing images trained on the source domain often struggle to generalize effectively to new target domains, leading to performance degradation. Most solutions disentangle features into domain-invariant features shared by both domains and domain-specific features unique to each domain, relying primarily on the domain-invariant features for model construction and inference. However, during this process, critical domain-specific features as essential information are often discarded as noise, leading to a reduction in segmentation accuracy. To address these issues, this study proposes an unsupervised domain adaptation, called ChameleonRS. ChameleonRS separates the domain-invariant features and the domain-specific features by disentanglement learning, and introduces a multi-level feature alignment module to enhance the representation of domain-invariant features. More importantly, it aligns predictions based on domain-invariant features with those based on fused invariant and specific features using contrastive learning, effectively capturing target-specific features. This study explores two cross-domain semantic segmentation tasks: (I) Geographic location variation. (II) Geographic location and imaging mode variation. Results show that under setting (I), ChameleonRS outperforms the state-of-the-art method by 4.79% in Intersection over Union (IoU) and 6.51% in the F1 score. Under setting (II), it achieves improvements of 4.46% and 4.82% in IoU and F1 score. Results demonstrate the superiority and adaptability of ChameleonRS under varying geographical and imaging conditions, effectively mitigating the generalization issues caused by distribution differences, and thereby promoting the development and application of remote sensing technologies in practical scenarios. © 2025 Elsevier Ltd

关键词： Semantic Segmentation

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Evaluating the performance of gaze interaction for map target selection

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The American Cartographer 2025年第1期52卷

作者： Changbo Zhang Hua Liao Jinhua Meng a School of Geographic Sciences Hunan Normal University Changsha Chinab Hunan Key Laboratory of Geospatial Big Data Mining and Application Hunan Normal University Changsha China

ABSTRACTThe eye tracking approach has the potential to facilitate more tailored and intelligent geoapplication interactions. There is a lack of knowledge regarding how gaze interaction influences user performance (accuracy and efficiency), visual behavior, and cognitive workload in real-world map-reading settings. In this study, we adopted a low-cost eye tracker and dwell time method to implement a fundamental gaze-based map interaction: target (point, line and area) selection. We administered a comparative experiment in which 36 participants were asked to perform a series of map target selection tasks using gaze-based and mouse interactions. The results demonstrated that gaze-based map interaction is comparable to mouse in terms of overall efficiency. By evaluating the visual behavior of the participants, we found that mouse interaction exhibited heightened fixation frequency and larger saccade amplitude than gaze interaction. Although gaze-based map interaction frustrated participants more often, the overall cognitive workload was no different from that of mouse interaction. These differences between interaction modes were largely affected by task types but rarely dependent on target shapes or positions. Moreover, participants evaluated gaze interaction higher in terms of attractiveness, stimulation and novelty. These results are beneficial for map interaction researchers and developers.

关键词： Gaze-based map interaction human-computer interaction (HCI) eye tracking visual behavior cognitive workload

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The unforgettable past: The long-term impact of war on corporate tax avoidance in modern China

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Research in International Business and Finance 2025年 77卷

作者： Tan, Xue Yin, Jingwei Lin, Ning Hunan Key Laboratory of Macroeconomic Big Data Mining and Its Application School of Business Hunan Normal University Hunan Changsha 410081 China Business School Central South University Hunan Changsha 410083 China Economics and Management School of Wuhan University Wuhan University Hubei Wuhan China

Prior literature related to war effects usually has a short time horizon between the war event and its outcomes. However, little is known about whether the collective war memories can be transmitted across generations, and then impact later generations' decisions in a long-lasting way. Using a sample of 3244 A-share listed companies in Shanghai and Shenzhen from 2013 to 2019, the study finds that firms hiring CEOs originated from regions that were intensively affected by the war during 1931–1945 (i.e., the Second Sino-Japanese War) exhibit higher level of corporate tax avoidance. Moreover, the positive impact of war on corporate tax avoidance is more pronounced for CEOs who are the first generation born in the post-war period. Our mechanism tests show that firms hiring war-affected CEOs are more likely to make philanthropic giving, and have higher corporate social responsibility ratings, but not hold more risk assets, revealing that war-affected CEOs engaging in greater tax avoidance is due to their prosocial preference rather than risk preference. Our cross-sectional analyses reveal that the positive impact of war on corporate tax avoidance is stronger when CEOs are male, less educated, without political connection, with poor experiences and firms face financing constraints, but weaker when firms are under stricter tax enforcement. Above conclusions are robust to a set of robustness checks and still stand after confronting the endogeneity issue. © 2025

关键词： CEOs' characteristics Corporate tax avoidance Prosocial preference Risk preference War

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Spatial matching and flow in supply and demand of water provision services: A case study in Xiangjiang River Basin

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Journal of Mountain Science 2022年第1期19卷 228-240页

作者： DENG Chu-xiong ZHU Da-mei LIU Yao-jun LI Zhong-wu College of Resources and Environmental Sciences Hunan Normal UniversityChangsha 410081China Hunan Key Laboratory of Geospatial Big Data Mining and Application Changsha 410081China College of Environmental Science and Engineering Hunan UniversityChangsha 410082China

Global climate change and increased human consumption have aggravated the uneven spatiotemporal distribution of watershed water resources, affecting the water provision supply and demand state. However, this problem has often been ignored. The present study used the Xiangjiang River basin(XRB) as the study area, and the Integrated Valuation of Ecosystem Services and Trade-offs(InVEST) model, demand quantification model,supply–demand ratio, and water flow formula were applied to explore the spatial heterogeneity, flow, and equilibrium between water supply and demand. The results demonstrated significant spatial heterogeneity in the upstream, midstream, and downstream *** areas of water shortage were mainly located the downstream of the Changsha–Zhuzhou–Xiangtan urban agglomeration, and the Hengyang basin was the most scarcity area. Affected by terrain gradients and human needs, water flow varied from-16.33 × 10^(8) m^(3) to 13.69 × 10^(8) m^(3)from the upstream to the downstream area, which provided a possibility to reduce spatial heterogeneity. In the future, measures such as strengthening water resource system control,sponge city construction, and dynamic monitoring technology should be taken to balance the supply and demand of water in different river sections of the basin. This study can provide references for regulating water resources allocation in different reaches of the basin.

关键词： Water provision services Supply and demand Spatiotemporal dislocation Water flow Water management and saving policy Xiangjiang River basin

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Gaining water bodies by climate change benefits water crisis mitigation in central Asia

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Science Bulletin 2025年

作者： Su, Yanan Chen, Shengqian Sui, Yijie Li, Xin Xu, Jinhao Che, Xianghong Xie, Tingting Chen, Jianhui Sheng, Yongwei Feng, Min Chen, Fahu State Key Laboratory of Tibetan Plateau Earth System Environment and Resources Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing100101 China College of Resources and Environment University of Chinese Academy of Sciences Beijing100049 China Research Center of Geospatial Big Data Application Chinese Academy of Surveying and Mapping Beijing100830 China College of Water Resources and Architectural Engineering Tarim University Alar843300 China Key Laboratory of Western China's Environmental Systems Ministry of Education College of Earth and Environmental Sciences Lanzhou University Lanzhou730000 China Department of Geography University of California Los AngelesCA90095 United States Academy of Plateau Science and Sustainability Qinghai Normal University Xining810016 China

Central Asia (CA) faces a severe water crisis exemplified by the shrinking Aral Sea. However, little is known about the entire region, particularly the numerous small water bodies that are vulnerable to climate change yet vital for regional sustainability. We examined water bodies as small as 0.0045 km2 across CA from 1992 to 2020, identifying 66,215 water bodies in 2020, 82.2% of which were previously unstudied. In contrast to the well-documented decline of the Aral Sea, other water bodies have expanded by 10.7% (8714.3 km2), with a net gain of 15,831 lakes since 1992. These findings challenge the perception of a drying CA and provide evidence of a warm-wet climate trend, which is redistributing water resources and creating opportunities for transforming water management to address the long-standing water crisis in CA. © 2025 Science China Press

关键词： Central Asia Climate Change Small Water Bodies Water Crisis Water Resource Management

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Soliton molecules for combined mKdV-type bilinear equation

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Communications in Theoretical Physics 2023年第10期75卷 1-9页

作者： Zhang-Xuan Zhao Lu-Wei Zhang Wei Yang Xue-Ping Cheng School of Information Engineering Zhejiang Ocean UniversityZhoushan 316022China Key Laboratory of Oceanographic Big Data Mining&Application of Zhejiang Province Zhoushan 316022China

Starting from the multi-soliton solutions obtained by the Hirota bilinear method,the soli ton molecule structures for the combined mKdV-type bilinear equation(Dt+∑n=1NαnDx2n+1)f*·f=0 are investigated using the velocity resonance *** two-soliton molecules of the mKdV-35 equation and the three-soliton molecules of the mKdV-357 equation are specifically demonstrated in this *** particular selections of the involved arbitrary parameters,especially the wave numbers,it is confirmed that,besides the usual multi-bright soliton molecules,the multi-dark soliton molecules and the mixed multibright-dark soliton molecules can also be *** addition,we discuss the existence of the multi-soliton molecules for the combined mKdV-type bilinear equation with more higher order nonlinear terms and *** results demonstrate that when N≥4,the combined mKdVtype bilinear equation no longer admits soliton molecules comprising more than four solitons.

关键词： soliton molecule combined mKdV-type bilinear equation Hirota bilinear method velocity resonance mechanism

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Building national eco-cultural protection areas and the Xiangxi practice in Hunan Province

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Journal of Geographical Sciences 2020年第12期30卷 2076-2092页

作者： LIU Chunla WU Liping XU Mei ZENG Fanchao JIAO Lipeng College of Resources and Environment Sciences Hunan Normal UniversityChangsha 410081China Key Laboratory of Geospatial Big Data Mining and Application Hunan ProvinceChangsha 410081China College of Tourism Central South University of Forestry and TechnologyChangsha 410004China

Since 2007,the Chinese government has initiated the building of national eco-cultural protection areas(NECPAs),thereby embarking on a significant transformation of the model of intangible cultural heritage(IC H)protection in *** understand the origin and outputs of this policy,this paper demonstrates the context of China's *** proposes a conceptual NECPA framework that mainly features regional overall ICH *** is followed by an examination of the case of Xiangxi in Western Hunan as a pilot zone for China’s eco-cultural *** has performed much related work to promote NECPAs and made great progress in regional overall ICH *** insight suggests that there are benefits and costs associated with promotion of China's NECPAs and regional overall ICH *** the advantages of institutional innovation,the unexpected side effects actually undermine the success of plan implementation.

关键词： national eco-cultural protection area intangible cultural heritage regional overall protection Xiangxi China

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Decoherence-and Dimerization-assisted Energy Transport in Protomer of Light-Harvesting Complexes

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Communications in Theoretical Physics 2016年第1期65卷 114-120页

作者：周运清李有泉 Department of Physics and Key Laboratory of Oceanographic Big Data Mining & Application of Zhejiang Province Zhejiang Ocean University Zhejiang Institute of Modern Physics and Department of Physics Zhejiang University

We have investigated the dynamics of a protomer coupled to two different decoherent environments,each in a configuration called the spin star *** the quantum mechanics method,in different situations,we obtain the analytical expressions for the transition probability in the protomer *** thermal equilibrium,there exist well-defined ranges of parameters for which decoherent interaction between the protomer and the environment assists energy transfer in the protomer system,while in pure quantum mechanics states,the decoherent interaction assists energy transfer for an eigenstate but against energy transfer for quantum mechanics *** particular,we also find that the dimerization of two bacteriochlorophylls in protomer can always assist energy transfer in certain parameter range,and in the appropriate spin bath energy,the efficiency of energy transport is sensitively depended on the temperature of environments.

关键词： clecoherence assisted energy transport light-harvesting complexes protomer

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Design and Implementation of Martime 5G Communication System Based on Software Defined Radio and Open Air Interface

Design and Implementation of Martime 5G Communication System...

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2023 IEEE International Conference on Unmanned Systems, ICUS 2023

作者： Wang, Yushuo Yang, Kun Ding, Jianjun Chen, Xuyang Li, Qiang Peng, Tong Big Data Mining & Application Zhejiang Ocean University Key Laboratory of Oceanographic Zhoushan China

ISBN: (纸本)9798350316308

This article proposes an innovative maritime 5G communication system based on Software Defined Radio (SDR) and OpenAirInterface (OAI),which shows advantages of high scalability and low cost. By implementing with recent research on OAI-based software base station technology, we established a core network, 5G software base station (gNB), user terminal (UE), and uplink/downlink systems to test the stability and transmission rate of the entire platform based on the testing software such as Iperf. We obtained the communication performance indicators of the equipment in marine environments and compared them with the test results in terrestrial environments, which fills the gap in the accessible test solution for 5G communication systems in marine environments. The results show that the proposed test solution can be used for reliable and accurate performance eveluation of 5G communication systems in marine environments with the feature of easy-implmentation and easy-scalability. Future research can be exploited by increasing the complexity and diversity. © 2023 IEEE.

关键词： Radio

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