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基于Global Search算法优化近红外测距光学系统
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作者 冯浩 王丽娇 +6 位作者 莫维全 袁必诚 杨志颖 张楠 王开金 刘琨 孙昊 《应用光学》 北大核心 2026年第2期243-252,共10页
为实现户外红外测距系统在有限封闭空间内的精准探测,在不影响探测结果的基础上压缩光学系统体积,采用二维双平面反射系统,设计了一套光学总长为4 m、最大反射镜为12.8 cm的折返式光路。该折返式光路将n片平面反射镜分为2×(n+1)段... 为实现户外红外测距系统在有限封闭空间内的精准探测,在不影响探测结果的基础上压缩光学系统体积,采用二维双平面反射系统,设计了一套光学总长为4 m、最大反射镜为12.8 cm的折返式光路。该折返式光路将n片平面反射镜分为2×(n+1)段光程,利用全局搜索算法(Global Search)对反射镜数量和光学直径进行优化,实现每条探测光线都能照射到探测物体并成功折返回探测器;满足探测要求后,利用信号波原理进行理论验证分析,避免光程折损引起探测误差;最后,通过分析系统在封闭空间内杂散光线的仿真结果,对系统进行杂散光抑制,对实验与原路径的探测结果进行对比,验证了设计光路的正确性和准确性。 展开更多
关键词 光路设计 global Search算法 杂散光 信号波
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Global-local feature optimization based RGB-IR fusion object detection on drone view 被引量:1
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作者 Zhaodong CHEN Hongbing JI Yongquan ZHANG 《Chinese Journal of Aeronautics》 2026年第1期436-453,共18页
Visible and infrared(RGB-IR)fusion object detection plays an important role in security,disaster relief,etc.In recent years,deep-learning-based RGB-IR fusion detection methods have been developing rapidly,but still st... Visible and infrared(RGB-IR)fusion object detection plays an important role in security,disaster relief,etc.In recent years,deep-learning-based RGB-IR fusion detection methods have been developing rapidly,but still struggle to deal with the complex and changing scenarios captured by drones,mainly due to two reasons:(A)RGB-IR fusion detectors are susceptible to inferior inputs that degrade performance and stability.(B)RGB-IR fusion detectors are susceptible to redundant features that reduce accuracy and efficiency.In this paper,an innovative RGB-IR fusion detection framework based on global-local feature optimization,named GLFDet,is proposed to improve the detection performance and efficiency of drone-captured objects.The key components of GLFDet include a Global Feature Optimization(GFO)module,a Local Feature Optimization(LFO)module and a Channel Separation Fusion(CSF)module.Specifically,GFO calculates the information content of the input image from the frequency domain and optimizes the features holistically.Then,LFO dynamically selects high-value features and filters out low-value features before fusion,which significantly improves the efficiency of fusion.Finally,CSF fuses the RGB and IR features across the corresponding channels,which avoids the rearrangement of the channel relationships and enhances the model stability.Extensive experimental results show that the proposed method achieves the best performance on three popular RGB-IR datasets Drone Vehicle,VEDAI,and LLVIP.In addition,GLFDet is more lightweight than other comparable models,making it more appealing to edge devices such as drones.The code is available at https://github.com/lao chen330/GLFDet. 展开更多
关键词 Object detection Deep learning RGB-IR fusion DRONES global feature Local feature
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Global Existence and Blow-up of Solutions for Fourth-order Parabolic Equation with p(x)-Laplacian and Variable Exponents
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作者 YANG Chunxiao YU Lifei DUAN Chenyan 《数学进展》 北大核心 2026年第1期221-239,共19页
In this paper,we consider the fourth-order parabolic equation with p(x)Laplacian and variable exponent source ut+∆^(2)u−div(|■u|^(p(x)−2■u))=|u|^(q(x))−1u.By applying potential well method,we obtain global existence... In this paper,we consider the fourth-order parabolic equation with p(x)Laplacian and variable exponent source ut+∆^(2)u−div(|■u|^(p(x)−2■u))=|u|^(q(x))−1u.By applying potential well method,we obtain global existence,asymptotic behavior and blow-up of solutions with initial energy J(u_(0))≤d.Moreover,we estimate the upper bound of the blow-up time for J(u_(0))≤0. 展开更多
关键词 fourth-order parabolic equation variable exponent source global existence asymptotic behavior BLOW-UP
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Semantic Causality Evaluation of Correlation Analysis Utilizing Large Language Models
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作者 Adam Dudáš 《Computers, Materials & Continua》 2026年第5期2246-2269,共24页
It is known that correlation does not imply causality.Some relationships identified in the analysis of data are coincidental or unknown,and some are produced by real-world causality of the situation,which is problemat... It is known that correlation does not imply causality.Some relationships identified in the analysis of data are coincidental or unknown,and some are produced by real-world causality of the situation,which is problematic,since there is a need to differentiate between these two scenarios.Until recently,the proper−semantic−causality of the relationship could have been determined only by human experts from the area of expertise of the studied data.This has changed with the advance of large language models,which are often utilized as surrogates for such human experts,making the process automated and readily available to all data analysts.This motivates the main objective of this work,which is to introduce the design and implementation of a large language model-based semantic causality evaluator based on correlation analysis,together with its visual analysis model called Causal heatmap.After the implementation itself,the model is evaluated from the point of view of the quality of the visual model,from the point of view of the quality of causal evaluation based on large language models,and from the point of view of comparative analysis,while the results reached in the study highlight the usability of large language models in the task and the potential of the proposed approach in the analysis of unknown datasets.The results of the experimental evaluation demonstrate the usefulness of the Causal heatmap method,supported by the evident highlighting of interesting relationships,while suppressing irrelevant ones. 展开更多
关键词 correlation CAUSALITY correlation analysis large language models VISUALIZATION
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China's Global Governance Initiative Illuminates the Path toward Good Climate Governance
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作者 Zhao Bin Zhang Yating Wang Nan 《Contemporary International Relations》 2026年第1期20-40,共21页
The Global Governance Initiative(GGI)is another important public good that China has provided for the international community,following the Global Development Initiative,the Global Security Initiative,and the Global C... The Global Governance Initiative(GGI)is another important public good that China has provided for the international community,following the Global Development Initiative,the Global Security Initiative,and the Global Civilization Initiative.As a sub-field of global governance,global climate governance has hitherto progressed slowly,exhibiting growing deficits in discourse,institutions,and actions.The governance paradigm is in desperate need of revamping,especially under the guidance of an innovative initiative.At the conceptual level,the GGI has gone beyond the Western governance discourse by outlining the institutional starting point,foundations of legitimacy,action orientations,ultimate goals,and practical support for good global climate governance through its five core concepts.At the practical level,the spillover effects of China's achievements in climate governance and the collective rise of the Global South have created favorable conditions,domestically and internationally,for the GGI to lead the way forward toward good global climate governance.However,the fact that the international political and economic order remains unjust and inequitable indicates that this will inevitably be a long-term process replete with rivalries in the pursuit of breakthroughs. 展开更多
关键词 global climate governance global climate politics global Governance Initiative good governance
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Some Thoughts on Promoting Global Governance in the Context of Decentralization
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作者 Jia Qingguo 《Contemporary International Relations》 2026年第1期4-14,共11页
In recent years, the overall strength of Western developed countries, led by the United States, has declined relatively, resulting in a trend of decentralization. This has posed severe challenges to the traditional gl... In recent years, the overall strength of Western developed countries, led by the United States, has declined relatively, resulting in a trend of decentralization. This has posed severe challenges to the traditional global governance system with regard to trade, security, and multilateral cooperation. However, this trend also provides a historical opportunity to transform the global governance system into one that is more inclusive and equitable. This can be seen in the reconstruction of value priorities, the adjustment of governance focus, the reform of governance mechanisms, and the promotion of new mechanisms. Only by adhering to openness and inclusiveness and balancing rights and responsibilities can we build a future governance order that conforms to the common interests of all humanity. 展开更多
关键词 DECENTRALIZATION global governance global Governance Initiative initiative diplomacy
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The Global South’s Opportunity:An Arab Reading of the Global Governance Initiative
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作者 Adham Sayed 《Contemporary World》 2026年第1期23-27,共5页
Multiple diagnoses,from both East and West,converge on the view that we are living through a turbulent juncture reminiscent of the inflection points that preceded major wars,not as a claim of historical symmetry,but a... Multiple diagnoses,from both East and West,converge on the view that we are living through a turbulent juncture reminiscent of the inflection points that preceded major wars,not as a claim of historical symmetry,but as an indication of the depth of the present crisis.What concerns us here is to affirm the essence of that assessment:we are indeed facing an unprecedented crisis that compels a rethinking of the entire existing international order,as U.S. 展开更多
关键词 turbulent juncture global south international order Arab perspective global governance rethinking CRISIS unprecedented crisis
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Correlation Analysis of Anatomical and Pathological Characteristics of the Respiratory- Circulatory System
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作者 Min Li 《Journal of Clinical and Nursing Research》 2026年第2期155-161,共7页
The respiratory-circulatory system, including organs such as the nose, pharynx, larynx, trachea, bronchi, and heart, is an organic community responsible for ventilation and gas exchange. The integrity of its anatomica... The respiratory-circulatory system, including organs such as the nose, pharynx, larynx, trachea, bronchi, and heart, is an organic community responsible for ventilation and gas exchange. The integrity of its anatomical structure directly affects the evolution of pathological processes, and the analysis of their correlation is a core entry point for clinical disease diagnosis, treatment, and mechanism research. Based on this, this paper mainly explores the correlation between the anatomical and pathological characteristics of the respiratory-circulatory system, aiming to provide anatomical and pathological theoretical support for clinical accurate diagnosis, targeted therapy, and prognosis evaluation. 展开更多
关键词 Respiratory-circulatory system PATHOLOGY ANATOMY CHARACTERISTICS correlation
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“Two Sessions”:China’s Commitment to Global Governance
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作者 LIU QIAN 《China Today》 2026年第4期42-44,共3页
China will continue to promote world peace and stability during reconstruction of the international order.AT present,the international order is being transformed at an unprecedented rate,and the global governance syst... China will continue to promote world peace and stability during reconstruction of the international order.AT present,the international order is being transformed at an unprecedented rate,and the global governance system is facing profound adjustments.Deficits in security,development,and technology are increasingly intertwined,presenting the international community with a critical choice of direction. 展开更多
关键词 technology deficit critical choice world peace international order global governance system global governance development deficit security deficit
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Impacts of 1.5℃ and 2.0℃ Global Warming on the Onset,Cessation,and Length of the Rainy Season in Global Land Monsoon Regions
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作者 Thierry N.TAGUELA Ibraheem RAJI +4 位作者 Akintomide A.AKINSANOLA Priyanshi SINGHAI Oluwafemi E.ADEYERI Caroline M.WAINWRIGHT Rondrotiana BARIMALALA 《Advances in Atmospheric Sciences》 2026年第1期87-102,共16页
The onset,cessation,and length of the rainy season are crucial for global water resources,agricultural practices,and food security.However,the response of precipitation seasonality to global warming remains uncertain.... The onset,cessation,and length of the rainy season are crucial for global water resources,agricultural practices,and food security.However,the response of precipitation seasonality to global warming remains uncertain.In this study,we analyze how global warming levels(GWLs)of 1.5℃ and 2℃ could affect the timing of rainfall onset(RODs),rainfall cessation(RCDs),and the overall duration of the rainy season(LRS)over global land monsoon(GLM)regions using simulations from CMIP6 under the SSP2-4.5 and SSP5-8.5 scenarios.With high model consensus,our results reveal that RODs are projected to occur later over Southern Africa,North Africa,and South America,but earlier over South Asia and Australia,in a warmer climate.The projected early RODs in Australia are more pronounced at the 2℃ GWL under SSP5-8.5.On the other hand,early RCDs are projected over South America and East Asia,while late RCDs are projected over North Africa,with high inter-model agreement.These changes are associated with a future decrease in LRS in most GLM regions.Additionally,we found that continuous warming over 1.5℃ will further reduce the length of the rainy season,especially over the South America,North Africa,and Southern Africa monsoon regions.The findings underscore the urgent need to mitigate global warming. 展开更多
关键词 rainfall onset rainfall cessation global land monsoon rainy season length CMIP6 projections global warming levels
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Towards a Cooperative Global Future——China’s Global Governance Initiative lays emphasis on concrete actions aimed at promoting peace and development rather than on symbolic declarations
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作者 BUSANI NGCAWENI 《ChinAfrica》 2026年第2期16-17,共2页
As we enter the year 2026,the international system continues to receive shocks from Donald Trump,arguably the 21st century’s most disruptive US leader.His return to the White House in 2025 coincided with the 80th ann... As we enter the year 2026,the international system continues to receive shocks from Donald Trump,arguably the 21st century’s most disruptive US leader.His return to the White House in 2025 coincided with the 80th anniversary of the defeat of fascism and the establishment of the United Nations,the multilateral platform that carried the world’s hope for peace,restraint and collective security.The coincidence was unsettling.A world order designed to limit power now confronts a moment in which power is exercised openly,transactionally and unapologetically. 展开更多
关键词 multilateral platform cooperative global future development Donald Trump united nationsthe PEACE Chinas global governance initiative symbolic declarations
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Multiple Measures to Systematically Advance the Global Governance Initiative
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作者 Lou Chunhao 《Contemporary International Relations》 2026年第1期15-19,共5页
On September 1,2025,Chinese President Xi Jinping solemnly proposed the Global Governance Initiative(GGI)at the“Shanghai Cooperation Organization Plus”meeting,answering a question posed by the times:what kind of glob... On September 1,2025,Chinese President Xi Jinping solemnly proposed the Global Governance Initiative(GGI)at the“Shanghai Cooperation Organization Plus”meeting,answering a question posed by the times:what kind of global governance system to build and how to reform and improve global governance.The GGI is committed to sovereign equality,the international rule of law,multilateralism,the people-centered approach,and real results,offering China's wisdom and solutions for building a more just and equitable global governance system.On the journey ahead,China will hold high the banner of a community with a shared future for humanity and advance the GGI through multiple measures,effectively strengthening and improving global governance. 展开更多
关键词 community with a shared future for humanity global governance global Governance Initiative
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A Study on the Correlation between Peer Caring Behavior and Empathy among Undergraduate Nursing Students
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作者 Fang Xu Juan Xiao +2 位作者 Xiaofang Hu Jianfeng Xu Shaoyan Yuan 《Journal of Clinical and Nursing Research》 2026年第2期343-349,共7页
Objective: To understand the current status of peer caring behavior and empathy among undergraduate nursing students and to explore the relationship between the two. Method: Using the convenience sampling method, a qu... Objective: To understand the current status of peer caring behavior and empathy among undergraduate nursing students and to explore the relationship between the two. Method: Using the convenience sampling method, a questionnaire survey was conducted among 292 nursing students from a medical college in Jiangxi Province, using the Peer Caring Behavior Scale and the Jefferson Scale of Empathy. Results: The score for peer caring behavior among undergraduate nursing students was 85.00 (78.00-92.00), and the score for empathy was 101.00 (92.00-110.00). A positive correlation was found between the two (r = 0.362, p < 0.05). Conclusion: The level of peer caring behavior among undergraduate nursing students is above average, while their empathy level is moderate, with a positive correlation between the two. This suggests that nursing educators should strengthen the development of peer caring behavior, which may help enhance the empathy of undergraduate nursing students. 展开更多
关键词 Undergraduate nursing students Peer caring behavior EMPATHY correlation
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Heimtextil 2026 sharpened its global market relevance by attracting more top-level decision-makers
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《China Textile》 2026年第1期46-48,共3页
During 13 to 16 January 2026,with 148 participating nations,rising global relevance and a marked increase in visitor quality,Heimtextil 2026 stood for stability and reliability in a volatile market environment.Once ag... During 13 to 16 January 2026,with 148 participating nations,rising global relevance and a marked increase in visitor quality,Heimtextil 2026 stood for stability and reliability in a volatile market environment.Once again,3,000 exhibitors from across the globe placed their trust in the industry’s central platform in Frankfurt,presenting current collections,materials and textile solutions for holistic interior design to approximately 47,000 buyers.Under the motto“Lead the Change”,Heimtextil brought evolving market dynamics,Artificial Intelligence(AI)and new business opportunities to life.The focus was on progressive design approaches,visionary talents,functional textiles and new hospitality concepts shaping the future of interior design.A tangible sense of confidence and a clear commitment to Heimtextil as a strong industry partner resonated throughout the exhibition halls. 展开更多
关键词 holistic interior design rising global relevance participating nations volatile market environment top level decision makers visitor quality reliability global market relevance
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Hotspots of disagreement across global urban land projections until 2100
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作者 Jasper van Vliet Hang Yang +9 位作者 Nathalie Benz Changxiu Cheng Jonathan Doelman Jing Gao Qingxu Huang Eric Koomen Xuecao Li Lu Niu Elizabeth A.Schrammeijer Yuyu Zhou 《Geography and Sustainability》 2026年第1期155-165,共11页
Projections of future urban land change are essential for a range of sustainability assessments,including those related to biodiversity loss,carbon emissions,and agricultural land conversion.However,to what extent and... Projections of future urban land change are essential for a range of sustainability assessments,including those related to biodiversity loss,carbon emissions,and agricultural land conversion.However,to what extent and where current projections agree or disagree remains unknown.Here,we systematically compare existing global projections that are consistent with the Shared Socioeconomic Pathways.We find that the total global urban land area is expected to increase by 112%between 2020 and 2100(averaged across all projections),with a coefficient of variation of 0.81.This variation is mostly caused by the selection of the underlying drivers that are included in the different models.Regionally,the highest average growth rates are found in sub-Saharan Africa(+679%to+730%),while this region also has the highest variation across projections(coefficient of variation ranging from 2.02 to 2.18).When ranking scenarios within a study from the highest to the lowest projected increase in urban land,rankings are relatively similar for regions in the Global North,but not for regions in the Global South.The large disagreement across projections can lead to high uncertainties in assessments of future urban land change impacts,which can undermine the effectiveness of long-term planning,policymaking,and resource management decisions. 展开更多
关键词 global Urban BUILT-UP Projections SSPs Model comparison
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Shipbuilding Sector Maintains Global Lead in 2025
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《ChinAfrica》 2026年第3期52-53,共2页
China’s shipbuilding industry maintained the world’s largest market share in terms of three major indicators for the 16th consecutive year in 2025,according to data released by the Ministry of Industry and Informati... China’s shipbuilding industry maintained the world’s largest market share in terms of three major indicators for the 16th consecutive year in 2025,according to data released by the Ministry of Industry and Information Technology on 1 February. 展开更多
关键词 global lead INDICATORS China SHIPBUILDING market share
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Cr-Substitution-Driven Correlation Enhancement and Hund's Metallicity in CsV_(3-x)Cr_(x)Sb_(5)
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作者 Guiyan Dong Zihao Huo +3 位作者 Wenxuan Chen Tiancheng Ma Jialiang Cai Defang Duan 《Chinese Physics Letters》 2026年第3期283-293,共11页
The Kagome metal CsV3Sb5 transitions from a weakly correlated state to a strongly correlated state upon Cr substitution;however,the mechanism driving this enhancement remains an open question.Here,we employed a combin... The Kagome metal CsV3Sb5 transitions from a weakly correlated state to a strongly correlated state upon Cr substitution;however,the mechanism driving this enhancement remains an open question.Here,we employed a combination of density functional theory and dynamical mean-field theory(DFT+DMFT)to systematically investigate the evolution of electronic correlations in the CsV_(3−x)Cr_(x)Sb_(5)(x=0,1,and 3)series.Our calculations revealed that Cr doping drives the system into a strongly correlated Hund’s metal phase,which is characterized by significant and orbital-dependent enhancements in the quasiparticle effective masses and electronic scattering rates.We trace the origin of this transition to the doping-induced shift from low-to high-spin atomic configurations.This preference for high-spin states,which is promoted by near-half-filling of the Cr-d orbitals,induces a pronounced orbital blocking effect that strengthens the correlations.Our findings establish that Hund’s coupling is the decisive factor governing the rich correlation physics in the CsV_(3−x)Cr_(x)Sb_(5) family,providing a tunable platform for exploring Hund’s metallicity. 展开更多
关键词 hund s metal pha dynamical mean field theory density functional theory electronic correlations evolution electronic correlations hunds metallicity kagome metal csv sb cr substitution
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Global Well-Posedness for 3D Generalized MHD-Boussinesq Equations
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作者 Xiao LI Qiuyue ZHANG 《Journal of Mathematical Research with Applications》 2026年第2期235-250,共16页
We investigate the three-dimensional(3D)generalized magnetohydrodynamic(MHD)-Boussinesq system with fractional dissipation and damping terms,aiming to establish the well-posedness theory for the 3D incompressible temp... We investigate the three-dimensional(3D)generalized magnetohydrodynamic(MHD)-Boussinesq system with fractional dissipation and damping terms,aiming to establish the well-posedness theory for the 3D incompressible temperature-dependent MHD-Boussinesq equations with damping.By exploiting the structural properties of the system and performing refined a priori estimates,we address the global well-posedness of solutions under the weakest possible dissipation conditions. 展开更多
关键词 MHD-Boussinesq equation global well-posedness DAMPING
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Call for Papers:Special Topic:Acupuncture Points:The Key to the Globalization of Acupuncture
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《Chinese Medicine and Culture》 2026年第1期F0002-F0002,共1页
With the deepening of traditional Chinese medicine’s(TCM)“going global”strategy,acupuncture,a representative therapy of TCM,has been widely spread and recognized worldwide.The World Health Organization has included... With the deepening of traditional Chinese medicine’s(TCM)“going global”strategy,acupuncture,a representative therapy of TCM,has been widely spread and recognized worldwide.The World Health Organization has included it in the global blueprint for traditional medicine development,and many countries have integrated it into their national healthcare systems. 展开更多
关键词 acupuncture points ACUPUNCTURE World Health Organization globalIZATION going global traditional chinese medicine s tcm going national healthcare systems traditional chinese medicine
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Correlation between life satisfaction,pleasure level,and negative emotion in patients with chronic renal failure
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作者 Lin-Lin Zhang You-Li Zhang +3 位作者 Ting Liu Jian Wang Chen Chen Xiao-Yu Wang 《World Journal of Psychiatry》 2026年第1期291-298,共8页
BACKGROUND Anxiety,depression,and other negative emotions are common among patients with chronic renal failure(CRF).Analyzing the factors related to negative emotions is necessary to provide targeted nursing care.AIM ... BACKGROUND Anxiety,depression,and other negative emotions are common among patients with chronic renal failure(CRF).Analyzing the factors related to negative emotions is necessary to provide targeted nursing care.AIM To explore the correlations among life satisfaction,pleasure levels,and negative emotions in patients with CRF.METHODS One hundred patients with CRF who received therapy at the First Affiliated Hospital of Jinzhou Medical University between December 2022 and February 2025 were included.The Depression,Anxiety,and Stress Scale(DASS-21),Satisfaction with Life Scale(SWLS),and Temporal Experience of Pleasure Scale(TEPS)were used to evaluate negative emotions,life satisfaction,and pleasure level,respectively.Pearson’s correlation coefficient analyzed the correlation between life satisfaction,pleasure level,and negative emotions.Linear regression analysis identified the factors affecting negative emotions.RESULTS The average DASS-21 score among patients with CRF was 51.90±2.30,with subscale scores of 17.90±1.50 for depression,18.53±1.18 for anxiety,and 15.47±2.36 for stress,all significantly higher than the domestic norm(P<0.05).The average SWLS score was 22.17±4.90.Correlation analysis revealed a negative correlation between the SWLS and total DASS-21 scores(P<0.05),but not with the individual depression,anxiety,or stress dimensions.The average TEPS score was 67.80±8.34.TEPS scores were negatively correlated with the DASS-21 score and the stress dimension(P<0.05),but not with depression or anxiety.Linear regression analysis showed that TEPS scores significantly influenced DASS-21 scores(P<0.05).CONCLUSION Patients with CRF experience high levels of negative emotions,which are negatively correlated with life satisfaction and pleasure.Furthermore,pleasure level had an impact on negative emotions. 展开更多
关键词 Chronic renal failure HEMODIALYSIS Negative emotion Life satisfaction PLEASURE correlation
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