On June 17,the Seminar on 70 Years of China-Africa and China-Arab Diplomatic Relations:Jointly Building a Community with a Shared Future was held in Beijing.China's Vice Foreign Minister Miao Deyu attended and del...On June 17,the Seminar on 70 Years of China-Africa and China-Arab Diplomatic Relations:Jointly Building a Community with a Shared Future was held in Beijing.China's Vice Foreign Minister Miao Deyu attended and delivered an address at the opening ceremony of the seminar.President of the China Institute of International Studies(CIIS)Chen Bo hosted the opening ceremony.展开更多
Now,constructiveness prevails as the vision of the constructive China-U.S.relationship of strategic stability has been agreed upon by the two leaders.U.S.President Donald Trump’s China visit from May 13-15,2026 was a...Now,constructiveness prevails as the vision of the constructive China-U.S.relationship of strategic stability has been agreed upon by the two leaders.U.S.President Donald Trump’s China visit from May 13-15,2026 was a resounding success and marks a milestone in the world’s most important bilateral relationship.As Chinese President Xi Jinping said,2026 will be a“historic,landmark year”that opens up a new chapter in China-U.S.relations.展开更多
Purpose:While the imperative of enterprise digital transformation(EDT)has been widely acknowledged,a systematic understanding of its intricate network of antecedents and consequences remains fragmented.This study prop...Purpose:While the imperative of enterprise digital transformation(EDT)has been widely acknowledged,a systematic understanding of its intricate network of antecedents and consequences remains fragmented.This study proposes a novel knowledge representation framework that leverages large language models(LLMs)to construct a variable relational network(VRN),offering a panoramic,micro-level perspective on EDT.Design/methodology/approach:We extract five types of variable relationships from a vast corpus of academic publications on EDT to generate the VRN.Subsequently,we apply network topology analysis to uncover the temporal and regional characteristics of the VRN.Its hierarchical structure is then analyzed through K-shell decomposition.Findings:Our results show that,over the past two decades,the scale of the VRN has experienced rapid growth,driven collectively by multi-layered external factors such as the rapid advancement of digital technologies,and its internal connections have become increasingly tighter.Regional comparisons of the VRN reveal that different economies,shaped by institutional theories,exhibit distinct transformation paradigms while striving toward common goals.K-shell analysis uncovers a clear hierarchical structure,distinguishing peripheral,intermediate,and core variables,with these layers corresponding to varying degrees of strategic significance and transformation maturity.Research limitations:The study’s limitations primarily concern the accuracy of the VRN,which depends on the LLM’s extraction performance and its potential for hallucinations,which may introduce noise into the network topology.Practical implications:The VRN and its network topology structure serve as a diagnostic tool for strategic decisionmaking,enterprises and policymakers can also use these insights to design targeted support programs.Originality/value:This study contributes a data-driven,LLM-assisted framework for mapping the evolving and multidimensional landscape of enterprise digital transformation,thereby validating and extending the theoretical boundaries of EDT.展开更多
Backgrounds:Somatization and eating-related problems in adolescents living in residential care may be shaped by the interplay of risk and protective factors,including gender,relational trauma,attachment patterns,emoti...Backgrounds:Somatization and eating-related problems in adolescents living in residential care may be shaped by the interplay of risk and protective factors,including gender,relational trauma,attachment patterns,emotional intelligence,and perceived social support.This study examined how gender,relational trauma,attachment dimensions,resilience,and emotional intelligence contribute to the presence of somatic and eating difficulties in this population.Methods:The sample included 46 adolescents(63%female;ages 12–17,Mean=14.85,Standard Deviation(SD)=1.49)residing in child protection institutions in Uruguay.Participants completed self-report measures assessing childhood relational trauma(CaMir),attachment dimensions(anxiety and avoidance),resilience,emotional intelligence(adaptability and stress management),social support(MOS),and psychosocial adjustment(SENA subscales of somatization and eating problems).Using a fuzzy-set Qualitative Comparative Analysis(fsQCA)approach,distinct configurations of risk and protective factors associated with elevated levels of somatization and eating problems were identified.Results:Relational trauma and attachment anxiety showed moderate associations with both somatization and eating problems(r=0.52–0.57,p<0.01),whereas stress management was negatively associated with both outcomes(r=−0.37 to−0.47,p<0.05).FsQCA revealed multiple configurations of risk and protective factors explaining 81–90%of cases,with solution consistencies ranging from 0.83 to 0.87.Results suggest that relational trauma and attachment anxiety are key risk conditions,whereas resilience,emotional regulation,and perceived social support function as protective factors.Conclusions:Findings highlight the importance of considering multifactorial patterns of vulnerability and protection rather than single predictors and underscore the need for tailored interventions that strengthen resilience and emotional skills while addressing the impact of early relational trauma.展开更多
Bipolar max-product fuzzy relation equations(BMPFREs)with product negation are important in decision-making because of the consideration of both positive and negative effects.In this paper,the solvability of BMPFREs w...Bipolar max-product fuzzy relation equations(BMPFREs)with product negation are important in decision-making because of the consideration of both positive and negative effects.In this paper,the solvability of BMPFREs with product negation whose independent terms may take the value zero is considered.Based on the matrix representation of BMPFREs with product negation,a bipolar constraint matrix is constructed.A new necessary and sufficiency condition is proposed by exploring the structural features of bipolar constraint matrix,and all solutions are derived to solve BMPFREs.As an application of the bipolar constraint matrix method,the solvability of a special kind of bipolar max-product fuzzy relation inequalities(BMPFRIs)with product negation is further discussed.展开更多
Dialogue relation extraction,as a novel and significant task in recent years,aims to identify the relationship between a pair of subject and object within a conversation.This task serves as a fundamental technical bas...Dialogue relation extraction,as a novel and significant task in recent years,aims to identify the relationship between a pair of subject and object within a conversation.This task serves as a fundamental technical basis for research fields such as dialogue generation and dialogue understanding,offering significant theoretical and practical value.Considering the complicated logical structure based on speaker interactions in multi-party dialogues,which entail abundant information,we aim to enhance the contextual representation of dialogue texts by integrating the dialogue structure into encoders on the basis of pretrained language models.Specifically,we define two types of dialogue structures and introduce an attention correction module into the self-attention layer of pretrained language models.This module parameterizes the dialogue structure into trainable neural network layers,calculates attention biases on the basis of the dialogue structure,and uses these biases to adjust the standard attention scores,thereby integrating knowledge of the dialogue structure into the encoding process.Our approach can be seamlessly integrated into any dialogue model on the basis of pretrained language models.We conduct comprehensive experiments on two dialogue relation extraction datasets,DialogRE and DDRel,which achieve significantly improved results compared with the competitive baselines.展开更多
Vaginal delivery is a fascinating physiological process,but also a high-risk process.Up to 85%–90%of vaginal deliveries lead to perineal trauma,with nearly 11%of severe perineal tearing.It is a common occurrence,espe...Vaginal delivery is a fascinating physiological process,but also a high-risk process.Up to 85%–90%of vaginal deliveries lead to perineal trauma,with nearly 11%of severe perineal tearing.It is a common occurrence,especially for first-time mothers.Computational childbirth plays an essential role in the prediction and prevention of these traumas,but fast personalization of the pelvis and floor muscles is challenging due to their anatomical complexity.This study introduces a novel shape-prediction-based personalization of the pelvis and floor muscles for perineal tearing management and childbirth simulation.300 subjects were selected from public Computed Tomography(CT)databases.The pelvic bone nmjmeshes were generated using a coarse-to-fine non-rigid mesh alignment procedure.The floor muscle meshes were personalized using the bone mesh deformation information.A feature-to-pelvic structure reconstruction pipeline was proposed,incorporating various strategies.Ten-fold cross-validation helped determine the optimal reconstruction strategy,regression method,and feature sizes.The mesh-to-mesh distance metric was employed for evaluating.The statistical shape relation-based strategy,coupled with multi-output ridge regression,was the optimal approach for pelvic structure reconstruction.With a feature set ranging from 3 to 38,the mean errors were 2.672 to 1.613 mm,and 3.237 to 1.415 mm in muscle attachment regions.The best-and worst-case predictions had errors of 1.227±0.959 mm and 2.900±2.309 mm,respectively.This study provides a novel approach to achieving fast personalized childbirth modeling and simulation for perineal tearing management.展开更多
Robust cooperative unmanned aerial vehicle(UAV)formation in complex 3D environments is hampered by reward sparsity and inefficient collaboration.To address this,we propose context-aware relational agent learning(CORAL...Robust cooperative unmanned aerial vehicle(UAV)formation in complex 3D environments is hampered by reward sparsity and inefficient collaboration.To address this,we propose context-aware relational agent learning(CORAL),a novel multi-agent deep reinforcement learning framework.CORAL synergistically integrates two modules:(1)a novelty-based intrinsic reward module to drive efficient exploration and(2)an explicit relational learning module that allows agents to predict peer intentions and enhance coordination.Built on a multi-agent Actor-Critic architecture,CORAL enables agents to balance self-interest with group objectives.Comprehensive evaluations in a high-fidelity simulation show that our method significantly outperforms state-of-theart baselines like multi-agent deep deterministic policy gradient(MADDPG)and monotonic value function factorisation for deep multi-agent reinforcement learning(QMIX)in path planning efficiency,collision avoidance,and scalability.展开更多
Background: This study focuses on the fabrication and optimization of Ti6Al4V alloy latticestructures produced by the Selective Laser Melting (SLM) process. Such structures areincreasingly used in biomedical implants ...Background: This study focuses on the fabrication and optimization of Ti6Al4V alloy latticestructures produced by the Selective Laser Melting (SLM) process. Such structures areincreasingly used in biomedical implants due to their potential to match the mechanicalproperties of human bone. Key features influencing their performance include porosity ratio,surface roughness, elastic modulus, and yield strength. Achieving a balance between theseparameters is essential for ensuring both mechanical integrity and biological compatibility.Methods: The Taguchi method integrated with Grey Relational Analysis (GRA) wasemployed to optimize the SLM process parameters—laser power (160-240 J), scanningspeed (1000-1500 mm/min), and hatch spacing (0.06-0.12 mm). The optimization aimed toproduce lattice structures with properties closely resembling human bone. Experimentaltrials were conducted to evaluate the effects of these parameters on porosity, surfaceroughness, elastic modulus, and yield strength, followed by statistical and relational analysisto determine the optimal configuration. Results: The results revealed that higher scanningspeed, wider hatch spacing, and lower laser power increased the porosity ratio compared toCAD models. A strong inverse relationship was observed between porosity and both yieldstrength and elastic modulus. Increasing laser power substantially reduced surfaceroughness. Through Taguchi-GRA optimization, the optimal parameter combination wasdetermined as laser power of 240 J, scanning speed of 1250 mm/min, and hatch spacing of0.06 mm. Under these conditions, the obtained values were: modulus of elasticity (0°) = 20GPa, modulus of elasticity (90°) = 18.874 GPa, yield strength (0°) = 265 MPa, yieldstrength (90°) = 260 MPa, porosity = 48.565%, and surface roughness = 6.223 μm.Conclusion: The optimized SLM parameters successfully produced Ti6Al4V latticestructures with mechanical and morphological characteristics compatible with human bone.The study highlights the critical balance between process parameters and structuralfeatures, providing a systematic approach for tailoring lattice structures for biomedicalapplications through Taguchi and GRA-based optimization.展开更多
The relative dispersion of cloud and fog droplets has significant impacts on aerosol indirect effects,radiative transfer,and microphysical processes.However,previous studies have been mostly concerned with clouds,with...The relative dispersion of cloud and fog droplets has significant impacts on aerosol indirect effects,radiative transfer,and microphysical processes.However,previous studies have been mostly concerned with clouds,with limited studies on fog,particularly those that examine the combined influences of all key physical processes and their roles during fog evolution.As such,this study aims to conduct a comprehensive investigation by examining the relationships between relative dispersion and other microphysical variables,as well as the underlying microphysical and dynamic processes,based on field fog campaigns in polluted and clean conditions.In polluted fog,droplet concentrations are higher,leading to smaller droplets and increased dispersion.The correlation between dispersion and droplet volume-mean radius is positive in the polluted fog,but shifts to negative in clean fog.We attribute the difference to various microphysical processes like aerosol activation,condensation,collision-coalescence,and entrainment-mixing.In polluted fog,high aerosol concentrations,low supersaturations,and strong turbulence(entrainment-mixing)provide suitable conditions for the simultaneous occurrence of droplet condensation and aerosol activation,resulting in a positive correlation between dispersion and volume-mean radius,especially during the fog formation stage.In contrast,during the mature stage in clean fog,condensation is dominant with weak aerosol activation leading to a negative correlation between relative dispersion and volume-mean radius.The collision-coalescence process is more active in the mature stage,increasing radii and leading to the negative correlation between dispersion and volume-mean radius.This result sheds new light on understanding the relative dispersion and mechanisms in fog under different aerosol backgrounds.展开更多
On December 29-30,2025,the China Institute of International Studies(CIIS)held the 2025 Symposium on the International Situation and China’s Foreign Relations in Beijing.Wang Yi,Member of the Political Bureau of the C...On December 29-30,2025,the China Institute of International Studies(CIIS)held the 2025 Symposium on the International Situation and China’s Foreign Relations in Beijing.Wang Yi,Member of the Political Bureau of the CPC Central Committee and Minister of Foreign Affairs,attended the opening ceremony and delivered a keynote speech.展开更多
The"America First"goal,power politics principle,interventionist tendencies,and the return of the Monroe Doctrine,highlighted in Trump's second-term National Security Strategy(NSS),especially the so-calle...The"America First"goal,power politics principle,interventionist tendencies,and the return of the Monroe Doctrine,highlighted in Trump's second-term National Security Strategy(NSS),especially the so-called mission to save European civilization,will bring unprecedented uncertainties and challenges to transatlantic relations.The NSS will have a comprehensive impact on Europe,not only further weakening its international role but also widening the gap between its strategic autonomy ambition and capability,worsening the security environment,and exacerbating internal divisions within Europe,thus affecting the deepening of European integration.In the future,the drifting of transatlantic relations will accelerate,the feature of transactionalism will stand out,the security perceptions and interests of the US and Europe will be rapidly diverging,and the intervention in European political development from the US will become a new source of conflict,while the shared Western identity of interconnectedness will also drift further away.展开更多
Since the start of his new term,Donald Trump has upheld transactional principles in handling relations with allies,reducing security commitments to the EU while attempting to promote a rapprochement in US-Russia relat...Since the start of his new term,Donald Trump has upheld transactional principles in handling relations with allies,reducing security commitments to the EU while attempting to promote a rapprochement in US-Russia relations.This shift has propelled US-EU-Russia relations into a phase of trilateral dynamics characterized by autonomous competition.Amid escalating global crises that urgently demand reforms of the global governance architecture,the more equal and autonomous multi-party dynamics among major powers are poised to evolve toward coordination and cooperation.展开更多
Since modern times,with the development of social economy,the self-sufficient small-peasant economy under feudal rule has gradually disintegrated,and the capitalist economy has emerged and grown.China’s trade continu...Since modern times,with the development of social economy,the self-sufficient small-peasant economy under feudal rule has gradually disintegrated,and the capitalist economy has emerged and grown.China’s trade continued to expand.The Ming government exchanged large quantities of goods with neighboring countries,fostering economic and trade development between China and its neighbors,and its influence extended beyond Southeast Asia,even leaving traces of Chinese commercial activities in Europe and Africa,thereby deepening other regions’longing for China.展开更多
As an ordinary Yunnan local,I never imagined becoming so closely connected to the exotic land of Laos.The luckiest event of my life was probably my choice to tick a box on a 2007 college entrance examination applicati...As an ordinary Yunnan local,I never imagined becoming so closely connected to the exotic land of Laos.The luckiest event of my life was probably my choice to tick a box on a 2007 college entrance examination application form,indicating my willingness to enrollin a major other than my preference,which led me into the world of the Lao language.展开更多
As this year marks the 65th anniversary of the China-DPRK Treaty of Friendship,Cooperation and Mutual Assistance,Chinese President Xi Jinping’s visit to Pyongyang has ushered in a new chapter in bilateral relations.O...As this year marks the 65th anniversary of the China-DPRK Treaty of Friendship,Cooperation and Mutual Assistance,Chinese President Xi Jinping’s visit to Pyongyang has ushered in a new chapter in bilateral relations.ON June 9,2026,Xi Jinping,general secretary of the Communist Party of China(CPC)Central Committee and Chinese president,wrapped up his two-day state visit to the Democratic People’s Republic of Korea(DPRK).展开更多
Mary Shelley’s Frankenstein is most commonly read as a tale of scientific transgression,yet the creature’s trajectory reveals a profound educational dimension.This paper applies Carl Rogers’humanistic education the...Mary Shelley’s Frankenstein is most commonly read as a tale of scientific transgression,yet the creature’s trajectory reveals a profound educational dimension.This paper applies Carl Rogers’humanistic education theory to reexamine the creature as a learner whose development unfolds in the absence of relational support.Although he acquires language,moral awareness,and reflective capacity,his learning fails to achieve psychological integration.Drawing on Rogers’three facilitative conditions,this study argues that the creature’s tragedy stems not from cognitive deficiency,but from the sustained absence of empathy,recognition,and unconditional positive regard.Frankenstein thus anticipates a central insight of humanistic education:Knowledge divorced from relational response may deepen alienation rather than foster wholeness.展开更多
General Secretary of the Communist Party of Vietnam(CPV)Central Committee and President of Vietnam To Lam visited China on April 14,just a week after being officially elected president of Vietnam.China was the first c...General Secretary of the Communist Party of Vietnam(CPV)Central Committee and President of Vietnam To Lam visited China on April 14,just a week after being officially elected president of Vietnam.China was the first country he visited after taking office in his new role as head of state.展开更多
On the occasion of the 65th anniversary of the establishment of diplomatic relations between China and Laos,I wish to express,on behalf of the Embassy of the People's Republic of China in the Lao People's Demo...On the occasion of the 65th anniversary of the establishment of diplomatic relations between China and Laos,I wish to express,on behalf of the Embassy of the People's Republic of China in the Lao People's Democratic Republic,our sincere gratitude and highest respect to all friends and personages from various sectors in both countries who have long cared about and supported the development of our bilateral relations.展开更多
On the threshold of 55 years of diplomatic relations,Cyprus and China stand to gain significantly by deepening their cooperation in trade,tourism,and green technology,guided by mutual respect and shared principles.WIT...On the threshold of 55 years of diplomatic relations,Cyprus and China stand to gain significantly by deepening their cooperation in trade,tourism,and green technology,guided by mutual respect and shared principles.WITH a population of approximately one million,Cyprus is a small country compared to China,which is home to more than 1.4 billion people.展开更多
摘要On June 17,the Seminar on 70 Years of China-Africa and China-Arab Diplomatic Relations:Jointly Building a Community with a Shared Future was held in Beijing.China's Vice Foreign Minister Miao Deyu attended and delivered an address at the opening ceremony of the seminar.President of the China Institute of International Studies(CIIS)Chen Bo hosted the opening ceremony.
摘要Now,constructiveness prevails as the vision of the constructive China-U.S.relationship of strategic stability has been agreed upon by the two leaders.U.S.President Donald Trump’s China visit from May 13-15,2026 was a resounding success and marks a milestone in the world’s most important bilateral relationship.As Chinese President Xi Jinping said,2026 will be a“historic,landmark year”that opens up a new chapter in China-U.S.relations.
摘要Purpose:While the imperative of enterprise digital transformation(EDT)has been widely acknowledged,a systematic understanding of its intricate network of antecedents and consequences remains fragmented.This study proposes a novel knowledge representation framework that leverages large language models(LLMs)to construct a variable relational network(VRN),offering a panoramic,micro-level perspective on EDT.Design/methodology/approach:We extract five types of variable relationships from a vast corpus of academic publications on EDT to generate the VRN.Subsequently,we apply network topology analysis to uncover the temporal and regional characteristics of the VRN.Its hierarchical structure is then analyzed through K-shell decomposition.Findings:Our results show that,over the past two decades,the scale of the VRN has experienced rapid growth,driven collectively by multi-layered external factors such as the rapid advancement of digital technologies,and its internal connections have become increasingly tighter.Regional comparisons of the VRN reveal that different economies,shaped by institutional theories,exhibit distinct transformation paradigms while striving toward common goals.K-shell analysis uncovers a clear hierarchical structure,distinguishing peripheral,intermediate,and core variables,with these layers corresponding to varying degrees of strategic significance and transformation maturity.Research limitations:The study’s limitations primarily concern the accuracy of the VRN,which depends on the LLM’s extraction performance and its potential for hallucinations,which may introduce noise into the network topology.Practical implications:The VRN and its network topology structure serve as a diagnostic tool for strategic decisionmaking,enterprises and policymakers can also use these insights to design targeted support programs.Originality/value:This study contributes a data-driven,LLM-assisted framework for mapping the evolving and multidimensional landscape of enterprise digital transformation,thereby validating and extending the theoretical boundaries of EDT.
摘要Backgrounds:Somatization and eating-related problems in adolescents living in residential care may be shaped by the interplay of risk and protective factors,including gender,relational trauma,attachment patterns,emotional intelligence,and perceived social support.This study examined how gender,relational trauma,attachment dimensions,resilience,and emotional intelligence contribute to the presence of somatic and eating difficulties in this population.Methods:The sample included 46 adolescents(63%female;ages 12–17,Mean=14.85,Standard Deviation(SD)=1.49)residing in child protection institutions in Uruguay.Participants completed self-report measures assessing childhood relational trauma(CaMir),attachment dimensions(anxiety and avoidance),resilience,emotional intelligence(adaptability and stress management),social support(MOS),and psychosocial adjustment(SENA subscales of somatization and eating problems).Using a fuzzy-set Qualitative Comparative Analysis(fsQCA)approach,distinct configurations of risk and protective factors associated with elevated levels of somatization and eating problems were identified.Results:Relational trauma and attachment anxiety showed moderate associations with both somatization and eating problems(r=0.52–0.57,p<0.01),whereas stress management was negatively associated with both outcomes(r=−0.37 to−0.47,p<0.05).FsQCA revealed multiple configurations of risk and protective factors explaining 81–90%of cases,with solution consistencies ranging from 0.83 to 0.87.Results suggest that relational trauma and attachment anxiety are key risk conditions,whereas resilience,emotional regulation,and perceived social support function as protective factors.Conclusions:Findings highlight the importance of considering multifactorial patterns of vulnerability and protection rather than single predictors and underscore the need for tailored interventions that strengthen resilience and emotional skills while addressing the impact of early relational trauma.
基金supported by the National Natural Science Foundation of China under grants 62473239 and 62073202the Major Basic Research Project of Natural Science Foundation of Shandong Province under grant ZR2024ZD41the Young Experts of Taishan Scholar Project under grant tsqn201909076.
摘要Bipolar max-product fuzzy relation equations(BMPFREs)with product negation are important in decision-making because of the consideration of both positive and negative effects.In this paper,the solvability of BMPFREs with product negation whose independent terms may take the value zero is considered.Based on the matrix representation of BMPFREs with product negation,a bipolar constraint matrix is constructed.A new necessary and sufficiency condition is proposed by exploring the structural features of bipolar constraint matrix,and all solutions are derived to solve BMPFREs.As an application of the bipolar constraint matrix method,the solvability of a special kind of bipolar max-product fuzzy relation inequalities(BMPFRIs)with product negation is further discussed.
摘要Dialogue relation extraction,as a novel and significant task in recent years,aims to identify the relationship between a pair of subject and object within a conversation.This task serves as a fundamental technical basis for research fields such as dialogue generation and dialogue understanding,offering significant theoretical and practical value.Considering the complicated logical structure based on speaker interactions in multi-party dialogues,which entail abundant information,we aim to enhance the contextual representation of dialogue texts by integrating the dialogue structure into encoders on the basis of pretrained language models.Specifically,we define two types of dialogue structures and introduce an attention correction module into the self-attention layer of pretrained language models.This module parameterizes the dialogue structure into trainable neural network layers,calculates attention biases on the basis of the dialogue structure,and uses these biases to adjust the standard attention scores,thereby integrating knowledge of the dialogue structure into the encoding process.Our approach can be seamlessly integrated into any dialogue model on the basis of pretrained language models.We conduct comprehensive experiments on two dialogue relation extraction datasets,DialogRE and DDRel,which achieve significantly improved results compared with the competitive baselines.
基金funded by Vietnam National University Ho Chi Minh City(VNU-HCM)under grant number DS.C2025-28-06.
摘要Vaginal delivery is a fascinating physiological process,but also a high-risk process.Up to 85%–90%of vaginal deliveries lead to perineal trauma,with nearly 11%of severe perineal tearing.It is a common occurrence,especially for first-time mothers.Computational childbirth plays an essential role in the prediction and prevention of these traumas,but fast personalization of the pelvis and floor muscles is challenging due to their anatomical complexity.This study introduces a novel shape-prediction-based personalization of the pelvis and floor muscles for perineal tearing management and childbirth simulation.300 subjects were selected from public Computed Tomography(CT)databases.The pelvic bone nmjmeshes were generated using a coarse-to-fine non-rigid mesh alignment procedure.The floor muscle meshes were personalized using the bone mesh deformation information.A feature-to-pelvic structure reconstruction pipeline was proposed,incorporating various strategies.Ten-fold cross-validation helped determine the optimal reconstruction strategy,regression method,and feature sizes.The mesh-to-mesh distance metric was employed for evaluating.The statistical shape relation-based strategy,coupled with multi-output ridge regression,was the optimal approach for pelvic structure reconstruction.With a feature set ranging from 3 to 38,the mean errors were 2.672 to 1.613 mm,and 3.237 to 1.415 mm in muscle attachment regions.The best-and worst-case predictions had errors of 1.227±0.959 mm and 2.900±2.309 mm,respectively.This study provides a novel approach to achieving fast personalized childbirth modeling and simulation for perineal tearing management.
基金supported by the STI 2030 Major Projects(No.2022ZD0208804)the National Natural Science Foundation of China(No.62473017)。
摘要Robust cooperative unmanned aerial vehicle(UAV)formation in complex 3D environments is hampered by reward sparsity and inefficient collaboration.To address this,we propose context-aware relational agent learning(CORAL),a novel multi-agent deep reinforcement learning framework.CORAL synergistically integrates two modules:(1)a novelty-based intrinsic reward module to drive efficient exploration and(2)an explicit relational learning module that allows agents to predict peer intentions and enhance coordination.Built on a multi-agent Actor-Critic architecture,CORAL enables agents to balance self-interest with group objectives.Comprehensive evaluations in a high-fidelity simulation show that our method significantly outperforms state-of-theart baselines like multi-agent deep deterministic policy gradient(MADDPG)and monotonic value function factorisation for deep multi-agent reinforcement learning(QMIX)in path planning efficiency,collision avoidance,and scalability.
摘要Background: This study focuses on the fabrication and optimization of Ti6Al4V alloy latticestructures produced by the Selective Laser Melting (SLM) process. Such structures areincreasingly used in biomedical implants due to their potential to match the mechanicalproperties of human bone. Key features influencing their performance include porosity ratio,surface roughness, elastic modulus, and yield strength. Achieving a balance between theseparameters is essential for ensuring both mechanical integrity and biological compatibility.Methods: The Taguchi method integrated with Grey Relational Analysis (GRA) wasemployed to optimize the SLM process parameters—laser power (160-240 J), scanningspeed (1000-1500 mm/min), and hatch spacing (0.06-0.12 mm). The optimization aimed toproduce lattice structures with properties closely resembling human bone. Experimentaltrials were conducted to evaluate the effects of these parameters on porosity, surfaceroughness, elastic modulus, and yield strength, followed by statistical and relational analysisto determine the optimal configuration. Results: The results revealed that higher scanningspeed, wider hatch spacing, and lower laser power increased the porosity ratio compared toCAD models. A strong inverse relationship was observed between porosity and both yieldstrength and elastic modulus. Increasing laser power substantially reduced surfaceroughness. Through Taguchi-GRA optimization, the optimal parameter combination wasdetermined as laser power of 240 J, scanning speed of 1250 mm/min, and hatch spacing of0.06 mm. Under these conditions, the obtained values were: modulus of elasticity (0°) = 20GPa, modulus of elasticity (90°) = 18.874 GPa, yield strength (0°) = 265 MPa, yieldstrength (90°) = 260 MPa, porosity = 48.565%, and surface roughness = 6.223 μm.Conclusion: The optimized SLM parameters successfully produced Ti6Al4V latticestructures with mechanical and morphological characteristics compatible with human bone.The study highlights the critical balance between process parameters and structuralfeatures, providing a systematic approach for tailoring lattice structures for biomedicalapplications through Taguchi and GRA-based optimization.
基金supported by the Chinese National Natural Science Foundation under Grant Nos.(41975181,42325503,42375197,42575207,42205090)Y.LIU is supported by the U.S.Department of Energy’s Atmospheric System Research(ASR)program.
摘要The relative dispersion of cloud and fog droplets has significant impacts on aerosol indirect effects,radiative transfer,and microphysical processes.However,previous studies have been mostly concerned with clouds,with limited studies on fog,particularly those that examine the combined influences of all key physical processes and their roles during fog evolution.As such,this study aims to conduct a comprehensive investigation by examining the relationships between relative dispersion and other microphysical variables,as well as the underlying microphysical and dynamic processes,based on field fog campaigns in polluted and clean conditions.In polluted fog,droplet concentrations are higher,leading to smaller droplets and increased dispersion.The correlation between dispersion and droplet volume-mean radius is positive in the polluted fog,but shifts to negative in clean fog.We attribute the difference to various microphysical processes like aerosol activation,condensation,collision-coalescence,and entrainment-mixing.In polluted fog,high aerosol concentrations,low supersaturations,and strong turbulence(entrainment-mixing)provide suitable conditions for the simultaneous occurrence of droplet condensation and aerosol activation,resulting in a positive correlation between dispersion and volume-mean radius,especially during the fog formation stage.In contrast,during the mature stage in clean fog,condensation is dominant with weak aerosol activation leading to a negative correlation between relative dispersion and volume-mean radius.The collision-coalescence process is more active in the mature stage,increasing radii and leading to the negative correlation between dispersion and volume-mean radius.This result sheds new light on understanding the relative dispersion and mechanisms in fog under different aerosol backgrounds.
摘要On December 29-30,2025,the China Institute of International Studies(CIIS)held the 2025 Symposium on the International Situation and China’s Foreign Relations in Beijing.Wang Yi,Member of the Political Bureau of the CPC Central Committee and Minister of Foreign Affairs,attended the opening ceremony and delivered a keynote speech.
摘要The"America First"goal,power politics principle,interventionist tendencies,and the return of the Monroe Doctrine,highlighted in Trump's second-term National Security Strategy(NSS),especially the so-called mission to save European civilization,will bring unprecedented uncertainties and challenges to transatlantic relations.The NSS will have a comprehensive impact on Europe,not only further weakening its international role but also widening the gap between its strategic autonomy ambition and capability,worsening the security environment,and exacerbating internal divisions within Europe,thus affecting the deepening of European integration.In the future,the drifting of transatlantic relations will accelerate,the feature of transactionalism will stand out,the security perceptions and interests of the US and Europe will be rapidly diverging,and the intervention in European political development from the US will become a new source of conflict,while the shared Western identity of interconnectedness will also drift further away.
摘要Since the start of his new term,Donald Trump has upheld transactional principles in handling relations with allies,reducing security commitments to the EU while attempting to promote a rapprochement in US-Russia relations.This shift has propelled US-EU-Russia relations into a phase of trilateral dynamics characterized by autonomous competition.Amid escalating global crises that urgently demand reforms of the global governance architecture,the more equal and autonomous multi-party dynamics among major powers are poised to evolve toward coordination and cooperation.
摘要Since modern times,with the development of social economy,the self-sufficient small-peasant economy under feudal rule has gradually disintegrated,and the capitalist economy has emerged and grown.China’s trade continued to expand.The Ming government exchanged large quantities of goods with neighboring countries,fostering economic and trade development between China and its neighbors,and its influence extended beyond Southeast Asia,even leaving traces of Chinese commercial activities in Europe and Africa,thereby deepening other regions’longing for China.
摘要As an ordinary Yunnan local,I never imagined becoming so closely connected to the exotic land of Laos.The luckiest event of my life was probably my choice to tick a box on a 2007 college entrance examination application form,indicating my willingness to enrollin a major other than my preference,which led me into the world of the Lao language.
摘要As this year marks the 65th anniversary of the China-DPRK Treaty of Friendship,Cooperation and Mutual Assistance,Chinese President Xi Jinping’s visit to Pyongyang has ushered in a new chapter in bilateral relations.ON June 9,2026,Xi Jinping,general secretary of the Communist Party of China(CPC)Central Committee and Chinese president,wrapped up his two-day state visit to the Democratic People’s Republic of Korea(DPRK).
摘要Mary Shelley’s Frankenstein is most commonly read as a tale of scientific transgression,yet the creature’s trajectory reveals a profound educational dimension.This paper applies Carl Rogers’humanistic education theory to reexamine the creature as a learner whose development unfolds in the absence of relational support.Although he acquires language,moral awareness,and reflective capacity,his learning fails to achieve psychological integration.Drawing on Rogers’three facilitative conditions,this study argues that the creature’s tragedy stems not from cognitive deficiency,but from the sustained absence of empathy,recognition,and unconditional positive regard.Frankenstein thus anticipates a central insight of humanistic education:Knowledge divorced from relational response may deepen alienation rather than foster wholeness.
摘要General Secretary of the Communist Party of Vietnam(CPV)Central Committee and President of Vietnam To Lam visited China on April 14,just a week after being officially elected president of Vietnam.China was the first country he visited after taking office in his new role as head of state.
摘要On the occasion of the 65th anniversary of the establishment of diplomatic relations between China and Laos,I wish to express,on behalf of the Embassy of the People's Republic of China in the Lao People's Democratic Republic,our sincere gratitude and highest respect to all friends and personages from various sectors in both countries who have long cared about and supported the development of our bilateral relations.
摘要On the threshold of 55 years of diplomatic relations,Cyprus and China stand to gain significantly by deepening their cooperation in trade,tourism,and green technology,guided by mutual respect and shared principles.WITH a population of approximately one million,Cyprus is a small country compared to China,which is home to more than 1.4 billion people.