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The right is more conservative than the left:a postnatal hypothesis of handedness based on mice 认领 引用
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作者 Qingqing Wang Jiesi Wang +2 位作者 Yan Wang Xin Jin Zhongsheng Sun 《Journal of Genetics and Genomics》 SCIE CAS CSCD 2026年第2期197-208,共12页
Handedness is a fundamental behavioral trait in humans,with the majority exhibiting right-hand dominance.While its origins remain elusive,it is considered an innate genetic trait.This study demonstrates pawedness in m... Handedness is a fundamental behavioral trait in humans,with the majority exhibiting right-hand dominance.While its origins remain elusive,it is considered an innate genetic trait.This study demonstrates pawedness in mice(n=473),comparable to human handedness,as an acquired trait rapidly emerging after limited unilateral paw training.Notably,acquired right-pawedness demonstrates greater conservativeness compared to left-pawedness,as evidenced by stronger stability and greater resistance to reversal.This results in a population right-paw dominance under random training conditions.Moreover,acquired pawedness also exhibits sex differences,with the initial preference proving more malleable in females.These findings unveil the acquired features of pawedness in mice.By illuminating possible behavioral laterality commonalities across species,the study proposes a postnatal hypothesis for the origins of human handedness:it is not an innate genetic trait as traditionally believed,but rather an environmentally acquired stable behavior whose development is actively guided by genetic predispositions. 展开更多
关键词 Handedness Paw preference Unilateral paw training Right-paw dominance Postnatal hypothesis
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Baidu News and the return volatility of Chinese commodity futures:evidence for the sequential information arrival hypothesis 认领 引用
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作者 Ruwei Zhao Xiong Xiong +2 位作者 Junjun Ma Yuzhao Zhang Yongjie Zhang 《Financial Innovation》 2025年第1期2279-2302,共24页
This study uses Baidu News data and introduces a novel proxy for the rate of information flow to examine its relationship with return volatility in Chinese commodity futures and to test two competing hypotheses.We exa... This study uses Baidu News data and introduces a novel proxy for the rate of information flow to examine its relationship with return volatility in Chinese commodity futures and to test two competing hypotheses.We examine the contemporaneous relationships using correlation coefficient analysis,and find apparent differences between the information flow-return volatility relationship and the information flowtrading volume relationship.The empirical evidence contradicts the mixture of distribution hypothesis(MDH)and suggests that the rate of information flow distinctly affects trading volume and volatility.We conducted linear and nonlinear Granger causality tests to explore the sequential information arrival hypothesis(SIAH).The empirical results prove that a lead-lag linear and nonlinear causality exists between the information flow and return volatility of commodity futures,which is consistent with SIAH.In other words,a partial equilibrium exists before reaching the ultimate equilibrium when the new information arrives in the market.Finally,these findings are robust to alternative measurement of return volatility and subperiod analysis.Our findings reject the MDH and support the SIAH in the context of Chinese commodity futures. 展开更多
关键词 Baidu News Chinese commodity futures Return volatility Sequential information arrival hypothesis Mixture of distribution hypothesis
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The dilatancy-diffusion hypothesis,earthquake prediction,and operational earthquake forecasting:In memory of Professor Amos Nur on the 50th Anniversary of the 1975 Haicheng Earthquake 认领 引用
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作者 Lanbo Liu 《Earthquake Science》 CAS CSCD 2025年第5期465-484,共20页
Dilatancy is referred to the phenomenon of volume increase that occurs when a material is deformed.Dilatancy theory originated in geomechanics for the study of the behavior of granular materials.Later it is expanded t... Dilatancy is referred to the phenomenon of volume increase that occurs when a material is deformed.Dilatancy theory originated in geomechanics for the study of the behavior of granular materials.Later it is expanded to the case of more brittle materials like rocks when it is subjected to the load of varying effective stress and starts to crack and deform,then named the dilatancy-diffusion hypothesis.This hypothesis was developed to explain the changes in rock volume and pore pressure that occur prior to and during fault slip,which can influence earthquake dynamics.Dilatancy-fluid diffusion is a significant concept in understanding the seismogenic process and has served as the major theoretical pillar for earthquake prediction by its classic definition.This paper starts with the recount of fundamental laboratory experiments on granular materials and rocks,then conducts review and examination of the history for using the dilatancy-diffusion hypothesis to interpret the‘prediction’of the 1975 Haicheng Earthquake and other events.The Haicheng Earthquake is the first significant event to be interpreted with the dilatancy-diffusion hypothesis in the world.As one pivotal figure in the development of the dilatancy-diffusion hypothesis for earthquake prediction Professor Amos Nur of Stanford University worked tirelessly to attract societal attention to this important scientific and humanistic issue.As a deterministic physical model the dilatancy-diffusion hypothesis intrinsically bears the deficit to interpret the stochastic seismogenic process.With the emergence of deep learning and its successful applications to many science and technology fields,we may see a possibility to overcome the shortcoming of the current state of the theory with the addition of empirical statistics to push the operational earthquake forecasting approach with the addition of the physicallyinformed neural networks which adopt the dilatancy-diffusion hypothesis as one of its embedded physical relations,to uplift the seismic risk reduction to a new level for saving lives and reducing the losses. 展开更多
关键词 dilatancy-diffusion hypothesis Amos Nur Haicheng Earthquake earthquake prediction operational earthquake forecasting(OEF) physically-informed neural networks(PINNs)
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Analysis of the practical applicability of the generalized wave impedance hypothesis in split Hopkinson pressure bar tests 认领 引用 被引量：1
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作者 Yiding Wu Wencheng Lu +4 位作者 Xuan Zhou Minghui Ma Yilei Yu Lizhi Xu Guangfa Gao 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2025年第10期96-114,共19页
This paper explores the applicability of the generalized wave impedance hypothesis in split Hopkinson pressure bar(SHPB)experiments,particularly under non-ideal conditions.The study investigates the effects of changes... This paper explores the applicability of the generalized wave impedance hypothesis in split Hopkinson pressure bar(SHPB)experiments,particularly under non-ideal conditions.The study investigates the effects of changes in wave impedance ratio and cross-sectional area ratio on the dynamic response of materials at high strain rates.Through theoretical analysis and numerical simulation,the impact of different wave impedance and cross-sectional area ratios on stress wave propagation characteristics is discussed in detail.It is found that when the cross-sections of two bars differ,shear strain occurs at the abrupt cross-section,leading to waveform distortion in the transmitted and reflected waves.The force balance condition does not always align with the momentum conservation theorem,and only when the three waveforms and wavelengths are completely consistent do they align.The research shows that when the wave impedance ratio and cross-sectional area ratio are within a specific range,the generalized wave impedance hypothesis can accurately predict changes in Young’s modulus and density.Additionally,the study extends the exploration to key factors such as wave impedance ratio,wave speed,Young’s modulus,density,and area ratio. 展开更多
关键词 SHPB Stress uniformity assumption Dynamic stress-strain curve Generalized wave impedance hypothesis
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Himalayan origin and global dispersal route of the peppered moth Biston betularia(Geometridae,Ennominae) 认领 引用 被引量：1
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作者 Rui Cheng Hong-Xiang Han Chao-Dong Zhu 《Journal of Systematics and Evolution》 SCIE CSCD 2026年第1期19-32,共14页
The peppered moth Biston betularia L.,widely distributed across the Northern Hemisphere,represents an ideal organism for exploring phylogeographic patterns and evolutionary history.In this study,we integrated molecula... The peppered moth Biston betularia L.,widely distributed across the Northern Hemisphere,represents an ideal organism for exploring phylogeographic patterns and evolutionary history.In this study,we integrated molecular,morphological,and distributional data of this species to reconstruct its phylogenetic relationships,estimate divergence times,infer the geographic origin,and trace dispersal routes.Molecular analyses identified six monophyletic lineages(HM,NC,HD,E,NA I,and NA II).With the exception of the sympatric North American lineages NA I and NA II,the remaining lineages exhibit allopatric distributions across Eurasia.Ancestral area reconstruction and approximate Bayesian computation(ABC)analyses supported a southern Xizang origin within the Himalayan Mountains,consistent with the“Xizang-origin hypothesis.”The colonization of North America occurred twice via the Bering Land Bridge during the Pleistocene glaciation.Collectively,the current genetic pattern is best explained by gradual allopatric differentiation following long-distance dispersal and subsequent isolation.Furthermore,we reconstructed the global dispersal history of B.betularia.These results indicated that in situ speciation within the Himalaya may be more common than previously recognized,challenging the notion that Himalayan fauna are predominantly considered“immigrant.”This study enhances our understanding of Himalayan zoogeography and biodiversity through the resolved evolutionary history of a widely distributed species. 展开更多
关键词 ABC analysis allopatric differentiation genetic pattern phylogeographical structure Xizang-origin hypothesis
Countability of Infinite Paths in the Infinity Tree: Proof of the Continuum Hypothesis in a Non-Cantorian Infinity Theory 认领 引用
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作者 Philip C. Jackson 《Advances in Pure Mathematics》 2025年第1期73-90,共18页
A previous paper showed that the real numbers between 0 and 1 could be represented by an infinite tree structure, called the ‘infinity tree’, which contains only a countably infinite number of nodes and arcs. This p... A previous paper showed that the real numbers between 0 and 1 could be represented by an infinite tree structure, called the ‘infinity tree’, which contains only a countably infinite number of nodes and arcs. This paper discusses how a finite-state Turing machine could, in a countably infinite number of state transitions, write all the infinite paths in the infinity tree to a countably infinite tape. Hence it is argued that the real numbers in the interval [0, 1] are countably infinite in a non-Cantorian theory of infinity based on Turing machines using countably infinite space and time. In this theory, Cantor’s Continuum Hypothesis can also be proved. And in this theory, it follows that the power set of the natural numbers P(ℕ) is countably infinite, which contradicts the claim of Cantor’s Theorem for the natural numbers. However, this paper does not claim there is an error in Cantor’s arguments that [0, 1] is uncountably infinite. Rather, this paper considers the situation as a paradox, resulting from different choices about how to represent and count the continuum of real numbers. 展开更多
关键词 Infinity Countable Uncountable Diagonalization Real Numbers Infinity Tree Continuum Hypothesis Turing Machine Infinite Time Turing Machine Non-Cantorian
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Consequences of Invariant Functions for the Riemann Hypothesis 认领 引用
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作者 Michael Mark Anthony 《Advances in Pure Mathematics》 2025年第1期36-72,共37页
This paper attempts to form a bridge between a sum of the divisors function and the gamma function, proposing a novel approach that could have significant implications for classical problems in number theory, specific... This paper attempts to form a bridge between a sum of the divisors function and the gamma function, proposing a novel approach that could have significant implications for classical problems in number theory, specifically the Robin inequality and the Riemann hypothesis. The exploration of using invariant properties of these functions to derive insights into twin primes and sequential primes is a potentially innovative concept that deserves careful consideration by the mathematical community. 展开更多
关键词 LambertW Function Principal Branch Riemann Hypothesis Iterations Robin Inequality Robin Integers Invariance Gauss Gamma Function Li-Function Prime Counting Function Sums of Divisors Invariance Primes Twin Primes
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Fair game:urban free-ranging dogs balance resource use and risk aversion at seasonal fairs 认领 引用
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作者 Sourabh Biswas Kalyan Ghosh +1 位作者 Hindolii Gope Anindita Bhadra 《Current Zoology》 SCIE CAS CSCD 2026年第1期116-126,共11页
Seasonal fairs,bustling with human activity,provide a unique environment for exploring the interplay between humans and free-ranging dogs in a human-dominated habitat.Across 14 fair sites in West Bengal,India,we explo... Seasonal fairs,bustling with human activity,provide a unique environment for exploring the interplay between humans and free-ranging dogs in a human-dominated habitat.Across 14 fair sites in West Bengal,India,we explored how human footfall and resource availability impact dog distribution and behavior.These fairs are typically held in open grounds during the winter and spring seasons,so data collection occurred from December to March,in two phases.Three randomly selected days during the fair were used for sampling in three sessions per day.Employing spot census,scan sampling and video recording,observers documented GPS locations,sex,and instantaneous behaviors of FRDs.There was a notable increase in human flux during the middle phase of the fair on a day,while dog abundance increased during the end phase.Dogs predominantly foraged,exhibited gait,and remained vigilant,their numbers were positively associated with resource availability.Proximity of territories to the fairground significantly shaped dog behavior;dogs closer to the fair demonstrated the consistency of presence,implying efficient resource utilization.Conversely,dogs from farther distances exhibited lower consistency and a“grab-and-go”strategy,suggesting cognitive adaptations to resource scarcity and competition.These findings lend support to the Resource Dispersion Hypothesis and underscore the intricate relationship between human activity,resource availability,and the behavior and cognition of FRDs during seasonal fairs.They offer insights into the ecological dynamics of FRDs in human-dominated landscapes,emphasizing the necessity for comprehensive management strategies in urban and peri-urban environments. 展开更多
关键词 anthropogenic landscapes behavioral dynamics cognitive mechanisms free-ranging dogs resource dispersion hypothesis seasonal fairs
Mapping the Panorama of Enterprise Digital Transformation:An LLM-Driven Variable Relational Network Perspective 认领 引用
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作者 Zhichao Ba Yujie Zhang +1 位作者 Biao Zhang Gang Li 《Journal of Data and Information Science》 CSCD 2026年第2期10-35,共26页
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
关键词 enterprise digital transformation scientific hypothesis large language models variable relational network hierarchical structure
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研发操纵与年报文本复杂性 认领 引用 被引量：1
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作者 于明洋 吕可夫 李书锋 《管理评论》 CSSCI 北大核心 2026年第3期183-197,共15页
创新是建设现代化经济体系的战略支撑,优化创新资源配置有助于激发企业创新活力。因此,对企业研发活动中机会主义行为的识别,是理论与实务界共同关注的重要议题。本文基于2008—2022年A股上市公司数据,探讨管理层为掩盖研发操纵对年报... 创新是建设现代化经济体系的战略支撑,优化创新资源配置有助于激发企业创新活力。因此,对企业研发活动中机会主义行为的识别,是理论与实务界共同关注的重要议题。本文基于2008—2022年A股上市公司数据,探讨管理层为掩盖研发操纵对年报文本进行的策略性信息披露,发现研发操纵较多的公司年报文本更复杂。机制检验发现,当公司受到更多外部关注、投资者关注度较高、短期投资者持股比例较高时,管理层更会通过复杂文字掩盖研发操纵,支持管理者模糊假说。并且,这种行为在公司政策寻租、“保盈”和管理者自利动机越强时越明显。此外,本文发现研发操纵会降低资源配置效率,进而影响公司创新效率与产品市场竞争地位。本文不仅丰富了研发活动和年报文本信息披露领域的相关研究,而且为识别创新活动中的机会主义行为,优化创新资源配置提供了经验证据。 展开更多
关键词 研发操纵 文本信息复杂性 可读性 管理者模糊假说
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碳排放权交易制度的“微观双赢效应”及其机制分析 认领 引用 被引量：8
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作者 崔学刚 毕煜晗 +1 位作者 姜鑫 孙依愿 《南开管理评论》 CSSCI 北大核心 2026年第1期4-14,26,共11页
环境保护对微观企业的价值影响一直存在争论。本文以碳排放权交易制度作为外部冲击,运用多时点双重差分模型构建准自然实验,研究碳排放权交易制度是否具有“微观双赢效应”。研究发现,碳排放权交易制度具有“微观双赢效应”,即在实现企... 环境保护对微观企业的价值影响一直存在争论。本文以碳排放权交易制度作为外部冲击,运用多时点双重差分模型构建准自然实验,研究碳排放权交易制度是否具有“微观双赢效应”。研究发现,碳排放权交易制度具有“微观双赢效应”,即在实现企业碳减排的同时提高了企业全要素生产率。通过一系列稳健性检验,该结论仍然成立。作用路径识别表明,碳排放权交易制度通过创新补偿效应、学习效应及先动优势效应实现“微观双赢效应”,支持了“波特假说”。作用机制检验表明,试点企业通过提高环保投入、发行更多绿色债券及吸引更多绿色投资者等机制来实现“微观双赢效应”。异质性分析发现,企业融资约束、行业竞争度及碳市场跨越与碳市场成交价都会对碳排放权交易制度的“微观双赢效应”产生影响,进一步印证了上述作用路径与作用机制。本研究结论为厘清环境保护与企业价值创造的关系提供了证据,为完善碳排放权交易制度提供了重要政策启示。 展开更多
关键词 碳排放权交易 微观双赢效应 碳排放强度 全要素生产率 波特假说
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婚姻匹配、性别观念与离婚风险——基于CFPS追踪调查数据的实证检验 认领 引用 被引量：1
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作者 张波 丁金宏 《人口与经济》 CSSCI 北大核心 2026年第1期60-73,共14页
以“婚姻异质性假说”为前提假设,运用中国家庭追踪调查(CFPS)2010—2022年数据,聚焦父母教育匹配和夫妻教育匹配,实证考察了婚姻匹配对离婚风险的影响及其作用机理。研究发现,父母教育匹配和夫妻教育匹配对离婚风险都存在显著影响,家... 以“婚姻异质性假说”为前提假设,运用中国家庭追踪调查(CFPS)2010—2022年数据,聚焦父母教育匹配和夫妻教育匹配,实证考察了婚姻匹配对离婚风险的影响及其作用机理。研究发现,父母教育匹配和夫妻教育匹配对离婚风险都存在显著影响,家庭背景匹配效应在离婚风险中存在。改革开放前期中等学历同质婚的离婚风险较高,改革开放深化期夫妻教育同质婚的离婚风险较低,其中高等学历同质婚稳定性最好,父母教育低等学历同质婚的离婚风险较高。在异质婚中,夫妻教育女高男低型的离婚风险较高,父母教育男高女低型的离婚风险较高。随着中国式现代化推进,异质婚与同质婚的离婚风险差异缩小。性别观念在夫妻教育匹配对离婚风险影响中存在中介效应。建议倡导婚姻匹配的开放性和性别平等观念,注重家教和家风建设,维护婚姻家庭的和谐稳定。 展开更多
关键词 离婚风险 婚姻匹配 婚姻稳定性 婚姻异质性假说 性别观念
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Amyloid degradation mechanisms and potential synergistic effects 认领 引用 被引量：1
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作者 Maksim I.Sulatsky Olesya V.Stepanenko +1 位作者 Olga V.Stepanenko Anna I.Sulatskaya 《Neural Regeneration Research》 SCIE CAS CSCD 2026年第5期1981-1982,共2页
Currently,our understanding of the pathogenesis of major neurodegenerative disorders,such as Alzheimer's,Parkinson's,and Huntington's diseases,is largely shaped by the amyloid cascade hypothesis.Pa rticula... Currently,our understanding of the pathogenesis of major neurodegenerative disorders,such as Alzheimer's,Parkinson's,and Huntington's diseases,is largely shaped by the amyloid cascade hypothesis.Pa rticularly,this hypothesis posits that in Alzheimer's disease,the aggregation of amyloid-beta peptide initiates a series of pathological processes leading to neuronal dysfunction and death(Zhang et al.,2024). 展开更多
关键词 amyloid cascade hypothesispa amyloid cascade hypothesis neuronal dysfunction Alzheimers disease neurodegenerative disorders Parkinsons disease amyloid beta peptide Huntingtons disease
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Multidimensional analyses of reptile assemblages:insights from phylogenetic,functional,and taxonomic diversity 认领 引用 被引量：1
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作者 Nadia Vicenzi Agustina Novillo +1 位作者 Jaiber J.Solano-Iguaran Leonardo D.Bacigalupe 《Current Zoology》 SCIE CAS CSCD 2026年第1期41-53,共13页
Multidimensional biodiversity approaches provide a framework for understanding the ecological and evolutionary processes that shape communities through time and space.In this study,we assess the spatial variation in t... Multidimensional biodiversity approaches provide a framework for understanding the ecological and evolutionary processes that shape communities through time and space.In this study,we assess the spatial variation in taxonomic,phylogenetic,and functional diversity of reptile assemblages along Chile’s latitudinal gradient to gain insight into the primary assembly processes structuring these communities.We compiled data on distribution,phylogeny,and functional traits and estimated alpha diversity indices of taxonomic,phylogenetic,and functional dimensions.We then assessed the assembly process under the stress dominance hypothesis(SDH),using null models to test whether the observed phylogenetic and functional diversity deviated from random patterns,suggesting the influence of habitat filtering or interspecific competition.We also examined environmental influences on diversity metrics.Our results show that phylogenetic diversity is a poor proxy for functional diversity,highlighting the importance of multidimensional approaches to understanding the drivers of assemblage composition and structure.In support of the SDH,habitat filtering influenced reptile assemblages in arid and cold environments,whereas interspecific competition influenced the assemblages in milder environments,such as the Mediterranean region and Valdivian forests.Furthermore,the spatial mismatch between diversity metrics allowed us to explore how assemblage composition and structure are influenced by local environmental heterogeneity,biogeographic history,and adaptive radiations of squamate reptiles.Environmental variables,particularly temperature,primary productivity,and topographic complexity,emerged as strong predictors of reptile diversity.Our study highlights the importance of integrating species’evolutionary history and ecological traits with taxonomic richness to improve our understanding of community composition,ecosystem functioning,history,and resilience. 展开更多
关键词 habitat filtering interspecific competition species richness squamata stress dominance hypothesis
我国图书情报研究领域扎根理论应用的逻辑辨析与实践考量 认领 引用 被引量：1
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作者 金胜勇 彭妍 武俊莹 《图书馆杂志》 CSSCI 北大核心 2026年第4期17-24,共8页
文章通过分析我国图书情报研究领域中应用扎根理论进行研究的核心期刊论文和学位论文,思考和总结扎根理论在我国图书情报研究领域应用中存在的问题。通过辨析提出扎根理论本质上是方法论,更是一种研究逻辑,研究的结论实质上是形成有待... 文章通过分析我国图书情报研究领域中应用扎根理论进行研究的核心期刊论文和学位论文,思考和总结扎根理论在我国图书情报研究领域应用中存在的问题。通过辨析提出扎根理论本质上是方法论,更是一种研究逻辑,研究的结论实质上是形成有待验证的理论假设,同时对如何保障扎根理论编码的准确性和理论饱和的达成等方面进行探讨,使应用于图书情报研究领域的扎根理论能够在不断明晰概念和认识中实现创新发展。扎根理论适用于有重大意义且需要持久付出的研究课题。 展开更多
关键词 扎根理论 图书情报学 研究逻辑 理论假设 理论饱和
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中国碳市场一体化的动态测度与阻碍因素研究 认领 引用
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作者 刘静一 朱正康 +1 位作者 高慧清 高望博 《运筹与管理》 CSCD 北大核心 2026年第2期70-76,共7页
本文构造了十个不同类型的碳市场一体化测度指标,筛选出了有效且稳健的指标,确定了最优的测度指标。在此基础上,分析了中国碳市场一体化的动态特征和结构突变点,并分别从经济基础的宏观层面和市场信息溢出的微观层面分析了中国碳市场一... 本文构造了十个不同类型的碳市场一体化测度指标,筛选出了有效且稳健的指标,确定了最优的测度指标。在此基础上,分析了中国碳市场一体化的动态特征和结构突变点,并分别从经济基础的宏观层面和市场信息溢出的微观层面分析了中国碳市场一体化的主要阻碍因素。结果表明,基于PCA方法构造得到的1stPC指标是指标体系中最佳的一体化测度指标,碳市场一体化对碳市场建设进程中的重大事件做出了反应;试点碳市场所在地区的价格差异和空气质量差异是宏观层面导致碳市场一体化程度不高的主要因素,而从微观层面来看,试点碳市场间的分割现象则源于市场间信息传导路径不畅。因此,可以通过统一试点碳市场间的政策体系、加快全国碳市场建设和引入机构投资者及丰富碳衍生品等方式提升中国碳市场一体化水平。 展开更多
关键词 碳市场一体化 经济基础 市场信息关联 阻碍因素
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考虑偏差修正的Bootstrap假设检验及大规模关键质量因子筛选研究 认领 引用
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作者 刘丽君 欧阳林寒 +1 位作者 马义中 吴锋 《管理科学学报》 CSSCI CSCD 北大核心 2026年第4期85-103,共19页
随着顾客需求的不断提高,产品已逐渐转为定制化、个性化生产模式,加之生产过程复杂化所导致的大规模因子,给现有的质量改进技术带来了巨大挑战.本文针对复杂化、定制化生产过程中因子数目大、样本量小的问题,提出了基于重抽样技术的关... 随着顾客需求的不断提高,产品已逐渐转为定制化、个性化生产模式,加之生产过程复杂化所导致的大规模因子,给现有的质量改进技术带来了巨大挑战.本文针对复杂化、定制化生产过程中因子数目大、样本量小的问题,提出了基于重抽样技术的关键因子筛选方法,为实现持续性质量改进奠定基础.首先,削弱了序贯分支因子筛选方法基于特定分布类型的模型假设,以适用小样本情形;其次,提出了不依赖于响应分布的序贯分支筛选步骤;然后,在利用自举法扩大样本量的基础上,提出了三种改进的学生t假设检验过程,用于每个分支过程中因子组效应的显著性检验;最后,通过蒙特卡洛仿真试验分别比较了所提的假设检验方法与经典的学生t检验的检验结果,并验证了所提方法在小样本、大规模关键因子筛选问题中的有效性及稳健性. 展开更多
关键词 小样本 大规模 因子筛选 序贯分支 自举法 假设检验
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基于“太少两感”立论辨证论治IgA肾病 认领 引用
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作者 梅洁 柳红芳 +5 位作者 于欣卉 徐哲宇 史奕欣 蔡丰翼 臧欣悦 李法威 《中国医药导报》 CAS 2026年第14期139-142,147,共4页
免疫球蛋白A(IgA)肾病是以肾小球系膜区IgA沉积为主要病理特点的原发性肾小球疾病,其临床进展可导致慢性肾衰竭,严重威胁患者生命健康。目前现代医学普遍接受的“四重打击”学说较系统地阐释IgA肾病的发病机制。该学说揭示疾病发生和发... 免疫球蛋白A(IgA)肾病是以肾小球系膜区IgA沉积为主要病理特点的原发性肾小球疾病,其临床进展可导致慢性肾衰竭,严重威胁患者生命健康。目前现代医学普遍接受的“四重打击”学说较系统地阐释IgA肾病的发病机制。该学说揭示疾病发生和发展过程与中医“太少两感”证有相通之处。本文结合“四重打击”学说,基于“太少两感”立论,系统阐述IgA肾病的病机:少阴阳虚为发病的内在基础,太阳感邪为致病的外在诱因,最终经病传腑形成少阴络痹的独特病理学改变。治疗策略上,基于“太少两感”病机,提出辛温助阳以固本、辛宣透表以祛邪、辛窜通络以消癥三大治法。旨在基于“太少两感”立论,为中医药治疗IgA肾病提供新思路。 展开更多
关键词 IgA肾病 太少两感 四重打击学说 辛味药
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融合双层语义信息的3维人体姿态估计网络 认领 引用
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作者 贾迪 杨柳 +1 位作者 徐驰 何德堃 《机器人》 EI CSCD 北大核心 2026年第1期55-65,共11页
在融合人体姿态的多个可行解时现有方法没有充分学习假设间的依赖关系,易导致融合结果精度不高。为此,提出了一种融合双层语义信息的3维人体姿态估计网络。首先,提出一种层次特征提取模块,对人体关节点的内在结构信息进行建模,提取包含... 在融合人体姿态的多个可行解时现有方法没有充分学习假设间的依赖关系,易导致融合结果精度不高。为此,提出了一种融合双层语义信息的3维人体姿态估计网络。首先,提出一种层次特征提取模块,对人体关节点的内在结构信息进行建模,提取包含不同层次语义信息的假设特征,同时提高关节点位置信息的利用率;其次,为进一步提高网络性能,设计特征细化模块对假设特征进行自我信息传递,以增强关节点间位置的关联性;最后,提出一种层次特征融合模块及关联计算子模块,学习多假设特征间的依赖关系,并根据该关系在假设特征间进行跨假设信息传递,使其融合为一个精准的假设特征,以此充分利用不同假设的不同层次语义信息来获得最终的3维人体姿态估计结果。分别在Human3.6M、MPI-INF-3DHP以及HumanEva-I数据集上验证所提模型的表现,实验结果表明,本方法能提高3维人体姿态估计的准确性,且可有效应对人物自遮挡及姿势复杂等情况。 展开更多
关键词 3维人体姿态估计 多假设融合 层次特征提取 特征细化
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在AI时代塑造更好的自己——从粒子全同性到人类个体差异的教育哲学思考 认领 引用 被引量：1
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作者 张双南 选修“科学方法与美学”全体同学 元宝 《物理与工程》 2026年第3期27-32,共6页
物理世界的基本假设之一是粒子的全同性,这一假设保证了物理规律的简洁性与可预测性。然而,人类社会的本质特征恰恰在于个体的差异性。本文从量子力学中的全同性原理出发,对比自然界的统一性与人类的独特性,批判工业时代标准化教育模式... 物理世界的基本假设之一是粒子的全同性,这一假设保证了物理规律的简洁性与可预测性。然而,人类社会的本质特征恰恰在于个体的差异性。本文从量子力学中的全同性原理出发,对比自然界的统一性与人类的独特性,批判工业时代标准化教育模式的局限性,探讨人工智能时代教育应如何转型。研究认为,AI时代教育的核心目标应从培养“更好的机器”转向塑造“更好的人”,强调独立思考、批判精神以及科学素养与人文情怀的融合。基于“审美两要素”理论,最精彩最美的人生是具有健康的价值观并且表现出独一无二、无可替代特质的人生。 展开更多
关键词 人工智能 全同性假设 个体差异 教育变革 批判性思维 审美两要素
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