摘要： 数字经济是促进我国经济高质量发展的新动力,数字技术在体育全产业链的实施中可以有效提高体育产业发展效率并提高体育产业的智能化,体育产业与数字经济的融合可以促进体育资源的合理配置,更有利于体育产业的跨界融合,更能催生出新模式和新业态,并增强体育企业的竞争力.在数字经济时代,体育企业应抓住体育全产业链发展的机遇,实施数字化战略.

关键词： Hispania   institutions   Latin colonization   Republican era   urban planning  

摘要： La Cabañeta (El Burgo de Ebro, Zaragoza) and La Caridad (Caminreal, Teruel) stand out as exceptional examples of Roman urbanization in Hispania during the Republican period. They are both settlements of colonial typology with origins dating back to the aftermath of the defeat of Numantia by P. Cornelius Scipio Aemilianus around 133/132 BC. According to Appian, this time coincided with the presence of a senatorial commission of decemviri (ἀπὸ τῆς βουλῆς ἄνδρας δέκα), whose aim was to establish the groundwork for pacification and the stable territorial integration of vast regions of Hispania Citerior. This work aims to analyze the available material and institutional evidence from both towns, in order to assess their nature and population, as well as to propose a coherent and plausible historical and legal-administrative framework, which can aid in comprehending and explaining their possible origins, function, and constitutional structures within the context of the military and economic colonization processes promoted by Rome in Italy and Gallia Cisalpina (3rd-2nd centuries BC). © 2024, Universidad Compultense Madrid. All rights reserved.

关键词： 数字化转型   企业全要素生产率   提升效应   平抑效应  

摘要： 深刻把握我国企业数字化转型发展契机，充分释放数字技术与数据资源在提升全要素生产率中的巨大乘数效应已成为新常态下我国企业高质量发展的必由之路。本文以国家权威政策语义体系为基础构建企业数字化转型指标，并将我国上市公司全要素生产率分解为“提升效应”与“平抑效应”，利用动态面板回归模型详细考察了数字化转型影响企业全要素生产率的渠道机制、波动特征以及非线性关系。研究发现，尽管数字化转型与企业全要素生产率之间存在明显的“倒U型”关系，然而当前阶段仍处于能够有效促进企业全要素生产率提升的“红利释放期”；数字化转型对企业全要素生产率变动产生显著“平抑效应”，从而打破了企业全要素生产率的高速增长路径并使其增长速度不可持续；数字化转型通过扩大规模经济与范围经济以及优化管理效率等途径促进了企业全要素生产率水平提升。本文揭示了近年来我国企业全要素生产率增长速度逐渐趋缓甚至接近停滞的原因，通过解析数字化转型对企业全要素生产率的影响路径与作用机制，为企业提质增效、助力向中高端价值链迈进提供了学术价值与政策启示。

关键词： cascaded registration network   ConvNeXt   medical image registration   Multimodal image segmentation   stroke  

摘要： Background: Stroke is one of the leading causes of disability and death worldwide. Ischemic stroke accounts for 75–90% of all stroke incidents. Assessing the size and location of the stroke lesion is crucial for treatment decisions, especially those related to urgent vascular reconstruction surgery. Magnetic resonance imaging (MRI) offers excellent soft tissue contrast and multimodal imaging characteristics, which can reflect changes in the physiological functions of brain soft tissues in patients with ischemic stroke. However, using deep learning (DL) techniques for MRI segmentation of stroke lesions still faces many challenges. On the one hand, single-modal segmentation models cannot effectively integrate multimodal information;on the other hand, there is a semantic content drift between multimodal stroke MRI images, leading to lower accuracy in subsequent multimodal image segmentation. To address these issues, we aimed to propose the stroke unsupervised registration and segmentation (St-RegSeg) framework. Methods: The St-RegSeg framework integrates an unsupervised registration model, ConvNXMorph, and a segmentation model, nnUNet-v2, enabling both registration and segmentation of multimodal MRI images. The St-RegSeg framework was evaluated on the ISLES’22 dataset from three centers. Results: The St-RegSeg framework demonstrated significant improvements in performance metrics and computational efficiency. Compared to advanced normalization tools (ANTs) [symmetric normalization (SyN)] + nnUNet-v2, the St-RegSeg framework improved the Dice similarity coefficient (DSC) by 25.31% in the registration phase, reduced mean squared error (MSE) by 17.36%, increased normalized cross-correlation (NCC) by 16.06%, and enhanced mutual information (MI) by 17.09%. Additionally, in the segmentation phase, it increased the DSC by 0.84%, and the overall inference speed was increased by 40.91 times. Compared to the suboptimal TransMorph + nnUNet-v2, the St-RegSeg framework improved the

摘要： 新质生产力是由技术革命性突破、生产要素创新性配置、产业深度转型升级而催生的当代先进生产力,它以劳动者、劳动资料、劳动对象及其优化组合的质变为基本内涵,以全要素生产率提升为核心标志.

关键词： complete revascularization   culprit-only revascularization   older adults   PCI   STEMI  

摘要： Background: Randomized controlled trials (RCTs) of complete revascularization (CR) versus culprit-only revascularization (COR) in patients with ST-elevation myocardial infarction (STEMI) have shifted the recommendation for CR from class III to class I in the AHA/ACC/SCAI guidelines, but it remains unclear if the benefit of CR over COR extends to older adults, who have greater bleeding risk, comorbidity burden, and complexity of lesions. We performed a meta-analysis to place the results of the previous RCTs in the context of the recently published FIRE trial and the subgroup analysis of the COMPLETE trial in adults >= 75 years old. Methods;We searched the literature from inception to October 21, 2023. RCTs of CR versus COR in STEMI were selected if it reported results for older adults, defined as either age > 65 years or > 75 years. Integrated hazard ratios (HRs) were calculated using random effects models. The primary outcome was major adverse cardiovascular events (MACE). Secondary outcomes were major bleeding and contrast-associated acute kidney injury (CA-AKI). Results: In this meta-analysis of 5 RCTs including 3513 older adults, CR was associated with a lower hazard of MACE than COR (HR 0.60, 95% CI 0.37-0.99, p = 0.047). Sensitivity analysis including trials that defined older adults as age > 65 years resulted in a lower hazard of MACE with CR versus COR, but not in trials that defined older adults as age > 75 years. There was no difference in the hazard of major bleeding or CA-AKI between CR and COR. Conclusions: In this largest meta-analysis to date investigating CR compared with COR in older adults with STEMI, CR was associated with reduced MACE without a concomitant increase in major bleeding or CA-AKI compared with COR. These results can help cardiologists and geriatricians involved in shared decision-making with patients and caregivers when contemplating whether to pursue CR in older adults.

摘要： 北京市中小企业主体数量多,成长性好,科技含量高,专精特新表现突出.截至2024年6月,北京市共有在营中小微企业198.5万家,今年以来日均新设企业640余家.北京已培育创新型中小企业12530家,市级专精特新企业8083家,国家级"小巨人"企业795家,专精特新"小巨人"数量连续两年位于全国各城市之首.中小企业的生存与发展在促进北京经济持续增长、稳定就业、推动创新,以及改善民生福祉等方面具有不可替代的重要作用.