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新技术支持下的城市公园服务效能提升方法建构
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作者 张孝贤 李梓豪 +2 位作者 赵艳香 曾亚婷 王腾 《景观设计学(中英文)》 2025年第2期64-81,共18页
有效提升公园服务效能是推进公园城市建设的重要途径。然而,现有公园服务效能研究中存在评估对象与管理需求错位、从评估到诊断建议的精准延伸不足、研究成果时效性与持续性较差等问题,无法对公园管理者的服务效能提升决策提供足够支持... 有效提升公园服务效能是推进公园城市建设的重要途径。然而,现有公园服务效能研究中存在评估对象与管理需求错位、从评估到诊断建议的精准延伸不足、研究成果时效性与持续性较差等问题,无法对公园管理者的服务效能提升决策提供足够支持。本研究从全工作流程出发,提出新技术支持下的公园服务效能“评估-诊断-决策”方法:首先,利用多源数据拓展公园服务效能的感知维度,结合智能算法支撑效能指标评价;其次,构建知识图谱提供精准诊断建议;最后,通过模板与智能技术自动生成报告,并引入大语言模型支持下的问答查询,从而精准提升公园服务效能的评估、诊断和决策能力。文章以北京市公园服务效能评估相关工作为实证案例,验证了本方法的良好实际应用效果,可以为城市公园管理服务优化提供新的视角和可操作工具。 展开更多
关键词 公园服务效能 公园管理 管理决策 多源数据 知识图谱 大语言模型
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Utilizing mesenteric near-infrared reflectance spectroscopy to predict gastrointestinal complication risks and optimize feeding strategies in infants undergoing cardiac surgery
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作者 Wenpeng Xie Yinan Liu +2 位作者 yating zeng Yirong Zheng Qiang Chen 《Pediatric Investigation》 CSCD 2024年第4期287-294,共8页
Importance: Gastrointestinal complications are common perioperative complications in children with congenital heart disease (CHD), and as near-infrared reflectance spectroscopy (NIRS) provides a non-invasive, real-tim... Importance: Gastrointestinal complications are common perioperative complications in children with congenital heart disease (CHD), and as near-infrared reflectance spectroscopy (NIRS) provides a non-invasive, real-time monitoring of regional tissue oxygenation, we envisioned monitoring and preventing the development of gastrointestinal complications through the use of NIRS. Objective: To assess the utility of NIRS for predicting gastrointestinal complication risks and determining optimal initial feeding times in infants post-cardiac surgery. Methods: This retrospective study included 65 infants with CHD treated at our hospital from January 2021 to January 2022. We collected and analyzed data on mesenteric regional venous and arterial oxygen saturation, arterial partial pressure of oxygen, first lactic acid levels, timing of initial enteral feeding, and incidence of gastrointestinal complications. Results: Out of 65, 61 infants were eligible for inclusion (four cases were excluded). Infants with gastrointestinal complications post-surgery showed significantly lower mesenteric NIRS values and earlier feeding times compared to those without complications (55.5 ± 3.3 vs. 59.6 ± 6.3, P = 0.029;and 59.8 ± 6.7 vs. 66.9 ± 5.7, P = 0.002, respectively). Multivariable binary logistic regression analysis revealed that mesenteric NIRS readings at the time of initial feeding independently predicted gastrointestinal complications (odds ratio, 0.802;95% confidence interval, 0.693–0.928;P = 0.003). receiver operating characteristic curve analysis indicated a significant predictive value of mesenteric NIRS at initial feeding time (area under the curve: 0.799), with a suggested critical threshold of 63.1% (93% sensitivity, 70% specificity). Pearson correlation test confirmed a significant association between mesenteric NIRS at initial feeding time and the establishment of enteral feeding. Interpretation: Mesenteric NIRS measurements at the time of initial feeding provide a reliable method for identifying infants at risk of gastrointestinal complications following cardiac surgery and can inform decisions regarding the timing of initial postoperative feeding. 展开更多
关键词 Congenital cardiac disease Mesenteric NIRS Gastrointestinal complications Initial feeding
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