目的:探讨经阴道三维超声成像技术在宫角妊娠与输卵管间质部妊娠诊断及鉴别诊断中的价值。方法:回溯性收集2020年9月—2022年10月南京医科大学附属妇产医院临床疑诊为宫角妊娠或输卵管间质部妊娠的91例患者的经阴道二维和三维超声图像,...目的:探讨经阴道三维超声成像技术在宫角妊娠与输卵管间质部妊娠诊断及鉴别诊断中的价值。方法:回溯性收集2020年9月—2022年10月南京医科大学附属妇产医院临床疑诊为宫角妊娠或输卵管间质部妊娠的91例患者的经阴道二维和三维超声图像,分析经阴道三维超声中宫角妊娠和输卵管间质部妊娠的图像特征,以手术及随访结果为金标准,对比两种超声的诊断准确率。结果:经阴道三维超声诊断准确率高于经阴道二维超声[94.51%(86/91)vs 84.62%(77/91),χ^(2)=15.05,P<0.05]。经阴道三维超声与手术及随访结果诊断一致性优于经阴道二维超声(Kappa=0.899 vs Kappa=0.687,P<0.05)。宫角妊娠三维冠状面特征:两宫角不对称,一侧宫角膨大;孕囊或包块均与宫腔内膜相连;宫底轮廓对称或一侧膨隆。输卵管间质部妊娠三维冠状面特征:两宫角对称;孕囊或包块基本不与宫角内膜相连;孕囊或包块自一侧宫底向轮廓外凸起。宫角妊娠孕囊或包块周边肌层完整,平均厚度明显厚于输卵管间质部孕囊或包块周边肌层[(5.72±1.08)mm vs(1.73±0.84)mm,P<0.001]。结论:经阴道三维超声检查技术诊断准确率高,其冠状面声图像特征在鉴别宫角妊娠及输卵管间质部妊娠中有较高的应用价值。展开更多
年来,中国汽车制造业在持续发展中取得显著进步,然而,受国家政策调整、石油价格波动、材料成本上升以及激烈的市场竞争等多重市场因素的影响,该行业正面临前所未有的挑战和压力。在这种背景下,构建一套科学、系统的财务风险评价体系对...年来,中国汽车制造业在持续发展中取得显著进步,然而,受国家政策调整、石油价格波动、材料成本上升以及激烈的市场竞争等多重市场因素的影响,该行业正面临前所未有的挑战和压力。在这种背景下,构建一套科学、系统的财务风险评价体系对于汽车制造业的稳健发展显得尤为重要。本文以小鹏汽车为例,深入研究其财务风险管理策略。研究过程中,本文运用皮尔逊相关性分析法和熵值法相结合的方法,对关键财务指标进行精准筛选和权重分配。在此基础上,通过改进后的功效系数法,对小鹏汽车的财务状况进行了全面、客观的评价,并得出了其财务评价得分。基于上述研究结果,本文有针对性地提出了针对小鹏汽车财务风险管理的具体保障措施,旨在帮助该企业有效应对市场变化,降低财务风险,实现可持续发展。In recent years, China’s automobile manufacturing industry has made remarkable progress in its continuous development. However, influenced by multiple market factors such as national policy adjustments, fluctuations in oil prices, rising material costs, and fierce market competition, the in-dustry is facing unprecedented challenges and pressures. Against this backdrop, establishing a scientific and systematic financial risk evaluation system becomes particularly crucial for the steady development of the automobile manufacturing industry. Taking Xpeng Motors as an example, this paper delves into its financial risk management strategies. During the research process, this paper adopts a combined approach of Pearson correlation analysis and entropy method to precisely screen and assign weights to key financial indicators. Based on this, an improved efficacy coefficient method is employed to conduct a comprehensive and objective evaluation of Xpeng Motors’ finan-cial condition, resulting in a financial evaluation score. Drawing upon the above findings, this paper proposes specific safeguard measures tailored to Xpeng Motors’ financial risk management, aiming to assist the enterprise in effectively responding to market changes, reducing financial risks, and achieving sustainable development.展开更多
文摘目的:探讨经阴道三维超声成像技术在宫角妊娠与输卵管间质部妊娠诊断及鉴别诊断中的价值。方法:回溯性收集2020年9月—2022年10月南京医科大学附属妇产医院临床疑诊为宫角妊娠或输卵管间质部妊娠的91例患者的经阴道二维和三维超声图像,分析经阴道三维超声中宫角妊娠和输卵管间质部妊娠的图像特征,以手术及随访结果为金标准,对比两种超声的诊断准确率。结果:经阴道三维超声诊断准确率高于经阴道二维超声[94.51%(86/91)vs 84.62%(77/91),χ^(2)=15.05,P<0.05]。经阴道三维超声与手术及随访结果诊断一致性优于经阴道二维超声(Kappa=0.899 vs Kappa=0.687,P<0.05)。宫角妊娠三维冠状面特征:两宫角不对称,一侧宫角膨大;孕囊或包块均与宫腔内膜相连;宫底轮廓对称或一侧膨隆。输卵管间质部妊娠三维冠状面特征:两宫角对称;孕囊或包块基本不与宫角内膜相连;孕囊或包块自一侧宫底向轮廓外凸起。宫角妊娠孕囊或包块周边肌层完整,平均厚度明显厚于输卵管间质部孕囊或包块周边肌层[(5.72±1.08)mm vs(1.73±0.84)mm,P<0.001]。结论:经阴道三维超声检查技术诊断准确率高,其冠状面声图像特征在鉴别宫角妊娠及输卵管间质部妊娠中有较高的应用价值。
文摘年来,中国汽车制造业在持续发展中取得显著进步,然而,受国家政策调整、石油价格波动、材料成本上升以及激烈的市场竞争等多重市场因素的影响,该行业正面临前所未有的挑战和压力。在这种背景下,构建一套科学、系统的财务风险评价体系对于汽车制造业的稳健发展显得尤为重要。本文以小鹏汽车为例,深入研究其财务风险管理策略。研究过程中,本文运用皮尔逊相关性分析法和熵值法相结合的方法,对关键财务指标进行精准筛选和权重分配。在此基础上,通过改进后的功效系数法,对小鹏汽车的财务状况进行了全面、客观的评价,并得出了其财务评价得分。基于上述研究结果,本文有针对性地提出了针对小鹏汽车财务风险管理的具体保障措施,旨在帮助该企业有效应对市场变化,降低财务风险,实现可持续发展。In recent years, China’s automobile manufacturing industry has made remarkable progress in its continuous development. However, influenced by multiple market factors such as national policy adjustments, fluctuations in oil prices, rising material costs, and fierce market competition, the in-dustry is facing unprecedented challenges and pressures. Against this backdrop, establishing a scientific and systematic financial risk evaluation system becomes particularly crucial for the steady development of the automobile manufacturing industry. Taking Xpeng Motors as an example, this paper delves into its financial risk management strategies. During the research process, this paper adopts a combined approach of Pearson correlation analysis and entropy method to precisely screen and assign weights to key financial indicators. Based on this, an improved efficacy coefficient method is employed to conduct a comprehensive and objective evaluation of Xpeng Motors’ finan-cial condition, resulting in a financial evaluation score. Drawing upon the above findings, this paper proposes specific safeguard measures tailored to Xpeng Motors’ financial risk management, aiming to assist the enterprise in effectively responding to market changes, reducing financial risks, and achieving sustainable development.
