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从城市原水系统调度的理论研究、软件开发和工程实践三方面,回顾了国内外城市原水系统调度的研究进展;探讨了原水调度与水资源配置和水库群调度的区别,分析了模拟调度和优化调度的优势和不足,归纳了智能调度的技术要点并总结其在原水公司中的实际应用;介绍了常用原水调度仿真软件的计算机制和特点,分析了智能调度软件开发中决策支持系统的应用途径;通过国内外规模各异的城市原水系统调度工程案例分析了原水调度在合理利用水资源、提高供水效率、应对突发事件等方面的实际价值。指出未来的研究方向包括:加强城市原水系统智能调度理论研究,构建适用面广、可操作性强的城市原水智能调度系统;提高城市原水系统调度目标的预测精度与时效性;建立科学的城市原水系统应急调度预案库;形成满足生态与发展需求的城市原水系统调度评价体系。 相似文献
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流域是生态系统的基本单元,也是生态产品价值实现的重要载体。以湖北省黄冈市浠水流域为对象,在系统分析流域特点和生态产品价值实现基本条件的基础上,提出进一步完善流域生态产品价值实现机制,必须坚持以生态环境保护为基础前提、以促进生态产业化经营为核心抓手、以实现保护与发展良性循环为核心目标,并结合浠水流域的特点,围绕健全流域生态环境协同管护模式、建立生态产品确权与权属交易机制、创新拓展生态产品产业链和价值链、改革生态产品及其价值交易市场、健全共建共享的生态产品收益分配制度等5个方面,提出了健全生态产品价值实现机制的措施建议,也可为其他流域提供参考和借鉴。 相似文献
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本文利用近几年1:5万区调资料,论述了燕山西段怀来地区青白口纪井儿峪组的岩性特征和沉积环境、古生物特征、微量元素特征及接触关系。通过区域地层对比,探讨了井儿峪期燕山地区古地理面貌。指出了本区井儿峪组发现的重要意义。 相似文献
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Mengting Liao Qin Jiang Huabin Hu Jiaqi Han Longjiang She Linli Yao 《Journal of medical economics》2019,22(6):584-592
AbstractObjective: To estimate the cost-effectiveness of utidelone plus capecitabine therapy compared to capecitabine alone in patients with metastatic breast cancer (MBC) resistant to anthracyclines and taxanes treatment in the Chinese context and provide a reference for the marketing of utidelone in China.Methods: A Markov model was developed based on the NCT02253459 clinical trial to simulate the clinical course of patients with metastatic breast cancer who had received taxanes and anthracycline therapy. The quality-adjusted life years (QALYs) and Incremental Cost Effectiveness Ratio (ICER) were then analyzed to evaluate the benefits. Two-parametric Weibull distribution was conducted to fit PFS and OS curves by using R. Sensitivity analyses were performed to evaluate the stability of the model designed.Results: The addition of utidelone increased the cost and QALYs by $13,370.25 and 0.1961, respectively, resulting in an increased ICER of $68,180.78 per QALY. The most sensitive influential parameter on ICER was the price of utidelone. At the threshold of willingness-to-pay (WTP) of $24,380 (3 per capita GDP of China), the cost of utidelone per 30?mg of less than $18.5, $33.7, and greater than $48.8 resulted in a 100%, 50%, and 0% possibility of cost-effectiveness, respectively. The addition of utidelone was not cost-effective when it was $115.4 per 30?mg—the price of its analog paclitaxel. In consideration of varied economics levels across China, cost-effectiveness could be achieved with the price of utidelone ranging from $5.2 to $35.9.Limitations: The survival curves extended beyond the follow-up time horizon, of which data were generated not from the real analyses but from our established two-parameter Weibull survival model.Conclusion: It is recommended that the price of utidelone would be less than $18.5 per 30?mg in order to obtain cost-effectiveness for metastatic breast cancer patients resistant to anthracyclines and taxanes treatment in China. 相似文献
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谈现代化质量管理与企业管理标准化 总被引:1,自引:0,他引:1
"ISO9000是魔鬼的锁链"这是众多搞形式主义企业心中的共识;一个世界管理科学提炼的现代管理标准化缘何应用诚信这么低,一个最直接的原因是实施过程中混淆了质量管理现代化与企业实际质量管理标准化的关系.管理科学现代化也和自然科学一样,发展速度日新月异;然而现代化的管理科学要变成企业的实际标准化管理还有一个过程.对企业如何把质量管理现代化科学变成企业质量管理标准化的过程进行了描述. 相似文献
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在我国社会转型、体制转轨的背景下,由于社会保障制度的建立与改革滞后,弱势就业群体的范围和数量不断扩大,他们与其他群体之间的差距加大,其社会心理动荡强烈,日益被边缘化。因此,研究弱势就业群体的就业与再就业问题具有十分重要的现实意义。 相似文献