论产业纵向集聚与财政横向均衡的区域协调互动机制

本文认为中国已形成东部制造业与服务业带和中西部农业与矿业带状、点状分布的纵向产业集聚格局,这与其资源禀赋和生产力布局是相适应的;但这种产业集聚还处在高集聚、低专业、强政区、弱市场的低端时期,为促进产业集聚专业化发展和解决其财富不均的问题,必须重构区域协调互动的发展机制。主张对东中西纵向区域合纵连横,形成沿海帮助内地共同发展,中西部农业、矿业与生态贡献区和东部制造业及服务业反馈区协调互动的泛珠三角、泛长三角和大环渤海财政横向均衡区,以区域一体化促进统一市场的形成,主要依靠市场效应来推动产业集聚走向高端专业化。     

中国参与全球价值链分工的测度及对就业的影响研究

基于对外经济贸易大学全球价值链数据库（UIBE GVC Index）,本文首先从前向与后向联系的角度对2000—2014年中国整体及不同类型行业参与全球价值链（GVC）的程度、生产长度和位置进行测算,关注金融危机尤其是2011年后中国参与GVC分工的新特征;在此基础上,利用计量经济学方法分行业研究参与GVC分工对就业的影响。研究结果表明,参与GVC分工方面：中国整体行业后向参与度远高于前向参与度,两者均呈现“M”型演变趋势并于2012年之后下降;整体行业参与GVC分工的位置居于下游,呈“N”型变动趋势并在2012年后回升;制造业GVC参与度更深,而服务业GVC分工位置更高;高技术行业的GVC参与度和位置都高于中低技术行业,光电设备等高技术行业前向参与度有所提高。对就业的影响方面：不同行业参与GVC分工对就业的影响存在显著差异;整体行业位置指数尤其是后向参与度的提高会对就业产生负面影响,一次跨境的简单GVC对就业的正向拉动作用最大,其次是前向参与度;与整体行业不同,相对于服务业与中低技术行业,制造业与高技术行业位置的提高将促进就业;服务业前向GVC复杂生产长度以及整体与细分行业的简单GVC都与就业正相关。根据研究结论,本文进一步提出实现中国GVC升级与同步促进就业的对策建议。     

复杂条件下综采工作面调斜回采技术研究与应用

本文从旋转调面开采的理论分析入手,巷道掘进之前超前谋划,将旋转角度由30°改为两次15°旋转,工作面推采过程中有针对性的采取控制措施,顺利完成倾斜煤层旋转开采,取得较好的技术和经济效益。     

服务外包与产业链长度：来自中国的经验证据*

本文参考Antrs et al（2012）方法,利用中国1997年、2002年、2007年、2012年和2017年投入产出表测度30个省份17个细分行业的产业链长度,并在此基础上分析服务外包对延伸产业链长度的作用。实证结果表明：第一,从整体上看,服务外包对我国产业链长度攀升具有显著促进作用,服务外包每提高10%,可以促进我国产业链长度提升062%。第二,从细分类型的服务外包看,交通仓储外包对产业链长度延伸的促进作用最大。第三,分地区研究发现,服务外包对中部地区产业链长度提升最大,其次是西部地区,东部地区最小。第四,分行业后发现,服务外包对制造业和服务业产业链长度均有提升作用,但是对服务业促进作用是制造业的近2.7倍。     

基于“共享式增长”的京津冀商贸物流产业新体系构建

基于\"共享式增长\"理念,运用投入产出模型及APL模型优化了京津冀商贸物流产业关联机制,并据此构建了京津冀商贸物流产业新体系。研究发现:北京的商贸物流业与其服务业和技术产业的关联密切,天津的商贸物流业与其制造业和金融业的联动发展较好,河北的商贸物流业与其制造业、采掘业和农林牧渔业的关联效应显著;北京的商贸物流发展趋于饱和,河北商贸物流业的产业关联结构相比天津更加均衡,其产业波及效应提升也更加明显。提出建议:为实现京津冀的资源与发展成果共享,京津在满足本地商贸物流需求的同时,应将部分商贸物流企业转移至河北,同时给予相关技术、资金支持;河北应承担起京津冀的主要商贸物流建设,完善商贸物流产业关联机制,加快发展工业品、采选品和农产品等专项商贸物流,保障对京津生产生活原料的供给。     

沪通铁路跨江通道建设方案探讨

随着经济的快速发展,长江口地区必将建造规模宏大的综合交通“立交桥”,形成连接南北、辐射东西的现代化立体交通网络。目前在各种运输方式中,惟一缺失并亟待打通的是铁路跨江通道。建设高等级、多线路的沪通铁路跨江通道,能够实现长三角现代化轨道交通南北联网,贯通沿江、沿海快速客运铁路,构建长江口都市圈,开辟长三角巨大都市带发展新天地。     

Understanding road traffic risks from the street hawker’s perspective

This study explored street hawkers’ lived experiences and risks in traffic using the phenomenological case study design. Data from 24 hawkers at three hawking spots and field observations form the basis of our study. A stratified purposeful sampling scheme was employed to ensure a balance of gender and age. Thematic data analytic strategy was employed in the data analysis. We found that participants’ traffic incidents were mainly self-induced, attributable to their negligence on the road, indiscriminate road crossing and car-following behaviour. Our results suggest a perceived relationship between socio-demographic characteristics and personal traffic accident encounters. Also, we noted that the ability to manage traffic risk seem to influence hawkers’ traffic risk perceptions, with gender and age as possible mediators. As this study is exploratory, we recommend further scientific enquiry to explain these issues and to provide the basis for appropriate interventions to manage the road safety implications of this activity.     

Medical costs in patients with heart failure after acute heart failure events: one-year follow-up study

Aims: This study investigated annual medical costs using real-world data focusing on acute heart failure.

Methods: The data were retrospectively collected from six tertiary hospitals in South Korea. Overall, 330 patients who were hospitalized for acute heart failure between January 2011 and July 2012 were selected. Data were collected on their follow-up medical visits for 1 year, including medical costs incurred toward treatment. Those who died within the observational period or who had no records of follow-up visits were excluded. Annual per patient medical costs were estimated according to the type of medical services, and factors contributing to the costs using Gamma Generalized Linear Models (GLM) with log link were analyzed.

Results: On average, total annual medical costs for each patient were USD 6,199 (±9,675), with hospitalization accounting for 95% of the total expenses. Hospitalization cost USD 5,904 (±9,666) per patient. Those who are re-admitted have 88.5% higher medical expenditure than those who have not been re-admitted in 1 year, and patients using intensive care units have 19.6% higher expenditure than those who do not. When the number of hospital days increased by 1?day, medical expenses increased by 6.7%.

Limitations: Outpatient drug costs were not included. There is a possibility that medical expenses for AHF may have been under-estimated.

Conclusion: It was found that hospitalization resulted in substantial costs for treatment of heart failure in South Korea, especially in patients with an acute heart failure event. Prevention strategies and appropriate management programs that would reduce both frequency of hospitalization and length of stay for patients with the underlying risk of heart failure are needed.     

全封闭挂篮施工技术在高铁中的应用

全封闭挂篮,主要用于高墩、跨线路、跨河道且上部结构为变截面连续梁结构类型的桥梁施工工艺。在施工中,这种工艺可以节省人力、物力及财力,有效的为项目节约成本。结合我公司承建的京石客运专线滹沱河特大桥跨石太高速连续梁对全封闭挂篮施工技术作出归纳和总结。     

各地区居民收入基尼系数计算及其非参数计量模型分析

本文利用非等分组基尼系数公式,首次较为完整地计算出全国21个省、市以及自治区的1995~2004年城镇居民、农村居民和城乡居民基尼系数。在这一基础上,利用非参数计量经济模型中的分布密度函数估计方法,分析了1995~2004年各地区城镇、农村和城乡居民基尼系数变化特征。以居民平均收入水平与城乡居民收入平均基尼系数对各地区进行判别分析,发现以收入水平与分配公平程度为标准的判定基本上同我国东中西三大地区的划分一致。