东江水库调节对其下游各级水库淹没的影响

河流梯级开发中，上游有龙头水库时，对下游调节作用较大。如湖南省东江水库系一大型多年调节水库，调节系数为１．３。考虑利用该库空闲库容容纳洪水，减少下泄流量，与区间洪水组合后，下游各梯级设计洪水在洪水标准低于３０年一遇时，其值比原设计小，相应回水降低，淹没损失减少，以东江下游乔口－遥田７个梯级为例，其中乔口，石面担，程江口，永兴，上堡等５梯级减少的淹没损失是原各梯级淹没损失的７８．７２％，经济效益显著     

气相色谱-质谱-负化学电离源法测定茶叶中氟乐灵、三唑酮和溴丙磷的残留

采用有机溶剂液液萃取的方式,以气相色谱-质谱联用仪负化学电离源法同时检测茶叶中氟乐灵、三唑酮和溴丙磷的残留量。茶叶加水浸泡后用丙酮：正己烷=1：1（V/V）的混合溶液高速均质提取,TPT柱净化后,用气相色谱-质谱联用仪进行测定和确认,外标法定量。该方法对茶叶中氟乐灵、三唑酮、溴丙磷的定量限均为0.01 mg/kg,方法在0.01-0.2mg/kg质量浓度范围内具有良好的线性关系。     

Complicated firms

We exploit a novel setting in which the same piece of information affects two sets of firms: one set of firms requires straightforward processing to update prices, while the other set requires more complicated analyses to incorporate the same piece of information into prices. We document substantial return predictability from the set of easy-to-analyze firms to their more complicated peers. Specifically, a simple portfolio strategy that takes advantage of this straightforward vs. complicated information processing classification yields returns of 118 basis points per month before transaction costs. Consistent with processing complexity driving the return relation, we further show that the more complicated the firm, the more pronounced the return predictability. In addition, we find that sell-side analysts are subject to these same information processing constraints, as their forecast revisions of easy-to-analyze firms predict their future revisions of more complicated firms.     

具有自营平台的制造商与零售商的竞争与合作模型

本文研究了由1个制造商和1个零售商组成的供应链中的竞争与合作定价问题,其中制造商具有平台直销渠道。本文建立了竞争下的Stackelberg博弈模型,并分析了解的唯一性和合理性,然后给出合作定价模型和各渠道的定价策略,结果表明制造商和零售商最优策略是降低线下渠道销售价格而线上平台销售价格不变。通过对比表明供应链合作所增加的收益等于非合作下零售商的收益,并证明了顾客对线下渠道购买偏好越高,合作所增加的收益越大。进一步地,分析了在合作的情况下制造商是否放弃通过平台直销渠道销售商品的问题,并给出双渠道下供应链总利润比单渠道下总利润高的判定条件。最后给出一个算例,对所获得的结论进行验证和补充。     

东亚货币一体化博弈分析

东亚发展中国家与地区如何选择汇率制度一直是个颇有争议的话题。在“欧元”单一货币区成功实施的背景下,寻求货币一体化便成为东亚各国与地区关注的焦点。实际上,东亚货币一体化就是各参与方根据其参与的成本和收益,权衡利弊得失的决策博弈过程,该过程具有两阶段博弈的特征。     

Perioperative inhaled corticosteroids treatment is associated with decreased length-of-stay and direct medical costs in high-respiratory-risk surgeries

Abstract

Aims: To examine the impact of perioperative inhaled corticosteroids (ICS) on length-of-stay (LOS) and costs among patients receiving high-respiratory-risk surgeries.

Methods: Adult patients who underwent high-respiratory-risk surgeries in 2015 were identified in the Tianjin Urban Employee Basic Medical Insurance database. Patients were grouped into ICS or non-ICS cohorts according to whether they received ICS during the perioperative period of the index hospitalization. Propensity Score Matching was performed to create matched pairs between two cohorts. The impact of perioperative ICS on LOS and direct medical costs was estimated by negative binomial model and generalized liner model.

Results: Eight hundred and twenty-one hospital stays with high-respiratory-risk were selected in the ICS cohort and another 821 stays in the non-ICS cohort were matched. The mean LOS was 13.0 (±0.3) days in the ICS cohort, which was significantly lower than the matched non-ICS cohort. Patients with thorax and ear-nose-throat surgeries had a significant decrease in LOS in the ICS cohort compared to the non-ICS cohort, with a mean decrease of 5.5 and 1.1?days, respectively. In adjusted analyses, perioperative ICS treatment was associated with shorter LOS, lower total, and respiratory-related costs (reductions of 10.1%, 7%, and 5.3%, respectively) after controlling for demographic, clinical, and hospital characteristics.

Limitations: Some respiratory risk factors such as living behavior and environment were unable to be captured and respiratory-related costs might be underestimated, limited by claim data. Lastly, caution should be taken when generalizing the results to other populations, as only patients with moderate-to-severe surgeries on the thorax and above were selected in this study.

Conclusions: Perioperative ICS treatment was associated with decreased LOS and lower costs for patients undergoing high-respiratory-risk surgeries in China.     

中国GST地区收入与其负担的差异研究

文章基于我国“营改增”改革削弱了地方政府税收征管权进而引起收入分配争议的现实背景,运用投入产出等分析方法计算出中国各地区GST的负担额,并引入地区税收负担度指标对各地区GST收入及其负担的差异程度与特征进行了系统描述.研究发现:(1)各地区GST负担度差异较大;(2)GST负担度整体上呈现“西高东低”的特点,增值税是造成这一状况的主导因素;(3)消费税负担度则呈现“东高西低”的特征,这符合公平原则.各地区GST负担度差异较大的原因包括税负转嫁、原产地原则、转让定价、地区产业不均衡和汇总纳税等.因此,为降低中国地区间GST收入与负担的差异程度,应当建立以目的地原则为主导的GST分配机制和有助于协调收入及其负担的转移支付制度,并完善跨区域经营管理体制等.     

海外高层次人才创新创业政策研究:政策工具与创新创业过程视角

在全球人才流动加速的知识经济时代，中央和地方政府相继颁布了一系列鼓励海外高层次人才创新创业的政策。通过构建政策工具—创新创业过程二维框架，以浙江省“九五”至“十三五”期间颁布的海外人才政策为研究对象，采用内容分析法和扎根理论编码进行统计分析。研究发现：浙江省海外高层次人才政策数量增长迅速，从“十五”至“十三五”开局之年政策数量呈明显上升趋势;政策发文主体较多，但协调性较弱，浙江省财政厅是重要联合发文主体;从政策工具维度而言，供给类和环境类政策过溢、需求类政策偏少;创新创业准备阶段缺乏环境型政策，起步阶段缺乏供给型政策，发展阶段缺乏需求型政策。最后，提出优化海外高层次人才政策的对策建议。     

建立高校二级财务管理运行机制的思考

随着我国高等教育改革的逐步深化,高校办学规模急剧扩大,财务管理内涵日益丰富,高校原有的财务管理体制已经无法适应新的办学要求,建立高校二级财务制度,规范二级财务管理已迫在眉睫。本文从分析构建高校二级财务管理制度必要性入手,提出了建立高校二级财务管理运行机制的思路,并对二级财务管理的绩效评价指标进行了简单设计。