对外商投资控股的认识及政策选择

认为应按“生产力标准”看待外商投资控股 ,制定明确的外商控股的产业政策 ,引导外商控股行为和国有经济的发展方向 ,保持国有经济在国民经济关键领域和重要行业的支配地位     

国际贸易中心指标体系构建及对上海国际贸易竞争力的评估和建议

随着长三角区域、亚洲区域市场一体化加快推进,上海国际贸易中心建设可充分利用长三角区域枢纽区位优势,从提升总部功能发力,从点上政策突破到面上统筹,对外汇、人才、贸易便利化、数据跨境流动进行系统安排,集聚跨国公司总部;从结算、采购、营销、物流、分拨等功能层面进行分类施策,推动贸易主体营运功能衍生;发挥金融、保险、咨询等专业服务优势,使上海成为长三角区域、国内企业国际营销网络的开拓通道.     

正确发挥政府在再分配中的作用——构建和谐福建分配机制研究

本文充分肯定了福建省财政分配体制改革所取得的巨大成就,认真分析了分配体制改革中存在的主要问题及其原因.在此基础上,作者提出了进一步改革完善政府财政分配体制机制和正确发挥政府在再分配中作用的政策建议.     

Accelerating Metropolis-within-Gibbs sampler with localized computations of differential equations

Statistics and Computing - Inverse problem is ubiquitous in science and engineering, and Bayesian methodologies are often used to infer the underlying parameters. For high-dimensional...     

A permutation-based Bayesian approach for inverse covariance estimation

Abstract

Covariance estimation and selection for multivariate datasets in a high-dimensional regime is a fundamental problem in modern statistics. Gaussian graphical models are a popular class of models used for this purpose. Current Bayesian methods for inverse covariance matrix estimation under Gaussian graphical models require the underlying graph and hence the ordering of variables to be known. However, in practice, such information on the true underlying model is often unavailable. We therefore propose a novel permutation-based Bayesian approach to tackle the unknown variable ordering issue. In particular, we utilize multiple maximum a posteriori estimates under the DAG-Wishart prior for each permutation, and subsequently construct the final estimate of the inverse covariance matrix. The proposed estimator has smaller variability and yields order-invariant property. We establish posterior convergence rates under mild assumptions and illustrate that our method outperforms existing approaches in estimating the inverse covariance matrices via simulation studies.     

Understanding the Role of Nonprofit Organizations in the Provision of Social Services in China: An Exploratory Study

VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - This article examines the role of nonprofit organizations in government-nonprofit collaboration in the provision of social...     

Recalibration of the Grunow–Finke Assessment Tool to Improve Performance in Detecting Unnatural Epidemics

Successful identification of unnatural epidemics relies on a sensitive risk assessment tool designed for the differentiation between unnatural and natural epidemics. The Grunow–Finke tool (GFT), which has been the most widely used, however, has low sensitivity in such differentiation. We aimed to recalibrate the GFT and improve the performance in detection of unnatural epidemics. The comparator was the original GFT and its application in 11 historical outbreaks, including eight confirmed unnatural outbreaks and three natural outbreaks. Three steps were involved: (i) removing criteria, (ii) changing weighting factors, and (iii) adding and refining criteria. We created a series of alternative models to examine the changes on the parameter likelihood of unnatural outbreaks until we found a model that correctly identified all the unnatural outbreaks and natural ones. Finally, the recalibrated GFT was tested and validated with data from an unnatural and natural outbreak, respectively. A total of 238 models were tested. Through the removal of criteria, increasing or decreasing weighting factors of other criteria, adding a new criterion titled “special insights,” and setting a new threshold for likelihood, we increased the sensitivity of the GFT from 38% to 100%, and retained the specificity at 100% in detecting unnatural epidemics. Using test data from an unnatural and a natural outbreak, the recalibrated GFT correctly classified their etiology. The recalibrated GFT could be integrated into routine outbreak investigation by public health institutions and agencies responsible for biosecurity.     

人口、经济与资源环境系统耦合演进问题分析——以宁夏回族自治区为例

人口、经济与资源环境系统间耦合协调发展是实现区域社会经济高质量可持续发展的首要前提和主要途径。宁夏人口、经济与资源环境系统的耦合演进轨迹表明:宁夏人口系统和经济系统呈稳中向好的发展趋势,资源环境系统呈"四波段"的变化趋势;人口、经济、资源环境系统间相互作用的强度逐步增强,由失调状态逐步向更高层次的协调状态发展;综合发展水平类型经历了资环主导经济滞后型、人口主导资环滞后型、经济主导资环滞后型。     

促销模式下基于纳什谈判的线上旅行商与线下旅行社定价策略研究

本文针对O2O模式下线下旅行社（TO）与线上旅行商（OTA）在采取促销手段时的定价策略进行研究。首先根据促销成本的承担对象划分出由TO单独承担促销成本和TO与OTA共同承担促销成本这两种促销模式，然后通过纳什谈判确定销售佣金的定价策略，研究TO与OTA的谈判能力不同且双方承担的促销成本比例变化的情况下旅游产品和促销努力水平的定价策略。结果表明：当TO的谈判能力越大时，TO所需付出的销售佣金越小，促销的努力水平越高，销售价格越低，且TO的利润越大；而且，OTA的利润随着TO谈判能力的提高而下降。此外，通过对两种促销模式下TO的利润、OTA的利润以及整体利润的对比分析得出，应依据TO与OTA共同承担促销的这种促销模式下TO承担促销的比例来确定采用的促销模式。