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1.
我国粮食产后损失情况概述   总被引:1,自引:0,他引:1  
本文系统分析了粮食产后各环节损失的原因及损失量,针对相关粮食损失原因及状况,提出了减少粮食产后损失的措施及建议,以期为我国实现节粮减损提供支持。  相似文献   
2.
Aims: Depression is the most frequent comorbidity reported among patients with rheumatoid arthritis (RA). Comorbid depression negatively impacts RA patients’ health-related quality-of-life, physical function, mental function, mortality, and experience of pain and symptom severity. The objective of this study was to assess healthcare utilization, expenditures, and work productivity among patients with RA with or without depression.

Materials and methods: Data from adult patients who had at least two visits each related to RA and depression over a 1-year period were extracted from the Truven Health MarketScan research databases. Outcomes comprised healthcare resource utilization, work productivity loss, and direct healthcare costs comparing patients with RA with depression (n?=?3,478) vs patients with RA without depression (n?=?43,222).

Results: Patients with RA and depression had a significantly greater relative risk of hospitalization and number of all-cause and RA-related hospitalizations, utilization of emergency services, days spent in the hospital, physician visits, and RA-related surgeries compared with RA patients without depression. Patients with RA and depression had a higher risk of and experienced more events and days of short-term disability compared with patients without depression. The incremental adjusted annual all-cause and RA-related direct costs were $8,488 (95% CI = $6,793–$10,223) and $578 (95% CI = –$98–$1,243), respectively, when comparing patients with RA and depression vs RA only.

Limitations: The current analysis is subject to the known limitations of retrospective studies based on administrative claims data.

Conclusions: This study suggested increased healthcare utilization, work productivity loss, and economic burden among RA patients due to comorbid depression. These findings emphasize the importance of managing depression and including depression as a factor when devising treatment algorithms for patients with RA.  相似文献   
3.
This article investigates which type of loss function is consistent with the hypothesis that major exchange rate forecasts, i.e. the euro, the British pound, and the Japanese yen vis-à-vis the US dollar, are rational. We apply a comprehensive data set, which also allows us to examine different forecast horizons and heterogeneity of forecasters.  相似文献   
4.
在分析风险自留的内生逻辑基础上,进一步分析风险自留实现银行信用风险补偿的内在机理。研究表明:银保信贷系统通过对贷款企业个体风险与事先设定的平均代偿风险的匹配性甄别,实现对银行信用风险的分级补偿功能。针对银行超预期信用风险,先行实施银行风险拨备机制对银行平均代偿风险进行补偿,然后实施超额风险自留机制对超过平均代偿风险的银行超额风险部分再次进行补偿,超额风险自留补偿基金将由银行与担保机构依据各自的风险均衡配置阈值占比共同筹集,以此来实现银行信用风险分级补偿目标。并以此为依据,设计了银保信贷系统风险自留机制。  相似文献   
5.
多径效应导致基于信号接收强度(RSSI)的室内定位方法精度不高,采用更细粒度的物理层信道状态信息(CSI)可以区分不同路径,提高定位精度。在已有基于CSI室内定位方法的基础上,通过改进对数距离路径损耗模型,得到CSI与传输距离的关系,并结合目标位置所测得的CSI值回归出目标与发射端的距离,最后通过三边定位法预测出目标的位置坐标。实验表明,相比基于RSSI的定位方法以及已有的基于CSI的定位方法,所提方法2 m以内的误差概率提高了将近40%和20%,有效提高了定位精度。  相似文献   
6.
人口老龄化不但影响到宏观经济的稳定,也会对财政政策的有效性产生影响。将人口老龄化引入动态随机一般均衡模型,分析人口老龄化对4种积极财政政策工具(扩大政府支出、提高劳动所得税起征点、提高劳动所得税累进性和增加公共投资)有效性产生的影响以及延迟退休的动态宏观经济效应,结果表明:人口老龄化扩大了政府支出和政府公共投资对消费产生的挤出效应,降低了4种积极财政政策工具对产出、消费、就业的促进效应,也强化了其对通胀和工资膨胀的提升效应;延迟退休未对私人消费产生挤出效应,有利于就业、产出和消费增长,并有助于稳定通胀和工资膨胀;与财政政策工具相比延迟退休引致的整体社会福利损失较小。人口老龄化降低了积极财政政策的有效性,基于稳定宏观经济和降低社会福利损失的考虑,延迟退休是一个较优的政策选择。  相似文献   
7.
8.
金融包容性是指提高低成本的金融服务的广泛可得性。金融服务普及的深度和广度对国民经济的发展起到了至关重要的作用。而腐败会影响金融包容性,将贫困弱势群体排除在外,客观上形成金融排斥,加重小微企业贷款难、贷款贵等问题,降低金融服务实体经济的能力和质量。本文选取1995—2016年170个国家和地区建立非平衡面板数据模型,经过实证研究发现:腐败会显著降低金融服务的包容性,但会提高金融服务的可得性。并且腐败会通过提高银行贷款利率,增加贷款规模以及提高企业融资难度传导到金融包容性。此外,本文还进行了内生性检验,并按时间、经济发展速度、人口规模和地区划分进行异质性分析。本研究填补了腐败对金融包容性影响机制研究的空白,从而丰富了腐败对金融市场影响的研究,也为普惠金融的发展提供了重要补充。  相似文献   
9.
The increase in interconnectivity and developments in technology have caused cyber security to become a universal concern. This paper highlights the dangers of the evolution of cyber risk, the challenges of quantifying the impact of cyber-attacks and the feasibility of the traditional actuarial methodologies for quantifying cyber losses. In this paper, we present a practical roadmap for assessing cyber risk, a roadmap that emphasizes the importance of developing a company and culture-specific risk and resilience model. We develop a structure for a Bayesian network to model the financial loss as a function of the key drivers of risk and resilience. We use qualitative scorecard assessment to determine the level of cyber risk exposure and evaluate the effectiveness of resilience efforts in the organization. We highlight the importance of capitalizing on the knowledge of experts within the organization and discuss methods for aggregating multiple assessments. From an enterprise risk management perspective, impact on value should be the primary concern of managers. This paper uses a value-centric/reputational approach to risk management rather than a regulatory/capital-centric approach to risk.  相似文献   
10.
This study examines the financing/funding of private firms in China. Our results show that private firms are significantly less funded through formal financing channels such as bank loans than state-owned firms, and hence have to resort to alternative financing such as trade credit. Consistent with the theoretical expectation and literature, there is a substitution effect between trade credit and bank loans for private firms, but this effect is much weaker compared to that of state-owned firms. Moreover, while the univariate comparisons indicate that private firms obtain more notes payable than state-owned firms, the multivariate regression analyses show that the relation between bank loan and notes payable is positive and indifferent between private and state-owned firms.  相似文献   
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