近代前期法国贵族研究综述

欧洲贵族阶层一直是国内外学者关注的重要课题.本文对近代前期法国贵族的国内外研究状况进行了回顾、梳理和总结,指出现时研究的成绩和不足.     

非自治时滞差分方程的渐近稳定性

研究非线性非自治时滞差分万程 △χ_(ｎ)＋α_(ｎ)χ_(ｎ)＋ｆ（ｎ,χ_(ｎ－ｋ),χ_(ｎ－ｋ_(２)),…,χｎ－ｋｍ）＝ ０的一致稳定性和一致渐近稳定性,用不同的方法推广已有的相关定理。     

Dynamic wetland mosaic environments and Asian openbill habitat creation in peri-urban Bangkok

Urban Ecosystems - This study examined the spatial relationships between various types of wetland and the distribution of Asian openbills (Anastomus oscitans) as an indicator species in a...     

A graphical model of disruptive selection on offspring size and a possible case of speciation in freshwater gobies characterized by egg-size difference

Summary The graphical technique devised bySmith andFretwell (1974) to construct a model of the optimal offspring size was applied to the case where disruptive selection might work on offspring size. On this basis, a possible case of speciation in freshwater gobies characterized by egg-size difference was discussed.     

智慧财产法政策学初探

智慧财产法律制度的设计应当遵从市场指向型、功能性、自由统御型智慧财产法的思考方法,在通过分担市场、立法、行政、司法的作用,以实现有效率的制度的同时,也应当确保自由的追求、面向承虻墓瓜?这两者作为阐述智慧财产制度设计方法的智慧财产法政策学的纵坐标和横坐标,共同发挥作用.在政策形成过程中,易于组织化的大企业的利益容易被反映,不易组织化的私人的利益难以被反映,由于这种结构性不均衡的作用,智慧财产权往往被过度强化.因此,为了尽可能消除不均衡,一边探索统领政策形成过程的构造,同时为了确保自由,通过运用司法的作用,保障程序的正统性.从效率性的观点来看,尽可能释明所希望的制度(或者不希望的制度),同时将应该确保自由的领域明确化,在呈示这种归结主义的理论的基础上,应该减少灰色的领域,缩小由程序决定的裁量的范围.     

Relation Between Benchmark Dose and No-Observed-Adverse-Effect Level in Clinical Research: Effects of Daily Alcohol Intake on Blood Pressure in Japanese Salesmen

The benchmark dose (BMD) is defined as the dose that corresponds to a specific change in an adverse response compared to the response in unexposed subjects, and the lower 95% confidence limit is termed the benchmark dose level (BMDL). In this study, the threshold of daily ethanol intake affecting blood pressure was calculated by both the BMD approach and multiple logistic regression analysis to clarify the relation between the BMDL and no-observed-adverse-effect level (NOAEL). Systolic and diastolic blood pressures (SBP and DBP) and daily ethanol intake were explored in 1,100 Japanese salesmen. The SBP and DBP were positively related to daily ethanol intake (p < 0.001) when adjusting for possible confounders such as age, body mass index, and smoking status. The adjusted risk for hypertension (SBP >or= 140 mmHg or DBP >or= 90 mmHg) increased significantly when daily ethanol intake exceeded 60 g/day, and the categorical dose of interest was 60.1-90 g/day. The BMDL and BMD of ethanol intake for increased SBP and DBP were estimated to be approximately 60 and 75 g/day, respectively. These findings suggest that the BMDL and BMD correspond to the NOAEL and lowest-observed-adverse-effect level, respectively, if the sample number of clinical data is large enough to confirm the dose-response association.     

关于含r对k间隔的组合数

ｆｒｋ记（ｎ，ｍ）为从排列在一直线上的ｎ个元素中选取ｍ个元素且恰含ｒ对ｋ间隔元素的选取方式数．ｇｒｋ（ｎ，ｍ）为从排列在圆周上的ｎ个元素中选取ｍ个元素且恰含ｒ对ｋ间隔元素的选取方式数，给出了ｆｒｋ（ｎ，ｍ）及ｇｒｋ（ｎ，ｍ）的递归关系式和卷积形式表达式，在ｋ＝０时得到ｆｒ０（ｎ，ｍ）与ｇｒ０（ｎ，ｍ）的显式．     

The impact of alternative development strategies: Simulations with a dynamic input-output model

This paper analyzes the implications of two different development strategies: outward-looking strategy led by manufacturing exports and inward-looking strategy focused on import substitution strategy. Our approach is to do counterfactual experiments with a dynamic input-output model in order to explore the impact of the different strategy on economic performance. We apply the model to two different countries (Turkey and Korea), which exemplify the two strategies, and explore the impact in each case of a switching strategy. We impose an export-led strategy on Turkey and inward-looking strategy on Korea. Our results confirm the view that export-led strategy leads to better economic performance. However, we also find that there are risks associated with this choice. An export-led strategy requires high level of foreign capital inflows in the early phase, to be paid back later as export levels rise. The strategy also requires a high level of factor productivity growth. If export growth is not maintained, the country will be left with a dangerous level of foreign debt. If high productivity growth is not achieved, the growth in factor inputs (particularly investment) required to achieve adequate growth of manufacturing is not sustainable. Finally, our results indicate that the dynamic input-output model provides a good framework for exploring the structural implications of a choice of development strategy.     

户主外地生活经历与家庭风险金融资产投资

当前,我国居民家庭存在风险金融市场有限参与的问题,这也是造成我国直接融资占比较低的客观原因。然而,学术界少有文献从户主经历角度分析其对家庭风险金融资产投资决策的影响。基于此,利用CHFS2017年数据,研究了户主的外地生活经历对家庭风险金融资产投资的影响及其作用机制。研究发现,户主有外地生活经历、户主外地生活经历时长增加均显著提升了家庭风险金融市场参与和风险金融资产投资占比。影响机制方面,户主外地生活经历会通过拓宽户主获取经济金融相关信息的渠道、增强家庭的社会互动进而提升家庭风险金融资产投资。异质性分析显示,上述促进作用仅在户主有社会医疗保险、不存在借贷约束的家庭中显著。因此,要积极完善就业政策和人才引进政策,建立健全外来人员的权益保障机制,加快普及社会医疗保险；同时,要大力发展普惠金融,引导居民家庭合理利用信贷工具优化资产配置。