昆山花桥梦世界飞天影院单层球面网壳结构整体稳定性分析

对于球形单层网壳结构进行考虑初始缺陷的几何非线性的有限元分析即荷载-位移全过程分析。     

富水粉细砂地层隧道综合降水设计与施工技术

本文通过对实例进行分析论述,解决了围岩受施工扰动和水长期浸润后开挖时不稳定问题,保证了隧道结构和施工安全,为同等或类似地质条件下的地下工程研究及施工提供借鉴和参考。     

Ronald Jones's duality analysis as a foundation for applied general‐equilibrium modeling

Ronald Jones made seminal contributions to general‐equilibrium theory, moving away from an emphasis on the existence of equilibrium to algebraic formulations which enabled us to characterize key relationships between parameters and variables, such as that between tariffs and domestic factor prices and welfare. But the analysis remained limited in value for policy evaluation: the analysis was local, it provided only qualitative results, it was limited to very small models, and strictly interior solutions had to be assumed. The contribution of this paper is largely pedagogic and methodological. I show how the tools and approach pioneered by Jones can be generalized via the use of duality, complementarity and the Karush–Kuhn–Tucker theorem into a global, quantitative analysis of large changes in high‐dimensional models which also allows for regime changes and corner solutions. I then show how the resulting nonlinear complementarity problem directly translates into a numerical model using the General Algebraic Modeling System (GAMS).     

全域旅游示范区空间分布特征及影响因素分析

［目的］全域旅游示范区的确立为旅游业增添了新的旅游吸引模式，成为新时期我国旅游产业转型升级的重要途径之一。［方法］文章利用ArcGIS102，运用最邻近距离法、不均衡指数、核密度分析、等方法，对标记在地图上的500个全域旅游示范区的空间分布特征进行分析，并探究其空间分布差异的影响因素。［结果］（1）示范区空间分布不均衡，呈典型的聚集型分布，从区域角度来看，西部地区示范区数量多于东部地区，中部地区相对较少，与传统认知上的示范区分布格局存在一定错位； （2）示范区空间分布密度存在明显差异，其中江浙皖、湘赣交界、晋豫交界、陕渝交界等地区示范区聚集最多，形成显著的高密度区； （3）示范区规模度差距较大，上海、北京、江苏、天津等省市规模度较大，其他省市规模度较小； （4）示范区空间分布受到资源禀赋、区位交通、社会经济、政策环境等因素影响较大，呈现“傍景”“环路”的分布格局。［结论］全域旅游示范区空间分布不均衡，各省市既要挖掘自身核心竞争力，也要加强区域协调发展，突出示范区模范带头作用，达到辐射周边市县的效果，实现全域旅游资源优化配置。     

The Level and Stability of Institutional Ownership and Firm Performance: Evidence from Taiwan

The purpose of this paper is to investigate the influence of shareholding stability of institutional investors on firm performance. We analyze 647 sample companies listed in the Taiwan Stock Exchange from 2005 to 2009 using the coefficient of variance of institutional holding proportion as the measure for ownership stability. The empirical results show that increasing stability of institutional holdings is related to better firm performance. The low-risk and younger firms with higher CEO incentive compensation, larger insider holdings, and higher growth usually have better performance. Furthermore, when the long-term institutional shareholdings, particularly of foreign institutions, are higher, the firm performance is better.     

Transitions between equilibria in bilingual games under logit choice

We study the effect of introducing a bilingual option on the long run equilibrium outcome in a class of two-strategy coordination games with distinct payoff and risk dominant equilibria under the logit choice rule. Existing results show that in the class of two-strategy games under consideration, the inefficient risk dominant equilibrium is selected in the long run under noisy best response models. We show that if the cost of the bilingual option is sufficiently low then the efficient payoff dominant equilibrium will be selected in the long run under the logit choice rule.     

营商环境优化能够提升全球价值链分工地位吗*

本文基于世界银行发布的历年营商环境报告相关数据，从OECD ICIO提供的基础数据测算结果的基本事实出发，理论阐释了营商环境对攀升全球价值链的影响及可能机制。以此为理论先导，进一步利用跨国面板数据的计量检验发现：第一，营商环境优化的确对价值链分工地位具有显著正向作用；第二，上述正向作用不仅来自营商环境优化直接效应，而且还通过价值链迁移、创新活动激发、贸易条件改善等中介作用形成间接效应。据此，打造国际一流营商环境对促进中国攀升全球价值链具有重要支撑作用。     

Fire sales by euro area banks and funds: What is their asset price impact?

The assets under management of investment funds have soared in recent years, triggering a debate on their possible implications for financial stability. We contribute to this debate assessing the asset price impact of fire sales in a novel partial equilibrium model of euro area funds and banks calibrated over the period between 2008 and 2017. An initial shock to yields causes funds to sell assets to address investor redemptions, while both banks and funds sell assets to keep their leverage constant. These fire sales generate second-round price effects. We find that the potential losses due to the price impact of fire sales have decreased over time for the system. The contribution of funds to this impact is lower than that of banks. However, funds’ relative contribution has risen due to their increased assets under management and banks’ lower leverage and rebalancing towards loans. Should this trend continue, funds will become an increasingly important source of systemic risk.     

Measuring the deadly embrace: Systemic and sovereign risks

This study contributes to the literature by making a first step toward implementing a comprehensive internally coherent measurement of systemic risk in a country. It measures systemic risk and the ensuing conditional contingent liabilities of the sovereign stemming from Luxembourg’s Other Systemically Important Institutions (OSIIs), the Global Systemically Important Banks (G-SIBs) to which they belong, the investment funds sponsored by the OSIIs, the household and the non-financial corporate sectors. The ensuing estimated systemic contingent claims are included in a stochastic version of the general government’s balance sheet to gauge their impact on the country’s sovereign risk. Results indicate that time-varying conditional implicit guarantees from OSSIs are larger than those from G-SIBs and investment funds, while systemic risk stemming from the household and non-financial corporate sectors is moderate. The robustness of the sovereign is not drastically affected by systemic risk stemming from the rest of the economy. However, illustrating the so-called “deadly embrace”, sovereign risk would significantly rise as a result of a historically plausible increase in sovereign assets’ value volatility combined with an economy-wide shock. The main policy implication is that financial stability stands on two columns, a resilient financial sector and a sustainable fiscal position.