快速成形网络化制造系统的IDEF0功能模型

IDEF0功能模型在快速成形网络化制造系统中发挥着积极作用。本文首先阐述了IDEF0功能模型,并介绍了快速成形网络化制造系统的原理,然后结合实例对IDEF0功能模型的实际应用进行了分析。     

高墩连续梁0号块施工关键技术

京沪高速铁路南京南站枢纽仙西联络线秦淮河特大桥2联(48+80+48)m连续梁分别跨京沪高速铁路和宁杭高速公路。连续梁主墩柱高31.5m,其施工难度大、工期紧,是联络线重点工程。本文系统介绍高墩连续梁0号块钢牛腿托架结构体系设计、支架结构验算、钢牛腿安装以及混凝土浇筑注意事项,可为同类桥梁结构提供有益的参考。     

Testing the fire-sale FDI hypothesis for the European financial crisis

Using a panel of corporate transactions in 27 EU countries from 1999 to 2012, we investigate the impact of the financial crisis on the market for corporate assets. In particular, we test the ‘fire-sale FDI’ hypothesis by analyzing the number of cross-border transactions, the price of corporate assets and the impact of credit and macroeconomic conditions. According to the fire-sale FDI hypothesis, countries affected by a crisis attract foreign buyers selling assets at a discount. We find a dampening effect of the crisis on cross-border transactions in all EU countries. Although countries with higher sovereign default risk and lower economic demand attracted more foreign buyers in the crisis, lower domestic credit is associated with less cross-border transactions. Corporate assets in crisis countries are cheaper, particularly if domestic credit is low; however, these findings are not limited to the crisis period. This pattern is strikingly different from the East Asian and Latin American financial crises. Overall, we find little evidence for ‘fire-sale FDI’ suggesting an integrated European market without significant frictions.     

Migration,Unemployment, and Skill Downgrading

In this paper, we analyze the labor market impacts of immigration under flexible and rigid labor market regimes. A general equilibrium framework is developed, accounting for skill heterogeneity and labor market frictions, where unemployed medium‐skilled manufacturing workers are downgraded into low‐skilled service jobs, while low‐skilled service workers might end up unemployed. The analytical analysis shows that medium‐skill immigration decreases low‐skilled unemployment under the flexible regime, indicating a complementarity effect, while the rigid regime induces a substitution effect, leading to low‐skilled unemployment. Moreover, it leads to wage polarization. In a numerical analysis, the economic effects of different migration scenarios are quantified.     

The Global Financial Crises of 2007–2010 and the future of capitalism

This paper presents an analysis of the 2007-2010 Global Financial Crisis which started with the sub-prime crisis in the U.S. and became global very fast. It argues that the financial system in the United States is a complex interlocking structure of markets, institutions and regulators. The causes and culprits of the crisis, the misaligned incentives of participants and exogenous events such as the wars in Afghanistan and Iraq, precipitated failure in key markets: commodities, sub-prime housing, equities, and credit. One of the strategic consequences of this crisis is that the US will lose its dominance in world power, the frequent crises and vulnerabilities of the Neoliberalism and examines the future of capitalism. Of the alternatives to economic system, the capitalism is the most viable economic system. However, it must adopt real and efficient allocation of resources to maximize welfare of all parties and seriously address the income inequality. It must reject crony capitalism, enact true financial regulation of institutions and markets, end corporate socialism and address the system’s structural deficiencies.     

锦江特大桥68+128+68m连续梁0#块托架设计研究

针对铜川—玉屏铁路线锦江特大桥68+128+68m连续梁0#块托架设计计算为工程实例,对连续梁0#块托架的设计计算过程进行了详尽的论述,并结合有限元仿真计算软件Midas对0#块托架各受力构件进行建模数值分析。表明:针对锦江特大桥68+128+68m连续梁0#块托架设计符合力学性能要求。     

Dancing to the Donors' Tune? Policy Choice in Aid‐Dependent Countries

Current aid rhetoric emphasizes the selective allocation of otherwise unconditional funds in support of the recipients' own plans, in contrast to the old donor practice of bundling money and policies. I show that when recipients have private information, policies reflecting their preferences and knowledge might result in such a regime. However, generous transfers can also induce them to conform to the outcome‐oriented expectations of donors at the expense of lower aid impact. Such behaviour is consistent with an abundance of case‐study evidence. Moderate disagreements over what the optimal policy is could actually produce better results. Certain forms of both donor competition and coordination might also eliminate this distortion, while a donor concern for need only removes incentives for aid‐seeking in the least needy countries. In summary, optimal aid policies are highly context‐specific, and donors should thus concentrate their efforts to practise more informed selectivity.     

DETERMINANTS OF SOVEREIGN BONDS RATINGS: A ROBUSTNESS ANALYSIS

Several studies have attempted to deduce the determinants of sovereign bond ratings. In this study, Extreme Bounds Analysis is applied to approximately 30 factors proposed by the literature in order to assess their robustness with a focus on the relative importance that economic and political variables receive in the shaping of the ratings. We find that policies that constrain the public sector are among the most robust. Variables such as rule of law, openness to economic flows, central bank independence, and market friendly policies are found to be more robustly correlated with the ratings than foreign reserves, fiscal deficit, sovereign bond yields, and economic growth.     

A decision method for supplier selection in multi-service outsourcing

Although supplier selection in multi-service outsourcing is a very important decision problem, research concerning this issue is still relatively scarce. This paper proposes a decision method for selecting a pool of suppliers for the provision of different service process/product elements. It pioneers the use of collaborative utility between partner firms for supplier selection. A multi-objective model is built to select desired suppliers. This model is proved to be NP-hard, so we develop a multi-objective algorithm based on Tabu search for solving it. We then use an example to show the applicability of the proposed model and algorithm. Extensive computational experiments are also conducted to further test the performance of the proposed algorithm.     

Oil price shocks and volatility spillovers in the Nigerian sovereign bond market

This paper investigates volatility spillover in the Nigerian sovereign bond market arising from oil price shocks, using Vector Autoregressive Moving Average ‐ Asymmetric Generalized Autoregressive Conditional Heteroscedasticity (VARMA‐AGARCH) model. The paper covers the period March 22, 2011 to April 14, 2016 and makes use of the daily data of the Nigerian Sovereign Bond, Brent oil and West Texas Intermediate (WTI), respectively. We endogenously and sequentially detect structural break points using the test of Bai and Perron (2003) framework. In order to accurately estimate the model, we modify it by incorporating the break points into the VARMA‐AGARCH model, a process which if ignored would lead to model misspecification. The results obtained demonstrate a significant cross‐market volatility transmission between oil and sovereign bond market with ample sensitivity to structural breaks. The study also computes optimum weight portfolio and hedge ratio both with and without structural breaks and results equally indicate sensitivity to structural breaks.