Ipv6技术应用经济前景分析

文章分析了IPv6的过渡技术与技术优势，并且对IPv4与IPv6进行了简要的比较，对IPv6发展中经济方面的障碍提出了几点建议。     

Public and Private Education in an Integrated Europe: Studying to Migrate and Teaching to Stay?

This paper investigates public and private choices between internationally applicable and country‐specific education when graduates are mobile. Human capital depends on innate skills and study effort with either type of education. It is shown that national governments provide too few students with internationally applicable education, and too many with country‐specific education. This effect is mitigated, but not entirely eliminated, by the introduction of a graduate tax, according to which graduates are required to pay part of their taxes to the country where they received their education, regardless of residence. However, private educational choices are socially optimal with suitably differentiated tuition fees.     

IPv6网络部署

文章对ipv6基本概念,及ipv4向ipv6过渡的现行技术进行了阐述,并给出了路由协议及ipv4向ipv6过渡技术的实现方法,结合学校校园网的ipv6实际解决方案,系统描述了ipv6校园网中的实际应用.     

Bailout uncertainty in a microfounded general equilibrium model of the financial system

This paper develops a micro-founded general equilibrium model of the financial system composed of ultimate borrowers, ultimate lenders and financial intermediaries. The model is used to investigate the impact of uncertainty about the likelihood of governmental bailouts on leverage, interest rates, the volume of defaults and the real economy. The distinction between risk and uncertainty is implemented by applying the multiple priors framework to beliefs about the probability of bailout.Results of the analysis include: (i) An unanticipated increase in bailout uncertainty raises interest rates, the volume of defaults in both the real and financial sectors and may lead to a total drying up of credit markets. (ii) Lower exante bailout uncertainty is conducive to higher leverage, which in turn raises moral hazard and makes the economy more vulnerable to expost increases in bailout uncertainty. (iii) Bailout uncertainty affects the likelihood of bubbles, the amplitude of booms and busts as well as the banking and the credit spreads. (iv) Higher bailout uncertainty is associated with higher returns’ variability in diversified portfolios and higher systemic risks, (v) Pre-crisis expansionary monetary policy reinforces those effects by inducing higher aggregate leverage levels. (vi) The larger the change in bailout uncertainty and the change in aversion to this uncertainty, the stronger the pre-crisis buildup and the deeper the ensuing crisis.A central policy implication of the analysis is that the vaguest is bailout policy prior to a crisis, the lower is the magnitude of investments destroyed or missed due to errors in evaluating bailout and other intervention policies. On the other hand, the clearer is bailout policy upon the eruption of a crisis, the smaller the contraction of credit and the destruction of investment activity.     

Allocative efficiency measurement with endogenous prices

In the nonparametric measurement of allocative efficiency, output prices are fixed. If prices are endogenous, the overall output in the market determines the allocative efficient point. We develop an alternative semi-nonparametric model that allows prices to be endogenously determined.     

The importance of accounting for the uncertainty around the preference-based health-related quality-of-life measures value sets: a systematic review

Preference-based measures of health-related quality-of-life including, but not limited to, the EQ-5D, HUI2 and the SF-6D have been increasingly used in calculations of quality-adjusted life years for cost effectiveness analyses. However, the uncertainty around the measures’ value sets is commonly ignored in economic evaluation. There are several types of uncertainties, including methodological, structural, and parameter uncertainties, with the latter being the focus of this review paper. The objective is to highlight the gap in the literature regarding the existence of uncertainty in the value sets, focusing mainly on the EQ-5D and SF-6D. To the best of the authors’ knowledge, this is the first systematic review revolving around uncertainty. After searching extensively for studies involving uncertainties in all preference-based measures, the results showed that uncertainty has been approached through different means, while parameter uncertainty has been ignored in most, if not all, cases. These findings suggest that uncertainty should be accounted for when using preference-based measures in economic evaluations. Ignoring this additional information could impact misleadingly on policy decisions.     

罗丹明6G荧光特性及其在荧光猝灭法中的应用

罗丹明类荧光染料具有摩尔吸光系数高、光稳定性好、对pH值不敏感,较宽的波长范围和较高的量子产率等优点。详细分析了罗丹明6G这种荧光染料的荧光特性,并按荧光共振能量转移、形成杂多酸离子缔合物和与碘化钾反应生成离子缔合物3种不同的荧光猝灭方式,综述了罗丹明6G在荧光猝灭法中的广泛应用。     

Regulatory competition and forbearance: Evidence from the life insurance industry

Regulatory separation theory indicates that a system with multiple regulators leads to less forbearance and limits producer gains while a model of banking regulation developed by Dell’Ariccia and Marquez (2006) predicts the opposite. Fragmented regulation of the US life insurance industry provides an especially rich environment for testing the effects of regulatory competition. We find positive relations between regulatory competition and profitability measures for this industry, which is consistent with the Dell’Ariccia and Marquez model. Our results have practical implications for the debate over federal versus state regulation of insurance and financial services in the US.     

Scaling models for the severity and frequency of external operational loss data

According to Basel II criteria, the use of external data is indispensable to the implementation of an advanced method for calculating operational risk capital. This article investigates how the severity and frequencies of external losses are scaled for integration with internal data. We set up an initial model designed to explain the loss severity by taking into account potential selection bias in the external data. Estimation results show that many variables have significant power in explaining the loss amount. We use them to develop a normalization formula. We develop a zero-inflated count-data model to scale the loss frequency. We compute an operational VaR and we conduct out-of-sample backtesting.     

Competition for small firm banking business: Bank actions versus market structure

This paper addresses two questions related to the ongoing consolidation of the US banking industry and its effect on small firm financing. First, are conventional measures of market structure (e.g. geographic market size and deposit concentration) related to bank competition for small firm financial business? Second, does an increase in bank competition produce an improvement in bank services irrespective of market structure? To answer these questions we use a survey of small firm owners that asks them to report on changes in bank competition for their business. Our findings show that reports of increased competition by small firm owners are negatively related to the level of and change in deposit concentration. In addition, we find a significant positive association between changes in bank competition reported by small firms and their reports of changes in banking outcomes (e.g. service quality) that is independent of deposit concentration, firm risk, and credit usage.