Efficient Management of Insecure Fossil Fuel Imports through Taxing Domestic Green Energy?

A small open economy produces a consumer good as well as renewable (green) and fossil fuel based (brown) energy. It imports fossil fuel at an uncertain price and suffers from carbon emission damages. Unregulated competitive markets are shown to be inefficient. The implied market failures are due to the agents' attitudes toward risk, to risk shifting, and the uniform price for both types of energy. Under the plausible assumptions that consumers are prudent and at least as risk‐averse as the producers of brown energy, the risk can be efficiently managed by placing a tariff on fuel imports (which is equivalent to taxing carbon emissions in the model at hand) and taxing green energy. The need to tax green energy contradicts the widespread view that subsidization of green energy is an appropriate means to enhance energy security in countries depending on risky fossil fuel imports.     

Lumpy Investment,Lumpy Inventories

The link between the microenvironment (frictions and heterogeneity) and the macroeconomic dynamics of general equilibrium macromodels is influenced by exactly how general equilibrium closes the model. We make this observation concrete using the recent literature on how nonconvex capital adjustment costs influence aggregate investment dynamics. We introduce inventories into a two‐sector lumpy investment model and find that nonconvex capital adjustment costs dampen and propagate investment impulse responses, more so than without inventories. With two means of transferring consumption into the future, fixed capital and inventories, the tight link between aggregate saving and fixed capital investment is broken.     

Asymmetric effects of monetary policy shocks on economic performance: empirical evidence from Turkey

This study investigates the asymmetric effects of monetary policy shocks on the macroeconomic variables of exchange rate, output and inflation for an emerging economy ? Turkey ? by using monthly data between 1990 and 2014. We employ the innovative nonlinear vector autoregressive model of Kilian and Vigfusson (2011), which allows us to observe the effect of different stances (tight or loose) and different sizes (small or large) of monetary policy actions. Our empirical evidence reveals that tight monetary policy, which, in this case, is captured with a positive shock to interest rate, decreases exchange rate, output and prices, as economic theory suggests. Loose monetary policy, which is captured with a negative shock to interest rate, has the opposite effect on these variables. However, the effects of loose monetary policy are weaker than the effects of tight monetary policy because loose monetary policy shocks are less effective than tight monetary policy shocks. Moreover, as the magnitude of a shock increases, the difference between the effects of tight and loose monetary policy policies also increases.     

食品分析中气相色谱-质谱联用技术应用概述

目前,在食品分析行业中存在很多分析方法,其中最为重要的分析方法当属气相色谱-质谱联用技术.该法应用广泛,可对食品中的农药残留及兽药残留等各种复杂基质进行有效的定性定量分析检测,以便能提高食品日常抽检中的检测效率,确保食品安全.     

COURSE BIDDING AT BUSINESS SCHOOLS*

Mechanisms that rely on course bidding are widely used at business schools in order to allocate seats at oversubscribed courses. Bids play two key roles under these mechanisms: to infer student preferences and to determine who have bigger claims on course seats. We show that these two roles may easily conflict, and preferences induced from bids may significantly differ from the true preferences. Therefore, these mechanisms, which are promoted as market mechanisms, do not necessarily yield market outcomes. We introduce a Pareto‐dominant market mechanism that can be implemented by asking students for their preferences in addition to their bids over courses.     

浅谈县级食品药品检验检测机构的运行和发展

在综合分析当前县级食品药品检验检测机构运行现状的基础上,总结相关的问题和经验,提出应从管理体系、人员、仪器设备等方面加以持续改进,从而为政府部门更精准地管理引导下属检验检测机构和县级检验检测机构更顺利地运行发展提供参考.     

Relationship Trading in Over-the-Counter Markets

We examine the network of trading relationships between insurers and dealers in the over-the-counter (OTC) corporate bond market. Regulatory data show that one-third of insurers use a single dealer, whereas other insurers have large dealer networks. Execution prices are nonmonotone in network size, initially declining with more dealers but increasing once networks exceed 20 dealers. A model of decentralized trade in which insurers trade off the benefits of repeat business and faster execution quantitatively fits the distribution of insurers' network size and explains the price–network size relationship. Counterfactual analysis shows that regulations to unbundle trade and nontrade services can decrease welfare.     

An Overview of the Proximate Determinants of Economic Growth in Indonesia Since 1960*

In this paper, we address two questions. First, what determined the growth of GDP per worker in Indonesia from 1960 to 2014? We examine Indonesia’s economic performance, using a growth accounting framework. We show that economic growth during the Soeharto era after 1975 was mainly determined by an increase in capital accumulation. Negative growth in total factor productivity (TFP) during the Asian financial crisis was more noticeable in Indonesia than in comparable ASEAN countries. In Indonesia, the contribution of TFP growth turned persistently positive after 1999. Second, what are the key determinants of the GDP per worker differences between Indonesia and the United States? Using data from the recently updated Penn World Table database and employing a levels accounting method, we find that the gap in physical capital deepening between the two countries is of declining importance in explaining the gap in labour productivity between Indonesia and the United States. We then compare our findings with data from the World Bank’s Changing Wealth of Nations 2018.     

The Shadow Margins of Labor Market Slack

We use a mix of new and existing data to develop the Aggregate Hours Gap (AHG), a novel measure of labor market underutilization. Our measure differentiates individuals by detailed categories of labor market participation and uses data on their desired work hours as a measure of their potential labor supply. We show that desired hours vary widely by demographics and detailed labor force status, and that the gap between desired and actual work hours is strongly positively correlated with reported search effort. The AHG suggests a more sluggish labor market recovery since the Great Recession than either the official unemployment rate or alternative measures of labor market underutilization. Modest amounts of underutilization among the part-time employed and a substantial degree of underutilization among those out of the labor force account for the disparity. The AHG also does well in accounting for wage movements over our sample period.