Democracy and economic outcomes: Evidence from the superstars of modern art

This paper analyses the impact of the political environment on the value of artistic outcomes as measured by the price of paintings produced over the period from 1820 to 2007. The analysis is based on a unique dataset encompassing a global sample of 273 superstars of modern art born between 1800 and 1945, auction results of their paintings, and data on the political environment in the respective production countries. Controlling for a variety of economic and hedonic variables, there is a statistically significant, positive link between the level of democracy and the value of artistic output. Moreover, we find that democracy has a significant positive impact both on the density of superstar painters and the collective artistic human capital in a country.     

Technological Diffusion, Convergence, and Growth

We construct a model that combines elements of endogenousgrowth with the convergence implications of the neoclassicalgrowth model. In the long run, the world growth rate is drivenby discoveries in the technologically leading economies. Followersconverge toward the leaders because copying is cheaper than innovationover some range. A tendency for copying costs to increase reducesfollowers growth rates and thereby generates a pattern of conditionalconvergence. We discuss how countries are selected to be technologicalleaders, and we assess welfare implications. Poorly defined intellectualproperty rights imply that leaders have insufficient incentiveto invent and followers have excessive incentive to copy.     

The more others care,the more you share? – Social contagion as a stardom trigger of social media superstars –

Emerging superstars on social media platforms reshape the media landscape. This research analyses social contagion as a stardom trigger of social media superstars (SMS). We argue that in addition to serving as a quality indicator, the number of observed consumers of SMS performances also indicates the suitability of discussing the SMS performances with others. We experimentally manipulated the number of previous views of a YouTube video and find that a high number of previous views significantly increases the perceived quality and the video’s discussion suitability even when holding all objective video characteristics constant. We discuss implications for aspiring SMS and (online) marketers.     

Piracy of digital products: A critical review of the theoretical literature

Digital products can be copied at almost no cost and are subject to non-commercial copying by final consumers. Because the copy of a copy typically does not deteriorate in quality, copies can become available on a large scale basis – this can be illustrated by the surge of file-sharing networks. In this paper we provide a critical overview of the theoretical literature that addresses the economic consequences of end-user copying. We analyze basic models of piracy, models with indirect appropriation, models with network effects, and models with asymmetric information. We discuss the applicability of the different modeling strategies to a number of industries such as software, video and computer games, music, and movies.     

Re-Imagining the Border: Border Art as a Space of Critical Imagination and Creative Resistance

Contemporary world is increasingly marked by borders, fences and walls, which run through the spaces we live in. Borders are the result of a composite articulation of material aspects, concerning their external realisation, and structures of imagination, symbolic constructs and conceptual formations that involve the border and make it meaningful. In this dynamic and mutable field, artistic practices and interventions can interrupt and alterate the logic of the border, opening up a space of resistance and critical imagination, where the transparent, immutable and essentialist representation of the border is constantly challenged. Works of artists such as Bajevic, Hatoum, Salcedo, Rosver and Meredith-Vula will be analysed. They are used to transforming this separation, which they have usually lived personally, in symbolic landscape like interior landscapes. Working on imagination and creating alternative spaces, artists are able to challenge dominant representations and hegemonic discourses, making the border an active site of resistance and struggle.     

Wage Inequality,Increased Competition,and Trade Liberalization: Short Run vs Long Run

This paper examines the impact of increased competition and trade liberalization on skilled–unskilled wage inequality in the short run as well as the long run. It is shown that an increase in the number of firms in the producer services sector increases wage inequality in the short run even if the income shares of capital in the industrial and agricultural sectors were identical. A decrease in the services sector's fixed cost decreases wage inequality in the short run if the income share of capital in the agricultural sector is relatively large. Owing to the presence of external economies, a decrease in the services sector's fixed cost increases wage inequality in the long run. A decrease in import duty on the agricultural good increases wage inequality in the short as well as the long run but its effect in the long run is stronger due to the presence of external economies in the industrial sector.     

Pollution effects on preferences: A unified approach

In this paper, we introduce a unified Ramsey model where pollution has an impact on preferences and affects both consumption demand and labor supply. Pollution comes from production activities and is viewed as a stock variable with a strong inertia. A government is introduced and levies a proportional tax on production to finance depollution expenditure. We find two interesting results when pollution raises the consumption demand (compensation effect). First, in the long run, a higher green‐tax rate increases the pollution level at the steady state (green paradox) when pollution raises the labor supply (disenchantment effect). Second, in the short run, local indeterminacy can arise through a Hopf bifurcation when pollution lowers the labor supply (leisure effect) even if pollution has a strong inertia.     

Copy-protection policies and profitability

This paper examines the publisher's optimal copy-protection policies. Even if copying is more cost-efficient than producing an original, private copying harms the publisher for two reasons. First, the copy users’ contribution to the original's price is too small, and second, there is a time lag between providing the original and distributing copies. If and only if both production costs of copies and institutional costs of the distribution of copies are sufficiently small; does controlling the number of copies benefit the publisher. However, the publisher's optimal number of copies is too low from a social welfare perspective.     

The social economic impact of AIDS: Accounting for intergenerational transmission,productivity and fertility

In this paper we develop a model that aims to investigate the economic and demographic impacts of three effects of the HIV-AIDS epidemic in developing countries. The direct effect of the HIV epidemic is that it increases mortality and morbidity. The two indirect effects, resulting from the first, are the reduction in productivity of adults and the transmission of the disease to their offsprings. We allow these different effects to act either separately or together, and we investigate the marginal efficiency of health expenditures on the survival probability of individuals and demographics. The direct effect of the HIV virus is that it leads adults to increase their own health expenditure and to decrease that of their children. On the contrary, the transmission effect of the HIV virus leads parents to spend more on their children than on their own. We show that the reduction in productivity of young adults decreases health expenditures for themselves and their children. Furthermore, we find that the productivity effect dominates by large the two others. Moreover, when adults decide to have fewer children because of HIV, we show that the ratio of low to high skilled workers increases. This demographic impact impoverishes the economy in the short and medium run.     

Does travel inspire? Evidence from the superstars of modern art

This paper investigates whether travel increases the value of paintings produced by modern visual artists. The analysis is based on the 214 most prominent modern visual artists born between 1850 and 1945 and auction records of their paintings over the past 20 years. We find that artworks produced in the year of a journey are 7% more valuable than paintings produced in periods with no travel. We attribute this effect to human capital investments, knowledge spillovers and inspiration from the travel destination itself. There are persistent, but declining benefits to travel over the subsequent 4 years. The analysis shows that the impact of travel is smaller for later periods as modern art becomes more abstract. The effect on the value of paintings differs depending on the purpose of a journey: work-related, recreational and politically motivated journeys have a positive contemporaneous effect on value, whereas educational journeys have a negative effect. In addition, we find that France, Germany and the United States are the most frequently visited destinations for modern artists and also yield considerable benefits during times of strong innovation.     

Falling Labor Share and Rising Unemployment: Long–Run Consequences of Institutional Shocks?

The literature on unemployment has mostly focused on labor market issues while the impact of capital formation is largely neglected. Job creation is often thought to be a matter of encouraging more employment on a given capital stock. In contrast, this paper explicitly deals with the long–run consequences of institutional shocks on capital formation and employment. It is shown that the usual tradeoff between employment and wages disappears in the long run. In line with an appropriation model, the estimated values for the long–run elasticities of substitution between capital and labor for Germany and France are substantially greater than one.     

Elasticity of demand,price and time: lessons from South Africa's plastic-bag levy

Policy makers in many countries have perceived plastic-bag litter as a problem, and have used a variety of regulatory tools to address it. South Africa's current legislation on plastic-bags came into effect on 7 May 2003. It increased the thickness of the plastic used, charged a small levy and required that bags be sold rather than distributed gratis. These regulations sharply reduced consumption of plastic bags in the short term, but unlike the Irish and Danish levies have failed to curb their use meaningfully in the long run. It is suggested that the initial sharp fall in use of bags was a result of loss aversion rooted in an endowment effect (the bags having long been a free good). Once consumers became accustomed to paying for bags, demand slowly rose to its historic levels.     

Do incentive systems spur work motivation of inventors in high tech firms? A group-based perspective

In this paper, we explore with a model the potential tensions between the incentive system of groups of inventors and knowledge diversity in a high tech firm. We show that, when all groups are rewarded and able to interact freely with their peers, extrinsic and intrinsic motives are mutually self-reinforcing, leading to crowding in effects. As a result, the level of created knowledge increases in each group, reinforcing the diversity of the firm’s knowledge base. By contrast, competitive rewards and constrained autonomy are likely to produce motivating effects in a small number of groups, limiting knowledge creation to the firm’s core competencies. In this case, the firm can suffer from crowding out effects by the other groups, leading eventually to the extinction of creation in their fields and reduced diversity in the long run. The results are illustrated with empirical findings from a case study of a French high tech firm.     

Regional Blocs and Foreign Direct Investment

The paper examines the impact of the emergence of regional blocs on the patterns of interbloc and intrabloc trade when firms have the option to engage in foreign direct investment (FDI). For exogenously given external tariffs, when firms have the option to engage in FDI, all interbloc trade may cease—complete trade diversion that is replaced by interbloc FDI investment creation. In such an event the volume of world trade declines but this is more than offset by the increase in world output due to direct investment. The paper also investigates the optimal tariff that a trading bloc levies on imports from nonmember countries. The tariffs are restricted by the option to engage in two‐way direct investment; hence, the regional blocs are hampered from mutually harming one another through an escalation in the tariff war. Finally, the formation of two regional blocs enhances the welfare of all countries.     

Redistributive policy,inequality and growth

Does redistribution increase inequality? Is inequality harmful for growth? Both questions have recently been addressed in a number of single-tax models. In this paper, I examine the relationship between policy, growth and inequality when income and inherited wealth can be taxed at different rates. In the model, parents accumulate human capital and a return-bearing, storable good in order to increase the quality of their children. Inequality arises because the learning ability of children is stochastic. Redistributive labor income taxation has a negative impact on short- and long-run growth while taxation of inherited stocks increases growth. Effects of both taxes on income inequality are ambiguous. A switch from income to inheritance taxation may increase average utility of all generations involved. I calculate a structure-induced equilibrium of the political process by means of a stochastic simulation of the model. In the short run initial wealth-inequality can stimulate growth, while initial inequality of the endowment with human capital is harmful for growth.     

Private copying,reproduction costs,and the supply of intellectual property

Recent technological advances that have substantially reduced the cost of private copying of intellectual property, and led to widespread copying, have produced claims of severe harm to producers. This paper develops a model to analyze the effect of private copying on the profits of producers and the welfare of consumers. When originals and copies are perfect substitutes and all originals are copied the same number of times, a necessary and sufficient condition for both profits and consumer welfare to decrease is that copying is less efficient than producing originals. However, when some originals are copied and others are not, producer profits may decline even when copying is efficient, and some consumers may benefit from inefficient copying. The analysis suggests that published estimates of the harm to producers resulting from private copying may be seriously in error.     

指数型基金跟踪误差的实证分析

指数型基金是指采用指数化方式构建投资组合的基金,它与标的指数的选择密切相关.指数基金的构建有三大要素:标的指数、样本证券、权重分配,其目的是与标的指数之间的跟踪误差尽量小.虽然流动性、噪音、处置效应等均会影响指数基金的跟踪误差,但是,在一个较高有效性的市场中,指数型基金与标的指数间的跟踪误差要比新兴市场的小,这主要是因为该市场的流动性较好,成份股的选择有较大的余地.而在中国这样一个"新兴 转轨"市场中,指数基金往往会因为标的指数成份股数量不同而产生很大的差异,标的指数成份股越多,相对应指数基金的跟踪误差就越大;复制型基金完全复制策略下的跟踪误差要比增强型指数基金非完全复制策略下的跟踪误差要小;大额申购与赎回对指数基金跟踪误差产生明显影响.因此,指数型基金投资组合的构建应坚持被动投资,力避主动投资.     

Productivity Shocks and Real Effective Exchange Rates

This paper provides new insights into the relationship between exchange rates and productivity developments for European Economies. We focus on the question whether productivity changes have a long‐run impact on real effective exchange rates for a large number of European economies. Focusing on a sample period running from 1995 until 2013, we adopt a cointegrated vector autoregressive approach and distinguish between long‐run equilibrium, short‐run dynamics and long‐run impact of shocks. Our findings show that for several industrialized economies, real effective exchange rates and labor productivity are not related over the long‐run. A possible explanation for this result is that wage developments do not reflect increases in labor productivity to a large degree, which prevents a transmission to the real effective exchange rate through the price channel. The results for Central and Eastern European Countries are more encouraging since a positive impact of labor productivity on real effective exchange rate is frequently observed.     

The economic analysis of lotteries

This paper considers policy issues arising in the design, regulation and taxation of lotteries, focusing on the market for an on-line lottery game. Demand determines who buys lottery tickets and in what quantities. The design of lotteries affects the terms on which tickets are supplied.
UK data suggest that its lottery may be priced too high to maximize lottery revenue – more revenue might be raised if the proportion of sales allocated to tax and other levies were smaller.
Having established the positive economics of lotteries, the paper then assesses their welfare implications. Pari-mutuel lotteries enjoy scale economies and, as natural monopolies, are invariably run either by government agencies or a regulated licensee. I estimate consumer surplus and identify the excess burden that arises from existing (over)taxation of lotteries. The large price elasticity of demand implies that revenue raised from the lottery is raised very inefficiently. Moreover, the demand for lottery tickets is inferior (and there is some evidence that such games are contagious and addictive). So using lotteries as a vehicle for raising revenue is extremely regressive. Finally, I consider other policy implications: induced effects on charitable giving and on other forms of gambling; the impact on the government budget; perceptions of risk; and distributional considerations.     

G VC嵌入、无形资产要素与装备制造企业价值创造效率

将GVC因素引入企业价值创造体系中,基于效率视角揭示无形资产对企业价值创造的影响机理,以及GVC对该影响的调节机理,构建机理框架模型并提出研究假设。基于效率视角,选择无形资产对企业价值创造影响的评价方法并构建相应测度模型。基于中国装备制造企业数据进行实证研究,测度各无形资产要素对企业价值创造的影响方向和影响强度,以及GVC对无形资产影响的调节作用。最后,提出GVC下提升中国企业价值创造效率的策略建议。结果发现：品牌资产、知识产权、技术创新、产品功能和人力资源质量对企业价值创造均具有正向影响,而人力资源数量和有形资产则具有负向影响;GVC因素对企业价值创造具有正向影响,但影响强度不大;GVC对无形资本对企业价值创造效率的影响具有正向调节作用;通过嵌入GVC、重视企业品牌建设、加强企业技术创新和知识产权积累、提升企业人力资源质量等策略,可以有效提升企业价值创造效率。