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421.
The decisive statutory provision of the EU for patent protection of genetic engineering inventions is the so-called directive on biotechnological patents (DBP). Its objective is the encouragement of research and development in the genetic engineering sector. The following exposition shows that the DBP has two major flaws from the economist's point of view, under which particularly small and medium-sized enterprises, the driving force of this young line of business, suffer.  相似文献   
422.
Patterns and drivers of post-socialist farmland abandonment in Western Ukraine   总被引:10,自引:0,他引:10  
Farmland abandonment restructures rural landscapes in many regions worldwide in response to gradual industrialization and urbanization. In contrast, the political breakdown in Eastern Europe and the former Soviet Union triggered rapid and widespread farmland abandonment, but the spatial patterns of abandonment and its drivers are not well understood. Our goal was to map post-socialist farmland abandonment in Western Ukraine using Landsat images from 1986 to 2008, and to identify spatial determinants of abandonment using a combination of best-subsets linear regression models and hierarchical partitioning. Our results suggest that farmland abandonment was widespread in the study region, with abandonment rates of up to 56%. In total, 6600 km2 (30%) of the farmland used during socialism was abandoned after 1991. Topography, soil type, and population variables were the most important predictors to explain substantial spatial variation in abandonment rates. However, many of our a priori hypotheses about the direction of variable influence were rejected. Most importantly, abandonment rates were higher in the plains and lower in marginal areas. The growing importance of subsistence farming in the transition period, as well as off-farm income and remittances likely explain these patterns. The breakdown of socialism appears to have resulted in fundamentally different abandonment patterns in the Western Ukraine, where abandonment was a result of the institutional and economic shock, compared to those in Europe's West, where abandonment resulted from long-term socio-economic transformation such as urbanization and industrialization.  相似文献   
423.
The title of this opening chapter in the author's new book on activist investors refers to Carl Icahn's solution to the “agency” problem faced by the shareholders of public companies in motivating corporate managers and boards to maximize firm value. During the 1960s and '70s, U.S. public companies tended to be run in ways designed to increase their size while minimizing their financial risk, with heavy emphasis on corporate diversification. Icahn successfully challenged corporate managers throughout the 1970s and 1980s by buying blocks of shares in companies he believed were undervalued and then demanding board seats and other changes in corporate governance and management. This article describes the evolution of Icahn as an investor. Starting by investing in undervalued, closed‐end mutual funds and then shorting shares of the stocks in the underlying portfolio, Icahn was able to get fund managers either to liquidate their funds (giving Icahn an arbitrage profit on his long mutual fund/short underlying stocks position) or take other steps to eliminate the “value gap.” After closing the value gaps within the limited universe of closed‐end mutual funds, Icahn turned his attention to the shares of companies trading for less than his perception of the value of their assets. As the author goes on to point out, the strategy that Icahn used with such powerful effect can be traced to the influence of the great value investor Benjamin Graham. Graham was a forceful advocate for the use of shareholder activism to bring about change in underperforming—and in that sense undervalued—companies. The first edition of Graham's investing classic, Security Analysis, published in 1934, devoted an entire chapter to the relationship between shareholders and management, which Graham described as “one of the strangest phenomena of American finance.”  相似文献   
424.
We demonstrate that minority mechanisms arise in the dynamics of markets because of price impact; accordingly the relative importance of minority and delayed majority mechanisms depends on the frequency of trading. We then use mixed Majority/Minority Games to illustrate that a vanishing price return autocorrelation function does not necessarily imply market efficiency. On the contrary, we stress that crucial differences might be present between correlations measured conditionally and unconditionally on external patterns in such models.  相似文献   
425.
This paper empirically investigates the impact of the first announcement of TARP, the announcement of revised TARP, respective capital infusions under TARP–CPP and capital repayments on changes in shareholder value and the risk exposure of supported US banks. Our analysis reveals a light and a dark side of TARP. While announcements as well as capital repayments may provoke positive wealth effects and a decrease in bank risk, equity capital injections to banks are observed to be a severe impediment to restore market confidence and financial stability. Furthermore, while TARP announcements and capital injections may increase systemic risk, no significant effect on systemic risk is found for capital repayments.  相似文献   
426.
This study addresses the short‐term disparity between REIT returns and direct property returns, and argues that this phenomenon is due to the trading constraints in the direct property market imposed on REITs (the dealer rule). This renders REITs unable to time markets in order to realize short‐term property appreciation profits, making REITs primarily a property income investment rather than a full property investment, and explains the observed disparity. Empirically, I find that REIT returns consistently reflect property income returns, but not property appreciation returns. This makes this study the first in the literature to find a consistent link between REIT returns and any portion of direct property returns at short time horizons, in the context of a linear factor model. I then set up a natural laboratory to test the trading‐constraints explanation by examining the appreciation dependence of different types of REITs, which should be differently affected by the trading constraints. I find that returns to UPREITs, which are less affected by the constraints, have a stronger appreciation dependence than returns to regular REITs. I also perform a size test and find that large REITs, which are less affected by the constraints, have a stronger appreciation dependence than small REITs. When testing the effects of UPREIT and size characteristics simultaneously, I find a consistent UPREIT effect. I further find that Real Estate Operating Companies (REOCs), which are not subject to trading constraints, show short‐term property appreciation dependence. These findings offer strong support for the trading‐restrictions explanation.  相似文献   
427.
This paper investigates the effect of mobile payment on the adoption and use of traditional payment instruments such as cash, checks, and credit, debit and prepaid cards at the point of sale (POS). Data are from a 2012 representative survey on consumer payment choice in the United States. Using discrete-choice random utility models to simulate consumer behavior, the estimation provides two major findings. First, mobile payment does not replace physical payment cards, but is likely to substitute for paper-based payment methods such as cash and checks at the adoption stage. Second, mobile payment does not statistically significantly influence the choice of payment means at the POS in terms of usage. However, there is suggestive evidence that it is complementary to card payments and a substitute for paper-based payment instruments. The findings highlight the potential social welfare gains of mobile payment and provide key insights into challenging issues for the private industry sector. This paper furthermore offers novel evidence on the impact of mobile payment on the use and adoption of existing payment instruments and contributes to the literature on consumer payment choice.  相似文献   
428.
Low interest rates have been a major problem for the European life insurance industry. The implementation of Solvency II certainly has forced European life insurers to improve their risk management procedures and to buy long term bonds in order to handle the interest rate risk inherent to their liabilities. As a consequence, the industry meanwhile more or less seems to be able to cope with the problem of low interest rates. However, now the US central bank has started to hike rates. The Bank of Canada meanwhile has followed its southern neighbor. The changed monetary policy environment in North America might create new challenges for asset managers in the European life insurance industry. This paper provides some additional thoughts and empirical evidence about the linkages between US monetary policy and the European bond market employing techniques of time series analysis.  相似文献   
429.
Agglomeration and fair wages   总被引:1,自引:0,他引:1  
Abstract.  This paper implements a fair wage constraint into an analytically tractable core-periphery agglomeration model. This enables us to study the role of imperfect labour markets for the pattern of agglomeration. In the short run, a marginal increase in fair wage preferences leads to an unambiguous compression of the national factor price differential between skilled and unskilled labour, involving an increase in the unemployment rate of unskilled workers. In the long run, this mechanism renders full dispersion of an unstable equilibrium already at higher trade costs than in perfect labour markets. There is a tendency for fair wage preferences to enforce agglomeration.  相似文献   
430.
Taking a benchmark scenario, the current situation in Switzerland, and using a microsimulation technique, we compare the effectiveness of various income maintenance schemes for reducing inequality and poverty. A full negative income tax allowance designed to eliminate poverty is shown to reduce income inequality most drastically. An integrated federal linear tax rate of 62 percent is required to make it viable. Aggregate work hours are reduced by approximately 10 percent and average disposable income falls by 9.3 percent under such circumstances. A participation income restricted to adults in employment and covering 50 percent of subsistence costs is however shown to result in an unambiguous social welfare improvement over the current situation in Switzerland.  相似文献   
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