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First Empirical Evidence (first + empirical_evidence)
Selected AbstractsDie reformierte Gründungsförderung für Arbeitslose , Chancen und RisikenPERSPEKTIVEN DER WIRTSCHAFTSPOLITIK, Issue 2 2009Marco Caliendo In 2003, the "start-up-subsidy" (Existenzgründungszuschuss) was added to the existing "bridging-allowance" (Überbrückungsgeld) and the two programs together led to a strong increase in the number of supported start-ups. In 2006 both instruments were merged to the "start-up allowance" (Gründungszuschuss). Since the bridging allowance has been evaluated as effective and efficient and the start-up-subsidy reached new target groups, the latest reform shows several shortcomings. First of all, an end of the start-up boom is to be expected with the newly attracted target groups not being reached anymore. Secondly, the design of the "start-up allowance" is suboptimal, where efficiency losses can be expected if participants aim at maximizing social transfers. First empirical evidence from data of 2007 supports most of these expectations. [source] Quantifying carbon sequestration as a result of soil erosion and deposition: retrospective assessment using caesium-137 and carbon inventoriesGLOBAL CHANGE BIOLOGY, Issue 12 2007TIMOTHY ANDREW QUINE Abstract The role of soil erosion in the global carbon cycle remains a contested subject. A new approach to the retrospective derivation of erosion-induced quantitative fluxes of carbon between soil and atmosphere is presented and applied. The approach is based on the premise that soil redistribution perturbs the carbon cycle by driving disequilibrium between soil carbon content and input. This perturbation is examined by establishing the difference between measured carbon inventories and the inventories that would be found if input and content were in dynamic equilibrium. The carbon inventory of a profile in dynamic equilibrium is simulated by allowing lateral and vertical redistribution of carbon but treating all other profile inputs as equal to outputs. Caesium-137 is used to derive rates of vertical and lateral soil redistribution. Both point and field-scale estimates of carbon exchange with the atmosphere are derived using the approach for a field subject to mechanized agricultural in the United Kingdom. Sensitivity analysis is undertaken and demonstrates that the approach is robust. The results indicate that, despite a 15% decline in the carbon content of the cultivation layer of the eroded part of the field, this area has acted as a net sink of 11 ± 2 g C m,2 yr,1 over the last half century and that in the field as a whole, soil redistribution has driven a sink of 7 ± 2 g C m,2 yr,1 (6 ± 2 g C m,2 yr,1 if all eroded carbon transported beyond the field boundary is lost to the atmosphere) over the same period. This is the first empirical evidence for, and quantification of, dynamic replacement of eroded carbon. The relatively modest field-scale net sink is more consistent with the identification of erosion and deposition as a carbon sink than a carbon source. There is a clear need to assemble larger databases with which to evaluate critically the carbon sequestration potential of erosion and deposition in a variety of conditions of agricultural management, climate, relief, and soil type. In any case, this study demonstrated that the operation of erosion and deposition processes within the boundaries of agricultural fields must be understood as a key driver of the net carbon cycle consequences of cultivating land. [source] The balance sheet channel of monetary policy: first empirical evidence for the euro area corporate bond marketINTERNATIONAL JOURNAL OF FINANCE & ECONOMICS, Issue 3 2004Gabe de Bondt Abstract The balance sheet channel of monetary policy working through the euro area corporate bond market is important, as shown by empirical results based on different methods for the first two and a half years since the introduction of the euro. The external finance premium on corporate bonds reflects, among other factors, monetary policy and leads real economic activity in the euro area. Copyright © 2004 John Wiley & Sons, Ltd. [source] Nonfinancial Performance Measures and Promotion-Based IncentivesJOURNAL OF ACCOUNTING RESEARCH, Issue 2 2008DENNIS CAMPBELL ABSTRACT In this paper, I examine the sensitivity of promotion and demotion decisions for lower-level managers to financial and nonfinancial measures of their performance and investigate the extent to which the behavior of lower-level managers reflects promotion-based incentives. Additionally, I test for learning versus effort-allocation effects of promotion-based incentives. I find that promotion and demotion decisions for store managers of a major U.S.-based fast-food retailer (QSR) are sensitive to nonfinancial performance measures of service quality and employee retention after controlling for financial performance. The likelihood of demotion in this organization is also sensitive to nonfinancial performance on the dimension of service quality, while the probability of exit is primarily sensitive to financial performance measures rather than nonfinancial performance measures. I also find evidence that the behavior of lower-level managers is consistent with the incentives created by the weighting of nonfinancial performance measures in promotion decisions. Managers in locations where there is a higher ex ante probability of promotion and a higher potential reward upon promotion demonstrate significantly higher levels and rates of performance improvement in service quality. Finally, consistent with promotion-based incentives inducing both effort-allocation and learning effects, I find that performance-improvement rates for service quality: (1) are higher in prepromotion periods in markets where promotions occur, (2) decrease immediately after the occurrence of a promotion in the same market area, and (3) remain higher than in markets where promotions do not occur. These findings provide some of the first empirical evidence on an alternative to the explicit weighting of nonfinancial metrics in compensation contracts as a mechanism for generating improvements in nonfinancial dimensions of performance. [source] Experimental determination of the periodicity of incremental features in enamelJOURNAL OF ANATOMY, Issue 1 2006T. M. Smith Abstract Vital labelling of hard tissues was used to examine the periodicity of features of dental enamel microstructure. Fluorescent labels were administered pre- and postnatally to developing macaques (Macaca nemestrina), which were identified histologically in dentine and related to accentuated lines in enamel, allowing for counts of features within known-period intervals. This study demonstrates that cross-striations represent a daily rhythm in enamel secretion, and suggests that intradian lines are the result of a similar 12-h rhythm. Retzius lines were found to have a regular periodicity within individual dentitions, and laminations appear to represent a daily rhythm that also shows 12-h subdivisions. The inclusion of intradian lines and laminations represents the first empirical evidence for their periodicities in primates; these features frequently complicate precise measurements of secretion rate and Retzius line periodicity, which are necessary for determination of crown formation time. The biological basis of incremental feature formation is not completely understood; long-period features may result from interactions between short-period rhythms, although this does not explain the known range of Retzius line periodicities within humans or among primates. Studies of the genetic, neurological and hormonal basis of incremental feature formation are needed to provide more insight into their physiological and structural basis. [source] Body mass change strategies in blackbirds Turdus merula: the starvation,predation risk trade-offJOURNAL OF ANIMAL ECOLOGY, Issue 2 2005R. MACLEOD Summary 1It is theoretically well established that body mass in birds is the consequence of a trade-off between starvation risk and predation risk. There are, however, no studies of mass variation from sufficiently large wild populations to model in detail the range of diurnal and seasonal mass change patterns in natural populations and how these are linked to the complex environmental and biological variables that may affect the trade-off. 2This study used data on 17 000 individual blackbirds Turdus merula to model how mass changes diurnally and seasonally over the whole year and over a wide geographical area. Mass change was modelled in respect of temperature, rainfall, day length, geographical location, time of day and time of year and the results show how these mass changes vary with individual size, age and sex. 3The hypothesis that seasonal mass is optimized over the year and changes in line with predictors of foraging uncertainty was tested. As theory predicts, reduced day length and reduced temperature result in increased mass and the expected seasonal peak of mass in midwinter. 4The hypothesis that diurnal mass gain is optimized in terms of starvation,predation risk trade-off theory was also tested. The results provide the first empirical evidence for intraspecies seasonal changes in diurnal mass gain patterns. These changes are consistent with shifts in the relative importance of starvation risk and predation risk and with the theory of mass-dependent predation risk. 5In winter most mass was gained in the morning, consistent with reducing starvation risk. In contrast, during the August,November non-breeding period a bimodal pattern of mass gain, with increases just after dawn and before dusk, was adopted and the majority of mass gain occurred at the end of the day consistent with reducing mass-dependent predation risk. The bimodal diurnal mass gain pattern described here is the first evidence that bird species in the wild gain mass in this theoretically predicted pattern. [source] Seasonal sex role changes in the blenniid Petroscirtes breviceps, a nest brooder with paternal careJOURNAL OF FISH BIOLOGY, Issue 1 2006J. Shibata The plasticity of the sex roles in the blenniid fish Petroscirtes breviceps, a nest brooder with exclusive paternal care, was studied throughout an 8 month breeding season. Males performed most courtships early and late in the breeding season, whereas females performed most in the middle of the season. These results indicated that the sex of individuals initiating courtship changed seasonally, with courtship role reversal in the middle of the season. Intrasexual aggression in both sexes occurred much more frequently in mid-season than in the early and late seasons. Males frequently fought when available nest sites were limited, regardless of the presence of females, suggesting that males competed for nests in order to qualify to mate (resource competition). In contrast, courting females fought only in mid-season, when females' relative success in entering nests decreased, indicating that females competed for limited mating opportunities (mating competition). The reversed courtship roles and female mating competition in mid-season suggested that the sex roles in P. breviceps changed seasonally from the conventional roles to reversed roles and back again during one breeding season. This study provides the first empirical evidence of multiple changes in the sex roles of animals within a breeding season. [source] TRUST, INEQUALITY AND THE SIZE OF THE CO-OPERATIVE SECTOR: CROSS-COUNTRY EVIDENCEANNALS OF PUBLIC AND COOPERATIVE ECONOMICS, Issue 2 2009Derek C. Jones ABSTRACT:,We provide the first empirical evidence on the determinants of differences in the size of the cooperative sector around the world. Our key data have been recently released by the ICA and are integrated with other standard sources, such as data from the World Values surveys. In our empirical work we concentrate on the links between inequality and trust and cooperative incidence and undertake selectivity correction estimates as well as a series of robustness checks. Consistent with theory we find strong support for the proposition that trust plays a causal role in accounting for differences in co-operative incidence. Also consistent with theory, we find support (albeit much weaker) for the role of inequality. Further support for our findings flows from our estimates for conventional, listed firms, where we do not find that trust and inequality play similar roles in accounting for the variation in the incidence of large listed firms across countries. [source] What does the community think about lifespan extension technologies?AUSTRALASIAN JOURNAL ON AGEING, Issue 4 2006The need for an empirical base for ethical, policy debates Objectives:,This paper examines public understandings of possibilities for increasing life expectancy, interest in taking up lifespan-extending interventions, and motivations influencing these intentions. Methods:,Structured interviews were conducted with 31 adults, aged 50 and over. Results:,Participants believed that technological advances would increase life expectancy but questioned the value of quantity over quality of life. Life in itself was not considered valuable without the ability to put it to good use. Participants would not use technologies to extend their own lifespan unless the result would also enhance their health. Conclusions:,These findings may not be generalisable to the general public but they provide the first empirical evidence on the plausibility of common assumptions about public interest in ,anti-ageing' interventions. Surveys of the views of representative samples of the population are needed to inform the development of a research agenda on the ethical, legal and social implications of lifespan extension. [source] | |||||||||||||