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51.
We set up a dynamic reduced form model of labour market participation for women who balance career and motherhood. The model accounts for the occurrence of future child birth and early retirement, and includes home production; however, it does not require the estimation of a structural model. Careful implementation of pension institutions can return optimal life patterns of participation without the need of a structural approach. The weaker theoretical framework is compensated by the rich spectrum of possible policy simulations. As illustration, we simulate the effect of two tax credits policy options on the hazard rate out of work. 相似文献
52.
Mariia Belaia Michael Funke Nicole Glanemann 《Environmental and Resource Economics》2017,67(1):93-125
The risk of catastrophes is one of the greatest threats of climate change. Yet, conventional assumptions shared by many integrated assessment models such as DICE lead to the counterintuitive result that higher concern about climate change risks does not lead to stronger near-term abatement efforts. This paper examines whether this result still holds in a refined DICE model that employs the Epstein–Zin utility specification and that is fully coupled with a dynamic tipping point model describing the evolution of the Atlantic thermohaline circulation (THC). Risk is captured by the possibility of a future collapse of the circulation and it is nourished by fat-tailed uncertainty about climate sensitivity. This uncertainty is assumed to resolve in the middle of the second half of this century and the near-term abatement efforts, which are undertaken before that point of time, can be adjusted afterwards. These modelling choices allow posing the question of whether aversion to this specific tipping point risk has a significant effect on near-term policy efforts. The simulations, however, provide evidence that it has little effect. For the more likely climate sensitivity values, a collapse of the circulation would occur in the more distant future. In this case, acting after learning can prevent the catastrophe, implying the remarkable insensitivity of the near-term policy to risk aversion. For the rather unlikely and high climate sensitivity values, the expected damage costs are not great enough to justify taking very costly measures to safeguard the THC. Our simulations also provide some indication that risk aversion might have some effect on near-term policy, if inertia limiting the speed of decarbonisation is accounted for. As it is highly uncertain how restrictive this kind of inertia will be, future research might investigate the effects of risk aversion if additional uncertainty about inertia is considered. 相似文献
53.
The role of the nurse leader in patient safety can be characterized as follows: to establish the right culture; to infuse that culture with shared leadership so that the expert voice at the bedside is really defining the work; to possess the competencies necessary to coordinate and advance this complex initiative; and to forge both internal and external partnerships, because we will not be able to do this work alone. To further the work on this topic, nurse leaders who participated in the Nursing Leadership Congress are committed to identifying additional resources to help nurse leader colleagues drive patient safety efforts throughout their organizations. 相似文献
54.
Shelly Ikeme Luca Weltert Kevin M. Lewis Gerhard Bothma Daniela Cianciulli Nicole Pay 《Journal of medical economics》2018,21(3):273-281
Background: A recent randomized controlled trial showed that patients undergoing ascending aorta surgery treated with HEMOPATCH to control bleeding had a significantly better hemostasis success rate than with dry or wet gauze compression or similar standard of care (SOC).Objective: To compare the cost-effectiveness using two different agents for hemostasis (HEMOPATCH vs dry or wet gauze compression or similar SOC) in cardiac surgery from the European hospital perspective.Methods: A literature-based cost-effectiveness model estimating average cost per successful hemostasis event was developed based on the hemostasis efficacy difference (HEMOPATCH?=?97.6%, SOC?=?65.8%, p?<?.001). Additional clinically significant end-points studied in the trial (blood transfusions and surgical revisions) were also analyzed. It was assumed that each surgery utilized two units of HEMOPATCH (dimensions of 4.5?×?9?cm) and two units of SOC. Product acquisition costs for HEMOPATCH and SOC were included along with outcome-related costs derived from the literature and inflation-adjusted to 2017 EUR and GBP. Results are presented for an average hospital with an annual case load of 574 cardiac surgeries. One-way and probabilistic sensitivity analyses were performed.Results: Considering only product acquisition cost, HEMOPATCH had an incremental cost-effectiveness ratio (ICER) of €1,659, €1,519, €1,623, and £1,725 per hemostasis success when compared to SOC for Italy, Spain, France, and the UK, respectively. However, when considering the cost and potential difference in the frequency of transfusions and revisions compared to SOC, the use of HEMOPATCH was associated with an annual reduction of six revisions and 60 transfusions, improving the ICER to €1,440, €1,222, €1,461, and £1,592, respectively. Sensitivity analysis demonstrated model robustness.Conclusions: This analysis supports the use of HEMOPATCH over SOC in cardiac surgery in European hospitals to improve hemostasis success rates and potential cost offsets from reduced transfusions, complications, and surgical revisions. 相似文献
55.
Understanding market responses to climate change impacts has important implications for the sustainability of Australia's winter tourism destinations. Utilising a framework incorporating push–pull tourist motivations and the theory of leisure substitutability, this study sought to explore how winter tourists in Australia will adapt to changes in snow cover in Australia's alpine regions under future climate change scenarios. The results of a questionnaire completed by 231 respondents indicated that tourist motivations were related to behavioural adaptation, and that there is a general preference among the current winter market for spatial substitution in the event of poor snow. Those motivated by recreation specialisation or snow-related attributes were likely to opt for spatial substitution, while tourists motivated by self-expression and après ski activities displayed resilience to poor snow conditions. The results demonstrate a clear division between leisure-driven tourists who valued participation in sport, and experience-driven tourists, who displayed higher resilience to reduced snow under projected climate change scenarios. These results have practical implications for winter tourism destinations, both in terms of targeting experience-driven tourists in the case of reduced snow as well as the longer term sustainability and viability of winter tourism destinations. 相似文献
56.
Delisting is frequently used by retailers to strengthen their negotiating position against manufacturers. However, both parties have to consider the risk of potential reactions when customers are faced with a reduced or modified assortment and thus, different choice. This research investigates customers' switching behavior if a brand is delisted by taking into account context theory. The results of two real-life quasi-experiments reveal that customer responses depend significantly on the context and that manufacturers may encounter substantially larger losses than retailers. Two further online experiments support the hypotheses on the existence of negative context effects for brand removals. Managerial implications can be derived and recommendations for further research are developed. 相似文献
57.
Food insecurity, child malnutrition, and land degradation remain persistent problems in sub‐Saharan Africa. Agricultural sustainable intensification (SI) has been proposed as a possible solution to simultaneously address these challenges. Yet there is little empirical evidence on if agricultural management practices and inputs that contribute to SI from an environmental standpoint do indeed improve food security or child nutrition. We use three waves of data from the nationally‐representative Tanzania National Panel Survey to analyze the child nutrition effects of rural households’ adoption of farming practices that can contribute to the SI of maize production. We group households into four categories based on their use of three soil fertility management practices on their maize plots: “Nonadoption”; “Intensification” (use of inorganic fertilizer only); “Sustainable” (use of organic fertilizer, maize–legume intercropping, or both); and “SI” (joint use of inorganic fertilizer with organic fertilizer and/or maize–legume intercropping). The results from multinomial endogenous treatment effects models with the Mundlak–Chamberlain device suggest that use of practices in the “SI” category is associated with improvements in children's height‐for‐age and weight‐for‐age z‐scores relative to “Nonadoption,” particularly for children aged 25–59 months. These effects appear to come through improvements in both crop income and productivity. 相似文献
58.
This research aims to empirically determine which factors best explain business to business adoption of a radical, high-tech innovation early in the diffusion process. Early lifecycle data collection provides insights about the differences in determinants of adoption at different times in the product diffusion process. The results indicate that differences do exist between the determinants of early adoption, intent to adopt later, and unawareness of the innovation. The influencers of earliest adopters appear to be innovation-focused: the perceived benefits of the innovation as well as the strength of the producer network positively relate to early adoption; early adopters also tend to perceive the technology in the innovation as less different than previous technology than do those who intend to adopt later. The influence of a champion within the adopting firm, the ability of the firm to sense and respond to new technology, and the depth of technology knowledge within the adopting firm are significant influencers across multiple stages of diffusion, showing that firm-internal traits are particularly important influencers of adoption. Laggard firms are missing the critical firm traits that lead to information gathering and understanding of innovations. In addition to contributing to adoption research theory and methodology, this research has implications for innovation-marketing and innovation-adopting firms. 相似文献
59.
60.
The present paper addresses the problem of computing implied volatilities of options written on a domestic asset based on implied volatilities of options on the same asset expressed in a foreign currency and the exchange rate. It proposes an original method together with explicit formulae to compute the at-the-money implied volatility, the smile's skew, convexity, and term structure for short maturities. The method is completely free of any model specification or Markov assumption; it only assumes that jumps are not present. We also investigate how the method performs on the particular example of the currency triplet dollar, euro, yen. We find a very satisfactory agreement between our formulae and the market at one week and one month maturities. 相似文献