排序方式: 共有24条查询结果,搜索用时 15 毫秒
1.
Even though diversified agroforestry systems can provide sustainable livelihoods and a resilient production of different goods, adoption remains limited in Bolivia. We examine major obstacles to agroforestry adoption and possible incentives proposed by farmers and civil-society organizations, and relate them to governance and international mechanisms that might play a role in agroforestry adoption. Market access for produce from diversified agroforestry remains difficult, as does its processing and transport. Moreover, farmers have difficulties in achieving the quantities and homogenous quality demanded by markets in the major cities. But most importantly, farmers and civil-society organizations saw little government support, although ‘ecological production in harmony with Mother Earth’ is prescribed by law and the constitution. Agroforestry farmers needed support most urgently in the initial phase, when investment costs are high and returns low. They suggested affordable credits, subsidies for diversified farming systems, and insurance against fire. We identified important albeit small steps towards developing markets for agroforestry products, but government support – mostly in the form of diesel subsidies, materials, and infrastructure – mainly benefitted large-scale monocultures and cattle ranching. In response to this, interviewees opted for strengthening farmers’ organizations, for demanding support with the help of civil-society organizations, and for disseminating best practices. 相似文献
2.
This paper is concerned with the use of a Bayesian approach to fuzzy regression discontinuity (RD) designs for understanding the returns to education. The discussion is motivated by the change in government policy in the UK in April of 1947, when the minimum school leaving age was raised from 14 to 15—a change that had a discontinuous impact on the probability of leaving school at age 14 for cohorts who turned 14 around the time of the policy change. We develop a Bayesian fuzzy RD framework that allows us to take advantage of this discontinuity to calculate the effect of an additional year of education on subsequent log earnings for the (latent) class of subjects that complied with the policy change. We illustrate this approach with a new dataset composed from the UK General Household Surveys. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献
3.
Liana E. Fox 《Review of Income and Wealth》2016,62(4):706-723
Utilizing longitudinal data from the Panel Study of Income Dynamics (PSID), this paper examines the relationship between parental wealth and intergenerational income mobility for black and white families. I find that total parental wealth is positively associated with upward mobility for low‐income white families, but is not associated with reduced likelihood of downward mobility for white families from the top half of the income distribution. Conversely, I find that total parental wealth does not have the same positive association for low‐income black families, while home ownership may have negative associations with the likelihood of upward mobility for these families. However, for black families from the top half of the income distribution, home equity is associated with a decreased likelihood of downward mobility, suggesting a heterogeneous relationship between home ownership and mobility for black families. 相似文献
4.
5.
Mester Liana Eugenta Bugnar Nicoleta Georgeta Mester Dinu Grigore Petrica Dana Maria 《中国经济评论(英文版)》2010,(9):13-21
Romania has the potential of resources, labor and real capacity to adapt to the gait of a global economic competition. But it required a long term policy and environment which could support this potential value. If not, we will risk turning into a consumer economy, consumption will not be funded on internal production and become supplier of labor services for peripheral. In the context of economic crisis, Romanian furniture retains its significant competitive advantages, including the price in export markets. The most important markets for exporters of furniture from Romania are Ukraine and Russia, markets with great potential, but affected by problems such as devaluing local currencies, and recently, imposing new duties. 相似文献
6.
7.
Marc Evans Liana K. Billings Jonas Håkan-Bloch Ulla Slothuus Trine J. Abrahamsen Andreas Andersen 《Journal of medical economics》2018,21(4):340-347
Aims: To obtain estimates of the relative treatment effects between insulin degludec/liraglutide (IDegLira) and insulin glargine U100/lixisenatide (iGlarLixi) in patients with type 2 diabetes mellitus (T2DM) uncontrolled on basal insulin therapy.Materials and methods: Data from phase 3 trials providing evidence for estimating the relative efficacy and safety of IDegLira vs iGlarLixi in patients uncontrolled on basal insulin-only regimens were used in this analysis. Outcomes of interest were changes in HbA1c, body weight and insulin dose, and rate ratio of hypoglycemia. The indirect comparison of the reported trial findings followed the principles of Bucher et al.Results: IDegLira was estimated to provide a 0.44 [95% CI?=?0.17–0.71] %-point reduction in HbA1c compared with iGlarLixi. Body weight was reduced by 1.42 [95% CI?=?0.35–2.50] kg with IDegLira compared with iGlarLixi. Insulin dose was comparable between the two interventions. The rate of severe or blood glucose-confirmed (self-measured plasma glucose [SMPG]?≤?3.1?mmol/L) hypoglycemia with IDegLira was approximately half that of iGlarLixi (rate ratio?=?0.51 [95% CI?=?0.29–0.90]). However, using the American Diabetes Association definition of documented symptomatic hypoglycemia (SMPG ≤3.9?mmol/L) the rate was comparable between the two treatments (rate ratio?=?1.07 [95% CI?=?0.90–1.28]).Limitations: The assumptions made in the indirect comparison and differences between the included trials in baseline HbA1c levels, previous use of sulfonylureas, definitions of hypoglycemia, presence or absence of run-in period, the different duration of the trials, and the cross-over design of one of the trials.Conclusions: The results of this indirect treatment comparison demonstrate that, among patients with T2DM uncontrolled on basal insulin, treatment with IDegLira results in a greater reduction of HbA1c and a greater reduction in body weight compared with iGlarLixi at similar insulin doses. 相似文献
8.
Since empirical studies have shown that cannabis users are much more likely to initiate hard drug use, a causal linkage has been suggested (‘gateway hypothesis’). However, individual differences in proneness and accessibility to drugs provide alternative non‐causal explanations for the observed drug use pattern. We propose a Bayesian estimation and predictive framework to analyze the effects and relative importance of previous cannabis use, proneness and accessibility factors on hard drug initiation and to explore possible policy implications. We employ a novel model specification, motivated by four gateway transmission channels, to analyze data from a recent Norwegian survey of young adults. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献
9.
10.