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71.
《国际农业可持续发展杂志》2013,11(4):279-291
Many researchers have noted that not only natural ecosystems but also landscapes actively modified by humans (engineered or designed ecosystems) can significantly impact the level of ecosystem goods and availability of services, thereby impacting human and social welfare. In New Zealand, agricultural lands are the largest area of engineered ecosystems on the national landscape. Study of the welfare effects of ecosystem services delivered by agricultural land can provide important insights into the management of engineered or designed ecosystems. This paper uses the contingent valuation method (CVM) and choice modelling to estimate values of four key ecosystem services: climate regulation, water regulation, soil retention and scenic views, for New Zealand land used for arable farming. 相似文献
72.
This article aims to investigate the impacts of climate change and of lower and more volatile crop price levels as currently observed in the European Union (EU) on optimal management decisions, average income and income risks in crop production in Western Switzerland. To this end, a bioeconomic whole-farm model has been developed that non-parametrically combines the crop growth model CropSyst with an economic decision model using a genetic algorithm. The analysis focuses on the farm level, which enables us to integrate a wide set of potential adaptation responses, comprising changes in agricultural land use as well as crop-specific fertilization and irrigation strategies. Furthermore, the farmer's certainty equivalent is employed as objective function, which enables the consideration of not only impacts on average income but also impacts on income variability.The study shows that that the effects of EU crop prices on the optimal management decisions as well as on the farmer's certainty equivalent are much stronger than the effects of climate change. Furthermore, our results indicate that the impacts of income risks on the crop farm's optimal management schemes are of rather low importance. This is due to two major reasons: first, direct payments make up a large percentage of the agricultural income in Switzerland which makes Swiss farmers less vulnerable to market and climate volatility. Second, arable crop farms in Switzerland have by law to cultivate at least four different crops. Due to these diverse cropping systems and high government direct payments risk does neither under climate change, market liberalization nor combinations thereof, play a very decisive role in arable farming in Switzerland. 相似文献
73.
This paper assesses the impact of the ‘decoupling’ reform of the Common Agricultural Policy on the labour allocation decisions of Irish farmers. The agricultural household decision‐making model provides the conceptual and theoretical framework to examine the interaction between government subsidies and farmers’ time allocation decisions. The relationship postulated is that ‘decoupling’ of agricultural support from production would probably result in a decline in the return to farm labour but it would also lead to an increase in household wealth. The effect of these factors on how farmers allocate their time is tested empirically using labour participation and labour supply models. The models developed are sufficiently general for application elsewhere. The main findings for the Irish situation are that the decoupling of direct payments is likely to increase the probability of farmers participating in the off‐farm employment market and that the amount of time allocated to off‐farm work will increase. 相似文献
74.
Peter Boxall Ann Hutchison Brigitta Wassenaar 《International Journal of Human Resource Management》2013,24(13):1737-1752
How do high-involvement work processes influence employee outcomes? In this paper, we use Vandenberg et al.'s [Vandenberg, R. J., Richardson, H. A., & Eastman, L. J. (1999). The impact of high involvement work processes on organisational effectiveness: A second order latent variable approach. Group and Organisational Management, 24, 300–339] elaboration of Lawler's [Lawler, E. E. (1986). High-involvement management: Participative strategies for improving organizational performance. San Francisco, CA: Jossey-Bass] model to test direct links and to explore skill utilisation and intrinsic motivation as mediators. Survey data were collected from a large New Zealand organisation providing distribution services and results were analysed through structural equation modelling. While there are important direct effects, the results demonstrate that both skill utilisation and intrinsic motivation transmit high-involvement processes into valuable outcomes for employees. The benefits to employees of such processes are direct but also lie in the way they make the work itself more motivating and enable them to deploy and grow their skills. This implies that forms of work organisation and supervision that offer workers greater opportunity for discretion, and involvement in the decisions that concern them, create the conditions for greater learning and, in turn, contribute to their well-being. 相似文献
75.
Theory of role modelling in organizations addresses the contents of role models, while the process of modelling has received little attention. In this paper, this gendered process is scrutinized from a constructionist perspective. Modelling starts with a comparison between an image of oneself with that of a person who serves as a proto-model; continues with idealization and/or composition of the traits of proto-models resulting in an image of a role, and ends with a comparison between such an image and an image of oneself, leading to directives for action. People do not model their behaviour on real persons, but on mental constructs they make loosely inspired by actual people. This conclusion forms a new argument against tokenism: it is never enough to employ one woman, as proto-models must be many and varied. 相似文献
76.
Trevor Davies Roger Elmer 《International Journal of Technology and Design Education》2001,11(2):163-180
The paper introduces the highly problematic nature of modelling in design and technology education and examines the relationship
between cognitive and concrete modelling. Its aim is to gain insight into what learners do, rather than what others say they
ought to do in their learning activities. The variety of purposes that educators have for learners’ modelling are discussed
through examining the contested curriculum justification for design and technology education itself. The paper proposes that
learners’ modelling cannot be extracted from the social milieu in which they act and it provides some insights of these social
influences through the analysis of two case studies. Their settings are a girls’ secondary school and a college of higher
education. Each case study is presented independently but organised with a common format to consider a) the impact of assessment
on learning intentions and outcomes; b) cultural influences on learning and modelling; c) social influences on learning and
modelling. A discussion of the emergent themes considers implications for teachers.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
77.
Jörg Rieger Florian Freund Frank Offermann Inna Geibel Alexander Gocht 《Journal of Agricultural Economics》2023,74(3):764-784
The implications of dietary changes for the environment and for human health are well documented, but the impacts on the agricultural sector are less well researched. We fill this gap by specifying scenarios in which European consumers' diets approximate the EAT-Lancet dietary recommendations to varying degrees and estimate the effects on agricultural production, incomes and emissions using an agro-economic modelling framework. The combination of different models allows for a detailed assessment of consequences for the agricultural sector from the global through European NUTS2 level to the farm level at different time scales. Shifting European consumption towards the EAT-Lancet recommendations leads to decreasing production of animal-based products, while production of fruits and vegetables increases sharply. The results indicate that the agricultural sector could benefit from a dietary shift, though the results are mixed at country, regional and farm levels. In particular, countries and regions that are highly specialised in animal farming are likely to lose income—at least in the short run—while regions with higher shares of vegetable and fruit farms can expect income gains. In Germany, pig and poultry farms may experience losses of up to 34% of their income, whereas farms with a high share of vegetables could gain more than 30% in income. Our results have implications for the policies to assist these extensive structural adjustments in response to widespread dietary changes. 相似文献
78.
Koert Van Ittersum Matthew T. G. Meulenberg Hans C. M. Van Trijp Math J. J. M. Candel 《Journal of Agricultural Economics》2007,58(1):1-23
Successful regional products, such as Florida oranges, Idaho potatoes and Parma ham, often have to compete against products passing themselves off as the authentic product using the exact same name. This unfair competition misleads consumers, discourages small‐ and medium‐sized enterprises (SMEs) from marketing products based on their region of origin, and may end up hurting rural economies. To protect consumers, and support SMEs and rural economies, many countries around the world have introduced regulations enabling SMEs to legally protect the names of their regional products. The success of these regulations largely depends on consumers’ appreciation of regional certification labels that inform consumers that the name of the regional product is protected and that it denotes the authentic product. To gain an understanding about consumers’ appreciation of regional certification labels, this paper investigates consumers’ image of these labels and proposes a model that relates this image to consumers’ willingness to buy and pay for protected regional products. The model is tested based on Regulation No. 2081/92 that was introduced by the EEC allowing European SMEs to protect their regional products and market their products with a protected‐designation‐of‐origin (PDO) label. Structural equation modelling results suggest that consumers’ image of regional certification labels consists of a quality warranty dimension and an economic support dimension, which positively relate to consumers’ willingness to buy and pay for the protected regional product. Protecting regional products and marketing them with regional certification labels may be beneficial for SMEs producing and marketing regional products. Policy and managerial implications are discussed. 相似文献
79.
Xinhui Yang Jie Zhang Qing Ye 《International Journal of Intelligent Systems in Accounting, Finance & Management》2020,27(3):125-141
This paper investigates the way that minimum tick size affects market quality based on an agent‐based artificial stock market. Our results indicate that stepwise and combination systems can promote market quality in certain aspects, compared with a uniform system. A minimal combination system performed the best to improve market quality. This is the first study to analyse tick size systems that remain at the theory stage and compare four types of system under the same experimental environment. The results suggests that a minimal combination system could be considered a new direction for market policy reform to improve market quality. 相似文献
80.