Consulta: creatorFacets:"Lauwers,   Ludwig H."
Registros recuperados: 31
Data/hora: 06/06/2024 18:04:17

Increase in milk price volatility experienced by Flemish dairy farmers: A change in risk profile
Provedor de dados: 31
Autores: van Winsen,   Frankwin; Wauters,   Erwin; Lauwers,   Ludwig H.; de Mey,   Yann; Van Passel,   Steven; Vancauteren,   Mark.
This paper reports on the increased volatility in the milk price received by Flemish dairy farmers and its consequence on the risk profile of selected Flemish dairy farms. The volatility of the milk price has doubled since January 2007. It is suggested that this increasing volatility could have a significant impact on the risk profile of dairy farms. Indeed our results show that the risk profile is changing depending on the volatility and average price for milk. However this change is not very substantial compared to some other subsectors. Also we show that in our case study of selected farms that if the milk price volatility doubles an average milk price increase of about 12% compensates for the increased volatility on return on assets. Finally this paper...
Tipo: Conference Paper or Presentation
Palavras-chave: Demand and Price Analysis; Livestock Production/Industries.
Ano: 2011
URL: http://purl.umn.edu/115758

An (in)efficiency based measurement of economic resilience
Provedor de dados: 31
Autores: Mondelaers,   Koen; Lauwers,   Ludwig H.
The ecosystem and the economic subsystem are interlinked. In fact, it is the overconsumption of scarce resources or the overproduction of bad outputs at economic system level that causes a great part of the imbalances at the ecosystem level. Some imbalances do not originate at the economic system level, but are due to external factors. Given the possibility of external shocks, respecting static sustainability thresholds is not a guarantee for system sustainability. In a dynamic setting, the concept of resilience is therefore helpful. In this paper we show how this concept can complement the traditional efficiency approach to come to a sustainable value creating economic system.
Tipo: Conference Paper or Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2011
URL: http://purl.umn.edu/114648

A FARM LEVEL ANALYSIS OF THE RELATION BETWEEN CAP REFORMS AND LOCAL ENVIRONMENTAL LEGISLATIONS: HOW AND IN WHICH EXTENT FLEMISH DAIRY FARMERS CAN FILL UP EXTRA MILK QUOTA?
Provedor de dados: 31
Autores: Van der Straeten,   Bart; Buysse,   Jeroen; Nolte,   Stephan; Marchand,   Fleur L.; Lauwers,   Ludwig H.; Claeys,   Dakerlia; Van Huylenbroeck,   Guido.
The agricultural policies shift gradually from EU-level organised market interventions to local organised environmental policies. This paper explores the growth possibilities of the Flemish dairy sector with the outlook of a quota abolishment as a case study of this policy shift. The dairy quota policy seems very restrictive for the highly profitable Flemish dairy sector, but the environmental restrictions from the manure regulation can limit the growth of the dairy sector as well. The paper uses a spatial multi-agent simulation model applied to a sample of 40.000 farms to estimate price development of emission rights and their possible impact on the growth of the dairy production. The results show that a higher milk production leads to higher prices for...
Tipo: Conference Paper or Presentation
Palavras-chave: Milk quota; Manure emission rights; Mathematical programming; Flanders; Agricultural and Food Policy; Industrial Organization; Research Methods/ Statistical Methods; C02; C61; L11; Q18.
Ano: 2008
URL: http://purl.umn.edu/44846

REGIONAL IDENTITY IN RURAL DEVELOPMENT: THREE CASE STUDIES OF REGIONAL BRANDING
Provedor de dados: 31
Autores: Messely,   Lies; Dessein,   Joost; Lauwers,   Ludwig H.
Within the globalizing world, regions and their identities are subjected to great pressure. At present, places are engaged in a process of “territorial competition” in an integrated world economy. The identity of the region can be used as a starting point to brand a region and differentiate it from others. In the regional branding process, the region as a whole becomes a product or brand and offers a “basket” of regional products and services. Regional branding is aimed at creating a more distinctive image or reputation, which helps to increase regional competitiveness. This paper discusses the possibility of regional identity as a mobilizing force for rural development, by studying best practice examples of regional branding. Using the grounded theory...
Tipo: Journal Article
Palavras-chave: Regional identity; Regional branding; Rural development; Community/Rural/Urban Development.
Ano: 2010
URL: http://purl.umn.edu/91126

Exploring production-theoretical insights for analyzing trade-offs between economic performance and environmental pressure at firm level
Provedor de dados: 31
Autores: Van Meensel,   Jef; Lauwers,   Ludwig H.; Van Huylenbroeck,   Guido; Van Passel,   Steven.
The objective of this paper is to construct a framework for analyzing trade-offs between economic performance and environmental pressure at firm level. Based on a literature review, partially conflicting economic-environmental trade-off paradigms are structured and five necessary conditions for adequate trade-off analysis are put forward. These conditions are delimitating a clear system for which trade-offs are analyzed, assessing the direction of causality between economic performance and environmental pressure, allowing for firm-specific trade-off differences, comprehensiveness with respect to management activities that can be evaluated and flexibility to analyze trade-offs under different market and environmental regulation conditions. To deal with the...
Tipo: Conference Paper or Presentation
Palavras-chave: Trade-off analysis; Production theory; Economic performance; Environmental performance; Materials balance; Environmental Economics and Policy; Farm Management; Production Economics; Productivity Analysis.
Ano: 2009
URL: http://purl.umn.edu/51725

Persistence of family farming, learning from its dynamics
Provedor de dados: 31
Autores: Calus,   Mieke; Lauwers,   Ludwig H.
Traditionally, the family farm has always been seen as a cornerstone of the agricultural production system. Given social, economic and political evidence (Calus, 2009), this organisational form might still continue to shape agricultural development. However, important changes in social and economic environment (e.g. industrialisation of agriculture, increased risk level and public vision on agriculture) become threats to the traditional model. A SWOT analysis of the family farms indicates the various intrinsic characteristics that make family farms resilient to changing conditions. Even in a changing economic and social landscape these aspects provide them with building blocks for creating new organisational forms or institutional arrangements. This paper...
Tipo: Conference Paper or Presentation
Palavras-chave: Family farm; Corporate farm; Peasant; SWOT; Consumer/Household Economics.
Ano: 2009
URL: http://purl.umn.edu/52857

MATERIALS BALANCE BASED MODELLING OF ENVIRONMENTAL EFFICIENCY
Provedor de dados: 31
Autores: Lauwers,   Ludwig H.; Van Huylenbroeck,   Guido.
A new method for analysing environmental efficiency, based on the materials balance, is proposed. With this method, an environmental allocative efficiency measure can be defined analogously to the more commonly used economic allocative efficiency. Nutrient surplus in pig fattening, a typical balance indicator, is used to illustrate the concept in a two input – one output case. The materials balance based efficiency analysis is elaborated using data envelopment analysis (DEA). Results are compared with those of more common, merely input or output oriented DEA approaches. A main conclusion is that, ignoring the balance feature of environmental issues such as nutrient surplus might be a main reason why traditional integral analyses of economic and...
Tipo: Conference Paper or Presentation
Palavras-chave: Environmental Economics and Policy.
Ano: 2003
URL: http://purl.umn.edu/25916

Derogation on the EU Nitrates Directive: does it make a difference?
Provedor de dados: 31
Autores: Claeys,   Dakerlia; Lauwers,   Ludwig H.; Marchand,   Fleur L.; Van Meensel,   Jef; Buysse,   Jeroen; Van der Straeten,   Bart; Van Huylenbroeck,   Guido.
The paper discusses an ex ante evaluation of the derogation on the Nitrates Directive for Flanders, Belgium, which is a case of intensive but highly productive livestock areas. The aim is to develop an accurate simulation model to detect small differences in manure surpluses caused by changes of manure production and/or utilization. The system of models consists of various modules to fine tune the calculations of manure production, fertilizing behaviour and manure allocation and disposal on and off farm. The results show that derogation may cause the existing manure surpluses to expire, if only nitrogen limits are considered and no transactions costs are taken into account. When also phosphate fertilization limits are considered, the increase in manuring...
Tipo: Conference Paper or Presentation
Palavras-chave: Nitrates Directive; Derogation; Modelling; Environmental Economics and Policy; Livestock Production/Industries.
Ano: 2008
URL: http://purl.umn.edu/44436

Optimisation of policy interventions in environmental quota
Provedor de dados: 31
Autores: Buysse,   Jeroen; Van der Straeten,   Bart; Nolte,   Stephan; Claeys,   Dakerlia; Lauwers,   Ludwig H.; Van Huylenbroeck,   Guido.
The paper analyses the governance choices in production quota with the Flemish nutrient production rights as a case. A static model of quota trade in the short run shows the inefficiency of discrete non-auctioned trade with fixed transaction costs. This model also shows that an obligation to quota sellers to stop their production stimulates structural change. A dynamic model of trade indicates that the measures taken to prevent speculative behaviour causes inefficiencies and stimulates overuse of quota if the penalties are too low. Finally, the dynamic model indicates that a flat rate reduction on traded quota combined with too low penalties for overuse stimulate the total production.
Tipo: Conference Paper or Presentation
Palavras-chave: Production rights; Quota; Dynamic programming; Transaction costs; Agricultural and Food Policy; Farm Management; Land Economics/Use.
Ano: 2010
URL: http://purl.umn.edu/61084

Modelling Farm Level Economic Potential for Conversion to Organic Farming
Provedor de dados: 31
Autores: Kerselaers,   Eva; Govaerts,   Wim; Lauwers,   Ludwig H.; De Cock,   Lieve; Van Huylenbroeck,   Guido.
A farm model is developed for simulating the potential income change resulting from conversion to organic farming. The model uses conventional farm data, taken from the Belgian FADN. Given the normative character of the model, and the impossibility of calibration to historical conversion behaviour, two model variants, a rigid and a flexible, are created to broaden the analysis scope. Moreover, extra attention is paid to the verification process and sensitivity analysis. Results reveal that the economic potential for conversion is rather high, if farmers are willing to change their farm management sufficiently. Furthermore, conversion potential depends on the farm type and conventional farm characteristics. The model finally proves to be an interesting tool...
Tipo: Conference Paper or Presentation
Palavras-chave: Organic farming; Conversion period; Farm model; Linear programming; Environmental Economics and Policy; Farm Management; C61; Q12.
Ano: 2005
URL: http://purl.umn.edu/24732

Policy intervention in a concentration permit market: efficiency analysis of obligatory manure processing in Flanders
Provedor de dados: 31
Autores: Van der Straeten,   Bart; Buysse,   Jeroen; Nolte,   Stephan; Lauwers,   Ludwig H.; Claeys,   Dakerlia; Van Huylenbroeck,   Guido.
Tipo: Conference Paper or Presentation
Palavras-chave: Livestock Production/Industries; Resource /Energy Economics and Policy.
Ano: 2011
URL: http://purl.umn.edu/114832

SUSTAINABLE EFFICIENCY OF FIRMS WHEN NEW SUSTAINABILITY TARGETS ARE INTRODUCED
Provedor de dados: 31
Autores: Mondelaers,   Koen; Kuosmanen,   Timo; Van Passel,   Steven; Buysse,   Jeroen; Lauwers,   Ludwig H.; Van Huylenbroeck,   Guido.
There is a high potential for simultaneously increasing sustainability of the earth system and economic development by removing inefficiencies currently present both at the production input and output side. In this paper a static view on sustainability is employed, by introducing capacity constraints as the boundaries above (or below) which the system cannot maintain its stable state. Currently these capacity constraints are often not respected. In this paper it is shown how the efficiency improvement pathway of an industry and the firms within it can be calculated to come to a sustainable, profit maximizing state, given the existence of these capacity constraints.
Tipo: Conference Paper or Presentation
Palavras-chave: Efficiency analysis; Sustainability; DEA; Directional distance vectors; Resource /Energy Economics and Policy.
Ano: 2011
URL: http://purl.umn.edu/114633

New Developments in Agricultural Policy Modelling and Consequences for Managing the Policy Analysis Systems
Provedor de dados: 31
Autores: Van Huylenbroeck,   Guido; Lauwers,   Ludwig H.; Fernagut,   Bruno.
Last decade, the importance of multifunctionality and environmental issues in agricultural policies has been growing. This shift in scope of agricultural policy instruments implies an adjustment of the conventional ex-ante policy analysis systems. New requirements on input and output parameters will be needed. The objective of this paper is to show how the input/output management can be improved. Focus is on how the information management by the system can enhance the policy analysis and decision making and facilitate information flow and social support from the stakeholder debate.
Tipo: Conference Paper or Presentation
Palavras-chave: Policy impact analysis; Joint production; Farmers' behaviour; Knowledge flow Organisation; Agricultural and Food Policy; C8; Q18.
Ano: 2006
URL: http://purl.umn.edu/25256

Food Certification Schemes as Private Institutions of Sustainability
Provedor de dados: 31
Autores: Mondelaers,   Koen; Lauwers,   Ludwig H.; Van Huylenbroeck,   Guido.
institutions of sustainability (PIoS), which are sets of rules that a series of private actors voluntary follow to reach a sustainability target. Within PIoS, a strong position on sustainability themes is used as a mean to maximize private utility. Consequently, there is a potential win-win situation for both the private actors and the society. Typical for these multistakeholder PIoS is their hybrid configuration. Ménard (2004) introduced the concept of hybrids as an intermediate between pure anonymous spot markets and firms as hierarchies. It is a governance structure where actors have transferred part of their autonomous property rights to others, in order to allow for some coordination between partners. One of the main examples of PIoS in the food...
Tipo: Presentation
Palavras-chave: Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety.
Ano: 2011
URL: http://purl.umn.edu/121993

Alternative Territorial Breakdowns of Statistics for Supporting Rural Policies
Provedor de dados: 31
Autores: Lauwers,   Ludwig H.; Kerselaers,   Eva; Lenders,   Sonia; Vervaet,   Mieke; Vervloet,   Dirk.
In order to support rural policy making with appropriate information, alternative territorial breakdowns of statistics are necessary. This paper shows how the widely used criterion of 150 inhabitants per km² can be fine tuned to better account for local specific conditions, in particular high population densities. Alternative population density thresholds are confronted with local perceptions of rurality, aggregated in a rurality index. The method is illustrated for two regions that differ in urbanisation level. The rurality index not only increases the discriminatory power, but also helps to find a less erroneous and more robust proxy for international comparable breakdowns of statistics.
Tipo: Conference Paper or Presentation
Palavras-chave: Rural development; Rurality index; OECD; Central limit theorem; Agricultural and Food Policy; C10; O18; R12.
Ano: 2005
URL: http://purl.umn.edu/24635

Cost-benefit analysis of abatement measures for nutrient emission from agriculture
Provedor de dados: 31
Autores: Wustenberghs,   H.; Broekx,   Steven; Van Hoof,   K.; Claeys,   Dakerlia; D'Heygere,   T.; D'Hooghe,   J.; Dessers,   R.; Huysmans,   T.; Lauwers,   Ludwig H.; Meynaerts,   E.; Vercaemst,   P.
In intensive animal husbandry areas surface water N and P concentrations often remain too high. The Water Framework Directive calls for additional nutrient emission abatement measures. Therefore, costs and benefits for possible agricultural measures in Flanders were first analysed in terms of soil balance surplus. Finally, abatement measures for agriculture, households and industry were set off against each other and ranked according to their cost-efficiency by the Environmental Costing Model. Increased dairy cattle efficiency, winter cover crops and increased pig feed efficiency turn out very cost efficient. Other agricultural measures are less cost efficient than for instance collective treatment for households and industry.
Tipo: Conference Paper or Presentation
Palavras-chave: Nitrogen and phosphorus abatement; Surface water; Cost efficiency; Environmental Economics and Policy; Livestock Production/Industries.
Ano: 2008
URL: http://purl.umn.edu/44245

Combining risk perception and risk attitude: A comprehensive individual risk behavior model
Provedor de dados: 31
Autores: van Winsen,   Frankwin; Wauters,   Erwin; Lauwers,   Ludwig H.; de Mey,   Yann; Van Passel,   Steven; Vancauteren,   Mark.
Although risk management in farming is a well-documented subject in scientific literature, this same literature is usually used only by other scientist and is not aiding individual farmers in their management. Risk perception and risk attitude are well described determinants of risk behaviour but rarely combined in an integrated approach for risk behaviour research. Furthermore in most literature risk attitude is taken as a given stable personality trait on which the optimal behaviour should be based. We argue that risk attitude can be manageable in order to derive optimal risk behaviour. Based on these findings we develop a comprehensive theoretical basic model on farmers risk behaviour. Furthermore a participatory approach involving the stakeholder, the...
Tipo: Conference Paper or Presentation
Palavras-chave: Risk management; Risk perception; Risk attitude; Risk behaviour; Risk and Uncertainty.
Ano: 2011
URL: http://purl.umn.edu/115749

Flexible quota constraints in positive mathematical programming models
Provedor de dados: 31
Autores: Buysse,   Jeroen; Van der Straeten,   Bart; Claeys,   Dakerlia; Lauwers,   Ludwig H.; Marchand,   Fleur L.; Van Huylenbroeck,   Guido.
To explain over- and underuse of available quota, Buysse et al. (2007) have integrated the shadow cost of the quota constraint in a quota flexibility function in a positive mathematical programming model. This method and central hypothesis, formulated and tested for the case of Belgian sugar beet farms, is in current paper extended and confirmed for the cases of Flemish dairy quota and manure emission rights. Despite the different organisation, objectives and implementations of the diverse quota systems, the results are similar. A higher utilisation of quota is significantly driven by the quota rent, but farm characteristics are also important and the effect declines with increasing quota rent. Regardless the quota, the dairy quota flexibility behaviour of...
Tipo: Conference Paper or Presentation
Palavras-chave: Quota; Flexibility; Positive Mathematical Programming; Farm model; Common Agricultural Policy; Agricultural and Food Policy; Demand and Price Analysis; Research Methods/ Statistical Methods.
Ano: 2008
URL: http://purl.umn.edu/6640

The effect of EU derogation strategies on the complying costs of the nitrate directive
Provedor de dados: 31
Autores: Van der Straeten,   Bart; Buysse,   Jeroen; Nolte,   Stephan; Lauwers,   Ludwig H.; Claeys,   Dakerlia; Van Huylenbroeck,   Guido.
Within the framework of the nitrate directive, member states have the possibility to apply for derogation, i.e. increasing fertilization standards under certain conditions. Several EU regions have made use of this possibility but all in a different way. In 2009, 6 different derogation policies were worked out. This paper focuses on the differences between the applied policies and makes an assessment of the impact of these differences on the application rate of derogation, the manure surplus and the costs to allocate the manure. Based on the MP-MAS model described by Van der Straeten et al. (2010) the different scenarios are applied on a single case area (Flanders) and the economic effects have been simulated. Results show large differences between the...
Tipo: Conference Paper or Presentation
Palavras-chave: Nitrate directive; MAS-model; Derogation; Flanders; Agricultural and Food Policy; Q12; Q18; Q51; Q52.
Ano: 2011
URL: http://purl.umn.edu/99426

BRANDING REGIONAL IDENTITY AS A DRIVER FOR RURAL DEVELOPMENT
Provedor de dados: 31
Autores: Messely,   Lies; Dessein,   Joost; Lauwers,   Ludwig H.
Within the globalizing world, regions and their identities are subjected to great pressure. At present, places are engaged in a process of “territorial competition” in an integrated world economy. The identity of the region can be used as a starting point to brand a region and differentiate it from others. In the regional branding process, the region as a whole becomes a product or brand and offers a “basket” of regional products and services. This paper discusses the possibility of regional identity as a mobilizing force for rural development, by studying best practice examples of regional branding. Using the grounded theory approach, we conducted interviews in three case regions: West Cork (Ireland), Groene Woud (the Netherlands) and Pajottenland...
Tipo: Conference Paper or Presentation
Palavras-chave: Identity; Region formation; Regional branding; Rural development; Agribusiness; Community/Rural/Urban Development; International Development.
Ano: 2009
URL: http://purl.umn.edu/57406

Effects of a flat rate introduction: shifts in farm activity and impact on farmers' income
Provedor de dados: 31
Autores: Marchand,   Fleur L.; Buysse,   Jeroen; Campens,   V.; Claeys,   Dakerlia; Fernagut,   Bruno; Lauwers,   Ludwig H.; Van der Straeten,   Bart; Van Huylenbroeck,   Guido.
Current thoughts on CAP changes, e.g. the "Health Check", emphasize the necessity to move away from payments based on historical receipts towards a "flatter rate" system. The aim of current research is to simulate the impact of a flat rate system (equal payments per hectare of cultivated land) compared to the current historical system (payments based on individual historic entitlements). Impact on production and income of arable, dairy and cattle farms of two different flat rate scenario's, is assessed with a farm-based sector model for Flanders. The model maximizes income at farm level, calibrated to observed farming behavior in 2001-2003. Farm data can be selected by farm type, size and region, simulations could be run for specific sub sectors, size...
Tipo: Conference Paper or Presentation
Palavras-chave: Positive Mathematical Programming; Farm model; Common Agricultural Policy; Payment Entitlements.; Agricultural and Food Policy; Agricultural Finance; Farm Management; Research Methods/ Statistical Methods.
Ano: 2008
URL: http://purl.umn.edu/6681

Modelling the effects of an abolition of the EU sugar quota on internal prices, production and imports
Provedor de dados: 31
Autores: Nolte,   Stephan; Buysse,   Jeroen; Van der Straeten,   Bart; Claeys,   Dakerlia; Lauwers,   Ludwig H.; Van Huylenbroeck,   Guido.
We apply a spatial price equilibrium model of the world sugar market to simulate an abolishment of the EU quota system in 2015/16. To overcome the normative nature of the approach, we calibrate the model by attaching a non-linear cost term to each trade flow. This is in some regards similar to positive mathematical programming. We suggest an economic interpretation and an econometric specification of the cost term. Production in the EU increases to almost 16 million tons. Twelve member states increase production, seven reduce it. Preferential imports are significantly reduced. Simulated effects are found to be more pronounced the higher the world market price.
Tipo: Conference Paper or Presentation
Palavras-chave: CAP; Structural change; Sugar; TRQ; Spatial modelling; Trade preferences; PMP; Agricultural and Food Policy; Farm Management; Land Economics/Use.
Ano: 2010
URL: http://purl.umn.edu/61346

Tradable Substitution Rights: Simulation of the Cost-Efficiency of a Nitrogen Reduction in the Pig Finishing Sector
Provedor de dados: 31
Autores: Carlier,   Peter Jan; Lauwers,   Ludwig H.; Mathijs,   Erik.
To comply with the European Nitrate Directive, the Flemish manure policy has been elaborated mainly on the base of command and control measures (maximum fertilisation limits etc.). In literature, however, tradable permits are described as a cost efficient and effective instrument. Applied to nutrient emission they might offer an alternative for the current, expensive manure policy. In this publication both policy instruments are compared by means of simulation models. Based on accountacy data from 190 pig finishing farms, it is shown that tradable rights may result in cost savings of over 88%, compared to the most cost efficient command and control model. This result indicates that tradable permits at least need to be considered as a plausible policy...
Tipo: Conference Paper or Presentation
Palavras-chave: Tradable permits; Agriculture; Command and control; Nitrogen; Linear programming; Livestock Production/Industries; C61; D23; H23; Q58; Q52.
Ano: 2005
URL: http://purl.umn.edu/24746

The foregone risk premium: a communicative and practical method for the evaluation of risk-return profiles in agriculture
Provedor de dados: 31
Autores: Wauters,   Erwin; De Cock,   Lieve; Wit,   Jan de; Lauwers,   Ludwig H.
Risk considerations have become increasingly important in nowadays agriculture, due to a variety of reasons. Surprisingly, the practice of formalized risk management is not widespread despite the huge amount of scientific literature on this topic. This discrepancy between risk science and extension is described by many authors. This paper presents a communicative method, rooted in financial economics, to evaluate risk-return profiles in a way that is communicative for individual farmers. The method is derived from the modern portfolio theory, in which individual assets are implicitly compared to the risk-return trade-off of that asset with the highest Sharpe ratio. We use this idea to compare individual risk-return profiles to a particular benchmark. The...
Tipo: Conference Paper or Presentation
Palavras-chave: Risk and Uncertainty.
Ano: 2011
URL: http://purl.umn.edu/115737

The sampling bias in multi-agent simulation models
Provedor de dados: 31
Autores: Buysse,   Jeroen; Frija,   Aymen; Van der Straeten,   Bart; Nolte,   Stephan; Lauwers,   Ludwig H.; Claeys,   Dakerlia; Van Huylenbroeck,   Guido.
For practical considerations, it is in some case impossible to simulate MAS models at population level. The current paper shows that MAS models applied to samples with heterogeneous costs of interactions between agents have biased results. Heterogeneous costs of interactions in MAS models can come from the spatial dimension in MAS models or from fixed costs per interaction. The paper presents two correction procedures to remove the sampling bias and to increase the reliability of the outcome. The correction procedures can be very promising for future applications of MAS models because it becomes possible to deploy more complex models without bias on more detailed datasets that are only available at sample level, which will be the case for country- or...
Tipo: Conference Paper or Presentation
Palavras-chave: MAS; Bias; Correction; Resampling; Agricultural and Food Policy; Q12; Q18; Q51; Q52.
Ano: 2011
URL: http://purl.umn.edu/99599

Organic farming and fair trade in developing country as a new agribusiness paradigm: Evidence from Mali
Provedor de dados: 31
Autores: Sinaba,   Famory; Dessein,   Joost; Lauwers,   Ludwig H.; Bastiaensen,   Johan; Teme,   Bino.
Organic farming and fair trade certified chains have emerged in West-Africa since the 1990s in answer to new alternative markets in developed countries. These chains, involving actors from North and South, are seen as an opportunity to sustainably valorise the small peasants agriculture in Africa and include the smallholders in global markets. Certification and labelling systems accompany these chains in developed countries. The aim of this article is to analyze the challenges for smallholders of this new North- South trade regime established by certificates and labels. This article uses the theory of Global Value Chains as theoretical framework. The empirical framework consists of four cases (organic sesame; organic- fair sesame; fair cotton and...
Tipo: Conference Paper or Presentation
Palavras-chave: Organic farming; Fair Trade; Smallholders; North-South trade; Certificates; Labels; Global markets; Value chains; Certification scheme; Local institution; Agribusiness; International Relations/Trade.
Ano: 2011
URL: http://purl.umn.edu/116006

Transition towards sustainability: Dutch greenhouse parks as a touchstone for Flemish clustering experiments
Provedor de dados: 31
Autores: Verguts,   V.; Dessein,   Joost; Lauwers,   Ludwig H.
Greenhouse horticulture can play a major role in Flemish rural development, regional economy and employment. However, the sector deals with structural problems. Scale increase of greenhouse firms is required for economic reasons, but high investments and risks make this quasi unsupportable for individual farmers. Clustering greenhouses into greenhouse parks is a possible way out. Through collaboration and mutual material exchanges, firms enjoy scale effects and eco-efficiency is enhanced without individual enlargement. The government is planning pilot projects to investigate possibilities of greenhouse parks in Flanders. Obviously, many obstacles are faced, such as spatial planning, coordination of policy levels and institutions and interactions with...
Tipo: Conference Paper or Presentation
Palavras-chave: Greenhouse parks; Transition; Resource /Energy Economics and Policy.
Ano: 2008
URL: http://purl.umn.edu/43602

From total farm to household risk: implication for risk management
Provedor de dados: 31
Autores: de Mey,   Yann; Wauters,   Erwin; van Winsen,   Frankwin; Vancauteren,   Mark; Van Passel,   Steven; Lauwers,   Ludwig H.
Modeling the farm level impact of risk management programs, policies and instruments is traditionally been done on a farm-level basis. Hence, farm simulation models typically use the behavioural assumption of profit or utility maximization is risk aversion taken into account. However, abundant – albeit indirect – evidence from different literature sources suggest that minimization of  household risk – being the chance of falling below a certain threshold level of household cash flow – might be more realistic behavioural assumption. In this paper, we present concepts of operational, financial, total farm and household risk. Further, using a stochastic simulation model on two typical Belgian dairy farms, we illustrate possible farmers responses in the...
Tipo: Presentation
Palavras-chave: Household risk; Typical dairy farms; Stochastic simulation; Household buffering capacity; Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/122470

Effectiveness of Nitrate Policy in Flanders (1990-2003): Modular Modelling and Response Analysis
Provedor de dados: 31
Autores: Veraet,   Mieke; Lauwers,   Ludwig H.; Lenders,   Sonia; Overloop,   Stijn.
The impact of current nitrate policy measures in Flanders is estimated. A modular modelling system has been developed for comparing response and pressure indicators and for decomposing the response impact of policy measures. Compared to 1990, the internalised manure surplus is reduced to zero, whereas the distance to target of the soil surface balance to the water quality standard dropped only with 58%. Source-linked and sink-related measures each account for about the half of the manure surplus reduction. The impact of abatement technologies is minor. The modular approach helps to unravel the discrepancy between pressure and response and to propose policy alternatives.
Tipo: Conference Paper or Presentation
Palavras-chave: Abatement technology; DPSIR scheme; Nitrogen pollution reduction; Agricultural and Food Policy; B41; C51; H21; K32.
Ano: 2005
URL: http://purl.umn.edu/24450

Using different groups of technological progress as input for sector modeling
Provedor de dados: 31
Autores: Vander Vennet,   B.; Lauwers,   Ludwig H.
This poster aims at describing different groups of technology use within a farm population and at delivering realistic prognoses of their future status as input for sector modeling. This because sector models are in many cases not based on reasonable technological progress estimations or too simplified as normative estimation or seen as mere extrapolation of past evolutions. The classification and utilization of technology groups is done for livestock activities, but illustrated hereafter for the finishing pigs activities. The research is worked out in three phases: • Organizational aspects of tuning information demand and supply; • Identification of technology groups; • Evolution of technology groups. Following techniques are used to identify the...
Tipo: Conference Paper or Presentation
Palavras-chave: Technology; Sector modeling; Induced innovation; Resource /Energy Economics and Policy.
Ano: 2008
URL: http://purl.umn.edu/44168

Fertilization: trade-offs between manure abatement and plant productivity
Provedor de dados: 31
Autores: Van der Straeten,   Bart; Buysse,   Jeroen; Marchand,   Fleur L.; Lauwers,   Ludwig H.; Claeys,   Dakerlia; Van Huylenbroeck,   Guido.
In 2005, 30% of the Flemish farms faced a manure excess, while at aggregated level still 9.7% of the emission rights were unused. This means that, despite the various possibilities, Flemish farmers do not succeed in an effective exchange of manure between farms. In current paper is shown how inorganic fertilizer use influences the use and exchange of organic nitrogen. Because of the mutual interdependency between organic and inorganic nitrogen emission rights (or quota), inorganic nitrogen use limits the emission rights for organic nitrogen. Utilisation of these emission rights are analysed as a trade-offs choice between plant productivity (use of inorganic nitrogen) and manure disposal, as the major abatement alternative of manure production. Farmers...
Tipo: Conference Paper or Presentation
Palavras-chave: Manure abatement; Nutrient emission rights; Tobit model; Crop Production/Industries.
Ano: 2008
URL: http://purl.umn.edu/43642