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CURRENT RESEARCH and EXPERTISE AREASDr. Ruerd
Ruben, Associate ProfessorWageningen University,
The NetherlandsDevelopment Economics Group
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Research Subjects Expertise Areas

• Professional Background
• Msc Development Economics (Free Univrersity
  Amsterdam) - 1980
  
• PhD Development Economics (Free University
  Amsterdam) - 1996
  
• Advisor Department Agricultural Economics, UNAN
  Nicaragua - 1981-85
  
• Staff Land Reform Programme Nicaragua - 1985-88
• Director Office for Rural Development Studies,
  Costa Rica - 1989-92
  
• Research Programme Sustainable Development,
  Wageningen - 1992-96
  
• Research Programme on Bio-economic Modelling -
  1996-2001
  
• Wageningen-IFPRI Joint Programme on less-favoured
  areas - 2001
  

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Research Subjects Expertise Areas

• Research Assignment
• 1. Farm Household Economics
• resource use decisions
• welfare and sustainability implications
• 2. Market Integration
• land, labour and finance
• commodity value chains

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Research Subjects Expertise Areas

• Research Topics
• Bio-economic modelling (Mali, Costa Rica, China,
  Ethiopia)
  
• Climate Change Analysis
• Off-farm employment and Migration (Honduras,
  India, Burkina Faso)
  
• Rural credit, savings and investment behaviour
  (East Africa)
  
• Agrarian land markets (Nicaragua)
• International Supply Chains (fish, vegetables,
  fruit)
  

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Research Subjects Expertise Areas

• Bio-economic Modelling
• Linking Farm Household Models with Agroecological
  Models
  
• Assessment of current and potential technologies
• Farm Household, Village and Regional Level
• Mathematical Programming and Econometric Methods
• Aggregation routines and Simulation procedures
• (ex ante) Appraisal of Feasible Policy
  Instrument
  
• Trade-offs between FHH Welfare and Nutrient/OM
  Balances
  
• Policies for win-win scenarios

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Research Subjects Expertise Areas
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• Mali Response elasticities of introducing a 1
  percent fertilizer subsidy(percentage change)
  
• Biophysical Farm household
  Regional development
  
• Optimization welfare objectives (market
  clearance)
  
• WELFARE INDICATORS
• per capita income 0.15 0.28 0.08
• food production 0.10 -0.85 -0.49
• food consumption - 0.01 -0.04
• off-farm labour 0.00 -9.62 0.00
• SUSTAINABILITY INDICATORS
• organic matter balance 0.68 -0.40 0.63
• nitrogen balance 0.51 -0.94 0.98
• phosphate balance 0.07 -0.99 10.79
• INPUT INTENSITY
• labour per ha 0.09 0.07 0.07
• PRODUCTION STRUCTURE
• livestock (no. TLU) 0.00 -0.10 0.03
• cotton 0.98 5.98 0.32
• fallow 0.09 -78.75 0.00
• cereals -0.35 -0.02 -0.01

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Research Subjects Expertise Areas

Mali Supply Response Estimates
(Changes in Goals due to a 10 change in
Instrument variables) Revenue C-Balance Cot
ton Price increase 5 -1
Fertilizer Price decrease 2 9
TC decrease 2 5
Credit Supply 3 -2
Head tax -2 0 Land Tax -1
1 Source Kuyvenhoven, Ruben Kruseman
(1999)
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Research Subjects Expertise Areas

• Factor Market Dynamics
• Off / non-farm Employment
• labour markets and risk management
• expenditure effects (migration SWC investment)
• substitution effects
• Land markets
• land lease and transfers
• land titling and farmers risk attitudes
• Rural Finance
• savings and credit
• insurance

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Research Subjects Expertise Areas

• International Value Chains (Farmers
  Supermarkets)
  
• Food Safety Attributes (consumer demand)
• Chain integration (production, processing,
  handling)
  
• Contract Conditions
• Consumer Preferences Chain Organization
• Taste Governance
  Regimes Production
  
• Colour Contracts
  Networks Processing
  
• Size for timely
  delivery Packaging
  
• Freshness of safe
  products Storage
  
• Safety Health Transport
• Environment Retail

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Transporting the harvest

• Thanks for your attention