Jacques Delince

Jacques Delince
None · None

PhD

About

47
Publications
19,647
Reads
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510
Citations
Citations since 2017
8 Research Items
176 Citations
2017201820192020202120222023010203040
2017201820192020202120222023010203040
2017201820192020202120222023010203040
2017201820192020202120222023010203040
Introduction
Skills and Expertise
Additional affiliations
August 1987 - October 2014
European Commision
Position
  • Head of Department
October 1973 - July 1978
Université Catholique de Louvain - UCLouvain
Position
  • Asssistant Professor

Publications

Publications (47)
Article
Full-text available
Crop area estimates based on counting pixels over classified satellite images are a promising application of remote sensing to agriculture. However, such area estimates are biased, and their variance is a function of the error rates of the classification rule. To redress the bias, estimators (direct and inverse) relying on the so-called confusion m...
Technical Report
Full-text available
Following the 2015 publication of the Handbook on Master Sampling Frames for Agricultural Statistics: Frame Development, Sample Design and Estimation (hereafter, the Handbook), the Global Strategy to improve Agricultural and Rural Statistics (GSARS) initiated a series of field test experiments aiming to answer technical questions raised by the nati...
Technical Report
Full-text available
This Handbook on the Agricultural Integrated Survey (AGRIS) was prepared by a core team of senior agricultural statisticians with extensive knowledge of, and several decades of experience in, surveys and censuses in various regions of the world. The team’s work was coordinated by Mr François Fonteneau, AGRIS Programme Manager in the Global Office o...
Technical Report
Full-text available
The purpose of the Handbook on “Remote Sensing for Agricultural Statistics” is to provide guidelines on the use of Remote Sensing for agricultural statistics. Since the mid 70’s, Remote Sensing has been seen as a promising technique for improving agricultural statistics; various applications have taken place on all continents and today various appr...
Conference Paper
Full-text available
The handbook on " Master Sampling Frame for Agriculture " published in 2015 answered to one of the three priorities of the Global Strategy to improve the Agricultural and Rural Statistics. It has now been completed with field tests aiming at answering questions related to the frame construction, to the sampling strategies, to the estimation methods...
Technical Report
Full-text available
Forecasting crop production (and crop yield in particular) has been a constant concern since the beginning of the history of agriculture. Forecasting techniques have evolved, as has agriculture itself and the specifications of the forecasts needed. Those who use forecast data are always seeking greater accuracy, granularity, comparability, and time...
Book
Full-text available
Forecasting crop production (and crop yield in particular) has been a constant concern since the beginning of the history of agriculture. Forecasting techniques have evolved, as has agriculture itself and the specifications of the forecasts needed. Those who use forecast data are always seeking greater accuracy, granularity, comparability, and time...
Technical Report
Full-text available
Food security remains to be a major societal concern. In the light of the current expectations of population growth, world food production has to be massively increased to sustain the associated food demand rise. While agricultural productivity was rising during recent decades in the US, Europe and also in some developing countries, the correspondi...
Article
Full-text available
The current paper investigates the long-term global impacts on crop productivity under different climate scenarios using the AgMIP approach (Agricultural Model Intercomparison and Improvement Project). The paper provides horizontal model intercomparison from 11 economic models as well as a more detailed analysis of the simulated effects from the Co...
Technical Report
Full-text available
The use of Remote Sensing for agricultural statistics began in the 1970s, with the launch of the Landsat MSS satellite. At that time, NASA (in the United States) as well as other space agencies, such as ISRO (India) launched research programs aiming to use remote sensing for agricultural statistics. Later, many other space centres became active (Br...
Chapter
This chapter provides an overview of trade and finance issues in the global phosphate and fertilizer market. First, we analyze global trade dynamics affecting fertilizers and their raw materials. Secondly, we present factors that influence fertilizer prices. Based on these analyses, we infer that prices for raw materials, energy and transport costs...
Technical Report
Full-text available
This working paper provides a review of the literature on methodologies applied for data collection and processing of cost of production (CoP) in agriculture in developed and developing countries. The report focuses on three main aspects of CoP methodologies: CoP survey design, CoP calculation and CoP international comparisons. For each of these to...
Technical Report
Full-text available
Food security, natural resources and climate change related questions focusing on a longer time horizon (2050+) are gaining importance. To assess the requirements and challenges entailed with the simulation of long-term issues in the agri-food sector the JRC-IPTS carried out the project “Methodological equirements of a modelling tool for simulation...
Book
Full-text available
Food security, natural resources and climate change related questions focusing on a longer time horizon (2050+) are gaining importance. To assess the requirements and challenges entailed with the simulation of long-term issues in the agri-food sector the JRC-IPTS carried out the project “Methodological requirements of a modelling tool for simulatio...
Technical Report
Full-text available
The present report provides an overview of the scale, speed, drivers, key players and main expected consequences in terms of food security of the recent wave of (international) large-scale land transactions (LSLT ́s) which has taken place at world level in the past years. This task is particularly challenging because a universal definition of what...
Technical Report
Full-text available
The concept of iMAP started early 2005 with the idea of building up a platform to host agro-economic modelling tools financed by the European Commission, in particular the EU Research Framework Programmes. Largely with financing from the Agriculture and Rural Development Directorate General (DG AGRI), it has developed into a policy support-oriented...
Conference Paper
Full-text available
Farm-household relations represent a central question as related to data collection / processing to provide information on rural development and agricultural-based households income. This issue implies both theoretical and empirical (modelling) facets. In the framework of the SEAMLESS Integrated Project (EU Framework Programme 6), the Farm System S...
Article
Full-text available
Rainfall estimates derived from satellite imagery and global circulation models are frequently used for vegetation monitoring in many areas of Africa because of the shortage of observed rainfall data and the sparse network of meteorological stations. At the same time, this scarce density of rain gauge stations makes the calibration and validation o...
Chapter
In the European Land Use and Cover Area-Frame Statistical Survey (LUCAS) the population is the European Union (EU), and the sampling frame is a representation of the EU in a Lambert azimuthal equal area projection. Stratified systematic sampling is carried out as an independent systematic sample in each stratum, but doing so reduces the advantages...
Conference Paper
Full-text available
In this paper two different research projects are compared with the UN Global Strategy in terms of their objectives, data needs and possible results. We analyze two economic models: a single-country Computable General Equilibrium (CGE) model and a farm household model. The CGE model is an economy-wide model, based on a Social Accounting Matrix (SAM...
Conference Paper
Full-text available
The AGRIFISH Unit of the Joint Research Centre, European Commission, has now nearly 20 years of experience with crop monitoring in and outside Europe. During this period, a number of research and development activities have been carried out, leading to several operational systems which are all based on spatial information. One of the best known is...
Article
Full-text available
This paper proposes a simple and general theoretical framework for the error assessment of area measurements of planar polygonal surfaces. The general formulation is first developed, both for the case of correlated and for the case of independent measurements, where a compact formulation can be obtained for the latter. These results are then used i...
Conference Paper
Full-text available
The paper will cover the activities in the United States and the European Union with regard to the utilization of remotely sensed data for input to official agricultural statistics and for crop condition and production forecasting, estimation and mapping. Both the U.S. and the EU programs in this topic area are longstanding programs and recent deve...
Conference Paper
Full-text available
Making agricultural information more user-friendly requires the adoption of the same approach about this information than users will have. So the usual breakdown of statistical fields - resulting from the statistical collection techniques - is not always appropriated. To be user-friendlier, statistical data have to be harmonised and linked within a...
Technical Report
Full-text available
This report is a synthesis of the work, the results and an assessment of the achievements of Action 1 of the MARS Project. The report consists of this stand-alone executive summary and five additional sections. The first three enlarge on the main elements of the methodology: ground survey, remote sensing and the combination of these using regressio...
Article
Since the reform of the Common Agricultural Policy (CAP) is based on acreage rather than production, farmers have to declare each individual plot and provide a map to geo‐locate them. Remote Sensing and Geographic Information System (GIS) are at present, used to manage the implementation of area‐aid payments. As a technical support to EAGGF (Europe...
Article
In the MARS Project (Monitoring Agriculture with Remote Sensing) of the E.C. (European Community), area frames based on a squared grid are used for area estimation through ground survey and high resolution satellite images. These satellite images are useful, though expensive, for area estimation; their use for yield estimation is not yet operationa...
Article
Classified high-resolution satellite images are useful to improve the precision of crop area estimates in an area frame survey through the regression estimator. This is the method used for the Regional Inventories of the MARS Project of the IRSA that is briefly described. Some aspects concerning stability are discussed. Regression results seem to b...
Conference Paper
Full-text available
The project concerns the estimate of agricultural statistics based on an area frame. It has been carried out both by the integration of ground surveys and remote sensing data and by area frame sampling of farms. Farm surveys allow the estimate of surface and production statistics along with other structural characteristics of the farms. The results...
Article
Since 1987, the activities of the Agriculture Project in the application of remote sensing to agricultural statistics have evolved and now also concern agricultural statistics in the control of frauds. Most of the four basic actions are already producing results and real time applications have been launched as support to the Commission. This paper...
Article
The life span of samples of the Oregon-R strain of Drosophila melanogaster was observed, every fourth week, during a four-year period. Large variations, most probably non-random, were observed at both 25 and 21 degrees C. The possible causes of these variations have been searched for, yet no definite conclusion can be reached. The implications of t...
Article
It has been suggested that senescence could have evolved by selection of genes with beneficial effects early in life and detrimental ones later in life (pleiotropy theory of the evolution of senescence). To test that theory, the egg production of 322 females of the Oregon strain of Drosophila melanogaster was recorded daily throughout their life. A...
Article
This paper presents the developments of the Agriculture Pilot Project in remote sensing, sustained by the European Communities in the Joint Research Center, Ispra establishment. It concerns mainly the sampling strategies concerned with Regional Crop Inventories, European Rapid Estimates and Yield Forecasting. -Author
Article
A minor modification to Morisita's method permits the definition of a robust density estimator based on nearest neighbor distances by sectors. In a finite population frame, these distances are used to evaluate the probability of selecting the nearest individual to a point chosen at random. In simulations of regular, Poisson, and aggregated patterns...
Thesis
Full-text available
This study relates to static objects of small dimension compared to the domain under study. In this context, the desnsity estimation can be achieved with various strategies: counting objects in fixed area segments, angle counting, distance measurements, line intercept method, grid contacts or domain tessellation. Targetting the density as number of...
Article
Full-text available
RESUME Les fondements de la methode de l ' angle critique , conme estimateur de la surface terriere, reposent sur l 'hypothese d ' une repartition spatiale selon un processus de Poisson. Par simulation, nous avons constate que si l 'on relache cette hypothese, la methode se revele exempte d 'erreur systematique, mais sensible au niveau de la precis...
Article
A global observation capacity is required for agricultural production forecasts and food security alert systems. The European Commissions Joint Research Center (JRC) uses low resolution satellite imagery to map vegetation status. The derived information is employed for qualitative and quantitative analysis within near real-time production forecasts...

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Cited By

Projects

Projects (4)
Project
Publication of a coauthored book (9 authors) covering: - open access to data and software - land cover monitoring - creation of sampling frame - the notion of crop data layers - the crop areas estimation - the yield forecasts - forest monitoring - organizational and budgetary aspects - cost efficiency of remote sensing.
Project
tests in Brazil and Nepal of the notion of Master Sampling Frame by comparison of list and area frames approaches