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2nd International Workshop on Organic Matter Spectroscopy (WOMS'2013))

20 Février 2013

Catégorie : Conférence internationale

INTERNATIONAL WORKSHOP on ORGANIC MATTER SPECTROSCOPY 2013 (WOMS 2013), Organic Matter Characterization Using Spectroscopic Techniques coupled with advanced Signal Processing Techniques.

16-19th July 2013, La Garde City, France

Organized by Université du Sud Toulon Var and Aix Marseille Université.

Aims and Scope

This Workshop seeks to present new trends and recent advancements in the characterization of dissolved organic matter (DOM) in marine and inland waters using spectroscopic techniques coupled with advanced signal and image processing tools. It will be the second international workshop dedicated to DOM spectroscopy. The preceding edition of WOMS took place in Granada (Spain) in 2010.

WOMS 2013 invites new contributions about the characterization of DOM in marine and inland waters using spectroscopic techniques, particularly fluorescence spectroscopy, coupled with advanced signal and image processing tools, among which improved data analysis, detection, clustering, separation, reconstruction, tracking and real-time monitoring.

The purpose of WOMS 2013 is to present new and effective approaches in the area of fluorescence spectroscopy for the analysis of environmental data. It is also to be a meeting place for both the signal processing community and the environmental organic matter community in order to strengthen their dialogue and interaction towards a mutual scientific topic.


Important Dates

  • First Call : January 2013
  • Electronic submission: end of April 2013 (
  • Notification of acceptance: end of May 2013
  • Deadline for registration: May 2013 (

Topics of interest

They include, but are not limited to:

  • Fluorescence measurements
    • Physico-chemical parameters influencing the DOM spectroscopic measurements
    • Inner filtering effect correction methods and their domains of application
    • Measurement standardization and calibration, instrumental corrections, use of standards
    • Laser-induced, time-resolved fluorescence spectroscopy and lifetime of fluorophores
    • In situ fluorescence, sensors, on-line measurements for environmental monitoring
    • New real-time data processing
    • Could it be possible to build an international numeric library?
  • Signal and image processing for fluorescence data
    • Pre- and post-processing (noise reduction, image filtering, smoothing, inner effect correction)
    • Reconstruction of the Fluorescence Emission-Excitation Matrices (EEM) of the separated fluorophores from few observations or with possible missing data
    • Best way to deal with a non-negative and/or sparse constraint
    • Best way to initialize the factorization algorithms
    • Best way to estimate the number of fluorophores in PARAFAC analysis - Detection/decision, estimation and clustering of fluorophores

Recent trends in non-negative tensors factorizations raise significant theoretical challenges to provide sound mathematical grounds to such methods (non-negative rank, possible sparse constraints, regularization, real-time processing, high dimensional problems and computational cost).


WOMS 2013 will take place during 3 days in July 2013 in Toulon, France. Two invited speakers and 5 or 6 talks on recent research domain dealing with DOM spectroscopy will be scheduled each day. A fourth day will be dedicated, on choice, to a round table for elaborating recommendations, to a training period on PARAFAC, or to a IHSS session focused on organic matter characterization.

Training on Candecomp/PARAFAC algorithms

The last day of this Workshop will be dedicated to a 3h training stage for researchers or students who want to learn how to use PARAFAC algorithms. This learning and training will be performed on a user-friendly home made Matlab program using different PARAFAC decomposition algorithms and several correction options (absorbance, controlled dilution or extreme dilution). During the training, a model data-set will be used, but it will be possible to undertake the processing of personal data. At the end of the training session, an executable version of the program will be provided for in-lab use.