Abstract: A module for processing certifying instances of digital data comprises a public key of the user and of certifying systems, wherein each of the certifying instances is associated with a storage address, with a user terminal, and with a non-repudiable ledger comprising an ordered list of elements. Each of the elements comprises: an attestation generated by one of the certifying systems, an attestation comprising a type of attestation, a document hash, a time stamp by the certifying system of the time at which the attestation was generated; an electronic signature of the attestation; a time stamp by the processing module of the time at which the element was added to the ordered list; and possibly a pointer to the document.

Abstract: A method for spectral estimation of the clutter of a haline liquid medium received by an oceanographic radar, such as a lake, a river, a sea or an ocean, from an array of antennas including at least three antennas. The method includes forming at least two sub-arrays of antennas from the array of antennas, each of the sub-arrays including at least one antenna less than the array of antennas, calculating a beam in one direction for each sub-array of antennas, locating in azimuth all the sources included in the beam from data of the beam coming from each of the sub-arrays, estimating the energy of each of the located sources, selecting a source, referred to as preferred source, among a plurality of sources according to a predetermined criterion when the beam includes a plurality of sources.

Abstract: The invention provides a novel, non-destructive and dynamic process for determining the cell cycle position of living cells. The invention also provides DNA constructs, and cell lines containing such constructs, that exhibit activation and deactivation of a detectable reporter molecule in a cell cycle specific manner. The invention thus allows greater precision in determining cell cycle phase status than existing techniques and further provides a method for continuous monitoring of cell cycle progression in individual cells.