Abstract: A system including: a cable including: a core capable of transporting at least one useful electric signal; a sheath surrounding said core; at least one conductive wear detection strand embedded in the sheath and substantially extending along the entire length of the cable; and at least one reference conductive element which is not connected to said at least one wear detection strand and substantially extends along the entire cable length; and a control unit capable of measuring the capacitance or the resistance formed between said at least one strand and the reference conductive element.

Abstract: A device for measuring an electric field in a conducting medium, including: an insulating enclosure; first, second, and third pairs of electrodes, the electrodes of a same pair being arranged on opposite external walls of the enclosure, and the electrodes of the first, second, and third pairs being centered on first, second, and third orthogonal axes; a first conductive coil; a first pair of switches enabling to alternately connect the first coil between the electrodes of the first, of the second, and of the third pair of electrodes; and a single magnetometer.

Abstract: A method is provided for processing a transaction within a server. The method includes: for receiving a processing request, coming from a payment terminal, connected to the server via a communication network; analyzing the processing request delivering at least one digital wallet identifier and a digital wallet user identifier; implementing a payment transaction from the digital wallet identifier and the digital wallet user identifier and at least one parameter specific to a transaction server associated with the digital wallet identifier, and connected to the server by a communication network; receiving, from the transaction server, a finalizing datum representative of the acceptance or rejection of the transaction; and transmitting said finalizing datum to the payment terminal.

Abstract: Method of constructing a geological model of a subterranean formation formed of at least two sedimentary beds. On the basis of sparse measurements of the geometry of boundaries of beds of a subterranean formation carried out on a grid, values of the geometry of each bed at any point of the grid are calculated according to at least the following steps: a succession of coarser and coarser grids is defined, constructed on the basis of the grid of interest; then, proceeding from the coarsest grid to the grid of interest, the geometry of the boundaries of each bed is determined by solving an inverse problem initialized with the result obtained for the previous coarser grid. Next, on the basis of the completed geometry of each boundary of beds on the grid of interest, the geological model of the formation is constructed. Application especially to the exploration and exploitation of oilfields.

Abstract: A magnetometer including a detector configured to measure the amplitude of an output signal at an oscillation frequency to deduce a component of a magnetic field to be measured starting from the value of a resonance gradient, including a main excitation source outputting a measurement signal oscillating at a main oscillation frequency and a secondary excitation source outputting a reference signal with known amplitude oscillating at a secondary oscillation frequency, the detector being configured to measure the output signal amplitude at a harmonic of the secondary oscillation frequency and to deduce said resonance gradient. The invention also applies to a network of magnetometers and a method of measuring a magnetic field without slaving and compensation of fluctuations of the resonance gradient.

Abstract: A method provides a location assertion for a transaction device that has requested, from a server and via a communication network, acceptance of a financial transaction involving the use of banking information. The method includes: receiving a transaction request from the transaction device, including at least one user identifier with which the banking information is associated; a obtaining an IP address associated with the transaction device; determining a current location associated with the IP address; comparing the current location to at least one authorized location on the basis of the identifier of the user; and providing a location assertion to an entity when the comparison step yields a positive result.

Abstract: The laser comprising an optical fiber having two ends of which a first whereby the light is to be received, and a doped section for absorbing at least part of the light received via the first end and emitting light, the method includes: applying a torsion angle to the optical fiber; supplying light having a pump power at the first end of the optical fiber; checking that the Polarization Extinction Ratio of the light output from the first end of the optical fiber remains greater than a predetermined value throughout a predetermined range of the pump power; and, if the Polarization Extinction Ratio remains greater than the predetermined value throughout the predetermined range of the pump power, attaching the optical fiber to a mechanical mount at two attachment points of the optical fiber situated on either side of the doped section, with the torsion angle applied to the optical fiber.

Abstract: A laser includes an optical fiber having two ends of which a first end is configured to receive light therethrough, and a doped section configured to absorb at least part of the light received by the first end and for emitting light. The laser further includes a heat-conducting material which coats at least the doped section of the optical fiber.

Abstract: A method and device are provided for method for identifying a user for access to an article or a service. The method includes: presentation to a terminal, by the user to be identified, of a payment card; execution, by the terminal, of a payment transaction, the amount of which is zero; and when said payment transaction is executed without error, issuing an assertion of identification leading to access to the article or service.

Abstract: A laser includes an optical fiber having two ends of which a first end is configured to receive light therethrough, and a doped section configured to absorb at least part of the light received by the first end and for emitting light. The laser further includes a heat-conducting material which coats at least the doped section of the optical fiber.

Abstract: A method is provided for securing a transaction made by bank card, the transaction involving a remote provision, by a user, of data existing in a bank card in his possession. The method includes: obtaining data existing in the bank card to be used, called textual data; obtaining at least one portion of the textual data in the form of an audio data stream, called a sound sample, resulting from reading the data existing in the bank card to be used; computing a current voice signature from said sound sample; comparing said current voice signature with a reference voice signature pre-recorded and associated with the textual data of the bank card; and when the reference voice signature differs from the current voice signature by a value greater than the first value defined by a predetermined parameter, for rejecting the transaction.

Abstract: A system for performing electronic transaction includes: a payment terminal including a human interface module, a first processor, and an internal bus for connecting these elements; a host terminal connectable to the human interface module through a connection; and a security module. The human interface module includes a keyboard, a display, a card reader for reading and authenticating a bank card or credit card. The host terminal includes a second processor, a memory, and a power supply. A transaction terminal task manager is included in the first security module, the first security module being hosted in the host terminal. The human interface module executes transaction phases under control of the security module, and executes security treatments, totally autonomously from the host terminal. The security treatments include presentation of a PIN code to the bank card or credit card.

Abstract: A method is provided for carrying out a financial transaction. The method is implemented within a terminal of a user wishing to carry out a transaction with a merchant. The method includes: receiving a merchant's identifier; receiving a piece of data representing a transaction amount; generating a transaction by using the user's terminal to the benefit of the merchant; and transmitting the transaction to a transaction management server.

Abstract: This method makes it possible to carry out the auto-calibration of the electromagnetic coils of an apparatus such as an atomic clock, a magnetometer or a gyroscope by injecting successive currents into the coils and measuring the magnetic fields induced in order to calculate the transfer coefficients (field/current) of each of the coils and the real angles that they form with very great precision.

Abstract: A magnetic resonance optical pumping isotropic magnetometer including a laser, a gas filled cell, a HF discharge circuit, RF magnetic field generating coils surrounding the cell, a first frequency regulating mechanism of an RF generator, a second polarization regulating mechanism of the laser beam, and a third regulating mechanism of the direction of the RF magnetic field. The direction of polarization of the laser beam at an inlet of the cell is orthogonally aligned with the magnetic field to be measured by virtue of a liquid crystal polarization rotator. The magnetometer is well-adapted to an integrated arrangement.

Abstract: A system including: a cable including: a core capable of transporting at least one useful electric signal; a sheath surrounding said core; at least one conductive wear detection strand embedded in the sheath and substantially extending along the entire length of the cable; and at least one reference conductive element which is not connected to said at least one wear detection strand and substantially extends along the entire cable length; and a control unit capable of measuring the capacitance or the resistance formed between said at least one strand and the reference conductive element.

Abstract: A method is provided for generating at least one part of a virtual keypad on a touch screen of an electronic terminal. The method includes, prior to displaying the virtual keypad on the touch screen, computing a random graphic representation of the virtual keypad delivering at least one parameter representing a random zone of occupancy of the virtual keypad on the touch screen.

Abstract: The invention is a method of monitoring an underground formation into which a gas is injected or from which a gas is produced, by a stratigraphic inversion of seismic data with anamorphosis of impedances. Pre-injection and post-injection seismic data are acquired. A pre-injection seismic impedance cube IP1 is determined by a stratigraphic inversion of the pre-injection seismic data. An anamorphosis function ? is defined by a function comprising a positive lower limit B1, an upper limit B4, an identity interval defined between limits B2 and B3, with B1<B2<B3<B4. A value for each limit B1, B2, B3 and B4 is associated with each cell of the cube. Post-injection seismic impedances IP2 are determined by a stratigraphic inversion of the post-injection seismic data wherein the anamorphosis function ? is applied to seismic impedances IP2. The gas is located within the zone by identifying the cells where IP2<IP1.

Abstract: The present invention relates to a vector magnetometer for measuring the components of an ambient magnetic field. This vector magnetometer comprises an optically pumped scalar magnetometer (2?), a pair of conductive windings (Ex,Ey) having distinct axes (Ox, Oy) and powered by two generators (Gx, Gy) having distinct frequencies. The RF coil (56) of the scalar magnetometer and the conductive windings (Ex,Ex) are mechanically integral with a swivel support (85) mounted on swivel means. The axis of the RF coil is in the same plane as the axes Ox, Oy. The support is swivelled so that this plane is substantially orthogonal to the ambient magnetic field.

Abstract: The laser comprising an optical fibre having two ends of which a first whereby the light is to be received, and a doped section for absorbing at least part of the light received via the first end and emitting light, the method includes: applying a torsion angle to the optical fibre; supplying light having a pump power at the first end of the optical fibre; checking that the Polarisation Extinction Ratio of the light output from the first end of the optical fibre remains greater than a predetermined value throughout a predetermined range of the pump power; and, if the Polarisation Extinction Ratio remains greater than the predetermined value throughout the predetermined range of the pump power, attaching the optical fibre to a mechanical mount at two attachment points of the optical fibre situated on either side of the doped section, with the torsion angle applied to the optical fibre.