130,704 research outputs found
Biers (J.C.), Sorjen (D.), eds.-Studies in Cypriote Archaeology.-UCLA, 1981
No full textCaubet Annie. Biers (J.C.), Sorjen (D.), eds.-Studies in Cypriote Archaeology.-UCLA, 1981. In: Les Nouvelles de l'archéologie, n°19, printemps 1985. Archéobotanique. 2ème partie : conséquences et implications. p. 110
Biers (J.C.), Sorjen (D.), eds.-Studies in Cypriote Archaeology.-UCLA, 1981
No full textCaubet Annie. Biers (J.C.), Sorjen (D.), eds.-Studies in Cypriote Archaeology.-UCLA, 1981. In: Les Nouvelles de l'archéologie, n°19, printemps 1985. Archéobotanique. 2ème partie : conséquences et implications. p. 110
In memoriam, Edgar J. Peltenburg
No full textCaubet Annie, Thomas Gordon D. In memoriam, Edgar J. Peltenburg. In: Cahiers du Centre d'Etudes Chypriotes. Volume 46, 2016. Hommage à Antoine Hermary. pp. 9-14
Heteroclinic optimal control solutions for attitude motion planning
No full textAn analytical attitude motion planning method is presented that exploits the heteroclinic connections of an optimal kinematic control problem. This class of motion, of hyperbolic type, supply a special case of analytically defined rotations that can be further optimised to select a suitable reference motion that minimises accumulated torque and the final orientation error amongst these motions. This analytical approach could be used to improve the overall performance of a spacecraft’s attitude dynamics and control system when used alongside current flight tested tracking controllers. The resulting algorithm only involves optimising a small number of parameters of standard functions and is simple to implement
Donald B. Harden, Catalogue of Greek and Roman Glass in the British Museum. Vol. I. Core and Rod-Formed Vessels and Pendants and Mycenaean Cast Objects. D. Barag, Catalogue of Western Asiatic Glass in the British Museum.
No full textCaubet Annie. Donald B. Harden, Catalogue of Greek and Roman Glass in the British Museum. Vol. I. Core and Rod-Formed Vessels and Pendants and Mycenaean Cast Objects. D. Barag, Catalogue of Western Asiatic Glass in the British Museum.. In: Syria. Tome 64 fascicule 3-4, 1987. pp. 365-366
Donald B. Harden, Catalogue of Greek and Roman Glass in the British Museum. Vol. I. Core and Rod-Formed Vessels and Pendants and Mycenaean Cast Objects. D. Barag, Catalogue of Western Asiatic Glass in the British Museum.
No full textCaubet Annie. Donald B. Harden, Catalogue of Greek and Roman Glass in the British Museum. Vol. I. Core and Rod-Formed Vessels and Pendants and Mycenaean Cast Objects. D. Barag, Catalogue of Western Asiatic Glass in the British Museum.. In: Syria. Tome 64 fascicule 3-4, 1987. pp. 365-366
Certificações ambientais e comércio internacional
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Jurídicas. Programa de Pós-Graduação em DireitoO comércio internacional e suas vinculações com a atual crise ecológica são analisadas neste trabalho. O controle ambiental pode ser exercido pelo Estado, ou pode dar-se pela via privada, de forma voluntária e dependente da iniciativa das empresas. Este último segue a matriz neoliberal de que o mercado regula-se por si só, ficando as questões ambientais cada vez mais submetidas às regras comerciais. A ISO apresenta-se como o principal exemplo dentro da padronização das normas ambientais em nível mundial. A questão é obtém cada vez mais destaque em face da polêmica de qual seja o seu verdadeiro objetivo: barreira comercial não tarifária, imposta pelos países desenvolvidos, já que estes são preeminentes no processo de elaboração dos standars; ou contribui para a efetiva defesa do meio ambiente e apresenta-se como uma proteção contra o dumping ecológico praticado pelos países em desenvolvimento. Fora da ótica econômica, que consiste na discussão sobre barreira não tarifária e o dumping ecológico, ainda há que se questionar o fundamento da harmonização das normas ambientais em nível mundial, bem como da sua eficácia com relação ao fim declaradamente proposto que é a sustentabilidade ecológica
Salem Chaker et Dominique Caubet (dir.), La négation en berbère et en arabe maghrébin, Paris, L'Harmattan, 1996, 195 p.
No full textCe volume consacré à la négation dans les langues du Maghreb regroupe pour l'essentiel des contributions d'étudiants de doctorat travaillant sous la direction de D. Caubet ou S. Chaker. Dans le cadre plus général de la "grammaticalisation", D. Caubet et S. Chaker ont abordé dans leur séminaire la question de la morphogénèse et des développements de la négation en berbère et en arabe maghrébin. Les étudiants spécialistes d'arabe maghrébin et de berbère se trouvaient être originaires de régions..
Design of an attitude stabilization electromagnetic module for detumbling uncooperative targets
No full textOne of the challenges of Active Debris Removal is related to the tumbling of the target satellite, when the chaser spacecraft has to approach and capture it. This paper presents the ASEM (Attitude Stabilization Electromagnetic Module) concept for detumbling debris in a low Earth orbit with the intention of mitigating risk during capture operations. This paper presents a preliminary design of a system whose purpose is to stabilize a target’s attitude, using an external module equipped with magnetorquers. The device, initially carried by the chaser spacecraft, is attached to the body of the target satellite. The magnetorquers are then used to detumble the target so that the chaser spacecraft can perform a safe approach prior to capture. A simplified model is used in the initial design phase to optimize the mass of the system and to size the torque rods and power source. Alternative methods for attaching the ASEM to the target from the chaser spacecraft are discussed. In addition a novel magnetic control law suitable for this application is presented. The feasibility of the concept is tested in simulations using a model based on Envisat (assuming that the ASEM is already attached to the target). Results show that a module weighing less than 20 kg can stabilize an 8-ton satellite initially rotating at 1 rpm in 21 days
An efficient sub-optimal motion planning method for attitude manoeuvres
No full textA motion planning technique for efficiently generating smooth spacecraft attitude slew manoeuvres is presented. The attitude trajectory (using quaternions) is shaped by a polynomial, determined by matching prescribed boundary conditions and the manoeuvre time. This method allows constraints such as limits on velocity, acceleration, jerk, and torque to be evaluated via inverse dynamics. Pointing constraints are also considered. A spin-to-spin case is presented whereby an axisazimuth parameterisation is used. The problem of time minimization (within the set of trajectories defined by the given polynomials) is addressed, and a method for analytically estimating the minimum time of a manoeuvre is proposed. The method requires low computational capacity, and a comparison with optimal control solutions shows its relative performance
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