Abstract: Method and marine acoustic source array for generating an acoustic wave in a body of water. The marine acoustic source array includes first and second external source sub-arrays, each sub-array including one or more individual source elements; a first actuator device connected to the first external source sub-array; and a second actuator device connected to the second external source sub-array. The first actuator device has a corresponding cable configured to connect to a first lead-in, and the second actuator device has a corresponding cable configured to connect to a second lead-in such that a position of the source array as a whole is controllable along a line substantially perpendicular to a path of the source array.

Abstract: Method and marine acoustic source array for generating an acoustic wave in a body of water. The marine acoustic source array includes first and second external source sub-arrays, each sub-array including one or more individual source elements; a first actuator device connected to the first external source sub-array; and a second actuator device connected to the second external source sub-array. The first actuator device has a corresponding cable configured to connect to a first lead-in, and the second actuator device has a corresponding cable configured to connect to a second lead-in such that a position of the source array as a whole is controllable along a line substantially perpendicular to a path of the source array.

Abstract: A method of evaluating a cryptosystem to determine whether the cryptosystem can withstand a fault analysis attack, the method includes the steps of providing a cryptosystem having an encrypting process to encrypt a plaintext into a ciphertext, introducing a fault into the encrypting process to generate a ciphertext with faults, and comparing the ciphertext with the ciphertext with faults in an attempt to recover a key of the cryptosystem.

Abstract: An automatically actuated hydraulically powered vibrator system for loosening the contents of a semi trailer dump body so that it will break away at its natural dumping angle. The semi trailer dump includes a hydraulic pump which delivers hydraulic fluid under pressure to extend a telescoping hydraulic cylinder to raise the dump body to a dumping position. An adjustable normally closed pressure relief valve is set to open when the pressure in the cylinder reaches a predetermined level corresponding to a dump body angle a few degrees less than the normal dumping angle for the commodity being dumped. When the valve opens, hydraulic fluid is pumped to a hydraulic motor which drives a vibrator which is bolted to the dump body. The vibrator loosens the material being dumped and prepares it to slide out of the body at its natural dumping angle.