Abstract:
A method of encapsulating a cable strand formed of a plurality of bundled steel wires is carried out by forcing apart the wires of the strand with wooden wedges, and then filling the resulting gap solid with red lead paste. After this, the wedges are removed to permit the paste to coat and fill all voids between the strand wires. This operation is repeated at a plurality of circumferential positions on the strand. Then, the wedges can be driven in at an adjacent position up the strand. Next, the portion of the strand at which the red lead paste has been so applied is coated with the same paste. Finally, the cable is paint encapsulated by using a bath of red lead paint. This method is favorably carried out to protect the crotch of a suspension bridge main cable strand at a position near the strand shoe thereof.
Abstract:
An individualized time-to-live (TTL) is determined for a reputation score of a computer file. The TTL is determined based on the reputation score and the confidence in the reputation score. The confidence can be determined based on attributes such as the reputation score, an age of the file, and a prevalence of the file. The reputation score is used to determine whether the file is malicious during a validity period defined by the TTL, and discarded thereafter.
Abstract:
A cable containing an optical fiber is used to transmit data between an underwater remotely operated vehicle (ROV) and a support vessel floating on the surface of the water. The ROV pulls the cable through the water and as the ROV dives away from the support vessel, the optical fiber is released from the support vessel. Excess tension in the cable can damage the optical fiber and the tension can be highest close to the ROV. To prevent potential damage to the optical fiber, the ROV can store a portion of the cable and release the cable if the detected tension approaches the maximum working load. When the tension drops to a lower safe level, the release mechanism can stop releasing the cable.
Abstract:
A cable containing an optical fiber is used to transmit data between an underwater remotely operated vehicle (ROV) and a support vessel floating on the surface of the water. The ROV pulls the cable through the water and as the ROV dives away from the support vessel, the optical fiber is released from the support vessel. Excess tension in the cable can damage the optical fiber and the tension can be highest close to the ROV. To prevent potential damage to the optical fiber, the ROV can store a portion of the cable and release the cable if the detected tension approaches the maximum working load. When the tension drops to a lower safe level, the release mechanism can stop releasing the cable.
Abstract:
An optical fiber management system for a remotely operated vehicle (ROV) includes a spool containing a length of optical cable, a motor coupled to the spool, a motor controller, a speed sensor and a feed mechanism. The motor controller can detect the speed of the ROV through water and control the rotational speed of the motor so that the optical cable is removed from the spool at a speed that is equal to or greater than the speed of the ROV. A feed mechanism is used to apply a tension to the optical cable so that it is removed from the spool and emitted from the ROV without becoming tangled.
Abstract:
A downhole actuator apparatus that selectively maintains a pressure differential between two pressure regions in a well. The apparatus includes a body defining first and second chambers. A piston is slidably disposed in the body and is selectively moveable between first and second positions. A barrier is disposed in the body to selectively separate the first and second chambers. A fluid is disposed in the first chamber between the barrier and the piston. A control system that is at least partially disposed within the body is operable to generate an output signal responsive to receipt of a predetermined input signal. The output signal is operable to create a failure of the barrier such that at least a portion of the fluid flows from the first chamber to the second chamber and the piston moves from the first position to the second position.
Abstract:
A method and system to maintain a personal health record, including, obtaining data using a medical imaging device, storing the data in a picture archiving and communication system, determining which of the data stored in the picture archiving and communication system is to be stored in the personal health record, and transmitting the data to be stored in the personal health record to an internet accessible storage device based on the determination.
Abstract:
Techniques are provided that control the generation of test routes to improve the ability of a test system to isolate defects on programmable circuits. A test generator creates test routes that test the horizontal resources. In these test routes, the inputs of each circuit element are only connected to other circuit elements in the same row. Test routes are also generated to test the vertical resources. Each of theses test routes is allowed to make only one transition from between two different rows of circuit elements. The configuration generator includes a post processor that ensures all source drivers in the test routes connect to at least two sinks.
Abstract:
Methods and structures for protecting programmable logic device (“PLD”) programming files are disclosed. In one respect, an embodiment of the present invention includes applying a particular protective setting to a PLD, the setting has a relationship to proper programming of the PLD. A configuration program generates programming data including a non-pre-processed and a pre-processed portion. The pre-processed data reflects the results of processing that is carried out off-device (e.g. by the configuration program on a user computer), but is consistent with the logic of certain on-device processing circuitry. The pre-processing also takes into account information regarding the particular applied setting. The non-pre-processed portion of the programming data is further processed by the certain on-device processing circuitry. The output of the on-device processing circuitry is combined with the pre-processed portion of the programming data in a bit stream for programming the PLD. In another respect, some embodiments utilize a PLD redundancy scheme for implementing programming data protection.
Abstract:
A system and method of damping fluid pressure waves in a subterranean well. In a described embodiment, pressure waves are damped by positioning a dampener in the well during a perforating operation. The dampener may attenuate the pressure waves by absorbing the pressure waves, flowing the pressure waves through viscously damping material, generating complementary pressure waves, changing a material phase, or by a combination of these methods.