摘要:
A method of synchronizing the operation of a two-way QKD system by sending a sync signal (SC) in only one direction, namely from one QKD station (ALICE) to the other QKD station (BOB). The one-way transmission greatly reduces the amount of light scattering as compared to two-way sync signal transmission. The method includes phase-locking the sync signal at BOB and dithering the timing of the quantum signals so as to operate the QKD system in three different operating states. The number of detected quantum signals is counted for each state for a given number of detector gating signals. The QKD system is then operated in the state associated with the greatest number of detected quantum signals. This method is rapidly repeated during the operation of the QKD system to compensate for timing errors to maintain the system at or near its optimum operating state. The method allows for only having to adjust the timing of a single timed element—namely, the quantum laser—to compensate for timing variations, rather than having to adjust the timing of all or some of the timed elements in the QKD system.
摘要:
Certain novel N-acylated spiropiperidine derivatives are agonists of the human melanocortin receptor(s) and, in particular, are selective agonists of the human melanocortin-4 receptor (MC-4R). They are therefore useful for the treatment, control, or prevention of diseases and disorders responsive to the activation of MC-4R, such as obesity, diabetes, sexual dysfunction, including erectile dysfunction and female sexual dysfunction.
摘要:
A grounding connector includes a base with a first crimping structure extending from the base for crimping to the cable and securing the cable relative to the base along a cable axis. A first contact member can extend from the base laterally adjacent to the first crimping structure. The first contact member can have a narrowing first cable slot for receiving the cable to engage and form electrical contact with the cable when the first crimping structure is crimped to the cable.
摘要:
A method and apparatus are provided for maintaining a temperature between a first value and a second value. The method and apparatus utilize a heat transfer device capable of cycling through a series of cycles, the device being capable of changing the temperature from the second value to the first value when operational. During each cycle the device transfers heat for a first period of time when the temperature reaches the second volume until the first value is reached and thereafter the device stops transferring heat. The first period of time is compared to a desired cycle-on period of time during each cycle and the second temperature value then is adjusted for a subsequent cycle of the device so the first period of time when the device transfers heat approaches the desired cycle-on period of time. There may also be provided temperature controls for a liquid heater having a jacket containing the liquid. The jacket has an inner heated wall and an outer wall spaced apart from the inner wall. The controls include a temperature sensor capable of fitting to the jacket so that the sensor contacts the inner wall and the liquid. A control module monitors temperature sensed by the temperature sensor. The control module causes the heater to stop heating when the temperature is heated by the heater to a first value and causes the heater to heat when the liquid cools to a second value lower than the first value. The control module senses overheating when temperature sensed by the sensor increases to a third value, higher than the first value, when the heater is not heating, and then causes the heater to shut down.
摘要:
A dual protocol input device for use with a host system is provided. In one embodiment, the input device comprises a chip with a number of semiconductor devices integrally formed thereon, including: an optical navigation sensor (ONS) to sense movement of the ONS relative to a surface; a wired protocol block to communicate data from the ONS to the host system by a wired communication protocol; a wireless protocol block to communicate data from the ONS to the host system by a wireless communication protocol; and a micro-controller coupled to the ONS, the wired protocol block and the wireless protocol block, to switch the input device between the wireless communication protocol and the wired communication protocol.
摘要:
A method of autocalibrating the timing of the laser in a quantum key distribution (QKD) system is disclosed. The laser generates photon signals in response to a laser gating signals from a controller. The method includes first performing a laser gate scan to establish the optimum laser gating signal arrival time corresponding to an optimum bit-error rate when exchanging photon signals between encoding stations of the QKD system. Once the optimum laser gating signal arrival time is determined, the laser gate scan is terminated and laser gate dithering is initiated. Laser gate dithering involves varying the arrival time of the laser gating signal around the optimum value of the arrival time. Laser gate dithering provides minor adjustments to the laser gating signal arrival time to ensure that the system operates at or near the optimum bit-error rate.
摘要:
The instant invention provides for compounds that inhibit the four known mammalian JAK kinases (JAK1, JAK2, JAK3 and TYK2) and PDK1. The invention also provides for compositions comprising such inhibitory compounds and methods of inhibiting the activity of JAK1, JAK2, JAK3 TYK2 and PDK1 by administering the compound to a patient in need of treatment for myeloproliferative disorders or cancer.
摘要:
Systems and methods for verifying error-free transmission of the synchronization (“sync”) channel of a QKD system are disclosed. The method includes sending a first pseudo-random bit stream (PRBS) over the sync channel from Alice to Bob, and verifying at Bob the accurate transmission of the first PRBS. The method also includes sending a second pseudo-random bit stream (PRBS) over the sync channel from Bob to Alice, and verifying at Alice the accurate transmission of the first PRBS. If the transmissions of a select number of bits in the first and second PRBSs are error-free, then the sync channel is verified and the QKD system can commence operation.
摘要:
An overhead storage compartment (10, 100, 200) is disclosed in which the storage compartment (10, 100, 200) is moveable into a collapsed state so as to lie substantially adjacent to a roof panel (2) of a motor vehicle (5) and not intrude significantly into an interior space of the motor vehicle (5) and is further deployable from the collapsed state into an in-use or deployed state in which it defines a cavity that can be used to transport articles in the vehicle (5).
摘要:
A method (300) of performing photon detector autocalibration in quantum key distribution (QKD) system (200) is disclosed. The method (300) includes a first act (302) of performing a detector gate scan to establish the optimum arrival time of a detector gate pulse (S3) that corresponds with a maximum number of photon counts (NMAX) from a single-photon detector (216) in the QKD system (200). Once the optimal detector gate pulse arrival time is determined, then in an act (306), the detector gate scan is terminated and in an act (308) a detector gate dither process is initiated. The detector gate dither act (308) involves varying the arrival time (T) of the detector gate pulse (S3) around the optimal value of the arrival time established during the detector gate scan process. The detector gate dither provides minor adjustments to the arrival time to ensure that the detector (216) produces maximum number of photon counts (NMAX).