Abstract: The present invention provides compounds of the structural Formula (I), and pharmaceutically acceptable salts thereof, wherein, are as defined herein, pharmaceutical compositions comprising one or more such compounds (alone and in combination with one or more other therapeutically active agents), and methods for their preparation and use, alone and in combination with other therapeutic agents, as antagonists of A2a and/or A2b receptors, and in the treatment of a variety of diseases, conditions, or disorders that are mediated, at least in part, by the adenosine A2a receptor and/or the adenosine A2b receptor.

Abstract: A mounting assembly is configured for mounting electronics in a ceiling or wall without requiring access to interior portions of the ceiling or wall. The mounting assembly comprises a collar, at least two arms and at least two threaded screws. The collar fits around and attaches to the electronics housing. The at least two arms are each independently compressed to engage the ceiling and are coupled to the collar to support the collar in the ceiling.

Abstract: A mounting assembly is configured for mounting electronics in a ceiling or wall without requiring access to interior portions of the ceiling or wall. The mounting assembly comprises a collar, at least two arms and at least two threaded screws. The collar fits around and attaches to the electronics housing. The at least two arms are each independently compressed to engage the ceiling and are coupled to the collar to support the collar in the ceiling.

Abstract: The apparatus and method herein provide a means for actively monitoring a communications node for datapath disruptions caused within the node. It was developed to address linecard failures that were detected in the field and for which traditional error detection mechanisms such as CRC and OAM CC checks are not feasible. According to one implementation, statistics are collected over a preset time interval. If any egress cell counts are zero over a full interval, then the ingress interface for that datapath is determined, e.g. using the node's cross-datapath information, and the corresponding linecard of that ingress interface is contacted to determine the ingress cell count. If the ingress cell count is non-zero then the datapath is alarmed since the complete lack of cells transmitted at the egress indicates a datapath disruption.

Abstract: An apparatus (21) is provided for recovering a reference clock generated by a master clock (22) in a sender (20). The sender (20) sends timing packets over a network (3). The apparatus comprises a controllable slave clock (27) and a control circuit (25, 26, 28) which determines the slave clock error and controls the slave clock (27) so as to reduce the error. The error is determined as a function of (m×N)−Ca(n), where 1 C a ⁡ ( n ) = ( ∑ i = 0 q - 1 ⁢   ⁢ C ⁡ ( n - i ) ) / q .

Abstract: A data buffer is disclosed which organizes data packets received from a data link. Each data packet has an associated index number indicating both the order in which the data packet was sent and the order in which that data packet is to be read out from the buffer. The data buffer is made up of plural memory areas, each area being capable of storing a single data packet at a time. Each received data packet is stored in one of the memory areas in accordance with the index number associated with the data packet. The data buffer may be used in conjunction with a data transmitter and a data processor that processes the data packets in real time.

Abstract: Method and apparatus for measuring airflow in a duct utilizing the technique of vortex shedding include inducing the shedding of vortices at a frequency within the range of sound, sensing the sounds generated by the shedding of vortices to determine the frequency of vortex shedding, and converting the frequency of vortex shedding into information indicative of airflow measurements.

Abstract: Disclosed herein is a circuit for automatically selecting between an ECG heartbeat signal source and a pressure/pulse signal source depending on which of the two sources is the most periodic between three successive heart beats. A pair of microprocessor internal timers commence a count-up cycle in response to a first detected heart beat from each of the two respective sources, after which count-down cycles are started in response to the next successive detected heart beats. The counting of the timers is then stopped in response to the third successive detected heart beats from the two sources and a comparison is provided to determine which of the two sources is most periodic, and should be used to trigger a heart rate monitor.

Abstract: Disclosed herein is a pacer signal reject circuit wherein an entire ECG waveform signal is applied to one input of an operational amplifier, while only the initial portion of the pacer signal including the main pulse and a portion of the tail, is applied to the second input of such operational amplifier, to cause cancellation of that initial portion from the ECG signal. Also, a synthesized version of the remainder of such pacer tail is generated and applied to the second input. Thus, by isolating the ECG signal from the second input except for a timed period of the pacer signal, and by applying the synthesized tail signal to such second input, the entire pacer signal may be cancelled.