Abstract: Methods and systems for measuring and gathering data relating to publication usage by participants in publication readership studies. Some methods and systems employ portable monitors carried by participants of the studies along with publications fitted with various devices, such as piezoelectric transducers, RFID tags and others devices and circuits.

Abstract: Systems, methods and devices for gathering data concerning exposure of predetermined survey participants to media displays are provided. A portable monitor is arranged to receive certain types of terrestrial-based signals, and in some specific cases, satellite-based signals, and to use such signals to generate location data indicative of a location of the portable monitor. The location data and stored media display data is analyzed to evaluate the survey participant's exposure to one or more media displays.

Abstract: Methods and systems for measuring and gathering data relating to publication usage by participants in publication readership studies. Some methods and systems employ portable monitors carried by participants of the studies along with publications fitted with various devices, such as piezoelectric transducers, RFID tags and others devices and circuits.

Abstract: Systems, methods and devices for gathering data concerning exposure of predetermined survey participants to media displays are provided. A portable monitor is arranged to receive certain types of terrestrial-based signals, and in some specific cases, satellite-based signals, and to use such signals to generate location data indicative of a location of the portable monitor. The location data and stored media display data is analyzed to evaluate the survey participant's exposure to one or more media displays.

Abstract: Methods and systems for measuring and gathering data relating to publication usage by participants in publication readership studies. Some methods and systems employ portable monitors carried by participants of the studies along with publications fitted with various devices, such as piezoelectric transducers, RFID tags and others devices and circuits.

Abstract: Systems, methods and devices for gathering data concerning exposure of predetermined survey participants to media displays are provided. A portable monitor is arranged to receive certain types of terrestrial-based signals, and in some specific cases, satellite-based signals, and to use such signals to generate location data indicative of a location of the portable monitor. The location data and stored media display data is analyzed to evaluate the survey participant's exposure to one or more media displays.

Abstract: Systems and methods for gathering research data using multiple monitoring devices are provided. At least a pair of the monitoring devices each read ancillary codes contained within media data and which represents research data. The decoded data read by at least one of the pair is associated with a further set of data offering a correspondence between each of the sets of decoded data. Such correspondence allows a determination that the data decoded by each of the pair of monitoring devices is the same.

Abstract: Methods of gathering data concerning a location of an audience member proximate to a content presentation are provided. A stationary device is proximate to the content presentation. A portable monitor is carried by or with the person of an audience member. Location data is obtained by communicating data from the portable monitor to the stationary device, or from the stationary device to the portable monitor, or by comparing data gathered by both the stationary device and the portable monitor.

Abstract: The present invention concerns methods and systems for gathering data concerning usage of media data provided from a predetermined receiver to a user. First data concerning usage of the media data is gathered by means of a portable monitor carried on the person of the user. Second data concerning usage of media data by the predetermined receiver is gathered by a monitoring system separate from the portable monitor, the second data corresponding to at least a portion of the first data. Audience measurement data is produced based on the first and second data.

Abstract: Methods and systems for tracking movements of participants in a market research study, for example, within a commercial establishment, are provided. The methods and systems employ portable monitors carried on the persons of the participants to gather location data.

Abstract: Methods and systems for tracking movements of participants in a market research study, for example, outside retail establishments, are provided. The methods and systems employ portable monitors carried on the persons of the participants to gather location data.

Abstract: Methods and systems for measuring and gathering data relating to publication usage by participants in publication readership studies. Some methods and systems employ portable monitors carried by participants of the studies along with publications fitted with various devices, such as piezoelectric transducers, RFID tags and others devices and circuits.

Abstract: Systems and methods for monitoring usage of media data at user locations in which the presence or absence of media data in monitored data is determined. Where media data is present, it is separated from the monitored data and used to produce data representing usage of media data.

Abstract: A device for aspirating fluids from a body cavity or hollow organ. The device includes an elongated tube having a proximal opening adapted to be coupled to a suctioning device. The elongated tube also has a portion spaced from the proximal opening to be positioned in the cavity or organ. The portion is convolved about a central axis and has at least one aspirating port facing inwardly of the convolved portion for spacing the at least one aspirating port from the walls of the cavity or organ.

Abstract: Novel strip chart recorders and strip chart recording paper are provided which are cooperable so that the recorder detects the proximity of a terminal edge of the paper, so that the recorder can signal this occurrence to the user enabling him to insert a new supply of strip chart paper in the recorder to avoid the loss of data. The recorder also cooperates with the strip chart paper to determine when paper is absent from the recorder, for example, when it has been exhausted, thereupon to signal this further occurrence to the user and take steps to avoid damage to the recorder which can result through its operation in the absence of paper in the recorder mechanism.

Abstract: For medical examination purposes, an ultrasonic imaging device in which ultrasonic pulses are transmitted into a body of a patient and reflected therefrom. The reflected pulses are converted from ultrasonic to electrical signals by electro-acoustic elements which are then amplified by a time-gain-controlled device and converted for display on a CRT by a scan converter. Amplification of the time-gain-controlled device is controlled by an output voltage produced by a control voltage generator. The generator includes circuitry for automatically delaying the amplitude varying characteristics of the output voltage with time.