Abstract: A digital manifold gauge having a gauge assembly with a display, one or more selectors, and a circuit board wherein the gauge assembly is rotatably disposed within a gauge housing and adapted to rotate to provide a plurality of viewing positions for the user. The circuit board is in electrical communication with a sensor port and the sensor port is adapted to receive a sensor transducer, such as a pressure transducer. The gauge includes internal software and logic for data processing and manipulation. The gauge includes a software algorithm adapted to convert pressure data transmitted to the circuit board from the pressure transducer into temperature data. The temperature and pressure data can be displayed on the display in real time and the gauge can also provide graphing and charting of the pressure-temperature relationship. The gauge is compatible with a variety of refrigerants and other fluids flowing through HVAC systems.

Abstract: A method and apparatus for detecting and engaging participants in an online course that are not likely to attend the online course, is presented herein. Participants in an online course are responsible for attending the course by downloading instructional material and completing assignments through an online forum. Attending the online course causes interaction data and/or performance data to be generated and stored for each participant. The interaction and performance data for a particular participant may be analyzed to determine whether the particular participant is likely to not attend the online course during a future period. If the particular participant is not likely to attend the online course during the future period, an alert is a counselor to intervene and engage the participant. A counselor may follow up with the particular participant to make sure the participant is on track to attend and complete the online course.