JPL’s Atmospheric Infrared Sounder (AIRS) instrument is based on a cryogenically cooled infrared spectrometer that uses a pair of pulse tube cryocoolers operating at 55 K to cool the HgCdTe focal plane to 58 K; the instrument also includes cryoradiators at 150 K and 190 K to cool the overall optical bench to 150 K. The cryocooler system design is a key part of the instrument development and foc...

The Spaceborne Atmospheric Infrared Sounder for Geosynchronous Earth Orbit (SIRAS-G) represents a new approach to infrared atmospheric sounding of the Earth from geosynchronous orbit. SIRAS-G, one of nine proposals selected for development under NASA’s 2002 Instrument Incubator Program, is an instrument development effort for an instrument of less mass and power than heritage sounding instrumen...

The potential for informatics solutions to address inpatient safety issues is significant; however, several challenges are associated with the development of patient safety related informatics applications. These challenges include: 1) the identification and/or development of valid and reliable instruments; 2) adequate representation of key safety concepts, constructs, and associated concepts i...

BACKGROUND International interest in clinical practice guidelines has never been greater but many published guidelines do not meet the basic quality requirements. There have been renewed calls for validated criteria to assess the quality of guidelines. OBJECTIVE To develop and validate an international instrument for assessing the quality of the process and reporting of clinical practice guid...

Background: International interest in clinical practice guidelines has never been greater but many published guidelines do not meet the basic quality requirements. There have been renewed calls for validated criteria to assess the quality of guidelines. Objective: To develop and validate an international instrument for assessing the quality of the process and reporting of clinical practice guid...

Over recent years, many scholars have studied the conceptual modeling of information systems based on a model of representation formulated by Wand and Weber. This model offers a set of premises about representational deficiencies and their implications for development and use of conceptual modeling in IS practice. Yet, only few examples of empirical research exist. One of the related problems i...

Background: International interest in clinical practice guidelines has never been greater but many published guidelines do not meet the basic quality requirements. There have been renewed calls for validated criteria to assess the quality of guidelines. Objective: To develop and validate an international instrument for assessing the quality of the process and reporting of clinical practice guid...

Virtual instrumentation is defined as the combination of measurement and control hardware and application software with industry-standard computer technology to create user-defined instrumentation systems. Since the birth of virtual instrument (VI), it enters rapidly into the industrial production field, and Research and Development (RD) field. It can improve production quality, shorten develop...