IMPORTANCE Because of shared characteristics, pathological gambling (PG) has been variously conceptualized as an obsessive-compulsive (OC) spectrum disorder or as an addictive disorder. Prior community-based studies have not systematically determined the association between PG and OC features and whether common genetic factors contribute to both conditions. OBJECTIVE To examine the associatio...

Monthly gravity field estimates made by the twin Gravity Recovery and Climate Experiment (GRACE) satellites have a geoid height accuracy of 2 to 3 millimeters at a spatial resolution as small as 400 kilometers. The annual cycle in the geoid variations, up to 10 millimeters in some regions, peaked predominantly in the spring and fall seasons. Geoid variations observed over South America that can...

Since 2015, China has successfully launched five experimental BeiDou global navigation system (BDS-3) satellites for expanding the regional system to global coverage. An initial performance assessment and characterization analysis of the BDS-3 is presented. Twenty days of tracking data have been collected from eleven monitoring stations. The tracking characteristics and measurement quality are ...

One of the most enduring and frustrating mysteries in astrophysics is the nature of the cosmic gamma-ray burst (GRB). GRB’s were first reported in the 1970’s, and since then have been observed from over a dozen different satellites. Two recently launched satellites have revolutionized this field. One, the most sensitive, is known as the Compton Gamma-Ray Observatory (CGRO). This orbiting observ...

Multiple global and regional navigation satellite systems are currently being developed. In addition to the already available GPS and GLONASS constellations, Galileo and BeiDou satellites have been launched, as well as one QZSS satellite and other regional satellites. At the same time GPS and GLONASS are being modernized. Highprecision positioning applications that rely on carrierphase ambiguit...

Abstract. In a recent paper, Edvardsson et al.(2002) propose a new solution for the spin evolution of the Earth and Mars. Their results differ significantly with respect to previous studies, as they found a large contribution on the precession of the planet axis from the tidal effects of Phobos and Deimos. In fact, this probably results from the omission by the authors of the torques exerted on...

Discussion in the Efficacy Working Party July 1997 Transmission to CPMP March 2001 Release For Consultation March 2001 Deadline for comments September 2001 Discussion in the Efficacy Working Party November 2001 Transmission to CPMP April 2002 Rev 1. Adopted by CPMP April 2002 Rev 1. Coming into operation October 2002 Draft Agreed by CNSWP/BSWP/PDCO May 2011 End of consultation (deadline for com...

AIM To assess the accurate establishment of chorionicity, perinatal complications, and outcome of monochorionic twin pregnancies managed in a tertiary referral center in Croatia and compare the findings with data published for other countries. METHODS The retrospective analysis included data on a total of 24 monochorionic twin pregnancies delivered at the Department between January 1998 and M...

An increasing number of satellites are currently being launched into orbit to work in the form clusters or constellations. However, initial position is accompanied by random errors, which will propagate during their running. Therefore, precision directly affects space safety, network accuracy, and operating efficiency. Hence, accurate fast error estimation essential improve satellite control. T...