In this paper a practical method for tropospheric effects on GPS derived coordinates in absolute mode is presented. GPS observations at the permanent GPS stations can be used as source of information for the modeling. The developed model is a time-dependent model and as such differs from usual tropospheric models, which are based on atmospheric parameters, i.e. temperature, pressure and humidit...

BACKGROUND The South African government intends to contract with 'accredited provider groups' for capitated primary care under National Health Insurance (NHI). South African solo general practitioners (GPs) are unhappy with group practice. There is no clarity on the views of GPs in group practice on contracting to the NHI. OBJECTIVES To describe the demographic and practice profile of GPs in ...

in this paper a practical method for tropospheric effects on gps derived coordinates in absolute mode is presented. gps observations at the permanent gps stations can be used as source of information for the modeling. the developed model is a time-dependent model and as such differs from usual tropospheric models, which are based on atmospheric parameters, i.e. temperature, pressure and humidit...

Abstract: The availability of GLONASS would bring significant benefits to geodetic applications of global positioning systems. GPS and GLONASS observations could be combined directly in the data processing; as a result, the geometry of observed satellites could be enhanced by increasing the number of available satellites. Up to now, with the recent revitalization of GLONASS, more high precision...

OBJECTIVE We aim to describe medical services provided by Nordic general practitioners (GPs), and to explore possible differences between the countries. DESIGN AND SETTING We did a comparative analysis of selected data from the Nordic part of the study Quality and Costs of Primary Care in Europe (QUALICOPC). SUBJECTS A total of 875 Nordic GPs (198 Norwegian, 80 Icelandic, 97 Swedish, 212 Da...