Abstract When GNSS measurement errors such as ionospheric delays remain large, full ambiguity resolution (FAR) takes an unacceptably long time to fix ambiguities integers. Partial (PAR), under this circumstance, is a possible solution obtain precise positioning before FAR achieved. PAR fixes subset of instead all improve either the rate, success rate or accuracy according different criteria. Th...

Large tabular icebergs represent a disruptive influence on a stable water column when drifting in the open ocean. This is a study of one iceberg, C18A, encountered in the Powell Basin in the Weddell Sea in March 2009, formed from iceberg C18 (7637 km) originating from the Ross Ice Shelf in May 2002. C18A was lunate in shape with longest dimensions of 31 km37 km3184 m. The meltwater field from C...

We present a quantitative model for the infrared emission from dust in the di†use interstellar medium. The model consists of a mixture of amorphous silicate grains and carbonaceous grains, each with a wide size distribution ranging from molecules containing tens of atoms to large grains km in diameter. Z1 We assume that the carbonaceous grains have properties like polycyclic aromatic hydrocarbo...

BACKGROUND Previous studies on childhood cancer and nuclear power plants (NPPs) produced conflicting results. We used a cohort approach to examine whether residence near NPPs was associated with leukaemia or any childhood cancer in Switzerland. METHODS We computed person-years at risk for children aged 0-15 years born in Switzerland from 1985 to 2009, based on the Swiss censuses 1990 and 2000...

This article discusses the geochemical and petrological evolution of São José do Campestre granite complex (SJCgr), last Neoarchean plutonic event so far described in massif NE Brazil. We report field, petrographic, zircon U-Pb dating, whole rock mineral chemistry for representative SJCgr samples. Laser ablation data indicate that emplacement took place at 2664 ± 13 Ma. The rocks comprising hav...

How are various claimed Knowledge Management (KM) benefits related to corporate goals, business processes, and to IT applications? Most discussions of KM benefits and, for that matter, of benefits of other alternatives to KM, are not tightly coupled to corporate goals and business processes [1]. In the KM literature the discussion of benefits thus far has not approached a systematic analysis of...

The Long-tailed Skua, a small (<300 g) Arctic-breeding predator and seabird, is a functionally very important component of the Arctic vertebrate communities in summer, but little is known about its migration and winter distribution. We used light-level geolocators to track the annual movements of eight adult birds breeding in north-east Greenland (n = 3) and Svalbard (n = 5). All birds wintered...