Satellite Based Augmentation systems (SBAS) provide to Global Navigation Satellite Systems (GNSS) users with an extra set of information, in order to enhance accuracy and integrity levels of GNSS stand alone positioning. In this context, different test methods to analyze the ionospheric corrections performance are presented. The first set of tests involves two of the ionospheric calculations th...

Landslide identification in alpine and canyon areas is difficult due to the terrain limitations. The main objective of this research was explore method combining small baseline subset interferometric synthetic aperture radar (SBAS-InSAR), multi-temporal optical images field surveys identify potential landslides human-modified area Niulan River southwestern China based on visibility analysis. an...

We study the equilibrium geometry and electronic structure of alloyed and doped arsenene sheets based on the density functional theory calculations. AsN, AsP and SbAs alloys possess indirect band gap and BiAs is direct band gap. Although AsP, SbAs and BiAs alloyed arsenene sheets maintain the semiconducting character of pure arsenene, they have indirect-direct and semiconducting-metallic transi...

The main purpose of this study was to develop an instrument to measure the attitudes of elementary students towards smart board (SB) use in education. A sequential exploratory mixed method was used. So the study started with a qualitative approach to establish the content and face validity of the scale, followed by a quantitative approach to test the construct validity and reliability of the sc...

The current L1 Space Based Augmentation System (SBAS) protection level equations were agreed upon nearly a decade ago. These equations are provided for L1-only users and are based upon covariance propagation of zero-mean gaussian errors. While this description is reasonably accurate for some nominal error sources, it is not always a good model for actual error characteristics. When departures f...

Method Patientswith ICD^10 schizophrenia-spectrumdisorders (first episode) were randomly assigned to integrated treatmentor to standard treatment.Integrated treatmentconsisted of assertive community treatment, psychoeducationalmulti-familygroups and social skills training.Keyrelativeswere assessedwiththe Social Behaviour Assessment Schedule (SBAS, burden of illness), the 5-minspeechsample (EE),...

The need for an embedded design considering both the telemetry and telecommand packet formats and the control system structure in the GCS controller of an UAV is presented in this work. In particular, an extreme situation (loss of INS information in the GCS) is used to evaluate the effect of different parameters relevant for UAV stability, and considering as SBAS data sampled at 1 s as well as ...

Advanced techniques of multi-temporal InSAR (MT-InSAR) represent a valuable tool in ground subsidence studies allowing remote investigation of the behavior of mass movements in long time intervals by using large datasets of SAR images covering the same area and acquired at different epochs. The settlement in Beijing is very serious, producing adverse environmental impacts. Excessive groundwater...

BACKGROUND Availability of a Skilled Birth Attendant (SBA) during childbirth is a key indicator for MDG5 and a strategy for reducing maternal and neonatal mortality in Africa. There is limited information on how SBAs and their functions are defined. The aim of this study was to map the cadres of health providers considered SBAs in Sub Saharan Africa (SSA); to describe which signal functions of ...