The BeiDou Navigation Satellite System (BDS) has completed third phase construction and currently provides global services, with a mixed constellation of BDS-2 BDS-3. newly launched BDS-3 satellites are equipped rubidium passive hydrogen maser (PHM) atomic clocks. performance clocks is one the cores satellite navigation system, which will affect positioning, timing (PNT). In this paper, we syst...

Abstract Israel and the Boycott, Divestment, Sanctions movement (BDS) have been in conflict within one another for nearly two decades. In this article we compare trajectories of Palestinian-led BDS mobilization Israeli-led counter-mobilization by deploying theoretical perspectives, a rationalist, strategic learning model political competition model. We find that difference balance power on each...

Abstract Ambiguity Resolution in Precise Point Positioning (PPP-AR) is important to achieving high-precision positioning wide areas. The International GNSS (Global Navigation Satellite System) Service (IGS) and some other academic organizations have begun provide phase bias products enable PPP-AR, such as the integer-clock like by Centre National d’Etudes Spatials (CNES), Wuhan University (WUM)...

A parallel implementation of the preconditioned conjugate residual (PCR) method is described. The method is used to solve the discretized generalised Stokes problem derived from the simulation of complex 2D axisymetrical hot metal forming process. We numerically show that the use of a simple diagonal block (BDS) preconditioner results in a high level of parallelism. Nevertheless in 2D, the iter...

We report results from the first deep millimeter continuum survey targeting Brown Dwarfs (BDs). The survey led to the first detection of cold dust in the disks around two young BDs (CFHT-BD-Tau 4 and IC 348 613), with deep JCMT and IRAM observations reaching flux levels of a few mJy. The dust masses are estimated to be a few Earth masses assuming the same dust opacities as usually applied to T ...

This paper examines the severity of the electron cloud effects in the Low Emittance Transport (LET) of linear colliders including the Bunch-Compressor System (BCS) and Beam Delivery System (BDS). We examine the electron cloud effects in the normal-conducting GLC/NLC or X-Band, and the super-conducting US-Cold and TESLA linear collider designs through the use of specially developed computer simu...

This paper applies six recently developed nonparametric tests of serial independence to monthly US stock returns. Findings of previous studies based on the BDS test are supported since most of the new tests also reject the random walk hypothesis. Furthermore, power properties of the new tests are compared with those of the BDS test. The latter has much power against ARCH and GARCH alternatives ...

The nature and electrophysiological properties of Ca(2+)-independent depolarization-activated potassium currents were investigated in vestibular primary neurons acutely isolated from postnatal mice using the whole cell configuration of the patch-clamp technique. Three types of currents were identified. The first current, sensitive to TEA (I(TEA)) and insensitive to 4-aminopyridine (4-AP), activ...

As pre-launch antenna calibrations are not available for GPS and GLONASS satellites, the high correlation between terrestrial scale phase center offset (PCO) prevents a reliable estimation of with GNSS (Global Navigation Satellite System) technology. Fortunately, ground calibrated PCO values Galileo, BeiDou navigation satellite system (BDS), QZSS have been released, making possible. In third re...