The official launch of the Chinese BeiDou Navigation Satellite System with global coverage (BDS-3) presents significant opportunities for various applications, including precision agriculture and autonomous driving, among others. With its spatial hybrid space constellation comprising geosynchronous Earth orbit (GEO), inclined (IGSO), medium (MEO) satellites, BDS can significantly contribute to ...

Abstract It is foreseeable that the BeiDou navigation satellite system with global coverage (BDS-3) and (regional) (BDS-2) will coexist in next decade. Care should be taken to minimize adverse impact of receiver-related biases, including inter-system biases (ISBs), differential code (DCB), phase (DPB) on positioning, navigation, timing (PNT) provided by systems (GNSS). Therefore, it important a...

Abstract A new Precise Point Positioning (PPP) service, called the PPP-B2b has been implemented in BeiDou-3 Navigation Satellite System (BDS-3), which brings opportunities for time transfer. However, solution using traditional PPP method with correction still absorbs some unknown errors and needs reconverging when there exist abnormal data. We developed a receiver clock model to improve transfe...

Due to the virtues of low-cost and high positioning accuracy, Single-Frequency Precise Point Positioning (SF-PPP) is becoming a prospective technique. However, SF-PPP not as widely used dual-frequency triple-frequency PPP at present, owing effect ionospheric delay residuals after model rectification. In recent years, with evolution multi-constellation Global Navigation Satellite Systems (multi-...

Abstract This article focuses on the Boycott, Divestment, and Sanctions (BDS) movement's utilization of ‘fluidity,’ conceptualized as ability to adapt campaign tactics multiple arenas political opportunity structures simultaneously. Framing BDS both a social movement transnational advocacy network, it demonstrates fluidity in context three campaigns: at 65th FIFA (Federation Internationale de F...

Global Navigation Satellite System (GNSS)-based positioning is experiencing rapid changes. The existing GPS and the GLONASS systems are being modernized to better serve the current challenging applications under harsh signal conditions. These modernizations include increasing the number of transmission frequencies and changes to the signal components. In addition, the Chinese BeiDou Navigation ...

GABAergic dysfunction is present in the hippocampus in schizophrenia (SZ) and bipolar disorder (BD). The trisynaptic pathway was "deconstructed" into various layers of sectors CA3/2 and CA1 and gene expression profiling performed. Network association analysis was used to uncover genes that may be related to regulation of glutamate decarboxylase 67 (GAD(67)), a marker for this system that has be...

BACKGROUND By international standards, water supplies in Perth, Western Australia, contain high trihalomethane (THM) levels, particularly the brominated forms. Geographic variability in these levels provided an opportunity to examine cross-city spatial relationships between THM exposure and rates of birth defects (BDs). OBJECTIVES Our goal was to examine BD rates by exposure to THMs with a hi...