Results 51 to 60 of about 2,803 (181)
, 2023 The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
Zhao, P., Xu, Y., Li, L., Wang, R.
openaire +2 more sources
Digital divides among microenterprises: Evidence from sub‐Saharan Africa
Journal of International Development, Volume 36, Issue 2, Page 1350-1380, March 2024.Abstract This paper investigates digital inequalities in usage within African informal sectors. In particular, we examine whether the uneven digital diffusion is embedded in pre‐existing socio‐economic inequalities. After identifying three segments of informal firms, we rely on multivariate and decomposition analyses to identify predictors of usage of ...
Damien Girollet
wiley +1 more source
Value co‐creation between foreign firms and indigenous small‐ and medium‐sized enterprises (SMEs) in Kazakhstan's oil and gas industry: the role of information technology spillovers [PDF]
, 2019 Study related to the extractive sector still plays a limited role in the mainstream international business (IB) and management literature, with even less focus on ongoing liberalisation and digitalisation in the industry.
Heim, Irina +3 more
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BDSet: A First-ever BDS Satellite-based PPP Augmentation Dataset Since 2023
Scientific DataThe BDS precise point positioning (PPP) service broadcasts state space representation (SSR) corrections via PPP-B2b augmentation signals. To maximize research potentials of the service, this study develops a first-ever BDS PPP-B2b augmentation dataset ...
Chenhao Ouyang +5 more
doaj +1 more source
Remote SensingIn 2020, BDS-3 began broadcasting high-precision positioning correction products through B2b signals, effectively addressing the limitations of ground-based augmentation.
Rui Shang +5 more
doaj +1 more source
Undifferenced precise time transfer with information‐constraints
IET Radar, Sonar &Navigation, Volume 18, Issue 3, Page 410-422, March 2024.The undifferenced precise time transfer method based on information constraints could effectively be used to smooth the clock difference sequence of the receiver and the clock difference sequence of the time transfer link. This method can also be used to reflect the performance of atomic clocks at GPS stations and is better suited for the precise time ...
Mingyue Liu +6 more
wiley +1 more source
International Journal of Aerospace Engineering, Volume 2024, Issue 1, 2024.The BeiDou Global Navigation Satellite System (BDS‐3) has been providing global positioning, navigation, and timing (PNT) services for over 3 years. Single‐frequency single point positioning (SPP) receivers have significant advantages such as low hardware cost and easy implementation, making them widely used in engineering practice.
Xingli Sun, Dakun Sun
wiley +1 more source
Differences in Time Comparison and Positioning of BDS-3 PPP-B2b Signal Broadcast Through GEO
Remote SensingThe BeiDou-3 Navigation Satellite System (BDS-3) precise point positioning (PPP) service through the B2b signal (PPP-B2b) leverages precise correction data disseminated by satellites to eliminate or mitigate key error sources, including satellite orbit ...
Hongjiao Ma +4 more
doaj +1 more source
Precise LEO orbit determination using regional PPP-B2b augmentation services
Abstract The PPP-B2b service broadcasted by BDS-3 GEO satellites can provide centimeter to decimeter-level positioning accuracy in China and surrounding area. As a free satellite based-augmentation system, BDS PPP-B2b service also potentially benefits the low earth orbit (LEO) space users to improve the orbit determination accuracy.
Haitao Zhou +6 more
openaire +1 more source
Institutional Underpinnings of Trustworthiness in Infrastructure Contracts; the Trust Case [PDF]
, 2007 This paper discusses trust and trust perceptions in infrastructure contracts. We focus on perceptions of the trustworthiness of the government purchasers of infrastructure services by the supplying companies and by the governments themselves.
Dassiou, X., Stern, J.
core