Results 41 to 50 of about 135 (115)

Does intrinsic motivation or extrinsic pressure matter more? An exploratory study of small businesses going green and innovation

Business Strategy and the Environment, Volume 33, Issue 5, Page 3855-3886, July 2024.
Abstract Small firms may go green because of intrinsic motivation (to realise their green values) or extrinsic pressure (to satisfy the requirements of stakeholders). While the impacts of these two motivations on firms' green behaviours have been discussed in the literature, their influences on economic behaviours such as innovation remain unclear ...
Bach Nguyen, Nhung Vu
wiley   +1 more source

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

A Continuous B2b-PPP Model Considering Interruptions in BDS-3 B2b Orbits and Clock Corrections as Well as Signal-in-Space Range Error Residuals

Remote Sensing
In 2020, BDS-3 began broadcasting high-precision positioning correction products through B2b signals, effectively addressing the limitations of ground-based augmentation.
Rui Shang, Zhenhao Xu, Chengfa Gao, Xiaolin Meng, Wang Gao, Qi Liu   +5 more
doaj   +1 more source

BDS-3 PPP-B2b signal service range and its application in precipitable water vapor retrieval application research

, 2023
The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
Zhao, P., Xu, Y., Li, L., Wang, R.
openaire   +2 more sources

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, Rui Tu, Qiushi Chen, Qi Li, Junmei Chen, Pengfei Zhang, Xiaochun Lu   +6 more
wiley   +1 more source

Analysis and Assessment of BDS‐3 Five Single‐Frequency Civilian Signals Single Point Positioning Considering Time Group Delay and Intersignal Correction

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 Sensing
The 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, Jinming Yang, Xiaolong Guan, Jianfeng Wu, Huabing Wu   +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, Lei Wang, Ruizhi Chen, Jiansheng Li, Mingjian Chen, Linyang Li, Wenju Fu   +6 more
openaire   +1 more source

Integrated real-time precise point positioning system with B2b/B2a/B1C services

Satellite Navigation
Real-Time Precise Point Positioning (RTPPP) technology is one of the most important means of positioning and navigation, whereas this type of service requires Internet access.
Zhetao Zhang, Hao Wang, Yuanxi Yang
doaj   +1 more source

Temporal Characteristics Based Outlier Detection and Prediction Methods for PPP-B2b Orbit and Clock Corrections

Remote Sensing
The BeiDou Global Navigation Satellite System (BDS-3) provides real-time precise point positioning (PPP) service via B2b signals, offering real-time decimeter-level positioning for users in China and surrounding areas.
Zhenhao Xu, Rui Shang, Chengfa Gao, Wang Gao, Qi Liu, Fengyang Long, Dawei Xu   +6 more
doaj   +1 more source