Results 41 to 50 of about 61,364 (160)

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

open access: yesInternational 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

PPP Infrastructure development in China: Challenges and future trends

open access: yes, 2013
China is one of the fastest growing economies, which demonstrates a strong investment-led growth model to the world. Chinese central government has a strategic infrastructure plan to support its national economic growth and rapid urbanisation.
Kong, Jiaojiao   +7 more
core  

B2B e -Marketplaces. What´s In It For Me? [PDF]

open access: yes
(WP28/02 Clave pdf) Commerce among firms through the Internet, the so-called B2B commerce, constitutes a newly developed area in which most theses are yet to be demonstrated. The value proposition for firms in B2B commerce suggests the creation of highly
ENRIQUE DANS
core  

Aplicação do modelo UCON abc em sistemas de comércio eletrônico B2B [PDF]

open access: yes, 2005
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduaçõa em Ciência da Computação.Recentemente foi proposto um modelo de controle de acesso, denominado UCONABC, que além de unir alguns dos principais ...
Camy, Alexandre Rosa
core  

Precise LEO orbit determination using regional PPP-B2b augmentation services

open access: yesMeasurement
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   +7 more
openaire   +2 more sources

O uso da tecnologia business to business (B2B) dentro dos conceitos JIT de relacionamento [PDF]

open access: yes, 2002
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia de Produção.Este estudo aborda o uso da Tecnologia Business to Business (B2B) dentro dos conceitos JIT de Relacionamento.
Oliveira, Edmar Bonfim de
core  

The PPP hypothesis revisited: Evidence using a multivariate long-memory model [PDF]

open access: yes, 2013
This paper examines the PPP hypothesis analysing the behaviour of the real exchange rates vis-à-vis the US dollar for four major currencies (namely, the Canadian dollar, the euro, the Japanese yen and the British pound).
Gil-Alana, Luis A.   +5 more
core   +1 more source

Differences in Time Comparison and Positioning of BDS-3 PPP-B2b Signal Broadcast Through GEO

open access: yes
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   +4 more
core   +1 more source

LEO-Enhanced BDS-3 PPP Performance Based on B2b Signal

open access: yes
Since 2020, the BDS-3 has been providing real-time corrections via the B2b signal, enabling users in China and its neighboring regions to achieve kinematic positioning accuracy at the decimeter level.
Fangxin Li   +4 more
core   +1 more source

B2B emarketplace announcements and shareholder wealth [PDF]

open access: yes
In the business-to-business (B2B) sector, new supply-chain models within electronic marketplaces (eMarketplaces) offer firms significantly lower procurement costs, increased operating efficiencies, and expanded market opportunities.
Thomas F. Siems, Andrew H. Chen
core  

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