Results 91 to 100 of about 91,121 (140)

An Investigation of Precise Orbit and Clock Products for BDS-3 from Different Analysis Centers. [PDF]

Sensors (Basel), 2021
Shen P, Cheng F, Lu X, Xiao X, Ge Y.
europepmc   +1 more source

PPP und Mittelstand. Untersuchung von 30 ausgewählten PPP-Hochbauprojekten in Deutschland.

, 2008
PPP-Projekte der "zweiten Generation", auch als "PPP im engeren Sinn" oder "echte PPP" bezeichnet, die im Idealfall mindestens vier Lebenszyklusphasen und dabei wesentliehe Teile des Betriebs umfassen, sind inzwischen in Deutschland in größerer Zahl in ...

core   +1 more source

Panel Data Tests of PPP. A Critical Overview [PDF]

This paper reviews panel unit root and cointegration tests in the context of PPP. It highlights various drawbacks of existing methods. First, unit root tests suffer from severe size distortions in the presence of negative moving average errors.
Cerrato, Mario, Caporale, Guglielmo Maria   +1 more
core  

A study on the optimal PPP model for transport: the case of road and rail in South Korea

, 2013
In recent decades the Public Private Partnership (PPP) has been widely regarded as an innovative way to construct transport infrastructures and to improve the quality of service.
Gil, Byungwoo
core   +1 more source

Analysis and Forecasting of Clock Product Deviation for BDS-3 PPP-B2b Based on the Normalized Time-Frequency Transform. [PDF]

Sensors (Basel)
Wu M, Liu J, Liang Y, Yang Y, Luo Q, Zhan H.   +5 more
europepmc   +1 more source

Struggles over waste: Preparing for re-use in the Danish waste sector. [PDF]

Waste Manag Res, 2023
Moalem RM, Remmen A, Hirsbak S, Kerndrup S.   +3 more
europepmc   +1 more source

Single-base station positioning for photovoltaic power plant inspection UAVs based on PPP-B2b signal. [PDF]

Sci Rep
Zhou L, Xie W, Hu L, Zheng S.
europepmc   +1 more source

Does PPP hold for Big Mac price or consumer price index? Evidence from panel cointegration [PDF]

This paper examines the validity of purchasing power parity (PPP) using CPI and Big Mac prices. The benchmark model, i.e., the OLS method, which does not take nonstationarity into account, rejects the hypothesis of PPP regardless of prices used.
Chung-Hua Shen, Chien-Fu Chen, Chien-an Andy Wang   +2 more
core  

Analyzing the Satellite-Induced Code Bias Variation Characteristics for the BDS-3 Via a 40 m Dish Antenna. [PDF]

Sensors (Basel), 2020
Hong J, Tu R, Zhang R, Fan L, Zhang P, Han J, Lu X.   +6 more
europepmc   +1 more source

Remote Performance Evaluation of High-Precision Timekeeping Systems Based on BDS Real-Time PPP. [PDF]

Sensors (Basel)
Yang X, Zhang X, Wu J, Guo J.
europepmc   +1 more source