Results 101 to 110 of about 5,886 (223)

A method for predicting short‐time changes in fine particulate matter (PM2.5) mass concentration based on the global navigation satellite system zenith tropospheric delay

Meteorological Applications, 2020
In this study, a method of haze prediction has been developed based on zenith tropospheric delay (ZTD). The relationship between ZTD and fine particulate matter (PM2.5, the main component of haze) during hazy periods in Beijing from 2015 to 2018 was ...
Min Guo, Hanwei Zhang, Pengfei Xia
doaj   +1 more source

One-loop amplitudes for four-point functions with two external massive quarks and two external massless partons up to O(epsilon^2)

, 2006
We present complete analytical ${\mathcal O}(\epsilon^2)$ results on the one-loop amplitudes relevant for the NNLO quark-parton model description of the hadroproduction of heavy quarks as given by the so-called loop-by-loop contributions.
A. Hearn, G. Kramer, J. G. Körner, J. F. Ashmore, M. Rogal, Z. Merebashvili   +5 more
core   +1 more source

ZTD$_{JAVA}$: Mitigating Software Supply Chain Vulnerabilities via Zero-Trust Dependencies

, 2023
13 pages, 3 figures, 8 ...
Amusuo, Paschal C., Robinson, Kyle A., Singla, Tanmay, Peng, Huiyun, Machiry, Aravind, Torres-Arias, Santiago, Simon, Laurent, Davis, James C.   +7 more
openaire   +2 more sources

Assimilation of GPS ZTD in meteorological models by 3D Var

, 2018
The purpose of the data assimilation is to optimally use all the available information, to determine as accurately as possible the state of the atmosphere. We show the assimilation of the GPS-ZTD (Global Positioning System - Zenith Total Delay) by a 3D-Var data assimilation system that can be used in cycling mode with the Regional Atmospheric Modeling ...
A. Mascitelli, S. Federico, E. Avolio, M. Crespi, S. Dietrich   +4 more
  +7 more sources

A New Grid Zenith Tropospheric Delay Model Considering Time-Varying Vertical Adjustment and Diurnal Variation over China

Remote Sensing
Improving the accuracy of zenith tropospheric delay (ZTD) models is an important task. However, the existing ZTD models still have limitations, such as a lack of appropriate vertical adjustment function and being unsuitable for China, which has a complex
Jihong Zhang, Xiaoqing Zuo, Shipeng Guo, Shaofeng Xie, Xu Yang, Yongning Li, Xuefu Yue   +6 more
doaj   +1 more source

Assimilation of GNSS ZTD with HARMONIE

, 2014
Póster presentado en: International Symposium on Data Assimilation 2014 celebrado en Munich, del 24 al 28 de febrero de ...
Sánchez Arriola, Jana, Thorsteinsson, Sigurdur, Lindskog, Magnus, Vedel, Henrik   +3 more
openaire   +1 more source

Direct derivation of anisotropic atomic displacement parameters from molecular dynamics simulations in extended solids with substitutional disorder using a neural network potential

Acta Crystallographica Section A, Volume 81, Issue 4, Page 279-293, July 2025.
Direct derivation of anisotropic atomic displacement parameters is possible using molecular dynamics simulations of supercells at finite temperature.Atomic displacement parameters (ADPs) are crystallographic information describing the statistical distribution of atoms around an atom site.
Yoyo Hinuma
wiley   +1 more source

Adoption and Impacts of Zero-Tillage in the Rice-Wheat Zone of Irrigated Punjab, Pakistan [PDF]

This study documents the adoption and impacts of zero-tillage (ZT) wheat in the ricewheat systems of Pakistan’s Punjab province primarily drawing on a detailed empirical survey of 458 rice-wheat farmers. Our random stratified sample revealed 19% to be ZT
Erenstein, Olaf, Farooq, Umar, Sharif, Muhammad   +2 more
core   +1 more source

Evaluation of the Zenith Tropospheric Delay (ZTD) Derived from VMF3_FC and VMF3_OP Products Based on the CMONOC Data

Atmosphere
Prior tropospheric information, especially zenith tropospheric delay (ZTD), is particularly important in GNSS data processing. The two types of ZTD models, those that require and do not require meteorological parameters, are the most commonly used models,
Haoran Zhang, Liang Chen, Fei Yang, Jing Ma, Junya Zhang, Wen-xin Sun, Shiqi Xu   +6 more
semanticscholar   +1 more source

Research toward the Practical Application of Liquidity Risk Evaluation Methods [PDF]

This paper proposes a practical framework for the quantification of Liquidity-adjusted Value at Risk ("L-VaR") incorporating the market liquidity of financial products. This framework incorporates the mechanism of the market impact caused by the investor'
Hisata, Yoshifumi, Yamai, Yasuhiro
core