Results 61 to 70 of about 223,361 (218)

Assimilation of zenith total delays in the AROME France convective scale model: a recent assessment

Tellus A: Dynamic Meteorology and Oceanography, 2015
The impact of assimilating GPS zenith total delays (ZTD) in the convective scale model AROME is assessed over a 1-month period in summer 2013. The experimental set-up is similar to the current operational usage at Météo-France where the observing system has been expanded in July 2013 in a three-dimensional variational (3D-Var) data assimilation scheme ...
Mahfouf, Jean-Francois, Ahmed, Furqan, Moll, Patrick, Teferle, Felix Norman   +3 more
openaire   +5 more sources

Astrometry of Galactic Star Forming Region Sharpless 269 with VERA : Parallax Measurements and Constraint on Outer Rotation Curve

, 2007
We have performed high-precision astrometry of H2O maser sources in Galactic star forming region Sharpless 269 (S269) with VERA. We have successfully detected a trigonometric parallax of 189+/-8 micro-arcsec, corresponding to the source distance of 5.28 +
Bushimata, Takeshi, Choi, Yoon Kyung, Hirota, Tomoya, Honma, Mareki, Imai, Hiroshi, Iwadate, Kenzaburo, Jike, Takaaki, Kameya, Osamu, Kamohara, Ryuichi, Kan-ya, Yukitoshi, Kawaguchi, Noriyuki, Kijima, Masachika, Kobayashi, Hideyuki, Kuji, Seisuke, Kurayama, Tomoharu, Manabe, Seiji, Miyaji, Takeshi, Nagayama, Takumi, Nakagawa, Akiharu, Oh, Chung Sik, Omodaka, Toshihiro, Oyama, Tomoaki, Sakai, Satoshi, Sasao, Tetsuo, Sato, Katsuhisa, Shibata, Katsunori M., Shintani, Motonobu, Suda, Hiroshi, Tamura, Yoshiaki, Tsushima, Miyuki, Yamashita, Kazuyoshi   +30 more
core   +2 more sources

Limits on the validity of the thin-layer model of the ionosphere for radio interferometric calibration [PDF]

, 2016
For a ground-based radio interferometer observing at low frequencies, the ionosphere causes propagation delays and refraction of cosmic radio waves which result in phase errors in the received signal.
Bray, Justin D., Martin, Poppy L., Scaife, Anna M. M.   +2 more
core   +2 more sources

Harnessing Phase Separation for the Development of High‐Performance Hydrogels

Advanced Science, EarlyView.
ABSTRACT Hydrogels are indispensable for the development of next‐generation bioelectronics, soft robotics, and biomedical devices, where their mechanical properties determine performance and reliability. Among strategies to enhance hydrogel mechanics, phase separation enables controlled heterogeneity resulting in gel networks that are reinforced by ...
Yue Shao, Yiming Ma, Baihao Shao, Molly M. Stevens   +3 more
wiley   +1 more source

A Precise Distance to IRAS 00420+5530 via H2O Maser Parallax with the VLBA

, 2009
We have used the VLBA to measure the annual parallax of the H2O masers in the star-forming region IRAS 00420+5530. This measurement yields a direct distance estimate of 2.17 +/- 0.05 kpc (
Brand, Brand, Brisken, Chatterjee, G. A. Moellenbrock, Hachisuka, Kerr, M. J. Claussen, Ma, Molinari, Molinari, Neckel, Reid, Reid, Reid, Sato, Shepherd, van Langevelde, W. M. Goss, Zhang   +19 more
core   +2 more sources

Wine Tourism as a Catalyst for Sustainable Performance: The Mediating Role of Corporate Legitimacy and Green Innovation

Agribusiness, EarlyView.
ABSTRACT This study aims to explore the influence of Wine Tourism (WT) on the Sustainable Performance (SP) of wineries in Spain. It particularly investigates how Corporate Social Legitimacy (CSL) and Green Innovation (GI) may act as intermediary factors in this relationship.
Javier Martínez‐Falcó, Eduardo Sánchez‐García, Bartolomé Marco‐Lajara, Luis A. Millán‐Tudela   +3 more
wiley   +1 more source

A New Global ZTD Forecast Model Based on Improved LSTM Neural Network

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Zenith tropospheric delay (ZTD), consisting of zenith hydrostatic delay (ZHD) and zenith wet delay (ZWD), is a significant contributor to errors in precise positioning using the global navigation satellite system (GNSS) precise point positioning (PPP ...
Lin He, Yibin Yao, Chaoqian Xu, Zhang Huan, Feifei Tang, Changquan Ji, Zhuoya Liu, Wentan Wu   +7 more
doaj   +1 more source

The Hydrogen Epoch of Reionization Array Dish I: Beam Pattern Measurements and Science Implications

, 2016
The Hydrogen Epoch of Reionization Array (HERA) is a radio interferometer aiming to detect the power spectrum of 21 cm fluctuations from neutral hydrogen from the Epoch of Reionization (EOR).
Aguirre, James E., Ali, Zaki S., Bowman, Judd, Bradley, Richard F., Cheng, Carina, DeBoer, David R., Dickenson, Roger, Dillon, Joshua S., Doolittle, Phillip, Egan, Dennis, Ewall-Wice, Aaron, Hedrick, Mike, Hewitt, Jacqueline N., Jacobs, Daniel C., Klima, Patricia J., Kohn, Saul A., Moodley, Kavilan, Neben, Abraham R., Parsons, Aaron R., Patra, Nipanjana, Saliwanchik, Benjamin R. B., Schaffner, Patrick, Shelton, John, Taylor, H. A., Taylor, Rusty, Tegmark, Max, Thyagarajan, Nithyanandan, Wirt, Butch, Zheng, Haoxuan   +28 more
core   +1 more source

Real-time national GPS networks: Opportunities for atmospheric sensing [PDF]

, 2000
Real-time national Global Positioning System (GPS) networks are being established in a number of countries for atmospheric sensing. UCAR, in collaboration with participating universities, is developing one of these networks in the United States.
Anderson, DN, Avery, SK, Clark, RD, Droegemeier, KK, Fulker, DW, Kuettner, JP, Minster, J, Sorooshian, S, Stein, SA, Ware, RH   +9 more
core   +2 more sources

Design of a Hydroelectronic Solar‐Tracking System for Solar Panels

Energy Science &Engineering, EarlyView.
A prototype of a passive solar‐tracking system utilizing buoyant force based on water level was developed, and its MATLAB/Simulink model was implemented. This study is expected to encourage researchers to design solar‐tracking mechanisms using metals with different thermal expansion coefficients, air, oil, and other fluids. ABSTRACT This study presents
Ufuk Süğürtin, Türker Fedai Çavuş
wiley   +1 more source