Results 71 to 80 of about 24,143,953 (388)

Development of a new method for creating the working surface of a large-sized transformable reflector [PDF]

Космические аппараты и технологии
In the design of large-sized umbrella-type reflectors, a form-building structure is used to create the working surface. The form-building structure in the open position is a system of tensioned threads.
P. V. Belousov, Y. B. Tomilina, V. A. Didik, A. А. Puhov   +3 more
doaj  

HPIPS: A High-Precision Indoor Pedestrian Positioning System Fusing WiFi-RTT, MEMS, and Map Information

Sensors, 2020
In order to solve the problem of pedestrian positioning in the indoor environment, this paper proposes a high-precision indoor pedestrian positioning system (HPIPS) based on smart phones.
Lu Huang, Baoguo Yu, Hongsheng Li, Heng Zhang, Shuang Li, Ruihui Zhu, Yaning Li   +6 more
doaj   +1 more source

The Hunga Tonga‐Hunga Ha'apai Volcanic Eruption as Seen in Satellite Microwave Observations and MiRS Temperature Retrievals

Geophysical Research Letters, 2023
The strongest volcanic eruption since the 19th century occurred on 15 January 2022 at Hunga Tonga‐Hunga Ha'apai, generating unprecedented atmospheric waves not seen before in observations.
Yong‐Keun Lee, Neil Hindley, Christopher Grassotti, Quanhua (Mark) Liu   +3 more
doaj   +1 more source

Transcriptional network analysis of PTEN‐protein‐deficient prostate tumors reveals robust stromal reprogramming and signs of senescent paracrine communication

Molecular Oncology, EarlyView.
Combining PTEN protein assessment and transcriptomic profiling of prostate tumors, we uncovered a network enriched in senescence and extracellular matrix (ECM) programs associated with PTEN loss and conserved in a mouse model. We show that PTEN‐deficient cells trigger paracrine remodeling of the surrounding stroma and this information could help ...
Ivana Rondon‐Lorefice, Jose I. Lopez, Aitziber Ugalde‐Olano, Maite Zufiaurre, Ianire Astobiza, Natalia Martin‐Martin, Laura Bozal‐Basterra, Saioa Garcia‐Longarte, Amaia Zabala‐Letona, Sofia Rey, Aida Santos‐Martin, Miguel Unda, Ana Loizaga‐Iriarte, Mariona Graupera, Paolo Nuciforo, Arkaitz Carracedo, Isabel Mendizabal   +16 more
wiley   +1 more source

Study on LOS to Vertical Deformation Conversion Model on Embankment Slopes Using Multi-Satellite SAR Interferometry

ISPRS International Journal of Geo-Information
Slant range geometry plays a crucial role in interpreting synthetic aperture radar (SAR) observations, especially in converting line-of-sight (LOS) surface deformations to actual vertical subsidence. This paper proposes a new conversion model to retrieve
Jie Liu, Tao Li, Sijie Ma, Qiang Shan, Weiping Jiang   +4 more
doaj   +1 more source

Jamming of GNNS signals [PDF]

Scientific Technical Review, 2018
GNSS technology has been used for many applications. Beside military applications, GNSS technology is used for mini UAVs - drones. One of the possible approaches for achieving anti-drone capabilities is a jamming receiver of GNSS at drone.
Pokrajac Ivan, Kozić Nadica, Čančarević Ana, Brusin Radiana   +3 more
doaj  

Combination of Smartphone MEMS Sensors and Environmental Prior Information for Pedestrian Indoor Positioning

Sensors, 2020
In view of the inability of Global Navigation Satellite System (GNSS) to provide accurate indoor positioning services and the growing demand for location-based services, indoor positioning has become one of the most attractive research areas.
Lu Huang, Hongsheng Li, Baoguo Yu, Xingli Gan, Boyuan Wang, Yaning Li, Ruihui Zhu   +6 more
doaj   +1 more source

Overview of molecular signatures of senescence and associated resources: pros and cons

FEBS Open Bio, EarlyView.
Cells can enter a stress response state termed cellular senescence that is involved in various diseases and aging. Detecting these cells is challenging due to the lack of universal biomarkers. This review presents the current state of senescence identification, from biomarkers to molecular signatures, compares tools and approaches, and highlights ...
Orestis A. Ntintas, Sylvia Vagena, Pavlos Pantelis, Giorgos Theocharous, Russel Petty, Konstantinos Evangelou, Vassilis G. Gorgoulis   +6 more
wiley   +1 more source

An Indoor DFEC Ranging Method for Homologous Base Station Based on GPS L1 and BeiDou B1 Signals

Sensors, 2020
High-precision navigation and positioning technology for indoor areas has become one of the research hotspots in the current navigation field. However, due to the complexity of the indoor environment, this technology direction is also one of the research
Heng Zhang, Shuguo Pan, Chuanzhen Sheng, Xingli Gan, Baoguo Yu, Lu Huang, Yaning Li   +6 more
doaj   +1 more source

The Challenge of Surface Type Changes Over the Aral Sea for Satellite Remote Sensing of Precipitation

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Frequent false signals of precipitation in satellite passive microwave retrievals over the Aral Sea have been identified as being caused by an outdated surface database. The database includes the surface type, elevation, and the percentage of the primary
Quanhua Liu, Yong-Keun Lee, Christopher Grassotti, XingMing Liang, Stanley Q. Kidder, Sheldon Kusselson   +5 more
doaj   +1 more source