Results 31 to 40 of about 150,245 (261)
Shaping a Morphogen Gradient for Positional Precision [PDF]
Biophysical Journal, 2010 Morphogen gradients, which provide positional information to cells in a developing tissue, could in principle adopt any nonuniform profile. To our knowledge, how the profile of a morphogen gradient affects positional precision has not been well studied experimentally.
He, Feng +7 more
openaire +2 more sources
Remote Sensing, 2019 Real-time multi-GNSS precise point positioning (PPP) requires the support of high-rate satellite clock corrections. Due to the large number of ambiguity parameters, it is difficult to update clocks at high frequency in real-time for a large reference ...
Xinyuan Jiang +4 more
doaj +1 more source
Remote Sensing, 2022 Galileo satellites can broadcast signals on five frequencies, namely E1, E5A, E5B, E5 (A+B), and E6. The multi-frequency integration has become an emerging trend in Global Navigation Satellite System (GNSS) data processing.
Zhehao Zhang, Lin Pan
doaj +1 more source
The Study of Position Accuracy Using Precise Point Positioning (PPP) In Perspective of Indonesian National Standard of Horizontal Reference Network [PDF]
E3S Web of Conferences, 2019 Precise point positioning is a GNSS based positioning method that is known to regaining more precise information about major systematical errors in its functional model.
Azis Rasyad A. +2 more
doaj +1 more source
An improved trilateration positioning algorithm
Gong-kuang zidonghua, 2020 Aiming at the problem that trilateration positioning algorithm based on weighted least squares (WLS) lost positioning information in linearization process, an improved trilateration positioning algorithm was proposed.
GAO Li, YANG Xuemiao
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Cup‐like nuclei are a distinctive morphological feature observed in certain cases of acute lymphoblastic leukemia (ALL). We provide evidence that they characterize DUX4/ERG ALL independently of IKZF1 deletion and reveal marked mitochondrial accumulation in this ALL subset.
Chloé Arfeuille +9 more
wiley +1 more source
Research on precise positioning of AGV vision based on fuzzy path rectification
Dianzi Jishu Yingyong, 2018 For the traditional autonomous navigation vehicle(AGV), the problem of high-precision path tracking and precise positioning of key points can not be satisfied.
Li Zhao, Shu Zhibing, Yan Liang
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Fertility preservation (FP) is increasingly integrated into the care of pediatric patients exposed to gonadotoxic therapy or conditioning for hematopoietic stem cell transplantation (HSCT), yet perioperative data in infants and toddlers remain scarce.
Kerstin Saalabian +13 more
wiley +1 more source
Gong-kuang zidonghua, 2022 During the underground transmission of wireless signal, the measurement between card reader and marker card fails due to signal strength attenuation and interference.
TANG Lijun, WU Wei, LIU Shisen
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Acute lymphoblastic leukemia (ALL) is the most common pediatric cancer, with an overall survival now surpassing 90% in developed countries. However, treatments are not without adverse effects. In this study, we apply the severe toxicity‐free survival (STFS) framework to determine the prevalence of 21 physician‐defined severe ...
Lane Collier +10 more
wiley +1 more source