Results 21 to 30 of about 41,812 (247)
Dizhen xuebao, 2020 基于2018年8月5日印度尼西亚地震震中（116.45°E，8.33°S）附近的澳大利亚达尔文站和位于震中磁力线共轭区域的武汉站的电离层测高仪观测数据，以及相同区域全球卫星导航系统接收机的观测数据，对该地震震前的电离层异常扰动特征进行了分析。结果显示，震前同时观测到了电离层F2层临界频率（foF2）和总电子含量（TEC）时间序列的异常。基于岩石圈-大气层-电离层直流电场耦合模式和美国国家大气研究中心的热层-电离层环流耦合模式（NCAR/HAO TIEGCM ...
Zhuangkai Wang +4 more
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, 2022 Los grandes volúmenes de residuos textiles y contaminación producidos por la industria de la moda y en especial por el fast fashion, la necesidad cada vez más inminente de exclusividad y privilegio de los consumidores, y el avance exponencial de la implementación de tecnología en productos cotidianos nos llevan a plantear Dress Tec, a un clic de tu ...
Romero Sierra, María Camila +3 more
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Privacy-Preserving Machine Learning on Apache Spark
IEEE Access, 2023 The adoption of third-party machine learning (ML) cloud services is highly dependent on the security guarantees and the performance penalty they incur on workloads for model training and inference.
Claudia V. Brito +4 more
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Online, automatic, near‐real time estimation of GPS‐TEC: IONOLAB‐TEC [PDF]
Space Weather, 2013 The variability of space weather can best be captured using total electron content (TEC), which corresponds to total number of electrons on a ray path. The dual‐frequency ground based GPS receivers provide a cost‐effective means for monitoring TEC. Computation of TEC for a single GPS station is a challenge due to various unknowns and ambiguities such ...
Sezen, U. +4 more
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Numerical and experimental analysis of thermal penetration depth in bare reinforced concrete structures during fire accidents [PDF]
E3S Web of Conferences, 2020 This work faces the problem of fire resistance and temperature penetration depth in reinforced concrete under construction subjected to fire. Indeed, the design approaches always neglect the fire-induced effects on the structures under construction.
Tagliafico Luca Antonio +5 more
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Dizhen xuebao利用美国喷气动力实验室（JPL）提供的全球电离层总电子含量（TEC）网格数据分析2018年5月28日吉林松原MS5.7地震空间电磁异常情况。通过算法对比确定滑动四分位法的优势，并利用该方法计算此次地震从震前14天至震后6天的电离层TEC异常变化的时间序列，结合空间环境和ΔTEC异常二维空间分布情况进一步分析，结果显示：① 极区磁亚爆强烈时段越靠近北部电离层扰动越强烈；② 震前TEC观测值先增大后减小，震后又回升，电离层异常幅度随着震中距的减小而增大；③ 电离层在空间分布上 ...
Hua Nian +6 more
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Regional ionospheric delay correction model for single frequency PPP users in Turkey [PDF]
Micro, Macro & Mezzo Geoinformation, 2015 Ionospheric delay is the major challenge for Single-Frequency Precise Point Positioning (SF-PPP) users. Therefore, a number of organizations have developed ionospheric delay correction products including the International GNSS Service Global Ionospheric ...
Mohamed ABDELAZEEM +2 more
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An exploratory study of interpretability for face presentation attack detection
IET Biometrics, 2021 Biometric recognition and presentation attack detection (PAD) methods strongly rely on deep learning algorithms. Though often more accurate, these models operate as complex black boxes.
Ana F. Sequeira +4 more
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Revista Electrónica de AnestesiaR, 2019 Acercarnos a un respirador anestésico (o bien, a una estación de trabajo para los más finos) es acercarnos a una maquinaria relativamente reciente. Y a pesar de que los actuales modelos se presentan con diseños futuristas, mostrando variedad de pantallas
Alberto Gironés Muriel
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Modeling of GPS total electron content over the African low-latitude region using empirical orthogonal functions [PDF]
Annales Geophysicae, 2019 In this paper, an empirical total electron content (TEC) model and trends in the TEC over the African low-latitude region are presented. GPS-derived TEC data from Malindi, Kenya (geographic coordinates 40.194∘ E, 2.996∘ S), and global ...
G. Andima +4 more
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