Results 21 to 30 of about 54,210 (248)
GPS network observation of traveling ionospheric disturbances following the Chelyabinsk meteorite blast [PDF]
Annales Geophysicae, 2016 We use the Global Positioning System (GPS) network in northwest China and central Asia to monitor traveling ionospheric disturbances (TIDs), which were possibly excited by the large meteorite blast over Chelyabinsk, Russia, on 15 February 2013.
F. Ding +9 more
doaj +1 more source
Inhomogeneous structure of the high-latitude ionosphere as observed at Norilsk [PDF]
, 2001 In March and August/September 1995, February 1996, and in March-April 1998, observations of the inhomogeneous structure of the high-latitude ionosphere were carried out at Norilsk (geomagnetic latitude and longitude are 64.2 N and 160.4 E, and L=5.2 ...
Lipko, Yu. V.
core +4 more sources
Interference quantum correction to conductivity of Al xGa 1-xAs/GaAs double quantum well heterostructures near the balance [PDF]
, 2012 We present the results of experimental investigations of the interference quantum correction to the conductivity of the gated double quantum well Al xGa 1-xAs/GaAs/Al xGa 1-xAs heterostructures.
Germanenko, A. V. +3 more
core +1 more source
Heliyon, 2018 Purpose: A new magnetic resonance imaging (MRI) based scoring system for temporomandibular joint (TMJ) internal derangement was developed to predict disease severity and the likelihood of invasive treatment.
Roman M. Kowalchuk +4 more
doaj +1 more source
Observations of Unusual Daytime Range Spread F at Middle Latitude During the Afternoon Hours
Space Weather, 2021 In this study, an unusual daytime range spread F event recorded by the ionosonde installed at Zhangye (ZHY, 39.4°N, 100.13°E, dip latitude 29.65°N) station during the afternoon of December 23, 2016 was presented.
Lehui Wei +10 more
doaj +1 more source
The factors influencing municipal solid waste generation in bauchi town, Nigeria [PDF]
, 2017 This study investigated the factors influencing municipal solid waste generation (MSWG) in Bauchi town, the administrative headquarters of Bauchi state, Nigeria.
Gana, Bukar Abba +3 more
core +1 more source
Proceedings of the third international conference on Information and knowledge management - CIKM '94, 1994 TID hash joins are a simple and memory-efficient method for processing large join queries. They are based on standard hash join algorithms but only store TID/key pairs in the hash table instead of entire ttrples. This typically reduces memory requirements by more than art order of magnitude bringing substantial benefits.
Marek, Robert, Rahm, Erhard
openaire +2 more sources
On the selection of secondary indices in relational databases [PDF]
, 1993 An important problem in the physical design of databases is the selection of secondary indices. In general, this problem cannot be solved in an optimal way due to the complexity of the selection process.
Blanken, Henk M. +2 more
core +6 more sources
Observations of AGW/TID propagation across the polar cap: a case study [PDF]
Annales Geophysicae, 2011 In this paper, we present observational evidence for the trans-polar propagation of large-scale Traveling Ionospheric Disturbances (TIDs) from their nightside source region to the dayside.
H. T. Cai +6 more
doaj +1 more source
Remote SensingUsing dense global navigation satellite system data and brightness temperature data across the New Zealand and Australia regions, we tracked the propagation of traveling ionospheric disturbances (TIDs) associated with the 15 January 2022 Tonga volcanic ...
Xiaolin Li +6 more
doaj +1 more source