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2.587  Articles
1 of 260 pages  |  10  records  |  more records»
The presence of ionospheric perturbations in possible association with two huge earthquakes (Noto-hanto peninsula and Niigata-chuetu-oki earthquakes) in 2007 was studied on the basis of a conventional statistical study for a particular propagation path fr... see more

This study reports on a possible very low frequency/low frequency (VLF/LF) subionospheric precursor to a recent earthquake in Japan. As the epicenter of this large Japanese earthquake on March 11, 2011, was located just on the great-circle path from one o... see more

The perturbations of the ionosphere which are observed prior to significant earthquakes (EQs) have long been investigated and could be considered promising for short-term EQ prediction. One way to monitor ionospheric perturbations is by studying VLF/LF el... see more

We examined changes in the spectral composition of the low frequency (LF) subionospheric signals from the NRK transmitter (37.5 kHz) in Iceland that were received in Bari (Italy) relative to the earthquake that occurred in L’Aquila on April 6, 2009. In ou... see more

The unusual variations observed in the records of the integrated field intensity of the atmospherics (IFIA) at 6 kHz and 9 kHz at Agartala, Tripura, in the north-eastern state of India (latitude, 23° N; longitude, 91.4° E) during the large earthquake on O... see more

Indoor area is an area that lacks a signal so that the signal attenuation continues to be problems that often occur. To overcome these problems need the support of a communication system that can include a signal in the room so that customers can keep com... see more

The traditional Back-propagation algorithm has several weaknesses, including long training times and significant iterations to achieve convergence. This study aims to optimize traditional Back-propagation using the cyclical rule method to cover these weak... see more

Currently, artificial neural networks are being developed as a tool that can help with human tasks. The main purpose of this study is to identify the structure of an eggplant, and to distinguish the type of eggplant. This study empirically tested the shap... see more

Penelitian ini bertujuan untuk mengidentifikasi pengelompokan data kualitas udara dan mendapatkan predikat hasil pengelompokan kualitas data udara tersebut. Data yang digunakan adalah data kualitas udara Kota Pekanbaru yang diperoleh dari pengolahan data ... see more

1 of 260 pages  |  10  records  |  more records»