Extreme learning with Artifical Electric Field Algorithm (EL-AEFA) for estimation of Short-term Vehicular Traffic System

Author(s):  
Sarat Chandra Nayak ◽  
Sanjib Kumar Nayak ◽  
Alina Dash
2021 ◽  
Vol 61 (4) ◽  
pp. 477-482
Author(s):  
A. P. Kropotkin

Abstract To explain the populations of the outer-belt energetic electrons, including relativistic electrons, that sporadically appear in the magnetosphere, a mechanism was proposed long ago for the acceleration of those electrons by short-term bursts of the electric field, which appear on the night side during substorm disturbances (Kropotkin, 1996). This mechanism can be substantially specified if the modern concepts of bursty bulk flows in the geomagnetic tail, the occurrence of dipolarization fronts, and the excitation of localized field-aligned-resonant poloidal Alfvén oscillations involving a strong component of the electric field in the dawn-dusk direction are taken into account.


Open Physics ◽  
2018 ◽  
Vol 16 (1) ◽  
pp. 69-74
Author(s):  
Cetin Kurnaz ◽  
Dogan Yildiz ◽  
Serap Karagol

Abstract The level of electromagnetic radiation (EMR) exposure increases day by day as natural consequences of technological developments. In recent years, the increasing use of cellular systems has made it necessary to measure and evaluate EMR originating from base stations. In this study, broadband and band selective electric field strength (E) measurements were taken at four different times in order to evaluate the change of short term E in Atakum district of Samsun, Turkey. The measurements were collected from 46 different locations using a SRM 3006 and a PMM 8053 EMR meter in a band from 100 kHz to 3 GHz, and the maximum E (Emax) and the average E (Eavg) were recorded. The highest values have been noticed in these measurements at 9.45 V/m and 17.53 V/m for Eavg and Emax respectively. Apart from these measurements, 24 hour long term E measurements were taken at a location where the highest value was observed and analyzed, to observe the change of Es during a day. At the end of the study, a tentative mathematical model that helps in computing the total E of the medium with 95% accuracy, was obtained.


2019 ◽  
Vol 187 (3) ◽  
pp. 279-285 ◽  
Author(s):  
M A Hosseini ◽  
A Hosseini ◽  
S Jarideh ◽  
H Argasi ◽  
F Shekoohi-Shooli ◽  
...  

Abstract This study investigated the effect of short-term exposure to Wi-Fi signals on the cognitive functions of the mind. After obtaining permission from the local Ethics Committee of Shiraz University of Medical Sciences and approval by the Iranian Registry of Clinical Trials (IRCT2017041233398N1), 45 male and female students from Shiraz University of Medical Sciences volunteered to participate in this study. They were exposed to Wi-Fi signals in two sham and exposure sessions, each for 2 hours. After completion, they took part in reaction time, short-term memory, and reasoning ability tests. After scoring, the data were analysed by SPSS software. In addition, the electric field strength and power density were calculated. The results showed no statistically significant differences between the mean scores of reaction time, short-term memory, and reasoning ability in sham and exposure. Also, the obtained values from the electric field strength and power density (E = 4.1 Vm−1, P = 0.446 Wm−2) were lower than that of threshold values by the International Commission on Non-Ionizing Radiation Protection (ICNIRP). Our results can greatly reduce concerns regarding the effects of short-term exposure to Wi-Fi waves on cognitive functions.


2012 ◽  
Vol 209-211 ◽  
pp. 938-944
Author(s):  
Hong Yun Shi ◽  
Xiao Qing Zeng ◽  
Dong Bing Shi ◽  
Wen Chen Yang ◽  
Kai Xiang Cao

Large-scale events are characterized by temporally large-scale passengers and spatially short-term aggregation. To transport high intensity passengers aggregated in short term safely and efficiently, the key is to build a reliable, flexible, and green sustainable pattern of the multi-modal transportation system. This paper presents a multi-modal transportation system oriented for large- scale events, and intensive transportation system, coordinated non-Motorized traffic system and self-improving auxiliary traffic system is designed respectively. Based on statistical data of travel modes and passenger satisfaction questionnaire during Shanghai Expo, the multi-modal transportation system case of Shanghai Expo is studied, and the application effects and enlightenments of this system are discussed in detail, aiming at offering the reference for the design of urban multi-modal transport system for large-scale events.


Author(s):  
Risikat Folashade O. Adebiyi ◽  
◽  
Kabir Ahmad Abubilal ◽  
Abdoulie Momodou Sunkary Tekanyi ◽  
Busayo Hadir Adebiyi

1996 ◽  
pp. 139-154
Author(s):  
Panayiotis Varotsos ◽  
Konstantin Alexopoulos ◽  
Maria Lazaridou

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