Results 1 to 10 of about 324,320 (238)

Desain Camouflage Tower di Kawasan Kota Baru Parahyangan Padalarang-Bandung

open access: yesJurnal Rekayasa Elektrika, 2021
Kota Baru Parahyangan residential area, located in Padalarang sub-district of Bandung, has the quality and coverage of 3G and 4G cellular services that are not optimal, thus it has become a complaint of customers to the cellular providers.
Hasanah Putri   +2 more
doaj   +1 more source

COMPARISON OF OPTIMIZATION STRATEGIES AND ESTIMATION TECHNIQUES FOR RADIO NETWORK PLANNING AND OPTIMIZATION PROBLEMS

open access: yesInformation and Telecommunication Sciences, 2023
Background. Radio network planning is one of the main phases of the cellular network lifecycle, as it determines capital and operating costs and allows system performance evaluation at any given time.
Володимир Прокопець   +1 more
doaj   +1 more source

THE AFRICAN GEOSPATIAL SCIENCES INSTITUTE (AGSI): A NEW APPROACH TO GEOSPATIAL TRAINING IN NORTH AFRICA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
The African Geospatial Sciences Institute (AGSI) is currently being established in Tunisia as a non-profit, non-governmental organization (NGO). Its objective is to accelerate the geospatial capacity development in North-Africa, providing the facilities
S. Oeldenberger, K. B. Khaled
doaj   +1 more source

Towards early warning of gravitational slope failure with co-detection of microseismic activity: the case of an active rock glacier [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2019
We developed a new strategy for disaster risk reduction for gravitational slope failure: we propose validating on a case study a simple method for real-time early warning of gravity-driven failures that considers and exploits both the heterogeneity of ...
J. Faillettaz   +3 more
doaj   +1 more source

A survey on 3G mobile network traffic performance and analysis in Ethiopia

open access: yesCogent Engineering, 2022
Mobile phones have an impact on the economic development of a country as the technology develops through the provision of high-value 3G and 4 G data services accessed via smartphones, tablets, and dongles that deliver mobile data services to businesses ...
Fanuel Melak Asmare   +2 more
doaj   +1 more source

Time forecast of a break-off event from a hanging glacier [PDF]

open access: yesThe Cryosphere, 2016
A cold hanging glacier located on the south face of the Grandes Jorasses (Mont Blanc, Italy) broke off on the 23 and 29 September 2014 with a total estimated ice volume of 105 000 m3.
J. Faillettaz, M. Funk, M. Vagliasindi
doaj   +1 more source

NATM TUNNELS – CONSIDERATION OF THE PARTLY DAMAGED PRIMARY LINING IMPACT FOR THE SECONDARY LINING EVALUATION

open access: yesActa Polytechnica, 2020
Tunnels excavated by the New Austrian Tunnelling Method (NATM) are traditionally supported by a double-shell lining. The primary lining is generated from reinforced sprayed concrete with rockbolts, the secondary lining is generated from in-situ cast ...
Vlastislav Trunda, Matouš Hilar
doaj   +1 more source

Experimental Evaluation of the Shadowing of a Planar Antenna Caused by a Quadcopter Frame

open access: yesElectrical, Control and Communication Engineering, 2020
The use of mobile data transfer can significantly increase the range of the remote-controlled operation of multirotor aerial vehicles. The planar antennas of ready-to-use 3G/LTE cellular communication dongles provide a low-cost and lightweight ...
Heydarov Ibrahim, Brodnevs Deniss
doaj   +1 more source

An Experimental Study of Ground-Based Equipment Real Time Data Transfer Possibility by Using Cellular Networks

open access: yesElectrical, Control and Communication Engineering, 2017
An expanding mobile cellular network data transfer service offers cheaper wireless solutions for various data transfer needs. This paper presents an experimental testing of data transfer performance in 3G and 4G modes. The purpose of testing was to check
Brodņevs Deniss, Kutins Aleksandrs
doaj   +1 more source

Electrical scanning probe microscopy of electronic and photonic devices: connecting internal mechanisms with external measures

open access: yesNanotechnology Reviews, 2016
The inner workings of semiconductor electronic and photonic devices, such as dopants, free charge carriers, electric potential, and electric field, are playing a crucial role in the function and performance of the devices.
Ban Dayan   +7 more
doaj   +1 more source

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