We report on a systematic ground-based validation of DMSP-OLS night lights imagery to detect rural electrification in Vietnam. Based on an original survey of village-level units in Vietnam, this study compares nighttime light output from the U.S. Air Force Defense Meteorological Satellite Program’s Operational Linescan System (DMSP-OLS) against ground-based survey data on electrical infrastruct...

This paper presents a conception of 3 kV DC traction power system based on distribution sources, as an alternative to traditional substation. The consists supplying modules (SM) installed along the electrified railway line, distance between adjacent SMs are much shorter, than substations in system. Each SM energy storage (ESS), and could be charged from adjacent, substation via catenary, medium...

Generalizing a method presented in an earlier paper, we express the complex potentials E and Φ of all stationary axisymmetric electrovac spacetimes that correspond to axis data of the form directly associated with the various multipole moments.

In this paper, a novel DC bus voltage control strategy of the traction system is proposed for overhead line and energy storage device (ESD) hybrid railway vehicles. This realizes increase regenerative brake reduction consumed in powering by boosting motor voltage. When boost applied, separated from breaker, which generally equipped. paper proposes considering both breaker operation management o...

Stray voltage (usually <10 V) can occur in farms. However, very little information is available related to sheep. In addition, little work has been carried out on the effects of the contextual conditions under which the animals are submitted to stray voltage. The aims of this study were (i) to determine the threshold voltage at which lambs start to express avoidance behaviour and (ii) to test i...

Abstract Background In the past, fires around railways were often associated with steam locomotives. Although locomotives have disappeared from everyday rail traffic, still occur. A vegetation fire near Bzenec (Czech Republic) on 21 June 2018 affected, for example, 124,110 m 2 of forest and grassland. The investigation revealed that was caused by a spark passing train. this study, we analyzed o...

We report a one-step method to prepare porous polymeric microcages from blend emulsion solutions via electrified jetting.

In recent years, the international community has expanded efforts in programme evaluation to improve the accountability of development projects. This paper presents approaches to implementing state-of-the-art evaluations in rural electrification projects, taking into account specific challenges that researchers face in such interventions. Furthermore, it suggests a particular approach to assess...