Results 1 to 10 of about 146,862 (339)

Risk zoning of lightning disaster in Hubei Province based on improved analytic hierarchy process

open access: yes暴雨灾害, 2023
Determining accurately the relative importance of evaluation indicators is one of the key technologies for lightning disaster risk zoning. In order to solve the problem of analytic hierarchy process (AHP) in judging the relative importance of indices by ...
Tianye YU   +3 more
doaj   +1 more source

Comparative analysis of cloud-ground flash data of two lightning location networks in Hubei Province

open access: yes暴雨灾害, 2021
Based on location mode, current intensity and clustering standard, quality control is carried on the lightning stroke data of ADTD two dimensional lightning location network (2D-LLN) and VLF/LF three dimensional lightning location network (3D-LLN) in ...
Rong YU   +3 more
doaj   +1 more source

Application of Statistical Distribution Models to Predict Health Index for Condition-Based Management of Transformers

open access: yesApplied Sciences, 2021
In this study, statistical distribution model (SDM) is used to predict the health index (HI) of transformers by utilizing the condition parameters data from dissolved gas analysis (DGA), oil quality analysis (OQA), and furanic compound analysis (FCA ...
Amran Mohd Selva   +6 more
doaj   +1 more source

Lightning threats in Nepal: occurrence and human impacts

open access: yesGeomatics, Natural Hazards & Risk, 2022
Nepal has a very large topographical variation; this elevation change has a major influence on lightning occurrence and human casualties. The Himalayan peaks cover the northern part of Nepal with low population density, the middle is covered by hills ...
Shriram Sharma   +11 more
doaj   +1 more source

Lightning strike probability and current simulation for simple structures and floating roof tank

open access: yesAlexandria Engineering Journal, 2022
Air terminations must be strategically positioned at high-risk points to prevent lightning bypass. The likelihood of a direct lightning strike to points on a building can be evaluated using the dynamic electro-geometrical model (DEGM), which considers ...
Aderibigbe Israel Adekitan, Michael Rock
doaj   +1 more source

Electromagnetic disturbance characteristic of typical high voltage switchgear interruption process in offshore wind farm based on integrated conduction model

open access: yesHigh Voltage, 2023
In an offshore wind farm, a high‐voltage switchgear interruption in an offshore substation creates a high‐frequency, high‐amplitude overvoltage that can cause severe electromagnetic interference problems in the intelligent electronic device.
Huaqing Wang   +4 more
doaj   +1 more source

Exploring Perceptions of Control Within Offender Cognition and Recidivism Paradigms

open access: yesEurope's Journal of Psychology, 2022
Elements of perceived control are associated with recidivism in offender populations. We investigated the application of locus of control to the frequency of personal involvement with the law and to beliefs surrounding the likelihood of future contact ...
Anistasha H. Lightning, Danielle Polage
doaj   +1 more source

The bubble formation characteristics of oil‐paper insulation and its influence on insulation performance

open access: yesHigh Voltage, 2023
Engineering experience shows that for transformers with long service life and serious moisture exposure, the inter‐turn paper insulation inside the winding will precipitate bubbles under the condition of electric field and conductor heating, which will ...
Yiyi Zhang   +6 more
doaj   +1 more source

A further look at dynamic electro-geometrical model: Its fundamentals and implementation

open access: yesAin Shams Engineering Journal, 2020
The rolling sphere method for air termination placement on a structure is easy to apply, but it cannot be used to determine the probability of lightning strike to different points on the structure.
Aderibigbe Israel Adekitan, Michael Rock
doaj   +1 more source

Risk zoning of lightning disaster in Hubei Province based on projection pursuit method

open access: yes暴雨灾害, 2019
Using the cloud-ground lightning locating data from 2007 to 2017 and the thunderstorm day data from 1961 to 2003 in Hubei, we selected six lightning parameters such as thunderstorm day, cloud-ground lightning density, lightning current wave-head ...
Tianye YU   +3 more
doaj   +1 more source

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