Results 11 to 20 of about 275,472 (203)

The Obstacle Detection Method of UAV Based on 2D Lidar

open access: yesIEEE Access, 2019
With the widespread use of UAVs in daily life, there are many sensors and algorithms used to ensure flight safety. Among these sensors, lidar has been gradually applied to UAVs due to its stability and portability.
Lanxiang Zheng   +3 more
doaj   +1 more source

Three Dimensional Structure Optimization of Proton Exchange Membrane Fuel Cell with Radial Flow Field Based on Topology Optimization

open access: yesElectrochemistry, 2023
This article uses the topological optimization method to optimize the flow field of radial proton exchange membrane fuel cells. Due to the high computational cost of this method, the model was simplified to a two-dimensional model, and the cathode flow ...
Cheng QU, Minggang ZHENG
doaj   +1 more source

An evaluation of activities based on the use of the history of mathematics as a tool [PDF]

open access: yesJournal of Pedagogical Research, 2020
In this study, teacher candidates were asked to evaluate activities designed with the use of the history of mathematics (HoM) as a tool in terms of the obstacles to the use of the HoM.
Suphi Önder Bütüner
doaj   +1 more source

Improved Gait Algorithm and Mobility Performance of RT-Mover Type Personal Mobility Vehicle

open access: yesIEEE Access, 2014
We have developed a personal mobility vehicle (PMV) with four driven wheels that is capable of negotiating obstacles with a leg motion mechanism. When obstacles are encountered, wheels are lifted, moved ahead in a stepping-like motion, and lowered back ...
Shuro Nakajima
doaj   +1 more source

Detecting and Correcting for Human Obstacles in BLE Trilateration Using Artificial Intelligence

open access: yesSensors, 2020
One of the popular candidates in wireless technology for indoor positioning is Bluetooth Low Energy (BLE). However, this technology faces challenges related to Received Signal Strength Indicator (RSSI) fluctuations due to the behavior of the different ...
Sharareh Naghdi, Kyle O’Keefe
doaj   +1 more source

Masca de protecție – barieră în procesul de ascultare a suspectului sau inculpatului // Protective mask - barrier in the process of listening to the suspect or defendant

open access: yesAnalele Ştiinţifice ale Universităţii "Al.I. Cuza" din Iaşi. Ştiinţe Juridice, 2022
Listening to persons in the investigation of criminal activities is detached in terms of importance from the rest of the evidence-gathering activities.
Lavinia Pricină-Bobeică
doaj   +1 more source

Analysis of optimal maneuver using an obstacle layout method

open access: yesNihon Kikai Gakkai ronbunshu, 2014
In this paper, a novel trajectory generation method for numerical analysis of a vehicle dynamics has been investigated. An obstacle layout method which lays obstacles around preliminarily given course shape can easily provide a state variable inequality ...
Soichiro WATANABE, Masanori HARADA
doaj   +1 more source

Obstacles to strategy implementation and success factors: A review of empirical literature [PDF]

open access: yesStrategic Management, 2021
The purpose of this study is to identify obstacles and success factors evident from empirical studies affecting strategy implementation and to provide an overview of the empirical literature.
Vigfússon Kristján   +2 more
doaj   +1 more source

Classification of Barriers to Digital Transformation in Higher Education Institutions: Systematic Literature Review

open access: yesEducation Sciences, 2023
Digital transformation of higher education institutions (HEIs) is of paramount importance in today’s technology-driven world. However, there are numerous barriers that hinder the successful implementation of digital transformation initiatives in HEIs. In
Thomais Gkrimpizi   +2 more
doaj   +1 more source

The effect of the obstacle on the hydraulic response of the composite hydraulic structure [PDF]

open access: yesINCAS Bulletin, 2020
Experimental investigations are carried out to study the physics of the flow that passes weir-gate hydraulic structure and encounters obstruction with or without installation of downstream opening.
Rafi M. QASIM   +3 more
doaj   +1 more source

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