Results 11 to 20 of about 73,179 (247)

Energy efficient Technique for Cluster-head Selection in IoT Network [PDF]

open access: yesEAI Endorsed Transactions on Smart Cities, 2020
INTRODUCTION: Wireless sensor systems (WSN) clusters specific transducers that give detecting services to Internet ofThings (IoT) devices with limited energy and capacity assets. Clustering calculation assumes a significant job in controlpreservation for
Vishwas B, Gowtham M, Gururaj L
doaj   +1 more source

Calculation of expected remaining lifetime of dialysis patients in Japan

open access: yesRenal Replacement Therapy, 2020
Background The expected remaining lifetime of dialysis patients in Japan was only reported in 2003 and has not been reported thereafter. From 2003 to the present, several new therapeutic agents have been introduced.
Shigeru Nakai   +4 more
doaj   +1 more source

Three Dimensional Lifetime-Multiplex Tomography Based on Time-Gated Capturing of Near-Infrared Fluorescence Images

open access: yesApplied Sciences, 2022
We report a computed tomography (CT) technique for mapping near-infrared fluorescence (NIRF) lifetime as a multiplex three-dimensional (3D) imaging method, using a conventional NIR camera.
Masakazu Umezawa   +3 more
doaj   +1 more source

A simplified formulation for calculation of minority-carrier effective lifetime

open access: yesResults in Physics, 2018
An improved simple equation to calculate the minority-carrier effective lifetime in photoconductance measurements is proposed by the perturbation method.
Xiao-Xia Li, Ji-Huan He
doaj   +1 more source

Analysis of Orbital Lifetime Prediction Parameters in Preparation for Post-Mission Disposal [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2015
Atmospheric drag force is an important source of perturbation of Low Earth Orbit (LEO) orbit satellites, and solar activity is a major factor for changes in atmospheric density.
Ha–Yeon Choi   +2 more
doaj   +1 more source

Fission life-time calculation using a complex absorbing potential

open access: yesEPJ Web of Conferences, 2016
A comparison between the semi-classical approximation and the full quantum calculation with a complex absorbing potential is made with a model of the fission of 258Fm. The potential barrier is obtained with the constrained Skyrme HF+BCS theory.
Scamps Guillaume, Hagino Kouichi
doaj   +1 more source

Improved Calculation of Dynamic Load Capacity for Cylindrical Roller Thrust Bearings: Numerical Update of the Lifetime Reduction Factor η for Bearings with Small and Medium Spin-to-Roll Ratios

open access: yesLubricants
The standard procedures for calculating the lifetime of rolling bearings, defined by DIN ISO 281 and ISO/TS 16281, have been revisited in this work with a specific focus on redefining the η factor for cylindrical roller thrust bearings (CRTBs). The new η
Paul Sauvage   +3 more
doaj   +1 more source

Remaining Useful Life Estimation of Spindle Bearing Based on Bearing Load Calculation and Off-Line Condition Monitoring

open access: yesMachines, 2023
Spindles are key components of machine tools. An efficient estimation of the spindle condition and its prognosis can improve production efficiency and quality due to predictive maintenance planning.
Jiri Sova   +3 more
doaj   +1 more source

PROBLEM RAISING: THE QUESTION OF DESIGN PROCEDURES DEPENDING ON THE COMPOSITION OF MIXTURES

open access: yesFacta Universitatis. Series: Architecture and Civil Engineering
Different pavement structure design procedures have been carried out since 1960s in Hungary. The main principles of the most recent procedure were laid down in 1992 by Ervin Nemesdy, which was an empirical design guide.
Kornel Almassy, Domonkos Koch
doaj   +1 more source

Cumulative Damage and Life Prediction Models for High-Cycle Fatigue of Metals: A Review

open access: yesMetals, 2021
Fatigue design of engineering structures is typically based on lifetime calculation using a cumulative damage law. The linear damage rule by Miner is the universal standard for fatigue design even though numerous experimental studies have shown its ...
Kris Hectors, Wim De Waele
doaj   +1 more source

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