Results 21 to 30 of about 48,467 (216)

Hydromechanical Deep Drawing Process and Optimization of Fender Based on FEM

open access: yesJournal of Harbin University of Science and Technology, 2018
Aiming at the problem of failure and insufficient drawing when stamping forming for complex structure parts,we conduct numerical simulation of hydromechanical deep drawing to automobile front fender.
LIU Xiao-jing   +3 more
doaj   +1 more source

Risk Assessment in Energy Infrastructure Installations by Horizontal Directional Drilling Using Machine Learning

open access: yesEnergies, 2021
Nowadays we can observe a growing demand for installations of new gas pipelines in Europe. A large number of them are installed using trenchless Horizontal Directional Drilling (HDD) technology. The aim of this work was to develop and compare new machine
Maria Krechowicz, Adam Krechowicz
doaj   +1 more source

A glimpse of horizontal directional drilling productivity factors

open access: yesMATEC Web of Conferences, 2018
Horizontal Directional Drilling (HDD) is a trenchless technology provides an installation alternative that offers a lot of benefit compared to traditional open-cut method.
Salleh Mohd Norizam   +4 more
doaj   +1 more source

Achievable Information Rates for Coded Modulation with Hard Decision Decoding for Coherent Fiber-Optic Systems [PDF]

open access: yes, 2017
We analyze the achievable information rates (AIRs) for coded modulation schemes with QAM constellations with both bit-wise and symbol-wise decoders, corresponding to the case where a binary code is used in combination with a higher-order modulation using
Amat, Alexandre Graell i   +2 more
core   +2 more sources

Analysis of heating degree day requirments changes under climate change in South Khorasan [PDF]

open access: yesتحقیقات کاربردی علوم جغرافیایی, 2018
Heating requirements are one of the most important human issues in the fields of agriculture, tourism and energy management in the present and future .Knowing the extent of these changes can be very effective in making decision makers.
hossein Imani pour   +2 more
doaj  

Linked versus unlinked hospital discharge data on hip fractures for estimating incidence and comorbidity profiles

open access: yesBMC Medical Research Methodology, 2012
Background Studies comparing internally linked (person–identifying) and unlinked (episodes of care) hospital discharge data (HDD) on hip fractures have mainly focused on incidence overestimation by unlinked HDD, but little is known about the impact of ...
Vu Trang, Day Lesley, Finch Caroline F
doaj   +1 more source

Discharge mechanism in HDD

open access: yesJournal of the Magnetics Society of Japan, 2010
The risk of electrical discharge between the head and disk in a Hard Disk Drive (HDD) system is discussed. Discharge can cause GMR/TMR element to degrade and/or damage the disk, which would result in quality degradation. Within this paper, the root cause and the mechanism of such discharge and HDD design concept are discussed to avoid the issue.
M. Miyatake, N. Kodama
openaire   +1 more source

A validated methodology for the prediction of heating and cooling energy demand for buildings within the Urban Heat Island: Case-study of London [PDF]

open access: yes, 2010
This is the post-print version of the final paper published in Solar Energy. The published article is available from the link below. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and ...
Anna Mavrogianni   +22 more
core   +1 more source

Efficient determination of vehicle emission factors by fuel use category using on-road measurements: downward trends on Los Angeles freight corridor I-710 [PDF]

open access: yesAtmospheric Chemistry and Physics, 2013
To evaluate the success of vehicle emissions regulations, trends in both fleet-wide average emissions as well as high-emitter emissions are needed, but it is challenging to capture the full spread of vehicle emission factors (EFs) with chassis ...
N. Hudda   +3 more
doaj   +1 more source

Assessing Risk Priority Numbers of Failures in the Screw Tightening Machine of a Hard Disk Drive Production System

open access: yesJournal of Machine Engineering, 2022
In a competitive environment, many production industries must reduce costs while maintaining asset value and reliability. In the manufacturing process, the machine is essential because downtime can inhibit and stop production. This study investigated the
Naraphorn Paoprasert   +2 more
doaj   +1 more source

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