Results 31 to 40 of about 4,812,338 (197)

Attitudes of venture capital investors towards entrepreneurs with previous business failure, Belfast (June) [PDF]

open access: yes, 2004
Business failure represents a significant outcome of entrepreneurial activity and yet remains an underdeveloped area of research. This article focuses on the attitudes of VC investors towards entrepreneurs with a previous failure experience.
Eccles, S A, Cave, F D, Cope, J P
core   +4 more sources

New Interface for Assessing Wellbore Stability at Critical Mud Pressures and Various Failure Criteria: Including Stress Trajectories and Deviatoric Stress Distributions

open access: yesEnergies, 2019
This study presents a new interface for wellbore stability analysis, which visualizes and quantifies the stress condition around a wellbore at shear and tensile failure.
Jihoon Wang, Ruud Weijermars
doaj   +1 more source

The role of targeted viral load testing in diagnosing virological failure in children on antiretroviral therapy with immunological failure. [PDF]

open access: yes, 2012
Objectives  To determine the improvement in positive predictive value of immunological failure criteria for identifying virological failure in HIV-infected children on antiretroviral therapy (ART) when a single targeted viral load measurement is ...
Giddy, J   +33 more
core   +3 more sources

Study on Failure Criteria and the Numerical Simulation Method of a Coal-Based Carbon Foam under Multiaxial Loading

open access: yesAerospace, 2023
Coal-based carbon foam (CCF) has broad application prospects in aerospace, composite material tooling and other fields. However, the lack of failure criteria limits its promotion.
Qikai Zhuang   +4 more
doaj   +1 more source

Modelling damage and failure in carbon/epoxy non-crimp fabric composites including effects of fabric pre-shear [PDF]

open access: yes, 2006
A numerical material model for intra-laminar failure prediction of biaxial non-crimp fabric composites is presented. The model combines the elasto-plastic continuum damage constitutive model proposed by Ladevèze with the intra-laminar matrix failure ...
Greve, L., Pickett, Anthony K.
core   +1 more source

Second law of thermodynamics and the failure of rock materials [PDF]

open access: yes, 2001
The relation of nonequilibrium thermodynamics to some failure and fracture theories of rock mechanics is investigated. The basic concepts are given to connect failure to the properties of material equations describing the elastic properties.
Ván, Péter, Vásárhelyi, Balázs
core   +1 more source

Instrument referral criteria for PlusoptiX and SureSight based on 2021 AAPOS guidelines: A population-based study

open access: yesFrontiers in Public Health, 2022
ObjectiveThe study aims to assess two refractive instrument-based methods of vision screening (SureSight and PlusoptiX) to detect refractive amblyopia risk factors (ARFs) and significant refractive errors in Chinese preschool children and to develop ...
Qi Yan   +15 more
doaj   +1 more source

Assessing the Eligibility Criteria in Phase III Randomized Controlled Trials of Drug Therapy in Heart Failure With Preserved Ejection Fraction: The Critical Play-Off Between a "Pure" Patient Phenotype and the Generalizability of Trial Findings [PDF]

open access: yes, 2017
Aims: To investigate the effect of the different eligibility criteria used by phase III clinical studies in heart failure with preserved ejection fraction (HFpEF) on patient selection, phenotype, and survival.
Di Mario, C   +19 more
core   +1 more source

Long-term strength curves generated by the nonlinear Maxwell-type model for viscoelastoplastic materials and the linear damage rule under step loading

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2016
The nonlinear Maxwell-type constitutive relation with two arbitrary material functions is formulated for viscoelastoplastic materials and studied analytically in uni-axial case to reveal capabilities of the model and its applicability scope. Its coupling
Andrew V Khokhlov
doaj   +1 more source

Analysis of Failure Criteria in Laminas Reinforced with Unidirectional Curaua Fiber Fabric [PDF]

open access: yesMaterials Research, 2019
Natural fibers are increasingly used as composite reinforcement in different fields of engineering. Caraua fiber stands out for its good mechanical properties and adherence to resin; however, little is known about its behavior in the manufacture of a ...
Lucemaide Batista Miranda Ferreira   +2 more
doaj   +2 more sources

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