Results 101 to 110 of about 36,916 (301)

CSR disclosure and investment efficiency in MENA countries: The moderating role of CSR committee

open access: yesStrategic Change, EarlyView.
ABSTRACT Corporate social responsibility disclosure (CSRD) is often recognized as a transparency mechanism that allows companies to communicate their commitment to CSR. However, CSRD may also exacerbate agency conflicts. This study addresses these two contrasting perspectives by investigating the impact of CSRD on investment efficiency and exploring ...
Mohamed Malek Belhoula   +3 more
wiley   +1 more source

RESEARCH OF DEFECTS IN SPUR GEAR

open access: yesMokslas - Lietuvos ateitis, 2010
This study presents a review of gear diagnostic methods. Also presented nonlinear dynamic model of spur gear. We modeled backlash, bearing flexibility and variable teeth stiffness.
openaire   +3 more sources

Applicability of Novel Laser Scanning Microscopy Techniques in Demonstrating Characteristic Features of Porokeratosis: In Vivo and Ex Vivo Investigation

open access: yesJEADV Clinical Practice, EarlyView.
ABSTRACT Background Porokeratoses represent a group of keratinization disorders characterized histopathologically by the presence of a cornoid lamella. The recognition of porokeratosis as a genodermatosis, along with its association with increased risk of skin cancer, underscores the importance of accurate and timely diagnosis.
Rahime Inci   +5 more
wiley   +1 more source

Analysis of dedicated revenue scale and diversity among U.S. state fish and wildlife agencies

open access: yesThe Journal of Wildlife Management, EarlyView.
Most revenue for state fish and wildlife agencies originates from 3 sources: 1) hunting, fishing, and trapping licenses; 2) Federal Aid in Wildlife Restoration Grants; and 3) Federal Aid in Sportfish Restoration Grants. However, states also generate substantial revenue through 22 additional unique mechanisms, ranging from sales taxes to license plate ...
Charlie R. Booher   +5 more
wiley   +1 more source

标准滚刀滚切变位直齿轮的刀架角计算

open access: yesJixie chuandong, 2010
Aiming at the adjustment of tool post angle in the process of spur gear hobbing,the model of the hob rolling spur gear with addendum modification is established,and the influence of the angle on the tooth profile and tooth thickness is calculated by ...
陈琰, 钱志良
doaj  

Predicted effect of dynamic load on pitting fatigue life for low-contact-ratio spur gears [PDF]

open access: yes
How dynamic load affects the surface pitting fatigue life of external spur gears was predicted by using the NASA computer program TELSGE. Parametric studies were performed over a range of various gear parameters modeling low-contact-ratio involute spur ...
Lewicki, David G.
core   +1 more source

A common formula for the combined torsional mesh stiffness of spur gears [PDF]

open access: yes, 2007
This paper presents the results of a detailed two-dimensional analysis of the torsional stiffness of several pairs of spur gears in mesh using finite element methods.
Howard, Ian, Kiekbusch, Timo
core  

Movement Disorders in Neuromyelitis Optica Spectrum Disorder: A Systematic Review

open access: yesMovement Disorders Clinical Practice, EarlyView.
Abstract Background Several movement disorders (MD) have been reported to occur in neuromyelitis optica spectrum disorder (NMOSD). No extensive review has addressed the whole spectrum of MD in NMOSD. Objective This article aims to review MD in NMOSD, describing its prevalence and features.
Luciana A.F. Bringel   +18 more
wiley   +1 more source

Research on the Dynamic Response of a Cracked-Spur Gear System with Parameter Uncertainty

open access: yesMachines
In this paper, the time-varying mesh stiffness (TVMS) of a gear is meticulously derived using the potential energy method (PEM) and an analytical expression for it is obtained.
Ping Fang, Yang Yang, Jin Zeng
doaj   +1 more source

Effect of Variations in the Ring Thickness on the Dynamic Performance of the Bimetal Gears

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This study used a six‐degrees‐of‐freedom dynamic model to analyze the dynamic response of bimetal spur gears. Aluminum alloy forms the core of the bimetal gears, and a uniform‐thickness steel ring surrounds the teeth. Gear mesh stiffness of bimetal gears and the transmission error have been assessed using a numerical approach based on finite ...
Bikramjit Singh   +2 more
wiley   +1 more source

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