Results 51 to 60 of about 165,528 (232)

Predicting Major Depression Among Diverse Online Gamers: The Role of Internet Addiction and Spirituality

open access: yesJournal of Addictions &Offender Counseling, EarlyView.
ABSTRACT This study analyzed whether religious or spiritual affiliation and therapy enrollment protect against symptoms meeting Major Depressive Disorder criteria beyond demographic, Internet addiction, and described therapy enrollment. Findings illustrated one risk factor and one protective factor associated with experiencing symptoms that meet Major ...
Lindsay A. Lundeen, John R. McCall
wiley   +1 more source

A comparative experimental study on the diagnostic and prognostic capabilities of acoustics emission, vibration and spectrometric oil analysis for spur gears [PDF]

open access: yes, 2007
Prognosis of gear life using the acoustic emission (AE) technique is relatively new in condition monitoring of rotating machinery. This paper describes an experimental investigation on spur gears in which natural pitting was allowed to occur.
Mba, David   +2 more
core   +1 more source

直齿内齿轮固有频率灵敏度有限元分析

open access: yesJixie chuandong, 2008
Internal spur gear is the object of study,and the solid model is built based on PRO/E,while finite element is built based on PRO/MECHANICA.Make use of sensitivity analysis technology of PRO/MECHANICA to study the main structure parameter witch affects ...
李峰, 王松雷, 韩刚
doaj  

Research on Loaded Transmission Error of Internal Short Tooth Spur Gears

open access: yesJixie chuandong, 2023
Loaded transmission error is an important parameter in evaluating the meshing performance of gears. The smaller the fluctuant amplitude of the loaded transmission error is, the better the meshing performance is.
Yin Xunmin, Jia Haitao, Zhang Xijin
doaj  

Multidexterity: Reframing Strategic Agility for Hyper‐Transformation

open access: yesStrategic Change, EarlyView.
ABSTRACT Organizations experiencing hyper‐transformation—continuous, multidimensional, accelerated, and simultaneous organizational changes—face some limitations in traditional strategic agility and ambidexterity frameworks. Current strategic agility emphasizes rapid responsiveness but insufficiently addresses the nuanced management of varying speeds ...
Alessandro Lanteri
wiley   +1 more source

直齿内齿轮应力灵敏度有限元分析

open access: yesJixie chuandong, 2008
Internal spur gear is the object of study and build finite element analysis modal.Solid model is built based on PRO/E,and finite element is built based on pro/mechanica.Make use of sensitivity analysis technology of pro/mechanica to study the main ...
吉晓梅, 王松雷, 韩刚, 殷玉枫
doaj  

Energy Options to Reduce Deforestation Using EKC Model: A Region‐Based Longitudinal Approach

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Forests are carbon storage that can reduce carbon emissions, so deforestation (decrease in forest area) is a serious threat to environmental sustainability. Indonesia is a large carbon sink due to its large forests. However, deforestation is quite high due to economic activities that use fossil energy.
Krismanti Tri Wahyuni   +3 more
wiley   +1 more source

A framework for investigating fish population density responses to habitat fragmentation

open access: yesOikos, EarlyView.
Globally, fish populations that rely on rivers are being fragmented by in‐stream barriers, but it is unclear how pervasive any negative population responses to fragmentation are. We developed a modeling framework for estimating density responses of fishes upstream and downstream of in‐stream barriers and applied it to learn how low‐head dams have ...
Sean A. Lewandoski   +3 more
wiley   +1 more source

渐开线直齿内齿轮的轮齿变形挠度解析

open access: yesJixie chuandong, 2008
The first thing is to calculate the deformation of the loaded gear,when researching dynamic characteristic of the gear transmission and controlling the transmission quality.In order to deduce a simplified approximate formula to calculate the tooth ...
康焱, 石照耀, 林家春, 姚文席
doaj  

An extinction‐emergency metacollection: Maximising future recovery options for Rhodomyrtus psidioides (Myrtaceae), threatened by Myrtle Rust

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
A challenge for wild plant conservation is the rising incidence of plant pathogens that are difficult to interdict, contain and manage. Invasive, fast‐moving, broad‐spectrum pathogens impose societal costs through losses of intrinsically valuable wild biodiversity, ecosystem function, current and potential genetic and biological assets, culturally ...
Robert O. Makinson   +7 more
wiley   +1 more source

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