Results 71 to 80 of about 2,265 (257)

Den attendance by Arctic foxes experiencing 10 years of increasing tourism

Wildlife Biology, EarlyView.
Wildlife tourism is a growing industry, and an increasing number of people seek to observe and interact with wild animals in their natural surroundings. In Iceland, the native Arctic fox Vulpes lagopus is widespread and has been under heavy hunting pressure for centuries.
Ester Rut Unnsteinsdóttir, Borgný Katrínardóttir, Bruce J. McAdam   +2 more
wiley   +1 more source

Study on Impact Excitation and System Dynamic Characteristics of Shield Machine Planetary Gear Train

工程科学与技术
Objective This study aims to reveal the evolution law of the internal and external meshing state of the sun gear and planetary gear induced by the collision between the sun gear and planetary gear.
Zeyin HE, Hongjian WU, Zhen YANG, Feng YI, ShiFeng PEI   +4 more
doaj  

Joint Modeling of Planetary Gear Train and Bearings of Wind Turbines for Vibration Analysis of Planetary Bearing Outer Ring Looseness Fault

Energies
The planetary bearing looseness fault can cause the planetary gear train to fail. Conventional modeling methods do not consider complex component-coupling relationships for fault feature analysis.
Chuandi Zhou, Ruiming Wang, Deyi Fu, Na Zhao, Xiaojing Ma   +4 more
doaj   +1 more source

Modeling of the process of gear shifting in planetary gear trains of motor vehicles

Vojnotehnički Glasnik, 2011
Gear boxes, i. e. the realization of their functions, especially gear shift, have a big impact on vehicle operation quality through their effects on the performance of vehicles and their comfort.
Aleksandar R. Grkić, Čedomir V. Duboka, Milan M.Krsmanović   +2 more
doaj   +1 more source

Reduction Gears with Inclined Planetary Gear and Arc Tooth Bevel Gear

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 2006
We have designed new reduction gear, in which the arc tooth bevel gear is fixed on the inclined planetary gear. Making use of the shim, we can easily adjust the backlash of the reduction gear. Such basic characteristics as the noise, the torsion and the transmission efficiency of this system, with and without the backlash, are measured by changing the ...
Yoichi NAGASAKI, Makoto FUJII, Hiroyuki OONISI   +2 more
openaire   +2 more sources

Hunting and fishing harvest data collection: a horizon scanning exercise from the French context

Wildlife Biology, EarlyView.
Legal and societal moves increasingly lead leisure hunting and fishing practitioners to record their harvest. The total number of individuals harvested per population per year is the minimum required information to feed into demographic models and allow science‐based management. Some few schemes record more detailed data, hence allowing better‐informed
Matthieu Guillemain, Léo Bacon, Aurélie Barboiron, Pierre Defos du Rau, Cyril Eraud, Aurélie Flesselle, Charlotte Francesiaz, Quentin Josset, Yoann Lechauve, Kevin Le Rest, Hervé Lormée, Maxime Passerault, Maryline Pellerin, Caroline Penil, Betty Plaquin, Adrien Tableau, Julien Terraube, Laurent Beaulaton   +17 more
wiley   +1 more source

Collaborating in future states—Contextual instability, paradigmatic remaking, and public policy

Australian Journal of Public Administration, EarlyView.
Abstract Collaboration is ubiquitous in public policy life, with its presence and profile determined by prevailing governance conditions. Commitments to globalisation and marketisation in the latter part of the 20th century marked the onset of an era defined by collaboration, between and across tiers and spheres of government, with non‐state actors ...
Helen Sullivan
wiley   +1 more source

Automatic identification of redundant gears in planetary gear trains

Mathematical and Computer Modelling, 1994
Redundant gears should be eliminated in the design of automatic transmissions in order to reduce inertial power loss and manufacturing costs. The purpose of this paper is to present a computerized method for the identification of redundant gears in planetary gear trains.
Hsu, Cheng-Ho, Lin, Yuh-Long
openaire   +1 more source

REPRESENTING POLLUTION AT THE AGRARIAN–URBAN FRONTIER: Participatory Documentary Film‐Making in Bar Elias, Lebanon

International Journal of Urban and Regional Research, EarlyView.
Abstract The Beqaa Valley in Lebanon has become increasingly polluted, and residents are attributing illness to improper waste disposal and dumping. This article explores local epistemologies of pollution’s causes and effects in three films, which were researched and produced by local residents of Bar Elias, a small town in the Beqaa, which has rapidly
Hannah Sender, Hanna Baumann, Joana Dabaj   +2 more
wiley   +1 more source

New Method for Isomorphism Identification of Planetary Gear Trains based on Traversing Loop

Jixie chuandong, 2020
Isomorphism identification is one of the indispensable processes in structure synthesis of planetary gear trains. It is of great significance for the creation of novel planetary gear train with excellent transmission characteristics.
Jiawen Ding, Wei Sun
doaj