Results 31 to 40 of about 247 (195)
Sustainable Development, EarlyView.ABSTRACT The promotion of clean energy is critical to achieving sustainable development. This study investigates the factors that affect the exports, trade potential, and revealed comparative advantage (RCA) of clean energy products (CEPs) in the emerging Asian economies (EAEs).
Arvind Goswami +2 more
wiley +1 more source
Research of the Geometric Characteristic of Undercutting and Limit Normal Point in Gear Geometry
Jixie chuandong, 2015 The undercutting phenomena and the limit normal point are two important concepts in gearing theory,design and manufacturing.Based on the different opinions about them in the current research of limit normal point and the geometry and movement ...
Chen Ningxin
doaj
Key Technical Fields and Future Outlooks of Space Manipulators: A Survey
SmartBot, EarlyView.This paper systematically reviews the technological development of space manipulators, emphasizing the unique challenges posed by space environments. It examines four areas: structural design, modeling, planning, and control, while introducing typical ground test platforms.
Gang Chen +12 more
wiley +1 more source
Jixie chuandong, 2014 Based on the theory of gear geometry and dynamics,the dynamic calculation model of asymmetric involute spur gear is established,and the programming is produced by Matlab,the dynamic characteristic of asymmetric involute spur gears is studied.The results ...
朱良, 郗军红, 于慧
doaj
Concussed: Unintended Consequences of the Guardian Cap Mandate in the NFL
Southern Economic Journal, EarlyView.ABSTRACT Guardian Caps are padded shells worn over American football helmets to cushion impacts and reduce concussion risks. In 2022, the NFL mandated their use for specific position groups during preseason practices, later expanding this requirement. While the league praised the Caps for enhancing player safety, skeptics argue they may promote riskier
Kerianne Lawson Rubenstein, Todd Nesbit
wiley +1 more source
New method for geometrical design of spur gears with asymmetric involute-trochoid profile.
Revista Técnica de la Facultad de Ingeniería, 2013 This paper establishes a general mathematical model of the geometry of asymmetric spur gears with involute - trochoid tooth profile. This method is different of currently used for obtain three-dimensional models of that spur gear kind those, and it can ...
J. Cárdenas Oliveros +3 more
doaj
Chinese Journal of Mechanical EngineeringProfile shift is a highly effective technique for optimizing the performance of spur gear transmission systems. However, tooth surface wear is inevitable during gear meshing due to inadequate lubrication and long-term operation.
Wenzheng Liu +3 more
doaj +1 more source
Measuring Geometrical Parameters of Involute Spur Gears to Sub-pixel Resolution [PDF]
Procedings of the British Machine Vision Conference 1992, 1992 The problem of accurate determination of the position, orientation and width of involute spur gear teeth using a single front-lit image is addressed. The information is used to compute global measures of tooth concentricity and pitch variations across a gear wheel.
Oakley, JP, Robinson, MJ
openaire +2 more sources
AGRICULTURE IN A SOCIALIST CITY: Towards an Alter‐Urban Political Ecology
International Journal of Urban and Regional Research, EarlyView.Abstract Urban political ecology has developed as a critique of capitalist urbanization. This article develops the concept of alter‐urban political ecology to define urban environments emerging not from capitalist urbanization but from efforts to transform it. Drawing on archival research and ethnographic fieldwork in five urban farms in socialist Cuba,
Gustav Cederlöf
wiley +1 more source
Experimental Study of Linear Profile Modification in Spur Gear Leg
International Journal of TechnologyGears with the involute profile are assumed to be rigid and good at producing mating gear. They are also deformable and deflectable, indicating additional space is required to avoid interference from the unpredictable shaft, misalignment, and dynamic ...
Agus Sigit Pramono +2 more
doaj +1 more source