Results 71 to 80 of about 624 (223)
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
Abordagem para solução de um problema metrológico na indústria: medição de engrenagens [PDF]
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Metrologia Científica e Industrial.Muitos problemas de qualidade têm sua origem em uma situação não ideal da metrologia na empresa ...
Gemaque, Marcos Jorge Alves
core
THE LOGARITHMIC SPIRAL AND ITS SPHERICAL COUNTERPART
Logarithmic spirals are isogonal trajectories of pencils of lines. From a series of geometric consequences, we pick out a few which are relevant for kinematics: When a logarithmic spiral rolls on a line, its asymptotic point traces a straight line. Hence,
Hellmuth Stachel +2 more
doaj +2 more sources
ABSTRACT This paper examines how accounting and control practices constitute and distribute agency and responsibility for sustainability in global supply chains. Drawing on a field study in the fashion industry, we describe the sustainability control practices used by a major buyer firm vis‐à‐vis its suppliers and trace their evolution from a ...
Martin Messner +2 more
wiley +1 more source
The relative curvature of the spur gear mesh point is one of the key geometric parameters of the tooth profile, which has a significant impact on the stress distribution and mesh stiffness of the gear.
CHEN Zhiwei, LIU Lei, KONG Rong
doaj
Gears are one of the most crucial parts of power transmission systems in various industrial applications. Recently, there emerged a need to design gear drivers due to the rising performance requirements of various power transmission applications, such as
Fatih Karpat +3 more
doaj +1 more source
Calculation and Analysis of Meshing Contact of Involute Spur Gear
The analysis of meshing process of involute spur gear is an important basis to judge the transmission quality,and especially contact stress,transmission error and meshing stiffness are key indexes. According to the TCA model of spur gear,curvature radii in different meshing points are extracted.
Yuda Wang +5 more
openaire +1 more source
Talking Emotional Safety: School Leaders and Language in a Chicago School Safety Reform
ABSTRACT This article examines the ways that school leaders used buzzwords when speaking about youth “emotional safety,” in a Chicago Public Schools safety reform aimed at reexamining the role of school policing. Drawing on observations from pandemic‐era virtual school council meetings, we suggest a recognizable register of speech developed around the ...
Uma Blanchard +2 more
wiley +1 more source
The Geometry of Involute Gears
Of all the many types of machine elements which exist today, gears are among the most commonly used. The basic idea of a wheel with teeth is extremely simple, and dates back several thousand years.
J. R. Colbourne, Colbourne, J. R.
core +1 more source
Research of the Calculation Method of the Gear Time-varying Mesh Stiffness based on FEM
At present,the formula for calculating time-varying meshing stiffness of gears is often simplified according to the ISO experimental values. This method cannot accurately reflect the comprehensive characteristics of the meshing stiffness of different ...
Zhang Bobo +5 more
doaj

