Results 71 to 80 of about 36,916 (301)
Policy Spandrels: How Design Decisions Can Open Up Spaces for Unintended Policy Change
European Policy Analysis, EarlyView.ABSTRACT This article introduces the concept of policy spandrels to make sense of public policies producing second‐order effects that are unintentional from the perspective of policy design and yet are fraught with consequences. By analogy with architectural spandrels—leftover spaces that can be used for unforeseen purposes—policy change can be enabled
Martino Maggetti
wiley +1 more source
New Method of Tooth Pitch Deviation Measurement based on Laser Tracker for Mega Spur Gear
Jixie chuandong, 2019 To measure pitch deviation of mega spur gears, a new method for measuring the pitch of mega spur gears based on laser tracker is proposed. The measuring ability of laser tracker in large space is used to measure gear groove, and two adjacent pitch error ...
Zhang Bai, Lin Jiachun
doaj
Asstem of Corrected Spur Gears.
Journal of the Society of Mechanical Engineers, 1945 小齒車及び大齒車の曲げに對する強度を等しくすれば, この一對の齒車は動力傳逹用として最も望ましいものとなる.斯る條件を滿足する如く轉位係數を選擇する方法として, 齒形の隅肉を形成する二つのトロコイド曲線間の最短距離Sを, 同一材料から成る齒車對では相等しくなる如く, 又異なる材料の齒車對ではS2が材料の縱彈性率に反比例する如くとることを提案してある.Sの値が異なれば, 同一齒數の一對の齒車に對し, 種々異なる性質のものが出來る譯であるから, 斯る轉位齒車群の噛合性能圖を作製し, 中心距離又は使用目的により轉位係數の最後的決定をなす轉位平齒車の一方式に就て述べてある.尚壓力角αc=14°30′及びαc=20°の標準ラック型カッタに對し, 轉位係數の選擇に必要な圖表及び計算例をも示してある.
openaire +2 more sources
Spur-Gear-System Efficiency at Part and Full Load [PDF]
A simple method for predicting the part- and full-load power loss of a steel spur gearset of arbitrary geometry supported by ball bearings is described. The analysis algebraically accounts for losses due to gear sliding, rolling traction, and windage in ...
Anderson, N. E., Loewenthal, S. H.
core +1 more source
POWER: Performance Optimization With Evaluated Results for HEV Battery Selection via MCDM‐TOPSIS
Energy Science &Engineering, EarlyView.ABSTRACT The increasing transportation demands and environmental concerns in India necessitate the selection of optimal battery technologies for hybrid electric vehicles (HEVs). As the fifth‐largest car market globally, India faces rising vehicle demand, while the transportation sector remains a major contributor to air pollution.
Rinku Kumar Roy +5 more
wiley +1 more source
Method of calculation and test of dynamic tooth root strain for high-contact-ratio spur gears
Jixie chuandongObjectiveAiming at the difference of load sharing and dynamic characteristics between high-contact-ratio spur gears and conventional spur gears, a method for calculating the dynamic tooth root strain was proposed considering the dynamic characteristics ...
YU Pengfei +4 more
doaj
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
Life analysis of helical gear sets using Lundberg-Palmgren theory [PDF]
A mathematical model is developed for surface fatigue life of helical gears. The expected fatigue life of a pinion, gear, or gear set may be calculated from the model. An equation for the dynamic capacity of a gear set was also derived.
Coy, J. J., Zaretsky, E. V.
core +1 more source
Joy and Unrest: Transborder College Students' Sense of Belonging at the US–México Borderlands
New Directions for Higher Education, EarlyView.ABSTRACT In this study, we present the Transborder College Student Sense of Belonging Model, developed to understand how to create an inclusive and validating campus climate for Transborder students in postsecondary and higher education institutions along the US–México borderlands.
Vannessa Falcón Orta +3 more
wiley +1 more source
Jixie chuandong, 2007 The reasons causing to the different errors in the process of machining the non-circular spur gear according to the program segment are analyzed, the theoretical basis is provided to the machining accuracy of the non-circular spur gear.
严慧萍, 胡赤兵, 刘立美
doaj