Results 101 to 110 of about 165,528 (232)
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
Engineering Science and Technology, an International JournalThis study presents an approach based on the Taguchi method to evaluate the energy consumption performance of spur and elliptical gear hydraulic pumps. Output flow is one of the essential indicators of gear pump performance.
Mithat Yanikören
doaj +1 more source
History, EarlyView.Abstract This article analyses the racialized and gendered constraints faced by African sportswomen in international sporting competitions, from the interwar period to the 1980s, with a focus on the policing and expectations framing young international athletes’ acceptable behaviour.
Claire Nicolas
wiley +1 more source
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
Jixie chuandong, 2014 Gear mesh stiffness is the foundation of the study on gear dynamics.Taking the spur gear as research object,the finite element model of the spur gear with root crack is established,and the accurate calculation method of gear mesh stiffness is proposed ...
唐进元 +3 more
doaj
ALL POSSIBLE PASTS: Heritage, Simulacra, and Gentrification in Seoul
International Journal of Urban and Regional Research, EarlyView.Abstract Urban heritage scholars have often criticized simulacra as ‘bad’ copies that degrade the ‘good’ model of the past through commercialization and gentrification. This article challenges such Platonic dichotomies of good/bad and model/copy, arguing that the binary of good heritage and bad simulacra is flawed because heritage is itself actualized ...
Myung In Ji
wiley +1 more source
Condition Monitoring of Gear Systems using Vibration Analysis [PDF]
It is often impractical to measure vibrations directly at /or close to their sources when condition monitoring gearbox systems. It is common to measure the vibration distant from the source due to limited access to the component which is to be monitored.
Al-Arbi, Salem
core +2 more sources
Jixie chuandong, 2010 The geometrical parameters of the involute arc cylindrical gear are introduced.Starting from their tooth flank equations,the equations of the lines of contact and contact ratio are analyzed.On this basis,it proposes the method for calculating the contact
吴伟伟 +3 more
doaj
Is the rent too high? Land ownership and monopoly power
Real Estate Economics, EarlyView.Abstract Pricing power in real estate markets can reduce housing supply and redevelopment relative to the social optimum. We show how pricing power interacts with popular redevelopment subsidies and zoning regulations. Using building‐level rental income data from NYC, we find that increased concentration is correlated with increased rents.
C. Luke Watson, Oren Ziv
wiley +1 more source
Integrative Zoology, EarlyView.Spatiotemporal distribution of odontocete cetaceans within China's Jiushan Archipelago National Nature Reserve was investigated. Fishing vessels significantly reduced both cetacean acoustic detections and feeding activity, whereas gillnets selectively suppressed cetacean feeding behavior without affecting overall cetacean detection rates.
Yifan Liu +10 more
wiley +1 more source