Results 11 to 20 of about 500,783 (148)

Supersmooth grinding technology of spindle outer circle

open access: yesJin'gangshi yu moliao moju gongcheng, 2023
In order to improve the surface roughness and roundness of the outer cylindrical surface of the spindle after precision grinding, a novel vertical precision grinding method was proposed, and a vertical grinding device was developed.
Bin LI   +5 more
doaj   +1 more source

Specialised for the Swamp, Catered for in Captivity? A Cross-Institutional Evaluation of Captive Husbandry for Two Species of Lechwe

open access: yesAnimals, 2020
Lechwe are specialised wetland antelope that can have a strict social hierarchy or perform lekking during breeding. The southern lechwe (Kobus leche) and the Nile lechwe (K.
Paul E. Rose, Lewis J. Rowden
doaj   +1 more source

The chameleon groups of Richard J. Thompson: automorphisms and dynamics [PDF]

open access: yes, 1995
The automorphism groups of several of Thompson's countable groups of piecewise linear homeomorphisms of the line and circle are computed and it is shown that the outer automorphism groups of these groups are relatively small.
C. G. Chehata   +20 more
core   +3 more sources

Inextensible domains [PDF]

open access: yes, 2013
We develop a theory of planar, origin-symmetric, convex domains that are inextensible with respect to lattice covering, that is, domains such that augmenting them in any way allows fewer domains to cover the same area.
Kallus, Yoav
core   +1 more source

A Numerical Method for Conformal Mappings [PDF]

open access: yes, 1980
A numerical technique is presented for calculating the Taylor coefficients of the analytic function which maps the unit circle onto a region bounded by any smooth simply connected curve.
Fornberg, Bengt
core   +1 more source

Computational Model of Outer Circle and Inner Ellipse Shield Tunnel Lining Structure

open access: yesAdvances in Civil Engineering, 2021
Subway tunnels are mostly located in strata with an uneven pressure. This uneven pressure is usually manifested by lateral pressure coefficients less than 1.
Shuancheng Gu, Guanlin Sun, Peili Su
doaj   +1 more source

Englishes in the Expanding Circle: Focus on Asia

open access: yesRussian Journal of Linguistics, 2020
In Kachrus original classification, the countries of the Expanding Circle were those where English was learned primarily as a foreign language in schools. English did not play an institutional role within the country.
Andy Kirkpatrick
doaj   +1 more source

Corrosion Damage Evolution Study of the Offshore Cable-Stayed Bridge Anchorage System Based on Accelerated Corrosion Test

open access: yesJournal of Marine Science and Engineering, 2023
The cable-stayed bridge anchorage system is prone to serious corrosion problems in the offshore environment, threatening its service safety. Based on the copper accelerated salt spray (CASS) test, the anchorage system was subjected to accelerated ...
Guowen Yao   +4 more
doaj   +1 more source

World Englishes Representation in English Textbooks of Indonesian Elementary Schools

open access: yesEnglish Learning Innovation, 2023
This study aimed at investigating the representation of World Englishes (WE) in English textbooks used in elementary schools in Indonesia. Two English books for a sixth-graders were used as the data sources.
Rifka Nida Annisa   +1 more
doaj   +1 more source

Cultural Elements in EFL Course Books

open access: yesGaziantep Üniversitesi Sosyal Bilimler Dergisi, 2016
Language echoes cultural values, norms and many other features of a society, and is regarded as an inseparable part of such characteristics. Despite the fact that values and features of a society may be kept apart from language in language education ...
Ömer Gökhan ULUM, Erdoğan BADA
doaj   +1 more source

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