20,397 research outputs found
Investigation of rock behavior and strength in situ and laboratory techniques adaptability to a lunar exploration program
Rock testing techniques for lunar landing site and for lunar samples returned to earth laborator
Techniques for measuring stresses in rock on the earth - Adaptability to a lunar exploration program
Techniques and instrument developments for stress measurements in rocks on earth and moo
The measurement of rock deformability in bore holes on earth. Adaptability to a lunar exploration program
Dilatometers, bore hole jacks, and penetrometers, for measurement of rock deformability in bore holes on eart
Teenage drinking and interethnic friendships.
This report explores the links between young people’s interethnic friendships and their drinking patterns and behaviours.
Britain is a multicultural society, but little is currently known about if, and how, young people mix with friends from different ethnic backgrounds and the potential impact of this on drinking attitudes and behaviours. Research was undertaken to examine these links using quantitative and qualitative methods among a sample of 14-and 15-year-olds in diverse locations in London and Berkshire.
The report:
• explores the intra- and interethnic mix of young people’s
friendship groups as described by young people in
questionnaires and interviews;
• analyses how drinking patterns vary by ethnicity, religion and gender;
• investigates the links between young people’s background
characteristics, their friendship groups (including the ethnicity of friends) and their reported drinking rates; and
• looks at the implications of the findings, including
recommendations for harm reduction based on education and
peer support programmes
Matrix De Rham complex and quantum A-infinity algebras
I establish the relation of the non-commutative BV-formalism with
super-invariant matrix integration. In particular, the non-commutative
BV-equation, defining the quantum A-infinity-algebras, introduced in "Modular
operads and Batalin-Vilkovisky geometry" IMRN, Vol. 2007, doi:
10.1093/imrn/rnm075, is represented via de Rham differential acting on the
matrix spaces related with Bernstein-Leites simple associative algebras with
odd trace q(N), and with gl(N|N). I also show that the Lagrangians of the
matrix integrals from "Noncommmutative Batalin-Vilkovisky geometry and Matrix
integrals", Comptes Rendus Mathematique, vol 348 (2010), pp. 359-362,
arXiv:0912.5484, are equivariantly closed differential forms.Comment: published versio
Studying Migrant Assimilation Through Facebook Interests
Migrants' assimilation is a major challenge for European societies, in part
because of the sudden surge of refugees in recent years and in part because of
long-term demographic trends. In this paper, we use Facebook's data for
advertisers to study the levels of assimilation of Arabic-speaking migrants in
Germany, as seen through the interests they express online. Our results
indicate a gradient of assimilation along demographic lines, language spoken
and country of origin. Given the difficulty to collect timely migration data,
in particular for traits related to cultural assimilation, the methods that we
develop and the results that we provide open new lines of research that
computational social scientists are well-positioned to address.Comment: Accepted as a short paper at Social Informatics 2018
(https://socinfo2018.hse.ru/). Please cite the SocInfo versio
Techniques development for whale migration tracking
Effort leading to the completion of development and fabrication of expansible whale harnesses and whale-carried instrument pods is described, along with details of the gear. Early preparative effort for a January-February 1974 field expedition is reported
Lunar surface engineering properties experiment definition Quarterly report, 1 Oct. - 31 Dec. 1968
Mechanical properties of simulated lunar soil
Material studies related to lunar surface exploration. Volume 4 - Preliminary studies for the design of engineering probes Final report, 6 Mar. 1967 - 30 Jun. 1968
Preliminary design of engineering probes for studying lunar surface material propertie
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