555 research outputs found

    Letter to Wes Daniels regarding use of scholarship funds, March 28, 1991

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    A letter from Ismael Gullon to Wes Daniels detailing Gullon\u27s experiences at the SEAALL Annual Meeting and his expenses

    Letter to Wes Daniels regarding award of a Lucile Elliott Scholarship, January 30, 1991

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    A letter from Ismael Gullon to Wes Daniels accepting the Lucile Elliott Scholarship awarded to him

    Asymptotic Bounds for the Size of Hom(A,GL_n(q))

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    Fix an arbitrary finite group A of order a, and let X(n,q) denote the set of homomorphisms from A to the finite general linear group GL_n(q). The size of X(n,q) is a polynomial in q. In this note it is shown that generically this polynomial has degree n^{2(1-a^{-1}) - \epsilon_r} and leading coefficient m_r, where \epsilon_r and m_r are constants depending only on r := n \mod a. We also present an algorithm for explicitly determining these constants

    Experience in Construction in Hard Rock with Roadheader in the Ariz -Basauri section of the Bilbao Metro

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    The object of the works to be performed is the extension of the Bilbao Metro network (Vizcaya, Basque Region, Spain). The Ariz-Basauri section of line 2 of the Bilbao Metro is being performed by the UTE Ariz-Basauri, a joint venture formed by the companies Exc. Cantábricas S.A., Vda. de Sainz S.A. and Obras Subterráneas S.A. The total length of the section is 2,372 m. of which 2,108 m. are performed in mine tunnel. The section will provide a service to the centre of Basauri with two stations, Ariz station commencing approximately at KP 1+050 and Basauri station at KP 2+105. Introduction of a new transport infrastructure such as a Metro system in an urban environment has an inevitable impact which must be quantified and, as far as possible, minimized. This impact on the urban environment includes a number of aspects, affecting networks and services, buildings, road traffic and rail traffic, not only influencing the line layout, but also and in particular the construction processes to be applied to ensure a minimum impact on both the existing infrastructure and the population. From the constructor’s viewpoint the shallow nature of the work at around 25 m should be highlighted as well as a work plan requiring 3 shifts and involving night work. The decision taken by ETS (Euskal Trenbide Sarea) not to use explosives due to the urban environment in which the Metro is developed is therefore comprehensible

    Neighbourhood Influences on Population Health: Time to Unpack the Black Box

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    [No abstract available]This work was financed by national funds through FCT—Fundação para a Ciência e a Tecnologia, I.P., under the project “HUG: The health impacts of inner-city gentrification, displacement and housing insecurity: a quasi-experimental multi-cohort study (PTDC/GES-OUT/1662/2020)” and the projects UIDB/04750/2020 and LA/P/0064/2020. AR was supported by National Funds through FCT, under the “Stimulus of Scientific Employment—Individual Support” programme within the contract CEECIND/02386/2018. PG is supported by Instituto de Salud Carlos III, Subdirección General de Evaluación y Fomento de la Investigación, Government of Spain (PI18/00782) and by the Young Projects program funded by Comunidad de Madrid and UAH under the project GentriHealth (CM/JIN/2021-028). EM is supported by The Health Foundation’s Social and Economic Value of Health programme (R-000002350)

    The importance of educating younger generations about raw materials and their uses in our daily life

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    Raw materials are of great importance for humankind as they enable the development of technology, drive industry and economy, and overall the lifestyle we know today. The paper is addressing the topic of interactive learning about the mineral raw materials, i.e. metals and non-metals. Due to population growth and consequently increased global demand for raw materials, there is a need to educate younger generations about the raw materials and their properties and origin, so they would know from an early age where the mineral products they use come from and how purchase decisions affect the social environments of people who live in countries with resources exploitation. Today’s trends in mining are oriented towards more sustainable exploitation and management, taking into account the economic, social and environmental aspects. An example of such is exploitation of secondary raw materials from tailings and heaps. But in some countries, mining is stuck in the past, using obsolete technologies causing increased pollution and strongly present linear economy approaches of take-use-dispose attitudes or even unethical approaches, such as children being exploited as a cheap workforce, people being abducted, tortured and even killed over minerals (minerals being exploited in such way are called blood or conflict minerals). Further, due to the potential negative impacts on health and safety, due to the emissions in air, water and surface disturbance, the public perception of mining is still perceived as negative in most cases. School curriculums most often lack description of current situations in the global mining. Therefore, within the EIT RawMaterials BRIEFCASE and 3D BRIЕFECASE projects the project partners provide the comprehensive view of the issues of today’s mining and use of raw materials. The paper presents the description of both projects and the non-conventional teaching methods — the hands-on and digital tools for pupils and teachers, i.e. the briefcases, the "Briefcase of mineral applications" game, workshops and the supporting materials. The main objective of projects is to raise the pupils’ awareness about the utility and indispensability of minerals and mining and the consequences of their uses and production systems, which would increase in the long term the awareness about the social and environmental consequences of raw material production
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