Design concepts for the ASTROMAG cryogenic system

Described is a proposed cryogenic system used to cool the superconducting magnet for the Space Station based ASTROMAG Particle Astrophysics Facility. This 2-meter diameter superconducting magnet will be cooled using stored helium II. The paper presents a liquid helium storage concept which would permit cryogenic lifetimes of up to 3 years between refills. It is proposed that the superconducting coil be cooled using superfluid helium pumped by the thermomechanical effect. It is also proposed that the storage tank be resupplied with helium in orbit. A method for charging and discharging the magnet with minimum helium loss using split gas-cooled leads is discussed. A proposal to use a Stirling cycle cryocooler to extend the storage life of the cryostat will also be presented

The inherent subjectivity of the apparently objective in research on ethnicity and class

Policy making in the area of immigration and ethnic affairs relies increasingly on the findings of social science research. A new conventional wisdom is emerging in sociological and economic studies. Its claim to objectivity is based on the use of a methodology which emphasises the use of sophisticated statistical methods, especially multiple regression models. The present paper suggests that this apparently objective approach is actually based on a set of of subjectivist and voluntaristic assumptions on: the nature of society, the character of the groups being examined, and on the practice and logic of scientific research. This type of analysis leads to the reconstitution of the ethnic group through the use of dummy variables, which mask many of the specific structural features of labour migrants. Moreover, the emphasis on multiple regression models makes it necessary to quantitify the variables to be examined. This involves a subjective decision by the researcher: either to give a numerical value to something for which there is no single correct form of quantification, or to exclude it altogether from the analysis. The approach is based on a human capital model, in which migrants are seen only as economic subjects in a rational market system. This blocks historical understanding of the way labour relations function in capitalist societies, in particular of the significance of labour migration, and of the role of segmentation of the labour market according to ethnciity and gender in class relations

Increased Ambiguity and Resistance While New College Leaders Learn Their Roles

This article explores tolerance of ambiguity and its effect on change resistance from the perception of new higher education presidents who often feel overwhelmed by the level of perceived resistance while they learn a new environment. Two separate yet complementary studies were compared for resistance to change: one qualitative and one quantitative. The qualitative study used a phenomenological approach to explore a new higher education leaders’ perspective of facing resistance during the change process. The quantitative study examined the 36-question survey results of individual higher education employees affected by higher education change. The intersection of the two studies explored, through different lenses, how leaders face perceived resistance versus how employees perceive change and then exhibit resistant-like behavior. Results included that the majority of higher education employees were intolerant to ambiguity, and that uncertainty due to new leadership exacerbated this condition. The authors argued against the prevailing advice of putting vision delivery on hold. Rather, the authors recommend that new leaders clearly communicate the vision formation process while maintaining intentional and transparent collaboration with the community

Sense of Belonging of New Members who are First-Generation College Students: A Single-Institution Qualitative Case Study

While there is research to suggest that first-generation college students benefit from and have a greater sense of belonging as a result of involvement in student organizations, there is limited research on how first-generation college students develop a sense of belonging specifically through their involvement as new members of a fraternity or sorority. This study, constructed within a single-institution qualitative case study framework, highlighted the unique role that organizational involvement, mentorship, emotional support, and first-generation status and identity can play in the development of sense of belonging for fraternity and sorority new members that are first-generation college students

Transnationalism and Social Work Education

Transnational movements, networks, and relationships are everywhere in this “world on the move” (Williams & Graham, 2014, p. i1). Transnational peoples maintain relationships of interdependence and support with families and communities in their places of origin, often returning regularly, while starting new lives and making new connections. Transnationalism is characterized by mobilities and networks, by social integration, and by extended and extensive relationship ties of family, neighborhood, religious faith, or combinations thereof (Valtonen, 2008). While disciplines across the world including sociology, human geography, and cultural anthropology engage with the implications of transnationalism (Bauböck & Faist, 2010), social work in England and mainland Europe has not achieved similar levels of engagement. As Cox and Geisen state: “the social world is being transformed by migration and social work is playing catch-up” (2014, p. i162)

Orthographic facilitation in oral vocabulary acquisition

An experiment investigated whether exposure to orthography facilitates oral vocabulary learning. A total of 58 typically developing children aged 8-9 years were taught 12 nonwords. Children were trained to associate novel phonological forms with pictures of novel objects. Pictures were used as referents to represent novel word meanings. For half of the nonwords children were additionally exposed to orthography, although they were not alerted to its presence, nor were they instructed to use it. After this training phase a nonword-picture matching posttest was used to assess learning of nonword meaning, and a spelling posttest was used to assess learning of nonword orthography. Children showed robust learning for novel spelling patterns after incidental exposure to orthography. Further, we observed stronger learning for nonword-referent pairings trained with orthography. The degree of orthographic facilitation observed in posttests was related to children's reading levels, with more advanced readers showing more benefit from the presence of orthography

An examination of business occupier relocation decision making : distinguishing small and large firm behaviour

This paper explores how business occupiers decide whether and where to relocate. It captures the experience and behaviour of a range of sizes and types of business occupier and subjects their decision-making processes to detailed scrutiny. A linear three-stage decision model is used to sequence and structure interviews with individuals who have intimate involvement with the relocation of 28 firms and organizations in Tyne and Wear, in the north-east of England. The 'constant comparative' method is used to analyse the interview data, from which emerges 18 key concepts, comprising 51 characteristic components. Using an axial approach, these are organized into 10 cross-cutting themes that represent the main areas of consideration or influence on the thinking of the people involved in determining whether a firm or organization should relocate and, if so, where to. The resulting analysis finds that organizations adopt varying degrees of sophistication when making relocation decisions; small firms are more inclined to make decisions based on constrained information; larger organizations adopt a more complex approach. Regardless of firm size, key individuals exert considerable influence over the decision-making process and its outcome

Developmental changes associated with cross-language similarity in bilingual children

Online publication 30/9/2015The main goal of the present study was to investigate how the degree of orthographic overlap between translation equivalents influences bilingual word recognition processes at different stages of reading development. Spanish–Basque bilingual children with ages ranging from 8 to 15 years were tested in an explicit translation recognition task with a large set of items. Critically, the degree of cross-language similarity (i.e. the cognate status) between the references and the correct targets was manipulated along a continuum in order to investigate how the reliance on crosslanguage orthographic overlap varies as a function of reading experience. Results showed that younger children were significantly more sensitive to the cognate status of words than older children while recognising translation equivalents, and that this difference did not depend on the speed of response of the participants. These results demonstrate that the influence of cross-language similarity progressively diminishes as a function of increased exposure to print together with the maturation of the mechanisms responsible for language interference suppression, as suggested by developmental models of bilingual lexical access.This research has been partially funded by the Spanish Government [grant number PSI2012-32123], the European Research Council [grant number ERC-AdG-295362], and by the AThEME project funded by the European Union [grant number 613465]