Search

Mobility can involve many barriers that make it challenging for individuals with disabilities to travel. When it is a child who has a disability, the whole family's mobility practices can be affected by those barriers since families' mobilities are often intertwined. This paper is based on time-use diaries and interviews with parents of wheelchair-using children living in Sweden. A time-geographical framework is used in the paper, especially focusing on the concept of coupling constraints, which can emerge when individuals need to be together to perform an activity, such as mobility. The main focus is on how coupling constraints between parents and the disabled child affect mobilities, but the findings show that couplings also exist with authorities and things and these can increase coupling constraints within the family. However, if being eligible for personal assistance and special transport service the coupling constraints within the family can decrease, indicating that such support systems are fundamental for these families' mobilities. This paper also shows that time geography can be useful for disability studies and add new dimensions to the relational perspective on disability. [ABSTRACT FROM AUTHOR]

Various measures to mitigate the spread of COVID-19 have altered mobility flows worldwide and caused people to adopt new ways of being and moving in public space. These changes have been considerably pronounced across modes of public transportation. This paper explores the experiences of individuals who continued riding and working in public transport throughout the pandemic to yield insight into changing mobility meanings and grounded realities of urban mobility processes in the context of COVID-19 and beyond. Through the combined analysis of ethnographic fieldwork, participant observations and interviews, the paper unpacks lived experiences of riding and working in public transport in the city of Amsterdam during lockdown by addressing the changed nature of embodied encounters and mobile sociability in public transit. Findings denote that COVID-19 has altered the conditions of mobile sociability in spaces of public transport, and has produced complex experiences of daily travel with others involving mutually negative and positive impressions. As a result, we argue that when challenged by COVID-19 related restrictions, mobile sociability and fleeting encounters on the move significantly shape the experience of traveling with others in ways that call into question how we think of public transport as a social space in cities. [ABSTRACT FROM AUTHOR]

This article delves into the everyday dynamics of colonial rule to outline a novel way of understanding colonized–colonizer interactions. It conceives colonial management as a social field in which both the colonized and colonizers negotiate and exchange resources, despite their decidedly unequal positions within a racial hierarchy. Drawing their example from the West Bank, the authors argue that a Palestinian economic elite has proactively participated in the co-production of the colonial management of spatial mobility, a central component of Israeli colonial rule. The study employs interviews and document analysis to investigate how the nexus between Palestine's commercial-logistical needs and Israel's security complex induced large-scale Palestinian producers to exert agency and reorder commercial mobility. The authors describe and explain the evolution of a 'Door-to-Door' logistical arrangement, in which large-scale Palestinian traders participate in extending Israeli's system of spatial control in exchange for facilitating logistical mobility. This horizontal social encounter that entails pay-offs is conditioned, but not fully determined, by vertical relations of domination and subordination. [ABSTRACT FROM AUTHOR]

Using the case of the mobile preschool we focus on how children's prosthetic citizenship is constructed in relation to notions of mobility and place in the accounts of Swedish mobile preschool professionals. Mobile preschools are preschools in buses that visit different places in and around the city on an everyday basis. Analysis of interviews and workshop discussions with mobile preschool professionals shows how three different conceptualisations of children's 'proper' citizenship operate in parallel in these accounts – children as 'not-yet-citizens', children as 'not-here-citizens' and children as 'here-and-now-citizens'. These different conceptualisations are constructed in relation to the everyday mobility of the mobile preschool and notions of places as more or less beneficial for children's proper future and Swedish citizenship, and reveal how mobility is not only a consequence of citizenship relations but also constitutive of them. This paper contributes to knowledge on how mobility and notions of place constitute ideas on citizenship, and how forms and geographies of mobility produce subjects as more or less citizen. [ABSTRACT FROM AUTHOR]

Copyright of ANUARI d' Arquitectura i Societat is the property of Universidad Politecnica de Valencia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Anales de Geografía de la Universidad Complutense is the property of Universidad Complutense de Madrid and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

[...] Leaving that house was really emotional ... because it's the ... that's the thing it's the boys' childhood and Grace's childhood all wrapped up in that house. Keywords: Material culture; mobility; anchor; home; moving house; storage; Cultura material; movilidad; ancla; hogar; mudanza; almacenamiento; Culture matérielle; mobilité; attache; foyer; déménagement; entreposage EN Material culture mobility anchor home moving house storage ES Cultura material movilidad ancla hogar mudanza almacenamiento FR Culture matérielle mobilité attache foyer déménagement entreposage 990 1006 17 09/09/22 20220901 NES 220901 Introduction Moving home is a significant moment experienced by most over the course of their life, and the practices of sorting through and packing household possessions in order to move and remake home are central to the experience. Gill's experience of moving house involved the stress of renovating their new house and was inflected by her changing family dynamics as her children grew up and the "family home" changed its meaning. Mobility, anchor, home, moving house, Material culture, storage. [Extracted from the article]

Copyright of Ethnologie Française is the property of Presses Universitaires de France and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Ethnologie Française is the property of Presses Universitaires de France and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revue des Sciences de l'Education is the property of Revue des Sciences de l'Education and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Research on mental health geographies and housing has focused on pattern and distribution, rather than social and cultural constructions of home. Here we attempt to understand meanings and roles of home for individuals with mental illness in the UK within the context of a deep-seated housing crisis. The discussion is sharpened by the notion of the ambiguous home, ranging from a place for retreat, separation or even isolation from the world, with experiences of recovery, stability or wellness, to home as something more negative, in which distress or illness flourished, and in which people became entrapped or from which they sought relief. Three themes crosscut this range of experiences: home as material object; home as relational; and home as rhythm. [ABSTRACT FROM AUTHOR]

Copyright of Sociologia, Problemas e Práticas is the property of Centro de Investigacao e Estudos de Sociologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This study critically examines how development interventions are imagined for singular places and subjects through a political process of product scripting that reconfigures the socio-technical meaning of second-hand objects from unwanted commodities to solutions that are appropriate for sub-Saharan Africa. Tracing the flow of second-hand goods demonstrates how development subjects are imagined to be adult, economically productive, rural beings. The paper finds that the second-hand mountain bicycle is inserted into an imagined place with a predetermined purpose that does not attend to alternative and heterogeneous urban and rural identities and needs. The paper highlights the compromises undertaken in designing development interventions as they are entangled with processes of waste recycling, commodification and philanthropy. [ABSTRACT FROM AUTHOR]

Copyright of Management international / International Management / Gestiòn Internacional is the property of Management International and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This article examines the narratives of two Venezuelan migrants who have engaged in multi-stage migration practices in order to optimise their long-term living options in Australia. I show how they deploy a range of tactics to negotiate risk and uncertainty under the spatial, temporal and institutional conditions of temporary migration programs by moving to regional areas, drawing on friendship networks and continuously responding to shifting immigration policy. I argue that time spent on temporary visas is actively and intentionally used by migrants in order to create future migration possibilities and security for themselves in contexts where migration outcomes can be unpredictable. As temporary migrants they are subject to policies designed to meet the needs of global capital and skills shortages but they are also reasoning individuals who tactically pursue opportunities, put down roots and continually evaluate and readjust their plans and fall back positions, even within a relatively limited range of choices. [ABSTRACT FROM AUTHOR]

Copyright of Anales de Geografía de la Universidad Complutense is the property of Universidad Complutense de Madrid and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Unjustified parking in parking spaces reserved for disabled people is a social phenomenon that reflects characteristics and attitudes concerning solidarity, morality, social norms and values. Disabled people's entitlement to specific parking spaces stems from the general right to mobility, independence, self-realisation and autonomy. In research conducted in the capital city of Slovenia, observers monitored 72 parking spaces reserved for disabled people (on-street spaces, in shopping and health centres). Among all uses of these spaces 63.1% were violations, although in some locations this share exceeded 90%, and 29.3% of violations occurred while at least one unoccupied non-reserved space was available in the near vicinity. The violators parked their vehicles for a short time, with half remaining in or close to the car. Formal social control is closely connected with the domination of an organic type of solidarity. Yet, this research shows it has clear limitations. In just 12 hours of observing reserved parking spaces, the researchers managed to note down the equivalent of 38.5% of the total violations processed annually by municipal wardens. Although the research focuses on one specific issue of solidarity, its implications resound beyond this particular case and suggest broader societal reasons for changes in solidarity. [ABSTRACT FROM AUTHOR]

Recent socio-political situations in the Middle East and elsewhere have resulted in a large number of refugees searching for new places to settle. To understand how a new place could become a home, the authors conducted qualitative research in the Netherlands. The study looked at the home experiences and (micro)homemaking practices of young Syrian refugees in an innovative housing project in Amsterdam. In this project, Dutch and Syrian young adults are housed together to foster integration. This article also looks at Boccagni's model for understanding immigrant live-in workers' homes. The authors further develop the model by introducing a mobility lens, which offers the possibility of elaborating on theoretical notions between now-and-then and here-and-there and the empirical findings derived from this study. [ABSTRACT FROM AUTHOR]

The banality of movement and the fascination with mobility meet at the very locations of arrival and departure. This contribution highlights social practices within and discourses about train stations which are interpreted as constitutive moments in the production of gender, sexuality and space. Train stations host the crossing between different spatial and social contexts, the negotiation of scales and between life cycles. Focusing on the historical moment of the early twentieth century we look at Swiss train stations as sites of heightened public concern which served to implement regulatory instruments to govern the social order of modernity. Narratives of the city as danger delineated train stations as critical turning points in the life-journey of young people, particularly for 'impressionable' young women. What is of interest here is how sexualities are discursively and metaphorically constructed and governed by social purity groups within the train station at the turn of the century. The way in which Station Assistance agents 'received', counselled and controlled the arrival of young people in the cities contributed to reiterating and (re)constructing gender and sexuality beyond national boundaries. The resulting protective and prescriptive constructions of sexuality reveal much about the complex perceptions and regulations of rural and urban sexualities and gender systems in their spatial nexus. [ABSTRACT FROM AUTHOR]

In the last few decades, the discovery of large ditched enclosures in Iberia has revealed the diversity and complexity of deposition and manipulation of human bone remains. Alongside traditional ritual burials (mainly megalithic tombs and hypogea), fragmented and scattered human bones mixed with other kinds of material culture began to appear in many features. This is the case for Ditch 5 at Marroquíes, which offers an excellent opportunity to explore this ritual behaviour. Based on a multi-proxy approach, three main conclusions can be drawn: 1) the skeletal elements present show deliberate selection of particular categories of bones; 2) depositional episodes included the remains of people who died at different points in time and were subject to different taphonomic processes, and 3) mobility patterns indicate that all individuals, with one possible exception, were local. The movement and manipulations of body parts may reflect the active role of people after death as social and symbolic elements that retain agency and capacity for action. [ABSTRACT FROM AUTHOR]

Recent debates in social and cultural geography on the inclusionary/exclusionary nature of space have brought our attention to the 'everywhere different' nature of racism across cities. Among these debates have been calls to interrogate the socio-spatial dimensions of new forms of racism, like Islamophobia as they evolve. This paper draws on the findings of an online survey conducted from September 2016 to April 2017 with young Muslim American residents of the Bay Area, California. It provides empirical material on the way young Muslims map 'the geography of Islamophobia' across this region to uncover how the racialization of Muslims has translated into perceptions of racism across city spaces. The findings indicate that Islamophobia occurs in various public spheres, particularly on public transport and in airports. There is a spatial concentration of Islamophobic spaces in the Bay Area, focussed in the North and Outer-East Bay regions – relatively rural parts of the region with a less significant Muslim population. Conversely, areas with larger Muslim populations were associated with lower levels of perceived Islamophobia. This paper highlights the need for more localised, socio-spatial engagements in racism that capture the evolving nature of the American racisms, and how they are spatialised across cities. [ABSTRACT FROM AUTHOR]

Copyright of Langage & Societe is the property of Fondation Maison des Sciences de l'Homme and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Studies of rural areas have necessarily been occupied by discussions of migration, the experience of which is often concentrated among young adults in the years immediately following the end of secondary education. This dynamic has been attributed to a mobility imperative that equates leaving rural areas for the opportunities offered by urban centres with success, and staying in rural areas with failure. This article interrogates the distinction between those who leave rural areas and those who stay, drawing on life-course research that contextualises the post-secondary mobility imperative within individuals' wider biographies in order to challenge claims that mobility is associated with the development of personal resources that lie outside the reach of those who are not mobile. The article presents data taken from a 20-year longitudinal panel study of individuals' post-school pathways, drawing specifically on interviews conducted with participants who grew up in rural areas. By focusing on the significance of relational considerations, the authors contend that the mobility decision-making process results in the development of reflexivity about one's mobility irrespective of its outcome. [ABSTRACT FROM AUTHOR]

This article explores how senses of belonging, place, and mobility are linked to each other in the context of rapid socio-political change and human mobility. Using the sociological concept of place-belongingness, the article examines narratives of belonging among young people from Crimea who moved to Moscow to pursue higher education in the two years following Russia's 2014 annexation of the peninsula. Drawing on 38 biographical interviews conducted in Moscow with young people from Crimea, the article demonstrates how 'movements of borders across people' (to build on Rogers Brubaker's expression) result in a non-binary construction of belonging across places, based on the access an individual has to constellations of resources different places offer. The analysis shows that narratives of belonging among young people from Crimea revolve around resource categories that include economic resources, emotional resources, resources that reconcile multiple identities, and ontological security resources. This study moves beyond analysis of identities as linked to nation-building in the post-Soviet space, focusing on categories of 'place' emerging from the perspectives of study participants. [ABSTRACT FROM AUTHOR]

Everyday experiences of movement have become a central concern for social and cultural geography in recent years. Work here has begun to unpack the specific meanings, imaginaries and experiences that come to be bound up with mobile bodies and their practices. However, it has been suggested that more could be done to examine the material, elementary, molecular and physical aspects of movement which are significant to the experience of being on the move. Therefore, this paper explores the experience of cycling amid such turbulent 'elemental' materialities. Such 'matters' matter to cycling in the way that they (re)make both mobile environments and mobile subjectivities. Cyclists come to have quite immediate and intimate relationships with the material and 'elementary' aspects of the environments they move through given their relatively unmediated encounters with them. This paper draws on video-interview based research with 24 commuter cyclists in Plymouth, UK to consider cyclists' experience of atmospheric conditions in terms of air's force and air quality. From this, the paper reflects on how the experience of such 'elemental' matters might be significant to future research on and planning for cycling. [ABSTRACT FROM AUTHOR]

Recent years have seen the Israeli state investing considerable efforts in the alleviation of unprecedentedly high inter-regional inequalities. Improved transportation networks intended to better connect peripheral residents to centrally located opportunities have been at the heart of this policy known as 'periphery cancellation'. In this article, we study strategies deployed by young peripherals as they engage with the statist call for enhanced mobility between regions. Drawing on qualitative research conducted at 'A Center for the Young' in a small town in the predominantly rural Upper Galilee, we examine the extent to which young adults negotiate the recent state-led mobility turn. Taking a critical nobilities approach, we argue that statist aspirations of mobilizing peripherals to central hubs collide with socio-spatial constraints faced by many young residents. The official call for mobility is frequently met by a sense of spatial (im)mobility articulated by young agents who deploy instead alternative strategies to achieve socio-spatial mobility. Termed refusal, circulation, and refuge, these strategies draw on notions of peripheral stagnation, attributed to both state policies that have long marginalized the area as well as rooted conventions about the social and cultural inertia of peripheral residents. These strategies, we contend, widen existing inequalities between central haves and peripheral have nots while solidifying a sense of socio-spatial disenfranchisement among many of its young inhabitants. [ABSTRACT FROM AUTHOR]

Copyright of Cadernos de Pesquisa is the property of Fundacao Carlos Chagas and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This paper brings a new perspective to music geography by focusing on how a particular mainstream musician helped to construct, subvert, and circulate meanings associated with travel. It asserts that Frank Sinatra, via his music and actions, engaged with travel in ways that frequently ran counter to how it has commonly been enacted in American music and popular culture. Particular attention is paid to the singer's travel-themed album, Come Fly With Me. By the time of its release in 1958, Sinatra, via a public persona that encompassed performer, 'playboy' and businessman, was a central figure in promoting an alignment of leisured mobility with postwar economic success. The paper interrogates how Sinatra's celebrity allowed him to embody travel in certain real and imagined ways. It also examines what the resulting representations revealed about performances of gender, ethnicity, and status, and the expected modes of behavior that were associated with them, in America's postwar consumer-driven society. [ABSTRACT FROM AUTHOR]

This article analyses how people in Guliston, southern Tajikistan, conceive of 'waiting' both for labour-migrants to return from Russia, and to realise the projects that these migrants and their families envision. In Guliston people talk about two contradictory forms of waiting: on the one hand, they associate waiting with sitting and doing nothing; on the other, they equally emphasise the active roles they play to keep their village full of vitality while they wait for their migrant-relatives to return. Stressing the interdependencies between temporality and mobility, and the experiences of time and place by those who stay in their villages and those who migrate, this article argues that people in Guliston practise 'waiting' as active and creative processes that figure prominently in their production of specific forms of sociality and community, and their village as a dynamic place at the centre of a circulation of caregiving. [ABSTRACT FROM AUTHOR]

Tehran's subway, the most affordable means of public transportation in the city, offers a useful context to study the relationship between women's spatial mobility, the construction of self, and social production of space. This study focuses on Line 1 of Tehran's subway that connects Tehran's Bala Shahr (Northern Tehran) and Paeen Shahr (Southern Tehran) neighborhoods. This study draws upon 46 semi-structured interviews with women who were using subway Line 1 in the fall and winter of 2012. The average hour-long interviews examine how women's emotional states as well as their perceptions of self and space vary as they traverse the city on Line 1. Representing a cultural as well as a spatial transect through the city, the perceptions of women on subway's Line 1 convey the repudiation of the state's attempt to promote a singular Muslim female identity. The findings suggest that similar to women's perception of space, their gendered identities are constantly changing through the enhanced mobility that is facilitated by Tehran's subway system. In contrast to what is presumed in the West, with a simple change in their hijab style or make-up, Iranian women innovatively negotiate contrasting spaces. [ABSTRACT FROM AUTHOR]

Copyright of Anales de Geografía de la Universidad Complutense is the property of Universidad Complutense de Madrid and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Youth research recognises that the struggles typical of the transition to adulthood can no longer be assumed to occur ‘at home’. However, few investigations have focused on how the imagination of mobility shapes that which is not home yet but which may later become so. To address this lacuna, this article engages with how the imagination of the future of young people is entrenched with ‘motility’, namely, the possibility for a type of movement that arises out of a specific relationship with one’s current context. Focusing on Sardinian youth, the article problematises the strong mobility orientation which can occur through the unfolding of an imagined continuous ‘lived’ relationship with Sardinia. The author calls this ‘rooted mobility’. The article discusses the limits that accompany such mobility, and the potential for social action that emerges, framing narratives of the future within the conditions of peripherality in which young Sardinians live. The article draws on 341 essays on the topic of the future collected from students in their penultimate year of school. [ABSTRACT FROM AUTHOR]

Taking the recent debate on austerity as a starting point, this paper discusses contradictions in current processes of neoliberalisation using the marketisation of elderly care in Switzerland as an example. Just as in other countries, an austerity rationality in public spending and the neoliberal restructuring of public health services paved the way for the emergence of private suppliers of 24 hours home care. These new agencies hire migrant women from Eastern European countries and sell packaged care services to the elderly. In so doing, they play a key role in reconfiguring care according to a market logic. They shape the working conditions of live-in migrant care workers and the definition of care itself as a marketable good. In our paper, we analyse the strategies of these new corporate intermediaries based on a market analysis and on interviews with their representatives. We argue that the marketisation of elderly care in Switzerland is illustrative of today's neoliberalism in that it combines progressive and regressive aspects and owes its emergence to its ambiguous entanglement with many other discourses. The paper illustrates how the transformation of the home into a new space of commercialised care relies on the production and economic valorisation of social and mobility differentials. [ABSTRACT FROM AUTHOR]

In the global south where care services are sparse and familial care remains practically and socially important, end of life care often occurs within families. Furthermore, in health care related policy development, care is often assumed to be ensured by ‘traditional’ norms of extended family relationships. In this context, the demands of providing care may require care providers to relocate, as well as reorganize their everyday responsibilities. This article contributes to geographies of care by offering an examination of the mobility constraints experienced by married and externally-resident daughters seeking to provide end of life care to a parent in northern Ghana. Drawing on ethnographic research, I examine how particular familial relationships are embedded with socially constructed labour obligations, leading to conflicting responsibilities at a parent’s end of life. I then consider how a woman as a daughter works to overcome these constraints to provide end of life care. I conclude that understanding the mobility of care providers can contribute to avoiding potentially damaging assumptions of ‘traditional’ norms of care and is an important consideration towards understanding the geographies of care in the rural global south. [ABSTRACT FROM PUBLISHER]

The uniqueness of this article is that it deals withlong-distance bike commuting in pro-cycling Copenhagen and its environs. Informed by practice theory and sensuous studies of urban and sport practices, I discuss the ‘things and environments’, ‘meanings’ and ‘competences and biological bodies’ that typify long-distance commuter cycling. This article develops cycling literature and the ‘mobilities paradigm’ in the following ways: by outlining a practice approach to cycling; challenging the idea that commuter cycling is only for short distances; undermining the distinction between utility and sport cycling; and lastly by connecting the ‘mobilities paradigm’ with literature on active travel and sport studies. [ABSTRACT FROM PUBLISHER]

Copyright of Boletin de Antropologia is the property of Universidad de Antioquia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)