Impact of different sea surface roughness on surface gravity waves using a coupled atmosphere–wave model: a case of Hurricane Isaac (2012)

Ocean Dynamics - The complicated pattern of the chaotic ocean surface depends strongly on the interaction between wind and waves. An accurate representation of momentum and energy exchange at...     

Where women fear to tread: Images of danger and the effects of fear of crime in Singapore

This paper examines women's perceptions of fear and their consequent impact on women's experience and use of public space in Singapore. It argues that even in a city ranked as one of the safest in the world, women experience greater levels of fear of crime and that this fear is qualitatively different from men's as it is largely centred on a fear of rape. It identifies the various sources of fear information which play a part in the construction of images of danger, including personal victimisation experiences, socialisation, the mass media and interpersonal communication. It argues that fear is place- and time-specific and that women's feelings of personal vulnerability is manifested within an environmental context. In examining the consequences of fear on women's lives, the study concludes that risk management behaviour was more prevalent than avoidance tactics. It argues that while many restrictions appear self-imposed by women themselves, the fear of crime in public places ultimately contributes to the perpetuation of what has been termed a spatial expression of patriarchy.     

Indoor Air Background Levels of Volatile Organic Compounds and Air-Phase Petroleum Hydrocarbons in Office Buildings and Schools

A background indoor air study has been completed which includes the collection of indoor air samples from office buildings and schools. The anonymous study was designed with input from the U.S. Environmental Protection Agency and the Massachusetts Department of Environmental Protection. The sampling was implemented in 2013, 2014, and 2015 and included the collection of 25 school building samples and 61 office building samples. The study generated 14,668 new indoor air background data points, with samples collected from buildings located in 26 cities in 18 states, including Arizona, California, Connecticut, Indiana, Kansas, Maine, Massachusetts, Minnesota, Montana, New Hampshire, New Jersey, New York, Nevada, North Carolina, Ohio, Texas, Utah, and Washington. Indoor air background concentrations of target compound volatile organic compounds (VOCs) ranged from less than the laboratory method reporting limit of 0.044 μg/m³ to concentrations up to 1190 μg/m³, with hydrocarbon ranges from less than the reporting method limit of 10 μg/m³ to concentrations up to 3000 μg/m³. Some VOCs were identified ubiquitously in indoor air background, and some were identified at concentrations which exceeded risk-based regulatory screening levels. These study results provide useful and updated information on indoor air background and air quality in offices and schools and can be used in future regulatory guidance update considerations, for further examination of relationships between these data and residential study data, in human health risk assessments and risk communication, and in planning future studies.     

DISCRIMINANT PRINCIPAL COMPONENTS ANALYSIS

When the number of variables exceeds the number of samples, one method of multivariate discriminationis to use principal components analysis to reduce the dimensionality and then to perform canonicalvariates analysis (PC-CVA). This paper proposes an alternative approach in which discriminant analysisis carried out by a weighted principal component analysis of the group means (DPCA). This method doesnot require prior data reduction and produces discriminant factors that are orthogonal in the original dataspace. The theory and performance of the two methods are compared. Although the individual factors ofDPCA are found to be less discriminating than PC-CVA, the overall discrimination, calculated bymultivariate analysis of variance, and the predictive value, estimated by the leaving-one-out error rate,are broadly comparable.     

Transnational labour migration and the politics of care in the Southeast Asian family

Recent increases in female labour migration in and from Asia have triggered a surge of interest in how the absence of the mother and wife for extended periods of time affects the left-behind family, particularly children, in labour-sending countries. While migration studies in the region have shown that the extended family, especially female relatives, is often called on for support in childcare during the mother’s absence it is not yet clear how childcare arrangements are made. Drawing on in-depth interviews with non-parent carers of left-behind children in Indonesia and Vietnam, the paper aims to unveil complexities and nuances around care in the context of transnational labour migration. In so doing it draws attention to the enduring influence of social norms on the organisation of family life when women are increasingly drawn into the global labour market. By contrasting a predominantly patrilineal East Asian family structure in Vietnam with what is often understood as a bilateral South-East Asian family structure in Indonesia, the paper seeks to provide interesting comparative insights into the adaptive strategies that the transnational family pursues in order to cope with the reproductive vacuum left behind by the migrant mother.     

Gendering transnational communities: a comparison of Singaporean and British migrants in China

Studies of transnational communities and transnational labour migration have focused almost exclusively on the movement of low-skilled and unskilled workers across international boundaries. While these groups may be numerically dominant, it must be recognised that there are increasing numbers of managers and professionals engaged in work-related migration in association with the intensification of economic globalisation processes. Work which has been conducted on highly skilled migrants has largely been limited to examinations of intra-firm mobility and the workspace. This approach fails to consider the ways in which the migrants' experiences are embedded in the social, economic and political practices of the host country, but also in a specific household context. It is unsurprising, therefore, that the gendered dimensions of the life of these migrants and their accompanying family members has been somewhat under-researched.Flows of expatriates can lead to the constitution of both ‘communities of transnationals', as particular cities become foci of the activities of the ‘transnational capitalist class', as well as ‘transnational communities' which involve regular and sustained contact between individuals across national boundaries. In this paper we examine these social formations using two groups of migrants––British and Singaporean migrants to China (both mainland China and the Hong Kong SAR). We focus on the gender characteristics of these groupings, but also the gender division of labour in the creation and maintenance of these ‘communities'. The paper is based on qualitative research carried out in China, Singapore and the UK 1997–2001.     

Navigating the terrains of transnational education: Children of Chinese ‘study mothers’ in Singapore

This paper demonstrates the value of child-centred migration studies which highlight children’s role in shaping the migration journeys of their families, as well as their own projected journeyings. It examines the case of children from China who move to Singapore, an aspiring global education hub, expressly for the purpose of an overseas education that will facilitate longer-term migration and life goals. Focus is given specifically to the children of ‘study mothers’ or peidu mama (literally: ‘mothers accompanying their children who are studying’). Through interviews with the teenagers and the conceptual optic of ‘social navigation’, our paper demonstrates that children are resilient and creative beings able to navigate the twists and turns of their immediate trajectories, as well as develop their own goals and projected destinations for their futures. The paper calls for a refinement in the way we understand children’s mobilities. First, in arguing that their spatial journeying across the terrains of transnational education cannot be decoupled from their process of social becoming and emotional development from passive followers to active negotiators, we wish to disrupt hegemonic discourses and dominant representations of children in migration as simply ‘migrant’s children’ and restore them to the status of ‘migrant children’. Second, adopting the concept of social navigation as an analytical lens allows us to highlight the fluid ways that young people think about their futures and the different pathways by which they can get there. This leads us to conceive of social and cultural capital accumulation through transnational education as a process with many more degrees of provisionality than what is often presented in the literature as a ‘strategic project’ with a fixed and abstract goal.