Migration and the Rural-Urban Continuum: Evidence from Bukidnon, Philippines

This paper explores the heterogeneity of the migrant experience using the Bukidnon Panel Survey, which follows up 448 families in rural Mindanao who were first interviewed in 1984-85, as well as their offspring. Migration patterns are examined using the full listing of children of the original respondents as well as a special survey including 257 of the migrant offspring who were tracked down and interviewed in 2004. The migrant survey focuses on differences in the migration experience of males and females who migrated to rural, poblacion, and urban areas. The study finds that rural areas, poblaciones, and urban areas systematically attract different types of migrants. It also finds that the most important determinants of an individual`s location decision are life-cycle effects, specifically marriage and educational attainment.migration, Bukidnon, migration decision, migration pattern

Dynamin as a Mover and Pincher during Cell Migration and Invasion

The large GTPase dynamin, long known for its role in endocytosis, has most recently been implicated as a facilitator of cell migration and invasion. Recent observations link dynamin to the cycle of membrane expansion and retraction essential for cell motility. Its role in actin polymerization, membrane deformation and vesiculation, and focal adhesion dynamics are all important for this process, and the new findings provide exciting directions for studies of this ubiquitous and diverse protein family

Migration and the Rural-Urban Continuum: Evidence from Bukidnon, Philippines

This paper explores the heterogeneity of the migrant experience using the Bukidnon Panel Survey, which follows up 448 families in rural Mindanao who were first interviewed in 1984-85, as well as their offspring. Migration patterns are examined using the full listing of children of the original respondents as well as a special survey including 257 of the migrant offspring who were tracked down and interviewed in 2004. The migrant survey focuses on differences in the migration experience of males and females who migrated to rural, poblacion, and urban areas. The study finds that rural areas, poblaciones, and urban areas systematically attract different types of migrants. It also finds that the most important determinants of an individual`s location decision are life-cycle effects, specifically marriage and educational attainment.migration, Bukidnon, migration decision, migration pattern

Migration and the rural-urban continuum: Evidence from the Rural Philippines

This paper explores the diversity of the experience of migrants to rural, peri–urban, and urban areas using a unique longitudinal data set from the Philippines. In 2003 and 2004, the Bukidnon Panel Study followed up with 448 families in rural Mindanao who were previously interviewed in 1984/85 by the International Food Policy Research Institute and the Research Institute for Mindanao Culture, Xavier University, and surveyed both a sample of their offspring living in the same area as well as a sample of those who had moved away to different locations. Parents (original respondents) and children who formed separate households in the same locality were interviewed in 2003; original respondents' offspring that migrated to different rural and urban areas were interviewed in 2004. Thus, migration patterns were examined using the full listing of children of the original respondents as well as a special survey of 257 of their migrant offspring who were tracked down in 2004. This migrant survey focused on differences in the migration experience of males and females who moved to other rural areas, poblaciones (the administrative seats of municipalities or towns), and urban areas. We follow this with an examination of the determinants of children's location, using the sample of all children. In addition to migration to rural, peri–urban, and urban destinations, we explicitly consider the case where the individual leaves his or her parental residence, but remains in the same village, as a locational choice." from Authors' Abstract

Analysis of memory use for improved design and compile-time allocation of local memory

Trace analysis techniques are used to study memory referencing behavior for the purpose of designing local memories and determining how to allocate them for data and instructions. In an attempt to assess the inherent behavior of the source code, the trace analysis system described here reduced the effects of the compiler and host architecture on the trace by using a technical called flattening. The variables in the trace, their associated single-assignment values, and references are histogrammed on the basis of various parameters describing memory referencing behavior. Bounds are developed specifying the amount of memory space required to store all live values in a particular histogram class. The reduction achieved in main memory traffic by allocating local memory is specified for each class

Shocks, groups, and networks in Bukidnon, Philippines:

"This study examines the role of groups and networks in helping poor Filipinos manage their exposure to risks and cope with shocks. It brings together two strands of literature that examine how social capital affects economic variables and investigate the processes by which social capital formation, participation in networks and groups, and trusting behavior comes about. Using a longitudinal study from a province in Northern Mindanao, Philippines, the authors find that households belong to a number of formal and informal groups and networks, but participation differs according to household characteristics. Households belonging to the lower asset quartiles belong to fewer groups, and households with more human and physical capital have larger social networks. Furthermore, wealthier households are more likely to take part in productive groups while membership in civic and religious groups is not limited by economic status. Migrant networks play an important risk-smoothing role via remittances sent by migrant daughters." authors' abstractSocial networks, Groups, Social capital, Poverty, Participation, Gender,

Bulk Water Exports: Environmental Concerns and Business Realities

Hydrologists expect the demand for water will continue to increase with the world’s growing population. As a result, some have predicted that by the year 2025, as many as 3.5 billion people will be living in water stressed or water scarce countries, compared to 500 million people in 2002. Water scarcity is also exacerbated as peoples’ lifestyles become more industrialized and thus more consumptive on a per capita basis. The aim of this paper is to concentrate on one aspect of the complex issue of water exports, namely, the feasibility and practicality of a water export business and its various impacts. The issue of water exports will be put in perspective, because if such exports are not attractive from a business point of view, it is unlikely that such exports will ever take place. The term water exports will be used in this paper to refer to bulk transfers of water from one location to another using tankers or water bags. This kind of transfer is generally considered a type of medium scale export, as opposed to sales of bottled water (small scale) and watershed diversions (large-scale)

(Re)collections: Engaging Feminist Geography with Embodied and Relational Experiences of Pregnancy Losses

With empirically-grounded and theoretically-inferred consideration in this thesis, I bring into focus a vast ‘collection’ of components entailed in lived experiences of pregnancy losses and, in particular, foreground the ways in which spaces and places are intimately involved. This includes, for example, attending to medical settings such as hospitals, workplaces, homes and gardens, online support communities, cemeteries and other memorial locations in addition to bodies which are simultaneously material and emotional. Since pregnancy losses are inter-personal, I also discuss social relations between women, their embryos, foetuses, babies and/or children, medical staff, partners, family members, friends, work colleagues, online group users and ‘wider society’. The multiplicity of components within, and across, participants’ experiences serves to simultaneously break apart and reassemble the label I selected for the research of ‘pregnancy losses’. I utilise several sub-disciplines across the thesis, finding a particularly significant and tricky tension between two particular areas I wish to engage: feminist geographies and the geographies of death and dying. My research weaves together feminist, embodied, emotional geographies through which I seek to understand experiences of pregnancy losses. In doing so, I foreground the richness, depth and complexity of lived experiences by developing understandings of pregnancy losses which embrace, rather than sanitise or marginalise, bodily materiality and social relations as well as emotional dynamics. My thesis serves to bring together and explore the recollections of pregnancy loss experiences, organised around a number of spatial contexts and activities. These are reflected in the focus of each chapter in terms of interior bodies, social relations, bodily fluids, online sites, external skins and practices of memorialisation. My discussions work to ‘collect’ together understandings about the somewhat paradoxical fullness and variety of accumulated meanings that can be held about pregnancy loss experiences

The evolution of pre-zygotic reproductive isolation

Pre-zygotic barriers to interbreeding have received an increasing amount o f attention during the past several decades. Emergent areas of interest include how novel sexual communication systems evolve, and intersexual conflict between sperm and the female reproductive tract. Here, I show for the first time that natural genetic variation between Drosophila simulans and D. mauritiana at a single genomic region can induce both species-specific female choosiness and the male trait they are discriminating against. Additionally, there were two separate regions of the genome that were individually capable o f inducing this trait/preference combination, suggesting that trait/preference linkage may be widespread. In another study, I found that males ofPeromyscus may be using sperm cooperation as an adaptation to obtain fertilizations. In addition, I observed that in Peromyscus maniculatus, where females mate multiply, the females have longer oviducts than in the monogamous P. polionotus. The longer oviducts may sexually select for more compatible (e.g. conspecific) sperm through cryptic female choice