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1.
Childhood, though it is understood cross-culturally in very different ways, always has a distinctive temporal framework, since children's growth and development cannot be undone. Yet, in many contexts, the times of childhood have become discordant with the rhythms, timescales, and temporal controls of migration. Focusing on the children of Indonesian and Filipino migrants in Sabah, Malaysia, this article explores the contemporary clash between the temporalities of migration and childhood. Children face separations and ruptures in shared time due to Malaysia's migration regime, and experience the temporariness of migrant life differently to their parents. Educational exclusion leads to temporal discontinuities between Malaysian-citizen and migrant childhoods, and racialized understandings of national time emphasize the negative potentiality of migrants’ children. Overall, the article argues for the importance of considering the interaction between the temporal conflicts of capitalism and forms of natural time such as childhood.  相似文献   

2.
To investigate perceptual and neural correlates of future self-appraisals as a function of temporal distance, event-related potentials (ERPs) were recorded while participants (11 women, eight men) made judgments about the applicability of trait adjectives to their near future selves (i.e., one month from now) and their distant future selves (i.e., three years from now). Behavioral results indicated people used fewer positive adjectives, more negative adjectives, recalled more specific events coming to mind and felt more psychologically connected to the near future self than the distant future self. Electrophysiological results demonstrated that negative trait adjectives elicited more positive ERP deflections than did positive trait adjectives in the interval between 550 and 800 ms (late positive component) within the near future self condition. However, within the same interval, there were no significant differences between negative and positive traits adjectives in the distant future self condition. The results suggest that negative emotional processing in future self-appraisals is modulated by temporal distance, consistent with predictions of construal level theory.  相似文献   

3.

Like many other cities in Latin America, La Paz, Bolivia, has experienced rapid urbanizationthroughout the past two decades. Aymara-speaking migrants from theLake Titicaca region and across the Altiplano head for this capital in search of economic prosperity, and end up living in the bedroom city of El Alto, perched on the valley rim above La Paz. Once in the city, some migrants maintain strong ties with their rural origins while others disassociate themselves completely from their Aymara heritage. This photo essay explores the process of urbanization and migration among Aymara migrants in El Alto, illustrating how they maintain their rural skills in the urban context in order to survive and adapt to a new life. These photographs address issues such as transportation, employment, family, and ritual, depicting urban life on the edge of the city. Each image illustrates a facet of how Aymara migrants adapt to the urban environment by implementing known practices that they brought with them, or replacing them with newer, urban ones. The accompanying text explains each scene as well as the relationship to the subjects and the anthropological interest inherent in the images.  相似文献   

4.
《应用发育科学》2013,17(2):62-74
To better inform educational policies for Latino students, this study explores the relations between Latino students' conceptions of their futures and their risk status for school dropout. Using the theory of possible selves, the study examines students' hoped-for, expected, and feared selves, the power of those selves to predict risk status for school dropout, and the content of their specificity and ideological beliefs. Four hundred fifteen ninth grade Latino students were surveyed, 30 who also participated in interviews. Results indicated that Latino students' possible selves differed significantly, with hoped-for selves representing the highest levels of educational and occupational attainment. Although hoped-for and expected selves did not predict students' academic performance, feared selves did. The interviews indicated that the specificity and ideological beliefs housed within possible selves might be integral to the mechanisms through which those selves influence academic performance. The implications of the study's findings for school reform policies, specifically those advocating standardized assessments, are discussed.  相似文献   

5.
A partially migratory population consists of non‐migrant and migrant individuals that share a common site during one period of the annual cycle. In this paper, we derive the expected equilibrium population sizes of migrants and non‐migrants and show how the abundance of one type is dependent on the other because their dynamics are coupled through density‐dependent effects. We present an approach for developing hypotheses about how changes in the environment will influence partially migratory populations and for formulating testable predictions about the effects of future changes on the proportions of migrants and non‐migrants. We apply this approach to a hypothesis put forward by Berthold that improved environmental conditions at the shared site will generally increase the number of non‐migrants and decrease the number of migrants, and to a study by Nilsson et al. which observed an increase in the number of migrants in a partially migratory blue tit Cyanistes caeruleus population in Sweden, but an overall maintenance of the proportion of migrants.  相似文献   

6.
Because Filipino Americans are racially categorized as Asians today, many scholars presume that they were automatically included within the provisions of the alien land laws at the time of their legislation. The following article suggests that the racial status of Filipino Americans, during this early period, was much more ambiguous. Instead, most Americans perceived Filipinos in relation to Native and African-Americans. The Alien Land Laws (1913–1952) were, together with anti-miscegenation laws and the Tydings-McDuffie Act, a regime of legal policies that eventually transformed Filipinos into Asians by 1934. Meanwhile, their racial ambiguity provided early Filipino immigrants with significant opportunities to challenge their exclusion in American society, and especially the alien land laws.  相似文献   

7.
Aim  To explore the potential impacts of climatic change on species with different migratory strategies using Sylvia warblers breeding in Europe as a ‘model’ species group. Location  Europe and Africa. Methods  Climate response surfaces and generalized additive models (GAMs) were used to model relationships between species recorded breeding and non‐breeding ranges and recent climate. Species potential future breeding and non‐breeding ranges were simulated for three scenarios of late 21st‐century climate. The simulated potential future and present ranges were compared in terms of their relative extent and overlap, as well as their location. The impact of any shifts in potential range location on migration distance were quantified. Results  Potential breeding ranges consistently showed a shift northwards, whereas potential non‐breeding ranges showed no consistent directional shift, even when trans‐Saharan migrants were considered separately from resident/short‐distance or partial migrants. Future potential range extent relative to simulated recent range extent varied considerably among species, although on average range extent increased. Overlap between future and recent simulated range was generally low, averaging < 36% for both breeding and non‐breeding ranges. Overlap was consistently less for range‐restricted than for widespread species. Migration distance increased generally, by about twice as much in the case of trans‐Saharan migrant species than for short‐distance migrants. In many cases potential future non‐breeding areas were simulated in regions far from the species present non‐breeding area, suggesting that new migration strategies and routes may need to be developed in response to climatic change. Main conclusions  Migratory species can be expected to suffer greater negative impacts from climatic change than species that are resident or undertake only short‐distance or partial migrations. Trans‐Saharan migrants face the greatest potential increases in migration distances, whereas range‐restricted species are expected to experience major population reductions because of the limited, or in some cases lack of, overlap between their present and potential future ranges.  相似文献   

8.
Based on 324 in-depth interviews with Indian, Moroccan, Ukrainian, Bosnian and Filipino migrants based in four EU countries (Austria, Italy, Spain and the UK), our paper explores the relationship between social remittances and transnational mobility. We develop a new typology of social remittances as based on the principle of mobility. We argue that the degree to which transnational mobility is present in social remittances depends on the agency of the sender and on the nature of the receiving community. We further elaborate on such mobility-related concepts as “transnational re-scaling” (in reference to directionality of social remittances) and “translocal celebrity” (in reference to sender’s role in cultural production). Based on a large qualitative dataset, this study also contributes to a better understanding of the relationship between the local and the global.  相似文献   

9.
The postoppositional identity work of urban high school students is described. The youths had engaged in oppositional identity work that led to breakages with their worlds. Lona was a central figure who forged symbolic and social links that enabled the youths to construct "true" selves and to express identities in ethical relation to others. Lona's links engendered a politics of reconciliation that empowered marginalized youths to resituate their selves within, and transform, their worlds.  相似文献   

10.
Migratory animals are affected by various factors during their journeys, and the study of animal movement by radars has been instrumental in revealing key influences of the environment on flying migrants. Radars enable the simultaneous tracking of many individuals of almost all sizes within the radar range during day and night, and under low visibility conditions. We review how atmospheric conditions, geographic features and human development affect the behavior of migrating insects and birds as recorded by radars. We focus on flight initiation and termination, as well as in‐flight behavior that includes changes in animal flight direction, speed and altitude. We have identified several similarities and differences in the behavioral responses of aerial migrants including an overlooked similarity in the use of thermal updrafts by very small (e.g. aphids) and very large (e.g. vultures) migrants. We propose that many aerial migrants modulate their migratory flights in relation to the interaction between atmospheric conditions and geographic features. For example, aerial migrants that encounter crosswind may terminate their flight or continue their migration and may also drift or compensate for lateral displacement depending on their position (over land, near the coast or over sea). We propose several promising directions for future research, including the development and application of algorithms for tracking insects, bats and large aggregations of animals using weather radars. Additionally, an important contribution will be the spatial expansion of aeroecological radar studies to Africa, most of Asia and South America where no such studies have been undertaken. Quantifying the role of migrants in ecosystems and specifically estimating the number of departing birds from stopover sites using low‐elevation radar scans is important for quantifying migrant–habitat relationships. This information, together with estimates of population demographics and migrant abundance, can help resolve the long‐term dynamics of migrant populations facing large‐scale environmental changes.  相似文献   

11.
This article highlights the strategic nature of remittances in Zambian migration. Zambian migrants usually give only small gifts to their home-based relatives, not the large sums of money or goods used for investment that is documented in the literature on remitting elsewhere. In a case like Zambia, where so little surplus cash exists and the diversion of cash or other resources can have great material costs for the giver, why do Zambian migrants continue to remit? I argue that gift remitting develops strategic alliances that translate into insurance policies for the future, enabling Zambian migrants to "hedge their bets" in a volatile and rapidly changing socioeconomic terrain. This article focuses attention on the broad experiences and contexts of remitting and how the unpredictability of modern life may foster a renewed need for building alliances. I draw on fieldwork conducted from 1994-2001 with the Gwembe Tonga people of Zambia's Southern Province and recent ethnographic literature from Zambia. [Keywords: migration, gift, economy, intergenerational relations, Africa]  相似文献   

12.
Migrant songbirds are vulnerable to changes in climatic conditions on both the breeding and wintering grounds. For North American Neotropical migrants, the El Niño/Southern Oscillation (ENSO), via its effects on global precipitation and temperature, modulates the productivity of their temperate and tropical terrestrial ecosystems used during the course of their annual cycle. We evaluated how a densely nesting population of yellow warblers Dendroica petechia in a riparian forest in southern Manitoba, Canada, responded to the El Niño/Southern Oscillation (ENSO) between 1992 and 2001. Standardized mist netting was used to estimate apparent annual survival of adults and production of young. Both adult survival and the production of young were positively correlated with the Southern Oscillation Index (SOI). More specifically, values of both these demographic parameters were lowest during El Niño years and highest during La Niña years. These findings demonstrate the influence of climate on populations of Neotropical migrants in North America. The more frequent El Niños predicted to result from future global climate change could negatively affect populations of yellow warblers and other Neotropical migrants breeding in this region.  相似文献   

13.
Migratory species may be especially sensitive to climate change because their lifecycles are affected by dynamic ecological processes operating at global spatial scales. Insight into environmental effects upon en route decisions by migrants can therefore be a critical first step toward assessing their vulnerability to future climatic shifts. We extracted behaviour-related parameters from a recent formulation of multistate mark–recapture models, and used them to evaluate the importance of variation in local weather and broad-scale climate to decisions made by autumn passerine migrants at a coastal stopover site in Atlantic Canada. We found dramatic interannual fluctuations in the proportion of migrants that were transient (departing within a day of arrival), with annual average values ranging from 24% to 96% over the years 1996–2007. However, the relationships of stopover behaviour (transience and departure probability) to local weather (wind and precipitation) and to regional climatic fluctuations were similar across three distinct species groups and for birds of different fuel-loads, indicating the potential for both immediate (day-to-day) and long-term environmental influences (spanning several seasons). This cross-scale approach contributes valuable information toward the conservation of migrants in the face of a changing climate by (i) quantifying environmental influences on stopover behaviour in broad temporal and geographic contexts, and (ii) demonstrating largely parallel interannual variation in stopover site-use among birds with contrasting migratory timing and strategies.  相似文献   

14.
15.
Weather affects the demography of animals and thus climate change will cause local changes in demographic rates. In birds numerous studies have correlated demographic factors with weather but few of those examined variation in the impacts of weather in different seasons and, in the case of migrants, in different regions. Using capture-recapture models we correlated weather with apparent survival of seven passerine bird species with different migration strategies to assess the importance of selected facets of weather throughout the year on apparent survival. Contrary to our expectations weather experienced during the breeding season did not affect apparent survival of the target species. However, measures for winter severity were associated with apparent survival of a resident species, two short-distance/partial migrants and a long-distance migrant. Apparent survival of two short distance migrants as well as two long-distance migrants was further correlated with conditions experienced during the non-breeding season in Spain. Conditions in Africa had statistically significant but relatively minor effects on the apparent survival of the two long-distance migrants but also of a presumably short-distance migrant and a short-distance/partial migrant. In general several weather effects independently explained similar amounts of variation in apparent survival for the majority of species and single factors explained only relatively low amounts of temporal variation of apparent survival. Although the directions of the effects on apparent survival mostly met our expectations and there are clear predictions for effects of future climate we caution against simple extrapolations of present conditions to predict future population dynamics. Not only did weather explains limited amounts of variation in apparent survival, but future demographics will likely be affected by changing interspecific interactions, opposing effects of weather in different seasons, and the potential for phenotypic and microevolutionary adaptations.  相似文献   

16.
With increasing international interchange of personnel, international monitoring is necessary to decrease tuberculosis incidence in the world. This study aims to develop a new tool to determine origin of Mycobacterium tuberculosis strains isolated from Filipino patients living in Korea. Thirty-two variable number tandem repeat (VNTR) loci were used for discrimination of 50 Filipino M. tuberculosis strains isolated in the Philippines, 317 Korean strains isolated in Korea, and 8 Filipino strains isolated in Korea. We found that the VNTR loci 0580, 0960, 2531, 2687, 2996, 0802, 2461, 2163a, 4052, 0424, 1955, 2074, 2347, 2401, 3171, 3690, 2372, 3232, and 4156 had different mode among copy numbers or exclusively distinct copy number in VNTR typing between Filipino and Korean M. tuberculosis strains. When these differences of the VNTR loci were applied to 8 Filipino M. tuberculosis strains isolated in Korea, 6 of them revealed Filipino type while 2 of them had Korean type. Using the differences of mode or repeated number of VNTR loci were very useful in distinguishing the Filipino strain from Korean strain.  相似文献   

17.
Yang X 《Social biology》2001,48(1-2):151-170
Using Hubei province as a case study, this paper retests the detachment hypothesis against the three conventional hypotheses regarding migration-fertility linkage (i.e., selectivity, disruption, and adaptation hypotheses) in explaining migrant and non-migrant fertility differentials in China. The analysis of yearly order-specific birth probabilities suggests that temporary migrants exhibit a significantly higher probability of having a second or higher order birth than comparable permanent migrants and non-migrants. This higher fertility among temporary migrants occurs after migration; temporary migrants actually do not differ from non-migrants in fertility before migration. But permanent migrants experience no significant change in their fertility after migration. The results lend a strong support to the detachment hypothesis, which best explains the fertility differentials between migrant and non-migrant populations in contemporary China; the separation of temporary migrants' actual residence from their official one does lead to a greater likelihood among temporary migrants to have unplanned births.  相似文献   

18.
Despite recent advances, critical areas in the analysis of European migration remain underdeveloped. We have only a limited understanding of the consequences of migration for migrants and their descendants, relative to staying behind; and our insights of intergenerational transmission is limited to two generations of those living in the destination countries. These limitations stem from a paucity of studies that incorporate comparison with non-migrants – and return migrants – in countries of origin and which trace processes of intergenerational transmission over multiple generations. This paper outlines the theoretical and methodological discussions in the field, design and data of the 2,000 Families study. The study comprises almost 50,000 members of migrant and non-migrant Turkish families across three family generations, living in Turkey and eight European countries. We provide indicative findings from the study, framed within a theoretical perspective of “dissimilation” from origins, and reflect on its potential for future migration research.  相似文献   

19.
This article draws upon three years of ethnographic research within an emergency homeless shelter in Massachusetts to explore the subject-making effects of routine shelter helping practices. A medicalized discourse of deviancy is uncovered that provides the dominant conceptual framework within which both concerned homeless people and shelter staff remain enmeshed. As a result, helping practices focus on detecting, diagnosing, and treating understood deviancy within the bodies or selves of homeless people. The dominant discursive practices produce homeless subjects who learn to look within their selves for the "cause" of their homelessness. Treatment focuses on reforming and governing the self. Alternative discourses suggesting the need for practices challenging broader political economic processes are thus marginalized as peripheral and unreasonable.  相似文献   

20.
中国湖南舜皇山和大围山夏末鸟类   总被引:1,自引:0,他引:1  
于 2 0 0 2年 8月 2 1日至 9月 14日对位于湖南省西南部的舜皇山自然保护区和位于湖南省东北部的大围山自然保护区的鸟类区系进行了调查。在舜皇山自然保护区记录到 5 8种鸟类,在大围山自然保护区则记录到4 3种鸟类。在两个保护区内共采集 5 1种 186号标本,这些标本现保存在美国堪萨斯大学自然历史博物馆和生物多样性研究中心;还对另外 8种保护鸟类进行了拍照。调查期间发现大部分种类于近期刚完成繁殖;有 14种古北界迁徙种类把两个保护区作为停留地或作为越冬地。还对灰喉山淑鸟、小燕尾、斑背燕尾在水平和垂直分布范围的扩张进行了报道。  相似文献   

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