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The Seventeenth Data Release of the Sloan Digital Sky Surveys : Complete Release of MaNGA, MaStar, and APOGEE-2 Data
- 2022
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Ingår i: Astrophysical Journal Supplement Series. - : Institute of Physics (IOP). - 0067-0049 .- 1538-4365. ; 259:2
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Tidskriftsartikel (refereegranskat)abstract
- This paper documents the seventeenth data release (DR17) from the Sloan Digital Sky Surveys; the fifth and final release from the fourth phase (SDSS-IV). DR17 contains the complete release of the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey, which reached its goal of surveying over 10,000 nearby galaxies. The complete release of the MaNGA Stellar Library accompanies this data, providing observations of almost 30,000 stars through the MaNGA instrument during bright time. DR17 also contains the complete release of the Apache Point Observatory Galactic Evolution Experiment 2 survey that publicly releases infrared spectra of over 650,000 stars. The main sample from the Extended Baryon Oscillation Spectroscopic Survey (eBOSS), as well as the subsurvey Time Domain Spectroscopic Survey data were fully released in DR16. New single-fiber optical spectroscopy released in DR17 is from the SPectroscipic IDentification of ERosita Survey subsurvey and the eBOSS-RM program. Along with the primary data sets, DR17 includes 25 new or updated value-added catalogs. This paper concludes the release of SDSS-IV survey data. SDSS continues into its fifth phase with observations already underway for the Milky Way Mapper, Local Volume Mapper, and Black Hole Mapper surveys.
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| 2. |
- Becker-Dreps, Sylvia, et al.
(författare)
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Community Diarrhea Incidence Before and After Rotavirus Vaccine Introduction in Nicaragua
- 2013
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Ingår i: American Journal of Tropical Medicine and Hygiene. - : American Society of Tropical Medicine and Hygiene. - 0002-9637 .- 1476-1645. ; 89:2, s. 246-250
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Tidskriftsartikel (refereegranskat)abstract
- We estimated the incidence of watery diarrhea in the community before and after introduction of the pentavalent rotavirus vaccine in Leon, Nicaragua. A random sample of households was selected before and after rotavirus vaccine introduction. All children < 5 years of age in selected households were eligible for inclusion. Children were followed every 2 weeks for watery diarrhea episodes. The incidence rate was estimated as numbers of episodes per 100 child-years of exposure time. A mixed effects Poisson regression model was fit to compare incidence rates in the pre-vaccine and vaccine periods. The pre-vaccine cohort (N = 726) experienced 36 episodes per 100 child-years, and the vaccine cohort (N = 826) experienced 25 episodes per 100 child-years. The adjusted incidence rate ratio was 0.60 (95% confidence interval [CI] 0.40, 0.91) during the vaccine period versus the pre-vaccine period, indicating a lower incidence of watery diarrhea in the community during the vaccine period.
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| 3. |
- Becker-Dreps, Sylvia, et al.
(författare)
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Etiology of Childhood Diarrhea After Rotavirus Vaccine Introduction A Prospective, Population-based Study in Nicaragua
- 2014
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Ingår i: The Pediatric Infectious Disease Journal. - : Lippincott, Williams andamp; Wilkins. - 0891-3668 .- 1532-0987. ; 33:11, s. 1156-1163
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Tidskriftsartikel (refereegranskat)abstract
- Background: Nicaragua was the first developing nation to implement routine immunization with the pentavalent rotavirus vaccine (RV5). In this RV5-immunized population, understanding infectious etiologies of childhood diarrhea is necessary to direct diarrhea treatment and prevention efforts. Methods: We followed a population-based sample of children less than5 years in Leon, Nicaragua for diarrhea episodes through household visits. Information was obtained on RV5 history and sociodemographics. Stool samples collected during diarrhea episodes and among healthy children underwent laboratory analysis for viral, bacterial and parasitic enteropathogens. Detection frequency and incidence of each enteropathogen was calculated. Results: The 826 children in the cohort experienced 677 diarrhea episodes during 607.5 child-years of exposure time (1.1 episodes per child-year). At least 1 enteropathogen was detected among 61.1% of the 337 diarrheal stools collected. The most common enteropathogens among diarrheal stools were: norovirus (20.4%), sapovirus (16.6%), enteropathogenic Escherichia coli (11.3%), Entamoeba histolytica/dispar (8.3%), Giardia lamblia (8.0%) and enterotoxigenic E. coli (7.7%), with rotavirus detected among 5.3% of diarrheal stools. Enteropathogenic Escherichia coli and enterotoxigenic E. coli were frequently detected among stools from healthy children. Among children with diarrhea, norovirus was more commonly detected among younger children (less than2 years) and G. lamblia was more commonly detected among older children (2-4 years). The mean age of rotavirus detection was 34.6 months. Conclusions: In this Central American community after RV5 introduction, rotavirus was not commonly detected among children with diarrhea. Prevention and appropriate management of norovirus and sapovirus should be considered to further reduce the burden of diarrheal disease.
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| 4. |
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| 5. |
- Dahlblom, Kjerstin, et al.
(författare)
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Home alone : children as caretakers in León, Nicaragua
- 2009
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Ingår i: Children and society. - : Wiley. - 0951-0605 .- 1099-0860. ; 23:1, s. 43-56
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Tidskriftsartikel (refereegranskat)abstract
- This article seeks to explore and understand the life situations of sibling caretakers in poor areas in León, Nicaragua. The every day lives for caretakers were studied through observations and interviews with children, informants and parents. The children themselves were satisfied and proud to be trusted as caretakers and felt useful in contributing to their families' livelihood. However, in a life course perspective the caretaking role implies a narrowing of life options. Early on they seem to acquire essential life skills but as they grow older many are at risk of falling behind due to their marginalised situation and lack of basic education.
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| 6. |
- Dahlblom, Kjerstin, 1950-
(författare)
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Home alone : sibling caretakers in León, Nicaragua
- 2008
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Sibling caretaking, although common across time and cultures, has not been well researched from the carer’s point of view. In Nicaragua, ranked as one of the poorest countries in the Americas, sibling caretaking is common. The country’s historical background and its state of chronic poverty, widespread unemployment, loose family structures, and migration and mobility makes of the old practise of shared management child care a necessity. Households headed by sing¬le mothers constitute a particular Nica¬raguan charact¬eristic. Many children are expected to help in their own families and care for their siblings and other children living in their households. In its broadest sense sibling caretaking is a public health concern, and we conducted this study to widen the understanding of the phenomenon as it is represented in a setting undergoing a rapid social transition. The main objectives were to identify, describe and analyse the life situation of sibling caretakers in poor areas in León, Nicaragua, with focus on how they perceived it themselves. A combined qualitative and quantitative methodological design was used, mainly applying an ethnographic approach. A further ambition was to explore involvement of children in a participatory research process in accordance with the ‘Convention on the Rights of the Child’. The overall emotion expressed among the caretakers was pride, even if their situation often was characterized by stress and coping problems. They perceived their work as important for their families and they appreciated to fend for their siblings. Household work and nurturing of siblings were shaping the future lives of the caretakers and constituted part of their socialization. Even if many of these children achieve essential life skills as caretakers, they are at risk of falling behind as they grow older. Their long-term personal development is likely to be hampered by the obligations they have as caretakers. The carers' awareness of missing out on education was the most problematic issue for them. From a societal point of view, caretaking has negative consequences. The individual child is marginalised with limited access to basic education, contributing to overall low educational levels in Nicaragua. While the structuring conditions leading to sibling caretaking may be difficult to change, awareness of how these can affect children might make way for improvements in terms of access to school education and support from the society. The knowledge gained from this study should be further utilised to plan for interventions that take children’s perspectives into consideration.
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| 9. |
- Householder, John Ethan, et al.
(författare)
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One sixth of Amazonian tree diversity is dependent on river floodplains
- 2024
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Ingår i: NATURE ECOLOGY & EVOLUTION. - 2397-334X.
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Tidskriftsartikel (refereegranskat)abstract
- Amazonia's floodplain system is the largest and most biodiverse on Earth. Although forests are crucial to the ecological integrity of floodplains, our understanding of their species composition and how this may differ from surrounding forest types is still far too limited, particularly as changing inundation regimes begin to reshape floodplain tree communities and the critical ecosystem functions they underpin. Here we address this gap by taking a spatially explicit look at Amazonia-wide patterns of tree-species turnover and ecological specialization of the region's floodplain forests. We show that the majority of Amazonian tree species can inhabit floodplains, and about a sixth of Amazonian tree diversity is ecologically specialized on floodplains. The degree of specialization in floodplain communities is driven by regional flood patterns, with the most compositionally differentiated floodplain forests located centrally within the fluvial network and contingent on the most extraordinary flood magnitudes regionally. Our results provide a spatially explicit view of ecological specialization of floodplain forest communities and expose the need for whole-basin hydrological integrity to protect the Amazon's tree diversity and its function.
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| 10. |
- Källestål, Carina, 1954-, et al.
(författare)
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Assessing the Multiple Dimensions of Poverty : Data Mining Approaches to the 2004-14 Health and Demographic Surveillance System in Cuatro Santos, Nicaragua
- 2020
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Ingår i: Frontiers In Public Health. - : FRONTIERS MEDIA SA. - 2296-2565. ; 7
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Tidskriftsartikel (refereegranskat)abstract
- We identified clusters of multiple dimensions of poverty according to the capability approach theory by applying data mining approaches to the Cuatro Santos Health and Demographic Surveillance database, Nicaragua. Four municipalities in northern Nicaragua constitute the Cuatro Santos area, with 25,893 inhabitants in 5,966 households (2014). A local process analyzing poverty-related problems, prioritizing suggested actions, was initiated in 1997 and generated a community action plan 2002-2015. Interventions were school breakfasts, environmental protection, water and sanitation, preventive healthcare, home gardening, microcredit, technical training, university education stipends, and use of the Internet. In 2004, a survey of basic health and demographic information was performed in the whole population, followed by surveillance updates in 2007, 2009, and 2014 linking households and individuals. Information included the house material (floor, walls) and services (water, sanitation, electricity) as well as demographic data (birth, deaths, migration). Data on participation in interventions, food security, household assets, and women's self-rated health were collected in 2014. A K-means algorithm was used to cluster the household data (56 variables) in six clusters. The poverty ranking of household clusters using the unsatisfied basic needs index variables changed when including variables describing basic capabilities. The households in the fairly rich cluster with assets such as motorbikes and computers were described as modern. Those in the fairly poor cluster, having different degrees of food insecurity, were labeled vulnerable. Poor and poorest clusters of households were traditional, e.g., in using horses for transport. Results displayed a society transforming from traditional to modern, where the forerunners were not the richest but educated, had more working members in household, had fewer children, and were food secure. Those lagging were the poor, traditional, and food insecure. The approach may be useful for an improved understanding of poverty and to direct local policy and interventions.
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