scholarly journals The Burden of Dengue in Children by Calculating Spatial Temperature: A Methodological Approach Using Remote Sensing Techniques

Author(s):  
Oliver Mendoza-Cano ◽  
Pedro Rincón-Avalos ◽  
Verity Watson ◽  
Abdou Khouakhi ◽  
Jesús López-de la Cruz ◽  
...  

Background: Dengue fever is one of the most important arboviral diseases. Surface temperature versus dengue burden in tropical environments can provide valuable information that can be adapted in future measurements to improve health policies. Methods: A methodological approach using Daymet-V3 provided estimates of daily weather parameters. A Python code developed by us extracted the median temperature from the urban regions of Colima State (207.3 km2) in Mexico. JointPoint regression models computed the mean temperature-adjusted average annual percentage of change (AAPC) in disability-adjusted life years (DALY) rates (per 100,000) due to dengue in Colima State among school-aged (5–14 years old) children. Results: Primary outcomes were average temperature in urban areas and cumulative dengue burden in DALYs in the school-aged population. A model from 1990 to 2017 medium surface temperature with DALY rates was performed. The increase in DALYs rate was 64% (95% CI, 44–87%), and it seemed to depend on the 2000–2009 estimates (AAPC = 185%, 95% CI 18–588). Conclusion: From our knowledge, this is the first study to evaluate surface temperature and to model it through an extensive period with health economics calculations in a specific subset of the Latin-American endemic population for dengue epidemics.

2018 ◽  
Vol 49 (2) ◽  
pp. 137-138
Author(s):  
Lena Barrera

The Pan American Health Organization (PAHO) with the World Hypertension League has established the 17th May to promote the prevention and control of High Blood Pressure (HBP). Currently nearly 1.13 billion of adults suffer from HBP (blood pressure ≥140/90 mm Hg) worldwide. While HBP prevalence decreased in high income countries (HIC) between 1975 and 2015, the opposite trend was observed in low- and middle- income countries (LMIC). Particularly, in Latin American and Caribbean countries the prevalence decreased from 40.6% to 26.8% and from 26.8% to 19.4% for men and women between 45 to 49 years old respectively. However, in 2015, HBP accounted for 8.9 of the total of disability adjusted life years (DALYS) and was associated with 4.9 million, 2.0 million and 1.5 million deaths due to ischemic heart disease, hemorrhagic stroke and ischemic stroke respectively. Therefore, HBP is the leading cardiovascular risk factor worldwide. In Colombia, the last National Health Survey reported a global prevalence of 22.8% and nearly 60% for those between 60 and 69 years in 2007


2016 ◽  
Vol 9 (2) ◽  
pp. 614 ◽  
Author(s):  
Elânia Daniele Silva Araújo

A intensa urbanização causa diversos problemas de natureza ambiental, climática e social. O crescimento não planejado da população urbana e a remoção da vegetação são fatores que intensificam estes problemas. As temperaturas na cidade são significativamente mais quentes do que as suas zonas rurais circundantes devido às atividades humanas. As intensas mudanças espaciais em áreas urbanas, promovem significativo aumento na temperatura, causando o chamado efeito de Ilha de Calor Urbano (ICU). Campina Grande é uma cidade de tamanho médio que experimentou um crescimento desordenado, desde o tempo do comércio de algodão e, como qualquer cidade de grande ou médio porte, sofre alterações em seu espaço. Dessa forma, este estudo teve por objetivo analisar a variabilidade espaço-temporal da temperatura da superfície (Ts) e detectar ICU, através de técnicas de sensoriamento remoto. Para o efeito, foram utilizadas imagens dos satélites Landsat 5 e 8, dos anos de 1995, 2007 e 2014. Aumentos da Ts foram bem evidentes e foram detectadas duas ICU. Campina Grande mostra um padrão de tendência: o crescimento urbano não planejado é responsável por mudanças no ambiente físico e na forma e estrutura espacial da cidade, o que se reflete sobre o microclima e, em última análise, na qualidade de vida das pessoas.   ABSTRACT The intense urbanization causes several problems of environmental, climate and social nature. The unplanned growth of urban population and the vegetation removal are factors that deepen these problems. Temperatures in the city are significantly warmer than its surrounding rural areas due to human activities. Large spatial changes in urban areas promote significant increase in temperature, causing the so-called Urban Heat Island effect (UHI). Campina Grande is a medium-sized town that experienced an uncontrolled growth since the time of the cotton trade and like any large or medium-sized city, undergoes changes in its space. Therefore, this study aimed to analyze surface temperature spatial and temporal variability and to detect potential UHI, through remote sensing techniques. Spectral images from Landsat 5 and 8 satellites were used. Using images from years 1995, 2007 and 2014, considerable increases in temperature were identified and two UHI were recognize. Campina Grande shows a trend pattern: the urban unplanned growth is responsible for changes in the physical environment and in the form and spatial structure of the city, reflecting on people quality of life. Keywords: change detection, surface temperature, heat islands, urbanization.   


2015 ◽  
Vol 9 (1) ◽  
pp. 12-21 ◽  
Author(s):  
Eduardo Betanzo-Quezada ◽  
José A. Romero-Navarrete; Saúl A. Obregón-Biosca

While in developed countries the effects of urban freight transport on congestion levels, environment and quality of life of the population have been recognized and studied, in Latin American countries a limited amount of reports have been produced on this issue, focusing only on major urban agglomerations and capital cities. The aim of this paper is to describe and discuss the results and the key analytical concepts supporting a research work carried out in the Queretaro Metropolitan Area, within the 2003−2014 period. The methodological approach considered includes a multi-year research effort for creating analytical tools and evaluation methods. As a result of this effort, urban freight related issues have been characterized in a context of urban and peri-urban interacting environments for a medium-sized city. The resulting methods and tools can now be used for studying metropolitan areas on a nation-wide basis.


Art History ◽  
2014 ◽  
Author(s):  
Constance Cortez

The history of Chicana/o art is a relatively new field. The emergence of scholarly treatments of Chicana/o art—art produced by American artists of Mexican descent who self-identify as Chicanas/os—coincided with the Chicano movement (el movimiento) of the 1960s and 1970s. As is the case for many Latinas/os (Americans of Latin American descent), for Chicanas/os, this period marked a watershed in political activities and in the growing desire for self-determination and solidarity. Thus, many early scholars of Chicana/o art focused primarily on the political implications of the artwork vis-à-vis national dialogues regarding race, education, and labor equity. Over the last five decades, scholarly examinations of art works and artists have become more heterogeneous in format as well as methodological approach. This is, in part, a result of the backgrounds of the writers themselves, most of whom are not from art-historical backgrounds. Anthropologists, historians, artists, film critics, psychologists, and collectors have all contributed to the shape of the current discourse on Chicana/o art. However, while educational training may vary, many of these scholars come from activist backgrounds, and all of them are invested in the unique visions of the American experience put forward by the artists. Further, it can be argued that these educational dissimilarities themselves actually enhance the dynamic of the scholarship, and that they reflect an intracultural diversity found in the art forms and their practitioners. Another factor impacting the Chicana/o scholarship is the geographic location of the artists themselves, who come from communities throughout the United States. Most Chicanas/os live in the Southwest (Texas, New Mexico, Colorado, Arizona, California), but there is also a significant, more recently arrived, population in Chicago. The development and the choices of visual vocabulary utilized by artists is influenced by contemporary and, sometimes, colonial histories and experiences, all of which vary from region to region and, sometimes, from city to city. Further, since most Chicanas/os make their homes in large urban areas, the scholarship seems to be focused on art production in large cities, such as Los Angeles or San Antonio. Ultimately, this weight given to urban centers has had the effect of precluding the production of more in-depth explorations of artwork produced by artists located in smaller towns and rural areas. Scholarly diversity and the intracultural diversity of Chicanas/os clearly impact the methodological and historical trajectory of the field. The historic venues for scholarship differ markedly from more established art-historical fields. While surveys of artists and art (in Italian Renaissance studies, for instance) begin almost with the inception of the period, surveys of Chicana/o art and artists are much more recent. With the exception of a single publication in (Quirarte 1973, cited under General Overviews), all date from the late 1980s. This situation, in part, is connected to patronage and the art market. The recent growth in survey texts is also clearly reflective of the growth in Chicano studies programs as well as of the changing demographics of Latinas/os in the United States. The principal vehicle for scholarly literature has been exhibition catalogues, a constant presence since the inception of the Chicano movement. Initially, catalogues and exhibitions were produced and hosted by small community-based galleries and centers. Since the 1990s, exhibitions and catalogue production are now part of the programming of major museums. As collecting and exposure increased, so too did the publication of monographs and articles on various aspects of Chicana/o Art.


2015 ◽  
Vol 9 (1) ◽  
pp. 12-21 ◽  
Author(s):  
Eduardo Betanzo-Quezada ◽  
José A. Romero-Navarrete; Saúl A. Obregón-Biosca

While in developed countries the effects of urban freight transport on congestion levels, environment and quality of life of the population have been recognized and studied, in Latin American countries a limited amount of reports have been produced on this issue, focusing only on major urban agglomerations and capital cities. The aim of this paper is to describe and discuss the results and the key analytical concepts supporting a research work carried out in the Queretaro Metropolitan Area, within the 2003−2014 period. The methodological approach considered includes a multi-year research effort for creating analytical tools and evaluation methods. As a result of this effort, urban freight related issues have been characterized in a context of urban and peri-urban interacting environments for a medium-sized city. The resulting methods and tools can now be used for studying metropolitan areas on a nation-wide basis.


Author(s):  
Scott Burris ◽  
Micah L. Berman ◽  
Matthew Penn, and ◽  
Tara Ramanathan Holiday

Chapter 5 discusses the use of epidemiology to identify the source of public health problems and inform policymaking. It uses a case study to illustrate how researchers, policymakers, and practitioners detect diseases, identify their sources, determine the extent of an outbreak, and prevent new infections. The chapter also defines key measures in epidemiology that can indicate public health priorities, including morbidity and mortality, years of potential life lost, and measures of lifetime impacts, including disability-adjusted life years and quality-adjusted life years. Finally, the chapter reviews epidemiological study designs, differentiating between experimental and observational studies, to show how to interpret data and identify limitations.


Author(s):  
Susan M. Sawyer ◽  
George C. Patton

This chapter describes how the profile of physical and mental health and well-being changes across adolescence. The biological context of healthy adolescent growth and development is reviewed, including secular patterns of puberty and brain maturation. The structural and social determinants of adolescent health are then described. Adolescent health outcomes, including patterns of risk behaviors, emerge from the interaction between biological influences and social health determinants. Estimates of mortality and disability-adjusted life years are used to describe three patterns of adolescent health and well-being that vary by age, sex, and national wealth. Globally, the burden of disease increases across adolescence, varying markedly between and within countries. Comprehensive, multisectoral, evidence-informed actions are required that match these conspicuous adolescent health problems, emerging health risks, and major social determinants. Such actions, including quality education and health services, differ greatly from those that benefit younger children yet have similarly high benefit–cost ratios.


2021 ◽  
Vol 13 (8) ◽  
pp. 4382
Author(s):  
Gonzalo Salazar ◽  
Paloma González

In the current global scenario, in which mobility has been strongly impacted, it is relevant to highlight certain mobility experiences of Indigenous Latin American peoples, in which new cultural and geographical elements justify revisiting this phenomenon. In this context, the mobility of the Aymara ethnic group offers an opportunity for such a second look. Although the subject has been approached from the perspectives of internal migration processes and physical movement, as in other Latin American cases, studies have omitted some important aspects for its analysis, such as the practices, meanings, and political implications associated with mobility. Based on the new mobility paradigm, this article seeks to strengthen the perspective on mobility by researching rural-urban mobility practices and their meaning regarding the experiences of Aymara people who migrated from the rural municipality of Putre to settle in the city of Arica from the 1950s. At the same time, it is shown that these Aymara mobility practices imply spatiotemporal dynamics that are key for the construction of place, and allow for a widening of base elements that should be considered in the new mobility paradigm. This research is based on five years of ethnography, including mobile accompaniment and semi-structured interviews. This methodological approach has allowed researchers to explore how elements related to physical and symbolic mobility have constantly constructed relational spaces within the Arica and Parinacota region over time. This shows that mobility does not only refer to physical movement, but to politics, emotions, culture, and memory as well. From these results, the article examines and discusses key elements related to physical and symbolic mobility, and their implications in political and intercultural terms.


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