scholarly journals Evaluation and planning of Chagas control activities using geospatial tools

2019 ◽  
Vol 14 (2) ◽  
Author(s):  
Diego Weinberg ◽  
Mario Lanfri ◽  
Carlos M. Scavuzzo ◽  
Marcelo Abril ◽  
Sofía Lanfri

Chagas continues to be a relevant public health problem in Latin America. In this work, we present a spatiotemporal analysis applied for the evaluation and planning of Chagas vector control strategies. We analysed the spatial distribution of the vector Triatoma infestans infestation related to ongoing control interventions cycles in rural communities near Añatuya, Santiago del Estero, Argentina. A geographical information system was developed for the spatial analysis obtaining, for each house, variables that describe the history of spraying and infestation at each time of interventions. Bi-dimensional histograms were used to describe the spatiotemporal pattern of these activities and peri-domestic infestation at the last intervention was modelled by a neural network model. We qualitatively evaluate control programmes considering the history of infestation and spraying from a spatiotemporal point of view, incorporating new ways of visualising this information. Predictions are based on novel, non-linear models and spatiotemporal indices, which should be useful for strategically allocating Chagas control resources in the future and thus help to better plan spraying strategies.

2018 ◽  
Vol 26 (3) ◽  
pp. 77-97
Author(s):  
Nawaf Abdul Aziz Al-Jahmah Nawaf Abdul Aziz Al-Jahmah

In the two years (625-626 AH) (1227-1228 AD), Ibn Almugawer gave a precise description of Mecca Almukaramah in his era, pointing to the importance of Mecca Almukaramah and its religious rank. The material presented by him is of great importance because it filled a gap in the traveling and geographical information of Mecca Almukaramah at the beginning of the seventh century AH (13 AD), especially since Ibn Almugawer was not just a chatty and a historian, but also a traveler with accurate observation. In view of the importance of the book from the scientific and historical point of view, we have decided to re-consult it, especially to its most documented editions (Oscar Lofgren Verification), to explore its material about Makkah Almukaramah and to vet some of its details and references that reflect an important phase in the history of Mecca Almukaramah, for the paucity of the writing about and the disturbance of the available historical material around it.


2018 ◽  
Vol 146 (13) ◽  
pp. 1680-1688 ◽  
Author(s):  
Ling Sun ◽  
Lu-Xi Zou

AbstractHemorrhagic fever with renal syndrome (HFRS) caused by hantaviruses is a serious public health problem in China, accounting for 90% of HFRS cases reported globally. In this study, we applied geographical information system (GIS), spatial autocorrelation analyses and a seasonal autoregressive-integrated moving average (SARIMA) model to describe and predict HFRS epidemic with the objective of monitoring and forecasting HFRS in mainland China. Chinese HFRS data from 2004 to 2016 were obtained from National Infectious Diseases Reporting System (NIDRS) database and Chinese Centre for Disease Control and Prevention (CDC). GIS maps were produced to detect the spatial distribution of HFRS cases. The Moran's I was adopted in spatial global autocorrelation analysis to identify the integral spatiotemporal pattern of HFRS outbreaks, while the local Moran's Ii was performed to identify ‘hotspot’ regions of HFRS at province level. A fittest SARIMA model was developed to forecast HFRS incidence in the year 2016, which was selected by Akaike information criterion and Ljung–Box test. During 2004–2015, a total of 165 710 HFRS cases were reported with the average annual incidence at province level ranged from 0 to 13.05 per 100 000 persons. Global Moran's I analysis showed that the HFRS outbreaks presented spatially clustered distribution, with the degree of cluster gradually decreasing from 2004 to 2009, then turned out to be randomly distributed and reached lowest point in 2012. Local Moran's Ii identified that four provinces in northeast China contributed to a ‘high–high’ cluster as a traditional epidemic centre, and Shaanxi became another HFRS ‘hotspot’ region since 2011. The monthly incidence of HFRS decreased sharply from 2004 to 2009 in mainland China, then increased markedly from 2010 to 2012, and decreased again since 2013, with obvious seasonal fluctuations. The SARIMA ((0,1,3) × (1,0,1)12) model was the most fittest forecasting model for the dataset of HFRS in mainland China. The spatiotemporal distribution of HFRS in mainland China varied in recent years; together with the SARIMA forecasting model, this study provided several potential decision supportive tools for the control and risk-management plan of HFRS in China.


1992 ◽  
Vol 25 (11) ◽  
pp. 457-464 ◽  
Author(s):  
M. Vighi

A strategy for the control of environmental pollution should be based on three fundamental steps: a- assessment of the environmental aspects of the problem (exposure to pollutant chemicals, damages to man and the environment, etc ); b- economic evaluation (costs and benefits from chemical usage, evaluation of damages, etc ); c- institutional aspects (adoption of environmental standards, regulations, etc. ). Thus, an efficient collaboration between environmental and social sciences is of paramount importance in environmental decision making. To reach this objective it is essential to know exactly what kind of information can be produced by each science. In this paper an integrated ecotoxicological approach, able to produce descriptive as well predictive results, is presented. Its application to an exercise of collaboration between ecotoxicology and socio-economical sciences is discussed. From this point of view, the case history of herbicide contamination of groundwater in Italy is described.


2021 ◽  
Vol 15 (7) ◽  
pp. e0009579
Author(s):  
Miriam Cardozo ◽  
Federico Gastón Fiad ◽  
Liliana Beatríz Crocco ◽  
David Eladio Gorla

After the decrease of the relative importance of Triatoma infestans, a number of studies reported the occurrence of sylvatic triatomines dispersing actively to domestic environments in the dry western Chaco Region of Argentina. Anthropic modification of the landscape is mentioned as one of the main causes of the increase in domicile invasion. The aim of this study was to describe the occurrence and frequency of sylvatic triatomines invading rural houses, and to evaluate the effect of habitat fragmentation and other ecological factors on the invasion of rural houses in central Argentina. We hypothesized that the decrease in food sources and the loss of wild ecotopes, as a consequence of habitat fragmentation, increase the chances of invasion by triatomines. The entomological data was collected by community-based vector surveillance during fieldwork carried out between 2017–2020, over 131 houses located in fourteen rural communities in the northwest of Córdoba Province (central Argentina). We used generalized linear models to evaluate the effect of (i) the environmental anthropic disturbance in the study area, (ii) the composition and configuration of the landscape surrounding the house, (iii) the spatial arrangement of houses, (iv) and the availability of artificial refuges and domestic animals in the peridomicile, on house invasion by triatomines. We report the occurrence of seven species of triatomines invading rural houses in the study area -T. infestans, T. guasayana, T. garciabesi, T. platensis, T. delpontei, T. breyeri and P. guentheri-. Study data suggest that invasion by triatomines occurs with higher frequency in disturbed landscapes, with houses spatially isolated and in proximity to subdivided fragments of forest. The availability of domestic refuges in the peridomestic structures as well as the presence of a higher number of domestic animals increase the chances of invasion by triatomines.


2021 ◽  
Vol 17 (1) ◽  
pp. 43-60
Author(s):  
Dmitry Timokhin

Among the historical and geographical works of the XII century, researchers were less in demand for an anonymous monument, which is dated by scientists to 1126 and is called «Mujmal at-tawarih wa-l-kisas» («a Set of stories and narratives»). Despite the fact that this anonymous work has been known to the scientific world for quite a long time, V. V. Barthold has already given it a detailed description in one of his works, so far we have not seen its translation into European languages, as well as special studies on this monument. Russian and foreign scholars have focused on the description of «Mujmal at-tavarikh» either in the analysis of the corpus of monuments of the XII century, or in General works on the history of Persian literature or Seljuk historiography. In such studies, for obvious reasons, the authors have given «Mujmal at-tawarih» much less attention than it, from our point of view, deserves. At the same time, the anonymous essay, which will be discussed in this article, was analyzed, with rare exceptions, for the content of historical information in it. In the same article, we will be interested in both historical and geographical information that can be found in the framework of «Mujmal at-tavarikh» regarding Dagestan. Note that this kind of research is the first experience, at least we are not aware of other special works of this kind, the analysis of «Mujmal at-tawarih» for the presence of information in this source for the specified region. We will also be interested in possible historiographical connections between this work and earlier Arab-Persian historical and geographical monuments. Given the fact that this monument, as the researchers have already noted, is compiled, it seems to us an important scientific task to identify the above-mentioned connections. We hope that this article will increase the interest of researchers, both directly to «Mujmal at-tavarikh» and to the history of Dagestan in the pre-Mongol period.


2006 ◽  
pp. 112-127 ◽  
Author(s):  
V. Nazarov

The attempts to reconstruct the instruments of interbudget relations take place in all federations. In Russia such attempts are especially popular due to the short history of intergovernmental relations. Thus the review of the ¬international experience of managing interbudget relations to provide economic and social welfare can be useful for present-day Russia. The author develops models of intergovernmental relations from the point of view of making decisions about budget authorities’ distribution. The models that can be better applied in the Russian case are demonstrated.


2008 ◽  
Vol 63 (4) ◽  
pp. 769-770
Author(s):  
Csaba Pléh

Danziger, Kurt: Marking the mind. A history of memory . Cambridge University Press, Cambridge, 2008Farkas, Katalin: The subject’s point of view. Oxford University Press, Oxford, 2008MosoninéFriedJudités TolnaiMárton(szerk.): Tudomány és politika. Typotex, Budapest, 2008Iacobini, Marco: Mirroring people. The new science of how we connect with others. Farrar, Straus and Giroux, New York, 2008Changeux, Jean-Pierre. Du vrai, du beau, du bien.Une nouvelle approche neuronale. Odile Jacob, PárizsGazzaniga_n


2020 ◽  
Vol 4 (1) ◽  
pp. 67-86
Author(s):  
Elisabeth Heyne

AbstractAlthough visual culture of the 21th century increasingly focuses on representation of death and dying, contemporary discourses still lack a language of death adequate to the event shown by pictures and visual images from an outside point of view. Following this observation, this article suggests a re-reading of 20th century author Elias Canetti. His lifelong notes have been edited and published posthumously for the first time in 2014. Thanks to this edition Canetti's short texts and aphorisms can be focused as a textual laboratory in which he tries to model a language of death on experimental practices of natural sciences. The miniature series of experiments address the problem of death, not representable in discourses of cultural studies, system theory or history of knowledge, and in doing so, Canetti creates liminal texts at the margins of western concepts of (human) life, science and established textual form.


2013 ◽  
Vol 22 (3-4) ◽  
pp. 255-277 ◽  
Author(s):  
Vladimír Bačík ◽  
Michal Klobučník

Abstract The Tour de France, a three week bicycle race has a unique place in the world of sports. The 100th edition of the event took place in 2013. In the past of 110 years of its history, people noticed unique stories and duels in particular periods, celebrities that became legends that the world of sports will never forget. Also many places where the races unfolded made history in the Tour de France. In this article we tried to point out the spatial context of this event using advanced technologies for distribution of historical facts over the Internet. The Introduction briefly displays the attendance of a particular stage based on a regional point of view. The main topic deals with selected historical aspects of difficult ascents which every year decide the winner of Tour de France, and also attract fans from all over the world. In the final stage of the research, the distribution of results on the website available to a wide circle of fans of this sports event played a very significant part (www.tdfrance.eu). Using advanced methods and procedures we have tried to capture the historical and spatial dimensions of Tour de France in its general form and thus offering a new view of this unique sports event not only to the expert community, but for the general public as well.


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