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Palmas de Monte Alto, Brazil

Maciel E.S.,University of Sao Paulo | Maciel E.S.,Centro Universitario Luterano Of Palmas | Vilarta R.,University of Campinas | Modeneze D.M.,University of Campinas | And 4 more authors.
Cadernos de Saude Publica | Year: 2013

This study aimed to check for any significant differences in perceived quality of life, specifically aspects of a physical nature, among volunteers who are more physically active and those less physically active in a university community. The sample consisted of 1,966 volunteers in a university community in Brazil. To assess physical activity levels, volunteers responded to the International Physical Activity Questionnaire (IPAQ), and to analyse the perception of quality of life they responded to WHOQOL-bref, which is classified into three groups according to level of physical activity, taking into account the metabolic equivalent index (MET) over a full week. For comparison, consideration was given to the first and third tertiles, respectively, namely groups of more and less active students. The results indicated that individuals who engaged in more physical activity had a more positive perception of quality of life compared to those who were less active in physical aspects related to the ability to work, energy for day-to-day activities and locomotion. Source


De Abreu A.J.,University of Paraiba Valley | Fagundes P.R.,University of Paraiba Valley | Bolzan M.J.A.,Federal University of Goais | de Jesus R.,University of Paraiba Valley | And 3 more authors.
Journal of Atmospheric and Solar-Terrestrial Physics | Year: 2014

This investigation studies traveling planetary wave ionospheric disturbance (TPWID) type oscillations on the modulation of the F region post-sunset height rise during the electric field pre-reversal enhancement (PRE). The studied period, from January 2009 to April 2010, occurred during the extremely low solar activity, when the averaged F10.7 was 73 [W/m2Hz]. In addition, the results are compared with those for a high solar activity period of 2003. We present ionospheric sounding observations carried out near equatorial region (Palmas 10.2°S, 48.2°W, dip latitude 5.5°S) and low latitude region (São José dos Campos 23.2°S, 45.9°W, dip latitude 17.6°S; located under the southern crest of the equatorial ionospheric anomaly) in the Brazilian sector. The studies found that the magnitude of the electric field during PRE time and consequently the day-to-day variations of the F region virtual height at equatorial region and low latitude are modulated by waves with periods of around 3-4, 5-6, 10-15, and 24-35 days. The observations show that during low solar activity, the TPWID oscillations are lower than during high solar activity, but with the same amplitude around 200km. The TPWID long period oscillations of around 27 days present very distinct characteristics at the equatorial region and low latitude, indicating that these regions are not directly connected. Our study also shows that the response to the TPWID short period of around 3-4, 5-6, and 10-15 days at the equatorial region and low latitude present very clear coupling during January-February, 2009, possibly due to the sudden stratospheric warming and TPWID mechanisms. © 2014 Elsevier Ltd. Source


De Abreu A.J.,University of Paraiba Valley | Fagundes P.R.,University of Paraiba Valley | Bolzan M.J.A.,Federal University of Goais | Gende M.,National University of La Plata | And 5 more authors.
Journal of Atmospheric and Solar-Terrestrial Physics | Year: 2014

This investigation studies traveling planetary wave ionospheric disturbance (TPWID) type oscillations on the modulation of the F region virtual height rise during the E×. B electric field pre-reversal enhancement (PRE), near sunset hours. We also studied their role in the generation of equatorial spread F (ESF) and GPS phase fluctuations during periods of the last extreme low solar activity (LSA) of January 2009 to April 2010 (F10.7-=73). A comparison is made with periods of high solar activity (HSA) in 2003 and 2004 near equatorial region. The ionospheric irregularities investigated are medium (bottom-side) and large (plasma bubble) scales. Ionospheric F region oscillations with period of days are due to the TPWIDs, which play an important role in producing favorable or unfavorable conditions for equatorial ionospheric irregularities, changing the electron vertical profile and F region height. In this paper, we present simultaneous ionospheric sounding (ionosonde) and GPS vertical total electron content (vTEC) observations carried out near equatorial region (Palmas 10.2°S, 48.2°W) and low latitude region (São José dos Campos 23.2°S, 45.9°W; located under the southern crest of the equatorial ionospheric anomaly), Brazil. Observations show that the occurrence of fresh ESF during LSA and HSA and fresh GPS phase fluctuations at equatorial region follow the trend of day-to-day variations in the F region virtual height, which are due to electric field PRE modulated by TPWID wave like oscillations. During LSA, the altitude of 250. km acts as a threshold height for the generation of fresh ionospheric irregularities, whereas during HSA, the threshold height is 300. km. The observations also found a strong increase in the generation of fresh ionospheric irregularities from October 2009 to March 2010 during LSA and from September 2003 to March 2004 during the HSA. Furthermore, in LSA, the period of fresh ionospheric irregularities was less than during HSA, though both periods followed a similar seasonal pattern. In the low-latitude, we observed more ESFs than phase fluctuations because ionosonde is more sensitive than GPS. We also observed periods with and without day-to-day oscillations in the F region virtual height. The observations made by GPS stations and ionosondes in the equatorial region, for much of the period analyzed, presented similar results with regard to the generation of equatorial ionospheric irregularities. In the low latitude, some nights of January, February, October, and December 2009 also showed a similarity. © 2014 Elsevier Ltd. Source


da Silva Maciel E.,Centro Universitario Luterano Of Palmas | Sonati J.G.,University of Campinas
Quality of Life and Public Health: Assessment and Intervention | Year: 2015

This book is designed to address the phenomenon of quality of life (QOL) as a central focus of public health. The complexity that involves the subject has aroused interest in various areas of knowledge, even though there is a consensus that the concept of QOL is subjective and transdisciplinary. This work has been organized following a demand that stimulates a discussion between areas, which tries to understand health and education as key factors to establish a freer and autonomous society. Additionally, it seeks to promote QOL in the perspective of better life quality in the context of public health. Therefore, this book presents and discusses theories around the theme QOL and its different facets. Its complexity is approached by different perspectives that will enable the reader to have contact with a transdisciplinary work about one of the most relevant topics to human health. In addition, we will present models of interventions carried out in Brazil to promote health focused on improving the perception of QOL in different population groups. We believe that these experiences can greatly contribute to the formation of healthcare academicians and also to the development of similar and much-needed strategies throughout the world. © 2015 by Nova Science Publishers, Inc. All rights reserved. Source


Souza J.G.,Centro Universitario Luterano Of Palmas | Silva E.M.,Centro Universitario Luterano Of Palmas | Brito P.F.,Centro Universitario Luterano Of Palmas | Costa J.A.F.,Federal University of Rio Grande do Norte | And 2 more authors.
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2013

Knowledge discovery in social networks is not a trivial task. Often research in this context uses concepts of data mining, social network analysis, trust discovery and sentiment analysis. The connected network of people is generally represented by a directed graph (social graph), whose formulation includes representing people as nodes and their relationships as edges, which also can be labeled to describe the relationship (eg. friend, son and girlfriend). This environment of connected nodes behaves like a dynamic network, whose nodes and connections are constantly being updated. People tend to communicate or relate better with other people who have a common or similar way of thinking, which generates groups of people with common interests, the communities. This paper studies the use of a graph clustering approach, the Coring Method, originally employed in image segmentation task, in order to be applied in the context of community discovery on a social network environment. © 2013 Springer-Verlag Berlin Heidelberg. Source

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