MÍDIA E COMUNIDADE: estudo sobre produção e recepção da rádio Heliópolis FM

O trabalho é um estudo sobre produção e recepção da rádio Heliópolis FM, por seu público alvo, moradores de Heliópolis. O objetivo foi compreender como a rádio é percebida por seus ouvintes. Metodologicamente, o estudo foi divido em duas etapas. A primeira é mais conceitual e baseada em pesquisa bibliográfica. Na etapa seguinte, resgata-se o histórico da emissora e verifica-se a apropriação da Heliópolis FM por moradores e se a emissora desempenha papel comunitário, investigando-se como a rádio é apropriada por seus ouvintes assíduos. A aproximação à recepção foi feita tendo por base a vertente teórico-metodológica do uso social dos meios, de Jesús Martín-Barbero, segundo o qual este tipo de estudo consiste no deslocamento do espaço de interesse dos meios para o lugar onde é produzido o seu sentido movimentos sociais e, de um modo especial, daqueles que partem do bairro (1997). A técnica usada foi a entrevista semi-estruturada. Conclui-se que a rádio é percebida como comunitária por seus receptores principalmente porque abre espaço para a população local produzir programas, escolher as músicas que serão tocadas, apresentar seus trabalhos e utilizar seus serviços como o de localização de pessoas e documentos perdidos gratuitamente.(AU)

Impacto do contexto de trabalho e da resiliência sobre o bem-estar no trabalho de profissionais dos Centros de Atenção Psicossocial

Este estudo teve como intuito investigar o impacto do contexto de trabalho e da resiliência sobre o bem-estar no trabalho em profissionais dos Centros de Atenção Psicossocial (CAPS). Os CAPS são serviços públicos substitutivos ao modelo asilar para tratamento de pessoas em sofrimento psíquico, preconizado e fundamentado na Política Nacional de Saúde Mental (PNSM). Para medir o contexto de trabalho utilizou-se a Escala de Avaliação do Contexto de Trabalho (EACT) que investiga as condições de trabalho, a organização do trabalho e as relações sócio profissionais. Já o instrumento utilizado para medir a capacidade dos trabalhadores em manter o nível de desempenho no trabalho mesmo em situações complexas e desgastantes foi a Escala de Avaliação de Resiliência no Trabalho (EART). Por último, investigou-se o nível de bem-estar do público pesquisado através do Inventário de Bem- Estar no Trabalho (IBET-13). O bem-estar no trabalho tem sido considerado como um construto psicológico resultado de vínculos positivos com o trabalho e com a organização. Participaram 81 profissionais dos CAPS das cidades de Petrolina PE e São Bernardo do Campo SP, com idade média de 37 anos (DP= 10,45), em sua maioria do sexo feminino (65,4%), com níveis de escolaridade acima do ensino superior e pós-graduação completa (ambos com 29%), que se declararam casados ou em união estável (39%). Neste estudo, considerou-se bem-estar no trabalho como variável critério e resiliência no trabalho e contexto de trabalho como preditores. Foram realizadas análises estatísticas exploratórias e descritivas, análises de regressão e análises de variância (ANOVA) para descrever participantes, variáveis e testar o modelo. Os resultados apoiaram parcialmente o modelo de predição, pois apenas o fator relações sócio profissionais se confirmou como preditor significativo de Bem-estar no Trabalho, e não houve predição significativa com as demais variáveis (Condições de Trabalho, Organização do Trabalho e Resiliência no Trabalho). Estes dados podem revelar que boas relações sócio profissionais tendem a aumentar o nível de satisfação e comprometimento organizacional afetivo com a instituição, bem como o aumento do nível de envolvimento desses profissionais com seu trabalho.

GESTÃO DO CONHECIMENTO: UM ESTUDO SOBRE A RELAÇÃO ENTRE A LIDERANÇA TRANSFORMACIONAL, A CONVERSÃO DO CONHECIMENTO E A EFICÁCIA ORGANIZACIONAL

Este estudo teve como objetivo principal analisar a relação entre a Liderança Transformacional, a Conversão do Conhecimento e a Eficácia Organizacional. Foram considerados como pressupostos teóricos conceitos consolidados sobre os temas desta relação, além de recentes pesquisas já realizadas em outros países e contextos organizacionais. Com base nisto identificou-se potencial estudo de um modelo que relacionasse estes três conceitos. Para tal considera-se que as organizações que buscam atingir Vantagem Competitiva e incorporam a Knowledge-Based View possam conquistar diferenciação frente a seus concorrentes. Nesse contexto o conhecimento ganha maior destaque e papel protagonista nestas organizações. Dessa forma criar conhecimento através de seus colaboradores, passa a ser um dos desafios dessas organizações ao passo que sugere melhoria de seus indicadores Econômicos, Sociais, Sistêmicos e Políticos, o que se define por Eficácia Organizacional. Portanto os modos de conversão do conhecimento nas organizações, demonstram relevância, uma vez que se cria e se converte conhecimentos através da interação entre o conhecimento existente de seus colaboradores. Essa conversão do conhecimento ou modelo SECI possui quatro modos que são a Socialização, Externalização, Combinação e Internalização. Nessa perspectiva a liderança nas organizações apresenta-se como um elemento capaz de influenciar seus colaboradores, propiciando maior dinâmica ao modelo SECI de conversão do conhecimento. Se identifica então na liderança do tipo Transformacional, características que possam influenciar colaboradores e entende-se que esta relação entre a Liderança Transformacional e a Conversão do Conhecimento possa ter influência positiva nos indicadores da Eficácia Organizacional. Dessa forma esta pesquisa buscou analisar um modelo que explorasse essa relação entre a liderança do tipo Transformacional, a Conversão do Conhecimento (SECI) e a Eficácia Organizacional. Esta pesquisa teve o caráter quantitativo com coleta de dados através do método survey, obtendo um total de 230 respondentes válidos de diferentes organizações. O instrumento de coleta de dados foi composto por afirmativas relativas ao modelo de relação pesquisado com um total de 44 itens. O perfil de respondentes concentrou-se entre 30 e 39 anos de idade, com a predominância de organizações privadas e de departamentos de TI/Telecom, Docência e Recursos Humanos respectivamente. O tratamento dos dados foi através da Análise Fatorial Exploratória e Modelagem de Equações Estruturais via Partial Least Square Path Modeling (PLS-PM). Como resultado da análise desta pesquisa, as hipóteses puderam ser confirmadas, concluindo que a Liderança Transformacional apresenta influência positiva nos modos de Conversão do Conhecimento e que; a Conversão do Conhecimento influencia positivamente na Eficácia Organizacional. Ainda, concluiu-se que a percepção entre os respondentes não apresenta resultado diferente sobre o modelo desta pesquisa entre quem possui ou não função de liderança.

O princípio da eficiência administrativa na regulação da prestação do serviço de voz sobre internet - VoIP

The present work aims to demonstrate the link of the principle of efficiency - as expressed in the Constitution of 1988, by Constitutional Amendment No. 19 - with regulatory agencies, more specifically the ANATEL (National Telecommunications Agency). It also includes this principle’s importance to regulation - to monitor and manage public services - as well as when an activity will be considered efficient, keeping in mind that agencies are subjected to other principles of public administration. The increasing use of telephony has enabled further development of technologies that provide improvements in the provision of this service. The VoIP (Voice over IP), is nothing more than a technological breakthrough that directly targets the providers of conventional telephone service, both by modifying the business working for a long time with the same technology as the amount of new competitors’ dispute on market share. It also analyses the difficulty of understanding and definition of what is VoIP telephony, its growth and the threats that the traditional and mostly which is ANATEL’s role concerning this telephony technology. As regulator of the telecommunications service, ANATEL not yet regulated the voice telephony service using the IP protocol. What looks over the years is that ANATEL exercise its regulatory function to provide better conditions for competition among providers of VoIP and traditional telephone companies, obviously some difficulties are expected, given that VoIP is a technology that provides two services, through conventional telephony and using the internet.

O papel da violência interpessoal compreendida como a manifestação de uma endemia social: uma análise geográfica sobre o fenômeno no Brasil e Rio Grande do Norte

En Brasil, la violencia interpersonal (homicidios) se ha incrementado de forma significativa, convirtiéndose en una preocupación cada vez mayor en todos los ámbitos políticos de la sociedad. Hoy es uno de los más graves problemas sociales y de salud pública. Se refiere a los problemas sociales, ya que interfiere en la distribución de la oferta de bienes y servicios a los ciudadanos; sino también un problema de salud, porque la violencia es uno de los fenómenos que causan gran impacto en la morbilidad y mortalidad del país, y genera un alto costo para el Sistema Único de Saúde (SUS). Esta es una crisis social, que es el resultado de un mundo capitalista globalizado, que exige a todos sus instrumentos de dominación (dinero, poder y competitividad en estado puro), en virtud del cual la violencia y los conflictos interpersonales se materializan en el territorio. El Río Grande do Norte (RN) ha estado siguiendo esta realidad que es nacional, con el aumento de las tasas de mortalidad por homicidios. En este sentido, este estudio tuvo como objetivo analizar la violencia interpersonal (agresión / homicidio), en Brasil y en el estado del RN, para entender cómo esto afecta a su población, en la morbilidad y mortalidad durante los años 2001 a 2011. Para ambos hicimos uso de método descriptivo / cuantitativo para determinar la magnitud, el tamaño, el perfil de las víctimas y los costos del SUS generados por el problema. Como resultado, podemos diagnosticar que en Brasil, la violencia se ha presentado una nueva dinámica regional, promovida por un proceso de interiorización del fenómeno en todo el país, este proceso de internalización se ha reflejado en la última década, el crecimiento de la violencia en el estado del RN, que ha causado un gran impacto en las tasas de la mortalidad del estado. Acerca la victimización, se puede ver que hay un perfil vulnerable formado por, varón, baja instrucción joven, sola y negro. Con respecto a los datos de morbilidad hospitalaria, la demanda creciente del fenómeno genera costes para el sistema de salud, y las graves consecuencias humanas, como la escalada del miedo y la destrucción de una generación de jóvenes brasileños. Por lo tanto, la falta de una política pública para afrontamiento, prevención y mitigación del problema revela el fracaso de la gestión pública, con consecuencias sociales y de salud, tanto individual como colectivamente.

História oral de vida de pessoas com úlcera venosa nos serviços de atenção primária à saúde

The Chronic Venous insufficiency is characterized as a set of physical changes including how most serious complication of venous ulcers, characterized by irregular and progressive loss of continuity of the skin. The occurrence of venous ulcers in people with chronic venous insufficiency generates dependence on them with health services, with long-term treatments that cause limitations and high-impact changes, affecting their quality of life, affecting the physical, psychological, social, cultural and spiritual as an important public health problem. This study aimed to describe the experience of having a venous ulcer, in the scenario of primary health care services to Health, which includes Primary Care Units and Family Health Strategy in the city of Natal / RN, based on the life histories of users. This is a qualitative study, exploratory and descriptive, with the Oral History of Life as a methodological framework. From the ponto zero was the recruitment of participants who formed the network, totaling six employees, of both sexes and aged between 57 and 79 years. After approval by the Research Ethics Committee - UFRN under the Protocol 653 788/2014 and CAAE 30408014.0.0000.5537 was held data collection, between the months of July and August, through interviews, using identification and characterization of the instrument employees and open questions. Interviews were recorded, transcribed, transcriadas and returned to employees for a conference. The narratives were subjected to Content thematic analysis technique, according to Bardin, allowing the construction of three themes that encompass categories, namely: Axis I - Perspectives on the changes: the impact wound in social relations (changes with ulcer venous, venous ulcer and social and family relationships); Axis II - Brands in body and soul: the story of being hurt (conceptions of the body injured; therapeutic itinerary in primary care services); and Axis III - Reconstruction of being hurt: coping mechanisms (redefinition of the wounded body, resilience to chronic wound). The impact of having a chronic venous ulcer generates impact of physical, psychological and social order. As aspects related to changes after the appearance of venous ulcers, survey participants reported the presence of pain, physical limitations, psychological distress, social and emotional isolation, incapacity, aesthetic discomfort and dependency on health services; the family was the aspect thatshowed no significant change after the occurrence of wound for most participants, an ally in the therapeutic process as a support network. The redefinition of the body and the wound are the main coping mechanism of chronic condition. The services in the Primary Care Network play a fundamental role in the rehabilitation of patients with venous ulcers, although there are difficulties in accessing appropriate treatment and need for expanded services, with permanent professional training of health teams and providing the resources managers to strengthen the comprehensive care of people with venous ulcers in Health Primary Care.

Representações sociais de familiares sobre o atendimento das emergências psiquiátricas

The reformist movements in the field of mental health have pointed battle flags, among which the prioritization of production of mental health care out of the asylum environment should be highlighted, aiming the reduction of psychiatric beds, greater control over the hospitalization, family co-participation and the rescue of the citizenship of the social players involved. With the progressive reduction of asylum beds, associated with a lot of structural problems in the health services, the occurrence of crises outside the hospital environment has been increasingly frequent, thus giving the family an important therapeutic role. In face of this scenario, there is an urgent need to understand the social construction of the care for psychiatric emergencies, identifying the meanings assigned by family members to their constituent aspects. This study seeks to answer the following research question: what are the social representations of family members about the care of psychiatric emergencies in the city of Mossoró, Rio Grande do Norte? Therefore, the aim is to analyze the social representations of family members about the care of psychiatric emergencies in the city of Mossoró, Rio Grande do Norte. This is an exploratory and descriptive study, with a mixed approach, making use of multimethods: for collection, the semi-structured interview and the Technique of Free Association of Words; for data analysis, the Thematic Analysis of Bardin and its steps was used, with the informational support of the softwares ALCESTE (Analyse Lexicale par Contexte d'un Ensemble de Segments de Texte) and Iramuteq (Interface de R pour les Analyses Multidimensionnelles de Textes et de Questionnaires); and the theoretical support of social representations. The study participants totaled 72, and they were selected from the following criteria: older than18 years, with degree of kinship with users suffering from some mental and behavioral disorder, and who have already witnessed a situation of crisis, rescued by the SAMU or other means and taken to the psychiatric hospital or general emergency room. Preliminary results point out: 1.Previous note of the research project with the aim to disseminate it in the scientific community and ensure the intellectual property of the work; 2.The contextual analysis of the care for emergencies in the study place. Reflection about the phenomenon provide a name to the care for the psychiatric emergencies, which is called immediate context; the technical and operational aspects that influence the care, as a specific/ general context; and mental health policies in Brazil are identified as metacontext; 3. The systematic review from randomized clinical trials in the databases PubMed, COCHRANE, LILACS, SciELO and SCIRUS, with the use of the descriptors: ‘Physical restraint’, ‘Psychiatric emergency services’, ‘Restraint’, ‘Physical and Emergency Services’, ‘Psychiatric’. Only one work met the search protocol criteria: a short-term essay that records limited results about the proportion of people who are in restraint and seclusion. It does not show statistically significant results in relation to indications, contraindications and risks of the use of physical restraint; 4. The social representations of the care for psychiatric emergencies. The study results point to the presence of five thematic categories: 1. feeling in the face of the crisis/care; 2. thoughts and perspectives about the crisis/care; 3. centrality of care in the medical- medication-hospitalization triad; 4. the thinking/acting in the face of the use of physical restraint and police force; 5. periodicity of crises. The central core of the representation is in the first category, whilst the peripheral elements are in the third and fifth categories. The contrast zone is in the second and fourth categories. The sadness is the most prominent element of the structure. The social representations about the care for psychiatric crises are at a time of transition between the hegemonic and reformist models, with the traditional aspects being predominant, but already showing peripheral and contrast elements that point to a possible change in the representational field.

Efeito agudo do exercício físico associado a praxias ideomotoras sobre as concentrações séricas de cortisol e memória declarativa em indivíduos com idade entre 51 e 74 anos

Introduction: Several modifications are identified as aging, causing more or less limitation imposed by over the years. Among these, one can highlight the different degrees of cognitive decline, particularly memory that can involve the daily activities and the subject functionality. Studies have shown an association between levels of serum cortisol and stress imposed by the exercise on this. However, there are few studies that references the performance on cognitive aspects of declarative memory and cortisol on the exercise in the water with automatic and práxicos movements and moderate. Objective: Check the effect based on the acute physical exercise and práxicos automatic movements on the performance of visual declarative memory and in serum cortisol in subjects aged between 51 and 74 years. Materials and Methods: It builds a survey characterized as cross with a first sample of 32 physically active subjects aged between 51 and 74 years, divided into two exercise groups (March of Automatic Group - MAG and the March of Praxis Group - MPG). We used a probabilistic and random sampling for sample selection. Used the MMSE (Mini Mental State Examination) to check the general cognitive status, visual acuity test - optotypes chart "E" Rasquin and was even used the declarative visual memory test proposed by Nitrini and collaborators (1994), applying before motor stimulation and immediately after, and the day of blood collection with 2 ml for analysis of cortisol hormone. The normality and homogeneity were verified from the Shapiro-Wilk and Levene tests. Thus we adopted a descriptive statistics to characterize the sample. The Split-Plot ANOVA was used along with the paired t-test to verify the identified differences. We adopted a significance level of p <0.05. Results: It was observed that the groups (MAG and MPG) and the anthropometric variables, perceived exertion, education, cognitive assessment and visual acuity showed no significant differences (p > 0.05), showing that the groups are homogeneous, with variables and similar means. After the stimulation session, lasting 30 min, it was observed that the amount of hits for Δ of declarative memory questionnaire visual images increased, presenting significant for both groups (MAG, p < 0.001; MPG, p = 0.042). The same was observed for cortisol concentration with a reduction in the levels immediately after the stimulus (MAG and MPG, p < 0.001). Conclusion: The results showed that the exercises proposed in its acute effect provide significantly memories of gains and also showed a reduction in cortisol levels.

Qualidade dos serviços hoteleiros: percepções dos turistas de negócios de Teresina-PI

Business tourism is one of tourist segments with different market characteristics in relation to others segmentations, such as low seasonality, there is no requirement of natural attractions, it serves as destination projection and it generates profitable larger numbers. Due to the context around business travels, the hotel so many times has a fundamental whole among the elements of the production chain in this segmentation. Business tourism in Teresina is the primary segmentation of the capital, since it represents almost 70% of hotel demand; hence this research has as objective to evaluate through the perceptions of business travelers, the level of quality services of hotels of Teresina. The research is exploratory and descriptive, of functionalist character. This study is characterized by qualitative and quantitative research, supported by a basis of methodological pluralism. For primary data collection was performed applying a suitable research instrument of SERVPERF model (Service Performance). The universe of this study were Teresina's accommodations, restricted to only those that fit in hotel category and it was inside metropolitan area of Teresina. The study subjects were business travelers who were hosted in these hotels. For the analysis, it was considered certain factors: descriptive analysis, factor analysis, correlation matrix analysis of the variables; It was still compiling a graphic of lexicons obtained in the survey about respondent's the notion of quality of vision in the hotel service; Finally, qualitative analysis was based on the theories of marketing, targeting and quality of tourism services applied. The results show that the Teresina hotel service is on a regular average, especially for Reliability and Safety dimensions were highlighted. Whereas, the factor analysis showed the emergence of two factors to explain "Empathy" dimension, one of this is about the organization and the other one is about consumer. And by Lexicometria was possible to observe the importance to the customer of other variables such as: personal aspects, price and location for this tour segmentation.

Avaliação do acesso aos serviços de reabilitação física para vítimas de acidentes de trânsito: caminhos para melhoria da qualidade do sistema de saúde

The Physical Rehabilitation services (PR) are of fundamental importance in combating the global epidemic of Traffic Accidents (TA). Considering the numerous physical and social consequences of the survivors, quality problems in access to PR are a hazard to recovery of victims. It is necessary to improve the management of quality of services, assessing priority dimensions and intervening in their causes, to ensure rehabilitation available in time and suitable conditions. This study aimed to identify barriers to access to rehabilitation considering the perception of TA victims and professionals. The aim is also to estimate the access to rehabilitation and their associated factors. This is a qualitative and quantitative study of exploratory nature developed in Natal / RN with semi-structured interviews with 19 health professionals and telephone survey to 155 victims of traffic accidents. To explore barriers to access the speeches were transcribed and analyzed using the Alceste software (version 4.9). During the interviews used the following guiding question: “What barriers hinder or prevent access to physical rehabilitation for victims of traffic accidents?”. The names of classes and axes resulting from Alceste was performed by ad hoc query to three external researchers with subsequent consensus of the most representative name of analysis. We conducted multivariate analysis of the influence of the variables of the accident, sociodemographic, clinical and assistance on access to rehabilitation. Associations with p <0.20 in the bivariate analysis were submitted to logistic regression, step by step, with p <0.05 and confidence interval (CI) of 95%. The main barriers identified were: “Bureaucratic regulation”, “Long time to start rehabilitation”, “No post-surgery referral” and “inefficiency of public services”. These barriers were divided into a theoretical model built from the cause-effect diagram, in which we observed that insufficient access to rehabilitation is the product of causes related to organizational structure, work processes, professional and patients. Was constructed two logistic regression models: “General access to rehabilitation” and “Access to rehabilitation to public service”. 51.6% of patients had access to rehabilitation, and 32.9% in public and 17.9% in the private sector. The regression model “General access to rehabilitation” included the variables Income (OR:3.7), Informal Employment (OR:0.11), Unemployment (OR:0.15), Perceived Need for PR (OR:10) and Referral (OR: 27.5). The model “Access to rehabilitation in the public service” was represented by the “Referral to Public Service” (OR: 23.0) and “Private Health Plan” (OR: 0.07). Despite the known influence of social determinants on access to health services, a situation difficult to control by the public administration, this study found that the organizational and bureaucratic procedures established in health care greatly determine access to rehabilitation. Access difficulties show the seriousness of the problem and the factors suggest the need for improvements in comprehensive care for TA survivors and avoid unnecessary prolongation of the suffering of the victims of this epidemic.

Telessaúde como ferramenta de apoio à atenção primária à saúde: um olhar sobre as teleconsultorias em cardiologia

In order to qualify Primary Health Care in Brazil, the Ministry of Health implemented the Brazilian Telehealth Program to provide health support (telecare) and permanent health education (tele-education). In this respect, one of the primary services offered is teleconsultation. As part of the national expansion of the program, a local Telehealth Center, called Telehealth/RN, was created in Rio Grande do Norte state. The aim of this study was to describe the implementation of cardiological teleconsultations at Telehealth/RN, and analyze the characteristics of the teleconsultations in cardiology requested. Formative Second Opinions in cardiology, available at the web site of the Brazilian Telehealth Program, were also examined. This is a quantitative study with a descriptive, observational design. A total of 56 Formative Second Opinions in cardiology were identified, a majority related to hypertension (29%), focused on treatment support (30%), and requested by doctors (59%). At Telehealth/RN, 47 teleconsultations in cardiology were carried out, a majority also related to hypertension (50%), requested by community health workers (45%) and focused directly on treatment (52%). Cardiological teleconsultation, implemented at the Telehealth/RN in April 2014, is a practical and efficient strategy capable of ensuring health services and reaching those who live in remote areas. Knowing the demand for teleconsultations is extremely important, given that they provide the information needed to correct existing inadequacies related to care, management and/or education, as well as providing the basis for public policies that meet the demands of teleconsultation.

Conversações políticas no youtube: junho de 2013 e circulação de sentidos nos comentários do vídeo “globo e os protestos”

This re search analyzes the talks dynamics about policy established in YouTube symbolic space. We are interested in examining the way in which the commentators of the video " Globo e os Protestos " articulated in the field intended for comments, a public space directed to the dissemination and circulation of meanings about policy issues. The video studied was published by PC Siqueira and Diego Quint eiro , during the June 2013 protests in Br azil, to direct the political understanding of the movement lived in that period. According to them, the protests had left political position and therefore the protesters should reject the coverage by TV Globo (a comunication vehicle with ideals of right) and allow the participation of political parties linked to the ideological left spectrum. This narrative generated empathy and controversy betwe en commentators, which produced in the comments, an intense argumentative process about these theses (right and left). To understand the phenomenon, we conducted an exploratory qualitative research, the main methodological procedure was a ethnomethodological discourse analysis. We seek the observation of the ways in which the commentators es tablished talks about politics in the comments space, for, thereafter , organize categories of analysis based on identified discursive recurrences. The empirical reflections are supported from discussions about the YouTube potential, while digital media com prising massive strategies and while articulating space in the engagement of individuals in political issues; also confront the aspects involved in the conversation practices that results in sociability dynamics and , especially , in conflict, on the socio - t echnical networks; and finally, we propose a reflection about the circuit actuation in which the people take ownership and realize new readings about the products received. Concluding that the use of digital media , such as YouTube, has caused significant c hanges in the forms of production and reception of symbolic products and ways in which people participate in political issues concerning life in society.

Estudo sobre a relação entre a atividade geomagnética e cintilações de sinais de GPS em Natal-RN (Brasil)

To identify the relationship between GPS scintillation in Natal-RN (Brazil) and geomagnetic disturbances of any intensities and variations, this work made analysis of the ionospheric behavior and magnetic indexes (Dst , AE and Bz of the interplanetary magnetic field) concerning to different periods of the solar cycle between 2000 and 2014. Part of the data of this research originated at the UFRN observatory, from a GEC Plessey board connected to an ANP -C 114 antenna, modified by Cornell University’s Space group Plasma Physics in order to operate the ScintMon, a GPS monitoring program. This study, therefore, found several cases of inhibited scintillations after the main phase of magnetic storms, a fact that, along with others, corroborated with categorization of Aarons (1991) and models of disturbed dynamo (according to Bonelli, 2008) and over-shielding penetration, defended by Kelley et al. (1979) and Abdu (2011) [4]. In addition to these findings, different morphologies were noted in such disruptions in the GPS signal in accordance with previous magnetic activities. It also found a moderate relationship (R2 = 0.52) between the Dst rate (concerning to specific time) and the average of S4 through a polynomial function. This finding therefore, corroborating Ilma et al. (2012) [17], is an important evidence that the scintillation GPS are not directly controlled by magnetic induction of storms. Completing this work, this relation did show itself as a way of partial predicting of scintillations.

Relação entre a biodiversidade de plantas e os serviços do ecossistema na caatinga

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Um estudo sobre a variabilidade do vento no nordeste do Brasil através de métodos estatísticos e via modelos dinâmicos de meso e micro escala

The objective of this study was to determine the seasonal and interannual variability and calculate the trends of wind speed in NEB and then validate the mesoscale numerical model for after engage with the microscale numerical model in order to get the wind resource at some locations in the NEB. For this we use two data sets of wind speed (weather stations and anemometric towers) and two dynamic models; one of mesoscale and another of microscale. We use statistical tools to evaluate and validate the data obtained. The simulations of the dynamic mesoscale model were made using data assimilation methods (Newtonian Relaxation and Kalman filter). The main results show: (i) Five homogeneous groups of wind speed in the NEB with higher values in winter and spring and with lower in summer and fall; (ii) The interannual variability of the wind speed in some groups stood out with higher values; (iii) The large-scale circulation modified by the El Niño and La Niña intensified wind speed for the groups with higher values; (iv) The trend analysis showed more significant negative values for G3, G4 and G5 in all seasons and in the annual average; (v) The performance of dynamic mesoscale model showed smaller errors in the locations Paracuru and São João and major errors were observed in Triunfo; (vi) Application of the Kalman filter significantly reduce the systematic errors shown in the simulations of the dynamic mesoscale model; (vii) The wind resource indicate that Paracuru and Triunfo are favorable areas for the generation of energy, and the coupling technique after validation showed better results for Paracuru. We conclude that the objective was achieved, making it possible to identify trends in homogeneous groups of wind behavior, and to evaluate the quality of both simulations with the dynamic model of mesoscale and microscale to answer questions as necessary before planning research projects in Wind-Energy area in the NEB