Formação de professores no Pibid: a utilização da charge no ensino

Anais do II Seminário Seminário Estadual PIBID do Paraná: tecendo saberes / organizado por Dulcyene Maria Ribeiro e Catarina Costa Fernandes — Foz do Iguaçu: Unioeste; Unila, 2014Este trabalho é fruto das experiências vivenciadas no Programa Institucional de Bolsas de Iniciação à Docência (PIBID), do curso de Geografia, da Universidade Estadual de Londrina/UEL. O objetivo frente ao projeto, desenvolvido por bolsistas do PIBID, foi dinamizar o debate sobre os impactos, no território brasileiro, após a FIFA WORLD CUP BRAZIL 2014. Como metodologias da ação docente foram usadas charges para abordar a dicotomia entre países subdesenvolvidos e desenvolvidos, além dos aspectos econômico-sociais dos países que sediaram copas anteriormente e os impactos em seus territórios. Dessa forma, foram lançadas as bases para se refletir sobre os problemas sociais da sociedade brasileira, frente ao momento em que o país sediou a Copa do Mundo 2014. O público alvo deste projeto foram os alunos do oitavo ano de uma escola da rede pública em Cambé, a fim de construir uma visão mais crítica sobre os impactos do megaevent

SMEs Adoption of SaaS Cloud Services:A Novel Ontological Framework(Nigeria as a case Study).

The future of Information Technology lies in cloud computing, whose primary objective is to reduce the cost of IT services while increasing production output, availability, reliability, flexibility as well as a decrease in processing time. Owing to few exploratory studies that explain the adoption of cloud services, this research tends to understand the factors affecting cloud service adoption decision by SMEs in Nigeria. Also, it proposes a solution based framework to tackle the identified factors in view of promoting cloud service adoption by Nigerian SMEs. In view of the above, this thesis investigates the reason for slow adoption of cloud services with specific emphasis on Nigeria SMEs. Firstly, the existing literature in cloud service adoption by SME is examined based on Systematic Literature Review (SLR) method. This helps to inform the research gap in relation to cloud service adoption technique. Secondly, the thesis uses a mixed method approach integrating quantitative and qualitative methods to gather data through four stages of data gathering approach. The primary data gathering is based on quantitative (survey) stage 1 and qualitative (Focus Group) stage 2, which involves the studies identifying the cloud service adoption challenges specific to Nigeria SMEs. Furthermore, a solution framework CLOUDSME which includes an ontologically developed Decision Support System(DSS) is proposed to tackle the challenge identified in Primary data gathering stage 1and 2. The proposed framework consists of four phases: The first phase deals with gathering information on how various cloud services address dynamic SME user requirements identified in the primary data gathering stage, this phase forms the building block through which the framework is built upon. The second phase which is the prioritisation phase Adopts Analytical Hierarchical Process (AHP) approach to deal with the issue of complex comparison, also the third stage of data gathering (quantitative) is performed whereby a group interview is carried-out to compare and assign weights to service provider offering in addressing user requirements using pairwise comparison scale. The Third phase addressing the issue of cloud service ranking. In this phase, the major contribution of this research is introduced, whereby a new formalism is proposed using rational relationships to tackle the issue of rank reversal associated with the traditional AHP approach. The fourth phase of the framework is the development of the ontological proposed DSS which comprises of the information gathered in phase 1, 2 and 3. The proposed DSS promotes cloud service Knowledge management, service recommendation and service ranking toward cloud service adoption decision making by SME managers. The final stage of the research is the validation phase which comprises of construct validation. As well as user opinion and expert opinion and researcher opinion validation based on a survey (Quantitative) which makes up the fourth stage of the data gathering stages. The findings from the user opinion evaluation and validation prove the CLOUDSME has the capability to tackle the slow adoption of cloud services by Nigeria SMEs

EXFOR-based simultaneous evaluation for fast neutron-induced fission cross section of thorium-232

The $^{232}$Th neutron-induced fission cross section was evaluated from 500 keV to 200 MeV. The experimental $^{232}$Th fission cross sections and their ratios to the $^{235,238}$U fission cross sections in the EXFOR library were reviewed and analysed by the least-squares method. The newly published $^{232}$Th/$^{235}$U fission cross section ratios from the time-of-flight measurements at the CERN n_TOF and CSNS Back-n facilities were compiled in EXFOR. Additional simultaneous evaluation was performed by including the experimental $^{233,238}$U and $^{239,240,241}$Pu fission cross sections and their ratios. The new evaluation provides the $^{232}$Th fission cross section systematically lower than the JENDL-5 cross section. The reduction is 4% in the plateau region between 2 and 6 MeV and more significant in the subthreshold fission region. The present evaluation reduces the $^{232}$Th fission cross section averaged over the $^{252}$Cf spontaneous fission neutron spectrum from the JENDL-5 evaluation by 4%, which is closer to the other general purpose libraries but underestimates Grundl et al's measurement by 11%.Comment: Submitted to Journal of Nuclear Science and Technolog

Results of time-of-flight transmission measurements for 197Au at a 50 m station of GELINA

Transmission measurements have been performed at the time-of-flight facility GELINA to determine the total cross section for neutron induced reactions in 197Au. The measurements have been carried out at a 50 m transmission station of GELINA with the accelerator operating at 800 Hz. This report provides the experimental details required to deliver the data to the EXFOR data library which is maintained by the Nuclear Data Section of the IAEA and the Nuclear Energy Agency of the OECD. The experimental conditions and data reduction procedures are described. In addition, the full covariance information based on the AGS concept is given such that nuclear reaction model parameters together with their covariances can be derived in a least squares adjustment to the data.JRC.D.4-Standards for Nuclear Safety, Security and Safeguard

Perception and Utilization of Healthcare Services among SS 2 Students in Jos North Local Government Area of Plateau State, Nigeria

This research work was carried out to investigate the perception and utilization of healthcare services among SS 2 students in Jos North LGA of Plateau State. The research was conducted using cross- sectional survey research method through structured questionnaire which were administered to two hundred SS 2 students who served as the respondents. The data collected from the respondents was analyzed using simple frequency and percentage method. The result revealed that 177 (88.5%) respondents perceived healthcare services to be relevant to the health and wellbeing of an individual, 170 (85%) said that healthcare  provides both preventive and curative services, 134 (67%) perceived healthcare services to be expensive and 124 (62%) agreed that most doctors and nurses have negative attitude towards their patients. Based on the findings, it was revealed that the level of utilization of health services among SS 2 students is low- 110 (55%) and health services are lacking in most schools- 91(45.5%). The result also revealed that schools management had a negative attitude towards health services- 133 (66.5%). Based on findings, it was recommended that the government and stakeholders should subsidize the cost of health services and improve primary health centers in order to increase utilization. School management should create adequate time for students to access and utilize health services in the school clinic. Also, the school management should provide adequate health services and partner with health agencies and workers to periodically evaluate students’ health

Re-Hardening of Hadron Transverse Mass Spectra in Relativistic Heavy-Ion Collisions

We analyze the spectra of pions and protons in heavy-ion collisions at relativistic energies from 2 A GeV to 65+65 A GeV by using a jet-implemented hadron-string cascade model. In this energy region, hadron transverse mass spectra first show softening until SPS energies, and re-hardening may emerge at RHIC energies. Since hadronic matter is expected to show only softening at higher energy densities, this re-hardening of spectra can be interpreted as a good signature of the quark-gluon plasma formation.Comment: 10 pages, 3 figures, 1 table, Poster presentation at QM2001, Revised to correct latex error in citation on April 6, 200

Variabilidade temporal em curta escala da clorofila a e composição de fitoplâncton em área rasa do estuário da Lagoa dos Patos (Sul do Brasil)

A variabilidade temporal em curta escala de clorofila a, abundância e composição de ftoplâncton e ciliados e de fatores abióticos foram analisados no estuário da Lagoa dos Patos durante dois períodos, o primeiro na primavera (Outubro/Novembro 2004) e o segundo no verão (Janeiro/Fevereiro 2005). As amostragens foram realizadas em uma estação fixa, a cada 2h30min para as análises de clorofila a, salinidade, temperatura, transparência da água, velocidade e direção da corrente e, uma vez ao dia, para as de fitoplâncton e ciliados, seston e nutrientes inorgânicos dissolvidos. Na primavera, a direção do vento variou em intervalos de aproximadamente dois dias, e a precipitação pluviométrica foi elevada (212.9 mm), enquanto que no período de verão a direção do vento variou menos, aproximadamente a cada cinco dias, e a precipitação pluviométrica foi menor (32.5 mm). A ação da precipitação pluviométrica e direção do vento controlaram a temperatura, salinidade, ransparência da água e clorofila a na área rasa do estuário, associados com ciclos mais curtos na primavera do que no verão. O teor dos nutrientes inorgânicos dissolvidos foi diferente nos dois períodos, com o silicato mais alto na primavera (média 108 μM) do que no verão (média 69 μM), e nitrato e amônia, como os principais elementos nitrogenados na primavera e no verão, respectivamente. A presença de espécies lacustres e marinhas na área de estudo esteve associada à relação entre o vento e salinidade, com ventos de Sul favorecendo a entrada de diatomáceas e de dinoflagelados marinhos e, de Nordeste, associados com a descarga de água doce, contendo cianobactérias e clorófitas. A resposta da salinidade e da assembléia planctônica à ação do vento foi mais rápida (escala de horas) na primavera do que no verão (3-4 dias). Foi evidenciado que, processos de alta freqüência mediados pelo vento, gerando flutuações na descarga de água doce, em período similar ao da taxa de divisão celular, 1-2 dias, são de grande importância na ecologia da laguna. As variações no fluxo de água doce, associadas com a direção do vento, controlam a acumulação da clorofila a na área de estudo, podendo impedir, atrasar ou favorecer o início da floração de diatomáceas na primavera. No verão, processos herbívoros pelágicos e bentônicos aparentemente têm um importante papel no controle da biomassa do fitoplâncton.Short-term variability of chlorophyll a concentration, abundance and composition of phytoplankton and ciliates and of abiotic parameters were analyzed at the Patos Lagoon estuary during two seasons, in the austral spring (October/November 2004) and summer (January/February 2005). Sampling was carried out at a fixed station every 2h30min for chlorophyll a, salinity, water temperature, transparency, water flow velocity and direction and, once a day, for phytoplankton and ciliates, seston and dissolved inorganic nutrients analysis. In austral spring, wind direction changed approximately every two days between northerly and southerly, and rainfall was high (212.9 mm), while in the summer period the wind direction changed less, approximately every five days, and rainfall was low (32.5 mm). The action of rainfall and wind direction fluctuation controlled temperature, salinity, water transparency and chlorophyll a, associated with shorter cycles in the spring than in the summer periods. The concentration of inorganic nutrients also differed, silicate was high in the spring (mean 108 μM) compared to the summer (mean 69 μM) period, and the main nitrogen source in spring and summer was nitrate and ammonia, respectively. The presence of freshwater and marine species in the study area was typically a wind-salinity response, with southerly wind inducing the inflow of marine diatoms and dinoflagellates, and NE wind leading to water discharge containing freshwater cyanobacteria and chlorophytes. The time lag of the wind action on the salinity-biotic response was generally short (hour scale) but may be delayed with low rainfall as it was observed in summer. It was shown that high frequency processes, in the same period of celldivision, 1-2 days, are of primary importance for the lagoon ecology. The fluctuation of freshwater outflow and wind driven processes may prevent, delay or prompt phytoplankton biomass accumulation in the estuarine area, acting as the timing mechanism of the diatom spring bloom. In summer, the increased benthic and pelagic herbivore activity apparently acted as an important chlorophyll a control typical of top-down processes

Experimental uncertainty and covariance information in EXFOR library

Compilation of experimental uncertainty and covariance information in the EXFOR Library is discussed. Following the presentation of a brief history of information provided in the EXFOR Library, the current EXFOR Formats and their limitations are reviewed. Proposed extensions for neutron-induced reaction cross sections in the fast neutron region and resonance region are also presented.JRC.D.4-Standards for Nuclear Safety, Security and Safeguard