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Search Results: 1 - 10 of 20179 matches for " Nilza Costa "
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Impact evaluation of the Masters Courses on the Science Teachers’ professional practices – best practices examples
Lúcia Pombo,Nilza Costa
Investiga??es em Ensino de Ciências , 2009,
Abstract: This study intends to (i) evaluate the impact of the Master Courses’ attendance on the professional practices of Science teachers, in Portugal, (ii) to disseminate examples of good practices of teaching with a strong impact on the Master Course (MC), and (iii) to present suggestions to improve the articulation between Training, Research and Practices, in the post-graduation context. Semi-structured interviews were made to 5 Biology/Geology Master Teachers (MT) of primary or secondary education. Two of this 5 MT were deepened studied as examples of good practices through classes’ observation and documental analysis. There were evidences of strong impact of the MC in all interviewed teachers, mainly in the classroom level, as the impact on peers was only evidenced by the two case studies. It is suggested that collaborative practices, involving teachers and researchers, namely as a result of post-graduation contexts, would promote the changing of the existent teachers’ practices.
Da incoerência burocrática à eficácia de um dispositivo de supervis?o/forma??o: estudo do desenvolvimento profissional numa situa??o de indu??o
Rold?o, Maria do Céu;Reis, Pedro;Costa, Nilza;
Ensaio: Avalia??o e Políticas Públicas em Educa??o , 2012, DOI: 10.1590/S0104-40362012000300002
Abstract: university of aveiro and the ministry of education established a partnership in 2009-2010 in order to have a group of researches supporting, evaluating and investigating the first year of implementation of the probation period, required in portugal to get a permanent teaching position (psaappp). in this paper results of the research developed are presented focusing the formative strategy that was implemented, the perceived outcomes and processes, and the perceptions of the participants. thus paper the whole program is presented, articulating the objectives of each article within this thematic folder, and establishing its coherence with the theoretical field of supervision, professional development and induction.
Effects of radio-opacifier addition in dental impression material
Mota Eduardo,Rigo Angela,Rockenbach Maria,da Costa Nilza
Indian Journal of Dental Research , 2010,
Abstract: Objective: The aim of this in vitro study was to determine the effects of barium sulfate addition in two dental impression materials previously proved as radiolucent. Materials and Methods: An irreversible hydrocolloid (IH) and polyether (PE) were tested for optical density, linear dimension stability and detail reproduction. Statistical Analysis Used: The optical density data were submitted to Kolmogorov-Smirnov normality test and compared with two-way ANOVA and Tukey (alpha=0.05). Results: The results of optical density (pixel) were: IH control 45.24 f (±7.6), PE control 54.93 e (±4.45), PE 5Wt% 60.43 d (±6.27), IH 1Wt% 61.54 cd (±5.3), PE 1Wt% 66.9 bc (±5.05), IH 5Wt% 67.17 b (±6.01), PE 10Wt% 84.55 a (±5.14), IH 10Wt% 85.33 a (±5.53). On detail reproduction, polyether control was able to copy the 6 μm line. Adding 1 or 5Wt% of barium sulfate have not change this characteristic. For the irreversible hydrocolloid, the control group was able to copy a line with 14 μm, however, adding 1Wt% barium sulfate, the capability decreased to 22 μm. Adding barium sulfate in the polyether promoted an increase in between the copied lines, for the control, the average distance was 931.6 μm, 936 μm to 1Wt% and 954.5 μm to 5 Wt%. For the IH, the control presented 975 μm in comparison to 987.25 μm for 1 Wt% samples. Conclusion: The addition of barium sulfate was capable of increasing significantly the optical density of tested material, have changed the linear dimension stability, however, have not interfered in detail reproduction only for PE.
Da incoerência burocrática à eficácia de um dispositivo de supervis o/forma o: estudo do desenvolvimento profissional numa situa o de indu o De la incoherencia burocrática a la eficacia de un dispositivo de supervisión / formación: estudio del desarrollo profesional en una situación de inducción From the bureaucratic incoherence to the efficiency of a mechanism of supervision/formation
Maria do Céu Rold?o,Pedro Reis,Nilza Costa
Ensaio: Avalia??o e Políticas Públicas em Educa??o , 2012,
Abstract: No ano letivo de 2009-2010, a Universidade de Aveiro e o Ministério da Educa o de Portugal estabeleceram um convénio para que uma equipe de investigadores coordenada pela Universidade supervisionasse, acompanhasse e investigasse o primeiro ano de implementa o do ano probatório, dispositivo requerido para aceder à carreira docente em Portugal - o Programa de Supervis o, Apoio e Acompanhamento do Período Probatório de Professores (PSAAPPP). Da investiga o produzida sobre os processos formativos, os resultados obtidos e as percep es dos intervenientes se dá conta no dossiê temático que integra este número da revista. Neste artigo situa-se a globalidade e contexto do Programa, a lógica que articula os diferentes artigos e o seu enquadramento no campo teórico da indu o, da supervis o e do desenvolvimento profissional dos docentes. En el a o escolar 2009-2010, la Universidad de Aveiro y el Ministerio de Educación de Portugal establecieron un convenio para que un equipo de investigadores coordinado por la Universidad supervisara, acompa ara e investigara la primera experiencia anual probatoria, dispositivo necesario para ingresar a la carrera docente en Portugal - originándose así el Programa de Supervisión, Apoyo y Acompa amiento del Período Probatorio de Profesores (PSAAPPP). En el informe temático que integra este número de la revista se presenta la investigación producida sobre los procesos formativos, los resultados obtenidos y las percepciones de los participantes. En este artículo se ubica la globalidad y el contexto del Programa, la lógica que articula los diferentes artículos y su línea teórica en el campo de la inducción, también la supervisión y el desarrollo profesional de los docentes. University of Aveiro and the Ministry of Education established a partnership in 2009-2010 in order to have a group of researches supporting, evaluating and investigating the first year of implementation of the Probation Period, required in Portugal to get a permanent teaching position (PSAAPPP). In this paper results of the research developed are presented focusing the formative strategy that was implemented, the perceived outcomes and processes, and the perceptions of the participants. Thus paper the whole Program is presented, articulating the objectives of each article within this thematic folder, and establishing its coherence with the theoretical field of supervision, professional development and induction.
Avalia??o de volumes de calda proporcionados por diferentes pontas de pulveriza??o no controle de Tuta absoluta (Meirick, 1917) (Lepidoptera: Gelechiidae) em tomate rasteiro
Iost, Cristina Abi Rached;Ferreira, Marcelo da Costa;Martinelli, Nilza Maria;Maccagnan, Douglas Henrique Bottura;
Acta Scientiarum. Agronomy , 2008, DOI: 10.4025/actasciagron.v30i5.5961
Abstract: the aim of this work was to evaluate the control of tuta absoluta with different application volumes in field tomato. the evaluation of pest level infestation was performed recording the number of pinworms, lesions with or without live pinworms, and the number of eggs on tomato leaves and fruits. the treatments were: tj6011002 (200 l ha-1 ), tj6011004 (600 l ha-1 ), tx04vk (200 l ha-1 ), tx12vk (600 l ha-1 ) and a knapsack sprayer (100 l ha-1 ); they were all applied with and without adjuvant. a pest check without application was included. chlorfluazuron was used at the dosage of 100 ml 100 l-1 . no significative differences were observed among treatments with or without adjuvant and the check. however, significant differences were observed between nozzles. the lowest lesion incidence was observed in the treatment with nozzle tj6011004 (600 l ha-1 ) and significant differences with or without adjuvant were observed with nozzle tj6011002 (200 l ha-1 ). this study demonstrated the importance of monitoring in pest control.
Balan?o do programa de supervis?o, apoio, acompanhamento e avalia??o ao período probatório em Portugal: dos eixos de interven??o a uma vis?o prospetiva
Rold?o, Maria do Céu;Reis, Pedro Rocha dos;Costa, Nilza;
Ensaio: Avalia??o e Políticas Públicas em Educa??o , 2012, DOI: 10.1590/S0104-40362012000300007
Abstract: this paper presents a global analysis of the impact of the probation period - required in portugal to acceed to a permanent teaching position (psaappp) - regarding its major intervention axis - supervision, teacher professional development and collaboration.
Preload and torque removal evaluation of three different abutment screws for single standing implant restorations
Stüker, Rafael Augusto;Teixeira, Eduardo Rolim;Beck, Jo?o Carlos Pinheiro;Costa, Nilza Pereira da;
Journal of Applied Oral Science , 2008, DOI: 10.1590/S1678-77572008000100011
Abstract: several authors still consider the mechanical problems of fracture and component loosening as the main causes of failure of implant-supported restorations. the purpose of this in vitro study was to compare the preload of three types of screw for transmucosal abutment attachment used in single implant-supported prosthesis through strain gauge and removal torque measurements. three external hex fixtures were used, and each received a transmucosal abutment (cera one?), which was fixed to the implant with its respective screw: group a- gold screw, group b- titanium screw and group c- surface-treated titanium screw (ti-tite?). ten screws of each type were attached applying a 30.07±0.28 ncm torque force and maintained in position for 5 minutes. after this, the preload values were measured using strain gauges and a measurement cell. gold screws presented higher preload values (131.72±8.98 n), followed by surface-treated titanium screws (97.78±4.68 n) and titanium screws (37.03±5.69 n). anova (p<0.05) and tukey's test (p<0.05) were applied. statistically significant differences were found among the groups for both preload and removal torque values. in conclusion, gold screws may be indicated to achieve superior longevity of the abutment-implant connection and, consequently, prosthetic restoration due to greater preload values yielded.
Influence of soft tissues on mandibular gray scale levels
Souza, Paulo Henrique Couto;Costa, Nilza Pereira da;Veeck, Elaine Bauer;
Brazilian Oral Research , 2004, DOI: 10.1590/S1806-83242004000100008
Abstract: the purpose of this study was to analyze the gray levels, expressed in pixels, of the mandibular retromolar region, with regard to the influence of muscular and fat soft tissues near this region. fifteen dry mandibles were x-rayed with the presence of soft tissue simulators. the radiographs were digitized and evaluated by digora? software. a one cm thick layer of wax was used as a simulator of the muscular soft tissue. animal fat samples of different thicknesses - 0.5, 1.0, 1.5 and 2.0 cm - were used as a simulator of the fat soft tissue. results showed that the fat soft tissue simulator influenced the gray level values in pixels of the mandibular retromolar region when analyzed in different thicknesses using the digora? digitized image software.
Impacto do currículo português das ciências físicas e naturais nas práticas docentes
Martins, Idalina;Abelha, Marta;Costa, Nilza;Rold?o, Maria do Céu;
Ciência & Educa??o (Bauru) , 2011, DOI: 10.1590/S1516-73132011000400001
Abstract: this paper intends to disseminate the results of a study whose main aim was to understand the impact of the basic education curricular reorganisation for the curricular practices and collaboration dynamics of natural and physical sciences teachers. the empirical study adopted a quantitative approach and the results report on 1122 questionnaires completed by natural and physical sciences teachers. to deepen these results, we collected qualitative data, obtained from interviews with six natural and physical sciences teachers who participated in the first part of the study. the results obtained suggest a superficial appropriation of the central concepts concerning current education discourse and indicate that the implementation of the basic education curriculum in portugal doesn't produce effective changes in teachers' practices. we consider this requires essential and concerted action between teachers, education institutes and central administration.
Measurement of the optical density of packable composites: comparison between direct and indirect digital systems
Graziottin, Luiz Felipe Rodrigues;Costa, Nilza Pereira da;Silveira, Ivori Dutra da;Veeck, Elaine Bauer;
Pesquisa Odontológica Brasileira , 2002, DOI: 10.1590/S1517-74912002000400004
Abstract: the aim of this study was to measure the optical density of four packable composite resins with widths of 1, 2, 3 and 4 mm, by means of digora? (direct) and dentscan dentview? (indirect) digital imaging systems, in order to compare both methods. twenty acrylic plates, with the proposed thicknesses, were used, each one containing a sample of each resin. each acrylic plate was radiographed three times, under a standardized technique. for the digora? system, an optical plate was used under each resin sample, and, for the dentscan dentview? system, occlusal films were employed, totalizing 60 exposures for each system. optical plates and films were scanned and three consecutive optical readouts were carried out, totalizing 1,440 readouts. the results were submitted to statistical analysis and revealed that the average optical density of the four resins always increased as thickness increased. regarding the comparisons between the composite resins, in both analysis the resin with the greater optical density was surefil? followed by prodigy? condensable, alert? and solitaire?. the correlations between the results of digora? and dentscan dentview? were significant for the different thicknesses and materials. the observed tendency is that as the values obtained with the digora? system increase, so do the values obtained with dentscan dentview?. while thickness increased, the values of optical density in both digora? and dentscan dentview? tended to approach each other. the digora? system presented smaller amplitude between the results obtained in adjacent thicknesses.
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