Página 1 dos resultados de 545 itens digitais encontrados em 0.012 segundos

A calculadora como ferramenta de aprendizagem

Oliveira, Edvaldo Fialho de
Fonte: Universidade Estadual Paulista (UNESP) Publicador: Universidade Estadual Paulista (UNESP)
Tipo: Trabalho de Conclusão de Curso
Português
Relevância na Pesquisa
27.323442%
This paper talks about the importance of the calculator as an aid to student learning, being a powerful educational tool when used properly by the teachers. It‟s also exposed some issues related to the calculator to better understand concepts that help the student learning. As a last activity there is an applied research with Math Teachers at Ana Fausta de Moraes school in Guaratinguetá town, SP, in order to expose the reality about the use of the calculator as a teaching resource; Este trabalho trata da importância da calculadora como um auxílio à aprendizagem dos alunos, sendo uma poderosa ferramenta educacional quando utilizada de maneira adequada pelos docentes. Também são expostos alguns tópicos referentes à calculadora, visando compreender melhor conceitos que ajudem no que se refere à aprendizagem do aluno. Como última atividade existe uma pesquisa aplicada com professores de Matemática na Escola Ana Fausta de Moraes, da cidade de Guaratinguetá, com a finalidade de expor a realidade acerca do uso da calculadora como recurso didático

A teacher education experiment to challenge conceptions and practices

Ponte, João Pedro da; Mercê, Célia
Fonte: Universidade de Lisboa Publicador: Universidade de Lisboa
Tipo: Artigo de Revista Científica
Publicado em //2011 Português
Relevância na Pesquisa
27.517063%
This study describes a teacher education experience with grade 5-6 teachers, based on a calculator module within a national program for mathematics in-service teacher education. The aim was to challenge the teachers’ conceptions about the role of the calculator in mathematics teaching and to promote their reflection about professional practices. The research methodology was qualitative and interpretive, with data collection through interviews and observation of teacher education and classroom supervision sessions as well as analysis of teachers’ portfolios. The results indicate that some teachers are clearly against the use of the calculator in the mathematics classroom, others allow students to use it in a passive way, and others are very affirmative about its use. The teachers who argue against the use of the calculator seem to predominate, suggesting a great distance between the curriculum orientations and classroom practice. The methodology of the course, combining collective sessions and individual classroom supervision proved to be fruitful, providing new information, practice and discussion that allowed teachers to analyze different kinds of tasks in which the calculator may be useful, experiment using then in the classroom...

Cost calculator methods for estimating casework time in child welfare services: A promising approach for use in implementation of evidence-based practices and other service innovations

Holmes, Lisa; Landsverk, John; Ward, Harriet; Rolls-Reutz, Jennifer; Saldana, Lisa; Wulczyn, Fred; Chamberlain, Patricia
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
27.517063%
Estimating costs in child welfare services is critical as new service models are incorporated into routine practice. This paper describes a unit costing estimation system developed in England (cost calculator) together with a pilot test of its utility in the United States where unit costs are routinely available for health services but not for child welfare services. The cost calculator approach uses a unified conceptual model that focuses on eight core child welfare processes. Comparison of these core processes in England and in four counties in the United States suggests that the underlying child welfare processes generated from England were perceived as very similar by child welfare staff in California county systems with some exceptions in the review and legal processes. Overall, the adaptation of the cost calculator for use in the United States child welfare systems appears promising. The paper also compares the cost calculator approach to the workload approach widely used in the United States and concludes that there are distinct differences between the two approaches with some possible advantages to the use of the cost calculator approach, especially in the use of this method for estimating child welfare costs in relation to the incorporation of evidence-based interventions into routine practice.

A utilização da calculadora HP-12C no ensino da matemática financeira visando a qualificação profissional; The use of HP-12C calculator in mathematics teaching financial seeking professional qualification

Simão, Júnio César Mendes
Fonte: Universidade Federal de Goiás; Brasil; UFG; Programa de Pós-graduação em PROFMAT (RG); Instituto de Matemática e Estatística - IME (RG) Publicador: Universidade Federal de Goiás; Brasil; UFG; Programa de Pós-graduação em PROFMAT (RG); Instituto de Matemática e Estatística - IME (RG)
Tipo: Dissertação Formato: application/pdf
Português
Relevância na Pesquisa
37.157483%
This paper deals with the learning of some content from Financial Mathematics using the HP-12C calculator, to prepare citizens for both managing its own nances and for the labor market. The matter will be addressed through practical applications in a pleasant and e ective, with the intention to make students able to resolve nancial situations that present themselves in a critical way, not being carried away by misleading proposals. At the end we present some practical applications where advertisements will be analyzed.; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES; Este trabalho trata da aprendizagem de alguns conteúdos de Matemática Financeira com a utilização da calculadora HP-12C, de modo a preparar cidadãos tanto para administração das suas próprias nanças quanto para o mercado de trabalho. O assunto será tratado através de aplicações práticas de um modo agradável e e caz, com a intenção de tornar os alunos aptos a resolver situações nanceiras que se apresentam de modo crítico, não sendo levados por propostas enganosas. Ao nal iremos apresentar algumas aplicações práticas onde anúncios publicitários serão analisados.

Establishing a reference carbon calculator and policy options to promote low carbon farming practices in the EU

TUOMISTO HANNA LEENA; ANGILERI Vincenzo; DE CAMILLIS CAMILLO; LEIP Adrian; PELLETIER NATHANIEL; RAMOS Fabien; HAASTRUP Palle
Fonte: INRA Publicador: INRA
Tipo: Contributions to Conferences Formato: Printed
Português
Relevância na Pesquisa
27.43587%
The direct emissions of greenhouse gases (GHG) from agriculture accounted for around 10% of total European Union (EU) emissions in 2010. It has been estimated that in the United Kingdom the agri-food sector as whole contributes around 19% of GHG emissions when life cycle emissions are taken into account. To reduce the farming-related GHG emissions appropriate policy instruments and supporting tools that promote low carbon farming practices must be developed. This paper describes an on-going project that aims at assessing the policy options to promote low carbon farming practices in the EU. The project includes: i) a review of existing farm-level life-cycle based carbon calculators and climate-related certification and labelling schemes, ii) the development of a user friendly open-source carbon calculator suitable for assessing the life cycle GHG emissions from different types of farming systems across the whole EU, and iii) the design/assessment of policy options for promoting low carbon farming practices. The carbon calculator is expected to quantify direct and indirect GHG emissions according to the general-level and sector-specific international standards and guidelines on Life Cycle Assessment and carbon footprint. In addition to the GHG emission quantification...

Carbon footprint calculator for European farms: preliminary results of the testing phase

TUOMISTO HANNA LEENA; DE CAMILLIS CAMILLO; LEIP Adrian; PELLETIER NATHANIEL; NISINI SCACCHIAFICHI Luigi; HAASTRUP Palle
Fonte: The American Center for Life Cycle Assessment Publicador: The American Center for Life Cycle Assessment
Tipo: Contributions to Conferences Formato: CD-ROM
Português
Relevância na Pesquisa
27.43587%
To facilitate the adoption of low-carbon farming practices in Europe, the European Commission developed a carbon calculator that assesses greenhouse gas (GHG) emissions and recommends mitigation actions suitable for each farm. The Carbon Calculator, which quantifies GHG emissions based on international standards for life cycle assessment and carbon footprinting, delivers carbon footprint results both at the farm and product level. To best fine-tune the calculator, a testing phase was conducted by calculating the carbon footprints of 54 farms located in seven European countries that were characterized by a variety of different practices and products. Wide variation was found in the carbon footprints quantified within each product group. This variation can be explained by different levels of input use, crop yields and other farming practices. It was concluded that the calculator can help EU farmers identify actions that could lead to substantial reductions in the carbon footprints of their farms and products.; JRC.H.4-Monitoring Agricultural Resources

Matrix Calculator

Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Português
Relevância na Pesquisa
37.323442%
Students can use this N x N Matrix Calculator to explore matrices by varying the size and number of decimal places of the numbers. They can then sort and calculate the matrices.

Probability Diagram Calculator

Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Português
Relevância na Pesquisa
37.157483%
This probability diagram calculator helps students to investigate the probabilities by moving and resizing two circles. While they are moved, probability calculations are visible and adjust to the movement.

Estimation of a contact's course, speed and position based on bearings-only information from two moving sensors with a program for an HP-67/97 calculator

Shudde, Rex H.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
Relevância na Pesquisa
37.323442%
This report provides a procedure for estimating a contact's course, speed and position based on bearings-only data from two moving sensors. This report also contains a program for the HP-67/97 calculator to implement the procedure.; http://archive.org/details/estimationofcont00shud; NA

A procedure for estimating an object's position based on two or more bearings with a program for a TI-59 calculator

Forrest, R. Neagle
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
Relevância na Pesquisa
37.157483%
The Report provides a procedure for estimating an object's position based on bearings taken from or on the object for two or more stations. The Report also provides a program for the TI-59 calculator to implement the procedure.; http://archive.org/details/procedureforesti00forr

A procedure for estimating an object's position based on two or more bearings with a program for a TI-59 calculator

Forrest, R. Neagle
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
Relevância na Pesquisa
37.157483%
The Report provides a procedure for estimating an object's position based on bearings taken from or on the object for two or more stations. The Report also provides a program for the TI-59 calculator to implement the procedure.; http://archive.org/details/procedureforestirev00forr

An Aeronautical Engineerings user's manual to the HP-28S handheld calculator.

Molyneux, Harry F.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado Formato: 60 p.
Português
Relevância na Pesquisa
37.43587%
Approved for public release; distribution is unlimited; Handheld calculators are now powerful enough to have become indispensible tools for the engineer and scientist. With enhanced equation solving capability and extensive user memory, the HP-28S introduces exciting new possibilities. The entire set of tables for one-dimensional gas dynamics can be accessed with unequalled accuracy and speed. But this enhanced power cannot be properly tapped without a pre-planned user directory organization which takes advantage of the HP-28S internal structure. Experience has shown that many students buy expensive programmable calculators but underuse them, finding their powerfulness baffling and frustrating. They employ the same computational techniques with sophisticated $200 continuous-memory programmable machines as could be accomplished with a simple $20 scientific calculator. This manual contains a compendium of useful formulae, programming, and computational techniques for the popular HP-28S Pocket Calculator. In addition to helpful instructions on units conversion, directory organization, and problem-solving methodology which will benefit any HP-28S user, the Aeronautical Engineering student will find sections on Thermodynamics...

The effects of calculator usage on post-primary mathematics students at junior cycle level: a case study approach

O'Donnell, Sabrina Marie
Fonte: University of Limerick, Department of Education and Professional Studies Publicador: University of Limerick, Department of Education and Professional Studies
Tipo: Master thesis (Research); all_ul_research; ul_theses_dissertations; none
Português
Relevância na Pesquisa
37.765225%
non-peer-reviewed; The main purpose of this research paper was to explore the effects of calculator usage on post-primary mathematic students at junior cycle level. This research paper examines the effect of calculator usage on students‟ mathematical performance and how student attitudes toward mathematics are influenced by calculator usage (“this Study”). Thirty-two junior cycle mathematics students and one post-primary school mathematics teacher, all residing in the County Donegal area, participated in this Study. The student participants and the post-primary mathematics teacher involved in this Study were selected through purposive sampling. The student participants were comprised of two mathematical ability levels with 12 students at higher level and 20 students at ordinary level. In this Study, all students were examined on three different tests, namely, (a) a pre-test without calculator access (b) a post-test with the optional use of the calculator and (c) a Likert questionnaire about students‟ attitudes towards calculator usage and mathematics. This Study also examined a mathematics teacher‟s perception towards calculator usage in mathematics. The results on students‟ mathematical performance levels and attitudes towards calculator usage and the mathematics discipline are presented herein. The test for significance was set at .01 alpha level and Cohen‟s d was the measure used to generate the effect sizes. Statistical analysis of the test results show that when students had access to a calculator their overall performance level improved significantly (large effect). The analysis of students‟ attitudes toward the mathematics discipline was generally very positive. The overall analysis of students' attitudes toward calculator usage in mathematics was very positive. The analysis of a teacher‟s attitude towards calculator usage was very positive.

A calculadora gráfica na promoção da escrita matemática na aprendizagem de modelos contínuos não lineares: um estudo com alunos do 11.º ano de Matemática B; The use of the graphics calculator in promoting writing mathematics when learning nonlinear continuous models: a study with 11th grade mathematics B

Campos, Sara Gabriela Lomba de Aguiar
Fonte: Universidade do Minho Publicador: Universidade do Minho
Tipo: Trabalho de Conclusão de Curso
Publicado em //2014 Português
Relevância na Pesquisa
27.745889%
Relatório de estágio de mestrado em Ensino de Matemática no 3.º Ciclo do Ensino Básico e no Ensino Secundário; O presente estudo teve como principal objetivo averiguar o contributo da escrita matemática com recurso à calculadora gráfica na aprendizagem de modelos contínuos não lineares de alunos do 11.º de Matemática B. Para concretizar este objetivo estabeleceram-se as seguintes questões de investigação: (1) O que escrevem os alunos quando utilizam a calculadora gráfica na aprendizagem de modelos contínuos não lineares? (2) Que dificuldades manifestam os alunos na escrita matemática com recurso à calculadora gráfica na aprendizagem de modelos contínuos não lineares? (3) Que perceções têm os alunos sobre a escrita matemática com recurso à calculadora gráfica na aprendizagem de modelos contínuos não lineares? Para dar resposta a estas questões recorreu-se a diversos métodos de recolha de dados: dois questionários, um no início e outro após a intervenção pedagógica; observação das atividades dos alunos, através de uma grelha de observação e de gravações de aulas em vídeo; análise documental (planificações de aulas, produções dos alunos e questões colocadas no final de algumas aulas). Da análise dos dados recolhidos...

Development and feasibility of a personalized, interactive risk calculator for knee osteoarthritis

Losina, Elena; Klara, Kristina; Michl, Griffin L.; Collins, Jamie E.; Katz, Jeffrey N.
Fonte: BioMed Central Publicador: BioMed Central
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
37.517063%
Background: The incidence of knee osteoarthritis (OA) is rising. While several risk factors have been associated with the development of knee OA, this information is not readily accessible to those at risk for osteoarthritis. Risk calculators have been developed for several prevalent chronic conditions but not for OA. Using published evidence on established risk factors, we developed an interactive, personalized knee OA risk calculator (OA Risk C) and conducted a pilot study to evaluate its acceptability and feasibility. Methods: We used the Osteoarthritis Policy (OAPol) Model, a validated, state-transition simulation of the natural history and management of OA, to generate data for OA Risk C. Risk estimates for calculator users were based on a set of demographic and clinical factors (age, sex, race/ethnicity, obesity) and select risk factors (family history of knee OA, occupational exposure, and history of knee injury). OA Risk C presents personalized risk of knee OA in several ways to maximize understanding among a wide range of users. We conducted a study of 45 subjects in a primary care setting to establish the feasibility and acceptability of the OA risk calculator. Pilot study participants were asked several questions regarding ease of use...

A Web-Based Normative Calculator for the Uniform Data Set (UDS) Neuropsychological Test Battery

Shirk, Steven D; Weintraub, Sandra; Mitchell, Meghan B; Shaughnhessy, Lynn W; Sherman, Janet Cohen; Locascio, Joseph J; Atri, Alireza
Fonte: BioMed Central Publicador: BioMed Central
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
27.43587%
Introduction: With the recent publication of new criteria for the diagnosis of preclinical Alzheimer's disease (AD), there is a need for neuropsychological tools that take premorbid functioning into account in order to detect subtle cognitive decline. Using demographic adjustments is one method for increasing the sensitivity of commonly used measures. We sought to provide a useful online z-score calculator that yields estimates of percentile ranges and adjusts individual performance based on sex, age and/or education for each of the neuropsychological tests of the National Alzheimer's Coordinating Center Uniform Data Set (NACC, UDS). In addition, we aimed to provide an easily accessible method of creating norms for other clinical researchers for their own, unique data sets. Methods: Data from 3,268 clinically cognitively-normal older UDS subjects from a cohort reported by Weintraub and colleagues (2009) were included. For all neuropsychological tests, z-scores were estimated by subtracting the raw score from the predicted mean and then dividing this difference score by the root mean squared error term (RMSE) for a given linear regression model. Results: For each neuropsychological test, an estimated z-score was calculated for any raw score based on five different models that adjust for the demographic predictors of SEX...

A Cosmology Calculator for the World Wide Web

Wright, Edward L.
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
27.517063%
A cosmology calculator that computes times and distances as a function of redshift for user-defined cosmological parameters is available on the World Wide Web. This note gives the formulae used by the cosmology calculator and discusses some of its implementation. A version of the calculator that allows one to specify the equation of state parameter w and w' and neutrino masses, and a version for converting the light travel times usually given in the popular press into redshifts are also available.; Comment: 8 pages with 1 included figure. Cosmology calculator available at http://www.astro.ucla.edu/~wright/CosmoCalc.html, light travel time converter at http://www.astro.ucla.edu/~wright/DlttCalc.html and the advanced cosmology calculator at http://www.astro.ucla.edu/~wright/ACC.html Revised to fix a typo, add a reference, and match the accepted version to be published in the PASP

Development of a Novel Heart Failure Risk Tool: The Barcelona Bio-Heart Failure Risk Calculator (BCN Bio-HF Calculator)

Lupón, Josep; Antonio, Marta de; Vila, Joan; Peñafiel, Judith; Galán, Amparo; Zamora, Elisabet; Urrutia de Diego, Agustín; Bayés Genís, Antoni
Fonte: Universidade Autônoma de Barcelona Publicador: Universidade Autônoma de Barcelona
Tipo: Artigo de Revista Científica Formato: application/pdf
Publicado em //2014 Português
Relevância na Pesquisa
27.578457%
Background: A combination of clinical and routine laboratory data with biomarkers reflecting different pathophysiological pathways may help to refine risk stratification in heart failure (HF). A novel calculator (BCN Bio-HF calculator) incorporating N-terminal pro B-type natriuretic peptide (NT-proBNP, a marker of myocardial stretch), high-sensitivity cardiac troponin T (hs-cTnT, a marker of myocyte injury), and high-sensitivity soluble ST2 (ST2), (reflective of myocardial fibrosis and remodeling) was developed. Methods: Model performance was evaluated using discrimination, calibration, and reclassification tools for 1-, 2-, and 3-year mortality. Ten-fold cross-validation with 1000 bootstrapping was used. Results: The BCN Bio-HF calculator was derived from 864 consecutive outpatients (72% men) with mean age 68.2±12 years (73%/27% New York Heart Association (NYHA) class I-II/III-IV, LVEF 36%, ischemic etiology 52.2%) and followed for a median of 3.4 years (305 deaths). After an initial evaluation of 23 variables, eight independent models were developed. The variables included in these models were age, sex, NYHA functional class, left ventricular ejection fraction, serum sodium, estimated glomerular filtration rate, hemoglobin, loop diuretic dose...

Treating the nestedness temperature calculator as a black box can lead to false conclusions

Fischer, Joern; Lindenmayer, David
Fonte: Munksgaard International Publishers Publicador: Munksgaard International Publishers
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
27.517063%
We used the nestedness temperature calculator to examine patterns of nestedness in two datasets on birds in fragmented landscapes in southeastern Australia. During our initial analyses, we found that the nestedness calculator was susceptible to detect nestedness as an artifact of passive sampling. To examine this problem in more detail, we created random matrices that simulated a situation where nestedness did not occur, and we reanalysed two previously published datasets. Our results showed that the nestedness calculator may (1) overestimate the degree of nestedness and its statistical significance, and (2) consider some datasets which include both ubiquitous and rare species to be significantly nested although they are not. Our results highlight the danger of blindly relying on the p-values generated by analytical packages such as the nestedness calculator. We suggest that users of analytical packages (often field ecologists) will need to be more critical in future and familiarise themselves in more detail with the packages they use. In addition, the developers of analytical packages (often theoretical ecologists) will need to communicate more clearly the limitations and assumptions underlying analytical tools such as the nestedness calculator.

Application of the DIY carbon footprint calculator to a wastewater treatment works

Chetty,Siva; Pillay,Kaverajen
Fonte: Water SA Publicador: Water SA
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2015 Português
Relevância na Pesquisa
37.578457%
The provision of water and wastewater treatment services exerts a huge operational cost on public financial resources. A substantial portion of the operational budget is made up of carbon-intensive energy costs. Energy is consumed in this sector in pumping, aeration, motor drives, administration, transportation and in the manufacture of chemicals such as polyelectrolyte, chlorine and ozone. The high electrical power consumption exerts added pressure on the environment in terms of greenhouse gas emissions. In order to manage the energy budget and develop climate-friendly technological options, Royal HaskoningDHV (RHDHV) has developed a do-it-yourself (DIY) Excel-based carbon footprint calculator to estimate the carbon equivalent emissions for a waterworks, a wastewater treatment works or a pumping station. The DIY carbon calculator computes Scope 1, Scope 2 and Scope 3 emissions. The DIY calculator starts with establishing the baseline carbon footprint of a works and shows the relative carbon equivalent emissions for different treatment stages. The next step involves the development of strategies to reduce the carbon footprint. Inherent within a wastewater treatment works is its ability to potentially generate its own 'green' energy by using anaerobically produced methane gas as a green energy alternative. This investigation demonstrates how the baseline carbon footprint of a wastewater treatment works can be reduced by considering viable options such as biogas to power generation...