cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.14304704.v1
title: Transitioning from “It Looks Like” to “It Has To Be” in Geometrical Workspaces: affect and near-to-me attention

description: Abstract Within a practitioner researcher framework, this paper draws on a particular mathematics education theory and aspects of neuroscience to show that, from a learner’s perspective, moving to a deductive reasoning style appropriate to basic Euclidean geometry, can be facilitated, or impeded, by emotion and/or directed attention. This shows that the issue of a person’s deductive reasoning is not a merely cognitive one, but can involve affective aspects related to perception – particularly perception of nearby sense data – and emotion. The mathematics education theory that has been used is that of the Espace de Travail Mathématique, the English translation of which is known as Mathematical Working Spaces (MWS). The aspects of neuroscience that have been used pertain to the distinct processing streams known as top-down and bottom-up attention. The practitioner research perspective is aligned with Mason’s teaching-practice-based ‘noticing’; qualitative data analysed in this report include individual interviews with school teachers on in-service courses and reflective notes from teaching. Basic Euclidean geometry is used as the medium for investigating transition from ‘it looks like’ to a reasoned ‘it has to be’.
DOI: 10.6084/m9.figshare.14304686.v1
title: The Mathematical Work with the Derivative of a Function: Teachers’ Practices with the Idea of “Generic”

description: Abstract This paper investigates the introduction of the derivative notion and, specifically, the introduction of the derivative function, as a significant moment in the development of mathematical work on functions. In particular, we analyse the process of genericization that two Italian teachers conducted with their grade 13 students, in order to make them shift from the derivative at a specific point x0to the derivative as a global function in the x variable. Specifically, we analyse the role of the teacher in the semiotic genesis of this process and investigate the role of semiotic resources therein. As a result, we highlight the importance of conducting carefully this shift from the pointwise x0 sign to the global x sign, in order to gain an actual shift in the perceived properties of the derivative function, which depends on the x sign as a variable. In conclusion, we connect our findings to the model of the Mathematical Working Space of functions, with particular regard to the “visualisation” process and the semiotic axis.
DOI: 10.6084/m9.figshare.14304684.v1
title: Descriptive Problems of Fractions

description: Abstract This paper presents a study about fractions word problems, which the school tradition has transmitted. They are descriptive problems because their context is a story or a pseudorealistic narrative not intended to address any truly practical situation. Through the rational and historical-epistemological analysis of these issues, methodological clarity is provided on these fractions issues, identifying their types, structure, analytical reading and methods of resolution.
DOI: 10.6084/m9.figshare.14304683.v1
title: Additive Conceptual Field: a study on elementary school teachers

description: Abstract This article discusses the results of a doctoral thesis entitled: “The teaching of additive structures among elementary school teachers.” It aims to identify and understand the contributions associated with the undertaking of a study of the Additive Conceptual Field in mathematics learning of elementary school teachers who participated in a discussion group. The research adopted a broadly qualitative approach, in which quantitative data was also considered. The analyses were based on the resolutions of problems administered to students, problems produced by teachers and those drawn from mathematics textbooks used in the school, as well as data collected during group discussions. The results indicate that, during the study, the teachers amplified their perspectives on the nature of problems associated with the additive field, producing a balanced quantity of problems in the categories: composition, transformation, and comparison.
DOI: 10.6084/m9.figshare.14304682.v1
title: It's on the Web: what now

description: Abstract In this paper, we aim to problematize the concept of hypertext and its alleged ‘nearness’ with the philosophical concept of rhizome of Deleuze and Guattari. For that, we betake to the writings of those philosophers about rhizome and to a research experience in a course entitled Applied Mathematics, from a Biological Sciences undergraduate course. Hypertext and rhizome concepts put us in motion to questioning: is it possible to study Differential and Integral Calculus without prerequisites or hierarchical structure of content? This question guides the entire research movement that originated the text presented here. As results, we highlight: text or hypertext are equally ‘close’ to the concept of rhizome; also, to ‘liberate’ mathematics from a hierarchical structural axis favors the invention in the classroom.
DOI: 10.6084/m9.figshare.14304680.v1
title: Mathematics Teaching in the Early Grades: learning from a teacher in the context of investigative tasks

description: Abstract This article presents reflections on the viability of use of investigative tasks in mathematics teaching in elementary school through comprehension of strengths and weaknesses in this area of application, starting from a teacher's actions and hindsight. The data were obtained from the teacher and students (8 and 9-year-olds) of a forth-grade class from a Brazilian public elementary school. The main components of the data are the following: interviews, audio, and video recordings, a questionnaire and reports done by the teacher and students' records. Some of the identified potentialities are: encouragement to autonomy and creativity; development of students' argumentation and registering skills; search for different strategies mobilizing math knowledge. Limitations were also identified such as time to develop the tasks; break time between classes; children's lack of experience with argumentation and registering; unpredictability generated by the openness of the proposal. The potentialities raised point out to a possibility of using these tasks in the early grades, contributing not only to mathematics learning, but also to the development of competences such as respect and autonomy. The limitations observed were either overcome or minimized in many moments through the teacher's reflexive attitude and through team work.
DOI: 10.6084/m9.figshare.14304677.v1
title: Multimodal Narratives: the image of mathematicians in digital mathematical performances

description: In this paper I present a case study. I investigated the images of mathematicians in a context in which undergraduate students were engaged in the production of digital mathematical performances (DMP). I argue that DMP may be conceptualized as multimodal narratives in which one communicates mathematical ideas using the arts. The students were enrolled in an extra-class course and produced two DMP under my supervision: a dramatic one and a musical one. Twelve different images of mathematicians were explored in the DMP. In my discussions, I highlight the narrative nature emergent from performance and the relation involving narrative, paramathematics, and identity. This research offers ways to deconstruct stereotypes about mathematics and mathematicians and supports the construction of alternate public images through the production of multimodal narratives based on the use of arts and digital technology.
DOI: 10.6084/m9.figshare.14304676.v1
title: What Would a World Without Mathematics Look Like?: in narrative truths

description: The question "What would a world without math look like?" is the trigger of narratives and problematizations taking place in this writing. But how does a question trigger narratives? How does a question become one? How do narratives invent problems? The bet is that this happens by and in the narrative, which tensions an event to its limits and produces another event. An event that affects classrooms of undergraduate courses in Mathematics and Pedagogy, causing unrest in the thinking of those who teach mathematics. It is in this production that the truth gives place to questioning that interrogates mathematics and scavenges its belongings.
DOI: 10.6084/m9.figshare.14304672.v1
title: A Practice Model to Analyze the Social Process of Academic Institutionalization of Mathematical Knowledge

description: The transition process of mathematical knowledge, since its conception and development by mathematicians to its diffusion in the classroom, has been studied by several authors and from different perspectives of Mathematics Education. This article describes a theoretical and methodological framework to analyze this process, which we call the social process of institutionalization, focusing on the practices of the actors involved in each of its moments. The model is developed from the socio-epistemological perspective and relies on the theory of discourse analysis as a social action to study school mathematical discourse. In particular, it is developed the way the theoretical and methodological framework was used to analyze the social process of institutionalization of the concept of limit on the Uruguayan educational context. It explores, in turn, its possible extension to the process of institutionalization of other mathematical knowledge in other socio-cultural contexts.
DOI: 10.6084/m9.figshare.14304670.v1
title: The Contribution of the Spanish Mathematical Society to Mathematics Education during the First Twenty Years to the Foundation

description: On the recent celebration of the foundation centennial of the Spanish Mathematical Society, created in 1911, we analyze in the paper if this matter had repercussions in Spanish mathematics education. With this goal in mind, we consulted the journal founded because of this birth: the Revista de la Sociedad Matemática Española, and the Revista Matemática Hispano-Americana, its successor. On the study of these publications and other sources, we concluded that, indeed, the birth of Spanish Mathematical Society gave an impetus to mathematics education in Spain, although their effects would not be appreciated until a few years later.
DOI: 10.6084/m9.figshare.14304668.v1
title: A Study of the Creation and Development of Undergraduate Mathematics at the Federal University of Mato Grosso do Sul

description: This paper presents a study of the history of the Mathematics major of the Federal University of Mato Grosso do Sul (UFMS). First, we discuss the creation and further federalization of the University and the training course of Mathematics teachers in its various campuses. Secondly, we discuss specifically the Mathematics major of the Institute of Mathematics, located in Campo Grande, having as the main source curricular changes during 30 years time and a survey of the amount of its students in this period, as well as their professional performance. For this, we considered various documentary sources and responses to questionnaires completed by former students. The results show that it is necessary to rethink the initial training in view of the need for teachers to work in basic education.
DOI: 10.6084/m9.figshare.14304667.v1
title: School Mathematics Curriculum and the Governing of the Modern Subject

description: Thinking school mathematics with the Foucauldian notion of governmentality allows the exploration of the functioning of the mathematics curriculum as a government technology. The practices and discourses of mathematics education fabricate the rational, objective, universal subject, who becomes the Modern cosmopolitan citizen. A genealogical analysis addresses the insertion of school mathematics in the Spanish colonial project in Colombia and in its subsequent mutations in the consolidation of the nation’s state in the 20th century. The study shows how the Colombian mathematics curriculum affects the entry of the nation in the path towards development. It also points to the inscription of Modern norms and forms of thinking and being in Colombian children. This dual process maintains the exclusion of subjectivities that do not align with the Modern self. This analysis questions the naïve narrative of empowerment that is frequently attributed to school mathematics.
DOI: 10.6084/m9.figshare.14304665.v1
title: Sectoral proximity in the Brazilian manufacturing industry

description: Abstract This study evaluates the proximity in productive and technological terms between 100 manufacturing sectors, offering a new measure of cognitive proximity. There are three contributions: an unprecedented neighborhood matrix created with information on multiproduct plants; a new index that captures productive and technological skills related to worker’s occupation; and a method of spatial econometrics were used in an innovative way to evaluate the sectoral proximity. Was used unpublished information from a special tabulation of PIA-Empresa/IBGE. Statistical analyzes confirmed the existence of proximity between manufacturing sectors verified through the productive and technological skills of workers. The neighborhood network was denser among sectors that have occupations with similar skills and between sectors of the same technological level. Proximity sectoral spillovers were found in the form of positive marginal effects on productivity and investment.
DOI: 10.6084/m9.figshare.14304664.v1
title: Assessing food insecurity in Brazil: the issue of the non-symmetric effects

description: Abstract The main objective of this article is to study how a set of socioeconomics characteristics impacts the probability of occurrence of different levels of the food insecurity in Brazil. This is performed taking into consideration the informational complexity of the Brazilian Scale of Food Insecurity (EBIA). Our hypothesis, which are tested through a generalized ordered logistic model, is that the explanatory variables offer asymmetric effects regarding the different categories of food insecurity measured by the EBIA. The results confirm that hypothesis, pointing out that it is important to consider the complexity involved in the food insecurity phenomenon to discuss public policy.
DOI: 10.6084/m9.figshare.14304661.v1
title: Fiscal and macroeconomic effects of the constitutional amendment to the spending ceiling (No. 95/2016)

description: Abstract This paper investigates the effects of the Constitutional Amendment No. 95/2016 on fiscal management, economic growth, and families’ welfare. It uses a dynamic general equilibrium model with heterogeneous agents. The model includes congestion in the government’s offer of consumer services to households and public capital to firms. Considering the population growth, the freezing of public spending proposed by EC 95/2016 could bring a strong reduction in the level of services offered to families, especially in the poorest strata. Alternative policies that allow the variation of public investments accompanied by compensation for losses by the poorest would not only generate allocation efficiency gains and improvement in the redistribution of income, but also the reversal of bottlenecks and sustained economic growth. The product of the economy would grow 9.2%, after 10 years of the EC 95/2016, driven by public investment.
DOI: 10.6084/m9.figshare.14304659.v1
title: Population aging and the probability of saving: a life cycle analysis of the Brazilian case

description: Abstract This study analyzes the life cycle of private individuals' savings in Brazil, reflecting on how the proportion of savers changes as the population ages. To this end, we employ a multinomial logit model to compare the probability of savings and dissavings for individuals, according to their ages, based on data from the Household Budget Surveys (HBS) of 2002-2003 and 2008-2009. The results confirm a greater incidence of savers among middle-aged adults and a greater percentage of dissavers among the elderly. However, given the age structure of the Brazilian population, demographic change is still expected to result in an increase in the number of net savers in the coming years.
DOI: 10.6084/m9.figshare.14304657.v1
title: Causality in economics with time series data: a guided tour since Classical Antiquity

description: Abstract This paper frames the study of causality in economics, with time series data, within the broader context of the philosophical question of causality. To that purpose, we demonstrate that the spectrum of existing approaches in Economics results from the responses that have been given, so far, to the ontological, epistemological and pragmatic problems of causality within this discipline. We further conclude that, far from being the only possible, correct or adequate answer, the ubiquitous Granger causality is just one of those answers. In a broader perspective, our work provides a concise but articulated and historically grounded view of the origins, evolution, and problematics of the analysis of causality in Economics.
DOI: 10.6084/m9.figshare.14304656.v1
title: Business cycles in the Brazilian industrial activity: An analysis on the time and frequency domain

description: Abstract This article analyzes the monthly behavior of the industrial production of the states of Bahia, Minas Gerais, Pernambuco, Paraná, Rio de Janeiro, Rio Grande do Sul and São Paulo, in the period from 2002:01 to 2014:12. To this, was used the methodology of common trends and cycles of Vahid and Engle (1993). The tests prove the existence of two common trends and five common cycles. Deviations from the long-term equilibrium in the industrial activity of São Paulo influence the production trajectory of the other states studied, while permanent shocks in Rio Grande do Sul affect only the industrial dynamics of Paraná. To analyze the business cycles, were introduced tools from the spectral analysis, thus obtaining additional information regarding the synchronization of the short-term dynamics. The hypothesis of co-movements between the Paraná and São Paulo cycles was confirmed through frequency domain analysis.
DOI: 10.6084/m9.figshare.14304655.v1
title: Fiscal fragility and business cycles in Brazil after the Real Plan: Evidence from a dynamic factor model applied to VAR analysis

description: Abstract Fiscal policy interventions are frequently prescribed to attenuate fluctuations in economic activity. Reliance on fiscal initiatives is particularly recommended during severe recessions when monetary policy has limited efficacy. Nevertheless, empirical evidence from emerging economies indicates that public expenditures frequently exhibit a procyclical behavior, and fiscal imbalances may trigger economic crises. This paper applies a dynamic factor model to derive an index of the public sector financial fragility and estimates vector autoregressions (VAR) to investigate the cyclical behavior of fiscal policy in Brazil. Using monthly data from 1996 to 2019, the empirical analysis verified if fiscal fragility grows as the country’s economic activity expands. The results show that fiscal fragility apparently declines after positive exogenous shocks in production and other factors that contribute to macroeconomic instability lead to greater fiscal imbalances, such as increases in exchange rate volatility.
DOI: 10.6084/m9.figshare.14304652.v1
title: Analysis and impact of BNDES FINAME’s accredited companies, financed products and supply chain

description: Abstract BNDES FINAME is one of the most traditional public policies for the Brazilian capital goods industry. It provides special financial conditions for acquisition and production of capital goods that meet certain local content requirements. This paper gathers information from the companies accredited for BNDES in order to have their products supported on FINAME, including these products and their supply chain. The database includes 23.145 products from 3.695 capital goods companies and 30.000 companies from the supply chain. The main goal is to merge those information with BNDES financing data from 2016, 2017 and 2018, and also the Brazilian input-output matrix in order to estimate the direct and indirect impact on both production and employment. Estimates showed that each R$1 financed added, on average, another R$0,70 in direct and indirect production. In addition, each R$1 million financed helped on the maintenance of 4 jobs.
DOI: 10.6084/m9.figshare.14304650.v1
title: The first 80 days of the COVID-19 pandemic in the city of Belo Horizonte: from containment to reopening

description: Abstract The paper examines the implications of Covid-19 pandemic for the city of Belo Horizonte (BH), during the first 80 days of the disease. We use a descriptive-analytical approach to estimate the growth of Covid-19 cases over time, the excess of deaths, the virus’ rate of transmissibility, and the consequent burden on the municipal the health system, measured by the rate of occupancy of public hospital beds. Also, we identify the main containment policies adopted by local authorities, and the implications of reopening measures and the following reduction of social distancing. Our findings reveal that a well-managed Unified Health System (SUS) is paramount to effectively tackle the pandemic and its consequences for the population. The reopening process has imposed new challenges that will require close monitoring by the authorities and by the society.
DOI: 10.6084/m9.figshare.14304648.v1
title: The regional development public policies in Mato Grosso do Sul

description: Abstract The paper’s main objective is to organize and analyze the regional development public policies in Mato Grosso do Sul. To do so, we initially carry out a historical tracking of the development policies applied in the state territory, dating back to the Vargas government. Then, we look at recent policies related to “fiscal wars” and National Integration and Development Axes that in MS resulted in the construction of the Ferronorte railroad and the Brazil-Bolivia gas pipeline besides the Tietê-Paraná waterway. The main results that show the development of the state are marked by the implemented public policies.
DOI: 10.6084/m9.figshare.14304647.v1
title: The Determinants of Tax Revenue and Tax Effort in Developed and Developing Countries: Theory and New Evidence 1996-2015

description: Abstract This paper measures the tax effort of a group of fifty-nine developed and developing countries over the period 1996-2015 by comparing a country’s actual tax/GDP ratio with the ratio predicted derived from an international tax function which relates tax revenue to various measures of a country’s taxable capacity such as the level of per capita income; the share of trade in GDP; the productive structure, and the level of financial deepening. The tax function is estimated using cross section data; pooled time series/cross section data, and panel data using a fixed effects estimator. The results are compared and show a range of tax effort from South Africa with the highest effort and Switzerland with the lowest effort. Implications for policy are drawn. The paper is critical of studies that include institutional variables (and other variables not related to the tax base of countries) to measure tax effort when they are really explanations of why the tax ratio differs between countries not of tax effort itself.