Preserving local writers, genealogy, photographs, newspapers, and related materials

CERN Document Server

Smallwood, Carol

2012-01-01

Preserving Local Writers, Genealogy, Photographs, Newspapers, and Related Materials draws on the practical knowledge of archivists, preservationists, librarians, and others who share the goal of making local history accessible to future generations. Anyone who plans to start a local history project or preserve important historical materials will find plenty of tips, techniques, sample documents, project ideas, and inspiration in its pages.

38 CFR 1.505 - Genealogy.

Science.gov (United States)

2010-07-01

... 38 Pensions, Bonuses, and Veterans' Relief 1 2010-07-01 2010-07-01 false Genealogy. 1.505 Section 1.505 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS GENERAL PROVISIONS Release of Information from Department of Veterans Affairs Claimant Records § 1.505 Genealogy. Information...

Foucault, Maoism, Genealogy

DEFF Research Database (Denmark)

Karlsen, Mads Peter; Villadsen, Kaspar

2015-01-01

and his critique of “totalizing institutions,” “uniform discourse” and “juridical universality.” The second part of the article offers a close reading of Foucault’s reflections on genealogy in his 1976 lecture series which demonstrates how the Maoist activist principles noticeably resonate...... often portrayed as unambiguously negative. And third, the goal is to demonstrate how principles developed in Maoist political activism are not only realized in Foucault’s activities within the GIP, but also in his lecture-hall formulations of genealogy, power, and critique....

Genealogical data in population medical genetics: field guidelines

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Fernando A. Poletta

2014-01-01

Full Text Available This is a guide for fieldwork in Population Medical Genetics research projects. Data collection, handling, and analysis from large pedigrees require the use of specific tools and methods not widely familiar to human geneticists, unfortunately leading to ineffective graphic pedigrees. Initially, the objective of the pedigree must be decided, and the available information sources need to be identified and validated. Data collection and recording by the tabulated method is advocated, and the involved techniques are presented. Genealogical and personal information are the two main components of pedigree data. While the latter is unique to each investigation project, the former is solely represented by gametic links between persons. The triad of a given pedigree member and its two parents constitutes the building unit of a genealogy. Likewise, three ID numbers representing those three elements of the triad is the record field required for any pedigree analysis. Pedigree construction, as well as pedigree and population data analysis, varies according to the pre-established objectives, the existing information, and the available resources.

Lesbian Studies after The Lesbian Postmodern: toward a new genealogy.

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Doan, Laura

2007-01-01

While Lesbian Studies is established as a commodity in the academic marketplace, its disciplinary contours are rather more obscure-and even more problematically, its disciplinary genealogy remains somewhat crude. The dominant genealogy of Lesbian Studies might best be characterized as a 'collision model,' a battle between politics and theory, even though much existing scholarship draws on both Lesbian-Feminist Theory and Queer Theory.1 This article proposes that the tools and methods of a sub-field called 'Lesbian Cultural History' might be useful in generating other historical accounts of the origins and evolution of Lesbian Studies. Such a project is vital because the writing of our disciplinary History clarifies how we envision a disciplinary future.

[Fragments of a health work genealogy: genealogy as a research technique].

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Nardi, Henrique Caetano; Tittoni, Jaqueline; Giannechini, Letícia; Ramminger, Tatiana

2005-01-01

The article aims to explore the influence of health work in subjectification processes. The notion of history commonly used in health-related scientific output is based on an evolutionist and developmental logic. As a counterpoint, the genealogical approach used in this article and based on Michel Foucault highlights the notions of discontinuity, event, and the production of truth as tools to rethink the ethical and political implications involved in the production of knowledge, practices, and subjects. To illustrate these aspects we sketch a health work genealogy, specifically in the field of mental health and HIV/AIDS work.

Genealogical series method. Hyperpolar points screen effect

International Nuclear Information System (INIS)

Gorbatov, A.M.

1991-01-01

The fundamental values of the genealogical series method -the genealogical integrals (sandwiches) have been investigated. The hyperpolar points screen effect has been found. It allows one to calculate the sandwiches for the Fermion systems with large number of particles and to ascertain the validity of the iterated-potential method as well. For the first time the genealogical-series method has been realized numerically for the central spin-independent potential

Logistics of Mathematical Modeling-Focused Projects

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Harwood, R. Corban

2018-01-01

This article addresses the logistics of implementing projects in an undergraduate mathematics class and is intended both for new instructors and for instructors who have had negative experiences implementing projects in the past. Project implementation is given for both lower- and upper-division mathematics courses with an emphasis on mathematical…

Teaching mathematical modelling through project work

DEFF Research Database (Denmark)

Blomhøj, Morten; Kjeldsen, Tinne Hoff

2006-01-01

are reported in manners suitable for internet publication for colleagues. The reports and the related discussions reveal interesting dilemmas concerning the teaching of mathematical modelling and how to cope with these through “setting the scene” for the students modelling projects and through dialogues......The paper presents and analyses experiences from developing and running an in-service course in project work and mathematical modelling for mathematics teachers in the Danish gymnasium, e.g. upper secondary level, grade 10-12. The course objective is to support the teachers to develop, try out...... in their own classes, evaluate and report a project based problem oriented course in mathematical modelling. The in-service course runs over one semester and includes three seminars of 3, 1 and 2 days. Experiences show that the course objectives in general are fulfilled and that the course projects...

To Alleviate or Elevate the Euroamerican Genealogy Fever

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Iain Riddell

2018-03-01

Full Text Available There has been a quiet cultural drift towards professionalism in genealogy over the last two decades. Developments in the UK on this subject have resulted in educational offerings that support professionalism through accountability to service consumers while a US debate has pushed for a recognised and regarded scholarship to underpin the professional genealogist. This article places the educational and learning needs of three broad groups of genealogists into the framework of the professional debate in its generality and genealogical specifics. With a concentration on the British context, the article considers the cultural–commercial signals and support offered to ‘armchair enthusiasts’; the emerging models of professional education and formation aimed at lineage makers and the ongoing fractured models of scholastic genealogy. Looking ahead at educational needs, genealogy like other professions is now under threat from advances in artificial intelligence and algorithms, which could slice through the underpinnings of genealogical professionalism. The article concludes with a discussion of an alternative approach to genealogical education derived from the proposition that professionalism is to be found in the outputs and outcomes rather than the organisation of the practitioners of economic activity. From this stance, the needs of a full range of people pursuing genealogy can be addressed and their work informed by the developing understanding of Euroamerican kinship.

GENLIB: an R package for the analysis of genealogical data.

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Gauvin, Héloïse; Lefebvre, Jean-François; Moreau, Claudia; Lavoie, Eve-Marie; Labuda, Damian; Vézina, Hélène; Roy-Gagnon, Marie-Hélène

2015-05-15

Founder populations have an important role in the study of genetic diseases. Access to detailed genealogical records is often one of their advantages. These genealogical data provide unique information for researchers in evolutionary and population genetics, demography and genetic epidemiology. However, analyzing large genealogical datasets requires specialized methods and software. The GENLIB software was developed to study the large genealogies of the French Canadian population of Quebec, Canada. These genealogies are accessible through the BALSAC database, which contains over 3 million records covering the whole province of Quebec over four centuries. Using this resource, extended pedigrees of up to 17 generations can be constructed from a sample of present-day individuals. We have extended and implemented GENLIB as a package in the R environment for statistical computing and graphics, thus allowing optimal flexibility for users. The GENLIB package includes basic functions to manage genealogical data allowing, for example, extraction of a part of a genealogy or selection of specific individuals. There are also many functions providing information to describe the size and complexity of genealogies as well as functions to compute standard measures such as kinship, inbreeding and genetic contribution. GENLIB also includes functions for gene-dropping simulations. The goal of this paper is to present the full functionalities of GENLIB. We used a sample of 140 individuals from the province of Quebec (Canada) to demonstrate GENLIB's functions. Ascending genealogies for these individuals were reconstructed using BALSAC, yielding a large pedigree of 41,523 individuals. Using GENLIB's functions, we provide a detailed description of these genealogical data in terms of completeness, genetic contribution of founders, relatedness, inbreeding and the overall complexity of the genealogical tree. We also present gene-dropping simulations based on the whole genealogy to

Til kulturhistoriens genealogi

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Tine Damsholt

2010-11-01

Full Text Available Hvad er kulturhistorie? Dette retoriske spørgsmål stillede en af dansk kulturhistories faddere Troels Troels-Lund allerede på tærsklen til det 20. århundrede og gav sit eget veloplagte og polemiske svar, hvor han hyldede dagliglivets historie frem for staternes og krigenes historie. Men er dette svar - såvel som spørgsmålet - stadig relevant i det 21. århundrede? I det følgende skal vi se lidt nærmere på, hvad det særligt er kulturhistorie kan, og hvorvidt og hvordan den adskiller sigfra den almindelige historie.Abstract: The Genealogy of Cultural HistoryWhat is cultural history? The paper discusses whether cultural history still should be defined by having a specific empirical object such as the history of everyday life. Taking the point of departure in the current mainstreaming of cultural history and topics outside political history within the discipline of history after the cultural turn, it is argued that cultural history should rather be a specific analytical strategy. The paper investigates the Foucauldian notion of genealogy or "history of the present" and proposes an understanding of cultural history asan analytical strategy that seeks to destabilize a present that has forgotten its contingency and the time-bound questions that gave rise to its beliefs and practices. Genealogy is therefore about tracing the heterogeneous pathways that led to the apparent solidity of the present. A first sketch to a genealogy of cultural history in Denmark is given through a discussion of the canonized text by T. Troels-Lund, On Cultural History from 1894. The idea of everyday life as the analytical and defining object of cultural history is constituted in this text as well as in the disciplinary battles that formed the situational background for Troels-Lunds argument. Instead of taking this situated definition for a given fact cultural history is - in the tradition from Foucault - understood as a critical, destabilizing and thus self

Project-Based Learning and Design-Focused Projects to Motivate Secondary Mathematics Students

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Remijan, Kelly W.

2017-01-01

This article illustrates how mathematics teachers can develop design-focused projects, related to project-based learning, to motivate secondary mathematics students. With first-hand experience as a secondary mathematics teacher, I provide a series of steps related to the engineering design process, which are helpful to teachers in developing…

On finding algebraic expressions for genealogical coefficients

International Nuclear Information System (INIS)

Kanyauskas, J.M.; Shimonis, V.Ch.; Rudzikas, Z.B.

1979-01-01

It has been attempted to obtain analytical expressions for genealogical coefficients with one detached electron in the case of L-S coupling. A method of second quantization and tensorial properties of the quasi-spin operator are applied. It is restricted to the states for the classification of which the seigniority quantum number v is sufficient. Three ways of the acquirement of these expressions are discussed: 1. In the recurrent way wave functions of N and N-1 electrons are built, consequently expressing these functions in terms of the creation-annihilation operators. 2. Recurrent summation with the use of evident, simple genealogical coefficients. 3. Using the ratios, connecting the genealogical coefficients with the normalized multiplier. The data are presented in formulae and discussions. The generalization of the Redmond's formula is obtained and relatively simple algebraic expressions of the genealogical coefficients of the equivalent electron configurations, for the distinction of the recurrent terms of which introduction of the seigniority quantum number v is sufficient, are given

Genealogical Properties of Subsamples in Highly Fecund Populations

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Eldon, Bjarki; Freund, Fabian

2018-03-01

We consider some genealogical properties of nested samples. The complete sample is assumed to have been drawn from a natural population characterised by high fecundity and sweepstakes reproduction (abbreviated HFSR). The random gene genealogies of the samples are—due to our assumption of HFSR—modelled by coalescent processes which admit multiple mergers of ancestral lineages looking back in time. Among the genealogical properties we consider are the probability that the most recent common ancestor is shared between the complete sample and the subsample nested within the complete sample; we also compare the lengths of `internal' branches of nested genealogies between different coalescent processes. The results indicate how `informative' a subsample is about the properties of the larger complete sample, how much information is gained by increasing the sample size, and how the `informativeness' of the subsample varies between different coalescent processes.

Narrative Reflection in the Philosophy of Teaching: Genealogies and Portraits

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McEwan, Hunter

2011-01-01

How has philosophical reflection contributed to the ways that we think about teaching? In this paper I explore two forms of narrative reflection on teaching--genealogies and portraits. Genealogies tell a story about the origins of teaching; portraits find expression in myths and other narrative forms. I explore two genealogies of teaching--one…

Coalescent genealogy samplers: windows into population history.

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Kuhner, Mary K

2009-02-01

Coalescent genealogy samplers attempt to estimate past qualities of a population, such as its size, growth rate, patterns of gene flow or time of divergence from another population, based on samples of molecular data. Genealogy samplers are increasingly popular because of their potential to disentangle complex population histories. In the last decade they have been widely applied to systems ranging from humans to viruses. Findings include detection of unexpected reproductive inequality in fish, new estimates of historical whale abundance, exoneration of humans for the prehistoric decline of bison and inference of a selective sweep on the human Y chromosome. This review summarizes available genealogy-sampler software, including data requirements and limitations on the use of each program.

Legendary genealogies of Byzantine Emperors and their families

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Krsmanović Bojana T.

2004-01-01

Full Text Available Theoretically, the Byzantine Emperor was, just like in the times of the Roman Empire, chosen on the basis of his personal qualities and merits — by the grace of God, of course. Practically, the factors which determined the ascension of a person to the throne were much more complex, the methods of gaining power being multifarious. In consequence, the political philosophy was confronted with the question of whether it is virtue (aretç or origin (génoz that defines an Emperor. Independently of this rather theoretical question, however, and despite the claims that the personal qualities are decisive in the choice of the Emperor, the origin of the ruler played an important role in the consciousness of the Byzantines of all epochs. This is why great attention was paid to the creation of family trees, especially in the cases when the Emperor was of low origin (homo novus or when it was for some reason necessary to strengthen his legitimacy. The choice of the genealogy was not random: since it carried a clear political message, it was of utmost importance with whom the Emperor in power would be associated and whose historical deeds or legendary personality would serve as a moral model. Also important is the fact that the search of a "good family" was as a rule triggered by the need to confirm one's own virtue. Thus, genealogies often reflect a certain system of values, usually emphasizing morality, courage in war, care for the welfare of the country, piety, etc. The choice of the archetype depended, of course, on the needs of the ruler for whom the genealogy was created. All this allows us to consider legendary genealogies as an expression of the imperial ideology. Notwithstanding their chronological diversity, the Byzantine imperial genealogies display very similar characteristics, i.e. they contain stereotypical elements, many of which had been established already in the first centuries of the Eastern Empire. In the early Byzantine period, when

Genealogical relationships between early medieval and modern inhabitants of Piedmont.

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Vai, Stefania; Ghirotto, Silvia; Pilli, Elena; Tassi, Francesca; Lari, Martina; Rizzi, Ermanno; Matas-Lalueza, Laura; Ramirez, Oscar; Lalueza-Fox, Carles; Achilli, Alessandro; Olivieri, Anna; Torroni, Antonio; Lancioni, Hovirag; Giostra, Caterina; Bedini, Elena; Pejrani Baricco, Luisella; Matullo, Giuseppe; Di Gaetano, Cornelia; Piazza, Alberto; Veeramah, Krishna; Geary, Patrick; Caramelli, David; Barbujani, Guido

2015-01-01

In the period between 400 to 800 AD, also known as the period of the Barbarian invasions, intense migration is documented in the historical record of Europe. However, little is known about the demographic impact of these historical movements, potentially ranging from negligible to substantial. As a pilot study in a broader project on Medieval Europe, we sampled 102 specimens from 5 burial sites in Northwestern Italy, archaeologically classified as belonging to Lombards or Longobards, a Germanic people ruling over a vast section of the Italian peninsula from 568 to 774. We successfully amplified and typed the mitochondrial hypervariable region I (HVR-I) of 28 individuals. Comparisons of genetic diversity with other ancient populations and haplotype networks did not suggest that these samples are heterogeneous, and hence allowed us to jointly compare them with three isolated contemporary populations, and with a modern sample of a large city, representing a control for the effects of recent immigration. We then generated by serial coalescent simulations 16 millions of genealogies, contrasting a model of genealogical continuity with one in which the contemporary samples are genealogically independent from the medieval sample. Analyses by Approximate Bayesian Computation showed that the latter model fits the data in most cases, with one exception, Trino Vercellese, in which the evidence was compatible with persistence up to the present time of genetic features observed among this early medieval population. We conclude that it is possible, in general, to detect evidence of genealogical ties between medieval and specific modern populations. However, only seldom did mitochondrial DNA data allow us to reject with confidence either model tested, which indicates that broader analyses, based on larger assemblages of samples and genetic markers, are needed to understand in detail the effects of medieval migration.

Genealogical relationships between early medieval and modern inhabitants of Piedmont.

Directory of Open Access Journals (Sweden)

Stefania Vai

Full Text Available In the period between 400 to 800 AD, also known as the period of the Barbarian invasions, intense migration is documented in the historical record of Europe. However, little is known about the demographic impact of these historical movements, potentially ranging from negligible to substantial. As a pilot study in a broader project on Medieval Europe, we sampled 102 specimens from 5 burial sites in Northwestern Italy, archaeologically classified as belonging to Lombards or Longobards, a Germanic people ruling over a vast section of the Italian peninsula from 568 to 774. We successfully amplified and typed the mitochondrial hypervariable region I (HVR-I of 28 individuals. Comparisons of genetic diversity with other ancient populations and haplotype networks did not suggest that these samples are heterogeneous, and hence allowed us to jointly compare them with three isolated contemporary populations, and with a modern sample of a large city, representing a control for the effects of recent immigration. We then generated by serial coalescent simulations 16 millions of genealogies, contrasting a model of genealogical continuity with one in which the contemporary samples are genealogically independent from the medieval sample. Analyses by Approximate Bayesian Computation showed that the latter model fits the data in most cases, with one exception, Trino Vercellese, in which the evidence was compatible with persistence up to the present time of genetic features observed among this early medieval population. We conclude that it is possible, in general, to detect evidence of genealogical ties between medieval and specific modern populations. However, only seldom did mitochondrial DNA data allow us to reject with confidence either model tested, which indicates that broader analyses, based on larger assemblages of samples and genetic markers, are needed to understand in detail the effects of medieval migration.

The effect of genealogy-based haplotypes on genomic prediction

DEFF Research Database (Denmark)

Edriss, Vahid; Fernando, Rohan L.; Su, Guosheng

2013-01-01

on haplotypes instead of regression on individual markers. The aim of this study was to investigate the accuracy of genomic prediction using haplotypes based on local genealogy information. Methods A total of 4429 Danish Holstein bulls were genotyped with the 50K SNP chip. Haplotypes were constructed using...... local genealogical trees. Effects of haplotype covariates were estimated with two types of prediction models: (1) assuming that effects had the same distribution for all haplotype covariates, i.e. the GBLUP method and (2) assuming that a large proportion (pi) of the haplotype covariates had zero effect......, i.e. a Bayesian mixture method. Results About 7.5 times more covariate effects were estimated when fitting haplotypes based on local genealogical trees compared to fitting individuals markers. Genealogy-based haplotype clustering slightly increased the accuracy of genomic prediction and, in some...

Office and Agamben's Genealogy of Economy and Government

DEFF Research Database (Denmark)

Dean, Mitchell

2017-01-01

This paper locates Giorgio Agamben’s book Opus Dei in his larger Homo Sacer project and particularly a series of genealogical and archaeological studies within it. It argues for a disenchanted and dispersed reading of Agamben’s approach to office as a resource for concerns that are germane...... for office. More broadly, Agamben’s work on office is shown to bear upon questions of the constitution of sovereignty and government as forms of power, on different forms of rationalisation, and themes of secularisation and modernity found in classical sociology and intellectual history....

The genealogy of samples in models with selection.

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Neuhauser, C; Krone, S M

1997-02-01

We introduce the genealogy of a random sample of genes taken from a large haploid population that evolves according to random reproduction with selection and mutation. Without selection, the genealogy is described by Kingman's well-known coalescent process. In the selective case, the genealogy of the sample is embedded in a graph with a coalescing and branching structure. We describe this graph, called the ancestral selection graph, and point out differences and similarities with Kingman's coalescent. We present simulations for a two-allele model with symmetric mutation in which one of the alleles has a selective advantage over the other. We find that when the allele frequencies in the population are already in equilibrium, then the genealogy does not differ much from the neutral case. This is supported by rigorous results. Furthermore, we describe the ancestral selection graph for other selective models with finitely many selection classes, such as the K-allele models, infinitely-many-alleles models. DNA sequence models, and infinitely-many-sites models, and briefly discuss the diploid case.

An interactive, web-based tool for genealogical entity resolution

NARCIS (Netherlands)

Efremova, I.; Ranjbar-Sahraei, B.; Oliehoek, F.A.; Calders, T.G.K.; Tuyls, K.P.

2013-01-01

We demonstrate an interactive, web-based tool which helps historians to do Genealogical Entitiy Resolution. This work has two main goals. First, it uses Machine Learning (ML) algorithms to assist humanites researchers to perform Genealogical Entity Resolution. Second, it facilitates the generation

The effect of using genealogy-based haplotypes for genomic prediction.

Science.gov (United States)

Edriss, Vahid; Fernando, Rohan L; Su, Guosheng; Lund, Mogens S; Guldbrandtsen, Bernt

2013-03-06

Genomic prediction uses two sources of information: linkage disequilibrium between markers and quantitative trait loci, and additive genetic relationships between individuals. One way to increase the accuracy of genomic prediction is to capture more linkage disequilibrium by regression on haplotypes instead of regression on individual markers. The aim of this study was to investigate the accuracy of genomic prediction using haplotypes based on local genealogy information. A total of 4429 Danish Holstein bulls were genotyped with the 50K SNP chip. Haplotypes were constructed using local genealogical trees. Effects of haplotype covariates were estimated with two types of prediction models: (1) assuming that effects had the same distribution for all haplotype covariates, i.e. the GBLUP method and (2) assuming that a large proportion (π) of the haplotype covariates had zero effect, i.e. a Bayesian mixture method. About 7.5 times more covariate effects were estimated when fitting haplotypes based on local genealogical trees compared to fitting individuals markers. Genealogy-based haplotype clustering slightly increased the accuracy of genomic prediction and, in some cases, decreased the bias of prediction. With the Bayesian method, accuracy of prediction was less sensitive to parameter π when fitting haplotypes compared to fitting markers. Use of haplotypes based on genealogy can slightly increase the accuracy of genomic prediction. Improved methods to cluster the haplotypes constructed from local genealogy could lead to additional gains in accuracy.

Genetic genealogy: the Woodson family's experience.

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Williams, Sloan R

2005-06-01

In 1998, Foster and colleagues published the results of a genetic study intended to test whether Thomas Jefferson could have fathered any of Sally Hemings' children. They found that the Jefferson Y chromosome haplotype matched that of a descendant of Hemings' youngest child, but not that of the descendants of the eldest son, Thomas Woodson. The Woodson descendants were shocked by the study's finding, which disagreed with their family oral history. They were suspicious of the study conclusions because of the methods used in recruiting participants for the study and the manner in which they learned of the results. The Woodsons' experience as participants in one of the first examples of genetic genealogy illustrates several issues that both geneticists and amateur genetic genealogists will face in studies of this kind. Misperceptions about the relationship between biology and race, and group genetics in general, can make the interpretation of genetic data difficult. Continuing collaborations between the media and the scientific community will help the public to better understand the risks as well as the benefits of genetic genealogy. Researchers must decide prior to beginning their research what role the human subjects will play in the study and when they will be notified of the study's conclusions. Amateur genetic genealogists should anticipate unexpected outcomes, such as the identification of nonpaternity, to minimize any harmful effects to study participants. Although modern genetic methods provide a powerful new tool for genealogical study, they cannot resolve all genealogical issues, as this study shows, and can involve unanticipated risks to the participants.

Genealogical and evolutionary inference with the human Y chromosome.

Science.gov (United States)

Stumpf, M P; Goldstein, D B

2001-03-02

Population genetics has emerged as a powerful tool for unraveling human history. In addition to the study of mitochondrial and autosomal DNA, attention has recently focused on Y-chromosome variation. Ambiguities and inaccuracies in data analysis, however, pose an important obstacle to further development of the field. Here we review the methods available for genealogical inference using Y-chromosome data. Approaches can be divided into those that do and those that do not use an explicit population model in genealogical inference. We describe the strengths and weaknesses of these model-based and model-free approaches, as well as difficulties associated with the mutation process that affect both methods. In the case of genealogical inference using microsatellite loci, we use coalescent simulations to show that relatively simple generalizations of the mutation process can greatly increase the accuracy of genealogical inference. Because model-free and model-based approaches have different biases and limitations, we conclude that there is considerable benefit in the continued use of both types of approaches.

The Genealogical Consequences of Fecundity Variance Polymorphism

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Taylor, Jesse E.

2009-01-01

The genealogical consequences of within-generation fecundity variance polymorphism are studied using coalescent processes structured by genetic backgrounds. I show that these processes have three distinctive features. The first is that the coalescent rates within backgrounds are not jointly proportional to the infinitesimal variance, but instead depend only on the frequencies and traits of genotypes containing each allele. Second, the coalescent processes at unlinked loci are correlated with the genealogy at the selected locus; i.e., fecundity variance polymorphism has a genomewide impact on genealogies. Third, in diploid models, there are infinitely many combinations of fecundity distributions that have the same diffusion approximation but distinct coalescent processes; i.e., in this class of models, ancestral processes and allele frequency dynamics are not in one-to-one correspondence. Similar properties are expected to hold in models that allow for heritable variation in other traits that affect the coalescent effective population size, such as sex ratio or fecundity and survival schedules. PMID:19433628

Philological Remarks on Two Genealogies of the Crimean-Tatar Clan Shirin

Directory of Open Access Journals (Sweden)

Göncöl Cs.

2017-12-01

Full Text Available Objectives: Philological analysis of two genealogies of the Crimean-Tatar clan termed the Shirin, and an identification of a possible common source of these genealogies. Research materials: Two genealogies (family-trees of the most prominent clan of the Crimean Khanate, the Shirin, have survived. The earlier one was preserved in the chronicle of the ʿUmdetü l aḫbār ‘Essence of Histories’ (1748, written by ʿAbdu l Ġaffār Qırımī, a historian of the Crimean Khanate and judge on Shirin estates. The later one was presented by clan-members after 1807 to the Crimean Assembly of Nobility (Таврическое дворянское собрание for the recognition of their noble status and estates. This version was translated into Russian and published by Lashkov. Therefore, the question arises: can the two genealogies have a common source? Results and the novelty of the research: Through a philological comparison of the material, the aim of the author was to demonstrate that the genealogies of the Shirin clan show similarities in content, structure, and text. The author supposes that the texts of ʿAbdu l Ġaffār Qırımī and the genealogy preserved in Russian translation could have been compiled from the same source, perhaps a preliminary Shirin genealogy which, judging from its content, the author dates to the 1660s.

Simulation of selected genealogies.

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Slade, P F

2000-02-01

Algorithms for generating genealogies with selection conditional on the sample configuration of n genes in one-locus, two-allele haploid and diploid models are presented. Enhanced integro-recursions using the ancestral selection graph, introduced by S. M. Krone and C. Neuhauser (1997, Theor. Popul. Biol. 51, 210-237), which is the non-neutral analogue of the coalescent, enables accessible simulation of the embedded genealogy. A Monte Carlo simulation scheme based on that of R. C. Griffiths and S. Tavaré (1996, Math. Comput. Modelling 23, 141-158), is adopted to consider the estimation of ancestral times under selection. Simulations show that selection alters the expected depth of the conditional ancestral trees, depending on a mutation-selection balance. As a consequence, branch lengths are shown to be an ineffective criterion for detecting the presence of selection. Several examples are given which quantify the effects of selection on the conditional expected time to the most recent common ancestor. Copyright 2000 Academic Press.

The performance of phylogenetic algorithms in estimating haplotype genealogies with migration.

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Salzburger, Walter; Ewing, Greg B; Von Haeseler, Arndt

2011-05-01

Genealogies estimated from haplotypic genetic data play a prominent role in various biological disciplines in general and in phylogenetics, population genetics and phylogeography in particular. Several software packages have specifically been developed for the purpose of reconstructing genealogies from closely related, and hence, highly similar haplotype sequence data. Here, we use simulated data sets to test the performance of traditional phylogenetic algorithms, neighbour-joining, maximum parsimony and maximum likelihood in estimating genealogies from nonrecombining haplotypic genetic data. We demonstrate that these methods are suitable for constructing genealogies from sets of closely related DNA sequences with or without migration. As genealogies based on phylogenetic reconstructions are fully resolved, but not necessarily bifurcating, and without reticulations, these approaches outperform widespread 'network' constructing methods. In our simulations of coalescent scenarios involving panmictic, symmetric and asymmetric migration, we found that phylogenetic reconstruction methods performed well, while the statistical parsimony approach as implemented in TCS performed poorly. Overall, parsimony as implemented in the PHYLIP package performed slightly better than other methods. We further point out that we are not making the case that widespread 'network' constructing methods are bad, but that traditional phylogenetic tree finding methods are applicable to haplotypic data and exhibit reasonable performance with respect to accuracy and robustness. We also discuss some of the problems of converting a tree to a haplotype genealogy, in particular that it is nonunique. © 2011 Blackwell Publishing Ltd.

Detecting negative selection on recurrent mutations using gene genealogy

Science.gov (United States)

2013-01-01

Background Whether or not a mutant allele in a population is under selection is an important issue in population genetics, and various neutrality tests have been invented so far to detect selection. However, detection of negative selection has been notoriously difficult, partly because negatively selected alleles are usually rare in the population and have little impact on either population dynamics or the shape of the gene genealogy. Recently, through studies of genetic disorders and genome-wide analyses, many structural variations were shown to occur recurrently in the population. Such “recurrent mutations” might be revealed as deleterious by exploiting the signal of negative selection in the gene genealogy enhanced by their recurrence. Results Motivated by the above idea, we devised two new test statistics. One is the total number of mutants at a recurrently mutating locus among sampled sequences, which is tested conditionally on the number of forward mutations mapped on the sequence genealogy. The other is the size of the most common class of identical-by-descent mutants in the sample, again tested conditionally on the number of forward mutations mapped on the sequence genealogy. To examine the performance of these two tests, we simulated recurrently mutated loci each flanked by sites with neutral single nucleotide polymorphisms (SNPs), with no recombination. Using neutral recurrent mutations as null models, we attempted to detect deleterious recurrent mutations. Our analyses demonstrated high powers of our new tests under constant population size, as well as their moderate power to detect selection in expanding populations. We also devised a new maximum parsimony algorithm that, given the states of the sampled sequences at a recurrently mutating locus and an incompletely resolved genealogy, enumerates mutation histories with a minimum number of mutations while partially resolving genealogical relationships when necessary. Conclusions With their

The influence of Missouri mathematics project on seventh grade students’ mathematical understanding ability

Science.gov (United States)

Rezeki, S.; Setyawan, A. A.; Amelia, S.

2018-01-01

Mathematical understanding ability is a primary goal of Indonesian national education goals. However, various sources has shown that Indonesian students’ mathematical understanding ability is still relatively low. This study used quasi-experimental research design to examine the effectiveness of the application of Missouri Mathematics Project (MMP) on students’ mathematical understanding ability. The participants of the study were seventh grade students in Pekanbaru, Riau Province, Indonesia. They were selected purposively and represented as high, medium, and low-quality schools. The result of this study indicated that there was a significant effect of MMP on the overall students’ mathematical understanding ability and in all categories, except for low school level.

Bio science: genetic genealogy testing and the pursuit of African ancestry.

Science.gov (United States)

Nelson, Alondra

2008-10-01

This paper considers the extent to which the geneticization of 'race' and ethnicity is the prevailing outcome of genetic testing for genealogical purposes. The decoding of the human genome precipitated a change of paradigms in genetics research, from an emphasis on genetic similarity to a focus on molecular-level differences among individuals and groups. This shift from lumping to splitting spurred ongoing disagreements among scholars about the significance of 'race' and ethnicity in the genetics era. I characterize these divergent perspectives as 'pragmatism' and 'naturalism'. Drawing upon ethnographic fieldwork and interviews, I argue that neither position fully accounts for how understandings of 'race' and ethnicity are being transformed with genetic genealogy testing. While there is some acquiescence to genetic thinking about ancestry, and by implication, 'race', among African-American and black British consumers of genetic genealogy testing, test-takers also adjudicate between sources of genealogical information and from these construct meaningful biographical narratives. Consumers engage in highly situated 'objective' and 'affiliative' self-fashioning, interpreting genetic test results in the context of their 'genealogical aspirations'. I conclude that issues of site, scale, and subjectification must be attended to if scholars are to understand whether and to what extent social identities are being transformed by recent developments in genetic science.

Single and simultaneous binary mergers in Wright-Fisher genealogies.

Science.gov (United States)

Melfi, Andrew; Viswanath, Divakar

2018-05-01

The Kingman coalescent is a commonly used model in genetics, which is often justified with reference to the Wright-Fisher (WF) model. Current proofs of convergence of WF and other models to the Kingman coalescent assume a constant sample size. However, sample sizes have become quite large in human genetics. Therefore, we develop a convergence theory that allows the sample size to increase with population size. If the haploid population size is N and the sample size is N 1∕3-ϵ , ϵ>0, we prove that Wright-Fisher genealogies involve at most a single binary merger in each generation with probability converging to 1 in the limit of large N. Single binary merger or no merger in each generation of the genealogy implies that the Kingman partition distribution is obtained exactly. If the sample size is N 1∕2-ϵ , Wright-Fisher genealogies may involve simultaneous binary mergers in a single generation but do not involve triple mergers in the large N limit. The asymptotic theory is verified using numerical calculations. Variable population sizes are handled algorithmically. It is found that even distant bottlenecks can increase the probability of triple mergers as well as simultaneous binary mergers in WF genealogies. Copyright © 2018 Elsevier Inc. All rights reserved.

Host specificity and genealogy of Polyplax serrata on Apodemus species: a case of parasite duplication or colonisation?

Czech Academy of Sciences Publication Activity Database

Štefka, Jan; Hypša, Václav

2008-01-01

Roč. 38, č. 6 (2008), s. 731-741 ISSN 0020-7519 R&D Projects: GA MŠk LC06073 Institutional research plan: CEZ:AV0Z60220518 Keywords : parasite duplication * host specificity * genealogy * speciation * Polyplax * Apodemus Subject RIV: EH - Ecology, Behaviour Impact factor: 3.752, year: 2008

Emancipating Intellectual Property from Proprietarianism: Drahos, Foucault, and a Quasi-Genealogy of IP

Directory of Open Access Journals (Sweden)

Wendyl Luna

2018-01-01

Full Text Available This paper argues that Peter Drahos undertakes a partial Foucauldian genealogy by emancipating intellectual property (IP from proprietarianism. He demonstrates the dominance of proprietarianism in IP by drawing sample practices from trademark, copyright, and patent laws, and then seeks to displace the proprietarian dominance with instrumentalism, which reconstitutes IP as a “liberty-intruding privilege.” Ironically, despite doing a genealogy, Drahos does not eradicate sovereignty altogether as Michel Foucault insists, but instead determines IP as a “sovereignty mechanism” that has a “sovereignty effect.” After explaining what Foucauldian genealogy is, the paper will explain how Drahos undertakes a genealogy of IP, while highlighting the limitations of Drahos’ analysis from a Foucauldian perspective.

Genealogies in simple models of evolution

International Nuclear Information System (INIS)

Brunet, Éric; Derrida, Bernard

2013-01-01

We review the statistical properties of the genealogies of a few models of evolution. In the asexual case, selection leads to coalescence times which grow logarithmically with the size of the population, in contrast with the linear growth of the neutral case. Moreover for a whole class of models, the statistics of the genealogies are those of the Bolthausen–Sznitman coalescent rather than the Kingman coalescent in the neutral case. For sexual reproduction in the neutral case, the time to reach the first common ancestors for the whole population and the time for all individuals to have all their ancestors in common are also logarithmic in the population size, as predicted by Chang in 1999. We discuss how these times are modified by introducing selection in a simple way. (paper)

Mathematical Representation Ability by Using Project Based Learning on the Topic of Statistics

Science.gov (United States)

Widakdo, W. A.

2017-09-01

Seeing the importance of the role of mathematics in everyday life, mastery of the subject areas of mathematics is a must. Representation ability is one of the fundamental ability that used in mathematics to make connection between abstract idea with logical thinking to understanding mathematics. Researcher see the lack of mathematical representation and try to find alternative solution to dolve it by using project based learning. This research use literature study from some books and articles in journals to see the importance of mathematical representation abiliy in mathemtics learning and how project based learning able to increase this mathematical representation ability on the topic of Statistics. The indicators for mathematical representation ability in this research classifies namely visual representation (picture, diagram, graph, or table); symbolize representation (mathematical statement. Mathematical notation, numerical/algebra symbol) and verbal representation (written text). This article explain about why project based learning able to influence student’s mathematical representation by using some theories in cognitive psychology, also showing the example of project based learning that able to use in teaching statistics, one of mathematics topic that very useful to analyze data.

The effect of Missouri mathematics project learning model on students’ mathematical problem solving ability

Science.gov (United States)

Handayani, I.; Januar, R. L.; Purwanto, S. E.

2018-01-01

This research aims to know the influence of Missouri Mathematics Project Learning Model to Mathematical Problem-solving Ability of Students at Junior High School. This research is a quantitative research and uses experimental research method of Quasi Experimental Design. The research population includes all student of grade VII of Junior High School who are enrolled in the even semester of the academic year 2016/2017. The Sample studied are 76 students from experimental and control groups. The sampling technique being used is cluster sampling method. The instrument is consisted of 7 essay questions whose validity, reliability, difficulty level and discriminating power have been tested. Before analyzing the data by using t-test, the data has fulfilled the requirement for normality and homogeneity. The result of data shows that there is the influence of Missouri mathematics project learning model to mathematical problem-solving ability of students at junior high school with medium effect.

Developing Mathematical Literacy through project work: A teacher/teaching perspective

Directory of Open Access Journals (Sweden)

Renuka Vithal

2006-10-01

Full Text Available The implementation of the new Mathematical Literacy curriculum in South Africa is assuming several different conceptions of mathematics and therefore also being realised through a range of different pedagogies. In this paper I begin from a particular privileging of a critical perspective in mathematics education, which I argue is one (among others of the forces shaping the new South African curriculum reforms, particularly the Mathematical Literacy curriculum. If so, then the case for a specific pedagogy, that of project work, can be shown to support the development of a mathematical literacy from a critical perspective. In this paper a particular set of conceptual tools, principles and practices associated with project work, as developed in the Scandanavian context but researched in South Africa, are elaborated from the perspective of teachers/teaching of mathematical literacy.

Digitization Projects Carried out by the Mathematical Institute Belgrade

OpenAIRE

Ognjanovič, Zoran; Mijajlovič, Žarco

2004-01-01

In this paper some current digitization projects carried out by the Mathematical Institute of Serbian Academy of Science and Arts Belgrade and the Faculty of Mathematics Belgrade are described. The projects concern developing of a virtual library of retro-digitized books and an Internet data base and presentation of electronic editions of some leading Serbian journals in science and arts, and the work on the South-Eastern European Digitization Initiative (SEEDI).

Genealogy and stability of periodic orbit families around uniformly rotating asteroids

Science.gov (United States)

Hou, Xiyun; Xin, Xiaosheng; Feng, Jinglang

2018-03-01

Resonance orbits around a uniformly rotating asteroid are studied from the approach of periodic orbits in this work. Three periodic families (denoted as I, II, and III in the paper) are fundamental in organizing the resonance families. For the planar case: (1) Genealogy and stability of Families I, II and the prograde resonance families are studied. For extremely irregular asteroids, family genealogy close to the asteroid is greatly distorted from that of the two body-problem (2BP), indicating that it is inappropriate to treat the orbital motions as perturbed Keplerian orbits. (2) Genealogy and stability of Family III are also studied. Stability of this family may be destroyed by the secular resonance between the orbital ascending node's precession and the asteroid's rotation. For the spatial case: (1) Genealogy of the near circular three-dimensional periodic families are studied. The genealogy may be broken apart by families of eccentric frozen orbits whose argument of perigee is ;frozen; in space. (2) The joint effects between the secular resonance and the orbital resonances may cause instability to three-dimensional orbital motion with orbit inclinations close to the critical values. Applying the general methodology to a case study - the asteroid Eros and also considering higher order non-spherical terms, some extraordinary orbits are found, such as the ones with orbital plane co-rotating with the asteroid, and the stable frozen orbits with argument of perigee librating around values different from 0°, 90°, 180°, 270°.

Genealogy as a critical toolbox: deconstructing the professional identity of nurses.

Science.gov (United States)

Miró-Bonet, Margalida; Bover-Bover, Andreu; Moreno-Mulet, Cristina; Miró-Bonet, Rosa; Zaforteza-Lallemand, Concha

2014-04-01

To discuss the Foucauldian concept of genealogy as a framework for understanding and transforming nurses' professional identity. The professional identity of nurses has primarily been defined by personal and interpersonal attributes and by the intradisciplinary dimensions of nursing, leading to its conceptualization as a universal, monolithic phenomenon. The Foucauldian genealogical perspective offers a critical lens to examine what constitutes this professional identity; Spanish nursing offers a historical case study of an active effort to impose an identity that fits the monolithic ideal. Five of the 33 professional conduct manuals for nurses' training published from 1956-1976 during the Franco dictatorship in Spain and six interviews with nursing instructors or students at the time were analysed using a theoretical framework drawn from Foucault's writing. Foucault's genealogical framework considers practices of normalization and resistance as a means of understanding knowledge continuities and discontinuities, clarifying practices that constitute nurses' professional identity in a particular way in specific contexts and analysing the implications of this theoretical frame. The genealogy concept offers valuable tools to determine how professional identities are constituted, questions assumptions about the profession and its professionals and envisions alternative approaches. This theoretical approach helps both scholars and practitioners understand, question and transform their practices as needed. The genealogical approach prioritizes analysis of the phenomenon over its description and challenges many unknown, forgotten, excluded and/or unquestioned aspects of identity from a position of diversity and complexity. © 2013 John Wiley & Sons Ltd.

Research Progress in Mathematical Analysis of Map Projection by Computer Algebra

Directory of Open Access Journals (Sweden)

BIAN Shaofeng

2017-10-01

Full Text Available Map projection is an important component of modern cartography, and involves many fussy mathematical analysis processes, such as the power series expansions of elliptical functions, differential of complex and implicit functions, elliptical integral and the operation of complex numbers. The derivation of these problems by hand not only consumes much time and energy but also makes mistake easily, and sometimes can not be realized at all because of the impossible complexity. The research achievements in mathematical analysis of map projection by computer algebra are systematically reviewed in five aspects, i.e., the symbolic expressions of forward and inverse solution of ellipsoidal latitudes, the direct transformations between map projections with different distortion properties, expressions of Gauss projection by complex function, mathematical analysis of oblique Mercator projection, polar chart projection with its transformation. Main problems that need to be further solved in this research field are analyzed. It will be helpful to promote the development of map projection.

Generation of genealogical spin eigenfunctions

International Nuclear Information System (INIS)

Grabenstetter, J.E.; Tseng, T.J.; Grein, F.

1976-01-01

A method is given for generating the Yamanouchi-Kotani genealogical spin eigenfunctions which requires neither storage of eigenfunctions for smaller numbers of electrons, nor summations of large order, nor explicit use of results from the theory of representations of the symmetric group. An explicit formula is given for the coefficients of expansion in terms of spin products

[Genealogy of the Meckel anatomy family (from Hem[b]sbach)].

Science.gov (United States)

Viebig, Michael; Schultka, Rüdiger

2002-11-01

The main goal of our investigations is to complete the genealogy of the famous Meckel dynasty. It is important to answer a lot of questions which have remained unanswered until now. During the investigations we were able to find the names of three children who died early and were dissected by their father Philipp Friedrich Theodor Meckel (1755-1803). Besides, it was possible to extend distinctly our knowledge of the various genealogical lines of the Meckel family.

Kinship and Beyond: The Genealogical Model Reconsidered

Directory of Open Access Journals (Sweden)

Ryan Schram

2010-08-01

Full Text Available Review of Kinship and Beyond: The Genealogical Model Reconsidered. Sandra Bamford and James Leach, eds. 2009. Berghahn Books, New York. 292 pp., 21 illustrations, bibliography, index. $95.00 (hardback. ISBN 9781845454227.

Genealogical information and the structure of rural Latin-American populations: reality and fantasy.

Science.gov (United States)

Castilla, E E; Adams, J

1996-01-01

Genetic data organized in the form of genealogies can provide much information regarding the history and genetic structure of human populations. A large proportion of the population of Latin America is organized in small rural semi-isolated communities, with little immigration, and until the last 50-100 years, little emigration. These communities have a strong sense of their genealogical history, and this "genealogical conscience' is a frequent leitmotif in modern Latin-American literature. In this communication, we compare the characteristics of fictitious genealogies described in two masterpieces of Latin-American literature, García Márquez' Cien Años de Soledad (A Hundred Years of Solitude), and Verissimo's O Tempo e o Vento (Time and the Wind), with one existing well-studied population in Argentina, Aicuña. All three populations exhibit a number of common characteristics, such as histories of long periods of civil war, and large pedigrees with complex paths of inheritance resulting in complex patterns of inbreeding. Genetic themes common to all three are: (1) the use of genealogical records to substantiate the property of the land or the political power of a kinship; (2) the genealogical registry of biological descendants, independent of their legal or marital status in the clan; (3) the existence of pedigrees of the aristocratic branches in the same kindreds, which illustrate the legal principle of primogeniture; (4) the value of last names as indicators of kinships and the extent of genetic isolation, and (5) the awareness of the deleterious consequences of consanguinity.

Probabilistic models of population evolution scaling limits, genealogies and interactions

CERN Document Server

Pardoux, Étienne

2016-01-01

This expository book presents the mathematical description of evolutionary models of populations subject to interactions (e.g. competition) within the population. The author includes both models of finite populations, and limiting models as the size of the population tends to infinity. The size of the population is described as a random function of time and of the initial population (the ancestors at time 0). The genealogical tree of such a population is given. Most models imply that the population is bound to go extinct in finite time. It is explained when the interaction is strong enough so that the extinction time remains finite, when the ancestral population at time 0 goes to infinity. The material could be used for teaching stochastic processes, together with their applications. Étienne Pardoux is Professor at Aix-Marseille University, working in the field of Stochastic Analysis, stochastic partial differential equations, and probabilistic models in evolutionary biology and population genetics. He obtai...

Foucault's genealogy of Christianity

OpenAIRE

Chrulew, Matthew Nikolai

2017-01-01

This thesis is an exploration of Michel Foucault's genealogy of Christianity. I argue that this important and under-appreciated aspect of his work is strongly influenced by Nietzsche's own anti-Christian writings on asceticism, priestly power and the death of God. Based on the texts currently available, I explicate in detail Foucault's perpetual and often ambivalent return to the confessional and pastoral apparatuses of the Church. I also explore how this work might relate to broader and incr...

Conditional Genealogies and the Age of a Neutral Mutant

DEFF Research Database (Denmark)

Wiuf, Carsten; Donelly, P

1999-01-01

This paper is concerned with the structure of the genealogy of a sample in which it is observed that some subset of chromosomes carries a particular mutation, assumed to have arisen uniquely in the history of the population. A rigorous theoretical study of this conditional genealogy is given using...... coalescent methods. Particular results include the mean, variance, and density of the age of the mutation conditional on its frequency in the sample. Most of the development relates to populations of constant size, but we discuss the extension to populations which have grown exponentially to their present...

"Lolita": Genealogy of a Cover Girl

Science.gov (United States)

Savage, Shari L.

2015-01-01

At the publication of Vladimir Nabokov's controversial novel "Lolita" (1958), the author insisted that a girl never appear on the cover. This discourse analysis of 185 "Lolita" book covers, most of which feature a girl, considers the genealogy of "Lolita" in relation to representation, myth, and tacit knowledge…

The Color of Giftedness: A Policy Genealogy Implicating Educators Past, Present, and Future

Science.gov (United States)

Mansfield, Katherine Cumings

2016-01-01

This article offers a critical rereading of gifted education in the United States using a genealogical framework as defined by postcolonial theory. Using genealogy is appropriate because it sets the education profession within a family research tradition, implies the close connection between past and present, and enables us to systematically trace…

Fitchi: haplotype genealogy graphs based on the Fitch algorithm.

Science.gov (United States)

Matschiner, Michael

2016-04-15

: In population genetics and phylogeography, haplotype genealogy graphs are important tools for the visualization of population structure based on sequence data. In this type of graph, node sizes are often drawn in proportion to haplotype frequencies and edge lengths represent the minimum number of mutations separating adjacent nodes. I here present Fitchi, a new program that produces publication-ready haplotype genealogy graphs based on the Fitch algorithm. http://www.evoinformatics.eu/fitchi.htm : michaelmatschiner@mac.com Supplementary data are available at Bioinformatics online. © The Author 2015. Published by Oxford University Press. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com.

Two Project-Based Strategies in an Interdisciplinary Mathematical Modeling in Biology Course

Science.gov (United States)

Ludwig, Patrice; Tongen, Anthony; Walton, Brian

2018-01-01

James Madison University faculty team-teach an interdisciplinary mathematical modeling course for mathematics and biology students. We have used two different project-based approaches to emphasize the mathematical concepts taught in class, while also exposing students to new areas of mathematics not formally covered in class. The first method…

Towards a complete North American Anabaptist Genealogy II: analysis of inbreeding.

Science.gov (United States)

Agarwala, R; Schäffer, A A; Tomlin, J F

2001-08-01

We describe a large genealogy data base, which can be searched by computer, of 295,095 Amish and Mennonite individuals. The data base was constructed by merging our existing Anabaptist Genealogy Database 2.0 containing approximately 85,000 individuals with a genealogy file containing approximately 242,000 individuals, kindly provided by Mr. James Hostetler. The merging process corrected thousands of inconsistencies and eliminated hundreds of duplicate individuals. Geneticists have long been interested in Anabaptist populations because they are closed and have detailed written genealogies. The creation of an enlarged and unified data base affords the opportunity to examine inbreeding trends and correlates in these populations. We show the following results. The frequency of consanguineous marriages shows steady increase over time and reached approximately 85% for individuals born in 1940-1959. Among consanguineous marriages, the median kinship coefficient stayed stable in the 19th century, but rose from 0.0115 to 0.0151 in the 20th century. There are statistically significant associations (p < 0.0001) between inbreeding and family size and interbirth intervals in the 20th century. There is an association (p < 0.0005) between inbreeding and early death for individuals born in 1920-1959. However, this association reverses dramatically (p < 0.0005 in the opposite direction) for individuals born in 1960-1979. We tested for an association between inbreeding and being the mother of twins, but found none.

A Genealogical Look at Shared Ancestry on the X Chromosome.

Science.gov (United States)

Buffalo, Vince; Mount, Stephen M; Coop, Graham

2016-09-01

Close relatives can share large segments of their genome identical by descent (IBD) that can be identified in genome-wide polymorphism data sets. There are a range of methods to use these IBD segments to identify relatives and estimate their relationship. These methods have focused on sharing on the autosomes, as they provide a rich source of information about genealogical relationships. We hope to learn additional information about recent ancestry through shared IBD segments on the X chromosome, but currently lack the theoretical framework to use this information fully. Here, we fill this gap by developing probability distributions for the number and length of X chromosome segments shared IBD between an individual and an ancestor k generations back, as well as between half- and full-cousin relationships. Due to the inheritance pattern of the X and the fact that X homologous recombination occurs only in females (outside of the pseudoautosomal regions), the number of females along a genealogical lineage is a key quantity for understanding the number and length of the IBD segments shared among relatives. When inferring relationships among individuals, the number of female ancestors along a genealogical lineage will often be unknown. Therefore, our IBD segment length and number distributions marginalize over this unknown number of recombinational meioses through a distribution of recombinational meioses we derive. By using Bayes' theorem to invert these distributions, we can estimate the number of female ancestors between two relatives, giving us details about the genealogical relations between individuals not possible with autosomal data alone. Copyright © 2016 by the Genetics Society of America.

Genetic genealogy comes of age: perspectives on the use of deep-rooted pedigrees in human population genetics.

Science.gov (United States)

Larmuseau, M H D; Van Geystelen, A; van Oven, M; Decorte, R

2013-04-01

In this article, we promote the implementation of extensive genealogical data in population genetic studies. Genealogical records can provide valuable information on the origin of DNA donors in a population genetic study, going beyond the commonly collected data such as residence, birthplace, language, and self-reported ethnicity. Recent studies demonstrated that extended genealogical data added to surname analysis can be crucial to detect signals of (past) population stratification and to interpret the population structure in a more objective manner. Moreover, when in-depth pedigree data are combined with haploid markers, it is even possible to disentangle signals of temporal differentiation within a population genetic structure during the last centuries. Obtaining genealogical data for all DNA donors in a population genetic study is a labor-intensive task but the vastly growing (genetic) genealogical databases, due to the broad interest of the public, are making this job more time-efficient if there is a guarantee for sufficient data quality. At the end, we discuss the advantages and pitfalls of using genealogy within sampling campaigns and we provide guidelines for future population genetic studies. Copyright © 2013 Wiley Periodicals, Inc.

The Total Somali Clan Genealogy (second edition)

NARCIS (Netherlands)

Abbink, G.J.

2009-01-01

This paper presents an updated genealogy of all Somali 'clans'. Somali kinship is based on patrilineal descent or 'tol', but there are no equivalents in the Somali language for the words 'clan' and 'lineage'. The Somali terminology for the levels of social segmentation is complex, amongst others

Modelling students' knowledge organisation: Genealogical conceptual networks

Science.gov (United States)

Koponen, Ismo T.; Nousiainen, Maija

2018-04-01

Learning scientific knowledge is largely based on understanding what are its key concepts and how they are related. The relational structure of concepts also affects how concepts are introduced in teaching scientific knowledge. We model here how students organise their knowledge when they represent their understanding of how physics concepts are related. The model is based on assumptions that students use simple basic linking-motifs in introducing new concepts and mostly relate them to concepts that were introduced a few steps earlier, i.e. following a genealogical ordering. The resulting genealogical networks have relatively high local clustering coefficients of nodes but otherwise resemble networks obtained with an identical degree distribution of nodes but with random linking between them (i.e. the configuration-model). However, a few key nodes having a special structural role emerge and these nodes have a higher than average communicability betweenness centralities. These features agree with the empirically found properties of students' concept networks.

Genealogical analyses in open populations: the case of three Arab-derived Spanish horse breeds.

Science.gov (United States)

Cervantes, I; Gutiérrez, J P; Molina, A; Goyache, F; Valera, M

2009-10-01

This research assesses the genetic composition of three Arab-derived Spanish horse breeds as an example to highlight the major shortcomings related to genealogical analyses in open populations and to propose approaches useful to deal with this task. The studbooks of three Spanish Arab (SA)-derived horse breeds, Spanish Anglo-Arab (dAA), Hispano-Arab (dHA) and Spanish Sport Horse (dSSH) and those of their parental breeds SA, Spanish Purebred (SPB) and Thoroughbred (TB), totalling 211 754 individuals, were available. The genealogies of the dAA, dHA and dSSH were analysed not only using the corresponding studbook (breed exclusive dataset) but also including the genealogies of the founders from parental breeds (completed dataset). Coancestry analyses revealed that the present SA-derived populations share more genes with the Arab than with the other parental breeds. Effective population size was computed by accounting for migration rates to obtain an equivalent closed-population effective size ((eq)N(e)) of 39.2 for the dAA, 56.3 for dHA and 114.1 for dSSH. The essayed methodologies were useful for characterising populations involving migration. The consequences of the management of the analysed breeds are discussed. The results emphasize the need to include the complete genealogies of the individuals to attain reliable genealogical parameters.

Mathematical Modeling Projects: Success for All Students

Science.gov (United States)

Shelton, Therese

2018-01-01

Mathematical modeling allows flexibility for a project-based experience. We share details of our regular capstone course, successful for virtually 100% of our math majors for almost two decades. Our research-like approach in this course accommodates a variety of student backgrounds and interests, and has produced some award-winning student…

A Baseline Method for Genealogical Entity Resolution

NARCIS (Netherlands)

Efremova, J.; Ranjbar-Sahraei, B.; Oliehoek, F.A.; Calders, T.; Tuyls, K.

2014-01-01

In this paper we study the application of entity resolution (ER) techniques on a real-world multi-source genealogical dataset. Our goal is to identify all persons involved in various notary acts and link them to their birth, marriage and death certificates. In order to evaluate the performance of a

"Safeguarding" Sports Coaching: Foucault, Genealogy and Critique

Science.gov (United States)

Garratt, Dean; Piper, Heather; Taylor, Bill

2013-01-01

This paper offers a genealogical account of safeguarding in sport. Drawing specifically on Foucault's work, it examines the "politics of touch" in relation to the social and historical formation of child protection policy in sports coaching. While the analysis has some resonance with the context of coaching as a whole, for illustrative…

Impact of medical academic genealogy on publication patterns: An analysis of the literature for surgical resection in brain tumor patients.

Science.gov (United States)

Hirshman, Brian R; Tang, Jessica A; Jones, Laurie A; Proudfoot, James A; Carley, Kathleen M; Marshall, Lawrence; Carter, Bob S; Chen, Clark C

2016-02-01

"Academic genealogy" refers to the linking of scientists and scholars based on their dissertation supervisors. We propose that this concept can be applied to medical training and that this "medical academic genealogy" may influence the landscape of the peer-reviewed literature. We performed a comprehensive PubMed search to identify US authors who have contributed peer-reviewed articles on a neurosurgery topic that remains controversial: the value of maximal resection for high-grade gliomas (HGGs). Training information for each key author (defined as the first or last author of an article) was collected (eg, author's medical school, residency, and fellowship training). Authors were recursively linked to faculty mentors to form genealogies. Correlations between genealogy and publication result were examined. Our search identified 108 articles with 160 unique key authors. Authors who were members of 2 genealogies (14% of key authors) contributed to 38% of all articles. If an article contained an authorship contribution from the first genealogy, its results were more likely to support maximal resection (log odds ratio = 2.74, p < 0.028) relative to articles without such contribution. In contrast, if an article contained an authorship contribution from the second genealogy, it was less likely to support maximal resection (log odds ratio = -1.74, p < 0.026). We conclude that the literature on surgical resection for HGGs is influenced by medical academic genealogies, and that articles contributed by authors of select genealogies share common results. These findings have important implications for the interpretation of scientific literature, design of medical training, and health care policy. © 2016 American Neurological Association.

The Constructed Objectivity of Mathematics and the Cognitive Subject

Science.gov (United States)

Longo, Giuseppe

Mathematics is engendered in conjunction with other forms of knowledge, physics in particular. It is a "genealogy of concepts" (Riemann), that stems from our active reconstruction of the world. Mathematics organizes space and time. It stabilizes notions and concepts as no other language, while isolating by them a few intelligible fragments of "reality" at the phenomenal level. Thus an epistemological analysis of mathematics is proposed, as a foundation that departs from and complements the logico-formal approaches: Mathematics is grounded in a formation of sense, of a congnitive and historical nature, which preceeds the explicit formulation of axioms and rules. The genesis of some conceptual invariants will be sketched (numbers, continua, infinity, proofs, etc.). From these, categories as structural invariants (objects) and "invariant preserving maps" (morphisms, functors) are derived, in a reflective equilibrium of theories that parallels our endeavour to gain knowledge of the physical world.

Genealogies and spiritualities in Genesis 4:17-22, 4:25-26, 5:1-32 ...

African Journals Online (AJOL)

The three genealogies in Genesis 4:17-22, 4:25-26 en 5:1-32 show different intentions: the first wants (amongst other purposes) to give an aetiology of the trades; the second wants to stress the importance of a new beginning; the third wants to relate Adam to Noah. Each of these approaches to genealogy has a different ...

Glottochronology as a heuristic for genealogical language relationships

NARCIS (Netherlands)

Wichmann, S.; Holman, E.W.; Müller, A.; Velupillai, V.; List, J.-M.; Belyaev, O.; Urban, M.; Bakker, D.

2010-01-01

This paper applies a computerized method related to that of glottochronology and addresses the question whether such a method is useful as a heuristic for identifying deep genealogical relations among languages. We first measure lexical similarities for pairs of language families that are normally

Bullying, Genealogy of the Concept

DEFF Research Database (Denmark)

Søndergaard, Dorte Marie

2017-01-01

Bullying is a serious problem among children in schools and institutions. However, it is only relatively recently that bullying has emerged as a field of research, although the phenomenon itself has likely existed in various forms among children for as long as mankind has walked the earth. The ge....... The genealogy of bullying as a concept has taken the understanding of bullying in different directions with a varying emphasis on either the roles played by individuals (victims and perpetrators) or on social and relational aspects....

Mathematical foundations of the projection-operator method

International Nuclear Information System (INIS)

Moore, S.M.

1979-01-01

Mathematical foundations are determined for the projection-operator method developed by Zwanzig and Mori and used in the study of cooperative phenomena in non-equilibrium processes. It is shown that the Hilbert space of operators can be taken as the Hilbert-Schmidt class. Comments are made on the possibility of a complete formulation of quantum mechanics in terms of this Hilbert space. (author)

The Y chromosome as the most popular marker in genetic genealogy benefits interdisciplinary research.

Science.gov (United States)

Calafell, Francesc; Larmuseau, Maarten H D

2017-05-01

The Y chromosome is currently by far the most popular marker in genetic genealogy that combines genetic data and family history. This popularity is based on its haploid character and its close association with the patrilineage and paternal inherited surname. Other markers have not been found (yet) to overrule this status due to the low sensitivity and precision of autosomal DNA for genetic genealogical applications, given the vagaries of recombination, and the lower capacities of mitochondrial DNA combined with an in general much lower interest in maternal lineages. The current knowledge about the Y chromosome and the availability of markers with divergent mutation rates make it possible to answer questions on relatedness levels which differ in time depth; from the individual and familial level to the surnames, clan and population level. The use of the Y chromosome in genetic genealogy has led to applications in several well-established research disciplines; namely in, e.g., family history, demography, anthropology, forensic sciences, population genetics and sex chromosome evolution. The information obtained from analysing this chromosome is not only interesting for academic scientists but also for the huge and lively community of amateur genealogists and citizen-scientists, fascinated in analysing their own genealogy or surname. This popularity, however, has also some drawbacks, mainly for privacy reasons related to the DNA donor, his close family and far-related namesakes. In this review paper we argue why Y-chromosomal analysis and its genetic genealogical applications will still perform an important role in future interdisciplinary research.

The total Somali clan genealogy : a preliminary sketch

NARCIS (Netherlands)

Abbink, J.

1999-01-01

This paper presents a preliminary genealogy of all Somali 'clans'. Somali kinship is based on patrilineal descent, but there are no equivalents in the Somali language for the words 'clan' and 'lineage'. The Somali terminology for the levels of social segmentation is complex, amongst others because

The QUASAR Project: The "Revolution of the Possible" in Mathematics Instructional Reform in Urban Middle Schools.

Science.gov (United States)

Silver, Edward A.; Stein, Mary Kay

1996-01-01

Examines critical features of the QUASAR Project, a mathematics instruction program oriented toward helping students develop a meaningful understanding of mathematical ideas through challenging mathematical tasks, and discusses findings regarding the positive impact it has had on students. Challenges and obstacles in implementing the project are…

Team research at the biology-mathematics interface: project management perspectives.

Science.gov (United States)

Milton, John G; Radunskaya, Ami E; Lee, Arthur H; de Pillis, Lisette G; Bartlett, Diana F

2010-01-01

The success of interdisciplinary research teams depends largely upon skills related to team performance. We evaluated student and team performance for undergraduate biology and mathematics students who participated in summer research projects conducted in off-campus laboratories. The student teams were composed of a student with a mathematics background and an experimentally oriented biology student. The team mentors typically ranked the students' performance very good to excellent over a range of attributes that included creativity and ability to conduct independent research. However, the research teams experienced problems meeting prespecified deadlines due to poor time and project management skills. Because time and project management skills can be readily taught and moreover typically reflect good research practices, simple modifications should be made to undergraduate curricula so that the promise of initiatives, such as MATH-BIO 2010, can be implemented.

Comparing models on the genealogical relationships among Neandertal, Cro-Magnoid and modern Europeans by serial coalescent simulations.

Science.gov (United States)

Belle, E M S; Benazzo, A; Ghirotto, S; Colonna, V; Barbujani, G

2009-03-01

Populations of anatomically archaic (Neandertal) and early modern (Cro-Magnoid) humans are jointly documented in the European fossil record, in the period between 40 000 and 25 000 years BP, but the large differences between their cultures, morphologies and DNAs suggest that the two groups were not close relatives. However, it is still unclear whether any genealogical continuity between them can be ruled out. Here, we simulated a broad range of demographic scenarios by means of a serial coalescence algorithm in which Neandertals, Cro-Magnoids and modern Europeans were either part of the same mitochondrial genealogy or of two separate genealogies. Mutation rates, population sizes, population structure and demographic growth rates varied across simulations. All models in which anatomically modern (that is, Cro-Magnoid and current) Europeans belong to a distinct genealogy performed better than any model in which the three groups were assigned to the same mitochondrial genealogy. The maximum admissible level of gene flow between Neandertals and the ancestors of current Europeans is 0.001% per generation, one order of magnitude lower than estimated in previous studies not considering genetic data on Cro-Magnoid people.

Multigenerational information: the example of the Icelandic Genealogy Database.

Science.gov (United States)

Tulinius, Hrafn

2011-01-01

The first part of the chapter describes the Icelandic Genealogical Database, how it was created, what it contains, and how it operates. In the second part, an overview of research accomplished with material from the database is given.

On the Use of Client-Driven Projects in the Mathematics Classroom

Science.gov (United States)

Maki, Dan; Winston, Wayne; Shafii-Mousavi, Morteza; Kochanowski, Paul; Lang, Chris; Ernstberger, Kathy; Hodgson, Ted

2006-01-01

In this article, we discuss the use of client-driven projects--projects that are posed by business, government, and non-profit organizations and based upon real problems facing the organization. Although client-driven projects have long been used in business and engineering education, their use in the mathematics classroom is rare. Client-driven…

Projects Using a Computer Algebra System in First-Year Undergraduate Mathematics

Science.gov (United States)

Rosenzweig, Martin

2007-01-01

This paper illustrates the use of computer-based projects in two one-semester first-year undergraduate mathematics classes. Developed over a period of years, the approach is one in which the classes are organised into work-groups, with computer-based projects being undertaken periodically to illustrate the class material. These projects are…

Mathematical programming and financial objectives for scheduling projects

CERN Document Server

Kimms, Alf

2001-01-01

Mathematical Programming and Financial Objectives for Scheduling Projects focuses on decision problems where the performance is measured in terms of money. As the title suggests, special attention is paid to financial objectives and the relationship of financial objectives to project schedules and scheduling. In addition, how schedules relate to other decisions is treated in detail. The book demonstrates that scheduling must be combined with project selection and financing, and that scheduling helps to give an answer to the planning issue of the amount of resources required for a project. The author makes clear the relevance of scheduling to cutting budget costs. The book is divided into six parts. The first part gives a brief introduction to project management. Part two examines scheduling projects in order to maximize their net present value. Part three considers capital rationing. Many decisions on selecting or rejecting a project cannot be made in isolation and multiple projects must be taken fully into a...

Developing corpus-based translation methods between informal and formal mathematics : project description

NARCIS (Netherlands)

Kaliszyk, C.; Urban, J.; Vyskocil, J.; Geuvers, J.H.; Watt, S.M.; Davenport, J.H.; Sexton, A.P.; Sojka, P.; Urban, J.

2014-01-01

The goal of this project is to (i) accumulate annotated informal/formal mathematical corpora suitable for training semi-automated translation between informal and formal mathematics by statistical machine-translation methods, (ii) to develop such methods oriented at the formalization task, and in

The genealogy of personal names: towards a more productive method in historical onomastics.

Science.gov (United States)

Kotilainen, Sofia

2011-01-01

It is essential to combine genealogical and collective biographical approaches with network analysis if one wants to take full advantage of the evidence provided by (hereditary) personal names in historical and linguistic onomastic research. The naming practices of rural families and clans from the 18th to the 20th century can bring us much fresh information about their enduring attitudes and values, as well as about other mentalities of everyday life. Personal names were cultural symbols that contained socially shared meanings. With the help of genealogical method it is possible to obtain a more nuanced understanding of these past naming practices, for example by comparing the conventions of different communities. A long-term and systematic empirical research also enables us to dispute certain earlier assumptions that have been taken for granted in historical onomastics. Therefore, the genealogical method is crucial in studying the criteria for the choices of personal names in the past.

Genealogical databases as a tool for extending follow-up in clinical reviews.

Science.gov (United States)

Ho, Thuy-Van; Chowdhury, Naweed; Kandl, Christopher; Hoover, Cindy; Robinson, Ann; Hoover, Larry

2016-08-01

Long-term follow-up in clinical reviews often presents significant difficulty with conventional medical records alone. Publicly accessible genealogical databases such as Ancestry.com provide another avenue for obtaining extended follow-up and added outcome information. No previous studies have described the use of genealogical databases in the follow-up of individual patients. Ancestry.com, the largest genealogical database in the United States, houses extensive demographic data on an increasing number of Americans. In a recent retrospective review of esthesioneuroblastoma patients treated at our institution, we used this resource to ascertain the outcomes of patients otherwise lost to follow-up. Additional information such as quality of life and supplemental treatments the patient may have received at home was obtained through direct contact with living relatives. The use of Ancestry.com resulted in a 25% increase (20 months) in follow-up duration as well as incorporation of an additional 7 patients in our study (18%) who would otherwise not have had adequate hospital chart data for inclusion. Many patients within this subset had more advanced disease or were remotely located from our institution. As such, exclusion of these outliers can impact the quality of subsequent outcome analysis. Online genealogical databases provide a unique resource of public information that is acceptable to institutional review boards for patient follow-up in clinical reviews. Utilization of Ancestry.com data led to significant improvement in follow-up duration and increased the number of patients with sufficient data that could be included in our retrospective study. © 2016 ARS-AAOA, LLC.

Heroes and Cowards: Genealogy, Subjectivity and War in the Twenty-First Century

Directory of Open Access Journals (Sweden)

Peter Lee

2018-04-01

Full Text Available From the wars of Ancient Greece to the collapsing Islamic State in the present, the same, apparently timeless protagonists appear and their stories told and re-told: the heroes, cowards and other combatants. This article proposes a framework which combines a Foucauldian genealogical approach with his conception of the subject as both constituted in relation to code-oriented moralities, and creatively self-formed in relation to ethics-oriented moralities (Foucault 1992, pp. 5, 25, to understand how it is possible to speak meaningfully of heroes and cowards in the age of the drone and the jihadist. Section one will explore the applicability of Foucauldian genealogy as the methodological basis for understanding present combatants in the context of war. The second section will assess Foucault’s ‘modes of subjectivation’ and ‘practices of the self’ (Foucault 1992, p. 28, as a means of analyzing the emergence of the subject of war over millennia, with emphasis on the ethical dimension of subjectivity that can be applied to heroes and cowards. Then the third section will use insights from Homer and Augustine to begin to illustrate how Foucault’s genealogical approach and his conception of ethical subjectivity combine to enable heroes and cowards to be meaningfully spoken of and better understood in the domain of war today. The purpose of such a study is to set out the basis on which political genealogy after Foucault can provide a nuanced conceptualization of subjectivity in modern war, as those subjects are formed, claimed, valorized and criticized by competing entities in contemporary political discourse.

Second Differences: A Mathematical Bridge between Two Projects

Science.gov (United States)

Fischer, Joyce; Wayment, Stanley; Johnson, Christopher

2010-01-01

Making connections is one of the most important foundations involved in learning mathematics. Two projects are presented in this article: one involving Newton's Second Law of Motion and the other involving the determination of star numbers, a type of figurate number. The two invoke seemingly different modalities for students at different levels of…

Genealogies of Modern Technology

DEFF Research Database (Denmark)

Riis, Søren

2008-01-01

Does modern technology differ from ancient technology and does it have a unique essence? This twofold question opens one of Martin Heidegger's most influential philosophical inquiries, The Question Concerning Technology. The answer Heidegger offers has inspired various critiques and appraisals from...... a vast number of contemporary scholars of technology.1 Heidegger's answer is traditionally thought to suggest a great difference between ancient and modern technology. However, by re-examining Heidegger's text, it is possible to discover previously ignored or misunderstood lines of thoughts that affirm...... a multi-stable interpretation of the origin of modern technology. In what follows, we shall see how The Question Concerning Technology in fact supports three different genealogies of modern technology...

Use of a genealogical database demonstrates heritability of pulmonary fibrosis.

Science.gov (United States)

Scholand, Mary Beth; Coon, Hilary; Wolff, Roger; Cannon-Albright, Lisa

2013-10-01

Pulmonary fibrosis (PF) is a progressive fatal disease of unknown etiology. Identification of risk genes and pathways will enhance our understanding of this disease. Analysis of Utah genealogical resources has shown previously strong evidence for a genetic contribution to other disease, such as cancer. This approach has led to gene discovery in diseases, such as breast cancer and colon cancer and is used here for PF to quantify the heritability. We hypothesize that there is a heritable contribution to death from PF and use existing genealogic and death certificate data to examine patterns of relatedness amongst individuals who have died of PF. We analyzed familial clustering of individuals who died from PF using the Utah Population Database, a unique population-based genealogical resource that has been linked to death certificates dating from 1904. We identified 1,000 individuals with at least three generations of genealogy data and a cause of death documented as PF (cases). We estimated the relative risk (RR) of death from PF among the first-, second-, and third-degree relatives of cases. We also tested the hypothesis of excess relatedness among the cases by comparing the average pairwise relatedness of all cases to the average pair-wise relatedness of 1,000 sets of matched controls. We observed significantly increased risk for death from PF among the first- (RR = 4.69), second- (RR = 1.92), and third-degree relatives (RR = 1.14) of cases. The average relatedness of the 1,000 cases was significantly higher than the expected average relatedness of matched control sets (p < 0.001). When close (first- and second-degree) relationships were ignored, significantly increased relatedness remained (p = 0.002). Our results demonstrate significant clustering among both close and distant relatives, providing strong support for genetic contributions to death from PF. High-risk pedigrees derived from this unique resource may help identify new risk genes and gene

University of Chicago School Mathematics Project 6-12 Curriculum. What Works Clearinghouse Intervention Report

Science.gov (United States)

What Works Clearinghouse, 2011

2011-01-01

The "University of Chicago School Mathematics Project ("UCSMP") 6-12 Curriculum" is a series of yearlong courses--(1) Transition Mathematics; (2) Algebra; (3) Geometry; (4) Advanced Algebra; (5) Functions, Statistics, and Trigonometry; and (6) Precalculus and Discrete Mathematics--emphasizing problem solving, real-world applications, and the use…

Academic Genealogy and Direct Calorimetry: A Personal Account

Science.gov (United States)

Jackson, Donald C.

2011-01-01

Each of us as a scientist has an academic legacy that consists of our mentors and their mentors continuing back for many generations. Here, I describe two genealogies of my own: one through my PhD advisor, H. T. (Ted) Hammel, and the other through my postdoctoral mentor, Knut Schmidt-Nielsen. Each of these pathways includes distingished scientists…

Mathematics authentic assessment on statistics learning: the case for student mini projects

Science.gov (United States)

Fauziah, D.; Mardiyana; Saputro, D. R. S.

2018-03-01

Mathematics authentic assessment is a form of meaningful measurement of student learning outcomes for the sphere of attitude, skill and knowledge in mathematics. The construction of attitude, skill and knowledge achieved through the fulfilment of tasks which involve active and creative role of the students. One type of authentic assessment is student mini projects, started from planning, data collecting, organizing, processing, analysing and presenting the data. The purpose of this research is to learn the process of using authentic assessments on statistics learning which is conducted by teachers and to discuss specifically the use of mini projects to improving students’ learning in the school of Surakarta. This research is an action research, where the data collected through the results of the assessments rubric of student mini projects. The result of data analysis shows that the average score of rubric of student mini projects result is 82 with 96% classical completeness. This study shows that the application of authentic assessment can improve students’ mathematics learning outcomes. Findings showed that teachers and students participate actively during teaching and learning process, both inside and outside of the school. Student mini projects also provide opportunities to interact with other people in the real context while collecting information and giving presentation to the community. Additionally, students are able to exceed more on the process of statistics learning using authentic assessment.

Gaussian process-based Bayesian nonparametric inference of population size trajectories from gene genealogies.

Science.gov (United States)

Palacios, Julia A; Minin, Vladimir N

2013-03-01

Changes in population size influence genetic diversity of the population and, as a result, leave a signature of these changes in individual genomes in the population. We are interested in the inverse problem of reconstructing past population dynamics from genomic data. We start with a standard framework based on the coalescent, a stochastic process that generates genealogies connecting randomly sampled individuals from the population of interest. These genealogies serve as a glue between the population demographic history and genomic sequences. It turns out that only the times of genealogical lineage coalescences contain information about population size dynamics. Viewing these coalescent times as a point process, estimating population size trajectories is equivalent to estimating a conditional intensity of this point process. Therefore, our inverse problem is similar to estimating an inhomogeneous Poisson process intensity function. We demonstrate how recent advances in Gaussian process-based nonparametric inference for Poisson processes can be extended to Bayesian nonparametric estimation of population size dynamics under the coalescent. We compare our Gaussian process (GP) approach to one of the state-of-the-art Gaussian Markov random field (GMRF) methods for estimating population trajectories. Using simulated data, we demonstrate that our method has better accuracy and precision. Next, we analyze two genealogies reconstructed from real sequences of hepatitis C and human Influenza A viruses. In both cases, we recover more believed aspects of the viral demographic histories than the GMRF approach. We also find that our GP method produces more reasonable uncertainty estimates than the GMRF method. Copyright © 2013, The International Biometric Society.

Investigation of a baseline method for genealogical entity resolution

NARCIS (Netherlands)

Efremova, I.; Ranjbar-Sahraei, B.; Oliehoek, F.A.; Calders, T.G.K.; Tuyls, K.P.

2014-01-01

In this paper we study the application of entity resolution (ER) techniques on a real-world multi-source genealogical dataset. Our goal is to identify all persons involved in various notary acts and link them to their birth, marriage and death certificates. In order to evaluate the performance of a

Mathematics Curriculum in Ireland: The Influence of PISA on the Development of Project Maths

Directory of Open Access Journals (Sweden)

Liz KIRWAN

2015-12-01

Full Text Available This article interrogates the extent to which the Organization for Economic Cooperation and Development (OECD through its Programme for International Student Assessment (PISA influenced the development of Project Maths, a new second-level mathematics education policy in Ireland. It argues that the Irish government, in its revision of mathematics education policy, was strongly influenced by PISA and that concern with the country’s ‘average’ placement in the international assessment was instrumental in defining the direction of the revision. It traces the genetic imprint of PISA on the development of curriculum policy, the new mathematics syllabus, its content and assessment. It argues that Project Maths sets out to follow closely the PISA conceptual framework. However, the analysis finds that Project Maths is not a mini-PISA but that the programme is comprised of two distinct approaches, on the one hand retaining the abstract, symbolic mathematics of sections of the pre-existing curriculum, while on the other emphasizing a PISA-like approach to pedagogy and to real-life problem solving.

Temporal differentiation across a West-European Y-chromosomal cline: genealogy as a tool in human population genetics.

Science.gov (United States)

Larmuseau, Maarten H D; Ottoni, Claudio; Raeymaekers, Joost A M; Vanderheyden, Nancy; Larmuseau, Hendrik F M; Decorte, Ronny

2012-04-01

The pattern of population genetic variation and allele frequencies within a species are unstable and are changing over time according to different evolutionary factors. For humans, it is possible to combine detailed patrilineal genealogical records with deep Y-chromosome (Y-chr) genotyping to disentangle signals of historical population genetic structures because of the exponential increase in genetic genealogical data. To test this approach, we studied the temporal pattern of the 'autochthonous' micro-geographical genetic structure in the region of Brabant in Belgium and the Netherlands (Northwest Europe). Genealogical data of 881 individuals from Northwest Europe were collected, from which 634 family trees showed a residence within Brabant for at least one generation. The Y-chr genetic variation of the 634 participants was investigated using 110 Y-SNPs and 38 Y-STRs and linked to particular locations within Brabant on specific time periods based on genealogical records. Significant temporal variation in the Y-chr distribution was detected through a north-south gradient in the frequencies distribution of sub-haplogroup R1b1b2a1 (R-U106), next to an opposite trend for R1b1b2a2g (R-U152). The gradient on R-U106 faded in time and even became totally invisible during the Industrial Revolution in the first half of the nineteenth century. Therefore, genealogical data for at least 200 years are required to study small-scale 'autochthonous' population structure in Western Europe.

A doctoral study of the use of the Internet for genealogy

Directory of Open Access Journals (Sweden)

Kylie J. Veale

2009-11-01

Full Text Available Distintas  investigaciones muestran evidencia de que Internet ha tenido un impacto revolucionario en nuestra sociedad y en nuestra forma de vida cotidiana. Obviamente, ya que Internet influye en los diversos aspectos de la vida cotidiana, los intereses de aficionados en áreas tales como la historia también se han mejorado y han cambiado considerando Internet como una tecnología social. Una afición, la genealogía, se ha elevado por encima de todo para ser uno de los más populares en línea, proporcionando una oportunidad para entender el uso de Internet dentro de un contexto más amplio. Como resultado de ello, el autor ha iniciado un programa de investigación de doctorado con la Universidad Tecnológica de Curtin, Australia, para examinar cómo los genealogistas utilizan Internet, y para investigar las consecuencias del desarrollo de la genealogía como una importante actividad basada en Internet. El propuesto de este artículo, por lo tanto, es presentar las notas de investigación del estudio.____________ABSTRACT:Research evidence shows the Internet has had a revolutionary impact on our society and the way we live everyday. Consequently, as the Internet influences the many aspects of everyday lives, hobbyist interests in areas such as history have also been enhanced and changed by the Internet as a social technology. One hobby, genealogy, has risen above all to be one of the most popular online, providing an opportunity to understand the use of the Internet within a broader context. As a result, the author has commenced a PhD research program with Curtin University of Technology, Australia, to examine how genealogists use the Internet, and to investigate the consequences of the development of genealogy as a significant Internet-based activity. The purposed of this article, therefore, is to present the research notes of the study.

[Clinical genealogical and molecular genetic study of patients with mental retardation].

Science.gov (United States)

Hryshchenko, N V; B'ichkova, A M; Lyvshyts, A B; Kravchenko, S A; Pampukha, V N; Solov'ev, A A; Kucherenko, A M; Tatarskiĭ, P F; Afanas'eva, N A; Dubrovskaia, E V; Patskun, Ie Y; Zymak-Zakutnaia, N O; Nykytchina, T V; Lohysh, S Iu; Lyvshyts, L A

2012-01-01

The results of clinical, genealogical, cytogenetic and molecular genetic studies of 113 patients from 96 families with different forms of mental retardation from Ukraine are presented. This study was held as part of the CHERISH project of the 7-th Framework Program. The aim of the project is to improve diagnostics of mental retardation in children in Eastern Europe and Central Asia through detailed analysis of known chromosomal and gene's aberrations and to find the new gene-candidates that cause mental retardation. All patients have normal chromosome number (46XY or 46XX). The cases with fragile-X syndrome were eliminated using molecular genetic methods. Genome rearrangements were found among 28 patients using cytogenetic analysis, multiplex ligation-dependent probe amplification (MLPA analysis) ofsubtelomeric regions and array-based comparative genomic hybridisation (array CGH screening). In 10 cases known pathogenic CNV's were identified, 11 cases are unknown aberrations; their pathogenicity is being determined. The rest cases are known nonpathogenic gene rearrangements. Obtained results show the strong genetic heterogeneity of hereditary forms of mental retardation. The further studies will allow to identificate genes candidates and certain mutations in these genes that may be associated with this pathology.

Mathematical Practices and Arts Integration in an Activity-Based Projective Geometry Course

Science.gov (United States)

Ernest, Jessica Brooke

It is a general assumption that the mathematical activity of students in school should, at least to some degree, parallel the practices of professional mathematicians (Brown, Collins, Duguid, 1989; Moschkovich, 2013). This assumption is reflected in the Common Core State Standards (CCSSI, 2010) and National Council of Teachers of Mathematics (NCTM, 2000) standards documents. However, the practices included in these standards documents, while developed to reflect the practices of professional mathematicians, may be idealized versions of what mathematicians actually do (Moschkovich, 2013). This might lead us to question then: "What is it that mathematicians do, and what practices are not being represented in the standards documents?" In general, the creative work of mathematicians is absent from the standards and, in turn, from school mathematics curricula, much to the dismay of some mathematicians and researchers (Lockhart, 2009; Rogers, 1999). As a result, creativity is not typically being fostered in mathematics students. As a response to this lack of focus on fostering creativity (in each of the science, technology, engineering, and mathematics disciplines--the STEM disciplines), a movement to integrate the arts emerged. This movement, called the STEAM movement--introducing the letter A into the acronym STEM to signify incorporating the arts--has been gaining momentum, yet limited research has been carried out on the efficacy of integrating the arts into mathematics courses. My experiences as the co-instructor for an activity-based course focused on projective geometry led me to consider the course as a setting for investigating both mathematical practices and arts integration. In this work, I explored the mathematical practices in which students engaged while working to develop an understanding of projective geometry through group activities. Furthermore, I explored the way in which students' learning experiences were enriched through artistic engagement in the

Assessment in the Context of Mathematics Instruction Reform: The Design of Assessment in the QUASAR Project.

Science.gov (United States)

Silver, Edward A.; Lane, Suzanne

Recent reports on mathematics education reform have focused the attention of educational practitioners and policymakers on new goals for mathematics education and new descriptions of mathematical proficiency. QUASAR is a national project (Quantitative Understanding: Amplifying Student Achievement and Reasoning) designed to improve the mathematics…

Mathematics curriculum in Ireland: The ınfluence of PISA on the development of project maths

Directory of Open Access Journals (Sweden)

Liz Kirwan

2015-12-01

Full Text Available This article interrogates the extent to which the Organization for Economic Cooperation and Development (OECD through its Programme for International Student Assessment (PISA influenced the development of Project Maths, a new second-level mathematics education policy in Ireland. It argues that the Irish government, in its revision of mathematics education policy, was strongly influenced by PISA and that concern with the country’s ‘average’ placement in the international assessment was instrumental in defining the direction of the revision. It traces the genetic imprint of PISA on the development of curriculum policy, the new mathematics syllabus, its content and assessment. It argues that Project Maths sets out to follow closely the PISA conceptual framework. However, the analysis finds that Project Maths is not a mini-PISA but that the programme is comprised of two distinct approaches, on the one hand retaining the abstract, symbolic mathematics of sections of the pre-existing curriculum, while on the other emphasizing a PISA-like approach to pedagogy and to real-life problem solving.

Team Research at the Biology-Mathematics Interface: Project Management Perspectives

Science.gov (United States)

Milton, John G.; Radunskaya, Ami E.; Lee, Arthur H.; de Pillis, Lisette G.; Bartlett, Diana F.

2010-01-01

The success of interdisciplinary research teams depends largely upon skills related to team performance. We evaluated student and team performance for undergraduate biology and mathematics students who participated in summer research projects conducted in off-campus laboratories. The student teams were composed of a student with a mathematics…

Local Genealogies in a Linear Mixed Model for Genome-wide Association Mapping in Complex Pedigreed Populations

DEFF Research Database (Denmark)

Sahana, Goutam; Mailund, Thomas; Lund, Mogens Sandø

2011-01-01

be extended to incorporate other effects in a straightforward and rigorous fashion. Here, we present a complementary approach, called ‘GENMIX (genealogy based mixed model)’ which combines advantages from two powerful GWAS methods: genealogy-based haplotype grouping and MMA. Subjects and Methods: We validated......Introduction: The state-of-the-art for dealing with multiple levels of relationship among the samples in genome-wide association studies (GWAS) is unified mixed model analysis (MMA). This approach is very flexible, can be applied to both family-based and population-based samples, and can...

New roles for mathematics in multi-disciplinary,upper secondary school projects

DEFF Research Database (Denmark)

Lindenskov, Lena; Andresen, Mette

2009-01-01

A new concept, compulsory multi-disciplinary courses, was introduced in upper secondary school curriculum as a central part of a recent reform. This paper reports from a case study of such a triple/four-disciplinary project in mathematics, physics, chemistry and ‘general study preparation...

A Genealogy of (post-Soviet Dependency: Disabling Productivity

Directory of Open Access Journals (Sweden)

Cassandra Hartblay

2014-02-01

Full Text Available Nancy Fraser and Linda Gordon's 1994 article “A Genealogy of Dependency: Tracing a Keyword of the US Welfare State” explored the historical emergence of "dependency" as a moral category of post-industrial American state. In this article, I engage their framework to explore the genealogy of dependency in America's post-industrial sister, the post-Soviet Russian Federation. I also add disability as a core element of 'dependency' that was largely absent from Fraser and Gordon's original analysis. Considering cross-cultural translation, I ask how Russian deployments of three words that all relate to a concept of interdependence align with and depart from American notions of dependency, and trace historical configurations of the Soviet welfare state vis-a-vis disability. To do so, I draw on historical and cultural texts, linguistic comparisons, secondary sources, and ethnographic research. Given this analysis, I argue that rather than a Cold War interpretation of the Soviet Union and the US as oppositional superpowers in the 20th century, a liberatory disability studies framework suggests that in the postindustrial era the Soviet Union and the United States emerged as dual regimes of productivity. I suggest that reframing postsocialism as a global condition helps us to shift considerations of disability justice from a critique of capitalism to a critique of productivity.    Keywords: dependency, disability, citizenship, russia, productivity

Intercoalescence time distribution of incomplete gene genealogies in temporally varying populations, and applications in population genetic inference.

Science.gov (United States)

Chen, Hua

2013-03-01

Tracing back to a specific time T in the past, the genealogy of a sample of haplotypes may not have reached their common ancestor and may leave m lineages extant. For such an incomplete genealogy truncated at a specific time T in the past, the distribution and expectation of the intercoalescence times conditional on T are derived in an exact form in this paper for populations of deterministically time-varying sizes, specifically, for populations growing exponentially. The derived intercoalescence time distribution can be integrated to the coalescent-based joint allele frequency spectrum (JAFS) theory, and is useful for population genetic inference from large-scale genomic data, without relying on computationally intensive approaches, such as importance sampling and Markov Chain Monte Carlo (MCMC) methods. The inference of several important parameters relying on this derived conditional distribution is demonstrated: quantifying population growth rate and onset time, and estimating the number of ancestral lineages at a specific ancient time. Simulation studies confirm validity of the derivation and statistical efficiency of the methods using the derived intercoalescence time distribution. Two examples of real data are given to show the inference of the population growth rate of a European sample from the NIEHS Environmental Genome Project, and the number of ancient lineages of 31 mitochondrial genomes from Tibetan populations. © 2013 Blackwell Publishing Ltd/University College London.

University of Chicago School Mathematics Project (UCSMP) Algebra. WWC Intervention Report

Science.gov (United States)

What Works Clearinghouse, 2009

2009-01-01

University of Chicago School Mathematics Project (UCSMP) Algebra is a one-year course covering three primary topics: (1) linear and quadratic expressions, sentences, and functions; (2) exponential expressions and functions; and (3) linear systems. Topics from geometry, probability, and statistics are integrated with the appropriate algebra.…

Exploring the Effects of Project-Based Learning in Secondary Mathematics Education

Science.gov (United States)

Holmes, Vicki-Lynn; Hwang, Yooyeun

2016-01-01

This mixed-method, longitudinal study investigated the benefits of project-based learning (PBL) on secondary-mathematics students' academic skill development and motivated strategies for learning (i.e., cognitive, social, and motivational). The focus of this study was academic skill development (algebra- and geometry-assessment scores) and other…

On the Genealogy of Kitsch and the Critique of Ideology: A Reflection on Method

Directory of Open Access Journals (Sweden)

Andrius Bielskis

2018-02-01

Full Text Available This paper examines similarities and differences between the genealogical approach to social critique and the Marxist critique of ideology. Given the key methodological aspects of Michel Foucault’s genealogy—the fusion of power and discourse and the Nietzschean notion of the aesthetization of life—the paper argues that Hollywood kitsch maybe interpreted as a new dispositif. A key task of the genealogy of kitsch is to analyze the effects of fake Hollywood narratives: how they form and normalize us, what kind of subjectivities they produce, and what type of social relations they create. La La Land, a 2016 American musical, is discussed as a way of illustration. Theorists of the Frankfurt School also advanced their critiques of the popular culture and its forms of kitsch; yet they followed Marx and his conception of ideology. The paper concludes that the differences between genealogy and the critique of ideology are philosophical. Foucault rejected the Marxist conception of history and the notion of ideology as false consciousness. Kitsch, for a genealogist, is formative rather than repressive; it makes people pursue banal dreams. For a Marxist critic, popular culture as a form of ideology dulls our critical capacities and, therefore, leaves the status quo of alienation intact.

[On the philosophical genealogy of Freud].

Science.gov (United States)

Dimitrov, C T

1975-06-01

The origins of psycho-analysis, like those of every other medico-psychological study, have their own particular scientific and specific social, historical and philosophical-theoretical presuppositions. Freud's philosophical genealogy is closely linked to classical german philosophy and subsequent philosophical movements. I. Kant, J.-F. Herbart, A. Schopenhauer, F. Nietzsche, E. v. Hartmann, G. T. Fechner, E. Mach, W. Ostwald, L. Feuerbach and others did not only emphasise the significance of drives and the unconscious in human behaviour, they also described many psychological mechanisms from depth psychology, (for example repression, condensation, substitution, sublimation). Some false theoretical trends in psycho-analysis (biologism, psychologism and simplifying psycho-energetics to simplify) can be explained to some extent by the influences mentioned above.

An Archaeological/Genealogical Historical Analysis of The National Council of Teachers of Mathematics' Standards Documents

Science.gov (United States)

Bullock, Erika Catherine

2013-01-01

Since the mid-20th century in the United States, there have been several reform movements within mathematics education; each movement has been subject to its own unique socio-cultural and -political forces. The National Council of Teachers of Mathematics' (NCTM) Standards documents--"Curriculum and Evaluation Standards for School…

Frozen Landscapes: A Foucauldian Genealogy of the Ideal Ballet Dancer's Body

Science.gov (United States)

Ritenburg, Heather Margaret

2010-01-01

This paper explores the social construction of the "ideal" body of the female ballet dancer in North America. Specifically, the author constructs a Foucauldian genealogy tracing a body shape that came to dominate the principal female dancers of the New York City Ballet, and how this body shape continues to be normalized through…

How does an ICT-competent mathematics teacher benefit from an ICT-integrative project?

DEFF Research Database (Denmark)

Skott, Charlotte Krog; Østergaard, Camilla Hellsten

2016-01-01

. We use a theoretical framework for classroom mathematical practices to conceptualise teachers´ learning from a participatory perspective. On the one hand, the teacher realises a potential for a more dialogical approach to teaching. On the other hand, she appears to maintain her habits in relation......We investigate an ICT-competent mathematics teacher’s potentials for professional development as she participates in a sixth-grade statistics project aimed at developing practices that integrate ICTs. This is a critical case study, partly because the teacher is not challenged by the proposed ICTs...... to ICT-use. These contrary tendencies negatively influence the students’ learning opportunities. We offer explanations for why the teacher seems to sticks with her ICT-habits as well as suggestions for future research- and development projects....

Establishing and Maintaining a Local History Collection [and] Local History/Genealogical Resources.

Science.gov (United States)

North Carolina Libraries, 1988

1988-01-01

Theme article on developing local history collections in public libraries begins with a discussion of collection development, and continues with sections on technical services, the library environment, staffing, programing, and marketing. A bibliography and directories of used and rare book dealers, genealogical publishers, professional…

The genealogical decomposition of a matrix population model with applications to the aggregation of stages.

Science.gov (United States)

Bienvenu, François; Akçay, Erol; Legendre, Stéphane; McCandlish, David M

2017-06-01

Matrix projection models are a central tool in many areas of population biology. In most applications, one starts from the projection matrix to quantify the asymptotic growth rate of the population (the dominant eigenvalue), the stable stage distribution, and the reproductive values (the dominant right and left eigenvectors, respectively). Any primitive projection matrix also has an associated ergodic Markov chain that contains information about the genealogy of the population. In this paper, we show that these facts can be used to specify any matrix population model as a triple consisting of the ergodic Markov matrix, the dominant eigenvalue and one of the corresponding eigenvectors. This decomposition of the projection matrix separates properties associated with lineages from those associated with individuals. It also clarifies the relationships between many quantities commonly used to describe such models, including the relationship between eigenvalue sensitivities and elasticities. We illustrate the utility of such a decomposition by introducing a new method for aggregating classes in a matrix population model to produce a simpler model with a smaller number of classes. Unlike the standard method, our method has the advantage of preserving reproductive values and elasticities. It also has conceptually satisfying properties such as commuting with changes of units. Copyright © 2017 Elsevier Inc. All rights reserved.

Counselling against HIV in Africa: a genealogy of confessional technologies.

Science.gov (United States)

Nguyen, Vinh-Kim

2013-01-01

This paper contextualises counselling within a broader historical formation that links disclosure to healing and deploys confessional technologies to incite disclosure and awareness of the mysterious substance of the self. Foucault's argument that sexuality was the privileged arena for using confessional technologies to 'produce' the truth of the self is particularly relevant in light of the diffusion of counselling practices in Africa in the wake of the HIV epidemic, particularly with their emphasis on inciting appropriate sexual behaviour. Examination of the historical assemblage of counselling practices shows how they articulate what the self is, the nature of truth and a politics of language. This paper focuses on the genealogy of four key assumptions that express this confessional reason. These are that: (1) people can be 'empowered' to have control on their own lives by working on themselves, (2) secrets untold become pathogens, (3) the ability to heal requires that one first overcome personal illness, (4) the experience of sharing secrets is cathartic and healing. The genealogy intertwines four strands: that of the Unconscious as revealed by Freud and his followers, attempts to treat shell-shocked veterans of World War I, group psychotherapy and participatory research after World War II.

Keeping the Genealogical Structure of Paternal Breed Nuclei in Pigs

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Maria Voiculescu

2012-05-01

Full Text Available For a long period of time pigs as farm animals were considered producing a single ware, pork. Not very long ago the pork market became interested in lean meet. Some breeders tried to have it from the old breeds and lave a lent genetic progress. Other breeders decided to follow the hybridization schemes used in poultry to produce broilers. But in strains with high daily gain and gross muscles the sows fertility declined and by then by disjunction selection they have isolated strains of high fertility. Then the final animal for the market was the cross piglet obtained from these two kinds of strains or lines. The third kind of breeders decided to specializing breeds, selected for as much as possible muscle mass as paternal breeds and breeds specialized for high fertility as maternal breeds. The present paper will present the movement taking place in the genealogy of a breed nucleus of 200sows with closed reproduction. The goal of the families’ movement analysis is to find out how to ensure a convenient genealogy structure preventing consanguinity when some families are extinct by selection for daily gain.

Genealogical Trees of Scientific Papers.

Science.gov (United States)

Waumans, Michaël Charles; Bersini, Hugues

2016-01-01

Many results have been obtained when studying scientific papers citations databases in a network perspective. Articles can be ranked according to their current in-degree and their future popularity or citation counts can even be predicted. The dynamical properties of such networks and the observation of the time evolution of their nodes started more recently. This work adopts an evolutionary perspective and proposes an original algorithm for the construction of genealogical trees of scientific papers on the basis of their citation count evolution in time. The fitness of a paper now amounts to its in-degree growing trend and a "dying" paper will suddenly see this trend declining in time. It will give birth and be taken over by some of its most prevalent citing "offspring". Practically, this might be used to trace the successive published milestones of a research field.

STUDI AWAL TENTANG POLEMIK PERAN WANITA PADA DESAIN RUMAH TINGGAL; DENGAN PENDEKATAN GENEALOGI

Directory of Open Access Journals (Sweden)

J. Lukito Kartono

2000-01-01

Full Text Available Realizing that all of their activities cannot be carried out indoors,people consider that dwelling is a must or tradition for them.The dwelling-house is represented in the forms of space visualizing the dwellers' culture.The indoor spaces reflect the social-structure closely related to the role of the members of the family and to their relation with their relatives.Initially,the space arrangement of traditional society clearly showed the role of man and women but then feminism claimed that women's roles has been discriminating and marginal.We need to prove this point of view in details by always observing the cases of house-designs in genealogical way. Abstract in Bahasa Indonesia : Tradisi berhuni merupakan tradisi yang dilakukan oleh manusia karena sadar bahwa tidak semua kegiatannya dapat dilakukan diudara terbuka.Tempat berhuni yang direpresentasikan dalam wujud ruang mencerminkan kebudayaan yang dianut penghuninya. Ruang-ruang di rumah tinggal menampung struktur sosial yang berkaitan dengan peran suami dan saudaranya,istri dan saudaranya serta anak-anak mereka. Pada awalnya,dalam penataan ruang rumah tinggal masyarakat tradisional terlihat secara jelas adanya ruang-ruang yang mengakomodir kegiatan wanita dan lelaki.Tetapi akhir-akhir ini sejalan dengan lahirnya gerakan feminisme,ada gugatan bahwa telah terjadi diskriminasi dan marjinalisasi terhadap peran wanita dalam rumah tinggal.Kebenaran gugatan memang perlu dibahas lebih mendalam dengan meninjau secara genealogi pada kasus-kasus desain rumah tinggal dari masa ke masa. Kata kunci: lelaki-wanita,rumah tinggal dan genealogi.

Math Path: Encouraging Female Students in Mathematics through Project-Based Learning

Science.gov (United States)

Evans, Riley; Friedman, Jane; McGrath, Lynn; Myers, Perla; Ruiz, Amanda

2018-01-01

Although the number of bachelor's degrees in the U.S. awarded to women has gone up, engagement of women in science, technology, engineering, and mathematics (STEM) continues to be low. This paper presents a project-based learning program, informed by education research best practices, designed to provide research experiences to female students…

Development of Nuclear R and D Man-power Genealogy DB and preparation of Guiding Principle in Assets Application for Nuclear R and D Fund

Energy Technology Data Exchange (ETDEWEB)

Lee, Dong Uk; Song, Seung Hyun; Kim, Hak Jun; Chung, Chul Eun

2007-08-15

Information search for nuclear professional man-power, technology genealogy search, project participation history etc. is serviced, and present limits to KAERI additionally, but constructed Site-Based DB that service is embodied as well as subject responsible person's pedigree. Information of professional man-power include origin school, last degree, distinction of sex, age etc. and technology genealogy consist of NuTRM classification, national science technology classification, and technology tree system classified in KAERI. Technology possession present condition for professional man-power of only KAERI is included within DB. Hereafter, professional manpower of the other nuclear energy company should be strengthened on the basis of DB structure that is developed. Technology tree system classified in KAERI also required to be strengthened on the man-power DB that has effectiveness for long-term as that embody by technology tree system which can represent nuclear energy through the verification of the other nuclear energy company. By applying readying guiding principle in assets application for nuclear R and D fund, secure lucency of assets application.

Development of Nuclear R and D Man-power Genealogy DB and preparation of Guiding Principle in Assets Application for Nuclear R and D Fund

International Nuclear Information System (INIS)

Lee, Dong Uk; Song, Seung Hyun; Kim, Hak Jun; Chung, Chul Eun

2007-08-01

Information search for nuclear professional man-power, technology genealogy search, project participation history etc. is serviced, and present limits to KAERI additionally, but constructed Site-Based DB that service is embodied as well as subject responsible person's pedigree. Information of professional man-power include origin school, last degree, distinction of sex, age etc. and technology genealogy consist of NuTRM classification, national science technology classification, and technology tree system classified in KAERI. Technology possession present condition for professional man-power of only KAERI is included within DB. Hereafter, professional manpower of the other nuclear energy company should be strengthened on the basis of DB structure that is developed. Technology tree system classified in KAERI also required to be strengthened on the man-power DB that has effectiveness for long-term as that embody by technology tree system which can represent nuclear energy through the verification of the other nuclear energy company. By applying readying guiding principle in assets application for nuclear R and D fund, secure lucency of assets application

Guidelines for Preservation, Conservation, and Restoration of Local History and Local Genealogical Materials.

Science.gov (United States)

RQ, 1993

1993-01-01

Presents guidelines adopted by the American Library Association (ALA) relating to the preservation, conservation, and restoration of local history and local genealogical materials. Topics addressed include assessing preservation needs; developing a plan; choosing appropriate techniques, including microduplication, photoduplication, electronic…

Reduce, Reuse, Recycle: Resources and Strategies for the Use of Writing Projects in Mathematics

Science.gov (United States)

Latulippe, Joe; Latulippe, Christine

2014-01-01

As an often recommended but under-utilized pedagogical strategy, writing in mathematics has many benefits for students. However, creating and grading worthwhile writing projects can be more time-consuming than utilizing more traditional forms of assessment. This paper provides a concrete example of a writing project prompt, questions, directions,…

Project-Based Social Justice Mathematics: A Case Study of Five 6th Grade Students

Science.gov (United States)

McHugh, Maighread L.

2015-01-01

The purpose of this qualitative multiple case study was to explore how five sixth grade female students navigated the process of project-based learning as they designed and implemented their own project centered on mathematics while using a social justice lens. The theoretical frameworks of Authentic Intellectual Work and Social Justice…

Comparative study of reproductive skew and pair-bond stability using genealogies from 80 small-scale human societies.

Science.gov (United States)

Ellsworth, Ryan M; Shenk, Mary K; Bailey, Drew H; Walker, Robert S

2016-05-01

Genealogies contain information on the prevalence of different sibling types that result from past reproductive behavior. Full sibling sets stem from stable monogamy, paternal half siblings primarily indicate male reproductive skew, and maternal half siblings reflect unstable pair bonds. Full and half sibling types are calculated for a total of 61,181 siblings from published genealogies for 80 small-scale societies, including foragers, horticulturalists, agriculturalists, and pastoralists from around the world. Most siblings are full (61%) followed by paternal half siblings (27%) and maternal half siblings (13%). Paternal half siblings are positively correlated with more polygynous marriages, higher at low latitudes, and slightly higher in nonforagers, Maternal half sibling fractions are slightly higher at low latitudes but do not vary with subsistence. Partible paternity societies in Amazonia have more paternal half siblings indicating higher male reproductive skew. Sibling counts from genealogies provide a convenient method to simultaneously investigate the reproductive skew and pair-bond stability dimensions of human mating systems cross-culturally. Am. J. Hum. Biol. 28:335-342, 2016. © 2015 Wiley Periodicals, Inc. © 2015 Wiley Periodicals, Inc.

The role of genealogy and clinical family histories in documenting possible inheritance patterns for diabetes mellitus in the pre-insulin era: part 2. Genealogic evidence for type 2 diabetes mellitus in Josephine Imperato's paternal and maternal lineages.

Science.gov (United States)

Imperato, Pascal James; Imperato, Gavin H

2009-12-01

Part 2 presents detailed genealogic information on Josephine Imperato's paternal and maternal lineages extending from four to seven generations into the nineteenth and eighteenth centuries. Among these lineages are some where early adult death over successive generations is perhaps indicative of type 2 diabetes mellitus (type 2 DM). These lineages, all in the town of San Prisco in Italy, include both paternal and maternal ones with the following surnames: Casaccia, Casertano, Cipriano, de Angelis, de Paulis, Peccerillo, Foniciello, di Monaco, Vaccarella, Valenziano, Ventriglia, and Zibella. Genealogic studies of eighteenth and nineteenth century vital records in this area of Italy cannot definitively establish type 2 diabetes mellitus as either an immediate or contributory cause of death. This is because causes of death were not recorded and because disease diagnostic capabilities were largely absent. Genealogic studies of those who lived in Italy in the eighteenth and nineteenth centuries can at best provide data on approximate age at time of death. Early adult death in this era was not uncommon. However, its presence over several successive generations in a lineage raises the possibility of inherited diseases prominent among which is type 2 DM.

The Critical Purchase of Genealogy: Critiquing Student Participation Projects

Science.gov (United States)

Anderson, Anna

2015-01-01

Until recently the dominant critique of "student participation" projects was one based on the theoretical assumptions of critical theory in the form of critical pedagogy. Over the last decade, we have witnessed the emergence of a critical education discourse that theorises and critically analyses such projects using Foucault's notion of…

Moduli of mathematical instanton vector bundles with odd c2 on projective space

International Nuclear Information System (INIS)

Tikhomirov, Aleksandr S

2012-01-01

We study the moduli space I n of mathematical instanton vector bundles of rank 2 with second Chern class n≥1 on the projective space P 3 , and prove the irreducibility of I n for arbitrary odd n≥1.

Mitochondrial replacement techniques: egg donation, genealogy and eugenics.

Science.gov (United States)

Palacios-González, César

2016-03-01

Several objections against the morality of researching or employing mitochondrial replacement techniques have been advanced recently. In this paper, I examine three of these objections and show that they are found wanting. First I examine whether mitochondrial replacement techniques, research and clinical practice, should not be carried out because of possible harms to egg donors. Next I assess whether mitochondrial replacement techniques should be banned because they could affect the study of genealogical ancestry. Finally, I examine the claim that mitochondrial replacement techniques are not transferring mitochondrial DNA but nuclear DNA, and that this should be prohibited on ethical grounds.

Paradigma Kepariwisataan Bali Tahun 1930-An: Studi Genealogi Kepariwisataan Budaya

OpenAIRE

I Made Sendra

2016-01-01

This article analyses the connection between Baliseering discourse and the practice of Bali`s cultural tourism by applying the theory of hegemony from Gramsci and genealogy from Micheal Foucault as tools of analysis. It is very interesting topic to analyses especially in relation to the reconstruction of Baliseering discourse, the power knowledge emerged from Baliseering discourse, the articulation of it to open the space of Bali as historical cultural. Research shows that Baliseering is colo...

Genetic diversity of dog breeds: within-breed diversity comparing genealogical and molecular data.

Science.gov (United States)

Leroy, G; Verrier, E; Meriaux, J C; Rognon, X

2009-06-01

The genetic diversity of 61 dog breeds raised in France was investigated. Genealogical analyses were performed on the pedigree file of the French kennel club. A total of 1514 dogs were also genotyped using 21 microsatellite markers. For animals born from 2001 to 2005, the average coefficient of inbreeding ranged from 0.2% to 8.8% and the effective number of ancestors ranged from 9 to 209, according to the breed. The mean value of heterozygosity was 0.62 over all breeds (range 0.37-0.77). At the breed level, few correlations were found between genealogical and molecular parameters. Kinship coefficients and individual similarity estimators were, however, significantly correlated, with the best mean correlation being found for the Lynch & Ritland estimator (r = 0.43). According to both approaches, it was concluded that special efforts should be made to maintain diversity for three breeds, namely the Berger des Pyrénées, Braque Saint-Germain and Bull Terrier.

[Archaeology and genealogy as methodological options of nursing research].

Science.gov (United States)

Azevedo, Rosemeiry Capriata de Souza; Ramos, Flavia Regina Souza

2003-01-01

This article is based on the historical contextualization about the development of research in nursing, presents the categories/lines of interest that support the human knowledge applied in the Doctorate Thesis in Nursing in Brazil, points out the archeological and genealogical methods proposed by Michel Foucault, and their possibility to make more difficult the day-to-day tasks of the nursing profession Whether in Institutions, Public Policies, Health Reform, and Vocational Training, in the attempt to understand which strategies, challenges, knowledge base, and practices have influenced the building of the subjects.

Genealogy and gene trees.

Science.gov (United States)

Rasmuson, Marianne

2008-02-01

Heredity can be followed in persons or in genes. Persons can be identified only a few generations back, but simplified models indicate that universal ancestors to all now living persons have occurred in the past. Genetic variability can be characterized as variants of DNA sequences. Data are available only from living persons, but from the pattern of variation gene trees can be inferred by means of coalescence models. The merging of lines backwards in time leads to a MRCA (most recent common ancestor). The time and place of living for this inferred person can give insights in human evolutionary history. Demographic processes are incorporated in the model, but since culture and customs are known to influence demography the models used ought to be tested against available genealogy. The Icelandic data base offers a possibility to do so and points to some discrepancies. Mitochondrial DNA and Y chromosome patterns give a rather consistent view of human evolutionary history during the latest 100 000 years but the earlier epochs of human evolution demand gene trees with longer branches. The results of such studies reveal as yet unsolved problems about the sources of our genome.

[The importance of genealogy applied to genetic research in Costa Rica].

Science.gov (United States)

Meléndez Obando, Mauricio O

2004-09-01

The extensive development of genealogical studies based on archival documents has provided powerful support for genetic research in Costa Rica over the past quarter century. As a result, several questions of population history have been answered, such as those involving hereditary illnesses, suggesting additional avenues and questions as well. Similarly, the preservation of massive amounts of historical documentation highlights the major advantages that the Costa Rican population offers to genetic research.

Genealogy, morphology and fitness of spontaneous hybrids between wild and cultivated chicory (Cichorium intybus)

DEFF Research Database (Denmark)

Kiær, Lars Pødenphant; Philipp, M.; Bagger Jørgensen, Rikke

2007-01-01

Crop species are known to hybridize spontaneously with wild relatives, but few studies have characterized the performance of hybrids at various genealogies, life stages and environments. A group of cultivar-like individuals and potential hybrids were observed in a roadside population of wild chic...

Genealogy profiling through strain improvement by using metabolic network analysis: metabolic flux genealogy of several generations of lysine-producing corynebacteria.

Science.gov (United States)

Wittmann, Christoph; Heinzle, Elmar

2002-12-01

A comprehensive approach of metabolite balancing, (13)C tracer studies, gas chromatography-mass spectrometry, matrix-assisted laser desorption ionization-time of flight mass spectrometry, and isotopomer modeling was applied for comparative metabolic network analysis of a genealogy of five successive generations of lysine-producing Corynebacterium glutamicum. The five strains examined (C. glutamicum ATCC 13032, 13287, 21253, 21526, and 21543) were previously obtained by random mutagenesis and selection. Throughout the genealogy, the lysine yield in batch cultures increased markedly from 1.2 to 24.9% relative to the glucose uptake flux. Strain optimization was accompanied by significant changes in intracellular flux distributions. The relative pentose phosphate pathway (PPP) flux successively increased, clearly corresponding to the product yield. Moreover, the anaplerotic net flux increased almost twofold as a consequence of concerted regulation of C(3) carboxylation and C(4) decarboxylation fluxes to cover the increased demand for lysine formation; thus, the overall increase was a consequence of concerted regulation of C(3) carboxylation and C(4) decarboxylation fluxes. The relative flux through isocitrate dehydrogenase dropped from 82.7% in the wild type to 59.9% in the lysine-producing mutants. In contrast to the NADPH demand, which increased from 109 to 172% due to the increasing lysine yield, the overall NADPH supply remained constant between 185 and 196%, resulting in a decrease in the apparent NADPH excess through strain optimization. Extrapolated to industrial lysine producers, the NADPH supply might become a limiting factor. The relative contributions of PPP and the tricarboxylic acid cycle to NADPH generation changed markedly, indicating that C. glutamicum is able to maintain a constant supply of NADPH under completely different flux conditions. Statistical analysis by a Monte Carlo approach revealed high precision for the estimated fluxes, underlining the

Haim Yacobi, Israel and Africa: A Genealogy of Moral Geography

OpenAIRE

Levin, Ayala

2017-01-01

Haim Yacobi’s Israel and Africa: A Genealogy of Moral Geography boldly outlines the significant role the African continent has played in Israel’s political and cultural self-fashioning. Like its Middle Eastern setting, Africa’s geographic proximity and the web of ties this proximity entails are denied in the Israeli society, all the while the continent is produced as Israel’s “other.” Through its relationships with Africa, the author argues, Israel constitutes itself as Western, modern, enlig...

A Multigene Approach for Comparing Genealogy of Betacoronavirus from Cattle and Horses

Directory of Open Access Journals (Sweden)

Iracema N. Barros

2013-01-01

Full Text Available Gastroenteritis is one of the leading causes of morbidity and mortality among young and newborn animals and is often caused by multiple intestinal infections, with rotavirus and bovine coronavirus (BCoV being the main viral causes in cattle. Given that BCoV is better studied than equine coronaviruses and given the possibility of interspecies transmission of these viruses, this research was designed to compare the partial sequences of the spike glycoprotein (S, hemagglutinin-esterase protein (HE, and nucleoprotein (N genes from coronaviruses from adult cattle with winter dysentery, calves with neonatal diarrhea, and horses. To achieve this, eleven fecal samples from dairy cows with winter dysentery, three from calves, and two from horses, all from Brazil, were analysed. It could be concluded that the enteric BCoV genealogy from newborn and adult cattle is directly associated with geographic distribution patterns, when S and HE genes are taken into account. A less-resolved genealogy exists for the HE and N genes in cattle, with a trend for an age-related segregation pattern. The coronavirus strains from horses revealed Betacoronavirus sequences indistinguishable from those found in cattle, a fact previously unknown.

On the genealogy of branching random walks and of directed polymers

Science.gov (United States)

Derrida, Bernard; Mottishaw, Peter

2016-08-01

It is well known that the mean-field theory of directed polymers in a random medium exhibits replica symmetry breaking with a distribution of overlaps which consists of two delta functions. Here we show that the leading finite-size correction to this distribution of overlaps has a universal character which can be computed explicitly. Our results can also be interpreted as genealogical properties of branching Brownian motion or of branching random walks.

Estimating mutation parameters, population history and genealogy simultaneously from temporally spaced sequence data.

Science.gov (United States)

Drummond, Alexei J; Nicholls, Geoff K; Rodrigo, Allen G; Solomon, Wiremu

2002-07-01

Molecular sequences obtained at different sampling times from populations of rapidly evolving pathogens and from ancient subfossil and fossil sources are increasingly available with modern sequencing technology. Here, we present a Bayesian statistical inference approach to the joint estimation of mutation rate and population size that incorporates the uncertainty in the genealogy of such temporally spaced sequences by using Markov chain Monte Carlo (MCMC) integration. The Kingman coalescent model is used to describe the time structure of the ancestral tree. We recover information about the unknown true ancestral coalescent tree, population size, and the overall mutation rate from temporally spaced data, that is, from nucleotide sequences gathered at different times, from different individuals, in an evolving haploid population. We briefly discuss the methodological implications and show what can be inferred, in various practically relevant states of prior knowledge. We develop extensions for exponentially growing population size and joint estimation of substitution model parameters. We illustrate some of the important features of this approach on a genealogy of HIV-1 envelope (env) partial sequences.

Erving Goffman: vida y genealogía intelectual

Directory of Open Access Journals (Sweden)

Urteaga, Eguzki

2010-06-01

Full Text Available What does happen when two or more persons are in a face to face situation? How the interaction develops when one of them commits an infamy, presents a physical disability or if he is considered as a mental patient? Erving Goffman (1922-1982, of Canadian origin, has tried to answer to this type of questions along his research life. It result an abundant, exciting but also controversial work because if some analysts see in Goffman the principal sociologist of the second half of the 20th century, others think that his analyses only constitute the reflection of a «petit bourgeois» point of view on the urban American society. This article presents both the life and the intellectual genealogy of this sociologist.

¿Qué sucede cuando dos o más personas se encuentran en una situación de cara a cara? ¿Cómo se desarrolla la interacción cuando una de ellas comete una torpeza o presenta una discapacidad física o si está considerada como una enferma mental? Erving Goffman (1922-1982, de origen canadiense, ha intentado contestar a ese tipo de preguntas a lo largo de su vida investigadora. Resulta de todo ello una obra abundante, apasionante pero también controvertida, puesto que algunos analistas ven en Goffman el mayor sociólogo de la segunda mitad del siglo XX mientras que otros consideran que sus análisis solo constituyen el reflejo de un punto de vista «pequeño-burgués» sobre la sociedad urbana americana. Este artículo presenta tanto la vida como la genealogía intelectual de ese sociólogo.

The Effects of Project-Based Learning Activities on Academic Achievement and Motivation in Mathematics in Eighth-Grade Students

Science.gov (United States)

Mudrich, Rachel Marie

2017-01-01

The purpose of this research study was to determine if project-based learning activities (PBLA) incorporated into an eighth-grade mathematics classroom have an effect on students' academic achievement and motivation toward learning. The control group used the traditional instruction method to cover mathematic objective skills that are Common Core…

An academic genealogy on the history of American field primatologists.

Science.gov (United States)

Kelley, Elizabeth A; Sussman, Robert W

2007-03-01

In this paper, we present the academic genealogy of American field primatologists. The genealogy has been compiled to formally document the historical record of this young field. Data have been collected from three main sources: 1) e-mail surveys, 2) library and Internet research, and 3) verbal communication through forums such as American Association of Physical Anthropology meetings. Lineages of primatologists have been graphically displayed using Microsoft Visio. As of September 2005, 672 names and 239 affiliated universities, organizations and institutions have been recorded in 19 lineages. Five hundred and thirty-eight of the 672 names, 80.1%, are field primatologists. The Hooton/Washburn lineage is the largest; 60.6% of the recorded field primatologists are linked to this lineage. In addition, four of the five professors who have mentored a comparable number of field primatologists at American universities since Washburn are linked to the Hooton/Washburn lineage; and the school where Washburn mentored a majority of his students, UC-Berkeley, continues to have the highest overall graduation record for this subdiscipline. However, the field of primatology has been diversifying since the 1960s, and different universities are now responsible for graduating a substantial number of primatologists. We conclude that while the Hooton/Washburn lineage has remained remarkably homogenous in its anthropological focus, the field is also becoming increasingly enriched by primatologists who have had training in fields such as zoology, psychology, and ecology both in the United States and abroad. (c) 2006 Wiley-Liss, Inc.

The Promise of the New: Genealogies of Youth, Nation and Educational Reform in Australia

Science.gov (United States)

McLeod, Julie; Wright, Katie

2012-01-01

The promise of the new underpins much educational reform discourse, from utopian strands and grand gestures to more formulaic rhetoric found in declarations of new policies for new times. Informed by genealogical and feminist approaches, this essay introduces some conceptual frameworks for analysing such expressions of hopefulness and newness in…

Post secondary project-based learning in science, technology, engineering and mathematics

OpenAIRE

Ralph, Rachel A.

2016-01-01

Project-based learning (PjBL - to distinguish from problem-based learning - PBL) has become a recurrent practice in K-12 classroom environments. As PjBL has become prominent in K-12 classrooms, it has also surfaced in post-secondary institutions.  The purpose of this paper is to examine the research that has studied a variety of science, technology, engineering and mathematic subjects using PjBL in post-secondary classrooms. Eleven articles (including qualitative, quantitative and mixed metho...

Integrated learning of mathematics, science and technology concepts through LEGO/Logo projects

Science.gov (United States)

Wu, Lina

This dissertation examined integrated learning in the domains of mathematics, science and technology based on Piaget's constructivism, Papert's constructionism, and project-based approach to education. Ten fifth grade students were involved in a two-month long after school program where they designed and built their own computer-controlled LEGO/Logo projects that required the use of gears, ratios and motion concepts. The design of this study centered on three notions of integrated learning: (1) integration in terms of what educational materials/settings provide, (2) integration in terms of students' use of those materials, and (3) integration in the psychological sense. In terms of the first notion, the results generally showed that the LEGO/Logo environment supported the integrated learning of math, science and technology concepts. Regarding the second notion, the students all completed impressive projects of their own design. They successfully combined gears, motors, and LEGO parts together to create motion and writing control commands to manipulate the motion. But contrary to my initial expectations, their successful designs did not require numerical reasoning about ratios in designing effective gear systems. When they did reason about gear relationships, they worked with "qualitative" ratios, e.g., "a larger driver gear with a smaller driven gear increases the speed." In terms of the third notion of integrated learning, there was evidence in all four case study students of the psychological processes involved in linking mathematical, scientific, and/or technological concepts together to achieve new conceptual units. The students not only made connections between ideas and experiences, but also recognized decisive patterns and relationships in their project work. The students with stronger overall project performances showed more evidence of synthesis than the students with relatively weaker performances did. The findings support the conclusion that all three

Mathematical Models of Elementary Mathematics Learning and Performance. Final Report.

Science.gov (United States)

Suppes, Patrick

This project was concerned with the development of mathematical models of elementary mathematics learning and performance. Probabilistic finite automata and register machines with a finite number of registers were developed as models and extensively tested with data arising from the elementary-mathematics strand curriculum developed by the…

Does having children extend life span? A genealogical study of parity and longevity in the Amish.

Science.gov (United States)

McArdle, Patrick F; Pollin, Toni I; O'Connell, Jeffrey R; Sorkin, John D; Agarwala, Richa; Schäffer, Alejandro A; Streeten, Elizabeth A; King, Terri M; Shuldiner, Alan R; Mitchell, Braxton D

2006-02-01

The relationship between parity and life span is uncertain, with evidence of both positive and negative relationships being reported previously. We evaluated this issue by using genealogical data from an Old Order Amish community in Lancaster, Pennsylvania, a population characterized by large nuclear families, homogeneous lifestyle, and extensive genealogical records. The analysis was restricted to the set of 2,015 individuals who had children, were born between 1749 and 1912, and survived until at least age 50 years. Pedigree structures and birth and death dates were extracted from Amish genealogies, and the relationship between parity and longevity was examined using a variance component framework. Life span of fathers increased in linear fashion with increasing number of children (0.23 years per additional child; p =.01), while life span of mothers increased linearly up to 14 children (0.32 years per additional child; p =.004) but decreased with each additional child beyond 14 (p =.0004). Among women, but not men, a later age at last birth was associated with longer life span (p =.001). Adjusting for age at last birth obliterated the correlation between maternal life span and number of children, except among mothers with ultrahigh (>14 children) parity. We conclude that high parity among men and later menopause among women may be markers for increased life span. Understanding the biological and/or social factors mediating these relationships may provide insights into mechanisms underlying successful aging.

Statistical Content in Middle Grades Mathematics Textbooks

Science.gov (United States)

Pickle, Maria Consuelo Capiral

2012-01-01

This study analyzed the treatment and scope of statistical concepts in four, widely-used, contemporary, middle grades mathematics textbook series: "Glencoe Math Connects," "Prentice Hall Mathematics," "Connected Mathematics Project," and "University of Chicago School Mathematics Project." There were three…

Game Development as Students’ Engagement Project in High School Mathematics

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Ryan V. Dio

2015-12-01

Full Text Available The general expectancies of the enhanced basic education curriculum in the Philippines focuses on the performance standards which can be expressed when students are able to produce products as evidence that they can transfer or use their learning in real-life situations. One way to assess students achievement is through an engaging activities that would require them apply the knowledge and skills acquired in the subject as the outcome of their learning. This descriptive method of research employed content analysis procedures and survey in describing and assessing the significant feature of the mathematical games as potential learning devices developed by the high school students through an engaging task assignment. It utilized purposive sampling techniques in the selection of the respondents and the submitted write-ups of mathematical games for analysis as typical sample in this study. The study revealed that the high school students developed mathematical board games with different objectives and mechanics as inspired by their learning, experiences, hobbies, and interest. Mathematical concepts and processes along numbers and number sense, measurements, algebra, geometry, and probability and statistics were integrated in the game through question card and mechanics of the game itself. The groups of students and teachers have high level of agreement as to the workmanship and usability, mechanics and organization, relevance to instruction/learning, and fun and enjoyment of the game as revealed by their assessment from very satisfactory to excellent level. Results implied that teachers in any subject area may use students’ engagement project as teaching strategy to produce products and performance that would provide evidence of students’ learning. The school curriculum makers may consider the students’ output as subjects of research for further improvements, exhibits, and classroom utilization.

Discrete Mathematics

DEFF Research Database (Denmark)

Sørensen, John Aasted

2010-01-01

The introduction of the mathematics needed for analysis, design and verification of discrete systems, including applications within programming languages for computer systems. Course sessions and project work. Semester: Spring 2010 Ectent: 5 ects Class size: 18......The introduction of the mathematics needed for analysis, design and verification of discrete systems, including applications within programming languages for computer systems. Course sessions and project work. Semester: Spring 2010 Ectent: 5 ects Class size: 18...

Discrete Mathematics

DEFF Research Database (Denmark)

Sørensen, John Aasted

2010-01-01

The introduction of the mathematics needed for analysis, design and verification of discrete systems, including applications within programming languages for computer systems. Course sessions and project work. Semester: Autumn 2010 Ectent: 5 ects Class size: 15......The introduction of the mathematics needed for analysis, design and verification of discrete systems, including applications within programming languages for computer systems. Course sessions and project work. Semester: Autumn 2010 Ectent: 5 ects Class size: 15...

The genealogy of sequences containing multiple sites subject to strong selection in a subdivided population.

Science.gov (United States)

Nordborg, Magnus; Innan, Hideki

2003-03-01

A stochastic model for the genealogy of a sample of recombining sequences containing one or more sites subject to selection in a subdivided population is described. Selection is incorporated by dividing the population into allelic classes and then conditioning on the past sizes of these classes. The past allele frequencies at the selected sites are thus treated as parameters rather than as random variables. The purpose of the model is not to investigate the dynamics of selection, but to investigate effects of linkage to the selected sites on the genealogy of the surrounding chromosomal region. This approach is useful for modeling strong selection, when it is natural to parameterize the past allele frequencies at the selected sites. Several models of strong balancing selection are used as examples, and the effects on the pattern of neutral polymorphism in the chromosomal region are discussed. We focus in particular on the statistical power to detect balancing selection when it is present.

Mathematics Curriculum in Ireland: The Influence of PISA on the Development of Project Maths

Science.gov (United States)

Kirwan, Liz

2015-01-01

This article interrogates the extent to which the Organization for Economic Cooperation and Development (OECD) through its Programme for International Student Assessment (PISA) influenced the development of Project Maths, a new second-level mathematics education policy in Ireland. It argues that the Irish government, in its revision of mathematics…

Genealogías y molecular de los descendientes del Marquéz de Yavi

Directory of Open Access Journals (Sweden)

Alfaro Gómez, Emma Laura

2007-01-01

Full Text Available El título nobiliario de Marqués del Valle del Toxo, conocido comúnmente como Marqués de Yavi, era el más importante en el territorio del virreinato del Río de la Plata y se extendía por toda la Puna argentina y diversos municipios de Bolivia. Hubo cuatro marqueses desde su creación en 1708 por la Real Cédula emitida por Felipe V, rey de España, hasta su disolución en 1820 luego del fallecimiento del cuarto marqués Juan José Feliciano Fernández Campero. La abundancia de referencias históricas sobre el Marquesado de Yavi, el reciente interés político por recuperar la figura histórica del último Marqués sumado al encuentro social de sus descendientes ofreció la extraordinaria posibilidad de realizar una reconstrucción detallada de la genealogía de la familia Campero y relacionarla con el estudio molecular de sus descendientes. Se analizaron muestras de 30 individuos Campero a través de 6 microsatélites del cromosoma Y (DYS:19, 389a y b, 390,392,393 Se encontraron 8 linajes paternos bien definidos, 16 muestras comparten un linaje único, el segundo linaje congrega a 5 individuos, el tercero y cuarto linaje cuentan con 2 individuos cada uno y en 5 muestras se encontraron linajes individuales no relacionados con los anteriores. De estos resultados se interpreta que en la Genealogía Campero coexisten linajes diferentes, de los cuales uno de ellos, el mayoritario, probablemente sea el linaje fundador de esta genealogía. Se discuten estos resultados a la luz de la información genealógica e histórica.

Mathematical Biology Modules Based on Modern Molecular Biology and Modern Discrete Mathematics

Science.gov (United States)

Davies, Robin; Hodge, Terrell; Enyedi, Alexander

2010-01-01

We describe an ongoing collaborative curriculum materials development project between Sweet Briar College and Western Michigan University, with support from the National Science Foundation. We present a collection of modules under development that can be used in existing mathematics and biology courses, and we address a critical national need to introduce students to mathematical methods beyond the interface of biology with calculus. Based on ongoing research, and designed to use the project-based-learning approach, the modules highlight applications of modern discrete mathematics and algebraic statistics to pressing problems in molecular biology. For the majority of projects, calculus is not a required prerequisite and, due to the modest amount of mathematical background needed for some of the modules, the materials can be used for an early introduction to mathematical modeling. At the same time, most modules are connected with topics in linear and abstract algebra, algebraic geometry, and probability, and they can be used as meaningful applied introductions into the relevant advanced-level mathematics courses. Open-source software is used to facilitate the relevant computations. As a detailed example, we outline a module that focuses on Boolean models of the lac operon network. PMID:20810955

Mathematical biology modules based on modern molecular biology and modern discrete mathematics.

Science.gov (United States)

Robeva, Raina; Davies, Robin; Hodge, Terrell; Enyedi, Alexander

2010-01-01

We describe an ongoing collaborative curriculum materials development project between Sweet Briar College and Western Michigan University, with support from the National Science Foundation. We present a collection of modules under development that can be used in existing mathematics and biology courses, and we address a critical national need to introduce students to mathematical methods beyond the interface of biology with calculus. Based on ongoing research, and designed to use the project-based-learning approach, the modules highlight applications of modern discrete mathematics and algebraic statistics to pressing problems in molecular biology. For the majority of projects, calculus is not a required prerequisite and, due to the modest amount of mathematical background needed for some of the modules, the materials can be used for an early introduction to mathematical modeling. At the same time, most modules are connected with topics in linear and abstract algebra, algebraic geometry, and probability, and they can be used as meaningful applied introductions into the relevant advanced-level mathematics courses. Open-source software is used to facilitate the relevant computations. As a detailed example, we outline a module that focuses on Boolean models of the lac operon network.

Evolutionary analyses of non-genealogical bonds produced by introgressive descent.

Science.gov (United States)

Bapteste, Eric; Lopez, Philippe; Bouchard, Frédéric; Baquero, Fernando; McInerney, James O; Burian, Richard M

2012-11-06

All evolutionary biologists are familiar with evolutionary units that evolve by vertical descent in a tree-like fashion in single lineages. However, many other kinds of processes contribute to evolutionary diversity. In vertical descent, the genetic material of a particular evolutionary unit is propagated by replication inside its own lineage. In what we call introgressive descent, the genetic material of a particular evolutionary unit propagates into different host structures and is replicated within these host structures. Thus, introgressive descent generates a variety of evolutionary units and leaves recognizable patterns in resemblance networks. We characterize six kinds of evolutionary units, of which five involve mosaic lineages generated by introgressive descent. To facilitate detection of these units in resemblance networks, we introduce terminology based on two notions, P3s (subgraphs of three nodes: A, B, and C) and mosaic P3s, and suggest an apparatus for systematic detection of introgressive descent. Mosaic P3s correspond to a distinct type of evolutionary bond that is orthogonal to the bonds of kinship and genealogy usually examined by evolutionary biologists. We argue that recognition of these evolutionary bonds stimulates radical rethinking of key questions in evolutionary biology (e.g., the relations among evolutionary players in very early phases of evolutionary history, the origin and emergence of novelties, and the production of new lineages). This line of research will expand the study of biological complexity beyond the usual genealogical bonds, revealing additional sources of biodiversity. It provides an important step to a more realistic pluralist treatment of evolutionary complexity.

Determining Y-STR mutation rates in deep-routing genealogies: Identification of haplogroup differences.

Science.gov (United States)

Claerhout, Sofie; Vandenbosch, Michiel; Nivelle, Kelly; Gruyters, Leen; Peeters, Anke; Larmuseau, Maarten H D; Decorte, Ronny

2018-05-01

Knowledge of Y-chromosomal short tandem repeat (Y-STR) mutation rates is essential to determine the most recent common ancestor (MRCA) in familial searching or genealogy research. Up to now, locus-specific mutation rates have been extensively examined especially for commercially available forensic Y-STRs, while haplogroup specific mutation rates have not yet been investigated in detail. Through 450 patrilineally related namesakes distributed over 212 deep-rooting genealogies, the individual mutation rates of 42 Y-STR loci were determined, including 27 forensic Y-STR loci from the Yfiler ® Plus kit and 15 additional Y-STR loci (DYS388, DYS426, DYS442, DYS447, DYS454, DYS455, DYS459a/b, DYS549, DYS607, DYS643, DYS724a/b and YCAIIa/b). At least 726 mutations were observed over 148,596 meiosis and individual Y-STR mutation rates varied from 2.83 × 10 -4 to 1.86 × 10 -2 . The mutation rate was significantly correlated with the average allele size, the complexity of the repeat motif sequence and the age of the father. Significant differences in average Y-STR mutations rates were observed when haplogroup 'I & J' (4.03 × 10 -3 mutations/generation) was compared to 'R1b' (5.35 × 10 -3 mutations/generation) and to the overall mutation rate (5.03 × 10 -3 mutations/generation). A difference in allele size distribution was identified as the only cause for these haplogroup specific mutation rates. The haplogroup specific mutation rates were also present within the commercially available Y-STR kits (Yfiler ® , PowerPlex ® Y23 System and Yfiler ® Plus). This observation has consequences for applications where an average Y-STR mutation rate is used, e.g. tMRCA estimations in familial searching and genealogy research. Copyright © 2018 Elsevier B.V. All rights reserved.

Can Instructional Reform in Urban Middle Schools Help Students Narrow the Mathematics Performance Gap? Some Evidence from the QUASAR Project.

Science.gov (United States)

Silver, Edward A.; Lane, Suzanne

1995-01-01

Compared mathematical performance of middle school students in low-income communities involved in the QUASAR project to those of a demographically similar school and of a nationally representative sample. QUASAR mathematics instruction emphasizes reasoning, problem-solving, and understanding. Quasar students outperformed NAEP's disadvantaged urban…

A Genealogy of the "Future": Antipodean Trajectories and Travels of the "21st Century Learner"

Science.gov (United States)

Williams, Carolyn; Gannon, Susanne; Sawyer, Wayne

2013-01-01

In this paper, from the particular positioning of educational researchers working in Australia, we unpack the figure of the "21st century learner" from both broad and specific perspectives. The paper begins with a policy genealogy that traces this figure through networks of documents, events and bodies that transcend borders and…

From Policies to Implementation of Open Distance Learning in Rwanda: A Genealogical and Governmentality Analysis

Science.gov (United States)

Mukama, Evode

2018-01-01

The purpose of this paper is to analyse the interplay between policy formulation and implementation in terms of the historical practices of open distance learning (ODL) in Rwanda. This paper draws on the Foucauldian genealogical and governmentality analysis. The paper examines government aspirations as depicted in policy statements starting from…

Discrete Mathematics

DEFF Research Database (Denmark)

Sørensen, John Aasted

2011-01-01

The objectives of Discrete Mathematics (IDISM2) are: The introduction of the mathematics needed for analysis, design and verification of discrete systems, including the application within programming languages for computer systems. Having passed the IDISM2 course, the student will be able...... to accomplish the following: -Understand and apply formal representations in discrete mathematics. -Understand and apply formal representations in problems within discrete mathematics. -Understand methods for solving problems in discrete mathematics. -Apply methods for solving problems in discrete mathematics......; construct a finite state machine for a given application. Apply these concepts to new problems. The teaching in Discrete Mathematics is a combination of sessions with lectures and students solving problems, either manually or by using Matlab. Furthermore a selection of projects must be solved and handed...

Genealogy construction in a historically isolated population: application to genetic studies of rheumatoid arthritis in the Pima Indian.

Science.gov (United States)

Lin, J P; Hirsch, R; Jacobsson, L T; Scott, W W; Ma, L D; Pillemer, S R; Knowler, W C; Kastner, D L; Bale, S J

1999-01-01

Due to the characteristics of complex traits, many traits may not be amenable to traditional epidemiologic methods. We illustrate an approach that defines an isolated population as the "unit" for carrying out studies of complex disease. We provide an example using the Pima Indians, a relatively isolated population, in which the incidence and prevalence of Type 2 diabetes, gallbladder disease, and rheumatoid arthritis (RA) are significantly increased compared with the general U.S. population. A previous study of RA in the Pima utilizing traditional methods failed to detect a genetic effect on the occurrence of the disease. Our approach involved constructing a genealogy for this population and using a genealogic index to investigate familial aggregation. We developed an algorithm to identify biological relationships among 88 RA cases versus 4,000 subsamples of age-matched individuals from the same population. Kinship coefficients were calculated for all possible pairs of RA cases, and similarly for the subsamples. The sum of the kinship coefficient among all combination of RA pairs, 5.92, was significantly higher than the average of the 4,000 subsamples, 1.99 (p genealogy can be anticipated to provide valuable information for the genetic study of diseases other than RA. Defining an isolated population as the "unit" in which to assess familial aggregation may be advantageous, especially if there are a limited number of cases in the study population.

Genealogical evidence for epidemics of selfish genes.

Science.gov (United States)

Ingvarsson, Par K; Taylor, Douglas R

2002-08-20

Some genetic elements spread infectiously in populations by increasing their rate of genetic transmission at the expense of other genes in the genome. These so-called selfish genetic elements comprise a substantial portion of eukaryotic genomes and have long been viewed as a potent evolutionary force. Despite this view, little is known about the evolutionary history of selfish genetic elements in natural populations, or their genetic effects on other portions of the genome. Here we use nuclear and chloroplast gene genealogies in two species of Silene to show the historical pattern of selection on a well known selfish genetic element, cytoplasmic male sterility. We provide evidence that evolution of cytoplasmic male sterility has been characterized by frequent turnovers of mutations in natural populations, thus supporting an epidemic model for the evolution of selfish genes, where new mutations repeatedly arise and rapidly sweep through populations.

Connecting Mathematics in Primary Science Inquiry Projects

Science.gov (United States)

So, Winnie Wing-mui

2013-01-01

Science as inquiry and mathematics as problem solving are conjoined fraternal twins attached by their similarities but with distinct differences. Inquiry and problem solving are promoted in contemporary science and mathematics education reforms as a critical attribute of the nature of disciplines, teaching methods, and learning outcomes involving…

Sex and monstrosity. A genealogy of the sexual police

Directory of Open Access Journals (Sweden)

Antón Fernández de Rota Irimia

2015-07-01

Full Text Available This essay outlines different forms of Western sexual police from the Seventeen Century to the present. The genealogy will approach the problem from the point of view of hermaphroditism and transvestism. By “sexual police” I mean the determinations, forms, norms and ethos that defines sex through times, as well as the categories of which it is composed, and what is permitted and is possible to do, see and say through these sexual categories. This essay, pays special attention to the fears and its embodiment in some paradigmatic figures. In particular, it analyzes the historical meaning of sexual “monstrosity”, key to understand the different polices, including the own sexual police of gender feminism.

Genealogy of Biopolitics: The Biology of the State

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Mikołaj Ratajczak

2013-01-01

Full Text Available The aim of the paper is to analyze a popular pseudo-scientific discoursein Germany in the twenties that developed an idea of a state as a living organism.The discourse was sometimes named “the biology of the state”. The aim ofthis analysis is to provide a genealogy of the term “biopolitics” that was first usedby a Swedish theoretician of the biology of the state Rudolf Kjellén and to showthe influence, that the idea of the biology of the state had on the development ofthe Nazi biopolitics. The paper reconstructs the main aspects of Michel Foucault’sgenealogy of the modern biopolitics and subsequently shows, how the idea of thebiology of the state constituted the extreme development of the naturalistic tendenciesdiagnosed by Foucault in the modern theories of (biopolitics.

Leading Undergraduate Research Projects in Mathematical Modeling

Science.gov (United States)

Seshaiyer, Padmanabhan

2017-01-01

In this article, we provide some useful perspectives and experiences in mentoring students in undergraduate research (UR) in mathematical modeling using differential equations. To engage students in this topic, we present a systematic approach to the creation of rich problems from real-world phenomena; present mathematical models that are derived…

Making mathematics with needlework ten papers and ten projects

CERN Document Server

belcastro, sarah-marie

2007-01-01

Mathematical craftwork has become extremely popular, and mathematicians and crafters alike are fascinated by the relationship between their crafts. The focus of this book, written for mathematicians, needleworkers, and teachers of mathematics, is on the relationship between mathematics and the fiber arts (including knitting, crocheting, cross-stitch, and quilting). Each chapter starts with an overview of the mathematics and the needlework at a level understandable to both mathematicians and needleworkers, followed by more technical sections discussing the mathematics, how to introduce the math

Computer Hardware, Advanced Mathematics and Model Physics pilot project final report

International Nuclear Information System (INIS)

1992-05-01

The Computer Hardware, Advanced Mathematics and Model Physics (CHAMMP) Program was launched in January, 1990. A principal objective of the program has been to utilize the emerging capabilities of massively parallel scientific computers in the challenge of regional scale predictions of decade-to-century climate change. CHAMMP has already demonstrated the feasibility of achieving a 10,000 fold increase in computational throughput for climate modeling in this decade. What we have also recognized, however, is the need for new algorithms and computer software to capitalize on the radically new computing architectures. This report describes the pilot CHAMMP projects at the DOE National Laboratories and the National Center for Atmospheric Research (NCAR). The pilot projects were selected to identify the principal challenges to CHAMMP and to entrain new scientific computing expertise. The success of some of these projects has aided in the definition of the CHAMMP scientific plan. Many of the papers in this report have been or will be submitted for publication in the open literature. Readers are urged to consult with the authors directly for questions or comments about their papers

Derin Paşaoǧlu D. Genealogy of the Crimean Khans according to “Umdet al-Akhbar” by Abdulgaffar Kyrymi

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Derya Derin Paşaoǧlu

2017-03-01

Full Text Available The article considers the genealogy of the Girayids contained in “Umdet al-Akhbar” by Abdulgaffar Kyrymi. Abdulgaffar Kyrymi was a great connoisseur of the Turkic-Tatar history. He wrote his historical work in 1747 according to the Ottoman-Turkish tradition, that is, the author gave detailed information about the history of the prophets since Adam, the history of Islam, Islamic Turkic states, the State of Seljuks and the Ottoman State, Chinggis Khan and his sons. Moreover, he collected most of the information from local sources of that period. But the main part of the work contains the history of Juchi Khan, his children and the history of the Crimea. It is for this reason that Abdulgaffar Kyrymi gives such a detailed genealogy of the Girayids and the sequence of their rules in the Crimean Khanate. Abdulgaffar Kyrymi’s genealogy begins with Chinggis Khan and his daughters (Kuchi Bike, Chechgan Bigim, Tumalyn Bigim, Elyatun Bigim, Turaly Bigim as well as with his 500 wives. But only five of them were respected: Borte Kuchin Biim, Kulan Bigim, Suyugan Khatun Bigim, Kökchi Bigim, Jeksulu Bigim. List of the Crimean dynasty of the Girayids is offered here to specialists, beginning with Haji Giray to Arslan Giray. Comparison of the list of the Girayid khans contained in “Umdet al-Akhbar” with researches on this topic reveals some differences. In the opinion of the author, to solve these problems, along with genealogical and other narrative sources, it is also necessary to use the numismatics data and a large corpus of letters of the Crimean khans to the rulers of various countries.

When Markers Meet Marketing: Ethnicity, Race, Hybridity, and Kinship in Genetic Genealogy Television Advertising

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Christine Scodari

2017-12-01

Full Text Available The essay explores issues pertaining to genetics vs. culture in understandings of kinship, hybridity as a disruptor of essentialist conceptions of race, the fetishization of ethnicity and culture, racist misuses of genetic science, processes of racialization, and counter-hegemonic resistance. Thirty- and sixty-second television advertisements airing in the U.S. from the 23andMe and AncestryDNA genetic genealogy testing services are analyzed in this context. The investigation demonstrates that genetic ancestry testing providers are well aware that their enterprise is premised on belief in the superiority of biological kinship and that hybridity is mobilized primarily as a marketing opportunity with ethnic components signified in shorthand by fetishized objects. Moreover, the categories of race and ethnicity presented in the ads give cover to racist abusers of genetic science, as the ads are consistent with socially constructed racial classifications. While maintaining this consistency, the categories are subject to adjustment based on the expectations of consumers. Resistance is possible in the use of genetic ancestry by descendants of African slaves to make localized connections to Africa, something that conventional genealogy seldom provides.

The Normalising Power of Marriage Law: An Irish Genealogy, 1945 – 2010

OpenAIRE

McGowan, Deirdre

2015-01-01

Marriage law is often conceptualised as an instrument of power that illegitimately imposes the will of the State on its citizens. Paradoxically, marriage law is also offered as a route to liberation. In this thesis, I question the efficacy of this type of analysis by investigating the actual power effects of marriage law. Using Michel Foucault’s concepts of bio-power and government, and his genealogical approach to history, I identify the role played by marriage law in governing the social do...

Who Can Know Mathematics?

Science.gov (United States)

Walshaw, Margaret

2014-01-01

This paper explores contemporary thinking about learning mathematics, and within that, social justice within mathematics education. The discussion first looks at mechanisms offered by conventional explanations on the emancipatory project and then moves towards more recent insights developed within mathematics education. Synergies are drawn between…

El currículo de las matemáticas escolares y el gobierno del sujeto moderno

DEFF Research Database (Denmark)

Valero, Paola; García, Gloria

2014-01-01

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...

An Examination of the Performance Gains of Culturally and Linguistically Diverse Students on a Mathematics Performance Assessment within the QUASAR Project.

Science.gov (United States)

Lane, Suzanne; And Others

The performance of students from different racial or ethnic subgroups and of students receiving bilingual (Spanish and English) or monolingual (English only) instruction in mathematics was studied using students from schools in the QUASAR (Qualitative Understanding Amplifying Student Achievement and Reasoning) project, a mathematics education…

A Δ11 desaturase gene genealogy reveals two divergent allelic classes within the European corn borer (Ostrinia nubilalis

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Harrison Richard G

2010-04-01

Full Text Available Abstract Background Moth pheromone mating systems have been characterized at the molecular level, allowing evolutionary biologists to study how changes in protein sequence or gene expression affect pheromone phenotype, patterns of mating, and ultimately, the formation of barriers to gene exchange. Recent studies of Ostrinia pheromones have focused on the diversity of sex pheromone desaturases and their role in the specificity of pheromone production. Here we produce a Δ11 desaturase genealogy within Ostrinia nubilalis. We ask what has been the history of this gene, and whether this history suggests that changes in Δ11 desaturase have been involved in the divergence of the E and Z O. nubilalis pheromone strains. Results The Δ11 desaturase gene genealogy does not differentiate O. nubilalis pheromone strains. However, we find two distinct clades, separated by 2.9% sequence divergence, that do not sort with pheromone strain, geographic origin, or emergence time. We demonstrate that these clades do not represent gene duplicates, but rather allelic variation at a single gene locus. Conclusions Analyses of patterns of variation at the Δ11 desaturase gene in ECB suggest that this enzyme does not contribute to reproductive isolation between pheromone strains (E and Z. However, our genealogy reveals two deeply divergent allelic classes. Standing variation at loci that contribute to mate choice phenotypes may permit novel pheromone mating systems to arise in the presence of strong stabilizing selection.

Worldwide genealogy of Entamoeba histolytica: an overview to understand haplotype distribution and infection outcome.

Science.gov (United States)

Zermeño, Valeria; Ximénez, Cecilia; Morán, Patricia; Valadez, Alicia; Valenzuela, Olivia; Rascón, Edgar; Diaz, Daniel; Cerritos, René

2013-07-01

Although Entamoeba histolytica is one of the most prevalent intestinal parasites, how the different strains of this species are distributed all over the world and how different genotypes are associated with the infection outcome are yet to be fully understood. Recently, the use of a number of molecular markers has made the characterization of several genotypes in those regions with high incidence of amoebiasis possible. This work proposes the first genealogy of E. histolytica, with an haplotype network based on two tRNA gene-linked array of Short Tandem Repeats (STRs) reported until today, and 47 sequences from 39 new isolates of Mexican Amoebic Liver Abscesses (ALA) samples. One hundred and three sequences were obtained from D-A locus, their information about the geographic region of isolation as well as clinical diagnosis were also collected. One hundred and five sequences from N-K2 locus were also obtained as well as the region of isolation, but the information about clinical diagnosis was not available in all cases. The most abundant and widely distributed haplotype in the world is the one of E. histolytica HM1:IMSS strain. This was found in Mexico, Bangladesh, Japan, China and USA and is associated to symptomatic patients as well as asymptomatic cyst passers. Many other haplotypes were found only in a single country. Both genealogies suggest that there are no lineages within the networks that may be related to a particular geographic region or infection outcome. A concatenated analysis of the two molecular markers revealed 12 different combinations, which suggests the possibility of genetic recombination events. The present study is the first to propose a global genealogy of this species and suggests that there are still many genotypes to be discovered. The genotyping of new isolates will help to understand the great diversity and genetic structure of this parasite. Copyright © 2013 Elsevier B.V. All rights reserved.

Where mathematics come from how the embodied mind brings mathematics into being

CERN Document Server

Lakoff, George

2001-01-01

This book is about mathematical ideas, about what mathematics means-and why. Abstract ideas, for the most part, arise via conceptual metaphor-metaphorical ideas projecting from the way we function in the everyday physical world. Where Mathematics Comes From argues that conceptual metaphor plays a central role in mathematical ideas within the cognitive unconscious-from arithmetic and algebra to sets and logic to infinity in all of its forms.

GENEALOGI DAN PENYEBARAN THARIQAH QADIRIYAH WA NAQSHABANDIYAH DI JAWA

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Aly Mashar

2016-11-01

Full Text Available This article investigates the geneology and spread of Thariqah Qadiriyah wa Naqshabandiyah in Java. Based on the previous literatures (Dhofier, Martin van Bruinessen, Zulkifli, and Mulyati, it was found out that in Java the genealogy of the thariqah formed by Syekh Ahmad Khatib Sambas directed to the three primary khalifah, i.e. Syekh Abdul Karim Banten, Syekh Ahmad Thalhah Cirebon, and Syekh Muhammad Hasbullah Madura, then spread out across Java Island through the four centers (on 1970s, such as Suryalaya, Rejoso, Mranggen, and Pangentongan. However, the writer found out that there were four khalifahs, including Syekhona Kholil Bangkalan Madura; with the nine dissemination centers (in 1970s including Berjan Purworejo, Sawah Pulo Surabaya, Cukir Jombang, Kencong Kediri, and Dawe Kudus.

Shop Math for the Metal Trades. Combination Welder Apprentice, Machinist Helper, Precision Metal Finisher, Sheet Metal Worker Apprentice. A Report on Metal Trades Industry Certified, Single-Concept, Mathematical Learning Projects to Eliminate Student Math Fears.

Science.gov (United States)

Newton, Lawrence R.

This project (1) identifies basic and functional mathematics skills (shop mathematics skills), (2) provides pretests on these functional mathematics skills, and (3) provides student learning projects (project sheets) that prepare metal trades students to read, understand, and apply mathematics and measuring skills that meet entry-level job…

Transitioning the GED[R] Mathematics Test to Computer with and without Accommodations: A Pilot Project

Science.gov (United States)

Patterson, Margaret Becker; Higgins, Jennifer; Bozman, Martha; Katz, Michael

2011-01-01

We conducted a pilot study to see how the GED Mathematics Test could be administered on computer with embedded accessibility tools. We examined test scores and test-taker experience. Nineteen GED test centers across five states and 216 randomly assigned GED Tests candidates participated in the project. GED candidates completed two GED mathematics…

Summer Camp of Mathematical Modeling in China

Science.gov (United States)

Tian, Xiaoxi; Xie, Jinxing

2013-01-01

The Summer Camp of Mathematical Modeling in China is a recently created experience designed to further Chinese students' academic pursuits in mathematical modeling. Students are given more than three months to research on a mathematical modeling project. Researchers and teams with outstanding projects are invited to the Summer Camp to present…

Method of computer generation and projection recording of microholograms for holographic memory systems: mathematical modelling and experimental implementation

International Nuclear Information System (INIS)

Betin, A Yu; Bobrinev, V I; Evtikhiev, N N; Zherdev, A Yu; Zlokazov, E Yu; Lushnikov, D S; Markin, V V; Odinokov, S B; Starikov, S N; Starikov, R S

2013-01-01

A method of computer generation and projection recording of microholograms for holographic memory systems is presented; the results of mathematical modelling and experimental implementation of the method are demonstrated. (holographic memory)

Rare event computation in deterministic chaotic systems using genealogical particle analysis

International Nuclear Information System (INIS)

Wouters, J; Bouchet, F

2016-01-01

In this paper we address the use of rare event computation techniques to estimate small over-threshold probabilities of observables in deterministic dynamical systems. We demonstrate that genealogical particle analysis algorithms can be successfully applied to a toy model of atmospheric dynamics, the Lorenz ’96 model. We furthermore use the Ornstein–Uhlenbeck system to illustrate a number of implementation issues. We also show how a time-dependent objective function based on the fluctuation path to a high threshold can greatly improve the performance of the estimator compared to a fixed-in-time objective function. (paper)

Smooth Transition for Advancement to Graduate Education (STAGE) for Underrepresented Groups in the Mathematical Sciences Pilot Project: Broadening Participation through Mentoring

Science.gov (United States)

Eubanks-Turner, Christina; Beaulieu, Patricia; Pal, Nabendu

2018-01-01

The Smooth Transition for Advancement to Graduate Education (STAGE) project was a three-year pilot project designed to mentor undergraduate students primarily from under-represented groups in the mathematical sciences. The STAGE pilot project focused on mentoring students as they transitioned from undergraduate education to either graduate school…

The middle-class nature of identity and its implications for education: a genealogical analysis and reevaluation of a culturally and historically bounded concept.

Science.gov (United States)

Matusov, Eugene; Smith, Mark Philip

2012-09-01

We consider identity as a historically emerging discourse that requires genealogical analysis - not to discover the roots of our identity but to commit [ourselves] to its dissipation (Foucault 1977, p. 162). We suggest analyzing identity through the history of socio-economic classes, their life struggles, ambitions, development, and reproduction. We see learning not as a project of transformation of identity, but rather as developing access to socially valuable practices and developing one's own voice within these practices (through addressing and responding to other voices). The access and voice projects free agents from unnecessary finalization and objectivization by oneself and others (Bakhtin 1999; Bakhtin 1990). In education, we should develop indigenous discourses of learning and develop a conceptual framework that makes analysis of diverse discourses possible. We argue that learning, as transformation of participation in a sociocultural practice to gain more access, is a better conceptual framework than learning as transformation of identity.

An Intervention for Early Mathematical Success: Outcomes from the Hybrid Version of the Building Math Readiness Parents as Partners (MRPP) Project

Science.gov (United States)

Kritzer, Karen L.; Pagliaro, Claudia M.

2013-01-01

The Building Math Readiness in Young Deaf/Hard-of-Hearing Children: Parents as Partners (MRPP) Project works with parents to increase the understanding of foundational mathematics concepts in their preschool deaf/hard-of-hearing (d/hh) children in preparation for formal mathematics education. A multiple-case/single-unit case study incorporating…

Feminismos: teoría y práctica. Genealogía de una discordia

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Cristina Morales Saro

2015-12-01

Full Text Available Today, discord between feminist activism and academic feminism is evident. However it reproduced a pattern that is in the basis of Western metaphysics and yet continues unquestioned. We want here problematize the dispute between theory and praxis within feminism, and we will deepen the understanding of it, doing its genealogy, after which we will be able to assess its scope and consider its usefulness or not for feminisms.

Feminismos: teoría y práctica. Genealogía de una discordia

OpenAIRE

Cristina Morales Saro

2015-01-01

Today, discord between feminist activism and academic feminism is evident. However it reproduced a pattern that is in the basis of Western metaphysics and yet continues unquestioned. We want here problematize the dispute between theory and praxis within feminism, and we will deepen the understanding of it, doing its genealogy, after which we will be able to assess its scope and consider its usefulness or not for feminisms.

A Flexible Fringe Projection Vision System with Extended Mathematical Model for Accurate Three-Dimensional Measurement.

Science.gov (United States)

Xiao, Suzhi; Tao, Wei; Zhao, Hui

2016-04-28

In order to acquire an accurate three-dimensional (3D) measurement, the traditional fringe projection technique applies complex and laborious procedures to compensate for the errors that exist in the vision system. However, the error sources in the vision system are very complex, such as lens distortion, lens defocus, and fringe pattern nonsinusoidality. Some errors cannot even be explained or rendered with clear expressions and are difficult to compensate directly as a result. In this paper, an approach is proposed that avoids the complex and laborious compensation procedure for error sources but still promises accurate 3D measurement. It is realized by the mathematical model extension technique. The parameters of the extended mathematical model for the 'phase to 3D coordinates transformation' are derived using the least-squares parameter estimation algorithm. In addition, a phase-coding method based on a frequency analysis is proposed for the absolute phase map retrieval to spatially isolated objects. The results demonstrate the validity and the accuracy of the proposed flexible fringe projection vision system on spatially continuous and discontinuous objects for 3D measurement.

The joint effects of background selection and genetic recombination on local gene genealogies.

Science.gov (United States)

Zeng, Kai; Charlesworth, Brian

2011-09-01

Background selection, the effects of the continual removal of deleterious mutations by natural selection on variability at linked sites, is potentially a major determinant of DNA sequence variability. However, the joint effects of background selection and genetic recombination on the shape of the neutral gene genealogy have proved hard to study analytically. The only existing formula concerns the mean coalescent time for a pair of alleles, making it difficult to assess the importance of background selection from genome-wide data on sequence polymorphism. Here we develop a structured coalescent model of background selection with recombination and implement it in a computer program that efficiently generates neutral gene genealogies for an arbitrary sample size. We check the validity of the structured coalescent model against forward-in-time simulations and show that it accurately captures the effects of background selection. The model produces more accurate predictions of the mean coalescent time than the existing formula and supports the conclusion that the effect of background selection is greater in the interior of a deleterious region than at its boundaries. The level of linkage disequilibrium between sites is elevated by background selection, to an extent that is well summarized by a change in effective population size. The structured coalescent model is readily extendable to more realistic situations and should prove useful for analyzing genome-wide polymorphism data.

On the Political Genealogy of Trump after Foucault

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Bruce M. Knauft

2018-01-01

Full Text Available How would Foucault have viewed Trump as President, and Trumpism in the US more generally? More realistically, how can we discern and insightfully apply genealogical insights after Foucault to better comprehend and act in relation to our current political situation in the US? Questions of factuality across a base register of asserted falsehoods are now prominent in American politics in ways that put assertions of scholarly objectivity and interpretation in yet deeper question than previously. The extent, range, and vitriol of alt-Right assertions and their viral growth in American media provoke progressivist resistance and anxiety, but how can this opposition be most productively channeled? This paper examines a range of critical perspectives, timeframes, and topical optics with respect to Trump and Trumpism, including nationalist, racist, sexist, class-based, and oligarchical dimensions. These are considered in relation to media and the incitement of polarized subjectivity and dividing practices, and also in relation to Marxist political economy, neoliberalism/neoimperialism, and postcolonialism. I then address the limit points of Foucault, including with respect to engaged political activism and social protest movements, and I consider the relevance of these for the diverse optics that political genealogy as a form of analysis might pursue. Notwithstanding and indeed because of the present impetus to take organized political action, a Foucauldian perspective is useful in foregrounding the broader late modern formations of knowledge, power, and subjectivity within which both Rightist and Leftist political sensibilities in the US are presently cast. At larger issue are the values inscribed through contemporary late modernity that inform both sides of present divisive polarities—and which make the prognosis of tipping points or future political outcomes particularly difficult. As such, productive strategies of activist opposition are likely to

Experiences of Student Mathematics-Teachers in Computer-Based Mathematics Learning Environment

Science.gov (United States)

Karatas, Ilhan

2011-01-01

Computer technology in mathematics education enabled the students find many opportunities for investigating mathematical relationships, hypothesizing, and making generalizations. These opportunities were provided to pre-service teachers through a faculty course. At the end of the course, the teachers were assigned project tasks involving…

A Review of New Mathematics Curriculum Materials.

Science.gov (United States)

Vanderlin, Carl J., Jr.

This manual outlines the nature of some of the major curriculum projects in mathematics and lists materials which are available from these projects. An introductory statement concerning the history and philosophy of each program is indicated. The curriculum projects reported on are: (1) Boston College Mathematics Institute, (2) Cambridge…

Discrete Mathematics

DEFF Research Database (Denmark)

Sørensen, John Aasted

2011-01-01

; construct a finite state machine for a given application. Apply these concepts to new problems. The teaching in Discrete Mathematics is a combination of sessions with lectures and students solving problems, either manually or by using Matlab. Furthermore a selection of projects must be solved and handed...... to accomplish the following: -Understand and apply formal representations in discrete mathematics. -Understand and apply formal representations in problems within discrete mathematics. -Understand methods for solving problems in discrete mathematics. -Apply methods for solving problems in discrete mathematics...... to new problems. Relations and functions: Define a product set; define and apply equivalence relations; construct and apply functions. Apply these concepts to new problems. Natural numbers and induction: Define the natural numbers; apply the principle of induction to verify a selection of properties...

Mathematics in Action

DEFF Research Database (Denmark)

December 2004-November 2007 Denmark, Hungary, Lithuania, the Netherlands, Norway, Slovenia and Spain have cooperated in the project Mathematics in Action (MiA). The MiA project is supported by the Grundtvig action in the Socrates program of the European Commission. The aim of the project...

Genealogía del código pedagógico del entorno

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Julio MATEOS MONTERO

2009-11-01

Full Text Available RESUMEN: El Conocimiento del Medio, área que se incorpora al curriculum de la Enseñanza Primaria en el contexto reformista de la LOGSE (Ley Orgánica de Ordenación del Sistema Educativo, tiene tras de sí una larga y compleja genealogía que transciende con mucho las explicaciones de la historiografía idealista y las justificaciones de carácter técnico o psicopedagógico.En este artículo planteo ciertas perspectivas teóricas que orientan una investigación destinada a desvelar la génesis sociohistórica del código pedagógico del entorno. A modo ilustrativo se expone una muestra de los discursos, las prácticas, las normas y otros ingredientes que intervinieron en el largo proceso de codificación de la didáctica del medio o entorno; ingredientes originalmente inventados y sedimentados en contextos pedagógicos en estrecha relación con los modos de educación. Por otra parte, mi indagación, de la que el lector obtendrá aquí una panorámica significativa, responde a un interés intelectual, compartido y socializado en un colectivo que tiene el ambicioso proyecto de contribuir elocuentemente a desvelar los discursos y las prácticas de los sistemas de enseñanza en la era del capitalismo.ABSTRACT: The knowledge of environment, subject incorporated in the curriculum of Primary School in the reforming context of the LOGSE (Organic Law of General Planning of the Educational System, has behind it a long and complex genealogy which by far goes beyond the explanations of the idealistic historiography and the justifications of technical or psychopedagogical nature. In this article I raise certain theoretical prospectives which orientate an investigation meant to unveil the sociohistorical genesis of the pedagogical code of environment. In an illustrative way an example of the discourses, the practices, norms and other ingredients is displayed/shown, which took part in the long process of codification of the environmental didactics

Educational project “Mathematics for secondary education (MATEM”, your academic task during the year 2012: participants´ perspective

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Ana Lucía Alfaro Arce

2014-06-01

Full Text Available "MATEM" is a university outreach project. Among its objectives is to improve the mathematics education at the high school level and to accomplish it public universities work together with high school´s teachers and students. The study´s aim was to research various aspects of MATEM Project to order to evaluate its development and consider recommendations for making decisions. This paper summarizes the perceptions of high school students enrolled during 2012 in courses Precalculus and Calculus, moreover the opinion of mathematics teachers. The main results were that MATEM is an academic activity attractive for math teachers and student population from different regions of the country, although sometimes are not available the necessary conditions to develop it in their respective institutions, to have passed a university course, get more practice for the standard test at the end of high school, increase their math skills and prepare for college courses were the aspects that motivate students to enroll in the project, however the development of reasoning skills and abilities were more frequently pointed by respondents.

Use of mathematical modeling in nuclear measurements projects

International Nuclear Information System (INIS)

Toubon, H.; Menaa, N.; Mirolo, L.; Ducoux, X.; Khalil, R. A.; Chany, P.; Devita, A.

2011-01-01

Mathematical modeling of nuclear measurement systems is not a new concept. The response of the measurement system is described using a pre-defined mathematical model that depends on a set of parameters. These parameters are determined using a limited set of experimental measurement points e.g. efficiency curve, dose rates... etc. The model that agrees with the few experimental points is called an experimentally validated model. Once these models have been validated, we use mathematical interpolation to find the parameters of interest. Sometimes, when measurements are not practical or are impossible extrapolation is implemented but with care. CANBERRA has been extensively using mathematical modeling for the design and calibration of large and sophisticated systems to create and optimize designs that would be prohibitively expensive with only experimental tools. The case studies that will be presented here are primarily performed with MCNP, CANBERRA's MERCURAD/PASCALYS and ISOCS (In Situ Object Counting Software). For benchmarking purposes, both Monte Carlo and ray-tracing based codes are inter-compared to show models consistency and add a degree of reliability to modeling results. (authors)

A Flexible Fringe Projection Vision System with Extended Mathematical Model for Accurate Three-Dimensional Measurement

Directory of Open Access Journals (Sweden)

Suzhi Xiao

2016-04-01

Full Text Available In order to acquire an accurate three-dimensional (3D measurement, the traditional fringe projection technique applies complex and laborious procedures to compensate for the errors that exist in the vision system. However, the error sources in the vision system are very complex, such as lens distortion, lens defocus, and fringe pattern nonsinusoidality. Some errors cannot even be explained or rendered with clear expressions and are difficult to compensate directly as a result. In this paper, an approach is proposed that avoids the complex and laborious compensation procedure for error sources but still promises accurate 3D measurement. It is realized by the mathematical model extension technique. The parameters of the extended mathematical model for the ’phase to 3D coordinates transformation’ are derived using the least-squares parameter estimation algorithm. In addition, a phase-coding method based on a frequency analysis is proposed for the absolute phase map retrieval to spatially isolated objects. The results demonstrate the validity and the accuracy of the proposed flexible fringe projection vision system on spatially continuous and discontinuous objects for 3D measurement.

Mathematics through Experience

Science.gov (United States)

Hristozova, Nedyalka

2016-01-01

The author shares some examples from her Bulgarian project, "Mathematics Through Experience", which approaches mathematics from a practical, real-life perspective in order to develop creative thinking: just like science! What was most important to her was to motivate her students to study maths and science by giving them a taste of how…

Combining project based learning with exercises in problem solving in order to train analytical mathematical skills

DEFF Research Database (Denmark)

Friesel, Anna

2013-01-01

This paper presents the contents and the teaching methods used in the fourth semester course - REG4E - an important subject in engineering, namely Control Theory and Dynamical Systems. Control Theory courses in engineering education are usually related to exercises in the laboratory or to projects....... However, in order to understand complexity of control systems, the students need to possess an analytical understanding of abstract mathematical problems. Our main goal is to illustrate the theory through the robot project, but at the same time we force our students to train their analytical skills...

Redefinisi Kaum Paderi Melalui Metodologi Genealogis Foucauldian Sebagai Rekonsiliasi Etnis Minangkabau-Batak

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Alfi Arifian

2016-11-01

Full Text Available Redefinisi Kaum Paderi merupakan konsep pendefinisian Kaum Paderi berdasarkan metodologi genealogis yang menulis sejarah berdasarkan kerangka kekinian. Definisi ini berbeda dari definisi Kaum Paderi dalam pandangan sejarah umum. Redefinisi ini dimaksudkan untuk memetakan gerakan Paderi berdasarkan konsep kekuasaan berbasis keamiran melalui gelar Tuanku Imam Bonjol merujuk kerangka kekuasaan nagari (balad-dalam pemahaman imamah. Tujuan pemetaan gerakan Paderi adalah membuktikan (secara teori bahwa ada dikotomi di tubuh Paderi sebagai gerakan pemurni Islam serta yang bersifat radikal. Dikotomi inilah yang digunakan sebagai dalih untuk membangun wacana rekonsiliasi antara etnis Minangkabau-Batak lantaran konflik masa lalu "Perang Paderi" jilid I.

School Mathematics Leaders' Beliefs about Their Role When Participating in a School Mathematics Project

Science.gov (United States)

Sexton, Matt; Downton, Ann

2014-01-01

It is not uncommon in many Australian primary schools for a teaching staff member to undertake the leadership or coordination of mathematics in his or her school. Some research (e.g., Cheeseman & Clarke, 2005) suggests that coordinators and leaders play an important role in the leadership and management of mathematics teaching and learning in…

Promotion and diffusion of tha career Bachelor and Licenciature of Mathematics Teaching in rural areas of Costa Rica project: effects and results

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Jorge Arroyo Hernández

2016-03-01

Full Text Available This article describes the purpose and activities of the project Promoting Mathematics Education in Rural Areas of Costa Rica. The activity has focused on two objectives. First, supporting and monitoring students who have expressed interest in studying a mathematics teacher. To achieve this, it has been working with students who have an ideal profile for the career, mainly from rural areas. The second objective is to conduct training workshops for high school in-service teachers, to strengthen and improve their knowledge in the area of mathematics. Among the results of the project, it can be highlighted a significant increase in the enrollment of students in the career of Mathematics Education in 2010 and 2011, and the training processes in the field of Real Functions of Real Variable and Geometry at different regional areas mostly rural as Aguirre, Sarapiquí, Coto, Buenos Aires, Limón, Cañas, Pérez Zeledón, Nicoya, Los Santos, Turrialba, Puriscal, Desamparados, San Carlos, Puntarenas, Limón, Liberia, Santa Cruz y Upala.

Feferman on foundations logic, mathematics, philosophy

CERN Document Server

Sieg, Wilfried

2017-01-01

This volume honours the life and work of Solomon Feferman, one of the most prominent mathematical logicians of the latter half of the 20th century. In the collection of essays presented here, researchers examine Feferman’s work on mathematical as well as specific methodological and philosophical issues that tie into mathematics. Feferman’s work was largely based in mathematical logic (namely model theory, set theory, proof theory and computability theory), but also branched out into methodological and philosophical issues, making it well known beyond the borders of the mathematics community. With regard to methodological issues, Feferman supported concrete projects. On the one hand, these projects calibrate the proof theoretic strength of subsystems of analysis and set theory and provide ways of overcoming the limitations imposed by Gödel’s incompleteness theorems through appropriate conceptual expansions. On the other, they seek to identify novel axiomatic foundations for mathematical practice, truth ...

Genetic Structure and Gene Flows within Horses: A Genealogical Study at the French Population Scale

OpenAIRE

Pirault, Pauline; Danvy, Sophy; Verrier, Etienne; Leroy, Gr?goire

2013-01-01

Since horse breeds constitute populations submitted to variable and multiple outcrossing events, we analyzed the genetic structure and gene flows considering horses raised in France. We used genealogical data, with a reference population of 547,620 horses born in France between 2002 and 2011, grouped according to 55 breed origins. On average, individuals had 6.3 equivalent generations known. Considering different population levels, fixation index decreased from an overall species FIT of 1.37%...

Reconstruction of tomographic images from projections of a small number of views by means of mathematical programming

International Nuclear Information System (INIS)

Kobayashi, Fujio; Yamaguchi, Shoichiro

1985-01-01

Fundamental studies have been made on the application of mathematical programming to the reconstruction of tomographic images from projections of a small number of views without requiring any circular symmetry nor periodicity. Linear programming and quadratic programming were applied to minimize the quadratic sum of the residue and to finally obtain optimized reconstruction images. The mathematical algorithms were verified by the method of computer simulation, and the relationship between the number of picture elements and the number of iterations necessary for convergence was also investigated. The methods of linear programming and quadratic programming require fairly simple mathematical procedures, and strict solutions can be obtained within a finite number of iterations. Their only draw back is the requirement of a large quantity of computer memory. But this problem will be desolved by the advent of large fast memory devices in the near future. (Aoki, K.)

Mathematics for secondary education project (Matem-UNA: perception of students about of the courses received and the profesional careers they selected for higher education

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Ana Lucía Alfaro Arce

2013-03-01

Full Text Available This paper summarizes the opinions of students who have enrolled in the Precalculus course offered by the MATEM project. The aim is to systematize the views expressed by the students enrolled in MATEM, which are related to general aspects of the project, and also to know the professional areas these students select when entering to the university. The information for this study was collected through two questionnaires administered to the participating students during 2005-2009. The most relevant results are the following: the students listed benefits from MATEM such as the opportunity to practice for their Mathematics test (Ministry of Education exam, obtaining new knowledge and developing mathematical and reasoning skills. Most students would recommend others to participate in the project. Regarding the careers that students pursue, it was found a preference for higher studies in public universities at Costa Rica; these majors include mathematics courses in their curriculum (Engineering, Economics, Statistics, Medicine, among others.

School Mathematics Leaders' Perceptions of Successes and Challenges of Their Leadership Role within a Mathematics Improvement Project

Science.gov (United States)

Sexton, Matt; Downton, Ann

2014-01-01

The mathematics curriculum leader plays an important role in leading the mathematics curriculum in primary schools. They experience successes and face challenges associated with this leadership role. The perceptions that 25 mathematics leaders held about the successes and challenges they experienced whilst participating in a school mathematics…

Mathematical Cultures : the London Meetings 2012-2014

CERN Document Server

2016-01-01

This collection presents significant contributions from an international network project on mathematical cultures, including essays from leading scholars in the history and philosophy of mathematics and mathematics education. Mathematics has universal standards of validity. Nevertheless, there are local styles in mathematical research and teaching, and great variation in the place of mathematics in the larger cultures that mathematical practitioners belong to. The reflections on mathematical cultures collected in this book are of interest to mathematicians, philosophers, historians, sociologists, cognitive scientists and mathematics educators.

Opening inquiry mathematics to parents: Can they be engaged as teachers’ partners in mathematical work?

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Ioannis Papadopoulos

2017-12-01

Full Text Available This paper presents a two-stage project designed to develop the partnership between teacher and parents. The project began with a workshop constructed to motivate parents to be interested in doing mathematics in a way that is different from the one they experienced as students and, as a result, to be eager to become involved in the co-production of didactic materials for classroom use. Parents were engaged in real, collaborative, high-level mathematical work as a first step in engaging them as partners in mathematical work with their children.  During this first stage, parents were familiarized with inquiry mathematics tasks to provide them with the foundation necessary to become partners and co-producers during the second. The findings give evidence that the learning of reform math tasks and their co-creation supported teacher and parents’ partnership and that parents were moved mathematically and personally by the experience.

Learning the Work of Ambitious Mathematics Teaching

Science.gov (United States)

Anthony, Glenda; Hunter, Roberta

2013-01-01

"Learning the Work of Ambitious Mathematics" project was developed to support prospective teachers learn the work of ambitious mathematics teaching. Building on the work of U.S. researchers in the "Learning in, from, and for Teaching Practice" project, we investigate new ways to make practice studyable within the university…

What's in a name? Y chromosomes, surnames and the genetic genealogy revolution.

Science.gov (United States)

King, Turi E; Jobling, Mark A

2009-08-01

Heritable surnames are highly diverse cultural markers of coancestry in human populations. A patrilineal surname is inherited in the same way as the non-recombining region of the Y chromosome and there should, therefore, be a correlation between the two. Studies of Y haplotypes within surnames, mostly of the British Isles, reveal high levels of coancestry among surname cohorts and the influence of confounding factors, including multiple founders for names, non-paternities and genetic drift. Combining molecular genetics and surname analysis illuminates population structure and history, has potential applications in forensic studies and, in the form of 'genetic genealogy', is an area of rapidly growing interest for the public.

LIMES Large Infrastructure in Mathematics - Enhanced Services

CERN Document Server

Fachinformationszentrum Energie, Physik, Mathematik. Karlsruhe

The Large Infrastructure in Mathematics - Enhanced Services (LIMES) Project is a RTD project within the Fifth (EC) Framework Programme - Horizontal Programme "Improving human research potential and the socio-economic knowledge base", Access to Resear The objective of this project is to upgrade the existing database Zentralblatt-MATH into a European based world class database for mathematics (pure and applied) by a process of technical improvement and wide Europeanisation, improving the present distribuited system. The goal is to make Zentralblatt MATH a world reference database, offering full coverage of the mathematics literature worldwide ncluding bibliographic data, peer reviews and/or abstracts, indexing, classification and search,

IMPROVING TEACHING MATHEMATICS USING MODERN INFORMATION TECHNOLOGIES IN FORMATION MATHEMATICAL COMPETENCE REQUIRED FUTURE SKIPPERS.

Directory of Open Access Journals (Sweden)

Elena Gudyreva

2015-10-01

Full Text Available The article is devoted to consideration of issues related to identifying the potential for teaching mathematics using network (Internet technology and the introduction of elements of distance learning into educational process of higher educational establishments of the sea profile, as well as achievement of formation of mathematical competence of students of the University generally, and of the University's Maritime profile, in particular. Based on the analysis of psychological and pedagogical literature highlights the factors that influence the increase of efficiency of independent work of students of higher educational institutions and on the formation of steady skills of self-education that ultimately leads to quality of formation of mathematical competence of a student. Specific features of teaching mathematics at the University of the sea profile. The description of the project (complex sites "KSMA. Higher mathematics navigators", who developed and used in the Kherson state Maritime Academy in the teaching of mathematics and the organization of individual techniques of distance learning, shows the simplicity and accessibility of working with complex sites, as well as the simplicity and accessibility of design "personal website", but in fact complex sites, by a teacher of any discipline of higher education. Shown, also a training process with the use of the project "KSMA. Higher mathematics navigators", analyzes the experience of teaching the course "Higher mathematics" in a higher educational institution of the marine profile with the use of a personal website, a teacher and shown positive results in students mastery of basic mathematical competencies.

Proceedings – Mathematical Sciences | Indian Academy of Sciences

Indian Academy of Sciences (India)

Home; Journals; Proceedings – Mathematical Sciences; Volume 127; Issue 1. Projections of Veronese surface and morphisms from projective plane to Grassmannian ... M2, Universite Lille 1, F-59655 Villeneuve d'Ascq Cedex, France; Institute of Mathematical Sciences, CIT Campus, Taramani, Chennai 600 113, India ...

Mathematics and Measurement.

Science.gov (United States)

Boisvert, R F; Donahue, M J; Lozier, D W; McMichael, R; Rust, B W

2001-01-01

In this paper we describe the role that mathematics plays in measurement science at NIST. We first survey the history behind NIST's current work in this area, starting with the NBS Math Tables project of the 1930s. We then provide examples of more recent efforts in the application of mathematics to measurement science, including the solution of ill-posed inverse problems, characterization of the accuracy of software for micromagnetic modeling, and in the development and dissemination of mathematical reference data. Finally, we comment on emerging issues in measurement science to which mathematicians will devote their energies in coming years.

"Father to no one": gender, genealogy, and storytelling in go down, Moses "Father to no one": gender, genealogy, and storytelling in go down, Moses

Directory of Open Access Journals (Sweden)

Barbara Ladd

2008-04-01

Full Text Available "Was", the first story of Go Down, Moses, opens with the disclaimer that the protagonist Isaac McCaslin is "father to no one" and that the story to follow: was not something participated in or even seen by himself, but by his elder cousin, McCaslin Edmonds, grandson of Isaac's father's sister and so descended by the distaff, yet notwithstanding the inheritor, and in his time the bequestor, of that which some had thought then and some still thought should have been Isaac's, since his was the name in which the title to the land had first been granted from the Indian patent and which some of the descendants of his father's slaves still bore in the land. But Isaac was not one of these... (3. What is almost immediately clear is that the hook opens with issues of gender, genealogy, and inheritance foregrounded, and that these issues concern not merely the transmission of land from generation to generation but the transmission of stories, a kind of "naming" of one's relationship to the past that echoes the assigning of family names in the above passage. "Was", the first story of Go Down, Moses, opens with the disclaimer that the protagonist Isaac McCaslin is "father to no one" and that the story to follow: was not something participated in or even seen by himself, but by his elder cousin, McCaslin Edmonds, grandson of Isaac's father's sister and so descended by the distaff, yet notwithstanding the inheritor, and in his time the bequestor, of that which some had thought then and some still thought should have been Isaac's, since his was the name in which the title to the land had first been granted from the Indian patent and which some of the descendants of his father's slaves still bore in the land. But Isaac was not one of these... (3. What is almost immediately clear is that the hook opens with issues of gender, genealogy, and inheritance foregrounded, and that these issues concern not merely the transmission of land

The comparison of Missouri mathematics project and teams games tournament viewed from emotional quotient eight grade student of junior school

Science.gov (United States)

Setyawan, Indra; Budiyono, Slamet, Isnandar

2017-08-01

This research was a quasi-experimental research with 2 × 3 factorial design. It aimed to determine the learning model between Missouri Mathematics Project (MMP) and Teams Games Tournament (TGT) that gave the best achievement on mathematics subject viewed from emotional quotient. The population of this research were all of Junior High School students at the 8th grade in Surakarta City, Central Java, Indonesia in academic year 2016/2017 which applied KTSP curriculum. The sample was taken by using stratified cluster random sampling. The data were collected by using methods of documentation, emotional quotient questionnaires, and mathematics achievement test. Data analysis technique used two ways analysis of variance (ANOVA) with unequal cell. According to the research findings, it could be concluded that: (1) students' mathematics achievement which were taught by using MMP is as good as emotional quotient achievement which were taught by using TGT in straight-line equation material, (2) mathematics achievement of students with high emotional quotient is better than students with medium and low emotional quotient, and mathematics achievement of students with medium emotional quotient is as good as students with low emotional quotient in straight-line equation material, (3) in each learning model, mathematics achievement of students with high emotional quotient is better than students with medium and low emotional quotient, and mathematics achievement of students with medium emotional quotient is as good as students with low emotional quotient in straight-line equation material (4) in each category of high and medium emotional quotient, student's mathematics achievement which were taught by using MMP is better than student's mathematics achievement which were taught by using TGT and in low emotional quotient student's mathematics achievement which were taught by using MMP is as good as student's mathematics achievement which were taught by using TGT in straight

TIMSS 2003: Relating dimensions of mathematics attitude to mathematics achievement

Directory of Open Access Journals (Sweden)

Kadijević Đorđe

2008-01-01

Full Text Available This study, which used a sample of 137,346 students from thirty three countries that participated in the TIMSS 2003 project in the eighth grade, examined the features of the individual and collective relations of three dimensions of mathematics attitude to mathematics achievement (MA, searching for the dimension mostly related to that achievement. The three dimensions of mathematics attitude were self-confidence in learning mathematics (SCLM, liking mathematics (LM and usefulness of mathematics (UM. By utilizing psychometrically valid and reliable measures of the three dimensions, it was found that: (1 each dimension of mathematics attitude alone was positively related to MA for almost all thirty three countries; (2 SCLM was primarily related to MA for thirty one countries; (3 when the two other dimensions were held constant, SCLM was positively related to MA for thirty three countries, LM was negatively related to MA for thirty countries, whereas UM was not related to MA for twenty one countries; (4 positive collective relationships of SCLM, LM and UM to MA considerably varied from country to country. Implications for research and practice are included.

The Language of Mathematics in Science

Science.gov (United States)

Boohan, Richard

2016-01-01

"The Language of Mathematics in Science" is an ASE/Nuffield project aimed at supporting teachers of 11-16 science in the use of mathematical ideas in the science curriculum. Two publications have been produced. This article focuses on the first of these, "The Language of Mathematics in Science: A Guide for Teachers of 11-16…

Advanced engineering mathematics

CERN Document Server

Jeffrey, Alan

2001-01-01

Advanced Engineering Mathematics provides comprehensive and contemporary coverage of key mathematical ideas, techniques, and their widespread applications, for students majoring in engineering, computer science, mathematics and physics. Using a wide range of examples throughout the book, Jeffrey illustrates how to construct simple mathematical models, how to apply mathematical reasoning to select a particular solution from a range of possible alternatives, and how to determine which solution has physical significance. Jeffrey includes material that is not found in works of a similar nature, such as the use of the matrix exponential when solving systems of ordinary differential equations. The text provides many detailed, worked examples following the introduction of each new idea, and large problem sets provide both routine practice, and, in many cases, greater challenge and insight for students. Most chapters end with a set of computer projects that require the use of any CAS (such as Maple or Mathematica) th...

A model of professional competences in mathematics to update mathematical and didactic knowledge of teachers

Science.gov (United States)

Díaz, Verónica; Poblete, Alvaro

2017-07-01

This paper describes part of a research and development project carried out in public elementary schools. Its objective was to update the mathematical and didactic knowledge of teachers in two consecutive levels in urban and rural public schools of Region de Los Lagos and Region de Los Rios of southern Chile. To that effect, and by means of an advanced training project based on a professional competences model, didactic interventions based on types of problems and types of mathematical competences with analysis of contents and learning assessment were designed. The teachers' competence regarding the didactic strategy used and its results, as well as the students' learning achievements are specified. The project made possible to validate a strategy of lifelong improvement in mathematics, based on the professional competences of teachers and their didactic transposition in the classroom, as an alternative to consolidate learning in areas considered vulnerable in two regions of the country.

The TIMSS Videotape Classroom Study: Methods and Findings from an Exploratory Research Project on Eighth-Grade Mathematics Instruction in Germany, Japan, and the United States.

Science.gov (United States)

Stigler, James W.; Gonzales, Patrick; Kawanaka, Takako; Knoll, Steffen; Serrano, Ana

1999-01-01

Describes the methods and preliminary findings of the Videotape Classroom Study, a video survey of eighth-grade mathematics lessons in Germany, Japan, and the United States. Part of the Third International Mathematics and Science study, this research project is the first study of videotaped records from national probability samples. (SLD)

Science and mathematics teachers of the future

DEFF Research Database (Denmark)

Michelsen, Claus; Nielsen, Jan Alexis; Petersen, Morten Rask

2008-01-01

This paper presents the project Science and Mathematics Teachers of the Future. The aim of the project is to develop and implement a graduate level equivalent degree program in mathematics and science instruction for in-service teachers of lower secondary education. This aim is achieved...... in the programme through involving the teachers in design, implementation and evaluation of innovative instructional sequences, which deals with a wide range of aspects of mathematics and science, e.g. modern science and the importance of science in society. In the program contemporary science and mathematics...... education research serves as a basis for the design and development of warranted practices with which the teachers may experiment in their classroom. We will focus on the outcomes of offering a program which is intimately tied to (i) contemporary science and mathematics education research, (ii) modern...

Host specificity and genealogy of the louse Polyplax serrata on field mice, Apodemus species: a case of parasite duplication or colonisation?

Science.gov (United States)

Stefka, Jan; Hypsa, Václav

2008-05-01

The genealogy, population structure and population dynamics of the sucking louse Polyplax serrata were analysed across four host species of the genus Apodemus. An analysis of 126 sequences of cytochrome c oxidase subunit I using phylogenetic approaches and haplotype networking revealed a clear structure of European samples, forming three distinct and genetically distant clades with different host specificities. Although a clear connection was detected between the host and parasite genealogies/phylogenies, a uniform pattern of co-speciation was not found. For example, a dramatic shift in the degree of host specificity was demonstrated for two related louse lineages living in sympatry and sharing one of their host species. While one of the louse lineages frequently parasitised two different host taxa (Apodemus sylvaticus and Apodemus flavicollis), the other louse lineage was strictly specific to A. flavicollis. The estimate of divergence time between the two louse lineages indicates that they may have arisen due to parasite duplication on A. flavicollis.

EULER - A Real Virtual Library for Mathematics

CERN Document Server

Jost, Michael

2004-01-01

The EULER project completed its work in November 2002. It forms the last part of a very successful project in the specialized but global discipline of mathematics. After a successful RTD project had created the technology, a take-up project has effectively exploited it to the point where its future is assured through a not-for-profit consortium. EULER is a European based, world class, real virtual library for mathematics with up-to-date technological solutions, well accepted by users. In particular, EULER provides a world reference and delivery service, transparent to the end user and offering full coverage of the mathematics literature world-wide, including bibliographic data, peer reviews and/or abstracts, indexing, classification and search, transparent access to library services, co-operation with commercial information providers (publishers, bookstores). The EULER services provide a gateway to the electronic catalogues and repositories of participating institutions, while the latter retain complete respo...

The Philosophical Genealogy of Taylor's Social Imaginaries: A Complex History of Ideas and Predecessors.

Science.gov (United States)

Vanheeswijck, Guido M

2017-01-01

The deepest sources of Charles Taylor's use of the concept "social imaginaries" are often related to political philosophy or social anthropology (Anderson, Castoriadis). The purpose of this article is to show that they also form part of Taylor's struggle to overcome the epistemological construal in modern philosophy and culture. Taylor locates the concept "social imaginaries" in the Kantian tradition, identifying their role to that of transcendental schemes. However, there remains a central difference between Kant's transcendental schemes and Taylor's social imaginaries. To elucidate that difference, this article will track the philosophical genealogy of Taylor's concept of "social imaginaries" in three steps.

Mathematical potential of special education students

OpenAIRE

Peltenburg, M.C.

2012-01-01

This PhD research was aimed at investigating the mathematical potential of special education (SE) students. SE students often have a severe delay in their mathematical development compared to peers in regular education. However, there are indications that SE students could attain more and that there might be unused talent in SE students. In the research project, two mathematical domains were chosen as a topic of investigation. One topic is part of the mathematics curriculum in SE and is gener...

Genetic variability within french race and riding horse breeds from genealogical data and blood marker polymorphisms

OpenAIRE

Moureaux, Sophie; Verrier, Etienne; Ricard, Anne; Meriaux, J-Claude

1996-01-01

The genetic variability of five horse breeds raised in France was analysed: Thoroughbred, Trotteur Français, Arab, Anglo-Arab and Selle Français. Genealogical data and genotypes at seven blood group and nine protein loci were used. Paternal family sizes were found to be unbalanced, especially in Trotteur français, Selle Franqais and Thoroughbred. Average coefficients of inbreeding for offspring born from 1989 to 1992 were 1.02 (Thoroughbred), 1.86 (Trotteur Français), 3.08 (Arab), 1.17 (...

Mathematics Crises in our Schools: Causes and Remedies | Osafo ...

African Journals Online (AJOL)

The presentation will discuss findings from an NGO project - 'Improving Teaching and Learning of Mathematics in Basic Schools'. The project has taken the presenter to several schools across the country, observing and supporting teachers in their implementation of the curriculum. (Mathematics Connection: 2001 2: 4-6) ...

Early mathematics intervention in a Danish municipality

DEFF Research Database (Denmark)

Lindenskov, Lena; Weng, Peter

2013-01-01

We describe a pilot project 2009 – 2010 about early intervention in second grade mathematics (about 8 years old) in Frederiksberg, a Danish urban municipality. We shortly describe the background of the pilot project, aims and organisation in four design cycles. We explore the pilot teachers......' feedback during the pilot process, how pilot teacher feedback was applied in material production, and the relations between the feedback and the project’s theoretical basis. The project is based on original theory (Math Holes theory), but international frameworks, like Mathematics Recovery, serve...

The many faces of the mathematical modeling cycle

NARCIS (Netherlands)

Perrenet, J.C.; Zwaneveld, B.

2012-01-01

In literature about mathematical modeling a diversity can be seen in ways of presenting the modeling cycle. Every year, students in the Bachelor’s program Applied Mathematics of the Eindhoven University of Technology, after having completed a series of mathematical modeling projects, have been

How we understand mathematics conceptual integration in the language of mathematical description

CERN Document Server

Woźny, Jacek

2018-01-01

This volume examines mathematics as a product of the human mind and analyzes the language of "pure mathematics" from various advanced-level sources. Through analysis of the foundational texts of mathematics, it is demonstrated that math is a complex literary creation, containing objects, actors, actions, projection, prediction, planning, explanation, evaluation, roles, image schemas, metonymy, conceptual blending, and, of course, (natural) language. The book follows the narrative of mathematics in a typical order of presentation for a standard university-level algebra course, beginning with analysis of set theory and mappings and continuing along a path of increasing complexity. At each stage, primary concepts, axioms, definitions, and proofs will be examined in an effort to unfold the tell-tale traces of the basic human cognitive patterns of story and conceptual blending. This book will be of interest to mathematicians, teachers of mathematics, cognitive scientists, cognitive linguists, and anyone interested...

Genealogical and molecular analysis of a family-based cohort of congenital heart disease patients from the São Miguel Island (Azores, Portugal).

Science.gov (United States)

Cabral, Rita; Pires, Renato; Anjos, Rui; Branco, Claudia C; Maciel, Paula; Mota-Vieira, Luisa

2016-11-01

Congenital heart disease (CHD) is one common birth malformation, accounting for ∼30% of total congenital abnormalities. Considering the unknown role of consanguinity in causing CHD, this study hypothesised that consanguineous unions and/or familial aggregation may be frequent in the Azorean Island of São Miguel (Portugal). To that end, a retrospective observational study was performed based on genealogical and molecular analyses. The study enrolled 112 CHD patients from São Miguel Island, which allowed the assessment of type of family (simplex or multiplex), parental consanguinity and grandparental endogamy. Based on 15 STR markers, inbreeding coefficients (F IS ) in the CHD cohort and healthy control group (n = 114) were estimated. Multiplex families were 37.6% (n = 41/109), a rate considerably higher than previously described in the literature (genealogical and genetic features related with CHD, revealing the presence of parental consanguinity and extensive familial aggregation in the CHD patients from São Miguel Island.

Core skills assessment to improve mathematical competency

Science.gov (United States)

Carr, Michael; Bowe, Brian; Fhloinn, Eabhnat Ní

2013-12-01

Many engineering undergraduates begin third-level education with significant deficiencies in their core mathematical skills. Every year, in the Dublin Institute of Technology, a diagnostic test is given to incoming first-year students, consistently revealing problems in basic mathematics. It is difficult to motivate students to address these problems; instead, they struggle through their degree, carrying a serious handicap of poor core mathematical skills, as confirmed by exploratory testing of final year students. In order to improve these skills, a pilot project was set up in which a 'module' in core mathematics was developed. The course material was basic, but 90% or higher was required to pass. Students were allowed to repeat this module throughout the year by completing an automated examination on WebCT populated by a question bank. Subsequent to the success of this pilot with third-year mechanical engineering students, the project was extended to five different engineering programmes, across three different year-groups. Full results and analysis of this project are presented, including responses to interviews carried out with a selection of the students involved.

Michel Foucault and the genealogy as a criticism of the present

Directory of Open Access Journals (Sweden)

Selvino José Assmann

2007-04-01

Full Text Available The main goal of this paper is to analyze the criticism to modernity that is in Foucault’s genealogy. First we discuss Focault’s analysis of Kant’s article on Aufklärung and Baudelaire’s concept of dandy. So, we focus gave emphasis the “truth analytic” and its ontextualization made by Foucault of the social role of an intellectual in the light of the great changes in knowledge and in the practices of power in the last decades. To conclude, we suggest that, by studying the Aufklärung investigating the excess of modern racionality, Foucault tries to reassess the possibilities of freedom practices, sustaining the criticism exercise as philosophical ethos. This is needed to redefine the governability and ethical and political commitments made by the agents in different social places.

Replication of genetic associations as pseudoreplication due to shared genealogy.

Science.gov (United States)

Rosenberg, Noah A; Vanliere, Jenna M

2009-09-01

The genotypes of individuals in replicate genetic association studies have some level of correlation due to shared descent in the complete pedigree of all living humans. As a result of this genealogical sharing, replicate studies that search for genotype-phenotype associations using linkage disequilibrium between marker loci and disease-susceptibility loci can be considered as "pseudoreplicates" rather than true replicates. We examine the size of the pseudoreplication effect in association studies simulated from evolutionary models of the history of a population, evaluating the excess probability that both of a pair of studies detect a disease association compared to the probability expected under the assumption that the two studies are independent. Each of nine combinations of a demographic model and a penetrance model leads to a detectable pseudoreplication effect, suggesting that the degree of support that can be attributed to a replicated genetic association result is less than that which can be attributed to a replicated result in a context of true independence.

Applied Computational Mathematics in Social Sciences

CERN Document Server

Damaceanu, Romulus-Catalin

2010-01-01

Applied Computational Mathematics in Social Sciences adopts a modern scientific approach that combines knowledge from mathematical modeling with various aspects of social science. Special algorithms can be created to simulate an artificial society and a detailed analysis can subsequently be used to project social realities. This Ebook specifically deals with computations using the NetLogo platform, and is intended for researchers interested in advanced human geography and mathematical modeling studies.

Connecting Mathematics Learning through Spatial Reasoning

Science.gov (United States)

Mulligan, Joanne; Woolcott, Geoffrey; Mitchelmore, Michael; Davis, Brent

2018-01-01

Spatial reasoning, an emerging transdisciplinary area of interest to mathematics education research, is proving integral to all human learning. It is particularly critical to science, technology, engineering and mathematics (STEM) fields. This project will create an innovative knowledge framework based on spatial reasoning that identifies new…

History and Sociology: A genealogical perspective

Directory of Open Access Journals (Sweden)

Ştefan UNGUREAN

2012-01-01

Full Text Available What could we possibly learn from a 70 year correspondence from the years of the Second World War, when the course of subsequent history has already been known? The sociologist is interested in seeing how an event unfolds, how it generates other actions, how the actors are driven by, what their strategies are and how they interact. The aim of the present essay is to identify those sociological concepts, that could lead us to explanations of the geopolitical, regarding the way Germany built up its hegemony, by starting from a genealogical perspective, that is, by identifying the logics of a situation and by understanding the reasoning behind individual decision while taking into consideration the analysis of the discourse. We take into account how enforcing a drastic peace treaty on Germany has lead to high surveillance costs that could not be sustained by the victors because of their path dependence, which ultimately led to the fact of the ‘good’ being sacrificed for the sake of the ‘comfortable’. We understand how military successes represent the test of truth for an ideology and provide the Nazi leaders with their legitimacy, inciting a group phantasm. We discern, in the relations between Germany, Soviet Union and the French-English duo, all the elements of a triad and, implicitly, all elements of power that are generated by a game based on imposing and accepting uncertainties. All of the above bare evidence to the fact that sociological notions and concepts can produce revelations when taken into new domains, such as geopolitics and war.

TDmat--Mathematics Diagnosis Evaluation Test for Engineering Sciences Students

Science.gov (United States)

Pinto, J. S.; Oliveira, M. P.; Anjo, A. B.; Pais, S. I. Vieira; Isidro, R. O.; Silva, M. H.

2007-01-01

Since 1989, the Mathematics Education Project (PmatE--Projecto Matematica Ensino) has developed several strategies to improve the success of students in Mathematics. The most important of these are mathematical games for all grades above primary school. The online evaluation of Mathematics subjects is one of PmatE's goals. The implementation of an…

Connecting mathematics learning through spatial reasoning

Science.gov (United States)

Mulligan, Joanne; Woolcott, Geoffrey; Mitchelmore, Michael; Davis, Brent

2018-03-01

Spatial reasoning, an emerging transdisciplinary area of interest to mathematics education research, is proving integral to all human learning. It is particularly critical to science, technology, engineering and mathematics (STEM) fields. This project will create an innovative knowledge framework based on spatial reasoning that identifies new pathways for mathematics learning, pedagogy and curriculum. Novel analytical tools will map the unknown complex systems linking spatial and mathematical concepts. It will involve the design, implementation and evaluation of a Spatial Reasoning Mathematics Program (SRMP) in Grades 3 to 5. Benefits will be seen through development of critical spatial skills for students, increased teacher capability and informed policy and curriculum across STEM education.

Genealogy and the Consecration of the Biopolitics Term. Interchanges Between Esposito, Arendt and Foucault

Directory of Open Access Journals (Sweden)

Lara Emanuele da Luz

2017-11-01

Full Text Available The present article intends, on the one hand, to study the genealogy of the term biopolitics, passing through the term bíos. To support this reflection, the first part of the book by Roberto Esposito, Bíos, will be used. The term biopolitics undergoes a mutation since its first use in 1905. On the other hand, based on the data presented in the first part of the chapter, an analysis of the consecration of the term made by Michel Foucault will be made. In the course of the article, besides Foucault and Esposito, a connection will be made to the Arendtian work

Evaluating the mathematical models to Solve Job Shop Problem with the Use of human resources specialists in projects

Directory of Open Access Journals (Sweden)

Renato Penha

2012-10-01

Full Text Available A project can be defined as a complex system. This requires the use of resources (human, material, technology, etc., allocated among alternative uses, as a means to achieve specific goals by the presence of constraints of different orders. The planning, allocation and prioritization of resources, including human resource specialists (HRE, is performed by means of single project management.This treatment can cause internal strife by using the same resource or even its underuse, and may worsen in software development environments due to the high degree of interdependence, uncertainty and risk of each project. This need is related to the so called Job Shop Problem (JSP. In this context, the objective of this study is to evaluate the mathematical models of genetic algorithm and optimization and their contributions to solve Job Shop Problem in software development projects with the use of human resources specialists.

Identifying Avenues for Curriculum Development in Undergraduate Mathematics.

Science.gov (United States)

Frid, Sandra; And Others

The study reported in this paper represents the first stage of a five-year project aimed at improving the quality of teaching and learning in undergraduate mathematics courses for science and engineering students. Students were surveyed about their confidence in their mathematics background, their confidence with current mathematics topics, and…

Applied Wave Mathematics Selected Topics in Solids, Fluids, and Mathematical Methods

CERN Document Server

Quak, Ewald

2009-01-01

This edited volume addresses the importance of mathematics in wave-related research, and its tutorial style contributions provide educational material for courses or seminars. It presents highlights from research carried out at the Centre for Nonlinear Studies in Tallinn, Estonia, the Centre of Mathematics for Applications in Oslo, Norway, and by visitors from the EU project CENS-CMA. The example applications discussed include wave propagation in inhomogeneous solids, liquid crystals in mesoscopic physics, and long ship waves in shallow water bodies. Other contributions focus on specific mathe

Development of a Multidisciplinary Middle School Mathematics Infusion Model

Science.gov (United States)

Russo, Maria; Hecht, Deborah; Burghardt, M. David; Hacker, Michael; Saxman, Laura

2011-01-01

The National Science Foundation (NSF) funded project "Mathematics, Science, and Technology Partnership" (MSTP) developed a multidisciplinary instructional model for connecting mathematics to science, technology and engineering content areas at the middle school level. Specifically, the model infused mathematics into middle school curriculum…

Applied Mathematical Problems in Engineering

Directory of Open Access Journals (Sweden)

Carlos Llopis-Albert

2016-10-01

Full Text Available There is a close relationship between engineering and mathematics, which has led to the development of new techniques in recent years. Likewise the developments in technology and computers have led to new ways of teaching mathematics for engineering students and the use of modern techniques and methods.  This research aims to provide insight on how to deal with mathematical problems for engineering students. This is performed by means of a fuzzy set/Qualitative Comparative Analysis applied to conflict resolution of Public Participation Projects in support to the EU Water Framework Directive.

The Chernobyl reactor accident, ten years on. Teaching projects for mathematics instruction in interdisciplinary working groups

International Nuclear Information System (INIS)

Boer, H.; Delle, E.; Mies, K.; Warmeling, A.

1996-01-01

The booklet presents background information and addresses the following aspects: ionizing radiation and radiation effects; safety of German nuclear power plants; statistical evidence of radiation injuries; short-lived and long-lived ionizing radiation; radioactive waste; CO 2 emissions as an argument in favour of nuclear power generation. The material presented is intended for use by a school project team interested in the subjects, or as a basis for collaborative, interdisciplinary teaching in working groups, and it offers information and problems for mathematics teaching. (HP) [de

Pareto genealogies arising from a Poisson branching evolution model with selection.

Science.gov (United States)

Huillet, Thierry E

2014-02-01

We study a class of coalescents derived from a sampling procedure out of N i.i.d. Pareto(α) random variables, normalized by their sum, including β-size-biasing on total length effects (β Poisson-Dirichlet (α, -β) Ξ-coalescent (α ε[0, 1)), or to a family of continuous-time Beta (2 - α, α - β)Λ-coalescents (α ε[1, 2)), or to the Kingman coalescent (α ≥ 2). We indicate that this class of coalescent processes (and their scaling limits) may be viewed as the genealogical processes of some forward in time evolving branching population models including selection effects. In such constant-size population models, the reproduction step, which is based on a fitness-dependent Poisson Point Process with scaling power-law(α) intensity, is coupled to a selection step consisting of sorting out the N fittest individuals issued from the reproduction step.

Mathematics for multimedia

CERN Document Server

Wickerhauser, Mladen Victor

2003-01-01

Mathematics and Multimedia focuses on the mathematics behind multimedia applications. This timely and thoroughly modern text is a rigorous survey of selected results from algebra and analysis, requiring only undergraduate math skills.The topics are `gems' chosen for their usefulness in understanding and creating application software for multimedia signal processing and communication.The book is aimed at a wide audience, including computer science and mathematics majors and those interested in employing mathematics in multimedia design and implementation. For the instructor, the material is divided into six chapters that may be presented in six lecture hours each. Thus, the entire text may be covered in one semester, with time left for examinations and student projects. For the student,there are more than 100 exercises with complete solutions, and numerous example programs in Standard C. Each chapter ends with suggestions for further reading. A companion website provides more insight for both instructors and s...

Mathematics and culture in Micronesia

Directory of Open Access Journals (Sweden)

A. J. (Sandy Dawson

2015-07-01

Full Text Available Wheatley and Frieze‟s book, Walk Out Walk On, provides the conceptual framework for an examination of Project MACIMISE, a National Science Foundation funded project that focused on the languages and cultural practices of nine Pacific islands and the state of Hawai„i. MACIMISE, pronounced as if spelled „maximize‟, is a 5-year Project. The Project‟s task is the development of elementary school mathematics curriculum units sensitive to local mathematical thought and experience. There were twenty-one participants (who call themselves the Macimisers in the Project. The participants were educated in ethnographic and anthropological research strategies to enable them to retrieve/uncover cultural practices extant in the communities where they lived. This academics work was accomplished partially via distance learning when the participants were registered in advanced degree programs at the University of Hawai„i—Mānoa. In this paper, the Project is analyzed in terms of the concepts (scaling across, start anywhere—follow it everywhere, intervention to friendship, the art of hosting and the use of circle advanced by Wheatley and Frieze.

The genealogy and genetic viability of reintroduced Yellowstone grey wolves.

Science.gov (United States)

Vonholdt, Bridgett M; Stahler, Daniel R; Smith, Douglas W; Earl, Dent A; Pollinger, John P; Wayne, Robert K

2008-01-01

The recovery of the grey wolf in Yellowstone National Park is an outstanding example of a successful reintroduction. A general question concerning reintroduction is the degree to which genetic variation has been preserved and the specific behavioural mechanisms that enhance the preservation of genetic diversity and reduce inbreeding. We have analysed 200 Yellowstone wolves, including all 31 founders, for variation in 26 microsatellite loci over the 10-year reintroduction period (1995-2004). The population maintained high levels of variation (1995 H(0) = 0.69; 2004 H(0) = 0.73) with low levels of inbreeding (1995 F(IS) = -0.063; 2004 F(IS) = -0.051) and throughout, the population expanded rapidly (N(1995) = 21; N(2004) = 169). Pedigree-based effective population size ratios did not vary appreciably over the duration of population expansion (1995 N(e)/N(g) = 0.29; 2000 N(e)/N(g) = 0.26; 2004 N(e)/N(g) = 0.33). We estimated kinship and found only two of 30 natural breeding pairs showed evidence of being related (average r = -0.026, SE = 0.03). We reconstructed the genealogy of 200 wolves based on genetic and field data and discovered that they avoid inbreeding through a wide variety of behavioural mechanisms including absolute avoidance of breeding with related pack members, male-biased dispersal to packs where they breed with nonrelatives, and female-biased subordinate breeding. We documented a greater diversity of such population assembly patterns in Yellowstone than previously observed in any other natural wolf population. Inbreeding avoidance is nearly absolute despite the high probability of within-pack inbreeding opportunities and extensive interpack kinship ties between adjacent packs. Simulations showed that the Yellowstone population has levels of genetic variation similar to that of a population managed for high variation and low inbreeding, and greater than that expected for random breeding within packs or across the entire breeding pool. Although short

Under-Threes' Mathematical Learning--Teachers' Perspectives

Science.gov (United States)

Franzén, Karin

2014-01-01

This project highlights preschool teachers' views of toddlers' learning in mathematics. The Swedish national curriculum covers even the youngest children who are 1-3?years old. Interesting questions are thus: what should mathematics be for this age group and how should preschool teachers work with maths to achieve the curriculum objectives? Data…

Theorema 2.0: Computer-Assisted Natural-Style Mathematics

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Bruno Buchberger

2016-01-01

Full Text Available The Theorema project aims at the development of a computer assistant for the working mathematician. Support should be given throughout all phases of mathematical activity, from introducing new mathematical concepts by definitions or axioms, through first (computational experiments, the formulation of theorems, their justification by an exact proof, the application of a theorem as an algorithm, until to the dissemination of the results in form of a mathematical publication, the build up of bigger libraries of certified mathematical content and the like. This ambitious project is exactly along the lines of the QED manifesto issued in 1994 (see e.g. http://www.cs.ru.nl/~freek/qed/qed.html and it was initiated in the mid-1990s by Bruno Buchberger. The Theorema system is a computer implementation of the ideas behind the Theorema project. One focus lies on the natural style of system input (in form of definitions, theorems, algorithms, etc., system output (mainly in form of mathematical proofs and user interaction. Another focus is theory exploration, i.e. the development of large consistent mathematical theories in a formal frame, in contrast to just proving single isolated theorems. When using the Theorema system, a user should not have to follow a certain style of mathematics enforced by the system (e.g. basing all of mathematics on set theory or certain variants of type theory, rather should the system support the user in her preferred flavour of doing math. The new implementation of the system, which we refer to as Theorema 2.0, is open-source and available through GitHub.

Divorcing China: The Swing from the Patrilineal Genealogy of China to the Matrilineal Genealogy of Taiwan in Taiwan’s National Imagination

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Yin C. Chuang

2011-01-01

Full Text Available This paper explores the popular concept of the relationship between Taiwan and China as a feminine/ masculine dichotomy which has been constructed within Taiwan’s national imagination. First, I will focus on how this dichotomy has been created within the process of identity-shifting in Taiwan since the 1990s as manifested in Taiwanese pop songs. Second, I will demonstrate how it has been appropriated within the process of nation-building. Two primary questions will be addressed: How is the national imagination of Taiwan in Taiwanese pop songs constructed through maternal and feminine images? How is the matrilineal genealogy in Taiwanese pop songs appropriated by the opposition camp, namely the Democratic Progressive Party (DPP, to mobilize voters? I will investigate, from a cultural studies perspective, how cultural imagination has come to serve as the vehicle to formulate resistance, mobilize voters, gain power and, most importantly, reconstruct Taiwanese nationalism within Taiwan’s political limbo for decades. Furthermore, Margaret Somers’ discussion (1993, 1994, 1995a, 1995b, 1995c; Somers and Gibson 1994 of narrative identity is adopted as the framework for this paper in order to look at how identities are constructed within and across multiple realms. My research methods consist of conducting in-depth interviews and analysing texts.

Mathematical manipulative models: in defense of "beanbag biology".

Science.gov (United States)

Jungck, John R; Gaff, Holly; Weisstein, Anton E

2010-01-01

Mathematical manipulative models have had a long history of influence in biological research and in secondary school education, but they are frequently neglected in undergraduate biology education. By linking mathematical manipulative models in a four-step process-1) use of physical manipulatives, 2) interactive exploration of computer simulations, 3) derivation of mathematical relationships from core principles, and 4) analysis of real data sets-we demonstrate a process that we have shared in biological faculty development workshops led by staff from the BioQUEST Curriculum Consortium over the past 24 yr. We built this approach based upon a broad survey of literature in mathematical educational research that has convincingly demonstrated the utility of multiple models that involve physical, kinesthetic learning to actual data and interactive simulations. Two projects that use this approach are introduced: The Biological Excel Simulations and Tools in Exploratory, Experiential Mathematics (ESTEEM) Project (http://bioquest.org/esteem) and Numerical Undergraduate Mathematical Biology Education (NUMB3R5 COUNT; http://bioquest.org/numberscount). Examples here emphasize genetics, ecology, population biology, photosynthesis, cancer, and epidemiology. Mathematical manipulative models help learners break through prior fears to develop an appreciation for how mathematical reasoning informs problem solving, inference, and precise communication in biology and enhance the diversity of quantitative biology education.

Modeling Clinic for Industrial Mathematics: A Collaborative Project Under Erasmus+ Program

DEFF Research Database (Denmark)

Jurlewicz, Agnieszka; Nunes, Claudia; Russo, Giovanni

2018-01-01

Modeling Clinic for Industrial Mathematics (MODCLIM) is a Strategic Partnership for the Development of Training Workshops and Modeling Clinic for Industrial Mathematics, funded through the European Commission under the Erasmus Plus Program, Key Action 2: Cooperation for innovation and the exchang...

Talking the talk…but walking the walk? How do non-specialist mathematics teachers come to see themselves as mathematics teachers?

OpenAIRE

Crisan, C.; Rodd, M.

2014-01-01

In order to address the shortage of mathematics teachers in England, the UK government has funded various in-service subject knowledge courses for practising teachers, who are not mathematics specialists. These courses aim to develop these teachers’ mathematical subject knowledge (e.g., DfE 2014). In this TAS session we will report on a research project which was set up to investigate how teachers on the in-service programmes offered by our institution developed as teachers of mathematics. We...

Genealogía hipnótica del mito del zombi: The Magic Island (1929

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Carcavilla Puey, Lorenzo

2013-06-01

Full Text Available This is the first of series of articles that aims to study the history and psychological significance of the “myth of the zombie” through the analysis of its allegorical and symbolic elements, based on a myth’s conceptualization extracted from the notions of Jung’s analytical psychology and Eliade’s history of religions. Here, we’ll look deeply into the symbolic genealogy that comes before and it’s inserted in zombie conception in Seabrook’s The magic island (first text where zombie appears as living dead through a comparative analysis with the somnambulist in literature and filmography of “the dark side of animal magnetism and hypnosis” and its connection with the automaton.Este es el primero de una serie de artículos en los que se pretende estudiar la historia y la significación psicológica del “mito del zombi” a través del análisis de sus elementos alegóricos y simbólicos partiendo de una conceptualización de “mito” extraída de las nociones de la psicología analítica de Jung y de la historia de las religiones de Eliade. Aquí profundizaremos en la genealogía simbólica que antecede y se inserta en la concepción del zombi en The Magic Island de Seabrook (primer texto donde aparece el zombi como muerto viviente a través del análisis comparativo con el sonámbulo de la literatura y cinematografía del “lado oscuro del magnetismo animal y la hipnosis” y su relación con el autómata.

ACADEMIC GENEALOGIES WITH RESPECT TO NARRATIVE IN HUMAN AND SOCIAL SCIENCES AND THEIR IMPLICATION FOR PUBLIC POLICIES

Science.gov (United States)

Fujii, Satoshi; Hasegawa, Taiki; Nakano, Takeshi; Hatori, Tsuyoshi

In human and society science, narrative is regarded as an important issue to understand dynamic actions of human being and society. Therefore, narrative is also expected to be important for public policies that try to improve dynamic actions of human being and society. In th is study, we review academic genealogies with respect to narratives including western philosophy, hermeneutics, historical science, historical philosophy, literary criticism, clinical psychology and sociology, narrative psychology and folklore. Then we discuss how narrative can be pragmatically applied for public policies.

INVOLVING STUDENTS IN RESEARCH AS A FORM OF INTEGRATION OF ENGINEERING WITH MATHEMATICAL EDUCATION

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Viktor M. Fedoseyev

2016-03-01

Full Text Available Introduction: questions of integration of mathematical with engineering training in educational process of higher education institution are explored. The existing technologies of the integrated training are analyzed, and the project-oriented direction is distinguished. Research involving students as an organisational and methodical form of training bachelors of the technical speciali sations is discussed. Materials and Methods: results of article are based on researches of tendencies of development of technical and mathematical education, works on the theory and methodology of pedagogical integration, methodology of mathematics and technical science. Methods of historical and pedagogical research, analytical, a method of mathematical modeling were used. Results: the main content of the paper is to make discussion of experience in developing and using integrated educational tasks in real educational process. Discussion is based on a specific technological assignment including a number of mathematical tasks used as a subject of research for students. In the assignment a special place is allocated to the questions reflecting the interplay of a technical task with a mathematical method of research highlighting the objective significance of mathematics as a method to solve engineering problems. Discussion and Conclusions: the paper gives reasons to conditions for using research work with students as an organisational and methodical form of integrated training in mathematics. In realisation of educational technology it is logical to apply the method of projects. It is necessary to formulate a task as an engineering project: to set an engineering objective of research, to formulate specifications; to differentiate between engineering and mathematical tasks of the project, to make actual interrelations between them; the mathematical part of the project has to be a body of research; assessment of the project must be carried out not only accounting for

A study of school mathematics curriculum enacted by competent teachers in Singapore secondary schools

Science.gov (United States)

Kaur, Berinderjeet; Tay, Eng Guan; Toh, Tin Lam; Leong, Yew Hoong; Lee, Ngan Hoe

2018-03-01

A study of school mathematics curriculum enacted by competent teachers in Singapore secondary schools is a programmatic research project at the National Institute of Education (NIE) funded by the Ministry of Education (MOE) in Singapore through the Office of Education Research (OER) at NIE. The main goal of the project is to collect a set of data that would be used by two studies to research the enacted secondary school mathematics curriculum. The project aims to examine how competent experienced secondary school teachers implement the designated curriculum prescribed by the MOE in the 2013 revision of curriculum. It does this firstly by examining the video recordings of the classroom instruction and interactions between secondary school mathematics teachers and their students, as it is these interactions that fundamentally determine the nature of the actual mathematics learning and teaching that take place in the classroom. It also examines content through the instructional materials used—their preparation, use in classroom and as homework. The project comprises a video segment and a survey segment. Approximately 630 secondary mathematics teachers and 600 students are participating in the project. The data collection for the video segment of the project is guided by the renowned complementary accounts methodology while the survey segment adopts a self-report questionnaire approach. The findings of the project will serve several purposes. They will provide timely feedback to mathematics specialists in the MOE, inform pre-service and professional development programmes for mathematics teachers at the NIE and contribute towards articulation of "Mathematics pedagogy in Singapore secondary schools" that is evidence based.

Mathematical modelling a case studies approach

CERN Document Server

Illner, Reinhard; McCollum, Samantha; Roode, Thea van

2004-01-01

Mathematical modelling is a subject without boundaries. It is the means by which mathematics becomes useful to virtually any subject. Moreover, modelling has been and continues to be a driving force for the development of mathematics itself. This book explains the process of modelling real situations to obtain mathematical problems that can be analyzed, thus solving the original problem. The presentation is in the form of case studies, which are developed much as they would be in true applications. In many cases, an initial model is created, then modified along the way. Some cases are familiar, such as the evaluation of an annuity. Others are unique, such as the fascinating situation in which an engineer, armed only with a slide rule, had 24 hours to compute whether a valve would hold when a temporary rock plug was removed from a water tunnel. Each chapter ends with a set of exercises and some suggestions for class projects. Some projects are extensive, as with the explorations of the predator-prey model; oth...

The Role of Expository Writing in Mathematical Problem Solving

Science.gov (United States)

Craig, Tracy S.

2016-01-01

Mathematical problem-solving is notoriously difficult to teach in a standard university mathematics classroom. The project on which this article reports aimed to investigate the effect of the writing of explanatory strategies in the context of mathematical problem solving on problem-solving behaviour. This article serves to describe the…

A Phenomenological Research Study of the Experience of Teachers in the Virgin Islands Teacher Enhancement in Mathematics and Science Project

Science.gov (United States)

Thurland, Karen C.

The purpose of conducting this study was to describe the experience of elementary teachers in a mathematics and science staff development project in the U.S. Virgin Islands. The focus of this study was to describe the meaning teachers attribute to their experience in this three year project, in which many of the national mathematics and science reform efforts were implemented. A phenomenological approach was used in order to develop a complete picture of the teachers' experiences. Data collection consisted of interviews with seven elementary teachers. The data were subjective descriptions of the teachers pertaining to the initial summer institute, the follow-up sessions, and the new innovative methods. The transcendental phenomenological model was used. The textural and structural themes included enhanced learning and changes in teaching practice, and interactions with colleagues. From these themes, individual and composite textual descriptions of the experience of the teacher participants were developed. The synthesis of those descriptions illuminated the meanings and essence of their lived experience. The findings indicate that the essence of the experience was the development of a positive attitude towards the teaching of math and science. The teachers gained confidence in their ability to motivate students with the inquiry method and taught more math and science. The implications for the Virgin Islands Department of Education include establishing a partnership with the local university to offer staff development training in mathematics and science and to conduct evaluations of its training efforts.

Model program for the recruitment and preparation of high ability elementary mathematics/science teachers: A collaborative project among scientists, teacher educators and classroom teachers

Energy Technology Data Exchange (ETDEWEB)

1993-12-01

This teacher education program will provide a model for recruiting, educating and retaining high ability students to become mathematics and science lead teachers in elementary schools. The quality experiences and support provided these students will help them develop the knowledge and attitudes necessary to provide leadership for elementary mathematics and science programs. Students will have research experiences at the Ames Laboratory, high quality field experiences with nationally recognized mathematics and science teachers in local schools and opportunities to meaningfully connect these two experiences. This program, collaboratively designed and implemented by scientists, teacher educators and classroom teachers, should provide a replicatable model for other teacher education institutions. In addition, materials developed for the project should help other laboratories interface more effectively with K-8 schools and help other teacher education programs incorporate real science and mathematics experience into their curriculum.

Student perceptions of writing projects in a university differential-equations course

Science.gov (United States)

Latulippe, Christine; Latulippe, Joe

2014-01-01

This qualitative study surveyed 102 differential-equations students in order to investigate how students participating in writing projects in university-level mathematics courses perceive the benefits of writing in the mathematics classroom. Based on previous literature on writing in mathematics, students were asked specifically about the benefits of writing projects as a means to explore practical uses of mathematics, deepen content knowledge, and strengthen communication. Student responses indicated an awareness of these benefits, supporting justifications commonly cited by instructors assigning writing projects. Open-ended survey responses highlighted additional themes which students associated with writing in mathematics, including using software programs and technology, working in groups, and stimulating interest in mathematics. This study provides student feedback to support the use of writing projects in mathematics, as well as student input, which can be utilized to strengthen the impact of writing projects in mathematics.

Crafting by concepts fiber arts and mathematics

CERN Document Server

Belcastro, Sarah-Marie

2016-01-01

From the editors of the popular Making Mathematics with Needlework, this book presents projects that highlight the relationship between types of needlework and mathematics. Chapters start with accessible overviews presenting the interplay between mathematical concepts and craft expressions. Following sections explain the mathematics in more detail, and provide suggestions for classroom activities. Each chapter ends with specific crafting instructions. Types of needlework included are knitting, crochet, needlepoint, cross-stitch, quilting, temari balls, beading, tatting, and string art. Instructions are written as ordinary patterns, so the formatting and language will be familiar to crafters.

Genealogical Analysis of the North-American Spring Wheat Varieties with Different Resistance to Pre-harvest Sprouting

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Martynov Sergey

2016-12-01

Full Text Available A comparative analysis of genetic diversity of North American spring wheat varieties differing in resistance to pre-harvest sprouting was carried out. For identification of sources of resistance the genealogical profiles of 148 red-grained and 63 white-grained North-American spring wheat varieties with full pedigrees were calculated and estimates were made of pre-harvest sprouting. The cluster structure of the populations of red-grained and white-grained varieties was estimated. Analysis of variance revealed significant differences between the average contributions of landraces in the groups of resistant and susceptible varieties. Distribution of the putative sources of resistance in the clusters indicated that varieties having different genetic basis may have different sources of resistance. For red-grained varieties the genetic sources of resistance to pre-harvest sprouting are landraces Crimean, Hard Red Calcutta, and Iumillo, or Button, Kenya 9M-1A-3, and Kenya-U, or Red Egyptian and Kenya BF4-3B-10V1. Tracking of pedigrees showed these landraces contributed to the pedigrees, respectively, via Thatcher, Kenya-Farmer, and Kenya-58, which were likely donors of resistance for red-grained varieties. For white-grained varieties the sources of resistance were landraces Crimean, Hard Red Calcutta, Ostka Galicyjska, Iumillo, Akakomugi, Turco, Hybrid English, Rough Chaff White and Red King, and putative donors of resistance — Thatcher, RL2265, and Frontana. The genealogical profile of accession RL4137, the most important donor of resistance to pre-harvest sprouting in North American spring wheat breeding programmes, contains almost all identified sources of resistance.

Berber genealogy and the politics of prehistoric archaeology and craniology in French Algeria (1860s-1880s).

Science.gov (United States)

Effros, Bonnie

2017-03-01

Following the conquest of Algiers and its surrounding territory by the French army in 1830, officers noted an abundance of standing stones in this region of North Africa. Although they attracted considerably less attention among their cohort than more familiar Roman monuments such as triumphal arches and bridges, these prehistoric remains were similar to formations found in Brittany and other parts of France. The first effort to document these remains occurred in 1863, when Laurent-Charles Féraud, a French army interpreter, recorded thousands of dolmens and stone formations south-west of Constantine. Alleging that these constructions were Gallic, Féraud hypothesized the close affinity of the French, who claimed descent from the ancient Gauls, with the early inhabitants of North Africa. After Féraud's claims met with scepticism among many prehistorians, French scholars argued that these remains were constructed by the ancestors of the Berbers (Kabyles in contemporary parlance), whom they hypothesized had been dominated by a blond race of European origin. Using craniometric statistics of human remains found in the vicinity of the standing stones to propose a genealogy of the Kabyles, French administrators in Algeria thereafter suggested that their mixed origins allowed them to adapt more easily than the Arab population to French colonial governance. This case study at the intersection of prehistoric archaeology, ancient history and craniology exposes how genealogical (and racial) classification made signal contributions to French colonial ideology and policy between the 1860s and 1880s.

Genealogy-based methods for inference of historical recombination and gene flow and their application in Saccharomyces cerevisiae.

Science.gov (United States)

Jenkins, Paul A; Song, Yun S; Brem, Rachel B

2012-01-01

Genetic exchange between isolated populations, or introgression between species, serves as a key source of novel genetic material on which natural selection can act. While detecting historical gene flow from DNA sequence data is of much interest, many existing methods can be limited by requirements for deep population genomic sampling. In this paper, we develop a scalable genealogy-based method to detect candidate signatures of gene flow into a given population when the source of the alleles is unknown. Our method does not require sequenced samples from the source population, provided that the alleles have not reached fixation in the sampled recipient population. The method utilizes recent advances in algorithms for the efficient reconstruction of ancestral recombination graphs, which encode genealogical histories of DNA sequence data at each site, and is capable of detecting the signatures of gene flow whose footprints are of length up to single genes. Further, we employ a theoretical framework based on coalescent theory to test for statistical significance of certain recombination patterns consistent with gene flow from divergent sources. Implementing these methods for application to whole-genome sequences of environmental yeast isolates, we illustrate the power of our approach to highlight loci with unusual recombination histories. By developing innovative theory and methods to analyze signatures of gene flow from population sequence data, our work establishes a foundation for the continued study of introgression and its evolutionary relevance.

Mathematical Skills and Motor Life Skills in Toddlers: Do Differences in Mathematical Skills Reflect Differences in Motor Skills?

Science.gov (United States)

Reikerås, Elin; Moser, Thomas; Tønnessen, Finn Egil

2017-01-01

This study examines possible relations between early mathematical skills and motor life skills in 450 toddlers aged two years and nine months. The study employs baseline data from the longitudinal Stavanger Project--The Learning Child. The children's mathematical skills and motor life skills were assessed by structured observation in the natural…

What is the problem in problem-based learning in higher education mathematics

Science.gov (United States)

Dahl, Bettina

2018-01-01

Problem and Project-Based Learning (PBL) emphasise collaborate work on problems relevant to society and emphases the relation between theory and practice. PBL fits engineering students as preparation for their future professions but what about mathematics? Mathematics is not just applied mathematics, but it is also a body of abstract knowledge where the application in society is not always obvious. Does mathematics, including pure mathematics, fit into a PBL curriculum? This paper argues that it does for two reasons: (1) PBL resembles the working methods of research mathematicians. (2) The concept of society includes the society of researchers to whom theoretical mathematics is relevant. The paper describes two cases of university PBL projects in mathematics; one in pure mathematics and the other in applied mathematics. The paper also discusses that future engineers need to understand the world of mathematics as well as how engineers fit into a process of fundamental-research-turned-into-applied-science.

Modelling as a foundation for academic forming in mathematics education

NARCIS (Netherlands)

Perrenet, J.C.; Morsche, ter H.G.

2004-01-01

The Bachelor curriculum of Applied Mathematics in Eindhoven includes a series of modelling projects where pairs of students solve mathematical problems posed in non-mathematical language. Communication skills training is integrated with this track. Recently a new course has been added. The students

Genealogy Composition in Response to Trauma: Gender and Memory in 1 Chronicles 1–9 and the Documentary Film "My Life Part 2”

NARCIS (Netherlands)

Löwisch, I.S.

2013-01-01

The thesis asks which characteristics of the biblical genealogies turn them into a form of cultural memory that has the potential to make sense of traumatic and fractured pasts, and to integrate them into present conceptions of identity and agency. Specifically, it asks which role gender plays in

Assessment of epidemic projections using recent HIV survey data in South Africa: a validation analysis of ten mathematical models of HIV epidemiology in the antiretroviral therapy era

NARCIS (Netherlands)

Eaton, J.W.; Bacaer, N.; Bershteyn, A.; Cambiano, V.; Cori, A.; Dorrington, R.E.; Fraser, C.; Gopalappa, C.; Hontelez, J.A.; Johnson, L.F.; Klein, D.J.; Phillips, A.N.; Pretorius, C.; Stover, J.; Rehle, T.M.; Hallett, T.B.

2015-01-01

BACKGROUND: Mathematical models are widely used to simulate the effects of interventions to control HIV and to project future epidemiological trends and resource needs. We aimed to validate past model projections against data from a large household survey done in South Africa in 2012. METHODS: We

Explaining the Mathematical Creativity of a Young Boy: An Interdisciplinary Venture between Mathematics Education and Psychoanalysis

Science.gov (United States)

Krummheuer, Götz; Leuzinger-Bohleber, Marianne; Müller-Kirchof, Marion; Münz, Melanie; Vogel, Rose

2013-01-01

First results of the project "Mathematical Creativity of Children at Risk" (MaKreKi) will be presented. The project is conducted in the interdisciplinary research center "Individual Development and Adaptive Education of Children at Risk" (IDeA [http://www.idea-frankfurt.eu; accessed 7 June 2013]). Combining a…

Quasi-spin method in the case of j-j coupling in a shell of equivalent atomic electrons

International Nuclear Information System (INIS)

Savichyus, E.G.; Kanyauskas, Yu.M.; Rudzikas, Z.B.

1979-01-01

Mathematical apparatus of the theory of multielectronic atoms and ions in the case of j-j coupling in a shell of equivalent electrons is built. Quasi-spin method is used. The scheme of the investigation is the following: 1. Tensorial properties of the operators in quasi-spin space are considered. 2. Matrix elements of these operators are built and with the help of Wigner-Eckart theorem the dependence of the matrix elements upon the projection, including the quasi-spin projection, of the quantity of electrons in jj-subshell, is determined. 3. Subgenealogical coefficients (genealogical coefficients presented in quasi-spin space) are determined and some of their properties are investigated. The tables of subgenealogical coefficients for j=5/2, 7/2 are presented

Low and High Achivers in Mathematics

DEFF Research Database (Denmark)

Overgaard, Steffen; Tonnesen, Pia Beck

2016-01-01

achievers - within their first years of schooling think mathematically, as background to initiate more effective teaching of the two groups of students. In autumn 2014, 328 Grade 2 students (born in 2006) received an individual special teaching, early intervention, based on the same model and material, 20...... to enhance the teaching of low and high mathematics achievers so as to increase their mathematical knowledge and confidence.......Every mathematics teacher has a challenge in coping with the gap between low and high achievers in the classroom. The purpose of the the project, Early Math Intervention for Marginalized Students, TMTM 2014, is to bring forth knowledge of how these marginalized students - low as well as high...

A mathematical model of embodied consciousness

NARCIS (Netherlands)

Rudrauf, D.; Bennequin, D.; Granic, I.; Landini, G.; Friston, K.; Williford, K.

2017-01-01

We introduce a mathematical model of embodied consciousness, the Projective Consciousness Model (PCM), which is based on the hypothesis that the spatial field of consciousness (FoC) is structured by a projective geometry and under the control of a process of active inference. The FoC in the PCM

The Great Mathematician Project

Science.gov (United States)

Goldberg, Sabrina R.

2013-01-01

The Great Mathematician Project (GMP) introduces both mathematically sophisticated and struggling students to the history of mathematics. The rationale for the GMP is twofold: first, mathematics is a uniquely people-centered discipline that is used to make sense of the world; and second, students often express curiosity about the history of…

The TIMSS Videotape Classroom Study: Methods and Findings from an Exploratory Research Project on Eighth-Grade Mathematics Instruction in Germany, Japan, and the United States. A Research and Development Report.

Science.gov (United States)

Stigler, James W.; Gonzales, Patrick; Kwanaka, Takako; Knoll, Steffen; Serrano, Ana

This report presents the methods and preliminary findings of the Videotape Classroom Study, a video study of eighth-grade mathematics lessons in Germany, Japan, and the United States. This exploratory research project is part of the Third International Mathematics and Science Study (TIMSS). The study included 231 eighth-grade mathematics…

Mathematics for sustainability

CERN Document Server

Roe, John; Jamshidi, Sara

2018-01-01

Designed for the 21st century classroom, this textbook poses, refines, and analyzes questions of sustainability in a quantitative environment. Building mathematical knowledge in the context of issues relevant to every global citizen today, this text takes an approach that empowers students of all disciplines to understand and reason with quantitative information. Whatever conclusions may be reached on a given topic, this book will prepare the reader to think critically about their own and other people’s arguments and to support them with careful, mathematical reasoning. Topics are grouped in themes of measurement, flow, connectivity, change, risk, and decision-making. Mathematical thinking is at the fore throughout, as students learn to model sustainability on local, regional, and global scales. Exercises emphasize concepts, while projects build and challenge communication skills. With no prerequisites beyond high school algebra, instructors will find this book a rich resource for engaging all majors in the...

Local genealogies in a linear mixed model for genome-wide association mapping in complex pedigreed populations.

Directory of Open Access Journals (Sweden)

Goutam Sahana

Full Text Available INTRODUCTION: The state-of-the-art for dealing with multiple levels of relationship among the samples in genome-wide association studies (GWAS is unified mixed model analysis (MMA. This approach is very flexible, can be applied to both family-based and population-based samples, and can be extended to incorporate other effects in a straightforward and rigorous fashion. Here, we present a complementary approach, called 'GENMIX (genealogy based mixed model' which combines advantages from two powerful GWAS methods: genealogy-based haplotype grouping and MMA. SUBJECTS AND METHODS: We validated GENMIX using genotyping data of Danish Jersey cattle and simulated phenotype and compared to the MMA. We simulated scenarios for three levels of heritability (0.21, 0.34, and 0.64, seven levels of MAF (0.05, 0.10, 0.15, 0.20, 0.25, 0.35, and 0.45 and five levels of QTL effect (0.1, 0.2, 0.5, 0.7 and 1.0 in phenotypic standard deviation unit. Each of these 105 possible combinations (3 h(2 x 7 MAF x 5 effects of scenarios was replicated 25 times. RESULTS: GENMIX provides a better ranking of markers close to the causative locus' location. GENMIX outperformed MMA when the QTL effect was small and the MAF at the QTL was low. In scenarios where MAF was high or the QTL affecting the trait had a large effect both GENMIX and MMA performed similarly. CONCLUSION: In discovery studies, where high-ranking markers are identified and later examined in validation studies, we therefore expect GENMIX to enrich candidates brought to follow-up studies with true positives over false positives more than the MMA would.

Estimating the Distance to the Moon--Its Relevance to Mathematics. Core-Plus Mathematics Project.

Science.gov (United States)

Stern, David P.

This document features an activity for estimating the distance from the earth to the moon during a solar eclipse based on calculations performed by the ancient Greek astronomer Hipparchus. Historical, mathematical, and scientific details about the calculation are provided. Internet resources for teachers to obtain more information on the subject…

Nuclear medicine and mathematics

Energy Technology Data Exchange (ETDEWEB)

Pedroso de Lima, J.J. [Dept. de Biofisica e Proc. de Imagem, IBILI - Faculdade de Medicina, Coimbra (Portugal)

1996-06-01

The purpose of this review is not to present a comprehensive description of all the mathematical tools used in nuclear medicine, but to emphasize the importance of the mathematical method in nuclear medicine and to elucidate some of the mathematical concepts currently used. We can distinguish three different areas in which mathematical support has been offered to nuclear medicine: Physiology, methodology and data processing. Nevertheless, the boundaries between these areas can be indistinct. It is impossible in a single article to give even an idea of the extent and complexity of the procedures currently usede in nuclear medicine, such as image processing, reconstruction from projections and artificial intelligence. These disciplines do not belong to nuclear medicine: They are already branches of engineering, and my interest will reside simply in revealing a little of the elegance and the fantastic potential of these new `allies` of nuclear medicine. In this review the mathematics of physiological interpretation and methodology are considered together in the same section. General aspects of data-processing methods, including image processing and artificial intelligence, are briefly analysed. The mathematical tools that are most often used to assist the interpretation of biological phenomena in nuclear medicine are considered; these include convolution and deconvolution methods, Fourier analysis, factorial analysis and neural networking. (orig.)

Nuclear medicine and mathematics

International Nuclear Information System (INIS)

Pedroso de Lima, J.J.

1996-01-01

The purpose of this review is not to present a comprehensive description of all the mathematical tools used in nuclear medicine, but to emphasize the importance of the mathematical method in nuclear medicine and to elucidate some of the mathematical concepts currently used. We can distinguish three different areas in which mathematical support has been offered to nuclear medicine: Physiology, methodology and data processing. Nevertheless, the boundaries between these areas can be indistinct. It is impossible in a single article to give even an idea of the extent and complexity of the procedures currently usede in nuclear medicine, such as image processing, reconstruction from projections and artificial intelligence. These disciplines do not belong to nuclear medicine: They are already branches of engineering, and my interest will reside simply in revealing a little of the elegance and the fantastic potential of these new 'allies' of nuclear medicine. In this review the mathematics of physiological interpretation and methodology are considered together in the same section. General aspects of data-processing methods, including image processing and artificial intelligence, are briefly analysed. The mathematical tools that are most often used to assist the interpretation of biological phenomena in nuclear medicine are considered; these include convolution and deconvolution methods, Fourier analysis, factorial analysis and neural networking. (orig.)

Clinical-genealogical and cytogenetic peculiarities of children born to fathers-liquidators of the Chernobyl accident

International Nuclear Information System (INIS)

Korenev, N.M.; Kovaleva, V.I.; Bagatskaya, N.V.

2004-01-01

Clinical-genealogical and cytogenetic peculiarities were studied in children, born to fathers who took part in liquidation the Chernobyl nuclear accident consequences for 1999-2002 at the Institute of Children and Adolescents' Health Care of AMS of Ukraine. Dynamic study (from 3 to 3.5 years) of cytogenetic influence in such children showed a certain decrease in chromosomal disorders incidence (from 1.26% to 0.53%, p<0.001). Together with decrease in the chromosomal aberrations incidence in children, it was established an increase in numerical chromosomal disorders (polyploidy). The rate of polyploidy in the group under investigation was up to 2.01% that exceeded the data of the preliminary examination (0.09%, p<0.001)

Research on Mathematical Literacy in Schools--Aim, Approach and Attention

Science.gov (United States)

Haara, Frode Olav; Bolstad, Oda Heidi; Jenssen, Eirik S.

2017-01-01

The development of mathematical literacy in schools is of significant concern at the policy level, and research is an important source of information in this process. This review article focuses on areas of research interest identified in empirical projects on mathematical literacy, and how mathematical literacy in schools is approached by…

Mathematics in computed tomography and related techniques

International Nuclear Information System (INIS)

Sawicka, B.

1992-01-01

The mathematical basis of computed tomography (CT) was formulated in 1917 by Radon. His theorem states that the 2-D function f(x,y) can be determined at all points from a complete set of its line integrals. Modern methods of image reconstruction include three approaches: algebraic reconstruction techniques with simultaneous iterative reconstruction or simultaneous algebraic reconstruction; convolution back projection; and the Fourier transform method. There is no one best approach. Because the experimental data do not strictly satisfy theoretical models, a number of effects have to be taken into account; in particular, the problems of beam geometry, finite beam dimensions and distribution, beam scattering, and the radiation source spectrum. Tomography with truncated data is of interest, employing mathematical approximations to compensate for the unmeasured projection data. Mathematical techniques in image processing and data analysis are also extensively used. 13 refs

Exact penalty results for mathematical programs with vanishing constraints

Czech Academy of Sciences Publication Activity Database

Hoheisel, T.; Kanzow, Ch.; Outrata, Jiří

2010-01-01

Roč. 72, č. 5 (2010), s. 2514-2526 ISSN 0362-546X R&D Projects: GA AV ČR IAA100750802 Institutional research plan: CEZ:AV0Z10750506 Keywords : Mathematical programs with vanishing constraints * Mathematical programs with equilibrium constraints * Exact penalization * Calmness * Subdifferential calculus * Limiting normal cone Subject RIV: BA - General Mathematics Impact factor: 1.279, year: 2010 http://library.utia.cas.cz/separaty/2010/MTR/outrata-exact penalty results for mathematical programs with vanishing constraints.pdf

Teaching Discrete Mathematics Entirely from Primary Historical Sources

Science.gov (United States)

Barnett, Janet Heine; Bezhanishvili, Guram; Lodder, Jerry; Pengelley, David

2016-01-01

We describe teaching an introductory discrete mathematics course entirely from student projects based on primary historical sources. We present case studies of four projects that cover the content of a one-semester course, and mention various other courses that we have taught with primary source projects.

Students Use Graphic Organizers to Improve Mathematical Problem-Solving Communications

Science.gov (United States)

Zollman, Alan

2009-01-01

Improving students' problem-solving abilities is a major, if not the major, goal of middle grades mathematics. To address this goal, the author, who is a university mathematics educator, and nine inner-city middle school teachers developed a math/science action research project. This article describes their unique approach to mathematical problem…

Technology-Enhanced Mathematics Education for Creative Engineering Studies

DEFF Research Database (Denmark)

Triantafyllou, Eva; Timcenko, Olga

2014-01-01

This project explores the opportunities and challenges of integrating digital technologies in mathematics education in creative engineering studies. Students in such studies lack motivation and do not perceive the mathematics the same way as mathematics students do. Digital technologies offer new...... are conceptualized. Then, we are going to apply this field data in designing learning technologies, which will be introduced in university classrooms. The effect of this introduction will be evaluated through educational design experiments....

Euler European Libraries and Electronic Resources in Mathematical Sciences

CERN Document Server

The Euler Project. Karlsruhe

The European Libraries and Electronic Resources (EULER) Project in Mathematical Sciences provides the EulerService site for searching out "mathematical resources such as books, pre-prints, web-pages, abstracts, proceedings, serials, technical reports preprints) and NetLab (for Internet resources), this outstanding engine is capable of simple, full, and refined searches. It also offers a browse option, which responds to entries in the author, keyword, and title fields. Further information about the Project is provided at the EULER homepage.

Balancing Considerations of Equity, Content Quality, and Technical Excellence in Designing, Validating and Implementing Performance Assessments in the Context of Mathematics Instructional Reform: The Experience of the QUASAR Project.

Science.gov (United States)

Silver, Edward A.; Lane, Suzanne

Issues of educational equity and quality are explored in the context of the Quantitative Understanding: Amplifying Student Achievement and Reasoning (QUASAR) project, a national educational reform project aimed at fostering and studying the development and implementation of enhanced mathematics instructional programs for students attending middle…

Molecular Genealogy of a Mongol Queen's Family and Her Possible Kinship with Genghis Khan.

Science.gov (United States)

Lkhagvasuren, Gavaachimed; Shin, Heejin; Lee, Si Eun; Tumen, Dashtseveg; Kim, Jae-Hyun; Kim, Kyung-Yong; Kim, Kijeong; Park, Ae Ja; Lee, Ho Woon; Kim, Mi Jin; Choi, Jaesung; Choi, Jee-Hye; Min, Na Young; Lee, Kwang-Ho

2016-01-01

Members of the Mongol imperial family (designated the Golden family) are buried in a secret necropolis; therefore, none of their burial grounds have been found. In 2004, we first discovered 5 graves belonging to the Golden family in Tavan Tolgoi, Eastern Mongolia. To define the genealogy of the 5 bodies and the kinship among them, SNP and/or STR profiles of mitochondria, autosomes, and Y chromosomes were analyzed. Four of the 5 bodies were determined to carry the mitochondrial DNA haplogroup D4, while the fifth carried haplogroup CZ, indicating that this individual had no kinship with the others. Meanwhile, Y-SNP and Y-STR profiles indicate that the males examined belonged to the R1b-M343 haplogroup. Thus, their East Asian D4 or CZ matrilineal and West Eurasian R1b-M343 patrilineal origins reveal genealogical admixture between Caucasoid and Mongoloid ethnic groups, despite a Mongoloid physical appearance. In addition, Y chromosomal and autosomal STR profiles revealed that the four D4-carrying bodies bore the relationship of either mother and three sons or four full siblings with almost the same probability. Moreover, the geographical distribution of R1b-M343-carrying modern-day individuals demonstrates that descendants of Tavan Tolgoi bodies today live mainly in Western Eurasia, with a high frequency in the territories of the past Mongol khanates. Here, we propose that Genghis Khan and his family carried Y-haplogroup R1b-M343, which is prevalent in West Eurasia, rather than the Y-haplogroup C3c-M48, which is prevalent in Asia and which is widely accepted to be present in the family members of Genghis Khan. Additionally, Tavan Tolgoi bodies may have been the product of marriages between the lineage of Genghis Khan's Borjigin clan and the lineage of either the Ongud or Hongirad clans, indicating that these individuals were members of Genghis Khan's immediate family or his close relatives.

Fundamental remote science research program. Part 2: Status report of the mathematical pattern recognition and image analysis project

Science.gov (United States)

Heydorn, R. P.

1984-01-01

The Mathematical Pattern Recognition and Image Analysis (MPRIA) Project is concerned with basic research problems related to the study of he Earth from remotely sensed measurements of its surface characteristics. The program goal is to better understand how to analyze the digital image that represents the spatial, spectral, and temporal arrangement of these measurements for purposing of making selected inferences about the Earth. This report summarizes the progress that has been made toward this program goal by each of the principal investigators in the MPRIA Program.

La extraña idea del desarrollo. Genealogía de un concepto

Directory of Open Access Journals (Sweden)

Carlos Eduardo Maldonado

2017-01-01

Full Text Available Este artículo elabora una genealogía del concepto de desarrollo. Formulado originalmente por R. Prebisch (1950, el con- cepto sufre varias traducciones, extensiones y modi caciones que terminan asimilándolo a una idea perfectamente distinta. El sentido y el contexto originarios terminan transformándose. Así, el desarrollo termina siendo una apología del capitalismo. Después de una introducción histórica y cientí ca, el artículo desarrolla cuatro argumentos, así: el modelo de desarrollo es una idea extraña; esta idea se ve ampliada y extendida en términos de sostenibilidad; varias críticas, sin embargo, emergen y se ha- cen necesarias; consiguientemente, se hace posible e imperativo un modelo alternativo al desarrollo. Cada una de las secciones mencionadas son justi cadas en cada paso. Al nal se extraen algunas conclusiones, y el artículo termina con una idea fuerte que vincula bancarización y control ciudadano. Palabras clave: Historia de la economía, filosofía de la economía, capitalismo, economía política Abstract This paper carries out a genealogy of the concept of development. Originally stated out by R. Prebisch (1950, the concept su ers a number of translations, extension, and changes that end up with a quite di erent idea than it was originally thought. Both the meaning and framework end up being radically changed. us, development ends as an apology to capitalism. A er a short historical and philosophical introduction, this paper develops four arguments, as follows: the model of economic de- velopment is a weird idea; such an idea is both extended and widened in terms of sustainability; a number of critiques merge, though, that are necessary and feasible; therea er, an alternative model of development becomes at the same time possible and compulsory. Each one of the mentioned paragraphs are justi ed in due time. At the end some conclusions are drawn, ad the paper ends with a string idea that

Enhancing Science and Mathematics Education for Child Care Providers and Preschool Teachers.

Science.gov (United States)

White, Jennifer Meux; Hosoume, Kimi

The Lawrence Hall of Science (LHS), University of California at Berkeley has completed a 3-year project to develop a science and mathematics education course and science curriculum for early childhood educators. This project was in response to the need for improving the science and mathematics knowledge and teaching skills of adults who work with…

Mathematical Biology Modules Based on Modern Molecular Biology and Modern Discrete Mathematics

Science.gov (United States)

Robeva, Raina; Davies, Robin; Hodge, Terrell; Enyedi, Alexander

2010-01-01

We describe an ongoing collaborative curriculum materials development project between Sweet Briar College and Western Michigan University, with support from the National Science Foundation. We present a collection of modules under development that can be used in existing mathematics and biology courses, and we address a critical national need to…

How to Introduce Mathematic Modeling in Industrial Design Education

NARCIS (Netherlands)

Langereis, G.R.; Hu, J.; Feijs, L.M.G.; Stillmann, G.A.; Kaiser, G.; Blum, W.B.; Brown, J.P.

2013-01-01

With competency based learning in a project driven environment, we are facing a different perspective of how students perceive mathematical modelling. In this chapter, a model is proposed where conventional education is seen as a process from mathematics to design, while competency driven approaches

Mathematics in Student-­Centred Inquiry Learning: Student Engagement

Science.gov (United States)

Calder, Nigel

2013-01-01

This paper examines how mathematical understandings might be facilitated through student-centred inquiry. Data is drawn from a research project on student-centred inquiry learning that situated mathematics within authentic problem-solving contexts and involved students in a collaboratively constructed curriculum. A contemporary interpretive frame…

HACIA UNA GENEALOGÍA DE LA EDUCACIÓN Y LA PEDAGOGÍA | TOWARDS A GENEALOGY OF EDUCATION AND PEDAGOGY

Directory of Open Access Journals (Sweden)

Héctor Rodríguez García

2016-11-01

Full Text Available This inquiry is a theoretical approach to various epistemological constructions which are in the historical development of Education and Pedagogy. It is the incursion in a variety of cultural places to decipher the epochal and discursive signs that account for different positions that show various training programs and conceptions of humanity. This is why the genealogical trip to the scene of invention of Paideia in Ancient Greece is considered essential. Especially because it is an opportunity to find the enunciations of sophistry, maieutics and dialectics. This itinerary also includes the opening of the educational ideas of the European Enlightenment. It is an emerging time marked by great social transformations that have an important influence on the processes of Revolution of Independence and political and educational ideals that were born from Latin America. Thus, from a documentary view, unfolds a methodological approach based on critical hermeneutics that enables to understand the currents of ideas in this part of the continent that give rise to intellectual liberation. In this regard, it is underlined that genealogy as an epistemological strategy gives the opportunity to discover the diatribes and controversies that arise in historical events. That is why it is convenient to include in the conclusions the need to assume the historicity of pedagogical knowledge, the epochal and discursive changes, the rotation of globalization and the irreverent gesture that feeds the utopia and the liberating Latin American pedagogical thinking.

Math Autobiographies: A Window into Teachers' Identities as Mathematics Learners

Science.gov (United States)

McCulloch, Allison W.; Marshall, Patricia L.; DeCuir-Gunby, Jessica T.; Caldwell, Ticola S.

2013-01-01

Mathematics autobiographies have the potential to help teachers reflect on their identities as mathematics learners and to understand their role in the development of their students' mathematics identities. This paper reports on a professional development project for K-2 teachers (n = 41), in which participants were asked to write mathematics…

Science, Engineering, and Mathematics (SEM) at the Timbuktu Academy

Science.gov (United States)

2005-07-31

Science (AAAS) and the first Standards of the National Council of Teachers o f Mathematics ( NCTM ) both appeared in 1989 . They were followed by Scope...National Council of Teachers of Mathematics ( NCTM , 1989, 1991 , and 1995), Science for All Americans (Project 2061) and the Benchmarks of the America n...Documents, Mail Stop SSOP, Washington, DC, 20402-9328 . National Council of Teachers of Mathematics ( NCTM ) . Curriculum and Evaluation Standard s for School

Moving beyond the Barriers: Supporting Meaningful Teacher Collaboration to Improve Secondary School Mathematics

Science.gov (United States)

Jao, Limin; McDougall, Doug

2016-01-01

The Collaborative Teacher Inquiry Project was a professional development initiative that sought to improve the teaching and learning of Grade 9 Applied mathematics by encouraging teachers to work collaboratively. The project brought together Grade 9 Applied mathematics teachers from 11 schools across four neighboring public school boards in the…

Elementary school students’ mathematical intelligence based on mathematics learning using classical music of the baroque era as the backsound

Directory of Open Access Journals (Sweden)

Karlimah

2018-01-01

Full Text Available Many studies suggest that classical music can inccrease the listeners’ intelligence, including mathematical intelligence [3, 12, 2, 11]. In this research, we used the classical music of Baroque era as the backsound during math learning. The research method used was quasi experiment with nonequivalent pretest-posttest control group design to grade V SD students in Tasikmalaya city. The results show that the use of classical music of Baroque era during the learning of mathematics gave a high contribution to the mathematical intelligence of fifth grade elementary school students. The student's mathematical intelligence can be seen in the cognitive abilities which were at the high level in the knowledge up to analysis, and at the low level in the synthesis and evaluation. Low mathematical intelligence was shown by students in calculating amount and difference of time, and projecting word problem into the form of mathematical problems. High mathematical intelligence arose in reading and writing integers in words and numbers. Thus, the mathematical intelligence of fifth grade Elementary School students will be better if classical music of Baroque era is used as the backsound in mathematics learning about solving math problems.

Tools of the trade introduction to advanced mathematics

CERN Document Server

Sally, Jr, Paul J

2008-01-01

This book provides a transition from the formula-full aspects of the beginning study of college level mathematics to the rich and creative world of more advanced topics. It is designed to assist the student in mastering the techniques of analysis and proof that are required to do mathematics. Along with the standard material such as linear algebra, construction of the real numbers via Cauchy sequences, metric spaces and complete metric spaces, there are three projects at the end of each chapter that form an integral part of the text. These projects include a detailed discussion of topics such

Self-Perceptions of Pre-Service Mathematics Teachers Completing a Graduate Diploma of Secondary Education

Science.gov (United States)

Hine, Gregory S. C.

2015-01-01

This qualitative research project explored the self-perceptions of pre-service secondary mathematics teachers completing a Graduate Diploma of Secondary Education. Specifically, the researcher investigated the extent to which teachers perceived their readiness to commence a secondary mathematics teaching position. The project relied principally on…

A mathematical model for the third-body concept

Czech Academy of Sciences Publication Activity Database

Krejčí, Pavel; Petrov, A.

2018-01-01

Roč. 23, č. 3 (2018), s. 420-432 ISSN 1081-2865 R&D Projects: GA ČR(CZ) GA15-12227S Institutional support: RVO:67985840 Keywords : third-body * hysteresis operators * variational inequality Subject RIV: BA - General Mathematics OBOR OECD: Applied mathematics Impact factor: 2.953, year: 2016 http://journals.sagepub.com/doi/abs/10.1177/1081286517732827

Flipping Undergraduate Finite Mathematics: Findings and Implications

Science.gov (United States)

Guerrero, Shannon; Beal, Melissa; Lamb, Chris; Sonderegger, Derek; Baumgartel, Drew

2015-01-01

This paper reports on a research project that investigated the effects of a flipped instructional approach on student attitudes and achievement in a lower division university-level Finite Mathematics course. The project employed a mixed-methods design that included content exams, an attitude survey, open-ended student responses, observations, and…

Molecular Genealogy of a Mongol Queen’s Family and Her Possible Kinship with Genghis Khan

Science.gov (United States)

Lkhagvasuren, Gavaachimed; Shin, Heejin; Lee, Si Eun; Tumen, Dashtseveg; Kim, Jae-Hyun; Kim, Kyung-Yong; Kim, Kijeong; Park, Ae Ja; Lee, Ho Woon; Kim, Mi Jin; Choi, Jaesung; Choi, Jee-Hye; Min, Na Young

2016-01-01

Members of the Mongol imperial family (designated the Golden family) are buried in a secret necropolis; therefore, none of their burial grounds have been found. In 2004, we first discovered 5 graves belonging to the Golden family in Tavan Tolgoi, Eastern Mongolia. To define the genealogy of the 5 bodies and the kinship among them, SNP and/or STR profiles of mitochondria, autosomes, and Y chromosomes were analyzed. Four of the 5 bodies were determined to carry the mitochondrial DNA haplogroup D4, while the fifth carried haplogroup CZ, indicating that this individual had no kinship with the others. Meanwhile, Y-SNP and Y-STR profiles indicate that the males examined belonged to the R1b-M343 haplogroup. Thus, their East Asian D4 or CZ matrilineal and West Eurasian R1b-M343 patrilineal origins reveal genealogical admixture between Caucasoid and Mongoloid ethnic groups, despite a Mongoloid physical appearance. In addition, Y chromosomal and autosomal STR profiles revealed that the four D4-carrying bodies bore the relationship of either mother and three sons or four full siblings with almost the same probability. Moreover, the geographical distribution of R1b-M343-carrying modern-day individuals demonstrates that descendants of Tavan Tolgoi bodies today live mainly in Western Eurasia, with a high frequency in the territories of the past Mongol khanates. Here, we propose that Genghis Khan and his family carried Y-haplogroup R1b-M343, which is prevalent in West Eurasia, rather than the Y-haplogroup C3c-M48, which is prevalent in Asia and which is widely accepted to be present in the family members of Genghis Khan. Additionally, Tavan Tolgoi bodies may have been the product of marriages between the lineage of Genghis Khan’s Borjigin clan and the lineage of either the Ongud or Hongirad clans, indicating that these individuals were members of Genghis Khan’s immediate family or his close relatives. PMID:27627454

"Lettuce" Learn Math: Teaching Mathematics with Seeds and Centimeters

Science.gov (United States)

Rickard, Laura N.; Wilson, Colette

2006-01-01

"Lettuce Learn Math" is an interdisciplinary program that has effectively linked a small-scale agricultural production system to a sixth-grade mathematics and science curriculum. The mathematical concepts and skills, including measurement and geometry, taught in this project met and often exceeded the standards set by New York state for…

Project CHAMP, 1985-1986. OEA Evaluation Report.

Science.gov (United States)

New York City Board of Education, Brooklyn. Office of Educational Assessment.

The Chinese Achievement and Mastery program, Project CHAMP, was a bilingual (Chinese/English) project offered at three high schools in Manhattan. The major goals were to enable Chinese students of limited English proficiency (LEP) to learn English and to master content in mathematics, science, global history, computer mathematics, and native…

Using Mathematics, Mathematical Applications, Mathematical Modelling, and Mathematical Literacy: A Theoretical Study

Science.gov (United States)

Mumcu, Hayal Yavuz

2016-01-01

The purpose of this theoretical study is to explore the relationships between the concepts of using mathematics in the daily life, mathematical applications, mathematical modelling, and mathematical literacy. As these concepts are generally taken as independent concepts in the related literature, they are confused with each other and it becomes…

Students’ mathematical learning in modelling activities

DEFF Research Database (Denmark)

Kjeldsen, Tinne Hoff; Blomhøj, Morten

2013-01-01

Ten years of experience with analyses of students’ learning in a modelling course for first year university students, led us to see modelling as a didactical activity with the dual goal of developing students’ modelling competency and enhancing their conceptual learning of mathematical concepts i...... create and help overcome hidden cognitive conflicts in students’ understanding; that reflections within modelling can play an important role for the students’ learning of mathematics. These findings are illustrated with a modelling project concerning the world population....

Mathematical Footprints Discovering Mathematics Everywhere

CERN Document Server

Pappas, Theoni

1999-01-01

MATHEMATICAL FOOTPRINTS takes a creative look at the role mathematics has played since prehistoric times, and will play in the future, and uncovers mathematics where you least expect to find it from its many uses in medicine, the sciences, and its appearance in art to its patterns in nature and its central role in the development of computers. Pappas presents mathematical ideas in a readable non-threatening manner. MATHEMATICAL FOOTPRINTS is another gem by the creator of THE MATHEMATICS CALENDAR and author of THE JOY OF MATHEMATICS. "Pappas's books have been gold mines of mathematical ent

What Is the Problem in Problem-Based Learning in Higher Education Mathematics

Science.gov (United States)

Dahl, Bettina

2018-01-01

Problem and Project-Based Learning (PBL) emphasise collaborate work on problems relevant to society and emphases the relation between theory and practice. PBL fits engineering students as preparation for their future professions but what about mathematics? Mathematics is not just applied mathematics, but it is also a body of abstract knowledge…

Periodificación en arqueología peruana: genealogía y aporía

Directory of Open Access Journals (Sweden)

2005-01-01

Full Text Available Périodisation en archéologie péruvienne : généalogie et aporie Résumé: La périodisation est un point stratégique d’intersection entre la théorie et la recherche empirique. Son histoire au Pérou résume bien les débats expérimentés par l’archéologie péruvienne. La variété des périodisations postulées et pratiquées dans les Andes l’a transformée en un champ d’étude privilégié. Une fois assumée la réciprocit nécessaire entre le développement d’une discipline et la connaissance de son histoire, l’auteur se livre à cette enquête sur les principaux systèmes de periodisation, les affrontements entre les tendances et le panorama actuel. Ce n’est pas un travail théorique, mais plutôt historiographique sur un aspect spécifique de l’archeologie péruvienne. L’objectif est de faire une généalogie critique et fonctionnelle, c’est-à-dire présenter la genèse des schémas conceptuels utilisés aujourd’hui, leurs liens et leurs limites. La periodificación es un estratégico punto de intersección entre la propuesta teórica y la investigación empírica. Su historia resume bien los debates por los que ha atravesado la arqueología peruana. La variedad de periodificaciones postuladas y/o practicadas en el área central andina, las convierte en un privilegiado campo de estudio. Asumida la necesaria reciprocidad entre el avance de toda disciplina y el conocimiento de su historia, se plantea este recorrido por los principales sistemas de periodificación, los enfrentamientos entre tendencias y el panorama actual. No se trata de un enfoque teórico, antes bien historiográfico de un aspecto específico de la arqueología peruana. El objetivo es hacer una genealogía crítica y funcional, es decir presentar la génesis de los esquemas conceptuales actualmente utilizados, sus conexiones y límites. Periodization in Peruvian archaeology: genealogy and apory Abstract: Periodization is a strategic point of intersection

Robotic Toys as a Catalyst for Mathematical Problem Solving

Science.gov (United States)

Highfield, Kate

2010-01-01

Robotic toys present unique opportunities for teachers of young children to integrate mathematics learning with engaging problem-solving tasks. This article describes a series of tasks using Bee-bots and Pro-bots, developed as part a larger project examining young children's use of robotic toys as tools in developing mathematical and metacognitive…

Multi-Role Project (MRP): A New Project-Based Learning Method for STEM

Science.gov (United States)

Warin, Bruno; Talbi, Omar; Kolski, Christophe; Hoogstoel, Frédéric

2016-01-01

This paper presents the "Multi-Role Project" method (MRP), a broadly applicable project-based learning method, and describes its implementation and evaluation in the context of a Science, Technology, Engineering, and Mathematics (STEM) course. The MRP method is designed around a meta-principle that considers the project learning activity…

From the University to the Classroom: Prospective Elementary Mathematics Specialists' Pedagogical Shifts

Science.gov (United States)

Myers, Kayla D.; Swars, Susan L.; Smith, Stephanie Z.

2016-01-01

This project focuses on the development of prospective Elementary Mathematics Specialists (EMSs) in a K-5 Mathematics Endorsement Program. Program courses emphasized elementary mathematics content and pedagogy while providing opportunities for participants to evidence their learning through classroom teaching practice, all in an attempt to…

Molecular and genealogical evidence for a founder effect in Fanconi anemia families of the Afrikaner population of South Africa

Science.gov (United States)

Tipping, A. J.; Pearson, T.; Morgan, N. V.; Gibson, R. A.; Kuyt, L. P.; Havenga, C.; Gluckman, E.; Joenje, H.; de Ravel, T.; Jansen, S.; Mathew, C. G.

2001-01-01

Fanconi anemia (FA) is a rare, genetically heterogeneous autosomal recessive disorder associated with progressive aplastic anemia, congenital abnormalities, and cancer. FA has a very high incidence in the Afrikaner population of South Africa, possibly due to a founder effect. Previously we observed allelic association between polymorphic markers flanking the FA group A gene (FANCA) and disease chromosomes in Afrikaners. We genotyped 26 FA families with microsatellite and single nucleotide polymorphic markers and detected five FANCA haplotypes. Mutation scanning of the FANCA gene revealed association of these haplotypes with four different mutations. The most common was an intragenic deletion of exons 12–31, accounting for 60% of FA chromosomes in 46 unrelated Afrikaner FA patients, while two other mutations accounted for an additional 20%. Screening for these mutations in the European populations ancestral to the Afrikaners detected one patient from the Western Ruhr region of Germany who was heterozygous for the major deletion. The mutation was associated with the same unique FANCA haplotype as in Afrikaner patients. Genealogical investigation of 12 Afrikaner families with FA revealed that all were descended from a French Huguenot couple who arrived at the Cape on June 5, 1688, whereas mutation analysis showed that the carriers of the major mutation were descendants of this same couple. The molecular and genealogical evidence is consistent with transmission of the major mutation to Western Germany and the Cape near the end of the 17th century, confirming the existence of a founder effect for FA in South Africa. PMID:11344308

Inverse truss design as a conic mathematical program with equilibrium constraints

Czech Academy of Sciences Publication Activity Database

Kočvara, Michal; Outrata, Jiří

2017-01-01

Roč. 10, č. 6 (2017), s. 1329-1350 ISSN 1937-1632 R&D Projects: GA ČR GA15-00735S Institutional support: RVO:67985556 Keywords : conic optimization * truss topology optimization * mathematical programs with equilibrium constraints Subject RIV: BA - General Mathematics OBOR OECD: Applied mathematics Impact factor: 0.781, year: 2016 http://library.utia.cas.cz/separaty/2017/MTR/kocvara-0477818.pdf

Students' Perceptions of the Relevance of Mathematics in Engineering

Science.gov (United States)

Flegg, Jennifer; Mallet, Dann; Lupton, Mandy

2012-01-01

In this article, we report on the findings of an exploratory study into the experience of students as they learn first year engineering mathematics. Here we define engineering as the application of mathematics and sciences to the building and design of projects for the use of society [M. Kirschenman and B. Brenner, "Education for Civil…

How Ending Impunity for Conflict-Related Sexual Violence Overwhelmed the UN Women, Peace, and Security Agenda: A Discursive Genealogy.

Science.gov (United States)

Reilly, Niamh

2018-05-01

The recent unprecedented focus on ending impunity for conflict-related sexual violence (CRSV) is positive in many respects. However, it has narrowed the scope of Security Council Resolution 1325 and the women, peace, and security (WPS) agenda it established in 2000. Through a critical discursive genealogy of the interrelation of two UN agendas-protection of civilians in armed conflict and women, peace, and security-the author traces how CRSV emerged as the defining issue of the latter while the transformative imperative of making women's participation central to every UN endeavor for peace and security has failed to gain traction.

Trends in contemporary mathematics

CERN Document Server

Strickland, Elisabetta

2014-01-01

This book covers a wide spectrum of hot topics and current trends in mathematics, including noncommutative algebra via deformation theory,  optimal transportation, nonlinear potential theory, kinetic theory and gas dynamics, geometric numerical integration, finite simple groups of small essential dimension, optimal control problems, extended Dynkin diagrams, spin glasses, aspherical closed manifolds, Boltzmann systems, birational geometry of projective varieties and directed graphs, nonlinear diffusion, geometric constructions of extremal metrics on complex manifolds, and Pell’s equation in polynomials. The book comprises a selection of contributions by leading international mathematicians who were speakers at the "INdAM Day", an initiative dating back to 2004 at which the most recent developments in contemporary mathematics are presented.

Projects for calculus the language of change

CERN Document Server

Stroyan, Keith D

1999-01-01

Projects for Calculus is designed to add depth and meaning to any calculus course. The fifty-two projects presented in this text offer the opportunity to expand the use and understanding of mathematics. The wide range of topics will appeal to both instructors and students. Shorter, less demanding projects can be managed by the independent learner, while more involved, in-depth projects may be used for group learning. Each task draws on special mathematical topics and applications from subjects including medicine, engineering, economics, ecology, physics, and biology.Subjects including:* Medicine* Engineering* Economics* Ecology* Physics* Biology

Enhancing Mathematical Communication for Virtual Math Teams

Directory of Open Access Journals (Sweden)

Gerry Stahl

2010-06-01

Full Text Available The Math Forum is an online resource center for pre-algebra, algebra, geometry and pre-calculus. Its Virtual Math Teams (VMT service provides an integrated web-based environment for small teams of people to discuss math and to work collaboratively on math problems or explore interesting mathematical micro-worlds together. The VMT Project studies the online math discourse that takes place during sessions of virtual math teams working on open-ended problem-solving tasks. In particular, it investigates methods of group cognition that are employed by teams in this setting. The VMT environment currently integrates social networking, synchronous text chat, a shared whiteboard for drawing, web browsers and an asynchronous wiki for exchanging findings within the larger community. A simple version of MathML is supported in the whiteboard, chat and wiki for displaying mathematical expressions. The VMT Project is currently integrating the dynamic mathematics application, GeoGebra, into its collaboration environment. This will create a multi-user version of GeoGebra, which can be used in concert with the chat, web browsers, curricular topics and wiki repository.

DNA: The Strand that Connects Us All

Energy Technology Data Exchange (ETDEWEB)

Kaplan, Matt [Univ. of Arizona, Tucson, AZ (United States). Genetics Core Facility

2011-03-29

Learn how the methods and discoveries of human population genetics are applied for personal genealogical reconstruction and anthropological testing. Dr. Kaplan starts with a short general review of human genetics and the biology behind this form of DNA testing. He looks at how DNA testing is performed and how samples are processed in the University of Arizona laboratory. He also examines examples of personal genealogical results from Family Tree DNA and personal anthropological results from the Genographic Project. Finally, he describes the newest project in the UA laboratory, the DNA Shoah Project.

Mathematics Practicum at St. Olaf College: Project-Based Learning through Academic Civic Engagement

Science.gov (United States)

Sanft, Rebecca; Ziegler-Graham, Kathryn

2018-01-01

The Mathematics Practicum has been offered at St. Olaf College for over 30 years. The Practicum is a 4-week, January Interim course where three teams of five students work on consulting problems solicited from area businesses, government agencies, and non-profit organizations. These problems have significant mathematical, statistical, and…

Space Mathematics: A Resource for Secondary School Teachers

Science.gov (United States)

Kastner, Bernice

1985-01-01

A collection of mathematical problems related to NASA space science projects is presented. In developing the examples and problems, attention was given to preserving the authenticity and significance of the original setting while keeping the level of mathematics within the secondary school curriculum. Computation and measurement, algebra, geometry, probability and statistics, exponential and logarithmic functions, trigonometry, matrix algebra, conic sections, and calculus are among the areas addressed.

Active Learning to Improve Fifth Grade Mathematics Achievement in Banten

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Andri Suherman

2011-12-01

Full Text Available Teaching for active learning is a pedagogical technique that has been actively promoted in Indonesian education through government reform efforts and international development assistance projects for decades. Recently, elementary schools in Banten province received training in active learning instructional strategies from the USAID-funded project, Decentralized Basic Education 2. Post-training evaluations conducted by lecturers from the University of Sultan Ageng Tirtayasa (UNTIRTA: Universitas Sultan Ageng Tirtayasa suggested that teachers were successfully employing active learning strategies in some subjects, but not mathematics. In order to understand the difficulties teachers were having in teaching for active learning in mathematics, and to assist them in using active learning strategies, a team of lecturers from UNTIRTA designed and carried out an action research project to train teachers in an elementary school in the city of Cilegon to use a technique called Magic Fingers in teaching Grade 5 multiplication. During the course of the project the research team discovered that teachers were having problems transferring knowledge gained from training in one context and subject to other school subjects and contexts. Key Words: Mathematics, Teaching for Active Learning, Indonesia, Banten

Mathematics education and the dignity of being

Directory of Open Access Journals (Sweden)

Paola Valero

2012-11-01

Full Text Available On the grounds of our work as researchers, teacher educators and teachers engaging with a socio-political approach in mathematics education in Colombia, we propose to understand democracy in terms of the possibility of constructing a social subjectivity for the dignity of being. We address the dilemma of how the historical insertion of school mathematics in relation to the Colonial project of assimilation of Latin American indigenous peoples into the episteme of the Enlightenment and Modernity is in conflict with the possibility of the promotion of a social subjectivity in mathematics classrooms. We illustrate a pedagogical possibility to move towards a mathematics education for social subjectivity with our work in reassembling the notion of geometrical space in the Colombian secondary school mathematics curriculum with notions of space from critical geography and the problem of territorialisation, and Latin American epistemology with the notion of intimate space as an important element of social subjectivity.

Piloting a Web-Based Homework System in Developmental Mathematics Classrooms

Science.gov (United States)

Dass, Wendi E.

2012-01-01

This Capstone project studied a pilot of the web-based homework system "Hawkes" in developmental mathematics classes at a mid-sized community college. The purpose of the study was to investigate how three instructors of developmental mathematics courses incorporated "Hawkes" in their classes, what obstacles they encountered,…

Examining Thai high school students' developing STEM projects

Science.gov (United States)

Teenoi, Kultida; Siripun, Kulpatsorn; Yuenyong, Chokchai

2018-01-01

Like others, Thailand education strongly focused on STEM education. This paper aimed to examine existing Thai high school students' integrated knowledge about science, technology, engineering, and mathematics (STEM) in their developing science project. The participants included 49 high school students were studying the subject of individual study (IS) in Khon Kaen wittayayon school, Khon Kaen, Thailand. The IS was provided to gradually enhance students to know how to do science project starting from getting start to do science projects, They enrolled to study the individual study of science project for three year in roll. Methodology was qualitative research. Views of students' integrated knowledge about STEM were interpreted through participant observation, interview, and students' science projects. The first author as participant observation has taught this group of students for 3 years. It found that 16 science projects were developed. Views of students' integrated knowledge about STEM could be categorized into three categories. These included (1) completely indicated integration of knowledge about science, technology, engineering, and mathematics, (2) partial indicated integration of knowledge about science, technology, engineering, and mathematics, and (3) no integration. The findings revealed that majority of science projects could be categorized as completely indicated integration of knowledge about science, technology, engineering, and mathematics. The paper suggested some ideas of enhancing students to applying STEM for developing science projects.

The DREME Network: Research and Interventions in Early Childhood Mathematics.

Science.gov (United States)

Day-Hess, Crystal; Clements, Douglas H

2017-01-01

The DREME Network was created to advance the field of early mathematics research and improves the opportunities to develop math competencies offered to children birth through age 8 years, with an emphasis on the preschool years. All four main Network projects will have implications for interventions. Section 1 introduces the Network and its four projects. The remainder of the chapter focuses on one of these four projects, Making More of Math (MMM), in depth. MMM is directly developing an intervention for children, based on selecting high-quality instructional activities culled from the burgeoning curriculum resources. We first report a review of 457 activities from 6 research-based curricula, which describes the number of activities by content focus, type (nature), and setting of each activity. Given the interest in higher-order thinking skills and self-regulation, we then identified activities that had the potential to, develop both mathematics and executive function (EF) proficiencies. We rated these, selecting the top 10 for extensive coding by mathematics content and EF processes addressed. We find a wide divergence across curricula in all these categories and provide comprehensive reports for those interested in selecting, using, or developing early mathematics curricula. © 2017 Elsevier Inc. All rights reserved.

High School Mathematics Curriculum Development Integrated with Character Education Within Project Assessment as Spiral System Leveled

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Siti Badriatul Munawaroh

2017-08-01

Full Text Available The purpose of this research are: (1 description of characteristics and (2 validate thesenior hight school of mathematics syllabus integrated character education with the project assessment, (3 test the effectiveness of the learning material of function in class X. Testing procedure of syllabus and learning used research development of Borg & Gall (1987. The data were processed with descriptive analysis, statistical test t test and regression. The results obtained by the integration of the 10 characters on the senior hight school of mathematics syllabus show a valid syllabus by experts with an average score of 4 (both categories, the maximum score of 5. Test implementation on learning reach effective: (1 the percentage of learners achieve mastery learning by 89, 5%; (2 an increase of characters curiosity of learners of meeting 1 to 2, up to 3, up to 4 each score gain of 0.17; 0.30; 0.31; (3 the influence of the curiosity of students to the learning outcomes of 48.9%, (4 the average learning outcomes of students experimental class (77.2 is better than the control class (76.2. Thus, each character can bring a change in behavior according to the character programmed and observed in the learning process in focus. Coordination learning at every level stated in the syllabus.

Using mathematics to solve real world problems: the role of enablers

DEFF Research Database (Denmark)

Niss, Mogens Allan; Geiger, Vincent; Stillman, Gloria

2018-01-01

The purpose of this article is to report on a newly funded research project in which we will investigate how secondary students apply mathematical modelling to effectively address real world situations. Through this study, we will identify factors, mathematical, cognitive, social and environmenta...

Probability theory and mathematical statistics for engineers

CERN Document Server

Pugachev, V S

1984-01-01

Probability Theory and Mathematical Statistics for Engineers focuses on the concepts of probability theory and mathematical statistics for finite-dimensional random variables.The publication first underscores the probabilities of events, random variables, and numerical characteristics of random variables. Discussions focus on canonical expansions of random vectors, second-order moments of random vectors, generalization of the density concept, entropy of a distribution, direct evaluation of probabilities, and conditional probabilities. The text then examines projections of random vector

Students' perceptions of the relevance of mathematics in engineering

Science.gov (United States)

Flegg, Jennifer; Mallet, Dann; Lupton, Mandy

2012-09-01

In this article, we report on the findings of an exploratory study into the experience of students as they learn first year engineering mathematics. Here we define engineering as the application of mathematics and sciences to the building and design of projects for the use of society [M. Kirschenman and B. Brenner, Education for Civil Engineering: A Profession of Practice, Leader. Manag. Eng. 10 (2010), p. 54]. Qualitative and quantitative data on students' views of the relevance of their mathematics study to their engineering studies and future careers in engineering was collected. The students described using a range of mathematics techniques (mathematics skills developed, mathematics concepts applied to engineering and skills developed relevant for engineering) for various usages (as a subject of study, a tool for other subjects or a tool for real world problems). We found a number of themes relating to the design of engineering mathematics curriculum emerged from the data. These included the relevance of mathematics within different engineering majors, the relevance of mathematics to future studies, the relevance of learning mathematical rigour and the effectiveness of problem-solving tasks in conveying the relevance of mathematics more effectively than other forms of assessment. We make recommendations for the design of engineering mathematics curriculum based on our findings.

Description of the supporting factors of final project in Mathematics and Natural Sciences Faculty of Syiah Kuala University with multiple correspondence analysis

Science.gov (United States)

Rusyana, Asep; Nurhasanah; Maulizasari

2018-05-01

Syiah Kuala University (Unsyiah) is hoped to have graduates who are qualified for working or creating a field of work. A final project course implementation process must be effective. This research uses data from the evaluation conducted by Mathematics and Natural Sciences Faculty (FMIPA) of Unsyiah. Some of the factors that support the completion of the final project are duration, guidance, the final project seminars, facility, public impact, and quality. This research aims to know the factors that have a relationship with the completion of the final project and identify similarities among variables. The factors that support the completion of the final project at every study program in FMIPA are (1) duration, (2) guidance and (3) facilities. These factors are examined for the correlations by chi-square test. After that, the variables are analyzed with multiple correspondence analysis. Based on the plot of correspondence, the activities of the guidance and facilities in Informatics Study Program are included in the fair category, while the guidance and facilities in the Chemistry are included in the best category. Besides that, students in Physics can finish the final project with the fastest completion duration, while students in Pharmacy finish for the longest time.

Context-based mathematics tasks in Indonesia : Toward better practice and achievement

OpenAIRE

Wijaya, A.

2015-01-01

The Indonesian national curriculum mandates that mathematics education must be relevant to the needs of life and should offer students opportunities to develop the ability to apply their knowledge in society. Furthermore, there are educational movements in Indonesia that promote the application of mathematics and place a premium on using context-based tasks; see the projects Pendidikan MatematikaRealistik Indonesia (Indonesian Realistic Mathematics Education) and Pembelajaran Kontekstual (Con...

Interactions Between Mathematics and Physics: The History of the Concept of Function—Teaching with and About Nature of Mathematics

Science.gov (United States)

Kjeldsen, Tinne Hoff; Lützen, Jesper

2015-07-01

In this paper, we discuss the history of the concept of function and emphasize in particular how problems in physics have led to essential changes in its definition and application in mathematical practices. Euler defined a function as an analytic expression, whereas Dirichlet defined it as a variable that depends in an arbitrary manner on another variable. The change was required when mathematicians discovered that analytic expressions were not sufficient to represent physical phenomena such as the vibration of a string (Euler) and heat conduction (Fourier and Dirichlet). The introduction of generalized functions or distributions is shown to stem partly from the development of new theories of physics such as electrical engineering and quantum mechanics that led to the use of improper functions such as the delta function that demanded a proper foundation. We argue that the development of student understanding of mathematics and its nature is enhanced by embedding mathematical concepts and theories, within an explicit-reflective framework, into a rich historical context emphasizing its interaction with other disciplines such as physics. Students recognize and become engaged with meta-discursive rules governing mathematics. Mathematics teachers can thereby teach inquiry in mathematics as it occurs in the sciences, as mathematical practice aimed at obtaining new mathematical knowledge. We illustrate such a historical teaching and learning of mathematics within an explicit and reflective framework by two examples of student-directed, problem-oriented project work following the Roskilde Model, in which the connection to physics is explicit and provides a learning space where the nature of mathematics and mathematical practices are linked to natural science.

Dr Math Rocks!: Using instant messaging to help pupils with mathematics homework

CSIR Research Space (South Africa)

Butgereit, LL

2008-05-01

Full Text Available Mathematics education in South Africa needs help. This paper describes a project where school aged pupils could get help with their mathematics homework using MXit, South Africa's most popular instant messaging system, on their cell phones...

Proof Auditing Formalised Mathematics

Directory of Open Access Journals (Sweden)

Mark Miles Adams

2016-01-01

Full Text Available The first three formalisations of major mathematical proofs have heralded a new age in formalised mathematics, establishing that informal proofs at the limits of what can be understood by humans can be checked by machine. However, formalisation itself can be subject to error, and yet there is currently no accepted process in checking, or even much concern that such checks have not been performed. In this paper, we motivate why we should be concerned about correctness, and argue the need for proof auditing, to rigorously and independently check a formalisation. We discuss the issues involved in performing an audit, and propose an effective and efficient auditing process. Throughout we use the Flyspeck Project, that formalises the Kepler Conjecture proof, to illustrate our point.

Engaging Students in Mathematical Modeling through Service-Learning

Science.gov (United States)

Carducci, Olivia M.

2014-01-01

I have included a service-learning project in my mathematical modeling course for the last 6 years. This article describes my experience with service-learning in this course. The article includes a description of the course and the service-learning projects. There is a discussion of how to connect with community partners and identify…

Boundary crossing and brokering between disciplines in pre-service mathematics teacher education

Science.gov (United States)

Goos, Merrilyn; Bennison, Anne

2017-12-01

In many countries, pre-service teacher education programs are structured so that mathematics content is taught in the university's mathematics department and mathematics pedagogy in the education department. Such program structures make it difficult to authentically interweave content with pedagogy in ways that acknowledge the roles of both mathematicians and mathematics educators in preparing future teachers. This article reports on a project that deliberately fostered collaboration between mathematicians and mathematics educators in six Australian universities in order to investigate the potential for learning at the boundaries between the two disciplinary communities. Data sources included two rounds of interviews with mathematicians and mathematics educators and annual reports prepared by each participating university over the three years of the project. The study identified interdisciplinary boundary practices that led to integration of content and pedagogy through new courses co-developed and co-taught by mathematicians and mathematics educators, and new approaches to building communities of pre-service teachers. It also developed an evidence-based classification of conditions that enable or hinder sustained collaboration across disciplinary boundaries, together with an empirical grounding for Akkerman and Bakker's conceptualisation of transformation as a mechanism for learning at the boundary between communities. The study additionally highlighted the ambiguous nature of boundaries and implications for brokers who work there to connect disciplinary paradigms.

[Ethics and medicine in Michel Foucault: the humanistic dimension of medicine derived from a genealogy of morality].

Science.gov (United States)

Gomes, Benjamim

2005-01-01

The article presents the results of a doctoral dissertation defended at the Universidad de Salamanca, based on Foucault's final decade of writings. If Foucault's goal in writing The History of Sexuality was to fashion a genealogy of ethics, my goal in analyzing this book, along with his other writings, is to demonstrate his last contribution to the history of medicine. He moves from a conception of power over others towards a conception of power over oneself, an exclusive terrain of ancient Greek morality. As a thinker who tries to understand today's problems by going to their roots, Foucault develops less a history than a philosophy of history. Considered an anti-humanist, he leaves us with a portrait of a wholly ethical-humanistic medicine.

Empirical and genealogical analysis of non-vocational adult education in Europe

Science.gov (United States)

Manninen, Jyri

2017-06-01

Non-formal, non-vocational adult education (NFNVAE) is a low-cost, low-threshold learning activity that generates many benefits for individuals and society, and it should play a more central role in educational policy. NFNVAE's challenge is that it lacks clear concepts and definitions and is, therefore, less systematically covered in statistics, research and surveys. This article seeks to tackle these problems by providing (1) a mapping of NFNVAE courses in 10 European countries and (2) a conceptual framework for NFNVAE. The mapping is based on survey data ( n = 8,646) that contain information on 14,063 courses, which were coded into 24 categories and three general types: civic, liberal and basic skills education. Popular adult education courses (in the radical meaning of the term) were not found among these data; therefore, further mapping is needed. The genealogical analysis shows that ideological discourses and cultural practices should be taken into account when different concepts are used to describe NFNVAE. Especially the concept "popular" needs more clarification, since it is frequently used to refer to several different traditions, for example the Nordic " folkbildning", which is a civic education system, and therefore differs from Latin American popular adult education, which is a radical, non-governmental movement.[Figure not available: see fulltext.

Neurotree: a collaborative, graphical database of the academic genealogy of neuroscience.

Science.gov (United States)

David, Stephen V; Hayden, Benjamin Y

2012-01-01

Neurotree is an online database that documents the lineage of academic mentorship in neuroscience. Modeled on the tree format typically used to describe biological genealogies, the Neurotree web site provides a concise summary of the intellectual history of neuroscience and relationships between individuals in the current neuroscience community. The contents of the database are entirely crowd-sourced: any internet user can add information about researchers and the connections between them. As of July 2012, Neurotree has collected information from 10,000 users about 35,000 researchers and 50,000 mentor relationships, and continues to grow. The present report serves to highlight the utility of Neurotree as a resource for academic research and to summarize some basic analysis of its data. The tree structure of the database permits a variety of graphical analyses. We find that the connectivity and graphical distance between researchers entered into Neurotree early has stabilized and thus appears to be mostly complete. The connectivity of more recent entries continues to mature. A ranking of researcher fecundity based on their mentorship reveals a sustained period of influential researchers from 1850-1950, with the most influential individuals active at the later end of that period. Finally, a clustering analysis reveals that some subfields of neuroscience are reflected in tightly interconnected mentor-trainee groups.

Developing A-level physics students' mathematical skills - a way forward?

Science.gov (United States)

Raw, A. J.

1999-09-01

This article outlines research that details the mathematical difficulties of physics students and it also discusses various projects to overcome these difficulties. The successes of these projects are very encouraging and show a way forward for A-level physics teaching.

Genealogía de la difícil relación entre antropología social y turismo

Directory of Open Access Journals (Sweden)

Antonio Miguel Nogués Pedregal

2009-01-01

Full Text Available En el texto se transforma el proceso de conocimiento antropológico sobre turismo en el objeto de conocimiento mismo. Para ello se aborda de manera sintética una genealogía de la aparición del turismo como objeto de estudio fenoménico, expuesta en los tres momentos epistemológicos que se han dado en la relación entre antropología y turismo. En ésta se trasluce un progresivo abandono de los sistemas discretos y dialécticos de análisis, hacia modelos más contextuales en los que predomina la metáfora del continuo y la dialógica.

Didactic use of cinema in Mathematics

Directory of Open Access Journals (Sweden)

Pablo BELTRÁN PELLICER

2014-10-01

Full Text Available The use of cinema as didactical resource in the Mathematics classroom has interested several authors and teachers during the last years, mainly because of its power to motivate students. On this point, suggestive compilations of scenes containing mathematical references, detailed analysis of movies closely related to Mathematics and even didactical materials to be used in the classroom have been developed. This article proposes a theoretical framework for designing classroom sequences based on the didactical situation which can arise from movies or fiction series scenes. In order to develop such a framework, we follow a didactical engineering process, taking into account some specific characteristics, as the one related to the didactical transposition, as it is required to consider the mathematic knowledge within the chosen scene, overall the way it appears. As well, a classroom experience is described, designed following the mentioned guidelines and implemented in the course of a collaborative project between two secondary education centers, where a significant motivation increase has been detected, due to using mathematical situations from the real world (or from fictional contexts but which can be easily assimilated by the students. There was also evidence about the fact that the designed didactical sequences allow to reduce the cognitive gap required to acquire certain mathematical concepts, because of the scenes provide additional information within an extra-mathematical context. Therefore, our proposal establishes some basic considerations in order to efficiently design didactical sequences using movie scenes as a resource, underlining its power to motivate as well as its facilitating ability when introducing new mathematical concepts to our students.

Mathematic anxiety, help seeking behavior and cooperative learning

OpenAIRE

Masoud Gholamali Lavasani; Farah Khandan

2011-01-01

Present project assess the effectiveness of cooperative learning over the mathematic anxiety and review the behavior of help seeking in first grade high school girl students. The experimental research procedure was in the form of pre-post tests after a period of 8 sessions of teaching. To measure the variables, the questionnaire of mathematic anxiety (Shokrani, 2002) and the questionnaire of help seeking technique (Ghadampour, 1998) were practiced (accepting or avoiding help seeking).To perfo...

Predicting Relationships between Mathematics Anxiety, Mathematics Teaching Anxiety, Self-efficacy Beliefs towards Mathematics and Mathematics Teaching

OpenAIRE

Unlu, Melihan; Ertekin, Erhan; Dilmac, Bulent

2017-01-01

The purpose of the research is to investigate the relationships betweenself-efficacy beliefs toward mathematics, mathematics anxiety and self-efficacybeliefs toward mathematics teaching, mathematics teaching anxiety variables andtesting the relationships between these variables with structural equationmodel. The sample of the research, which was conducted in accordance withrelational survey model, consists of 380 university students, who studied atthe department of Elementary Mathematics Educ...

GENDER GENEALOGY OF READING AS CULTURAL PRACTICE

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N. Yu. Kryvda

2017-06-01

Full Text Available Purpose. The article is devoted to the cultural aspect of texts using in European culture. The paper found out methodological basis of correctly interpreting the term "practice" in the philosophical and sociological discourses. In the first case the concept reveals human nature; appealing to the field of ethics and intersubjective interactions. In sociological approach the term practice is contrasted to institutional life. It seems to be an organic; vital relevance of actions for contrast to the mechanically regulated community life. Methodology. The paper considered the typology of human intellectual conditions according to Kant’s divided into pure and practical reason. The last one directs action-willed individual efforts so as to meet the universal relevance and ethical coherence. Gottlieb Fichte interpreted practice reason as the way to combine intellectual intentions and material conditions of human being. G. W. F. Hegel enriched the concept with terms of "objectification" and "alienation” of labour. Karl Marx formulated the main features of activity approach to the human nature exploring. In sociological discourse the term practice is opposed to mechanically done actions (according to institutional normativity. Given the philosophical and sociological methodological contexts the reading is studied as activity that aimed emotional and volitional contact with sense. Originality. The paper analysed the genealogy of reading practices. There were selected two types of text perception – rapid "masculine" and prudent "women's" reading. Women salon environment of the XVIII-th century capitalistic Europe was the main condition for the forming of literary-aware public. The authors analysed the process of reading of the text-as-satisfaction and text-as-pleasure (R. Barthes. The work presents the overview of classical studies of sociocultural field: Thorstein Veblen; Vladimir Toporov; Rolan Barthes and contemporary researchers such as T. Markova

Maternal genealogical patterns of chicken breeds sampled in Europe.

Science.gov (United States)

Lyimo, C M; Weigend, A; Msoffe, P L; Hocking, P M; Simianer, H; Weigend, S

2015-08-01

The aim of this study was to investigate the maternal genealogical pattern of chicken breeds sampled in Europe. Sequence polymorphisms of 1256 chickens of the hypervariable region (D-loop) of mitochondrial DNA (mtDNA) were used. Median-joining networks were constructed to establish evolutionary relationships among mtDNA haplotypes of chickens, which included a wide range of breeds with different origin and history. Chicken breeds which have had their roots in Europe for more than 3000 years were categorized by their founding regions, encompassing Mediterranean type, East European type and Northwest European type. Breeds which were introduced to Europe from Asia since the mid-19th century were classified as Asian type, and breeds based on crossbreeding between Asian breeds and European breeds were classified as Intermediate type. The last group, Game birds, included fighting birds from Asia. The classification of mtDNA haplotypes was based on Liu et al.'s (2006) nomenclature. Haplogroup E was the predominant clade among the European chicken breeds. The results showed, on average, the highest number of haplotypes, highest haplotype diversity, and highest nucleotide diversity for Asian type breeds, followed by Intermediate type chickens. East European and Northwest European breeds had lower haplotype and nucleotide diversity compared to Mediterranean, Intermediate, Game and Asian type breeds. Results of our study support earlier findings that chicken breeds sampled in Europe have their roots in the Indian subcontinent and East Asia. This is consistent with historical and archaeological evidence of chicken migration routes to Europe. © 2015 Stichting International Foundation for Animal Genetics.

Theoretical constructs for early intervention programs in mathematics:

DEFF Research Database (Denmark)

Lindenskov, Lena; Kirsted, Katrine

2017-01-01

. It is not a straightforward endeavour. One reason is that the term theory as well as the term practice may very well be given different meanings by different agents. This variation is in our view to be considered in “implementation research” and Lewin’s statement ought to be qualified by two questions “Who cares for a good...... theory?” and “What makes a good theory good for whom?” This paper explores this variation of how theory is perceived by mathematics teachers and by mathematics researchers involved in a developmental project on early intervention in mathematics education in Denmark. The paper exemplifies how agents...

Teachers' Views of the Challenges of Teaching Grade 9 Applied Mathematics in Toronto Schools

Science.gov (United States)

Stoilescu, Dorian; McDougall, Douglas; Egodawatte, Gunawardena

2016-01-01

Mathematics teachers, mathematics department heads, curriculum leaders, and administrators from 11 schools in four school boards from Toronto, Ontario, Canada, participated in a project to improve the teaching and learning in grade 9 mathematics classrooms. In each of these schools, an implementation team was created, so that at least three…

The Mathematical Theory of Multifocal Lenses

Institute of Scientific and Technical Information of China (English)

Jacob RUBINSTEIN

2017-01-01

This paper presents the fundamental optical concepts of designing multifocal ophthalmic lenses and the mathematical methods associated with them.In particular,it is shown that the design methodology is heavily based on differential geometric ideas such as Willmore surfaces.A key role is played by Hamilton's eikonal functions.It is shown that these functions capture all the information on the local blur and distortion created by the lenses.Along the way,formulas for computing the eikonal functions are derived.Finally,the author lists a few intriguing mathematical problems and novel concepts in optics as future projects.

A genealogical map of the concept of habit.

Science.gov (United States)

Barandiaran, Xabier E; Di Paolo, Ezequiel A

2014-01-01

The notion of information processing has dominated the study of the mind for over six decades. However, before the advent of cognitivism, one of the most prominent theoretical ideas was that of Habit. This is a concept with a rich and complex history, which is again starting to awaken interest, following recent embodied, enactive critiques of computationalist frameworks. We offer here a very brief history of the concept of habit in the form of a genealogical network-map. This serves to provide an overview of the richness of this notion and as a guide for further re-appraisal. We identify 77 thinkers and their influences, and group them into seven schools of thought. Two major trends can be distinguished. One is the associationist trend, starting with the work of Locke and Hume, developed by Hartley, Bain, and Mill to be later absorbed into behaviorism through pioneering animal psychologists (Morgan and Thorndike). This tradition conceived of habits atomistically and as automatisms (a conception later debunked by cognitivism). Another historical trend we have called organicism inherits the legacy of Aristotle and develops along German idealism, French spiritualism, pragmatism, and phenomenology. It feeds into the work of continental psychologists in the early 20th century, influencing important figures such as Merleau-Ponty, Piaget, and Gibson. But it has not yet been taken up by mainstream cognitive neuroscience and psychology. Habits, in this tradition, are seen as ecological, self-organizing structures that relate to a web of predispositions and plastic dependencies both in the agent and in the environment. In addition, they are not conceptualized in opposition to rational, volitional processes, but as transversing a continuum from reflective to embodied intentionality. These are properties that make habit a particularly attractive idea for embodied, enactive perspectives, which can now re-evaluate it in light of dynamical systems theory and complexity research.

A genealogical map of the concept of habit

Directory of Open Access Journals (Sweden)

Xabier E Barandiaran

2014-07-01

Full Text Available The notion of information processing has dominated the study of the mind for over six decades. However, before the advent of cognitivism, one of the most prominent theoretical ideas was that of Habit. This is a concept with a rich and complex history, which is again starting to awaken interest, following recent embodied, enactive critiques of computationalist frameworks. We offer here a very brief history of the concept of habit in the form of a genealogical network-map. This serves to provide an overview of the richness of this notion and as a guide for further re-appraisal. We identify 77 thinkers and their influences, and group them into seven schools of thought. Two major trends can be distinguished. One is the associationist trend, starting with the work of Locke and Hume, developed by Hartley, Bain and Mill to be later absorbed into behaviourism through pioneering animal psychologists (Morgan and Thorndike. This tradition conceived of habits atomistically and as automatisms (a conception later debunked by cognitivism. Another historical trend we have called organicism inherits the legacy of Aristotle and develops along German idealism, French spiritualism, pragmatism, and phenomenology. It feeds into the work of continental psychologists in the early 20th century, influencing important figures such as Merleau-Ponty, Piaget, and Gibson. But it has not yet been taken up by mainstream cognitive neuroscience and psychology. Habits, in this tradition, are seen as ecological, self-organizing structures that relate to a web of predispositions and plastic dependencies both in the agent and in the environment. In addition, they are not conceptualized in opposition to rational, volitional processes, but as transversing a continuum from reflective to embodied intentionality. These are properties that make habit a particularly attractive idea for embodied, enactive perspectives, which can now re-evaluate it in light of dynamical systems theory and

Teaching (Un)Connected Mathematics: Two Teachers' Enactment of the Pizza Problem

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Hill, Heather C.; Charalambous, Charalambos Y.

2012-01-01

This paper documents the ways mathematical knowledge for teaching (MKT) and curriculum materials appear to contribute to the enactment of a 7th grade "Connected Mathematics Project" lesson on comparing ratios. Two teachers with widely differing MKT scores are compared teaching this lesson. The comparison of the teachers' lesson enactments suggests…

Ética y medicina en Michel Foucault: la dimensión humanística de la medicina a partir de una genealogía de la moral Ethics and medicine in Michel Foucault: the humanistic dimension of medicine derived from a genealogy of morality

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Benjamim Gomes

2005-12-01

Full Text Available Este trabajo presenta una tesis doctoral leída en la Universidad de Salamanca y basada en los escritos de la última década de Foucault. Si escribiendo la Historia de la sexualidad su objetivo fue hacer una genealogía de la ética, analizándola, junto con los demás escritos suyos, mi objetivo es enseñar su última aportación a la historia de la medicina. Él parte de una concepción de poder sobre los demás hacia una concepción de poder sobre uno mismo, espacio exclusivo de la antigua moral griega. Como pensador que busca comprender los problemas de hoy yendo a sus raíces, más que historia Foucault hace filosofía de la historia. Considerado un antihumanista, él nos deja el retrato de una medicina absolutamente ético-humanística.The article presents the results of a doctoral dissertation defended at the Universidad de Salamanca, based on Foucault's final decade of writings. If Foucault's goal in writing The History of Sexuality was to fashion a genealogy of ethics, my goal in analyzing this book, along with his other writings, is to demonstrate his last contribution to the history of medicine. He moves from a conception of power over others towards a conception of power over oneself, an exclusive terrain of ancient Greek morality. As a thinker who tries to understand today's problems by going to their roots, Foucault develops less a history than a philosophy of history. Considered an anti-humanist, he leaves us with a portrait of a wholly ethical-humanistic medicine.

Predicting Relationships between Mathematics Anxiety, Mathematics Teaching Anxiety, Self-Efficacy Beliefs towards Mathematics and Mathematics Teaching

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Unlu, Melihan; Ertekin, Erhan; Dilmac, Bulent

2017-01-01

The purpose of the research is to investigate the relationships between self-efficacy beliefs toward mathematics, mathematics anxiety and self-efficacy beliefs toward mathematics teaching, mathematics teaching anxiety variables and testing the relationships between these variables with structural equation model. The sample of the research, which…

9th Annual UNCG Regional Mathematics and Statistics Conference

CERN Document Server

Chhetri, Maya; Gupta, Sat; Shivaji, Ratnasingham

2015-01-01

This volume contains rigorously reviewed papers on the topics presented by students at The 9th Annual University of North Carolina at Greensboro Regional Mathematics and Statistics Conference (UNCG RMSC) that took place on November 2, 2013.  All papers are coauthored by student researchers and their faculty mentors. This conference series was inaugurated in 2005, and it now attracts over 150 participants from over 30 universities from North Carolina and surrounding states. The conference is specifically tailored for students to present their research projects that encompass a broad spectrum of topics in mathematics, mathematical biology, statistics, and computer science.

The Effectiveness of Project Based Learning in Trigonometry

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Gerhana, M. T. C.; Mardiyana, M.; Pramudya, I.

2017-09-01

This research aimed to explore the effectiveness of Project-Based Learning (PjBL) with scientific approach viewed from interpersonal intelligence toward students’ achievement learning in mathematics. This research employed quasi experimental research. The subjects of this research were grade X MIPA students in Sleman Yogyakarta. The result of the research showed that project-based learning model is more effective to generate students’ mathematics learning achievement that classical model with scientific approach. This is because in PjBL model students are more able to think actively and creatively. Students are faced with a pleasant atmosphere to solve a problem in everyday life. The use of project-based learning model is expected to be the choice of teachers to improve mathematics education.

Post secondary project-based learning in science, technology, engineering and mathematics

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Rachel A Ralph

2016-03-01

Full Text Available Project-based learning (PjBL - to distinguish from problem-based learning - PBL has become a recurrent practice in K-12 classroom environments. As PjBL has become prominent in K-12 classrooms, it has also surfaced in post-secondary institutions.  The purpose of this paper is to examine the research that has studied a variety of science, technology, engineering and mathematic subjects using PjBL in post-secondary classrooms. Eleven articles (including qualitative, quantitative and mixed methods were included.  The format includes: an introduction and background (which defines PjBL and STEM, research methods, quality appraisal used, results, and a discussion, future research and a conclusion.  Two tables and two figures are included. In this paper, theoretical backgrounds and key terms were identified, followed by a literature review discussing four themes: content knowledge, interdisciplinary skills, collaboration and skill development for future education and careers.  Results suggested that there is a positive connection between content knowledge learning and PjBL in collaborative settings.  Additionally, some negative perceptions arose regarding teamwork situations.  Interdisciplinary skills were achieved, but quite limited in post-secondary classrooms.  PjBL and STEM were perceived to be important for future education and careers.  Future research needs to be completed and institutional curriculum changes informed by the results of this research need to occur to further explore interdisciplinary courses and the use of PjBL.

Hybrid-Lambda: simulation of multiple merger and Kingman gene genealogies in species networks and species trees.

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Zhu, Sha; Degnan, James H; Goldstien, Sharyn J; Eldon, Bjarki

2015-09-15

There has been increasing interest in coalescent models which admit multiple mergers of ancestral lineages; and to model hybridization and coalescence simultaneously. Hybrid-Lambda is a software package that simulates gene genealogies under multiple merger and Kingman's coalescent processes within species networks or species trees. Hybrid-Lambda allows different coalescent processes to be specified for different populations, and allows for time to be converted between generations and coalescent units, by specifying a population size for each population. In addition, Hybrid-Lambda can generate simulated datasets, assuming the infinitely many sites mutation model, and compute the F ST statistic. As an illustration, we apply Hybrid-Lambda to infer the time of subdivision of certain marine invertebrates under different coalescent processes. Hybrid-Lambda makes it possible to investigate biogeographic concordance among high fecundity species exhibiting skewed offspring distribution.

Banach spaces with projectional skeletons

Czech Academy of Sciences Publication Activity Database

Kubiś, Wieslaw

2009-01-01

Roč. 350, č. 2 (2009), s. 758-776 ISSN 0022-247X Institutional research plan: CEZ:AV0Z10190503 Keywords : projection * projectional skeleton * norming set Subject RIV: BA - General Mathematics Impact factor: 1.225, year: 2009

A Model of Professional Competences in Mathematics to Update Mathematical and Didactic Knowledge of Teachers

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Díaz, Verónica; Poblete, Alvaro

2017-01-01

This paper describes part of a research and development project carried out in public elementary schools. Its objective was to update the mathematical and didactic knowledge of teachers in two consecutive levels in urban and rural public schools of Region de Los Lagos and Region de Los Rios of southern Chile. To that effect, and by means of an…

An Architecture Design Project: "Building" Understanding

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Bush, Sarah B.; Albanese, Judith; Karp, Karen S.; Karp, Matthew

2017-01-01

Middle school students need relevant, meaningful contexts to apply emerging mathematical ideas. In this project, through the context of an architecture investigation, seventh-grade students engaged in mathematics involving area, surface area, volume, ratios and proportional thinking, number sense, and technology integration. Students, working in…

Closing the Gap: First Year Success in College Mathematics at an HBCU

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Harrington, Melissa A.; Lloyd, Andrew; Smolinski, Tomasz; Shahin, Mazen

2016-01-01

At our Historically-Black University, about 89% of first-year students place into developmental mathematics, negatively impacting retention and degree completion. In 2012, an NSF-funded learning enrichment project began offering the introductory and developmental mathematics courses on-line over the summer to incoming science, technology,…

Interdisciplinary Biomathematics: Engaging Undergraduates in Research on the Fringe of Mathematical Biology

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Fowler, Kathleen; Luttman, Aaron; Mondal, Sumona

2013-01-01

The US National Science Foundation's (NSF's) Undergraduate Biology and Mathematics (UBM) program significantly increased undergraduate research in the biomathematical sciences. We discuss three UBM-funded student research projects at Clarkson University that lie at the intersection of not just mathematics and biology, but also other fields. The…

Madness, Monstrosity and Writing: Towards a Genealogical Analysis in 'El obsceno pájaro de la noche'

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Santiago Juan-Navarro

2016-06-01

Full Text Available Drawing on Foucault’s concept of “genealogy,” this article explores madness, monstrosity and writing in José Donoso´s The Obscene Bird of Night(1970. Like Foucault, Donoso is interested in studying the body as “the inscribed surface of events,” the locus of a dissociated self (adopting the illusion of a substantial unity, and a mass in perpetual disintegration. Like Donoso, Foucault assaults enlightened reason and the principle of reality in order to subvert and transgress the instrumental rationality and normalcy of bourgeois culture. This essay analyzes Donoso’s novel in light of these concepts in order to open a new path for understanding one of the most obscure texts in modern Latin American fiction.

Mathematics related anxiety: Mathematics bogeyman or not?

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Videnović Marina

2011-01-01

Full Text Available Data of the PISA 2003 survey indicate high levels of mathematics anxiety of students in Serbia. More than half of our students worry whether they will have difficulties in mathematics class or whether they will earn poor marks. Aims of this study therefore are: examining relationship between math anxiety and achievement at mathematics literacy scale; establishing possible predictors of math anxiety and identification of students' groups in relations to their relationship towards mathematics as a subject. Mathematics anxiety is statistically negatively correlated with school achievement and achievement at mathematics literacy scale. Socio-demographic factors, motivational and cognitive aspects related to learning mathematics, perception of school and classroom climate explain 40% variance of mathematics anxiety. Based on students' relationship towards mathematics they cam be divided into three groups; while dimensions that apart them are uninterested-interested in mathematics and presence-absence of anxiety. The group displaying anxiety scores lowest among the three. Applying qualitative analysis students' and teachers' attitudes on specific issues related to teaching and learning mathematics was examined.

Entering into Dialogue about the Mathematical Value of Contextual Mathematising Tasks

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Yoon, Caroline; Chin, Sze Looi; Moala, John Griffith; Choy, Ban Heng

2018-01-01

Our project seeks to draw attention to the rich mathematical thinking that is generated when students work on contextual mathematising tasks. We use a design-based research approach to create ways of reporting that raise the visibility of this rich mathematical thinking while retaining and respecting its complexity. These reports will be aimed for…

A College-Level Foundational Mathematics Course: Evaluation, Challenges, and Future Directions

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Maciejewski, Wes

2012-01-01

Recently in Ontario, Canada, the College Math Project brought to light startling data on the achievement of students in Ontario's College of Applied Arts and Technology System related to their performance in first-year mathematics courses: one-third of the students had failed their first-year mathematics course or were at risk of not completing…

Stealing from Physics: Modeling with Mathematical Functions in Data-Rich Contexts

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Erickson, Tim

2006-01-01

In the course of a project to create physics education materials for secondary schools in the USA we have, not surprisingly, had insights into how students develop certain mathematical understandings. Some of these translate directly into the mathematics classroom. With our materials, students get data from a variety of sources, data that arise in…

Teachers' Mathematics as Mathematics-at-Work

Science.gov (United States)

Bednarz, Nadine; Proulx, Jérôme

2017-01-01

Through recognising mathematics teachers as professionals who use mathematics in their workplace, this article traces a parallel between the mathematics enacted by teachers in their practice and the mathematics used in workplaces found in studies of professionals (e.g. nurses, engineers, bankers). This parallel is developed through the five…

Mythological Recuperation and Performance as Agency for Genealogical Return in Djanet Sears’s Afrika Solo

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Lekan Balogun

2018-04-01

Full Text Available This paper is an examination of Djanet Sears’s Afrika Solo (1990 as a unique example of how Blacks in the global diaspora trace their genealogical roots back to Africa. Drawing from research in anthropology, cultural studies, and performance, the paper purports that Sears’s African-Canadian identity is underlined by her recuperation of a heritage, epistemes and performative aesthetics, and, real or imagined, practices that are not just Afrocentric but specifically Yoruba. Essentially, the paper examines Afrika Solo in the context of Black Aesthetic and more significantly as “text” in a Yoruba sense, which constitutes her own way of “going back to get it.” The paper is divided into two parts: the first part presents a general argument about Sears’s journey back to Africa and the culturally-rooted nature of the performance as opposed to feminist/gender readings of same, while the second part explores ways of understanding the play through the lens of Yoruba ritual and its aesthetics.

Discovering the Art of Mathematics: Using String Art to Investigate Calculus

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von Renesse, Christine; Ecke, Volker

2016-01-01

One goal of our Discovering the Art of Mathematics project is to empower students in the liberal arts to become confident creators of art and imaginative creators of mathematics. In this paper, we describe our experience with using string art to guide liberal arts students in exploring ideas of calculus. We provide excerpts from our inquiry-based…

Examining Fourth-Grade Mathematics Writing: Features of Organization, Mathematics Vocabulary, and Mathematical Representations

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Hebert, Michael A.; Powell, Sarah R.

2016-01-01

Increasingly, students are expected to write about mathematics. Mathematics writing may be informal (e.g., journals, exit slips) or formal (e.g., writing prompts on high-stakes mathematics assessments). In order to develop an effective mathematics-writing intervention, research needs to be conducted on how students organize mathematics writing and…

From immunology to MRI data anlysis: Problems in mathematical biology

Science.gov (United States)

Waters, Ryan Samuel

This thesis represents a collection of four distinct biological projects rising from immunology and metabolomics that required unique and creative mathematical approaches. One project focuses on understanding the role IL-2 plays in immune response regulation and exploring how these effects can be altered. We developed several dynamic models of the receptor signaling network which we analyze analytically and numerically. In a second project focused also on MS, we sought to create a system for grading magnetic resonance images (MRI) with good correlation with disability. The goal is for these MRI scores to provide a better standard for large-scale clinical drug trials, which limits the bias associated with differences in available MRI technology and general grader/participant variability. The third project involves the study of the CRISPR adaptive immune system in bacteria. Bacterial cells recognize and acquire snippets of exogenous genetic material, which they incorporate into their DNA. In this project we explore the optimal design for the CRISPR system given a viral distribution to maximize its probability of survival. The final project involves the study of the benefits for colocalization of coupled enzymes in metabolic pathways. The hypothesized kinetic advantage, known as `channeling', of putting coupled enzymes closer together has been used as justification for the colocalization of coupled enzymes in biological systems. We developed and analyzed a simple partial differential equation of the diffusion of the intermediate substrate between coupled enzymes to explore the phenomena of channeling. The four projects of my thesis represent very distinct biological problems that required a variety of techniques from diverse areas of mathematics ranging from dynamical modeling to statistics, Fourier series and calculus of variations. In each case, quantitative techniques were used to address biological questions from a mathematical perspective ultimately providing

The Influence of Mathematics Professional Development, School-Level, and Teacher-Level Variables on Primary Students' Mathematics Achievement

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Polly, Drew; Wang, Chuang; Martin, Christie; Lambert, Richard; Pugalee, David; Middleton, Catherina

2018-01-01

This study examined the influence of a professional development project about an internet-based mathematics formative assessment tool and related pedagogies on primary teachers' instruction and student achievement. Teachers participated in 72 h of professional development during the year. Descriptive statistics and multivariate analyses of…

Results of Third-Grade Students in a Reform Curriculum on the Illinois State Mathematics Test.

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Carroll, William M.

1997-01-01

Reports on the results of the reform curriculum of the University of Chicago School Mathematics Project's elementary curriculum, Everyday Mathematics, for third-grade students. Results included the fact that only 2% of UCSMP students failed to meet state goals. UCSMP students also scored well in all mathematical areas including number skills and…

Mathematical modelling of fracture hydrology

International Nuclear Information System (INIS)

Herbert, A.W.; Hodgkindon, D.P.; Lever, D.A.; Robinson, P.C.; Rae, J.

1985-01-01

This report reviews work carried out between January 1983 and December 1984 for the CEC/DOE contract 'Mathematical Modelling of Fracture Hydrology' which forms part of the CEC Mirage project (CEC 1984. Come 1985. Bourke et. al. 1983). It describes the development and use of a variety of mathematical models for the flow of water and transport of radionuclides in flowing groundwater. These models have an important role to play in assessing the long-term safety of radioactive waste burial, and in the planning and interpretation of associated experiments. The work is reported under five headings, namely 1) Statistical fracture network modelling, 2) Continuum models of flow and transport, 3) Simplified models, 4) Analysis of laboratory experiments, 5) Analysis of field experiments

Core Support of the Board on Mathematical Sciences

Energy Technology Data Exchange (ETDEWEB)

None

1995-04-04

This proposal summarizes activities conducted by the Board on Mathematical Sciences (BMS) during the period August 1, 1994 to July 31, 1995 and describes future plans of the Board for the period August 1, 1995 to July 31, 1998. We are requesting core support in the amount of $105,000 ($35,000 each year) from the Department of Energy for the additional three-year period. The BMS activities supported exclusively by core funding are the annual Department Chairs Colloquia, the National Science and Technology Symposia, specific reports, the initiation of all projects, continuous oversight of all activities, and partial core support of the Committee on Applied and Theoretical Statistics (CATS). Other activities of the Board include giving recommendations on research directions to federal agencies, and reports on education in the mathematical sciences, interaction of mathematical sciences with other areas, health of the mathematical sciences, and emerging research directions.

Pushing the Limit: A Class Project

Science.gov (United States)

Odafe, Victor U.

2012-01-01

Instructors are constantly struggling to help students understand mathematical concepts as well as the relevance of mathematics to the real world. In calculus, students possess misconceptions of the limit concept. "Pushing the Limit" refers to a semester-long calculus class project that required students to read about, interview calculus…

Teaching Mathematical Modeling in Mathematics Education

Science.gov (United States)

Saxena, Ritu; Shrivastava, Keerty; Bhardwaj, Ramakant

2016-01-01

Mathematics is not only a subject but it is also a language consisting of many different symbols and relations. Taught as a compulsory subject up the 10th class, students are then able to choose whether or not to study mathematics as a main subject. The present paper discusses mathematical modeling in mathematics education. The article provides…

JSXGraph--Dynamic Mathematics with JavaScript

Science.gov (United States)

Gerhauser, Michael; Valentin, Bianca; Wassermann, Alfred

2010-01-01

Since Java applets seem to be on the retreat in web application, other approaches for displaying interactive mathematics in the web browser are needed. One such alternative could be our open-source project JSXGraph. It is a cross-browser library for displaying interactive geometry, function plotting, graphs, and data visualization in a web…

The Effect of Project-Based Learning on Student Self-Efficacy in a Developmental Mathematics Course

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Deutsch, Melissa

2017-01-01

Each year, post-secondary institutions across the nation enroll thousands of students into developmental mathematics courses. Success rates are low for students placed in developmental mathematics courses employing traditional teaching practices. Secondary institutions utilizing more engaging pedagogies and high impact practices, such as…

Mathematical Modeling and Pure Mathematics

Science.gov (United States)

Usiskin, Zalman

2015-01-01

Common situations, like planning air travel, can become grist for mathematical modeling and can promote the mathematical ideas of variables, formulas, algebraic expressions, functions, and statistics. The purpose of this article is to illustrate how the mathematical modeling that is present in everyday situations can be naturally embedded in…

Beyond Discourse: A Genealogical Analysis of an Intersubjective Transformation Process of Gender

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Patricia Amigot Leache

2007-05-01

Full Text Available This article presents a genealogical analysis of a specific process of transformation of gender. It analyses the shifts of a group of Spanish working-class women in the context of the final years of Franco's dictatorship and the transition to democracy. These women took part in the activities of the so-called Centros de Promoción de la Mujer y Cultura Popular [Centres for Women's Promotion and Popular Culture]. I identify the elements of the transformation processes through in-depth interviews with a sample of women. Through these narrations and the documents of the Centres I show the road that goes from a state of domination (in FOUCAULT's words to a more flexible and mobile situation in which not only are the practical possibilities for these women wider, but also we can witness the transformation of the institution itself. The analysis is made with a FOUCAULTian toolbox, using especially FOUCAULT's analysis of power, his theoretical construction of practices of self and the link he posits between such practices and identity games of truth. The analysis shows the intersubjective nature of the processes and of the practices involved in such transformations. URN: urn:nbn:de:0114-fqs070295

Problematizing special observation in psychiatry: Foucault, archaeology, genealogy, discourse and power/knowledge.

Science.gov (United States)

Stevenson, C; Cutcliffe, J

2006-12-01

Special observation by mental health professionals is the recommended approach for those people deemed as at risk or risky. Recent research and academic writing have challenged the benefits of observing people/patients who are defined as 'at risk', and a more human engagement process is being recommended. Despite this assault, practice has not changed substantively, suggesting a need for a thorough exploration and questioning of the practices and process. The paper outlines three Foucaultian approaches to historical analysis. It applies aspects of Foucault's archaeology/genealogy, discourse and power/knowledge to explore the practices of special observation as a means of controlling risk, especially suicide risk. We identify the regulatory function of the 'gaze', professional codes and government policy in relation to restricting professional practices. We argue that observation can be related to moral therapy, wherein the person relinquishes madness for responsibility through a disciplinary process and, in governing risk, a 'professional industry' is created. The regulation of statements about people with mental health issues are exposed and related to what can be said and done by professionals. Finally, we look at productive power in relation to observation, and how it is intimately related to resistance. We conclude with 'soft' recommendations for practice discursively produced through the writing of the paper.

RNA Secondary Structure Prediction by Using Discrete Mathematics: An Interdisciplinary Research Experience for Undergraduate Students

Science.gov (United States)

Ellington, Roni; Wachira, James

2010-01-01

The focus of this Research Experience for Undergraduates (REU) project was on RNA secondary structure prediction by using a lattice walk approach. The lattice walk approach is a combinatorial and computational biology method used to enumerate possible secondary structures and predict RNA secondary structure from RNA sequences. The method uses discrete mathematical techniques and identifies specified base pairs as parameters. The goal of the REU was to introduce upper-level undergraduate students to the principles and challenges of interdisciplinary research in molecular biology and discrete mathematics. At the beginning of the project, students from the biology and mathematics departments of a mid-sized university received instruction on the role of secondary structure in the function of eukaryotic RNAs and RNA viruses, RNA related to combinatorics, and the National Center for Biotechnology Information resources. The student research projects focused on RNA secondary structure prediction on a regulatory region of the yellow fever virus RNA genome and on an untranslated region of an mRNA of a gene associated with the neurological disorder epilepsy. At the end of the project, the REU students gave poster and oral presentations, and they submitted written final project reports to the program director. The outcome of the REU was that the students gained transferable knowledge and skills in bioinformatics and an awareness of the applications of discrete mathematics to biological research problems. PMID:20810968

RNA secondary structure prediction by using discrete mathematics: an interdisciplinary research experience for undergraduate students.

Science.gov (United States)

Ellington, Roni; Wachira, James; Nkwanta, Asamoah

2010-01-01

The focus of this Research Experience for Undergraduates (REU) project was on RNA secondary structure prediction by using a lattice walk approach. The lattice walk approach is a combinatorial and computational biology method used to enumerate possible secondary structures and predict RNA secondary structure from RNA sequences. The method uses discrete mathematical techniques and identifies specified base pairs as parameters. The goal of the REU was to introduce upper-level undergraduate students to the principles and challenges of interdisciplinary research in molecular biology and discrete mathematics. At the beginning of the project, students from the biology and mathematics departments of a mid-sized university received instruction on the role of secondary structure in the function of eukaryotic RNAs and RNA viruses, RNA related to combinatorics, and the National Center for Biotechnology Information resources. The student research projects focused on RNA secondary structure prediction on a regulatory region of the yellow fever virus RNA genome and on an untranslated region of an mRNA of a gene associated with the neurological disorder epilepsy. At the end of the project, the REU students gave poster and oral presentations, and they submitted written final project reports to the program director. The outcome of the REU was that the students gained transferable knowledge and skills in bioinformatics and an awareness of the applications of discrete mathematics to biological research problems.

Mathematical intelligence developed in math learning with classical backsound music of the classical era

Science.gov (United States)

Karlimah

2018-05-01

This study examines the application of classical music backsound in mathematics learning. The method used is quasi experimental design nonequivalent pretest-posttest control group in elementary school students in Tasikmalaya city, Indonesia. The results showed that classical music contributed significantly to the mathematical intelligence of elementary school students. The mathematical intelligence shown is in the cognitive ability ranging from the level of knowledge to evaluation. High level mathematical intelligence is shown by students in reading and writing integers with words and numbers. The low level of mathematical intelligence exists in projecting the story into a mathematical problem. The implication of this research is the use of classical music backsound on learning mathematics should pay attention to the level of difficulty of mathematics material being studied.

Connecting Mathematics and Literature: An Analysis of Pre-Service Elementary School Teachers' Changing Beliefs and Knowledge

Science.gov (United States)

Wilburne, Jane M.; Napoli, Mary

2008-01-01

The National Council of Teachers of Mathematics calls for students to see relationships and connections with mathematics (2000). This study examined the influences on eight pre-service elementary school teachers' beliefs and knowledge of teaching mathematics through literature. The semester long project involved both the language arts and…

A study of rural preschool practitioners' views on young children's mathematical thinking

Science.gov (United States)

Hunting, Robert P.; Mousley, Judith A.; Perry, Bob

2012-03-01

The project Mathematical Thinking of Preschool Children in Rural and Regional Australia: Research and Practice aimed to investigate views of preschool practitioners about young children's mathematical thinking and development. Structured individual interviews were conducted with 64 preschool practitioners from rural areas of three Australian states. The questions focused on five broad themes: children's mathematics learning, support for mathematics teaching, technology and computers, attitudes and feelings, and assessment and record keeping. We review results from the interview data for each of these themes, discuss their importance, and outline recommendations related to teacher education as well as resource development and research.

Constructions of Mathematicians in Popular Culture and Learners' Narratives: A Study of Mathematical and Non-Mathematical Subjectivities

Science.gov (United States)

Moreau, Marie-Pierre; Mendick, Heather; Epstein, Debbie

2010-01-01

In this paper, based on a project funded by the UK Economic and Social Research Council considering how people position themselves in relation to popular representations of mathematics and mathematicians, we explore constructions of mathematicians in popular culture and the ways learners make meanings from these. Drawing on an analysis of popular…

Linking Preservice Teachers' Mathematics Self-Efficacy and Mathematics Teaching Efficacy to Their Mathematical Performance

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Bates, Alan B.; Latham, Nancy; Kim, Jin-ah

2011-01-01

This study examined preservice teachers' mathematics self-efficacy and mathematics teaching efficacy and compared them to their mathematical performance. Participants included 89 early childhood preservice teachers at a Midwestern university. Instruments included the Mathematics Self-Efficacy Scale (MSES), Mathematics Teaching Efficacy Beliefs…

Exploring a Structure for Mathematics Lessons That Foster Problem Solving and Reasoning

Science.gov (United States)

Sullivan, Peter; Walker, Nadia; Borcek, Chris; Rennie, Mick

2015-01-01

While there is widespread agreement on the importance of incorporating problem solving and reasoning into mathematics classrooms, there is limited specific advice on how this can best happen. This is a report of an aspect of a project that is examining the opportunities and constraints in initiating learning by posing challenging mathematics tasks…

Experimentally supported mathematical modeling of continuous baking processes

DEFF Research Database (Denmark)

Stenby Andresen, Mette

and temperature) and control the process (air flow, temperature, and humidity) are therefore emphasized. The oven is furthermore designed to work outside the range of standard tunnel ovens, making it interesting for manufacturers of both baking products and baking equipment. A mathematical model describing......The scope of the PhD project was to increase knowledge on the process-to-product interactions in continuous tunnel ovens. The work has focused on five main objectives. These objectives cover development of new experimental equipment for pilot plant baking experiments, mathematical modeling of heat...... and mass transfer in a butter cookie product, and evaluation of quality assessment methods. The pilot plant oven is a special batch oven designed to emulate continuous convection tunnel oven baking. The design, construction, and validation of the oven has been part of the project and is described...

Secret Message Decryption: Group Consulting Projects Using Matrices and Linear Programming

Science.gov (United States)

Gurski, Katharine F.

2009-01-01

We describe two short group projects for finite mathematics students that incorporate matrices and linear programming into fictional consulting requests presented as a letter to the students. The students are required to use mathematics to decrypt secret messages in one project involving matrix multiplication and inversion. The second project…

The Analysis of Geometrical Reasoning Ability Viewed from Self-Efficacy on Connected Mathematic Project (CMP Learning Etnomathematics-Based

Directory of Open Access Journals (Sweden)

Desi Dwi Damaryanti

2017-11-01

Full Text Available The purpose of this research was to know the geometrical reasoning ability of the students viewed from the self-efficacy through the learning of  Connected Mathematic Project (CMP ethnomathematic-based. The type of this research was qualitative which was descriptive. To obtained the validity of the qualitative data, the checking technique used in this research was sources triangulation, which had been done by comparing the suitability of the obtained data from the results of the interview and the test. Population of this research was the students of grade VIII at SMP Negeri 1 Sidoharjo and the sample was the students from VIII A Class. At the final, 12 research subjects were chosen to represent the group of level 1 self-efficacy, level 2 self-efficacy, level 3 self-efficacy, level 4 self efficacy, level 5 self-efficacy, and level 6 self-efficacy. In this research, there was a finding which shows us that the students with high self-efficacy had low ability to finish the geometrical reasoning ability test, while the students with low self-efficacy had the ability to finish the geometrical reasoning ability test. The factors which affected the finding were the motivations and the interest of learning mathematics which was affecting the attitude of the students in the classroom.

Contrasts in Mathematical Challenges in A-Level Mathematics and Further Mathematics, and Undergraduate Mathematics Examinations

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Darlington, Ellie

2014-01-01

This article describes part of a study which investigated the role of questions in students' approaches to learning mathematics at the secondary-tertiary interface, focussing on the enculturation of students at the University of Oxford. Use of the Mathematical Assessment Task Hierarchy taxonomy revealed A-level Mathematics and Further Mathematics…

Physics, Computer Science and Mathematics Division. Annual report, 1 January-31 December 1979

International Nuclear Information System (INIS)

Lepore, J.V.

1980-09-01

This annual report describes the research work carried out by the Physics, Computer Science and Mathematics Division during 1979. The major research effort of the Division remained High Energy Particle Physics with emphasis on preparing for experiments to be carried out at PEP. The largest effort in this field was for development and construction of the Time Projection Chamber, a powerful new particle detector. This work took a large fraction of the effort of the physics staff of the Division together with the equivalent of more than a hundred staff members in the Engineering Departments and shops. Research in the Computer Science and Mathematics Department of the Division (CSAM) has been rapidly expanding during the last few years. Cross fertilization of ideas and talents resulting from the diversity of effort in the Physics, Computer Science and Mathematics Division contributed to the software design for the Time Projection Chamber, made by the Computer Science and Applied Mathematics Department

Perceptions and needs of South African Mathematics teachers ...

African Journals Online (AJOL)

Hennie

Department of Science, Mathematics and Technology Education, Faculty of ... This article reports on the first phase of a broader project that focuses on ..... Figure 3 Percentage of teachers who have access to a computer and internet at home ...

Inter-genomic displacement via lateral gene transfer of bacterial trp operons in an overall context of vertical genealogy

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Keyhani Nemat O

2004-06-01

Full Text Available Abstract Background The growing conviction that lateral gene transfer plays a significant role in prokaryote genealogy opens up a need for comprehensive evaluations of gene-enzyme systems on a case-by-case basis. Genes of tryptophan biosynthesis are frequently organized as whole-pathway operons, an attribute that is expected to facilitate multi-gene transfer in a single step. We have asked whether events of lateral gene transfer are sufficient to have obscured our ability to track the vertical genealogy that underpins tryptophan biosynthesis. Results In 47 complete-genome Bacteria, the genes encoding the seven catalytic domains that participate in primary tryptophan biosynthesis were distinguished from any paralogs or xenologs engaged in other specialized functions. A reliable list of orthologs with carefully ascertained functional roles has thus been assembled and should be valuable as an annotation resource. The protein domains associated with primary tryptophan biosynthesis were then concatenated, yielding single amino-acid sequence strings that represent the entire tryptophan pathway. Lateral gene transfer of several whole-pathway trp operons was demonstrated by use of phylogenetic analysis. Lateral gene transfer of partial-pathway trp operons was also shown, with newly recruited genes functioning either in primary biosynthesis (rarely or specialized metabolism (more frequently. Conclusions (i Concatenated tryptophan protein trees are congruent with 16S rRNA subtrees provided that the genomes represented are of sufficiently close phylogenetic spacing. There are currently seven tryptophan congruency groups in the Bacteria. Recognition of a succession of others can be expected in the near future, but ultimately these should coalesce to a single grouping that parallels the 16S rRNA tree (except for cases of lateral gene transfer. (ii The vertical trace of evolution for tryptophan biosynthesis can be deduced. The daunting complexities engendered

Entering into dialogue about the mathematical value of contextual mathematising tasks

Science.gov (United States)

Yoon, Caroline; Chin, Sze Looi; Moala, John Griffith; Choy, Ban Heng

2018-03-01

Our project seeks to draw attention to the rich mathematical thinking that is generated when students work on contextual mathematising tasks. We use a design-based research approach to create ways of reporting that raise the visibility of this rich mathematical thinking while retaining and respecting its complexity. These reports will be aimed for three classroom stakeholders: (1) students, who wish to reflect on and enhance their mathematical learning; (2) teachers, who wish to integrate contextual mathematising tasks into their teaching practice and (3) researchers, who seek rich tasks for generating observable instances of mathematical thinking and learning. We anticipate that these reports and the underlying theoretical framework for creating them will contribute to greater awareness of and appreciation for the mathematical value of contextual mathematising tasks in learning, teaching and research.

Study and Research Paths at Upper Secondary Mathematics Education

DEFF Research Database (Denmark)

Jessen, Britta Eyrich

the scope of teaching at this level. With respect to mathematical modelling, links and gaps were identified between scholarly knowledge and knowledge to be taught in secondary school. It is suggested that SRP based teaching can bridge parts of the identified gaps. Finally, it is found that in order for SRP......In didactics of mathematics, researchers have for decades been interested in how to teach students to pose questions and solve problems. Several approaches rely on the idea, that students learn mathematics, when they are engaged in activities similar to research mathematicians. This PhD project...... touch upon these ideas from the perspective offered by the Anthropological Theory of Didactics (ATD ). Within ATD, teaching is proposed to be designed as Study and Research Paths (SRP). This thesis investigates how SRP's support the students' learning of mathematics in a bidisciplinary context involving...

Historical Research: How to Fit Minority and Women's Studies into Mathematics Class

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Saraco, Margaret R.

2008-01-01

This article presents a lesson for studying minority and women's contributions to the field of mathematics in the middle school classroom. This lesson may be able to stem the tide of the shrinking number of students entering the field of mathematics by helping them become interested in its history. Nonetheless, this project encourages students to…

Using Mathematics Literature with Prospective Secondary Mathematics Teachers

Science.gov (United States)

Jett, Christopher C.

2014-01-01

Literature in mathematics has been found to foster positive improvements in mathematics learning. This manuscript reports on a mathematics teacher educator's use of literature via literature circles with 11 prospective secondary mathematics teachers in a mathematics content course. Using survey and reflection data, the author found that…

On the Origin of Symbolic Mathematics and Its Significance for Wittgenstein’s Thought

Directory of Open Access Journals (Sweden)

Sören Stenlund

2015-07-01

However, the nature of symbolic mathematics has been concealed and confused due to the strong influence of the heritage from the Euclidean and Aristotelian traditions. This essay sheds some light on what has been concealed by approaching some of the crucial issues from a historical perspective. Furthermore, I argue that the conception of modern mathematics as symbolic mathematics was essential to Wittgenstein’s approach to the foundations and nature of mathematics. This connection between Wittgenstein’s thought and symbolic mathematics provides the resources for countering the still prevalent view that he defended an uttrely idiosyncratic conception, disconnected from the progress of serious science. Instead, his project can be seen as clarifying ideas that have been crucial to the development of mathematics since early modernity.

A marriage of continuance: professional development for mathematics lecturers

Science.gov (United States)

Barton, Bill; Oates, Greg; Paterson, Judy; Thomas, Mike

2015-06-01

In a 2-year project, we developed and trialled a mode of lecturing professional development amongst staff in our department of mathematics. Theoretically grounded in Schoenfeld's resources, orientations, and goals (ROG) model of teacher action, a group met regularly to discuss both the video excerpts of themselves lecturing along with written pre- and post-lecture statements of their "ROGs". We found evidence of improved teaching performance but more interestingly, identified key aspects of our practice and of undergraduate mathematics that received repeated attention and developed further theoretical insight into lecturer behaviour in mathematics. The trial has been successful enough to be expanded into further groups that now constitute a professional development culture within our department.

Experiencing teaching and learning quantitative reasoning in a project-based context

Science.gov (United States)

Muir, Tracey; Beswick, Kim; Callingham, Rosemary; Jade, Katara

2016-12-01

This paper presents the findings of a small-scale study that investigated the issues and challenges of teaching and learning about quantitative reasoning (QR) within a project-based learning (PjBL) context. Students and teachers were surveyed and interviewed about their experiences of learning and teaching QR in that context in contrast to teaching and learning mathematics in more traditional settings. The grade 9-12 student participants were characterised by a history of disengagement with mathematics and school in general, and the teacher participants were non-mathematics specialist teachers. Both students and teachers were new to the PjBL situation, which resulted in the teaching/learning relationship being a reciprocal one. The findings indicated that students and teachers viewed QR positively, particularly when compared with traditional mathematics teaching, yet tensions were identified for aspects such as implementation of curriculum and integration of relevant mathematics into projects. Both sets of participants identified situations where learning QR was particularly successful, along with concerns or difficulties about integrating QR into project work. The findings have implications for educators, who may need to examine their own approaches to mathematics teaching, particularly in terms of facilitating student engagement with the subject.

Doing Mathematics with Purpose: Mathematical Text Types

Science.gov (United States)

Dostal, Hannah M.; Robinson, Richard

2018-01-01

Mathematical literacy includes learning to read and write different types of mathematical texts as part of purposeful mathematical meaning making. Thus in this article, we describe how learning to read and write mathematical texts (proof text, algorithmic text, algebraic/symbolic text, and visual text) supports the development of students'…

Genealogías feministas: sobre mujeres, revoluciones e ilustración: una mirada desde el sur Feminist genealogies: on women, revolution & enlightment: a point of view from the south

Directory of Open Access Journals (Sweden)

Alejandra Ciriza Jofré

2012-12-01

Full Text Available Este trabajo apunta a la esbozar y reconstruir genealogías feministas desde el sur, procurando articular la reflexión filosófica sobre el pasado político de las mujeres y los fragmentos dispersos de la historia de las mujeres en Nuestra América. La lectura que me propongo realizar se halla ligada a una perspectiva sobre la relación entre pasado y presente vinculada a la inspiración benjaminiana. Desde ese punto de vista, el pasado que interesa a los y las subalternas es el tiempo ahora, esto es, un tiempo que se nutre del pasado, de la mirada hacia atrás, hacia ese momento significativo en la historia de Nuestra América - el de las guerras de independencia - y el presente. En aquel tiempo se abría un horizonte entonces anticipado como de inauguración de un nuevo tiempo y de un orden político nuevo. Esta reflexión está centrada en las relaciones entre cuerpo, política e historia desde un punto de vista que busca construir conocimiento situado, y producir una crítica a la tendencia a retornar sobre la idea del carácter a-histórico de la subordinación de las mujeres, a transformarla en lo que Geneviève Fraisse denomina una 'querella', un debate sin tiempo en el que se juega la eterna repetición de lo mismo. Una operación que, desde el punto de vista que sostengo, se duplica en el caso de las mujeres del sur.The goal of this work is to sketch and reconstruct Feminist Genealogies from a southern perspective. It aims to articulate a philosophical reflection on women's political past and the disperse fragments of the history of women (herstory in Our America. This reading will be based on the Benjaminian thought about the relationship between past and present. From this point of view, the past that concerns subalterns is the jetzt zeit, a present time that is fed from the regard to the past. Namely, in this case, the relationship between a significant time of the History of Our America - the time of the Independence Wars during

Annual Perspectives in Mathematics Education 2016: Mathematical Modeling and Modeling Mathematics

Science.gov (United States)

Hirsch, Christian R., Ed.; McDuffie, Amy Roth, Ed.

2016-01-01

Mathematical modeling plays an increasingly important role both in real-life applications--in engineering, business, the social sciences, climate study, advanced design, and more--and within mathematics education itself. This 2016 volume of "Annual Perspectives in Mathematics Education" ("APME") focuses on this key topic from a…

"Bildung" and the Historical and Genealogical Critique of Contemporary Culture: Wilhelm von Humboldt's Neo-Humanistic Theory of "Bildung" and Nietzsche's Critique of Neo-Humanistic Ideas in Classical Philology and Education

Science.gov (United States)

Zelic, Tomislav

2018-01-01

To answer the question as to the relation of the idea of "Bildung" and the historical and genealogical critique of contemporary culture, this article takes a detour through nineteenth-century German thought to recall the primary ideas, institutions, and processes such as the university, knowledge/scholarship ("Wissenschaft"),…

The Effects of a Tier 3 Intervention on the Mathematics Performance of Second Grade Students With Severe Mathematics Difficulties.

Science.gov (United States)

Bryant, Brian R; Bryant, Diane Pedrotty; Porterfield, Jennifer; Dennis, Minyi Shih; Falcomata, Terry; Valentine, Courtney; Brewer, Chelsea; Bell, Kathy

2016-01-01

The purpose of this study was to determine the effectiveness of a systematic, explicit, intensive Tier 3 (tertiary) intervention on the mathematics performance of students in second grade with severe mathematics difficulties. A multiple-baseline design across groups of participants showed improved mathematics performance on number and operations concepts and procedures, which are the foundation for later mathematics success. In the previous year, 12 participants had experienced two doses (first and second semesters) of a Tier 2 intervention. In second grade, the participants continued to demonstrate low performance, falling below the 10th percentile on a researcher-designed universal screener and below the 16th percentile on a distal measure, thus qualifying for the intensive intervention. A project interventionist, who met with the students 5 days a week for 10 weeks (9 weeks for one group), conducted the intensive intervention. The intervention employed more intensive instructional design features than the previous Tier 2 secondary instruction, and also included weekly games to reinforce concepts and skills from the lessons. Spring results showed significantly improved mathematics performance (scoring at or above the 25th percentile) for most of the students, thus making them eligible to exit the Tier 3 intervention. © Hammill Institute on Disabilities 2014.

Mathematical sciences for climate change resilience (MS4CR ...

International Development Research Centre (IDRC) Digital Library (Canada)

This project will support the African Institute for Mathematical Sciences' Next Einstein Initiative (AIMS-NEI) in building a critical ... IDRC invites applications for the IDRC Research Awards 2019 ... ROSSA's latest bulletin puts a focus on women.

Showing You're Working: A Project Using Former Pupils' Experiences to Engage Current Mathematics Students

Science.gov (United States)

Musto, Garrod

2008-01-01

To help students view mathematics in a more favourable light, a number of former pupils were contacted and asked to give details of how they use mathematics in their daily lives. This information was gathered through an online questionnaire or visits to the school to talk to pupils--a booklet of responses was also given to students. Attitudinally…

Stereotypy in the Portrayal of Female Characters in Genealogical Cycles of William Faulkner and Miroslav Krleža : Eula Varner Snopes and Charlotta Castelli -Glembay

Directory of Open Access Journals (Sweden)

Biljana Oklopčić

2008-01-01

Full Text Available Defined as genealogies, Faulkner’s Snopes trilogy (The Hamlet, The Town, The Mansion and Krleža’s Glembay trilogy (Gospoda Glembajevi, U agoniji, Leda, together with corresponding short stories and novels, share a whole array of common characteristics. One of them is the stereotypical characterization of women characters. This point of view is justified by the appearance of Eula Varner Snopes as the ravished Southern belle and the rehabilitated Dixie Madonna and Charlotta Castelli-Glembay as the Nietzschean cat woman and femme fatale.

Gaining Modelling and Mathematical Experience by Constructing Virtual Sensory Systems in Maze-Videogames

Science.gov (United States)

Sacristán, Ana Isabel; Pretelín-Ricárdez, Angel

2017-01-01

This work is part of a research project that aims to enhance engineering students' learning of how to apply mathematics in modelling activities of real-world situations, through the construction (design and programming) of videogames. We want also for students to relate their mathematical knowledge with other disciplines (e.g., physics, computer…

Learning at the Boundaries: Collaboration between Mathematicians and Mathematics Educators within and across Institutions

Science.gov (United States)

Bennison, Anne; Goos, Merrilyn

2016-01-01

Collaboration between mathematicians and mathematics educators may provide a means of improving the quality of pre-service teacher education for prospective teachers of mathematics. Some preliminary findings of a project that investigates this type of interdisciplinary collaboration, both within and across institutions, are reported on in this…

A mathematical medley fifty easy pieces on mathematics

CERN Document Server

Szpiro, George G

2010-01-01

Szpiro's book provides a delightful, well-written, eclectic selection of mathematical tidbits that makes excellent airplane reading for anyone with an interest in mathematics, regardless of their mathematical background. Excellent gift material. -Keith Devlin, Stanford University, author of The Unfinished Game and The Language of Mathematics It is great to have collected in one volume the many varied, insightful and often surprising mathematical stories that George Szpiro has written in his mathematical columns for the newspapers through the years. -Marcus du Sautoy, Oxford University, author

Arche papers on the mathematics of abstraction

CERN Document Server

Cook, Roy T

2007-01-01

This volume collects together a number of important papers concerning both the method of abstraction generally and the use of particular abstraction principles to reconstruct central areas of mathematics along logicist lines. Gottlob Frege's original logicist project was, in effect, refuted by Russell's paradox. Crispin Wright has recently revived Frege's enterprise, however, providing a philosophical and technical framework within which a reconstruction of arithmetic is possible. While the Neo-Fregean project has recieved extensive attention and discussion, the present volume is unique in pre

The Relationship among Elementary Teachers’ Mathematics Anxiety, Mathematics Instructional Practices, and Student Mathematics Achievement

OpenAIRE

Hadley, Kristin M.; Dorward, Jim

2011-01-01

Many elementary teachers have been found to have high levels of mathematics anxiety but the impact on student achievement was unknown. Elementary teachers (N = 692) completed the modified Mathematics Anxiety Rating Scale-Revised (Hopko, 2003) along with a questionnaire probing anxiety about teaching mathematics and current mathematics instructional practices. Student mathematics achievement data were collected for the classrooms taught by the teachers. A positive relationship was found betwee...

Some Reflections on the Origin of Reason Through an Outline of the Genealogy of Language in the Light of Homonymity, Analogy, and Metaphor

DEFF Research Database (Denmark)

Kirkeby, Ole Fogh

2016-01-01

The origin of reason through an outline of the genealogy of language in the light of homonymity, analogy, and metaphor. In this chapter, I try to show that reason as a cognitive capacity primarily functions through the use of homonyms. The argument is based on the fact that experience is created...... relating to their value basis, because reason also is involved as their principle of origin—qua practical reason—through which this metaphorical richness was originally coined. These principles of construction and deconstruction may also be applied to the analysis of reason itself since it also has...

The language of mathematics telling mathematical tales

CERN Document Server

Barton, Bill

2008-01-01

Everyday mathematical ideas are expressed differently in different languages. This book probes those differences and explores their implications for mathematics education, arguing for alternatives to how we teach and learn mathematics.

Applied mathematical sciences research at Argonne, April 1, 1981-March 31, 1982

International Nuclear Information System (INIS)

Pieper, G.W.

1982-01-01

This report reviews the research activities in Applied Mathematical Sciences at Argonne National Laboratory for the period April 1, 1981, through March 31, 1982. The body of the report discusses various projects carried out in three major areas of research: applied analysis, computational mathematics, and software engineering. Information on section staff, visitors, workshops, and seminars is found in the appendices

Picture Books Stimulate the Learning of Mathematics

Science.gov (United States)

van den Heuvel-Panhuizen, Marja; van den Boogaard, Sylvia; Doig, Brian

2009-01-01

In this article we describe our experiences using picture books to provide young children (five- to six-year-olds) with a learning environment where they can explore and extend preliminary notions of mathematics-related concepts, without being taught these concepts explicitly. We gained these experiences in the PICO-ma project, which aimed to…

Genetic structure and gene flows within horses: a genealogical study at the french population scale.

Science.gov (United States)

Pirault, Pauline; Danvy, Sophy; Verrier, Etienne; Leroy, Grégoire

2013-01-01

Since horse breeds constitute populations submitted to variable and multiple outcrossing events, we analyzed the genetic structure and gene flows considering horses raised in France. We used genealogical data, with a reference population of 547,620 horses born in France between 2002 and 2011, grouped according to 55 breed origins. On average, individuals had 6.3 equivalent generations known. Considering different population levels, fixation index decreased from an overall species FIT of 1.37%, to an average [Formula: see text] of -0.07% when considering the 55 origins, showing that most horse breeds constitute populations without genetic structure. We illustrate the complexity of gene flows existing among horse breeds, a few populations being closed to foreign influence, most, however, being submitted to various levels of introgression. In particular, Thoroughbred and Arab breeds are largely used as introgression sources, since those two populations explain together 26% of founder origins within the overall horse population. When compared with molecular data, breeds with a small level of coancestry also showed low genetic distance; the gene pool of the breeds was probably impacted by their reproducer exchanges.

Equitable Mathematics Teaching and Learning in Practice: Exploring Students' Negotiations of Identity and Power

Science.gov (United States)

Harper, Frances Kay

2017-01-01

This dissertation builds on and extends research on the relationship between equity-minded mathematics teaching, specifically teaching mathematics for social justice, complex instruction, and project-based learning, and students' learning and identity development. Although different in their structures and strategies, equity-minded mathematics…

Mathematical Modelling Approach in Mathematics Education

Science.gov (United States)

Arseven, Ayla

2015-01-01

The topic of models and modeling has come to be important for science and mathematics education in recent years. The topic of "Modeling" topic is especially important for examinations such as PISA which is conducted at an international level and measures a student's success in mathematics. Mathematical modeling can be defined as using…

Mathematics Underground

Science.gov (United States)

Luther, Kenneth H.

2012-01-01

Mathematical modeling of groundwater flow is a topic at the intersection of mathematics and geohydrology and is rarely encountered in undergraduate mathematics. However, this subject is full of interesting and meaningful examples of truly "applied" mathematics accessible to undergraduates, from the pre-calculus to advanced mathematics levels. This…

A Voyage of Mathematical and Cultural Awareness for Students of Upper Secondary School

Science.gov (United States)

Panagiotou, Evangelos N.

2014-01-01

Many papers have emphasized the need for and importance of particular examples and the underlying rationale for introducing a historical dimension in mathematics education. This article presents the development and implementation of a project, based on original sources, in a situation where the existing curriculum does not include history. The subject was conic sections and the motivating problems and original work which eventually found resolution in modern concepts. The project was carried out during the school year 2006-2007 with 18 students of a Greek experimental high school 2nd class (11th degree). It was devised as a series of worksheets, separate readings and oral presentations and written essays so that students might appreciate that mathematics evolves under the influence of factors intrinsic and extrinsic to it. Both epistemological and disciplinary issues are taken into account. Even though this work is just one case study, we have found that exposing students directly to primary sources in mathematics contributes greatly to motivation and understanding, and illustrates the nature of mathematics as a discipline and as a human endeavour.

Mathematical bridges

CERN Document Server

Andreescu, Titu; Tetiva, Marian

2017-01-01

Building bridges between classical results and contemporary nonstandard problems, Mathematical Bridges embraces important topics in analysis and algebra from a problem-solving perspective. Blending old and new techniques, tactics and strategies used in solving challenging mathematical problems, readers will discover numerous genuine mathematical gems throughout that will heighten their appreciation of the inherent beauty of mathematics. Most of the problems are original to the authors and are intertwined in a well-motivated exposition driven by representative examples. The book is structured to assist the reader in formulating and proving conjectures, as well as devising solutions to important mathematical problems by making connections between various concepts and ideas from different areas of mathematics. Instructors and educators teaching problem-solving courses or organizing mathematics clubs, as well as motivated mathematics students from high school juniors to college seniors, will find Mathematical Bri...

Exploring mathematics anxiety and attitude: Mathematics students' experiences

Science.gov (United States)

Sahri, Nurul Ashikin; Kamaruzaman, Wan Nur Farahdalila Wan; Jamil, Jastini Mohd.; Shaharanee, Izwan Nizal Mohd.

2017-11-01

A quantitative and correlational, survey methods were used to investigate the relationships among mathematical anxiety and attitude toward student's mathematics performance. Participants were 100 students volunteer to enroll in undergraduate Industrial Statistics, Decision Sciences and Business Mathematics at one of northern university in Malaysia. Survey data consisted of demographic items and Likert scale items. The collected data was analyzed by using the idea of correlation and regression analysis. The results indicated that there was a significant positive relationship between students' attitude and mathematics anxiety. Results also indicated that a substantial positive effect of students' attitude and mathematics anxiety in students' achievement. Further study can be conducted on how mathematical anxiety and attitude toward mathematics affects can be used to predict the students' performance in the class.

A Capstone Mathematics Course for Prospective Secondary Mathematics Teachers

Science.gov (United States)

Artzt, Alice F.; Sultan, Alan; Curcio, Frances R.; Gurl, Theresa

2012-01-01

This article describes an innovative capstone mathematics course that links college mathematics with school mathematics and pedagogy. It describes how college juniors in a secondary mathematics teacher preparation program engage in leadership experiences that enable them to learn mathematics for teaching while developing student-centered…

3rd International Conference on Computational Mathematics and Computational Geometry

CERN Document Server

Ravindran, Anton

2016-01-01

This volume presents original research contributed to the 3rd Annual International Conference on Computational Mathematics and Computational Geometry (CMCGS 2014), organized and administered by Global Science and Technology Forum (GSTF). Computational Mathematics and Computational Geometry are closely related subjects, but are often studied by separate communities and published in different venues. This volume is unique in its combination of these topics. After the conference, which took place in Singapore, selected contributions chosen for this volume and peer-reviewed. The section on Computational Mathematics contains papers that are concerned with developing new and efficient numerical algorithms for mathematical sciences or scientific computing. They also cover analysis of such algorithms to assess accuracy and reliability. The parts of this project that are related to Computational Geometry aim to develop effective and efficient algorithms for geometrical applications such as representation and computati...

On Mathematical Understanding: Perspectives of Experienced Chinese Mathematics Teachers

Science.gov (United States)

Cai, Jinfa; Ding, Meixia

2017-01-01

Researchers have long debated the meaning of mathematical understanding and ways to achieve mathematical understanding. This study investigated experienced Chinese mathematics teachers' views about mathematical understanding. It was found that these mathematics teachers embrace the view that understanding is a web of connections, which is a result…

Hands-On Mathematics: Two Cases from Ancient Chinese Mathematics

Science.gov (United States)

Wang, Youjun

2009-01-01

In modern mathematical teaching, it has become increasingly emphasized that mathematical knowledge should be taught by problem-solving, hands-on activities, and interactive learning experiences. Comparing the ideas of modern mathematical education with the development of ancient Chinese mathematics, we find that the history of mathematics in…

Student Perceptions of Writing Projects in a University Differential-Equations Course

Science.gov (United States)

Latulippe, Christine; Latulippe, Joe

2014-01-01

This qualitative study surveyed 102 differential-equations students in order to investigate how students participating in writing projects in university-level mathematics courses perceive the benefits of writing in the mathematics classroom. Based on previous literature on writing in mathematics, students were asked specifically about the benefits…

Mathematical modeling of seed bank dynamics in population genetics

OpenAIRE

Martin, Anna

2017-01-01

We study the genealogical structure of samples from a population for which any givengeneration is made up of direct descendants from one randomly chosen previousgeneration. These occur in nature when there are seed banks or egg banks allowingan individual to leave offspring several generations in the future. Kaj et al. studied in2001 the case where any given generation is made up of descendants from severalprevious generations and showed how this temporal structure in the reproductionmechanis...

Mathematical Fuzzy Logic - State of Art 2001

Czech Academy of Sciences Publication Activity Database

Hájek, Petr

2003-01-01

Roč. 24, - (2003), s. 71-89 ISSN 0103-9059. [WOLLIC'2001. Brasília, 31.07.2001-03.08.2001] R&D Projects: GA MŠk LN00A056 Keywords : fuzzy logic * many valued logic * basic fuzzy logic BL Subject RIV: BA - General Mathematics http://www.mat.unb.br/~matcont/24_4.pdf

Enhancing Mathematical Communication for Virtual Math Teams

Science.gov (United States)

Stahl, Gerry; Çakir, Murat Perit; Weimar, Stephen; Weusijana, Baba Kofi; Ou, Jimmy Xiantong

2010-01-01

The Math Forum is an online resource center for pre-algebra, algebra, geometry and pre-calculus. Its Virtual Math Teams (VMT) service provides an integrated web-based environment for small teams of people to discuss math and to work collaboratively on math problems or explore interesting mathematical micro-worlds together. The VMT Project studies…

A reading intervention programme for mathematics students ...

African Journals Online (AJOL)

Based on the results of Phase I of a reading skills project in 2000 (SAJHE 16(3) 2002), Phase II was undertaken to set up a reading intervention programme on a voluntary basis for students enrolled in a mathematics access module, to determine whether explicit attention given to reading would improve their reading skills ...

Theoretical Mathematics

Science.gov (United States)

Stöltzner, Michael

Answering to the double-faced influence of string theory on mathematical practice and rigour, the mathematical physicists Arthur Jaffe and Frank Quinn have contemplated the idea that there exists a `theoretical' mathematics (alongside `theoretical' physics) whose basic structures and results still require independent corroboration by mathematical proof. In this paper, I shall take the Jaffe-Quinn debate mainly as a problem of mathematical ontology and analyse it against the backdrop of two philosophical views that are appreciative towards informal mathematical development and conjectural results: Lakatos's methodology of proofs and refutations and John von Neumann's opportunistic reading of Hilbert's axiomatic method. The comparison of both approaches shows that mitigating Lakatos's falsificationism makes his insights about mathematical quasi-ontology more relevant to 20th century mathematics in which new structures are introduced by axiomatisation and not necessarily motivated by informal ancestors. The final section discusses the consequences of string theorists' claim to finality for the theory's mathematical make-up. I argue that ontological reductionism as advocated by particle physicists and the quest for mathematically deeper axioms do not necessarily lead to identical results.

Exploring Differential Effects of Mathematics Courses on Mathematics Achievement

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Ma, Xin; McIntyre, Laureen J.

2005-01-01

Using data from the Longitudinal Study of Mathematics Participation (N = 1,518 students from 34 schools), we investigated the effects of pure and applied mathematics courses on mathematics achievement, controlling for prior mathematics achievement. Results of multilevel modelling showed that the effects of pure mathematics were significant after…

El mundo matemático digital: el proyecto WDML (World Digital Mathematics Library

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Macías Virgós, Enrique

2007-06-01

Full Text Available We describe the digitization process of the mathematical literature in the framework of the projects WDML and DML-E.Describimos el proceso de digitalización de la literatura matemática de investigación en el marco del proyecto WDML (World Digital Mathematics Library y del proyecto español DML-E.

Mathematics Curriculum, the Philosophy of Mathematics and its ...

African Journals Online (AJOL)

It is my observation that the current school mathematics curriculum in Ethiopia is not producing competent mathematics students. Many mathematicians in Ethiopia and other part of the world have often expressed grief that the majority of students do not understand mathematical concepts, or do not see why mathematical ...

Negotiating the Boundaries Between Mathematics and Physics

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Radtka, Catherine

2015-07-01

This paper examines physics and mathematics textbooks published in France at the end of the 1950s and at the beginning of the 1960s for children aged 11-15 years old. It argues that at this "middle school" level, textbooks contributed to shape cultural representations of both disciplines and their mutual boundaries through their contents and their material aspect. Further, this paper argues that far from presenting clearly delimited subjects, late 1950s textbooks offered possible connections between mathematics and physics. It highlights that such connections depended upon the type of schools the textbooks aimed at, at a time when educational organization still differentiated pupils of this age. It thus stresses how the audience and its projected aptitudes and needs, as well as the cultural teaching traditions of the teachers in charge, were inseparable from the diverse conceptions of mathematics and physics and their relationships promoted through textbooks of the time.

Mathematics, the Computer, and the Impact on Mathematics Education.

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Tooke, D. James

2001-01-01

Discusses the connection between mathematics and the computer; mathematics curriculum; mathematics instruction, including teachers learning to use computers; and the impact of the computer on learning mathematics. (LRW)

Cartographic science: a compendium of map projections, with derivations

National Research Council Canada - National Science Library

Fenna, Donald

2007-01-01

.... Starting from widely described geometric projecting onto flat paper, cylinder, and cone, and then progressing through several layers of mathematics to reach modern projections, the author maximizes...

Finite Mathematics and Discrete Mathematics: Is There a Difference?

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Johnson, Marvin L.

Discrete mathematics and finite mathematics differ in a number of ways. First, finite mathematics has a longer history and is therefore more stable in terms of course content. Finite mathematics courses emphasize certain particular mathematical tools which are useful in solving the problems of business and the social sciences. Discrete mathematics…

A product of three projections

Czech Academy of Sciences Publication Activity Database

Kopecká, E.; Müller, Vladimír

2014-01-01

Roč. 223, č. 2 (2014), s. 175-186 ISSN 0039-3223 R&D Projects: GA ČR(CZ) GA14-07880S Institutional support: RVO:67985840 Keywords : Hilbert space * projection * extension Subject RIV: BA - General Mathematics Impact factor: 0.610, year: 2014 http://journals.impan.pl/cgi-bin/doi?sm223-2-4

The origin of the logic of symbolic mathematics Edmund Husserl and Jacob Klein

CERN Document Server

Hopkins, Burt C

2011-01-01

Burt C. Hopkins presents the first in-depth study of the work of Edmund Husserl and Jacob Klein on the philosophical foundations of the logic of modern symbolic mathematics. Accounts of the philosophical origins of formalized concepts-especially mathematical concepts and the process of mathematical abstraction that generates them-have been paramount to the development of phenomenology. Both Husserl and Klein independently concluded that it is impossible to separate the historical origin of the thought that generates the basic concepts of mathematics from their philosophical meanings. Hopkins explores how Husserl and Klein arrived at their conclusion and its philosophical implications for the modern project of formalizing all knowledge.

[THE ORIGINS AND ACCOMPLISHMENTS OF ZESPÓŁ HISTORII MATEMATYKI (THE TEAM OF THE HISTORY OF MATHEMATICS)].

Science.gov (United States)

Wójcik, Wiesław

2014-01-01

In this presentation of the activities of Zespół Historii Matematyki (the Team of the History of Mathematics), an undertaking is made to synthesise the most important projects and events that have taken place during the eight years since its founding in 2007. The main directions of the research of the Team are outlined, which include: the exploration of the development of Polish mathematics in the late 19TH and early 20th century in relation to the major discoveries of the European mathematics of that period; the presentation of the most important achievements in the history of the study of the foundations of mathematics; the history of the Riemann zeta function and the history of the emergence of computer methods in mathematics and the study on the relationship between physics and mathematics in the historical perspective. This presentation also introduces important research projects, which emerged during the discussions at the meetings of the Team--it is particularly important to offer an analysis of the speeches of the Polish scholars at the first international congresses of mathematicians and to underline the importance of the new ideas presented there for the development of the mathematical environment in Poland. Additionally, four papers on the history of mathematics, presented in this Kwartalnik, representative for the researches conducted by the Team, are also briefly discussed here.

Mathematical Intelligence and Mathematical Creativity: A Causal Relationship

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Tyagi, Tarun Kumar

2017-01-01

This study investigated the causal relationship between mathematical creativity and mathematical intelligence. Four hundred thirty-nine 8th-grade students, age ranged from 11 to 14 years, were included in the sample of this study by random cluster technique on which mathematical creativity and Hindi adaptation of mathematical intelligence test…

Interoperability in the OpenDreamKit Project: The Math-in-the-Middle Approach

OpenAIRE

Dehaye, Paul-Olivier; Kohlhase, Michael; Konovalov, Alexander; Lelièvre, Samuel; Pfeiffer, Markus; Thiéry, Nicolas M.

2016-01-01

OpenDreamKit - "Open Digital Research Environment Toolkit for the Advancement of Mathematics" - is an H2020 EU Research Infrastructure project that aims at supporting, over the period 2015-2019, the ecosystem of open-source mathematical software systems. OpenDreamKit will deliver a flexible toolkit enabling research groups to set up Virtual Research Environments, customised to meet the varied needs of research projects in pure mathematics and applications. An important step in the OpenDreamKi...

On the implicit programming approach in a class of mathematical programs with equilibrium constraints

Czech Academy of Sciences Publication Activity Database

Outrata, Jiří; Červinka, Michal

2009-01-01

Roč. 38, 4B (2009), s. 1557-1574 ISSN 0324-8569 R&D Projects: GA ČR GA201/09/1957 Institutional research plan: CEZ:AV0Z10750506 Keywords : mathematical problem with equilibrium constraint * state constraints * implicit programming * calmness * exact penalization Subject RIV: BA - General Mathematics Impact factor: 0.378, year: 2009 http://library.utia.cas.cz/separaty/2010/MTR/outrata-on the implicit programming approach in a class of mathematical programs with equilibrium constraints.pdf

Categorization and Analysis of Explanatory Writing in Mathematics

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Craig, Tracy S.

2011-01-01

The aim of this article is to present a scheme for coding and categorizing students' written explanations of mathematical problem-solving activities. The scheme was used successfully within a study project carried out to determine whether student problem-solving behaviour could be positively affected by writing explanatory strategies to…

Professional Development Strategically Connecting Mathematics and Science: The Impact on Teachers' Confidence and Practice

Science.gov (United States)

Baxter, Juliet A.; Ruzicka, Angie; Beghetto, Ronald A.; Livelybrooks, Dean

2014-01-01

The press to integrate mathematics and science comes from researchers, business leaders, and educators, yet research that examines ways to support teachers in relating these disciplines is scant. Using research on science and mathematics professional development, we designed a professional development project to help elementary teachers improve…

PENGARUH MODEL PROJECT BASED LEARNING TERHADAP KEMAMPUAN BERPIKIR KREATIF MATEMATIKA SISWA

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Hesti Noviyana

2017-09-01

Full Text Available Abstract: The problems in this study relate to the learning model of Project Based Learning and students' creative thinking ability in mathematics. The purpose of the research to know the influence of the model of Project Based Learning on the ability to think creatively mathematics students VIII grade even semester SMP Negeri 3 Bandar Lampung lesson 2016/2017 . The research used experimental method with the population that is all students of class VIII with the amount of 347, while the sample is taken 2 class that is class VIII A as experiment class which amounted to 31, class VIII C as control class which amounted 30. The sample was taken using Cluster Random Sampling technique. To know the ability of creative thinking mathematics students authors perform tests in the form of essays as many as 5 questions that have been tested the validity and reliability. Hypothesis testing in this study using t test. From the results of hypothesis testing using t-test obtained t value = 14.27. From the distribution table t at the significant level of 5% is known t = 2.00 means t> t, so it can be concluded "There is Influence of Model Based Project Based on the Ability of Creative Thinking Mathematics Students".Keywords: Project Based Learning, creative thinking ability of mathematics

Who's Counting? Legitimating Measurement in the Audit Culture

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Ocean, Jude; Skourdoumbis, Andrew

2016-01-01

What gives legitimacy to the numbers that constitute the measurement techniques of the audit culture? We argue that the audit culture's blind application of numbers to people as if there was no moral or ethical dimension to the calculation rests on a military discourse resident in mathematics. This argument is based on the genealogy presented in…

1st International Conference on Industrial and Applied Mathematics of the Indian Subcontinent

CERN Document Server

Kočvara, Michal

2002-01-01

An important objective of the study of mathematics is to analyze and visualize phenomena of nature and real world problems for its proper understanding. Gradually, it is also becoming the language of modem financial instruments. To project some of these developments, the conference was planned under the joint auspices of the Indian Society of Industrial and Applied mathematics (ISlAM) and Guru Nanak Dev University (G. N. D. U. ), Amritsar, India. Dr. Pammy Manchanda, chairperson of Mathematics Department, G. N. D. U. , was appointed the organizing secretary and an organizing committee was constituted. The Conference was scheduled in World Mathematics Year 2000 but, due one reason or the other, it could be held during 22. -25. January 2001. How­ ever, keeping in view the suggestion of the International Mathematics union, we organized two symposia, Role of Mathematics in industrial development and vice-versa and How image of Mathematics can be improved in public. These two symposia aroused great interest among...

Ethnophysics, Mathematical Modeling, Geometry... All in the same Manzuá

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Ednilson Sergio Ramalho de Souza

2013-06-01

Full Text Available The objective this is paper is to show partial results of research for project of doctorate whose intention is to analyze the Ethnophysics of the amazon fisherman end to develop innovative didactic resources for the conceptual approach in Physics and Mathematics in the classroom of the high school and higher education in environment of Mathematical Modeling. The research question was: How the build the Manzuá can contextualize lessons of Physics and Mathematics in high school? The methodology used was ethnographicresearch. The theoretical foundations were Ethnomathematics (D’AMBROSIO, 2008, Mental Models (JONHSON-LAIRD, 1983, Mathematical Modeling (CHAVES e ESPÍRITO SANTO, 2008 end Conceptual Field ((VERGNAUD, 2007. The initial results suggest which the traditional physical knowledge is strongly related to mental models formed in function long years practice in the construction of the Manzuá end the operational invariants take part in the mental models. The situations lived during the construction of the Manzuá can base situations-problem in the classes of Physics and Mathematics in environment of Mathematical Modeling. We can, therefore, develop didactics resources that relate the traditional knowledge to the school knowledge

Longitudinal Data on the Effectiveness of Mathematics Mini-Games in Primary Education

Science.gov (United States)

Bakker, Marjoke; Van den Heuvel-Panhuizen, Marja; Robitzsch, Alexander

2015-01-01

This paper describes a dataset consisting of longitudinal data gathered in the BRXXX project. The aim of the project was to investigate the effectiveness of online mathematics mini-games in enhancing primary school students' multiplicative reasoning ability (multiplication and division). The dataset includes data of 719 students from 35 primary…

Learning Mathematics for Teaching Mathematics: Non-Specialist Teachers' Mathematics Teacher Identity