Search results for "mathematics"

Design aspects of rating scales in questionnaires

2018

Women Scientists as Decor: The Image of Scientists in Spanish Press Pictures

2017

Women are still less present in scientific areas than men. This study analyzes the visual representation of women scientists in Spanish press and concludes that they are also underrepresented in newspapers. We analyze 1,134 photographs published in 2014 and 2015 in the science news sections of the four largest distribution Spanish newspapers. A tendency to present men more often as the protagonists of the information and women as a visual resource is also observed. This text proposes the need for the media to be aware of such underrepresentation and to match the number of men and women in graphic materials.

Packing colorings of subcubic outerplanar graphs

2018

Given a graph $G$ and a nondecreasing sequence $S=(s_1,\ldots,s_k)$ of positive integers, the mapping $c:V(G)\longrightarrow \{1,\ldots,k\}$ is called an $S$-packing coloring of $G$ if for any two distinct vertices $x$ and $y$ in $c^{-1}(i)$, the distance between $x$ and $y$ is greater than $s_i$. The smallest integer $k$ such that there exists a $(1,2,\ldots,k)$-packing coloring of a graph $G$ is called the packing chromatic number of $G$, denoted $\chi_{\rho}(G)$. The question of boundedness of the packing chromatic number in the class of subcubic (planar) graphs was investigated in several earlier papers; recently it was established that the invariant is unbounded in the class of all sub…

Inhomogeneous long-range percolation in the weak decay regime

2023

We study a general class of percolation models in Euclidean space including long-range percolation, scale-free percolation, the weight-dependent random connection model and several other previously investigated models. Our focus is on the weak decay regime, in which inter-cluster long-range connection probabilities fall off polynomially with small exponent, and for which we establish several structural properties. Chief among them are the continuity of the bond percolation function and the transience of infinite clusters.

Miscellaneous Graph Preliminaries

2020

Summary This article contains many auxiliary theorems which were missing in the Mizar Mathematical Library [2] to the best of the author’s knowledge. Most of them regard graph theory as formalized in the GLIB series (cf. [8]) and most of them are preliminaries needed in [7] or other forthcoming articles.

Propositions pour une littérature d’investigation

2017

Le temps semble a l’alliance de la litterature et des sciences sociales. Mais les modalites en sont encore incertaines. Au lieu de conside­rer l’anthropologie comme une forme de litterature, on peut envisager la litterature comme une enquete. Cette « litterature d’investigation » se donne notamment pour objectif de documenter des formes de vie et de monter des dispositifs rendant compte d’aspects inapercus de phenomenes sociaux. Elle occupe ainsi une position intermediaire : elle se menage a la fois une liberte et une creativite relatives vis-a-vis des protocoles d’enquete propres aux sciences sociales et une certaine mefiance pour un respect trop reverencieux envers la litterature.

The relationship between loading history and proximal femoral diaphysis cross-sectional geometry

2017

Objectives We investigated the relationship between loading history and bone biomechanical properties used in physical activity reconstructions. These bone properties included bone bending and torsional strength (J), cortical area (CA), the direction of the major axis (theta angle), and element shape ratios determined from cross sections of standardized bone length. In addition, we explored the applicability of anatomically determined cross sections. Methods Our material consisted of hip and proximal thigh magnetic resonance images of Finnish female athletes (N = 91) engaged in high-jump, triple-jump, endurance running, swimming, power-lifting, soccer and squash; along with a group of activ…

“Not in Possession of Any Weltanschauung”: Otto Neugebauer’s Flight from Nazi Germany and His Search for Objectivity in Mathematics, in Reviewing, an…

2016

Two major factors have to be considered to account for Neugebauer’s “Weltanschauung”, in particular his apparent or real rejection of philosophical or political judgments. On the one hand, Neugebauer, as a mathematician and a historian, had to cope, with the double character of mathematics as a science in its continuity and universality, independent of time, and of mathematics as a characteristic and fundamental product of each individual culture. On the other hand emphasis has to be put on Neugebauer being torn between organizational work (institution building, reviewing, editing) and historical research. One has to consider the vicissitudes of Neugebauer’s long and eventful life, which wa…

Who designs the classroom’s images? Study of visual culture diversity at three Valencian schools

2021

The research reported on here elaborated on the effects that images displayed on the walls have in schools as a variable in evaluating the educational quality. Mixed methods were used to analyse the images displayed on the walls of 27 classrooms to determine their provenance and authorship. The results show quantitative, qualitative and aesthetical values of the school visual culture, thanks to the numerous photographic series (resembling in graphs) which are a testimony of each classroom. After the typologies of the displayed images at the schools had been documented, it was demonstrated that images mostly come from the school products industry and from faculty members.i  The kind of analy…

Environmental problems and Geographic education. A case study: Learning about the climate and landscape in Ontinyent (Spain)

2021

AbstractCultural perceptions of the environment bring us back to elements and factors guided by “natural” cause-effect principles. It seems that academic education has had little effect on the manner and results of learning about changes in the local landscape, especially as regards rational explanations. There is considerable difficulty relating academic concepts about the climate to transformations in the environmental landscape. Teaching tasks are mediatized due to the use of rigorous and precise concepts which facilitate functional and satisfactory learning. This is the objective of the research this article aims to undertake, for which we have chosen the case of Ontinyent (Spain). This…