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Search Results: 1 - 10 of 202846 matches for " Eric D. Widmer "
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Family Inclusiveness and Spatial Dispersion: The Spatial Consequences of Having Large and Diversified Family Configurations  [PDF]
Eric D. Widmer, Gil Viry
Open Journal of Social Sciences (JSS) , 2017, DOI: 10.4236/jss.2017.55024
Abstract: This article stresses the critical role of family inclusiveness for shaping the spatiality of families. Some individuals have a rather exclusive definition of their family, focusing on partner, children, siblings and parents. Others develop inclusive definitions of family by considering extended kin, step relatives and friends as significant family members. Family inclusiveness is hypothesized to account for a large share of the dispersion of family members throughout space. Data consisted of a stratified sample of 300 mothers of school-aged children living in the cosmopolitan city of Geneva. The results show that spatial dispersion of families increases with the number of family members considered significant. Inclusion of family members beyond the nuclear family of origin is paradoxically associated with a localised family context. Overall, this study emphasises the importance of family inclusiveness as a key dimension for understanding family spatiality in globalized societies.
Vínculos de formación y transmisión del conocimiento en la botánica del siglo XVIII: un análisis de redes sociales
René Sigrist,Eric D. Widmer
REDES : Revista Hispana para el Análisis de Redes Sociales , 2011,
Abstract: En esta contribución se desarrolla un enfoque de redes sociales sobre la formación de los botánicos europeos en el siglo XVIII.En un período en el que el estudio de las plantas se estaba convirtiendo en un campo autónomo de investigación, la práctica de la botánica y otras ciencias relacionadas movilizó a un grupo muy diverso de actores. Para muchos de ellos, la iniciación en la ciencia de las plantas fue parte de sus estudios de medicina. Otros fueron formados como colaboradores de un erudito destacado en el contexto de un jardín real, a veces también en las facultades de filosofía. Otros fueron autodidactas. Con los datos biográficos disponibles hemos realizado un censo sistemático de los maestros y discípulos de un conjunto de 928 botánicos occidentales activos entre 1700 y 1830. De este modo hemos identificado tres subgrupos, cada uno de ellos con distintas características y lógicas de desarrollo. Las características específicas de estos subgrupos se analizan desde una perspectiva histórica, con especial atención a los diversos contextos institucionales que los produjeron. El análisis de los datos muestra la creciente autonomía de la botánica respecto a la formación médica, así como el carácter cada vez más nacional de las escuelas dominantes, al menos en Francia.
Training links and transmission of knowledge in 18th Century botany: a social network analysis
René Sigrist,Eric D. Widmer
REDES : Revista Hispana para el Análisis de Redes Sociales , 2011,
Abstract: This contribution develops a social network approach to the training of European botanists in the 18th century. In a period when the study of plants increasingly became an autonomous field of research, the practice of botany and related sciences mobilized a very diverse group of actors. For many of them, initiation to the science of plants was part of their medical studies. Others were trained as collaborators with an outstanding scholar in the context of a royal garden or elsewhere, sometimes also in philosophy colleges or faculties. Still others were self-taught. To the extent that biographical data were available, we made a systematic census of the masters and disciples of a set of 928 Western botanists active between 1700 and 1830. Three subsets were thus identified, each of them showing distinct characteristics and developmental patterns. The specific features of these subsets are discussed in a historical perspective, with a particular attention to the various institutional contexts which produced them. The data analysis basically shows the growing autonomy of botany with regard to medical training, as well as the increasingly national character of the dominant schools, at least in France.
Qui est je? ou la difficile construction de soi dans l'hypermodernité
éric D. Widmer
SociologieS , 2010,
Abstract: L'ouvrage de Vincent de Gaulejac Qui est je ? traite de la question de la construction de l'identité individuelle dans les sociétés de l'hypermodernité, caractérisées par l'inconstance des ressources et des cadres sociaux à partir desquels les individus peuvent produire leur vie.L'ouvrage commence par dénoncer l'utilisation normative de la notion de sujet, un sujet érigé par les idéologies de la modernité comme une figure prométhéenne, capable de tout faire, de tout atteindre par la force...
A note on generators of number fields
Jeffrey D. Vaaler,Martin Widmer
Mathematics , 2012,
Abstract: We establish upper bounds for the smallest height of a generator of a number field $k$ over the rational field $\Q$. Our first bound applies to all number fields $k$ having at least one real embedding. We also give a second conditional result for all number fields $k$ such that the Dedekind zeta-function associated to the Galois closure of $k/\Q$ satisfies GRH. This provides a partial answer to a question of W. Ruppert.
Number fields without small generators
Jeffrey D. Vaaler,Martin Widmer
Mathematics , 2014, DOI: 10.1017/S0305004115000298
Abstract: Let $D>1$ be an integer, and let $b=b(D)>1$ be its smallest divisor. We show that there are infinitely many number fields of degree $D$ whose primitive elements all have relatively large height in terms of $b$, $D$ and the discriminant of the number field. This provides a negative answer to a questions of W. Ruppert from 1998 in the case when $D$ is composite. Conditional on a very weak form of a folk conjecture about the distribution of number fields, we negatively answer Ruppert's question for all $D>3$.
Electrical current distribution across a metal-insulator-metal structure during bistable switching
C. Rossel,G. I. Meijer,D. Bremaud,D. Widmer
Physics , 2001, DOI: 10.1063/1.1389522
Abstract: Combining scanning electron microscopy (SEM) and electron-beam-induced current (EBIC) imaging with transport measurements, it is shown that the current flowing across a two-terminal oxide-based capacitor-like structure is preferentially confined in areas localized at defects. As the thin-film device switches between two different resistance states, the distribution and intensity of the current paths, appearing as bright spots, change. This implies that switching and memory effects are mainly determined by the conducting properties along such paths. A model based on the storage and release of charge carriers within the insulator seems adequate to explain the observed memory effect.
Law and the Human Cost of Social and Economic Development  [PDF]
Eric D. Smaw
Beijing Law Review (BLR) , 2016, DOI: 10.4236/blr.2016.72016
Abstract: In what follows, I offer philosophical analyses of the history of the United States for the purpose of demonstrating that many industries in America thrived on the enslavement, segregation, oppression, and exploitation of African-Americans. As a way of overcoming the problems of the past, I offer a five-fold solution that entails compensating the victims of oppression and exploitation, repealing the protections that shield those who engage in oppression and exploitation from criminal and civil responsibility, encouraging “whistle-blowers” to come forward and praising them as advocates of social justice when they do so, developing interpersonal relations between those who are oppressed and exploited and social justice advocates, and utilizing social justice advocates to ensure that the principles of liberty and equality, codes of ethics, and anti-discrimination laws are not violated or sacrificed for economic gains or any other reasons. In the end, I conclude with an analysis of how we might reconceive of the relations between businesses, communities, and individuals such that we can engage in social and economic development and avoid oppression and exploitation.
The (2+1)-d U(1) Quantum Link Model Masquerading as Deconfined Criticality
D. Banerjee,F. -J. Jiang,P. Widmer,U. -J. Wiese
Physics , 2013, DOI: 10.1088/1742-5468/2013/12/P12010
Abstract: The $(2+1)$-d U(1) quantum link model is a gauge theory, amenable to quantum simulation, with a spontaneously broken SO(2) symmetry emerging at a quantum phase transition. Its low-energy physics is described by a $(2+1)$-d $\RP(1)$ effective field theory, perturbed by a dangerously irrelevant SO(2) breaking operator, which prevents the interpretation of the emergent pseudo-Goldstone boson as a dual photon. At the quantum phase transition, the model mimics some features of deconfined quantum criticality, but remains linearly confining. Deconfinement only sets in at high temperature.
Crystalline Confinement
D. Banerjee,P. Widmer,F. -J. Jiang,U. -J. Wiese
Physics , 2013,
Abstract: We show that exotic phases arise in generalized lattice gauge theories known as quantum link models in which classical gauge fields are replaced by quantum operators. While these quantum models with discrete variables have a finite-dimensional Hilbert space per link, the continuous gauge symmetry is still exact. An efficient cluster algorithm is used to study these exotic phases. The $(2+1)$-d system is confining at zero temperature with a spontaneously broken translation symmetry. A crystalline phase exhibits confinement via multi-stranded strings between charge-anti-charge pairs. A phase transition between two distinct confined phases is weakly first order and has an emergent spontaneously broken approximate $SO(2)$ global symmetry. The low-energy physics is described by a $(2+1)$-d $\mathbb{R}P(1)$ effective field theory, perturbed by a dangerously irrelevant $SO(2)$ breaking operator, which prevents the interpretation of the emergent pseudo-Goldstone boson as a dual photon. This model is an ideal candidate to be implemented in quantum simulators to study phenomena that are not accessible using Monte Carlo simulations such as the real-time evolution of the confining string and the real-time dynamics of the pseudo-Goldstone boson.
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