Linear Form of 3-scale Relativity Algebra and the Relevance of Stability

We show that the algebra of the recently proposed Triply Special Relativity can be brought to a linear (ie, Lie) form by a correct identification of its generators. The resulting Lie algebra is the stable form proposed by Vilela Mendes a decade ago, itself a reapparition of Yang's algebra, dating from 1947. As a corollary we assure that, within the Lie algebra framework, there is no Quadruply Special Relativity.Comment: 5 page

Can aerosols be trapped in open flows?

The fate of aerosols in open flows is relevant in a variety of physical contexts. Previous results are consistent with the assumption that such finite-size particles always escape in open chaotic advection. Here we show that a different behavior is possible. We analyze the dynamics of aerosols both in the absence and presence of gravitational effects, and both when the dynamics of the fluid particles is hyperbolic and nonhyperbolic. Permanent trapping of aerosols much heavier than the advecting fluid is shown to occur in all these cases. This phenomenon is determined by the occurrence of multiple vortices in the flow and is predicted to happen for realistic particle-fluid density ratios.Comment: Animation available at http://www.pks.mpg.de/~rdvilela/leapfrogging.htm

Ética e diferença no processo de pesquisa com grupos de conversações públicas

Objetivamos analisar a realização de 10 encontros de facilitação de diálogos sobre direitos de pessoas LGBT (Lésbicas, Gays, Bissexuais, Travestis e Transexuais) em dois estados brasileiros - Paraná e Minas Gerais -, seguindo a estrutura de conversa do Projeto de Conversações Públicas (PCP). 50 pessoas participaram dos encontros, sendo LGBT, familiares de LGBT, pastores, padres, militantes LGBT, coordenadores de grupos religiosos, profissionais da saúde, educadores, policiais e políticos. A perspectiva construcionista social sustentou a análise da transcrição das áudio-gravações dos encontros, das conversas pós-grupo e dos formulários de feedback dos participantes. A discussão destacou: 1) as implicações da valorização da diferença como compromisso ético e epistemológico do PCP, 2) a necessidade da reflexão por parte dos facilitadores com relação a com quais diferenças eles podem/devem se comprometer, e 3) o questionamento de quais efeitos pretendidos e alcançados enquadram e dão direção ao compromisso dos facilitadores com a diferença no grupo.The aim of this study is to analyze 10 dialogue facilitation meetings on the subject of the rights to LGBT (Lesbian, Gay, Bisexual, and Transgender) in the states of Paraná and Minas Gerais, Brazil, following the Public Conversations Project (PCP), Boston, USA. 50 people attended the meetings, LGBT, LGBT family members, pastors, priests, LGBT activists, coordinators of religious groups, health professionals, educators, police and politicians. Social constructionist discourse supported the analysis of the meetings, the post-group discussions and feedback forms from participants about their participation in the meetings. Discussion highlighted: 1) the implications of valuing difference as ethical and epistemological commitment to conduct the PCP, 2) the need for reflection on the part of the facilitators with respect to which differences they can/should be committed with, and 3) the questioning of which intended and achieved effects give direction to the commitment of the facilitators with the difference in the group

Lagarta-enroladeira da macieira Bonagota cranaodes (Meyrick, 1937) (Lepidoptera:Tortricidae): bioecologia, monitoramento e controle.

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Progress and bottlenecks in the early domestication of the perennial oilseed Silphium integrifolium, a sunflower substitute

Silflower (Silphium integrifolium Michx.) is in the early stages of domestication as a perennial version of oilseed sunflower, its close relative. Grain crops with deep perennial root systems will provide farmers with new alternatives for managing soil moisture and limiting or remediating soil erosion, fertilizer leaching, and loss of soil biota. Several cycles of selection for increased seed production potential following initial germplasm evaluation in 2002 have provided opportunities to document the botany and ecology of this relatively obscure species, to compare agronomic practices for improving its propagation and management, and to evaluate the differences between semi-domesticated and wild accessions that have accrued over this time through intentional and unintentional genetic processes. Key findings include: domestication has increased aboveground biomass at seedling and adult stages; seed yield has increased more, achieving modest improvement in harvest index. Harvest index decreases with nitrogen fertilization. Silflower acquires nitrogen and water from greater depth than typical crops. In agricultural silflower stands within its native range, we found that Puccinia silphii (rust) and Eucosma giganteana (moth) populations build up to unacceptable levels, but we also found genetic variation for traits contributing to resistance or tolerance. Breeding or management for reduced height and vegetative plasticity should be top priorities for future silflower research outside its native range.Fil: Vilela, Alejandra Elena. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: González Paleo, Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; ArgentinaFil: Turner, Kathryn. The Land Institute; Estados UnidosFil: Peterson, Kelsey. The Land Institute; Estados UnidosFil: Ravetta, Damián Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; ArgentinaFil: Crews, Timothy E.. The Land Institute; Estados UnidosFil: Van Tassel, David. The Land Institute; Estados Unido

La participación de la familia en el tratamiento de los trastornos alimentarios

O objetivo deste estudo foi compreender os sentidos da participação da família no tratamento produzidos em um grupo de apoio aos familiares de pessoas diagnosticadas com anorexia e bulimia. Participaram familiares atendidos no contexto de um serviço especializado. O corpus foi constituído pelos registros audiogravados de sessão de grupo, nos quais se buscou delimitar os segmentos interacionais relevantes para o alcance dos objetivos. A perspectiva construcionista social foi utilizada como suporte teórico-metodológico e fundamentou a análise dos dados. Os resultados permitiram compreender que as diversas descrições das relações da família com o "transtorno alimentar" permitem delimitar diferentes possibilidades de significar a participação dos familiares no tratamento. Concluiu-se que o grupo pode funcionar como um espaço privilegiado para acompanhar essa produção de sentidos in statu nascendi, permitindo explorar a construção, desconstrução e reconstrução de significados alternativos, que podem enriquecer o horizonte interpretativo de cada participante.This study aims to understand the meanings about the family participation in the treatment produced in a support group for the families of people diagnosed with anorexia and bulimia. The participants of this study were families attended at a specialized health care service. The data was constituted by the audio recorded registrations of the group session, which were analyzed through the delimitation of its different interactional sections according to this study purposes. The social constructionism approach was used as theoretical and methodological reference and was used to data analysis. The results permitted understanding that the different descriptions about the relation between the family and the treatment can restrict the different possibilities to give meanings to the families' participation in the treatment. We conclude that the group may function as a significant space to observe the meaning production in statu nascendi, making possible to explore the construction and reconstruction of alternative meanings, that may enrich the interpretative possibilities of each participant.El objetivo de cuesto estudio fue comprender los sentidos sobre la participación de la familia en el tratamiento producido en un grupo de apoyo a los familiares de personas diagnosticadas con anorexia y bulimia. Hicieron parte del estudio familiares atendidos en el contexto de un servicio especializado. El corpus fue constituido por los registros audio grabados de sesiones de grupo, en los cuales se buscó delimitar los segmentos interacciónales relevantes para el alcance del objetivo. El enfoque del construccionismo social fue utilizado como suporte teórico-metodológico y fundamentó el analisis de los datos. Los resultados permitieron comprender que las diversas descripciones sobre las relaciones de la familia con trastornos alimentarios permiten delimitar diferentes posibilidades de significar la participación de los familiares en el tratamiento. Concluye que los grupos pueden funcionar como un espacio privilegiado para acompañar esa producción de sentidos in statu nascendi, permitiendo explorar la construcción, desmanche y reconstrucción de los significados alternativos, que pueden enriquecer los horizontes de interpretación de cada participante

Mahākāśyapa, His Lineage, and the Wish for Buddhahood: Reading Anew the Bodhgayā Inscriptions of Mahānāman

This article investigates the religious message of a set of inscriptions from Bodhgayā issued by Sinhalese monks in the 5th and 6th centuries ce. The long inscription of the hierarch Mahānāman, in particular, allows an in-depth understanding of this monk’s self-representation as the heir of a virtuous lineage descending from the Elder Mahākāśyapa, committed to the transmission of the Saṃyukta-Āgama, and related to the ruling dynasty of Laṅkā. Moreover, it provides the rationale behind Mahānāman’s aspiration to Buddhahood, as the donor dedicates to this aim the merits of the erection of a temple on the Bodhimaṇḍa itself, hosting a representation of Śākyamuni’s Awakening. I argue that Mahānāman is part of a milieu sharing common origins, monastic background, and aspirations, a milieu that was later labelled as *Mahāyāna-Sthavira by the Chinese pilgrim Xuanzang