Estimation of Brain Network Atlases using Diffusive-Shrinking Graphs:Application to Developing Brains

Many methods have been developed to spatially normalize a population of brain images for estimating a mean image as a populationaverage atlas. However, methods for deriving a network atlas from a set of brain networks sitting on a complex manifold are still absent. Learning how to average brain networks across subjects constitutes a key step in creating a reliable mean representation of a population of brain networks, which can be used to spot abnormal deviations from the healthy network atlas. In this work, we propose a novel network atlas estimation framework, which guarantees that the produced network atlas is clean (for tuning down noisy measurements) and well-centered (for being optimally close to all subjects and representing the individual traits of each subject in the population). Specifically, for a population of brain networks, we first build a tensor, where each of its frontal-views (i.e., frontal matrices) represents a connectivity network matrix of a single subject in the population. Then, we use tensor robust principal component analysis for jointly denoising all subjects’ networks through cleaving a sparse noisy network population tensor from a clean low-rank network tensor. Second, we build a graph where each node represents a frontal-view of the unfolded clean tensor (network), to leverage the local manifold structure of these networks when fusing them. Specifically, we progressively shrink the graph of networks towards the centered mean network atlas through non-linear diffusion along the local neighbors of each of its nodes. Our evaluation on the developing functional and morphological brain networks at 1, 3, 6, 9 and 12 months of age has showed a better centeredness of our network atlases, in comparison with the baseline network fusion method. Further cleaning of the population of networks produces even more centered atlases, especially for the noisy functional connectivity networks

Person-based proactivity and community relations:examining police perspectives in troubled times

Deadly encounters between police and Black men have led to public outrage and increasing scrutiny of law enforcement. In response, some law enforcement leaders have called for more proactive strategies in high-crime areas. While many have criticized oppressive examples of proactivity, such as stop-question-and-frisk, others have suggested that proactive approaches could be more effective if tailored to the needs of racial and ethnic minority residents. In this qualitative study, we explore these issues using data collected from interviews and participant observation with police officers at a Southern Police Department located near several low-income ethnic minority neighborhoods. The aim of this study is to determine how police officers interpret person-based proactivity (Such as stop-question-and-frisk), along with other self-initiated forms of person-based proactive approaches in times of increasing public scrutiny due to reported incidents of police violence. Participants expressed frustration regarding negative public sentiment, as well as the seeming futility of doing “good police work.” Many believed that the positive achievements of police were ignored by mass media. Participants were also concerned that negative publicity had discouraged officers from potentially effective forms of self-initiated proactivity. The implications for proactive policing and community-informed strategies in troubled times are discussed

The program “Cities for the future”, at the crossroads of education, communication, and technology. An articulation between museums and schools for utopian imagination

[EN] This article presents the results of the educational program “Ciudades para el futuro: crear utopías” (“Cities for the Future: creating utopias”) implemented between 2021 and 2022 jointly by the Museo Kosice and Museo Xul Solar (both in the city of Buenos Aires, Argentina), and some interrogations enabled thanks to the rethinking of the role of museums during the Covid-19 crisis. Precisely, Cities for the Future was designed during and for a context of social isolation as a result of a horizontal association between two single-artist museums and a strong collaborative articulation with other social actors (educational, artistic, technological and governmental). The aim was to establish a dialogue with a new public, transcending geographical barriers and enabling interactive and participatory access to both collections through digital technologies (Virtual Reality and 360º immersive videos), but with a focus on students’ creativity, imagination and inventiveness in school contexts. For this, a wide array of multimedia educational resources was specifically produced. We proposed a subtle shift in the institutional objectives of museums: from the acquisition, conservation, research, communication and exhibition of their heritage, to the promotion of new heritage creation, resignification and development outside its walls. In this transition –which traces a museum's journey from "the instituted" to its instituting possibilities– Cities for the Future was analytically broken down into four specific, consecutive and complementary objectives or lines of action: to bring both museums’ collections closer to new audiences outside their immediate region of influence, particularly to students from all over the country (muselogical perspective), to promote new ways of art consumption mediated by digital technology in a context of indefinite closure of museums (technological perspective), to promote school and educational activities –in person or online– where teachers and students can imagine, design and project future utopian cities with any artistic language (pedagogical perspective), and to make an audiovisual record of the whole experience, as a time capsule of the utopian imagination of the kids and youth of Argentina (communicational perspective). This article presents the results of the experience and some educational, technological, communicational and strictly museological questions about the role and digital actions of museums during the pandemic, the possibility of new ways of addressing old and new audiences and the museum-school partnership. We suggest that an educational and dialogical perspective enables the rethinking of the role of the museum as a space of creation and invention.[ES] En este artículo se presentan los resultados del programa educativo “Ciudades para el futuro: crear utopías” desarrollado entre el 2021 y el 2022 de forma conjunta por el Museo Kosice y el Museo Xul Solar (ambos en la Ciudad de Buenos Aires, Argentina), y algunos de los interrogantes que se habilitaron gracias al replanteamiento del rol de los museos durante la crisis del Covid-19.Precisamente, Ciudades para el futuro se diseñó durante y para un contexto de aislamiento social, partiendo de una asociación horizontal entre dos museos de arte monoautorales y una fuerte articulación colaborativa con otros actores sociales (educativos, artísticos, tecnológicos y gubernamentales).Se buscó establecer un diálogo con un nuevo público, trascendiendo barreras geográficas y habilitando el acceso interactivo y participativo a ambas colecciones a través de tecnologías digitales (Realidad Virtual y videos inmersivos 360º), pero con un eje centrado en la creatividad, imaginación e invención de los estudiantes en contextos escolares, produciendo para ello una diversidad de recursos pedagógicos específicos y multimediales. Se propuso un sutil deslizamiento de los objetivos institucionales de los museos: de la adquisición, conservación, investigación, comunicación y exposición de su patrimonio, a promover su creación, resignificación y desarrollo fuera de sus paredes. En este tránsito -que traza un recorrido de un museo de “lo instituido” a sus posibilidades instituyentes- Ciudades para el futuro se desgranó en cuatro objetivos (líneas de acción) específicos, consecutivos y complementarios: acercar el patrimonio de ambos museos a nuevos públicos fuera de su región, particularmente a estudiantes de todo el país (dimensión museística), promover nuevas formas de relación con la obra de arte mediada por la tecnología en un contexto de cierre indefinido de museos (dimensión tecnológica), promover el trabajo en aula -presencial o virtual- con docentes y estudiantes para imaginar, diseñar o proyectar ciudades futuras desde cualquier lenguaje artístico (dimensión pedagógica), y realizar y difundir el registro audiovisual de la experiencia, como una cápsula de tiempo de la imaginación utópica de niños y jóvenes argentinos (dimensión comunicacional).Esta comunicación presenta los resultados de la experiencia y algunos interrogantes educativos, tecnológicos, comunicacionales y estrictamente museológicos sobre el rol y acciones digitales de los museos durante la pandemia, la posibilidad de interpelar de otras maneras a viejos y nuevos públicos y la articulación museo-escuela. En este recorrido, sugerimos que una perspectiva educativa y dialógica habilita el replanteamiento del rol del museo en tanto espacio de creación e invención.Pérez Fallik, M. (2022). El programa “Ciudades para el futuro” en el cruce de la educación, la comunicación y la tecnología. Una articulación entre museos y escuelas para la imaginación utópica. En CIMED22 - II Congreso internacional de museos y estrategias digitales. Editorial Universitat Politècnica de València. 149-161. https://doi.org/10.4995/CIMED22.2022.1553914916

Dimensions and directions of perceived influence over work behaviors in relation to hierarchical level and job satisfaction

Thesis (Ph. D.)--Michigan State University. Department of Psychology,Includes bibliographical references (pages 117-120

Policing through social media:a qualitative exploration

Social media, in the last decade, had been used to hold police accountable for their actions. There has been, however, a paucity of empirical research into how law enforcement uses social media. To explore this issue, this paper uses qualitative data emerging from ethnographic research conducted in a Southern American state. Participant observations of police officer deployments were paired with semi-structured interviews with officers from three law enforcement agencies. The extent and ways that these officers used social media is explored. Findings indicate that social media is used to bring positive attention to law enforcement agencies and aid criminal investigations. While the positive impact of social media was highlighted in these experiences, persistent problems and challenges were also featured in the data. Finally, officer insights were drawn upon to make recommendations for future policing policy and research.<br/

Maestras y maestros: el primer trabajo en la escuela pública

Este libro procura extrañar la mirada y tratar de escuchar las voces de los sujetos concretos y reales que habitan en esa amplia categoría homogeneizadora constituida por los/las suplentes‐nuevos/as, en un momento particular. No son figuras extrañas al ámbito escolar, pero ocupan en el mapeo institucional un territorio apenas dibujado, transitorio, cambiante. Cómo encaran estas primeras experiencias (que dejan huellas en ellos) más que cómo enseñan, constituye el objeto de indagación en este trabajo. Cómo inician su trabajo docente, sus prácticas docentes ‐esas primeras autónomas, fuera del contexto de las prácticas de enseñanza que ejercieran durante la residencia en los establecimientos donde se formaran‐, nos habla de una perspectiva original, hasta aquí no explorada.Fil: Mateo, Rosa. Instituto de Formación Docente Nº 12 Neuquén; Argentina.Fil: Fallik, Verónica. Instituto de Formación Docente Nº 12 Neuquén; Argentina.Fil: Muneta, Miriam. Instituto de Formación Docente Nº 12 Neuquén; Argentina

Fruit Quality of Grafted Watermelon (Citrullus lanatus): Relationship between Rootstock, Soil Disinfection and Plant Stand

Grafting of vegetable transplants is a unique horticultural technology, which was adapted from the practice in perennial crops. However, rootstock/scion combinations may affect and alter the final size, yield, and quality of fruits of grafted plants, both immediately postharvest and during prolonged storage. We evaluated the effect of two rootstocks [TZ148 and Nurit (commercial Cucurbita spp. hybrids)] grafted on one scion (seedless watermelon cv. 1262) in two plant stands (2500 and 5000 plant ha-1), on plant viability, number of marketable fruits (fruits weight above 5 kg) and fruit quality after one week storage at 20°C, in non- or disinfested soil. Soil disinfection significantly improved the viability of non-grafted plants. All grafted plants significantly performed better vine vigor, with no wilt or vine decline symptoms, in either disinfested or non-treated soil, regardless of the type of the rootstock. Plant stand did not affect plant viability. The number of marketable watermelon fruits per m2 was 75 to 700% higher in grafted plants than in non-graft ed. Grafting on Nurit produced significantly more marketable fruits than grafting on TZ148. The quality of fruits harvested from grafted plants was significantly better than non-grafted fruit in both plant stands and soils. Watermelons harvested from Nurit-grafted plants had better taste and texture and almost seedless compared to control and TZ-148-grafted plant

El arte como puente. Experiencias compartidas de la 1° Jornada EPEA

The objective of this article is to present and reflect on some tensions and triggers that manifested as a result of the organization and celebration of the 1st Conference on Pedagogical Experiences of Education through Art (EPEA).&nbsp;&nbsp;El objetivo de este artículo es presentar y reflexionar sobre algunas tensiones y disparadores que se manifestaron como resultado de la organización y celebración de la 1° Jornada de Experiencias Pedagógicas de Educación a través del Arte (EPEA).O objetivo deste artigo é apresentar e refletir sobre algumas tensões e gatilhos que se manifestaram a partir da organização e celebração do 1º Encontro de Experiências Pedagógicas de Educação pela Arte (EPEA).&nbsp

Effect of 1-methylcyclopropene on the antioxidant capacity and postharvest quality of tomato fruit

Tomato fruits ‘1402’ were harvested at mature green (MG), light pink (LP) and light red (LR) stages and treated with 0.3 μL L-1 of 1-methylcyclopropene (1-MCP) at 20°C for 24 h to investigate the ability to retard tomato fruit ripening. The treated and control fruit were stored at 5°C and 12 oC for 14 days and a further 4 days at 20oC for a shelf life period. The results show that the effects of 1-MCP on fruit ripening were related to the stage of maturity and storage temperature. The MG stage was the optimal stage for 1-MCP treatment when fruit storage was at 12°C. 1-MCP treatment reduced the lipophilic antioxidant activity (LAA) of the tomato fruit, but the hydrophilic antioxidant activity (HAA) remained similar to that observed at harvest. 1-MCP is a potential tool for extending shelf life, delaying tomato fruit ripening (slowing color development and firmness loss) and enhancing quality of tomatoes.Keywords: Tomato, 1-MCP, storage, stage of maturity, temperatureAfrican Journal of Biotechnology Vol. 12(6), pp. 547-55

Person-Based Proactivity and Community Relations: Examining Police Perspectives in Troubled Times

Deadly encounters between police and Black men have led to public outrage and increasing scrutiny of law enforcement. In response, some law enforcement leaders have called for more proactive strategies in high-crime areas. While many have criticized oppressive examples of proactivity, such as stopquestion- and-frisk, others have suggested that proactive approaches could be more effective if tailored to the needs of racial and ethnic minority residents. In this qualitative study, we explore these issues using data collected from interviews and participant observation with police officers at a Southern Police Department located near several low-income ethnic minority neighborhoods. The aim of this study is to determine how police officers interpret person-based proactivity (Such as stopquestion- and-frisk), along with other self-initiated forms of person-based proactive approaches in times of increasing public scrutiny due to reported incidents of police violence. Participants expressed frustration regarding negative public sentiment, as well as the seeming futility of doing “good police work.” Many believed that mass media ignored the positive achievements of police. Participants were also concerned that negative publicity had discouraged officers from potentially effective forms of selfinitiated proactivity. The implications for proactive policing and community-informed strategies in troubled times are discussed