The Vacuum Chamber of the GANIL SSC

http://accelconf.web.cern.ch/AccelConf/c78/papers/a-14.pdfInternational audienc

Examining the Effects of Model-Based Inquiry on Conceptual understanding and Engagement in Science

Model-Based Inquiry (MBI) is an instructional model which engages students in the scientific practices of modeling, explanation, and argumentation while they work to construct explanations for natural phenomena. This instructional model has not been previously studied at the community college level. The purpose of this study is to better understand how MBI affects the development of community college students’ conceptual understanding of evolution and engagement in the practices of science. Mixed-methods were employed to collect quantitative and qualitative data through the multiple-choice Concepts Inventory of Natural Selection, student artifacts, and semi-structured interviews. Participants were enrolled in Biology Concepts, an introductory class for non-science majors, at a small, rural community college in the southwestern United States. Preliminary data shows that conceptual understanding is not adversely affected by the implementation of MBI, and that students gain valuable insights into the practices of science. Specifically, students who participated in the MBI intervention group gained a better understanding of the role of models in explaining and predicting phenomena and experienced feeling ownership of their ideas, an appropriate depth of thinking, more opportunities for collaboration, and coherence and context within the unit. Implications of this study will be of interest to postsecondary science educators and researchers who seek to reform and improve science education

Las 5Cs de Desarrollo Positivo Juvenil y el Propósito Vital entre Adolescentes de las Minorías Romaní y Egipcia en Albania

The 5Cs model of Positive Youth Development focuses on thriving adolescents who develop positive qualities, which are known to help them deal with challenges, tasks, and psychological concerns. Life Purpose acts as a protective factor in relation to the general well-being of adolescents and supports the 5Cs through this process of growth. The aim of this study is to examine the role of the 5Cs of PYD, namely Competence, Confidence, Connection, Caring, and Character, and how Life Purpose is explained by the 5Cs. There is no precedent study on the 5Cs model of positive youth development in Albania. In specific, this study investigated the 5Cs of PYD for the two most marginalized minority groups in Albania, the Roma, and Egyptian communities. Data were collected from 201 participants from the three most populated cities with Roma minority (N=100) and Egyptian minority (N=101), aged between 14-20 years old. Association between the 5Cs and purpose in life was found. Life Purpose has an association with Character, Caring, and Connection. In interaction with 5Cs, Life Purpose provides a framework for systematic behavior in life by motivating adolescents to plan and make efforts to achieve in decision-making and performance.El modelo de las 5 Cs de Desarrollo Positivo Juvenil se enfoca en adolescentes que desarrollan cualidades positivas, que les ayudan a enfrentarse a los desafíos, tareas y preocupaciones psicológicas. El propósito vital actúa como factor protector en relación con el bienestar general de los adolescentes y apoya a las 5Cs a través de este proceso de crecimiento. El objetivo de este estudio es examinar el papel de las 5 Cs de Desarrollo Positivo Juvenil, es decir, Competencia, Confianza, Conexión, Cariño y Carácter, y cómo estas 5 Cs explican el propósito vital. No existe un estudio precedente sobre el modelo 5Cs de desarrollo juvenil positivo en Albania. En concreto, este estudio investigó las 5Cs para los dos grupos minoritarios más marginados de Albania, las comunidades romaní y egipcia. Se recogieron datos de 201 participantes de las tres ciudades más pobladas con minoría romaní (N=100) y minoría egipcia (N=101), con edades comprendidas entre los 14 y los 20 años. De los 201 participantes, el 53% de las participaciones fueron chicos y el 48% chicas. En cuanto a su estado civil, sólo el 12% estaba casado/a. Los hallazgos muestran relaciones significativas entre las 5Cs y su edad, etnia, sexo, niveles de educación y condiciones de vida. Se encontró una asociación entre las 5 Cs y el propósito en la vida. El propósito vital tiene una asociación con el carácter, el cariño y la conexión. En interacción con las 5Cs, el propósito vital proporciona un marco para el análisis sistemático de la conducta al motivar a los adolescentes a planificar y hacer esfuerzos para lograr una mejor toma de decisiones y desempeño

GANIL RF system

International audienceNot availabl

Doing STEM : students’ participation and experiences in argument-driven engineering

Recent trends in science, technology, engineering, and mathematics (STEM) education have shifted the focus of education onto practice-based learning. Specifically, A Framework for K-12 Science Education (National Research Council [NRC], 2012) and the Next Generation Science Standards (NGSS Lead States, 2013) encourage opportunities for students to engage in science and engineering practices (SEPs) with the goal of more meaningful participation and engagement in authentic STEM experiences for all students. Importantly, this includes the integration of engineering into K–12 science education to increase equitable access to engineering (Committee on Integrated STEM Education, National Academy of Engineering [NAE], & NRC, 2014), especially for students from historically excluded groups such as girls and students of color (Commission on the Advancement of Women and Minorities in Science, Engineering, and Technology Development, 2000; Geisinger & Raj Raman, 2013). This dissertation consists of three studies that explore the engagement and experiences of middle school students as they participate in Argument-Driven Engineering (ADE; Baze et al., 2018; Hutner et al., 2019), an instructional framework for integrating engineering into science curricula, with a focus on feminism and the unique experiences of girls. The first two studies are qualitative explorations into the epistemic criteria that student groups use when designing solutions to problems and student groups’ enactment of epistemic agency. My findings between these studies suggest that students take up meaningful roles for building knowledge and designing solutions and possess nascent epistemic abilities, and that equitable participation and shared epistemic agency was guided by the intentional effort of girls. The third study is a mixed-methods analysis of students’ engineering identities over a school year and the salient experiences which influence engineering identity. My findings suggest that authentic engineering experiences positively affect engineering identity but increasing the engineering experiences students have in school is not enough to close the gendered identity gap. Together, this work has implications around the implementation of ADE and other integrated STEM instruction, in particular, that engineering instruction should explicitly address real-world issues of social and environmental justice in order to support the engineering work of all students (e.g., Godwin & Potvin, 2015; NAE, 2008).Curriculum and Instructio

Radiation and shielding study for the International Ultraviolet Explorer

Technical advisory services to ensure integrity of parts and material exposed to energetic particle radiation for the IUE scientific instruments, spacecraft, and subsystems are provided. A significant potential for interference, degradation, or failure for unprotected or sensitive items was found. Vulnerable items were identified, and appropriate tests, changes, and shields were defined

Relações da leitura e escrita no processo de produção do conhecimento : caminhos para formação continua de professores das series iniciais do ensino fundamental

Orientador Ezequiel Theodoro da SilvaTese (doutorado) - Universidade Estadual de Campinas, Faculdade de EducaçãoDoutorad

Infectious SIV resides in adipose tissue and induces metabolic defects in chronically infected rhesus macaques

Additional file 1. General method for isolation of stromal-vascular-fraction (AT-SVF) cells from adipose tissue of rhesus macaques, and subsequent analyses. (A) 30-60 mins collagenase digestion of solid adipose tissue samples from rhesus macaques is followed by washing and centrifugation, allowing for separation of mature adipocytes (floater fraction) from the stromal-vascular-fraction (AT-SVF) cells. AT-SVF cells were then analyzed by flow cytometry, nested PCR, and viral outgrowth assays, and floater fraction adipocytes analyzed for mRNA expression. (B) Sample flow cytometry gating schemes for examination of AT-SVF T cells, NKT cells, macrophages, and B cells