Promoting pre-experimental activities in high-school chemistry: focusing on the role of students' epistemic questions

In high-school chemistry the pre-experimental phase of inquiry cycles often remains neglected. According to a procedural model, which is described in the text, this phase begins with an observation which stimulates students’ prior factual knowledge, the formulation of a research question for further elaboration (epistemic questions), the anticipation of a hypothetical answer, and the planning of experimental steps for deciding on the hypothetical answer. These activities were explicitely prescribed in an experimental group of 28 tenth-graders. Raising the quality of students’ epistemic research questions by providing structured help was a special focus of the intervention. Hypothesized motivational and cognitive effects were measured and compared to a group of 25 students (control group) who engaged in non-structured pre-experimental activities. The intervention provided to the experimental group resulted in stronger preferences for a more open and non-recipe type of experimentation, in more intense cognitive activities (thoughts) and, most importantly, in increased skills for formulating causal epistemic questions. Supporting such procedural skills in classrooms may contribute to transforming labwork into intentional activities and students into active learners by helping them focus on further elaborating their knowledge

Agency, inclusion, and empathy as power: The last dispatch from my MA in Engagement Journalism (and my Final Report)

My community practicum engaged New York\u27s intellectually and developmentally disabled community, and their families, in the process of making the process of reporting abuse and neglect inside group homes more accessible and transparent. Serious abuse and neglect still happens in group homes for people with disabilities, which has led to death and serious injury, and reporting issues is not necessarily easy. After a year of listening to community concerns, I created a service journalism post that made reporting abuse and neglect easier for families and the public. And most prominently, I created How to Stand Up for Yourself in Your Home, an accessible self-advocacy guide that has been and will be distributed to group home residents across the state. It has been translated into plain language and delivered to residents however they best receive information. My final Medium post is here: https://jacquineber.medium.com/agency-inclusion-and-empathy-as-power-the-last-dispatch-from-my-ma-in-engagement-journalism-ba91abfc07

Integración de las TIC y la gestión operativa de la municipalidad de Barranco, 2022

La presente tesis tiene como objetivo determinar la relación entre la integración de las TIC y la gestión operativa de la municipalidad de Barranco, 2022. Con enfoque cuantitativo a discernimiento de tipo básica, su diseño fue no experimental transversal. La muestra fue de 96 trabajadores y se recogió la información mediante encuesta validado por opinión de 03 expertos, quienes determinaron la validez. Los resultados determinaron que, el 70 % de los trabajadores perciben que hay un nivel bajo de integración TIC y 72 % perciben que hay una débil gestión operativa. Existe una correlación positiva moderada entre la integración de la TIC y la gestión operativa de 0.643, debido a que presenta un p valor (sig.) de 0.00, el cual es menor al valor (sig.) critico específica a un nivel de confianza del 95%. Llegando a la conclusión que existe una relación positiva moderada entre los sistemas de información y la gestión operativa de 0.434, a su vez existe una relación positiva moderada entre el equipamiento y la gestión operativa de 0.664; esto es debido a que presenta un p valor (sig.) de 0.00, el cual es menor al valor (sig.) critico específica a un nivel de confianza del 95%.Lima NorteEscuela de PosgradoReforma y Modernización del EstadoDesarrollo sostenible, emprendimientos y responsabilidad social.Fortalecimiento de la democracia, ciudadanía y cultura de pazCiudades y comunidades sostenible

Influencia en el modulo de rotura del concreto usado en pavimentos rígidos con el uso de aditivos colorantes de origen mineral

La presente Tesis proyecto a nivel de Ingeniería y su aplicación real en laconstrucción de los servicios del “INFLUENCIA EN EL MODULO DEROTURA DEL CONCRETO USADO EN PAVIMENTOS RIGIDOS CONEL USO DE ADITIVOS COLORANTES DE ORIGEN MINERAL”. ¿Cuál será la influencia del uso de aditivos colorantes de origen mineral en el módulo de rotura de concreto utilizado en Pavimentos Rígidos? El método de ensayo con la norma ASTM C39/C39M-18 para resistencia a la compresión de especímenes cilíndricos de concreto en la obra y NTP 339.078-2012 (Método de ensayo para determinar la resistencia a la flexión del concreto en vigas simplemente apoyadas con cargas a los tercios del tramo) donde se realizó las pruebas de compresión a las probetas de concreto sin colorante, y de ahí se realizó los ensayos a flexión con las vigas de concreto sin colorante y sin refuerzo, luego se le aplico en diferentes proporciones con 03 tipos de colorantes con respecto al peso de cemento que se le adiciona a la mezcla, para ver la correlación que existe entre la resistencia cilíndrica del concreto y el módulo de rotura con respecto a la cantidad de colorante que se le adicione a la mezcla . Como resultado se obtuvo que en promedio la resistencia a la compresión del concreto aumenta en 86% para contenidos del 4% de colorante mineral y también se obtuvo que en promedio para el módulo de rotura disminuye 8% para contenidos de 3% colorante mineral.The present Thesis I project to level of Engineering and his royal application in the construction of the services of ""INFLUENCES IN THE MODULE OF BREAK OF THE CONCRETE ONE USED IN RIGID PAVEMENTS WITH THE USE OF ADDITIVES COLOURINGS OF MINERAL ORIGIN"". Which will be the influence of the use of additives colourings of mineral origin in the module of break of concretly used in Rigid Pavements? The testing method with the norm ASTM C39/C39M-18 for resistance to the compression of cylindrical specimens of I make concrete in the work and NTP 339.078-2012 (Testing method to determine the resistance to the flexion of the concrete one in girders simply supported with loads the thirds of the section) where the tests of compression were realized to the manometers of concretly without colouring, and of there the tests were realized to flexion by the girders of concretly without colouring and without reinforcement, then I apply him in different proportions with 03 types of colourings with regard to the cement weight that adds him to the mixture, to see the correlation that exists between the cylindrical resistance of the concrete one and the module of break with regard to the quantity of colouring that adds him to the mixture. Since result obtained that in average the resistance to the compression of the concrete one increases in 86 % for contents of 4 % of mineral colouring and also there was obtained that in average for the module of break it diminishes 8 % for contents of 3 % mineral colouring.Tesi

Fostering collaborative knowledge construction with visualization tools

This study investigates to what extent collaborative knowledge construction can be fostered by providing students with visualization tools as structural support. Thirty-two students of Educational Psychology took part in the study. The students were subdivided into dyads and asked to solve a case problem of their learning domain under one of two conditions: 1) with content-specific visualization 2) with content-unspecific visualization. Results show that by being provided with a content-specific visualization tool, both the process and the outcome of the cooperative effort improved. More specifically, dyads under that condition referred to more adequate concepts, risked more conflicts, and were more successful in integrating prior knowledge into the collaborative solution. Moreover, those learning partners had a more similar individual learning outcome

Experimental Study of the Energy and Exergy performance for a Pressurized Volumetric Solar Receiver

This document is the Accepted Manuscript of the following article: Jianqin Zhu, Kai Wang, Guoqing Li, Hongwei Wu, Zhaowu Jiang, Feng Lin, and Yongliang Li, 'Experimental study of the energy and exergy performance for a pressurized volumetric solar receiver', Applied Thermal Engineering, Vol. 104, July 2016, pp. 212-221. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. The Version of Record is available online at doi: https://doi.org/10.1016/j.applthermaleng.2016.05.075. © 2016 Elsevier Ltd. All rights reserved.This article presents an experimental investigation of the heat transfer characteristics as well as energy and exergy performance for a pressurized volumetric solar receiver under variable mass flow rate conditions. During a two-hour period of continuous operation in the morning, the solar irradiance is relatively stable and maintained at approximately 600 W/m2, which is beneficial for analyzing the energy and exergy performance of the solar receiver. Experimental results show that the mass flow rate fluctuation has insignificant effect on the solar receiver outlet temperature, whereas the mass flow rate plays an important role in the solar receiver power, energy efficiency and exergy efficiency. The efficiency of the solar receiver is normally above 55% with the highest efficiency of 87%, and under steady state operating conditions the efficiency is maintained at approximately 60%. A very low value of the heat loss factor (0.014 kW/K) could be achieved during the current steady state operating conditions. The highest exergy efficiency is approximately 36%. In addition, as the temperature difference increases, the impact of the exergy factor increases. The highest exergy factor is 0.41 during the entire test.Peer reviewe

Cytochrome-P450 enzymes and autoimmunity: expansion of the relationship and introduction of free radicals as the link

The Cytochrome-P-450 enzymes (CYP) are among the most important xenobiotic-metabolizing enzymes, which produce reactive oxygen species (ROS) as the result of metabolizing xenobiotics

Alkylwanderungen bei Sextettumlagerungen

Die Wanderungstendenzen von Alkylgruppen bei der Beckmann- Criegee- und Isonitril-Nitril-Umlagerung werden untersucht. Aus den relativen Reaktionsgeschwindigkeiten der substituierten Benzylreste werden Rückschlüsse auf die Ladungsverteilung im Übergangszustand dieser Reaktionen gezogen und aus dem Verhältnis der Wanderungstendenzen des exo und endo- 2- Norbornylrestes auf die Geometrie der wandernden Gruppe im Übergangszustand. Der in verschiedenen Sextettumlagerungen unterschiedliche Einfluß der -Methylverzweigung in der wandernden Gruppe wird interpretiert