Testing the Tube Super-Dielectric Material Hypothesis: Increased Energy Density Using NaCl

The article of record as published may be found at http://dx.doi.org/10.1007/s11664-016-4843-4The focus of the present work is the evaluation of the low-frequency dielectric performance of titanium dioxide nanotube arrays, created by anodization, filled with aqueous NaCl solutions. At low frequency (ca.<10¯² Hz), capacitors made up of this so-called tube super-dielectric material were found to have extreme dielectric constants, greater than 1 billion. The same capacitors also registered unprecedented energy densities, nearly 400 J/cm³ better than that observed (<250 J/cm³) for the same type of anodized titania filled with an aqueous solution of NaNO₃, and about an order of magnitude better than commercial supercapacitors. Sufficient data were collected to propose a correlation relating dielectric thickness and salt concentration to overall energy density

Tube-Super Dielectric Materials: Electrostatic Capacitors with Energy Density Greater than 200 J cm ˉ³

The article of record as published may be found at http://dx.doi.org/10.3390/ma8095301The construction and performance of a second generation of super dielectric material based electrostatic capacitors (EC), with energy density greater than 200 J cm ˉ³, which rival the best reported energy density of electric double layer capacitors (EDLC), also known as supercapacitors, are reported. The first generation super dielectric materials (SDM) are multi-material mixtures with dielectric constants greater than 1.0 10⁵, composed of a porous, electrically insulating powder filled with a polarizable, ion-containing liquid. Second-generation SDMs (TSDM), introduced here, are anodic titania nanotube arrays filled with concentrated aqueous salt solutions. Capacitors using TiO₂ based TSDM were found to have dielectric constants at ~0 Hz greater than 10⁷ in all cases, a maximum operating voltage of greater than 2 volts and remarkable energy density that surpasses the highest previously reported for EC capacitors by approximately one order of magnitude. A simple model based on the classic ponderable media model was shown to be largely consistent with data from nine EC type capacitors employing TSDM.US Navy (Naval Research Program, Project: P14-0463)US Marine Corps (Expeditionary Energy Office)US Navy (Naval Research Program, Project: P14-0463)US Marine Corps (Expeditionary Energy Office

Estudio de la tendencia investigativa de las prácticas de sostenibilidad corporativa desde el enfoque de control de gestión

El estudio tiene el propósito de realizar un análisis de la tendencia investigativa de las prácticas de sostenibilidad corporativa desde el enfoque de control de gestión, examinando desde una perspectiva analítica los aportes de diferentes autores con respecto al comportamiento de las organizaciones en cada una de sus áreas de desempeño y, además, su compromiso con la implementación de medidas que incluyan mejores prácticas sostenibles con un alto grado de control en su gestión. Metodológicamente este estudio es de carácter cualitativo, descriptivo y documental recolectando información principalmente de la base de datos bibliográfica scopus, realizando análisis bibliométrico y cienciométrico, mediante el cual se estableció una tendencia con crecimiento exponencial respecto a la importancia de la sostenibilidad corporativa y su impacto social. En este sentido, el estudio permitió identificar las líneas futuras de investigación de las prácticas de sostenibilidad corporativa desde el enfoque de control de gestión, hacía la incursión en el tema del desarrollo sostenible con cada una de sus características y su aplicabilidad en las organizaciones.The purpose of the study is to carry out an analysis of the investigative trend of corporate sustainability practices from a management control perspective, examining from an analytical perspective the contributions of different authors regarding the behavior of organizations in each of their areas. Of performance and, in addition, its commitment to the implementation of measures that include sustainable best practices with a high degree of control in its management. Methodologically, this study is qualitative, descriptive and documentary in nature, collecting information mainly from the Scopus bibliographic database, where bibliometric and scientometric analyzes are carried out, establishing a trend with exponential growth regarding the importance of corporate sustainability and its Social impact. In this sense, the study allowed us to identify future lines of research on corporate sustainability practices from a management control perspective, making an incursion into the topic of sustainable development with each of its characteristics and its applicability in organizations.Resumen -- Abstract -- Introducción -- Marco referencial -- Marco Teórico -- Prácticas de sostenibilidad corporativa -- Control de Gestión -- Prácticas de sostenibilidad corporativa desde el enfoque de control de gestión -- Objetivos -- Metodología -- Resultados -- Prácticas de sostenibilidad corporativa desde el enfoque de control de gestión -- Estado referencial de las prácticas de sostenibilidad corporativa desde el enfoque de control de gestión a través de una revisión bibliométrica. -- Líneas de futuras investigaciones en la práctica de sostenibilidad corporativa desde el enfoque de control de gestión -- Conclusiones -- Referencias bibliográfica

Analysing the charged scalar boson contribution to the charged-current BB meson anomalies

Experimental measurements collected by the BABAR, Belle, and LHCb experiments on different observables associated with the semileptonic transition $b \to c \tau \bar{\nu}_\tau$, indicate the existence of disagreement respect with the Standard Model predictions. We analyse the charged scalar boson contributions to these charged-current $B$ meson anomalies within the framework of two Higgs doublet model with the most general Yukawa couplings to quarks and leptons from the third generation, involving left-handed and right-handed (sterile) neutrinos. We perform a phenomenological study of the Yukawa couplings parameter space that accommodates these anomalies. We consider the most recent data from HFLAV world-average and Belle combination, and the upper limits ${\rm BR}(B_c^- \to \tau^- \bar{\nu}_{\tau}) < 30\%$ and $10\%$. In addition, we include in our study the prospect measurements on $R(D^{(\ast)})$ that the Belle II experiment could achieve and explore, for the first time, the future implications for the corresponding charged scalar Yukawa couplings. This analysis updates the existing literature and includes new important observables. Our results show that current experimental $b\rightarrow c \tau \bar{\nu}_\tau$ data and Belle II projection favor the interpretation of a charged scalar boson interacting with right-handed neutrinos. Furthermore, as a side analysis regarding the charged scalar boson interpretation, we revisit the relation between $R(D^\ast)$ and ${\rm BR}(B_c^- \to \tau^- \bar{\nu}_{\tau})$ by investigating whether the claim that pseudoscalar new physics interpretations of $R(D^{\ast})$ are implausible due to the $B_c$ lifetime is still valid, to the light of the recent data and Belle II prospects on $R(D^{\ast})$. Lastly, we reexamine addressing the $R(D^{(\ast)})$ anomalies in the context of the 2HDM of Type II.Comment: 20 pages, 5 figures (14 plots), 7 Tables. V3: typos corrected, discussion improve

Speaking activities and pegagogical strategies to promote oral participation among fifth grade introverted students

El siguiente proyecto llamado “actividades de habla y estrategias pedagógicas para promover participación oral entre estudiantes introvertidos de quinto grado” es un estudio descriptivo e interpretativo de caso que usa como métodos de investigación( diarios investigativos, observaciones y entrevistas) con el objetivo de diagnosticar e interpretar situaciones dentro del aula de clase en relación a estrategias y actividades orales implementadas por los investigadores para promover participación oral entre los participantes. Este estudio se llevo a cabo en la ciudad de Pereira Colombia, cuyo enfoque educativo actual se relaciona con el desarrollo e implementación de un plan educativo de bilingüismo en instituciones educativas públicas. La escuela en la cual se desarrolló el estudio es una institución educativa pública llamada el “Pueblito” la cual tiene un acuerdo con la universidad de Pereira para que sus practicantes dicten clases de Inglés a los estudiantes y de esta manera generar un mayor nivel académico en esta área. Para fundamentar las bases de esta investigación se tomaron en cuenta una serie de autores y teorias relacionadas con el rol de la personalidad en el desarrollo de participación oral, y tipos de actividades para promover participación en este campo y la relación de esta con los estudiantes introvertidos. Los resultados encontrados en este estudio estan enfocados a dar respuestas a las siguientes preguntas de investigación: ¿Qué nos dicen las actividades de habla implementadas a estudiantes de quinto grado en un colegio publico de Pereira acerca de la participación oral en Ingles de estudiantes introvertidos? de igual manera. ¿Qué estrategias pedagógicas pueden ser consideradas para diseñar e implementar actividades orales que generen participación en inglés en un grupo de grado quinto en una escuela pública de Pereira que presenta estudiantes introvertidos? Los hallazgos encontrados en esta investigacion estan enfocados en lo siguiente: tipos de actividades usadas para promover participación oral entre estudiantes introvertidos, estrategias pedagógicas utilizadas para promover participación oral y sus respectivas sub-categorías.This research study titled “speaking activities and pedagogical strategies to promote oral participation among 5th grade introverted students” is a descriptive and interpretative case study. To respond to the reaserch questions three methods were used during the investigation. (Interview, observations and journals). The objective is to diagnose and analize the current situation, implement speaking activities and strategies to generate oral participation among introverted students. The current study took place in Pereira, Colombia where a plan of bilingualism is being carried out; therefore, there is a strong interest in the pedagogical procesess, methods, and approaches in relation to foreign language teaching. The educational institution were this investigation took place goes by the name of “El pueblito”. This primary school has an agreement of bilingualism with the University of Pereira. In order to build the bases of this thesis project and analyze data, various points of view will be mentioned by related authors that are involved in the field of personalty factors in learning, the role of speaking activities in EFL and the relationship it has with introverted language students. The results provided by the findings in this study are guided towards answering the following research questions: what do speaking activities proposed for a 5th grade course from a public Pereira school tells us about introverted student’s English oral participation? What pedagogical strategies should be considered when designing and implementing speaking activities for a 5th grade Pereira public school group with introverted students? The findings found in this project are the following type of speaking activities used to promote oral participation, Pedagogical strategies fostered oral participation among introverted participants and it respected sub categories

Diferencias metodológicas existentes entre un docente licenciado y un docente no licenciado en el proceso de enseñanza-aprendizaje en la asignatura de informática educativa del programa Licenciatura en Comunicación e Informática Educativa de la Universidad Tecnológica de Pereira

El momento en que se empieza a pensar la educación como un factor imprescindible para el proceso socializador, surgen teorías que intentan analizar y comprender el proceso por el cual una persona aprende; por esta razón, el estudio de los elementos que están relacionados con la educación, se transforman en un principio fundamental el cual pretende formar de una manera integral. Dicha formación se estructura en una institución llamada escuela en donde se empieza a planificar, sistematizar, integrar y promocionar el aprendizaje de los ciudadanos que conforman la sociedad. A partir de lo anterior nacen diversas investigaciones que pretenden integrar disciplinas como: la pedagogía, la psicología, la filosofía entre otras, con el fin de buscar, analizar y reflexionar el proceso por el cual aprendemos

Organizaciones Criminales, proceso de apropiación de negocios legales e ilegales en las ciudades Casos Medellín y Tumaco

Investigación cualitativa en la que se pretende comprender las implicaciones sociales y las relaciones de la multiplicidad de actores que se ven afectados dentro de las lógicas del comportamiento de los grupos armados nacidos después del proceso de desmovilización de los grupos paramilitares en las ciudades de Tumaco y Medellín. Este estudio por ende, analizará este proceso a la luz de los fallos que tuvo, estableciendo que estos grupos emergieron con el fin de capturar rentas de tipo legal e ilegal, realizando alianzas políticas locales y regionales, además de toda una estructura armada para consolidar su funcionamiento en las urbesQualitative research that aims to understand the social implications and relationships of the many actors that are affected within the logical behavior of armed groups born after the demobilization of paramilitary groups in the cities of Medellin and Tumaco. This study therefore analyzed this process in light of the failures that had it, establising that these groups emerged with the aim of capturing rents legal and illegal kind, making local and regional political alliances , and a whole army structure to consolidate its operating in citiesPolitólogo (a)Pregrad

Probing the limits of correlations in an indivisible quantum system

We employ a trapped ion to study quantum contextual correlations in a single qutrit using the 5-observable Klyachko,Can,Binicio˘glu,andShumovskyinequality,whichisarguablythemostfundamentalnoncontextuality inequality for testing quantum mechanics (QM). We quantify the effect of systematics in our experiment by purposely scanning the degree of signaling between measurements, which allows us to place realistic bounds on the nonclassicality of the observed correlations. Our results violate the classical bound for this experiment by up to 25 standard deviations, while being in agreement with the QM limit. In order to test the prediction of QM that the contextual fraction increases with the number of observables, we gradually increase the complexity of our measurements from 5 up to 121 observables. We find stronger-than-classical correlations in all prepared scenarios up to 101 observables, beyond which experimental imperfections blur the quantum-classical divide

Tube-Super Dielectric Materials: Electrostatic Capacitors with Energy Density Greater than 200 J¨cm´3

Abstract: The construction and performance of a second generation of super dielectric material based electrostatic capacitors (EC), with energy density greater than 200 J¨cm´3, which rival the best reported energy density of electric double layer capacitors (EDLC), also known as supercapacitors, are reported. The first generation super dielectric materials (SDM) are multi-material mixtures with dielectric constants greater than 1.0ˆ10 5 , composed of a porous, electrically insulating powder filled with a polarizable, ion-containing liquid. Second-generation SDMs (TSDM), introduced here, are anodic titania nanotube arrays filled with concentrated aqueous salt solutions. Capacitors using TiO 2 based TSDM were found to have dielectric constants at~0 Hz greater than 10 7 in all cases, a maximum operating voltage of greater than 2 volts and remarkable energy density that surpasses the highest previously reported for EC capacitors by approximately one order of magnitude. A simple model based on the classic ponderable media model was shown to be largely consistent with data from nine EC type capacitors employing TSDM