Emílio José Montero Arruda Filho

A proposal for benchmarking 235U nuclear data

Abstract Two experiments performed at the IPEN/MB-01 reactor are suggested to serve as a benchmark problem to verify mainly the adequacy of the 235U nuclear data for criticality analyses and for the isothermal reactivity coefficient determination of thermal reactors. The experiments are claimed to be well-defined, and they are suitable for a benchmark problem partially due to their small uncertainties and partially due to the lack of any sort of calculated correction factors or any quantity that comes either from the calculational methodologies or from another experiment. The isothermal experiment fulfills a specific need to introduce a reactor response that is sensitive to the 235U cross-section shape below 5 meV. This feature could be accomplished due mainly to the very precise control bank system characteristics of the IPEN/MB-01 reactor. The MCNP-4B calculational analyses reveal that the most recent 235U evaluation (Leal-Derrien-Larson’s evaluation) incorporated in ENDF/B-VI release 5 performs well in the theory-experiment result comparisons of the aforementioned experiments. Particularly in the isothermal experiment, ENDF/B-VI release 5 produces results that even considering the deviations inherent to the Monte Carlo method meet the desired accuracy (±1.0 pcm/°C) for the isothermal reactivity coefficient determination in contrast to the JEF-2.2 and JENDL-3.2 libraries, which produce unacceptably high keff results. The main reasons are the 235U nuclear data in the case of JEF-2.2 and the nuclear data of both 235U and iron in the case of JENDL-3.2.

O comportamento do consumidor tecnológico diante dos valores ecologicamente corretos: ideologia verde versus responsabilidade social

The present article intends to show a brief analysis about the technological consumers perception concerning the new products which integrates the ecological factor in Brazil. For being a new concept and hardly explored, we are able to perceive the importance of studying about ideology and social responsibility in the discourse used by users of high-tech devices (cellphones, netbooks and others). Therefore, a qualitative research was perfomed with Brazilian consumers using netnography as a method, wich consists in the extraction of reports about the explored theme from specialized blogs/websites, in order to decode and categorize the groups that take part in this subject. The research resulted in six differents categories of known consumers, exposing some implied subcategories according to the green products integrated. Based on that, marketing professionals may use this comprehension when intending to launch new products and develop new devices, aiming to increase the perception of market values, sales, among others, to better understand the target audience and their consumers preferences.

Preferências hedônicas e justificações utilitárias na introdução de novos produtos de alta tecnologia

Fast technological upgrading attracts the development of new products in the market, converging into multiples uses and accesses, which has been presentedin the literature of new product development and systems integration. Due to their confront, this research places its study focus on the determinants of consumer preference for high technology product launch. The hedonic / social utility of the all-in-one products has a priority in utilitarian factors. The main objective of this work is to evaluate which factors influence the consumer preference of high technology users, using the

COMPORTAMENTO UTILITÁRIO/HEDÔNICO DO CONSUMIDOR TECNOLÓGICO: E-COMMERCE COMO AMBIENTE DA ESCOLHA

Este estudo tem como objetivo realizar uma analise sobre a preferencia dos consumidores via internet, focando em produtos tecnologicos integrados de acordo com caracteristicas utilitarias e hedonicas / sociais no uso da ferramenta e-commerce. Para tanto foi desenvolvido uma pesquisa quantitativa atraves da criacao de cenarios em uma matriz 2x2 (marca alta/baixa x preferencia hedonista/utilitarista), tendo, portanto quatro questionarios com diferentes cenarios e as mesmas indagacoes, onde cada respondentes teria acesso a apenas um questionario. O objeto de estudo para analise foi o dispositivo de leitura digital conhecido com e-reader , o qual integra diversos servicos e dispositivos em sua estrutura convergente. O estudo propoe que quando se aumenta a integracao de servicos, aumenta-se o valor hedonico e utilitario dos produtos em compras realizadas via e-commerce, complementando com a predicao de uso, a qual devera aumentar com a percepcao de diversao no processo de compra e do tipo de produto.

Consumer behavior regarding wearable technologies: Google Glass

Purpose This purpose of this study is to analyze consumer behavior in relation to Google Glass. The study considers the adoption and diffusion of the innovation, aspects related to technological convergence and the theories of utilitarian, hedonic and social value. Design/methodology/approach This qualitative, exploratory study uses the methodological approach of netnography via passive observation. Data collection was conducted using the social network Reddit over a period of about four months. Findings Three categories and two subcategories of consumers were found, namely, socially satisfied; socially constrained; and early adopters, divided into enthusiasts and visionaries. Research limitations/implications A limitation of this research pertains to the data collected regarding consumption preferences of users and potential adopters. No questions were created, but rather, discussions were selected, from the social network Reddit, that focused on factors pertaining to the theories studied. Practical implications The research brings an important insight regarding the launch of new products: to obtain a good market position for new devices, failures or inadequate perceptions that will negatively impact the technology’s dissemination must be minimized. Social implications This study presents social value of technological consumption as a function of the conspicuousness, status and position of users who own devices that differ from those commonly available on the market. Originality/value This study reveals which elements exert the greatest influence on intention to consume so-called wearable technology. In particular, it analyzes consumer behavior in relation to Google Glass, evaluating the reasons that were perceived as positive and negative for consumers which blocked the technology launch in the market.

Facebook “verde amarelo” e preferência de uso da rede para os brasileiros

The social network Facebook comprises a large web users worldwide, corresponding to approximately 1,4 billions of users. The Brazil is the second most visited site by Internet users and the preferred network among those who seek interaction, sociability and entertainment. In this context, the object of the study was to analyse the usability of Facebook among brazilians users in online environments, given that intense connection share content and range of information available on the organizations website. Two complementary qualitative methods were developed, with the first based on netnographic research and the second applying questionnaires via Facebook and email. Results show seven (7) categories of users that emphasize the different behaviors of use and treat the values that stimulate or repress the usability. In this context, these groups of users open approaches to the various possibilities of organizations to reach consumers generating insights for marketing.

Usability and use reference in the social network facebook: a netnographic analysis of technological users

This article presents a study about the preference of use in virtual social networks, using Facebook as object of study, to identify the motivational factors for the usability of this technology platform. The social network Facebook has been chosen to present a technological scenario of high sociability and virtual interaction. The methodology used was the netnography, being made through the collection of discussions in North American sites of news and forums online, where there is a large critical user participation on the internet, about the gains and frustrations in this context. The content analysis was performed comparing the categories of users found in the literature about values that motivate consumer technology, describing the hedonic, social, utilitarian values and perceptions of risk in consumption when related to lack of privacy. The results show two main groups of users of this technology and 7 subgroups. Therefore, the contribution of the study is that the formation of these groups may reflect technological usability of user groups around the world. The study also brings to the discussion issues related to the behaviors of the users of virtual networks which can be useful for businesses and their relationships with consumers and also the development of new knowledge from such criticism and demands that digital consumers expose about the technologies.

Estudo longitudinal do desenvolvimento da comunicação em diversas economias mundiais

El desarrollo de la industria de las comunicaciones de un pais tiene relaciones con su desarrollo economico y es posible demostrar esa conexion estadisticamente, como se ha hecho por investigadores de instituciones tales como la Union Internacional de Telecomunicaciones (ITU). Como estes datos se presentan unicamente en una forma simple y no levan en cuenta factores de interconexion, es importante se desarrollar investigaciones para evaluar la relacion entre las variables relevantes del campo. En este trabajo se pretende analizar los factores de desarrollo tecnologico que mejor describen la situacion economica de un pais, integrando la usabilidad de los servicios de comunicacion con la situacion economica. Fueron usados los datos de 56 paises, elegidos al azar. Una encuesta realizada en la forma de mineria de datos se llevo a cabo, que analizo los datos existentes previamente recogidos por instituciones de investigacion tales como la UIT, el Banco Mundial, y otros. Cada factor de facilidad de uso, de preferencia y de servicio analizado es identificado como un reflejo de otros servicios y usos desarrollados previamente. Parte de la literatura sobre este tema (ARRUDA FILHO; CASSIA; MARINO, 2008; CHERRY, 2007; DAVIES; HARDT; KELLY, 2004) sostiene que el desarrollo economico en algunos paises es consecuencia del aumento del desarrollo tecnologico, pero otros demuestran al contrario. Este articulo presenta estas relaciones en ciertos paises, elegidos por la cantidad de informacion disponible, teniendo en cuenta su posicion en lo desarrollo global, relacionando directamente el comportamiento a lo crecimiento o la reduccion en el uso de tecnologias, como la telefonia e Internet. Este estudio utiliza datos colectados de dos fuentes mundiales de informacion: la Union Internacional de Telecomunicaciones (UIT) y el Banco Mundial. Se utilizaron las tecnicas estadisticas de regresion y analisis de la varianza para analizar los datos de 56 paises. Se concluye que el crecimiento economico tiene una relacion directa con el crecimiento del mercado de comunicacion, siendo los productos de comunicacion factores de influencia para el desarrollo economico.

El comportamiento del consumidor y los valores tecnológicos 'ecológicamente correctos': la ideología verde versus con la responsabilidad social

The present article intends to show a brief analysis about the technological consumers perception concerning the new products which integrates the ecological factor in Brazil. For being a new concept and hardly explored, we are able to perceive the importance of studying about ideology and social responsibility in the discourse used by users of high-tech devices (cellphones, netbooks and others). Therefore, a qualitative research was perfomed with Brazilian consumers using netnography as a method, wich consists in the extraction of reports about the explored theme from specialized blogs/websites, in order to decode and categorize the groups that take part in this subject. The research resulted in six differents categories of known consumers, exposing some implied subcategories according to the green products integrated. Based on that, marketing professionals may use this comprehension when intending to launch new products and develop new devices, aiming to increase the perception of market values, sales, among others, to better understand the target audience and their consumers preferences.

Technological consumer's behavior in the face of values 'environmentally friendly': green ideology versus social responsibility

The present article intends to show a brief analysis about the technological consumers perception concerning the new products which integrates the ecological factor in Brazil. For being a new concept and hardly explored, we are able to perceive the importance of studying about ideology and social responsibility in the discourse used by users of high-tech devices (cellphones, netbooks and others). Therefore, a qualitative research was perfomed with Brazilian consumers using netnography as a method, wich consists in the extraction of reports about the explored theme from specialized blogs/websites, in order to decode and categorize the groups that take part in this subject. The research resulted in six differents categories of known consumers, exposing some implied subcategories according to the green products integrated. Based on that, marketing professionals may use this comprehension when intending to launch new products and develop new devices, aiming to increase the perception of market values, sales, among others, to better understand the target audience and their consumers preferences.