Exploring knowledge worker motivation in autonomous and interdependent problem solving tasks on virtual platforms

The objective of this study is to understand why virtual knowledge workers conduct autonomous tasks and interdependent problem solving tasks on virtual platforms. The study is qualitative case study including three case organizations that tap the knowledge of expert networks, and utilize virtual platforms in the work processes. Research data includes 15 interviews, that is, five experts from each case company. According to the findings there are some specific characteristics in motivation to work on tasks on online platforms. Autonomy, self-improvement, meaningful tasks, knowledge sharing, time management, variety of contacts, and variety of tasks, and projects motivate virtual knowledge workers. Factors that may enhance individuals’ engagement to work on tasks are trust, security of continuous task flow and income, feedback, meaningful tasks and tasks that contribute to self-improvement, flexibility and effectiveness in time management, and virtual tools that support social interaction. The results also indicate that there are some differences in individuals’ motivation based on the tasks’ nature. That is, knowledge sharing and variety of contacts motivated experts who worked on interdependent problem solving tasks. Then again, autonomy and variety of tasks motivated experts who worked on autonomous tasks.

Do virtual platforms impact user behavior? An experimental comparison between messages on the company's website and Facebook page.

Companies have looked for many new ways to communicate with their customers. In the current scenario, Facebook has proven to be an efficient communication tool between consumers and businesses. This study aims to understand the differences in the complaint messages sent to companies, through an experiment that measured the emotional tone and the lack of formality in each message received by the website and the Facebook page of the company. As expected, people are more informal on Facebook. However, contrary to our intuition, participants tended to display more emotions on the company website. The social norms theory and the impression management contributed to explain the phenomena found.

Moodleando en posgrado: uso del campus virtual y evaluación continuada

[spa] La adaptación al EEES ha implicado una reestructuración de los estudios universitarios promoviendo, entre otros, el uso de una evaluación continuada de los aprendizajes y de herramientas docentes virtuales en los nuevos grados. Estos cambios también pueden aplicarse en el posgrado, aunque hasta el momento, son pocas las experiencias al respecto. El presente trabajo muestra la opinión y los resultados obtenidos de los estudiantes de una asignatura de posgrado de un Máster Oficial Universitario URV-UB en el que se llevó a cabo evaluación continuada y se utilizó el Campus Virtual (CV) como herramienta de aprendizaje y participación activa. La aplicación del proyecto (2007PID/UB-14) se llevó a cabo en 4 fases: elaboración del aula, diseño de encuestas dirigidas a los estudiantes para obtener su opinión sobre la evaluación continuada y sus conocimientos en el uso de plataformas virtuales de forma previa al curso, gestión diaria del aula y seguimiento de las actividades propuestas y finalmente, evaluación del proyecto a través de indicadores cualitativos y cuantitativos derivados de las encuestas y de la propia aplicación virtual. Al inicio del curso la mayoría (93,75%) de los estudiantes prefería evaluación continuada y al final de éste el 100% estuvieron de acuerdo con el tipo de evaluación realizado. Respecto al CV, los estudiantes realizaron todas las actividades de autoevaluación voluntarias. La puntuación sobre la utilidad de todos los recursos del aula del CV fue muy elevada, siendo máxima la obtenida por los ejercicios de autoevaluación. En global, los estudiantes otorgaron al aula una puntuación de 8,1 sobre 10.

Moodleando en posgrado: uso del campus virtual y evaluación continuada

[spa] La adaptación al EEES ha implicado una reestructuración de los estudios universitarios promoviendo, entre otros, el uso de una evaluación continuada de los aprendizajes y de herramientas docentes virtuales en los nuevos grados. Estos cambios también pueden aplicarse en el posgrado, aunque hasta el momento, son pocas las experiencias al respecto. El presente trabajo muestra la opinión y los resultados obtenidos de los estudiantes de una asignatura de posgrado de un Máster Oficial Universitario URV-UB en el que se llevó a cabo evaluación continuada y se utilizó el Campus Virtual (CV) como herramienta de aprendizaje y participación activa. La aplicación del proyecto (2007PID/UB-14) se llevó a cabo en 4 fases: elaboración del aula, diseño de encuestas dirigidas a los estudiantes para obtener su opinión sobre la evaluación continuada y sus conocimientos en el uso de plataformas virtuales de forma previa al curso, gestión diaria del aula y seguimiento de las actividades propuestas y finalmente, evaluación del proyecto a través de indicadores cualitativos y cuantitativos derivados de las encuestas y de la propia aplicación virtual. Al inicio del curso la mayoría (93,75%) de los estudiantes prefería evaluación continuada y al final de éste el 100% estuvieron de acuerdo con el tipo de evaluación realizado. Respecto al CV, los estudiantes realizaron todas las actividades de autoevaluación voluntarias. La puntuación sobre la utilidad de todos los recursos del aula del CV fue muy elevada, siendo máxima la obtenida por los ejercicios de autoevaluación. En global, los estudiantes otorgaron al aula una puntuación de 8,1 sobre 10.

Using multiple abstraction levels to speedup an MPSoC virtual platform simulator

Virtual platforms are of paramount importance for design space exploration and their usage in early software development and verification is crucial. In particular, enabling accurate and fast simulation is specially useful, but such features are usually conflicting and tradeoffs have to be made. In this paper we describe how we integrated TLM communication mechanisms into a state-of-the-art, cycle-accurate, MPSoC simulation platform. More specifically, we show how we adapted ArchC fast functional instruction set simulators to the MPARM platform in order to achieve both fast simulation speed and accuracy. Our implementation led to a much faster hybrid platform, reaching speedups of up to 2.9 and 2.1x on average with negligible impact on power estimation accuracy (average 3.26% and 2.25% of standard deviation). © 2011 IEEE.

El salto virtual del debate colectivo: potencialidades y limitaciones de las nuevas plataformas para la deliberación y la toma de decisiones ciudadanas

Las nuevas Tecnologías de la Información y la Comunicación han emergido en los últimos años como el principal cambio en la conformación de redes de acción colectiva y en la mutación de los canales que sustentan el debate público. En este ámbito, la reciente aparición de plataformas virtuales para la deliberación ha contribuido a transformar profundamente la naturaleza de la acción participativa, tanto en su concepción expresiva como instrumental. Dichas nuevas herramientas se caracterizan esencialmente por proporcionar un soporte que aúna la posibilidad del debate plural en torno a asuntos políticos y cambio social, y a la vez integra en él (en grados muy diversos como se comprobará) la toma de decisiones como fruto de la deliberación colectiva. Estas propiedades les dotan de una naturaleza que no es asimilable a aplicaciones virtuales de comunicación política netamente discursivas, y perfilan un objetivo expreso de simular las características propias de un ágora presencial, ofreciendo un incentivo participativo a través de su intento por solventar las limitaciones y condicionantes espacio-temporales o de amplitud poblacional propios de la interacción comunicativa tradicional. La integración del componente expresivo e instrumental de la participación ciudadana que abordan este tipo de plataformas y aplicaciones, plantea sin duda un reto en el ya amplio debate académico en torno al alcance real de Internet como esfera significativa para conformación de voluntad colectiva y cambio político, que hasta ahora quedaba escindido entre escépticos y partidarios. La propuesta se articula a partir de la exploración y análisis comparativo de las principales plataformas y aplicaciones virtuales en español para la deliberación y la toma de decisiones colectivas. A efectos de análisis se establecen criterios evaluativos combinando las propuestas dimensionales desarrolladas por Coleman y Gøtze (2001) y Dahlgren (2005) para cuestiones relativas a Internet, comunicación y deliberación política, con especial énfasis en el análisis diferencial de las capacidades estructurales e interactivas de cada una de las herramientas.

Appropriation of technology in "non-western" societies: an approximation to the case of Bulgaria

The principal focus of the PhD thesis lies in the Social Software area and the appropriation of technology in "non-Western" societies taking the example of Bulgaria. The term "non-Western" is used to explain places considered technologically underdeveloped. The aims have been to capture how Bulgarian users creatively interpret and appropriate Internet identifying the sociocultural, political and subjective conditions in which that appropriation occurs, to identify emerging practices based on the interpretation and use of Internet and the impact they had on society and what conditions could influence the technological interpretation and the meaning these practices had for both users and social configuration of Internet as media in Bulgaria. An ethnographic approach has been used simultaneously in different online and offline contexts. On the one hand, this study is based on exploration of the Bulgarian Internet Space through online participant observation in forums and websites reviews and on the other hand, on semi-structured interviews with different types of users of the virtual platforms found, made both face to face and online and finally online participant observation at the same platforms. It is based on some contributions of the ethnographic work of Christine Hine in virtual environments and the notions of time and space of Barbara Czarniawska contextualized in the modern form of organization that occurs in a network of multiple and fragmented contexts across many movements.

A satisfação e a intenção de continuidade de uso em servços de e-learning:validação empírica de um modelo aplicado no serviço público

The present study aims to investigate the constructs of Technological Readiness Index (TRI) and the Expectancy Disconfirmation Theory (EDT) as determinants of satisfaction and continuance intention use in e-learning services. Is proposed a theoretical model that seeks to measure the phenomenon suited to the needs of public organizations that offer distance learning course with the use of virtual platforms for employees. The research was conducted from a quantitative analytical approach, via online survey in a sample of 343 employees of 2 public organizations in RN who have had e-learning experience. The strategy of data analysis used multivariate analysis techniques, including structural equation modeling (SEM), operationalized by AMOS© software. The results showed that quality, quality disconfirmation, value and value disconfirmation positively impact on satisfaction, as well as disconfirmation usability, innovativeness and optimism. Likewise, satisfaction proved to be decisive for the purpose of continuance intention use. In addition, technological readiness and performance are strongly related. Based on the structural model found by the study, public organizations can implement e-learning services for employees focusing on improving learning and improving skills practiced in the organizational environment

Práticas discursivas em blogs políticos: uma observação sobre a participação política e as trasnformações que acompanham o espaço público

This work discuss about the transformation of public space, based on the recent challenges imposed by communication practices that are renewed and recopying of the sociocultural contexts of everyday life. The study presents theoretical and empirical reports of regional political blogs. In this issue, it looks for understand the political participation in the Internet space, examining the reconfigurations that accompany social relations and new forms of interaction that are merged in the media scene. The ambience of the study limits comments of readers in two political blogs in Rio Grande do Norte, Território Livre, and Thaisa Galvão. The observation concerns about the democratic participation of citizens in matters of collective interest, during the 2010 election. The analysis update the debate on democratic discussion and conversation everyday, trying to grasp changes in social practices in virtual platforms. From this perspective, the work restores some conceptual notions that involve the public places, identifying the changes that appear in the virtual and traditional spheres, with the emergence of new places of conversations, from the Internet usage. Are also compared to similarities and differences between the two elements of the analysis. It is possible, therefore, the communication process of the two discursive spaces with ideas from the public sphere, trying to analyze the duality between public, private, and political participation in these virtual places

Representando disputas, disputando representações: cientistas sociais e campo acadêmico no ensino de sociologia

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Many-Core Architectures: Hardware-Software Optimization and Modeling Techniques

During the last few decades an unprecedented technological growth has been at the center of the embedded systems design paramount, with Moore’s Law being the leading factor of this trend. Today in fact an ever increasing number of cores can be integrated on the same die, marking the transition from state-of-the-art multi-core chips to the new many-core design paradigm. Despite the extraordinarily high computing power, the complexity of many-core chips opens the door to several challenges. As a result of the increased silicon density of modern Systems-on-a-Chip (SoC), the design space exploration needed to find the best design has exploded and hardware designers are in fact facing the problem of a huge design space. Virtual Platforms have always been used to enable hardware-software co-design, but today they are facing with the huge complexity of both hardware and software systems. In this thesis two different research works on Virtual Platforms are presented: the first one is intended for the hardware developer, to easily allow complex cycle accurate simulations of many-core SoCs. The second work exploits the parallel computing power of off-the-shelf General Purpose Graphics Processing Units (GPGPUs), with the goal of an increased simulation speed. The term Virtualization can be used in the context of many-core systems not only to refer to the aforementioned hardware emulation tools (Virtual Platforms), but also for two other main purposes: 1) to help the programmer to achieve the maximum possible performance of an application, by hiding the complexity of the underlying hardware. 2) to efficiently exploit the high parallel hardware of many-core chips in environments with multiple active Virtual Machines. This thesis is focused on virtualization techniques with the goal to mitigate, and overtake when possible, some of the challenges introduced by the many-core design paradigm.

Evaluación de la calidad pedagógica de los MOOC

Los MOOC han irrumpido de forma acelerada en el ámbito de la educación. Las principales universidades estadounidenses primero y, posteriormente, muchas otras –entre ellas, algunas españolas— están desarrollando a través de diversas plataformas en Internet, cursos bajo este formato. Al encontrarnos en una situación inicial de desarrollo de MOOC, son escasos los estudios sobre su evaluación. Por ello, el presente estudio ha realizado 129 evaluaciones a 52 MOOC ofertados por 10 plataformas. Se han analizado sus características pedagógicas a partir del Cuestionario de evaluación de la calidad de cursos virtuales (Arias, 2007). Del mismo modo se aborda la hipótesis de la existencia de diferencias estadísticamente significativas en cuanto a la calidad de los cursos en función de la plataforma que contiene los MOOC, analizando la influencia que el idioma o la presencia de una guía didáctica adecuada tiene sobre dicha calidad. Los resultados obtenidos en el presente trabajo no evidencian diferencias de forma generalizada entre los cursos, pero sí existen diferencias estadísticamente significativas en 5 de los 36 indicadores de calidad pedagógica propuestos.

Los MOOC. Un nuevo modelo de e-learning en el panorama educativo actual

La educación está enmarcada por las características de una sociedad actual en la que internet es el medio donde se están implementando nuevos enfoques dirigidos a la formación. Los MOOC, así, se están configurando como una nueva forma de e-learning en el contexto actual, especialmente en la enseñanza superior. En este trabajo abordamos este nuevo término para analizar, por un lado, su significado, características y principales plataformas virtuales que los ofrecen y, por otro lado, las cuestiones que deben resolverse con el fin de configurar un nuevo modelo de e-learning. Concluimos que este nuevo modelo debe ser acorde con una planificación de política educativa y análisis curricular.

A satisfação e a intenção de continuidade de uso em servços de e-learning:validação empírica de um modelo aplicado no serviço público

The present study aims to investigate the constructs of Technological Readiness Index (TRI) and the Expectancy Disconfirmation Theory (EDT) as determinants of satisfaction and continuance intention use in e-learning services. Is proposed a theoretical model that seeks to measure the phenomenon suited to the needs of public organizations that offer distance learning course with the use of virtual platforms for employees. The research was conducted from a quantitative analytical approach, via online survey in a sample of 343 employees of 2 public organizations in RN who have had e-learning experience. The strategy of data analysis used multivariate analysis techniques, including structural equation modeling (SEM), operationalized by AMOS© software. The results showed that quality, quality disconfirmation, value and value disconfirmation positively impact on satisfaction, as well as disconfirmation usability, innovativeness and optimism. Likewise, satisfaction proved to be decisive for the purpose of continuance intention use. In addition, technological readiness and performance are strongly related. Based on the structural model found by the study, public organizations can implement e-learning services for employees focusing on improving learning and improving skills practiced in the organizational environment

A satisfação e a intenção de continuidade de uso em servços de e-learning:validação empírica de um modelo aplicado no serviço público

The present study aims to investigate the constructs of Technological Readiness Index (TRI) and the Expectancy Disconfirmation Theory (EDT) as determinants of satisfaction and continuance intention use in e-learning services. Is proposed a theoretical model that seeks to measure the phenomenon suited to the needs of public organizations that offer distance learning course with the use of virtual platforms for employees. The research was conducted from a quantitative analytical approach, via online survey in a sample of 343 employees of 2 public organizations in RN who have had e-learning experience. The strategy of data analysis used multivariate analysis techniques, including structural equation modeling (SEM), operationalized by AMOS© software. The results showed that quality, quality disconfirmation, value and value disconfirmation positively impact on satisfaction, as well as disconfirmation usability, innovativeness and optimism. Likewise, satisfaction proved to be decisive for the purpose of continuance intention use. In addition, technological readiness and performance are strongly related. Based on the structural model found by the study, public organizations can implement e-learning services for employees focusing on improving learning and improving skills practiced in the organizational environment