The intellectual and scientific basis of science,technology and innovation research

There has been a considerable increase in the literature devoted to innovation in the past few decades. This research area is characterized by prolific interdisciplinary connections and no single domain is able to embrace all aspects of science, technology and innovation. By analyzing nearly 60,000 references included in the 1442 articles published between 1974 and 2007 in the area's seed journal, Research Policy (RP), we have uncovered the following patterns: (1) the most important sources of knowledge are associated with “core” economics (mostly mainstream) and management sources, even though the importance of innovation-related sources has been rising; (2) the degree of autonomy of science, technology and innovation research is still weak, revealing its incipience and lack of a unified theoretical framework; (3) the most influential authors and studies follow heterodox approaches, namely the evolutionary approach (e.g. Richard R. Nelson) and the European approach to innovation (e.g. Keith Pavitt and Chris Freeman), although it is rather surprising that one of the most widely recognized founding fathers of innovation-related studies, Joseph Schumpeter, is absent from the top-10 cited authors list; and (4) the ranking of the most influential studies highlights the relevance of the evolutionary paradigm, with its focus on the capabilities and routines of firms, and the policy-driven nature of topics, evidencing the pervasiveness of the literature on the National System of Innovation.     

Computing nonparametric functional estimates in semiparametric problems

The purpose of this note is to provide a brief account of available FORTRAN Routines for computing nonparametric functional estimates, Frequently used in semiparametric problems, evaluated at each data point. Then semiparametric estimates can be computed employing the use-favored economic software.     

Exploratory data analysis for counts using the empirical probability generating function 1

We present a graphical method based on the empirical probability generating function for preliminary statistical analysis of distributions for counts. The method is especially useful in fitting a Poisson model, or for identifying alternative models as well as possible outlying observations from general discrete distributions.     

A generalization of the Solis-Wets method

In this paper we focus on the application of global stochastic optimization methods to extremum estimators. We propose a general stochastic method—the master method—which includes several stochastic optimization algorithms as a particular case. The proposed method is sufficiently general to include the Solis-Wets method, the improving hit-and-run algorithm, and a stochastic version of the zigzag algorithm. A matrix formulation of the master method is presented and some specific results are given for the stochastic zigzag algorithm. Convergence of the proposed method is established under a mild set of conditions, and a simple regression model is used to illustrate the method.     

Phi-Divergence Statistics for Testing Linear Hypotheses in Logistic Regression Models

In this paper we introduce and study two new families of statistics for the problem of testing linear combinations of the parameters in logistic regression models. These families are based on the phi-divergence measures. One of them includes the classical likelihood ratio statistic and the other the classical Pearson's statistic for this problem. It is interesting to note that the vector of unknown parameters, in the two new families of phi-divergence statistics considered in this paper, is estimated using the minimum phi-divergence estimator instead of the maximum likelihood estimator. Minimum phi-divergence estimators are a natural extension of the maximum likelihood estimator.     

Publication Trends in The Analysis of Verbal Behavior: 1999–2008

The Analysis of Verbal Behavior (TAVB) publishes experimental and theoretical papers relevant to a behavioral analysis of language. Normand, Fossa, and Poling (2000) reviewed the published studies in TAVB across several dimensions and found that despite the growth of the journal, most articles published in TAVB from 1982 to 1998 were nonexperimental. The current study extends this review by analyzing articles published in TAVB from 1999 through 2008. Results showed that 48% of the articles published between 1999 and 2008 were experimental (65% in the last 4 years), 93% of them used within-subject experimental designs, and most of them (54%) included children with developmental disabilities. This suggests an increased interest in the experimental analysis of verbal behavior with a focus on teaching language to individuals with disabilities.     

Reliability, Validity, and Classification Accuracy of a Spanish Translation of a Measure of DSM-IV Diagnostic Criteria for Pathological Gambling

The aim of this study was to measure the reliability, validity, and classification accuracy of a Spanish translation of a measure of DSM-IV diagnostic criteria for Pathological Gambling (PG). Participants were 263 male and 23 female patients seeking treatment for PG and a matched non-psychiatric control sample of 259 men and 24 women. A Spanish translation of a 19-item measure of DSM-IV diagnostic criteria for PG (Stinchfield 2003) was administered along with other validity measures. The DSM-IV diagnostic criteria were found to be internally consistent with a coefficient alpha of .95 in the combined sample. Evidence of satisfactory convergent validity included moderate to high correlations with other measures of problem gambling. Using the standard DSM-IV cut-score of five, the ten criteria were found to yield satisfactory classification accuracy results with a high hit rate (.95), high sensitivity (.92), high specificity (.99), low false positive (.01), and low false negative rate (.08). Lowering the cut score to four resulted in modest improvements in classification accuracy and reduced the false negative rate from .08 to .05. The Spanish translation of a measure of DSM-IV diagnostic criteria for PG demonstrated satisfactory psychometric properties and a cut score of four improved diagnostic precision.     

Spanish version of the Objectified Body Consciousness Scale (OBCS): results from two samples of female university students / Versión española de la Objectified Body Consciousness Scale (OBCS): resultados correspondientes a dos muestras de estudiantes universitarias

Self-objectification happens when people internalize a view of themselves as an object or collection of body parts. Two studies were conducted to validate the Spanish version of the Objectified Body Consciousness Scale (OBCS). This scale assesses self-objectification through three components: body surveillance, body shame and appearance control beliefs in women. In Study 1 and Study 2, 218 and 201 female undergraduate students, respectively, responded to the Spanish version of this scale and other related measures. In Study 2, they also reported on their emotions after being exposed to an objectifying scenario. The three subscales of the Spanish version of the OBCS showed acceptable indices of internal consistency (ranging between α = .68 to .84), and the confirmatory factor analysis showed a three-factor solution to be the most appropriate. Adequate convergent validity was found with respect to the Self-Objectification Questionnaire (SOQ) and other variables such as self-esteem, other-directedness, hostile sexism and enjoyment of sexualization. These findings suggest that the Spanish version of the OBCS is a satisfactory measure of college women’s self-objectification.     

Analysis of mental workload of electrical power plant operators of control and operation centers

Electrical systems can be categorized as critical systems where failure can result in significant financial loss, injury or threats to human life. The operators of the electric power control centers perform an activity in a specialized environment and have to carry it out by mobilizing knowledge and reasoning to which they have adequate training under the terms of the existing rules. To reach this there is a common mental request of personnel involved in these centers due the need to maintain attention, memory and reasoning request. In this sense, this study aims to evaluate the Mental Workload of technical workers of the Control Centers of Electrical Energy. It was undertaken a research on operators control centers of the electricity sector in Northeast Brazil. It was used for systematic observations, followed by interview and application of the instrument National Aeronautics and Space Administration Task Load Index known as NASA-TLX. As a result there will be subsidies for an assessment of mental workload of operators, and a contribution to improving the processes of managing the operation of electric utilities and the quality of workers.     

A literature review about usability evaluation methods for e-learning platforms

The usability analysis of information systems has been the target of several research studies over the past thirty years. These studies have highlighted a great diversity of points of view, including researchers from different scientific areas such as Ergonomics, Computer Science, Design and Education. Within the domain of information ergonomics, the study of tools and methods used for usability evaluation dedicated to E-learning presents evidence that there is a continuous and dynamic evolution of E-learning systems, in many different contexts -academics and corporative. These systems, also known as LMS (Learning Management Systems), can be classified according to their educational goals and their technological features. However, in these systems the usability issues are related with the relationship/interactions between user and system in the user's context. This review is a synthesis of research project about Information Ergonomics and embraces three dimensions, namely the methods, models and frameworks that have been applied to evaluate LMS. The study also includes the main usability criteria and heuristics used. The obtained results show a notorious change in the paradigms of usability, with which it will be possible to discuss about the studies carried out by different researchers that were focused on usability ergonomic principles aimed at E-learning.