Search results for " Opera"

Exploring relationship variables and Information and Communication Technologies use in industrial segmentation

2017

Purpose In tourism, the adoption of Information and Communication Technologies (hereinafter ICT) and variables concerning firms’ links with suppliers have been recognized as key determinants to improve companies’ competitiveness. From the perspective of efficient management of company resources, segmentation has become a key tool and is particularly significant and current in the business-to-business context. The purpose of this paper is to study the segmentation of firms in the tourist industry according to perceived ICT use and relationship value and benefits. In addition, from the management approach, the authors seek to describe the segments that enable the development of differentiate…

Media constructions of fear in the outbreak of an epidemic disease

2016

Purpose – After almost a decade, the re-appearance of dengue fever in Argentina caused panic and fears. Unlike Bolivia, Brazil and Paraguay, where prevention policies have been followed, the future of dengue is uncertain in Argentina; the present paper does not have political affiliation but the purpose of this paper is to emphasizes the role that mass media plays in the coverage of epidemics. Design/methodology/approach – In moments of disorder, uncertainness or disaster, societies experience a shift in the ways they perceive their reality. Findings – In the times, media plays a dominant role in constructing the reality that the authors get to consume. Such reality is reflective of media’…

An Empirical Research on the Impacts of organisational decisions’ locus, tasks structure rules, knowledge, and IT function’s value on ERP system succ…

2014

This research examined the impacts of organisational decisions’ locus, tasks structure, rules and procedures, organisational actors’ information technology (IT) skills/knowledge and IT department’s or function’s value perceptions on enterprise resource planning (ERP) system success. While such antecedent factors matter in the discourse, research on their impacts on ERP success is rare. To increase understanding in the area, we proposed a research model and developed pertinent hypotheses that included the above-mentioned factors. Using a cross-sectional field survey, we collected data from 165 firms in three European countries. Data analysis was performed using the partial least squares (PLS…

Post-entry internationalisation activity of retailers

2013

Purpose – The purpose of this paper is to propose a framework, based on empirical research, to explain the strategic processes of post-entry development in international retailing through consideration of the dynamic capabilities attributable to retailers. Design/methodology/approach – Case study approach of five international retail firms using secondary data and primary data gathered through interviews with firms ' executives and financial analysts. Findings – The research findings, in the light of the existing literature, suggest a framework that makes a distinction between first level or generic dynamic capabilities relevant to the internationalization process and second level or speci…

A value sensitive ABM of the refugee crisis in The Netherlands

2019

We develop an agent based model to characterize the wellbeing of newcomers (i.e. asylum seeking refugees) in the context of asylum logistics using Schwartz’s theory of values. The model produces recommendations for decision-makers with respect to avoiding catastrophic outcomes and maximizing best case outcomes. We conduct analysis to show that while a relatively simple set of conditions is necessary to avoid catastrophic outcomes, these conditions are insufficient to maximize the best case outcomes. Furthermore, the conditions that maximize one best case outcome do so at the expense of another. The result is a platform for decision-makers to understand tradeoffs in policies for government a…

RISULTATI DI UNA INDAGINE EFFETTUATA PRESSO L'AOUP “PAOLO GIACCONE” DI PALERMO PER LA VALUTAZIONE DEI COMPLESSI OPERATORI

2006

Qualitative models of equipment units and their use in automatic HAZOP analysis

2000

Abstract The use of qualitative models in a support system for HAZOP analyses, in connection with an algorithm for finding the causes and the consequences of variable deviations, is described. The models use several representation structures among which mini-trees constitute the most important from the logical-functional point of view. The models are conceived both for continuous and batch plants. For the latter procedures, regulating the use of equipment units are also modelled using similar structures while equipment units are considered in various phases of their functioning. A brief description of the prototype support system, in which the models are implemented, is also given.

Evaluation of the effect of chance correlations on variable selection using Partial Least Squares -Discriminant Analysis

2013

Variable subset selection is often mandatory in high throughput metabolomics and proteomics. However, depending on the variable to sample ratio there is a significant susceptibility of variable selection towards chance correlations. The evaluation of the predictive capabilities of PLSDA models estimated by cross-validation after feature selection provides overly optimistic results if the selection is performed on the entire set and no external validation set is available. In this work, a simulation of the statistical null hypothesis is proposed to test whether the discrimination capability of a PLSDA model after variable selection estimated by cross-validation is statistically higher than t…

Higher education and the development of competencies for innovation in the workplace

2012

PurposeThis paper aims to analyze the production function nexus between higher education practice and the development of innovation‐related competencies by university graduates in Spain. The research hypothesis is the presence of statistically significant relationships between the development of innovational competencies and the modes of teaching and learning used in higher education practice.Design/methodology/approachThe relationships are modeled through a set of stochastic frontier and variance component equations with the development of each competency as the dependent variable. The main explanatory variables capture the prevalence of diverse teaching/learning modes and the behavior of …

A Spatial Difference-in-Differences Estimator to Evaluate the Effect of Change in Public Mass Transit Systems on House Prices

2014

Evaluating the impact of public mass transit systems on real-estate values is an important application of the hedonic price model (HPM). Recently, a mathematical transformation of this approach has been proposed to account for the potential omission of latent spatial variables that may overestimate the impact of accessibility to mass transit systems on values. The development of a Difference-in-Differences (DID) estimator, based on the repeat-sales approach, is a move in the right direction. However, such an estimator neglects the possibility that specification of the price equation may follow a spatial autoregressive process with respect to the dependent variable. The objective of this pap…