Intra‐cluster Knowledge Exchange and Frequency of Product Innovation in a Digital Cluster

We investigate how intra‐cluster knowledge exchange affects the frequency of product innovation. Based on self‐administered survey data of digital SMEs from the Bournemouth and Poole regions of England, this study shows that digital firms that sustain both temporary and prolonged relationships with outbound employees have a higher probability of introducing frequent product innovation. Moreover, while cognitive proximity and the use of external knowledge providers increase the probability of frequent product innovation, geographical proximity reduces it. Our findings suggest that managers of young digital firms with limited resources in peripheral regions should ‘act near’ before reaching out.     

Performance Effects of External Search Strategies in European Small and Medium‐Sized Enterprises

There is little evidence regarding the performance impact of open innovation on small and medium‐sized enterprises (SMEs), especially across different firm‐size categories and sectors. Using new survey data from 28 European countries, we specify ordered logit and generalized proportional odds models to explore how seven individual external search strategies (knowledge sources) affect SME innovation performance across different size categories and sectors. While we find some consistently positive effects, in particular from using customers as an external knowledge source, we also find that some search strategies may not be beneficial. These findings suggest managerial and policy implications.     

Attitudes Towards Some Aspects Of Business Ethics Among Students From Countries In Transition: An Empirical Research

In this paper certain parameters of ethical values and attitudes of students in economics from different countries are analysed (attitudes toward work and organisation; goals of work; readiness to work for common benefit, etc.). The basic question was whether, and to what extent, such attitudes differ in countries in transition (former communist countries of Central and Eastern Europe) compared with western countries with a developed market economy and Latin-American countries. On the basis of empirical research we conclude that there are significant differences, i.e., that students from countries in transition show more self-oriented attitudes, less readiness to help others and tend to consider work in an organisation primarily as a means to achieve one's own goals (always compared with students from the other two groups of countries). The main explanation for this is found in the transition itself, i.e., conditions and processes in those countries in the 1990s, and less in the heritage of the previous (communist) system. The authors are at the University of Split, Faculty of Economics, Radovanova 13, 21000 Split, CROATIA. phone: +385/21/366-033; fax: +385/21/366-026 e-mail: grubisic@oliver.efst.hr and goic@oliver.efst.hr     

The Effect of Terrorist Incidents on Capital Flows

Previous work has shown that terrorism has significant negative impact on countries' economies. We explore this relationship in more detail. Using an unbalanced panel of more than 160 countries for up to 25 years and the Global Terrorism Database (GTD) we show a decrease in foreign direct investment (FDI) as a consequence of terrorism. We also find evidence that FDI flows are more sensitive to terrorism than either portfolio investments or external debt flows. Finally, we test the hypothesis that terrorism has negative spill‐over effects on FDI flows into neighboring countries and find evidence that cultural, but not geographical, closeness matters.     

In-house R&D,external R&D and cooperation breadth in Spanish manufacturing firms: is there a synergistic effect on innovation outputs?

ABSTRACT

This study explores the nature of relationship between in-house R&D, external R&D and cooperation breadth and their joint impact on patent counts as well as technological, product and process, innovations in Spanish manufacturing firms. With regards to patent counts, empirical findings from a Generalized Method of Moments (GMM) estimator suggest a complementarity effect of internal and external R&D activities conditional on the breadth of R&D cooperation. Concerning technological innovation, results from dynamic random-effects probit models indicate no synergistic effects. In addition, we find evidence of persistence of all three innovation output measures. Our results suggest policy implications in relation to strengthening firms’ absorptive capacity that could have long-run effects.     

The model of risk assessment of greywater discharges from the Danube River ships

Having in mind the immense value of the Danube River and knowing that risk assessment of its pollution is one of the key elements for ecology and the health of people in its region, in this paper we emphasized the importance of risk assessment of ship-generated wastewater – particularly in the case of greywater discharges. Although, a number of methods for measuring and analysing different environmental risks have been developed, previous research shows that the failure mode and effect analysis (FMEA) method is applicable in solving environmental issues. Therefore, we conducted our research with the main purpose to develop a model of FMEA method application for assessing the risks of ship-generated greywater discharges based on estimated data for total quantity of greywater, the size of the exposed population to the pollution of greywater and the possibilities of this pollution detection. Risk analysis was performed on official data for nine ports on the Danube River on inland waterways of the Republic of Serbia. Based on the obtained results, we concluded that measures, recommendations and risk prevention strategies for ship-generated greywater discharges should go into two major directions: (1) decreasing the pollution caused by greywater discharges; (2) increasing the number of water quality monitoring stations.     

Multi-subject stochastic blockmodels with mixed effects for adaptive analysis of individual differences in human brain network cluster structure

Recently, there has been a renewed interest in the class of stochastic blockmodels (SBM) and their applications to multi-subject brain networks. In our most recent work, we have considered an extension of the classical SBM, termed heterogeneous SBM (Het-SBM), that models subject variability in the cluster-connectivity profiles through the addition of a logistic regression model with subject-specific covariates on the level of each block. Although this model has proved to be useful in both the clustering and inference aspects of multi-subject brain network data, including fleshing out differences in connectivity between patients and controls, it does not account for dependencies that may exist within subjects. To overcome this limitation, we propose an extension of Het-SBM, termed Het-Mixed-SBM, in which we model the within-subject dependencies by adding subject- and block-level random intercepts in the embedded logistic regression model. Using synthetic data, we investigate the accuracy of the partitions estimated by our proposed model as well as the validity of inference procedures based on the Wald and permutation tests. Finally, we illustrate the model by analyzing the resting-state fMRI networks of 99 healthy volunteers from the Human Connectome Project (HCP) using covariates like age, gender, and IQ to explain the clustering patterns observed in the data.     

Public opinion and terrorist acts

The paper examines support for terrorism in public opinion and the relationship with terrorist attacks. We link the 2007 PEW survey data on justification for suicide terror and opinions in 16 countries of the Middle East, Africa and Asia on nine regional powers, to the NCTC data on international terrorist acts between 2004 and 2008. We find that justification in public opinion for suicide terrorism increases terror attacks on people in countries that are unfavorably regarded. There is a robust positive relationship between the share of the population in a country that at the same time justifies suicide bombings and has an unfavorable opinion of another country, and terrorism originating from the former country.     

Product innovation,process innovation and export propensity: persistence,complementarities and feedback effects in Spanish firms

Drawing on a longitudinal data of Spanish manufacturing firms, this study explores the persistence of technological innovation and exports, their potential complementary relations and feedback effects. Empirical results suggest the presence of both true and spurious state dependence in all three activities. True state dependence in technical innovation and exports implies intertemporal spillovers relevant to the evaluation of innovation and export policy measures. However, given that results also suggest spurious state dependence, firm-specific characteristics should be taken into account in promoting technological innovations and exports. In addition, we find a strong complementarity between product and process innovation both through a contemporaneous effect and via unobserved firm characteristics. However, concerning complementarity between innovation and exports, results suggests complementarity only through contemporaneous effects. Finally, we find no support for the causal link from past product and process innovations to current export activities.