This paper treats document–document similarity approaches in the context of science mapping. Five approaches, involving nine methods, are compared experimentally. We compare text-based approaches, the citation-based bibliographic coupling approach, and approaches that combine text-based...

Based on previous findings and theoretical considerations, it was suggested that bibliographic coupling could be combined with a cluster method to provide a method for science mapping, complementary to the prevailing co-citation cluster analytical method. The complete link cluster method was on...

The purpose of this paper is to analyze the link between the Maximum Residue Limit (MRL) of pesticides set by national regulations and the level of toxicity of the concerned chemicals. In order to perform this analysis we have first retrieved two databases: the Federal Agricultural Service of...

Background:An important question in the design of experiments is how to ensure that the findings from the experiment are generalizable to a larger population. This concern with generalizability is particularly important when treatment effects are heterogeneous and when selecting units into the...

Municipality’s financing represents a substantial part of borough politics. It results from the fundamental functioning of the municipality. One of the main tasks is not only to raise enough funds to cover and satisfy their needs, but also to guarantee their effective usage and to apply new...

This study aims to analyse the influence of the opportunity and of the necessity on the entrepreneurial activity in last years in European countries. In order to achieve its aim, there are used official databases related to the entrepreneurship activity measured by Global Entrepreneurship...

This paper uses cluster analysis to assess whether it might be a useful tool to select airport groups for comparative financial and economic performance studies. The research uses a sample of 73 airports, or airport operators, from all over the world. Nine key performance indicators (KPIs) are...

We segment the U.S. OD markets into peer groups, using a statistical cluster analysis on OD city-pair data on the basis of market concentration, passenger volume and yield. The results show: 1) that high yield markets have, on average, consistently underperformed the industry in both passenger...

This paper introduces classification criteria for airports that focus on the comparability of passenger terminal facilities. The variables used to define the criteria include terminal size in terms of number of gates, passenger characteristics in terms of international/domestic passenger volumes...

The effective use of information technology (IT) is increasingly important to remain competitive in modern manufacturing. In general, wood products industries are slower in adopting IT, which may erode their long-term competitiveness. Using cluster analysis, this study evaluates the...