Ψηφία Συλλογή:
https://ruomo.lib.uom.gr/handle/7000/7
2024-03-29T02:18:40Z“Automatic” interpretation of multiple correspondence analysis (MCA) results for nonexpert users, using R programming
https://ruomo.lib.uom.gr/handle/7000/1719
Τίτλος: “Automatic” interpretation of multiple correspondence analysis (MCA) results for nonexpert users, using R programming
Συγγραφείς: Moschidis, Stratos; Markos, Angelos; Thanopoulos, Athanasios C.
Επιτομή: Purpose
The purpose of this paper is to create an automatic interpretation of the results of the method of multiple correspondence analysis (MCA) for categorical variables, so that the nonexpert user can immediately and safely interpret the results, which concern, as the authors know, the categories of variables that strongly interact and determine the trends of the subject under investigation.
Design/methodology/approach
This study is a novel theoretical approach to interpreting the results of the MCA method. The classical interpretation of MCA results is based on three indicators: the projection (F) of the category points of the variables in factorial axes, the point contribution to axis creation (CTR) and the correlation (COR) of a point with an axis. The synthetic use of the aforementioned indicators is arduous, particularly for nonexpert users, and frequently results in misinterpretations. The current study has achieved a synthesis of the aforementioned indicators, so that the interpretation of the results is based on a new indicator, as correspondingly on an index, the well-known method principal component analysis (PCA) for continuous variables is based.
Findings
Two (2) concepts were proposed in the new theoretical approach. The interpretative axis corresponding to the classical factorial axis and the interpretative plane corresponding to the factorial plane that as it will be seen offer clear and safe interpretative results in MCA.
Research limitations/implications
It is obvious that in the development of the proposed automatic interpretation of the MCA results, the authors do not have in the interpretative axes the actual projections of the points as is the case in the original factorial axes, but this is not of interest to the simple user who is only interested in being able to distinguish the categories of variables that determine the interpretation of the most pronounced trends of the phenomenon being examined.
Practical implications
The results of this research can have positive implications for the dissemination of MCA as a method and its use as an integrated exploratory data analysis approach.
Originality/value
Interpreting the MCA results presents difficulties for the nonexpert user and sometimes lead to misinterpretations. The interpretative difficulty persists in the MCA's other interpretative proposals. The proposed method of interpreting the MCA results clearly and accurately allows for the interpretation of its results and thus contributes to the dissemination of the MCA as an integrated method of categorical data analysis and exploration.2022-10-05T00:00:00ZInstitutional quality convergence in the Euro area countries: a note and further evidence
https://ruomo.lib.uom.gr/handle/7000/1710
Τίτλος: Institutional quality convergence in the Euro area countries: a note and further evidence
Συγγραφείς: Kollias, Christos; Messis, Petros
Επιτομή: In a recent paper in this journal, Pérez-Moreno et al. (2020) examine the presence of convergence or divergence in terms of institutional quality among the Eurozone countries over the period 2008-17. Convergence is a long-term process. Furthermore, it may not follow a smooth and stable course since it can be affected by major episodes such as the recent crisis and the recession that afflicted Eurozone countries. Better insights can be drawn with the use of timeseries spanning over a longer period and by allowing for structural shifts in the process caused by important episodes and major events.2022-01-01T00:00:00ZAre candidate countries converging with the EU in terms of the Copenhagen political criteria?
https://ruomo.lib.uom.gr/handle/7000/1709
Τίτλος: Are candidate countries converging with the EU in terms of the Copenhagen political criteria?
Συγγραφείς: Kollias, Christos; Messis, Petros
Επιτομή: The Copenhagen criteria for EU accession are the essential preconditions that candidate countries must satisfy to be deemed eligible for membership. In line with the strand of the literature that focuses on candidate countries’ convergence with the EU, the paper examines whether converge with the EU in terms of the Copenhagen political criteria can be established empirically for candidate and potential-candidate countries. Currently, the candidate country status is granted to Albania, North Macedonia, Montenegro, Serbia and Turkey. Bosnia-Herzegovina and Kosovo are recognised by the EU as potential candidate countries. In addition to the candidate and potential candidate countries, we include in the convergence tests the six countries of the Eastern Partnership EU policy: Armenia, Azerbaijan, Belarus, Georgia, Moldova, Ukraine. Using unit root tests, convergence is examined in terms of two indices drawn from the Varieties of Democracy (V-Dem) project: the Liberal democracy and the Civil liberties indices. The findings reported herein, are not uniform and on the whole offer only scant evidence in favour of the convergence hypothesis. For some of the candidate and potential candidate countries convergence is established, while for others the results do not point to such a process.2022-01-01T00:00:00ZModerating Role of Cost Accounting Information Quality on the Relationship Between the COVID‐19 Pandemic and Budgeting in Public Hospitals
https://ruomo.lib.uom.gr/handle/7000/1621
Τίτλος: Moderating Role of Cost Accounting Information Quality on the Relationship Between the COVID‐19 Pandemic and Budgeting in Public Hospitals
Συγγραφείς: Pavlatos, Odysseas; Kostakis, Hara
Επιτομή: Based on new public management, information processing theory and contingency theory, this study investigates the impact of the COVID-19 pandemic on budgeting in public hospitals, focusing on budget use. The research hypotheses were tested using a survey of 82 responses from hospital CFOs. The results show that the organisations that were most affected by the pandemic increased their use of budgets for planning, resource allocation and control, compared to those that were less affected. This study also highlights the moderating role of cost accounting information quality in the relationship between crises and budget use. We find that public hospitals that have been most affected by the pandemic and have simultaneously better cost accounting information have increased their use of budgets for planning, resource allocation and cost control more than those whose costing system does not provide superior cost data.2023-01-01T00:00:00Z