The use of migration matrices to test the sustainability of the top ranked restaurants: a methodological note

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
J. François Outreville

Purpose The purpose of this paper is to present a new methodology to estimate the migration of grades of top rated restaurant and the default rate over time. Design/methodology/approach To demonstrate how to develop migration matrices the empirical results are based on the real number of top-rated French restaurants in Gault-Millau in a specific year and how they migrate from one grade to another over the period 1974–2010. Findings The purpose of the empirical analysis is only to illustrate the methodology. It is shown that migration rates are relatively stable over time. Research limitations/implications Results are presented only to illustrate the methodology. Further analysis could provide a sound basis to compare the rating systems from one guide to another. Originality/value This research note explores the notion of migration rate by developing an alternative way of measuring how restaurants survive over time.

2019 ◽  
Vol 10 (4) ◽  
pp. 447-472 ◽  
Author(s):  
Tihana Škrinjarić ◽  
Boško Šego

Purpose The purpose of this paper is to empirically evaluate risk spillovers between selected CESEE (Central, Eastern and South-Eastern Europe) stock markets in order to evaluate the possibilities of an international diversification of a portfolio. Design/methodology/approach The VAR model and the Diebold and Yilmaz (2009, 2012) spillover index are used, with rolling indices estimation over time in order to observe dynamics, which is important for investment strategies. Data are monthly and include selected CESEE stock market indices which were available to the researcher. Findings The empirical analysis for the period of January 2012–June 2019 indicates that some country risks were the net emitter of shocks in the system (Slovenia and Czech Republic), whereas some were net receivers (Croatia and Ukraine). The results are robust with respect to changing the length of the rolling window analysis, which means that investors could utilize such an approach in a dynamic portfolio selection. Research limitations/implications Observing only selected markets due to data (un)availability. Practical implications The paper shows how international investors can utilize the aforementioned methodology in order to make a more detailed analysis of the dynamics of stock markets connectedness so that international portfolios can be rebalanced according to the results and investors’ preferences. Originality/value This is the first such research which focuses on CESEE countries, since existing research is focused on more developed stock markets. Moreover, the empirical analysis extends to commenting the pairwise net indices over time, which is important for the dynamic portfolio rebalancing over time.


Author(s):  
David B. Balkin ◽  
Len J. Trevino ◽  
Markus Fitza ◽  
Luis R. Gomez-Mejia ◽  
Harsha Tadikonda

Purpose The purpose of this study is to identify antecedent factors in addition to merit that contribute to the designation of first author on a publication. A second purpose is to provide knowledge of the significance and implications of being designated first author on a research article in the management discipline. A third purpose is to propose directions for further research. Design/methodology/approach The study consists of an empirical analysis of archival data gathered from 780 authors of 260 coauthored articles from top-tier journals and uses logit regression to analyze the data. Findings The empirical analysis shows that under certain conditions author need and author power are factors that combine with merit as antecedents to the designation of being the first author of an article. Originality/value To the best of the authors’ knowledge, this is the first empirical study that identified antecedent factors that contribute to first authorship beyond the prescribed factor of merit which professional norms in management assume is the one and only factor that contributes to being designated as first author.


2015 ◽  
Vol 23 (4) ◽  
pp. 306-327 ◽  
Author(s):  
Christian Geisler Asmussen ◽  
Bo Bernhard Nielsen ◽  
Tom Osegowitsch ◽  
Andre Sammartino

Purpose – The purpose of this paper is to model and test the dynamics of home-regional and global penetration by multi-national enterprises (MNEs). Design/methodology/approach – Drawing on international business (IB) theory, the authors model MNEs adjusting their home-regional and global market presence over time. The authors test the resulting hypotheses using sales data from a sample of 220 of the world’s largest MNEs over the period 1995-2005. The authors focus specifically on the relationship between levels of market penetration inside and outside the home region and rates of change in each domain. Findings – The authors demonstrate that MNEs do penetrate both home-regional and global markets, often simultaneously, and that penetration levels often oscillate within an MNE over time. The authors show firms’ rates of regional and global expansion to be affected by their existing regional and global penetration, as well as their interplay. Finally, the authors identify differences in the steady states at which firms stabilize their penetration levels in the home-regional and the global space. The findings broadly confirm the MNE as an interdependent portfolio with important regional demarcations. Originality/value – The authors identify complex interdependencies between home-regional and global penetration and growth, paving the way for further studies of the impact of regions on MNE expansion.


2015 ◽  
Vol 27 (4) ◽  
pp. 369-388 ◽  
Author(s):  
Jang B. Singh

Purpose – The purpose of this paper was to examine changes in the contents of Canadian corporate codes of ethics over a period of two decades from an institutionalization perspective. Design/methodology/approach – The paper tracks changes in the contents of the codes of large Canadian corporations longitudinally by analyzing their contents at two points over two decades, in 1992 and 2012. In particular, the paper tests three hypotheses related to the institutionalization of codes. Findings – It was found that the codes have become more prescriptive, they are more concerned with social responsibility and are more likely to identify their moral and legal authority. Overall, the findings support an institutional interpretation of the observed changes. Research limitations/implications – While large corporations are critical in establishing new and innovative management practices, their selection as the study population limits the generalizabilty of the findings. Another limitation of this paper is that it used an a priori determined set of items to analyze the contents of the codes and while this was needed to facilitate the comparison across time, it also meant that some important items were not clearly identified. Originality/value – Codes of ethics are the foundation of ethics programs in corporations and their contents could be critical in the development of a culture of ethics in corporations. This paper makes a valuable contribution to research on business ethics by analyzing the codes of ethics of the largest corporations in Canada at two points over two decades. The need to track changes in corporate codes of ethics over time has been advocated by several researchers, but longitudinal studies in this area are rare.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Milad Mirbabaie ◽  
Stefan Stieglitz ◽  
Felix Brünker

PurposeThe purpose of this study is to investigate communication on Twitter during two unpredicted crises (the Manchester bombings and the Munich shooting) and one natural disaster (Hurricane Harvey). The study contributes to understanding the dynamics of convergence behaviour archetypes during crises.Design/methodology/approachThe authors collected Twitter data and analysed approximately 7.5 million relevant cases. The communication was examined using social network analysis techniques and manual content analysis to identify convergence behaviour archetypes (CBAs). The dynamics and development of CBAs over time in crisis communication were also investigated.FindingsThe results revealed the dynamics of influential CBAs emerging in specific stages of a crisis situation. The authors derived a conceptual visualisation of convergence behaviour in social media crisis communication and introduced the terms hidden and visible network-layer to further understanding of the complexity of crisis communication.Research limitations/implicationsThe results emphasise the importance of well-prepared emergency management agencies and support the following recommendations: (1) continuous and (2) transparent communication during the crisis event as well as (3) informing the public about central information distributors from the start of the crisis are vital.Originality/valueThe study uncovered the dynamics of crisis-affected behaviour on social media during three cases. It provides a novel perspective that broadens our understanding of complex crisis communication on social media and contributes to existing knowledge of the complexity of crisis communication as well as convergence behaviour.


2017 ◽  
Vol 19 (1/2) ◽  
pp. 138-150
Author(s):  
Mark Taylor ◽  
Denis Reilly

Purpose This paper aims to present the application of situation calculus for knowledge representation in missing persons investigations. Design/methodology/approach The development of a knowledge representation model for the missing persons investigation process based upon situation calculus, with a demonstration of the use of the model for a missing persons example case. Findings Situation calculus is valuable for knowledge representation for missing persons investigations, as such investigations have state changes over time, and due to the complexity of the differing investigation activities applicable to different situations, can be difficult to represent using simpler approaches such as tables or flowcharts. Research limitations/implications Situation calculus modelling for missing persons investigations adds formalism to the process beyond that which can be afforded by the current use of text, tables or flowcharts. The additional formalism is useful in dealing with the uncertainty present in such investigations. Practical implications The implications are a simplification of the application of the current police guidelines, and thoroughness in the application of such guidelines for missing persons investigations via situation calculus modelling. Social implications This paper supports the management of missing person investigations, by using the most critical variables in a missing persons investigation to determine relevant investigation and search activities applicable to the circumstances of a given case. Originality/value The novelty of the knowledge representation approach is the application of situation calculus via state and action vectors and a matrix of fluents to the process of missing persons investigations.


2016 ◽  
Vol 16 (4) ◽  
pp. 709-725 ◽  
Author(s):  
Nils M. Høgevold ◽  
Göran Svensson

Purpose The purpose of this paper is to frame the development and directions of business sustainability efforts. Design/methodology/approach A qualitative study was undertaken with respect to a convenience sample of reputable companies in Norway, which have implemented significant business sustainability efforts within their organisations, their business networks, the marketplace and in the society, beyond the level of mere compliance. Findings Different directions are associated with the development of corporate efforts in connection with business sustainability. Business sustainability efforts are not static, but dynamic and based upon continuous flexibility to changes and adaptations over time. Research Limitations/implications The current study highlights the need for further research into the development and directions of corporate efforts in connection with business sustainability in the marketplace and society. A key suggestion for further research is to further explore the existence of other directions. Practical Implications The directions reported, provide a framework to assess the development or the status of companies’ business sustainability efforts in the marketplace and society. Corporate efforts in connection with business sustainability develop over time as experiences are gained and personal impressions move the identified directions forward. Originality/value This study contributes to seven interconnected directions of corporate efforts in connection with business sustainability that are both relevant and potentially fruitful to both scholars and practitioners.


2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Sena Kimm Gnangnon

PurposeThis paper investigates the effect of the volatility of resource revenue on the volatility of non-resource revenue.Design/methodology/approachThe empirical analysis has utilized an unbalanced panel data set comprising 54 countries over the period 1980–2015. The two-step system generalized methods of moments (GMM) is the main economic approach used to carry out the empirical analysis.FindingsResults show that resource revenue volatility generates lower non-resource revenue volatility only when the share of resource revenue in total public revenue is lower than 18%. Otherwise, higher resource revenue volatility would result in a rise in non-resource revenue volatility.Research limitations/implicationsIn light of the adverse effect of volatility of non-resource revenue on public spending, and hence on economic growth and development prospects, countries whose total public revenue is highly dependent on resource revenue should adopt appropriate policies to ensure the rise in non-resource revenue, as well as the stability of the latter.Practical implicationsEconomic diversification in resource-rich countries (particularly in developing countries among them) could contribute to reducing the dependence of economies on natural resources, and hence the dependence of public revenue on resource revenue. Therefore, policies in favour of economic diversification would contribute to stabilizing non-resource revenue, which is essential for financing development needs.Originality/valueTo the best of our knowledge, this topic has not been addressed in the literature.


2018 ◽  
Vol 7 (3) ◽  
pp. 303-314 ◽  
Author(s):  
Jin-Wook Choi

Purpose The purpose of this paper is to examine how corruption has changed over time in South Korea and to explore how the corruption control and prevention efforts of the Korean government have been successful and failed. Design/methodology/approach This paper draws on institutional theory to formulate a qualitative analysis to assess the effectiveness of anti-corruption policies and measures, and to identify the strengths and weaknesses of anti-corruption reform efforts in South Korea. Findings This paper argues that while the Korean government has been quite successful in building anti-corruption institutions to control low-level petty corruption, it has failed to institutionalize anti-corruption institutions to curb high-level grand corruption. Originality/value While many studies have attempted to identify the successful factors of fighting corruption, this paper draws a theoretical distinction between institution-building vs institutionalization to examine the success and failure of corruption control and prevention efforts in South Korea.


2016 ◽  
Vol 54 (10) ◽  
pp. 2413-2432 ◽  
Author(s):  
Thomas Kenworthy ◽  
Jaydeep Balakrishnan

Purpose The purpose of this paper is to analyze more than three decades of theory testing published in leading operations management (OM) journals. Design/methodology/approach This piece examines the amount of theory testing, the extent to which theories are tested multiple times, and the disciplinary origins of the theories that are tested. Findings The analysis revealed that empirical OM researchers have increasingly responded to demands for more theory-driven knowledge over time. OM researchers are developing and using a wide array of domestic theories to understand empirical data. The examination also revealed a substantial focus on theory borrowed from other scientific fields. Originality/value The findings here suggest that OM is clearly a maturing discipline. As the discipline matures, it is important to consider to what extent borrowed theories and frameworks can offer value to OM. A preliminary vetting model is advanced in order to critically assess foreign theory. It is hoped that future screening promotes only the most useful non-domestic theory, thereby ensuring sufficient journal space for domestic theory and resulting in effective solutions to the pressing, practical problems of the OM field.


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