José Luis Miralles‐Quirós, María del Mar Miralles-Quirós
Research background: A current strand of the financial literature is focusing on detecting inefficiencies, such as the day-of-the-week effect, in the cryptocurrency market. However, these studies are not considering that there are no daily closes in this market, and it is possible to trade cryptocurrencies on a continuous basis. This fact may have led to biases in previous empirical results. Purpose of the article: We propose to analyse the day-of-the-week effect on the Bitcoin from an alternative perspective where each hourly data in a day is considered an event. Focusing on that objective, we employ hourly closing prices for Bitcoin which are taken from the Kraken exchange, one of the world leading exchanges and trading platforms in the cryptocurrency markets, for the period spanning from January 2016 to December 2021. Methods: Contrary to the previous empirical evidence, we do not calculate daily returns, but rather the first stage of our proposed approach is devoted to analysing the hourly mean returns for each of the 24 hours of the day for each day of the week. We look for statistically significant hourly mean returns that could advance the importance of the hourly differentiation in the Bitcoin market. In a second stage, we calculate different post-event cumulative returns which are defined as the change in log prices over a time interval. Finally, we propose different investment strategies simply based on the significant hourly mean returns we obtain and we evaluate their performance in terms of the Sharpe ratio. Findings & value added: We contribute to the debate about the degree of Bitcoin?s market efficiency by providing an alternative methodology based on an event study hourly approach. Furthermore, we provide evidence that by investing in different post-event hourly windows it is possible to outperform the classic buy-and-hold strategy.
{"title":"A new perspective of the day-of-the-week effect on Bitcoin returns: evidence from an event study hourly approach","authors":"José Luis Miralles‐Quirós, María del Mar Miralles-Quirós","doi":"10.24136/oc.2022.022","DOIUrl":"https://doi.org/10.24136/oc.2022.022","url":null,"abstract":"Research background: A current strand of the financial literature is focusing on detecting inefficiencies, such as the day-of-the-week effect, in the cryptocurrency market. However, these studies are not considering that there are no daily closes in this market, and it is possible to trade cryptocurrencies on a continuous basis. This fact may have led to biases in previous empirical results.\u0000Purpose of the article: We propose to analyse the day-of-the-week effect on the Bitcoin from an alternative perspective where each hourly data in a day is considered an event. Focusing on that objective, we employ hourly closing prices for Bitcoin which are taken from the Kraken exchange, one of the world leading exchanges and trading platforms in the cryptocurrency markets, for the period spanning from January 2016 to December 2021.\u0000Methods: Contrary to the previous empirical evidence, we do not calculate daily returns, but rather the first stage of our proposed approach is devoted to analysing the hourly mean returns for each of the 24 hours of the day for each day of the week. We look for statistically significant hourly mean returns that could advance the importance of the hourly differentiation in the Bitcoin market. In a second stage, we calculate different post-event cumulative returns which are defined as the change in log prices over a time interval. Finally, we propose different investment strategies simply based on the significant hourly mean returns we obtain and we evaluate their performance in terms of the Sharpe ratio.\u0000Findings & value added: We contribute to the debate about the degree of Bitcoin?s market efficiency by providing an alternative methodology based on an event study hourly approach. Furthermore, we provide evidence that by investing in different post-event hourly windows it is possible to outperform the classic buy-and-hold strategy.","PeriodicalId":46112,"journal":{"name":"Oeconomia Copernicana","volume":null,"pages":null},"PeriodicalIF":8.5,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48346618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Research background: The transformations induced by global challenges call for new approaches towards competitiveness and thus require a consistent rethinking of strategies and mechanisms so that they could be better adapted to the constantly changing context. Prior to the European Union (EU) accession, the Central and Eastern European (CEE) states began a broad process of economic reforms, including trade liberalization, mass privatization, exchange rate liberalization, all of which led to a wider opening to new markets, the creation of new opportunities for production and to ensuring the competitiveness of companies on foreign markets. By far, the most important step in the post-communist period was joining the EU, achieved after 2004. Over time, these states have faced, on the one hand, issues related to addressing systemic vulnerabilities, and on the other hand, finding the most appropriate measures to induce competitiveness. The influence of public policies on competitiveness is still an issue that needs to be debated, our study proposing to examine the reaction of external competitiveness to the increase of government spending and corruption. Purpose of the article: The aim of this paper is to analyze the impact of fiscal policies and corruption on the external competitiveness of the eleven countries from Eastern Europe (Bulgaria, Croatia, Czechia, Estonia, Hungary, Latvia, Lithuania, Poland, Romania, Slovakia and Slovenia) for the period 1995?2020. The choice of this time interval is to better capture the trinomial relationship between competitiveness, fiscal policy and corruption before and after the process of integration of the CEE states into the EU. Methods: The methodology chosen is based on ARDL (Autoregressive Distributed Lag) with structural breaks, the period taken into account being 1995?2020. The Unit root test of augmented Dickey?Fuller ADF (2016) was used to assess the time series stationarity. The test developed by Bai and Perron (2003) is applied to detect structural breaks, by resorting to the LM test. The tests for the cointegration between the considered variables, using the ARDL model, proposed by Pesaran et al. (2001), were also part of the research. The causality test of Granger et al. (2000) was used to assess the conditionality between the indicators. By applying these methods, it was highlighted that, especially after 2007, in the states under analysis, expansionary fiscal policies have led to internal devaluations of the currency, which ultimately increased external competitiveness, measured as real effective exchange rate. Instead, corruption has a negative impact on competitiveness. Findings & value added: The obtained results point out the relationship between competitiveness, fiscal policy and corruption in CEE countries. In the case of those that have a high competitiveness, even if there are large government expenditures, there is also an economic environment conducive to the implementation of meas
{"title":"Competitiveness, fiscal policy and corruption: evidence from Central and Eastern European countries","authors":"Ramona Ţigănaşu, G. Pascariu, D. Lupu","doi":"10.24136/oc.2022.020","DOIUrl":"https://doi.org/10.24136/oc.2022.020","url":null,"abstract":"Research background: The transformations induced by global challenges call for new approaches towards competitiveness and thus require a consistent rethinking of strategies and mechanisms so that they could be better adapted to the constantly changing context. Prior to the European Union (EU) accession, the Central and Eastern European (CEE) states began a broad process of economic reforms, including trade liberalization, mass privatization, exchange rate liberalization, all of which led to a wider opening to new markets, the creation of new opportunities for production and to ensuring the competitiveness of companies on foreign markets. By far, the most important step in the post-communist period was joining the EU, achieved after 2004. Over time, these states have faced, on the one hand, issues related to addressing systemic vulnerabilities, and on the other hand, finding the most appropriate measures to induce competitiveness. The influence of public policies on competitiveness is still an issue that needs to be debated, our study proposing to examine the reaction of external competitiveness to the increase of government spending and corruption.\u0000Purpose of the article: The aim of this paper is to analyze the impact of fiscal policies and corruption on the external competitiveness of the eleven countries from Eastern Europe (Bulgaria, Croatia, Czechia, Estonia, Hungary, Latvia, Lithuania, Poland, Romania, Slovakia and Slovenia) for the period 1995?2020. The choice of this time interval is to better capture the trinomial relationship between competitiveness, fiscal policy and corruption before and after the process of integration of the CEE states into the EU.\u0000Methods: The methodology chosen is based on ARDL (Autoregressive Distributed Lag) with structural breaks, the period taken into account being 1995?2020. The Unit root test of augmented Dickey?Fuller ADF (2016) was used to assess the time series stationarity. The test developed by Bai and Perron (2003) is applied to detect structural breaks, by resorting to the LM test. The tests for the cointegration between the considered variables, using the ARDL model, proposed by Pesaran et al. (2001), were also part of the research. The causality test of Granger et al. (2000) was used to assess the conditionality between the indicators. By applying these methods, it was highlighted that, especially after 2007, in the states under analysis, expansionary fiscal policies have led to internal devaluations of the currency, which ultimately increased external competitiveness, measured as real effective exchange rate. Instead, corruption has a negative impact on competitiveness.\u0000Findings & value added: The obtained results point out the relationship between competitiveness, fiscal policy and corruption in CEE countries. In the case of those that have a high competitiveness, even if there are large government expenditures, there is also an economic environment conducive to the implementation of meas","PeriodicalId":46112,"journal":{"name":"Oeconomia Copernicana","volume":null,"pages":null},"PeriodicalIF":8.5,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47129826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Świadek, Piotr Dzikowski, Jadwiga Gorączkowska, M. Tomaszewski
Research background: There are two main directions for the research of the national innovation system (NIS): the international comparison of macro data from national statistic offices or specific micro research restricted mostly to analysing selected issues. There is a lack of empirical studies regarding the national innovation system as a whole based on micro raw data and using statistical models. Purpose of the article: To identify and evaluate the impact of the triple helix (an input and output approach) on the NIS in Poland, including internal interactions between industry, science and government. Methods: A questionnaire surveys were conducted by the authors over the past five years in 6,284 manufacturing enterprises. The multifactor stepwise logistics regression forward was used to evaluate what, where and how effectively the NIS institutions in catching-up and medium-sized countries such as Poland are working. Findings & value added: The NIS of Poland is a complicated and non-mature system. Some parts of the network are effective, while others are not. It is noted that cooperation between enterprises stimulates innovation to a greater extent than cooperation with scientific institutions and public administration. The vertical supply chain is the main driver of NIS in Poland. Domestic scientific institutions have an impact that is often short-term, fragmented, and non-continuous, though it can be strong from time to time. Strangely, organizations with low knowledge potential support industry innovation activity more efficiently and in a more organised way than science institutes, excluding foreign ones. For catching-up countries, this is an important bridging of the knowledge gap - it turns out that the quantity and quality of domestic knowledge in the national innovation system is inefficient. Scientific institutions need to achieve sufficient critical mass to stimulate innovative activity. The value of the conclusions is underlined by the fact that the analyses were based on micro data, which allowed to capture the relationships between the different elements of the triple helix.
{"title":"The National Innovation System in a catching-up country: empirical evidence based on micro data of a Triple Helix in Poland","authors":"A. Świadek, Piotr Dzikowski, Jadwiga Gorączkowska, M. Tomaszewski","doi":"10.24136/oc.2022.016","DOIUrl":"https://doi.org/10.24136/oc.2022.016","url":null,"abstract":"Research background: There are two main directions for the research of the national innovation system (NIS): the international comparison of macro data from national statistic offices or specific micro research restricted mostly to analysing selected issues. There is a lack of empirical studies regarding the national innovation system as a whole based on micro raw data and using statistical models.\u0000Purpose of the article: To identify and evaluate the impact of the triple helix (an input and output approach) on the NIS in Poland, including internal interactions between industry, science and government.\u0000Methods: A questionnaire surveys were conducted by the authors over the past five years in 6,284 manufacturing enterprises. The multifactor stepwise logistics regression forward was used to evaluate what, where and how effectively the NIS institutions in catching-up and medium-sized countries such as Poland are working.\u0000Findings & value added: The NIS of Poland is a complicated and non-mature system. Some parts of the network are effective, while others are not. It is noted that cooperation between enterprises stimulates innovation to a greater extent than cooperation with scientific institutions and public administration. The vertical supply chain is the main driver of NIS in Poland. Domestic scientific institutions have an impact that is often short-term, fragmented, and non-continuous, though it can be strong from time to time. Strangely, organizations with low knowledge potential support industry innovation activity more efficiently and in a more organised way than science institutes, excluding foreign ones. For catching-up countries, this is an important bridging of the knowledge gap - it turns out that the quantity and quality of domestic knowledge in the national innovation system is inefficient. Scientific institutions need to achieve sufficient critical mass to stimulate innovative activity. The value of the conclusions is underlined by the fact that the analyses were based on micro data, which allowed to capture the relationships between the different elements of the triple helix.","PeriodicalId":46112,"journal":{"name":"Oeconomia Copernicana","volume":null,"pages":null},"PeriodicalIF":8.5,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47022909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Research background: In recent years, much attention in the literature has been paid to the economic and environmental conditions of energy development as a key sector for the development of national economies. The issue of availability of individual energy resources and related energy security is receding into the background, most often due to the strong globalization of economies and the associated assumption of free international flow of goods and services, and thus practically unlimited possibilities of buying on the international commodity markets and energy exchanges. Nevertheless, the importance of energy security increases significantly in crisis situations. Purpose of the article: Bearing in mind the circumstances indicated above, the main objective of this article is to assess the energy security of European countries carried out in the context of resource and economic conditions. Methods: The article proposes its own methodological approach to the assessment of energy security based on the analysis of the energy mixes of 32 European countries and the availability of their own internal energy sources. In the process of classifying the studied economies into homogeneous groups in terms of resource and economic determinants (GDP per capita), principal component analysis was used. Findings & value added: The theoretical and methodological added value of the article results from the development of the author's approach to the assessment of energy security using individual and aggregated energy sufficiency index. Empirical added value is related to the results of energy security assessment in European countries, which can be used in shaping energy policies. Therefore, most of the 32 European countries assessed have a low level of energy security, which is due to the dominant use of non-renewable energy resources in their energy mixes. Countries with a high level of energy security have their own non-renewable resources or use alternative energy carriers in the form of renewable sources, hydropower or nuclear energy.
{"title":"Assessing the energy security of European countries in the resource and economic context","authors":"Izabela Jonek-Kowalska","doi":"10.24136/oc.2022.009","DOIUrl":"https://doi.org/10.24136/oc.2022.009","url":null,"abstract":"Research background: In recent years, much attention in the literature has been paid to the economic and environmental conditions of energy development as a key sector for the development of national economies. The issue of availability of individual energy resources and related energy security is receding into the background, most often due to the strong globalization of economies and the associated assumption of free international flow of goods and services, and thus practically unlimited possibilities of buying on the international commodity markets and energy exchanges. Nevertheless, the importance of energy security increases significantly in crisis situations.\u0000Purpose of the article: Bearing in mind the circumstances indicated above, the main objective of this article is to assess the energy security of European countries carried out in the context of resource and economic conditions.\u0000Methods: The article proposes its own methodological approach to the assessment of energy security based on the analysis of the energy mixes of 32 European countries and the availability of their own internal energy sources. In the process of classifying the studied economies into homogeneous groups in terms of resource and economic determinants (GDP per capita), principal component analysis was used.\u0000Findings & value added: The theoretical and methodological added value of the article results from the development of the author's approach to the assessment of energy security using individual and aggregated energy sufficiency index. Empirical added value is related to the results of energy security assessment in European countries, which can be used in shaping energy policies. Therefore, most of the 32 European countries assessed have a low level of energy security, which is due to the dominant use of non-renewable energy resources in their energy mixes. Countries with a high level of energy security have their own non-renewable resources or use alternative energy carriers in the form of renewable sources, hydropower or nuclear energy.","PeriodicalId":46112,"journal":{"name":"Oeconomia Copernicana","volume":null,"pages":null},"PeriodicalIF":8.5,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43522615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Research background: In recent decades, services in international trade have been growing steadily in importance, and there has been strong growth in China?s trade in services as a result of the ?opening up? policy. China has become the European Union?s second biggest trading partner in services with the European Union (EU), being China?s largest trading partner. The EU is one of the addressees of the Chinese Belt and Road Initiative, which creates opportunities and threads to the European Internal Market in services. Purpose of the article: The aim of this paper is to contribute to the literature and fulfil the research gap on the position of China in intra-EU trade in services. Methods: We identified the most important types of services offered by China to purchasers from the EU countries. By using the Revealed Symmetric Comparative Advantage (RSCA) and trade balance (LFI) indices, we classified the Chinese exports to the EU Internal Market by types of services and by their trade position. Findings & value added: We found out that China might be perceived as a strong competitor for intra-EU trade in selected services, especially those concerning low-end service tasks, that use relatively low-skilled labour and are less knowledge- and capital-intensive. However, China?s attitude is changing towards more sophisticated services for example R&D. It creates a need for a new approach to the EU economic policies (in terms of both protectionism and interventionism) in trade relations in services with China.
{"title":"The position of China in trade in services within the European Union","authors":"Adam A. Ambroziak, J. Stefaniak","doi":"10.24136/oc.2022.010","DOIUrl":"https://doi.org/10.24136/oc.2022.010","url":null,"abstract":"Research background: In recent decades, services in international trade have been growing steadily in importance, and there has been strong growth in China?s trade in services as a result of the ?opening up? policy. China has become the European Union?s second biggest trading partner in services with the European Union (EU), being China?s largest trading partner. The EU is one of the addressees of the Chinese Belt and Road Initiative, which creates opportunities and threads to the European Internal Market in services.\u0000Purpose of the article: The aim of this paper is to contribute to the literature and fulfil the research gap on the position of China in intra-EU trade in services.\u0000Methods: We identified the most important types of services offered by China to purchasers from the EU countries. By using the Revealed Symmetric Comparative Advantage (RSCA) and trade balance (LFI) indices, we classified the Chinese exports to the EU Internal Market by types of services and by their trade position.\u0000Findings & value added: We found out that China might be perceived as a strong competitor for intra-EU trade in selected services, especially those concerning low-end service tasks, that use relatively low-skilled labour and are less knowledge- and capital-intensive. However, China?s attitude is changing towards more sophisticated services for example R&D. It creates a need for a new approach to the EU economic policies (in terms of both protectionism and interventionism) in trade relations in services with China.","PeriodicalId":46112,"journal":{"name":"Oeconomia Copernicana","volume":null,"pages":null},"PeriodicalIF":8.5,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45284000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Research background: Many scientists have researched the economic competitiveness of agriculture. At the same time, considerably less attention is paid to the so-called green competitiveness. Considering a global trend searching for solutions to reduce the environmental impact of the agricultural sector, it seems reasonable to explore the overlap between economic competitiveness and green competitiveness. Purpose of the article: This study aims to answer the following questions: What is the level of economic and green competitiveness of agriculture in respective countries? What is the level of the comprehensive competitiveness of agriculture in EU member states? Do the economic competitiveness outcomes of respective countries coincide with their green competitiveness rankings? Methods: Taxonomic methods were applied to design synthetic indices of economic, green and comprehensive competitiveness of 27 member states of the European Union, based on multi-criteria sets of specific indicators from 2018. Findings & value added: The results of analyses imply that, in general, the level of green competitiveness of agriculture is higher than the level of its economic competitiveness in EU member states. Simultaneously, the developed rankings show that respective countries' economic and green competitiveness are not linked. In other words, economic competitiveness outcomes do not match green competitiveness outcomes for EU agriculture. This work is a genuine contribution to studies on the methods for measuring and evaluating the competitiveness of agriculture as it designs separate synthetic measures for economic and green competitiveness and confronts both types of competitiveness in EU member states. The research findings for the first time provide clear answers to questions about the mutual relationship between economic and green competitiveness in agriculture. Furthermore, an added value of this study is that it introduces and attempts to define the notion of green competitiveness.
{"title":"Economic competitiveness vs. green competitiveness of agriculture in the European Union countries","authors":"A. Nowak, A. Kasztelan","doi":"10.24136/oc.2022.012","DOIUrl":"https://doi.org/10.24136/oc.2022.012","url":null,"abstract":"Research background: Many scientists have researched the economic competitiveness of agriculture. At the same time, considerably less attention is paid to the so-called green competitiveness. Considering a global trend searching for solutions to reduce the environmental impact of the agricultural sector, it seems reasonable to explore the overlap between economic competitiveness and green competitiveness.\u0000Purpose of the article: This study aims to answer the following questions: What is the level of economic and green competitiveness of agriculture in respective countries? What is the level of the comprehensive competitiveness of agriculture in EU member states? Do the economic competitiveness outcomes of respective countries coincide with their green competitiveness rankings?\u0000Methods: Taxonomic methods were applied to design synthetic indices of economic, green and comprehensive competitiveness of 27 member states of the European Union, based on multi-criteria sets of specific indicators from 2018.\u0000Findings & value added: The results of analyses imply that, in general, the level of green competitiveness of agriculture is higher than the level of its economic competitiveness in EU member states. Simultaneously, the developed rankings show that respective countries' economic and green competitiveness are not linked. In other words, economic competitiveness outcomes do not match green competitiveness outcomes for EU agriculture. This work is a genuine contribution to studies on the methods for measuring and evaluating the competitiveness of agriculture as it designs separate synthetic measures for economic and green competitiveness and confronts both types of competitiveness in EU member states. The research findings for the first time provide clear answers to questions about the mutual relationship between economic and green competitiveness in agriculture. Furthermore, an added value of this study is that it introduces and attempts to define the notion of green competitiveness.","PeriodicalId":46112,"journal":{"name":"Oeconomia Copernicana","volume":null,"pages":null},"PeriodicalIF":8.5,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46747627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Kliestik, A. Novák Sedláčková, M. Bugaj, A. Novák
Research background: Business profit and its stable development are key performance indicators. Many enterprises performed earnings manipulation, either upward or downward, according to the current business and macroeconomic situation, as well as time. These activities may interrupt the stationarity of time series. This article focuses on the transport enterprises, and the assessment of bonds in their earnings. Purpose of the article: The target of the article was to identify the occurrence of non-stationary and its unit root in the EBITDA of transport enterprises for each country in V4 during the period of 2010?2019. Methods: The stationarity and unit roots in time series were tested by the Kwiatkowski, Phillips, Schmidt, and Shin tests and the Augmented Dickey-Fuller based on the samples of 470 Slovak, 405 Czech, 774 Polish, and 1,056 Hungarian. The behavior of earnings manipulation (the first cause of non-stationarity) was indicated by the Modified Jones model. Additional causes for non-stationarity were confirmed by the regression analysis, including factors such as the GDP, unemployment rate, average monthly gross wage, and the Ease of doing business index. Findings & value added: The non-stationarity in the time series of EBITDA was disclosed for each country in the V4 region. Earnings management was discovered to be the cause of this erratic development. Thus, the value-added for the authorities and auditors is to show the association between non-stationary and creative accounting. In addition, purposeful downward manipulation in the transport sector occurs, not upward, which is typical in general. The methodology used in the study may be applied cross-sectorally in emerging countries. The labelling of specific macroeconomic variables depending on the country offers enterprises the opportunity to focus on factors with a crucial influence on their existence and activities.
{"title":"Stability of profits and earnings management in the transport sector of Visegrad countries","authors":"T. Kliestik, A. Novák Sedláčková, M. Bugaj, A. Novák","doi":"10.24136/oc.2022.015","DOIUrl":"https://doi.org/10.24136/oc.2022.015","url":null,"abstract":"Research background: Business profit and its stable development are key performance indicators. Many enterprises performed earnings manipulation, either upward or downward, according to the current business and macroeconomic situation, as well as time. These activities may interrupt the stationarity of time series. This article focuses on the transport enterprises, and the assessment of bonds in their earnings.\u0000Purpose of the article: The target of the article was to identify the occurrence of non-stationary and its unit root in the EBITDA of transport enterprises for each country in V4 during the period of 2010?2019.\u0000Methods: The stationarity and unit roots in time series were tested by the Kwiatkowski, Phillips, Schmidt, and Shin tests and the Augmented Dickey-Fuller based on the samples of 470 Slovak, 405 Czech, 774 Polish, and 1,056 Hungarian. The behavior of earnings manipulation (the first cause of non-stationarity) was indicated by the Modified Jones model. Additional causes for non-stationarity were confirmed by the regression analysis, including factors such as the GDP, unemployment rate, average monthly gross wage, and the Ease of doing business index.\u0000Findings & value added: The non-stationarity in the time series of EBITDA was disclosed for each country in the V4 region. Earnings management was discovered to be the cause of this erratic development. Thus, the value-added for the authorities and auditors is to show the association between non-stationary and creative accounting. In addition, purposeful downward manipulation in the transport sector occurs, not upward, which is typical in general. The methodology used in the study may be applied cross-sectorally in emerging countries. The labelling of specific macroeconomic variables depending on the country offers enterprises the opportunity to focus on factors with a crucial influence on their existence and activities.","PeriodicalId":46112,"journal":{"name":"Oeconomia Copernicana","volume":null,"pages":null},"PeriodicalIF":8.5,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46882610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Eduardo Terán-Yépez, David Jiménez-Castillo, Manuel Sánchez-Pérez
Research background: Little research addresses how identifying an opportunity in the international market, whether through active search or serendipitous discovery, may have implications for the subsequent gestation behaviors. An emerging body of research suggests addressing this deficiency by focusing on the cognitive and experience-based factors that international entrepreneurs use to develop an opportunity in the foreign market once identified. Purpose of the article: The aim of this study is to explore the role of active and serendipitous international opportunity recognition (IOR) in entrepreneurs? problem-solving skills (problem-solving speed and creativity), as well as the moderating effect of past negative entrepreneurial experience (PNE) on such relationships. Methods: This study used the survey data collection method through an online self-administered questionnaire. Partial least square structural equation modeling (PLS-SEM) method was used to analyze the results over a sample of Spanish international entrepreneurs. Findings & value added: The results show that entrepreneurs that have identified an international opportunity (IO) actively are better equipped to solve problems speedily than those that have discovered an IO serendipitously. In contrast, entrepreneurs who identified an IO serendipitously are better equipped to solve problems creatively. Furthermore, the impact of active search on problem-solving speed is greater for entrepreneurs without PNE, and the impact of active search on problem-solving creativity is greater for entrepreneurs with PNE. Also, it is found that PNE does not moderate serendipitous IOR relationship with problem-solving competence. These findings are relevant as they indicate that the IOR processes have implications for the subsequent gestation behaviors. Thus, the value added of this study is the combination of cognitive and experience-based factors of the international entrepreneur to enrich the link between IOR processes and IO development. These are two intertwined and interdependent processes, which, however, have been scarcely studied as a whole. The results of this research help international entrepreneurs to understand how and why the way they recognized an IO and having or not PNE influence their problem-solving skills during the IO development phase.
{"title":"The effect of international opportunity recognition processes on problem-solving competence: how does past negative entrepreneurial experience matter?","authors":"Eduardo Terán-Yépez, David Jiménez-Castillo, Manuel Sánchez-Pérez","doi":"10.24136/oc.2022.017","DOIUrl":"https://doi.org/10.24136/oc.2022.017","url":null,"abstract":"Research background: Little research addresses how identifying an opportunity in the international market, whether through active search or serendipitous discovery, may have implications for the subsequent gestation behaviors. An emerging body of research suggests addressing this deficiency by focusing on the cognitive and experience-based factors that international entrepreneurs use to develop an opportunity in the foreign market once identified.\u0000Purpose of the article: The aim of this study is to explore the role of active and serendipitous international opportunity recognition (IOR) in entrepreneurs? problem-solving skills (problem-solving speed and creativity), as well as the moderating effect of past negative entrepreneurial experience (PNE) on such relationships.\u0000Methods: This study used the survey data collection method through an online self-administered questionnaire. Partial least square structural equation modeling (PLS-SEM) method was used to analyze the results over a sample of Spanish international entrepreneurs.\u0000Findings & value added: The results show that entrepreneurs that have identified an international opportunity (IO) actively are better equipped to solve problems speedily than those that have discovered an IO serendipitously. In contrast, entrepreneurs who identified an IO serendipitously are better equipped to solve problems creatively. Furthermore, the impact of active search on problem-solving speed is greater for entrepreneurs without PNE, and the impact of active search on problem-solving creativity is greater for entrepreneurs with PNE. Also, it is found that PNE does not moderate serendipitous IOR relationship with problem-solving competence. These findings are relevant as they indicate that the IOR processes have implications for the subsequent gestation behaviors. Thus, the value added of this study is the combination of cognitive and experience-based factors of the international entrepreneur to enrich the link between IOR processes and IO development. These are two intertwined and interdependent processes, which, however, have been scarcely studied as a whole. The results of this research help international entrepreneurs to understand how and why the way they recognized an IO and having or not PNE influence their problem-solving skills during the IO development phase.","PeriodicalId":46112,"journal":{"name":"Oeconomia Copernicana","volume":null,"pages":null},"PeriodicalIF":8.5,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44854056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Research background: The world has been fighting the new pandemic caused by COVID-19 since March 2020. The subsequent restrictions on economic activity resulted in a supply shock, accompanied by a supply chain disruption, job layoffs, reduced work time and wages and decreased disposable incomes and taxes, which led to a demand shock. However, whether a close link exists between the number of confirmed cases, deaths and economic indicators during the COVID-19 pandemic remains uncertain. Purpose of the article: The current study aims to analyse the impact of the number of infections and deaths on economic growth and labour market indicators in the member states of the European Union. Methods: To achieve the main research goal, we conduct a panel data analysis on the quarterly data of 2020. Specifically, we developed three random-effects panel data econometric models to estimate the significance of infection and mortality rates for economic growth as well as employment and unemployment rates. Findings & value added: This study contributes to the existing literature by analysing the link between the infection and mortality rates of COVID-19 and selecting macro-economic indicators within the European Union. The results show that the infection rate is not a significant variable for economic growth and labour market indicators. However, an increase in the number of confirmed deaths has a significantly negative impact on the economy. Moreover, an increase in the mortality rate has a worse impact on the labour market than on economic growth in general. These results can serve as a theoretical basis for future research on the interconnections between pandemics and macro-economic indicators. The findings can also contribute to developing efficient policy instruments for mitigating the negative impact of pandemics in the future, thereby ensuring the cooperation of fiscal, monetary and health policy authorities.
{"title":"Economic growth and labour market in the European Union: lessons from COVID-19","authors":"Andrej Přívara","doi":"10.24136/oc.2022.011","DOIUrl":"https://doi.org/10.24136/oc.2022.011","url":null,"abstract":"Research background: The world has been fighting the new pandemic caused by COVID-19 since March 2020. The subsequent restrictions on economic activity resulted in a supply shock, accompanied by a supply chain disruption, job layoffs, reduced work time and wages and decreased disposable incomes and taxes, which led to a demand shock. However, whether a close link exists between the number of confirmed cases, deaths and economic indicators during the COVID-19 pandemic remains uncertain.\u0000Purpose of the article: The current study aims to analyse the impact of the number of infections and deaths on economic growth and labour market indicators in the member states of the European Union.\u0000Methods: To achieve the main research goal, we conduct a panel data analysis on the quarterly data of 2020. Specifically, we developed three random-effects panel data econometric models to estimate the significance of infection and mortality rates for economic growth as well as employment and unemployment rates.\u0000Findings & value added: This study contributes to the existing literature by analysing the link between the infection and mortality rates of COVID-19 and selecting macro-economic indicators within the European Union. The results show that the infection rate is not a significant variable for economic growth and labour market indicators. However, an increase in the number of confirmed deaths has a significantly negative impact on the economy. Moreover, an increase in the mortality rate has a worse impact on the labour market than on economic growth in general. These results can serve as a theoretical basis for future research on the interconnections between pandemics and macro-economic indicators. The findings can also contribute to developing efficient policy instruments for mitigating the negative impact of pandemics in the future, thereby ensuring the cooperation of fiscal, monetary and health policy authorities.","PeriodicalId":46112,"journal":{"name":"Oeconomia Copernicana","volume":null,"pages":null},"PeriodicalIF":8.5,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43360505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. C. V. Valls Martínez, Rafael Soriano Román, Pedro Antonio Mart´ín-Cervantes
Research background: Companies are required to implement Corporate Social Responsibility (CSR) policies to mitigate the adverse social and environmental effects of their activities and gain legitimacy in the eyes of society. Sustainability initiatives are costly for companies but, at the same time, they are important value-creation drivers. Retail and institutional investors are increasingly choosing portfolios based on CSR performance. However, the relationship between CSR and market beta has hardly been studied at all in the literature, and no direct comparison of the U.S. and European markets has been conducted. Purpose of the article: The two fundamental variables that define an investment are return and risk, and the appropriate risk-return combination depends on the profile of the investors. This research aims to analyze the relationship between CSR and market risk, understood as price volatility and measured by market beta in the U.S. and European markets. Methods: Companies listed in the S&P 500 and Euro Stoxx 300 indexes from 2015 to 2019 were examined using OLS regressions with instrumental variables (IV) and fixed effects panel data. Findings & value added: The results show that those companies with higher CSR have betas below the market index in the U.S. market as well as lower volatility, and are, therefore, more appropriate choices for risk-averse investors. However, this relationship was not confirmed in the European market. This difference may be justified by two reasons: 1) The non-adherence of the United States to the Kyoto Protocol, resulting in less strict legal regulations than in Europe; 2) In the U.S. market, betas are more aggressive, while in the European market they are more defensive, with little margin for reduction. This research contributes to the current state of knowledge by providing empirical evidence that social, environmental, and corporate governance sustainability practices reduce stock volatility in the U.S. capital market, which is highly relevant for private and institutional investors who make their investments based on moral criteria. The results are current and reliable since they cover a broad and recent period for two of the most important stock market indexes.
{"title":"Should risk-averse investors target the portfolios of socially responsible companies?","authors":"M. C. V. Valls Martínez, Rafael Soriano Román, Pedro Antonio Mart´ín-Cervantes","doi":"10.24136/oc.2022.014","DOIUrl":"https://doi.org/10.24136/oc.2022.014","url":null,"abstract":"Research background: Companies are required to implement Corporate Social Responsibility (CSR) policies to mitigate the adverse social and environmental effects of their activities and gain legitimacy in the eyes of society. Sustainability initiatives are costly for companies but, at the same time, they are important value-creation drivers. Retail and institutional investors are increasingly choosing portfolios based on CSR performance. However, the relationship between CSR and market beta has hardly been studied at all in the literature, and no direct comparison of the U.S. and European markets has been conducted.\u0000Purpose of the article: The two fundamental variables that define an investment are return and risk, and the appropriate risk-return combination depends on the profile of the investors. This research aims to analyze the relationship between CSR and market risk, understood as price volatility and measured by market beta in the U.S. and European markets.\u0000Methods: Companies listed in the S&P 500 and Euro Stoxx 300 indexes from 2015 to 2019 were examined using OLS regressions with instrumental variables (IV) and fixed effects panel data.\u0000Findings & value added: The results show that those companies with higher CSR have betas below the market index in the U.S. market as well as lower volatility, and are, therefore, more appropriate choices for risk-averse investors. However, this relationship was not confirmed in the European market. This difference may be justified by two reasons: 1) The non-adherence of the United States to the Kyoto Protocol, resulting in less strict legal regulations than in Europe; 2) In the U.S. market, betas are more aggressive, while in the European market they are more defensive, with little margin for reduction. This research contributes to the current state of knowledge by providing empirical evidence that social, environmental, and corporate governance sustainability practices reduce stock volatility in the U.S. capital market, which is highly relevant for private and institutional investors who make their investments based on moral criteria. The results are current and reliable since they cover a broad and recent period for two of the most important stock market indexes.","PeriodicalId":46112,"journal":{"name":"Oeconomia Copernicana","volume":null,"pages":null},"PeriodicalIF":8.5,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45988276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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