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Spatial Pseudo Panel Data Models with an Application to Mincer Wage Equations

Selahattin Güris Gizem Kaya Aydin
Central European Journal of Economic Modelling and Econometrics | 2022 | No 1 | 37-56 | DOI: 10.24425/cejeme.2022.140511
Keywords spatial econometrics pseudo panel data Mincer wage equations
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Abstract

The studies using Mincer equations are generally applied to cross-sectional data at the micro-level. There are however limited studies conducted with macro or panel data for wage equations. Pseudo panel data methods can be applied to empirical studies by creating cohorts from repeated cross-sectional data in the absence of genuine panel data. Difference in both the human and labour resources according to the spatial positions may also affect the prediction of the wage equations. We aim to introduce the application of spatial pseudo panel models by creating cohorts according to the birth years of employees and regions in which they live from the Turkish household labour survey for the period 2010-2015. As a result, we find that the spatial autocorrelation model is appropriate for wage equations of Turkey. We also find that return of education on wages is 11% while return of experience on wages is 4%.
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Authors and Affiliations

Selahattin Güris
1
Gizem Kaya Aydin
2
  1. Marmara University, Department of Econometrics, Istanbul, Turkey
  2. Istanbul Technical University, Department of Management Engineering, Istanbul, Turkey

CSR initiatives in an integrated energy entity – monetary dimension

Justyna Woźniak Justyna Szewczak
Polityka Energetyczna - Energy Policy Journal | 2020 | vol. 23 | No 2 | 37–56
Keywords Corporate Social Responsibility (CSR) budgetary analysis integrated miningand energy entity
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Abstract

The subject of this article concerns the growing issue of implementing the concept of social responsibility in the activities of integrated energy entities. This work includes the performance of a budgetary analysis of the national leading company, in terms of expenses associated with corporate social responsibility (CSR). The article presents the analysis of source literature, as well as identifies stakeholder activities. The introduction includes an explanation of the concept of CSR, its global approach along with the justification for the need to implement the concept of CSR in the strategy of industry entities. The following were used, among others, to perform the research: elements of financial and non-financial reporting, i.e. reports of a vertically integrated energy company – Capital Group Polska Grupa Energetyczna SA, over the years 2013–2017. The data obtained from distributed sources were used. The company’s activities in social and environmental directions were identified, and the stakeholder groups of these initiatives were determined. The main purpose of this article was to estimate the level of expenditure associated with CSR in the context of the company’s general budget. The article emphasizes the role of the PGE Foundation as a recognizable point of company activity in the scope of CSR (the participation of individual group companies in financing the foundation was presented). The analysis of CSR expenditure included: the amount of taxes paid, costs of employee benefits and assets of the social services fund, and environmental costs.

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Authors and Affiliations

Justyna Woźniak
Justyna Szewczak

Transformer performance enhancement by optimized charging strategy for electric vehicles

R. Venkataswamy K. Uma Rao P. Meena
Archives of Electrical Engineering | 2022 | vol. 71 | No 1 | 37-56 | DOI: 10.24425/aee.2022.140196
Keywords charging stations electric vehicle e-mobility optimization transformer efficiency transformer regulation
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Abstract

Transformer efficiency and regulation, are to be maintained at maximum and minimum respectively by optimal loading, control, and compensation. Charging of electric vehicles at random charging stations will result in uncertain loading on the distribution transformer. The efficiency reduces and regulation increases as a consequence of this loading. In this work, a novel optimization strategy is proposed to map electric vehicles to a charging station, that is optimal with respect to the physical distance, traveling time, charging cost, the effect on transformer efficiency and regulation. Consumer and utility factors are considered for mapping electric vehicles to charging stations. An Internet of Things platform is used to fetch the dynamic location of electric vehicles. The dynamic locations are fed to a binary optimization problem to find an optimal routing table that maps electric vehicles to a charging station. A comparative study is carried out, with and without optimization, to validate the proposed methodology.
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Authors and Affiliations

R. Venkataswamy
1
ORCID: ORCID
K. Uma Rao
2
ORCID: ORCID
P. Meena
3
ORCID: ORCID
  1. CHRIST (deemed to be university)
  2. RV College of Engineering©
  3. BMS College of Engineering, India

Coexisting of self-excited and hidden attractors in a new 4D hyperchaotic Sprott-S system with a single equilibrium point

Saad Fawzi Al-Azzawi Maryam A. Al-Hayali
Archives of Control Sciences | 2022 | vol. 32 | No 1 | 37-56 | DOI: 10.24425/acs.2022.140863
Keywords 3D Sprott S system New 4D Sprott S system multiple attractors antisynchronization
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Abstract

Coexisting self-excited and hidden attractors for the same set of parameters in dissipative dynamical systems are more interesting, important, and difficult compared to other classes of hidden attractors. By utilizing of nonlinear state feedback controller on the popular Sprott- S system to construct a new, unusual 4D system with only one nontrivial equilibrium point and two control parameters. These parameters affect system behavior and transformation from hidden attractors to self-excited attractors or vice versa. As compared to traditional similar kinds of systems with hidden attractors, this system is distinguished considering it has (��-2) positive Lyapunov exponents with maximal Lyapunov exponent. In addition, the coexistence of multi-attractors and chaotic with 2-torus are found in the system through analytical results and experimental simulations which include equilibrium points, stability, phase portraits, and Lyapunov spectrum. Furthermore, the anti-synchronization realization of two identical new systems is done relying on Lyapunov stability theory and nonlinear controllers strategy. lastly, the numerical simulation confirmed the validity of the theoretical results.
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Authors and Affiliations

Saad Fawzi Al-Azzawi
1
ORCID: ORCID
Maryam A. Al-Hayali
1
  1. Department of Mathematics, College of Computer Science and Mathematics, University of Mosul, Mosul, Iraq

‘Sometimes Anti-Social, Always Anti-Fascist’ – Interplay Between Moderate and Radical Actors in the Polish Anti-Racist and Anti-Fascist Movements

Grzegorz Piotrowski
Studia Socjologiczne | 2021 | No 3 | 37-56 | DOI: 10.24425/sts.2021.138474
Keywords anti-fascism Poland social movement radicalism
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Abstract

With the populist tide on the rise, comparisons of contemporary right-wing governments to fascist regimes are increasingly common. The rise of the populist right-wing politics has created a number of reactions, using either new or established forms of political resistance. One of such examples is the anti-fascist movement whose strength grows in many national contexts. The recently observed political swing to the right results also in a radicalization of politics. Radical actors intersect and cooperate with moderate ones, influence one another and bring new ideas and repertoires of contention to the streets and into mainstream politics. This trend can be observed in Poland where the 2015 elections (presidential and parliamentary) resulted in the radicalization of the mainstream discourse. This article focuses on the case study of the broadly understood anti-racist movement in Poland that has recently had to remodel itself to face new challenges – in particular the institutionalization of xenophobic rhetoric and the growth of the far-right sector – and has undergone substantial changes in general. The article presents the internal radicalmoderate dynamics within the specific context of the anti-fascist movement in Poland. In particular, it explores the role of changes in political opportunity structures for the reinvigoration of the anti-fascist movement in Poland, radicalization in some of its sectors, and change in its priorities and focus.
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Authors and Affiliations

Grzegorz Piotrowski
1
ORCID: ORCID
  1. Instytut Socjologii, Uniwersytet Gdański

Marta Hirschprung: A forgotten journalist and author from Cracow

Monika Szabłowska-Zaremba
Rocznik Historii Prasy Polskiej | 2019 | t.22 | No 1 | 37-56 | DOI: 10.24425/rhpp.2019.126644
Keywords History of the press in Poland 1918–1939 the press in Cracow (1918–1939) Jewish press in occupied Poland during World War II Jewish Polish-language press for children Marta Hirschprung (1903–c. 1942)
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Abstract

Marta Hirschprung (born in Cracow in 1903, died 1942?) was a journalist, translator, editor of the children’s magazine Okienko na Świat (A Little Window on the World) and author of countless articles for the press. This article is an attempt at finding out the forgotten facts from her life and reconstructing her biography. While analyzing her contributions to the Gazeta Żydowska (The Jewish Newspaper) in 1940–1942, special attention is paid to her editorial work on its children’s supplements Nasza Gazetka/Gazetka dla Dzieci i Młodzieży (Our Little Paper/The Little Paper for Children and the Young People, 1940–1941).

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Authors and Affiliations

Monika Szabłowska-Zaremba

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