CARMEN ELENA STOENOIU

@utcluj.ro

Department Electrical Machines and Drives/ Faculty of Electrical Engineering
Technical University of Cluj -Napoca

CARMEN ELENA STOENOIU


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https://researchid.co/carmens

RESEARCH INTERESTS

management, economy, accounting
27

Scopus Publications

204

Scholar Citations

8

Scholar h-index

7

Scholar i10-index

Scopus Publications

  • Quantum symmetric analysis of interval-valued mappings based on generalized Hukuhara differences
    M. Z. Javed, M. U. Awan, C.-E. Stoenoiu, D.-A. Iluțiu-Varvara, L. Jäntschi, et al.
    Journal of Mathematics and Computer Science, 2026
  • Connecting the Computer Skills with General Performance of Companies—An Eastern European Study
    Carmen Elena Stoenoiu, Lorentz Jäntschi
    Sustainability Switzerland, 2024
    In the current era, the economic model that measures the dependence of the training offered by companies to their employees on certain variables allows for identifying the steps taken on account of digital transformations, given the fact that companies want to be competitive, to develop sustainably and the positive effect to it spreads globally. However, how digital transformation contributes remains unclear in both the literature and practice. Five descriptors of information on the economy in relation to the digital economy were extracted from the Eurostat database, and data on eight Eastern European countries in the period 2012–2020 served as primary data in the analysis. A generalized linear model was used as a statistical tool to infer the data series. Following the statistical regression analysis, it was found that the variable measuring the share of companies that offered training for the development/improvement of information and communication technology (ICT) skills is influenced by the combined effect of several other variables: ‘country’, ‘country × year’, ‘country × share of ICT personnel in total employees’, year × “share of ICT sector in GDP”. Based on the results, we noticed that the studied countries are included in two groups with distinct features, which influence the obtained GLZ model, showing the increase in the dependency effect or, on the contrary, the decrease in this effect.
  • Sustainable Development of the Economy—A Case Study of the Impacts of the Size of Enterprises and Factors Affecting Performance
    Carmen Elena Stoenoiu, Lorentz Jäntschi
    Sustainability Switzerland, 2024
    Approaches to the sustainable development of enterprises are a continuous concern of EU countries, contributing to the achievement of national well-being. Companies today face the combined effects of a multitude of factors that affect their results. This study was carried out to analyse the factors that influence the enterprises in the non-financial sector (industry, trade, and services). The analysis used the related data from eight Eastern European countries in the period of 2018–2020, and includes companies by country, size, number of employees, number of companies by number of employees, turnover, added value and average productivity per employee in generating turnover and added value, respectively. To carry out the study, four research questions and four possible hypotheses were used. For data analysis, generalized linear models were used, and four models were obtained and statistically validated. The obtained results led to the identification of the factors associated with the dependent variables that were the basis for the creation of the models.
  • A New Adaptive Eleventh-Order Memory Algorithm for Solving Nonlinear Equations
    S. Panday, Shubham Kumar Mittal, C. Stoenoiu, L. Jäntschi
    Mathematics, 2024
    In this article, we introduce a novel three-step iterative algorithm with memory for finding the roots of nonlinear equations. The convergence order of an established eighth-order iterative method is elevated by transforming it into a with-memory variant. The improvement in the convergence order is achieved by introducing two self-accelerating parameters, calculated using the Hermite interpolating polynomial. As a result, the R-order of convergence for the proposed bi-parametric with-memory iterative algorithm is enhanced from 8 to 10.5208. Notably, this enhancement in the convergence order is accomplished without the need for extra function evaluations. Moreover, the efficiency index of the newly proposed with-memory iterative algorithm improves from 1.5157 to 1.6011. Extensive numerical testing across various problems confirms the usefulness and superior performance of the presented algorithm relative to some well-known existing algorithms.
  • Circular Economy Similarities in a Group of Eastern European Countries: Orienting towards Sustainable Development
    Carmen Elena Stoenoiu, Lorentz Jäntschi
    Sustainability Switzerland, 2024
    The transition to a circular economy determines benefits at the level of each country by ensuring the premises for a sustainable economy in the future. The purpose of this study is to analyze indicators that measure the results of the implementation of circular economy through five study directions: Production and Consumption, Waste Management, Secondary Raw Materials, Competitiveness and Innovation, and Global Sustainability and Resilience. The analysis used 11 indicators that allow for the measurement of the evolution of eight Eastern European countries in the years 2012–2020. The study used three working hypotheses, which were all verified. The obtained results allowed for the classification of countries using a composite index and the grouping of countries with the help of cluster analysis using Pearson’s correlation coefficient. In a nutshell, sustainable development requires both economic development and environmental sustainability, and the developed composite index groups the countries’ evolution towards this goal.
  • A computer-based evaluation system: Its design, implementation and results obtained on a general chemistry course
    Carmen Elena Stoenoiu, Lorentz Jäntschi
    Journal of Infrastructure Policy and Development, 2024
    Using multiple evaluation methods and systems give a comprehensive assessment. A computer-based multiple-choice assessment system was designed, implemented, posted online, and used to assess students as part of their final evaluation marks for a discipline. The online system of evaluation was intended to be used multiple times for evaluating the assimilation degree of a specific course at the end of the course. The data recorded for the period 2017–2023 with about 1400 distinct users were used to analyze the performance of the evaluation system. The system worked fine and a slight modification of it served well on remote evaluation during COVID-19 period. However, the upturn of mobile phone applications requires the creation of a system adapted to the new virtual reality.
  • Least Squares for Generalized Gauss–Laplace Distribution of the Error in Certain Nonlinear Regressions with Perpendicular Offsets
    Carmen E. Stoenoiu, Lorentz Jäntschi
    Springer Proceedings in Mathematics and Statistics, 2024
  • Is triple crossed C28 cyclic polyyne cluster a stable conformation?
    Carmen E. Stoenoiu, Mihai V. Putz, Lorentz Jäntschi
    Fullerenes Nanotubes and Carbon Nanostructures, 2024
  • Generalized high-order iterative methods for solutions of nonlinear systems and their applications
    G Thangkhenpau, Sunil Panday, Bhavna Panday, Carmen E. Stoenoiu, Lorentz Jäntschi
    Aims Mathematics, 2024
    <abstract><p>In this paper, we have constructed a family of three-step methods with sixth-order convergence and a novel approach to enhance the convergence order $ p $ of iterative methods for systems of nonlinear equations. Additionally, we propose a three-step scheme with convergence order $ p+3 $ (for $ p\\geq3 $) and have extended it to a generalized $ (m+2) $-step scheme by merely incorporating one additional function evaluation, thus achieving convergence orders up to $ p+3m $, $ m\\in\\mathbb{N} $. We also provide a thorough local convergence analysis in Banach spaces, including the convergence radius and uniqueness results, under the assumption of a Lipschitz-continuous Fréchet derivative. Theoretical findings have been validated through numerical experiments. Lastly, the performance of these methods is showcased through the analysis of their basins of attraction and their application to systems of nonlinear equations.</p></abstract>
  • Accelerating the Convergence in the Identification of PV Cells Parameters
    Carmen Elena Stoenoiu, Lorentz Jäntschi
    Proceedings 2023 International Conference on Computational Science and Computational Intelligence Csci 2023, 2023
    The current trend in energy sources is towards the large-scale use of small-scale photovoltaic (PV) systems for local energy supply. The today's common commercial PV systems today include PV cells of various manufactures and origins based mostly on a large-area p-n junction made of silicon. The characteristic equation describes the non-linear dependence between current and voltage and the parameters values of the characteristic equation define the working regime of the PV system. Parameters identification involves a series of iterations in which the sum of squared errors is minimized (and thus the chance of observation is maximized). A large number of iterations are required if the optimization follows the usual course from the solution proposed by the vertical offsets to the perpendicular offsets. In the present work, an intermediate solution is used to speed up the convergence.
  • A Computer Based Evaluation System: Design, Implementation and Results on General Chemistry
    Carmen Elena Stoenoiu, Lorentz Jäntschi
    Proceedings 2023 International Conference on Computational Science and Computational Intelligence Csci 2023, 2023
  • Simultaneous Determinations for the Internal Resistance of Three Batteries. Three Analytical Methods Involved
    Carmen E. STOENOIU, Lorentz JÄNTSCHI
    Proceedings of 2023 10th International Conference on Modern Power Systems Mps 2023, 2023
  • Sustainable Development—A Path to a Better Future
    Carmen Elena Stoenoiu
    Sustainability Switzerland, 2022
  • Renewable energy in European countries, retrospective analysis
    C E Stoenoiu, I Birou, C Cristea, F M Serban
    Iop Conference Series Earth and Environmental Science, 2021
  • Evolution of renewable energy consumption in the European countries
    C E Stoenoiu, M C Balan, F M Serban, C Cristea
    Iop Conference Series Earth and Environmental Science, 2021
  • The Evolution of Efficiency Indicators in the Economies of European Countries
    Stoenoiu Carmen-Elena
    Sielmen 2021 Proceedings of the 11th International Conference on Electromechanical and Energy Systems, 2021
  • Retrospective analysis of the evolution of industrial production in relation to energy consumption
    Carmen-Elena Stoenoiu
    Sielmen 2021 Proceedings of the 11th International Conference on Electromechanical and Energy Systems, 2021
  • Performance analysis of grid-connected rooftop solar photovoltaic systems using different photovoltaic technologies: A case study in Romania
    Ciprian Cristea, Maria Cristea, Radu-Adrian Tirnovan, Iulian Birou, Carmen Elena Stoenoiu, et al.
    Sielmen 2021 Proceedings of the 11th International Conference on Electromechanical and Energy Systems, 2021
  • The analysis of government expenditures in the european union
    F. M. Șerban, Romania Drives, C. Stoenoiu
    Problemy Ekorozwoju, 2020
  • Sensitivity of indicators used in cost-volume-profit analysis
    Carmen-Elena Stoenoiu
    Matec Web of Conferences, 2018
  • Comparative analysis for estimating production costs
    Carmen-Elena Stoenoiu
    Matec Web of Conferences, 2018
  • Pattern of energy productivity and gross domestic product among european countries
    Problemy Ekorozwoju, 2018
  • Patterns in enterprise management software
    Carmen Elena Stoenoiu
    Balkan Region Conference on Engineering and Business Education, 2017
  • Role of academic community in defining professional route: Students' perception
    Actual Problems of Economics, 2010
  • Students perception of degree of academic community involvement in academic life
    Actual Problems of Economics, 2009

RECENT SCHOLAR PUBLICATIONS

  • Connecting the Characteristic Elements in the Accounting Profession-from the Perspective of New Technological Changes
    CE Stoenoiu
    Accounting and Finance Review 11 (1), 1 , 2026
    2026
  • Quantum symmetric analysis of interval-valued mappings based on generalized Hukuhara differences
    MZ Javed, MU Awan, CE Stoenoiu, DA Iluțiu-Varvara, L Jäntschi, ...
    Journal of Mathematics and Computer Science 40 (1), 1-21 , 2026
    2026
  • Latent Dimensions of Innovation and Development in Selected Eastern European Countries: A Perspective Based on an Analysis of the Main Factors
    CE Stoenoiu, L Jäntschi
    World 6 (4), 161 , 2025
    2025
    Citations: 1
  • Perspectives on the development of digital techniques and tools with implications for accounting and financial audit services.
    CE Stoenoiu
    Journal of Finance & Banking Review (JFBR) 10 (3) , 2025
    2025
  • Figures of Cramér-von Mises statistic for continuous distributions
    CE Stoenoiu
    Biomath Communications Supplement , 2025
    2025
  • Connecting the Computer Skills with General Performance of Companies—An Eastern European Study
    CE Stoenoiu, L Jäntschi
    Sustainability 16 (22), 10024 , 2024
    2024
    Citations: 14
  • ANALYSIS OF THE PERFORMANCE OF SOME ECONOMIES ACCORDING TO THE SIZE CLASS OF THE ENTERPRISES
    CE STOENOIU, L JÄNTSCHI
    ACTA TECHNICA NAPOCENSIS-Series: APPLIED MATHEMATICS, MECHANICS, and … , 2024
    2024
  • Sustainable Development of the Economy—A Case Study of the Impacts of the Size of Enterprises and Factors Affecting Performance
    CE Stoenoiu, L Jäntschi
    Sustainability 16 (13), 5376 , 2024
    2024
    Citations: 4
  • A new adaptive eleventh-order memory algorithm for solving nonlinear equations
    S Panday, SK Mittal, CE Stoenoiu, L Jäntschi
    Mathematics 12 (12), 1809 , 2024
    2024
    Citations: 5
  • Circular Economy Similarities in a Group of Eastern European Countries: Orienting towards Sustainable Development
    CE Stoenoiu, L Jäntschi
    Sustainability 16 (4), 1593 , 2024
    2024
    Citations: 13
  • Is triple crossed C 28 cyclic polyyne cluster a stable conformation?
    CE Stoenoiu, MV Putz, L Jäntschi
    Fullerenes, Nanotubes and Carbon Nanostructures 32 (1), 55-67 , 2024
    2024
    Citations: 5
  • A COMPUTER-BASED EVALUATION SYSTEM: ITS DESIGN, IMPLEMENTATION AND RESULTS OBTAINED ON A GENERAL CHEMISTRY COURSE
    CE STOENOIU, L JÄNTSCHI
    JOURNAL OF INFRASTRUCTURE, POLICY AND DEVELOPMENT 8 (11), 8839 , 2024
    2024
    Citations: 1
  • Generalized high-order iterative methods for solutions of nonlinear systems and their applications
    G Thangkhenpau, S Panday, B Panday, CE Stoenoiu, L Jäntschi
    AIMS Math 9 (3), 6161-6182 , 2024
    2024
    Citations: 8
  • A computer based evaluation system: design, implementation and results on general chemistry
    CE Stoenoiu, L Jäntschi
    2023 International Conference on Computational Science and Computational … , 2023
    2023
    Citations: 2
  • Accelerating the convergence in the identification of PV cells parameters
    CE Stoenoiu, L Jäntschi
    2023 International Conference on Computational Science and Computational … , 2023
    2023
  • Least Squares for Generalized Gauss–Laplace Distribution of the Error in Certain Nonlinear Regressions with Perpendicular Offsets
    CE Stoenoiu, L Jäntschi
    International Conference on Mathematical Modeling in Physical Sciences, 153-162 , 2023
    2023
  • Simultaneous Determinations for the Internal Resistance of Three Batteries. Three Analytical Methods Involved
    CE STOENOIU, L JÄNTSCHI
    2023 10th International Conference on Modern Power Systems (MPS), 01-05 , 2023
    2023
    Citations: 1
  • Analysis and evaluation of the risk of non-competitiveness
    CE Stoenoiu, C Cristea, FM Serban
    IOP Conference Series: Materials Science and Engineering 1256 (1), 012030 , 2022
    2022
  • Reducing the Economic Risk and Increasing the Operational Profit
    CE Stoenoiu
    IOP Conference Series: Materials Science and Engineering 1256 (1), 012029 , 2022
    2022
  • Sustainable development—A path to a better future
    CE Stoenoiu
    Sustainability 14 (15), 9192 , 2022
    2022
    Citations: 20

MOST CITED SCHOLAR PUBLICATIONS

  • Sensitivity of indicators used in cost-volume-profit analysis
    CE Stoenoiu
    MATEC Web of Conferences 184, 04003 , 2018
    2018
    Citations: 21
  • Sustainable development—A path to a better future
    CE Stoenoiu
    Sustainability 14 (15), 9192 , 2022
    2022
    Citations: 20
  • Connecting the Computer Skills with General Performance of Companies—An Eastern European Study
    CE Stoenoiu, L Jäntschi
    Sustainability 16 (22), 10024 , 2024
    2024
    Citations: 14
  • Circular Economy Similarities in a Group of Eastern European Countries: Orienting towards Sustainable Development
    CE Stoenoiu, L Jäntschi
    Sustainability 16 (4), 1593 , 2024
    2024
    Citations: 13
  • National trends on agricultural crops production: Cluster analysis
    L JÄNTSCHI, SD Bolboaca, CE Stoenoiu
    Bulletin of University of Agricultural Sciences and Veterinary Medicine … , 2007
    2007
    Citations: 12
  • Comparative analysis for estimating production costs
    CE Stoenoiu
    MATEC Web of Conferences 184, 04004 , 2018
    2018
    Citations: 10
  • Mobile Phase Optimization Method for Steroids Separation
    CE Stoenoiu, SD Bolboacă, L Jäntschi
    Applied Medical Informatics 18 (1-2), 17-24 , 2006
    2006
    Citations: 10
  • Generalized high-order iterative methods for solutions of nonlinear systems and their applications
    G Thangkhenpau, S Panday, B Panday, CE Stoenoiu, L Jäntschi
    AIMS Math 9 (3), 6161-6182 , 2024
    2024
    Citations: 8
  • Linking assessment to e-learning in microbiology and toxicology for undergraduate students
    L Jantschi, CE Stoenoiu, SD Bolboaca
    EUROCON 2007-The International Conference on" Computer as a Tool", 2447-2452 , 2007
    2007
    Citations: 8
  • Performance analysis of grid-connected rooftop solar photovoltaic systems using different photovoltaic technologies: a case study in Romania
    C Cristea, M Cristea, RA Tirnovan, I Birou, CE Stoenoiu, FM Șerban
    2021 International Conference on Electromechanical and Energy Systems … , 2021
    2021
    Citations: 7
  • Molecular descriptors family on vertex cutting: relationships between acelazolamide structures and their inhibitory activity
    SD Bolboacă, MM Marta, CE Stoenoiu, L Jäntschi
    Applied Medical Informatics 25 (3, 4), 65-74 , 2009
    2009
    Citations: 7
  • A new adaptive eleventh-order memory algorithm for solving nonlinear equations
    S Panday, SK Mittal, CE Stoenoiu, L Jäntschi
    Mathematics 12 (12), 1809 , 2024
    2024
    Citations: 5
  • Is triple crossed C 28 cyclic polyyne cluster a stable conformation?
    CE Stoenoiu, MV Putz, L Jäntschi
    Fullerenes, Nanotubes and Carbon Nanostructures 32 (1), 55-67 , 2024
    2024
    Citations: 5
  • The analysis of government expenditures in the European union
    FM Serban, CE Stoenoiu, C Cristea
    Problemy Ekorozwoju 15 (2), 143-151 , 2020
    2020
    Citations: 5
  • Pattern of Energy Productivity and Gross Domestic Product Among European Countries
    CE Stoenoiu
    Problemy Ekorozwoju 13 (2), 113-123 , 2018
    2018
    Citations: 5
  • Sustainable Development of the Economy—A Case Study of the Impacts of the Size of Enterprises and Factors Affecting Performance
    CE Stoenoiu, L Jäntschi
    Sustainability 16 (13), 5376 , 2024
    2024
    Citations: 4
  • Model formulation & interpretation-from experiment to theory
    CE Stoenoiu, SD Bolboaca, L Jäntschi
    Int. J. Pure Appl. Math 47, 9-16 , 2008
    2008
    Citations: 4
  • Renewable energy in European countries, retrospective analysis
    CE Stoenoiu, I Birou, C Cristea, FM Serban
    IOP Conference Series: Earth and Environmental Science 664 (1), 012019 , 2021
    2021
    Citations: 3
  • Evolution of renewable energy consumption in the European countries
    CE Stoenoiu, MC Balan, FM Serban, C Cristea
    IOP Conference Series: Earth and Environmental Science 664 (1), 012018 , 2021
    2021
    Citations: 3
  • The role of the academic community in defining the professional route: students' perception
    CE Stoenoiu, SD Bolboacă, I Abrudan, L Jäntschi
    Actual Problems of Economics 103 (1), 277-285 , 2010
    2010
    Citations: 3