Browsing by Author "Streimikis, Justas"
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- ItemA comparative analysis of multivariate approaches for data analysis in management sciences(Technická Univerzita v Liberci, ) Ahmed, Rizwan Raheem; Streimikiene, Dalia; Streimikis, Justas; Siksnelyte-Butkiene, Indre; Ekonomická fakultaThe researchers use the SEM-based multivariate approach to analyze the data in different fields, including management sciences and economics. Partial least square structural equation modeling (PLS-SEM) and covariance-based structural equation modeling (CB-SEM) are powerful data analysis techniques. This paper aims to compare both models, their efficiencies and deficiencies, methodologies, procedures, and how to employ the models. The outcomes of this paper exhibited that the PLS-SEM is a technique that combines the strengths of structural equation modeling and partial least squares. It is imperative to know that the PLS-SEM is a powerful technique that can handle measurement error at the highest levels, trim and unbalanced datasets, and latent variables. It is beneficial for analyzing relationships among latent constructs that may not be candidly witnessed and might not be applied in situations where traditional SEM would be infeasible. However, the CB-SEM approach is a procedure that pools the strengths of both structural equation modeling and confirmatory factor analysis. The CB-SEM is a dominant multivariate technique that can grip multiple groups and indicators; it is beneficial for analyzing relationships among latent variables and multiple manifest variables, which can be directly observed. The paper concluded that the PLS-SEM is a more suitable technique for analyzing relations among latent constructs, generally for a small dataset, and the measurement error is high. However, the CB-SEM is suitable for analyzing compound latent and manifest constructs, mainly when the goal is to generalize results to specific population subgroups. The PLS-SEM and CB-SEM have specific efficiencies and deficiencies that determine which technique to use depending on resource availability, the research question, the dataset, and the available time.
- ItemTHE COMPETENCY-BASED TRAINING & ASSESSMENT, AND IMPROVEMENT OF TECHNICAL COMPETENCIES AND CHANGES IN PEDAGOGICAL BEHAVIOR(Technická Univerzita v Liberci, ) Khan, Saba; Ahmed, Rizwan Raheem; Streimikiene, Dalia; Streimikis, Justas; Jatoi, Munsif Ali; Ekonomická fakultaThis research aims to analyze the improvement of technical competencies and changes in pedagogical behavior on competency-based training and assessment. We developed a modified conceptual model with the help of previous literature. We examined the impact of competency-based training & assessment on traditional teaching methodologies, practical teaching strategies, technical knowledge, and pedagogical & technical components as outcome variables. We also incorporated behavior & psychological aspects of teachers as mediators in our modified conceptual model and examined the mediation between exogenous and endogenous variables. We have collected the data of 458 respondents using a modified structured questionnaire from public and private teachers of Sindh technical and vocational institutions online from different regions of Sindh, Pakistan. For the data analyses, we employed SEM-based multivariate techniques. The findings exhibit that the direct relationship between competency-based training & assessment (independent variable) has a significant and positive influence on traditional teaching methodologies, practical teaching strategies, technical knowledge, and pedagogical & technical components as outcome variables. Similarly, the findings further concluded that behavior & psychological aspects are potent mediators between competency-based training & assessment and traditional teaching methodologies, teaching-learning abilities, practical teaching strategies, technical knowledge, and pedagogical & technical components as outcome variables. Hence, the behavior & psychological aspects of teachers is a vital factor that accelerates the impact of competency-based training & assessment on the dependent variables. The outcomes of this research are imperative theoretical and practical implications, which may guide the direction of future researchers and policymakers of vocational training and education.
- ItemPolicies to promote Corporate social responsibility (CSR) and assessment of CSR impacts(Technická Univerzita v Liberci, 2019-03-15) Lu, Jintao; Ren, Licheng; Lin, Wenfang; He, Yifan; Streimikis, Justas; Ekonomická fakultaThe Corporate social responsibility (CSR) concept is linked to the company’s responsibility for its impact on the society. The CSR is important for sustainability, competitiveness and innovation of the economy of each country and is tightly linked to the success in approaching Sustainable Development Goals (SDG) by the world countries. SDGs provide many benefits and opportunities for companies and in terms of risk management, increase the access to capital, improvement of stakeholders’ relationships etc. The literature on CSR has shifted from analysing the questions on whether companies should engage in societal challenges to whether and how countries and people benefit from these interventions in addressing sustainable development challenges, such as poverty, education, health, energy and environment. The recent scientific discussion on the assessment of CSR impacts provides contradictory results and findings. Therefore, this paper aims to shed more light on this issue and provide clear policy recommendations based on the conducted analysis. The paper analyses and compares the main policies that are aiming at the promotion of CSR, including reporting initiatives and requirements. The measures to assess the impact of CSR are discussed as well based on various reporting incentives that are guiding companies on how to assess and actually measure the effects of their activities by setting quantitative indicators. The dynamics of socially responsible companies and sustainability reporting initiatives are provided by indicating the effectiveness of the implemented policies and other initiatives to promote the CSR; however; the main emphasis of the paper is the impact of CSR on the societal challenges such as Sustainable Development Goals and integration of SDGs in the CSR assessment.
- ItemSustainability criteria assessment for life-cycle phases of petroleum refinery projects by MADM technique(Technická Univerzita v Liberci, ) Gholipour, Yaghob; Hasheminasab, Hamidreza; Kharrazi, Mohammad; Streimikis, Justas; Ekonomická fakultaPRI projects have large impacts on various sustainability attributes in different phases. A comprehensive assessment of these impacts for project’s life-cycle is of great importance. The proposed methodology has created the required framework for such assessment by using Concept Mapping, Focus Group, and Multi-Attribute Decision Making Techniques. Petroleum refinery industry (PRI) is comprised of a chain of expertise and engineering disciplines and is also connected to various other industries. Consequently, apart from its physical products that fulfill the fuel needs of the society, PRI has a great contribution to economic development and to the prosperity of different businesses. On the negative side, however, PRI is one of the primary contributors to global warming and other environmental issues and could have some unwelcome effects on the society as well. Hence, development of these projects should be done with careful assessment of their life-long impacts from a sustainability viewpoint. In this study, a sustainability framework for PRI projects, which was developed and presented in a previous publication, is used in a multiphase methodology to assess the relationship between life-cycle phases and sub-phases of a petroleum refinery on one hand, and sustainability indicators and factors on the other hand. As a result of this study, critical sustainability factors can be highlighted, to help managers and industry experts consider long-term sustainability consequences in their decision making process. The proposed methodology has been applied to a real petroleum refinery project, using an MADM-based scenario approach, to assess the correlation between sustainability factors and various life-cycle phases and sub-phases of the refinery. Based on the results, the most important phase in the petroleum refinery life-cycle with regards to all three pillars of sustainability is found to be the operation phase. As such, implementation of various operation phase sustainability aspects should be the first priority of stakeholders during design, procurement, construction, and operation phases.