1. Multilevel investigation of leadership prototype perception : political behavior in relation to effectiveness and trustAykut Arslan, 2024, original scientific article Abstract: Background/Purpose: Empirical evidence suggests that a leader’s political skills may act as a moderator that
might decrease the effect of prototypicality’s impact on trust and on leadership effectiveness. The study investigated leading political skills as second-level regulatory variables in connection to leader effectiveness and trust with the purpose of testing a cross-level moderated mediation model within a traditionally collectivist culture like Turkey in efforts to contextualize and expand understanding of leadership prototype perception.
Methods: A total of 442 service sector employees and 28 executive managers were interviewed. Two surveys in two
separate time periods were conducted. Multilevel path analysis was used to evaluate the hypotheses.
Results: The findings suggest that there is a strong and significant impact of leader prototypicality on leadership
effectiveness and a direct impact on trust. Results indicate that leaders who are trusted by their subordinates are
perceived as more effective in their leadership roles. Lower levels of trust from subordinates are negatively associated with leader effectiveness.
Conclusion: If leaders cannot provide their followers a contextualized sense of empowerment and development,
they are perceived to not provide high levels of emotional trust. Therefore, there is greater need for multilevel contextualized studies taking account of collective, two-sided, embedded experiences within groups. Keywords: leader political behavior, political skills, leader effectiveness, trust, social identity theory, Turkiye Published in DKUM: 14.08.2025; Views: 0; Downloads: 3
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2. Government effectiveness in the petroleum sector : two-step analysis combining linear regression and artificial neural networksBarbara Dorić, Dinko Primorac, Mirjana Pejić Bach, 2024, original scientific article Abstract: Background and Purpose: To encourage petroleum industry development, a country needs to set up a regulatory framework that standardizes investment conditions. The objective of the research was to investigate the determinants of government effectiveness in the petroleum sector. Design/Methodology/Approach: Multiple regression analysis was conducted to investigate if government effectiveness in the petroleum sector is influenced by the country’s political stability, regulatory quality, the intensity of petroleum exploration and production activities, government take, and type of contract used. Artificial neural network analysis was additionally conducted to identify the importance of independent variables. Results: Political stability, regulatory quality, government take attractiveness, and the intensity of petroleum activities positively influence government effectiveness. A more attractive government take enhances effectiveness, while the type of contract for awarding petroleum rights did not significantly impact effectiveness. Artificial neural network analysis revealed that the most important variables were regulatory quality and political stability. Conclusion: The research concluded that political stability, regulatory quality, and the intensity of petroleum activities are key factors in enhancing government effectiveness in the petroleum sector. These findings have practical implications, as they emphasize the importance of stable and well-regulated environments for achieving higher government effectiveness in the petroleum industry. This equips policymakers and industry professionals with actionable insights for improving the sector’s performance. Keywords: energy policy, petroleum sector, government effectiveness, industry development Published in DKUM: 13.08.2025; Views: 0; Downloads: 2
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3. Effectiveness of communication tools in Slovak enterprises before and during the Covid-19 pandemicDenisa Malá, 2024, original scientific article Abstract: Background and purpose: The Covid-19 pandemic brought about a shift in the way businesses operate, accelerating the adoption of digital communication tools. The study examines the effectiveness of communication tools in Slovak enterprises, comparing the dynamics before and during the pandemic. The study highlights the need for businesses to address communication-related issues. Methodology: An electronic questionnaire was used to collect the data. The representative survey sample consisted of 555 respondents. The results of the research were processed using the statistical tools McNemar Test, Pearsons Chi square test and Cramer’s V. Results: Before the pandemic, Slovak enterprises relied on traditional means of communication, with face-to-face meetings, phone calls and emails being the primary means of interaction. However, when the pandemic forced people to work from home, dependence on digital communication tools such as video conferencing and collaboration platforms increased significantly. Conclusion: The research findings indicate that during the pandemic, businesses recognized the importance of digital communication tools for sustaining business operations and employee collaboration. In conclusion, the Covid-19 pandemic was a catalyst for the transformation of communication practices in Slovak enterprises. The findings emphasise the continued importance of digital communication tools in the post-pandemic era and the need for businesses to strike a balance between traditional and digital communication methods in order to optimise overall effectiveness. Keywords: communication, communication tools, effectiveness, Slovak companies, Covid-19 Published in DKUM: 13.08.2025; Views: 0; Downloads: 1
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4. Having each other’s back : the mediating role of supportive behaviours in the relationship between team autonomy and team effectivenessJoana Alexandrino, 2024, original scientific article Abstract: Background and Purpose: Incorporating autonomy in teams has been an increasingly popular practice, but the mechanisms that make autonomous teams effective still need to be completely understood. Adopting a multidimensional approach to team effectiveness, the aim of this study was to analyse the mediating role of team members’ supportive behaviours in the relationship between team autonomy and team effectiveness (team performance, team viability, quality of group experience and team process improvement). Methods: This research adopts a group-level analysis with a sample of 90 teams of 40 organisations from different sectors. Regression analysis was used to analyse the data, namely the product of the coefficients method. Results: A positive relationship between team autonomy and supportive behaviours, which, in turn, is positively related to the four criteria of team effectiveness, was found, suggesting that supportive behaviours are a team process that explains the relationship between team autonomy and team effectiveness. Conclusion: This research enriches our knowledge of the antecedents of team effectiveness and explains the mechanisms through which team autonomy relates to team effectiveness, encouraging organisations to incorporate autonomy into teams’ design to enhance supportive behaviours and team effectiveness. Keywords: work teams, team autonomy, team effectiveness, supportive behaviours, quality of group experience, team performance Published in DKUM: 11.08.2025; Views: 0; Downloads: 3
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5. Learning environment variables and the efficacy of student learning in secondary school in Abak local government, Akwa Ibom StateAbisola Oladeni Sakirudeen, Ekanem Uwe, 2020, original scientific article Abstract: Four research questions and four null hypotheses were formulated to guide the study. A simple random sampling technique was used in selecting 34 respondents from each 6 schools, with a sample size of 204 was selected from the population of 1,518. The instrument titled LEVSLEQ was used to elicit response from the respondent. The reliability of the research instrument yielded a co-efficient of 0.82. The data was analyzed using dependent t-test and was tested at .05 level of significance. The findings indicated that environmental variable studied influence students' learning effectiveness. Keywords: learning, environment, learning effectiveness, Students’, variables Published in DKUM: 19.06.2025; Views: 0; Downloads: 28
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6. A comprehensive approach in medical nutrition therapy for adults' weight loss management in LebanonMarie Therese Khalil, Joseph Matta, Mateja Videmšek, Damir Karpljuk, Maja Meško, 2020, original scientific article Abstract: The objective of the research is to identify the different factors of Lebanese culture that interfere with weight loss therapy and assist the field of nutrition in homogenising in a standardised manner the protocol of Medical Nutrition Therapy (MNT). The first part of the study is based on a literature review, and, in the second part, quantitative analysis was used. The research was conducted on 514 Lebanese adults via questionnaire. The analysis was performed with the AMOS (Version 22, IBM®, Amonk, NY, USA) statistical tool. For the analysis of correlations, chi-square and non-parametric tests were used. Variables affecting weight loss management were identified with the aid of seven hypotheses using structural equation modelling (SEM). Body shape and Body Mass Index (BMI) were found to be inter-related to cognitive behaviours toward food, lifestyle practices, medical conditions, food and beverages. In parallel, and based on the research results, younger adults, in particular women, have better BMI and look better in terms of body shape. Ageing has a direct impact on weight gain. Older people have a lower activity level, which is more prevalent among women, and they also prefer to eat typical Lebanese food. Habits, such as smoking, drinking alcohol, are directly related to obesity and some medical conditions. Low physical activity influences the problems related to body shape. For further studies, one should also include types of physical activities in terms of intensity and number of hours. This would assist the study in being more specified and credible toward the effect of exercise on weight loss management. Keywords: medical nutrition therapy, weight loss management, cost-effectiveness, anthropometry, culture, stress, physical activity Published in DKUM: 24.01.2025; Views: 0; Downloads: 10
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7. An experimental investigation of BPMN-based corporate communications modelingGregor Polančič, Boštjan Orban, 2023, original scientific article Abstract: Purpose
Despite corporate communications having an immense impact on corporate success, there is a lack of dedicated techniques for their management and visualization. A potential strategy is to apply business process management (BPM) approach with business process model and notation (BPMN) modeling techniques.
Design/methodology/approach
The goal of this study was to gain empirical insights into the cognitive effectiveness of BPMN-based corporate communications modeling. To this end, experimental research was performed in which subjects tested two modeling notations – standardized BPMN conversation diagrams and a BPMN extension with corporate communications-specific concepts.
Findings
Standard conversation diagrams were demonstrated to be more time-efficient for designing and interpreting diagrams. However, the subjects made significantly fewer mistakes when interpreting the diagrams modeled in the BPMN extension. Subjects also evolved positive perceptions toward the proposed extension.
Practical implications
BPMN-based corporate communications modeling may be applied to organizations to depict how formal communications are or should be performed consistently, effectively and transparently by following and integrating with BPM approaches and modeling techniques.
Originality/value
The paper provides empirical insights into the cognitive effectiveness of corporate communications modeling based on BPMN and positions the corresponding models into typical process architecture. Keywords: corporate communication, BPMN, controlled experiment, conversation diagrams, cognitive effectiveness, modeling Published in DKUM: 26.03.2024; Views: 224; Downloads: 30
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8. Effectiveness of health promotion interventions in primary schools : a mixed methods literature reviewJoca Zurc, Camilla Laaksonen, 2023, review article Abstract: School-based health promotion interventions (HPIs) are commonly used in schools, but scientific evidence about the structures of effective interventions is lacking. Therefore, we conducted a mixed methods systematic literature review to recognize the HPI structures related to their effectiveness. Based on the inclusion criteria, 49 articles were selected for the literature review. The articles, published in 2011–2022, described 46 different school-based interventions conducted in 20 different countries. The average duration of the interventions was 12 months, and they were implemented mostly with an RCT study design (61.2%) and by targeting children (69.4%). Three main groups of interventions were identified and explained: (1) extensive and long-term interventions; (2) school policy-changing interventions; and (3) highly effective interventions. Effective school-based HPIs included multiple target groups, multiple providers with external experts, and an efficient duration and timing of follow-ups. The implications for educational research and school practice are presented. Evidence on the effectiveness of health-related interventions is still lacking and needs to be addressed in further studies. Keywords: education, school health, health promotion, health education, intervention effectiveness, systematic literature review, mixed methods review Published in DKUM: 21.03.2024; Views: 299; Downloads: 35
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9. Improving comprehension of process diagrams with Graphical highlightsGregor Jošt, 2018, doctoral dissertation Abstract: The main purpose of business process diagrams is to facilitate the communication between the process-related stakeholders, which directly affects the decision-making. For this reason, they must be easy to understand. However, this is often challenging to achieve, since business process diagrams can become large and complex. This, in turn, can negatively affect their correctness and understandability. The goal of this doctoral thesis was to propose and investigate an approach that makes business process diagrams appear less complex, without changing the corresponding diagrammatic notation or the business process diagrams themselves. This was done by manipulating the opacity of graphical elements in order to emphasize the important parts of a business process diagram by lowlighting the irrelevant ones. The proposed solution, named Emphasis, implemented with opacity-based Graphical Highlight pattern, abbreviated as simply Graphical highlights, was subsequently applied to sample business process diagram, modeled in Business Process Model and Notation (BPMN). The analysis demonstrated that the structural complexity of the business process diagrams decreased when the proposed solution was applied. Afterwards, a Web application prototype was implemented, which supports the proposed set of Graphical highlights.
Furthermore, we empirically validated whether Graphical highlights positively impact cognitive effectiveness of business process diagrams, and if the users will find the prototype implementation useful. To this end, an experimental research, which included 85 participants, was conducted. The participants were randomly assigned in either the treatment group (Graphical highlights diagram representation approach), or the control group (conventional diagram representation approach). In accordance with the definition of cognitive effectiveness, speed, ease, and accuracy of answering 26 comprehension questions were observed, along with the perceived usefulness of the prototype. The results of the analysis demonstrated that participants who used Graphical highlights significantly outperformed those that used the conventional approach in all experiment's observations.
We can conclude that using Graphical highlights increases the cognitive effectiveness of business process diagrams, while the corresponding prototype implementation is perceived as being useful. Keywords: process diagrams, emphasis, graphical highlights, cognitive effectiveness, controlled experiment, prototype implementation, BPMN Published in DKUM: 21.12.2018; Views: 2454; Downloads: 173
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