Search Everything
Tip: Search using "First Name + Last Name", e.g.
János Kiss instead of
Kiss János.
Authors - 10602
Publications - 6674
2022 Düzce, Türkiye earthquake: advances in the past 2 decades, lessons learned, and future projections
Publication Name: Bulletin of Earthquake Engineering
Publication Date: 2024-09-01
Volume: 22
Issue: 11
Page Range: 5835-5862
Description:
In the year 1999, two devastating earthquakes (Mw 7.4 Kocaeli earthquake in August and Mw 7.2 Düzce earthquake in November) occurred in Northwest Türkiye. These two earthquakes led to a very large number of casualties and building collapses. When the 1999 earthquakes occurred, most of the structures in the earthquake-impacted region were not designed according to modern seismic design codes. During the 25 years following those earthquakes, there have been significant advances in building construction in the light of earthquake engineering, including adequate seismic codes, new regulations, and effective code enforcement in the earthquake impacted region. These advances have been reflected in the construction of new structures in the region and the retrofitting of existing ones. As a result, 70–80% of the current building stock in Düzce was designed, constructed, or retrofitted after the 1999 earthquakes. Almost 23 years later, in 2022, an Mw 6.1 earthquake occurred in Düzce, with ground shaking close to the seismic design code life safety performance level. The 2022 earthquake provided a great opportunity to evaluate the effectiveness and consequences of the advances in earthquake engineering and the relevant policy-making and regulations. This paper provides a comparative overview of the 1999 and 2022 earthquakes that struck the city of Düzce in terms of hazard, vulnerability, and consequences. Furthermore, other key lessons learned from the 2022 Düzce earthquake are documented based on field reconnaissance and numerical simulations. The lessons learned are expected to provide useful guidance for the reconstruction efforts after the 2023 Kahramanmaraş Türkiye earthquake sequence or in similar efforts in other parts of the world.
Open Access: Yes
Toward a Theoretical Framework for Digital Twin Readiness Assessment in Logistics: Conceptualization and Model Development †
Publication Name: Engineering Proceedings
Publication Date: 2025-01-01
Volume: 113
Issue: 1
Page Range: Unknown
Description:
Digital Twins provide comprehensive capabilities to solve critical logistics problems such as visibility, monitoring, optimization, prediction, and simulation. This study explores the existing DT readiness assessment models in SCs and logistics, discovers their limitations, and proposes a conceptual model based on an organization’s internal and external attributes to strategize DT implementation in logistic functions. The results showed that the existing readiness assessment models have weaknesses and drawbacks, motivating the researchers to develop a new logistic DT readiness assessment model. This study identified six main organizational dimensions directly affecting measuring overall logistics’ DT readiness, which are management readiness, personnel readiness, information readiness, organization readiness, product readiness, and process flow readiness. Their relationship is mediated by Technology Integration and moderated by Supply Chain Complexity, which was tested using partial least squares structural equation modeling to show the importance of strategizing DT implementation in logistics.
Open Access: Yes
Damping of Dry Sand in Resonant Column-Torsional Simple Shear Device
Publication Name: Sustainability Switzerland
Publication Date: 2023-07-01
Volume: 15
Issue: 14
Page Range: Unknown
Description:
The damping ratio values of three different Danube sands were measured in the Resonant Column-Torsional Simple Shear device (RC-TOSS). The distinctive configuration of the RC-TOSS device employed in this investigation enabled the performance of both tests using a single sample. This research estimates and compares the damping ratio values measured with three distinct methods (two of which are in the RC test): The Free Vibration Decay (FVD), the Steady-State Vibration (SSV) methods, and the method of calculating the damping ratio from the hysteretic loops generated in the TOSS test. Both dense and loose samples were tested up to a peak-to-peak amplitude shear strain of 1%. The device provides measurements over a wide range of shear strain amplitudes. The results support the employment of the SSV methods at low strains (below 0.005%), while the FVD method gives a better estimate at higher strains (above 0.03%). The two methods and the TOSS results are in agreement with each other between 0.005% and 0.03%. The effect of the number of cycles on the damping ratio was investigated where a significant decrease was observed in the damping ratio with an increasing number of cycles. A parameter is introduced to describe the rate of this decrease, which should be considered during the structural design to reduce maintenance and life-cycle costs and enhance sustainability.
Open Access: Yes
DOI: 10.3390/su151411060
Mapping the research landscape of blockchain and crowdfunding
Publication Name: Financial Innovation
Publication Date: 2025-12-01
Volume: 11
Issue: 1
Page Range: Unknown
Description:
Blockchain technology and crowdfunding (CF) have emerged as disruptive forces in the finance and entrepreneurship landscape, potentially transforming traditional modes of capital raising and investment. This study investigates the intersection of blockchain technology and CF to provide a comprehensive overview of the current state of research through a systematic literature review and bibliometric analysis. By examining 219 publications sourced from Scopus, this study employed descriptive statistics, article co-citations, and keyword co-occurrence to identify key bibliometric indicators, themes, and trends. The findings reveal a surge in research activity related to blockchain and CF, emphasizing initial cryptocurrency offerings, financial technology (Fintech), and the role of blockchain in improving transactional efficiency, disintermediation, and venture capital CF. Keyword co-occurrence analysis reveals diverse research themes, including smart contracts, fundraising campaigns, sustainable entrepreneurship, and Islamic Fintech. Based on the findings of this analysis, several implications and directions for further investigation are highlighted. To the best of our knowledge, this is the first attempt to analyze the intersection of blockchain technology and CF using scientometric techniques systematically.
Open Access: Yes
Optimizing adhesion in aluminum alloys: A cross-disciplinary approach to surface treatment and bond strength
Publication Name: International Journal of Adhesion and Adhesives
Publication Date: 2025-09-01
Volume: 142
Issue: Unknown
Page Range: Unknown
Description:
As the use of aluminum structures grows due to their lightweight properties and sustainability advantages, optimizing bonding technologies is essential for ensuring strong and durable joints. This study systematically evaluates fourteen surface treatment methods applied to aluminum sheets and L-section joints, assessing their influence on adhesion performance. Surface preparation significantly impacted bond strength. Veil sanding combined with Sika® Primer-207 led to an 82 % increase in tensile strength and a 258 % increase in shear strength compared to untreated surfaces. Laser and hot deionized water treatments resulted in the highest measured surface energy (88 mN/m), improving wettability and adhesive-substrate interaction. To analyze bonding performance, a flexible polyurethane adhesive was applied to structural joints, which were tested under tensile and shear stress conditions. The results demonstrated that surface roughness, free energy, and chemical modification strongly influence failure modes. While untreated surfaces predominantly exhibited adhesive failure, optimized treatments shifted failure toward cohesive failure, indicating a stronger interfacial bond. Additionally, the correlation between surface free energy, surface roughness, and adhesive strength was examined to understand their combined effects on joint performance. The findings highlight the importance of selecting appropriate surface modification techniques to maximize adhesion and joint durability. This research provides practical insights for industries relying on aluminum bonding, offering guidance on optimizing surface treatment protocols to enhance structural integrity and long-term reliability in demanding applications.
Open Access: Yes
Bibliometric mapping of brand activism: trends, themes, and trajectories
Publication Name: International Review on Public and Nonprofit Marketing
Publication Date: 2026-06-01
Volume: 23
Issue: 2
Page Range: 449-477
Description:
The concept of brand activism has recently emerged as a distinct phenomenon, garnering increasing scholarly interest. However, research in this area is still in its infancy, characterized by fragmented studies and a lack of cohesive theoretical frameworks. This review aims to analyze the prevailing research patterns in brand activism by classifying the essential attributes of publications. Using specified search criteria, the Scopus database was used to find, extract, select, and review relevant publications from 1984 to 2025. In the search, 259 publications were selected for this study after application of the exclusion and inclusion criteria. This bibliometric analysis is based on performance analysis and science mapping. The results reveal the most influential papers, authors, journals, and nations in this study area. The findings suggest that brand activism research is multidisciplinary, encompassing business ethics, psychology, public policy, management, and marketing. The study identified six thematic clusters: Corporate Political Advocacy and Institutional Change; Consumer Ethical Responses and Brand-Directed Activism; Societal Impact of Brand Activism; Market–Society Tensions in Brand Activism; Moral Emotional Responses to Brand Activism; Authenticity, Credibility, and Competitive Outcomes of Brand Advocacy. These themes highlight their applications, ranging from directing corporate political advocacy and stakeholder alignment on socio-political issues to enhancing authenticity, credibility, and the competitive outcomes of brand activism. The implications of this research emphasize brand activism as a strategic approach that links corporate values to societal requirements to create social change in an increasingly polarized marketplace. This study is novel in presenting a comprehensive bibliometric and science-mapping of brand activism research to date, providing key takeaways, outlining future research directions, and motivating scholars to explore this phenomenon further.
Open Access: Yes
Developing a Framework for Multi-hazard and Risk Assessment, Darbandikhan Dam, Iraq
Publication Name: Advances in Science Technology and Innovation
Publication Date: 2025-01-01
Volume: Unknown
Issue: Unknown
Page Range: 529-533
Description:
Multi-purpose dams play a significant role in water resources management and flood protection by storing and releasing water for a sufficient water supply. Significantly, numerous dam failures are observed in multiple regions. Natural hazards related to dams include extreme floods, drought events, earthquakes, and geological conditions. There are also human-induced impacts, such as inadequate dam operation or maintenance. Numerous studies simulate potential natural extreme events to address the wide-ranging consequences encompassing loss of human life, economic losses, and environmental effects. In addition, international commissions and federal agencies recommend and apply a general framework for dam safety and risk assessment. The current study suggests and develops a flexible framework for multi-hazard indices and risk assessment for Darbandikhan Dam, Iraq, which was impacted by successive extreme climate events, besides a strong earthquake (M 7.3) that occurred on November 12, 2017. Consequently, the earthquake led to various impacts along the dam site, including horizontal and vertical displacement in some places. In addition, consecutive years of drought led to significant shortage inflows to the dam reservoir. The current study methodology focuses on developing a multi-hazard index and risk assessment framework for each potential extreme event and failure mode scenario associated with dam operation and safety. The information required for the particular framework is through integrating the observed with a global dataset based on Geographic Information System and Remote Sensing techniques. Nevertheless, using different tools and models in dataset processing provides the acquisition of the essential input data associated with each probable severe event. The outcomes of the suggested framework will show through multi-hazard maps the affected areas (hotspots) and propagation consequences besides the residual risk and system response for each scenario. In conclusion, developing a framework of multi-hazards risks associated with dam operation provides promising outcomes for risk assessment, warning response, and evacuation tasks based on hazard maps with different spatial and temporal resolutions. In addition, the framework can be used as an assistance tool for decision support systems, planning, and environmental protection associated with multi-purpose dam operation and safety.
Open Access: Yes
THE FINANCIAL SUSTAINABILITY OF ROBOT-ASSISTED SURGERY (RAS)
Publication Name: Transformations in Business and Economics
Publication Date: 2025-01-01
Volume: 24
Issue: 3A
Page Range: 604-623
Description:
In a previous study, it was concluded that the da Vinci robotic systems installed in the Hungarian healthcare system were, with one privately funded exception, fully financed by EU funds. The present article drives a similar conclusion on a global scale. Massive public investments, or reimbursements, are needed to ensure the prevalence and financial sustainability of robotic surgical systems. The financial sustainability of RAS depends on the economic development of a country and its healthcare system, the number of medical schools, the history of robotic surgery and the funding mechanisms of the healthcare system. Even in the most advanced economies of the world, access to the benefits of RAS may be burdened by limitations in terms of financial (funding) and geographical access.
Open Access: Yes
DOI: DOI not available
Data-driven lifetime estimation of solder joints with various geometries
Publication Name: Pollack Periodica
Publication Date: 2026-08-01
Volume: 21
Issue: 2
Page Range: 14-19
Description:
Virtual lifetime estimation of microelectronic devices has become essential, due to the tightening requirements and the trend of electronification. Thermal cycling load cause fatigue crack in solder joints and therefore functional failures. The application of the fatigue models viable in the literature is circumstantial for industrial scale problems. The exploitation of the already existing simulation data in data-driven models is a promising solution for speeding up the virtual lifetime estimation process. This paper benchmarks data-driven methods to predict the lifetime of solder joints with different geometric properties using a dataset originated from finite element simulation results. This case study shows that the nonlinear function fitting and the neural network are applicable.
Open Access: Yes
