In the ongoing discourse surrounding integrating QKD networks as a service for critical infrastructures, key storage design often receives insufficient attention. Nonetheless, it bears crucial significance as it profoundly impacts the efficiency of QKD network services, thereby shaping its suitability for diverse applications. In this article, we analyze the effectiveness of key storage designs developed through practical testbeds and propose a novel key storage design to increase the effectiveness of key creation and supply. All key storage designs underwent analysis using network simulation tools, and the findings demonstrate that the novel key storage design surpasses existing approaches in terms of performance.

Secure communication makes the widespread use of telecommunication networks and services possible. With the constant progress of computing and mathematics, new cryptographic methods are being diligently developed. Quantum Key Distribution (QKD) is a promising technology that provides an Information-Theoretically Secure (ITS) solution to the secret-key agreement problem between two remote parties. QKD networks based on trusted relay nodes are built to provide service to a larger number of parties at arbitrary distances. They function as an add-on technology to traditional networks, generating, managing, distributing, and supplying ITS cryptographic keys. Since key resources are limited, integrating QKD network services into critical infrastructures necessitates effective key management. As a result, this article provides a comprehensive review of key management approaches for trusted-relay QKD networks. They are analyzed to facilitate the identification of potential strategies and accelerate the future development of QKD networks.

This study investigates the perception of the implementation of the Farm to Table (F2T) concept on the sustainability of agritourism households in the Republic of Serbia. The main objective of the study is to determine how this concept affects the environmental, economic, and social sustainability of these households according to the participants. Data were collected through surveys of agritourism homestead owners in the regions of Vojvodina, Western Serbia, Southern Serbia, and Eastern Serbia. The research findings, obtained using quantitative (SEM) analyses, indicate that the F2T concept significantly contributes to the sustainable development of agritourism homesteads by increasing economic profitability, reducing environmental impact, and strengthening the social community. Moderators such as seasonal product availability, employee education, and the local community support have a significant impact on the effectiveness of F2T activities. The innovation of this study lies in the application of quantitative methods to analyze the specific impacts of the F2T concept on the sustainability of agritourism households, an area that has been poorly explored in the literature. The study has a number of implications, including providing empirical data that can help farmers, tourism operators, and policymakers to promote sustainable agritourism businesses.

This study presents a comprehensive and insightful exploration of climate justice and climate injustice and their social, geopolitical, legal, security, visual and moral dimensions. It contributes perspectives on the global climate crisis and its implications. Theoretically and practically, the paper adds insight into global climate and environmental processes, concepts of climate justice and injustice, environmental and human security, climate visuals, and legal and moral approaches to the observed topics. The study explores contemporary academic scientific literature's methodological trends and critical themes. Besides a meta-analysis, content analysis, thematic analysis, a descriptive method, and an in-depth literature review of various scientific and expert-based data forms, the study incorporated the representation and analysis of visual expressions of climate change consequences and injustice. It also included human-centric aspects and perceptions of youth climate activists. Accordingly, the paper analyzes the essence and goals of climate justice, the consequences of climate injustice, and the positions of wealthy and poorer countries - mainly and severely affected by climate change, and offers normative solutions. Climate injustice processes and occurrences generate social injustice, inequalities, inequities, and exclusions while jeopardizing critical human security.

Abstract Organizations are perpetually challenged to adapt and evolve in the increasingly complex and unpredictable public service landscape. Using two international case studies from Australia and New Zealand, this research examines the critical role of adaptive leadership in fostering resilience within public service entities, focusing on the integral role of ethics in disaster response. The research is grounded in the theory of adaptive leadership, which posits that contemporary organizational challenges require leadership to encourage adaptation and learning. The study explores how adaptive leadership, intertwined with ethical practices, contributes to creating resilient public service organizations capable of withstanding and evolving through crises, constant changes, and adversities. Through a detailed examination of the case studies affecting the general public and ethical considerations, the research unravels the intricacies of public administrators’ ethical dilemmas, concluding with reflections on the implications for public service ethics, integrity, and public trust. The study not only elucidates the symbiotic relationship between adaptive leadership and ethics in fostering organizational resilience but also charts a course for future policy formulation and leadership training programs, underscoring the indispensable role of ethical governance in navigating crises. PLAIN LANGUAGE SUMMARY This study investigates how leaders in government organizations best handle tricky situations like natural disasters. Adaptive leadership, which is flexible and encourages learning, is essential, especially when quick and innovative responses are necessary. For instance, after the disasters of bushfires in Australia or earthquakes in New Zealand, leaders who used this style were more successful in preparing for, managing, and recovering. This was partly due to their ethical approach, which focuses on fairness, transparency, and working for the common good. Ethical leadership is crucial because it builds trust within the community, which is especially important during crises. Leaders who communicate effectively, listen to the community, and engage with people’s concerns make better decisions for everyone involved. This article emphasizes that leaders who adapt and maintain strong values are vital for public service organizations to overcome challenges and serve the public effectively. Training future leaders in adaptive and ethical leadership is recommended to ensure organizations respond to challenges effectively and with the public’s interest at heart. This approach will prepare organizations to survive and thrive in adversity, building a resilient and trustworthy public service.

This article is linked to Aliu et al papers. To view these articles, visit https://doi.org/10.1111/apt.17988 and https://doi.org/10.1111/apt.18161

Abstract Objectives Restless legs syndrome (RLS) is a disease from the spectrum of movement disorders, the prevalence of which increases significantly during pregnancy and is associated with poor sleep, a drop in daytime energy, and the development of psychological disorders during pregnancy and the postpartum period. Methods The IRLSS scale was used to determine the presence of RLS symptoms. The total test sample that included the tested and control groups was (n=390) subjects. The examined group consisted of pregnant women (n=260), and the control group consisted of female students (n=130). In total, 260 pregnant women were monitored 6 months after pregnancy. Three measurements were performed, first in the third trimester of pregnancy, second two months after delivery, third 6 months after delivery, while one cross-sectional measurement was performed for the control group. Results The prevalence of RLS in pregnancy is highest in the third trimester and amounts to 26.5 %. In the postpartum period, a significant decrease in the prevalence of RLS was observed, measured two months after delivery (18.1 %). Postpartum, over time, a decrease in the prevalence of RLS was noticed, and six months after delivery it was (7.3 %), when it practically approached the prevalence of the control group (standard population) which was (6.2 %). Conclusions The prevalence of RLS is highest during the third trimester of pregnancy and decreases after delivery so that 6 months after delivery it approaches the prevalence of the standard population.

The floristic composition and ecological characteristics of the area where honey grazing is carried out directly define the botanical origin as well as the physical and chemical properties of honey. The goal of this research was to determine the potential of woody and shrubby plant species in the apiflora from Bosnia and Herzegovina (B&H) based on the qualitative-quantitative palynological analysis of honey samples. In the research, 100 different types of honey samples from B&H were collected and analyzed. The melissopalinological preparations were prepared and analyzed in accordance with the Rulebook on methods for the control of honey and other bee products of B&H, as well as the methods proposed by ICBB. After the melissopalinological analysis, 25 plant families with a total of 30,000 pollen grains were identified, of which 16 were woody or shrubby plants with 18,126 pollen grains in the preparations. In the research, the most presented honey-bearing woody plants were: black locust (Robinia pseudoacacia), chestnut (Castanea sativa) and linden (Tilia sp.). Each analyzed palynological profile represented a unique combination of pollen from honey-bearing plants, as a specific biological imprint of the place of honey grazing.

This research explores the initial attitudes of special educators towards socially assistive robots (SAR) and considers how cultural and socioeconomic backgrounds shape these attitudes. Special educators providing services to individuals with autism spectrum disorder (ASD) in the United States and Serbia were surveyed, representing distinct cultural and socioeconomic contexts. Comparing their attitudes offers valuable insights into facilitating SAR adoption for ASD treatment across different cultural landscapes. Additionally, this study conducts a comparative analysis of cultural dimensions in the two countries to contextualize attitudes toward SAR use in ASD treatment. A nonexperimental quantitative approach was employed utilizing a cross-sectional survey design with purposive samples of special educators who provide services to individuals with ASD in the U.S. and Serbia to establish initial attitudes toward SARs. The outcomes derived from this investigation reflect the pervasive influence of the cultural contexts. Apprehension has been identified as a significant factor shaping attitudes toward SAR adoption among the Serbian cohort, while a more favorable disposition towards this technology typifies the U.S. participants. The adoption and utilization of SARs, as reported by participants in the U.S., face relatively fewer attitudinal barriers.

Graphical abstract

The main applications of civil explosives in soils are soil compaction, mass excavation, and in situ pile creation. The suitability of explosives for each of these applications strongly depends upon the explosive properties and the soil properties. For those reasons, a reliable estimation or process simulation regarding cost efficiency and explosive work ability in the soil with known soil parameters is relevant. This paper presents a numerical simulation study of different types of soil (different amounts of gravel, sand, silt, and clay) under a blast load modeled using Ansys 2020 R1 Autodyn 2D hydrocode, with different types of explosives. The calculated results from the Ansys 2020 R1 Autodyn 2D and the experimental results obtained from the in situ cavity formation caused by blasting are presented. The Jones–Wilkins–Lee (JWL) equation of state parameters was calculated using EXPLO5 V7.01.01 supported by experimental data, while the soil and explosive properties were measured in laboratory and in situ.

According to Mitchelmore [1], generalisations are the cornerstone of school mathematics, covering various aspects like numerical generalisation in algebra, spatial generalisation in geometry and measurement, as well as logical generalisations in diverse contexts. The process of generalising lies at the heart of mathematical activity, serving as the fundamental method for constructing new knowledge [2, 3]. In this paper we will generalise an interesting geometry problem that appeared in the 1995 edition of the International Mathematical Olympiad (IMO) [4].