Blekinge Institute of Technology
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An integrated simulation framework for system-of-systems value exploration
No full textThe manufacturing sector is witnessing a paradigm shift toward servitization, where companies are transitioning from selling products to offering product-service systems. This shift creates additional challenges, where the providers must ensure the expected value throughout the operational phase of the solution. Especially when dealing with a system-of-systems (SoS), evaluating performance across diverse contexts and business models while understanding the interconnectedness between systems becomes critical. To address these challenges during the design phase, this article presents a novel integrated simulation framework that supports the development team in exploring value from a SoS perspective. This framework utilizes agent-based simulation and offers three key features: multifidelity, modular and multidisciplinary. The applicability of the proposed framework is further demonstrated in a quarry industry case
Model-driven scope 3 upstream (procurement) CO2 emission calculation for the design space exploration of maritime vessels
No full textThe marine industry is increasingly adopting platform and modular design strategies while facing growing sustainability regulations and emission constraints. This paper proposes an approach that integrates scope 3 upstream CO2 emissions (i.e., procurement) into a Decision Support Environment (DSE) for design space exploration of alternative modular ship design concepts. The DSE, deployed in the conceptual design stage, enables simultaneous testing of various cruise ship configurations regarding CO2 emissions using a bottom-up approach with parametric CO2 models. It leverages data-driven models from existing databases or AI-generated data exemplified in a case study on the hotel system of a cruise ship, illustrating how parametric design variables influence CO2 emissions, demonstrating a preliminary result of a prescriptive study in collaboration with a major international ship manufacturer
The Role of Honeypots in Enhancing Network Intrusion Detection Against Emerging Cyber Threats
No full textBackground. Conventional NIDS struggle with the detection of zero-day attacks and Advanced Persistent Threats (APTs). The detection methods based on signatures cannot identify new attacks, and the majority of the detection schemes based on the concept of anomalies have too many false positives. There may be an interesting possibility of improving the detection of threats with the help of honeypots that deceive cyber attackers. Objectives. The study will analyze how honeypots may be incorporated with NIDS to better identify zero-day attack activity and APT activity. Additionally, the study will examine the performance of hybrid systems relative to the performance of NIDS on its own. Methods. A stepwise approach based on the construction of the search string, inclusion and exclusion criteria, and a qualitative approach of synthesizing the results of various informative articles published between the years of 2015 and 2025 regarding the performance of integrating designs was used. Results. The results reveal that honeypot systems contribute behavioral and context knowledge that strengthens the detection functions of the NIDS system. Consequently, NIDS/honeypot hybrid networks have reported improved detection rates and shorter times of detection of attack events compared with conventional NIDS systems. Conclusions. The results conclude that the incorporation of the deception technology component into the network intrusion detection system results in the formulation of a stronger and more active defense system. Incorporation of the component brings about an issue; nonetheless, the hybrid system exhibits certain advantages
Automated skin cancer detection using MedFusionNet with attention-based fusion of ConvNeXt and vision transformer
No full textSkin cancer, especially melanoma, the most severe type, has increased in recent decades. It develops from cells that grow abnormally and can invade the surrounding tissue and spread throughout the body. Early and accurate diagnosis is essential to prevent disease progression and allow for less invasive clinical treatment. The extraction of complex dermoscopic images and the improvement of lesion classification performance have significantly improved skin cancer diagnosis through the use of convolutional neural networks (CNNs). In this study, a novel deep convolutional neural network that combines ConvNeXt and Vision Transformer (ViT) architectures through an adaptive attention-based approach for advanced feature fusion to automatically multi-classify skin cancer samples. This model is evaluated on two dermoscopy benchmark datasets, including ISIC-2019 and HAM10000 and both datasets reflect the real-world problem of class imbalance. The evaluation results of MedFusionNet are calculated using various evaluation metrics, including accuracy, precision, recall and AUC and compared with deep learning algorithms such as ResNet50, MobileNet V2, DenseNet121 and ViT-B16. The experimental results show that MedFusionNet outperforms the current models with a classification accuracy of 98.80% and 97.90% for HAM10000 and ISIC-2019, respectively. Grad-CAM visualizations qualitatively show that the model focuses on clinically relevant lesion regions, providing interpretive insight without claiming complete causal explainability. The results show that the proposed model can efficiently handle multi-class tasks in dermatological imaging and MedFusionNet is a suitable choice for implementation in real-world computer-aided diagnosis systems
När primärvården loggar in : Sjuksköterskors erfarenheter av digitala vårdmöten
No full textBakgrund: Digitaliseringen har blivit en central del av primärvårdens utveckling och förändrar sjuksköterskors arbetssätt. Samtidigt behöver omvårdnadens kärna med relation, närvaro och personcentrerad vård bevaras. Sjuksköterskors erfarenheter av digitala vårdmöten i primärvården är ännu begränsat beskrivna. Syfte: Syftet var att beskriva sjuksköterskors erfarenheter av digitala vårdmöten inom primärvården. Metod: Studien genomfördes som en allmän litteraturöversikt med induktiv ansats baserad på vetenskapliga artiklar. Vetenskapliga artiklar söktes i två omvårdnadsrelaterade databaser utifrån tydliga inklusions- och exklusionskriterier. Utvalda artiklar kvalitetsgranskades med strukturerad granskningsmall. Analysen följde Fribergs fyrastegsmodell där likheter och skillnader identifierades och sammanfördes till övergripande kategorier. Elva artiklar inkluderades i resultatet. Resultat: Sjuksköterskor hade flera olika erfarenheter av digitala vårdsmöten inom primärvården. Fyra huvudkategorier framkom; Digitala vårdmöten som ett effektiviserande och modernt arbetssätt, utmaningar och motstånd vid implementering av digitala vårdmöten, balansgång mellan digitala och fysiska vårdmöten samt styrkor och svagheter med kommunikation i digitala vårdmöten. Slutsats: Digitala vårdmöten utgör en betydelsefull del av sjuksköterskors arbete inom primärvården och skapar både möjligheter och risker. De bör främst ses som ett komplement till fysiska möten. För en säker, jämlik och personcentrerad digital vård krävs tydliga strukturer, adekvat teknisk utrustning, kontinuerlig utbildning och att sjuksköterskor ges delaktighet i utveckling och implementering
Hybrid Space and Submarine Architecture to Ensure Information Security of Telecommunications (HEIST)
No full textUndersea communication cables (UCCs) are critical for global connectivity but remain vulnerable to physical and cyber threats. This paper presents insights from the NATO Science for Peace and Security Project: Hybrid Space and Submarine Architecture to Ensure Information Security of Telecommunications (HEIST), a system designed to enhance the redundancy and resilience of UCCs. The proposed architecture aims to efficiently reroute data from submarine cables to satellite networks upon detection of threats via enhanced subsea sensing and monitoring. We discuss the components, including secure communication links, real-time situational awareness, and smart contracting for automated routing of compromised UCC communications. We demonstrate the operational capabilities of HEIST in mitigating disruptions through a simulation environment. The architecture indicates improved robustness to accidental or malicious attacks against submarine cables, reinforcing the strategic importance of hybrid multi-domain networks for resilient telecommunications. As such, the HEIST provides a blueprint for a future robust and resilient backbone for the internet. This work was supported by the North Atlantic Treaty Organization (NATO) Science for Peace and Security (SPS) Programme.</p
Sjuksköterskors erfarenheter av personcentrerad vård vid KOL inom slutenvård : En integrerande sammanställning av kvalitativ forskning
No full textBakgrund: Kronisk obstruktiv lungsjukdom är en av de vanligaste dödsorsakerna i världen och sjukdomen påverkar den fysiska, psykiska och sociala aspekten av patienternas liv. Symtom som andfåddhet, hosta och trötthet kan begränsa vardagsaktiviteter, öka oro och påverka livskvaliteten negativt. Sjuksköterskans huvudområde är omvårdnad, och med kärnkompetensen personcentrerad vård inriktar den på att stödja och hjälpa patientens unika behov. Detta innefattar både att lindra symtom, främja delaktighet och autonomi samt att ta hänsyn till patientens resurser, erfarenheter och psykosociala situation. Syfte: Syftet var att beskriva sjuksköterskans erfarenheter av personcentrerad vård hos patienter med kronisk obstruktiv lungsjukdom inom sluten vård. Metod: En kvalitativ integrerande sammanställning med induktiv ansats. Artiklar sammanställdes till ett resultat från Cinahl och PubMed. Resultat: Efter analysmodell resulterade det i två kategorier; det mänskliga mötet i vården och förutsättningar för personcentrerad vård, med underkategorier; att möta patienten som människa, kommunikation som grund för personcentrerad vård, organisatoriska utmaningar, sjuksköterskans kunskap och kliniska erfarenhet och samarbete som grund för kvalitet och säker vård. Slutsats: Sammanfattningsvis påvisar sjuksköterskans personcentrerade vård av patienter med KOL i sluten vård att den mänskliga närvaron och professionell kompetens samspelar för att patienten ska upplevas sedd och delaktig i vården. Även organisatoriska förutsättningar påverkar sjuksköterskans möjligheter att utöva en personcentrerad vård. Med sjuksköterskans kompetens och samarbete i teamet skapas tillgång för att uppfylla patientens behov på ett personcentrerat sätt
Treatment of peri-implant mucositis using an Er:YAG laser or an ultrasonic device : a randomized, controlled clinical trial
No full textPurpose The study assessed the clinical outcomes following treatment of peri-implant mucositis using Er:YAG laser or an ultrasonic device over six months. Patients' experience of pain, aesthetics, and Quality of life were further assessed. Methods One dental implant, per included patient, diagnosed with peri-implant mucositis underwent treatment with an Er:YAG laser (test) or an ultrasonic scaler (control) randomly. Treatments were performed at baseline and months three and six. At each session, oral hygiene was instructed after plaque registration, and the patient was guided in proper cleaning technique using a toothbrush and interproximal aids as needed. Full mouth bleeding on probing (FMBoP), full mouth plaque score (FMPS), implant bleeding on probing (BoP), implant mean graded bleeding (mBI), implant probing pocket depts (PPD), implant suppuration and bone levels were assessed. Oral health-related Quality of life (OHQoL) and visual analog scales (VAS), which reflect aesthetic satisfaction and pain of the treatment, were also evaluated. Results Forty-six patients were included. FMBoP was significantly reduced from 30.1 to 21.5% (test) (p < 0.001) respectively from 35.0% to 30% (control) (p < 0.01). FMPS showed significant reduction from 61.5 to 32.7% (test) (p < 0.001) and from 58.7 to 39.1% (control) (p < 0.001). At the implant BoP reduced from 89.0 to 55.7% (test) (p < 0.001) respectively from 94.9 to 63.7% (control) (p < 0.001). mBI was reduced from 1.3 to 0.6 (test) (p < 0.01) and from 1.9 to 0.8 (control) (p < 0.001). Distribution of "no bleeding" increased from 13 to 61% (test) (p < 0.05) and from 0 to 35% (control) (p < 0.05). At month three, statistically significant intergroup differences were shown for PPD >= 4 mm with 43.5% (test) respectively 73.9% (control) (p < 0.05). At month six, statistically significant intergroup differences, were shown for FMBoP 21.5% (test) respectively 30% (control) (p < 0.05) and for plaque score at the implant 4.0% (test) respectively 26% (control) (p < 0.05). Less pain was reported in the laser group at three days 0.08 (test) respectively 0.2 (control) (p < 0.05). Conclusions Treatment of peri-implant mucositis was effective regardless of whether the treatment was performed with an Er:YAG laser or an ultrasonic scaler. Fewer diseased sites were diagnosed at six months following laser treatment.Trial registration: Registered at www.clinicaltrials.gov: study no, NCT05772299. Conclusions Treatment of peri-implant mucositis was effective regardless of whether the treatment was performed with an Er:YAG laser or an ultrasonic scaler. Fewer diseased sites were diagnosed at six months following laser treatment. Trial registration: Registered at www.clinicaltrials.gov: study no, NCT05772299.A correction to this paper has been published:DOI: 10.1186/s40729-025-00599-6</p
Non-Abelian Extensions of Groupoids and Their Groupoid Rings
No full textWe present a geometrically oriented classification theory for non-Abelian extensions of groupoids generalizing the classification theory for Abelian extensions of groupoids by Westman as well as the familiar classification theory for non-Abelian extensions of groups by Schreier and Eilenberg-MacLane. As an application of our techniques we demonstrate that each extension of groupoids N→E→G gives rise to a groupoid crossed product of G by the groupoid ring of N which recovers the groupoid ring of E up to isomorphism. Furthermore, we make the somewhat surprising observation that our classification methods naturally transfer to the class of groupoid crossed products, thus providing a classification theory for this class of rings. Our study is motivated by the search for natural examples of groupoid crossed products
Digital Technologies as a Driver of Growth Aspirations? - an analysis of firms in Sweden
No full textDo firms’ investments in digital technologies leave a footprint in their growth aspirations? We employ a unique survey of more than 4,000 firms in Sweden to investigate whether firms that invest in software development are more likely to aspire to grow. There is a positive relationship between software development and growth aspirations, and firms that develop software are particularly more likely to aspire to grow through internationalization, i.e. expanding on new markets within as well as outside the European Union. Even after controlling for innovation, the result shows that for a wide array of firms, software development has become an essential input in the pursuit of growth and internationalization