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Empirical Assessment of Wind Power’s Capacity Credit: A European Case Study
Get PDFThis paper presents an empirical analysis of the intrinsic capacity credit of onshore wind power across twelve European countries, based on hourly measured data for 2019 and 2024. Capacity credit was calculated as a function of acceptable default risk, under the simplifying assumption that wind power alone must satisfy total demand, serving as a limiting-case benchmark for adequacy assessment. The results show a wide range of outcomes across individual countries and highlight the effects of spatial aggregation, where the combined regional system performs better than its constituents. A nonlinear model was fitted to describe the relationship between capacity credit and risk probability. Additionally, several hypothetical spatial distributions of installed capacity were evaluated using statis-tical criteria, illustrating how coordination could affect adequacy outcomes. The analysis was based exclusively on observed data, without additional modeling assumptions, and the proposed method offers a transparent, generalizable framework for empirical adequacy benchmarking across generation types and planning contexts
Impact of clinical pharmacist counselling at discharge on adherence to oral antibiotics: A pilot study
Get PDFAntibiotic resistance is a growing global health threat, with patient non-adherence to prescribed antibiotic regimens representing an important contributing factor. This prospective interventional study investigated the impact of clinical pharmacist counselling at hospital discharge on adherence to oral antibiotic therapy. The study was conducted at the Department of Nephrology and Endocrinology, General Hospital “Dr. Tomislav Bardek”, Koprivnica, between March 2022 and July 2025. A total of 98 participants aged ≥18 years who were prescribed oral antibiotics at discharge were randomised into intervention (counselling) and non-intervention groups. Baseline socio-demographic and clinical data were collected, and adherence was assessed following treatment completion using a structured questionnaire developed by the authors. Of the 98 participants, 94 were included in the final analysis. Non-adherence was significantly lower in the intervention group, compared to the non-intervention group (2.1 % vs. 36.2 %, p < 0.001). Urinary tract infections represented the most common indication for antibiotic therapy, with ciprofloxacin and amoxicillin-clavulanic acid being the most frequently prescribed medicines. This study demonstrates that pharmacist-led discharge counselling markedly improves adherence to short-term antibiotic therapy. These findings provide preliminary evidence supporting integration of clinical pharmacists into hospital discharge processes to promote rational antibiotic use and combat antimicrobial resistance
Offloading of mobile – cloud computing based on Lion Optimization Algorithm (LOA)
Get PDFMany problems and limitations appeared with the spread of mobile cloud computing (MCC) technology, due to the battery life of the mobile, limited resources, storage space and processors. In addition, the biggest challenge is to make decisions about executing tasks between local devices and cloud servers (edge) to save energy and reduce delay time by reducing the energy consumption (or cost) of the system concerned. In this paper, an optimization method based on the Lion Optimization Algorithm (LOA) is proposed for task- offloading of mobile cloud computing. Task- offloading is the transfer of tasks from mobile devices to servers that handle high-level computational operations, such as cloud servers or Mobile-Edge Computing (MEC) servers, to reduce task execution time and energy consumption. The proposed algorithm has a high performance in reducing the cost for offloading tasks. This method can be used to improve the performance of 5G, 6G and later mobile technologies to implement applications that require a large amount of computing, also, multi-objectives could be applied for more cost reduction. The results showed that the proposed algorithm LOA is better than other traditional algorithms such as the genetic algorithm in terms of calculating the costs to find the best solutions
Priča o dvije inflacije u Hrvatskoj: uloga domaćih i inozemnih šokova
Get PDFU radu se analizira post-pandemijsko kretanje inflacije u Hrvatskoj te se provodi usporedba s europodručjem. Inflacija u Hrvatskoj je od 2022. godine pratila inflaciju u europodručju, ali je konstantno bila na nešto višoj razni. Do razdvajanja je došlo tek u 2024. godini kada inflacija u Hrvatskoj i dalje ubrzava, dok se u europodručju stabilizirala na ciljanih 2%. Brži rast cijena u Hrvatskoj u odnosu na trgovinske partnere značajno je pridonio padu konkurentnosti koji je trenutno na razini iz 2009. godine s početka globalne financijske krize. Svrha rada je analizirati potencijalne uzroke inflacije uključujući uvođenje eura, neusklađenost poslovnih ciklusa, porast plaća u javnom sektoru, državnu potrošnju te sredstva iz EU fondova. Uvođenje eura se nije pokazalo kao glavni uzrok inflacije. Inflacija je počela ubrzavati i dosegla vrhunac i prije u-vođenja eura, štoviše najbrže je rasla u 2022. godini. U tom periodu inflacija je bila uzrokovana šokovima ponude. Također, inflacija je usporedno rasla i u zemljama koje nisu uvele euro. U Hrvatskoj su dugo vremena poslovni ciklusi bili usklađeni s europodručjem. Do razdvajanja dolazi tijekom pandemije i u vrlo recentnom periodu unazad dvije godine. Glavni uzrok raz-dvajanja inflacije u Hrvatskoj u odnosu na europodručje je pregrijavanje domaćeg gospodars-tva. Dok su 2022. i 2023. godine inflaciju dominantno objašnjavali inozemni šokovi, nakon 2023. godine to se mijenja te inflaciju najbolje objašnjavaju domaći šokovi potražnje, što uka-zuje na pregrijavanje domaćeg gospodarstva. Pregrijavanje gospodarstva ima veze s vrlo zate-gnutim tržištem rada te s pojačanom državnom potrošnjom i trošenjem bespovratnih sredstava iz EU fondova. Doprinos rada je u objašnjenju dvije inflacije u Hrvatskoj. Priča o dvije inflaci-je u Hrvatskoj se može objasniti inicijalnim rastom troškova inputa, poput energenata, koji je nastupio u 2022. godini. To je dovelo do rasta troškova i marži što nije bilo popraćeno podjed-nakim rastom plaća. Nakon inicijalnog rasta inflacije, zbog zategnutog tržišta rada je došlo do značajnog pritiska na plaće, što je od 2024. godine ponovno počelo hraniti inflaciju. Ovaj nak-nadni efekt je izostao u europodručju radi čega se smanjila usklađenost između Hrvatske i europodručja
Pulicaria odora Ethanolic Extract as a Corrosion Inhibitor and Its Eco-friendly Synthesis of CuO Nanoparticles for Photocatalytic and Microbial Properties
Get PDFThis work examines the effect of Pulicaria odora leaf extract effect as a green inhibitor on SS308 steel corrosion in a 1 mol L–1 hydrochloric acid solution. The electrochemical results reveal that inhibitory efficiency increases with the concentration of Pulicaria odora leaf extract, reaching a maximum inhibition rate of 94.6 % at 500 ppm. Potentiodynamic polarization curves suggest that the plant extract acts as an anodic-type inhibitor. The polarization and electrochemical impedance findings are in good agreement. Adsorption of the inhibitor on the steel surface is spontaneous and follows the Langmuir isotherm. Furthermore, a copper-based catalyst synthesized using Pulicaria odora extract produced a good yield, and this catalyst showed effective photodegradation of methylene blue. The CuO nanoparticles (NPs) synthesized from Pulicaria odora extract showed significant antimicrobial activity against the tested bacterial strains.
This work is licensed under a Creative Commons Attribution 4.0 International License
Cyber seksualno uznemiravanje i nasilje
Get PDFU području istraživanja cyber seksualnog uznemiravanja (eng. cyber sexual harassment, dalje u tekstu: CSH) javljaju se problemi definiranja ključnih pojmova te njihovog klasificiranja. Nepostojanje konsenzusa među istraživačima za posljedicu ima niz metodoloških ograničenja u utvrđivanju prevalencije tih pojava u različitim populacijama, ali i razvoja mjernih instrumenata. Ipak, mnoga istraživanja potvrđuju kako CSH nije izolirana pojava i da se u pravilu javlja uz klasične oblike seksualnog uznemiravanja. Rizični faktori počinjenja CSH-a uključuju nižu razinu socijalne podrške i roditeljskog nadzora, više razine ljutnje, izloženost pornografskom materijalu i počinjenje seksualnog uznemiravanja uživo. Izloženost pornografskom materijalu i niža razina roditeljske kontrole rizični su faktori i za doživljavanje CSH-a, uz ženski spol i korištenje alkohola i droga. Doživljavanje CSH-a povezano je s porastom broja simptoma depresije i traume, anksioznošću, većim razinama stresa i suicidalnim mislima. Programi edukacije pokazuju se učinkovitima u smanjenju doživljavanja CSH-a. U istraživanju ovako složenih pojava veliki doprinos imaju i kvalitativna istraživanja kojima je moguće ispitati kontekst u kojemu se javlja CSH. Cilj je ovog rada ukazati na problematiku definiranja CSH-a te pružiti pregled istraživanja odnosa CSH-a s klasičnim oblicima seksualnog nasilja, rizičnih faktora doživljavanja i počinjenja takvog oblika nasilja te utjecaja na psihološko funkcioniranje žrtava