Introduction. A modified imaging technique for the right coronary artery (RCA) has been developed to reduce radiation dose and fluoroscopy time. Methods. This study compared patient and operator exposure to ionizing radiation (mGy) and fluoroscopy time(s) during RCA imaging using standard and modified methods. Results. The modified technique resulted in significantly lower radiation dose (23.78 vs. 34.78 mGy; p < 0.001). Conclusion. The modified RCA imaging technique substantially decreases radiation exposure, fluoroscopy duration, and contrast volume, improving safety for both patients and staff. Keywords: Right Coronary Artery, Ionizing Radiation, Coronary Angiography, Fluoroscopy, Radiation Protection.

Fine-grained structural steel of the S690QL designation is widely used due to its very good mechanical properties and good weldability and bending, resistance to abrasion and corrosion. It is most often made in the form of plates of different thicknesses. S690QL steel plate has excellent performance characteristics and is used when low temperature resistance and important strength components are required. It is used in addition to applications for construction machines and structures, mining machines and in the energy sector, highways, railway bridges, etc. Since this steel is used in very demanding conditions such as low temperature, it is very important to test the mechanical properties of the impact toughness at these temperatures. Toughness is an important property that can indicate a material's tendency towards brittle fracture. In this work, a large number of samples were tested for this property, i.e. impact toughness at a temperature of -40°C taken from plates of different thicknesses made of S690QL steel. In addition to this property, the grain size of this steel after heat treatment is also taken into account. These characteristics and their mutual dependence provide directions for correcting the production of semi-finished products or finished products.

Economic entities in the global market, within the oil industry, have become aware that they must pay attention to the environment in their business operations. Environmental accounting enables them to track and analyze the necessary information concerning their effects on the environment. For many economic entities, monitoring the harmful impacts on the environment and environmental protection is not only a challenge to meet the requirements of regulatory bodies and supply chains, due to the reputation of business image and consumer pressure, but also due to the necessity of a business strategy that promotes corporate sustainable development. The subject of this research is the analysis of the state of environmental accounting in the oil sector, while respecting the framework of sustainable development faced by economic entities in this sector. The aim of the paper is to investigate how much attention is devoted to environmental accounting and sustainable development in the oil industry in Bosnia and Herzegovina, and to apply the regulations that govern environmental accounting, as well as to systematize the components of environmental accounting, objectives, and dimensions of sustainable development. It has been established that the implementation of environmental accounting is weak, but that in making business decisions, economic entities in the oil sector in Bosnia and Herzegovina rely on the effects of the economic and environmental dimensions of sustainable development.

Akademik Mirko Pejanović u svom višegodišnjem naučnoistraživačkom radu imao je u fokusu nekoliko naučnih polja. On je pratio, izučavao i tumačio politički pluralizam u Bosni i Hercegovini, evropske i euroatlantske integracije u kontekstu Dejtonskog mirovnog sporazuma, državnost BiH u XX i XXI stoljeću, biografije istaknutih ličnosti BiH, nastavno-pedagoški i mentorski rad pojedinih doktoranata na fakultetima širom BiH, a posebno lokalnu i regionalnu samoupravu. Sve naučne oblasti koje su mu bile u fokusu i o kojima je pisao međusobno su povezane i prožimaju jedna drugu, iako na prvi pogled djeluju raznovrsno. Sve ove oblasti čine koherentnu cjelinu unutar političkih i pravnih nauka i, što je veoma važno, fokusirane su na državotvornu dinamiku BiH. Akademik Mirko Pejanović je pristupao ovim temama interdisciplinarno, spajajući politologiju, sociologiju, historiju i pravo, te javnu upravu i regionalizaciju, kako bi dao potpunije i sveobuhvatnije odgovore na ključna pitanja opstanka i razvoja BiH. Posebno mu je značajan naučni i pedagoški rad vezan za lokalnu i regionalnu samoupravu, ostvaren istraživanjima, oblikovanjem i definisanjem ovih veoma važnih oblasti ljudskog života, te doprinoseći razvoju tih oblasti ljudskog djelovanja. Njegov rad je, između ostalog, imao pozitivne posljedice, jer su ideje, istraživanja i pažljiva zaključivanja bili iskazani njegovim brojnim nastupima na konferencijama, okruglim stolovima, predavanjima, kao i napisanim člancima i knjigama, te su imali uticaj i efekte pri donošenju brojnih propisa, ali i u profiliranju politika na državnom i drugim nivoima u BiH.

This paper presents the LANA Adaptive Labeling Framework (ALF) as an advanced framework for dynamic method labeling and selecting optimal data processing methods in multiple multicriteria intelligent software systems, focusing on business processes in higher education institutions (HEIs). Earlier approaches to method labeling relied on static hierarchical structures. In contrast, LANA ALF introduces adaptability through continuous learning from user feedback, automatic balancing of criteria based on historical data and current task requirements, and multidimensional labels for comprehensive method evaluation. Each query is represented with a set of labels, while neural networks evaluate the optimal method by balancing criteria such as performance, cost, reliability, and accuracy. User feedback is stored in dynamic tables (e.g., user satisfaction), automatically adapting their structure to new tasks and data types. The results demonstrate that LANA ALF enables intelligent agents to autonomously make decisions without the need for direct involvement of data science experts, thereby increasing accuracy, reliability, and user satisfaction. This framework provides a foundation for further application of ALF in various domains

Introduction. The harmful effect of cigarette use has been proven through existing studies, but the recent advanced use of heat-not-burn-tobacco-products (HNB) and its effect remains under observation. Results. After six months, HNB users exhibited better-preserved FEV1 and peripheral oxygenation values. Conclusion. Patients using HNB tobacco products achieved better 6MWT and spirometry testing results and showed lower cholesterol and hs-CRP levels after six months of follow-up. Keywords: smoking, spirometry, heat-not-burn, lung function decline, respiratory health.

Freedom of contract is a fundamental principle of obligation law, but in modern legal systems it functions as a relative and normatively oriented category. The paper examines the theoretical foundations of this institute, starting from the liberal conceptual core of the autonomy of the will and its historical development, to the modern, functional concept that views contractual freedom in the broader framework of public law restrictions, market discipline, and protection of the weaker party. The analysis includes domestic and comparative law, including standards of European contract law and modern economic indicators (EFW index), in order to indicate the connection between economic and contractual freedom. Special attention is paid to the position of business entities, where contracting has a specific dimension due to their professional status, the complexity of market transactions, and pronounced information asymmetry. Through the analysis of imperative norms, standard and adhesion contracts, regulated markets, and unequal bargaining power, the key practical and systemic limits of business autonomy are pointed out. The results of the work show that these restrictions do not represent a negation of the freedom of contract, but a mechanism for its functional realization - through the provision of legal certainty, fair market conditions, protection of competition, and stability of the economic order. The paper contributes to a better understanding of the modern conception of contractual autonomy in the economy, indicating that the balance between freedom of disposition and public law regulation is the key assumption of an efficient, fair, and sustainable contractual system.

Izgradnja poslovne infrastrukture, naročito poslovnih zona, podrazumijeva ispunjenje cijelog niza pretpostavki koje su često međusobno uslovljene. U vezi s tim u bosanskohercegovačkom pravnom okviru do izražaja dolaze brojni faktori ustavnopravne, ali i stvarnopravne prirode. Najprije treba poći od činjenice složenosti ustavnog sistema u Bosni i Hercegovini, gdje se moraju uvažiti legislativne postavke, naročito u dijelu nadležnosti za uređenje određene oblasti. Tako, kad je riječ o izgradnji poslovnih zona, posebno mjesto imaju jedinice lokalne samouprave, ali s bitno promijenjenom ulogom u odnosu na period u okviru bivše države (SFRJ). Zapravo, u odnosu na raniji (socijalistički) period, kada su jedinice lokalne samouprave imale gotovo ključnu uloge u smislu planiranja te izgradnje proizvodnih kompleksa, danas imaju bitno drugačiji položaj, koji se u pravilu svodi na planiranje prostornih obuhvata budućih poslovnih zona te na izdavanje potrebnih dozvola. To je rezultat napuštanja komandne privrede u okviru koje je izgradnja proizvodnih kompleksa vezana za državnu regulaciju. Dakle, rezultat tranzicijskih procesa u ovoj oblasti rezultirao je situacijom da je proces izgradnje poslovnih zona iz javnopravnog sektora prešao isključivo u privatnopravnu sferu, gdje ključnu ulogu imaju privatni investitori, dok jedinice lokalnih samouprava imaju servisnu ulogu. Upravo je saradnja između javnopravnih subjekata, pri čemu se dominantno misli na jedinice lokalne samouprave, i potencijalnih investitora, ključni segment u smislu da li će se uopće izgraditi određena poslovna zona. U tom odnosu, pored ustavnopravnog okvira, od izuzetnog je značaja uređenost imovinskopravnih odnosa, za šta su u pravilu zadužene jedinice lokalne samouprave, bilo kroz stvaranje imovinskog (nekretninskog) portfelja jedinice lokalne samouprave koji će poslužiti za buduću poslovnu zonu, bilo kroz uključivanje u rješavanje određenih, često naslijeđenih imovinskopravnih problema, koji su preduslov za izgradnju, primjera radi, proizvodnih objekata u okviru poslovne zone. U vezi s tim, od presudne je važnosti poznavanje limitirajućih faktora koji su vezani za zakonodavstvo te traženje optimalnih modela za realizaciju poslovnog poduhvata. Na koncu, ali ne manje važno, jest nužnost uvažavanja relevantnih odluka Ustavnog suda Bosne i Hercegovine, koje su u značajnoj mjeri oblikovale de lege lata prizmu u pogledu pravnog statusa značajnog broja nekretnina koje se, pored ostalog, nalaze u obuhvatu sadašnjih, ali i budućih poslovnih zona.