2. Articole
Permanent URI for this collectionhttps://msuir.usm.md/handle/123456789/47
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Item Parcul digital 3D al monumentelor de arhitectură din Chișinău: inovație și valorificarea patrimoniului cultural(Editura USM, 2024) Sprincean, Veaceslav; Pascari, Serghe; Savva, Marianna; Matveev, SergiuUAV-based photogrammetry technologies allow the architectural and aesthetic details of monuments to be captured with extreme precision, which helps to thoroughly document their current condition. These models can be used for further restoration, even if the monument would suffer degradation or destruction. The 3D models act as a digital archive of monuments, making it possible to preserve cultural elements in virtual format even if they physically disappear.Item Определение значений сингулярных интегралов с приложениями в физике и технике(Editura USM, 2024) Barsuk, Alexandr A.; Paladi, FlorentinThe analysis of numerous problems in physics and mechanics naturally leads to singular integrals. In particular, we come to such integrals in the study of the processes occurring in electron plasma first emitted in the fundamental studies of A.A. Vlasov. We show that the calculation of the singular integral in the sense of the principal value leads to its true value and represents a way of uncertainty disclosure.Item Sensors and measurements for UAV safety(Editura USM, 2024) De Vito, LucaThis paper presents an overview of sensor and measurement technologies for enhancing the safety of Unmanned Aerial Vehicles (UAVs). In particular, the paper discusses the sensors and measurement technologies to improve the perception of the environment in UAVs as well as the platforms for ground verification of UAVs. The paper finally presents the prototype of a UAV test platform for small UAVs, developed as result of a collaboration between the University of Sannio and a company, allowing to measure the thrust force in several directions, the orientation of the UAV and the power consumption. The platform was recently enhanced with a machine learning-based fault detection method which was proven to identify propeller defects.Item Certificarea produselor ecologice(CEP USM, 2024) Caraman, ValeriaThe paper explores the certification process for organic products, examining its importance, challenges and impact on the environment and consumer behaviour. It highlights the growing demand for sustainable practices and products, driven by increasing public awareness of environmental and health issues. The study includes a detailed analysis of the current regulatory framework, comparative case studies and the role of certification bodies, identifying areas for improvement to improve the certification process and support sustainable development.Item Integrarea obiectelor (programe, formulare) în SAP conform legislaţiei RM(CEP USM, 2024) Spînu, DanThe research “Integration of objects (programs, forms) in SAP according to Moldovan legislation” is focused on analysing and proposing effective solutions for integrating necessary objects into SAP systems to comply with Moldovan legislation. The research highlights the importance of efficient SAP integration to meet fiscal and legal requirements, ensuring operational efficiency and legal conformity. It provides theoretical insights and practical applications for Moldovan companies using SAP, facilitating adherence to local fiscal and reporting standards.Item Modalităţi de creare şi implementare a activităţilor digitale interactive la informatică(CEP USM, 2024) Chitorog, AnaThe research „Methods of creating and implementing interactive digital activities in teaching Computer Science”analyzed the didactic systems for studying informatics, and the evolution of ICT integration in the educational process, and highlighted the following central idea: the implementation of ICT has a substantial impact and advanced performance, not only from a cognitive perspective or evaluation, but also in the space of cultivating feelings and motivation for teaching and for the permanent study of new information technologies. It ensures the realization of the principle of continuity in learning, adapted through the prism of ICT implementation in the didactic process.Item CARACTERIZAREA STRUCTURALĂ A STRATURILOR SUBȚIRI DE Sb2Te3 FABRICATE PRIN METODA SUBLIMĂRII ÎN VOLUM CUAZI-ÎNCHIS(CEP USM, 2024) Untila, Dumitru; Lungu, Ion; Suman, Victor; Gadiac, Ivan; Potlog, TamaraStraturi subțiri de Sb2Te3 au fost obținute pe suporturi de sticlă ITO/CdS prin metoda sublimării în volum cuazi-închis (CSS). Prin analiza difracției razelor X, s-a constatat că straturile subțiri de Sb2Te3 au rețea cristalină hexagonală, ce aparține grupului spațial P6/mmm. Creșterea temperaturii evaporatorului de la 470°C până la 530°C, duce la modificarea orientării preferabile de creștere a cristalitelor compusului Sb2Te3 și la creșterea gradului de cristalinitate a acestuia. Investigațiile Raman, au confirmat rezultatele XRD și au fost folosite pentru a obține informații suplimentare asupra structurii straturilor subțiri de Sb2Te3. Caracteristica dubletului observat la 119,54 cm–1 și 138,83 cm–1, precum și la 93,65 cm-1 si 107,36 cm-1 cu intensitate integrală foarte mică pot fi atribuite interacțiunii Te-Te între pachetele de telurură de antimoniu.Item DEZVOLTAREA TIMPURIE A DINAMICII FLUIDELOR: PARTEA I(CEP USM, 2024) Cernica, Ion M.The evolution of fluid dynamics from ancient times to the end of the 18th century is presented. It is shown that fluid dynamics appeared with the creation of the first means of production and evolved together with the economic development of society and human civilization. The hydrotechnical achievements associated with those in the fields of navigation and pneumatics gave fluid dynamics, at the initial stage of development, a predominant applicative character and this orientation was preserved for many centuries in a row. In the sense we assign today, fluid dynamics was initiated in the 17th century, when the resistance to the advance of solid bodies in fluid media had become an important problem for the science and technology of that time. Knowledge of water and air resistance was needed in the design of ships, cannons, water mills and windmills. The scientific achievements that marked the early development of fluid dynamics are described, and the role of prominent researchers in this field is shown.Item EPITAXIAL RELATIONS IN BaF2 FILMS GROWN BY MBE ON Si(III) SUBSTRATES(Institute of Electrical and Electronics Engineers Inc., 1995-10-11) Belenciuc, Alexandr; Fiodorov, Alexandr; Zencenco, Vladimir; Lucaș, Victor; Vasiliev, AlexandrThe dependence of the epitaxial orientations of the films in BaFdSi(III) heterostructures on growth conditions and the influence of heat treatment on the stability of epitaxial relations in such structures are investigated. The correlations between the types of epitaxial relations and structures of interface are also discussed.Item HOT WALL BEAM EPITAXIAL GROWTH OF PbTe LAYERS ON BaFdCaFdSi(llI) SUBSTRATES(Institute of Electrical and Electronics Engineers Inc., 2000-10-10) Belenciuc, AlexandrPbTe(III) thin films were grown by the hot wall beam epitaxy (HWBE) technique on Si( III ) substrates using intermediate BaF2/CaF2 buffers grown by MBE. The best PbTe layers exhibit the high resolution X-ray rocking curve linewidth of about 130 arcsec,the low temperature Hall mobility of 8 x l d cm2Ns, and an excellent surface morphology with the roughness of a few angstrom as it was determined by the atomic force microscopy (AFM). The results indicate that high-quality PbTe films can be obtained on fluoride covered Si(III ) substrates by simple and cheap HWBE method.