Entries by UTM

ENGINEERING OF SEMICONDUCTOR COMPOUNDS VIA ELECTROCHEMICAL TECHNOLOGIES FOR NANO-MICROELECTRONIC APPLICATIONS

https://doi.org/10.52326/jes.utm.2022.29(1).01 UDC 621.382:546:621.3.049.77 Eduard Monaico Abstract. The paper is focused on electrochemical approaches for nanostructuring of semiconductor compounds with further applications in nano – microelectronic devices. A cost-effective technology for nanowires and nanotubes obtaining by pulsed electrochemical deposition is presented. Functionalization of elaborated nanostructures with gold or platinum via electroplating improves the properties of the […]

GENERATION OF HIGH AMPLITUDES PULSES WITH EXCITABLE DFB LASERS AND AN INTEGRATED DISPERSIVE REFLECTOR

https://doi.org/10.52326/jes.utm.2022.29(1).02 UDC 621.375.826 Silvia Andronic, Eugeniu Grigoriev, Vasile Tronciu Abstract. This paper is devoted to investigation of pulse generation by a distributed feedback (DFB) laser with an integrated passive dispersive reflector. This configuration is treated in the framework of the simple rate equation model for dimensionless carrier and photon numbers. The two functions describe the […]

THEORETICAL CONTRIBUTIONS ON THE SELECTION OF POSSIBLE TRIBOLOGICAL COUPLES OF MATERIALS FOR THE MANUFACTURE OF PRECESSIONAL TRANSMISSIONS

https://doi.org/10.52326/jes.utm.2022.29(1).03 UDC 621.83:678.073 Ion Bostan, Petru Stoicev, Alexandru Buga, Gheorghe Postaru, Nicolae Trifan, Andrei Platon Abstract. Selecting gear materials is a great challenge for engineers. Gear teeth are subject to difficult and severe loading conditions. Simultaneous action of alternating normal and tangential dynamic stresses occurs, contact deformations accompanied by sliding friction. Gears are subject to […]

DRIVER OR AUTOPILOT – WHO IS THE FUTURE

https://doi.org/10.52326/jes.utm.2022.29(1).04 UDC 656.13.08 Vasile Plămădeală, Sergiu Dîntu Abstract. The human factor is the main element in the production of road events, not only in terms of percentage, but also in absolute importance, because, ultimately, road and technical issues are involved in road accidents only in strict accordance with the behavior and the direct action of […]

THE TRANSITION TO A HYDROGEN ECONOMY

https://doi.org/10.52326/jes.utm.2022.29(1).05 UDC 662.769.2:620.9 Titu-Marius I. Băjenescu Abstract. The article examines the problem of the hydrogen market – from production to how to use it, as well as the prospects for the development of these energy sources. To combat climate change, more and more countries are investing in low-carbon energy, which is produced from renewable sources […]

SYSTEMS FOR INVARIANT TARGET RECOGNITION BASEDON CENTRAL IMAGE CHORD TRANSFORMATION

https://doi.org/10.52326/jes.utm.2022.29(1).06 UDC 623.4.021:004.6 Veaceslav Perju Abstract. Target recognition (TR) is widely used in different military and civil applications and permits enhanced intelligence and autonomously operating platforms design. The article describes existing systems for TR such as deep learning aided computer vision; target tracking architecture, based on the tracking-by-detection paradigm; a target detection dataset; deep neural […]

ELABORATION AND APPLICATION OF GRAPHICAL MODELS TO OPTIMIZE THE RESPONSE TIME TO EMERGENCY SITUATIONS

https://doi.org/10.52326/jes.utm.2022.29(1).07 UDC 614.8.084 Serghei Peancovschii Abstract. This article presents methods for timing the key milestones and timing of the emergency response. A graphic model is proposed that allows you to determine the stage and time of the response process, regardless of the nature of the ongoing processes manifestation. The model allows a detailed analysis the […]

PROOF-OF-STAKE CONSENSUS ALGORITHMS FOR THE SOFTWARE COMPONENTS BLOCKCHAIN

https://doi.org/10.52326/jes.utm.2022.29(1).08 UDC 004 Vaidas Giedrimas Abstract. In the blockchain context, the information system (IS) is considered a part of its infrastructure. However, blockchain itself can be used for IS development using software components and services. As the trust for binary components or services is still a problem, we propose to use the blockchain of components […]

ERGONOMIC INVESTIGATION AND ASSESSMENT OF MOTORCYCLISTS MUSCULOSKELETAL DISORDERS

https://doi.org/10.52326/jes.utm.2022.29(1).09 UDC 616.7:656.18.05: 331.101.1(669) Adekunle I. Musa-Olokuta, Collins Nwaokocha, Adeola S.Shote, Samson A. Aasa Abstract. Motorcycles have become a mean of transportation in our rural and urban area in Nigeria. This cross sectional study was conducted in Abeokuta Ogun State to assess the work-related musculoskeletal disorders (WRMSDs) among the motorcyclist between October 2021 and January […]