In this paper we present a technological problem encountered in the machining accuracy of the parts for aerospace made of aluminum alloy extruded profile with length up to 10 meters. Those parts have very tight tolerances and on milling process appear several factors that influence the repeatability of machining processes. Several factors must be c...

By Ș A Moldovan, M Cosma, V Năsui

The technical state of the contact line and also the additional equipment in electric rail transport is very important for realizing the repairing and maintenance of the contact line. During its functioning, the pantograph motion must stay in standard limits. Present paper proposes a LabVIEW application which is able to track in real time the motio...

By R Rob, G O Tirian, M Panoiu

There have been analyzed reasons of the loss of technical education's popularity. Also, the analysis of known educational and production methods, oriented at the innovative model of development of society, was performed. It is stated that the acquisition of 21st century's skills as a result of competition of technical education are natural for the ...

By L Y Shkitsa, V G Panchuk, V A Kornuta

Shafts of electric locomotives are exposed to complex normal and tangential stresses during its exploitation. These stresses could have extremely high level producing the breakage of the shaft. It is well known that shafts have much longer service life than wheels. However, since the stresses in shaft’s material are high, it is possible to mi...

By M Todic, V Golubovic-Bugarski

An alternative and cost-effective solution to developing integrated PV system is to use hybrid photovoltaic/thermal (PV/T) solar system. The temperature of PV modules increases due to the absorbed solar radiation that is not converted into electricity, causing a decrease in their efficiency. In hybrid PV/T solar systems the reduction of PV module t...

By M Dobrnjac, P Zivkovic, V Babic

The quality of electric energy capture and also the equipment operational safety depend essentially of the technical state of the contact line (CL). The present method for determining the technical state of CL based on advance programming is no longer efficient, due to the faults which can occur into the not programmed areas. Therefore, they cannot...

By S Rusu-Anghel, A Ene

A large number of students dislike school. Furthermore, a growing number of thinkers are criticizing conceptual, moral, and practical deficiencies of the current compulsory education paradigm (with an emphasis on the importance of freedom). However, systematic research on the structure of students’ attitudes about these fundamental issues is ...

By Ivan Knežević, Siniša Subotić

The Dark Triad of Personality includes three dimensions related to antisocial and manipulative behavior: Machiavellianism, subclinical narcissism, and subclinical psychopathy. The HEXACO personality model proposed honesty-humility as one of the basic personality dimensions, which shares a lot of variance with the Dark Triad. This research deals wit...

By Mirjana Karać

 During the development and exploitation of various technical systems, often encounter the need to we need the data pertaining to predict how these systems behave during their exploitation. This primarily relates to their technical qualities such as reliability indicators (reliability, availability, mean time between failures, failure intensit...

By Božo Ilić, Živoslav Adamović, Branko Savić

 This paper treats a priori (the reason why) ecological heating systems using boilers with complete combustion, with the main objective function of significant material cost savings and increase the level of effectiveness of the system. Burning modulated and cheapest biomass-wood bark (encrustation), and other wood waste which are directly wit...

By Бoрo Дaкић, Пaнтeлиja Дaкић, Бeсим Грoздaнић