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 braking system is one of the most important and complex subsystems of railway vehicles, especially when it comes for safety. Therefore, installing efficient safe brakes on the modern railway vehicles is essential. Nowadays is devoted attention to solving problems connected with using high performance brake materials and its impact on thermal an...

By I Kiss, V G Cioată, V Alexa, S A Raţiu

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

The paper presents a comparative analysis between experimental results and modelling in order to interpret the value of the contact pressure on the asymmetric longitudinal rolling. It is also intended action and the different behaviour of upper cylinder compared to the lower cylinder action in situations when both are driven, or only one operates. ...

By V Alexa, S A Ratiu, I Kiss, V G Cioata

Allelopathy is a process still little studied in the plant world, if we refer to the diversity of biochemical compounds, through which plants can interact with each other, with fungi or bacteria. Biochemical "dialogue" between organisms may have stimulatory or inhibitory effects, contributing to numerical setting of the populations, the assertion o...

By M Marian, Z Voşgan, O Mare Roşca, L Mihalescu

The manufacturing of PEMFC stacks (POLYMER ELEKTROLYT MEMBRAN Fuel Cell) is nowadays still done by hand. Over hundreds of identical single components have to be placed accurate together for the construction of a fuel cell stack. Beside logistic problems, higher total costs and disadvantages in weight the high number of components produce a higher s...

By C K Jalba, A Muminovic, C Barz, V Nasui

Students’ satisfaction with life is a multidimensional construct, which encompasses the satisfaction within different domains, including a satisfaction with school. It refers to the evaluation process in which a person evaluates the quality of his or her life according to their own unique set of criteria. The goal of this research was to dete...

By Divna Slavnić, Ivana Zečević

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

 To evaluate the feasibility of the amount of energy that can be purchased (energy harvesting) from the environment (where RF is radio frequency) in the vicinity of a GSM base station BTS and compliance permissible limits the transmission power, we performed measurements of the electromagnetic field intensity fixed located in the University (N...

By Pop-Vadean Adina, Pop Paul Petrica, Tihomir Latinovic, Cristian Barz

 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