Finding the coefficient of rolling friction (CRF) by the inclined plane method is similar to the manner used in establishing the coefficient of sliding friction. For the rolling case, the difficulty arises from the fact that the usual devices employed in angular measurements present errors greater than the effective angle. The paper surmounts...

By ALACI STELIAN, ILIE MUSCA, CRISTIAN BARZ, CRISTIAN BARZ, SORINEL TODERAS SIRETEAN, FLORINA–CARMEN CIORNEI

 The continuous degree of automation in industry and the networking of individual components such as machines, robots, autonomous drive systems, control units etc. open up new possibilities for linking production and service, or integrating customers and business partners into value-added processes. In this technical revolution, machines shoul...

By CRISTIAN BARZ, KLAUS C JALBA

 The paper presents different types of controlling and monitoring an industrial process through web interface, depending on the connection types made by PLC or HMI used in the process. We can control the industrial processes through HMI interface directly on the web or phone if we use a Weintek HMI in connection with a SIEMENS PLC for manipula...

By BARZ CRISTIAN, KLAUS C JALBA, NICOLAE UNGUREANU, CHIVER OLIVIAN, IOANA TASCU, SINISA DRAGUTINOVIC, DRAGAN FELICIA

 The Internet is currently the largest computer network on our planet. You can call it network of networks. The Internet no longer confined to universities, industries and Governments. Today everyone use it, because each individual can now join the network. The Internet allows to exchange information freely. At the same time, there is the dyna...

By BENEA MARIUS, JELENA SIBEREVIC

 There are a few things that we look at daily and in which marketing is not involved, and very often we are not even aware of the extent to which we are susceptible to various marketing messages that in some way affect us. Whether I want to admit it or not, we are all part of one big global marketing globally circulating ball and sends us vari...

By BENEAV MARIUS, NIKOLA VOJVODIĆ

 The paper presents a viable success alternative for solar energy valorification to generate electricity in a Nord – West Romania community, respectively in Baia Sprie town. The electricity provided by solar power plant is used for city streets lighting system and partially replace conventional electricity, almost 25% and it is an energe...

By BREZOCZKI VALERIA, GABRIELA FILIP

 The paper deals with the problem of determining the stator end winding inductance of A.C. machines. It refers to the two-layer windings with shortened pitch, the relative pitch being less than one. The inductance has been determined by numerical analysis based on finite elements method (FEM), the procedure being described in this paper. In or...

By OLIVIAN CHIVER, LIVIU NEAMT, CRISTIAN BARZ, ELEONORA POP, CRISTINEL COSTEA, ZOLTAN ERDEI

 In order to model natural phenomena, a faithful model describing the evolution of the analyzed phenomena must consider as many aspects as possible. An advantage of a correct representation of the studied phenomenon is the highlighting of the aspects hard to notice initially. To support these affirmations, two examples are brought into attenti...

By CIORNEI FLORINA-CARMEN, CRISTIAN BARZ, STELIAN ALACI, IONUT-CRISTIAN ROMANU, BOGDAN-ION DRAGOI

 Steganography is a technique of hiding secret information into an innocent looking container. Although a large number of steganography techniques exist, there is a constant need for new ones because they have a relatively short lifespan, being constantly defeated by steganalysis methods. Least Significant Bit substitution (LSB) is one of the ...

By OVIDIU COSMA

 The special interest shown recently in Blockchain and Internet of Things highlighted the possibility of implementing distributed functionalities in nodes as close as possible to the source of data. The paper discusses advantages and challenges of blockchain technology to enable autonomy in Internet of Things, focused on traffic performance mo...

By COSTEA CRISTINEL, ADRIAN PETROVAN

Usually, the international Projects are of greater importance and with greater founding than national projects, involve multiple partners from different countries and are subject of nationals and international controls. The paper underline responsibilities of the management team both to the Project Contract and to the national laws requirements, re...

By ANAMARIA DĂSCĂLESCU, MIORIȚA UNGUREANU

The brand name is the one element that consumers immediately recognize and which creates a connection in their minds with a certain product or a given producer. Modern businesses have discovered that there is no marketing strategy more powerful than coming up with a catchy name or image that will stick to the consumer’s mind and generate a ce...

By DEMARCSEK RAMONA, TODEA LUMINITA, FALAUS ANAMARIA

Buildings fire prevention and protection requirements concern the personal safety of the occupants including the protection of material values and are the basic issues addressed by building regulations. How the material reacts in a fire and/or their fire resistances are two factors for choosing a building material and way the material is implemente...

By DIMITRIJEVIĆ DRAGANA JOVANOVIĆ, PREDRAG ŽIVKOVIĆ

Monitoring of the manifestation of solar radiation and the exploitation of this type of energy predominantly imposes the need to measure a number of parameters related to radiation itself, as well as radiation receivers and other devices of the system. Thermal receivers with liquid as a solar energy transmitter have now become consumer goods with a...

By DOBRNJAC MIRKO, MILOŠ MARKOVIC, SANJA DOBRNJAC

One of the least researched, but important issues in the field of political sciences is the implication of social responsible policies in making and implementing public policies and which are the bases of the social responsibility issue. There are some fundamental questions that are filosofical ones, but which represent part of the base of politica...

By DOMIDE OCTAVIA, DOMIDE GHERASIM SOLOVESTRU

We explored the impact of socially desirable responding (SDR) when assessing the outcomes of the emotional literacy training for high school students using a self-report measure of emotional competence (EC). The training was conducted on a total sample of 737 high school students from the Republic of Srpska. As a part of the training effects evalua...

By DOŠEN GABRIELA NINKOVIĆ, IVANA ŽIVKOVIĆ, SINIŠA SUBOTIĆ

The paper aims to carry out experimental research meant to increase the quality of some mass produced furniture items. In order for that to happen, a great number of size measurements have been done on beech and birch wood parts obtained through milling and drilling with numerically controlled machines. The experiment lasted for a week, with work b...

By DRAGAN LILIANA

In this paper some results concerning fluid flow pattern and the evolution of flame propagation through unburnt mixture of two different hydrocarbon fuels in engine with strong macro flows were elucidated. Results presented in this paper were obtained by dint of multidimensional numerical modeling of reactive flows in very complex geometry of parti...

By DRAGUTINOVIC SINISA, MASONICIC ZORAN, DRAGAN NIKOLIC

This study, using the theory of electric circuits, shows the right definition of scattering parameters (S-parameters) for any two-port electric circuit and the practical way to use these parameters in streamline the processes of information transmission and propagation, and the transfer of the active power from the electric quadrupole input (output...

By ERDEI ZOLTAN, MIHAI IORDACHE, DRAGOȘ NICULAE, ALEXANDRU GRIB

The current digital revolution and boom in the use of smartphones have triggered off a consistent change in our educational needs and necessities. The way we access information, consume, discuss and share content has evolved in such a way that makes the traditional landscape of classroom didactic processes obsolete and outdated. E-learning has beco...

By FĂLĂUŞ ANAMARIA, DEMARCSEK RAMONA, TODEA LUMINITA

Fish is an important source of protein, iron and zinc - essential nutrients for child growth and development, a source of energy for adults, elderly. Omega-3 fatty acids found in different fish species help develop children’s brains, maintain flexibility in blood vessels and contribute to brain oxygenation by annihilating the destructive effe...

By FODOR KATALIN, BARZ TATIANA, DRĂGAN FELICIA

Software quality management tool represents an important part of the development process of each software product, as it helps with the evaluation of the quality as well in keeping and tracking issues in the project, providing a good image of the overall quality. We will describe the challenges of developing a quality management tool, and we will u...

By HAJDU-MACELARU MARA DIANA

In this article we obtain some numerical results for the considered problem u'' - u' + (-u^2 + 1)e^(-1/(1+u)) = 0 on [0,1] u'(0) - u(0) = 0u'(1) = 0 This problem arises from the theory of adiabatic tubular chemical reactors. To solve the problem from above we applied a common fixed point result for non-deceasing and weakly increasing operators i...

By HORVAT-MARC ANDREI, IOANA TAȘCU-STAVRE

The magnetic field of a closed loop of conductive wire can be computed due to Biot-Savart law, which analyses the value of the field at an exterior point from the transversal axis. If the measure point is out of the axis then the magnetic field has completely different values. A general stated form of this law can measure the value in any point, in...

By IUGA BOGDAN, RADU-ADRIAN TIRNOVAN

Lobbying is a term with multiple meanings, the origin of which is derived from the English word which means LOBY hall, where the talks were held. Over time, in modern society, are derived concepcts LOBBYING, meaning negotiation, and lobbyists, which means a person who negotiates. Lobby and advocacy resulting in the 17th century in Britaina in parli...

By JAGANJAC JASMIN, ŽELJKO KOVAČEVIĆ, ALEKSANDRA PUŠARA

Limited resourses of fosil fuels and the greenhouse effect imposed a need for constant researches in area of usage of renewable energy sources (RES) a long time ago. Goal of this researches is using renewable energy sources more often. One of the types of renewable energy sources in Serbia is nonwood biomass. Nonwood biomass has two big advantages....

By JELENA NIKOLA JANEVSKI, BRANISLAV STOJANOVIC, PREDRAG ZIVKOVIC, DRAGANA DIMITRIJEVIC

The principles of component-oriented hybrid modelling of complex dynamical systems based on the Python language and its SymPy and SciPy libraries have been proposed. The Python-classes that allow you to create the models in Python without the need to study and apply specialized modelling languages have been developed. These classes can also be used...

By KOPEI VOLODYMYR BOGDANOVICH, VITALII GEORGIEVICH PANCHUK, OLEH ROMANOVICH ONYSKO, OLEH ROMANOVICH ONYSKO

The aim of this paper is to establish a link between the Big Data, the Internet of Things and the new industry, called Industry 4.0. The development of a modern economy is based on supply chains and logistics. Within each logistics are IT solutions. Some of the world's solutions are given in this paper and guidelines are set in the development of s...

By TIHOMIR S. LATINOVIĆ, DRAGANA PRERADOVIC, CRISTIAN BARZ, M. T. LATINOVIĆ, ADINA POP-VADEAN

Modern technological processing various bulk materials provide high requirements for the quality of input raw materials. As practice shows, penetration of metallic inclusions in the raw material takes place during its extraction and during the passage of individual cycles of the technological process and leads to low quality of the output products,...

By LEONID ZAMIKHOVSKIY, IVAN LEVITSKY

The operational definition of water turbidity is an important step in checking the quality of drinking water. In this work an analysis of existing methods and systems of operational control of turbidity of water was carried out, and design of turbidimeter consisting of a two-channel sensor (measuring and reference channels) and a measuring device (...

By LEONID ZAMIKHOVSKIY, SVITLANA PETRIV

Today, one of the urgent tasks set before the gas transportation system of Ukraine is to ensure the efficient and reliable operation of automated control systems for compressor stations, and in particular automatic control systems for gas-pumping units (GPU). At the same time, automatic control systems of GPU should respond to changes in the techni...

By LEONID ZAMIKHOVSKYI, NATALIA IVANUYK

The lower level of the flood water control system will allow to normalize the analogue signals from the sensors (water level, amount of atmospheric precipitations and soil moisture) for further analysis and represented by four functions, namely: FC1 - the function of normalization of analog signals FC2 - the function of comparison of current values...

By LEONID ZAMIKHOVSKYI, OKSANA BELEY, OLENA ZAMIKHOVSKA

The most promising method for the conditions of operation of the drill string of the existing ones- is a method for predicting the durability of its elements, such as threaded lock joints (TLJ), which are based on the use of a means of individual assessment of load - indicators of fatigue. Taking into account the limited possibilities of the previo...

By LEONID ZAMIKHOVSKYI, OLGA LYSKANYCH

The reliable operation of gas-pumping units (GPU) is due to their current technical state, which needs to be monitored in real-time, requires the use of effective methods for diagnosing GPU. A particularly relevant problem is the assessment of the current technical condition of the GPU GTC- 25I of Nuovo Pignone company, which is installed at the Ur...

By LEONID ZAMIKHOVSKIY, VOLODYMYR PAVLIK

The paper presents the results of theoretical research of the solar energy resource potential calculated by different methods for administrative areas of the Carpathian region. The advanced methodology of the estimation of the solar power plants influence on the natural environment is proposed, which deals with the determination of the significance...

By O MANDRYK, N. MOSKALCHUK, L. ARHYPOVA, M. PRYHODKO, O. POBYGUN

Waste resulting from mining activity is today one of the biggest environmental problems. The mine deposit on the Bozanta Mare site, due to the high content of heavy metals (Pb, Cu, Cd, Zn, Cr, Ni), is a difficult substrate for the installation of a vegetal carpet. Naturally, a small number of species have been installed on the soil with a high conc...

By MONICA LILIANA MARIAN, OANA MARE ROȘCA, ZORICA VOSGAN, LUCIA MIHALESCU

Access to spatial data and services constitutes an important basis for environmental policies for all public authorities and is therefore a central aspect of the Infrastructure for spatial information in the European Community. Since the Community institutions and bodies in most cases have to integrate and assess spatial information from all the Me...

By NIKOLINA DRAGO MIJIC, GABOR BARTHA, TIJANA M. VUJICIC

Everyday life without social media is nearly unimaginable in the digital era. Shortly after the emergence of the first social media, the others followed, experiencing an unprecedented expansion towards all the pores of society, entertainment, cultural, sports, and all forms of life in a modern, developed world. In a relatively short period of time,...

By MILIC MLADEN, D DJURANOVIC

In this paper we present a technological problem encountered in the machining accuracy of the parts for aerospace, made of aluminium alloy extruded profile with 7 meters length. Those parts have very tight tolerances and on milling process appear deviation due to thermal expansion effect, that influence the repeatability of machining processes. Thr...

By STEFAN ADRIAN MOLDOVAN, VASILE NASUI, MARIUS COSMA

The wide application of various regulators in automated control systems of technological objects determines the necessity to solve problems of constructing optimal, adaptive and with expanded functional capabilities of technological controllers. The toolkit for constructing technological controllers is Simatic S7 hardware devices (PLC S7-1200, Freq...

By MYKOLA NYKOLAJCHUK

Photovoltaic (PV) power generation is not only clean green energy but is also especially appropriate for smart grids with distributed power generation. For a good exploitation of a PV system there are some regulations to be respected in accordance with local normative. Voltage and reactive power are two very stringent variables to be monitored. Dur...

By LIVIU NEAMT, LIVIU PETREAN, OLIVIAN CHIVER, MIRCEA HORGOS, SORIN SAVA, ALEXANDRU HOTEA

This work presents computer simulation of mold filling and crystallization for a two-blade drill bit steel billet. Drawing-based models of a two-blade drill bit and its detachable casting mold were developed by SolidWorks. The developed solid model was transferred to the ProCAST program. The preliminary stages of a drill bit cast molding computer s...

By PANCHUK VITALIY, PAVLO PRYSIAZHNIUK, TETIANA PRYHOROVSKA, LUBOMYR ROPJAK, IGOR KOGUT, LUBOMYR BORUSCHAK, SHULYAR IRYNA

The present paper is meant to be a short presentation of the actual stage of nanomaterials used in dentistry. It shows some theoretical considerations regarding characteristics of some nanomaterials used in dentistry. In recent years, increasing demands for dental reconstruction have led to the development of new materials that have multiple applic...

By MONICA POP CORINA, ADINA POP VADEAN, IOANA TAȘCU-STAVRE

In order to access a Romanian academic performance at European level, it is necessary to reconsider integrated management within certain limits described by the Bologna Process. Although it has been over 15 years since the signing of the 1999 Bologna Declaration, we are still far away from being visible in the European Higher Education Area. On the...

By MIHAELA POPA

The use of the smart cell phones is a massive phenomenon and knowledge newer was so close, on one mouse klick or one screen touch. Young people usually adopt the new technology much faster than others groups of people and we assume that this group of people dispose with a broad range of IT skills. Of all different kind of IT skills we are intereste...

By DRAGANA M PRERADOVIC, LJUBIŠA MIĆIĆ

Migrant crisis, slow economic growth and growing disillusionment with the European Union led to strengthening of far-right parties that have achieved electoral success in a number of European countries. The collapse of the national economy has created a huge number of unemployed. New problems such as migrant crisis foster instability in the EU part...

By MILIJANA RATKOVIĆ

The International Covenant on Economic, Social and Cultural Rights has been adopted and open to signature, ratification and accession by General Assembly resolution 2200A (XXI) of 16 December 1966. It entered into force on 3 January 1976 in accordance with Article 27. In the third part Article 6 of the International Covenant on Economic, Social and...

By RODIC VESNA, MIHAELA POPA, MIHAELA ANAMARIA LIHET

According to Leyman, mobing has 5 development phases: 1) Conflict - As a potential basis of mobbing, there is an unresolved conflict among associates, which ultimately results in a disorder in interpersonal relations. 2) Aggressive Behavior - Pushed aggression escalates into a psychotherapist. 3) Involvement of management - In this phase of mobb...

By RODIC VESNA, MIHAELA POPA, MIHAELA ANAMARIA LIHET

The fact that small enterprises in general and small business in bakery industries in special, are organized and lead by a particular style of management, based on own experience and very often intuition where financial resources to run a strong marketing campaign are limited brought to our attention the concept of social responsibility which offer...

By RUS GABRIEL, A.D. POP

Several software quality models have been developed, and the aim was to use them in the production so that it helps in delivering quality products. We will study how the implementation of a quality model helped the business process to improve. We will make a short review of the most used software quality models in production and how they optimize t...

By SABO COSMIN, DIANA HAJDU-MACELARU MARA

There has been formulated definition of scientific and educational information space of technical higher educational institutions in the conditions of modern development of information technologies (information environment). The information models of the scientific and educational process, role functions of participants, influences of new standards...

By LESYA SHKITSA, VOLODYMYR KORNUTA, OLENA KORNUTA, IRYNA BEKISH

In this paper some results concerning fluid flow pattern and the evolution of flame propagation through unburnt mixture of two different hydrocarbon fuels in engine with strong macro flows were elucidated. Results presented in this paper were obtained by dint of multidimensional numerical modeling of reactive flows in very complex geometry of parti...

By SINISA DRAGUTINOVIC, DRAGAN NIKOLIC, MASONICIC ZORAN

The composting is one of the most effective recycling method of green waste. The presence of some heavy metals as Cr2+, Cu2+, Mg2+ and Zn2+ may influence the compost quality. Thus, by adding some components like manure the micronutrients and heavy metals regime suffer changes which might influence their bioavailability for plant uptake. The bioavai...

By SMICAL IRINA, ADRIANA MUNTEAN

This paper proposes new models and possible strategies for revitalization of Romanian railways. Based on the analysis of the issues of rail infrastructure, freight and passengers transportation, there have been identified solutions for future direction in order to solve the main problems of this sector. There have been analysed, also, various finan...

By STET MIHAELA

The subject of the research are the demographic changes determined by the changes that have occured in the technical, technological, economic, social, health and cultural development of Bosnia and Herzegovina and its entities. The aim of the research is to define the concepts needed for understanding the process of demographic aging and to explore ...

By MILAN ŠUŠIĆ

The aim of this paper is to establish some convergence theorems for a Krasnoselskii type fixed point iterative method defined by means of the concept ofadmissible perturbation introduced in [Rus, I. A., An abstract point of view on iterative approximation of fixed points, Fixed Point Theory 13 (2012), No. 1, 179–192] for an asymptotically pse...

By CRISTINA TICALA

Nowadays, the rapid growth and globalization of worldwide workforce have strengthened the perception that English is the lingua franca of international professional communication. Success in business and technology depends on people’s ability to communicate at a personal and professional level beyond linguistic and cultural boundaries; implyi...

By LUMINIȚA TODEA, ANAMARIA FĂLĂUȘ, RAMONA DEMARCSEK

Electronic properties of pulsed laser deposited, nanoscale CeNi5 alloy layers, on a dielectric substrate are described using the complex dielectric function. This spectral behaviour is studied separately for the real part ε1 (the dielectric constant or dielectric permittivity) and imaginary part ε2 (the dielectric loss function) of ...

By TODORAN DANIELA, RADU TODORAN, ZSOLT SZAKACS

The globalization process has increased corruption offenses, among which the crime of the abuse of official position or power is one of the most relevant ones since it has undergone significant changes to comply with the new Criminal Law of the Republic of Srpska. This offense appears when an official or a responsible person gains a personal benefi...

By SUZANA UBIPARIPOVIĆ

U ovom naučnom rada naznačena je definicija samog pojma akreditacije kao i svih neophodnih funkcija koje laboratorija za metaloprerađivačku proizvodnju mora posjedovati da bi se mogla akreditovati. Navedne su osnovne smjernice i proces akreditacije laboratorija za metaloprerađivačku proizvodnju. Navedeni su osnovni elementi standarda koje je neopho...

By VELJKO VUKOVIĆ, LJUBICA ŠUKALO, DEJANA IŽAKOVIĆ

An important aspect of a distributed system regards the design of the communication subsystem meaning the design of its interconnection network. The design of the interconnection network suppose a compromise to achieve some objectives as: high transfer rate, small communication delay, simplicity, scalability, optimal rapport cost/performance. An in...

By ZELINA IOANA, TICALA CRISTINA, MARA DIANA HAJDU-MACELARU, SABO COSMIN

The main goal of this paper was to obtain all acceptable locations for siting of wind turbines in the region of Srebrno jezero lake, near the Danube river, near the borders with the neighbouring Republic of Romania and Republic of Bulgaria. Total of 10 locations for sitting of 2MW wind turbines were accepted. The estimations were obtained using the...

By PREDRAG MIODRAG ŽIVKOVIĆ