The paper propose to mark out the influence of different control parameters of laser beam light over the entire surface thermal treatment applied and, also, the physical and technological proprieties of the stainless steel obtained layer

full text

Implement of Shape Memory Alloy Actuators in a Robotic Hand
Daniel Amariei, Ion Vela, Wolfgang Ziegler

This paper was conceived to present the ideology of utilizing advanced actuators to design and develop innovative, lightweight, powerful, compact, and as much as possible dexterous robotic hands. The key to satisfying these objectives is the use of Shape Memory Alloys (SMAs) to power the joints of the robotic hand. The mechanical design of a dexterous robotic hand, which utilizes non-classical types of actuation and information obtained from the study of biological systems, is presented in this paper. The type of robotic hand described in this paper will be utilized for applications requiring low weight, power, compactness, and dexterity.

full text

The Simulated Process of a Production System using the Extend Program
Olga Ioana Amariei , Guillaume Cavory , Constantin Marta , Daniel Vela

With the help of the simulated process, it could be realized all kind of experiments on a model. It could be tested lots of ideas, a returning in time to make possible remaking of manipulation scripts of some key variables with the purpose of observation based on experiments the effect above some important indicators of performances.

full text

The using of Simulated Models in Management
Olga Ioana Amariei , Guillaume Cavory , Constantin Marta , Raul Maloş

The paper brings up many explanations regarding the understanding of connections between causes and effects, through simulated models. It wishes to establish and simulate some scripts witch concur to the development of a business.

full text

Contributions for Setting the Technological Parameters in Ultrasonic Welding Process of Intelligent Composites with Polymeric Matrix
Gheorghe Amza , Zoia Apostolescu , Tudorel Ene

The paper describes the parameters in ultrasonic welding process of intelligent composites with polymeric matrix. Process parameters are divided in three different categories: technological parameters, mechanical parameters and acoustical parameters. Technological parameters are given special attention, and their influence on welding quality is analyzed.

full text

Theoretical Research Regarding the Modeling of the Ultrasonic Piezoceramic Assembly
Gheorghe Amza , Constantin Radu , Tudorel Ene , Catalin Gheorghe Amza

This paper presents the design of n transducer-tool of an ultraacoustic system for finishing processing through cutting. Finite element modeling of the horn-tool using ANSYS software package allows the analysis of the tension and deformations state along it showing especially the values of the amplitude in the active area.

full text

The Projection of the Classification Systems of Management. Analysis and Evaluation
Solomia Andres

In this paper I want to make the analysis of management styles by applying the methods which allow the assurance of a comparator system, to make possible a calculation of some indicators to differentiate the managers. The analysis conclusion – there aren’t valid universal styles, only different and adaptable styles.

full text

Modern Method Applied to Reach The Organisation’s Objectives – Mixed Project Based Management
Solomia Andres

The paper presents the procedure, the technique and the working instrument, which do not confine only to applying a management principle, but they also contribute to the management’s organisational strentgthening. Promoting this system based on the mixed project management can significantly contribute to the acceleration of introducing new products in the Romanian economy, to the retechnologisation of trade companies and autonomous administration companies on the basis of economical criteria, capitalising on the market economy’s specific mechanisms.

full text

The Gradient Method – A Matriceal Algorithm Used in Optimization
Cornelia Victoria Anghel

In the paper is the mathematical gradient method described and an eloquent numerical example is given. The Matriceal gradient method is used in optimization problems. As the result we obtain the optimum of the function. The advantage of this method is that in some conditions can minimized the order of the matrix.

full text

Multi-Parameter Analysis of Surface Finish in Electro-Discharge Machining of Tool Steels
Cornelia Victoria Anghel , Georgios Petropoulos

The paper presents a multi- parameter analysis of surface finish imparted to tool-steel plates by electro-discharge machining (EDM) is presented. The interrelationship between surface texture parameters and process parameters is emphasized. An increased number of parameters is studied including amplitude, spacing, hybrid and fractal parameters,, as well. The correlation of these parameters with the machining conditions is investigated. Observed characteristics become more pronounced, when intensifying machining conditions. Close correlation exists between certain surface finish parameters and EDM input variables and single and multiple statistical regression models are developed.

full text

Considerations Regarding the Use of the Time- Frequency Representations in Analysis of Vibrations
Florin Constantin Berinde , Gilbert-Rainer Gillich

Time-frequency representations are modern tools in analyzing various signals, including that obtained by measurements of vibrations. A great number of this kind of tools are available, it is the researcher’s expertise which lead to the use of the proper one. The authors, based on their expertise in handling data acquisition and analysis trough timefrequency representations, present in the paper considerations regarding the use of this tools, in connection with the operating system’s performances.

full text

Proper Selection of Ultrasound Level Meter for the Flow Rate Measurement in Open Canals
Sinisa Bikic , Masa Bukurov

There are a great number of ultrasound sensors for the level measuring, as well as ultrasound devices for the flow rate measuring in the market. “The best” sensor for level measuring doesn’t exist, nor exist “the best” flowmeter in open channels. There is only sensor or flowmeter which corresponds in the best manner to a certain project task. The idea of this paper is to give directives how to choose ultrasound level sensor and ultrasound flowmeter which should in a best way relate to a project requirements.

full text

Substantiating the Decision Regarding the Acquirement of Ships used in Seagoing Transport
Ion Botescu

The tonnage call and bid has suffered a cyclic evolution on the international seagoing transport market. More than that, the person that wishes to acquire a ship must take into consideration a series of elements. The economical reasoning as well as the international practice emphasize that the profit coming from exploitation prevails over the initial price of the acquisition when the buyer focuses on a certain type of ship. In the current paper we approach the naval investments problems from this perspective.

full text

The Role of Multinational Companies in the Deployment of Foreign Direct Investments
Ion Botescu

In the last decades multinational firms have become the leading actors of the international markets, including markets in developing countries. A multinational firm’s decision to open a branch or a subsidiary in another country, thus to invest abroad, is based on efficiency criteria, the obtained profit having a primordial aspect. We mustn’t forget the various advantages the host country befits of, here mentioning the transfer of technology. The unprecedented foreign amalgamation of multinational firms was brought on by the continuous liberalization of international commerce and investment fluxes.

full text

Reference Values in Evaluating Effects of Vibrations on Buildings and Persons
Polidor Bratu , Gilbert-Rainer Gillich

Buildings can be affected by vibrations if theirs parameters outgrow certain limits. The nature of the damage is given by the value of this parameters (displacement, velocity or acceleration). The paper presents reference values adopted in different countries regarding the maximum admitted level of vibrations.

full text

The Innovating Enterprise
Jeanina Biliana Ciurea

The technological revolution triggers important transformations at the company level. In the context of the transition towards an economy based on knowledge and of the increasingly sharp competition at the global level, the competitiveness of a company is determined by its capacity to invest in know-how, technologies and knowledge which allow it to optimise the effects obtained at the level of the company as a result of the creation and sale of certain new technologies. In an economy based on knowledge, the competitive company is receptive to the novelties of the environment, able to continuously and rapidly adapt to the changes brought by the technical progress. The managers of great multinational holdings have become aware of the fact that, in the long run, the only way to achieve the continuous improvement of performances, to satisfy the shareholders’ goals of maximising the company value, to increase the employees’ satisfaction, to maintain competitiveness and a top position in the industry where the company operates, is to innovate.

full text

Content Management System Used in Monitoring of a Photovoltaic Plant
Cristian Chioncel , Petru Chioncel , Florin Berinde , Rainer-Gilbert Gillich

The paper presents the facilities of a new content managemnt system (CMS), TYPO3, based on the example of a coomon scientific research portal, between Fachhochschule Gelsenkirchen Germany and the «Eftimie Murgu» University Resita Romania, the so called «Solar Competence Exchange».

full text

Evolution of Multidirectional Wheels Researches
Vasile Cojocaru

The problem of the insufficient space for the internal transport in industrial halls have generated new constructive solutions of wheels, able to facilitate the movement of vehicle in any direction without a rotation of chassis. The main types of multidirectional wheels are presented in this paper (Grabowiecki patent, Mecanum wheel, Kilough platform, Blumrich wheel). In the final part of the paper a graphical analyses of the economized space by omnidirectional vehicles is presented. The paper represents a bibliographical study.

full text

The Computerised Calculus in the Prognosis of the Phase Equilibrium Diagram of the Ternary System Al-Cu-Si
Florentina A. Cziple

The paper presents a model for establishing the mathematical functions of the liquidus and solidus curves, from the binary diagrams Al-Si, Si-Cu, Cu-Al and their use in the prognosis of the phase equilibrium diagram from the ternary system Al-Cu-Si. We have studied the model of the non-ideal liquid solution of the regular type. The calculus and graphic plotting of the equations for the binary systems has been performed on the computer with the software programmes MathCad 2000 Professional, Statistica 5, Curve Expert, and for the ternary system Al-Cu-Si, with the 3D StudioMax software.

full text

The Establishment, Plotting and Statistic– Mathematical Interpretation of the Liquidus Surface from the Phase Equilibrium Diagram of the Ternary System Al-Cu-Si
Florentina A. Cziple

The paper forwards the conclusions of a survey performed on a mathematical model of the phase equilibrium from the ternary system Al-Cu-Si. The author presents the calculus of the statistic equation of the liquidus surface model from this diagram, the plotting and statistical-mathematical interpretation of the results obtained.

full text

Total Quality Management, a New Culture Model of the Enterprise
Constantin Dumitrescu , Olga Ioana Amariei , Raul Malos , Daniel Vela

The paper brings bags of clarifications about concept definition and bases principles of TQM, presenting the critical factors during the implementation of those fundamentals. Also, it has been proposed a lot of models to present the Total Quality Management, being also presented its evolution.

full text

Study Regarding the Behavior of 12Cr 130 (W 4006) Steel for Hydro-Energetic Applications During Welding
Tudorel Ene , Carmen Maria Ene , Dorel Spiru Dumitriu

The topic of the work consists in the research of the W4006 (12Cr 130) steel behavior during welding in order to establish the welding technology for a runner chamber of the hydraulic turbine following: testing the base material of the runner chamber, choice of welding procedure and filler materials, determination of the welded joint chemical composition, determination of the pre-heating temperature, thermal treatment applied after welding, experiments and results.

full text

Application Regarding the Butt-Welding Through Intermediate Melting
Tudorel Ene , Carmen Maria Ene , Dorel Spiru Dumitriu

It consists in presenting butt welding procedure through intermediate melting and its usage for manufacturing cutting tools type drill, tap screw, reamer by welding the active part (made of high-speed steel) to the tool tail (made of unalloyed steel wit low carbon).

full text

Pricing the Innovation for Market Introduction
Danut Tiberius Epure

The factors that influence pricing strategy change over the life of a product concept. The market defined by a product concept passes through four phases: development, growth, maturity, and decline. Briefly, the changes in the strategic environment over those phases are as follows: Market development. Buyers are price insensitive because they knowledge of the product’s benefits. Both production and not a threat since the potential gains from market development exceed those from competitive rivalry. Pricing strategy signals the product’s value to potential buyers, but buyer education remains the key to sales growth.

full text

Future of Computing. Nanotechnology
Florin Frant

Nanotechnology is a field of applied science and technology covering a broad range of topics. The impetus for nanotechnology has stemmed from a renewed interest in colloidal science, coupled with a new generation of analytical tools such as the atomic force microscope (AFM) and the scanning tunneling microscope (STM). Combined with refined processes such as electron beam lithography, these instruments allow the deliberate manipulation of nanostructures, and in turn led to the observation of novel phenomena.

full text

Analysis of Time Discretization and its Effect on Simulation Processes
Gilbert-Rainer Gillich , Cristian Paul Chioncel , Florin Constantin Berinde

The paper presents the influence of time discretization on the results of simulations of technical systems. In this sense the systems are mod-eled using the SciLab/SCICOS environment, using different time inter-vals. Ulterior the processes are simulated and the results are com-pared.

full text

Industrial Sources of Pollution by Vibrations – Causes and Behavior
Gilbert-Rainer Gillich , Florin Constantin Berinde

Pollution by vibrations caused by industrial sources is extremely unpleasant if in their proximity are build areas. The authors present a classification of this kind of sources and the way how the vibrations are produced and propagated. Parameters of vibrations, their attenuation trough the ground and impact on the build structures is also illustrated.

full text

Double Harmonic Transmission (D.H.T.)
Sava Ianici , Draghita Ianici

The paper presents the construction and functioning of a new type of harmonic drive named double harmonic transmission (D.H.T.). In the second part of this paper is presented the dynamic analysis of the double harmonic transmission, which is based on the results of the experimental researches on the D.H.T. This study of the stress status and the forces distribution is necessary for to determine the durability on the portant elements of the D.H.T.

full text

Contributions of Determining the Forces Distribution in the Harmonic Drive
Sava Ianici , Draghita Ianici

The paper presents an original method for determining the forces distributions on the portant elements of the harmonic drives. This method is based on the thin wall shells theory anal on the rotating character of the distributed forces that work upon the flexible toothed wheel.

full text

Causes Analyse of Breakages of Foundation Screws
Sinisa Kuzmanovic , Ruzica Trbojevic , Milan Rackov

The paper deals with problematic of gear units and machine foundating and consequences that occur by foundation screws releasing. Namely, reliable operating of gear units, as well as other stationary machines, requires properly foundating. However, after certain period of time, relaxation of screw material, self-untightening of nuts and looseness of foundation screws influence on reducing the force of preload screw tightening and unequal load distribution. This unequal load distribution causes unequal deformations, which generate occuring vibrations. In extreme cases, breakages of screws and heavier accidents of systems driven by that gear units or machines can happen. With this paper authors want to indicate influence of deterioration degree on its load capacity.

full text

Studies on the Executionof Models Used in Iron Foundry From Epoxidic Resins
Cinca - Ionel Lupinca

The epoxidic resins are materials frequently used in the execution of the models used in iron foundry. This materials can replace casily wood or aluminium in the execution of the models needed in series productions, having better resistance properties and the high dimensional precision. The properties of these resins are obtained from the completion of the epoxibifunctional molecules with supplements. This paper establishes the result of mixing the two components, as well as the supplements used to improve the mechanic and the technological properties.

full text

Workspace of a Planar Robotic Guiding Device with Parallel Topology of FP3+3×RTR+MP3 Type
Calin Miclosina

For a parallel topology robotic guiding device, the workspace frontier can be determined by the topological analysis of its partial frontiers. The principle of method is to determine the workspace of the characteristic point P (referring to robot) on the basis of the geometrical constraints imposed by every connexion introduced between the two platforms (the fixed and the mobile one) and on the basis of the geometrical constraints imposed by the platforms.

full text

On Asymptotic Behaviors for Linear Skew-Product Semiflows in Banach Spaces
Andrea A. Minda , Mihaela A. Tomescu

In this paper we give several characterizations of some asymptotic behaviours: stability, instability, dichotomy and trichotomy of linear skew product semiflows in Banach spaces. The obtained results are generalizations of some well-known results on asymptotic behaviours of linear differential equations. There are also presented several examples of semiflows and linear skew-product semiflows in Banach spaces.

full text

Perron Conditions for Stability of Linear Skew- Product Semiflows in Banach Spaces
Andrea A. Minda , Mihaela A. Tomescu

In this paper we give necessary and sufficient conditions for uniform exponential stability of linear skew-product semiflows in Banach spaces. We give theorems of characterization for uniform exponential stability of linear skew-product semiflows in terms of boundedness of some operators acting.

full text

Prerequisites of the Passage to a Regime of Inflation Targeting
Mirela Minica

The article synthetically presents the main prerequisites of the institutional and technical order we should consider in the context of the National Bank’s adopting a complex policy of inflation targeting.

full text

Numerical Simulation with Finite Element Method of the Plate with Concentrator
Dorian Nedelcu

The paper compares calculus made by Cosmos M Design Star software with classical and statistical calculus for a plate with concentrator.

full text

Tensile Test Numerical Simulation with Finite Element Method
Dorian Nedelcu

The paper compares calculus made by Cosmos M Design Star software with classical tensile calculus, statistical values and with experimental tensile test for standard tension test specimen.

full text

Some Aspects Concerning Convective Transfer of Furnace Operations
Nadia Potoceanu , Adela-Maria Cornean

Majority of the process are convective, with turbulence. With establish turbulence, the rate of heat transfer in various regions is so high that may be regarded as infinite. The turbulent state of the main mass of flow to which turbulent affects the thickness of the boundary layer is specifying in this case, especially in tunnel furnace.

full text

The Modeling and Simulation of Braking-off Voltage at Hydro Generator Stator Winding Insulation
Mihaela Raduca

This paper presents the modeling and simulation of braking-of voltage at hydro generator stator winding. The winding stator is supplied at high voltage of 11 kV for high power hydro generator. The braking-of voltage for stator winding is 40 kV.

full text

Investigation of Detection Circuits for Fast Level Detection within a SDARS Diversity System
Eugen Raduca , Stefan Lindenmeier , Cornel Mituletu , Mihaela Raduca

In the paper is presented a proposal solution to use in the Diversity System SDRAS for realized a fast detection of transmitted signal through this system at reception.

full text

Synchronizing multiple DACs and ADCs for future use in a 4x4 MIMO demonstrator
Eugen Raduca , Berthold Lankl , Sorin Jian , Mihaela Raduca

In this paper is presented a synchronized method used for the synchronizing of DACs and ADSs. This method was used at synchronizing a two DACs and two ADCs.

full text

Knowledge Management Framework Proposal – Case Study “Babes Bolyai” University
Lucia Rusu

Based on production process in companies we developed a model of knowledge management that can be implemented in our university. This model is using organizational knowledge base of three entities: the research engine, the production engine and the learning engine. We try to identify several direct and indirect feedback from the production process and research process linked with external demands and internal university objectives. This model can be implemented on World Wide Web and Internet technologies using collaborative model.

full text

The Analysis on the Bouys Used on the River for Making a Non-Conventional Energetic System
Gheorghe Samoilescu

River buoys separate themselves from the maritime ones by their special construction which provide them with a low draft and their stability is calculated for waves of small height and short period. The tail of these buoys is usually made out of one cylinder with a big diameter. The river buoys are technically capable to ensure the surveillance of the pass on special sectors, on sectors in which the level of the water is fluctuating or nearby islands or ports.

full text

Electromagnetic Field Influence upon the Electroenergetic System of the Ship
Gheorghe Samoilescu

It is presented a global evaluation criterion of the perturbation magnetic field of a volume, which presents interest. It is determined the medium volume density of the magnetic field energy in the interested volume and correspond the medium value of the electromotive force (e.m.f.) which is induced in a single winding. The medium value of the e.m.f. is considered to be an evaluation criterion of the electromagnetic compatibility.

full text

Mathematical Model and the Simulation of Electrical Arc Welding as Moving Source in Protector Gas Welding
Lenuta Suciu , Iancu Tatucu

The works presents the mathematical model of electrical arc welding, simulation of the electrical arc as a moving source with help programs software Ansys, passing through three stage of simulation: pre- processing, processing (solution) and post-processing.

full text

Uncoupled Thermo - Mechanical for the Determination of Welding Deformations
Lenuta Suciu , Iancu Tatucu

Simulation of the welding process for butt and tee joints using finite element analyses are presented. The simulation are performed with the commercial software Ansys, which includes mathematical model, temperature dependent material properties, transfer and mechanical analyses. One way thermo – mechanical coupling is assumed.

full text

On Simulation of Electromagnetic Devices with Standard Coils
Iancu Tatucu , Lenuta Suciu

For many electromagnetic devices, the field coils may be considered as being stranded, i.e. we may neglect the surface effect. We thus consider such a coil with N turns (windings), the transversal section of one turn Sc, the space factor s, supplied with electric voltage Ur. We term Sb the sectional area of the coil, but many simulation software programmes are conceived to admit only massive electric conductors supplied in voltage. Consequently, it is imposed that a massive conductor replaces the coil, with the same geometry as the coil and having the cross section equal to Ss In order to ensure, that the electromagnetic process takes place in a way similar to the case of the real coil, the power supply of the conductor should be made with a reduced voltage. The paper establishes the connection relation between these voltages according to the parameter, which we desire to keep unchanged.

full text

Numerical Model for the Study of Electromagnetic Processes in non-Stationary Regime
Iancu Tatucu , Lenuta Suciu

The non-steady (non-stationary) state of many electromagnetic processes encountered in the industrial practice may be considered as quasi-stationary, in the sense that in all conducting parts one may neglect the capacitance current compared to the line current. The most frequently used model for such a process is the mathematical model of electromagnetic potentials.

full text

Nonuniform Exponential Stability and Instability of Evolution Operators in Banach Spaces
Mihaela Tomescu , Andrea Minda

In this paper is presenting a parallel between nonuniform exponential stability and nonuniform exponential instability of evolution operators in Banach spaces, beginning to present the concept of the evolution operator with nonuniform exponential decay, respectively growth, next with the concept of the nonuniform stability, respectively instability, nonuniform exponential stability, respectively instability, nonuniform integrable stability, respectively instability and relationship between this concepts.

full text

Nonuniform Exponential Dichotomy of Evolution Operators in Banach Spaces
Mihaela Tomescu , Andrea Minda

The aim of this paper is to present notion of the nonuniform exponential dichotomy of evolution operators in terms of nonuniform integral exponential dichotomy.

full text