Revista


31-37 PIERDERILE PE LINIA DE ALIMENTARE A UNUI CONSUMATOR TRIFAZAT LEGAT ÎN STEA

THE SUPPLY LINE LOSS OF A  THREE-PHASE LOAD IN STAR CONNECTION

 

The electrical power system usually operated in a symmetrical three-phase steady state mode. But, there are certain situations that can cause non-symmetrical operations. The presence of the unbalanced three-phased loads induce the apparition of  the non-symmetrical systems involving currents and voltages as well the extra-loss within the supply wire. In this work we present a mathematical proof in Mathcad of additional losses in the electrical energy transmission line working under non-symmetrical conditions. Was considered a simplified model in star connection, but the obtained result generalizes to complex electrical circuits. Finally, we  show the conclusions and references.

 

Keywords: three-phase load, star connection, active power, electrical energy transmission line, supply line loss, unbalanced functioning regime, mathematical proof in the Mathcad of additional losses under unbalanced conditions

Cuvinte cheie: receptor trifazat, conexiune în stea, putere activă, linie de transport a energiei electrice, pierderi pe linia de alimentare, regim dezechilibrat de funcţionare, demonstraţie matematică în mediul Mathcad a pierderilor suplimentare în regim dezechilibrat

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31-36 UTILIZAREA APLICAȚIILOR MATEMATICE LA PROGNOZA CONSUMULUI DE GAZE

APPLICATIONS USAGE MATHEMATICS AT THE

FORECAST OF GAS CONSUMPTION

 

Moldova’s energy sector represents a strategic branch of the national economy. The level of development of this sector essentially determines macroeconomic stability and energy security of the country and the success of strategies and programs to achieve national economy.

 

Keywords: energy, forecast, natural gas consumption, gas consumption growth

Cuvinte cheie: energie,  prognoză,  consum de gaze naturale, dinamica consumului de gaze

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31-35 GOSPODĂRIREA ENERGIEI ÎN ROMÂNIA

ENERGY MANAGEMENT IN ROMANIA

 

January 2017 was a month of authentic winter in Romania. But this winter has revealed the real state of energy management in our country. This article represents the thoughts and concerns of „ordinary mans” related to the management of energy in Romania.

 

Keywords: thermal energy, electricity, energy management

Cuvinte cheie: energie termică, energie electrică, gospodărirea energiei

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31-34 CONSECINŢE PEDAGOGICE ALE INSTRUIRII ASISTATE PE CALCULATOR DIN PUNCT DE VEDERE AL STIMULĂRII IMAGINAŢIEI, DEZVOLTĂRII GÂNDIRII LOGICE ŞI A CREATIVITĂŢII

CONSEQUENCES OF TRAINING PEDAGOGICAL COMPUTER ASSISTED IN TERMS OF IMAGINATION STIMULATION, DEVELOP LOGICAL THIKING AND CREATIVITY

 

Integration of educational technologies in the formative education requires the school to focus on the development of thinking, by selecting this content, methods, forms and training and assessment criteria, i.e. to develop educational technology that develops a certain style of learning with lasting effect.

 

Keywords: training pedagogical computer, imagination, creativity, logical thinking

Cuvinte cheie: instruirea asistată de calculator, imaginație, creativitate, gândire logică pedagogică

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31-33 METODA ORGANIZATORULUI GRAFIC ÎN DEZVOTAREA CREATIVITĂȚII LA STUDENȚI (ELEVI)

METHOD DEVELOPEMENT OF CREATIVITY IN GRAPHIC ORGANIZER TO STUDENTS

 

The paper present aspects of a mix of modern techniques interactive and traditional so that theeducation itself to meet the current needs of students, can boost the capabilities available to them to be as attractive and practical so trhat it can keep the interest to participate activfely in the activities proposed and carried out.

 

Keywords: graphic organizer, active learning method, spider dioagram map (spiderweb)

Cuvinte cheie: organizator grafic, metodă de învățare activă, hartă diagrama păianjen

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31-32 EVALUAREA, METODE, TEHNICI DE EVALUARE, ROLUL EVALUĂRII

EVALUATION, METHODES, SKILLS ASSESMENT, EVALUATION ROLE

 

In this paper presents the role of evaluation in education. It also brings into focus the importance of evaluating teacher’s and how they must assume the role of assessment depending on the techniques and methods used in the evaluation.

 

Keywords: evaluation methods, skills assements, evaluation role

Cuvinte cheie: metode de evaluare, evaluarea competențelor, rolul evaluării

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31-31 ÎMBUNĂTĂȚIREA MANAGEMENTULUI UNIVERSITAR PRIN UTILIZAREA UNOR METODE DE EFICIENȚĂ – UN STUDIU DE CAZ PRIN METODA DEA

THE IMPROVEMENT OF UNIVERSITY MANAGEMENT BY THE USE OF EFFICIENCY METHODS –

A CASE STUDY IN DEA

 

The value of a university is how it relates to the society’s needs, to the quality assurance regarding the preparing of specialists in various areas of activity, as well as to the performance of research activities and scientific development. This paper illustrates the application of Data Envelopment Analysis (DEA) to evaluate the relative efficiency of public universities in Romania. The results of this study show that DEA application to assess relative efficiency among public universities in a certain country is a reliable approach by providing quantitative indicators for comparative analysis.

 

Keywords: DEA, efficiency, analysis, teachers, students

Cuvinte cheie: DEA, eficiență, analiză, profesori, studenti

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31-30 STUDIU PRIVIND ÎMBUNĂTĂȚIREA ACTIVITĂȚII UNUI CENTRU DE CERCETARE

STUDY ON IMPROVING THE ACTIVITY OF

A RESEARCH CENTRE

 

The study started from anticipating and identifying changes related to the research center, defining strategic objectives and building both imaging research center, its work and relations with partners/ customers. The novelty developed in this study is to address three successive analytical methods and the use of two software MACTOR (Méthode ACTeurs, Objectifs, Rapports de force) and Micmac.

 

Keywords: research, strategic analysis, scouting

Cuvinte cheie: cercetare, analiză strategică, prospecție

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31-29 IMPACTUL BRANDURILOR FARMACEUTICE ASUPRA DECIZIEI DE CUMPĂRARE ÎN RÂNDUL CONSUMATORILOR – STUDIU DE CAZ

IMPACT ON PHARMACEUTICAL BRANDS AMONG DRUG PURCHASE DECISION – A CASE STUDY

 

This study aimed to provide answers on the impact of medicines promotions on consumer behaviour. Article consists of the synthesis of the literature in the field of sales of medicinal products, analyse the current state of the theme and issues relating to the improvement of consumer behaviour on buying medicines, influenced by using modern means of promotion by pharmaceuticals brands. The article originality is provided by exploratory research undertaken, literature synthesis which provides an understanding of the mechanism of drug consumption behaviour under the influence of modern methods of promotion.

 

Keywords: brand medicines, consumer behaviour, market         Cuvinte cheie: brand de medicamente, comportamentul consumatorilor, piața farmaceutică

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31-28 DESPRE IMPORTANŢA TERAPIILOR COMPLEMENTARE

ABOUT THE IMPORTANCE OF THE

COMPLEMENTARY THERAPIES

 

The main aim of this article is to achieve a synthesis of the situation caused by musculoscheletal pain disorders, with a focus on the low back pain (Lower Back Pain), cost, implications, and to what extent complementary approaches can be an aid în order to meet the empowerment of individuals, their families, society and în effect of reducing the number of deceased persons due to the negative effects produced by drugs. This synthesis is based on the data published în the U.S., the data found for Romania and Europe are inadequate and irrelevant în order to draw a conclusion. However, there are some data presented and compared the U.S. and European countries including Romania and not only, as the level of investment în the sector of medical care services for the population.

 

Keywords: health, complementary therapies, lifestyle, obesity, vibration

Cuvinte cheie: sănatate, terapii complementare, stil de viață, obezitate, vibrații

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31-27 ARHETIPUL CONCENTRIC ȘI INELELE LUI LIESEGANG

CONCENTRIC ARCHETYPE AND LIESEGANG RINGS

           

The concentric rings is one of the most common archetypal structures are to be monitored at macro/microcosmic full diversity of natural structures of concentric rings similarities, connections, analogies, putting together physical phenomena of segregation, standing waves and osmotic ring diffusion periodic precipitation process phenomena Liesegang type.

 

Keywords: concentric, Liesegang rings, biosphere, fluid, chiral, stationary  chemical wave, biostructure

Cuvinte-cheie: concentrice, inele LIESEGANG, biosferă, fluid, chiral, val chimic staționare, biostructură

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31-26 DE LA TĂBLIŢĂ LA TABLETĂ ÎN PARADIGMA INCERTĂ A DEZVOLTĂRII GLOBALE

TABLET TO THE TABLE IN GLOBAL

DEVELOPMENT PARADIGM UNCERTAIN

 

The author, specialist and promoter of the IT&C and knowledge management, present a synthesis evolution IT&C the last decades paradigm uncertain global development. Selected most representative events that marked shift towards the knowledge society

 

Keywords: blackboard, tablet, electrification, assistant versatile computer, radio reception, telephone, mobile phone, mechatronics, robotics

Cuvinte cheie: tăbliţă, tabletă, electrificare, AIV, recepţie radio,  telefonie, radiocomunicaţii, telefon mobil, mecatronică, robotică          

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31-25 BIOCIBERNETICA – DOMENIU INTERDISCIPLINAR FUNDAMENTAL

BIOCYBERNETICS – FUNDAMENTALLY

INTERDISCIPLINARY FIELD

 

The paper „Biocybernetics-fundamentally interdisciplinary field-aspect”, shows the connection between cybernetics and cybernetic processes, systems modelling, homeostasis adjustment mechanisms, self-regulation, the psychic powers of human neural, canal system for the transmission of information, information transmission, signal processing, the general scheme of a simple system of transmitting information and ends in that whole nervous system is a huge system of transmission and processing of the information received from the surrounding world or from within your own body.

Keywords: bio-cybernetics, message, trimming signals, information

Cuvinte cheie: biocibernetica,  mesaj, aranjarea semnalelor, informație

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31-24 LIMBA FRANCEZĂ ÎN PUBLICAȚIILE ȘTIINȚIFICE

FRENCH language IN SCIENTIFIC PUBLICATIONS

 

This paper proposes to review the languages in which scientific articles were written in the past and are written in the present. We can remark two antithetic phenomena the supremacy of English and the decay of French a fact which leads, at least for the moment, to the instauration of a single language in the sphere of sciences.

Keywords: scientific publications, decay of French, unique language

Cuvinte cheie: publicații științifice, decadența limbii franceze, limbă unică

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31-23 ARME ŞI MUNIŢII CUGIRENE (Oportunităţi, evoluţie, starea actuală)

The paper present the factual arguments and evidence made physical changes in the methods of weapons Cugir from being a craft to modern technologies, over hundreds of years, giving it status of „Armoury Acredited”.

 

Keywords: permanent museum exhibition, heritage, rifle, bullet, armory, sword, rapier, necropolis

Cuvinte Cheie: Expoziţie muzeală permanentă, patrimoniu, puşcă, glonţ, armurier, sabie, spadă, necropolă

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31-22 STANDARDIZAREA ŞI ORAŞUL INTELIGENT

STANDARDIZATION AND SMART CITY

 

Standards are applied to the design, construction and performance of the equipment and components integrated in smart cities and smart buildings. Technical standardization committees are focused on developing and revising standards ensuring interoperability in real time in order to improve services related to urban communities. The presentation will contain information about the technical committees of the international (including European) standardization organizations and reference standards which contributed to the long-term development of the intelligent cities by defining the necessary guidelines for leading and measuring the urban service performance and the quality of life. We present standards about global information infrastructure, internet protocol aspects and next-generation networks, Internet of Things reference model and functional groups, Machine-to-Machine communications (M2M), Smart Energy Infrastructures security, review of existing security measures and convergence investigations. Finally we presented societal security – Emergency management, which are implemented in the smart city.

 

Keywords: smart city, standardization, IoT, M2M, societal security

Cuvinte cheie: oraş inteligent, standardizare, IoT, M2M, securitate societală

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31-21 O ALTERNATIVĂ EFICIENTĂ A ECONOMIEI LINIARE: ECONOMIA CIRCULARĂ

AN EFFECTIVE ALTERNATIVE TO LINEAR ECONOMY: CIRCULAR ECONOMY

 

According to previous European Commissioner for Environment- Janez Potocnick, “Improving our economic well-being and also to our environment was once considered the solution taking into account all aspects of the problem. Now this is called circular economy”. Nowadays, our model of mass production and consumption challenge in a dangerous limits and resources of the world and threatens the sustainability and stability through the prism of our own future as population. The economic factor of consumption based on the phrase “buy-use-throw“, which implies the existence of large quantities of raw materials, cheap and readily available, is about to reach its physical limits of sustainability. Circular economy appears to be an attractive alternative and viable, so large international companies, and also large organizations and interstate forums have already begun to consider and explore the concept.

 

Keywords: linear economy, circular economy, ecological footprint

Cuvinte cheie: economie lineară, economie circulară, amprentă ecologică

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31-20 PARADOXURILE INERENTE MANAGEMENTULUI

INHERENT PARADOXES OF MANAGEMENT

Paradoxes explains the need for management within institutions and the need for a continuing concern for improving the expertise of those who occupy leadership positions, such steps to limit the impact of these paradoxes, and allow materialization targeted goals and objectives in a reasonably efficient manner.

 

Keywords: paradoxes of management, motivating staffCuvinte cheie: paradoxurile managementului, motivarea personalului

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31-19 PREGĂTIREA ȘI DEZVOLTAREA PROFESIONALĂ – CALEA PERFORMANȚEI ÎN ORGANIZAȚII

PROFESSIONAL DEVELOPMENT AND TRAINING– PERFORMANCE ROUTE IN ORGANIZATIONS

 

Professional development followed by continuous training should be a priority for both the organization and the employee, the common desire to make performance. Professional training is a process during which participants acquire theoretical and practical knowledge necessary for their present activity. Unlike training, professional development is a more complex process, aimed at acquiring useful knowledge, both in relation to the current position and with the future.

 

Keywords: professional training, professional development

Cuvinte cheie: pregătire profesională, dezvoltare profesională

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31-15 ASPECTE PRIVIND ISTORICUL AUTOMOBILULUI ROMÂNESC – Partea a III-a

ASPECTS OF HISTORY ROMANIAN CAR – part III

 

At the beginning of last century, Romania was one of the richest European countries, among the first 10 countries that have introduced the car since its inception.

It presents the first transport vehicles in Romania dates back to 1895 are represented by two hybrid trucks with steam. „The Karaso” Simplon exotic convertible is a car made in Resita, in the style roadsters from the 50s. Vintage cars are not just cars, they can be considered on its own history on wheels, ideal combination for nostalgic times in which power was aesthetics, elegance and refinement. The oldest car in the west is a nice Ford Model A, 1928. The tradition left by the big names in automotive construction must be respected, promoting the work of some young Romanian students from technical universities and their achievements: University „Ovidius” in Constanta, Technical University „Gh. Asachi” University and University of Pitesti.

 

Keywords: car, inventions, „The Karaso” Simplon, vintage cars, technical achievements student

Cuvinte cheie: automobil, invenții, ”De Karaso” Simplon, mașini de epocă, realizări tehnice studențești

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31-14 ASPECTE PRIVIND ISTORICUL AUTOMOBILULUI ROMÂNESC – Partea a II-a

ASPECTS OF HISTORY ROMANIAN CAR – part II

 

Initiative and passion for the car has not disappeared in Romania, our country having a rich past in achievement. It presents some cars Romanian construction: the first car Romanian – Dumitru Vasescu first car aerodynamics in the world invented by Romanian Aurel Persu, the car „Rodica” – prototype designed entirely by engineer Nicolae Lucaci in Brasov and completed in 1957, the car ” George Gal „- homemade 50s car built by George Gal of Bucharest, Oszkar Beke car, roadster MR (1945) built by Radu Manicatide, an engineer known in the 40s and 50s for its achievements in aeronautics, automobile Virgilius Justin Capra and „Hamster”, a car designed for the Romanian Army troops parachute.

 

Keywords: Romanian automobile, inventions, Dumitru Vasescu car, Aurel Persu aerodynamic car, car „Rodica” car „George Gal” – Oszkar Beke car, roadster M.R., cars Virgilius Justin Capra and „Hamster”

Cuvinte cheie: automobile românești, invenții, automobilul Dumitru Văsescu, maşină aerodinamică Aurel Perșu, automobilul „Rodica”, automobilul ”Gheorghe Gal” – automobil Oszkar Beke, roadsterul M.R., automobile Virgilius Justin Capră și ”Hamster”

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31-13 ASPECTE PRIVIND ISTORICUL AUTOMOBILULUI ROMÂNESC – Partea I

ASPECTS OF HISTORY ROMANIAN CAR

part I

 

Many important inventions are known to authors who have not achieved them, or inventing their primacy being given to others. In the absence of laws on copyright, missing which led to the bankruptcy of producers who did not could recover the investment, if inventors wrong in most cases it comes down to recognition late, to a mere „making aware „of inventions attributed incorrectly. It is presented in a case known: the series car. Inventor „official”: Henry Ford, inventor real: Karl Benz. It is considered that Henry Ford who revolutionized automobile history both through design changes, and especially by the big production number where his car, Ford Model T, was conducted.

The article analyzes the case of the first car manufactured 100% Romanian legal territory of Romania: Malaxa or Matra (conducted in Arad when it belonged to the Austro-Hungarian Empire).

 

Keywords: car, inventions, Henry Ford, Karl Benz, the first 100 % Romanian car, Malaxa, Matra

Cuvinte cheie: automobil, invenții, Henry Ford, Karl Benz, primului autoturism 100 % românesc, Malaxa, Matra

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31-12 VEHICULELE ELECTRICE, TRECUT, PREZENT ȘI VIITOR

LES V́ḖHICULES ÉLECTRIQUES, PASSÉE PRESENT

ET AVENIR

 

Il s’agit en principal, des voitures actionnés par la force électromotrice de moteur(s) électrique(s) alimentée soit par une batterie électrique, soit par une pile a combustible (hydrogène ou méthanol) soit actionnés par un moteur électrique en combinaison avec un moteur thermique classique, Wankel, ou Stirling ainsi nommées hybrids. Tel sorte des véhicules sont fabriquées par des compagnies de USA, d’Europe, Chine, Japon.

 

Mots-clefs: véhicules électriques, véhicules hybrides, moteurs électriques, batteries électriques,  pile a combustible

Cuvinte cheie: vehicule electrice, vehicule hibride, motoare electrice, baterii electrice,pile de combustie

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31-11 PERFORMANȚĂ TEHNICĂ DEOSEBITĂ – TRANSLAREA MONUMENTELOR ȘI CLĂDIRILOR PRIN METODA ”IORDĂCHESCU”

PERFORMANCE SPECIAL TECHNIQUES – MONUMENTS AND BUILDINGS USING TRANSLATION OF „IORDĂCHESCU”

 

In the midst of remodelling during the extensive campaigns systematization that has undergone Bucharest following the earthquake of March 4, 1977, and ambition Ceausescu to shape city image and likeness urban centres North Korea, they have fallen victim to many buildings and not less than twenty-nine religious buildings dating from the eighteenth and nineteenth century. In those circumstances, the engineer Eugeniu Iordăchescu, then technical director of the Institute Project Bucharest, dared professional and moral to propose process whole new translation buildings and to press the authorities to save not less than ten buildings worship, and the Synodal Palace courtyard Antim Monastery, and he aimed for demolition.

Original in terms of design, technology implementation and transport equipment translation solution developed then is a special performance, which requires recognition and gratitude.

An example of how courage and civic awareness Dr.Ing. Eugeniu Iordăchescu can boost technical performance and have the most spectacular consequences in practical sphere.

 

Keywords: art, monuments and buildings translation, publication, assembly Hermitage monastery nuns, teaching activity

Cuvinte cheie: performanță tehnică, translatarea monumentelor și clădirilor, publicații, Ansamblul mănăstiresc Schitul Maicilor, activitate didactică

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31-10 CEI NOUĂ PILONI AI NOII REVOLUŢII INDUSTRIALE – INDUSTRY 4.0

THE NINE PILLARS OF THE ACTUAL INDUSTRIAL REVOLUTION – INDUSTRY 4.0

 

The paper presents a new concept of manufacturing, introduced by stakeholders from Germany, aiming to strengthen the competitiveness of the manufacturing industry. The idea is to interconnect machines, people and computers in order to ensure flexibility and permit achieving tailored products in mass production lines. It bases on nine pillars, which are presented at the end of the paper, together with examples from local industries.

 

Keywords: Industry 4.0, industrial revolution, production system, technology, interconnection

Cuvinte cheie: Industrie 4.0, revoluţie industrială, sistem de producţie, tehnologie, interconectare

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31-9 EVOLUŢIA ŞI PERSPECTIVE ALE ROMÂNIEI ÎN UE

DEVELOPMENT AND PROSPECTS OF ROMANIA IN THE EU

 

EU industry is the most important economic activity, there are traditions of innovation will continue investing in innovation and supporting research and ecological investment. Romania significant advances in these areas in recent years, reducing the gap with the EU average, but still not enough, and further efforts are necessary.

 

Keywords: EU, Romania, innovation, talent fruition, GDP/capita GDP / in habitant, patent

Cuvinte cheie: UE, România, inovare, fructificare talente, produs intern brut / cap de locuitor PIB/loc, brevet de invenție

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31-8 EFECTUL FOTOELECTRIC ȘI EINSTEINUL (Es) – UNITATEA DE MĂSURĂ A RADIAŢIEI LUMINOASE, Partea a II-a

PHOTOELECTRIC EFFECT AND EINSTEIN (Es) –

RADIATION MEASUREMENT UNIT LIGHT – PART II

 

Albert Einstein in his honour, in recognition of his scientific contributions and merit, his name has been assigned to a unit of luminous radiation – Einstein (Es) representing the energy of a mole of photons transmitted to an electron and the 99- th element of the periodic table (actinide) was named einsteinium (Es). The main sizes photometers, photon and radiometric showing their name (in Romanian, English and French), the symbol/notation used and the unit of measurement, as well as some conversion factors between certain sizes radiometric, photometric and photonics are presented in tabular form.

 

Keywords: units of light radiation, Einstein (Es), sizes photometric, radiometric and photonics, conversion factors, tabular presentation

Cuvinte cheie: unități de măsură a radiaţiei luminoase, einstein (Es), mărimi fotometrice, fotonice şi radiometrice, coeficienţi de conversie, prezentare tabelară

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31-7 EFECTUL FOTOELECTRIC ȘI EINSTEINUL (Es) – UNITATEA DE MĂSURĂ A RADIAŢIEI LUMINOASE, Partea I-a

PHOTOELECTRIC EFFECT AND EINSTEIN (Es) –

RADIATION MEASUREMENT UNIT LIGHT – PART I

 

It presents aspects of the life of Albert Einstein, physicist and exceptional man, whose existence was conducted under a single slogan: „Die Freude am Denken” – the joy of thinking. The five famous theoretical works published by Albert Einstein in 1905 had a profound effect on the development of modern physics.

The work on the phenomenon called the photoelectric effect will bring Nobel Prize for Physics in 1921 (reason premiers: „Research in theoretical physics and the discovery of the photoelectric effect”).

 

Keywords: photoelectric effect, Nobel Prize for Physics, published works by Albert Einstein

Cuvinte cheie:  efect fotoelectric, premiul Nobel pentru fizică, lucrări publicate de Albert Einstein

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31-6 FIZICIANUL ALBERT EINSTEIN, PĂRINTELE TEORIEI RELATIVITĂŢII Partea a II-a

PHYSICIST ALBERT EINSTEIN,

PARENT THEORY OF RELATIVITY – PART II

 

Albert Einstein (b. March 14, 1879, Ulm – d. April 18, 1955, Princeton) was a theoretical physicist ethnic Hebrew, born in Germany, stateless since 1896, Swiss 1899, emigrated in 1933 in the US, naturalized American in 1940, professor at Berlin and Princeton. He was the author of relativity theory and one of the most brilliant scientists of mankind. In 1921 I was awarded the Nobel Prize in Physics.

Send famous letter to US President Franklin D. Roosevelt, stressing the need to atomic bomb production, as there is the possibility that the German government to use this plan. Einstein’s letter helped precipitate the efforts to obtain the atomic bomb in the United States. It should be noted, however, that Einstein had no direct personal role in its manufacture, after expressing his indignation regarding the bombing of Hiroshima and Nagasaki.

 

Keywords: Albert Einstein, the first American atomic bomb, letter to US President Franklin D. Roosevelt

Cuvinte cheie: Albert Einstein, prima bombă atomică americană, scrisoare către președintele SUA, Franklin Delano Roosevelt

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31-5 FIZICIANUL ALBERT EINSTEIN, PĂRINTELE TEORIEI RELATIVITĂŢII, Partea I-a

PHYSICIST ALBERT EINSTEIN,

PARENT THEORY OF RELATIVITY – PART I

 

Albert Einstein (b. March 14, 1879, Ulm – d. April 18, 1955, Princeton) was a theoretical physicist ethnic Hebrew, born in Germany, stateless since 1896, Swiss 1899, emigrated in 1933 in the US, naturalized American in 1940, professor at Berlin and Princeton. He was the author of relativity theory and one of the most brilliant scientists of mankind. In 1921 I was awarded the Nobel Prize in Physics. It shows various mysteries personal life of the famous scientist, who apparently was at least as complicated and full of oddities as the theory that revolutionized the world of science. It is shown that Einstein’s famous formula, E = mc2 has finally been established, thanks to a team effort of physicists from France, Germany and Hungary.

 

Keywords: Albert Einstein theory of relativity. Nobel Prize Einstein’s famous formula, E = mc2

Cuvinte cheie: Albert Einstein, teoria relativității. Premiul Nobel, celebra formulă a lui Einstein, E = mc2

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31-4 CÂTEVA GÂNDURI DESPRE PROFESORUL EMERIT POMPILIU NICOLAU

EINIGE GEDANKEN ÜBER DEN EMERITIERTEN PROFESSOR POMPILIU NICOLAU

 

Der Beitrag bezieht sich auf einen Hochschullehrer den man als Gründer der rumänischen Wasserkraftwerken betrachten kann. Der erste Teil zeigt seine Tätigkeit und Erfolge. Im zweiten Teil sind die Meinungen und die Würdigungen seiner ehemaligen Studenten vorgestellt zu Erläuterung dem wissenschaftlichen Wert in der Ausbildung der zukünftigen Spezialisten im Wasserbau.

 

Stichwörter: Wasserkraftwerk, Hydraulik, Versuchskreislauf, Wasserbau, hydrodynamische Ähnlichkeit

Cuvinte cheie: centrală hidroelectrică, hidraulică, circuit experimental, construcţie hidrotehnică, similitudine hidrodinamică

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31-3 ROLUL EDUCAŢIEI ŞI AL FORMĂRII INTELECTUALE ÎN RELAŢIILE DINTRE DORIN PAVEL ŞI LUCIAN BLAGA

THE ROLE OF EDUCATION AND INTELLECTUAL TRAINING IN RELATIONSHIPS BETWEEN DORIN PAVEL AND LUCIAN BLAGA

This short paper outlines the role of education in human relationships, but mostly the one between Lucian Blaga and Dorin Pavel. The biographies of the two Romanian personalities help us realise how intellectual training gets developed within a lifetime. Dorin Pavel was Lucian Blaga’s nephew and he was born on May 31, 1900 in Sebes, as the son of a schoolteacher named Ion Pavel and his wife, Letiţia. In 1935 he became a professor at the Polytechnic University in Bucharest. On the other hand, Lucian Blaga was born on May 9, 1895 in Sebes, as the son of a priest. He became a poet and a philosopher.

Keywords: Dorin Pavel, Lucian Blaga, relationships, the role of education

Cuvinte-cheie: Dorin Pavel, Lucian Blaga, relaţii, rolul educaţiei

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31-2 AMINTIRI DESPRE DORIN PAVEL, Partea a II-a

Deși ne vorbise în cursurile sale de utilizarea apelor în scopuri multiple și încă din 1956 fusese numit membru în Comitetul de Stat al Apelor și, în această calitate, participa la ședințele consiliului tehnic al apelor care aviza toate proiectele comitetului, Dorin Pavel nu s-a implicat deloc în activitățile legate de elaborarea planurilor de amenajare pe bazine hidrografice sau ale schemelor de amenajare legate de amenajările hidrotehnice. Explicația probabilă este faptul că în anii 1960 dezvoltarea economică a României permitea să se treacă la realizarea simultană a unui număr important de lucrări hidrotehnice și devenea necesară o selecție a lucrărilor la care colabora. Chiar dacă a avut o contribuție foarte importantă ca consultant pentru diferite proiecte, Dorin Pavel dorea să fie implicat direct în toate fazele de realizare a lucrărilor: proiectare, urmărirea execuției și recepția lucrărilor, nu în elaborarea unor referate de expertiză. De aceea, el a ales să se dedice în special construcției de centrale hidroelectrice, meserie pe care și-o alesese încă din tinerețe, iar dintre acestea a selecționat cele care îl atrăgeau în mod deosebit: cele de pe Sebeș, care era râul copilăriei sale pentru care avea o slăbiciune deosebită, cele de pe Lotru, pe care le descrie ca prezentând un record mondial de complexitate, depășind-o pe cea a sistemului Grande Dixence și centrala Porțile de Fier de pe Dunăre.

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31-1 AMINTIRI DESPRE DORIN PAVEL Partea I

În perioada în care eram studenți, fiecare dintre noi am avut profesori, care ne-au inițiat în tainele profesiei pentru care ne pregăteam și le datorăm tuturor recunoștință pentru cunoștințele pe care ni le-au dat. Dar sunt profesori care, pe lângă aceste cunoștințe, ne-au arătat și modul în care trebuia să gândim în noua noastră profesie și care sunt căile pe care trebuia să le urmăm pentru a avea succese în viața noastră profesională, Această înțelegere nu ne era insuflată prin noțiunile predate la curs ci trebuia să le deslușim din personalitatea și activitatea acestor profesori. Iar, după absolvire, pe lângă aplicarea cunoștințelor pe care le acumulasem în timpul facultății, trebuia să găsim modalitățile în care să facem uz de această filosofie a meseriei, într-un viitor pe care nici noi, nici profesorii noștri, nu-l puteau defini.

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30-85 DIMENSIONAREA FILTRELOR RAPIDE DE NISIP UTILIZATE LA TRATAREA APEI

DIMENSSIONIG OF RAPID SAND FILTERS USED FOR WATER TREATMENT
In this paper is presented the functioning and the dimensioning procedure of rapid sand filters used in water treatment plants. The dimensioning calculus refers to filter basin, water inflow and draining systems.
Keywords: rapid sand filter, treated water, dimensioning
Cuvinte cheie: filtru rapid de nisip, apă tratată, dimensionare

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30-84 DETERMINAREA DOMENIULUI DE UTILIZARE PRIN CALCULUL DESCHIDERII LA VÂNT „aV” A STÂLPILOR DIN BETON PENTRU LEA 110 kV CONFORM NORMATIVELOR ȊN VIGOARE

DETERMINING FIELD USE BY OPENING THE CALCULATION
OF THE WIND „aV” A CONCRETE POLES FOR 110 kV LEA
ACCORDING TO THE NORMS IN FORCE
Aerial electric lines are designed to ensure safe transport and
distribution of electricity. Physical support is provided by the power lines poles.
Pillars supporting 110kV aerial lines are usually made using prestressed spun
concrete. Currently in Romania, prestressed concrete poles for high voltage
electric lines are no longer manufactured, but this type of poles are in service.
In case of intervention on a transmission line by modifying the original design
characteristics, it is important that pillars can be verified easily as area of use
for the evaluation of investment costs, to ensure in designed version the ability
to take over the loads satisfying toughness requirements and stability.
Keywords: power lines, electricity poles, area of use
Cuvinte cheie: linii electrice, stâlpi, domeniu de utilizare

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30-83 IMPLEMENTAREA PLANURILOR CALITĂȚII ÎN LUCRĂRILE DE CONSTRUCȚII. O PRIVIRE DINSPRE PRACTICA AUDITULUI CALITĂȚII ȘI A EXPERTIZEI

THE IMPLEMENTATION OF QUALITY PLANS IN
CONSTRUCTION. A LOOK FROM PRACTICE AUDIT
QUALITY AND EXPERTISE
This paper analyses similarities and differences between the two
methods of evaluation, audit quality and technical expertise. Then, based on
these findings and experience gained in the two fields, formulate conclusions
and proposals to prevent situations where litigation is reached. Prevention
consists in the application of quality plans and external audits in the field of
constructions, so that wastage of public money can be avoided.
Keywords: ISO 19011 – Quality audit, ISO 10005 – Guideline for quality
plans, OG 2/2000 – Technical expertise
Cuvinte cheie: ISO 19011 – Auditul calității, ISO 10005 – Ghid pentru
planurile calității, OG 2/2000 – expertiza tehnică

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30-82 METODE DE REDUCERE A DURATEI DE REALIZARE A UNEI CONSTRUCȚII PRIN OPTIMIZAREA PROGRAMĂRII ACTIVITĂȚILOR

METHODS FOR REDUCING THE CONSTRUCTION
ACHIEVING DURATION BY OPTIMIZING THE
CONSTRUCTION ACTIVITIES SCHEDULE
The company management can be considered a multidisciplinary
discipline. This results from the fact that, being a complex discipline, in order to
solve the problems of this area, specialists need both knowledge of the
mathematical, statistical, legal, psychological and social. In order for the
investing activities to be conducted under conditions of maximum efficiency, all
factors which contribute to its realization, must take responsibility for conducting
the activities on schedule. Delivering the construction on due term should be a
basic requirement in the good development of the investment program. During
the course of a project, there will always appear different problems to be
solved. Finding a solution and its implementation will require a longer or a
shorter period of time, depending on the solutions to be adopted and the
possibility of implementing the solution found.
Keywords: program of work, construction activity, workforce, work
productivity
Cuvinte cheie: programarea lucrărilor, activități de construcții, forță de
muncă, productivitatea muncii

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30-81 PROIECTAREA UNEI FABRICI DE PRODUSE LACTATE

DESIGNING A DAIRY PRODUCTS FACTORY
In this project will present its importance and benefits of milk and
milk manufacturing technology and cream. We chose this theme because the
dairy industry occupies a very important place in the food, milk is a staple food
in human nutrition. Milk is a food that contains mostly all substances are
needed to develop body.
Keywords: milk, cream, technology, benefits
Cuvinte cheie: lapte, smântână, tehnologie, beneficii

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30-80 PROIECTAREA UNEI LIVEZI DE PRUNI

DESIGNING A PLUM ORCHARD
This project is presenting the benefits of importance of plum
orchards and technology, founding of a plum orchard and the investment
necessary, steps to be followed and targets to be achieved.
Keywords: plum orchard, founding, technology, importance
Cuvinte cheie: livadă de pruni, finanțare, tehnologie, importanţă

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30-79 PROIECTAREA UNEI FABRICI DE SUC DE FRUCTE ȘI LEGUME

DESIGNING A FRUITS AND VEGETABLES JUICE FACTORY
The paper presents the importance of apples, carrots, beetroot and
benefits that they have on the human body and treatment for which diseases
are indicated to be used. It also shows the technology of obtaining fruit and
vegetable juice, with flow diagram indicating operations performed in order to
obtain the finished product.
And finally the conclusions drawn are stated.
Keywords: apple, carrot, beetroot, juice benefits, technology
presentation
Cuvinte cheie: mere, morcovi, sfecla roșie, beneficiile sucului,
prezentarea tehnologiei

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30-78 STUDIU PRIVIND CARACTERISTICILE DE REZISTENȚĂ LA COMPRESIUNE A CĂRĂMIZILOR, LA CLĂDIRI VECHI REALIZATE DIN ZIDĂRIE DE CĂRĂMIDĂ

STUDY ABOUT THE STRENGTH CHARACTERISTICS OF
BRICKS UNDER COMPRESSION, FOR OLD BUILDINGS
MADE OUT OF BRICK
The main role of the construction is to provide comfort and protection
to people at home, at work and in social and cultural institutions. The
occurrence of problems conected to damages of structural or non structural
elements leads to the discomfort of their occupants, and in some cases, their
remediation having also a psychological motivation besides the reinsurancing
the resistance and stability. The rehabilitation of old buildings made of brick, is
difficult because in many cases, norelated data about the materials has been
found, nor of the structure conformation,or about the adjustments during the life
of the building, or which severe external actions has it been subjected to.
Keywords: brick masonry, compression strenght, structure, structural
elements
Cuvinte cheie: zidărie de cărămidă, rezistență la compresiune,
structură, elemente structurale

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30-77 UN PROCEDEU DE VERIFICARE A COMPACTĂRII TERASAMENTELOR PRIN FOLOSIREA CILINDRULUI COMPACTOR VIBRATOR

EIN VERFAHREN FÜR ÜBERPRÜFEN DER
BODENVERDICHTUNG DURCH DIE VERWENDUNG DER
VIBRATIONSWALZE
Die vorliegende Arbeit behandelt ein neues Meßprinzip der
Bodenverdichtung. Aus dem Bewegungsverhalten einer zur Verdichtung des
Bodens eingesetzten Vibrationswalze auf die Eigenschaften des Bodens
zurückzuschließen, erfüllt die Anforderungen des Meßverfahrens. Dieses
Verfahren der Verdichtungskontrolle bietet gegenüber der bisherigen
Prüftechnik den wesentlichen Vorteil, die Bodeneigenschaften arbeitsintegriert
flächendekend messen zu können. Es wird das Beteriebsverhalten der
Vibrationswalze analytisch beschrieben und man kann mit zwei Methoden die
Verdichtung ununterbrochen überprüfen.
Stichwörter: Verdichtungsgrad, Vibrationswalze, Bandage,
Verdichtungskontrolle, Bodenreaktionskraft
Cuvinte cheie: grad de compactare, cilindru compactor vibrator,
bandaj, controlul compactării, reacţia terenului

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30-76 TASARE FOARTE REDUSĂ A SOLULUI GRANULAR LA SĂPAREA CU TBM A METROULUI BUCUREȘTI

VERY LOW GROUND SETTLEMENT IN TBM TUNNELLING IN
GRANULAR SOIL AT THE BUCHAREST METRO LINE 4
The second stage of the Bucharest Metro extension started with the metro
tunnel excavation presented in this paper, the M4 line. Tunnels in soft ground
usually imply drilling through sub-surface un-lithified deposits, namely
cohesive/non-cohesive/mixed soils that involve soft ground tunneling conditions
where the tunnel is driven using a closed shield as temporary ground support. This
must be followed by immediate involvement of tunnel lining due to considerable
potential of ground movement during excavation, realized using a high
mechanization level of the process. The Bucharest soil grain size distribution and
the rest of the soil geotechnical parameters was the main factor to deal with. The
water table also played a major role in determining the TBM type used, presenting
further influences on the stability of the excavation face, with the option of
dewatering the drilling site soil enhancing the TBM circumstances.
The chosen EPB type of TBM handled the geological variations that
occurred at the excavation face (e.g. voids) due to the non-compressive medium
which fills the working chamber at the TBM front and responds instantly and
efficiently at the combined activity of hydraulic jacks thrust pressure; advance
speed; cutter head torque and revolution speed; mucking screw speed which were
controlled via a complex software and proper manning to set a constant value to the
drilling head and TBM shield to achieve the smoothest and fastest advance of the
boring machine. Using a soil conditioner that presented an up-graded formula
rendered to the excavated soil considerably improved parameters. Moreover, the
high degree of mechanization and automation of the excavation activity with TBM
has decreased the high level of soil settlement and excavation face failure risk,
resulting a very low ground settlement value for the project.
583
Keywords: tunnel, TBM (Tunnel Boring Machine), granular soil, settlement
Cuvinte cheie: tunel, TBM (mașina de frezat tuneluri), sol granular, tasare

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30-75 ANALIZA ECONOMICĂ A DIFERITELOR MODALITĂȚI DE FIXARE A TERMOSISTEMELOR

ECONOMIC ANALYSIS FOR DIFFERENT WAYS OF
FIXING OF THE EXTERNAL THERMAL INSULATION SYSTEM
Improved thermal protection for both structural and non-structural
exterior walls is achieved by applying an additional insulating layer to all the
constructive solutions used for walls. In order the thermal insulation obtained by
applying the system to satisfy all requirements it is essential how the system is
applied since the final result is influenced up to 40 % by the workmanship
quality. The works should be performed only by qualified personnel in this field,
by workers trained for the given purpose and who understood the usefulness of
such a system, but also the sensitivities of execution technology.
Keywords: thermal, thermal rehabilitation, mechanical fastening,
dowels
Cuvinte cheie: termosistem, reabilitare termică, fixare mecanică,
dibluri

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30-74 CASA PASIVĂ – FOLOSIREA CONJUGATĂ A MAI MULTOR INOVAȚII ÎN DOMENIUL CONSTRUCȚIILOR CIVILE

PASSIVE HOUSE – CONJUGATED USE OF MORE
INNOVATION IN CIVIL ENGINEERING FIELD
Current buildings are made with a high degree of comfort. Passive
house concept itself has various stages of implementation and improvement.
The desire of few consumes of thermal heating resources, decreasing heat loss
and resources is a serious problem for constructions developed by specialized
companies in the field. Innovation in construction is a separate issue and
requires a permanent improve both the knowledge and the means of
conjugated application of more discoveries in the field.
Keywords: ecological house, thermoregulation, electrical generation,
innovative solutions
Cuvinte cheie: casa ecologică, termoreglare, generare electrică, soluții
inovative

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30-73 REABILITAREA TERMICĂ A CLĂDIRILOR COLECTIVE DE LOCUIT – REALITĂȚI ȘI PERSPECTIVE

THERMAL REHABILITATION OF COLLECTIVE DWELLINGS –
PRESENT AND FUTURE DEVELOPMENTS
This paper makes an analysis over the thermal rehabilitation process
in Romania taking in consideration existing and future developments. Today’s
national financing programs do not offer a sustainable answer to the CO2
emission reduction goal due to the fact that this is a punctual solution and offer
small improvement for interior comfort of dwellings and energy savings.
Keywords: economic viability, cost standards, thermal insulation
Cuvinte cheie: viabilitate economică, standarde de cost, reabilitare
termică

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30-72 DEPRESURIZAREA ATRIUMULUI ÎN CAZ DE INCENDIU

DEPRESSURIZATION OF THE ATRIUM
IN CASE OF FIRE
A greater architectural freedom becomes possible when the atrium
façade should not be sealed, even if its upper part is filled with smoke if the
atrium or the adjacent spaces have a fire. The methods described in this article
refer to all categories of construction, in which the classical methods,
mentioned in specialized legislation, cannot be applied.
Keywords: fire, smoke, atrium, depressurization, vent
Cuvinte cheie: incendiu, fum, atrium, depresurizare, ventilare

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30-71 DEZVOLTAREA UNUI INCENDIU DE AUTOTURISM ÎN TUNEL

DEVELOPMENT OF A CAR FIRE ÎN A ROAD TUNNEL
The article presents the work of the authors concerning the burning
test in a semi closed space involving stationary car model. One scenario
considering a fire at one car caught in a road tunnel. Taking into consideration
fully developed fire, the temperature evolution, the time for temperature
increase and smoke spread and their meaning in case of a real event. The
results give us an image about user chances of escape from an event like this,
using both physical and numerical scalarization methods.
Keywords: road tunnel fire, car mode, smoke spread, scalarization
Cuvinte cheie: incendiu tunel rutier, model de mașină, răspândirea de
fum, scalarizare

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30-70 FENOMENUL DE COLMATARE LA PASAJ DE PEȘTI

THE FISH PASSAGE SILTING PHENOMENON
The paper presents the structure and the hydraulic behavior of a new
type of fish way. The SERB fish passage has four chambers and a cylindrical
shape inside. The chambers are limited by mobile walls with orifices pass for
aquatic organism migration. Results regarding the silt of the fish way are
presented.
Keywords: fish way, design, silting
Cuvinte cheie: scări de pești, proiectare, colmatare

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