Search

Your search keyword '"Lukić Jelena M."' showing total 12 results
Start Over Author "Lukić Jelena M."
12 results on '"Lukić Jelena M."'

1. Employer branding for recruitment and retention of talented employees belonging to the new generation of millennials

Author

Lukić Jelena M., Brkljač Milan N., and Perčić Karolina R.

Subjects
talents, employer, human resources, millennials, brand, Marketing. Distribution of products, HF5410-5417.5
Abstract

Employers are increasingly faced with the need to identify, attract, hire and retain the best talent from the labor market in order to survive in the condition of fierce competition. As talents are in a position to choose an employer, successful companies seek to position themselves as ideal and desirable employers through the establishment of a strong employer brand. In the process of brand establishing, by applying the knowledge from the field of marketing and human resources, employers tend to position themselves to labor market candidates as unique and desirable with ideal working conditions, while at the same time trying to increase the level of satisfaction and dedication of existing employees. A modern approach to the process of branding an employer implies taking into account the needs and desires of different generation of employees. A generation that takes an important position in society and labor market - millennium generation (also known as the generation Y) has specific needs, demands and desires when it comes to selecting an employer. In this paper are point out the key specifics of establishing employer brand in order to position it as an ideal place for talents that belong to the generation of millennials.

Published
2019

2. Defining city brand personality: How can literature help?

Author

Dejanović Aleksandar M., Ljubojević Čedomir, and Lukić Jelena M.

Subjects
city brand, city brand personality, city brand personality dimensions, Marketing. Distribution of products, HF5410-5417.5
Abstract

City branding has a strategic dimension. When it comes to defining city branding strategy, creating city brand personality, that is, defining a set of human characteristics that are connected to city brand, is particularly important. In this way, a city can increase its recognisability and differentiate itself from the competition on location market. The main aim of this work is to show the experience of defining city brand personality within the project 'Vranje as a brand'. In the first part of the research, we used quantitative techniques (residents and visitors of Vranje were surveyed), while in the second part qualitative techniques were applied (focus group). On this occasion, the results of the research were complemented with the personality elements, that were taken from the literary works of the famous Serbian writer Borisav Stanković, who was born in Vranje and whose literature is connected with this city. That gave an additional element of authenticity to the brand personality. This is an example of how art can shape city personality, or discover the attributes which describe this personality.

Published
2018

3. Building and nurturing trust among members in virtual project teams

Author

Lukić Jelena M. and Vračar Milana M.

Subjects
organizational behavior, team-based structures, virtual project teams, trust, employees, information and communication technologies, Production management. Operations management, TS155-194, Personnel management. Employment management, HF5549-5549.5
Abstract

The Fourth Industrial Revolution has brought significant changes in the field of organizational design, especially in terms of how work is structured, organized, and conducted. One of the major trends widely adopted by numerous businesses worldwide is the establishment of virtual project teams, which allows members to work from remote locations regardless of their time zone, nation or culture and to collaborate using various information systems and technologies. Advantages of virtual project teams observed in terms of cost reduction, productivity growth, knowledge, skills, and flexibility are obvious and cannot be neglected. Nevertheless, challenges do often appear, and need to be addressed in order to create successful virtual organizations. The objective of this paper is to examine the role and importance of trust in virtual project teams, and to propose methods and activities that can help establish and nurture trust among employees in remote teams.

Published
2018

4. Raspodela vlage i degradacija izolacionog sistema energetskih transformatora sa mineralnim biljnim uljem

Author

Orlović, Aleksandar, Glišić, Sandra, Lukić, Ivana, Radaković, Zoran, Lukić, Jelena M., Vasović, Valentina Z., Orlović, Aleksandar, Glišić, Sandra, Lukić, Ivana, Radaković, Zoran, Lukić, Jelena M., and Vasović, Valentina Z.

Abstract

Predmet istraţivanja ove doktorske disertacije je raspodela vlage i degradacija izolacionog sistema energetskih transformatora ĉiji su bakarni provodnici izolovani Kraft papirom i izolacionim uljem mineralnog, odnosno biljnog porekla. Izolacioni sistem uljem punjenih energetskih transformatora saĉinjen je od izolacionih ulja i ĉvrste izolacije na bazi celuloze. Najvaţniji deo izolacije predstavlja izolacioni papir oko bakarnih provodnika i smatra se da je transformator dostigao kraj svoj ţivotnog veka onda kada je papir degradirao u tolikoj meri da je izgubio mehaniĉku ĉvrstinu i sposobnost da podnese dalja elektriĉna, a posebno mehaniĉka naprezanja Kao jedna od mera degradacije papira, odnosno mera mehaniĉke ĉvrstoće, uzima se vrednost stepena polimerizacije papira (DP). Ovaj parametar se moţe odrediti tek nakon što transformator završi svoj radni vek, tako da je tokom pogona transformatora moguće vršiti samo indirektne procene stepena degradacije papirne izolacije. Jedan od naĉina za procenu stanja papirne izolacije jeste odreĊivanjem sadrţaja derivata furana u ulju koji nastaju prilikom degradacije papirne izolacije uz korišćenje odgovarajućih korelacionih jednaĉina. Korelacione jednaĉine koje su trenutno dostupne u literaturi ne uvaţavaju parametre koji utiĉu na rastvorljivost derivata furana iz papira u ulje kao što je prisustvo vlage i kiselina u izolacionom sistemu. Istraţivaĉki rad bio je organizovan u dva dela. Prvi deo istraţivanja obuhvatao je prouĉavanje fenomena raspodele vlage izmeĊu papirne izolacije i izolacionog ulja mineralnog i biljnog porekla. Formirani su ravnoteţni dijagrami raspodele vlage izmeĊu izolacionog Kraft papira, presborda i mineralnog, odnosno biljnog izolacionog ulja, za opseg temperatura 40 °C - 120 °C i sadrţaja vlage u izolaciji 0,5% – 5%. Potvrda mogućnosti primene formiranih dijagrama u odrţavanju realnih energetskih transformatora ostvarena je poreĊenjem rezultata procene sadrţaja vlage u celuloznoj izolaciji kod 23 realna ene, Scope of this phd research was investigation of moisture distribution and ageing phenomena of the insulation system of power transformers with kraft paper insulated copper conductors and filled with mineral or natural ester oil. The insulation system of oil-filled power transformers is composed of insulating oils and cellulose-based solid insulation. The most important part of the insulation is the insulating paper wrapped around copper conductors. Transformer is considered to have reached the end of its life when the paper have lost it‘s mechanical strength and ability to withstand further electrical and mechanical stresses due to degradation. A common way to express the condition of paper insulation in transformers, ie mechanical strength of paper, is the degree of polymerization (DP). This parameter can be determined only after the transformer has completed its service life. During the operation of the transformer it is only possible to make estimation of DP based on furan derivatives content in the oil, compounds produced during paper ageing, using appropriate correlation equations. The correlation equations currently available in the literature do not take into account parameters that affect the solubility of furan derivatives in oil, such as the presence of moisture and acids. Research was orriented in two areas. First area had covered investigation of moisture distribution phenomena between paper and oil, mineral and natural ester. Based on experimentally data moisture equilibrium charts for kraft paper and pressboard insulation and mineral and natural ester oil were developed, for temperature range 40 ° C – 120 ° C and moisture content in insulation 0.5% - 5%. A comparative analysis of estimated moisture contents in the cellulose insulation using measurements of water content in the oil and equilibrium curves, and moisture contents obtained by applying electrical frequency dependent spectroscopic method (FDS) are provided for 23 transformers in service. A go

Published
2021

5. The impact of big data technologies on organizational design of the company

Author

Lukić, Jelena M., Petković, Mirjana, Kaličanin, Đorđe, Stankić, Rade, and Nojković, Aleksandra

Subjects
Big Data, procesi, organizaciona struktura, processes, strategija, organizational design, information and communication technologies, employees, zaposleni, organizacioni dizajn, informaciono-komunikacione tehnologije, structure, strategy, Big Data tehnologije
Abstract

Sa razvojem tehnologija za rad sa velikim obimom podataka, za koje se u literaturi i praksi ustalio izraz Big Data, uticaj tehnologije na organizacioni dizajn je ponovo postao važno i aktuelno pitanje u teoriji i praksi menadžmenta i organizacije. Tehnologija je zauzela važno mesto u procesu dizajniranja organizacija počev od 1960- ih godina, pa do današnjih dana kada njen uticaj postaje sve intenzivniji. Predmet disertаcije je istrаživаnje uticаjа tehnologija za rad sa velikim obimom podataka (Big Data tehnologijа) nа orgаnizаcioni dizаjn preduzećа. Big Data tehnologije predstavljaju skup novih tehnologija, tehnika, alata, potrebnih znanja i veština za rad sa podacima koji imaju nove osobine (obim, strukturu, brzinu). Polаzeći od rаzumevаnjа orgаnizаcionog dizаjnа kаo skupа orgаnizаcionih dimenzijа koji čine orgаnizаcionа strukturа kаo njegovo jezgro, а zаtim i drugih dimenzijа orgаnizаcije koje su povezаne sа strukturom (strаtegijа, ljudi, procesi), cilj disertacije jeste da identifikuje način na koji Big Data tehnologije utiču na organizacioni dizajn preduzeća. Rezultati sprovedenog empirijskog istraživanja pokazuju da su Big Data tehnologije prodrle u svaku delatnost, preduzeće, proces, odluku i aktivnost i da su dovele do promena u načinu na koji preduzeća funkcionišu kroz uticaj na dimenzije organizacionog dizajna i parametre organizacione strukture. Na jednoj strani, ove tehnologije predstavljaju determinantu okruženja i suočavaju preduzeća sa velikom količinom podataka iz novih izvora, dok sa druge strane predstavljaju resurs organizacije koji omogućava preduzećima koja ih primenjuju da sve te podatke iskoriste i na njihovoj osnovi izgrade konkurentsku prednost. With the development of Big Data technologies, the impact of technology on organizational design has become an important and attractive issue in the theory and practice of management and organization again. Technology has taken an important place in the process of designing an organization, starting from the 1960s until this day and age when its influence is becoming more prominent. The subject of the dissertation is to examine the impact of Big Data technologies on organizational design of the company. Big Data technology represents new technologies, techniques, tools, knowledge and skills which are necessary to work with data with new attributes (volume, variety, velocity). Starting from the understanding of organizational design as a set of organizational dimensions which consists of organizational structure as its core dimension, and other dimensions that are associated with structure (strategy, people, processes), the aim of the dissertation is to identify how Big Data technologies affect organizational design of the company. Results from conducted empirical research showed that Big Data technologies have penetrated in each industry, company, process, decision, activity and changed the way in which companies function through the impact on dimensions of organizational design and parameters of organizational structure. On the one hand, Big Data technologies represent a factor from environment that confronts the companies with large quantities of data from new sources, while on the other hand represent a resource of organization that enables companies that use them to build competitive advantage on the basis of collected data.

Published
2017

7. Brendiranje poslodavaca u funkciji privlačenja i zadržavanja talenata koji pripadaju generaciji milenijalaca.

Author

Lukić, Jelena M., Brkljač, Milan N., and Perčić, Karolina R.

Subjects
LABOR market, MILLENNIALS, HUMAN capital, MARKET positioning
Abstract

Copyright of Marketing (0354-3471) is the property of SEMA - Srpsko udruzenje za Marketing i Ekonomski fakultet Beograd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2019

8. Uticaj tehnologija za rad sa velikim obimom podataka na organizacioni dizajn preduzeća

Author

Petković, Mirjana, Kaličanin, Đorđe, Stankić, Rade, Nojković, Aleksandra, Lukić, Jelena M., Petković, Mirjana, Kaličanin, Đorđe, Stankić, Rade, Nojković, Aleksandra, and Lukić, Jelena M.

Abstract

Sa razvojem tehnologija za rad sa velikim obimom podataka, za koje se u literaturi i praksi ustalio izraz Big Data, uticaj tehnologije na organizacioni dizajn je ponovo postao važno i aktuelno pitanje u teoriji i praksi menadžmenta i organizacije. Tehnologija je zauzela važno mesto u procesu dizajniranja organizacija počev od 1960- ih godina, pa do današnjih dana kada njen uticaj postaje sve intenzivniji. Predmet disertаcije je istrаživаnje uticаjа tehnologija za rad sa velikim obimom podataka (Big Data tehnologijа) nа orgаnizаcioni dizаjn preduzećа. Big Data tehnologije predstavljaju skup novih tehnologija, tehnika, alata, potrebnih znanja i veština za rad sa podacima koji imaju nove osobine (obim, strukturu, brzinu). Polаzeći od rаzumevаnjа orgаnizаcionog dizаjnа kаo skupа orgаnizаcionih dimenzijа koji čine orgаnizаcionа strukturа kаo njegovo jezgro, а zаtim i drugih dimenzijа orgаnizаcije koje su povezаne sа strukturom (strаtegijа, ljudi, procesi), cilj disertacije jeste da identifikuje način na koji Big Data tehnologije utiču na organizacioni dizajn preduzeća. Rezultati sprovedenog empirijskog istraživanja pokazuju da su Big Data tehnologije prodrle u svaku delatnost, preduzeće, proces, odluku i aktivnost i da su dovele do promena u načinu na koji preduzeća funkcionišu kroz uticaj na dimenzije organizacionog dizajna i parametre organizacione strukture. Na jednoj strani, ove tehnologije predstavljaju determinantu okruženja i suočavaju preduzeća sa velikom količinom podataka iz novih izvora, dok sa druge strane predstavljaju resurs organizacije koji omogućava preduzećima koja ih primenjuju da sve te podatke iskoriste i na njihovoj osnovi izgrade konkurentsku prednost., With the development of Big Data technologies, the impact of technology on organizational design has become an important and attractive issue in the theory and practice of management and organization again. Technology has taken an important place in the process of designing an organization, starting from the 1960s until this day and age when its influence is becoming more prominent. The subject of the dissertation is to examine the impact of Big Data technologies on organizational design of the company. Big Data technology represents new technologies, techniques, tools, knowledge and skills which are necessary to work with data with new attributes (volume, variety, velocity). Starting from the understanding of organizational design as a set of organizational dimensions which consists of organizational structure as its core dimension, and other dimensions that are associated with structure (strategy, people, processes), the aim of the dissertation is to identify how Big Data technologies affect organizational design of the company. Results from conducted empirical research showed that Big Data technologies have penetrated in each industry, company, process, decision, activity and changed the way in which companies function through the impact on dimensions of organizational design and parameters of organizational structure. On the one hand, Big Data technologies represent a factor from environment that confronts the companies with large quantities of data from new sources, while on the other hand represent a resource of organization that enables companies that use them to build competitive advantage on the basis of collected data.

Published
2017

9. Removal of Sulfur Compounds from Mineral Insulating Oils by Extractive Refining with N-Methyl-2-pyrrolidone

Author

Lukić, Jelena M., Nikolić, Draginja, Mandić, Valentina, Glišić, Sandra, Antonović, Dušan, Orlović, Aleksandar, Lukić, Jelena M., Nikolić, Draginja, Mandić, Valentina, Glišić, Sandra, Antonović, Dušan, and Orlović, Aleksandar

Abstract

Copper sulfide deposits in the insulation systems of power transformers decrease the dielectric properties of the insulation and therefore constitute a significant risk for the operation of power transformers. Disulfides, oxidized sulfur compounds, thiols, and elemental sulfur, which could be present in insulating oil, have been recognized as the sources of reactive sulfur responsible for copper sulfide formation. Selective liquid liquid extraction using N-methyl-2-pyrrolidone solvent was investigated for the purification of mineral insulating oils through the removal of compounds and precursors responsible for copper sulfide formation. The efficiency of the extraction process was evaluated using corrosive sulfur test IEC 62535, SEM/EDX measurements of paper before and after the IEC 62535 test, and measurements of the dibenzyl disulfide concentration in the oil using GC-ECD method. The oxidation stability of refined oils was evaluated using the IEC 61125 method. Precursors of copper sulfide deposits were completely removed from different mineral oils as a result of purification by extraction with N-methyl-2-pyrrolidone and 1.0 wt % water as a cosolvent.

Published
2012

10. Degradation of the Insulating System of Power Transformers by Copper Sulfide Deposition: Influence of Oil Oxidation and Presence of Metal Passivator

Author

Lukić, Jelena M., Milosavljević, Srdjan B., Orlović, Aleksandar, Lukić, Jelena M., Milosavljević, Srdjan B., and Orlović, Aleksandar

Abstract

Deposition of conductive copper sulfide on paper insulation of power transformers was recognized as a serious risk that can result in equipment failure. The aim of this study was to investigate the influence of mineral insulating oil oxidation and the presence of metal passivator on copper sulfide (Cu2S) deposition. Oil oxidation was found to increase deposition of Cu2S on the insulating paper, as confirmed by IEC 61125 B and IEC 62535 tests. The presence of oxygen resulted in an increase of copper dissolution in the oil and facilitated progressive copper sulfide deposition on the insulating paper, as confirmed by ICP, AAS, and EDX measurements. The effectiveness of aminomethyl substituted toluylbenzotriazole (TEA) metal passivator in suppressing copper sulfide formation and deposition was studied using modified IEC 62535 test. The protective role of TTA bonded to the copper plate surface and absorbed in the insulating paper was observed in tests at 140 and 150 degrees C, even for highly oxidized oils.

Published
2010

12. Raspodela vlage i degradacija izolacionog sistema energetskih transformatora sa mineralnim biljnim uljem

Author

Vasović, Valentina Z., Orlović, Aleksandar, Glišić, Sandra, Lukić, Ivana, Radaković, Zoran, and Lukić, Jelena M.

Abstract

Predmet istraţivanja ove doktorske disertacije je raspodela vlage i degradacija izolacionog sistema energetskih transformatora ĉiji su bakarni provodnici izolovani Kraft papirom i izolacionim uljem mineralnog, odnosno biljnog porekla. Izolacioni sistem uljem punjenih energetskih transformatora saĉinjen je od izolacionih ulja i ĉvrste izolacije na bazi celuloze. Najvaţniji deo izolacije predstavlja izolacioni papir oko bakarnih provodnika i smatra se da je transformator dostigao kraj svoj ţivotnog veka onda kada je papir degradirao u tolikoj meri da je izgubio mehaniĉku ĉvrstinu i sposobnost da podnese dalja elektriĉna, a posebno mehaniĉka naprezanja Kao jedna od mera degradacije papira, odnosno mera mehaniĉke ĉvrstoće, uzima se vrednost stepena polimerizacije papira (DP). Ovaj parametar se moţe odrediti tek nakon što transformator završi svoj radni vek, tako da je tokom pogona transformatora moguće vršiti samo indirektne procene stepena degradacije papirne izolacije. Jedan od naĉina za procenu stanja papirne izolacije jeste odreĊivanjem sadrţaja derivata furana u ulju koji nastaju prilikom degradacije papirne izolacije uz korišćenje odgovarajućih korelacionih jednaĉina. Korelacione jednaĉine koje su trenutno dostupne u literaturi ne uvaţavaju parametre koji utiĉu na rastvorljivost derivata furana iz papira u ulje kao što je prisustvo vlage i kiselina u izolacionom sistemu. Istraţivaĉki rad bio je organizovan u dva dela. Prvi deo istraţivanja obuhvatao je prouĉavanje fenomena raspodele vlage izmeĊu papirne izolacije i izolacionog ulja mineralnog i biljnog porekla. Formirani su ravnoteţni dijagrami raspodele vlage izmeĊu izolacionog Kraft papira, presborda i mineralnog, odnosno biljnog izolacionog ulja, za opseg temperatura 40 °C - 120 °C i sadrţaja vlage u izolaciji 0,5% – 5%. Potvrda mogućnosti primene formiranih dijagrama u odrţavanju realnih energetskih transformatora ostvarena je poreĊenjem rezultata procene sadrţaja vlage u celuloznoj izolaciji kod 23 realna energetska transformatora dobijenih na dva naĉina: primenom elektriĉne metode FDS i primenom predmetnih dijagrama uz korišćenje izmerenih sadrţaja vode u ulju i radne temperature ulja. U okviru istraţivanja fenomena raspodele vlage utvrĊeno je da u sluĉaju biljnih izolacionih ulja postoji nejednaka raspodela vlage izmeĊu papira i presborda, naroĉito na umerenim temperaturama i za niţe sadrţaje vlage, što moţe biti veoma korisno prilikom procene ovlaţenosti izolacionog sistema realnih energetskih transformatora punjenih uljem biljnog porekla... Scope of this phd research was investigation of moisture distribution and ageing phenomena of the insulation system of power transformers with kraft paper insulated copper conductors and filled with mineral or natural ester oil. The insulation system of oil-filled power transformers is composed of insulating oils and cellulose-based solid insulation. The most important part of the insulation is the insulating paper wrapped around copper conductors. Transformer is considered to have reached the end of its life when the paper have lost it‘s mechanical strength and ability to withstand further electrical and mechanical stresses due to degradation. A common way to express the condition of paper insulation in transformers, ie mechanical strength of paper, is the degree of polymerization (DP). This parameter can be determined only after the transformer has completed its service life. During the operation of the transformer it is only possible to make estimation of DP based on furan derivatives content in the oil, compounds produced during paper ageing, using appropriate correlation equations. The correlation equations currently available in the literature do not take into account parameters that affect the solubility of furan derivatives in oil, such as the presence of moisture and acids. Research was orriented in two areas. First area had covered investigation of moisture distribution phenomena between paper and oil, mineral and natural ester. Based on experimentally data moisture equilibrium charts for kraft paper and pressboard insulation and mineral and natural ester oil were developed, for temperature range 40 ° C – 120 ° C and moisture content in insulation 0.5% - 5%. A comparative analysis of estimated moisture contents in the cellulose insulation using measurements of water content in the oil and equilibrium curves, and moisture contents obtained by applying electrical frequency dependent spectroscopic method (FDS) are provided for 23 transformers in service. A good agreement of these results confirmed applicability of these charts for assesing the water content in solid insulation of power transformers in service. Due to the higher solubility of moisture in natural ester compared to in mineral oil, water equilibrium in a system of natural ester oil, paper and pressboard was moved to the oil. In the system of naural ester oil uneven distribution of water between paper and pressboard was also observed, especially for moderate initial water contents and moderate temperatures. This fact could be very useful in assessing the moisture content in paper in power transformers filled with natural ester oil...

Published
2021

Catalog

Books, media, physical & digital resources
See catalog results