A comprehensive diagram to grow metal-polarity InGaN alloys by molecular beam epitaxy

he composition, strain and surface morphology of (0001)InGaN layers are investigated as a function of growth temperature (460–645 °C) and impinging In flux. Three different growth regimes: nitrogen-rich, metal-rich and intermediate metal-rich, are clearly identified and found to be in correlation with surface morphology and strain relaxation. Best epilayers’ quality is obtained when growing under intermediate metal-rich conditions, with 1–2 monolayers thick In ad-coverage. For a given In flux, the In incorporation decreases with increasing growth temperature due to InN thermal decomposition that follows an Arrhenius behavior with 1.84±0.12 eV activation energy

Electron Tomography of Pencil-Shaped GaN/(In,Ga)N Core-Shell Nanowires

The three-dimensional structure of GaN/(In,Ga)N core-shell nanowires with multi-faceted pencil-shaped apex is analyzed by electron tomography using high-angle annular dark-field mode in a scanning transmission electron microscope. Selective area growth on GaN-on-sapphire templates using a patterned mask is performed by molecular beam epitaxy to obtain ordered arrays of uniform nanowires. Our results of the tomographic reconstruction allow the detailed determination of the complex morphology of the inner (In,Ga)N multi-faceted shell structure and its deviation from the perfect hexagonal symmetry. The tomogram unambiguously identifies a dot-in-a-wire configuration at the nanowire apex including the exact shape and size, as well as the spatial distribution of its chemical composition. © 2019, The Author(s)

KORELACIJA PROBLEMATIČNIH KREDITA I PROFITABILNOSTI BANKARSKIH SEKTORA ZEMALJA ZAPADNOG BALKANA

Bankarski sektor zemalja zapadnog Balkana je veoma specifičan i razlikuje se u velikoj meri od ostalih bankarskih sektora zemalja centralne i istočne Evrope. Sprovedeno je istraživanje u bankarskim sektorima kod pet zemalja zapadnog Balkana,među kojima su: Srbija, BiH, Crna Gora, Albanija i Severna Makedonija u vremenskom periodu od 2013 do 2019 godine. Predmet analize su problematični krediti (NPLs) sa jedne strane i nivo profitabilnosti meren putem pokazatelja prinosa na aktivu (ROA) i prinosa na kapital (ROE), sa druge strane. Nivo problematičnih kredita je došao do izražaja nastupanjem svetske finansijske krize koja je neminovno dovela do rasta problematičnih plasmana, kredita čija kašnjenja su preko 90 dana. Problematični krediti predstavljaju pokazatelj, koji nam govori koliko je menadžment banke uspešan u rukovođenju i stvaranju profita. Menadžment banke mora težiti njihovom poboljšanju kako bi banke mogle funkcionisati i opstati na finansijskom tržištu u tržišnim uslovima konkurencije. Na taj način, banke će biti u mogućnosti da ostvare pozitivne rezultate u svom poslovanju i tako kreiraju uslove za dugoročni rast i razvoj. Prvo će se sagledati, koliko su bankarski sektori uspešni u rešavanju problema koji se tiču nivoa problematičnih kredita u kriznim vremenima. Drugo, prikazaće se komparativna analiza nivoa profitabilnosti između posmatranih zemalja. Cilj rada je da se prikaže značaj problematičnih kredita i uticaj na profitabilnost banaka posmatranog regiona. Prilikom analize koristiće se Pearsonov koeficijent korelacije, gde će se utvrditi nivoi zavisnosti između posmatranih varijabli

OPERATIONAL RISK IN DIGITAL BUSINESS

U dosadašnjem toku funkcionisanja banaka najveće probleme u poslovanju su im predstavljali tržišni ili kreditni rizici ali dolaskom modernizacije i pojavom digitalizacije jedan rizik dolazi do sve češćeg pomena a to je operativni rizik. Predmet analize je operativni rizik pa možemo reći da se definicija operativnog rizika odnosi na mogućnost nastanka negativnih efekata na finansijski rezultat i kapital banke koji su posledica propusta u radu zaposlenih, neodgovarajućih internih procedura i procesa, neadekvatnog upravljanja informacionim i drugim sistemima, kao i usled nepredvidivih eksternih događaja. Bankama je uvek bilo važno da pokušaju da spreče prevare, održe integritet unutrašnjih kontrola, smanje greške u obavljanju transakcija. U tom smislu sve više organizacija dolazi do zaključka da programom upravljanja operativnim rizikom osigurava sigurnost i zdravlje banke, te stoga napreduju u bavljenju operativnim rizikom kao posebnom klasom rizika na sličan način na koji tretiraju ostale rizike. U radu će se pažnja posvetiti vrstama operativnog rizika i njihovom uticaju na digitalno poslovanje. Postoji nekoliko modela za merenja rizika a oni predstavljaju: interne i eksterne baze podataka o rizicima, samoocenjivanje, ključni indikatori rizika, scenario analiza i sistem interne kontrole. Cilj rada je da se daju preporuke za unapređenje upravljanja operativnim rizicima.In the current course of functioning of banks, the biggest problems in their operations were market or credit risks, but with the advent of modernization and the emergence of digitalization, one risk is being mentioned more and more often, and that is operational risk. The subject of the analysis is operational risk, so we can say that the definition of operational risk refers to the possibility of negative effects on the bank\u27s financial results and capital that are a consequence of employee failures, inadequate internal procedures and processes, inadequate management of information and other systems, as well as due to unpredictable external events. It has always been important for banks to try to prevent fraud, maintain the integrity of internal controls, and reduce transaction errors. In this sense, more and more organizations come to the conclusion that the operational risk management program ensures the safety and health of the bank, and therefore progress in dealing with operational risk as a special class of risk in a similar way as they treat other risks. The paper will focus on types of operational risk and their impact on digital business. There are several models for risk measurement and they represent: internal and external risk databases, self-assessment, key risk indicators, scenario analysis and internal control system. The aim of the paper is to give recommendations for the improvement of operational risk management

A comprehensive diagram to grow InAlN alloys by plasma-assisted molecular beam epitaxy

Indium incorporation and surface morphology of InAlN layers grown on (0001)GaN by plasma-assisted molecular beam epitaxy were investigated as a function of the impinging In flux and the substrate temperature in the 450–610 °C range. In incorporation was found to decrease with substrate temperature due to thermal decomposition of the growing layer, while for a given temperature it increased with the impinging In flux until stoichiometry was reached at the growth front. The InN losses during growth followed an Arrhenius behavior characterized by an activation energy of 2.0 eV. A growth diagram highly instrumental to identify optimum growth conditions was established

Šport, biopolitika in kritika politične ekonomije

In this text we tried to point out the relationship between labour and biopolitical mechanisms of power in the context of the current situation in elite sport. In the first part we present developments inside left-oriented theories of sport, especially the need for critical research based on specific aspects of criticism of political economy. We then review brief the current situation in contemporary sport, mainly about parallel evolution of the capitalist commodification of sport and the emergence of the application of biopolitically directed practices, where we have tried to implement a short overview of Foucault’s concepts in the field of sport studies. The third part deals with the connection between Paolo Virno’s biopolitical studies and Marx’s labour power. In conclusion, we raise the possibility of applying Virno’s settings to treat sport practice in the context of its appropriation by capitalism, characterised by the intensification of strategies and techniques for controlling sportsman life. According to Virno’s settings we have tried to show influence to a life of sportsman in the aim of bio-potency, the ability/power to produce a labour force, while this force is treated like labour exchanged in the market in the context of capitalist commodification of modern sport

The consolidation of material of the National and University library of Bosnia and Herzegovina funds on the cultural and historical heritage of Silvije Strahimir Kranjčević

Objedinjavanje građe u fondovima NUBBiH o kulturnohistorijskoj zaostavštini Silvija Strahimira Kranjčevića rezultat je realizacije projekta Nacionalne i univerzitetske biblioteke Bosne i Hercegovine (NUBBiH), finansiran od strane Ministarstva za obrazovanje, nauku i mlade Kantona Sarajevo. Predmet istraživanja bila je građa iz fondova Specijalnih zbirki, Stare periodike i novije literature, monografije i članci, koji se čuvaju u Redovnom fondu NUBBiH. Konačni rezultat istraživanja je bibliografija koja sadrži 394 jedinice. Po završetku projekta izdvojena je i skenirana sva popisana građa o Silviju Strahimiru Kranjčeviću i dostupna je u digitalnoj formi na odjeljenjima u kojima se nalazi.The Consolidation of Material in National and University Library of B&H (NULB&H) Funds on the Cultural and Historical Heritage of Silvije Strahimir Kranjčević is the result of the project realized by NULB&H, funded by the Ministry of Education, Science and Youth of the Sarajevo Canton. The subject of research was the material in Special Collections, Old Periodicals Collection, and more recent publications as monographs and articles also kept in the NULB&H funds. The final result of the research is a bibliography with 394 units. Upon completion of the project, all the listed documents about Silvije Strahimir Kranjčević were scanned and they are available in digital form in the departments where they are located

Infrared photoluminescence of high In-content InN/InGaN multiple-quantum-wells

We report on the thermal evolution of the photoluminescence (PL) from high In-content InN/In0.9Ga0.1N multiple-quantum wells (MQWs) synthesized by plasma-assisted molecular-beam epitaxy on GaN-on-sapphire templates. The structural quality and the well/barrier thickness uniformity in the MQW structure are assessed by X-ray diffraction and transmission electron microscopy measurements. PL results are compared with the luminescence from a 1-µm-thick InN reference sample. In both cases, the dominant low-temperature (5 K) PL emission peaks at ∼0.73 eV with a full width at half maximum of ∼86 meV. The InN layer displays an S-shape evolution of the emission peak energy with temperature, explained in terms of carrier localization. A carrier localization energy of ∼12 meV is estimated for the InN layer, in good agreement with the expected carrier concentration. In the case of the MQW structure, an enhancement of the carrier localization associated to the piezoelectric field results in an improved thermal stability of the PL intensity, reaching an internal quantum efficiency of ∼16%.Ministerio de Ciencia e InnovaciónComunidad de Madri

The consolidation of materials in the collections of the National and University library of Bosnia and Herzegovina and the National library of Austria on the cultural and historical heritage of Mehmed-bey Kapetanović Ljubušak

Objedinjavanje građe u fondovima Nacionalne i univerzitetske biblioteke Bosne i Hercegovine i Nacionalne biblioteke Austrije o kulturnohistorijskoj zaostavštini Mehmed-bega Kapetanovića Ljubušaka rezultat je realizacije projekta Nacionalne i univerzitetske biblioteke Bosne i Hercegovine (NUBBiH), koji je finansiralo Federalno ministarstvo obrazovanja i nauke. Predmet istraživanja bila je građa Specijalnih zbirki i Stare periodike NUBBiH i fondova Nacionalne biblioteke Austrije u Beču. U fondovima NUBBiH čuva se građa Mehmed-bega Kapetanovića Ljubušaka pogodna za kulturološka, historijska, lingvistička, književna i politička istraživanja. Kapetanović je radio i djelovao u vrijeme austrougarske uprave u BiH te je, stoga, istraživanje provedeno i u Austriji, u Beču, i na taj način je objedinjena i popisana građa iz ove dvije institucije. Ovaj popis sadrži 157 jedinica.The consolidation of materials in the collections of the National and University Library of Bosnia and Herzegovina and the National Library of Austria is the result of the realization of the project of the National and University Library of Bosnia and Herzegovina (NULB&H) on the cultural and historical heritage of Mehmed-bey Kapetanović Ljubušak, funded by the Federal Ministry of Education and Science. The topic of the research were documents of the Special Collections and Old Periodicals of NULB&H and the collections of the National Library of Austria in Vienna. The documents about Mehmed-bey Kapetanovic Ljubušak in collections of NULB&H, are convenient for cultural, historical, linguistic, literary and political research. Kapetanović worked in the time of the Austro-Hungarian administration in B&H. That is why the research was also carried out in Austria, Vienna, and at the end, the materials from these two institutions were consolidated in a list that contains 157 units