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Uporaba naprednih oksidacijskih postopkov za razbarvanje odpadnih voda
Nejc Lebar, 2019, diplomsko delo

Opis: Industrija je največji porabnik vode in hkrati največji proizvajalec odpadnih vod. Odpadne vode iz industrije vsebujejo kompleksne snovi, ki jih v konvencionalnih čistilnih napravah ni mogoče odstraniti. Za potrebe odstranjevanja takšnih snovi se razvijajo naprednejši postopki čiščenja. V diplomski nalogi smo se osredotočili na čiščenje obarvanih odpadnih vod v tekstilni industriji. Za razbarvanje teh smo uporabili napredni oksidacijski postopek (AOP) H_2 O_2/UV. Izbrali smo tri barvila, ki se pogosto uporabljajo v tekstilni industriji, in sicer C. I. Acid Red 374, C. I. Reactive Black 5 in C. I. Direct Red 80. Proučili smo vpliv moči UV-sevanja na samo hitrost in učinkovitost razgradnje barvil ter spremljali spremembe parametrov onesnaženja.
Ključne besede: napredni oksidacijski postopek, vodikov peroksid, razbarvanje, C. I. Acid Red 374, C. I. Reactive Black 5, C. I. Direct Red 80
Objavljeno: 06.05.2019; Ogledov: 355; Prenosov: 50
.pdf Celotno besedilo (2,41 MB)

Influence of geosynthetic reinforcement on the shear strength characteristics of two-layer sub-grade
Mehrad Kamalzare, Reza Ziaie-Moayed, 2011, izvirni znanstveni članek

Opis: Due to the low bearing capacity of soft clayey soils in places that because of economic, military or geological conditions we are oblige to build a structure on, geosynthetics will be used to reinforce the soil and improve its bearing capacity. Particularly, A good example is roadways, where geosynthetics are placed between the interface of the granular materials and the soft-soil sub-grade to improve the bearing capacity of the composite layers. In previous research the behavior of one-layer soils that were reinforced with different kinds of geosynthetics were studied by experimental and analytical methods and some numerical models have been developed. In this paper the behavior of two-layer soils (granular base and clayey sub-grade) that were reinforced with some geosynthetics are investigated. Large-scale direct shear tests were performed on unreinforced and reinforced samples with different geosynthetics. The results show that depending on the characteristics of the geosynthetics, the inclusion of these materials may increase or decrease the shear strength parameters of the interface of two-layered soils. It implies that the geosynthetic-reinforced soils in the sub-base layer of roads are so sensitive to the characteristics of geosynthetics and will perform better than non-reinforced soils and consequently the load-carrying capacity of the basement will improve only if the appropriate geosynthetics are used. However, geogrid shows more reinforcement efficiency under higher vertical stresses. Increasing the relative density of the clayey sub-grade would also cause the geogrid reinforcement to be more effective.
Ključne besede: shear strength, geosynthetic, large scale direct shear test, soft clay, subgrade
Objavljeno: 13.06.2018; Ogledov: 391; Prenosov: 42
.pdf Celotno besedilo (1,52 MB)
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Interoperability between architectural and structural bim software in the case of a mall project
Drilon Rraci, 2017, magistrsko delo

Opis: This master thesis deals with the effect of interoperability between architectural and structural BIM software in the case of a Mall project. The research and most of the work was performed on a BIM model of the Mall project that was modeled using Tekla BIM software. Since there is still a lack of investigations addressing interoperability issues in the structural engineering domain, this thesis pretends to show the collaboration between architectural and structural BIM software, taking into account a real and complex project. A general overview and research regarding building information modeling (BIM) and interoperability issues were done in this project. Various case studies were conducted, where the entire BIM model and partial models of the Mall project were transferred from BIM to FEM software using different data exchange methods. Structural analysis and design in the case of the relevant partial models of the Mall project were performed with the help of Dlubal-Structural Engineering Software for Analysis and Design. Such analyses were made in the structural analysis program RFEM, to investigate if those partial models are imported correctly. The general conclusion based on the used case studies is that data exchange between BIM and FEM software can be useful, but the ease of use depends on both the data exchange method and the way how the relevant model has been created in Tekla BIM software. Referring to these case studies, the most successful data exchange was achieved by using the direct link between BIM and FEM software.
Ključne besede: Building Information Modeling (BIM), Interoperability, Data, Direct link, IFC, DSTV (*.stp), Tekla, RFEM, Modeling, A&D, Mall Project.
Objavljeno: 15.12.2017; Ogledov: 1876; Prenosov: 161
.pdf Celotno besedilo (20,15 MB)

Foreign direct investment location choice factors
Romana Korez-Vide, Patrick Voller, Vito Bobek, 2014, izvirni znanstveni članek

Opis: Due to the liberalization and transformation of emerging markets economies, the attractiveness of these countries for foreign direct investors has been rising in the last decades. This paper explores foreign direct investment (FDI) location choice factors of German and Austrian companies in Brazilian regions. We perform a quantitative analysis, based on the Multinomial Nested Logit Model and supplement its findings by the qualitative analysis, based on the semi-structured experts´ interview. The analyses show that investor-nation specific agglomeration, industry specialization, workforce qualification and physical infrastructure were important FDI location choice factors for German and Austrian companies in Brazil. Suggestions for future research of the FDI location choice factors are discussed.
Ključne besede: foreign direct investment, location choice factors, emerging markets, agglomerations, Multinomial Nested Logit Model
Objavljeno: 07.08.2017; Ogledov: 19289; Prenosov: 78
.pdf Celotno besedilo (352,11 KB)
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Kako natančna je lahko transkripcija
Mira Krajnc Ivič, 2010, izvirni znanstveni članek

Opis: The article attempts to show how a message of a direct dialogue gets its (illocutionary) force as the result of the interplay of linguistic, semi-linguistic and non-linguistic activities of the participant. It is also trying to show that researchers' difficulties are the consequences of his other wish to transcribe a dialog ue perfectly, because only a perfect and theoretically non-neutral transcription can be used for several different purposes.
Ključne besede: Slovene language, discourse, conversation, direct dialogue, transcription, prosody
Objavljeno: 29.05.2017; Ogledov: 591; Prenosov: 285
.pdf Celotno besedilo (595,92 KB)
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Maximum independent sets in direct products of cycles or trees with arbitrary graphs
Tjaša Paj, Simon Špacapan, 2015, izvirni znanstveni članek

Opis: The direct product of graphs ▫$G = (V(G),E(G))$▫ and ▫$H = (V(H),E(H))$▫ is the graph, denoted as ▫$G \times H$▫, with vertex set ▫$V(G \times H) = V(G )\times V(H)$▫, where vertices ▫$(x_1,y_1)$▫ and ▫$(x_2,y_2)$▫ are adjacent in ▫$G \times H$▫ if ▫$x_1x_2 \in E(G)$▫ and ▫$y_1y_2 \in E(H)$▫. Let ▫$n$▫ be odd and ▫$m$▫ even. We prove that every maximum independent set in ▫$P_n \times G$▫, respectively ▫$C_m \times G$▫, is of the form ▫$(A \times C) \cup (B \times D)$▫, where ▫$C$▫ and ▫$D$▫ are nonadjacent in ▫$G$▫, and ▫$A \cup B$▫ is the bipartition of ▫$P_n$▫ respectively ▫$C_m$▫. We also give a characterization of maximum independent subsets of ▫$P_n \times G$▫ for every even ▫$n$▫ and discuss the structure of maximum independent sets in ▫$T \times G$▫ where ▫$T$▫ is a tree.
Ključne besede: direct product, independent set
Objavljeno: 07.04.2017; Ogledov: 788; Prenosov: 334
.pdf Celotno besedilo (173,48 KB)
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On acyclic colorings of direct products
Simon Špacapan, Aleksandra Tepeh, 2008, izvirni znanstveni članek

Opis: A coloring of a graph ▫$G$▫ is an acyclic coloring if the union of any two color classes induces a forest. It is proved that the acyclic chromatic number of direct product of two trees ▫$T_1$▫ and ▫$T_2$▫ equals ▫$\min\{ \Delta(T_1) + 1, \Delta(T_2) + 1\}$▫. We also prove that the acyclic chromatic number of direct product of two complete graphs ▫$K_m$▫ and ▫$K_n$▫ is ▫$mn-m-2$▫, where ▫$m \ge n \ge 4$▫. Several bounds for the acyclic chromatic number of direct products are given and in connection to this some questions are raised.
Ključne besede: mathematics, graph theory, coloring, acyclic coloring, distance-two coloring, direct product
Objavljeno: 31.03.2017; Ogledov: 360; Prenosov: 61
.pdf Celotno besedilo (142,13 KB)
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Median and quasi-median direct products of graphs
Boštjan Brešar, Pranava Jha, Sandi Klavžar, Blaž Zmazek, 2005, izvirni znanstveni članek

Opis: Median graphs are characterized among direct products of graphs on at least three vertices. Beside some trivial cases, it is shown that one component of ▫$G \times P_3$▫ is median if and only if ▫$G$▫ is a tree in that the distance between any two vertices of degree at least 3 is even. In addition, some partial results considering median graphs of the form ▫$G \times K_2$▫ are proved, and it is shown that the only nonbipartite quasi-median direct product is ▫$K_3 \times K_3$▫.
Ključne besede: mathematics, graph theory, median graph, direct product, quasi-median graph, isometric embeddings, convexity
Objavljeno: 31.03.2017; Ogledov: 541; Prenosov: 239
.pdf Celotno besedilo (174,14 KB)
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Pomen stroškov v MSP
Jolanda Hentak-Majcen, 2016, diplomsko delo

Opis: Živimo v dobi podjetništva in vedno večje konkurence na trgu. Namen diplomskega dela je predstaviti pomen stroškov v malih in srednje velikih podjetjih (MSP), ne glede na to ali se ukvarjajo s proizvodnjo ali s storitveno dejavnostjo. Diplomska naloga v teoretičnem delu predstavlja vrste in obračun stroškov ter razčlenitev in postopek izračuna stroškovnih mest. Narejena je analiza primerjave ciljev med polnim izračunom stroškov in direct costing (D.C.) metodo. V praktičnem delu naloge je izveden sistem izračuna stroškov in podan primer analize stroškov pri funkciji prezračevanja s poudarkom na izračunu stroška obratovanja.
Ključne besede: stroški, stroškovno mesto, kalkulacija, analiza stroškov, direct costing
Objavljeno: 11.10.2016; Ogledov: 679; Prenosov: 106
.pdf Celotno besedilo (1,12 MB)

A characterization of the edge connectivity of direct products of graphs
Simon Špacapan, 2013, izvirni znanstveni članek

Opis: V članku dokažemo formulo za povezanost po povezavah direktnega produkta grafov. V formuli se povezanost po povezavah produkta izraža kot funkcija povezanosti po povezavah, najmanjše stopnje, števila povezav in dvodelne frustracije obeh faktorjev. Prav tako v članku opišemo strukturo najmanjših presečnih množic v direktnih produktih grafov.
Ključne besede: matematika, teorija grafov, direktni produkt, povezanost po povezavah, mathematics, graph theory, direct product, edge connectivity
Objavljeno: 10.07.2015; Ogledov: 566; Prenosov: 80
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