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1.
Modelling of transport phenomena by the diffuse approximate method
Janez Perko, 2005, doktorska disertacija

Najdeno v: ključnih besedah
Ključne besede: difuzijska aproksimacijska metoda, brezmrežna metoda, transport v poroznem mediju, radioaktivni odpadki, optimizacija prostih parametrov, algoritmi
Objavljeno: 15.10.2013; Ogledov: 1501; Prenosov: 46
URL Polno besedilo (0,00 KB)
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2.
Local meshless method for multi-phase termo-fluid problems
Gregor Kosec, 2011, doktorska disertacija

Najdeno v: ključnih besedah
Povzetek najdenega: ...problemi, brezmrežne metode, kolokacija, multikvadriki, tok kapljevin, transport gibalne tekočine, taljenje, strjevanje, disertacije, ...
Ključne besede: večfizikalni problemi, brezmrežne metode, kolokacija, multikvadriki, tok kapljevin, transport gibalne tekočine, taljenje, strjevanje, disertacije
Objavljeno: 15.10.2013; Ogledov: 1290; Prenosov: 4
URL Polno besedilo (0,00 KB)
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3.
Borze prevozov in tovorov na internetu
Damjana Dolanc, 2011, diplomsko delo

Najdeno v: ključnih besedah
Povzetek najdenega: ...diplomske naloge, logistika, transport, borze prevozov, borze tovorov, spletne aplikacije, ...
Ključne besede: diplomske naloge, logistika, transport, borze prevozov, borze tovorov, spletne aplikacije
Objavljeno: 15.10.2013; Ogledov: 1636; Prenosov: 92
URL Polno besedilo (0,00 KB)
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4.
Zunanja oskrba notranjega transporta Iskra Avtoelektrika
Matej Frančeškin, 2011, diplomsko delo

Najdeno v: ključnih besedah
Povzetek najdenega: ...diplomske naloge, podjetja, zunanja oskrba, operativni lizing, transport, ekonomska ocena, ...
Ključne besede: diplomske naloge, podjetja, zunanja oskrba, operativni lizing, transport, ekonomska ocena
Objavljeno: 15.10.2013; Ogledov: 1147; Prenosov: 81
URL Polno besedilo (0,00 KB)
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5.
Gospodarjenje z opažnim materialom v gradbenem podjetju
Igor Medvešček, 2005, diplomsko delo

Opis: Diplomska naloga se začenja z opredelitvijo logistike in njenega pomena v podjetju. Tu so predstavljene ključne točke, s katerimi skuša logistika čim racionalnejše reševati probleme v premagovanju prostora in časa. Nadaljuje se s predstavitvijo gradbenega podjetja, njegovega informacijskega sistema in opažnega materiala, ki ga podjetje uporablja pri gradnji. Sledi analiza logističnega poslovanja z opažnim materialom od njegovega naročila, prejema, skladiščenja, izdajanja, transporta in ponovno vračanja nazaj v skladišče. V zadnjem delu so predstavljene ugotovitve in predlagane rešitve nastalih problemov.
Najdeno v: ključnih besedah
Povzetek najdenega: ...podjetje, informacijski sistem, opažni material, skladišče, nabava, transport, ...
Ključne besede: diplomske naloge, logistika, gradbeno podjetje, informacijski sistem, opažni material, skladišče, nabava, transport
Objavljeno: 15.10.2013; Ogledov: 1699; Prenosov: 502
URL Polno besedilo (0,00 KB)
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6.
Electronic transport properties of graphene and graphene-related materials
Srinivasa Rao Pathipati, 2014, doktorska disertacija

Najdeno v: ključnih besedah
Ključne besede: grafen, reduciran grafenov oksid, transport naboja, čas preleta, organski tranzistor, adsorbati, dopiranje, zmesi, perileni, politiofeni, grafenski nanotrakovi, disertacije
Objavljeno: 22.01.2015; Ogledov: 1059; Prenosov: 17
URL Polno besedilo (0,00 KB)
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7.
The impact of gravel extraction on hyporheic ecology: a case study of the Bača river (W Slovenia)
Nataša Mori, 2008, doktorska disertacija

Najdeno v: ključnih besedah
Povzetek najdenega: ...matter, POM, fine sediment, ETS activity, electron transport system, sediments, Nematoda, Harpacticoida, Chironomidae, gravel extraction,...
Ključne besede: hyporheic invertebrate, Soča river, Bača river, hyporheic biota, benthic organisms, particulate organic matter, POM, fine sediment, ETS activity, electron transport system, sediments, Nematoda, Harpacticoida, Chironomidae, gravel extraction, environmental impact assessment
Objavljeno: 19.02.2015; Ogledov: 1228; Prenosov: 47
.pdf Polno besedilo (1,14 MB)
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8.
Transport električnega naboja v organskih polprevodnikih, simulacija po metodi Monte Carlo
Robert Hudej, Gvido Bratina, Egon Pavlica, 2003, izvirni znanstveni članek

Opis: The electric-charge transport in organic semiconductors is essentially different to the transport in ordered inorganic crystals. The reason is in thelocalization of the energy states, which act as charge-carrier transport channels between molecules. Consequently, the determination of the basic transport parameters in organic materials is inherently more involved than in their inorganic counterparts. The analytical methods that are used to describe charge transport in inorganic materials are unsuitable, since they are based on the extended electronic energy structure. We report here on the simulation of charge transport in organic semiconductor thin films. The simulation is based on the Monte Carlo method and describes the charge-carrier transport within the framework of carrier hopping between the sites. We employed a Gaussian energy distribution of the hopping sites with disorder elements. The degree of disorder is characterized by the width of the Gaussian distribution and is measured in eV units. The results of the transport simulation in 3,4,9,10-perylenedianhydride tetracarboxylic acid (PTCDA) show that the photogenerated charge-carrier current depends on the film thickness, temperature and disorder degree. The simulated photocurrents have the same amplitude in thick films as in the thin films, but the overall shape of the I(t) curve is more dispersive in thin films. The charge-carrier mobility decreases with the increasing degree of disorder at a given temperature. The simulation of the photogenerated positive charge carriers current matches with the time-of-flight experiment in a glass/ITO/PTCDA(600 nm)/In heterostructure at room temperature and an applied bias voltage of 8 V.
Najdeno v: ključnih besedah
Ključne besede: neurejeni kristali, metoda Monte Carlo, organski polprevodniki, transport naboja, PTCDA, tranzientne meritve
Objavljeno: 10.07.2015; Ogledov: 1256; Prenosov: 0
URL Polno besedilo (0,00 KB)

9.
The role of local potential minima on charge transport in thin organic semiconductor layers
Egon Pavlica, Raveendra Babu Penumala, Bratina Gvido, 2016, izvirni znanstveni članek

Opis: We have performed a systematic study of dependence of time-resolved photocurrent on the point of charge excitation within the organic semiconductor channel formed by two coplanar metal electrodes. The results confirm that spatial variation of electric field between the electrodes crucially determines transport of photogenerated charge carriers through the organic layer. Time-of-flight measurements of photocurrent demonstrate that the transit time of photogenerated charge carrier packets drifting between the two electrodes decreases with increasing travelling distance. Such counterintuitive result cannot be reconciled with the spatial distribution of electric field between coplanar electrodes, alone. It is also in contrast to expected role of space-charge screening of external electric field. Supported by Monte Carlo simulations of hopping transport in disordered organic semiconductor layer, we submit that the space-charge screens the external electric field and captures slower charge carriers from the photogenerated charge carrier packet. The remaining faster carriers, exhibit velocity distribution with significantly higher mean value and shorter transit time.
Najdeno v: ključnih besedah
Ključne besede: Charge transport, Organic semiconductors, Time of flight, Mobility, Traps
Objavljeno: 23.12.2016; Ogledov: 903; Prenosov: 0
.pdf Polno besedilo (950,46 KB)

10.
Role of transport band edge variation on delocalized charge transport in high-mobility crystalline organic semiconductors
Gvido Bratina, Andrey Kadashchuk, Egon Pavlica, Fei Tong, 2017, izvirni znanstveni članek

Opis: We demonstrate that the degree of charge delocalization has a strong impact on polarization energy and thereby on the position of the transport band edge in organic semiconductors. This gives rise to long-range potential fluctuations, which govern the electronic transport through delocalized states in organic crystalline layers. This concept is employed to formulate an analytic model that explains a negative field dependence coupled with a positive temperature dependence of the charge mobility observed by a lateral time-of-flight technique in a high-mobility crystalline organic layer. This has important implications for the further understanding of the charge transport via delocalized states in organic semiconductors.
Najdeno v: ključnih besedah
Ključne besede: organic semiconducotrs, time of flight, transport
Objavljeno: 13.09.2017; Ogledov: 74; Prenosov: 0
.pdf Polno besedilo (374,71 KB)

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