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1.
Izboljšava vhodnega materialnega toka v podjetju x : diplomsko delo visokošolskega strokovnega študijskega programa
Tea Cafuta, 2023, diplomsko delo

Opis: Osnova vsake izboljšave je analiza, opravljena na podlagi podatkov do katerih lahko dostopamo. Analiza poslovnih procesov služi kot osnovna opora, ki usmerja organizacijo k uspešnemu in učinkovitemu poslovanju. Na podlagi usmeritve tok analize pa lahko izboljšujemo bodisi učinkovitost bodisi uspešnost. Tako z usmerjenostjo v organizacijo izboljšujemo učinkovitost, katere rezultat je, na primer zmanjšanje časa proizvodnje, usmerjenost na okolje in trg, v katerem se organizacija nahaja, ta pa prinaša večjo uspešnost rezultata, primer tega pa je večji dobiček. Vhodni materiali toka se navezujejo na surovine oziroma materiale, ki se skozi izbrane procese poslovanja preoblikujejo v izdelke ali storitve in zajemajo vse dejavnosti od naročila surovin do njihove uporabe oziroma ponovnega naročila teh. Diplomsko delo je osredotočeno na analizo vhodnega materialnega toka in na podlagi izbranih analiz podaja možnosti izboljšave ter jih podkrepi z realnimi vrednostmi.
Ključne besede: izboljšava, analiza stanja, zaloga, transportni problem, dostava
Objavljeno v DKUM: 14.02.2024; Ogledov: 39; Prenosov: 1
.pdf Celotno besedilo (1,21 MB)

2.
Preprečevanje izgub tovora z inovativno tehnologijo pametnih kontejnerjev : diplomsko delo visokošolskega strokovnega študijskega programa
Manja Hrastnik, 2023, diplomsko delo

Opis: Diplomsko delo je sestavljeno iz dveh integralnih komponent. Začetni segment ponuja teoretično predstavitev, ki zajema pomorski in kontejnerski promet. To pojasnjuje temeljno bistvo teh dveh konceptov, razmejuje njune prednosti in slabosti ter zaporedne korake znotraj paradigme kontejnerskega transporta. Nato se naslednje poglavje poglobi v bistvo tega dela, ki se vrti okoli izgub kontejnerjev in zamud. Poglablja se v temeljne vzroke teh pojavov, a hkrati razlaga njihove posledice, ki jih je mogoče priročno razvrstiti v okoljske in gospodarske. V drugem segmentu je celovit prikaz današnjega scenarija. To vključuje zapleteno upodobitev procesa pošiljanja kontejnerjev, ki se začne od točke oddaje naročila in doseže vrhunec s prihodom tovora na določen cilj. Ta diskurz se neopazno nadaljuje v raziskovanje sodobnih tehnologij sledenja. Ta kontekst postavlja temelje za glavno temo diplomskega dela – preprečevanje izgub tovora z inovativno tehnologijo pametnih kontejnerjev. Ti kontejnerji združujejo fizično infrastrukturo z nizom senzorjev, komunikacijskih sistemov in zmogljivosti za obdelavo podatkov za zagotavljanje vpogledov v realnem času, s čimer povečujejo varnost tovora in nadzor. Poleg tega je razloženo razlikovanje med pametnimi kontejnerji in obstoječimi tehnologijami sledenja kontejnerjev, kar omogoča jasno razumevanje velikih razlik in inherentnih prednosti, povezanih s pametnimi kontejnerji. Na podlagi obsežnih raziskav postane očitno, da kljub znatnim začetnim stroškom implementacije predstavljajo preudarno in stroškovno učinkovito dolgoročno rešitev. Ta rešitev, ki temelji na globokem razumevanju raziskanega problema, je pripravljena na učinkovito zmanjšanje pojavnosti izgub kontejnerjev v pomorskih in tranzitnih domenah, kar na koncu prinese oprijemljive koristi.
Ključne besede: izguba kontejnerjev, kontejnerizacija, naprave za sledenje, pametni kontejnerji
Objavljeno v DKUM: 14.02.2024; Ogledov: 46; Prenosov: 1
.pdf Celotno besedilo (2,45 MB)

3.
Optimizacija poslovanja odpremnega skladišča za zmanjševanje in obvladovanje zalog v opazovanem podjetju : diplomsko delo visokošolskega strokovnega študijskega programa
Nika Zagorc Okorn, 2023, diplomsko delo

Opis: Diplomsko delo je zasnovano na podlagi opazovanja poslovanja odpremnega skladišča. Osredotočili smo se na problematiko, ki je v opazovanem podjetju prisotna že dalj časa. Na začetku raziskovanja smo naredili analizo obstoječega stanja, s katero smo pridobili boljši vpogled v samo problematiko poslovanja v odpremnem skladišču. Kasneje smo s pomočjo procesne karte prikazali trenutno delovanje v odpremnem skladišču, s pomočjo katerega smo lahko kasneje naredili vzročno-posledični diagram, ki prikazuje vzroke za neuspešno poslovanje. V jedru diplomskega dela smo se osredotočili na samo problematiko poslovanja in raziskovali morebitne predloge za izboljšanje. V zaključku diplomskega dela smo predstavili svoje ugotovitve in podali predloge za izboljšanje poslovanja odpremnega skladišča.
Ključne besede: odpremno skladišče, optimizacija, zaloge, skladiščenje, organizacija
Objavljeno v DKUM: 14.02.2024; Ogledov: 45; Prenosov: 2
.pdf Celotno besedilo (2,35 MB)

4.
Barriers to applying last-mile logistics in the Egyptian market : an extension of the technology acceptance model
Mohamed Amr Sultan, Tomaž Kramberger, Mahmoud Barakat, Ahmed Hussein Ali, 2023, izvirni znanstveni članek

Opis: Drawing on the Technology Acceptance Model (TAM), this research aims to investigate the impact of social, environmental, and technological barriers on adopting the last-mile logistics application. This research used a self-administrative questionnaire to collect 1060 respondents from the Egyptian market and analysed it using partial least square structural equation modeling. The findings revealed that some elements could obstruct the implementation of last-mile delivery technologies, namely complexity, collaboration efforts between users and application developers and the impact of technical knowledge and expertise on the potentially involved users. The sharing economy helps organisations reduce contaminants, emissions and carbon footprints, and last-mile logistics is one of the tools of the sharing economy that can enhance the productivity and competitiveness of logistics and boost consumer fulfillment. This research will help enhance organisations’ performance in Egypt as a developing country and push towards applying environmental sustainability practices, as it introduces a tool to enhance customer satisfaction and reduce emissions by illustrating how last-mile logistics can be implemented. This is particularly important as last-mile logistics face some implementation barriers, especially in developing countries. In addition, it will help in extending the theory through conceptualising its abstract ideas with the research variables and applying it in a different context.
Ključne besede: technology acceptance model, technology implementation barrier, last-mile delivery, sustainability, sharing economy, structural equation modelling
Objavljeno v DKUM: 15.12.2023; Ogledov: 220; Prenosov: 8
.pdf Celotno besedilo (1,04 MB)
Gradivo ima več datotek! Več...

5.
Managing the complexity of empty container movements through repositioning strategies and routing practices under certain demand and supply : doctoral dissertation
Alaa Abdelshafie, 2023, doktorska disertacija

Opis: Over the past decades, container transportation management has become an important part of the global maritime industry. Due to an ever-increasing movement of containers across the globe in line with the economic boom, the trade imbalance and issues related to empty containers have become inevitable. The accumulation of empty containers in specific ports not only causes a waste of money but also increases the environmental footprint. Accordingly, the urgent need for empty container management has been gaining more attention than ever before, as the shipping companies recognized that more revenues are always derived from a good repositioning strategy. In this respect, this thesis described state-of-the-art of empty container management, focusing on the practices concerning the movement of empty containers that are varied between organizational policies, technical solutions, and optimization applications. With the development of computer-aided systems, the combination of optimization and simulation models has been proposed to tackle the maritime empty container problem. The thesis shows how the strengths of optimization-based simulation can be integrated to provide high-quality solutions with low computational costs. Agent-based modelling was developed to model the global movements of empty containers, providing realistic details of interactions among entities and characteristics of components within the system. The model was applied between ports in the Middle East and Asia for one of the biggest shipping lines worldwide. By using simulated annealing (SA), the best sequence for moving containers can be determined. The results comparison demonstrate that the proposed optimised repositioning strategy can significantly reduce the shipping line’s costs and make full use of empty containers in the planning horizon.
Ključne besede: shipping industry, container transportation management, empty container repositioning, simulation, optimization, agent-based modelling
Objavljeno v DKUM: 08.12.2023; Ogledov: 253; Prenosov: 13
.pdf Celotno besedilo (3,38 MB)

6.
Analiza parametrov, ki vplivajo na čas obravnave pacientov v Urgentnem centru Maribor : diplomsko delo univerzitetnega študijskega programa
Valentina Vavdi, 2023, diplomsko delo

Opis: Prezasedenost v urgentnih centrih in preobremenjenost osebja je problem, ki se trenutno pojavlja marsikje po svetu. Prezasedenost urgentnih centrov ima posreden negativen vpliv tako na paciente kot na zaposlene. Z ozkimi grli nastajajo zamude pri zdravljenju, poviša se lahko stopnja smrtnosti pacientov, podaljšuje se čas obravnave in pacient je bolj dovzeten za ponovno hospitalizacijo. Da bi zmanjšali preobremenjenost urgentnih centrov, smo v diplomskem delu poskusili napovedati čas trajanja obravnave pacientov glede na izbrane parametre in s tem poskusili predvidevati, kako dolgo traja obravnava pacienta na urgenci glede na značilnosti pacienta in obravnave. V prvem delu smo naredili pregled strokovnih člankov, kjer so avtorji raziskovali podobne primere našemu. Predstavili smo tudi trenutno metodologijo organizacije slovenskih urgentnih centrov. Nadaljevali smo z raziskovalnim delom, kjer smo iskali linearni regresijski model, ki bi najbolje opisal izbrane podatke. Rezultate smo interpretirali in identificirali kritične parametre. V zaključku diplomskega dela smo podali rešitve tako za izboljšavo modela kot rešitve za razbremenitev urgentnih centrov.
Ključne besede: UKC Maribor, urgentni center, prezasedenost, čas trajanja obravnave pacientov, linearna regresija
Objavljeno v DKUM: 04.09.2023; Ogledov: 284; Prenosov: 45
.pdf Celotno besedilo (2,51 MB)

7.
Repositioning and optimal re-allocation of empty containers : a review of methods, models, and applications
Alaa Abdelshafie, May Salah, Tomaž Kramberger, Dejan Dragan, 2022, izvirni znanstveni članek

Opis: Managing empty-container movements is one of the most challenging logistics problems in the shipping field. With the growth of global trade imbalance, the repositioning process has become necessary, immediately after emptying a container. The main contribution of this research paper is to enrich the most frequently used methods, models, and applications in the literature, for relaxing the empty-container-repositioning problem. The article presents practices that vary between organizational policies, technical solutions, and modelling applications. A review of optimization models has been used for comparisons, based on specified criteria, such as the time frame, inputs, outputs, scale of the project, and value. Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) was applied through the online database Web of Science (WOS). It gives a comprehensive description of all the relevant published documents. On the basis of conducting a brief systematic review, future research opportunities have been determined, considering the emerging phenomena in container transport chains.
Ključne besede: shipping industry, container-transportation management, empty-container repositioning, optimization methods
Objavljeno v DKUM: 08.08.2023; Ogledov: 259; Prenosov: 20
.pdf Celotno besedilo (886,56 KB)
Gradivo ima več datotek! Več...

8.
Simulated global empty containers repositioning using agent-based modelling
Alaa Abdelshafie, Bojan Rupnik, Tomaž Kramberger, 2023, izvirni znanstveni članek

Opis: Due to an ever-increasing movement of containers across the globe in line with the economic boom, the trade imbalance and issues related to empty containers have become inevitable. Empty containers accumulated at specific ports cannot only generate profit but also increase the environmental footprint. This research proposes a Maritime Empty Container Reposition Modelling Framework by integrating the agent-based modelling (ABM) paradigm to model the global movements of empty containers. An agent-based maritime logistic empty container redistribution model was developed to help minimize the total relevant costs for empty container movement in the planning horizon. In the system, ports, shipping companies, customers, and empty containers were identified as critical agents. Using simulated annealing (SA), shipping line agents were able to optimise empty container repositioning to determine the best sequence for moving containers. The model was applied to the Asia–Middle East region to simulate global empty containers repositioning in the region. The results comparison shows that the proposed optimised empty container repositioning framework can significantly reduce the shipping line’s costs and make full use of empty containers
Ključne besede: maritime industry, empty containers, repositioning, agent-based modelling, simulation, optimisation
Objavljeno v DKUM: 02.08.2023; Ogledov: 209; Prenosov: 20
.pdf Celotno besedilo (2,91 MB)
Gradivo ima več datotek! Več...

9.
Model energijskih tokov v sistemu distribuirane energetske oskrbe na osnovi metode simulacije diskretnih dogodkov : doktorska disertacija
Dušan Kragelj, 2022, doktorska disertacija

Opis: V času, ko je racionalna poraba energije in trajnostna naravnanost njenega pridobivanja postala že vsakdanja, je eden izmed že preverjenih in razširjenih načinov pridobivanja energije v javnih ustanovah kot so šole, bolnišnice, trgovski centri in podobno tako imenovana decentralizirana ali distribuirana proizvodnja električne energije, toplote in hladu, v tujini znana pod terminom Distributed Energy Resources (v nadaljevanju DER). Kot tudi na drugih področjih življenja sta tudi pri pridobivanju energije optimizacija in napovedovanje porabe esencialnega pomena za rentabilno in okoljsko sprejemljivo delovanje. V doktorski disertaciji smo proučevali sistem sestavljen iz tri-generatorja z dodatno absorpcijsko toplotno črpalko za pretvorbo toplote v hlad in dodatnega bojlerja ter kompresorske toplotne črpalke. V takšnih sistemih se za napovedovanje v večini uporabljajo samo zgodovinski podatki o porabi, saj drugih podatkov nimamo na voljo. Zaradi tega metode, ki jih avtorji uporabljajo za modeliranje oskrbe z energijo v industrijskih sistemih, niso povsem uporabne in zato je bil nujno potreben drugačen pristop.
Ključne besede: distribuirana proizvodnja energije, logistični proces, simulacije diskretnih dogodkov, optimizacija in napovedovanje, trajnostno pridobivanje energije
Objavljeno v DKUM: 22.02.2023; Ogledov: 527; Prenosov: 1
.pdf Celotno besedilo (3,48 MB)

10.
Logistics systems in economics: an example of system application in a company
Čedomir Božić, 2022, magistrsko delo

Opis: In modern society, which is characterized by process of rapid change in the logistics sector, including supply chain, transport and Internet protocols, and which are partly conditioned by changes due to the COVID-19 pandemic, placement and sale of products within retail chains requires a stronger marketing strategy which would significantly promote the benefits of their purchase. Based on the presented facts, we can state that the logistics management process, which includes supply chain risk management, is a continuous task whose main task is to anticipate possible risks, take action during their period and minimize the consequences of all forms (types) of risk business. Every institution and economic organization in our country should seriously and continuously approach the identification of risks by the type of risk and appropriate action to eliminate it. The consequence of adequate risk management is transparent and more efficient business operations that lead to a more prosperous and profitable business. The type and manner of risks, as well as the definition of measures and strategies that will be applied to eliminate them, requires a significant commitment of funds. Sometimes it is enough to react in time and prevent actions that require minimal engagement to prevent consequences that can have significant negative consequences such as domino effects. The consequences of the economic sector, actions, and measures taken often have a consequential impact on the country's overall political, social, and economic system. Therefore special attention is paid to the protection and prevention of risks in banking to avoid sudden changes and adverse effects of monetary policy. The contribution to market stability is of public and national interest, so paying more attention to one of the primary problems in business and risk management. Within the operation of the economic system, there are a large number of employees, and therefore it is vital to properly delegate functions, powers, and tasks and, by them, adequate responsibilities, obligations, tasks, rights, and consequences. The work aims to analyze different types of logistics system operations and ways of classifying their functions in supply. Also, the work tries to identify the most critical subjects of logistics services. The work aims to also analyze different types of operations of logistics systems, as well as how their functions are classified, namely functions that facilitate the supply of a particular area. This master's thesis aims to identify the most critical subjects of logistics services within the management of logistics operations with intermediaries' participation and identify their tasks and objectives. The first part of the master's thesis is dedicated to supplying chains as an integral part of logistics systems in economics, their concept and significance, their supply chain management goals, its key components, significance and type of supply chain risks, and their impact on logistics. The second part of the master's thesis is dedicated to the role of transport within logistics systems, the concept, function, and importance of intermodal transport within logistics, the importance and share of intermodal transport costs in the logistics system, and the role of logistics in intermodal transport in the European Union and the USA. The third part of the master's thesis deals with explaining Internet protocols within logistics, defining the concept with an explanation of the elements and functions of Internet network protocols, and the levels of the reference OSI model. In the fourth part, the functioning of logistics within the company LIDL is presented. In the last part of the master's thesis, there are concluding remarks with the used literature.
Ključne besede: logistics, logistics systems, supply chain, intermodal transport, internet protocol
Objavljeno v DKUM: 04.11.2022; Ogledov: 430; Prenosov: 28
.pdf Celotno besedilo (1,21 MB)

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