Iskanje po katalogu digitalne knjižnice

Opis: This paper introduces a novel autonomous vehicle-based storage and retrieval system that utilizes movable lifts (AVS/RS/ML), proposed as an alternative to the tier-captive shuttle-based storage and retrieval system (SBS/RS). The newly proposed system aims to provide an affordable solution with highly utilised AGVs, that can also perform operations out of warehouse. The performance of this novel system is compared with the equivalent tier-captive SBS/RS warehouse design, where each shuttle is dedicated in a specific tier in that design. The comparison is based on the initial system investments costs, throughput rates, and average utilisation of lifts/MLs in the system. Collision prevention rules are also applied to AVS/RS/ML, and its performance is tested through simulation. The results show that the tier-captive SBS/SR system becomes cost-efficient under high throughput rate requirements, while the AVS/RS/ML technology is preferred for relatively moderate and low process rate requirements. The unit-cost per month performance metric of AVS/RS/ML is less sensitive to an increase in number of tiers in the system, compared to the tier-captive SBS/RS case, indicating that AVS/RS/ML may be promising for high-tier warehouse system designs.
Ključne besede: warehouse design, warehousing systems, materials handling, novel autonomous vehicle-based storage and retrieval system, movable lifts
Objavljeno v DKUM: 23.06.2023; Ogledov: 364; Prenosov: 26
Celotno besedilo (1,14 MB)
Gradivo ima več datotek! Več...

Opis: In the bachelor thesis we had undertaken the project of implementation of The Booking Platform in the F.A. Maik d.o.o. company. After four months (January 2017–April 2017) of observing the situation, more specificly in their central warehouse, we have designed The Booking Platform, depending on the needs and the problems, which had bothered the company. We discovered that the main problem was the overcrowding of the vehicles on the parking lot, which came to the warehouse at the same time, therefore the amount of goods that needed to be stored was too big to unload at the same time. The main goal of the thesis was to build the system, which will improve the processes in the F.A. Maik d.o.o. company, related to the influence of time organization in the warehouse. The main aim was to do the analysis of the current situation in the warehouse, and to test the two hypotheses, how can the situation be improved with the implementation of the new system, especially to reduce the number of complaints and to provide more fluent workflow. The project that was implemented was of high value for the company, because the processes in the warehouse were very old fashioned and not automated. The Booking Platform reduced the number of complaints to zero only two months after the implementation. In the observation time, the workflow in the warehouse improved in terms of knowing, when the vehicles are coming to the warehouse and the incoming goods can now be stored immediately, which means that the unloading ramps are now always free for new incoming goods.
Ključne besede: The Booking Platform, time organization, booking, complaints, fluent workflow, warehouse management
Objavljeno v DKUM: 15.10.2018; Ogledov: 1159; Prenosov: 113
Celotno besedilo (1,54 MB)

Opis: The goal of this case study was to examine which implementation of the data warehouse will yield better results in the observed scenario – monitoring of energy consumption in public buildings. Data warehouse (DW) is a type of database created with the goal of preparing data for analysis and reporting. We implemented two versions of DW, one based on the star and the other on the snowflake schema model. Series of tests were conducted to evaluate implemented solutions. Statistical analysis showed that for the observed scenarios, implementation based on snowflake schema performs better, in both shorter ETL execution time and smaller size of DW.
Ključne besede: data warehouse, dimensional model, star schema, snowflake schema, ETL process
Objavljeno v DKUM: 04.07.2016; Ogledov: 1275; Prenosov: 127
Celotno besedilo (2,11 MB)

Opis: From an electric utility perspective, the sun is an intermittent electrical generator, tolerable in huge quantities, but increasingly difficult to manage. The nature of sun is unpredictable, and the Slovenian National Grid has no significant storage opportunities - if the V2G (vehicle-to-grid) solutions could be competitive in the near future it could prepare for special circumstances: the batteries of electrically driven forklifts could provide attractive storage functions for renewable electricity storage and for backupping the electrical national grid. This paper shows the study of the current research findings on the ŽVehicle to Gridʼ innovative concept and a proposed theoretical model of Forklift-to-Grid integration into energy management of a warehouse. Analyses of data, calculations of the economic value and of the profitability of the proposed business model yielded positive results that fully confirm the thesis that the integration of environmentally friendly renewable energy sources and new technologies into the logistic processes can improve logistics management while minimizing the negative impact of business on the environment.
Ključne besede: CO2 emmisions, forklift-to-grid, photovoltaic, vehicle-to-grid, warehouse energy management
Objavljeno v DKUM: 10.07.2015; Ogledov: 1421; Prenosov: 40
Povezava na celotno besedilo

Opis: V nalogi je zajeta problematika prostorske ureditve, preglednosti in urejenosti centralnega skladišča podjetja Gorenje, d. d., ki je posledica pomanjkanja neposredne informacijske podpore. V prvem delu naloge so opredeljene teoretične osnove informacijske tehnologije, informacijske tehnologije v skladiščih ter integracije le-te po okviru COBIT. Prav tako sta teoretično opredeljena program SAP in vmesnik za vodenje skladišč WMS. V nadaljevanju je opredeljeno trenutno stanje in kritična analiza problema. S pomočjo vzročno-posledičnega diagrama so opredeljeni vzroki za takšno stanje, med katerimi izstopata prostorska ureditev in odsotnost neposredne informacijske podpore skladišču. V zadnjem delu naloge je predstavljena uvedba WMS kot predlog rešitve problema. Izvedena je SWOT analiza rešitve. Predstavljene so aktivnosti, ki jih je potrebno izvesti za uspešno uvedbo rešitve, v zaključku pa je komentirana tudi ocena uspešnosti rešitve problema in pogoji za uvedbo rešitve.
Ključne besede: skladiščenje, načrtovanje virov podjetja (angl. enterprise resource planning, krat. ERP), sistem za upravljanje skladišč (angl. warehouse managenent system, krat. WMS), informacijska tehnologija, optimizacija
Objavljeno v DKUM: 01.11.2012; Ogledov: 3678; Prenosov: 610
Celotno besedilo (1,38 MB)