| | SLO | ENG | Piškotki in zasebnost

Večja pisava | Manjša pisava

Iskanje po katalogu digitalne knjižnice Pomoč

Iskalni niz: išči po
išči po
išči po
išči po
* po starem in bolonjskem študiju


1 - 10 / 74
Na začetekNa prejšnjo stran12345678Na naslednjo stranNa konec
A conceptual model of developing an agile work environment
Katja Crnogaj, Polona Tominc, Maja Rožman, 2022, izvirni znanstveni članek

Opis: This study has highlighted the need for an agile work environment to enhance companies’ performance, growth, and sustainability. In today’s rapidly changing business world, the goal of every individual and team in a company should be to deliver value to customers. The paper highlights theoretical and empirical evidence on the importance of an agile work environment and its positive effect on company performance. In addition, the paper provides insights into the important concept of developing an agile work environment and offers a conceptual model with five selected constructs, which can be leveraged to build an agile mindset in companies. Moving away from traditional leadership models, this paper highlights the significant role that agile leadership can play in enhancing effectiveness and performance, even in long-established large companies. The empirical research was based on 468 randomly selected medium and large Slovenian companies. Structural equation modelling (SEM) was used to test the model. The empirical results show that changing and adaptive agile companies are the ones that thrive more easily in an environment that is unpredictable and characterized by rapid change.
Ključne besede: agility, agile work environment, company performance, conceptual model
Objavljeno v DKUM: 21.09.2023; Ogledov: 16; Prenosov: 1
.pdf Celotno besedilo (584,80 KB)
Gradivo ima več datotek! Več...

An optimisation model for minimising totes exchange in VLM and SBS/RS integrated system
Jakob Marolt, Goran Đukić, Fabio Sgarbossa, Tone Lerher, 2022, objavljeni znanstveni prispevek na konferenci

Opis: Warehouses and distribution centres are based on integrated material handling solutions. Most of the research papers in intralogistics are only concerned with one system to analyse and optimise the addressed system's performance, such as maximum throughput performance, minimum total cost, maximum energy efficiency, etc. This paper presents a concept to justify the proposed VLM and SBS/RS integrated system and a binary integer programming (BIP) model that minimises totes exchange between the two storage systems. The results show that the minimal number of exchanges between VLM and SBS/RS was achieved in a case study with a longer order list (T = 1600) and a highly dependent SKU's Pareto relationship (20-50).
Ključne besede: automated warehousing, intralogistics, VLM, SBS, RS, integrated systemoptimisation, performance analysis
Objavljeno v DKUM: 02.08.2023; Ogledov: 110; Prenosov: 14
.pdf Celotno besedilo (743,43 KB)
Gradivo ima več datotek! Več...

Product assembly assistance system based on pick-to-light and computer vision technology
Darko Hercog, Primož Bencak, Uroš Vincetič, Tone Lerher, 2022, izvirni znanstveni članek

Opis: Product assembly is often one of the last steps in the production process. Product assembly is often carried out by workers (assemblers) rather than robots, as it is generally challenging to adapt automation to any product. When assembling complex products, it can take a long time before the assembler masters all the steps and can assemble the product independently. Training time has no added value; therefore, it should be reduced as much as possible. This paper presents a custom-developed system that enables the guided assembly of complex and diverse products using modern technologies. The system is based on pick-to-light (PTL) modules, used primarily in logistics as an additional aid in the order picking process, and Computer Vision technology. The designed system includes a personal computer (PC), several custom-developed PTL modules and a USB camera. The PC with a touchscreen visualizes the assembly process and allows the assembler to interact with the system. The developed PC application guides the operator through the assembly process by showing all the necessary assembly steps and parts. Two-step verification is used to ensure that the correct part is picked out of the bin, first by checking that the correct pushbutton on the PTL module has been pressed and second by using a camera with a Computer Vision algorithm. The paper is supported by a use case demonstrating that the proposed system reduces the assembly time of the used product. The presented solution is scalable and flexible as it can be easily adapted to show the assembly steps of another product.
Ključne besede: product assembly, PTL, pick-to-light, computer vision, LabVIEW, performance analysis
Objavljeno v DKUM: 31.07.2023; Ogledov: 104; Prenosov: 14
.pdf Celotno besedilo (12,43 MB)
Gradivo ima več datotek! Več...

The role of B2B marketing strategy, ICT B2B marketing support, and service quality in market orientation – Performance relationship : evidence from three European countries
Gregor Jagodič, Borut Milfelner, 2022, izvirni znanstveni članek

Opis: The purpose of this study is to evaluate the role of marketing strategy, information communication technology (ICT) marketing support, and service quality in the market orientation–performance relationship. Even though there are many studies considering the market orientation–performance relationship they rarely take into consideration ICT marketing support and marketing strategy, especially concerning the companies operating in B2B markets. Additionally, this study compares the impacts of the constructs between two emerging economies (Slovenia and Serbia) and one developed economy (Austria) on a random sample of 636 companies. Results were obtained based on the set hypotheses using the covariance-based structural equation modeling (SEM) and invariance testing procedure to make comparisons between the three countries. Market orientation strongly influenced the successful development and implementation of marketing strategies, ICT support, and service quality. The impact of service quality on company performance was statistically insignificant and only the indirect impact of market orientation on company performance through service quality was determined. ICT marketing support and successful development and implementation of B2B marketing strategy were also positively related to company performance. This study can help managers in B2B companies in emerging and developed markets to learn how to use specific marketing resources in order to achieve higher company performance.
Ključne besede: marketing strategy, information-communication technology, service quality, market orientation, firm performance
Objavljeno v DKUM: 17.07.2023; Ogledov: 109; Prenosov: 19
.pdf Celotno besedilo (1,20 MB)
Gradivo ima več datotek! Več...

Analysis and improvements of the mechanisms for cross-border interchange and activation of the regulating reserves : doctoral dissertation
Marcel Topler, 2022, doktorska disertacija

Opis: This Doctoral Thesis deals with the mechanisms for cross-border interchange and activation of the regulating reserves (RRs), i.e., Imbalance Netting Process (INP) and Cross-Border Activation of the RRs (CBRR), between participating Control Areas (CAs), to reduce the costs of balancing energy. The main objective of INP is to interchange the RRs between participating CAs with opposite signs of interchange power variation. In comparison, the main objective of CBRR is to activate the RRs in participating CAs with the same signs of interchange power variation. Both the INP and CBRR aim to release the RRs and reduce balancing energy as part of the power system's safe operation. The Thesis's main objective is to analyze the impact of the mechanisms for cross-border interchange and activation of the RRs on mutual oscillations of participating CAs and stability for small disturbances. The Thesis's secondary objective is to analyze the impact of the INP and CBRR on frequency quality, on the provision of Load-Frequency Control (LFC), on balancing energy and unintended exchange of energies between participating CAs. Frequency quality in Continental Europe (CE) has been declining in recent years, so it is important that the mechanisms for cross-border interchange and activation of the RRs do not further impair its quality. Both the classic INP and CBRR include a frequency-dependent contribution and, therefore, inherently affect the frequency response of the participating CAs, which is not discussed in the literature. Thus, the impact of the classic INP and CBRR on frequency quality and the provision of LFC is thoroughly evaluated with dynamic simulations of a three-CA test system and eigenvalue analysis of a two-CA system. It is demonstrated that both the classic INP and CBRR reduce the damping of the entire power system. Therefore, a modified implementation of the classic INP and CBRR is presented, and improved INP and CBRR are proposed, which have no impact on the mutual oscillations of participating CAs and stability for small disturbances. Furthermore, the dynamic simulations results confirm that the frequency quality can be improved by the classic INP and CBRR, although there are also cases where it can deteriorate. However, the improved INP and CBRR generally improve the frequency quality in all cases. The improved INP and CBRR also enhance the provision of LFC compared to the classic INP and CBRR. Moreover, the improved INP and CBRR reduce the unintended exchange of energies, thus increasing the economic effects of the INP's and CBRR's activation. The improved INP increases energy exchange, therefore positive economic benefits can be expected in comparison to the system with the classic INP. However, the improved CBRR reduces energy exchange, therefore positive economic benefits can be expected in comparison to the system with the classic CBRR, since energy exchange is paid by CA via bidding process.
Ključne besede: load-frequency control, imbalance netting, cross-border activation, balancing energy, regulating reserves, eigenvalue analysis, performance indicators, area control error, rate of change of frequency, control area
Objavljeno v DKUM: 09.03.2023; Ogledov: 187; Prenosov: 49
.pdf Celotno besedilo (14,64 MB)

Simulation model for robotic pick-point evaluation for 2-F robotic gripper
Primož Bencak, Darko Hercog, Tone Lerher, 2023, izvirni znanstveni članek

Opis: Robotic bin-picking performance has been gaining attention in recent years with the development of increasingly advanced camera and machine vision systems, collaborative and industrial robots, and sophisticated robotic grippers. In the random bin-picking process, the wide variety of objects in terms of shape, weight, and surface require complex solutions for the objects to be reliably picked. The challenging part of robotic bin-picking is to determine object pick-points correctly. This paper presents a simulation model based on ADAMS/MATLAB cosimulation for robotic pick-point evaluation for a 2-F robotic gripper. It consists of a mechanical model constructed in ADAMS/View, MATLAB/Simulink force controller, several support functions, and the graphical user interface developed in MATLAB/App Designer. Its functionality can serve three different applications, such as: (1) determining the optimal pick-points of the object due to object complexity, (2) selecting the most appropriate robotic gripper, and (3) improving the existing configuration of the robotic gripper (finger width, depth, shape, stroke width, etc.). Additionally, based on this analysis, new variants of robotic grippers can be proposed. The simulation model has been verified on a selected object on a sample 2-F parallel robotic gripper, showing promising results, where up to 75% of pick-points were correctly determined in the initial testing phase.
Ključne besede: intralogistics, robotic bin-picking, simulation model, ADAMS, pick-point determination, MATLAB/Simulink, 2-F robotic gripper, performance analysis
Objavljeno v DKUM: 27.02.2023; Ogledov: 309; Prenosov: 36
.pdf Celotno besedilo (19,99 MB)
Gradivo ima več datotek! Več...

K-vertex: a novel model for the cardinality constraints enforcement in graph databases : doctoral dissertation
Martina Šestak, 2022, doktorska disertacija

Opis: The increasing number of network-shaped domains calls for the use of graph database technology, where there are continuous efforts to develop mechanisms to address domain challenges. Relationships as 'first-class citizens' in graph databases can play an important role in studying the structural and behavioural characteristics of the domain. In this dissertation, we focus on studying the cardinality constraints mechanism, which also exploits the edges of the underlying property graph. The results of our literature review indicate an obvious research gap when it comes to concepts and approaches for specifying and representing complex cardinality constraints for graph databases validated in practice. To address this gap, we present a novel and comprehensive approach called the k-vertex cardinality constraints model for enforcing higher-order cardinality constraints rules on edges, which capture domain-related business rules of varying complexity. In our formal k-vertex cardinality constraint concept definition, we go beyond simple patterns formed between two nodes and employ more complex structures such as hypernodes, which consist of nodes connected by edges. We formally introduce the concept of k-vertex cardinality constraints and their properties as well as the property graph-based model used for their representation. Our k-vertex model includes the k-vertex cardinality constraint specification by following a pre-defined syntax followed by a visual representation through a property graph-based data model and a set of algorithms for the implementation of basic operations relevant for working with k-vertex cardinality constraints. In the practical part of the dissertation, we evaluate the applicability of the k-vertex model on use cases by carrying two separate case studies where we present how the model can be implemented on fraud detection and data classification use cases. We build a set of relevant k-vertex cardinality constraints based on real data and explain how each step of our approach is to be done. The results obtained from the case studies prove that the k-vertex model is entirely suitable to represent complex business rules as cardinality constraints and can be used to enforce these cardinality constraints in real-world business scenarios. Next, we analyze the performance efficiency of our model on inserting new edges into graph databases with varying number of edges and outgoing node degree and compare it against the case when there is no cardinality constraints checking. The results of the statistical analysis confirm a stable performance of the k-vertex model on varying datasets when compared against a case with no cardinality constraints checking. The k-vertex model shows no significant performance effect on property graphs with varying complexity and it is able to serve as a cardinality constraints enforcement mechanism without large effects on the database performance.
Ključne besede: Graph database, K-vertex cardinality constraint, Cardinality, Business rule, Property graph data model, Property graph schema, Hypernode, Performance analysis, Fraud detection, Data classification
Objavljeno v DKUM: 10.08.2022; Ogledov: 409; Prenosov: 53
.pdf Celotno besedilo (3,43 MB)

Case studies of independent audits of police financial operations by the Court of Audit of the Republic of Slovenia
Bojan Tičar, Jona Koren Fric, 2020, izvirni znanstveni članek

Opis: Purpose: This paper presents an overview of audit-case studies of the Slovenian Court of Audit where the audit subjects were Police financial operations. In relation to other state authorities, the Court of Audit of the Republic of Slovenia is an autonomous and independent state authority that supervises the use of public funds. The Court of Audit supervises all bodies and authorities in Slovenia that are users of public funds, including the Police. Design/Methods/Approach: Research design of this paper is the set of three research methods used in collecting data and analysing findings. First method is descriptive analysis of legal regulations. Second research method is case-study analysis. Third research method is observational study based on direct interview. Synthesis is presented in the conclusions. Findings: The Court of Audit reviews the credibility of the response report of auditee after audit. If the Court of Audit assesses that the remedial actions were not satisfactory and that the user of public funds violated the obligation to ensure operational efficiency, the Court of Audit may issue a call for remedial action and serve such on the competent authority, which can take measures against the auditee. As the Police are a direct user of public funds, the Court of Audit has the power to carry out an audit of the operations of the Police based on the law. The Police as whole have never been the subject of a regularity or performance audit by the Court of Audit. Research Limitations / Implications: We have limited analysed in details only those cases where police units were subjects of audit performed by Slovenian Court of Audit. Originality/Value: The Police have been the subject of three audits in time from beginning of Court of Audit operations and today. These cases are presented in the quality analysis. Based on this quality analysis, authors have also addressed some questions directly to the Court of Audit of the Republic of Slovenia, i.e., in the form of a directed interview. The questions concerned external audits of Police operations by the Court of Audit and an assessment of the cooperation of the Court of Audit with the Police. Our research results are presented in the end of this article. In conclusion, the standpoints of the Court of Audit in fact support our previous findings presented in this paper.
Ključne besede: Slovenian Police, Slovenian Court of Audit, mandatory audits, regularity audits, performance audits, legal regulation of the Court of Audit
Objavljeno v DKUM: 11.06.2021; Ogledov: 887; Prenosov: 13
URL Povezava na celotno besedilo

Notaries' escrow services in selling real estate in the Republic of Slovenia
Bojan Podgoršek, 2020, izvirni znanstveni članek

Opis: Notary's escrow is a legal relationship between the notary and the parties to the underlying legal transaction, which is generally a sales agreement. Notary's escrow is regulated with mandatory statutory rules commissioning public notaries and the rules of the mandate agreement. Mutual obligations of the parties to the underlying legal transaction in and of themselves do not influence the notary's obligations under a notary's escrow agreement unless they are included in the notary's escrow agreement as a constituent part thereof. Slovenian legislation stipulates the general conditions of notaries' operations. However, it does not stipulate specific conditions that must be fulfilled in order to place documents, funds and securities into escrow with a notary, nor does it stipulate the mandatory component elements of the escrow order. Therefore, The Slovenian regulation of notary's escrow should be supplemented.
Ključne besede: escrow services, notaries' escrow services, notary escrow of funds, notary escrow of documents, selling real estate, conditions of notary's escrow, risk of non-performance, legitimate interest for notary escrow
Objavljeno v DKUM: 15.01.2021; Ogledov: 630; Prenosov: 0

Iskanje izvedeno v 0.18 sek.
Na vrh
Logotipi partnerjev Univerza v Mariboru Univerza v Ljubljani Univerza na Primorskem Univerza v Novi Gorici