Iskanje po katalogu digitalne knjižnice

Opis: As blockchain increasingly demonstrates advantages in enhancing consumer trust and reducing collaborative production costs in food supply chains, more food companies are developing blockchain-based supply chain management platforms. However, in a complex and competitive supply chain environment, food companies face critical operational management challenges in selecting appropriate blockchain R&D approaches and determining optimal R&D levels. This study examines two competing food companies deciding on their optimal food production and blockchain R&D levels. We first established a benchmark model without blockchain adoption. Then, we constructed supply chain operation models for both independent and collaborative blockchain R&D scenarios. By comparing equilibrium decisions across different models, we derived the optimal blockchain R&D model and operational strategies in food supply chains. Furthermore, we extended our analysis to consider asymmetric food substitution scenarios. Our findings revealed that independent blockchain R&D tends to increase equilibrium food production and is more suitable for premium food supply chains. Conversely, collaborative blockchain R&D significantly enhanced overall supply chain profitability. As spillover effects increase, food companies are likely to favor independent blockchain R&D to achieve higher R&D levels and stronger market competitiveness. Additionally, we demonstrated that blockchain R&D levels are influenced by food substitutability and quality credibility.
Ključne besede: blockchain adoption, food supply chains, game theory, competitive collaboration, operation strategy, spillover effects
Objavljeno v DKUM: 19.01.2026; Ogledov: 0; Prenosov: 0
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Opis: Supply chains in a global business environment operate within conflicting aspects. This research analyses correlation and interdependencies between inventory levels, costs and greenhouse gas emissions from replenishments within supply chain echelon. A simulation-based inventory optimisation conducted on 4000 experiments assumes the conditions of stochastic market demand, (R, s, S) inventory policy, target fill rates, predefined lead times and closing days constraint. It verifies the influence of operational and logistic decisions such as frequency of inventory replenishments or vehicle size selection on management objectives. Besides determining the best individual results for the objectives of minimum inventory levels, total costs and emissions, the overall best solutions in terms of three decision models - uniformly valued, cost-oriented and environmentally responsible model, were determined using multi-criteria decision-making methodology. These models are relevant for both scientific and practical managerial settings due to the evident lack of research simultaneously analysing inventory, cost and environmental performances of (R, s, S) policy. This study confirms that it is crucial in practice to perform an extensive simulation experiment analysis for each product to be able to determine its optimal settings. Inventory management software should have a direct influence on operational decisions in order to reduce costs or emissions within the same fill rate.
Ključne besede: green supply chain, multi-criteria decision making, environmental impact, costs, inventory levels
Objavljeno v DKUM: 15.01.2026; Ogledov: 0; Prenosov: 0
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Ključne besede: statistics, logistics, supply chains, demand forecasting, simulation modeling, regression analysis, artificial intelligence, machine learning
Objavljeno v DKUM: 19.12.2025; Ogledov: 0; Prenosov: 3
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Opis: The world population is projected to reach 9 billion by 2050, which is 34% higher than it is now and the demand for agricultural food is expected to increase as well. Research has shown that the demand for soya beans is on the increase owing to its contribution in cooking oil, stock feed and other by-products. On average, Zimbabwe’s soya bean national output production is only enough to meet 30% of national demand, which is supplemented by imports from South Africa, Zambia and Malawi. Constraints in information gathering, storage, safeguarding, and sharing, environmental changes and escalations in input prices has become a catch phrase for soya bean supply systems failure. This study’s objective is to explore strategies which can be adopted by soya bean small to medium scale farmers to realise sustainability in their supply chains and build food security in Mashonaland Central Province of Zimbabwe. This study therefore proposes the integration of Blockchain Technology (hereafter: BCT) and Internet of Things (hereafter: IoT) to improve sustainability in the soya bean supply chain systems in Zimbabwe. The researchers adopted a pragmatism research philosophy premised on the mixed methods research approach because quantitative data alone is not sufficient to answer the research questions. Quantitative data were analysed using STATA 15 and NVivo version 16 was used to analyse qualitative data. Using Krejcie and Morgan (1970) a sample size of 375 farmers was randomly selected to respond to questionnaires. Six (6) AGRITEX officers and two (2) Agronomists were purposefully selected from the six (6) districts of Mashonaland Central Province and were interviewed. Findings from the research showed that there is minimal uptake of Artificial Intelligence (hereafter: AI) technologies in soya bean supply chains in Mashonaland Central Province which has slowed the improvements in production and sustainability of agro-supply chains. The study recommends the integration of blockchain and IoT technologies to improve sustainability in soya bean production in Zimbabwe.
Ključne besede: block chain technologies, IoT technologies, agro food, supply chain
Objavljeno v DKUM: 28.10.2025; Ogledov: 0; Prenosov: 2
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Opis: Ethics has become a trending phenomenon in most disciplines as a result of the sustainability wave enshrined in the United Nations Sustainability Goals (SDGs). In business circles procurement ethics have become topical as a result of the rising malpractices whose ripple effects have far reaching economic, social and environmental consequences. In the agricultural supply chains procurement ethics have been called to question due to outcries from the tobacco contract farmers whose livelihoods are affected by supplier development washing in the form of exorbitantly priced contract farming inputs. The unethical practice of supplier development washing in the form of exorbitantly priced tobacco contract farming inputs has some ripple effects which this study sought to determine. Twenty-five contracted tobacco farmers were interviewed and the results indicated that farmers subjected to tobacco merchants’ unethical conduct tend to practice contractor switching, side marketing, become insolvent, and indulge in unorthodox cost cutting measures. The study recommended that the regulatory authorities should intervene to bring sanity to the tobacco supply chains through enforcing contract farming mechanisms that reflect genuine supplier development.
Ključne besede: information and communication technology, supply chain efficiency, SMEs and material requirement planning
Objavljeno v DKUM: 28.10.2025; Ogledov: 0; Prenosov: 2
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