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Abstract: Sustainable engineering is very important for logistics systems. Nowadays, sustainable warehouse management is a key factor in market success. Workforce fluctuation and inverting the number of customers' demands make a lot of problems in distribution warehouses. This study addresses a sustainable approach for the workforce scheduling problem recognized in a real distribution warehouse. The problem arises from the high variability of demand for workers over oneworkday, which causes workforce surplus in some periods of the workday and shortages in others. Engineering managers of the distribution warehouse already use different full-time and part-timeshifts, and schedule workers on different activities, but they still have significant workforce surplusesor shortages in some periods. This study proposes the scheduling of activities' execution together with workers to face that variability and decrease the cost of the workforce. This idea comes from the fact that some activities in a distribution warehouse can be done in a specific time period after the need for them occurs. In this way, the variability of demand for workers can be decreased, and alower workforce cost may be ensured. Based on this idea, the entire problem is modeled as integer linear programming. The real example of the problem is solved, and the proposed model is tested on randomly generated instances of the problem in Python by means of the PuLP linear programming package. The results indicate different positive effects in the manner of sustainable warehouse management: lower workforce costs, time savings, better utilization of all types of resources andequipment, increased employee satisfaction, and so on. For even 61% of instances of the introduced problem, the obtained cost of the workforce is lower by more than 20% if activities' executions arescheduled together with employees.
Keywords: workforce, activities planning, schedule, optimization, warehouses, sustainable warehouse management, logistics
Published in DKUM: 11.10.2024; Views: 0; Downloads: 5
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Abstract: E-mobility sustainability assessment is becoming more comprehensive with research integrating social aspects without focusing only on technical, economic, and/or environmental perspectives. The transportation sector is indeed one of the leading and most challenging greenhouse gaspolluters, and e-mobility is seen as one of the potential solutions; however, a social perspective must be further investigated to improve the perception of and acceptance of electric vehicles. This could consequently lead to the European Green Deal's holy grail: faster decarbonization of the transportation sector. Another way to achieve it is by promoting more comprehensive sustainable development goals. Therefore, this paper combines a systematic review of recent research with research emphasis focused on social aspects of electric vehicles and their interconnection with specific UN Sustainable Development Goals. By knowing the current research focus mainly related with "perception" of electric vehicles and assessing their social "impact" as well as an emerging area of "user experience" and their relations with UN Sustainable Development Goals enables better insight on the current and future directions of electric vehicle social sustainability research. The current priority is identified as "climate actions". Increasingly important "sustainable cities and communities" shows potential forbecoming one of the future research, policy, and community priorities.
Keywords: electric vehicles, družbena trajnost, social aspect, research, sustainable development, logistics
Published in DKUM: 07.10.2024; Views: 0; Downloads: 1
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Abstract: Reverse logistics has become a competitive need for sustainability. Lack of resources to apply reverse logistics solutions has severely impacted many supply chains’ costs and customer service, making it impossible to meet the expectations of return processing. In those conditions, client demands for higher service quality are the main drivers of effective sustainability operations. This study aims to establish the sustainable reverse logistics service quality (SRLSQ) theoretical framework offered by reverse logistics services providers (RLSPs). The study conducts a systematic methodology protocol by examining reliable academic periodicals using PRISMA guidelines based on the research scope and identified 56 papers from 2011–2022, with the main research focus on SSQ and RLSQ dimensions to develop a research framework. By re-evaluating those factors using the SRLSQ framework and by including sustainability into the service quality approach, this study expanded the practicability of reverse logistic service quality and sustainable service quality. The results point to a knowledge gap when it comes to quantifying the impact of reverse logistics operation process through a triple bottom line approach on customer outcomes, relationship quality (RQ), and mediation of operation risk factor, which could be examined within various contexts in subsequent work.
Keywords: sustainability, reverse logistics, sustainable reverse logistics service quality, customer satisfaction, operational risk
Published in DKUM: 09.04.2024; Views: 204; Downloads: 6
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Abstract: Our research work refers to measuring sustainability in supply chains. First of all we will touch the topic, what means measuring sustainability in supply chain and how it can be measured. We will focus on our research area of fifteen companies, where we will investigate how much Slovenian companies deal with sustainability in their companies, how much sustainability means to them and how they measure it, if their company contributes a lot to the sustainability of supply chain or to the sustainable operation of the whole company. In recent years, have the supply chains undergone significant changes as a result of the COVID-19 crisis, which has forced companies to change the way of their operating in order to make their supply chains more efficient. The COVID-19 crisis has therefore made companies realize that they need to move to a circular economy, as it has shown the disruption or vulnerability of current supply chains. About sustainability is more and more speech and also more and more companies are recognizing its importance, because sustainable supply chain affects to the entire production process, from the sourcing of raw materials to the recycling of products or raw materials, if this is possible. A sustainable supply chain increases a company’s competitiveness and also reduces costs for the company.
Keywords: sustainable supply chain, supply chain management, logistics companies, sustainable development
Published in DKUM: 13.07.2023; Views: 415; Downloads: 42
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Abstract: The process of urbanization of coastal tourist destinations (CTDs) is taking place at high speed and at the same time creating a lot of complex problems. The positive trend of urbanization has resulted in increased volume of freight transport which leads to burdening the traffic network, time losses and causes traffic congestion problems on the streets with increased environmental pollution due to emissions, noise and vibration. These findings brought to some research being started on the EU level, aiming to develop new logistic solutions, so these areas could be developed on a sustainable basis. With this in mind, the paper proposes a method of developing a novel model of logistics (MoL) for CTDs through several stages. The point of proposed MoL lies in achieving optimal connectivity of transportation, warehousing and physical distribution of goods, and making it a single functional model, so as to allow simultaneous optimization of logistic processes in a CTD, and to incorporate logistics in tourist offer.
Keywords: coastal tourist destinations, urbanization, traffic network, sustainable logistic solutions, model of logistics, optimization
Published in DKUM: 09.05.2018; Views: 1292; Downloads: 405
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