A5090985762- Transportation and Mobility Innovations
- Vehicle Routing Optimization Methods
- Urban and Freight Transport Logistics
- Advanced Manufacturing and Logistics Optimization
- Transportation Planning and Optimization
- Auction Theory and Applications
- Scheduling and Optimization Algorithms
- Supply Chain and Inventory Management
- Optimization and Search Problems
- COVID-19 and healthcare impacts
- COVID-19 Clinical Research Studies
- Sharing Economy and Platforms
- Smart Parking Systems Research
- Facility Location and Emergency Management
- Business Strategy and Innovation
- Maritime Ports and Logistics
- Assembly Line Balancing Optimization
- Manufacturing Process and Optimization
- Optimization and Mathematical Programming
- Healthcare Operations and Scheduling Optimization
- Consumer Market Behavior and Pricing
- Blockchain Technology Applications and Security
- SARS-CoV-2 and COVID-19 Research
- Supply Chain Resilience and Risk Management
- Infection Control and Ventilation
University of Klagenfurt
2020-2024
University of Vienna
2011-2022
Vienna University of Economics and Business
2013-2018
The rising competition in the logistics sector forces companies to be more economically efficient. One of major sources inefficiency is incomplete usage available resources, such as vehicles’ capacities. Mechanism that allow better exploit resources by enabling carrier collaborations are on rise. Our study examines a centrally organized multi-period collaborative vehicle routing problem, where carriers can exchange customers who have serviced regular basis. Collaborations, serve frequent...
In this paper, we present the vehicle routing problem (VRP) with occasional drivers (OD) and order bundles (OB). The VRP-OD-OB is an extension of VRP-OD, where instead assigning one customer per driver, are assigned customers. To deal bundle-to-driver assignment, a bidding system exploited, in which company offers set raise their bids. These bids depend on features such as drivers' destination, flexibility deviating from shortest path, willingness to offer service. generate valuable...
Due to potentially immune-escaping virus variants and waning immunity, a third SARS-CoV-2 vaccination dose is increasingly recommended. However, data in patients with cancer are limited.We measured anti-SARS-CoV-2 spike protein antibody levels after the 439 41 health care workers (HCW) at an academic centre Austria rural community hospital Italy. Adverse events were retrieved from questionnaires.Overall, HCW included. infections observed 62/439 (14.1%) before 5/439 (1.1%) ≥1 dose....
To analyze the prevalence of SARS-CoV-2 infection in patients with cancer hospital care after implementation institutional and governmental safety measurements.
In this paper, we address the location of locker boxes in last-mile delivery context under uncertainty demand and capacity. The problem is modeled as an extension capacitated facility problem, which a fixed number facilities has to be opened, choosing among set potential locations. Facilities are characterized by homogeneous capacity, but capacity reduction may occur with given probability. incorporated through discrete scenarios. Each customer can assigned only compatible facilities, i.e.,...
In horizontal collaborations, carriers form coalitions in order to perform parts of their logistics operations jointly. By exchanging transportation requests among each other, they can operate more efficiently and a sustainable way. This exchange be organized through combinatorial auctions, where collaborators submit for common pool. The the pool are grouped into bundles, these offered participating carriers. From practical point view, offering all possible bundles is not manageable, since...
The transportation industry expanded rapidly in a highly competitive environment. Logistics companies with insufficient volume of transport capacities are forced to make selection customers that they can integrate efficiently into their tours. This is particular relevance the pickup and delivery market, where shipments from several different be moved on same vehicle. In literature, however, problem customer has not been applied for given class problems so far. We want fill this gap by...
Warehouses are key elements of supply chain networks, and great attention is paid to increase their efficiency. Highly volatile space requirements enablers innovative resource sharing concepts, where warehouse capacities traded on online platforms. In this context, our paper introduces the on-demand warehousing problem from perspective platform providers. The objective prioritises demand–supply matching with maximisation number transactions. If there a tie, secondary maximises suppliers...
Additive Manufacturing (AM) is a technology with the potential to disrupt entire supply chains - one reason why AM attracted attention from both academia and practitioners in last decade. In recent years, researchers have focused on increasing efficiencies of operations as has reached new levels maturity. Collaborative production (CP) proven approach for decreasing costs conventional fields production. However, CP not been sufficiently studied context AM. Our study aims close this research...
In this study, we consider balancing problems of one- and two-sided assembly lines with real-world constraints like task or machine incompatibilities. First, study the one-sided line problem (ALBP) a limited number types per workstation. Using genetic algorithm (GA), find optimal results for instances. A set larger test cases is used to compare two well-established solution approaches, namely GA tabu search (TS). Additionally, apply specific differential evolution (DE), which has recently...
Collaboration has been one of the important trends in vehicle routing. A typical mechanism to enable carrier collaboration is use combinatorial auctions, where requests are not traded individually but combined into bundles. Previous literature on focused issues such as bundle formation or winner determination, typically assuming truthfulness all agents and absence any strategic behavior. This article considers interdependencies problems that arise from bidders acting buyers sellers at same...
Abstract Carriers can remarkably reduce transportation costs and emissions when they collaborate, for example through a platform. Such gains, however, have only been investigated relatively small problem instances with low numbers of carriers. We develop auction-based methods large-scale dynamic collaborative pickup delivery problems, combining techniques multi-agent systems combinatorial auctions. evaluate our approach in terms both solution quality possibilities strategic behaviour using...
In this study we investigate the decision problem of a central authority in pickup and delivery carrier collaborations. Customer requests are to be redistributed among participants, such that total cost is minimized. We formulate as multi-depot traveling salesman with pickups deliveries. apply three well-established exact solution approaches compare their performance terms computational time. To avoid unrealistic solutions unevenly distributed workload, extend by introducing minimum workload...