Filters

2022 - 20242
Reset filters

Settings

Author: Vural, DanismentCOAR Access Rights: metadata only access

Search Results

Now showing 1 - 2 of 2
  • Thumbnail Image
    Article
    Citation - WoS: 3
    Citation - Scopus: 4
    Selecting Facility Location of Gendarmerie Search and Rescue (gsr) Units; an Analysis of Efficiency in Disaster Response
    (Pergamon-elsevier Science Ltd, 2024) Abdulvahitoglu, Adnan; Varu, Danismet; Macit, Irfan; Vural, Danisment
    Disasters, referred to as events that result in physical, economic, and social losses for individuals and disrupt the daily activities of human communities, necessitate ongoing preparedness due to their unpredictable nature. Swift response during and after a disaster is crucial for preserving human life. Hence, it is imperative to initiate planning immediately following a disaster to ensure readiness for various tasks. Given these factors, search and rescue units must carefully select a base location that enables them to promptly reach affected areas. Disasters exhibit unique characteristics across different regions of T & uuml;rkiye. While some regions are prone to earthquakes, others face the risks of landslides, avalanches, or floods. Consequently, the required measures for disaster management vary from region to region. Nevertheless, when the term "disaster" is mentioned in T & uuml;rkiye, earthquakes often come to mind due to their frequent occurrence and significant impact. The Gendarmerie Search and Rescue (GSR) units have been actively responding to these earthquakes, renowned for their exemplary institutional discipline and working methods. This study aims to examine the operations and deployment locations of GSR units, which play a crucial role in mitigating the impact of frequent earthquakes in T & uuml;rkiye, utilizing a SWOT analysis. Additionally, a Multi-Criteria Decision Making-based mathematical model will be employed to optimize task activities and to select the most suitable facility locations for GSR units. The use of mathematical modeling in this context ensures that GSR units are strategically positioned to maximize their operational effectiveness and minimize response times. The results will be evaluated through sensitivity analysis.
  • Thumbnail Image
    Article
    Citation - WoS: 3
    Citation - Scopus: 5
    Medicine Distribution Problem Between Pharmacy Warehouse and Pharmacies
    (Springer india, 2022) Kose, Erkan; Duzenli, Berkay; Cakmak, Saliha; Vural, Danisment
    The pharmaceutical supply chain consists of supplier, distributor (pharmaceutical warehouses) and retail (pharmacists) stages. Since the costs of some pharmaceuticals are high while their shelf life is short, it is not possible for pharmacies to keep all kinds of drugs in their stocks. Instead, pharmacies maintain reasonable amounts of inventory for products with high demand, while fulfilling orders for those with low demand through pharmaceutical warehouses. In this study, the real life drug distribution problem of a pharmacy warehouse that meets demands of 186 pharmacies in 9 regions is addressed. Optimal distribution routes that minimize both the transportation time and the costs are obtained by using our two-stage optimization approach without changing the company's infrastructure. At first, the multiple traveling salesman method, which is an extension of the traveling salesman problem, is used to determine the optimal routes. In the second stage, the system is simulated to determine the most suitable travel frequencies and the savings in the number of vehicles used. The results show that, savings of 52% in vehicles used and 46% in distance traveled per day can be obtained if the developed model is applied.