JournalTOCs

Journal of Transportation and Logistics
Number of Followers: 3

This is an Open Access Journal

Open Access journal
ISSN (Print) 2459-1718 - ISSN (Online) 2459-1718
Published by İstanbul Üniversitesi

[18 journals]

Investigation of the Effect of Rail Passenger Transport on Air Passenger
Transport in Intermodal Transport: Samsun and Trabzon Example
- Authors: Süleyman KÖSE
  Abstract: Passenger transport demand is increasing rapidly with the globalization process. In order to meet the continuous increasing demand for transport services, it is necessary to combine all transport modes and technologies efficiently. In this regard, the integration of air transport, which is the fastest mode of transport, and rail transport, which is the safest mode of transport, is seen as the most ideal way out. In this context, the city of Trabzon was selected and it how the amount of air passenger transport will change if there is rail transport has been investigated. Within the scope of the study, regression analysis was performed to investigate the effect of rail passenger transportation on the air passenger transportation of Samsun, which was selected as a sample. Afterwards, the impact rates obtained from Samsun were included in the regression analysis results for Trabzon air passenger transportation. As a result of the analysis, it was determined that the effect of rail passenger transportation on Samsun airport passenger transportation was 1.44% in 2019, this effect will increase regularly to 21.03% in 2040. Also, it is estimated that there will be an increase of 65,142 passengers at Trabzon Airport in 2019 with the effect of rail transportation.
  PubDate: Sun, 31 Oct 2021 00:00:00 +030
Evaluating Occupational Health and Safety Applications: A Framework for
Turkish Container Ports
- Authors: Seyhun COBAN; Hakan DEMİREL, Umur BUCAK
  Abstract: With the COVID-19 pandemic, sky-high demand for long-distance shipping and remaining incapable of other modes to comply with maritime transport for meeting demand caused port congestion in vital hubs. The situation increased speed pressure that exists for so long on ports. In the meantime, operational speed requirements, port congestions, spread of port services threaten occupational health and safety in port areas. To cope with this risk many regulations and measures were taken by port authorities. In this study, it is aimed to determine the priority levels of the OHS rules applied to prevent possible risks and accidents in container ports. It has also been attempted to evaluate which factors are more effective in the implementation of these rules. Thus, occupational health and safety rules applied in Turkish container ports were determined and evaluated by experts. By this means, these applications were prioritized in terms of their significance levels. In the scope of these applications, prominent factors that threaten occupational health and safety were approached. Thus, a framework related to occupational health and safety rules applied in Turkish container ports and factors threaten them was designated. This framework was analysed and the results brought employee awareness into the forefront to establish reliable occupational health and safety system in Turkish container ports.
  PubDate: Sun, 31 Oct 2021 00:00:00 +030
Determining Passenger Profile According to Types of Transport in Konya: A
Clustering Analysis
- Authors: Nilüfer CANÖZ; Zeynep ERGEN IŞIKLAR, Ahmet ERTEK
  Abstract: Since the existence of humanity and especially the invention of the wheel, ensuring the movement of persons, objects, living and non-living beings between two points in an economical, ergonomic, fast and safe manner has been the subject of both theoretical and applied research. Today, relevant ministries and local administrations are working on the continuous improvement of transportation infrastructure and facilities. Alternative transportation possibilities about the transportation of people which are developed by taking into account the geographical characteristics, increase the competition in this area day by day. Transportation companies develop strategies directly for the customer in order to be successful in the competitive environment. In this study, the travel preferences and demographic structure of travellers were associated with a cluster analysis through the types of transportation that exist in the province of Konya. The survey study was analyzed with the SPSS program cluster analysis. As a result it was concluded that when the participants were grouped according to some demographic variables, it was seen that the most dominant modes of transportation were road and air. On the other hand because of Konya’s conditions like education / health and business (industry), road, air and railway transportations are preferred.
  PubDate: Sun, 31 Oct 2021 00:00:00 +030
Non-Traditional Innovative Warehouse Layout Types
- Authors: Ayca ÖZCEYLAN; Mehmet TANYAŞ
  Abstract: With the increasing variety of logistics operations, suppliers, and business models, warehouses are increasingly playing an integral role in supply chains. For this reason, warehouses must provide flexibility, accessibility, and efficient functionality more than ever before. Unfortunately, most businesses still use traditional warehouse layout models and focus on warehouse costs rather than the layout. However, if warehouse operations are more effectively performed, less energy will be consumed, leading to increased flexibility in the future. It is necessary to focus on more modern, innovative, and nontraditional warehouse layouts rather than the traditional layout models. Aisle designs that provide access to products in nontraditional innovative warehouse layouts are different from traditional warehouse aisle designs. The main motivation of the nontraditional warehouse design studies is to shorten access distances to the product to reduce the travel time in the warehouse. Aiming to present the nontraditional innovative warehouse layouts focusing on the gaps for researchers and those in the sector, this study analyzes the nontraditional innovative warehouse layouts used or suggested both in the literature and in practice, namely the Flying-V, Fishbone, Inverted-V, Chevron, Leaf, and Butterfly aisle designs, and tries to explain each one in detail with reference to the literature.
  PubDate: Sun, 31 Oct 2021 00:00:00 +030
A Field Study on the Pharmaceutical Supply Chain Structure and Practices
in Turkey
- Authors: Hilal TÜRK; Samet GÜNER
  Abstract: Supply chain practices in the pharmaceutical industry are of great importance in terms of both the operating performance of firms and delivering the drug to the point of need under the right conditions and time. From a business perspective, many critical activities such as inventory policy, demand forecasting, and capacity planning are closely related to the decisions made in the supply chain process. However, the sensitive structure of drugs, its unique monitoring, storage, and transportation requirements, and the necessity of delivering them to the point of need just in time make the make the proper functioning of pharmaceutical supply chain essential for human life. In this study, the planning and operation performances of pharmaceutical supply chain members, which include producers, 3PL service providers, distributors, and pharmacies, were evaluated comparatively by conducting a field study. Additionally, the characteristics, relationships, and partnerships within the pharmaceutical supply chain were revealed through interviews with industry experts. Hence, the pharmaceutical supply chain structure and practices were examined in Turkey. By examining all parties of the pharmaceutical supply chain, a holistic perspective was adopted. The findings revealed that all parties in the pharmaceutical supply chain put collective efforts to provide value-added services to each other. Manufacturers face greater operational risks and uncertainty. Pharmacies can work with low stock quantities because of frequent shipments provided by distributors; however, this provision has a detrimental impact on the inventory costs of distributors.
  PubDate: Sun, 31 Oct 2021 00:00:00 +030
Mathematical Models for Milk Dispatching Problem
- Authors: Damla YÜKSEL; Damla KIZILAY, Hande ÖZTOP, Sinem ÖZKAN
  Abstract: This study considers the milk dispatching problem for a small-sized distribution company. The milk dispatching problem can be seen in many real-life applications. Under a social responsibility project, several organizations, including companies and municipalities, distribute bottled milk for children to primary schools and impoverished families without any charge. These companies generally use capacitated vehicles for distribution and should consider available hours of the schools as well as the families. The planners generally want to minimize their expenses, such as fuel oil and storage costs. Under those restrictions, the problem turns out to be a capacitated vehicle routing problem with time windows (CVRPTW). One of the main objectives is to minimize total traveled distance considering the vehicle type to reduce the fuel consumption of the vehicles. Another objective is to minimize serving the customers late to reduce the storage cost of undelivered milk. To achieve those objectives, we formulated mixed-integer linear programming (MILP) and constraint programming (CP) models for the problem. To verify and compare our mathematical models, we modified well-known instances from the literature, including problem-specific parameters. The comprehensive computational results show that both models are very competitive for the problem. However, it should be noted that the MILP model outperforms the CP model in terms of solution quality and CPU time for the instances with a long planning horizon.
  PubDate: Sun, 31 Oct 2021 00:00:00 +030