2013-2014 Bahar Dönemi Lisansüstü Sunumları

DEPARTMENT OF LOGISTICS MANAGEMENT

GRADUATE PRESENTATIONS

June 13th, 2014, Friday

12:30-16:30, D021

Presentation Program

12:30-12:50 The Role of Political Disputes on Logistics system: The case of Turkish Republic of North Cyprus

        Cenk ÇAYPINARLI

12:50-13:10 Optimizing vehicle routes for Ege Ulasim

        Emrullah Arif KOÇ

13:10-13:30 Reducing Fuel Consumption and Emissions on a Shipping Route with Speed Optimization

        Cansu KASAPOĞLU

13:30-13:50 Global, Technological, Commercial and Sustainability Issues Driving Technical Textile Industry  in Turkey

        Aslı KOCAMANLAR AKÇAY

13:50-14:00 Break

14:00-14:20 Green Logistics Activities of a 3PL Company: A case study

        Seren SONGÜR

14:20-14:40 Evaluating the Marketing Strategies for Logistics Services in Turkey

        Ebru ELİBOL

14:40-15:00 On a Variant of Periodic Vehicle Routing Problem

        Okan ALTINKÖK

15:00-15:20 Customer Relationship Practices in B2B Market: The Case of İz-Metal

        Naz ARMAN

15:20-15:30 Break

15:30-15:50 The Usage of Outsourcing on Logistics Activities at Industrial Companies

        İrfan AŞKIN

15:50-16:10 Shipment Consolidation and Dispatching with Cross-Docks

        Sinem TOKÇAER

16:10-16:30   Service Failure and Recovery in Service Supply Chains  

        Cansu YILDIRIM

Abstracts

The Role of Political Disputes on Logistics system: The case of Turkish Republic of North Cyprus

Cenk ÇAYPINARLI

Advisor: Işık Özge YUMURTACI

This study focused on the political disputes effect in state's logistic systems. The role of political disputes changes according to it's types in trade economy. Dispute settlement directly effect welfare of economy which is also a main factor for logistics in a state. For that reason understanding political disputes resources between countries is important.  Near this, interaction of logistics and economy is to be specified by from the view of politics in this article. This situation actually named as  'domino effect' between political disputes, economy and logistics capabilities or infrastructure of a state. In the case part of an article, Turkish Republic of North Cyprus was a current example for article. State's historical background is determinant on it's economical point of our time. A political pressure and embargos that applied by international organizations and countries to Turkish Republic of North Cyprus was declerated by regulations and this regulations abort improvement of logistics infrastructure and capabilities of the state. In last part, I interpret the role of political disputes on state's logistics systems from the case of Turkish Republic of North Cyprus.

Optimizing vehicle routes for Ege Ulasim

Emrullah Arif KOÇ

Advisor: Burcu ÖZÇAM ADIVAR

In this study, we review the literature for vehicle routing problems (VRP) and implement several heuristics are implemented to find the best routes for Ege Ulasim Company.  Izmir-Karabaglar region is analyzed in order to collect data for forty customers with both delivery and pickup operations. The optimization of  vehicle routes plays a vital role in the operations of company. The routes that determined by the drivers’ knowledge and experience had been followed by the company for so many years which had not provided with the optimum results. The data is gathered from customers, routes, managers of the vehicles, fuel stations, accounting department and the map of the region. After all the data analyzed, nearest neighborhood and a saving heuristic had been applied. In conclusion, the optimized routes of all six vehicles utilized in Karabaglar region were determined; and communication methods to divert or to add an extra vehicle in case of unexpected delivery requests were prepared. As a result of this project, route performances will be measured throughout the year with the hope of theory meeting the expectations in the real World.

Reducing Fuel Consumption and Emissions on a Shipping Route with Speed Optimization

Cansu KASAPOĞLU

Advisor: Burcu ÖZÇAM ADIVAR

Maritime transportation is the most preferable transportation mode due to large capacity without overdarft restrictions, reliability and low cost. According to Enis Kayserilioğlu(İstanbul Chamber of Commerce,2004) maritime transportation is 14 times cheaper than airway, 7 times cheaper than highway and 3.5 times cheaper than railway. For these reasons, maritime transportation is the best transportation system in the world accounting 90% of the global trade.  Increased volumes with ever expanding ship capacities draw the researchers’ attention to environmental concerns including emission reductions and reduced fuel consumption in maritime transportation. There exist many research studies in the liteture focusing on reduction of  the international maritime transportation emission rates by optimizing ship routing, scheduling and sailing speeds. The aim of this study is to review the existing studies in the literature and to develop a a new model and to implement it with a liner shipping company in Izmir.

Global, Technological, Commercial and Sustainability Issues Driving Technical Textile Industry  in Turkey

Aslı KOCAMANLAR AKÇAY

Advisors: Burcu ÖZÇAM ADIVAR and Semra TUNALI

Technical textile involves a variety of materials and products which are produced primarily for their functional properties rather than their aesthetic characteristics. Technical textiles which are also known as  industrial textiles support many industries including construction, health  care, automative and etc. Similar to the recent trend in the World, technical textile in Turkey is also a fast growing sector of textile industry. The objective of this study is two-fold: first to overview the global, technological, commercial and sustainability issues driving the technical textile Industry in Turkey and next, to project the strengths and weaknesses of Turkish technical textile industry in the global economy.

Green Logistics Activities of a 3PL Company: A case study

Seren SONGÜR

Advisor: Bengü SEVİL

Traditional logistics activities should be executed more consciously for all the economic, social and environmental issues in terms of sustainability. Today, there is a certain sensitivity for greenness. Unfortunately, significant problems such as, global warming and carbon emission level indicate that the precautions taken are not sufficient. Companies can gain more competitive advantage compared to their rivals by performing green strategies. The purpose of this study is to examine the green logistics activities (e.g. freight transportation, warehousing, reverse logistics, etc.) of a leading 3PL company in order to evaluate the company's cost and image related advantages. The findings will provide insight for the benefits of green logistics applications in the industry.

Evaluating the Marketing Strategies for Logistics Services in Turkey

Ebru ELİBOL

Advisor: Bengü SEVİL

Abstract to be added

On a Variant of Periodic Vehicle Routing Problem

Okan ALTINKÖK

Advisors: Ahmet CAMCI and Özgür ÖZPEYNİRCİ

In vehicle routing problem (VRP), a set of vehicles depart from one or more depots, visit customers and finally return to the depot(s). Generally, VRP aims to minimize the total distance of the vehicles’ routes and to decrease the transportation costs. In some cases, minimizing the number of vehicles may be the objective of VRP. Moreover, VRP protects the environment by decreasing the carbon emission. In the last decades, the importance of supply chain management and distribution channels has increased and in consequence, firms started to give more importance to VRP.

Periodic vehicle routing problem (PVRP) is a variant of the classical VRP. PVPR is based on visiting customers once or more in a given period. The problem decides the customers to be visited and the routes for each day in the period. In general, the goal is to minimize the total length of the routes. Organizing the visit days properly provides an important advantage to decrease costs and the number of vehicles.

In our problem the customers are required to be visited by a different type of vehicle in the following day of a regular customer visit. One can consider the first customer visit as collection of demand information and the second customer visit as delivery of goods. The first type visit is realized with small scale, fast and time capacitated vehicles, whereas the second type visit is realized with relatively large scale, slow and physical capacitated vehicles. Hence using the same routes for the consecutive days might not be possible.

Exact solution method and its application on toy examples will be presented. Also, heuristic methods, which are developed for periodic vehicle routing problems, in literature, and future works will be discussed.

Customer Relationship Practices in B2B Market: The Case of İz-Metal

Naz ARMAN

Advisor: Işık Özge YUMURTACI

The term Customer Relationship Management (CRM) started to be used in 1990s and it is a customer focused relationship management which aims to identify, establish, maintain, and enhance long lasting relationships with customers.

From the point of view of CRM which helps companies to develop strategies to understand customer needs and behaviors and maintain to develop stronger relationships with customers, in this case study you will read what is Customer Relationship Management is about, how iz-metal applies CRM and how they behave to their customers when they face with conflicts. As being an area sales representative employee in iz-metal I will analyse my article according to quantitative research by adhering Qualitative research’s characteristics aims, which relate to understanding some aspect of conflicts me, my manager and my collegues face during our daily life, and I will implement qualitative research’s methods which will (in general) generate words, rather than numbers, as data for analysis.  

The Usage of Outsourcing on Logistics Activities at Industrial Companies

İrfan AŞKIN

Advisor: Işık Özge YUMURTACI

Today establisments are in a very big global competition. From this they must give great effort for making their function continuous and for having a good place in the market. With this aim in available conditions they are making their structure suitable. Outsourcing is giving possibility as a strategic management vehicle. Establishments have tandency to make outsource couse of focus to their basic function. They give out other functions from their basic functions to develope their competition structure. In addition to outsource decreasing costs, share in risks, developing quality, making elastic structure ets helps to ıncrease performance of establishments.

Because of increasing competition and as a result of this, decreasing profit ratio, logistics became very important. According to the current situation of the market, in order to answer the needs, to reduce inventory, to fasten the transportation period, and to shorten the distances; logistics began to play important role to increase customer satisfaction and reduce costs.

To focus on their core competincies, and to gain a difference among their rivals, firms began to outsource their logsitics functions. With the help of outsourcing logistics functions, firms have a chance to effectively use their time and resources. In this study, it has been evaluated whether outsourcing logistics affects the performance of the or not, while firms are trying to minimize their costs and maximize their performance.

The aim of this study effects on efficiency using of outsourcing in the industrial companies.

Shipment Consolidation and Dispatching with Cross-Docks

Sinem TOKÇAER

Advisors: Ahmet CAMCI and Özgür ÖZPEYNİRCİ

Long haul and international freight transportation is a highly competitive market, where the international freight forwarder companies (IFFC) have to deliver the best service with low prices. In order to meet this challenge, the IFFC mostly establish their own consolidation systems to achieve economies of scale and efficient use of the owned and rented vehicles. Additionally, most of the IFFC use cross-dock terminals in the visited country in order to reduce the travelling time of the vehicles.  In this study, we introduce the business environment of IFFC and provide a literature review on shipment consolidation and dispatching problem (SCDP) and other related problems. We also propose an extended SCDP model that includes the decisions on consolidation of orders, departure date and route of the vehicles and the intermediate stops on the routes. Moreover, the model allows the orders to be delivered either by vehicle or using a cross-dock. The proposed model is tested on randomly generated instances and computational difficulties are defined considering different criteria. Additionally, some small illustrative real life instances are solved and results show that significant savings are possible through proposed model.

Service Failure And Recovery in Service Supply Chains

Cansu YILDIRIM

Advisors: Öznur YURT YAŞAR and Bengü SEVİL OFLAÇ

The way of maintaining good relationships with customers became an important field of interest both for academicians and practitioners due to the increasing emphasis on service orientation and consumer awareness. However, although service firms focus on the quality and the excellence of service operations in order to develop and maintain profitable and loyal customer base, service failures are still inevitable in services industries because the delivery of service depends on many factors such as employee attitudes or customers’ behaviour. These failures, if not remedied, may result with customer dissatisfaction, negative word-of-mouth, decreased customer loyalty which means decreased profits. Therefore, developing effective service recovery policies has become another important focus for both academicians and practitioners. Although, service failures and recovery has been well-studied in several services such as banking and restaurants, it has not yet been studied from a service supply chain perspective. Thus, the aim of this study is to find how overall customer satisfaction and repurchase intentions are affected by a service failure and recovery done by diverse partners in the service supply chain.