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            <front>

                <journal-meta>
                                                                <journal-id>demiryolu mühendisliği</journal-id>
            <journal-title-group>
                                                                                    <journal-title>Demiryolu Mühendisliği</journal-title>
            </journal-title-group>
                            <issn pub-type="ppub">2149-1607</issn>
                                        <issn pub-type="epub">2687-2463</issn>
                                                                                            <publisher>
                    <publisher-name>Demiryolu Mühendisleri Derneği</publisher-name>
                </publisher>
                    </journal-meta>
                <article-meta>
                                        <article-id pub-id-type="doi">10.47072/demiryolu.1187884</article-id>
                                                                <article-categories>
                                            <subj-group  xml:lang="en">
                                                            <subject>Industrial Engineering</subject>
                                                    </subj-group>
                                            <subj-group  xml:lang="tr">
                                                            <subject>Endüstri Mühendisliği</subject>
                                                    </subj-group>
                                    </article-categories>
                                                                                                                                                        <title-group>
                                                                                                                        <trans-title-group xml:lang="en">
                                    <trans-title>Floyd-Warshall Algorithm in Shortest Path Optimizations: Example of Logistics Centers</trans-title>
                                </trans-title-group>
                                                                                                                                                                                                <article-title>En Kısa Yol Optimizasyonlarında Floyd-Warshall Algoritması: Lojistik Merkezler Örneği</article-title>
                                                                                                    </title-group>
            
                                                    <contrib-group content-type="authors">
                                                                        <contrib contrib-type="author">
                                                                    <contrib-id contrib-id-type="orcid">
                                        https://orcid.org/0000-0003-3805-1746</contrib-id>
                                                                <name>
                                    <surname>Keskin</surname>
                                    <given-names>Bekir</given-names>
                                </name>
                                                                    <aff>TCDD Genel Müdürlüğü</aff>
                                                            </contrib>
                                                    <contrib contrib-type="author">
                                                                    <contrib-id contrib-id-type="orcid">
                                        https://orcid.org/0000-0002-3662-6190</contrib-id>
                                                                <name>
                                    <surname>Özcan</surname>
                                    <given-names>Evrencan</given-names>
                                </name>
                                                                    <aff>KIRIKKALE ÜNİVERSİTESİ</aff>
                                                            </contrib>
                                                                                </contrib-group>
                        
                                        <pub-date pub-type="pub" iso-8601-date="20230131">
                    <day>01</day>
                    <month>31</month>
                    <year>2023</year>
                </pub-date>
                                                    <issue>17</issue>
                                        <fpage>82</fpage>
                                        <lpage>92</lpage>
                        
                        <history>
                                    <date date-type="received" iso-8601-date="20221012">
                        <day>10</day>
                        <month>12</month>
                        <year>2022</year>
                    </date>
                                                    <date date-type="accepted" iso-8601-date="20221103">
                        <day>11</day>
                        <month>03</month>
                        <year>2022</year>
                    </date>
                            </history>
                                        <permissions>
                    <copyright-statement>Copyright © 2014, Demiryolu Mühendisliği</copyright-statement>
                    <copyright-year>2014</copyright-year>
                    <copyright-holder>Demiryolu Mühendisliği</copyright-holder>
                </permissions>
            
                                                                                                <trans-abstract xml:lang="en">
                            <p>Logistics centers are important facilities which served possible transportation methods together and and carried out activities in harmony with each other such as transportation, storage, handling, distribution, consolidation, customs clearance, sorting, import, export and transit transactions, insurance and banking, infrastructure services, consultancy and production, etc. Due to the continuous demand for freight, freight transportation must be realized uninterrupted, in the shortest way, and optimal in terms of fuel consumption and transportation time. In this study, the problem of transportation of freight trains to logistics centers by the shortest route is discussed. When the literature on logistics villages is scanned; The contributions of logistics centers to the logistics sector have been examined, their strengths and weaknesses have been tried to be revealed, and studies on suggestions for effective and efficient operation have been observed. But in this study; with an engineering applications approach to the subject, it is aimed to obtain the most appropriate result for the route selection among the logistics centers by including twelve logistics centers operating throughout the country as well as seven logistics centers that are in the construction and tender stages, in the scope of the study. In generally the application area of the shortest path problems is to determine the shortest distance between the points in a network, the Floyd-Warshall Algorithm is preferred in this study in terms of determining the shortest path between any two nodes in the network. For this purpose, a graph consisting of a total of 33 nodes was created for the national railway network and the Floyd-Warshall algorithm was coded in the Python programming language to calculate the shortest route and the shortest route were determined between a total of nineteen logistics centers.</p></trans-abstract>
                                                                                                                                    <abstract><p>Lojistik merkezler taşımacılık, depolama, elleçleme, dağıtım, gümrükleme, ayrıştırma, ithalat, ihracat ve transit işlemler, sigorta ve bankacılık, altyapı hizmetleri, danışmanlık ve üretim vb. faaliyetlerin birbiriyle uyumlu bir şekilde yürütülmesine ve olası taşıma yöntemlerinin bir arada sunulmasına hizmet eden önemli tesislerdir. Yük talebinin sürekli olması nedeniyle yük taşımacılığının da kesintisiz, en kısa yoldan, yakıt tüketimi ve taşıma süresi açısından da optimal bir şekilde gerçekleştirilmesi gerekmektedir. Bu çalışmada yük trenlerinin lojistik merkezlere en kısa yoldan ulaşması problemi ele alınmıştır. Literatürde lojistik köylerle ilgili yazın taraması yapıldığında; lojistik merkezlerin, lojistik sektörüne yapmış olduğu katkılar incelenmiş, güçlü ve zayıf yönleri ortaya konmaya çalışılmış, etkin ve verimli çalışması hakkında önerilerle ilgili çalışmalar gözlemlenmiştir. Fakat bu çalışmada; konuya mühendislik uygulamaları yaklaşımıyla, ülke genelinde faaliyet gösteren on iki lojistik merkezin yanı sıra yapım ve ihale aşamasında yer alan yedi adet lojistik merkez de çalışma kapsamına dâhil edilerek, lojistik merkezler arasında güzergâh seçimi için en uygun sonuç elde etme amacı güdülmüştür. En kısa yol problemlerinin uygulama alanı genellikle bir şebekede/ağda yer alan noktalar arasında en kısa mesafenin belirlenmesi olup, çalışmada şebekedeki herhangi iki düğüm arasındaki en kısa yolun belirlemesi açısından Floyd-Warshall Algoritması tercih edilmiştir.  Bu amaçla ulusal demiryolu ağı için toplam 33 düğümden oluşan bir çizge oluşturulmuş ve en kısa yolun hesaplanması için Floyd-Warshall algoritması Python programlama dilinde kodlanarak çözülmüştür ve toplam on dokuz adet lojistik merkez arasında en kısa yol/yollar tespit edilmiştir.</p></abstract>
                                                            
            
                                                                                        <kwd-group>
                                                    <kwd>Demiryolu taşımacılığı</kwd>
                                                    <kwd>  En kısa yol</kwd>
                                                    <kwd>  Lojistik merkez</kwd>
                                                    <kwd>  Floyd-Warshall</kwd>
                                            </kwd-group>
                            
                                                <kwd-group xml:lang="en">
                                                    <kwd>Railway transportation</kwd>
                                                    <kwd>  Shortest path</kwd>
                                                    <kwd>  Logistics center</kwd>
                                                    <kwd>  Floyd-Warshall</kwd>
                                            </kwd-group>
                                                                                                                                        </article-meta>
    </front>
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