Measuring logistics efficiency is important to understand the strengths and weaknesses of a country's logistics operations and to be able to do necessary improvements. A common practice in the literature is applying Data Envelopment Analysis (DEA) with World Bank's logistics performance index (LPI) values for measuring logistics efficiency of countries. While DEA is a powerful methodology for relative efficiency measurement, a more sophisticated branch of DEA models is Network DEA (NDEA), especially for processes with inner sub-processes. The purpose of this study is to present a novel NDEA model for measuring logistics efficiencies and sub-efficiencies of countries.Design/methodology/approach -This study presents a relational two-stage network data envelopment analysis model to measure relative efficiency of a country's logistics process. For the first time in literature, total logistics process of a country is divided into two sub-processes as production and service stages.Findings -Proposed Network DEA model utilizes international LPI scores and macroeconomic indicators to measure OECD countries' logistics efficiencies for bi-yearly periods between 2010 and 2018. Obtained results favors 3 countries out of 37 with high logistics efficiencies. Also, by grouping the countries in terms of development level, results show that although developed countries have better logistics outputs in terms of LPI index, most logistically efficient countries are developing economies in general.Discussion -This study with proposed NDEA model is open for further research and development. The model could be varied with different capital and labor measures, also could be improved by adding some domestic LPI or other logistics indicators.
In health tourism, an important sub-branch of the tourism sector, the increase in the number of organizations in the service industry in response to increasing demand has led institutions to transform in line with global standards to gain a competitive advantage. Today, due to the steady increase in its share in the sector, it is necessary to establish an assessment infrastructure to measure health tourism performance. This study suggests an infrastructure for determining the factors affecting health tourism. There is no widely accepted standard assessment methodology in determining criteria affecting tourism performance in the literature. However, with a standard assessment structure, it can be possible to rank the achievement of the organizations serving health tourism. Therefore, the Fuzzy DEMATEL method is used as a multi-criteria decisionmaking approach based on fuzzy logic to determine the factors affecting health tourism performance. This study contributes to the literature in terms of presenting the criteria for the assessment of the health tourism performance in a standard structure for researchers, and in which dimensions the organizations should consider their performance.
Teknolojik gelişmeler 2000’li yılların başından itibaren hızlanarak yayılmaya başlamıştır. İlerleyen süreçlerde teknolojinin yeni bir ürünü olan blokzincir teknolojisi insan hayatına girmiştir. Söz konusu teknolojinin en önemli özelliği ise Tam (Gerçek) zamanlı veri aktarımıdır. Blokzincirin dağıtık ağı sayesinde insanlar herhangi bir merkeze bağlı kalmaksızın kendilerine ait olan verilerin takibini yapabilmektedir. Blokzincir teknolojisinin ürün ve kargo teslimat takibinde kullanılması tüketicinin ürününü anlık olarak takip edebilmesine olanak sağlarken teslimat zamanının tam olarak bilmesi gün içinde zaman kullanımını daha verimli hale getirecektir. Bu çalışmanın amacı lojistik sektörüne önemli katkı sağlaması düşünülen blokzincir teknolojisine yönelik tutum, niyet ve kullanım kabulü süreçlerini incelemektir. Çalışmada yeni teknolojilerin kabulünde literatürde sıkça kullanılan Yeniliklerin Yayılması Teorisi (YYT) ve Teknoloji Kabul Modelinden (TKM) faydalanılmıştır. Araştırmada birden çok ilişkinin analizinde sıkça başvurulan Yapısal Eşitlik Modellemesi (YEM), Smart PLS 3 paket programıyla birlikte kullanılmıştır. Lojistik süreçlerde özellikle e-ticaret faaliyetlerinin son basamağı olan teslimatlarda blokzincir teknolojisinin kullanımı nihai tüketici tarafından olumlu karşılanmıştır. Teknolojiyi kendilerine uyumlu ve faydalı olarak görmeleri gelecekte bu blokzincir teknolojisinin daha yaygın bir kullanıma sahip olacağını göstermektedir.
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