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On Hofstadter Heart Sequences
(Wiley-Hindawi, 2017)The Hofstadter Q-sequence and the Hofstadter-Conway $10000 sequence are perhaps the two best known examples of meta-Fibonacci sequences. In this paper, we explore an unexpected connection between them. When the Q-sequence ... -
An exploration of solutions to two related Hofstadter-Huber recurrence relations
(Pergamon-Elsevier Science Ltd, 2020)In this study, we explore the properties of certain solutions of two Hofstadter-Huber recurrence relations. The first is Hofstadter's V-recurrence, which is defined by the nested recurrence relation V(n) = V(n - V (n - 1)) ... -
On a conjecture about generalized Q-recurrence
(Sciendo, 2018)Chaotic meta-Fibonacci sequences which are generated by intriguing examples of nonlinear recurrences still keep their mystery although substantial progress has been made in terms of well-behaved solutions of nested ... -
On a Generalization of Hofstadter's Q-Sequence: A Family of Chaotic Generational Structures
(Wiley-Hindawi, 2018)Hofstadter Q-recurrence is defined by the nested recurrence Q(n) = Q(n - Q(n - 1)) + Q(n - Q(n - 2)), and there are still many unanswered questions about certain solutions of it. In this paper, a generalization of Hofstadter's ... -
The key for success in enterprise information systems projects: development of a novel ERP readiness assessment method and a case study
(Taylor & Francis Ltd, 2020)ERP projects have a significant cost-share with high failure-rates. When the failure factors of ERP projects are evaluated, it is noteworthy that enterprises do not pay enough attention to ERP Readiness and moved directly ... -
Multi-Purpose Tugboat/Aht Selection For Northern Caspian Sea With Topsis and Moora Methods
(2019)A large part of the world energy requirement is provided from offshore oil and gas fields. The Kashagan site in the Northern Caspian Sea has one of the largest known reserves and marine operations are important for the ... -
On the Selection of Ship Wastewater Treatment Plant Incorporating Analytical Hierarchy Process With 0-1 Goal Programming
(2019)As a result of the continuous pollution of the air, seas and soil, the deterioration of the natural equilibrium can be felt severely. Therefore, the prevailing vision of sustainable environment is frequently mentioned in ... -
On a recursively defined sequence involving the prime counting function
(University of Waterloo, 2021)We prove some properties of sequence A335294 from the On-Line Encyclopedia of Integer Sequences, defined by an = ?(n) - ?(?n-1 k=1ak), where ?(x) is the number of primes ? x. In particular we show that the sequence (an) ... -
Yard block assignment, internal truck operations, and berth allocation in container terminals: introducing carbon-footprint minimisation objectives
(Palgrave Macmillan Ltd, 2021)It is of increasing importance to carry out port terminal operations in an environmentally sustainable way. We approach the yard block assignment and internal transportation problem in a way that establishes an optimum ... -
Yard block assignment, internal truck operations, and berth allocation in container terminals: introducing carbon‑footprint minimisation objectives
(Palgrave Macmillan Ltd, 2021)[No Abstract Available] -
Development of a multidimensional performance evaluation model for container terminals at Marmara Sea
(Elsevier, 2020)The continuous success of container terminals in a highly competitive environment depends on their ability to compendiously evaluate their activities and to produce effective solutions for the required areas. At this point, ... -
Determining Turkish Major Ports' Potential in Logistics Clusters Perspective: A Quantitative Approach
(Future Acad, 2019)The presence of logistics clusters makes an important contribution to the effectiviness of the logistics operations, so the development of national economies as well. However, establishing a cluster is a very costly and ... -
Efficiency and logistic capabilities of commercial seaports
(Piri Reis Üniversitesi, 2017)Bu çalışmada, limanların katma değer yaratan komplike bir lojistik ve tedarik zinciri birimi olarak kabul edilmesinden yola çıkılarak; limanların operasyonel ve finansal etkinlikleri ile birlikte liman faaliyetlerinin ... -
The transition of shipping companies from family business to corporate governance
(Piri Reis Üniversitesi, 2020)Denizcilik piyasasında aile şirketleri asırlardır önemli bir rol oynamıştır. Son 20 yılda armatörlükte, aile şirketlerinin payı giderek azalmaktadır. Bu çalışmada, denizcilik sektöründe, kurumsallaşmanın aile şirketlerinin ... -
Additional acquisitions for Turkish watchkeeping officers to be employed onboard cruise ships
(Piri Reis Üniversitesi, 2019)Kruvaziyer endüstrisi son 20 yılda dikkat çekici bir büyüme göstermiştir. Özellikle son yıllarda, sağladığı farklı aktiviteler ve hareketlilik sayesinde, turizm sektöründeki tüketicilerin ilgileri kruvaziyer turizmine ... -
Analysis of OCIMF SIRE VIQ inspection observations with fuzzy DEMATEL and fuzzy TOPSIS methods: The most common observations and solution suggestions
(Piri Reis Üniversitesi, 2020)Tarih öncesi çağlardan beri deniz taşımacılığı her zaman dünya ticaretinin önemli bir kısmından sorumlu olmuştur. Şu anda dünya ticaretinin %90'ı deniz yoluyla gerçekleştirilmektedir. Ayrıca büyük miktarda hammadde taşıma ... -
A computational perspective on meta-Fibonacci recurrence relations
(Piri Reis Üniversitesi, 2021)Bu doktora tezinde, bir bilgisayar cebir sistemi olan PARI/GP ile sağlanan detaylı hesaplamalı araştırmalar sayesinde meta-Fibonacci tekrarlama ilişkileri kavramını yeni bir yaklaşımla keşfediyoruz. İç içe geçmiş tekrarlama ... -
An analysis of the relation between the commodity prices and freight rates
(Piri Reis Üniversitesi, 2018)Uluslararası ticaret hacmi, küreselleşme ile beraber geçtiğimiz 20 yılda oldukça güçlü bir ivme kazanmıştır. Küresel ticaretin hacim olarak %80'inin; değer olarak ise %70'inin denizyolu taşımacılığına konu olduğu hususu ... -
The effects of underwriting and reserving techniques in insurance of ship financing
(Piri Reis Üniversitesi, 2017)Bu tezin konusu, gemi finansman sigortasında aktüerya ve karşılık ayırma tekniklerinin sigorta prim hesaplamasına etkisi ve finansman sigortasının karşılaştığı finansal risklerin analiz edilmesidir. Aktüerya biliminin çok ... -
Evaluation of design parameters on the basis of survivability of surface combatant ships
(Piri Reis Üniversitesi, 2019)Donanma gemilerinin inşasının çok fazla zaman ve kaynak gerektiren doğasından dolayı, 1970 ve 1980?lerden itibaren hayatta kalınabilirlik (beka) birincil dizayn hususlarından biri haline gelmiştir. Bu tezin hedefi, savaş ...
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