Browsing by Author "Guray, Cenk"

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Citation - Scopus: 4
Considering the Concept of "pervane" With Respect To Alevisim Regarding the Cultural Interactions
(Gazi Univ, Turk Kulturu ve Haci Bektas veli, 2011) Guray, Cenk; Simsek, Erdem; Department of Metallurgical and Materials Engineering; Department of Metallurgical and Materials Engineering
Besides of being an important literary symbol, the concept of "pervane" also possesses a very wide range of meanings representing the inward meanings put forward by the mystic belief systems of Anatolia. An analysis of the concept of "pervane" depending on the roots of literature and religious philosophy will be helpful to illuminate the backgrounds of Alevi and Bektasi belief systems and the Mevlevi order that had interacted with them. Also, understanding the conceptual role of the pervane term within the rites like semah and sema being aroused within these systems, makes it possible to reveal the philosophical backgrounds of these rites. Therefore the discovery of the "pervane" concept will assist to understand the relation of the "semah" and "sema" concepts with "vahdet-i mevcut and vahdet-i yucud philoshopies respectively. This approach will be beneficial in discovering very precious pieces of knowledge to denote the cultural identities and perceptions of belief and God for Anatolian people.
Citation - WoS: 11
Citation - Scopus: 26
DEMAND FORECASTING: A COMPARISON BETWEEN THE HOLT-WINTERS, TREND ANALYSIS AND DECOMPOSITION MODELS
(Univ Osijek, Tech Fac, 2017) Tirkes, Guzin; Guray, Cenk; Celebi, Nes'e; Computer Engineering; Department of Metallurgical and Materials Engineering; Industrial Engineering
In food production industry, forecasting the timing of demands is crucial in planning production scheduling to satisfy customer needs on time. In the literature, several statistical models have been used in demand forecasting in Food and Beverage (F&B) industry and the choice of the most suitable forecasting model remains a central concern. In this context, this article aims to compare the performances between Trend Analysis, Decomposition and Holt-Winters (HW) models for the prediction of a time series formed by a group of jam and sherbet product demands. Data comprised the series of monthly sales from January 2013 to December 2014 obtained from a private company. As performance measures, metric analysis of the Mean Absolute Percentage Error (MAPE) is used. In this study, the HW and Decomposition models obtained better results regarding the performance metrics.
Citation - WoS: 1
Citation - Scopus: 7
An Eternal Cycle From Sema To Semah
(Gazi Univ, Turk Kulturu ve Haci Bektas veli, 2010) Guray, Cenk; Department of Metallurgical and Materials Engineering; Department of Metallurgical and Materials Engineering
For thousands years, music has always acted as a critical guide for human beings in their journey for perceiving and identifying the nature and the super-nature. The expressive power of music had presented man both the chance of making direct relations with the nature and the hope of controlling the unseen. Therefore, the concepts of "belief and music" have been carrying this ancient relation to the present time. Within this relation it is possible to detect an intersection of musical examples with the religious symbols, forming the most decisive parts of the human memory. Based on this intersection, many religious symbols had been transmitted more effectively by the use of music and the music has been kept unaffected through the social changes over time. This study aims to trace the relation between belief and music in Anatolia, taking the concepts of semah and sema in its scope.