KESİKLİ HARMONİ ARAMA ALGORİTMASI İLE OPTİMİZASYON PROBLEMLERİNİN ÇÖZÜMÜ: LİTERATÜR ARAŞTIRMASI

It is usually assumed the variables which are used in the optimization problems are continuous variables. However, the variables have discrete or integer values in many real life practices. Considering discrete integer variables in the optimization problems makes the problems more complex. There are few methods to solve these type of problems. The Harmony Search Algorithm inspired by improvisation of musical harmony and a recent variant of it, The Discrete Harmony Search Algorithm were investigated. It is thought that The usage of the Discrete Harmony Search Algorithm is going to provide a good alternative to solve the optimization problems.Genellikle optimizasyon problemlerinde kullanılan değişkenlerin sürekli değişkenler olduğu kabul edilmektedir. Ancak gerçek hayatta çoğu problemin değişkenleri kesikli veya tam sayı değişkenler şeklindedir. Optimizasyon problemlerinde kesikli tam sayı değişkenlerin dikkate alınmasıyla karmaşıklık daha fazla artmaktadır. Bu tür karmaşık problemlerin çözümünde az da olsa çeşitli yöntemler mevcuttur. Bu çalışmada bir müzik eserinde oluşan harmoniden esinlenilerek geliştirilen Harmoni Arama Algoritması ve henüz yeni bir uygulaması olan Kesikli Harmoni Arama Algoritması ile ilgili yapılan araştırmalar incelenmiştir. Kesikli Harmoni Arama Algoritması kullanılarak optimizasyon problemlerinin çözümü bu konuda bir alternatif sağlayacaktır

ANALİTİK HİYERARŞİ PROSES YÖNTEMİ İLE RÜZGAR TÜRBİN SEÇİMİ

In this study, the criteria that need to be considered for the selection of an appropriate wind turbine brand were settled based on a predetermined location of wind turbine. A hierarchical structure was established and Analytical Hierarchical Process (AHP) method was applied on the decision of selection for the best wind turbine among candidate turbine brands by means of this structure. Results obtained by this way were evaluated and the turbine which is selected among alternative turbine brands was investigated in detail.Bu çalışmada kuruluş yeri önceden tespit edilen bir rüzgâr türbini için uygun türbin markası seçiminde  dikkat  edilmesi  gereken  kriterler  belirlenmiştir.  Kriterlere  uygun  hiyerarşik  bir  yapı oluşturulmuş ve bu yapıya göre belirlenen markalar arasından en iyi rüzgâr türbini seçim kararına, Analitik Hiyerarşi Süreci (AHS) yöntemi uygulanılmıştır. Bu yolla elde edilen sonuçlar değerlendirilmiş ve alternatif rüzgâr türbini markaları arasından hangisinin seçileceği detaylı olarak incelenilmiştir.

Using hybridized ANN-GA prediction method for DOE performed drying experiments

WOS:000526510500001Coal is an important component in the energy industry and plays a key role in energy-producing facilities. Moisture is a common condition that has a considerable impact on coal. Coal drying has long been a question of great interest in a wide range of fields. Defining parameters in the coal drying is obtained by experiments. High costs, time constraints, and repetition of an experiment are one of the most frequently stated problems with experimental works. Using qualitative methods with experiments can be more useful for identifying and characterizing the coal drying process. The purpose of this article is finding the effective parameters in the coal drying process by using a hybridized prediction method. Genetic Algorithm (GA) and Artificial Neural Network (ANN) are hybridized with each other to identify and characterize the coal drying process. GA-ANN algorithm is applied to the coal drying process to predict the moisture of coal, but it does not provide a decent result at first. Later, the Design of Experiment (DoE) methodology is performed to determine the main effects of six parameters. Two scenarios are generated because two parameters are not statistically significant. The first scenario excludes the air relative humidity parameter, and the second scenario excludes the air relative humidity and the velocity of air parameters. Following the application of the DoE method, GA-ANN reaches decent results in scenario-2

Decision tree regression model to predict low-rank coal moisture content during convective drying process

WOS:000519514800001Coal is still a significant energy source for the world. Due to the utilization of low-rank coal, drying is a key issue. There are lots of attempts to develop efficient drying processes. The most prominent method seems as thermal drying. For thermal drying processes, the most important subject is the coal moisture content change with time. In this study, convective drying experiments were utilized to develop a new model based on decision tree regression method to predict coal moisture content. The developed model gives satisfactory results in prediction of instant coal moisture content with changing drying conditions. With the decision tree depth of six, the best test results were achieved as 0.056 and 0.802 for MSE and R-2 analyses, respectively

The life of Thomas Edward Taylor, M.P., 1863-1911.

The thesis I advance for his place in the political life of this democracy is that he, essentially a self-taught man, entered the political life of the country from a strong sense of public duty and served as a spearhead for the humanitarian legislation of the Seddon Government as well as in local government. Then, I examine the reasons that impelled Taylor to enter public life and become drawn into ever widening activities. I submit that his restless energy, stirred by an intense religious experience in his youth, caused him to try to help those closest at hand. More often than not these people were drunkards. Frustrated by their continual lapses, Taylor girded himself to battle for the removal of all licences to sell liquor in the district of Sydenham. Success seemed to have been attained when a legal technicality nullified his efforts. To change the law became a necessity for him. He entered the political world and served his fellows with a much broader outlook than was first expected of him. There is evidence to support the contention that Taylor was a spearhead for the Liberals, but because of the lack of information as to the precise time Seddon became committed to any particular reform, I cannot say that Taylor provided the underlying ideas. But he did educate public opinion as to them, and saw those ideas written into the Statute Book by Seddon. But any view of Taylor as a politician is incomplete that ignores his stimulating effect upon political integrity. Friends and opponents alike agree that he followed his conception of right fearlessly and was ever alert to denounce anything that smacked of intrigue or jobbery. It is to be regretted that this work was not undertaken ten years earlier when most of those who were intimately associated with Taylor were still alive. L. M. Isitt made a collection of letters intending to write a life as Taylor, but these were destroyed by fire and the work was put aside