Fahri Vatansever

Integrated Knowledge-Based System for Machine Design

An integrated design system (IDS) approach has been developed to integrate various stages of the mechanical design process, including rapid prototyping. The system consist, of design, analysis, calculation, rapid prototyping, and library modules, and it blends artificial intelligence methods, CAD-CAM, and technical computing packages into a single environment. The system has been applied for the design of one-stage gearbox with helical gear. In this case study, all stages of the design process are carried out by using IDS.

GÜNCEL METASEZGİSEL ALGORİTMALAR İÇİN KAOS TABANLI YAKLAŞIMLAR

Hesaplama teknolojilerindeki hizli gelismelerle orantili olarak, optimizasyon problemlerinin cozumunde evrimsel/sezgisel/metasezgisel algoritmalardan bircok alandaki uygulamalarda siklikla faydalanilmaktadir. Gunumuzde, yeni algoritmalar gelistirilmekte ve mevcut algoritmalara yenilikler uygulanmaya devam edilmektedir. Bu calismada, son zamanlarda gelistirilmis olan metasezgisel algoritmalardan olan: Geri Izleme Arama (BS), Gri Kurt Optimizasyon (GWO) ve Girdap Arama (VS) algoritmalarina kaos tabanli modifikasyonlar onerilmis ve algoritmalarin, kiyaslamalarla detayli analizleri gerceklestirilmistir. Onerilen yaklasimlar, algoritmalarin cozumlerini gelistirmek icin islemlerinde kullandiklari bazi rassal degiskenler yerine, kaos haritalarina dayanan yeni degiskenlerin uretilmesi temeline dayanmaktadir. Bunun yaninda, kaos tabanli bu degiskenler kullanilarak algoritmalarin optimizasyon surecinde kullandiklari yapisal islemlerinde modifikasyonlar gerceklestirilmektedir. Algoritmalarin performanslari; istatistiksel ve yakinsama hizlari acisindan, iki yonlu olarak analiz edilmektedir. Kaotik haritalara dayanan yaklasimlarin, orijinal algoritmalar uzerinde daha iyi veya en azindan karsilastirilabilir sonuclar urettigi, gerceklestirilen deneylerde gosterilmistir.

e-Signals&Systems: A web-based educational tool for signals and systems

Computers are widely used for educational purposes. Multimedia tools and simulations are mostly preferred for learning especially hard and complex structures in technical field and hardly realized experiments in laboratory environment. Besides, supporting theoretical knowledge with practical applications is crucial in engineering education. But, effects of negative conditions such as hardware deficiency (experimental gadgets, measuring instruments, etc.) in education environment, high number of students, less number of educators can be diminished with concepts which are distance education, computer‐aided education, etc. In this study, web‐based educational tool which is oriented to signals and systems subjects/courses is realized. This tool provides learning of signals and systems subjects with its subject descriptions, solved/unsolved problems, animations, simulations, interactive simulators, real‐time applications, general exams, online communication/support, and new educational strategy in easy, simple, and effective way. Usability and educational contribution of realized study was inspected with questionnaires which were filled anonymously by 110 students in Uludag University and assessed according to SUS and Likert scales.