Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Alatas, Bilal(3)
- Cafer Kuhak(1)
- Can, Umit(1)
- Goksu, Ali(1)
- Sabanci, Serdal(1)
- Çilingir, Seda(1)
Yayınlar
- MakaleYalnız künye2021Scopus SJRQ1Production of Pectin from Lemon Peel Powder Using Ohmic Heating-Assisted Extraction Process
Çilingir, Seda; Goksu, Ali; Sabanci, Serdal
The ohmic heating process is known as homogeneous, efficient, and rapid heating. In the present study, it was aimed to analyze the extraction of pectin from lemon peel using ohmic heating, to evaluate the specific pectin production coefficient (SPPC, mg/kJ) and compared it with traditional pectin production (TPP). The extraction process was carried out at 3 different temperatures (70–90 °C), 3 different solid:liquid ratios (1:30, 1:40, 1:50 g/ml), 3 different extraction holding times (0–30 min), and a constant pH (pH 2 that adjusted with citric acid). From the results, extraction conditions affected the pectin yield. As the temperature and extraction holding time increased, the pectin yields increased. In general, the 30-min pectin yields of the ohmic heating-assisted extraction (OHAE) process were similar to the pectin yields obtained from the TPP under the same conditions. Performance evaluation of pectin production was made for 90 °C, and energy efficiency was found to be over 69% for 3 different solid to liquid ratios. It has been stated that as an alternative to the TPP method, the OHAE process can be applied.
AtıfScopus50WoS44OpenAlex53
İncele - Yüksek Lisans TeziAçık Erişim2019Kamu ve özel bankaların uygulamış olduğu performans değerlendirme sistemlerinin çalışanların iş tatmini üzerindeki etkisi
Cafer Kuhak
Bu çalışma bankalarda uygulanan performans sisteminin çalışanların iş tatmini üzerindeki etkilerinin tespit edilmesi amacıyla hazırlanmıştır. Araştırmanın uygulama alanı Tunceli ve Elazığ ilinde bulunan kamu ve özel sektör bankalardır. Bankalarda çalışan Gişe Görevlileri, Operasyon Asistanları, Operasyon Yetkilileri, Bireysel Müşteri İlişkileri Yetkilileri, Bireysel Müşteri İlişki Yetkili Yardımcıları, Ticari Müşteri İlişkileri Yetkilileri, Ticari Müşteri İlişkileri Yetkili Yardımcıları ve Şube Müdürü olarak görev yapan iş görenlere çalışmaya ilişkin bir anket formu uygulanmıştır. Sonuç olarak iş görenlerin motivasyon düzeylerinin performans seviyesine göre farklılık gösterdiği, iş görenlerin unvan, cinsiyet, yaş, kıdem ve pozisyon değişkenlerinin uygulanan performans ile yakından ilişkili olduğu tespit edilmiştir. Taşıdıkları riskler ve yoğun bir çalışma temposuyla diğer birçok sektör çalışanlarından daha ağır çalışma koşullarına sahip olan kamu ve özel banka çalışanlarının, kendilerine uygulanan performans sistemlerine ilişkin algıları ve bu algının iş tatminlerine etkileri önemli bir konu olmuştur. Bu çalışmadan elde edilen verilerin, bankacılık sektörü çalışanlarının motivasyon ve iş tatminini artırıcı önlemlerin alınmasında katkı sağlayacağı düşünülmektedir. Araştırmanın sonuçları, anket yöntemi uygulanılarak elde edilmiştir.
- MakaleAçık Erişim2017Performance comparisons of current metaheuristic algorithms on unconstrained optimization problems
Can, Umit; Alatas, Bilal
Nature-inspired metaheuristic algorithms have been recognized as powerful global optimization techniques in the last few decades.Many different metaheuristic optimization algorithms have been presented and successfully applied to different types of problems. In this paper; seven of newest metaheuristic algorithms namely, Ant Lion Optimization, Dragonfly Algorithm, Grey Wolf Optimization, Moth-Flame Optimization, Multi-Verse Optimizer, Sine Cosine Algorithm, and Whale Optimization Algorithm have been tested on unconstrained benchmark optimization problems and their performances have been reported. Some of these algorithms are based on swarm while some are based on biology and mathematics. Performance analysis of these novel search and optimization algorithms satisfying equal conditions on benchmark functions for the first time has given important information about their behaviors on unimodal and multi-modal optimization problems. These algorithms have been recently proposed and many new versions of them may be proposed in future for efficient results in many different types of search and optimization problems.
AtıfScopus12İncele - MakaleYalnız künye2012Scopus SJRQ1A novel chemistry based metaheuristic optimization method for mining of classification rules
Alatas, Bilal
When investigated carefully, chemical reactions possess efficient objects, states, process, and events that can be designed as a computational method en bloc. In this study, a novel computational method, which is robust and have less parameters than that of used in the literature, is intended to be developed inspiring from types and occurring of chemical reactions. The proposed method is named as artificial chemical reaction optimization algorithm, ACROA. In this study, one of the first applications of this method has been performed in classification rule discovery field of data mining and efficiency has been demonstrated. (C) 2012 Elsevier Ltd. All rights reserved.
AtıfWoS59OpenAlex75İncele - MakaleYalnız künye2011Scopus SJRQ1ACROA: Artificial Chemical Reaction Optimization Algorithm for global optimization
Alatas, Bilal
Heuristic based computational algorithms are densely being used in many different fields due to their advantages. When investigated carefully, chemical reactions possess efficient objects, states, process, and events that can be designed as a computational method en bloc. In this study, a novel computational method, which is more robust and have less parameters than that of used in the literature, is intended to be developed inspiring from types and occurring of chemical reactions. The proposed method is named as Artificial Chemical Reaction Optimization Algorithm, ACROA. Applications to multiple-sequence alignment, data mining, and benchmark functions have been performed so as to put forward the performance of developed computational method. (C) 2011 Elsevier Ltd. All rights reserved.
AtıfWoS340OpenAlex420İncele