Data Envelopment Analysis (DEA) is a non-parametric mathematical programming that uses multi inputs to produce multi outputs. It is investigated whether the decision making unit is effective or not. However, it has been debated for years that the results obtai…
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751 results for “Data Envelopment Analysis, Decision-Making Unit, Textile, Ready-Wear, Efficiency”
Bu çalışmada, Ultra Yüksek Moleküler Ağırlıklı (UYMA) PE-1000 plastik malzemenin abrasiv aşınma performansı incelenmiştir. UYMA, yoğunluğu 0.930–0.935 g/cm3 arasında değişen ve molekül ağırlığı 2-6 milyon seviyesinde olan bir polietilen grubudur. Yüksek molekü…
One of the materials that are increasingly used today in various engineering applications is boron steels. Though boron steels draw attentions with their superior wear characteristics, studies on the tribological properties of these materials is quite limited …
Interest in Data Envelopment Analysis (DEA) has grown in recent years. This is not surprising since DEA can be used to explore efficiency in organizations whose outputs and inputs cannot be reduce to monetary terms. In a relatively short period of time Data En…
Systems have their own specific objectives. These objectives can be listed as; high efficiency, efficiency, profit maximization, cost minimization, customer satisfaction, growth and respectability. To measure whether the system has achieved its goals, it is ne…
Bu çalışmada, silisyum oranları %0,5 ile %3 arasında yer alan altı adet Zn-15Al-3Cu-Si alaşımı kokil döküm yöntemiyle üretildi. Silisyum oranının üretilen alaşımların yapısal, mekanik ve tribolojik özelliklerine etkileri araştırıldı. Alaşımların içyapıları tar…
In this paper, the steps in the production process of forming hybrid composite coatings on surface of the ZA-27 alloy known as a sliding bearing material, and analysis of surface morphology of the coated samples were investigated. The process includes forming …
Bu çalışmada yüksek ticari saflıkta (%99,8) alüminyum ve çinko elementleri kullanılarak bir adet ikili Al-35Zn alaşımı üretildi. Alaşım elementlerinin ergitilmesinde orta frekanslı bir indüksiyon ocağı kullanıldı. Ergimiş durumdaki sıvı metal oda sıcaklığınd…
It is a fact that countries with robust and inclusive health services have a longer life expectancy at birth. Health services aim to improve and maintain health. In order to achieve these objectives, an integrated combination of various activities in which the…
Bu çalışmada kokil kalıba döküm yöntemiyle üretilen Zn-15Al-3Cu-1Si alaşımına T5 ve T7 ısıl işlemleri uygulandı. Alaşımın dökülmüş ve ısıl işlem görmüş durumlardaki numunelerinin içyapıları taramalı elektron mikroskobu (SEM) ve enerji dispersif spektrometresi …
Ceramic materials are characterized by outstanding hardness, extreme compressive strength and elastic modulus, wear resistance, thermal shock resistance, chemical stability and high temperature properties. Therefore they have potential materials to be use at i…
Climate change and environmental concerns led the investors to search for environmentally sustainable and friendly investments. Green bonds market has emerged as a result of this need. This study aims to analyze this market focusing on market efficiency. Marke…
Bu çalışmada yüksek aşınma direncine sahip Hardox 500 ve Hardox 600 çeliklerinin abrasiv aşınma dirençleri incelenmiştir. Her iki malzemeden 10 mm çapında ve 25 mm uzunluğunda numuneler hazırlanmıştır. Bu numunelerin aşınma davranışları pin-on disk test cihazı…
Supplier selection and measurement of supplier performance are multiple criteria decision making (MCDM) problems and have a strategic importance for all industries. Supplier performance measures is a tool to determine whether suppliers are doing their job as e…
ASTM G99 also known as pin-on-disk method is widely used to determine the tribological behavior of materials. But in general, there is always uncertainties in the results of wear test method. Different attempts have been made by scientists to eliminates these …
Organized Industrial Zones (OIZ) are growing in number since the year 1962, and as of 2018, the number of mixed, specialized and rehabilitated OIZs is more than 300. In these regions, wastewater management is mostly contracted with the municipality and in 46…
Textile industry has an important role in the economic development of Turkey. According to the Ministry of Economy, textile exports, which were about $ 6.36 billion in 2007, were about $ 10.11 billion at the end of 2017. The share of the textile sector in the …
People has learned and has been developing agriculture for years. The surrounding land has become the best way to use as a result of years of observations. Over the centuries, cities have grown significantly and observable changes in land usage come up with …
The waste problem has become a non-ignorable issue in apparel industry like other manufacturing industries and the concept of sustainability has come to the forefront. The term ‘sustainability’ refers to the long-term viability of business operations and their…
This article discusses an algorithm for fuzzy control of the technological mode of a reactor unit using fuzzy production models of logical inference and fuzzified measurement information from the control object, discusses the methodology of a computational exp…