Geri Dönüşüm İplikçiliğin Önemi ve İplik Üretim Yöntemleri

İnsan istek ve ihtiyaçları son yıllarda ekonomik ve teknolojik gelişmelerin etkisiyle hızla değişmektedir. Bu değişimler insan hayatına kolaylıklar getirirken, diğer yandan çevreyi ve doğal kaynakları olumsuz yönde etkilemektedir. Artan insan nüfusuna bağlı olarak doğadan kullanılan hammadde ve malzeme oranı da artmaktadır. Bu artış beraberinde çevre sorununu ve doğal kaynak sıkıntısını getirmektedir. Bu derlemede iplik sektöründe geri dönüşümünün önemi ve sağlayacağı faydalar üzerinde durulmuştur

Tıbbi Tekstiller ve Yara Örtüsü

Son yıllarda yaşanan ekonomik ve teknolojik gelişmelere bağlı olarak insan ihtiyaç ve istekleri hızla değişmektedir. Bu gelişmeler insan yaşamına kolaylıklar sağlarken, öte taraftan doğal yaşamı ve çevreyi olumsuz şekilde etkilemektedir. Bu olumsuz gelişmelerin bir neticesi olarak; kanser gibi bazı ciddi rahatsızlıklarda artış gözlemlenmektedir. Afrika ülkeleri başta olmak üzere birçok üçüncü dünya ülkesinde salgın hastalıkların oranında artış görülmektedir. Gelecek nesillere daha güzel ve sağlıklı bir dünya bırakmak için hastalıkların çabuk iyileşmesine yardımcı olan ve salgınları engelleyebilecek tekstil ürünlerinin kullanımına dikkat etmek gerekmektedir. Bu bağlamda, tıbbi tekstillere gereken önemin verilmesi oldukça önemlidir

Epidemiology of surgery associated acute kidney injury (EPIS-AKI): a prospective international observational multi-center clinical study

Purpose: The incidence, patient features, risk factors and outcomes of surgery-associated postoperative acute kidney injury (PO-AKI) across different countries and health care systems is unclear. Methods: We conducted an international prospective, observational, multi-center study in 30 countries in patients undergoing major surgery (> 2-h duration and postoperative intensive care unit (ICU) or high dependency unit admission). The primary endpoint was the occurrence of PO-AKI within 72 h of surgery defined by the Kidney Disease: Improving Global Outcomes (KDIGO) criteria. Secondary endpoints included PO-AKI severity and duration, use of renal replacement therapy (RRT), mortality, and ICU and hospital length of stay. Results: We studied 10,568 patients and 1945 (18.4%) developed PO-AKI (1236 (63.5%) KDIGO stage 1500 (25.7%) KDIGO stage 2209 (10.7%) KDIGO stage 3). In 33.8% PO-AKI was persistent, and 170/1945 (8.7%) of patients with PO-AKI received RRT in the ICU. Patients with PO-AKI had greater ICU (6.3% vs. 0.7%) and hospital (8.6% vs. 1.4%) mortality, and longer ICU (median 2 (Q1-Q3, 1-3) days vs. 3 (Q1-Q3, 1-6) days) and hospital length of stay (median 14 (Q1-Q3, 9-24) days vs. 10 (Q1-Q3, 7-17) days). Risk factors for PO-AKI included older age, comorbidities (hypertension, diabetes, chronic kidney disease), type, duration and urgency of surgery as well as intraoperative vasopressors, and aminoglycosides administration. Conclusion: In a comprehensive multinational study, approximately one in five patients develop PO-AKI after major surgery. Increasing severity of PO-AKI is associated with a progressive increase in adverse outcomes. Our findings indicate that PO-AKI represents a significant burden for health care worldwide

Equipment selection for an e-commerce company using entropy-based topsis, edas and codas methods during the covid-19

Background: The importance and market share of e-commerce has been increasing with the COVID-19 pandemic in recent days. Employees sometimes cannot go to the workplace due to epidemics such as COVID-19 that is spreading rapidly around the world, natural disasters and accidents. Companies can continue to serve their customers with the internet infrastructure and computer technologies they will provide to their employees. Thus, e-commerce companies can provide a sustainable competitive advantage in the sector. Working with the right suppliers is one of the important decisions that will improve the service quality of the firms and affect the sustainability of the enterprise. Methods: This study aims to select the best laptop for a company in the online trade industry using Entropy-based EDAS, CODAS and TOPSIS methods. In the study, 6 alternative laptops have been evaluated according to hard disk capacity, ram, battery power, processor speed, weight, price criteria. The Entropy method has been used to identify the weights of the criteria in the study. These criteria weights have been used in EDAS, CODAS and TOPSIS methods. TOPSIS, EDAS and CODAS methods have been used to determine the best alternative. Also, the correlation between the results of the TOPSIS, EDAS and CODAS methods has been examined with the Spearman Correlation approach. Results: As a result of the Entropy method, it has been determined that the most important criterion is the hard disk capacity criterion. TOPSIS, EDAS and CODAS method results have been compared and the most suitable alternative has been selected. According to the results of the study, the best alternative has been selected as A5. Spearman Correlation analysis results show that there was a strong positive relationship between the methods used and the results obtained. Conclusions: The study differs from existing studies in the literature in that it is the first study in which laptop selection was made using TOPSIS, EDAS and CODAS methods together. The results of this study can be compared with the results of future studies that will be carried out using different MCDM methods and different data

Ocena wyników portów lotniczych w czasie pandemii COVID-19

Globalisation, international trade, tourism, and economic and technological advances have contributed to the development of the aviation industry. In a globally competitive environment, airports need to use their resources efficiently and evaluate their performance to compete with their rivals. Data Envelopment Analysis (DEA) is a widely used method in the performance evaluation of airports. This study was aimed to measure the performance and ranking of selected major international airports in 2019 and the first quarter of 2020 using the DEA method, the Technique for Order Preference by Similarity to Ideal Solutions (TOPSIS) method, and the Evaluation Based on Distance from Average Solution (EDAS) method. Efficiency analysis has been carried out using CCR-DEA models. Later, performance evaluation of the alternatives was made according to the TOPSIS and EDAS methods. In this study, the ranking of the airports has been compiled according to the results of the DEA, TOPSIS and EDAS methods. The study found that the use of the DEA method together with Multi-Criteria Decision-Making (MCDM) methods such as TOPSIS and EDAS for the performance evaluation of airports allows a full and clear ranking of decision-making units (DMUs).Globalizacja, handel międzynarodowy, turystyka oraz postęp gospodarczy i technologiczny przyczyniły się do rozwoju branży lotniczej. By móc skutecznie rywalizować w globalnie konkurencyjnym środowisku, porty lotnicze muszą efektywnie wykorzystywać swoje zasoby i dokonywać oceny swoich wyników. W przypadku portów lotniczych szeroko stosowaną metodą oceny wyników jest Data Envelopment Analysis (DEA). Niniejsze badanie miało na celu określenie wyników i pozycji rankingowej wybranych głównych międzynarodowych portów lotniczych w 2019 r. i I kwartale 2020 r. za pomocą metody DEA, a także metod TOPSIS i EDAS. Analiza efektywności została przeprowadzona z wykorzystaniem modeli CCR-DEA. Następnie dokonano oceny wyników alternatywnych za pomocą metod TOPSIS i EDAS. Ranking lotnisk został natomiast opracowany na podstawie uzyskanych wyników badań przeprowadzonych trzema metodami: DEA, TOPSIS i EDAS. Badanie wykazało, że zastosowanie do oceny wydajności portów lotniczych metody DEA wraz z metodami Multi-Criteria Decision-Making (MCDM) takimi jak TOPSIS i EDAS, pozwala na uzyskanie pełnego i czytelnego rankingu jednostek decyzyjnych (DMU)

Rejenere Open-End İplik Üretim Özellikleri Üzerine Bir Araştırma

Son yıllarda dünya genelinde artan nüfus ve yaşanan teknolojik gelişmelerin bir sonucu olarak çevre ve kaynak yetersizliği sorunuyla karşı karşıya gelmiş durumdayız. Doğal kaynakların hızla tüketilmeye devam edilmesi durumunda tüm dünyada doğal kaynaklar yakın zamanda tükenecektir. Doğanın temiz kalmasını ve kaynakların korunmasını sağlamak için geri dönüşüm çok önemli bir rol almıştır. Bu yüzden rejenere open-end iplikçiliğin geliştirilmesi gerekmektedir. Bu çalışmada, Sclafhorts-Saurer firması Autocoro 8 makinesinde 3 farklı iplik numarasında (Ne 15/1, Ne 20/1, Ne 28/1), 3 farklı rotor hızında (100000 devir/dakika, 110000 devir/dakika, 120000 devir/dakika) ve değişik bükümlerde (490 tur/metre, 550 tur/metre, 560 tur/metre, 640 tur/metre, 660 tur/metre, 740 tur/metre, 750 tur/metre , 870 tur/metre) iplik üretimi gerçekleştirilmiştir. Autocoro 8 makinesinde farklı hammaddelerden üretilen ipliklerin kalite değerlerine bakılmış ve iplik üretim özelliklerine etki eden parametreler incelenmiştir

Geri Dönüşüm İplikçiliğin Önemi ve İplik Üretim Yöntemleri

İnsan istek ve ihtiyaçları son yıllarda ekonomik ve teknolojik gelişmelerin etkisiyle hızla değişmektedir. Bu değişimler insan hayatına kolaylıklar getirirken, diğer yandan çevreyi ve doğal kaynakları olumsuz yönde etkilemektedir. Artan insan nüfusuna bağlı olarak doğadan kullanılan hammadde ve malzeme oranı da artmaktadır. Bu artış beraberinde çevre sorununu ve doğal kaynak sıkıntısını getirmektedir. Bu derlemede iplik sektöründe geri dönüşümünün önemi ve sağlayacağı faydalar üzerinde durulmuştu

Relationship marketing orientation in healthcare organisations with the AHP method. Internal and external customer perspective

Adopting the relationship marketing approach in health institutions and evaluating the weights of its dimensions will benefit the effectiveness of marketing strategies. This study aimed to determine the critical levels of relationship marketing orientation components in private health institutions using the analytical hierarchy process (AHP). In the study, relationship marketing orientation was evaluated according to six criteria in line with the opinions of five experts for employees and 20 people who previously benefited from health services for their customers. As a result, the criterion with the highest priority value was communication with 0.259, and the best health company A. Furthermore, the AHP method results were compared with TOPSIS, EDAS, and CODAS methods. In addition, the Spearman Correlation method was used to determine the correlation between the results

Health System Efficiency of OECD Countries with Data Envelopment Analysis

Purpose: This study is aimed at measuring the efficiency of 37 OECD countries for 2020 using the Data Envelopment Analysis (DEA) method. Besides, it is aimed at ranking the efficient decision making units by using the super-efficiency DEA model. Design/methodology/approach: In the study, analyses were carried out with input-oriented Charnes, Cooper and Rhodes (CCR), input-oriented Banker, Charnes and Cooper (BCC) models and super-efficiency models of these models by using 4 inputs and 3 outputs. Findings: As a result of the analysis, 14 countries in the CCR model and 20 countries in the BCC model were efficient. According to the results of the super-efficiency models, the efficient countries were ranked. Research limitations/implications: The limitations of the study are the analyses are based on input-oriented DEA models and the research was conducted in OECD countries. Originality/value: Performance evaluation of health systems has gained importance in recent years. Many countries are making efforts to improve their health systems. Due to epidemics such as COVID-19, OECD countries, like many countries around the world, have increased the share of health expenditures in GDP. Because of this situation, the evaluation of the performance of OECD countries in the field of health has emerged as a very important research topic

VALUE STREAM MAPPING APPLICATION IN SERVICE SECTOR: A CASE STUDY OF A UNIVERSITY RESEARCH AND APPLICATION CENTER

Yalın üretim, israfın elimine edilmesiyle ekonomik ve kaliteli ürün ya da hizmet üretilmesine dayalı bir sürekli iyileştirme felsefesidir. Yalın üretimde değer akış haritalama (DAH), ürün veya hizmet üreten işletmeler tarafından yalın üretime geçiş aşamasında yararlanılabilecek etkili bir yöntemdir. Bu çalışmanın amacı, laboratuvar analizleri hizmeti sağlayan bir üniversite araştırma ve uygulama merkezinde DAH yöntemini uygulayarak değer katan ve değer katmayan faaliyetleri tespit etmek ve değer katmayan faaliyetlerin elimine edilmesi için bir plan geliştirmektir. Bu amaç doğrultusunda, Türkiye'de faaliyet gösteren bir üniversite araştırma ve uygulama merkezi ele alınmış ve bu merkezde yapılan analizlerden bir tanesine odaklanılarak bir DAH uygulaması gerçekleştirilmiştir. İlk olarak belirlenen hizmet ailesine ilişkin mevcut durum haritası çizilmiş ve mevcut durumda hizmet akışında yer alan değer katan ve değer katmayan faaliyetler tespit edilmiştir. Sonraki aşamada mevcut durumdaki kayıpları elimine edebilecek bir gelecek durum haritası çizilmiş ve gelecek durum için önerilen yalın hizmet akışı gösterilmiştir. Son olarak, çalışmanın bazı kısıtlarına değinilmiş ve gelecekte bu konu ile ilgili yapılacak araştırmalar için bazı önerilerde bulunulmuşturLean production is a philosophy of continuous improvement that is based on producing economical and qualified products or services through waste elimination. Value stream mapping (VSM), one of the methods used in lean production, is an effective method that can be utilized by manufacturing or service firms when transforming into a lean organization. The purpose of this study is to determine value-added and non valueadded activities and developing a plan for elimination of non value-added activities by implementing VSM method at a university research and application center providing analysis service. In accordance with this purpose, a university research and application center operating in Turkey was taken and a VSM application was carried out focusing on one of the analyses made in this center. Firstly, current state map of the specified service family has been drawn and value added and non value added activities in the current state service flow have been identified. In the next step, a future state map that can enable to eliminate wastes in the current state, was drawn and lean service flow for the future state was shown. Finally, limitations of the study have been mentioned and some suggestions for future work have been mad