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Yayın The Covid 19 effect on macroeconomic indicators(PressAcademia, 2020-12-31) Deniz, E. Asena; Teker, DilekPurpose- From the moment covid 19 started to spread in the world, its effects began to be seen simultaneously in financial markets and economy.The purpose of this study is to observe Covid 19 effect on EURO/USD,gold ,oil and wheat prices. Methodology- The database includes the Daily prices of EUR/USD, wheat ,gold , brent oil prices and COVİD 19 numbers between the period of 31.12.2019-04.09.2020 which consist of 180 daily data. Natural logaritm for each indicator is used. First, the stationarity of the series were analyzed with ADF (Augmented Dickey Fuller) unit root test. Lag lengths are determined. Interactions between the series were analyzed by theARDL, Impulse- Response Function and Variance Decomposition method. Findings- The series are found out to not to be stationary as a result of Unit root test.After, the lag length criteria using VAR models were checked and this lag length criteria for them were determined as one . According to the ARDL test result, cointegration could not be found between our data. Impulse response graphs indicate that all variables respond in a reducing way to reducing shocks occurred in each indicator. Shocks have lost their effect on average in 2 days. Conclusion- The results indicate that the effect of COVID 19 on EUR/USD , gold , brent oil and wheat prices do not have a strong effect. The results may be beneficial for only literatüre.Yayın Psychological distress of breast cancer survivors during the Covid-19 pandemic and related factors: a controlled study(KARE Publication, 2023-07) Taş, Beyza; Anuk, Dilek; Akçinar Yayla, BernaOBJECTIVE: Although the prevalence of breast cancer is high among women, survival rates are increasing. How-ever, breast cancer survivors (BCS) continue to experience various psychological problems after their treatments and are also exposed to additional stressors, such as the current Coronavirus disease 2019 (COVID-19) pandemic. The aim of this study was to examine the psychological distress and related factors (social support, intolerance of uncertainty, coping strategies) of BCS during the COVID-19 pandemic and the role of breast cancer diagnosis in this process. METHODS: This study included 95 BCS and 87 healthy women. Sociodemographic Information Form and depression anxiety stress scale, social support scale, intolerance of uncertainty scale, and coping strategies short form scales were administered to the participants. T tests and regression analyses were performed to examine the relationships between the variables. RESULTS: There was no significant difference between the two groups in terms of depression and anxiety, but the stress of BCS was lower than that of healthy women. In the regression analysis, the diagnosis of breast cancer was not a predictor for depression and anxiety, but it was a significant predictor for stress. Com-mon predictors of increased depression, anxiety, and stress were decreased social support, increased uncertainty intolerance, and increased emotion-focused coping. CONCLUSION: Focusing on the development of intolerance of uncertainty, social support, and problem-focused coping strategies of psychological interventions for women BCS during epidemics such as COVID-19 may reduce their psychological distress while maintaining and increasing their psychological well-being.Yayın Evolution of business models during the Covid-19 pandemic(PressAcademia, 2022-07-30) Teker, Suat; Örendil, EmrePurpose - The purpose of this study is to propose a comprehensive definition for business models, reviews and summarizes the findings of a previous work by Guckenbiehl and Corral de Zubielqui (2022) about how business models have evolved by providing insights from reshaped businesses during the COVID-19 pandemic. Methodology - In this study, an extensive literature review is followed to learn about definition of business models and how business model have been adapted or even innovated during the times of the COVID-19 pandemic. Findings - Construction of a well-planned business model is a requirement for an organization to reach success. In the times of disruptive events, business models go through adaptive or innovative changes which is a necessity for survival and further success. It is observed that organizations generate different responses to crises (e.g., the COVID-19 pandemic) in means of business model changes. The understanding of these differences is facilitated by the aforementioned work through grouping organizations in six different clusters. Conclusion - The structure of a business model prior to the COVID-19 pandemic was also one of the determinants of a business’s response to the pandemic. Businesses either made no changes in their business models, or made notable innovations, or little adaptations in response to the disruptive environment.Yayın Digital banking during the COVID-19 era in Turkiye(Sivas Cumhuriyet Üniversitesi, 2023-31-12) Oğuz, Ahmet Bünyan; Soykut Sarıca, Yeşim PınarThe Covid-19 pandemic which began in early 2020 in Wuhan, China and spread around the world, created a serious impact on personal and business life for all. While individuals tried to protect themselves from the pandemic and continue their lives, businesses also tried to cope with the change in individual consumer behaviour. This study analyses the digital banking usage trends in Türkiye, focusing on the Covid-19 pandemic period, between January 2020 and June 2022, under the precautions imposed by the government such as lock-downs, curfews and public access limitations to businesses, using available quarterly transaction and usage data on virtual credit cards, mail order and phone payments, contactless cards, domestic credit cards, number of credit and bank cards, digital banking, internet banking and mobile banking. Research findings suggest that while internet and digital banking usage increased, significant changes have been observed in contactless card, virtual credit card transactions indicating a shift in user preference in banking during the pandemic period either voluntarily or with the effects of the restrictions and intention to realize their transactions distancing themselves from the crowds. Further research analysing whether this shift is permanent or not is recommended.Yayın Tracing the evolution of ecommerce: historical foundations, impacts of the pandemic, and future directions(Bayburt Üniversitesi, 2025-01-29) Örendil, EmreElectronic commerce, or ecommerce, has been a topic of interest particularly in the last years. While ecommerce activities are notably facilitated today, it has gone through notably different forms since its first seeds were planted. The COVID-19 pandemic was a crisis for most businesses but also an opportunity for some, especially for those who were able to pivot or transform their businesses with respect to the new needs of consumers. With the positive impact of the pandemic on ecommerce sector observed especially as of the second quarter of 2020, its trend has surpassed the expectations. This overperformance came with numerous sceptical questions about the future of ecommerce. This study investigates the historical evolution, pandemic-induced transformations, and future trends of ecommerce. It conveys a compilation of milestones through systematic literature review with a focus on the practicality. This paper provides with a timeline of the ecommerce history to bridge its evolution in the last 80 years by visualizing the phases it has been through along with its anticipated trend in the upcoming years. The studied data reveals how COVID-19 accelerated ecommerce growth and highlights its implications for global retail. The growth of ecommerce may slow down but it will endure its growth as online shopping has already become an indispensable habit.Yayın Medical device maintenance strategy for post pandemic: case on ventilators(IEOM Society International, 2022-06) Aksezer, Sezgin ÇağlarEquipment-demand of healthcare providing institutions increased drastically during the Covid-19 pandemic. While majority of the demand (also the most publicized) has been occurring for disposable products such as masks, gloves, gowns, sterilizers, and test kits; the demand for electronic devices also increased during the initial waves of the pandemic but dropped afterwards as it was satisfied by the manufacturers. Since devices like vital monitors, dialysis systems, and ventilators are not single use products, handling of such systems after acquisition has become an issue of operations management for healthcare professionals. Utilization of such devices seem to have a cyclic behavior correlated with pandemic waves (as the hospitalizations peak so the usage and vice versa) and tend to have a longterm decreasing trend as the Covid-19 pandemic transforms to epidemic. Ventilators have found extensive usage in the treatment of Covid-19 related patients for ICU and emergency admissions. Medical ventilator device provides mechanically simulated air into the lungs of patients who are completely unable to breathe by themselves or breathes but insufficient to carry the necessary oxygen. So, the total functionality is crucial and service readiness is imminent. Number of active ventilators in Turkey increased to 22.000 units by the first year of the pandemic. However, utilization ratio of ventilators dropped to 29.6% (as of March 17, 2022) from the heights of 55% observed in the winter of 2021. Because of such decline, devices have become idle or operational times have dropped significantly. Health institution under investigation is a full-service government hospital operating in the city of Istanbul, Turkey. There are currently 142 ventilators in the hospital with less than 35% utilization. Maintenance task is only carried out by manufacturer approved service providers and parts are supplied from abroad. Since the operator of devices is a non-profit government hospital, maintenance outsourcing is done by bidding with strict budget and usually under the pressure of currency exchange rates even after the maintenance contract is signed. Failure analyses indicate mean time to failure of devices has not changed significantly with respect to pre-pandemic operation. Periodic maintenance strategy that has long been adopted for such devices has been modified to consider cyclic operation, extended standby durations, and lead time of spare parts. Further proposals are under consideration for group maintenance involving multiple healthcare institutions.
