1,720,969 research outputs found
COVID-19 Pandemisi Döneminde Tedarik Zinciri Risk Yönetimi Uygulamalarının Performansa Etkisi
No full text▪ Yüksek lisans tezi.This study investigates the role of supply chain risk management (SCRM) in mitigating the effects of disruptions on the supply chain's (SC) resilience and robustness in the context of the COVID-19 outbreak. Even though few studies have been conducted in this field, it appears to have varying effects depending on the country and sector. With this motivation, data from 102 Turkish pharmaceutical firms are collected and analyzed using confirmatory composite analysis (CCA) based on partial least square structural equation modelling (PLS-SEM). The results of the hypothesis analysis show the negative impact of COVID-19 disruption on SCRM practices, SC resilience, and SC robustness, which demonstrates the negative impact of the epidemic on the practices of SCRM, and their abilities to regain their SC's performance after absorbing the disruption effects. COVID-19 appears to have a negative impact on how firms identify and control SC risks due to the amplitude of sudden global disturbances that few firms were able to predict in advance. The findings indicate that COVID-19 disruption impacts have mainly affected SC resilience. However, SC robustness was not directly affected by disruption impacts, as most of the firms seemed to think that they would be able to maintain their planned performance after the disruption. Furthermore, the findings reveal the mediating role of SCRM practices and the prominent role they play in fostering supply chain resilience and robustness
Bir İnşaat Projesinin Zaman-Maliyet Karşlaşma Analizi
No full text▪ Yüksek lisans tezi.Due to the diversity of decision-making alternatives, uncertainty, and cost of making errors, it has become more complex today than ever before, and decision-making has grown considerably more challenging in the construction sector and its atmosphere (Haque, 2010). As a result, relying on a trial-and-error strategy or an experimental decision has become extremely challenging or even a bad choice in decision-making. When dealing with construction projects, it is always necessary to complete the project within a given timeframe to keep expense costs as low as conceivable assuming the continually changing conditions in the construction field. Failure to do so increases the overall costs. Thus, there must be a time-cost trade-off. This study mainly provides a case study for reducing total project time to reach the completion objective at the least total cost. Two approaches are compared such as crashing the project with the Critical Path Method using the manual network diagraming approach and crashing the project by developing the mathematical model and solving it using Excel software. The manual crashing increased the project cost by almost 11.2% and decreased the project duration by 115 days which is more than 35% of the total duration. The optimum solution provided by the solver for the mathematical model, on the other hand, resulted in a lower cost increase of 9.7% in project costs with the same reduction in total project duration
COVID-19 Pandemisinin Mühendislerin Performansı Üzerindeki Etkileri
No full text▪ Yüksek lisans tezi.During COVID-19 crisis, numerous studies have investigated employee's performance as a major determinant factor of organizational success. In such hard times, there was no noticeable focus on engineers' performance despite their critical roles and increased responsibilities. Thus, this research is initiated to study the impact of COVID-19 pandemic on engineers' performance. Survey data from 100 engineers have been analyzed using Partial Least Square Structural Equation Modeling (PLS-SEM), also reliability and validity of the constructed model have been ensured using a recently proposed new Confirmatory Composite Analysis method (HCCA). Path model results suggest a total positive impact of COVID-19 pandemic on engineers' performance through Organizational Change, Work-Life Balance, Job Satisfaction and Stress as mediators. The level of their experienced stress has been found to increase the performance rather than the opposite, which probably indicates successful management implementations that enabled creating performance improvements even amid the catastrophe. Control variables of Gender, Work Experience, Responsibility of Children, and Marital Status are additionally examined, and more experienced and non-married engineers have been observed to have relatively increased performance than others
Kritik Zincir ve Kritik Yol Proje Yönetim Metodlarının Karşılaştırmalı Analizi
No full text▪ Yüksek lisans tezi.PM is practically all procedures that help to reduce the waste of time and resources while most of the planned projects were using much more than what was assigned. These procedures include planning, managing, and monitoring processes of the project from its start to its end, covering the team management, cost optimization, activities scheduling, evaluating, and reporting. Two of the most commonly-used project scheduling methods are the Critical Path Method (CPM) and Critical Chain Project Management (CCPM). This thesis is presenting a comparison between CPM and CCPM showing the pros and cons of both methods when dealing with resource-depending projects. It shows the new features that can be achieved using CCPM, and the reasons that led to its use this new scheduling approach. This study also illustrates the application of both of the techniques in a real case study for an agricultural investment company, to explain how much CCPM can be more reliable and efficient in terms of time-saving and achieving the objectives of this kind of project. It is concluded that CCPM is a more suitable project management planning methodology to apply to this kind of project than CPM
KZPY'de Alternatif Tampon Boyutlandırma Yaklaşımları: Filistin'de Bir Vaka Çalışması
No full textYüksek lisans tezi.The implementation of project management methodologies is pivotal in achieving success in an increasingly complex and globally connected world. The widely used project scheduling method have been the Critical Path Method (CPM) until Critical Chain Project Management (CCPM) is introduced in 1997. Although CPM still dominates the scheduling approach in practice, CCPM is also continuously adopted to scheduling management of especially for resource constrained projects. On the other hand, finding the optimum buffer size introduced in CCPM approach is still a big challenge and studies on this area are still quite scarce. With this motivation, this thesis study is initiated to explore the adoption of CCPM principles to a resource-intensive mall project case in Palestine. Moreover, four different buffer sizing approaches proposed in the literature such as; Square Root of Sum of the Squares (SSQ), Adaptive Procedure with Density (APD), Adaptive Procedure with Resource Tightness (APRT) and Relative dispersion (RD) are studied and their performance are compared for their applicability for the selected case. The results revealed that the best option for project buffer size is obtained by applying APD Method; the duration to complete the project is computed as 555 which is 114 days (17%) less than CPM approach (with leveled resources). The study and the findings, underscores the importance of adopting appropriate buffer size considering the project characteristics in order to improve CCPM practices
Veri Madenciliği İle Akademik Personel Performansının Analizi
No full textYüksek lisans tezi.This study focuses on analyzing the performance of academics at a university in Istanbul based on six main criteria aligned with the university's performance evaluation guidelines. These criteria include publications (articles, books, and conference papers), teaching load, supervision of theses, and administrative responsibilities. A comprehensive dataset was compiled using data sourced from the Higher Education Council (YÖK) and university records pertaining to these criteria. The dataset, which initially consisted of 12664 entries representing 199 academics from nine different research domains, is transformed into input data containing 1194 entries. Subsequently, the dataset is clustered into five groups via K-means algorithm utilizing WEKA software. The distinct performance characteristics of the clusters are identified and discussed. The genders and research domains of the academic staff are also considered in the final discussions. The findings were presented to the University Administration in order to provide insight into strategic decisions
Türkiye Petrol ve Gaz Sektörü Tedarik Zincirinin Optimizasyonu
No full text▪ Yüksek lisans tezi.With the increasing demand for energy, optimization of the supply chain become an important factor in field development strategies targeted to maximize efficiency of energy supply and long-term economic feasibility for the next upcoming years. Supply chain optimization is considered an efficient solution system to manage the desired production, reduced lead time, lower costs and satisfy customer needs by analyzing the resources and implementing of strategic decision into the competitive market. Effective delivery service through quality management, sustainability in the supply chain and innovative strategies applied in the industry are also main contributors in enhancing the supply chain in the oil & gas sector. In this study, the optimization model consists of various activities like measuring, analyzing, modelling, prioritizing, and implementing actions using the literature review and quantitative application studies including spatial simulation and survey questionannaire tackeling the market
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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