Yüksek Lisans Tezleri / Master's Theses

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Yasal Uyarı ⚠️ Araştırmacılar, tezlerin tamamı veya bir bölümünü yazarın izni olmadan ticari veya mali kazanç amaçlı kullanamaz, yayınlayamaz, dağıtamaz ve kopyalayamaz. İKÜ Akademik Açık Erişim Web Sayfasını kullanan araştırmacılar, tezlerden bilimsel etik ve atıf kuralları çerçevesinde yararlanırlar.

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Open Access
A comparative study of deep learning techniques in concrete crack detection: Convolutional neural networks and logistic regression
(İstanbul Kültür Üniversitesi / Lisansüstü Eğitim Enstitüsü / Endüstri Mühendisliği Ana Bilim Dalı / Mühendislik Yönetimi Bilim Dalı, 2021) Rasul, Azhi Yassin; YÜKSEKTEPE, FADİME ÜNEY
İnşaat alanlarında zorlu durumlarla günlük olarak karşılaşılmaktadır. Bu zorlukları yönetmek için yeni teknik ve yöntemler ortaya çıkmakta ve geliştirilmektedir. Klasik Makine Öğrenmesi (MÖ) ve Derin Öğrenme (DÖ) yöntemlerinin inşaat yönetimi alanında kullanılması da artmaya başlamıştır. Makine öğrenmesinin günlük problemleri çözme ve pratiğe dökülmesi için kullanılması, mühendislerin öne çıkarması ve başarması gereken bir görevdir. İnşaat alanlarında karşılaşılan problemlerden biri beton çatlağıdır. Çatlaklar yapılarda ortaya çıkan ve fark edilmesi zor olan hatalı oluşumlardır. Yapılardaki bozulmaları arttıracakları için erken zamanda tahmin edilmeleri çok önemlidir. Bu çalışma basit kameralarla toplanmış olan görüntüden oluşan bir veri seti için çatlak tahmininde DÖ yöntemlerinin kullanılmasını araştırmaktadır. Çatlak ve çatlak olmayan 40000 farklı görüntüden oluşan veri kümesi eğitim, doğrulama ve test olmak üzere üç gruba bölünmüştür. Bu veri kümesi, derin öğrenme yöntemlerinden biri olan ve yapay sinir ağları formundaki Evrişimsel Sinir Ağları (ESA) ve ikili sınıflandırma problem yöntemlerinden Lojistik Regresyon (LR) kullanılarak analiz edilmiştir. Son olarak, sonuçlar hem iki yöntem arasında hem literatürdeki mevcut çalışmalarla hem de gerçek hayat verileri ile kıyaslanmıştır. Aynı veri setinde hem ESA hem de LR modelleri iyi sonuçlar vermiştir ama ESA yöntemi doğruluk oranı ve kullanım açısından daha iyi olarak değerlendirilmiştir. Elde edilen sonuçlar umut vericidir ve ESA‟nın gerçek hayat inşaat yönetim uygulamalarında yakın gelecekte kullanılması beklenmektedir.
Open Access
Accuracy Analysis in Medical Device Quality Measurement by Software and New Perspective of Machine Vision System
(İstanbul Kültür Üniversitesi, 2023) HOUSHMANDSHARIFI, NEDA; Murat Taha Bilişik
This dissertation investigates the impact of software and machinery on the accuracy of quality measurements for medical products, specifically focusing on key parameters of medical devices. The primary objective is to streamline quality control processes, reducing human errors. To achieve this, we leverage software and artificial intelligence in conjunction with visual inspection machinery. Our study aims to assess the quality of medical products quantitatively by analyzing them as a percentage of the ideal quality. We seek to adapt the existing quality control framework to tailor it to the specific parameters that significantly influence equipment quality. In doing so, we adhere to ISO regulations and associated standards, which guide us in identifying these critical parameters and optimizing the quality control processes for various medical equipment. It is important to note that our goal is not to replace established quality management standards but rather to introduce more efficient processes that can complement these standards. We also evaluate the accuracy of traditional quality control methods in comparison to the accuracy of quality control through visual inspection systems. In this dissertation, we present two case studies as empirical evidence, illustrating the impact of human error on quality control and the effectiveness of the visual inspection system.
Open Access
Analysis of Ambient Energy Harvesting in Individual and Industrial Environments Using Quantitative Methods
(İstanbul Kültür Üniversitesi, 2023) SHAH, SEHRISH RAZZAQ; Ayşe Tülin Aktin
Ambient Energy harvesting is a way to reap and grind energy from such source which is producing or converting one form of energy into another, but alongside that energy some of the energy is being lost which in our daily or busy routine no one even notices that something is being wasted. That something is known as our or machines kinetic energy which even we ourselves cannot recognize. That small amount is harvested and then controlled with some specific tools set and magnified to be get used in daily uses instead of those expensive ways which we have adopted from centuries. This case study is focusing on some aspects of how ambient energy harvesting is playing an important role in individual environment as well as which development we can have for industrial sector to cope up with this energy utilization hinge in our way. Also, we have laid a way to make our industrial sector that sufficient that it will start generating the energy on its own and not to rely on conventional and expensive energy, which has grasped the major portion of individual and companies' utility expenses. By the end we will be able to create a future with self-powered homes and industries that will be less polluted and affordable to all the community.
Open Access
Analyzing the adoption of project management methodologies and tools in the Turkish non-governmental organizations(NGOS) working in Syria humanitarian response
(İstanbul Kültür Üniversitesi / Lisansüstü Eğitim Enstitüsü / Endüstri Mühendisliği Ana Bilim Dalı, 2021) Alkhater, Awaad; Ülkü, İlayda
Çeşitli araştırmalar, sivil toplum kuruluşları tarafından uygulanan kalkınma ve insani yardım projelerinin somut olmayan sonuçlar, çok sayıda paydaş ve karmaşık ve riskli ortamlar gibi benzersiz özelliklere sahip olduğunu bulmuştur. Sonuç olarak, geleneksel proje yönetim araçları ve metodolojileri insani yardım ve kalkınma projelerinde benimsenmek için uygun olmayabilir. Bu araştırma, nicel çalışmayı kullanarak Suriye insani yardım müdahalesinde çalışan STK'lar tarafından kullanılan proje yönetimi araçları ve metodolojilerinin benimsenmesini analiz etmeyi amaçlamaktadır. Bir anket tasarlandı ve bu anket STK'lardaki proje yöneticilerine dağıtıldı. 102 katılımcı ankete yanıt verdi. Aanket STK'ların genel bilgileri, benimsenen proje yönetimi metodolojileri ve araçları ve mantıksal çerçeve matrisinin benimsenme düzeyi şeklinde oluşturuldu. Daha sonra veriler bir MS Excel pivot tablosu aracılığıyla analiz edildi. Elde edilen sonuçlar, insani yardım projelerinin ve STK'ların benzersiz özelliklerini ve bu STK'larda farklı proje yönetimi metodolojileri ve araçlarının benimsenme düzeyini gösterdi. Ayrıca, PCM ve PMD Pro metodolojilerinin STK'lar arasında en çok benimsenen metodoloji olduğu bulunmuştur. Mantıksal çerçeve matrisi, maliyet muhasebesi ve proje programının en çok benimsenen proje yönetimi araçları olduğu ve bunu ilerleme raporu, iletişim planı ve arıza yapısı (WBS) çalışmaları takip ettiği tespit edilmiştir.
Open Access
Assessing the Normative Power of the European Union on Tunisian Democracy: Navigating Local Challenges at Major Crossroads
(İstanbul Kültür Üniversitesi, 2023) JENNANA, MARWENE BEN; Ahmet Cemal Ertürk
The shared history between the European Union and Tunisia is widely deemed to evoke a longstanding relation based on mutual benefit as well as common cultural heritage. The country is considered an important historical ally of the European Union in terms of economic and military collaboration. The bilateral relations have been positively assessed until the occurrence of the arab spring in the wake of the year 2010, the period during which a third element emerged as an additional incentive for more strategic approximation. This thesis investigates the impact of the European Union (EU) on the development of democracy in Tunisia during the period from 2011 to 2022. The central research question seeks to elucidate the extent to which the EU's external aid has benefitted Tunisian democracy while shedding light on the responsiveness of the 2019 regime to the European implementation of the domestic democratic framework. To answer this question, In addition, the researcher conducted interviews with diplomats and state personnel from Tunisia who have vested work and time in both the pre-revolution and post-revolution periods. The study contends that the EU sought to bring a modernizing parameter to Tunisia by providing financial, political, and technical aid that sought to install solid democracy in the country. However, the researcher found that the EU's efforts were originally insufficient and non-conforming the initial rhetoric of EU officials. The study also argues that the Tunisian democratic example has been undermined by the events of July 25, 2021, which obliged the country to regress back into one-man rule primarily spearheaded by the freezing of the work of the national assembly due to corruption and economic issues that preceded it caused mainly by the COVID-19 pandemic
Open Access
An Assessment of the Socio-Economic Impact of Boko Haram Insurgency in the Northeast of Nigeria
(İstanbul Kültür Üniversitesi, 2022) BELLO, HIDAYA SHEHU; Muzaffer Şenel
Using the frustration-aggression theory, this research could assess the socioeconomic impact of the Boko Haram Insurgency in the North East of Nigeria. This research was able to assess the find out that the Boko Haram insurgency has caused unbearable economic hardships in the North Eastern part of the country, and in extension in most parts of Nigeria. This research finds out that illiteracy/ignorance, unemployment, porous borders, arms proliferation, etc. have been the root causes of the Boko Haram insurgency in Nigeria; its aftermath is underdevelopment, poverty, fear, drug abuse, more IDPs, etc. The importance of this research is that it will help further researchers who want to research similar topics. This research emphasizes that adequate reforms, policies and regulations have to be unified from the three tiers of Federal, State and Local governments of Nigeria; border security will have to be strengthened, and there should be qualified control of the inflow of arms into the country, educating the civilians on self-defence should also take as a focal point.
Open Access
Behavior of Irregular RC Structures Subjected to Horizontal and Vertical Seismic Excitations
(İstanbul Kültür Üniversitesi, 2021) AHMED, SEAD MOHAMED; Erdal Coşkun
The past earthquakes show that the structures are not designed well to prevent the effect of earthquakes. Irregular structures have become very popular, and they carry a risk of failure during strong ground motions. The aim of this study is to evaluate the behavior of vertical irregular structures when subjected to both components (horizontal and vertical) of seismic excitations. Stiffness and mass irregularities are considered throughout the study. In this study, Four 2D models with 6-storey each were chosen to represent this problem. All the models were analyzed insides SAP2000 V21 software and designed according to ASCE 7-16 seismic code. Analyses were performed using nonlinear time history analysis using Newmark's average method. However, five different ground motions for both components in the near field region were obtained from the PEER website and scaled inside the seismomatch 2020 program. All the frame models are analyzed under two different loading cases: 1) Horizontal Only and 2) Horizontal plus Vertical. The structure's response in the form of maximum inter-story drifts, the axial force of column, joint acceleration, and mass participation ratio are compared under two loading conditions.
Open Access
Black Hole or Living Hall: Reconstructing Female Sexuality, Deconstructing Male Anxiety
(İstanbul Kültür Üniversitesi, 2022) ÖMÜR, GİZEM SERDAR; Gillian M. E. Alban
In this study, the main concern is to apply a reconstructive approach to reshape the image of female genitalia by restoring a primordial representation of women. To achieve this, I delve into multiple disciplines once amalgamated by androcentric forces that debilitated women, with an intent of reverting the same perception for the benefit of women by activating such primordial images of women. Instead of the priority given to death and destruction in defining and contemplating the meaning of life, as observed in the present phallocentric systems, this study provides a new understanding arising from female genitals from which life emerges and to which all living beings yearn to return as nostalgia and 'a belated wish' as Freud says. Concentrating on the representation of female sexuality in American cartoonist Charles Burns' graphic novel Black Hole, British writer Angela Carter's The Passion of New Eve and German writer Patrick Süskind's Perfume, this M.A. thesis employs several contemporary and interdisciplinary theories and methodologies to decode and recode the symbols, images, figures and metaphors attributed to women in cultural history. In this regard, placing the aforementioned literary works in their specific contexts and taking them under scrutiny in their attempt to cross the borders that western logocentrism dictates, this study suggests a thorough analysis of the distaff side, the underwritten part of history. This analysis is essential in that it aims to revive the repressed image of a Goddess figure, who 'creates the world by dancing', and asks for recognition by way of substitutions as they appear in the form of 'objet petit a', 'uncanny', 'abject', 'grotesque'; euphemistically called 'black hole' and 'black continent'. The sum of such concepts connotes monstrous, a non-human other in patriarchal discourse. However, such a view also assigns women to an in- between state of animate/inanimate, animal/human, female/male, defying the western binarised philosophy towards a nonbinary understanding. Therefore, this study concludes that the monstrosity attached to the female reproductive body through various ways, alongside the major anxiety that has governed the male economy for thousands of years, arises from a deathly attraction, as displayed by the keen analysis of the given three literary texts in the light of Irigaray's multiplicity and fluidity, fed by Cixous's aphorisms, supported by Kristeva's 'chora' and Ettinger's 'matrixial', manifested in Eisler's prehistoric Goddess figurines and Creed's 'monstrous feminine'.
Open Access
Case Study of the Impact of Using Artificial Intelligence With Cloud Computing in Smart Factory Management
(İstanbul Kültür Üniversitesi, 2022) ALDARABSEH, ESRAA AL; İbrahim Ethem Tarhan
By employing artificial intelligence within the work of the cloud, the promised future is to create self-lead computers. Sharing the resources increased the innovation, it allows to develop of industries with high performance in the lowest time of study and analyze it quickly. This study tries to investigate the effect of the cloud on factory management that affects artificial intelligence devices that leads to the development of business growth which in affect increase the profits. Also, this research examines the factors from SWOT/PESTEL analysis among a cloud provider and consumer. Besides, linear regression is used to measure the most influential revenue of the main products in the total profit of the firm and propose a model to maximize it. The factors determined that may affect SOWT/PESTEL analysis and by brainstorming the ideas gathered and generated. Linear regression was used based on seven variables; six main revenues and total profit then applied Minitab software to obtain a relation between them. The influencer product was used to maximize its profit by Solver software. The outcomes presented an important relationship between the variables under a framework. The study presented economic growth in the firm that used cloud with AI equipment and the results proved to increase the net profit after the framework was developed.
Open Access
Challenges and Responses in Tunisian Activism a Study of Tunisian Social Movements in the Post Revolutionary Period
(İstanbul Kültür Üniversitesi, 2023) ZOUAOUI, SARRA; Nazlı Çağın Bilgili; Ahmet Cemal Ertürk
This thesis analyzes the development of Tunisian activism in the post the 2011 period, focusing on the challenges facing social movements in the country. This study examines the history of Tunisian activism from colonial rule to the present day, with a particular emphasis on the post-revolution period. Drawing on existing literature and theory, the study identifies the emergence of new forms of digital activism and transnational networks and the fragmentation of social movements into multiple competing organizations as key features of post-revolutionary Tunisian activism. Building on this analysis, the study develops a specific hypothesis that the Tunisian state's response to post-revolutionary Tunisian activism, including co-optation and repression, has created significant challenges for social movements in sustaining mobilization and achieving substantive social and political change. This hypothesis is tested by examining the state's response to activist mobilization, including its use of media and surveillance, as well as analyzing the challenges faced by social movements, such as generational divides and the difficulties of coordinating across organizations. The study concludes by reflecting on the implications of these findings for the future of Tunisian activism and the broader implications for social movements in the Middle East and North Africa. Ultimately, this thesis contributes to a deeper understanding of the complexities of post-revolutionary politics in Tunisia and the challenges activists face to build a more just and democratic society.
Open Access
The Challenges of the French Secularism on the Lives of Muslim Women
(İstanbul Kültür Üniversitesi, 2023) FARAH, HAMDA ABDOU; Nazlı Çağın Bilgili
This thesis explores the challenges encountered by Muslim women in France due to secularism, a key principle of French society. By focusing on the complex interactions between secularism, religious identity, and gender, this research examines the tensions and conflicts experienced by Muslim women in their daily lives. The study analyzes French secular policies and laws, including the ban on full-face veiling, and their impact on the rights and freedoms of Muslim women. It also examines the psychological, social, and cultural repercussions of these measures on their sense of belonging and ability to express their religious and cultural identity. Furthermore, this research examines the specific challenges faced by Muslim women in areas such as education, employment, and access to public services due to secularism and the stereotypes and prejudices associated with their religion. The primary objective of this research is to provide an in-depth analysis of the interactions between secularism, gender, and religious identity, this thesis contributes to a better understanding of the challenges faced by Muslim women in France and aims to promote constructive and inclusive dialogue on the issue of secularism in French society.
Open Access
Colonized Black Women's Bodies Resisting Oppression in Morrison's Beloved and Walker's Possessing the Secret of Joy
(İstanbul Kültür Üniversitesi, 2023) ÖZTÜRK, MAKBULE; Gillian Mary Elizabeth Alban
This study investigates the marginalization and violation of black female bodies within the oppressive power mechanisms of the colonial and patriarchal ideologies in Toni Morrison's Beloved (1987) and Alice Walker's Possessing the Secret of Joy (1992). Resistance of the oppressed bodies of female characters is scrutinized through a comparative analysis. Postcolonial and black feminist/womanist points of view along with a feminist understanding of the so-called subordination of black female bodies are applied in a deconstructive method. The colonial and patriarchal ideologies are put under scrutiny to show that these two ideologies resemble each other in terms of their hegemonic structures highlighting the dichotomized thinking inherent in the western understanding which leads to the so-called subordination of black women. Logocentrism of the colonial system and phallocentrism of the black patriarchal perspective locating black women in the "inferior other" position of the binarized thinking is demystified. For this end, Michel Foucault's idea of power and knowledge; remarks of bell hooks, Angela Davis and Audre Lorde on the state of black female bodies in the sexist-racist systems along with Morrison's concept of Africanism are referred to deconstruct the binarized thinking. Additionally, the womanist discourse of Toni Morrison and Alice Walker; and feminist perspectives of Hélène Cixous and Luce Irigaray's theories of repression of the female body are visited to undo the discourse of the power. This study problematizes the colonizing mentality prevailing in American society through the analysis of Toni Morrison's Beloved and shows that the same colonizing manner is mirrored in the fictional Olinkan tribe in Alice Walker's Possessing the Secret of Joy. The female characters in both novels carry the traces of the brutal treatment on their bodies but strike the reader as defying characters to the manipulations of the oppressive systems through resorting to violence as a means of resistance, thereby moving from the state of passivity to activity by taking control of their lives.
Open Access
A Comparative Analysis of Critical Chain and Critical Path Project Management Methods
(İstanbul Kültür Üniversitesi, 2022) ALNEHLAWI, SAAD; Zeynep Gergin
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.
Open Access
Comparative analysis of health and safety management implementations in construction projects based on industry standards applications: Case studies of Turkey and Afghanistan
(İstanbul Kültür Üniversitesi / Lisansüstü Eğitim Enstitüsü / Endüstri Mühendisliği Ana Bilim Dalı / Mühendislik Yönetimi Bilim Dalı, 2020) Azhar, Masihullah; Gergin, Zeynep
İnşaat sektöründe, sağlık ve güvenlik standartlarının ve yönetmeliklerinin geliştirilmesi, faaliyetlerin doğası ve geçmişte yaşanan yüksek olay ve ölüm oranları nedeniyle ortaya çıkan yüksek riskler sonucunda ortaya çıkan en büyük başarılardan biridir. Mevcut araştırmanın amacı, seçilen inşaat organizasyonları için, işletme alanı ve bağlılığının getirdiği standartlara göre bir uygunluk değerlendirmesi yapmaktır. Çalışma amacının yerine getirilmesi için, ISO ve OSHA tarafından uluslararası standartlara dayalı bir sağlık ve güvenlik değerlendirme kontrol listesi geliştirilmiştir. Kontrol listesi dört ana bölümden oluşmaktadır: operasyonel veriler, sağlık ve güvenlik kayıtları, sağlık ve güvenlik planı ve sağlık ve güvenlik gereksinimlerinin uygulanması. Sağlık ve güvenlik kontrol listesini kullanan değerlendirme iki firmaya uygulanır: biri Türkiye'de, diğeri Afganistan'da. Veriler, saha ziyaretlerine ek olarak firmalar tarafından sağlanan dokümantasyon ve veriler temel alınarak toplanmaktadır. Değerlendirmenin sonuçları, Türk firmasının daha iyi sağlık ve güvenlik kayıtları ve sağlık ve güvenlik gerekliliklerinin uygulanmasını gösterdiğini, Afgan firmasının ise biraz daha iyi bir sağlık ve güvenlik planına sahip olduğunu göstermektedir. Türk ve Afgan firması için kesin puanlar sırasıyla 132 (Kabul Edilebilir) ve 119 (zayıf) olmuştur. Çalışmanın bulgularına dayanarak, her iki firmaya da projelerinde sağlık ve güvenlik planlama ve uygulamalarını ve daha sonra kayıtlarını geliştirmeleri için önerilerde bulunulmuştur. Anahtar Kelimeler: Sağlık ve güvenlik değerlendirmesi; ISO; OSHA; Türkiye; Afganistan
Open Access
The Comparative of Life Cycle Assessments Between Steel and Reinforced Concrete Structures
(İstanbul Kültür Üniversitesi, 2022) GHREIWATI, FAWZI; Erdal Coşkun
The major of this study is to understand the influence of considering the lateral load during the design face of the buildings on the 𝐶𝑂2 emissions. Since steel and reinforced concrete structures have been used in a variety of buildings in the United States in recent years, it is critical to examine and perform research on the environmental implications of the designs and materials used in those constructions. This study investigated various multi-story residential structures in the United States with similar functions for this purpose. sixteen of the buildings was constructed with a steel frame and the other thirteen with a concrete structure. Accordingly, to achieve these aims assets of 32 different structures vary considering factors such as structural type, height, location of the structure, and loading scenarios. As this study show that Concrete structures emitted 23% more CO2 than steel buildings. While the results reveal that constructing a concrete building in an A class earthquake area creates 25% higher CO2 emissions than building in a non-seismic region.
Open Access
The Contribution of IHH's Humanitarian Activities in the South and Southeast Asia to Turkiye's Foreign Policy
(İstanbul Kültür Üniversitesi, 2023) REEZA, AQMAL AHSAN MOHAMED; Hazal Papuççular Kutlu
This thesis claims that International non-governmental organizations can play a major role in having an impact in the foreign relationship of the States concerned, by having IHH's example over the state of Turkiye. NGOs began to gain high prominence in the dynamic world order that evolved especially after the end of Cold War in the late nineties. Although they don't possess powers like military power those of the states nor economic power those of the multinational companies, NGOs are powerful and influential themselves in their nature; with their uniquely developed strategies that help them to gain access to all the places and reach all kinds of communities around the world without having to resist nor resort to the use of force. These characteristics make them have an impact over the international relationship of the states. This thesis is prepared by using the sources from the field work of IHH, by genuine examples of how it has acted not only as an aid provider but also as humanitarian advocate at times and how its actions have influenced the improvement of foreign relationship of the state of Turkiye thus paving way to the finding of their positive impact over the image and soft power of the Country.
Open Access
Customer relationship management's role in boosting client's loyalty
(İstanbul Kültür Üniversitesi / Lisansüstü Eğitim Enstitüsü / Endüstri Mühendisliği Ana Bilim Dalı / Mühendislik Yönetimi Bilim Dalı, 2021) Najjar, Mohamad; Tarhan, İbrahim
Müşteri ilişkileri yönetimi (M.İ.Y.), her türlü şirketi yönetmek ve müşteri ile firma arasındaki ilişkiyi yönetmek için teknolojik sistem olarak kullanılmak üzere geliştirilmiş önemli bir akademik yaklaşımıdır. M.İ.Y. bir şirketin müşteri hizmetleri, satış sistemi ve yönetim gibi birçok departmanı arasında bağlantı kurmayı sağlamaktadır. MİY, üç ana hedefi elde etmek için yüksek kaliteyi koruyarak ürün ve hizmetlerin en iyi fiyatının nasıl sunulacağına odaklanır. Söz konusu üç hedef; Müşterinin Bağlılığı, Elde Tutma ve Geri Kazanmadır. Bu araştırmada MİY kullanımının bilinmesi vurgulanmıştır. Pazarın gereksinimlerini nasıl sağlayacağından hareketle, hedeflere ulaşmak için müşterinin istenen fiyatı ve istenen teslimat yolunu sunma ihtiyaçlarını incelenmiştir. Ooredoo, araştırmanın vaka çalışması olarak seçilen uluslararası lider telekom şirketlerinden biridir. Niteliksel anket türü, araştırmanın ana sorusunun yanıtlanmasında yararlanılacak olan firmada kritik karar alıcı 3 çalışan üzerinde yapılmıştır. Daha sonra, hipotezi onaylamak ve geçerliliğini sağlamak için 151 müşteri üzerinde nicel olarak araştırılacak bir çerçeve geliştirilmiştir. Anketin özgünlüğünü sağlamak için nicel yaklaşımın normallik, güvenilirlik, korelasyon ve regresyon analizine kaydedilmiştir. Sonuçta, tüm araştırma sorularını cevplanmış ve yorumlanmıştır. Ayrıca, bu konu ile ilgili daha sonra yapılacak çalışmalar için öneriler sunulmuştur.
Open Access
Deep Learning-Based Defect Prediction for Mobile Apps
(İstanbul Kültür Üniversitesi, 2022) JORAYEVA, MANZURA; Akhan Akbulut ; Çağatay Çatal
Mobile applications are increasing their popularity every year. However, unrecognized defects within mobile applications can affect businesses due to negative user experience. To avoid this, defects of applications should be reviewed before releases. The well-known methods for defect prevention include Review and Inspection, Walkthrough, Logging and Documentation, and Root Cause Analysis, as well as employing innovative predictive approaches using machine learning. The benefit of these prediction models is that more testing resources can be allocated to fault-prone modules effectively. This study aims to present a defect prediction model for mobile applications. We applied cross-project and used deep learning algorithms including Artificial Neural Networks (ANN), Convolutional Neural Networks (CNN), and Long-Short Term Memory (LSTM) to develop a defect prediction model and applied it to Android applications datasets. SMOTE Oversampling technique is used to balance datasets, accuracy metrics such as precision, recall, F1-score, ROC, and AUC to achieve performance, and model results are evaluated with tenfold cross-validation.
Open Access
Development of an Excel-VBA Based Decision Support System for Network Engineers
(İstanbul Kültür Üniversitesi, 2022) AONI, HUSSEIN; Okay Işık
A router is a hardware component at the heart of any computer network, as it is responsible for connecting a network to other networks in the Internet infrastructure and finding the most efficient way for data packets to reach their destination. Choosing the best router is a critical decision for network engineers because there are so many router brands, brand models, and many criteria that distinguish each router. Due to lack of managerial skills or technical issues, network engineers may choose the wrong router for their network. In this study, a Decision Support System (DSS) based on the Analytical Hierarchy Process (AHP) method, which is a multi-criteria decision making method, has been developed for the selection of the appropriate router. The DSS is built using Visual Basic for Applications (VBA) integrated with Microsoft-Excel. The proposed DSS is a user-friendly XLSM file that can be used on any computer running Microsoft-Excel. The DSS was tested based on four criteria (Cost, Reliability, Efficiency and Port counts) and four brand alternatives (Cisco, Juniper, Huawei and MikroTik). The developed DSS accompanies the decision maker's (DM) comparison process of criteria and the alternative routers according to each criterion, and finally recommends the most suitable router. In addition, if the comparison matrix of DM is inconsistent, the proposed DSS makes minor changes to the original preferences of DM, ensuring a zero inconsistency rate. The proposed method has been tested with data sets published in the literature, and its advantages over other methods to reduce inconsistency have been demonstrated.
Open Access
Earthquake Performance and Cost Comparison of Core Wall and Tunnel Formwork RC High Rise Buildings
(İstanbul Kültür Üniversitesi, 2022) AMINI, MOHAMMAD IBRAHIM; Mustafa Cömert
This study investigates the earthquake performance and cost comparison of core wall and tunnel formwork of 30 story high-rise buildings. Floor and roof systems in core wall buildings are designed to carry gravity loads and transfer these loads to the supporting beams, columns, and to footings. Furthermore, they play a key role in distributing earthquake induced loads to the lateral load resisting systems such as inner cores and columns by diaphragm action. And in tunnel formwork buildings the flat slabs are designed to carry gravity loads and directly transfer them to the shear walls and finally transferred them to the footings. This kind of buildings systems resisting earthquake-induced loads with the help of flat slab and shear walls only, without any beams and columns. Core wall building and tunnel formwork building systems are very commonly used as lateral load resisting systems which have shown very good results in past earthquakes. In the present research, the modelling of (G+29) story RC residential high-rise buildings was performed in ETABS software then the data have been transferred to PERFORM-3D analysis software for analysis purposes. Nonlinear dynamic (Timehistory) analysis has been performed, according to (ASCE 7-16) and (ACI-318-19) codes and according to (PEER TBI,2017), and (LATBSDC,2020) guidelines. The results in terms of design base shear, building periods, different mode shapes maximum displacements, drift, drift ratio, moment curvature relationship, and costs of the buildings obtained.