Nergiz Cagiltay

Atilim University · Department of Software Engineering

Bioinformatics, which has developed rapidly in recent years with the collaborative contributions of the fields of biology and informatics, provides a deeper perspective on the analysis and understanding of complex biological data. In this regard, bioinformatics has an interdisciplinary background and a rich literature in terms of domain-specific st...

System design is recognized as one of the most critical components of a software system that bridges system requirements and coding. System design also has a significant impact on testing and maintenance activities, and on further improvements during the lifespan of the software system. Software design should reflect all necessary components of the...

Today, earth sciences engineering education programs face with serious problems. It is often not possible to provide experience on different geographical environments or materials. Considering these problems of earth science related engineering education programs, virtual reality environment potentially can provide technology enhanced training alte...

Massive Open Online Courses (MOOCs), capable of providing free (or low cost) courses for millions of learners anytime and anywhere, have gained the attention of researchers, educational institutions, and learners worldwide. Even though they provide several benefits, there are still some criticisms of MOOCs. For instance, MOOCs’ high dropout rates o...

Today’s dynamic distance learning environments offer a flexible, comfortable, and lifelong learning experience, independent of space and time. In this way, it also supports and develops existing traditional training programs. The increasing importance of knowledge, skills and learning in today’s technological life cycle has led to an increase and d...

As it covers a wide spectrum, the research literature of human-computer interaction (HCI) studies has a rich and multi-disciplinary content where there are limited studies demonstrating the big picture of the field. Such an analysis provides researchers with a better understanding of the field, revealing current issues, challenges, and potential re...

Surgical skill-level assessment is key to collecting the required feedback and adapting the educational programs accordingly. Currently, these assessments for the minimal invasive surgery programs are primarily based on subjective methods, and there is no consensus on skill level classifications. One of the most detailed of these classifications ca...

Despite providing several insights into visual attention and evidence regarding certain brain states and psychological functions, classifying eye movements is a highly demanding process. Currently, there are several algorithms to classify eye movement events which use different approaches. However, to date, only a limited number of studies have ass...

Eye movements provide very critical information about the cognitive load and behaviors of human beings. Earlier studies report that under normal conditions, the left- and right-eye pupil sizes are equal. For this reason, most studies undertaking eye-movement analysis are conducted by only considering the pupil size of a single eye or taking the ave...

These days, eye-tracking is one of the promising technologies used in different fields. However, studies involving eye-tracking are rare in the field of endo-neurosurgery. This study aims to use this technology to promote our understanding of the effect related to computer-based instructional materials on mental workload of surgical residents. Four...

Today, virtual simulation environments create alternative hands-on practice opportunities for surgical training. In order to increase the potential benefits of such environments, it is critical to understand the factors that influence them. This study was conducted to determine the effects of training, used-hand, and experience, as well as the inte...

Software engineering is a data-driven discipline and an integral part of data science. The introduction of big data systems has led to a great transformation in the architecture, methodologies, knowledge domains, and skills related to software engineering. Accordingly, education programs are now required to adapt themselves to up-to-date developmen...

Background: Endoscopic surgeries have become an alternative for open procedures whenever possible. For such types of operations, surgeons are required to gain several skills, whose development needs hands-on practice. Accordingly, gaining these skills today is a challenge for surgical education programs. Despite the development of several technolo...

Project planning is a critical activity in the software development life cycle. At the early stages of a project, the managers need to estimate required time, effort and cost to plan, track and then to deliver the project successfully. Many studies have attempted to provide methods for precise software cost estimation. The current software cost est...

In academic studies, the discussion section is important in which the effect of the results of the study on the existing literature is highlighted and interpreted. The aim of the current paper is to compare the discussion sections of Turkish and American PhD dissertations in the field of Educational Technologies, taking into consideration the basic...

Endoscopic surgery procedures require specific skills, such as eye-hand coordination to be developed. Current education programs are facing with problems to provide appropriate skill improvement and assessment methods in this field. This study aims to propose objective metrics for hand-movement skills and assess eye-hand coordination. An experiment...

Navigation control skills of surgeons become very critical for surgical procedures. Strategies improving these skills are important for developing higher-quality surgical training programs. In this study, the underlying reasons of the navigation control effect on performance in a virtual reality-based navigation environment are evaluated. The parti...

The advantage of simulation environments is that they present various insights into real situations, where experimental research opportunities are very limited—for example, in endoscopic surgery. These operations require simultaneous use of both hands. For this reason, surgical residents need to develop several motor skills, such as eye-hand coordi...

Surgical residents of endo-neurosurgery are required to develop several surgical skills such as eye-hand coordination, ability to use both hand coordination, and depth perception. During the process of gaining these skills, there are several effective factors on the individual performance such as gender, nature of the scenarios and hand condition t...

This paper presents an application of eye tracking approach to cognitive task analyses of the trainees in a simulation environment. Eye-tracking technology has been shown environments. In that sense in the earlier studies it is stated that, novice surgeons often hand-eye coordination problems, limited work space and the lack of tactile sensation. T...

Understanding the effect of factors such as gender on surgical skill performance is critical to better organize and develop appropriate skill-based instructional systems. However, in the literature there are not many studies conducted to investigate the effect of gender differences on task performance for beginners on minimal invasive surgery. In t...

Nowadays, surgical education programs are faced with serious problems. Simulation environments provide alternative try-and-error type of educational alternatives for these programs. The earlier studies report that computer-based simulation environments are potential technologies to enhance the current educational outcomes as well as lower the costs...

Giriş ve Amaç: TÜBİTAK tarafından desteklenen (113S094) ve Gazi Üniversitesi Beyin ve Sinir Cerrahisi yürütücülüğünde yönetilen bir proje kapsamında, ülkemizde faaliyet gösteren ve Türk Nöroşirürji Derneğine kayıtlı Beyin ve Sinir Cerrahisi uzmanlarının yüksek teknolojili cerrahi cihazlara ulaşım seviyelerinin belirlenmesi ile birlikte özel olarak...

Simülasyon Teknolojisi ile Zenginleştirilmiş Endo-Nöroşirurji Eğitimi Modeli Hipofiz Cerrahisi İçin Örnek Bir Çalışma Cagiltay, N. E., Hanalioğlu, S., Isikay, I., Berker, M. Amaç: Endo-Nöroşirurji eğitimi maliyeti yüksek, uzun ve zahmetli bir süreci kapsamaktadır. Literatürdeki çalışmalar, eğitim ve öğretim ortamlarında deneme-yanılmaya yönelik zen...

Today, introduction of the microscope and later the extensive use of the video camera have changed the way operations are performed which have replaced the direct vision by a video image. These types of surgical techniques are generally called as minimal invasive surgery (MIS). Laparoscopic surgery and endoscopic surgery fall in this category. Thes...

Endoneurosurgery consists of neurological operations performed using an endoscope. Unlike traditional surgery operations, natural body cavities are used as entry points, hence inflicting minimum damage to the patient. These operations are considered as minimal invasive surgeries (or MIS), where surgeons see the operation area in two-dimensional vie...

Surgical education is an important field in medicine that is directly related with human health. Generally, this education is a time consuming and difficult process. Since surgeons will perform a job that significantly effects human life and quality of living with no room for error, the mentioned education has dramatic impact on patients, on their...

Defining tasks in serious games are important for measuring the benefits of gaming environment for the player. For this the contribution of the domain experts for the game design is essential. Today, in order to improve the level of communication between domain experts and software system technicians to better define the game requirements according...

Minimal invasive surgery (MIS), performed by techniques such as laparoscopic and endoscopic approaches are becoming very popular because of their minimum damage on patient and improved success rates. Since those operations have some limited access to the operational area, the surgeons who are expected to perform those operations need some specific...

Recent studies have shown that, there is a need to propose new approaches and educational methods in order to address current problems of engineering education programs. This study summarized the implementation of a real-life term project and Topic Study concepts in an engineering education course. The curriculum of this course is organized to prov...

In engineering education, it is very critical to combine theoretical courses with practices/laboratory works. Ideally, laboratory activities should be repeated as many times as the learners wish. However, face-to-face laboratory training have many limitations both at teacher and learner sides. Namely, it requires more teachers and supporting person...

Göz izleme teknolojisi cerrahi simülasyon ortamlarındaki kursiyerlerin davranışlarını daha iyi anlamak için kullanılmaktadır. Bu konuda yapılan araştırmalar, acemi cerrahların, sınırlı görme alanı, el-göz koordinasyon sorunları, sınırlı çalışma alanı ve dokunsal duyu eksikliğinden dolayı genellikle bir ameliyat aleti konumunun doğru algılanışından...

Cerrahi performans üzerinde cinsiyet gibi faktörlerin etkisinin anlaşılması, uygun beceri temelli öğretim sistemlerini daha iyi organize etmek ve geliştirmek açısından kritik önem taşır. Bununla birlikte, literatürde cinsiyet farklılıklarının minimal invaziv cerrahi konusunda yeni başlayanlar için görev performansı üzerine etkisini araştırmak için...

E-hizmetler günümüzde ticari işlemlerin süresini kısaltmakta ve maliyetlerini azaltmaktadır. Dolayısıyla gerçek bir devrim olarak nitelendirilebilirler. Genellikle e-hizmetler, yalnızca bir bilgisayara ve işi gerçekleştirmek için modern bir iletişim aracına ihtiyaç duyar. Ancak bu hizmetlerin yerine getirilmesi konusunda güven son derece önemli bir...

Günümüzde cerrahi eğitim programları ciddi sorunlarla karşı karşıyadır. Simülasyon ortamları, bu programlar için alternatif deney ve hata türünde eğitim teknolojileri sağlar. Daha önceki çalışmalar, bilgisayar tabanlı simülasyon ortamlarının, mevcut eğitim sonuçlarını arttırmak ve bu eğitim programlarının maliyetlerini ve sürelerini düşürmek için p...

Computer programming provides skills on critical thinking, problem solving, computational thinking and design of new systems. Nowadays programming skills received widespread attention for different age groups and occupational education programs to better prepare the future citizens. However, introducing programming concepts in an appropriate way to...

Kamerayı yerleştirme işlemi, endoskopik cerrahi prosedürleri için geliştirilmesi zor, hata eğilimli becerilerden birisidir. Bu yeteneklerin daha iyi bir şekilde kazandırılması amacıyla bazı öretim teknolojileri stratejilerinin geliştirilmesi önemlidir. Bu çalışmada, navigasyon işaretçisinin cerrahi performans üzerindeki etkisi araştırılmıştır. Bu a...

Computer programming provides skills on critical thinking, problem solving, computational thinking and design of new systems. Nowadays programming skills received widespread attention for different age groups and occupational education programs to better prepare the future citizens. However, introducing programming concepts in an appropriate way to...

More than 29 million women in Turkey are not involved in business life. The female population involved in business life seems to be working in the service sector at large. Especially educated women are considered to have a serious work force and economic loss because they have children and are withdrawn from work due to various family reasons. Ther...

Nowadays, programming skills are receiving widespread attention for different age groups alongside occupational education programs to better prepare individuals for their future careers. However, introducing programming concepts in an appropriate manner is a challenge in higher education. The main assumption of this study is that enhancing the clas...

Understanding the performance on both-handed tasks, such as endoscopic surgery, is critical to better organize and develop appropriate instructional systems to improve the necessary skills of surgeons. However, in the literature, only a limited number of studies have investigated the effect of handedness on both-handed task performance. This study...

Today, with the advancements in the eye-tracking technology, it has become possible to follow surgeons’ eye movements while performing surgical tasks. Despite the availability of studies providing a better understanding of surgeons’ eye movements, research in the particular field of endoneurosurgery is very limited. Analysing surgeons’ eye-movement...

The education programme of surgery has unique problems. In this study, first, a literature review is conducted to cover the studies found in the literature reporting on the problems of surgical education. Additionally, a survey study is conducted with 31 participants, who are either currently enrolled in endoscopic surgery education programmes in T...

Akademik çalışmalarda tartışma bölümü, çalışmanın sonuçlarının alan yazına etkisinin, katkısının ortaya konulduğu ve yorumlandığı önemli bir bölümdür. Bu çalışmanın amacı, alan yazında etkili bir tartışma bölümünde bulunması gereken temel özellikler göz önünde bulundurularak, Türkiye ve ABD'de Eğitim Teknolojileri alanında yapılan doktora tezlerini...

Yazılımların tüm kullanıcılar tarafından erişilebilir olmasını sağlamak önemli bir insan bilgisayar etkileşimi konusudur. Ancak alanyazında bu konuyu ele alan çalışma sayısı son derece kısıtlıdır. Bu çalışmanın amacı mühendis adaylarının engelli kullanıcılara yönelik yazılım geliştirme farkındalıklarını anlamaktır. Çalışmada yazılım mühendisliğine...

Background: In neurosurgery education, there is a paradigm shift from time-based training to criterion-based model for which competency and assessment becomes very critical. Even virtual reality simulators provide alternatives to improve education and assessment in neurosurgery programs and allow for several objective assessment measures, there ar...

The use of simulation techniques in medical education is an emerging topic in surgical training process, and there are limited number of studies found in this field in our country and the world. Recently, using the machine learning techniques in surgical training constitutes a new area of research. By using these techniques, cost-efficient educatio...

The use of simulation techniques in medical education is an emerging topic in surgical training process, and there are limited number of studies found in this field in our country and the world. Recently, using the machine learning techniques in surgical training constitutes a new area of research. By using these techniques, cost-efficient educatio...

Neuronavigation systems are developed to support the brain surgery operations. Because of its complex anatomical structure, the neurosurgery is a risky and critical operation. The surgeon is required to perform the operation in a very small area with very restricted movements. The neuronavigation systems are developed to help the surgeon during the...

Today, surgical education environments have serious problems. Nowadays, a large part of surgical skills are learned in the operating room while operating on patients. As technology developed, surgical field has been supported by a video image, by using camera named as endoscope and thin surgical devices instead of fingers. In order to make operatio...

As technology enhances, the new techniques for surgical operations are also developed. For instance endoscopic surgery is a new alternative of open surgery when it is possible. In this technique, the surgeon performs the operation by using a camera named as endoscope and special operational tools in order to make the operation by using small enter...

With the improvements of technologies in the field of surgery, minimally invasive surgical (MIS) technique have become the standard of surgical care for many patients which is performed through the camera view of the operational area from small entry points to the patients’ body. Unlike open surgery, MIS is, by its nature, a technique that is very...

Data mining algorithms have been applied in various fields of medicine to get insights about diagnosis and treatment of certain diseases. This gives rise to more research on personalized medicine as patient data can be utilized to predict outcomes of certain treatment procedures. Accordingly, this study aims to create a model to provide decision su...

The performance of the left- and right-hands of a person may be different from each other. In general, people use one hand with a superior performance compared to the other hand where that hand is preferred for performing daily activities. It is critical to understand their preference for right or left hand use, especially in cases where the skills...

Nowadays, neuronavigation systems are used in brain surgery procedures, known as a technology to help the surgeon during the operational period. However, the surgeons have faced several problems with the existing systems. Some of these problems are related to the systems software and user interfaces. In this study, such problems are examined and th...

Decision making process is crucial in several stages of clinical procedures. On the other hand, there are not many studies showing the implications of decision support systems in clinical environments. Hence, adaptation of Decision Support Systems to clinical environment is getting more important as we can collect more data through sensors and yet...

Decision making process is crucial in several stages of clinical procedures. On the other hand, there are not many studies showing the implications of decision support systems in clinical environments. Hence, adaptation of Decision Support Systems to clinical environment is getting more important as we can collect more data through sensors and yet...

Decision making process is crucial in several stages of clinical procedures. On the other hand, there are not many studies showing the implications of decision support systems in clinical environments. Hence, adaptation of Decision Support Systems to clinical environment is getting more important as we can collect more data through sensors and yet...

With the emergence of new technologies, there is an increasing number of studies to improve healthcare delivery quality and health services. The studies have shown that the focus should be on integrated, sharable and personalized healthcare solutions which requires usage of patient data as much as possible for fast and correct diagnosis and care. H...

While there are many studies regarding utilization of Haptic feedback to enhance desktop GUIs and utilizing Haptic devices as additional interfaces to improve performance in current interaction techniques, there are not many studies that uses Haptic device as a primary input device. In this study, we present an experimentation conducted with 30 stu...

With the advent of technology, new interaction modalities became available which augmented the system interaction. Even though there are vast amount of applications for the ubiquitous devices like mobile agents, smart glasses and wearable technologies, many of them are hardly preferred by users. The success of those systems is highly dependent on t...

Serious games are a popular concept in both the research and commercial areas. It is agreed that the concept refers to the use of computer games without the main purpose of pure entertainment. In addition to being entertaining, they have some additional educational or training objectives as well. Serious games are used in different areas such as mi...

Serious games are a popular concept in both the research and commercial areas. It is agreed that the concept refers to the use of computer games without the main purpose of pure entertainment. In addition to being entertaining, they have some additional educational or training objectives as well. Serious games are used in different areas such as mi...

Design diagrams employed in software development process deliver groups of associated information about the software to be developed. They enhance the perception of the software engineers helping them better understand the software system at various levels of system development process. Today’s fast-changing business environment necessitates the re...

The number of mobile applications in mobile market has rapidly increased as new technology and new devices are emerging at remarkable speed which shows mobile applications have an important role in every field of our life. Among those, even some of the mobile applications have a long time life as end-users use those effectively, some of them fail t...

Surgical education through simulation is an important area to improve the level of education and to decrease the risks, ethical considerations and cost of the educational environments. In the literature there are several studies conducted to better understand the effect of these simulation environments on learning. However among those studies the h...

Touch and feel senses of human beings provide important information about the environment. When those senses are integrated with the eyesight, we may get all the necessary information about the environment. In terms of human-computer-interaction, the eyesight information is provided by visual displays. On the other hand, touch and feel senses are p...

Today technological improvements provide several alternatives and opportunities for improving traditional educational systems. However, integrating these technologies in an appropriate and successful way into the curriculum of traditional systems is a challenge. This work presents the enhancements added to an undergraduate course on Digital Communi...

Considering the role of games for educational purposes, there has an increase in interest among educators in applying strategies used in popular games to create more engaging learning environments. Learning is more fun and appealing in digital educational games and, as a result, it may become more effective. However, few research studies have been...

Designing and understanding of diagrammatic representations is a critical issue for the success of software projects because diagrams in this field provide a collection of related information with various perceptual signs and they help software engineers to understand operational systems at different levels of information system development process...

Ever since mobile applications were developed and became popular, they have started to take part in almost every field of our lives. Healthcare is one of the most popular fields that mobile applications have become a part of. However, development of mobile healthcare applications requires an inter-disciplinary work on which people from different do...

Using computers for assessment can provide several benefits for educators and test-takers. However, in the literature, there is no consensus on the equivalence of paper-and-pencil (P&P) and computer-based test (CBT) environments. Additionally, these studies fail to address the engineering domain. Our main assumption is that, if we could define the...

One of the main objectives of the software engineers is to provide software related solutions for social problems and to increase the availability of social welfare. In that sense, the quality of the software is directly related to address the users' needs and their level of satisfaction. To reflect user requirements to the software processes, the...

In this study, a curriculum model including recent developments and technologies in the Radio Frequency (RF) and Microwave Engineering field by using a blended approach is proposed. This study covers the description of the content of theoretical and hands on applications, the integration model of the technological tools into the proposed curriculum...

Introduction to programming languages course is an important course for several engineering disciplines such as computer engineering, software engineering, information systems engineering, electrical engineering and industrial engineering. However, in the first year of their engineering programs, students as well as the instructors are facing with...

This work presents a case study about how action research (AR) has been conducted in developing a real-life educational system. An explanation is given of the modified implementation of the classical AR methodology, based on the requirements of a remote laboratory system developed for the vocational training of students in higher education. This st...