Deniz İren

Center for Actionable Research of the Open University · CAROU Information Sciences

Immersive learning systems (ILSs) allow the recreation of an idealized world in virtual environments, providing experiences that can help learners in learning skills realistically. These environments are typically supported by immersive technologies to improve immersion and provide real-time feedback. However, designing an ILS is a strenuous proces...

Training facial emotion recognition models requires large sets of data and costly annotation processes. To alleviate this problem, we developed a gamified method of acquiring annotated facial emotion data without an explicit labeling effort by humans. The game, which we named Facegame, challenges the players to imitate a displayed image of a face t...

The recent pandemic has forced most educational institutions to shift to distance learning. Teachers can perceive various non-verbal cues in face-to-face classrooms and thus notice when students are distracted, confused, or tired. However, the students’ non-verbal cues are not observable in online classrooms. The lack of these cues poses a challeng...

So far, the qualitative and quantitative analysis of bainite has to be carried out by a metallography specialist and often causes ambiguities coming along with poor reproducibility. Possible reasons for a high variance in the description of bainite originate from different expert opinions given the high variety in the appearance of bainite in micro...

Many studies have demonstrated the positive impact of self-tracking technology on people’s health and wellbeing. Research on the effects of the tools for tracking moods to create awareness of people’s affective health is also gaining attention. In addition, studies show that people are open to using tools that contribute to sharing their moods and...

Following the COVID-19 pandemic, as the user-base of online synchronous communication systems skyrocketed, the shortcomings of synchronous online learning systems became more visible. Any attempt to overcome these shortcomings should be considered worthwhile due to the magnitude of potential impact. Improving the quality and addressing the shortcom...

The coordination of psychomotor skills requires deliberate practice and techniques, all of which are typically taught in a physical setting, where instructions and timely feedback are given by the teachers. However, doing so remotely is commonly inefficient and ineffective, therefore, hindering the learner's progress. Sensors and immersive technolo...

Following the COVID-19 pandemic, as the user-base of online synchronous communication systems skyrocketed, the shortcomings of synchronous online learning systems became more visible. Any attempt to overcome these shortcomings should be considered worthwhile due to the magnitude of potential impact. Improving the quality and addressing the shortcom...

Training psychomotor skills for human-robot interaction is generally done with a human trainer educating the human on how to handle the robot effectively and interact with it safely and efficiently. The dynamic interaction between a robot and a human requires complex machine learning algorithms to be modeled, and these algorithms rely on a large am...

Training psychomotor skills for human-robot interaction is generally done with a human trainer educating the human on how to handle the robot effectively and interact with it safely and efficiently. The dynamic interaction between a robot and a human requires complex machine learning algorithms to be modeled, and these algorithms rely on a large am...

The coordination of psychomotor skills requires deliberate practice and techniques, all of which are typically taught in the physical setting, where instructions and timely feedback are given by the teachers. However, doing so remotely is commonly ineffective and therefore, affecting the learner’s progress to achieve their goal in a shorter time....

Algorithmic Decision Making (ADM) has permeated all aspects of society. Government organizations are also affected by this trend. However, the use of ADM has been getting negative attention from the public, media, and interest groups. There is little to no actionable guidelines for government organizations to create positive impact through ADM. In...

Studying steel microstructures yields important insights regarding its mechanical characteristics. Within steel, microstructures transform based on a multitude of factors including chemical composition, transformation temperatures, and cooling rates. Martensite-austenite (MA) islands in bainitic steel appear as blocky structures with abstract shape...

Digital twins. A digital twin is a virtual copy of a physical system. It is a replica that lives inside a computer. By exchanging data with the real-life system via sensors, the digital twin displays the current state of the actual one. Moreover, the digital twin behaves similarly to the physical system which makes it possible to run simulations, a...

Purpose A vast body of literature has documented the negative consequences of stress on employee performance and well-being. These deleterious effects are particularly pronounced for service agents who need to constantly endure and manage customer emotions. The purpose of this paper is to introduce and describe a deep learning model to predict in r...

Purpose With the advent of increasingly sophisticated AI, the nature of work in the service frontline is changing. The next frontier is to go beyond replacing routine tasks and augmenting service employees with AI. The purpose of this paper is to investigate whether service employees augmented with AI-based emotion recognition software are more eff...

Purpose Identifying handovers is an important but difficult to achieve goal for companies as handovers have advantages allowing for specialisation in processes as well as disadvantages by creating erroneous interfaces. Design/methodology/approach Conceptualisation of a method based on theory and evaluation with company data using a process model r...

Solar panels are installed by a large and growing number of households due to the convenience of having cheap and renewable energy to power house appliances. In contrast to other energy sources solar installations are distributed very decentralized and spread over hundred-thousands of locations. On a global level more than 25% of solar photovoltaic...

Contemporary organizations need to adapt their business processes swiftly to cope with ever-changing requirements. Requirement changes originate from a wide variety of sources. Business analysts gather these requirements, resolve conflicts, analyze impacts, and prepare actionable improvement plans. These tasks require a comprehensive knowledge of b...

How can social media be used to reveal latent social and collective perspectives on music? Our work addresses this question by introducing a Twitter dataset surrounding the Top 2000, a yearly national broadcasting event in The Netherlands. The Top 2000 is recognised as a valuable case study into the role of music as a social nostalgia-inducing phen...

Crowdsourcing is a model which allows practitioners to access a relatively inexpensive and scalable workforce. However, due to loose worker-employer relationships, skill diversity of the crowd and anonymity of participants, it tends to result in lower quality compared to traditional ways of doing work. Thus crowdsourcing practitioners have to rely...

Even though crowdsourcing was introduced as a novel business model for risk prone entrepreneurs, in time it has become a valid means of producing value in large scale projects as well. However due to loose employee - worker relationship, quality continues to be a serious issue for crowdsourcing. Therefore, various quality assurance mechanisms are u...

Crowdsourcing is a business model which allows practitioners to access a rather cheap and scalable workforce. However, due to loose worker-employer relationships, skill diversity of the crowd and anonymity of participants, it tends to result in lower quality compared to traditional way of doing work. Thus crowdsourcing practitioners use certain tec...

Cloud computing and crowdsourcing are growing trends in IT. Combining the strengths of both machine and human clouds within a hybrid design enables us to overcome certain problems and achieve efficiencies. In this paper we present a case in which we developed a hybrid, throw-away prototype software system to solve a big data cleaning problem in whi...

Cloud computing and crowdsourcing are growing trends in IT. Combining the strengths of both machine and human clouds within a hybrid design enables us to overcome certain problems and achieve efficiencies. In this paper we present a case in which we developed a hybrid, throw-away prototype software system to solve a big data cleaning problem in whi...

This technical report provides an overview of cost models of major quality assurance mechanisms which are used in crowdsourcing along with a brief description of cost of quality approach to cost analysis. An experiment was conducted aiming at verifying cost of quality models and comparing quality levels offered by various quality assurance mechanis...

Crowdsourcing is a business model which allows practitioners to access a rather cheap and scalable workforce. However, due to loose worker-employer relationships, skill diversity of the crowd and the anonymity of the participants, it tends to result in lower quality compared to traditional way of doing work. Thus crowdsourcing practitioners use cer...

Teknolojinin çok hızla geliştiği bir endüstride, yazılım geliştiren organizasyonlar (YGO) ve bilgi teknolojileri alanında çalışan kuruluşların (BTK), sürekli artan rekabete ayak uydurmak ve rekabetçi avantaj elde etmek için doğru bilgiyi elde etmeleri, bu bilgiyi etkin kullanmaları ve bilginin uygun şekilde evrim geçirmesini sağlayarak takip eden p...

BPM software automation projects require different approaches for effort estimation for they are developed based on business process models rather than traditional requirements analysis outputs. In this empirical research we examine the effect of various measures for BPMN compliant business process models on the effort spent to automate those model...

Bu deneyim bildirisi, ODTÜ Bütünleşik Bilgi Sistemi Projesi kapsamında, Süreç Yönetim Alt Sistemi tarafından ODTÜ’nün Üniversite Süreç Haritası'nda (ÜSH) yer alan, akademik ve idari birimleri ile bunlara bağlı olan bütün alt birimleri kesip geçen, uçtan uca iş süreçlerinin tanımlanması ve otomasyona alınması aşamalarında yapılan ve yapılması p...

Çevik yazılım geliştirme yaklaşımları son zamanlarda büyük bir hızla yaygınlaşmaktadır. Geliştirilen bilgi teknolojileri ürün ve hizmetlerinin bireyler tarafından etkili ve verimli bir biçimde kullanılamama sebeplerinin tespit edilmesi ve ortadan kaldırılması amacını güden kullanılabilirlik çalışmalarının yürütülmesi proje başarısı üzerinde etki sa...