Cigdem Altin Gumussoy

• Doctor of Engineering
• Istanbul Technical University

This study aims to conceptualize mobile application usability based on Google’s mobile application development guidelines. A survey instrument is developed and validated to measure the concepts evolved from conceptualization. A three-step formal methodology has been used like domain development, survey instrument development, and evaluation of meas...

Uncertainties and changes in software requirements have compelled companies to become more agile in software development projects. To keep pace with the agile environment, companies incorporate agile software development methodologies into their projects. However, the way that the agile methodology is implemented may determine the success of the pr...

OTT (over-the-top) streaming is a subscription-based video service model that delivers video-on-demand content, films, and series directly to end-users over the Internet, bypassing the need for traditional satellite receiver systems. The most popular OTT service providers include Netflix, Hulu, Amazon Prime, and Disney+. During the COVID-19 pandemi...

The aim of this study is to conceptualize website usability and develop a survey instrument to measure related concepts from the perspective of end users. We designed a three-stage methodology. First, concepts related to website usability were derived using content analysis technique. A total of 16 constructs measuring website usability were define...

In recent years, many companies have aimed to increase the motivation and performance of their employees by using gamification to reach their business goals. This study investigates the factors affecting the sales employees’ adoption of gamification by extending the Technology Acceptance Model (TAM). A research model is constructed by including sub...

Customer relationship management (CRM) and marketing analytics is a combination of techniques, technologies, and strategies that serve to create and deliver value to profitable customers. It involves internal business processes and functions (such as marketing, sales) as well as external influences (such as competitors). CRM systems collect, analyz...

This study aims to design a usability test enhanced with subjective usability evaluation methods (concurrent think-aloud, post-task and posttest questionnaires) and objective usability evaluation methods (eye-tracking, emotion recognition and logging technologies). Furthermore, the relationships between the subjective metrics such as task difficult...

Purpose Competitive universities try to improve their reputation to attract the best students as university reputation is a significant factor affecting the decision of a student. In this context, universities need a systematic management plan to improve their reputation among the stakeholders. This study aims to identify the factors affecting univ...

Set‐top box (STB) is a special interface device that is connected to a TV and allows digital content to be received, decoded, and displayed on the TV. The new features added to STB&TVs increase the complexity of the systems and lead to usability problems. This study proposes a set of usability heuristics and their corresponding criteria specific to...

This study aims to reveal the factors affecting the use of second-hand shopping through a mobile application. An extended Technology Acceptance Model (TAM), including economic advantage, natural conservation, sustainable consumption, trust, convenience, and subjective norms is constructed. A total of 318 questionnaires are collected from the users...

E-reverse auction is an online, real-time dynamic auction between a buyer organization and a group of pre-qualified suppliers. There occurs a competitive environment, which can lead to great price reductions for the items auctioned. In addition, cycle-time savings for buyers and suppliers, growing markets, accessing to a larger pool of suppliers ca...

Today, advances in information technology have increased the importance of knowledge day by day. Possessing knowledge and managing knowledge effectively are very important for firms to gain competitive advantage in rapidly changing environment conditions. Knowledge management helps to a firm to achieve its organizational objectives by making the be...

Today, advances in information technology have increased the importance of knowledge day by day. Possessing knowledge and managing knowledge effectively are very important for firms to gain competitive advantage in rapidly changing environment conditions. Knowledge management helps to a firm to achieve its organizational objectives by making the be...

Group-buying websites are the virtual environments that the firms can sell products or services to their customers using coupons that offer price discounts. For the continuity of the firms, maintaining current customers is more important and cost effective than finding new customers. A research model is developed to identify the determinants of reu...

As the diversity of services in the financial market increases, it is critical to design usable banking software in order to overcome the complex structure of the system. The current study presents a usability guideline based on heuristics and their corresponding criteria that could be used during the early stages of banking software design process...

The importance of knowledge has been increasing day by day as it is considered as one of the strategic resource for firms. Organizations try to obtain knowledge and manage knowledge effectively to gain competitive advantage in a rapidly changing environment. Knowledge management effectiveness depends on capacity of firms about creating new knowledg...

The virtual item auctioning system (VIAS) has economic potential as millions of online players trade their virtual items in an auction-based environment. However, little empirical research has been conducted about understanding the factors affecting the decision to use the VIAS in online games. To address this gap, the current study uses the techno...

The purpose of this study is to examine the effects of organizational learning, market orientation, and transformational leadership on the organizational innovation and firm’s performance amongst the firms performing in Turkey. Using LISREL, structural equation-model, the data gathered from 330 employees were used to identify the variables that sig...

This study aims to identify the factors affecting turnover intention among IT professionals. A model was developed with the inclusion of five-factor model of personality traits, job satisfaction, career satisfaction, career self-efficacy and career commitment. A total of 430 responses were gathered from IT professionals working in Turkey. Structura...

This study aims to identify factors affecting the decisions of users in Turkey to continue using mobile banking. A research model was developed to identify the relationships among the relevant constructs: continued usage intention, satisfaction, trust, flow, task-Technology fit (TTF) and service quality-E-S-QUAL scale. A survey methodology was used...

This study aims at identifying the factors affecting the intention to use personal digital assistant (PDA) technology among physicians in Turkey using an extended Technology Acceptance Model (TAM). A structural equation-modeling approach was used to identify the variables that significantly affect the intention to use PDA technology. The data were...

The aim of this study is to determine the factors affecting blue-collar workers’ intention to use a web-based learning system in the preimplementation phase in the automotive industry. For that purpose an extended technology acceptance model (TAM) is proposed, which included factors such as image, perceived content quality, and perceived system qua...

A modified SERVQUAL approach, including usability as the sixth service quality dimension, has been used to evaluate the effect of service quality dimensions on perceived overall quality, customer satisfaction, and return intention for four different hospital types operating in Turkey: public, private, university, and military hospitals. The propose...

The use of care labels is more effective and entails lower additional costs for manufacturers compared with using written instructions. Considering that the comprehension of care labels is highly dependent on their symbols, the process of symbol comprehension becomes very important. This study is conducted to shed light on the performance of Turkis...

With the growing usage of the Internet, the demand for online health care information and advice as well as the number of health‐related Web sites are increasing. In case of online health information and advice, the user interface replaces face‐to‐face communication. To ensure that the users' needs are met, it is critical to balance functionality a...

Purpose The present study aims to examine the effect of learning orientation (commitment to learning, shared vision, open‐mindedness) on the product innovation performance (product innovation efficacy and efficiency) of companies in Turkey. Design/methodology/approach A structural equation‐modeling approach was applied to identify the variables th...

The paper evaluation for a special issue is a lengthy process, which requires the collective collaboration of authors, reviewers and editors. In the first step, the evaluation criteria specific to each journal are determined by the editorial board and then reviewers make judgements whether to accept or reject the submitted manuscript by considering...

This study aims to understand factors affecting e-reverse auction usage in companies by comparing three models: Technology Acceptance Model (TAM), Theory of Planned Behavior (TPB) and the integrated model (integration of TAM and TPB). The comparison of the models will answer two important questions: First, with the integration of the models, whethe...

Customer behavior is a multi-stage decision process in an e-auction in which each step is critical to achieve success in e-auctions. The first step is the potential customer's decision to adopt and use the e-auction system. It is important to understand the factors that affect the use of e-auction systems. Researchers have identified general reason...

Purpose The purpose of this paper is to explore the effects of stressors (role ambiguity, role conflict, work‐overload, work‐family conflict), job stress, job satisfaction and organizational commitment on the information technology (IT) professionals' intention to quit their jobs in Turkey. Design/methodology/approach A structural equation modelin...

This study aims to identify, using an extended Technology-Acceptance Model (TAM), the factors affecting the decision of using a web-based learning system among blue-collar workers in the automotive industry. A structural equation–modeling approach was applied to identify the variables that significantly affect the decision of using the system. Usin...

Purpose The purpose of this paper is to apply Value Added Intellectual Coefficient (VAIC™) of Pulic to compare quoted information technology and communication companies on the Istanbul Stock Exchange (ISE), in terms of intellectual capital efficiency. This study also examines VAIC™, and its components' impact on company performance. Design/methodo...

Purpose The purpose of this study is to determine the relative importance of the usability and functionality factors for online auction and shopping web sites from the perspective of young consumers. Design/methodology/approach The Analytical Network Process (ANP) was used to analyse the relative importance of the usability and functionality facto...

Turnover among information technology (IT) professionals still remains a challenge for many companies. IT professionals suffer from high stress levels. This, in turn, may lead to burnout and result in quitting their jobs. Knowing the factors that affect the quitting decision of IT professionals is important for companies to decrease the turnover ra...

Over the past few years, firms have given more importance to the purchase-related decisions to gain competitive edge. Although great emphasis is given to the selection process of suppliers, commercial partnership may be terminated at a future date. This study, based on data from 66 automotive firms, examines factors affecting buyers' decision on th...

Users tend to use functional and usable products more frequently. It is also possible that a functional software is not usable or vice versa. Only functionality-focused designs fail to meet usability needs. Therefore, both usability and functionality, which in software design are interrelated, should be taken into account in the design processes. I...

Using electronic-reverse auction (e-reverse auction) offers many advantages to companies such as price reduction, decrease in cycle time, standardization, and transparency in purchasing process. Despite its great advantages, some users do not want to use e-reverse auction technology for the procurement of products or services. This study aims to un...

Purpose – The purpose of this paper is to examine various factors affecting users' behavioral intention to use (BIU) enterprise resource planning (ERP) systems, based on data from 75 potential end-users of ERP systems. Design/methodology/approach – A survey methodology is used to gather data. The research model is constructed based on the findings...

Financial institutions offer new banking channels to their customers, as technology adds new dimensions to the classic banking systems. One of the most popular self-service banking technologies is Internet banking. This study examines how young consumers perceive Internet banking in relation to other six banking channels (brick and mortar, automate...

Firm performance increases as workers' job satisfaction increases. Therefore, firms have a great interest in identifying the determinants of job satisfaction. To this end, this study conducts a survey to investigate the impact of IT professionals' demographic characteristics, work characteristics and work stress on job satisfaction. Five components...

Over the past few years, firms around the world have implemented enterprise resource planning (ERP) systems to have a standardized information system in their organizations. While millions of dollars have been spent on implementing ERP systems, previous research indicates that potential users may still not use them. This study, based on data from 7...

Using data collected from a sample of 260 university students, this study attempts to examine the relationships between the frequency of e-shopping and university respondents' demographic characteristics, the reasons for e-shopping non-usage and usage. In addition, the product differences bought through the Internet is examined. The results suggest...

Using data collected from a sample of 76 project managers from 64 firms, we explore the relative impact of project characteristics, frequency of problems encountered on the projects, perceived impact of these problems on the budget performance, project managers’ personal characteristics, and project managers’ conflict management styles on budget ov...

In recent years, shared costs and benefits among projects have started to be taken into consideration by IS managers so that more projects with the same amount of recourses can be developed. IS projects require large investments of recourses. Thus, Information system (IS) project selection plays an important role in sustaining the effectiveness of...

This pioneering study of industrial engineering internships reports the results from a survey of 70 companies that hired interns during the summer of 2003. The study reveals that companies' responses to the internship issues seem to be influenced by their plans for hiring interns in the future, whether they had an orientation program, and whether t...

In recent years, with the increasing competition and customer demand qualifications, companies search new ways to supply customer demands in a growing competition environment. Manufacturing systems as well as assembly lines are also being modified to achieve high productivity, low costs and higher flexibility. Mixed model assembly line balancing is...

Over the past few years, firms around the world have made large investments in information technology (IT) projects as the use of IT based systems is now considered a major determinant of competitive advantage. Many of these projects, however, have been afflicted by time slippages. In this study, using data collected from a sample of 97 project man...