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Analytic Hierarchy Process in Determining Aircraft Basic Maintenance Training Durations
(Emerald Group Publishing Ltd, 2026) Acikel, Gurkan; Temel, Mine Alemdaroglu
Purpose - Currently, in aircraft basic maintenance training, it is determined that various aircraft basic maintenance training organizations around the world apply different basic maintenance durations for the same modules of the same licence categories. Aircraft basic maintenance training organizations are lacking a common curriculum with standard durations for the basic maintenance training modules. To remedy the problems associated with this issue, the purpose of this study is to develop and demonstrate a quantifiable reference (i.e. theoretical training and evaluation content intensity) based scientific theoretical method to determine the durations of the basic theoretical maintenance trainings held for B1.1 and B2 licence categories in aircraft basic maintenance training organizations. Design/methodology/approach - The total basic maintenance training duration was first allocated to basic, theoretical and practical maintenance trainings. The obtained basic theoretical maintenance training duration was then allocated to related modules and submodules by using weighted theoretical training content intensity and weighted theoretical evaluation content intensity, which were obtained by applying a multi-criteria decision-making approach using the analytic hierarchy process (AHP). Findings - In this study, it was found that there is no standardization upon aircraft basic maintenance training organizations for the allocation of the basic maintenance training durations to modules. To remedy this problem, a scientific method, which relies on quantifiable reference bases rather than subjective reasoning, is needed. The reference bases of the proposed theoretical method (i.e. theoretical training and evaluation content intensity) can be tuned with the inclusion of the effect of basic knowledge requirements through multi-criteria decision-making (AHP). The theoretical method proposed in this work is robust in terms of resulting in close proximity values of the basic theoretical maintenance training durations for the common modules of B1.1 and B2 licence categories. The theoretical method is proven to yield greater basic theoretical maintenance training durations for modules having greater theoretical training and evaluation content intensity and lower basic theoretical maintenance training durations for modules having less theoretical training and evaluation content intensity. A distinct similarity in terms of basic theoretical maintenance training durations and the ranking of the modules (in terms of durations) is not present when the average of the training organizations is compared to the results of the theoretical method. A quantifiable reference (i.e. theoretical training and evaluation content intensity) based scientific theoretical method to determine basic theoretical maintenance training durations was developed and demonstrated. Practical implications - Results of this study would especially be useful in an international effort to standardize the different basic theoretical maintenance training durations applied in various aircraft basic maintenance training organizations. Originality/value - To the best of the authors' knowledge, this study is the first in providing and demonstrating a scientific theoretical method based on a systematic, multi-criteria decision-making approach to determine the durations of the basic theoretical maintenance trainings.
Regenerating Shopping Mall Interiors through Stakeholder Engagement and Participatory Design
(Emerald Group Publishing Ltd, 2026) Kocaili, Ergin Kemal; Ergun Kocaili, Buket
PurposeThis paper explores how participatory design approaches contribute to the regeneration of shopping mall interiors, with a specific focus on the design and spatial configuration of public restroom areas - critical, yet often overlooked, components of user experience in commercial environments.Design/methodology/approachAdopting a case study methodology, the research combines user surveys, stakeholder interviews and spatial analysis to investigate the participatory redesign process of restroom facilities in Kentpark Shopping Mall, Ankara. The study uses both qualitative and quantitative tools to evaluate user needs and the resulting spatial changes.FindingsThe findings demonstrate that engaging multiple stakeholders - including users, maintenance staff and management - through participatory methods leads to more inclusive, functional and context-sensitive interior solutions. In particular, data gathered through participatory processes directly informed the redesign of the public restrooms, resulting in significant improvements in layout, accessibility and spatial efficiency.Practical implicationsThe study offers a replicable model for incorporating participatory design into the regeneration of commercial interior spaces. It shows how empirical data collection and stakeholder input can be translated into the actual design of wet spaces, such as public restrooms, enhancing both usability and facility performance in aging shopping malls.Originality/valueThis research contributes to the limited body of literature on participatory design in commercial interiors by foregrounding restrooms as a meaningful site of spatial regeneration. It bridges the fields of interior architecture, spatial design research and facility management.
Citation - WoS: 7
Citation - Scopus: 8
Solar Energy for the Airport Ground Support Equipment - a Quantitative Study
(Emerald Group Publishing Ltd, 2023) Yildiz, Melih; Mutlu, Savas; Nagy, Andras; Kale, Utku
PurposeThis paper aims to evaluate the hypothetical situation in a resembling airport to Esenboga Airport and analyzes the condition of all ground support equipment (GSE) equipment to be supplied by electricity produced by solar panels mounted on the rooftop of the terminal building. The case is discussed using environmental emissions and economic feasibility. The results of the resembling case can be generalized to all airports for the reduction of emissions caused by ground operations of aviation. Design/methodology/approachGSE fleet data which has been prepared by TGS operated in the Esenboga Airport have been used to calculate emissions, and equivalent electricity consumption. A hypothetical solar panel construction on the rooftop of the terminal building and also the electricity production case was analyzed. Based on the calculations, both fuel and electricity use cases are compared by means of emissions and production costs using real data. FindingsThe electricity production and transmission pose a high value of emissions. Thus, electrification of GSE in the airport need a new approach such as producing the electric energy in the site. This research analyzes the case that the electricity is produced on the rooftop of terminal building and consumed by the GSE fleet. The authors discussed that it is both feasible and possible to electrify all the GSE except a shortage of two cold months with high fuel demand by using electric storage options. Practical implicationsGround handling is performed by using GSE which is historically powered by diesel and such internal combustion engines which are well known for their high emission rates. As most of the airports reside in populated areas, GSE emissions need to be evaluated for reduction. However the electric energy could be an alternative for GSE emissions reduction Originality/valueAviation is a system of many subsystems in which the performance of each unit plays a crucial role in the final success of the system. Concerns on environmental protection make the aviation industry focus on reducing emissions produced during operations. Although aircraft emissions are widely discussed in the literature, ground handling systems which are an integral part of the whole aviation system, also need to be studied regarding the environmental issues. Besides, the European Union has set out targets of reducing emissions at the airports during ground operations to zero. This paper discusses the possibility of the target by comparing various scenarios
Citation - WoS: 6
Citation - Scopus: 6
Effects of Window Proximity on Perceptions of Employees in the Call Center Offices
(Emerald Group Publishing Ltd, 2020) Yildirim, Kemal; Ozkan, Aysen; Gunes, Elif; Mestan, Ahmet
Purpose The purpose of this study is to determine the effects of window proximity on perceptions of employees in the call center offices. Design/methodology/approach A semantic differential scale composed of nine bipolar adjectives, four of which dealt with "planning," three of "privacy," while the rest measured "lighting" was applied for evaluation. In total, 92 employees at the TEPE Call Center in the Bilkent District, Ankara, Turkey participated in the research. Findings The results showed that window proximity directly affected the call center employees' perceptions. In addition, a positive approach was even less affected when the location of the workstation was more at the inner part of the workspace. On the contrary, workstations in front of the window were evaluated more positively, presumably because the employees were happy at feeling roomy and by giving them a higher level of privacy, while also minimizing distractions and interruptions. It was also found that call center employees with secondary education responded more positively than higher educated employees. Originality/value This study presents suggestions that would be useful for increasing the working and solution-focused perceptual performance values in call center environments from the new generation of work areas. They should be appropriate for the psychological and physical needs of employees in twenty-first-century communication environments, especially in spatial environments and for the suitability of the technological equipment used.
Citation - WoS: 4
Citation - Scopus: 6
Kiyaslio: a Gamified Mobile Crowdsourcing Application for Tracking Price Dispersion in the Grocery Retail Market
(Emerald Group Publishing Ltd, 2022) Macakoglu, Sevval Seray; Cinar, Burcu Alakus; Peker, Serhat
Purpose In the recent years, the rapid growth of the grocery retailing industry has created a great heterogeneity in prices across sellers in the market. Online price comparison agents which are key mechanisms to solve this problem by providing prices from different sellers. However, there are many sellers in the grocery industry do not offer online service, and so it is impossible to automatically retrieve price information from such grocery stores. In this manner, crowdsourcing can become an essential source of information by collecting current price data from shoppers. Therefore, this paper aims to propose Kiyaslio, a gamified mobile crowdsourcing application that provides price information of products from different grocery markets. Design/methodology/approach Kiyaslio has been developed through leveraging the power of crowdsourcing technology. Game elements have also been used to increase the willingness of users to contribute on price data entries. The proposed application is implemented using design science methodology, and it has been evaluated through usability testing by two well-known techniques which are the system usability scale and the net promoter score. Findings The results of the usability tests indicate that participants find Kiyaslio as functional, useful and easy to use. These findings prove its applicability and user acceptability. Practical implications The proposed platform supports crowd sourced data collection and could be effectively used as a tool to support shoppers to easily access current market product prices. Originality/value This paper presents a mobile application platform for tracking current prices in the grocery retail market whose strength is based on the crowdsourcing concept and incorporation of game elements.
Citation - WoS: 3
Citation - Scopus: 3
Kavaklidere-Ankara: the Formation of a Residential District During the 1950s
(Emerald Group Publishing Ltd, 2015) Resuloglu, Cilga; Ergut, Elvan Altan; Interior Architecture and Environmental Design
This paper aims to examine the formation of Kayak Were as a 'modern' residential district during the 1950s. Contemporary urbanization brought about changes in various regions of Ankara, among which Kavaklidere emerged as an important location with features that defined a new stage in the development of the identity of the capital city. The construction of houses in this district from the early 1950s onwards was in accordance with new functional requirements resulting from the needs of the contemporary socio-economic context, and exemplified the relationship between architectural approaches and social developments. In line with the rapid urbanization of Ankara throughout the 1950s, daily life in Kavaklidere was transformed, as experienced in the apartment blocks that were the newly constructed sites of modernization. The contemporary transformation of Kavaklidere was apparently formal and spatial, with the modernist architectural approach of the period, i.e. the so-called International Style, beginning to dominate in the shaping of its changing character. Nonetheless, the transformation was not only architectural but also social: the characteristics of this part of the city were then defined by structures like these apartment blocks, which brought modernist design features, together with modern ways of living, into wider public use and appreciation. The paper discusses how the identity of Kavaklidere as a residential district was formed in the context of the mid-twentieth century, when these new residences emerged as pioneering modernist architectural housing, the product of social change, which housed and hence facilitated the 'modern' lifestyle of that time.
Citation - WoS: 2
Citation - Scopus: 2
Spatial Design in Recent Housing Developments in Copenhagen: a Perspective of Social Mix and Mixing
(Emerald Group Publishing Ltd, 2023) Bican, Nezih Burak
PurposeThis study attempts to reveal the contemporary tools of spatial design - policy, planning, urban design and architecture - for social mix (SMX) and social mixing (SMXG) by focusing on the recent undertakings in Denmark, the case in point being Copenhagen.Design/methodology/approachThe study applies a combined research methodology consisting of qualitative strategies. By making use of regulatory document reviews and interviews with key respondents, the study puts together the tools for SMX which are, otherwise, disorganised. Dwelling on reviews of municipal local plans, site visits and semi-structured interviews with municipal agents in charge, it provides a comparative urban morphology analysis of three recently developed neighbourhoods on the basis of SMX and SMXG.FindingsThis study presents the untitled "toolbox" of Danish authorities to regulate the SMX policies and spatial efforts within a variety of planning/design scales to facilitate SMXG among the inhabitants of the neighbourhoods. The examination of successive cases manifests that SMX strategies have been integrated with those of SMXG, with a gradual upwards inclination, since mixing different tenures, types, sizes and prices have not been successful in guaranteeing social interaction. In doing so, the "in-between" zones have become the primary realm of control with an observable differentiation in the studied cases.Originality/valueStudies are scant concerning the spatial design efforts regarding social mix and mixing. The present work contributes to filling this gap by examining a cutting-edge practice in a mature milieu and describing it in a thorough and comparative manner.
Citation - WoS: 12
Citation - Scopus: 15
Alternative Numerical Modeling of a Superconducting Charge Qubit as an Eigenvalue Problem
(Emerald Group Publishing Ltd, 2011) Canturk, Mehmet; Kurt, Erol; Askerzade, Iman N.
Purpose - The purpose of this paper is to employ an alternative numerical approach to analyze the characteristics of superconducting charge qubit based on a single Cooper pair box (SCB), also to study the influence of the bias current. Design/methodology/approach - The paper starts with the circuit model of a charge qubit system based on Josephson junction using Hamiltonian formalism. Corresponding Schrodinger eigenvalue problem with periodic boundary condition is converted to the Mathieu type eigenvalue problem. By applying finite difference technique, energy spectrum of charge qubit is obtained and the solutions in the lowest band are obtained in the form of Bloch waves whose superposition provides a wave packet to investigate the effect of bias current to the Coulomb blockade. Findings - The paper identifies a periodic tridiagonal Hermitian matrix form of the eigenvalue problem that is believed to be a special eigenvalue problem. The paper emphasizes that Schrodinger formalism is very, useful to model superconducting qubits systems. The investigations indicate that the bias current strongly influences the Coulomb blockade and expectation value of supercurrent (as well as number of Cooper pairs) are affected by gate voltage and energy scale. Research limitations/implications - In the present study, Schrodinger eigenvalue problem is time independent, therefore, current-voltage characteristics of the charge qubit system could not be considered. The solution technique applied here can also be used to apply other type of Josephson junction based qubits and circuits. Practical implications - The paper includes theoretical findings for the development of superconducting qubit that can be valuable for experimentalist. The result obtained in this study is useful for the comparison of experimental study with the expectation value of number of Cooper pairs as function of gate voltage. Working parameters of a SCB can be determined from the findings. Originality/value This paper fulfils the contribution of the numerical study of Schrodinger equation for the investigation of superconducting qubits under the influence of bias current.

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