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Article Citation - WoS: 2Citation - Scopus: 2A Comparative Analysis of the Criteria for Choosing Sustainable Materials for Façades in Turkey and the European Union(Mdpi, 2024) Daskin, Haney Basak; Barbulescu, Alina; Muntean, Radu; Akcay, Emre CanerOne of the primary contributors to energy consumption is the construction industry. To address the urgent demand for eco-friendly approaches in this field, this study conducted an investigation on Scopus and Web of Science databases to identify the criteria for selecting sustainable materials for facades. Three groups of criteria were derived after a systematic review: Environmental, Social/economic and Technical. The main goal of the research was to answer the question of whether there are differences in these materials' selection between Turkey and European Union countries. After applying statistical tests, it was found that there are significant differences in selecting eco-friendly material only from the social/economic perspective. The most important sub-criterion is the economic cost. Comparisons with results from China and US confirm this finding.Article Citation - WoS: 4Citation - Scopus: 5Predicting Employer and Worker Responsibilities in Accidents That Involve Falls in Building Construction Sites(Mdpi, 2022) Akcay, Emre Caner; Arditi, DavidFall-related accidents have received more attention in building construction than in civil construction as fall-from-heights is more common in building construction. In addition to social costs, construction companies face a significant financial burden when fall-related accidents occur. The major portion of the direct cost of accidents that involve falls includes the compensation paid by the employer to the worker. The employer and the worker try to reach an agreement on the size of the compensation, however, most of the time the process is contentious. The objective of this study is to predict the parties' responsibilities for a fall-related accident by modeling the relationship between the employer and the worker using a multi-agent system. The research pursued a three-step method, including collection of data, development of a multi-agent model, and testing of the model. The model provides satisfactory results and can be used to quantify the employer's and the worker's responsibilities in construction fall accidents, hence avoiding any escalation to pursue arbitration or litigation.Article Citation - WoS: 16Citation - Scopus: 28Barriers To Undertaking Green Building Projects in Developing Countries: a Turkish Perspective(Mdpi, 2023) Akcay, Emre CanerGreen buildings (GBs) play an important role in achieving sustainable development goals. However, the implementation of green technologies in building projects has not reached the desired level in developing countries such as Turkey because of barriers stemming from country-related factors as well as factors related to design and construction. The objective of this study was to explore the barriers to undertaking GB projects in Turkey. A questionnaire survey was administered to 116 construction practitioners to analyze the criticality of barriers to GB design and construction in the Turkish construction industry. Both descriptive and inferential statistics were adopted to evaluate the data obtained from the questionnaire survey. The findings suggest that the major barriers that hinder the adoption of GBs in Turkey are higher construction cost, lack of knowledge about GBs, lack of an authorized GB rating system, unavailability of GB materials, and inadequate market demand, whereas longer design time is the least critical barrier. The results of factor analysis indicate that the barriers to undertaking GB projects can be grouped under five "factors", i.e., cost- and demand-related barriers, market-related barriers, people-related barriers, government-related barriers, and time-related barriers. In light of the results, policy makers and construction practitioners can devise strategies to promote GBs in Turkey, which can also be valid in other developing countries with similar socio-economic conditions.Article Citation - WoS: 5Citation - Scopus: 5Exploring the Critical Risk Factors of Public-Private Partnership City Hospital Projects in Turkey(Mdpi, 2024) Dogan Erdem, Tugba; Birgonul, Zeynep; Bilgin, Gozde; Akcay, Emre CanerGovernments face challenges in delivering essential public services due to their limited funds. This has led to an increasing reliance on the Public-Private Partnership (PPP) model, an alternative financing model involving a long-term collaboration between the private and public sectors to provide public services. Turkey, as a developing country facing financial limitations, has embraced the PPP model to address urgent public needs. Over the past decade, the Turkish Government has extensively utilized the PPP model, particularly in executing city hospital projects. However, investors have faced challenges in project execution due to various risk factors. Therefore, the main objective of this study is to explore the critical risk factors associated with PPP city hospital projects in Turkey. In this context, a comprehensive literature review was conducted to identify potential risks related to PPP city hospital projects. A questionnaire survey was implemented to assess the probability of occurrence and the severity of the impact of these risk factors. The collected data underwent analysis to determine the priority of these risk factors. The findings revealed that the top five most critical risk factors in PPP city hospital projects in Turkey are "foreign exchange rate fluctuations", "inflation rate volatility", "high finance costs", "fiscal issues", and "economic crises". Conversely, "unavailability of equipment" was identified as the least significant risk factor. The insights gained from this research can offer valuable guidance for prospective investors interested in participating in PPP city hospital projects in Turkey and other developing countries with similar conditions.
