Narrow Results

In this paper, we introduce a SEIR-type COVID-19 model where the infected class is further divided into subclasses with individuals in intensive care (ICUs) and ventilation units. The model is calibrated with the symptomatic COVID-19 cases, deaths, and the number of patients in ICUs and ventilation units as reported by Republic of Turkey, Ministry of Health for the period 11 March 2020 through 30 May 2020 when the nationwide lockdown is in order. COVID-19 interventions in Turkey are incorporated into the model to detect the future trend of the outbreak accurately. We tested the effect of underreporting and we found that the peaks of the disease differ significantly depending on the rate of underreporting, however, the timing of the peaks remains constant. The lockdown is lifted on 1 June, and the model is modified to include a time-dependent transmission rate which is linked to the effective reproduction number ${{ℛ}}_t$ through basic reproduction number ${{ℛ}}_0$. The modified model captures the changing dynamics and peaks of the outbreak successfully. With the onset of vaccination on 13 January 2021, we augment the model with the vaccination class to investigate the impact of vaccination rate and efficacy. We observe that vaccination rate is a more critical parameter than the vaccine efficacy to eliminate the disease successfully.

Measuring markups in restaurant services is a difficult task. Although the sales price is observed, cost of the product served is unobserved. In this study, we employ an intuitive framework and focus specifically on markups on soft drinks. We analyze the determinants of markup on soft drinks in restaurants over 2006–2014. Results suggest that current demand conditions (net minimum wage, output gap), major cost items (food and energy prices, exchange rate) and economic uncertainty (exchange rate volatility) significantly affect markups. This strategy enables the detection of relevant factors which may not be possible to detect in other settings.

This study proposes a three-stage holistic methodology combining an interval type-2 fuzzy analytical hierarchy process (IT2F-AHP) and data envelopment analysis (DEA) to deal with the performance evaluation problems encountered in fuzzy decision environments. In the first stage, prospective inputs and outputs are determined by field studies. The second stage employs IT2F-AHP to identify the most appropriate performance indicators based on vague expert judgements. Finally, DEA is applied to the decision-making units (DMUs) based on the selected set of input and output measures. The proposed methodology proves its merit on a case study addressing the performance of real estate investment trusts (REITs) in Turkey during their 10-year journey of trading on Borsa Istanbul (BIST). The results demonstrate that the average scores for technical, pure technical and scale efficiencies are 66%, 80% and 80%, respectively. Considering the technical efficiency scores, Turkish REITs could have reduced their input factors by an average of 34%. The findings also reveal that the majority of Turkish REITs suffer from economies of scale and could have improved their performance by expansion.

This study investigates which technology management (TM) tools are used in practice, what determines their usage, and whether they affect the user firms' performance. Based on a survey of 52 electronics and machinery firms in Turkey, the study shows there are significant relationships between the number of TM tools and techniques that a firm uses and (i) the hierarchical level of the chief technology officer (CTO) or most senior manager responsible for technology, (ii) his/her field of education, and (iii) the size of the firm. The findings indicate a significant and linear relationship between the extent to which the firms have reached their growth targets and the number of TM tools and techniques used. This relationship is, however, not observed between firm profitability and the number of TM tools and techniques. The findings have important implications for the practice of TM.

The aim of this paper is to replicate the study of Siegrist et al. [2007] and to present a comparison of nanotechnology acceptance in Turkey and Switzerland. The participants in our survey acknowledge the benefits of nanotechnology in achieving a preferred future (significance on the country's economy and on wealth creation, as well as quality of life) while reserving some sceptism on the institutions' responsibility in utilizing nanotechnology in the food domain.

The most beneficial application in our study is viewed as nanotechnology-used bread compared to food packaging of Swiss study. The most risky application is seen as the application for tomatoes, the most affect is observed again for the tomatoes and willingness to buy(WTB) choice is more for juice application than any other applications analyzed in this study. Perceived benefits and perceived risks are found to have influence on the WTB nanotechnology applications in the food domain. Results did not support any evidence suggesting that the nanoinside applications are perceived as less acceptable than nanooutside application as stated in the Swiss study. Affect evoked by the information existing in environment about the nanotechnology products have significant relation with benefits and risks of this emerging technology. The relation between affect and risk in our model is positive whereas it is negative in Siegrist et al. [2007]. The effect of social trust on affect is found to be insignificant in our study which was an assumption of Siegrist et al. [2007] and found to be significant in their research.

This paper attempts to help the managers to understand the youth and young adults' perception of nanotechnology in Turkey and to consider the importance of those perceptions for the realization of technological advances in improving their products and developing new ones.

The purpose of this paper is to analyze the effects of organizational formalization on the behavioral, market, product, and process types of firm innovativeness as well as the interplay between these different innovativeness types. Based on data collected through a survey of the financial services industry in Turkey, the analyses show that formalization directly hinders both behavioral and market innovativeness. Moreover, as behavioral innovativeness influences product and process innovativeness, formalization's effect on these types of innovativeness are indirect. As expected, the study also finds that process innovativeness facilitates both product and market innovativeness and that product innovativeness foster market innovativeness. This study makes a contribution to the literature by examining the linkages between formalization in firms and the various firm innovativeness types, which have previously been studied only separately. The study thus provides a richer understanding of the relationship between formalization and firm innovativeness types.

Make-or-buy decision is an important factor affecting the profitability of the firms in all sectors. The goal of this study is to propose a model for firms in engineering design services sector for make-or-buy decisions. A survey was conducted to determine the importance percentages given in an engineering company in make-or-buy decisions and a model was developed. The results of the case study show intriguing clusters of company personnel.

As the lack of consensus among company managers and personnel may inhibit the successful implementation of the developed strategy, we use K-Means Clustering to determine the different perspectives of different groups of employees (managers, senior engineers, junior engineers, technical and administrative support personnel) which may contribute to the understanding of social dynamics of decision making within the company. 4-cluster and 5-cluster analysis results indicate the need for further study on the dynamics of cluster membership.

The objective of this paper is to explore through in-depth interviews the reasons why diversity management initiatives targeting women is an important strategic management issue for companies. Interviewed are the human resource managers of two of Turkey’s leading business groups: a manager from the HR department of one of Turkey’s largest banks and the deputy general manager of a non-governmental organization. The evidence suggests that these firms exercise carefully honed policies aimed at fostering gender equality and to that end engage in a variety of activities targeting various human resource functions. Their motives appear to be to reinforce their corporate image, enhance employee satisfaction, and reap such anticipated rewards as greater productivity and increased innovation capability. The importance of company leadership is underlined as an antecedent to the adoption of gender-equality focussed diversity management. The study may have important implications for building sustainable corporate brands, especially in the emerging-market context.

Information and communication technologies (ICTs) has become a tool which cannot be ignored in terms of public administrations, which provides advantage to the administrations as far as they can be adapted. The use of ICTs become widespread in the health sector as it is in all other sectors. In hospitals, hospital information systems (HIS) are used to keep records of patients and hospitals securely, to improve appointment, in-hospital management, decision support and workflow processes. Therefore, HISs are also used to increase efficiency and productivity, to reduce error rates, to increase service quality, to reduce service costs and to realize the specific purposes such as ensuring patient satisfaction. It is necessary that the end users should adopt HISs to obtain the expected benefits and to implement HIS successfully in public hospitals. The adoption of a technology product is also a sociological phenomenon at the same time. In this regard, the issue of adoption in the relevant literature is addressed in the context of a wide variety of models and many variables. This study is also a study of technology adoption. The subject of the study is the adoption of HISs in public hospitals in Turkey. In this context. The study aimed to determine the factors affecting the adoption of HISs by the personnel working in public hospitals in Turkey, in accordance with the Unified Theory of Acceptance and Use of Technology (UTAUT) model in the literature on technology adoption. In the study, the universe of the study consisted of the personnels (physicians, nurses, health officers, medical secretaries] which were working in public hospitals in the Bursa and Balıkesir Metropolitan Municipalities at the time of the study. According to the results of the study, performance expectancy, effort expectancy and social influence variables have positive and significant effects on the behavioral intention of hospital staff for using of HISs. In addition, facilitating conditions and behavioral intention variables have a positive and significant effect on usage behavior. On the other hand, it was found that gender has a moderator effect on the relationship between performance expectancy, effort expectancy and behavioral intention. Experience has a moderator effect on the relationship between the social influence and the behavioral intention while age has a moderator effect on the relationship between facilitating conditions and use behavior.

The author got a chance to visit Turkey for investigating the damage of industrial facilities in the 1999 Kocaeli Earthquake which occurred on 17 August 1999 in the Kocaeli province of Turkey.

This report provides a brief investigation obtained through the seismic damage survey, particularly, focused on the damages to industrial facilities. The epicentral area in the Kocaeli province is the most industrial region of Turkey. Severe excitation attacked this region and industrial plants and structures were more or less damaged. Since the author could only visit a few sites, the report mainly describes the damages of two plants; TÜPRAŞ oil refinery where big fire occurred and TOYOTA–SA car manufacturing factory where no significant damage appeared.

The purpose of this study is to examine the effects of factors of environmental uncertainty on the innovativeness of small and medium enterprises (SMEs). Innovativeness is widely accepted as an important characteristic for firm competitiveness and it has been studied by both researchers as well as business managers. Environmental uncertainty is a measure of the complexity of changing external forces faced by an organisation and it crucially impacts the responses of organisations in order to stay competitive. Based on approaches in existing literature, this study conceptualises environmental uncertainty comprised three separate dimensions — competitive intensity, market/demand turbulence, technological turbulence. Data for the study were collected from 156 SMEs in Turkey. SMEs are regarded as an important ingredient in the economic growth of nations and especially so in developing nations such as Turkey. The findings of the study reveal that market/demand turbulence and technological turbulence have a positive effect on the innovativeness of SMEs. Interestingly and contrary to popular belief, competitive intensity was not found to have significant effect on an SME's innovativeness. The implication of the results from this research is that the degree of organisational innovativeness for SMEs tends to increase and therefore should be supported in environments with greater technological and market/demand turbulence. This research makes an important contribution to the developing body of innovation literature and provides directions for managers and researchers in influencing innovativeness of firms.

The study of modes of open innovation in smaller companies is still in the development phase. This study responds to this situation and, drawing upon a data set from 4,679 Turkish small and medium-sized enterprises (SMEs), explores the influence of inbound open innovation and coupled open innovation on marketing innovation as well as process and organisational innovation in SMEs. Results reveal major differences between small and medium-sized Turkish enterprises with regard to both marketing innovation as well as process and organisational innovation. While inbound open innovation positively influences both, marketing as well as process and organisational innovation, the effects for small-sized enterprises are even higher than for medium-sized ones. Coupled open innovation positively influences both innovation outcomes as well, although the effects for medium-sized enterprises are significantly higher than for smaller ones.

This paper presents a comparative study of private returns to schooling of urban men in Egypt, Iran, and Turkey using similar survey data and a uniform methodology. We employ three surveys for each country that span nearly two decades, from the 1980s to 2006, and, to increase the comparability of the estimates across surveys, we focus on urban men 20–54 years old and in full time wage and salary employment. Our aim is to learn how the monetary signals of rewards that guide individual decisions to invest in education are shaped by the institutions of education and labor markets in these countries. Our estimates generally support the stylized facts of the institutions of education and labor markets in Middle Eastern countries. Their labor markets have been described as dominated by the public sector and therefore relatively inflexible, and their education systems as more focused on secondary and tertiary degrees than teaching practical and productive skills. Returns in all countries are increasing in years of schooling, which is contrary to the Mincer assumption of linear returns but consistent with overemphasis on secondary and tertiary degrees. Low returns to vocational training relative to general upper secondary, which have been observed in many developing countries, are observed in Egypt and Iran, but not Turkey. This pattern of returns across countries seems to correspond to how students are selected into vocational and general upper secondary tracks, which is an important part of the education institutions of these countries, and the fact that Turkey's economy is more open than the other two. Greater competitiveness in all three countries over time seems to have increased returns to university education and in few cases to vocational education, but not to general high school.

Despite its recent growth performance, the Turkish economy has been experiencing current account imbalances, and has so far been able to continue these imbalances without jeopardizing economic growth. However, recent uncertainties in the world economy have urged policy makers to control these imbalances and to take actions accordingly in the short-run. The literature postulates that expenditure reduction and expenditure switching policies are two conventional measures to implement in an economy suffering from current account deficits. In this regard, the aim of the paper is to examine the role of expenditure components in import demand, which is among one of the most crucial elements of current account items. The empirical results indicate that demand for imports has a very sluggish adjustment process in response to any policy shocks, and consumption and export expenditure together with the relative prices are the important factors that seem to influence this adjustment process. The high dependence of domestic production on foreign intermediate goods and the reluctance of the Turkish entrepreneurs for import substitution (mainly due to an unfavorable business climate) could be regarded as the reason for this sluggish adjustment process of import demand. This research accordingly shows that these conventional measures (such as those that are included by expenditure reduction and expenditure switching policies) might be necessary but not sufficient, and it would require more structural and long-run policy actions to deal with recent current account difficulties in the Turkish case. The empirical findings also indicate that the import requirement of exports is very high. This, together with high import dependency of domestic production, calls for structural and long-run policy actions that would help to increase the value added to Turkish exports.

During the last two decades, Turkey implemented a number of structural adjustment programmes, and changed the economic structural priorities from agriculture to manufacturing sectors. However, agricultural sector has still remained as the most important sector in terms of employing almost 29.5% of total employment in the economy. Despite this situation share of agricultural production in total value added has drastically declined. This research aims to enlighten changing role of agricultural sector in Turkish economy. In doing so, we employ input–output model, in which sectoral inter-linkages can be defined. Our research uses input–output tables from 1968 to 2002 and analyzes the importance of agricultural sector basing upon the forward and backward linkages calculated under different hypothetical cases. Therefore, we can examine the changes in total production in the economy. Through such a sensitivity analyses, we are able to investigate the extent of which other sectors rely on the production of the agricultural sector.

In this paper, we analyze the job creation and destruction process, and the productivity dynamics in Turkish manufacturing by size, export status, import status and ownership by using a comprehensive firm-level dataset for the period of 2010–2015. Our focus is on the effect of turnover, which is due to the entry and exit of firms, on both job flows and industrial productivity growth. Our results show that while small firms contribute most to job creation, it is the large firms that contribute most to productivity growth. Regarding ownership, domestic private firms perform better than foreign firms in both job creation and productivity growth. With respect to export status, even though non-exporters outperform exporters in job creation, exporters dominate the productivity growth. As for import status, in job creation, like in the case of export status, non-importers do better but in productivity growth, unlike in the export status, no group of firms dominate, more specifically importers’ and non-importers’ contributions are close to each other. Another interesting finding is that, turnover effect on industry productivity is positive but very low. The role of incumbent firms in generating productivity growth is much higher than that of entering and exiting firms.

The primary objective of this study is to investigate the determinants of foreign direct investment, with a specific focus on per capita GDP (GDP), alongside various risk factors including economic risk (ER), financial risk (FR), political risk (PR), and geopolitical risk (GPR), in the context of Turkey. This investigation employs an innovative wavelet methodology to analyze the relationships among these variables. The empirical analysis entails the application of wavelet coherence, as well as multiple wavelet coherence (MWC) and partial wavelet coherence (PWC) techniques, to evaluate the strength and significance of relationships between different time series while considering the influence of other related time series. Utilizing quarterly data spanning from 1988Q1 to 2020Q4, this study seeks to fill a gap in the existing literature by examining the nexus between these factors in both time and frequency domains, a novel approach in this field. The findings from the wavelet coherence analysis reveal that GDP, PR, FR, and ER positively impact FDI inflows, whereas GPR exerts a negative influence across various time and frequency intervals. Moreover, the outcomes of MWC and PWC analyses underscore the significant effects of the control variables on the relationships under investigation. Based on these findings, the study puts forth noteworthy policy implications aimed at fostering a more conducive environment for FDI in Turkey.

This paper investigates the impact of the recent terrorist attacks on the Turkish banking sector. Specifically, an event study analysis is executed to estimate the abnormal returns of banks’ stocks in Turkey. According to the results, negative and significant abnormal returns were observed on the event dates of terrorist attacks, those of which especially occurred at international points and touristic places. The study continues with a regression analysis that looks into the cross-bank variation of abnormal returns by using important bank characteristics as predictors. The regression analysis exhibits that banks with higher leverage and larger size are prone to getting more negatively affected by the terrorist attack. On the other hand, banks with higher liquidity and higher income level are likely to have less negative abnormal returns.

The COVID-19 is a global disease that occurred at the end of 2019 and it has shown its effects all over the world in a very short time. World Health Organization has mobilized all the countries of the world to survive with minimal damage from this outbreak. The situation in some countries was under control as their health infrastructure is robust enough. On the other hand, many countries suffered significant damage from the outbreak. The countries that have already taken their precautions have suffered less, Turkey is one of the leading countries. Besides taking precautions in advance, countries are guiding each other throughout the outbreak. Therefore, the countries leading the fight against the outbreak should be analyzed and each country should update its precautions to fight the outbreak. In this study, COVID-19 deaths are taken into account and similar countries to Turkey are identified by K-means clustering. Later, by comparing the various characteristics of Turkey with these similar countries, Turkey’s status in fighting the outbreak is revealed. The precautions Turkey took before the outbreak showed that Turkey can fight the COVID-19 outbreak successfully.

Background: Un-knotted barbed suture constructs are postulated to decrease repair bulk and improve tension loading along the entire repair site resulting in beneficial biomechanical repair properties. Applying this repair technique to tendons has shown good results in ex-vivo experiments previously but thus far no in-vivo study could confirm these. Therefore, this current study was conducted to assess the value of un-knotted barbed suture repairs in the primary repair of flexor tendons in an in-vivo setting.

Methods: Two groups of 10 turkeys (Meleagris gallapovos) were used. All turkeys underwent surgical zone II flexor tendon laceration repairs. In group one, tendons were repaired using a traditional four-strand cross-locked cruciate (Adelaide) repair, while in group two, a four-strand knotless barbed suture 3D repair was used. Postoperatively repaired digits were casted in functional position, and animals were left free to mobilise and full weight bear, resembling a high-tension post-op rehabilitation protocol. Surgeries and rehabilitations went uneventful and no major complications were noted. The turkeys were monitored for 6 weeks before the repairs were re-examined and assessed against several outcomes, such as failure rate, repair bulk, range of motion, adhesion formation and biomechanical stability.

Results: In this high-tension in-vivo tendon repair experiment, traditionally repaired tendons performed significantly better when comparing absolute failure rates and repair stability after 6 weeks. Nevertheless, the knotless barbed suture repairs that remained intact demonstrated benefits in all other outcome measures, including repair bulk, range of motion, adhesion formation and operating time.

Conclusions: Previously demonstrated ex-vivo benefits of flexor tendon repairs with resorbable barbed sutures may not be applicable in an in-vivo setting due to significant difference in repair stability and failure rates.

Level of Evidence: Level IV (Therapeutic)