Ali Türkyılmaz and Coşkun Özkan
The purpose of this study is to develop and test a new customer satisfaction index model for Turkish mobile phone sector (TMPS).
Abstract
Purpose
The purpose of this study is to develop and test a new customer satisfaction index model for Turkish mobile phone sector (TMPS).
Design/methodology/approach
Based on relevant literature and theoretical considerations on customer satisfaction, a new measurement model was developed. A survey based on the proposed model was conducted to 700 mobile phone users in Istanbul. Partial least squares method was employed to estimate the proposed structural equation model (SEM).
Findings
The general applicability of a SEM depends on the reliability and validity of the modeling results. The proposed satisfaction model exhibits strong explanatory power with its satisfactory reliability and validity results.
Research limitations/implications
The proposed model was tested for the TMPS. It should ideally be tested periodically for different sectors with more data, and the index results should be compared.
Practical implications
The results of this study provide very important information for the managers in formulating competitive marketing strategies. The results show the critical points where the limited resources of the firms should be allocated to improve satisfaction and loyalty. Independent and uniform measurement characteristics of the studied model provide a useful tool for tracking performance and systematic benchmarking over time. It also provides information about the weaknesses and strengths of the company from the eyes of its customers.
Originality/value
This study is an attempt to develop and implement a satisfaction model for the TMPS. The proposed model consists of well‐established theories and approaches in customer behavior.
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Alper Kara, Aydin Ozkan and Yener Altunbas
Bank securitisation is deemed to have been a major contributing factor to the 2007/2008 financial crises via fuelling credit growth accompanied by lower banks’ credit standards…
Abstract
Purpose
Bank securitisation is deemed to have been a major contributing factor to the 2007/2008 financial crises via fuelling credit growth accompanied by lower banks’ credit standards. Yet, prior to the crisis a common view was that securitisation activity makes the financial system more stable as risk was more easily diversified, managed and allocated economy-wide. The purpose of this paper is to review the extant literature to explore the so far generated knowledge on the impact of securitisation on banking risks. In particular, the authors examine the theoretical arguments and empirical studies on securitisation and banking risks before and after the global financial crisis of 2007/2008.
Design/methodology/approach
Review and discussion of the literature.
Findings
Theoretical literature univocally accentuate the undesirable consequences of securitisation, which may promote retention of riskier loans, undermine banks’ screening and monitoring incentives and enhance banks’ risk appetite. However, empirical evidence does not uniformly support the theoretical conclusions. If banks are securitisation active they lend more to risky borrowers, have less diversified portfolios and hold less capital, retain riskier loans and are aggressive in loan pricing. Others argue that securitisation reduces banks insolvency risk, increases profitability, provides liquidity and leads to greater supply of loans. Mortgage securitisation is an area where there is consistent evidence of bank risk taking via securitisation.
Originality/value
The paper identifies open issues for future research.
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Aydin Ozkan and Agnieszka Trzeciakiewicz
The purpose of this paper is to investigate the impact of insider trading on subsequent stock returns in the UK, with a specific focus on the impact of the global financial crisis…
Abstract
Purpose
The purpose of this paper is to investigate the impact of insider trading on subsequent stock returns in the UK, with a specific focus on the impact of the global financial crisis of 2007-2008 on the relation between CEO and CFO stock purchases and returns.
Design/methodology/approach
The empirical analysis uses 10,230 purchases executed in 679 UK firms by 1,477 directors during the period from 2000 to 2010. Subsequent market-adjusted stock returns are regressed on a set of firm-specific accounting, market and corporate governance variables as well as the characteristics of CEOs and CFOs. Additionally, the analysis distinguishes between the opportunistic and routine trades.
Findings
The findings reveal that the position of the trading director and the nature of their trades are important in determining the impact on returns of insider trades. In particular, CEO purchases are on the whole more informative than CFO purchases and opportunistic purchases. The trades in the post-crisis period have a greater impact on subsequent stock returns.
Research limitations/implications
The empirical analysis is limited to the trades made by two executives. Future research should consider inside trades by all directors and distinguish between executive and non-executive directors. Also, a behavioral measure should be developed to test if the financial crisis affected the trading behavior of directors and whether directors use insider trading strategically to signal information to the market.
Practical implications
The impact of directors’ dealings on stock returns is not homogeneous. Financial analysts and investors should pay more attention to different types of trades and the identity of trading director.
Originality/value
This paper, to the authors’ knowledge, provides the first attempt that combines in the same framework the identity and personal attributes of trading executive directors, firm-level corporate governance features, the nature of purchase transactions and the trading period characteristics. Furthermore the empirical analysis is carried out during a period that also covers the recent global financial crisis period and its immediate aftermath.
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Ali Turkyilmaz, Asil Oztekin, Selim Zaim and Omer Fahrettin Demirel
Previous researches have proven that customer satisfaction and loyalty are affected by complicated relationships and are challenging to European customer satisfaction index (ECSI…
Abstract
Purpose
Previous researches have proven that customer satisfaction and loyalty are affected by complicated relationships and are challenging to European customer satisfaction index (ECSI) model. Existing approaches mostly limit their hypotheses to linear relationships, which hinder much information that would lead to better modeling and understanding the relationship between customer satisfaction and loyalty. The purpose of this paper is to reveal potential nonlinear and interaction effects that might be embedded in antecedents of ECSI by exemplifying it in Turkish telecommunications sector.
Design/methodology/approach
This papar has justified the validity and reliability of the ECSI model implementation in Turk Telekom Company. The path models are tested via conventional structural equation modeling (SEM) and using a novel method, i.e. universal structure modeling with Bayesian neural networks.
Findings
The findings of this study reveal that quality has the most important impact on customer satisfaction. The next important construct was found to be the company image. The relationship between customer expectation and customer satisfaction was revealed to be insignificant. This study reveals the fact that while using the ECSI model more attention must be paid to the consideration of potential nonlinear relationships that might be available among model constructs.
Originality/value
This research presents uniqueness in that it reveals significant nonlinear relationships between the model constructs of the ECSI model. Previous studies have identified purely linear relationships, which may not hold true in reality. However, in this study it is revealed that improving one determinant of customer satisfaction may not be as worthy as it is assumed to be in theory, which refers to a nonlinear relationship.
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Fouad Al Bayaty, Mazen M. Jamil Al-Obaidi, Anissa Lokman, Suhaila Yazid and Omar Emad Ibrahim
This study examines the osteoconductive and healing capabilities of locally implanted synthetic hydroxyapatite (sHAp) derived from eggshells in the central incisor sockets of rats.
Abstract
Purpose
This study examines the osteoconductive and healing capabilities of locally implanted synthetic hydroxyapatite (sHAp) derived from eggshells in the central incisor sockets of rats.
Design/methodology/approach
Toxicity experiments were conducted in vitro and in vivo, to testify the safety dosage of sHAp. Around 24 mature male Sprague–Dawley (SD) rats had their upper central incisors extracted. The rats were placed into three groups of eight rats each: Group 1: the sockets of extracted central incisors were left unfilled (control), Group 2: filled up with commercially available hydroxyapatite (HAp) and Group 3: implanted with sHAp locally retrieved from eggshells. After extraction, four rats from each group were sacrificed at 2nd and 4th weeks. Maxillary tissue sections were obtained and stained with hematoxylin and eosin (H&E) and Masson’s trichome (MT) staining. Anti-osteocalcin (OCN) and proliferating cell nuclear antigen (PCNA) were used primary antibodies for immunohistochemistry (IHC) special labeling.
Findings
The results showed that the locally implanted sHAp was non-toxic and safe in cell lines (human osteoblast and fibroblast) and animals. Histological analysis of H&E, MT and IHC showed that the sockets treated with locally implanted sHAp from eggshells were filled with new bone tissue of comparable thickness to other groups.
Originality/value
This unique technique uses locally implanted eggshell-derived sHAp with osteoconductive characteristics. In an in vivo model, sHAps increased OCN and PCNA expression to improve bone repair.
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Ela Ozkan-Canbolat, Gulberk Ozkan and Aydin Beraha
This paper aims to show that evolutionary game theory not only provides a general and unified theory of political philosophy and strategic management theories but also a positive…
Abstract
Purpose
This paper aims to show that evolutionary game theory not only provides a general and unified theory of political philosophy and strategic management theories but also a positive theory of interactive behavior.
Design/methodology/approach
This study suggests a way of the evolutionary game-theoretical model.
Findings
The model presented in this paper demonstrates coopetition is derived from balance points in multi-actor games. As the political–philosophical address of those strategic games will of all becomes convention in this balance point at which common knowledge occurs global optimum.
Research limitations/implications
This study explores the connections between several streams in philosophy and strategic management. What does a particular philosophy contribute to strategic management with respect to game theory? When addressing this question in historical or exploratory terms, or in a combination of both, the end result is similar: particular philosophical issues, properly explained, are discussed in relation to important questions in strategic management.
Practical implications
What are the psychological and behavioral underpinnings of strategic decisions of this kind? What type of cognitive frames and managerial mental models, such as the game-theoretical model, might enable or hinder the integration of real-world problems in strategic decision-making?
Social implications
What explains the evolution of such mental models, as well as the development of philosophical ideas, in informing the origins? How does the evolution of social and political contexts influence change in the cognitive and behavioral underpinnings of strategic decision-making?
Originality/value
This study highlights the overt power of strategic management ideas – competition, cooperation and coopetition – which have historically been built on the foundations of organizational theory, while also underlying the potential of philosophies, collective wisdom and Condorcet’s jury theorem and Rousseau’s (1998) correctness theory in games of evaluation. This study investigates whether the many produce better decisions than the wise few.
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Kathirvel Selvaraju and Punniyamoorthy Murugesan
The purpose of this article is to develop a cost-effective model for Multi-Criteria ABC Inventory Classification and to measure its performance in comparison to the other existing…
Abstract
Purpose
The purpose of this article is to develop a cost-effective model for Multi-Criteria ABC Inventory Classification and to measure its performance in comparison to the other existing models.
Design/methodology/approach
Particle Swarm Optimization (PSO) algorithm is exclusively designed for Multi-Criteria ABC Inventory Classification wherein the inventory is classified based on the objective of cost minimization, which is achieved through the inventory performance index – total relevant cost. Effectiveness of classification of the proposed model and the other classification models toward two inventory performance measures, that is, cost and inventory turnover has been computed, and the results of all models are relatively compared by arriving at the cumulative performance score of each model.
Findings
This study reveals that the ABC Inventory classification based on the proposed PSO approach is more effective toward cost and inventory turnover ratio in comparison to the twenty existing models.
Practical implications
The proposed model can be easily adapted to the industrial requirement of inventory classification by cost as objective as well as other inventory management performance measures.
Originality/value
The conceptual model is more versatile which can be adapted for various objectives and the effectiveness of classification in comparison to the other models can be measured toward each objective as well as combining all the objectives.
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Aydin Beraha, Dursun Bingol, Ela Ozkan-Canbolat and Nina Szczygiel
The purpose of this paper is to determine the contribution of company functional areas – production, marketing, and human resources – to strategic flexibility configurations. It…
Abstract
Purpose
The purpose of this paper is to determine the contribution of company functional areas – production, marketing, and human resources – to strategic flexibility configurations. It also seeks to explore the comparative contributions of functional areas to product innovation.
Design/methodology/approach
The study uses the fuzzy-set qualitative comparative analysis to develop a better understanding of departmental contributions to strategic flexibility configuration and the effect of strategic flexibility on product innovation by functional areas.
Findings
The findings of this study indicate that marketing flexibility has a key role in product innovation.
Research limitations/implications
A limited number of cases may be one of the possible reasons for no proven contribution of HR flexibility to product innovation, and may affect results due to poor representation.
Practical implications
The required flexibility level is at least the one maintaining the company’s status and certifying competitive advantage.
Social implications
A pressure for flexibility leads companies to modify their organizational structure, processes, and resources.
Originality/value
The environmental change and uncertainty provide dynamic challenges that increase the need of company flexible reactions
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Abdul Qayyum, Do Ba Khang and Donyaprueth Krairit
The purpose of this paper is to investigate how various antecedents influence customer loyalty in the mobile phone industry and how customer demographic variables moderate such…
Abstract
Purpose
The purpose of this paper is to investigate how various antecedents influence customer loyalty in the mobile phone industry and how customer demographic variables moderate such relationships. A comprehensive model is proposed and tested empirically that features six antecedents identified in recent industry literature – customer satisfaction, perceived service quality, value, switching costs, trust, and corporate image – and common demographic variables.
Design/methodology/approach
Data were collected using a field questionnaire survey of mobile phone users in Pakistan. Structural equation modeling (SEM) and multi-group SEM evaluate direct and moderating effects.
Findings
Findings suggest that of six antecedents, customer satisfaction, perceived switching costs, service quality, and perceived value have positive and significant relationships with customer loyalty. Among the demographic variables, only income and area of residence moderate the relationships between customer loyalty and the antecedents.
Research limitations/implications
The research was conducted in an Asian country where – due to recent liberalization – the telecommunications industry is emerging. The cultural and socio-economic diversity in Asia limits generalization of findings.
Practical implications
Resource allocation that promotes customer loyalty in the mobile phone industry and improves customer satisfaction, perceived service quality, value, and switching costs can be optimized by implementing different measures for demographic groups. Policies should require mobile phone operators to invest more in rural areas to enhance and expand services.
Originality/value
This study contributes to the literature by offering a comprehensive model that includes the most important antecedents of customer loyalty and customer demographics in the mobile phone industry. The model is validated empirically in the context of emerging Asian economies with new field data sourced from Pakistan.
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Mine Karatas-Ozkan, Renan Tunalioglu, Shahnaz Ibrahim, Emir Ozeren, Vadim Grinevich and Joseph Kimaro
Sustainability is viewed as an encompassing perspective, as endorsed by the international policy context, driven by the UN’s Sustainable Development Goals (SDGs). We aim to…
Abstract
Purpose
Sustainability is viewed as an encompassing perspective, as endorsed by the international policy context, driven by the UN’s Sustainable Development Goals (SDGs). We aim to examine how women entrepreneurs transform capitals to pursue sustainability, and to generate policy insights for sustainability actions through tourism entrepreneurship.
Design/methodology/approach
Applying qualitative approach, we have generated empirical evidence drawing on 37 qualitative interviews carried out in Turkey, whereby boundaries between traditional patriarchal forces and progressive movements in gender relations are blurred.
Findings
We have generated insights into how women entrepreneurs develop their sustainability practice by transforming their available economic, cultural, social and symbolic capitals in interpreting the macro-field and by developing navigation strategies to pursue sustainability. This transformative process demonstrates how gender roles were performed and negotiated in serving for sustainability pillars.
Research limitations/implications
In this paper, we demonstrate the nature and instrumentality of sustainable tourism entrepreneurship through a gender lens in addressing some of these SDG-driven challenges.
Originality/value
We advance the scholarly and policy debates by bringing gender issues to the forefront, discussing sustainable tourism initiatives from the viewpoint of entrepreneurs and various members of local community and stakeholder in a developing country context where women’s solidarity becomes crucial.