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Article
Publication date: 20 November 2020

Hakan Saribas and İbrahim Güran Yumuşak

Macro models are being developed in Islamic economics literature. These models, in general, follow the program of Islamization of knowledge and combine the genuine…

Abstract

Purpose

Macro models are being developed in Islamic economics literature. These models, in general, follow the program of Islamization of knowledge and combine the genuine characteristics of Islamic economics with the tools of mainstream economics. The founding leader of Millî Görüs movement in Turkey, Necmettin Erbakan, and a group of Islamic intellectuals, had developed an economic program known as the just system. This paper aims to attempt to model the just economic system (the JES) with appropriate econometric techniques.

Design/methodology/approach

This paper models the macroeconomics of the JES with linear equations and conducts a series of simulations to identify its outputs. Based on the closed economy assumption, this paper describes the production function with a government share, defines a charitable foundation sector, exclude the speculation motive in money demand. Savings are transferred into investments without interest. This paper also develops an econometric simultaneous-equation model of the JES.

Findings

According to the results obtained from the selected simulation scenarios, this paper concludes that the macroeconomic JES works well and produces desirable outputs as it was stated in the original program.

Research limitations/implications

In future studies, the econometric estimations of the JES can be made. By adding more equations to the simple model, a medium or large scale JES macroeconomic model can be developed.

Practical implications

The JES can now be a source of economic policy designs.

Social implications

The model can be used to address socioeconomic objectives.

Originality/value

It is the only Islamic economic model that has been ever developed in Turkey. The notion of the JES has not been subjected to enough economic analysis and as far as it is known, it has not yet been modeled and simulated.

Details

International Journal of Islamic and Middle Eastern Finance and Management, vol. 14 no. 2
Type: Research Article
ISSN: 1753-8394

Keywords

Content available
Article
Publication date: 21 December 2020

Dicle Aydin and Gevher Sayar

The purpose of this paper is to assess using of balconies in apartment buildings. In the research, by questioning the use of balconies as to the coronavirus disease 2019…

2117

Abstract

Purpose

The purpose of this paper is to assess using of balconies in apartment buildings. In the research, by questioning the use of balconies as to the coronavirus disease 2019 (COVID-19) process and before, the place and importance of the balcony in the apartment house were questioned.

Design/methodology/approach

Balcony performance dimensions and components, which were revealed based on the studies conducted, were analyzed with questions directed to the individuals living in the apartment (one person every flat). In the research in which behavioral and functional performance is questioned through users, the survey method was used and the data were analyzed in the Statistical Product and Service Solutions (SPSS) program. Apart from the performance dimensions, data on the characteristics of the balconies were also obtained from the answers of the users.

Findings

The use of balconies has increased during the pandemic process and has become more important in apartments. The size of the balcony is related to the size of the house. The functional performance of the balcony is linked to the size of the balcony, behavioral and environmental values. The balcony should be large enough to accommodate equipment for daily activities, the proximity to the surrounding buildings, view, noise affect the performance of the balcony.

Research limitations/implications

The research is limited to the questionnaire applied to apartment users in Konya (Turkey) city center. Male and female users participated in the study, and the use of the balcony was questioned.

Practical implications

Apartment design includes results that contribute to architects regarding the location and use of the balcony. It also includes the results that can be evaluated by local governments in terms of binding rules on balconies in zoning regulations.

Social implications

The balcony is one of the rooms of the house, which is mainly designed in connection with the kitchen and living room / living room and shared by the household. The balcony is used as a socializing place for the common actions of the house users. This space that opens to the outside is valuable in terms of providing communication with people outside.

Originality/value

The fact that no study has been conducted to question the use of the balcony over the user makes this study valuable. In addition, questioning the use of the balcony during the pandemic process is important in terms of revealing the importance of the need for open space in an apartment. The results will contribute to architects and local administrations in terms of binding rules in design regarding the location of the balcony in the house.

Details

Archnet-IJAR: International Journal of Architectural Research, vol. 15 no. 1
Type: Research Article
ISSN: 2631-6862

Keywords

Article
Publication date: 19 November 2021

Selman Bayrakcı and Ceyhun Can Ozcan

The study aims to determine the socio-cultural variables that affect Turkey's tourism demand. The study proposes how important socio-cultural determinants as well as…

Abstract

Purpose

The study aims to determine the socio-cultural variables that affect Turkey's tourism demand. The study proposes how important socio-cultural determinants as well as economic determinants affect tourism demand.

Design/methodology/approach

The study examined a sample of 19 countries sending the most visitors to Turkey between 1996 and 2017 by using panel unit root, panel cointegration tests and cointegration estimator methods. The data set consists of variables such as GDP per capita (lnGDPP), total population number (lnPOP), urbanization level, information and communication technology (lnICT), human development index (lnHDI), education level and death rates (lnDTH).

Findings

The findings from the analysis provide evidence that the variables in the models show the expected effects on tourism demand. The findings show that apart from economic variables, socio-cultural variables also have an important effect on tourism demand.

Research limitations/implications

The socio-cultural models used in the study were created using variables that can be quantified. The study results are valid for the countries included in the analysis.

Practical implications

The findings of this study will contribute to policymakers in determining the market for Turkish tourism. The results show that the policies to be prepared by considering the socio-cultural characteristics of countries can increase the tourism demand.

Originality/value

The study is significant in that it focuses on socio-cultural variables rather than economic variables commonly used in the literature. The study is original in terms of both the study sample and the model and considers cross-sectional dependency (CD) and homogeneity.

Details

Journal of Hospitality and Tourism Insights, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2514-9792

Keywords

Article
Publication date: 31 May 2022

Mehmet Numan Kaya, Oguz Uzol, Derek Ingham, Faruk Köse and Riza Buyukzeren

The purpose of this paper is to thoroughly investigate the aerodynamic effects of blade pitch angle on small scaled horizontal axis wind turbines (HAWTs) using…

Abstract

Purpose

The purpose of this paper is to thoroughly investigate the aerodynamic effects of blade pitch angle on small scaled horizontal axis wind turbines (HAWTs) using computational fluid dynamics (CFD) method to find out the sophisticated effects on the flow phenomena and power performance.

Design/methodology/approach

A small HAWT is used as a reference to validate the model and examine the aerodynamic effects. The blade pitch angle was varied between +2 and −6 degrees, angles which are critical for the reference wind turbine in terms of performance, and the CFD simulations were performed at different tip speed ratio values, λ = 2, 3, 4, 5, 6, 7, 9 and 10.5 to cover the effects in various conditions. Results are examined in two different aspects, namely, general performance and the flow physics.

Findings

The power performance varies significantly according to the tip speed ratio; the power coefficient increases up to a certain pitch angle at the design tip speed ratio (λ = 6); however, between λ = 2 and 4, the more the blade is pitched downwards, the larger is the power coefficient, the smaller is the thrust coefficient. Similarly, for tip speed ratios higher than λ = 8, the positive effect of the low pitch angles on the power coefficient at λ = 6 reverses. The flow separation location moves close to the leading edge at low tip speed ratios when the blade is pitched upwards and the also tip vortices become more intense. In conclusion, the pitch control can significantly contribute to the performance of small HAWTs depending on different conditions.

Originality/value

In the literature, only very little attention has been paid to the aerodynamic effects of pitch angle on HAWTs, and no such study is available about the effects on small HAWTs. The change of blade pitch angle was maintained at only one degree each time to capture even the smallest aerodynamic effects, and the results are presented in terms of the power performance and flow physics.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0961-5539

Keywords

Content available
Article
Publication date: 10 June 2021

Claudia Seabra, Miral AlAshry, Kevser Çınar, Irfan Raja, Manuel Reis and Najma Sadiq

The purpose of this study is to analyze the impact of the acceptance of national governments’ restrictions imposed due to the COVID-19 pandemic on the citizens’ safety…

2523

Abstract

Purpose

The purpose of this study is to analyze the impact of the acceptance of national governments’ restrictions imposed due to the COVID-19 pandemic on the citizens’ safety perceptions of daily life and future plans. In particular, the aim is to examine the relationship among the citizens who belong to Generations Y and Z and who represent the future of tourism markets, as tourists and as host communities, in three important receiving countries, namely, Egypt, Portugal and Turkey.

Design/methodology/approach

This pilot project gathers data from three important receiving countries located on two continents involving 348 residents from Generations Y and Z. To identify the factors underlying the “acceptance of restrictions and measures” and the “Impacts of the COVID-19 threat on safety perceptions” a factor analysis was carried out. Notably, Pearson's correlation coefficient and a multiple linear regression analysis allowed to analyze the relationships between the two factors and a Kruskal–Wallis test was used to assess the influence of individuals’ country of residence.

Findings

The results reveal that in general, young generations accepted the measures and restrictions imposed by the respective governments. In addition, the present pandemic has a strong impact on their safety perception in daily lives and future plans to travel. Moreover, results prove that between the three countries there are dissimilarities showing that the countries' situation regarding COVID-19 influences those two dimensions.

Research limitations/implications

This study adds to the development of studies on the impacts of health risks in tourism activity, specifically on the safety measures adopted and their impacts on local receiving communities. It shows that the current pandemic is severely affecting the daily lives and plans for the future of citizens and tourists, which is in accordance with previous studies.

Practical implications

The outcome of this study paves the way for policy-makers in the tourism industry because it presents experiences from Generations Y and Z members, future customers and tourist products consumers, but also from receiving communities.

Social implications

The results of this study bring some light on how local communities, specifically, the younger generations, are facing this pandemic period and on the impact it has on the way they face daily life, future plans and on their level of acceptance of a sector as important as tourism.

Originality/value

To the knowledge, besides the relevant studies already conducted on the impact of the COVID-19 crisis on the tourism field, no study has yet been carried out to analyze how residents have reacted and accepted the restrictions and security measures imposed by their national governments and their impact on residents’ feelings and perceptions, daily lives and travel plans. Furthermore, the specific impacts of this crisis will have on the younger generations are yet to be analyzed.

Details

International Journal of Tourism Cities, vol. 7 no. 2
Type: Research Article
ISSN: 2056-5607

Keywords

Expert briefing
Publication date: 13 February 2020

Erdogan is the second head of government (after Necmettin Erbakan, 1996-97) to emerge from a specifically Islamist political movement. Under his leadership, Islam has…

Article
Publication date: 2 October 2017

Kerem Kilicer, Ahmet Naci Coklar and Vildan Ozeke

The purpose of this paper is to develop a scale to measure the level of cyber human values based on the behaviors of social media users in cyberspace.

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Abstract

Purpose

The purpose of this paper is to develop a scale to measure the level of cyber human values based on the behaviors of social media users in cyberspace.

Design/methodology/approach

The paper is based on a scale-development process by following a systematic approach. First, the current scales were examined; following this, focus group interviews were held; next, an item pool was formed; and the validity and reliability of the items were tested. The validity and reliability studies of the scale were conducted with 1,495 social media users. An application on Facebook was used to collect the data.

Findings

As a result of the validity study, 25 items under five factors were obtained. These factors were being peaceful, truth, solidarity, respect and tolerance. The items obtained were capable of discriminating the individuals in terms of the features to be measured by the scale. In addition, the scale was confirmed to measure correctly the structure obtained in line with the fit indices. The internal consistency coefficient of the scale was 0.90 and split-half reliability coefficient was 0.88.

Research limitations/implications

The sample has several limitations. Most of the participants were male and the data were collected on social media. Thus, to enhance the validity and reliability of the scale, further in-depth qualitative and cross-cultural studies should be examined.

Practical implications

This study could provide convenience for practitioners about how to diagnose the cyber human values of the internet users in cyberspace.

Originality/value

It was concluded that this scale was valid, reliable and beneficial to measure social media users’ levels of cyber human values.

Details

Internet Research, vol. 27 no. 5
Type: Research Article
ISSN: 1066-2243

Keywords

Article
Publication date: 3 July 2018

Banu Sugözü, Behcet Dağhan and Ahmet Akdemir

The purpose of this paper is to study the potential of alumina (Al2O3) in nanometer size in automotive brake friction materials.

Abstract

Purpose

The purpose of this paper is to study the potential of alumina (Al2O3) in nanometer size in automotive brake friction materials.

Design/methodology/approach

Four brake linings containing alumina differing in particle size (355 µm and 80 nm) and various amount (5 and 10 Wt.%) were designed and produced. The hardness, density and porosity of the samples were measured. All samples were tested on a full-scale brake dynamometer with gray cast iron disc to determine the tribological properties. Detailed examinations on the worn surface were analyzed using a scanning electron microscopy.

Findings

It was concluded that all performance parameters were beneficially affected because of nano alumina.

Originality/value

This paper emphasizes the importance of nano-composites in the automotive industry and helps industrial firms and academicians working on wear of materials.

Details

Industrial Lubrication and Tribology, vol. 70 no. 6
Type: Research Article
ISSN: 0036-8792

Keywords

Article
Publication date: 22 November 2017

Gökhan Özaslan

The purpose of this paper is to describe the variations in the ways that principals conceptualize their basis of power in schools.

Abstract

Purpose

The purpose of this paper is to describe the variations in the ways that principals conceptualize their basis of power in schools.

Design/methodology/approach

Phenomenography was used as the research method of this study. The interviewees consisted of 16 principals, eight from public schools and eight from private schools.

Findings

The analysis of the interviews revealed eight ways of understanding a principal’s power basis. These potential power bases were: teachers’ sense of reciprocity; teachers’ sense of responsibility; organizational rules and regulations; principals’ deep knowledge and experience; in-service training; principals’ reputation for being fair and impartial; teachers’ sense of identification with their principal; and principals’ control over teachers’ employment. Participants from public and private schools held generally similar conceptions. The conception of in-service training remained limited to private school principals. The power basis of principals’ control over teachers’ employment was not emphasized but could still be perceived as a conception in certain statements by participants.

Research limitations/implications

Coercive power and legitimate power of reciprocity need to be investigated more thoroughly in the field of educational administration.

Practical implications

There is an urgent need for training for principals to raise their awareness of the adverse effect that coercive power has on teachers.

Originality/value

This study is the first known to explore variations in the ways that principals conceptualize their power basis.

Details

Journal of Educational Administration, vol. 56 no. 2
Type: Research Article
ISSN: 0957-8234

Keywords

Article
Publication date: 8 July 2019

Gökhan Özaslan

The purpose of this paper is to describe the various ways in which a group of principals conceptualize the power basis of teachers within teacher–principal interactions.

Abstract

Purpose

The purpose of this paper is to describe the various ways in which a group of principals conceptualize the power basis of teachers within teacher–principal interactions.

Design/methodology/approach

The present study takes power as a potential to influence people as it was conceptualized in the taxonomy developed by French and Raven (1959/1968) and Raven (1993). This taxonomy was also used to discuss the conceptions emerged in the interview data. A total of 16 principals, 8 from public schools and 8 from private schools, were interviewed.

Findings

The phenomenographic analysis of the interviews with the 16 principals revealed five ways of understanding teachers’ power basis. These conceptions (in the form of categories of description) were: (a) the principal’s sense of reciprocity, (b) teachers’ field-specific knowledge, (c) teachers’ administrative experience, (d) teachers’ union affiliation and (e) teachers’ legal rights. Categories (a) and (b) were common to all the study’s participants. Category (c) was unique to participants from private schools, while categories (d) and (e) were unique to participants from public schools.

Research limitations/implications

Three topics – the subtler forms of legitimate power, the issue of teacher tenure and the influence of unions on the educational system – appeared to have potential for interesting future studies in the field of educational management.

Practical implications

There is an apparent need to include social power as a course component in preparatory programs for educational administrators. The revised power taxonomy, which took its final form after the revisions made by Raven (1993), appeared to be an adequate explanatory theory to understand the teachers’ bases of power, and as such, it can be used to structure the content of the course about power interactions in school settings. In addition, the Turkish Ministry of National Education should handle the issue of unions’ improper influence over the educational system and take necessary measures in order to maintain the effective functioning of public schools.

Originality/value

To date, subordinates’ bases of power as a research subject has apparently been ignored. The present study is the first to reveal variations in the ways that school principals conceptualize teachers’ basis of power. Although the study data were collected in one city in Turkey, the research implications drawn from its findings can inspire interest in this neglected field of study all around the world.

Details

International Journal of Educational Management, vol. 33 no. 5
Type: Research Article
ISSN: 0951-354X

Keywords

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