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Article
Publication date: 14 February 2022

Mustafa Akbulut and Ahmet H. Ertas

The purpose of this study is to, first, provide an overview of the previously conducted works related to thermal analysis of space equipment, including battery packages…

205

Abstract

Purpose

The purpose of this study is to, first, provide an overview of the previously conducted works related to thermal analysis of space equipment, including battery packages, especially lithium (Li)-ion ones. Second, the need for a reduced thermal mathematical model (RTMM) and a procedure devising it is defined. Finally, an experimental steady-state temperature distribution test is conducted to finalize the RTMM study.

Design/methodology/approach

This study was carried out as part of a development project for thermal analysis of Li-ion battery packages used in a space equipment. The study presents certain stages of the design of the battery pack in parallel with battery technology development. Following a literature review, a numerical thermal analysis is conducted; then interface thermal conductance values are found out by means of the first law of thermodynamics; and the study is completed with the help of an experimental test.

Findings

The study provides key aspects for a successful battery-package thermal design for a space equipment. Additionally, the study summarizes the experimental results used in the RTMM process and the computed thermal conductance values between node couples.

Practical implications

Thermal analysis is important and vital in space equipment considering their harsh working conditions and environments. Hence, the study provides a RTMM for the thermal analysis of Li-ion battery packages, instead of a full finite element model, to save computational time and CPU usage. The findings are supported by experimental results. Hence, presented details can be used as guidelines for enterprises having a goal of battery package technology achievement, including design and manufacturing.

Originality/value

After providing a literature review of studies conducted on satellite subsystems including Li-ion batteries, this study presents a clear, complete and verified process of a RTMM for a Li-ion battery package in aero/space structures design. It presents details of building up a model and calculation methodology through an iterative procedure in which an optimization algorithm known as particle swarm optimization (PSO) was benefitted. In the RTMM, additionally, experimental temperature distributions obtained through thermal vacuum test were presented. It has been shown that the model can be used reliably in designing space equipments.

Details

Aircraft Engineering and Aerospace Technology, vol. 94 no. 6
Type: Research Article
ISSN: 1748-8842

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Article
Publication date: 7 November 2022

Baljinder Kour, Mustafa Inc and Ashish Arora

The purpose of this paper is to present the residual power series method for solving the space time fractional variable coefficients Ito system.

102

Abstract

Purpose

The purpose of this paper is to present the residual power series method for solving the space time fractional variable coefficients Ito system.

Design/methodology/approach

A weighted algorithm based on the residual power series method is used numerical solution of the space time fractional Ito system variable coefficients. The authors show that this technique yields the analytical solution of the desired problem in the form of a rapidly convergent series with easily computable components.

Findings

The authors illustrate that the proposed method produces satisfactory results with respect to the other semi analytical methods. The reliability of the method and the reduction in the size of computational domain give this method a wider applicability.

Originality/value

This research presents, for the first time, a new modification of the proposed technique for aforementioned problems and some interesting results are obtained.

Details

Multidiscipline Modeling in Materials and Structures, vol. 19 no. 1
Type: Research Article
ISSN: 1573-6105

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Article
Publication date: 25 September 2024

Mustafa Tanrıverdi, Onur Ceran, Mevlüt Uysal and Mutlu Tahsin Üstündağ

Sustainability and accessibility of education are the main purposes of educational institutions. Higher education institutions (HEIs) have been addressing these concerns through…

128

Abstract

Purpose

Sustainability and accessibility of education are the main purposes of educational institutions. Higher education institutions (HEIs) have been addressing these concerns through their distance education departments for years. Especially during and after the COVID-19 pandemic, HEIs encountered challenges related to productivity, escalating costs and decreasing user satisfaction with distance education. This study proposes the integration of new and suitable information technologies (ITs) into the steps of lean management (LM) implementation. It suggests that this approach will be highly effective and beneficial, providing solutions to the problems above in higher education (HE) field. The study aims to highlight the effectiveness and benefits of incorporating new and suitable ITs into the application stages of LM principles. Sample applications in HE will be provided to enhance understanding.

Design/methodology/approach

A model is introduced for researching new ITs and incorporating appropriate ones in the application steps of LM. This model has been applied and analyzed in two case studies at Gazi University for a more comprehensive understanding.

Findings

When examining periodic surveys and usage statistics from case studies, it becomes evident that implementing LM with the support of ITs reduces waste and enhances the quality of existing work. The success observed in the case studies was notably influenced by managers’ proficiency in business processes, experience in ITs, managerial skills and support from senior management.

Practical implications

This case study provides a roadmap and step-by-step implementation of LM with IT support for HEIs. The implementation process and results will also be guiding for other sectors.

Originality/value

There is a notable absence of significant studies on integrating ITs, which have become crucial in today’s context in the stages of LM implementation. This study is envisioned as a pioneering endeavor to address this gap in the literature. Notably, challenges exist in applying LM principles outside production sectors, and limited research has been conducted. This study aims to pave the way for further research in diverse fields by conducting a comprehensive case study in the realm of HE.

Details

International Journal of Lean Six Sigma, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2040-4166

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Available. Content available
Book part
Publication date: 25 May 2021

Abstract

Details

Contemporary Issues in Social Science
Type: Book
ISBN: 978-1-80043-931-3

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Book part
Publication date: 5 November 2016

Çağrı Eryılmaz

During Gezi Protests of June 2013, hundred thousands of people from different and even opposite groups were together on the streets of Turkey against government for a month. The…

Abstract

During Gezi Protests of June 2013, hundred thousands of people from different and even opposite groups were together on the streets of Turkey against government for a month. The abruptness, severity, diversity and creativity of Gezi Movement make it unique among urban movements in Turkey. Protesters not only challenged the police violence and authoritarian policies but also defended public spaces of their city. My analysis of Gezi Movement is based on the comparison of Lefebvre, Harvey, and Bookchin who all integrated the critique of capitalism and revolutionary vision into urban movements. However, they are different in terms of what revolution, city, class, citizen, and urban social movements are. Gezi Movement is discussed through the similarities and differences of three approaches.

Gezi Movement is a good example of New Social Movements which lacks an organization, hierarchy and a leader. As an urban movement it provided a glimpse of heterotopia of Lefebvre where many different groups and identities challenge the abstract space of neoliberal capitalism. The protesters, as the producers and the consumers of urban commons claimed Gezi Park and Taksim Square as Harvey stated. The transformation of protests into neighborhood forums despite losing power and participation shows the civic potential of urban movement that may develop direct democracy of citizens as a revolutionary alternative to capitalism. The spatial analysis of Gezi Movement provided insight to the revolutionary potential of urban movements in neoliberal age.

Details

Public Spaces: Times of Crisis and Change
Type: Book
ISBN: 978-1-78635-463-1

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Book part
Publication date: 19 September 2012

Mustafa E. Gürbüz and Mary Bernstein

This paper examines the divergent reactions of the two most prominent Turkish-Islamic movements to a crisis in the Parliament that centered on an elected Deputy's right to wear…

Abstract

This paper examines the divergent reactions of the two most prominent Turkish-Islamic movements to a crisis in the Parliament that centered on an elected Deputy's right to wear the headscarf. After the crisis, the National Outlook movement protested, while the Gülen movement became more conciliatory. Drawing on the Multi-Institutional Politics model, we argue that conflicting views on the nature of domination explain the disparate forms of collective action taken by the two movements. We introduce the concept “strategic nonconfrontation” as a type of nonviolent strategy to help understand the Gülen's movement's actions. We expand the nonviolent civil resistance literature by arguing that strategic nonconfrontation as a form of nonviolent resistance only becomes visible when we move beyond an exclusive focus on state power to understand the ways in which multiple systems of authority and power are constituted in society and perceived by activists. We analyze the discourse in newspapers produced by the movements in order to examine how each movement understood and defined the target of action and how that influenced their subsequent strategies.

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Article
Publication date: 19 June 2023

Okan Çolak and Halil Ibrahim Karakan

This study aims to determine museum experiences by analyzing the TripAdvisor reviews of the museum visitors in Gaziantep and offer suggestions for improving the visitors'…

717

Abstract

Purpose

This study aims to determine museum experiences by analyzing the TripAdvisor reviews of the museum visitors in Gaziantep and offer suggestions for improving the visitors' experiences by taking museum curators' opinions.

Design/methodology/approach

The case study method was used as one of the qualitative approaches in the study. The research comprises two stages. TripAdvisor reviews about five museums in Gaziantep were analyzed in the first stage, and museum curators' opinions on the visitor complaint reasons and solution suggestions were discussed in the second stage.

Findings

The study showed that satisfying or non-satisfying experience factors might differ according to visitors, museum curators and both visitors and museum curators. Therefore, each museum curator should effectively manage every component of visitor experience factors by its target audience.

Research limitations/implications

Although this study has some valuable findings and contributes to the literature, it also has limitations. The study's sample consists of five museums in Gaziantep. Further studies can be carried out on a larger population and sample. The data for determining visitor experiences, the first stage of the research, were obtained only from an online platform (TripAdvisor).

Practical implications

The proposed model provides a holistic perspective on evaluating and managing visitor experience. There may be structural problems (small size of the museum area, lack of parking spaces and elevators, etc.) with the museum beyond the manager's control. Also, the lack of information and communication (limited concept, lack of artifacts, etc.) causes criticisms of the museum.

Social implications

This paper contributes to the museum management literature with a model for enriching the quality of the museum experience and increasing the museum's attractiveness. The study showed that museums contribute to the visitor's experience in all dimensions. While visitors thought museums primarily contribute to object experience, museum curators thought museums contribute more to visitors' cognitive experience and other experience elements.

Originality/value

The present study analyzed the visitor comments and the opinions of museum curators from a holistic perspective, considering the internal and external factors that are effective in the visitor experience, and revealed the reasons for the visitors' negative experience and the solution suggestions toward the improvement of the visitor experience.

Details

Journal of Hospitality and Tourism Insights, vol. 7 no. 4
Type: Research Article
ISSN: 2514-9792

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Book part
Publication date: 30 March 2016

Evren Savcı

Departing from Turkish national debates around Islam, national belonging, and homosexuality during 2008–2011, this paper shows how “LGBT rights” discourses ultimately worked to…

Abstract

Departing from Turkish national debates around Islam, national belonging, and homosexuality during 2008–2011, this paper shows how “LGBT rights” discourses ultimately worked to position Muslim headscarf activists as against LGBT activists by rendering complex positions that do not follow easy “for vs. against” LGBT rights political formulas as “homophobic.” In return, this foreclosed potential solidarities differently injured citizens could have formed against increasing neoliberal state violence. I show that the multitude of Muslim women’s positions on the issue of LGBT rights complicates easy religious/secular binaries and illuminates how it is not only human rights discourses but also their “Western” critiques that travel transnationally. This story also contributes to current debates on postsecularism by illustrating how the same national context can house both liberal rights frameworks that can be used against pious Muslim subjects, and a monopolization of a definition of Islam for state power. Finally, I offer “politics of cruelty” and “right to sin” as alternative frameworks for imagining social justice outside of liberal rights-based politics.

Details

Perverse Politics? Feminism, Anti-Imperialism, Multiplicity
Type: Book
ISBN: 978-1-78635-074-9

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Article
Publication date: 31 July 2009

Muhammad Mustafa Kamal and Mohamed Alsudairi

The application of enterprise application integration (EAI) technologies in integrating heterogeneous information systems (IS) has been pursued by several private and public…

1538

Abstract

Purpose

The application of enterprise application integration (EAI) technologies in integrating heterogeneous information systems (IS) has been pursued by several private and public organisations. However, where EAI has added effectiveness and strengthened the information technology infrastructures in the private domain, local government authorities (LGAs) have been slow in adopting cost‐effective EAI solutions to significantly expand the capabilities of their conventionally inflexible IS. Despite EAI represents an attractive proposition to LGAs and offers the opportunity to leverage the IS into a seamless chain of processes, EAI has not been widely investigated in LGAs. Literature indicates several research studies mainly focusing on a number of different factors (e.g. benefits, barriers) influencing EAI adoption. However, due to plethora of different factors, it may not be sufficient for LGAs to take decisions by merely focusing on factors. Thus, the purpose of this paper is to assess and prioritise the factors influencing EAI adoption in LGAs through the analytic hierarchy process (AHP) technique.

Design/methodology/approach

To investigate the less acknowledged phenomena like EAI adoption in LGAs, the author follows an interpretive, qualitative case study approach to conduct this research. This approach will assist in examining the phenomenon in its natural setting, examine the in‐depth complexities and processes, e.g. analysing and prioritising the importance of factors influencing the decision‐making process for EAI adoption, and provide considerable flexibility during interviews and observations.

Findings

According to the empirical findings, the proposed EAI adoption factors are appropriate for studying the research context. The analysis and study of the factors is made carefully and specifically to fit and be compatible within the context of an LGA. As a result, it is apparent from the empirical findings that most of the factors have influenced the decision‐making process for EAI adoption except two factors that are not tested.

Originality/value

The author takes into consideration the literature void and prioritise the importance the factors by introducing the AHP technique. This technique is substantial as it may enhance the analysis of EAI adoption in LGAs, tests and justifies the feasibility of AHP technique by a case study, and facilitates LGAs in realising the importance of EAI adoption factors. Hence, it significantly contributes to the body of knowledge and practice in this area and providing sufficient support to the management by speeding up the EAI adoption process.

Details

Transforming Government: People, Process and Policy, vol. 3 no. 3
Type: Research Article
ISSN: 1750-6166

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Article
Publication date: 28 February 2024

Mustafa Saritepeci, Hatice Yildiz Durak, Gül Özüdoğru and Nilüfer Atman Uslu

Online privacy pertains to an individual’s capacity to regulate and oversee the gathering and distribution of online information. Conversely, online privacy concern (OPC) pertains…

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Abstract

Purpose

Online privacy pertains to an individual’s capacity to regulate and oversee the gathering and distribution of online information. Conversely, online privacy concern (OPC) pertains to the protection of personal information, along with the worries or convictions concerning potential risks and unfavorable outcomes associated with its collection, utilization and distribution. With a holistic approach to these relationships, this study aims to model the relationships between digital literacy (DL), digital data security awareness (DDSA) and OPC and how these relationships vary by gender.

Design/methodology/approach

The participants of this study are 2,835 university students. Data collection tools in the study consist of personal information form and three different scales. Partial least squares (PLS), structural equation modeling (SEM) and multi-group analysis (MGA) were used to test the framework determined in the context of the research purpose and to validate the proposed hypotheses.

Findings

DL has a direct and positive effect on digital data security awareness (DDSA), and DDSA has a positive effect on OPC. According to the MGA results, the hypothesis put forward in both male and female sub-samples was supported. The effect of DDSA on OPC is higher for males.

Originality/value

This study highlights the positive role of DL and perception of data security on OPC. In addition, MGA findings by gender reveal some differences between men and women.

Peer review

The peer review history for this article is available at: https://publons.com/publon/10.1108/OIR-03-2023-0122

Details

Online Information Review, vol. 48 no. 5
Type: Research Article
ISSN: 1468-4527

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