The electric energy stored in PEDOT:PSS capacitors integrated on textile substrate

2018 ◽  
Vol 30 (6) ◽  
pp. 808-816 ◽  
Author(s):  
Sheilla Atieno Odhiambo ◽  
Piotr Fiszer ◽  
Gilbert De Mey ◽  
Carla Hertleer ◽  
Ida Nuramdhani ◽  
...  

Purpose The purpose of this paper is to develop a capacitor fully integrated into a wearable textile fabric for the application on smart clothing. Design/methodology/approach A small capacitor with stainless steel yarns as the electrodes and poly-(3,4–ethylenedioxythiophene): polystryrene sulphonate (PEDOT:PSS) as the dielectric material has been made, integrated into a textile fabric. The electric performance of the capacitor was analyzed and compared with other kinds of electric capacitors. Findings The fabricated small, PEDOT:PSS capacitor could finally power a calculator for 37 s with the energy stored in it. Originality/value This finding is of an important significance for a further development on the capacitor with a better performance.

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Hala Messai ◽  
Salim Meziani ◽  
Athmane Fouathia

Purpose The purpose of this paper is to highlight the performance of the Chaboche model in relation to the database identification, tests with imposed deformations were conducted at room temperature on 304L stainless steel specimens. Design/methodology/approach The first two tests were performed in tension-compression between ±0.005 and ±0.01; in the third test, each cycle is composed of the combination of a compression tensile cycle between ±0.01 followed by a torsion cycle between ±0.01723 (non-proportional path), and the last, uniaxial ratcheting test with a mean stress between 250 MPa and −150 MPa. Several identifications of a Chaboche-type model were then performed by considering databases composed of one or more of the cited tests. On the basis of these identifications, the simulations of a large number of ratchet tests in particular were carried out. Findings The results present the effect of the optimized parameters on the prediction of the behavior of materials which is reported in the graphs, Optimizations 1 and 2 of first and second tests and Optimization 4 of the third test giving a good prediction of the increasing/decreasing pre-deformation amplitude. Originality/value The quality of the model's predictions strongly depends on the richness of the database used for the identification of the parameters.


2015 ◽  
Vol 27 (3) ◽  
pp. 303-315 ◽  
Author(s):  
Sandra Klute-Wenig ◽  
Robert Refflinghaus

Purpose – The purpose of this paper is the further development of an Excel-based integrated management system for the tool and cutlery industry regarding sustainability. The tool’s actual status allows integrating and implementing requirements considering work safety, environmental and quality management and a self-assessment for checking the level of requirements’ fulfilment. However, the topic of sustainability and requirements and risks going along with it are of great importance for the mostly small and medium companies of this industry. Therefore, the Excel-tool is being enhanced by integrating the requirements of risk, energy and sustainability management. The paper presents the advanced Excel-tool. Design/methodology/approach – The base for advancing the Excel-tool has been analysing the status quo of sustainability management in the companies. Moreover, a matrix for comparing the requirements has been enlarged regarding the standards for sustainability, risk and energy management and builds the base for further developing of the Excel-tool. Findings – This analysis has shown the need for action, regarding the topic of sustainability. Hence, the Excel-tool has been enlarged regarding the assessment of fulfilling the requirements of different management systems. It allows small- and medium-sized enterprises a detection of need for action to comply with the requirements of different management systems with minimal afford. By this, an easily evaluation and improvement of the companies’ management systems is enabled. Originality/value – The tool enables companies to easily evaluate the state of their integrated management system by themselves and assists when implementing additional management systems.


2017 ◽  
Vol 69 (2) ◽  
pp. 182-189
Author(s):  
Lubomir Krabac ◽  
Vladimir Pejaković ◽  
Vladislav Drinek ◽  
Nicole Dörr ◽  
Ewald Badisch

Purpose The purpose of this paper is to study the friction and wear behavior of germanium (Ge) thin films deposited by low-pressure chemical vapor deposition method on a chromium (Cr)-nickel (Ni) stainless steel substrate after being exposed to relatively mild sliding conditions (low loads and sliding distances). Design/methodology/approach Wear and friction experiments were conducted with a 100Cr6 steel ball sliding against flat Ge thin-film-coated stainless steel sheets (ball-on-flat microtribometer, no lubricant, normal loads of 50-100 mN, initial Hertzian contact pressures of 385-485 MPa, total sliding distance up to 200 mm and room temperature). Findings Scanning electron microscopy results revealed that prepared Ge thin films consisted of two different morphologies: curved nanowires and cone-shaped nano-/microdroplets. Regarding friction and wear characteristics of the investigated samples, the substrates coated with Ge thin films did not affect the coefficient of friction significantly by load. The wear of the base material (Cr-Ni stainless steel) was not observed under the mentioned experimental conditions (see the “Design/methodology/approach” section); however, with increased sliding distance and/or applied load, a rupture of the Ge film and an exposure of the stainless steel substrate to the 100Cr6 ball can be expected. Furthermore, the observations suggest that the smearing of Ge nano- and microstructures, plastically deformed during tribotesting, over the surface exposed to the sliding contact is the dominant tribological process. Originality/value For the first time, the tribological interaction between Ge thin film and steel surface was investigated under dry sliding conditions using a ball-on-flat microtribometer, and the obtained results provide a useful base for the further research on tribology of Ge-based thin films.


2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Noradilah Abdul Hadi ◽  
Mohd Rizal Muwazir

Purpose The purpose of this paper is to examine selection factors among multi-ethnic customers in Malaysian Islamic banking industry. The information is important to reinforce the argument that ethnicity could become significant factor in determining customer behaviour. Design/methodology/approach This study uses quantitative approach by using questionnaire (Likert scale) to measure respondents ranking of 25 selection factors. A total of 272 valid responses were generated from 450 questionnaires distributed, with 60.4% response rate. The methods of analysis used are descriptive analysis, factor analysis and Kruskal–Wallis test. Findings The findings revealed five selection factors (religious and ethical, services and convenience, service quality and benefit, external and operational and charges), with religious and ethical factor as the most important criteria for Malay customers. As for Chinese and Indian customers, they chose services and convenience factor. Originality/value This study is conducted to gain new insights on the perception of multi-ethnic banking customers in Malaysia towards Islamic banks and how cultural differences might affect their decisions. The findings are important for further development of the Islamic banking industry in Malaysia considering ethnicity has a major impact on the society. The acknowledgement of similarities and differences between the ethnic groups could strengthen the relationship with the Islamic banking customers. Furthermore, incorporation of ethnicity factor in bank’s marketing strategies is important to secure competitive advantage particularly in dual banking system such as in Malaysia.


2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
I Putu Gede Sukaatmadja

Purpose This study aims to test and explain the implementation of the green marketing mix (GMM) strategy, based on an environmental orientation (EO) in increasing the competitive advantage (CA) of the real estate developers or companies in Indonesia. Design/methodology/approach This study was conducted at real estate developer companies in several cities in Bali, i.e. Denpasar, Gianyar, Buleleng, Singaraja and Tabanan of Bali Province, Indonesia, registered as a member of Real Estate Indonesia. Bali was chosen as a province with a very rapid growth of the property sector than other provinces in Indonesia. This study is about census research. The sample unit is a real estate developer in Bali whose scope of operation project is at least 20 hectares, which means the scale of the property business is middle-class and upper-class companies. The unit of analysis was developer companies in Bali, whereas the respondents were the General Manager, CEO or owners of the company. The respondents were chosen so that each question in the questionnaire could be filled correctly and accurately. Findings EO has a positive but insignificant effect on CA. On the other hand, EO has a positive and significant influence on the GMM strategy. Furthermore, the results show that the GMM strategy has a positive and significant effect on CA. Originality/value The originality of this study is evident from the effort to deepen the analysis and the results of the hypothesis testing of previous studies; hence, this study uses a GMM strategy for real estate developers as a service company. The mapping of the previous research is done uses variables related to current research. This study seeks to develop a model from some previous studies aimed at enriching the results of research for further development.


2019 ◽  
Vol 31 (3) ◽  
pp. 309-324 ◽  
Author(s):  
Ulf Johanson ◽  
Roland Almqvist ◽  
Matti Skoog

Purpose The purpose of this paper is to further develop a conceptual framework for analysing performance management systems (PMS). The framework aims to be useful for a rich understanding of a specific organisation’s PMS. At the same time, it should preferable be simple so that it could be used even in practice. The framework adds to earlier work by Malmi and Brown (2008), Ferreira and Otley (2009), Broadbent and Laughlin (2009), Bedford and Malmi (2015) and Johanson et al. (2001). Design/methodology/approach The paper is theoretical but has also been applied to a Swedish municipality. The purpose of the latter was to understand if the framework is feasible so far. Findings The authors hold that the framework in its present form is useful to use as an analytical tool even if it needs to be subjected to further development. Research limitations/implications The paper addresses an issue that is continuously changing. This means that the suggested framework may suffer from theoretical weaknesses in some respects. To balance between a theoretically deep and exhaustive framework and a framework that is simple enough to use is a tricky question that needs further investigation. Practical implications The ambition with the framework is that it shall be useful even in practice. Originality/value The need for further research in the PMS area has been emphasised by the above researcher but also by, e.g., Van Helden and Reichard (2016). They hold that the authors need rich European cases to improve the understanding of how PMS works. The authors hold that the present framework has the potential to meet the demands from Van Helden and Reichard.


2019 ◽  
Vol 33 (1) ◽  
pp. 152-177 ◽  
Author(s):  
Jan Bebbington ◽  
Henrik Österblom ◽  
Beatrice Crona ◽  
Jean-Baptiste Jouffray ◽  
Carlos Larrinaga ◽  
...  

Purpose The purpose of this paper is to interrogate the nature and relevance of debates around the existence of, and ramifications arising from, the Anthropocene for accounting scholarship. Design/methodology/approach The paper’s aim is achieved through an in-depth analysis of the Anthropocene, paying attention to cross-disciplinary contributions, interpretations and contestations. Possible points of connection between the Anthropocene and accounting scholarship are then proposed and illuminated through a case study drawn from the seafood sector. Findings This paper develops findings in two areas. First, possible pathways for further development of how accounting scholarship might evolve by the provocation that thinking about the Anthropocene is outlined. Second, and through engagement with the case study, the authors highlight that the concept of stewardship may re-emerge in discussions about accountability in the Anthropocene. Research limitations/implications The paper argues that accounting scholarship focused on social, environmental and sustainability concerns may be further developed by engagement with Anthropocene debates. Practical implications While accounting practice might have to change to deal with Anthropocene induced effects, this paper focuses on implications for accounting scholarship. Social implications Human well-being is likely to be impacted if environmental impacts accelerate. In addition, an Anthropocene framing alters the understanding of nature–human interactions and how this affects accounting thought. Originality/value This is the first paper in accounting to seek to establish connections between accounting, accountability and the Anthropocene.


2019 ◽  
Vol 46 (6) ◽  
pp. 761-783 ◽  
Author(s):  
Mohammad Hashemi Joo ◽  
Yuka Nishikawa ◽  
Krishnan Dandapani

Purpose The purpose of this paper is to recognize the benefits of the initial coin offering (ICO) as a way of raising funds and to present a detailed comparison between the ICO and the initial public offering to realize the future possibilities that this new funding method holds. Design/methodology/approach It is an exhaustive review of the ICO, the mechanism of crowdfunding, the blockchain technology behind it, benefits and current shortcomings of the ICO, and the potential future development of the ICO as a convenient and efficient way of raising capital. Findings ICOs have brought billions of dollars of funding to startups and projects worldwide in less than two years. Concurrently, many successful ICOs yielded extremely high returns to investors and believers of this new way of funding businesses. Research limitations/implications While the ICO is a revolutionary vehicle for business funding, it has raised concerns among users as well as potential investors about its risk and lack of regulation. The future of this innovative funding method highly depends on further development and placement of appropriate regulatory supervision, better understanding of risk and benefits and attaining the confidence of users. Originality/value This is a review of the advantages and drawbacks of the ICO. If the current fraud, market and cybersecurity risks can be mitigated and standardized regulations are developed, the ICO has a future to become an established way of capital funding or even replace the existing options, regardless of the size and age of companies.


2019 ◽  
Vol 36 (5) ◽  
pp. 815-839 ◽  
Author(s):  
Evangelos Psomas ◽  
Jiju Antony

Purpose Literature contributions to Lean manufacturing (LM) are fragmented and show some significant limitations. The purpose of this paper is to identify the existing research gaps in LM as well as to group them into respective themes. Design/methodology/approach A systematic literature review (SLR) of peer reviewed journal articles in LM was carried out by the authors, based on four major publishers, namely, Emerald Online, Science Direct, Springer Link and Taylor & Francis. In total, 120 articles published in 30 journals during 2005–2016 were collected which revealed LM research gaps. A simple affinity diagram was applied in order to group the research gaps into logical themes. Findings A large number of research gaps are identified in the LM literature and meaningful themes of these gaps are also revealed. Research limitations/implications The SLR carried out by the authors is based on only four academic journal publishers and some of other publishers might have been missed out in this search. Excluding articles focusing on an individual Lean principle or tool/technique is also a limitation of the present SLR. Practical implications Researchers and practitioners can use the LM research gaps presented in this study for further development of LM methodology. Originality/value Presenting LM research gaps analytically and grouping them into meaningful themes, significantly differentiates the present SLR study from those published so far.


2015 ◽  
Vol 27 (3) ◽  
pp. 281-293 ◽  
Author(s):  
Albert Weckenmann ◽  
Goekhan Akkasoglu ◽  
Teresa Werner

Purpose – The continuous development of quality management in organizations was driven on the one hand by competition and on the other hand by growing requirements of the customers. Mass production with a pure push strategy changed to a more and more pull strategy with higher customer and market orientation. To satisfy the requirements of the triangle quality, cost and time the field of view of quality management has continuously been widened from considering “what” is done to “how” it is done. Nowadays the complexity and interrelations inside and outside of organizations increased with their global orientation. To face these global challenges, the purpose of this paper is to do a detailed analysis of the history of quality management that can support the initial position in development of specific tools and methods for quality improvement in organizations. Design/methodology/approach – For the historic analysis a well-founded literature review has been performed. After presenting the historical development of quality management, the current situation described. Finally an outlook for upcoming trends in quality management is provided by extrapolating current developments. Findings – Four different paradigm shifts in quality management are up to now identified and described, accompanied by a high number of smaller development steps. Current efforts for the further development of quality management encompass “perceived quality”, “human-focused quality management” and “intelligent quality management”. Originality/value – The paper gives a survey on the development of quality management and delivers a forecast on future requirements and trends in structuring the quality management in technical enterprises.


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