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1 – 10 of 11Although universities have been decentralized for academic freedom and autonomy, resources are being increasingly centralized, and the role of central administration is growing…
Abstract
Although universities have been decentralized for academic freedom and autonomy, resources are being increasingly centralized, and the role of central administration is growing for efficiency and excellence reasons. At the same time, a division of labor is progressing by assigning specific tasks to professionals. The professionals are also centrally managed. Educational development was introduced by central administration to cope with the massification and quality assurance of higher education. Although it played a great part in promoting educational reform, it also suffered from the rejection of academics and the lack of methodology. Unlike ITC service and student service, educational development touches the autonomy of academics and is always torn between the central administration and academics. This chapter analyzes the structural and cultural difficulty of educational development in Japan by tracing its historical development and by comparing to other countries.
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Anshuman Kumar, Chandramani Upadhyay, Ram Subbiah and Dusanapudi Siva Nagaraju
This paper aims to investigate the influence of “BroncoCut-X” (copper core-ZnCu50 coating) electrode on the machining of Ti-3Al-2.5V in view of its extensive use in aerospace and…
Abstract
Purpose
This paper aims to investigate the influence of “BroncoCut-X” (copper core-ZnCu50 coating) electrode on the machining of Ti-3Al-2.5V in view of its extensive use in aerospace and medical applications. The machining parameters are selected as Spark-off Time (SToff), Spark-on Time (STon), Wire-speed (Sw), Wire-Tension (WT) and Servo-Voltage (Sv) to explore the machining outcomes. The response characteristics are measured in terms of material removal rate (MRR), average kerf width (KW) and average-surface roughness (SA).
Design/methodology/approach
Taguchi’s approach is used to design the experiment. The “AC Progress V2 high precision CNC-WEDM” is used to conduct the experiments with ϕ 0.25 mm diameter wire electrode. The machining performance characteristics are examined using main effect plots and analysis of variance. The grey-relation analysis and fuzzy interference system techniques have been developed to combine (called grey-fuzzy reasoning grade) the experimental response while Rao-Algorithm is used to calculate the optimal performance.
Findings
The hybrid optimization result is obtained as SToff = 50µs, STon = 105µs, Sw = 7 m/min, WT = 12N and Sv=20V. Additionally, the result is compared with the firefly algorithm and improved gray-wolf optimizer to check the efficacy of the intended approach. The confirmatory test has been further conducted to verify optimization results and recorded 8.14% overall machinability enhancement. Moreover, the scanning electron microscopy analysis further demonstrated effectiveness in the WEDMed surface with a maximum 4.32 µm recast layer.
Originality/value
The adopted methodology helped to attain the highest machinability level. To the best of the authors’ knowledge, this work is the first investigation within the considered parametric range and adopted optimization technique for Ti-3Al-2.5V using the wire-electro discharge machining.
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Hoda Sabry Sabry Othman, Salwa H. El-Sabbagh and Galal A. Nawwar
This study aims to investigate the behavior of the green biomass-derived copper (lignin/silica/fatty acids) complex, copper lignin/silica/fatty acids (Cu-LSF) complex, when…
Abstract
Purpose
This study aims to investigate the behavior of the green biomass-derived copper (lignin/silica/fatty acids) complex, copper lignin/silica/fatty acids (Cu-LSF) complex, when incorporated into the nonpolar ethylene propylene diene (EPDFM) rubber matrix, focusing on its reinforcing and antioxidant effect on the resulting EPDM composites.
Design/methodology/approach
The structure of the prepared EPDM composites was confirmed by Fourier-transform infrared spectroscopy, and the dispersion of the additive fillers and antioxidants in the EPDM matrix was investigated using scanning electron microscopy. Also, the rheometric characteristics, mechanical properties, swelling behavior and thermal gravimetric analysis of all the prepared EPDM composites were explored as well.
Findings
Results revealed that the Cu-LSF complex dispersed well in the nonpolar EPDM rubber matrix, in thepresence of coupling system, with enhanced Cu-LSF-rubber interactions and increased cross-linking density, which reflected on the improved rheological and mechanical properties of the resulting EPDM composites. From the various investigations performed in the current study, the authors can suggest 7–11 phr is the optimal effective concentration of Cu-LSF complex loading. Interestingly, EPDM composites containing Cu-LSF complex showed better antiaging performance, thermal stability and fluid resistance, when compared with those containing the commercial antioxidants (2,2,4-trimethyl-1,2-dihydroquinoline and N-isopropyl-N’-phenyl-p-phenylenediamine). These findings are in good agreement with our previous study on polar nitrile butadiene rubber.
Originality/value
The current study suggests the green biomass-derived Cu-LSF complex to be a promising low-cost and environmentally safe alternative filler and antioxidant to the hazardous commercial ones.
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Mattia Mele, Giampaolo Campana, Gregorio Pisaneschi, Luciano De Martino and Michele Ricciarelli
The purpose of this paper is to give an insight into relevant aspects of 3D printing of clay paste enhanced with scrap polymer powder which have not been investigated by previous…
Abstract
Purpose
The purpose of this paper is to give an insight into relevant aspects of 3D printing of clay paste enhanced with scrap polymer powder which have not been investigated by previous studies. Specifically, the geometrical features of the deposited lines, dimensional accuracy of benchmarks and mechanical properties of printed parts are investigated.
Design/methodology/approach
Firstly, the 3D printer is used to deposit lines of the paste under various combinations of material composition and process parameters. 3D scanning is used to measure their dimensional and geometrical errors. The results are elaborated through statistics to highlight the role of material and processing conditions. Then, four benchmark parts are printed using materials with different percentages of polymer powder. The parts are scanned after each step of the post-processing to quantify the effects of printing, drying and melting on dimensional accuracy. Finally, drop weight tests are carried out to investigate the impact resistance of specimens with different powder contents.
Findings
It is found that the quality of deposition varies with the printing speed, nozzle acceleration and material composition. Also, significant differences are observed at the ends of the lines. Materials with 10 Wt.% and 40 Wt.% of powder exhibit relevant shape variations due to the separation of phases. Accuracy analyses show significant deformations of parts at the green state due to material weight. This effect is more pronounced for higher powder contents. On the other hand, the polymer reduces shrinkage during drying. Furthermore, the impact test results showed that the polymer caused a large increase in impact resistance as compared to pure clay. Nonetheless, a decrease is observed for 40 Wt.% due to the higher amount of porosities.
Research limitations/implications
The results of this study advance the knowledge on the 3D printing of clay paste reinforced with a scrap polymer powder. This offers a new opportunity to reuse leftover powders from powder bed fusion processes. The findings presented here are expected to foster the adoption of this technique reducing the amount of waste powder disposed of by additive manufacturing companies.
Originality/value
This study offers some important insights into the relations between process conditions and the geometry of the deposited lines. This is of practical relevance to toolpath planning. The dimensional analyses allow for understanding the role of each post-processing step on the dimensional error. Also, the comparison with previous findings highlights the role of part dimensions. The present research explores, for the first time, the impact resistance of parts produced by this technology. The observed enhancement of this property with respect to pure clay may open new opportunities for the application of this manufacturing process.
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Daniel William Mackenzie Wright, David Jarratt and Emma Halford
The visitor economy of Forks now clearly relies upon a niche form of tourism – as fans of The Twilight Saga are drawn to the setting and filming location of the films. The purpose…
Abstract
Purpose
The visitor economy of Forks now clearly relies upon a niche form of tourism – as fans of The Twilight Saga are drawn to the setting and filming location of the films. The purpose of this study is to consider the process of diversification and subsequently present recommendations that could inform a future diversification strategy for Forks, in preparation for a post-film tourism scenario.
Design/methodology/approach
The research methods employed in this study have two interlinked but distinct elements. Firstly, the Twilight Effect in Forks (WA, USA) is considered as an illustrative case study to shed light on the issues facing a destination that has seen a tourism boom as a direct result of popular culture – The Twilight Saga Franchise. Secondly, a scenario thinking and planning approach is applied when considering the “long-view” future of tourism in Forks.
Findings
This article presents a post-film tourism future scenario for Forks; it suggests tourism diversification and a shift towards cultural heritage and wellness. Forks is well placed to afford such tourism experiences, as it offers unique cultural and natural characteristics; furthermore, these could be utilised to create and maintain a distinctive destination image. In doing so a more socially and environmentally sustainable industry can be established, one which supports the local community, including the Quileute tribe.
Originality/value
The article offers original discussions within the film-tourism literature with novel approaches to understanding the management and pre-planning opportunities for destinations that have become popular film tourism locations, with the application of a “Tourism Diversification Model”. The model is adapted from Ansoff Matrix and can be applied as a framework in future studies exploring destination diversification. The investigation of Forks as a post-film tourism case study alone is unique, and the discussions and findings presented are original.
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Kevin L. Papiorek and Martin R.W. Hiebl
Several conceptual works suggest that more digitalized information systems in management accounting have the potential to make this corporate function more effective. Against this…
Abstract
Purpose
Several conceptual works suggest that more digitalized information systems in management accounting have the potential to make this corporate function more effective. Against this backdrop, this study aims to investigate the impact of information systems quality in management accounting on the effectiveness of management control systems. Additionally, this study examines the moderating effect of process automation.
Design/methodology/approach
A cross-sectional survey of 125 German Mittelstand firms and hierarchical regression analyses were used for data collection and analysis.
Findings
The findings confirm the assumed positive effect of information systems quality in management accounting on management control effectiveness. They also confirm the assumed moderating effect of process automation. The authors find that the relationship between information systems quality in management accounting and management control effectiveness is more pronounced if the firm features a higher degree of process automation.
Originality/value
Several earlier case studies and a few quantitative studies indicated the potentially positive effect of high-quality information systems in management accounting on management control effectiveness. To the best of the authors‘ knowledge, this study is among the first to deliver quantitative proof of this relationship in the context of German Mittelstand firms. Moreover, the authors add to this literature the moderating effect of process automation in the relationship between information systems quality in management accounting and management control effectiveness.
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