Search results

1 – 10 of over 3000
Book part
Publication date: 10 December 2015

Dekar Urumsah

The concept and practice of e-services has become essential in business transactions. Yet there are still many organizations that have not developed e-services optimally…

Abstract

The concept and practice of e-services has become essential in business transactions. Yet there are still many organizations that have not developed e-services optimally. This is especially relevant in the context of Indonesian Airline companies. Therefore, many airline customers in Indonesia are still in doubt about it, or even do not use it. To fill this gap, this study attempts to develop a model for e-services adoption and empirically examines the factors influencing the airlines customers in Indonesia in using e-services offered by the Indonesian airline companies. Taking six Indonesian airline companies as a case example, the study investigated the antecedents of e-services usage of Indonesian airlines. This study further examined the impacts of motivation on customers in using e-services in the Indonesian context. Another important aim of this study was to investigate how ages, experiences and geographical areas moderate effects of e-services usage.

The study adopts a positivist research paradigm with a two-phase sequential mixed method design involving qualitative and quantitative approaches. An initial research model was first developed based on an extensive literature review, by combining acceptance and use of information technology theories, expectancy theory and the inter-organizational system motivation models. A qualitative field study via semi-structured interviews was then conducted to explore the present state among 15 respondents. The results of the interviews were analysed using content analysis yielding the final model of e-services usage. Eighteen antecedent factors hypotheses and three moderating factors hypotheses and 52-item questionnaire were developed. A focus group discussion of five respondents and a pilot study of 59 respondents resulted in final version of the questionnaire.

In the second phase, the main survey was conducted nationally to collect the research data among Indonesian airline customers who had already used Indonesian airline e-services. A total of 819 valid questionnaires were obtained. The data was then analysed using a partial least square (PLS) based structural equation modelling (SEM) technique to produce the contributions of links in the e-services model (22% of all the variances in e-services usage, 37.8% in intention to use, 46.6% in motivation, 39.2% in outcome expectancy, and 37.7% in effort expectancy). Meanwhile, path coefficients and t-values demonstrated various different influences of antecedent factors towards e-services usage. Additionally, a multi-group analysis based on PLS is employed with mixed results. In the final findings, 14 hypotheses were supported and 7 hypotheses were not supported.

The major findings of this study have confirmed that motivation has the strongest contribution in e-services usage. In addition, motivation affects e-services usage both directly and indirectly through intention-to-use. This study provides contributions to the existing knowledge of e-services models, and practical applications of IT usage. Most importantly, an understanding of antecedents of e-services adoption will provide guidelines for stakeholders in developing better e-services and strategies in order to promote and encourage more customers to use e-services. Finally, the accomplishment of this study can be expanded through possible adaptations in other industries and other geographical contexts.

Details

E-services Adoption: Processes by Firms in Developing Nations
Type: Book
ISBN: 978-1-78560-709-7

Keywords

Book part
Publication date: 9 August 2014

Abstract

Details

Intellectual Capital and Public Sector Performance
Type: Book
ISBN: 978-1-78350-169-4

Article
Publication date: 1 February 2003

Zhang Zhenmin, Sun Zhaowei and Yang Di

This article presents the optimized design, analysis and calculation concerning the trajectory of a lunar polar probe. Firstly, the trajectory design principles and…

Abstract

This article presents the optimized design, analysis and calculation concerning the trajectory of a lunar polar probe. Firstly, the trajectory design principles and constraints are determined. The preliminary design and analysis of the circumlunar orbit, transfer orbit to the moon and earth parking orbit are carried out separately and some computations for the flight trajectory concept have been made too. To reduce the fuel needed for error in orbital maneuver efficiently and satisfy the requirements on the launch window, some detailed design and analysis for the rather advanced phasing earth‐moon transfer orbit are given here and also the strategy for optimum orbit correction.

Details

Aircraft Engineering and Aerospace Technology, vol. 75 no. 1
Type: Research Article
ISSN: 0002-2667

Keywords

Article
Publication date: 1 June 2003

Pengji Wang and Di Yang

Spacecraft formation flying is a key technology for future astronautics. The relative dynamics of formation flying in eccentric orbits is studied, and the relative motion…

Abstract

Spacecraft formation flying is a key technology for future astronautics. The relative dynamics of formation flying in eccentric orbits is studied, and the relative motion between spacecrafts is analyzed in this paper. Based on the two‐body problem, the extension of Hill equations is achieved and used in relative dynamics of eccentric orbits. Moreover, the transformation of differential variables is applied, and the algebraic solution of the relative motion is obtained, which can be generally used for spacecraft formation flying in eccentric orbits. In addition, the analysis and numerical simulations are given for the relative motion of spacecraft formation flying. The results demonstrate that each spacecraft in eccentric orbits can run in a periodic motion surrounding the master spacecraft under some conditions. And multiple spacecraft can also set up some special formations according to missions.

Details

Aircraft Engineering and Aerospace Technology, vol. 75 no. 3
Type: Research Article
ISSN: 0002-2667

Keywords

Article
Publication date: 2 September 2019

Di Yang, Weiwei Qu and Yinglin Ke

The riveting process is a metal forming process involving complex elastic-plastic deformation, which will induce a compressive residual stress field and cause local…

Abstract

Purpose

The riveting process is a metal forming process involving complex elastic-plastic deformation, which will induce a compressive residual stress field and cause local distortions in the connecting areas. Regarding to the aircraft panel assemblies with plenty of rivets, the global deformation is inevitable and undesired, leading difficulties to downstream assembly processes. This paper aims to present a new method for the local distortion calculation and the global deformation prediction of sheet panel assemblies during the automated riveting process.

Design/methodology/approach

In this paper, a simplified algebraic study is presented to analyze the local distortion of single countersunk rivet joint with the consideration of the barrel-like shape of the driven head and the through-thickness variations along the rivet shank. Then, an equivalent rivet unit is proposed based on the result of the algebraic study and embedded into the global-level model for the prediction of the overall distortions of riveted panels.

Findings

The algebraic study is able to reach a more precise contour of the deformed rivet than the traditional assumption of cylindrical deformations and rapidly determine the equivalent coefficients of the riveting unit. The result also shows an industrial acceptable accuracy of the prediction for the global deformations of the double-layered panel assemblies widely used in the aircraft panel structures.

Originality/value

A new local-global method for predicting the deformations of the riveted panel assembly based on the algebraic study of the local distortions is proposed to help the engineers in the early design stages or in the assembly process planning stage.

Details

Assembly Automation, vol. 39 no. 5
Type: Research Article
ISSN: 0144-5154

Keywords

Article
Publication date: 5 September 2016

Di Yang, Weiwei Qu and Yinglin Ke

For the automatic drilling and riveting in panel assembly, gaps between the skin and strangers are inevitable and undesirable. At present, the determination of pre-joining…

Abstract

Purpose

For the automatic drilling and riveting in panel assembly, gaps between the skin and strangers are inevitable and undesirable. At present, the determination of pre-joining schemes relies on workers’ experience, introducing excessive number and inappropriate locations of pre-joining. This paper aims to present a new method for the evaluation of residual clearances after pre-joining and the pre-joining scheme optimization, providing operation guidance for the workers in panel assembly workshop.

Design/methodology/approach

In this paper, an equivalent gap assembly model for pre-joining is proposed on the basis of the mechanism of variation. This model retains the essential elastic behavior of the key features during the pre-joining operation and calculates the residual clearances in the view of the potential energy. Subsequently, this method is embedded into a Pareto optimality-based genetic algorithm, and the optimal pre-joining schemes are achieved with the consideration of the total residual clearances and the permissive tolerances.

Findings

The equivalent gap assembly model has the capability to predict an acceptable degree of accuracy of the residual clearances and achieve the optimized pre-joining schemes with less number of pre-joining at the same level of residual clearances.

Practical implications

The optimized pre-joining schemes are given in the form of Pareto optimality set, and workers can select suitable results according to their inclination to the quality and efficiency.

Originality/value

The paper is the first to propose the equivalent gap assembly model for the pre-joining operation, which provides for the simplification of the calculation of residual clearances based on the constrained variation principles.

Details

Assembly Automation, vol. 36 no. 4
Type: Research Article
ISSN: 0144-5154

Keywords

Article
Publication date: 26 September 2019

Di Yang and Zhiming Gao

A finite volume scheme for diffusion equations on non-rectangular meshes is proposed in [Deyuan Li, Hongshou Shui, Minjun Tang, J. Numer. Meth. Comput. Appl.…

Abstract

Purpose

A finite volume scheme for diffusion equations on non-rectangular meshes is proposed in [Deyuan Li, Hongshou Shui, Minjun Tang, J. Numer. Meth. Comput. Appl., 1(4)(1980)217–224 (in Chinese)], which is the so-called nine point scheme on structured quadrilateral meshes. The scheme has both cell-centered unknowns and vertex unknowns which are usually expressed as a linear weighted interpolation of the cell-centered unknowns. The critical factor to obtain the optimal accuracy for the scheme is the reconstruction of vertex unknowns. However, when the mesh deformation is severe or the diffusion tensor is discontinuous, the accuracy of the scheme is not satisfactory, and the author hope to improve this scheme.

Design/methodology/approach

The authors propose an explicit weighted vertex interpolation algorithm which allows arbitrary diffusion tensors and does not depend on the location of discontinuity. Both the derivation of the scheme and that of vertex reconstruction algorithm satisfy the linearity preserving criterion which requires that a discretization scheme should be exact on linear solutions. The vertex interpolation algorithm can be easily extended to 3 D case.

Findings

Numerical results show that it maintain optimal convergence rates for the solution and flux on 2 D and 3 D meshes in case that the diffusion tensor is taken to be anisotropic, at times heterogeneous, and/or discontinuous.

Originality/value

This paper proposes a linearity preserving and explicit weighted vertex interpolation algorithm for cell-centered finite volume approximations of diffusion equations on general grids. The proposed finite volume scheme with the new interpolation algorithm allows arbitrary continuous or discontinuous diffusion tensors; the final scheme is applicable to arbitrary polygonal grids, which may have concave cells or degenerate ones with hanging nodes. The final scheme has second-order convergence rate for the approximate solution and higher than first-order accuracy for the flux on 2 D and 3 D meshes. The explicit weighted interpolation algorithm is easy to implement in three dimensions in case that the diffusion tensor is continuous or discontinuous.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 30 no. 3
Type: Research Article
ISSN: 0961-5539

Keywords

Article
Publication date: 4 January 2016

Christopher Richardson, Md Salleh Yaapar and Sabrina Amir

– The purpose of this paper is to explore the role of budi, a concept incorporating moral values and intellect, in shaping the Malay workplace ethics and behaviour of the Malays.

1550

Abstract

Purpose

The purpose of this paper is to explore the role of budi, a concept incorporating moral values and intellect, in shaping the Malay workplace ethics and behaviour of the Malays.

Design/methodology/approach

This is a conceptual paper investigating how existing knowledge of budi and Malay cultural traditions manifests and affects contemporary workplace practices.

Findings

Although the origins of budi can be traced back to pre-Islamic Malay civilisation, its influence can still be found in contemporary workplace settings. For example, the hierarchical organisational structure and workplace etiquette that characterise Malay managerial practices are related to budi. At the same time, this paper also suggests that budi may potentially serve as a catalyst for certain less desirable work practices, including the greater importance attached to prioritising social relations over work performance.

Originality/value

In analysing budi, the paper explores a largely overlooked cultural concept within management literature. Although the Malay world is a rapidly growing centre of economic and business activity, relatively little scholarly attention has been devoted to exploring the cultural underpinnings and foundations that shape and influence Malay managerial and workplace practices among Malays.

Details

Journal of Asia Business Studies, vol. 10 no. 1
Type: Research Article
ISSN: 1558-7894

Keywords

Article
Publication date: 24 January 2020

Made Indra Wijaya, Abd Rahim Mohamad and Muhammad Hafizurrachman

The purpose of this paper is to assess the association between shift schedule realignment and patient safety culture.

Abstract

Purpose

The purpose of this paper is to assess the association between shift schedule realignment and patient safety culture.

Design/methodology/approach

Using difference in differences model, BIMC Hospitals and Siloam Hospital Bali were compared before and after shift schedule realignment to test the association between shift schedule realignment and patient safety culture.

Findings

Shift schedule realignment was associated with a significant improvement in staffing (coefficient 1.272; 95% CI 0.842 – 1.702; p<0.001), teamwork within units (coefficient 1.689; 95% CI 1.206 – 2.171; p<0.001), teamwork across units (coefficient 1.862; 95% CI 1.415 – 2.308; p<0.001), handoffs and transitions (coefficient 0.999; 95% CI 0.616 – 1.382; p<0.001), frequency of error reported (coefficient 1.037; 95% CI 0.581 – 1.493; p<0.001), feedback and communication about error (coefficient 1.412; 95% CI 0.982 – 1.841; p<0.001) and communication openness (coefficient 1.393; 95% CI 0.968 – 1.818; p<0.001).

Practical implications

With positive impact on patient safety culture, shift schedule realignment should be considered as quality improvement initiative. It stretches the compressed workload suffered by staff while maintaining 40 h per week in accordance with applicable laws and regulations.

Originality/value

Shift schedule realignment, designed to improve patient safety culture, has never been implemented in any Indonesian private hospital. Other hospital managers might also appreciate knowing about the shift schedule realignment to improve the patient safety culture.

Details

International Journal of Health Care Quality Assurance, vol. 33 no. 2
Type: Research Article
ISSN: 0952-6862

Keywords

Book part
Publication date: 9 June 2020

Anisah Firli and Dadan Rahadian

Several studies and research related to event study and terrorist bombing acts have different conclusions. Moreover, research on terrorist bombings worldwide has never…

Abstract

Several studies and research related to event study and terrorist bombing acts have different conclusions. Moreover, research on terrorist bombings worldwide has never been conducted. Hence, this research aims at examining the impact of terrorist bombing using the abnormal return variables by looking at all bombings around the world in the past 10 years. This research uses a paired t-test by looking at the abnormal return before, during, and after a bombing act. Results show no significant difference between the abnormal return before, during, and after bombing acts.

Details

Advanced Issues in the Economics of Emerging Markets
Type: Book
ISBN: 978-1-78973-578-9

Keywords

1 – 10 of over 3000