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11 – 20 of over 1000Abstract
Purpose
Nowadays, automotive engines are controlled by electronic control units (ECUs), and the engine idle speed performance is significantly affected by the setup of control parameters in the ECU. The engine ECU tune‐up is done empirically through tests on a dynamometer (dyno). In this way, a lot of time, fuel and human resources are consumed, while the optimal control parameters may not be obtained. The purpose of this paper is to propose a novel ECU setup optimization approach for engine idle speed control.
Design/methodology/approach
In the first phase of the approach, Latin hypercube sampling (LHS) and a multi‐input/output least squares support vector machine (LS‐SVM) is proposed to build up an engine idle speed model based on dyno test data, and then a genetic algorithm (GA) is applied to obtain optimal ECU setting automatically subject to various user‐defined constraints.
Findings
The study shows that the predicted results using the estimated model from LS‐SVM are in good agreement with the actual test results. Moreover, the optimization results show a significant improvement on idle speed performance in a test engine.
Practical implications
As the methodology is generic it can be applied to different vehicle control optimization problems.
Originality/value
The research is the first attempt to integrate a couple of paradigms (LHS, multi‐input/output LS‐SVM and GA) into a general framework for constrained multivariable optimization problems under insufficient system information. The proposed multi‐input/output LS‐SVM for modelling of multi‐input/output systems is original, because the traditional LS‐SVM modelling approach is suitable for multi‐input, but single output systems. Finally, this is the first use of the novel integrated framework for automotive engine idle‐speed control optimization.
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The purpose of this paper is to explain how Edith Cowan University (ECU) Library improved the accessibility of their web site, aiming for Web Content Accessibility Guidelines…
Abstract
Purpose
The purpose of this paper is to explain how Edith Cowan University (ECU) Library improved the accessibility of their web site, aiming for Web Content Accessibility Guidelines (WCAG) version 2.0 Level AA. It describes the results obtained.
Design/methodology/approach
Initial testing by consultants was conducted in October 2012. The web site was defined as all webpages which appear part of the library web site, including supplier webpages, plus pages from the university web site and library web site. Library staff applied the recommendations to pages which they could edit, and discussed the recommendations with suppliers to improve their product ' s accessibility. The web site was re-tested in June 2013.
Findings
ECU Library web site failed WCAG 2.0 Level A standard in the initial testing and re-testing. Many individual pages which failed initially passed the re-test. The smallest improvement was seen in suppliers’ web sites.
Practical implications
This paper could help libraries to improve web site accessibility, as it covers negotiating with suppliers to upgrade their web sites, plus upgrading editable webpages. It shows initial and re-test results, allowing libraries to compare their results to those of ECU. Legislation and guidelines state web sites should be accessible to all users and organisations providing non-accessible web sites risk being sued.
Social implications
A web site not complying with WCAG version 2.0 would be very difficult for people with disabilities to access. Upgrading ECU Library ' s web site will provide all users with more equal access to the resources.
Originality/value
This study describes problems in upgrading academic library webpages and related supplier web sites and organisation web site to improve accessibility for people with disabilities.
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Wee Kwan Albert Tan and Balan Sundarakani
The purpose of this study is to develop a framework for a freight consolidation company to adopt blockchain for the shipping community. Our research critically examine the…
Abstract
Purpose
The purpose of this study is to develop a framework for a freight consolidation company to adopt blockchain for the shipping community. Our research critically examine the challenges faced by a global shipping company that offer freight consolidation businesses and explore the use of Blockchain technology to enhance the competitiveness and sustainability of freight booking operations.
Design/methodology/approach
This paper is a case study, ECU Worldwide, with focus on transforming their operations using blockchain technology for the freight booking industry. As the case is explorative in nature, the research aim to unearth the complex blockchain adoption phenomenon in the industry as the technology is very nascent at present. The research is primarily grounded on Technology Acceptance Model (TAM) theory.
Findings
The research finds that blockchain technology supports solving many issues and inefficiencies of global shipping operations but there are some barriers that they need to overcome. The research provides a framework and recommendations for global company to consider when considering Blockchain technology for implementation. Our research finding shows that smart contracts can be set up at critical points along with the shipment route namely the storage, customs, carrier, transporters and consignee stage to ensure greater security and transparency.
Research limitations/implications
The research provides recommendations to key stakeholders involved in freight forwarding segment of logistics industry while adopting blockchain technology. Apart from the methodological limitation of the research, the research is limited to Singapore in terms of geographical coverage.
Practical implications
The drivers and barriers identified in the study can give practitioners insight of using blockchain for the industry. The proposed framework can assist companies in the shipping industry to prepare themselves to adopt blockchain for the community.
Originality/value
This case study is the first of its kind to examine the use of blockchain to explore the adoption in logistics Industry in Singapore and perhaps worldwide.
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This paper traces the history of Dowty Electronics' involvement in B.I.T.E. over the last ten years; it describes the techniques used, successes and failures, and customer…
Abstract
This paper traces the history of Dowty Electronics' involvement in B.I.T.E. over the last ten years; it describes the techniques used, successes and failures, and customer reactions. Applications include the full authority engine control for the Olympus 593 in Concorde, the high integrity wing flaps controller for the BAe 146 shorthaul jet, the engine spool speed limiter for the RB‐211–524 in the Boeing 747, and the high integrity engine bleed valve controller for the RB‐211–535 in the Boeing 757 aircraft.
Reviews previous research on the effects of CEO compensation structure, outlines the criteria for relative performance evaluation (RPE) and notes the paucity of empirical evidence…
Abstract
Reviews previous research on the effects of CEO compensation structure, outlines the criteria for relative performance evaluation (RPE) and notes the paucity of empirical evidence to support it. Reports a study of the use of RPE for US bank CEO compensation 1976‐1988; and its relationship to shareholder, market and industry returns. Explains the methodology and presents the results, which suggest that CEO pay is positively linked to firm performance, but negatively linked to market/industry performance; and that performance is positively linked to CEO option wealth. Adds that both the pay/performance link and the use of RPE increased after bank deregulation in the early 1980s. Considers consistency with other research and concludes that the reduction in compensation risk offered by RPE should reduce compensation cost and thus provide a good reason for the banking industry to increase its use.
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Marilyn F. Johnson and Ram Natarajan
We hypothesize that a CEO’s responsiveness to security analysts’ demands for information about the firm is influenced by the structure of the CEO’s compensation package. Our…
Abstract
We hypothesize that a CEO’s responsiveness to security analysts’ demands for information about the firm is influenced by the structure of the CEO’s compensation package. Our analysis is based on a sample of 469 CEO presentations to security analyst societies by 149 firms during the period 1984‐1988. Consistent with the argu ments of Nagar (1999; 1998) that CEO shareholdings and golden parachutes reduce the cost to the CEO of disclosing proprietary information, we find that CEO share holdings and the presence of golden parachutes are positively associated with the total amount of information that a CEO discloses at an analyst society presentation. Consistent with the argument that CEOs whose cash compensation is sensitive to firm performance have incentives to release bad news so as to lower expectations about future performance and, hence, bonus targets, CEO cash compensation performance sensitivities are positively associated with the CEO’s willingness to disclose bad news.
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Grace Wibowo and Brian H. Kleiner
This article deals with what a Chief Executive Officer (CEO) actually does in the company. The purpose is to describe CEOs, illustrate the CEOs’ duties, and provide a conclusion…
Abstract
This article deals with what a Chief Executive Officer (CEO) actually does in the company. The purpose is to describe CEOs, illustrate the CEOs’ duties, and provide a conclusion. This article was made by gathering information from books and articles about CEOs and their duties. The scope of this article is demonstrated in three sections. First, this article gives a description about CEOs in terms of definition and who can be classified as CEOs, nature of the work in terms of a CEOs’ responsibilities, working conditions in terms of at the office, at work, and the job’s consequences categories, employment, qualifications and advancement, job outlook, and earnings in terms of a CEOs’ annual earnings and compensation. Second, this article explains the duties of CEOs. There are four duties a CEO has: setting strategy and vision, building culture, building good teamwork, and allocating capital. This article also provides the measurement for CEOs’ duties so the CEO can measure his or her performance on each duty in order to do his or her job better in the future. Finally, the conclusion is made based on the explanation in the previous major subjects: the description and the duties of a CEO.
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Kurt Azevedo and Daniel B. Olsen
The purpose of this paper is to determine whether the altitude at which construction equipment operates affects or contributes to increased engine wear.
Abstract
Purpose
The purpose of this paper is to determine whether the altitude at which construction equipment operates affects or contributes to increased engine wear.
Design/methodology/approach
The study includes the evaluation of two John Deere PowerTech Plus 6,068 Tier 3 diesel engines, the utilization of OSA3 oil analysis laboratory equipment to analyze oil samples, the employment of standard sampling scope and methods, and the analysis of key Engine Control Unit (ECU) data points (machine utilization, Diagnostic Trouble Codes (DTCs) and engine sensor data).
Findings
At 250 h of engine oil use, the engine operating at 3,657 meters above sea level (MASL) had considerably more wear than the engine operating at 416 MASL. The leading and earliest indicator of engine wear was a high level of iron particles in the engine oil, reaching abnormal levels at 218 h. The following engine oil contaminants were more prevalent in the engine operating at the higher altitude: potassium, glycol, water and soot. Furthermore, the engine operating at higher altitude also presented abnormal and critical levels of oil viscosity, Total Base Number and oxidation. When comparing the oil sample analysis with the engine ECU data, it was determined that engine idling is a contributor for soot accumulation in the engine operating at the higher altitude. The most prevalent DTCs were water in fuel, extreme low coolant levels and extreme high exhaust manifold temperature. The ECU operating data demonstrated that the higher altitude environment caused the engine to miss-fire and rail pressure was irregular.
Practical implications
Many of the mining operations and construction projects are accomplished at mid to high altitudes. This research provides a comparison of how construction equipment engines are affected by this type of environment (i.e. higher altitudes, cooler temperatures and lower atmospheric pressure). Consequently, service engineers can implement maintenance strategies to minimize internal engine wear for equipment operating at higher altitudes.
Originality/value
The main contribution of this paper will help construction equipment end-users, maintenance engineers and manufacturers to implement mitigation strategies to improve engine durability for countries with operating conditions similar to those described in this research.
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Roman Bartnik and Youngwon Park
Technologies change quickly in the automotive industry. This can provide opportunities to firms from emerging economies who try to enter the world stage of automotive production…
Abstract
Purpose
Technologies change quickly in the automotive industry. This can provide opportunities to firms from emerging economies who try to enter the world stage of automotive production, provided they can react to this more nimbly than established competitors. How technological change affects the supply chain coordination of incumbents from developed economies and new entrants from emerging economies should strongly determine the speed of competitive reaction. By using the example of automotive transmission development, the purpose of this paper is to provide a conceptual model for the analysis and offer research propositions.
Design/methodology/approach
The authors build a conceptual model based on information processing theory and offer research propositions based on case study evidence of four automotive original equipment manufacturers (OEMs) and five suppliers.
Findings
The authors find symptoms of two larger trends: increasing specialization and technological linkages and a need to increase external supply chain integration beyond traditional structures. Comparing the effects on Japanese and German incumbents, the authors find that increasing external supply chain linkages proves to be harder for Japanese OEMs. Tight links and routines in the Japanese supply chain networks may harm OEM efficiency under the new technological conditions, e.g. the lack of complete part specifications and high demands for customization. Looking at effects on emerging market firms, Chinese OEMs use quasi-open modular production settings in transmission development and lean strongly on inputs from specialized foreign tier-one suppliers. Speed advantages must be weighed against long-term disadvantages of dependence and insufficient R&D investments.
Research limitations/implications
The study explores how technological change affects inter-firm development processes. The authors propose a framework and hypotheses based on information processing theory and link the findings to the discussion on the impact of national institutional context on supply chain coordination.
Practical implications
OEMs wanting to adapt complex existing internal structures to the changing demands for information processing should focus first on improving internal capacities by improving the amount and richness of information flow. Implementing new standards for simultaneous and standardized software development across the supply chain is a key point for this. A second step should be to boost the internal capacity to process higher richness of information, i.e. to understand the meta-knowledge necessary to integrate across technological areas in the development of electronic control units (ECUs).
Originality/value
The authors draw on original interview data in developed and emerging markets and information processing theory to explore the complexity of inter-firm coordination in automotive supply chains.
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Şule Taşlı Pektaş, N. Şule Aybar, N. Yaprak Savut and Hunt McKinnon
The success of the efforts for green building depends largely on integrating such approaches with building design education. However, most of the existing studies on green…
Abstract
The success of the efforts for green building depends largely on integrating such approaches with building design education. However, most of the existing studies on green building have focused on the technical issues, while its socio-cultural and educational aspects have been less examined. In order to alleviate the problem, this paper presents an international workshop that explores how green building design can be taught in a global teamwork project using a green building assessment system, Leadership in Energy and Environmental Design (LEED) checklist as a framework and examples of vernacular architecture as precedents. The results of an empirical survey reveals a gap between students' general learning about green building in a developing and a developed country and suggests that a collaborative project experience may facilitate bridging the gap and exchanging technical and cultural information related to sustainability.
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