Search results

1 – 10 of 569
Article
Publication date: 6 August 2019

Lidan Yao, Lixin Wang, Haining Yang, Chuan Li, Hui Song and Xianguo Hu

This paper aims to investigate the influence of stearate types on the thickening ability, dropping point and fiber structure of greases.

Abstract

Purpose

This paper aims to investigate the influence of stearate types on the thickening ability, dropping point and fiber structure of greases.

Design/methodology/approach

Several greases were prepared from polyolefins and various stearates. The melting point of the stearates and the dropping point of the resultant greases were measured, and the intermolecular binding energies of the thickener and the radial distribution function of the metal–oxygen in the thickener were determined with the aid of molecular simulation. The microstructures of the greases were also analyzed via scanning electron microscopy.

Findings

A higher stearate binding energy was found to correlate to a higher dropping point of the resultant greases. The thickening ability of the stearate is related to the group and period of the constituent metal ion. Within a group, greater atomic numbers of the metal were correlated to lower thickening ability. In a period, as the atomic number of the metal increased, the thickening ability was enhanced. The radial distribution functions of metal and oxygen can explain the aggregation of the stearate thickeners in the grease.

Originality/value

This work compared the thickening capacity of several stearates. Guidelines for preparing stearates to tailor the resultant grease are presented.

Details

Industrial Lubrication and Tribology, vol. 71 no. 9
Type: Research Article
ISSN: 0036-8792

Keywords

Article
Publication date: 2 August 2021

Tengjiang Yu, Haitao Zhang, Junfeng Sun, Yabo Wang, Shuang Huang and Dan Chen

Using typical structure of asphalt pavement in Harbin area of China, and the formula of generalized friction coefficient between base and surface layers of asphalt pavement in…

Abstract

Purpose

Using typical structure of asphalt pavement in Harbin area of China, and the formula of generalized friction coefficient between base and surface layers of asphalt pavement in cold area is established.

Design/methodology/approach

Through structural characteristics analysis of asphalt pavement in cold area, the generalized formula of friction coefficient between base and surface layers of asphalt pavement in cold area is derived. The formula can quickly calculate the friction coefficient between layers of asphalt pavement.

Findings

Based on quantitative analysis to the contacting state between layers of asphalt pavement in cold area, the relationships between generalized friction coefficient and resilient modulus of asphalt mixtures, temperature shrinkage coefficient and temperature have been established.

Originality/value

The findings can enrich the description methods about the contacting state between layers of asphalt pavement, and have a certain theoretical and practical value. Through the application of the formula of generalized friction coefficient between layers, it can provide a technical basis for the asphalt pavement design, construction and maintenance in cold area.

Details

Journal of Engineering, Design and Technology , vol. 21 no. 1
Type: Research Article
ISSN: 1726-0531

Keywords

Article
Publication date: 1 July 1998

Yongli Li, JiHiu Zhang and Chuan Li

In this paper, we further study the topological properties of sets in information systems, investigate the point of accumulation, connected set and connectivity of sets in…

Abstract

In this paper, we further study the topological properties of sets in information systems, investigate the point of accumulation, connected set and connectivity of sets in information systems and property of function.

Details

Kybernetes, vol. 27 no. 5
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 1 July 1997

YongLi Li, Ji Hui Zhang, Chuan Li and Xuemou Wu

Develops in a concrete way the thought of pansystems philosophy about the so‐called five‐mutual ideas of pansystems (5‐DSPP), and investigates certain real interconnections of the…

106

Abstract

Develops in a concrete way the thought of pansystems philosophy about the so‐called five‐mutual ideas of pansystems (5‐DSPP), and investigates certain real interconnections of the borderline of information systems and related topological boundary.

Details

Kybernetes, vol. 26 no. 5
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 1 January 1996

Peter Zhou

This paper is a study of the current trends and conditions of electronic resources for Chinese studies, based on a recent survey on the Internet of 29 Chinese libraries in North…

Abstract

This paper is a study of the current trends and conditions of electronic resources for Chinese studies, based on a recent survey on the Internet of 29 Chinese libraries in North America and eight Chinese libraries in China, Taiwan and Hong Kong. The survey discussed current electronic resources for Chinese studies, with a union list of major Chinese language databases currently used in libraries in Asia and the US. Current views on the use and development of electronic resources for Chinese studies were summarised.

Details

The Electronic Library, vol. 14 no. 1
Type: Research Article
ISSN: 0264-0473

Book part
Publication date: 25 August 2014

Wen-Chuan Chang, Li-Hui Chang and Shih-Shuo Yeh

Literature reveals that a positive store environment is likely to be a driver to enhance buying experiences and stimulate customers purchase decision. This study further…

Abstract

Literature reveals that a positive store environment is likely to be a driver to enhance buying experiences and stimulate customers purchase decision. This study further investigates the perception of restaurant environment. A field survey is conducted in the Chiayi City, Taiwan by collecting 398 usable samples. The questionnaire is based on past studies of store environment attributes, therefore, considers ambient, design, and social factors. The study finds that a high correlation exists between ambient factor and design factor. It suggests that they could be viewed as a conjunctive dimension. Furthermore, one result indicates that primary and secondary emotions create different levels of impact on planned behaviors.

Details

Advances in Hospitality and Leisure
Type: Book
ISBN: 978-1-78190-746-7

Keywords

Article
Publication date: 7 January 2014

Ming-Chang Huang, Ghi-Feng Yen and Tzu-Chuan Liu

Effective and efficient supply chain coordination requires the integration of all product flow processes. However, inconsistent empirical results have been obtained with respect…

10503

Abstract

Purpose

Effective and efficient supply chain coordination requires the integration of all product flow processes. However, inconsistent empirical results have been obtained with respect to the relationships between supply chain integration (SCI) and performance. Drawing on efficiency-flexibility arguments, this paper seeks to develop a SCI model that includes buyer-supplier-supplier relationships, and proposes a contingency framework for reexamining the SCI-supplier performance relationship under demand and technological uncertainties.

Design/methodology/approach

A two-stage data collection process was conducted, and a total of 878 suppliers that listed in the Taiwanese “Center-Satellite Production System” with supply contract were contacted for this study. Finally 164 suppliers were gathered and screened as valid responses. Hierarchical regression analysis was used to test the hypotheses in this study.

Findings

Evidence indicates that SCI has a significant positive effect on the suppliers' performance. The positive SCI-performance relationship can be moderately weakened by demand uncertainty; however, this positive SCI-performance relationship will be strengthened by technological uncertainty.

Originality/value

While supply chain management is needed to manage the vertical and horizontal relationships simultaneously, this study offers a framework to solve efficiency-flexibility dilemma arguments when dealing with “exploitation” and “exploration” alternatives to help to reexamine the inconsistent SCI-performance relationship. Furthermore, based on transaction cost theory, this paper takes the nature of uncertainty into account for improving the theoretical background of the SCI-performance relationship arguments. Empirical results indicate the existence of an ambidextrous supply chain integration strategy which justifies the choice of which one is preferable in efficiency-flexibility dilemma arguments.

Details

Supply Chain Management: An International Journal, vol. 19 no. 1
Type: Research Article
ISSN: 1359-8546

Keywords

Book part
Publication date: 14 December 2023

Adetayo Olaniyi Adeniran, Ikpechukwu Njoku and Mobolaji Stephen Stephens

This study examined the factors influencing willingness-to-repurchase for each class of airline service, and integrate the constructs of service quality, satisfaction and…

Abstract

This study examined the factors influencing willingness-to-repurchase for each class of airline service, and integrate the constructs of service quality, satisfaction and willingness-to-repurchase which were rooted on Engel-Kollat-Blackwell (EKB) model. The study focuses on the domestic and international arrival of passengers at Murtala Muhammed International Airport in Lagos and Nnamdi Azikwe International Airport in Abuja. Information was gathered from domestic and foreign passengers who had post-purchase experience and had used the airline's services more than once. The survey data were obtained concurrently from arrival passengers at two major international airports using an electronic questionnaire through random and purposive sampling techniques. The data was analysed using the ordinal logit model and structural equation model. From the 606 respondents, 524 responses were received but 489 responses were valid for data analysis and reporting and were obtained mostly from economy and business class passengers. The study found that the quality of seat pitch, allowance of 30 kg luggage permission, availability of online check-in 24 hours before the departing flight, quality of space for legroom between seats, and the quality of seats that can be converted into a fully flatbed are the major service factors influencing willingness-to-repurchase economy and business class tickets. Also, it was found that passengers' willingness to repurchase is influenced majorly by service quality, but not necessarily influenced by satisfaction. These results reflect the passengers' consciousness of COVID-19 because the study was conducted during the heat of COVID-19 pandemic. Recommendations were suggested for airline management based on each class.

Details

Innovation, Social Responsibility and Sustainability
Type: Book
ISBN: 978-1-83797-462-7

Keywords

Article
Publication date: 13 February 2009

Lan Yi, Wenhui You, Chuan Li and Xuemou Wu

The purpose of this paper is to state the pansystems ecology, management and related principles and methods of knowledge rediscovery. Related contents include: generalized life…

Abstract

Purpose

The purpose of this paper is to state the pansystems ecology, management and related principles and methods of knowledge rediscovery. Related contents include: generalized life, vitality, resource, circulation, environs, periodicity, phenology, eco‐niche in pansystems space, evolution, intelligence development, philosophy of science, epistemology, psychology, pedagogy and teaching.

Design/methodology/approach

The paper is an application of pansystems principles to approach an ecology‐styled world outlook and methodology, related topics include: pansystems rediscovery to ecology and the world; generalized relativity, resource, environs, ecology, circulation, life; pansystems models on evolution, eco‐niche, pyramid law, recap law, phenology, management and knowledge rediscovery.

Findings

All of the logoi concerned with are reduced to the actualization of pansystems variational principle and related OR‐concretion. The pansystems ecology presents a new outlook to world, society, management, methodology, pedagogy and knowledge rediscovery.

Originality/value

Provides the framework and concretion principles of pansystems research on generalized resource, circulation, environs, ecology and related applications. They lead to some new comprehension of evolution, psychology, epistemology, society, management.

Details

Kybernetes, vol. 38 no. 1/2
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 1 February 2016

Hong Qiao, Chuan Li, Peijie Yin, Wei Wu and Zhi-Yong Liu

Human movement system is a Multi-DOF, redundant, complex and nonlinear system formed by coordinating combination of neural system, bones, muscles and joints, which is robust and…

Abstract

Purpose

Human movement system is a Multi-DOF, redundant, complex and nonlinear system formed by coordinating combination of neural system, bones, muscles and joints, which is robust and has fast response and learning ability. Imitating human movement system can improve robustness, fast response and learning ability of the robots.

Design/methodology/approach

In this paper, we propose a new motion model based on the human motion pathway, especially the information propagation mechanism between the cerebellum and spinal cord.

Findings

The proposed motion model proves to have fast response and learning ability through experiments, which matches the features of human motion.

Originality/value

The proposed model in this paper introduces the habitual theory in kinesiology and neuroscience into robot control, and improves robustness, fast response and learning ability of the robots. This paper proves that introduction of neuroscience has an important guiding significance for precise and adaptive robot control, such as assembly automation.

Details

Assembly Automation, vol. 36 no. 1
Type: Research Article
ISSN: 0144-5154

Keywords

1 – 10 of 569