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Article
Publication date: 11 October 2021

Qingguo Wen, Pengju Li, Zhengkai Zhang and Hong Hu

This paper aims to clarify the principle of force measurement using the auxetic structure by studying the relationship among the force, the change of transmittance and the change…

Abstract

Purpose

This paper aims to clarify the principle of force measurement using the auxetic structure by studying the relationship among the force, the change of transmittance and the change of output current of the solar cell.

Design/methodology/approach

This paper opted for an exploratory study using combining theory with experiment. This paper analysized the theoretical model and deformation of the auxetic structure. It used a hexagon honeycomb structure as a comparison in the experiment. The experiment was conducted on a universal testing machine, and the data was obtained by a digital acquisition card. The data was analyzed without using any signal processing means.

Findings

This paper provides the linearity and the sensitivity of the proposed force measurement method. It shows a good linear relationship between the input and output of this method and good sensitivity, stability and repeatability without using any signal processing means.

Originality/value

This paper provides new structural insights for force sensors and presents future research directions.

Details

Sensor Review, vol. 42 no. 1
Type: Research Article
ISSN: 0260-2288

Keywords

Article
Publication date: 9 April 2018

Bin Shi, Jian Hua Guo, Xing An Cao, En Zhu Hu and Kun Hong Hu

This paper aims to explore the effects of mineral diesel fuel carbon soot (MCS) and biodiesel carbon soot (BCS) on the lubrication of polyalphaolefin (PAO) and diesel fuels.

Abstract

Purpose

This paper aims to explore the effects of mineral diesel fuel carbon soot (MCS) and biodiesel carbon soot (BCS) on the lubrication of polyalphaolefin (PAO) and diesel fuels.

Design/methodology/approach

Two styles of carbon soot were prepared from the natural combustion of mineral diesel fuel oil (MDO) and biodiesel oil (BDO). Tribological tests were conducted on a high-frequency reciprocating rig. Friction surfaces were characterized using three-dimensional laser scanning confocal microscopy and Raman spectroscopy.

Findings

The addition of MCS and BCS to PAO could reduce friction in most cases. MCS had a negligible effect on the wear for contents not exceeding 1.0 per cent. By contrast, BCS exhibited a considerable negative influence on the wear resistance even at low contents. For diesel fuels, MCS reduced both friction and wear, whereas BCS substantially deteriorated the lubrication of BDO. MCS formed a Fe3O4/C composite lubricating film on the friction surface. BCS also entered the contact region, but it did not form an effective Fe3O4/C composite lubricating film.

Originality/value

This work compared MDO and BDO from a different perspective, i.e. the effects of their combustion carbon soot on the lubrication of lubricating oil and fuel oil. The significant negative effect of BCS on the lubrication of lubricating oil and BDO is a problem that could occur in the industrial application of BDO.

Details

Industrial Lubrication and Tribology, vol. 70 no. 3
Type: Research Article
ISSN: 0036-8792

Keywords

Article
Publication date: 16 January 2024

Hong Hu, Liying Chen and Yuxiang Zheng

This study aimed to explore the effects of the satisfaction of employees' need for autonomy, relatedness and competence on their voice behavior through the mediation of…

Abstract

Purpose

This study aimed to explore the effects of the satisfaction of employees' need for autonomy, relatedness and competence on their voice behavior through the mediation of self-efficacy for voice and perceived risk for voice.

Design/methodology/approach

The theoretical model is tested using survey data collected from 209 employees of information technology (IT) firms located in five major cities in China.

Findings

The study found that satisfaction of employees' need for autonomy, relatedness and competence facilitated their self-efficacy for voice and inhibited perceived risk for voice. Self-efficacy for voice was positively related to voice, whereas perceived risk for voice was negatively related to it. Perceived risk for voice hampered self-efficacy for voice.

Practical implications

The findings indicate that organizations can boost employees' voice behavior by making them feel that they have autonomy in their work, by helping them maintain good relationships with others in the workplace and by enabling their competence in accomplishing their job.

Originality/value

This study highlights that satisfying employees' psychological needs plays a pivotal role in facilitating their voice behavior. The authors provide new insights into the relationship between need satisfaction and voice behavior and into the mediating roles of self-efficacy for voice and perceived risk for voice.

Details

Journal of Managerial Psychology, vol. 39 no. 1
Type: Research Article
ISSN: 0268-3946

Keywords

Article
Publication date: 30 November 2018

Hong Hu, Qiang Wang and Jixiang Chen

Why do some small and medium-sized enterprises (SMEs) explore more while others exploit further? What are the driving forces of their exploratory and exploitative innovation…

Abstract

Purpose

Why do some small and medium-sized enterprises (SMEs) explore more while others exploit further? What are the driving forces of their exploratory and exploitative innovation? These are intriguing questions worthy of in-depth research. The purpose of this paper is to crack these problems from both objective (i.e. organizational slack) and subjective (i.e. market orientation) perspectives. Specifically, the paper examines the effects of unabsorbed and absorbed slack on exploratory and exploitative innovation and the mediating roles played by proactive and responsive market orientation.

Design/methodology/approach

The authors collected data from 214 SMEs in several industries of China. These businesses were located in the city of Shanghai and the provinces of Jiangsu and Zhejiang in the southeastern part of China. The survey method was used to test the hypotheses.

Findings

Results reveal that unabsorbed and absorbed slack could affect exploratory and exploitative innovation. Proactive and responsive market orientation are related to unabsorbed and absorbed slack, exploratory and exploitative innovation, and they play the roles of mediators in two sets of the relationships.

Research limitations/implications

This research presents several profound insights for venture capitalists regarding to making investment decisions and for the entrepreneurs of SMEs in terms of how much resource slack they should gain and retain to reach intended level of exploratory and exploitative innovation. Some of the limitations of this study relate to the single respondent in each firm, lack of examination on relevant contextual factors and potential moderators.

Originality/value

This study addresses the gaps in the literature by exploring the mechanisms underlying the effects of different kinds of organizational slack on the two elements of ambidextrous innovation in non-large-scale businesses in a non-Western cultural setting.

Details

Chinese Management Studies, vol. 13 no. 2
Type: Research Article
ISSN: 1750-614X

Keywords

Open Access
Article
Publication date: 8 June 2021

Shihan Meng, Wenxiang Dong, Hong Hu and Yuejiang Li

The purpose of this paper is to analyze the supply chain's resilience in crowd networks from both static and dynamic perspectives.

971

Abstract

Purpose

The purpose of this paper is to analyze the supply chain's resilience in crowd networks from both static and dynamic perspectives.

Design/methodology/approach

This paper first defines the supply chain’s resilience, then proposes a graphical and game-theoretic framework to evaluate the resilience.

Findings

In this framework, an equilibrium with high resilience will be achieved after the iterated prisoner's dilemma in the supply chain. The two-stage update mechanism contributes to higher profits, higher stability and stronger risk resistance capability. The reputation-based tit-for-tat strategy in the second stage helps to realize society cooperation.

Originality/value

This work pays more attention to the dynamic evolution of interactions between organizations in the supply chain. It provides an important theoretical basis for future work such as how to effectively control and guide the evolution of events in the intelligence network and how to stand sudden changes and avoid collapse.

Details

International Journal of Crowd Science, vol. 5 no. 2
Type: Research Article
ISSN: 2398-7294

Keywords

Article
Publication date: 1 February 2001

K.C. LAM, TIESONG HU, S.O. CHEUNG, R.K.K. YUEN and Z.M. DENG

Modelling of the multiproject cash flow decisions in a contracting firm facilitates optimal resource utilization, financial planning, profit forecasting and enables the inclusion…

297

Abstract

Modelling of the multiproject cash flow decisions in a contracting firm facilitates optimal resource utilization, financial planning, profit forecasting and enables the inclusion of cash‐flow liquidity in forecasting. However, a great challenge for contracting firm to manage his multiproject cash flow when large and multiple construction projects are involved (manipulate large amount of resources, e.g. labour, plant, material, cost, etc.). In such cases, the complexity of the problem, hence the constraints involved, renders most existing regular optimization techniques computationally intractable within reasonable time frames. This limit inhibits the ability of contracting firms to complete construction projects at maximum efficiency through efficient utilization of resources among projects. Recently, artificial neural networks have demonstrated its strength in solving many optimization problems efficiently. In this regard a novel recurrent‐neural‐network model that integrates multi‐objective linear programming and neural network (MOLPNN) techniques has been developed. The model was applied to a relatively large contracting company running 10 projects concurrently in Hong Kong. The case study verified the feasibility and applicability of the MOLPNN to the defined problem. A comparison undertaken of two optimal schedules (i.e. risk‐avoiding scheme A and risk‐seeking scheme B) of cash flow based on the decision maker's preference is described in this paper.

Details

Engineering, Construction and Architectural Management, vol. 8 no. 2
Type: Research Article
ISSN: 0969-9988

Keywords

Article
Publication date: 1 March 2000

K.C. LAM, S. THOMAS NG, TIESONG HU, MARTIN SKITMORE and S.O. CHEUNG

The selection criteria for contractor pre‐qualification are characterized by the co‐existence of both quantitative and qualitative data. The qualitative data is non‐linear…

Abstract

The selection criteria for contractor pre‐qualification are characterized by the co‐existence of both quantitative and qualitative data. The qualitative data is non‐linear, uncertain and imprecise. An ideal decision support system for contractor pre‐qualification should have the ability of handling both quantitative and qualitative data, and of mapping the complicated non‐linear relationship of the selection criteria, such that rational and consistent decisions can be made. In this research paper, an artificial neural network model was developed to assist public clients identifying suitable contractors for tendering. The pre‐qualification criteria (variables) were identified for the model. One hundred and twelve real pre‐qualification cases were collected from civil engineering projects in Hong Kong, and 88 hypothetical pre‐qualification cases were also generated according to the ‘If‐then’ rules used by professionals in the pre‐qualification process. The results of the analysis totally comply with current practice (public developers in Hong Kong). Each pre‐qualification case consisted of input ratings for candidate contractors' attributes and their corresponding pre‐qualification decisions. The training of the neural network model was accomplished by using the developed program, in which a conjugate gradient descent algorithm was incorporated for improving the learning performance of the network. Cross‐validation was applied to estimate the generalization errors based on the ‘re‐sampling’ of training pairs. The case studies show that the artificial neural network model is suitable for mapping the complicated non‐linear relationship between contractors' attributes and their corresponding pre‐qualification (disqualification) decisions. The artificial neural network model can be concluded as an ideal alternative for performing the contractor pre‐qualification task.

Details

Engineering, Construction and Architectural Management, vol. 7 no. 3
Type: Research Article
ISSN: 0969-9988

Keywords

Article
Publication date: 1 February 2011

Songmin Shang, Enling Hu, Patrick Poon, Shouxiang Jiang, Chi Wai Kan and Rena Koo

In this study, the foam dyeing technology was applied to dye cotton knitted fabric for achieving the surface-dyed result. The T-shirt made by this surface-dyed fabric could easily…

Abstract

In this study, the foam dyeing technology was applied to dye cotton knitted fabric for achieving the surface-dyed result. The T-shirt made by this surface-dyed fabric could easily obtain the wash-out effect after garment laundering. The pigment dyeing performances in foam dyeing were system studied. Colour strength, colourfastness and serviceability of fabrics dyed with the methods of foam-padding and liquid-padding were evaluated and compared. Results show that surface dyeing for cotton-knitted fabric with foam media could overcome the shortcoming of poor penetration in foam dyeing method, and turn the poor penetration into the superiority for obtaining the surface-dyed result. The serviceability such as water absorption and handle property was also well improved in foam dyeing method. Finally, the advantages of energy saving and reducing chemical usage were implemented throughout the dyeing process.

Details

Research Journal of Textile and Apparel, vol. 15 no. 1
Type: Research Article
ISSN: 1560-6074

Keywords

Article
Publication date: 13 April 2015

Steven Hung Chung Fun

Civic education in Hong Kong is quite confusing nowadays. To understand the policy, it should be placed into the reality of its historical context. In addition, to read through…

Abstract

Purpose

Civic education in Hong Kong is quite confusing nowadays. To understand the policy, it should be placed into the reality of its historical context. In addition, to read through the documentary presentation of policy, the policy’s proposal and its initiation should be understood with an understanding of contextual progress and historical change following the handover of sovereignty to China. The paper aims to discuss these issues.

Design/methodology/approach

The genealogical knowledge of policy history is applied for the purpose of understanding civic education. The concepts of genealogy put forward present an anti-essentialist position and are opposed to focusing on a singular or dominant ideology.

Findings

As the government-dominated power, any knowledge of civic education was bound to be nationally identified and patriotic for the purposes of strengthening nation-state awareness. Another approach of moral education was adopted that emphasized traditional Chinese cultures and values in order to cultivate a recognition of a harmonious society in students.

Originality/value

The paper helps to analyse the government-dominated process of knowledge formation in a value setting.

Details

Asian Education and Development Studies, vol. 4 no. 2
Type: Research Article
ISSN: 2046-3162

Keywords

Open Access
Article
Publication date: 13 July 2018

Alice Y.C. Te and Gerard A. Postiglione

Studying abroad is not new for Hong Kong students, especially those from the middle class. For a variety of reasons, traversing to Mainland universities has been an unconventional…

3336

Abstract

Purpose

Studying abroad is not new for Hong Kong students, especially those from the middle class. For a variety of reasons, traversing to Mainland universities has been an unconventional path confined mostly to students who pursued specific programs, or had family or social ties. Beginning in 2012, an admission scheme was launched for Hong Kong students applying to Mainland universities. The purpose of this paper is to review the admission scheme.

Design/methodology/approach

This paper draws on both quantitative and qualitative data sources. It includes statistics from official records of students’ application and enrollment figures, and documents obtained from multiple sources, as well as qualitative data through interviews of Hong Kong students who are studying in the Mainland universities.

Findings

The key findings are that since the implementation of the admission scheme, the number of applicants is rather stable irrespective of the changing socio-economic and political context. With the preferential treatment for Hong Kong students, low tuition fees, government financial assistance and scholarships, most students still consider studying in the Mainland a backup plan rather than a first choice. The academic performance of the students and academic/career aspirations have influenced their choice and decisions.

Originality/value

This paper contributes through providing both primary and secondary data to help understand the level of acceptance on the scheme since its implementation. It also reveals the perceptions of the students who have made their choice to study cross the border. In facing the emergent economic, socio-cultural and political challenges, some policies recommendations are proposed to boost the acceptance of the scheme. Moreover, it fills the research gap on student mobility from Hong Kong to Mainland China in the corpus of literature.

Details

Public Administration and Policy, vol. 21 no. 1
Type: Research Article
ISSN: 1727-2645

Keywords

1 – 10 of over 8000