Search results

1 – 6 of 6
To view the access options for this content please click here
Article
Publication date: 19 June 2019

Shujing Zhang, Manyu Zhang, Yujie Cui, Xingyue Liu, Bo He and Jiaxing Chen

This paper aims to propose a fast machine compression scheme, which can solve the problem of low-bandwidth transmission for underwater images.

Abstract

Purpose

This paper aims to propose a fast machine compression scheme, which can solve the problem of low-bandwidth transmission for underwater images.

Design/methodology/approach

This fast machine compression scheme mainly consists of three stages. Firstly, raw images are fed into the image pre-processing module, which is specially designed for underwater color images. Secondly, a divide-and-conquer (D&C) image compression framework is developed to divide the problem of image compression into a manageable size. And extreme learning machine (ELM) is introduced to substitute for principal component analysis (PCA), which is a traditional transform-based lossy compression algorithm. The execution time of ELM is very short, thus the authors can compress the images at a much faster speed. Finally, underwater color images can be recovered from the compressed images.

Findings

Experiment results show that the proposed scheme can not only compress the images at a much faster speed but also maintain the acceptable perceptual quality of reconstructed images.

Originality/value

This paper proposes a fast machine compression scheme, which combines the traditional PCA compression algorithm with the ELM algorithm. Moreover, a pre-processing module and a D&C image compression framework are specially designed for underwater images.

Details

Sensor Review, vol. 39 no. 4
Type: Research Article
ISSN: 0260-2288

Keywords

To view the access options for this content please click here
Article
Publication date: 8 July 2019

Yujie Fan, Feng Xue, Yuankai Zhou, Yibin Dai, Pengfei Cui, Yu Su and Zhiqiang Liu

As a key basic component used in machining, high-speed steel (HSS) tools often prone to wear and failure during machining. Therefore, the purpose of this study is to adopt…

Abstract

Purpose

As a key basic component used in machining, high-speed steel (HSS) tools often prone to wear and failure during machining. Therefore, the purpose of this study is to adopt a suitable approach to improve the stability of the cutting force, the service life and the wear resistance.

Design/methodology/approach

Laser shock processing (LSP) was used to process the tool rake face and the tribological test was performed with ball-on-disk wear tester.

Findings

Experimental results show that cutting force of the LSP-treated tool is lower than untreated tool under the same cutting conditions. Wear rate of the tool nose treated by LSP decreases obviously and the tool life increases by 40 per cent.

Originality/value

HSS is often used in the manufacture of complex cutting tools. The main value of this article is to improve the tool surface wear resistance, thereby extending the service life of cutter. This paper is valuable not only in theory but also with reference value in engineering practice.

Details

Industrial Lubrication and Tribology, vol. 72 no. 6
Type: Research Article
ISSN: 0036-8792

Keywords

To view the access options for this content please click here
Article
Publication date: 1 January 2013

Yujie Wei, Zhiyuan Li, James Burton and Joel Haynes

As a relationship‐oriented culture, customer‐firm relationship plays an important role in consumer decision making process in China. Moreover, there are significant…

Abstract

Purpose

As a relationship‐oriented culture, customer‐firm relationship plays an important role in consumer decision making process in China. Moreover, there are significant regional differences of Chinese consumers in terms of relationship proneness and its impact on relationship marketing outcomes. The purpose of this paper is to examine the differences of relationship proneness and its effect on relational satisfaction, relationship commitment and benefits between consumers from north and south of mainland China.

Design/methodology/approach

Based on previous research and relationship marketing theories, a series of hypotheses were developed comparing the two populations on relationship‐related variables. Data were collected from two cities of China using survey method.

Findings

Regional differences exist between the two groups of Chinese consumers in relationship proneness, commitment, trust, and relationship benefits perceptions. Gender differences also exist. Relationship proneness interacts with region resulting in moderating effects on relationship marketing outcomes.

Research limitations/implications

This research has treated two groups of Chinese consumers as cohorts and individual differences are not taken into consideration. The sample includes only graduate students whose attitudes toward relationship marketing may deviate from average consumers of the country as they have higher education levels but lower income levels.

Practical implications

The findings of the research provide managerial implications for marketing segmentation in China. International and domestic marketers should consider using different marketing strategies on consumers from different regions of China.

Originality/value

The paper confirms the regional differences of Chinese consumers in relationship proneness, trust, relationship benefits and commitment. The paper contributes to the relationship marketing literature by relating consumer relationship proneness to relationship benefits, and confirming the moderating effect of relationship proneness on relationship benefits and relationship commitment.

Details

Management Research Review, vol. 36 no. 1
Type: Research Article
ISSN: 2040-8269

Keywords

To view the access options for this content please click here
Article
Publication date: 22 September 2021

Yujie Zhu

The purpose of this paper is to examine the construction of national heritage through the interpretation of sites and events, with a particular focus on hot interpretation…

Abstract

Purpose

The purpose of this paper is to examine the construction of national heritage through the interpretation of sites and events, with a particular focus on hot interpretation at difficult heritage sites. 

Design/methodology/approach

This paper examines the processes of difficult heritage interpretation at the Memorial Hall of the Nanjing Massacre over the past 30 years, and examines the resulting political implications.

Findings

Aligning with contemporary national social and political agendas, heritage interpretation at the Memorial Hall actively serves as an authorised educational tool. Despite the hot interpretation techniques used to stimulate the emotional impact of visitor experiences, this particular traumatic past has been utilised in nation building practices that legitimise specific histories and form a national image on an international stage.

Research limitations/implications

Heritage interpretation of difficult history will benefit from open dialogue and assessment of the past from multiple perspectives. This requires all stakeholders to work together to develop interpretation strategies that acknowledge and prioritise the needs of post-conflict societies. Without this form of open dialogue and reflection, the official claims of heritage interpretation achieving reconciliation between conflicted peoples remain superficial. 

Originality/value

This study offers a novel contribution to the discussion of heritage interpretation. The results shed light on the cultural processes surrounding state interpretation of traumatic pasts for specific political uses. The study suggests ways in which heritage sectors and authorities can achieve social goals, such as public education, reconciliation and peacebuilding, through such processes of heritage interpretation.

Details

Journal of Cultural Heritage Management and Sustainable Development, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2044-1266

Keywords

To view the access options for this content please click here
Article
Publication date: 29 October 2020

Jiansheng Qu, Jinyu Han, Lina Liu, Li Xu, Hengji Li and Yujie Fan

The purpose of this paper is to explore the heterogeneity and correlations of agricultural greenhouse gas (GHG) emissions among provinces in China, and then policy…

Abstract

Purpose

The purpose of this paper is to explore the heterogeneity and correlations of agricultural greenhouse gas (GHG) emissions among provinces in China, and then policy implications are proposed.

Design/methodology/approach

After agricultural GHG accounting and a pre-analysis of inter-provincial heterogeneity, improved gravity model and the Social Network Analysis (SNA) methods are introduced to construct the network, being carried out from three aspects of the whole network, individual provincial characteristics and cluster analysis.

Findings

(1) There are significant regional variations in agricultural GHG scale among provinces owing to the layout of agricultural production, and the temporal trends show that the direction and speed of agricultural GHG scale change vary among provinces; (2) In terms of inter-provincial correlations, there exists a complex spatial network of agricultural GHG among provinces, which tends to be more complex, intensive and stable, while the status of the provinces in the network also has gradually become more balanced. All provinces played their respective roles in the four clusters of the network with agricultural layout and comparative advantages, and the distribution has continuously optimized.

Practical implications

The inter-provincial network characteristics of agricultural GHG emissions and its evolution have practical implications for differentiated and coordinated agricultural GHG reduction policies at the provincial levels.

Originality/value

This paper innovatively study inter-provincial agricultural GHG correlations in China with the SNA methods used to study economic and social connections in the past. There is some originality in the introduction of network theory and application of the SNA methods, which can provide some reference for researches in similar fields.

Details

China Agricultural Economic Review, vol. 13 no. 1
Type: Research Article
ISSN: 1756-137X

Keywords

To view the access options for this content please click here
Article
Publication date: 16 October 2018

Na Zhang, Yu Yang, Jiafu Su and Yujie Zheng

Because of the multiple design elements and complicated relationship among design elements of complex products design, it is tough for designers to systematically and…

Abstract

Purpose

Because of the multiple design elements and complicated relationship among design elements of complex products design, it is tough for designers to systematically and dynamically express and manage the complex products design process.

Design/methodology/approach

To solve these problems, a supernetwork model of complex products design is constructed and analyzed in this paper. First, the design elements (customer demands, design agents, product structures, design tasks and design resources) are identified and analyzed, then the sub-network of design elements are built. Based on this, a supernetwork model of complex products design is constructed with the analysis of the relationship among sub-networks. Second, some typical and physical characteristics (robustness, vulnerability, degree and betweenness) of the supernetwork were calculated to analyze the performance of supernetwork and the features of complex product design process.

Findings

The design process of a wind turbine is studied as a case to illustrate the approach in this paper. The supernetwork can provide more information about collaborative design process of wind turbine than traditional models. Moreover, it can help managers and designers to manage the collaborative design process and improve collaborative design efficiency of wind turbine.

Originality/value

The authors find a new method (complex network or supernetwork) to describe and analyze complex mechanical product design.

Details

Kybernetes, vol. 48 no. 5
Type: Research Article
ISSN: 0368-492X

Keywords

1 – 6 of 6