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Article
Publication date: 9 March 2010

Rui Lv, Linbo Qing, Yanmei Yu, Xiaohai He and Qiangyu Zeng

The first purpose of this paper is to propose a scalable video coding scheme providing flexibility in video transmission, especially under wireless environment. The second purpose…

Abstract

Purpose

The first purpose of this paper is to propose a scalable video coding scheme providing flexibility in video transmission, especially under wireless environment. The second purpose is to analyze the problem of lengthening the key frame interval in distributed video coding (DVC), and propose an approach to improve the rate‐distortion (RD) performance of DVC for long group‐of‐frames (GOF) size.

Design/methodology/approach

In the proposed scheme, a base layer is first obtained from an H.264 coder. When a DVC coder is then used to code the enhancement layer, information in processing the base layer is extracted and analyzed to make multiple side‐information available and reduce error accumulation for DVC coding, thus further improving the performance of the DVC coder.

Findings

By dividing video into base and enhancement layers, the combined video coding architecture enables a flexible video transmission. In addition, several methods are used to improve the RD performance in DVC coding. Simulation shows that the proposed scheme outperforms non‐scalable DVC for long GOF size.

Originality/value

Prediction from the decoding loop in base layer encoder largely reduces enhancement layer spatial redundancy. Multiple side‐information provides better estimation for DVC reconstruction. Long prediction loop is more reliable because error accumulation is effectively compensated.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 29 no. 2
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 9 March 2010

Qiangyu Zeng, Xiaohai He, Rui Lv and Wei Wu

The purpose of this paper is to introduce an efficient rate control algorithm for the H.264/AVC video coding in wireless communication. The adaptive rate control algorithm can…

Abstract

Purpose

The purpose of this paper is to introduce an efficient rate control algorithm for the H.264/AVC video coding in wireless communication. The adaptive rate control algorithm can reduce rate fluctuation, effectively prevent the skipping frame, and be suitable to the characteristics of wireless channel. The experimental result indicates that this plan can guarantee the quality of service of video transmission.

Design/methodology/approach

A motion complexity measure is developed to enhance the existing mean of absolute difference (MAD)‐based algorithm and is applied to bit allocation for rate control. Time and space relativities in frames are also used in the proposed rate control algorithm for MAD prediction. A quantitative parameter (QP) control scheme is used to adjust the computed QP based on actual encoding results of previous coded macroblocks (MBs) in a frame.

Findings

The proposed rate control algorithm always outperforms JM 8.6. The adaptive MAD model can reduce the prediction error. Both the subjective and objective reconstructed video qualities are improved, and the luminance PSNR is increased by up to 0.53 dB (or an average of around 0.37 dB).

Originality/value

The adaptive rate control algorithm based on motion complexity and MAD prediction with space and time relativities will be suitable for wireless communication applications.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 29 no. 2
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 5 December 2023

Yuting Lv, Yaojie Liu, Rui Wang, Hongyao Yu, Zhongnan Bi, Guohao Liu and Guangbao Sun

This paper aims to design a novel TiC/GTD222 nickel-based high-temperature alloy with excellent hot corrosion resistance by incorporating appropriate amounts of C, Al and Ti…

Abstract

Purpose

This paper aims to design a novel TiC/GTD222 nickel-based high-temperature alloy with excellent hot corrosion resistance by incorporating appropriate amounts of C, Al and Ti elements into GTD222 alloy.

Design/methodology/approach

The composite material was prepared using the selective laser melting (SLM) technology, followed by a hot isostatic pressing (HIP) treatment. Subsequently, the composite underwent a hot corrosion test in a 75% Na2SO4 + 25% NaCl mixed salt environment at 900 °C.

Findings

The HIP-SLMed TiC/GTD222 composite exhibits a relatively low weight loss rate. First, the addition of alloying elements facilitates the formation of multiple protective oxide films rich in Al, Ti and Cr. These oxide films play a crucial role in enhancing the material’s resistance to hot corrosion. Second, the HIP treatment results in a reduction of grain size in the composite and an increased number of grain boundaries, which further promote the formation of protective films.

Originality/value

The hot corrosion behavior of the TiC/GTD222 nickel-based composite material prepared through SLM and HIP processing has not been previously studied. This research provides a new approach for designing nickel-based superalloys with excellent hot corrosion resistance.

Details

Anti-Corrosion Methods and Materials, vol. 71 no. 1
Type: Research Article
ISSN: 0003-5599

Keywords

Article
Publication date: 9 August 2019

Chun-Jian Su, Yong Li, De-Xing Yang, Zhen-Hua Bai, Rui Wang, Yu-Ting Lv and Jian-Gao Duan

The purpose of this study is to solve the key problem of the residual stress of strip in buckling and deviation during the continuous annealing process (CAP).

Abstract

Purpose

The purpose of this study is to solve the key problem of the residual stress of strip in buckling and deviation during the continuous annealing process (CAP).

Design/methodology/approach

Considering the one-to-one correspondence between deformation and residual stress, the strip was divided into multiple elements. To obtain the total deformation of each element, the influence model of some factors on the deformation of steel strip element was established. Then, according to the constitutive equation of residual stress and deformation, and the deformation coordination relation between strip elements, a set of calculation model, which is suitable for residual stress of strip during CAP was established, the model precision was verified by finite element method simulation, and the influences on residual stress of strip were also analyzed.

Findings

The weighted calculation of comparison between analytical results and simulation shows that the accuracy of the analytical method is within 10 per cent, which fully meets the requirements.

Originality/value

The different residual stress of steel strip can be displayed quickly and intuitively in the synchronous process segment according to this model, which is of great importance to the prevention of strip buckling and deviation.

Details

Engineering Computations, vol. 37 no. 2
Type: Research Article
ISSN: 0264-4401

Keywords

Article
Publication date: 5 April 2024

Yuchen Wang and Rui Guo

Based on social cognitive theory, this study aims to explore the psychological mechanism behind consumer verification behavior following tourism e-commerce live-streaming.

Abstract

Purpose

Based on social cognitive theory, this study aims to explore the psychological mechanism behind consumer verification behavior following tourism e-commerce live-streaming.

Design/methodology/approach

Based on grounded theory, data were collected through 20 semi-structured in-depth interviews and analyzed.

Findings

This study identified that companies commonly use reminder messages and secondary promotions to facilitate the verification of tourism live-streaming products. Throughout this process, consumers undergo various psychologies related to verification. Specifically, they experience four positive verification psychologies: fear of missing out, anticipated emotions, status self-esteem and promotional perception. They also encounter two negative verification psychologies: psychological reactance and invasiveness. In addition, environmental factors such as the type of tourism live-streaming products and tourism destinations, along with individual trait factors like cognitive miserliness, tourism experience, autonomy, regulatory mode and impulsiveness, play significant roles in shaping verification behavior. These factors collectively influence the formation of verification behavior.

Originality/value

This study can provide recommendations for tourism companies to conduct marketing events following live-streaming. It is one of the earlier comprehensive studies discussing how to promote verification behavior following tourism e-commerce live-streaming. It helps to understand the psychological mechanism underlying the formation of verification behavior.

Book part
Publication date: 22 December 2016

Katiuscia Vaccarini, Francesca Spigarelli, Christoph Lattemann, Federico Salvatelli and Ernesto Tavoletti

Chinese foreign direct investments (FDI) to developed countries, such as Germany, seems to follow unique rules, which are different to traditional international business (IB…

Abstract

Purpose

Chinese foreign direct investments (FDI) to developed countries, such as Germany, seems to follow unique rules, which are different to traditional international business (IB) practices in terms of entry modes, speed of internationalization, and target countries. To shed light on these unique rules, we analyze motivation and location choices of FDI from China to Germany by describing a sample of five companies from the environmental industry.

Methodology/approach

A multiple case study research design is adopted. The study is based on five Chinese companies investing in Germany in the environmental industry through FDI (Greenfield Investment and Merger and Acquisition). Chinese managers were interviewed on the basis of semi-structured questionnaires.

Findings

According to the main findings from the interviews, when investing in Germany, managers take into account a series of factors. Chinese firms go global for traditional motives such as market-seeking purposes and with the aim of improving their production process through skills and know-how acquisition. Additional motives, such as labor cost and fiscal incentives are not considered relevant as factors for internationalizing. Entry mode choices are mainly driven by legal factors in the environmental industry.

Originality/value

The analysis is conducted at industry level with the aim to contextualize the results within the environmental sector. The case studies are focused on Chinese investments in Germany.

Details

China and Europe’s Partnership for a More Sustainable World
Type: Book
ISBN: 978-1-78635-331-3

Keywords

Article
Publication date: 12 November 2019

Claudio Petti, Francesca Spigarelli, Ping Lv and Mario Biggeri

The purpose of this paper is to analyze the internationalization of Chinese new global players through innovation-oriented Mergers and Acquisitions (M&As).

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Abstract

Purpose

The purpose of this paper is to analyze the internationalization of Chinese new global players through innovation-oriented Mergers and Acquisitions (M&As).

Design/methodology/approach

The paper combines the analysis of East-Asian and Chinese multinationals’ international expansion within international business (IB) and innovation domains, with the “latecomer” perspective. It is a conceptual contribution, based on the role of local institutions and firm’s absorptive capacity. A theoretical framework is developed, and further elucidated with two illustrative cases of Chinese M&As abroad in the automotive sector. Implications for theoretical development and practical application are then drawn.

Findings

Chinese firms’ M&As abroad have become one of the preferential modes of developing innovation capabilities. The success of these endeavors is argued to be the result of a combination of a strong push from government industrial policies, along with significant internal knowledge assimilation and transformation capabilities.

Originality/value

The paper extends IB literature integrating the latecomer firms’ perspective within a novel conceptual framework, which adds to the traditional resource-based arguments about incumbent MNEs asset and knowledge-seeking internationalization modes, as well as institutional and multi-dimensional absorptive capacity perspectives.

Details

International Journal of Emerging Markets, vol. 16 no. 2
Type: Research Article
ISSN: 1746-8809

Keywords

Book part
Publication date: 13 December 2017

Qiongwei Ye and Baojun Ma

Internet + and Electronic Business in China is a comprehensive resource that provides insight and analysis into E-commerce in China and how it has revolutionized and continues to…

Abstract

Internet + and Electronic Business in China is a comprehensive resource that provides insight and analysis into E-commerce in China and how it has revolutionized and continues to revolutionize business and society. Split into four distinct sections, the book first lays out the theoretical foundations and fundamental concepts of E-Business before moving on to look at internet+ innovation models and their applications in different industries such as agriculture, finance and commerce. The book then provides a comprehensive analysis of E-business platforms and their applications in China before finishing with four comprehensive case studies of major E-business projects, providing readers with successful examples of implementing E-Business entrepreneurship projects.

Internet + and Electronic Business in China is a comprehensive resource that provides insights and analysis into how E-commerce has revolutionized and continues to revolutionize business and society in China.

Details

Internet+ and Electronic Business in China: Innovation and Applications
Type: Book
ISBN: 978-1-78743-115-7

Article
Publication date: 18 July 2016

Ping Lv and Francesca Spigarelli

The purpose of this paper is to analyze the role of institutional distance and host country attractiveness in location determinants of Chinese Foreign investments in EU in the…

1931

Abstract

Purpose

The purpose of this paper is to analyze the role of institutional distance and host country attractiveness in location determinants of Chinese Foreign investments in EU in the renewable energy sector, taking into account bilateral political and economic relations.

Design/methodology/approach

A firm-level Ministry of Commerce (MofCom) database of greenfield and non-greenfield Chinese investments abroad is used. A six fixed-effects logit analysis is performed.

Findings

Chinese firms tend to invest in EU countries with reduced rule of law; market affluence is an attraction factor for them, but they do not seem to be human capital asset-seekers. Countries with politically stable environment are most attractive to sales/services subsidiaries; while countries with good control of corruption, low trade barriers and encouraging foreign ownership are most attractive to manufacturing subsidiaries. A large market is the most attractive factor for R & D subsidiaries, and a rich market is the most attractive factor for manufacturing subsidiaries. Manufacturing subsidiaries are more technological asset-seekers. R & D subsidiaries are the most non-human capital asset-seekers.

Research limitations/implications

The study extends the state of the art of the literature by developing a theoretical framework, grounded on the influence of host country institutional factors and on endowment of resources on the location choice of Chinese investors. Further variables should be included in the future (industrial specialization of host country, cultural distance, bilateral ties).

Practical implications

Policy implications are relevant. They are related both to outward foreign direct investment attraction policies and to Europe-China cooperation dialogue. With reference to attraction policies, as Chinese green firms are technological asset-seekers, more than human capital asset-seekers, EU countries interested in partnering with Chinese investors should develop specific measures targeting encouraging technology spillover. Even R & D subsidiaries should be tempted with technology-oriented measures. With reference to Europe-China cooperation, the paper findings support suggestions for a more active European position on foreign investments in key European energy sectors.

Originality/value

The paper is grounded on an improved theoretical model, tested through a unique Mofcom firm-level database. Originality lies in the fact that the authors provide a sectoral insight. The need for sectoral analysis is fundamental as Chinese industrial development and internationalization path vary extensively across industry, due to policy interventions, supportive measures and prioritized initiatives. Zhang et al. (2011, p. 229) found that – specifically – the energy sector is highly sensitive to host country institutional context, therefore Chinese foreign direct investment are more likely to be exposed to regulatory and competitive pressure compared to other industries.

Details

International Journal of Emerging Markets, vol. 11 no. 3
Type: Research Article
ISSN: 1746-8809

Keywords

Article
Publication date: 3 April 2017

Rui Sousa and Giovani J.C. da Silveira

The purpose of this paper is to theoretically articulate and empirically test an integrated model of capability antecedents and performance outcomes of servitization strategies…

3510

Abstract

Purpose

The purpose of this paper is to theoretically articulate and empirically test an integrated model of capability antecedents and performance outcomes of servitization strategies. The authors characterize servitization strategies based on the offering of two types of services: basic services (BAS) and advanced services (ADS).

Design/methodology/approach

Hypotheses are tested based on statistical analyses of a large survey of manufacturers from different countries and sectors.

Findings

The authors find that manufacturing capabilities associate with the provision of BAS, while service capabilities associate with both BAS and ADS; BAS do not impact financial performance, but support the offering of ADS; there seem to be naturally occurring servitization trajectories involving the gradual development of balanced levels of BAS and ADS and adequate levels of manufacturing and service capabilities.

Research limitations/implications

The findings on servitization trajectories are based on the observation of manufacturing business units at different stages of servitization (cross-sectional data).

Practical implications

Manufacturers wishing to servitize should distinguish between BAS and ADS and deploy a balanced adoption of BAS and ADS, using BAS as a platform. This should be accompanied with the building of appropriate capabilities.

Originality/value

This is one of the first studies to show an explicit link between different servitization strategies, capabilities, and servitization maturity. It provides new insights into the servitization paradox and servitization trajectories.

Details

International Journal of Operations & Production Management, vol. 37 no. 4
Type: Research Article
ISSN: 0144-3577

Keywords

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