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Article
Publication date: 5 March 2018

Ling Zhou, Ling Bai, Wei Li, Weidong Shi and Chuan Wang

The purpose of this study is to validate the different turbulence models using in the numerical simulation of centrifugal pump diffuser. Computational fluid dynamics (CFD…

Abstract

Purpose

The purpose of this study is to validate the different turbulence models using in the numerical simulation of centrifugal pump diffuser. Computational fluid dynamics (CFD) has become the main method to study the pump inner flow patterns. It is important to understand the differences and features of the different turbulence models used in turbomachinery.

Design/methodology/approach

The velocity flow fields in a compact return diffuser under different flow conditions are studied and compared between CFD and particle image velocimetry (PIV) measurements. Three turbulence models are used to solve the steady flow field using high-quality fine structured grids, including shear stress transport (SST) k-w model, detached-eddy simulation (DES) model and SST k-w model with low-Re corrections.

Findings

SST k-w model with low-Re correction gives better results compared to DES and SST k-w model, and gives a good predication about the vortex core position under strong part-loading conditions.

Originality/value

A special test rig is designed to carry out the 2D PIV measurements under high rotating speed of 2850 r/min, and the PIV results are used to validate the CFD results.

Details

Engineering Computations, vol. 35 no. 1
Type: Research Article
ISSN: 0264-4401

Keywords

Content available
Article
Publication date: 6 August 2018

Weimin Wang and Ling Zhou

Abstract

Details

International Journal of Accounting & Information Management, vol. 26 no. 3
Type: Research Article
ISSN: 1834-7649

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Article
Publication date: 27 January 2020

Zelin Tong, Tingting Li, Wenting Feng, Yuanyuan Zhou and Ling Zhou

This study aims to investigate the impact of cross-border charitable activities on host- and home-country consumers based on the social identity theory.

Abstract

Purpose

This study aims to investigate the impact of cross-border charitable activities on host- and home-country consumers based on the social identity theory.

Design/methodology/approach

Through an extensive literature review and two experimental designs, this study establishes the research framework and hypothesises the relationships between the constructs.

Findings

National power moderates the impact of cross-border charitable activities on host- and home-country consumers. In particular, compared to countries with high national power, countries with low national power undertaking cross-border charitable activities will receive more positive reactions from the host-country consumers, and, conversely, more negative reactions from the home-country consumers.

Research limitations/implications

From the consumer perspective, this study finds that brand cross-border charitable activities have different influences on consumers in different countries because of an identity transformation mechanism that exists between the “insiders” and the “outsiders”, which is different from the assumptions of western theories.

Practical implications

The findings provide insights for undertaking brand cross-border charitable activities.

Originality/value

Previous studies, which are based on social identity categorisation, assume that cross-border charitable activities have a more positive impact on home-country consumers than host-country consumers. However, this study adopts the research paradigm of social identity relationisation and draws an opposite conclusion, which not only expands the theory of local intergroup interaction, but also clarifies how brand cross-border charitable activities influence Chinese consumers.

Details

Nankai Business Review International, vol. 11 no. 3
Type: Research Article
ISSN: 2040-8749

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Article
Publication date: 22 May 2020

Yingwei Liu, Tao Wang, Ling Zhou and Chunyan Nie

The essence of “Chinese element” has been pinpointed as the representation of national cultural archetype resource of China, which reflects to the overall power…

Abstract

Purpose

The essence of “Chinese element” has been pinpointed as the representation of national cultural archetype resource of China, which reflects to the overall power enhancement of China. Applying the Chinese national cultural archetype resource, which will be used for promoting the Chinese Brand internationalization, aims for the consumers' approval with the hope of integrating and spreading the unique cultural advantage of Chinese brand. The recognizing of Chinese brand's cultural archetype in this paper has constituted the basis of Chinese brand's cultural archetype strategy.

Design/methodology/approach

Based on the Grounded Theory, this paper has collected and analyzed the value symbols, character images and theme stories of Chinese narrative advertisements and constructed the cultural archetype framework of Chinese brands. This paper makes a comprehensive application of Charmaz's constructivist analysis and the main axis analysis and inspection method advocated by Strauss, with the aim of building a more objective and systematic theoretical framework for the Chinese brand cultural archetype.

Findings

In this framework, it revealed: (1) Chinese brand's cultural archetype can be divided into 12 concrete archetypes according to individual's relationship with self, the other, community and nature; (2) Consumers' different ways of self-categorization are attributed as the essential difference among various archetypes. This paper also compared and analyzed the differences between Chinese and Western cultural archetypes from three perspectives, formation of social structure, pedigree of myth and character's feature.

Originality/value

This paper has certain innovative significance to the theoretical construction of the archetype of Chinese brand culture. First, based on the cultural perspective, this paper applied the cultural psychological connotation of archetype to the brand research across culture, which is more conducive to the researchers' investigation of the cultural psychology of consumers in the cross-cultural context? Second, based on the identification and comparative study of Chinese brand culture archetype, it provides a new expansion and supplement for the research on brand internationalization and globalization in emerging countries.

Details

Journal of Contemporary Marketing Science, vol. 3 no. 1
Type: Research Article
ISSN: 2516-7480

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Article
Publication date: 4 December 2019

Yunling Song, Shihong Li and Ling Zhou

The purpose of this paper is to investigate the spillover effects of a bright-line disclosure regulation that required Chinese listed firms to provide earnings forecasts…

Abstract

Purpose

The purpose of this paper is to investigate the spillover effects of a bright-line disclosure regulation that required Chinese listed firms to provide earnings forecasts if they anticipated specified, large earnings changes.

Design/methodology/approach

The paper examines the discontinuity of the earnings change distribution of firms listed on the Shenzhen Stock Market between 2010 and 2014. The paper finds that firms no longer subject to the bright-line test still exhibited discontinuity in earnings change distribution. The discontinuity lasted for at least three years with magnitude comparable to that of the firms still subject to the bright-line test. In addition, newly listed firms that had never experienced the bright-line test showed similar tendency to avoid the same threshold. There is some evidence that these firms’ avoidance of the −50 per cent changes was partly because of market pressure.

Research limitations/implications

Research on bright-line tests has to date focused on their immediate and direct effects on firms currently subject to such tests. This study finds that a bright-line disclosure regulation’s influence is not limited to the firms directly governed by the regulation. It could lead to widespread and long lasting distortions in financial reporting behaviors of firms not currently subject to such tests.

Practical implications

The paper has implications for regulators who study the economic consequences of bright-line regulations in general and analysts of the Chinese capital market in particular.

Originality/value

This is the first empirical report that bright-line disclosure regulations affected the financial reporting behavior of firms that were not directly subject to the bright-line tests.

Details

International Journal of Accounting & Information Management, vol. 28 no. 1
Type: Research Article
ISSN: 1834-7649

Keywords

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Article
Publication date: 5 August 2019

Guojin Gong, Yue Li and Ling Zhou

It has been widely documented that investors and analysts underreact to information in past earnings changes, a fundamental performance indicator. The purpose of this…

Abstract

Purpose

It has been widely documented that investors and analysts underreact to information in past earnings changes, a fundamental performance indicator. The purpose of this paper is to examine whether managers’ voluntary disclosure efficiently incorporates information in past earnings changes, whether analysts recognize and fully anticipate the potential inefficiency in management forecasts and whether managers’ potential forecasting inefficiency entirely results from intentional disclosure strategies or at least partly reflects managers’ unintentional information processing biases.

Design/methodology/approach

Archival data were used to empirically test the relation between management earnings forecast errors and past earnings changes.

Findings

Results show that managers underreact to past earnings changes when projecting future earnings and analysts recognize, but fail to fully anticipate, the predictable bias associated with past earnings changes in management forecasts. Moreover, analysts appear to underreact more to past earnings changes when management forecasts exhibit greater underestimation of earnings change persistence. Further analyses suggest that the underestimation of earnings change persistence is at least partly attributable to managers’ unintentional information processing bias.

Originality/value

This study contributes to the voluntary disclosure literature by demonstrating the limitation in the informational value of management forecasts. The findings indicate that the effectiveness of voluntary disclosure in mitigating market mispricing is inherently limited by the inefficiency in management forecasts. This study can help market participants to better use management forecasts to form more accurate earnings expectations. Moreover, our evidence suggests a managerial information processing bias with respect to past earnings changes, which may affect managers' operational, investment or financing decisions.

Details

International Journal of Accounting & Information Management, vol. 27 no. 3
Type: Research Article
ISSN: 1834-7649

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Article
Publication date: 5 March 2018

Wei Li, Leilei Ji, Weidong Shi, Ling Zhou, Xiaoping Jiang and Yang Zhang

The purpose of this paper is to experimentally and numerically study the transient hydraulic impact and overall performance during startup accelerating process of mixed-flow pump.

Abstract

Purpose

The purpose of this paper is to experimentally and numerically study the transient hydraulic impact and overall performance during startup accelerating process of mixed-flow pump.

Design/methodology/approach

In this study, the impeller rotor vibration characteristics during the starting period under the action of fluid–structure interaction was investigated, which is based on the bidirectional synchronization cooperative solving method for the flow field and impeller structural response of the mixed-flow pump. Experimental transient external characteristic and the transient dimensionless head results were compared with the numerical calculation results, to validate the accuracy of numerical calculation method. Besides, the deformation and dynamic stress distribution of the blade under the stable rotating speed and accelerating condition were studied based on the bidirectional fluid–structure interaction.

Findings

The results show that the combined action of complex hydrodynamic environment and impeller centrifugal force in the startup accelerating process makes the deformation and dynamic stress of blade have the rising trend of reciprocating oscillation. At the end of acceleration, the stress and strain appear as transient peak values and the transient effect is nonignorable. The starting acceleration has a great impact on the deformation and dynamic stress of blade, and the maximum deformation near the rim of impeller outlet edge increases 5 per cent above the stable condition. The maximum stress value increases by about 68.7 per cent more than the steady-state condition at the impeller outlet edge near the hub. The quick change of rotating speed makes the vibration problem around the blade tip area more serious, and then it takes the excessive stress concentration and destruction at the blade root.

Originality/value

This study provides basis and reference for the safety operation of pumps during starting period

Details

Engineering Computations, vol. 35 no. 1
Type: Research Article
ISSN: 0264-4401

Keywords

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Book part
Publication date: 2 September 2009

Ling Yang and Xueguang Zhou

Interfirm contracts are a ubiquitous economic institution in market economies. In this study, we examine the determinants of one important aspect of interfirm contracts …

Abstract

Interfirm contracts are a ubiquitous economic institution in market economies. In this study, we examine the determinants of one important aspect of interfirm contracts – contract duration. We begin with Joskow's (1987) study that demonstrated that contract duration is governed by mechanisms that economize transaction costs. Our study extends Joskow's study in several ways: First, while Joskow's study focuses on one particular area of extreme resource dependence, between the coal mine and the power company, we examine patterns of contract duration and their determinants across broader economic sectors, thereby providing a more general test of the key ideas in transaction cost economics. Second, we investigate the role of social institutions as a distinct mechanism underlying the design of contract duration, especially in terms of mitigating risks and transaction costs. Finally, by situating our study in China, we extend the research context beyond industrialized market societies to a transitional economy where interfirm contracts are an emerging economic institution. The empirical study is based on the analyses of information on 877 contracts from 620 firms collected in two Chinese cities, Beijing and Guangzhou, in 2000.

Details

Work and Organizationsin China Afterthirty Years of Transition
Type: Book
ISBN: 978-1-84855-730-7

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Article
Publication date: 1 April 2001

Allan K.K. Chan and Yue‐Yuan Huang

Reports a study of 1,304 Chinese brand names of ten types of products in China. These brand names are content analyzed following a linguistic approach which the authors…

Abstract

Reports a study of 1,304 Chinese brand names of ten types of products in China. These brand names are content analyzed following a linguistic approach which the authors developed from their earlier studies. The ten types of brand names are presented in three broad categories representing the three different developing stages of the consumer product industry in China: brands of traditional products (illustrated by matches and spirits), brands of traditional products with current development (illustrated by bicycles, shoes, and toothpastes), and brands of new and modern products (illustrated by cosmetics, soft drinks, washing machines, refrigerators and TV sets). The conclusion drawn from the analysis is that one of the variables in determining how linguistic principles are being applied to Chinese brand naming is the respective stages of development of such products in the context of the Chinese market economy.

Details

Journal of Product & Brand Management, vol. 10 no. 2
Type: Research Article
ISSN: 1061-0421

Keywords

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Article
Publication date: 19 September 2016

Qianqian Zheng, Liangliang Chen, Luyao Lu and Xuesong Ye

Olfaction plays a very important role in daily life. The olfactory system has the ability to recognize, discriminate and identify thousands of odorant compounds with…

Abstract

Purpose

Olfaction plays a very important role in daily life. The olfactory system has the ability to recognize, discriminate and identify thousands of odorant compounds with extremely high sensitivity and specificity. The research on olfactory system has very important values in exploring the mechanisms of information processing in the other sensory nervous systems and brain. Recently, with the development of molecular biological and microelectronics technology research, the study of olfactory cell-based sensors has made great progress. The purpose of this paper is to provide details of recent developments in olfactory cell-based sensors.

Design/methodology/approach

Following an introduction, this paper first discusses some olfactory cell-based biosensors, which focus on the light-addressable potentiometric sensors and the microelectrode arrays. Second, surface modification, microfabrication and microfluidic technology which can improve the efficiency of cell immobilization will be summarized. The research trends of olfactory cell-based sensor in future will be proposed.

Findings

This paper shows that the biosensors’ performance is expected to be greatly improved due to the fast development of nanotechnology, optical technology and microelectronics. More and more emerging intelligent olfactory sensors will have a promising prospect in many application fields, including food quality and safety assessment, environmental monitor and human diseases detection.

Originality/value

This paper provides a detailed and timely review of the rapidly growing research in the olfactory cell-based sensors.

Details

Sensor Review, vol. 36 no. 4
Type: Research Article
ISSN: 0260-2288

Keywords

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