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Article
Publication date: 21 October 2019

Kangkang Wang, MengQian Wang, Weiwei Lv, Jiming Yao, Wei Zhang and Xiaoyan Li

An indirect electrochemical reduction and dyeing with indigo were carried out here to solve problems of low dye reduction rate and poor dyeing depth in the current electrochemical…

139

Abstract

Purpose

An indirect electrochemical reduction and dyeing with indigo were carried out here to solve problems of low dye reduction rate and poor dyeing depth in the current electrochemical dyeing process.

Design/methodology/approach

Response surface analysis tests were performed to evaluate the effects of ferrous sulfate concentration, medium concentration, sodium hydroxide concentration and reduction time on the reduction efficiency of indirect electrochemical reduction of indigo.

Findings

The conditions obtained by design-expert optimization showed that the concentration of FeSO4·7H2O has the most significant effect on the reduction performance of dye liquor. Under the optimized electrochemical reduction dyeing process, the rate of dye reduction could be reached 91.21 per cent and the K/S value of indirect electrochemical dyeing of indigo can be achieved to 12.96, which is increased by about 9.56 per cent compared with that of Na2S2O4 dyeing with the same color fastness basically.

Research limitations/implications

The recyclability and biodegradability of the dye remain to be explored.

Practical implications

The strategy presented here can be developed to replace a substantial part of electrochemical dyeing with optimized product quality and reduced environmental pollution in denim production.

Social implications

The strategy presented here can be developed to replace a substantial part of electrochemical dyeing with optimized product quality and reduced environmental pollution in denim production.

Originality/value

Application of the Fe(II)-DGS-Abal B complex media system in the indirect electrochemical reduction of indigo.

Details

Pigment & Resin Technology, vol. 49 no. 2
Type: Research Article
ISSN: 0369-9420

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Article
Publication date: 20 May 2020

Weiwei Lv, Zhijie Huangfu, Kangkang Wang, Wei Zhang and Jiming Yao

Indirect electrochemical oxidation and electro-flocculation were combined to degrade indigo wastewater.

230

Abstract

Purpose

Indirect electrochemical oxidation and electro-flocculation were combined to degrade indigo wastewater.

Design/methodology/approach

The degradation efficiency of indigo wastewater in single-cell and double-cell were investigated. Based on the previous single factor experiments, the oxidative degradation conditions of indigo wastewater in single cell were optimized by response surface methodology (RSM). The decolorization rate, chemical oxygen demand (COD) removal rate, the contents of flocculation precipitation and indigo were measured and analyzed.

Findings

The degradation efficiency in single cell was higher than in double cell. The electrolysis conditions were optimized by RSM and the decolorization rate was 99.01% with COD removal rate of 60.34% and conductivity of 89.75 mS/cm. The amount of flocculated precipitation decreased by 53.33% and the indigo increased by 86.34%. The content of Na and S decreased by 12.13 and 6.49%, respectively. The ratio of Fe3+ to Fe2+ in the solution was 4.62:1, indicating that most of the iron dropped on the electrode sheet was converted to Fe3+.

Research limitations/implications

The one-step electrochemical oxidation and flocculation method with the advantages of simple operation and environmental protection, provided a reference for the actual treatment of dyeing wastewater.

Practical implications

Combining the electrochemical flocculation and oxidation provided an efficient and practical solution for degradation of indigo wastewater.

Originality/value

Combining the advantages of electrochemical oxidation and electroflocculation, the application of electrochemistry in printing and dyeing wastewater treatment technology has been expanded.

Details

Pigment & Resin Technology, vol. 50 no. 1
Type: Research Article
ISSN: 0369-9420

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Article
Publication date: 12 February 2018

Kangkang Yu, Ben Nanfeng Luo, Xue Feng and Jianing Liu

Supply chain flexibility is crucial for firms to respond to uncertain circumstances caused by environmental factors, such as the diversity of customer demands, problems of product…

2921

Abstract

Purpose

Supply chain flexibility is crucial for firms to respond to uncertain circumstances caused by environmental factors, such as the diversity of customer demands, problems of product safety, and adjustments of industrial policies. To investigate the approach to enhance supply chain flexibility, the purpose of this paper is to propose that both internal and external information integration contribute to reactive and proactive supply chain flexibilities, which elicit high operational performance.

Design/methodology/approach

Using a sample of 84 food companies that have been listed three years in China and content analysis based on their annual reports, evidence was collected to test the hypotheses through hierarchical regressions.

Findings

The results reveal that external information integration results in both reactive and proactive flexibilities, which further improve operational performance. Internal information integration positively affects both reactive and proactive flexibilities, but its mediating role was not determined in the study.

Originality/value

The research provides insights into how supply chain flexibility mediates the effect of supply chain information integration on operational performance in the context of the Chinese food industry.

Details

The International Journal of Logistics Management, vol. 29 no. 1
Type: Research Article
ISSN: 0957-4093

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Article
Publication date: 14 November 2016

Ben Nanfeng Luo and Kangkang Yu

The purpose of this paper is to compare the effects on performance of two types of misfits (overfit vs underfit) as well as two types of fits (high-high fit vs low-low fit…

1148

Abstract

Purpose

The purpose of this paper is to compare the effects on performance of two types of misfits (overfit vs underfit) as well as two types of fits (high-high fit vs low-low fit) between environmental uncertainty and supply chain flexibility.

Design/methodology/approach

The two asymmetry hypotheses have been tested with survey data from 212 Chinese manufacturing firms.

Findings

The results in general provided empirical evidences for the asymmetric effects in the fits and misfits between environmental uncertainty and supply chain flexibility. For the same degree of misfit, underfit deteriorates performance more than overfit. In addition, high supply chain flexibility fitting high environmental uncertainty (i.e. high-high fit) results in a higher performance than low supply chain flexibility fitting low environmental uncertainty (i.e. low-low fit).

Practical implications

It suggests that managers should strive to avoid the underfit of supply chain flexibility rather than the overfit, if the perfect fit is impossible to achieve. In addition, as it is beneficial to realize the fit of supply chain flexibility to high levels of environmental uncertainty, managers should probably embrace the highly uncertain environment and enhance the supply chain flexibility of their organizations to meet the increasing uncertainty of environment.

Originality/value

Fit and misfit are the core concepts to understand the relationships among environmental uncertainty, supply chain flexibility strategy, and performance. While the existing literature highlights the differential performance consequences of fit vs misfit between environmental uncertainty and supply chain flexibility strategy, the effects on performance are assumed to be the same for the two types of misfits, and two types of fits. The authors challenge these symmetry assumptions by arguing that overfit has a less negative effect on performance than underfit, and high-high fit has a stronger positive effect than low-low fit. The authors found empirical evidence in a large sample of Chinese manufacturing firms.

Details

The International Journal of Logistics Management, vol. 27 no. 3
Type: Research Article
ISSN: 0957-4093

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Article
Publication date: 10 January 2018

Hua Song, Kangkang Yu and Qiang Lu

Despite their crucial role in sustaining national economies, small and medium enterprises (SMEs) are beset by the constraint of financing at better conditions. The purpose of this…

4892

Abstract

Purpose

Despite their crucial role in sustaining national economies, small and medium enterprises (SMEs) are beset by the constraint of financing at better conditions. The purpose of this paper is to compare supply chain finance (SCF) solutions provided by commercial banks and financial service providers (FSPs) that help SMEs access financing.

Design/methodology/approach

This study looks at multiple case studies using in-depth interviews with focal firms (lenders) to answer the research questions. In-depth interviews were conducted with three Chinese FSPs and three commercial banks providing working capital to the same SMEs. The unit of analysis is SCF solutions that have made the companies competitive in the industry.

Findings

The case studies show that the acquisition of transaction information and business credit in SCF can reduce ex ante information asymmetry. SCF utilizing receivable transfers, closed-loop business, relational embeddedness, and a combination of outcome control and behavioral control can also reduce ex post information asymmetry. For these reasons, compared with commercial bank-dominated SCF, SCF adopted by FSPs in the supply chain can better reduce information asymmetry.

Originality/value

This study contributes to the emerging literature exploring the impact of SCF on SMEs accessing financing. In particular, this study provides supply chain management and operations insights on SCF and their consequent influence. Previous research has focused on the direct dyadic relationship between lenders and borrowers while neglecting supply chain effects. Uniquely, this study explores the different ways commercial banks and FSPs implement SCF solutions.

Details

International Journal of Physical Distribution & Logistics Management, vol. 48 no. 1
Type: Research Article
ISSN: 0960-0035

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Article
Publication date: 7 February 2025

Changchun Tan, Kangkang Yin, Huaqing Wu and Peng Zhou

Corporate ESG performance has attracted widespread attention from various sectors of society. This paper aims to investigate whether analysts’ ESG attention can convey additional…

35

Abstract

Purpose

Corporate ESG performance has attracted widespread attention from various sectors of society. This paper aims to investigate whether analysts’ ESG attention can convey additional information to the market and consequently influence stock pricing efficiency.

Design/methodology/approach

Using A-share listed companies from 2014 to 2021 as the research subjects, this paper employs a deep learning algorithm, word2vec, to construct an ESG dictionary. Text analysis is then applied to create an analysts’ ESG attention index, delving into its impact on stock pricing efficiency.

Findings

Empirical research reveals that: (1) Analysts' ESG attention effectively enhances stock pricing efficiency, with a more significant impact from analysts’ attention to environmental (E) and social (S) factors compared to governance (G); (2) Further analysis indicates that this effect becomes more pronounced when there is higher disparity in corporate ESG ratings, greater marketization in the province where the company is located, and a higher institutional ownership percentage and (3) The mechanism by which analysts' ESG attention influences stock pricing efficiency is through an elevation in investor attention and stock liquidity. Additionally, it is observed that analysts prioritize ESG information to enhance their reputation and business capabilities.

Originality/value

From the perspective of ESG rating divergence, this paper innovatively uses analyst reports to construct ESG attention indicators and analyzes their impact on the efficiency of stock pricing.

Details

Journal of Accounting Literature, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0737-4607

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Article
Publication date: 3 April 2023

Kangkang Yu, Jack Cadeaux, Ben Nanfeng Luo and Cheng Qian

This study aims to extend ambidexterity theory from the perspective of organisational learning and examine how process ambidexterity, which comprises operational flexibility and…

759

Abstract

Purpose

This study aims to extend ambidexterity theory from the perspective of organisational learning and examine how process ambidexterity, which comprises operational flexibility and operational routine, responds to environmental uncertainty and ultimately reduces organisational risks.

Design/methodology/approach

This study tests the hypotheses by analysing 464 annual reports of 115 listed companies in the Chinese agricultural and food industry using content and secondary data analyses. Four case studies are also provided.

Findings

The results show that (1) environmental uncertainty has a positive effect on either operational flexibility or operational routine; (2) both operational flexibility and operational routine have negative effects on organisational risks, supporting the view that process ambidexterity mediates the relationship between environmental uncertainty and organisational risks; and (3) organisational slack plays the role of “double-edged sword” by negatively moderating the effect of environmental uncertainty on operational flexibility and positively moderating the effect of environmental uncertainty on operational routine.

Originality/value

In an uncertain environment, companies are exposed to greater risk. This study contributes to risk management in three ways: first, it extends ambidexterity theory to process management and proposes how process ambidexterity balances operational flexibility and routines. Second, it distinguishes between the different conditions under which flexibility or routines are superior. Third, it explains the mechanisms related to how organisations can resolve environmental uncertainty into risk through process ambidexterity.

Details

International Journal of Operations & Production Management, vol. 43 no. 12
Type: Research Article
ISSN: 0144-3577

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Article
Publication date: 13 November 2017

Hua Song, Kangkang Yu and Songbo Zhang

Based on natural-resource-based view (NRBV), the purpose of this paper is to clarify the dimensions of green procurement and the mechanisms involved in the relationship between…

3529

Abstract

Purpose

Based on natural-resource-based view (NRBV), the purpose of this paper is to clarify the dimensions of green procurement and the mechanisms involved in the relationship between green procurement and firm performance.

Design/methodology/approach

Secondary data were to measure all the variables in 206 Chinese A-share companies’ annual reports, social responsibility reports, environmental reports, and sustainability reports, which were published by Guotai Junan Securities Co., Ltd and Wind Information Co., Ltd.

Findings

The results indicate that although both product-based and process-based green procurement have a positive effect on firm performance, these Chinese companies focus on the impact of product-based green procurement on their operational efficiency as well as the moderating role played by stakeholder satisfaction.

Originality/value

Although studies on green procurement have increased in recent years, issues such as how to measure green purchasing behaviors and how green procurement affects firms’ operational and financial performance are still unexplored. Based on previous literature, two dimensions have been defined for green procurement in this study to develop corresponding measurements, namely, product-based green procurement and process-based green procurement. Besides, this study considers operational efficiency as the mediator and stakeholder satisfaction as the moderator when constructing a new conceptual model to illustrate the relationship between green procurement and firm performance.

Details

The International Journal of Logistics Management, vol. 28 no. 4
Type: Research Article
ISSN: 0957-4093

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Article
Publication date: 13 August 2018

Kangkang Yu, Jack Cadeaux, Nanfeng Luo, Cheng Qian and Zhenghao Chen

The purpose of this paper is to understand how the consistency between objective and perceived environmental uncertainty might affect supply chain flexibilities that cope with…

1267

Abstract

Purpose

The purpose of this paper is to understand how the consistency between objective and perceived environmental uncertainty might affect supply chain flexibilities that cope with supply chain risk.

Design/methodology/approach

This study adopted a case study of comparative four companies in order to obtain an in-depth knowledge of the environmental conditions under which the companies implement different types of supply chain risk management (SCRM) strategies: logistics flexibility and relationship flexibility.

Findings

The case analysis not only distinguished the different effects of objective and perceived environmental uncertainty on supply chain flexibility, but also established the propositions about the effects of the consistency between objective and perceived environmental uncertainty on logistics flexibility and relationship flexibility in SCRM.

Originality/value

In principle, supply chain flexibility aims to cope with complex and turbulent environments. Yet, empirical findings about the effects of environmental uncertainty on supply chain flexibility are inconclusive. This study addressed this question by differentiating between objective and perceived environmental uncertainty as well as between logistics and relationship supply chain flexibilities.

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Article
Publication date: 20 March 2023

Hua Song, Siqi Han and Kangkang Yu

This study examines the cognitive factors of adopting blockchain technology in various supply chain scenarios and its role in reframing the distinctive values of supply chain…

1703

Abstract

Purpose

This study examines the cognitive factors of adopting blockchain technology in various supply chain scenarios and its role in reframing the distinctive values of supply chain financing. Based on expectancy theory, this study explores the different profiles underlying the components of expectancy, valence and instrumentality.

Design/methodology/approach

This is a multiple-case study of four Fintech companies using blockchain technology to promote the performance of supply chain operations and financing.

Findings

The results show that blockchain-enabled supply chain finance (BSCF) can be classified into four scenarios based on the scope and purpose of blockchain technology applications. The success of BSCF depends on the profiles of BSCF expectancy (the recognized purpose and scope of BSCF), instrumentality (identified blockchain attributes and other technology combinations) and valence (the perceived distinctive value of BSCF). Blockchain attributes help solve information asymmetry problems and enhance financing performance in two ways: one is supporting transparency, traceability and verification of transmissions and the other entails facilitating a transformation to new business models.

Originality/value

This research applies a new perspective based on expectancy theory to study how cognitive factors affect Fintech companies' blockchain solutions under a given supply chain operation or financing activity. It explains the behavioral antecedents for applying blockchain technology, the situations appropriate for the different roles of blockchain technology and the profiles for realizing the value of blockchain technology.

Details

International Journal of Operations & Production Management, vol. 43 no. 12
Type: Research Article
ISSN: 0144-3577

Keywords

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