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Article
Publication date: 2 October 2019

Yue Li, Xiaoquan Chu, Zetian Fu, Jianying Feng and Weisong Mu

The purpose of this paper is to develop a common remaining shelf life prediction model that is generally applicable for postharvest table grape using an optimized radial…

Abstract

Purpose

The purpose of this paper is to develop a common remaining shelf life prediction model that is generally applicable for postharvest table grape using an optimized radial basis function (RBF) neural network to achieve more accurate prediction than the current shelf life (SL) prediction methods.

Design/methodology/approach

First, the final indicators (storage temperature, relative humidity, sensory average score, peel hardness, soluble solids content, weight loss rate, rotting rate, fragmentation rate and color difference) affecting SL were determined by the correlation and significance analysis. Then using the analytic hierarchy process (AHP) to calculate the weight of each indicator and determine the end of SL under different storage conditions. Subsequently, the structure of the RBF network redesigned was 9-11-1. Ultimately, the membership degree of Fuzzy clustering (fuzzy c-means) was adopted to optimize the center and width of the RBF network by using the training data.

Findings

The results show that this method has the highest prediction accuracy compared to the current the kinetic–Arrhenius model, back propagation (BP) network and RBF network. The maximum absolute error is 1.877, the maximum relative error (RE) is 0.184, and the adjusted R2 is 0.911. The prediction accuracy of the kinetic–Arrhenius model is the worst. The RBF network has a better prediction accuracy than the BP network. For robustness, the adjusted R2 are 0.853 and 0.886 of Italian grape and Red Globe grape, respectively, and the fitting degree are the highest among all methods, which proves that the optimized method is applicable for accurate SL prediction of different table grape varieties.

Originality/value

This study not only provides a new way for the prediction of SL of different grape varieties, but also provides a reference for the quality and safety management of table grape during storage. Maybe it has a further research significance for the application of RBF neural network in the SL prediction of other fresh foods.

Details

British Food Journal, vol. 121 no. 11
Type: Research Article
ISSN: 0007-070X

Keywords

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Article
Publication date: 21 October 2019

Xiaoquan Chu, Yue Li, Dong Tian, Jianying Feng and Weisong Mu

The purpose of this paper is to propose an optimized hybrid model based on artificial intelligence methods, use the method of time series forecasting, to deal with the…

Abstract

Purpose

The purpose of this paper is to propose an optimized hybrid model based on artificial intelligence methods, use the method of time series forecasting, to deal with the price prediction issue of China’s table grape.

Design/methodology/approach

The approaches follows the framework of “decomposition and ensemble,” using ensemble empirical mode decomposition (EEMD) to optimize the conventional price forecasting methods, and, integrating the multiple linear regression and support vector machine to build a hybrid model which could be applied in solving price series predicting problems.

Findings

The proposed EEMD-ADD optimized hybrid model is validated to be considered satisfactory in a case of China’ grape price forecasting in terms of its statistical measures and prediction performance.

Practical implications

This study would resolve the difficulties in grape price forecasting and provides an adaptive strategy for other agricultural economic predicting problems as well.

Originality/value

The paper fills the vacancy of concerning researches, proposes an optimized hybrid model integrating both classical econometric and artificial intelligence models to forecast price using time series method.

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Article
Publication date: 27 March 2020

Luyao Wang, Jianying Feng, Xiaojie Sui, Xiaoquan Chu and Weisong Mu

The purpose of this paper is to provide reference for researchers by reviewing the research advances and trend of agricultural product price forecasting methods in recent years.

Abstract

Purpose

The purpose of this paper is to provide reference for researchers by reviewing the research advances and trend of agricultural product price forecasting methods in recent years.

Design/methodology/approach

This paper reviews the main research methods and their application of forecasting of agricultural product prices, summarizes the application examples of common forecasting methods, and prospects the future research directions.

Findings

1) It is the trend to use hybrid models to predict agricultural products prices in the future research; 2) the application of the prediction model based on price influencing factors should be further expanded in the future research; 3) the performance of the model should be evaluated based on DS rather than just error-based metrics in the future research; 4) seasonal adjustment models can be applied to the difficult seasonal forecasting tasks in the agriculture product prices in the future research; 5) hybrid optimization algorithm can be used to improve the prediction performance of the model in the future research.

Originality/value

The methods from this paper can provide reference for researchers, and the research trends proposed at the end of this paper can provide solutions or new research directions for relevant researchers.

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Article
Publication date: 4 January 2016

Mu Weisong, Li Chengcheng, Tian Dong and Feng Jianying

The purpose of this paper is to analyze and identify Chinese consumers’ behavior and preference characters toward table grapes, especially to explore the variance of…

Abstract

Purpose

The purpose of this paper is to analyze and identify Chinese consumers’ behavior and preference characters toward table grapes, especially to explore the variance of consumption preference in recent five years.

Design/methodology/approach

Two representative China-wide questionnaire surveys were conducted by face-to-face and online questionnaire survey, respectively, in 2009 and 2014. Comparative study was adopted to dig the changes of consumers’ preferences and habits. ANOVA was adopted to explore the statistically difference among consumers’ behavior and preferences.

Findings

The results indicate that Chinese consumers are rational-motivation-driven grape consumers, they prefer to sweet taste, seedless and medium priced grapes. Safety and quality characters (clean appearance, freshness and taste) were ranked as the most important grape attributes. As a whole, it was found that consumers are more quality-focussed and safety-conscious five years later, so some variances was showed in their purchase habits and preferences, such as the choice of purchase place, attitude to special grapes and willingness to pay to safe and genetically modified grapes.

Originality/value

This research not only indicates some stable preferences of Chinese consumers toward table grape, but also finds out some significant changes in consumers’ behavior before and after five years based on a comparative study in 2009 and 2014.

Details

British Food Journal, vol. 118 no. 1
Type: Research Article
ISSN: 0007-070X

Keywords

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Article
Publication date: 15 March 2016

Lei Deng, Ruimei Wang, Tian Dong, Jianying Feng and Mu Weisong

The paper aims to understand the cost-benefits, financial performance and relationships of the key actors in the table grape supply chain by using value chain analysis method.

Abstract

Purpose

The paper aims to understand the cost-benefits, financial performance and relationships of the key actors in the table grape supply chain by using value chain analysis method.

Design/methodology/approach

This study presents the result of analysis on financial performance of key actors in three table grape supply chains and the relationship among them using value chain analysis. The table grape supply chain was analyzed using data collected from a field survey in 5 regions of China. The key actors of these chains were interviewed. The costs, benefits, operational and financial performance of supply chain actors were analyzed.

Findings

The results show that, despite receiving the highest proportion of total net profit and making the highest value creation, vinegrowers are facing fluctuant and uncertain commercial returns due to the production and market risks, fluctuation of farm-gate price and the buyer dominant relationship with wholesalers. Moreover, although it is profitable to all key actors, table grape supply chain still faces several challenges including unorganized and dispersed production systems, power asymmetry and lack of information sharing, all of which are the barriers to the improvement of the whole chain performance and the long term sustainability of this important industry.

Originality/value

This paper not only helps to understand the relationship among the key actors and the critical factors impacting on the whole chain performance, but also offer useful guidance for the policy makers and key actors to achieve further improvement of the table grape supply chain performance and provide valuable implications for the future studies on agriculture products.

Details

British Food Journal, vol. 118 no. 5
Type: Research Article
ISSN: 0007-070X

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Article
Publication date: 19 October 2012

Huiru Feng, Jianying Feng, Dong Tian and Weisong Mu

Chinese consumers have increased their consumption of grape products in recent years due to recognition of the nutritional value of grapes. At the same time, consumers are…

Abstract

Purpose

Chinese consumers have increased their consumption of grape products in recent years due to recognition of the nutritional value of grapes. At the same time, consumers are paying more attention to food safety because of the occasional occurrence of food safety scares. Based on a survey of consumers in Zhejiang, China, this paper aims to understand and provide information on consumers' perceptions of quality and safety for grape products, purchasing behavior, and willingness to pay (WTP) for grape products.

Design/methodology/approach

This paper presents the results of empirical research. The survey method was a direct (face‐to‐face) interview based on a standardized questionnaire. Consumers' perceptions of the quality and safety of grape products were examined, together with consumers' demographic characteristics.

Findings

The results indicate that quality and safety, rather than price, are considered the most important factors that affect consumers' purchasing decisions for grape products. Consumer's educational level, the average price of grapes and the perception of safety are the main factors that determine consumers' WTP for grape products. As price increases, the consumer's WTP for safe and high quality grapes decreases.

Originality/value

This research provides a chance to understand consumers' demand and WTP for the quality and safety of grape products in Zhejiang, China. Further understanding was gained regarding factors affecting consumers judging grape products, which in turn may influence their purchase decisions. The results also could guide grape growers to supply products that better meet consumers' needs. It is proposed that the Chinese government pay more attention to taking measures to improve the quality and safety of grape products.

Details

British Food Journal, vol. 114 no. 11
Type: Research Article
ISSN: 0007-070X

Keywords

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Article
Publication date: 1 April 2014

Feng Jianying, Wang Xia, Fu Zetian and Mu Weisong

The paper aims to understand consumers' perception and cognition toward table grapes, which focuses on the most important attributes, consumption consequences and personal…

Abstract

Purpose

The paper aims to understand consumers' perception and cognition toward table grapes, which focuses on the most important attributes, consumption consequences and personal values of grape consumption and the relations among them.

Design/methodology/approach

The study related grape consumption with consumers based on Means-end chain analysis. The data were gathered with both laddering interviews (n=37) and questionnaire survey returned by 843 individuals in 31 provinces of China. The data were firstly processed by SPSS software and descriptive statistics was adopted to evaluate consumers' awareness. Furthermore, MECanalyst software was opted for, to construct the hierarchical relations of table grape consumption.

Findings

The findings are that consumers consume grapes based on their functional cognition and sensory perception. The quality-orientated characters are deemed to be the most important grape attributes, healthy and practical function are the main expected benefits and desired values in table grape consumption.

Practical implications

The findings can provide some implications to producers, administers and operators in the grape industry and inspire them to design products that will better satisfy consumers. Stakeholders in grape industries should take measures to inform consumers of grape benefits so as to increase grape consumption and expand the market.

Originality/value

The paper fulfils the combinations of laddering interview and structured questionnaire to conduct the large-scale samples survey about consumers' perception based on MEC analysis. Findings from this study reinforce the importance of research into the relationship between products and consumers.

Details

British Food Journal, vol. 116 no. 4
Type: Research Article
ISSN: 0007-070X

Keywords

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Case study
Publication date: 1 September 2016

Feng Tianjun, Zhang Chunyi and He Jiani

Established in 2010, Mellower Coffee has 40 exquisite chain stores and three branches, namely Mellower Coffee Sales, Mellower Business Management and Shanghai Mellower…

Abstract

Established in 2010, Mellower Coffee has 40 exquisite chain stores and three branches, namely Mellower Coffee Sales, Mellower Business Management and Shanghai Mellower Roasting Factory. Positioned as a premium coffee brand in China, Mellower Coffee has realized the integrated operation and management of the whole industrial chain from raw coffee trade, roasting factory, coffee retail products, specialty coffee chain, office coffee to coffee academy. It has a vision to attract and cultivate more and more coffee lovers by constant innovation coffee culture promotion.

Details

Management School, Fudan University, vol. no.
Type: Case Study
ISSN: 2632-7635
Published by: Management School, Fudan University

Keywords

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Article
Publication date: 18 May 2021

Daoguang Yang, Jiani Wang and Hanwen Chen

This study aims to investigate whether and how earnings guidance affects corporate innovation.

Abstract

Purpose

This study aims to investigate whether and how earnings guidance affects corporate innovation.

Design/methodology/approach

Exploiting the setting of China, where the Shenzhen Stock Exchange has required all public firms listed on its ChiNext board to issue earnings guidance since 2012, this study uses a difference-in-differences (DID) methodology to examine the effect of earnings guidance on corporate innovation and further conducts cross-sectional analyzes from the information risk and monitoring demand perspectives. Moreover, the authors conduct path analysis to verify the possible channels through which corporate innovation is impeded by market pressure or improved through increased corporate transparency.

Findings

This study documents a positive relationship between earnings guidance and corporate innovation, as measured by the number of invention patents, indicating that the “corporate governance” hypothesis dominates in China. Cross-sectional analyzes show that this positive effect is more pronounced for firms subject to greater information risk and monitoring demand. Finally, the path analysis further confirms that earnings guidance improves innovation by increasing corporate transparency.

Practical implications

First, this study captures the bright side of mandatory earnings guidance and suggests that increasing the disclosure frequency can yield benefits for firms. Second, the findings imply that regulations, regardless of what they refer to, should be based on a country’s specific context.

Originality/value

First, this study provides evidence supporting the “corporate governance” argument based on the context of China and, thus contributes to the debate on earnings guidance. Second, this study enriches the literature on the economic consequences of earnings guidance. Third, the study extends research on the determinants of corporate innovation.

Details

Nankai Business Review International, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2040-8749

Keywords

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Article
Publication date: 3 May 2013

Haizhao Liang, Zhaowei Sun and Jianying Wang

This paper aims to investigate the fast attitude coordinated control problem for rigid satellite swarms with communication delays.

Abstract

Purpose

This paper aims to investigate the fast attitude coordinated control problem for rigid satellite swarms with communication delays.

Design/methodology/approach

Based on behavior‐based control approach, the attitude control system is designed to guarantee that the attitude of the satellite swarm converge to a dynamic reference state in finite time. A fast sliding mode is developed to improve the convergence rate and robustness of the control system. All the effects of communication delays, parameter uncertainties and external disturbances are taken into account simultaneously, and the communication topology of the satellite swarm can be arbitrary types. Numerical simulations are provided to demonstrate the analytic results.

Findings

Despite the existence of communication delays, parameter uncertainties and external disturbances, the stability of the closed‐loop system can be successfully guaranteed and the proposed control strategies are effective to overcome these unexpected phenomena subject to arbitrary communication topology.

Originality/value

This paper introduces a fast terminal sliding mode control method which can guarantee the fast convergence of the attitude state of the satellite swarm in the presence of communication delays, switched communication topology, parameter uncertainties and external disturbances.

Details

Aircraft Engineering and Aerospace Technology, vol. 85 no. 3
Type: Research Article
ISSN: 0002-2667

Keywords

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