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Article
Publication date: 26 July 2011

Huajun Cao, Yanbin Du and Yongpeng Chen

China has become the low‐cost manufacturing center of the world. The purpose of this paper is to provide an in‐depth analysis of a new manufacturing strategy for China's future…

1283

Abstract

Purpose

China has become the low‐cost manufacturing center of the world. The purpose of this paper is to provide an in‐depth analysis of a new manufacturing strategy for China's future manufacturing sector which is trying to transform into a new low‐carbon development paradigm. It also aims to discuss the empirical implications and policy suggestions.

Design/methodology/approach

The paper is based on the broad reviewing of the relative government documents and press reports in China, the USA, and Japan. The authors also conducted case research of China's remanufacturing practices.

Findings

The high energy consumption and emissions of China's manufacturing sector results from the widespread use of obsolete production equipment, which can produce low‐cost products with a severely negative environmental effect. The remanufacturing strategy can upgrade existing production equipment to improve production efficiency, which will be a more practical paradigm for China's future manufacturing sector.

Originality/value

The previous relative low‐carbon policies in China are mainly associated with the administrative measures, such as direct “command‐control”, which have paid little attention to the practical development paradigm. This paper first provides a framework for understanding and practical evidence for the remanufacturing strategy as a new low‐carbon paradigm for the giant manufacturing sector of the world's largest developing country.

Details

Journal of Science and Technology Policy in China, vol. 2 no. 2
Type: Research Article
ISSN: 1758-552X

Keywords

Open Access
Article
Publication date: 27 January 2023

Senyu Xu, Huajun Tang and Yuxin Huang

The purpose of this research is to investigate how to introduce a financing scheme to tackle the manufacturer's capital constraint problem, discuss the effects of data-driven…

1581

Abstract

Purpose

The purpose of this research is to investigate how to introduce a financing scheme to tackle the manufacturer's capital constraint problem, discuss the effects of data-driven marketing (DDM) quality, cross-channel-return (CCR) rate and financing interest rate on the members' pricing and delivery-lead-time decisions and optimal performances, and analyzes `how to achieve the coordination within a dual-channel supply chain (DSC) by contract coordination.

Design/methodology/approach

This work establishes a DSC model with DDM, and the offline retailer can provide internal financing to the capital-constrained online manufacturer. The demand under the price is determined based on DDM quality, customer channel preference and delivery lead time. Then, combined with the Stackelberg game, the optimal pricing and delivery-lead-time decisions are discussed under the inconsistent and consistent pricing strategies with decentralized and centralized systems. Furthermore, it designs a manufacturer-revenue sharing contract to coordinate the members under the two pricing strategies.

Findings

(1) The increase of DDM quality will reduce the delivery-lead-time under the inconsistent or consistent pricing strategy and will push the selling prices; (2) The growth of the CCR rate will raise selling prices and extend the delivery-lead-time under the decentralized decision; (3) Under price competition, the offline selling price is higher than the online selling price when customers prefer the offline channel and vice versa; (4) The retailer and the manufacturer can achieve a win-win situation through a manufacturer-revenue sharing contract.

Originality/value

This paper contributes to the studies related to DSC by investigating pricing and delivery-lead-time decisions based on DDM, CCR, internal financing and supply chain contract and proposes some managerial implications.

Details

Industrial Management & Data Systems, vol. 123 no. 3
Type: Research Article
ISSN: 0263-5577

Keywords

Article
Publication date: 13 March 2024

Ziyuan Ma, Huajun Gong and Xinhua Wang

The purpose of this paper is to construct an event-triggered finite-time fault-tolerant formation tracking controller, which can achieve a time-varying formation control for…

Abstract

Purpose

The purpose of this paper is to construct an event-triggered finite-time fault-tolerant formation tracking controller, which can achieve a time-varying formation control for multiple unmanned aerial vehicles (UAVs) during actuator failures and external perturbations.

Design/methodology/approach

First, this study developed the formation tracking protocol for each follower using UAV formation members, defining the tracking inaccuracy of the UAV followers’ location. Subsequently, this study designed the multilayer event-triggered controller based on the backstepping method framework within finite time. Then, considering the actuator failures, and added self-adaptive thought for fault-tolerant control within finite time, the event-triggered closed-loop system is subsequently shown to be a finite-time stable system. Furthermore, the Zeno behavior is analyzed to prevent infinite triggering instances within a finite time. Finally, simulations are conducted with external disturbances and actuator failure conditions to demonstrate formation tracking controller performance.

Findings

It achieves improved performance in the presence of external disturbances and system failures. Combining limited-time adaptive control and event triggering improves system stability, increase robustness to disturbances and calculation efficiency. In addition, the designed formation tracking controller can effectively control the time-varying formation of the leader and followers to complete the task, and by adding a fixed-time observer, it can effectively compensate for external disturbances and improve formation control accuracy.

Originality/value

A formation-following controller is designed, which can handle both external disturbances and internal actuator failures during formation flight, and the proposed method can be applied to a variety of formation control scenarios and does not rely on a specific type of UAV or communication network.

Details

Aircraft Engineering and Aerospace Technology, vol. 96 no. 3
Type: Research Article
ISSN: 1748-8842

Keywords

Article
Publication date: 10 July 2007

B. Faridnia, M.M. Kashani Motlagh and A. Maghsoudipour

To evaluate the effect of flux, activator and co‐activator on solid state synthesis of SrAl2O4: Eu2 + , Dy3 +  phosphor, where boric oxide, europium oxide and dispersium oxide…

1109

Abstract

Purpose

To evaluate the effect of flux, activator and co‐activator on solid state synthesis of SrAl2O4: Eu2 + , Dy3 +  phosphor, where boric oxide, europium oxide and dispersium oxide were used, respectively.

Design/methodology/approach

To optimise synthesis condition of long lasting phosphorescence SrAl2O4 phosphor, boric oxide was used as a flux. To improve relative intensity of SrAl2O4: Eu2 +  phosphor, the critical concentration of Eu2 +  was determined. The effect of various concentration of co‐activator on afterglow properties, the effect of Dy3 +  ion on the emission and excitation spectra were examined.

Findings

The SrAl2O4: Eu2 + , Dy3 +  phosphor powders have been synthesised by solid state reaction method. The result of XRD patterns indicated that, addition of 5 mol% B2O3 enhanced the formation of SrAl2O4 at 1,200°C. Investigation on the variation of emission intensity of different phosphors containing different amounts of Eu2 +  revealed that after 6 mol% of Eu2 +  concentration, quenching process occurred. Dy3 +  formed trap levels and results demonstrated that increasing concentration of Dy3 +  up to 5 mol% reduced the relative intensity and increased the decay time.

Originality/value

Using B2O3 as a flux and solid state reaction method for preparation of this phosphor is in good agreement with industrial production and make it economic, because of reduced sintering temperature.

Details

Pigment & Resin Technology, vol. 36 no. 4
Type: Research Article
ISSN: 0369-9420

Keywords

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