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Article
Publication date: 7 May 2024

Zhouxiang Jiang, Shiyuan Chen, Yuchen Zhao, Zhongjie Long, Bao Song and Xiaoqi Tang

In typical model-based calibration, linearization errors are derived inevitably, and non-negligible negative impact will be induced on the identification results if the rotational…

Abstract

Purpose

In typical model-based calibration, linearization errors are derived inevitably, and non-negligible negative impact will be induced on the identification results if the rotational kinematic errors are not small enough or the lengths of links are too long, which is common in the industrial cases. Thus, an accurate two-step kinematic calibration method minimizing the linearization errors is presented for a six-DoF serial robot to improve the calibration accuracy.

Design/methodology/approach

The negative impact of linearization on identification accuracy is minimized by removing the responsible linearized kinematic errors from the complete kinematic error model. Accordingly, the identification results of the dimension-reduced new model are accurate but not complete, so the complete kinematic error model, which achieves high identification accuracy of the rest of the error parameters, is combined with this new model to create a two-step calibration procedure capable of highly accurate identification of all the kinematic errors.

Findings

The proportions of linearization errors in measured pose errors are quantified and found to be non-negligible with the increase of rotational kinematic errors. Thus, negative impacts of linearization errors are analyzed quantitatively in different cases, providing the basis for allowed kinematic errors in the new model. Much more accurate results were obtained by using the new two-step calibration method, according to a comparison with the typical methods.

Originality/value

This new method achieves high accuracy with no compromise on completeness, is easy to operate and is consistent with the typical method because the second step with the new model is conveniently combined without changing the sensors or measurement instrument setup.

Details

Industrial Robot: the international journal of robotics research and application, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0143-991X

Keywords

Article
Publication date: 20 February 2023

Yuhong Wang, Xiaoqi Sheng and Yudie Xie

This study aims to establish a centralized decision-making game model and manufacturer-led Stackelberg game model based on factors of risk aversion of supply chain members and…

Abstract

Purpose

This study aims to establish a centralized decision-making game model and manufacturer-led Stackelberg game model based on factors of risk aversion of supply chain members and product greenness. The research aims to study whether the introduction of the “cost + risk sharing” contract affects coordination of this type of green supply by calculating the optimal decision of each mode.

Design/methodology/approach

This research designs a supply chain model under centralized and decentralized decision-making. This model uses the Stackelberg game to calculate the optimal decision under decentralized decision-making to evaluate the effect of a green supply chain and then analyze the “cost + risk sharing” contract and the degree of coordination of the supply chain. A sensitivity analysis is conducted on the centralized mode for the impact of variables on the supply chain.

Findings

This research finds a double marginalization effect in decentralized decision-making, and the risk aversion coefficient plays a decisive role in the utility of supply chain members. The specific range of risk- and cost-sharing factors allows supply chain members to achieve Pareto improvements and provides decision-making based on the corresponding management strategies according to each other’s risk preference degree.

Research limitations/implications

The influence of each variable on the green supply chain in the centralized mode is studied by MATLAB numerical simulation. It provides reference for green supply chain members to formulate corresponding management strategies according to each other's risk preference degree.

Originality/value

This research innovatively considers manufacturers and retailers to explore the market demand for product greenness. It introduces a novel “cost + risk sharing” contract to coordinate the green supply chain.

Details

Chinese Management Studies, vol. 18 no. 1
Type: Research Article
ISSN: 1750-614X

Keywords

Article
Publication date: 11 August 2022

Xiaoqi Wang, Jianfu Cao and Ye Cao

Adaptive slicing is a key step in 3D printing as it is closely related to the building time and the surface quality. This study aims to develop an adaptive layering algorithm that…

Abstract

Purpose

Adaptive slicing is a key step in 3D printing as it is closely related to the building time and the surface quality. This study aims to develop an adaptive layering algorithm that can coordinate the optimization of printing quality and efficiency to meet different printing needs.

Design/methodology/approach

A multiobjective optimization model is established for printing quality, printing time and layer height based on the variation of surface features, profile slope and curvature of the model. The optimal solution is found by an improved method combining Newton's method and gradient method and adapts to different printing requirements by adjusting the parameter thresholds.

Findings

Several benchmarks are applied to verify this new method. The proposed method has also been compared with the uniform layering method, it reduces the volume error by 46.4% and shortens the printing time by 28.1% and is compared with five existing adaptive layering methods to demonstrate its superior performance.

Originality/value

Compared with other methods with only one layered result, this method is a demand-oriented algorithm that can obtain different results according to different needs and it can reach a trade-off between the building time and the surface quality.

Details

Rapid Prototyping Journal, vol. 29 no. 2
Type: Research Article
ISSN: 1355-2546

Keywords

Article
Publication date: 29 March 2013

He‐Chun Wang, Jing‐Qin Su and Hui‐Ling Cao

The color TV industry in China has become a mature industry. Its development demonstrates and provides reference implications for how developing industries within a country can…

Abstract

Purpose

The color TV industry in China has become a mature industry. Its development demonstrates and provides reference implications for how developing industries within a country can achieve a technological leap. This paper aims to address this issue.

Design/methodology/approach

An exploratory case study approach is taken to find the key factors in the technological catch‐up of China's traditional industry.

Findings

In the study it is found that China's color TV industry, as a mature traditional industry, has four‐dimensional key factors affecting the catch‐up of technology in the flat‐panel stage: market; merger and acquisition; international cooperation innovation for patent; and the roles of internal reform. “Market” is the window of opportunity and challenge; “merger and acquisition” is the key factor for making the patent convert from external mode to internal mode by deviant‐track. The “international cooperation innovation for patent” is also a key factor to ensure achievement of technology catch‐up and sustainable technological innovation. The role of internal reform promoter is the key factor in the technological catch‐up process in which taking entrepreneur as the core.

Originality/value

The article describes Changhong's flat‐panel TV technology catch‐up mode, analyzes four‐dimensional key factors affecting the technology catch‐up of China's color TV industry; the Chinese color TV industry as mature industry; and discusses which developments have demonstrated how to achieve a technological leap in developing industries.

Details

Journal of Knowledge-based Innovation in China, vol. 5 no. 1
Type: Research Article
ISSN: 1756-1418

Keywords

Article
Publication date: 26 June 2021

Muhammad Farooq, Amna Noor, Shahzadah Fahed Qureshi and Zahra Masood Bhutta

This study aims to analyse 508 financially distressed firm-year observations for the period 2010–2018 of Pakistan Stock Exchange (PSX) listed firms to examine the magnitude of…

Abstract

Purpose

This study aims to analyse 508 financially distressed firm-year observations for the period 2010–2018 of Pakistan Stock Exchange (PSX) listed firms to examine the magnitude of indirect financial distress costs (IFDC) and to investigate which firm-specific variable is relatively important in explaining these indirect costs. This will not only enrich empirical literature but also helpful in cross-country comparison.

Design/methodology/approach

Optimal model selection along with panel data analysis technique is used to select the most optimal model to observe the findings. Financial distress is measure through Altman’s Z-score and firm-specific variables cover leverage, level of intangible assets, investment policy, tangible assets, firm’s size, level of liquid assets and Tobin’s Q of sample firms.

Findings

The findings of this study show that the average size of IFDC for the sample observations is 6.70%. In addition to this, finding further suggest that leverage, the level of intangible assets and changes in investment policy have positive while the size of the firm and Tobin’s Q have a significant negative impact on IFDC. Further, this paper argues that the level of tangible assets and liquid assets are statistically unimportant in observing the IFDC for PSX financially distressed firm-year observations.

Practical implications

The findings of this study provide more insight to corporate managers and investors about the association between firm-specific financial characteristics and IFDC concerning Pakistani firms. Furthermore, this study contributes to the existing literature by adding new evidence from developing countries such as Pakistan which are helpful for regulatory bodies and policymakers in the formulation of long-term strategies to manage the financial distress costs.

Originality/value

The study extends the body of existing literature on IFDC regarding Pakistan. The results suggest that policymakers may pay special attention to the quality of a firm’s capital structure strategies while predicting corporate financial distress costs.

Details

Pacific Accounting Review, vol. 33 no. 4
Type: Research Article
ISSN: 0114-0582

Keywords

Article
Publication date: 6 June 2016

Sajjad Nazir, Amina Shafi, Wang Qun, Nadia Nazir and Quang Dung Tran

The purpose of this paper is to explore the relationship between extrinsic, intrinsic and social rewards and two components of organizational commitment and finally Chinese…

10578

Abstract

Purpose

The purpose of this paper is to explore the relationship between extrinsic, intrinsic and social rewards and two components of organizational commitment and finally Chinese workers turnover intention in public and private sector.

Design/methodology/approach

A questionnaire was utilized as the method for data collection. Structural equation modeling was utilized to examine survey data obtained from 202 employees in the southern part of China.

Findings

The findings exhibit that extrinsic, social and intrinsic rewards were significantly related to affective and normative commitment. Findings suggest that satisfaction with extrinsic benefits, supervisor support, coworker support, autonomy, training and participation in decision making has substantial impact on employee’s affective and normative commitment. However, affective and normative commitment was negatively related to employee turnover intention.

Research limitations/implications

This study covers different public and private-sector organization employees working in China. Therefore other geographical areas could be designated for future research endeavors with a bigger sample size.

Practical implications

With the purpose of boosting employee commitment, managers must provide their employees with greater autonomy, appropriate training and participation in decision making in the organization, as well as enhancing supervisor and coworker support.

Originality/value

This research investigates how Chinese employees with different categories of organizational rewards react to different kinds of organizational commitment and turnover intention in Chinese organizational context.

Details

Employee Relations, vol. 38 no. 4
Type: Research Article
ISSN: 0142-5455

Keywords

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