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Article
Publication date: 11 March 2022

Ying Lv, Jinlong Feng, Guangbin Wang and Hua Li

This study aims to improve the maneuverability and stability of four-wheel chassis in a small paddy field; a front axle swing steering four-wheel chassis with optimal steering is…

104

Abstract

Purpose

This study aims to improve the maneuverability and stability of four-wheel chassis in a small paddy field; a front axle swing steering four-wheel chassis with optimal steering is designed.

Design/methodology/approach

When turning, the front inner wheel stops and the rear inner wheel is in the following state. The hydraulic drive system of the walking wheel adopts a driving mode in which two front-wheel motors are connected in series and two rear wheel motors in parallel. The chassis uses a combination of a gasoline engine with a water cooling system, a CVT continuously variable transmission and a hydraulic drive system to increase the control capability. The front axle rotary chassis adopts a step-less variable speed engine and a hydraulic control system to solve the hydraulic stability of the chassis in uphill and downhill conditions so as to effectively control the over-speed of the wheel-side drive motors. Through the quadratic orthogonal rotation combination design test, the mathematical models of uphill and downhill front-wheel pressures and test factors are established.

Findings

The results show that the chassis stability is optimal when the back pressure is 0.5 MPa, and the rotating slope is 4°. The uphill and downhill pressures of the front wheels are 2.38 MPa and 1.5 MPa, respectively.

Originality/value

The influence of external changes on the pressure of hydraulic motors is studied through experiments, which lays the foundation for further research.

Details

Journal of Engineering, Design and Technology, vol. 22 no. 2
Type: Research Article
ISSN: 1726-0531

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Article
Publication date: 24 January 2020

Jing Hu, Qiong-Ying Lv, Xin-Ming Zhang, Zeng-Yan Wei and Hai Long Li

This paper aims to present ball bearings with a composite structure based on the bionics principle and shows the comparison between five types of different structures.

158

Abstract

Purpose

This paper aims to present ball bearings with a composite structure based on the bionics principle and shows the comparison between five types of different structures.

Design/methodology/approach

By means of the finite element method, the stress and other parameters between different structures are compared and verified. Finally, the comprehensive parameters of different structures are evaluated by the analytic hierarchy process method.

Findings

The evaluation of the comprehensive parameters of five types of structures is shown here.

Originality/value

The value of this paper is calculated and compared to the parameters of five types of different structures, and the parameter score evaluation of each structure is given. Different structures can be selected according to different parameter requirements, which to provide a theoretical basis for the design of ball bearings.

Peer review

The peer review history for this article is available at: https://publons.com/publon10.1108/ILT-10-2019-0413

Details

Industrial Lubrication and Tribology, vol. 72 no. 6
Type: Research Article
ISSN: 0036-8792

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Article
Publication date: 5 March 2019

Yang Liu, Ping Deng, Jiang Wei, Ying Ying and Mu Tian

The purpose of this paper is to examine the relationships between environment turbulence, knowledge transfer and innovation performance for emerging market multinationals (EMNEs…

1350

Abstract

Purpose

The purpose of this paper is to examine the relationships between environment turbulence, knowledge transfer and innovation performance for emerging market multinationals (EMNEs) in an asymmetric international R&D alliance.

Design/methodology/approach

Data were collected through a survey of high-tech firms in Zhejiang Province of China from 2013 to 2015.

Findings

Innovation performance of EMNEs is positively influenced by knowledge transfer activities (knowledge replication and knowledge adaption), technological and market turbulence, while negatively influenced by institutional turbulence. In addition, different aspects of environmental turbulence moderate the relationship between knowledge transfer practices and innovation performance of EMNEs differently.

Research limitations/implications

Future studies could use a longitudinal design to capture the dynamism driving innovation performance of EMNEs through R&D alliances.

Practical implications

Practical guidelines are provided particularly for EMNE managers on how to develop an innovation strategy by leveraging external knowledge, adaptive innovation and environmental turbulence.

Originality/value

This study deepens the knowledge of how EMNEs enhance their innovation by building the linkage between environmental turbulence and absorptive capacity through knowledge transfer activities in an asymmetric international R&D alliance.

Details

Journal of Business & Industrial Marketing, vol. 34 no. 6
Type: Research Article
ISSN: 0885-8624

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Article
Publication date: 27 August 2021

Dan Wang, Xueqing Wang, Lu Wang, Henry Liu, Michael Sing and Bingsheng Liu

This study aims to develop a Stackelberg Game Model for seeking the optimal subsidy plans with varying levels of government financial capability (GFC). Furthermore, the…

207

Abstract

Purpose

This study aims to develop a Stackelberg Game Model for seeking the optimal subsidy plans with varying levels of government financial capability (GFC). Furthermore, the scenario-based analysis is conducted and will enable governments to identify a comprehensive subsidy plan as follows: improve project performance and optimise social welfare.

Design/methodology/approach

A Stackelberg Game Model is developed to optimise the effectiveness of subsidies on the performance of public-private partnerships (PPPs).

Findings

According to the scenarios that are generated from the model, governments that are confronting with limited public budgets could reduce the intensity of performance incentives and increase the participation-oriented subsidy. Whilst a participation-oriented subsidy can stimulate private organisations’ willingness to participate in infrastructure PPPs, a performance-oriented subsidy is capable of facilitating the projects’ performances. Intuitively, the performance-oriented subsidy enables the private entities of PPPs to improve their efforts on the projects to realise higher profits. However, the participation-oriented subsidy is unable to affect the level of their effort spent on the projects. To satisfy both parties’ expectations in a PPP, the performance-oriented subsidy needs to be prioritised for a purpose of enabling higher quality outputs.

Practical implications

The game model developed in this study contributes to the literature by offering new insight into the underlying mechanism of governments and private entities, in terms of their decision-making for subsidy planning and contributions (i.e. resource allocation and spending) during the life-cycle of PPPs. This research enriches the government subsidy model by revealing the effects of the GFC and clarifies the impacts of two different schemes of subsidy on the performance of PPPs.

Originality/value

The government has been conventionally viewed as being omnipotent to provide PPPs with a wide range of subsidies. However, the subsidies are not unlimited, due to GFC. In addressing this void, this study has modelled the impacts of government subsidy plans with a consideration of GFC-related constraints. The combined effects of the participation- and performance-oriented subsidies on the project performance of PPPs have been examined.

Details

Journal of Engineering, Design and Technology , vol. 21 no. 5
Type: Research Article
ISSN: 1726-0531

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Article
Publication date: 1 October 2018

Hang Wu and Yang Liu

Internationalization has emerged as a vital catch-up strategy for firms in emerging markets. Although external knowledge search has been widely acknowledged as an important way…

661

Abstract

Purpose

Internationalization has emerged as a vital catch-up strategy for firms in emerging markets. Although external knowledge search has been widely acknowledged as an important way within the internationalization process, there appear to be opposing views as to whether local or international knowledge search contributes more for firms’ internationalization. This paper aims to integrate organizational ambidexterity and external knowledge search theory to define the concept of external knowledge search ambidexterity and empirically test the impact of the balance dimension of external knowledge search ambidexterity and combined dimension of external knowledge search ambidexterity on internationalization and the moderating effect of organizational slack and environmental munificence.

Design/methodology/approach

Survey.

Findings

Based on survey data of 219 Chinese manufacturing firms, the authors find that both relative balance and combined dimensions of external knowledge search ambidexterity are positively associated with internationalization. Organizational slack and environmental munificence both negatively moderate the relationship between balance dimension of external knowledge search ambidexterity and internationalization, both positively moderate the relationship between combined dimension of external knowledge search ambidexterity and internationalization.

Practical implications

It is essential for managers to take different external knowledge sources into consideration, so as to both maximize revenues and profits from advanced technological knowledge and foreign marketing knowledge in foreign markets and geographic proximity advantages in local market, while minimizing the risks of lacking of adaptive capacity for lacking of knowledge about international markets and cost of coordination and communication because of long geographical distance and cultural difference.

Originality/value

The findings help us better understand the knowledge seeking activities of emerging economy multinationals by proposing that the balance and combination of local and international knowledge search both can promote internationalization, especially on the background of China. The results also enrich the organizational ambidexterity research and extend it to external knowledge search field.

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Article
Publication date: 30 July 2024

Yuting Lv, Xing Ouyang, Yaojie Liu, Ying Tian, Rui Wang and Guijiang Wei

This paper aims to investigate the differences in hot corrosion behavior of the GTD222 superalloy and TiC/GTD222 composite in a mixed salt of 75% Na2SO4 and 25% K2SO4 at 900°C.

59

Abstract

Purpose

This paper aims to investigate the differences in hot corrosion behavior of the GTD222 superalloy and TiC/GTD222 composite in a mixed salt of 75% Na2SO4 and 25% K2SO4 at 900°C.

Design/methodology/approach

The GTD222 superalloy and TiC/GTD222 nickel-based composite were prepared using selective laser melting (SLM). Subsequently, the hot corrosion behavior of the two alloys was systematically investigated in a salt mixture consisting of 75% Na2SO4 and 25% K2SO4 (Wt.%) at 900°C.

Findings

The TiC/GTD222 composite exhibited better hot corrosion resistance compared to the GTD222 superalloy. First, the addition of alloying elements led to the formation of a protective oxide film on the TiC/GTD222 composites 20 h before hot corrosion. Second, TiC/GTD222 composite corrosion surface has a higher Ti content, after 100 h of hot corrosion, the composite corrosion surface Ti content of 10.8% is more than two times the GTD222 alloy 4% Ti. The Ti and Cr oxides are tightly bonded, effectively resisting the erosion of corrosive elements.

Originality/value

The hot corrosion behavior of GTD222 superalloy and TiC/GTD222 composites prepared by SLM in a mixed salt of 75% Na2SO4 and 25% K2SO4 was studied for the first time. This study provides insights into the design of high-temperature alloys resistant to hot corrosion.

Details

Anti-Corrosion Methods and Materials, vol. 71 no. 6
Type: Research Article
ISSN: 0003-5599

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Article
Publication date: 7 May 2021

Jie Lv, Ying Xiong and Yingjie Zheng

The purpose of this paper is to investigate the impact of the nature of firm heterogeneity and factors of the host country on the choice of entry modes in greenfield investments…

753

Abstract

Purpose

The purpose of this paper is to investigate the impact of the nature of firm heterogeneity and factors of the host country on the choice of entry modes in greenfield investments and cross-border mergers and acquisitions.

Design/methodology/approach

An empirical analysis was conducted of 450 outward foreign direct investment (OFDI) cases of Chinese-listed companies from 2001 to 2015. A regression analysis was conducted to determine the influence of the heterogeneous nature of enterprises and host country factors on the choice of entry mode.

Findings

First, the nature of a firm’s heterogeneity differs in terms of their mobile or immobile capabilities, which may affect entry strategies. Second, although Chinese multinational companies do not have a strong ownership advantage when compared with multinational companies in developed countries, they have certain marketing capabilities, such as innovations, aimed at customer needs that make it possible to implement their internationalization strategy. Third, factors such as cultural distance and investment risk of the host country significantly influence the choice of OFDI entry modes.

Originality/value

The authors discuss the mobility of a firm’s resource heterogeneity in determining Chinese firms’ entry mode choices and emphasize that Chinese marketing-intensive firms seek complementary resources from the firms of the host countries to achieve competitive advantages. The authors further divide heterogeneous enterprise resources into research and development resources and marketing resources according to the degree of international mobility and examine what kind of firm heterogeneity could help in the selection of different entry modes.

Details

Chinese Management Studies, vol. 16 no. 1
Type: Research Article
ISSN: 1750-614X

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Article
Publication date: 13 April 2020

Qun Shi, Wangda Ying, Lei Lv and Jiajun Xie

This paper aims to present an intelligent motion attitude control algorithm, which is used to solve the poor precision problems of motion-manipulation control and the problems of…

408

Abstract

Purpose

This paper aims to present an intelligent motion attitude control algorithm, which is used to solve the poor precision problems of motion-manipulation control and the problems of motion balance of humanoid robots. Aiming at the problems of a few physical training samples and low efficiency, this paper proposes an offline pre-training of the attitude controller using the identification model as a priori knowledge of online training in the real physical environment.

Design/methodology/approach

The deep reinforcement learning (DRL) of continuous motion and continuous state space is applied to motion attitude control of humanoid robots and the robot motion intelligent attitude controller is constructed. Combined with the stability analysis of the training process and control process, the stability constraints of the training process and control process are established and the correctness of the constraints is demonstrated in the experiment.

Findings

Comparing with the proportion integration differentiation (PID) controller, PID + MPC controller and MPC + DOB controller in the humanoid robots environment transition walking experiment, the standard deviation of the tracking error of robots’ upper body pitch attitude trajectory under the control of the intelligent attitude controller is reduced by 60.37 per cent, 44.17 per cent and 26.58 per cent.

Originality/value

Using an intelligent motion attitude control algorithm to deal with the strong coupling nonlinear problem in biped robots walking can simplify the control process. The offline pre-training of the attitude controller using the identification model as a priori knowledge of online training in the real physical environment makes up the problems of a few physical training samples and low efficiency. The result of using the theory described in this paper shows the performance of the motion-manipulation control precision and motion balance of humanoid robots and provides some inspiration for the application of using DRL in biped robots walking attitude control.

Details

Industrial Robot: the international journal of robotics research and application, vol. 47 no. 3
Type: Research Article
ISSN: 0143-991X

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Article
Publication date: 6 August 2018

Jie Geng, Xu Peng, Ying Li, Chuan Lv, Zili Wang and Dong Zhou

Current virtual simulation platforms provide various tools to generate non-immersive simulation processes purposefully in different domains. The generated simulation processes are…

344

Abstract

Purpose

Current virtual simulation platforms provide various tools to generate non-immersive simulation processes purposefully in different domains. The generated simulation processes are adopted for analysis, presentation, demonstration and verification. In the virtual maintenance domain, this intuitive and visual method has benefitted product maintainability design and improvement. Generating an ideal and reasonable non-immersive virtual maintenance simulation is always time-consuming because of the complicated human operations and logical relationships involved. This study aims to propose a semiautomatic approach to increase efficiency in non-immersive virtual maintenance simulation implementation.

Design/methodology/approach

The methodology analyzes the general catalogs of common maintenance tasks and explores the corresponding secondary development approaches of simulation tools that can achieve motion simulation in virtual environments, by focusing on the diversity, complexity and uncertainty in non-immersive virtual simulation process generation. Afterward, a single virtual human motion can be generated by controlling the parameters and indices of the simulation tools. Subsequently, all of the generated single motions are connected logically to simulate the entire maintenance process.

Findings

Instead of selecting various tools, such as that in a traditional method, the proposed methodology analyzes and integrates the necessary basic parameters considering the characteristics of virtual maintenance simulation for a target maintenance activity.

Originality/value

The user can control the predefined parameters to generate the simulation combining several other simple operations in virtual environments. Consequently, the methodology decreases simulation tool selection and logic consideration and increases efficiency to a certain extent in non-immersive virtual maintenance simulation generation.

Details

Assembly Automation, vol. 38 no. 3
Type: Research Article
ISSN: 0144-5154

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Article
Publication date: 8 February 2021

Dao-Jin Wang, Hong-Jiang Lv and Ying-Tang Zhou

The purpose of this paper is to elucidate how the advice-giving affects innovative capability by involving knowledge exchange and combination as a mediator and contextual…

364

Abstract

Purpose

The purpose of this paper is to elucidate how the advice-giving affects innovative capability by involving knowledge exchange and combination as a mediator and contextual ambidexterity as an important contingency.

Design/methodology/approach

Based on a survey of 96 Chinese teams, a set of hypotheses was tested using regression analyzes.

Findings

The findings showed that contextual ambidexterity moderates the indirect effect of advice-giving on innovative capability through knowledge exchange and combination. When contextual ambidexterity is high, workers engage in more knowledge exchange and combination for the team at intermediate levels of advice-giving, the indirect effect of advice-giving at low levels and at high levels exist. When contextual ambidexterity is low, there is no indirect effect of advice-giving at any level.

Practical implications

Managers should be aware of the inverted U-shaped relationship between advice-giving and innovative capability and strengthen the construction of contextual ambidexterity.

Originality/value

This paper makes up for the theoretical gap between advice-giving and innovative capability. Furthermore, it provides a theoretical reference for practitioners to improve their innovative capability.

Details

Chinese Management Studies, vol. 15 no. 2
Type: Research Article
ISSN: 1750-614X

Keywords

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