Guangxing Ji, Zhizhu Lai, Dan Yan, Leying Wu and Zheng Wang
The purpose of this study is to assess the spatiotemporal patterns of future meteorological drought in the Yellow River Basin under different representative concentration pathway…
Abstract
Purpose
The purpose of this study is to assess the spatiotemporal patterns of future meteorological drought in the Yellow River Basin under different representative concentration pathway (RCP) scenarios.
Design/methodology/approach
Delta method is used to process the future climate data of the global climate models, then analyzed the spatiotemporal variation trend of drought in the Yellow River Basin based on standardized precipitation evaporation index (SPEI) under four RCP scenarios.
Findings
This research was funded by the National Natural Science Foundation of China (41901239), Soft Science Research Project of Henan Province (212400410077, 192400410085), the National Key Research and Development Program of China (2016YFA0602703), China Postdoctoral Science Foundation (2018M640670) and the special fund of top talents in Henan Agricultural University (30501031).
Originality/value
This study can provide support for future meteorological drought management and prevention in the Yellow River Basin and provide a theoretical basis for water resources management.
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Laurent Gerbaud, Baidy Touré, Jean‐Luc Schanen and Jean‐Pierre Carayon
The frequency simulation and optimisation of electromagnetic compatibility (EMC) filter is often computation time consuming. The purpose of this paper is to propose an approach…
Abstract
Purpose
The frequency simulation and optimisation of electromagnetic compatibility (EMC) filter is often computation time consuming. The purpose of this paper is to propose an approach for easy and fast modelling and optimization of power electronics structures.
Design/methodology/approach
The paper proposes an approach for easy and fast modelling and optimization of power electronics structures. It focuses on the EMC filter design. To achieve this task time simulation, FFT and automatic frequency modelling are combined.
Findings
An automatic frequency modelling is proposed and also gives automatically the model gradients. Therefore, the model can be used to optimize the EMC filter, but also can help in choosing its topology. Several optimization algorithms are used and compared.
Research limitations/implications
The power electronics load is supposed to be a set of predefined harmonic sources, obtained by time simulation + FFT before the optimisation process.
Practical implications
The frequency model allows for the rapid designing and comparing of several structures or modelling hypothesis with regard to the parasitic elements and circuit imperfections.
Originality/value
The frequency model is automatically generated, and sizing criteria on the component (e.g. inductors, capacitor) can be added in an analytical form, for example, to deal with volume or mass criteria.
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Jagdeep Singh and Harwinder Singh
The purpose of this paper is to review the literature and provide an overview of the history, evolution and existing research on continuous improvement (CI). It reviews a large…
Abstract
Purpose
The purpose of this paper is to review the literature and provide an overview of the history, evolution and existing research on continuous improvement (CI). It reviews a large number of research papers in this field and presents the overview of various CI implementation practices demonstrated by manufacturing organizations globally.
Design/methodology/approach
The paper systematically categorizes the published literature, analyzes and reviews it methodically.
Findings
The paper reveals the important concepts, case studies and surveys in concerned with CI methodology. The contributions of CI programmes towards improving manufacturing performance of the organizations and CI values that underlies continuous improvement have also been highlighted.
Practical implications
The literature on classification of CI has so far been very limited. The paper reviews a large number of papers in this field and presents the overview of various CI practices demonstrated by manufacturing organizations globally. Further the future implications have also been discussed for the smooth and effective implementation of CI practices in manufacturing organizations.
Originality/value
The paper contains a comprehensive listing of publications on the field in question and their classification. It will be useful to researchers, professionals and others concerned with this subject to understand the significance of CI methodology.
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Jagdeep Singh, Harwinder Singh and Amit Kumar
The purpose of this paper is to uncover the significance of green supply chain management (GSCM) to study the impact lean practices, namely, Kaizen and innovation management…
Abstract
Purpose
The purpose of this paper is to uncover the significance of green supply chain management (GSCM) to study the impact lean practices, namely, Kaizen and innovation management practices on organizational sustainability.
Design/methodology/approach
The subject of green supply chains attracts a growing interest in academic and professional literature since 1990. Questionnaire survey and structured interviews (set of questions) among the industrial professionals and academicians of northern India region have been performed to ascertain the significance of GSCM toward organizational sustainability. Structural equation modeling, Cronbach’s alpha, z-test, correlation and t-test have been used to ascertain the significance of lean practices toward sustaining organization by taking the mediating effect of GSCM.
Findings
The results signify the negative potential of combined Kaizen, innovation management and government policies on environmental thinking through supply chain. The innovation management strategies and Kaizen individually has positive influence on environment supply chain but government policies should be improved to improve the positive impact on environmental thinking through supply chain by decreasing pollution. Economic performance, environmental performance and competitive performance are significantly improved by implementing Kaizen and innovation management through GSCM.
Research limitations/implications
The research is limited to northern India. Moreover, selection of industry and academic organizations has been done on convenient sampling technique.
Originality/value
The paper demonstrates the application of lean techniques, namely, Kaizen and innovation management practices, showing how it can bring real breakthroughs in organizational sustainability through GSCM.
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This paper aims to determine whether performing an emotional intelligence (EI) intervention improves employees’ self-perceived emotional–social competencies (ESC) to achieve…
Abstract
Purpose
This paper aims to determine whether performing an emotional intelligence (EI) intervention improves employees’ self-perceived emotional–social competencies (ESC) to achieve relational outcomes in firms based in China.
Design/methodology/approach
Based on a qualitative, interpretive approach through purposive sampling, this paper explored the impacts the Strengths Deployment Inventory (SDI) 2.0 intervention might have upon Chinese employees regarding ESC and relational outcomes. Data was collected from 18 semi-structured interviews with Chinese executives and individual contributors.
Findings
The findings suggested that ESC could be developed and improved in Chinese employees. The SDI 2.0 intervention may effectively bring about positive EI shifts and relevant attitudinal and behavioral changes related to work relationships.
Practical implications
The developed ESC and relational outcomes provide practitioners with insight to better understand the role training plays in organizational effectiveness, as well as to implement the SDI 2.0 program in human resource practices of Chinese organizations to develop personnel and promote high-quality work relationships.
Originality/value
This study gains significance by highlighting the effectiveness of the SDI 2.0 intervention in enhancing respondents’ ESC with relational outcomes from the perspectives of Chinese firms. Thus, supporting the effectiveness of EI training in the Chinese workplace and introducing the EI training literature the SDI 2.0 tool.
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Shu Yi, Lin Xiao, Yong Zhang, Dujuan Duan and Maksim G. Blokhin
This paper describes the organic geochemical characteristics and their roles on barium enrichment in the No. 2 Coal from Huanglong Jurassic Coalfield, China. A total of 18 bench…
Abstract
This paper describes the organic geochemical characteristics and their roles on barium enrichment in the No. 2 Coal from Huanglong Jurassic Coalfield, China. A total of 18 bench samples were taken from Huangling Mine 2. The average content of barium (3701 mg/kg) was about 23 times higher than that of common world coals. Terrestrial higher plants were the main coal-forming parent material. Relying on the parameters of OEP, Pr/Ph and so on, there is little correlation between organic geochemical characteristics and barium enrichment. Therefore, organic material has little influence on the process of coal-forming and the enrichment of barium.
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Prakoso Bhairawa Putera, Ida Widianingsih, Suryanto Suryanto, Sinta Ningrum and Yan Rianto
This paper aims to discuss the emergence of science, technology and innovation (STI) institutions in Indonesia during the Dutch East Indies colonial period in 1778–1941. The…
Abstract
Purpose
This paper aims to discuss the emergence of science, technology and innovation (STI) institutions in Indonesia during the Dutch East Indies colonial period in 1778–1941. The emergence of these institutions reflected the dynamics of science and technology development and innovation in that era.
Design/methodology/approach
This paper navigates a historiographical approach. Data collection techniques use “secondary data research,” with archival investigation published by official sources in the Dutch East Indies in the 18th and 19th centuries as well as other reference sources, and data analysis techniques use “supplementary analysis.”
Findings
This research indicates that the STI institution during the Dutch East Indies colonial period was formed to maximize the natural resources of the Dutch East Indies. The STI institution at that time was constructed as part of Buitenzorg’s Plantentuin the lands, plantations, solutions for health, astronomy, geology, forestry and culture.
Research limitations/implications
The limitations of this research, as well as future research. Relying too much on “secondary data” is a limitation of this study. Therefore, it is necessary to collect primary data through in-depth interviews with historical scientists studying STIs in Indonesia in future research.
Originality/value
This study, to the best of the authors’ knowledge, considered the first study, reveals the dynamics of STI in Indonesia during the Dutch East Indies colonial era by examining the dynamics of the institution. In addition, this study succeeded in dividing five institutional STI clusters in the Dutch East Indies Colonial period 1778–1941, namely, units/institutions formed as part of Planuntungin te Buitenzorg; units/institutions formed based on plantations, initiated by private plantations to find solutions to the pests and diseases that attack their crops; units/institutions formed to seek solutions in the health sector; units/institutions formed based on astronomy, geology and forestry; and units/ institutions regarded as scientific councils/associations.
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Kanghao Yan and Dan Huang
In high-pressure pumps, due to the interaction of asperities on the upper and lower surfaces, the piston–cylinder interface suffers severe lubrication and sealing problems during…
Abstract
Purpose
In high-pressure pumps, due to the interaction of asperities on the upper and lower surfaces, the piston–cylinder interface suffers severe lubrication and sealing problems during mixed lubrication. This study aims to establish a mixed thermo-elastohydrodynamic (EHD) model for the lubrication gap to determine how working conditions affect the lubricating characteristics and sealing performance of the interface.
Design/methodology/approach
A mixed thermo-EHD lubrication model is established to investigate the lubricating characteristics and sealing performance of the interface between the piston and cylinder. The model considers piston tilting, thermal effect, surface roughness and bushing deformation. The interface lubricating characteristics and sealing performance under different working conditions are calculated by the proposed numerical model.
Findings
A higher inlet pressure contributes to an increase in the minimum film thickness. Increased shaft speed can significantly reduce the minimum film thickness, resulting in severe wear. Compared to roughness, the impact of the thermal effect on the interface sealing performance is more significant.
Originality/value
The proposed lubrication model in this study offers a theoretical framework to evaluate the lubricating characteristics and sealing performance at the lubrication gap. Furthermore, the results provide references for properly selecting piston-cylinder surface processing parameters.
Peer review
The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-03-2023-0072/
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Kanghao Yan and Dan Huang
Multitilting-pad journal bearings (MTPJBs) used in large-scale hydraulic turbines often suffer from complex operating conditions, which greatly influence the overall performance…
Abstract
Purpose
Multitilting-pad journal bearings (MTPJBs) used in large-scale hydraulic turbines often suffer from complex operating conditions, which greatly influence the overall performance of the rotating machine. The purpose of this study is to establish a thermal-elastic-hydrodynamic lubrication model for MTPJBs that can predict the static and dynamic characteristics of high-speed and heavy-load MTPJBs under different operating conditions.
Design/methodology/approach
A thermo-elasto-hydrodynamic lubrication model considering the turbulence effect is proposed for high-speed and heavy-load TPJBs, which is solved using the coupled finite difference method and finite element method. The model considered the turbulence effect, thermal energy diffusion, viscosity–temperature–pressure relationship and elastic deformation of the pads. The influences of the operating conditions on static and dynamic characteristics of tilting pad journal bearings were analyzed in depth.
Findings
The operating conditions have a strong effect on the static properties of the bearings. The dynamic characteristics of the TPJB were the most influenced by the shaft speed. The effects of the load direction on the dynamic properties of the TPJB were much stronger than those of the static characteristics.
Originality/value
This study used analytical methods and models to provide theoretical guidance for evaluating lubricating characteristics, assembling conditions and overall health.