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Article
Publication date: 17 March 2022

Jo-Hui Chen and Yun-Chen Cheng

This paper aims to examine the factors influencing renewable energy output.

391

Abstract

Purpose

This paper aims to examine the factors influencing renewable energy output.

Design/methodology/approach

The panel data model was used to analyze the fixed and random effects.

Findings

The results showed that economic development, environmental-related technology patents, renewable energy consumption and the publication of papers and periodicals contributed to enhancing renewable energy production. Wind power generation’s adjustment speed is faster than that of solar power generation in the renewable energy sector. The use of renewable energy was affected by the weather and related costs.

Originality/value

Many countries choose energy with reasonable prices and stable power generation and use renewable energy as additional backup power.

Details

Studies in Economics and Finance, vol. 40 no. 1
Type: Research Article
ISSN: 1086-7376

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Article
Publication date: 10 April 2009

Lin Cheng and Meng Xiang‐feng

The purpose of this paper is to establish an appraisal system for evaluating and choosing traction battery for electric vehicle (EV) quantitatively and effectively.

567

Abstract

Purpose

The purpose of this paper is to establish an appraisal system for evaluating and choosing traction battery for electric vehicle (EV) quantitatively and effectively.

Design/methodology/approach

Traction battery always bottlenecks the development of EV. It is difficult to evaluate and choose traction battery for EV because there are many kinds of battery and each kind has many performance parameters. An estimating system for traction battery was proposed with every factor considered. Analytic hierarchy process (AHP) and fuzzy comprehensive theory are both used to evaluate program with many aims and influencing factors. It is relatively easy and exact using AHP to determine the weighting value vector of every criterion but not so exact when marking the appraisal objects. Objections can be marked more reasonably with fuzzy comprehensive theory. Both the advantages of these two theories were integrated in this paper in order to evaluate battery more effectively. It was proved effective by the application example.

Findings

An estimating system and appraisal method for traction battery.

Research limitations/implications

Weighing factors of different criteria should be determined based on the EV type and application condition.

Practical implications

Very useful method and system for EV designers to choose and evaluate traction battery.

Originality/value

The appraisal system eliminates the blindness when choosing and evaluating traction battery for EV. Both the merits of AHP and fuzzy comprehensive theory were combined for the evaluating process.

Details

Kybernetes, vol. 38 no. 3/4
Type: Research Article
ISSN: 0368-492X

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Article
Publication date: 10 April 2009

Qu Shao‐cheng, Gong mei‐jing and Wang yong‐ji

The purpose of this paper is to find an appropriate sliding mode control strategy for neutral systems with time‐delays in the presence of unmatched parameter uncertainties and…

243

Abstract

Purpose

The purpose of this paper is to find an appropriate sliding mode control strategy for neutral systems with time‐delays in the presence of unmatched parameter uncertainties and external disturbance.

Design/methodology/approach

Owing to the complexity of uncertain neutral time‐delay systems, some conclusions for system stability and stabilization are complicated non‐linear matrix inequality (NLMI). Through virtual state feedback control, a sliding mode controller is designed to guarantee state trajectories from any initial condition are attracted to the sliding mode plane in a finite time and remain there for all subsequent time, which can avoid the complicated NLMI. Furthermore, a delay‐independent sufficient condition for the design of robust stable sliding mode plane is obtained in term of LMI.

Findings

The sliding mode controller for uncertain neutral time‐delay systems is designed and a delay‐independent sufficient condition for the design of robust stable sliding mode plane is obtained.

Research limitations/implications

The main limitations are that external disturbance must meet matched condition.

Practical implications

A useful control strategy for uncertain neutral systems with time‐delays.

Originality/value

The virtual state feedback control is designed so to avoid the complicated NLMI.

Details

Kybernetes, vol. 38 no. 3/4
Type: Research Article
ISSN: 0368-492X

Keywords

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Article
Publication date: 4 December 2019

Min Li, Fangbin Xiao, Yang Cheng, Bi-Jun Xie, Chen-Yun Liu and Baoni Xu

This paper aims to attempt to explore the influence of network position on innovation performance, specifically for companies from a less-developed area in China.

456

Abstract

Purpose

This paper aims to attempt to explore the influence of network position on innovation performance, specifically for companies from a less-developed area in China.

Design/methodology/approach

The paper uses a social network analysis method based on the data of high and new tech companies from Jiangxi province, China. It relies on Ucinet 6.212 software for data processing.

Findings

The present work, on the one hand, reveals that a high and new tech company from Jiangxi province tends to achieve better innovation performances if it is in the central position of its social network. On the other hand, it indicates that the same type of company from the same area does not always accomplish better innovation performance, even it possesses more structural holes.

Originality/value

The conclusions of this paper suggest that a high and new tech company from a less-developed area in China should build up its position closer to the center when constructing a social network. Meanwhile, the company should also exert more effort into managing its networks, as only building structural holes offers little help with operations besides showing that it has a broad social network.

Details

Chinese Management Studies, vol. 14 no. 1
Type: Research Article
ISSN: 1750-614X

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Article
Publication date: 16 October 2009

Liping Zhang, Jun Xia, Xingyuan Song and Xiaofeng Cheng

With frequent floods occurring, and the fast economic development in China, attention must be paid to flood prevention, water supply, and forecasting precision. In particular…

224

Abstract

Purpose

With frequent floods occurring, and the fast economic development in China, attention must be paid to flood prevention, water supply, and forecasting precision. In particular, mid‐ and long‐term runoff prediction is being paid more and more attention by researchers, and it is also the most difficult problem to solve. The purpose of this paper is to apply chaos phase space theory to forecast river run off.

Design/methodology/approach

Because the hydrologic system is a complicated huge system, there exist high non‐linear characteristics in the space‐time change of hydrologic factors. According to theory of chaotic phase space, the paper established four models of the single‐point, multi‐point, lineal, and three‐parameter D(m,τ,k) models, they have stronger non‐linear mapping function and much more information in the time series than traditional ways.

Findings

The results of calculation show that the models are highly effective and worthy of popularization and application. It is reasonable and superior to use these models in mid‐ and long‐term hydrologic prediction.

Research limitations/implications

The method cannot reduce or eliminate the un‐prediction parts caused by the inner random factors, such as the noise information of the observed data.

Practical implications

The models are applied in the long‐term runoff prediction of Baishan reservoir.

Originality/value

The new approach of hydrology forecasting due to the theory of chaotic phase space. The paper is aimed at hydrology forecasting researches and engineers, especially those who dealt with the mid‐ and long‐term prediction.

Details

Kybernetes, vol. 38 no. 10
Type: Research Article
ISSN: 0368-492X

Keywords

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Article
Publication date: 28 November 2024

Xuefei Wang, Yuxin Liu, Yun Chen and Rongrong Zhang

This study aims to explore the influence of extra-workplace factors, specifically work−family interpersonal capitalization, on employee green behavior. Based on the conservation…

67

Abstract

Purpose

This study aims to explore the influence of extra-workplace factors, specifically work−family interpersonal capitalization, on employee green behavior. Based on the conservation of resources theory, the research sought to understand how resources gained from positive family interactions spill over into the workplace, enhancing green behavior. In addition, the study investigated the mediating role of relational energy and the moderating effects of work green climate and environmental self-accountability, providing a nuanced understanding of the mechanisms involved.

Design/methodology/approach

This study used a multiwave field study combined with an experimental study to investigate the impact of work−family interpersonal capitalization on employee green behavior. Data were collected in several phases to capture changes over time and to understand causal relationships. The multiwave design allowed for observing the dynamic interplay between family and work domains, while the experimental component provided controlled conditions to validate the findings. This approach ensured robust and comprehensive analysis, integrating both real-world and experimental data.

Findings

The study revealed that work−family interpersonal capitalization significantly enhances employee green behavior. Relational energy emerged as a crucial mediator in this relationship. Furthermore, the study found that both work green climate and environmental self-accountability positively moderated the relationship between relational energy and green behavior. Notably, the interaction of work green climate and environmental self-accountability further strengthened this relationship, ultimately influencing the indirect effect of relational energy on employee green behavior. These findings highlight the complex interplay between personal and organizational factors in promoting sustainable practices at work.

Originality/value

This study provides valuable insights into the spillover effects from family to work, emphasizing the importance of considering “nongreen” factors in understanding employee green behavior. By identifying relational energy as a key mediator and uncovering the moderating roles of work green climate and environmental self-accountability, the research contributes to the broader literature on environmental sustainability and organizational behavior. The findings suggest practical implications for organizations aiming to foster green behavior, highlighting the potential of enhancing family−work interactions and cultivating a supportive green work environment.

Details

Chinese Management Studies, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1750-614X

Keywords

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Article
Publication date: 6 August 2024

Qiushan Li, Kabilijiang Umaier, Yun Chen and Osamu Koide

Due to significant differences between urban and rural areas in terms of geographical environment, building scale, resident culture, social organization and other aspects, the…

75

Abstract

Purpose

Due to significant differences between urban and rural areas in terms of geographical environment, building scale, resident culture, social organization and other aspects, the post-disaster recovery and reconstruction models for both exhibit substantial variation. This study identifies critical strategic issues that must be addressed in housing reconstruction in the context of different social structures of urban–rural “integration” and urban–rural “dualization” to achieve the goal of “building back better” in the future.

Design/methodology/approach

By taking the experience of the 5.12 Wenchuan earthquake and the Taiwan 9.21 earthquake as a reference, this study provides a thematic analysis and systematic summary of the entire process of post-disaster housing reconstruction.

Findings

A successful housing reconstruction process should actively engage disaster-affected populations through participatory institutional design. Providing a diverse housing reconstruction model can coordinate the interests of the government, the market and affected individuals, promoting harmony of residential, productive and ecological functions. However, it can also lead to the division of existing communities.

Research limitations/implications

This research relies on existing literature, government publications, academic studies and news reports, which may carry inherent biases or omissions. Future research can benefit from conducting more extensive and long-term post-reconstruction surveys to assess the sustained impact of recovery efforts while also considering additional data sources to ensure comprehensive and unbiased analyses.

Practical implications

With the support of post-disaster reconstruction policies, diverse changes in land use can lead to urban and rural spatial pattern reform and sustainable regional development, providing a reference for formulating optimal strategies.

Social implications

This study carries significant societal implications by addressing critical strategic issues in housing reconstruction within varying urban–rural social structures. It highlights the importance of engaging affected populations through participatory design and harmonizing government, market and individual interests. The research introduces strategies for activating rural construction land quotas and creating new funding sources, promoting sustainable regional development. Its findings contribute to post-disaster reconstruction models, offering valuable insights for policymakers and stakeholders, ultimately leading to more effective and inclusive recovery efforts and benefiting disaster-prone areas worldwide.

Originality/value

This research primarily investigates the market circulation patterns of urban and rural land under different social structures, delves into the strategies for sources of housing reconstruction funding, along with an assessment of their effectiveness.

Details

Disaster Prevention and Management: An International Journal, vol. 33 no. 4
Type: Research Article
ISSN: 0965-3562

Keywords

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Article
Publication date: 10 April 2009

Qiang Luo, Dongyun Yi and Wenqiang Yang

The purpose of this paper is to answer the question that what the best shape of fuzzy sets is in fuzzy systems for function approximation which is essential in many applications…

227

Abstract

Purpose

The purpose of this paper is to answer the question that what the best shape of fuzzy sets is in fuzzy systems for function approximation which is essential in many applications of fuzzy systems.

Design/methodology/approach

The uniform approximation rates indicate the approximating capabilities of fuzzy systems for function approximation. By Fourier analysis, the uniform approximation rates are estimated for the fuzzy systems with various shapes of if‐part fuzzy sets in the case of single‐input and single‐output. Based on the approximation rates, the relationships between the approximating capabilities and the shapes of fuzzy sets are developed and compared.

Findings

The since functions as the input membership functions in fuzzy systems are proved to have the almost best approximation property in a particular class of membership functions.

Research limitations/implications

From the viewpoint of function approximation, the input membership functions are not necessarily positive in fuzzy systems.

Practical implications

For engineers, the sinc‐shaped membership function is a good choice to improve their fuzzy systems in real applications.

Originality/value

The uniform approximation rates of fuzzy systems for function approximation are estimated. Mathematically, the relationships between the approximating capabilities and the shapes of fuzzy sets are analyzed for fuzzy systems.

Details

Kybernetes, vol. 38 no. 3/4
Type: Research Article
ISSN: 0368-492X

Keywords

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Article
Publication date: 29 April 2014

Guoyun Zhou, Chia-Yun Chen, Liyi Li, Zhihua Tao, Wei He and C.P. Wong

Nickel phosphorus (Ni−P) thin-films have been electrolessly deposited in an acid-plating bath with the addition of manganese sulfate monohydrate (MSM) to achieve higher resistance…

246

Abstract

Purpose

Nickel phosphorus (Ni−P) thin-films have been electrolessly deposited in an acid-plating bath with the addition of manganese sulfate monohydrate (MSM) to achieve higher resistance for the application of embedded resistor with value beyond 10 KΩ. As this material is being used for fabricating embedded resistors under the addition of MSM, its resistance properties including effects of MSM concentration and plating time on resistances, temperature coefficient of resistance (TCR), and resistance tolerance of embedded resistor were investigated. The paper aims to discuss these issues.

Design/methodology/approach

The structure of fabricated Ni−P film was detected by means of scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The properties of substrate, including the surface morphologies, glass transition process and boundary of copper pad and substrate surface, were performed by SEM, dynamic mechanical analysis and optical microscope, respectively. The resistance tolerances of embedded resistors were elaborated from the cases of Ni−P thin-film resistance tolerance and the size effects of resistors, respectively.

Findings

The fabricated film was found to be constructed with numerous Ni−P amorphous nanoparticles, which was believed to be the reason of increasing thin-film resistance. The Ni−P thin-films presented over one magnitude order of resistance increasing in the case of MSM concentration varied from 0 to 40 g/L. For the case of TCRs, Ni−P thin-films deposited with 20 g/L MSM exhibited low TCRs of within ±100 ppm/°C Before TR at temperature elevating from 40 to 160°C, indicating that this Ni−P thin-film belongs to the constant TCR materials according to the military standard. For the tolerance of embedded resistor, the tolerance contributed by Ni−P thin-film was obtained to be 9.8 percent, whereas the geometry tolerances were in the range of 0-20 percent according to the geometries of embedded resistor.

Originality/value

For Ni−P thin-film without MSM, its low resistance with around 100 ohm/sq. limit the values of resistor few KΩ and restricted its widespread application of embedded resistor with higher resistance beyond 10 KΩ. The authors introduced MnSO4 in Ni−P electroless plating process to improve the low resistance of Ni−P thin-film. The resistance was increased over one order of magnitude after added with 40 g/L MnSO4. Due to the specific structure, as this material is being used for fabricating embedded resistors, the electrical properties and its application properties to verify its appliance in embedded resistor were systematically investigated by means of SEM, TEM, XRD characterizations, TCRs, resistance tolerance analysis, respectively.

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Article
Publication date: 10 April 2009

Xiandong Tan, Zhaoguang Hu, Baoguo Shan and Meng Li

The purpose of this paper is to establish a model to analyze the impacts of economic policy on the demand for electricity in China, including the impacts of fiscal and monetary…

544

Abstract

Purpose

The purpose of this paper is to establish a model to analyze the impacts of economic policy on the demand for electricity in China, including the impacts of fiscal and monetary policies.

Design/methodology/approach

With the development of electric reform, the impacts of economic policy on demand for electricity will be more and more obvious. It is difficult to analyze the impacts by a conventional model. CGE model is based on the theory of general equilibrium which is put forward by Walras, it describes the supplying and demanding relationship between the sectors of the economic system, a CGE model can recognize that an exogenous change (in policy or from other source) that affects any one part of the economy can produce repercussions throughout the system, it can also analyze the impacts of economic policy on electric power sector.

Findings

A CGE model and a social accounting matrix are established.

Research limitations/implications

Accessibility and availability of data are the main limitations which model will be applied.

Practical implications

A very useful model to study the impacts of economic policy on electric power sector.

Originality/value

The new method to analyze the impacts of economic policy on electric power sector in China. The paper aims at policy makers and the researchers who deal with electric power demand and supply.

Details

Kybernetes, vol. 38 no. 3/4
Type: Research Article
ISSN: 0368-492X

Keywords

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