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1 – 10 of 16Haixin Liu, Xinxia Liu, Yuling Zhao, Hefeng Wang and Dongli Wang
This study aims to analyze the changes in the ecosystem service value (ESV) in response to land use and contribute significantly to ecological construction and sustainable…
Abstract
Purpose
This study aims to analyze the changes in the ecosystem service value (ESV) in response to land use and contribute significantly to ecological construction and sustainable development.
Design/methodology/approach
The present study was conducted in the upper Zhanghe River region based on the moderate-resolution imaging spectroradiometer Land Cover Type product MCD12Q1 by using geographic information system (GIS) methods to process and re-classify the land-use data and using the Chinese ESV equivalent weight factors to investigate changes in land use and resulting changes in ESV between 2001 and 2013.
Findings
The results showed significant fluctuations in ESV between 2001 and 2013: there was a decline in ESV from 2001 to 2004, followed by a gradual rise after 2004, and the overall ESV exceeded 2001 levels by the end of 2013. However, the pattern of ESV change differed across geographic locations, and each administrative region contributed differently to the overall trend. The analysis confirmed that the land-use change was closely related to the change in its ESV, and the coefficients of sensitivity of ESV for all types of land use were less than one, indicating that the coefficient value of ESV lacked elasticity.
Research limitations/implications
Therefore, to promote sustainable development in the upper Zhanghe River region, ESV should be taken into consideration when planning land use, especially for land types with high ESV, such as water bodies and forestlands.
Originality/value
The results can provide scientific support for the sustainable development of the ecological, economic and societal aspects of the upper Zhanghe River region. In addition, county-level administrative divisions were set as the basic research unit for the analysis and discussion of ESV changes in each unit within the research period and its impact on the overall ESV of the entire area to lay down a foundation for the analysis of the ESV spatial dynamic distribution in the entire research site.
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Hefeng Wang, Yuan Cao, Xinxia Liu and Yantao Yang
Using Shanghai as an example, the purpose of this paper is to perform grade evaluation and zoning for different land use spaces by GIS by identifying the major restrictive factors…
Abstract
Purpose
Using Shanghai as an example, the purpose of this paper is to perform grade evaluation and zoning for different land use spaces by GIS by identifying the major restrictive factors in current socio-economic development.
Design/methodology/approach
Based on short plate theory, 11 major restrictive indicators that will restrict socio-economic development in Shanghai are identified, and urban land is divided into four subspaces and the restrictive grade evaluation of urban land subspace is achieved with GIS spatial analysis; then, land development zoning is processed according to the results of the evaluation.
Findings
In all, 11 major restrictive indicators that will restrict socio-economic development in Shanghai are identified. The restrictive grades of the agricultural production, urban construction and ecological protection subspaces are mainly common, weak and weaker, and the relatively strong restrictive grade of industrial development subspace is mainly concentrated in the more developed industrial districts (counties). The areas of the common and good regions of constructive development and ecological development zones account for 87.4 and 98.3 per cent of each total area, respectively, and urban land still has significant development potential in Shanghai.
Originality/value
This paper proposes various urban land space evaluations and zoning strategies based on restrictive indicators and perspectives, enriching the ideas and methods of urban land use evaluation.
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Xinxia Liu, Anbing Zhang, Hefeng Wang and Haixin Liu
This paper aims to develope an integrated image processing method to investigate the spatiotemporal dynamics of Phragmites invasion in the Detroit River International Wildlife…
Abstract
Purpose
This paper aims to develope an integrated image processing method to investigate the spatiotemporal dynamics of Phragmites invasion in the Detroit River International Wildlife Refuge on the basis of publically available sources.
Design/methodology/approach
This new approach integrates the standard time-series analysis of Landsat images with USDA National Agriculture Imagery Program (NAIP) imagery and USGS Digital Orthophoto Quarter Quads (DOQQ) datasets, which are either classified or manually interpreted with the aid of ground control points. Three different types of spatiotemporal dimensions are designed to test this integrated time-series image analysis method: the selected sites and selected time-points with high spatial resolution and sufficient validation data points, the intermediate time-series with continued yearly images and periodical validation data, and the long time-series with periodical images without enough validation data. The support vector machine (SVM) method was used to classify the Landast TM sequence images to detect the Phragmites invasion.
Findings
The habitat map produced by NAIP images and field collection data shows that the total Phragmites area of DRIWR in 2010 is 4221.87 acres without treatment areas and similar with the removed non-vegetation method. It is confirmed that the pre-classification method can obtain more accurate results.
Originality value
The test results show that the Landsat-5 data can be used for long-term environmental management and monitoring of Phragmites invasion and can achieve rehabilitation of invasion areas.
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Lina Si, Yan Pan, Xiaoqing Zhang, Jie Wang, Jia Yao, Yanjie Wang, Fengbin Liu and Feng He
This paper aims to clarify the effects of metallic nanoparticles (NPs) additives and room temperature ionic liquids (ILs) on the tribological performance of electric contacts.
Abstract
Purpose
This paper aims to clarify the effects of metallic nanoparticles (NPs) additives and room temperature ionic liquids (ILs) on the tribological performance of electric contacts.
Design/methodology/approach
Tribological properties of copper (Cu) and silver (Ag) NPs as lubricant additives in different lubricants of ILs or polyalphaolefin (PAO) oils under applied electric currents were investigated. After tribological tests, morphologies of worn surfaces were observed; meanwhile, lubrication and anti-wear properties were analyzed.
Findings
The mixture solution of the IL and Cu NPs showed desirable lubrication and anti-wear properties due to the reduction of electrocorrosion and the enhancement of rolling effects of particles in the contact region. The anti-wear performance of Cu NPs is better than that of Ag NPs due to the difference in the particle size. The PAO oil with the Cu NPs additives showed poor lubrication properties due to the low solubility of the particles in the oil. When the direction of applied current was changed, the friction of the lubricant with better conductivity was more stable in the variation trend.
Originality/value
This paper begins with a study of tribological properties of Cu and Ag NPs as lubricant additives in different lubricants of IL or PAO oils under applied electric currents. The authors then propose several methods and possible solutions which could be implemented to improve the tribological performance of electric contacts.
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Xianguo Hu, Yourong Wang and Hefeng Jing
The purpose of this paper is to develop a new oil‐in‐water (O/W) emulsion used for alpha phase brass, which can increase the antiwear and anti‐galling abilities of the rollers…
Abstract
Purpose
The purpose of this paper is to develop a new oil‐in‐water (O/W) emulsion used for alpha phase brass, which can increase the antiwear and anti‐galling abilities of the rollers, and improve the surface quality of the rolled brass sheet. The aim is to evaluate the tribological performance of new kind of O/W emulsion for the hot rolling of alpha brass, which provides the fundamental information for the selecting of new chemical group, and to understand the lubrication mechanism of the used rolling emulsion and to correlate the laboratory findings with those of industrial rolling of alpha phase brass.
Design/methodology/approach
According to the hydrophile‐lipophile balance theory and the evaluation results of friction, wear and lubrication using a four‐ball tribometer, a novel O/W emulsion was developed for the hot rolling process of CuZn32(ASTM C26200) and CuZn30(ASTM C26000) alloys by controlling the composition of the emulsion, such as emulsifying, antiwear, extreme pressure, antirust and so on. By scanning electron microscope (SEM), energy‐dispersive X‐ray (EDX), and roughness profile the tribological mechanism were studied.
Findings
The production result proved that it was easy to control the accuracy and size of the brass sheet because of the emulsion‐jet to the roller surface directly and in succession. Polyol with hydroxyl group is found to provide better lubrication and lower coefficient of friction. The actual hot rolling results proved that it was easy to control the accuracy and size of the brass sheet with the emulsion jet. The morphologies and roughness profile of the copper sheet surface were observed and measured by SEM and topographic meter under different lubricant conditions. The in situ results supported the selection of compositions of O/W emulsion. The suitable temperature of feed emulsion is over 20°C.
Research limitations/implications
The tribological mechanism of friction modified emulsion is not still clear. The thermal mechanical properties of rollers under this kind of emulsion are also worth studying in the future.
Practical implications
Understanding the tribological behaviour of O/W emulsion, will be useful for emulsion chemists, tribologists and rolling mill users.
Originality/value
The current study shows new compositions of O/W emulsion used for hot rolling of alpha phase brass.
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Zhong Ning, Yangbo Chen and Yalin Luo
Anhui Winall Hi-Tech Seed Co., Ltd., a high-tech seed enterprise integrating crop seed research, production, processing and marketing at home and abroad, is the first seed company…
Abstract
Anhui Winall Hi-Tech Seed Co., Ltd., a high-tech seed enterprise integrating crop seed research, production, processing and marketing at home and abroad, is the first seed company listed on GEM in China. Its main business is research and development, breeding and marketing of seeds of hybrid rice, edible rape, cotton, melon and vegetable, with hybrid rice as its leading product. In terms of business model, Winall Hi-tech is engaged in procurement, production, sales and promotion of modified varieties and after-sales service. However, Winall Hi-tech also has to face a few potential problems.
Paijie Wan, Feng He, Hongjie Zhang and Rengaowa Wu
This study examines the impact of industry-university-research (IUR) cooperation on the financial performance of pharmaceutical enterprises in China. The current literature has…
Abstract
Purpose
This study examines the impact of industry-university-research (IUR) cooperation on the financial performance of pharmaceutical enterprises in China. The current literature has primarily focused on the effects of IUR cooperation on innovative performance, often overlooking its financial implications. This research aims to address this gap by analyzing how such collaborations affect financial outcomes.
Design/methodology/approach
Using a difference-in-differences (DID) approach, this study analyzes data from publicly listed Chinese pharmaceutical companies between 2011 and 2022. The analysis includes robustness checks and heterogeneity analysis to validate the findings.
Findings
Empirical results indicate that IUR cooperation significantly improves the financial performance of pharmaceutical enterprises. Firms engaged in IUR collaborations exhibit a notable improvement in return on assets (ROA) and return on equity (ROE). The research findings confirm that absorptive capacity (internal factors) and the external knowledge resource base (external factors) enhance the positive impact of IUR collaboration on the financial performance of pharmaceutical enterprises. Additionally, the heterogeneity analysis based on regional levels of intellectual property protection demonstrates a stronger positive influence of IUR cooperation on the financial performance of pharmaceutical enterprises in regions with greater levels of intellectual property protection.
Originality/value
This study contributes to the understanding of the financial benefits of IUR cooperation in the biopharmaceutical sector. By highlighting the significance of absorptive capacity, external knowledge resource base and regional intellectual property protection, this study offers valuable insights for policymakers and business leaders aiming to cultivate effective industry–academia collaborations.
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Anitha Moosa and Feng He
This paper aims to explore how environmental management practices impact different dimensions of corporate sustainability. It also explores the mediating impact of environmental…
Abstract
Purpose
This paper aims to explore how environmental management practices impact different dimensions of corporate sustainability. It also explores the mediating impact of environmental regulation and reports on the relationship between environmental management practice and corporate sustainability.
Design/methodology/approach
A brief focus group discussion and a preliminary test were conducted through a focused group meeting with industry experts before data were collected from senior management of 116 registered operations in the hospitality and tourism industry in the Maldives. To analyse the data, a mediation model is proposed and tested using partial least squares structural equation modelling.
Findings
Results showed that environmental management practices have a direct and positive effect on corporate sustainability. Furthermore, environmental regulation and reporting positively mediate the effect of environmental management practices on corporate sustainability. Among the sustainability dimensions, it is important to note that the social sustainability aspect has the highest impact, followed by the economic and environmental aspects of corporate sustainability.
Practical implications
Findings provide empirical evidence in understanding achieving corporate sustainability through environmental management practices. The study is practical for stakeholders and policymakers to follow through with the environmental regulations and be transparent on environmental reporting measures that impact overall sustainability.
Originality/value
This study serves as noteworthy research for stakeholders to evaluate against regulatory and reporting requirements for businesses they invest in the future. It adds value to the literature and attempts to advance environmental management and sustainability research in the context of small island developing states.
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Abstract
Purpose
The performance of oil-filled pressure cores is very much affected by the corrugated diaphragm and the oil filling volume. The purpose of this paper is to show the effects of different corrugated diaphragms, different oil filling volumes and different treatments of the corrugated diaphragms on the performance of pressure sensors.
Design/methodology/approach
Pressure-sensitive cores with different diaphragm diameters, different diaphragm ripple numbers and different oil filling volumes are produced, and thermal cycling is introduced to improve the diaphragm performance, and finally the performance of each pressure-sensitive core is tested and the test data are analyzed and compared.
Findings
The experimental results show that the larger the diameter of the corrugated diaphragm used for encapsulation, the better the performance. For pressure-sensitive cores using smaller diameter corrugated diaphragms, the performance of one corrugation is better than that of two corrugations. When the number of corrugations and the diameter are the same size, the performance of the outer ring of the diaphragm with concave corrugations is better than that with convex corrugations. At the same time, the diaphragm after thermal cycling treatment and appropriate reduction of encapsulated oil filling can improve the performance of the pressure-sensitive core.
Originality/value
By exploring the effects of corrugated diaphragm and oil filling volume on the performance of oil-filled pressure cores, the design of oil-filled pressure sensors can be guided to improve sensor performance.
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Shen Lei, Cuijuan Qin, Muhammad Ali, Susan Freeman and Zheng Shi-Jie
The purpose of this study is to develop and test a multilevel conceptual model which explains how authentic leadership (AL), through an innovative team atmosphere and promotion of…
Abstract
Purpose
The purpose of this study is to develop and test a multilevel conceptual model which explains how authentic leadership (AL), through an innovative team atmosphere and promotion of self-efficacy, influences creativity. The study delineates two pathways from AL to creativity. The first pathway is an indirect effect through an innovative atmosphere at the team level and self-efficacy at the individual level, while the second pathway focuses on the moderating effect of AL between self-efficacy and individual creativity.
Design/methodology/approach
Data were collected from 58 team leaders and 283 employees in a creative industry park in the Yangtze River Delta region from China. Path analysis was conducted to test the proposed hypotheses using the statistical package M-plus (v. 7).
Findings
The results reveal that AL is an important antecedent of creativity. Furthermore, an innovation-based atmosphere at the team level mediates the theorized relationship between AL and individual creativity. However, creative self-efficacy at the individual level does not mediate this relationship. Finally, the study found that AL moderates the relationship between creative self-efficacy and individual creativity.
Originality/value
The implications of this study highlight important considerations for enterprises in creative industry parks within and beyond China. This study provides industry leaders with a clearer and more insightful and coherent means of understanding the mediating mechanism between AL and creativity, and the moderating effects of AL between individual self-efficacy and creativity through a new linkage model.
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