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1 – 10 of 740Bifeng Zhu, Gebing Liu and Jing Feng
This paper aims to make a comparative study on the latest version of green campus evaluation standard between China and America: Green Campus Evaluation Standard (GB/T51356-2019…
Abstract
Purpose
This paper aims to make a comparative study on the latest version of green campus evaluation standard between China and America: Green Campus Evaluation Standard (GB/T51356-2019) and the sustainability tracking, assessment and rating system (STARS 2.2). The differences of evaluation methods and contents are analyzed and their respective characteristics and advantages are sorted out, so as to promote the development of sustainable campus evaluation standards.
Design/methodology/approach
The research mainly adopts the method of comparative study, which is carried out from three dimensions, namely, the related policies development of campus construction and world university sustainable rankings; the content of evaluation standards (including evaluation methods and evaluation categories and scores); the characteristics and current application of standards.
Findings
There are great differences between the evaluation standards of China and America in organization and participation mode, evaluation method and content. Public engagement, energy and campus engagement are the hot spots. Buildings, energy, food and dining and investment and finance will become the focus of sustainable campus in the future. Specific optimization strategies of key points, evaluation method and content and organization and participation mode of Chinese standard are put forward.
Practical implications
This paper clarifies the advantages and disadvantages of the current global sustainable campus, and provides the basis for the next stage of construction policy. At the same time, it is helpful for all countries, especially China, to formulate construction guidelines that not only meet their own actual needs but also conform to the trend of global sustainable campus development.
Social implications
The connotation of sustainable campus is enriched, and the evaluation standards of sustainable campus are improved. The development of sustainable campus is promoted, so as to realize the sustainable development goals.
Originality/value
This research expands the scope of the study to the whole campus, rather than just one aspect of campus buildings. It compares the evaluation standard of green campus in China with STARS in the USA, and no longer compares leadership in energy and environmental design for schools. It discusses the campus building’s energy conservation while paying attention to the campus green consciousness, green management and green planning. Based on the relevant data currently used by STARS in the global evaluation, this paper analyzes the hot spots and shortcomings of the current global sustainable campus construction and puts forward some optimization suggestions for China’s green campus evaluation system.
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Jin Zhang, Xiaoming Qian and Jing Feng
Under the global climate change, carbon footprint has become a hot issue at home and abroad. However, there is no consensus on the concept, measurement and application of carbon…
Abstract
Purpose
Under the global climate change, carbon footprint has become a hot issue at home and abroad. However, there is no consensus on the concept, measurement and application of carbon footprint.
Design/methodology/approach
In this paper, first, the concept and connotation of carbon footprint are reviewed; then, different methods of carbon footprint measurement are compared, and it is found that “bottom-up” life cycle assessment and “top-down” input–output analysis are applicable to different research scales.
Findings
Finally, the problems in the process of carbon footprint assessment in textile industry are analyzed and further research directions are proposed.
Originality/value
Analyzed and further research directions are proposed.
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Jian Wang, Jing Feng Shen and Ya Wen Fan
The spherical hybrid sliding bearings (SHSBs) can be used in ultra-precision and heavy-duty machine tools. However, there is little related research for these bearings. The…
Abstract
Purpose
The spherical hybrid sliding bearings (SHSBs) can be used in ultra-precision and heavy-duty machine tools. However, there is little related research for these bearings. The purpose of this study is to investigate the static characteristics and effect factors affecting SHSBs by fluid lubrication.
Design/methodology/approach
Based on the theories of fluid lubrication, the Reynolds equation of general Newtonian fluid is derived to obtain the steady-state lubrication equation. The system is solved by the finite difference method and the relaxation iterative method on the staggered grid to obtain the thickness and the pressure distribution of the oil film. The radial and axial load capacities of SHSBs are determined by the pressure field integration over the spherical surface.
Findings
The results show that the parameters such as oil supply pressure, bearing clearance, eccentricity ratio, rotating speed and orifices’ number affecting the static characteristics of bearings are significant and the cross-coupling effect exists.
Originality/value
The lubrication model of SHSB is established to analyze the pressure distribution with a variety of oil film thickness. The laws of oil supply pressure, bearing clearance, eccentricity ratio, rotating speed and orifices’ number on the load capacities are researched.
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Feng Jing, Rohaslinda Ramele Ramli and Na'asah Nasrudin
This study discusses the protection of traditional villages and understand the role, policy environment and characteristics of traditional village protection. This study also…
Abstract
Purpose
This study discusses the protection of traditional villages and understand the role, policy environment and characteristics of traditional village protection. This study also constructs an analytical framework of “historical timing - policy orientation” to study the development process and policy evolution of traditional village protection in China.
Design/methodology/approach
This study selects the policy documents related to traditional village protection since 1980 as the research samples to explore the origin and evolution of traditional village protection in China. Then, the paper systematically combs the temporal evolution of the policy theme and orientation at each stage, which would provide a reference direction for the protection and development of traditional villages.
Findings
The interpretation of traditional village protection and its institutional background can be divided into three stages: relying on the protection system of historical and cultural towns and villages (1982–2012) and the stage of construction and improvement of traditional villages protection system (2012–2017). After 2017, traditional village protection entered a new rural revitalization journey.
Research limitations/implications
This study is limited to: documents issued from 1982 to the end of 2022; Central Committee of the Communist Party of China, the State Council, and central ministries and administrations directly governing the protection of traditional villages; policies that can directly reflect the central government’s attitude towards protecting traditional villages; and excluding the documents for some particular regions and particular problems.
Originality/value
This study fulfills as the guidance of traditional village protection and development in different periods.
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Chanmi Hwang, Byoungho Jin, Linfeng Song and Jing Feng
The purpose of this paper is to examine the factors that influence older adults' intention to use virtual fitting room technology during the COVID-19 pandemic based on the…
Abstract
Purpose
The purpose of this paper is to examine the factors that influence older adults' intention to use virtual fitting room technology during the COVID-19 pandemic based on the extended technology acceptance model (TAM).
Design/methodology/approach
An online survey was conducted with a sample of older adults from 60 to 90 years old (n = 819). A structural equation modeling was conducted to test a proposed research model.
Findings
The results revealed that older adults' behavioral intentions were positively influenced by perceived usefulness and ease of use, and fear of infection during the pandemic was significantly related to the perceived usefulness. Fit concern was not significantly related to perceived usefulness of virtual fitting room technology.
Originality
This research extends the TAM by adding antecedents to perceived usefulness in explaining older adults' adoption of virtual fitting technology.
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Jing-feng Wang, Hai-Tao Wang, Wei-Wei Shi and Hong-Yu Sheng
This paper aims to obtain fire resistance of semi-rigid joints for concrete-filled steel tubular (CFST) composite frames and temperature filed distribution of composite joints in…
Abstract
Purpose
This paper aims to obtain fire resistance of semi-rigid joints for concrete-filled steel tubular (CFST) composite frames and temperature filed distribution of composite joints in fire.
Design/methodology/approach
The temperature filed model of semi-rigid joints to CFST columns with slabs was made by using ABAQUS finite element (FE) software, in considering temperature heating-up stage of fire modelling. The effects of composite slab, fire type and construction location were discussed, and the model was verified by the test results. The temperature distribution of composite joint under three-side or four-side fire condition was studied by the sequentially coupled thermal analysis method. The temperature versus time curves and temperature distribution of various construction and location were analyzed.
Findings
The paper provides FE analysis and numerical simulation on temperature field of semi-rigid joints for CFST composite frames in fire. The effects of composite slab, fire type and construction location were discussed, and the model was verified by the test results. It suggests that the temperature distribution of composite joint in three- or four-side fire condition showed a different development trend.
Research limitations/implications
Because of the chosen FE analysis approach, the research results may lack generalizability. Therefore, researchers are encouraged to test the proposed propositions further.
Practical implications
The research results will become the scientific foundation of mechanical behavior and design method of semi-rigid CFST composite frames in fire.
Originality/value
This paper fulfils an identified need to study the temperature field distribution of the semi-rigid joints to CFST columns and investigate the mechanical behavior of the semi-rigid CFST joints in fire.
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Fenwick Feng Jing, Adrian Wilkinson, Paula K. Mowbray, Maria Khan and Huanpeng Zhang
The aim of this study is to explore and unpack the notion of lateral voice within the context of a Chinese hospital.
Abstract
Purpose
The aim of this study is to explore and unpack the notion of lateral voice within the context of a Chinese hospital.
Design/methodology/approach
A qualitative design was used, involving interviews of 24 medical personnel from a public hospital in mainland China. This included two focus groups (eight participants each) of physicians and nurses, and eight individual interviews with managers, including a chief nurse and directors of the medical centre.
Findings
The findings reveal that in top-down contexts with a respect for hierarchy, direct and vertical voice is discouraged but lateral voice fills this gap and can lead in some circumstances to a pathway to collective vertical voice. Interestingly, the study finds that fear of damaging relationships with peers may also discourage lateral voice in some cases, leading to silence altogether. Contradictory lateral voice outcomes arising from employees working within this context are discussed.
Originality/value
The study makes an original contribution to voice literature through exploring an understudied voice target, that is, voicing to peers. In doing so, the study demonstrates the importance of lateral voice as an important component of voice behaviour.
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Qian Hu, Jing Liu and Feng Huang
The purpose of this paper was to clarify the influence of H2PO4-, HCO3-, pH increase and phosphate coating on corrosion rate and localized corrosion tendency of AZ31 magnesium…
Abstract
Purpose
The purpose of this paper was to clarify the influence of H2PO4-, HCO3-, pH increase and phosphate coating on corrosion rate and localized corrosion tendency of AZ31 magnesium alloy.
Design/methodology/approach
The corrosion behavior of AZ31 magnesium alloy in physiological environments was investigated by hydrogen evolution collection measurements, electrochemical techniques and by use of a three-dimensional digital microscope.
Findings
H2PO4- and HCO3- have corrosion inhibition effects on AZ31 magnesium alloy in normal saline solutions. After immersing for 54 h, the surface undulations decrease from 100 to about 60 μm and 45 μm. The average corrosion rate decreased with increasing pH value. The localized corrosion tendency, however, increased significantly. CaHPO4·2H2O [dicalcium phosphate dehydrate (DCPD)] coating could decrease the initial icorr of AZ31 substrate in Hank’s solution. With partial dissolution of the coating, localized corrosion was readily evident on the AZ31 substrate surface, and a large corrosion pit with depth of over 350 μm appeared. The combined effect of the presence of inhibited ions, the increase in pH during corrosion process and the DCPD coating caused the decrease in the average corrosion rate while enhancing the localized corrosion tendency, resulting in the observed localized attack.
Originality/value
The paper provides an essential insight into the localized corrosion mechanism of AZ31 magnesium alloy in physiological environments.
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Jianjun Zhang, Qibo Ni, Jing Wang and Feng Guo
Vibration exists widely in all machineries working under high speed. The unpredictability of vibration and the change of the relative surface speed may result in difficulties in…
Abstract
Purpose
Vibration exists widely in all machineries working under high speed. The unpredictability of vibration and the change of the relative surface speed may result in difficulties in the elastohydrodynamic lubrication (EHL) analysis. By far, few studies on EHL relating to vibration have been published. The purpose of the present study is to investigate the effect of the vertical vibrations and the influence of temperature on the thermal EHL contacts.
Design/methodology/approach
The lubricant was assumed to be Newtonian fluid. The time-dependent numerical solutions were achieved instant after instant in each period of the vibration. At each instant, the pressure field was solved with a multi-level technique, the surface deformation was solved with a multi-level multi-integration method and the temperature filed was solved with a finite different scheme through a sweeping progress. The periodic error was checked at each end of the vibration period until the responses of pressure, film thickness and temperature were all periodic functions with the frequency of the roller’s vibrations.
Findings
The results reveal that normal vibration produces little drastic change of pressure, film thickness and temperature in EHL. Under some conditions, the vibrations of the roller can produce transient dimples within the contact conjunction. It is also showed that the lubrication in the same sliding is better than the opposite sliding.
Research limitations/implications
For the unpredictability of vibration, it is not easy to do the experiment to realize a real comparison with numerical results. The reach does not show any verification and consider the effect of non-Newtonian fluid.
Originality/value
The effect of the vertical vibrations on the thermal EHL point contact hast been studied. The effects of both the amplitude and the frequency on the predicted load-carrying capacity, minimum film thickness, center pressure and center temperature and the coefficient of friction were investigated. The role of the thermal effect was given.
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Heyong Wang, Long Gu and Ming Hong
This paper aims to provide a reference for the development of digital transformation from the perspective of manufacturing process links.
Abstract
Purpose
This paper aims to provide a reference for the development of digital transformation from the perspective of manufacturing process links.
Design/methodology/approach
This paper applies canonical correlation analysis based on digital technology patents in the key links of manufacturing industries (product design, procurement, product manufacturing, warehousing and transportation, and wholesale and retail) and the related indicators of economic benefits of regions in China.
Findings
(1) The degree of digitalization of manufacturing process links is significantly correlated with economic benefits. (2) The improvement of the degree of digitalization in the “product design” link, the “warehousing and transportation” link, the “product manufacturing” link and the “wholesale and retail” link has significant impacts on the economic benefits of manufacturing industry. (3) The digital degree of the “procurement” link has no obvious influence on the economic benefits of manufacturing industry.
Practical implications
The research results can provide reference for the formulation and implementation of micro policies. The strategy of improving the level of digital transformation of key links of manufacturing industry is put forward to better promote both the digital transformation of manufacturing industry and economic development.
Originality/value
This paper innovatively studies the relationship between digitalization of manufacturing process links and economic benefits. The findings can provide theoretical and empirical support for the digital transformation of China's manufacturing industry and high-quality development of economy.
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