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1 – 10 of 25Yang Liu, Jialing Wang, Huayang Cai, Yawei Shao, Zhengyi Xu, Yanqiu Wang and Junyi Wang
Epoxy zinc-rich coatings are widely used in harsh environments because of the long-lasting cathodic protection of steel surfaces. The purpose of this paper is to use flake zinc…
Abstract
Purpose
Epoxy zinc-rich coatings are widely used in harsh environments because of the long-lasting cathodic protection of steel surfaces. The purpose of this paper is to use flake zinc powder instead of the commonly used spherical zinc powder to reduce the zinc powder content.
Design/methodology/approach
In this paper, the authors have prepared an anticorrosive zinc-rich coating using a flake zinc powder instead of the conventional spherical zinc powder. The optimal dispersion of scaly zinc powder in zinc-rich coatings has been explored by looking at the surface and cross-sectional morphology and studying the cathodic protection time of the coating.
Findings
The final epoxy zinc-rich coating with 35 Wt.% flake zinc powder content was prepared using sand-milling dispersions. It has a similar cathodic protection time and salt spray resistance as the 60 Wt.% spherical zinc-rich coating, with a higher low-frequency impedance modulus value.
Originality/value
This study uses flake zinc powder instead of the traditional spherical zinc powder. This reduces the amount of zinc powder in the coating and improves the corrosion resistance of the coating.
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Yang Liu, Qian Zhang, Jialing Wang, Yawei Shao, Zhengyi Xu, Yanqiu Wang and Junyi Wang
The purpose of this paper is to enhance the compatibility of titanium dioxide in epoxy resins and thus the corrosion resistance of the coatings.
Abstract
Purpose
The purpose of this paper is to enhance the compatibility of titanium dioxide in epoxy resins and thus the corrosion resistance of the coatings.
Design/methodology/approach
In this work, TiO2 was modified by the mechanochemistry method where mechanical energy was combined with thermal energy to complete the modification. The stability of modified TiO2 in epoxy was analyzed by sedimentation experiment. The modified TiO2-epoxy coating was prepared, and the corrosion resistance of the coating was analyzed by open circuit potential, electrochemical impedance spectroscopy and neutral salt spray test.
Findings
High-temperature mechanical modification can improve the compatibility of TiO2 in epoxy resin. At the same time, the modified TiO2-epoxy coating showed better corrosion resistance. Compared to the unmodified TiO2-epoxy coating, the coating improved the dry adhesion force by 61.7% and the adhesion drop by 33.3%. After 2,300 h of immersion in 3.5 Wt.% NaCl solution, the coating resistance of the modified TiO2 coating was enhanced by nearly two orders of magnitude compared to the unmodified coating.
Originality/value
The authors have grafted epoxy molecules onto TiO2 surfaces using a high-temperature mechanical force modification method. The compatibility of TiO2 with epoxy resin is enhanced, resulting in improved adhesion of the coating to the substrate and corrosion resistance of the coating.
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Jianghuai Zheng, Zhining Hu and Jialing Wang
The purpose of this paper is to examine the role of entrepreneurship in the process of enhancing economic innovation in the Yangtze River Delta of China.
Abstract
Purpose
The purpose of this paper is to examine the role of entrepreneurship in the process of enhancing economic innovation in the Yangtze River Delta of China.
Design/methodology/approach
A system of simultaneous‐dynamic panel equations is developed that incorporates the relationships between entrepreneurship, human capital (HC) and research and development (R&D) expenditures. Then, the generalized methods of moment approach designed by Arellano and Bond is applied to estimate this system and investigate whether there is a possibility to promote innovation through the channel of entrepreneurship in the Delta.
Findings
The empirical results reveal a significant relationship between entrepreneurship and HC, but insignificant relationship between R&D expenditures and entrepreneurship in the Delta.
Research limitations/implications
The Delta has a potential to transform its growth strategy due to its HC endowment as an antecedent of innovation, but entrepreneurs and local governments should seek more opportunities to exploit and strengthen their R&D base in the Delta.
Originality/value
In order to find an effective remedy for the current downturn in the Delta, this paper studies the role of entrepreneurship and assesses the potential that the Delta has in carrying out an innovation‐based growth strategy.
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Jialing Liu, Fangwei Zhu and Jiang Wei
This study aims to explore the different effects of inter-community group networks and intra-community group networks on group innovation.
Abstract
Purpose
This study aims to explore the different effects of inter-community group networks and intra-community group networks on group innovation.
Design/methodology/approach
The authors used a pooled panel dataset of 12,111 self-organizing innovation groups in 463 game product creative workshop communities from Steam support to test the hypothesis. The pooled ordinary least squares (OLS) model is used for analyzing the data.
Findings
The results show that network constraint is negatively associated with the innovation performance of online groups. The average path length of the inter-community group network negatively moderates the relationship between network constraint and group innovation, while the average path length of the intra-community group network positively moderates the relationship between network constraint and group innovation. In addition, both the network density of inter-community group networks and intra-community group networks can negatively moderate the negative relationship between network constraint and group innovation.
Originality/value
The findings of this study suggest that network structural characteristics of inter-community networks and intra-community networks have different effects on online groups’ product innovation, and therefore, group members should consider their inter- and intra-community connections when choosing other groups to form a collaborative innovation relationship.
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Jialing Zhao, Hongwei Wang, Ying Zhang and Yuxin Huang
The hosts' third-party certifications in the sharing accommodation platforms have largely overlooked how the provision of such certification information could facilitate the…
Abstract
Purpose
The hosts' third-party certifications in the sharing accommodation platforms have largely overlooked how the provision of such certification information could facilitate the trust-building process and subsequently influence consumers' purchase intention. Adopting an institution-based trust perspective, the authors differentiate various types of hosts' certification information (i.e. financial certification and social certification) and examine their role in the trust-building process between the hosts and the customers on sharing accommodation platforms.
Design/methodology/approach
This study uses the property-month level data of Airbnb Beijing from January 2019 to June 2020. Econometric analyses are adopted to evaluate the impact of institution-based trust on consumers' purchase intention. Specifically, the ordinary least square is used to testify the relationship between institution-based trust and purchase intention.
Findings
The empirical results show that the information on institution-based trust increases the likelihood that customers would reach purchase decisions. More importantly, results show that both financial certification and social certification affect consumers' purchase intention. The results further show that listings' attributes moderate the relationship between institution-based trust and customer purchase intention. Moreover, the authors find that “Superhost” and “Experience” positively moderate such relationships.
Originality/value
This paper confirms that the host certification fosters institution-based trust and reveals the impact of hosts' certification on consumers' purchase intentions. This study is among one of the first studies to incorporate institution-based trust into the trust formation on the sharing economy platform, which can improve the understanding of trust in the sharing economy context. The authors emphasize the importance of trust types on sharing economy platforms.
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Tao Zhang, Wanmin Zhao and Dongjun Tong
Flood season in our country is characterized by frequent heavy rains, and flood problems are becoming increasingly serious. The uneven distribution of water resources causes…
Abstract
Flood season in our country is characterized by frequent heavy rains, and flood problems are becoming increasingly serious. The uneven distribution of water resources causes conflicts in the occurrence of floods and droughts. Implementing effective flood control planning and solving drought and flood disasters are the research highlights of relevant institutions both domestic and abroad. This study develops a multiscale method of urban flood control planning based on microcirculation. A microcirculation water ecosystem, which consists of six elements, namely, collecting, interacting, precipitating, reserving, storing, and purifying, is introduced. This study investigates precipitation; peak shaving; recycle mode of filtration at the macro level in different regions; “hierarchy” in rainwater ecosystems in rain parks, heavy rain garden parks, and wetland parks at the meso level; and the concept of zero-emission rain in residential areas and roads at the micro level. Finally, this study analyzes a rain garden and its domestic application. A conclusion is drawn that the flood control planning model based on microcirculation can effectively reduce rain runoff. Empirical measurement proves that the proposed multiscale model for city flood control planning based on microcirculation promotes flood control and effectively reduces the occurrence of droughts and floods.
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The purpose of this study is to investigate how green brand positioning facilitated by utilitarian environmental benefits and nature connectedness may influence green brand image…
Abstract
Purpose
The purpose of this study is to investigate how green brand positioning facilitated by utilitarian environmental benefits and nature connectedness may influence green brand image, as mediated by green perceived value (GPV) and brand innovativeness and how brand type moderates these relationships.
Design/methodology/approach
Data were collected using an online survey method, and structural equation modeling was employed to test the research hypotheses with a sample of 826 Chinese respondents.
Findings
The results demonstrate that utilitarian environmental benefits directly enhance green brand image. Both utilitarian environmental benefits and nature connectedness indirectly influence green brand image through GPV and brand innovativeness. Subsequently, green brand innovativeness positively affects GPV. The moderating effects of brand type on the relationships in the model are also established.
Practical implications
Organisations should enhance green value and brand innovativeness when adopting green brand positioning tools to strengthen green brand image and implement diverse green branding strategies between brands of physical goods and services.
Originality/value
Although previous studies have investigated how perceived benefits affect the development of brand image, the issue has not been examined based on the human associative memory framework from a green branding perspective. No empirical study has simultaneously included both green brand innovativeness and GPV in this formation process. Additionally, the moderating role of brand type in the model has not been explored previously.
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Syntia Lemos Cotrim, Ageu Araújo Machado, Gislaine Camila Lapasini Leal, Mauro Antonio da Silva Sá Ravagnani and Edwin Vladimir Cardoza Galdamez
The purpose of this paper is to present the application of Design of Experiments techniques for the analysis of operating parameters of an industrial oven for the heat treatment…
Abstract
Purpose
The purpose of this paper is to present the application of Design of Experiments techniques for the analysis of operating parameters of an industrial oven for the heat treatment process of polyethylene terephthalate (PET) bottle filaments.
Design/methodology/approach
The focus is on evaluating new ways of operating the transformation process. The main issue is to raise what are the variables interfering with the performance of the oven. The complete 2k factorial for three factors of control was used to analyze the behavior of these variables and their relationships in the specific response parameter for the process.
Findings
The results presented in this work allow the company to have greater knowledge about the operation of the equipment. The study showed possibilities of 14.8% energy reduction.
Research limitations/implications
The heat treatment activity was characterized as a critical point in the production process, and techniques with empirical approaches, based on statistical techniques, was an opportunity that the company has to improve the execution of activities without major investments for the quality of the final product. The application of statistical quality techniques showed to be very promising.
Originality/value
The fact that the study was conducted using subjective quality performance makes this work different from others presented in the literature, showing the possibility to apply Design of Experiments using main control factors based on the opinion of experienced personnel involved in the process analyzed.
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Zhiqiang Xie, Lei Wang, Zhengyang Zhu, Zhi Fu and Xingdong Lv
The purpose of this paper is to introduce an interval finite element method (IFEM) to simulate the temperature field of mass concrete under multiple influence uncertainties e.g…
Abstract
Purpose
The purpose of this paper is to introduce an interval finite element method (IFEM) to simulate the temperature field of mass concrete under multiple influence uncertainties e.g. environmental temperature, material properties, pouring construction and pipe cooling.
Design/methodology/approach
Uncertainties of the significant factors such as the ambient temperature, the adiabatic temperature rise, the placing temperature and the pipe cooling are comprehensively studied and represented as the interval numbers. Then, an IFEM equation is derived and a method for obtaining interval results based on monotonicity is also presented. To verify the proposed method, a non-adiabatic temperature rise test was carried out and subsequently simulated with the method. An excellent agreement is achieved between the simulation results and the monitoring data.
Findings
An IFEM method is proposed and a non-adiabatic temperature rise test is simulated to verify the method. The interval results are discussed and compared with monitoring data. The proposed method is found to be feasible and effective.
Originality/value
Compared with the traditional finite element methods, the proposed method taking the uncertainty of various factors into account and it will be helpful for engineers to gain a better understanding of the real condition.
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Jialing (Catherine) Lin, Zhimin Zhou and Civilai Leckie
This study aims to empirically investigate how green transparency and green competence enhancement can promote consumer behavioral outcomes (i.e. green brand loyalty and…
Abstract
Purpose
This study aims to empirically investigate how green transparency and green competence enhancement can promote consumer behavioral outcomes (i.e. green brand loyalty and resistance to negative information regarding green brands) through green brand attachment (i.e., self–green brand connection and green brand prominence). It further explores these hypothesized relationships across brands of physical products and services.
Design/methodology/approach
Data were collected using an online survey from 826 Chinese consumers. Structural equation modeling is used to test the proposed conceptual model.
Findings
Our results demonstrate that green transparency and green competence enhancement positively affect consumer green brand attachment (i.e. self–green brand connection and green brand prominence) which subsequently influence consumers’ loyalty toward green brands and their resistance to negative information. Finally, the development of green brand attachment across brands of products and services is found to be different.
Research limitations/implications
Extending the conceptual model to other cultural contexts is suggested. Using the experimental design to examine other boundary conditions is recommended.
Practical implications
This study provides recommendations for marketers, especially brand managers, to facilitate green brand communications to strengthen consumer–brand relationships.
Originality/value
This study extends past research by examining two types of green brand attachment via a cognitive schema lens. Also, it shows the internal cognitive process by which green brand communications potentially promote consumer behavioral outcomes through green brand attachment. Lastly, it highlights differences in the development of green brand loyalty and consumer resistance to negative information across brands of products and services.
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