Search results

1 – 10 of 15
Per page
102050
Citations:
Loading...
Access Restricted. View access options
Article
Publication date: 7 November 2016

Zhanhong Wan, Zongfu Ren, Xiaochun Wang and Honghao Zheng

To observe the relations between three important factors resulting in estuarial Hypoxia phenomena of Yangtze River – wind, river flow, and stratification. The purpose of the paper…

221

Abstract

Purpose

To observe the relations between three important factors resulting in estuarial Hypoxia phenomena of Yangtze River – wind, river flow, and stratification. The purpose of the paper is to analyze the possible reasons why hypoxia occurs in late spring and disappears in October.

Design/methodology/approach

To overcome the difficulty in examining the role of physical and biological factors affecting hypoxia based on measurement alone, finite-volume community ocean model (FVCOM) was introduced into the investigation. Observed freshwater flux data from Yangtze River, monthly averaged wind speed data, and other observed data were input into the model; the accuracy of which was validated with various kinds of data. The authors used the trajectories of Lagrangian particles from Yangtze River to study the regions of strong riverine influence under different wind forcing conditions and compared the simulation results with former observations.

Findings

Trade wind is a significant factor to influence the forming and receding of hypoxia across the Yangtze River.

Originality/value

Using FVCOM to investigate estuary hypoxia is more economical and effective.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 26 no. 8
Type: Research Article
ISSN: 0961-5539

Keywords

Access Restricted. View access options
221

Abstract

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 25 no. 7
Type: Research Article
ISSN: 0961-5539

Access Restricted. View access options
Article
Publication date: 4 March 2014

Cuiping Kang, Gang Wang, Min Shi and Fei Sun

This paper aims to explore the developing trend of higher pedagogy, to promote the research of higher pedagogy to be more canonical and scientific and to improve the higher…

895

Abstract

Purpose

This paper aims to explore the developing trend of higher pedagogy, to promote the research of higher pedagogy to be more canonical and scientific and to improve the higher education theory.

Design/methodology/approach

The utility research uses a method of quantitative study, namely “content analysis”, to estimate and analyze the higher education theory literature on ten dimensionalities which include theme, author, abstract, keywords, subject, proposing of the issue, definition of key terms, research methods, conclusion, reference and annotations from 1996 to 2006 in China.

Findings

The analysis of the selected 250 academic theses and reports in the field of higher education shows that academic research and theoretical standard have been improved, meanwhile academic criterion have been formed by degrees in higher pedagogy within ten years. At the same time, there are still some problems in the papers and reports the authors have selected such as title, key words, proposing of the issue, researching method and conclusion.

Originality/value

This paper sums up the trend of research on higher education in China for the past ten years, and points out the problems in this trend and then proposes ways to improve the research of higher education in China.

Details

International Journal of Educational Management, vol. 28 no. 3
Type: Research Article
ISSN: 0951-354X

Keywords

Access Restricted. View access options
Book part
Publication date: 10 December 2024

Haoyue Zhang

In this chapter, the author compares two representations of the child from two famous films by the Fifth Generation’s top director in China, Chen Kaige, Yellow Earth (1984) and…

Abstract

In this chapter, the author compares two representations of the child from two famous films by the Fifth Generation’s top director in China, Chen Kaige, Yellow Earth (1984) and Together (2002). The girl’s story in the former and the boy’s story in the latter show respectively the dissolution of the Party/state as an extended family home, and it being replaced by the atomized, fluid, and flexible family home in the new state-led neo-liberal order. Compared with the girl, the boy in the new century tries to convey an equally lyrical articulation of the family/home, but differently, with a strong sense of his subjectivity. Thus, the boy’s voice in Together, self-reflective, artistically innovative, and affective, becomes a voice of resistance against authoritarian neoliberalism in post-socialist China.

Details

Children and Youth in Armed Conflict: Responses, Resistance, and Portrayal in Media
Type: Book
ISBN: 978-1-83549-703-6

Keywords

Access Restricted. View access options
Article
Publication date: 10 December 2021

Rui Yan, Yuye Wang, Pengjun Luo, Yangbo Li and Xiaochun Lu

The limited strength of polylactic acid (PLA) hinders its extensive engineering applications. This paper aims to enhance its strength and realize diverse applications.

242

Abstract

Purpose

The limited strength of polylactic acid (PLA) hinders its extensive engineering applications. This paper aims to enhance its strength and realize diverse applications.

Design/methodology/approach

Here, the continuous fiber reinforced PLA composites are fabricated by a customized fused filament fabrication three-dimensional printer. Uniaxial tensile and three-point flexural tests have been conducted to analyze the reinforcement effect of the proposed composites. To unveil the adhering mechanism of optic fiber (OF) and PLA, post failure analysis including the micro imaging and morphology have been performed. The underlying mechanism is that the axial tensile strength of the OF and the interfacial adhesion between PLA and OF compete to enhance the mechanical properties of the composite.

Findings

It is found that 10%–20% enhancement of strength, ductility and toughness due to the incorporation of the continuous OF.

Originality/value

The continuous OFs are put into PLA first time to improve the strength. The fabrication method and process reported here are potentially applied in such engineering applications as aerospace, defense, auto, medicine, etc.

Details

Rapid Prototyping Journal, vol. 28 no. 4
Type: Research Article
ISSN: 1355-2546

Keywords

Access Restricted. View access options
Article
Publication date: 24 December 2024

Fanglei Zhong, Xiaochun Ma, Xuyan Jiang, Yijun Mao and Xiaowei Lyu

This study aims to examine the effect of education for sustainable development (ESD) on students’ sustainability behaviors in Chinese higher education institutions (HEIs), aiming…

18

Abstract

Purpose

This study aims to examine the effect of education for sustainable development (ESD) on students’ sustainability behaviors in Chinese higher education institutions (HEIs), aiming to identify the educational enhancement pathways and influencing factors based on students’ perspectives.

Design/methodology/approach

Data were collected from students in Chinese HEIs using an online survey. Structural equation modeling is used to analyze the data and verify the pathways for enhancing students’ sustainability behaviors through ESD in HEIs. The effects of students’ demographic characteristics, majors, and other factors are also examined.

Findings

ESD in Chinese HEIs promotes students’ sustainability cognition and behaviors. Students’ sustainability cognition plays a mediating role and has a positive effect on enhancing sustainability behaviors through education. In the influence pathway, the behavioral attitudes of students majoring in humanities and social sciences with high monthly expenditures are more significant for promoting sustainable social participation. Meanwhile, gender and educational level are not significant moderating factors.

Research limitations/implications

Factors such as cognition are subjective and difficult to measure. The sample’s representativeness warrants further consideration, and there is a lack of time-series change data. Nevertheless, this attempt to examine the mechanism of ESD from students’ perspectives can help assess ESD in HEIs more rationally and make the improvement paths more efficient.

Practical implications

This study offers evidence to support ESD-related decision-making in Chinese HEIs. It is suggested that HEIs continue to strengthen ESD, focusing on influencing behavior by enhancing students’ sustainability cognition. Pedagogical approaches should be adjusted based on students’ spending habits and majors to maximize educational outcomes and support China’s sustainability ambitions.

Originality/value

Based on the perspective of Chinese HEI students, this study makes observations about ESD in Chinese HEIs, focuses on the interaction between the sustainability cognition and behaviors of students, and expands the discussion of pathways for HEIs to promote students’ sustainability cognition and behaviors.

Details

International Journal of Sustainability in Higher Education, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1467-6370

Keywords

Available. Open Access. Open Access
Article
Publication date: 1 July 2021

Xiaochun Guan, Sheng Lou, Han Li and Tinglong Tang

Deployment of deep neural networks on embedded devices is becoming increasingly popular because it can reduce latency and energy consumption for data communication. This paper…

3415

Abstract

Purpose

Deployment of deep neural networks on embedded devices is becoming increasingly popular because it can reduce latency and energy consumption for data communication. This paper aims to give out a method for deployment the deep neural networks on a quad-rotor aircraft for further expanding its application scope.

Design/methodology/approach

In this paper, a design scheme is proposed to implement the flight mission of the quad-rotor aircraft based on multi-sensor fusion. It integrates attitude acquisition module, global positioning system position acquisition module, optical flow sensor, ultrasonic sensor and Bluetooth communication module, etc. A 32-bit microcontroller is adopted as the main controller for the quad-rotor aircraft. To make the quad-rotor aircraft be more intelligent, the study also proposes a method to deploy the pre-trained deep neural networks model on the microcontroller based on the software packages of the RT-Thread internet of things operating system.

Findings

This design provides a simple and efficient design scheme to further integrate artificial intelligence (AI) algorithm for the control system design of quad-rotor aircraft.

Originality/value

This method provides an application example and a design reference for the implementation of AI algorithms on unmanned aerial vehicle or terminal robots.

Details

Industrial Robot: the international journal of robotics research and application, vol. 48 no. 5
Type: Research Article
ISSN: 0143-991X

Keywords

Access Restricted. View access options
Case study
Publication date: 8 April 2021

Wiboon Kittilaksanawong and Huijing Liu

Students will be able to analyse competitive situations of the focal firm in the platform market, factors that make the focal firm become dominant in the sharing economy through…

Abstract

Learning outcomes

Students will be able to analyse competitive situations of the focal firm in the platform market, factors that make the focal firm become dominant in the sharing economy through the technology platform and the focal firm’s motives and growth strategies through mergers and acquisitions and overseas expansion, as well as give recommendations on the focal firm’s strategies to move forward to achieve and maintain its competitive position in the platform market.

Case overview/synopsis

On 4th April, 2018, Meituan-Dianping (Meituan), a Chinese group-buying website for consumer products and retail services acquired Mobike, a Chinese dockless bike-sharing platform for US$2.7bn. Mobike had raised several rounds of funding for its large investments and operations in this highly competitive and cash-intensive industry. However, it was still struggling to survive and make a profit in the Chinese and overseas markets. It was believed that the merger between the companies was the only viable alternative. Had Meituan’s Chief Executive Officer made the right decision in acquiring Mobike? After Mobike became an integral part of Meituan, what should be done to turn this technology platform to be profitable in the Chinese and overseas market?

Complexity academic level

The case is intended for senior undergraduate or graduate-level courses in business schools.

Supplementary materials

Teaching Notes are available for educators only.

Subject code

CSS 11: Strategy.

Details

Emerald Emerging Markets Case Studies, vol. 11 no. 1
Type: Case Study
ISSN: 2045-0621

Keywords

Access Restricted. View access options
Article
Publication date: 24 September 2024

Yitian Chi, Narayanan Murali and Xiaochun Li

High-performance wrought aluminum alloys, particularly AA6061, are pivotal in industries like automotive and aerospace due to their exceptional strength and good response to heat…

57

Abstract

Purpose

High-performance wrought aluminum alloys, particularly AA6061, are pivotal in industries like automotive and aerospace due to their exceptional strength and good response to heat treatments. Investment casting offers precision manufacturing for these alloys, because casting AA6061 poses challenges like hot cracking and severe shrinkage during solidification. This study aims to address these issues, enabling crack-free investment casting of AA6061, thereby unlocking the full potential of investment casting for high-performance aluminum alloy components.

Design/methodology/approach

Nanotechnology is used to enhance the investment casting process, incorporating a small volume fraction of nanoparticles into the alloy melt. The focus is on widely used aluminum alloy 6061, utilizing rapid investment casting (RIC) for both pure AA6061 and nanotechnology-enhanced AA6061. Microstructural characterization involved X-ray diffraction, optical microscopy, scanning electron microscopy, differential scanning calorimetry and energy dispersive X-ray spectroscopy. Mechanical properties were evaluated through microhardness and tensile testing.

Findings

The study reveals the success of nanotechnology-enabled investment casting in traditionally challenging wrought aluminum alloys like AA6061. Achieving crack-free casting, enhanced grain morphology and superior mechanical properties, because the nanoparticles control grain sizes and phase growth, overcoming traditional challenges associated with low cooling rates. This breakthrough underscores nanotechnology's transformative impact on the mechanical integrity and casting quality of high-performance aluminum alloys.

Originality/value

This research contributes originality and value by successfully addressing the struggles in investment casting AA6061. The novel nano-treating approach overcomes solidification defects, showcasing the potential of integrating nanotechnology into rapid investment casting. By mitigating challenges in casting high-performance aluminum alloys, this study paves the way for advancements in manufacturing crack-free, high-quality aluminum alloy components, emphasizing nanotechnology's transformative role in precision casting.

Details

Rapid Prototyping Journal, vol. 31 no. 1
Type: Research Article
ISSN: 1355-2546

Keywords

Access Restricted. View access options
Article
Publication date: 17 October 2022

Yitian Chi, Narayanan Murali, Jingke Liu, Maximilian Liese and Xiaochun Li

Additive manufacturing (AM) can achieve significant weight savings with only minor compromises in strength if high-performance wrought aluminum alloys are used as feedstock…

711

Abstract

Purpose

Additive manufacturing (AM) can achieve significant weight savings with only minor compromises in strength if high-performance wrought aluminum alloys are used as feedstock. Despite the advantages in strength that aluminum alloys (AA) 6061 offer, they cannot be manufactured via printing because of hot cracking and other solidification problems. The purpose of this study is to achieve high-quality printing of AA6061 with nanotreated wires.

Design/methodology/approach

Nanotreating was used to modify the AA6061 alloy composition by adding a small fraction of nanoparticles to enhance the alloy’s manufacturability and resultant properties. Wire arc additive manufacturing (WAAM) was used to print the nanotreated AA6061 wire feedstock. The microstructure of the printed AA6061 was characterized by X-ray crystallography, optical microscopy, scanning electron microscopy and energy dispersive spectroscopy mapping. The microhardness profile, tensile behavior and fracture surface were analyzed.

Findings

This work successfully used WAAM to print nanotreated AA 6061 components. The resulting AA6061 parts were crack-free, with exceptional grain morphology and superior mechanical properties. Owing to the excellent size control capabilities of nanoparticles, a homogeneous distribution of small grains was maintained in all deposited layers, even during repeated thermal cycles.

Originality/value

Previous studies have not successfully printed AA6061 using WAAM. Conventional WAAM products exhibit anisotropic mechanical properties. The nanotreated AA6061 was successfully printed to achieve homogeneous microhardness and isotropic tensile properties. The promising results of this study reflect the great potential of nanotech metallurgy as applied to the WAAM process.

Details

Rapid Prototyping Journal, vol. 29 no. 7
Type: Research Article
ISSN: 1355-2546

Keywords

1 – 10 of 15
Per page
102050