Developing a synergistic approach to engineering education: China’s national policies on university–industry educational collaboration

Tengteng Zhuang,Haitao Zhou 서울대학교 교육연구소 2023 Asia Pacific Education Review Vol.24 No.1

This article examines the intents and effects of China’s national policies to promote a synergistic approach to university–industry collaborative education. These policies set out to reduce the academia-industry disconnection for engineering education. Based on document analysis and interviews with various types of stakeholders, the study reveals that China has strived for a synergistic approach to education by strengthening the main-actor role of enterprises, framing a policy support system, incorporating external stakeholders in universities’ governance structures, and building a coordinated framework for a synergistic approach to education. These policies have enhanced enterprises’ motivation to participate in university education, deepened enterprises’ engagement with engineering education at course level, and created an educational innovation ecosystem. Some challenges remain such as the mismatch between course update and technological development, the mismatch between costs and return for faculty members, and difficulty in assessment of outcomes. Overwhelmingly, China has tried exploring a model conducive to the improvement of higher education quality, and the overlapping triple helix model, compared with the statist or laissez-faire patterns, has a more robust effect in galvanizing stakeholders towards their collective goal in the Chinese context.

Modeling undergraduate STEM students’ satisfaction with their programs in China: an empirical study

Zhuang Tengteng,Cheung Alan C. K.,Tam Winnie 서울대학교 교육연구소 2020 Asia Pacific Education Review Vol.21 No.2

Several major reform areas attempted by ‘New Engineering Education’ (NEE), China’s most recent engineering education reform initiative at university level, are examined for their direct and indirect impact on Chinese STEM-major students’ satisfaction with their programs in this study. With data collected from a sample of 619 Chinese undergraduate students, the measurement and structural models both display good model fts. The structural results indicate that course satisfaction fully mediates the impact of classroom instruction method on program satisfaction, while partially mediates the impact of support from faculty members and alternative assessment methods on program satisfaction. The impact of resource and service on program satisfaction, however, is direct without any mediating efect in between. Multigroup analyses show that the impact of alternative assessment methods on course satisfaction is signifcantly stronger for frst-tier university students than for non-frst-tier university students. Furthermore, there is stronger impact of resource and service on program satisfaction for junior and senior students than for freshmen and sophomores. Practical implications are discussed.

Theoretical Method of Chamber Pressure for EPB Shield Tunneling Under-Crossing Existing Metro Tunnels

Hongpeng Lai,Tengteng Wang,Zuo Kang,Rui Chen,Qiuyang Hong 대한토목학회 2021 KSCE JOURNAL OF CIVIL ENGINEERING Vol.25 No.7

As an increasing number of metro lines have been planned or executed in urban area, new tunnel undercrossing existing tunnels has been commonly practiced. Construction of the existing tunnel causes disturbance to the surrounding soil and hence affects the operational parameters of undercrossing tunneling especially the chamber pressure of EPB machine. However, very limited research studies this effect. To fill the gap of knowledge, this paper proposed a new method for calculating the chamber pressure of EPB tunneling machine in undercrossing project. First, the effect of existing tunnel on surrounding soil is classified as removal-and-replacement effect, excavation-induced-disturbance effect, and elastic foundation beam effect. Second, based on analysis of the mutual interaction between existing tunnel and the undercrossing tunneling, three zones have been identified to study the chamber pressure of EPB machine. Next, a new method is proposed to calculate the chamber pressure in the process of undercrossing existing tunnel. Finally, the proposed method has been verified with measured data from two engineering cases. The comparison results show that the proposed method is in good agreement with the measured data, indicating that it is reasonable with high accuracy.

“New Engineering Education” in China: a national technological imaginary of the Chinese Dream

Aaron Koh,Tengteng Zhuang 서울대학교 교육연구소 2021 Asia Pacific Education Review Vol.22 No.1

This paper examines the “imaginaries” taking place in New Engineering Education (NEE). The NEE is the most recent reform of the engineering education sector in China and is used to interrogate the more encompassing backdrop of the country’s national imaginary, the “Chinese Dream.” Further, this paper analyzes three important policy documents that constitute the blueprint of the NEE. Drawing on Charles Taylor’s concept of the “social imaginary” and using critical discourse analysis, a close analysis of the discursive construction of the technological and national elements in the policy texts is carried out. This combinatory theoretical and analytical framework is used to examine how a normative vision and ideology of the development of engineering education is constructed as taking a “new” direction. In undertaking this policy analysis, this paper demonstrates how a rising power is revolutionizing its engineering education as a resource, coupled with the ideological “social (national) imagination” of the Chinese Dream, to extend its power and geopolitical positioning in a competitive and globalized economy.

Research and Optimization of Lateral Compressive Performance of the 3-D Printed Beetle Elytron Plate

Caiqi Zhao,Tengteng Zheng,Lijie Shang,Haitao Lan,Shuo Yang 대한토목학회 2023 KSCE Journal of Civil Engineering Vol.27 No.8

In this paper, two types of beetle elytron plates (end-trabecular beetle elytron plate (EBEP) and middle-trabecular beetle elytron plate (MBEP)) and honeycomb plate (HP) were manufactured by 3-D printed and applied to large-span spatial structure. The lateral compressive performance of the 3-D printed beetle elytron plate was investigated by lateral compression bearing capacity test and numerical analysis. The influence of number of cylinders, ratio of the radius of the cylinder to the side length of the hexagonal honeycomb core (ratio of radius-length), thickness of core layer and configuration of beetle elytron plate on the lateral compressive performance of the beetle elytron plates were studied and the optimization method for lateral compressive performance of the beetle elytron plates was proposed. The result shows that the lateral compression bearing capacity of EBEP is greater than that of MBEP, and both are greater than of HP. The lateral compression bearing capacity of the beetle elytron plate with six cylinders is about 25% higher than that of the HP without cylinders. The lateral compression bearing capacity of beetle elytron plate can be improved by increasing the thickness of plates. The results of the study will promote the application of beetle elytron plates in large-span spatial structures.

Comparative Study of Power Loss and Thermal Performance in Five-Phase FSCWPM Machine With/Without Third Harmonic Current Injection

Chen Haijun,Guo Tengteng,Zhang Lufeng 대한전기학회 2021 Journal of Electrical Engineering & Technology Vol.16 No.4

Five-phase fractional slot concentrated winding permanent magnet (FSCWPM) machine with equal/unequal stator teeth can improve the torque density by added third harmonic current injection (Sin + 3rd). However, the injection of the third harmonic current will change the stator, rotor, and PM losses, and thus the thermal distribution. Therefore, it is necessary to conduct a comparative study on the losses and the thermal performances of the fi ve-phase FSCWPM machine with the sine current supply and Sin + 3rd current supply. In this paper, the structures of the fi ve-phase FSCWPM machines with equal/ unequal stator teeth are illustrated, and their losses characteristic at diff erent rotating speeds including copper loss, PM loss, and iron-core loss are comparatively analyzed under the same output torque constraint. Then, their thermal distributions are investigated based on the coupling of electromagnetic-thermal calculation of the 3D fi nite element (FE) method. The results demonstrate that the fi ve-phase FSCWPM machines energized with the Sin + 3rd current have a better thermal performance at a low rotating speed, especially the fi ve-phase FSCWPM machine with unequal stator teeth. Furthermore, the thermal experiment concerning a fi ve-phase FSCWPM machine with unequal stator teeth is conducted to verify the validity of the related analysis.

Interaction of the Lysophospholipase PNPLA7 with Lipid Droplets through the Catalytic Region

Chang, Pingan,Sun, Tengteng,Heier, Christoph,Gao, Hao,Xu, Hongmei,Huang, Feifei Korean Society for Molecular and Cellular Biology 2020 Molecules and cells Vol.43 No.3

Mammalian patatin-like phospholipase domain containing proteins (PNPLAs) play critical roles in triglyceride hydrolysis, phospholipids metabolism, and lipid droplet (LD) homeostasis. PNPLA7 is a lysophosphatidylcholine hydrolase anchored on the endoplasmic reticulum which associates with LDs through its catalytic region (PNPLA7-C) in response to increased cyclic nucleotide levels. However, the interaction of PNPLA7 with LDs through its catalytic region is unknown. Herein, we demonstrate that PNPLA7-C localizes to the mature LDs ex vivo and also colocalizes with pre-existing LDs. Localization of PNPLA7-C with LDs induces LDs clustering via non-enzymatic intermolecular associations, while PNPLA7 alone does not induce LD clustering. Residues 742-1016 contains four putative transmembrane domains which act as a LD targeting motif and are required for the localization of PNPLA7-C to LDs. Furthermore, the N-terminal flanking region of the LD targeting motif, residues 681-741, contributes to the LD targeting, whereas the C-terminal flanking region (1169-1326) has an anti-LD targeting effect. Interestingly, the LD targeting motif does not exhibit lysophosphatidylcholine hydrolase activity even though it associates with LDs phospholipid membranes. These findings characterize the specific functional domains of PNPLA7 mediating subcellular positioning and interactions with LDs, as wells as providing critical insights into the structure of this evolutionarily conserved phospholipid-metabolizing enzyme family.

In situ investigations into mining-induced overburden failures in close multiple-seam longwall mining: A case study

Ning, Jianguo,Wang, Jun,Tan, Yunliang,Zhang, Lisheng,Bu, Tengteng Techno-Press 2017 Geomechanics & engineering Vol.12 No.4

Preventing water seepage and inrush into mines where close multiple-seam longwall mining is practiced is a challenging issue in the coal-rich Ordos region, China. To better protect surface (or ground) water and safely extract coal from seams beneath an aquifer, it is necessary to determine the height of the mining-induced fractured zone in the overburden strata. In situ investigations were carried out in panels 20107 (seam No. $2-2^{upper}$) and 20307 (seam No. $2-2^{middle}$) in the Gaojialiang colliery, Shendong Coalfield, China. Longwall mining-induced strata movement and overburden failure were monitored in boreholes using digital panoramic imaging and a deep hole multi-position extensometer. Our results indicate that after mining of the 20107 working face, the overburden of the failure zone can be divided into seven rock groups. The first group lies above the immediate roof (12.9 m above the top of the coal seam), and falls into the gob after the mining. The strata of the second group to the fifth group form the fractured zone (12.9-102.04 m above the coal seam) and the continuous deformation zone extends from the fifth group to the ground surface. After mining Panel 20307, a gap forms between the fifth rock group and the continuous deformation zone, widening rapidly. Then, the lower portion of the continuous deformation zone cracks and collapses into the fractured zone, extending the height of the failure zone to 87.1 m. Based on field data, a statistical formula for predicting the maximum height of overburden failure induced by close multiple seam mining is presented.

Memristive effect with non-zero-crossing current-voltage hysteresis behavior based on Ag doped Lophatherum gracile Brongn

Yanjun Xu,Lu Tan,Bai Sun,Ming Lei,Yiluo Zhao,Tengteng Li,Liang Zheng,Shouhui Zhu,Yong Zhang,Yong Zhao 한국물리학회 2020 Current Applied Physics Vol.20 No.4

The memristive effect become a bio-electronics research focus with the development of sustainable systems and the application of multifunctional electronic devices. In this paper, the natural Lophatherum gracile Brongn (LGB) was employed as active layer to prepare Ag/LGB/fluorine-doped tin oxide (FTO) bio-memristor. Further, different doping ratios nano silver powders (Ag nanoparticle) were doped into LGB functional layers at 0 wt%, 0.2 wt%, 0.33 wt%, 1.0 wt%, 2.0 wt%, 10.0 wt% and 20.0 wt%. It is found that the capacitive-coupled memristive performance of the Ag/Ag-doped-LGB/FTO devices was markedly changed. Finally, it is confirmed that Ag ions transferring and Ag filament formation under the applied voltage are responsible for capacitive-coupled memristive behavior. This research has revealed the realization of capacitive-coupled memristive effect of biomemristor, which opens a new way to achieve multifunctional performance for electronic device.

Preparation and Performance of Road Micro-surfacing Materials with Exhaust Purification Function

Chaohui Wang,Hao Fu,Qian Chen,Xiaolong Sun,Tengteng Guo,Jin Guo 대한토목학회 2019 KSCE JOURNAL OF CIVIL ENGINEERING Vol.23 No.7

Road micro-surfacing materials with exhaust purification function were developed to purify and alleviate serious air pollution in cities. Two types of functional materials satisfied the basic performance requirements of aggregates and fillers were selected to develop micro-surfacing materials with exhaust purification function. Test equipment for exhaust purification effect was invented, and test methods were proposed. The exhaust purification effect involved in functional micro-surfacing materials was comprehensively investigated. The road performance was also evaluated. Finally, the exhaust purification mechanism of functional micro-surfacing materials was revealed. Results showed that the purification rates of gaseous pollutants (COx, NOx, and SO2) and particulate pollutants (PM 2.5 and PM 10) were above 15% and 50%, respectively based on indoor heating and cooling intervals, and that of outdoors were 20% and 40%. The functional micro-surfacing materials exhibited satisfactory road performance. Moreover, the self-polarization effect of the functional materials contributed to the exhaust purification effect.