Na Chen

Prof. Dr. Na Chen

School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, Henan, China
orcid

Research Focus & Metrics

Academic Career Length

16Years (2011-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 February 2019 in Journal of Safety Research
Verified
Journal Article
Closed access
JZJiangshi Zhang
Jiangshi Zhang
WZWenyue Zhang
Wenyue Zhang
PXPeihui Xu
Peihui Xu
Na ChenNa Chen
Na Chen

Na ChenNa Chen
Na Chen
Ming ZhaoMing Zhao
Ming Zhao
KGKun Gao
Kun Gao
JZJun Zhao
Jun Zhao
Safety signs play a very important role in people’s evacuation during emergencies. In order to explore the appropriate color for subway safety signs, four safety signs of different color combinations are designed, and the virtual reality, eye-tracking technology, and physiological indicator measurement are used in a virtual subway fire escape experiment. A total of 96 participants with equal distribution in gender and four different color combination groups were recruited. Participants’ eye-tracking and physiological data (heart rate, skin conductance) were real-time recorded through ErgoLAB V3.0 in the whole experiment. The relationship between Color_of_safety_sign and escape performance, eye-tracking indicators, and physiological indicators is discussed respectively through SPSS. The results show that “Green and black” group has the best evacuation escape performance, low cognitive load, high search efficiency on safety signs, and the highest stress level and immersion and “Green and black” can be the most appropriate color for safety sign. This research is of certain significance for improving the function of subway fire-fighting infrastructure and the resilience of the metro system. Moreover, it can provide references and advice on risk management, emergency evacuation, and so on.

JZJiangshi Zhang
Jiangshi Zhang
Na ChenNa Chen
Na Chen
GFGui Fu
Gui Fu
MYMingwei Yan
Mingwei Yan
Young-Chan KimYoung-Chan Kim
Young-Chan Kim
Introduction: Senior managers’ attitudes towards safety are very important regarding the safety practices in an organization. The study is to describe the current situation of senior managers′ attitudes towards safety in the Chinese coal industry. Method: We evaluated the changing trends as well as the reasons for these changes in the Chinese coal industry in 2009 and in 2014 with 168 senior manager samples from large Chinese state-owned coal enterprises. Evaluations of 15 safety concepts were performed by means of a questionnaire. Results and Conclusions: Results indicate that, in 2014, three concepts were at a very high level (mean > 4.5), and six were at a relatively high level (4.5 > mean > 4.0). Analyses of changing trends revealed that nine concepts improved significantly, while four greatly declined in 2014 compared to those in 2009. The data reported here suggest that the reasons for the significant improvement with respect to the nine concepts include the improvement in social and legal environments, the improvement of the culture of social safety, workers′ safety demands being met, and scientific and technical advances in the coal industry. The decline of the four concepts seemed to be caused by a poor awareness of managers in the coal industry that safety creates economic benefits, insufficient information on safety, inadequate attention to the development of a safety culture and safety management methods, and safety organizations and workers′ unions not playing their role effectively. Practical Applications: We therefore recommend strengthening the evidence that safety creates economic benefits, providing incentives for employees to encourage their participation in safety management, and paying more attention to the prevention of accidents in coal mines via safety organizations and unions. These results can provide guidelines for workers, industrialists, and government regarding occupational safety in the whole coal industry.

Na ChenNa Chen
Na Chen
MZMing zhao
Ming zhao
KGKun Gao
Kun Gao
JZJun Zhao
Jun Zhao
Studying an individual’s emergency escape capability and its influencing factors is of great practical significance for evacuation and escape in subway emergencies. Taking Zhengzhou Zijing Mountain Subway station as the prototype, and using VR technology, a virtual subway fire escape scene was built. Combined with the total escape time, the total contact time with fire, and the total contact time with smoke, it proposed a calculation formula on emergency escape capability. A total of 34 participants with equal gender distribution were recruited to carry out the virtual subway fire escape experiment, and participants’ physiological data (heart rate variability, skin conductance) were real-time recorded by ErgoLAB V3.0 throughout the whole experiment. The emergency escape capability of each participant was evaluated quantitatively, and the related influencing factors were analyzed. The results show that for the age ranges (19–22 years old) in the experiment, the emergency escape capability of women is significantly lower than that of men (p < 0.05); although there is no significance in emergency escape capability in DISC personality types (p > 0.05), the mean emergency escape capability of people with influence personality type is the worst, and that of people with compliance type is the best; during virtual fire escape vs. baseline, Mean_SC and Mean_HR both increased very significantly (all p < 0.01), and participants were under stress during their virtual fire escape. There is a significant negative correlation between emergency escape capability and LF_increase_rate (p < 0.05), and a remarkably significant negative correlation between emergency escape capability and LF/HF_increase_rate (p < 0.01); the greater the increase rate of LF or LF/HF, the smaller the emergency escape capability, with excessive stress probably not being conducive to emergency escape. There is a very significant negative correlation between an individual’s emergency escape capability and the degree of familiarity with the Zijing Mountain subway station (p < 0.01). The findings provide references and suggestions on the emergency management and emergency evacuation for government and subway departments.

30 December 2011 in Procedia Engineering
Verified
Journal Article
Open access
Na ChenNa Chen
Na Chen
MYMao Yi
Mao Yi
Chinese coal mine safety situation has been very serious compared to other countries, and unsafe behavior is especially an important factor causing Chinese coal mine accidents. In this paper, it first through statistics finds that the proportion of gas explosion's death toll is the largest in the total death toll of Chinse coal mine accidents, and live-line work is the unsafe behavior causing the most death toll in Chinese coal mine gas explosion accidents. Then it gives a brief introduction and comparative analysis on the main behavior control methods at home and abroad – American DuPont company's STOP method, Japanese KYT method of Sumitomo Corporation, and domestic fine, hand pointing and oral description, safety education and training method, etc., and finds that each method has its own merits and faults. On this basis, combining the application of situation teaching and virtual reality in coal mines, two other unsafe behavior correction methods are proposed for Chinese coal mines: scenario design and virtual reality games. At the same time, it also suggests that we can first consider and choose live-line work - the unsafe behavior causing the most death toll in Chinese coal mine's primary accident of gas explosion, to design these two kinds of methods.

1 January 2026 in Computer Animation and Virtual Worlds
Verified
Journal Article
Closed access
Na ChenNa Chen
Na Chen
HWHaoyu Wang
Haoyu Wang
YHYitong Hu
Yitong Hu
RZRuifang Zhang
Ruifang Zhang
ZZZhipeng Zhang
Zhipeng Zhang