Fundamental Diagrams of Single-File Pedestrian Flow for Different Age Groups

2016 ◽  
pp. 154-161
Author(s):  
Shuchao Cao ◽  
Jun Zhang ◽  
Daniel Salden ◽  
Jian Ma
Keyword(s):  
Age Groups ◽  
Pedestrian Flow ◽  
Single File

Single-file pedestrian flow experiments under high-density conditions

2019 ◽  
Vol 531 ◽  
pp. 121718 ◽  
Author(s):  
Cheng-Jie Jin ◽  
Rui Jiang ◽  
Ruiwen Li ◽  
Dawei Li
Keyword(s):  
High Density ◽  
Pedestrian Flow ◽  
Single File ◽  
Flow Experiments

The stepping behavior analysis of pedestrians from different age groups via a single-file experiment

2018 ◽  
Vol 2018 (3) ◽  
pp. 033402 ◽  
Author(s):  
Shuchao Cao ◽  
Jun Zhang ◽  
Weiguo Song ◽  
Chang’an Shi ◽  
Ruifang Zhang
Keyword(s):  
Behavior Analysis ◽  
Age Groups ◽  
Single File

Asymmetric effect on single-file dense pedestrian flow

2015 ◽  
Vol 26 (06) ◽  
pp. 1550064 ◽  
Author(s):  
Hua Kuang ◽  
Mei-Jing Cai ◽  
Xing-Li Li ◽  
Tao Song
Keyword(s):  
Velocity Model ◽  
Mkdv Equation ◽  
Reductive Perturbation Method ◽  
Linear Stability Theory ◽  
Asymmetric Effect ◽  
Pedestrian Flow ◽  
Optimal Velocity ◽  
Single File ◽  
The Stability ◽  
Space Time Evolution

In this paper, an extended optimal velocity model is proposed to simulate single-file dense pedestrian flow by considering asymmetric interaction (i.e. attractive force and repulsive force), which depends on the different distances between pedestrians. The stability condition of this model is obtained by using the linear stability theory. The phase diagram comparison and analysis show that asymmetric effect plays an important role in strengthening the stabilization of system. The modified Korteweg–de Vries (mKdV) equation near the critical point is derived by applying the reductive perturbation method. The pedestrian jam could be described by the kink–antikink soliton solution for the mKdV equation. From the simulation of space-time evolution of the pedestrians distance, it can be found that the asymmetric interaction is more efficient compared to the symmetric interaction in suppressing the pedestrian jam. Furthermore, the simulation results are consistent with the theoretical analysis as well as reproduce experimental phenomena better.

Effect of turning curvature on the single-file dynamics of pedestrian flow: An experimental study

2021 ◽  
Vol 563 ◽  
pp. 125405
Author(s):  
Zhijian Fu ◽  
Tao Li ◽  
Qiangqiang Deng ◽  
Andreas Schadschneider ◽  
Lin Luo ◽  
...  
Keyword(s):  
Experimental Study ◽  
Pedestrian Flow ◽  
Single File

Influence of bottleneck on single-file pedestrian flow: Findings from two experiments

2020 ◽  
Vol 29 (8) ◽  
pp. 088902 ◽  
Author(s):  
Cheng-Jie Jin ◽  
Rui Jiang ◽  
Da-Wei Li
Keyword(s):  
Pedestrian Flow ◽  
Single File

scholarly journals Effects of Boundary Conditions on Single-File Pedestrian Flow

2014 ◽  
pp. 462-469 ◽  
Author(s):  
Jun Zhang ◽  
Antoine Tordeux ◽  
Armin Seyfried
Keyword(s):  
Boundary Conditions ◽  
Pedestrian Flow ◽  
Single File

An Ultrastructural Study of the Proliferation Patterns of the Reserve Cells of the Human Cervix Uteri

1972 ◽  
Vol 30 ◽  
pp. 80-81
Author(s):  
Takanori Sohda ◽  
Hiroshi Saito ◽  
Goro Asano ◽  
Katsunari Fukushi ◽  
Katsuya Suzuki ◽  
...  
Keyword(s):  
Ultrastructural Study ◽  
Age Groups ◽  
Point Of View ◽  
University Hospital ◽  
Cervix Uteri ◽  
Morphological Aspect ◽  
Functional Aspect ◽  
Pathological Conditions ◽  
Human Cervix ◽  
Morphological Patterns

Recently, the functional aspect as well as morphological aspect of the reserve cells in the cervix uteri drew much attention in view of the carcinogenesis in squamocolumunar junction. In this communication, the authors elucidate the ultrastructural features of the reserve cells in patients of various age groups visiting our university hospital and affiliated hospital.From conventional light microscopic point of view, the reserve cells tend to be pronounced in various pathological conditions, such as the persisting inflammation, proliferative disorders and irritation of hormones. The morphological patterns of the reserve cells from various stage and degree of irritation were observed.

Effects of aging on axon terminals in the dentate molecular layer

1987 ◽  
Vol 45 ◽  
pp. 928-929
Author(s):  
K. Cullen-Dockstader ◽  
E. Fifkova
Keyword(s):  
Granule Cells ◽  
Molecular Layer ◽  
Age Groups ◽  
Long Term Potentiation ◽  
Male Rats ◽  
Perforant Path ◽  
Axon Terminals ◽  
Fischer 344 ◽  
Spatial Memory Deficit ◽  
Effects Of Aging

Normal aging results in a pronounced spatial memory deficit associated with a rapid decay of long-term potentiation at the synapses between the perforant path and spines in the medial and distal thirds of the dentate molecular layer (DML), suggesting the alteration of synaptic transmission in the dentate fascia. While the number of dentate granule cells remains unchanged, and there are no obvious pathological changes in these cells associated with increasing age, the density of their axospinous contacts has been shown to decrease. There are indications that the presynaptic element is affected by senescence before the postsynaptic element, yet little attention has been given to the fine structure of the remaining axon terminals. Therefore, we studied the axon terminals of the perforant path in the DML across three age groups.5 Male rats (Fischer 344) of each age group (3, 24 and 30 months), were perfused through the aorta.

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