Bidirectional Flow on Stairs at Different Flow Ratios

2020 ◽  
pp. 291-297
Author(s):  
Rui Ye ◽  
Jun Zhang ◽  
Mohcine Chraibi ◽  
Weiguo Song
Keyword(s):  
Bidirectional Flow

Reversing the flow of short-term missions within a partnership model: Perceptual outcomes

2020 ◽  
pp. 009182962097237
Author(s):  
Simone Mulieri Twibell
Keyword(s):  
Social Capital ◽  
Social Networks ◽  
Cross Cultural ◽  
Short Term ◽  
Partnership Model ◽  
And Function ◽  
Bidirectional Flow ◽  
The Church

Short-term missions provide opportunities for the formation of cross-cultural relationships and joint evangelistic endeavors. Scholars have challenged the typical unidirectional nature of short-term mission and partnership efforts, advocating for a more bidirectional flow of resources. This article analyzes the dynamics of reverse short-term missions with the goal of understanding their contributions from the perspective of the American hosts. The author suggests that reverse short-term missions bridge social capital across social networks and function as “networks of invigoration” by bringing information benefits to their hosts. These types of exchanges have the potential to help the American church reinterpret familiar experiences and see the mission of the church in a new way. Five perceptual outcomes are identified: alteration of perspectives; service opportunities for the hosts; renewal of spiritual commitments; first-hand exposure to a different culture; and contact with faith-mission models.

scholarly journals Power Bidirectional Flow Converter Based on Linear Phase Shift Transformer

2021 ◽  
Vol 651 (2) ◽  
pp. 022014
Author(s):  
Mei Wu ◽  
Jinghong Zhao ◽  
Zhifang Yuan
Keyword(s):  
Phase Shift ◽  
Linear Phase ◽  
Bidirectional Flow

The CTSA Mandate: Are We There Yet?

2010 ◽  
Vol 24 (1) ◽  
pp. 64-73 ◽  
Author(s):  
Carolyn M. Sampselle ◽  
Kenneth J. Pienta ◽  
Dorene S. Markel
Keyword(s):  
Community Engagement ◽  
Health Care Providers ◽  
National Institutes Of Health ◽  
Health Priorities ◽  
University Of Michigan ◽  
Care Providers ◽  
Front Line ◽  
The University ◽  
Bidirectional Flow ◽  
Flow Of Information

The ultimate aim of the National Institutes of Health Clinical and Translational Science Award (CTSA) initiative is to accelerate the movement of discoveries that can benefit human health into widespread public use. To accomplish this translational mandate, the contributions of multiple disciplines, such as dentistry, nursing, pharmacy, public health, biostatistics, epidemiology, and bioengineering, are required in addition to medicine. The research community is also mandated to establish new partnerships with organized patient communities and front line health care providers to assure the bidirectional flow of information in order that health priorities experienced by the community inform the research agenda. This article summarizes current clinical research directives, the experience of the University of Michigan faculty during the first 2 years of CTSA support, and recommendations to enhance the effectiveness of future CTSA as well as other interdisciplinary initiatives. While the manuscript focuses most closely on the CTSA Community Engagement mission, the challenges to interdisciplinarity and bidirectionality extend beyond the focus of community engagement.

Bidirectional flow micropump based on dynamic rectification

2013 ◽  
Vol 204 ◽  
pp. 107-113 ◽  
Author(s):  
Pei Song Chee ◽  
Ruzairi Abdul Rahim ◽  
Rashidah Arsat ◽  
Uda Hashim ◽  
Pei Ling Leow
Keyword(s):  
Bidirectional Flow

Upstream pressure for systemic to pulmonary flow from bronchial circulation in dogs

1987 ◽  
Vol 63 (2) ◽  
pp. 485-491 ◽  
Author(s):  
P. G. Agostoni ◽  
M. E. Deffebach ◽  
W. Kirk ◽  
S. Lakshminarayan ◽  
J. Butler
Keyword(s):  
Arterial Pressure ◽  
Venous Pressure ◽  
Systemic Arterial Pressure ◽  
Driving Pressure ◽  
Upstream Site ◽  
Bronchial Circulation ◽  
Pulmonary Flow ◽  
Upstream Pressure ◽  
Pulmonary Arterial ◽  
Bidirectional Flow

Systemic to pulmonary flow from bronchial circulation, important in perfusing potentially ischemic regions distal to pulmonary vascular obstructions, depends on driving pressure between an upstream site in intrathoracic systemic arterial network and pulmonary vascular bed. The reported increase of pulmonary infarctions in heart failure may be due to a reduction of this driving pressure. We measured upstream element for driving pressure for systemic to pulmonary flow from bronchial circulation by raising pulmonary venous pressure (Ppv) until the systemic to pulmonary flow from bronchial circulation ceased. We assumed that this was the same as upstream pressure when there was flow. Systemic to pulmonary flow from bronchial circulation was measured in left lower lobes (LLL) of 21 anesthetized open-chest dogs from volume of blood that overflowed from pump-perfused (90–110 ml/min) pulmonary vascular circuit of LLL and was corrected by any changes of LLL fluid volume (wt). Systemic to pulmonary flow from bronchial circulation upstream pressure was linearly related to systemic arterial pressure (slope = 0.24, R = 0.845). Increasing Ppv caused a progressive reduction of systemic to pulmonary flow from bronchial circulation, which stopped when Ppv was 44 +/- 6 cmH2O and pulmonary arterial pressure was 46 +/- 7 cmH2O. A further increase in Ppv reversed systemic to pulmonary flow from bronchial circulation with blood flowing back into the dog. When net systemic to pulmonary flow from bronchial circulation by the overflow and weight change technique was zero a small bidirectional flow (3.7 +/- 2.9 ml.min-1 X 100 g dry lobe wt-1) was detected by dispersion of tagged red blood cells that had been injected.(ABSTRACT TRUNCATED AT 250 WORDS)

bidirectional flow

2000 ◽  
pp. 117-117
Author(s):  
Martin H. Weik
Keyword(s):  
Bidirectional Flow

Numerical Anaysis of a Thermopneumatic Micropump

2010 ◽  
Author(s):  
S. Shahsavari ◽  
M. B. Shafii ◽  
M. H. Saidi
Keyword(s):  
Fluid Flow ◽  
Numerical Study ◽  
Three Dimensional ◽  
Working Fluid ◽  
Structure Interaction ◽  
Positive Displacement ◽  
Dimensional Simulation ◽  
Center Deflection ◽  
Bidirectional Flow ◽  
Secondary Fluid

Thermopneumatic micropump is one type of positive displacement micropump, which has many applications due to its relatively large stroke volume, low working voltage, and simple fabrication in microscale. In this paper, a numerical study of heat transfer and fluid flow in a valveless thermopneumatically driven micropump is presented. For rectifying the bidirectional flow, a nozzle and a diffuser are used as the inlet and outlet channels of the chamber. Since the fluid flow is induced by the motion of a diaphragm, the numerical simulation includes fluid structure interaction, which requires applying a dynamic mesh. The domain of solution is divided into two sections; the actuator unit, which contains the secondary fluid, and the main chamber through which the working fluid is passing. The temperature distribution, the pressure variations, and the center deflection of the diaphragm are obtained. In order to validate the model, the numerical results are compared with some experimental data, which shows fair consistency. According to the results of the three dimensional simulation, the rectification efficiency for the nozzle and diffuser channels depends on the frequency.

scholarly journals An Investigation Capability Model for Bidirectional Pedestrian Flow

2015 ◽  
Vol 9 (12) ◽  
pp. 88 ◽  
Author(s):  
Mohammed Mahmod Shuaib ◽  
Zarita Zainuddin
Keyword(s):  
Average Density ◽  
Fundamental Diagram ◽  
Crowd Dynamics ◽  
Self Organized ◽  
Pedestrian Traffic ◽  
Representative Model ◽  
Tactical Decision ◽  
Dynamics Models ◽  
The Impact ◽  
Bidirectional Flow

<p class="zhengwen"><span lang="EN-GB">The pedestrian traffic flow in bidirectional walkways is very crucial aspect influenced by the level of pedestrians’ decisions.</span><span lang="EN-GB"> In this article, the authors show that the simulated pedestrians walking based on crowd dynamics models of low level mechanism of navigation (operational level) are short-sighted in avoiding counter flow. Such limitation resulted in unrealistic formation of motion in bidirectional flow, that the movement is less systematic and the lanes are less coherent than what in real situation. To obtain a more representative model, the authors improve the investigation capability model as a tactical decision model to be incorporated into a crowd dynamics model to reproduce better formation of motion. This is accomplished by granting the pedestrians the ability to investigate the macroscopic behaviors in their investigation areas and make decisions for convenience flow. The new model considers the average density and flow inside such areas and models their effect on the pedestrians' decisions. Simulations are performed to validate the work qualitatively by tracing the behavior of the simulated pedestrians and studying the impact of this behavior on the self-organized phenomenon: lane formation. Furthermore, the fundamental diagram of bidirectional flow is reproduced and compared with experimental fundamental diagrams.</span></p>

A feature-dependent fuzzy bidirectional flow for adaptive image sharpening

2007 ◽  
Vol 70 (4-6) ◽  
pp. 883-895 ◽  
Author(s):  
Shujun Fu ◽  
Qiuqi Ruan ◽  
Wenqia Wang ◽  
Fuzheng Gao ◽  
Heng-Da Cheng
Keyword(s):  
Image Sharpening ◽  
Bidirectional Flow
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