A Congestion Detection Based Traffic Control for Signalized Intersection

Varga, István

doi:10.3311/ppci.10917

Cited by 9 publications

(10 citation statements)

References 11 publications

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“…In our case below 100°C ( T αβ ) and above 140°C ( T βα ) only the thermodynamically stable α‐iPP develops, because it has a higher growth rate than the β‐iPP. [ 48,49 ] If the conditions of crystallization favor the growth of the β‐form (ie, the temperature is between T αβ and T βα ), the formation of this less stable modification is also feasible as it is presented in Figure 1. Fan‐like formations of the β‐modification develop in the early stage of the crystallization.…”

Section: Crystallization Modelmentioning

confidence: 99%

Self‐organization of micro reinforcements and the rules of crystal formation in polypropylene nucleated by non‐selective nucleating agents with dual nucleating ability

Menyhárd

Molnár

Horváth

et al. 2020

Polymer Crystallization

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This work demonstrates and models the self-organization of mixed polymorps in polymers containing simultaneously growing phases with different growth rates. The model was verified and demonstrated in isotactic polypropylene nucleated by a nonselective nucleating agent. The crystallization and melting processes were studied by calorimetry (DSC) and polarized light microscopy (PLM). The morphology of the samples was investigated using PLM and scanning electron microscopy (SEM). The fundamental rules of the formation of two polymorphic modifications developing simultaneously on the same nucleating particle are introduced. A simple equation is suggested to predict the morphological geometry on the lateral surface of the nucleating agent. The results indicated good agreement between the predicted and observed geometry. The proposed model explains the self-organization of micro-sized reinforcements of α-modification in the matrix of β-iPP. Although the proposed equation was tested for this particular case it is a general equation for all structures in which different polymorphs are growing simultaneously with different growth rates.

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Section: Crystallization Modelmentioning

confidence: 99%

Self‐organization of micro reinforcements and the rules of crystal formation in polypropylene nucleated by non‐selective nucleating agents with dual nucleating ability

Menyhárd

Molnár

Horváth

et al. 2020

Polymer Crystallization

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“…Cavitation flow around isolated circular cylinders has been examined in experiments [15][16][17][18][19][20] . These studies analyzed the effect of bubble generation on the vortex structure and the behavior of pressure waves generated during bubble collapse.…”

Section: Introductionmentioning

confidence: 99%

“…The cavitation number is an index representing the ease of occurrence of cavitation, and the smaller the value, the more easily bubbles are generated. Varga and Sevestyen have investigated the relationship between the cavitation number, cavity length, and Strouhal number in the critical and supercritical Re range 15 . They reported that with decreasing cavitation number, the cavity length increases and the vortex shedding frequency decreases.…”

Section: Introductionmentioning

confidence: 99%

Effects of cavitation on Kármán vortex behind circular-cylinder arrays: A molecular dynamics study

Asano

Noguchi

2020

The Journal of Chemical Physics

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The effects of cavitation on the flow around a circular-cylinder array are studied by using a molecular dynamics simulation. Cavitation significantly affects on vortex shedding characteristics. As the cavitation develops, the vibration acting on the cylinders decreases and eventually disappears. The further cavitation development generates a longer vapor region next to the cylinders, and the vortex streets are formed at further positions from the cylinders. The neighboring Kármán vortexes are synchronized in the antiphase in the absence of the cavitation. This synchronization is weakened by the cavitation, and an asymmetric wake mode can be induced. These findings help mechanical designs of fluid machinery that include cylinder arrays.

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“…signal heads can be controlled without direct physical connection to the central controller unit. Moreover, the advent of Autonomous Vehicles (AV) make new technologies possible to be applied in traffic control [6][7][8]. AVs need to visually sense the signal heads to gather information of signal heads, or it can be provided via wireless communication.…”

Section: Introductionmentioning

confidence: 99%

Wireless Traffic Signal Controller with Distributed Control System Architecture

Tettamanti

2019

Period. Polytech. Civil Eng.

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The paper presents a novel concept for traffic signal controller. Instead of the traditional central architecture, a wireless operation with distributed control architecture is proposed for traffic light control. The concept rests on local control units distributed in space as well, i.e. the signal heads also have own control logic. The basis of safe distributed operation is described in detail in the paper. Beside the presentation of the concept the required conformity with the specific standards are also investigated. Moreover, a formal method (Petri Nets modeling) is provided concerning a part of the proposed system, which confirms that the whole system goes to fail-safe state when critical problem occurs in any of the subsystems or communication.

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A Congestion Detection Based Traffic Control for Signalized Intersection

Abstract: Abstract

Cited by 9 publications

References 11 publications

Self‐organization of micro reinforcements and the rules of crystal formation in polypropylene nucleated by non‐selective nucleating agents with dual nucleating ability

Self‐organization of micro reinforcements and the rules of crystal formation in polypropylene nucleated by non‐selective nucleating agents with dual nucleating ability

Effects of cavitation on Kármán vortex behind circular-cylinder arrays: A molecular dynamics study

Wireless Traffic Signal Controller with Distributed Control System Architecture

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