Comprehensive study on unipolar RRAM charge conduction and stochastic features, a simulation approach

2021 ◽  
Author(s):  
David Maldonado ◽  
Francisco Gómez-Campos ◽  
M. B. González ◽  
Andrés Roldan ◽  
Francisco Jimenez-Molinos ◽  
...  
Keyword(s):  
Compact Modeling ◽  
Simulation Tool ◽  
Simulation Approach ◽  
Circuit Breakers ◽  
Conductive Filament ◽  
Natural Manner ◽  
Depth Analysis ◽  
Current Steps ◽  
Unipolar Devices ◽  
Comprehensive Study

Abstract An in-depth analysis of resistive switching (RS) in unipolar devices is performed by means of a new simulator based on resistive circuit breakers of different features. The forming, set and reset processes are described in terms of the stochastic formation and rupture of conductive filaments of several branches in the dielectric. Both, the electric field and temperature dependencies are incorporated in the simulation. The simulation tool was tuned with experimental data of devices fabricated making use of the Ti/HfO2/Si stack. The variability and the stochastic behavior are characterized and reproduced correctly by simulation to understand the physics behind RS. Reset curves with several current steps are explained considering the rupture of different branches of the conductive filament. The simulation approach allows to connect in a natural manner to compact modeling solutions for the devices under study.

scholarly journals PROCEDURE ENABLING SIMULATION AND IN-DEPTH ANALYSIS OF OPTICAL EFFECTS IN CAMERA-BASED TIME-OF-FLIGHT SENSORS

2018 ◽  
Vol XLII-2 ◽  
pp. 83-89
Author(s):  
M. Baumgart ◽  
N. Druml ◽  
M. Consani
Keyword(s):  
Path Length ◽  
Time Of Flight ◽  
Optical Path Length ◽  
Optical Path ◽  
Light Sources ◽  
Simulation Approach ◽  
Optical Signals ◽  
Sensor Performance ◽  
Depth Analysis ◽  
Detailed Simulation

This paper presents a simulation approach for Time-of-Flight cameras to estimate sensor performance and accuracy, as well as to help understanding experimentally discovered effects. The main scope is the detailed simulation of the optical signals. We use a raytracing-based approach and use the optical path length as the master parameter for depth calculations. The procedure is described in detail with references to our implementation in Zemax OpticStudio and Python. Our simulation approach supports multiple and extended light sources and allows accounting for all effects within the geometrical optics model. Especially multi-object reflection/scattering ray-paths, translucent objects, and aberration effects (e.g. distortion caused by the ToF lens) are supported. The optical path length approach also enables the implementation of different ToF senor types and transient imaging evaluations. The main features are demonstrated on a simple 3D test scene.

Business and Self-regulation: Results from a Comparative Study on the Prevention of Economic Crime

2007 ◽  
Vol 28 (2) ◽  
Author(s):  
Diana Ziegleder
Keyword(s):  
Business Ethics ◽  
Comparative Study ◽  
Self Regulation ◽  
Codes Of Conduct ◽  
Economic Crime ◽  
Depth Analysis ◽  
Comprehensive Study

AbstractEconomic crime seems to be of increasing concern to business companies themselves. Their responses to economic crime reflect not only civic and legal pressures but also an increasing awareness for certain risks. This article reports findings from a comparative study (USA and Germany) on internal company processes of preventing and sanctioning economic crime, which was part of a more comprehensive study. It is based on an in-depth analysis of company documents presenting business ethics or codes of conduct. It explores different codified strategies of in-house reaction to economic crime. The focus is on the company as a moral actor and its commitment, as well as on corporate approaches towards implementing this commitment through codified regulations.

A Numerical Simulation Approach to Convection, Buoyancy Effect, Microfiltration and Flow Analysis as an Influential Lead for Designing and Dimensioning in MEMS

2011 ◽  
Vol 316-317 ◽  
pp. 127-133
Author(s):  
M. Rizwan Malik ◽  
Tie Lin Shi ◽  
Zi Rong Tang ◽  
Guang Lan Liao
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Flow Analysis ◽  
Geometrical Parameters ◽  
Buoyancy Effect ◽  
Simulation Approach ◽  
Post Processing ◽  
Wide Acceptance ◽  
Basic Concepts ◽  
Comprehensive Study

Multiphysics numerical simulation (MPNS) has certainly acquired a wide acceptance in the modeling, designing and fabrication fields and has been validated for various research applications. But it is important that the method should be thoroughly understood by students of the various fields. Keeping this aim in view, we demonstrate here the MPNS process as applied in several fields, such as: electrostatics, mechanics, chemistry, heat transfer and fluid flow. Four tasks are performed for fifteen hours in order to analyze simulation approaches such as modeling with geometrical parameters, meshing, solution and post-processing methods. Convection, buoyancy effects, microfiltration and flow analysis are investigated. This comprehensive study will enhance appreciation of the basic concepts of design and dimensioning of an object in MEMS for engineers, and help to guide workers in these fields when performing these tasks.

scholarly journals Modelling and Simulation of SF6 High-Voltage Circuit-Breakers - an Overview on Basics and Application of CFD Arc Simulation Tools

2017 ◽  
Vol 4 (3) ◽  
pp. 213-224
Author(s):  
F. Reichert ◽  
A. Petchanka ◽  
P. Freton ◽  
J. J. Gonzalez
Keyword(s):  
High Voltage ◽  
Development Process ◽  
Short Circuit ◽  
Circuit Switching ◽  
Simulation Tool ◽  
Circuit Breakers ◽  
Ansys Fluent ◽  
Case Examples ◽  
Simulation Tools ◽  
Complete Process

The paper gives an overview on the basics of CFD arc simulation tools with respect to the simulation of the fluid mechanical processes in the interrupter unit of SF<sub>6</sub> high-voltage circuit-breakers at no-load and short-circuit switching-off processes. On the example of SF<sub>6</sub> self-blast circuit-breakers the complete process from the analysis of the switching-off process to the creation of a modular simulation model consisting of several sub models is illustrated. Details to the modelling in the particular sub modules and to the implementation are given. The capability of a CFD arc simulation tool based on the program package ANSYS/FLUENT is demonstrated on the basis of selected simulation results. Furthermore case examples for the application of the presented CFD arc simulation tool in the development process of high-voltage circuit-breakers are given.

Simulation Research on the Impact Mole System in Working State

2011 ◽  
Vol 314-316 ◽  
pp. 562-565
Author(s):  
Xiao Lin Yu
Keyword(s):  
Simulation Model ◽  
Kinetic Parameters ◽  
Dynamic Simulation ◽  
System Simulation ◽  
Simulation Tool ◽  
Simulation Approach ◽  
Simulation Research ◽  
Dynamic Simulation Model ◽  
Theoretical Evidence ◽  
The Impact

The structure and working principles of impact mole system were analyzed, and the dynamic simulation model of working impact mole system was built by using the theories of aerodynamics and aerothermodynamic. The Hammerhead impact mole was simulated by means of MATLAB language and its system simulation tool SIMULINK, and the correctness of simulation model was verified. The results show that the simulation approach provides the theoretical evidence for analyzing the kinetic parameters of working impact mole and its application in actual projects.

The Idea of Femininity in Cinematic Rites of Passage in Bollywood Cinema

2020 ◽  
pp. 76-92
Author(s):  
Amrita Satapathy
Keyword(s):  
Rites Of Passage ◽  
New Age ◽  
Depth Analysis ◽  
Corporate Executive ◽  
English Speaking ◽  
Comprehensive Study ◽  
Feminine Roles

Most movies pre-2000 focused on feminine stereotypes conceived within the confined ambit of societal constructs. It is only with the millennium that scriptwriters became bolder in their conception of femininity. Directors and women actors have begun experimenting with unconventional feminine roles which are definitively plausible. The portrayals of new-age peripatetic women like Deepika Padukone's single and successful architect Piku Banerjee, living with her septuagenarian father or Paravathy's urbane, sophisticated, English speaking, corporate executive, the widowed Jaya Shashidharan, prove that fixities have given way to flexibilities in portrayal and form. This chapter seeks to undertake a comprehensive study of the idea of femininity in cinematic rites of passage through an in-depth analysis of Shoojit Sircar's Piku (2015) and Tanuja Chandra's Qarib Qarib Singlle (2017), and show how itinerant women protagonists are negotiating identities by challenging alterity.

Protest Camps in International context

2017 ◽  
Keyword(s):  
Democratic Politics ◽  
Political Leaders ◽  
International Context ◽  
The Public ◽  
Occupy Movement ◽  
Arab Uprisings ◽  
Depth Analysis ◽  
The World ◽  
Public Imagination ◽  
Comprehensive Study

Protest camps are a common and recurring feature of social movements around the world. From Tahrir to Taksim, acts of occupying squares, parks and streets together, have made protest camps into a key site of democratic politics in the 21st century. Since the Arab Uprisings and Occupy movement of 2011 brought protest camps to global attention, more and more protest camps have occurred in hundreds of cities and dozens of countries around the world. People camping out in protest captures the public imagination, making media headlines and often triggering violent police responses. Across the world political leaders and security chiefs are concerned about the prospect of protest camps emerging, while everyday people are pegging their hopes and dreams on this form of coming together, in public, to voice their dissent. This book provides an in depth analysis of this new form of protest. With seventeen case studies from all around the world, it provides the most comprehensive study of protest camps to date.

scholarly journals An Agent-Based Factory Simulation Tool to Assess Energy Consumption in Decentralized Manufacturing Systems: Agent Types and their Tasks

2017 ◽  
Vol 869 ◽  
pp. 174-179
Author(s):  
Rebecca Ilsen ◽  
Jan Christian Aurich
Keyword(s):  
Energy Consumption ◽  
Manufacturing Systems ◽  
Energy Costs ◽  
Simulation Tool ◽  
Energy Prices ◽  
Simulation Approach ◽  
Agent Based ◽  
Manufacturing Control ◽  
Related Information ◽  
Planning Processes

Rising energy costs and volatile energy prices are motivation to integrate energy consumption with planning processes in manufacturing. Since centralized approaches for Manufacturing Control (MC) tend to ignore local energy related information, it is necessary to examine the potential of decentralized MC approaches. For this purpose, a factory simulation tool has been implemented. This paper presents the underlying assumptions behind the simulation tool and how the MC algorithms it uses are implemented using an agent-based simulation approach.

scholarly journals Experimental and Numerical Simulations of 3D-Printed Polycaprolactone Scaffolds for Bone Tissue Engineering Applications

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3546
Author(s):  
Zhanyan Xu ◽  
Abdalla M. Omar ◽  
Paulo Bartolo
Keyword(s):  
Tissue Engineering ◽  
Cell Attachment ◽  
Mechanical Design ◽  
Biomechanical Properties ◽  
Simulation Tool ◽  
Simulation Approach ◽  
Bone Scaffolds ◽  
Compressive Loads ◽  
3D Printed ◽  
Highly Porous

Ideal bone scaffolds for tissue engineering should be highly porous allowing cell attachment, spreading, and differentiation and presenting appropriate biomechanical properties. These antagonistic characteristics usually require extensive experimental work to achieve optimised balanced properties. This paper presents a simulation approach to determine the mechanical behaviour of bone scaffolds allowing the compressive modulus and the deformation mechanisms to be predicted. Polycaprolactone scaffolds with regular square pores and different porosities were considered. Scaffolds were also printed using an extrusion-based additive manufacturing and assessed under compressive loads. Similar designs were used for both simulation and fabrication steps. A good correlation between numerical and experimental results was obtained, highlighting the suitability of the simulation tool for the mechanical design of 3D-printed bone scaffolds.

Progress In The Practical Application Of Automated Image Analysis To Tem Negatives

1977 ◽  
Vol 35 ◽  
pp. 214-217
Author(s):  
F. A. Heckman ◽  
E. Redman ◽  
J.E. Connolly
Keyword(s):  
Image Analysis ◽  
Image Quality ◽  
Exposure Time ◽  
Image Contrast ◽  
Automated Image Analysis ◽  
Practical Application ◽  
Factors Affecting ◽  
High Image Quality ◽  
Qualitative Evidence ◽  
Comprehensive Study

In our initial publication on this subject1) we reported results demonstrating that contrast is the most important factor in producing the high image quality required for reliable image analysis. We also listed the factors which enhance contrast in order of the experimentally determined magnitude of their effect. The two most powerful factors affecting image contrast attainable with sheet film are beam intensity and KV. At that time we had only qualitative evidence for the ranking of enhancing factors. Later we carried out the densitometric measurements which led to the results outlined below.Meaningful evaluations of the cause-effect relationships among the considerable number of variables in preparing EM negatives depend on doing things in a systematic way, varying only one parameter at a time. Unless otherwise noted, we adhered to the following procedure evolved during our comprehensive study:Philips EM-300; 30μ objective aperature; magnification 7000- 12000X, exposure time 1 second, anti-contamination device operating.

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