Methodology for accurate extrapolation of InGaP/GaAs HBT safe operating area (SOA) for variations in emitter area and ballast resistor size

2014 ◽  
Vol 54 (12) ◽  
pp. 2682-2687
Author(s):  
Robert S. Howell ◽  
Randall Lewis ◽  
H. George Henry ◽  
Harold Hearne ◽  
Deas Brown ◽  
...  
Keyword(s):  
Ballast Resistor ◽  
Safe Operating

Circuit-Level Safe-Operating-Area of a High-Speed SiGe BiCMOS Wireline Driver

2020 ◽  
Author(s):  
Arya Moradinia ◽  
Rafael P. Martinez ◽  
Jeffrey W. Teng ◽  
Nelson Sepulveda-Ramos ◽  
Harrison Lee ◽  
...  
Keyword(s):  
High Speed ◽  
Sige Bicmos ◽  
Safe Operating

A digital contract for restoration of the Earth System mediated by a Planetary Boundary Exchange Unit

2021 ◽  
pp. 205301962098727
Author(s):  
Orfeu Bertolami ◽  
Frederico Francisco
Keyword(s):  
Earth System ◽  
New Governance ◽  
Validation Process ◽  
Operational Conditions ◽  
Blockchain Technology ◽  
The Earth ◽  
Optimal Functioning ◽  
Operating Space ◽  
Exchange Unit ◽  
Safe Operating

In this paper, we propose a new governance paradigm for managing the Earth System based on a digital contract inspired on blockchain technology. This proposal allows for a radical decentralisation of the procedures of controlling, maintaining and restoring ecosystems by a set of networks willing to engage in improving the operational conditions of local ecosystems so to contribute to an optimal functioning of the Earth System. These procedures are aimed to improve local Planetary Boundary parameters so that they approach the optimal Holocene reference values, the so-called Safe Operating Space, via a reciprocal validation process and an exchange unit that internalises the state of the Earth System.

Autonomous Vehicle Safe Operating Speeds on the Automated Skyway Express in Jacksonville, Florida

2021 ◽  
pp. 036119812199183
Author(s):  
Andrew E. Loken ◽  
Joshua S. Steelman ◽  
Scott K. Rosenbaugh ◽  
Ronald K. Faller
Keyword(s):  
Autonomous Vehicles ◽  
Autonomous Vehicle ◽  
Physical Characteristics ◽  
Vehicle Stability ◽  
Conservative Method ◽  
Passenger Vehicles ◽  
Structural Capacity ◽  
Impact Angles ◽  
Unconventional Methods ◽  
Safe Operating

Autonomous vehicles (AV) differ significantly from traditional passenger vehicles in both their behavior and physical characteristics. As such, the validity of the guidance provided in the Manual for Assessing Safety Hardware, Second Edition (MASH 2016) is questionable in AV applications. Impact angles, speeds, and vehicle weights specified in MASH 2016 are inextricably linked to the traditional vehicles underlying the estimates. For AV applications, these parameters must be estimated from the ground up, stepping outside the guidance of MASH 2016. In this paper, a conservative method for evaluating existing infrastructure to support AV traffic is proposed. The method integrates traditional structural analyses with unconventional methods of estimating impact conditions. This methodology was developed for the Jacksonville Transportation Authority, who, when faced with unique challenges in maintaining and expanding their Automated Skyway Express, opted to convert the system from monorail to AV traffic. Leading AV developers were surveyed to develop a portfolio of potential candidates for the conversion. Estimated impact conditions were then compared against the capacity of the system’s existing concrete parapets. Ultimately, safe operating speeds for each AV candidate were recommended on the bases of structural capacity and vehicle stability. All but one AV candidate were deemed capable of safely operating at the desired speed of 25 mph without any modifications to the barrier. Although the methodology was developed for a particular case, it is applicable to future implementations of AVs on existing infrastructure, provided the roadway is confined similarly to the Skyway deck.

Unified Mechanism for Graphene FET's Electrothermal Breakdown and Its Implications on Safe Operating Limits

2021 ◽  
pp. 1-8
Author(s):  
Abhishek Mishra ◽  
Adil Meersha ◽  
N. K. Kranthi ◽  
Jeevesh Kumar ◽  
N. S. Veenadhari Bellamkonda ◽  
...  
Keyword(s):  
Operating Limits ◽  
Safe Operating ◽  
Electrothermal Breakdown

Recent Advances in Lower Bound Shakedown Analysis

2009 ◽  
Author(s):  
Dieter Weichert ◽  
Abdelkader Hachemi
Keyword(s):  
Finite Element ◽  
Lower Bound ◽  
Process Engineering ◽  
Operating Conditions ◽  
Structural Elements ◽  
Shakedown Analysis ◽  
Material Models ◽  
Practical Engineering ◽  
Safe Operating ◽  
New Algorithms

The special interest in lower bound shakedown analysis is that it provides, at least in principle, safe operating conditions for sensitive structures or structural elements under fluctuating thermo-mechanical loading as to be found in power- and process engineering. In this paper achievements obtained over the last years to introduce more sophisticated material models into the framework of shakedown analysis are developed. Also new algorithms will be presented that allow using the addressed numerical methods as post-processor for commercial finite element codes. Examples from practical engineering will illustrate the potential of the methodology.

Safe operating area for 1200-V nonlatchup bipolar-mode MOSFET's

1987 ◽  
Vol 34 (2) ◽  
pp. 351-355 ◽  
Author(s):  
A. Nakagawa ◽  
Y. Yamaguchi ◽  
K. Watanabe ◽  
H. Ohashi
Keyword(s):  
Bipolar Mode ◽  
Safe Operating

Renewable energy powered membrane technology: Safe operating window of a brackish water desalination system

2014 ◽  
Vol 468 ◽  
pp. 400-409 ◽  
Author(s):  
Bryce S. Richards ◽  
Gavin L. Park ◽  
Thomas Pietzsch ◽  
Andrea I. Schäfer
Keyword(s):  
Renewable Energy ◽  
Brackish Water ◽  
Membrane Technology ◽  
Water Desalination ◽  
Operating Window ◽  
Safe Operating
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