TEMPERATURE MODELING OF GaAs DCFL

1992 ◽  
Vol 03 (02) ◽  
pp. 171-199 ◽  
Author(s):  
JEFF CONGER ◽  
ANDRZEJ PECZALSKI ◽  
MICHAEL S. SHUR
Keyword(s):  
Temperature Dependence ◽  
Power Dissipation ◽  
Simple Structure ◽  
Power Performance ◽  
Performance Control ◽  
Temperature Modeling ◽  
Accurate Temperature ◽  
And Performance

Direct-Coupled FET Logic (DCFL) is an important logic family for LSI GaAs FET circuits because of its simple structure and good speed/power performance. Since it is especially sensitive to temperature shifts of performance, accurate temperature modeling is critical for design of DCFL circuits. Using a version of SPICE modified to include FET temperature dependence, the performance of DCFL is simulated over temperature and compared with measured results. In addition, an improved version of DCFL known as E-E Logic (Enhancement-Enhancement Logic) is modeled over temperature. The performance of E-E Logic is compared to DCFL with depletion-mode FET and saturated resistor loads over temperature. E-E Logic is found to offer improved yield, power dissipation and performance control compared to conventional DCFL.

AN EFFECTIVE CONTROL FLOW CHECKING METHOD FOR MULTITASK PROCESSING IN HARSH ENVIRONMENTS

2013 ◽  
Vol 22 (08) ◽  
pp. 1350067 ◽  
Author(s):  
SEYYED AMIR ASGHARI ◽  
ATENA ABDI ◽  
OKYAY KAYNAK ◽  
HASSAN TAHERI ◽  
HOSSEIN PEDRAM
Keyword(s):  
Error Detection ◽  
Optimal Solution ◽  
Control Flow ◽  
Simultaneous Optimization ◽  
Harsh Environments ◽  
Effective Control ◽  
Power Performance ◽  
Single Event Upsets ◽  
Novel Method ◽  
And Performance

Electronic equipment used in harsh environments such as space has to cope with many threats. One major threat is the intensive radiation which gives rise to Single Event Upsets (SEU) that lead to control flow errors and data errors. In the design of embedded systems to be used in space, the use of radiation tolerant equipment may therefore be a necessity. However, even if the higher cost of such a choice is not a problem, the efficiency of such equipment is lower than the COTS equipment. Therefore, the use of COTS with appropriate measures to handle the threats may be the optimal solution, in which a simultaneous optimization is carried out for power, performance, reliability and cost. In this paper, a novel method is presented for control flow error detection in multitask environments with less memory and performance overheads as compared to other methods seen in the literature.

Structure and performance control of high‐damping bio‐based thermoplastic polyurethane

2021 ◽  
pp. 52059
Author(s):  
Xi Hou ◽  
Liwen Sun ◽  
Wei Wei ◽  
Darlene K. Taylor ◽  
Shengpei Su ◽  
...  
Keyword(s):  
Thermoplastic Polyurethane ◽  
Performance Control ◽  
And Performance

Inverse Wheel Dynamics

2006 ◽  
Author(s):  
V. V. Vantsevich
Keyword(s):  
Angular Velocity ◽  
Power Distribution ◽  
Vehicle Dynamics ◽  
Inverse Dynamics ◽  
Equation Of Motion ◽  
Torque Control ◽  
Vehicle Performance ◽  
Performance Control ◽  
Wheel Torque ◽  
And Performance

Wheel dynamics is a significant component of vehicle dynamics and performance analysis. This paper presents an innovative method of studying wheel dynamics and wheel performance control based on the inverse dynamics formulation of the problem. Such an approach opens up a new way to the optimization and control of both vehicle dynamics and vehicle performance by optimizing and controlling power distribution to the drive wheels. An equation of motion of a wheel is derived first from the wheel power balance equation that makes the equation more general. This equation of motion is considered the basis for studying both direct and inverse wheel dynamics. The development of a control strategy on the basis of the inverse wheel dynamics approach includes wheel torque control that provides a wheel with both the referred angular velocity and rolling radius and also with the required functionals of quality. An algorithm for controlling the angular velocity is presented as the first part in the implementation of the developed strategy of the inverse wheel dynamics/performance control.

Stability Enhancement for Cold Field Emitter for Reliable Operation of the Micro-Column System

2007 ◽  
Vol 544-545 ◽  
pp. 829-832
Author(s):  
J.H. Kim ◽  
Seung Joon Ahn ◽  
Chul Geun Park ◽  
Ho Seob Kim ◽  
Dae Wook Kim ◽  
...  
Keyword(s):  
Simple Structure ◽  
Potential Candidate ◽  
High Brightness ◽  
Electron Emitter ◽  
Column System ◽  
Long Lifetime ◽  
And Performance ◽  
The Stability ◽  
Stability Enhancement ◽  
Next Generation Lithography

Recently, the micro-column has been intensively studied as a potential candidate for next-generation lithography with high-throughput capability. The micro-column has a simple structure with an electron emitter, micro-lenses, a double octupole deflector, and an Einzel lens. The structure and performance of the micro-column are dependent on the characteristics of the electron emitter. The electron emitter should have several prerequisites such as stable emission of electrons, high brightness and long lifetime. It is also necessary for the emitted electrons to have sufficiently low kinetic energy, which can be achieved by using a very sharp emission tip. In this work, we made an extremely sharp tip by electro-chemically etching the tungsten wire in 10 % KOH solution. From the Fowler-Nordheim plot, the effective radius of the tip was found to be as small as ~12 nm, which is consistent with the value measured by SEM. We also discovered that the stability of emission can be enhanced very much through thermal treatment of the tip end by irradiating the Nd:YAG laser pulse

Idiosyncratic cellulose acetate nanocomposite membranes: synthesis and performance control study for desalination

2019 ◽  
pp. 1-17
Author(s):  
Amina Afzal ◽  
Muhammad Shahid Rafique ◽  
Sadia Sagar Iqbal ◽  
Shariqa Hassan Butt ◽  
Umber Kalsoom ◽  
...  
Keyword(s):  
Cellulose Acetate ◽  
Nanocomposite Membranes ◽  
Performance Control ◽  
And Performance ◽  
Control Study

scholarly journals The Role of Velocity Based Training in the Strength Periodization for Modern Athletes

2018 ◽  
Vol 3 (4) ◽  
pp. 55 ◽  
Author(s):  
Aristide Guerriero ◽  
Carlo Varalda ◽  
Maria Piacentini
Keyword(s):  
Resistance Training ◽  
High Performance ◽  
Daily Routine ◽  
Power Performance ◽  
Strength And Conditioning ◽  
Measurement Units ◽  
And Performance ◽  
Correct Understanding ◽  
Level Of Effort

Resistance training (RT) is considered the most important method to improve the athlete’s strength and rate of force development (RFD). In the last decade, the importance of monitoring velocity during RT has drastically grown, because of an increased availability of linear position transducers (LPT) and inertial measurement units (IMU). The purpose of this review is to analyze the existing literature on testing techniques and performance strategies used to enhance strength and power performance of elite athletes, by monitoring the velocity of resistance training. The authors focus in particular on the level of effort of resistance training defined by velocity; how the loss of velocity correlates with the degree of fatigue and how it can be used to enhance the performance of competitive athletes; the use of LPT as part of the daily routine of the strength and conditioning programs in competitive sport. It is therefore critical for the sports scientists to have a correct understanding of the basic concepts of the velocity-based training and their application to elite sports. The ultimate goal is to give some indications on the velocity-based resistance training integration in the programs of different sports in the high performance environment.

scholarly journals The volatilization behaviour of typical fluorine-containing slag in steelmaking

2020 ◽  
Vol 7 (8) ◽  
pp. 200704
Author(s):  
Zhongyu Zhao ◽  
Junxue Zhao ◽  
Zexin Tan ◽  
Boqiao Qu ◽  
Yaru Cui
Keyword(s):  
Continuous Casting ◽  
Eutectic Point ◽  
Slag System ◽  
Refining Slag ◽  
Performance Control ◽  
Second Stage ◽  
Mould Flux ◽  
And Performance ◽  
Continuous Casting Mould ◽  
Two Stages

It was taken as typical steelmaking fluorine-containing slag systems with the remelting electroslag, continuous casting mould flux and refining slag. The volatilization behaviour of each slag system was analysed by thermogravimetric (TG) and mass spectrometry (MS) detection. The results showed that the remelting electroslag volatilized significantly above 1300°C and the volatiles were mainly CaF 2 , MgF 2 with a small amount of SiF 4 and AlF 3 ; the continuous casting mould flux volatilization was divided into two stages, in the first stage (500°C∼800°C), CaF 2 and Na 2 O reacted to form NaF, and in the second stage (greater than 1200°C), the CaF 2 evaporation was highlighted; for CaF 2 -CaO-based refining slag, the volatilization was the most significant at the eutectic point 84% CaF 2 –16% CaO, and the volatility can be reduced by adding 5% SiO 2 . This research will be guiding significance for the composition and performance control of fluorine-containing slag and metallurgical environmental protection in the steelmaking process.

WATT MATTERS MOST? DESIGN SPACE EXPLORATION OF HIGH-PERFORMANCE MICROPROCESSORS FOR POWER-PERFORMANCE EFFICIENCY

2007 ◽  
Vol 16 (03) ◽  
pp. 357-378
Author(s):  
PEDRO TRANCOSO
Keyword(s):  
High Performance ◽  
Design Space Exploration ◽  
High Sensitivity ◽  
Clock Frequency ◽  
Power Performance ◽  
Large Power ◽  
Multiple Parameters ◽  
And Performance ◽  
The One ◽  
Power Awareness

Computer systems have evolved significantly in the last years leading to high-performance systems. This, however, has come with a cost of large power dissipation. As such, power-awareness has become a major factor in processor design. Therefore, it is important to have a complete understanding of the power and performance behavior of all processor components. In order to achieve this, the current work presents a comprehensive analysis of power-performance efficiency for different high-end microarchitecture configurations using three different workloads: multimedia, scientific, and database. The objectives of this work are: (1) to analyze and compare the power-performance efficiency for different workloads; (2) to present a sensitivity analysis for the microarchitecture parameters in order to identify which ones are more sensitive to changes in terms of power-performance efficiency; and (3) to propose power-performance efficient configurations for each workload. The simulation results show that the multimedia workload is the one achieving the highest efficiency but the database workload is the most sensitive to parameter changes. In addition, the results also show that the parameter sensitivity depends significantly on the workload. While the issue width and clock frequency present very high sensitivity across all workloads (approximately 100%), for the database workload, the first-level instruction cache size shows an even higher sensitivity (149%). The correct configuration of these microarchitecture parameters is essential. A careless configuration of a single parameter from a baseline setup may result in a loss of the power-performance efficiency of up to 99%. Finally, carefully tuning multiple parameters simultaneously may result in gains up to 154% over the power-performance efficiency of the baseline configuration.

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