scholarly journals A Thermally Stable Quasi-CMOS Bipolar Logic

Author(s):  
Wieslaw Kuzmicz

Logic gates made of pairs of NPN and PNP bipolar transistors, similar to CMOS logic gates, have been proposed and patented long ago but did not find any practical application until now. Other bipolar technologies (TTL, TTL-S, ECL), once the technologies of choice for digital systems, were abandoned and superseded by CMOS. In this paper it is shown that now, when truly com-plementary pairs of bipolar transistors can be made, properly biased bipolar gates similar to CMOS gates are feasible, can be thermally stable and find practical applications.

Electronics ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 6
Author(s):  
Wieslaw Kuzmicz

Logic gates made of pairs of NPN and PNP bipolar transistors, similar to CMOS logic gates, have been proposed and patented long ago but did not find any practical application until now. Other bipolar technologies (TTL, TTL-S, ECL), once the technologies of choice for digital systems, were abandoned and superseded by CMOS. In this paper it is shown that now, when truly complementary pairs of bipolar transistors can be made, properly biased bipolar gates similar to CMOS gates are feasible, can be thermally stable and find practical applications.


GeroPsych ◽  
2021 ◽  
Author(s):  
Anamaria Depner

Abstract. One of the central objectives of gerontology is to provide categories and criteria for practical application. In contrast, cultural anthropology describes and interprets processes observed in various practical contexts but does not aim to create practical applications. For concepts such as “culture,” this discrepancy in goals might be the source of misunderstandings and even conflicting definitions. Bringing together the perspectives of both disciplines on culture, this paper illustrates the pitfalls of an understanding of culture grounded in geographical origins. It focuses on the situation in Germany and thereby addresses a universal problem using certain conceptions of culture in the context of aging and migration. In conclusion, it presents alternative approaches, while also addressing methodological issues.


1996 ◽  
Vol 20 (2) ◽  
pp. 122-128 ◽  
Author(s):  
J. Stallard ◽  
R. E. Major ◽  
S. E. Farmer

Whereas walking for paraplegic patients is now a routine clinical option, ambulation for heavily handicapped cerebral palsy patients is less well established. There are good reasons for supposing that therapeutic benefits similar to that achieved with paraplegic patients are possible for this group. However, the biomechanical problems which must be overcome are different and in many ways more difficult to address. The most important factors are identified as appropriate truncal support, control of abduction/adduction, rotation and flexion range at the hip, and of knee flexion. A means of applying these controls is described as being a combination of a walking frame and orthosis. The special walking frame provides adjustable support at thoracic, abdominal and sacral levels and incorporates castor steering and upper limb support. Controls on lower limb movements are applied through a special orthosis which has a readily available variation of specification to accommodate the wide range of conditions met in cerebral palsy. Practical application of a prototype system has shown that it can enable patients to walk unaided. However, in most cases it was used indoors only. Evaluation of the experience in applying the system has enabled the fundamental principles to permit more practical applications to be defined.


Author(s):  
Nurul I. Sarkar ◽  
Khaleel I. Petrus

Boolean algebra, minimization of Boolean expressions, and logic gates are often included as subjects in electronics, computer science, information technology, and engineering courses as computer hardware and digital systems are a fundamental component of IT systems today. We believe that students learn minimization of Boolean expressions better if they are given interactive practical learning activities that illustrate theoretical concepts. This chapter describes the development and use of a software tool (named LOGIC-Minimiser) as an aid to enhance teaching and learning minimization of Boolean expressions.


Author(s):  
Sherif A. Tella ◽  
Mohammad I. Younis

Abstract Due to the increasing demand for smarter solutions and embedded systems, MEMS resonator-based computing devices have been under considerable attention for their simplicity and prospect of low computational power. However, most complex logic functions require multi-input/output lines that are cascadable such that the outputs of one device can be used as inputs into subsequent devices for practical applications, and this is a current limitation for MEMS logic devices. In this study, we demonstrate multi-inputs/outputs half-adder function, AND, and XOR logic gates on the basis of activating and deactivating the localization and delocalization of the multi vibrational modes of a single MEMS resonator with improved energy efficiency.


Electronics ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 327
Author(s):  
Zongyu Cao ◽  
Wanyou Lv ◽  
Yanhong Huang ◽  
Jianqi Shi ◽  
Qin Li

With rapid technological advances in airborne control systems, it has become imperative to ensure the reliability, robustness, and adaptability of airborne software since failure of these software could result in catastrophic loss of property and life. DO-333 is a supplement to the DO-178C standard, which is dedicated to guiding the application of formal methods in the review and analysis of airborne software development processes. However, DO-333 lacks theoretical guidance on how to choose appropriate formal methods and tools to achieve verification objectives at each stage of the verification process, thereby limiting their practical application. This paper is intended to illustrate the formal methods and tools available in the verification process to lay down a general guide for the formal development and verification of airborne software. We utilized the Air Data Computer (ADC) software as the research object and applied different formal methods to verify software lifecycle artifacts. This example explains how to apply formal methods in practical applications and proves the effectiveness of formal methods in the verification of airborne software.


2019 ◽  
Vol 166 ◽  
pp. 443-450 ◽  
Author(s):  
Pawan Kumar ◽  
Dheeraj Arya ◽  
Deepak Nain ◽  
Ajeet Singh ◽  
Amrita Ghosh ◽  
...  

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Celso Francisco de Moraes ◽  
Messias Borges Silva ◽  
Rapinder Sawhney

PurposeThe purpose of this paper is to report the first practical applications of FCAUP (Framework for Conformity Assessment inspired by the Uncertainty Principle) carried out using a pilot implementation in a boat trailer manufacturer company in Maryville, Tennessee, USA and a practical application in a metrology company in São José dos Campos, São Paulo, Brazil.Design/methodology/approachField studies have been conducted in two different companies: a pilot implementation during the preparation activities of the acceptance inspection of finished products and a practical application during the internal audit related to the quality management system.Findings(1) partial double inspection is advantageous in conformity assessment; (2) a structured procedure tends to reduce the risks arising from the use of partial double inspection; (3) the recommended amount of double inspections is directly proportional to the uncertainty involved in the process and it is inversely proportional to the degree of trust in a presumed conformity status.Research limitations/implicationsThis novel framework is for practitioners in manufacturing industries and test laboratories.Practical implicationsThe results of these practical applications suggest that FCAUP is a consistent approach to be used in several categories of conformity assessment in manufacturing industries and test laboratories due to the balance between result and time (cost).Originality/valueThis new framework, named FCAUP, for planning and executing conformity assessment activities has been introduced in a theoretical study published by Moraes and Silva (2018) and it is based on an analogy with the Uncertainty Principle of Quantum Mechanics.


2014 ◽  
Vol 2 (18) ◽  
pp. 6525-6531 ◽  
Author(s):  
G. Hayase ◽  
K. Kugimiya ◽  
M. Ogawa ◽  
Y. Kodera ◽  
K. Kanamori ◽  
...  

The relationship between the thermal conductivity, gas pressure and pore size of polymethylsilsesquioxane aerogels and xerogels has been investigated for practical applications.


RSC Advances ◽  
2016 ◽  
Vol 6 (88) ◽  
pp. 85091-85099 ◽  
Author(s):  
Seong Youl Lee ◽  
Cheal Kim

A selective chemosensor with practical applications was developed for the colorimetric detection of S2− in a near-perfect aqueous solution.


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