AUTOMATED RESISTANCE TESTER OF ELECTRONIC MEANS TO ELECTROSTATIC DISCHARGE

2021 ◽  
pp. 51-58
Author(s):  
М.А. Ромащенко ◽  
Д.С. Сеимова ◽  
М.А. Иванов
Keyword(s):  
Electromagnetic Interference ◽  
Electrostatic Discharge ◽  
Electronic Devices ◽  
International Standards ◽  
Auxiliary Equipment ◽  
Protective Mechanisms ◽  
Electrostatic Discharges ◽  
Electronic Products ◽  
And Performance

Рассмотрены основные подходы проверки функциональности электронных средств при воздействии электростатического разряда, а также представлены основные этапы разработки автоматизированного тестера устойчивости электронных средств к электростатическому разряду. Электростатический разряд является одним из основных факторов, способствующих снижению надежности и производительности электронных устройств. Предложен подход к повышению качества разработки электронных изделий на основе автоматизированного устройства для тестирования электронных средств на устойчивость к электростатическим разрядам. Представлена концептуальная структура программно-аппаратного комплекса для оценки влияния электростатического разряда на электронные средства. В конструкции испытательного генератора предусмотрены защитные механизмы, предотвращающие создание непреднамеренных излучаемых или кондуктивных электромагнитных помех импульсного или непрерывного характера для исключения паразитных эффектов, способных оказать влияние на испытуемое или вспомогательное оборудование. Целью исследования, в рамках которого происходила разработка тестирующего устройства, является повышение надежности функционирования электронных средств и приборов при воздействии на них электростатических разрядов. Благодаря предлагаемому подходу становится возможным обеспечить эффективность тестирования конструкций электронных средств на устойчивость к электростатическому разряду на основе комплексных методов оптимального проектирования с учетом обеспечения требований международных стандартов The article discusses the main approaches to checking the functionality of electronic devices when exposed to electrostatic discharge. Electrostatic discharge (ESD) is a major contributor to the reliability and performance of electronic devices. This paper proposes an approach to improving the quality of development of electronic products based on an automated device for testing electronic devices for resistance to electrostatic discharges. We present the conceptual structure of a software and hardware complex for assessing the effect of electrostatic discharge on electronic means. The test generator is designed with protective mechanisms to prevent the creation of unintentional radiated or conducted electromagnetic interference of a pulsed or continuous nature to eliminate parasitic effects that could affect the tested or auxiliary equipment. The purpose of the study, within the framework of which the development of the testing device took place, is to increase the reliability of the functioning of electronic devices and devices when exposed to electrostatic discharges. Thanks to the proposed approach, it becomes possible to ensure the effectiveness of testing the structures of electronic devices for resistance to electrostatic discharge on the basis of complex methods of optimal design, taking into account the requirements of international standards

Re-visioning social work education: A nonexclusive challenge for the United Kingdom

2016 ◽  
Vol 61 (2) ◽  
pp. 302-307
Author(s):  
Carolina Muñoz-Guzmán
Keyword(s):  
United Kingdom ◽  
Social Work ◽  
Social Work Education ◽  
International Standards ◽  
The United Kingdom ◽  
Vacancy Rates ◽  
And Performance ◽  
The Uk ◽  
Work Education

The analyses of the contesting moment social work faces in the United Kingdom bring to discussion many claims that appear familiar to the context and performance of social work in Chile. This note compares the UK assessment of social work education and professional practice with Chilean social work, concluding that rising demand, high vacancy rates and reliance on agency staff, quality of recruits and training, and low status of the profession are issues shared by both countries, raising the question of how to improve international standards of the profession.

scholarly journals Testing of immunity to electrostatic discharge of electronic devices and devices electrically initiated

2019 ◽  
Vol XXII (2) ◽  
pp. 337-342
Author(s):  
Ciocioi I.
Keyword(s):  
Human Body ◽  
Electromagnetic Compatibility ◽  
Electrostatic Discharge ◽  
Electronic Devices ◽  
Point Of View ◽  
Static Electricity ◽  
Transient Currents ◽  
Electrostatic Discharges

Electrostatic discharges of bodies loaded with static electricity are accompanied by the emergence of tension and transient currents, which can cause damage to electronic devices and the ignition of electrically initiated devices. In electromagnetic compatibility a great importance (from the point of view of electrostatic discharge) has the discharge of human body.

scholarly journals FLC based adjustable speed drives for power quality enhancement

2010 ◽  
Vol 7 (2) ◽  
pp. 217-229 ◽  
Author(s):  
Darly Sukumar ◽  
Vanaja Ranjan ◽  
Justus Rabi
Keyword(s):  
Electromagnetic Interference ◽  
High Reliability ◽  
Harmonic Distortion ◽  
Point Of View ◽  
New Approach ◽  
Voltage Range ◽  
Ac Drives ◽  
Three Phase ◽  
And Performance

This study describes a new approach based on fuzzy algorithm to suppress the current harmonic contents in the output of an inverter. Inverter system using fuzzy controllers provide ride-through capability during voltage sags, reduces harmonics, improves power factor and high reliability, less electromagnetic interference noise, low common mode noise and extends output voltage range. A feasible test is implemented by building a model of three-phase impedance source inverter, which is designed and controlled on the basis of proposed considerations. It is verified from the practical point of view that these new approaches are more effective and acceptable to minimize the harmonic distortion and improves the quality of power. Due to the complex algorithm, their realization often calls for a compromise between cost and performance. The proposed optimizing strategies may be applied in variable-frequency dc-ac inverters, UPSs, and ac drives.

Educational STEM designing of virtual and real devices on the Arduino platform

2020 ◽  
pp. 17-27
Author(s):  
S. G. Grigoriev ◽  
M. V. Kurnosenko ◽  
A. M. Kostyuk
Keyword(s):  
Virtual Environments ◽  
Electronic Devices ◽  
Practical Training ◽  
Full Time ◽  
Stem Design ◽  
Face To Face ◽  
Interdisciplinary Knowledge ◽  
Virtual Modeling ◽  
Surface Mounting

The article discusses possible forms of educational STEM projects in the field of electronics and device control using Arduino controllers. As you know, the implementation of such STEM projects can be carried out not only using various electronic constructors, but also using virtual modeling environments. The knowledge obtained during modeling in virtual environments makes it possible to increase the efficiency of face-to-face practical training with a real constructor, and to improve the quality of students’ knowledge. The use of virtual modeling environments in combination with the use of real constructors provides links between distance and full-time learning. A real constructors can be used simultaneously by both the teacher and the student, jointly practicing the features of solving practical problems. The article provides examples of using a virtual environment for preliminary prototyping of circuits available in the documentation for electronic constructors, to familiarize students with the basics of designing and assembling electronic circuits using the surface mounting method and on a breadboard, as well as programming controllers on the Arduino platform that control electronic devices. This approach allows students to accelerate the assimilation of various interdisciplinary knowledge in the field of natural sciences using STEM design.

The Changing Patterns of North Korea’s International Film Co-Productions Since the 1980s: A Global Value Chain Approach

2020 ◽  
pp. 83-108
Author(s):  
Moon Hwy-Chang ◽  
Wenyang Yin
Keyword(s):  
Value Chain ◽  
North Korea ◽  
Film Industry ◽  
International Standards ◽  
The Political ◽  
Global Value Chain ◽  
Comprehensive Understanding ◽  
Changing Patterns ◽  
Film Productions

Although North Korea is one of the most closed countries in the world, it has long been pursuing international cooperation with other countries in order to upgrade the quality of its film industry to international standards. Preceding studies on this topic have mainly focused on the political influences behind filmmaking in general and very few studies have exclusively dealt with North Korea’s international co-productions. In this respect, in order to develop a comprehensive understanding of the internalization strategy of North Korea’s film productions, this paper uses the global value chain as a framework for analysis. This approach helps understand the internationalization pattern of each value chain activity of film co-productions in terms of the film location and the methods for collaborating with foreign partners. By dividing the evolution of North Korea’s international co-productions into three periods since the 1980s, this paper finds that although North Korea has shown mixed results with different aspects of the film value chain, it has generally improved its internationalization over the three periods. This paper further provides strategic directions for North Korea by learning some of the successful Chinese experiences in the film sector regarding collaboration with foreign partners—to foster a win-win situation for all involved parties.

LIGHTING AND PERFORMANCE: AN ANALYSIS ON LIGHTING EFFICIENCY OF ARCHITECTURE STUDIO

2019 ◽  
Vol 1 (1) ◽  
pp. 92
Author(s):  
Fazidah Hanim Husain
Keyword(s):  
Learning Environment ◽  
Comfort Level ◽  
Artificial Lighting ◽  
Level Measurement ◽  
Acceptable Range ◽  
Creative Learning ◽  
Illuminance Level ◽  
And Performance ◽  
Effect Of Light

Lighting is one of the key elements in any space and building infrastructure. Good design for an area in the building requires sufficient light that contributes to the efficiency of the activities. The correct method allows natural light to transmit, reduce heat and glare in providing a conducive learning environment. Light plays a significant influence to the quality of space and contributes focus of the students in an architecture studio. Previous research has shown that the effect of light also controlled emotions, behavior, and mood of the students. The operations of artificial lighting that have been used most of the time in an architecture studio during day and night may create lavishness and inadequacy at the same time. Therefore, this paper focuses on the identifying the quality of light for the architecture studio in UiTM (Perak), to instill a creative learning environment. Several methodologies adopted in this study such as illuminance level measurement using lux meter (LM-8100), and a questionnaire survey in gauging the lighting comfort level from students’ perspective. The study revealed that the illuminance level in the architecture studio is insufficient and not in the acceptable range stated in the Malaysian: Standards 1525:2007 and  not evenly distributed.  The study also concluded that the current studio environment is not condusive and appears monotonous. 

Strategic threats to energy security as risks of quality of people's life

2020 ◽  
Vol 16 (4) ◽  
pp. 730-744
Author(s):  
V.I. Loktionov
Keyword(s):  
Quality Of Life ◽  
Energy Security ◽  
Well Being ◽  
Scientific Methods ◽  
Analysis And Synthesis ◽  
General Scientific ◽  
And Performance ◽  
Economic Well Being ◽  
The Way

Subject. The article reviews the way strategic threats to energy security influence the quality of people's life. Objectives. The study unfolds the theory of analyzing strategic threats to energy security by covering the matter of quality of people's life. Methods. To analyze the way strategic threats to energy security spread across cross-sectoral commodity and production chains and influences quality of people's living, I applied the factor analysis and general scientific methods of analysis and synthesis. Results. I suggest interpreting strategic threats to energy security as risks of people's quality of life due to a reduction in the volume of energy supply. I identified mechanisms reflecting how the fuel and energy complex and its development influence the quality of people's life. The article sets out the method to assess such quality-of-life risks arising from strategic threats to energy security. Conclusions and Relevance. In the current geopolitical situation, strategic threats to energy security cause long-standing adverse consequences for the quality of people's life. If strategic threats to energy security are further construed as risk of quality of people's life, this will facilitate the preparation and performance of a more effective governmental policy on energy, which will subsequently raise the economic well-being of people.

Return on Invesment (ROI) of Software Product: A Systematic Literature Review

2015 ◽  
Vol 6 (1) ◽  
pp. 50-57
Author(s):  
Rizqa Raaiqa Bintana ◽  
Putri Aisyiyah Rakhma Devi ◽  
Umi Laili Yuhana
Keyword(s):  
Return On Investment ◽  
Assessment Criteria ◽  
Software Product ◽  
And Performance ◽  
Rational Consideration ◽  
Actual Return ◽  
The Cost ◽  
Investment Models ◽  
The Impact

The quality of the software can be measured by its return on investment. Factors which may affect the return on investment (ROI) is the tangible factors (such as the cost) dan intangible factors (such as the impact of software to the users or stakeholder). The factor of the software itself are assessed through reviewing, testing, process audit, and performance of software. This paper discusses the consideration of return on investment (ROI) assessment criteria derived from the software and its users. These criteria indicate that the approach may support a rational consideration of all relevant criteria when evaluating software, and shows examples of actual return on investment models. Conducted an analysis of the assessment criteria that affect the return on investment if these criteria have a disproportionate effort that resulted in a return on investment of a software decreased. Index Terms - Assessment criteria, Quality assurance, Return on Investment, Software product

Polymeric textile-based electromagnetic interference shielding materials, their synthesis, mechanism and applications – A review

2021 ◽  
pp. 152808372110370
Author(s):  
Faiza Safdar ◽  
Munir Ashraf ◽  
Amjed Javid ◽  
Kashif Iqbal
Keyword(s):  
Electromagnetic Interference ◽  
Hybrid Composites ◽  
Electronic Devices ◽  
High Tech ◽  
Emi Shielding ◽  
Materials Synthesis ◽  
Synthesis Mechanism ◽  
High Frequencies ◽  
Textile Materials ◽  
Shielding Composites

The rapid proliferation of electronic devices and their operation at high frequencies has raised the contamination of artificial electromagnetic radiations in the atmosphere to an unprecedented level that is responsible for catastrophe for ecology and electronic devices. Therefore, the lightweight and flexible electromagnetic interference (EMI) shielding materials are of vital importance for controlling the pollution generated by such high-frequency EM radiations for protecting ecology and human health as well as the other nearby devices. In this regard, polymeric textile-based shielding composites have been proved to be the best due to their unique properties such as lightweight, excellent flexibility, low density, ease of processability and ease of handling. Moreover, such composites cover range of applications from everyday use to high-tech applications. Various polymeric textiles such as fibers, yarn, woven, nonwoven, knitted, as well as their hybrid composites have been extensively manipulated physically and/or chemically to act as shielding against such harmful radiations. This review encompasses from basic concept of EMI shielding for beginner to the latest research in polymeric-based textile materials synthesis for experts, covering detailed mechanisms with schematic illustration. The review also covers the gap of materials synthesis and their application on polymeric textiles which could be used for EMI shielding applications. Furthermore, recent research regarding rendering EMI shielding properties at various stages of polymeric textile development is provided for readers with critical analysis. Lastly, the applications along with environmental compliance have also been presented for better understanding.

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