scholarly journals Aid in the design of antenna arrays with electronic phase steering using Matlab®

2011 ◽  
Vol 4 (8) ◽  
pp. 41
Author(s):  
Francisco José Gil Navia
Keyword(s):  
Antenna Arrays ◽  
Digital Technologies ◽  
Computer Assisted ◽  
Main Motivation ◽  
Electronic Phase ◽  
Applied Technology ◽  
Real Behavior ◽  
Virtual Prototypes ◽  
The 1950S

Antenna arrays have been used since the 1950s in multiple applications; however, it was not until recent years that, given progress in digital technologies, this application has become the fastest and most varied development in the radar world. The main motivation for their development is that they permit electronic phase steering that implies extreme phase agility, while also being tolerant to failure because of the amount of elements that comprise them. They also permit the reduction of side lobes by controlling the amplitude of each element.Because it is a currently applied technology, but with many aspects under development, it is necessary to enter this field and generate the required tools including those for computer assisted prototyping. Because of the aforementioned, this work sought to use Matlab® to create virtual prototypes of arrays that permit visualizing an approach to their real behavior stemming from certain parameters.

Core Principles of Educational Multimedia

2011 ◽  
pp. 130-136
Author(s):  
Geraldine Torrisi-Steele
Keyword(s):  
World War Ii ◽  
Learning Experience ◽  
Instructional Television ◽  
Computer Assisted ◽  
Sound Motion ◽  
The 1950S ◽  
1960S And 1970S ◽  
The 1960S ◽  
Assisted Instruction ◽  
Computer Resources

The notion of using technology for educational purposes is not new. In fact, it can be traced back to the early 1900s during which school museums were used to distribute portable exhibits. This was the beginning of the visual education movement that persisted throughout the 1930s, as advances in technology such as radio and sound motion pictures continued. The training needs of World War II stimulated serious growth in the audiovisual instruction movement. Instructional television arrived in the 1950s but had little impact, due mainly to the expense of installing and maintaining systems. The advent of computers in the 1950s laid the foundation for CAI (computer assisted instruction) through the 1960s and 1970s. However, it wasn’t until the 1980s that computers began to make a major impact on education (Reiser, 2001). Early applications of computer resources included the use of primitive simulation. These early simulations had little graphic capabilities and did little to enhance the learning experience (Munro, 2000).

scholarly journals Education Genres Animated Poster in the Second Half of the 20th Century

2016 ◽  
Vol 8 (4) ◽  
pp. 28-42
Author(s):  
Natalia G Krivulya
Keyword(s):  
Web Sites ◽  
New Technologies ◽  
Digital Technologies ◽  
Soviet Period ◽  
Special Role ◽  
Social Strategies ◽  
Outdoor Advertising ◽  
The 1950S ◽  
The 1960S ◽  
Artistic Image

After WWII the genre of the animated poster was predominantly presented as advertisment films. The movie posters imagery in the 1950s tended to have an illustrative and spatial-pictorial artistic propensity. Grotesque and satire gave way to the dominance of realistic images, and the artistic design had gained coloration and splendor, creating the image of a cheerful world, affluence and prosperity. Films with propaganda and ideological orientations appeared along with the advertisement films, as the political and social poster developed. A special role in the poster genre development was played by the emergence of television as a major customer and distributor of this product. Unlike Western animation, the production of advertisement and social film-posters in the USSR was a state tool of the planned economy. Animated posters played an important role in the formation of new social strategies, behavior patterns and consumption. As a result, in the animated posters of the Soviet period, especially during the 1950s and 1960s, a didactic tone and an optimistic pathos in the presentation of the material dominated. The stylistics of film-posters changed in the 1960s. Their artistic image was characterized by conciseness and expressiveness, inclination towards iconic symbolism, and the metaphoric and graphic quality of the imagery. The poster aesthetics influenced the entire animation development in this period. The development of advertisement and social posters continued in the 1970s-1980s. The clipping principles of the material presentation began to develop in the advertisement poster, however, in the social and political poster there was a tendency towards narration. Computer technology usage in animation and the emergence of the Internet as a new communicative environment contributed to a new stage in the development of the animated poster genre. Means of expression experienced a qualitative upgrade under the influence of digital technologies in animated posters. While creating an animated posters artistic appearance the attraction and collage tendencies intensify due to the compilation of computer graphics and photographic images, furthermore, simulacrum-images are actively utilized as well. Since the 2000s, digital technologies are actively used for the development of social, instructional and educational posters. The advent of new technologies has led to modifications of the animated poster genre, changed the way it functions and converted its form. Along with cinematic and television forms - new types of animated posters have appeared which are used in outdoor advertising (billboards) as well as dynamic interactive banners and animated posters on web sites.

scholarly journals Digital Model of Boiler Furnace Processes

2021 ◽  
Vol 21 (2) ◽  
pp. 26-32
Keyword(s):  
Thermal Power ◽  
Digital Technologies ◽  
Regulatory Elements ◽  
Digital Model ◽  
Computer Assisted ◽  
Gas Temperature ◽  
Boiler Furnace ◽  
Factors Affecting ◽  
Standard Values ◽  
Account Temperature

The normative method (NM) of thermal boiler calculation, which has been confirmed and refined multiple times, contains the structure of ideas and methods retained and adapted during the transition to digital technologies. As applied to the analysis of thermal processes in the boiler furnace with flare furnaces, this required the transformation of a large array of initial and reference data, which cannot be used unchanged in digital technologies, including computer-assisted. This applies to graphical and tabular data, which occupy up to 80% of the NM volume. The main regulatory elements of the digital model in this case are the temperature of adiabatic combustion of the fuel, the coefficient of attenuation of radiation by the combustion medium, the degree of emissivity of the furnace taking into account the size of the radiating layer, the coefficient of thermal efficiency of the furnace wall pipings, the resulting Boltzmann number and the final calculated value of the gas temperature at the exit from the furnace. The use of specific data for a boiler with D = 400 t/h made it possible to clarify the structure of analytical dependencies, as well as the magnitude of deviations from the standard values in the final temperature values. The paper presents a developed transition to dependencies accounting for the thermal power of the boiler and the type of fuel. The digital model adaptation to the boiler conditions with all types of fuel in use made it possible to determine the average deviations of the final parameters. Quantitatively, the entire material corresponds to the normative data, is presented digitally and corresponds methodically to the Mathcad-15 package. In contrast to acclaimed works in this area, all factors affecting the heat balance are represented by approximations taking into account temperature variability.

scholarly journals OVERCOMING SOCIAL ISOLATION WITH DIGITAL TECHNOLOGIES AMONG AGEING POPULATIONS DURING COVID-19

2021 ◽  
Vol 4 ◽  
pp. 171-178
Author(s):  
Ieva Reine ◽  
Andrejs Ivanovs ◽  
Inta Mieriņa ◽  
Ilona Gehtmane-Hofmane ◽  
Ilze Koroļeva
Keyword(s):  
Social Isolation ◽  
Digital Technologies ◽  
Education Level ◽  
Computer Assisted ◽  
Telephone Interviews ◽  
Gender And Age ◽  
Age And Gender Differences ◽  
Health Related ◽  
And Gender ◽  
Ageing Populations

During Covid-19 social isolation has become more common worldwide, however, some groups, especially elderly people, might have experienced dramatically limited communication due to the lack of skills and access to digital technologies. In this paper, we examined if education was associated with the use of digital technologies to maintain contacts with a family, friends, other social networks and services. The survey was conducted in June-August 2020 by doing 1089 computer-assisted telephone interviews. The questions examined how people aged 50 years and older coped with socioeconomic and health-related impact of COVID-19.We used logistic regression analysis to study the association between the use of digital technologies and the level of education by gender and age. The higher the education was, the more it strongly associated with the use of digital technologies (OR 5.85; 95% CI 3.78-9.03). As expected, age was a strong explanatory factor, however, we did not find consistent age and gender differences. Among those who used digital technologies, analyses showed that overcoming social isolation was related to the education level. The conclusion of the study is that education has inevitable impact on the use of digital technologies and social contacts, however high education level is not crucial for the acquisition of information. It seems that digital technologies are important tools to prevent social isolation and are related to education that includes digital access and competencies. 

A Short History of Computer-Assisted Language Learning (CALL)

2018 ◽  
pp. 1-28
Keyword(s):  
Language Learning ◽  
Language Skills ◽  
Future Perspective ◽  
Computer Assisted ◽  
Computer Assisted Language Learning ◽  
Short History ◽  
Key Concepts ◽  
History Of ◽  
The 1950S

This chapter discusses a brief history of computer-assisted language learning (CALL). First CALL and its key concepts are defined then a comprehensive but brief account of the history of CALL from the 1950s till the present is presented. The characteristics of each phase of CALL, the corresponding linguistic/psychological frameworks, technologies, activities and merits/demerits, and the role of the computer in instruction are elaborated. CALL research scope and its future perspective are portrayed and possible fields of research are introduced. In the end, a quick and brief guideline is provided on how to use CALL in teaching macro and micro language skills.

scholarly journals Books, Scrolls and Ripples: In Search of an Audience through the Printed Works of Helen Douglas

Arts ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 35
Author(s):  
Chris Taylor
Keyword(s):  
Digital Technologies ◽  
Small Press ◽  
Art Form ◽  
Public Recognition ◽  
The 1950S ◽  
Artist's Book

In this interview, artist and small press publisher Dr. Helen Douglas appraises the development of the artist’s book from its emergence in the 1950s and 1960s to seeking public recognition as a bone fide art form in the mid-1970s, through to the current global attention that it now attracts. Notions of the mass-produced and the handmade are questioned and examined in light of the freedom, cheapness and accessibility of digital technologies versus the time and labour of the artist in search of the haptic, intimate and conceptually complex experience.

scholarly journals Recommended Employment Model for Silent Community using Smart Technology

2021 ◽  
Vol 9 (7) ◽  
pp. 1030-1034
Keyword(s):  
Digital Technology ◽  
Digital Technologies ◽  
Developed Countries ◽  
Main Motivation ◽  
Self Confidence ◽  
The World ◽  
Practical Life ◽  
The Developed Countries ◽  
Official Information ◽  
Valid Information

Today, it is the era of Smart Digital Technologies (SDT). The humans are switching their almost personal and official information into digital technology and keeping1intact valid information through cloud computing in less efforts all over the world. Special Need People (SNP) are thepart of every society and when we look at the issues related to them;we find it not only in the under developing countries but also face a lot of hindrances in the developed countries. The main motivation behind this research is to overcome the challenges faced by special need community. There are different categories of Special Need People(SNP),but this research focuses on deaf community. When the deaf start or think to start their career, they face a lot of problems in the society. As a result of this,they are leading isolated life from the other people of community. The technology-basedmodel will enable them to initiate the practical life with self-confidence and may easily support their families

scholarly journals The role of AI and machine learning in contemporary orthodontics

2021 ◽  
Vol 11 ◽  
pp. 74-80
Author(s):  
Jean-Marc Retrouvey
Keyword(s):  
Tooth Movement ◽  
State Of The Art ◽  
Treatment Plan ◽  
Digital Technologies ◽  
Computer Assisted ◽  
General Intelligence ◽  
Future Developments ◽  
The Past ◽  
Appropriate Treatment

In the past 20 years, the orthodontic profession has adopted digital technologies such as computer-assisted tooth movement, automated staged dental aligner production, and 3D simulations. Until recently, the use of artificial intelligence (AI) was limited to narrow intelligence and supervised “learning” such as automated cephalometric point recognition, segmentation of teeth from 3D files, and staging of orthodontic treatment. The next step will be to create neural networks based on general intelligence (the human intelligence is considered general intelligence), where the network using powerful computers and complex algorithms will “learn” orthodontic diagnosis and treatment planning to suggest the most appropriate treatment plan for optimized treatments and more predictable outcomes. The objectives of this paper are to describe the state of the art in AI and orthodontics and explore potential avenues for future developments and applications.

Improving the link between computer-assisted design and configuration tools for the design of mechanical products

2013 ◽  
Vol 27 (1) ◽  
pp. 51-64 ◽  
Author(s):  
Roberto Raffaeli ◽  
Maura Mengoni ◽  
Michele Germani
Keyword(s):  
Computer Aided Design ◽  
Product Configuration ◽  
Computer Assisted ◽  
Product Knowledge ◽  
Industrial Case Study ◽  
Support Design ◽  
Mechanical Field ◽  
Mechanical Products ◽  
Design Activities ◽  
Virtual Prototypes

AbstractThe competitive market forces companies to offer tailored products to meet specific customer needs. To avoid wasting time, design efforts generally address the configuration of existing solutions, without producing substantial design modifications. Configuration tools are used to achieve customized products starting from a common platform. Many approaches have been successfully proposed in literature to configure products. However, in the mechanical field they need further investigation in order to be efficiently linked to computer-aided design technologies. Research is focused on tools and methods to automatically produce geometrical models and improve the flexibility of the continuous product updating process. In this context, this paper aims to combine product configuration approaches with design automation techniques in order to support design activities of products to fulfill specific requirements. The approach is based on entities called configurable virtual prototypes. Three different domains are managed and connected via configurable virtual prototypes: product specifications, geometrical data, and product knowledge. In particular, geometry recognition rules are used to identify the parameterization of parts and the assembly mating constraints. The approach is exemplified through an industrial case study where a tool has been developed on the basis of the described method. Advantages of the system are shown in terms of achieved product configuration efficiency.

Core Principles of Educational Multimedia

2008 ◽  
pp. 17-24
Author(s):  
G. Torrisi-Steele
Keyword(s):  
World War Ii ◽  
Learning Experience ◽  
Instructional Television ◽  
Computer Assisted ◽  
Sound Motion ◽  
The 1950S ◽  
1960S And 1970S ◽  
The 1960S ◽  
Assisted Instruction ◽  
Computer Resources

The notion of using technology for educational purposes is not new. In fact, it can be traced back to the early 1900s during which school museums were used to distribute portable exhibits. This was the beginning of the visual education movement that persisted throughout the 1930s, as advances in technology such as radio and sound motion pictures continued. The training needs of World War II stimulated serious growth in the audiovisual instruction movement. Instructional television arrived in the 1950s but had little impact, due mainly to the expense of installing and maintaining systems. The advent of computers in the 1950s laid the foundation for CAI (computer assisted instruction) through the 1960s and 1970s. However, it wasn’t until the 1980s that computers began to make a major impact on education (Reiser, 2001). Early applications of computer resources included the use of primitive simulation. These early simulations had little graphic capabilities and did little to enhance the learning experience (Munro, 2000).

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