Electrical Medium Research Articles

Design and performance evaluation of an electrically heated concrete panel for sustainable winter maintenance

This study focuses on developing an electrically heated concrete panel system incorporating carbon fiber (CF) and carbon nanotube (CNT) as electrical media. Properties of 8 different electrically conductive concrete mixtures, such as workability, air content, compressive strength, and electrical resistivity, were experimentally evaluated to find optimum mixture proportions. Subsequently, three laboratory specimens with different geometric designs were fabricated using a two-lift concrete placement scheme: a normal concrete (NC) layer at the bottom and a conductive concrete (CC) layer at the top. Conventional ribbed rebars were embedded as electrodes to supply electrical power. The electrical heating performance of the specimens was evaluated based on the temperature rise and thermal strain changes during the imposed heating cycles. The findings demonstrated the potential use of the developed electrical HPS for sustainable winter maintenance, which will contribute to advancing heated pavement technologies and minimize the environmental impact caused by traditional snow removal practices.

Development of a digital-based sit and reach box for measuring body flexibility

Technology and education development are expected to make teachers easier to create and produce learning media used practically and efficiently. This study used the research development (R&D) method proposed by Borg and Gall, consisting of ten research steps. It aimed to develop a preliminary product design for a digital-based flexibility test measuring instrument. This research produces a body flexibility measurement tool for physical education subjects, particularly physical fitness. The participants of this study were Tanjung Lago 1 Public Middle School students validated, revised, and tested on small and large scales. Three experts validated this research through a questionnaire of various kinds of questions, i.e.1) an expert in sports tests and measurements, namely a lecturer at PGRI Palembang University (94% in the very compatible category), 2) an expert in electrical media from C.V. Cometronica Palembang (82% very appropriate category), and 3) the teacher of Physical education from SMPN 1 Tanjung Lago (97% very proper category). The three experts reveal that an average of 91% of the digital-based sit and reach box applied to measure flexibility tests is worthy. It is supported by the statistical results of small-scale trials with normality tests of 0.200, homogeneity tests of 0.785, and paired sample t-tests of 0.785, statistical results of large-scale trials with normality tests of 0.200, homogeneity tests of 0.64, and paired sample t-test of 0.299. This study indicates that the digital-based sit and reach box tool developed and tested for meeting validity and effectiveness can be implemented in teaching and learning activities. Key words: development, flexibility, digital.

A Media-Archaeological Interpretation of the Optical Device: Magic Lantern Represented in Hyungsub Shin’s Latest Artwork

The purpose of this study lies in interpreting the works of the artist Hyungsub Shin using the “media archaeology” method, to explore a genealogy of media archaeology and use the findings to promote the development and expansion of media archaeology. Media archaeology is an area in media art that pursues the excavation of past media and the aesthetic use of the media in new ways. Building on recent media archaeological accomplishments, this study points out that existing media archaeology artists mostly restrict themselves to the electronic and electric media in the 20th century, and explores the possibility of sustainable expansion of research on media archaeology by discussing technologies from other periods. As part of the efforts, this study looks into the optical device -

Surface Media: McLuhan, the Bauhaus and the Tactile Values of TV

Marshall McLuhan understood television (TV) as a tactile medium. This understanding implied what Bruno Latour might call a ‘symmetrical’ conception of tactility. According to McLuhan, not only human actors are endowed with the sense of touch. In addition, TV, digital computers and other ‘electric media’ use light beams and similar scanning techniques for ceaselessly ‘caressing the contours’ of their surroundings. This notion of tactility was crucially shaped by the holistic aesthetics of the early Bauhaus. To get at the specific features of the TV image, McLuhan relied on the writings of László Moholy-Nagy and Sigfried Giedion, in particular their use of photography for capturing and highlighting the ‘texture’ of surfaces. However, he hardly reflected the social and political factors that, in the age of electric media, contribute to the ‘symmetricization’ of touch.

Liberature or Literature in the Electric Age

The article proposes a media-oriented approach to liberature, a literary trend born in Poland at the end of the 20th century which aims at reconsidering the physical body of the book as an integral part of the literary work. The idea of liberature is not only a contemporary literary programme, but it has also helped in redefining phenomena from the past hitherto considered to be marginal. The thesis of the article is that this corporeal turn is directly connected with what Marshall McLuhan has called the electric age – a time in which electrical media have put an end to print culture and consequently to the predominance of sight over other senses, to standardisation, specialisation, and linear thinking in favour of a new audio-tactile sensibility. Liberature, if considered from this point of view, turns out to be not a form of resistance of old print culture in a digital world, but the natural consequence of a change of paradigm we can trace also in other fields such as physics and linguistics where the concept of embodiment has occupied a central position for several decades. Hence, far from being a curiosity at the periphery of contemporary literature, it ought to be considered as an important expression of present times.

Telephonic Modernismo

Abstract This essay analyzes the Havana-based literary weekly La Habana Elegante to consider the hemispheric dimensions of late nineteenth-century media change and the role that writers of Latin American descent played in it. As new electric media and improved print technology powered an expanding and interconnected world of print, La Habana Elegante mediated a hemispheric, Spanish-speaking print culture, especially through its foreign correspondence from New York City. The periodical defined that print culture through a notion of latinidad that bridged Latin America and the United States—and by envisioning a two-way flow of ideas between writers and readers. As US-based English-language newspapers developed emerging mass cultural forms that starkly divided producers and consumers, La Habana Elegante tapped into notions of simultaneity inspired by the telegraph and, especially, the telephone to promote a more interactive modern media system meant to circulate Latin American culture throughout the hemisphere.

Analytical estimation of non-local deformation-mediated magneto-electric coupling in soft composites.

For a long time, the search for magneto-electric materials concentrated on multi-ferroics and hard-matter composites. By contrast, rather recently the exploitation of strain-mediated magneto-electric (ME) coupling in soft composites was proposed. The basic idea behind this approach is to combine the magneto- and electro-mechanical responses of composites consisting of a soft matrix carrying magnetic inclusions. Despite that such composites are straightforward to manufacture and have cheap constituents, they did not gain much attention up to now. In this contribution, we demonstrate that ME coupling induced by finite deformations could be of significant magnitude. Our approach relies on shape effects as a special non-local phenomenon in magneto- and electro-elasticity. Based on that we characterize an up to now overlooked ME coupling mechanism which purely relies on these shape effects in soft-matter-based magnetic and electric media. While soft magnetic media are commonly realized as composites, the coupling effect to be highlighted exists independently of the origin of a body's magnetic and electric properties. We show that the magnitude of the effect is indeed significant and, among ellipsoidal bodies, most pronounced for those of spherical to moderately prolate shape. Finite-element simulations are performed to assess the quality of the analytical predictions.

Plasticidade das imagens audiovisuais no espaço acústico-ressonante do cinema

O presente ensaio examina a relação entre espaço e comunicação nos meios audiovisuais marcado pelo domínio do regime escópico em detrimento dos objetos sonoros. Reivindica-se o realinhamento do papel do som na definição audiovisual da cultura, de modo a reposicionar a importância da dimensão sonoro-acústica. Para isso, a hipótese de fundo reconhece que o cinema tem um papel decisivo na renovação da relação do som com o ruído, sobretudo no que diz respeito à consolidação do espaço acústico-ressonante criado pelos meios elétricos. Por conseguinte, entende que matérias sonoras são tão determinantes das imagens audiovisuais quanto a visualidade, como se pode averiguar nas análises fílmicas comparativas. Espera-se, assim, resgatar o legado das culturas acústicas agora reprocessadas em termos de experiência audiovisual de caráter eletrônico-digital.

The future of the library: From electric media to digital media

The future of the library: From electric media to digital media

Electronic media time and sedentary behaviors in children: Findings from the Built Environment and Active Play Study in the Washington DC area.

An objective of the Built Environment and Active Play (BEAP) Study was to examine whether home built environment, bedroom electronic presence, parental rules and demographics predicted children's sedentary behavior (SB). In 2014, BEAP Study questionnaires were mailed to 2000 parents of children (7–12 years) within the Washington DC area. SB-Duration (hours/day) and SB-Frequency (days/week) were assessed by two questions with multiple subparts relating to SB activity type (e.g. car riding) and SB companionship (e.g. friends). Built environment, bedroom electronic presence, parental rules and demographic data were obtained through questionnaire items and ordered logistic regression models were used to examine whether these variables were associated with SB. Study sample included 144 children (female (50%); average age (9.7 years); White (56.3%); Black/African-American (23.7%); Asian-Americans (10.4%)). Nearly 40% of the sample reported daily solitary SB with car riding being the most frequently reported type of SB. Children living on streets without a dead-end/cul-de-sac exhibited a higher odds in SB-Duration using electric media [2.61 (CI: 1.31, 5.18)] and having no television in a child's bedroom was associated with a lower odds in SB-Frequency [0.048 (CI: 0.006, 0.393)] and SB-Duration [0.085 (CI: 0.018, 0.395)]. Non-Hispanic/Latino children were also found to have higher odds in solitary SB-Frequency when parental rules of electronic use were modeled [8.56 (CI: 1.11, 66.01)]. Based on results from this cross-sectional study, home neighborhood built environment, bedroom electronic presence and absence of parental rules can significantly predict children's SB.

Using Electronic Medias for Science Mathematic and English in School under Office of the Basic Education Commission, Thailand

This study aims to increase the learning ability of students under the jurisdiction of the Office of The Basic Education Commission (Ministry of Education) through electronic english media. The media are used in science, mathematics and english classes in order to prepare the students for the ASEAN Community. The media can also benefit the students’ communities in the long run. The comparison of the achievement test results before and after the use of media was made. It was found that the students’ learning ability in the three subjects after the use of media increased by 27.67% and according to a questionnaire that assessed the satisfaction of 60 school administrators, 90 teachers and 3,600 students towards the media used, the administrators’ satisfaction was high (the mean was 4.45 and the standard deviation was 0.55), the teachers’ was also high (the mean was 4.30 and the standard deviation was 0.73) and the students’ was high as well (the mean was 4.93 and the standard deviation was 0.82). To evaluate users’ satisfaction, questionnaires based on Technology Acceptance Model were performed to gather data from 3,750 users. The result reveals that users (the mean was of 4.30and the standard deviation was 0.52) were satisfied with the electric media. It can be concluded that the electronic media used in science, mathematics and english classes served as effective teaching aids.

Sonar: Empire, Media, and the Politics of Underwater Sound

This article traces the development of acoustic navigation media, or “sonar,” in the first half of the twentieth century, focusing on the relationships forged between underwater sound, electric media, and new techniques of listening. The central argument is that sonar shaped, and was shaped by, the expansion of warfare and capital underwater, and that this expansion came to be conceptualized by nautical organizations as dependent upon the control of underwater sound. Through analysis of key episodes in the conquest of subsea space, the author explores scientific, military, and commercial efforts to sense underwater objects and demonstrates how these efforts helped reconceptualize oceanic water as a component of undersea acoustic media and led to the material reorganization of the ocean’s acoustic field.

From the Alphabet to the Web

The article discusses the issues of social and cultural construction of the concepts of time, space, and thought. This analysis is matched by a parallel between the physics and those of communication. To be used as a reference is the shift from the Newtonian conception of time and space to the one proposed by Einstein. In fact, the concepts of space and time outlined in Newtonian physics well befits to what is the cultural and experiential that outlines M. McLuhan in his description of the aural and visual culture—an examination that, starting from the introduction of the alphabet, takes us to Gutenberg and the electric media. The revolution introduced by Einstein seems similar to the one that goes to the concepts of time, space, and thought with the advent of the Net. This article includes a review of the literature on the subject, through the lesson of Meyrowitz, McLuhan, Innis, Castells, Appadurai, Manovich, Berners-Lee to get to Carr. Facing this path is referred to as the birth of the hypertext moment of transition from linear thinking to the reticular.

Long‐Range Correlations of the Surface Charge Density Between Electrical Media with Flat and Spherical Interfaces

AbstractWe study the asymptotic long‐range behavior of the time‐dependent correlation function of the surface charge density induced on the interface between two media of distinct dielectric functions which are in thermal equilibrium with one another as well as with the radiated electromagnetic field. We start with a short review which summarizes the results obtained by using quantum and classical descriptions of media, in both non‐retarded and retarded regimes of particle interactions. The classical static result for the flat interface is rederived by using a combination of the microscopic linear response theory and the macroscopic method of electrostatic image charges. The method is then applied to the case of a spherically shaped interface between media (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

Demystifying Some Momentous Changes

How do we know when a communication technology has been fully integrated into society? Perhaps it is when most people no longer think about, or even remember, the debates surrounding its adoption. Many adults today have vivid recollections of the debates and challenges surrounding the 1996 Telecommunications Act; in fact, some of its key concerns, especially those related to the Internet, remain unresolved. But we can only imagine the times when older technologies—those we now take for granted or those we have discarded—were having their practices and protocols negotiated. The telephone and telegraph are two such technologies. A common way of introducing young scholars to these precedent-setting electrical media networks is through memorable phrases like James Carey’s “the effective separation of communication from transportation”or Daniel Czitrom’s “annihilator of time and space.” Like Carey and Czitrom, scholars ranging from Harold Innis and Marshall McLuhan to Carolyn Marvin and Claude Fischer have recounted fascinating tales of the dramatic changes to everyday life that accompanied the harnessing of electricity.1 Such stories and metaphors play a critical role in our understanding of communication and culture broadly, and of the institutional development of networked communication media specifically. For the reflective global citizen in an Internet-saturated world, understanding the first moves from the physical transport of messages to their electronic transmission is vital.

Research on TEM Pulse Compression Technique

There is a mathematical relationship between the transient electromagnetic diffusion equation in electric media and the wave equation. Thus, pseudo-seismic migration imaging is possible. However, the pseudo-seismic wavelets associated with the transformed data show a broaden waveform for increasing physical times. This phenomenon causes the resolution of the subsurface image to degrade and consequently limit the arrears of application for the Transient Electromagnetic Method (TEM). Horizontal resolution can be improved, certainly, through the technique of synthetic aperture algorithm. We developed a TEM pulse compression technique based on previous research in order to improve the vertical resolution. The result of synthetic model shows that the vertical resolution is improved after processing the synthetic aperture data with the pulse compression technique.

Dual Layer LC Panels for Polarization Control to Display Invisible 2D Code

The authors have researched a support system of the reminiscence and life review activity. This support system consists of an interactive tabletop display and interface system. An invisible code is one of the useful technologies. The invisible codes provide us with an operating environment using a pen-like device. However, this technology is applied to the only paper media. The authors think we want to realize an interaction using the invisible code on an electrical media. We propose a method to display invisible codes using LCD panels and to detect a polarized symbol image with a conventional CCD camera.

Research on a New Method of Advanced Focus Detection with DC Resistivity in Tunnels

AbstractWe research and put forward a new method of advanced focus detection for DC resistivity in tunnels. This method can make the primary field current to focus like a searchlight through setting up different circular electrode groups on the working face, and can effectively detect the existence of bad geologic body ahead tunneling and aim at the goal of advanced prediction. This paper firstly introduces the primary principle of advanced detection with DC resistivity and gives two kinds of survey methods of focus. In order to verify the feasibility of this method, we simulated several tunnel models of axial‐symmetric electrical media in the focus surveying condition using the 2‐D finite element method of anomaly potentials. The modeling results show that this method can obviously reflect the anomaly, and the data can be real‐time interpreted. We suggest to popularize this method to advanced prediction of tunnels gradually.

Paradoxes of Electric Media

Abstract

The Literacy Control Complex

The Literacy Control Complex