Fundamentals, Progress and Perspectives on High-frequency Phononic Crystals

2022 ◽  
Author(s):  
Yu Cang ◽  
Yabin Jin ◽  
Bahram Djafari-Rouhani ◽  
George Fytas
Keyword(s):  
Information And Communication Technologies ◽  
Elastic Waves ◽  
Periodic Structures ◽  
Communication Technologies ◽  
Phononic Crystals ◽  
Nanometer Scale ◽  
Research Directions ◽  
Optomechanical Systems ◽  
Information And Communication

Abstract Phononic crystals (PnCs) are capable to manipulate the flow of elastic energy through their periodic structures and emerge as a promising field in the last two decades. Thanks to the advances in microfabrication technologies and developments of multifunctional materials, the engineering of periodic structures moves forward to the nanometer scale. Hence, the relevant frequencies of elastic waves are pushed toward the gigahertz regime where strong photon-phonon interactions trigger the applications of PnCs towards information and communication technologies. In this review, we present the experimental achievements on hypersonic PnCs involving microfabrication technologies to realize the desired structures and characterization of their band structures for unraveling phonon propagation modulation. Some application-orientated research directions are proposed in terms of advances in fabrication and characterization technologies and the development of electro-optomechanical systems.

scholarly journals Análisis de las intervenciones de apertura de foros de formación online desde una perspectiva discursivo multimedial y didáctico discursiva

2010 ◽  
pp. a142
Author(s):  
Guadalupe Alvarez ◽  
Lourdes Morán
Keyword(s):  
Online Education ◽  
Information And Communication Technologies ◽  
Knowledge Construction ◽  
Communication Technologies ◽  
Information And Communication

No cualquier uso de las tecnologías de la información y la comunicación garantiza la construcción del conocimiento. Se vuelve entonces importante estudiar las modalidades comunicativas en los foros. En relación con ello, y considerando que la emisión iniciadora suele funcionar como guía de las emisiones subsiguientes, se propone elaborar una caracterización de la intervención de apertura de los foros. Para ello, se analizan dichas intervenciones desde una perspectiva discusivo multimedial y didáctico discursiva.Analysis of open online education forum from a discursive multimodal and didactic discursive perspectives AbstractNot all uses of information and communication technologies (ICT) guarantee the knowledge construction. For that reason, the study of forum communicative modalities becomes important. With regard to this, and considering that the open intervention is usually a guide for the following interventions, the aim of this article is to elaborate a characterization of the forum open interventions. In this sense, these interventions are analyzed from multimodal discursive and didactic discursive perspective.

The State of the Art of Cloud Manufacturing and Future Trends

2013 ◽  
Author(s):  
Göran Adamson ◽  
Lihui Wang ◽  
Magnus Holm
Keyword(s):  
Information And Communication Technologies ◽  
Communication Technologies ◽  
Cloud Manufacturing ◽  
Advanced Manufacturing ◽  
Future Trends ◽  
Research Directions ◽  
Knowledge Based ◽  
Information And Communication ◽  
Service Oriented ◽  
Manufacturing Software

Cloud manufacturing has emerged as a new manufacturing paradigm, which combines technologies (such as Internet of Things, Cloud computing, semantic Web, virtualisation and service-oriented technologies) with advanced manufacturing models, information and communication technologies. It aims to be networked, intelligent, service-oriented, knowledge-based and energy efficient, and promises a variety of benefits and advantages by providing fast, reliable and secure on-demand services for users. It is envisioned that companies in all sectors of manufacturing will be able to package their resources and know-hows in the Cloud, making them conveniently available for others through pay-as-you-go, which is also timely and economically attractive. Resources, e.g. manufacturing software tools, applications, knowledge and fabrication capabilities, will then be made accessible to presumptive consumers on a worldwide basis. After surveying a vast array of available publications, this paper presents an up-to-date literature review together with future trends and research directions in Cloud manufacturing.

scholarly journals Os objetos educacionais digitais em Linguagem e Interação: avanços, permanências ou retrocessos?

2018 ◽  
Vol 11 (3) ◽  
pp. 102-130
Author(s):  
Luciana Pereira Silva ◽  
Andreia Rutiquewiski ◽  
Juliana Benatti
Keyword(s):  
Information And Communication Technologies ◽  
Mother Tongue ◽  
Language Skills ◽  
Communication Technologies ◽  
Traditional Practices ◽  
Digital Information ◽  
Digital Material ◽  
Information And Communication ◽  
Teaching Learning

RESUMO: Este artigo analisa os Objetos Educacionais Digitais que acompanham a coleção didática Linguagem e Interação, indicada ao ensino médio 2018-2020 via Plano Nacional do Livro Didático. Segundo a literatura, esse material digital pode subsidiar as aulas de língua materna a partir da pedagogia dos multiletramentos em substituição a práticas de ensino tradicionais. Para tanto, foram realizadas pesquisas de caráter documental (documentos oficiais de ensino) e bibliográfico (LEFFA, 2006; ANTUNES, 2007; MARCUSCHI, 2008; DIONÍSIO 2011, 2014; ROJO, 2012, 2013, 2017, entre outros). Em seguida, foram analisados os Objetos Educacionais, cotejando-os à fundamentação teórica. Propõe-se, para a caracterização do corpus, dois momentos de análise: 1) a partir das propriedades estabelecidas por Leffa (granularidade, reusabilidade, interoperabilidade e recuperabilidade); e 2) a partir dos fundamentos teórico-metodológicos do ensino de Português como língua materna. Os resultados confirmam que, apesar desse material digital enquadrar-se na definição prototípica, deixa a desejar quanto ao desenvolvimento das habilidades linguísticas dos estudantes com vistas aos multiletramentos.   PALAVRAS-CHAVE: ensino-aprendizagem de língua materna; tecnologias digitais de informação e comunicação; objetos educacionais digitais; multiletramentos.   ABSTRACT:This article analyses the Digital Educational Objects which follow the didactic collection Linguagem e Interação, appointed to be used in the middle school 2018-2000 via Plano Nacional do Livro Didático. Based on the current literature, this digital material may help in the mother tongue classes anchored in a multiliteracy pedagogy, replacing traditional practices. In doing so, a research was conducted based on teaching official documents as well as a bibliographic research (LEFFA, 2006; ANTUNES, 2007; MARCUSCHI, 2008; DIONÍSIO, 2011, 2014; ROJO, 2012, 2013, 2017, among others. Then, the Digital Educational Objects were analyzed taking into consideration the chosen theory. It proposes, for the characterization of the corpus, two moments of analysis: 1) from the properties established by Leffa (granularity, reusability, interoperability and recoverability); and 2) from the theoretical-methodological foundations of the teaching of Portuguese as a mother tongue. The results confirm that although this digital material fits in with the prototypical definition, it leaves no room for the development of students' language skills, considering the multiliteracies.   KEYWORDS: teaching-learning of mother tongue; digital information and communication technologies; digital educational objects; multiliteracies.

Whatsapp Messenger as a Mobile Media to Learn Writing for EFL Students

2018 ◽  
Vol 1 (2) ◽  
pp. 156-165 ◽  
Author(s):  
Linda Linda ◽  
Ida Ri'aeni
Keyword(s):  
Information And Communication Technologies ◽  
Teaching And Learning ◽  
Communication Technologies ◽  
First Grade ◽  
English Department ◽  
Instructional Media ◽  
Mobile Media ◽  
Efl Writing ◽  
Information And Communication ◽  
Efl Students

Abstract   The objective of this research is to find out the use of Whatsapp Messenger as a mobile media to learn writing in EFL classes.Several researchers have attempted to prove applicability of mobile learning as modern ways of teaching and learning (Naismith, 2004:115). Moreover, applying portable technologies have been demanded by most of the modern learners who oftentimes are forced to study anywhere, and anytime, for example, at work, in the bus or at weekends (Evans, 2008:115).The research was motivated by the students’ difficulties in writing. The sample of this research was three classes of first grade students of English Department of Unswagati. The instrument of this research was questionnaire sheet. Data from questionnaire sheet was analyzed based on the frequency students’ answers and then was calculated and interpreted into percentages. The result shows WhatsApp Messenger attracts the students interest and also the students have positive responses towards the using ofWhatsAppMessenger. In applying WhatsApp group, the writer concluded that, learning using WhatsApp group has effective to develop their creativity in writing skill. On the other hand, the result from the questionnaire sheet indicated that almost of students is active in learning to writing recount text. Students can learn out of the classroom. Beside WhatsApp can be used privately, it can be used for students’ education. The students can use their gadget positively for their ability in learning English. The students can improve their knowledge in learning ICTs (Information and Communication Technologies). Keyword: WhatsApp Messenger,EFL writing, Instructional Media, ICTs (Information and Communication Technologies).

Technologies Disability and Inclusion

2018 ◽  
Author(s):  
Tomas Brusell
Keyword(s):  
Social Media ◽  
Augmented Reality ◽  
Information And Communication Technologies ◽  
Future Development ◽  
Smart Cities ◽  
Communication Technologies ◽  
Modern Technology ◽  
The Social ◽  
The Disabled ◽  
Information And Communication

When modern technology permeates every corner of life, there are ignited more and more hopes among the disabled to be compensated for the loss of mobility and participation in normal life, and with Information and Communication Technologies (ICT), Exoskeleton Technologies and truly hands free technologies (HMI), it's possible for the disabled to be included in the social and pedagogic spheres, especially via computers and smartphones with social media apps and digital instruments for Augmented Reality (AR) .In this paper a nouvel HMI technology is presented with relevance for the inclusion of disabled in every day life with specific focus on the future development of "smart cities" and "smart homes".

ROLE OF INFORMATION AND COMMUNICATION TECHNOLOGY (ICT) IN AGRICULTURE FOR RURAL DEVELOPMENT

2017 ◽  
Vol 23 (1) ◽  
pp. 3-8
Author(s):  
R. P. BAIN ◽  
D. P. RAI ◽  
SIDDARTH NAYAK
Keyword(s):  
Rural Development ◽  
Information And Communication Technologies ◽  
Information And Communication Technology ◽  
Communication Technology ◽  
Communication Technologies ◽  
Sustainable Society ◽  
Indian Agriculture ◽  
Information And Communication ◽  
Role Of Information

If we want to convert our rural population into knowledge driven, progressive, self sufficient, self reliant, sustainable society, the role of Information and Communication Technologies (ICT’s) cannot be ignored. Timely availability information is considered as most important factor in Indian agriculture. At present ICT is the technology of this millennium. Transferring the developed technology to all end users is time-consuming and tiresome task and is often not completed due to paucity of resources and lack of manpower. In India, agriculture and rural development has gained significantly from ICT due to its widespread extension and adoption. In this era of internet, ICT is committed to provide real, timely accurate authentic information to the farmers and rural peoples.

The Datalogical Drug Mule

2017 ◽  
Vol 3 (3) ◽  
pp. 9-29
Author(s):  
Juan Llamas-Rodriguez
Keyword(s):  
Information And Communication Technologies ◽  
Communication Technologies ◽  
Data Driven ◽  
Biological Processes ◽  
Cultural Narratives ◽  
Government Documents ◽  
Human Labor ◽  
Information And Communication ◽  
Data Capturing ◽  
Legal Structures

Borders and bodies are increasingly regulated by data-capturing mechanisms spread across the world through information and communication technologies. This article traces the features and implications of such a border-body datalogical entanglement through the figure of the drug mule. It analyzes government documents and recorded case studies to argue that this figure emerges from an assemblage of cultural narratives, legal structures, human labor, technical practices, and biological processes. The datalogical drug mule is already implicated in a struggle over what, and how, data is meaningful and actionable. Investigating this figure allows us to begin disentangling the data-driven mechanisms that constitute modern borders and bodies while at the same time accounting for analog continuities in contemporary practices of border security.

STEGANOGRAPHIC METHODS FOR EMBEDDING INFORMATION IN DIGITAL OBJECTS TO PROVIDE INFORMATION SECURITY IN THE CONCEPT OF "INTERNET OF THINGS"

2019 ◽  
pp. 110-116
Author(s):  
Hristo Terziev
Keyword(s):  
Information Security ◽  
Internet Of Things ◽  
Information And Communication Technologies ◽  
Communication Technologies ◽  
Virtual Space ◽  
Least Significant Bit ◽  
Computer Environment ◽  
Information And Communication ◽  
Digital Objects ◽  
Effective Service

Internet of Things is a new world for connecting object space in the real world with virtual space in a computer environment. To build IoT as an effective service platform, end users need to trust the system. With the growing quantity of information and communication technologies, the need to ensure information security and improve data security is increasing. One of the potential solutions for this are steganographic methods. Steganography based on the least significant bit (LSB) is a popular and widely used method in the spatial domain.

Cultural Aspects and Digital Divide in Europe

MedienJournal ◽  
2017 ◽  
Vol 26 (3) ◽  
pp. 14-32 ◽  
Author(s):  
Ursula Maier-Rabler
Keyword(s):  
Digital Divide ◽  
Information And Communication Technologies ◽  
Social Economic ◽  
Innovation Process ◽  
Communication Technologies ◽  
Individual Member ◽  
Policy Practice ◽  
Cultural Aspects ◽  
Information And Communication ◽  
Policy Strategies

This paper aims to make a contribution toward an improvement of European e-policy practice. lt is inspired by the conviction that successfuJ e-policy strategies can lead to ba­lanced chances for all members in certain societies to aquire the absolutely indispensable capabilities for decision-making in the context of Information and Communication Technologies (ICTs). Following the path of the development of e-policy papers it has to be stated that many goals have not yet been achieved. The techno-deterministic concepts 'access' and 'usage' seem not to reach far enough to get people really involved andin­formed. Many more aspects have tobe considered in order to create a clirnate for inno­vation where different choices made by different individuals according to their different social, economic or cuJtural backgrounds do not lead automatically to the well known either or not, connected or not-connected, haves or have-nots, but to a variety of pat­terns of involvement. In this paper, we argue for different e-policy strategies according to cultural aspects in certain societies. And hereby we will focus on the cultural aspects of information itself, on the notion of information in different information cultures. lt also seems important to mention at this stage that we believe that getting all members of society involved in the ICT-innovation process in order to provide the basis for in­formed decisions by each individual member is the most important task of e-policy.

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