Radiotelegraphy to Broadcasting

2013 ◽  
Vol 29 (2) ◽  
pp. 335-365
Author(s):  
J. Justin Castro
Keyword(s):  
Wireless Communications ◽  
Nation Building ◽  
Wireless Devices ◽  
Telecommunications Industries ◽  
The Revolution

This essay explores the development of wireless communications from radiotelegraphy to broadcasting. An under analyzed and important topic, Porfirian and revolutionary wireless officials and policies laid the foundation for Mexico’s powerful broadcasting and telecommunications industries. From the beginning, communications specialists used radio for state and nation building, especially in the hinterlands. The Revolution briefly shifted the focus of wireless experts away from the frontiers and toward warfare; however, the upheaval actually expanded the number of wireless devices and technicians. These professionals subsequently became essential figures in communications projects carried out during the presidencies of Venustiano Carranza and Álvaro Obregón, as well as during the rise of broadcasting in the 1920s. El presente ensayo analiza el desarrollo de las radiocomunicaciones, desde la radiotelegrafía hasta la radiodifusión. El tema ha sido poco analizado, pero es importante: los oficiales y las políticas de radiocomunicación porfiristas y revolucionarios sentaron las bases de las poderosas industrias de la radio y la telecomunicación en México. Desde un principio, especialistas en comunicaciones utilizaron la radio para la construcción del estado y la nación, especialmente en las fronteras del país. La revolución desplazó brevemente la atención de los expertos lejos de las fronteras y hacia la guerra; sin embargo, el levantamiento no hizo sino aumentar el número de aparatos y técnicos de radiocomunicación. Más adelante, estos profesionales se convertirían en figuras esenciales en proyectos de comunicación emprendidos durante las presidencias de Venustiano Carranza y Álvaro Obregón, así como durante el florecimiento de la radiodifusión en la década de 1920.

Instititutional Opportunities and Challenges of the Wireless City

2010 ◽  
pp. 365-381
Author(s):  
Sukumar Ganapati
Keyword(s):  
Wireless Communications ◽  
Emergency Management ◽  
Digital Divide ◽  
Local Level ◽  
Wireless Security ◽  
Wireless Devices ◽  
Infrastructure Provision ◽  
Wireless Infrastructure

This chapter explores the institutional opportunities and challenges of adopting wireless communications for mobile government at the local level. The basic ingredients of wireless for m-government include the wireless devices and the wireless infrastructure. The proliferation of wireless devices provides opportunities for transforming field operations, coordinating emergency management, enhancing citizen services and participation, and narrowing the digital divide. Challenges, however, exist in terms of wireless security, interoperability, and infrastructure provision.

Recent Trends in Antennas for Modern Wireless Communications

2018 ◽  
pp. 1413-1435
Author(s):  
Mohammad Abdul Matin
Keyword(s):  
Wireless Communications ◽  
Mobile Communication ◽  
Satellite Communication ◽  
Rapid Development ◽  
Wireless Devices ◽  
Analysis And Synthesis ◽  
Communication Devices ◽  
Recent Trends ◽  
Airborne Vehicle ◽  
New Generation

The rapid development in wireless communications has demanded multiband or wideband antennas to support wireless communication devices such as smart phones, tablets, laptop computers, radar system, satellite communication, airplane, and unmanned airborne vehicle (UAV) radar. It has also demanded compact wireless devices that allow more space to integrate other electronic components. The aim of this chapter is to provide an idea of current R&D trends and novel approaches in design, analysis and synthesis of broadband, multiband and reconfigurable antennas for the new generation of mobile communication devices, as well as for UWB communications, radars and so on.

Wireless Technologies to Enable Electronic Business

2010 ◽  
pp. 511-517
Author(s):  
Richi Nayak
Keyword(s):  
Wireless Communications ◽  
Mobile Computing ◽  
Exponential Growth ◽  
Electronic Business ◽  
Wireless Technology ◽  
Wireless Devices ◽  
Wireless Technologies ◽  
Simple Analog

Research and practices in electronic business (e-business) have witnessed an exponential growth in the last few years (Liautand & Hammond, 2001). Wireless technology has also evolved from simple analog products designed for business use to emerging radioactive, signal-based wireless communications (Shafi, 2001). The tremendous potential of mobile computing and e-business has created a new concept of mobile e-business or e-business over wireless devices (m-business).

‘Adunation’ of the Nation: Towards a Republican Esprit de Corps

Ensemblance ◽  
2020 ◽  
pp. 61-86
Author(s):  
Luis de Miranda
Keyword(s):  
Eighteenth Century ◽  
Nation Building ◽  
Laissez Faire ◽  
The Impact ◽  
As If ◽  
The Revolution

This chapter demonstrates the importance of the idea of esprit de corps, both as a critical concept and as an ideal, in the French process of nation-building. It also demonstrates the ambiguity of Revolutionary thought in what regards the laissez-faire economy and the critique and destruction of communities of labour (‘corporations’). In the second half of the eighteenth century, thanks to the influence of the Encyclopédie and the impact of the campaign against the Jesuits, the phrase ‘esprit de corps’ started to spread in print. A new idea was to grow in influence until the Revolution: a synthesis between the Philosophes’ national-individualism and the Jesuits’ Catholicism, according to which patriotism and devotion to the nation were analogous to a healthier and grander form of esprit de corps, as if passion and partisanship could be redeemed by nationalism.

Recent Trends in Antennas for Modern Wireless Communications

2016 ◽  
pp. 1-26
Author(s):  
Mohammad Abdul Matin
Keyword(s):  
Wireless Communications ◽  
Mobile Communication ◽  
Satellite Communication ◽  
Rapid Development ◽  
Wireless Devices ◽  
Analysis And Synthesis ◽  
Communication Devices ◽  
Recent Trends ◽  
Airborne Vehicle ◽  
New Generation

The rapid development in wireless communications has demanded multiband or wideband antennas to support wireless communication devices such as smart phones, tablets, laptop computers, radar system, satellite communication, airplane, and unmanned airborne vehicle (UAV) radar. It has also demanded compact wireless devices that allow more space to integrate other electronic components. The aim of this chapter is to provide an idea of current R&D trends and novel approaches in design, analysis and synthesis of broadband, multiband and reconfigurable antennas for the new generation of mobile communication devices, as well as for UWB communications, radars and so on.

Searching for the Ukrainian Revolution

Slavic Review ◽  
2019 ◽  
Vol 78 (4) ◽  
pp. 942-948 ◽  
Author(s):  
Serhy Yekelchyk
Keyword(s):  
Nation Building ◽  
Russian Revolution ◽  
National Liberation ◽  
Interpretive Model ◽  
Liberation Struggle ◽  
Inclusive Analysis ◽  
The Revolution

This article discusses the possible ways of conceptualizing the revolutionary and nation-building struggles in the Ukrainian lands between 1917 and 1921. The author argues that these processes, which stemmed from the collapse of two European empires, display features not easily accommodated within the traditional interpretive model of the “Russian Revolution.” In comparison, the Ukrainian concept of “national-liberation struggle” is too reductionist and teleological. The term “Ukrainian Revolution,” which was widely used by the participants of these events, is better suited for an inclusive analysis of this period that emphasizes the significance of the national factor without ignoring the others. Rather than “nationalizing” the story of the Revolution, such an approach highlights the transnational dimensions of the Ukrainian question.

Development of an H-shaped antenna with FR4 for 1–10 GHz wireless communications

2021 ◽  
pp. 004051752110031
Author(s):  
S Kannadhasan ◽  
R Nagarajan
Keyword(s):  
Wireless Communications ◽  
Relative Permittivity ◽  
Research Work ◽  
Wireless Networking ◽  
Dual Frequency ◽  
Wireless Devices ◽  
Modern Life ◽  
Zener Diode ◽  
Antenna Structure ◽  
Transmitting Model

Wireless networking is now central to modern life, and is anticipated to become ever more pervasive. Therefore, there may be several possible uses for combining lightweight fabric antennas. A flexible fabric is used to increase convenience, and the inclusion of antennas in garments ensures they do not have to be hand-held. Wireless deployment, a single-feed and a dual-frequency H-shaped antenna is presented. The transmitting model is used to build the H-shaped antenna. Varying the dual frequency is achieved with the aid of a capacitive range between 3.85 and 1.88 pF and a Zener diode. The operating frequencies for the cellular implementations of the H-shaped antenna are 2.5–4.5 GHz. The configuration of the antenna is built on an 80 mm × 60 mm dielectric by using FR4 epoxy substrate; the scale of the switch dimension is 0.7 mm × 1.4 mm with relative permittivity of 3.68 and the height of the substratum is 1.6 mm. The patch of the planned structure is supplied by a 50 ohm matching impedance co-axial cable. In this research work the proposed antenna structure gain is 8.2 dBi (86%) for wireless devices. Under the current structure, the high and minimal return losses are from –39.05 to –18.68 dB. The highest and lowest Voltage Standing Wave Ratio values of the proposed structure are 1.78 and 1.02, respectively.

scholarly journals Ho Chi Minh’s thought about cultural diplomacy

2021 ◽  
Vol 12 (6) ◽  
pp. 2538-2546
Author(s):  
Vu Kim Diem, Do Thi Ngoc Quy
Keyword(s):  
Cultural Diplomacy ◽  
Nation Building ◽  
Current Status ◽  
National Liberation ◽  
General Overview ◽  
The Revolution

Ho Chi Minh’s thought is a comprehensive and profound system of views on the fundamental issues of the Vietnamese Revolution, the result of the creative application and development of Marxism-Leninism in specific conditions of Vietnam in each stage of the revolution to ensure the victory of the resistance war and successful national construction. Today, domestic and world conditions have changed deeply, but Ho Chi Minh’s ideology in general and Ho Chi Minh’s ideology in particular still have great significance. The diplomatic culture was formed and developed with the process of forming his thoughts on the path of national liberation and socialist nation-building in Vietnam. This study provides a general overview of Ho Chi Minh’s thoughts on diplomatic culture and assesses the current status of the process of applying those perspectives to  Vietnam's current diplomatic culture.

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