scholarly journals High-speed data provision via mobile networks in Latin America and the Caribbean

2017 ◽  
Vol 19 (4) ◽  
pp. 287-301 ◽  
Author(s):  
Peter Curwen ◽  
Jason Whalley
Keyword(s):  
Latin American ◽  
Mobile Networks ◽  
High Speed ◽  
Individual Country ◽  
Content Type ◽  
Caribbean Islands ◽  
Data Provision ◽  
High Speed Data ◽  
The Media ◽  
New Entry

Purpose The purpose of this paper is to examine in a fully up-to-date manner the position in respect of the licensing and launch of long-term evolution (LTE) (4G) in a region that attracts relatively little attention in academic work and the media. The purpose is also to examine the role of incumbency and to assess to what extent the licensing of LTE can make a difference to the structure of mobile markets in the region. Design/methodology/approach The first step has been to compile extensive databases with respect to the licensing and launch of high-speed networks in the region, arranged so as to emphasize the position of the dominant incumbents. A distinction is drawn between the larger, mainly Latin American, countries and the smaller, mainly Caribbean, islands. There is a discussion of new entry and its potential to disrupt incumbents. Findings The position of dominance held by two operators – América Móvil and Telefonica in the larger countries and by Digicel and Cable & Wireless Communications (Liberty Global) in the islands – is brought to the fore, and the analysis demonstrates that this is unlikely to be more than marginally affected by regulatory attempts to restructure markets by, for example, fostering new entry. Research limitations/implications This is necessarily an overview paper as more than 50 countries/islands are covered, so detailed individual country studies are precluded. Practical implications The way forward, such as it is, can only be illuminated by first clarifying the current state of play. Originality/value The databases that underpin the analysis are author-compiled and entirely original.

scholarly journals High-speed data in Africa: an assessment of provision via mobile networks

2018 ◽  
Vol 20 (1) ◽  
pp. 23-41 ◽  
Author(s):  
Peter Curwen ◽  
Jason Whalley
Keyword(s):  
Mobile Networks ◽  
High Speed ◽  
Design Methodology ◽  
Data Networks ◽  
Individual Country ◽  
Content Type ◽  
The Public ◽  
Term Evolution ◽  
High Speed Data

Purpose The purpose of this paper is to examine the current provision of high-speed data networks in the African continent, in particular taking into account both licences and launches related to long-term evolution (LTE). Design/methodology/approach An up-to-date underlying database of licences and launches relating to LTE in Africa has been compiled. There is also a review of the international operators that are playing a significant role in LTE provision. A number of individual country case studies are considered. Issues of corruption are addressed. Findings Africa is interesting because it has been a laggard in the development of high-speed data networks, but now finds itself in a position to leapfrog 3G technologies, and hence close the gap that had opened up compared to, for example, Europe and Asia. This process is effectively assisted by the lack of fixed-wire connectivity but has to take account of the difficulty of attracting the requisite investment. Research limitations/implications Databases relating to Africa are always difficult to compile. Originality/value Published work relating to mobile networks in Africa is not plentiful, and it is difficult to find relevant data in the public domain. A key aspect of the paper is that the database is entirely up-to-date.

High-speed data provision by mobile networks in the Asia-Pacific region

2018 ◽  
Vol 20 (3) ◽  
pp. 225-243
Author(s):  
Peter Curwen ◽  
Jason Whalley
Keyword(s):  
Mobile Networks ◽  
High Speed ◽  
Structural Changes ◽  
Initial Step ◽  
Asia Pacific ◽  
Large Individual ◽  
Content Type ◽  
The Status ◽  
Data Provision ◽  
High Speed Data

Purpose The purpose of this paper is to examine in a fully up-to-date manner the position in respect to the licensing and launch of long-term evolution (LTE) in a region that attracts relatively little attention when treated as a whole because the emphasis is usually upon the very large individual markets (China, India and Japan) contained within it. The purpose is also to examine the role of international groups and the extent to which the licensing of LTE can make a difference to the structure of mobile markets in the region. Design/methodology/approach The initial step was to compile extensive databases with respect to the licensing and launch of high-speed networks in the region – defined both narrowly and also to encompass countries that are often treated as part of the Middle East – arranged so as to emphasise the status of dominant incumbents. There is a discussion of new entry and its potential to disrupt incumbents. Findings For historical reasons, the region contains countries that have strong differences whether defined in terms of economic, social or cultural characteristics, and hence it has not been easy for a network with international aspirations to expand outside its home market nor for, say, European-based operators to gain a foothold. Attempts to introduce competition via new licences has also been problematic because of the strong, and sometimes very large, incumbents already present. Research limitations/implications This is necessarily an overview that uses selected data to describe the overall picture because of the substantial number of quite different markets surveyed. Practical implications It is possible to forecast how certain structural changes will occur – primarily the withdrawal of international groups such as Millicom that prefer to concentrate upon other regions. Originality/value The databases that underpin the analysis are author-compiled and entirely original.

Research on the delamination wear properties of the pure carbon strip at the high-sliding speed with electric current

2018 ◽  
Vol 70 (1) ◽  
pp. 76-83 ◽  
Author(s):  
Hongjuan Yang ◽  
Lin Fu ◽  
Yanhua Liu ◽  
Weiji Qian ◽  
Bo Hu
Keyword(s):  
Electric Current ◽  
High Speed ◽  
Normal Load ◽  
Copper Wire ◽  
Electrical Current ◽  
Wear Properties ◽  
Sliding Speed ◽  
Content Type ◽  
Delamination Wear ◽  
High Speed Data

Purpose This paper aims to investigate the delamination wear properties of a carbon strip in a carbon strip rubbing against a copper wire at the high-sliding speed (380 km/h) with or without electrical current. Design/methodology/approach The friction and wear properties of a carbon strip in a carbon strip rubbing against a copper wire are tested on the high-speed wear tester whose speed can reach up to 400 km/h. The test data have been collected by the high-speed data collector. The worn surfaces of the carbon strip are observed by the scanning electron microscope. Findings It was found that there was a significant increase of the delamination wear with the decrease of the normal load when the electric current is applied. The size of the flake-like peeling also increases with the decrease of normal load. The delamination wear extends gradually from the edge of the erosion pits to the surrounding area with the decrease of the normal load. However, the delamination wear never appears in the absence of electric current. It is proposed that the decreased normal load and the big electrical current are the major causes of the delamination wear of the carbon strip. Originality value The experimental test at high-sliding speed of 380 km/h was performed for the first time, and the major cause of the delamination was discovered in this paper.

BRI and railways in Latin America: how important are domestic politics?

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Diego Leiva
Keyword(s):  
Latin America ◽  
Latin American ◽  
High Speed ◽  
Domestic Politics ◽  
High Speed Train ◽  
Sources Of Information ◽  
Content Type ◽  
Secondary Sources ◽  
Chinese Investment ◽  
Chinese Foreign Direct Investment

PurposeChina's experience of investing in Latin America in one of the main sectors included in the BRI architecture, railways, has faced significant challenges: only one of four Chinese potential railway projects in Latin America has materialised. The purpose of this paper is to explore these challenges and to provide an explanation focusing on the importance of the “domestic politics” factor.Design/methodology/approachThe paper proposes a comparative study of four cases, developing a qualitative analysis based on an in-depth review of the literature and primary and secondary sources of information.FindingsThe findings suggest that domestic politics played a significant role in the outcomes of the Brazil–Peru Bi-Oceanic railway (changes in government), in Argentina's Belgrano Cargas modernisation project (multiple “domestic politics” factors, such as a presidential campaign), in Venezuela's failed Tinaco-Anaco high-speed train project (authoritarian turn/country's stability) and in Mexico's Querétaro-Ciudad de México high-speed train project (corruption and popular contestation). The paper suggests that one should not expect an easy or fast projection of the BRI in the region, at least in the short- and mid-term, because becoming familiar with the domestic politics of Latin American is a complex and gradual task.Originality/valueThe particular impact of the political risks related to domestic politics in the Chinese Foreign Direct Investment (FDI) in Latin America has not been extensively explored, especially in the railway sector. This paper intends to contribute to this literature gap by analysing four cases of Chinese investment in railways in Latin America, an area that has received little attention in the studies of the Chinese FDI in the region, and proposing an explanation of their outcomes focusing on the “domestic politics” factor.

A novel design of nano router with high-speed crossbar scheduler for digital systems in QCA paradigm

Circuit World ◽  
2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Kalpana Kasilingam ◽  
Paulchamy Balaiah
Keyword(s):  
High Speed ◽  
Complementary Metal Oxide Semiconductor ◽  
Cmos Technology ◽  
Modern Technology ◽  
Oxide Semiconductor ◽  
Large Area ◽  
Content Type ◽  
Compact Size ◽  
High Power Consumption ◽  
High Speed Data

Purpose The nano-router would be a mastery device for providing high-speed data delivery. Here nano-router with a space-efficient crossbar scheduler is used for making absolutely less consumption in power. Design/methodology/approach In the emerging modern technology, every one of us is expecting a delivery of data at a high speed. To achieve high-speed delivery the authors are using the router. The router used here is at nanoscale reading which provides a compact size. Findings This can be implemented using the modern tools called Quantum-dot Cellular Automata (QCA) which is operated without the use of a transistor. As conventional complementary metal oxide semiconductor (CMOS) designs have some limitations such as low density, high power consumption and requirement of a large area. Research limitations/implications To overcome these limitations the QCA is used. It characterizes capability is used to substituting CMOS technology. The round-robin fashion is used in a high-speed space-efficient crossbar scheduler. Practical implications The simulation of the planned circuit with notional information established the practical identity of the scheme. Social implications The proposed nano router can be stimulated in the QCA environment using the QCADesigner tool and the power of the router can be calculated with the QCADesigner–E tool. Originality/value The proposed nano router can be stimulated in the QCA environment using the QCADesigner tool and the power of the router can be calculated with the QCADesigner–E tool. In this work, the performance of the router can be done in both the QCA environment and CMOS technology.

The influence of risks on the outturn cost of ICT infrastructure network projects

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Khalid Almarri ◽  
Halim Boussabaine ◽  
Hamad Al Nauimi
Keyword(s):  
High Speed ◽  
Data Networks ◽  
Content Type ◽  
Infrastructure Network ◽  
Information And Communication ◽  
Project Risks ◽  
High Speed Data ◽  
Ict Infrastructure ◽  
The Relationship ◽  
Network Project

Purpose The internet of things (IoT) is becoming an increasingly inescapable part of society. IoT paradigm cannot function without the networking infrastructure. High-speed data networks are essential to enable the IoT future. Thus, the purpose of this study is on the identification of risks that influence the development, installation and operation of information and communication technology (ICT) infrastructure network project cost outcomes. So far, there has been little attention has been paid to risks problems in these types of IoT enabling projects. Design/methodology/approach This research follows a quantitative analysis approach. Data for this study were collected by a survey from 209 professionals. Multiple regression analysis was used to model the relationship between risks and outturn cost of infrastructure needed to enable the operation of IoT technologies. Findings The main risk factors that were identified were planning and development, people and management, operations, technology and hardware. Research limitations/implications This research has expanded the existing literature by documenting and clustering ICT infrastructure network project risks into themes, and has developed a scale (risk statements) for measuring such risks. Further, the research has advanced the understanding by identifying the most likely risks that will contribute to the overrun of these projects. Originality/value This research establishes a reliable regression method for the assessment of the risks that influence the development, installation and operation of ICT infrastructure network projects outturn cost. No other research has measured or studied the risks in this type of project.

Iran nuclear deal: from nationalism to diplomacy

2017 ◽  
Vol 6 (1) ◽  
pp. 2-16
Author(s):  
Mehdi Fakheri
Keyword(s):  
Latin American ◽  
Nuclear Power ◽  
Nuclear Energy ◽  
Nuclear Technology ◽  
African Countries ◽  
Individual Country ◽  
Content Type ◽  
Global Issue ◽  
Technical Capability ◽  
The Cost

Purpose Selected countries in the world have the technical capability of creating nuclear energy. Iran has striven to acquire the know-how to harness nuclear power and has been scientifically successful. However, it was sanctioned by the foremost world powers for doing so. The purpose of this paper is to analyze how the Iranian nuclear dossier came about and how it became a global issue, how it was resolved and who will benefit from its resolution. Design/methodology/approach The paper is designed to review the antecedents, to study the international community’s position, to analyze the outcomes and to make some recommendations. The study’s methodology is therefore analytical. Findings Access to nuclear technology is a political matter and those who are allowed to use it might be subject to the ideological preferences of those that have long had it. The holders of nuclear technology normally interact with allies to provide them with help to fulfill a nuclear power program under certain circumstances. If an individual country decides to go its own way and develop an indigenous technical capability, it will come under scrutiny and measures will be taken to control it. If those measures fail, sanctions and pressures will be employed to hamper the achievement of nuclear independence. In the absence of tangible results, negotiations will start and agreement may be reached based on the expertise of the two sides’ negotiators. A peaceful agreement could be a win-win solution if it respects the rights and responsibilities of the parties involved. Iran’s nuclear deal, if implemented properly, would be a success story and will shape future policies in the Middle East. Research limitations/implications The first prerequisite for research is to have access to credible literature. When dealing with a new phenomenon, researchers face the challenge of not having sufficient material to develop a hypothesis or respond to all the questions that they have to pose. For Iran’s nuclear deal hundreds of articles have been written, but few books. Furthermore, because of the delicacy and confidentiality of the negotiations undertaken, one cannot interview the authorities involved either. Practical implications There are some Asian, Latin American and African countries with similar plans concerning nuclear energy. The paper will provide food for thought to evaluate the cost of their decisions and make suggestions for how they should proceed so that they can be perceived to be acting properly. Social implications Although nuclear themes are largely political and a part of the security arena internationally, access to nuclear technology as a power source could have a significant impact on the social development of the countries pursuing nuclear energy programs. The paper studies the effect of the Iranian deal on health, education, social networks and civil society. Originality/value The author has been involved in part of the negotiating process and has, thus, been in a position to verify different information discussed in the global mass media. The subject is also a brand-new issue in international relations, since a peaceful solution was found for a scenario that had previously been solved by military intervention, without exception. Finally, it is interdisciplinary research with an innovative analysis approach.

New Mexico-China deals will boost investment and trade

2015 ◽  
Keyword(s):  
Latin American ◽  
High Speed ◽  
Trade Deficit ◽  
The United States ◽  
Departure Point ◽  
Content Type ◽  
Bilateral Relations ◽  
China Trade ◽  
Governance Challenges ◽  
Chinese Company

Subject Mexico-China trade and investment links. Significance President Enrique Pena Nieto and President Xi Jinping have met four times in less than two years, not counting multilateral summits -- of which the most recent was the January 8-9 summit with the Community of Latin American and Caribbean States (CELAC) in Beijing. Last November, also in Beijing, both governments signed wide-ranging agreements during a meeting on the sidelines of the APEC summit. After a decade of difficult bilateral relations stemming from Mexico's enormous trade deficit with China, Mexico is keen to increase investment ties. Nonetheless, the recent cancellation of a contract won by a Chinese company to build a high-speed train in Mexico cast a shadow over the visit. The misstep points to broader governance challenges as Mexico courts Chinese investors and implements wide-ranging economic reforms at home. Impacts New cultural exchanges will manifest the intention of both countries to reorient bilateral relations to emphasise cooperation. The recent Mexico-China deals are likely to trigger a reaction on the part of the United States to reinforce its ties with Mexico. The Mexico-OECD deal which will guide the new tender for the train project may mark a departure point in Mexico's anti-corruption fight.

scholarly journals A Study on Mobile Networks and Their Generations

2021 ◽  
pp. 201-205
Author(s):  
Dr. Kiran B Malagi ◽  
Adarsh K M ◽  
Brijesh Reddy ◽  
Anusha T R ◽  
Bindhu R
Keyword(s):  
Mobile Phones ◽  
Mobile Networks ◽  
High Speed ◽  
First Generation ◽  
Data Transfer ◽  
High Volume ◽  
Fourth Generation ◽  
High Speed Data ◽  
Telecommunications Services ◽  
Manufacturing Technologies

The main purpose of this paper is to provide detailed and comprehensive research on the emergence of various cell phone manufacturing technologies in wireless communication. In this paper we focus on studying mobile generations from 1G to 5G and future mobile phones. The first generation has fulfilled the basic needs of the voice, and the second generation has delivered a high volume and a large amount of integration. The third generation included high-speed data transfer which gave its users a ‘mobile broadband experience’. The fourth generation will provide access to a variety of telecommunications services, including advanced mobile services, supported by mobile networks and fixed networks. We have compared all the mobile phones that have been created so far based on their technology.

MIMO antenna miniaturization standards for future 5G

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Swetha Katragadda ◽  
PVY Jayasree
Keyword(s):  
Mobile Networks ◽  
Mobile Applications ◽  
High Speed ◽  
Data Rate ◽  
Wave Frequency ◽  
Antenna Design ◽  
Frequency Range ◽  
Content Type ◽  
Mimo Antenna ◽  
Trade Offs

PurposeThe fifth-generation technology 5G, the planned successor to 4G, is a new global standard for mobile networks that brings virtual to reality. 5G wireless technology enables the delivery of high speed, low latency, reliability, 100% coverage and availability to connect number of users as in massive IoT applications.Design/methodology/approachWith expeditious development in wireless communication, the need for enhanced characteristic antenna design such as the size of the antenna, high data rate, demand in traffic, bandwidth, gain and efficiency increases. Various antenna designs are to be explored to meet the needs and achieve trade-offs between antenna size vs cost, high gain and efficiency vs less loss, high B.W and data rate with the selection of appropriate substrate materials and various gain & isolation enhancement techniques.FindingsThis paper thus gives scope for miniaturized MIMO antenna design for mobile applications at mm-wave frequency range.Originality/valueThis paper thus gives scope for miniaturized MIMO antenna design for mobile applications at mm-wave frequency range.

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