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.

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.

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.

Incoming and outgoing academic mobility in Russia and abroad: main trends, administrative challenges

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Tamara K. Rostovskaya ◽  
Vera I. Skorobogatova ◽  
Elena E. Pismennaya ◽  
Vadim A. Bezverbny
Keyword(s):  
Comparative Analysis ◽  
Human Resource Development ◽  
Asia Pacific ◽  
Successful Implementation ◽  
Systematic Observation ◽  
Academic Mobility ◽  
Content Type ◽  
Postgraduate Students ◽  
The Status ◽  
Young Researchers

PurposeThe goal of research consists in identifying trends in academic mobility in Russia and abroad, primarily that of academic staff; contributing suggestions on improving the management of academic mobility processes.Design/methodology/approachThe research uses methods of observation, comparative analysis, as well as statistical method and generalization method supported by the facts. A comparative analysis of statistical data is made; these data were taken from the publicly available reliable sources of the Organization for Economic Cooperation and Development, Human Resource Development Department of the Asia–Pacific and others.FindingsIt was found that the level of academic mobility rises with the rising level of education. The overall mobility of tertiary students – in particular, students and postgraduate students, is growing throughout the world. Mobile postgraduate students demonstrate better research results during training. Even short-term academic internships for postgraduate students contribute to the successful implementation of research projects at their host university and the spread of new knowledge in general. In general, academic mobility contributes to the accumulation of human and cultural scientific capital that makes a connection between research communities in different countries. Based on the research findings, it was found that no statistics are collected on the foreign academic mobility of postgraduate students and young researchers in Russia. Based on the analysis, it may be deduced that the scope of academic mobility is extremely small. European countries are the main countries of prevailing academic mobility.Originality/valueGiven the importance of participation in foreign academic mobility for the development of the competitiveness of national science in Russia, it appears that there is a need to monitor the foreign academic mobility of Russian postgraduate students and young researchers. The monitoring of foreign academic mobility of Russian postgraduate students and young researchers is a systematic observation of the status and conditions of training highly qualified personnel in Russian educational establishments and scientific organizations, providing educational authorities of Russia with up-to-date information on the status of outgoing academic mobility necessary for analyzing and forecasting the development of the national education system and national labor market.

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.

The Accounting, Auditing & Accountability Journal Community in its 30th year

2017 ◽  
Vol 30 (8) ◽  
pp. 1642-1676 ◽  
Author(s):  
Garry D. Carnegie ◽  
Christopher J. Napier
Keyword(s):  
Relevant Literature ◽  
Research Community ◽  
Asia Pacific ◽  
Content Type ◽  
Main Research ◽  
Accounting Research ◽  
Community Activities ◽  
Publication Patterns ◽  
Thought Leader ◽  
The Status

Purpose The purpose of this paper is to examine the origins and development of the “Accounting, Auditing & Accountability Journal (AAAJ) Community”, a flourishing international interdisciplinary accounting research community. This scholarly community has emerged over some 30 years from the publication in 1988 of the inaugural issue of AAAJ under the joint editorship of James Guthrie and Lee Parker. This historical account discusses the motivation for establishing the journal and the important publishing initiatives, developments and trends across this period. The study positions the journal as a key thought leader, the catalyst for other Community activities such as the Asia-Pacific Interdisciplinary Research in Accounting conference. Design/methodology/approach The investigation involved a selective review of the contents of AAAJ, particularly the annual editorials published since inception, and other relevant literature, analysis of the main research themes and the most cited papers, and oral history interviews with the joint editors. The future prospects for the AAAJ Community are addressed. Findings The AAAJ Community has shaped and led developments in interdisciplinary accounting research. Recognised for innovation and with a reputation for nurturing scholars, AAAJ continues to grow in stature as one of the world’s leading accounting journals, challenging the status quo and fostering inclusive scholarship. Research limitations/implications The study does not examine the journal’s publication patterns nor assess in detail the research studies that have been published in the journal. Originality/value The study recognises AAAJ as central to the development of an interdisciplinary accounting research community, firmly located in the sociological, critical and interpretative tradition also associated with some other leading accounting journals.

Lithium niobate devices in switching and multiplexing

1989 ◽  
Vol 329 (1603) ◽  
pp. 83-92 ◽  
Keyword(s):  
Lithium Niobate ◽  
High Speed ◽  
Optical Switching ◽  
Integrated Optics Devices ◽  
Photonic Switching ◽  
Time Space ◽  
Trade Offs ◽  
The Status ◽  
High Speed Data ◽  
And Performance

Integrated-optics devices in lithium niobate have reached a significant maturity in recent years, and several complex devices have been demonstrated. In addition to performing modulation of light in fibre-optic transmission systems, lithium niobate devices currently offer the only components for photonic switching. Thus lithium niobate devices can be used as spatial, temporal and wavelength switches in high-speed and low-speed systems. In these systems electronic signals control the lithium niobate switches, which process the optical information and which are optically interfaced to optical fibres. Hence I am not concerned with all-optical switching. Examples of applications are multiplexing and demultiplexing of high-speed data streams, bit-by-bit or word-by-word switching in, for example, time-space-time stages or in access couplers in high-speed bus systems. Switch arrays, generally operating at lower speeds (below 1 GHz), can be used for network rearrangement, digital crossconnect, protection switching and generally in situations where the frequency and code transparency of the devices can be used to advantage. The status of lithium niobate devices for switching is reviewed, and performance limitations (including those imposed by polarization properties) and trade-offs are discussed, emphasizing time- and space-switching devices and applications.

scholarly journals Application of Deep Learning and Symmetrized Dot Pattern to Detect Surge Arrester Status

2022 ◽  
Vol 12 (2) ◽  
pp. 650
Author(s):  
Meng-Hui Wang ◽  
Shiue-Der Lu ◽  
Chun-Chun Hung
Keyword(s):  
Neural Network ◽  
High Speed ◽  
Image Feature ◽  
Power Equipment ◽  
K Nearest Neighbors ◽  
Surge Arresters ◽  
Fault Type ◽  
The Status ◽  
High Speed Data Acquisition ◽  
High Speed Data

Surge arresters primarily restrain lightning and switch surges in the power system to avoid damaging power equipment. When a surge arrester fails, it leads to huge damage to the power equipment. Therefore, this study proposed the application of a convolutional neural network (CNN) combined with a symmetrized dot pattern (SDP) to detect the state of the surge arrester. First, four typical fault types were constructed for the 18 kV surge arrester, including its normal state, aging of the internal valve, internal humidity, and salt damage to the insulation. Then, the partial discharge signal was measured and extracted using a high-speed data acquisition (DAQ) card, while a snowflake map was established by SDP for the features of each fault type. Finally, CNN was used to detect the status of the surge arrester. This study also used a histogram of oriented gradient (HOG) with support vendor machine (SVM), backpropagation neural network (BPNN), and k-nearest neighbors (KNN) for image feature extraction and identification. The result shows that the proposed method had the highest accuracy at 97.9%, followed by 95% for HOG + SVM, 94.6% for HOG + BPNN, and 91.2% for HOG + KNN. Therefore, the proposed method can effectively detect the fault status of surge arresters.

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.

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