Search results
1 – 10 of 76Keyvan Rezghdeh and Sajjad Shokouhyar
The main purpose of the present study was to improve and develop previously proposed models for Iran telecommunication networks. It should be noted that the six-dimensional (6D…
Abstract
Purpose
The main purpose of the present study was to improve and develop previously proposed models for Iran telecommunication networks. It should be noted that the six-dimensional (6D) sustainability model used in this study will be a useful and comprehensive model for industries. Since, the new dimension of IT along with the five well-known economic, social, environmental, technical and institutional aspects of organizations is considered to have great impacts on supply chain sustainability; the proposed framework can be practical.
Design/methodology/approach
According to the related literature review, there are two research streams in supply chain management. The first stream is exploratory research, seeking out conceptual discussions in this area. The second one is associated with mathematical models and techniques, aiming to set decision-making rules in this regard (Agrell et al., 2004). In this study, evaluation was performed using the FMEA method as an analytical technique based on the principle of pre-occurrence prevention to identify potential failure factors in sensitive systems (Mohammadfam and Kianfari, 2008).
Findings
After identifying the risks and causes of the incidence and effects and consequences of risks, preventive and risk control measures and advisory strategies were presented. Customers with 45.76% share in critical risks are threatening to maintain supply chain in these companies. During this study, it was found that 33.9% of the main source of supply chain critical risks was customers, constituting 45.76% of such risks, accompanied by organization, having a 38.88% share of critical risk generation. The study findings also revealed that 33.9% of critical risks were mainly (equally) related to economic and technical aspects of supply chain sustainability in telecommunication networks. Moreover, as a newly-introduced sixth dimension, IT represented 10.17% of critical risks threatening supply chain sustainability in such networks. Critical risks are mainly related to the economic and technical aspects (equally) with the sustainability of the telecommunication networks supply chain. Also, as a new finding and the sixth dimension, 10.17% of the critical risks that threaten the sustainability of the telecommunication networks supply chain have the information technology dimension.
Originality/value
The internet and fixed and mobile data services are provided by several private companies in Iran, which are relatively similar in terms of their supply chains. In order to manage the sustainability of Iran's telecommunication supply chain, telecommunication networks affiliated to Iran Telecommunication Company (ITC), operating in the field of data and internet services and fixed telephone were selected in 31 provinces. The intended networks were also providing an important part of the country's needs including Mobile Telecommunication Company of Iran, a subsidiary of Iran's telecommunication networks, as one of the top companies in this industry. Accordingly, all the networks studied in this study needed to be identified with regard to communication sustainability risks, since they provide management solutions to each other by segregating risks. In this study, 68 managers and 72 experts participated in different work teams of telecommunication networks.
Details
Keywords
Yingli Wang, Vasco Sanchez Rodrigues and Leighton Evans
The purpose of this paper is to investigate empirically how information and communication technologies (ICT) can contribute to reduction of CO2 emissions in road freight transport…
Abstract
Purpose
The purpose of this paper is to investigate empirically how information and communication technologies (ICT) can contribute to reduction of CO2 emissions in road freight transport and to identify opportunities for further improvements.
Design/methodology/approach
This research adopts a multiple case study approach with three leading UK grocery retailers as exemplars of fast-moving consumer goods retailers, conducted using multiple data collection techniques including interviews, system demonstrations, onsite observations and the use of archive information.
Findings
ICT solutions have a direct positive impact on CO2 emissions reduction but opportunities to further reduce CO2 emissions are perceived as lying beyond retailers’ own distribution networks. These opportunities are not fully utilised due to the complexities of collaborative ICT provisions and retailers’ reluctance to share information with competitors.
Research limitations/implications
A limitation of the study is that it is exploratory and only three cases were examined. Even though these three retailers represent over 60 per cent of the UK grocery retail sector, other retailers may deploy significantly different ICT applications.
Practical implications
The research provides an overarching insight for businesses on how to leverage the existing and emerging information technologies for environmental and economic benefits.
Originality/value
While sustainability issues have received increasing attention recently, the role of ICT in freight transport for CO2 emissions reduction has not been investigated in depth and its impact is largely unknown. This research advances understanding about how ICT contributes CO2 emissions reductions and provides a framework for further investigation.
Details
Keywords
Multipath routing holds a great potential to provide sufficient bandwidth to a plethora of applications in wireless sensor networks. In this paper, we consider the problem of…
Abstract
Multipath routing holds a great potential to provide sufficient bandwidth to a plethora of applications in wireless sensor networks. In this paper, we consider the problem of interference that can significantly affect the expected performances. We focus on the performance evaluation of the iterative paths discovery approach as opposed to the traditional concurrent multipath routing. Five different variants of multipath protocols are simulated and evaluated using different performance metrics. We mainly show that the iterative approach allows better performances when used jointly with an interference-aware metric or when an interference-zone marking strategy is employed. This latter appears to exhibit the best performances in terms of success ratio, achieved throughput, control messages overhead as well as energy consumption.
Details
Keywords
Volker Stocker, William Lehr and Georgios Smaragdakis
The COVID-19 pandemic has disrupted the ‘real’ world and substantially impacted the virtual world and thus the Internet ecosystem. It has caused a significant exogenous shock that…
Abstract
The COVID-19 pandemic has disrupted the ‘real’ world and substantially impacted the virtual world and thus the Internet ecosystem. It has caused a significant exogenous shock that offers a wealth of natural experiments and produced new data about broadband, clouds, and the Internet in times of crisis. In this chapter, we characterise and evaluate the evolving impact of the global COVID-19 crisis on traffic patterns and loads and the impact of those on Internet performance from multiple perspectives. While we place a particular focus on deriving insights into how we can better respond to crises and better plan for the post-COVID-19 ‘new normal’, we analyse the impact on and the responses by different actors of the Internet ecosystem across different jurisdictions. With a focus on the USA and Europe, we examine the responses of both public and private actors, with the latter including content and cloud providers, content delivery networks, and Internet service providers (ISPs). This chapter makes two contributions: first, we derive lessons learned for a future post-COVID-19 world to inform non-networking spheres and policy-making; second, the insights gained assist the networking community in better planning for the future.
Details
Keywords
Daxin Tian, Weiqiang Gong, Wenhao Liu, Xuting Duan, Yukai Zhu, Chao Liu and Xin Li
This paper aims to introduce vehicular network platform, routing and broadcasting methods and vehicular positioning enhancement technology, which are three aspects of the…
Abstract
Purpose
This paper aims to introduce vehicular network platform, routing and broadcasting methods and vehicular positioning enhancement technology, which are three aspects of the applications of intelligent computing in vehicular networks. From this paper, the role of intelligent algorithm in the field of transportation and the vehicular networks can be understood.
Design/methodology/approach
In this paper, the authors introduce three different methods in three layers of vehicle networking, which are data cleaning based on machine learning, routing algorithm based on epidemic model and cooperative localization algorithm based on the connect vehicles.
Findings
In Section 2, a novel classification-based framework is proposed to efficiently assess the data quality and screen out the abnormal vehicles in database. In Section 3, the authors can find when traffic conditions varied from free flow to congestion, the number of message copies increased dramatically and the reachability also improved. The error of vehicle positioning is reduced by 35.39% based on the CV-IMM-EKF in Section 4. Finally, it can be concluded that the intelligent computing in the vehicle network system is effective, and it will improve the development of the car networking system.
Originality/value
This paper reviews the research of intelligent algorithms in three related areas of vehicle networking. In the field of vehicle networking, these research results are conducive to promoting data processing and algorithm optimization, and it may lay the foundation for the new methods.
Details
Keywords
Carlos M. Baldo, Richard Vail and Julie Seidel
The aim of this article is to describe Huawei's internationalization process in Venezuela and show how socio-political and economic conditions helped to expedite the company's…
Abstract
Purpose
The aim of this article is to describe Huawei's internationalization process in Venezuela and show how socio-political and economic conditions helped to expedite the company's development in this Latin American nation between 2006 and 2019. Through this internationalization process, Huawei participated in a large technological transition in Venezuelan telecommunications.
Design/methodology/approach
This research uses an integrative approach, developing a quasi-case study from a review of the academic literature, contemporary news stories and institutional and practitioner documents.
Findings
The review indicates that Huawei was engaged in business with the Venezuelan phone company before its renationalization. Secondly, Huawei's internationalization was a beneficiary of the increased relations between the Venezuelan and Chinese governments, mainly through “oil for loans/goods” agreements. Lastly, this internationalization process includes wholly owned subsidiaries, direct export, greenfield and government joint ventures.
Practical implications
This research provides an understanding to other firms and strategists about the benefits of strong bilateral economic relationships between home and host countries.
Originality/value
This paper is among the first academic articles that describe the internationalization process of Huawei in Venezuela. Considering the host country's changing political and economic conditions during the last 20 years, such research may provide a perspective for considering other Chinese business expansions in Venezuela and Latin America.
Details
Keywords
Bakhodyr Khodjaev and Se Kwang Oh
Advantage of its geologic location lying at the heart of Central Asia with a large internal market of 27 million people and easy access to CIS market of over 142 million people…
Abstract
Advantage of its geologic location lying at the heart of Central Asia with a large internal market of 27 million people and easy access to CIS market of over 142 million people enables Uzbekistan to form the hub of the region. Its transport and communications networks are connected with the other Central Asian countries. FIEZ in Navoi would be the representative model in CIS and be built on the best practice of next generation model as special national economic zones. Considering that the most of modern business is made through the web connection basis even for the flight management, cargo trace and other controls and operations, the importance of web connection should be stable, reliable and affordable for tenants and business entities at the FIEZ in Navoi. In these regards, cooperation work of both countries to study more details mentioned in this paper as well as other applicable models from Korean Free Economic Zone cases for the full picture of execution and promotion of the FIEZ in Navoi, Uzbekistan is considered.
Details