Editorial for Special Issue on Analysis and Performance of Wireless Mobile Systems

2021 ◽  
Vol 168 ◽  
pp. 178-179
Keyword(s):  
Mobile Systems ◽  
Special Issue ◽  
And Performance ◽  
Wireless Mobile

scholarly journals Implementation and Performance Evaluation of Two Fuzzy-Based Handover Systems for Wireless Cellular Networks

2009 ◽  
Vol 5 (4) ◽  
pp. 339-361 ◽  
Author(s):  
Gjergji Mino ◽  
Leonard Barolli ◽  
Fatos Xhafa ◽  
Arjan Durresi ◽  
Akio Koyama
Keyword(s):  
Wireless Networks ◽  
Performance Evaluation ◽  
Mobile Networks ◽  
Cellular Systems ◽  
Mobile Systems ◽  
Mobile Cellular ◽  
Ping Pong ◽  
And Performance ◽  
Mobile Cellular Systems ◽  
Wireless Mobile

Wireless mobile networks and devices are becoming increasingly popular to provide users the access anytime and anywhere. We are witnessing now an unprecedented demand for wireless networks to support both data and real-time multimedia traffic. The wireless mobile systems are based on cellular approach and the area is covered by cells that overlap each other. In mobile cellular systems the handover is a very important process. Many handover algorithms are proposed in the literature. However, to make a better handover and keep the QoS in wireless networks is very difficult task. For this reason, new intelligent algorithms should be implemented to deal with this problem. In this paper, we carried out a comparison study of two handover systems based on fuzzy logic. We implement two Fuzzy-Based Handover Systems (FBHS) called FBHS1 and FBHS2. The performance evaluation via simulations shows that FBHS2 has better behavior than FBHS1 and can avoid ping-pong effect in all simulation cases.

scholarly journals ECLB: Edge-Computing-Based Lightweight Blockchain Framework for Mobile Systems

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Qingqing Xie ◽  
Fan Dong ◽  
Xia Feng
Keyword(s):  
Mobile Devices ◽  
Security Analysis ◽  
Edge Computing ◽  
Mobile Systems ◽  
Superior Performance ◽  
Consensus Protocol ◽  
Open Problems ◽  
Blockchain Technology ◽  
Natural Solution ◽  
And Performance

The blockchain technology achieves security by sacrificing prohibitive storage and computation resources. However, in mobile systems, the mobile devices usually offer weak computation and storage resources. It prohibits the wide application of the blockchain technology. Edge computing appears with strong resources and inherent decentralization, which can provide a natural solution to overcoming the resource-insufficiency problem. However, applying edge computing directly can only relieve some storage and computation pressure. There are some other open problems, such as improving confirmation latency, throughput, and regulation. To this end, we propose an edge-computing-based lightweight blockchain framework (ECLB) for mobile systems. This paper introduces a novel set of ledger structures and designs a transaction consensus protocol to achieve superior performance. Moreover, considering the permissioned blockchain setting, we specifically utilize some cryptographic methods to design a pluggable transaction regulation module. Finally, our security analysis and performance evaluation show that ECLB can retain the security of Bitcoin-like blockchain and better performance of ledger storage cost in mobile devices, block mining computation cost, throughput, transaction confirmation latency, and transaction regulation cost.

scholarly journals The Job Demands–Resources model: Challenges for future research

2011 ◽  
Vol 37 (2) ◽  
Author(s):  
Evangelia Demerouti ◽  
Arnold B. Bakker
Keyword(s):  
Safety Climate ◽  
Job Demands ◽  
Well Being ◽  
Work Place ◽  
Future Research ◽  
Special Issue ◽  
Quantitative Studies ◽  
Managerial Implications ◽  
Value Add ◽  
And Performance

Motivation: The motivation of this overview is to present the state of the art of Job Demands–Resources (JD–R) model whilst integrating the various contributions to the special issue.Research purpose: To provide an overview of the JD–R model, which incorporates many possible working conditions and focuses on both negative and positive indicators of employee well-being. Moreover, the studies of the special issue were introduced.Research design: Qualitative and quantitative studies on the JD–R model were reviewed to enlighten the health and motivational processes suggested by the model.Main findings: Next to the confirmation of the two suggested processes of the JD–R model, the studies of the special issue showed that the model can be used to predict work-place bullying, incidences of upper respiratory track infection, work-based identity, and early retirement intentions. Moreover, whilst psychological safety climate could be considered as a hypothetical precursor of job demands and resources, compassion satisfaction moderated the health process of the model.Contribution/value-add: The findings of previous studies and the studies of the special issue were integrated in the JD–R model that can be used to predict well-being and performance at work. New avenues for future research were suggested.Practical/managerial implications: The JD–R model is a framework that can be used for organisations to improve employee health and motivation, whilst simultaneously improving various organisational outcomes.

Guest editorialHappy endings and successful stories in public sector financial management: a lesson drawing perspective

2021 ◽  
Vol 34 (4) ◽  
pp. 393-406
Author(s):  
Sandra Cohen ◽  
Francesca Manes-Rossi ◽  
Isabel Brusca ◽  
Eugenio Caperchione
Keyword(s):  
Public Sector ◽  
Financial Management ◽  
Local Governments ◽  
Financial Statements ◽  
Special Issue ◽  
Content Type ◽  
Public Financial Management ◽  
Political Implications ◽  
Public Sector Organizations ◽  
And Performance

PurposePublic financial management has been characterized by the implementation of several innovations and reforms that embrace different areas and scope. These reforms aim at expenditure rationalization and efficiency enhancement, as well as the improvement of accountability and performance. Despite research having already paid attention to these innovations and reforms, the strengths, weaknesses, opportunities and threats empirically faced by public sector organizations still need to be investigated. This editorial introduces the special issue by emphasizing on the lessons that can be learned from past reform experiences.Design/methodology/approachThe editorial synthesizes some of the findings of the previous literature and evidences the necessity of both successful and unsuccessful stories, presenting a future agenda of research which emphasizes the use of case studies as a suitable method to get insights out of multiple experiences.FindingsThe four articles presented in this special issue, covering the topics of accrual accounting adoption, the use of financial statements by councilors, the use of performance information by politicians and the outsourcing of auditing in local governments, provide an overview of the efforts and challenges faced by public administrations by analyzing the influence of the institutional context, the relevance of political implications and their practical footprint.OriginalityIn this special issue, four successful stories that touch upon multiple facets of public financial management in different country contexts are discussed, and they signal important takeaway messages for further reforms.

Building Highly Dependable Wireless Web Services

2010 ◽  
Vol 8 (4) ◽  
pp. 1-16 ◽  
Author(s):  
Wenbing Zhao
Keyword(s):  
Web Services ◽  
Service Oriented Architecture ◽  
State Of The Art ◽  
Mobile Business ◽  
Business Transactions ◽  
High Dependability ◽  
Service Oriented ◽  
And Performance ◽  
Wireless Mobile ◽  
The Web

In this paper, the authors introduce Web services technology and its applications to mobile business transactions. This paper shows that the Web services technology is a powerful tool to build next-generation e-Commerce applications for wireless mobile devices following the service-oriented architecture. Such an approach would bring significant benefits to organizations involved with e-Commerce. The authors further discuss the importance of ensuring high dependability of Web services and provide a literature review of state-of-the-art techniques that are critical to the implementation of practical and dependable wireless Web services. Finally, research on the design, implementation, and performance evaluation of a fault tolerance framework for wireless Web services are described.

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