Ad Hoc Pairings: Semantic Relationships and Mobile Devices

2016 ◽  
Author(s):  
Jason O. Germany ◽  
Keyword(s):  
Mobile Devices ◽  
Ad Hoc ◽  
Semantic Relationships

A New Threshold Password Authentication Scheme

2010 ◽  
Vol 143-144 ◽  
pp. 915-919
Author(s):  
Yung Cheng Lee
Keyword(s):  
Ad Hoc Networks ◽  
Mobile Devices ◽  
Ad Hoc ◽  
Mutual Authentication ◽  
Authentication Scheme ◽  
Network Infrastructure ◽  
Password Authentication ◽  
Unauthorized Access ◽  
Authentication Schemes ◽  
Hoc Networks

The well-known password authentication mechanisms are widely used in networks to protect resources from unauthorized access. The ad hoc networks, due to their dynamic and lack of network infrastructure features, require authentication schemes to ensure security. In this paper, we propose a new threshold password authentication scheme for ad hoc networks. Our scheme can be efficiently implemented in mobile devices, and can achieve mutual authentication with registered users.

scholarly journals Self-organizing topology for energy-efficient ad-hoc communication networks of mobile devices

2020 ◽  
Author(s):  
Indushree Banerjee ◽  
Martijn Warnier ◽  
Frances M. T Brazier
Keyword(s):  
Communication Network ◽  
Mobile Devices ◽  
Communication Networks ◽  
Energy Efficient ◽  
Ad Hoc ◽  
Preferential Attachment ◽  
Scale Free ◽  
Simulated Environment ◽  
Adaptive Topology ◽  
Hoc Networks

Abstract When physical communication network infrastructures fail, infrastructure-less communication networks such as mobile ad-hoc networks (MANET), can provide an alternative. This, however, requires MANETs to be adaptable to dynamic contexts characterized by the changing density and mobility of devices and availability of energy sources. To address this challenge, this paper proposes a decentralized context-adaptive topology control protocol. The protocol consists of three algorithms and uses preferential attachment based on the energy availability of devices to form a loop-free scale-free adaptive topology for an ad-hoc communication network. The proposed protocol has a number of advantages. First, it is adaptive to the environment, hence applicable in scenarios where the number of participating mobile devices and their availability of energy resources is always changing. Second, it is energy-efficient through changes in the topology. This means it can be flexibly be combined with different routing protocols. Third, the protocol requires no changes on the hardware level. This means it can be implemented on all current phones, without any recalls or investments in hardware changes. The evaluation of the protocol in a simulated environment confirms the feasibility of creating and maintaining a self-adaptive ad-hoc communication network, consisting of multitudes of mobile devices for reliable communication in a dynamic context.

scholarly journals A look at the advanced learners' use of mobile devices for English language study: Insights from interview data

2017 ◽  
Vol 25 (2) ◽  
pp. 18
Author(s):  
Mariusz Kruk
Keyword(s):  
Learning Styles ◽  
Mobile Devices ◽  
Language Learners ◽  
English Language ◽  
Ad Hoc ◽  
Structured Interview ◽  
Advanced Learners ◽  
Personal Learning ◽  
Foreign Language Learners ◽  
The One

<p>The paper discusses the results of a study which explored advanced learners of English engagement with their mobile devices to develop learning experiences that meet their needs and goals as foreign language learners. The data were collected from 20 students by means of a semi-structured interview. The gathered data were subjected to qualitative and quantitative analysis. The results of the study demonstrated that, on the one hand, some subjects manifested heightened awareness relating to the advantageous role of mobile devices in their learning endeavors, their ability to reach for suitable tools and retrieve necessary information so as to achieve their goals, meet their needs and adjust their learning of English to their personal learning styles, and on the other, a rather intuitive and/or ad hoc use of their mobile devices in the classroom.</p>

scholarly journals Adaptive mobile visualization - the chameleon framework

2015 ◽  
Vol 12 (2) ◽  
pp. 445-464 ◽  
Author(s):  
Paulo Pombinho ◽  
Maria Carmo ◽  
Ana Afonso
Keyword(s):  
Wireless Networks ◽  
Mobile Devices ◽  
Information Visualization ◽  
High Speed ◽  
Ad Hoc ◽  
Resource Constraints ◽  
Specific Domain ◽  
User Context ◽  
Screen Space

The evolution of mobile devices and the development of high speed wireless networks have supported a widespread use of these devices with increasingly more complex applications. This reality has fostered the research in the field of information visualization in mobile devices. However, the limited screen space, resource constraints and interaction restrictions impose difficulties to developers and users of these applications. An approach to address these problems is to adapt the visualization to the user context. However, these proposals are normally designed in an ad-hoc fashion and are difficult to generalize. In addition, existing solutions are focused only in some subset of possible characteristics of the user context or only address a very specific domain and related adaptations. The objective of this paper is to present the design of a framework for adaptive mobile visualization (AMV) applications, denominated Chameleon, and the development and evaluation of prototypes that use this conceptual-based framework.

scholarly journals Selfish Caching and Facsimile Allocation over a Mobile Ad Hoc Network

2019 ◽  
Vol 8 (6S3) ◽  
pp. 1953-1958
Keyword(s):  
Mobile Devices ◽  
Ad Hoc Network ◽  
Ad Hoc ◽  
Mobile Ad Hoc Network ◽  
Peer To Peer ◽  
Selfish Nodes ◽  
Replica Allocation ◽  
Adhoc Networks ◽  
Mobile Ad Hoc ◽  
Few Vertices

Mobile adhoc networks (MANETs) have drawn attention to multitudinous consideration because of the univerality of mobile devices as well as the developments in wireless era. MANET is a peer-to-peer multi hop cellular wireless era community which does not have both difficult and speedy infrastructure and a relevant server. Every vertex of a MANET performs like a router and communicates with every unique. There exist numerous information duplication strategies which were presented to reduce the execution squalor. All are concluded that everyone cell vertices cooperate completely from the perspective of sharing their memory vicinity. But, via a few methods few vertices might additionally behave selfishly and determine simplest to cooperate in part or never with different vertices. The selfish vertices ought to then lessen the overall information approachability within the network. From this work, we try to take a look at the influence of selfish vertices in a mobile ad hoc community in terms of reproduction issuance i.e Selfish nodes are dealt with in replica allocation.

A Survey of Probabilistic Broadcast Schemes in Mobile Ad Hoc Networks

2018 ◽  
pp. 269-282
Author(s):  
Muneer Bani Yassein ◽  
Mohammed Shatnawi ◽  
Nesreen l-Qasem
Keyword(s):  
Ad Hoc Networks ◽  
Mobile Ad Hoc Networks ◽  
Mobile Devices ◽  
Routing Protocols ◽  
Ad Hoc ◽  
Probabilistic Broadcast ◽  
Mobile Ad Hoc ◽  
Broadcast Schemes ◽  
Hoc Networks ◽  
Wireless Mobile

Mobile ad hoc networks (MANETs) is a collection of wireless mobile devices that dynamically communicates with each other as a self-configuration without the need of centralized administration or fixed infrastructure. In this paper, we interested to introduce the different broadcast methods based on the probabilistic scheme which is simple implement code with speed broadcast and to reduce a storm broadcast problem effects and to alleviate redundancy through rebroadcast by using different routing protocols such as (AODV, DSR, LAR, PAR) that we interested in MANETs.

A Multi-User Ad-Hoc Resource Manager for Public Urban Areas

2012 ◽  
pp. 306-319
Author(s):  
Gonzalo Huerta-Canepa ◽  
Dongman Lee
Keyword(s):  
Mobile Devices ◽  
Urban Areas ◽  
Ad Hoc ◽  
Current System ◽  
Low Cost ◽  
Smart Spaces ◽  
Resource Manager ◽  
Technological Infrastructure ◽  
Public Resources ◽  
Social Gain

Smart spaces are defined as an environment capable of communicating with users in order to support them in achieving a goal. Previously, smart spaces were restricted to closed private areas in a well defined environment. However, factors such as the omnipresence of mobile devices, the advancement in wireless communication, and the low cost of technological infrastructure allows the creation of smart spaces everywhere. One trend that is acquiring relevance these days is to use surrounding public resources to perform tasks on behalf of mobile devices, which are resource constrained. To achieve this, systems should be able to control the access to public resources, minimize possible interference among users, and maintain the purpose of public resources untouched. This work presents a multi-user ad-hoc resource manager for smart urban areas based on previous considerations. The current system helps to avoid conflicts between users by means of a distributed scheme based on social gain for the community. The management is performed without the need of a central infrastructure. Results show that it is possible to discover and manage public resources from mobile devices while handling conflicts in a distributed manner.

A Multi-User Ad-Hoc Resource Manager for Public Urban Areas

2012 ◽  
pp. 53-71 ◽  
Author(s):  
Gonzalo Huerta-Canepa ◽  
Dongman Lee
Keyword(s):  
Mobile Devices ◽  
Urban Areas ◽  
Ad Hoc ◽  
Current System ◽  
Low Cost ◽  
Smart Spaces ◽  
Resource Manager ◽  
Technological Infrastructure ◽  
Public Resources ◽  
Social Gain

Smart spaces are defined as an environment capable of communicating with users in order to support them in achieving a goal. Previously, smart spaces were restricted to closed private areas in a well defined environment. However, factors such as the omnipresence of mobile devices, the advancement in wireless communication, and the low cost of technological infrastructure allows the creation of smart spaces everywhere. One trend that is acquiring relevance these days is to use surrounding public resources to perform tasks on behalf of mobile devices, which are resource constrained. To achieve this, systems should be able to control the access to public resources, minimize possible interference among users, and maintain the purpose of public resources untouched. This work presents a multi-user ad-hoc resource manager for smart urban areas based on previous considerations. The current system helps to avoid conflicts between users by means of a distributed scheme based on social gain for the community. The management is performed without the need of a central infrastructure. Results show that it is possible to discover and manage public resources from mobile devices while handling conflicts in a distributed manner.

scholarly journals Uses and integration of augmented reality in the educational cooperatives of Andalusia (Spain)

2020 ◽  
Vol 10 (1) ◽  
pp. 4
Author(s):  
Jesús López Belmonte ◽  
Santiago Pozo Sánchez ◽  
Arturo Fuentes Cabrera ◽  
José María Romero Rodríguez
Keyword(s):  
Augmented Reality ◽  
Mobile Devices ◽  
Information And Communication Technologies ◽  
Ad Hoc ◽  
Communication Technologies ◽  
Mobile Technologies ◽  
Quantitative Methodology ◽  
Data Collection Instrument ◽  
Information And Communication ◽  
The Impact

The use of mobile devices in classrooms is becoming more and more common. The introduction of these resources to produce learning is part of the mobile learning methodology. Among the possibilities of these devices provide we can find, as an emerging technology, augmented reality, which combines elements of the real world with virtual images. The purpose of this paper is to know the impact of the augmented reality in the educational cooperatives of Andalusia. In this regard, educational cooperatives are centers characterized in their origin by promoting the development of methodologies based on Information and Communication Technologies (ICT). The data collection instrument used in this questionnaire is a quantitative methodology of a descriptive nature. The questionnaire was prepared ad hoc according to the existing literature and the answers coded on a Likert scale. The results show that only a minority of teachers implement the augmented reality in their classes. In addition, there are statistically significant differences in terms of professional experience, so that younger teachers tend to implement methodologies based on the use of emerging mobile technologies such as augmented reality. Finally, it is emphasized that despite the constant technological advance of mobile devices in society, their application in the classroom occurs slowly.

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