PowerShake

Worgan, Paul; Knibbe, Jarrod; Fraser, Mike; Plasencia, Diego Martinez

doi:10.1145/2858036.2858569

Cited by 20 publications

(1 citation statement)

References 16 publications

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“…Here, lies an opportunity to explore ways in which wireless access or battery power (two key points of failure) might be shared across devices so that transactions can progress. Sharing battery is an area that has had some recent developments (e.g., Worgan at al. 2016), but it is also possible to envisage a system in which a single device could be utilized for both purposes (i.e., sending and receipt of funds), for example using biometrics to allow online validation of the non-owner of the device to transact or assess the validity of a transaction.…”

Section: Design Implicationsmentioning

confidence: 99%

Moneywork

Perry

Ferreira

2017

ACM Trans. Comput.-Hum. Interact.

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The emergence of various forms of digital money and innovative digital financial services allows stores of value to be created, held, moved, measured, and exchanged in novel ways. Yet the success of these new forms of transactional media is largely dependent on the ways that they are understood as useful and credible as viable forms of exchange, and on how they support the ways that their users interact around them. This article therefore examines interactional work around the use of money in making financial transactions: we call this moneywork. We report on an empirical study of the patterns of behavior of users of a mixed media (digital and analog) currency that supports mobile device payments-the Bristol Pound-exploring the impacts of its users' understanding of the systems that underlie these transactions, the technical constraints on their potential for action, their practices of use, and the social interactions that these activities lie within. We draw design implications to support these payment practices. CCS Concepts: • Human-centered computing → Empirical studies in HCI ; Empirical studies in ubiquitous and mobile computing; Empirical studies in collaborative and social computing; Ubiquitous and mobile computing systems and tools; • Applied computing → Digital cash;

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Section: Design Implicationsmentioning

confidence: 99%

Moneywork

Perry

Ferreira

2017

ACM Trans. Comput.-Hum. Interact.

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Energy-aware tree network formation among computationally weak nodes

2020

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We study the fundamental problem of distributed network formation among mobile agents of limited computational power that aim to achieve energy balance by wirelessly transmi ing and receiving energy in a peer-to-peer manner. Speci cally, we design simple distributed protocols consisting of a small number of states and interaction rules for the formation of arbitrary and k-ary tree networks. Furthermore, we evaluate (theoretically and also using computer simulations) a plethora of energy redistribution protocols that exploit di erent levels of knowledge in order to achieve desired energy distributions among the agents which require that every agent has exactly or at least twice the energy of the agents of higher depth, according to the structure of the network. Our study shows that without using any knowledge about the network structure, such energy distributions cannot be achieved in a timely manner, meaning that there might be high energy loss during the redistribution process. On the other hand, only a few extra bits of information seem to be enough to guarantee quick convergence to energy distributions that satisfy particular properties, yielding low energy loss. * A preliminary version of this paper entitled "Peer-to-peer energy-aware tree network formation" appeared in Proceedings of the 16th ACM International Symposium on Mobility Management and Wireless Access (MOBIWAC), pages 1-8, 20181-8, [Madhja et al., 2018. is full version extends the conference one in multiple ways. It contains all missing proofs of the theoretical statements and additional details on the correctness and e ciency of our methods for the lossless case. Besides presenting protocols only for the formation of arbitrary and binary tree networks, we now further present protocols for the formation of k-ary tree networks, for any integer k ≥ 2, building upon ideas used for binary trees. For such networks, we also show that it is possible to achieve particular energy distributions when there is no energy loss, by designing new protocols for these cases as well. e evaluation of our methods in the lossy case has been extended to compare the e ciency of the protocols in terms of the energy that has been lost until a stable energy distribution has been reached. Our discussion on related work, generalizations of our model and open problems has also been extended signi cantly. Moreover, many examples have been included throughout the paper to illustrate how all proposed protocols work in particular cases. We would like to thank Dimitrios Tsolovos for fruitful discussions at early stages of this work that led to the publication of the preliminary conference version of this paper. is work has been partially supported by the Greek State Scholarships Foundation (IKY), and by the Alexander S. Onassis Public Bene t Foundation.

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Encounter based energy sharing in wildlife communication systems

Iranmanesh,

Raad

2024

Sci Rep

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In this work, the concept of peer-to-peer energy sharing in wildlife communication systems is explored. In this context, wild animals can share energy wirelessly besides their data communications as they opportunistically come into range of each other. Our goal is to find a way to balance the energy among the nodes and minimize this energy loss. We propose a novel encounter-based energy-sharing scheme, called EBES, that utilizes single and multi-hop transmission to achieve energy balance, minimize energy losses, and maximize the lifetime of the wildlife communication system. EBES is based on a variety of parameters, including the amount of energy left in the system and the nodes’ encounter rate, and buffer sizes. In the simulation studies, we considered a wildlife communication network that is involved in data communication and applied EBES over the opportunistic routing protocols such as EBR, Spray&Wait, and Epidemic resulting in a network lifetime increase of 35% and improving the routing protocols performance. Additionally, we compared EBES with the other well-known energy balancing techniques that also contribute to data communication such as EA-Epidemic, EERPFAnt, and OE-OLSR and the results show the remaining energy was improved by 31%, 26%, and 15%, respectively. Supplementary Information The online version contains supplementary material available at 10.1038/s41598-024-73838-2.

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PowerShake

Cited by 20 publications

References 16 publications

Moneywork

Moneywork

Energy-aware tree network formation among computationally weak nodes

Encounter based energy sharing in wildlife communication systems

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