Private Pooling: A Privacy-Preserving Approach for Mobile Collaborative Sensing

Wiesner, Kevin; Durr, Michael; Duchon, Markus

doi:10.1007/978-3-642-30244-2_5

Cited by 3 publications

(2 citation statements)

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“…shown to be a potent Brønsted acid. [34] The parent Lewis acid Al(OTeF 5 ) 3 has a calculated FIA [35] of 590 kJ mol -1 [cf. 587 kJ mol -1 for monomeric Al(OC 5 F 4 N) 3 The solid-state structure of 8 is polymeric and shows a fivecoordinate aluminum center and two different sodium cation environments.…”

Section: Manifestations Of Very High Lewis Aciditymentioning

confidence: 99%

Towards Weakly Coordinating Anions with the Extremely Electron Withdrawing Perfluoropyridinoxy Ligand –OC₅F₄N

et al. 2018

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The extreme electron withdrawing properties of the perfluoropyridinoxy ligand –OC5F4N were used for the preparation of new (weakly) coordinating borate and aluminate anions of the type [E(OC5F4N)4]– (E = B or Al). These new anions are based on the potent parent Lewis acids E(OC5F4N)3, which possess exceptionally high calculated fluoride ion affinities (FIAs) of 500 and 587 kJ mol–1 for E = B and Al respectively. For aluminum, this extreme Lewis acidity dominates the chemistry and from mixtures of the neutral polymeric Lewis acid [Al(OC5F4N)3]n, the five‐ and six‐coordinate complexes Al(OC5F4N)3(OEt2)2 (1) and [Al(OC5F4N)2(µ‐OC5F4N) (NCMe)2]2 (2) were crystallized upon addition of ether or MeCN. The aluminate salts M[Al(OC5F4N)4] (M = Li or K) were prepared from the reaction between the alcohol 4‐HO–C5F4N and either LiAlH4 or K[AlEt4] respectively. The aluminate anion [Al(OC5F4N)4]– remains Lewis acidic coordinating small donor molecules forming [Al(OC5F4N)4(L)]– (L = THF or NMe3) and even supports formation and structural characterisation of the aluminum dianion containing salt [Na(OEt2)2][Na][Al(OC5F4N)5] (8). The from NaBH4 and 4‐HO–C5F4N accessible borate salt Na[B(OC5F4N)4] shows increased kinetic stability in comparison to the aluminum analogue.

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Section: Manifestations Of Very High Lewis Aciditymentioning

confidence: 99%

Towards Weakly Coordinating Anions with the Extremely Electron Withdrawing Perfluoropyridinoxy Ligand –OC₅F₄N

et al. 2018

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“…Even though PSNs are related to wireless sensor networks (WSN), there are significant differences between those two types of sensor networks (cf. [6]). The main advantage of PSNs is that data can be collected on a large scale with per se deployed and virtually always-on, consumer-paid and continuously recharged sensor nodes.…”

Section: Introductionmentioning

confidence: 93%

Right to silence: Establishing map-based Silent Zones for participatory sensing

Wiesner

Feld

Dorfmeister

et al. 2014

2014 IEEE Ninth International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP)

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Participatory sensing tries to create cost-effective, large-scale sensing systems by leveraging sensors embedded in mobile devices. One major challenge in these systems is to protect the users' privacy, since users will not contribute data if their privacy is jeopardized. Especially location data needs to be protected if it is likely to reveal information about the users' identities. A common solution is the blinding out approach that creates so-called ban zones in which location data is not published. Thereby, a user's important places, e.g., her home or workplace, can be concealed. However, ban zones of a fixed size are not able to guarantee any particular level of privacy. For instance, a ban zone that is large enough to conceal a user's home in a large city might be too small in a less populated area. For this reason, we propose an approach for dynamic map-based blinding out: The boundaries of our privacy zones, called Silent Zones, are determined in such way that at least k buildings are located within this zone. Thus, our approach adapts to the habitat density and we can guarantee k-anonymity in terms of surrounding buildings. In this paper, we present two new algorithms for creating Silent Zones and evaluate their performance. Our results show that especially in worst case scenarios, i.e., in sparsely populated areas, our approach outperforms standard ban zones and guarantees the specified privacy level.

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Technologische Herausforderungen für kontextsensitive Geschäftsanwendungen

et al. 2011

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Private Pooling: A Privacy-Preserving Approach for Mobile Collaborative Sensing

Cited by 3 publications

References 10 publications

Towards Weakly Coordinating Anions with the Extremely Electron Withdrawing Perfluoropyridinoxy Ligand –OC₅F₄N

Towards Weakly Coordinating Anions with the Extremely Electron Withdrawing Perfluoropyridinoxy Ligand –OC₅F₄N

Right to silence: Establishing map-based Silent Zones for participatory sensing

Technologische Herausforderungen für kontextsensitive Geschäftsanwendungen

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Private Pooling: A Privacy-Preserving Approach for Mobile Collaborative Sensing

Cited by 3 publications

References 10 publications

Towards Weakly Coordinating Anions with the Extremely Electron Withdrawing Perfluoropyridinoxy Ligand –OC5F4N

Towards Weakly Coordinating Anions with the Extremely Electron Withdrawing Perfluoropyridinoxy Ligand –OC5F4N

Right to silence: Establishing map-based Silent Zones for participatory sensing

Technologische Herausforderungen für kontextsensitive Geschäftsanwendungen

Contact Info

Product

Resources

About

Towards Weakly Coordinating Anions with the Extremely Electron Withdrawing Perfluoropyridinoxy Ligand –OC₅F₄N

Towards Weakly Coordinating Anions with the Extremely Electron Withdrawing Perfluoropyridinoxy Ligand –OC₅F₄N