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On the optimal placement of mix zones

by Julien Freudiger, Reza Shokri, Jean-pierre Hubaux - in Privacy Enhancing Technologies, 2009
"... Abstract. In mobile wireless networks, third parties can track the location of mobile nodes by monitoring the pseudonyms used for identification. A frequently proposed solution to protect the location privacy of mobile nodes suggests changing pseudonyms in regions called mix zones. In this paper, we ..."
Abstract - Cited by 37 (17 self) - Add to MetaCart
, we propose a novel metric based on the mobility profiles of mobile nodes in order to evaluate the mixing effectiveness of possible mix zone locations. Then, as the location privacy achieved with mix zones depends on their placement in the network, we analyze the optimal placement of mix zones

Blind separation of speech mixtures via time-frequency masking

by Özgür Yılmaz, Scott Rickard - IEEE TRANSACTIONS ON SIGNAL PROCESSING (2002) SUBMITTED , 2004
"... Binary time-frequency masks are powerful tools for the separation of sources from a single mixture. Perfect demixing via binary time-frequency masks is possible provided the time-frequency representations of the sources do not overlap: a condition we call-disjoint orthogonality. We introduce here t ..."
Abstract - Cited by 322 (5 self) - Add to MetaCart
-dimensional (2-D) histogram constructed from the ratio of the time-frequency representations of the mixtures that is shown to have one peak for each source with peak location corresponding to the relative attenuation and delay mixing parameters. The histogram is used to create time-frequency masks that partition

Mix Zones: User Privacy in Location-aware Services

by Alastair R. Beresford, Frank Stajano - In Proc. of the 2nd IEEE Annual Conference on Pervasive Computing and Communications Workshops (PERCOMW04 , 2004
"... Privacy of personal location information is becoming an increasingly important issue. This paper refines a method, called the mix zone, developed to enhance user privacy in location-based services. We improve the mathematical model, examine and minimise computational complexity and develop a method ..."
Abstract - Cited by 115 (1 self) - Add to MetaCart
Privacy of personal location information is becoming an increasingly important issue. This paper refines a method, called the mix zone, developed to enhance user privacy in location-based services. We improve the mathematical model, examine and minimise computational complexity and develop a method

Location Privacy with Road network Mix-zones

by Balaji Palanisamy, Ling Liu, Kisung Lee, Aameek Singh, Yuzhe Tang
"... Abstract — Mix-zones are recognized as an alternative and complementary approach to spatial cloaking based approach to location privacy protection. Mix-zones break the continuity of location exposure by ensuring that users ’ movements cannot be traced while they reside in a mix-zone. In this paper w ..."
Abstract - Cited by 1 (1 self) - Add to MetaCart
Abstract — Mix-zones are recognized as an alternative and complementary approach to spatial cloaking based approach to location privacy protection. Mix-zones break the continuity of location exposure by ensuring that users ’ movements cannot be traced while they reside in a mix-zone. In this paper

Mix-Zones for Location Privacy in Vehicular Networks

by unknown authors
"... Vehicular Networks (VNs) seek to provide, among other applications, safer driving conditions. To do so, vehicles need to periodically broadcast safety messages providing precise position information to nearby vehicles. However, this frequent messaging (e.g., every 100 to 300ms per car) greatly facil ..."
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with the use of cryptography, and study analytically how the combination of mix-zones into mix-networks brings forth location privacy in VNs. Finally, we show by simulations that the proposed mix system is effective in various scenarios. 1.

Mobimix: Protecting location privacy with mix-zones over road networks.

by Balaji Palanisamy , Ling Liu - In ICDE 2011 , 2011
"... Abstract-This paper presents MobiMix, a road network based mix-zone framework to protect location privacy of mobile users traveling on road networks. In contrast to spatial cloaking based location privacy protection, the approach in MobiMix is to break the continuity of location exposure by using m ..."
Abstract - Cited by 21 (3 self) - Add to MetaCart
Abstract-This paper presents MobiMix, a road network based mix-zone framework to protect location privacy of mobile users traveling on road networks. In contrast to spatial cloaking based location privacy protection, the approach in MobiMix is to break the continuity of location exposure by using

Mix-Zone Model

by P. Babu
"... Abstract: The ubiquity of the various cheap embedded sensors on mobile devices, for example cameras, microphones, accelerometers, and so on, is enabling the emergence of participatory sensing applications. While participatory sensing can benefit the individuals and communities greatly, the collectio ..."
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-temporal history information will reveal participators ’ whereabouts and the relevant personal privacy. In this paper, we propose a trajectory privacy-preserving framework, named TRPF, for participatory sensing. Based on the framework, we improve the theoretical mix-zones model with considering the time factor

Traffic-Aware Multiple Mix Zone Placement for Protecting Location Privacy

by Xinxin Liu, Han Zhao, Miao Pan, Hao Yue, Xiaolin Li, Yuguang Fang
"... Abstract—Privacy protection is of critical concern to Location-Based Service (LBS) users in mobile networks. Long-term pseudonyms, although appear to be anonymous, in fact em-power third-party service providers to continuously track users’ movements. Researchers have proposed the mix zone model to a ..."
Abstract - Cited by 4 (1 self) - Add to MetaCart
Abstract—Privacy protection is of critical concern to Location-Based Service (LBS) users in mobile networks. Long-term pseudonyms, although appear to be anonymous, in fact em-power third-party service providers to continuously track users’ movements. Researchers have proposed the mix zone model

Road Network Mix-zones for Anonymous Location Based Services

by Balaji Palanisamy , Sindhuja Ravichandran , Ling Liu , Binh Han , Kisung Lee , Calton Pu
"... Abstract-We present MobiMix, a road network based mix-zone framework to protect location privacy of mobile users traveling on road networks. An alternative and complementary approach to spatial cloaking based location privacy protection is to break the continuity of location exposure by introducing ..."
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Abstract-We present MobiMix, a road network based mix-zone framework to protect location privacy of mobile users traveling on road networks. An alternative and complementary approach to spatial cloaking based location privacy protection is to break the continuity of location exposure

Neurogenesis in the dentate gyrus of the adult tree shrew is regulated by psychosocial stress and NMDA receptor activation

by Elizabeth Gould, Bruce S. Mcewen, Patima Tanapat, Liisa A. M. Galea, Eberhard Fuchs - J Neurosci
"... These studies were designed to determine whether adult neurogenesis occurs in the dentate gyrus of the tree shrew, an animal phylogenetically between insectivores and primates, and to explore the possibility that this process is regulated by stressful experiences and NMDA receptor activation. We per ..."
Abstract - Cited by 132 (8 self) - Add to MetaCart
that incorporated BrdU in the dentate gyrus of adult tree shrews were primarily located in the subgranular zone, had morphological characteristics of granule neuron precursors, and appeared to divide within 24 hr after BrdU injection. Three weeks after BrdU injection, BrdU-labeled cells had neuronal morphology
Results 1 - 10 of 2,127