1,721,574 research outputs found
Determining our peculiar velocity from the aberration in the cosmic microwave background
No full textABSTRACT The motion of our Solar system relative to the cosmic microwave background (CMB) rest frame leads to subtle distortions in the observed CMB sky map due to the aberration effect. Usually the corresponding peculiar velocity is determined from the CMB dipole but neglecting intrinsic dipole contributions. Here, it is investigated whether certain invariant scalar measures, which are derived from first and second order covariant derivatives on the sphere, can detect the distortions caused by the aberration effect at high multipoles. This would in principle allow to disentangle the Doppler from intrinsic dipole contributions providing an independent method for the determination of our peculiar velocity. It is found that the eigenvalues of the Hessian matrix of the temperature field are well suited for that task
"Alexa, How Do You Protect My Privacy?” A Quantitative Study of User Preferences and Requirements about Smart Speaker Privacy Settings
No full textAPRIM
No full textMost online services require the creation of a user account and the disclosure of personal data, such as addresses or phone numbers. With the multiplication of these services, the digital footprint left by the users rapidly grows. In order to increase the users’ awareness and support them in the management of these data, we propose a new account and personal information manager called APRIM. Our solution logs disclosed personal information and presents it to the users in the form of a matrix. We have designed and implemented a proof-of-concept and evaluated the concepts and the usability of APRIM by means of a user study involving 18 participants. The results confirm that APRIM i
Application and Utilization of Privacy Indicators and Control Interactions for Smart Watches in an Employee Context
No full textExpert Strategies to Assist Laypeople in Making Decisions and Adopting Privacy-Enhancing Technologies
No full textCan I Help You Setting Your Privacy? A Survey-based Exploration of Users' Attitudes towards Privacy Suggestions
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