Zusammenfassung Die Arbeit mit Schutzzielen hat sich grunds?tzlich bew?hrt. Sie sind so formuliert, dass sie die Anforderungen an technische
und organisatorische Systeme sowohl abstrakt überblickbar als auch in Form von Ma?nahmen hinreichend konkret fa?bar machen.
Der Beitrag empfiehlt, sie in Datenschutzgesetze und Vertr?ge aufzunehmen, als Leitlinien für den Entwurf und Betrieb von
IT-Infrastrukturen heranzuziehen und in Mechanismen transformiert als WebService-Policies auszudrücken — und unterbreitet
einen Strukturierungsvorschlag. 相似文献
As more interactive surfaces enter public life, casual interactions from passersby are bound to increase. Most of these users
can be expected to carry a mobile phone or PDA, which nowadays offers significant computing capabilities of its own. This
offers new possibilities for interaction between these users’ private displays and large public ones. In this paper, we present
a system that supports such casual interactions. We first explore a method to track mobile phones that are placed on a horizontal
interactive surface by examining the shadows which are cast on the surface. This approach detects the presence of a mobile
device, as opposed to any other opaque object, through the signal strength emitted by the built-in Bluetooth transceiver without
requiring any modifications to the devices’ software or hardware. We then go on to investigate interaction between a Sudoku
game running in parallel on the public display and on mobile devices carried by passing users. Mobile users can join a running
game by placing their devices on a designated area. The only requirement is that the device is in discoverable Bluetooth mode.
After a specific device has been recognized, a client software is sent to the device which then enables the user to interact
with the running game. Finally, we explore the results of a study which we conducted to determine the effectiveness and intrusiveness
of interactions between users on the tabletop and users with mobile devices. 相似文献
An instrument to measure dynamic adhesive forces between interacting rough surfaces has been developed. It consists of four parts, namely, main instrument body, vertical positioning system with both micrometer and nanometer positioning accuracies, horizontal positioning system with nanometer positioning accuracy, and custom-built high-resolution, and high dynamic bandwidth capacitive force transducer. The vertical piezoelectric actuator (PZT) controls the vertical (approaching and retracting) motion of the upper specimen, while the horizontal PZT controls the horizontal (reciprocal) motion of the lower specimen. The force transducer is placed in line with the upper specimen and vertical PZT, and directly measures the adhesive forces with a root-mean-square load resolution of 1.7 microN and a dynamic bandwidth of 1.7 kHz. The newly developed instrument enables reliable measurements of near-contact and contact adhesive forces for microscale devices under different dynamic conditions. Using the developed instrument, dynamic pull-in and pull-off force measurements were performed between an aluminum-titanium-carbide sphere and a 10 nm thick carbon film disk sample. Three different levels of contact force were investigated; where for each contact force level the vertical velocity of the upper sample was varied from 0.074 to 5.922 microms, while the lower sample was stationary. It was found that slower approaching and retracting velocities result in higher pull-in and pull-off forces. The noncontact attractive force was also measured during horizontal movement of the lower sample, and it was found that the periodic movements of the lower disk sample also affect the noncontact surface interactions. 相似文献
In this paper we discuss the potentials of a new Bayesian inference tool, called the Gibbs sampler, for the analysis of the censored regression or Tobit model. Tobit models have a wide range of applications in empirical sciences, like econometrics and biometrics. The estimation results of the simple Tobit model will be compared to a hierarchical Tobit model, and the Gibbs sampling approach to the related classical algorithm of expectation-maximisation (EM). The underlying botanical example of this paper is concerned with the censoring mechanism in plant reproduction and proposes the Bayesian Tobit model for the growth relationship between the reproductive part and the rest of the plant. 相似文献
In this work we examine the influence of the diffusive motion of vortices in highly anisotropic high-Tc superconductors near the Berezinskii-Kosterlitz-Thouless (BKT) transition temperature T
bkt
on the spin-lattice relaxation rate T
1–1
.We find a jump in T1–1at the temperature T
bkt
. 相似文献
Universal Access in the Information Society - Pervasive technologies such as Artificial Intelligence, Virtual Reality and the Internet of Things, despite their great potential for improved... 相似文献
We introduce a novel algorithm for online estimation of Acoustic Impulse Responses (AIRs) which allows for fast convergence by exploiting prior knowledge about the fundamental structure of AIRs. The proposed method assumes that the variability of AIRs of an acoustic scene is confined to a low-dimensional manifold which is embedded in a high-dimensional space of possible AIR estimates. We discuss various approaches which exploit a training data set of AIRs, e.g., high-accuracy AIR estimates from the acoustic scene, to learn a local affine subspace approximation of the AIR manifold. The model is motivated by the idea of describing the generally nonlinear AIR manifold locally by tangential hyperplanes and its validity is verified for simulated data. Subsequently, we describe how the manifold assumption can be used to enhance online AIR estimates by projecting them onto an adaptively estimated subspace. Motivated by the assumption of manifolds being locally Euclidean, the parameters determining the adaptive subspace are learned from the nearest neighbor AIR training samples to the current AIR estimate. To assess the proximity of training data AIRs to the current AIR estimate, we introduce a probabilistic extension of the Euclidean distance which improves the performance for applications with non-white excitation signals. Furthermore, we describe how model imperfections can be tackled by a soft projection of the AIR estimates. The proposed algorithm exhibits significantly faster convergence properties in comparison to a high-performance state-of-the-art algorithm. Furthermore, we show an improved steady-state performance for speech-excited system identification scenarios suffering from high-level interfering noise and nonunique solutions.
Journal of Intelligent Manufacturing - Remanufacturing includes disassembly and reassembly of used products to save natural resources and reduce emissions. While assembly is widely understood in... 相似文献
The diffusion coefficient \(D_{{{\text{O}}_{2} }}\), the porosity and the pore structure of mortars produced with a Portland cement and a range of blended cements containing limestone powder, microsilica, portlandite or slag were measured in the non-carbonated and the carbonated state. Additionally, the setup for measuring O2 diffusion was adapted to measure also the CO2 diffusion of the carbonated mortars. The diffusion coefficient \(D_{{{\text{O}}_{2} }}\) and the total porosity were increased in the mortars containing microsilica and slag, while they were decreased in the other mortars due to carbonation. Invariably, the pore structure became coarser in all samples. The relationship between diffusion coefficients \(D_{{{\text{O}}_{2} }}\) and \(D_{{{\text{CO}}_{2} }}\) in the carbonated mortars was always linear, with \(D_{{{\text{O}}_{2} }}\) systematically higher by factor of 1.37. As this factor broadly agrees with what was found in the scant literature about CO2 diffusion, it could be used for estimating \(D_{{{\text{CO}}_{2} }}\) of carbonated mortar and concrete based on measurements of O2 diffusion. 相似文献