Publications by authors named "C Spehr"

This paper presents an Expert Decision Support System for the identification of time-invariant, aeroacoustic source types. The system comprises two steps: first, acoustic properties are calculated based on spectral and spatial information. Second, clustering is performed based on these properties.

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Beamforming is an imaging tool for the investigation of aeroacoustic phenomena and results in high-dimensional data that are broken down to spectra by integrating spatial regions of interest. This paper presents two methods that enable the automated identification of aeroacoustic sources in sparse beamforming maps and the extraction of their corresponding spectra to overcome the manual definition of regions of interest. The methods are evaluated on two scaled airframe half-model wind tunnel measurements and on a generic monopole source.

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Preparing and pre-testing experimental setups for flight tests is a lengthy but necessary task. One part of this preparation is comparing newly available measurement technology with proven setups. In our case, we wanted to compare acoustic Micro-Electro-Mechanical Systems (MEMS) to large and proven surface-mounted condenser microphones.

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Introduction: Inequality between age groups has been demonstrated in the prescription of biologics, yet systematic real-world data about age-related differences in psoriasis care are missing.

Objective: To investigate disparities in psoriasis characteristics by age groups and to identify potential impact on psoriasis health care.

Patients And Methods: Data analysis included 3615 patients from the German psoriasis registry PsoBest, which observes adult patients with moderate-to-severe psoriasis or psoriatic arthritis (PsA) on systemic treatment over a time period of 10 years.

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Background: The Swiss psoriasis registry SDNTT (Swiss Dermatology Network for Targeted Therapies) records the long-term safety and effectiveness of systemic treatment regimens for psoriasis.

Patients And Methods: Patients with moderate to severe psoriasis are included in the SDNTT when treatment with a conventional systemic agent or biologic is initiated that was not previously used by the respective patient. Patients are followed over a 5-year period.

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