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| http://dx.doi.org/10.1155/2009/946012 | DOI Listing |
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Unsupervised segmentation of heart sounds from abrupt changes detection.
Comput Biol Med
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Univ. Grenoble Alpes, CNRS, CHU Grenoble Alpes, Grenoble INP, TIMC-IMAG, La Tronche, France.
Background And Objective: Heart auscultation enables early diagnosis of cardiovascular diseases. Automated segmentation of cardiograms into fundamental heart states can guide physicians to analyze the patient's condition more effectively. In this work, we propose an unsupervised method of segmentation into heart sounds and silences based on the detection of abrupt changes in the signal.
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Technical University of Darmstadt, Institute of Psychology.
The goal of the present investigation was to perform a registered replication of Jones and Macken's (1995b) study, which showed that the segregation of a sequence of sounds to distinct locations reduced the disruptive effect on serial recall. Thereby, it postulated an intriguing connection between auditory stream segregation and the cognitive mechanisms underlying the irrelevant speech effect. Specifically, it was found that a sequence of changing utterances was less disruptive in stereophonic presentation, allowing each auditory object (letters) to be allocated to a unique location (right ear, left ear, center), compared to when the same sounds were played monophonically.
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Ballistics laboratory, National Institute for Criminalistics and Criminology, Vilvoordsesteenweg 98, Brussels 1120, Belgium. Electronic address:
Since the release of the first 3D-printed firearm, "The Liberator," the occurrence of 3D-printed firearms in criminal activities has increased, highlighting the need for forensic research on these weapons. This study presents a technical examination of a 3D-printed firearm received by the National Institute of Criminalistics and Criminology (NICC), focusing on its design, ballistic performance, and its potential for microscopic comparative analysis. The firearm, resembling a 3D-printed pistol Yeet22, is primarily constructed from polymer parts, with the exception of the firing pin, barrel, and various springs and screws.
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