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Reverberation effects as observed by room microphones severely degrade the performance of automatic speech recognition systems. We investigate the use of dereverberation by spectral subtraction as proposed by Lebart and Boucher and introduce a simple approach to estimate the required decay parameter by clapping hands. Experiments on small vocabulary continuous speech recognition task on read speech show that using the calibrated dereverberation improves WER from 73.2 to 54.7 for the best microphone. In combination with system adaptation, the WER could be reduced to 28.2, which is only a 16% relative loss of performance comparison to using a headset instead of a room microphone.
This paper deals with the preparation of the Small GEO mission and the accommodation of a GPS receiver as an experiment. The expected benefits of using the GPS receiver for Small GEO are explained. The feasibility of using GPS for position determination is investigated by simulation using a MosaicGNSS receiver, which was stimulated by a Spirent RF signal generator. A procedure, how to evaluate flight data on ground is outlined. Success criteria of the experiment and the minimal size of the downlink stream required and reserved for the receiver TM are presented.
The CALO Meeting Assistant (MA) provides for distributed meeting capture, annotation, automatic transcription and semantic analysis of multiparty meetings, and is part of the larger CALO personal assistant system. This paper presents the CALO-MA architecture and its speech recognition and understanding components, which include real-time and offline speech transcription, dialog act segmentation and tagging, topic identification and segmentation, question-answer pair identification, action item recognition, decision extraction, and summarization.
Sollen Klassenräume über Fenster belüftet werden, kann dies über Stoßlüftung oder genau dosierte Dauerlüftung erfolgen. Messungen verschiedener Institutionen zeigen, dass die erforderliche regelmäßige Stoßlüftung in Schulen nicht praktiziert wird.
Damit eine Dauerlüftung aber funktionieren kann, muss ermittelt werden, welcher Fenstertyp bei welcher Öffnungsweite bei behaglichen thermischen Verhältnissen im Raum den notwendigen Luftwechsel gewährleistet. Deshalb wurden an einem Freilandversuchsstand des Fraunhofer‐Instituts für Bauphysik Schwingflügel und Kippflügel auf ihre Eignung zur Dauerlüftung in Klassenräumen untersucht.
Da sich bei den vielen Einflussfaktoren auf die freie Lüftung die deskriptive Analyse oft als sehr schwierig erweist, wird ein besonderes statistisches Verfahren, ein Entscheidungsbaumverfahren verwendet, das sowohl hinsichtlich der Auswahl der Einflussgrößen und der Modellüberanpassung sehr günstige statistischmethodische Eigenschaften besitzt.
Mit diesem Verfahren können Einflussgrößen mit unterschiedlichen Skalenniveaus adäquat in die Auswertung einbezogen werden. Dabei erhält man ein intuitiv interpretierbares Regelwerk, welches dem Anwender einen erklärenden Einblick in die Zusammenhangsstruktur des untersuchten Prozesses liefert.
Objective: The aim of the present study was to explore how contextual factors affect the everyday activities of women and men with rheumatoid arthritis (RA), as evident in their life stories.
Methods: Fifteen people with RA, who had retired early due to the disease, were interviewed up to three times, according to a narrative biographic interview style. The life stories of the participants, which were reconstructed from the biographical data and from the transcribed ‘told story’ were analysed from the perspective of contextual factors, including personal and environmental factors. The rigour and accuracy of the analysis were enhanced by reflexivity and peer‐review of the results.
Results: The life stories of the participants in this study reflected how contextual factors (such as gender, the healthcare system, the support of families and social and cultural values) shaped their everyday activities. In a society such as in Austria, which is based on traditional patriarchal values, men were presented with difficulties in developing a non‐paid‐work‐related role. For women, if paid work had to be given up, they were more likely to engage in alternative challenging activities which enabled them to develop reflective skills, which in turn contributed to a positive and enriching perspective on their life stories. Health professionals may thus use some of the women's strategies to help men.
Conclusion: Interventions by health professionals in people with RA may benefit from an approach sensitive to personal and environmental factors.
Objectives: A historical review of the editorial board and the founding editor of WORK: A Journal of Prevention, Assessment and Rehabilitation was conducted to examine the understanding of the editorship and contributions of this team to the knowledge in WORK.
Participants: The team of four authors worked together to identify an approach to evaluate the contributions and impact of WORK's editorial board (EB) on the journal's scholarship. The editor-in-chief (EIC) and editorial board members were participants in this evaluation.
Methods: Informative and formative evaluations were used to investigate how knowledge was shaped through the development of an epistemic community of scholars in the field of work. Metrics of the EB composition and participation in the journal as well as surveys and interviews with the board and the editor-in-chief were analyzed.
Results: The EB represents an international community of scholars with a common interest in work and who contribute academically both within WORK and beyond. The epistemic community that has evolved through the editorial board represents a pluralistic perspective on work that is needed to inform practice, and knowledge.
Conclusion: Future directions to continue to advance knowledge through WORK's editorial board and EIC are elaborated.
Introduction: The aim of this review was to gain an understanding of the first 20 years of contributions to WORK within the assessment domain and to reflect on the perspectives underscoring this knowledge base.
Method: A narrative review of assessment articles using the WORK ARTicle database was conducted. Assessment articles were searched using issues from 1990 to 2009. Descriptive data was analyzed to examine historical trends of the specific types and dimensions of articles, the regional location of the contributions, and the methodological accordance. A reflective process was used by an editorial board member of WORK to inductively interpret perspectives and contextual issues that underpinned the evolution of the assessment domain in WORK.
Results: Over half of N= 108 of the articles on assessment in WORK focused on establishing or reporting reliability and validity of assessments used in clinical practice or evaluation research. The majority of the assessment articles were predominantly focused on the person. Contributions of articles were from 5 regions: North America, Europe, Australia, Asia and Africa.
Conclusions: Assessment articles in WORK have contributed to the development of evidence to support assessment of the worker. These articles represent a knowledge base that emphasizes evidence-based assessments to evaluate what a person can and cannot do to participate in work. Efforts are needed to expand knowledge generation in assessment to include more evaluations on the workplace and occupation dimensions, and that also considers the worker in context.
Der Beitrag stellt das laufende Forschungsprojekt „Sexuelle Gewalt gegen Mädchen und Jungen in Institutionen“ des Deutschen Jugendinstituts vor. Inhalt ist eine quantitative retrospektive Befragung zum Vorkommen, Ausmaß und zum Umgang mit sexueller Gewalt in Schulen, Internaten sowie stationären Einrichtungen der Hilfen zur Erziehung. Anhand von Fokusgruppen soll die Perspektive der Fachkräfte und Beratungsstellen einbezogen werden.