| 12091. |
- Lif, Ulrika
(författare)
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"Väck upp hjärtat från döden" : Britt-Maris ritualer i Lars Ahlins Kanelbiten
- 2020
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Ingår i: Rituella rum och heliga platser. - Skellefteå : Artos & Norma bokförlag. - 9789177771517 ; , s. 217-243
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Bokkapitel (refereegranskat)abstract
- De nio delstudierna i denna bok utforskar på olika sätt hur människor skapar, använder och förhåller sig till rituella rum och heliga platser. De fyra första kapitlen har en historisk dimension. De avhandlar Lutherkyrkan i Helsingfors, som efter ett kvartssekel som restaurang och nattklubb åter blev en lokal för kyrkligt bruk 2016, kulturmötet mellan finskt och afrikanskt i Olukonda kyrka i Namibia årtiondena kring sekelskiftet 1900, mötet mellan tre väckelsegrupper i Tromsö på 1850-talet samt återbegravningen av samiska kranier i Lycksele 2019. I dag är naturen ofta ett rum för riter, helande och kontemplation. Ett av bokens kapitel undersöker människors val av plats för namngivningsceremoni, borgerlig vigsel och borgerlig begravning. Ett annat fokuserar på naturen som rituellt rum och helig plats inom den terapeutiska naturkontaktrörelsen. Ytterligare ett av de mer samtidsorienterade kapitlen rör cancerpatienters upplevelser av gudsmöten i sjukhusmiljö. De två avslutande kapitlen har litteraturvetenskaplig inriktning. Det ena handlar om rituell praktik i Lars Ahlins roman Kanelbiten, medan det andra uppmärksammar kyrkan som liturgiskt rum i Beppe Wolgers Jämtlandsdiktning.
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| 12092. |
- Liguori, Consolatina, et al.
(författare)
-
A Commentary on the Role of Noise Measurement Uncertainty in the Industrial Context
- 2021
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Ingår i: Lect. Notes Mech. Eng.. - Cham : Springer Science and Business Media Deutschland GmbH. - 9783030719555 ; , s. 324-331
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Konferensbidrag (refereegranskat)abstract
- This commentary highlights the importance of uncertainty and estimation associated with the measurement of noise levels in the industrial field. As example evaluating noise workers’ exposure in a workplace has to take into account levels of uncertainty. The authors investigated the effect of the variability of the measurand with respect to the uncertainty of the measurement and proposed a novel data-driven sampling approach which consists of three phases. Firstly, because the reliability of the noise indicators assessment depends significantly on the temporal variability of the noise, a statistic procedure is proposed to locate a corresponding minimum number of sound pressure levels necessary for having statistical significance of the initial data set. Next, a numerical algorithm finds and deletes the anomalous values (outliers) from a population of real data. Finally, the inherent variability of uncertainty of acoustic noise is calculated using the normal bootstrap method. © 2021, The Author(s), under exclusive license to Springer Nature Switzerland AG.
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| 12093. |
- Liguori, Consolatina, et al.
(författare)
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A Preliminary Study on the Estimation of the Uncertainty of Traffic Noise Measurements
- 2016
-
Ingår i: Instrumentation and Measurement Technology Conference Proceedings (I2MTC). - 9781467392204
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Konferensbidrag (refereegranskat)abstract
- The environmental acoustic noise is considered as a big risk for today's population health. Consequently, the regulations in many countries commit themselves to control the exposition of people, imposing limits to the noise level. In the comparison between the measured value and the threshold, the uncertainty of the measured value has to be taken into account. In this paper, a procedure for the evaluation of the uncertainty of traffic noise measurements due to the variability of the measurand is proposed. In particular, after possible outliers have been identified and removed, then the uncertainty is estimated on the `purified' signals by using the bootstrap-t method.
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| 12094. |
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| 12095. |
- Liguori, Consolatina, et al.
(författare)
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Choosing Bootstrap Method for the Estimation of the Uncertainty of Traffic Noise Measurements
- 2017
-
Ingår i: IEEE Transactions on Instrumentation and Measurement. - 0018-9456 .- 1557-9662. ; 66:5, s. 869-878
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Tidskriftsartikel (refereegranskat)abstract
- The environmental acoustic noise is considered as a big risk for today's population health. Consequently, the regulations in many countries commit themselves to control the exposition of people, imposing limits to the noise level. In the comparison between the measured value and the threshold, the uncertainty of the measured value has to be taken into account. In this paper, a procedure for the evaluation of the uncertainty of traffic noise measurements due to the variability of the measurand is proposed. A deep analysis of five bootstrap (normal, basic percentile, t-student, bias corrected percentile, and bias corrected and accelerated percentile) methods is performed to obtain accurate confidence intervals for the indicator Leq.Awithout necessity to make normal theory assumptions. From the comparison with the classical method (according to Guide to the Expression of Uncertainty in Measurement (ISO GUM)), the novel approach reveals to be more effective for estimating both the expected value and the uncertainty of the short-term equivalent sound pressure level when a large data set is not available.
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| 12096. |
- Liguori, Consolatina, et al.
(författare)
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Estimation of the minimum measurement time interval in acoustic noise
- 2017
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Ingår i: Applied Acoustics. - : Elsevier BV. - 0003-682X .- 1872-910X. ; 127, s. 126-132
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Tidskriftsartikel (refereegranskat)abstract
- The appropriate choice of the minimum measurement time interval is introduced for an accurate estimation of environmental noise indicators. The proposal is based on a bootstrap approach for the continuous estimation of measurement uncertainty in order to determine the statistical variability of the acquired sound pressure levels. Experimental results concerning the adoption of the proposed method regarding environmental noise from three different sources (road traffic, outdoor air conditioner fan motor and construction site) confirm the reliability of the proposal and its feasibility in evaluating the equivalent sound pressure level of an acoustic phenomenon using short-term indicators.
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| 12097. |
- Liguori, Consolatina, et al.
(författare)
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Influence of measurement time on acoustic noise uncertainty
- 2017
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Ingår i: Proceedings of the 2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC). ; , s. 1-6
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Konferensbidrag (refereegranskat)abstract
- In the paper the influence of the measurement time on the measurement uncertainty of environmental noise is explored. An original procedure based on a bootstrap method is introduced to determine the minimum measurement time, which takes into account the statistical variability of the acquired sound pressure levels. The experimental verification against real data about three different environmental noise sources shows the reliability of the algorithm for the prediction of the short-term noise indicator corresponding to longer time window.
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| 12098. |
- Liguori, Consolatina, et al.
(författare)
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Innovative bootstrap approach for the estimation of minimum measurement time interval in road traffic noise evaluation
- 2017
-
Ingår i: Measurement. - : Elsevier BV. - 0263-2241 .- 1873-412X. ; 98, s. 237-242
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Tidskriftsartikel (refereegranskat)abstract
- It is observed that in order to characterize the environmental noise in a site, during diurnal reference time (6–22h) or nocturnal reference time (22–6h), relatively at preset time window, observation period, a single value of the equivalent continuous A-weighted sound pressure level LA,eq is used. This value is determined by integrating and averaging the squared A-weighted sound pressure of fluctuating noise during the measurement time interval, in which there are representative values of acoustic event pressure levels: so it is very important accurately to select the suitable integration time. Such matter are highly relevant to the area of measuring environmental noise and this paper aims to present a statistical method, for determining the minimum measurement time interval for an accurate estimation of LAeq. The proposed algorithm, based on CPER bootstrap method, has been experimentally verified with real data obtained from road traffic noise measurement and it showed a very good stability. The methodology is suitable for upgrading the level meter firmware in order to have the real time information on the measurand uncertainty estimation and on the minimum measurement time interval.
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| 12099. |
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| 12100. |
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