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  1. Book ; Online: A review of mass concentrations of Bramblings Fringilla montifringilla

    Svensson, Tomas

    implications for assessment of large numbers of birds

    2020  

    Abstract: Mass concentrations of birds, or lack of such, is a phenomenon of great ecological and domestic significance. Apart from being and indicator for e.g. food availability, ecological change and population size, it is also a source of conflict between humans ...

    Abstract Mass concentrations of birds, or lack of such, is a phenomenon of great ecological and domestic significance. Apart from being and indicator for e.g. food availability, ecological change and population size, it is also a source of conflict between humans and birds. Moreover, massive gatherings or colonies of birds also get the attention of the public -- either as a spectacular phenomenon or as an unwelcome pest -- thereby forming the public perception of birds and their abundance. In the context of the mass concentration of bramblings (Fringilla montifringilla) in Sweden the winter 2019-2020, this work reviews the literature on this striking phenomenon. Winter roosts are found to amount to on the order of one million birds per hectare of roost area, but the spread between reports is significant. Support for roosts of up to around 15 million birds was found, but much larger numbers are frequently recited in the literature. It is argued that these larger numbers are the result of overestimation or, in some cases, even completely unfounded (potentially typos). While the difficulties related to the count of large numbers of birds can explain this state, it is unfortunate that "high numbers" sometimes displace proper numbers. Since incorrect data, and its persistence, may result in that incorrect conclusions are drawn from new observations, this matter deserves attention. As the Brambling is a well-studied species, the matter also raises concerns regarding numbers for mass concentrations of other species. It is recommended that very large numbers of birds should be recited and used with care: underlying data and methods of the original sources should be scrutinized. Analogously, reporters of large numbers of birds are advised to describe and document counting methods. In particular, number estimates based on flock volume and bird density should be avoided.

    Comment: Typo corrections and minor clarifications based on feedback from readers
    Keywords Quantitative Biology - Quantitative Methods ; Quantitative Biology - Populations and Evolution
    Subject code 590 ; 333
    Publishing date 2020-10-16
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Benefits of adhering to sleep duration recommendations: Reframing an enduring issue.

    Chee, Michael Wl / Svensson, Thomas

    Sleep medicine

    2022  Volume 101, Page(s) 373–374

    MeSH term(s) Humans ; Sleep Duration ; Sleep
    Language English
    Publishing date 2022-11-28
    Publishing country Netherlands
    Document type Editorial ; Research Support, Non-U.S. Gov't
    ZDB-ID 2012041-2
    ISSN 1878-5506 ; 1389-9457
    ISSN (online) 1878-5506
    ISSN 1389-9457
    DOI 10.1016/j.sleep.2022.11.024
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 5315: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)
    Zs.MO 635: Show issues

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  3. Book: On the notion of mental illness

    Svensson, Tommy

    problematizing the medical-model conception of certain abnormal behaviour and mental afflictions

    (Avebury series in philosophy)

    1995  

    Author's details Tommy Svensson
    Series title Avebury series in philosophy
    Keywords Mental Disorders ; Philosophy, Medical ; Psychological Theory ; Psychiatrie ; Philosophie
    Subject Philosophieren ; Seelenheilkunde
    Language English
    Size VII, 142 S.
    Publisher Avebury
    Publishing place Aldershot u.a.
    Publishing country Great Britain
    Document type Book
    HBZ-ID HT007222269
    ISBN 1-85972-160-5 ; 978-1-85972-160-5
    Database Catalogue ZB MED Medicine, Health

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    Shelf markLoan statusLocation
    1996 A 3524 order for loan Magazin

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  4. Article ; Online: Response to comment on "Validity and reliability of the Oura Ring Generation 3 (Gen3) with Oura Sleep Staging Algorithm 2.0 (OSSA 2.0) when compared to multi-night ambulatory polysomnography: A validation study of 96 participants and 421,045 epochs".

    Svensson, Thomas / Madhawa, Kaushalya / Nt, Hoang / Chung, Ung-Il / Svensson, Akiko Kishi

    Sleep medicine

    2024  Volume 117, Page(s) 217–218

    MeSH term(s) Humans ; Polysomnography ; Reproducibility of Results ; Sleep/physiology ; Algorithms
    Language English
    Publishing date 2024-03-14
    Publishing country Netherlands
    Document type Letter
    ZDB-ID 2012041-2
    ISSN 1878-5506 ; 1389-9457
    ISSN (online) 1878-5506
    ISSN 1389-9457
    DOI 10.1016/j.sleep.2024.03.014
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    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)
    Zs.MO 635: Show issues

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  5. Article ; Online: Validity and reliability of the Oura Ring Generation 3 (Gen3) with Oura sleep staging algorithm 2.0 (OSSA 2.0) when compared to multi-night ambulatory polysomnography: A validation study of 96 participants and 421,045 epochs.

    Svensson, Thomas / Madhawa, Kaushalya / Nt, Hoang / Chung, Ung-Il / Svensson, Akiko Kishi

    Sleep medicine

    2024  Volume 115, Page(s) 251–263

    Abstract: Purpose: To evaluate the validity and the reliability of the Oura Ring Generation 3 (Gen3) with Oura Sleep Staging Algorithm 2.0 (OSSA 2.0) through multi-night polysomnography (PSG).: Participants and methods: Participants were 96 generally healthy ... ...

    Abstract Purpose: To evaluate the validity and the reliability of the Oura Ring Generation 3 (Gen3) with Oura Sleep Staging Algorithm 2.0 (OSSA 2.0) through multi-night polysomnography (PSG).
    Participants and methods: Participants were 96 generally healthy Japanese men and women aged between 20 and 70 years contributing with 421,045 30-s epochs. Sleep scoring was performed according to American Academy of Sleep Medicine criteria. Each participant could contribute with a maximum of three polysomnography (PSG) nights. Within-participant means were created for each sleep measure and paired t-tests were used to compare equivalent measures obtained from the PSG and Oura Rings (non-dominant and dominant hand). Agreement between sleep measures were assessed using Bland-Altman plots. Interrater reliability for epoch accuracy was determined by prevalence-adjusted and bias-adjusted kappa (PABAK).
    Results: The Oura Ring did not significantly differ from PSG for the measures time in bed, total sleep time, sleep onset latency, sleep period time, wake after sleep onset, time spent in light sleep, and time spent in deep sleep. Oura Rings worn on the non-dominant- and dominant-hand underestimated sleep efficiency by 1.1 %-1.5 % and time spent in REM sleep by 4.1-5.6 min. The Oura Ring had a sensitivity of 94.4 %-94.5 %, specificity of 73.0 %-74.6 %, a predictive value for sleep of 95.9 %-96.1 %, a predictive value for wake of 66.6 %-67.0 %, and accuracy of 91.7 %-91.8 %. PABAK was 0.83-0.84 and reliability was 94.8 %. Sleep staging accuracy ranged between 75.5 % (light sleep) and 90.6 % (REM sleep).
    Conclusions: The Oura Ring Gen3 with OSSA 2.0 shows good agreement with PSG for global sleep measures and time spent in light and deep sleep.
    MeSH term(s) Male ; Humans ; Female ; Young Adult ; Adult ; Middle Aged ; Aged ; Polysomnography ; Actigraphy ; Reproducibility of Results ; Sleep ; Algorithms
    Language English
    Publishing date 2024-01-26
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2012041-2
    ISSN 1878-5506 ; 1389-9457
    ISSN (online) 1878-5506
    ISSN 1389-9457
    DOI 10.1016/j.sleep.2024.01.020
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 5315: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)
    Zs.MO 635: Show issues

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  6. Article: A Disentangled VAE-BiLSTM Model for Heart Rate Anomaly Detection.

    Staffini, Alessio / Svensson, Thomas / Chung, Ung-Il / Svensson, Akiko Kishi

    Bioengineering (Basel, Switzerland)

    2023  Volume 10, Issue 6

    Abstract: Cardiovascular diseases (CVDs) remain a leading cause of death globally. According to the American Heart Association, approximately 19.1 million deaths were attributed to CVDs in 2020, in particular, ischemic heart disease and stroke. Several known risk ... ...

    Abstract Cardiovascular diseases (CVDs) remain a leading cause of death globally. According to the American Heart Association, approximately 19.1 million deaths were attributed to CVDs in 2020, in particular, ischemic heart disease and stroke. Several known risk factors for CVDs include smoking, alcohol consumption, lack of regular physical activity, and diabetes. The last decade has been characterized by widespread diffusion in the use of wristband-style wearable devices which can monitor and collect heart rate data, among other information. Wearable devices allow the analysis and interpretation of physiological and activity data obtained from the wearer and can therefore be used to monitor and prevent potential CVDs. However, these data are often provided in a manner that does not allow the general user to immediately comprehend possible health risks, and often require further analytics to draw meaningful conclusions. In this paper, we propose a disentangled variational autoencoder (
    Language English
    Publishing date 2023-06-03
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2746191-9
    ISSN 2306-5354
    ISSN 2306-5354
    DOI 10.3390/bioengineering10060683
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  7. Article ; Online: Chlorine Distribution in Soil and Vegetation in Boreal Habitats along a Moisture Gradient from Upland Forest to Lake Margin Wetlands.

    Svensson, Teresia / Löfgren, Anders / Saetre, Peter / Kautsky, Ulrik / Bastviken, David

    Environmental science & technology

    2023  Volume 57, Issue 30, Page(s) 11067–11074

    Abstract: The assumed dominance of chloride ( ... ...

    Abstract The assumed dominance of chloride (Cl
    MeSH term(s) Ecosystem ; Soil ; Chlorine/analysis ; Wetlands ; Chlorides ; Forests ; Plants
    Chemical Substances Soil ; Chlorine (4R7X1O2820) ; Chlorides
    Language English
    Publishing date 2023-07-20
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1520-5851
    ISSN (online) 1520-5851
    DOI 10.1021/acs.est.2c09571
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  8. Article ; Online: Association between Metabolic Syndrome Status and Daily Physical Activity Measured by a Wearable Device in Japanese Office Workers.

    Yamaga, Yukako / Svensson, Thomas / Chung, Ung-Il / Svensson, Akiko Kishi

    International journal of environmental research and public health

    2023  Volume 20, Issue 5

    Abstract: 1) Background: This study examined the cross-sectional association between metabolic syndrome (MetS) status classified into three groups and daily physical activity (PA; step count and active minutes) using a wearable device in Japanese office workers. ( ...

    Abstract (1) Background: This study examined the cross-sectional association between metabolic syndrome (MetS) status classified into three groups and daily physical activity (PA; step count and active minutes) using a wearable device in Japanese office workers. (2) Methods: This secondary analysis used data from 179 participants in the intervention group of a randomized controlled trial for 3 months. Individuals who had received an annual health check-up and had MetS or were at a high risk of MetS based on Japanese guidelines were asked to use a wearable device and answer questionnaires regarding their daily life for the entire study period. Multilevel mixed-effects logistic regression models adjusted for covariates associated with MetS and PA were used to estimate associations. A sensitivity analysis investigated the associations between MetS status and PA level according to the day of the week. (3) Results: Compared to those with no MetS, those with MetS were not significantly associated with PA, while those with pre-MetS were inversely associated with PA [step count Model 3: OR = 0.60; 95% CI: 0.36, 0.99; active minutes Model 3: OR = 0.62; 95% CI: 0.40, 0.96]. In the sensitivity analysis, day of the week was an effect modifier for both PA (
    MeSH term(s) Humans ; Cross-Sectional Studies ; East Asian People ; Exercise ; Metabolic Syndrome/epidemiology ; Wearable Electronic Devices
    Language English
    Publishing date 2023-02-28
    Publishing country Switzerland
    Document type Randomized Controlled Trial ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2175195-X
    ISSN 1660-4601 ; 1661-7827
    ISSN (online) 1660-4601
    ISSN 1661-7827
    DOI 10.3390/ijerph20054315
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  9. Book ; Online: Near-Far Field Channel Modeling for Holographic MIMO Using Expectation-Maximization Methods

    Chen, Houfeng / Zeng, Shuhao / Guo, Hao / Svensson, Tommy / Zhang, Hongliang

    2024  

    Abstract: Holographic Multiple-Input Multiple-Output (HMIMO), which densely integrates numerous antennas into a limited space, is anticipated to provide higher rates for future 6G wireless communications. The increase in antenna aperture size makes the near-field ... ...

    Abstract Holographic Multiple-Input Multiple-Output (HMIMO), which densely integrates numerous antennas into a limited space, is anticipated to provide higher rates for future 6G wireless communications. The increase in antenna aperture size makes the near-field region enlarge, causing some users to be located in the near-field region. Thus, we are facing a hybrid near-field and far-field communication problem, where conventional far-field modeling methods may not work well. In this paper, we propose a near-far field channel model that does not presuppose whether each path is near-field or far-field, different from the existing work requiring the ratio of the number of near-field paths to that of far-field paths as prior knowledge. However, this gives rise to a new challenge for accurately modeling the channel, as conventional methods of obtaining channel model parameters are not applicable to this model. Therefore, we propose a new method, Expectation-Maximization (EM)-based Near-Far Field Channel Modeling, to obtain channel model parameters, which considers whether each path is near-field or far-field as a hidden variable, and optimizes the hidden variables and channel model parameters through an alternating iteration method. Simulation results show that our method is superior to conventional near-field and far-field algorithms in fitting the near-far field channel in terms of outage probability.
    Keywords Electrical Engineering and Systems Science - Signal Processing
    Subject code 003
    Publishing date 2024-01-15
    Publishing country us
    Document type Book ; Online
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  10. Book ; Online: RIS-Assisted Interference Mitigation for Uplink NOMA

    Tabeshnezhad, Azadeh / Swindlehurst, A. Lee / Svensson, Tommy

    2023  

    Abstract: Non-orthogonal multiple access (NOMA) has become a promising technology for next-generation wireless communications systems due to its capability to provide access for multiple users on the same resource. In this paper, we consider an uplink power-domain ...

    Abstract Non-orthogonal multiple access (NOMA) has become a promising technology for next-generation wireless communications systems due to its capability to provide access for multiple users on the same resource. In this paper, we consider an uplink power-domain NOMA system aided by a reconfigurable intelligent surface (RIS) in the presence of a jammer that aims to maximize its interference on the base station (BS) uplink receiver. We consider two kinds of RISs, a regular RIS whose elements can only change the phase of the incoming wave, and an RIS whose elements can also attenuate the incoming wave. Our aim is to minimize the total power transmitted by the user terminals under quality-of-service constraints by controlling both the propagation from the users and the jammer to the BS with help of the RIS. The resulting objective function and constraints are both non-linear and non-convex, so we address this problem using numerical optimization. Our numerical results show that the RIS can help to dramatically reduce the per user required transmit power in an interference-limited scenario.
    Keywords Computer Science - Information Theory ; Electrical Engineering and Systems Science - Signal Processing ; Electrical Engineering and Systems Science - Systems and Control ; Mathematics - Optimization and Control
    Subject code 003
    Publishing date 2023-01-31
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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