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  1. Article ; Online: Electrode-Skin Impedance Model Parameter Estimation in the Frequency-Domain.

    Cameron, Chris J / Fortune, Benjamin C / Pretty, Christopher G / Hayes, Michael P

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

    2023  Volume 2023, Page(s) 1–4

    Abstract: This paper presents a method for identifying parameter values for a double parallel resistor/constant-phase-element model of the electrode-skin interface for individual silver and silver/silver chloride electrodes. The impedance of each electrode was ... ...

    Abstract This paper presents a method for identifying parameter values for a double parallel resistor/constant-phase-element model of the electrode-skin interface for individual silver and silver/silver chloride electrodes. The impedance of each electrode was measured in five from 1 Hz-10 kHz. Phase features of these data were used to guide initial estimates for parameter values which were refined using a least squares algorithm. Resultant model impedances were compared with experimental data across a typical biosignal bandwidth (1 Hz-500 Hz). The method was effective in estimating component values in most datasets, and resulted in a mean relative RMS error of 7 % (σ = 8.3%) across the biosignal bandwidth.Clinical relevance- This work establishes a feature-based method for finding component parameter estimates for an electrode contact impedance model.
    MeSH term(s) Electric Impedance ; Silver ; Electrodes ; Skin ; Algorithms
    Chemical Substances Silver (3M4G523W1G)
    Language English
    Publishing date 2023-12-11
    Publishing country United States
    Document type Journal Article
    ISSN 2694-0604
    ISSN (online) 2694-0604
    DOI 10.1109/EMBC40787.2023.10340097
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Letter to the Editor Regarding "Network Meta-analysis of Food and Drug Administration-approved Treatment Options for Adults with Aquaporin-4 Immunoglobulin G-positive Neuromyelitis Optica Spectrum Disorder".

    Cree, Bruce A C / Greenberg, Benjamin / Cameron, Chris / Weinshenker, Brian G

    Neurology and therapy

    2022  Volume 11, Issue 3, Page(s) 1439–1443

    Language English
    Publishing date 2022-07-02
    Publishing country New Zealand
    Document type Letter
    ISSN 2193-8253
    ISSN 2193-8253
    DOI 10.1007/s40120-022-00376-2
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  3. Article ; Online: Unraveling Adaptive Evolutionary Divergence at Microgeographic Scales.

    Clancey, Erin / MacPherson, Ailene / Cheek, Rebecca G / Mouton, James C / Sillett, T Scott / Ghalambor, Cameron K / Funk, W Chris / Hohenlohe, Paul A

    The American naturalist

    2024  Volume 203, Issue 2, Page(s) E35–E49

    Abstract: AbstractStriking examples of local adaptation at fine geographic scales are increasingly being documented in natural populations. However, the relative contributions made by natural selection, phenotype-dependent dispersal (when individuals disperse with ...

    Abstract AbstractStriking examples of local adaptation at fine geographic scales are increasingly being documented in natural populations. However, the relative contributions made by natural selection, phenotype-dependent dispersal (when individuals disperse with respect to a habitat preference), and mate preference in generating and maintaining microgeographic adaptation and divergence are not well studied. Here, we develop quantitative genetics models and individual-based simulations (IBSs) to uncover the evolutionary forces that possibly drive microgeographic divergence. We also perform Bayesian estimation of the parameters in our IBS using empirical data on habitat-specific variation in bill morphology in the island scrub-jay (
    MeSH term(s) Humans ; Bayes Theorem ; Selection, Genetic ; Ecosystem ; Phenotype ; Genetic Variation
    Language English
    Publishing date 2024-01-02
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 207092-3
    ISSN 1537-5323 ; 0003-0147
    ISSN (online) 1537-5323
    ISSN 0003-0147
    DOI 10.1086/727723
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  4. Article ; Online: Exploring the safety and quality of mobile X-ray imaging in a new infectious disease biocontainment unit: an in situ simulation and video-reflexive study.

    Wyer, Mary / Hor, Su-Yin / Barratt, Ruth / Garrahy, Phillip / Moore, Cameron / Williams Veazey, Leah / Degeling, Chris / Gilbert, G L

    BMJ open

    2024  Volume 14, Issue 2, Page(s) e080152

    Abstract: Objectives: During a precommissioning inspection of a new biocontainment centre, radiographers noted structural features of quarantine rooms that could compromise staff and patient safety and the X-ray image quality, even after significant modifications ...

    Abstract Objectives: During a precommissioning inspection of a new biocontainment centre, radiographers noted structural features of quarantine rooms that could compromise staff and patient safety and the X-ray image quality, even after significant modifications had been made to an earlier radiography protocol. The aim of this study was to explore the safety and effectiveness of the modified protocol, in the new space, and identify improvements, if required.
    Design: A qualitative study using in situ simulation and video-reflexive methods.
    Setting: A newly built biocontainment centre, prior to its commissioning in 2021, in a large, tertiary hospital in Sydney, Australia.
    Participants: Five radiographers, and a nurse and a physician from the biocontainment centre, consented to participate. All completed the study.
    Interventions: Two simulated mobile X-ray examinations were conducted in the unit prior to its commissioning; simulations were videoed. Participants and other stakeholders analysed video footage, collaboratively, and sessions were audio recorded, transcribed and analysed thematically. Problems and potential solutions identified were collated and communicated to the hospital executive, for endorsement and actioning, if possible.
    Results: Four themes were identified from the data: infection exposure risks, occupational health and exposure risks, communication and X-ray image quality. Facilitated group reviews of video footage identified several important issues, across these four areas of risk, which had not been identified previously.
    Conclusions: In situ simulation is used, increasingly, to evaluate and improve healthcare practices. This study confirmed the added value of video-reflexive methods, which provided experienced participants with a richer view of a familiar protocol, in a new setting. Video footage can be examined immediately, or later if required, by a broader group of stakeholders, with diverse experience or expertise. Using video reflexivity, clinicians identified potential safety risks, which were collated and reported to the hospital executive, who agreed to implement modifications.
    MeSH term(s) Humans ; X-Rays ; Delivery of Health Care ; Australia ; Radiography ; Communicable Diseases
    Language English
    Publishing date 2024-02-20
    Publishing country England
    Document type Journal Article
    ZDB-ID 2599832-8
    ISSN 2044-6055 ; 2044-6055
    ISSN (online) 2044-6055
    ISSN 2044-6055
    DOI 10.1136/bmjopen-2023-080152
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  5. Article ; Online: Low cost circulatory pressure acquisition and fluid infusion rate measurement system for clinical research.

    Smith, Rachel / Rolfe, Amelia / Cameron, Chris / Shaw, Geoffrey M / Chase, J Geoffrey / Pretty, Christopher G

    HardwareX

    2022  Volume 11, Page(s) e00318

    Abstract: Acquiring patient physiological waveforms is useful for studying hemodynamic management and developing medical monitoring systems. A low cost, Arduino controlled data acquisition system acquires arterial pressure waveforms (Edwards Lifesciences TruWave ... ...

    Abstract Acquiring patient physiological waveforms is useful for studying hemodynamic management and developing medical monitoring systems. A low cost, Arduino controlled data acquisition system acquires arterial pressure waveforms (Edwards Lifesciences TruWave compatible) and measures fluid infusion rate using hanging scales. This system can be used at the same time as a clinical monitor, enabling recording of patient arterial pressure and fluid delivery for clinical research. The system is powered via a USB connection, which additionally provides serial output, aiding compatibility and customisation. A simple software user interface, developed in Python, shows outputs. Each data acquisition system, including all necessary connection cables costs ~US$90 and is multiple-use.
    Language English
    Publishing date 2022-05-21
    Publishing country England
    Document type Journal Article
    ISSN 2468-0672
    ISSN (online) 2468-0672
    DOI 10.1016/j.ohx.2022.e00318
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  6. Article ; Online: Use of Novel National Data Sets to Monitor Chemotherapy Use and Outcomes: A Retrospective Cohort Study of Non-Small-Cell Lung Cancer in Aotearoa New Zealand.

    Minhinnick, Alice M / Dunn, Alexander H / Arabnejad, Vahid / Paddison, Johanna S / Jackson, Chris G C A / Pointer, Simon M / Gurney, Jason K / Cameron, Laird B

    JCO oncology practice

    2024  Volume 20, Issue 3, Page(s) 401–408

    Abstract: Purpose: Te Aho o Te Kahu, the New Zealand Cancer Control Agency, is establishing a systemic anticancer therapy (SACT) database (Anti-Cancer Therapy-Nationally Organized Workstream [ACT-NOW]) which can be linked to other national health data collections. ...

    Abstract Purpose: Te Aho o Te Kahu, the New Zealand Cancer Control Agency, is establishing a systemic anticancer therapy (SACT) database (Anti-Cancer Therapy-Nationally Organized Workstream [ACT-NOW]) which can be linked to other national health data collections. In this article, we explore the application of ACT-NOW data in the monitoring of uptake and outcomes after the public funding of pemetrexed in Aotearoa New Zealand.
    Methods: We used the ACT-NOW collection to identify patients with advanced nonsquamous non-small-cell lung cancer, who were treated with first-line platinum-based doublet chemotherapy over an 8-year period. Data were extracted for a period of 4 years before and 4 years after the national funding of pemetrexed (November 1, 2017). Treatments were classified as historical platinum doublet (cisplatin or carboplatin with gemcitabine, vinorelbine, paclitaxel, or docetaxel) or platinum pemetrexed doublet (cisplatin or carboplatin with pemetrexed). The primary outcome was the proportion of patients receiving each treatment type, before and after November 1, 2017. To prototype linkage to outcomes data, we evaluated hospitalization and 1-year overall survival (OS) rates by treatment.
    Results: A total of 331 patients were included from four cancer centers. All patients (116 of 116) who were treated with first-line platinum-based doublet chemotherapy between November 2013 and November 2017 received historical platinum doublet chemotherapy. After the introduction of pemetrexed, between November 2017 and November 2021, 94% (203 of 215) were treated with platinum pemetrexed doublet chemotherapy and 6% (12 of 215) with historical platinum doublet chemotherapy. Linkage to outcomes data for 1-year OS, hospitalization rates, and lengths of stay outcome data were achievable.
    Conclusion: The ACT-NOW data set has the potential to facilitate evaluation of the impact of national-level SACT funding decisions on prescribing practice and specific patient outcomes. Our results support the use of these data to inform resource planning and quality improvement.
    MeSH term(s) Humans ; Carcinoma, Non-Small-Cell Lung/drug therapy ; Carcinoma, Non-Small-Cell Lung/epidemiology ; Cisplatin/adverse effects ; Carboplatin/adverse effects ; Lung Neoplasms/drug therapy ; Pemetrexed/pharmacology ; Pemetrexed/therapeutic use ; Retrospective Studies ; New Zealand/epidemiology
    Chemical Substances Cisplatin (Q20Q21Q62J) ; Carboplatin (BG3F62OND5) ; Pemetrexed (04Q9AIZ7NO)
    Language English
    Publishing date 2024-01-10
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3028198-2
    ISSN 2688-1535 ; 2688-1527
    ISSN (online) 2688-1535
    ISSN 2688-1527
    DOI 10.1200/OP.23.00483
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    Zs.A 7198: Show issues Location:
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  7. Article ; Online: Habitat-linked genetic variation supports microgeographic adaptive divergence in an island-endemic bird species.

    Cheek, Rebecca G / Forester, Brenna R / Salerno, Patricia E / Trumbo, Daryl R / Langin, Kathryn M / Chen, Nancy / Scott Sillett, T / Morrison, Scott A / Ghalambor, Cameron K / Chris Funk, W

    Molecular ecology

    2022  Volume 31, Issue 10, Page(s) 2830–2846

    Abstract: We investigated the potential mechanisms driving habitat-linked genetic divergence within a bird species endemic to a single 250- ... ...

    Abstract We investigated the potential mechanisms driving habitat-linked genetic divergence within a bird species endemic to a single 250-km
    MeSH term(s) Animals ; Ecosystem ; Gene Flow ; Genetic Variation ; Genetics, Population ; Genome-Wide Association Study ; Humans ; Male ; Passeriformes/genetics ; Selection, Genetic
    Language English
    Publishing date 2022-04-22
    Publishing country England
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S. ; Research Support, Non-U.S. Gov't
    ZDB-ID 1126687-9
    ISSN 1365-294X ; 0962-1083
    ISSN (online) 1365-294X
    ISSN 0962-1083
    DOI 10.1111/mec.16438
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  8. Article ; Online: Low cost circulatory pressure acquisition and fluid infusion rate measurement system for clinical research

    Rachel Smith / Amelia Rolfe / Chris Cameron / Geoffrey M. Shaw / J. Geoffrey Chase / Christopher G. Pretty

    HardwareX, Vol 11, Iss , Pp e00318- (2022)

    2022  

    Abstract: Acquiring patient physiological waveforms is useful for studying hemodynamic management and developing medical monitoring systems. A low cost, Arduino controlled data acquisition system acquires arterial pressure waveforms (Edwards Lifesciences TruWave ... ...

    Abstract Acquiring patient physiological waveforms is useful for studying hemodynamic management and developing medical monitoring systems. A low cost, Arduino controlled data acquisition system acquires arterial pressure waveforms (Edwards Lifesciences TruWave compatible) and measures fluid infusion rate using hanging scales. This system can be used at the same time as a clinical monitor, enabling recording of patient arterial pressure and fluid delivery for clinical research. The system is powered via a USB connection, which additionally provides serial output, aiding compatibility and customisation. A simple software user interface, developed in Python, shows outputs. Each data acquisition system, including all necessary connection cables costs ̃US$90 and is multiple-use.
    Keywords Customisable data acquisition system ; Hemodynamic analysis ; Invasive arterial pressure ; Fluid infusion rate ; Science (General) ; Q1-390
    Language English
    Publishing date 2022-04-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: Direct Visualization of the Charge Transfer in a Graphene/α-RuCl

    Rossi, Antonio / Johnson, Cameron / Balgley, Jesse / Thomas, John C / Francaviglia, Luca / Dettori, Riccardo / Schmid, Andreas K / Watanabe, Kenji / Taniguchi, Takashi / Cothrine, Matthew / Mandrus, David G / Jozwiak, Chris / Bostwick, Aaron / Henriksen, Erik A / Weber-Bargioni, Alexander / Rotenberg, Eli

    Nano letters

    2023  Volume 23, Issue 17, Page(s) 8000–8005

    Abstract: We investigate the electronic properties of a graphene and α-ruthenium trichloride (α- ... ...

    Abstract We investigate the electronic properties of a graphene and α-ruthenium trichloride (α-RuCl
    Language English
    Publishing date 2023-08-28
    Publishing country United States
    Document type Journal Article
    ISSN 1530-6992
    ISSN (online) 1530-6992
    DOI 10.1021/acs.nanolett.3c01974
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  10. Article ; Online: Exercise therapy is a beneficial intervention for chronic fatigue syndrome (PEDro synthesis).

    Dannaway, Jasan / New, Cameron C / New, Charles H / Maher, Chris G

    British journal of sports medicine

    2018  Volume 52, Issue 8, Page(s) 542–543

    MeSH term(s) Exercise Therapy ; Fatigue/therapy ; Fatigue Syndrome, Chronic/therapy ; Humans ; Randomized Controlled Trials as Topic
    Language English
    Publishing date 2018-04
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 600592-5
    ISSN 1473-0480 ; 0306-3674
    ISSN (online) 1473-0480
    ISSN 0306-3674
    DOI 10.1136/bjsports-2017-098407
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    In stock of ZB MED Cologne/Königswinter

    Zs.B 1893: Show issues Location:
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