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  1. AU="Christian Young"
  2. AU=Takeuchi Kaoru
  3. AU="Wiślicki, W."
  4. AU="Veiga, Susana"
  5. AU="Reynolds, Matthew W."
  6. AU="Oates, Stephen B"
  7. AU=Okubo K
  8. AU="Behnood, Sanaz"

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  1. Artikel ; Online: Predicting LQ45 financial sector indices using RNN-LSTM

    Seng Hansun / Julio Christian Young

    Journal of Big Data, Vol 8, Iss 1, Pp 1-

    2021  Band 13

    Abstract: Abstract As one of the most popular financial market instruments, the stock has formed one of the most massive and complex financial markets in the world. It could handle millions of transactions within a short period of time and highly unpredictable. In ...

    Abstract Abstract As one of the most popular financial market instruments, the stock has formed one of the most massive and complex financial markets in the world. It could handle millions of transactions within a short period of time and highly unpredictable. In this study, we aim to implement a famous Deep Learning method, namely the long short-term memory (LSTM) networks, for the stock price prediction. We limit the stocks to those that are included in the LQ45 financial sectors indices, i.e., BBCA, BBNI, BBRI, BBTN, BMRI, and BTPS. Rather than using too deep network architecture, we propose using a simple three-layer LSTM network architecture to predict the stocks’ closing prices. We found that the prediction results fall in the reasonable forecasting category. Moreover, it is worth noting that two of the considered stocks, namely, BBCA and BMRI, have the lowest MAPE values at 19.1020 and 18.6135, which fall in the good forecasting results. Hence, the proposed LSTM model is most recommended to be used on those two stocks.
    Schlagwörter Deep learning ; LQ45 financial sector indices ; LSTM ; Prediction ; Stock market ; Computer engineering. Computer hardware ; TK7885-7895 ; Information technology ; T58.5-58.64 ; Electronic computers. Computer science ; QA75.5-76.95
    Thema/Rubrik (Code) 332
    Sprache Englisch
    Erscheinungsdatum 2021-07-01T00:00:00Z
    Verlag SpringerOpen
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  2. Artikel ; Online: Automated selection of mid-height intervertebral disc slice in traverse lumbar spine MRI using a combination of deep learning feature and machine learning classifier.

    Friska Natalia / Julio Christian Young / Nunik Afriliana / Hira Meidia / Reyhan Eddy Yunus / Sud Sudirman

    PLoS ONE, Vol 17, Iss 1, p e

    2022  Band 0261659

    Abstract: Abnormalities and defects that can cause lumbar spinal stenosis often occur in the Intervertebral Disc (IVD) of the patient's lumbar spine. Their automatic detection and classification require an application of an image analysis algorithm on suitable ... ...

    Abstract Abnormalities and defects that can cause lumbar spinal stenosis often occur in the Intervertebral Disc (IVD) of the patient's lumbar spine. Their automatic detection and classification require an application of an image analysis algorithm on suitable images, such as mid-sagittal images or traverse mid-height intervertebral disc slices, as inputs. Hence the process of selecting and separating these images from other medical images in the patient's set of scans is necessary. However, the technological progress in making this process automated is still lagging behind other areas in medical image classification research. In this paper, we report the result of our investigation on the suitability and performance of different approaches of machine learning to automatically select the best traverse plane that cuts closest to the half-height of an IVD from a database of lumbar spine MRI images. This study considers images features extracted using eleven different pre-trained Deep Convolution Neural Network (DCNN) models. We investigate the effectiveness of three dimensionality-reduction techniques and three feature-selection techniques on the classification performance. We also investigate the performance of five different Machine Learning (ML) algorithms and three Fully Connected (FC) neural network learning optimizers which are used to train an image classifier with hyperparameter optimization using a wide range of hyperparameter options and values. The different combinations of methods are tested on a publicly available lumbar spine MRI dataset consisting of MRI studies of 515 patients with symptomatic back pain. Our experiment shows that applying the Support Vector Machine algorithm with a short Gaussian kernel on full-length image features extracted using a pre-trained DenseNet201 model is the best approach to use. This approach gives the minimum per-class classification performance of around 0.88 when measured using the precision and recall metrics. The median performance measured using the precision metric ranges ...
    Schlagwörter Medicine ; R ; Science ; Q
    Thema/Rubrik (Code) 006
    Sprache Englisch
    Erscheinungsdatum 2022-01-01T00:00:00Z
    Verlag Public Library of Science (PLoS)
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  3. Artikel ; Online: Aboriginal Young People’s Experiences of Accessibility in Mental Health Services in Two Regions of New South Wales, Australia

    Jasper Garay / Anna Williamson / Christian Young / Janice Nixon / Mandy Cutmore / Simone Sherriff / Natalie Smith / Kym Slater / Michelle Dickson

    International Journal of Environmental Research and Public Health, Vol 20, Iss 1730, p

    2023  Band 1730

    Abstract: This article assesses the accessibility of mainstream mental health services (MMHSs) in two regions of New South Wales (NSW), Australia, based on experiences and perspectives of Aboriginal young people aged 16–25. Semi-structured yarning interviews were ... ...

    Abstract This article assesses the accessibility of mainstream mental health services (MMHSs) in two regions of New South Wales (NSW), Australia, based on experiences and perspectives of Aboriginal young people aged 16–25. Semi-structured yarning interviews were conducted with thirteen Aboriginal young people in two regions of NSW. Thematic analysis was undertaken by all research team members to identify major themes from the data and conceptual connections between them. The identified themes from individual analysis and coding were triangulated during several analysis meetings to finalise the key themes and findings. Aboriginal young people had no experience of engaging with early-intervention MMHSs. MMHSs were identified as inaccessible, with most participants unaware that MMHSs existed in each region. Due to MMHSs being inaccessible, many Aboriginal young people presented to emergency departments (EDs) during a crisis. Aboriginal Community Controlled Health Services (ACCHSs) were identified as key providers of accessible, culturally meaningful, and effective social and emotional wellbeing (SEWB) service support for Aboriginal young people in NSW. If health and wellbeing outcomes are to improve for Aboriginal young people in NSW, MMHSs must increase accessibility for Aboriginal young people requiring SEWB support.
    Schlagwörter Aboriginal ; mental health ; young people ; social and emotional wellbeing ; cultural safety ; yarning ; Medicine ; R
    Thema/Rubrik (Code) 360
    Sprache Englisch
    Erscheinungsdatum 2023-01-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  4. Artikel ; Online: Simulated Case of Massive Hemoptysis

    Christian Young

    MedEdPORTAL, Vol

    2007  Band 3

    Abstract: Abstract This simulated case details a frequent and usually benign complaint, a cough, which becomes a very difficult situation, massive hemoptysis requiring intentional mainstem intubation. This resource includes the simulated case narrative along with ... ...

    Abstract Abstract This simulated case details a frequent and usually benign complaint, a cough, which becomes a very difficult situation, massive hemoptysis requiring intentional mainstem intubation. This resource includes the simulated case narrative along with case debriefing. The case is designed to instruct medical students and residents in the management and stabilization of patients with massive hemoptysis. This simulation is intended to improve understanding and competence in the management of a potentially life-threatening clinical scenario.
    Schlagwörter Mainstem Intubation ; Massive Hemoptysis ; Medicine (General) ; R5-920 ; Education ; L
    Sprache Englisch
    Erscheinungsdatum 2007-08-01T00:00:00Z
    Verlag Association of American Medical Colleges
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  5. Artikel ; Online: Parents' and carers' views on factors contributing to the health and wellbeing of urban Aboriginal children

    Hilary M. Miller / Christian Young / Janice Nixon / Melissa Talbot‐McDonnell / Mandy Cutmore / Allison Tong / Jonathan C. Craig / Susan Woolfenden

    Australian and New Zealand Journal of Public Health, Vol 44, Iss 4, Pp 265-

    2020  Band 270

    Abstract: Abstract Objective: To identify and describe caregiver perspectives on factors important for the health and wellbeing of urban Aboriginal children. Methods: Caregivers of Aboriginal children participating in the Study of Environment on Aboriginal ... ...

    Abstract Abstract Objective: To identify and describe caregiver perspectives on factors important for the health and wellbeing of urban Aboriginal children. Methods: Caregivers of Aboriginal children participating in the Study of Environment on Aboriginal Resilience and Child Health (SEARCH) were asked to describe the single most important factor that would help their children to be healthy and well. Responses were analysed using thematic and content analysis. Results: Of the 626 carers in SEARCH, 425 (68%) provided a response. We identified 13 factors related to: loving family relationships, culturally competent healthcare, food security, active living, community services, education, social and emotional connectedness, safety, breaking cycles of disadvantage, housing availability and affordability, positive Aboriginal role models, strong culture, and carer wellbeing. Conclusions: Aligning with holistic concepts of health, caregivers believe that a broad range of child, family and environmental‐level factors are needed to ensure the health and wellbeing of Aboriginal children. Implications for public health: This study highlights the importance of providing public health initiatives that enable equal access to the social determinants of health for carers of Aboriginal children. Affordable and adequate housing, food security, culturally appropriate healthcare, and family and community connectedness remain critical areas for targeted initiatives.
    Schlagwörter Aboriginal ; children ; wellbeing ; qualitative ; caregiver ; Public aspects of medicine ; RA1-1270
    Thema/Rubrik (Code) 360
    Sprache Englisch
    Erscheinungsdatum 2020-08-01T00:00:00Z
    Verlag Wiley
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  6. Artikel ; Online: Automated measurement of anteroposterior diameter and foraminal widths in MRI images for lumbar spinal stenosis diagnosis.

    Friska Natalia / Hira Meidia / Nunik Afriliana / Julio Christian Young / Reyhan Eddy Yunus / Mohammed Al-Jumaily / Ala Al-Kafri / Sud Sudirman

    PLoS ONE, Vol 15, Iss 11, p e

    2020  Band 0241309

    Abstract: Lumbar Spinal Stenosis causes low back pain through pressures exerted on the spinal nerves. This can be verified by measuring the anteroposterior diameter and foraminal widths of the patient's lumbar spine. Our goal is to develop a novel strategy for ... ...

    Abstract Lumbar Spinal Stenosis causes low back pain through pressures exerted on the spinal nerves. This can be verified by measuring the anteroposterior diameter and foraminal widths of the patient's lumbar spine. Our goal is to develop a novel strategy for assessing the extent of Lumbar Spinal Stenosis by automatically calculating these distances from the patient's lumbar spine MRI. Our method starts with a semantic segmentation of T1- and T2-weighted composite axial MRI images using SegNet that partitions the image into six regions of interest. They consist of three main regions-of-interest, namely the Intervertebral Disc, Posterior Element, and Thecal Sac, and three auxiliary regions-of-interest that includes the Area between Anterior and Posterior elements. A novel contour evolution algorithm is then applied to improve the accuracy of the segmentation results along important region boundaries. Nine anatomical landmarks on the image are located by delineating the region boundaries found in the segmented image before the anteroposterior diameter and foraminal widths can be measured. The performance of the proposed algorithm was evaluated through a set of experiments on the Lumbar Spine MRI dataset containing MRI studies of 515 patients. These experiments compare the performance of our contour evolution algorithm with the Geodesic Active Contour and Chan-Vese methods over 22 different setups. We found that our method works best when our contour evolution algorithm is applied to improve the accuracy of both the label images used to train the SegNet model and the automatically segmented image. The average error of the calculated right and left foraminal distances relative to their expert-measured distances are 0.28 mm (p = 0.92) and 0.29 mm (p = 0.97), respectively. The average error of the calculated anteroposterior diameter relative to their expert-measured diameter is 0.90 mm (p = 0.92). The method also achieves 96.7% agreement with an expert opinion on determining the severity of the Intervertebral Disc herniations.
    Schlagwörter Medicine ; R ; Science ; Q
    Thema/Rubrik (Code) 006
    Sprache Englisch
    Erscheinungsdatum 2020-01-01T00:00:00Z
    Verlag Public Library of Science (PLoS)
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  7. Artikel ; Online: Perspectives on childhood resilience among the Aboriginal community

    Christian Young / Allison Tong / Janice Nixon / Peter Fernando / Deanna Kalucy / Simone Sherriff / Kathleen Clapham / Jonathan C. Craig / Anna Williamson

    Australian and New Zealand Journal of Public Health, Vol 41, Iss 4, Pp 405-

    an interview study

    2017  Band 410

    Abstract: Abstract Objective: To describe Aboriginal community members' perspectives on the outcomes and origins of resilience among Aboriginal children. Methods: Face‐to‐face interviews were conducted with 36 Aboriginal adults (15 health service professionals, 8 ... ...

    Abstract Abstract Objective: To describe Aboriginal community members' perspectives on the outcomes and origins of resilience among Aboriginal children. Methods: Face‐to‐face interviews were conducted with 36 Aboriginal adults (15 health service professionals, 8 youth workers and 13 community members) at two urban and one regional Aboriginal Community Controlled Health Service in New South Wales. Interviews were transcribed and analysed thematically. Results: We identified six themes: withstanding risk (displaying normative development, possessing inner fortitude); adapting to adversity (necessary endurance, masking inner vulnerabilities); positive social influences (secure family environments, role modelling healthy behaviours and relationships); instilling cultural identity (investing in Aboriginal knowledge, building a strong cultural self‐concept); community safeguards (offering strategic sustainable services, holistic support, shared responsibility, providing enriching opportunities); and personal empowerment (awareness of positive pathways, developing self‐respect, fostering positive decision making). Conclusions: Community members believed that resilient Aboriginal children possessed knowledge and self‐belief that encouraged positive decision making despite challenging circumstances. A strong sense of cultural identity and safe, stable and supportive family environments were thought to promote resilient behaviours. Implications for public health: Many Aboriginal children continue to face significant adversity. More sustainable, Aboriginal‐led programs are needed to augment positive family dynamics, identify at‐risk children and provide safeguards during periods of familial adversity.
    Schlagwörter Indigenous ; resilience ; children ; qualitative ; Public aspects of medicine ; RA1-1270
    Thema/Rubrik (Code) 360
    Sprache Englisch
    Erscheinungsdatum 2017-08-01T00:00:00Z
    Verlag Wiley
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  8. Artikel ; Online: A case study of enhanced clinical care enabled by Aboriginal health research

    Christian Young / Hasantha Gunasekera / Kelvin Kong / Alison Purcell / Sumithra Muthayya / Frank Vincent / Darryl Wright / Raylene Gordon / Jennifer Bell / Guy Gillor / Julie Booker / Peter Fernando / Deanna Kalucy / Simone Sherriff / Allison Tong / Carmen Parter / Sandra Bailey / Sally Redman / Emily Banks /
    Jonathan C. Craig

    Australian and New Zealand Journal of Public Health, Vol 40, Iss 6, Pp 523-

    the Hearing, EAr health and Language Services (HEALS) project

    2016  Band 528

    Abstract: Abstract Objective: To describe and evaluate Hearing EAr health and Language Services (HEALS), a New South Wales (NSW) health initiative implemented in 2013 and 2014 as a model for enhanced clinical services arising from Aboriginal health research. ... ...

    Abstract Abstract Objective: To describe and evaluate Hearing EAr health and Language Services (HEALS), a New South Wales (NSW) health initiative implemented in 2013 and 2014 as a model for enhanced clinical services arising from Aboriginal health research. Methods: A case‐study involving a mixed‐methods evaluation of the origins and outcomes of HEALS, a collaboration among five NSW Aboriginal Community Controlled Health Services (ACCHS), the Sydney Children's Hospitals Network, NSW Health, the Aboriginal Health and Medical Research Council, and local service providers. Service delivery data was collected fortnightly; semi‐structured interviews were conducted with healthcare providers and caregivers of children who participated in HEALS. Results: To circumvent health service barriers, HEALS used relationships established through the Study of Environment on Aboriginal Resilience and Child Health (SEARCH) to form a specialist healthcare network. HEALS employed dedicated staff and provided a Memorandum of Understanding (detailing mutual goals and responsibilities) for each ACCHS. Despite very tight timeframes, HEALS provided services for 653 Aboriginal children, including 5,822 speech‐language pathology sessions and 219 Ear, Nose and Throat procedures. Four themes reflecting the perceived impact of HEALS were identified: valued clinical outcomes, raising community awareness, developing relationships/networks and augmented service delivery. Conclusions: HEALS delivered rapid and effective specialist healthcare services through an existing research collaboration with five ACCHS, cooperation from local health service providers, and effective community engagement. Implications for Public Health: HEALS serves as a framework for targeted, enhanced healthcare that benefits Aboriginal communities by encapsulating the ‘no research without service’ philosophy.
    Schlagwörter ear ; nose and throat ; speech‐language pathology ; service delivery ; Indigenous ; Public aspects of medicine ; RA1-1270
    Thema/Rubrik (Code) 360
    Sprache Englisch
    Erscheinungsdatum 2016-12-01T00:00:00Z
    Verlag Wiley
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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