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- 저자 : Szu-Yun Lin (검색결과 2 건)
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A Class Distance Penalty Deep Learning Method for Post-disaster Building Damage Assessment
Fang Jung Tsai,Szu-Yun Lin 대한토목학회 2024 KSCE Journal of Civil Engineering Vol.28 No.5
Automatic building damage assessment can significantly aid rescue operations, attributed to booming deep learning and remote sensing technologies. However, the class imbalance of the dataset often skews prediction models towards the majority class in the segmentation of damaged buildings. This issue is further exacerbated when damaged buildings are categorized into multiple scales, intensifying biases within the models. Hence, this research adopts an algorithm-level method to improve the reliability of post-disaster damage assessment. It proposes a novel loss function named Ordinal Class Distance Penalty Loss (OCDPL), considering the ordinal relationship between classes and penalizing the misclassifications according to the class error distance. Two hyperparameters are also introduced to enable the model to fine-tune the contribution of ordinal relationships on the loss function. The satellite images of hurricane disasters in the xBD dataset were adopted as the case study. The results show that the proposed approach can improve F1 scores and Mean Absolute Error of overall damage level classes. Notably, the findings underscore the value of leveraging information on ordinal classes to facilitate the learning of minority classes and diminish class error distances. This aspect holds particular significance for emergency responses to widespread and severe disasters.
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Suh-Ing Hsieh,Li-Ling Hsu,Hui-Ling Lin,Chen-Yi Kao,Yi-Ping Tseng,Li-Yun Szu,Ching-Yun Lee,Lun-Hui Ho,Shu-Ling Yeh,Shu-Hua Kao,Yen-Fang Chou,Tzu-Hsin Huang 한국성인간호학회 2021 성인간호학회 학술대회 Vol.2021 No.8
Aim(s): Clinical nurses are facing patients’ biopsychosocial and spiritual problems at diverse clinical settings, but they are lack of knowledge, skills, and confidence on providing spiritual care. However, no studies adopted simulated educational program and objective structure clinical examination (OSCE) to educate nurses and to assess the outcomes. Therefore, this study was to validate the effect of a scenario-based spiritual care course on spiritual care competence in clinical nurses. Methods: This non-equivalent quasi-experimental study with a pre-test and two post-tests (end of the intervention and three months later) was conducted between August 2019 and February 2021 (11 sessions). The recruitment posters with a QR code were distributed to different units at three branches of a large medical institute for recruiting clinical nurses, who provided direct patient care. The attendees of one-day scenario-based spiritual care course are the experimental group (n=53) and the control group (n=85) was matched with the experimental group (1:1-3 ratio) by similar units, ages, working experience, and clinical ladder. Instruments include basic information, self-evaluated and head nurses evaluated spiritual care competence scale (SCCS), spiritual perspective scale (SPS), and spiritual care perspective scale-revised (SCPSR) for both groups and reflective log, course satisfaction scale, OSCE checklist, and standardized patient feedback scale for the experimental group. The data were analyzed using descriptive statistics, repeated measures ANOVA, linear regression, and paired t test. Results: After controlling for pre-test scores and interest in attending spirituality/spiritual care, the experimental group showed significant higher SPS (p=0.012) and self-evaluated SCCS (p=0.002) and lower SCPSR (p=0.015) than the control group at the 2nd post-test. Repeated measure ANOVA also showed significant within-subject effects across three time points of the experimental group on SPS (p<0.001), SCPSR (p<0.001), and self-evaluated SCCS (p<0.001), but paired t test showed non-significant differences on SPS, SCPSR, and self-evaluated SCCS between pre-test and post-test with an exception of head nurse evaluated SCCS (p=0.035). The mean overall course satisfaction of the experimental group was 4.34±0.62. The mean global performance of OSCE was 3.40±0.91 and the majority of experimental group was pass (43.4%) and good (35.8%). 64.5% and 26.1% of standardized patients were partial and strongly agreed with examinees’ performance in spiritual care assessment respectively. Conclusions: The scenario-based spiritual care course is effectively to enhance clinical nurses’ spiritual care competence. It may cultivate clinical preceptors with better spiritual care pedagogy through simulation and OSCE for bedside teaching of nurse post-graduate year.
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