• Smart Structures and Systems
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• v.29 no.1
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• pp.1-16
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• 2022

Despite recent breakthroughs in deep learning and computer vision fields, the pixel-wise identification of tiny objects in high-resolution images with complex disturbances remains challenging. This study proposes a modified U-net for tiny crack segmentation in real-world steel-box-girder bridges. The modified U-net adopts the common U-net framework and a novel Self-Attention-Self-Adaption (SASA) neuron as the fundamental computing element. The Self-Attention module applies softmax and gate operations to obtain the attention vector. It enables the neuron to focus on the most significant receptive fields when processing large-scale feature maps. The Self-Adaption module consists of a multiplayer perceptron subnet and achieves deeper feature extraction inside a single neuron. For data augmentation, a grid-based crack random elastic deformation (CRED) algorithm is designed to enrich the diversities and irregular shapes of distributed cracks. Grid-based uniform control nodes are first set on both input images and binary labels, random offsets are then employed on these control nodes, and bilinear interpolation is performed for the rest pixels. The proposed SASA neuron and CRED algorithm are simultaneously deployed to train the modified U-net. 200 raw images with a high resolution of 4928 × 3264 are collected, 160 for training and the rest 40 for the test. 512 × 512 patches are generated from the original images by a sliding window with an overlap of 256 as inputs. Results show that the average IoU between the recognized and ground-truth cracks reaches 0.409, which is 29.8% higher than the regular U-net. A five-fold cross-validation study is performed to verify that the proposed method is robust to different training and test images. Ablation experiments further demonstrate the effectiveness of the proposed SASA neuron and CRED algorithm. Promotions of the average IoU individually utilizing the SASA and CRED module add up to the final promotion of the full model, indicating that the SASA and CRED modules contribute to the different stages of model and data in the training process.

• Journal of the Korean Institute of Telematics and Electronics A
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• v.29A no.3
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• pp.1-7
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• 1992

This paper discusses the self-adaptive equalization technique which has adaptibility to channel characteristics varation without training sequence. The criterion function used in this paper is based on the concept of cumulant matching. This function can be applied to nonminimum phase channel, and we can verify the fact that if the constrained condition is satisfied. this criterion has no local optimum. As the adaption algorithm, the normalized gradient-searching technique is used. Simulations verify the performance of our method in case of 8PAM, 8PSK(CCITT V.27), 16QAM(CCITT V.29) sources and three type nonminimum phase channels.

• Journal of Korean Clinical Health Science
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• v.5 no.3
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• pp.973-980
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• 2017

Purpose. To understand the effectiveness of training programs to improve the daily living activities and social adaption abilities of stroke patients. Methods. The participant included 1 stroke patient in Jeonbuk, from March to August 2016. The test tools used was the Canadian occupational performance measurement, International classification of function, disability and health co-resets. After applying the training program, I compared the daily life satisfaction and social adaption abilities. Results. According to this study, both daily life satisfaction and social adaption abilities improved. Conclusion. In conclusion, after an exercise program, self- help program, and underwater exercise programs, daily life satisfaction and social adaptation levels were improved. Therefore, the programs that apply to stroke patients could be found to be effective.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.6
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• pp.41-50
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• 2020

The purpose of this study was to identify latent classes in school readiness which were measured by both parents and teachers, and to test the relationship with school adaption, academic abilities, problematic behaviors, self-esteem, and happiness. Latent Profile Analysis (LPA), MANOVA, and one-way ANOVA were conducted using the data of 1,154 1st to 3rd grade elementary school students, and the data was collected between the 7th year (2014) to the 10th year (2017) from the Korean Children and Youth Panel Study. The results of study were as follows. First, four school readiness groups were identified: the consistent low group, parent perceived high group, the teacher perceived high group, the consistent high group. Second, the consistent high group and the teacher perceived high group showed relatively better academic abilities and school adaption than the consistent low group. Furthermore, the consistent high group showed higher academic abilities, self-esteem, and happiness, but lower problematic behaviors than the consistent low group. The findings of this study could be utilized as preliminary data for understanding school readiness to promote successful school adaption and psychological well-being of children.

• Journal of Digital Convergence
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• v.17 no.10
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• pp.273-282
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• 2019

The purpose of study was to examine and compare the self-esteem, interpersonal relationship, happiness, and college adjustment between Type D and non-Type D personality among nursing students. Subjects included a total 181 nursing students (Type D personality: n=53, non-Type D personality: n=128). Data were collected through personal interviews using a questionnaire. The collected date were analyzed using a ${\chi}^2$-test, Fisher's exact test, and independent t-test. There were significant differences on self-esteem, interpersonal relationship, happiness, and college adjustment between Type D and non-Type D personality among nursing students. Self-esteem showed significant differences in degree of adaption, interpersonal relationship in religion, happiness in economic status, college adjustment in religion and degree of adaption (Type D personality subjects). Type D personality lowered self-esteem, interpersonal relationship, happiness, and college adjustment in nursing students. Strategies for Type D personality in nursing students are needed to increase self-esteem, interpersonal relationship, happiness, and college adjustment.

• Journal of the Korean Society for Precision Engineering
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• v.14 no.2
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• pp.160-168
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• 1997

A $H_{\infty}$self-tuning control scheme for the tip position of a flexible link robot handling unknown loads is presented here. The scheme essentially comprises a recursive least-squares identification algorithm and $H_{\infty}$self-tunning controller. The $H_{\infty}$control low is designed to be robust to uncertain parameters and the self-tunning action provides adaption to unknown parameters. Through numerical study, the performance comparison of the $H_{\infty}$self-tuning controller with a constant gain $H_{\infty}$controller as well as a LQG self-tuning controller clearly shows its superior ability in handling load changes in quiescent states.nt states.

• Journal of the Korean Home Economics Association
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• v.30 no.3
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• pp.223-239
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• 1992

The purpose of this study is to classify the home management behaviors of urban housewives and to find out variables which influence them. Following are the results. 1. The home management behavior of urban housewives are classified into six types. Thouse expense and convenience oriented type, using the information and family centered type, tradition and steady oriented type, improving life type, conservative and thrifty type and the self-faithfulness and change adaption type. 2. Follows are the variables which have influenced on home management behaviors of urban housewives. \circled1 The level of education of housewives, perceived level of economical resources, income and evaluation level of life have influenced on expense and convenience oriented type. \circled2 The duration of marriage, the level of education of husband, the satisfaction of housework and communication interaction have influenced on using the information and family centered type. \circled3 The satisfaction of housework, the perceived level of economical resources, the level of education of husband and the age of housewives have influenced on the tradition and steady oriented type. \circled4 The perceived level of family resources and the communication interaction have influenced on the improving life type. \circled5 The communication interaction and the income have influenced on conservative and thrifty type. \circled6 The perceived level of economical resources, the satisfication of housework, the communication interaction, the level of education of housewives, the age of housewives and the number of children have influenced on the self-faithfulness and change-adaption type.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.12 no.2
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• pp.932-945
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• 2018

Everything in the world is becoming connected and interactive due to the Internet. The future of interactive smart environments such as smart cities, smart industries, or smart farms demand high network bandwidth, high network flexibility, and self-organization systems without costly hardware upgrades, and they provide a sustainable, scalable, and replicable smart environment backbone infrastructure. This paper presents a new Hybrid Software-Defined architecture for integrating Internet-of-Things technologies that are essential technologies for smart environments. It combines a software-defined networking infrastructure and a real-time distributed network framework with an advanced optimization to enable self-configuration, self-management, and self-adaption for providing seamless communication and efficiently managing a vast number of smart heterogeneous devices.

• The Korean Journal of Community Living Science
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• v.17 no.1
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• pp.87-99
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• 2006

The purpose of this study was to explore the relationship between self-rated health and Activity of Daily Living (ADL) and self-care behavior of rural elderly in Korea, focused on the difference among three distinctive living arrangements; living alone, living only with his/her spouse, and living with their married children. For this purpose, data were gathered from a nationwide survey, a total of 586 elderly aged 65 or older and living in rural area, using the structured questionnaire. Also, self-care behavior were categorized into 4 groups; life-style practice, medical self-care, adaption to functional limitation, and emotional management. The major findings are as follows; 1) Rural elderly perceived their health little and more 'bad' but their ADL capacity were 'not difficult', especially among elderly living with spouse. 2) The level of 20 items in self-care behavior ($1{\sim}5$score) was ranged from 2.51 to 3.81 score. The behavior level of regular exercise, setting up additional phone, taking a nutrient, and testing BP or pulse regularly were low but that of taking a medicine according to prescription, close contact with other people, and regular eating were proportionally high. 3) The majority of self-care behavior were correlated with subjective health positively but medical self-care behavior were correlated with subjective health or ADL negatively. Based on these results, policy implications are discussed.

• Journal of Korean Clinical Nursing Research
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• v.25 no.2
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• pp.161-169
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• 2019

Purpose: This study was conducted to examine the effect of a Happiness Self-Coaching program for new graduate nurses working in cancer care units. Methods: A quasi-experimental pretest-posttest, nonequivalent control-group design was applied to conduct the study. Study participants were new graduate nurses employed within 12 months and working as shift employees at G university hospital, located in J city. A total of 21 new graduate nurses participated in the study, 10 in the experimental group, and 11 in the control group. The happiness self-coaching program was conducted weekly for 70 minutes from February 1 to June 6, 2016 for 6 weeks. The experimental group received the Happiness Self-Coaching program through lectures, presentation, group activities, and strength card play. Data were analyzed by using repeated measure ANOVA and paired t-test. Results: The experimental group demonstrated significantly higher happiness (F=6.82, p=.003) and self-efficacy (F=3.38 p=.045) levels compared to the control group. Conclusion: The Happiness Self-Coaching program was effective in enhancing new graduate nurses' happiness and self efficacy. It is recommended that nursing organizations to apply the Happiness Self -Coaching program to facilitate adaption of new graduate nurses in cancer care units.