• Journal of Internet Computing and Services
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• v.21 no.5
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• pp.67-73
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• 2020

In this paper, we present a CNN-based gesture recognition approach which reduces the memory burden of input data. Most of the neural network-based gesture recognition methods have used a sequence of frame images as input data, which cause a memory burden problem. We use a motion history image in order to define a meaningful gesture. The motion history image is a grayscale image into which the temporal motion information is collapsed by synthesizing silhouette images of a user during the period of one meaningful gesture. In this paper, we first summarize the previous traditional approaches and neural network-based approaches for gesture recognition. Then we explain the data preprocessing procedure for making the motion history image and the neural network architecture with three convolution layers for recognizing the meaningful gestures. In the experiments, we trained five types of gestures, namely those for charging power, shooting left, shooting right, kicking left, and kicking right. The accuracy of gesture recognition was measured by adjusting the number of filters in each layer in the proposed network. We use a grayscale image with 240 × 320 resolution which defines one meaningful gesture and achieved a gesture recognition accuracy of 98.24%.

• Journal of The Korean Society of Integrative Medicine
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• v.5 no.2
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• pp.71-81
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• 2017

Purpose: This study was conducted to investigate the level of nursing students' knowledge, attitude and behavior toward the elderly; correlations between the variables; and the factors influencing the behavior. Methods: Data were collected by 380 nursing students using a self-questionnaire from February 13th to 24th of 2017. Data were analyzed using t-test, one-way ANOVA, Pearson's correlation coefficients and stepwise linear regression with SPSS WIN 19.0. Result: The scores of knowledge, attitude and behavior toward elderly were 11.96 points (range 0~25), 4.51 points (range 1~7), 3.48 points (range 1~4), respectively. Significant differences were found in knowledge, attitude and behavior according to volunteer experience. There were positive correlations between the three variables. Factors influencing the behavior were volunteer experiences and the attitude toward the elderly, which explained about 17.7% of total variance. Conclusion: These results indicate a need to develop the gerontological nursing education program to lead to an increase of positive attitudes including volunteer work for the elderly. Accordingly, the program will help strengthen the nursing students' positive behavior toward the elderly.

• Journal of Korean Biological Nursing Science
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• v.20 no.1
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• pp.30-37
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• 2018

Purpose: The purpose of this study was to examine the relationship between sleep quality and stress among nursing students. Methods: A cross-sectional study was conducted with 94 nursing students from a University in Seoul. Participants completed questionnaires and the data were analyzed using t-test, ANOVA, and Pearson correlation coefficients. Results: The mean score of sleep quality was $6.93{\pm}2.66$ among nursing students and 81.9% had a sleep problem. The mean score of stress was $18.61{\pm}4.84$. Sleep quality was significantly different by clinical practice days per week, subjective physical health status, and subjective mental health status. Stress levels were significantly different by subjective physical health status, subjective mental health status, social relationship satisfaction, and satisfaction levels of nursing major and university. A significant relationship between sleep quality and stress (r= .45, p< .001) was found, meaning that a lower quality of sleep was significantly correlated with higher stress level. Conclusion: The results indicated that most nursing students had sleep problems and stress. Therefore, interventions are needed to be developed to lower the level of stress and increase the quality of sleep among nursing students.

• Journal of Microbiology and Biotechnology
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• v.22 no.7
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• pp.894-901
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• 2012

Based on their respective antitumor and thrombolytic activities, the superantigen staphylococcal enterotoxin C2 (SEC2) and staphylokinase (Sak) were chosen for the construction of the novel chimeric proteins Sak-linker-SEC2 and SEC2-linker-Sak using a linker composed of nine Ala residues. Both chimeric proteins possessed nearly the same PBMC proliferation stimulating activity and antitumor activity as SEC2 and thrombolytic activity as Sak. Neither the SEC2 or Sak component of each chimeric protein affected the activity of the other component. The results presented in this study provide a possible strategy to prevent and cure tumor thrombus.

• Molecules and Cells
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• v.43 no.2
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• pp.153-159
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• 2020

Neurofibromatosis type 1 (NF1) is an autosomal dominant disorder. NF1 patients are predisposed to formation of several type solid tumors as well as to juvenile myelomonocytic leukemia. Loss of NF1 results in dysregulation of MAPK, PI3K and other signaling cascades, to promote cell proliferation and to inhibit cell apoptosis. The RUNX1 gene is associated with stem cell function in many tissues, and plays a key role in the fate of stem cells. Aberrant RUNX1 expression leads to context-dependent tumor development, in which RUNX1 may serve as a tumor suppressor or an oncogene in specific tissue contexts. The co-occurrence of mutation of NF1 and RUNX1 is detected rarely in several cancers and signaling downstream of RAS-MAPK can alter RUNX1 function. Whether aberrant RUNX1 expression contributes to NF1-related tumorigenesis is not fully understood. This review focuses on the role of RUNX1 in NF1-related tumors and blood disorders, and in sporadic cancers.

• The Journal of the Korea Contents Association
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• v.21 no.12
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• pp.331-336
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• 2021

Vacuum metal deposition(VMD) using gold and zinc is known as a very sensitive technique of developing latent fingerprints on nonporous surfaces by excellent malleability and ductility of gold. However, VMD produces empty print which cannot be identified. There is only presumption about the cause of occurrence of empty print, the exact cause is not known. In this study, we experiment on the freshness of fingerprints and sensitivity of techniques that are estimated as the factors causing empty print, based on this, we suggest cyanoacrylate fuming is effective to redevelop empty print.

• Korean Journal of Childcare and Education
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• v.14 no.6
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• pp.187-203
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• 2018

Objective: This study aimed to examine the mediating effect of mothers' parenting stress on the relationship between their self-differentiation and the tendency of addiction to social media. Methods: The participants in this study were two hundred and eight mothers with children aged 36 months or younger. Data were analyzed statistically using frequency, Pearson's correlation coefficients, and hierarchical multiple regression analysis. Results: The results of the present study are as follows. First, the mothers' self-differentiation was negatively associated with their parenting stress and social media addiction tendency. Second, both the total scores of the mothers' parenting stress and their distress were found to partially mediate the relationship between their self-differentiation and social media addiction tendency. However, the mothers' daily stress did not mediate the relationship between the variables. Conclusion/Implications: The findings of the current study have implications for developing ways of intervening in mothers' social media addiction tendency by reducing their parenting stress, particularly for mothers with low levels of self-differentiation.

• BMB Reports
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• v.52 no.8
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• pp.502-507
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• 2019

Translation is a costly, but inevitable, cell maintenance process. To reduce unnecessary ATP consumption in cells, a fine-tuning mechanism is needed for both ribosome biogenesis and translation. Previous studies have suggested that the ribosome functions as a hub for many cellular signals such as ribotoxic stress response, mammalian target of rapamycin (mTOR), and ribosomal S6 kinase (RSK) signaling. Therefore, we investigated the relationship between ribosomes and mitogen-activated protein kinase (MAPK) activation under ribotoxic stress conditions and found that the activation of c-Jun N-terminal kinases (JNKs) was suppressed by ribosomal protein knockdown but that of p38 was not. In addition, we found that JNK activation is driven by the association of inactive JNK in the 80S monosomes rather than the polysomes. Overall, these data suggest that the activation of JNKs by ribotoxic stress is attributable to 80S monosomes. These 80S monosomes are active ribosomes that are ready to initiate protein translation, rather than polysomes that are already acting ribosomes involved in translation elongation.

• Perspectives in Nursing Science
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• v.18 no.1
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• pp.16-27
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• 2021

Purpose: Sexuality is a fundamental element of human life and is closely related to mental health. This study was conducted to understand domestic research trends on gender, mental health, and psychological well-being through an integrated review. Methods: Through four domestic databases, 15 papers were finally selected using the search terms 'sex', 'mental health', and 'psychological well-being'. Results: Fifteen papers have been published since 2000 and 10 documents have been published since 2010. A majority of the studies were basic research and reviews, and these included four qualitative studies. Depending on the subject, we classified five articles into three themes by the developmental stages (youth, married women, and the elderly), eight sexual minority studies, and two other studies (right to sexual self-determination, and dating for people with disabilities). Conclusion: A more open social concern and approach to sex, the most basic human need, is warranted. The field of nursing practice requires more attention.

• International Journal of Advanced Culture Technology
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• v.10 no.3
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• pp.111-119
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• 2022

Boredom is considered anxiety and is an experience accompanied by a lack of meaning because the need for meaning is not met. It is the pain that people feel without using their mind, and the suffering that people fall into the absence of desire. On the other hand, religious activities give people meaning in life, which reduces the tendency to feel bored. This study investigates whether there is a difference in boredom depending on whether individuals participate in religious activities, and to verify whether the meaning in life mediates the relationships between religious activities and boredom. We predicted that if individuals engaged in religious activities, the meaning in life would increase, and they would be less bored than those who did not. A total of 82 college students participated in this study. Results showed that there were significant differences in the meaning in life and boredom between the two groups according to whether they participated in religious activities or not. The group actively participating in religious activities had significantly higher meaning in life and lower boredom than the non-religious group. Second, the meaning in life significantly mediated the relationship between religious activities and boredom. We conclude that active participation in religious activities can increase the meaning in life and ultimately reduce boredom. Based on the results of this study, the implications and suggestions for follow-up studies are discussed.