• Journal of the Semiconductor & Display Technology
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• v.17 no.3
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• pp.108-112
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• 2018

In this paper, a respiration measurement method using FMCW signal for off-the-shelf smartphone is presented and investigated. The proposed algorithm transmits FMCW signal periodically instead of transmitting continuously so that one can reduce the power consumption from speaker in smartphone and the algorithm complexity. In order to eliminate the clicking noise generated when transmitting FMCW signal, Tukey window with ${\alpha}=0.01$ is applied to prevent the noise from being heard. An application program for Android OS which can transmit FMCW signal through speaker and record the reflected signals through MIC has been developed. Since the total duration of the signal transmission is set to 20msec per 1 second for the experiments, the power consumption can be decreased by 80% compared to the continuous transmission. It was confirmed that the clicking noise is inaudible as long as a smartphone is located at more than 10cm from ears. In the experiments on a sleeping child, the breathing signal of about 0.27Hz was measured.

• Health Policy and Management
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• v.29 no.1
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• pp.1-3
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• 2019

Suicide is a major problem in Korean health care and a serious social problem. In Korea, 12,463 people (24.3 per 100,000) lost their lives due to suicide in 2017. Although the government has established three National Comprehensive Plan of Suicide Prevention (2004, 2009, 2016), and National Action Plan of Suicide Prevention (2018), the suicide rate is still high. The suicide rate of the elderly is especially high. This is due to the economic vulnerability of the elderly in Korea. Therefore, in order to prevent suicide in Korea, mental health care approach and social welfare approach should be integrated. The intervention of preventing suicide of suicide attempters should include social welfare services as well as mental health program and should be based on community. There are many health problems, including prevention of suicide, which can not be solved only by the efforts of health care. Many health problems are social problems and the integrated approach is needed to solve them. In order to solve many health care problems and improve health, integrated approach of health, social science, and humanities is needed.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.22 no.5
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• pp.1159-1168
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• 2012

Control Flow Integrity(CFI) and Control Flow Locking(CFL) prevent unintended execution of software and provide integrity in control flow. Attackers, however, can still hijack program controls since CFI and CFL does not support fine-granularity, context-sensitive protection. In this paper, we propose a new CFI scheme, Source-code CFI(SCFI), to overcome the problems. SCFI provides context-sensitive locking for control flow. Thus, the proposed approach protects software against the attacks on the previous CFI and CFL schemes and improves safety.

• International Journal of Contents
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• v.17 no.1
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• pp.54-60
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• 2021

The aim of this study was to identify factors influencing problem drinking among the Echo Generation in South Korea and provide basic data for early intervention and mediation of problem drinking among the Echo Generation. This descriptive study performed a secondary analysis of raw data from the 2018 Korean National Health and Nutrition Examination Survey and used responses for problem drinking items from 999 Echo Generation participants born between 1979 and 1992. This study comprehensively investigated sociodemographic and health-related factors influencing problem drinking among the Echo Generation. SPSS WIN program (version 26.0) was used for data analysis. Gender (β=-.32, p<.001), education level (β=.10, p=.002), white-collar workers out of job (β=-.09, p=.041), and depression (β=.11, p<.001) were identified as factors that influenced problem drinking among the Echo Generation. Results of this study suggest that in order to prevent problem drinking among the Echo Generation, there should be user-customized prevention education and intervention programs.

• Journal of Veterinary Science
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• v.21 no.4
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• pp.62.1-62.7
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• 2020

A 5-month old Shih Tzu was diagnosed with congenital elbow luxation and uniapical complex angular deformity of the radius. Single radial oblique and dynamic ulnar osteotomies were performed, using patient-specific 3D-printed osteotomy guide. External skeletal fixation was maintained for three weeks to prevent re-luxation of elbow joint. Three months after the surgery, objective gait analysis indicated markedly improved limb function. In addition, radiograph showed improved congruity of elbow joint and appropriate bone healing. In dogs with congenital radial head luxation and concurrent complex angular deformity, a single oblique osteotomy might be a viable option to preserve bone length and correct the luxation of elbow joint.

• Proceedings of the Korean Society of Computer Information Conference
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• 2021.07a
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• pp.639-640
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• 2021

In this paper, we present a simulation program to learn how to deal with crime situations by realizing a virtual environment using VR. Currently, education on various crimes is increasing year by year, but the crime prevention rate is not decreasing. It was developed to help prevent crime by using VR to experience these problems in an environment similar to reality, learn how to use various tools that have not been used directly, and experience virtual experiences through the metaverse.

• International Journal of Computer Science & Network Security
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• v.23 no.6
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• pp.155-161
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• 2023

In the process of remarkable progress in the medical and technical field and activating the role of technology in health care services and applications, and since the safety of medical data and its protection from security violations plays a major role in assessing the security of health facilities and the safety of medical servers Thus, it is necessary to know the cyber vulnerabilities in health information systems and other related services to prevent and address them in addition to obtaining the best solutions and practices to reach a high level of cybersecurity against attackers, especially due to the digital transformation of health care systems and the rest of the dealings. This research is about what cyberattacks are and the purpose of them, in addition to the methods of penetration. Then challenges, solutions and some of the security issues will be discussed in general, and a special highlight will be given to obtaining a safe infrastructure to enjoy safe systems in return.

• Child Health Nursing Research
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• v.30 no.1
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• pp.67-74
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• 2024

Purpose: This study aimed to identify the general characteristics and health behaviors of students with non-therapeutic substance use. Methods: This secondary data analysis used data from the 17th Korea Youth Risk Behavior Web-based Survey (2021). Analyses of the 54,848 adolescents used descriptive statisics, the Rao-Scott χ² test, and logistic regression. Results: The risk factors for substance use among students were anxiety, loneliness, living separately from family, suicidal ideation, e-cigarette use, and high stress. Conclusion: The findings help identify the risk factors for non-therapeutic drug use among adolescents. Since South Korea does not have a drug prevention program for its adolescent population, an educational plan based on these findings could help prevent adolescent substance abuse.

• Journal of Korean society of Dental Hygiene
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• v.11 no.2
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• pp.213-222
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• 2011

Objectives : The purpose of this study is to arrange basic data necessary for education of AIDS and to prevent AIDS on undergraduates' knowledge or attitude toward AIDS. Methods : A self-administered questionnaire survey was used among 350 undergraduates in some of Jeonbuk and Gyeongnam area from September 9, 2009 to December 10, 2009 and then obtained the following results. Results : 1. Information route on AIDS was indicated to be higher in order of school education with 37.1% and TV & newspaper with 31.5% as for the health-related department. The health-unrelated department was indicated to be the highest in TV & newspaper with 67 people(43.8%), and had statistically significant difference(p<0.01). 2. The whole knowledge score on AIDS was indicated to be $12.72{\pm}2.67$ for the health-related department, resulting having been higher than the health-unrelated department with $11.84{\pm}3.30$. There was significant difference(p<0.01). The attitude score on AIDS was indicated to be $4.85{\pm}1.67$ for the health-related department, resulting having been higher than the health-unrelated department with $4.38{\pm}1.58$. There was significant difference(p<0.01). 3. Knowledge and attitude toward general AIDS stood at r=.112(p<0.05), thereby having had positive correlation. Knowledge and attitude toward AIDS infection stood at r=-.220(p<0.01), thereby having had negative correlation. Relationship between the whole knowledge and attitude toward AIDS stood at r=-.105(p<0.05), thereby having had negative correlation. Conclusions : AIDS is exponentially increasing in the whole world and is getting more serious. Even in our country, it is the tendency that the infected are gradually increasing. Health care of AIDS, which is impossible to be fully recovered and has no vaccine, is preferential to prevent infection. A continuous and efficient preventive education program is thought to be necessary for straightening wrong knowledge and prejudice on this by grasping right knowledge and attitude toward AIDS.

• The Journal of Korean Physical Therapy
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• v.26 no.1
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• pp.9-14
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• 2014

Purpose: The purpose of this study was to investigate how different knee alignments (genu varum and genu valgum) affected activations of quadriceps muscles with measurements of onset-time differences between vastus medialis and vastus lateralis during isometric contractions at both 30 and 60 degree knee flexion. Methods: Fifty-two adults (20 genu varum, 12 genu valgum, and 20 control) were enrolled in this study. Subjects with over 4cm distance between knee medial epicondyles were assigned to Genu varum, while subjects with over 4cm distance between ankles medial malleolus were considered as genu valgum group. Surface EMG was used to measure onset time of both vastus medialis and vastus lateralis during isometric contraction at 30 and 60 degree knee flexion. Results: The onset time of vastus lateralis was delayed in genu varum group, and that of vastus medialis was delayed in genu valgum group at both 30 and 60 degree knee flexions. Moreover, onset time difference at $30^{\circ}$ knee flexion between muscles was larger in genu valgum group than genu varum group. Conclusion: Subjects with genu varum or valgum activated quadriceps muscles with different orders pending on flexion degrees. Therefore, when quadriceps training program were planned to prevent pain or deformities, the findings that quadriceps were activated with different orders affected by knee alignments and joint degree at which trainings were performed, must be considered. If the selective training programs of quadriceps femoris are planned to prevent pain or deformities due to poor knee alignments, these should consider the subject's knee alignment condition.