• Anxiety and mood
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• v.9 no.1
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• pp.38-44
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• 2013

Objective : The end-stage renal disease patients who shared fear of death, functional impairment due to hemodialysis are vulnerable to depression, anxiety and other mental problems. It is possible that their psychiatric characteristics and related autonomic nervous functions have some differences depending on their age. We purpose to find the differences of psychiatric characteristics and related autonomic nervous functions between adult and elderly hemodialysis patients. Methods : Our subjects are end-stage renal disease hemodialysis patients composed of 39 adults (<65 years) and 24 seniors (${\geq}65$ years). Outcome measures included the 17-item Hamilton Rating Scale for Depression, The Hamilton Rating Scale for Anxiety, The Apathy Evaluation Scale and Mini-International Neuropsychiatric Interview by clinician. And subjects fulfilled self-report scale, The Positive thinking scale and The Snaith-Hamilton Pleasure Scale. The autonomic nervous functions are measured by heart rate variability. Results : There are no significant differences in demographic factors between two groups. The 17-item Hamilton Rating Scale for Depression, The Hamilton Rating Scale for Anxiety, The Apathy Evaluation Scale, The Snaith-Hamilton Pleasure Scale and autonomic nervous functions are also not different. But only positive thinking scale is higher in adult hemodialysis group than the elderly (F=5.395, p=0.024). Conclusion : This study compared depression, anxiety and autonomic nervous functions between adult and senior hemodialysis patients. There are no significant differences in psychiatric characteristics and autonomic nervous functions between two groups except positive thinking traits. Senior patients endured their chronic disease similar to adult patients did in spite of their old age. This result suggests that elderly's higher positive thinking traits affect their endurances about the negative situations.

• The Journal of Internal Korean Medicine
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• v.29 no.1
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• pp.1-11
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• 2008

Objectives : Essential hyperhidrosis is a socially and occupationally disabling disorder. There are many suggestions that hyperhidrosis is associated with the autonomic nervous system. This study was designed to investigate the autonomic nerve system the patients with hyperhidrosis. Methods : 348 palmar and plantar hyperhidrosis patients and 20 systemic hyperhidrosis patients in the ambulatory care were investigated. All patients were inspected at the first medical examination, using the PSA of HRV. HRV was measured for 5 minutes after 5 minutes' bed rest. We checked the frequency domain analysis of HRV (i.e. TP, VLF, LF, HF and LF/HF) which were transformed into natural logarithm of patients against the standard measures of the HRV components. Then, we compared the means of patients with means and highest values of in the normal range of Koreans 1) between the patients with palmar and plantar hyperhidrosis and the healthy controls and 2) between the patients with the systemic hyperhidrosis and healthy controls, by the frequency domain analysis of heart rate variability (HRV), respectively. We then compared the results between 1) and 2). Results : The values of natural logarithmic measures of LF/HF ratio in the patients with palmar and plantar hyperhidrosis we examined were significantly higher than the values of healthy controls, but those in the patients with systemic hyperhidrosis were not higher. Conclusion : This study suggests that the autonomic nervous function did not simply increase but that the balance between sympathetic and parasympathetic nervous function did matter in patients with palmar and plantar hyperhidrosis. This balance included that the sympathetic nervous function aggravated comparatively with parasympathetic nervous function. On the other hand, we couldn't find any significance of the patients with the systemic hyperhidrosis as for the autonomic nervous function.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2012.05a
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• pp.1195-1196
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• 2012

• Electronics and Telecommunications Trends
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• v.32 no.1
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• pp.25-34
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• 2017

무선통신, 이동통신 및 사물인터넷 기술의 발달에 힘입어 인터넷의 규모와 복잡도는 해마다 증가하고 있으며, 망의 제어와 관리의 복잡도 역시 함께 증가할 것으로 예상된다. 이에 따라 운용자(operator)가 담당하던 제어와 관리를 망이 스스로 수행하는 자율네트워킹(autonomic networking) 기술이 등장하게 되었다. 초기의 자율네트워킹 연구는 자가관리(self-management)를 위한 프레임워크를 개발하는 것에 중점을 두었으나, 이후에는 SDN/NFV 기반 플랫폼에 기계학습 기술을 접목함으로써, 유연성이 확보된 망에 지능화된 제어 및 관리를 제공하는 방향으로 진화하고 있다. 본고에서는 자율네트워킹에 관한 최근의 연구동향을 소개한다.

• Proceedings of the KOSOMBE Conference
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• v.1991 no.11
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• pp.113-118
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• 1991

Hypertension is a medical problem with no permanent cure. Extended hypertension can cause various cardio vascular diseases, cerebral vascular diseases, and circulatory system trouble. Medical treatment at present does not consider circadian variation of blood pressure in patients ; therefore, the problem of over-reduction of blood pressure through drugs sometimes occurs. This paper presents a prediction model of circadian variation or moon blood pressure employing the endocrine grand and the autonomic nervous system.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2002.11a
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• pp.279-282
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• 2002

자율신경계 반응은 인간의 각성을 측정하는 변수가 될 수 있다(황민철 외, 2001). 본 연구에서는 자율신경계 반응만으로 인간의 2차원 감성 분류를 할 수 있는지를 살펴보았다. 5명의 피험자에게 대중가요나 효과음 등과 같은 다양한 청각자극을 제시하여 감성을 유발한 후, 자율신경계의 반응을 3가지 생리신호(GSR, SKT, PPG)를 통해 측정하여 반응 패턴을 분석하였다. 결과적으로, 자율신경계 반응 패턴은 각성/이완뿐만 아니라 쾌/불쾌간 감성 구분의 가능성을 확인할 수 있었다.

• Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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• 2003.05a
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• pp.22-26
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• 2003

This paper presents a genetic algorithm based autonomic movement algorithm for an autonomous underwater vehicle(AUV) and verified it to simulation. Also, developed program that can do simulation on two dimension and three dimension in seabed environment. The presented algorithm is applicable to a escape from the recursive search and a development of obstacle avoidance system.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.21 no.2
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• pp.142-153
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• 2008

Objective : Etiologically, stress is a important factor to immune system and skin disease. Human body is controled to keep his homeostasis from stress by autonomic nerve system. So we investigated autonomic nerve balance and stress level of patients with skin disease by heart rate variability(HRV) test. Research Methods and Procedures : Fifty two patient(from 15 years old to 35 years old) who visited Dept. of Oriental medical Dermatology, Kyunghee university at first and had an examination by HRV test, were selected as the subject of our study. We checked items of HRV test(such as SDNN, RMSSD, VLF, LF, HF, TP, norm-LF, norm-HF, LF/HF ratio, LnHF and LnHF), and analyzed time and frequency domain by sex, age, onset, color on end of patient's tongue, sweating and sleep condition. Results and Conclusion : Men showed significant higher SDNN, RMSSD, LF, norm-LF, norm-HF, LF/HF ratio, LnLF and LnHF than women(p <0.05). Patients who were attacked by skin disease within 6 months, showed significant higher TP and VLF than over 6 months(p <0.05). Patients with normal color on the end of their tongue showed significant higher TP and VLF than with flare color. We analyzed correlation to color on the end of tongue and RMSSD. Prevalence risk(RMSSD <20ms) in the case of normal color on the end of tongue was 5 times as high as in the case of flare color(p <0.1). And we analyzed correlation to age and LF/HF ratio. Prevalence risk(LF/HF ratio <1) of patients from 15 years old to 25 years old was 1.467 times as high as from 26 years old to 35 years old(p <0.1).

• The Journal of Korean Obstetrics and Gynecology
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• v.20 no.4
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• pp.101-110
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• 2007

Purpose: Oligomenorrhea is clinically important because it can be progressed to amenorrhea. The purpose of this study is to analyse Autonomic Nerve Function of some oligomenorrheic patients by using HRV(Heart Rate Variability). Methods: We studied 35 patients visiting OO Oriental Hospital from 1st November 2006 to 31th May 2007. One woman who takes antidepressant is excluded. 17 oligomenorrheic group and 17 normal menstrual cycle group were compared with HRV. The SPSS 12.0 for windows was used to analyze the data and Mann Whitney U-test were used to verify the results. Results: Mean PR, LF norm, LF/HF ratio of oligimenorrheic group are higher than normal menstrual cycle group. But there is no statistically significance. SDNN, RMS-SD, ln TP, ln VLF, ln LF, ln HF, HF norm of oligimenorrheic group are lower than normal menstrual cycle group. But there is no statistically significance. Conclusion: It can be suggested that oligomenorrhea can be related to increased activities of sympathetic nerve and decreased activities of general autonomic nerve function. But, we need study with more subjects for settling this.

• Journal of Acupuncture Research
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• v.26 no.5
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• pp.57-63
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• 2009

Objectives : Since the Front Points are treated as response zone, it can be used for the diagnosis and treatment of disease in viscera and bowels. Jeonjung($CV_{17}$) is the Front Point of SIMPO, it is related with cardiovascular, neuro-psychiatrical disease in aspect of Oriental Medicine. This research is for clarifying relations with palpation of the Jeonjung($CV_{17}$) and autonomic nerve system by comparing HRV and SRI(Stress Reaction Index). Methods : This study was proceeded for three months, from June 2009 to September 2009. Among 31 healthy volunteers, 13 subjects who complained the pressure pain around Jeonjung($CV_{17}$) are classified pressure pain group and 18 subjects who had no pain around Jeonjung($CV_{17}$) as normal group. All subjects had their HRV(SA-2000E: Medicore Co..Ltd. Korea) and SRI measured at visit. We studied the difference of HRV between two groups.(Statistics by Student t-test, p<0.05) Results : LF normalization of the pressure pain group were significantly higher than those of the normal group. HF normalization of the pressure pain group were significantly lower than those of the normal group. Compared with those of the normal group, total SRI of the pressure pain group were low but it's not significant. Conclusions : The results of HRV of the pressure pain group show that pressure pain around Jeonjung($CV_{17}$) is related to mental stress and autonomic disturbance.