- Nonlinear Cardiac Dynamics and Morning Dip: An Unsound Circadian Rhythm
-
Yum MK, Kim NS, Oh JW, Kim CR, Lee JU, Kim SK, Lee CB, Noh CI, Choi JY, Yun YS
- KMID: 1858136
- Korean Circ J.
- 1998 Mar;28(3):382-393.
- doi: 10.4070/kcj.1998.28.3.382
OBJECTIVES: We studied the circadian rhythm of nonlinear heart rate dynamics in healthy subjects. BACKGROUND: The frequency of sudden cardiac death increases in the morning. The relationship between decreased complexity... -
- CITED
-
- Close
- SHARE
-
- Close
- Nonlinear Dynamic Analysis Using Lyapunov Exponent of EEG in Patients with Schizophrenia
-
Kim DJ, Pae CU, Jeong J, Chae JH, Kim SY, Go HJ, Paik IH
- KMID: 2286972
- Korean J Psychopharmacol.
- 1998 Apr;9(1):67-72.
OBJECT: It seemed worthwhile to estimate nonlinear measures of the electroencephalogram (EEG) in schizophrenic patients, because nonlinear measures might serve as indicators of the specific brain function in schizophrenia. METHOD: Previous... -
- CITED
-
- Close
- SHARE
-
- Close
- Nonlinear Dynamic Analysis in EEG of Alzheimer's Dementia: A Preliminary Report Using Correlation Dimension
-
Chae JH, Kim DJ, Jeong J, Kim SY, Go HJ, Paik IH
- KMID: 1944947
- J Korean Soc Biol Psychiatry.
- 1997 Jun;4(1):67-73.
The changes of electroencephalogram(EEG) in patients with dementia are most commonly studied by analyzing power or magnitude in certain traditionally defined frequency bands. However because of the absence of on... -
- CITED
-
- Close
- SHARE
-
- Close
- Nonlinear Dynamic Analysis of EEG in Patients with Positive and Negative Schizophrenia
-
Chae JH, Pak EJ, Kim DJ, Jeong JS, Kim SY, Kim KS
- KMID: 2317311
- Sleep Med Psychophysiol.
- 1998 Dec;5(2):185-193.
OBJECTIVES: The hypothesis that the brain is a nonlinear dynamical system exhibiting deterministic chaos has offered new perspectives to the investigation of information processing in the brain of schizophrenic patients.... -
- CITED
-
- Close
- SHARE
-
- Close
- A preliminary Study for Nonlinear Dynamic Analysis of EEG in Patients with Dementia of Alzheimer
-
Chae JH, Kim DJ, Choi SB, Bahk WM, Lee CT, Kim KS, Jeong JS, Kim SY
- KMID: 1834626
- J Korean Soc Biol Psychiatry.
- 1998 Jun;5(1):95-101.
The changes of electroencephalogram(EEG) in patients with dementia of Alzheimer's type are most commonly studied by analyzing power or magnitude in traditionally defined frequency bands. However because of the absence... -
- CITED
-
- Close
- SHARE
-
- Close
- Symbolic Analysis of Heart Rate Dynamics before the Spontaneous Onset of Paroxysmal Atrial Fibrillation
-
Park KT, Shin DG, Yi SH, Park JS, Hong GR, Kim YJ
- KMID: 2227190
- Korean Circ J.
- 2004 Oct;34(10):953-962.
- doi: 10.4070/kcj.2004.34.10.953
BACKGROUND AND OBJECTIVES: Heart rate variability (HRV) analysis, by conventional measures, for predicting the risk of atrial fibrillation (AF) has inherent shortcomings. Recently, nonlinear HRV analysis methods have been developed... -
- CITED
-
- Close
- SHARE
-
- Close
- Development of a Quantitative Model on Adolescent Cyberbullying Victims in Korea: A System Dynamics Approach
-
You MJ, Ham EM
- KMID: 2456144
- J Korean Acad Nurs.
- 2019 Aug;49(4):398-410.
- doi: 10.4040/jkan.2019.49.4.398
PURPOSE: This study used a system dynamics methodology to identify correlation and nonlinear feedback structures among factors affecting adolescent cyberbullying victims (CV) in Korea and to construct and verify a... -
- CITED
-
- Close
- SHARE
-
- Close
- Decreased Nonlinear Coupling of Peripheral Blood Volume to Heart Rate in Preterm Infants
-
Park EY, Kim CR, Yum MK
- KMID: 1654696
- Korean J Pediatr.
- 2004 Apr;47(4):386-391.
PURPOSE: We investigated the autonomic nervous and complex modulation of heart rate and peripheral blood volume, and linear and nonlinear coupling between heart rate and peripheral blood volume in full-term... -
- CITED
-
- Close
- SHARE
-
- Close
- Approximate Entropy: Analysis of Fetal Heart Rate Variability in Normal and Growth Retarded Fetuses
-
Hwang JH, Park MI, Yum MK
- KMID: 2260716
- Korean J Obstet Gynecol.
- 1997 Jan;40(1):92-99.
OBJECTIVES: This study is aimed to quantify the complex dynamics of beat-to-beat fetal heart rate(FHR) fluctuations by using approximate entropy(ApEn) which is a recently developed mathematical formula quantifying regularity and... -
- CITED
-
- Close
- SHARE
-
- Close
- Nonlinear Dynamics of EEG in Pilocarpine-induced Status Epilepticus
-
Jung KY, Kim JM, Kim TW, Park HD, Kim DW
- KMID: 2343062
- J Korean Neurol Assoc.
- 2003 Oct;21(5):507-512.
BACKGROUND: Pilocarpine-induced status epilepticus (SE) model shows stereotypic EEG changes and behavioral characteristics. Although neuronal damages and therapeutic responses are also dependent on SE stages, the dynamical aspect of underlying... -
- CITED
-
- Close
- SHARE
-
- Close
- Non-linear System Dynamics Simulation Modeling of Adolescent Obesity: Using Korea Youth Risk Behavior Web-based Survey
-
Lee H, Park ES, Yu JK, Yun EK
- KMID: 2363097
- J Korean Acad Nurs.
- 2015 Oct;45(5):723-732.
- doi: 10.4040/jkan.2015.45.5.723
PURPOSE: The purpose of this study was to develop a system dynamics model for adolescent obesity in Korea that could be used for obesity policy analysis. METHODS: On the basis of... -
- CITED
-
- Close
- SHARE
-
- Close
- Model for Unplanned Self Extubation of ICU Patients Using System Dynamics Approach
-
Song YG, Yun EK
- KMID: 2359866
- J Korean Acad Nurs.
- 2015 Apr;45(2):280-292.
- doi: 10.4040/jkan.2015.45.2.280
PURPOSE: In this study a system dynamics methodology was used to identify correlation and nonlinear feedback structure among factors affecting unplanned extubation (UE) of ICU patients and to construct and... -
- CITED
-
- Close
- SHARE
-
- Close
- Nonlinear Dynamic and Chaotic Analysis of Fetal Heart Rate in Fetal Distress
-
Kim SJ, Shin JC, Chung DY, Sim YB, Yi SH, Kim CY, Kim SP
- KMID: 2261990
- Korean J Obstet Gynecol.
- 2000 Jun;43(6):1071-1079.
OBJECTIVES: For estimating the antenatal fetal wellbeing to develop new analysis method of fetal heart rate(FHR) with electronic Fetal Heart Rate Monitoring(eFHRM) and computer. METHODS: Heart rate signal is received from distressed... -
- CITED
-
- Close
- SHARE
-
- Close
- Analysis of Heart Rate Variability in Preoperative Diabetic Patients by Linear and Nonlinear Dynamics
-
Min SW
- KMID: 1936176
- Korean J Anesthesiol.
- 2001 Aug;41(2):133-139.
- doi: 10.4097/kjae.2001.41.2.133
BACKGROUND: The aim of this study was to investigate the underlying changes in heart rate variability (HRV) of preoperative diabetic patients using five analytical methods; SDNN (standard deviation of... -
- CITED
-
- Close
- SHARE
-
- Close
- Fractal and Complexity Measures of Heart Rate Dynamics in Patients with Normal and Left Ventricular Dysfunction: The Role of New Noninvasive Markers for Cardiac Risk Stratification
-
Shin DG, Ryu CS, Park KT, Yi SH, Hong GR, Park JS, Kim YJ, Shim BS, Kim U, Lee SH
- KMID: 1859067
- Korean Circ J.
- 2006 Aug;36(8):583-592.
- doi: 10.4070/kcj.2006.36.8.583
BACKGROUND AND OBJECTIVES: The traditional indexes of heart rate (HR) variability may lack the ability to detect subtle, but important changes in HR behavior. Nonlinear heart rate variability (HRV) analysis... -
- CITED
-
- Close
- SHARE
-
- Close
- Development of Computerized Tools for Nonlinear Analysis of EEG
-
Choi YJ, Han WS, Choi KG
- KMID: 2352864
- Ewha Med J.
- 2003 Jun;26(2):121-132.
- doi: 10.12771/emj.2003.26.2.121
OBJECTIVES: EEG is a record of electronic signals of brain. If there are effective methods for analysis of EEG signal it can be used as a diagnostic tool for diseases... -
- CITED
-
- Close
- SHARE
-
- Close
- Changes of Heart Rate Variability during Anesthesia in Hypertensive Patients by Nonlinear Dynamics
-
Lim YJ, Kim HS, Yeom JH, Shin WJ, Kim YC, Lee DH, Yum MG
- KMID: 2091224
- Korean J Anesthesiol.
- 1998 Jun;34(6):1186-1192.
- doi: 10.4097/kjae.1998.34.6.1186
BACKGROUND: Heart rate variability (HRV) is characterized by a variety of linear, non-linear, periodic and non-periodic oscillations. The aim of the present study was mainly to investigate the characteristics of... -
- CITED
-
- Close
- SHARE
-
- Close
- A simple nonlinear model for estimating obturator foramen area in young bovines
-
Pares-Casanova PM
- KMID: 1991773
- Korean J Vet Res.
- 2013 Jun;53(2):73-76.
The aim of this study was to produce a simple and inexpensive technique for estimating the obturator foramen area (OFA) from young calves based on the hypothesis that OFA can... -
- CITED
-
- Close
- SHARE
-
- Close
- Local Dynamic Stability Associated with Load Carrying
-
Liu J, Lockhart T
- KMID: 2317081
- Saf Health Work.
- 2013 Mar;4(1):46-51.
OBJECTIVES: Load carrying tasks are recognized as one of the primary occupational factors leading to slip and fall injuries. Nevertheless, the mechanisms associated with load carrying and walking stability remain... -
- CITED
-
- Close
- SHARE
-
- Close
- Mitochondrial Toxins and Healthy Lifestyle Meet at the Crossroad of Hormesis
-
Lee YM, Lee DH
- KMID: 2460950
- Diabetes Metab J.
- 2019 Oct;43(5):568-577.
- doi: 10.4093/dmj.2019.0143
Mitochondrial function is crucial for the maintenance of cellular homeostasis under physiological and stress conditions. Thus, chronic exposure to environmental chemicals that affect mitochondrial function can have harmful effects on... -
- CITED
-
- Close
- SHARE
-
- Close
