• 365 Citations
  • 10 h-Index
19982019
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Research Output 1998 2019

  • 365 Citations
  • 10 h-Index
  • 27 Article
  • 1 Review article
2019

Discrimination of phthalate species using a simple phage-based colorimetric sensor in conjunction with hierarchical support vector machine

Seol, D., Jang, D., Oh, J. W., Cha, K. J. & Chung, H., 2019 Mar 1, In : Environmental research. 170, p. 238-242 5 p.

Research output: Contribution to journalArticleResearchpeer-review

Bacteriophages
phthalate
Support vector machines
Color
sensor

Recovery of signal loss adopting the residual bootstrap method in fetal heart rate dynamics

Lee, S. K., Park, Y. S. & Cha, K. J., 2019 Jan 1, In : Biomedizinische Technik. 64, 2, p. 157-161 5 p.

Research output: Contribution to journalArticleResearchpeer-review

Recovery
Time series
Mean square error
Entropy
Health
2018
2 Citations (Scopus)

Classification of acoustic noise signals using wavelet spectrum based support vector machine

Cha, K. J., Yoo, K. H., Lee, C. U., Mun, B. M. & Bae, S. J., 2018 Jun 1, In : Journal of Mechanical Science and Technology. 32, 6, p. 2453-2462 10 p.

Research output: Contribution to journalArticleResearchpeer-review

Acoustic noise
Support vector machines
Discrete wavelet transforms
Air conditioning
Spectrum analysis
1 Citation (Scopus)
Laser induced breakdown spectroscopy
laser-induced breakdown spectroscopy
Infrared radiation
Near infrared spectroscopy
Infrared lasers
2015
6 Citations (Scopus)

Robust estimation of support vector regression via residual bootstrap adoption

Choi, W. Y., Choi, D. H. & Cha, K. J., 2015 Jan 1, In : Journal of Mechanical Science and Technology. 29, 1, p. 279-289 11 p.

Research output: Contribution to journalArticleResearchpeer-review

Systems analysis
Design optimization
2013
5 Citations (Scopus)

Development of a new sound quality metric for evaluation of the interior noise in a passenger car using the logarithmic Mahalanobis distance

Jeong, J. E., Yang, I. H., Bin Abu, A., Cha, K. J. & Oh, J. E., 2013 Oct 1, In : Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering. 227, 10, p. 1363-1376 14 p.

Research output: Contribution to journalArticleResearchpeer-review

Passenger cars
Acoustic noise
Acoustic waves
Linear regression
Regression analysis
16 Citations (Scopus)

Random forest as a potential multivariate method for near-infrared (NIR) spectroscopic analysis of complex mixture samples: Gasoline and naphtha

Lee, S., Choi, H., Cha, K. J. & Chung, H., 2013 Sep 1, In : Microchemical Journal. 110, p. 739-748 10 p.

Research output: Contribution to journalArticleResearchpeer-review

Spectroscopic analysis
Complex Mixtures
Gasoline
Infrared radiation
Petroleum refining
2012
5 Citations (Scopus)

Estimating time to full uterine cervical dilation using genetic algorithm

Hoh, J. K., Cha, K. J., Park, M. I., Ting Lee, M. L. & Park, Y. S., 2012 Aug 1, In : Kaohsiung Journal of Medical Sciences. 28, 8, p. 423-428 6 p.

Research output: Contribution to journalArticleResearchpeer-review

Dilatation
Labor Onset
Birth Weight
Logistic Models
Parturition
5 Citations (Scopus)

Random forest as a non-parametric algorithm for near-infrared (NIR) spectroscopic discrimination for geographical origin of agricultural samples

Lee, S., Choi, H., Cha, K. J., Kim, M. K., Kim, J. S., Youn, C. H., Lee, S. H. & Chung, H., 2012 Dec 20, In : Bulletin of the Korean Chemical Society. 33, 12, p. 4267-4270 4 p.

Research output: Contribution to journalArticleResearchpeer-review

Infrared radiation
2011
1 Citation (Scopus)

Trends, probability functions and fuzzy right ideals for d-algebras

Cha, K. J., Kim, H. S. & Neggers, J., 2011 Oct 1, In : Computers and Mathematics with Applications. 62, 8, p. 2988-2994 7 p.

Research output: Contribution to journalArticleResearchpeer-review

Probability function
Algebra
BCK-algebra
Trends
Standards
2010
2 Citations (Scopus)

Choosing a suitable sample size in descriptive sampling

Lee, Y. K., Choi, D. H. & Cha, K. J., 2010 Jun 1, In : Journal of Mechanical Science and Technology. 24, 6, p. 1211-1218 8 p.

Research output: Contribution to journalArticleResearchpeer-review

Sampling
Random variables
Numerical methods
8 Citations (Scopus)

Using combinations of principal component scores from different spectral ranges in near-infrared region to improve discrimination for samples of complex composition

Lee, S., Chung, H., Choi, H. & Cha, K. J., 2010 May 1, In : Microchemical Journal. 95, 1, p. 96-101 6 p.

Research output: Contribution to journalArticleResearchpeer-review

Principal component analysis
Infrared radiation
Chemical analysis
Vibrational spectroscopy
Near infrared spectroscopy
2009
9 Citations (Scopus)

Fetal heart rate after vibroacoustic stimulation

Hoh, J. K., Park, Y. S., Cha, K. J. & Park, M. I., 2009 Jan 1, In : International Journal of Gynecology and Obstetrics. 106, 1, p. 14-18 5 p.

Research output: Contribution to journalArticleResearchpeer-review

Fetal Heart Rate
Gestational Age
Deceleration
Reference Values
Fetus
16 Citations (Scopus)

Improving Raman spectroscopic differentiation of the geographical origin of rice by simultaneous illumination over a wide sample area

Kim, Y., Lee, S., Chung, H., Choi, H. & Cha, K. J., 2009 Feb 1, In : Journal of Raman Spectroscopy. 40, 2, p. 191-196 6 p.

Research output: Contribution to journalArticleResearchpeer-review

Lighting
Raman scattering
Principal component analysis
Lasers
Chemical analysis
2007

A study on the nonlinearity of chaotic signal by bispectral analysis

Lee, H. J., Lee, G. T., Park, Y. S., Cha, K. J., Park, M. I. & Oh, J. E., 2007 Jan 1, In : Transactions of the Korean Society of Mechanical Engineers, A. 31, 8, p. 817-825 9 p.

Research output: Contribution to journalArticleResearchpeer-review

Difference equations
Power spectrum
Chaos theory
Frequency bands
Logistics
12 Citations (Scopus)

Chaotic indices and canonical ensemble of heart rate patterns in small-for-gestational age fetuses

Hoh, J. K., Park, Y. S., Cha, K. J., Oh, J. E., Lee, H. J., Lee, G. T. & Park, M. I., 2007 Jun 1, In : Journal of Perinatal Medicine. 35, 3, p. 210-216 7 p.

Research output: Contribution to journalArticleResearchpeer-review

Gestational Age
Fetus
Heart Rate
Fetal Heart Rate
Nonlinear Dynamics
2006

Kriging optimal design of an intake system with meta-heuristic methods for reducing noise

Ryu, J. S., Sim, H. J., Chin, C. U., Park, Y. S., Cha, K. J. & Oh, J. E., 2006 Dec 1, In : Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering. 220, 9, p. 1255-1264 10 p.

Research output: Contribution to journalArticleResearchpeer-review

Intake systems
Heuristic methods
Automotive engineering
Noise pollution
Simulated annealing

Kriging with meta-heuristic methods for optimal design to reduce the noise of the engine cooling fan

Sim, H. J., Cha, K. J., Oh, J. E. & Ryu, J. S., 2006 Mar 15, In : JSME International Journal, Series C: Mechanical Systems, Machine Elements and Manufacturing. 48, 3, p. 363-370 8 p.

Research output: Contribution to journalArticleResearchpeer-review

Heuristic methods
Fans
Engines
Cooling
Noise abatement
49 Citations (Scopus)

Profiling of differentially expressed genes in human stem cells by cDNA microarray

Kim, C. G., Lee, J. J., Jung, D. Y., Jeon, J., Heo, H. S., Kang, H. C., Shin, J. H., Cho, Y. S., Cha, K. J., Kim, C. G., Do, B. R., Kim, K. S. & Kim, H. S., 2006 Jun 30, In : Molecules and Cells. 21, 3, p. 343-355 13 p.

Research output: Contribution to journalArticleResearchpeer-review

Oligonucleotide Array Sequence Analysis
Stem Cells
Genes
Adult Stem Cells
Transcriptome
2005
14 Citations (Scopus)

The optimal depth of central venous catheter for infants less than 5 kg

Kim, J. H., Kim, C. S., Bahk, J. H., Cha, K. J., Park, Y. S., Jeon, Y. T. & Han, S. H., 2005 Jan 1, In : Anesthesia and Analgesia. 101, 5, p. 1301-1303 3 p.

Research output: Contribution to journalArticleResearchpeer-review

Central Venous Catheters
Transesophageal Echocardiography
Central Venous Catheterization
Guidelines
Weights and Measures
2004
5 Citations (Scopus)

The optimal design for low noise intake system using kriging method with robust design

Cha, K. J., Chin, C. U., Ryu, J. S. & Oh, J. E., 2004 Sep 1, In : JSME International Journal, Series C: Mechanical Systems, Machine Elements and Manufacturing. 47, 3, p. 873-881 9 p.

Research output: Contribution to journalArticleResearchpeer-review

Intake systems
Noise abatement
Optimal design
2002
45 Citations (Scopus)

Kriging interpolation methods in geostatistics and DACE model

Ryu, J. S., Kim, M. S., Cha, K. J., Lee, T. H. & Choi, D. H., 2002 Jan 1, In : KSME International Journal. 16, 5, p. 619-632 14 p.

Research output: Contribution to journalReview articleResearchpeer-review

Interpolation
Experiments
Computer simulation
Design of experiments
Statistics
22 Citations (Scopus)

Risk factors for epistaxis during nasotracheal intubation

Sim, W. S., Chung, I. S., Chin, J. U., Park, Y. S., Cha, K. J., Lee, S. C. & Kim, Y. C., 2002 Jan 1, In : Anaesthesia and Intensive Care. 30, 4, p. 449-452 4 p.

Research output: Contribution to journalArticleResearchpeer-review

Epistaxis
Intubation
Nose
Surgical Instruments
Obesity
2001
31 Citations (Scopus)

Computerized analysis of fetal heart rate parameters by gestational age

Park, M. I., Hwang, J. H., Cha, K. J., Park, Y. S. & Koh, S. K., 2001 Jan 1, In : International Journal of Gynecology and Obstetrics. 74, 2, p. 157-164 8 p.

Research output: Contribution to journalArticleResearchpeer-review

Fetal Heart Rate
Gestational Age
Fetal Movement
Korea
Reference Values
6 Citations (Scopus)

Nurses' assessment of postoperative pain: Can it be an alternative to patients' self-reports?

Chung, I. S., Sim, W. S., Kim, G. S., Park, S. H., Park, Y-S., Cha, K. J., Park, Y. S., Lim, Y. J., Lee, S. C. & Kim, Y. C., 2001 Jan 1, In : Journal of Korean Medical Science. 16, 6, p. 784-788 5 p.

Research output: Contribution to journalArticleResearchpeer-review

Postoperative Pain
Self Report
Nurses
Pain
Facial Pain
2000
5 Citations (Scopus)

Noise reduction of muffler by optimal design

Oh, J. E. & Cha, K. J., 2000 Jan 1, In : KSME International Journal. 14, 9, p. 947-955 9 p.

Research output: Contribution to journalArticleResearchpeer-review

Noise abatement
Taguchi methods
Atmospheric humidity
Optimal design
Temperature
87 Citations (Scopus)

Thermosoftening treatment of the nasotracheal tube before intubation can reduce epistaxis and nasal damage

Kim, Y. C., Lee, S. H., Noh, G. J., Cho, S. Y., Yeom, J. H., Shin, W. J., Lee, D. H., Ryu, J. S., Park, Y. S., Cha, K. J. & Lee, S. C., 2000 Jan 1, In : Anesthesia and Analgesia. 91, 3, p. 698-701 4 p.

Research output: Contribution to journalArticleResearchpeer-review

Epistaxis
Nose
Intubation
Incidence
Therapeutics
1998
13 Citations (Scopus)

Nonparametric kernel regression estimation near endpoints

Cha, K. J. & Schucany, W. R., 1998 Mar 1, In : Journal of Statistical Planning and Inference. 66, 2, p. 289-304 16 p.

Research output: Contribution to journalArticleResearchpeer-review

Kernel Estimation
Regression Estimation
Kernel Regression
Nonparametric Regression
Biometrics