• 제어로봇시스템학회:학술대회논문집
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• 2001.10a
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• pp.49.3-49
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• 2001

In 1994 Adelman´s pioneer work demonstrated that deoxyribonucleic acid (DNA) could be used as a medium for computation to solve mathematical problems. He described the use of DNA based computational approach to solve the Hamiltonian Path Problem (HPP). Since then a number of combinatorial problems have been analyzed by DNA computation approaches including, for example: Maximum Independent Set (MIS), Maximal Clique and Satisfaction (SAT) Problems. In the present paper we propose a method of solving another classic combinatorial optimization problem - the eraph Coloring Problem (GCP), using specifically designed circular DNA plasmids as a computation tool. The task of the analysis is to color the graph so that no two nodes ...

• Journal of Haehwa Medicine
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• v.25 no.1
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• pp.45-52
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• 2016

Objectives : The purpose of this study is to report the clinical effects of Hominis Placenta Pharmacopunture(HPP) on Vertigo. Methods : A 82-year-old female patient whose chief complaint was Vertigo was treated with Placenta Pharmacopunture at CV6 and GB21, twelves times for a month. Acupuncture and herbal medicine were added depending on the symptoms. Laboratory test was taken and Korean Version of Dizziness Handicap Inventory was examined before and after each treatment. Results : After the treatments, the symptoms were improved. Conclusions : Hominis Placenta Pharmacopuncture may be an efficacious therapy for Iron Deficiency Anemia.

• Journal of Korean Society for Quality Management
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• v.26 no.3
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• pp.71-81
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• 1998

In reliability analysis, the time difference between the expected next failure time and the current failure time or the Mean Time Between Failure(MTBF) is of significant interest. Until recently, in reliability growth studies, the reciprocal of the intensity function at current failure time has been used as being equal to MTBE($t_n$)at the n-th failure time $t_n$. That is MTBF($t_n$)=l/$\lambda (t_n)$. However, such a relationship is only true for Homogeneous Poisson Process(HPP). Tsokos(1995) obtained the upper bound and lower bound for the MTBF($t_n$) and proposed an estimator for the MTBF($t_n$) as the mean of the two bounds. In this paper, we provide the estimator for the MTBF($t_n$) which does not depend on the value of the shape parameter. The result of the Monte Carlo simulation shows that the proposed estimator has better efficiency than Tsokos's estimator.

• International Journal of Reliability and Applications
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• v.1 no.1
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• pp.15-26
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• 2000

This paper considers an aperiodic preventive maintenance (PM) model for repairable systems, in which the time intervals between two consecutive preventive maintenances are unequal. To propose such an aperiodic PM model, we assume that each PM reduces the current hazard rate by a certain amount which depends on the number of PMs performed previously. If the system fails between PMs, the minimal repair is performed and the hazard rate remains unchanged after the repair. We give the exact expressions for the hazard rate function for the aperiodic PM model. Based on the proposed aperiodic PM model, we suggest the maximum likelihood method to estimate the parameters characterizing the model and apply the method to the case of Weibull distribution. Numerical examples for estimating the parameters are presented for the purpose of illustration.

• Proceedings of the KIEE Conference
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• 1993.07a
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• pp.251-253
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• 1993

This paper proposes an automatic tuning fuzzy controller for frequency control of a hydro power plant (HPP). The proposed automatic tuning fuzzy controller consists of fuzzy control part and scaling factor calculation part. Scaling factor tuning is based on the concept of conventional tuning rules for the PI controller. The proposed controller was evaluated by simulation. Good results have been obtained for the 5kW model HHP.

• Research in Community and Public Health Nursing
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• v.14 no.2
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• pp.200-210
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• 2003

Purpose: This quasi-experimental study was performed to investigate the effects of a health promotion program(HPP) on self-efficacy, healthy lifestyle and blood lipid profile in employees with hyperlipidemia. Methods: The subjects were forty-three employees who were diagnosed as having hyperlipidemia during routine health examination at two worksites in Seoul in 2001. Of the forty-three subjects, thirty were allocated to the experimental group and the remaining thirteen were allocated to the control group. Data were collected from September 24, 2001 to March 16, 2002. The HPP was applied to the experimental group for 11 weeks and included health education, diet counseling, watching videos, conference, and so on. The health education included information about exercise, smoking cessation, and abstinence from drinking alcohol and seven sessions of hyperlipidemia education. The experimental group was requested to keep a daily health promotion lifestyle diary. This diary was analyzed by a dietician and subjects were instructed based on the results. As for data analyses, wilcoxon signed rank test and wilcoxon rank sum test and x2-test were carried out using SAS program. Results: 1. Self-efficacy scores of the experimental group were significantly more increased than those of the control group (experimental: 5.86 10.80, control: -4.04 11.91, p=0.018). 2. Healthy lifestyle scores of the experimental group were significantly more increased than those of the control group (experimental: 0.19 0.26, control: -0.05 0.29, p=0.024). 3. Blood total cholesterol values of the experimental group were significantly more decreased than those of the control group (experimental: -13.07 30.10mg/dl, control: 10.00 26.57mg/dl, p=0.033). 4. Blood triglyceride values of the experimental group were significantly more decreased than those of the control group (experimental: -29.17 192.40mg/dl, control: 63.31 107.53mg/dl, p=0.050). Conclusion: These findings indicate that the HHP could be effective in improving self-efficacy, healthy lifestyle and blood HDL cholesterol and decreasing blood total cholesterol in employees with hyperlipidemia. Therefore, the HHP could be suggested as an effective nursing intervention for employees in the worksite by ultimately preventing cerebral and cardiac vessel complications related to hyperlipidemia.

• The Korean Journal of Food And Nutrition
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• v.24 no.4
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• pp.746-752
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• 2011

In the manufacture of baby food in the form of semi-solid to give the most suitable rheological properties to select thickener, 4% of rice flour, modified starch 1 and modified starch or 0.3% pectin added to baby food. After 3 minutes at a pressure 550 MPa high pressure processing(HPP), sensory evaluation conducted to measure the viscosity results, the addition of rice flour, baby food bananas and apples all the color, texture, flow properties and high affinity for most commercial baby food as well as the most likely to show the viscosity of semi-solid state in the manufacture of baby food there were rice flower most suitable. The baby food that 4%, 6% and 8% of rice flower added as thickener were high pressure processing at 450 MPa and 550 MPa pressure and 1, 3 and 5 min conditions. In results, the higher added percentage of rice flower, the viscosity and lightness were increased, pH and sugar content were not significantly different from. In addition, ultra-high pressure processing conditions and the processing time for a change in pressure due to the increase is not significantly different. Because of high-pressure processing does not significantly affect the physical properties of the baby food, consideration of the economy and gelatinization degree, high-voltage processing conditions for the manufacture of baby food 550 MPa, 3 min was considered the most suitable processing conditions.

• Journal of the Korean Society of Food Science and Nutrition
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• v.43 no.9
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• pp.1423-1430
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• 2014

This study investigated the effects of superheated steam (SHS) and high hydrostatic pressure (HHP) on the quality of Galbijjim. SHS cooking increased moisture and crude fat contents and decreased crude protein contents (P<0.05). The value of L was significantly higher upon SHS cooking compared to conventional cooking (CC), whereas a and b values were not significantly different among the samples. Hardness decreased more upon CC than SHS. The results of the safety storage experiment at refrigeration temperature showed that the total number of bacteria was lower in SHS-HHP than in CC-HHP. The thiobarbituric acid value increased to 0.70~1.56 mg malonaldehyde (MA)/kg in CC-HHP after 15 days, and SHS-HHP showed 0.69 (0 day)~1.24 (15 days, $10^{\circ}C$) mg MA/kg. Volatile basic nitrogen value was 18.07~36.76 mg% in CC-HHP, and that in SHS-HHP also increased to 17.06 (0 day)~35.76 mg% (15 days, $10^{\circ}C$). Overall, SHS cooking and HHP reduced microorganisms, which could improve product quality and sanitation.

• Polymer(Korea)
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• v.36 no.4
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• pp.440-447
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• 2012

The branched copolyester was synthesized and its molecular weight, $T_g$, 1/2 method temperature ($T_{1/2}$) and rheological properties were characterized for the application of toner binder. The linear copolyester had low molecular weight and melt elasticity obtained by dimethylterephthalate (DMT), ethylene glycol (EG) and 2,2-bis(4-(2-hydroxypropoxy) phenyl)propane (HPP). The branched copolyesters prepared with various branching agents such as 2-(hydroxymethyl)-2-ethylpropane-1,3-diol (trimethylol propane, TMP), 2,2-bi(hydroxymethyl)-1,3-propanediol (pentaerythritol, PER), 1,2,4-benzenetricarboxylic anhydride (trimellitic anhydride, TMA) and glycerol to improve the physical properties of the linear copolyester. The effect of branching agents on the molecular weight and melt elasticity of the branched copolyester was examined. The branched copolyesters prepared by adding over 15 mol% of branching agent showed relatively high molecular weight and melt elasticity, and $T_{1/2}$ value of $140^{\circ}C$. Therefore, the highly branched copolyesters were deemed suitable as a hot-melt toner of laser print process.

• Journal of The Korean Association For Science Education
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• v.23 no.4
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• pp.419-429
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• 2003

The developments of science education until the middle of the 20th century were often driven by personal ideas and achievements of some influential individual scientists (e.g. T. H. Huxley, H. E. Armstrong. L. Hogben, J. Conant). while that of the 2nd half of the 20th century can be characterized as collective efforts through various research grou ps of science educators (e.g. PSSC, HPP, Nuffield, SATIS). In this respect, John Tyndall(1820-1894), a physicist of the Victorian England best known as Tyndall's Effect, can be considered as one of the great scientists who made a big influence on science teaching and the popularization of science before science secured its place in school curricula. Tyndall worked as a research scientist at the Royal Institution of London, where various lectures and demonstrations of physical sciences were regularly performed for general public, and he was particularly famous for his fascinating physics demonstrations. In this study, we summarize his activities and achievements as a teacher as well as a popularizer of physics, illustrate some of his famous demonstrations and his ideas concerning physics teaching and discuss their implications to today's physics education.