• Journal of Sericultural and Entomological Science
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• v.30 no.1
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• pp.8-19
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• 1988

The objective of the present study was to investigate the behavioral responses of sillkworm (Bombyx mori) larvae to: the dominant effect of walking distace: and the relationships between walking distance and the various economic characters on yellow sheets. The means of walking distances of progeny from F2 and F1 F1 and F2 generations, which was a hybrid between the long and the short walking distances, were shorter than those of parents. This may indicate that the genes for the short walking distances were partially dominant over those for the longwalking. Estimated broad sense heritability of larval walking distance was different for each larval instar, which fell into the range of 52∼84%. Genetic correlation was apparent between walking distances of all larval stages and some economic characters. The number of cocoons per liter and the period from incubation to emergence have shown the positive genetic correlation with walking distances. The cocoon yield, the sing cocoon weight, and the cocoon shell weight have shown to be in the negative correlation with walking distances. No correlation was observed between walking distances of the mature larvae and any economic characters. The analysis by the path coefficient showed negative direct effect of walking distances on the cocoon yield, and positive indirect effect on the single cocoon weight and the cocoon shell weight.

• Polymer(Korea)
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• v.30 no.1
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• pp.64-69
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• 2006

A series of dinuclear half-sandwich titanium complexes with aryloxy substituent at titanium$[(\eta^5-cyclopentadienyl)(aryloxy)TiCl_2]_2[(CH_2)_n]$ (n=3, n=6, n=9) have been successfully synthesized and their styrene polymerization properties have been investigated. All complexes are characterized by $^1H\;NMR,\;^{13}C\;NMR$, elemental analysis, and mass spectrometry. In order to examine the catalytic properties of the dinuclear complexes styrene polymerization has beer conducted in the presence of MMAO. It was found that (i) all the prepared complexes were very effective catalyst for the production of SPS (syndiotactic polystyrene), (ii) the complex with the longest bridge between the two active sites exhibited greatest catalytic activity among the three catalysts, but produced SPS with the smallest molecular weight, (iii) the activities of dinuclear half-titanocens with aryloxy substitution at titanium metal were greater than those of the chloride substituted compounds. These results indicate that not only the nature of the bridge between the two active sites but also the property of substituents at the metal exert a significant influence on the polymerization behaviors of the dinuclear half-titanocene.

• The Journal of Internal Korean Medicine
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• v.28 no.3
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• pp.421-433
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• 2007

Objectives : This study was performed to evaluate the relationships among blood-stasis. cardio-ankle vascular index(CAVI) and cardiovascular risk. Methods : We obtained general characteristics. blood-stasis score and CAVI from 150 stroke patients. Blood-stasis score was evaluated by blood-stasis criteria. Cardiovascular risk (the following. Stuart's risk score) was evaluated by Stuart's risk scoring scale. We divided subjects into a blood-stasis group and a non blood-stasis group by blood-stasis scores. high CAVI and normal CAVI groupsby CAVI. We compared the general characteristics. CAVI (excluded from comparison between high CAVI group and normal CAVI group), Stuart's risk score and blood-stasis score (excluded from comparison between blood-stasis group and non blood-stasis group) between each pair of groups. Pearson correlation analysis was applied to examine the relationship between blood stasis score and CAVI, blood stasis score and Stuart's risk score. CAVI and Stuart's risk score. Results : The blood-stasis group had significantly higher CAVI and Stuart's risk scores than the non blood stasis group. The high CAVI group had significantly higher blood-stasis score and Stuart's risk score than the normalCAVI group. In correlation analysis. there were significant positive relationship between blood stasis score and Stuart's risk score, CAVI and Stuart's risk score. and blood stasis score and CAVI. Conclusions : This study suggeststhat there is a significant relationship among blood stasis,CAVI and cardiovascular risk.

• Fire Science and Engineering
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• v.24 no.2
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• pp.106-113
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• 2010

Fire characteristics can be analyzed more realistically by using more accurate material properties related to the fire dynamics and one way to acquire these fire properties is to use one of the inverse property analyses. In this study the genetic algorithm which is frequently applied for the inverse heat transfer problems is selected to demonstrate the procedure of obtaining fire properties of the solid charring material with relatively simple chemical structure. The thermal decomposition on the surface of the test plate is occurred by receiving the radiative energy from external heat sources, and in this process the heat transfer through the test plate can be simplified by an unsteady 1-D problem. The inverse property analysis based on the genetic algorithm is then applied for the estimation of the properties related to the reaction pyrolysis. The input parameters for the analysis are the surface temperature and mass loss rate of the char plate which are determined from the unsteady 1-D analysis with a givenset of 8 properties. The estimated properties using the inverse analysis based on the genetic algorithm show acceptable agreements with the input properties used to obtain the surface temperature and mass loss rate with errors between 1.8% for the specific heat of the virgin material and 151% for the specific heat of the charred material.

• KSBB Journal
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• v.18 no.3
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• pp.190-196
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• 2003

An analytical system detecting DNA particularly utilizing a concept of membrane strip chromatography initially applied to home-version tests for, such as, pregnancy and ovulation has been developed. We have chosen S. typhimurium as model analyte among food-contaminating microorganisms that occurred in high frequencies, and invA gene, as a detection target, specific to Salmonella species. This gene was able to be amplified by PCR under optimal conditions employing newly designed primers in our laboratory. The PCR product was specifically measured via hybridization between the analyte and a DNA probe, which was a totally different feature from the conventional gel electrophoresis detecting the products based only on the molecular size. It is notable thar the DNA probe sequence was specially designed such that no separation of excess primers present after PCR was required. This was immobilized on a nitrocellulose (NC) membrane via streptavidin-biotin linkage minimizing a steric effect when the hybridization with the amplified DNA took place. The analyrical system detected the microorganism in a concentration of minimum $10^3$ cfu/mL (i.e., 10 cells per system), estimated from the standard curve, 20 to 40 minutes after adding the sample. This sneitivity was approximately 10 times higher than that of gel electrophoresis as an analytical tool conventionally used. Furthermore, the assay was able to be run at room temperature, which would ofter an extra advantage to users.

• The korean journal of orthodontics
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• v.38 no.4
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• pp.283-298
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• 2008

Objective: The purpose of this study was to investigate changes in the mandibular dental arch from presurgical orthodontic treatment and orthognathic surgery, and to evaluate the relationships between the pretreatment records and changes of mandibular dental arch in skeletal Class III malocclusion individuals. Methods: Lateral cephalometric radiographs and mandibular study models of 31 adults with skeletal class III malocclusion were taken and measured. All measurements were evaluated statistically by ANOVA, Scheffe's Post Hoc, and paired t-test, and correlation coefficients were evaluated. Results: No significant difference in Mn-LMMC, Mn-LIE, Mn-MnOcc was detected between pretreatment and presurgical groups. Statistically significant but low correlations were demonstrated between the initial arch length discrepancy (ALD) and change in ICW, IPW1 (r = 0.492, 0.615) and change in arch length (r = 0.641). No association was seen between the initial depth of curve of Spee and change in mandibular incisor angle and arch width or arch length. Regression analysis showed that the amount of change for arch length and IPW1 could be explained by 64.0% and 75.8% of the pretreatment variables respectively. Conclusions: This study suggests that orthognathic surgery results can be predictable by measuring the pretreatment records.

• Journal of the Korean Society of Marine Environment & Safety
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• v.20 no.5
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• pp.511-525
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• 2014

Goal of this study is estimating of validity of calculated vertical diffusion coefficient for Masan bay is semi-enclosed bay by using eco-hydrodynamic model that is used to analysis of physical structure of coastal waters and calculates the vertical diffusion coefficient. physical structure of coastal waters is calculated by EFDC model, vertical diffusion coefficient calculated as the density gradient is bigger, the vertical diffusion coefficient as density gradient is increases, the vertical diffusion coefficient is decreased. Validity of vertical diffusion coefficient estimated by reproducibility of concentration of dissolved oxygen that calculated in ecosystem model is constructed by Stella program. The Results of model in 2008~2009 were $R^2$ value of 2008 is 0.529~0.700 and $R^2$ value is 0.542~0.791. This results were similar to observed data and simulated to hypoxia at that time. The 'vertical diffusion coefficient' represents stratification and physical stable of a water body, and will be useful for prediction of Hypoxia outbreak.

• Journal of the Korean Society of Marine Environment & Safety
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• v.25 no.1
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• pp.45-57
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• 2019

The resident characteristics of land-based pollutants were analyzed to manage the pollution sources affecting Suyeong Bay. These characteristics were analyzed using a hydrodynamic model and particle tracking model. Pollutants were represented by particles, and the amount of particles and pollutants was represented proportional. The resident characteristics were analyzed by comparing the amount of pollutant load, resident pollutants, and the ratio of resident pollutants remaining in the bay relative to the incoming load for each the of pollution sources. The order of the pollution sources was as follows, according to the amount of resident pollutants at Suyeong Bay. the Suyeong WasteWater Treatment Plant(WWTP), Nambu WWTP, Suyeong river and so on. The amount of resident pollutants was smaller for small load farther away from the interior of bay. Nambu WWTP had the greatest load among the pollution sources, but it showed the smallest ratio of pollutants remaining in the bay relative to incoming load among the pollution points. The result indicates that pollutants affect sea areas differently according to the characteristics each area and the topographic characteristics of pollution sources.

• Journal of Korea Entertainment Industry Association
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• v.14 no.3
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• pp.181-190
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• 2020

Asura: The City of Madness, which was released in 2017, attracted great attention even prior to its release with the combination of Director Kim Sung-su, and actors, Jung Woo-sung, Hwang Jung-min, Ju Ji-hoon and Kwak Do-won. Faithful to its genre as a crime film of film noir, Asura: The City of Madness created multi-layered issues by the overthrow of the archetypal hero character and variation of the heroic narrative structure drew diverse interpretations among both critics and viewers alike. This study aims at analyzing the heroic narrative structure of Asura: The City of Madness based on Christopher Vogler's "The Hero's Journey" and examining how the universality and typicality of narrative structures as mentioned by Vogler are applied to this film. Although the universal and typical characteristics of all narrative structures cannot be analyzed through Christopher Vogler's The Hero's Journey, five atypical characteristics could be derived from this film that deviate from the universality mentioned by Christopher Vogler by looking at the characteristics of the heroic narrative structure implemented as Han Do-kyung, the leading character and a "hero," proceeds through the 12 stages. This study examines which variations such atypical characteristics brought to the heroic narrative structures in crime films what has changed in audiences' expectations, and how it could work as an alternate narrative.

• The Journal of the Society of Stroke on Korean Medicine
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• v.11 no.1
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• pp.1-8
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• 2010

Objectives : We designed this study to investigate difference of heart rate variability(HRV) according to sex, age, acute or chronic phase, category of stroke, national institute of health stroke scale(NIHSS), lesion of stroke. Methods : 64 subjects were recruited from the patients admitted to the department of oriental medicine at East-West Neo Medical Center, Kyung Hee University from 1 September 2009 to 31 August 2010. We compared heart rate(HR), standard deviation of all normal P-P intervals(SDNN), low frequency(LF), high frequency(HF), LF/HF ratio. Results and Conclusions : 1. LF/HF ratio is significantly different between over-70 and below-70 of age. 2. SDNN is significantly different between acute and chronic stroke patients. 3. In sex, category of stroke, national institute of health stroke scale(NIHSS), lesion of stroke, there are no significantly different among the any values of heart rate variability(HRV).