• KSCE Journal of Civil and Environmental Engineering Research
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• v.29 no.2D
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• pp.275-286
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• 2009

As a government building transferred to the outskirts of a city, it's easy to foresee a doughnut effect from advancement process of the city. In the case of Busan city comparing different cities a doughnut effect is being advanced seriously. To the access method for a city center activation the possibility which there will be a various branch, but in this research we analyzed factors of the stagnation in the public Government building neighboring area. And then made a proposal for the city activation plan by transferring the public Government building, analyze influence to surrounding areas using factor analysis. Hence, the object of this paper is to propose a plan for the activation of existig city and evaluates it which is presented consequently. In the case of Dongrae government office, a problem of the neighboring area and condition of present were surveyed and causes of the stagnation in existing city analyzed. Consequently the important five factors were extracted as follows; 1) historical and the cultural factor, 2) factor of creating the special street, 3) urban planning factor, 4) factor of transferring government office.

• The Journal of Engineering Geology
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• v.10 no.3
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• pp.247-261
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• 2000

The geostatistical analyses for the chemical components of pH, TS, KMnO4 Demand, Cl, SO$_4$ and NO$_3$-N are carried out to understand the groundwater contamination in Pusan. The average values of each component are 7.2 for pH, 336.4mg/$\ell$ for TS, 2.3mg/$\ell$ for KMnO$_4$ Demand, 44.3mg/$\ell$ for Cl, 36.0mg/$\ell$ for SO$_4$, and 4.6mg/$\ell$ for NO$_3$-N. The ratios over the drinking standard of each component are 0.34% for pH, 2.27% for TS, 1.55% for KMnO$_4$ Demand, 1.59% for Cl, 0.57% for SO$_4$, and 3.7% for NO$_3$-N. The highest ratio of NO$_3$-N results from the municipal sewage and exhaust gas of vehicles. The isopleth maps of 6 chemical components show that the high values of groundwater contamination come from the inland of Pusan, and that some high values appear at the coastal area. The isopleth maps of Cl and SO$_4$ related with seawater intrusion also show that the high values appear only at the particular coastal area, not at the whole area. On the isopleth maps of Cl and SO$_4$, the anomalies of the concentration contours were compared with the directions of two large fault zones, the Ilkwang Fault and the Dongrae Fault. Apparently, they don't have the particular correlation. Therefore, it is concluded that the main source of groundwater contamination in Pusan is not the seawater, but the municipal sewage and other sources such as the exhaust gas of vehicles, the contaminated surface water, the waste water of factories, and the leachate of waste landfills.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.17 no.4
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• pp.271-279
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• 1984

Effects of temperature and additives on the stability of actomyosin extracted from skeletal muscle of Israeli carp, Cyprinus carpio nudus, were studied by analyzing free SH-group, ATP-sensitivity and Ca-ATPase activity. The used additives were sucrose, sorbitol, Na-glutamate and L-cysteine. Furthermore, the denaturation constant($K_D$), protective effect(${\Delta}E/M$) and the other thermo-dynamic parameters on protein denaturation are systematically discussed. The actomyosin showed $4.12{\sim}4.68 mg/ml$ in protein concentration, $2.63{\sim}2.93\%$ in ribonucleic acid to the protein, $1:2.20{\sim}2.63$ in the binding ratio of myosin and actin, $4.33{\sim}5.26\%$ in fat content, 109.78 in ATP-sonsitivity, $0.159{\sim}0.201\;{\mu}M-Pi/min/mg-protein$ in Ca-ATPase activity and $3.3{\sim}3.4M/10^5$g-protein in free SH-group content. The first-order rate plots were obtained on the decrease of Ca-ATPase activity and ATP-sensitivity with an increase in temperature, while the free SH-group was increased to $60^{\circ}C$ and decreased rapidly above the temperature. The half-life of Ca-ATPase activity on the actomyosin Ca-ATPase was 280 min at $12^{\circ}C$, 125 min at $20^{\circ}C$, 55 min at $30^{\circ}C$ and 13 min at $40^{\circ}C$, and activation energy, activation enthalpy, activation entropy and free energy of the proteins at $20^{\circ}C$ wene 5,395 cal/mole, 4,814 cal/mole, -40.42 e.u. and 17,626 cal/mole, respectively. The protective effect of the additives on the actomyosin Ca-ATPase showed that the most effective material is $3\%$ sorbitol and followed in the order of $8\%$ Na-glutamate, $1\%$ sucrose and $1\%$ L-cysteine. The actomyosin was more stable at $-30^{\circ}C$ than at $0^{\circ}C$ and $-20^{\circ}C$. and when the additives were used in the low temperature storage, $8\%$ Na-glutamate was the most effective. $3\%$ sorbitol, $1\%$ sucrose and $1\%$ L-cysteine was to become lower in the order.

• Journal of Preventive Medicine and Public Health
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• v.10 no.1
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• pp.125-133
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• 1977

The author have performed, from June to July 1976, a sociomedical study on the 314 prostitutes which was engaged in tourism in Dongrae, Busan. The obtained results were as follows: 1. Age distribution was from 20 years old to 34 years old and the highest as 36.6% was 23-25 years old group. Most of the respondents as 95.2% were under 31 years old group. 2. Distribution of respondents by educational level showed that the group below the graduated primary school was 47.2%, middle school 29.3% and high school 57.0% in that order. 5. By the occupation before be ruined, none was 34.5%, waitress at saloon 24.2%, hostess 14.3%. 4. By distribution of birth place, most of the respondents as 64.0% were Gyeongsang Do(37.9%) and Busan City (26.1%). 5. Distribution of respondents by family status showed that only mother was highest as 43.9% and 82.2% of respondents have been supported their family. 6. Monthly incomes of respondents were distributed from 50,000 Won to 250,000 Won, and 50,000-100,000 Won group was the highest as 46.2%. In monthly sundry expenses, 20,000-30,000 Won group was the highest as 27.1%. 7. Monthly supporting expenses to their family were distributed from 10,000 Won to 50,000 Won and the highest as 26.7% was 10,000-20,000 Won group. Savings per month were distributed from 10,000 Won to 60,000 Won and 50,000-60,000 Won group was the highest as 22.3%. 8. Distribution of respondents by status of luxury showed that experiences of drinking was 20.4% and smoking was 55.7%. 9. By motive of falling into the ruin, economical causes was 41.7%. Most of the respondents as 95.0% expected under 3 years in prearranged period of their occupation. 10. By number of monthly entertainment, 5-10 persons as 58.0% was the highest. 11, Distribution of respondents by status of venereal disease and pulmonary tuberculosis showed that positive of gonorrhea was 8.0%, syphilis 1.6%, and pulmonary tuberculosis was 1.6%.

• Journal of the Korean Society of Food Science and Nutrition
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• v.42 no.4
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• pp.644-649
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• 2013

This study was conducted to determine the intake and satisfaction levels of Busan local foods in Japanese tourists visiting Busan. The degree of satisfaction with Busan foods and services in restaurants was evaluated. What these tourists wanted to eat after touring Busan was also determined. The subjects consisted of 100 Japanese tourists visiting Busan. Women (including housewives), highly educated people, and people who visited more than four times were predominant in number among the Japanese tourists. Busan local foods eaten during touring were: Dongrae Pajeon (29%), Sengsunhoe (21%), Daejikukbap (10%) and Haemultang (10%). Tourists wanted to taste local foods and answered that eating local foods during the tour was important. A variety of menu items earned a high score of 3.8 (from a highest possible score of 5.0) and various dessert items received a low score of 2.7 for satisfaction with Busan foods. In general, the satisfaction level for Busan foods was low. Tourists responded that they wanted to eat Bulgogi, Pajeon, Bibimbap, Sengsunhoe, and Kimchi jjigae in that order if they revisit Busan, indicating their preference for general Korean foods rather than Busan local foods. From all of the activities included in touring Busan, foods received the highest points (51%) in terms of attraction. As fifty four percent of subjects answered that they wanted to revisit Busan. Busan city needs to prepare tourist restaurants for Bulgogi, Bibimbap, Pajeon, and seafoods (including Sengsunhoe). They must also improve Busan local foods and restaurant services in order to attract and satisfy the Japanese tourists industry.

• Korean Journal of Psychosomatic Medicine
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• v.27 no.2
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• pp.101-110
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• 2019

Objectives : It is not clear which clinical variables are most closely associated with delirium in the Intensive Care Unit (ICU). By comparing clinical data of ICU delirium and non-delirium patients, we sought to identify variables that most effectively differentiate delirium from non-delirium. Methods : Medical records of 6,386 ICU patients were reviewed. Random Subset Feature Selection and Principal Component Analysis were utilized to select a set of clinical variables with the highest discriminatory capacity. Statistical analyses were employed to determine the separation capacity of two models-one using just the selected few clinical variables and the other using all clinical variables associated with delirium. Results : There was a significant difference between delirium and non-delirium individuals across 32 clinical variables. Richmond Agitation Sedation Scale (RASS), urinary catheterization, vascular catheterization, Hamilton Anxiety Rating Scale (HAM-A), Blood urea nitrogen, and Acute Physiology and Chronic Health Examination II most effectively differentiated delirium from non-delirium. Multivariable logistic regression analysis showed that, with the exception of vascular catheterization, these clinical variables were independent risk factors associated with delirium. Separation capacity of the logistic regression model using just 6 clinical variables was measured with Receiver Operating Characteristic curve, with Area Under the Curve (AUC) of 0.818. Same analyses were performed using all 32 clinical variables;the AUC was 0.881, denoting a very high separation capacity. Conclusions : The six aforementioned variables most effectively separate delirium from non-delirium. This highlights the importance of close monitoring of patients who received invasive medical procedures and were rated with very low RASS and HAM-A scores.

• Journal of Korea Water Resources Association
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• v.46 no.12
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• pp.1193-1207
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• 2013

Increase of impervious area caused by overdevelopment has led to increase of runoff and then the problem of flooding and NPS were brought up. In addition, as decrease of base flow made groundwater level to decline, a stream that dries up is issued. low impact development (LID) method which is possible to mimic hydrological water cycle, minimize the effect of development, and improve water cycle structure is proposed as an alternative. As introduction of LID in domestic increases, the study on small watershed is in process mainly. Also, analysis of property of hydrological runoff and load on midsize watershed, like sewage treatment district, is required, the study on it is still insufficient. So, area applying LID practices from watershed of Dongrae stream is pinpointed and made the ratio and then expand it to watershed of Oncheon stream. Among low impact development practices, Green Roof, Porous Pavement, and Bio- retention are selected for the application considering domestic situations and simulated with SWMM-LID model of each watershed and improvement of water cycle and reduction of non-point pollution loads was analysed. Improvement of water cycle and reduction of non-point pollution loads were analyzed including the property of rainfall and soil over long term simulation. The model was executed according to scenario based on combination of LID as changing conductivity in accordance with soil type of the watershed. Also, this study evaluated area of LID application that meets the efficiency of conventional management as a criteria for area of LID practices applying to sewer treatment district by comparing the efficiency of LID application with that of conventional method.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.35 no.2
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• pp.87-97
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• 2017

Paulownia species has long been recognized in Korean traditional culture and the values of the species have been researched in various focuses. However, studies on distribution and ecological characteristics of the species are still needed. This study aimed to identify distribution trends and ecological characteristics of two Paulownia species in Busan metropolitan city using the MaxEnt model. The MaxEnt model was established based on the environmental factors such as positioning information of the Paulownia species, topography, climate and degree of anthropogenic disturbance potentiality (ADP), which was collected in the on-site research. The study verified that the accuracy of the model was appropriate as the AUC value of Paulownia coreana and P. tomentosa was 0.809, respectively. In terms of the distribution trends of the two Paulownia species in the research area depending on the distribution model, they were both mainly distributed in downtown where built-up area and bare ground were densely concentrated. The potential distribution area of the two species was identified as $137.4km^2$ for P. coreana and $135.0km^2$ for P. tomentosa. The distribution probability was high in Jung-gu, Dongrae-gu, Busanjin-gu and Yeonje-gu. As a result of the analysis on contribution of the environmental factors, it was turned out that the degree of anthropogenic disturbance potentiality (ADP) contributed to distribution of P. coreana and P. tomentosa by about 50%, and the contribution of the environmental factors had a positive correlation with the degree of ADP. The elevation had a negative correlation with both the two species, which was considered because the species must compete more with native species in natural habitats as the altitude above sea level rises. The research findings demonstrated numerically that the distribution of P.coreana and P. tomentosa depended on artificial activities, and indicated the relevance with the Korean traditional landscape. These findings are expected to provide meaningful information in using, preserving and restoring Paulownia species.

• Journal of the Korean Society of Food Science and Nutrition
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• v.42 no.9
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• pp.1492-1498
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• 2013

This study was conducted to evaluate the intake of food and degree of satisfaction of services among Chinese tourists in the restaurants in Busan. The choice of what these tourists would eat after touring Busan was also determined. We chose 100 independent Chinese tourists visiting Busan for this study. Students, housewives, highly educated people, and people who visited once or twice were predominant among our study subjects. The Chinese tourists chose the following Busan local foods during their visit: Saengseonhoe (19%), Haemultang (19%), Oribulgogi (17%), Dwaejigukbap (12%), and Dongrae Pajeon (11%). The tourists responded that they would like to eat Bulgogi, Samgyeopsal, Bibimbap, Doenjangjjigae, and Dwaejigalbi again if they revisit Busan, indicating that they prefer general Korean food rather than Busan local food. The degree of satisfaction of Chinese tourists with Busan food was low and their response showed they were not satisfied with the prices and the amount of food served. Services (kindness, cleanliness) in Busan restaurants ranked high in the opinion of Chinese tourists. Of all the courses included in their tour of Busan, shopping for items received the highest score of satisfaction (44%), while food in Busan earned the lowest (10%). As regards intention to revisit Busan, 38% of the Chinese tourists answered yes, and 61% were unsure, and 1% was no. Our survey results indicate that restaurants in Busan city need to prepare food of choice for Chinese tourists and also make an effort to raise satisfaction on the cost and amounts of Busan foods.

• Investigative Magnetic Resonance Imaging
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• v.8 no.2
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• pp.100-108
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• 2004

Purpose : Early degeneration of articular cartilage is accompanied by a loss of glycosaminoglycan (GAG) and the consequent change of the integrity. The purpose of this study was to biochemically quantify the loss of GAG, and to evaluate the $Gd(DTPA)^{2-}$-enhanced, and T1, T2, rho relaxation map for detection of the early degeneration of cartilage. Materials and Methods : A cartilage-bone block in size of $8mm\;\times\;10mm$ was acquired from the patella in each of three pigs. Quantitative analysis of GAG of cartilage was performed at spectrophotometry by use of dimethylmethylene blue. Each of cartilage blocks was cultured in one of three different media: two different culture media (0.2 mg/ml trypsin solution, 1mM Gd $(DTPA)^{2-}$ mixed trypsin solution) and the control media (phosphate buffered saline (PBS)). The cartilage blocks were cultured for 5 hrs, during which MR images of the blocks were obtained at one hour interval (0 hr, 1 hr, 2 hr, 3 hr, 4 hr, 5 hr). And then, additional culture was done for 24 hrs and 48 hrs. Both T1-weighted image (TR/TE, 450/22 ms), and mixed-echo sequence (TR/TE, 760/21-168ms; 8 echoes) were obtained at all times using field of view 50 mm, slice thickness 2 mm, and matrix $256\times512$. The MRI data were analyzed with pixel-by-pixel comparisons. The cultured cartilage-bone blocks were microscopically observed using hematoxylin & eosin, toluidine blue, alcian blue, and trichrome stains. Results : At quantitation analysis, GAG concentration in the culture solutions was proportional to the culture durations. The T1-signal of the cartilage-bone block cultured in the $Gd(DTPA)^{2-}$ mixed solution was significantly higher ($42\%$ in average, p<0.05) than that of the cartilage-bone block cultured in the trypsin solution alone. The T1, T2, rho relaxation times of cultured tissue were not significantly correlated with culture duration (p>0.05). However the focal increase in T1 relaxation time at superficial and transitional layers of cartilage was seen in $Gd(DTPA)^{2-}$ mixed culture. Toluidine blue and alcian blue stains revealed multiple defects in whole thickness of the cartilage cultured in trypsin media. Conclusion : The quantitative analysis showed gradual loss of GAG proportional to the culture duration. Microimagings of cartilage with $Gd(DTPA)^{2-}$-enhancement, relaxation maps were available by pixel size of $97.9\times195\;{\mu}m$. Loss of GAG over time better demonstrated with $Gd(DTPA)^{2-}$-enhanced images than with T1, T2, rho relaxation maps. Therefore $Gd(DTPA)^{2-}$-enhanced T1-weighted image is superior for detection of early degeneration of cartilage.