• Transactions of the Korean Society of Mechanical Engineers B
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• v.26 no.7
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• pp.966-975
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• 2002

Acoustic behavior in baffled combustion chambers is numerically investigated by adopting linear acoustic analysis. Partial blade baffle, which is a variant of blade baffle, and hub-blade baffle with six blades are employed as baffle models. Through modal analysis, natural frequencies of each acoustic mode in baffled chambers are calculated and the reduction in natural frequencies caused by baffle installation is examined. Through harmonic analysis, acoustic pressure responses of each chamber to acoustic oscillating excitation are shown. The first tangential mode is found to be most sensitive to acoustic oscillation. Acoustic damping effect of baffle is quantified by damping factor. Damping effect of hub-blade baffle is the most appreciable and damping factor of partial blade baffle is much lower than that of blade baffle. Damping effect of six-blade baflle on the second tangential mode is as much as on the first tangential mode and hub-blade baffle can damp out appreciably the first tangential as well as the first radial mode with the aid of hub.

• Journal of Families and Better Life
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• v.21 no.5
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• pp.93-107
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• 2003

The purpose of this study was to verify the effectiveness of sociodrama on adolescents who are maladjusted in school. For this study, nine adolescents were selected from a middle school located in Seoul. The Inventory of School adjustment by Bae Sook-Jin, Buss-Durkee Hostility Inventory(BDHI) and Impulsivity Test by Eysenck were administered. The experiment group acted out a sociodrama twelve times. The first follow-up test was conducted twelve weeks after the pre-test. The second follow-up test was conducted six weeks after first follow-up test. Each time the adolescents acted out a sociodrama their behavior was recorded by a video- camera and then documented by research assistants. Also in order to discover any changes in daily life after sociodrama, an interview survey were done with the adolescents' teachers. The findings were as follows. First, in the initial follow-up test degree of school-maladjustment was less than in the pre-test. Further decreases in the level of maladjustment were noted in the subsequent follow-ups. Therefore, it can be concluded that the performance of sociodramas can reduce school-maladjustment among adolescents and that this reduced level is maintained. Second, the level of hostility discovered in the first follow-up test was less than that in the pre-test, and this level continued to decrease in the following follow-ups. Therefore, we may conclude that sociodrama that reduces adolescent hostility and the reduced levels continue. Finally, the degree of impulse detected in the first follow-up was, once again, less than that of the pre-test, And, as in the other cases, there was a continued decrease in this level. We may therefore conclude that sociodrama does reduce the impulse of adolescents and that this reduction is maintained. This study indicates that sociodrama is an effective method to improve the psychological characters of adolescents who are maladjusted in school. Given the above, a follow up study is suggested.

• The Journal of Fisheries Business Administration
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• v.42 no.2
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• pp.113-130
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• 2011

The laver has been cultivated long time ago by Korea and Japan. Korean Laver Industry has been influenced by Japan on the many factors since 20th. Nevertheless now the both country showed widening disparities across the aspect of total Laver Industry each other. The development steps of Korea and Japan Laver Industry have been advanced differently. That is, we can keep the Laver Industry development steps of both countries separate by 4 steps. But insignificant of every step against both countries has been dissimilar. We can separate from 4 steps in Korea, 1 step is origin period from beginning of laver cultivation to 1961. Next step is First Development period from 1962 to 1978. This period come out production increase from about 10,000 tons early 1960 to 50,000 tons late 1970. Next step is Second Development period from 1979 to 2000. This period come out eminent production increase from about 50,000 tons early 1980 to 200,000 tons late 1990. Next step is Stabilization period from 2001 to now. This period come out production control the size of its production and enlargement of Laver Export. We can also separate from 4 steps in Japan, 1 step is origin period from beginning of laver cultivation to 1944. Next step is Development period from 1945 to 1975. This period come out production increase from about 4 billion sheets early 1960 to 8.5 billion sheets 1975. Next step is Peak period from 1976 to 1982. This period come out sustainable production peak by 6~8 billion sheets and high price. Next step is Decline period from 1983 to now. This period come out production control the size of its production and sustainable price down. These differences showed out facing problems of Korean and Japanese Laver Industry differently. In case of Korea, the facing problems show out 3. First is structural problem, for example, trouble between original laver producer and the finished producer by dry laver products. Second is Insufficiency of Plants Protection System. Third is low quality of Laver. In case of Japan, the facing problems also show out 3. First is sustainable decrease of laver consumption. Second is change of mind against laver, for example, the change of the propensity to consume, and decrease of brand power. Third is Influence of global system. The difference of development steps of Korea and Japan Laver Industry show out 2 point of view to us. First we need consider positive strategy against laver production system of enlargement. Second, we need consider separate strategy against high quality laver and low quality laver.

• Journal of Korea Society of Digital Industry and Information Management
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• v.12 no.3
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• pp.311-325
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• 2016

This study aims to investigate strategies for attracting consumers in Urban Entertainment Centers and understand the relationship between user satisfaction and intention of revisiting. To accomplish this, the strategic attraction factors were set as functional, experiential, episodic, and semantic. The relationships between these factors and revisiting intentions were studied experimentally. The result of the study can be summarized to 3 points. First, the 4 strategic factors that were selected all had a significant influence on revisiting intention. Therefore the more these factors have an influence, the higher the satisfaction and revisiting intentions. Secondly, out of the attraction factors the one with the biggest influence to customer satisfaction turned out to be 'functional factors' which is related to convenience, accessibility and availability. The factor that had the biggest influence on revisiting intentions turned out to be 'semantic factors' which is related to events, unusualness and temporality. Through this result we can see that to enhance satisfaction 'functional factors' should be considered first and to increase revisiting intentions 'episodic factors' should be considered first. Thirdly, it could be assumed that satisfaction of the visitors could boost intentions of revisiting.

• Asian Pacific Journal of Cancer Prevention
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• v.13 no.11
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• pp.5725-5728
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• 2012

Growing evidence shows that deregulation of the circadian clock plays an important role in the development of malignant tumors, including gliomas. However, the molecular mechanisms of gene chnages controlling circadian rhythm in glioma cells have not been explored. Using real time polymerase chain reaction and immunohistochemistry techniques, we examined the expression of two important clock genes, cry1 and cry2, in 69 gliomas. In this study, out of 69 gliomas, 38 were cry1-positive, and 51 were cry2-positive. The expression levels of cry1 and cry2 in glioma cells were significantly different from the surrounding non-glioma cells (P<0.01). The difference in the expression rate of cry1 and cry 2 in high-grade (grade III and IV) and low-grade (grade 1 and II) gliomas was non-significant (P>0.05) but there was a difference in the intensity of immunoactivity for cry 2 between high-grade gliomas and low-grade gliomas (r=-0.384, P=0.021). In this study, we found that the expression of cry1 and cry2 in glioma cells was much lower than in the surrounding non-glioma cells. Therefore, we suggest that disturbances in cry1 and cry2 expression may result in the disruption of the control of normal circadian rhythm, thus benefiting the survival of glioma cells. Differential expression of circadian clock genes in glioma and non-glioma cells may provide a molecular basis for the chemotherapy of gliomas.

• Asian Oncology Nursing
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• v.1 no.1
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• pp.54-64
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• 2001

This study was conducted to explore the trajectory of fatigue and related factors on people with lung cancer during chemotherapy. A total of 23 patients with lung cancer participated in the beginning stage of the study. However, 11 dropped out because of death or discontinuity of the studys regimens. The data using the Pipers Fatigue Scale, were collected twice the first day of each treatment cycle and the last day of the completion of 6 cycles. Also, the scores of fatigue using the Visual Analogue Scale (VAS) were measured on the same day of each week during chemotherapy to explain the trajectory of fatigue. The data obtained were analyzed using the Wilcoxon signed ranks tests and Kendalls tau b correlation coefficient. The score of fatigue increased in the first two weeks after the administration of chemotherapy, while decreasing after the second week. During the 1st, 5th, and 6th cycles, the scores of fatigue were greater than 5.5 out of 10. Overall, except for the 6th cycle, the score of fatigue was the highest in the first week. This could be accounted for there only being a small number of patients included in the 6th cycle. In conclusion, fatigue was severe at the end of the first week of chemotherapy, and then increased to reach a plateau in the fifth and sixth stages. The results of this study will help oncology nurses to understand the process of fatigue during chemotherapy. It will be useful to create various intervention programs to decrease fatigue in people with cancer especially in the first week of the chemotherapy.

• Journal of the Korean Institute of Rural Architecture
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• v.19 no.2
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• pp.25-33
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• 2017

This study aims to find out the change trend of the existing vacant houses in the small and medium sized farming city. And the using method of those houses is proposed in this paper. Especially to find out the change trend ratio of vacant houses in the case, the historic conservation area - Keumma village is selected as the research target area. To carry out this study, it was surveyed in 2013 when they were not designated as the special area first. And it is reviewed in 2017 when it is designated. The contents of the survey were their use, old age, structure, materials, color, roof of the main building and wall. they were surveyed by direct and interview survey. And thew were analyzed and synthesized. It is concluded that the 142 vacant houses in 2013 were declined 46houses in 2017. It is caused by the government support. And they will be declined continuously. The architectural statues of vacant houses between in 2013 and in 2017 are almost same in it's use, old age, structure, materials, color, roof of the main building and wall. In the use ratio of the vacant houses that of residence is most high, and that of warehouses, commerce are followed in turn. The reason of that statues is moving out is the first and the death of house holder, the difficulty of managing are followed. As the their re-use plan of owners, the selling is the first, constructing new buildings and the renovation them are followed. As the method of their use, re-use, community facilities, managing in the vacant houses bank are proposed. As the vacant houses are the reason of bad elements in the rural landscape in the farm village, the method of its improvement will be carried out.

• Speech Sciences
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• v.10 no.2
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• pp.15-25
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• 2003

In this paper, we propose an algorithm on OOV(Out-of-Vocabulary) rejection based on two-stage method. In the first stage, the algorithm rejects OOVs using generic word model, and then in the second stage, for further reduction of false acceptance, it rejects words which have low similarity to the candidate by measuring the distance between HMM models. For the experiment, we choose 20 in-vocabulary words out of PBW445 DB distributed by ETRI. In case that the first stage is processed only, the false acceptance is 3% with 100% correct acceptance, and in case both stages are processed, the false acceptance is reduced to 1% with 100% correct acceptance.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.46 no.5
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• pp.424-427
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• 2001

Combining ability study was carried out on the components of synchronization in maturity and determinate growth habit in mungbean, using 6$\times$6 diallel cross. Both additive and non-additive gene effects were found conditioning the inheritance of days to first flower, days between first pod and 90% pod maturity (DDd1), plant height from first pod stage to 90% pod maturity (DDhl, DDh2, and DDh3). Only non-additive gene action was important in degree of determination from first pod stage to 90% pod maturity (DDd2). While only additive action was important in plant height at first flower. The predominant additive gene action was observed in all traits but non-additive was significant in only DDd$_2$. For synchronization in maturity, determinate growth habit, and their components, the best combiners were NM92, VCl560D, and NM89, whereas the best indeterminate combinations were NM92 $\times$ NM89, NM92 $\times$ VCl560D, and NM92 $\times$ ML-5.

• Journal of Veterinary Clinics
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• v.5 no.2
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• pp.95-99
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• 1988

An observational study on the recurrences of left abomasal displacement after surgical correction was conducted in 178 Holstein cows. The correction methods were right flank omentopexy (A), right ventral paramedian abomasopexy (B) and left flank abomasopexy (C). Four(5.4) out of 74 cows by method A, 2(2.0) out of 101 cows by method B and 1(33.3%) out of 3 cows by method C had the recurrence of the disease after the first operation. As for the method A, 3 cows and a cow recurred 13-18 months and 27 months after the first operation, respectively. As for the method B, recurrence of the disease in two cows occurred 14 and 19 days after surgery, respectively. In a cow which had been indicated by method C, the recurrence was recurred 14 months after the operation.