• Journal of Technologic Dentistry
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• v.7 no.1
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• pp.41-51
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• 1985

This study has been to survey the present situation of satisfaction to the occupation and dental laboratory by means of selscting 200 dental technicians who are woked in Pusan, Deagu, Kwangju, Deajun. Questionaires were distributed to them and the summerized results were as follows; 1. In general, the dental technician's satisfaction of the occpation was revealed as moderate(Mn, 2.83), the dental technician's satisfaction of the laboratory was revealas moderate(Mn, 2.80). The highest degree item out of the satisfaction of occpation was the outlook(Mn, 3.23), and the lowest degree item was the advancement and the rise to a high position(Mn, 2.22). The highest degree item out of the satisfaction of laboratory was dental material(Mn, 3.07), and the lowest degree item was the equipment of dust collection(Mn, 2.49) 2. By age, the highest degree item out of the satisfaction of occpation was 30 to 43 group(Mn, 3.28), 50 and over group was the lowest degree item(Mn, 2.89). The highest degree item out of the satisfaction of laboratory was 40 to 50 group(Mn, 3.10), the lowest degree item was 35 to 39 group(Mn, 2.88). 3. By school career, the satisfaction of occpation and dental laboratory were higher in the graduated college group than the graduated highschool group. 4. By personal health state, the highest degree item of the satisfaction of occpation was the health group(Mn, 3.25). The highest degree item of the satisfaction of laboratory was the unhealthy group(Mn, 3.07). 5. By religion, the satisfaction if iccupation of laboratory ws higher in the religious group than the non-religious group. 6. By job career, the highest degree item of occupation satisfaction was 15 to 20 years group(Mn, 3.27), the lowest degree item was 20 and over group(Mn, 3.02). The highest degree item out of the satisfaction of laboratory was 15 to 20 years group(Mn, 3.05), The lowest degree item was 7 to 10 years group (Mn, 2.90). 7. By job position, the highest degree item out of satisfaction of occupation was the chief of laboratory group(Mn, 3.33), the head of laboratory group was the lowest degree item(Mn, 3.07). The hightest degree item out of the satisfaction of laboratory was the head of laboratory group(Mn, 3.10), the lowest degree item was the chief of laboratory group(Mn, 2.88). 8. By the place of employment, the degree of occpational satisfaction by items was found that the highest degree in the group engagel in general hospital(Mm, 3.43), the group engaged in dental clinic and hospital(Mn. 3.24), and the dental laboratory group(Mn. 3.14) in order. The difference among the group was significant emough(P<0.05). The highest degree item out of the satisfaction of laboratory was dental laboratory group(Mn. 2.70). The difference among the group was significant emough(P<0.01). 9. By monthly salary, the highest degree item out of the satisfaction of occupation was ￦500,000 to 600,000 group(Mn. 3.32), the lowest degree item was ￦600,000 and over group(Mn, 3.07). The highest degree item out of the laboratory satisfaction was ￦100,000 to 200,000 group(Mn, 3.03), the lowest degree group was ￦300,000 to 400,000 group(Mn, 2.95). 10. As compared with the degree of satisfaction according to job satisfaction, the highest degree item out of the occupational satisfaction was much satisfied group(Mn, 3.65), the lowest degree item was non-satisfied group(Mn, 2.68). The difference among the group was significant enough(P<0.05). The highest degree item out of the satisfaction of laboratory was non-satisfied group(Mn, 30.9), the lowest degree item was satisfied group(Mn, 2.84). The difference among the group was significant enough(P<0.01).

• The Journal of Korean Society of Virology
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• v.27 no.2
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• pp.129-135
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• 1997

Serum samples from 123 males and 123 females collected by age in 1996 were analyzed for antibodies against surface antigen of Hepatitis B virus and C22-3, C200 antigens of Hepatitis C virus. Sera from the children under the age of 10 showed 30% seropositivity to the surface antigen of Hepatitis B virus, 33.3% in $10{\sim}19$ year group, 20% in $20{\sim}29$ year group, 17.6% in $30{\sim}39$ year group, 3.3% in $40{\sim}49$ year group, 5.9% in $50{\sim}59$ year group, 8,3% in $60{\sim}69$ year group, 2.9% in $70{\sim}79$ year group, but antibody could not found in $80{\sim}86$ year group. 12 out of 123 male sera were positive, 19 out of 123 female sera were positive and overall rate of positivity of antibody against surface antigen of Hepatitis B virus was 12.6%. Serum samples from peoples under the age of 30 had not antibody against C22-3, C200 antigens of Hepatitis C virus. The positivity rate was 2.9% in $30{\sim}39$ year group. 5 out of 30 sera from $40{\sim}49$ year age group were positive, and 3 positive sera showed extremely high titer (1:524,288) but the titers of two remaining sera were 1:32, 1:8,192 respectively. 5.9% was positive in $50{\sim}59$ year group, 8.3% in $60{\sim}69$ year group, 11.8% in $70{\sim}79$ year group but all negative in $80{\sim}86$ year group 6 out of 123 male sera were positive (4.9%), 9 out of 123 female sera were positive (7.3%). Overall rate of positivity of antibody against C22-3, C200 antigen of Hepatitis C virus was 6.1 %. None out of 246 sera had both antibodies against Hepatitis B virus and Hepatitis C virus.

• Proceedings of the Korean Geotechical Society Conference
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• 2000.03b
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• pp.387-394
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• 2000

In the present study, laboratory pull-out tests with screw anchors are carried out to investigate behavior characteristics of underground structures applied uplift seepage forces. Small scaled pull-out tests in sand were conducted under saturated condition. And then, it was observed that the upward displacement as well as the pullout load varied with spacing of the anchor. Also, analyses have been performed with the aim of pointing out the effects of various parameters on the group effect of the screw anchors.

• Korean Journal of Community Nutrition
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• v.25 no.2
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• pp.102-111
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• 2020

Objectives: The frequency of eating out among adolescents seems to be connected to a high rate of skipping breakfast and be interrelated to various nutritional problems. The purpose of this study was to assess the dietary habits of breakfast and eating out and investigate their relationships in male adolescents. Methods: This study conducted a cross-sectional survey. Dietary habits and eating out status were surveyed among 510 male students at a high school in Incheon and compared according to their breakfast skipping and breakfast type. Results: The percentages of subjects in the breakfast skipping group and breakfast group were 41.0% and 59.0%, respectively, and the breakfast group comprised a Korean meal group (74%) and a convenience meal group (26%). In the breakfast skipping group, the percentage of subjects buying and eating snacks due to hunger was 39.7%. Reasons for eating breakfast among subjects who ate breakfast were because parents prepared breakfast (41.9%) and out of habit (31.5%) in the Korean meal group, in contrast to because parents prepared breakfast (36.7%) and due to hunger (29.1%) in the convenience meal group (P < 0.001). Breakfast preparer was mother (91.4%) in the Korean meal group, in contrast to mother (67.1%) and self (20.3%) in the convenience meal group (P < 0.001). A high proportion of the breakfast group woke up at 07~07:30 or 06:30-07, whereas a high proportion of the breakfast skipping group woke up at 07~07:30 or after 07:30, showing a significant difference according to breakfast skipping (P < 0.001). A high proportion of the breakfast group spent 10,000 won (32.5%) a week eating out while a high proportion of the breakfast skipping group spent 20,000 won or more (28.2%), showing a significant difference (P < 0.01). Conclusions: About 40% of male high school students skipped breakfast and consumed snacks as a solution after breakfast skipping. The students who skipped breakfast spent more money on eating out. These results show that breakfast status may be related to eating out. Therefore, practical education on food choice and meal preparation along with regular breakfast instruction is needed in male adolescents.

• Asia Marketing Journal
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• v.19 no.1
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• pp.55-67
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• 2017

This study explores the influence of reference groups depending on the type (in-group versus out-group) and the size (an individual member versus a group as a whole) of reference groups. We propose a mixed conformity model, which suggests that people want to fit in with their in-group but at the same time they want to stand out within their in-group members. We found that in moderately identity-relevant product categories, people tend to diverge from individual members of their in-group while conforming to their in-group as a whole. However, in highly identity-relevant product categories, people conform to their in-group independent of the referent's size. Directions for future research are outlined in order to further establish and understand the proposed phenomenon.

• Journal of Chest Surgery
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• v.23 no.4
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• pp.707-714
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• 1990

Despite of mortality and morbidity rates that are higher than other forms of therapy, surgical resection has been mainstay for the treatment of esophageal cancer because of a prompt completeness as well as a high possibility of cure. But a substantial numbers of patients are unsuitable for surgical treatment and those undergoing resection have still poor long term survival rate. With hopes of improving long term survival, we have attempted multimodal approach, composed of preoperative induction chemotherapy utilizing Cisplatin and 5 \ulcornerFU, surgery and postoperative loco-regional radiotherapy for the treatment of esophageal cancer since 1985. During the period of 1967 \ulcorner1985, 27 patients[group A] were treated by surgery only and during recent 5 years 28 patients[group B] by multimodal treatment, Clinical review and comparison between the two groups were as follows: l. Applied surgical procedures were hand-sewn esophagogastrostomy, esophagocologastrostomy and esophagojejunostomy in group A. In group B, only esophagogastrostomy was underwent using stapler mainly. 2. Incidence of peri and postoperative complication showed no remarkable differences between the two groups, but the occurrences of leakage from the anastomotic site were 5[19% ] out of group A and 1[4%] out of group B. 3. The response rate to induction chemotherapy was 36% in group B, 4. The number of local cancer recurrence at the site of anastomosis was 6[22%] out of group A, whereas 2[7%] out of group B. 5. Postoperative I year and 2 year survival were 61%, 15% in group A and 75%, 42% in group B.

• Restorative Dentistry and Endodontics
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• v.18 no.1
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• pp.84-94
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• 1993

The purpose of this study was to evaluate flexure strength of composite resin inlay according to heat treatment and duration in comparasion with visible light-cured resin. In this study, materials were used 1 visible light-cured resin and 3 kinds of composite resin inlays. Control group was visible light cured resin (Photo Clearfil Posterior) and experimental groups were composite resin inlays (Brilliant Dentin, Brilliant Enamel and Clearfil CR Inlay). Experimental groups were divided 3 groups: First group was Brilliant Dentin and second group was Brilliant Enamel and -third group was Clearfil CR Inlay. Used experimental groups were calculated flexural strength according to heat treatment and duration. The following results were obtained: 1. Experimental groups were higher flexural strength than control group. 2. At $100^{\circ}C$ when heat treatment carried out 7 minutes flexural strength elevated third group, second group, first group in turn and when heat treatment carried out 15 minutes flexural strength elevated third group, second group, first group in turn but no difference was showed between first and second group. 3. At $125^{\circ}C$ when heat treatment was carried out 7 minutes flexural strength elevated third group, second group, first group in turn and when heat treatment was carried out 15 minutes flexural strength elevated third group, first group, second group in turn but no difference was showed between first and second group. 4. In spite of heat treatment and duration the third group was highest flexural strength in the others groups.

• Journal of Trauma and Injury
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• v.22 no.1
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• pp.44-50
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• 2009

Purpose: The purpose of this study was to evaluate the causes of blow-out fractures, the computed tomography findings, and the associated facial bone fractures in aged patients. Methods: This study was performed by conducting a chart review. From January 2004 to December 2007, the patients who visited the emergency room of Asan Medical Center and were diagnosed as having a blow-out fracture were included in the study population. Patients 60 years of age or older were grouped as the aged group while patients younger than 60 years of age were grouped as the control group. Results: Between the aged group and the control group, there was a difference in the causes of blow-out fractures. The most common cause of blow-out fracture was a slip down in the aged group and violence in the control group (p<0.05). There were no differences in associated symptoms. Extraocular muscle herniation was the only statistically different computed tomography findings. In associated facial bone fractures, the most common fractures were the zygoma in the aged group and the nasal bone in the control group (p<0.05). Conclusion: In patients 60 years of age or older, the most common cause of blow-out fracture was a slip down, and the most common associated facial bone fracture was a zygomatic fracture.

• Journal of the Korean Society of Costume
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• v.53 no.4
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• pp.101-112
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• 2003

The purpose of this study was to examine the relationship among self-esteem, degree of appearance concern, clothing attitude and make-up to serve as a basis for the development of more differentiated marketing program for clothing and cosmetics industries that takes the delicate psychological characteristics of women into account. The subjects of this study were 936 adult woman from the age of 20 to the age of 40 living in Daegu. The data were analyzed by using MAVOVA, ANOVA, frequency analysis, the analysis of confidence coefficient and the Cronbach's $\alpha$ were also applied. The result of this study were summarized as follows : 1. The group with a high degree of self-esteem was found out to pursue fashion and interest more than the group with a low degree of self-esteem. The group with a low degree of self-esteem was found out to have higher conformity than the group with a high degree of self-esteem. It was found out that the group with a high degree of self-esteem shows a higher degree of make-up than the group with a low degree of self-esteem. 2. The group with a high degree of appearance concern was found out to pursue fashion and interest more than the group with a low degree of appearance concern. It was found out that the group with a low degree of appearance concern shows a higher conformity than the group with a high degree of appearance concern. The group with a high degree of appearance concern shows a higher degree of makeup than the group with a low degree of appearance concern.

• Journal of the Korean Dietetic Association
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• v.10 no.3
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• pp.345-355
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• 2004

This study was conducted to investigate the dietary pattern of children with unbalanced diet in school feeding. Children who eat only what they like among elementary school students were selected for this survey. The general characteristics, nutrition knowledge, eating behavior, food intake frequencies and food preferences of the subjects were investigated compared with control group. The subjects were consisted of a total of 160 children : 92 male students(unbalanced-diet group, 46; control group, 46), and 68 female students(unbalanced-diet group, 34; control group, 34). There was no significant difference in nutrition knowledge between the unbalanced-diet group and the control group. Dietary behavior of control group turned out to be more desirable than that of the unbalanced-diet group. In addition, 68.7% of the unbalanced-diet group and 13.8% of the control group hated to eat vegetables. The result of food intake frequency indicates that the control group turned out to be higher in their intake of fish, cereals, vegetables, seaweeds, fats & oils and Kimchi compared with unbalanced-diet group. Intake frequency of minerals and vitamins of the control group was higher than that of the unbalanced-diet group. On the other hand, the unbalanced-diet group turned out to be higher in sugar intake. Children showed the greatest preference of fruits. The unbalanced group turned out to prefer sugar and beverages more than the control group. These results suggest that the desirable dietary habits of children should be formed with the help of nutrition education designed for behavior modification.