粘土造形物에서의 抽象性硏究

鄭潭淳 단국대학교 1980 論文集 Vol.14 No.-

With a close relation between clay and man's life, man has made necessities of life with a clay. However, according to the change of the mode of living and of industrial structure and the pursuit of intellectual aesthetics of thought, more and more ceramic artists have tried to pursue the depth of representation towards intrinsic value of man in it's objects. Consequently, the representation of ceramic arts immensely become to change and ceramic artists are interested in prectical commodities or in artistic originality. Particularly, since 1950, there has been the trend of clay as only the medium of plastic form of clay and to understand this trend in detail we can classify as follows; 1. The change expressed in modern ceramic arts 2. As to the abstract of plastic form of clay in modern ceramic arts. (1) Relation between cermic arts and sculpture (2) Appearance of object ceramic Arts] (3) Return to the clay (4) Pottery as a plastic form (5) Clay as a culture enjoyed (6) Object solidified (7) World of aboriginality and incasstation form (8) Change of materials 3. The trend of the abstract ceramic artist's work. (1) Self-requlation of representation (2) Creation eliminated the function (3) Change of structure as the clay form (4) Clay as a symbolic object. Studying above the mentioned, we have understood that modern ceramic arts are expressed the abstract of representation and the importance of the general beauty in the pursuit of the nature as clay without the punction influenced by Pop Art, Mininal Art, NeoDada and so on, and the abstract of modern ceramic arts became the method of artistic representation.

주정폐수의 혐기성 소화처리시와 포기처리시 처리특성에 관한 연구

金煥起,李城白,黃譚勇 全北大學校 附設 都市및環境硏究所 1996 都市 및 環境硏究 Vol.11 No.1

The wastewater of alcohol manufactory plant has very high suspended soild and BOD concentration, acidity, and high temperture. Thus most of the plants drive on anaerobic digestion method of biological treatment because of using a lot of generated methane gas and possible to disinfect pathogenic bacteria in sluge and wastewater. But because of the problem in the concentration of anaerobic treatment water, second treatment is necessary 2-step activated treatment for increasing treatment efficiency. The purpose of this study was performed to know a difference between last 1-step digestion 1-step aeration treatment and 2-step digestion 2-step aeration treatment with retention time in digestion and aerator. The obtained results can be summarized as follows; 1. The concentration characteristic of alchohol production wastewater was analyzed COD 50,000∼80,000㎎/ℓ, BOD 22,000∼41,000㎎/ℓ, SS 20,000∼45,000㎎/ℓ, pH 4.1∼4.2, and 75∼80℃ according to the raw material of alchohol. 2. In case of the anaerobic digestion method of rice-barley wastewater, average COD removal rate of 2-step digestion appeared to 91.9% compared to average COD removal rate 59.3% on 1-step digestion. It is necessary to drive above 20 day of retention time in metane degestor because of increasing organic load causing the decrease of pH and the increase of VFA/COD within aerator. 3. Alcohol wastewater of tapioka is generally much treatment efficiency of 2-step digestion than that of 1-step digestion, but below 2.7㎏-COD/㎥·d of COD bulk load showed the possibility of treatment at 1-step and 2-step digestion method. 4. Amount of gas generation in anaerobic digestion was almost similar at 1-step and 2-step digestion. 5. In the result of aerobic treatment, treatment efficiency of 2-step consecutive aeration was highly about 3% compared to 1-step combined aeration and in the condition of COD 4,000㎎/ℓ, COD load 800㎏ -COD/d, COD volume-load 0.8㎏-COD/㎥·d were difficult two treatment methods both. 6. pH and VFA concentrations are considered as important factors to determine VFA restriction and the harmfulness of fatty acid was seemed to be related to pH. VFA in 1-step digestion appeared strong change with the increase of input wastewater quantity, but 2-step digestion was treated to stable change in output COD 1,230∼2,246㎎/ℓ.

Affecting of Online Comments on Impulse Buying in E-Distribution

Tri Cuong DAM(Tri Cuong DAM ) 한국유통과학회 2023 유통과학연구 Vol.21 No.3

Purpose: This study's purpose is to conduct empirical research on online comments affect Vietnamese consumers' impulsive buying in e-distribution. This study also considers affecting of browsing toward the urge to buy, and the urge to buy toward impulse buying in edistribution. Research design, data and methodology: This study used the non-probability method to assemble data from 273 customers' online buying experiences via a Google Forms online survey. By using SmartPLS, the data were examined for reliability, convergent validity, discriminant validity of the variables, and proposed hypothesis testing. Results: The empirical study discovered that internet comments with utilitarian and hedonistic values had a positive effect on browsing, the urge to buy, and impulse purchases in e-distribution. Additionally, the result revealed that browsing had a positive influence on the urge to purchase. Likewise, the findings also disclosed that the urge to buy had a favorable effect on impulse buying. Conclusions: This study offered a thorough conceptual model of internet feedback influencing browsing, urge to buy, and impulsive purchases in e-distribution. Also, to increase impulsive buying, this study will assist e-distribution managers in concentrating on developing innovative marketing strategies and action plans that take into consideration consumers' internet reviews, browsing, and urge to buy.

Relationships between Service Quality, Brand Image, Customer Satisfaction, and Customer Loyalty

DAM, Sao Mai,DAM, Tri Cuong Korea Distribution Science Association 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.3

The service industry has become the driving force of economic development in recent years. With the current fierce competitive situation, competing businesses have continually provided a superior quality of service, and an excellent perceived brand image to gain customer satisfaction and customer loyalty. This study's current purpose is to empirical research the linking between service quality, brand image, customer satisfaction, and customer loyalty. We collect research data from 299 consumers who bought goods at supermarkets in Ho Chi Minh City, Vietnam, using a convenient sampling technique. We proposed the conceptual model from prior studies and considered it in Vietnam's context. PLS-SEM was conducted to test the relationships in the conceptual model. We have estimated the scale's reliability by Cronbach's alpha values and composite reliability values. Moreover, we have evaluated discriminant validity by the Fornell-Larcker standard. The findings showed that service quality positively affects the brand image, customer satisfaction, and customer loyalty. Likewise, the results also confirmed brand image had a positive impact on customer satisfaction and customer loyalty. Moreover, the outcomes also disclosed that customer satisfaction had a positive relationship with customer loyalty. The research suggested implications for managers, limitations, and directions for future research from the above findings.

증례 : 류마티스 ; 류마티스관절염 환자에서 발생한 비정형 대퇴골 골절의 1예

김담 ( Dam Kim ),정소담 ( So Dam Jung ),손창남 ( Chang Nam Son ),최지영 ( Ji Young Choi ),이승훈 ( Seung Hun Lee ),김이석 ( Yee Suk Kim ),성윤경 ( Yoon Kyoung Sung ) 대한내과학회 2014 대한내과학회지 Vol.87 No.2

류마티스관절염 환자에서 질환 자체의 활성도나 질환으로 인한 비스포스포네이트의 장기간 사용 및 PPI, 스테로이드의 사용으로 비정형 대퇴골 골절의 위험도가 높아질 수있으므로 비정형 대퇴골 골절에 대한 많은 연구가 필요하다고 생각하며 대퇴부 통증이 있는 경우 비정형 대퇴골 골절을 염두에 두고 면밀한 진찰과 영상진단을 해야 한다. Atypical femoral fractures are characterized by a subtrochanteric or diaphyseal location. Recent studies have suggested that long-term treatment with bisphosphonates might be associated with the occurrence of atypical femoral fractures. The present report describes a case involving a 60-year-old woman with left buttock pain that was unassociated with trauma. Her hip pain was initially considered to be a symptom of her underlying rheumatoid arthritis, but a plain radiography, bone scintigraphy, and magnetic resonance imaging revealed an insufficiency fracture in the lateral shaft of the left proximal femur. She had been treated with a bisphosphonate for 4.5 years because of a previous vertebral fracture. Her chronic, long-term rheumatoid arthritis and history of bisphosphonate administration were considered to be associated with the development of her atypical femoral fracture. (Korean J Med 2014;87:240-244)

Asymptotic results on the spectral radius and the diameter of graphs

Cioaba, S.M.,van Dam, E.R.,Koolen, J.H.,Lee, J.H. North Holland [etc.] 2010 Linear Algebra and its Applications Vol. No.

We study graphs with spectral radius at most 322 and refine results by Woo and Neumaier [R. Woo, A. Neumaier, On graphs whose spectral radius is bounded by 322, Graphs Combinatorics 23 (2007) 713-726]. We study the limit points of the spectral radii of certain families of graphs, and apply the results to the problem of minimizing the spectral radius among the graphs with a given number of vertices and diameter. In particular, we consider the cases when the diameter is about half the number of vertices, and when the diameter is near the number of vertices. We prove certain instances of a conjecture posed by Van Dam and Kooij [E. R. Van Dam, R. E. Kooij, The minimal spectral radius of graphs with a given diameter, Linear Algebra Appl. 423 (2007) 408-419] and show that the conjecture is false for the other instances.

Impact of early diagnosis on functional disability in rheumatoid arthritis

( Dam Kim ),( Chan-Bum Choi ),( Jiyoung Lee ),( Soo-Kyung Cho ),( Soyoung Won ),( So-Young Bang ),( Hoon-Suk Cha ),( Jung-Yoon Choe ),( Won Tae Chung ),( Seung-Jae Hong ),( Jae-Bum Jun ),( Young Ok Ju 대한내과학회 2017 The Korean Journal of Internal Medicine Vol.32 No.4

Background/Aims: To determine whether early diagnosis is beneficial for func-tional status of various disease durations in rheumatoid arthritis (RA) patients. Methods: A total of 4,540 RA patients were enrolled as part of the Korean Obser-vational Study Network for Arthritis (KORONA). We defined early diagnosis as a lag time between symptom onset and RA diagnosis of ≤ 12 months, whereas patients with a longer lag time comprised the delayed diagnosis group. Demo-graphic characteristics and outcomes were compared between early and delayed diagnosis groups. Logistic regression analyses were performed to identify the im-pact of early diagnosis on the development of functional disability in RA patients. Results: A total of 2,597 patients (57.2%) were included in the early diagnosis group. The average Health Assessment Questionnaire-Disability Index (HAQ-DI) score was higher in the delayed diagnosis group (0.64 ± 0.63 vs. 0.70 ± 0.66, p < 0.01), and the proportion of patients with no functional disability (HAQ = 0) was higher in the early diagnosis group (22.9% vs. 20.0%, p = 0.02). In multivariable analyses, early diagnosis was independently associated with no functional disability (odds ratio [OR], 1.19; 95% confidence interval [CI], 1.01 to 1.40). In a subgroup analysis according to disease duration, early diagnosis was associated with no functional disability in patients with disease duration < 5 years (OR, 1.37; 95% CI, 1.09 to 1.72) but not in patients with longer disease duration (for 5 to 10 years: OR, 1.07; 95% CI, 0.75 to 1.52; for ≥ 10 years: OR, 0.92; 95% CI, 0.65 to 1.28). Conclusions: Early diagnosis is associated with no functional disability, especial-ly in patients with shorter disease duration.

The safety of cesarean myomectomy in women with large myomas

( Dam Hye Kwon ),( Ji Eun Song ),( Kyung Ran Yoon ),( Keun Young Lee ) 대한산부인과학회 2014 Obstetrics & Gynecology Science Vol.57 No.5

Objective To evaluate the safety of cesarean myomectomy in large myomas sized >5 cm. Methods One hundred sixty-five pregnant women with myomas who delivered via cesarean section were identified. Ninety-six women had cesarean section without myomectomy, and 65 women underwent cesarean myomectomy. We compared the maternal characteristics, neonatal weight, myoma types, and operative outcomes between two groups. We further analyzed cesarean myomectomy group according to myoma size. The large myoma was defined as myoma >5 cm in size. The maternal characteristics, neonatal weight, and myoma types were compared between two groups. We also compared the operative outcomes such as preoperative and postoperative hemoglobin, operative time, and hospitalized days between two groups. Results There were no significant differences in the maternal characteristics, myoma types, neonatal weight and operative outcomes between cesarean section without myomectomy and cesarean myomectomy. The subgroup analysis according to myoma size (>5 cm or not) in cesarean myomectomy group revealed that there were no significant differences in the mean hemoglobin change (1.2 vs. 1.3 mg/dL, P=0.6), operative time (90.5 vs. 93.1 minutes, P=0.46), and the length of hospital stay (4.7 vs. 5.2 days, P=0.15) between two groups. The comparison of maternal characteristics, neonatal weight, and myoma types between two groups also showed no statistical significance. Conclusion Cesarean myomectomy in patients with large myomas is a safe and effective procedure.

Poster Session : PS 0354 ; Epidemiology and Public Health : Prevalence and Associating Factors with Atypical Femoral Fractures: An Asian Single Center Based Case-Control Study

( Dam Kim ),( Yoon Kyoung Sung ),( Soo Kyung Cho ),( Mink Yung Han ),( Yee Suk Kim ) 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1

Background: Current evidence suggests that there is an association between bisphosphonate use and atypical femoral fractures (AFFs). However, the extent of this risk remains unclear, especially in Asian population. In this study, we aimed to estimate the proportion of AFFs among total patients with femoral fractures and to compare the characteristics of patients with AFFs with that of patients with classic femoral fractures (CFFs). Methods: A total of 578 female patients with low-energy femoral fractures who had been hospitalized at an Asian single university hospital were retrospectively enrolled. Patients were classifi ed into two groups according to the site of fracture: AFF group for patients with subtrochanteric or diaphyseal femoral fractures and CFF group for patients with intertrochateric or neck fractures. We assessed the association of bisphosphonate use and AFFs with using multivariate logistic regression analysis. Results: Twenty-seven patients (4. 7%) with AFFs and 551 patients (95. 3%) with CFFs were identifi ed. Of the patients with AFFs, 11 (40. 7%) had been treated with bisphosphonates compared with 40 (7. 3%) in the CFF group. With adjusting the age, body mass index, types of injury (slip or fall), and history of rheumatoid arthritis, bisphosphonate was the only predictor for atypical fractures (OR 9. 8, CI 3. 7-26. 4). Among the patients with using bisphosphonate when they fractured (n=44), the proportionof AFFs was nearly 21% (n=9). The proportions of AFFs among femoral fractures were increased according to the duration of bisphosphonate; 15. 4% (n=6) in patients with <5 years and 60% (n=3) in patients =5 years, respectively. Conclusions: The proportion of AFFs was around 5% among the patients with femoral fractures and AFF were associated with bisphosphonate use in Asian ethnicity. Longer duration of treatment resulted in augmented risk, though any period in bisphosphonate use could cause atypical femur fracture.

Inheritance of the Cracking Characteristics of Abscission Layer and its Relation with the Degree of Grain Shedding

Dam Xuan Van,진일두 한국작물학회 2009 Journal of crop science and biotechnology Vol.12 No.4

Seed shattering is an undesirable characteristic of rice cultivars affecting field loss of grain yield before and during harvesting. This research was designed to clarify the inheritance of the cracking characteristics of abscission layers formed between the rice grains and its pedicel using F2 populations derived from the crossing of Milyang 23 and Ashahi. The results indicated that the cracking characteristic of Milyang 23 was dominant to absence of cracking in Ashahi, and controlled by a single dominant gene. The degrees of grain shedding were somewhat related with the cracking characteristics of the abscission layer. The breaking tensile strengths closely correlated with the diameter of the supporting zone, the thickness of sclerenchyma tissue between the inner side of abscission layer and the central vascular tissues in the lemma side, and in the palea side, respectively. Some negative correlations were observed between the breaking tensile strengths and some agronomic traits such as plant height, culm length, panicle length, number of matured grains, and the ratio of fertility.