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      • KCI등재후보
      • 2차원 스토커 소각론의 SNCR 탈질기술개발에 대한 수치해석

        신미수,유승민,유재관,장동순,김동찬 충남대학교 환경문제연구소 2000 環境硏究 Vol.18 No.-

        In this study was the stoker incinerator system with SNCR(Selective Non-Catalytic Reduction). While this system was favored with the view of the possibility of the reducing waste volume and recovery of waste heat, it also has a disadvantage, that is, the need for the second to treat dust, HCl, CO, etc. So far, even though a great deal of research had been done, the study on heat-flow analysis with reduction model and NO reduction with SNCR had not been investigated enough. The temperature distribution in the system and excess amount of oxygen influence the efficiency of NO reduction, resolution in the production, resolution in the production of NO at 1700K and the temperature range of 1200-1250K when the highest NOx reduction efficiency occurred. Hence, this study was focused to flow mixing pattern and NOx reduction efficiency as the flue gas velocity, NH3 injection velocity, particle size and particle density.

      • 초등영어 교사 양성 프로그램 연구

        李美載 水原大學校 1997 論文集 Vol.15 No.-

        This paper is to study the existing programs to train elementary English teachers: Special program for elementary teachers, Incheon Education University English curriculum, Korea Teachers' University curriculum, Graduate School program of Chungang University and Graduate School program of the University of Suwon and overseas program for elementary teachers. However, they are not enough to meet the need of the language user as an elementary teacher. The number of teachers until 2000 to cover all elementary school from third grade to the sixth grade is 65,348. Therefore my suggestions to produce efficient teachers are 1) to use the already existed program by adding more practices to theory, 2) to use fluent language users by training elementary education program and children's psychology and so on needed for a good language manager and language analyst and teacher, 3) to establish programs for returning teachers repeatedly, 4) to support the elementary teachers who want to become elementary English teachers in terms of finance and teaching and adminstration load, 5) to make a continuous contact with native English teacher-training teacher regularly.

      • 纖維藝術의 발달사 : 現代, 1900年代를 中心으로

        李美載 淸州大學校 1984 論文集 Vol.17 No.2

        This thesis is to define the general conception of Fiber-Art and to analyse the forming of Fiber-Art from old ancient times to the present. Also this Study involves the process development of fiber materials and their technical development in refining process. This Paper reaches an conclusion that the historical development of technical method in fiber materials becomes the essence of the development of Fiber-Art. In the analysis the Paper concentrates on the changes of fiber materials in accordance with each period in History and technical developments in producing and processing fiber materials. This study divides the history of Fiber-Art into several categories. In general Fiber-Art deals mainly with fiber materials from the begining but now handels with a Variety of materials not only fibers but also Papers and other materials. Accordingly the Scope of Fiber-Art expands from the basics patterns of fibers to the other fields of arts, colors etc. The first period of Fiber-Art history is from the ancient period to the 10th century. In this Period Fiber-Art relfects the Vision of human races in which individual freedom and fantasy are well expressed, the second period starts from 10th century to the time of the Renaissance. In this period Fiber-Art stresses the merits of the roman catholic tradtion in which the holiness of catholic doctrine was strongly decorated. The third period occupies from the Renaissance to the 19th century. Fiber-Art in this period deals with various characteristics stemming from romanticism, classical expressionism, realism and so on. The fourth Period beginns from the 19th century to the mid-twentieth century. In this Period Fiber-Art involves the Character of Bauhaus movement which emphasized the intergration of various kinds of art trations. The fifth period extends from the mid-twentieth Century to the present. contempory Fiber-Art stresses the utilization of a variety of mechanisms including Vedio instruments, electronic apparatus in the tradtion of current realistic arts. As the instruments in developing Fiber-Art expands in their Scope, Fiber-Art has become one of the modern integration in which a variety of expressionism can be realized following the use of a number of materials. In technical senses the various materials dealt in Fiber-Art also encourage the development of various methodogies both in producing and processing aspects.

      • KCI등재

        유착 유구치의 처치에 관한 증례보고

        최병재,이제호,장미라,이종갑 大韓小兒齒科學會 1997 大韓小兒齒科學會誌 Vol.24 No.3

        Ankylosis is defined as a fusion of alveolar bone with dentin and/or cementum and may occur at any time during or following active eruption. Ankylosed teeth maintain existing occlusal levels while adjacent teeth continue to erupt via deposition of alveolar bone. This may result in th clinical apperarance of depression or submergence of ankylosed teeth below the occlusal plane. It is found more frequently in children of late mixed dentition and in mandibular primary molars. The problems arising from ankylosed teeth, due to their submerged positions, are elongation of the antagonist, tipping of the adjacent teeth, loss of arch length, food impaction and subsequent destruction of periodontal tissue, disturbance of succedaneous tooth eruption. The author observed several cases fo ankylosed primary molars and properly managed. Following results were obtained. 1. Severe infraoccluded ankylosis results in loss of arch length and undesirable effect on eruption path of succedaneous tooth, therefore early diagnosis and management are important. 2. The teeth without problems may be examined periodically and restored in order to maintain the normal occlusal function.

      • 한국 국가경쟁력 제고를 위한 Brand launching 연구 : DDfTF(Digital Design for Textile Fashion)을 중심으로

        이미재 청주대학교 학술연구소 2008 淸大學術論集 Vol.11 No.-

        The textile industry of Korea has been rapidly developed for the past 40 years. Despite of its rapid growth, it stands on a downhill today as the industry is in identity crisis. This is the consequences of running towards manufacturing and other parts of the industry therefore neglecting the development and significance of "design" sector within the textile industry. In terms of technologies and competitiveness in quality within the international market, European countries such as Italy, France and Japan in Asia are far more advanced than Korea. On the other hands, many Southeast Asian countries and China are overtaking Korean textile industry in terms of competitiveness in price. Hence today, there is the dilemma of taking "high roads" of technologies and design or "low road" of adjusted lower price. In the given dilemma, Korea should take the "high road," upbringing the technology and design. The main focus of the thesis is "Brand launching." Designing products and further launching it as a brand to enhance competitiveness of Korean textile industry in the global market: this would also contribute to building a new image to Korea’s textile design and industry: formally Korea carries the negative image of "products with imitated designs especially in fashions and accessories" Hence the objective with the "Brand launching" is making attempts to regain the declined international credibility of the industry through launching a brand with creative and original Korean design. This is the given task for the current generation, which is to be carried on with next generation. The redeemed international level of national creditability, the afresh image of Korean textile industry would leave leverage on sectors other than just the textile industry: the redeemed national creditability of the textile industry would also reflect the general creditability of the country as a whole. Accordingly the purpose of the thesis is to put the image of the nation forward to improve negatively perceived credibility; the suggested "new spirit" of the thesis, leading to such redeemed creditability, would once more revive the national economy and brighten the future of Korea. The innovative idea of a new brand launching would be a large scaled project hence could also be very costly. However, this is the best way to launch the unique identity of Korea, Korean design, on a "new spirit."In the given proposal thesis I stress out that anew "creative spirit" with legal mind will be the motivation force for Brand launching. Yet again the logic is that "new power of new spirit" leads to Brand launching thus one should not be hesitating the project at any cost and effort. The thesis also strongly assert that outcomes of challenges and innovations done through all technology lies in the unique and distinct design of high-value added, which is born through the "creative spirit" of identity. Firmly implementing the attitudes of "no products with imitated designs," designs that will represent Korean identity should reborn under the new paradigm of "a new spirit." The Korean textile industry would mature and with its own design it would be able compete on the "high road" of the global market: finally clearing its previous image as "a land of products with imitated designs." Moreover such an image change may positively reflect on the general image of Korea including various sectors such as politics, economics, social and culture: this all together is a good chance to put Korea running on the "high-roads" "Destructive Creation"refers to destruction of creativity and "a new spirit," which serves as true fundamental thoughts for the Brand launching. The thesis concludes with the innovative contents that how people should realize that quality of life is determined by the spiritual happiness. The two required elements for a true "Innovation policy" are "will to recognize" and business of "Legal mind." Combination of these two factors brings true innovative spirit and only this kind of innovative mind would brighten the future of Korean textile industry. Consequently the innovative spirit and future should also apply to other sectors such as arts and society, economics and science after careful consideration of "will to recognize" and "Legal mind" at different angles. In conclusion, the primary objective of the business proposal is to examine the current statues of Korean textile industry, filled with products of imitated design. Then further proposing a Brand launching as a mean to create the unique Korean identity, design, to recover its declined image and refinement: the will power to do so is the future power and hope for the Korean culture and economy. Key Word : Brand launching, 새 정신, 새 힘, 창의, DTP(Digital Textile Printing), DTD(Digital Textile Design), DD(Digital Design), Recreation

      • KCI등재후보

        3교대 근로자에서 교대근무기간과 혈압 및 심박수 변동성

        하미나,김재용,박정선,정호근 대한산업의학회 2001 대한직업환경의학회지 Vol.13 No.2

        목적 : 교대근무가 심혈관계에 미치는 만성적인 영향을 살펴보기 위하여 본 연구를 수행하였다. 방법 : 4조 3교대의 빠른 순환주기의 교대근무를 하는 1개 제조업체 남성근로자 134명을 대상으로 교대근무마다 혈압 및 심박수 변동성을 측정하였다. 교란변수로서 Karasek의 직무긴장도 모델에 의거한 49항목의 직무스트레스설문지를 이용하여 직무스트레스를 측정하였고, 수면유형과 흡연, 음주력 및 과거병력 등의 사항에 관한 설문조사를 실시하였다. 반복측정 자료의 분석을 위해 mixed model을 이용한 다변량 회귀분석을 수행하여, 교대근무기간과 혈압 및 심박수 변동성과의 관련성을 살펴보았다. 결과 : 대상 근로자의 평균연령은 29 세였다(범위 25∼44). 이들 중 77.9 % 는 현재도 흡연을 하고 있었고, 50 % 는 직무긴장도 모형에서 수동형이었다. 평균 총 교대근무기간은 5.21 년(범위 5.4 개월∼10년)이었다. 수면유형검사에서는, 극단적인 아침형이나 극단적인 저녁형은 없었다. 연령, 직무스트레스, 수면유형 및 흡연을 보정한 다변량 분석에서, 혈압은 총 교대근무기간이 증가함에 따라 통계학적으로 유의하게 증가하는 소견을 보였다(p(0.05). 심박수 변동성은 저주파 및 고주파 영역 모두에서 총 교대근무기간이 증가함에 따라 유의한 감소양상을 나타냈다(p<0.05) . 결론 : 본 연구의 결과는 교대근무가 혈압을 상승시키고 심박수 변동성을 감소시키는 것으로써 심혈관계 기능에 영향을 미침을 보여주었다. Objectives : This study was performed to investigate the chronic health effect of shift-work on cardiovascular system. Methods : We checked blood pressure(BP) and heart rate variability (HRV) at every shift on 134 male workers whose shift type was 8-hour and short rotating of 3 days shift interval. As confoundings, job stress was measured by Karasek's JCQ 49 items questionnaire and circardian type was assessed by morningness-eveningness questionnaire. Smoking and alcohol drinking habit, marital status and past medical history were also acquired. We used the method of repeated measured data analysis with mixed model to show the association between shiftwork duration and BP or HRV. Results : Average age of workers was 29 years olds(range 25∼44). Among them, 77.9 % were current smokers, 50 % were the passive type of job strain in Karasek's model. Mean shiftwork duration was 5.21 years(range 5.4 months∼10 years). In circadian type, no one was definitely morning type or definitely evening type. In multivariate analyses adjusted by age, job strain, shift, circadian rhythm and smoking, blood pressure were showed significantly increasing trends according to shiftwork duration in both systolic and diastolic (p(0.05) . Heart rate variability were also showed significantly decreasing trends according to shiftwork duration in both parasympathetic and sympathetic functions (p(0.05) . Conclusions : The results of this studs suggests the chronic negative health effect of shiftwork on cardiovascular system.

      • 일부 시판 비타민 보충제의 비타민 C함량분석

        김철재,박현신,김미숙 숙명여자대학교 건강·사회과학연구소 2003 生活科學硏究誌 Vol.- No.18

        This study was carried out to analyse the vitamin C content in vitamin supplements by the HPLC method. The product types were chewable tablet, tablet and powder. After purchasing, three types of vitamin supplements were stored at two different temperatures; -18 ℃, and ambient temperature. Vitamin C content were determined by two different HPLC operation conditions: at 1^(st) experiment, Waters 600E system with Nova-Pak C_(18) column were used; and the 2^(nd) experiment was done with Shisheido Nanospace 51-2 with Capcell pak UG80 C_(18) column. As the result, vitamin C contents at 1^(st) and 2^(nd) experiments, expressed as the ratio of determined to declared amounts were estimated 1.09~1.98 times and 1.30~2.34 times more than the declared amount at -18℃ , respectively. At ambient temperature, the vitamin C contents were 0.99~l.86 and 0.82~l.85 times higher than the declared amounts at the 1" and 2f experiments, respectively. The ratio increase at -18℃ were not so much as at ambient storage. However, both at -18 ℃ and ambient storage, the determined amounts of vitamin C were more than the declared amount. In conclusion, vitamin C was intaked more than RDA as well as the amount of vitamin C including its dietary intake was more than 1,000 ㎎/day in some vitamin supplements according to their own direction and/or dosage indicated.

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