• Proceedings of the KOR-BRONCHOESO Conference
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• 1982.05a
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• pp.15.2-15
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• 1982

Inverted papilloma arising from mucous membrane of the nasal cavity and paranasal sinuses is very rare benign neoplasm. Ward first described nasal papilloma in 1854, but its infrequent occurrence has delayed accurate understanding. This tumor was histologically benign neoplasm and clinically malignant, because it is locally invasive with extensive bone erosion at times and it shows a high incidence of local recurrence, and change of squamous cell carinoma was sometimes found. Recently, the authors have experienced a case of inverted pailloma with focal squamous cell carcinoma change which occupied the right side of the nsal cavity and maxillary sinus in a 48-year-old male. The tumor mass was removed surgically through intranasal and Caldwell-Luc's approach, and then was treated with systemic administration of Bleomycin, local spray of 5-FU and radiotherapy ($Co^{60}$). We report our case with review of current literatures.

• Journal for History of Mathematics
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• v.24 no.2
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• pp.47-59
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• 2011

Various mathematical models have been widely studied recently in both fields of mathematics and ecology since they help us understand the dynamical process of population changes in biological species living in a certain habitat and give useful predictions. The world population model proposed by Malthus, a British economist, in his work 'An Essay on the Principle of Population' published in the period of 1789~1826 is one of the early mathematical models on population changes. Malthus' models and the carrying capacity models of Verhulst in 1845 were based on exponential type functions. The independent research field of mathematical ecology has been started from Lotka's works in 1920's. Since then various different mathematical models has been proposed and examined. This article mainly deals with single species population change models expressed in terms of ordinary differential equations.

• Journal for History of Mathematics
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• v.22 no.3
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• pp.171-186
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• 2009

$Poincar\acute{e}$ is mathematician and the episodes in his mathematical invention process give suggestions to scholars who have interest in how mathematical invention happens. He emphasizes the value of unconscious activity. Furthermore, $Poincar\acute{e}$ points the complementary relation between unconscious activity and conscious activity. Also, $Poincar\acute{e}$ emphasizes the value of intuition and logic. In general, intuition is tool of invention and gives the clue of mathematical problem solving. But logic gives the certainty. $Poincar\acute{e}$ points the complementary relation between intuition and logic at the same reasons. In spite of the importance of relation between intuition and logic, school mathematics emphasized the logic. So students don't reveal and use the intuitive thinking in mathematical problem solving. So, we have to search the methods to use the complementary relation between intuition and logic in mathematics education.

• Archives of design research
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• v.17 no.4
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• pp.337-346
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• 2004

Many researchers have been explored job satisfaction in various context. Nevertheless, there are no empirical researches on the advertising designers's job satisfaction in Korea. This research is an exploratory examination regarding Korean advertising designers's organizational behaviour. In general, job satisfaction is determined by two major factors; personal and organizational factor. This research shows that korean advertising designers's job satisfaction is mainly determined by the organizational factor such as payment and promotion. Promotion was particularly significant amongst them and recognition also proved to be influential. Synthetically, the determining factors of advertising designers's job satisfaction consists of several predictors such as payment, promotion, and human relationships. This result may gives an assumption that the agencies have not provided designers with specialized evaluation system reflecting designers' job characteristics. Thesis concludes that agencies need to set a new evaluation and payment systems in order to elevate designers' job satisfaction in organization.

• Science of Emotion and Sensibility
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• v.13 no.1
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• pp.215-224
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• 2010

This paper is designed to investigate the attributes of sound and emotion resided in traditional Eastern thought by looking into acoustic theories such as Sunguarakron (聲有哀樂論) in Akgi(樂記), Sungmuaerakron(聲無哀樂論) of Haegang and Akhakgebum(樂學軌範), Chongiron(天機論) in Choson(朝鮮) dynasty. Six types of emotions, namely sadness, pleasure, happiness, anger, respect, and, affection (哀心, 樂心, 喜心, 怒心, 敬心, 愛心) which is related with sounds was closely reviewed through Akgi(樂記). Also attributes of sounds such as loudness, sharpness, pitch, roughness, fluctuation strength and pleasantness was corresponded with plain & complicated(單複), pitch, good & bad(善惡) slow & fast(舒疾), loud & quiet(猛靜) respectively. In addition to this, this paper is narrowed down that the basic ideas about sound and emotions of Choson(朝鮮) confucian scholar was based on theory of music and rhythm on Akgi(樂記). Furthermore, the relationship between expressed sound and emotions which was revealed in Chongiron(天機論) has been examined. Finally, various applied research and studies will be promoted through this study, because this study will provide foundation which supports sounds and emotions of Eastern.

• Animal Systematics, Evolution and Diversity
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• v.12 no.2
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• pp.121-136
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• 1996

In order to understand affinities and phylogeny of three families of the Superfamily Entomobryoidea allozyme analysis was performed with three species presumably representing each family, in addition to four species belonging to the neighboring Superfamily Poduroidea together. Electrophoresis for this purpose produced data for calculating allele frequency and enabled to obtain genetic distance and to depict dendrograms as well. The species of Isotomidae, Entomobryidae and Tomoceridae were clustered together whereas those of Hypogastruridae, Onychiuridae and Neanuridae were grouped as monophylies, respectively. Even though Tomoceridae and Entomobryidae were brought together they are considered complete families by showing high genetic distance value between them, thus supporting the hypothesis on their affinity among others. Gulgastrura reticulosa has been revealed to be separated from Hypogastruridae by being clustered rather with Onychiuridae. However, its high genetic distance value suggests the status as an independent family. The present result agreed with the phylogeny of Suborder Arthropleona divided into two Superfamilies mentioned above as in conventional systematics and also when compared with analysis of data of their morphological characters as well as 18S rDNA performed and published elsewhere by the present writers.

• Korean Journal of Soil Science and Fertilizer
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• v.37 no.4
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• pp.288-291
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• 2004

The development of land classification and soil productivity rating systems (SPR) are examined for their application to valuation of agricultural land in South Dakota, USA. For current and impending environmental and agricultural land issues, there is virtually no hard data available. Therefore, the study works with government and private sector clients to identify needs, and develop and apply a variety of techniques to mine data and carry out appropriate assessment methods. The application of SPR data to land valuation work conducted by real estate appraisers, tax assessors, and economists are discussed along with an assessment of its benefits and limitations. However, the actual value of the agricultural land can be determined by fulfilling the agricultural's vision of protecting and improving the environment by agricultural activities besides the safe food production. Therefore, it is increasingly important that we understand the impacts of farming and forestry on land, water and air.

• Journal of Chest Surgery
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• v.31 no.7
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• pp.711-717
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• 1998

Background: Although various anastomotic techniques and suture materials have been used in esophageal anastomosis, anastomotic leakage and stenosis are still somewhat frequent and serious complications when compared to other intestinal anastomoses. We have used interrupted single-layer suture technique using monofilament polypropylene suture in various esophageal anastomoses, including repair of the esophageal atresia, since 1990. Methods and method: We retrospectively evaluated the efficacy of this technique on postoperative leakage and stenosis in several esophageal reconstructions. The esophageal reconstructions using this technique were performed in 90 patients at Dong-A University Hospital from April 1990 through December 1996. Results: Anastomotic leakage occurred in 5 patients(5.6%) with one operative death. Stenosis at the anastomotic site occurred in 15 patients(n=86, 17.4%), which was most common in esophagogastrostomy(22%) and least common in esophagocolostomy (5%). This result was comparable to other methods including the autosuture technique. Conclusions: We concluded that this suture technique in esophageal anastomosis can be used with reasonable results in various esophageal reconstructions including correction of the esophageal atresia.

• Korean Journal of Social Welfare
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• v.57 no.3
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• pp.277-304
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• 2005

The review of the literature shows that analysts tend to follow two approaches in their investigation of the differences in terms of the development of welfare state. The first approach focused on the logic of industrialization. In this account, technological and structural changes rather than political choices of ideological preferences and culture create the conditions for the emergence of welfare state. The second approach emphasizes the importance of the growth of unionization for the development of welfare state. However, this study analyses the development of welfare state by using cultural theory developed by Mary Douglas. Culture theory has a specific point of departure : the grid-group typology proposed by Mary Douglas. Group refers to the extent to which an individual is incorporated into bounded units. Grid denotes the degree to which an individual's life is circumscribed by externally imposed prescriptions. Hierarchical culture (high grid-high group) favors social conservatism, giving government the right to intervene in matters of social institutions. Germany and Japan belong to this culture. Individualistic culture (low grid-low group) reluctant to develop social insurance programs. Individuals who are bound by neither group incorporation nor prescribed roles inhabit an individualistic social context. Great Britain and the United Sates of America belong to this culture. Egalitarian culture (low grid-high group) prefer to develop social insurance program. Strong group boundaries couples with minimal prescriptions produce social relations that are egalitarian. Sweden belong to this culture.

• KOMUNHWA
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• no.56
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• pp.215-245
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• 2000

필자는 이 글을 통해 제주도 고고학 발달사를 크게 4기로 구분하여 보았다. 제1기는 1945년 이전 일제강점기에 유적과 유물을 단순하게 보고하는 수준에 머물렀던 시기이고 제2기는 1945년에서 1983년 기간으로 향토사가와 한국 본토의 고고$\cdot$역사학자들의 부분적인 학술조사가 있었던 시기이다. 따라서 1$\~$2기는 제주 고고학의 기본적인 틀을 잡지 못한 단계라고 할 수 있다. 제3기는 1984년부터 1995년까지로 제주고고학에 있어 본격적인 발굴이 진행되지만 대부분이 긴급 발굴에 해당하고 소규모적인 발굴이었다. 하지만 이 시기에 와서 그 동안 발굴했던 자료와 그 이전의 발굴자료를 모아 나름대로 제주고고학의 시대 편년, 문화 변천 등의 기본적인 틀과 방향을 설정한 시기이기도 하다. 제4기는 1996년 이후 현재까지로 제주고고학의 기본적인 틀 속에서 이를 보완하고 새로운 선사문화의 단계를 설정하는 연구들이 진행 중이다. 이를 뒷받침하는 계기는 제주 고산리유적, 삼양동유적 등이 연차적, 계획적, 대대적으로 발굴되면서 많은 자료가 나왔기 때문이다. 또한 고고학의 범위가 선사시대에 국한되지 않고 제주목관아지, 성읍객사지, 법화사지, 존자암지, 수정사지, 고내현청터 등 역사유적의 출토자료에 대한 관심이 더욱 집중되기에 이르렀다. 제주도내 매장문화재는 발굴된 유적 대부분이 지정되어 있는 상태이다. 제주목관아지(사적 390호), 항파두리성(사적 396호), 고산리유적(사적 412호), 삼양동유적(사적 416호)로 지정되었다. 제주도 지석묘는 총 24기가 지방기념물로 지정되어 있으며 발굴했던 선사유적 중 곽지패총, 북촌리바위그늘집자리, 용담동무덤유적이 지정되어 있다. 역사유적 중 법화사지, 존자암지가 지정되었고 일부 유적지는 복원 중이다. 제주도 문화재를 보존하고 활용하기 위해서는 강화된 새로운 문화재법의 적절한 활용, 매장문화재 발굴 전문기관 설립, 발굴된 문화재의 원상보존, 문화재 주소록 작성, 문화재 행정 전문인력의 확보, 제주문화재의 상징물 선정과 활용, 지역문화재홍보위원의 위촉과 다양한 문화유산 프로그램의 개발을 들었다.