• Korean Journal of Ichthyology
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• v.31 no.3
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• pp.123-130
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• 2019

The olfactory organ of the Korean endemic fish, Rhodeus uyekii, a mussel-spawning species, was researched anatomically, histologically and histochemically, for looking into a relation to the physical and chemical condition of its habitat and ecological habit, using stereo microscopy, light microscopy and scanning electron microscopy. The external structure of the olfactory organ consists of the semicircular-shaped anterior nostril with arched shape at its forward position, posterior nostrils and the nasal flap. Within the olfactory chamber, it has the rosette structure with 14 to 15 lamellae which is largely divided into the sensory and non-sensory regions. The sensory region has the olfactory receptor neurons, the supporting cells, the basal cells, the lymphatic cells, and the plasma cells, while the non-sensory region has the stratified epithelial cells, the mucous cells with sulfomucin and 1 type of unidentified cell. In particular, the arched feature in the anterior nostril and the mucous cell of sulfomucin were unique.

• The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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• v.24 no.1
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• pp.30-48
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• 2019

The year 2018 is the $50^{th}$ anniversary of scientific ocean drilling. Nevertheless, we know more about the surface of the moon than the Earth's ocean floor. In other words, there are still no much informations about the Earth interior. Much of what we do know has come from the scientific ocean drilling, providing the systematic collection of core samples from the deep seabed. This revolutionary process began 50 years ago, when the drilling vessel Glomar Challenger sailed into the Gulf of Mexico on August 11, 1968 on the first expedition of the federally funded Deep Sea Drilling Project (DSDP). DSDP followed successively by Ocean Drilling Program (ODP), Integrated Ocean Drilling Program (old IODP), and International Ocean Discovery Program (new IODP). Concerning on the results of scientific ocean drilling, there are two technological innovations and various scientific research results. The one is a dynamic positioning system, enables the drilling vessel to stay fixed in place while drilling and recovering cores in the deep water. Another is the finding of re-entry cone to replace drill bit during the drilling. In addition to technological innovation, there are important scientific results such as confirmation of plate tectonics, reconstruction of earth's history, and finding of life within sediments. New IODP has begun in October, 2013 and will continue till 2023. IODP member countries are preparing for the IODP science plan beyond 2023 and future 50 years of scientific ocean drilling. We as IODP member also need to participate in keeping with the international trend.

• Journal of Korean Elementary Science Education
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• v.41 no.2
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• pp.418-431
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• 2022

In this study, we analyzed the form, presentation, and interactivity of external representations presented in the matter units of elementary school science digital textbooks developed under the 2015 Revised National Curriculum. The analytic framework of the previous study was modified and supplemented. The matter units in the 3rd-6th grade science digital textbooks were analyzed by dividing them into "body texts" and "inquiries" area. The results revealed that visual-verbal and visual-nonverbal representations were presented the most. Conversely, audial-nonverbal representations were presented at a high frequency only in the body texts, and audial-verbal representations were presented at a low frequency in both the body texts and the inquiries. Regarding the presentation, when verbal and visual-nonverbal representations appeared together, visual-verbal and visual-nonverbal representations were primarily presented together. In some cases where visual-verbal, audial-verbal, and visual-nonverbal representations were presented together, information on visual-verbal and audial-verbal representations was presented redundantly. Audial-nonverbal representations unrelated to contents were presented along with other external representations, and the frequency was particularly high in the body texts. Regarding the contiguity, no visual-verbal and visual-nonverbal representations were presented on different pages, and no audial-verbal representations were presented asynchronously with visual-nonverbal representations. Regarding the interactivity, explanatory feedback and low-level manipulations were mainly presented. Based on the results, implications to improve digital textbooks are discussed from the perspective of multiple representation-based learning.

• Journal of Dental Rehabilitation and Applied Science
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• v.39 no.3
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• pp.133-145
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• 2023

Class III malocclusion with mandibular protrusion can be divided into skeletal and pseudo malocclusion due to tooth displacement. For skeletal malocclusion, favorable treatment results can be obtained by establishing an appropriate vertical and horizontal intermaxillary relationship in order to secure a restoration space and obtain aesthetic and functional results. In this case, complete mouth rehabilitation was performed using an implant and a fixed prosthesis in a patient with mandibular protrusion and anterior teeth wear and reduced occlusal vertical dimension. After cast analysis and digital diagnosis, a provisional restoration with increased vertical dimension was fabricated to secure posterior support and evaluate stable centric occlusion. With the definitive prosthesis reflecting the provisional restoration, favorable function and aesthetics were obtained.

• Journal of Information Management
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• v.40 no.3
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• pp.41-60
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• 2009

This study utilizes DEA/Window analysis in order to investigate the relative efficiency levels of korea national university libraries during the period of transition 2004-2008. The empirical results show the following findings. Firstly, a technical efficiency was not efficient which was a scale efficiency rather than a pure technical efficiency in 2008. Secondly, a technical and pure technical efficiency has increased steadily from 2004 to 2008(but a technical, pure technical efficiency has decreased since in 2008). As a result, a technical efficiency increase can be explained by a pure technical efficiency increase.

• Journal of The Korean Association For Science Education
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• v.18 no.1
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• pp.109-121
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• 1998

Scientific literacy implies an adequate understanding of the nature of science. However, little is known about factors that can influence students' conceptions of the nature of science. The purpose of this study was to test the validity of the prevalent assumption that teachers' philosophical perspectives of science directly influence their students' conceptions of the nature of science. A comparison between science teachers' and students' perspectives of science did not support the assumption that a science teachers' perspectives of science is significantly related to students' conceptions of science. The data clearly indicated that there was no relationship between teachers' philosophical perspectives and those of their students. The results convincingly indicated that the nature of science was not being considered or taught to students as a consequence of students' needs and curriculum guide objectives. It is believed that the results of this investigation will help to redirect the focus of future efforts to promote more adequate conceptions of the nature of science in our secondary schools.

• Journal of Korean Elementary Science Education
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• v.40 no.3
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• pp.407-419
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• 2021

This study investigated the perception of science philosophy education targeting 150 elementary school teachers in metropolitan cities and provinces. The questionnaire survey on the perception of the philosophy of science education was composed of a 5-point Likert scale based on the interest and experience of the philosophy of science, the reason for difficulty in using it, and the introduction method, the expected effect. As a result of the survey, elementary school teachers' awareness of the interest and necessity of the philosophy of science was generally high, while the experience of learning and teaching the philosophy of science was low. In addition, to the reason why it was difficult to utilize the philosophy of science, teachers answered that there was insufficient teacher training and development of teaching and learning methods. As a way to introduce the philosophy of science in science education, it was thought that it was necessary to combine the concept learning and inquiry method, and elementary school teachers' perception of the expected effect of using the philosophy of science was generally high. The results of this study are meaningful in that they provide basic data on the direction of the introduction of the philosophy of science in elementary science education.

• Proceedings of the Korean Statistical Society Conference
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• 2002.11a
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• pp.69-73
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• 2002

본 발표에서는 베이지안이 생각하는 확률의 개념을 상호교환성(exchangeability)의 가정아래 어떻게 확장되어 해석되는지를 소개하고, 빈도학자들의 접근방법과 비교함으로서 베이지안에서 생각하는 확률이 어떠한 특징을 가지고 있는지를 설명하고자 하였다. 또한 Efron에 의하여 지적된 베이지안의 네 가지 문제점에 대하여 논의하고 특별히 과학적 객관성(scientific objectivism)의 한계점과 이러한 한계점을 베이지안에서 어떻게 해결하고 있는지에 대하여 논의하였다. 일반적으로 과학적 객관성에 대한 한계점은 빈도학자들의 방법론에서도 존재하게 된다. 즉, 연구자가 가설을 설정하고 이에 맞는 실험설계를 하고 유의수준을 설정하고 p값을 이용하여 의사결정을 내리는 모든 단계에서 연구자의 주관성이 들어갈 수밖에 없게 된다는 것이다. 베이지안 방법론에서는 이러한 비객관적인 체계를 인정하고 파악하여 사전확률(prior)에 포함시킴으로서 이를 객관적인 자료인 가능도함수(likelihood function)와 혼합하여 추론이나 의사결정을 진행하게 된다. 마지막으로 베이지안 학자들의 최근 객관적인 사전확률에 대한 다양한 형태의 연구를 소개하는 것으로 발표를 마무리하고자 한다.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2005.10a
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• pp.217-220
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• 2005

과학기술이 국가경쟁력에서 차지하는 비중이 높아지면서, 국가 차원에서 과학기술역량의 확충을 위한 다양한 정책적 노력이 경주되고 있으며, 그 일환으로 정부연구개발사업과 관련된 예산도 지속적으로 증가하여 왔다. 이와 함께 최근 들어 공공부분에 책무성(accountability)에 대한 논의와 함께 성과주의 제도의 적극적인 도입이 검토되고 있다. 특히 다양한 특성을 가진 많은 정부사업들이 적절하게 추진되고 있는지 그 성과를 측정하고 관리하는 것은 책무성의 이행이라는 측면에서 상당히 중요하다. 이에 따라 성과를 보다 명확히 측정할 수 있는 도구의 필요성과 함께 균형성과표(Balanced Scorecard: BSC)가 새롭게 조명을 받고 있다. 본 연구에서는 BSC의 기본모형을 확장하여 정부연구개발사업에 적용해 보고자 한다.

• Proceedings of the Korea Technology Innovation Society Conference
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• 2010.05a
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• pp.248-262
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• 2010

국가의 산업 발전이 성장에 한계에 다다르고 그 성장 수준이 고도화 된 국가일수록, 서비스 산업은 그 중요성이 부각되고 있다. 우리나라 역시 서비스 산업의 국내 GDP의 60%이상을 점유하는 만큼 고도의 서비스 산업국가로 분류될 수 있겠으나, 서비스 산업의 경쟁력이 주요 선진국들과 차이가 나는 것이 사실이며, 부가가치가 높은 핵심 지식서비스 산업 분야에서의 격차는 더 크다. 이에 국내 서비스 산업의 경쟁력 강화가 제시되고 있으며, 그에 일환으로 서비스 사이언스(Service Science)에 대한 논의가 활발히 이루어지고 있다. 본 논문에서는 미래성장동력인 서비스 산업의 급부상과 관련하여 서비스 분야에서도 기존의 제조업과 같은 생산성과 효율성을 증가시키기 위해서 더욱 과학적이고, 체계적인 방법론을 연구해야하는 필요성이 제기되고 있다. 이러한 서비스 혁신의 개념은 서비스의 생산성, 품질, 평가, 지속 가능성, 혁신 등에 대하여 연구하는 서비스 사이언스(Service Science)에 대한 논의로 귀결되고 있다. 본 논문은 서비스 혁신사례로써 기술을 도입하여 기업의 성과를 크게 끌어올린 월마트 사례와 최첨단 기술이 융합 접목된 복합 산업적 공간으로 다양한 경제적 활동이 수반되는 인천국제공항공사를 중심으로 서비스 산업에서의 과학기술의 역할에 대해서 살펴보고, 그에 관련된 개념과 시사점을 제기하고자 한다.