• Journal of The Korean Association For Science Education
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• v.39 no.4
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• pp.511-523
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• 2019

In this age of the $4^{th}$ industrial revolution, we, science educators, are giving more light on students' agentic behavior in the process of educating future scientist. This study, with the analytic lens of epistemic agency, explores the key stages of a student-driven R&E program rather than the scientist-led R&E program. It also examines to understand the emergence of students' epistemic agency in each stage of R&E. Data from participant observation for 18 months and in-depth interviews were collected and analyzed with the constant comparative method of grounded theory. This study identifies and describes five key stages of student-driven R&E: The stage of exploring research theme, designing research, performing lab activity, interpreting results, and communicating research. It also finds that (a) students' epistemic agency emerged with the constant interactions with the R&E structure; (b) students' epistemic agency has deep relations with the epistemic beliefs of the students; (c) students positioned themselves as decision-makers in the R&E practice; (d) the redistributed power and authority of the R&E contributed to the emergence of students' epistemic agency.

• Korean Journal of Medicinal Crop Science
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• v.16 no.1
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• pp.20-26
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• 2008

Anemarrhena asphodeloides (Korean name "Ji-Mo") has been used for oriental medicinal purposes in Korea, China and Japan. In this study, 29 A. asphodeloides samples were collected including 3 certified A. asphodeloides plants and many commercially marketed A. asphodeloides products. Chloroplast trnL-F regions of the "Ji-Mo" samples were sequenced and used to identify whether the samples were genuine A. asphodeloides or not. As the result, the trnL-F sequences of all the "Ji-Mo" samples were shown to be identical and it was proven that commercially available medicinal products "Ji-Mo" are genuine A. asphodeloides. Phylogenetic tree of. A. asphodeloides using the trnL-F sequences was constructed and compared with phylogenetic tree using rubisco large subunit (rbcL) gene sequences. In these tree, A. asphodeloides was affiliated in the family Agavaceae in the order Asparagales. It is proven that trnL-F phylogenetic tree is useful to study taxonomic position of A. asphodeloides.

• Journal of the korean academy of Pediatric Dentistry
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• v.28 no.3
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• pp.441-446
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• 2001

Flumazenil is a competitive antagonist of benzodiazepines. It is usually administered intravenously. However, if the intravenous route is not available then other routes of drug administration should be considered. This study was designed to evaluate the reversal effects of flumazenil after nasal administration. Twenty-five young, healthy adult volunteers participated in this clinical trial. The dosage of 0.08mg/kg midazolam was administered intravenously to induce deep sedation. Ten minutes after midazolam administration, 0.5mg of flumazenil was dropped nasally, over a period of one minute. Blood samples were taken to measure the concentration of midazolam and flumazenil at 0, 5, 10, and 20min after nasal administration of flumazenil, using High Performance Liquid Chromatography. The degree of sedation was evaluated with sedation score and bispectral index (BIS), Statistical analysis was performed by multivariate ANOVA and correlation analysis (P<0.05). Peak serum flumazenil concentration was reached in 10min. Sedation score decreased after midazolam administration and showed a significant increase after flumazenil administration. However, BIS decreased during the first 10min after midazolam administration and then no significant changes after flumazenil administration. There were two instances representing rapid and complete reversal of midazolam after intranasal administration of flumazenil. In conclusion, intranasal flumazenil administration may be effective in some patients when intravenous route is not available in condition of benzodiazepine overdose.

• Journal of the Korea Concrete Institute
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• v.21 no.4
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• pp.501-511
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• 2009

This study was conducted to develop self-healing ability of concrete so that inspection could be available even in the event of minute cracks without complex works at any time for more economic concrete structure maintenance and longevity. A completely different method has been carried out in comparison with many of similar researches on self-healing concrete. This is a basic study on the development of self-healing concrete using microbial biomineralization. Compounds were generated except for cells by precipitation reaction of CaC$O_3$ during the microbial metabolism and we examined the use as a binder that hardens the surface of sand using biomineralization that Sporosarcina pasteurii precipitates CaC$O_3$. In result, the formation of new mineral and hardening of sand surface could be verified partly, and it was available for cracks to be repaired by calcite with organic (microorganism) and inorganic (CaC$O_3$) complex structure through the basic experiment a little bit. Therefore the use of biomineralization by this sort of microbial metabolism for concrete structure helps to develop absolute repair-concrete like this concrete with microorganism. The effect of microbial application will be one of the most important research tasks having influence on not only repair for concrete structure but also development of new materials able to reduce environmental problems.

• The Korean Journal of Pharmacology
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• v.24 no.2
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• pp.189-195
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• 1988

This study aimed to investigate the autonomic innervations of human vas deferens and the effect of diazepam, a benzodiazepine sedative antianxiety drug, on the smooth muscle contractility of vas deferens. The specimens were obtained from healthy volunteers undergoing elective vasectomy with local anesthesia. The muscle preparation did not show any spontaneous contraction, but showed a good contraction induced by norepinephrine exerting the strongest response at $33^{\circ}C$. Phentolamine inhibited the norepinephrine-induced contraction concentration-dependently. Isoproterenol, a beta-adrenergic agonist evoked a considerable extent of contraction, and this contractile activity was antagonized by propranolol, a beta-adrenergic blocking agent. Acetylcholine induced a dashing contraction of the human vas deferens, and atropine, a muscarinic receptor blocking agent abolished the acetylcholine-induced contraction. Diazepam inhibited the norepinephrine-induced contraction in a concentration dependent manner. These results suggest that the smooth muscle of human vas deferens has cholinergic muscarinic and beta adrenergic receptors as well as the predominant alpha adrepergic receptor. Diazepam inhibits the motility, especially norepinephrine-induced contraction of human vas deferens.

• The Journal of the Korea Contents Association
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• v.6 no.11
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• pp.145-153
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• 2006

'Regardless of our consciousness, Color is the energy that we are affected by positively or negatively.' said Johannes Itten. When we see the color in nature, the color acts to our emotion most preferentially and most strongly. These experiences of color become symbol or icon to us and express states of his mind as allegory. The color of animation is the visual element of image media, the image which act as important meaning, the attribute of light, and visual-perceptional factor. With molding factor form, light and shade, the color function importantly as media which express a person and a person's circumstance. In animation, the color is used symbolically to suggest not only mental change of character but also the condition. The transmission of mental meaning express symbolism of the color iconically. Accordingly, the color for image express of animation take on universality. This study focus on how the symbolical meaning of the color is reflected in a work.

• Science of Emotion and Sensibility
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• v.17 no.4
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• pp.41-50
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• 2014

This study examined the characteristics of brain's reaction pattern concerning the preference for product images and compared them with the result of subjects' intuitive evaluation of their preference for the same materials. Two tests were conducted; the first one that calculated comfort properties based on brainwave measurements in order to examine the impression given by the images of products presented separately, one-by-one, and the second one that had subjects evaluate the preference directly by comparing the images of all products simultaneously. The first test was titled 'Independent Cognitive Response' and the second test, 'Relative Cognitive Response', and their characteristics were as follows. In the 'Independent Cognitive Response', the state of emotion was expressed in absolute values based on the comparison with the information accumulated through the subject's own experience and the feeling expressed as 'pleasant' or 'unpleasant' persisted as absolute values. In the 'Relative Cognitive Response', the state of emotion relative to the information of other images compared in the stage of perceiving the images was expressed, and in this case, the state of emotion described as 'calm' or 'excited' acted as relative values.

• The Optical Journal
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• s.167
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• pp.19-23
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• 2017

최근 국내 실물경기는 수출 부진이 지속되는 가운데 건설투자 중심으로 내수가 완만하게 증가하는 추이를 보이고 있다. 내수는 설비투자가 부진한 반면 건설투자가 높은 증가세를 보이면서 전체 성장을 주도하고 있고, 민간소비는 완만한 증가세를 지속하고 있다. 수출은 전년에 이어 감소세가 지속 중이나, 금년들어 감소폭이 줄어들고 있다. 전체적으로 수출 부진에 따른 성장 둔화를 건설투자가 보전하는 구조로, 경제성장의 건설투자 의존이 심화되는 특징을 보이고 있다. 2017년 세계경제는 완만한 회복세가 이어지면서 전년보다 소폭 높은 성장을 보일 것으로 예상된다. 선진권의 경우 비교적 꾸준하고 완만한 성장세가 이어질 것이나, 중국은 완만한 성장 둔화 추이가 이어질 전망이다. 유가는 세계경제의 소폭 개선과 OPEC의 감산 합의 등으로 2017년 중 평균 배럴당 50달러 내외로 높아질 전망이며, 원/달러 환율은 연중 비교적 높은 변동성을 보이겠지만, 연평균 기준으로 전년과 비슷한 수준(1,150원대)이 예상된다. 2017년 국내경제는 수출 부진이 다소 완화되겠지만, 2016년 경제성장을 견인해 온 건설투자 증가세가 크게 둔화되고 구조조정 등이 민간소비 증가를 제약하면서 전년보다 약간 낮은 2.5% 내외 성장을 보일 것으로 예상된다. 전기비로는 상${\cdot}$하반기 비슷한 성장이 예상되지만, 전년 패턴의 기저효과로 전년동기비 성장률은 소폭의 上低下高 흐름이 예상된다. 대외적으로는 미국 신정부의 정책 기조와 연준의 금리인상, 중국의 성장 둔화 폭 확대 가능성 등이, 국내적으로는 가계부채 문제와 구조조정 여파 등이 주요 변수로 작용할 전망이다. 부문별로 살펴보면 민간소비는 유가 반등에 따른 소득 증가세 둔화, 가계부채 부담, 구조조정 여파 등이 제약요인으로 작용하면서 전년보다 소폭 낮은 연간 2% 내외의 증가세가 예상된다. 설비투자는 수출 부진의 완화에 힘입어 소폭 증가세가 예상되며, 건설투자는 전년의 높은 증가에 따른 기저효과와 건설규제 등에 따라 증가세가 크게 둔화될 전망이다. 수출은 세계경제의 소폭 개선과 유가 반등에 따른 단가 하락세 진정 등으로 증가세로 돌아설 것이나, 매우 완만한 흐름이 예상된다. 2017년 수출은 2.1%, 수입은 3.6% 증가하면서 무역수지는 전년보다 약간 줄어든 857억 달러의 흑자를 보일 전망이다.

• Journal of Digital Convergence
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• v.18 no.7
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• pp.405-410
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• 2020

Fashion is a visual means of expressing identity, position, marital status, personal inclination, etc. along with beauty, and it is an important practical cultural heritage that can infer past lifestyle habits. In modern society, fashion such as women's suits, high heels, hats, gloves, handbags, necklaces, etc., as well as beauty such as hair, make-up and nail art. It is a model of innovative women's prize and presented a sample of femininity that responds to the radical development of science and technology in the 21st century. Therefore, it is a driving force for a genuine gender equality society. It serves as a stepping stone for futuristic future design. This study, which analyzed the factors of women's sexuality from the viewpoint of beauty college students in the fashion style of the newcomers, makes it possible to present a sample of women' s sexuality that establishes constructive self - help theory. It is thought that a solid foundation of femininity will be provided.

• Journal of the Institute of Convergence Signal Processing
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• v.20 no.1
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• pp.37-44
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• 2019

Recentrly, early dental care for children is becoming more important, and the number of children patients' dental services is on the rise. So, a variety of seduction therapies are needed to alleviate the tension in children who are anxious about dental care. This paper describes the development process and contents of system that can display the animation of different stories according to the treatment stage by grasping the use state of the treatment device in real time. In the animation, the hreo character and the villain, the cavity character, appear and the hero defeat the villain at each treatment stage. Animation is played when treatment starts and ends after treatment. Current existing one-side played animation of dental clinics is not enough to attract children's attention. If the flow of animation changes depending on the treatment process, it will give children a different enjoyment and consequently ease the tension over the treatment.