• Title/Summary/Keyword: traditional experiments

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Learning the Civilization of Modern Science and Technology through Animation Film: Focusing on Michel Ocelot's (애니메이션 감상을 통한 근대 과학기술 문명 탐구 - 미셸 오슬로의 <세 명의 발명가>를 중심으로)

  • Youn, Kyung Hee;Choi, Jeongyoon;Park, Yooshin
    • Cartoon and Animation Studies
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    • s.49
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    • pp.267-297
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    • 2017
  • This paper attempts a close-reading of Michel Ocelot's short animation film, (1979), and proposes it as an available text in art appreciation class for young students. stimulates the students' attention and intellectual curiosity thanks to the exotic and fantastic atmosphere, beautiful mise en scene, and intriguing plot. Ocelot's technique of decoupage used in this film rejuvenates both the traditional folk art and Lotte Reiniger's early experiments in the history of animation film. Ocelot subverts the ideal of modern male adult subject as unique possessor of scientific knowledge and technology, by adopting a female figure and a young child, who is also female, as main characters. The imaginative and subversive power of animation contributes to creating posthuman beings beyond the homocentric figure of Vitruvian Man. The posthuman condition supposes that human beings have the equal relationship of continuum with not only other humans but also non-human beings like all living things and inanimate matters. In order to teach and learn the posthuman condition, it is necessary to conceive an interdisciplinary and integrated curriculum including art, science, philosophy, history, and social sciences. Animation film serves excellently as educational text for the integrated curriculum of the posthuman.

Control of Fusarium Wilt of the Strawberry Caused by Fusarium oxysporum f. sp. fragariae of Solarization with Compost and Calcium Cyanamide Application (태양열 소독시 유기물과 석회질소 병행 처리에 의한 딸기 시들음병균 방제)

  • Nam, Myeong-Hyeon;Kim, Hyeon-Suk;Kim, Hong-Gi
    • Research in Plant Disease
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    • v.17 no.1
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    • pp.32-37
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    • 2011
  • Field experiments were conducted to evaluate the effectiveness of soil solarization at the Nonsan Strawberry Experiment Station, Korea in 2006 and 2008. In in vitro tests, exposure times to achieve an $LD_{100}$ of Fusarium oxysporum f. sp. fragariae were 6.6 days and 5.1 days at $45^{\circ}C$ and $50^{\circ}C$, respectively. A 100% lethal temperature was $46.7{\pm}0.1^{\circ}C$ for the same fungus. For field trials, solarization was conducted during the summer season using polyethylene mulch in a plastic house. The organic matter+calcium cyanamide+solarization treatment increased pH, organic matter, and calcium content compared to those before treatment in soil analysis, but no effect had an urea+solarization treatment. The temperatures at 10 cm depth were different in each treatment and the highest temperature was recorded from July 30 to August 10. The average temperature in organic matter+calcium cyanamide+solarization treatment at 10 cm depth was $3{\sim}4^{\circ}C$ higher than that in all the other treatments. All solarization treatments reduced the soil population of F. oxysporum f. sp. fragariae at 100% in 2008 relative to the non-treated control. All solarization treatments reduced Fusarium wilt incidence to 0% in 2006 and 2008. The effect of organic matter+calcium cyanamide+solarization against F. oxysporum f. sp. fragariae indicates that there may be future alternatives to traditional solarization for disease control as well as reducing the time needed.

EXperimental Studies on the Hair Growth Activity of Mylabris Phalerata Pall. Extracts and Fractions in C57BL/6N Mice (C57BL/6N 생쥐에서 반모추출물과 분획물을 이용한 발모(發毛)효과에 대한 실험적 연구)

  • Jo, Han-Young;Kim, Tae-Heon;Kim, Ho;Jeong, Han-Sol;Lee, Chang-Hyun;Lee, Gwang-Gyu
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.22 no.2
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    • pp.357-364
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    • 2008
  • Mylabris is the dried body of the chinese blister beetle. The species used in medicine are Mylabris phalerata and M. cichorii. In recent studies, it has been found that Mylabris possesses antitumor properties, increases the number of leukocytes, and has irritant effects on the urinary organs. The crude extracts of Mylabris have been noted for their highly irritant action and other traditional uses of Mylabris include treatment of poor local blood circulation. The active constituent of Mylabris is cantharidin. The chemical is notable for its vesicant properties, but with severe side effects such as nephrotoxicity. This experiment examined the effect of extracts and fractions, obtained from Mylabris phalerata Pall. on hair growth activity of the C57BL/6N mice after topical application to skin. First, we examined the effect of an extracts, obtained from the alcohol extracts of dried Mylabris phalerata Pall. on hair growth activity of the C57BL/6N mice after topical application to skin. Second, we examined on hair growth activity of the cantharidin fraction of Mylabris phalerata Pall. compared to the control and 1% minoxidil groups. Third, we investigated the number of hair follicle and mast cells after topical application of extracts of Mylabris phalerata Pall. to skin for 16 days. The results were as follows: Hair growth effect from the extracts of Mylabris phalerata Pall.(0.312%) was observed in 80% of mice whose hair had been removed in 13 days. Hair growth effect from the extract of Mylabris phalerata Pall.(0.312 and 0.625%) and 1% minoxidil group was observed in 100% of mice whose hair had been clipped in 20 days. Hair growth effect from the cantharidin fraction(0.5%) and water fraction(0.5%) of Mylabris phalerata Pall. was observed in 100% of mice whose hair had been clipped in 24 days. The hair growth effect on the cantharidin fraction(0.125%) was observed to be strong compared with the minoxidil(3%) group, commercial hair growth agents, in mice whose hair had been clipped in 19 days. In the spontaneous alopecia mice model, the hair growth effect from the cantharidin fraction (0.125%) was observed to be strong as compared with the states before the 13 days experiment. These experiments suggest that extracts and fractions of Mylabris phalerata Pall. may stimulate the topical hair growth activity in low doses.

Comparison of Growth Characteristics and Active Ingredients in Atractylodes Inter-Specific Hybrid Cultivars (삽주 육성품종 간 생육특성 및 유효성분 분석)

  • Jeong, Jin Tae;Lee, Hee Jung;Lee, Jeong Hoon;Hong, Chung Oui;Lee, Yun Ji;Jeong, Yang Seon;Lee, Dae Young;Lee, Seung Eun;Chang, Jae Ki;Ha, Bo Keun;Park, Chun Geon
    • Korean Journal of Medicinal Crop Science
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    • v.26 no.3
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    • pp.220-226
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    • 2018
  • Background: Atractylodes japonica Koidz. and Atractylodes macrocephala Koidz. belong to the family (Asteraceae). Their rhizomes, called white Atractylodes rhizomes, are used in traditional medicine. To address some issues with their cultivation, we recently developed eight hybrid cultivars by interspecific hybridization of A. japonica and A. macrocephala. This study was conducted to screen the hybrid cultivars that have high amounts of active ingredients and yield ability. Methods and Results: Experiments were conducted using the eight hybrid cultivars and A. macrocephala (control cultivar) in the experimental field of the department of Herbal Crop Research located in Eumseong, South Korea. We investigated the growth characteristics of the aerial and underground parts. Among the cultivars, 'Sanwon' had the highest rhizome dry weight (53.8 g/plant), followed by 'Dachul' (50.0 g/plant). In addition, the content of atractylenolide I, II, III and total active ingredients were investigated using high-performance liquid chromatography. Compared with A. macrocephala, most of the inter-specific hybrid cultivars had a higher content of active ingredients and yield ability. Conclusions: Through study, we established the superior quality of Atractylodes inter-specific hybrid cultivars. In particularly, it was found that 'Dachul' may be grown as a superior cultivar, with high amount of active ingredients as well as yield ability.

Spectmscopic and Magnetic Properties of Yanggiseok, Yeonok and Eumgiseok used as Mineral Medicine (광물성 한약으로 이용되는 양기석, 연옥,음기석의 분광학적 및 자기적 특성)

  • 김선옥;박맹언;정율필
    • Economic and Environmental Geology
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    • v.35 no.4
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    • pp.317-323
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    • 2002
  • Mineral medicines are single or mixtures of minerals and rocks which have been used to treat disease. Recently, their application has been increased by emphasizing the physical properies of the medicines, in addition to their chemical properies. In this study, mineralogical, chemical, spectroscopic and magnetic properties were measured using X-ray diffraction analysis, X-ray fluorescence spectrometry, Ff-Infrared spectroscopy, nuclear magnetic resonance spectroscopy, mass magnetic susceptibility. Experiments were done using these properties to evaluate application of traditional mineral medicines such as Yanggiseok, Yeonok and Eumgiseok. Mineralogical study proves that Yanggiseok, generally known as tremolite, consists of actinolite. Yeonok for medical usage mostly consists of fine grained tremolite. Eumgiseok is mainly composed of vermiculite and minor kaolinite and halloysite. Yeonok and Yanggiseok, belong to the amphibole group among inosilicates and both have similar emission power properties. The intensity of emission power, calculated from FT-IR measurements, follows in the order of Yeonok, Yanggiseok and Eumgiseok at 40$^{\circ}$C and Yanggiseok, Yeonok and Eumgiseok in such order at 150$^{\circ}$C. As a result of NMR analysis after 20 days in distilled water, the three mineral medicines decreased in the following order; Eumgiseok, Yanggiseok and Yeonok. However, the same minerals decreased in the order of Eumgiseok, Yeonok and Yanggiseok after 80 days. In response temperature, magnetic susceptibility of Yanggiseok and Eumgiseok systematically increased by heating to 25$^{\circ}$C, 100$^{\circ}$C and 700$^{\circ}$C. Magnetic susceptibility of Yeonok shows a decreasing pattern due to heating.

Adipocyte Differentiation Inhibitor Isolated from the Barks of Phellodendron amurense (황백(Phellodendri Cortex)으로부터 분리한 지방세포 분화 저해물질)

  • Kim, Kyung-Hee;Ahn, Soon-Cheol;Lee, Myung-Sun;Kweon, Oh-Song;Oh, Won-Keun;Kim, Min-Soo;Sohn, Cheon-Bae;Ahn, Jong-Seog
    • Korean Journal of Food Science and Technology
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    • v.35 no.3
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    • pp.503-509
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    • 2003
  • For the development of the anti-obesity natural drug, the inhibitor of adipocyte differentiation was screened from Korean traditional medicinal plants. Phellodendri Cortex was selected as a candidate of adipocyte differentiation inhibitor. An inhibitory compound PC-4 was purified from the methanol (MeOH) extract of Phellodendri Cortex using silica gel and ODS RP-18 column chromatography and HPLC. PC-4 was obtained as yellow powder; UV ${\lambda}_{max}$ (MeOH): 230, 260, 340 and 430 nm. The chemical structure of PC-4 was determined as an isoquionoline alkaloid, berberine, on the basis of various NMR experiments including $^1H-\;and\;^{13}C-NMR$. The PC-4 inhibited the differentiation of preadipocyte NIH-3T3 L1 cells at a concentration of $1\;{\mu}g/mL$.

Evaluation of Low-cost MEMS Acceleration Sensors to Detect Earthquakes

  • Lee, Jangsoo;Kwon, Young-Woo
    • Journal of the Korea Society of Computer and Information
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    • v.25 no.5
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    • pp.73-79
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    • 2020
  • As the number of earthquakes gradually increases on the Korean Peninsula, much research has been actively conducted to detect earthquakes quickly and accurately. Because traditional seismic stations are expensive to install and operate, recent research is currently being conducted to detect earthquakes using low-cost MEMS sensors. In this article, we evaluate how a low-cost MEMS acceleration sensor installed in a smartphone can be used to detect earthquakes. To this end, we installed about 280 smartphones at various locations in Korea to collect acceleration data and then assessed the installed sensors' noise floor through PSD calculation. The noise floor computed from PSD determines the magnitude of the earthquake that the installed MEMS acceleration sensors can detect. For the last few months of real operation, we collected acceleration data from 200 smartphones among 280 installed smartphones and then computed their PSDs. Based on our experiments, the MEMS acceleration sensor installed in the smartphone is capable of observing and detecting earthquakes with a magnitude 3.5 or more occurring within 10km from an epic center. During the last several months of operation, the smartphone acceleration sensor recorded an earthquake of magnitude 3.5 in Miryang on December 30, 2019, and it was confirmed as an earthquake using STA/LTA which is a simple earthquake detection algorithm. The earthquake detection system using MEMS acceleration sensors is expected to be able to detect increasing earthquakes more quickly and accurately.

Quality characteristics of Weissella confusa strain having gluten degradation activity from salted seafood (젓갈로부터 분리된 글루텐 분해능을 가지는 Weissella confusa 균주와 특성)

  • Yoon, Jong Young;Hwang, Kwontack
    • Food Science and Preservation
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    • v.23 no.6
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    • pp.883-889
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    • 2016
  • A new lactic acid bacteria with gluten-degrading activity which was isolated from salted sea foods (traditional Korea fermented food), identified as Weissella confusa (99%) by use of API kit and 16S rRNA sequencing, and designated as W. confusa. When the W. confusa cultured for 48 hours at $30^{\circ}C$ in a MRS medium containing 1% gluten, 45% of gluten was founded to be degraded. W. confusa showed 85% of survival rate at pH 3, and 94% tolerance at 0.1% oxgall, which indicates that W. confusa would survive in stomach of human. Experiments on the thermostability was confirmed that it has a stability of 70% in $50^{\circ}C$. W. confusa inhibited the growth of some pathogen, except for S. aureus. Results in this study suggest that using W. confusa for fermentation of grain flour containing gluten would be desirable to prepare the gluten-free foods needed for those who suffer from celia disease and gluten allergy.

A Novel Cooperative Warp and Thread Block Scheduling Technique for Improving the GPGPU Resource Utilization (GPGPU 자원 활용 개선을 위한 블록 지연시간 기반 워프 스케줄링 기법)

  • Thuan, Do Cong;Choi, Yong;Kim, Jong Myon;Kim, Cheol Hong
    • KIPS Transactions on Computer and Communication Systems
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    • v.6 no.5
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    • pp.219-230
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    • 2017
  • General-Purpose Graphics Processing Units (GPGPUs) build massively parallel architecture and apply multithreading technology to explore parallelism. By using programming models like CUDA, and OpenCL, GPGPUs are becoming the best in exploiting plentiful thread-level parallelism caused by parallel applications. Unfortunately, modern GPGPU cannot efficiently utilize its available hardware resources for numerous general-purpose applications. One of the primary reasons is the inefficiency of existing warp/thread block schedulers in hiding long latency instructions, resulting in lost opportunity to improve the performance. This paper studies the effects of hardware thread scheduling policy on GPGPU performance. We propose a novel warp scheduling policy that can alleviate the drawbacks of the traditional round-robin policy. The proposed warp scheduler first classifies the warps of a thread block into two groups, warps with long latency and warps with short latency and then schedules the warps with long latency before the warps with short latency. Furthermore, to support the proposed warp scheduler, we also propose a supplemental technique that can dynamically reduce the number of streaming multiprocessors to which will be assigned thread blocks when encountering a high contention degree at the memory and interconnection network. Based on our experiments on a 15-streaming multiprocessor GPGPU platform, the proposed warp scheduling policy provides an average IPC improvement of 7.5% over the baseline round-robin warp scheduling policy. This paper also shows that the GPGPU performance can be improved by approximately 8.9% on average when the two proposed techniques are combined.

A PIVOT based Query Optimization Technique for Horizontal View Tables in Relational Databases (관계 데이터베이스에서 수평 뷰 테이블에 대한 PIVOT 기반의 질의 최적화 방법)

  • Shin, Sung-Hyun;Moon, Yang-Sae;Kim, Jin-Ho;Kang, Gong-Mi
    • The KIPS Transactions:PartD
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    • v.14D no.2
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    • pp.157-168
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    • 2007
  • For effective analyses in various business applications, OLAP(On-Line Analytical Processing) systems represent the multidimensional data as the horizontal format of tables whose columns are corresponding to values of dimension attributes. Because the traditional RDBMSs have the limitation on the maximum number of attributes in table columns(MS SQLServer and Oracle permit each table to have up to 1,024 columns), horizontal tables cannot be directly stored into relational database systems. In this paper, we propose various efficient optimization strategies in transforming horizontal queries to equivalent vertical queries. To achieve this goral, we first store a horizontal table using an equivalent vertical table, and then develop various query transformation rules for horizontal table queries using the PIVOT operator. In particular, we propose various alternative query transformation rules for the basic relational operators, selection, projection, and join. Here, we note that the transformed queries can be executed in several ways, and their execution times will differ from each other. Thus, we propose various optimization strategies that transform the horizontal queries to the equivalent vertical queries when using the PIVOT operator. Finally, we evaluate these methods through extensive experiments and identify the optimal transformation strategy when using the PIVOT operator.