• 제목/요약/키워드: History of research

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수학 협동학습의 역사적 고찰 (A Historical Study of Cooperative Learning for Mathematics)

  • 이중권
    • 한국수학사학회지
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    • 제18권2호
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    • pp.55-74
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    • 2005
  • 본 논문은 수학 교육방법 개선을 위한 노력의 하나로 학습 모델에 대하여 연구하였다. 그 중 특히 협동학습 유형을 역사적으로 종합 정리하고 협동학습의 이론적 배경과 소집단 협동학습의 필요성 그리고 협동학습과 전통 조별학습의 차이점 등을 조사하였다. 또한 협동학습에서 나타나는 특징과 다양한 협동학습의 유형을 제시하고 그 효과에 대하여 연구를 하였다. 본 연구에서는 역사적으로 수학교육학적 견지에서 의미 있는 협동학습 유형으로 팀보조개별학습(TAI: Team-Assisted Individualization), 직소우(JIGSAW) 협동 학습, 직소우II(JIGSAW II) 협동 학습, 직소우III(JIGSAW III) 협동 학습, STAD(Student Team-Achievement division) 협동학습, 팀경쟁 협동학습(TGT: Teams-Games-Tournament) 등을 집중적으로 연구하였다.

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Preparedness of Siddha system of medicine in practitioner perspective during a pandemic outbreak with special reference to COVID-19

  • Rajalakshmi, S.;Samraj, K.;Sathiyarajeswaran, P.;Kanagavalli, K.
    • 셀메드
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    • 제10권4호
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    • pp.29.1-29.6
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    • 2020
  • COVID-19 (Corona Virus Disease-2019) is an infectious respiratory disease caused by the most recently discovered coronavirus, SARS-CoV-2 (Severe Acute Respiratory Syndrome Corona virus-2). This new viral disease was unknown before the outbreak began in Wuhan, China, in December 2019. As of November 16th 2020, it affects about 54.3 million populations, death troll increased to 1.32 million cases in worldwide. Whereas in India 8.85 cases are infected with COVID-19, of which 1, 30, 112 cases were died. Till now there has been no specific anti-virus drug or vaccines are available for the treatment of this disease, the supportive care and non-specific treatment to the symptoms of the patient are the only options in Biomedicine, the entire world turns its attention towards alternative medicine or Traditional medicine. Siddha medicine is one of the primordial systems of medicine practiced in the southern part of India, it dealt a lot about pandemic, and its management. This review provides an insight into Pandemic in Siddha system and its management in both ancient history and modern history, National and state level Government policies related to current pandemic, World Health Organization (WHO) guidelines on usage of unproven drug during infectious disease outbreak, Preparedness of Siddha system during a pandemic outbreak Challenges and Recommendations.

Live birth in a woman with recurrent implantation failure and adenomyosis following transfer of refrozen-warmed embryos

  • Safari, Somayyeh;Faramarzi, Azita;Agha-Rahimi, Azam;Khalili, Mohammad Ali
    • Clinical and Experimental Reproductive Medicine
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    • 제43권3호
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    • pp.181-184
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    • 2016
  • The aim was to report a healthy live birth using re-vitrified-warmed cleavage-stage embryos derived from supernumerary warmed embryos after frozen embryo transfer (ET) in a patient with recurrent implantation failure (RIF). The case was a 39-year-old female with a history of polycystic ovarian syndrome and adenomyosis, along with RIF. After ovarian hyperstimulation, 33 cumulus-oocyte complexes were retrieved and fertilized with conventional in vitro fertilization and intracytoplasmic sperm injection. Because of the risk of ovarian hyperstimulation syndrome, 16 grade B and C embryos were vitrified. After 3 and 6 months, 3 and 4 B-C warmed embryos were transferred to the uterus, respectively. However, implantation did not take place. Ten months later, four embryos were warmed, two grade B 8-cell embryos were transferred, and two embryos were re-vitrified. One year later, the two re-vitrified cleavage-stage embryos were warmed, which resulted in a successful live birth. This finding showed that following first warming, it is feasible to refreeze supernumerary warmed embryos for subsequent ET in patients with a history of RIF.

Improvement on optimal design of dynamic absorber for enhancing seismic performance of nuclear piping using adaptive Kriging method

  • Kwag, Shinyoung;Eem, Seunghyun;Kwak, Jinsung;Lee, Hwanho;Oh, Jinho;Koo, Gyeong-Hoi
    • Nuclear Engineering and Technology
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    • 제54권5호
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    • pp.1712-1725
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    • 2022
  • For improving the seismic performance of the nuclear power plant (NPP) piping system, attempts have been made to apply a dynamic absorber (DA). However, the current piping DA design method is limited because it cannot provide the globally optimum values for the target design seismic loading. Therefore, this study proposes a seismic time history analysis-based DA optimal design method for piping. To this end, the Kriging approach is introduced to reduce the numerical cost required for seismic time history analyses. The appropriate design of the experiment method is used to increase the efficiency in securing response data. A gradient-based method is used to efficiently deal with the multi-dimensional unconstrained optimization problem of the DA optimal design. As a result, the proposed method showed an excellent response reduction effect in several responses compared to other optimal design methods. The proposed method showed that the average response reduction rate was about 9% less at the maximum acceleration, about 5% less at the maximum value of the response spectrum, about 9% less at the maximum relative displacement, and about 4% less at the maximum combined stress compared to existing optimal design methods. Therefore, the proposed method enables an effective optimal DA design method for mitigating seismic response in NPP piping in the future.

한국노동패널 사례보고

  • 장지연
    • 한국조사연구학회:학술대회논문집
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    • 한국조사연구학회 2000년도 추계학술대회 발표논문집
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    • pp.171-200
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    • 2000
  • 한국노동패널조사(Korea Labor and Income Panel Study)는 비농촌지역에 거주하는 한국의 가구와 가구원을 대표하는 패널표본구성원(5,000가구에 거주하는 가구원)을 대상으로 1년에 1회 경제활동 및 노동시장 이동, 소득 활동 및 소비, 교육 및 직업훈련, 사회생활 등에 관하여 추적 조사하는 종단면 조사(longitudinal survey)이다. 매년 반복적인 조사를 통해 표본가구구성원들에 대한 다양한 내용의 정보를 수집하는 가운데 조사년수가 늘어가면서 표본가구원 개인들의 생애과정(Life Course)에 걸친 단계별 변화와 이동의 이력, 특히 학교교육력(Schooling History), 취업력(Work History) 혹은 노동시장이동(Labor Market Transitions) 과정이 구축될 수 있을 것이다. 조사구의 추출방법은 계통추출방법을 사용하였으며, 제주도를 제외한 전국의 시부만을 대상으로 1,000개의 조사구를 선정하고, 각 조사구내에서는 97년 고 3965;의 조사대상가구 중에서 5가구를 임의 선정(random sampling)하였다.다.

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현대 361개 경혈체계를 마련한 19세기 『침구봉원』의 침구의학과 침구경락 음양론 발전상 의의 (History of Acupuncture Medicine Witnessed the Setting of Modern Set of 361 Acupoints in the Classical Title of 19th Century, 『Exploring the Origin of Acupuncture Medicine (針灸逢源)』)

  • 정일경;이혜정;인창식
    • 턱관절균형의학회지
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    • 제9권1호
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    • pp.1-3
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    • 2019
  • Objectives: "Exploring the origin of acupuncture medicine (針灸逢源)", a classical title of acupuncture medicine in the 19th century, has been reviewed with focus on its impact on the standardization of acupoint in the history of acupuncture medicine as an approach of yin-yang balancing medicine like the Temporomandibular joint Balancing Medicine. Methods: A narrative review of literature was performed with a focus on continuous development and revision of the knowledge system of acupuncture medicine in medical education and clinical application. Results: This title has provided a systematized knowledge on acupoint-acupuncutre including 361 acupoints, acupoint location, and acupoint-meridian association, which was adopted as a frame of core knowledge in modern acupuncture medicine. Critical review and rational reasoning on previously accepted but apparently incongruous strips of knowledge led to the accomplishment of this title. Conclusions: This title provided a revised and standard knowledge system in the field of medical education and clinical practice of acupuncture medicine, and also provided an exemplary model of unrelenting change and development of an approach based on the concept of yin-yang balance such as acupuncture medicine and the Temporomandibular joint Balancing Medicine.

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Comparison of Helminth Infection among the Native Populations of the Arctic and Subarctic Areas in Western Siberia Throughout History: Parasitological Researches on Contemporary and the Archaeological Resources

  • Slepchenko, Sergey Mikhailovich;Bugmyrin, Sergey Vladimirovich;Kozlov, Andrew Igorevich;Vershubskaya, Galina Grigorievna;Shin, Dong Hoon
    • Parasites, Hosts and Diseases
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    • 제57권6호
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    • pp.607-612
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    • 2019
  • The aim of this parasitological study is examining contemporary (the late 20th century) specimens of the arctic or subarctic areas in Western Siberia and comparing them with the information acquired from archaeological samples from the same area. In the contemporary specimens, we observed the parasite eggs of 3 different species: Opisthochis felineus, Ascaris lumbricoides, and Enterobius vermicularis. Meanwhile, in archaeoparasitological results of Vesakoyakha, Kikki-Akki, and Nyamboyto I burial grounds, the eggs of Diphyllobothrium and Taenia spp. were found while no nematode (soil-transmitted) eggs were observed in the same samples. In this study, we concluded helminth infection pattern among the arctic and subarctic peoples of Western Siberia throughout history as follows: the raw fish-eating tradition did not undergo radical change in the area at least since the 18th century; and A. lumbricoides or E. vermicularis did not infect the inhabitants of this area before 20th century. With respect to the Western Siberia, we caught glimpse of the parasite infection pattern prevalent therein via investigations on contemporary and archaeoparasitological specimens.

국내 학술지를 통해 살펴 본 변증(辨證)의 의미 고찰 (A Study on the Meanings of ByunJeung in Korean Medicine through the Journals Published in Korea)

  • 이태형;채윤병;김남일
    • 한국의사학회지
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    • 제27권2호
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    • pp.39-51
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    • 2014
  • Objectives : The term ByunJeung is usually used to represent the characteristic of Korean Medicine. However the meaning of ByunJeung has not been consistent. After the 1980s when Traditional Chinese Medicine was introduced into Korea, the meaning of ByunJeung in Korea became diverse. In this paper, we aimed to research how the meaning of ByunJeung has been varied. Methods : We used four major journal database in Korea to search articles related to ByunJeung. Using the terms such as "변증" and "辨證", which mean ByungJeung in Korean and Chinese, we collected 500 articles in total. Among them, we chose only 61 articles selectively which mainly focused on the meaning of ByunJeung. We categorized those according to the specific meaning of ByunJeung which each article used, and qualitatively analyzed those articles. Results : Articles related to ByunJeung were categorized into three different groups. The first group was for the articles which dealt with changing meanings of ByunJeung. The second group was for the articles which focused on the modernized meaning of ByunJeung. The third group was for the articles which was on the traditional meaning of ByunJeung. Conclusions : The term ByunJeung holds a key concept in the current field of Korean medicine. Nevertheless, since the meaning of ByunJeung has been diverse, it often caused confusion among the people who used the term ByunJeung. Therefore we need to clarify the exact meaning when we intend to use the term. Also there should be a further discussion on the meaning of ByunJeung in the field of Korean medicine to facilitate better understanding on the characteristic of Korean medicine.