• 제목/요약/키워드: Faculty development

검색결과 3,023건 처리시간 0.03초

두릅 에탄올 추출물의 Chlorogenic acid 함량 분석 및 생리활성 (Analysis of Chlorogenic Acid Content and Biological Activities of Aralia elata Ethanol Extract)

  • 이정호;정경옥;임소연;진다몬;이왕로
    • 한국자원식물학회지
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    • 제35권5호
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    • pp.574-585
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    • 2022
  • 순창군에서 생산된 두릅을 40% EtOH을 이용하여 추출한 후 chlorogenic acid 함량, 항산화, 항균, 항염 및 소화효소 활성을 측정하였다. HPLC를 이용하여 chlorogenic acid 함량을 측정한 결과 7.06±0.01 mg/g 함유되어 있었다. DPPH 라디칼 소거활성(SC50)은 4.79±0.05 mg/mL, ABTS 라디칼 소거활성(SC50)은 5.79±0.05 mg/mL, 총 폴리페놀 함량은 170.0±1.8 mgGAE/g, 총 플라보노이드 함량은 105.5±4.1 mgQE/g으로 분석되었다. RAW 264.7 세포, Caco-2 세포에서 세포독성이 나타나지 않았으며, 농도 의존적으로 NO 생성이 억제되었다. RAW 264.7 세포에서 염증성 cytokine인 TNF-α생성은 8.9±0.1 ng/mL, IL-6 생성은 15.2±0.8 ng/mL, IL-1β생성은 30.9±0.9 pg/mL으로 억제되었으며, AEE의 처리 농도가 증가함에 따라 TNF-α, IL-1β, IL-6 생성이 농도 의존적으로 억제되었다. S. typhimurium, L. monocytogenes, H. pylori에 대한 항균활성이 우수하게 나타났으며, 두릅을 EtOH 추출물의 처리농도가 증가함에 따라 효소 활성인 α-amylase와 protease 효소활성도 증가하였다. 순창군에서 생산된 두릅은 chlorogenic acid를 다량 함유하고 있으며, 항산화, 항염, 항균, 소화효소 활성이 우수하게 나타나 향후 건강기능성 소재로 개발할 수 있을 것으로 판단된다.

Rumen bacteria influence milk protein yield of yak grazing on the Qinghai-Tibet plateau

  • Fan, Qingshan;Wanapat, Metha;Hou, Fujiang
    • Animal Bioscience
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    • 제34권9호
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    • pp.1466-1478
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    • 2021
  • Objective: Ruminants are completely dependent on their microbiota for rumen fermentation, feed digestion, and consequently, their metabolism for productivity. This study aimed to evaluate the rumen bacteria of lactating yaks with different milk protein yields, using high-throughput sequencing technology, in order to understand the influence of these bacteria on milk production. Methods: Yaks with similar high milk protein yield (high milk yield and high milk protein content, HH; n = 12) and low milk protein yield (low milk yield and low milk protein content, LL; n = 12) were randomly selected from 57 mid-lactation yaks. Ruminal contents were collected using an oral stomach tube from the 24 yaks selected. High-throughput sequencing of bacterial 16S rRNA gene was used. Results: Ruminal ammonia N, total volatile fatty acids, acetate, propionate, and isobutyrate concentrations were found to be higher in HH than LL yaks. Community richness (Chao 1 index) and diversity indices (Shannon index) of rumen microbiota were higher in LL than HH yaks. Relative abundances of the Bacteroidetes and Tenericutes phyla in the rumen fluid were significantly increased in HH than LL yaks, but significantly decreased for Firmicutes. Relative abundances of the Succiniclasticum, Butyrivibrio 2, Prevotella 1, and Prevotellaceae UCG-001 genera in the rumen fluid of HH yaks was significantly increased, but significantly decreased for Christensenellaceae R-7 group and Coprococcus 1. Principal coordinates analysis on unweighted UniFrac distances revealed that the bacterial community structure of rumen differed between yaks with high and low milk protein yields. Furthermore, rumen microbiota were functionally enriched in relation to transporters, ABC transporters, ribosome, and urine metabolism, and also significantly altered in HH and LL yaks. Conclusion: We observed significant differences in the composition, diversity, fermentation product concentrations, and function of ruminal microorganisms between yaks with high and low milk protein yields, suggesting the potential influence of rumen microbiota on milk protein yield in yaks. A deeper understanding of this process may allow future modulation of the rumen microbiome for improved agricultural yield through bacterial community design.

The Role of Fundamentalization of Education in Improving the Future Specialists Professional Training with Usage of Multimedia Technologies

  • Palshkov, Kostiantyn;Kochubei, Olena;Tsokur, Olga;Tiahur, Vasyl;Tiahur, Liubomyra;Filimonova, Tetiana;Kuzminskyi, Anatolii
    • International Journal of Computer Science & Network Security
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    • 제22권9호
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    • pp.95-102
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    • 2022
  • The article considers the fundamentalization of education in improving the future specialists professional training with usage of multimedia technologies by various scientists. Various points of view and approaches to defining the concepts of fundamentalization of education and multimedia technologies are identified. The concept of fundamentalization of professional training of a future specialist is based on the goals and functions of fundamentalization and - on the ways and means of achieving it, etc. Most authors agree only in their views that the fundamentalization of education is aimed at improving the quality of education and the education of the individual. Others involve the formation of a culture and worldview, increasing the creative and intellectual potential, forming the professional competence of a specialist and the potential for further education, and so on. The term multimedia refers to interactive systems that provide processing of moving and still video images, animated graphics, high-quality audio and speech. It is found out that professional training of a specialist by means of multimedia technologies includes not only the activities of the teacher and student, which form the learning process, but also the independent activity of the subject, self-development, assimilation of experience by the subject through analysis, comprehension and transformation of the field of activity in which he is included. It is revealed through the implementation of which approaches to the fundamentalization of higher professional education, it becomes possible to fully present theoretical training courses and effectively pass practical training by students, which contributes to improving the quality of training of future specialists in higher education institutions. Theoretical analysis of scientific views indicates a fairly serious attention of scientists to the problem of professional readiness of specialists and the possibility of higher educational institutions in preparing for it. At the same time, professional readiness is considered from different positions: as an active state of a person, which manifests itself in activity; as a result of activity; as goals of activity; as a quality that characterizes the attitude to solving professional problems and social situations; as a prerequisite for purposeful activity; as a form of activity of the subject; as an integral formation of personality; as a component of socio-professional culture; as a complex professionally significant neoplasm of the individual.

Innovative Technologies in Higher School Practice

  • Popovych, Oksana;Makhynia, Nataliia;Pavlyuk, Bohdan;Vytrykhovska, Oksana;Miroshnichenko, Valentina;Veremijenko, Vadym;Horvat, Marianna
    • International Journal of Computer Science & Network Security
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    • 제22권11호
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    • pp.248-254
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    • 2022
  • Educational innovations are first created, improved or applied educational, didactic, educative, and managerial systems and their components that significantly improve the results of educational activities. The development of pedagogical technology in the global educational space is conventionally divided into three stages. The role of innovative technologies in Higher School practice is substantiated. Factors of effectiveness of the educational process are highlighted. Technology is defined as a phenomenon and its importance is emphasized, it is indicated that it is a component of human history, a form of expression of intelligence focused on solving important problems of being, a synthesis of the mind and human abilities. The most frequently used technologies in practice are classified. Among the priority educational innovations in higher education institutions, the following are highlighted. Introduction of modular training and a rating system for knowledge control (credit-modular system) into the educational process; distance learning system; computerization of libraries using electronic catalog programs and the creation of a fund of electronic educational and methodological materials; electronic system for managing the activities of an educational institution and the educational process. In the educational process, various innovative pedagogical methods are successfully used, the basis of which is interactivity and maximum proximity to the real professional activity of the future specialist. There are simulation technologies (game and discussion forms of organization); technology "case method" (maximum proximity to reality); video training methodology (maximum proximity to reality); computer modeling; interactive technologies; technologies of collective and group training; situational modeling technologies; technologies for working out discussion issues; project technology; Information Technologies; technologies of differentiated training; text-centric training technology and others.

IoT 기반의 문·이과 통합형 CT 교육 프로그램 개발 (Development of Liberal Art and Natural Science Integration Computational Thinking Education Program Based on the IoT)

  • 정상목;신수범;임택균;문성윤;전인성
    • 한국엔터테인먼트산업학회논문지
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    • 제13권4호
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    • pp.255-262
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    • 2019
  • 2015년도에 개정한 정보 교육과정은 창의 융합형 인재의 성장을 주요 목표로 제시하고 있는데, 창의 융합형 인재의 성장에서 반드시 필요한 것이 컴퓨팅 사고력(CT)이다. 본 논문에서는 창의융합형 인재 성장의 목표에 맞추어 IoT 기술과 문이과 통합과정을 정보교과 내용에 접목하였고 교수-학습 프로그램을 개발하였다. 개발한 교수-학습 프로그램의 효과를 검증하기 위하여 실험연구를 진행하였으며, 연구결과 실험집단의 평균(Mean)이 통제집단보다 10점 이상 높게 나오는 결과를 얻었다. 따라서 본 연구에서 제안한 교수-학습 프로그램이 효과가 있음을 알 수 있었다. 본 연구에서 제안한 교수-학습 프로그램은 프로그래밍 언어뿐만 아니라 IoT 기반의 CT 교육을 통해 실생활의 다양한 분야에 응용되는 SW 기술을 직접 구현하여 SW 교육에 대한 학습 동기와 흥미를 유발시킬 수 있으며 문·이과 통합형 교육을 통해 많은 교과와 융합되는 문제를 해결하고 창의적으로 설계하는 경험을 통해 융합과학적 사고력을 향상시킬 것으로 기대된다.

스포츠계열 대학생들의 핵심역량 평가에 따른 발전방안 연구 (A Study on the Development Strategies of University Students in Sports Colleges by Evaluating Core Competencies)

  • 김진국;김수현
    • 한국엔터테인먼트산업학회논문지
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    • 제13권4호
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    • pp.195-206
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    • 2019
  • 이 연구는 국내 스포츠계열 대학생들이 인식하는 핵심역량에 대한 중요도와 실행도를 분석하여 향후 미래사회가 요구하는 방향으로 스포츠계열 학생들의 역량을 강화시킬 수 있는 방향과 방법을 도출하는데 그 목적이 있다. 309명의 스포츠계열 전공 대학생들을 대상으로 분석한 결과는 다음과 같다. 첫째, 스포츠계열 대학생들이 인식하는 핵심역량의 중요도에서는 자기관리역량, 대인관계역량, 의사 소통능력, 종합적 사고력, 자원정보 기술 활용역량, 글로벌 역량의 순으로 나타났다. 둘째, 스포츠계열 대학생들이 평가하는 자신들의 핵심역량 보유 실행도는 대인관계역량, 자기관리역량, 의사소통능력, 종합적 사고력, 글로벌 역량, 자원정보 기술 활용역량의 순으로 나타났다. 셋째, 핵심역량의 중요도와 실행도의 차이는 모든 영역에서 유의한 차이가 있는 것으로 나타났고, 차이가 큰 영역은 종합적 사고력, 의사소통능력, 자원정보 기술 활용역량, 자기관리역량, 글로벌 역량, 대인관계역량의 순으로 나타났다. 스포츠계열 대학생들은 대인관계역량과 자기관리역량, 의사소통능력은 상대적으로 높이 평가한 반면 종합적 사고력, 자원정보 기술 활용역량, 글로벌 역량은 취약한 것으로 나타나, 이를 보완할 수 있는 교육과정의 변화를 통해 미래 사회가 요구하는 인재로 거듭날 수 있을 것이다. 따라서 대학은 교육과정의 혁신과 교수자의 역량 강화를 통해 경쟁력 있는 스포츠계열 인재를 양성하는 것이 필요하며, 이것이 곧 대학의 경쟁력 제고와 연결될 수 있음을 인식해야 한다.

Antimalarial effect of synthetic endoperoxide on synchronized Plasmodium chabaudi infected mice

  • Nagwa S. M. Aly;Hiroaki Matsumori;Thi Quyen Dinh;Akira Sato;Shin-Ichi Miyoshi;Kyung-Soo Chang;Hak Sun Yu;Fumie Kobayashi;Hye-Sook Kim
    • Parasites, Hosts and Diseases
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    • 제61권1호
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    • pp.33-41
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    • 2023
  • The discovery of new antimalarial drugs can be developed using asynchronized Plasmodium berghei malaria parasites in vivo in mice. Studies on a particular stage are also required to assess the effectiveness and mode of action of drugs. In this report, we used endoperoxide 6-(1,2,6,7-tetraoxaspiro [7.11] nonadec-4-yl) hexan-1-ol (N-251) as a model antimalarial compound on P. chabaudi parasites. We examined the antimalarial effect of N-251 against ring-stage- and trophozoite-stage-rich P. chabaudi parasites and asynchronized P. berghei parasites using the 4-day suppressive test. The ED50 values were 27, 22, and 22 mg/kg, respectively, and the antimalarial activity of N-251 was verified in both rodent malaria parasites. To assess the stage-specific effect of N-251 in vivo, we evaluated the change of parasitemia and distribution of parasite stages using ring-stage- and trophozoite-stage-rich P. chabaudi parasites with one-day drug administration for one life cycle. We discovered that the parasitemias decreased after 13 and 9 hours post-treatment in the ring-stage- and trophozoite-stage-rich groups, respectively. Additionally, in the ring-stage-rich N-251 treated group, the ring-stage parasites hindered trophozoite parasite development. For the trophozoite-stage-rich N-251 treated group, the distribution of the trophozoite stage was maintained without a change in parasitemia until 9 hours. Because of these findings, it can be concluded that N-251 suppressed the trophozoite stage but not the ring stage. We report for the first time that N-251 specifically suppresses the trophozoite stage using P. chabaudi in mice. The results show that P. chabaudi is a reliable model for the characterization of stage-specific antimalarial effects.

SW 교육 학습자의 인식 분석을 통한 컴퓨팅 사고력 교육 개선 방안에 관한 연구 (A Study on the Improvement of Computing Thinking Education through the Analysis of the Perception of SW Education Learners)

  • 신좌철;김영태
    • 산업융합연구
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    • 제21권3호
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    • pp.195-202
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    • 2023
  • 본 연구는 학습자의 교육적 요구를 파악하기 위해 현장에서 이루어진 수업을 바탕으로 설문조사 결과를 분석하여 SW 교육에 필요한 요소를 반영하기 위한 것이다. 본 연구에서는 선행연구를 통해 학습 동기와 학습 성취도에 따른 다양한 실험적 요소를 구성하고 설계하였다. 본 연구에 적용한 설문조사로 교수자 역량(FC), 학습자 역량(LC), 교육 여건(EC)의 3가지 부문의 실험적 요소를 1차 영역별, 2차 전공 계열별로 각각 분석하였다. CT 기반의 SW 교육을 영역별로 분석한 결과 교육자료 개발, 강의에 대한 이해, 교수방법은 만족도가 높게 나타난 반면, 수강생과의 소통, 강의의 난이도, 수강 인원은 상대적으로 낮게 나타났다. 전공별로 분석한 결과는 인문 계열에서 공학 계열보다 어렵고 흥미가 떨어지는 것으로 결과가 나타났다. 본 연구에서는 이러한 통계적 결과를 바탕으로 학습자의 문제해결 능력 향상 측면에서 향후 효과적인 교양교육을 위하여 흥미로운 교과과정으로 비전공 SW 교육이 개선되어야 할 필요성을 제시한다.

The gene expression programming method to generate an equation to estimate fracture toughness of reinforced concrete

  • Ahmadreza Khodayari;Danial Fakhri;Adil Hussein, Mohammed;Ibrahim Albaijan;Arsalan Mahmoodzadeh;Hawkar Hashim Ibrahim;Ahmed Babeker Elhag;Shima Rashidi
    • Steel and Composite Structures
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    • 제48권2호
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    • pp.163-177
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    • 2023
  • Complex and intricate preparation techniques, the imperative for utmost precision and sensitivity in instrumentation, premature sample failure, and fragile specimens collectively contribute to the arduous task of measuring the fracture toughness of concrete in the laboratory. The objective of this research is to introduce and refine an equation based on the gene expression programming (GEP) method to calculate the fracture toughness of reinforced concrete, thereby minimizing the need for costly and time-consuming laboratory experiments. To accomplish this, various types of reinforced concrete, each incorporating distinct ratios of fibers and additives, were subjected to diverse loading angles relative to the initial crack (α) in order to ascertain the effective fracture toughness (Keff) of 660 samples utilizing the central straight notched Brazilian disc (CSNBD) test. Within the datasets, six pivotal input factors influencing the Keff of concrete, namely sample type (ST), diameter (D), thickness (t), length (L), force (F), and α, were taken into account. The ST and α parameters represent crucial inputs in the model presented in this study, marking the first instance that their influence has been examined via the CSNBD test. Of the 660 datasets, 460 were utilized for training purposes, while 100 each were allotted for testing and validation of the model. The GEP model was fine-tuned based on the training datasets, and its efficacy was evaluated using the separate test and validation datasets. In subsequent stages, the GEP model was optimized, yielding the most robust models. Ultimately, an equation was derived by averaging the most exemplary models, providing a means to predict the Keff parameter. This averaged equation exhibited exceptional proficiency in predicting the Keff of concrete. The significance of this work lies in the possibility of obtaining the Keff parameter without investing copious amounts of time and resources into the CSNBD test, simply by inputting the relevant parameters into the equation derived for diverse samples of reinforced concrete subject to varied loading angles.

러시아의 우크라이나침공이 한국안보에 미치는 영향 (Effects of the Russia's Ukraine Invasion on the Korea National Security)

  • 임종화
    • 산업진흥연구
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    • 제8권3호
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    • pp.175-180
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    • 2023
  • 우크라이나는 1994년 12월 부다페스트양해각서를 통해서 국가의 주권과 영토보전 및 안전을 보장한다. 서명했던 러시아에 의해 크림반도의 침탈에 이어 2022년 2월 24일 제2의 무력침공을 받았다. 이 두 번째의 침공은 1년 2개월을 초과하는 장기전으로 가고 있다. 동(同)양해각서의 동반서명국인 미국을 향한 호소도 승산 없는 전쟁이 세계대전으로 확대될까 하는 우려로 효과가 없었다. 국가존폐위기를 모면할 수 있었던 것은 젤렌스키 대통령을 위시한 전 국민들의 단결된 결사항전정신 때문이었다. 이 애국적 자조정신이 미국을 위시한 서방의 자유민주주의 세계와 국제사회의 지원을 받게 하였고 그 강도는 날이 갈수록 증대되고 있다. 스스로를 지킨다는 자위(自衛)의지는 외부적 동맹이나 지원을 창출 한다는 것을 보이고 있다. 우크라이나전쟁이 한국에게 주는 교훈은 미래전의 형태로 부각되는 하이브리드전략과 군사적 수단과 비군사적 수단에 대한 동시통합능력을 포괄하는 독자적 국방력의 발전과 자강(自彊)의 의지 및 신뢰를 바탕으로 한 한미동맹 결속의 강화가 핵심이 되어야 함을 시사한다.