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The Status of E-learning in Elementary-Secondary Education in Korea
Inshik Jun,Somi, Kim APEC국제교육협력원 2005 Asia-Pacific Cybereducation Journal Vol.1 No.2
This paper reviews the history of E-learning policies, current status, and finally the representative cases in a sequence. Korea made national master plans to be “the most wired nation in the world.” One of the national plans, Comprehensive Plan for ICT in Education (CPIE), began in 1997 as the corner stone of E-learning. The initial stage of the CPIE (1997-2000), focused on ICT infrastructure and ICT literacy set-up, supplying every school classroom with access to Internet service. The second stage with CPIE(II) (2001-2005), has turned its emphasis to the integrated use of ICT in curriculum and information distribution and teachers’ training. CPIE(), now under design, aims at fundamental change in school education, ushering in an ‘E-learning era.’ The focus of ICT policies for infrastructure in school education has changed. At the beginning the one computer for one teacher or for one classroom was the goal of the policy. However, over time, integrated use of ICT in curriculum has been more focused. Digital contents development and distribution of the public sector from the late 1990s up until now entered into three critical phases: (1) content development- enriching ICT multimedia contents for education, (2) sharingcollecting and distributing contents based on (3) the quality control-reviewing and screening of collected data. In terms of the professional development of teachers, Korean government set up life cycle for professional development for teachers such as (1) standards and models set-up, (2) training programs delivery, and (3) best practices distribution, and followed the cycle. In addition this article described several examples of E-learning in Korea such as Eductional TV programs for the college scholastic ability test, Cyber home learning networks, and Cyber high school.
Effect of Heating on DPPH Radical Scavenging Activity of Meat Substitute
Song, Hyeun Sung,Bae, Jun Kyu,Park, Inshik The Korean Society of Food Science and Nutrition 2013 Preventive Nutrition and Food Science Vol.18 No.1
This study was conducted to evaluate the increase of DPPH radical scavenging activity of meat substitute by heating. The meat substitute showed higher DPPH radical scavenging activity than those of other foods rich in protein such as beef, pork, chicken, and soybean curd. The DPPH radical scavenging activity of meat substitute was dependent upon concentration, heating temperature and heating time of meat substitute. The DPPH radical scavenging activity of meat substitute was enhanced with increasing heating temperature and time. The increase of DPPH radical scavenging activity was only applied to meat substitute without showing any activation in other foods rich in protein such as beef, pork, chicken, and soybean curd.
Effect of Heating on DPPH Radical Scavenging Activity of Meat Substitute
Hyeun Sung Song,Jun Kyu Bae,Inshik Park 한국식품영양과학회 2013 Preventive Nutrition and Food Science Vol.18 No.1
This study was conducted to evaluate the increase of DPPH radical scavenging activity of meat substitute by heating. The meat substitute showed higher DPPH radical scavenging activity than those of other foods rich in protein such as beef, pork, chicken, and soybean curd. The DPPH radical scavenging activity of meat substitute was dependent upon concentration, heating temperature and heating time of meat substitute. The DPPH radical scavenging activity of meat substitute was enhanced with increasing heating temperature and time. The increase of DPPH radical scavenging activity was only applied to meat substitute without showing any activation in other foods rich in protein such as beef, pork, chicken, and soybean curd.
Seung-Young Hong,Inshik Park,Mira Jun 한국식품영양과학회 2011 Preventive Nutrition and Food Science Vol.16 No.1
Alzheimer’s disease (AD) is a neurodegenerative disorder characterized by neuronal loss and extracellular senile plaques containing β-amyloid peptide (Aβ). The deposition of the Aβ peptide following proteolytic processing of amyloid precursor protein (APP) by β-secretase (BACE1) and γ-secretase is a critical feature in the progression of AD. Among the plant extracts tested, the ethanol extract of Petasites japonicus leaves showed novel protective effect on B103 neuroblastoma cells against neurotoxicity induced by Aβ, as well as a strong suppressive effect on BACE1 activity. Ethanol extracts of P. japonicus leaves were sequentially extracted with methylene chloride, ethyl acetate and butanol and evaluated for potential to inhibit BACE1, as well as to suppress Aβ-induced neurotoxicity. Exposure to Aβ significantly reduced cell viability and increased apoptotic cell death. However, pretreatment with ethyl acetate fraction of P. japonicus leaves prior to Aβ (50 μM) significantly increased cell viability (p<0.01). In parallel, cell apoptosis triggered by Aβ was also dramatically inhibited by ethyl acetate fraction of P. japonicus leaves. Moreover, the ethyl acetate fraction suppressed caspase-3 activity to the basal level at 30 ppm. Taken together, these results demonstrated that P. japonicus leaves appear to be a useful source for the inhibition and/or prevention of AD by suppression of BACE1 activity and attenuation of Aβ induced neurocytotoxicity.