교사-학생 상호적 쓰기를 활용한 문단 구성 방안

전인숙(Jeon, In-Sook) 성신여자대학교 교육문제연구소 2010 교육연구 Vol.49 No.-

이 연구는 상호적 쓰기(interactive writing) 전략을 활용하여 초등학생들의 문단 구성을 돕는 데 목적이 있다. 문단 구성은 글의 조직에 해당하는 것으로 초등학생부터 대학생에 이르기까지 문단을 구성하는 과정에서 나타나는 문제점이 지적되어 왔다. 그러나 쓰기 교과서를 보면 문단 구성 지도 전략으로 교사의 설명이나 시범이 주를 이루고 있다. 초등학생 필자의 경우 능숙한 교사가 보이는 시범과 설명 후에 독립적으로 글을 쓰려면 인지적 부담이 따른다. 학생 필자는 쓰기 발달에 있어서 미숙한 필자의 특징을 보이므로 교사의 도움 없이 학생 필자 스스로 통일성 있는 문단을 구성하기가 어렵다. 따라서 이 연구에서는 이런 문제점을 해결하기 위해 교사-학생 상호적 쓰기 전략을 활용한 문단 구성의 효용성과 그에 따른 수업 사례를 제시해 보고자 한다. This study focused on paragraph construction of elementary student by teacher-student interactive writing. The paragraph construction is related to organizing a text;below is a block from elementary student to undergraduate student. According to writing material, the explanation and modeling of teacher are a main strategy of paragraph construction. for elementary students, independent writing after explanation and modeling of teacher has a cognitive load. Especially, the elementary students have difficulty to develop the paragraph without support. To solve this problem, this study proposes the example of instruction and strength of paragraph construction strategy by teacher-student interactive writing.

마카 추출액을 첨가한 음료의 품질특성 및 저장 중 항산화성 평가

전인숙 ( In Sook Jeon ),강용수 ( Yong Soo Kang ),정해정 ( Hai Jung Chung ) 한국식품저장유통학회(구 한국농산물저장유통학회) 2011 한국식품저장유통학회지 Vol.18 No.5

The objective of this study was to develop a functional drink using maca extract, and to evaluate the latter`s antioxidative activity during storage. Maca extract was added in five different content percentages (0, 8, 16, 24, and 32%), and the physicochemical properties were investigated. The pH of the control drink was lower than that of the drink to which maca extract was added. The ˚Brix increased with the increasing amount of maca extract. The Hunter L value decreased while the yellowness (b) value increased as the maca extract level increased. The results of the consumer acceptance test showed that no significant differences in overall acceptability were observed between the control and the 8%, 16%-, and 24% maca-added drinks. Therefore, it is suggested that up to 24% maca extract can be added to drinks without depressing the quality. The changes in the total polyphenol content, DPPH radical, superoxide anion radical activity, and tyrosinase inhibitory effect were monitored during storage at 4 and 37˚C for four weeks. The results showed that there was a gradual decrease in the total polyphenol content and antioxidant activities after four-week storage, and the drinks containing maca extract exhibited a smaller decrease in antioxidant activity than did the control drink. Moreover, microbial growth was not shown during the same periods.

Capsaicin 약침(藥鍼)이 흰쥐의 급성(急性) 염좌(捻挫)에 마치는 효과

박상연,최윤영,전인숙,구성태,김경식,손인철,김재효,Park, Sang-Yeon,Choi, Yoon-Young,Jeon, In-Sook,Koo, Sung-Tae,Kim, Kyoung-Sik,Sohn, In-Chul,Kim, Jae-Hyo 경락경혈학회 2006 Korean Journal of Acupuncture Vol.24 No.2

Objectives: Pharmacopuncture which is a combination of acupuncture and herbal medicine helps to prevent and treat the diseases and symptoms including various pains. However, little was known about the therapeutic effects and its mechanisms on acute pain, although pharmacopuncture has been used frequently in acupuncture clinics. Acupuncture is known for producing analgesia for persistent ankle sprain pain in human. Furthermore, it also produces analgesia in a rat model of ankle sprain pain. Methods: To illuminate the underlying mechanisms of capsaicin pharmacopuncture-induced analgesia, weight bearing force (WBF) was observed on the acute ankle sprained rat model. Ankle sprain was induced in the rat by manually hyper-extending ligaments of the right ankle. Capsaicin pharmacopuncture was applied to SI6 (Yanglo) on the left forelimb (contralateral to the sprained ankle). Results: In behavioral test, capsaicin pharmacopuncture produced marked analgesic effects on acute ankle sprained animals as measured by WBF of the affected limb similar to manual acupuncture. Capsaicin pharmacopuncture was also suppressed by serotonin (5-HT) receptor antagonist methysergide (2 mg/kg, Lp.), but not by opioids receptor antagonist naltrexone (10 mg/kg, Lp.) and alpha adrenoceptor antagonist phentolamine (5 mg/kg, Lp.). Conclusion: The data suggest that capsaicin pharmacopuncture-induced analgesia is accomplished by activating the descending serotonergic inhibitory systems.

마카 추출액의 생리활성 효과

권윤숙(Yun-Suk Kwon),전인숙(In-Sook Jeon),황진현(Jin-Hyeon Hwang),임동민(Dong-Min Lim),강용수(Yong Soo Kang),정해정(Hai-Jung Chung) 한국식품영양과학회 2009 한국식품영양과학회지 Vol.38 No.7

본 실험에서는 마카를 기능성식품 소재로 사용하기 위한 가능성을 알아보기 위하여 마카분말을 다양한 용매로 추출하고 추출수율, 총 폴리페놀 함량, 전자공여능, SOD 유사활성 및 아질산염 소거능 등을 측정하여 최적의 추출조건을 확립하고자 하였다. 일반성분 분석 결과 수분, 조단백질, 조지방, 회분 및 탄수화물 함량은 각각 6.57%, 12.83%, 1.05%, 4.80 및 74.75%로 나타났다. 추출수율은 물을 사용할 경우 46.2%로 메탄올, 에탄올, 아세톤 등으로 추출하는 것보다 약 2∼200배 높게 나타났다. 추출용매에 따른 총 폴리페놀 함량은 물 추출액에서 328.68 ㎎/100 mL로 가장 높게 나타났다. 전자공여능은 메탄올 추출액이 52.36%로 가장 높았고 아질산염 소거능은 pH 1.2의 조건에서 물 추출액이 77.51%로 가장 높게 나타났다. 이상의 결과를 종합하여 최적의 추출용매로 물을 선정하였고 물 추출 온도(30, 70, 100℃)와 시간(1, 3, 5시간)을 달리하여 생리활성 물질의 함량변화를 측정한 결과 100℃에서 3시간 또는 5시간 추출할 때 총 폴리페놀 함량, 전자공여능 및 SOD 유사활성이 다른 조건에서보다 우수한 것으로 나타났다. 따라서 시간과 에너지의 효율적 측면을 고려하여 마카분말을 100℃에서 3시간 물로 추출하는 것이 가장 적합할 것으로 판단된다. This study was conducted to determine the optimal extraction conditions for maca by comparing the yields, total polyphenol contents, superoxide dismutase (SOD)-like activity and the nitrite scavenging ability. The proximate composition analysis showed 6.57% moisture, 12.83% crude protein, 1.05% crude fat, 4.80% ash and 74.75% carbohydrate. Maca was extracted with 7 different solvents (water, methanol, ethanol, acetone, ethyl acetate, chloroform and hexane) and the extracts were tested for biological activities. The extraction yields of water, methanol and ethanol extracts were 46.2%, 21.4% and 16.8%, respectively. Acetone, ethyl acetate, chloroform and hexane exhibited very low extraction yield, ranging from 0.2 to 1.0%. Total polyphenol contents and the nitrite scavenging ability were the highest in water extract. Electron donating ability and the SOD-like activity were the highest in methanol extract. When water extract was drawn out at different extraction temperatures (30, 70, 100℃) and time (1, 3, 5 hr), the improved biological activities (total polyphenol contents, electron donating ability, SOD-like activity and nitrite scavenging ability) were found in extracts treated at 100℃ for 3 or 5 hrs.

구절초의 부위별 메탄올 추출물의 항산화활성

정해정 ( Hai Jung Chung ),전인숙 ( In Sook Jeon ) 한국식품저장유통학회(구 한국농산물저장유통학회) 2011 한국식품저장유통학회지 Vol.18 No.5

The major objective of this study was to investigate the antioxidant activities of methanolic extracts from different parts (flower, leaf·stem, and root) of Chrysanthemum zawadskii by employing various in-vitro assay systems. The extraction yields from the flower, leaf·stem, and root were 18.347, 12.93, and 11.33%, respectively. The total polyphenol content was highest in the flower (17.16 mg/100 g) and lowest in the root (11.33 mg/100 g). The antioxidant activities were raised within creasing amounts of extracts, and the extracts from the flower showed the highest effect on the superoxide anion radical scavenging, metal chelating on ferrous ions and reducing power. In addition, the leaf·stem also showed good antioxidant activity in various systems. These results suggest that the methanolic extracts from the flower and leaf·stem possess excellent antioxidant activities and may thus serve as potential sources of natural antioxidants.

마카 추출액 첨가에 따른 시럽의 품질특성과 항산화성

정해정 ( Hai Jung Chung ),박한나 ( Han Na Park ),추영란 ( Young Ran Chu ),전인숙 ( In Sook Jeon ),강용수 ( Yong Soo Kang ) 한국식품저장유통학회 ( 구 한국농산물저장유통학회 ) 2010 한국식품저장유통학회지 Vol.17 No.2

클라우드 스토리지 서비스의 지속적 사용의도에 영향을 미치는 요인 연구

전창중(Chang-Joong Jun),이정훈(Jung-Hoon Lee),전인숙(In-Sook Jeon) 한국전자거래학회 2014 한국전자거래학회지 Vol.19 No.1

클라우드 스토리지 서비스는 미래 모바일 및 인터넷 서비스의 핵심적인 인프라 서비스가 될 가능성이 높다. 클라우드 스토리지 서비스와 관련된 많은 기업들은 지속적인 투자를 하고 있으며, 가입자 확보를 위해 노력하고 있다. 이러한 서비스를 제공하는 기업들이 신규 가입자를 확보하고 기존 가입자를 유지하기 위해 사용자들의 서비스 사용의도가 무엇인지 확인할 필요가 있다. 따라서 본 연구에서는 클라우드 스토리지 서비스의 지속적 사용의도에 대한 실증적 연구 수행을 위해 외생 변수를 추가한 확장된 TAM 모형을 기반으로 사용자 수용 의도와의 관계를 규명하고자 한다. 연구 결과, 개인의 혁신성, 자기효능감, 기능적 속성, 심리적 전환 비용과 같은 요인이 클라우드 스토리지 서비스의 지속적 사용의도에 영향을 주는 것으로 검증되었으며, 향후 클라우드 스토리지 서비스를 제공하는 기업들의 전략 수립을 위한 방향성을 제공해 줄 수 있을 것으로 기대한다. Cloud storage service has the potential to be a core infrastructure for the future mobile and Internet service; thus related service providers have been investing in it and trying to attract as many users as possible. In addition, those need to find out what motivates the users to keep using their service not only to attract new customers but also to secure their subscribers. Therefore, this study will examine its relationship with user?s motivation based on the extended TAM model with external variables for objective research about continuous use of cloud storage service. As a result, it was found that personal innovativeness, self efficacy, functional attributes, and psychological switching cost influence the continuous use of cloud storage service. Also, it is expected they can guide service providers to the right track when setting up their business strategy in the future.

마카(Lepidium meyenii)보충이 생쥐에서 Scopolamine으로 손상된 기억력 회복에 미치는 효과

이홍미 ( Hong Mie Lee ),박은진 ( Eun Jin Park ),전인숙 ( In Sook Jeon ),강용수 ( Yong Soo Kang ),진동일 ( Dong Il Jin ),정해정 ( Hai Jung Chung ) 한국식품영양학회 2010 韓國食品營養學會誌 Vol.23 No.4

With an increase in the number of people suffering from ageing-related diseases in our rapidly aging society, interests in natural products such as maca(Lepidium meyenii), which has properties of enhancing cognition and sexual performance, have increased. This study was conducted to assess the effects of 7 weeks of maca extract supplementation(0.5~2.0g/㎏ BW) on scopolamine-induced amnesia in mice and on sperm count in male mice. All doses of maca supplementation significantly protected against scopolamine-induced amnesia as determined by a Morris water maze, but not according to passive avoidance tests. Maca supplementation did not affect acetylcholinesterase activity in the whole brain, nor the testicular sperm count of male mice. This study suggests that maca may have some neuroprotective properties in mice, which will be further examined by future studies.

연구논문 : 마카 열수추출물 첨가가 요구르트의 품질 및 항산화능에 미치는 영향

정해정 ( Hai Jung Chung ),추영란 ( Young Ran Chu ),박한나 ( Han Na Park ),전인숙 ( In Sook Jeon ),강용수 ( Yong Soo Kang ) 한국식생활문화학회 2010 韓國食生活文化學會誌 Vol.25 No.3

The objective of this study was to examine the quality characteristics and antioxidant activity of yogurt containing hot water extract from maca. Four different levels (0, 4, 8, 12%) of maca extract were added to milk followed by fermentation with lactic acid bacteria at 37℃ for 12 hrs, and then the physicochemical properties of the samples were investigated. During 7 days of storage at 4±1℃, the acid production (pH and titratable acidity) of the yogurt increased with the addition of maca extract. The Hunter L value (lightness) decreased, while the b value (yellowness) increased as the maca extract level in the yogurt increased. Viable cell counts were not significantly different among the samples. The results of consumer acceptance tests showed that no significant differences in overall acceptability were observed between the yogurts containing 4% and 8% of maca extract and a control yogurt. The yogurt containing maca extract exhibited higher DPPH radical and superoxide anion radical scavenging activities than the control yogurt over the storage period.

Capsaicin 약침(藥鍼)이 흰쥐의 급성념좌(急性捻挫)에 미치는 효과

박상연 ( Sang Yeon Park ),최윤영 ( Yoon Young Choi ),전인숙 ( In Sook Jeon ),구성태 ( Sung Tae Koo ),김경식 ( Kyoung Sik Kim ),손인철 ( In Chul Sohn ),김재효 ( Jae Hyo Kim ) 대한경락경혈학회 2006 Korean Journal of Acupuncture Vol.23 No.2

Objectives: Pharmacopuncture which is a combination of acupuncture and herbal medicine helps to prevent and treat the diseases and symptoms including various pains. However, Little was known about the therapeutic effects and its mechanisms on acute pain, although pharmacopuncture has been used frequently in acupuncture clinics. Acupuncture is known for producing analgesia for persistent ankle sprain pain in human. Furthermore, it also produces analgesia in a rat model of ankle sprain pain. Methods: To illuminate the underlying mechanisms of capsaicin pharmacopuncture-induced analgesia, weight bearing force (WBF) was observed on the acute ankle sprained rat model. Ankle sprain was induced in the rat by manually hyper-extending Ligaments of the right ankle. Capsaicin pharmacopuncture was applied to SI6 (Yanglo) on the Left forelimb (contralateral to the sprained ankle). Results: In behavioral test, capsaicin pharmacopuncture produced marked analgesic effects on acute ankle sprained animals as measured by WBF of the affected Limb similar to manual acupuncture. Capsaicin pharmacopuncture was also suppressed by serotonin (5-HT) receptor antagonist methysergide (2 mg/kg, i.p.), but not by opioids receptor antagonist naltrexone (10 mg/kg, i.p.) and alpha adrenoceptor antagonist phentolamine (5 mg/kg, i.p.). Conclusion: The data suggest that capsaicin pharmacopuncture-induced analgesia is accomplished by activating the descending serotonergic inhibitory systems.