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( Go Ya Choi ),( Hong Kyu Lee ),( Chan Gi Nam ),( Shin Cho ) 정보통신정책학회 2013 정보통신정책연구 Vol.20 No.2
Most mangers face a decision as to whether to increase the number of alliances they form or not and which type of partners they should select. This paper investigates the impact of the number of alliance formations and the degree of familiarity in alliances on a firm`s economic performance in the Korean telecommunications industry. The empirical results show that growth in the overall number of alliance formations negatively influences the firm`s performance. This result is mainly due to the fact that the Korean telecommunications industry has become saturated, and therefore the potential benefit from the alliance is limited. However, greater familiarity in emergent alliances has positive effects on performance. This implies that an alliance related to the reduction of transaction costs through the company`s existing resources and governance capability tends to make a direct contribution to performance by generating effective synergies.
최고야 ( Go Ya Choi ),고병섭 ( Byoung Seob Ko ),이미영 ( Mi Young Lee ),채성욱 ( Sung Wook Chae ),김영화 ( Young Hwa Kim ),육진아 ( Jin Ah Ryuk ),백지성 ( Ji Seong Baek ),이혜원 ( Hye-won Lee ) 대한본초학회 2011 大韓本草學會誌 Vol.26 No.1
Objective: This study was to compare antioxidant activity and HPLC pattern analysis from 4 species of changpo(changpu). Methods: To compare the antioxidant activity and HPLC pattern analysis from the 4 species of changpo, we performed the in vitro anti-oxidative activity assays and HPLC analysis from 70% ethanol extracts of Acorus gramineus Sol. (=AG), A. tatarinowii Schott (=AT), A. calamus L. (=AC) and Anemone altaica Fisch. ex C.A.Mey (=AA) taken in the herbal medicine market of Korea. Results: AG has the most effective anti-oxidative activity among 4 species of changpo. As the HPLC pattern analysis, AT was detected the unknown peak at retention time 14.9 min whereas AG was not showed any peak at the same retention time. These results suggest that AG could be used rather than AT when it need to be prescribed as anti-oxidative medicine. Conclusions: This result can be used as the basic data contributing to the stability of AG according to an appropriate clinical application.
최고야 ( Go Ya Choi ),고병섭 ( Byoung Seob Ko ),장설 ( Seol Jang ),채성욱 ( Sung Uk Chae ),이혜원 ( Hye Won Lee ),이미영 ( Mi Young Lee ) 대한본초학회 2009 大韓本草學會誌 Vol.24 No.4
Objectives: Quality control for imported medicinal herbs is duty for regulation, however to the best of our knowledge there has been no report regarding quality control of imported ones. Therefore, this study investigated the data of imported ones for monitoring quality issue. Methods: These data are categorized according to item, the amount of import, country, inspection item, suitability, and incongruity reason based on the 248 results performed by KIOM. Results: China is the number one country for import with the value of 73%. Inspected medicinal herbs were 139 species, among them Poria is ranked as top for requested number and the amount of import. The amount of import is similar between high ranking 20 species and low ranking 119 ones, showing high ranking ones are major. The incongruity ratio was 7.7% from the total number of inspected items, the reason for incongruity was excess of tolerable amount of Cd residue. Conclusions: From the data, it is effective way to focus on high ranking herbs for evaluating imported herbs for quality control. The study of mechanism on Cd accumulation and its decrease is essential for environmental matter. And identification and storage for mixed used and easily decomposable herbs are remained for further study. Our study might be small step for showing guideline for proper quality control.
미각센서를 이용한 중국산 감초와 우즈베키스탄산 광과감초의 감별
최고야 ( Go Ya Choi ),김영화 ( Young Hwa Kim ),채성욱 ( Sung Wook Chae ),이혜원 ( Hye Won Lee ),고병섭 ( Byoung Seob Ko ),이미영 ( Mi Young Lee ) 대한본초학회 2011 大韓本草學會誌 Vol.26 No.1
Objectives: Genetic analysis and taste pattern were performed to identify species between Glycyrrhiza uralensis and G. glabra which are officially listed in Korean Pharmacopoeia Ⅸ as origin of Gamcho(gancao, licorice root, Glycyrrhizae Radix et Rhizoma). Methods: Genetic analysis showed that identification between two species was done by comparing base sequence of ITS(intergenic transcribed spacer) and trnH-psbA regions from eleven Gamchoes sold in market. There was different taste pattern using by taste sensor in Glycyrrhiza uralensis and G. glabra. Results: Genetic analysis showed that six Gamchoes from China were identified as Glycyrrhiza uralensis and five Gamchoes from Uzbekistan were G. glabra. From the results of taste pattern, sourness and astringency of Glycyrrhiza uralensis from China were significantly higher than G. glabra from Uzbekistan, and aftertaste of astringency, aftertaste of umami, and saltiness of Glycyrrhiza uralensis were signicantly low as compared to G. glabra. There is no significant difference between two species in terms of bitterness, aftertaste of bitterness, and umami. Conclusions: Taken together, Glycyrrhiza uralensis from China and G. glabra from Uzbekistan were identified by taste sensor, and this technic could be applied to establishment of taste pattern marker for identification of different species located in various regions.
동북아 5개국 공정서의 식물성 한약재 기원종 비교: 同名異屬種(동명이속종)을 중심으로
최고야 ( Go Ya Choi ),강영민 ( Young Min Kang ),문병철 ( Byeong Cheol Moon ),김호경 ( Ho Kyoung Kim ) 대한본초학회 2013 大韓本草學會誌 Vol.28 No.5
Objectives: Herbal medicines were used a lot in the Northeast Asia, traditionally. However, the pharmacopoeia standards in South Korea, China, Japan, Taiwan, and North Korea including many other Asia are different and cause confusion. If the origins are not belonging to same genus, it should be careful to distinguish. In this study, herbal medicines in the pharmacopoeia were analyzed for different genus of origins in order to identify the disruptive items for each country. Methods: The scientific names of herbal medicines (plant based) was analyzed origins from Pharmacopoeias of Republic of Korea, People`s Republic of China, Japan, Taiwan, and Democratic People`s Republic of Korea. The origins specified differently were examined. Especially, the items which have different genus were analyzed in detail and confirmed for correct scientific name. Results: The analyzed herbal medicines in Pharmacopoeia were all 753 items. 320 items were in only one country`s Pharmacopoeia. 237 items were in more than two countries` Pharmacopoeia, but their origins were same on each other. The items which have different genus were 35 items. Conclusions: In general, species belonging to the same genus have similar ecological, morphological, and pharmacological activity. However, species with different genus may have different medicinal ingredients and pharmacological activity. Thus, the items which have same name but different genus are required to analyze for comparison of pharmacological activity. Also, other species belonging to the different genus should be used for different items.
최고야 ( Go Ya Choi ),최은정 ( Eun Joung Choi ) 한국간호과학회 정신간호학회(구 대한간호학회정신간호학회) 2015 정신간호학회지 Vol.24 No.2
Purpose: This study is done to investigate the attitudes of teachers toward mental illness and to provide appropriate information about mental illness. Methods: The participants were 228 teachers recruited from 15 elementary schools in the National Capital region and B metropolitan city. Data were collected from October to December, 2013 and analyzed using t-test, ANOVA and Scheffe test with SPSS 18.0. Results: Neutral attitudes (77.4±7.79) toward mental illness were shown among the teachers. A negative attitude for stereotyping (23.2±6.08), a positive attitude for optimism (19.3±3.01) and neutral attitudes for coping (19.3±1.92) and understanding (15.6 ±3.05) were revealed. Conclusion: The results indicate that elementary school teachers have neutral attitudes towards mental illness which is closely related to the experience of learning about mental illness. Thus, when teachers learn about mental illness they can understand and guide children who have unusual behaviors.
오미자(五味子)가 함유된 고제(膏劑)의 제조방법에 따른 기호도와 기능성 비교
김홍준,김영식,최고야,이금산,박경범,이승호,최영규,정승일,주영승,Kim, Hong-Jun,Kim, Young-Sik,Choi, Go-Ya,Lee, Guem-San,Park, Kyoung-Bum,Lee, Seung-Ho,Choi, Young-Kyu,Jeong, Seung-Il,Ju, Young-Sung 대한한의학방제학회 2011 大韓韓醫學方劑學會誌 Vol.19 No.1
Objectives : To further enhance the business value of domestic Schisandrae Fructus, new products composed of modified Gyeongok-go were developed. Their preferences and antioxidant behaviors were compared under different manufacturing processes. Methods : Sensory evaluation was carried out on a 7-point scale by a taste panel. Additionally, the antioxidant activities were investigated in vitro against ABTS[2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid)] and DPPH(2,2-diphenyl-1-picrylhydrazyl). Results : The differences among each sample were not statistically significant in sensory evaluation. In contrast, the antioxidant properties of each sample can have up to twice effect distinction at a final concentration of 2.5 mg/ml. Conclusions : Manufacturing methods, while having smaller effect on sensory evaluation, greatly affected the antioxidant properties. As a consequence, the optimum manufacture conditions need to be established using different manufacture conditions and activity search methods.
한국어판 척도를 사용한 정신질환에 대한 간호대학생의 태도 조사
최은정(Choi Eun Joung),최고야(Choi Go Ya) 고신대학교 전인간호과학연구소 2015 전인간호과학학술지 Vol.8 No.-
Purpose: The aim of this study is to investigate the attitude of nursing students of University toward mental illness. Method: A total 340 nursing students were recruited from 2 Universities. Data were collected from May to June, 2014, and analyzed with SPSS 18.0. Result: ASMI were 91.19 (range: 30-120, SD=9.31). Subscales that stereotyping was 32.74 (range: 11-44, SD=4.72), optimism was 19.35 (range: 6-24, SD=2.67), coping was 24.44 (range: 7-28, SD=2.75), and understanding was 14.65 (range: 6-24, SD=3.00). Statistically significant main effects were found for age (F=3.933, p<.000), grade (F=6.649, p<.000), reason for applying to nursing science (F=2.292, p=.045), satisfaction with nursing science(F=4.786, p=.009) and satisfaction with clinical placement in the mental health ward (F-3.776, p=.027) on ASMI. Conclusion: The finding is that nursing students have a positive attitude towards people with mental illness. It needs appropriate programs for educations to improve a more positive nursing student attitude towards mental illness