The Purpose of this study is to find the effect factors of R&D investment in SMEs which plays an important role in the national economy, and the differences of the effect factors by the type of SMEs. The subject of this study is about 3,400 SMEs mentioned in "The survey of technical statistics on SMEs in 2007" by Korea Federation of Small and Medium Business. The effect factors are related with the size of business, the infrastructure of R&D and the activities of R&D which have been studied by many researchers. The methods of analysis are regression analysis, moderating effect analysis and the software package used is SPSS 12.0. The results of the study are as fallow. First, it was found that unlike in previous studies which show the effect of the elements of business's size, research infrastructure, research activities on R&D investment, one element alone can't be considered for meaningful result but the various elements have effect on R&D investment at the same time. In other words, the number of employees and the sales as the elements of business's size, the ratio of researchers, the technical ability, the ratio of equipment possession and the intellectual properties as the elements of R&D infrastructure, the activity of ideas and joint research as the elements of R&D activities have positive(+) effect, whereas the participation of CEO in the activity of R&D as the elements of R&D activities activity has negative(-) one. The number of employees, the ratio of researchers, and the sales had relatively high influence whereas equipment possession, technical ability, intellectual properties, the participation of CEO in the research, the activity of idea, joint research had relatively low influence. Next, it was also found that there are differences of the effect factors over the types of SMEs. SMEs were classified into 19 types by eight criteria such as start-ups and existing business by business age; small business and medium business by size; manufacturing business and service business by product type;independent business and subcontractor business by dealing type; businesses in the entering, growing, maturing and restructuring stage by growth stage; businesses with low, medium and high technology by technological level; pioneering business and non-pioneering business by industrial type; and businesses with state-of-the-art technology and non-advanced business by the level of business activities. The meaning of this study lies in the fact that it found the various effect factors should be considered at the same time when conducting study on SMEs' R&D investment, and the differences by the type should be acknowledged. This study surpassed the limitations of the previous studies which focused on a couple of factors and types. This study result can also be considered for other studies on achievement, organization, marketing and others. Moreover, it shows that a differential policy by business type is needed when formulating SME policy.
Lee, Jun Young;Kim, Mi Kyeong;Ha, Jun Young;Kim, Yong Gyun;Hong, Chang Oh;Kim, So Young;Kim, Chung-Hwan;Kim, Keun Ki
Journal of Life Science
/
v.24
no.3
/
pp.242-251
/
2014
The objective of this study was to isolate a photosensitizer from Pueraria thunbergiana leaves that induces apoptosis in SK-HEP-1 cells. Column chromatography and thin layer chromatography were used to isolate active compounds from extracts of P. thunbergiana leaves. The structures of the isolated compounds were determined by 1D-NMR, 2D-NMR, and FAB-mass spectroscopy. A substance, named M4-3, was purified from the leaves of P. thunbergiana using various chromatography methods, and the absorbance of the substance was measured. The absorbance was highest at 410 nm, suggesting that the M4-3 substance was a different compound from chlorophyll a and b, which absorb at 410, 502, 533, and 607 nm. Further analyses revealed that the M4-3 compound was a $13^2$-hydoxy pheophorbide, a methyl ester with a molecular weight of 662. M4-3 was identified as a derivative compound of pheophorbide, with a structure that magnesium comes away from the porphyrin ring. The results of the analysis of the cytotoxicity of the M4-3 substance against the SK-HEP-1 cells revealed that it inhibited rates of cell growth by 40% and 80% at a concentration of 0.04 ${\mu}M$ and 0.08 ${\mu}M$, respectively. The M4-3 compound was found to be a photosensitizer for cytotoxicity because it was appeared only in light condition as examining activity in different irradiation conditions (light condition and nonlight condition) under the same concentration. Analysis of morphological changes in the cells following cell death induced by exposure to the M4-3 substance reveled representative phenomena of apoptosis (nuclear condensation, vesicle formation, and fragmentation of DNA). The induction of apoptosis was attributed to the compound's photodynamic activity.
For the effective utilization of cuttle bone as a calcium powder, we examined calcination condition ($700^{\circ}C: 0\sim10\;hrs,\;800^{\circ}C:\;0\sim3\;hrs,\;900^{\circ}C:\;0\sim1\;hr\;and\;1,000^{\circ}C:\;0\sim30\;mins$) for recovery of calcium from raw cuttle bone powder (RCB) and characteristics of calcined cuttle bone powder (CCB) treated by optimal condition. During calcination of RCB, the yields was decreased, while total and soluble calcium contents and white index were increased up to constant calcination time ($8\;hrs\;at\;700^{\circ}C,\;2\;hrs\;at\;800^{\circ}C,\;45\;min\;at\;900^{\circ}C\;and\;20\;min\;at\;1,000^{\circ}C$). But, these after that almost unchanged. From these results, the optimal calcination conditions for recovery of calcium from RCB were revealed $8\;hrs\;at\;700^{\circ}C,\;2\;hrs\;at\;800^{\circ}C,\;45\;min\;at\;900^{\circ}C\;and\;20\;min\;at\;1,000^{\circ}C$. In the case of CCB treated for 2 hrs at $800^{\circ}C$, total calcium was about $70\%$, the major component was calcium oxide, and the structure consisted of porosity. The calcium solubility of CCB increased by 22 times compared to RCB. But, the pH of RCB was about 12.9. Therefore, for the effective utilization of RCB as a calcium powder, it requires a suitable modification operation for adjustment of pH ($pH\;2.0\~9.0$).
Kim, Byung-Hee;Kweon, Mee-Hyang;Lim, Wang-Jin;Sung, Ha-Chin;Yang, Han-Chul
Korean Journal of Food Science and Technology
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v.30
no.3
/
pp.709-716
/
1998
Three kinds of anti-complementary system and macrophage activating polysaccharides, AB-20-Ia, AB-20-IIa-2a and AB-20-IVa-2 were isolated from the fruit body of Agaricus bisporus and their structures were characterized. The proteoglycan, AB-20-IVa-2 showing the most potent anti-complementary and macrophage activity was composed of glucose, galactose, mannose, xylose, fucose and arabinose in a molar ratio of 3.48:1.83:1.00:0.79:0.74:0.11 and its main component amino acids were phenylalanine (34.72%) and valine (27.84%). The neutral polysaccharides, AB-20-Ia and AB-20-IIa-2a showing lower activity than AB-20-IVa-2, consisted of xylose, glucose, mannose, fucose and arabinose in molar ratios of <0.05:<0.05:2.07:1.00:2.72 and 2.16:1.58:1.00:0.20:0.14, respectively. The molecular weights of AB-20-Ia, AB-20-IIa-2a and AB-20-IVa-2 were 840,000, 750,000 and 650,000 respectively. In the $^1H-\;and\;^{13}C-NMR$ spectra of AB-20-Ia and AB-20-IIa-2a, AB-20-Ia showed only ${\beta}-configuration\;(^1H:\;4.8\;ppm,\;^{13}C:\;107.0\;ppm)$ in the anomerization of the glycosidic linkages, while AB-20-IIa-2a had both ${\alpha}-anomer\;(^1H:\;5.4\;ppm,\;^{13}C:\;102.0\;ppm)\;and\;{\beta}-anomer$. Especially, AB-20-Ia and AB-20-IIa-2a showed acetyl signals $(^1H:\;2.5\;ppm,\;^{13}C:\;21.0\;ppm)$. In the methylation analysis of the three polysaccharides, high proportion of 1,6-linked glucofuranosyl residues were detected in AB-20-Ia, whereas 1,6-linked glucopyranosyl residues and branches linked at position 4 of those mainly contained in AB-20-IIa-2a. AB-20-IVa-2 consisted mainly of 1,2-linked xylofuranosyl residues and 1,6-linked glucopyranosyl residues and branches linked at position 3 of those.
This study is focusted to the national park of Korean typical mountain Chi-ri, its visual resources of forests, and practiced inspectind course by way of hypothesis and tests, to show visual resource management objectively, and that of quantitative basic data. spatial image structure measured by Semantic Differential(S.D.) Scale was shown through factor analysis algorithm for the analyzing psychological amount and examined the flowing out of decisive factor and the objective importance related mutual factors by appling the measurement of visual quality. Also, it has been investigated the differences between the degrees of expectation which is used before and of satisfaction which is used, by appling instrumental expectation theory. And showed patterns of investigation area through factor analyzing algorithm. As a national Park, visual factors that have natural landscape harmonized forest, sky, surface of the water, curious stones and rocks, temples should be escalate their values affirmatively so as to be the scenery of pointed direction and enjoyable, and it is needs the techniques visual resource management and its controlling technique to make artificial structures more intentional planning and systemical setting. Manmade distinctive quality in the spatials that affect complementally or harmonizingly, should be received considering relations between the distifution and joining which in line with various visual presenting massive factors. More than that, it is needed united basic standard to the beauty of arrangements which contain visual continuity considered balance between nature and human work, simplicity of structural types, assimilation, emphasis, unification of different factors and pro rata.
Journal of the Korean Society of Food Science and Nutrition
/
v.40
no.5
/
pp.696-703
/
2011
We performed a randomized placebo-controlled trial to determine whether or not fermented red ginseng supplementation modulates blood glucose and insulin resistance in type 2 diabetic patients. A total of 38 patients were randomized to either a fermented red ginseng group or placebo group. The patients in the experimental or placebo group consumed 780 mg of fermented red ginseng or cellulose supplement per day for 12 weeks, respectively. Lifestyle factors and dietary intakes of the patients were not altered during the 12-weeks period. In the fermented red ginseng group after 12 weeks, the fasting blood glucose levels were significantly decreased ($136.29{\pm}16.45$ mg/dL to $127.71{\pm}17.74$ mg/dL) and $HbA_1c$ was also decreased. Especially, high HbA1c (HbA1c $\geq$8%, $8.45{\pm}0.56%$ to $7.82{\pm}0.53%$) was significantly decreased compared to low HbA1c (HbA1c <8%, $6.71{\pm}0.85%$ to $6.44{\pm}0.49%$) in the fermented red ginseng group. Serum low-density lipoprotein was slightly decreased in the fermented red ginseng group compared to the placebo group. Homeostasis model assessment-insulin resistance was significantly reduced in the fermented red ginseng group compared to the placebo group. These results suggest that fermented red ginseng supplementation could be helpful to reduce blood glucose by improving insulin resistance in type 2 diabetic patients.
Kim, Yong-Suk;Lee, Sun-Kyu;Jeong, Do-Yeong;Yang, Eun-Jin;Shin, Dong-Hwa
Food Science and Preservation
/
v.14
no.5
/
pp.497-503
/
2007
In order to develop a new rice bran danmooji, changes in physicochemical characteristics and texture of danmooji treated with rice bran, Stevia rebaudiana Bertoni leaf powder, succinic acid, or yeast extract were investigated during salting for 90 days. The PH of rice bran danmooji decreased from PH6.41 initially to pH 4.09 (control group), pH 4.10 (S. rebaudiana treatment S1), pH 3.84 (S. rebaudiana + succinic acid treatment S2), and pH 3.90 (S. rebaudiana+succinic acid+yeast extract treatment S3) after 90 days of salting. At this time, the salinities of rice bran danmooji of the S1, S52, and S3 groups were 2.32%, 1.94% and 2.15% respectively. The hardness of all groups decreased rapidly in the first 30 days of salting, and thereafter showed no changes. After 90 days of salting, the hardness of all groups was $1,186-1,368\;g/cm^2$ with no significant differences between groups. Redness, the a value, of the S2 and S3 groups treated with succinic acid, was lower than that of S3, whereas yellowness, the b value, of S3 treated with succinic acid and yeast extract was the highest of the three groups. Sensory evaluation of rice bran danmooji after 90 days of salting resulted in S3 attaining the highest scores for flavor, taste, texture, and overall acceptability. These results indicate nut high-quality rice bran danmooji may be prepared by addition of S. rebaudiana leaf powder, succinic acid and yeast extract to rice bran.
Journal of the Korean Society of Food Science and Nutrition
/
v.13
no.3
/
pp.307-312
/
1984
The dried pure shells deprived of soft tissues were subjected to analysis of chitin-protein complexes from 5 species of marine crustaceans, including 2 species of crabs and 3 species of shrimps. The protein fractions were obtained from chitin-protein complexes under the varying conditions of extractions and the crude chitin was prepared from the shells by the sulfurous acid process. The crude chitin was purified through the extraction with several organic solvents such as dimethyl-acetamide, N-methylpyrrolidone. The purified chitin was also examined using the phase contrast microscope. Total protein contents of the shells were diverse, showing 9.6% for Portunus trituberculatus, 3.1%, Charybdis bimaculata, 9.4%, Penaeus japonicus, 10.9%, Metapenaeus intermedius and 5.8%, Squilla oratoria. Covalently bound protein varied with species from 2.1% for Charybdis bimaculata to 9.9% for Metapenaeus intermedius. The puified chitin contents of the shells were shown to 21.1% for Portunus tritube rculatus, 6.2%, Charybdis bimaculata, 20.2%, Penaeus japonicus, 27.1%, Metapenaeus intermedius and 25.5%, Squilla oratoria. Exceptionally low analytical value obtained with Charybdis bimaculata are supposed to be due to the very young subjects. The ratios of chitin to covalently bound protein in the shells were various such as 2.7 to 1 for Portunus trituberculatus, Penaeus japonicus and Metapenaeus intermedius, 3.1 to 1, Charybdis bimaculata and 6.1 to 1, Squilla oratoria. The microscope finding of the purified chitin showed the filamentous form in all the specimen.
Kim, Young-Jung;Kim, Kee-Chul;Lee, Byung Sil;Lee, Gab-Yeoun;Cho, Kyoung-Jin;Kang, Jin Taek;Kim, Tae-Dong
Journal of Korean Society of Forest Science
/
v.94
no.6
/
pp.446-452
/
2005
In order to examine the natural distribution variations between groups of the Stewartia koreana, the leaf form characteristics of the investigation sites were analyzed by each group. As a result, the Mt. Kumsan group showed a smaller value in leaf length, width, area, and the number of veins, but not in the petiole length and serration number. Among each character, the coefficient of variation(CV) of the characters excluding petiole length and leaf area was in a comparatively narrow range, from 11.6~17.4%. On the other hand, the CV of petiole length and leaf area between the groups was 34.9% and 28.4% respectively. The CV of these characters within the group was also extraordinary- petiole length showed 29.5~42% and leaf area showed 27.7~40.7%. Also, the simple correlation analysis between 12 leaf characteristics showed that the correlation between leaf width and leaf area was high (r=0.975). The correlations between leaf length and leaf area, between leaf length and leaf width were 0.971 and 0.969, respectively. A negative correlation between angle of leaf base and ratio of leaf length to leaf width was discovered (r= -0.843), meaning that the ratio of leaf length to leaf width decreases as angle of leaf base increases. A cluster analysis was enforced among leaf characteristics of the selected group as a standard on the similarity of quantitative, qualitative measurements. The results showed that at a 0.4 distance level, the subjects could be classified into 4 groups. Group 1 was the Mt. Jogyesan and Mt. Kayasan group, group 2 was Mt. Paegunsan, group 3 was Mt. Unmunsan and Mt. Mudungsan, and group 4 was Mt. Kumsan. At a distance level of 0.6, the subjects were classified into two groups. Group 1 was the Mt. Ktimsan group and group 2 was Mt. Mudungsan, Unmunsan, Paegunsan, Kayasan, and Cogyesan. Especially the Mt. Kumsan group had the smallest value in the leaf characteristics of leaf length, width, area, and the number of veins, showing an obvious difference from the other five groups. There were five principal components that had a meaningful eigenvalue over 1.0 among the 12 extracted components. The explanatory power of the top two main components (leaf length and width) on the total variation was 52.7%. The explanatory power was 91.3% when all 5 main components were included.
Choi, Seong Hyun;Jeong, Jae-Hong;Lee, Sang Duck;Son, Hwa Young;Sung, Chang;Oh, Man Jin;Kim, Seung Yeol
Korean Journal of Agricultural Science
/
v.24
no.2
/
pp.283-289
/
1997
CNU O4-5 isolated from conventional Meju, which is used as raw material for making a soybean fermentation food, identified as an Aspergillus oryzae. To make koji, Aspergillus oryzae CNU O4-5 was cultured for 3-4 days at $30^{\circ}C$ with various grain materials such as flour, soybean powder, flour+soybean powder(1:1), soaked soybean and rice. The koji was evaluated for analyze the angiotesin converting enzyne(ACE) inhibition, antioxidative activity, superoxide dismutase(SOD) activity, amylase and protease activity. $\alpha$-amylase and glucoamylase activities of flour koji were higher than those of the koji soybean powder. However neutral and alkaline protease activities of flour koji were lower than those of flour+soybean powder and soybean koji. Amylase and protease activities of kojies of soaked soybean and rice showed very low level. The range of the ACE inhibition rate by hot water fraction of the kojies, which are cultured with various gain materials, were from 45% to 54%. The anti oxidative activity of ethanol-fraction of koji, which is made by using the soybean powder or soaked soybean, prolonged for 6 days in lard at $60^{\circ}C$. The SOD activity of grinded fraction of koji, which is made by using the flour or soybean powder, was same as 2,000 units per g of each koji.
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