• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.23 no.3
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• pp.48-66
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• 2024

According to the three amended Laws of the Data Economy and the Data Industry Act of Korea, systems for pseudonymous data integration and Data Safe Zones have been operated separately by selected agencies, eventually causing a burden of use in SMEs, startups, and general users because of complicated and ineffective procedures. An over-stringent pseudonymization policy to prevent data breaches has also compromised data quality. Such trials should be improved to ensure the convenience of use and data quality. This paper proposes a prototype system of the Integrated Data Safe Zone based on redesigned and optimized pseudonymization workflows. Conventional workflows of pseudonymization were redesigned by applying the amended guidelines and selectively revising existing guidelines for business process redesign. The proposed prototype has been shown quantitatively to outperform the conventional one: 6-fold increase in time efficiency, 1.28-fold in cost reduction, and 1.3-fold improvement in data quality.

• Journal of Korean Medicine for Obesity Research
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• v.24 no.1
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• pp.25-40
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• 2024

Objectives: In the present study, we investigated the effects of clean-diabetes mellitus 3 (C-DM3), a herbal formula with Trichosanthis Radix, Coptidis Rhizoma, Crataegi Fructus, and Cinnamomi Cortex, on the pathological and serological symptoms of diabetes and its related molecular mechanisms in diet-induced obese mice. Methods: We prepared an obese mouse model using a high-fat diet for 8 weeks and then administered the C-DM3 extract for 4 weeks. The changes of pathological and serological biomarkers for diabetes assessment were measured in the mice and histological changes were observed in the liver and pancreas tissues. We also identified the main compounds in the C-DM3 extract using high pressure liquid chromatography (HPLC) and analyzed the molecular mechanism of the disease condition by network pharmacological analysis. Results: In the in vivo, the administration of C-DM extract to obese mice significantly reduced body weight gain, fatty liver symptoms, and muscle loss, and decreased the levels of fasting blood glucose, insulin, aspertate aminotransferase, triglycerides, and low-density lipoprotein-cholesterol. In addition, C-DM extract significantly increased the phosphorylation of insulin receptor substrate 1, protein kinase b (AKT), phosphoinositide 3-kinase (PI3K), adenosine monophosphate-activated protein kinase, and glucose transporter 4 in all pancreatic and liver tissues, with inhibition of histopathological changes in obese mice. HPLC analysis identified hyperoside, berberine, epiberberine, columbamin, coptisine, coumarin, jatrorrhizine, and citric acid as the main compounds. In the network pharmacological analysis, the molecular targets of C-DM3 extract on obesity and diabetes were shown as the insulin, AKT, PI3K, and mitogen-activated protein kinase pathways with the regulation of inflammatory molecules interleukin 6 (IL-6), jun proto-oncogene, and IL-1β, which matched our in vivo targets. Conclusions: Based on these results, C-DM3 extract is expected to be effective in improving obesity and preventing diabetic progression.

• Journal of the Korean Society of Marine Environment & Safety
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• v.30 no.2
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• pp.147-156
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• 2024

The sustainable management and enhancement of marine resources are becoming increasingly important issues worldwide. This study was conducted in response to these challenges, focusing on the development and performance comparison of fish detection and classification models as part of a deep learning-based technique for assessing the effectiveness of marine resource enhancement projects initiated by the Korea Fisheries Resources Agency. The aim was to select the optimal model by training various sizes of YOLOv8-Seg models on a fish image dataset and comparing each performance metric. The dataset used for model construction consisted of 36,749 images and label files of 12 different species of fish, with data diversity enhanced through the application of augmentation techniques during training. When training and validating five different YOLOv8-Seg models under identical conditions, the medium-sized YOLOv8m-Seg model showed high learning efficiency and excellent detection and classification performance, with the shortest training time of 13 h and 12 min, an of 0.933, and an inference speed of 9.6 ms. Considering the balance between each performance metric, this was deemed the most efficient model for meeting real-time processing requirements. The use of such real-time fish detection and classification models could enable effective surveys of marine resource enhancement projects, suggesting the need for ongoing performance improvements and further research.

• Journal of the Korean Society of Food Science and Nutrition
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• v.44 no.4
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• pp.579-585
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• 2015

The objective of this study was to investigate the quality characteristics of coffee soaked in Morus bombycis extract. Green coffee beans were soaked in M. bombycis extract for 2, 4, and 6 hours (sample codes: 2H, 4H, and 6H) at $4^{\circ}C$. Soaked green beans were dried and roasted for coffee extraction. Two controls, roasted with the same amount of heat (C1) and showed the same weight after roasting (C2), were used. Physicochemical characteristics (pH, total acidity, color, browning index, and total soluble solids), DPPH free radical scavenging activity (DPPH), ferric-reducing antioxidant power (FRAP), oxygen radical absorbance capacity (ORAC), total polyphenol content (TPC), and total flavonoid content (TFC) were investigated. Lower pH and higher total acidity were observed in 2H, 4H, and 6H (P<0.05), supporting evidence of sour taste. There were significant differences in DPPH between the controls (45.51~47.02%) and samples (50.67~55.25%, P<0.05), although 2H and 6H did not show significantly higher DPPH than the controls. 2H, 4H, and 6H showed significantly higher FRAP values ($0.320{\sim}0.331\;FeSO_4{\cdot}7H_2O\;mM\;FeSO_4/g$) than controls ($0.265{\sim}0.271\;mM\;FeSO_4/g$). ORAC values of samples [1,062.86~1,153.68 mM trolox equivalent (TE)/g] were significantly higher than those of controls (689.40~942.12 mM TE/g). 2H, 4H, and 6H showed significantly higher TPC [24.27~26.07 mg gallic acid equivalent (GAE)/g] and TFC [3.75~4.28 mg quercetin equivalent (QE)/g] than controls (19.79~22.77 mg GAE/g and 1.07~1.95 mg QE/g, respectively) (P<0.05). M. bombycis extracts soaked into green coffee beans showed polyphenol compounds from green coffee beans. Consumer acceptance of 4H (5.12) was the highest, followed by C2 (4.92). C1 (4.14) showed the lowest consumer acceptance. Consumers were segmented into two groups, those who preferred M. bombycis extract-soaked coffee (approximately 61%) and controls (approximately 39%).

• Journal of Korean Society of Forest Science
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• v.98 no.4
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• pp.399-408
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• 2009

We investigated the improvement of immuno-modulatory activities of sap of Acer mono and A. okamotoanum encapsulated with edible polymers. Anticancer activities and immune activities such as human B and T cell growth, secretion of cytokines and natural killer cell growth were observed. Both human immune B and T cells were increased up to 30~50% by the addition of nano particle sap of Acer mono and A. okamotoanum. The secretion of Interleukin-6 (IL-6) and Tumor necrosis factor-a (TNF-a) from human immune B and T cells were also significantly increased compare to the control. Natural Killer (NK) cell growth was enhanced to $19.4{\times}10^5$ cells/mL in adding nano encapsulated sap of A.okamotoanum. The cytotoxicity of the sample on normal human lung cell (HEL299) was below 19.8% in adding 1.0 mg/mL of the nano particle sap of A. okamotoanum. Generally, the growth of all three human lung adenocarcinoma, human stomach adenocarcinoma and human liver adenocarcinama was inhibited up to 85% in adding 1.0 mg/mL of the encapsulated sap. Interestingly enough, the encapsulated sap was completely penetrated into human cancer cells within 30 min after addition. It showed that the encapsulation of the sap definitely increased its biological activities, which can expand its use to wide range of food industries.

• Geophysics and Geophysical Exploration
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• v.8 no.4
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• pp.270-279
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• 2005

Under the research project supported by Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT), we have conducted the development of GPR systems for landmine detection. Until 2005, we have finished development of two prototype GPR systems, namely ALIS (Advanced Landmine Imaging System) and SAR-GPR (Synthetic Aperture Radar-Ground Penetrating Radar). ALIS is a novel landmine detection sensor system combined with a metal detector and GPR. This is a hand-held equipment, which has a sensor position tracking system, and can visualize the sensor output in real time. In order to achieve the sensor tracking system, ALIS needs only one CCD camera attached on the sensor handle. The CCD image is superimposed with the GPR and metal detector signal, and the detection and identification of buried targets is quite easy and reliable. Field evaluation test of ALIS was conducted in December 2004 in Afghanistan, and we demonstrated that it can detect buried antipersonnel landmines, and can also discriminate metal fragments from landmines. SAR-GPR (Synthetic Aperture Radar-Ground Penetrating Radar) is a machine mounted sensor system composed of B GPR and a metal detector. The GPR employs an array antenna for advanced signal processing for better subsurface imaging. SAR-GPR combined with synthetic aperture radar algorithm, can suppress clutter and can image buried objects in strongly inhomogeneous material. SAR-GPR is a stepped frequency radar system, whose RF component is a newly developed compact vector network analyzers. The size of the system is 30cm x 30cm x 30 cm, composed from six Vivaldi antennas and three vector network analyzers. The weight of the system is 17 kg, and it can be mounted on a robotic arm on a small unmanned vehicle. The field test of this system was carried out in March 2005 in Japan.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.26 no.5
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• pp.403-408
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• 1993

To clarify the effects of killing methods on biochemical changes of plaice, Paralichthys olivaceus muscle at early period after death, cultured plaices were killed by the following four different methods; 1. spiking at the brain instantly. 2. letting them to die in the air. 3. dipping in sea water including anesthetic. 4. electrifying in sea water. Immediately after death, the changes in ATP and its related compounds, ATP breakdown, and IMP or lactate accumulation rates of muscle during storage at $5^{\circ}C$ were studied. ATP in samples killed by letting and electrifying were decomposed more rapidly than spiking and dipping samples. The rate constant of ATP breakdown were $0.429h^{-1}$ for samples killed by electrifying, $0.224h^{-1}$ for letting samples, $0.195h^{-1}$ for spiking samples, and $0.167h^{-1}$ for dipping samples. The maximum speed and content of IMP or lactate accumulation were showed in samples killed by electrifying among the all killing methods. The rate constant of lactate accumulation were $2.256h^{-1}$ for samples killed by electrifying, $1.123h^{-1}$ for letting samples, $0.534h^{-1}$ for spiking samples, and $0.526h^{-1}$ for dipping samples. From the results above, it was revealed that electrifying in sea water could accelerate ATP breakdown and accumulation of IMP or lactate among the all killing methods. The other hand, dipping in sea water including anesthetic delayed those changes.

• Food Science and Preservation
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• v.16 no.6
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• pp.830-837
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• 2009

A total of 24 processed barley samples produced in Korea, 9 split and 15 pressed, were analyzed for protein, $\beta$-glucan, and amylose content whiteness cooking characteristics (water absorption and expansibility) and pasting properties, with respect to the areas in which they were grown. Split and pressed barley products from Japan were compared. Both forms of barley products had similar contents of protein and $\beta$-glucan. Whiteness was higher in pressed barley than in split barley. Split barley produced in Korea had a higher water absorption (342-436%) and expansibility (449-608%) than did pressed barley. Japanese processed barley products were much lower in protein (4.4-6.6%, w/w) and showed a higher whiteness grade than did Korean products. Whiteness of pressed barley ranged from 57.2-68.3 and was higher than that of split barley, but split barley product showed better cooking characteristics than did pressed barley. Japanese products were similar to Korean materials in this respect. A negative correlation was observed between protein content in and whiteness of processed barley products (r=-0.5112, p<0.01). Waxy barley products had a lower pasting temperature, and showed higher breakdown and lower setback than did non-waxy barley products. The pasting properties of Japanese products were different from those of Korean materials. The pasting temperatures of Japanese split and pressed barley were lower, and the setback much higher, than seen with Korean products. The results show that both splitting and pressing efficiently improve the cooking characteristics of barley. The processing of waxy barley was particularly effective.

• The KIPS Transactions:PartC
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• v.10C no.5
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• pp.625-634
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• 2003

More than a decade after its initial proposal, deployment of IP Multicast has been limited due to the problem of traffic control in multicast routing, multicast address allocation in global internet, reliable multicast transport techniques etc. Lately, according to increase of multicast application service such as internet broadcast, real time security information service etc., overlay multicast is developed as a new internet multicast technology. In this paper, we describe an overlay multicast protocol and propose fast join mechanism that considers switching of the tree. To find a potential parent, an existing search algorithm descends the tree from the root by one level at a time, and it causes long joining latency. Also, it is try to select the nearest node as a potential parent. However, it can't select the nearest node by the degree limit of the node. As a result, the generated tree has low efficiency. To reduce long joining latency and improve the efficiency of the tree, we propose searching two levels of the tree at a time. This method forwards joining request message to own children node. So, at ordinary times, there is no overhead to keep the tree. But the joining request came, the increasing number of searching messages will reduce a long joining latency. Also searching more nodes will be helpful to construct more efficient trees. In order to evaluate the performance of our fast join mechanism, we measure the metrics such as the search latency and the number of searched node and the number of switching by the number of members and degree limit. The simulation results show that the performance of our mechanism is superior to that of the existing mechanism.

• Korean journal of food and cookery science
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• v.12 no.4
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• pp.527-534
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• 1996

enistein (G), and daidzein (D), the major isoflavones, were analyzed in 14 varieties of Korean soybean and various processed soybean products by using high performance liquid chromatography. Isoflavone contents (G+D) were greatly variable among varieties ranged from 308.2 $\mu\textrm{g}$/g to 1,134.2 $\mu\textrm{g}$/g and highest in Danyopkong and Jinpumkong. Among hypocotyl, cotyledon and hull of soybean the concentration of the isoflavone (G+D) in the hypocotyl was highest ranged from 2,971.7 $\mu\textrm{g}$/g to 5,704.9 $\mu\textrm{g}$/g. The distributions of genistein and daidzein were also different in hypocotyl, cotyledon and hull. Higher ratio of daidzein to genistein (D/G) was found in the hypocotyl (4-12) compared to cotyledon and hull (0.1-4). Isoflavone (G+D) contents of soymilks (Sinpaldal#2, Eunhakong) prepared at 16 hour hydration were decreased to 1.1-1.2 times compared with that at 8 hour hydration. Commercial soymilks contained much lower isoflavone (G+D) than laboratory soymilks. Soybean curd (Eunhakong) prepared with MgCl$_2$ showed higher isoflavone (G+D) contents than that with CaSO$_4$. But these values of two different soybean curds made at laboratory were similar to those of 3 commercial curds. The concentration of the isoflavones in soybean sprout separated with 3 parts revealed highest in the head and lowest in the stem. Compared with non-fermented soybean foods the fermented soybean produfts, Kochujang and soybean paste, Duen Jang, showed very low contents of isoflavone (G+D),2.8-3.0 $\mu\textrm{g}$/ｇ, 35.9-63.6 $\mu\textrm{g}$/ｇrespectively.