• IEMEK Journal of Embedded Systems and Applications
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• v.6 no.6
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• pp.377-382
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• 2011

This paper describes the method of data synchronization among devices for personal cloud services. Existing data synchronization for mobile devices is based on a central server to mobile devices or a PC to a mobile device. However, the purpose of this paper is to share user data in heterogeneous environments, without depending on central server. This technology can be applied to synchronize personal data between a device and a personal cloud storage for personal cloud services. The ad hoc synchronization needs a sync agent service discovery module, a user authentication module, a network adapter, and an application data synchronization module. The method described in this paper is better than existing synchronization technology based on client-server in availability, performance, scalability quality attributes.

• Proceedings of the Korean Society of Plant Pathology Conference
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• 2003.10a
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• pp.151.1-151
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• 2003

Chinese yam(D. opposita Thunb. cv. Jang-Ma) plants showing necrotic mosaic symptom were collected from their growing fields in Andong, Korea. Electron microscoptic examination of negatively stained preparations showed filamentous particles of 660nm in length. The virues purified partially were used to isolate Viral RNA as template for RT-PCR to amplify the CP gene with ChYNMV specific and oligo dT primers. Amino acids sequeces revealed that the viruses shared 99.3％ similarity with ChYNMV(AB044386) which was known as the member of macluravirus. So the viruses from Chinese yam(D. opposita Thunb. cv. Jang-Ma) plants were identified as ChYNMV. Comparing the amino aced sequences of ChYNMV strains with other macluraviruses such as CdMV, NLV and MacMV revealed that N-terminal was the most variable region and conserved regions were present within the genus Macluravirus.

• Proceedings of the Korean Society of Plant Pathology Conference
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• 2003.10a
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• pp.127.2-127
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• 2003

YMV-K strains were purified from D. oppostita Thunb. tv. Dung-Gun-Ma showing mosaic symptom on their leaves. YMV-K strains were filamentous particles of 780nm in length and induced cytoplasmic disorder such as inclusion body formation. Nucleotide and amino acid sequences of 5'-UTR, Pl and CP of YMV-K strains shared 80.8, 64.7 and 98.3％ identity respectively to JYMV J1 in the mean value. Purification of YMV-K strains according to JYMV purification method(S. Fuji) was conducted to product antiserum. With antiserum against YMV-K strains, the Various diagnosis methods such as IC-RT-PCR, DIBA, RIPA and indirect-ELISA were used to detect YMV-K strains in Chinese yam plant.

• Geomechanics and Engineering
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• v.34 no.4
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• pp.425-435
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• 2023

Granite and marble are widely produced and utilized in the construction industry, resulting in significant waste production. It is essential to manage this waste appropriately and repurpose it in recycling processes to ensure sustainability. The utilization of waste materials such as marble and granite waste (MGW) has become increasingly important in geotechnical engineering to improve the physical and mechanical properties of weak soils. This study investigated the applicability of utilizing MGW and cement (C)-MGW mixtures to improve clayey soil. A series of model plate loading tests were carried out in a specialized circular test tank to assess the influence of MGW and C-MGW mixing ratios on clayey soil samples. The samples were prepared by blending MGW and C-MGW in predetermined proportions. It is found that the bearing capacity of clay soil increased by approximately 71% when using MGW and C additives. Moreover, the consolidated settlement values of the clay soil decreased up to 6 times compared to the additive-free case.

• Proceedings of the Korea Information Processing Society Conference
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• 2007.05a
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• pp.1237-1239
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• 2007

This paper proposes a virtual storage system for smart home/office embedded devices by utilizing AoE and HyperSCSI protocols. It relies on current Ethernet infrastructures and aims to provide a low-cost solution for the storage limitation problem on embedded devices. We choose AoE (ATA over Ethernet) and HyperSCSI in our implementation because they are relatively lightweight compared to other network storage protocols such as NFS(Network File System), CIFS(Common Internet File System) and iSCSI(internet Small Computer System Interface). The design and architecture of our proposed virtual system as well as the prototype demonstration are presented in this paper.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.48 no.2
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• pp.127-137
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• 2011

We have developed a wearable device that can convert sensor data into real-time step counts and activity levels. Sensor data on gait were acquired using a triaxial accelerometer. A test was performed according to a test protocol for different walking speeds, e.g., slow walking, walking, fast walking, slow running, running, and fast running. Each test was carried out for 36 min on a treadmill with the participant wearing a portable gas analyzer (K4B2), an Actical device, and the device developed in this study. The signal vector magnitude (SVM) was used to process the X, Y, and Z values output by the triaxial accelerometer into one representative value. In addition, for accurate step-count detection, we used three algorithms: an heuristic algorithm (HA), the adaptive threshold algorithm (ATA), and the adaptive locking period algorithm (ALPA). A regression equation estimating the energy expenditure (EE) was derived by using data from the accelerometer and information on the participants. The recognition rate of our algorithm was 97.34%, and the performance of the activity conversion algorithm was better than that of the Actical device by 1.61%.

• Research in Plant Disease
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• v.9 no.3
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• pp.107-115
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• 2003

Chinese yam (Dioscorea opposita cv. Jang-Ma) plants showing necrotic mosaic symptom were collected from their growing fields in Andong, Euisong, Gunwi and Daegu, Korea. Direct negative stainning method by electron microscope showed filamentous particles of about 660 nm in length. Immunosorbent electron microscopy (ISEM) revealed filamentous particles of 660nm decorated with antiserum of Chinese yam necrotic mosaic virus (ChYNMV). The virues purified partially were used to isolate viral RNA as template for RT-PCR to amplify about 1.2 kbp of 3'-terminal region (coat protein, 3'-UTR) with ChYNMV specific and oligo-dT primers. Amino acids sequences of amplified CP genes revealed that the viruses shared 97.9% similarity with ChYNMV (AB044386) wh ich was known as the member of Macluravirus. So the viruses from Chinese yam (D. opposita cv. Jang-Ma) plants were identified as ChYNMV. Comparing the CP amion acid sequences of ChYNMV strains with other macluraviruses such as Cardamon mosaic virus (CdMV), Narcissus latent virus (NLV) and Maclura mosaic virus (MacMV) revealed that N-terminal was the most varialbe region and conserved regions were present within the genus Macluravirus.

• Journal of Preventive Medicine and Public Health
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• v.22 no.2 s.26
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• pp.208-214
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• 1989

The protective effects of Panax Ginseng extract to oxygen toxicity of mice were studied under 5 ATA hyperbaric oxygen atmosphere. The findings observed are as follows: 1) Administration of Ginseng water extract manifested the prolonging survival time of mice to oxygen toxicity by hyperbaric oxygen atmosphere. After 18 hours of single Ginseng water extract administration and three days, seven days of consecutive Ginseng water extract administration showed the protective effect against oxygen toxicity. 2) Three days and seven days of consecutive Ginseng water extract administration showed the more efficient protective effect than single Ginseng Water extract administration. 3) Seven days of consecutive Ginseng water extract administration did not showed the more efficient protective effect than three days of consecutive Ginseng water extract administration.

• Korean Journal of Soil Science and Fertilizer
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• v.34 no.3
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• pp.199-204
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• 2001

The study was carried out to find effects on growth and yield by drought in Paeonia lactiflora Pallas. The water stress treatment was imposed artificially on April 1 to May 30(top part growth high stage), June 1 to July 30(root growth high stage), August 1 to September 29(late growth stage) and control(below 50kPa) in rain shelter. In drought periods of April 1 to May 30, stem length and number of stem were 67.5cm and 10.4 ea/plant. It showed poor growth compared with control, and root length and diameter also decreased to 27.2cm and 24.5mm, respectively. In root yield, drought treatment of June 1 to July 30 showed lower root yield as $1,809kg\;10a^{-1}$, $1,902kg\;10a^{-1}$ for drought period of August 1 to September 29, compared with $2,039kg\;10a^{-1}$ of control, resulting in 11% and 7% reduction, respectively. Optimum irrigation times (50kPa) was 17 days after continuos rain-off in Spring(April 1 to May 30), 9 days in summer(June 1 to July 30). It could be estimated that effective irrigation point was at least 13 days in after August(Aug. 1 to Sep. 29).

• Korean Journal of Plant Resources
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• v.31 no.5
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• pp.531-537
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• 2018

This study was carried to survey distribution of the nucleotide polymorphisms in heme-binding (HB) domain, which is highly conserved region between 1,210 and 1,240 bp of cytochrome P450, in domestic garlic cultivars. 120 garlic cultivars collected from Korea were classified into seven HB domain variation based on the nucleotide sequence of the domain. Northern type garlic cultivars, collected from Kyungpook, Chungnam, Chungpook and Kangwon province, showed 51.3% of KP2 type nucleotide sequence, 5'-TTT/GGC/GGT/GGA/CGG/AGA/ATA/TGT/CCT/GGA-3' with coding amino acid FGGGRRICPG, 13.7% of KP1, 11.3% of CP, 8.8% of CM and 5% of KW2 types. Southern type cultivars, collected from Kyungnam province, showed 52.5% of KM type nucleotide sequence, 5'-TTT/GGC/GCA/GGA/CGG/AGA/ATT/TGT/CCT/GGA-3' with coding amino acid FGAGRRICPG, 22.5% of KP2, 5.0% of KW2 and 2,5% of CP type nucleotide sequence. These results showed that Korean garlics were cultivated in highly mixed condition even in the same region.