• Journal of Practical Agriculture & Fisheries Research
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• 제15권1호
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• pp.85-93
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• 2013

This study has been conducted to investigate the effect of GA₃ solution dipping treatment after 1 days full bloom on spike growth and fruit quality at harvest of 'Campbell Early' grapevine. The fruit cluster growth(weight, length, width) and fruit stalk(diameter, length) at harvest were increased significantly by GA₃ 10 mg·L^-1 solution dipping treatment compared to control and another concentration. The berry growth (berry No, weight, length, diameter) at harvest showed no difference by treatment GA₃ concentration different. Spike weight was increased by GA₃ 5, 10, 20, mg·L^-1 treatment compared to control, but no difference GA₃ 40 mg·L^-1 treatment. The degree of compact berry, bloom, skin color and SSC at harvest by GA₃ solution dipping treatment were not significantly different from those of control. but increased seedlessness induction by GA₃ 10 mg·L^-1 treatment. The occurrence percent of berry cracking by GA₃ 5, 10, 20, 40 mg·L^-1 treatment significantly decreased. The bitter rot of berry harvest showed no difference by treatment GA₃ concentration different. Total spike length was increased by GA₃ 5, 10 mg·L^-1 treatment compared to control and GA₃ 20, 40 mg·L^-1 treatment. The spike length of 1st from 15th to position increased by GA₃ 10 mg·L^-1 treatment.

• Journal of Korean Society of Forest Science
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• 제102권3호
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• pp.420-427
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• 2013

This study was conducted to analyze growth characteristics and adaptability of poplar clones under the treatment of liquid pig manure. The average of survival rate was 33% better at control than the treatment under age of 5 years. But, tree height and DBH growth were higher at the treatment than control. Populus euramericana 'Eco28' showed the highest survival rate (97.9%) under the treatment. P. euramericana 'Eco28' and P. deltoides hybrid 'Dorskamp' could be selected as superior clones for height and DBH growth under the liquid pig manure treatment. The above-ground biomass production was also investigated when the poplar clones were 5 years old. The aboveground biomass under the liquid pig manure treatment was, on average. 52.6 ton/ha, which was 80% higher than control (29.1 ton/ha). P. euramericana 'Eco28' (73.6 ton/ha) and P. deltoides hybrid 'Dorskamp' (71.1 ton/ha) showed superior biomass production than other clones at the treatment of liquid pig manure. Based on survival, growth and demage traits, the adaptability of poplar clones to liquid pig manure treatment was estimated. P. deltoides hybrid 'Dorskamp' and P. euramericana 'Eco28' showed better adaptability to the treatment. P. nigra ${\times}$ P. maximowiczii '62-10' and P. koreana ${\times}$ P. nigra var. italic 'Suwon' were identified as poor adaptability clones.

• Korean Journal of Weed Science
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• 제11권2호
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• pp.87-99
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• 1991

The experimental growth regulators Hoe78784 and PP-333 significantly reduced lodging in all rices. However, they did not significantly affect the crop vegetative characteristics and yield components, except by decreasing plant height when both growth regulators were applied at booting stage. Grain yield of IR21820-154-3-2-2-3 increased due to reduced lodging when Hoe78784 and PP-333 were applied at booting. These growth regulators increased the thickness and diameter of the culm. Applying CCC did not affect lodging in all test varieties. CCC-treated varieties and the control showed lower number of vascular bundles and culm thickness and diameter of the third and fourth internodes. Hoe78784 and PP-333 significantly reduced internode length from the second to the third internode in short-statured varieties. In tall varieties. reduction extended up to the fourth internode. Culm N content of the varieties did not significantly differ among treatments, except in IR8. Culm P content also did not differ significantly among treatments. although K and Si content was the highest than control when Hoe78784 was applied.

• Review of KIISC
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• 제12권4호
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• pp.23-45
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• 2002

공개키 기반구조는 공개키 알고리즘을 이용하여 정보보호 서비스를 제공하는 정보처리 및 정보통신시스템에서 사용자 공개키의 무결성과 인증성을 제공하기 위한 중요한 기반 서비스이다. 공개키에 대한 무결성을 제공하기 위해서는 전자서명이 요구되며, 인증성을 제공하기 위해서는 제3의 신뢰기관이 요구된다. 제3의 신뢰기관이 통칭 인증기관이다. 사용자는 인증서를 이용하여 응용에게 공개키의 무결성과 인증성을 알려주며, 응용은 인증서에 포함되어 있는 공개키를 이용하여 정보통신 시스템에서 다양한 정보보호 서비스를 실현한다. 인증서 정책은 하나의 인증서를 특정응용에 적용 가능한지를 알려주기 위한 법칙들의 집합이라고 될 수 있다. PKI 영역(Domain)은 하나의 통일되고 합의된 인증서 정책으로 구현되는 인증기관들과 사용자들의 집합이라고 볼 수 있다. PKI 응용 영역간의 상호 연동은 PKI 서비스를 확장하기 위하여 중요한 기술이다. 본 고에서는 PKI 영역간 상호 연동을 위한 공개키 기반구조의 개요와 필요성 등을 기술하고, IETF PKIX의 공개키 기반구조 표준화 동향을 분석하며, 상호 연동을 위하여 요구되는 인증서 정책과 인증서 확장자를 살펴보고, 대표적인 주요 인증서 정책들을 분석하며, 최근 PKI 포럼에서 연구된 PKI 영역간 상호 연동 방식을 살펴보고, 마지막으로 상호 연동 방식간의 특징과 장단점을 제시한다.

• Proceedings of the Korean Information Science Society Conference
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• 한국정보과학회 2001년도 가을 학술발표논문집 Vol.28 No.2 (3)
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• pp.352-354
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• 2001

오늘날 우리는 맡은 발전을 거듭한 지능망 서비스를 일상 생활에서 직간접적으로 접하고 있으며. 서비스가 다양화 되고 그 품질이 중요시 되면서 TCAP(Transaction Capability Application Part)의 높은 성능과 안정성에 대한 요구가 증대되어 왔다. 본 논문에서 제시하는 고성능 무중단 TCAP 모델은 원격지에 위치한 다중 TCU(Transaction Capability User)에게 TCP/IP 소켓을 제공하고 폴링(Polling)을 수행하여 TCU상태를 효과적으로 관리하며, 네트워크 장애나 하위 스택 프로세스 문제로 서비스가 지속될 수 없는 경우 이중화 메커니즘을 적용하여 서비스의 중단을 최소화 한다. TCU 어플리케이션 개발자를 위해 이중화에 대한 고려 엄이 TCAP 메시지론 사용할 수 있도록 API를 제공 하여 실제 서비스 적용에 범용성과 편리성을 제공한다. 기존에 개발되어 사용되고 있는 TCAP보다 메시지 처리 및 전송 효율을 높이기 위한 프로세스 구조와 무중단 서비스 제공을 위한 이중화 모델을 설계하고 구현하였다. 설계 및 구현 내용을 검증하기 위해 ITU-T에서 권고하는 적합성 시험을 실시하고, 테스트 베드를 구축 해 성능 시험을 수행 한다.

• The Journal of the Korea institute of electronic communication sciences
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• 제11권1호
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• pp.119-124
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• 2016

In this paper, we studied on MAC(Media Access Control) protocol for UAVs application. According to the number of UAVs, ground control station should control properly increased UAVs. So, we applied CSMA/CA that used in current civil aircraft to UAV communications and verified the applicability through comparison of throughput and delays of data with various message sizes, In the results, we confirmed applicability for UAVs MAC protocol.

• Journal of the Korean Institute of Intelligent Systems
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• 제20권4호
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• pp.580-585
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• 2010

In this paper, The object Tracking System is designed by SOPC based Nios II embedded processor and C2H compiler. And this system using single PTZ camera can effectively control IPs in the platform of SOPC based Nios II Embedded Processor and creating IP by C2H(C-To-Hardware) compiler for image-in/output, image-processing and devices of communication that can supply various monitoring information to network or serial. Accordingly, Special quality and processing speed of object tracking using high-quality algorism in the system is improved by hardware/software programming methods.

• Journal of the Korean Society of Food Science and Nutrition
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• 제43권2호
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• pp.287-292
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• 2014

The objectives of this study were to examine the effects of red clay-processed nano-materials (RCPM) on the quality characteristics of eel (Anguilla japonica). Both eels treated with RCPM and control were farm-raised under identical environments and were commercially processed. General components, texture, nutrients, antioxidant activities, and sensory analysis were performed. RCPM-treated eels showed significantly higher DPPH radical scavenging activities and FRAP values than the of control, indicating higher antioxidant activities of eels raised by RCPM. The amounts of niacin and tocopherol in RCPM-treated eels were higher than those of the control. For analysis of freeze-thaw stability, RCPM-treated eels showed more stable texture over freeze-thaw three treatment cycles. Descriptive panelists perceived eels raised by RCPM to be less oily than the control. Overall, RCPM exhibited positive effects on the quality of farm-raised eels. Therefore, RCPM would be of benefit to produce high value-added eels of premium quality.

• Food Science and Preservation
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• 제11권3호
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• pp.304-312
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• 2004

Early harvested Satsuma mandarin (Citrus unshiu) was treated with hot air at 45$^{\circ}C$ for 2, 4, and 6 hours and stored at 5$^{\circ}C$ for 3 weeks and additional one week at 18$^{\circ}C$ (simulated shelf-life) in order to examine the effect of mild heat treatment on the storage quality of the citrus fruits. Quality attributes of the sample fruits evaluated during storage included the respiration rate, internal gas composition, pH, titratable acidity, soluble solids content, flesh weight loss, firmness, peel color, decay ratio, and sensory properties. The initial respiration rates, just after hot air treatment, were significantly higher in the heat-treated fruits compared to the untreated. However, during storage at 5$^{\circ}C$, the respiration rates showed a similar level in all treatments. Internal gas composition exhibited no significant difference between the heat-treated and untreated samples. Hot air treatment also exerted no significant effects on the pH, titratable acidity, soluble solid contents, flesh weight loss, firmness, and peel color of the fruits during the whole storage period. The decay ratio was manifestly lower in the heat-treated fruits than the untreated. For sensory attributes including visual and organoleptic quality, no significant difference was observed among sample fruits. Results suggested that mild heat treatment with hot air at 45$^{\circ}C$ for 4-6 hours could be used as an effective preconditioning method to keep the postharvest quality of Satsuma mandarin by reducing the decay incidence remarkably during storage.

• Horticultural Science & Technology
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• 제29권2호
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• pp.81-86
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• 2011

The effects of girdling on fruit quality and cold resistance of 'Kyoho' grapes were investigated. Girdling treatment was conducted on the trunk at 10 cm above ground with 1 cm width and grapes were harvested at 90 and 110 days after full bloom to compare the fruit quality. First harvesting rate in girdling treatment was higher than that in non-girdling treatment and coloration was also higher in girdled vines at the final harvest. In other words, coloring process of grape was promoted and enhanced by girdling, but this effect of coloring improvement was decreased after successive girdling treatment. Fruit quality showed no difference between the treated and non-treated berries, but fruit cracking rate was lower in girdled treated berries. Girdled trees were weakened and suffered from freezing damage. Especially, most grapevines withered up after being girdled for three consecutive years. Although girdling had effect on improving the berry coloring significantly, the effect wore off with continuous girdling. And it was possible that consecutive girdling leaded to wither and growth suppression especially in grapevines. These adverse effects may make the continuous girdling technique unsuitable in practice for 'Kyoho' grape.