• Proceedings of the SAREK Conference
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• 2004.06a
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• pp.143-143
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• 2004

• Journal of The Korean Society of Agricultural Engineers
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• v.53 no.1
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• pp.9-15
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• 2011

Highly pathogenic avian influenza could not be identified visually. It takes time to identify the symptoms by its incubation period. Without taking a quick step, the diffusion area of HPAI has dramatically increased, the extent of damage becomes bigger. In network research, the algorithm of finding the central node on the network applied to various diffusion of epidemic problems, was used in control system of tracing the diffusion path, blocking central nodes. This study tried to make the diffusion of HPAI network model for the crowded farms area, and reduce the diffusion rate to control the high-risk farms.

• International Journal of Industrial Entomology and Biomaterials
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• v.20 no.2
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• pp.37-43
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• 2010

The wild silkworm, Antheraea mylitta Drury (Lepidoptera: Saturniidae) is a polyphagous silk producing insect that feeds on Terminalia arjuna, T. tomentosa and Shorea robusta and is distributed in the forest belts in different states of India. Phenotypically distinct populations of the A. mylitta are called "eco-race" or "ecotypes". Genetic improvement of this wild silkworm has not progressed much due to lack of adequate information on the factors that control the expression of most of the economically important traits. Considering the amazing technological advances taking place in molecular biology, it is envisaged that it is now possible to take greater control on these intractable traits if a combination of genetic, molecular and bioinformatics tools are used. Linkage disequilibrium (LD) mapping is one such approach that has extensively been used in both animal and plant system to identify quantitative trait loci (QTLs) for a number of economically important traits. LD mapping has a number of advantages over conventional biparental linkage mapping. Therefore, LD mapping is considered more efficient for gene discovery to meet the challenge of connecting sequence diversity with heritable phenotypic differences. However, care must be taken to avoid detection of spurious associations which may occur due to population structure and variety interrelationships. In this review, we discuss how LD mapping is suitable for the dissection of complex traits in wild silkworms (Antheraea mylitta).

• The Transactions of the Korean Institute of Electrical Engineers
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• v.35 no.12
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• pp.541-554
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• 1986

This paper presents the results of driving performance analysis of permanent magnet synchronous motor using a microprocessor based control system. The system consists of three phase power transistor inverters, three phase controlled rectifier, three central processing units, and sensors. The three CPUs are, respectively, used to generate PWM control signals for the inverter generating three phase sine wave, to generate the gate control signals for firing the converter, and to supervise other two CPUs. The supervisor is used to compute PI control algtorithm to three phase reference sine wave for the inverter. It is also used to maintain a constant voltage frequency ratio for the converter operating as a constant torque controller. The inverter CPU retrieves precomputed PWM patterns from look up tables because of computation speed limitations found in almost available microprocessors. The converter CPU also retrieves precomputed gate control patterns from another look-up tables. For protecting the control ststem from any damage by extraordinary over currents, the supervisor receives the data from current sensor, CT, and break down the CB to isolate the circuits from source. A resolver has a good performance characteristics of overall speed range, especially on low speed range. Therefor the speed control accuracy is impoved. The microprocessor based PM synchronous motor control system, thus, has many advantages such as constant torque characteristics, improvement of wave, limitation on extraordinary over currents, improvement of speed control accuracy, and fast response speed control using multi-CPU and look-up tables.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.19 no.8
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• pp.1578-1586
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• 1994

In this paper, a new overload control scheme is proposed for a stored program control system. The proposed control scheme is fit for a distributed architecture. In a distributed architecture, most of the call control functions are distributed to many subscriber control processors(SP) and some functions as number translation and routing control are centralized to central processors(CP). Therefore the performance of the CP is critical to the switching system. We needed a control scheme that ensures the proper operation of the CP in overload condition. We conducted lots of simulation experiments to evaluate the performance of the proposed overload control scheme and concluded that the proposed overload control scheme is very effective for a distributed architecture.

• Journal of Positioning, Navigation, and Timing
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• v.10 no.2
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• pp.145-151
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• 2021

According to the Korea Augmentation Satellite System (KASS) system milestone, Site Acceptance Test (SAT) has three steps test until the end of the project. SAT#1 is the first time of SAT steps and verify the KASS Reference Station (KRS) and Sub System (S/S) for the monitoring and controllable. After the equipment and software were installed at the Mission Control Center (MCC) with Central Monitoring and Control Simulator (CMS) for the SAT#1, the 1:1 test was progressed when the KRS and S/S are ready to test. SAT#1 has a 10 steps test case and it was progressed each KRS sites. The test was finished throughout the real-time monitoring and the data collection including the data analysis all of the 7 KRS sites. Finally SAT#1 was completed on December 2020 with successfully.

• Proceedings of the KIEE Conference
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• 1996.07b
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• pp.1063-1065
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• 1996

As PLC has become central to today's FA environment, the importance of developing and providing special-module of PLC such as Analog-module, PID-module, Temperature Control-module has increased. In this paper introduces the Temperature Control-module which is developed by LGIS R&D lab. and presents the availability of PLC-control system with Temperature Control-module.

• The Journal of the Korean dental association
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• v.49 no.6
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• pp.321-326
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• 2011

Neuropathic pain is caused by functional abnonnalities of structural lesions in the peripheral or central nervous system, and occurs without peripheral nociceptor stimulation. Trigeminal neuropathy always pose differential location difficulties as multiple diseases are capablc of producing them: they can be the result of traumatism, tumors, or diseases of the connective tissue, infectious or demyelinating diseases, or may be of idiopathic origin. There are a number of mechanisms described as causing neuropathy. They can be described as ectopic nerve activity, neuroma, ephatic trasmission, change of sodium channel expression, sympathetic activity, central sensitization, and alteration in central inhibition systems. More than I mechanism may be active to create individual clinical presentations. In order to provide better pain control, the mechanism-based approach in treating neuropathic pain should be familiar to physicians.

• Proceedings of the KIEE Conference
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• 2015.07a
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• pp.1308-1309
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• 2015

자력발전소 계측제어시스템은 과거의 아날로그 설비에서 디지털설비로 개선되고 있으며, 신규로 건설되는 발전소에서는 모든 시스템이 디지털화 되었다. 디지털설비는 하드웨어와 소프트웨어, 통신기능이 통합된 매우 복잡한 설비이며, 기존 하드웨어를 중심으로한 신뢰도 분석방법으로는 신뢰도를 확인하는데 한계가 있다. 따라서 본 논문에서는 기존의 신뢰도 분석방법의 한계를 극복하기 위하여 신뢰도 검증설비를 구성하여 다양한 시나리오에 의한 장기 종합시험을 수행하는 방식으로 신뢰도를 보증할 수 있는 방법과 구성들을 제시한다.

• Journal of Korean Society on Water Environment
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• v.21 no.2
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• pp.132-140
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• 2005

The pilot test of a new alternative for small wastewater treatment system has been conducted for two years. It consists of a hybrid bioreactor and the expert system including the process control logic, PLC system, and HMI for the process automation. In order to monitor and remote control its status, the real-time data was transferred from the on-site control center to the central station via a wireless local area network. More efficient and stable performances were observed at automatic operating mode compared with the manual. On an average, COD, SS, T-N and T-P concentrations in the effluent from the hybrid bioreactor were less than 14, 7, 12 and 0.9 mg/L, respectively. According to the result from pilot tests, the quality of treated wastewater with sand filtration was enough to be utilized again.