• Journal of the Korean Institute of Intelligent Systems
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• v.17 no.3
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• pp.310-315
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• 2007

When a mail was given to users, each user's response could be different according to his or her preference. This paper presents a solution for this situation by constructing a u!;or preferred ontology for anti-spam systems. To define an ontology for describing user behaviors, we applied associative classification mining to study preference information of users and their responses to emails. Generated classification rules can be represented in a formal ontology language. A user preferred ontology can explain why mail is decided to be spam or non-spam in a meaningful way. We also suggest a nor rule optimization procedure inspired from logic synthesis to improve comprehensibility and exclude redundant rules.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2006.05a
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• pp.913-916
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• 2006

의료시스템은 모든 것이 병원 네트워크를 중심으로 의료 서비스가 제공되어 진다. 하지만 자연재해, 천재지변과 같은 갑작스런 환자 발생으로 인한 응급 이동 사항, 혹은 진료자의 외진 및 환자 방문시에는 일반 데스크탑 PC에서 이루어지는 상태의 의료 서비스가 아닌 휴대하기 간편하고 언제 어디서나 의료서비스를 받을 수 있는 Personal Digital Assistant (PDA)와 같은 휴대용 기기에서의 의료시스템이 필요하다. PDA는 휴대가 용이하며 유선 네트워크 시스템에 구애받지 않는 무선 모바일 장비로서 무선 통신이 가능한 곳이라면 언제 어디서라도 환자에 대한 의료 정보를 조회할 수 있다. 또한 PDA의 통신 기술로서 병원과의 실시간 통신이 가능하여 응급 환자에 대해 빠른 진료를 제공 할 수 있다. 이와 더불어 임베디드기기 프로세서의 발달로 인하여 연산처리 기술도 많은 향상을 가져왔고 이로 인하여 기존의 PDA에서의 문제였던 DICOM영상의 조회 및 처리속도에도 많은 향상을 가져왔다. 이에 본 연구에서는 의료영상 표준인 DICOM표준을 따르며 이동성이라는 장점을 통하여 언제 어디서나 손쉽게 진료자가 환자의 의료정보 및 의료 영상을 조회할 수 있도록 하는 PDA용 모바일 의료영상 조회 시스템을 PXA255 기반의 Embedded Linux 상에서 QT/C++을 사용하여 구현하였다.

• The Journal of the Korea institute of electronic communication sciences
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• v.14 no.3
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• pp.579-586
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• 2019

The purpose of this study is to determine the rapid saving of life through the drones when natural disasters such as earthquake and fire occur. Drones are equipped with riders, temperature, hazardous gas sensors and wireless cameras are registered with the application server for monitoring the disaster site and real-time monitoring functions are performed to identify the situation on site before rescuing personnel are active. When monitoring finds a person to save, the application server provides real-time image information for effective life-saving.

• Korean Journal of Ichthyology
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• v.2 no.1
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• pp.88-94
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• 1990

Natural hybrids between Pungitius sisensis sinensis and P. sinensis kaibarae were found in their sympatric area, a streamlet below Chibyon Reservoir in Kangnung city, Kangwondo, Korea. P. sinensis sinensis and P. sinensis kaibarae showed the same electropherograms as reported previously. However, about 10% of the specimens had peculiar banding patterns and they seemed to be hybrid between the two subspecies. They are divided further into two groups: sinensis-type and kaibarae-type hybrid. Two morphometric characters, snout length and depth of caudal peduncle, indicated the hybrid's property well. The color of testis of P. sinensis sinensis and P. sinensis kaibarae was grey and black, respectively, but that of hybrid was intermediate. The problem of reproductive isolation between the two groups raised by the finding of their hybrids was discussed.

• Journal of Soil and Groundwater Environment
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• v.10 no.6
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• pp.1-9
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• 2005

Soil is polluted by an agricultural chemicals, the effluence of a crystal and sewage sludge, illegal discharging of waste water or waste matter and so on. Soil pollution that accompanies a groundwater and the crops contamination has a large effect on people's living. By polluters pay principle, when a soil was polluted, polluters take the responsibility of clean-up and compensation for damages. The character of the responsibility is a strict liability. When joint polluters exist in a soil pollution, they bear collective responsibility. But they are exempted from obligation in case of a natural calamity and war. The polluters who are poor contribution of pollution take a partition responsibility but it is not easy to prove that. The concerned parties of purification liability in a soil pollution are polluter, an owner or occupant of a contaminated site, and a grantee. But when we do not appoint the polluter or he cannot do a cleanup, municipal must put in effect the purification. In such a case, another parties who are related to the contamination should take upon themselves a liability. The province of responsible parties, therefore, is required to extend to an owner or operator of a facility, a carrier and lender.

• Journal of Environmental Science International
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• v.27 no.8
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• pp.689-699
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• 2018

The changes on community structures of benthic macroinvertebrates, relevance to the environment and interrelationship between benthos were studied over two years in stream with large environmental disturbance, which caused by localized heavy rain during Typhoon Chaba in October 2016. As a result, the number of species and individuals were increased after localized heavy rain, especially numbers of individuals of Ephemeroptera and Plecoptera were greatly increased. On the contrary, those of Semisulcospira libertina and Semisulcospira forticosta of Mesogastropoda were greatly decreased. Dominant species was Baetis fuscatus of Ephemeroptera, numbers of species and individuals of Ephemeroptera, Plecoptera and Trichoptera(EPT group) were dramatically increased from 26 species, 110 individuals to 32 species, 365 individuals respectively. This suggests that the change of river bed and flow velocity due to heavy rain provided a suitable environment for the EPT group that preferred the rift of a stream. In the functional feeding group, only gathering collectors and filtering collectors were identified in autumn of 2017 because some functional groups preferentially adapted to the changed environment. The interspecific competition and environmental condition were the worst in autumn after heavy rain due to the increase individuals of some species. The ecological score of benthic macroinvertebrate community(ESB) was higher after the heavy rain than before. Results of the Group Pollution Index(GPI), Korean Saprobic Index(KSI) and Benthic Macroinvertebrate Index(BMI) were similar to those before and after heavy rainfall. Therefore, ESB was the most discriminating method for estimating the biological water quality in this study. Some species that are sensitive to water quality changes still appear or increase individuals in the area under investigation after the heavy rain. On the other hand, the individuals of some pollutant species decreased. This is thought to be because the habitat fluctuation caused by heavy rainfall has improved the water environment.

• The Journal of the Korea Contents Association
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• v.9 no.7
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• pp.225-232
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• 2009

This study conducted the following experiment to examine effects of cardiovascular function on lumbar stabilization exercise(LSE) in floor or swiss ball. This experiment was conducted to compare heart rate, systolic blood pressure, diastolic blood pressure and peripheral vascular oxygen saturation effects by lumbar stabilization exercise in floor or swiss ball with 18 normal adult and it divided 9 subjects. experiment group (1) is applying LSE on floor group and (2) is applying LSE on swiss ball group. Heart rate was measured by portable heart rate manometer, blood pressure was measured by hemodynamometer, and peripheral vascular oxygen concentration was measured using a computerized NURYTEC measuring apparatus analysis. These result lead us to the conclusion that systolic blood pressure and peripheral vascular oxygen concentration were influenced by LSE. but there was not differential effect between each groups. These results suggest that LSE has the capability to improve heart rate, blood pressure, peripheral vascular oxygen concentration. Consequently, LSE would be lead to increment of cardiovascular function.

• Journal of the Institute of Electronics Engineers of Korea SC
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• v.38 no.2
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• pp.1-11
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• 2001

In this paper, a chattering alleviation VSS controller for the sinusoidal type BLDC motor is designed. Dead Zone function is proposed to change the chattering occurring in the transient state from high frequency to low frequency and time varying gains arc applied for the control input to eliminate the steady state excessive chattering in the conventional ISM. The proposed Dead Zone function represents the sliding layer composed of two switching surfaces and if a state vector exists in this layer, the chattering don't occur. Simulation and experimental results confirm the useful effects of the above algorithm.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.8 no.6
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• pp.1166-1174
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• 2004

In this paper, a design of RISC-based transmission wrapper processor for TCP/IP protocol stack is described. The processor consists of input and output buffer memory with dual bank structure, 32-bit RISC microprocessor core, DMA unit with on-the-fly checksum capability, and memory module. To handle the various modes of TCP/IP protocol, hardware-software codesign approach based on RISC processor is used rather than the conventional state machine design. To eliminate large delay time due to sequential executions of data transfer and checksum operation, DMA module which can execute the checksum operation along with data transfer operation is adopted. The designed processor exclusive of variable-size input/output buffer consists of about 23,700 gates and its maximum operating frequency is about 167MHz under 0.35${\mu}m$ CMOS technology.

• Journal of agricultural medicine and community health
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• v.6 no.1
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• pp.61-67
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• 1981

This survey was undertaken to evaluate the status of clonorchiasis in Chang-gok Myun, Hong-Seong Gun adjacent to Yedang reservoir from Sept., 1980 to Oct., 1981. A total of 550 subjects (male 318, and female 232) were examined by cellophane-thick smear technique and formalin-ether method. In order to identify the intensity of the Clonorchis sinensis infection, Stoll's egg dilution counting method was also applied to the C. sinensis positive cases. The following results were obtained in this survey; 1. In the examination of 550 subjects, Clonorchis sinensis eggs were found in 167 cases (30.4%). Male subjects showed 43.4% positive rates and female represented 12.5%. 2. The highest prevalence rate of Clonorchis sinensis was found in 40~49 year group in male (64.2%) and 30~39 year group in female (22.0%), although 14.3%~16.7% positive rates were found in young aged group. 3. Mean E.P.G. of Clonorchis sinensis infected cases were 6,148, showing 7,533 in male and 5,193 in female. 4. The degree of intensity of Clonorchis sinensis infection by E.P.G. count was distributed as 30.4% in light infection (1~999), 45.7% in moderate infection (1,000~29,999) and 5.8% in very heavy infection (over 30,000) in male. Female showed 48.3% in light, 37.9% in moderate, 10.3%. in heavy and 3.5% in very heavy infection. 5. Other helminthic infection rate was 15.6% in Ascaris lumbricoides infection, 15.1% in Trichuris trichiura infection and 4.4% of male subjects showed eggs of Taenia species.