• The Journal of the Korea institute of electronic communication sciences
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• v.12 no.4
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• pp.637-644
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• 2017

This paper is based on the information left on SNS by the experienced tourist and, First, the tourist gathers various tourist information from SNS through Smart Tourism as suggested, Second, providing scheduling information for future tourist and the future tourist can modify and apply the information from experienced tourist. Third, the goal of this study is to design virtual tourism service based on above services where future tourist can post and modify tourism scheduling. Therefore, it is to obtain the effect of providing reliable tourism service to maximize the satisfaction of the tour through matching process between experience experiences and experience schedule.

• Journal of the Korea Society for Simulation
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• v.23 no.4
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• pp.197-202
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• 2014

In order to operate multiple UAVs for multiple tasks efficiently, we need a task allocation algorithm with minimum cost, i.e.,total moving distance required to accomplish the whole mission. In this paper, we have proposed the MCBAA (Modified Consensus Based Auction Algorithm) which can be suitably applied to the operation of multiple UAVs. The key idea of proposed algorithm is to minimize sum of distance from current location of agents to location of tasks based on the conventional CBAA. Several simulation test performed on three UAV agents with multiple tasks demonstrates the overall efficiency both in time and total distance.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.18 no.2
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• pp.224-230
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• 2008

This paper is concerned with the active vibration control of building structure by means of the active tuned mass damper and the modified positive position feedback controller. To this end, one-degree-of-freedom spring-mass-damper system equipped with ATMD is considered. The stability condition for the addressed system when applying the proposed PPF controller is derived by Routh-Hurwitz stability criterion. The stability condition shows that the modified PPF controller is absolutely stable if the controller gain is positive. so that the modified PPF controller can be used without difficulty. Theoretical study shows that the modified PPF controller can effectively suppress vibrations as the original PPF controller does in smart structure applications. To investigate the validity of the modified PPF controller, a simple experimental structure with an ATMD system driven by DC motor was built. The modified PPF control algorithm was implemented on Atmel 128 microcontroller. The experimental result shows that the modified PPF controller can also suppress vibrations for the real structure.

• Proceedings of the KIEE Conference
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• 2002.07d
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• pp.2031-2033
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• 2002

고 배속 광디스크 드라이브(ODD) 시스템에서 위치제어 성능을 향상시키기 위해서는 디스크의 면 진동과 수평 진동과 같은 외란에 의한 오차를 감소 시켜야만 한다. 따라서 하드디스크를 포함한 여러 분야에서 뛰어난 외란 제거 성능을 보이고 있는 외란 관측기는 좋은 대안이 될 수 있다. 그러나 ODD 같은 양산용 전자제품에 외란 관측기를 구현하기 위해서는 별도의 계산 장치가 필요하고, 출력신호를 직접 Feedback 신호로 활용해야 하는 경우가 발생한다. 본 논문에서는 ODD 시스템의 외란을 제거하기 위한 수정된 구조를 가지는 오차를 기초로 한 외란관측기(Error Based Modified Disturbance Observer, EM-DOB)를 제안한다. EM-ROB 시스템은 DOB 시스템에 비해 그 구조가 더욱 간편하고 쉽게 구현 할 수 있다는 장점을 가진다. 그리고 제안한 EM-DOB 시스템의 특성을 연구하고 실험을 통해서 EM-DOB의 효용성을 입증하였다.

• Journal of the Korean Institute of Intelligent Systems
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• v.6 no.4
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• pp.49-60
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• 1996

The objective of this paper is to develop an adaptive learning method for fuzzy hypercubes using a neural network. An intelligent control system is proposed by exploiting only the merits of a fuzzy logic controller and a neural network, assuming that we can modify in real time the consequential parts of the rulebase with adaptive learning, and that initial fuzzy control rules are established in a temporarily stable region. We choose the structure of fuzzy hypercubes for the fuzzy controller, and utilize the Perceptron learning rule in order to upda1.e the fuzzy control ru1c:s on-line with the output errors. As a result, the effectiveness and the robustness of this intelligent controller are shown with application of the proposed adaptive fuzzy-neuro controller to control of the cart-pole system.

• Proceedings of the Korean Aquaculture Society Conference
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• 2003.10a
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• pp.66-66
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• 2003

대구는 한대성 어종으로 크기가 1m에 달하는 대형 고급 어종이나 최근 자원량 감소로 인하여 생산량이 급격히 줄어들었다. 대구 자원 증대를 위한 방류 사업은 1981년부터 국립수산과학원 주도로 실시되어 오다가 현재는 수협과 경남도 등에서 수정란을 연안에 뿌리는 방식으로 추진되고 있다. 그러나 지금까지 노력에도 불구하고 방류를 통한 자원 증대 효과는 극히 미진한 것으로 알려져 있어 대구 차원의 실질적 증대를 위해서는 생존율 향상에 도움이 되는 종묘생산에 의한 치어의 방류가 절실히 요구된다. 본 연구에서는 대구의 종묘생산을 위한 생물학적 기초자료를 얻기 위하여 채란, 부화 및 자어사육 결과를 보고한다. 강원연안 대구의 채란은 1월 중순부터 3월 초순까지 가능하였으며, 산란기 암수 GSI는 암컷 33.5, 수컷 13.7이었다. 전장 80.4cm 암컷의 포란수는 363만 개였으며, 복부압박법으로 180만개의 알을 채란할 수 있었다. 채란된 알은 직경 1.08mm의 원형 점착란으로, 습식 인공수정 방법에 의한 수정률은 65%이 었다. 부화는 1시간 이상 세란 후 가두리에서 부화시키는 방법이 효과적이었으며, 수온 4$^{\circ}C$에서는 10일 후 배체형성 후 폐사하였으나, 7$^{\circ}C$에서는 수정 12일 후 65.0%가 부화하여 가장 양호하였다. 1$0^{\circ}C$에서는 수정 8일 후에 30%의 부화율을 보였으며, 13$^{\circ}C$와 16$^{\circ}C$에서는 각각 4일 및 2일 후 발생이 중지되고 폐사하였다. 부화자어는 전장 4.3mm였으며, 부화 45일째 9.3mm로 성장하였다.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.5 no.4
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• pp.23-30
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• 1985

Dynamic pile-driving formulas are widely used in predicting the load capacity of piles in cohesionless soils. However, the accuracy of the formulas has been questioned for a long time due to their oversimplified assumptions and empirical parameters involved in the formulas. The allowable pile capacities calculated by 6 different dynamic pile-driving formulas are compared statistically with the capacities measured in the field, in this paper, to find out the correlations between the calculated capacities and the measured values. The statistical data are then used to evaluate and to adjust the formulas to improve their accuracy. For the greatest accuracy and simplicity of use, it is recommended that the adjusted form of Gates formula be used. When the result of this recommended formula is compared with that of the existing Olson's modified formula, the former is found to be conservative by more than 10 percents.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.29 no.6A
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• pp.589-599
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• 2004

Most models assume the complete debugging environments by requiring a complete software correction in quantitative evaluation of software reliability. But, in many case, new faults are involved in debugging works, for complete software correction is impossible. In this paper, software growth model is proposed about incomplete debugging environments by considering the possibility of new faults involvements, and software faults occurrence status are also mentioned about NHPP by considering software faults under software operation environments and native faults owing to the randomly involved faults in operation before test. While, effective quantitative measurements are derived in software reliability evaluation, applied results are suggested by using actual data, and fitnesswith existing models are also compared and analyzed.

• The Journal of the Korea institute of electronic communication sciences
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• v.11 no.1
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• pp.93-98
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• 2016

A large number of victims or witnesses to incidents and accidents should visit a police station and fill the decree stated. Stated decree workaround discomfort and hygienic problems in unnecessary step process using the fingerprint after you modify the modified portion when due modify the request as of the import or typos recognized that modifications and police in the. Stated decree in the investigation phase when creating KICS and electronic Resources investigation into the identity of the one-touch fingerprint reader linked with the introduction table system and thinning, which can simplify the day of the procedure.

• Journal of Veterinary Clinics
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• v.7 no.2
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• pp.517-519
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• 1990

In vitro maturation and fertilization of oocytes collected from slaughtered bovine ovaries were investigated. Immature bovine extrafollicular oocytes were cultured for 24 hrs. in TCM 199 supplemented with fetal calf serum in a humidified CO$_2$ incubator. Fertilization in vitro was performed using frozen-awed bull semen which was treated by Ca Ionophore A23187. Fourty percentage of oocytes cultured had matured to the metaphase II ; There were-no effects of the concentration of fetal calf serum and of the addition of HEPES on the maturation rate. The mean proportions of in vitro fertilized eggs and of cleaved eggs were 23.1％ and 14.4％, respectively.