• International Journal of Computer Science & Network Security
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• 제21권8호
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• pp.196-202
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• 2021

DNA sequencing provides fundamental data in genomics, bioinformatics, biology and many other research areas. With the emergent evolution in DNA sequencing technology, a massive amount of genomic data is produced every day, mainly DNA sequences, craving for more storage and bandwidth. Unfortunately, managing, analyzing and specifically storing these large amounts of data become a major scientific challenge for bioinformatics. Those large volumes of data also require a fast transmission, effective storage, superior functionality and provision of quick access to any record. Data storage costs have a considerable proportion of total cost in the formation and analysis of DNA sequences. In particular, there is a need of highly control of disk storage capacity of DNA sequences but the standard compression techniques unsuccessful to compress these sequences. Several specialized techniques were introduced for this purpose. Therefore, to overcome all these above challenges, lossless compression techniques have become necessary. In this paper, it is described a new DNA compression mechanism of pattern matching extended Compression algorithm that read the input sequence as segments and find the matching pattern and store it in a permanent or temporary table based on number of bases. The remaining unmatched sequence is been converted into the binary form and then it is been grouped into binary bits i.e. of seven bits and gain these bits are been converted into an ASCII form. Finally, the proposed algorithm dynamically calculates the compression ratio. Thus the results show that pattern matching extended Compression algorithm outperforms cutting-edge compressors and proves its efficiency in terms of compression ratio regardless of the file size of the data.

• 반도체디스플레이기술학회지
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• 제21권2호
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• pp.32-37
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• 2022

As semiconductors become finer, equipment must perform precise and accurate processes to achieve the desired wafer fabrication requirement. Radio frequency power delivery system in plasma system plays a critical role to generate the plasma, and the role of impedance matching unit is critical to terminate the reflected radio frequency power by modifying the impedance of the matching network in the plasma equipment. Impedance matching unit contains one fixed inductor and two variable vacuum capacitors whose positions are controlled two step motors. Controlling the amount of vacuum variable capacitor should be made as soon as possible when the mismatched impedance is detected. In this paper, we present the impedance matching algorithm using the phase sensor.

• Journal of Information Technology Applications and Management
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• 제12권4호
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• pp.93-104
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• 2005

Recently, RFID/USN is one of fundamental technologies in information and communications networks. Low-Rate WPAN, IEEE802.15.4 is a low-cost communication network that allows wireless connectivity in applications with limited Power and relaxed throughput requirements. Its applications are building automation, personal healthcare, industrial control, consumer electronics, and so on. Some applications require location information. Of course location awareness is useful to improve usability of data Low-Rate WPAN Is regarded as a key specification of the sensor network with the characteristics of wireless communication, computing, energy scavenging, self-networking, and etc. Unfortunately ZigBee alliance propose a lot of applications based on location aware technologies, but the specification and low-rate WPAN devices don't support anything about location-based services. RSSI ( Received Signal Strength indication) is for energy detection to associate, channel selection, and etc. RSSI is used to find the location of a potable device in WLAN. In this paper we studied indoor location awareness using vector matching of RSSI in low-Rate wireless PAN. We analyzed the characteristics of RSSI according to distance and experimented location awareness. We implemented sensor nodes with different shapes and configured the sensor network for the location awareness with 4 fixed nodes and a mobile node. We try to contribute developing location awareness method using RSSI in 3-dimension space.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1995년도 Proceedings of the Korea Automation Control Conference, 10th (KACC); Seoul, Korea; 23-25 Oct. 1995
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• pp.364-367
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• 1995

In this paper, a design method of learning flight control system via input matching is proposed. The proposed learning control system is a simple structure which has an artificial neural network and feedback mechanism, and it is a useful method to control nonlinear systems.

• 한국측량학회지
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• 제31권4호
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• pp.285-292
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• 2013

본 연구는 도로 네트워크를 분할한 뒤 네트워크 정합을 수행하는 방법론을 제안한다. 네트워크의 링크에 의해 둘러싸인 공간으로부터 폴리곤 객체를 생성하고 중첩기반 그래프 군집화 기법을 적용하여 이들 폴리곤 객체들의 대응 집합 쌍을 탐색하고, 이로부터 독립적인 정합을 수행하는 하위 네트워크 쌍을 얻었다. 이후 분할된 네트워크 데이터 쌍의 노드 집합에 Iterative Closest Point 알고리즘을 적용하여 기하보정을 수행한 후 하우스도르프 거리를 이용하여 1:N 링크 정합을 수행하였다. 제안된 방법의 효용성을 평가하기 위해 국가교통 DB센터에서 관리하는 KTDB의 네트워크 데이터와 국내 상용 차량 내비게이션 업체의 네트워크 데이터를 대상으로 알고리즘을 적용하고 결과를 평가하였다. 3m에서 18m까지 3m 간격으로 하우스도르프 거리에 임계값을 적용하여 네트워크를 정합한 결과 15m의 임계값에서 F-measure 기준 0.99의 정확도를 얻을 수 있었다.

• 한국유기농업학회지
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• 제21권1호
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• pp.1-18
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• 2013

Animal and crop production systems were integrated on a single farm. This integrated farming system recycled nutrients on the farm. The separation of animal and crop production with the introduction of cheap commercial fertilizers, farms were not used land-applied manure. The on-line manure matching is one of the emerging business in the achievement of recycling and resource recovery. The manure matching actively promotes the reuse and recycling of by-products and manure. This study constructs to manure matching information system to solve the exchange problems between herders and croppers. Manure matching web sites designed. This paper introduces a web-based animal manure matching system. A manure matching service, part of the manure transport, links farmers who produce excess manure with farmers who can use the manure. Farmers registered with the service have requested manure. The manure matching service supports the transport project by linking farmers with excess manure with those farmers who can utilize the manure safely as a nutrient source. The goal of the service is to protect water quality by fostering efficient land application. Benefits to those who use the manure network include reduced disposal costs, lower purchase costs and recycling of manure. The manure matching is based on the principle that 'one persons waste is another person's fertilizer.' It provides a free online matchmaking service for environmentally safe manure recycling management system.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제12권11호
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• pp.5203-5217
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• 2018

In order to increase the capacity and improve the spectrum efficiency of wireless communication systems, this paper proposes a rate-based two-sided many-to-one matching game algorithm for energy-harvesting small cells with non-orthogonal multiple access (NOMA) in heterogeneous cellular networks (HCN). First, we use a heuristic clustering based channel allocation algorithm to assign channels to small cells and manage the interference. Then, aiming at addressing the user access problem, this issue is modeled as a many-to-one matching game with the rate as its utility. Finally, considering externality in the matching game, we propose an algorithm that involves swap-matchings to find the optimal matching and to prove its stability. Simulation results show that this algorithm outperforms the comparing algorithm in efficiency and rate, in addition to improving the spectrum efficiency.

• 한국통신학회논문지
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• 제35권7A호
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• pp.646-653
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• 2010

본 논문은 OFDM(Orthogonal Frequency Division Multiplexing; 직교 주파수 분할 다중)또는 MIMO(Multiple-input Multiple-output; 다중안테나) 시스템과 같이 여러개의 부채널이 존재하는 노드들로 구성된 다중 홉 중계 네트워크에서, 부채널할당 및 전력할당의 동시 최적화를 위한 통합적 접근방법을 제시한다. 다수의 부채널이 존재하는 경우 중계기는 전력할당외에도 첫 번째 홉과 두 번째 홉간의 부채널 matching을 통해 성능을 최적화 할 수 있게 된다. 그러나 두 홉간의 부채널 matching문제는 복잡한 조합론적 문제이므로 부채널할당과 전력할당의 동시 최적화 문제는 일반적으로 그 최적해를 구하기가 아주 어려운 문제로 알려져 있다. 하지만 본 논문에서는 재배열 부등식을 이용하여 복잡한 동시최적화 문제가 많은 경우 효율적으로 풀릴 수 있음을 보이고 다양한 예제롤 통해 제안된 접근법이 아주 유용함을 보인다.

• 한국전자파학회논문지
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• 제9권3호
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• pp.305-316
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• 1998

마이크로스트립 안테나의 대역폭을 확장하는 기법으로 SRFT에 의한 임피던스 정합회로를 제안한다. 이 기법의 유용성은 주파수가 안테나의 입력임피던스의 공진특성에는 영향을 주고, 방사패턴과 이득 특성에는 별로 영향을 주지 않는다는 것에 기초한다. 이 기법의 특정은 안테나와 전원에 대한 이론적인 기술을 할 필요가 없고 요구되는 주파수대에서 전원과 부하의 데이터를 직접 이용한다. 또한 사전에 정합회로의 topology를 구하기 위한 전달함수의 이론적 형태가 필요없다. 본 연구에서는 구형 마이크로스트립 안테나의 해석에 전송선로 모델올 이용하고, Fano의 대역폭 확장이론올 기초로하여 원하는 주파수대에서 일정한 이득을 갖는 마이크로스트립 안테나의 정합회로를 설계하는데 SRFT 를 도입하여 구조가 다른 두 개의 마이크로스트립 안테나를 제작하여 실험하였다. 그 결과, 제안된 임피던스 정합회로를 갖는 마이크로스트립 안테나는 정합회로가없는 안테나보다 약 3배의 대역폭이 확장됨을 확인하였다.

• Journal of Multimedia Information System
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• 제3권4호
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• pp.155-160
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• 2016

The Pulse Coupled Neural Network (PCNN) is a kind of neural network models that consists of spiking neurons and local connections. The PCNN was originally proposed as a model that can reproduce the synchronous phenomena of the neurons in the cat visual cortex. Recently, the PCNN has been applied to the various image processing applications, e.g., image segmentation, edge detection, pattern recognition, and so on. The method for the image matching using the PCNN had been proposed as one of the valuable applications of the PCNN. In this method, the Genetic Algorithm is applied to the PCNN parameter learning for the image matching. In this study, we propose the method of the similar image rating using the PCNN. In our method, the Genetic Algorithm based method is applied to the parameter learning of the PCNN. We show the performance of our method by simulations. From the simulation results, we evaluate the efficiency and the general versatility of our parameter learning method.