• Proceedings of the IEEK Conference
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• 2007.07a
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• pp.419-420
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• 2007

In this method, we extract peak periods using energy contents of each segment of music. This feature extraction method is equally applied on both the training and query music. Similarity matching algorithm is applied on the extracted feature values for identifying the query music from the database. The retrieval accuracy of 95% of our method is a pretty good result.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2004.11a
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• pp.107-107
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• 2004

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2004.11a
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• pp.479-479
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• 2004

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.9 no.1
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• pp.68-86
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• 2015

Future wireless network aims to integrate different radio access networks (RANs) to provide a seamless access and service continuity. In this paper, a new resource denotation method is proposed in the WLAN and LTE heterogeneous networks based on a concept of spectral bandwidth mapping. This method simplifies the denotation of system resources and makes it possible to calculate system residual capacity, upon which an economic model-based network selection algorithm is designed in both under-loaded and over-loaded scenarios in the heterogeneous networks. The simulation results show that this algorithm achieves better performance than the utility function-based access selection (UFAS) method proposed in [12] in increasing system capacity and system revenue, achieving load balancing and reducing the new call blocking probability in the heterogeneous networks.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.32 no.6B
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• pp.316-324
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• 2007

In this paper we proposed an energy consumption model for IR-UWB wireless sensor networks. The model takes the advantages of PHY-MAC cross layer design, and we used slotted and un-slotted sleeping protocols to compare the energy consumption. We addressed different system design issues that are responsible to energy consumption and proposed an optimum model for the system design. We expect the slotted sleeping will consume less energy for bursty load than that of the un-slotted one. But if we consider latency, the un-slotted sleeping model performs better than the slotted sleeping case.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.1031-1032
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• 2023

급속한 디지털 기술 발전에 따른 비대면 서비스의 증가로 고령층의 정보 접근성 문제가 대두되었다. 본 연구는 고령층의 편리한 키오스크 사용을 위해 AI 기술과 사용자 인터페이스를 결합한 '시니어 키오스크'를 제안한다. '시니어 키오스크'는 딥러닝 기술을 이용한 연령대 인식을 바탕으로 고령층을 분류하고 고령층 소비자에게 직관적이고 가독성 높은 시니어 UI를 제공한다. 또한, 자연어처리 기술을 활용한 음성 주문을 통해 편리한 주문을 돕는다. 본 연구에서 제안된 '시니어 키오스크'를 통해 고령층의 편리성 증진과 정보격차 해소를 달성할 수 있다.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2004.07a
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• pp.57-57
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• 2004

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2004.07a
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• pp.408-408
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• 2004

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2004.11a
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• pp.66-66
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• 2004

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2004.11a
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• pp.340-340
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• 2004