유무선 통신망의 보안을 위한 대칭형 블록 알고리즘에 관한 연구

박형근 남서울대학교 2007 남서울대학교 논문집 Vol.13 No.4

New symmetric algorithm is suitable network environment and wire/wireless communication network, on implement easy, security rate preservation, scalable & reconfigurable. Though proposed algorithm strengthens security vulnerability of TCP/IP protocol and keep security about many user as that have authentication function in network environment, there is important purpose. So that new symmetric cryptographic algorithm implemented by hardware base cryptosystem and en/decryption is achieved at the same time, composed architecture. Key Words : symmetric block algorithm, cryptosystem, network security

AWGN 채널 환경에서 BER 성능 향상을 위한 블록 인터리버에 관한 연구

박형근 남서울대학교 2007 남서울대학교 논문집 Vol.13 No.3

ABSTRACT : It is well known the fact that the BER performance improves throughthe iterative decoding and the interleaving in an AWGN channelenvironment. However, as the number of iterations and the size ofinterleaver are increased, it is required much decoding delay,computation, and power consumption for an iterative decoding.In this paper, efficient block interleaver is proposed. The computersimulation results showthat it has BER performance improvement of0.2dB compared toconventional block interleaver.

이동통신 시스템을 위한 레이크 수신기의 성능 개선에 관한 연구

박형근 남서울대학교 2007 남서울대학교 논문집 Vol.13 No.3

In this paper, we proposed the new structure of the Rake Fingerusing Walsh Switch, the shared accumulator, and the pipelineFWHT(Fast Walsh Hadamard Transform) algorithmfor reducing thesignal processing complexity resulting fromthe increase of the numberof data correlators. The functionsimulation of the proposed architectureis performed by Synopsys tool and the timing simulation is performedby Compass tool. The number of computational operation in theproposed data correlators is 160 additions and the conventional ones is512 additions when the number of walsh code channels is 4.

선택적 후근절제술의 수술중 근전도 감시방법과 치료효과

김형일,김연희,김완호,김근수,김동찬 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.10

Selective posterior rhizotomy(SPR) has been known to reduce the spasticity as well as to improve the quality of life in patients with intractable spasticity. Twenty patients underwent SPR under intraoperative electrophysiological monitoring(IOM). Fifty-two percent of sacrolumbar rootlet were cut after electrical stimulation. Eighteen patients(90%) with spastic type of cerebral palsy showed marked reduction of spasticity and functional improvement without any complication. The patients who did not respond to SRP had mixed types of spasticity. IOM facilitate the selection of pathological rootlets regardless of anaesthetic level. intensity of electrical stimulation, and individual variability of responses. It is concluded that careful selection of surgical candidates and of pathological rootlets under IOM are important to reduce the spasticity. thereby to obtain a better outcome.

디지털 통신시스템을 위한 효율적인 오류 검출 및 정정 부호화기

박형근 남서울대학교 2006 남서울대학교 논문집 Vol.12 No.-

In this paper, we are designing efficient error correcting encoder with detecting and correcting for channel error in the digital communication system. The designed blocks are reed-solomon encoder, interleaver, randomizer and trellis encoder. The designed encoder circuit is synthesized using MAX-plus Ⅱ synthesis Tool and verifying operation over the logic simulation.

박물관의 기원과 공간구조

김형준,박정근 제주대학교 공과대학 첨단기술연구소 2006 尖端技術硏究所論文集 Vol.17 No.1

This study is to examine the origin of museum and its spatial structure. The purpose is to understand architecture in the modern life as the origin of the modern architecture in the 20th century, and to reveal the authenticity of modern spaces through spaces of museums. Museums are one of the leading architectural themes from the nineteenth century to the present day. Having a vast influence on entire Europe, they are new modern institutional buildings emerging with new modern technologies and culture. This study analysis museums through three viewpoints in the modern institutional buildings which were 'time', 'boundary' and 'perception'. As a result, spatial structure in museums were formed by things, people and space which were related to the three viewpoints. The phenomenon and the process in the spatial structure of museum are related to the modern architecture, and also relations in the space of museum are extended to the city and the architecture in the present day.

병렬기법을 이용한 RICS 프로세서용 고속 레지스터 파일 설계

박형근,김형균,김환용 圓光大學校大學院 1996 論文集 Vol.17 No.-

Modular memory is an essential component of any digital 1C design library. The major application of high speed register file has been as the main memory of large-scale computers, super computer, microcomputer, workstation, so on. So, in this thesis, The designed high speed register file for RISC processor, which is possible to processing concurrent I/O by seperating read/write bitline and word access TR has become one of the key embedded elements for processor VLSI's, because it allows simultaneous access from multiple resource and the parallel operations yield a high system throughput. Benefits include reduced constraints on the client units and simpler register to register programming models. Stable output characteristics was obtained by testing at peripheral circuits of operation and was designed by using 1.2[μm] CMOS design rule.

디지틀 이동통신용 동기추적 시스템의 의사잡음 부호 발생기 설계

박형근,김환용 圓光大學校大學院 1996 論文集 Vol.17 No.-

The study on the implementation of signal processing ASIC is advanced m the parts of the DS/CDMA using the direct sequence method which is better than any other type in the encryption aspect. Therefore, in this thesis, Pseudo Noise Code Generator suitable for the encryption aspect. Therefore, in this thesis, Pseudo Noise Code Generator of Code Tracking Sysytem for Digital Mobile Communication suitable for the DS/CDMA method including the additional characteristics for the spread spectrum signal processing technique, encryption technique which is protect to privacy between users, the decrease effects of the self-interference and transmission power spectral density, is designed to get the improved effects for the conventional (exciting) channel noise by using the Verilog-HDL.

응급의료 헬리콥터를 이용한 환자이송에 대한 고찰

송형곤,김병철,송근정,정연권,신백효 大韓應急醫學會 1998 대한응급의학회지 Vol.9 No.4

Background: The first EMS helicopter was introduced to Korea in 1996 and from Dec. 1. 1997, it was used for transporting emergent patients. Authors, here upon, report the transporting experiences. Methods: From Dec. 1, 1996 to Dec. 31, 1997, Samsung Medical Center's EMS helicopter was used for air evacuation of critically ill patients. The patients data prospectively analyzed. Result: A total of 65 patients were transported. Male to female ratio was 1.95:1. The mean transport time was 64.1 min(10 - 160 min). Majority of the evacuated patients was surgical patients (General Surgery : 16, Orthopedic surgery : 10, Neurosurgery : 6, Internal medicine : 13, Pediatrics : 3, and others : 3). Twenty-one of the 65 patients transported were admitted to ICU and 31 did not require ICU care. During the air evacuation, one physician and one nurse trained for air evacuation attended the patients. No medical problems or deaths developed during the air evacuation period. Conclusion: The first EMS helicopter was introduced to Korea in 1996. From Dec. 1, 1996 to Dec. 31, 1997, Samsung Medical Center's EMS helicopter was used for air evacuation of critically ill patients. The patients data reported.

아급성기 대량 재해 지역에서의 의료 지원 : '99 대만 지진 의료 지원을 중심으로

송형곤,강보승,송근정,정연권 대한응급의학회 2000 대한응급의학회지 Vol.11 No.3

Background: There was a powerful earthquaken(Richter Scale 7.6) In Tiawan, on Sep.21, 1999. We supported the organized medic긴 services in that area during 5 days. Methods: We made the protocol and analyzed the results prospectively. Results: We took care of a total of 708 patients from sep. 23 to sep. 27. Traumatized patients related to the earthquake were 245(34.6%), and most of them had minor injuries. Two hundred thirty-nine(239, 33.8%) patients visited us for medical disease related to living in a group. There were 29(4.1%) patients who complained of neuropsychiatric problems due to the post-earthquaken stress. Because the condition of the patients was so bad, 18(2.5%) were transferred to receive more medical services. Conclusion: In disaster area, organized medical services have two different roles, especially in the subacute stage. One is responsibility for real emergency medical care, and the other is medical care of non-emergency patients.