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이상헌,Lee, Sang-Heon 대한건축사협회 2000 건축사 Vol.2000 No.4
본지에서는 지난 2000년 1월호에 '21세기 한국건축의 비전'이란 주제로 기획특집을 마련, 교육관련 부문을 이상헌(건국대 건축대학원)교수에게 집필 의뢰하여 '건축교육개혁방안 ; 학부 5년제 문제 있다'는 내용의 원고를 게재하였고, 이후 이교수의 글과 관련하여 김광현(서울대 건축학과)교수는 학부 5년제의 취지를 이해하지 못한데서 비롯됐다며, 이교수의 글에 대한 반론을 제기하여 '학부 5년제 문제있다는 주장의 문제'의 글을 기고하여 본지 2월호에 게재한 바 있다. 이에 대해 이상헌교수는 '학부 5년제 문제있다는 주장의 문제'에 대해 반론을 제기한 김광현교수의 글은 필자의 글에 대한 의도나 생각을 근본적으로 오해한 데서 비롯된 것으로서 이에 대한 보다 정확한 필자의 생각을 피력하기 위해 '대학원 중심의 4+2년제를 주장하는 이유'에 대한 글을 3월호에 게재코자 기고하였다. 그러나 지면관계상 3월호에 게재하지 못하고, 이번호의 '기고'지면을 통해 게재코자 하며, 아울러 지난 1,2월호 본지를 통해 게재된 건축교육 관련내용에 대한 필자의 글과 본란의 글은 우리 협회의 의견과 일치하지 않을 수도 있음을 밝힌다.
효율적인 다중 채널 On-Chip-Bus를 위한 SoC Network Architecture
이상헌,이찬호,이혁재,Lee Sanghun,Lee Chanho,Lee Hyuk-Jae 대한전자공학회 2005 電子工學會論文誌-SD (Semiconductor and devices) Vol.42 No.2
공정기술과 EDA 툴의 발전에 따라서 하나의 실리콘 다이(Die)에 많은 IP가 집적되고 멀티프로세서가 포함되는 SoC 구조가 가능해지고 있다 그러나 대부분의 기존 SoC 버스는 공유버스 구조라는 문제점으로 인해 통신의 병목현상이 발생하고 이는 전체 시스템 성능을 저하시키는 요인이 된다. 많은 경우에 멀티프로세서 시스템의 성능은 CPU 자체의 속도보다는 효율적인 통신과 균형있는 연산의 분배가 좌우하게 된다 따라서 충분한 SoC 버스 대역폭(Bandwidth)을 확보하기 위한 하나의 해결책으로 크로스바 라우터(Crossbar Router)를 이용하여 효율적인 온 칩 버스구조인 SoC Network Architecture(SNA)를 제안한다. 제안된 SNA구조는 다중 마스터(multi-master)에 대해 다중 채널(multi-channel)을 제공하여 통신의 병목현상을 크게 줄일 수 있으며 뛰어난 확장성을 지원한다. 제안된 구조에 따라 모델 시스템을 설계하고 시뮬레이션을 진행한 결과 AMBA AHB 버스에 비해 평균 $40\%$ 이상 효율이 증가했다. We can integrate more IP blocks on a silicon die as the development of fabrication technologies and EDA tools. Consequently, we can design complicated SoC architecture including multi-processors. However, most of existing SoC buses have bottleneck in on-chip communication because of shared bus architectures, which result in the performance degradation of systems. In most cases, the performance of a multi-processor system is determined by efficient on-chip communication and the well-balanced distribution of computation rather than the performance of the processors. We propose an efficient SoC Network Architecture(SNA) using crossbar routers which provide a solution to ensure enough communication bandwidth. The SNA can significantly reduce the bottleneck of on-chip communication by providing multi-channels for multi-masters. According to the proposed architecture, we design a model system for the SNA. The proposed architecture has a better efficiency by $40\%$ than the AMBA AHB according to a simulation result.

이상헌,박건태,손영국,Lee, Sang-Heon,Park, Geon-Tae,Son, Yeong-Guk 한국재료학회 2002 한국재료학회지 Vol.12 No.4
Tin oxide thin films doped with silicon as anodes for lithium secondary battery were fabricated by R.F. magnetron sputtering technique. The electrochemical results showed that the irreversible capacity was reduced during the first discharge/charge cycle, because the audition of silicon decreased the oxidic state of Tin. Capacity was increased with the increase of substrate temperature, however decreased with the increase of RTA temperatures. The reversible capacity of thin films fabricated under the substrate temperature of $300^{\circ}C$ and the Ar:$O_2$ratio of 7:3 was 700mA/g.
저나트륨혈증성 탈수증으로 진단된 소아 부신백질이영양증 1례
이상헌,김형진,권영세,김순기,이지은,Lee, Sang Heon,Kim, HyungJin,Kwon, Young-Se,Kim, Soon-Ki,Lee, Ji-Eun 대한유전성대사질환학회 2014 대한유전성대사질환학회지 Vol.14 No.1
X-linked adrenoleukodystrophy (ALD) is a uncommon metabolic disorder which derived by peroxismal ${\beta}$-oxidation and elevation of serum very long chain fatty acid (VLCFA). VLCFA is mainly accumulated in the myelin of the central nervous system and adrenal cortex, by which the expressed symptoms of this disease are mainly neurologic and endocrinologic (such as adrenal insufficiency). The mutations in the ABCD1 gene causes X-linked ALD, nevertheless its phenotypes and genotypes are poorly coordinated. We report the case of a 12-year-old boy with X-linked ALD who developed vomiting, fatigue and poor oral intake. Severe dehydration and hyponatremia were found in initial physical examination and laboratory test, but his motor/sensory nerve function and mental status were completely normal. We diagnosed ALD with diffuse high-intensity signal in both parietotemporal cerebellar white matter in brain MRI and elevated serum VLCFA. Later, we confirmed a novel c.1635-1G>A (IVS6-1G>A) mutations of the ABCD1 gene. With the discrepancy between its phenotypes and genotypes, various phenotypes could be seen in X-ALD patient. Careful examination and further studies for these patients will be needed.
석조문화재의 암석에 관한 지질학적 조사 연구 (I)-원주시, 원주군, 횡성군 및 홍천군 지역을 중심으로
이상헌,Lee, Sang-Hun 국립문화재연구소 1992 保存科學硏究 Vol.13 No.-
The investigation has been made on the rocks consisting the pagoda(12), Buddhist Statues(9) Buldaejwa and cakra(2, rewpectively), stele(5), and Flagpole wupport and stupa(6) which are stood in Weonju city, Weonju-gun, Hwoengseong-gun and Hongcheon-gun, Kangweondo. These rock-monuments range mostly in age from late Shilla Kingdom to middle Korye Kingdom. The geology around this region is mainly composed of Precambrian metamorphic rocks and mesozoic granitic rocks. The granitic rocks are largely divided into Jurassic and cretaceous ones which are slightly different in rock phase. The main rock phase consisting the monumentsare are coarse biotite granite with minor amount of hornblende in Jurassic age. Variation in rock phase is abserved even in part of the stone used in the monuments. Inclusions composed of biotite and hornblende, porphyritic texture with microcline phenocryst, igneous lineation and exfoliation according to weathering are observable in all rocks in these monuments. In the case of stele whose a body and a capstone is remained, one is composed of black slate and the other white limestone. But the turtle shaped pedestal is constituted of coarse biotite granite. These stone-monuments are strongly weathered and exfoliated out about 1∼2mm.In case of exfoliated weathering along igneous lineation, some are taken off about 3∼5mm thick. In some monuments, the degree of weathering is somewhat different according to position, grade of sculpture, and biological activity.
이상헌,Lee, Sang-Heon 한국분말야금학회 2006 한국분말재료학회지 (KPMI) Vol.13 No.6
An electromagnetic properties in BiSrCaCuO superconductor were studied. In the measurement of current-voltage properties, the voltage was measured when applying an external magnetic field. The voltage continues to appear after the removal of the magnetic field. This phenomenon was considered as a nonvolatile magnetic effect. The voltage increased with the applied magnetic flux, but it became constant at about $10^{-2}$T. The appearance of the voltage was ascribed to the trapping of magnetic flux.