조선전기의 정치적ㆍ종교적 질병관, 醫ㆍ藥의 개념‧범주, 그리고 치유방식

정다함(Daham Chong) 한국사연구회 2009 한국사연구 Vol.146 No.-

This study is to rebut the existing Korean historiography's evolutionary and nationalistic perspectives on medical knowledge of 15th century which has tried to highlight sprouts of empirical medical science among a lot of dimensions of traditional medical knowledge of that period, and to restore rather very political and religious medical contexts of 15th century Chos?n society. In traditional East Asia, Political power has legitimize itself by using Political and religious metaphysics which theoretically linked it to heavenly authority and this inevitably motivated political power to study what happened between heaven and earth to perpetuate its power. Political ideology of traditional Confucianism on kingship heavily depended upon Heaven's mandate, and accordingly what happened between heaven and earth such as eclipse, flood, famine, drought were basically explained as "anomalies" or "ominous disaster" which reflected heaven's anger at political failures of a ruler. In order to perpetuate political power, a ruler should know about those "anomalies" and this motivated the studies or knowledge of heaven and earth to be "Moral Meteorology" and "Potent Astrology". So in this context, a disease often was explained in the same way. It was believed, a ruler's political failures of exploiting his people such as wars, heavy taxation, and huge construction, made people hold a grudge(怨恨) in their mind and this was basically the same as heaven's angers according to a traditional thought that heaven's mind is people's mind(天人合一). And it was believed, grudge in people's mind as heaven's anger eventually created evil spirits which caused a disastrous and abnormal disease such as an epidemic. The concepts of a disease of early Chos?n society was based on traditional political and religious ideas. According to this political and religious concept on how people came to be sick, the concepts of doctor and medicine was defined in very flexible and broad boundaries. When it comes to doctor's healing people, criteria was in dealing with the patients's mind spiritually to help them to have peaceful mind back.Healing people with medicine was regarded as a less important issue than spiritual healing and using food. This allowed various religious healers to play important roles in dealing with disease. When it comes to medicines, anything that is believed to keep those evil spirits away from people could be defined and used as medicines. For example, the typical medicines used for epidemics was ghost-killing medicines. These medicines were basically Taoist medicine and made of a lot of various materials rather based on religious beliefs on exorcism than clinical pharmacology. The way people used those medicine were not limited in orally taking, but varied in keeping them in their bodies, hanging in a ceiling, putting on a wall, and burning them into the air. And according to this medical context based on traditionally political and religious metaphysics and its practice in dealing with diseas the way the political power responded to an epidemic inevitably focused more on practicing state-level religious rituals for people. Modern perspectives of Korean Historiography based on evolutionary and nationalistic bias obsessed withwestern modernity, has viewed these issues as "superstitious practice" or "non-scientific knowledge" or "traditional backwardness". However, in their own terms and contexts, all these political and religious metaphysics, concepts of disease and medicine, and medical practices, were to perfectly make sense to people who lived in 15th century early Chos?n dynasty.

나머지 옵셋이 부호획득 시스템에 미치는 영향을 줄이기 위한 듀얼셀 결합 검파 알고리즘

정다해(Dahae Chong),이영윤(Youngyoon Lee),윤태웅(Taeung Yoon),이영포(Youngpo Lee),이명수(Myungsoo Lee),윤석호(Seokho Yoon) 한국통신학회 2009 한국통신학회논문지 Vol.34 No.7C

본 논문에서는 나머지 주파수 옵셋이 (residual frequency offset: RFO) 존재하는 대역 확산 시스템의 부호 획득을 위해 듀얼셀 결합 (dual-cell combining: DCC) 검파 기법을 제안한다. RFO가 존재할 때, 부호 획득 과정 동안 검파에 사용되는 상관 첨두는 작은 진폭을 갖는 두 개의 주변 첨두로 나눠지게 되며, 이로 인해 부호 획득 성능이 하락하게 된다. DCC 검파 기법은 두 개의 연속된 상관값을 결합하여 결정 변수로 사용함으로써 RFO가 상관 첨두에 미치는 영향을 완화시킬 수 있다. 또한, 성능 평가를 통해 DCC 검파 기법이 한 개의 상관값을 결정변수로 사용하는 이제까지의 검파 기법에 비해 더 나은 평균 동기화 시간 성능을 갖는 것을 확인할 수 있다. In this paper, we propose a new detection method called dual-cell combining (DCC) detection for the acquisition in time of spread spectrum codes in the presence of residual frequency offset (RFO). When the RFO exists, the correlation peak used for detection during the acquisition process is split into two neighboring peaks with smaller amplitudes, resulting in considerable degradation in the overall acquisition performance of conventional methods. In the DCC detection method, the decision variable for detection is formed by combining two consecutive correlator outputs so that the influence of the reduction in the correlation peak due to the RFO can be alleviated. Numerical results show that the DCC detection method can offer better mean-time-to-synchronization performance than the conventional method based on the cell-by-cell detection.

세종 성군 논란을 통해 본 뉴라이트 역사인식의 확산과 한국사 연구의 ‘탈식민’ 문제

정다함(Daham Chong) 역사비평사 2021 역사비평 Vol.- No.135

朝鮮 太祖代 遼東 공격 시도에 대한 史學史와 그에 대한 탈경계적 분석과 비판

정다함(Chong, Da-Ham) 한국사연구회 2017 한국사연구 Vol.- No.178

최만리 등의 諺文 반대 상소와 세종의 訓民正音 제정의 역사적 맥락에 대한 재해석

정다함(Daham Chong) 고려사학회 2023 한국사학보 Vol.- No.90

조선 태종 10년 女眞에 대한 “북정(北征)”의 역사적 맥락과 그 여파

정다함 ( Chong Daham ) 고려대학교 민족문화연구원 2023 민족문화연구 Vol.98 No.-

Going beyond the nationalist narrative of post-1945 South Korean historiography which has only essentialized Chosŏn's position in the relations with its neighbours as an innocent victim based on “hereditary victimhood”, this paper seeks to revisit and rethink Chosŏn’s First Zengfa(征伐) against Jurchen tribes in Tumen river regions in 1410. By taking a closer look at what King T'ajong has gone through in domestic politics and in his response to Ming’s attempt to subjugate those major Jurchen chieftains of Tumen river regions who have served his father King T'aejo since late Koryŏ before the war, this paper will first explain the dubious motivation of King T'aejong to take this drastic military action against those Jurchen chieftains. Then, secondly, this paper will delve into the details of the process of this war, tries to explain how this war ended up slaughtering many Jurchen chieftains who didn't seem to be involved with the Jurchen raid on northen border town Kyŏngwŏn which triggered King T'aejong to proceed Zengfa(征伐). Finally, going beyond the existing frameworks which have only substantialized this military action of Chosŏn as a righteous self-defense, this paper will take a closer look at the apocalyptic consequences this war has caused around the frontier societies of Chosŏn and Jurchen in Tumen river regions and talk about what the people of both frontier societies had to suffered from this genocidal warfare.

UWB 동기화를 위한 새로운 결정 법칙들

정다해(Dahae Chong),이영윤(Youngyoon Lee),안상호(Sangho Ahn),이의형(Euihyoung Lee),유승환(Seung Hwan Yoo),윤석호(Seokho Yoon) 한국통신학회 2008 한국통신학회논문지 Vol.33 No.2C

Ultra-wideband (UWB) 시스템의 동기화에 대한 이제까지의 연구에서는 참조 신호와 다중경로 성분들 중 어느한 성분과의 위상을 맞추는 것을 동기화라 정의하고 빠르게 동기화하는 기법에 대하여 연구하였다. 그러나 다중경로 성분들은 서로 다른 전력을 갖기 때문에, 동기화 이후 과정들에서, 낮은 전력을 갖는 다중경로 성분에서 동기화가 될 경우에는 좋지 않은 성능을 가지며, 높은 전력을 갖는 다중경로 성분에서 동기화할 경우에는 좋은 성능을 갖는다. 일반적으로 첫 번째 다중경로 성분이 가장 큰 전력을 가지며, 따라서 첫 번째 다중경로 성분에서 동기화함으로서 동기화 이후 과정들의 성능을 향상시킬 수 있다. 본 논문에서는 첫 번째 다중경로 성분과 참조 신호의 위상이 맞았을 때를 동기화라 새롭게 정의하고, 최대 우도 (maximum-likelihood: ML) 방법을 이용하여 UWB 다중경로 채널에서 첫 번째 다중경로 성분을 찾기 위한 최적 결정 법칙을 유도하였으며, 동시에 이에 바탕을 둔준 최적 결정 법칙을 제안하였다. 모의실험을 통해, 새로운 동기화의 정의에 따라 동기화하였을 때, 그렇지 않을 때보다 좋은 복조 성능을 갖는 것을 확인할 수 있었으며, 본 논문에서 제안된 최적 및 준 최적 결정 법칙은 기존결정 법칙과 비교할 때 월등한 성능을 갖는 것을 확인할 수 있었다. In ultra-wideband (UWB) systems, conventionally, the synchronization is to align time phases of a locally generated template and any of multipath components to within an allowable range. However, the synchronization with a low-power multipath component could incur significant performance degradation in receiver operation (e.g., detection) after the synchronization. On the other hand, the synchronization with a high-power multipath component can improve the performance in receiver operation after the synchronization. Generally, the first one among multipath components has the largest power. Thus, the synchronization with the first path component can make better performance than that with low-power component in receiver operation after the synchronization, Based on which, we first propose an optimal decision rule based on a maximum likelihood (ML) approach, and then, develope a simpler suboptimal decision rule for selecting the first path component. Simulation results show that the system has good demodulation performance, which uses new synchronization definition and the proposed decision rules have better performance than that of the conventional decision rule in UWB multipath channels. between macroblocks in the previous and the current frame. On video samples with high motion and scene change cases, experimental results show that (1) the proposed algorithm adapts the encoded bitstream to limited channel capacity, while existing algorithms abruptly excess the limit bit rate; (2) the proposed algorithm improves picture quality with 0.4~0.9㏈ in average.

“뿌리 깊은 나무”와 “샘이 깊은 물”이라는 계보

정다함(Chong, Da-Ham) 고려사학회 2017 한국사학보 Vol.- No.69

CDMA 시스템에서 부호 획득을 위한 위상 변이 네트워크 기반의 차동 순차 추정 기법

정다해(Dahae Chong),이병윤(Byeongyun Lee),김상훈(Sanghun Kim),정영빈(Young-Bin Joung),송익호(Iickho Song),윤석호(Seokho Yoon) 한국통신학회 2007 한국통신학회논문지 Vol.32 No.3A

본 논문에서는 부호 분할 다중 접속 (code division multiple access: CDMA) 시스템에서 의사 잡음 부호 및 반전된 의사 잡음 부호의 획득이 가능하고 데이터 복조도 가능한 위상 변이 네트워크 기반의 차동 순차 추정 기법을 제안하였다. 모의실험을 통해 제안한 기법의 성능이 이제까지의 이중 상관 순차 추정 기법에 비해 낮은 복잡도를 가지면서도 동일한 성능을 지니고 있음을 보였다. In this paper, a novel pseudo noise (PN) code acquisition scheme called the phase-shift-network-based differential sequential estimation (PDSE) is proposed, in the presence of data modulation in code division multiple access (CDMA) systems. The PDSE has even less complexity compared with that of the dual correlating sequential estimation (DCSE), and the reduction in complexity becomes more significant as the period of PN code increases. Numerical results demonstrate that the PDSE performs equivalently to the DCSE with less complexity.

UWB 신호 획득에 알맞은 여러 상관기 출력값 결합 기반의 2단계 검파 기법

정다해(Dahae Chong),이영포(Youngpo Lee),강승구(Seung Goo Kang),윤석호(Seokho Yoon) 한국통신학회 2010 한국통신학회논문지 Vol.35 No.4C