증발법으로 합성된 신규 가돌리늄 금속-유기골격체의 단결정 구조 분석 및 자성학적 특성 연구

송정화,Song, Jeong Hwa 한국결정성장학회 2022 한국결정성장학회지 Vol.32 No.5

유연한 구조의 p-XBP4 리간드를 활용하여 새로운 3차원 구조의 Gd-MOF를 합성하고 단결정 회절 분석기를 활용하여 정확한 구조를 분석하였다. 중심 금속인 Gd는 6개의 p-XBP4와 1개의 물 분자에 의해 총 7배위 되어 있으며, W(CN)₈는 배위되지 않고 전하 균형을 맞추기 위해 구조체 내에 위치하고 있다. 중심 금속인 Gd는 배위된 p-XBP4에 의해 이웃한 Gd와 연결되어 3차원의 입체구조를 형성한다. 란탄 금속의 특성을 고려하여 직류 자화율 측정을 활용하여 자성 특성에 대한 연구를 진행하였다.

SCTP의 멀티호밍 특성에 대한 성능 평가

송정화,이미정,고석주,Song, Jeong-Hwa,Lee, Mee-Jeong,Koh, Seok-Joo 한국정보처리학회 2004 정보처리학회논문지 C : 정보통신,정보보안 Vol.11 No.2

SCTP는 TCP와 마찬가지로 연결 지향적이며 신뢰성 있는 데이터의 전송을 위한 전송 계층 프로토콜이다. SCTP는 오류 및 플로우 제어 등 많은 부분에 있어서 TCP의 방식을 그대로 따르며, 거기에 더하여 멀티스트리밍과 멀티호밍 특성을 가진다. 이 논문에서는 TCP와 다른 대표적인 특징들 중 멀티호밍이 성능에 미치는 영향을 살펴보았다. 먼저 멀티호밍을 지원하는 SCTP와 그렇지 않은 경우의 SCTP나 TCP Reno, TCP SACK의 성능을 시뮬레이션을 통해 비교하였다 또한, 멀티호밍을 지원하는 경우에 SCTP의 재전송 정책이 성능에 미치는 영향을 살펴보았다. 프로토콜간의 성능 비교를 통해서는 SCTP가 사용하는 몇 가지 혼잡제어 메커니즘 특징으로 인해 SCTP가 TCP Reno나 TCP SACK에 비해 향상된 성능을 보임을 확인할 수 있었으며, 특히 멀티호밍을 지원하는 경우의 SCTP가 가장 짧은 지연을 가짐을 확인하였다. 또한, 멀티호밍을 지원하는 경우 현재의 SCTP의 재전송 정책이 프라이머리 경로와 대체 경로간의 경로 특성의 따라 성능 저하를 가져올 수 있는 잠재적인 문제점을 가짐을 확인하였다. 따라서 재전송을 위한 경로 선택에 있어서 대체 경로의 상태 파악이 중요한 요소이며 이를 위한 방안이 필요할 것이다. Stream Control Transmission Protocol(SCTP) is a new connection-oriented, reliable delivery transport protocol operating on top of an unreliable connectionless packet service such as IP. It inherits many of the functions developed for TCP, including flow control and packet loss recovery functions. In addition, it also supports transport layer multihoming and multistreaming In this paper, we study the impact of multi-homing on the performance of SCTP. We first compare performance of single-homed SCTP. multi-homed SCTP, TCP Reno and TCP SACK. We, then describe potential flaw in the current SCTP retransmission policy, when SCTP host is multihomed. Our Results show that SCTP performs better than TCP Reno and TCP SACK due to several changes from TCP in its congestion control mechanism. In particular. multi-homed SCTP shows the best result among the compared schemes. Through experimentation for multi-homed SCTP, we found that the current SCTP retransmission policy nay deteriorate the perfomance when the retransmission path it worse than the original path. Therefore, the condition of retransmission path is a very important factor In SCTP performance and a proper mechanism would be required to measure the condition of the retransmission path.

고품질 배 와인 제조를 위한 최적 발효 조건과 품질특성

송정화,천종필,나광출,문제학,김월수,이종수,Song, Jung-Hwa,Chun, Jong-Pil,Na, Kwang-Chul,Moon, Jae-Hak,Kim, Wal-Soo,Lee, Jong-Soo 한국미생물·생명공학회 2009 한국미생물·생명공학회지 Vol.24 No.3

The goal of this study was to develop new functional pear wine using six Asian pears (Pyrus pyrifolia, Nakai), namely Wonhwang, Niitaka, Whangkeumbae, Whasan, Gamcheonbae and Chuwhangbae. To select optimal yeast and pear, we investigated the physicochemical properties of the pear wines from fermentation of musts of six pear cultivars at $25^{\circ}C$ for 7 days by several yeasts. $11.2%{\sim}12.4%$ of ethanol from musts of 'Wonhwang', 'Whangkeumbae' and 'Whasan' were produced by Saccharomyces cerevisiae K-7 and 12.8% of ethanol was also produced from 'Niitaka' by commercial Saccharomyces cerevisiae C-2. 9.9% and 11.4% of ethanol were produced from musts of 'Gamcheonbae' and 'Chuwhangbae' by Saccharomyces cerevisiae KCTC 7904, respectively. Among several pear wines, Niitaka pear wine showed the best acceptability in the sensory evaluation, and Niitaka pear wine and Whangkeumbae pear wine showed 31.1% and 27.8% of antihypertensive angiotensin I-converting enzyme(ACE) inhibitory activity, respectively. However, the other functionalities were not detected or very low. Furthermore, Niitaka-strawberry mixed fermentation wine was showed the excellent acceptability and high antihypertensive ACE inhibitory activity of 64.9%.

논문(論文) : ≪서유기(西游記)≫의 인삼과(人參果) 고사(故事)의 형성과정에 대한 종교, 문화적인 탐구

송정화 ( Jung Hwa Song ) 중국어문연구회 2016 中國語文論叢 Vol.0 No.73

This study examined the process and meaning of the anecdote of Ginseng Fruit(人參果) which is seen in Journey to The West(≪西游記≫) from religious and cultural perspective. A Ginseng Fruit is an imaginary fruit that gives eternal life once taken. But, it was not appeared in old versions before Journey to the West. The only exception is the appearance of child shaped peach in Datangsanzangqujingshihua(≪大唐三藏取經詩話≫) of the Song dynasty, which is the subtype of Journey to The West. A story on child shaped peach in Datangsazangqujingshihua seems to be delivered from Arabia in the active exchange with Western regions. Such assumption is made possible because it contains a story of a child tree of Dashi country(大食國), which is Arabia, in Shuyiji(≪述異記≫) written in the Tang or Song dynasty. And a story of child shaped fruit was fixed as Ginseng Fruit in Journey to The West at the Ming dynasty. It is closely related to the unique awareness on children and fanatic belief on eternal life of the Ming dynasty.

명대 동물 조공의 문학적 재현과 의미에 대한 탐구 ― 사자부 와 서응기린송 을 중심으로

송정화 ( Song Junghwa ) 한국중국학회 2023 중국학보 Vol.103 No.-

본 논문에서는 조공이 체계화되고 본격적으로 가동되기 시작했던 明代를 중심으로 당시 동물 朝貢이 문학적으로 수용되면서 賦와 頌이 집중적으로 창작되었던 현상을 주목하고, 작품 속에 華夷觀적인 세계관이 어떻게 구현되었고, 계층 간의 위계질서는 어떻게 형성되었는지를 분석하였다. 또한 명초의 詩賦류 작품들에서 異域의 사자와 기린이 吉兆로 해석될 수 있었던 원인을 당시 사대부 지식인 계층의 지식에 대한 권력과 관련하여 그 의미를 살펴보았다. 본 논문에서는 우선 당시에 동물을 주제로 한 작품이 다수 나올 수 있었던 배경으로, 홍무제부터 영락제에 이르는 명초의 상황이 漢族 중심의 제국을 건설해가는 과정이었음에 주목하였다. 華夷觀의 시각을 바탕으로 中華를 중심으로 한 세계관을 구현하기 위해, 영락제는 조공 시스템을 견고하게 구축하고자 했고, 그 과정에서 이역의 동물들이 명으로 유입되었다. 또한 필자는 영락제의 왕위 찬탈의 이력과 역사적인 정통성에 대한 갈망이 당시 사대부 관료들로 하여금 주군과 제국을 찬양하는 작품을 창작하도록 이끌었고, 그 과정에서 동물 조공이 ‘賦’라는 제도적인 문학 장르와 만나면서 「獅子賦」와 「瑞應麒麟頌」의 創作熱을 일으켰음을 분석하였다. 다음으로 필자가 주목한 것은 명대의 사대부 관료들이 왜 長頸鹿(지금의 기린)을 상상 속의 기린과 동일시하여 실제 조공된 형태와 다른 이미지로 묘사했는가 하는 점이었다. 여기에는 두 가지 원인을 찾을 수 있었는데, 첫째로 장경록을 중국의 상상 속 瑞獸인 기린과 동일시하여 나라와 주군을 歌功頌德하기 위함이었다. 둘째, 당시 사대부 계층은 단지 이역의 신비한 동물인 장경록을 가공송덕의 목적으로만 이용한 것이 아니라, 장경록을 ‘기린’이라는 상서로운 징조로 파악하는 것 자체에 중요한 의미를 두었다. 그들은 새로운 해석 체계를 만들어 그것을 ‘부’로써 담아냈고 사회적으로 공유했으며, 궁극적으로 지식의 패러다임을 장악하는 고유한 권력을 확보하고자 했다. 기존의 賦에 대한 학계의 인식은 지배계층의 요구를 충실히 반영하고 향락적인 욕망에 부응하며, 현실적인 메시지보다 형식에 치중한 御用문학이라는 것이 일반적이었다. 그러나 본고에서는 명대의 「사자부」와 「서응기린송」을 통해 동물을 주제로 한 詩賦류에는 여러 복합적인 창작의 動人들이 얽혀있고, 기존에 알려진 바와 같이 군주로부터 신료, 백성에 이르는 위계질서에 따른 권력의 흐름만 존재하는 것이 아니라, 詩賦류의 작자였던 사대부 계층의 권력에 대한 욕망 역시 중요한 요인으로 작용하고 있음을 밝혔다. In this paper, I focused on the phenomenon that animal tributes were literary represented and the works of Fu(賦) and Song(頌) were actively created, focusing on the Ming Dynasty, when tributes began to be systematized. And I analyzed how the worldview of Chineseism was embodied in the work and how the hierarchy between classes was formed. In addition, the reason why foreign lion and giraffe could be interpreted as symbols of auspiciousness in the works of ‘Fu’ in the early Ming Dynasty was examined in relation to the power of the ‘knowledge’ of the noble class. In this paper, I first investigated the background of many animal-themed works at the time, and noted that the early Ming Dynasty situation from Emperor Hongwu(洪武帝) to Emperor Yongle(永樂帝) was the process of building an empire centered on the Han people(漢族). In order to realize the worldview centered on the Ming Dynasty, Emperor Yongle established a tribute system, and in the process, foreign animals were introduced to Ming. And I analyzed that Emperor Yongle's history of the usurpation of the throne and the desire for historical legitimacy led the aristocrats to create works praising the emperor and empire, and in the process, animal tributes met with the institutional literary genre ‘Fu’, causing explosive creation of “Shizifu” and “Ruiyingqilinsong”. The next thing I noticed was why the aristocrats of the Ming Dynasty identified giraffe with an imaginary qilin(麒麟) and described it as an image different from the actual form of a tribute animal. There were two reasons for this: first, giraffe was identified with China's imaginary auspicious animal, the qilin, to praise the country and its lord. Second, the noble class at the time did not use giraffe, a mysterious animal in this area, for praise purposes only, but also put important meaning on identifying it as an auspicious sign of qilin. They created a new system of interpretation, expressed it as a Fu and shared it socially, and ultimately sought to secure intellectual power to dominate the paradigm of knowledge. The general perception of the Fu was that it faithfully reflected the needs of the ruling class, responded to hedonic desires, and focused on form rather than realistic messages. However, in this paper, by analyzing the Ming Dynasty's “Shizifu” and “Ruiyingqilinsong”, these works were considered to be intertwined with various complex creative drivers. Therefore, I analyzed that as previously known, not only the flow of power along the hierarchy from the emperor to the noble and the people, but also the desire for power of the noble class, who was the author of the Fu, is also an important factor.

≪서역행정기(西域行程記)≫와 명초(明初)의 서역(西域)

송정화 ( Song Junghwa ) 고려대학교 중국학연구소 2019 中國學論叢 Vol.0 No.64

Xiyuxingchengji is the travel journal of Chen Cheng who visited the West from the 11th to the 12th year of Emperor Yongle of the Ming Dynasty(1413~1414) and presented his journal to the emperor. It records the travel schedule of the delegations for 2 years by date, events, and itinerary. Emperor Hongwu of the Ming Dynasty aimed at driving out the power ofMongolian and building a powerful empire of the Hun. Emperor Yongle dreamed of the world where the foreign invaders of all directions brought tribute to China. Therefore he expanded the national territories and sent Zhenghe to Southeast Asia to announce the power and grace of the Emperor. However Ming could not rule the West. The West was ruled by the Timur Empire with a powerful army and the legacy of Islams. The Timur Empire conquered the entire Central Asia and even India and Europe. Therefore Ming needed to maintain amicable relationships with Timur Empire for its own substantiality. Xiyuxingchengji is the record of Chen Cheng who was the envoy of Ming to travel to the West despite the hardships. This study discussed Xiyuxingchengji to analyze the relations between Ming and the West at that time. Also, Ming at that time did not receive tributes from the West.

유비쿼터스 주택의 거주자 행위 기반 알고리즘 연구

송정화(Song Jeong Hwa),오건수(Oh Kun Soo),최인호(Choi In Ho) 한국지적정보학회 2008 한국지적정보학회지 Vol.10 No.1

본 연구는 인공지능기법 중 규칙기반추론, 사례기반추론, 패턴기반추론 개념을 이용하여 거주자의 행위에 대응하는 서비스를 시스템화함으로써 거주자 행위 기반 유비쿼터스 주택의 알고리즘을 개발하는데 목적이 있다. 이를 위한 기본 틀로 행위와 공간 이동, 서비스 패턴을 조합한 라이프패턴의 개념을 제안하였으며, 각각의 agent별 알고리즘을 통해 거주자에게 필요한 서비스를 적절한 시간과 장소에서 제공할 수 있는 기 본 논리를 제시하였다. The purpose of this study is to develop the algorithm of Ubiquitous House based on the human behavior. The results of this study are as follows : 1) The concept of Life Pattern is proposed. 2) Rule-Based Reasoning, Case-Based Reasoning, and Pattern-Based Reasoning are used to provide customized service. 3) the basic logic of each Agent’s algorithm is suggested.

공간색채이미지의 시지각적 지원성에 관한 연구 -어린이박물관 전시공간을 대상으로-

송정화 ( Jeong-hwa Song ) 중앙대학교 예술문화연구원 2017 예술문화융합연구 Vol.6 No.-

A affordance of visual perception are a visual feature that can trigger an innate behavior in objects and the environment. This shows positive behavior and positive behavior by considering positive behaviors and personality traits, or by avoiding negative behavior and avoiding negative behavior. Recent research trends regarding user centered exhibitions show that surveys of viewing habits and user psychology are linked. The purpose of this study is to review the suitability of the visual images and the positive participation in the exhibition space through a behavior affordance of the visual images. For this study, the children’s museum investigated the duration of the stay in the exhibition hall and analyzed the characteristics of the space, correlation, and characteristics. As a result, the duration of the stay and the spatial color sequence of the zones increases when distinct color discrimination is apparent.

고대 중국의 이역(異域)담론의 시각적 재현 ― <만국직공도(萬國職貢圖)>에 나타난 이역상상

宋貞和 ( Song¸ Junghwa ) 중국어문학회 2021 中國語文學誌 Vol.- No.74

In this paper, I studied how Sinocentrism (中華主義) and Huayi view (華夷觀) were reproduced in the picture text, focusing on< Wanguozhigongtu > which is believed to have been produced during the Ming Dynasty. Chapter 2 discussed the period of establishment with the author of < Wanguozhigongtu >. < Wanguozhigongtu > was originally known to have been painted by Lee Gong-rin (李公麟) of the Song Dynasty, but it is recently argued that it was produced during the Ming Dynasty. This high school comprehensively considered existing academic studies, and estimated the production period as named. In this paper, the period of production of < Wanguozhigongtu > was estimated in the Ming Dynasty by comprehensively examining existing academic studies. Chapter 3 analyzed the characteristics of < Wanguozhigongtu > by comparing the contents of the description section of < Wanguozhigongtu > in the form of a combination of paintings and writings with historical materials. As a result, < Wanguozhigongtu > not only referred to existing historical books, but also described the imaginary translation as a tribute country in accordance with the form of the < Zhigongtu (職貢圖) >. And the background of these results was the active production of paintings such as the prosperity of the tribute trade during the Ming Dynasty, interest in foreign countries, historical literature and < Shanhaijingtu (山海經圖) >. In Chapter 4, the unique way in which < Wanguozhigongtu > composes foreign countries in paintings was divided into two types: formal and comic. < Wanguozhigongtu > had its own way of constructing characters and spaces, and reproduced the Huayi view in the pictu

국제도시 경관지침 분석 및 경관지침에 따른 건축입면색채디자인사례 제안 - 고덕국제도시 중심으로

송정화(Song, JungHwa) 한국색채학회 2020 한국색채학회 논문집 Vol.34 No.3

This project proposes a landscape design guideline of Godoek District based on the thorough review of guidelines for other international cities, such as Chungna, Songdo, and Yeongjong included in Incheon Free Economic Zone(IFEZ). The project was developed in the following steps. Firstly, the landscape project of IFEZ was taken as the reference, in particular, the Cheongna city as it has a similar scale with Godeok. The two cities were comparatively analyzed concerning the landscape structure, composition, contents, and applications. The landscape guidelines for the building facade were then suggested for the Godeok district, where the color design was essential for the architectural elevation. The color landscape guidelines remarkably contribute to improving the urban landscape design. In this way, the project intended to apply the landscape plan guideline of the IFEZ for a detailed landscape design guideline of the Godeok District. Ultimately, it is expected that the visualized examples in this study adequately envision the color landscape guidelines of the Godeok district.