Cu-TiB₂ 복합재료의 마모거동에 관한 연구

김정남,최종운,강계명,Kim Jung-Nam,Choi Jong-Un,Kang Kae-Myung 한국재료학회 2005 한국재료학회지 Vol.15 No.1

The titanium $diboride(TiB_2)$ has high strength(750MPa), high melting point $(3225^{\circ}C)\;and\;10\%$ IACS electrical conductivity. On this account, the dispersion hardening $Cu-TiB_2$ composites(MMCs) are a promising candidate for applications as electrical contact materials. MMCs for electrical contact materials can reduce material cost and resource consumption caused by wear, due to its good mechanical and electrical property. In this study, we attempt to prepare MMCs with various volume fraction and particle size of $TiB_2$ by means of hot extruded and cold drawn process. Dry sliding wear tests were performed on a pin-on-disk type wear tester, sliding against SM45C under the different applied loads. After wear testing, the microstructures of the worn surfaces were observed by SEM and the microhardnesses of the subsurface zone were measured.

조자(造字) 원칙 관점에서 본 “訛變” 小考

김정남(Kim, Jung-Nam) 한국중어중문학회 2016 中語中文學 Vol.0 No.65

corruption(訛變) is an irregular process of change that does not follow the principles of change in ancient characters. Originally, corruption was regarded as a unique phenomenon that occurred temporarily, but we’ve newly confirmed that corruption is not a temporary phenomenon but rather a process of ancient character transition that continuously occurred through excavated documents that has continued to be discovered since the 20<SUP>th</SUP>century. This paper chose the major principles that form the structure of ancient characters such as Heosin’ssuggestion of The Six Principles Theory (六書) rather than a temporary unique corruption. In order to emphasize the necessity of that, we show how the structures of ancient characters were changed through examples of real transitions, and regard this as the occurrence of a new character shape. We suggested a couple required conditions for making these characters as a rule: first, they have to be separate from corruption concepts in existing variant forms, and secondly, they are selected as having different range principles different from Chinese character classification, such that the Chinese character transition process needs to be explained.

安徽簡『詩經』과 전래본 『詩經』의 문자 차이 고찰

김정남(Kim, Jung-nam) 한국중어중문학회 2020 中語中文學 Vol.- No.82

Bamboo slips collections of AnHui University shijing, which was officially announced in 2019, has a significant number of character differences compared to Maoshiben. These differences can be covered in the categories of Variant Characters in a large way, but in detail, they can be divided into Ancient and Modern Word, Interchangeable Words, Vulgar Characters. Through the discovery of Bamboo slips collections of AnHui University shijing, the cause of this difference can be found. This paper would like to examine the various character differences by presenting some examples related to this. The conclusions obtained from the analysis are as follows: First of all, the process of transferring editions by period was not smooth. Secondly, the character difference between Bamboo slips collections of AnHui University shijing and Traditional shijing is mainly caused by the Interchangeable Words. Thirdly, certain types of shapes were added as needed. It is estimated that this method was useful in transforming the historical perspective into a scripture.

학습자용 활용형 사전을 위한 제안

김정남(Kim Jung-nam) 한국사전학회 2003 한국사전학 Vol.- No.2

This paper is written for two purposes. One is to emphasize the necessity for the editing of Korean conjugation dictionary for learners of Korean as a foreign language. Another is to propose the orientation of the design of the Korean conjugation dictionary. At present, it is true that the theme dictionary is rare. The dictionary that explains the grammatical items has been being published one after another, but it seems that there are not many who realize the acute necessity of the Korean conjugation dictionary. That point is the motivation of this paper. In this paper we explained why the Korean conjugation dictionary is necessary for learners of Korean as a foreign language, especially for beginners, and examined how it is designed and consisted. In the Korean conjugation dictionary, the entries are not words or morphemes but combinations of nouns and postpositions or verbal stems and endings. And we proposed to select and register the homonyms to make this dictionary successful in practical usage. That is, it is recommended to register both '가니1' and '가니2' for respectively the inflected form of '가다' and that of '갈다', so that the user can find out the basic form of each inflected form easily. It is preferred to give the semantic information only in the entry for the basic form, because giving the semantic information in every inflected form is inefficient.

Charge-trap Flash 메모리 기반 채널 적층형 3 차원 AND형 시냅스 어레이와 동작 방법

김정남(Jung Nam Kim),김윤(Yoon Kim) 대한전자공학회 2022 전자공학회논문지 Vol.59 No.1

본 연구에서 charge-trap flash 메모리 기반 채널 적층형 3 차원 AND형 시냅스 어레이 및 제안한 어레이의 층별 동작 수행을 위한 층별 선택회로를 제안하였다. Folwer-Nordheim (FN) 터널링을 기반으로 하는 시냅스 어레이 및 층별 선택 회로의 동작 방법을 제안하였다. 시냅스 어레이의 3차원 구조 및 층별 선택 회로를 고려한 technology computer-aided design (TCAD) 소자 시뮬레이션을 수행하여 시냅스 가중치 조절 중에 발생할 수 있는 간섭 현상을 확인하였다. 이를 통하여 본 연구에서 제안한 3차원 AND형 시냅스 어레이 동작 방법의 실현 가능성을 확인하였다. In this work, we proposed a channel stacked three-dimensional (3-D) AND-type synapse array based on charge-trap flash (CTF) memory with a layer select circuit which provides layer specific operation of synapse array. In addition, we proposed Fowler-Nordheim (FN) tunneling based operation methods of synapse array and layer select circuit. We performed technology computer-aided design (TCAD) device simulation considering the 3-D structure of the synapse array and layer select circuit to verify any disturbance while modulating synaptic weight. We demonstrated the feasibility of the operation methods of 3-D AND-type synapse array which are proposed in this work.

국어 형용사의 의미 구조

김정남(Jung Nam Kim) 한국어의미학회 2001 한국어 의미학 Vol.8 No.-

The purpose of this thesis is to clarify the meaning structure of Korean adjectives. To achieve this difficult purpose I tried two. The first is to decide the common semantic features of Korean adjectives. And the second is to classify Korean adjectives to several subclasses. As a result, seven semantic features are established as common features of Korean adjectives, and seven subclasses are decides in Korean adjectives, too. These seven classes are divided to several subclasses, case by case, of course. Seven semantic features are: [+Stative], [+Preservable], [-Momentary], [-Changeable], [+Perfective], [-Progressive], [+Degree]. Seven classes are: (1) sensibility adjectives, (2) emotion adjectives, (3) nature adjectives, (4) attitude adjectives, (5) shape adjectives, (6) estimate adjectives, (7) the rest adjectives. In addition to, I examined the basic sentence patterns of the subclasses.

『詩經』 「關雎」 新解釋 - 안휘간(安徽簡) 『詩經』을 중심으로

김정남(Kim, Jung-nam) 한국중어중문학회 2020 中語中文學 Vol.- No.79

Bamboo slips collections of AnHui University guanju of the book of song is the oldest known edition. The literature compiled in the Warring States era is quite different from the hand-down guanju of the book of song. The conclusions obtained from the comparison between the hand-down and Bamboo Slips Collections of AnHui University are as follows. The first is the subject of guanju of the book of song. the main character of the hand-down guanju of the book of song is houfei(后妃). but the one of Bamboo slips collections of AnHui University guanju is junzi(君子). The author likened the process of junzi`s finding a lady and making a family home to a process of finding vegetables and making them food for ancestral rites. Secondly, it is a lady’s identity. The lady of the hand-down is a person who is affectionate, judgmental, and gentle but does not show her passion. However, A bamboo slips collections of AnHui University lady emphasized her beautiful appearance by putting her back in a medium. It is certainly not the case for expressing high internal values like the original, and the ideological color is not as rich. Comparing the contents of the two editions, the main theme of love and marriage between men and women was when guanju was popular as a folk song, but since the Confucianization policy of Han(漢) Dynasty, houfei has been reconstructed to find a lady of high internal values and pair the world with junzi to “cultivate” the world. The new interpretation of this paper was focused on the differences between the characters of the hand-down and Bamboo Slips Collections of AnHui University, but it is believed that for a more rigorous new interpretation, the related annotation or historical context should be reinforced.

淸華簡 『金縢』을 통해 본 『尙書』 ‘詰屈聱牙’ 현상의 유형적 고찰

김정남(Kim, Jung-Nam) 중국문화연구학회 2015 중국문화연구 Vol.0 No.27

특집 : 텍스트언어학과 언어교육 ; 대학 작문 교육에서 텍스트 이론의 적용 가능성에 대한 검토

김정남 ( Jung Nam Kim ) 한국텍스트언어학회 2004 텍스트언어학 Vol.17 No.-

잡지 텍스트의 언어 특성 -교양물 잡지 기사를 중심으로-

김정남 ( Jung Nam Kim ) 한국텍스트언어학회 2008 텍스트언어학 Vol.25 No.-

This study aims to analyze several typical features of magazine texts. The research is based on materials extracted from magazines dealing with interesting and beneficial contents. The items are indicated as the main characteristics of magazine texts. They are frequent usage of presentational words, cut sentences, and vice ordered words in sentences. First, I maintain that the presentational words have cohesion with other constituents in the next sentences. This point of view differs from preceding research based on sentence grammar. The binding devices that connect the presentational words and other constituents are anaphora, dexis, repetition of the same nouns, and the use of subordinate concept words. There are various types of cut-sentences. In the magazine text, some sentences end with a noun, others end with a connective ending, and others end without a predicate. The last property of magazine texts is the reverse order of clauses consisting of one sentence or the series two sentences.