알루미늄 합금과 고장력 강판 접합을 위한 헬리컬 SPR의 단조공정 설계

김원영, 김동범, 김기호, 김도훈, 이인환, 조해용 충북대학교 산업과학기술연구소 2013 산업과학기술연구 논문집 Vol.27 No.2

A self-piercing rivet(SPR) is a mechanical component for joining dissimilar materials. It is used for joining dissimilar material sheets such as aluminum alloy and steel. The self-piercing rivet directly pierces into sheets without drilling sheets beforehand unlike conventional rivets. However, the self-piercing rivet occurs buckling when piercing high strength steel. Therefore, a helical SPR which can pierce high strength steel sheet was designed. In this study, forging process was designed for manufacturing the helical SPR and simulated by using commercial FEM code DEFORM-3D. In the simulation of forging process for manufacturing rivet, process sequence, formability, forging load were investigated. The suitable forging process could be designed by comparisons of simulated results. Experimental trials have been carried out for same conditions as simulated ones. The simulated results agreed with the experimental ones. So, the analytic approach in this thesis is useful to save cost and time in the forging industry

새고막을 이용한 분말조미료 가공

오영열,강동수,김해섭,김경은,최옥수,배태진 여수대학교 산업기술지역개발연구소 2000 産業基術硏究所 論文集 Vol.9 No.-

Conditions for processing dried condiments with bloody clam were investigated. The enzymatic hydrolysis for 1 hour was more profitable than hydrothermal extraction to develop flavoring matters from bloody clam. As a result of omission tests, nucleotides were predominated in the taste compounds of bloody clam hydrolysates rather than free amino acids, and the contribution of nucleotides and free amino acids to the taste of bloody clam hydrolysates was remarkable. The major flavoring components of bloody clam hydrolysates were free amino acids and oligopeptides below 500 dalton. When bloody clam hydrolysates were separated with membrane(molecular weight cutoff 500 dalton) for recovering flavor, recovering yields of amino type nitrogen were 92.4%. Proximate compositions of dried condiments prepared with protease hydrolyzed bloody clam were moisture content 3.6%, total nitrogen were 71.2% amino nitrogen were 47.8%. And drying yield, solubility and absorption rates at Aw 0.88 were 21.4%. 86.3% and 6.6%, respectively.

상(aspect)의 이중적 본질에 관한 연구

최해영 서경대학교 인문과학연구소 1997 人文科學硏究 Vol.2 No.-

This thesis aims to analyze the dual nature of the English aspect, which consists of the verbal lexical meaning and the inherent temporal semantic feature of the situation. The aspect has inseparable relationship to aktionsart, as the former is a grammatical category representing the speaker's viewpoint on the situation indicated by the verb and the latter is a objective category representing the inherent temporal feature of the verb, its NP arguments and adverbials etc. I am arguing that the interpretation of the aspectual meaning should be considered into the mechanical combination of the aspect and aktionsart.

民族主義的 側面에서 본 韓國文學 : 日帝治下의 文學을 中心으로 Especially during the Japanese Rule of Korea

梁重海,金時泰,金永和 제주대학교 1973 논문집 Vol.5 No.-

How national consciousness is reflected in Korean literature during the Japanese rule of Korea can be a matter of our concern, partly because national consciousness and nationalism embedded in literary works were one of our issues of that period, and partly because it is significant to fathom the historical import of such literature and explain its present implications. In this article, main Colonial literary works with deep layers of national consciousness and nationalism in them are looked into in three separate genres:(1) poetry, (2) fiction, (3) criticism. In poetry, national self-esteem and resistance to Japanese imperialism were urged suggestively and metaphorically in the form of expressions peculiar to poetry. In fiction, the first phase of the resistance characterized by negative enlightenment eventually grew into the phase of positive, though suggestive, manifestation and description of the spirit of resistance. In literary criticism, first, most critics analyzed the discord and friction between nationalism and socialism by inquiring into the process through which these two ideologies were introduced into literature and by surveying the scope of literary theories based on the two ideas. Secondly, they tried to find the historical import and the sphere of nationalistic literary theories by analyzing the reflection of such theories in Korean society described in literary works, and by analyzing the contribution of such theories to the formation of spiritual structure of Korean literature. Such literature tells us that literature can not be separated from realities of the times and that it abstracts and reorganizes the notions of the age. In that respect, we can assert that the Koreans under the Japanese rule criticized, denied, and resisted the Colonial age instead of accepting it tolerantly.

접착용 레진을 이용한 유치의 직접 치수복조술에 관한 연구

조해성,최영철 大韓小兒齒科學會 2006 大韓小兒齒科學會誌 Vol.33 No.2

오랜 기간동안 다양한 약제를 통한 직접 치수복조술이 시도되어 왔다. 그 중 가장 보편적으로 사용된 약제는 수산화칼슘이다. 하지만 유치에서 수산화칼슘을 이용한 직접 치수복조술의 성공률은 생활치수절단술에 비해 낮다고 보고 되어 왔다. 수산화칼슘의 단점으로 인해 다른 치수복조제를 찾기 위한 많은 연구가 있었으며 최근 여러 연구가들은 치수복조제로 접착용 레진의 이용을 제안하였다. 그들은 노출된 치수에 접착용 레진이 적용되었을 때 임상적 증상이 없이 염증이나 치수괴사가 없다고 주장하였다. 이 연구의 목적은 유치에서 기계적으로 노출된 생활치수에 치수복조제로써 수산화칼슘과 접착용 레진을 적용하여 단 기간 동안의 예후를 비교해 보고, 또한 각각의 직접 치수복조술을 시행한 유치에 있어 생리적인 치근흡수 유무에 따른 예후의 차이를 비교해보기 위함이다. 와동형성 중 기계적으로 치수가 노출되어 생활 치수인 유치 41개를 대상으로 하였다. 그중 접착용 레진으로 치수복조제로 사용한 치아 21개를 1군으로 하였고, 수산화칼슘을 이용한 치아 20개를 2군으로 하였다. 그리고 제 1군과 2군의 치아들은 치근단방사선 소견을 통해 생리적인 치근흡수의 유무여부에 따라 다시 세분되었다. 모든 치아는 복합 레진으로 수복하였으며, 시술 4개월 후 타진반응, 냉 검사, 전기치수검사 등의 치수 생활력검사와 치근단방사선 소견으로 성공여부를 판단하였다. 결과는 다음과 같다. 1. 1군과 2군 사이의 성공률에는 유의한 차이가 없었다. 2. 각 군에서 생리적인 치근흡수가 없는 유치보다 있는 유치에서 성공률이 현저히 높았다. 3. 전치와 구치사이의 성공률에는 유의한 차이가 없었다. A direct pulp capping with different medicaments has been attempted for a long time. The most commonly used among those is the calcium hydroxide. In primary teeth, however, a success rate of direct pulp capping with calcium hydroxide has been reported to be lower than that of puplotomy. The disappointing results of calcium hydroxide have prompted the search for other capping materials. Lately, several researchers suggested an application of adhesive resin-based composite systems as a capping material. They claimed that when an exposed vital pulp is capped directly with bonding resin, the pulp tissue is free of inflammation or necrosis without clinical symptoms. The aim of this study was to compare short-term effects of the bonding resin which was applied on the mechanically exposed vital pulp tissue and those of direct pulp capping with calcium hydroxide. The second objective was to compare success rates of the primary teeth which already underwent physiologic root resorption and those of the teeth which had not undergone physiologic root resorption yet. in each capping material groups. The vital, healthy pulp of forty-one primary teeth were exposed mechanically during a cavity preparation. They were divided into two groups: Group 1(n=21) underwent capping with bonding resin, and group 2(n=20) underwent capping with calcium hydroxide. Then these two groups were subdivided into two groups in each: the teeth which show physiologic root resorption and the teeth without root resorption. All of the sample teeth were restored with composite resin. Clinical evaluations such as percussion test, ice test, EPT, were recorded and also before- and after- standard x-ray films were compared and evaluated to decide whether the case was successful or not. Evaluation was performed at least 3 months after the capping materials. The results were as follows: 1. There was no difference in success rate between group 1 and group 2. 2. Success rate of the teeth with physiologic root resorption was higher than that of the teeth without physiologic root resorption in group 1 and group 2. 3. There was no difference in success rate between anterior teeth and posterior teeth.

영어 수동문의 의미에 관한 연구

최해영 서경대학교 인문과학연구소 1999 人文科學硏究 Vol.7 No.-

상조동사(aspectualizers)에 관한 연구

최해영 서경대학교 인문과학연구소 1997 人文科學硏究 Vol.3 No.-

This thesis aims to analyze the meaning of aspectualizers by aktionsarten. In view of their analyses aspectualizers and their conplement verbals form a single semantic and functional criteria for auxiliary membership. Semantically, they are analysable using logical or relational features alone, without reference to lexical features. They qualify as auxiliary verbs under a universal definition of a clausal operator. Aspectualizers and other catenatives are functionally equivalent to the traditionally recognized auxiliaries, and functionally distinct from the corresponding full verbs. Finally, aspectualizers interact with the other aspectual features of the context in a manner analogous to that of the accepted aspect auxiliaries, have and be aspectralizers are freely combined with activities and accomplishments, but they have the restriction of combination with states and achievements. These grammatical qualities between aspectualizers and the verbal classes are the same as the progressive aspect.

영어 진행형의 연구 : 동사분류를 중심으로 On the base of the verbal classification

최해영 서경대학교 1992 論文集 Vol.20 No.-

This thesis shows a study of the progressive form in English from the standpoint of the prescriptive grammar. The native speakers commands the progressive form according to their linguistic intuition, but non-native speakers to learn English as a foreign language have come to face certain limitations of the linguistic intuition. And so under the hypothesis that there may be certain criteria on the verbal meaning to accept the progressive, this thesis focuses on classifying the verbal meaning as to whether the progressive is to be accepted or not. To do such a study, I have been in search of the basic verbal meaning in the scope of the prescriptive grammar. The study of the basic verbal meaning is based on the theories of the traditional grammarians ; Jesperson, Reichenbach, and Leech etc. And this thesis has been studied on the ground of the classification about the verbal merning to accept the progressive form that Vendler and Quirk have avouched. Vnedler classifies the verbal meaning as follows : 'states', 'activities', 'accomplishments', and 'achievements'. He is arguing that 'states' and 'achievements' are able to accept the progressive form, but 'activities' and 'accomplishments' are not. Quirk classifies the verbal meaning as 'dynamic' and 'stative'. He is arguing the former is able to accept the progressive form and the latter is not. However, in consequence of examining the usage of the verbal meaning according to the adaptation of practical sentences, this thesis has proved that when the verbal meanings with 'activities', 'accomplishments', and 'dynamic' are shifted to the other ones the progressive forms are acceptible. I am proposing in conclusion that it will be studied much more in time to come whether the progressive form is acceptable or unacceptable by means of the verbal meaning classified by Vendler and Quirk.

영어의 완료상(The Perfect aspect)에 관한 연구

최해영 서경대학교 1995 論文集 Vol.23 No.1

This study aims to analyse the individual meanings of the perfect aspect and the relevant implication of it in terms of the context by comparing the definitions of various scholars on aspect, although grmmarians are not in agreement about them. This study has led to the conclusion that the individual meanings of the perfect aspect are the result, the continuation, the experience and the completion. The perfect aspect is one of the two most outstanding English aspectual system. It has also proven that the perfect aspect has much to do with the potential implication by means of the contextual situations. The simple past tends to replace the perfect aspect in American English. The British English prefers the present perfect to the American English. The individual meanings of the present perfect are influenced by the occurrence of the adverbial. The visual sensationm and linguisitc intuition play an important role in the choice of the simple past and the present perfect. I am contending that the perfect aspect has the four basic meanings in most cases of the situation and the current relevance to the past situations. But I hope a better study will be done hereafter.

牧草의 混播가 分蘗數 및 葡蔔枝數에 미치는 影響

丁海鎭,정규관,朴永道 東亞大學校生命資源科學大學附設 農業資源硏究所 1994 農業生命資援硏究 Vol.3 No.1

牧草의 混播가 植生變化에 미치는 影響을 究明하고자 禾本科牧草를 5個 草種 6品種과 荳科牧草 2個 草種 4品種을 供試하여 5㎝×5㎝ 栽植거리로서 人爲的으로 混播集團을 形成, 栽培하여 分蘗數 및 葡萄枝數를 調査한 結果 다음과 같다. 1. 各 草種別 分蘗數는 perennial ryegrass(CV. Antrim, Rathlin)가 가장 많았고, hybrid ryegrass(CV. Augusta), meadow fescue(CV. S. 215), tall fescue(CV. Dovey), cocksfoot(CV. Cambria) 順으로 減少되었으며, 荳科牧草는 white clover(CV. S. 184, Donna)가 red clover(CV. Astra, Deben)보다 높게 나타났다. 2. 荳科牧草는 半直立型이며 잎이 좁거나 짧고 分蘗力이 中間程度인 cocksfoot, meadow fescue와 같은 禾本科牧草와의 混播에서 生育과 收量이 良好하였다. 3. 荳科의 越冬率이 높았던 混播組合에서는 葡萄枝數가 增大되고 荳科比率이 높아져서 總收量이 增大되었다. With a purpose to investigate the effects of grass-clover mixtures on herbage yield and sward composition, a set of sward canopy of grass-clover mixtures with d density of 5㎝×5㎝ was established with six cultivars of grasses and two cultivars of legumes. The number of tillers of stolons per plant and sward composition of mixtures was compared with that of single stand. The number of tillers per plant was highest in perennial ryegrass(CV. Antrim, Rathlin), followed by hybrid ryegrass(CV. Augusta), meadow fescue(CV. S. 215), tall fescue(CV. Dovey), and cocksfoot(CV. Cambria). When the legumes were combined with the grasses which have semierect plant type bearing narrow and short leaves with a medium tillering capacity, the dry matter yield of the mixtures increased significantly. Higher wintering rate in grass-clover mixtures resulted in an increase of stolones, higher compositions of legumes in the mixture, and consequently higher herbage yield.