프로세스 마이닝을 활용한 생산 공정 데이터 분석

송민석,정일교,조용주,조현제 대한산업공학회 2012 대한산업공학회 춘계학술대회논문집 Vol.2012 No.5

Water-soluble binder system with controlled mechanical and rheological properties

송민석,박민수,김진곤 한국고분자학회 2004 한국고분자학회 학술대회 연구논문 초록집 Vol.29 No.2

國內企業의 對北韓 役資에 관한 硏究

宋珉錫 건국대학교 1995 대학원 학술논문집 Vol.41 No.-

The purpose of this study is to explain the present conditions and problems of the investment in North Korea of Domestic firms, and further explore the activationary plan of the investment in North Korea Domestic firms. Reflecting on the thirty years which have passed since Korea was divided, it is clear that since 1953 the economy of the two Koreas has undergone may changes under their two different social and economic systems, and that the two economies will continue to follow different courses in the future. North Korea has acted a passive attitude toward the foreign trade, because she has pursued the autarchic economic development policy on the basis of the socialistic economic system as yet. Therefore, she has congnized that it is impossible to develop the economy by the principle of the self-revival what is to say a self-support national economy and the closed trade system which has been excuted in the countries centering on the Communistic Area. So she had to change to the foreign trade system as the open system by transforming the autarchic system they hierto adhered to. This brief overview of recent developments attempts to compare various economic indicators and thus show how rapidly the Congress. This remains a principal government policy down to the present day. Judging from these circumstances as mentioned above, it can be suggested that the economy of North Korea holds certain structural defects which will eventually bring aboutq a transformation from the presently closed society to an open one. Any dramatic changes in the basic policy guidelines which have been followed to date, however, would mean the abandonment of the fundamental ideology and the political posture which supports the present system. As a result, it seems probable that the 1990s will be a period of expand bilateral partnership in the areas of economy between South and North Korea.

Powder injection molding using water-soluble binder

송민석,박민수,김진곤 한국고분자학회 2004 한국고분자학회 학술대회 연구논문 초록집 Vol.2004 No.04

악관절 강직증에 관한 임상적 연구

민병일,송민석 大韓顎顔面成形再建外科學會 1995 Maxillofacial Plastic Reconstructive Surgery Vol.17 No.1

Temporomandibular joint ankylosis is the movemental obstacle of mandible which depend on proliferation of bony or fibrous tissue in temporomandibular joint structure by various causes. In order to treat this, various surgical methods have been performed, but no operative methods have been produced consistently successful results. This research has been performed to the patients who had been operated due to temporomandibular joint ankylosis by studying classification, cause, onset, duration, anesthesia and treatment method, symptom, change of mouth opening, complication through medical record, X-ray, follow-up for being a help to proper selection of treatment method and evaluation of prognosis. The author obtained the following results by analyzing 44 cases among patients who had been operated due to temporomandibular joint ankylosis during 8 year hospitalization from 1986 to 1993 in Dept. of Oral & Maxillofacial Surgery of Seoul National University Hospital. 1. The occurrence was in the order of below 10, 20's, 10's, 30's. The average of occurrence was 12.95. Illness period was 50.0% within 10 years and 50% beyond 10 years. The average period of illness was 13.33 years. 2. Trauma occupied 54.5% of causes and inflammation occupied 45.5%. Men had more occurrences due to trauma and there was no difference in case of inflammation. 3. In nasotracheal intubations for general anesthesia, the cases of using fiberoptic larygoscope occupied 40.9%, direct or blind nasotracheal intubation occupied 40.9% and the cases of using tracheostomy occupied 18.2%. 4. In operative approaching methods, submandibular & preauricular approach were mainly applied, and in operative methods, high condylectomy(Group I) occupied 11.4%, arthroplasty without interpositional material following condylectomy or gap ostectomy(Group Ⅱ) occupied 11.4%, with interpositional material following high condylectomy (Group Ⅲ) occupied 40.9%, and using condylar reconstruction following condylectomy or gap ostectomy(Group Ⅳ) occupied 36.6%. 5. In change of mouth opening reformed after surgery, Group Ⅲ showed the best result of average 23.5mm, Group Ⅳ showed 16.3mm, Group Ⅰ showed 14.9mm and Group Ⅱ showed 10.2mm of reformation. Summarizing the results as written above, it is considered that early treatment is important as soon as possible in Temporomandibular joint ankylosis. It is recommended in surgical method what can lead to postoperative early movement maintaining anatomaical & functional form, and then the development of various surgical methods will be requested.

한국어 연속음성에서의 조사 및 어미 인식에 관한 연구

송민석,이기영 한국음성과학회 1999 음성과학 Vol.6 No.1

This study proposes a method of recognizing postpositions and suffixes in Korean spoken language, using prosodic information. We detect grammatical boundaries automatically at first, by using prosodic information of the accentual phrase, and then we recognize grammatical function words by backward-tracking from the boundaries. The experiment employs 300 sentential speech data of 10 men's and 5 women's voice spoken in standard Korean, in which 1080 accentual phrases and II postpositions and suffixes are included. The result shows the recognition rate of postpositions in two cases. In one case in which only correctly detected boundaries are included, the recognition rate is 97.5%, and in the other case in which all detected boundaries are included, the recognition rate is 74.8%. Keywords: accentual phrase, backward-tracking, continuous speech

AI 기반 패션 추천 서비스 개발 : 삼성물산 산학연구 소개

송민석 대한산업공학회 2021 ie 매거진 Vol.28 No.1

구조보존규칙으로서의 영어 비음동화:[η]에 대한 해결책

宋旼錫 관동대학교 1995 關大論文集 Vol.23 No.2

The velar nasal [ŋ] is an allophone of /n/ in English. This fact is evidenced by distributional restrictions. That is, [ŋ] always appears before /g/ or /k/, while /m/ and /n/ occur freely. But in the theory of Lexical Phonology, the English Nasal Assimilation which derives the velar nasal [ŋ] must be a phonological rule which applies in the lexicon. For this rule must precede the morphological process suffixing '-er', as shown in the examples of "sing" and "singer" ("singer" is pronounced as [siŋ( )r], not as [siŋg( )r]). On the other hand, a lexical rule must be structure-preserving in the sense that if a feature is not distinctive in any context it may not play any role in the lexical phonology(Kiparsky, 1984). With regard to this principle of Structure Preservation, the above nasal assimilation has a problem because this process is not structure-preserving but must be lexical. To solve this problem, Borowsky(1986) says that the above nasal assimilation is applied at level 2 and that the principle of Structure Preservation turns off at level 2. This is an ad hoc solution. If this solution is accepted, the word of "concord" must be derived at level 2 while the words of "combine" and "concern" are derived at level 1 (independently motivated). This paper tries to solve this problem in the standpoint of the feature geometry theory. In the feature geometry, the process of spreading to an underspecified target is interpreted as structure-preserving. And the above nasal assimilation is a process of spreading to an underspecified target because the place feature of the phoneme /n/ is underspecified in the underlying representation. In the result, the English nasal assimilation is a structure-preserving process and can apply freely in the lexicon. As another desirable result, we can say that all lexical phonology is structure-preserving.

Balancing MPEG Transcoding with Storage in Multiple-Quality Video-on-Demand Services

송민석,심정섭,Jaedoo Go,Bumsun Lee,박수준 한국전자통신연구원 2009 ETRI Journal Vol.31 No.3

To match the requirements of heterogeneous mobile devices, video objects may be transcoded, which requires considerable CPU resources. Alternatively, multiple versions of the same video may be stored on servers, but this requires a lot of disk space. We formulate the trade-off between the versions that are stored on disk and the need for transcoding. We propose an optimal solution to this formulation based on dynamic programming. Experiments show that our scheme allows up to 68% more clients to be admitted than conventional schemes when a reasonable amount of storage is available.

점막하 자궁근종으로 오인된 탈락막 원주의 자연배출 1예

송민석,김승룡,김성희,유창준,이정환,조출현,이정한 대한산부인과학회 2008 대한산부인과학회 학술대회 Vol.94 No.-