성악 전공 학생의 가칭 시 음성의 SPR(Singing Power Ratio)에 관한 연구

조성미,정옥란,이상욱 한국음성과학회 2004 음성과학 Vol.11 No.4

This study attempted to provide a spectrum analysis for quantitative evaluation of singing voice quality of singing students rather than the presence or absence of the singer's formant. The regression analysis was used to analyse the relationship between ringing quality, SPR, and SPP of singing voice of college student subjects majoring in music. This study measured singing power ratio (SPR) in 41 singing students. Digital audio recordings were made in sung vowels for acoustic analyses. Each sample was judged by 1 experienced singing teacher and 4 voice pathologists on one semantic bipolar 7-point scales (ringing-dull). The results showed that the SPR and SPP had significant correlations with ringing Quality. The SPR had a significant relationship with ringing quality on singing voice in singing students. The SPR can be an important quantitative measurement for evaluating singing voice quality.

한국인 직무 스트레스 측정도구의 개발 및 표준화

장세진,고상백,강동묵,김성아,강명근,이철갑,정진주,조정진,손미아,채창호,김정원,김정일,김형수,노상철,박재범,우종민,김수영,김정연,하미나,박정선,이경용,김형렬,공정옥,김인아,김정수,박준호,현숙정,손동국 大韓産業醫學會 2005 대한직업환경의학회지 Vol.17 No.4

Background and Purposes: Over the past three decades, numerous studies performed in Korea have reported that job stress is a determinant risk factor for chronic diseases and work disability. Every society has its own culture and occupational climate particular to their organizations, and hence experiences different occupational stress. An occupational stress measurement tool therefore needs to be developed to estimate it objectively. The purpose of this study is to develop and standardize the Korean Occupational Stress Scale (KOSS) which is considered to be unique and specific occupational stressors in Korean employees. Subjects and Methods: Data were obtained from the National Study for Development and Standardization of Occupational Stress (NSDSOS Project: 2002-2004). A total of 12,631 employees from a nationwide sample proportional to the Korean Standard Industrial Classification and the Korean Standard Occupational Classification were administered. The KOSS was developed for 2 years (2002-2004). In the first year, we collected 255 items from the most popular job stress measurement tools such as JCQ, ERI, NIOSH and OSI, and 44 items derived from the a qualitative study (depth interview). Forty-three items of KOSS, in the second year, were retained for use in the final version of the KOSS by using Delphi and factor analysis. Items were scored using conventional 1-2-3-4 Likert scores for the response categories. Results: We developed eight subscales by using factor analysis and validation process: physical environment (3 items), job demand (8 items), insufficient job control (5 items), interpersonal conflict (4 items), job insecurity (6 items), organizational system (7 items), lack of reward (6 items), and occupational climate (4 items). Together they explained 50.0% of total variance. Internal consistency alpha scores were ranged from 0.51 to 0.82. Twenty-four items of the short form of the KOSS (KOSS-SF) were also developed to estimate job stress in the work setting. Because the levels of the subscales of occupational stress were gender dependent, gender-specific standard norms for both the 43-item full version and the 24-item short form using a quartile for the subscales of KOSS were presented. Conclusion: The results of this study suggest that KOSS might be an appropriate measurement scale to estimate occupational stress of Korean employees. Further and more detailed study needs to be conducted to improve the validity of this scale.

혈액 투석 환자에서 중심정맥 협착에 대한 스텐트 삽입술 : Wallstent Placement

임대승,노상필,이유선,정승현,김보영,이정우,강정아,김정희,이민수,정준용,최시완,정진옥,성인환,이강욱,신영태 충남대학교 의과대학 의학연구소 2002 충남의대잡지 Vol.29 No.1

Stenosis of central vein is a common complication arising after percutaneous subclavian vein catheter insertion performed for temporary vascular access in chronic renal failure patients undergoing hemodialysis. There are several treatment methods for the condition like percutaneous angioplasty(PTA), stent insertion, and surgery, but recent trend is toward PTA and stents. Among the patients diagnosed with chronic renal failure from March 1993 to May 2002 and undergoing hemodialysis through AV fistula, the 14 Patients in whom central vein stenosis arose were selected for the study. A total of 28 percutaneous interventions(5 PTA and 23 stent placement) were performed, and restenosis rate and the time taken till the restenosis in de novo lesions and instant lesions were compared. All 28 cases were operated successfully. The 14 cases that received both anigioplasty and stent placement initially. (de novo lesion : 14 cases), Among the 10 cases with de novo lesion that followed up more than 1 year, 3 cases are currently undergoing hemodialysis without restenosis, and the remaining 7 cases have recurred stenosis with the mean time to restenosis of 10.9 months. In the 7 cases in whom stenosis recurred, 11 interventions were done(instent lesion: 11 cases). 4 of these were using only ballon angioplasty with 100% restenosis rate and the mean time of 3 months until restenosis. The remaining 7 cases were using both balloon angioplasty and stent placement, also with 100% restenosis rate but with the mean time of 12 months until restenosis, which was later than the group receiving only balloon angioplasty. In treating the patients with central vein stenosis, stent placement seems to be more advantageous over PTA in terms of restenosis rate and the mean duration of patency. In the case of instent lesion, inserting the stent for the second time after stenosis recurred lengthened the duration of patency compared to performing balloon angioplasty alone.

말초염증에 의한 등족뿌리신경절의 brain-derived neurotrophic factor 합성의 변화

김상열,김정기,김효신,이상지,하선옥,홍해숙,김동선 대한해부학회 1998 Anatomy & Cell Biology Vol.31 No.3

Zn과 Cd의 처리가 GA와 Uniconazole 전처리된 메리골드 'Orange Boy'의 생육과 무기물 흡수에 미치는 영향

정성우,정연옥,허무룡,박중춘 경상대학교 농업생명과학연구원 2002 농업생명과학연구 Vol.36 No.4

메리골드(Tagetes patula L. 'Orange Boy')를 통해 오염지 식생복원과 동시에 양호한 식생경관 조성재료로서의 가능성을 알아보기 위해 본 실험을 수행하였다. 메리골드 'Orange Boy'에 있어서 Zn과 Cd 100+20㎎·L^-1 처리구에서는 GA_3 와 uniconazole은 생체량 및 Zn과 Cd의 축적에는 영향을 주지 않았다. 생장조절제 무처리구의 Zn과 Cd의 200+40㎎·L^-1 처리구에서 대조구의 20%로 건물량이 감소하였다. Zn과 Cd의 농도별 혼용처리에 따른 체내 무기성분 T-N, P, K, Ca, Mg함량은 뚜렷한 경향이 없었고, Zn의 축적은 뿌리와 잎에서 각각 1,227 및 903㎎·㎏^-1, Cd의 경우 줄기와 잎에서 각각 89.7 및 77.4㎎·kg^-1의 최대의 농도를 보였다. The use of plant-based systems to remediate contaminated soils has become an area of intense scientific study in recent years and it is apparent that plants which grow well in contaminated soils need to be identified and screened for use in phytoremediation technologies. This study was conducted to determine the effects of various combinations of Zn and Cd on growth and mineral concentrations of Tagetes patula L. 'Orange Boy'. With 100㎎·L^-1 Zn + 20㎎·L^-1 Cd, GA_3 and Uniconazole did not increase the plant biomass, and accumulation of Zn and Cd Total dry weight with 200㎎·L^-1 Zn and 40㎎·L^-1 Cd was 20% that of control. There was no significant to T-N, P, K, Ca, and Mg contents in leaf, stem, and root. The Zn contents of root and leaf were 1,227 and 903 ㎎·kg^-1, respectively. While the Cd was accumulated different site compared to Zn, the highest accumulation place were stem (74.4 ㎎·kg^-1) and leaf (89.7 ㎎·kg^-1).

상수 응집제 황산알루미늄과 PAC 응집처리 후 염소 및 오존산화처리에 따른 부식물 색도 및 중금속류의 제거

옥치상,김정아 高神大學校 保健科學硏究所 1993 보건과학연구소보 Vol.3 No.-

The removal of heavy metals by chlorination and ozonization after coagulations in drinking water treatment was investigated. Based on the results, the optimal coagulant concentrations to remove heavy metals were 10ppm for alum at pH 8, 10ppm for PAC at pH 7, respectively. The removal of Pb, Cu and Cd in heavy metal samples was high in alum and PAC coagulation. And in removal of Pb, Cu and Cd, PAC was more effective than alum. The removal of heavy metals by oxidation after coagulation were that ozonization was more effective than chlorination.

효소 단백 가수분해물의 항균 활성

주정현,이상덕,이정옥,오만진,이기춘 충남대학교 농업과학연구소 2002 농업과학연구 Vol.29 No.2

밀 단백질에 효소가수분해 할 때 생산되는 peptide의 항균활성과 천연항균제로서의 이용가능성을 검토하기 위하여 실험을 행하였다. 밀 단백질에 7종의 단백질가수분해효소를 작용시켜 생성된 가수분해물의 항균활성을 측정하고 한외여과, membrane filtration, HPLC를 이용하여 항균성peptide를 분리 정제한 후 분자량과 아미노산 결합 순서를 측정한 결과는 다음과 같다. 밀 단백질에 7종의 단백질 분해효소를 적용시켜 제조한 가수분해물중 Asp. saito protease를 적용시켜 얻어진 peptide 만이 항균활성을 나타내었다. Asp. saito protease는 37 ℃, pH 6.0에서 작용시킨 경우에 항균활성이 가장 높았으며, 50℃ 이상에서는 활성을 나타내지 않았다. 밀단백 효소가수분해물은 membrane filtration 에 의하여 분자량 1.000~3.000에서 항균활성이 나타났다. Membrane filtration으로 얻어진 항균활성분획을 HPLC로 분리한 결과 retention time 31.1~31.8 min에서 항균활성을 나타내었다. 밀단백 효소가수분해물은 121℃에서 15분간 가열하여도 효소활성이 유지되는 매우 안정한 화합물이었다. 항균활성분획을 MALDI-mass로 질량을 분석한 결과 1.633이었다. 항균성 peptide의 아미노산 결합순서는 cysteine, glycine, prolin, prolin, polin, valine, valine, alanine, alanine, arginine의 순서였다. This study was carried out to investigate whether peptide produced from wheat protein by enzyme hydrolysis can be used as a natural antimicrobial agent. Antimicrobial peptide was obtained form wheat protein by protease of 7 species. The produced antimicrobial peptide was purified through ultrafiltration membrane filtration and HPLC, and molecular weight and amino and sequence of the purified antimicrobial peptide were determined. Among hydrolysate produced from wheat protein by protease of 7 species, antimicrobial activity was observed for the peptide obtained from Asp. satio protease. The Asp. satio protease did production antimicrobial hydrolysate showing the highest antimicrobial activity at reaction condition of 37℃ and pH 6.0, but not at reaction condition above 50℃. Wheat protein hydrolysate was fractionated by membrane filtration and showed antimicrobial activity between molecular weight 1,000 - 3,000. The antimicrobial activity fraction obtained by membrane filtration was separated through HPLC and showed antimicrobial activity in the peak of retention time 31.1 - 31.8 min. Since after wheat protein protease hydrolysate was heated during 15 min at 121℃, antimicrobial activity was maintained we could be conviction as heat-stable peptide. Molecular weight of antimicrobial peptide identified by MALDI-mass was 1,633. Amino acid sequence of antimicrobial peptide was cysteine, glycine, prolin, prolin, prolin, valine, valine, alanine, alanine and arginine.

부산지역 중학교 체육시설 보유실태와 관리 · 활용에 관한 연구

양정옥,이상돈,이진동 신라대학교 교육과학연구소 2004 교육과학연구 Vol.- No.9

한의진단명과 진단요건의 표준화 연구 II (표준화 실례) : 2차년도 연구결과 중간 보고

양기상,최선미,최승훈,안규석,박경모,박종현,김성우,신승호,정우열,전병훈,고현,김정범,신상우,김성훈,김동희,권영규,엄현섭,장혜옥 한국한의학연구원 1996 한국한의학연구원논문집 Vol.2 No.1

The diagnostic requirements were suggested and explained regarding the systems of differentiation of symptoms and signs in the second year study of standardization and unification of the terms and conditions used for diagnosis in oriental medicine. The systems were as follows; - differential diagnosis according to condition of body fluid, differentiation of syndromes according to the state of qi and blood, differential diagnosis according to relative excessiveness or deficiency of yin and yang(氣血陰陽津液辨證) - differentiation of diseases according to pathological changes of the viscera and their interrelation - analyzing and differentiating of febrile diseases in accordance with the theory of the six channels(傷寒辨證) The individual diagnosis pattern was arranged by the diagnostic requirements in the following order : another name(異名), notion of diagnosis pattern, index of differentiation of symptoms and signs(辨證指標), the main point of diagnosis, analysis of diagnosis pattern(證候分析), discrimination of diagnosis pattern(證候鑑別), a way of curing a diseases(治法), prescription(處方), herb in common use(常用藥物), diseases appearing the diagnosis pattern(常見疾病), documents(文獻調査). This study was carried out on the basis of the Chinese documents and references.

상호운용성 지원을 위한 이동 에이전트 시스템 설계

정성옥,이정기,홍성표,송기범,이준 조선대학교 전자정보통신연구소 2002 電子情報通信硏究所論文誌 Vol.5 No.1

A mobile agent is a computer program that acts autonomously on behalf of a person or organization and that has the unique ability to transport itself from one system in a network to another. An agent system is a platform that can create, interpret, execute, transfer and terminate agents. But, most current mobile agent systems adopted their own architectures, being implemented in various ways. Since those agent systems provide different interfaces, agens created in one mobile agent system could not move to other agent systems perform their task. To solve this problem, interoperability becomes one of the important issues on mobile agent systems. The OMG(Object management Group) proposed: the MAF(Mobile Agent Facility) specification for the interoperability among heterogeneous mobile agent systems. The MAF specification contains MAFAgentSystem and MAFFinder interfaces, and defines agent management, code mobility and naming rule. In this paper, we propose an execution model that can execute mobile agents within an agent system and migrate them to a remote agent system as conforming MAF, and design the structure and functions of its agent system. Our model uses Java and CORBA ORB in its the implementation and exploits their characteristics appropriately. Specifically its agents beside its clients can spawn child agents and control other agents.