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      • KCI등재

        한국인 치과의사의 비스포스포네이트 관련 악골괴사에 대한 인식 연구

        박용(Yong-Duck Park),김영란(Young-Ran Kim),김덕윤(Deog-Yoon Kim),정윤석(Yoon-Sok Chung),이정근(Jeung-Keun Lee),김여갑(Yeo-Gab Kim),권용대(Yong-Dae Kwon) 대한구강악안면외과학회 2009 대한구강악안면외과학회지 Vol.35 No.3

        '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

        Recently, an increasing number of bisphosphonate related osteonecrosis of the jaw(BRONJ) is being reported. A guideline has been already established in the US, but it does not seem to be fully recognized by clinicians in Korea. Therefore, a survey study was done to inform and have clinicians realize the seriousness of BRONJ. 1,341 practitioners were randomly selected out of 13,405 practitioners(by Feb of 2008, KDA) in Korea. A questionnaire was given to them between May to July in 2008. Questions were designed to investigate each respondent’s experience term years in the clinic, occupation, speciality, awareness on risk of bisphosphonate, experience on treating osteonecrosis patients, awareness about the guideline on BRONJ suggested by AAOMS and whether if they ask about bisphosphonate medication history to patients before invasive treatment. 45.1% of the clinicians have reported on experiencing delayed healing on bone exposed site after extraction both in the maxilla and the mandible. However, clinicians have asked the patients whether if they are on bisphosphonate or not in only 15.1% of these cases. 56.5% of the clinicians simply knew about BRONJ but only 28.9% of the clinicians were aware that bisphosphonate can cause osteonecrosis after invasive dental treatment. Only 19.3% knew about the contents of guideline on BRONJ and 57.2% were aware of the seriousness of BRONJ. Clinicians with shorter clinical experience term were more aware of BRONJ and the guideline on BRONJ than the experienced clinicians. But awareness of the possibility of BRONJ after invasive dental treatment were about the same regardless of their clinical experience. The results show that Korean clinicians need to be more aware about BRONJ. Data on BRONJ cases in Korea should be collected and provided with additional education to let Korean clinicians know and be more aware about BRONJ.

      • Afreeca 인터넷 방송 서비스에서의 사용자 행동 분석

        박용(Yongdeok Park),박건우(Kunwoo Park),권태경(Taekyoung Kwon),최양희(Yanhee Choi) 한국정보과학회 2008 한국정보과학회 학술발표논문집 Vol.35 No.1

        광대역 통신망의 발달과 더불어 정보통신 및 디지털 영상 기기의 대중화로 인해 텍스트 및 사진 위주의 정보 전달과 달리 소리와 영상을 기반으로 한 멀티미디어 정보 전달이 우리 생활 속의 일부로 자리 잡고 있다. 이러한 멀티미디어 정보 전달에 있어 트래픽 분산을 위한 P2P(Peer to Peer) 방식의 실시간 스트리밍 서비스에 대해 많은 연구가 있었다. 본 논문에서는 "사용자"를 중심에 두고 사용자의 서비스 이용에 대한 패턴을 파악하기 위해 사용한 "Afreeca" 인터넷 방송서비스와 사용자 패턴 수집 방법에 대해 설명한 다음, 수집된 결과를 이용하여 컨텐츠 특성별 사용자 패턴의 차이와 특징을 분석해 보았다.

      • KCI등재후보

        수송용 석유류 조세체계 현황과 적정개편 방향

        박용(Yongduk Pak),마용선(Yong-Sun Ma) 에너지경제연구원 2007 에너지경제연구 Vol.6 No.2

        본 연구는 유류세 조정을 통한 세수변화와 세수보전 방안을 중심으로 수송용 석유류 조세체계 개편의 경제적 파급효과를 분석하였다. 에너지세제개편에 따른 파급효과의 구체적 분석을 위해서 수송용 석유류의 가격탄력성을 추정한 결과, 단기탄력성의 경우 휘발유가 -0.538로 가장 높게 나타났으며, 경유는 -0.377로 휘발유보다 조금 낮게, LPG는 -0.027로 탄력성이 매우 낮게 나타났다. 수송용 석유류 조세체계 변화로 인한 중요한 파급효과는 세수의 감소인데, 세율 10% 인하시 휘발유는 리터당 82원이 하락하여 5,660억 원, 경유는 58원이 하락하여 8,733억 원, LPG(부탄)는 20원이 하락하여 1,416억 원의 세수 감소가 예상되어 총 1조 5,809억 원 정도의 세수손실이 예상된다. 또한 탄력세율 30% 인하를 적용하여 유류세율을 인하하는 경우 세율 인하폭이 보다 확대되어 총 1조 8,259억 원 정도의 세수손실이 예상된다. 이러한 세수 감소를 보전하기 위한 방안으로는 유사휘발유의 제조에 사용되는 용제 과세, 발전용 연료 과세, 유연탄에 대한 수입부과금 부과 등이 제시될 수 있다. 용제 과세는 4,550억 원~9,850억 원의 세수보전이 가능할 것으로 예상되며, 발전용 연료 과세는 부과 방식에 따라 788억 원~6,067억 원 정도가, 유연탄 수입부과금 부과는 톤당 3,000원을 기준으로 2,428억 원 정도의 세수보전이 가능한 것으로 예상된다. 결국 본 연구를 통해 수송용 석유류 조세체계의 적정 개편 방향을 모색해 본 결과 현대 논의되고 있는 유류세 인하를 실제로 추진하는 경우 세수보전 방안에 대한 보다 심도 있는 연구의 선행이 절실히 요구되는 것으로 판단된다. The main purpose of this study is to find out what is economic impact of the lower tax rate and the compensation options of lower tax revenue. At first, this study evaluated the economic impact of 1st and 2nd Energy Taxation Reform. First Reform seemed to achieve the reform target such as energy price mechanism, energy conservation, reliable support system. Second Reform also appeared to be successful in lower the diesel consumption. The estimation results of price elasticity of demand for transportation oil product showed us low elasticities such as -0.538 for gasoline, -0.377 for diesel, and -0.027 for LPG. There are currently two options for lower tax rate on transportation oil products. The first option is 10% reduction of current transportation tax rate, which results in the net reduction of tax revenue is 1,581 billion won. The second option is 30% reduction of initial tax rate, which results in 1,826 billion won lower tax revenue. To compensate this loss, we can have three options. The first option is the imposing of transportation tax on solvent, which is main component of fake gasoline. The expected loss from tax evasion of fake gasoline is between 455~985 billion won, which can be compensation to lower transportation tax revenue. The second one is the imposing tax on fuels for power generation, which results in 79~607 billion won additional tax revenue. The third one is the imposing tax on bituminous coal, which produces additional tax revenue of 243 billion won. In conclusion, the promotion of lower transportation taxation scheme must accompany the intensive study on tax revenue compensation options.

      • KCI등재

        전국치기공과의 교과과정분석과 전망

        박용,황경숙,김남중 대한치과기공학회 2003 대한치과기공학회지 Vol.25 No.1

        The 3 year graduate school course of the dental technician, which has been enforced since 1994till the present date, differs from the currently existing 2 year graduate course because of an 8weeks clinical field training course being newly executed and an imposed curriculum aboutmanufacturing specialized prosthetics like all-ceramic, double prosthetic technology, attachment,and implant. Even though nearly 10 years have passed, the education program of the 18 collegeshave still not been standardized and the subjects differing a little, while some are still not followingthe 3 years graduate course.The goal of this research is to emphasize the qualities of the 3 years graduate program andenable the dental technician to handle clinical models in the dental technical clinic right aftergraduation by adding clinical field training in the dental technician education program of the 18colleges. Also in accordance to a national and international increase in esthetical prosthetics,credits, weekly study hours, education practice time of specialized prosthetic dental technology canbe analyzed as follows.1. In the year 2003, currently colleges start clinical practice education starting from the 1stsemester of the 2nd year junior year, to the 2nd semester of 3rd year the varying in time withadequate class time, and credits. The average credit is 9.56, and weekly average class time is 18.00 hours. later clinical trainee education will be adjusted to the 3 year graduate school course to 10credits and 20 hours and the adequate education period should be the 2nd semester of 3rd gradewhen most basic clinical education has been covered.2. Currently in the year 2003, all-ceramic education has an average credit of 8.01 in 17 collegeswith an exception of Ma-san college. The weekly average theoretical education is 4.94 hours,weekly clinical education of 7.88 hours and currently in 14 colleges porcelain technical classusually starts in the 1st semester of the 2nd year. All-ceramic education is thought to have adequatecredits, timing, and weekly study hours.3. Currently in 2003 implant education is enforced in 11 colleges including Bu-san Catholicuniversity and the education period is usually in the 3rd year. Out of the 11 colleges, only Bu-sanCatholic univ., Ma-san and Shinheung college have practice training classes. We knew that Shingu,Dongu, Mokpo science colleges have practice training as a curriculum, namely specific prostheticslaboratory. Out of the 9 colleges enforcing implant education the average credits taken are 2.56,and the average hours of weekly theory education is 2.14, but with the exception of Shinheungcollege which has an implant practice training course theory and practice classes are not divided.Therefore implant education is thought to start in the 3rd year as a 3 credit course with 3 hours oftheory and practice each.4. Currently in 2003, theoretical attachment education is given in 15 colleges and includingpractical training it is given in 10 colleges. The education starts 1st semester of the 2nd year till the2nd semester of the 3rd year. The average credit of attachment theory education in the 15 collegeswas 3.64, the average weekly theoretical education was 2.64, and the average weekly practicetraining out of the schools teaching it was 3.20. Later attachment education is thought to start the1st semester of the 3rd year as a 3 credit course with 2 hours of theory class and 3 hours of practicetraining. 5. Double prosthetic technology is currently carried out in Dae-jon Health Science college(2ndyear 2nd semester, 2 credits, theory 2hours), Gimcheon college (1 credit, 2 hours of practicaltraining), Bu-san Catholic university (4th year 2nd semester, 4 hours of theory. practice). When the3 year course is enforced, education will start 1st semester of the 3rd year with 2hours of theoryand practice each. 6. The newly installed programs of the 3 year education is clinical field training, and specializedprosthetic manufacturing practice like all-ceramic, double prosthetic technology, attachment, andimplant. If such education is to be effectively managed, a primary precursor as systemic basicclinical education is thought to be important. 7. Nationally in the 18 colleges of dental technology the currently executed curriculum coursehad varying subjects, class time according to the subject, and credits by each college. Thecurriculum difference between the colleges must be settled.

      • KCI등재

        Calcium Carbonate and Sodium Chloride for Preventing Dentin Hypersensitivity and Gum Diseases

        박용,안효광,권하정,김찬호,채상균,김유진,김대경,김왕기,황경숙 대한예방치과학회 2014 International Journal of Clinical Preventive Denti Vol.10 No.2

        Objective: The purpose of this study was to test the efficacy and safety of dentifrice containing sodium alginate, fine calcium carbonate and sodium chloride which has effects of reducing dental hypersensitivity and anti-inflammatory effects. Methods: Human dentin specimens obtained from extracted molars were embedded with an acrylic resin and etched with citric acid. The Specimens were stored in phosphate buffered saline buffer before being brushed 1 minute only with test dentifrices. Samples were analyzed by scanning electron microscopy. In clinical tests, 41 Korean adults brushed with distributed dentifrice for three month the run-in period of two weeks. The improvements were compared between control and experimental groups using mixtures with sodium alginate, calcium carbonate and sodium chloride in different concentrations. Results: The efficacy of dentin occlusion of dentin tubules rises as Na-alginate and calcium carbonate contents increase. The occlusion efficacy in the experimental dentifrice is 5 times better than the control. Over three-month period, the test group showed 64.4% improvements based on the initial value and 86.5% improvements compared to the control group in the reduction of dentin hypersensitivity (p<0.05). In the gingival index, the test group showed 38.1% improvements based on the initial value and 76.7% improvements compared to the control group (p<0.05). Conclusion: The ingredients of sodium alginate and calcium carbonate to reduce dentin hypersensitivity and sodium chloride and cetylpyridinium chloride to prevent gingivitis were indeed effective in protecting sensitive gingival. No side effects were found throughout the whole body including the oral cavity of the subjects.

      • KCI등재

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