• The Korean Journal of Pain
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• 제13권1호
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• pp.84-88
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• 2000

Background: An increase in the maximum level of sensory blockade (MLSB) following an epidural top-up in combined spinal epidural anesthesia (CSE) may be achieved by a volume effect as the volume of local anesthetic compresses the dural sac, by a local anesthetic effect, or by a combination of both effects. This study was conducted to investigate the contribution of each of these effects. Methods: Sixty patients scheduled for lower limb surgery under CSE were randomly allocated to one of three groups of twenty patients each. Using the needle-through needle technique, all patients received a subarachnoid dose of 10 mg hyperbaric 0.5% bupivacaine. At 30 min after subarachnoid injection, an epidural top-up with saline 10 ml (group II) or 0.5% bupivacaine 10 ml (group III) was administered; patients in group I received no epidural top-up. The level of sensory blockade was assessed at 5, 10, 15, 20, 25, 30 min after subarachnoid injection and at 5, 10, 15, 20, 25, 30 min after epidural top-up. Results: There was no significant difference in the MLSB and the onset time of MLSB among group I-III. Conclusions: We concluded that the epidural top-up with saline 10 ml or 0.5% bupivacaine 10 ml which injected at 30 min after subarachnoid injection did not significantly increase the level of subarachnoid block in lower extremity surgical patients.

• 산업융합연구
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• 제22권2호
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• pp.135-141
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• 2024

본 연구는 한국 20~30대 건강검진 수검자들의 특성을 분석하고 수검에 영향을 미치는 요인을 분석하여 수검률을 향상시키기 위해 시도하였다. 연구대상 및 방법은 국민건강영양조사 제8기 2차년도(2020년) 국민건강영양조사를 활용하여 20세에서 30세 사이의 대한민국 거주 남녀 1,453명을 대상으로 하였으며, 건강검진 수진 여부를 인구사회학적요인, 건강행태요인, 정신건강요인, 의료이용요인으로 나누어 단순 로지스틱 회귀분석과 다중 로지스틱 회귀분석을 실시하였다. 분석결과 한국 20~30대 건강검진 수검에 영향을 미치는 요인은 교육수준, 결혼여부, 건강보험종류, 정규직 여부, 주관적 건강상태로 나타났다. 본 연구 결과는 20-30대 건강검진 수검율 향상의 기초자료로 활용할 수 있다.

• 전자공학회논문지A
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• 제32A권12호
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• pp.198-208
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• 1995

BiCMOS circuit consist of CMOS part which constructs logic function, and bipolar part which drives output load. Test to detect stuck-open faults in BiCMOS circuit is important, since these faults do sequential behavior and are represented as transition faults. In this paper, proposes a method for efficiently detecting transistor stuck-open faults in BiCMOS circuit by transforming them into slow-to=rise transition and slow-to-fall transition. In proposed method, BiCMOS circuit is transformed into equivalent gate-level circuit by dividing it into pull-up part which make output 1, and pull-down part which make output 0. Stuck-open faults in transistor are modelled as transition fault in input line of gate level circuit which is transformed from given circuit. Faults are detceted by using pull-up part gate level circuit when expected value is '01', or using pull-down part gate level circuit when expected value is '10'. By this method, transistor stuck-open faults in BiCMOS circuit are easily detected using conventional gate level test generation algorithm for transition fault.

• Journal of Information Display
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• 제2권2호
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• pp.32-38
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• 2001

PDP(plasma display panel) represents the gray levels by the pulse number modulation technique that results in undesirable dynamic false contours on moving images. This paper proposes a LUT(Look-up table) based error diffusion algorithm for reduction of the dynamic false contours. A quantitative measure of the dynamic false contours is defined first. The measure of the dynamic false contours is calculated through simulation of every gray level combination of two consecutive frames. Based on the calculated measures, a modified gray level for a pair of gray levels of two consecutive frames is chosen to reduce the dynamic false contours. The chosen gray levels serve as contents of a gray level conversion LUT. Given a pair of gray levels of two consecutive frames, the gray level of current frame is modified based on the gray level conversion LUT. The new gray level is displayed on PDP. An error diffusion algorithm is, then, applied to compensate for the differences in the gray levels.

• Environmental Engineering Research
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• 제19권4호
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• pp.317-329
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• 2014

The diversity of cyanobacteria in Sri Lanka was studied in different water reservoirs, paddy fields, brackish water and tsunami affected areas using light microcopy, 16S rRNA sequences, followed by phylogenetic analysis. Based on light microscopy, 24 genera were identified from environmental samples belonging to the orders Chroococcales, Oscillatoriales, Pleurocapsales and Nostocales. In cultures, 33 genera were identified from all five cyanobacterial orders, including Stigonematales. Based on 16S rRNA gene sequences and their morphology, two isolates were identified up to species level, 72 to genus level, one isolate up to family and 11 up to order level. Twelve isolates couldn't be assigned to any taxonomic level. The results of 16S rRNA gene sequences along with the phylogenetic analysis indicated that some cyanobacterial isolates could be accommodated to genus or order level. The 16S rRNA sequence analysis data in this study confirmed that order Nostocales and order Pleurocapsales cyanobacteria are monophyletic while orders Chroococcales, Oscillatoriales and Stigonematales cyanobacteria are polyphyletic. Polyphasic approach including the combination of light microscopy, cultures and the analysis of 16S rRNA gene sequences provide a promising approach to ascertain the diversity of cyanobacteria in different habitats.

• 대한치과의사협회지
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• 제55권1호
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• pp.22-29
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• 2017

Purpose : Preservation of the periodontal health of the treated patient requires supportive periodontal therapy for the elimination of periodontal disease. After Phase I therapy is completed, patients are placed on a schedule of periodic recall visits for maintenance care to prevent recurrence of the disease. The amount of tooth loss would be the most relevant criterion in an evaluation of the effect of periodontal treatment, but this would require studies with extremely long follow-up periods. Thus the most commonly used outcome criteria in clinical research have been clinical attachment level change, reduction of pocket depth and bleeding frequency. The purpose of this case study is to identify the effect of supportive periodontal therapy after periodontal flap surgery. Materials & Methods : Following routine hygienic phase of treatment, patients with chronic periodontitis received surgical periodontal treatment. Bleeding on probing, pocket depth and clinical attachment level were measured at baseline, pre-operation and 1 year follow up. All procedures were performed by one operator. Results : One year a total of 28 patients (58sites) to recheck remained, when conducted maintenance program after periodontal flap surgery was observed reduction of bleeding frequency, pocket depth and improvement of clinical attachment level. Conclusion : The results from this study indicate that supportive periodontal therapy after periodontal flap surgery is effective for reduction of bleeding frequency, pocket depth and gain of clinical attachment level.

• 한국초지조사료학회지
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• 제11권3호
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• pp.175-181
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• 1991

The purpose of this experiment was to evaluate the effects of shade and levels of N fertilization on the dry matter yield and chemical compositions of orchardgrass grown under floor of chestnut tree. Shading conditions consist of $S_0$, (full light), $S_1$, (about 6OC4 shade) and $S_2$, (about 70% shade). And, nitrogen fertilizer was applied at 3 levels, O($N_0$), 12($N_1$), and 30($N_2$) kg per 10a, respectively. The results are may be summarized as follows: 1. Maximum total dry matter yield of $S_0$, was obtained about 1.28 ton/lOa at $N_2$, level. But, total dry matter yields of N levels in $S_1$, and $S_2$, were decreased about 42-45% compared with $S_0$. 2. The response of the dry matter yield to N fertilization were differences between shading and levels of N. Thus, the dry matter yield of $S_1$, increased almost linear up to about 30 kg/l0a level, while the dry matter yield of S, was increased slightly up to 30 kgIl0a. But. $S_2$, was increased up to 12 kg/lOa and then decreased slightly with N fertilization over the 12 kg/l0a. 3. Average increase in total dry matter yield to N fertilization were 23.85 kg, 7.97 kg and 5.08 kg DM for $S_0$, $S_1$, and $S_2$, respectively. 4. The level of 12 kg N/lOa is the limiting N level to obtain dry matter production under 60-709 shading conditions. 5. The contents of crude protein arid nitrate nitrogen were increased with shading and incremental N fertilization up to 30 kg/l0a. But, water soluble carbohydrate content was decreased greatly with high shading and high levels of N. 6. Nitrate nitrogen content indicated highly significant positive correlation with crude protein, but significant negative correlation with water soluble carbohydrate content. 7. At 30 kg N level with $S_1$, was necessary to exceed the potentially toxic nitrate nitrogen level of 0.20%.

• 한국산학기술학회논문지
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• 제16권6호
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• pp.3858-3869
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• 2015

산업사회에 있어 시대의 화두는 창업인바 창업의 활성화는 새로운 직업을 창출함으로써 고용극대화와 경제전반에 걸친 활성화에 중요한 역할을 담당하고 있으며 그 유인책중 하나가 창업보육시스템이고 그 중심에 창업보육센터가 있다. 이에 본 연구는 창업보육센터 지원서비스의 질적 수준 도움정도가 만족도에 미치는 영향을 실증적으로 분석함으로써 창업보육센터의 효율적 운영방향과 정책방향을 수립하는데 기여하고 하나의 논의의 단초를 제공하고자 한다. 이를 위해 선행연구를 바탕으로 설문지를 개발하고 총500부의 유효 표본을 대상으로 연구를 진행하였다. 연구결과 창업보육센터가 입주기업이나 창업 준비자에게 제공하는 서비스 중 질적 수준과 도움정도는 센터 및 지원서비스에 대한 만족도에 유의한 영향을 주었으며 매니저의 역량과 관련기술특성은 만족도에 유의한 영향을 주는 것으로 나타났다.

• 한국수학교육학회지시리즈A:수학교육
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• 제52권4호
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• pp.531-547
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• 2013

The purpose of the study is to examine how effects of activities using Google SketchUp on students' spatial ability and 3D geometric thinking in measuring the volume of solid figures. By comparing the results from pre- and post-tests between the experimental group and control group, we found that activities using Google SketchUp help students improve their spatial ability in the spatial orientation and visualization. In addition, more than half students in the experimental group moved from level 4 up to level 7 in thinking process of measuring the volume in terms of Battista(2004)'s levels. This study suggests that the instruction with Google SketchUp can help to improve students' spatial ability and 3D geometric thinking in the regular class in middle school. In addition, SketchUp can be an advanced technological tool to support students' self-directed learning, which create an efficient educational environment and a great opportunity to learn geometry in an effective manner.

• Asian Journal of Innovation and Policy
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• 제6권1호
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• pp.45-57
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• 2017

This study aims to analyze the factors that could influence business decisions of in the commercialization of R&D when technology is transferred from government research institutes (GRIs) to small and medium-sized enterprises (SMEs). We examine 353 such cases of technology transfer. The dependent variable is whether the licensee had the intention of following up with R&D after the technology has been transferred. The independent variables, classified into ex-ante factors and ex-post factors, consist of the involvement of SMEs into GRI R&D, technology readiness level, relatedness to existing technologies, and contribution to sales revenue and level-up of existing technologies. The results of the study show that the contribution to existing technologies has a positive impact on R&D commercialization. However, unlike our expectation, contribution to sales revenue, the involvement of SMEs into GRI R&D, technology readiness level, the relatedness to existing technologies of the technology transferred have no impact on follow-up R&D.