• Journal of Sericultural and Entomological Science
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• v.32 no.1
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• pp.31-37
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• 1990

For fine-denier cocoon filament production, the precocious trimolting silkworms were induced by the treatments with both the imidazole compound "KK-42" hating anti-juvenile hormone activity and high temperature, and their growth, dietary efficiency, cocoon and cocoon filament qualities were compared with those of normal tetramolters as control. 1. The percentage of precocious trimolters was higher in the application of KK-42 than the treatment of high temperature. The effective concentration of KK-42 was 10$\mu\textrm{g}$/1arva. The high temperature treatment for 48 hour was more effective than 36 hour treatment, and silkworm larvae fed on mulberry leaves were more sensitive than artificial diet to induce trimolters. 2. The larval duration of the trimolters induced by KK-42 was 5.17 day shorter than that of normal tetramolters in mulberry leaves rearing, and the increasing pattern of body weight in the 4th inster larvae of trimotlers was similar to the 5th instar larvae of normal tetramolters. 3. The qualities such as cocoon weight, cocoon layer weight and cocoon layer ratio of precocious trimolter induced by KK-42 were much lower those of normal tetramolters: the cocoon weight and cocoon layer ratio were 0.78g, 14.2cg and 18.4% in mulberry leaves rearing, and 0.86 cg, 10.3cg and 12.3% in artificial diet rearing, respectively. 4. The size of cocoon and cocoon filament was smaller in the precocious trimolter, both KK-42 and high temperature, as compared with that of the normal tetramolters. 5. The efficiency of cocoon layer production of the precocious trimolters by the KK-42 was lower than that of the normal tetramolters: amount of the cocoon layer production per 1g of dry mulberry leaves ingested was 7.97cg in the precocious trimotors, while 9.20cg in the normal tetramolters.

• Proceedings of the Korea Contents Association Conference
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• 2005.11a
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• pp.153-160
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• 2005

It is within bounds to say that the mood expressed in the Scenes of 3D Animation influences by mostly setting up of 3D CG lighting. Tn the context of CG, lighting is the process of illuminating digital scenes in an artistic and technical manner so the audience can perceive what the director intends to display on the screen with the appropriate clarity and mood. The lighting has the role of making the scenes beautiful and harmonious as an aesthetics of light and color created and controlled by people. It can be also stylized in symbolic and metaphorical methods environmental mood which we pursue to expose and story which we want to express. It thus appears that the concept of lighting style is intimately related to the particular context and art direction of animation film. But unfortunately, there are no foolproof formulas to the process of lighting a scene. In short, the lighting contributes to define the style of the scene as a conditional lighting setups' elements including position, color, intensity, shadow's area and scope. But at the same time, we must not overlook the artistic aspects that the lighting might suggest over all moods the animation genre and the style of scene like tranquility, suspense, and high-drama.

• Journal of Yeungnam Medical Science
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• v.32 no.2
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• pp.90-97
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• 2015

Background: Contrast-induced nephropathy (CIN) can cause serious adverse effects. To reduce the occurrence of CIN related computed tomography (CT) in emergency patients, we assessed the respective roles of serum creatinine (SCr) alone and estimated glomerular filtration rate (eGFR) as an early predictor for CIN related CT. Methods: For patients with SCr <1.5 mg/dL who underwent CT in emergency department (ED) between September 2012 and October 2013, we assessed the prevalence of CIN and its adverse effects. The Modification of Diet in Renal Disease Study (MDRD) and Cockcroft-Gault (CG) formula was used for the calculation of eGFR. Practical calculation was performed by electronic medical record (EMR) system for MDRD and internet calculating service for CG. And we investigated the prevalence of CIN in eGFR $<60mL/min/1.73m^2$ before CT. Results: A total of 1,555 patients were enrolled. The prevalence of CIN after CT was 4.6% and it showed correlation with renal deterioration, increased in-hospital mortality, and prolonged hospitalization. Despite baseline SCr <1.5 mg/dL, among enrolled patients, 11.3% as MDRD equation and 29.5% as CG formula were $<60mL/min/1.73m^2$ and in this condition, the prevalence of CIN was significantly high (odds ratio was 2.87 [1.64-5.02] as MDRD equation and 2.03 [1.26-3.29] as CG formula). Conclusion: Just SCr <1.5mg/dL was not appropriate to recognize preexisting renal insufficiency, but eGFR using MDRD equation was useful in predicting the risk of CIN related CT in ED. Using EMR, calculation of eGFR can be easier and more convenient.

• Journal of Acupuncture Research
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• v.19 no.3
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• pp.95-106
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• 2002

The present study was designed to investigate the effects of various electroacupuncture(EA) stimulation on NADPH-diaphorase and Neuropeptide Y(NPY) in the cerebral cortex of Sprague-Dawley Rats. We evaluated the changes of NADPH-d-positive neurons using a histochemical method and the changes of NPY-positive neurons using a double labeling immunohistochemical method. The staining intensities of NADPH-d-positive neuron and NPY-positive neurons were assessed in a quantitative fashion using a microdensitometrical method based on optical density by means of an image analyzer. As to frequency, the optical density of NADPH-d-positive neurons of 2Hz-1 time EA group was significantly higher than that of 100Hz-1 time EA group in M1, Cg, and that of 100Hz-3 times EA group was significantly higher than that of 2Hz-3 times EA group in Vi, Au, Cg and Ins. As to treatment-time, the optical density of NADPH-d-positive neurons of 2Hz-1 time EA group was higher than 2Hz-3 times EA group in Vi, Au, Cg and Ins. And in Vi 100Hz-1 time EA group and in M1 100Hz-3 times EA group was more efficient. As to frequency, the optical density of NPY-positive neurons of 2Hz-1 time was significantly higher in Vi, and that of 100Hz-1 EA group was higher in M1. And that of 2Hz-3 times EA group was higher than 100Hz-3 times EA group in Cg. As to treatment-time, the optical density of NPY-positive neurons of 2Hz-1 time EA group was significantly higer than 2Hz-3 times EA in S1, Vi, Au. And that of 100Hz-1 time EA group was significantly higher than that of 100Hz-3 time EA in Cg. The present results demonstrated that EA changes the activity in NO and NPY system in the cerebral cortex of SHR and EA stimulation, like frequency and treatment-time, is of importance for this effect.

• Electronics and Telecommunications Trends
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• v.20 no.4 s.94
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• pp.3-15
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• 2005

최근 흥행에 성공을 거둔 대부분의 영화는 첨단 CG 기술을 제작 공정의 50% 이상 활용하고 있으며 점차 영상 콘텐츠 제작에 CG 기술 사용 비율이 증가하는 추세이다. 본 논문에서는 ETRI 디지털 콘텐츠 연구단에서 연구 개발중인 실사 수준의 디지털 영상콘텐츠 제작기술에 관해 소개한다. 개발 기술은 현장 요구가 많은 대표적인 CG 기술인 영상기반 모델링, 영상기반 렌더링, 디지털액터 표현, 디지털액터 상호작용, CG/실사합성 기술을 포함한다. 엑스트라급 디지털액터 및 디지털 환경 제작 도구를 개발하였으며, 최종적으로는 주연급 디지털액터 및 디지털 환경 제작 도구를 개발할 예정이다.

• The Journal of Advanced Prosthodontics
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• v.12 no.4
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• pp.225-232
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• 2020

PURPOSE. This study aimed to fabricate provisional crowns at varying build directions using the digital light processing (DLP)-based 3D printing and evaluate the marginal and internal fit of the provisional crowns using the silicone replica technique (SRT). MATERIALS AND METHODS. The prepared resin tooth was scanned and a single crown was designed using computer-aided design (CAD) software. Provisional crowns were printed using a DLP-based 3D printer at 6 directions (120°, 135°, 150°, 180°, 210°, 225°) with 10 crowns in each direction. In total, sixty crowns were printed. To measure the marginal and internal fit, a silicone replica was fabricated and the thickness of the silicone impression material was measured using a digital microscope. Sixteen reference points were set and divided into the following 4 groups: marginal gap (MG), cervical gap (CG), axial gap (AG), and occlusal gap (OG). The measurements were statistically analyzed using one-way ANOVA and Dunnett T3. RESULTS. MG, CG, and OG were significantly different by build angle groups (P<.05). The MG and CG were significantly larger in the 120° group than in other groups. OG was the smallest in the 150° and 180° and the largest in the 120° and 135° groups. CONCLUSION. The marginal and internal fit of the 3D-printed provisional crowns can vary depending on the build angle and the best fit was achieved with build angles of 150° and 180°.

• Proceedings of the Korea Contents Association Conference
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• 2015.05a
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• pp.327-328
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• 2015

디지털시대에서 미국카툰시장은 3D 디지털 기법을 충분히 활용하여 마치 실사 같은 영화(Photo realistic movie)를 제작하는 한편. 일본의 경우는 그들만의 독특한 전통 셀 애니메이션(cell animation) 형식을 3D CG 기술과 결합하여 새로운 제작방식의 애니메이션을 제시하고 있다. 본 연구는 일본 2D 애니메이션에서 제작 방식을 유지해야 할 당위성을 카툰 렌더링 3D의 제작방식에 도입하여, 융합한 사례 분석을 통해 2D 애니메이션의 필요성과 중요성을 제시하려 한다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.05a
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• pp.656-659
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• 2012

In general, images captured by the color filter array are compressed after applying demosaicking process. Since this process introduces data redundancy which can reduce coding efficiency, several methods have been proposed to address this problem. While some conventional approachs convert color format to GBR or YUV 4:2:2 format, we propose to use the YCoCg 4:2:2 format to carry out compression. The proposed method shows an average bits reduction of 3.91% and PSNR increase of 0.04dB compared with H.264 YUV 4:2:0 intra-profile prediction method.

• Asian Pacific Journal of Cancer Prevention
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• v.14 no.5
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• pp.2949-2954
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• 2013

Background: This study was conducted to determine the relationship between lifestyle behavior and quality of life (QoL) among cancer survivors in Korea. Materials and Methods: Data for a total of 471 (173 men, 298 women) cancer survivors (CS) over 40 years old were obtained from the database of the $4^{th}$ Korean National Health and Nutrition Examination Survey (KNHANES IV). An identical number of subjects of the same age, sex, and education who had no restrictions in physical activity were randomly selected from the database and represented the control group (CG). Drinking, smoking, and exercise behavior were assessed. Results: The number of heavy drinkers was lower in CS (9.4%) than in CG (15.8%) (p<0.01); similarly, there were fewer smokers in CS (9.1%) than in CG (14.0%) (p<0.05). The percentage of individuals engaging in vigorous, moderate, and low-intensity exercise did not differ between CS (13.6%, 14.7%, and 50.0%) and CG (14.3%, 13.4%, and 49.7%, respectively). No differences in Euro QoL Questionnaire 5-Dimensional Classification (EQ-5D) scores on both drinking and smoking behaviors were noted. Compared to the non-exercisers, the low-intensity exercisers in CG ($0.91{\pm}0.10$ vs. $0.94{\pm}0.09$), vigorous-intensity exercisers in CS ($0.84{\pm}0.62$ vs. $0.91{\pm}0.11$), and low-intensity exercisers in CS ($0.82{\pm}0.22$ vs. $0.88{\pm}0.13$) scored higher on the EQ-5D. Conclusions: Although cancer survivors practiced more conscious health behavior in drinking and smoking, their engagement in exercise did not differ from that of non-cancer survivors. Since exercise engagement increases QoL in general, implementation of an educational program that promotes exercise engagement in cancer survivors may be required.

• Journal of Korea Multimedia Society
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• v.9 no.3
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• pp.265-278
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• 2006

This paper presents a two-dimensional type inheritance hierarchy index(2D-THI) for XML databases. XML Schema is one of schema models for the XML documents supporting. The type inheritance. The conventional indexing techniques for XML databases can not support XML queries on type inheritance hierarchies. We construct a two-dimensional index structure using multidimensional file organizations for supporting type inheritance hierarchy in XML queries. This indexing technique deals with the problem of clustering index entries in the two-dimensional domain space that consists of a key element domain and a type identifier domain based on the user query pattern. This index enhances query performance by adjusting the degree of clustering between the two domains. For performance evaluation, we have compared our proposed 2D-THI with the conventional class hierarchy indexing techniques in object-oriented databases such as CH-index and CG-tree through the cost model. As the result of the performance evaluations, we have verified that our proposed two-dimensional type inheritance indexing technique can efficiently support the query Processing in XML databases according to the query types.