• 대한기계학회:학술대회논문집
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• 대한기계학회 2000년도 춘계학술대회논문집B
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• pp.906-912
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• 2000

In this study, for the use of LFG, the burning velocities of LFG and LFG mixed fuels have been numerically analyzed. C3 reaction mechanism which consists of 92 species and 621 reaction was adopted in the calculation. The results show that the burning velocities of LFG and LFG mixed fuels are obtained as a function of $CH_4$ and LFG percentage at stoichiometric conditions. In addition, the correlations of burning velocities LFG and LFG mixed fuels were obtained over a wide range of the equivalence ratio. The comparison of burning velocity correlated from numerically calculated results with experimental ones shows good agreements. From these results, the suggested burning velocity correlations far LFG and LFG mixed fuels in this study can be applied to the practical utilization of LFG.

• 대한안전경영과학회지
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• 제4권2호
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• pp.83-101
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• 2002

In this thesis presents line balancing problems of two-sided and mixed model assembly line widely used in practical fields using genetic algorithm for reducing throughput time, cost of tools and fixtures and improving flexibility of assembly lines. Two-sided and mixed model assembly line is a special type of production line where variety of product similar in product characteristics are assembled in both sides. This thesis proposes the genetic algorithm adequate to each step in tow-sided and mixed model assembly line with suitable presentation, individual, evaluation function, selection and genetic parameter. To confirm proposed genetic algorithm, we apply to increase the number of tasks in case study. And for evaluation the performance of proposed genetic algorithm, we compare to existing algorithm of one-sided and mixed model assembly line. The results show that the algorithm is outstanding in the problems with a larger number of stations or larger number of tasks.

• 한국식품영양학회지
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• 제9권3호
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• pp.314-318
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• 1996

The purpore of this study was to elucidate the nutritional significance of the fruit-vegetable mixed juice during storage and distribution by examining the chemical composition of the mixed Juice for storage. The fruit-vegetable mixed Juices were sueriliged at 95$^{\circ}C$ for 30, 70, 100 seconds and the results of the changes in vitamin C contents, colors, total carotenoid contents, total aerobic counts and sensory evaluation of the mixed Juice were as follows: Vitamin C contents were drastically decreased at 7 day's storage and were not significantly different between the mixed Juices at p< 0.05 level after 7 day's storage. The longer the sterilization time and storage period of the mixed Juice was the higher changes in color was. The color changes in the sterilized samples were higher in order of 100, 70 and 30 seconds. Total carotenoid contents were slightly decreased according to storage period but were not affected by sterilization time. Total aerobic counts were 1.1 $\times$ 101 cfu/ml before sterilization, but it was negative after sterilization at 95t regardless of sterilization time. Sensory qualities such as color, flavor, taste and total acceptability of the mixed juice tended to be decreased by the Increased storage period and sterilization time. Especially, the sterilized sample for 100 seconds showed lots of changes In color.

• 한국환경과학회지
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• 제23권12호
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• pp.1971-1976
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• 2014

In this study, the photocatalytic decomposition characteristics of single toluene, toluene mixed with benzene, toluene mixed with acetone, and toluene mixed methyl mercaptan (MM) by UV reactor installed with $TiO_2$-coated perforated plate were studied. The photocatalytic decomposition rate of single toluene, toluene mixed with benzene, toluene mixed with acetone, and toluene mixed with MM fitted well on Langmuir-Hinshelwood (L-H) kinetics equation. The maximum elimination capacity was obtained to be $628g/m^3{\cdot}d$ for single toluene, $499g/m^3{\cdot}d$ for toluene mixed with benzene, $318g/m^3{\cdot}d$ for toluene mixed with acetone, and $513g/m^3{\cdot}d$ for toluene mixed with MM, respectively. The negative effect in photocatalytic decomposition of toluene are found to be in the order of acetone>benzene>MM.

• Journal of Mechanical Science and Technology
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• 제16권4호
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• pp.476-484
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• 2002

The aim of this study is to investigate the ductile fracture behavior under mixed mode (I/II) loading using SA533B pressure vessel steel. Anti-symmetric 4-point (AS4P) bending tests were performed to obtain the J-R curves under two different mixed mode (I/II) loadings. In addition, finite element analysis using Rousselier Ductile Damage Theory was carried out to predict the J-R curves under mixed mode (I/II) loadings. In conclusions, the J-R curves under. Mixed Mode (I/II) loading were located between those of Mode I and Mode II loading. When the mixity of mixed mode (I/II) loading was high, the J-R curve of mixed mode (I/II) loading approached that of pure mode I loading after some amount of crack propagation. In contrast with the above fact, if the mixity was low, the J-R curve took after that of pure mode II loading. Finally, it was found that the predicted J-R curves made a good agreement with the test data through the tuning procedures of $\beta$ values at the different mixed mode (I/II) loading.

• 한국정밀공학회지
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• 제22권6호
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• pp.152-158
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• 2005

The stress conditions acting on the practical structure are complex, and thus most cracks existing in the practical structures are under mixed-mode loading conditions. The effect of shear load component of mixed-mode loading acts more greatly in the stage of crack initiation and initial propagation than crack propagation stage. Hence, research on the behavior in the stage of crack initiation and initial propagation need to be examined in order to evaluate behavior of mixed-mode fatigue cracks. In this study, the crack tip displacement(CTD) was measured by using the direct measuring method(DMM). We examined the behavior at crack tip by determining crack opening load$(P_{op})$. From the test results, the propagation behavior of mixed-mode fatigue cracks was evaluated by considering mixed-mode crack closure. Also, we examined the characteristic of crack propagation under mixed-mode loading with crack propagation direction.

• 국토계획
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• 제53권6호
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• pp.5-18
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• 2018

While the zoning system has been developed based on the rationale of separated and specialized land uses to prevent negative externalities in the modern industrial era, the emergence of office-based new industries in the post-industrial era rather encourages mixed land uses to create agglomeration economies. This study aims to find historical basis to justify the reform of zoning system to promote both specialized and mixed land uses. When the zoning system was first introduced in Japanese colonial period by Chosun Planning Ordinance enacted in 1934, Special District within Manufacturing Area, and later within Residential, Commercial, and Mixed Areas respectively was institutionalized for specialized land uses, though it was not actually designated. When City Planning Law was enacted in 1962, Special District was substituted by Exclusive Areas (Exclusive Residential Area, Exclusive Manufacturing Area). Meanwhile Undesignated Area was designated for mixed land uses by Chosun Planning Ordinance, and later it was converted mostly into Mixed Area and partially into Green Area. Finally Mixed Area was substituted by Semi-Areas (Semi-Residential Area, Semi-Manufacturing Area) by City Planning Law in 1962. These demonstrate that Korean zoning system needs to revive the tradition that clearly promoted both specialized and mixed land uses.

• 한국실내디자인학회논문집
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• 제23권4호
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• pp.211-219
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• 2014

The internal streets of mixed-use commercial complexes, which are the extension of urban streets, are being changed from a mediating space aiming at movement to a staying-type space according to the change of mixed-use commercial complexes. And they function as a resting place of user with court and plaza, and act as an urban public space, and accommodate an activity arising from the gathering of many people. As a result, a role of new relaxation and community space is played in the center of the city. And the aspect of publicness is brought into relief. Hence, this study is intended to examine the characteristics that the internal streets of mixed-use commercial complexes have, and furthermore, it is intended to show the planning characteristics in the contemporary mixed-use commercial complexes. With regard to the method of research, first, space configuration and role of internal streets was examined according to the change of mixed-use commercial complexes on the basic of precedent research and literature review. And the internal streets of mixed-use commercial complexes were classified into doorway part, traffic line, and open space. And the characteristics of internal streets in the mixed-use commercial complexes through the concept of architectural 'publicness' were derived as accessibility, amenity, perceptibility, openness, connectivity and symbolism. The internal streets of mixed-use commercial complexes should be changed by the space planning to secure continuity with the city on the basis of accessibility and connectivity and to reinforce visual openness in the internal streets in order to improve amenity and perceptibility, accordingly the mixed-use commercial complexes will be also born again as symbolic public space in the city. Variously changing elements to improve publicness very importantly act on the planning of internal streets in the mixed-use commercial complexes, and therefore researches should be continuously carried out.

• Clinical Psychopharmacology and Neuroscience
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• 제16권4호
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• pp.376-382
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• 2018

We reviewed clinical studies investigating the pharmacological treatment of major depressive episodes (MDEs) with mixed features diagnosed according to the dimensional criteria (more than two or three [hypo]manic symptoms+principle depressive symptoms). We systematically reviewed published randomized controlled trials on the pharmacological treatment of MDEs with mixed features associated with mood disorders, including major depressive disorder (MDD) and bipolar disorder (BD). We searched the PubMed, Cochrane Library, and ClinicalTrials.gov databases through December 2017 with the following key word combinations linked with the word OR: (a) mixed or mixed state, mixed features, DMX, mixed depression; (b) depressive, major depressive, MDE, MDD, bipolar, bipolar depression; and (c) antidepressant, antipsychotic, mood stabilizer, anticonvulsant, treatment, medication, algorithm, guideline, pharmacological. We followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. We found few randomized trials on pharmacological treatments for MDEs with mixed features. Of the 36 articles assessed for eligibility, 11 investigated MDEs with mixed features in mood disorders: six assessed the efficacy of antipsychotic drugs (lurasidone and ziprasidone) in the acute phase of MDD with mixed features, although four of these were post hoc analyses based on large randomized controlled trials. Four studies compared antipsychotic drugs (olanzapine, lurasidone, and ziprasidone) with placebo, and one study assessed the efficacy of combination therapy (olanzapine+fluoxetine) in the acute phase of BD with mixed features. Pharmacological treatments for MDEs with mixed features have focused on antipsychotics, although evidence of their efficacy is lacking. Additional well-designed clinical trials are needed.

• 한국콘텐츠학회논문지
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• 제13권6호
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• pp.507-517
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• 2013

경제적 수준의 향상과 급속한 사회적 변화에 따라 국민들의 복지욕구가 다양화되면서 문화, 의료, 정신과 정보 차원으로 확대된 국민들의 종합적인 서비스에 대한 욕구가 변화하고 있다. 따라서 미래에는 작은 단위의 지역사회를 중심으로 주민의 행정, 복지, 여가, 문화, 정보화 요구를 수용하는 공간인 통합적 공동체복합지원시설의 구축이 필요하다. 공동체 복합지원시설은 지역주민들이 가장 손쉽게 접할 수 있는 만남의 장으로서 정보 교환을 비롯한 다양한 기초적인 서비스를 제공, 궁극적으로 주민들의 공동체 생활의 활성화에 기여하여 기존 도심의 재생과 활성화를 이루는데 이바지하여야 한다. 이에 본 연구는 공동체복합지원시설의 일반적 현황과 물리적 복합 형태를 파악하고 복합유형을 도출, 공간특성을 분석하였다. 현재 공급되고 있는 시설들은 이용자들 모두가 참여 할 수 있는 프로그램과 복합기능을 수용 수 있는 시설이 대체적으로 부족하다. 앞으로 계획되어질 공동체복합지원시설은 프로그램과 복합기능을 모두 수용 할 수 있는 시설을 우선하여 공공행정시설이나 장애자 시설, 노인시설을 같이 배치하여 혐오시설로 느껴지지 않도록 배려하여, 서로 교류하는 공동체 삶을 추구하도록 시설의 설계단계부터 방법 또한 필요하다고 보여 진다. 창의적인 복합개념이 도입되어 이동에 소요되는 시간과 비용을 이용자들에게 돌려줌으로써 여러 가지 기회를 부가적으로 제공받음과 동시에 다양한 삶이 확보 되어야 할 것이다. 지역의 고유한 특성이 반영이 되고, 이용자의 다양성을 고려하고, 사회적 변화에 순응과 변화를 동시에 기능할 수 있는 복합화가 되어야 할 것이다. 본 연구는 한계로는 조사 분석만으로 도출된 결과로 보편성에서 다소 미흡하다 할 수 있지만 공동체복합지원시설이 지역주민의 생활여건이나 현실적인 요구에 대응할 수 있는 공동체복합지원시설 복합화 계획을 위한 기초연구자료로서 활용 될 수 있을 것이라 판단된다.