• Korean Journal of Child Studies
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• v.35 no.6
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• pp.65-78
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• 2014

The purpose of this study was to examine the relationships between preschooler's sex, effortful control, working memory, and emotion regulation. The moderating effect of sex in the influences of effortful control and working memory on emotion regulation was also investigated. Eighty-eight children from the ages of 3 to 5 years participated in this study. A working memory task of the Korean Wechsler Intelligence Scale for Children IV(K-WISC-IV; Kwak, Oh, & Kim, 2011) was administered to the children. Their parents completed a very short form of the Children's Behavior Questionnaire(Putnam & Rothbart, 2006) and Emotion Regulation Checklist(Shields & Cicchetti, 1997). The results indicated that effortful control significantly predicted emotion regulation. Additionally the moderating effect of sex on the relationship between working memory and emotion regulation was significant. Specifically, the influence of working memory on emotion regulation was significant only in boys, but not in girls. This result suggested that effortful control has an effect on emotion regulation in a stable manner whereas working memory has different effects on the influence of emotion regulation according to sex.

• Genomics & Informatics
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• v.11 no.3
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• pp.102-113
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• 2013

Metagenomics has become one of the indispensable tools in microbial ecology for the last few decades, and a new revolution in metagenomic studies is now about to begin, with the help of recent advances of sequencing techniques. The massive data production and substantial cost reduction in next-generation sequencing have led to the rapid growth of metagenomic research both quantitatively and qualitatively. It is evident that metagenomics will be a standard tool for studying the diversity and function of microbes in the near future, as fingerprinting methods did previously. As the speed of data accumulation is accelerating, bioinformatic tools and associated databases for handling those datasets have become more urgent and necessary. To facilitate the bioinformatics analysis of metagenomic data, we review some recent tools and databases that are used widely in this field and give insights into the current challenges and future of metagenomics from a bioinformatics perspective.

• Korean Journal of Ichthyology
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• v.12 no.1
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• pp.20-24
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• 2000

The blenniid fish, Istiblennius dussumieri (Valenciennes) was reported on the basis of six specimens collected from rocky shores on the Yokonami Peninsula, Kochi Prefecture, southern Japan. This species was characterized by wavy, dusky stripes on its dorsal fin, 14 pectoral fin rays, 38 to 42 vertebrae, branched supraorbital cirrus, finger-like nasal cirrus, seven to ten vertical, dark bands on the body and canines absent on both jaws. Although the occurrence of this species may be due to larval transport by the Kuroshio Current, this is the first record of I. dussumieri from Japan represents a remarkable northern range extension of the species in the western Pacific Ocean.

• The Journal of Korean Medicine
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• v.22 no.2
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• pp.102-108
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• 2001

목적 : 단순포진바이러스로 유발한 베체트병 마우스 모델에서 가미청혈보혈탕과 가미 용담사간탕을 colchicine과 함께 투여할 경우, 한방 혹은 양방 단독 투여의 경우와 비교하여 베체트병 증상의 호전에 어떠한 영향을 주는지 알아보고자 하였다. 방법 : colchicines, 가미 청혈보혈탕, 가미용담사간탕을 각각 또는 colchicines+가미 청혈보혈탕, colchicines+가미용담 사간탕을 20일간 복합 투여하여 베체트 증상이 호전되는 정도를 살펴보고, 호전 되는 증상의 종류를 파악하고, 이때 동반되는 싸이토카인을 RT-PCR, FACS등으로 확인하고자 하였다. 결과 : 단독투여군보다 복합투여군에서 증상이 호전되는 율이 높았으며, 호전 시기를 앞당겼고, 이때 싸이토카인 interteukin-4의 발현이 증가하였다. 결론 ; 베체트병 마우스 모델에서, 양방과 한방의 복합투여가 단독투여보다 증상의 호전에 보다 더 효과적이었다.

• Journal of muscle and joint health
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• v.27 no.2
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• pp.81-93
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• 2020

Purpose: We developed and tested the effects of a care program for dementia patients among community- dwelling older adult men. Methods: This study used a non-equivalent control group pre-and post-test design. To verify the effectiveness of the care program for dementia patients, 26 community dwelling older adult men participated in this study. We used multiple intervention strategies including improving understanding of dementia through education, activities for dementia prevention, and promoting psychological change. In particular, based on the current understanding of the care of the men older adults, we used strategies to promote motivation and reinforce strengths. Results: After completing the 6-week intervention program, when compared with the control group, older adult men in the care program intervention group showed significant differences in scores for the following: cognitive functions (p=.035), attitude toward dementia (p=.026), preventive behavior (p=.007), geriatric depression (p=.013), caring confidence (p=.018), and self-esteem (p=.013). Conclusion: These results indicate that the care program for dementia patients has positive effects on increasing their cognitive function, attitude toward dementia, preventive behavior, caring confidence, self-efficacy, and on decreasing depression rates in this population. Based on this, we can recommend this program to men caregivers for the improved care of dementia in community centers.

• Journal of the Korean Society of Propulsion Engineers
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• v.24 no.2
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• pp.61-72
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• 2020

Performance characteristics of propulsion systems applied to UAVs that under development or completed in foreign countries were analyzed. In this study, aircraft mission and performance characteristics of ten UAVs were reviewed and compared with current available civil and military aircraft. Also performance characteristics of UAVs propulsion systems were summarized and engine design parameters were analyzed. Thrust, SFC and design parameters such as pressure ratio and bypass ratio of UAV propulsion system were compared with the current existing civil and military aircraft engines. From this study, the design parameters of the propulsion system applied to the UAV were well understood.

• Bulletin of the Korean Chemical Society
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• v.35 no.7
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• pp.2130-2134
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• 2014

A kinetic study is reported on nucleophilic substitution reactions of 4-nitrophenyl isonicotinate (7) with a series of cyclic secondary amines in MeCN. The plots of $k_{obsd}$ vs. [amine] curve upward for the reactions with weakly basic amines (e.g., morpholine, 1-(2-hydroxyethyl)piperazine, and piperazine) but are linear for those with strongly basic amines (e.g., piperidine and 3-methylpiperidine). The curved plots for the reactions with the weakly basic amines are typical for reactions reported previously to proceed through uncatalyzed and catalyzed routes with two intermediates (e.g., a zwitterionic tetrahedral intermediate $T^{\pm}$ and its deprotonated form $T^-$). In contrast, the linear plots for the reactions with the strongly basic amines indicate that the catalytic route (i.e., the deprotonation process to yield $T^-$ from $T^{\pm}$ by a second amine molecule) is absent. The Br${\o}$nsted-type plots for $Kk_2$ and $Kk_3$ (i.e., the rate constants for the uncatalyzed and catalyzed routes, respectively) exhibit excellent linear correlations with ${\beta}_{nuc}$ = 0.99 and 0.69, respectively. The effect of amine basicity on the reaction mechanism is discussed in detail.

• Bulletin of the Korean Chemical Society
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• v.35 no.8
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• pp.2443-2447
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• 2014

A kinetic study is reported on nucleophilic substitution reactions of 4-nitrophenyl nicotinate (7) and 4-nitrophenyl isonicotinate (8) with a series of cyclic secondary amines in $H_2O$ containing 20 mol % DMSO at $25.0^{\circ}C$. The Br${\o}$nsted-type plots for the reactions of 7 and 8 are linear with ${\beta}_{nuc}=0.90$ and 0.92, respectively, indicating that the reactions proceed through a stepwise mechanism with expulsion of the leaving group occurring in the rate-determining step. Comparison of the reactivity of 7 and 8 with that of 4-nitrophenyl benzoate (2a) and 4-nitrophenyl picolinate (6) has revealed that their reactivity toward the amines increases in the order 2a < 7 < 8 < 6, although the reactions of these substrates proceed through the same mechanism. Factors that control reactivity and reaction mechanism have been discussed in detail (e.g., inductive and field effects, H-bonding interaction, solvent effect, etc.).

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.18 no.6
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• pp.468-476
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• 2006

The paper deals with the numerical analysis of contaminants emission from the material affected by temperature variation in floor heating system. Considering mass transfer and heat transfer theories, a computer program for the analysis of VOCs emission was made. To demonstrate the accuracy of the numerical solution, the prediction results and the measured data were compared. Using this program, emission rates of the materials in the bakeout space and the no bake-out space were compared to estimate the variation of emission rate.

• Communications for Statistical Applications and Methods
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• v.16 no.2
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• pp.265-275
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• 2009

This paper considers a linear regression model with a spatial autoregressive disturbance with ill-posed data and proposes the generalized maximum entropy(GME) estimator of regression coefficients. The performance of this estimator is investigated via Monte Carlo experiments. The results show that the GME estimator provides efficient and robust estimate for the unknown parameter.