• The Journal of Korean Physical Therapy
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• v.18 no.4
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• pp.27-40
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• 2006

Purpose: This study was to investigate the effect of an arm sling on gait with hemiparesis. Methods: Fifteen patients(8 male, 7 female) with hemiparesis participated in this study and walked self-selected speed over 10m walkway, randomly without arm sling, with Single strap hemisling and Rolyan humeral cuff sling. It were filmed by 5 video camera and used with 3-dimensional motion analyzer system. The following gait variables were analyzed: temporo-spatial parameters, kinematic parameters. Results: In the comparison of temporo-spatial parameters each trial, walking velocity and single support time on affected side was significantly increased and step length on affected side, step length asymmetry ratio, single support time asymmetry ratio was significantly decreased in the Single strap hemisling and Rolyan humeral cuff sling. In the comparison of kinematic parameters each trial, maximal angle of the hip flexion on affected side was significantly increased in the Single strap hemisling and Rolyan humeral cuff sling and maximal angle of the knee flexion on affected side was significantly increased in the Rolyan humeral cuff sling and maximal angle of the ankle dorsiflexion on affected side was significantly increased in the Single strap hemisling. Conclusion: An arm sling improved walking velocity and decreased asymmetry and increased maximal angle of hip, knee, ankle flexion on affected side with hemiparesis caused by stroke.

• Journal of Families and Better Life
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• v.26 no.3
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• pp.15-23
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• 2008

The purpose of this study was to investigate the relationship mother-adolescent communication and adolescents' alienation in both single mother-headed family and two-parent family. The subjects were 548 middle and high school students who were 82 single mother-headed family's adolescents and 466 two-parent family's adolescents in Keoungbok. The data were analyzed by factor analysis, t-test, standard multiple- and hierarchical multiple regression(using SPSS 12.1). Major findings were as follows: (1) The single mother-headed family's adolescents were perceived less positive mother-adolescent communication and higher alienation than two-parent family's adolescents. (2) The adolescents' alienation was associated with mother-adolescent communication in both single mother-headed and two-parent family. The less positive parent-adolescent communication, the higher adolescents' alienation. (3) The family structure(single mother-headed or two-parent) was a significant predictor of adolescents' alienation. But when the effect of mother-adolescent communication was controlled, the effect of the family structure became non-significant.

• Asian Journal for Public Opinion Research
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• v.11 no.1
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• pp.54-74
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• 2023

This study examined the subcomponents of the local environment that have an important influence on the life satisfaction of people living in single-person households and analyzed how the causal relationship between these variables differs between generations. Specifically, the local environment was classified into the following subcomponents: convenience, comfort, safety, healthcare, and neighborhood relationships. This study analyzed the data of 3,260 respondents from single-person households in the 2020 Residents' Quality of Life Survey in Gyeonggi Province. As a result, it was found that the perception of all subcomponents of the local environment had a positive effect on the life satisfaction of people in single-person households. The effect of neighborhood relationships was relatively large compared to other subcomponents. Next, the influencing factors on life satisfaction of people in single-person households showed differences between generations, which were defined by this study as youth (under age 35), middle-aged (35-64), and elderly (65 and older). Convenience and safety for the youth group and neighborhood relationship for the middle-aged group were most important. The elderly group was most affected by healthcare. The proportion of single-person households worldwide, including in Korea, is gradually increasing, and considering this, this study provides important policy implications.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.36 no.7
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• pp.759-765
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• 2012

This study investigates the effect of diesel combustion strategies on exhaust emissions and hydrocarbon species emissions for a 1.7 L common rail direct injection diesel engine at 1500 rpm and 3.9 bar BMEP. The first strategy is a method to adopt no EGR with a split injection composed of pilot and main injection (split injection). The second is to adopt a moderate EGR rate with main injection only (single-1). The third is to use a high level of EGR and main injection with rail pressure increase, $i.e.$ low-temperature diesel combustion (single-2). Split injection and single-1 showed a renowned phenomenon of a PM-NOx trade-off, whereas single-2 was observed of a PM-NOx trade-off to reduce PM and NOx simultaneously. HC speciation results show that the split injection produced the least amount of HC species, regardless of the carbon number bin, followed by single-1 and single-2. The ratios of methane, acetylene, and CO to THC increased as a combustion A/F ratio is richer due to reduced oxygen content in the vicinity of the combustion zone, thus enhancing pyrolysis.

• Journal of Astronomy and Space Sciences
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• v.18 no.2
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• pp.163-173
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• 2001

In this paper, space radiation environment and single event effect(SEE) have been analyzed for the KOMPSAT-2 operational orbit. As spacecraft external and internal space environment, trapped proton, SEP(solar energetic particle) and GCR(galactic cosmic ray) high energy Protons and heavy ions spectrums are analyzed. Finally, SEU and SEL rate prediction has been performed for the Intel 80386 microprocessor CPU that is planned to be used in the KOMPSAT-2. As the estimation results, under nominal operational condition, it is predicted that trapped proton and high energetic proton induced SBU effect will not occur. But, it is predicted that heavy ion induced SEU can occur several times during KOMPSAT-2 3-year mission operation. KOMPSAT-2 has been implementing system level design to mitigate SEU occurrence using processor CPU error detection function of the on-board flight software.

• International Journal of Highway Engineering
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• v.18 no.1
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• pp.1-11
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• 2016

PURPOSES : This study estimated the load effect of a single heavy truck to develop a live load model for the design and assessment of bridges located on an expressway with a limited truck entry weight. METHODS : The statistical estimation methods for the live load effect acting on a bridge by a heavy vehicle are reviewed, and applications using the actual measurement data for trucks traveling on an expressway are presented. The weight estimation of a single vehicle and its effect on a bridge are fundamental elements in the construction of a live load model. Two statistical estimation methods for the application of extrapolation in a probabilistic study and an additional estimation method that adopts the extreme value theory are reviewed. RESULTS : The proposed methods are applied to the traffic data measured on an expressway. All of the estimation methods yield similar results using the data measured when the weight limit has been relatively well observed because of the rigid enforcement of the weight regulation. On the other hand, when the estimations are made using overweight traffic data, the resulting values differ with the estimation method. CONCLUSIONS : The estimation methods based on the extreme distribution theory and the modified procedure presented in this paper can yield reasonable values for the maximum weight of a single truck, which can be applied in both the design and evaluation of a bridge on an expressway.

• Biomolecules & Therapeutics
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• v.1 no.2
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• pp.220-225
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• 1993

Effect of BR-900317 on the angiotensin I-induced pressor response in pithed rats and the effects of its single oral administration on plasma angiotensin converting enzyme (ACE) activities in normotensive rats and on the cardiovascular system in hypertensive model rats (SHR, RHR), were compared with those of captopril. BR-900317 attenuated the angiotensin I-induced pressor effects in pithed rats. In a single oral dose administration study, BR-900317 inhibited the plasma ACE activities in a dose-dependent fashion. Duration of the action of BR-900317 was similar to that of captopril. BR-900317 produced antihypertensive effect in spontaneously hypertensive rats and dose-dependent antihypertensive effect in 2-kidney Goldblatt hypertensive rats without affecting heart rate. These results suggest that the main mechanism of the antihypertensive effect of BR-900317 is the suppression of angiotensin II production due to the inhibition of the ACE.

• Journal of the Korean Society of Clothing and Textiles
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• v.26 no.11
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• pp.1547-1557
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• 2002

The purpose of this study is to find the profitable clothes design of middle-aged men by examining visual effects in physical design. The methode of study is experimentation. The sample of this study is people who live in Kwangiu, Korea and 20-50 age's 719. The difference of physical design effect by arrangement, pattern and the shape of body. There are partly resemblance difference in physical design visual effect by the shape of body and clothes design(arrangement and pattern)In weak type, single suit with striped pattern and double suit with check pattern make the upper body look short. Otherwise, double suit with striped pattern have man look tall. In standard type, single arrangement suit with striped pattern make the lower half of body long, so make man look tall. And double arrangement suit with striped pattern have man look tall. The suit without pattern have one's shoulder look wide. In pyknic type, striped pattern make the lower half of one's body look long. But single arrangement with striped pattern have the upper body look big. sing1e suit with striped pattern make lower half of body look long and check pattern make it look short. Totally, arrangement, and pattern are very important clothes due to give an effect on whole visual effect man's suit. Also, these dues were felt differently by each types of body. So, it is confirmed that the type of body is important fluent to make people perceive.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.18 no.5
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• pp.423-430
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• 2005

In this paper, we have simulated a Symmetric Dual-gate Single-Si TFT which has three split floating $n^{+}$ zones. This structure reduces the kink-effect drastically and improves the on-current. Due to the separated floating $n^{+}$ zones, the transistor channel region is split into four zones with different lengths defined by a floating $n^{+}$ region. This structure allows an effective reduction of the kink-effect depending on the length of two sub-channels. The on-current of the proposed dual-gate structure is 0.9 mA while that of the conventional dual-gate structure is 0.5 mA at a 12 V drain voltage and a 7 V gate voltage. This results show a $80 {\%}$ enhancement in on-current by adding two floating $n^{+}$ zones. Moreover we observed the reduction of electric field In the channel region compared to conventional single-gate TFT and the reduction of the output conductance in the saturation region. In addition we also confirmed the reduction of hole concentration in the channel region so that the kink-effect reduces effectively.

• Journal of Digital Convergence
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• v.15 no.11
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• pp.37-48
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• 2017

This study aims to examine the effect of housing environment on single mothers' health and to find out how to improve their health and housing environment. For the purpose, this study analyzed the Single-parents survey carried out by Ministry of Gender Equality and Family in 2015. The results are as follows. When residential functions such as mining, heating, and noise are not fulfilled among the physical characteristics of the residential environment, single-mothers are more likely to feel unhealthy. Among the socio-economic characteristics of housing, people who live in public rental housing are more likely to feel unhealthy than those living in own house. And people who have excessive household debt are less healthy than those having no debt. Socioeconomic characteristics of housing environments had a significant effect on depression of single-mothers. Based on the results, the author suggested that housing improvement services, survey of housing conditions of single parents, provision of services considering household debt and improving residential conditions of public rentals houses should be implemented.