• KSCE Journal of Civil and Environmental Engineering Research
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• v.34 no.6
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• pp.1911-1918
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• 2014

The increase of input resources, such as labor and equipment, in a construction project causes workspace interference between activities and it influences on the productivity and quality of construction activities. To solve this problem, many studies related to the workspace interference have been performed, however they verified the workspace concerning with only the geometric location of activities or generated the shape of workspace by a whole object concept not separated units of detailed operations. It is difficult for project manager to reasonably analyze the workspace conflict, because the size of workspace cannot reflect the characteristics of an activity and input time of a resource. This paper presents a methodology that can generate three-dimensional models in order to optimize the workspace shape and size by considering with the characteristics of each activity and input time of each resource. The suggested method can be used for the active BIM system that optimizes the workspace conflict without additional construction duration and for the searching algorithm of optimized moving path for construction equipment.

• Clinical and Experimental Reproductive Medicine
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• v.31 no.3
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• pp.177-182
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• 2004

Purpose: To determine the efficacy of $Carnitil^{(R)}$ (acetylcarnitine, Hanmi, Korea) therapy in idiopathic oligoasthenospermic men. Materials and Methods: Forty-four subfertile men with abnormal semen parameters were treated between March, 2003 and March, 2004 with 3 g of $Carnitil^{(R)}$ daily for 3 months. Changes in semen parameters were evaluated 3 months after this therapy. Results: The mean age was 34.2 years and the mean follow-up duration was 3.7 months. In asthenospemic patients (n=28), semen analysis before and after $Carnitil^{(R)}$ treatment showed an increase in volume ($2.64{\pm}1.65\;ml$ vs. $3.10{\pm}1.60\;ml$), motility ($35.1{\pm}17.7%$ vs. $45.9{\pm}20.4%$) and viability ($51.4{\pm}20.3%$ vs. $59.3{\pm}13.6%$) respectively. In oligoasthenospermic patients (n=16), semen analysis before and after $Carnitil^{(R)}$ treatment showed an increase in sperm count ($10.7{\pm}54.4\;million/ml$ vs. $38.4{\pm}32.5\;million/ml$) respectively. Conclusions: These results suggested that in idiopathic oligoasthenospermic men the empirical medical therapy with acetylcarnitine may be considered as primary treatment.

• Journal of Families and Better Life
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• v.29 no.3
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• pp.43-57
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• 2011

Chronic mental-handicapped people are lacking in non-verbal expression such as eye contact, intonation, voice volume, facial expression, and gesture as well as the contents of speech, speak with a monotonous voice, fail to be vivid and clear in voice, and have absence of expression, thereby bringing about difficulty even for social adjustment and about low self-esteem. Accordingly, the purpose of this study was to examine effectiveness for enhancing self-expression and self-esteem by applying music therapy to the chronic mental-handicapped. The subjects were the chronic mental-handicapped who receive rehabilitation service at the community rehabilitation center, and who have over 10 years in the duration of disease. 1he music therapy activity was progressed with totally 14 sessions during 7 weeks with twice a week. This study confirmed t-test that is verification of difference in the mean, in order to examine difference between before and after music therapy in self-expression and self-esteem of the chronic mental-handicapped, and researched into qualitative case. The findings are as follows. First, as a result of score in self-expression scale, the significant improvement was shown after music therapy compared to before music therapy. The significant difference was indicated in verbal self-expression, phonetic self-expression, and non-verbal self-expression, which are its sub-spheres. Thus, the conclusion was obtained as saying that music therapy is effective for enhancing self-expression. Second, as a result of score in self-esteem scale, the significant difference was shown after music therapy compared to before music therapy. Thus, the conclusion was obtained as saying that music therapy is effective for enhancing self-esteem. Through the above results, the music therapy showed effectiveness of self-expression ability and self-esteem in the chronic mental-handicapped at the community rehabilitation center, thereby having been confirmed to be possibly utilized as rehabilitation program for the social skill ability and the social adjustment of the chronic mental-handicapped.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.51 no.1
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• pp.89-94
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• 2006

Traditionally fatty acid composition used to be analysed by a GC and the sample preparation process includes lipid extraction from sample and subsequent methyl esters preparation, which are time-consuming and cumbersome. As an alternative, simultaneous extraction/methylation methods are being developed for rapid and simplified sample preparation. To optimize one-step extraction/methylation method for analysis of fatty acid composition in brown rice, various reaction factors such as sample to reaction solution ratio, reaction time and temperature, shaking intensity were changed and resultant fatty acid composition data were evaluated in comparison with previous reports. The ratio of sample weight to reaction solution volume was the most critical factor in that higher sample to reaction solution ratio caused overestimation of palmitic acid and linoleic acid composition, resulting in underestimation of oleic acid. Lower reaction temperature also induced overestimation of linoleic acid and underestimation of oleic acid. Reaction duration and the intensity of shaking prior to and during the reaction, however, caused no significant changes in analysis results. In conclusion, the optimum condition was mixing 5 grains (about 0.2 g) of brown rice with $680{\mu}L$ of extraction/methylation mixture and $400{\mu}L$ of heptane, followed by reaction at $80^{\circ}C$ for 2 hours.

• Journal of Korean Society on Water Environment
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• v.23 no.4
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• pp.490-497
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• 2007

A Combined sewer overflows (CSOs) are themselves a significant source of water pollution. Therefore, the control of urban drainage for CSOs reduction and receiving water quality protection is needed. Examples in combined sewer systems include downstream storage facilities that detain runoff during periods of high flow and allow the detained water to be conveyed by an interceptor sewer to a centralized treatment plant during periods of low flow. The design of such facilities as stormwater detention storage is highly dependant on the temporal variability of storage capacity available (which is influenced by the duration of interevent dry periods) as well as the infiltration capacity of soil and recovery of depression storage. As a result, a continuous approach is required to adequately size such facilities. This study for the continuous long-term analysis of urban drainage system used analytical probabilistic model based on derived probability distribution theory. As an alternative to the modeling of urban drainage system for planning or screening level analysis of runoff control alternatives, this model have evolved that offer much ease and flexibility in terms of computation while considering long-term meteorology. This study presented rainfall and runoff characteristics of the subject area using analytical probabilistic model. This study presented the average annual COSs and number of COSs when the interceptor capacity is in the range $3{\times}DWF$ (dry weather flow). Also, calculated the average annual mass of pollutant lost in CSOs using Event Mean Concentration. Finally, this study presented a decision of storage volume for CSOs reduction and water quality protection.

• Journal of The Korean Astronomical Society
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• v.52 no.4
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• pp.109-119
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• 2019

While the reverberation mapping technique is the best available method for measuring black hole mass in active galactic nuclei (AGNs) beyond the local volume, this method has been mainly applied to relatively low-to-moderate luminosity AGNs at low redshift. We present the strategy of the Seoul National University AGN Monitoring Project, which aims at measuring the time delay of the $H{\beta}$ line emission with respect to AGN continuum, using a sample of relatively high luminosity AGNs out to redshift z ~ 0.5. We present simulated cross correlation results based on a number of mock light curves, in order to optimally determine monitoring duration and cadence. We describe our campaign strategy based on the simulation results and the availability of observing facilities. We present the sample selection, and the properties of the selected 100 AGNs, including the optical luminosity, expected time lag, black hole mass, and Eddington ratio.

• PNF and Movement
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• v.16 no.3
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• pp.461-473
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• 2018

Purpose: The purpose of this study was to evaluate and compare the effects of inspiratory muscle training with chest expansion exercises on pulmonary function, maximal inspiratory pressure, and gait in individuals with stroke. Methods: The participants in this study included 36 stroke patients. These patients were randomly divided into three groups: an inspiratory muscle training (IMT) with chest expansion (CE) group (n=12), an IMT group (n=12), and a control group (n=12). Participants in the IMT with CE group underwent IMT and CE exercises 5 times per week for 30 minutes over 4 weeks, whereas those in the CE group and the control group received IMT and conventional physical therapy, respectively, for the same duration. The investigator measured the patients' pulmonary function, maximal inspiratory pressure, and gait endurance. Results: After the intervention, the change values for the forced vital capacity (FVC), forced expiratory volume in one second (FEV1), peak expiratory flow (PEF), maximal inspiratory pressure (MIP), and six-minute walk test (6MWT) in the IMT with CE group and the control group were significantly greater than those of the control group (p<0.05). Similarly, after the intervention, the change values of the FVC, FEV1, PEF, MIP, and 6MWT in the IMT with CE group were significantly greater than those in the IMT group (p<0.05). Conclusion: These findings suggest that IMT with CE could be used to increase pulmonary function, maximal inspiratory pressure, and gait endurance in stroke patients.

• Korean Journal of Ophthalmology
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• v.32 no.6
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• pp.488-496
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• 2018

Purpose: This study aimed to analyze the factors influencing visual field recovery after transsphenoidal approach-tumor resection (TSA-TR) in pituitary adenoma patients with visual field defects (VFDs). Methods: We retrospectively evaluated 102 eyes of 102 patients with VFDs induced by pituitary adenomas who underwent TSA-TR between January 2010 and December 2015. All patients had been observed for more than one year. The severity of the VFD in each patient was evaluated using the mean deviation (MD) and pattern standard deviation in the most-affected eye. Clinical and demographic data such as preoperative visual acuity and visual field, age, sex, tumor volume, neurological symptoms at diagnosis, duration of symptoms, patterns of the preoperative VFD, and preoperative central VFD were investigated and analyzed for association with recovery of the visual field. Results: Recovery from VFDs occurred in 71 (69.6%) eyes after a mean period of $18.36{\pm}5.21$ months. The recovery group was younger (p = 0.003), had higher preoperative MD values (p = 0.016), and had better preoperative visual acuity (p = 0.03), compared with the non-recovery group. Preoperative central VFD (p = 0.006) and preoperative bilateral VFD (p = 0.016) were significantly less frequent in the recovery group. Multivariate logistic regression revealed that age at diagnosis (odds ratio [OR], 0.962; p = 0.022), preoperative MD (OR, 1.069; p = 0.046), preoperative central VFD (OR, 0.212; p = 0.039), and preoperative bilateral VFD (OR, 0.212; p = 0.035) were associated with visual field recovery after TSA-TR. Conclusions: Younger age, higher preoperative MD, and the preoperative abscence of central VFD or bilateral VFD were favorable factors influencing visual field recovery after TSA-TR in patients with pituitary adenomas. An understanding of the associated clinical factors may help predict visual outcomes after TSA-TR in pituitary adenoma patients with VFDs.

• Journal of Dental Anesthesia and Pain Medicine
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• v.18 no.6
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• pp.339-347
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• 2018

Background: There are many techniques of inferior alveolar nerve block injection (IANBI); one among them is the computer-assisted intraosseous injection (CAIOI). Here we aim to evaluate the effectiveness of CAIOI with $Quicksleeper^{(R)}$ in mandibular third molar surgery. Methods: This study is a clinical, single-blind, randomized, split-mouth, controlled trial including 25 patients (10 males and 15 females, mean age 21 years). The patients underwent surgical removal of bilateral mandibular third molars with two different IANBI techniques. One side was injected using $Quicksleeper^{(R)}$, and the other side was injected using a conventional IANBI. Both techniques used one cartridge (1.7 ml) of 1:100,000 epinephrine 4% articaine. A supplementary injection was used if necessary. All volumes of anesthetic agent used were recorded. Statistical analysis was performed using paired t-test and Wilcoxon test. Results: This research showed that CAIOI has faster onset and shorter duration of action than IANBI (P < 0.05). The pain was similar in both techniques. In the CAIOI group, one-third of the cases could be completed without additional anesthesia. The remaining two-thirds required minimal supplementary volume of anesthesia. The success rates were 68% for CAIOI and 72% for IANBI, respectively. Conclusion: CAIOI is an advantageous anesthetic technique. It can be used as an alternative to conventional IANBI for mandibular third molar surgery.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.18 no.5
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• pp.183-193
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• 2019

This study developed a shockwave detection and prediction of their extinction point method based on continuous wavelet transform using trajectory data from probe vehicles equipped with automotive sensors.. To analyze the effectiveness of the proposed method, this paper proposed two measures which are a distance error between the extinction points of the predictor and an time-location error of the extinction points. The proposed concept was proved using the micro simulation based experiment with three exogenous variables of traffic volume, lane-close duration, market penetration of probe vehicles. The analysis results show that the proposed method is capable of detecting the traffic shockwaves as well as predicting their extinction point, and also that the accuracy of the proposed method is highly dependent on the rate of the probe vehicles.