• Title/Summary/Keyword: effective period

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The Configuration of Power Demand Control System (전력수요 제어 시스템 구성 방안)

  • 송언빈
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • 1993.10a
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    • pp.107-110
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    • 1993
  • This paper presents the technical requirements and configuration of power demand control system in office building Generally, the peak power demand is occurred in cooling period. For power demand control in existing building, the most effective control points are the motors for air handling units.

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Clinical Comparison Study on Bell's Palsy Patients by the Period of Disease (병력기간과 말초성 안면신경마비와의 상관성 연구)

  • Hong, Jang-Mu;Shin, Kyung-Min;Seo, Gwang-Myung;Choi, Soon-Young;Bae, Kwang-Rok;Park, Ji-Young;Baek, Yong-Hyeon;Nam, Dong-Woo;Lee, Yun-Ho
    • Journal of Acupuncture Research
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    • v.26 no.2
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    • pp.71-77
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    • 2009
  • Objectives : This study was designed to evaluate the influence of the period of disease on Bell's palsy patients Methods : We investigated 40 cases of patients with peripheral facial palsy who visited Yumin Oriental Hospital from 1st January to 31st August, 2008 with both oriental and western medical therapy and classified them as period of disease. The period of disease of Group A was within 3 days. The period of disease of Group B was from 4 to 10days. We evaluated the treatment effect of each group by House-Brackmann grade before treatment and 1, 2 week treatment. Results: 1. There was a statistical significant difference in period of disease between Group A and Group B. 2. After 1 week treatment, Group A showed more recovery compared with Group B. 3. After 2 week treatment, there was no statistical significant difference in House-Brackmann grade between Group A and Group B Conclusions : These results suggest that early treatment could be more effective in recovery of Bell's palsy.

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The Effect of Automatic Environmental Control by Image Analysis System on the Performance of Pigs in Different Seasons

  • Chang, D.I.;Park, C.S.;Lee, H.S.;Lee, B.D.;Chang, H.H.
    • Asian-Australasian Journal of Animal Sciences
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    • v.13 no.5
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    • pp.681-685
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    • 2000
  • A computer software was developed in our laboratory to automatically control the pigs environment by the image analysis system (IAS), which monitors and analyzes the pig's behavior and feeds the results back to the computer hardware. Three feeding trials were conducted with growing pigs ($L{\times}Y$) to test the effectiveness of the IAS under various seasons. In all three trials, the open-sided conventional pens with half-slatted floor were used as controls; for the IAS treatment, fully-slatted floors were used in the windowless pens. Experiment 1 was conducted in the winter for 30 d with 24 growing pigs. There were two treatments (Conventional vs. IAS), and three pens (replicates) per treatment. During the growing period, the feed efficiency was significantly (p<0.05) improved by the IAS. In addition, the pigs reared under the IAS during the growing period displayed better growth rate during the finishing period than did the pigs reared under the conventional conditions. Experiment 2 was conducted in the summer for 30 d with 24 growing pigs. The experimental design was the same as Experiment 1. During the finishing period, all the pigs were kept in conventional open-sided pens until their market weights to evaluate their carcass characteristics. During the growing period, the growth rate and feed efficiency of the pigs in the IAS was better than those of the control pigs. In addition, various carcass characteristics were significantly improved by the IAS rearing during the growing period. Experiment 3 was conducted with 30 growing pigs for 30 d in the spring. The experimental design was the same as Experiment 1. No difference was found in growing performance between the control and IAS pigs. It could be concluded that the IAS is effective in providing optimum conditions for the growing pigs in summer and winter seasons. In addition, providing an optimum environment during the growing period results in improved growth rate, feed efficiency, and carcass qualities for the finishing pigs.

The Effect of Action Observation on Motor Function of Paretic Upper Extremity in Stroke Patients: Single Subject Study (동작관찰훈련이 뇌졸중 환자의 마비측 상지기능에 미치는 영향: 단일사례연구)

  • Jeong, Woo-Sik;Yun, Tae-Won;Choi, Yeon-Jeong;Lee, Hong-Gyun
    • Journal of the Korean Society of Physical Medicine
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    • v.8 no.2
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    • pp.271-280
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    • 2013
  • PURPOSE: This study was conducted in chronic hemiplegic patients to examine the effect of the training of the ipsilateral arm that is identical to the model performing movements and the training of the contralateral arm on the function of the arm. METHODS: The subjects were participated total 2 patients(the subject 1 with left hemiplegia and the subject 2 with right hemiplegia). The study was conducted for 4 weeks. The action observation training were repeated 10 times in 10 days during intervention period. The evaluation of the arm function such as BBT, MFT and MAL in the each subject were examined 5 times in the baseline period, 10 times during the intervention period and 5 times during the baseline regression period. RESULTS: The results of the evaluation in each subject were presented as mean values and video graphs. The arm function of the 2 subjects were improved during the intervention period in comparison with the baseline period, and the improvement was maintained even during the regression baseline period. In addition, there were large variation ratio of BBT and MAL (AOU, QOM) in comparison with subject 1. CONCLUSION: According to the results, the action observation training was more effective in improving upper limb function of stroke patients who imitate the performed behavior of paralyed parts on the same side.

The effects of cold treatment on the pupal period, emergence rate, and number of Protaetia brevitarsis larvae spawned

  • JANG, Heeseung;CHOI, Moon Bo;LEE, Hyoki;KIM, Yeongbu;KWON, Ohseok
    • Entomological Research
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    • v.48 no.6
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    • pp.550-558
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    • 2018
  • To develop a system for the mass production of Protaetia brevitarsislarvae (Pbl), this study analyzed the oviposition characteristics of third instar Pbl through successive rearing and cold treatments. In the first generation, females laid 50 eggs each on average, and spawned higher numbers of eggs for the first 5 days but then fewer after this. However, all of the $2^{nd}$-generation females that were produced through the successive rearing of eggs from the $1^{st}$ generation did not spawn. When test insects (TI) were raised at $32^{\circ}C$, their $mean{\pm}SE$ pupal period and emergence rate were $28.4{\pm}1.9$ days and 87%, respectively. However, most individuals raised in cold treatments ($5^{\circ}C$ and $-5^{\circ}C$) without a pre-cooling period did not survive. Individuals exposed to a pre-cooling period, however, had a 7-10 days longer pupal period than those raised at $32^{\circ}C$, and their emergence rate (90%) was slightly higher. Different cold treatment temperatures ($0^{\circ}C$, $3^{\circ}C$, or $5^{\circ}C$) and periods (30 or 60 days) were tested in further experiments. The experimental group kept for 30 days at $0^{\circ}C$ and $3^{\circ}C$ had the shortest pupal period of all, and emergence rates exceeded 90% in most groups. With respect to the number of eggs spawned by the second generation females after cold treatments, the experimental groups held in cold treatments at $5^{\circ}C$ for 30 and 60 days were found to spawn the most eggs. Consequently, the experimental group kept at $5^{\circ}C$ for 30 days was the most effective set of conditions tested during the entire breeding period.

Effects of the Instrument Pilates Exercise Based on the Schroth Exercise on the Cobb's Angle, Angle of Trunk Rotation and Low Back Pain in Patients with Idiopathic Scoliosis: A Single Subject Study

  • Song, Ki Yeon;Baek, Ki Hyun;Lim, Mi Soo;Lim, Hyoung-won
    • The Journal of Korean Physical Therapy
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    • v.33 no.2
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    • pp.97-105
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    • 2021
  • Purpose: This study examined the effects of the application of Schroth exercise-based instrument Pilates exercise on the Cobb's angle, angle of trunk rotation, and low back pain of female patients with idiopathic scoliosis. Methods: Three patients with idiopathic scoliosis at a Cobb's angle of 20° or more participated in this study. Among the single-subject experimental research designs, a reversal (ABA) design was performed. In particular, Schroth exercise-based instrument, Pilates exercise, was performed for 10 weeks, consisting of five weeks between the baseline and intervention one period and five weeks between the intervention 1 and intervention 2 periods, and then followed up for five weeks. Results: After the Schroth exercise-based instrument, Pilates exercise, was applied, the Cobb's angle and the angle of trunk rotation decreased compared to the baseline in all subjects, and the follow-up period also showed a continuous decline. After Pilates exercise was performed, low back pain in subjects 1 and 2 was decreased in the intervention 1 period compared to the baseline. The level of low back pain in the intervention 2 period increased compared to the intervention 1 period, but a reduction was noted in the follow-up period. The low back pain in the subject was decreased in all intervention periods and the follow-up period. Conclusion: Schroth exercise-based Pilates exercise improves the Cobb's angle and the angle of trunk rotation for female patients with idiopathic scoliosis in their teens and 20s, and an effective intervention method is proposed for low back pain.

Vase Life and Quality of Cut Flower by Wet Solution according to Shipping Period and Temperature in Dendranthema grandiflorum 'Jinba'

  • Roh, Yong Seung;Kim, In Kyung;Yoo, Yong Kweon
    • Journal of People, Plants, and Environment
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    • v.22 no.6
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    • pp.583-591
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    • 2019
  • This study was conducted to examine the effects of wet storage solution, transport period and temperature on vase life and quality of cut flowers in standard chrysanthemum 'Jinba'. Immediately after transport, the fresh weight and flower diameter of cut flowers did not show a difference according to wet storage solutions regardless of the transport period, but as the transport period increased, the fresh weight and flower diameter increased. The flower bud stage at harvest was maintained due to the small changes in flower diameter, and the freshness of leaves was better when transported at 5℃ than at 25℃. When transported at 25℃, the longer the transport period, the lower the quality of cut flowers as some petals opened up and showed early flowering after transport. In preservative solutions, quality of cut flowers transported at 25℃ was lower than that at 5℃ due to fresh weight and diameter according to the longer transport period. The vase life of cut flowers was 1.0 day, 0.8 day, and 7.3 days longer when transported for 3, 5, and 7 days respectively at 5℃ than at 25℃. The quality of cut flowers was better due to increase in fresh weight and flower diameter, as well as vase life in wet storage solutions of ClO2 and Chrysal OVB than in tap water, regardless of transport period and temperature. There was no difference in fresh weight and vase life between ClO2 and Chrysal OVB, but flower diameter was greater in ClO2 than in Chrysal OVB. Therefore, for long-term transport of cut standard chrysanthemum 'Jinba', wet storage transport in ClO2 at 5℃ was found effective in maintaining the quality and vase life of cut flowers.

Natural time period equations for moment resisting reinforced concrete structures comprising hollow sections

  • Prajapati, Satya Sundar;Far, Harry;Aghayarzadeh, Mehdi
    • Computers and Concrete
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    • v.26 no.4
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    • pp.317-325
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    • 2020
  • A precise estimation of the natural time period of buildings improves design quality, causes a significant reduction of the buildings' weight, and eventually leads to a cost-effective design. In this study, in order to optimise the reinforced concrete frames design, some symmetrical and unsymmetrical buildings composed of solid and hollow members have been simulated using finite element software SAP 2000. In numerical models, different parameters such as overturning moment, story drift, deflection, base reactions, and stiffness of the buildings were investigated and the results have been compared with strength and serviceability limit criteria proposed by Australian Standard (AS 3600 2018). Comparing the results of the numerical modelling with existing standards and performing a cost analysis proved the merits of hollow box sections compared to solid sections. Finally, based on numerical simulation results, two equations for natural time period of moment resisting reinforced concrete buildings have been presented. Both derived equations reflected higher degree of correlation and reliability with different complexities of building when compared with existing standards and relationships provided by other scholars. Therefore, these equations will assist practicing engineers to predict elastic behaivour of structures more precisely.

Production Cost Analysis of Leaf tobacco farm Households (잎담배 재배농가의 생산비 분석)

  • Kim, Jai-Hong;Kang, Il-Tack
    • Korean Journal of Agricultural Science
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    • v.31 no.2
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    • pp.149-160
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    • 2004
  • This study had carried out an analysis of leaf tobacco production cost by cost items, growing stages, and farm sizes per 10a to provide the basic data for determination of the purchasing price of leaf tobacco by KT&G. Considering the survey results of 12 tobacco farm households, the composition rates of production cost by items revealed as 7-10% for land service, 5-22% for depreciation, 13-25% for material costs, 50-65% for labour cost respectively. The production cost of leaf tobacco by growing stages were shown as 15.3% in nursery bed period, 32.3% in main growing period in field, 30.8% in harvesting period and 21.6% in packing period. The magnitude of wage expenditure was appeared as harvesting stage, packing stage, growing stage on main field and nursery bed stage in order. The amount of material costs were revealed as the growing stage in main field, harvesting stage, nursery bed stage and packing stage respectively. The production costs of leaf tobacco per 10a by farm sizes were shown as 1,615,879won for small farm, 1,446,896won for medium farm and 1,454,408won for large farm respectively. The production cost of leaf tobacco had shown decreasing tendency according to increasing farm sizes. To promote the international market competitiveness of leaf tobacco producing farms, labour saving production technologies and cost effective farm size to decrease tobacco production cost should be developed.

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