• Journal of Korean Academy of Nursing
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• v.24 no.1
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• pp.5-17
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• 1994

The purpose of this research was to determine whether or not a consistent program of aerobic exercise as a nursing intervention would have beneficial effect on schizophrenic patients. Nonequivalent control group pre-post test research was designed. Subjects for this study were selected from thirty-eight chronically schizophrenic patients who were hospitalized at S psychiatric hospital in Taejeon city. Of them seventeen were experimental group, twenty-one were control group. The data were collected during the period from November 1 to December 30, 1992. The instruments used in this study were Scale for Assessment of Negative Symptom developed by Andreason, Behavioral Observational Checklist (SASS) developed by Jorgensen, Harvard Step Up Test. The data were analyzed by descriptive statistics, t-test and paired t-test, using the SPSS program. The results of this study are summerized as follows : 1. The scores of SANS were a significantly difference from pre to posttesting, when the experimental group was contrasted to the control group (t=4.73, p=.00). 2. The scores of SASS were a significantly difference from pre to posttesting, when the experimental group was contrasted to the control group (t=3.42, p=.00). 3. The scores of physical fitness were a significantly difference from pre to posttesting, when experimental group was contrasted to the control group (t=-5.87, p=.00).

• The Journal of Korean Physical Therapy
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• v.17 no.4
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• pp.537-557
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• 2005

The purpose of this study was to investigate the effect of pelvic traction and muscle energy technique(MET) for hemiplegic patients on static standing balance. The scale for static standing balance is measured by using mean balance(%), frequence(Hz), sway area($mm^2$), sway path(mm), max sway velocity(mm/s), ant/post sway angle($^{\circ}$), lateral sway angle($^{\circ}$), sway number, change of pelvic height is measured in relation to the height of ASIS and PSIS. The subjects of this study were thirty hemiplegic patients: 15men and 15 women, with an average ages of 50.80 years. The thirty subjects were divided into 3 group of 10 at random ; ten subjects had pelvic traction after bobath therapy (the pelvic traction group), ten subjects had muscle energy technique after bobath therapy (the MET group), and ten subjects had only bobath therapy (the control group). Static standing balance was measured using BPM (balance performance monitor; data print software version 5.3), pelvic height was measured using height measuring with an adjustable horizontal arm. In order to assure the statistical significant of the result, an one-way ANOVA, the paired t-test, and a person's correlation were applied at the.05 level of significance. The results of this study were as follows: 1) The change in pelvic height were statistically significant between the pelvic traction group, the MET group and the control group on pre-treatment and post-treatment(p<.05). 2) The change in affected and non-affected on weight bearing were not statistically significant between the pelvic traction group, the MET group and the control group on pre-treatment and post-treatment(p>.05). 3) The change in frequency were statistically significant between the MET group, the control group and the pelvic traction group on pre-treatment and post-treatment(p<.05). 4) The change in sway area were statistically significant between the MET group, the control group and the pelvic traction group on pre-treatment and post-treatment(p<.05). 5) The change in sway pa1h were statistically significant between the pelvic traction group, the MET group and the control group on pre-treatment and post-treatment(p<.05). 6) The change in max sway velocity were statistically significant between the pelvic traction group, the MET group and the control group on pre-treatment and post-treatment(p<.05). 7) The change in ant/post sway angle were statistically significant between the pelvic traction group, the MET group and the control group on pre-treatment and post-treatment(p<.05). 8) The change in lateral sway angle were statistically significant between the pelvic traction group, the MET group and the control group on pre-treatment and post-treatment(p<.05). 9) The change in sway number were statistically significant between the pelvic traction group, the MET group and the control group on pre-treatment and post-treatment(p<.05). In conclusion, there was a difference between the experimental group and the control group. In the future, we have to study continuously about pelvic traction and muscle energy technique in hemiplegic patients.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.1
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• pp.165-172
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• 2015

The purpose of this study was to identify the effect of Genibo program robot-based learning(R-Learning) on a pre-schooler's mental state. To achieve above study purpose, the subject of this study was selected 46(teacher 2, five years old pre-schooler 44) from pre-school childrens in Kyongki Y city(R-Learning activity participants group 21: boys 10, girls 11. non-participants 25: boys 13, girls 12). R-Learning program is consist of 5 field about 20 contents using Genibo robot, were applied to the experimental group and the pre-post test was conducted using the EQ assessment tool and observations. The data were analyzed by t-test using the SPSS(ver 18.0) program. The results were as follows: First, the exposure of robots to pre-schoolers in practical situation has shown positive influence to the children's emotional well-being. Positive improvements were observed in the four sub categories of the EQ assessment after exposure. Second, the Genibo used for this study, is a biomimetic AI based robot mimicking the behavior of a pet dog. This is related more or less to the specifications of a pre-school education where animals are used as a 'friendly medium' to facilitate the learning process. Third, the robot exposure gave benefit to all the ones in the sample, regardless of sex. Furthermore, It is suggested that promising potential for robots to be utilized as a new educational media plus facilitator, R-Learning is related more or less to the specifications of a pre-school education where animals are used as a 'friendly medium' to facilitate the learning process, and when applying them for education, stereotyping the likes of sex is overrated - instead, the focus should be more on the pre-schoolers' / childrens' individual traits, learning curve differences and alike.

• Journal of Music and Human Behavior
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• v.15 no.1
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• pp.1-23
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• 2018

Recently, there has been a growing focus on the concerns pre-service teachers have as they move through different stages of their teacher preparation programs. Accordingly, the purpose of this study was to investigate pre-service secondary music teachers' concerns about music teaching and learning. The specific research questions were as follows: (a) What concerns are most common among participants? (b) What are differences in the concerns of pre-service secondary music teachers based on their stage of teacher preparation? (c) What are differences in the concerns of pre-service secondary music teachers based on their previous teaching experiences? A survey was distributed to pre-service secondary music teachers in a university in Seoul, and responses from a total of 93 participants were included in the final analysis. Data analysis indicated that pre-service music teachers experienced more concerns related to teaching tasks and student impact than themselves. Also, as participants progressed through their teacher preparation programs, self concerns decreased while task concerns and student impact concerns increased. Pre-service secondary music teachers who had previously taught in a school had fewer concerns than participants with no teaching experience. Suggestions for how teacher preparation programs can address the concerns of pre-service secondary music teachers are offered.

• JSTS:Journal of Semiconductor Technology and Science
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• v.17 no.4
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• pp.561-567
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• 2017

This paper presents a 4-channel common-cathode VCSEL driver array operating up to 6.25 Gb/s per channel for the applications of HDMI 2.0 active optical cables. The proposed VCSEL driver consists of an input buffer, a modified Cherry-Hooper amplifier as a pre-driver, and a main driver with pre-emphasis to drive a common-cathode VCSEL diode at high-speed full switching operations. Particularly, the input buffer merges a linear equalizer not only to broaden the bandwidth, but to reduce power consumption simultaneously. Measured results of the proposed 4-channel VCSEL driver array implemented in a $0.13-{\mu}m$ CMOS process demonstrate wide and clean eye-diagrams for up to 6.25-Gb/s operation speed with the bias current 2.0 mA and the modulation currents of $3.1mA_{PP}$. Chip core occupies the area of $0.15{\times}0.1{\mu}m^2$ and dissipate 22.8 mW per channel.

• 한국정보디스플레이학회:학술대회논문집
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• 2003.07a
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• pp.203-206
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• 2003

$Y_2O_2S:Eu$ phosphors with fine particle have been synthesized by citric acid-gel method. In this method, $Na_2S_2O_3$ was added to $Y_2O_3S:Eu$ precursor, then the mixture was fired at $1000^{\circ}C$ for 3h in $S_2$ atmosphere. When the $Y_2O_3S:Eu$ precursor was pre-annealed at $400{\sim}700^{\circ}C$ before the firing of the mixture, the fine particles with a diameter of around 1 ${\mu}m$ were obtained after the firing. The phosphor pre-annealed at $400^{\circ}C$ showed a luminance and CIE color coordinates of 2350 $cd/m^2$ and (0.61, 0.37), respectively, at under excitation of 3 kV and $60{\mu}A/cm^2$.

• Special Issue of the Society of Naval Architects of Korea
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• 2007.09a
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• pp.1-6
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• 2007

To improve productivity of the LNG carriers which are growing bigger and bigger, many researches are being carried out by shipyards. In this regard, we reviewed possible problems which could occur during the erection of 216K LNG carrier's motor/compressor room with all outfittings pre-installed. As a first item, the weights of hull and outfittings were precisely estimated to make sure that the erection is carried out within yard's capability. In the next place, deflection and safety of the structure were verified by FEM analysis. As a result, the erection was finished successfully and yard's productivity was also improved. This review is a good example which shows the importance of through study and preparation for improving yard's productivity which is already reached its limit.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.4 no.1 s.6
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• pp.107-115
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• 2005

For effective IP based service implementation on the wireless network environments, wireless network including the ITS network have to support QoS guaranteed protocol such as a RSVP. RSVP is a resource reservation protocol for Internet environment, and its scalability makes easy to implement RSVP over the various IP transport technologies. But for the If based ITS wireless network environment, RSVP is not suitable, since by its path setup procedure characteristic. In the wireless access network for ITS service, when a mobile node moves to other domain it must perform registration procedure. But the registration procedure is time consuming steps, so if a RSVP session was already established in the previous domain, the RSYP session may be disconnected and the time to re establish a new RSVP session is long enough to cause serious packet loss. In this paper, we propose a pre-path reservation mechanism for applying the RSVP in wireless access networks for ITS. In the pre-path reservation mechanism, the resource reservation procedure occurred during a mobile node's handoff time. An access point in wireless access network performs this procedure when the mobile node attempts handoff The access point executes pre-path reservation procedure as a proxy, since the mobile node does not have IP address until the address allocation procedure is finished in a new domain.

• Journal of the Korean housing association
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• v.15 no.5
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• pp.1-11
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• 2004

This study has been performed to review pre-school children's needs for privacy within normal residential space. In this study, there were three circumstances in which children need to stay alone without being interrupted by their parents; First, they strongly want to be stay quiet until relieving their anger or fear, shortly after disciplined and impugned by their parents. Second, infant children need to obtain their own territory in order to demonstrate ownership and dignity in their sley space. Third, there are also special circumstances of privacy needs among families with intrusive parents such as alcoholics and heavy smokers, or for the children of disability. In Korea, it is presumed that more than 60 percent the pre-school children aging three to six are in deficit of privacy for relieving their emotional disturbance, but no research has been documented for the case of disabled or interrupted children. Therefore in this study, it was primarily proposed that empirical studies need to be peformed among Korean preschoolers, in order to evaluate privacy needs in the perspectives of ordinary family lives, individual household behaviors, and special conditions of disability or offensive family members.

• The korean journal of orthodontics
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• v.28 no.1 s.66
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• pp.51-59
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• 1998

The purpose of this study was to evaluate the effectiveness of gargling solution with 0.05% NaF and 10% Xylitol in orthodontic patients with fixed appliance. The sample consisted of 30 adolescent patients who were classified into an experimental group and a control group, 15 patients each. Experimental group was used experimental gargling solution and the control group was used with placebo solution. The change of S. mutans in saliva was observed by $Cariescreen^R$ SM kit at pre and post 2, 4, 6, 8 weeks. The results were as follows 1. There were significant reduction in the number of S. mutans in saliva between pre and post 2 weeks(p<0.01), 4 weeks(p<0.05), 6 weeks(p<0.001), and 8 weeks(p<0.001) in experimental group. And significant reduction also were observed in the number of S. mutans in saliva between post 2 weeks, 6 weeks(p<0.05), and 8 weeks(p<0.05), but no significant reduction were showed in control group. 2. There were significant correlation in the number of S. mutans between each measurement time(pre and post 2, 4, 6, 8 weeks) in control group. 3. There were no correlation between pre and post 2 weeks, but significant correlation were observed between 2, 4, 6, 8 weeks in experimental group.