• 제목/요약/키워드: Control experiment

검색결과 11,191건 처리시간 0.051초

프랏을 이용한 영시 운율 교육 (Teaching English Prosody through English Poems with Cloned Native Intonation)

  • 윤규철;오지연;안상철
    • 영어영문학
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    • 제56권4호
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    • pp.753-772
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    • 2010
  • The purpose of this work is to examine the viability of employing the prosody cloning technique in teaching English prosody. Ten native speakers of Korean high school students with similar level of English proficiency participated in the poem self-study experiment. Five of them were grouped into the experimental group and the remaining five into the control group. One popular English poem from a high school textbook was selected and its recording by a professional native speaker of English was used in the experiment. The members of the two groups made a recording of the poem both before and after the experiment. For the study material, the experimental group used their own recorded utterances with their prosody cloned from the professional English speaker, while the control group used the utterances of the professional speaker alone. The acoustic analysis of the recordings by the prosodic foot both before and after the experiment showed that the experimental group performed slightly better than the control group in the realization of the intensity contour of the poem. There were no significant differences in the realization of the intonation contour and segmental durations between the two groups. The recording after the experiment was also subjectively evaluated by a native speaker of English and the scores for the experimental group were slightly higher than the control group. These findings suggest that the use of English poems with the help of the prosody cloning technique is a potentially viable approach to teaching English intonation to high school students. A long-term study with more students is necessary.

비만청소년의 인지ㆍ정서ㆍ행동 중재 (The Effect of the REBT Group Program on the Weight Control of Obese High School Girls)

  • 박충선
    • Child Health Nursing Research
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    • 제7권2호
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    • pp.213-224
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    • 2001
  • This study was conducted to identify the effect on the weight control of the REBT group program as a nursing intervention. For this purpose, non-equivalent control group design with pretest and posttest and follow-up test as quasi-experiment was used. Subjects of the study were consisted of twenty-four obese girls (Experimental group: 10, control group: 14) who appeared to having above 20% of the body mass index from ane high school in M city. The whole program was carried out from January to June, 2000. Used dependent variables for evaluating the effect of the REBT group program including were weight control belief(rational thinking, emotion about exercise, eating self-efficacy, eating behavior), body mass index and serum lipids(total cholesterol, triglyceride, low-density lipoprotein, high-density lipoprotein). For evaluating the effect of the program, dependent variables was analyzed by experimental stages three times; the first week, the fourth week, and the eighth week since the experimental input began. Data were analyzed by the SAS PC+ program with t-test, repeated measure ANOVA to determine the effect of program. The results of this study can be summarized as follows; 1. After the REBT group program, only eating self-efficacy among the weight control belief of experimental group was significantly increased than that of control group. 2. After the REBT group program, body mass index of experiment group was significantly decreased than that of control group. 3. After the REBT group program, triglyceride and low density lipoprotein among the serum lipids in the experiment group were significantly decreased than those of control group.

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Increased accuracy in dictation by Korean college students when using the Korean alphabet

  • 정윤걸
    • 영어어문교육
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    • 제11권1호
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    • pp.1-15
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    • 2005
  • The purpose of this study was to investigate whether or not the use of the Korean alphabet increased the accuracy of English sentences Korean university students produced in dictation. The students were divided into three categories, beginning, intermediate, and advanced, based on the listening comprehension scores of a practice TOEIC test. The total population of 120 students were divided into two groups, control and experiment. In the first testing, the experiment group transcribed the English utterances on a practice TOEIC tape into phonological writing in Korean and then later changed the Korean writing into English words and sentences. In the second testing, the control group became the experiment group and used the Korean alphabet in transcribing the English sounds. Statistically significant differences were found in the improvement of accuracy in dictation when the Korean alphabet was used, especially for the beginning and intermediate students. By using the Korean alphabet as the phonological representation of the sounds, the students in the experiment group produced more accurate English words than the control group who went directly from the English utterances to writing in English. Statistically significant results were not produced for the advanced students. The significance of the present study relates to the need to add to the paucity of available data on the use of the Korean alphabet in teaching listening comprehension.

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발반사 마사지가 여성노인의 수면과 피로에 미치는 효과 (The Effects of Foot Reflexology Massage on Sleep and Fatigue of Elderly Women)

  • 진수진;김영경
    • 성인간호학회지
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    • 제17권3호
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    • pp.493-502
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    • 2005
  • Purpose: To investigate the effects of foot reflexology massage on sleep and fatigue of elderly women. Method: The study was performed from April thru July of 2004 on the nonequivalent control group non-synchronized quasi-experimental design. Fifty elderly women were selected for each group. The foot reflexology massage was performed for 45 minutes every three days for experimental group. The data were analyzed using the Cronbach's $\alpha$, Chi-Square test, t-test and Repeated measures ANOVA and Bonferroni. Result: 1. The sleep score of the experiment group is significantly higher than that of the control group(t=-5.944, p=.000). 2. For the experiment group, it is seen that the sleep score increases as the frequency of the foot reflexology massage increases(F=96.362, p=.000). 3. The fatigue score of the experiment group is significantly lower than that of the control group(t=4.356, p=.000). 4. For the experiment group, the fatigue is relieved gradually as the frequency of the foot reflexology massage increases(F=118.444, p=.000). Conclusion: Based on the results described above, it is considered that the foot reflexology massage is effective for elderly women in promoting a good sleep and relieving the fatigue.

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압전 재료를 이용한 셸형 복합적층판의 진동제어에 대한 실험 (Experiments on Vibration Control of Laminated Shell Structure with Piezoelectric Material)

  • 황우석;고성현;박현철
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2003년도 춘계학술대회논문집
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    • pp.153-156
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    • 2003
  • Many researchers have tried to develop the piezoelectric shell element and verified them with the benchmarking problem of the piezoelectric bimorph beam since there is no experimental result for the control of shell structure with piezoelectric sensor/actuator. In this paper, the experiments are designed and performed to verify the control Performance of piezoelectric sensor/actuator on the shell structure. PVDF is easy to be attached on the surface of a shell structure but makes weak control forces. On the contrary, PZT makes control forces large enough to control the structure, but it is not easy to make a PZT element with curvature. To use PVDF as an actuator, the structure should be designed as flexible as possible and the voltage amplifier could make high control voltage. PVDF actuator powered by a voltage amplifier that generates output voltage from -200 to +200 volts, shows little control performance to control the vibration of an arch type shell structure. The performance of sensor looks good and the negative velocity feedback control works perfectly. The actuator voltage seems to be too small to verify the control effect Quantitatively. An experiment with high voltage amplifier is scheduled to verify the control effect Quantitatively.

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Identification and Control of Model Helicopter in Hovering

  • Park, Duckgee;Yang, Dong-Hoon;Park, Moon-Soo;Hong, Suk-Kyo
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2002년도 ICCAS
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    • pp.63.2-63
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    • 2002
  • ● Introduction ● System Identification ● PD Controller Design ● Verifying the Model & Simulation ● Experiment for Attitude Control ● Results ● Conculsions

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A MFC Control Algorithm Based on Intelligent Control

  • Lee, Seok-Ki;Lee, Seung-Ha;Lee, Yun-Jung
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2003년도 ICCAS
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    • pp.1295-1299
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    • 2003
  • The Mass Flow Controller(MFC) has become crucial in semiconductor manufacturing equipments. It is an important element because the quality and the yield of a semiconductor process are decided by the accurate flow control of gas. Therefore, the demand for the high speed and the highly accurate control of MFCs has been requested. It is hard to find an article of the control algorithm applied to MFCs. But, it is known that commercially available MFCs have PID control algorithms. Particularly, when the system detects the flow by way of heat transfer, MFC control problem contains the time delay and the nonlinearity. In this presentation, MFC control algorithm with the superior performance to the conventional PID algorithm is discussed and the superiority is demonstrated through the experiment. Fuzzy controller was utilized in order to compensate the nonlinearity and the time delay, and the performance is compared with that of a product currently available in the market. The control system, in this presentation, consists of a personal computer, the data acquisition board and the control algorithm carried out by LabWindows/CVI program on the PC. In addition, the method of estimating an actual flow from sensor output containing the time delay and the nonlinearity is presented. In conclusion, according to the result of the experiment, the proposed algorithm shows better accuracy and is faster than the conventional controller.

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The Effects of Different Concentrations of Glycine and Cysteine on the Freezability of Moghani Ram Spermatozoa

  • Khalili, B.;Jafaroghli, M.;Farshad, Abbas;Paresh-Khiavi, M.
    • Asian-Australasian Journal of Animal Sciences
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    • 제23권3호
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    • pp.318-325
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    • 2010
  • Two experiments were designed to evaluate the effects of the amino acids glycine and cysteine on cryopreservation of ram spermatozoa. After primary evaluation of collected ejaculates, the semen samples were pooled and diluted 1:4 before cooling (experiment 1) and freezing (experiment 2) with Tris-Citrate-Fructose-Yolk (TCFY) extender supplemented with different concentrations of glycine and cysteine (5, 10, 15 and 20 mM). As the control, semen was diluted and frozen in the extender without amino acids. Motility, viability and membrane integrity were assessed as the parameters for semen quality in the first experiment. In the second experiment, motility, progressive motility, viability, membranes and acrosome integrity were evaluated after the freezing-thawing process. The results of the first experiment indicated that the addition of 10 and 15 mM cysteine compared to the control (basic) extender significantly increased (p<0.01) the motility, viability and membrane integrity of spermatozoa after cooling. However, further increasing these amino acids up to 20 mM had a significant negative effect (p<0.05). Our results showed no significant differences (p>0.05) between 5 mM glycine compared to 5 mM cysteine and between 20 mM glycine and 20 mM cysteine. The results of experiment 2 showed that the amino acids significantly improved post-thaw motility, progressive motility, viability, membranes and acrosome integrity of ram spermatozoa. These positive effects were observed at concentrations between 5 to 15 mM of glycine and cysteine, with the best results at 15 mM. Further increasing of amino acid concentrations significantly decreased the post-thaw characteristics of spermatozoa, but the results showed that cysteine was better than glycine and control extenders. The data indicated that addition of glycine or cysteine to the freezing extender can be recommended for cryopreservation of ram spermatozoa. However, further studies are still needed to determine the effect of such addition on fertility in farm animals.

경추의 전신조정 관절치료가 좌우 관절가동범위에 미치는 영향 (The effect of left & right range of motion according to general coordination manipulation treatment on cervical)

  • 김형수;문상은;채정병;김은영
    • 대한물리치료과학회지
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    • 제10권2호
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    • pp.112-122
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    • 2003
  • The purpose of this study is to search effect that GCM joint treatment gets to right and left range of motion of neck, lumbar, trunk and anke joint. Estimated body deformity using GCM body type assesment chart then measured range of motion of each region. After control group did as act freely after do experiment premeasurement control group did postmeasurement. Each region was measured by measurer who each subject person differs. Experimental group did GCM joint treatment and all measurements each region by measurer who each subject person differs three times measured. When measure with each measurement, measured after leave and walk time interval for 10 minutes. For the analysis of the resulr of experiment the results is change amount comparison increased to keep in mind except ankle joint's dorsiflexion before experiment of experimental group and control group(P<.05). Before an experiment and after an experiment of experimental group, differed to keep in mind in right and left comparison of neck rotation, dorsiflexion, plantaflexin of ankle joint in change amount comparison(P<.05). Neck lateral flexion appears and displayed significantly level right and left difference than rotation after experiment of experimental group(P<.05). Because dorsiflexion, plantefleaion of ankle joint became similar right and left significantly difference did not appear(P<.05).

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