• 제목/요약/키워드: experimental journal

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Forward-Looking Ultrasound Imaging Transducer : II. Fabrication and Experimental Results

  • Lee, Chankil
    • The Journal of the Acoustical Society of Korea
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    • 제15권2E호
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    • pp.76-84
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    • 1996
  • The experimental testing results of the large-scale version of a forward-looking ultrasound imaging catheter(FLUIC) are presented, along with the fabrication techniques used, experimental methods, and comparisons of the measured and simulated results. The transducer model is verified by measuring the electrical impedance of the transducer. The pulse width, beamwidth, and the dynamic range for both transmit and pulse-echo response of the fabricated FLUIC are also analyzed. The experimental results conformed its forward-looking imaging capability and the sources of discrepancies between the simulated and experimental beam profiles are addressed.

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여고생의 성적 자기주장 프로그램 참여 효과 (Effects of a Sexual Assertiveness Training Program in High School Girls)

  • 장순복;이선경;김영란
    • 대한간호학회지
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    • 제33권5호
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    • pp.659-667
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    • 2003
  • Purpose: This study was done to develop an applicable training program for high school girls on sexual assertiveness. Method: The design combined methodological study and non-synchronized quasi experimental study designs. The participants were 174 high school girls from two schools. Two questionnaires were used, one consisted of 23 questions on self efficacy and the other, of 22 items on sexual assertiveness. The SPSS 10.0 program was used for data analysis. Experimental group 1(3 hour program) and experimental group 2(6 hour program) were received on sexual assertiveness. The sexual assertiveness program was carried out by members of the research team. There were no differences in demographic characteristics between control group, experimental group 1, and experimental group 2. Result: There was no significant increase in self efficacy scores in experimental group lover the control group, but there was a significant increase in sexual assertiveness scores in the experimental group lover the control group. There was an increase in self efficacy scores in experimental group 2 over the control group, but it was not significant. There was a significant increase in sexual assertiveness scores in experimental group 2 over the control group. There was no significant increase in self efficacy scores in the experimental group 2 over the experimental group 1, and there was no significant increase in sexual assertiveness scores in experimental group 2 over the experimental group I. Conclusion: The results show that a 3 hour program was as effective as a 6 hour program for sexual assertiveness. Therefore, it is advisable to use a hour program for clinical convenience. But further study is needed to determine the lasting effect on sexual assertiveness.

하악골 측방변위가 가토의 하악두에 미치는 영향에 관한 실험적 연구 (AN EXPERIMENTAL STUDY ON THE MANDIBULAR CONDYLAR GROWTH FOLLOWING LATERAL DISPLACEMENT IN RABBIT)

  • 신동용;서정훈
    • 대한치과교정학회지
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    • 제22권2호
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    • pp.427-447
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    • 1992
  • The purpose of this study was to evaluate the effect of the lateral displacement on the mandibular condylar growth in the rabbit. The experimental animals were twenty White NewZealand rabbits of 4-week old. Ten of them was used as control group, and experimental animal was composed of remaining ten. Laterodeviation appliance was made of cast base metal and appliance was cemented with resin in permanent fashion. Experimental group were sacrificed at 1, 2, 4, 6, 8 weeks form beginning of the experiment. Both of temporomandibular joint were prepared for histologic study. The conclusions are: 1. In control group, there was slight increase of proliferative zone and hypertrophic zone at 2-week control animal and slight reduction at 4-week. 6-week and 8-week control animal were similiar to 1-week control animal. 2. In right mandibular condyle of experimental group, 2-week experimental animal showed marked increase of proliferative zone and hypertrophic zone at posterior surface of condylar head. In 8-week experimental animal marked increase at anterior surface of anticular surface is observed. 3. In left mandibular condyle of experimental group, proliferative zone and hypertrophic zone were reduced at 1-week experimental animal and slight increase at 2-week. Proliferative zone and hypertrophic zone were reduced at 4-week experimental animal and were slightly increased at 6 week. 4. After 8 weeks, right and left condyle were not different in experimental group. The condylar cartilage was stabilized 8 weeks after the experiment. No marked traumatic change was seen, but minute focal bleeding was seen at articular cavity in 1-week, 2-week and 4-week experimental animal. 6-week and 8-week experimental animal did not show bleeding tendency in articular cavity.

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A versatile small-scale structural laboratory for novel experimental earthquake engineering

  • Chen, Pei-Ching;Ting, Guan-Chung;Li, Chao-Hsien
    • Earthquakes and Structures
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    • 제18권3호
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    • pp.337-348
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    • 2020
  • Experimental testing has been considered as one of the most straightforward approaches to realize the structural behavior for earthquake engineering studies. Recently, novel and advanced experimental techniques, which combine numerical simulation with experimental testing, have been developed and applied to structural testing practically. However, researchers have to take the risk of damaging specimens or facilities during the process of developing and validating new experimental methods. In view of this, a small-scale structural laboratory has been designed and constructed in order to verify the effectiveness of newly developed experimental technique before it is applied to large-scale testing for safety concerns in this paper. Two orthogonal steel reaction walls and one steel T-slotted reaction floor are designed and analyzed. Accordingly, a large variety of experimental setups can be completed by installing servo-hydraulic actuators and fixtures depending on different research purposes. Meanwhile, a state-of-the-art digital controller and multiple real-time computation machines are allocated. The integration of hardware and software interfaces provides the feasibility and flexibility of developing novel experimental methods that used to be difficult to complete in conventional structural laboratories. A simple experimental demonstration is presented which utilizes part of the hardware and software in the small-scale structural laboratory. Finally, experimental layouts of future potential development and application are addressed and discussed, providing the practitioners with valuable reference for experimental earthquake engineering.

실험모달데이터를 사용한 구분모두 합성법의 개선 (Improved component mode synthesis method using experimental obtained modal data)

  • 장경진;지태한;박영필
    • 소음진동
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    • 제6권1호
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    • pp.97-106
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    • 1996
  • This paper presents systematic study of the experimental application of a free-interfaced component mode synthesis method. In the free-interfaced component mode synthesis method, an error the to truncated higher modes and neglected ineria loadings on a component from the connected component is inherent. Also, it is difficult to directly use experimental modal data in a modal synthesis method which links experimental model to finite-element model because of many inconsistencies between experimentally obtained and analytically obtained modal vectors and missing degrees-of-freedom (DOFs) such as rotational DOFs. In order to solve these problems, three methods, the first one based on attaching auxiliary weights to the connection points, the second one utillizing the normalization of experimental modal vector, and the third one generating smoothed and expanded experimental mode shapes, are studied in this paper. Finally, the study is illustrated for a flat-plate structure by using simulated and measured experimental data.

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고등학교 가정과 피복재료 탐구실험학습 모형 개발 (A Study on the Development of Scientific Experimental Model for the Home Economics Textiles Class in High School)

  • 라상숙;이전숙;김용숙
    • 한국가정과교육학회지
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    • 제10권1호
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    • pp.153-169
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    • 1998
  • The purposes or this study were to develop the scientific experimental model, experimental guidelines for teachers, experiment planning & report form for students, and evaluation scales for the Home Economics Textiles class in high school. First, through review of literature concerned, scientific experimental model was defined, and the usefulness of this model on the teaching situation testified on other subjects such as Physics and Bilolgy, was reviewed. Secondly, scientific experimental model, experimental guidelines for teachers, experiment planning & report form for students, and evaluation scale were developer on the bases on APU evaluation model, experimental guidelines for teachers, experiment planning & report form for students, evaluation scale applicable to the teaching situation ere established by analysing the significant differences scientifically.

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2001: A Space Odyssey as a Work of Experimental Cinema: Focused on Its Convergence of Technical Innovations and Aesthetic Challenges

  • Chodorov, Pip;Cha, Minchol
    • International Journal of Advanced Culture Technology
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    • 제7권2호
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    • pp.113-124
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    • 2019
  • Stanley Kubrick's 1968 film titled 2001: A Space Odyssey has generally been considered as a monumental piece of mainstream epic science-fiction. However, this film can be evaluated as having properties of experimental cinema by boldly trying technical innovation and aesthetic experiment in various aspects. From the filmmaker's process to filmic structure, technical innovations, screening method, $mise-en-sc\grave{e}ne$, cinematic style and its (auto-)reflexivity, 2001: A Space Odyssey is highly experimental. We will attempt to separate out aspects of 2001: A Space Odyssey that derive explicitly from traditions in experimental cinema, whether adopting those traditions or innovating within them, by identifying the film's experimental strategies and relating them to other experimental films that came before and after. This will show that the purely formal characteristics of the film's conception carry meanings on their own relating to Kubrick's personal expression, ideas about cinema and philosophy that go beyond the scope of the film's narrative.

뇌졸중 환자를 위한 환측 상지 경혈지압마사지와 손마사지의 효과 비교 연구 (Comparison of the Effects of Meridian Massage and Hand Massage on the Affected Upper Extremity of Stroke Patients)

  • 강현숙;강지순;석소현
    • 기본간호학회지
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    • 제14권3호
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    • pp.270-279
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    • 2007
  • Purpose: In this study, the effects of meridian massage and hand massage on the affected upper extremity of patients with a stroke were identified. Method: A nonequivalent control group non-synchronized design was used. Participants were 84 (Experimental. 1: 28, Experimental. 2: 28, Control.: 28) patients with a stroke who were hospitalized in K oriental medical center. Experimental treatment for patients in experimental group 1 was the meridian massage for 10 minutes daily for 2 weeks, and for those in experimental group 2, hand massage for 2 minutes, 30 seconds each, daily for 2 weeks. Outcome variables were upper extremity function (grip power, shoulder pain, edema, ROM), ADL, and depression. Data were analyzed using SPSS PC+ version. Results: The score for upper extremity functions and ADL were significantly higher in experimental group 1 who had meridian massage than for experimental group 2 or the control group. Experimental group 1 showed less depression than experimental 2 or the control group. Conclusion: Meridian massage can be an effective nursing intervention to improve upper extremity function and ADL, and to decrease depression in patients stroke who have had a stroke.

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실험적 교흔에 관한 연구 (A Study on the Experimental Bite Marks)

  • 김창규;이승우
    • Journal of Oral Medicine and Pain
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    • 제8권1호
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    • pp.5-31
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    • 1983
  • Author studied the changes of experimental bite marks using a special apparatus which was equipped with adults human resin dental model(in accordance with the time elapsed). The experimental bite marks were made in the forearm of 20 healthy men and in the buttock of 10 Durac pigs with various pressure. In making the experimental bite marks, the left forearm was pressed with a load of 70kgs and 130kgs for 3 seconds, and 5 of the 10 pigs were sacrigiced immediately after making the bite marks. Through visual examinations, photographs and rubber base impressions of bite marks, following results were obtained : 1. The durations of measurable indentation of the experimental bite marks in the forearm of living human subject were depended upon the degree of the pressure and the length of the pressure time applied in making the bite marks. 2. As a physiological responds to a physical stimulus of biting, indentation, bruising, edema and subepithelial bleeding were observed in the experimental bite marks in the forearm of living human. And the experimental bite marks in the buttok of pigs which were sacrificed immediately after making the bite showed only indentation and subepithelial bleeding in addition to postmortem changes. 3. The duration of measurable indentation of the experimental bite marks in the buttock of pigs which were sacrificed immediatly after making the bite were much longer than those of the living pigs. 4. All of the measurements of the experimental bite marks were not matched completly with those of the model which was used in making the bite marks.

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집단미술치료가 결손가정아동의 정서에 미치는 영향 -우울, 불안, 충동성 중심으로- (Group Art Therapy Program of Low-income Broken; Effects, on Depression, Anxiety and Impulsivity)

  • 김귀복
    • 한국생활과학회지
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    • 제17권6호
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    • pp.1237-1248
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    • 2008
  • This is to study the effects of the program of group art therapeuties for the low-income bracket children's melancholy and uneasiness. The experimental group is 19 children at their option of all 38 children in P child center at J city, Jeonbuk. The program has been going on after-school hours program at the facilities at 16times from May. 4 to August. 17, 2007. I have made the before-medium-after examination the COD, RCMAS and K-MFF through Repeated Measures ANOVA. The result is as follows, The melancholy of experimental group in comparison with that of control group is reduced by control group 0.42 and experimental group 2.67. And in lower rank group, the melancholy of experimental group for control group is dropped in the same way. In uneasiness, by the decrease of control group 0.10, experimental group 0.33, the uneasiness of experimental group for that of control group is decreased. In all drive, the drive of experimental group for that of control group is decreased by control group 0.12 and experimental group 0.33. And similarly, in all lower field, the drive of experimental group is reduced for that of control group. It is through our help to learn the proper way that they express their experience before the group members, listen to another person's story with attention, recognize their own and other's emotion, and are aware of feeling and action.