• 제목/요약/키워드: subject effect

검색결과 3,149건 처리시간 0.033초

Identification of indirect effects in the two-condition within-subject mediation model and its implementation using SEM

  • Eujin Park;Changsoon Park
    • Communications for Statistical Applications and Methods
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    • 제30권6호
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    • pp.631-652
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    • 2023
  • In the two-condition within-subject mediation design, pairs of variables such as mediator and outcome are observed under two treatment conditions. The main objective of the design is to investigate the indirect effects of the condition difference (sum) on the outcome difference (sum) through the mediator difference (sum) for comparison of two treatment conditions. The natural condition variables mean the original variables, while the rotated condition variables mean the difference and the sum of two natural variables. The outcome difference (sum) is expressed as a linear model regressed on two natural (rotated) mediators as a parallel two-mediator design in two condition approaches: the natural condition approach uses regressors as the natural condition variables, while the rotated condition approach uses regressors as the rotated condition variables. In each condition approach, the total indirect effect on the outcome difference (sum) can be expressed as the sum of two individual indirect effects: within- and cross-condition indirect effects. The total indirect effects on the outcome difference (sum) for both condition approaches are the same. The invariance of the total indirect effect makes it possible to analyze the nature of two pairs of individual indirect effects induced from the natural conditions and the rotated conditions. The two-condition within-subject design is extended to the addition of a between-subject moderator. Probing of the conditional indirect effects given the moderator values is implemented by plotting the bootstrap confidence intervals of indirect effects against the moderator values. The expected indirect effect with respect to the moderator is derived to provide the overall effect of moderator on the indirect effect. The model coefficients are estimated by the structural equation modeling approach and their statistical significance is tested using the bias-corrected bootstrap confidence intervals. All procedures are evaluated using function lavaan() of package {lavaan} in R.

중소기업 기술혁신분야 연구개발(R&D)투자의 경제적 효과 분석 (The Economic Effect Analysis of R&D Investment in Small & Medium Enterprises Technological Innovation Areas - Centering on the Number of Supporting Subject and the Amount of Supporting Fund -)

  • 박경주
    • 대한안전경영과학회지
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    • 제9권5호
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    • pp.135-145
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    • 2007
  • In this study, as the result of analyzing the relationship and influence between economic outcome and R&D supporting investment, the number of supporting subjects among the technological innovational areas of SMEs, it is as below. First, as the economic result of analyzing companies from the investment in R&D of technological innovational areas of minor companies, the number of supporting subjects and amount of R&D have relationship with increase of sales and export amount, employee reduction & the effect of new job creation shows positive correlation with the effect of import replacement. Second, as analyzing the influence of the investment in R&D has economic effect from of technological innovational minor companies. This is thought that the financial and R&D support increase a significant effect on economical, technical against SMEs.

대타자와 주체의 변증법적 인터페이스 탐색 -크리스티나 로제티의 「도깨비 시장」 읽기 (The Exploration of the Dialectical Interface of Other and Subject: A Reading of Christina Rossetti's "Goblin Market")

  • 김경순
    • 영어영문학
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    • 제53권2호
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    • pp.219-241
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    • 2007
  • This study takes its point of departure from Lacanian psychoanalysis and explores the point that an irremediable gap in the human subject can be illuminated in terms of the Lacanian categories, fantasy, symptom, gaze or voice as cause of desire of the Other. With respect to the category of the symptom, Lacan claims that the Other is always already there in the constitution of the subject, that is, the relation of the subject to the Other that is overwhelming as well as attracting the subject. Chapter II deals with the unthought, excessive ground of the conscious that borders on the subject, as is the case of self-excentric aspect of the man. Indeed, in Lacan's early work, the subject is essentially a relationship to the Other as desire(objet petit a), and there is no such thing as a symptom or fantasy without some subjective involvement. Lacanian unknown real, perpetual excess as the cause of desire animates the subject even as it threatens to blast it apart. The structures that establish the lines of desire in every individual are derived from an ineluctably intersubjective field. The Other is always already there in the constitution of the subject. In the final years of Lacan's teaching we find a kind of universalization of the symptom and almost everything that is becomes in a way symptom. Symptom, embodied in Laura in "Goblin Market," is her only substance, the only positive support of her being. By looking at the Laura's symptom in chapter III we gain an insight into the forbidden domain, into a real space that should be left unseen and unthought. The voice of goblin men therefore functions as a sublime object that is animating as well as dominating element even as it threatens to disintegrate the subject. Objet petit a as a sublime object that must be excluded in reality returns in the real, taking on a certain materiality which has an effect on Laura, that is, animates Laura's desire. Objet petit a is a real object, signifying nothing. In conclusion, the theoretical importance of Lacanian psychoanalysis is the relation between a subject and an Other as Objet petit a.

초음파 치료에서 연령과 사마귀 발생시기가 사마귀 치유에 미치는 효과 (Effects of both Subject Age and Onset of Warts Influence for Curing in Ultrasound Treatment)

  • 이은화;정재경;황미경
    • 한국전문물리치료학회지
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    • 제4권2호
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    • pp.51-58
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    • 1997
  • The object of this study were twofold, namely, to study on (1) effect of using ultrasound therapy for curing warts (2) any relation between a cure for warts and onset of warts, as well as subject age. Our subjects, composed of 22 people from age 12 to 49, were assigned to two groups, experimental group and control group. We experimented for 8 session on 12 people in the experimental group by using ultrasound therapy to observe any morphological change in the warts or disappearance of a pain. However, we did not cure warts in the other group, control group. The result of the study are as follows. (1) Ultrasound therapy has an effect on curing warts. (2) Neither condition, onset of warts or subject age, had no influence on a cure for warts.

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Tension stiffening effect of RC panels subject to biaxial stresses

  • Kwak, Hyo-Gyoung;Kim, Do-Yeon
    • Computers and Concrete
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    • 제1권4호
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    • pp.417-432
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    • 2004
  • An analytical model which can simulate the post-cracking nonlinear behavior of reinforced concrete (RC) members such as bars and panels subject to uniaxial and biaxial stresses is presented. The proposed model includes the description of biaxial failure criteria and the average stress-strain relation of reinforcing steel. Based on strain distribution functions of steel and concrete after cracking, a criterion to consider the tension-stiffening effect is proposed using the concept of average stresses and strains. The validity of the introduced model is established by comparing the analytical predictions for reinforced concrete uniaxial tension members with results from experimental studies. In advance, correlation studies between analytical results and experimental data are also extended to RC panels subject to biaxial tensile stresses to verify the efficiency of the proposed model and to identify the significance of various effects on the response of biaxially loaded reinforced concrete panels.

Effect of scattered x-rays on subject contrast and image sharpness

  • Arimura, Hidetaka;Date, Takuji;Morikawa, Kaoru;Kubota, Hideaki;Matsumoto, Masao;Kanamori, Hitoshi
    • 한국의학물리학회:학술대회논문집
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    • 한국의학물리학회 1999년도 Japanese Journal of Medical Physics
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    • pp.278-281
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    • 1999
  • The purpose of this study is to investigate the effect of the scattered x-rays on the subject contrast and image sharpness for various tube voltages. For the purpose, we measured the scatter-to-primary ratio(SPR) for the tube voltages f 50 to 100kV and obtained the tube voltage dependence of the subject contrast of an aluminum plate in a polymethyl methacrylate(PMMA) phantom. Furthermore, the overall modulation transfer functions(MTFs), which consist of MTFs of a screen-film system and scatter FTMs, were obtained for tube voltages of 50 to 100 kV. The subject contrast decreased with the tube voltage due to that the SPR increased with the tube voltage and that the difference in effective linear attenuation coefficients between the object and its surroundings decreased with the tube voltage. The maximum frequency of the overall MTF decreased from about 2 mm$\^$-1/ to 1 mm$\^$-1/ with the tube voltage increasing from 50 to 100 kV.

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노화과정(老化過程)의 흰쥐에서 보폐산(補肺散)이 폐(肺)의 대사효소계(代謝酵素系)에 미치는 영향(影響) (Through observing effect of BOPEASAN(BPS) on an agmg white rat's Metabolic Enzyme System)

  • 김인수;고광찬;오민석;송태원
    • 혜화의학회지
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    • 제8권1호
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    • pp.643-657
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    • 1999
  • Through observing effect of BOPEASAN(BPT) on an aging white rat's metabolic enzyme system, the following conclusions were addressed 1. The quantity of the lipid peroxide in lung of was decreased meaningfully in all of experimental subject groups, relatively to counterpart groups. 2. Cytochrome P-450, Cytochrome b5, NADPH-Cytochrome P45, was decreased meaningfully in the experimental subject groups B,C and D. 3. superoxide dismutase, catarase, grutathione peroxidase, was increased meaningfully in the experimental subject groups B.C and D. 4. glutathione, glutathione S-transferase, glutathione redutase, ${\gamma}$-Glutamylcytein synthetase, had no meaningful change in the experimental subject groups. Regarding the above conclusions, the Bopeasan was affecting positively on both lipid peroxide a nd the enzyme system, as well as it has efficacy of suppressing the phenomena of aging, Therefore, the Bopeasan is, hereafter, expected to be applied clinically.

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

  • 정우식;윤태원;최연정;이홍균
    • 대한물리의학회지
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    • 제8권2호
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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.

화학물질 우선순위 선정기법(CRS)을 활용한 허가대상 후보물질 선정 연구 (A Study on the Selection of Candidates for Substances Subject to Permission Using Chemicals Ranking and Scoring (CRS))

  • 김효동;박교식
    • 한국산업보건학회지
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    • 제32권3호
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    • pp.253-267
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    • 2022
  • Objectives: This study was performed to check whether the CRS (Chemical Ranking and Scoring) system is appropriate as a method to determine substances as candidates for substances subject to permission and to apply this system to the selection of candidates for substances subject to permission. Methods: A risk score was obtained by multiplying the hazard score and the exposure score and then ranking them. The hazard sub-indicators are carcinogenicity, germ cell mutagenicity, reproductive toxicity, specific target organ toxicity-repeated exposure, respiratory sensitization and endocrine disrupting chemicals. Exposure sub-indicators are persistence, bioaccumulation and emission volume. Sensitivity analysis was performed for missing values. Correlation analysis and multivariable linear regression analysis were performed among hazard, exposure and risk in order to confirm that CRS was an appropriate method. Results: As a result of the sensitivity analysis on missing values, it was confirmed that the effect on the risk ranking was not sensitive. Correlation and regression analysis confirmed that exposure had a greater effect on risk than hazard. Conclusions: The CRS system, which derives a risk score using a hazard and exposure score, is judged to be appropriate as a method for the selection of preliminary of candidates for substances subject to permission. Benzene, cadmium, nickel, and cobalt were selected as priority candidates for substances subject to permission.

21세기 대학도서관의 주제별 자료실 조직모형 연구 (A Study on the Subject Specialization System Model of University Libraries in the 21st Century)

  • 정재영;남태우
    • 한국문헌정보학회지
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    • 제38권1호
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    • pp.173-197
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    • 2004
  • 대학도서관의 조직과 인원이 이용자와 서비스를 중심으로 바뀌어 가는 과정에서 나타나기 시작한 주제별 자료실 조직구조는 국내 185개 대학도서관중 56개 도서관(30.2%)이 채택하고 있는 것으로 조사되었으며 지속적으로 그 수가 늘고 있는 것으로 파악되었다. 이에 따라 보다 한국적 상황에 맞게 적용시키고 효과를 극대화하기 위해서는 자관의 현실과 상황을 고려한 체계적인 절차와 과정을 통해 준비되어져야 할 필요가 있다. 또한, 적용모델에 있어서는 국내 대학도서관 현실과 물리적 지원의 한계를 고려할 때 도서관의 전체적인 조직구조에 있어서는 기존의 기능별조직을 유지하고 자료구분 및 참고봉사를 포함한 이용자 서비스 부분만을 주제별조직구조로 유지하는 혼합형 구조가 바람직하며 인적요소와 조건이 충족될 경우 일체형 구조를 지향하는 것이 바람직한 것으로 파악되었다.