• Title/Summary/Keyword: domain of influence

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Pressure equalization of rainscreen facades: Analysis of the field data in the frequency domain

  • Kumar, K. Suresh;Wisse, J.A.
    • Wind and Structures
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    • v.4 no.2
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    • pp.101-118
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    • 2001
  • This paper reports the field measurements concerning pressure equalization of rainscreen facades carried out at the Technical University of Eindhoven (TUE) in the Netherlands. The field facility including the details of test panel, meteorological tower, instrumentation, data collection and analysis is presented. Results of investigations into cavity response for various leakage and venting configurations are discussed. Frequency domain techniques have been utilized to show the influence of wind as well as facade characteristics on the pressure equalization performance. Further, this paper presents an early attempt to synthesize the experimental results into existing building codes.

Experimental and numerical validation of guided wave based on time-reversal for evaluating grouting defects of multi-interface sleeve

  • Jiahe Liu;Li Tang;Dongsheng Li;Wei Shen
    • Smart Structures and Systems
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    • v.33 no.1
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    • pp.41-53
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    • 2024
  • Grouting sleeves are an essential connecting component of prefabricated components, and the quality of grouting has a significant influence on structural integrity and seismic performance. The embedded grouting sleeve (EGS)'s grouting defects are highly undetectable and random, and no effective monitoring method exists. This paper proposes an ultrasonic guided wave method and provides a set of guidelines for selecting the optimal frequency and suitable period for the EGS. The optimal frequency was determined by considering the group velocity, wave structure, and wave attenuation of the selected mode. Guided waves are prone to multi-modality, modal conversion, energy leakage, and dispersion in the EGS, which is a multi-layer structure. Therefore, a time-reversal (TR)-based multi-mode focusing and dispersion automatic compensation technology is introduced to eliminate the multi-mode phase difference in the EGS. First, the influence of defects on guided waves is analyzed according to the TR coefficient. Second, two major types of damage indicators, namely, the time domain and the wavelet packet energy, are constructed according to the influence method. The constructed wavelet packet energy indicator is more sensitive to the changes of defecting than the conventional time-domain similarity indicator. Both numerical and experimental results show that the proposed method is feasible and beneficial for the detection and quantitative estimation of the grouting defects of the EGS.

A study on the relationship between student variables and English accomplishment of high school students (고등학교 학생들의 학습자 변인과 영어 학업 성취도 사이의 상관관계 연구)

  • Shim, Soon-Hee
    • English Language & Literature Teaching
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    • v.11 no.4
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    • pp.261-286
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    • 2005
  • Lately, teaching methods and instruments have become student-centered and are directed towards developing a communicative competence of learners. However, compared with that of other countries, the level of our students English is not very good. I guess the reason is that our English education is focused on the uniformal teaching methods regardless of the differences of intelligence, affective domains and study time. I tried to find the relationship between these factors and the students' English accomplishments. So I divided the students into 2 groups of superior and inferior students by the standard of intelligence, affective domain and study time and compared the scores between the groups in the fields of reading comprehension, grammar, pronunciation, accent, vocabulary, and listening. These were the results that followed: First, intelligence has a great influence students' English accomplishment in all fields. Second, affective domains such as motivation, anxiety, attitude, confidence, and studying time also have some influence on the students' English accomplishments. Third, the sequence of these factors according to their influence force are as follows: study time, anxiety, intelligence, motivation, attitude, and confidence. So we can conclude that we should teach English according to our students' ability in the field of intelligence and affective domains and should not ignore the individual differences they have.

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Performance Evaluation of a Clinical Decision Support System for Drug Prescriptions (처방조제지원시스템 도입성과 평가)

  • Cho, Kyoung-Won;Park, Jin-Woo;Chae, Young-Moon
    • The Journal of the Korea Contents Association
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    • v.11 no.4
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    • pp.312-320
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    • 2011
  • The goal of this paper is to examine the effects of a CDSS(Clinical Decision Support System) for drug prescription on organizational performance in medical institutions using POC(Point Of Care) systems. For achieving this goal, evaluation factors for influencing performance of information system were identified by using the performance evaluation model for CDSS. In the results, there was significant causality between each evaluation domain except system quality domain. In addition, the system quality of CDSS for optimal drug prescription has no influence on user satisfaction. But information quality has positive influence on user satisfaction which has also a positive influence on organizational performance.

The Influence of Quantization Table in view of Information Hiding Techniques Modifying Coefficients in Frequency Domain (주파수 영역 계수 변경을 이용한 정보은닉기술에서의 양자화 테이블의 영향력)

  • Choi, Yong-Soo;Kim, Hyoung-Joong;Park, Chun-Myoung
    • Journal of the Institute of Electronics Engineers of Korea CI
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    • v.46 no.1
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    • pp.56-63
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    • 2009
  • Nowdays, Most of Internet Contents delivered as a compressed file. It gives many advantages like deduction of communication bandwidth and transmission time etc. In case of JPEG Compression, Quantization is the most important procedure which accomplish the compression. In general signal processing, Quantization is the process which converts continuous analog signal to discrete digital signal. As you known already, Quantization over JPEG compression is to reduce magnitude of pixel value in spatial domain or coefficient in frequency domain. A lot of Data Hiding algorithms also developed to applicable for those compressed files. In this paper, we are going to unveil the influence of quantization table which used in the process of JPEG compression. Even thought most of algorithm modify frequency coefficients with considering image quality, they are ignoring the influence of quantization factor corresponding with the modified frequency coefficient. If existing algorithm adapt this result, they can easily evaluate their performances.

The study of high school student's activities of Marine Sports on the development of their sociality (고등학생의 해양스포츠 활동과 사회성 발달에 관한 연구)

  • Ji, Sam-Up
    • Journal of Fisheries and Marine Sciences Education
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    • v.18 no.3
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    • pp.329-340
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    • 2006
  • The purpose of this research is to know the influence of high school students' activities of Marine Sports on the development of their sociality by comparing students in this activities with those who are not in this activities. The objects of this research are high school students who live in Busan at present. The total number of the object is 146, including 74 students who participated in this organization and 72 students who didn't participate in this organization. We have reached the following conclusion after analyzing the materials according to the methods and procedures of the research. In the domain of activity, the students who are in Marine sport activities are statistically different from those who are not. In the domain of stability, the students who are in Marine sport activities are meaningfully different from those who are not. In the domain of ascendancy, the students who are in Marine sport activities are meaningfully different from those who are not. In the domain of sociability, the students who are in Marine sport activities are meaningfully different from those who are not. In the domain of self-control, the students who are in Marine sport activities are meaningfully different from those who are not.

Health promoting behavior of adolescents (청소년의 건강증진 행위)

  • So Hee Young;Kim Hyun Li
    • Journal of Korean Public Health Nursing
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    • v.12 no.2
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    • pp.107-121
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    • 1998
  • The purpose of this study was to test the revised Health Promotion Model of Pender and to determine the factors to promote health behavior for adolescents' smoking behavior. The subjects of the study was 783 boys of 4 high school students. among 39. schools locating in Daejeon metropolitan city. The data was collected from July 1st to 15th. 1997 by school health nurse The research tool were HPLP of Walker. Pender. General self-efficacy scale of Sherer. control scale was measured by subconcept of hardiness scale of Pollock. and perceived barrier. perceived benefit. activity-related-affect tool were made by researcher via literature review The data were analyzed by SAS program using frequency. t-test. ANOVA. Schefee test. regression. The results were as follows 1. The mean of total health promoting behavior was $2.27\pm.35$. Among sub domain of health promoting behavior, the highest score was interpersonal support$(2.72\pm.60)$. and the lowest was health responsibility $(1.58\pm.44)$. 2. There were statistically significant difference in total health promoting behavior according to religion. parenting style. school performance. girl friend. father's smoking of individual characteristics. 3. The socioeconomic status. smoking, parent pattern. family structure of individual characteristics and experience domain associated with perceived benefit. perceived barrier. activity-related affect. interpersonal influence of behavior-specific cognition and affect domain. The perceived barrier. self-efficacy. girl friend and father's smoking of interpersonal influence. and control explained $25.8\%$ of variance of health promoting behavior. From above results school health nurse has to emphasize on health responsibility for health promotion of adolescent. But they couldn't intervene for parent pattern. socioeconomic status. family structure of individual characteristics and experience domain. it could be possible for school health nurse to promote health of adolescents through improving perceived barrier. also develop program to increase self-efficacy and through parent health class for fathers. Above results point to the importance of including parents in smoking prevention effort targeting adolescents. Because increasing control also promotes health of adolescents. it should be studied further about the specific measure. To verify the variables for increasing the fitness of health promoting model. it needs further replication of the research.

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Quality of Life in Patients with Skin Disease (한국어판 Skindex-29를 통해 본 피부과 환자의 삶의 질)

  • Kim Min-Hi;Kim Ja-Hye;Yoon Hwa-Jung;Ko Woo-Shin
    • The Journal of Korean Medicine
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    • v.26 no.3 s.63
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    • pp.43-54
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    • 2005
  • Backgrounds : Many people think that ski disease has littel influence on the quality of life in patient, but various studios show that skin disease may produce a range of impacts on QOL. Nevertheless, there is much to be learned about the association between the duality of life and skin disease in the area of Oriental dermatology. Objectives : This study was conducted fe investigate the impact of the various skin diseases on QOL and explore prognostic factors that influence outcomes. Methods : 103 patients were recruited who filled out more than $90\%$ of the skindex-29 questionnaire. The function of sum scores and three domain scores with each skin disease were investigated, as well as the correlation of each domain scores. Results : The disease with the lowest qualify of life was atopic dermatitis. followed by eczematous dermatitis, seborrheic dermatitis and acne vulgaris in order. The sum scales showed significant correlation with three domain scores in atopic dermatitis, urticaria, allergodermia, acne vulgaris, psoriasis and seborrheic dermatitis, The correlation of all three domain scores was significant in atopic dermatitis, urticaria, allergodermia, and psoriasis. Conclusions : Tn this study, skin disease affects the quality of life in physical, social, and psychological factors- Thus, we must consider the quality of life as well as clinical severity inpatients with skin disease.

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Effects of Meister High School and Specialized Vocational High School' Students on Career Maturity in Problem Solving Ability Domain of Test for Enhanced Employ ability & Upgraded Proficiency (직업기초능력평가 문제해결능력이 마이스터고 및 특성화고 학생의 진로성숙도에 미치는 영향)

  • Hahm, Seung-Yeon
    • Journal of Fisheries and Marine Sciences Education
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    • v.26 no.3
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    • pp.597-610
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    • 2014
  • The purpose of this study was to inquiry of influence of Meister high school and specialized vocational high school' students on career maturity in problem solving ability domain of test for enhanced employ ability & upgraded proficiency. Research subjects and region were sophomore students of each one of Meister high schools and specialized vocational high schools in Gwangju region. The sample(N=481) was drawn from 2 high schools and collected data were analyzed with SPSS using t-test, Pearson correlation and Levene's test. Items of problem solving ability domain of test for enhanced employ ability & upgraded proficiency were used test items developed in 2012. Career maturity test in Careernet site was used test items developed in 2001 which was made up 3 domains such as attitude, ability and action and 8 sub-regions such as planning, attitude on the vocation, independence, self-understanding, rational decision-making, explore of information, knowledge of hope vocation and career exploration and preparation of action, and constituted 64 items. The results were as follows. Findings of the analysis in specialized vocational high school students demonstrated the positive results of rational decision-making and explore of information in problem solving ability test for enhanced employ ability & upgraded proficiency. Comparing career maturity influence on Meister high school with specialized vocational high school students about problem solving ability domain of test for enhanced employ ability & upgraded proficiency, Meister high school students' score were more high grade than specialized vocational high school students grade.

Concepts for Domain Wall Motion in Nanoscale Ferromagnetic Elements due to Spin Torque and in Particular Oersted Fields

  • Klaui, Mathias;Ilgaz, Dennis;Heyne, Lutz;Kim, June-Seo;Boulle, Olivier;Schieback, Christine;Zinser, Fabian;Krzyk, Stephen;Fonin, Mikhail;Rudiger, Ulrich;Backes, Dirk;Heyderman, Laura J.;Mentes, T.O.;Locatelli, A.
    • Journal of Magnetics
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    • v.14 no.2
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    • pp.53-61
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    • 2009
  • Herein, different concepts for domain wall propagation based on currents and fields that could potentially be used in magnetic data storage devices based on domains and domain walls are reviewed. By direct imaging, we show that vortex and transverse walls can be displaced using currents due to the spin transfer torque effect. For the case of field-induced wall motion, particular attention is paid to the influence of localized fields and local heating on the depinning and propagation of domain walls. Using an Au nanowire adjacent to a permalloy structure with a domain wall, the depinning field of the wall, when current pulses are injected into the Au nanowire, was studied. The current pulse drastically modified the depinning field, which depended on the interplay between the externally applied field direction and polarity of the current, leading subsequently to an Oersted field and heating of the permalloy at the interface with the Au wire. Placing the domain wall at various distances from the Au wire and studying different wall propagation directions, the range of Joule heating and Oersted field was determined; both effects could be separated. Approaches beyond conventional field- and current-induced wall displacement are briefly discussed.