• 제목/요약/키워드: Two-point correlation

검색결과 516건 처리시간 0.026초

Aerodynamic properties of a streamlined bridge-girder under the interference of trains

  • Li, Huan;He, Xuhui;Hu, Liang;Wei, Xiaojun
    • Wind and Structures
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    • 제35권3호
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    • pp.177-191
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    • 2022
  • Trains emerging on a streamlined bridge-girder may have salient interference effects on the aerodynamic properties of the bridge. The present paper aims at investigating these interferences by wind tunnel measurements, covering surface pressure distributions, near wake profiles, and flow visualizations. Experimental results show that the above interferences can be categorized into two primary effects, i.e., an additional angle of attack (AoA) and an enhancement in flow separation. The additional AoA effect is demonstrated by the upward-moved stagnation point of the oncoming flow, the up-shifted global symmetrical axis of flow around the bridge-girder, and the clockwise-deflected orientation of flow approaching the bridge-girder. Due to this additional AoA effect, the two critical AoAs, where flow around the bridge-girder transits from trailing-edge vortex shedding (TEVS) to impinging leading-edge vortices (ILEV) and from ILEV to leading-edge vortex shedding (LEVS) of the bridge-girder are increased by 4° with respect to the same bridge-girder without trains. On the other hand, the underlying flow physics of the enhancement in flow separation is the large-scale vortices shedding from trains instead of TEVS, ILEV, and LEVS governed the upper half bridge-girder without trains in different ranges of AoA. Because of this enhancement, the mean lift and moment force coefficients, all the three fluctuating force coefficients (drag, lift, and moment), and the aerodynamic span-wise correlation of the bridge-girder are more significant than those without trains.

프랜차이즈 기업의 조직과 직무에 대한 심리적 소유감이 성과 및 고객지향성에 미치는 영향 (The Effects of Psychological Ownership of Franchise Corporate on Performance and Customer Orientation)

  • 이정운
    • 한국프랜차이즈경영연구
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    • 제8권3호
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    • pp.7-16
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    • 2017
  • Purpose - Recently, as the franchise market has grown rapidly and competition has intensified, the creation of competitive advantage by companies has become important as a corporate survival strategy. Based on previous studies, this study proposed a theoretical framework for the structural relationship between psychological ownership (organization and job), job performance, and customer orientation. Research design, data, and methodology - This research examines the structural relationship between psychological ownership, job performance, and customer orientation in terms of employees. More specifically, in this model, psychological ownership consists of two sub-dimensions of organization and function. Research models and hypotheses have been developed for this purpose. A total of 409 respondents responded via surveys. 2 out of 409 respondents have been removed and a total of 407 were used for this study. The data were analyzed using frequency analysis, confirmatory factor analysis, correlation analysis, and structural equation modeling with SPSS 21.0 and Amos 21.0 statistical program. Result - The results of the study are as follows. First, psychological ownership (organization and job) has a statistically significant positive effect on job performance. Second, psychological ownership of the job has a statistically significant positive effect on customer orientation. On the other hand, psychological ownership did not have a significant effect on customer orientation. Conclusions - The implications of this study are following as: From the theoretical point of view, this study distinguishes the psychological ownership of employees of a franchise corporate into two dimensions, organization and job, rather than a single dimension. Based on this, we examined the effect of psychological proprieties on job performance and customer orientation. This study also provides several implications. In a fiercely competitive franchise market, it is very important to analyze your employees to gain a competitive advantage over other competitors. It is meaningful to study the employees who work in the franchise. In addition, psychological ownership is an important variable that enhances job performance and leads to customer orientation, so the company needs to pay attention. Therefore, it needs to develop an internal marketing strategy that promotes psychological ownership.

컴파운드 양궁의 팔로우 스루 동작과 사격 정확도의 상관관계 (Relationship of Follow-through Movements to Target Accuracy in Compound Archers)

  • Junkyung Song;Kitae Kim
    • 한국운동역학회지
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    • 제34권1호
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    • pp.34-44
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    • 2024
  • Objective: This study aimed to investigate how the movements occurring during the follow-through phase after releasing an arrow among elite compound archers, are associated with the arrow impact points on the target. Method: Nine elite archers performed consecutive compound archery shooting under conditions identical to actual competitions using their own bows and equipment. Motion capture system and force platform were utilized to record the changes in joint positions and center of pressure, respectively. Principal component analysis was employed to identify the patterns in which multidimensional joint positions and COP changes were organized with horizontal and vertical coordinates of arrow impact points. Subsequently, correlation analysis quantified the relationship between individual variables and the coordinates of arrow impacts on the target. Results: We found a common organizational pattern in which the two axes of the impact point coordinates were grouped into the first two principal components. The movements of the upper and lower limbs following release exhibited opposite patterns in the anterior-posterior axis, with significant correlations observed between the arrow impact points of the horizontal axis and the left shoulder, right elbow, left hip, and both knees. Additionally, the lateral movements induced by the reaction force upon arrow release showed significant associations with the vertical coordinates of the impact points. Particularly, the correlations between the movements of the left shoulder and elbow, as well as the bilateral hip and right knee, were consistently observed among all participants. Conclusion: These findings implied that the post-release movements could significantly influence the trajectory and impact points of the arrows in compound archery. We suggest that a consistent and controlled movement during the follow-through phase may be more beneficial for optimizing shooting accuracy and precision rather than minimizing movements.

상호교류분석으로 본 간호학생의 자아상태와 스트레스 대처방법 및 건강상태에 관한 연구 (Study on Ego states in the view of Transactional analysis, Coping style and Health states of Nursing Students)

  • 원정숙;김정화
    • 동서간호학연구지
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    • 제7권1호
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    • pp.68-81
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    • 2002
  • The purpose of this study is to analyze the type of ego states and stress coping style on female college students who are in the course of nursing study. This study is performed in the view of Transactional Analysis and designed to scrutinize descriptive correlations between the type of ego states and stress coping style. The subject is consists of 144 freshmen and sophomore, 138 junior and senior students group, who are students of K nursing college located in Seoul. The sampling investigation period is on Sept. 14, 2002 to Oct. 26, 2002. The measuring instrument used for Transactional Analysis ego state is 50 items Ego-gram research paper devised by Dusay(1997). For studying coping style, Folkman & Lazarus's measurement(1984) was adopted, which is translated and modified by Han, and Oh,(1990). Health states is adopted by standardized health inspecting instrumental table (Cornell Medical Index:CMI) which is designed for Korean people by Ko and Park(1980) Statistic average and standard deviation were generated by using SPSS PC+, t=test and Pearson correlation. The results were as follows: 1) In the type of ego states on both groups indicated the arithmetic apex NP(maximum value), then the point A was high and the data made a down slope to point AC. In the comparison to type of ego states between two groups, only at point CP, the data value of upper year students represented higher than that of lower year ones by c(t=2.28, p=.023). 2) Stress coping style of whole students were highly and affirmatively dedicated to research. Especially hopeful aspect(t=.67, p=.05), relaxation of tension(t=-2.16, p=.03) made significant difference each other in the view of arithmetic calculation. 3) In view of nursing students' physical health states, there is significant difference in past history(t=2.50, p=.013) and in case of mental health states, there are considerable discrepancies between lower group(73.52) and upper group(75.11)(p<.05). In view of all field, state of tension(t=2.13, p=.048) has difference. 4) While verifying coping style in terms of ego states level between lower and upper students group, In type CP, high level ego states group indicated significant difference on stress coping style area than low leveled group and made such sequences as the central point of problem, In type NP, sequences such as the central point of problem, In type A, the central point of problem, In type FC, hopeful aspect and In type AC, hopeful aspect and indifference were derived significantly different (p<.05). 5) While verifying health state differences in the level of lower and upper ego states, In type FC, low level group(150.29) marked higher point than upper group(145.19), there is remarkable discrepancy and so did whole health state(p=.014), In type AC both mental state(p=.000) and whole health state (p=.015) showed differences. 6) When analyzing correlations between whole students' ego states, copying style and health state, all type of ego state showed differences(p<.001). In correlations between ego state and health state, in type FC physical state had an apex and there are inverse correlations among the other types. Especially, type FC showed inverse correlations with great discrepancies(p<.05). In mental state, type NP(${\gamma}=.198$, p<.001) and type A(${\gamma}=.166$, p<.05) represented straight correlations with remarkable differences. Especially, In type AC showed inverse correlations(${\gamma}=.282$, p<.001). In case of correlations between copying style and health state, indifference(${\gamma}=-.157$) and relaxation of tension(${\gamma}=-.158$) presented great difference(p<.05). In mental state, central point of problem and search for social support showed straight correlations with great discrepancies(p<.05), hopeful aspect and indifference showed inverse correlations with considerable differences(p<.001).

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비도시 유역에서 수질오염물질 사이의 상관관계 분석 (Analysis of Relationships Among the Pollutant Concentrations in Non-urban Area)

  • 전지홍;함종화;윤춘경
    • 생태와환경
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    • 제34권3호통권95호
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    • pp.215-222
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    • 2001
  • 본 연구에서는 비도시 유역에서 수질오염물질간의 상관관계를 알아보기 위하여 화옹간척지구의 상류 유역두 지점에서 1999견 강우시와 비강우시의 수질측정자료를 이용하여 오염물질간의 상관관계를 분석하였다. 비강우시에는 오염물질간 뚜렷한 상관관계를 확인하기 어려웠으나, 강우시에는 SS-TP, SS-COD, TP-COD사이에 높은 상관관계를 나타내었으며 TN과 다른 오염물질사이에는 일정한 경향을 나타내지 않았다. 오염물질간의회귀분석결과는 SS-TP, SS-COD사이에는 반 대수함수의 경향을 나타내고 유역특성에 영향을 받았으며, TP-COD는 선형함수의 경향을 나타내고 유역특성에 영향을 적게 받았다. 본 연구에서 발표한 수질오염물질 사이의 회귀식들은 유역의 특성에 영향을 받겠으나 화옹지구는 물론, 자료가 부족한 다른 비도시 유역에도 기본계획 단계에서는 사용이 가능할 것으로 판단된다.

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간호대학생의 간호사이미지, 전문직 자아개념 및 조직몰입 (A Study on Nurse Image, Professional Self-concept and Organizational Commitment of Nursing Students)

  • 이종율
    • 한국산학기술학회논문지
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    • 제18권3호
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    • pp.284-295
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    • 2017
  • 본 연구는 간호대학생의 간호사이미지, 전문직 자아개념 및 조직몰입의 정도를 알아보고, 이들 변수들 간의 관계를 규명하기 위해 시도되었다. 연구방법은 J시의 간호대학생 238명을 대상으로 한 서술적 조사연구로, 자료수집은 2016년 9월 7일에서 9월 10일 사이에 실시되었다. 자료분석은 평균, 표준 편차, t-검정, ANOVA, Scheffe's test, Pearson 상관 계수, 단계적 다중 회귀 분석을 WIN SPSS 21.0 프로그램을 이용하여 분석하였다. 연구결과를 살펴보면 간호대학생들은 간호사이미지, 전문직 자아개념 및 조직몰입에 대해 5점 만점에 각각 4.01점, 3.40점 및 3.77점으로 평균값이 나타났다. 간호대학생의 간호사이미지는 전문직 자아개념, 조직몰입과 통계적으로 유의한 순 상관관계를 보였다. 또한 전문직 자아개념은 조직몰입과의 관계에서 통계적으로 유의한 상관관계를 보였다. 그리고 단계적 다중회귀분석 결과 본 연구의 측정변인인 간호사이미지와 전문직 자아개념은 간호대학생의 조직몰입에 대해 56.3%의 설명력을 보였다. 조직몰입에 영향을 미치는 상대적 영향력은 간호사이미지, 전문직 자아개념 순으로 나타났으며, 이 중에서 간호사이미지가 대상자의 조직몰입에 가장 큰 예측변인임이 확인되었다.

Evaluation of the quality stability on the soybean flour depending on storage conditions

  • Park, Sung-Kyu;Son, Na-Young;Kim, Mi-Jung;Chung, Ill-Min
    • 한국작물학회:학술대회논문집
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    • 한국작물학회 2017년도 9th Asian Crop Science Association conference
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    • pp.264-264
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    • 2017
  • Legumes are good sources of various nutrients. Among legumes, soybean and its flour are accessible foods to consumers. However, in case of soybean flour, there is a disadvantage of easily going rancid. Thus, this study aimed to investigate how the quality of soybean flour changes during storage according to the packaging materials and storage temperatures. The raw and roasted soybean flours were packed in two types of packaging, polyethylene (PE) and polypropylene (PP) film bags respectively, and stored at three different storage temperatures (4, 20, and $45^{\circ}C$) for 1 year. The acid value, conjugated diene value, peroxide value, p-anisidine value, thiobarbituric acid (TBA) value, lipoxygenase activity, and fatty acid content of raw and roasted soybean flours were measured at the point of starting storing, and after 1, 2, 4, 8, and 12 weeks of storage. The acid value of soybean flour was increased for 4 weeks and thereafter significantly decreased (p < 0.0001). The conjugated diene value was significantly increased after 4 weeks storage at $45^{\circ}C$ with PE and PP film bags (p < 0.0001). The peroxide value had no changes during 4 weeks storage at $45^{\circ}C$ with PE and PP film bags, and then those was dramatically increased after 8 weeks (p < 0.0001). The p-anisidine values in all of storage conditions were decreased after 4 weeks. Lipoxygenase activity was decreased at 12 weeks storage at $20^{\circ}C$ and $45^{\circ}C$ with PP film bags. Acid value had positive correlations with p-anisidine value (r = 0.30 and p < 0.0001) and lipoxygenase activity (r = 0.36 and p < 0.0001), and had negative correlations with conjugated diene value (r = -0.45 and p < 0.0001) and peroxide value (r = -0.25 and p < 0.001). Conjugated diene value had a high positive correlation with peroxide value (r = 0.76 and p < 0.0001), but that had a negative correlation with lipoxygenase activity (r = -0.51 and p < 0.0001). Peroxide value had negative correlations with p-anisidine value (r = -0.20 and p < 0.01) and TBA value (r = -0.15 and p < 0.05). The degree of reduction in fatty acid content of raw soybean flour was higher than the roasted soybean flour during the storage. Total fatty acid content had positive correlations with acid value (r = 0.45 and p < 0.0001) and p-anisidine value (r = 0.58 and p < 0.0001), but had a weak negative correlation with conjugated diene value (r = -0.19 and p < 0.01). This study showed how the rancidity of the raw and roasted soybean flours progressed during storage. Thus, our findings can be used as base data to do a further study of finding and developing more stable storage conditions of the soybean flour.

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초등학교 6학년 학생들의 교과서 비례 문제 해결과 비례 추론에 관한 연구 (A Study on the Solving Proportion Problems of Mathematics Textbooks and Proportional Reasoning in 6th Graders)

  • 권미숙;김남균
    • 한국초등수학교육학회지
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    • 제13권2호
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    • pp.211-229
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    • 2009
  • 본 연구에서는 7차 교육과정에서 6학년 때 도입되는 교과서의 비례 문제들이 학생들의 비례 추론 능력과 어떠한 관련이 있는지를 알아보기 위해 교과서의 비례 문제 해결 실태를 파악하고, 수준별 비례 추론 능력을 하위영역으로 나누어 교과서 비례 문제 해결 능력에 따라 하위영역별로 비례추론 능력이 어떠한지 분석하였다. 연구결과 교과서의 비례 문제에서 정답률이 높은 문제들은 설명에서 비례식을 이용해서 풀 수 있도록 제시되어 있었으며, 비례식을 세웠을 때 두 비 사이의 관계가 정수비로 계산이 간단하였다. 비례 추론 하위 영역 중 비감각 영역의 문제 해결을 잘하였고, 양과 변화 영역에 대한 부분의 능력은 가장 뒤떨어졌다. 교과서의 비례 문제 해결 능력과 비례 추론의 관계에 대해서는 교과서의 비례 문제 해결이 우수한 학생일수록 비례 추론 능력이 우수였다. 교과서 비례문제의 해결 결과가 비례추론 능력을 예언할 수 있다고 볼 수 있다. 교과서 비례문제 수준에 따라서 비례 추론 문제 해결의 수준차를 알아본 결과, 차이가 많이 나지 않는 문제는 꼭 비와 비율 관련 단원이 아니라도 수학 교과서에서 다양하게 접할 수 있는 문제였고, 수준별 차이가 많이 나는 문제는 그동안 교과서에서 쉽게 접해보지 못한 유형으로 단순히 비례식을 이용해서는 해결할 수 없는 문제들이었다. 따라서, 비례추론 하위 영역별로 모든 영역에 대하여 능력을 향상시키기 위해서는 교과서에 비례식 외에 다양한 상황과 내용의 비례문제를 포함하여 지도하여야 할 것이다.

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전염병관리 전문요원 교육과정 개발을 위한 교육요구 사정 (Educational Need Assessment for Developing Curriculum for Field Epidemiology Specialist Training Program on Infectious Disease)

  • 박노례;정인숙;김영택;정은경;전진호;송미숙;이인숙;조성일;천병철
    • 보건행정학회지
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    • 제12권2호
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    • pp.76-91
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    • 2002
  • 본 연구는 국가의 위기관리 차원에서 실시되는 보건소 전염병 관리 능력 함양을 위한 교육과정 개발에 앞서 교육 요구도를 파악하기 위하여 시도된 것이다. 전국 242개 보건소에서 실제 전염병 관리 업무나 관련 업무를 담당하는 직원 484명을 대상으로 일반적 특성(3문항)외에, 전염병 감시체계의 효율적 운영(12문항), 역학조사(11문항), 환자관리 및 방역조치(9문항), 예방접종률 제고(14문항), 관리(15문항), 교육 및 홍보(8문항) 등 7개 영역으로 구성한 설문지를 배부하였는데 300명이 응답하여 62.0%의 응답률을 보였다. 4점 만점 척도에서 전채적으로 2.10점에서 2.31점으로 교육 요구도가 있음을 알 수 있었고, 가장 교육요구도가 높게 나타난 영역은 관리영역(2.31점)이며, 가장 낮은 영역은 전염병 감시체계의 효율적 운영(2.10점)이었다. 직종간 영역별 교육요구도에 가장 큰 차이를 보인 것으로는 예방접종률 제고, 환자 관리 및 역학조사, 그리고 환자관리 및 방역조치이며, 전염병관리 업무의 근무연한과 하부영역별 교육 요구도는 역상관성이 있는 것으로 나타났다. 이러한 연구결과를 고려할 때 이번 교육과정에서는 지식 제공은 최소화하고 기존 지식을 활용하여 실제 문제에 직면하였을 때 어떻게 효과적으로 문제를 해결해 나갈 것인가에 초점을 두며, 전염병 감시, 역학조사, 예방접종 사업 등을 통해 얻어지는 자료를 처리하거나 분석하여 효과적으로 활용하고 평가하는 기술을 습득하는데 역점을 두어야 할 것이다.

간호개념에 대한 기초조사 (The Empirical Exploration of the Conception on Nursing)

  • 백혜자
    • 대한간호학회지
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    • 제11권1호
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    • pp.65-87
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    • 1981
  • The study is aimed at exploring concept held by clinical nurses of nursing. The data were collected from 225 nurses conviniently selected from the population of nurses working in Kang Won province. Findings include. 1) Nurse's Qualification. The respondents view that specialized knowledge is more important qualification of the nurse. Than warm personality. Specifically, 92.9% of the respondents indicated specialized knowledge as the most important qualification while only 43.1% indicated warm personality. 2) On Nursing Profession. The respondents view that nursing profession as health service oriented rather than independent profession specifically. This suggests that nursing profession is not consistentic present health care delivery system nor support nurses working independently. 3) On Clients of Nursing Care The respondents include patients, family and the community residents in the category of nursing care. Specifically, 92.0% of the respondents view that patient is the client, while only 67.1% of nursing student and 74.7% of herself. This indicates the lack of the nurse's recognition toward their clients. 4) On the Priority of Nursing care. Most of the respondents view the clients physical psychological respects as important component of nursing care but not the spiritual ones. Specially, 96.0% of the respondents indicated the physical respects, 93% psychological ones, while 64.1% indicated the spiritual ones. This means the lack of comprehensive conception on nursing aimension. 5) On Nursing Care. 91.6% of the respondents indicated that nursing care is the activity decreasing pain or helping to recover illness, while only 66.2% indicated earring out the physicians medical orders. 6) On Purpose of Nursing Care. 89.8% of the respondents indicated preventing illness and than 76.6% of them decreasing 1;ai of clients. On the other hand, maintaining health has the lowest selection at the degree of 13.8%. This means the lack of nurses' recognition for maintaining health as the most important point. 7) On Knowledge Needed in Nursing Care. Most of the respondents view that the knowledge faced with the spot of nursing care is needed. Specially, 81.3% of the respondents indicated simple curing method and 75.1%, 73.3%, 71.6% each indicated child nursing, maternal nursing and controlling for the communicable disease. On the other hand, knowledge w hick has been neglected in the specialized courses of nursing education, that is, thinking line among com-w unity members, overcoming style against between stress and personal relation in each home, and administration, management have a low selection at the depree of 48.9%,41.875 and 41.3%. 8) On Nursing Idea. The highest degree of selection is that they know themselves rightly, (The mean score measuring distribution was 4.205/5) In the lowest degree,3.016/5 is that devotion is the essential element of nursing, 2.860/5 the religious problems that human beings can not settle, such as a fatal ones, 2,810/5 the nursing profession is worth trying in one's life. This means that the peculiarly essential ideas on the professional sense of value. 9) On Nursing Services. The mean score measuring distribution for the nursing services showed that the inserting of machine air way is 2.132/5, the technique and knowledge for surviving heart-lung resuscitating is 2.892/s, and the preventing air pollution 3.021/5. Specially, 41.1% of the respondents indicated the lack of the replied ratio. 10) On Nurses' Qualifications. The respondents were selected five items as the most important qualifications. Specially, 17.4% of the respondents indicated specialized knowledge, 15.3% the nurses' health, 10.6% satisfaction for nursing profession, 9.8% the experience need, 9.2% comprehension and cooperation, while warm personality as nursing qualifications have a tendency of being lighted. 11) On the Priority of Nursing Care The respondents were selected three items as the most important component. Most of the respondents view the client's physical, spiritual: economic points as important components of nursing care. They showed each 36.8%, 27.6%, 13.8% while educational ones showed 1.8%. 12) On Purpose of Nursing Care. The respondents were selected four items as the most important purpose. Specially,29.3% of the respondents indicated curing illness for clients, 21.3% preventing illness for client 17.4% decreasing pain, 15.3% surviving. 13) On the Analysis of Important Nursing Care Ranging from 5 point to 25 point, the nurses' qualification are concentrated at the degree of 95.1%. Ranging from 3 point to 25, the priorities of nursing care are concentrated at the degree of 96.4%. Ranging from 4 point to 16, the purpose of nursing care is concentrated at the degree of 84.0%. 14) The Analysis, of General Characteristics and Facts of Nursing Concept. The correlation between the educational high level and nursing care showed significance. (P < 0.0262). The correction between the educational low level and purpose of nursing care showed significance. (P < 0.002) The correlation between nurses' working yeras and the degree of importance for the purpose of nursing care showed significance (P < 0.0155) Specially, the most affirmative answers were showed from two years to four ones. 15) On Nunes' qualification and its Degree of Importance The correlation between nurses' qualification and its degree of importance showed significance. (r = 0.2172, p< 0.001) 0.005) B. General characteristics of the subjects The mean age of the subject was 39 ; with 38.6% with in the age range of 20-29 ; 52.6% were male; 57.9% were Schizophrenia; 35.1% were graduated from high school or high school dropouts; 56.l% were not have any religion; 52.6% were unmarried; 47.4% were first admission; 91.2% were involuntary admission patients. C. Measurement of anxiety variables. 1. Measurement tools of affective anxiety in this study demonstrated high reliability (.854). 2. Measurement tools of somatic anxiety in this study demonstrated high reliability (.920). D. Relationship between the anxiety variables and the general characteristics. 1. Relationship between affective anxiety and general characteristics. 1) The level of female patients were higher than that of the male patient (t = 5.41, p < 0.05). 2) Frequencies of admission were related to affective anxiety, so in the first admission the anxiety level was the highest. (F = 5.50, p < 0.005). 2, Relationship between somatic anxiety and general characteristics. 1) The age range of 30-39 was found to have the highest level of the somatic anxiety. (F = 3.95, p < 0.005). 2) Frequencies of admission were related to the somatic anxiety, so .in first admission the anxiety level was the highest. (F = 9.12, p < 0.005) 0. Analysis of significant anxiety symptoms for nursing intervention. 1. Seven items such as dizziness, mental integration, sweating, restlessness, anxiousness, urinary frequency and insomnia, init. accounted for 96% of the variation within the first 24 hours after admission. 2. Seven items such as fear, paresthesias, restlessness, sweating insomnia, init., tremors and body aches and pains accounted for 84% of the variation on the 10th day after admission.

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