• Title/Summary/Keyword: physical theory

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A Study on the Priority Analysis of Information Systems Audit Evaluation Factors using Fuzzy-AHP Method (Fuzzy-AHP 기법을 이용한 정보시스템 감리서비스 평가항목에 대한 우선순위 분석에 관한 연구)

  • Kyung, Tae-Won;Kim, Sang-Kuk
    • Information Systems Review
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    • v.10 no.3
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    • pp.155-183
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    • 2008
  • Current trend of audit is to check the physical aspects of developed information system, such as checking the budget constraints, time constraints or functional fluency etc. However, ultimate goal of information system is to help the organization to achieve the competency over their competitors. Also, there are three different interest groups in system auditing, like audit requesting group, audited group and audit group, who may have different points of interests in auditing. Current auditing process, however, ignores this point, and so does not check the differences between three groups. This study tries to develop new auditing method to cure these two problems. Contributions of this study may be summarized as follows. First, Introduce the new indexes that can check the possibility that the information system may contribute the competency of organization. Also check the feasibility of indexes through Fuzzy AHP. Second, Divide the audit related person into three groups, and their different needs toward the information system was analyzed. Third, Analyze and compare the main interests of three groups, and weights of each groups to each indexes were calculated. Fourth, Fuzzy theory was applied to quantify the qualitative answers, which may minimize the ambiguity of questionnaire replies.

Queue Length Based Real-Time Traffic Signal Control Methodology Using sectional Travel Time Information (구간통행시간 정보 기반의 대기행렬길이를 이용한 실시간 신호제어 모형 개발)

  • Lee, Minhyoung;Kim, Youngchan;Jeong, Youngje
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.13 no.1
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    • pp.1-14
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    • 2014
  • The expansion of the physical road in response to changes in social conditions and policy of the country has reached the limit. In order to alleviate congestion on the existing road to reconsider the effectiveness of this method should be asking. Currently, how to collect traffic information for management of the intersection is limited to point detection systems. Intelligent Transport Systems (ITS) was the traffic information collection system of point detection method such as through video and loop detector in the past. However, intelligent transportation systems of the next generation(C-ITS) has evolved rapidly in real time interval detection system of collecting various systems between the pedestrian, road, and car. Therefore, this study is designed to evaluate the development of an algorithm for queue length based real-time traffic signal control methodology. Four coordinates estimate on time-space diagram using the travel time each individual vehicle collected via the interval detector. Using the coordinate value estimated during the cycle for estimating the velocity of the shock wave the queue is created. Using the queue length is estimated, and determine the signal timing the total queue length is minimized at intersection. Therefore, in this study, it was confirmed that the calculation of the signal timing of the intersection queue is minimized.

A Study on Developing and Validating the Modern Physics Conceptual Diagnostic Survey for Pre-Service Physics Teachers based on the 2015 Revised National Science Curriculum (2015 개정 과학과 교육과정에 기초한 예비 물리교사를 위한 현대물리 개념 진단지 개발 및 타당화 연구)

  • Kim, Wanseon;Kim, Sung-Won
    • Journal of The Korean Association For Science Education
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    • v.40 no.3
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    • pp.253-269
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    • 2020
  • This study aims to develop items to diagnose pre-service physics teachers' understanding of the conceptual knowledge of modern physics, based on the achievement criteria presented in the 2015 revised national science curriculum, and to identify the validity and reliability of the newly developed items. Data were collected from 467 pre-service physics teachers in the Physical Education Department or Science Education Department (Physics Education Major) of 15 universities across the nation. In this study the content validity, substantive validity, the internal structure validity, generalization validity, and the external validity proposed by Messick (1995) were examined by various statistical tests. The results of the MNSQ analysis showed that there was no nonconformity in the 23 items. The internal structure validity was confirmed by the standardized residual variance analysis, which shows that the 22 items was unidimensional. The generalization validity was confirmed by differential item functioning (DIF) analysis about groups lectured or not modern physics/quantum mechanics. In addition, item analysis and test analysis based on classical test theory were performed. The mean item difficulty is 0.66, mean item discrimination is 0.47 and mean point biserial coefficient obtained was 0.41. These results for item parameters satisfied the criteria respectively. The reliability of the internal consistency of the KR-20 is 0.77 and the Ferguson's delta obtained was δ = 0.972. By Rasch model analysis, the item difficulty (item measures) was discussed.

A Survey on Perception and Attitude of Patients and their Families to the Korean Shamanism (환자와 보호자의 샤머니즘적 사고와 태도에 대한 조사연구)

  • Shim Hyung-Wha;Park Jum-Hee
    • Journal of Korean Academy of Fundamentals of Nursing
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    • v.6 no.2
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    • pp.288-309
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    • 1999
  • This survey was done to construct a nursing theory according to Korean culture and to identify the Korean traditional view. From ancient time until now, shamanism has played an important role as determinant of Korean culture and of the personality formation of Korean people. The subjects are 321 patients and member of their families who were over 18 years old, and who are living in five large cities and two rural communities in Korea. Data collection was done from March, 8th to April, 29th in 1999. SPSS The tool developed by the investigator through literature review was used to measure the perception and the attitude of patients and their families to Korean shamanism. Collected data were analyzed by frequency, percent and $x^2$ test with SPSS program. The results are summarized as follows ; 1) While 35% of respondents answed that the destiny or fate(八字) was only relied on the abilities and endeavor of individual, 65% of respondents were fatalists(運命論者) or eclectic(折衷主義者) are compromised between the fate and endeavor. 2) While half of the respondents belief in divination(占) to some degree, the rest of them reported hardly any belief in divination. 3) There were almost twice as many respondents who directly consulted fortune-tellers were as respondents who did not consult fortunetellers. 4) The reasons for consulting fortunetellers were job problems, home problems, health problems by in that order. 5) The respondents almost always interpreted the cause of physical disease and mental disease as being psycho-sociological, but 1% of them explained mental disease as a shamanistic manitestation. 6) In case of disease, the reasons for consulting a fortuneteller was a) no hope of recovery from the sickness in any other way, b) the chronic disease in that order. 7) Of the respondents, 65% answered that diseases could not be cured by a 'Gut' (the performance done by the shaman), but 27% of respondents thought that disease could be cured by a 'Gut' in the case of mental disease. 8) Sixty six percent of the respondents answered that they have experienced praying for their wishes with clean water(井華水). 9) While 54% of the respondents answered that they have seen or heard the 'Beung Gut'(the performance to pray for recovery of sickness done by the shaman), 46% responded that they have never seen or heard it. 10) To the question 'do you intend to have a 'Beung Gut', 51.7% of respondents answer 'no' strongly, but 48% of them say 'yes' or took a compromising attitude. 11) Generally the respondents differed in perception and attitude to shamanism. In short, females more than males, old aged more than younger aged, lower educated more than higher educated, believers in Buddhism more than believers in any other religion, and blue color more than white color have more positive attitudes to shamanism. Also men living in rural communities have more positive attitude to shamanism than men living in the large cities. Consequently, Shamanism can be understood as an anxiety relieving cultural system even though Shamanism itself looks like a cultural complex.

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Concept Development of Resilience (회복력 (Resilience) 개념 개발)

  • 김혜성
    • Journal of Korean Academy of Nursing
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    • v.28 no.2
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    • pp.403-413
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    • 1998
  • The Resilience is described as the personal capacity which brings psychosocial comeback. The role of nursing is to do its best to rehabilitate patients and to explore the individual in order to promote patients psychosocial change. However, as the current nursing is heavily physical nursing oriented, the identity of the nursing would be lost. Therefore this researcher reviewed if the concept of resilience can be applied to the nursing after examing the concept of resilience by Documents and Fieldwork. The methodology of this research is Hybrid Model developed by Schwartz-Barcott and Kim for the concept development and analysis. The process and procedure consist of The Theoretical Phase, The Fieldwork Phase and The Final Analytical Phase in accodance with the Hybrid Model. The followings the summary of the Research. 1. The Concept of Resilience Finally Analyzed by Documents and Fieldwork (1) The Redefinition of Resilience The resilience is the latent psychosocial capacity which minimize the negative emotion and promote the adaptation under adversity. Resilience appears as cognitive, emotional and behavioral response in the course of changing from negative response to positive response through the interaction of the individual and the enviroments in a given time. Resilience changes and decreases according to time and situation and it can be nurtured. Resilience is the higher concept including hardiness, sense of coherence and self-strength which maintain the health under stress. (2) The Attribute of Resilience The attribute of resilience was devided into psychological and social dimension. In psychological attributes, there are admittion of reality of situation, denial of negative emotion, desire to live, responsibility, confidence, courage, hope, pursuit of positive meaning, identification and pursuit of goal, self-esteem, reception, spontaneity, planning, positiveness, will power, flexibility and creativity. In social attributes, there are a sense of belonging, perception of social support and active social relations. (3) The Process of Resilience There are 4 resilience phases which were the process minimizing the possibility of the negative chain reactions under adversity, the process minimizing the negative emotion under adversity, the process gaining the desire to live and the process exposing the active social relations. 2. The Application Possibility of Resilience Concept to Nursing The resilience concept is the psychosocial capacity with which an individual manages adversity. As many nursing scientists have developed nursing theory based on this capacity and the identification of nursing has been established in this field, resilience is not the new conception in nursing. However, since resilience appears in the attributes related with the resilience process concretely, it would help a lot when nurses execute psychosocial nursing.

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Multi-scale Analysis of Thin film Considering Surface Effects (표면효과를 고려한 박막구조의 멀티스케일 해석)

  • Cho, Maeng-Hyo;Choi, Jin-Bok;Jung, Kwang-Sub
    • Journal of the Computational Structural Engineering Institute of Korea
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    • v.20 no.3
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    • pp.287-292
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    • 2007
  • In general, the response of bulk material is independent of its size when it comes to considering classical elasticity theory. Because the surface to bulk ratio of the large solids is very small, the influence of surface can be negligible. But the surface effect plays important role as the surface to bulk ratio becomes larger, that is, the contribution of the surface effect must be considered in nano-size elements such as thin film or beam structure. Molecular dynamics computation has been a conventional way to analyze these ultra-thin structures but this method is limited to simulate on the order of $10^6{\sim}10^9$ atoms for a few nanoseconds, and besides, very time consuming. Analysis of structures in submicro to micro range(thin-film, wire etc.) is difficult with classical molecular dynamics due to the restriction of computing resources and time. Therefore, in this paper, the continuum-based method is considered to simulate the overall physical and mechanical properties of the structures in nano-scale, especially, for the thin-film.

Nurturing Experience of Mothers of Children with Disabilities Admitted to a Group-Home (장애아동을 그룹홈에 입소시킨 어머니의 양육경험)

  • Hwang, Yeon-Hwa;Im, Jong-Ho
    • The Journal of the Korea Contents Association
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    • v.16 no.8
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    • pp.257-267
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    • 2016
  • The research subject is 8 mothers who put their physical/mentally impaired children in a group home, as the research method, this study conducted an in-depth interview survey. The participants of this study collected data from the in-depth interview on 8 mothers who put their disabled children to the group home. In the result of open coding, total 34 concepts, 28 subcategories and 13 categories were derived. The core category in the selective coding was 'establishing restorative relationship through entering a group home after encountering the limit of nurture.' Practical Strategies include the following; first, it's necessary to provide psychology counselling consequent on a mother's nurturing phase, and this study proposes a program for a father having a child with disability; in addition, there is the necessity of having to arrange the differentiated facility for physically/mentally impaired people, which meets the needs of the relevant people. At a level of policy, this study suggested the necessity of having to take into account the minimization of poverty problem facing a family having a disable child through the caring card, necessity of the use of good-natured card, and medical-social-welfare-based intervention, expansion of facility-touring class installation, and use of adult guardianship system, and differential payment of disabled child nurturing allowance consequent on income quantile, etc.

A Lower Bound Estimation on the number of LUT′s in Time-Multiplexed FPGA Synthesis (시분할 FPGA 합성에서 LUT 개수에 대한 하한 추정 기법)

  • Eom, Seong-Yong
    • Journal of KIISE:Computer Systems and Theory
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    • v.29 no.7
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    • pp.422-430
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    • 2002
  • For a time-multiplexed FPGA, a circuit is partitioned into several subcircuits, so that they temporally share the same physical FPGA device by hardware reconfiguration. In these architectures, all the hardware reconfiguration information called contexts are generated and downloaded into the chip, and then the pre-scheduled context switches occur properly and timely. Since the maximum number of the LUT's required in the same time determines the size of the chip used in the synthesis, it needs to be minimized, if possible. Many previous work use their own approaches, which are very similar to either scheduling method in high level synthesis or multi-way circuit partitioning method, to solve the problem. In this paper, we propose a method which estimates the lower bound on the number of LUT's without performing any actual synthesis. The estimated lower bounds help to evaluate the results of the previous work. If the estimated lower bound on the number of LUT's exactly matches the number of LUT's of the result from the previous work, the result must be optimal. In contrast, if they do not match, the following two cases are expected : the more exact lower bound may exist, or we might find the new synthesis result better than the result from the previous work. Experimental results show that our lower bound estimation method is very accurate. In almost al] cases experimented, the estimated lower bounds on the number of LUT's exactly match those of the previous synthesis results respectively, implying that the best results from the previous work are optimal as well as our method predicted the exact lower bound for those examples.

A study on the determination of the number of mobility cluster (적정 이동군집수 결정에 관한 연구)

  • ;Ham, Sung Hun
    • Journal of the Korean Geographical Society
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    • v.30 no.2
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    • pp.120-131
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    • 1995
  • To analyze mobility patterns, this study used three Constraint (Capability Constraint, Coupling Constraint, Authority Constraint) models which were proposed in Dr. Hagerstrand's Time-space theory. This paper shows that three constraint models have some effects upon mobility by age. In this study, Capability Constraint means a certain special constraint that is what we can't do during proceeding basic natural urges like sleep, fare, etc. Coupling constraint is a physical one. Each person limits the action range for staying on a special place in special time. For instance, students have to stay in school so that they have mobility constraints. Authority Constraint is a social one. When we use urban facilities or traffic, we may be controlled by mobility sphere by an agreement or a social position. It is social agreement that the opening hour of a store, the time table of mass-transportation and a social positional control that the personal income, the standard of education. In this study it has been in a process of determination of the cluster number that degree of influences a social constraint to mobility. Considering the mobility constraint of characteristics of space divides urban and rural, people in urban area have higher mobility rate than in rural area. Resuets of determination of the cluster, show similar mobility pattern. People in urban area are connected verity of mobility which related to urban space structures with determination of cluste-number. That is to say, mobility patterns can be changed by space charactcristics. Constraints by sex and age are also social constraints and they are influenced by mobility patterns. For instance, females at the age of twenties have similar mobility pattern to the same age male but they have sudden changes after thirty's age. Male entertains a similar pattern without restriction of age. That is to say, management by sex as a social constraint affects mobility. To establish more realistic traffie policy, mobility formation should be reflected to the space in a view of social-behavioral science. To embody this, some problems should be investigated as follows. 1. As a problem of methodology, if sufficient samples ensured, we could subdivide clusters and could open up a new method of analyzing the mobility clusters by using the neuro-network. 2. Extracting actions connected with mobility and finding life cycle which is classified by daily cluste-characteristics, suitable counterproposal could be presented to the traific policy.

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Conflict Experience as an Occupational Therapist: Parse's Theory of Human Becoming (작업치료사로서의 갈등 경험에 관한 연구: Parse의 인간되어감 연구방법 적용)

  • Han, Sang-Woo;Ham, Bo-Hyun;Hong, Duk-Ki;Choi, Sung-Yul;Jeon, Byoung-Jin
    • The Journal of Korean society of community based occupational therapy
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    • v.4 no.1
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    • pp.47-58
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    • 2014
  • Objective : Commonly experienced as an occupational therapist to reveal the meaning of conflict, development by providing information on the quality of official development plan for therapists were willing to contribute. Method : In this study using Parse's human becoming method to collect and analyze data. Participants to understand purpose of the study's researchers and that can be spoken honestly their experience through dialogue were selected eight people as a clinical occupational therapist. Conversation period January-February 2012 was, at the time of about 30-40 minutes, Every conversation is more than three times for each participant were conducted. Result : Experience of occupational therapists, occupational therapy as a conflict of identity confusion and lack of awareness, feeling that comes from a poor working environment and social life, mental conflict, payroll issues to worry about, but concerns about the treatment of the future with hope and effort in the process was an experience. However, external, internal conflicts despite the uneasy reality academic experience for self-development and growth, and the development towards a positive future was out over it. Conclusion : Away from the internal and external conflicts therapists, occupational therapy and establish the identity of satisfaction and quality of care for the treatment to improve their physical and social environment, continuous improvement is necessary.

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