• 제목/요약/키워드: Data comparison

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Changes of Somatosensory Evoked Potential and Functional Recovery in Patients of Cerebrovascular disease (뇌혈관 질환자의 기능 회복과 체성감각 유발전위의 변화)

  • Kim, Yoon-Hwan;Kim, Chan-Kyu;Park, Jong-Hang;Lee, Seung-Yub;Choi, Won-Jye
    • Journal of Korean Physical Therapy Science
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    • v.15 no.1
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    • pp.11-20
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    • 2008
  • This study was designed to test the effects of comprehensive rehabilitation management on functional recovery after attack of cerebrovascular disease. 16 cerebrovascular disease patients applied comprehensive rehabilitation management of physical therapy at department of physical Therapy, C medical center in Gwang-ju. The collection of the data had been executed for 4months(April 15, 2007${\sim}$July 15, 2007). For evaluating, Functional Independence measure(FIM) and Somatosensory Evoked Potential(SSEP) were used to assess functional recovery. The results of this study were as follows: 1. In the comparison of latency of median nerve SSEP before and after treatment, the lat. N20 and P25 increased, the ampl. P25/N20 was decreased. In the comparison difference data of median nerve SSEP, however there was no significant difference in the group(p>0.05). 2. In the comparison of latency of Post Tibial nerve SSEP before and after treatment, the lat. P40, P50, P60 increased, the ampl. P40 was decreased. In the comparison difference data of post tibial nerve SSEP, however there was no significant difference in the group(p>0.05). 3. In the comparison of FIM scores of Self-care, Sphincter Control, Mobility: Transfer, Locomotion before and after treatment, the scores of FIM was significantly increased. In the comparison of difference of the motor part of FIM, however there was significant difference(p<0.05). 4. In the comparison of FIM scores of Communication, Social Cognition before and after treatment, the scores of FIM was significantly increased. In the comparison of difference of the motor part of FIM, however there was no significant difference in the group(p>0.05). Based on these results, it is concluded that the comprehensive rehabilitation management for cerebrovascular disease case was not significant difference in the SSEP, was significant difference in the motor part of FIM. Further study should be done to analyze the effect of intervention duration of treatment, optimal time to apply the treatment in more long period.

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An Empirical Evaluation of Test Data Generation Techniques

  • Han, Seung-Hee;Kwon, Yong-Rae
    • Journal of Computing Science and Engineering
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    • v.2 no.3
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    • pp.274-300
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    • 2008
  • Software testing cost can be reduced if the process of testing is automated. However, the test data generation task is still performed mostly by hand although numerous theoretical works have been proposed to automate the process of generating test data and even commercial test data generators appeared on the market. Despite prolific research reports, few attempts have been made to evaluate and characterize those techniques. Therefore, a lot of works have been proposed to automate the process of generating test data. However, there is no overall evaluation and comparison of these techniques. Evaluation and comparison of existing techniques are useful for choosing appropriate approaches for particular applications, and also provide insights into the strengths and weaknesses of current methods. This paper conducts experiments on four representative test data generation techniques and discusses the experimental results. The results of the experiments show that the genetic algorithm (GA)-based test data generation performs the best. However, there are still some weaknesses in the GA-based method. Therefore, we modify the standard GA-based method to cope with these weaknesses. The experiments are carried out to compare the standard GA-based method and two modified versions of the GA-based method.

Comparison of National Database of Health Inequality between Korea and the UK: Focusing on Substance Misuse Related Mental Health and Respiratory Diseases (한국과 영국의 건강불평등 국가 데이터베이스 비교: 중독 물질 오남용 관련 정신건강 및 호흡기 질환을 중심으로)

  • Lee, Iyn-Hyang
    • Korean Journal of Clinical Pharmacy
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    • v.31 no.3
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    • pp.216-230
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    • 2021
  • Objective: Taking action on health inequalities starts with the production of information laying out the problems of inequalities, but Korean society has no national database to view related data at a glance. This study aimed to compare Korean national database with the Public Health Profile (PHP), a health inequality database of the UK. Methods: Data were collected from the websites of government and relevant organizations in the both countries between March and August 2020, which was updated in August 2021. Two themes including Co-occurring substance misuse and mental health issues in mental health and INteractive Health Atlas of Lung conditions in England were selected for comparison in terms of data accessibility, data usability and data visualization. Results: The British PHP is being served on a web-based platform, Fingertips. The data collected at the regional level were presented on 31 health inequality themes. The data are displayed at a level that can be compared between comparable communities, and visualized into various tables and figures. Comparable Korean data were scattered in several themes and websites, and mostly provided as a 17 administrative region base, which was too vast to make a meaningful comparisons. Conclusion: The findings proposed several considerations which could be useful for establishing a database of health inequality in the Korean society.

Analysis of Measurement Error for PM-2.5 Mass Concentration by Inter-Comparison Study (비교 실험을 통한 PM-2.5 질량농도의 측정오차 분석)

  • Jung, Chang-Hoon;Park, Jin-Hee;Hwang, S.M.
    • Journal of Environmental Impact Assessment
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    • v.19 no.4
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    • pp.431-441
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    • 2010
  • In this study, inter-comparison for PM-2.5 was undertaken. The PM-2.5 mass concentrations using the gravimetric and beta-attenuation methods were compared during the winter in 2007. Two different types of conventional filter-based measurements (Cyclone type and Impactor type) were also collocated and the measurement data was compared with each other. As a result, continuous PM-2.5 data using beta attenuation method show a comparable mass concentration with gravimetric measurement when the inlet of beta-gauge sampler is heated. The results also showed that the cyclone type shows a little high PM-2.5 concentration than Impactor type. In all the sampling cases, the correlations between measurement methods are high. Subsequently, this study suggests that highly correlated relationship between PM-2.5 measurement instruments can be obtained through the inter-comparison results based on filterb-ased gravimetric method and more intensive measurement and theoretical studies are needed in order to clarify the measurement errors for different sampler types.

The Relationship between Self-control Behavior, Social Comparison Attitude, Self-efficacy and Health Promotion Activities of College Students (대학생의 통제감, 사회비교추구성향 및 자기효능감이 건강행위에 미치는 영향)

  • Song, So-Hyeon;Jang, Youn-Kyoung;Kim, Joo-Hyung
    • Journal of Korean Public Health Nursing
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    • v.23 no.1
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    • pp.27-39
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    • 2009
  • Purpose: This study was conducted to evaluate the relationship between self-control behavior, social comparison attitude, self-efficacy and health promotion activities of college students who had health related majors (nursing, dental hygiene, health administration). Methods: The subjects consisted of 413 college students. Data were collected by self reported questionnaires that were designed to evaluate self-control behavior, social attitudes, self-efficacy and health promotion lifestyle (HPLP). Data were analyzed using the SPSS/PC win 14.0 program. Results: Upward & parallel comparison, self-efficacy and parents income were positively correlated with health promotion activities by college students. The most significant predictors of health promotion activities for college students were self-efficacy and self-control behavior. Conclusion: Health promotion activities for college students are influenced by self-efficacy, self-control behavior, and upward comparison. In conclusion, to increase the health promotion activities of college students, methods designed to increase self-efficacy should be prepared while considering the self-control behavior and comparative propensity towards others.

Inter-comparison of Bell Prover using Sonic Nozzles (소닉노즐을 이용한 벨 푸루버의 국제비교)

  • Choi, Hae Man;Park, Kyung-Am
    • The KSFM Journal of Fluid Machinery
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    • v.7 no.1 s.22
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    • pp.24-29
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    • 2004
  • The inter-comparison of standards is required to be recognized the calibration results. The sonic nozzle package is developed to do inter-comparison of the bell preyer used to calibrate many gas flow meters for industries. Four national metrology institutes (KRISS, CMS, CENAM, NEL) were participated in this inter-comparison. The deviation of calibration data from the average value was small at the low flow rate and large at the high flow rate, respectively At the high flow rate, the deviation was larger than the expected value from uncertainties asserted by NMIs. This means there are some problems in the uncertainty evaluation and experiment procedures in some of the participated NMIs.

A Study on Cultural Learning Through Cultural Comparison Activities: Focusing on Learner Perception

  • HyeJeong Kim
    • International Journal of Advanced Culture Technology
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    • v.12 no.3
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    • pp.80-87
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    • 2024
  • The aims of this study were to introduce cultural teaching procedures and propose cultural comparison activities as a practical method of cultural learning. It also analyzed learners' attitudes toward cultural learning through the aforementioned activities and examined considerations for holding cultural classes in the future. The research involved conducting a class underlain by four stages: warm-up, a cultural item comparison activity, wrap-up, and opinion submission. Data were collected through self-opinion journals and open-ended questionnaires, after which they were qualitatively analyzed. The results showed that the learners were highly satisfied with cultural learning through cultural comparison activities (73.7%) because of the efficiency of such a learning method, opportunities for proactive learning through interaction, increased interest and motivation, and the fact that it helps them understand their own cultures. We need to develop activities that enable learners to participate in a variety of ways through the mutual exchange of opinions when planning cultural classes. Pedagogical implications for integrated language and cultural classes are provided.

Comparison of CME radial velocities from the flux rope model and the ice cream cone model

  • Kim, Tae-Hyeon;Moon, Yong-Jae;Na, Hyeon-Ok
    • Bulletin of the Korean Space Science Society
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    • 2011.04a
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    • pp.28.2-28.2
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    • 2011
  • Coronal Mass Ejections (CMEs) are enormous eruptions of plasma ejected from the Sun into interplanetary space, and mainly responsible for geomagnetic storms and solar energetic particle events. It is very important to infer their direction of propagation, speed and their 3-dimensional configurations in terms of space weather forecast. Two STEREO satellites provide us with 3-dimensional stereoscopic measurements. Using the STEREO observations, we can determine the 3-dimensional structure and radial velocity of the CME. In this study, we applied three different methods to the 2008 April 26 event: (1) Ice cream Cone Model by Xue (2005) using the SOHO/LASCO data, (2) Flux rope model by Thernisien (2009) using the STEREO/SECCHI data, (3) Flux rope model with zero angle using the STEREO/SECCHI data. The last method in which separation angle of flux rope is zero, is similar to the ice cream cone model morphologically. The comparison shows that the radial speeds from three methods are estimated to be about 750km/s and are within ${\pm}120km/s$. We will extend this comparison to other CMEs observed by STEREO and SOHO/LASCO.

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Evaluation of Daily Jump Compensation Methods for GPS Carrier Phase Data

  • Lee, Young Kyu;Yang, Sung-Hoon;Lee, Chang Bok;Lee, Jong Koo
    • Journal of Positioning, Navigation, and Timing
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    • v.4 no.1
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    • pp.25-31
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    • 2015
  • In this paper, we described the timing-offset comparison results between various daily jump compensation methods for GPS carrier phase (CP) measurement data. For the performance comparison, we used about 70 days GPS measurement data obtained from two GPS geodetic receivers which share the reference 1 PPS and RF signals and closely located in each other within a few meters. From the experiment results, the followings were observed. First, daily jumps existed in CP measurements depend on not only the environment but also the receiver which will make a full compensation be very hard or impossible. Second, clock bias can be occurred in the case of using a simple compensation with accumulation of daily jumps but it could be used in a short-period frequency comparison campaign (less than about 7 days) despite of its drawback.