• Title/Summary/Keyword: test function

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Partial Discharge Pattern Recognition of Cast Resin Current Transformers Using Radial Basis Function Neural Network

  • Chang, Wen-Yeau
    • Journal of Electrical Engineering and Technology
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    • v.9 no.1
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    • pp.293-300
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    • 2014
  • This paper proposes a novel pattern recognition approach based on the radial basis function (RBF) neural network for identifying insulation defects of high-voltage electrical apparatus arising from partial discharge (PD). Pattern recognition of PD is used for identifying defects causing the PD, such as internal discharge, external discharge, corona, etc. This information is vital for estimating the harmfulness of the discharge in the insulation. Since an insulation defect, such as one resulting from PD, would have a corresponding particular pattern, pattern recognition of PD is significant means to discriminate insulation conditions of high-voltage electrical apparatus. To verify the proposed approach, experiments were conducted to demonstrate the field-test PD pattern recognition of cast resin current transformer (CRCT) models. These tests used artificial defects created in order to produce the common PD activities of CRCTs by using feature vectors of field-test PD patterns. The significant features are extracted by using nonlinear principal component analysis (NLPCA) method. The experimental data are found to be in close agreement with the recognized data. The test results show that the proposed approach is efficient and reliable.

A Study on the Dynamic Relationship between Cultural Industry and Economic Growth

  • He, Yugang
    • The Journal of Asian Finance, Economics and Business
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    • v.5 no.4
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    • pp.85-94
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    • 2018
  • The cultural industry is treated as the sunrise industry in modern society. It has taken an increasing role in promoting the economic growth. Due to this, this paper attempts to explore the dynamic relationship between cultural industry and the economic growth. On the grounds of Cobb-Douglas production function, the cultural industry is regarded as a determinant such as the labor input and the capital input to impact the economic growth. Meanwhile, the quarterly datum form 2000-Q1 to 2017-Q4 are employed to perform an empirical analysis via the vector error correction model. The GDP is treated as an independent variable. The input of capital, the input of labor and the total input of cultural industry are treated as dependent variables. Furthermore, a menu of statistical approaches such as the co-integration test and the impulse response function will be used to testify the dynamic relationship between cultural industry and economic growth. Via the Johansen co-integration test, the results report that the cultural industry has a obviously positive effect on economic growth. Through the vector error correction estimation, the results also report that the cultural industry also has a significantly positive effect on economic growth, but less than that of the Johansen co-integration test. This paper provides a view that the cultural industry is a kind of a determinant to promote the economic growth. Therefore, the China's government should pay much attention to the cultural industry construction.

[ $PERIOTEST^{(R)}$ ] ASSESSMENT OF DENTAL IMPLANT MOBILITY : A CLINCAL STUDY ($PerioTest^{(R)}$를 이용한 임플란트 동요도에 관한 임상적 연구)

  • Kim, Sun-Jai;Han, Dong-Hoo
    • The Journal of Korean Academy of Prosthodontics
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    • v.36 no.5
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    • pp.758-771
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    • 1998
  • Assessment of implant mobility is an important and reliable method to clinically evaluate implant stability. PerioTest is a precise and reproducible device that cam dynamically measure the reaction of damping characteristics of peri-implant tissue. The aim of this study is to evaluate the effects of amount of implant surface area, diameter, type, implantation site, degrees of cortical engagement, and length of time in function on PTVs and to find out the most determining factor on PTVs. The results are as follows 1. 5.0mm diameter implants show significantly lower PTV than that of 3.75mm diameter implants. 2. PTV in the mandible is significantly lower than that of the maxilla 3. In the maxilla, there is no significant difference in PTV during the first year of implant function, but during the second year a significant decrease in PTV is noted. 4. In the mandible, there is a significant decrease in PTV during the first and second year of implant function. 5. Implantation site seems to be the most determining factor on PTV among the influencing factors in this study. In conclusion, the amount of implant surface area, type, degrees of cortical engagement had no significant effect on PTV, but installation site and diameter influenced significantly on PTV

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A Case Study about Soyangin Heat Sensation in the Chest(胸膈熱證) Patient Diagnosed as Hyperthyroidism, Used Sasang-bang with Western Medicine (갑상선기능항진증으로 진단된 소양인(少陽人) 흉격열증(胸膈熱證) 환자의 사상방${/cdot}$양약 병용 투여에 의한 치험 1례(例))

  • Lee, Kyung-Lo;Lim, Mi-Kyung;Song, Jeong-Mo;Kim, Young-Won
    • Journal of Sasang Constitutional Medicine
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    • v.18 no.3
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    • pp.195-201
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    • 2006
  • 1. Objectives The purpose of this case is to report that a Soyangin Heat sensation in the chest patient Diagnosed as Hyperthyroidism was treated with 'Yangkyuksanhwa-tang' and Antithyroid drugs in conjunction and then her symptom and thyroid function test results improved. 2. Methods We diagnosed her Hypetthyroidism on Soyangin Syndrome. So we treated her with 'Yangkyuksanhwa-tang' and Antithyroid drugs in combination. 3. Results This patient's symptom and thyroid function test results were improved 4. Conclusions By a combined treatment on a Soyangin Heat sensation in the chest patient Diagnosed as Hypetthyroidism, her symptom and thyroid function test results were improved. This case study showed an efficient results by giving Yangkyuksanhwa-tang in treatment of Soyangin Heat sensation in the chest patient.

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ANALYSIS OF A STATION BLACKOUT SCENARIO WITH AN ATLAS TEST

  • Kim, Yeon-Sik;Yu, Xin-Guo;Kang, Kyoung-Ho;Park, Hyun-Sik;Cho, Seok;Choi, Ki-Yong
    • Nuclear Engineering and Technology
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    • v.45 no.2
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    • pp.179-190
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    • 2013
  • A station blackout experiment called SBO-01 was performed at the ATLAS facility. From the SBO-01 test, the station blackout scenario can be characterized into two typical phases: A first phase characterized by decay heat removal through secondary safety valves until the SG dryouts, and a second phase characterized by an energy release through a blowdown of the primary system after the SG dryouts. During the second phase, some physical phenomena of the change over a pressurizer function, i.e., the pressurizer being full before the POSRV $1^{st}$ opening and then its function being taken by the RV, and the termination of normal natural circulation flow were identified. Finally, a core heatup occurred at a low core water level, although under a significant amount of PZR inventory, whose drainage seemed to be hindered owing to the pressurizer function by the RV. The transient of SBO-01 is well reproduced in the calculation using the MARS code.

A Experimental study for obtaining material function of very soft clay (초연약 점토의 구성관계 산정에 관한 실험적 연구)

  • Lee, Song;Kang, Myung-Chan
    • Proceedings of the Korean Geotechical Society Conference
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    • 2002.03a
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    • pp.491-498
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    • 2002
  • Dredged and reclaimed soft clays form slurry state which is very high water content and very low shear strength, experience large self-weight consolidation, nonlinear compressibility and permeability phenomenon would take place. In this case, a material functions which represent variety effective stress-void ratio-permeability relation (especially very low effective stress), are should be determined to predict nonlinear finite strain consolidation phenomenon forehand In this study, large slurry consolidometer with a 380mm diameter and a 1400mm height which is able to consolidation and permeability test, was developed to determine material function of very soft clay with a 500% initial water content clay, self-weight consolidation and low stress level consolidation (1Kpa, 3Kpa, 6Kpa, 12Kpa) was conducted and after each consolidation step permeability test also conducted. after final consolidation step, a constant rate of strain consolidation was conducted with undisturbed sample obtained from the large consolidometer. On the above result, material function was determined and laboratory test was modelled to evaluate its validity, numerical analysis on th field was compared to other method.

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Effects of Multifactorial and Follow-up Programs Applying a Capacity Building Strategy: Focusing on Older Adults Living in a Urban-rural Complex Area

  • Han, Song YI;Ko, Young;Kim, Hee Ryang;Kim, Jiyoun
    • Research in Community and Public Health Nursing
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    • v.30 no.2
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    • pp.243-255
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    • 2019
  • Purpose: The purpose of this study is to examine effects of a multifactorial program for preventing the frailty of older adults and effects of a follow-up program applying a capacity building strategy. Methods: A quasi-experimental pretest-posttest design was used for the nonequivalent control group. The follow-up group (n=75) and non-follow-up group (n=68) received the same multifactorial program comprising muscle strength exercise, cognitive training, and psychosocial programs for 12 weeks. After completion of multifactorial program, the follow-up group took follow-up programs applying the capacity building strategy for following 12 weeks. The data of physical function, cognitive function, and psychological function, and self-rated health were collected from both groups three times: before intervention, after intervention, and 12 weeks after intervention. The data were analyzed using $x^2$ test and t-test. Results: In comparison with the non-follow-up group, the scores of Timed Up & Go Test, and physical activities energy expenditure were significantly improved in the follow-up group. Conclusion: These results indicate that a multifactorial program with follow-up adapting the strategies of capacity building for the older adults group is feasible to prevent the physical frailty in community.

Development of 3-ch. Vibration Generator S/W for Virtual Test (가상시험을 위한 소프트웨어 기반 3채널 가진기 개발)

  • Kim, Kwang-Suk
    • Journal of the Korea Convergence Society
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    • v.12 no.1
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    • pp.205-210
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    • 2021
  • In this study, I studied how to generate input values to achieve the same value as the target value. The general procedures are explained to regenerate the excitation input, which is made by using the frequency response function between input-output. In this study, a mount model connected by a bushing was used as a numerical model. The response value for the excitation input was compared with the target value. The excitation input was corrected to obtain the same response as the target value. Through the iterative process, the reconstructed input value was obtained to have the same response as the test.

The Effects of Proprioceptive Neuromuscular Facilitation on Lower Extremity Functions of Chronic Stroke Patients (고유수용성신경근촉진법이 만성 뇌졸중환자의 하지기능에 미치는 효과)

  • Song, Hyun-Seung;Kim, Seok-Hwan
    • PNF and Movement
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    • v.12 no.4
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    • pp.225-232
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    • 2014
  • Purpose: The purpose of this study is to determine the effects of proprioceptive neuromuscular facilitation on the lower extremity function of chronic stroke patients. Methods: The participants consist of 26 chronic stroke patients. They were randomly assigned to either an experimental group (n=13) or a control group (n=13) and engaged in exercise three times per week for eight weeks. The experimental group engaged in proprioceptive neuromuscular facilitation exercises and the control group engaged in general mat exercises. To measure lower extremity strength, the sit to stand test and the static balance test (standing on one leg) were used. To measure the stability index (SI) and weight distribution index (WDI), a Tetrax Portable Multiple System (Tetrax Ltd, Israel) was used in addition to a static balance test (standing on one leg). Results: : Lower extremity strength and static balance showed a significant improvement in the experimental group (p<.05). The SI and WDI were significantly improved in the experimental group (p<.05) for tests of standing with their eyes open, standing with their eyes closed, and standing on a sponge with their eyes open. Conclusion: Proprioceptive neuromuscular facilitation exercises have confirmed that lower extremity function improves after exercise interventions in chronic stroke patients.

The Impact of Export Instability on Economic Growth: Evidence from Jordan

  • ABU-LILA, Ziad M.;ALGHAZO, Abdalwahab;GHAZO, Abdallah
    • The Journal of Asian Finance, Economics and Business
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    • v.8 no.8
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    • pp.13-19
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    • 2021
  • To provide empirical evidence on the impact of export instability on economic growth in developing countries, this study estimated the neoclassical production function using data of the Jordanian economy for the period 1995-2019. Real exports, real capital, and export instability were the independent variables in the production function. To determine the appropriate methodology for estimating the production function, the study conducted some preliminary tests, including the Augmented-Dickey Fuller (ADF), on the study data. The results of this test indicated that all study variables were stationary at first difference. Therefore, the Johanson cointegration test was applied to determine that there was cointegration between the study variables since the results of the former test indicated that there was one cointegration vector between these variables. The cointegration equation revealed a positive and statistically significant impact of real capital, real exports, and an indicator of export instability on economic growth. The most important policy implications for these results would be reducing the geographical concentration of exports through the expansion of free trade agreements (FTA) to enhance the positive impact of the instability of exports on economic growth. Moreover, the study recommends strengthening export-oriented actions to achieve higher levels of economic growth.