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Improved Dynamic Subjective Logic Model with Evidence Driven

  • Qiang, Jiao-Hong;Xin, Wang-Xin;Feng, Tian-Jun
    • Journal of Information Processing Systems
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    • 제11권4호
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    • pp.630-642
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    • 2015
  • In Jøsang's subjective logic, the fusion operator is not able to fuse three or more opinions at a time and it cannot consider the effect of time factors on fusion. Also, the base rate (a) and non-informative prior weight (C) could not change dynamically. In this paper, we propose an Improved Subjective Logic Model with Evidence Driven (ISLM-ED) that expands and enriches the subjective logic theory. It includes the multi-agent unified fusion operator and the dynamic function for the base rate (a) and the non-informative prior weight (C) through the changes in evidence. The multi-agent unified fusion operator not only meets the commutative and associative law but is also consistent with the researchers's cognitive rules. A strict mathematical proof was given by this paper. Finally, through the simulation experiments, the results show that the ISLM-ED is more reasonable and effective and that it can be better adapted to the changing environment.

Thiobacillus ferrooxidans에 의한 Pyrite의 생물학적 침출에 따른 기질 표면 특성변화 (Variation of Characteristics on the Surface of Pyrite as Microbial Leaching by Thiobacillus ferrooxidans Progresses)

  • 이인화;박천영
    • KSBB Journal
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    • 제16권3호
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    • pp.295-301
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    • 2001
  • Thiobacillus ferrooxid,$\alpha$ns와 pyrite 광석을 연마하여 resin에 고정한 시편을 대상으로 침출 시간에 따른 표면의 특성 변화를 EPMA 및 SEM-EDS를 이용하여 이미지와 원소구성비율에 따라 살펴보았다. 침출이 진행됨에 따라 표면의 철성분은 전체적으로 증가한 반면 원소황은 감소하는 경향을 나타냈다. 고배율에 익한 SEM 이미지에서 침출이 진행됨에 따라 도덧모양의 생성물이 침출 13일 경과 시점에 서 나타나 23일 경과 후까지 자라났으나 30일 경과 시점 에서는 표면전체에 새로운 층 생성된 결과로 나타났다. SEM 이미지 상에서 spot과 배경 지접의 원소 구성비를 EDS에 의하여 분석한 후 비교한 결과 초기에는 원소 구성비의 차이가 큰 값을 보이나 침출이 증가함에 따라 좌이가 나 지 않으며 이는 칩풀이 진행됨에 따라 pyrite 표면변이 접차 생성불이 칩착 되는 것으로 볼 수 있었다.

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Acoustic Emission 의 섬유파단 Source Location을 이용한 Carbon Fiber/Epoxy Composites의 계면특성 및 비파괴적 평가 (Interfacial and Nondestructive Evaluation of Single Carbon Fiber/Epoxy Composites by Fiber Fracture Source Location using Acoustic Emission)

  • Kong, Jin-Woo;Kim, Jin-Won;Park, Joung-Man;Yoon, Dong-Jin
    • 한국복합재료학회:학술대회논문집
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    • 한국복합재료학회 2001년도 추계학술발표대회 논문집
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    • pp.116-120
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    • 2001
  • Fiber fracture is one of the dominant failure phenomena to determine total mechanical properties in composites. Fiber fracture locations were measured by optical microscopic method and acoustic emission (AE) as functions of matrix toughness and surface treatment by the electrodeposition (ED), and then two methods were compared. Two AE sensors were attached on the epoxy specimen and fiber fracture signals were detected with elapsed time. The interfacial shear stress (IFSS) was measured using tensile fragmentation test and AE system. In ED-treated case, the number of the fiber fracture measured by an optical method and AE was more than that of the untreated case. The signal number measured by AE were rather smaller than the number of fragments measured by optical method, since some fiber fracture signals were lost while AE detection. However, one-to-one correspondence between the x-position location by AE and real break positions by optical method was generally established well. The fiber break source location using AE can be a valuable method to measure IFSS for semi- or nontransparent matrix composites nondestructively (NDT).

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In vivo Pharmacological Evaluation of Newly Synthesized Nonpeptidic $AT_1$ Receptor Antagonists in Rats

  • Lee, Byung-Ho;Shin, Hwa-Sup
    • Archives of Pharmacal Research
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    • 제17권4호
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    • pp.263-268
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    • 1994
  • This study was conducted to characterize the in vivo pharmacology of KR-30988, KR-30992 and losartan, new AT antagonists, given as i.v. cumulative doses, in two antimal models of high renin, conscious renal artery-ligated hypertensinve rats (RHRs) and nomotensive rats anesthetized with urethane (90 mg/kg, i.p.) and .alpha.-chloralose (90 mg/kg, i.p.), with a special emphasis on the phamacological characterization of the latter model. In conscious RHRs, KR-30988, KR-30992, losartan and captopril caused a dose-dependent decrease in blood pressure, their relative potencise ($ED_{20}$) being 0.057, 0.028, 0164 and 0.018 mg/kg, i.v., repectively. In anesthetized rats, 2 hours after anesthesia, plasma renin activity was increased from 7.31 tp 34.07 ng/ml/h, the level approximately 1.5 times greater than the highest level in RHRs. In anesthtized rats, the $ED_{20}$s for all four compounds were 0.004 mg/kg i.v., respectively. By comparison, $ED_{20}$sfrom anesthetized rats were 4 to 5 times smaller than those from conscious RHRs, with a good correlation (.gamma. = 0.999) noted between thetized rats to the hypotensive activity of the compounds and the same order of potencies intwo models. These results suggest that, in addition to PHRs, the normotensive rats anesthetized as above can serve as a suitable model for the rapid phamacological evaluation of $AT_1$ receptor antagonists.

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응급실 내원 암환자의 항암화학요법 부작용에 대한 후향적 조사연구 (Study on Cancer Patients Who Visited an Emergency Department with the Side Effects of Chemotherapy)

  • 임수정;이명선
    • 임상간호연구
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    • 제20권1호
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    • pp.75-89
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    • 2014
  • Purpose: This study was done to identify conditions of cancer patients who visited an emergency department (ED) with the side effects of chemotherapy. Methods: Data were collected retrospectively from medical records of 294 cancer patients who visited a tertiary hospital in 2009 for treatment of side effects of chemotherapy. Records were reviewed for characteristics of participants and side effects of chemotherapy. Data were analyzed using SPSS software. Results: ED Triage grade 3 was 81.6%. The hospitalization ratio was 72.8%, and 6.5% died during the admission. Most frequent side effects were thrombocytopenia (80.6%), anemia (74.5%), pain (52.0%), neutropenia (50.7%), and leucopenia (46.3%). The hospitalization group showed more severe leucopenia than the discharge group (p=.020). Patients in the group who died had higher scores for dyspnea compared to patients discharged or hospitalized (p<.05). Conclusion: Results of the study suggest that there is a special need to develop a system to manage side effects of chemotherapy. Also it is necessary to provide appropriate care and treatment with prompt initial evaluation when cancer patients with side effects of chemotherapy present in the ED. More effective educational discharge programs should also be developed to help these patients cope with various side effects of chemotherapy.

선형 초음파 전동기의 제작과 특성에 미치는 회전자의 가압력 (Fabrication of Linear Ultrasonic Motor and Effects of the Pressing Force Applied to Rotors on Characteristics)

  • 이명훈;우상호;김영균;김진수
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2000년도 하계학술대회 논문집 B
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    • pp.741-743
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    • 2000
  • In this paper the relationship between the pressing force applied to rotors and the characteristics of ultrasonic motor are discussed. The characteristics of ultrasonic motor using a piezoelectric vibrator were systematically studied. And these were applied to the construction of a card forwarding device. The principle of ultrasonic motor is to use an elliptical motion generated on the side of the vibrator, and the elliptical motion of the ultrasonic motor was obtained by complex oscillation of $L_1-B_4$ mode. As the experimental results. the forwarding speed of the card increased linearly as the pressing force applied to rotors increased. The forwarding speed of the card was 16.0 cm/s when the pressing force applied to rotors was 1 N. The forwarding force of the card increased linearly as the pressing force applied to rotors increased. The forwarding force of the card was 398 mN when the pressing force applied to rotors was 1 N. Therefore, this ultrasonic motor can be expected to be used for card-forwarding device and so on.

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응급실 간호사의 이직의도 영향요인 (Influencing Factors on Turnover Intention of Nurses in Emergency Department)

  • 맹수연;성미혜
    • 한국직업건강간호학회지
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    • 제24권2호
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    • pp.86-93
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    • 2015
  • Purpose: This study was to identify the factors determining the turnover intention of nurses in Emergency Department (ED). Methods: The subjects were 123 ED nurses working at 10 general hospitals in Busan, Korea. The data were collected from August 15th to September 22nd, 2013. The collected data were analyzed using the SPSS program through descriptive statistics, t-test, ANOVA, Pearson's correlation coefficients and stepwise multiple regression. Results: There were positive correlations between traumatic events experience and post-traumatic stress (r=.416, p<.001), between depression and traumatic events experience (r=.212, p=.001), between traumatic events experience and turnover intention (r=.289, p=.001), between post-traumatic stress and depression (r=.251, p=.005), and also between depression and turnover intention (r=.315, p<.001). Factors influencing turnover intention were depression and traumatic events experience with $R^2$ value 16.7%. Conclusion: Considering these results, it seems that the important factors determining the turnover intention of nurses in ED are depression and traumatic events experienced by nurses. Therefore, an active plan is needed to develop strategies for reducing nurses' depression and traumatic events experienced by nurses.