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A. Vasiliev,E. Kolbe,H. Ferroukhi,R. Pittarello 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
The paper refers to an analysis of the `H.B. Robinson-2 Pressure Vessel Benchmark' with the MCNPX code. The benchmark is based on an experiment performed at an operating PWR reactor and includes measurements for both in-vessel and ex-vessel dosimeters.With the aim to enlarge the in-house validation database of the LWR neutron fluence assessments for the Swiss reactors, an MCNPX-based analysis of this benchmark was recently performed, using the general-purpose point-wise library JEFF-3.1. The analysis was done in compliance with the benchmark specifications and using the same or similar assumptions/approximations as employed by the previous participants in order to ensure consistency in the comparison of solutions.A detailed assessment of different libraries was not performed in these past calculations because of the rather poor statistical precision achieved at that time when modeling the high-energy reactions with MCNPX. In the course of recent additional optimization studies the variances of the calculation results have been significantly reduced, allowing thereby comparing the performance of different neutron data libraries for the analysis of this benchmark. This comparison is presented in this paper and includes an assessment of the data libraries JEFF-3.1, JEFF-3.1.1, ENDF/B-VII.0 and IRDF-2002. The differences observed in the results and their potential sources are discussed.
설현우,찬리스,권장우 한국재활복지공학회 2019 재활복지공학회논문지 Vol.13 No.4
최근 딥러닝에 관심이 증가하면서 컴퓨터가 시각적 이미지를 인식하여 문장으로 표현하는 이미지 캡션에 대하여 연구가 활발히 진행되고 있다. 기존 이미지 캡션은 대다수 영어로 공개된 데이터 셋을 이용하여 하고 있으며, 한국어 이미지 캡션을 생성하기 위해서는 영어 데이터를 번역하여 사용하거나 이미지 캡션 결과를 번역하고 있다. 하지만 국내에서도 한국어 이미지 캡션 데이터를 최근에서야 제공하고 있지만 데이터의 적합성을 알 수 없다. 본 논문에서는 한국어 이미지 데이터를 이용하여 한국어 이미지 캡션을 생성하였으며, 기존 영어 데이터와 비교하여 신뢰성을 살펴본다. 언어평가모델을 사용하여 한국어 이미지 캡션을 평가한 결과 BLEU-1 75.9, BLEU-2 59.7, BLEU-3 47.0, BLEU-4 36.9를 보였다. 기존의 영어 데이터보다 높은 BLEU 점수를 확인할 수 있었다. 또한 정성적 평가를 추가로 진행하여 생성된 문장 캡션이 이미지에 대하여 적절한 상황정보를 포함하는 캡션을 생성하는 것을 확인할 수 있었다. Recently, as interest in deep learning has increased, researches have been actively conducted on image captions in which a computer recognizes a visual image and expresses it in a sentence. Existing image captions are mostly made using a data set published in English, and in order to generate Korean image captions, English data is translated or image caption results are translated. In Korea, however, Korean image caption data has been recently provided, but the suitability of the data is unknown. In this paper, Korean image caption is generated using Korean image data, and its reliability is compared with existing English data. As a result of evaluating the results of Korean image caption using the language evaluation model, BLEU-1 75.9, BLEU-2 59.7, BLEU-3 47.0, and BLEU-4 36.9 were shown. The BLEU score was higher than the existing English data. Further qualitative assessments were also conducted to confirm that the generated sentence captions produced create captions that contain appropriate contextual information about the image.
Assessement of the JEFF-3.1.1 Neutron Data Library for FOR CSE of LWR Fuel Storage Pools
Edwin Kolbe,Alexander Vasiliev,Hakim Ferroukhi 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
A methodology for criticality safety evaluations (CSE) of light water reactor (LWR) compact storage pools and transport casks based on the Monte Carlo code MCNPX-2.5.0 was recently established at PSI. Validation calculations were performed applying a suite of 15 low-enriched thermal compound uranium and 4 mixed plutonium uranium thermal compound benchmarks extracted from the International Handbook of Evaluated Criticality Safety Benchmark Experiments. In a first part of this paper, the same validation suite, comprising in total 149 benchmark cases, is analyzed with the latest release of the JEFF-3.1.1 nuclear data library. The resulting bias is compared to the ones obtained previously with the ENDF/B-VII.0, JEFF-3.1 and JENDL-3.3 libraries. Secondly, in licensing-related studies for a new PWR commercial wet storage pool, a noticeable sensitivity upon the employed thermal neutron scattering S(α,β) matrix data was observed for water reflected configurations. By performing trend analyses with respect to the magnitude of the thermal flux for a selected subset of benchmark cases, various parameterizations of S(α,β) could be assessed including the one in JEFF-3.1.1. Finally, the benefits from applying several cross-section libraries in CSE will be pointed out.
Frequency of EGFR Mutations in Non-small Cell Lung Cancer Patients: Screening Data from West Siberia
Gervas, Polina,Ivanova, Anna,Vasiliev, Nikolay,Ananina, Olga,Zharkova, Olga,Rogovieva, Olga,Verzhbitskaya, Natalia,Didichuk, Ivan,Cheremisina, Olga,Popova, Natalia,Goldberg, Victor,Cherdyntsev, Evgeny Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.2
Background: Incorporation of molecular analysis of the epidermal growth factor receptor (EGFR) gene into routine clinical practice has shown great promise to provide personalized therapy of the non-small cell lung cancer (NSCLC) in the developed world. However, the genetic testing of EGFR mutations has not yet become routine clinical practice in territories remote from the central regions of Russia. Therefore, we aimed to study the frequency of major types of activating mutations of the EGFR gene in NSCLC patients residing in West Siberia. Materials and Methods: We examined EGFR mutations in exons 19 and 21 in 147 NSCLC patients (excluding squamous cell lung carcinomas) by real time polymerase chain reaction. Results: EGFR mutations were detected in 28 of the 147 (19%) patients. There were 19 (13%) cases with mutations in exon 19 and 9 cases (6%) in exon 21. Mutations were more frequently observed in women (42%, p=0.000) than in men (1%). A significantly higher incidence of EGFR mutations was observed in bronchioloalveolar carcinomas (28%, p=0.019) and in adenocarcinomas (21%, p=0.024) than in large cell carcinomas, mixed adenocarcinomas, and NOS (4%). The EGFR mutation rate was much higher in never-smokers than in smokers: 38% vs. 3% (p=0.000). The frequency of EGFR mutations in the Kemerovo and Tomsk regions was 19%. Conclusions: The incorporation of molecular analysis of the EGFR gene into routine clinical practice will allow clinicians to provide personalised therapy, resulting in a significant increase in survival rates and improvement in life quality of advanced NSCLC patients.
A. Dokhane,A. Vasiliev,M. Hursin,D. Rochman,H. Ferroukhi 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.5
The aim of this paper is to assess the reliability and accuracy of the PSI standard method, used in manyprevious works, for the quantification of ND uncertainties in the SPERT-III RIA transient, by quantifyingthe discrepancy between the actual inserted reactivity and the original static reactivity worth and theirassociated uncertainties. The assessment has shown that the inherent S3K neutron source renormalization scheme, introduced before starting the transient, alters the original static reactivity worth of thetransient CR and reduces the associated uncertainty due to the ND perturbation. In order to overcomethese limitations, two additional methods have been developed based on CR adjustment. The comparative study performed between the three methods has showed clearly the high sensitivity of the obtained results to the selected approach and pointed out the importance of using the right procedure inorder to simulate correctly the effect of ND uncertainties on the overall parameters in a RIA transient. This study has proven that the approach that allows matching the original static reactivity worth andstarting the transient from criticality is the most reliable method since it conservatively preserves theeffect of the ND uncertainties on the inserted reactivity during a RIA transient.
Sergei Shushunov,Lev Balashov,Aleftina Kravtsova,Ivan Krasnogorsky,Klaus Peter Latté,Andrei Vasiliev 한국식품영양과학회 2009 Journal of medicinal food Vol.12 No.5
Potentilla erecta, the tormentil, and its rhizome extracts have been known for a long time in traditional medicine as a remedy for the treatment of inflammations, wounds, and gastrointestinal disorders. Tormentil rhizomes have also been used as part of alcoholic beverages in Germany, the Ukraine, and Russia. Acute toxicity of an aqueous P. erecta rhizome extract was evaluated with a single dose administered by the intragastric route to rats and mice in dosages of 2.5g/kg and 6.8g/kg of body weight, respectively. Further, a single dose of this extract was applied intraperitoneally to rats and mice in dosages of 3.8 and 14.5g/kg of body weight, respectively. After an observation period of 2 weeks after intragastric administration and 3 days following intraperitoneal administration, no mortality or any changes in appearance, behavior, or body weight occurred for both rats and mice in the high dosages mentioned. Macroscopic and microscopic studies of the internal organs of these rodents revealed no pathological changes. The data are in line with the long-time traditional use of P. erecta rhizome extracts and results from recent clinical trials in which no signs of any toxic effects have been known after the administration of a P. erecta rhizome extract for the treatment of ulcerative colitis in adults and rotavirus-induced diarrhea in children. Thus P. erecta rhizome extracts should be considered safe with respect to acute toxicity when applied to humans.