RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      검색결과 좁혀 보기

      선택해제
      • 좁혀본 항목 보기순서

        • 원문유무
        • 음성지원유무
        • 원문제공처
          펼치기
        • 등재정보
          펼치기
        • 학술지명
          펼치기
        • 주제분류
          펼치기
        • 발행연도
          펼치기
        • 작성언어
          펼치기

      오늘 본 자료

      • 오늘 본 자료가 없습니다.
      더보기
      • 무료
      • 기관 내 무료
      • 유료
      • KCI등재

        Liquid Metal Embrittlement of Resistance Spot Welded 1180 TRIP Steel: Effect of Electrode Force on Cracking Behavior

        Du‑Youl Choi,Ashutosh Sharma,Sang‑Ho Uhm,Jae Pil Jung 대한금속·재료학회 2019 METALS AND MATERIALS International Vol.25 No.1

        Liquid metal embrittlement (LME) caused cracking of Galvanized transformation induced plasticity steels was investigatedduring resistance spot welding (RSW). Effect of electrode force (3–5 kN) for a weld time of 400, and 800 ms on crack resistanceof TRIP steel was examined in relation to LME phenomenon. The microstructural characteristics of spot weld jointsand LME cracking tendency were investigated using dye penetration tests, optical microscopy, scanning electron microscopytogether with energy dispersive X-ray spectroscopy. It was found that as the electrode force increases, the crack size decreasesdue to a fast increase in crack tip temperature which rises further with more holding time up to 800 ms in high temperaturezone. Least amount of crack size was observed at 5 kN electrode force and 400 ms of welding time. Finally, the experimentalresults have also been simulated by finite element modeling (FEM) to find suitable mechanism of crack formation, and acombination of 4 kN and 400 ms was suggested for the crack free and less thermal deformation in the spot welded TRIP steel.

      • KCI등재

        A correlation for heat of vaporization of pure compounds

        Dušan K. Grozdanic,Jovan D. Jovanovic 한국화학공학회 2008 Korean Journal of Chemical Engineering Vol.25 No.6

        Twenty-seven selected equations were tested on 162 compounds with 1958 calorimetric data for their abilities to reflect the temperature influence on the heat of vaporization of pure compounds. A new equation is recommended (overall percent deviation 0.27% and percent deviation 0.59% above 0.9Tr).

      • SCOPUSKCI등재
      • KCI등재

        독일에서의 화행론의 수용과 변용

        김두규 대한언어학회 1999 언어학 Vol.7 No.2

        Kim, Du-Gyu. 1999. Acceptance and Transformation of Speech Act Theory in Germany. Linguistics 7-2, 289-302. Speech act theory was essentially discussed by linguistic philosophers such as J. L. Austin and J. R. Searle, who were subject to the influence of L. Wittgenstein. Therefore speech act theory has been .principally the subject of the linguistic philosophers. As the speech act theory was introduced in Germany since the late 1970's, it was accepted and transformed by some linguists such as F. Hundsnurscher, G. Hindelang and W. Franke. This paper explores the transformed forms of the orthodox speech act theory, namely 'the extended speech act theory' and 'the dialogical grammar'. (Woosuk University)

      • KCI등재

        브레히트의 새로운 해석 시론(試論) : 브레히트 언어관

        김두규 대한언어학회 1998 언어학 Vol.6 No.2

        Kim, Du-Gyu. 1998. B. Brecht's View of Language. Linguistics, 6-2, 371-385. The current interpretation of Brecht's drama 『Mr. Puntila and His Slave Matti』 was often based on the tradition of Marxism, which has led to a unilateral interpretation Brecht was a Marxist. Therefore his works, including the above-mentioned drama, must be interpreted from the standpoint of the struggle of the classes. If we are to fully understand the true meaning of his works, we must place focus on Brecht's method of language use, which has been nearly ignored. This paper purposes to trace out the delicate phrase and method of language use employed in the drama 『Mr. Puntila and His Slave Mattia』 which is frequently noticed in the use of satire, parody, and comic expression. (Woosuk University)

      • SCOPUSKCI등재

        Generic Competency Model: Business Graduate Key Competencies for Successful Working at Trading Companies - Case Study from the Czech Republic

        Radim Duš,다 People&Global Business Association 2021 Global Business and Finance Review Vol.26 No.4

        Purpose: The aim of this paper is to create a generic competency model based on the entry-level positions’ requirements of human resource managers in trading companies operating in the Czech Republic. The proposed model should define an optimal set of key competencies that a competent graduate of business degree should have to be successful in specific selection processes for different graduate jobs in trading companies and thus be successful in performing job duties. Design/methodology/approach: The research question for this study was which key competencies business graduates need the most for entry-level positions in the field of trading and which ideal behavior is expected for such competencies. Within the questionnaire survey, the degree of significance of the defined key competencies was subsequently determined. The target population consisted of trading companies with 25 - 249 employees based and operating in the Czech Republic that are willing to hire fresh graduates for entry-level positions. The quantitative data was finally obtained from 419 companies. On the basis of the data analysis results, a generic competency model of a university graduate of business degree was created. Findings: The generic model developed on the basis of the data from trading companies consists of two parts. It defines an optimal set of 6 key competencies as well as the expected behavior that a competent business graduate should have to succeed in specific selection processes for various positions in trading companies that require university education, and subsequently, to be successful in performing jobs in the trade sector. Research limitations/implications: The research limitations are caused mainly by two factors: the company size and products that the trading company is (re)selling. Although specific key competencies can be rated as very important by two different recruiters in the questionnaire, requirements, and expectations of a small company operating in an extremely competitive environment may be significantly higher than in the case of company with large staff and an extensive customer base, or vice versa. Originality/value: The resulting competency model can make the selection process more transparent for both recruiters and job candidates because of established standards concerning desirable key competencies for such positions in trading companies. At the same time, this tool can be an acceleration and suitable starting point for more extensive implementation of the modern competency-based approach for economics and business degrees at universities.

      • KCI등재

        Impact of fuel temperature on nuclear core design calculations

        Čalič Dušan,Snoj Luka,Kromar Marjan 한국원자력학회 2024 Nuclear Engineering and Technology Vol.56 No.9

        The operation of a nuclear power plant relies on precalculated nuclear design predictions based on core calculations of various reactor states. The fuel temperature is a crucial factor in determining the reactor fuel behavior, but assessing the temperature variation in a fuel pellet taking into account neutron transport is challenging. Detailed simulation of the temperature behavior within the fuel pellet can be obtained by coupling of Monte Carlo neutron transport codes with thermal-hydraulics solvers. However, this approach is not practical for standard nuclear design calculations, and computationally cheaper and faster methods must be used. In nuclear core simulators, a concept of a single "effective temperature" that yields the same neutron response as in the case of the actual temperature shape is mainly applied. This paper evaluates various fuel temperature models used in nuclear core simulation calculations, ultimately recommending a new effective temperature model that considers the burnup correction.

      • KCI등재

        Measurement of nuclear fuel assembly’s bow from visual inspection’s video record

        Plašienka Dušan,Knotek Jaroslav,Kopeć Marcin,Malá Martina,Blažek Jan 한국원자력학회 2023 Nuclear Engineering and Technology Vol.55 No.4

        The bow of the nuclear fuel assembly is a well-known phenomenon. One of the vital criteria during the history of nuclear fuel development has been fuel assembly’s mechanical stability. Once present, the fuel assembly bow can lead to safety issues like excessive water gap and power redistribution or even incomplete rod insertion (IRI). The extensive bow can result in assembly handling and loading problems. This is why the fuel assembly’s bow is one of the most often controlled geometrical factors during periodic fuel inspections for VVER when compared e.g. to on-site fuel rod gap measurements or other instrumental measurements performed on-site. Our proposed screening method uses existing video records for fuel inspection. We establish video frames normalization and aggregation for the purposes of bow measurement. The whole process is done by digital image processing algorithms which analyze rotations of video frames, extract angles whose source is the fuel set torsion, and reconstruct torsion schema. This approach provides results comparable to the commonly utilized method. We tested this new approach in real operation on 19 fuel assemblies with different campaign numbers and designs, where the average deviation from other methods was less than 2 % on average. Due to the fact, that the method has not yet been validated during full scale measurements of the fuel inspection, the preliminary results stand for that we recommend this method as a complementary part of standard bow measurement procedures to increase measurement robustness, lower time consumption and preserve or increase accuracy. After completed validation it is expected that the proposed method allows standalone fuel assembly bow measurements.

      • KCI등재

        와동내에 조사된 열의 전도양상에 관한 연구

        윤현두,허선,김재곤,이두철,백병주 大韓小兒齒科學會 1998 大韓小兒齒科學會誌 Vol.25 No.3

        The purpose if this study was to evaluate temperature change occurred in enamel, dentin and pulp due to the heat from cavity prepration with laser. We made three models had different cavity depth : cavity depth of model Awas 3.52mm, model B was 2.32mm, model C was 1.16mm. We irradiated cavity base with thermal capacity of 30J,100J,300J/㎤s during few seconds and studied the change of temperature in tooth during 10 seconds, and estimated change of thermal capacity by different irradiated site and exposure time. AT 300j/㎤s irradiation for 2 seconds, the temperature of irradiated surface was elevated fast according to irradiated thermal energy during I second, In proportion to continuous exposure time, temperature elevated slowly The surface temperature was 1370℃. After discontinue of thermal irradiation, the heat of irradiated surface was diffused in dentin and pulp and the greatest temperature was made, The greatest temperature was disappeared within 10 seconds The greatest temperature of the inner part of model brought about very severe change by different depth. Temperature in pulp was raised by the greater irradiated energy density and exposure time.

      • KCI등재

        의미적 장(semantic field)' 이론에 의한 한국어와 독일어 비교 연구

        김두규 대한언어학회 2000 언어학 Vol.8 No.1

        Kim, Du-Gyu. 2000. A Comparative Study of Korean and German According to the Semantic Field Theory. Linguistics 8-1, 191-206. The purpose of this paper is to compare some words in Korean and German, based on the semantic field, in order to show the differences of two languages and their reasons. The objects of comparison in semantic field are as follows: `go', 'die', 'come', 'words of family relation', 'academic grade' and 'words of mutual designations'. For example, the semantic field go' in German is composed of three divisions, whereas the semantic field go' in Korean is composed of only one section. This paper deals with the reason of this difference.(Woosuk University)

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼