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      • Columnar variant of papillary carcinoma in the thyroglossal duct cyst with progression to lung metastasis

        윤유정,박혜정,이영기,조용인,강버들,김현주,이중희,진무년,신동엽 영남대학교 의과대학 2014 Yeungnam University Journal of Medicine Vol.31 No.2

        Thyroglossal duct cyst (TGDC) carcinoma generally shows a favorable prognosis. If metastasis is present latently, it may not threaten the patient’s life immediately. It has been shown, however, that larger than 1 cm papillary carcinoma (PC), level VI metastasis to the lymph node (LN), which is the nearest to the thyroid, independently predicts a worse prognosis. In the case presented herein, a 61-year-old female patient was diagnosed with an about 3 cm PC in the TGDC, particularly the columnar variant subtype, one of the aggressive variants. She had occult papillary thyroid microcarcinoma, but no LN metastasis. Even though she underwent the Sistrunk procedure and total thyroidectomy with central compartment neck dissection followed by high-dose radioactive iodine remnant ablation, however, the cancer cells spread to level IV neck LN, and finally to the lung. Therefore, when a patient is diagnosed with an aggressive histologic variant of PC in the TGDC, even without LN metastasis, the invasive surgical approach and close postoperative surveillance are necessary, with consideration of the risk of disease progression. Therefore, if it is possible to stratify the risk for patients, higher-risk patients can be offered a more invasive therapeutic approach.

      • KCI등재
      • KCI등재

        한국인 학습자의 중국어 보어 운용 경향성 분석-첨가와 누락을 중심으로

        윤유정 중앙대학교 외국학연구소 2014 외국학연구 Vol.- No.28

        The purpose of this paper is to analyze Korean learners’ operating trend of Chinese complements. To do this, first of all we have classified Chinese complements into six sub-classes: Resultative Complements, Directional Complements, Possibility Complements, Degreed Complements, Quantitative Complements and Prepositional Phrase Complements. Then we do quantitative and qualitative analyses of complement addition errors and omission errors based on interlingual corpus. Lastly, we compare addition errors and omission errors of the same predicate with the same type of complement in order to understand Korean learners’ actual condition of Chinese complement use.

      • KCI등재
      • KCI등재

        Annual Rehabilitation Costs Estimation for a Bridge Network

        윤유정,Makarand Hastak 대한토목학회 2017 KSCE JOURNAL OF CIVIL ENGINEERING Vol.21 No.1

        The objective of this paper is to present an integrated multi-year rehabilitation planning model (IMRPM) for a bridge network. A multi-year capital program can provide an explicit, steady vision for financial and expenditure strategies as well as improve the efficiency of the allocation of limited resources. Estimating the precise annual rehabilitation needs for sound bridge management is essential to achieving the goals of a multi-year capital program; however, the current rehabilitation planning techniques tend to underestimate the annual rehabilitation costs by overlooking the potential rehabilitation needs which can arise by delaying of Maintenance/Repair (M/R) projects due to insufficient annual funding. The presented model integrates a multi-year rehabilitation capital program into an M/R program within the same multi-year period. The model engages a genetic algorithm for a project-level analysis process to identify M/R and rehabilitation projects over a defined multi-year analysis period (e.g., three, five, or ten years) for each M/R program and rehabilitation program. As a result of this process, the annual rehabilitation costs during a multi-year period initially can be estimated. Then, the initial annual rehabilitation costs can be finalized by including newly-identified rehabilitation needs, which are developed through the annual reanalysis process resulting from the delay of M/R projects in prior years. The annual reanalysis process considers the concept of time floats for M/R projects. The presented model is expected to be useful to efficiently control delayed M/R projects and to provide more reliable estimation for annual rehabilitation needs.

      • KCI우수등재

        영 변환 모형 산포형태모수와 두 적합도 검정통계량 사이의 유사성 비교

        윤유정,김홍기,Yun, Yujeong,Kim, Honggie 한국데이터정보과학회 2017 한국데이터정보과학회지 Vol.28 No.3

        통계청 인구총조사의 출생아 수 자료는 우리가 쉽게 접할 수 있는 가산 자료이며 국가경쟁력 제고를 위한 정부의 출산정책 결정 및 그 기대효과 분석의 기반이 되는 자료이다. 출생아 수 자료 분석에 있어서 포아송 모형 등 가산 모형이 우월하다는 선행 연구결과에 의하여 가산 모형을 통한 자료 분석방법이 활용되고 있다. 이 때 가산 모형에서 가장 많이 사용하는 포아송 모형은 균등상포라는 제한적인 가정을 토대로 하기 때문에 출생아 수 자료 분석에 이 포아송 모형을 그대로 적용한다면 정보의 손실과 편향추정을 피할 수 없게 된다. 이러한 한계를 극복하기 위해 Ghosh 와 Kim (2007)은 영 과잉과 부족으로 인한 과대산포와 과소산포를 동시에 설명할 수 있는 영 변환 모형 (zero-altered model)을 제안하였다. 본 논문에서는 Ghosh 와 Kim (2007)의 영 변환 모형을 적용하여 실제 출생아수분포에서 영 변환 모형의 산포형태모수 ${\delta}$를 도출하고 그 역할에 대하여 분석한다. 그리고 관측분포에서의 산포형태모수 ${\delta}$와 이론적분포와의 차이를 비교하기 위한 적합도 검정통계량과의 유사성을 확인한다. We often observe count data that exhibit over-dispersion, originating from too many zeros, and under-dispersion, originating from too few zeros. To handle this types of problems, the zero-altered distribution model is designed by Ghosh and Kim in 2007. Their model can control both over-dispersion and under-dispersion with a single parameter, which had been impossible ever. The dispersion type depends on the sign of the parameter ${\delta}$ in zero-altered distribution. In this study, we demonstrate the role of the dispersion type parameter ${\delta}$ through the data of the number of births in Korea. Employing both the chi-square statistic and the Kolmogorov statistic for goodness-of-fit, we also explained any difference between the theoretical distribution and the observed one that exhibits either over-dispersion or under-dispersion. Finally this study shows whether the test statistics for goodness-of-fit show any similarity with the role of the dispersion type parameter ${\delta}$ or not.

      • KCI등재

        중국어 다항보어문 속 목적어와 보어의 순서에 나타난 도상성 연구

        윤유정 중앙대학교 외국학연구소 2018 외국학연구 Vol.- No.44

        This article analyzes the primary word order and the secondary word order of object and complement in Chinese multiple complements sentences. The primary word order of a multiple complements sentence in which the object appears after the predicate can be divided into ‘V+C1+O+C2’ and ‘V+C1+C2+O’. At this time, the position of the object is determined according to the characteristics of the object (place name, common noun, pronoun) and the type and characteristics of the complement. The C1 that appears immediately after the predicate is mainly the resultative complement, the possibility complement and the direction complement. The C2 which is distant from the predicate is the quantity complement. ‘Iconicity of proximity’, ‘relative adjacency’ and ‘adjacency of similar elements’ are used to interpret the word order between complements. The location of the object in the multiple complements sentence is described using the concept of ‘identifiability’. The secondary word order of the multiple complements sentence is mainly a case where a prepositional phrase complement appears. In this case, the object is shifted before the predicate by using the ‘ba/jiang’ to construct a topic sentence. If the prepositional phrase complement appears together with the resultative complement, the prepositional phrase complement appears after the resultative complement. If a prepositional phrase complement appears with a direction complement which is ‘lai, qu’, the prepositional phrase complement appears before the direction complement. If a prepositional phrase complement appears with the direction complement which is ‘hui, kai, qi’, the prepositional phrase complement appears after the direction complement. This order reflects ‘Sequential iconicity’. When a prepositional phrase complement appears with a quantity complement, the prepositional phrase complement represents the place and the quantity complement represents the time. In general, conceptually close to the verb is a place rather than a time, so the prepositional phrase complement appears before the quantity complement. This order reflects ‘Iconicity of proximity’.

      • KCI등재

        현대중국어 분열문 및 준분열문

        윤유정 중앙대학교 외국학연구소 2019 외국학연구 Vol.- No.48

        This paper confirms the scope of Cleft sentence and Pseudo-cleft sentence in Modern Chinese, and analyzes the pragmatic functions of two structures in context. The contents and results of the research are as follows: First, Cleft sentence only includes “Shi……de1” which indicates the past, and “shi……de2” which indicates the assertion. If the element before the “shi” is not from the NP node, if “de” appears before the object in the transitive sentence, if change the meaning after changing of position of front and back components of “shi”, in these cases, all are included in the cleft sentence. However, if numerals or demonstratives appears after “shi”, it is not included in the cleft sentence. Second, the pseudo-cleft sentence can be formed as “…(zuo)deshi…”, and not only the noun component but also the verb’s component can appear after “shi” as focus. If head appears after “de” or if the noun component after “shi” is indefinite, it is not included in the pseudo-cleft sentence. Third, “shi” is the focus marker in the cleft sentence which generally emphasizes the right component, but occasionally emphasizes the left component of “shi” in the contrastive sentences. If focus appears after “shi” and at the same time object appears after “de”, “shi” indicates the primary focus and “de” indicates the secondary focus. Thus “de” also sometimes functions as a focus marker. Fourth, the information structure of the cleft sentence is “presupposition+focus” or “focus+presupposition”. It functions to present or contrast the focus element as important information about the already mentioned information in the precedent sentence. However, the pseudo-cleft sentences all have a “presupposition+focus” structure, and focus is placed in the end of sentence, which leads to a new topic to be described in the following sentence.

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