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      • KCI등재

        경북지역 공공하수처리시설 유입수 및 방류수의 유기물 특성

        이기창,박영진,강귀화,정미옥,류동현,정상섭,이원태 대한환경공학회 2021 대한환경공학회지 Vol.43 No.5

        Objectives : This study aimed to provide scientific information on the characteristics of organic matters in influents and effluents of sewage treatment plants (STPs) in Gyeongbuk province, Korea, for better performance of treatment processes in the plants. Methods : We selected six STPs with each capacity over 30,000 m3/day in Gyeongbuk province, and analyzed water quality data in influents and effluents of the plants from 2013 to 2020. Also, the removal efficiencies of pollutants were assessed with the operational data. In 2020, characteristics and origins of dissolved organic matters (DOM) in influents and effluents were investigated using the fluorescence excitation emission matrix (FEEM) analysis. Results and Discussion : The average BOD5/CODMn ratios of influents and effluents from the STPs were 1.60 and 0.27, respectively. High variability in BOD5/CODMn ratios was observed for both influents and effluents. The CODMn/TOC ratios of the influents and effluents were the same with an average of 1.6. Although the biological treatment process was different for each STP, the organic matter removal efficiency was similar, and the TOC removal efficiency was 86.5~91.7%. The representative spectra of DOM identified through FEEM analysis was peak C (humic-acid like substance) region, and under the same carbon concentration (2 mg-C/L) the fluorescence intensity of effluents was stronger than influents possibly due to the influence of soluble microbial products (SMP). It was found that DOM of both influent and effluent originated from microorganisms, and the difference in water quality of DOM was statistically significant. Conclusions : The characteristics and fate of organic matters in influents and effluents of the six STPs were similar regardless of plant location. The results of this study can be used as basic information to efficiently control organic matters in the STPs. 목적: 본 연구는 경북지역 내 대표적인 공공하수처리시설의 유입수 및 유출수 내 유기물 특성을 분석하고 이를 통해 처리시설의 효율적인 운영을 도모하고자 수행하였다. 방법: 경북지역의 공공하수처리시설 중 시설규모 30,000 m3/day 이상인 6곳을 선정하여 2013~2020년 동안의 운영자료를 활용하여 유입수 및 방류수의 수질특성과 공정효율을 분석하였다. 2020년 시료는 형광 excitation emission matrix (EEM) 분석기법을 활용하여 유입수 및 방류수의 용존유기물질(Dissolved Organic Matter, DOM) 특성과 생성기원 등을 조사하였다. 결과 및 토의: 분석대상 공공하수처리시설의 유입수와 방류수의 BOD5/CODMn 평균비는 각각 1.60과 0.27이었다. BOD5/CODMn 비는 유입수 뿐만 아니라 생물학적처리가 된 방류수에서도 변동성이 크게 나타났다. 유입수와 방류수의 CODMn/TOC 비는 평균 1.6으로 동일하였다. 처리시설별로 생물학적공법이 상이하였지만 유기물 제거효율은유사하게 나타났으며, TOC의 경우 제거효율은 86.5~91.7%이었다. 형광 EEM 분석을 통해 확인된 DOM의 대표적EEM spectra는 peak C (humic-acid like substance) 영역이었고, 동일한 탄소농도(2 mg-C/L) 조건에서 방류수가 미생물의 대사활동으로 생성된 soluble microbial products (SMP)의 영향으로 형광강도가 더 강했다. 유입수와 방류수의 DOM은 모두 미생물로부터 기인한 것으로 나타났고, DOM의 수질성상 차이는 통계적으로 유의하였다. 결론: 조사대상 공공하수처리시설간 유입수 및 방류수에 대한 유기물질의 거동이 유사하고 다양한 유기물 성상지표가 비교적 균일한 값을 가져 본 연구의 결과가 향후 수처리공정에서 유기물질을 효율적으로 제어하기 위한 기초자료로 활용 가능할 것이다.

      • KCI등재

        추상적 의미 표상을 활용한 사진 자막 영작문 평가

        김동성 ( Kim Dong-sung ) 대한언어학회 2016 언어학 Vol.24 No.4

        Since story-telling has been used in evaluating the development of language skills, English language proficiency test such as TOEIC includes a caption writing test. This paper investigates how linguistically motivated features are used for automatically scoring a picture-description writing test. Specifically, we design to build scoring models with features under the principles of relevancy, appropriateness, and task-detailed description. For the experiment, we gather the caption writing corpus upon several images. We statistically compare different performances among 9 statistical assessment factors, revealing that Abstract Meaning Representation (AMR) produces the best results in predicting human raters` scores. AMR shows the best performance in capturing the similar logico-semantic structure(s) among various sentential forms.

      • KCI등재

        적대적 사례에 기반한 언어 모형의 한국어 격 교체 이해 능력 평가

        송상헌,노강산,박권식,신운섭,황동식 대한언어학회 2022 언어학 Vol.30 No.1

        In the field of deep learning-based language understanding, adversarial examples refer to deliberately constructed examples of data, slightly different from original examples. The contrasts between the original and adversarial examples are less perceivable to human readers, but the disruption has a notorious effect on the performance of machines. Thus, adversarial examples facilitate assessing whether and how a specific deep learning architecture (e.g., a language model) robustly works. Out of the multiple layers of linguistic structures, this study lays focus on a morphosyntactic phenomenon in Korean, namely, case alternation. We created a set of adversarial examples regarding case alternation, and then tested the morpho-syntactic ability of neural language models. We extracted the instances of case alternation from the Sejong Electronic Dictionary, and made use of mBERT and KR-BERT as the language models. The results (measured by means of surprisal) indicate that the language models are unexpectedly good at discerning case alternation in Korean. In addition, it turns out that the Korean-specific language model performs better than the multilingual model. These imply that an in-depth knowledge of linguistics is essential for creating adversarial examples in Korean.

      • KCI등재

        법언어학과 한국의 현황

        조기현 대한언어학회 2025 언어학 Vol.33 No.3

        This study examines forensic linguistics, addressing its conceptual foundations, historical development, research areas, methodologies, and key applications. It compares the current state and challenges of forensic linguistics in Korea with international trends. Language is a vital medium shaping thought, culture, and social norms, with linguistics extending from foundational studies to applied fields like forensic linguistics. This discipline systematically applies linguistic analysis in legal contexts, including legal text interpretation, courtroom discourse, authorship and speaker identification, and resolving disputes related to intellectual property and digital crimes. Globally, forensic linguistics has evolved from traditional stylistics to corpus-based and computational methods, and more recently AI-driven automation, broadening its practical applications across traditional and digital legal environments. However, forensic linguistics in Korea has developed slowly due to limited institutional infrastructure and a research focus mainly on discourse and regulatory language analysis. Nevertheless, the rising demands of cybercrime and synthetic media have increased the practical need for forensic linguistic expertise. This study analyzes 139 Korean publications from KCI, KISS, RISS, revealing growing interest in computational, corpus-based, and AI-integrated technologies alongside traditional legal language studies. The study highlights the urgent need for academic societies, standardized protocols, interdisciplinary education, data infrastructure, and international collaboration to advance forensic linguistics in Korea.

      • KCI등재

        타갈로그어의 유형론적 논점들에 대하여

        송경안,이은하 대한언어학회 2018 언어학 Vol.26 No.4

        Song, Kyung-An & Lee, Eun-Ha. (2018). On typological issues of the Tagalog language. The Linguistic Association of Korea Journal, 26(4), 177-201. The purpose of this paper is to explore typological issues and characteristics of the Tagalog language through which we would like to contribute to the typological discussion of this language in Korea. Tagalog is one of the frequently cited and discussed languages in modern studies of typology. Important issues thereby include ergativity,subject- hood, basic word order, and voice, which are closely related to one another. Because of the characteristic features of this language, a new linguistic term was invented, i.e. ‘the Philippine type clause,’ indicating the difficulties in finding a clear solution to the issues. In this paper we examine these issues on the basis of the language data we collected through interviews with a native speaker of Tagalog. Through our analysis of this data, we reached the conclusion that Tagalog could basically be considered an ergative language with the VSO basic word order, and a rich voice system. Beside this, the ‘copula’ construction, the distinction between nouns and verbs, the development of articles, the tense system, and the relative prominence of aspect are also important typological issues of the Tagalog language. No copula or copula-like element is attested in this language. Contrary to previous discussions such as those by Himmelmann (1987) and Sasse (1993), there seems to be a clear-cut distinction between nouns and verbs in Tagalog: only the verbs are conjugated, but not the nouns. It is also noteworthy that Tagalog has no tense system and it is an aspect-prominent language, i.e. the aspect is generally realized in sentences, unlike the tense and mood.

      • KCI등재

        한국 수어의 시제와 상에 대한 언어유형론적 검토

        정해권 대한언어학회 2023 언어학 Vol.31 No.4

        Tense is a grammatical category that expresses the temporal position of an event, while aspect is a way to look into the internal temporal composition of an event. In the description of tense and aspect in Korean Sign Language, there is confusion in the use of terms and descriptions of grammar. Therefore, it is necessary that the onomasiological approach to tense and aspects in Korean Sign Language, that is a perspective to analyze from concepts to symbols used in Linguistic Typology. Inflectional elements that appear along the time line can be set as grammaticalized tense expressions in a sign language. The leaning forward is analyzed as the near future tense, and the slow leaning forward is the future in Korean Sign Language. There is neither a perfective aspect that expresses a global view of the event nor an imperfective, so such viewpoint aspects are not useful for distinguishing aspects in Korean Sign Language. On the other hand, from the perspective of phasal aspects, depending on the stages of progression of an event, there are prospective, inchoative, progressive, conclusive, completive, and resultative, which are also found in Korean Sign Language. In terms of tense and aspects in Korean Sign Language, it is analyzed that aspect is being grammaticalized into a more basic grammatical category, and tense is still in the early stages of grammaticalization. This is because the way of viewing temporal phases of events is more iconic and easier to recognize.

      • KCI등재

        L2 화자의 영어 정관사 습득에 관한 연구 -UG를 통한 보편적 의미 자질에 대한 접근 가능성을 중심으로-

        이종근 대한언어학회 2012 언어학 Vol.20 No.2

        Onin et al. (2008) and Ko et al. (2009) argue that article choice in L2-acquisition by L2 English speakers reflects systemic access to universal semantic features such as definiteness, specificity, and partitivity. Their study focuses on L2-English learners whose native languages lack articles. Ko et al.`s (2009) claim that universal semantic features such as definiteness are at play when these L2-English learners acquire English articles is based on the assumption that speakers of article-less languages such as Korean are not influenced by L1-transfer with regard to article acquisition since article-less languages simply do not have articles. The present study, however, shows that the acquisition of the English definite article by speakers of article-less languages also involves L1-transfer effects, though in a different way from Spanish. This kind of L1-transfer can account for the non-random error patterns attested in L1-Korean L2-English speakers. Thus, the present study argues that the claim from the two previous studies (that adult L2 English speakers from article-less L1 languages can access universal semantic features such as definiteness) is neither fully supported nor convincing.

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