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Determining the complexity level of proceduralized tasks in a digitalized main control room using the TACOM measure

  • Inseok Jang;Jinkyun Park
    • Nuclear Engineering and Technology
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    • v.54 no.11
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    • pp.4170-4180
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    • 2022
  • The task complexity (TACOM) measure was previously developed to quantify the complexity of proceduralized tasks conducted by nuclear power plant operators. Following the development of the TACOM measure, its appropriateness has been validated by investigating the relationship between TACOM scores and three kinds of human performance data, namely response times, human error probabilities, and subjective workload scores. However, the information reflected in quantified TACOM scores is still insufficient to determine the levels of complexity of proceduralized tasks for human reliability analysis (HRA) applications. In this regard, the objective of this study is to suggest criteria for determining the levels of task complexity based on logistic regression between human error occurrences in digitalized main control rooms and TACOM scores. Analysis results confirmed that the likelihood of human error occurrence according to the TACOM score is secured. This result strongly implies that the TACOM measure can be used to identify the levels of task complexity, which could be applicable to various research domains including HRA.

Trends in research and development of Evacuation modelling at Korea and Overseas (국내외 Evacuation modelling 연구 및 개발의 연구 동향)

  • Gu, Ji Won;Oh, Ryun Seok;Choi, Jun Ho
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2022.04a
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    • pp.233-234
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    • 2022
  • In order to minimize casualties in case of a fire in a building, it is necessary to anticipate the time required for evacuation of occupants and the delay in evacuation in advance, and prepare countermeasures for possible occurrences. In fact, various factors that cannot be predicted exist and cannot be considered by excluding them, so the risk is predicted and evaluated through quantitative evacuation modeling. In order to understand this, we analyzed domestic and international evacuation modeling research trends. For about 40 years, starting with the characteristics of human movement, an evacuation modeling technique based on scientific methods has been developed through actual fire accident cases and various real-world experiments with humans. Then, in order to analyze the natural reaction of humans, which has a decisive influence in the recognition and decision-making phase, evacuation modelling studies have been conducted in depth using psychological and physical experimental methods.

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Quality characteristics and the process control of high-strength frictional bolt-sets (고장력 마찰접합 볼트세트의 품질특성에 관한 연구)

  • Son, S.Y.;Shin, K.H.
    • Journal of the Korean Society for Precision Engineering
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    • v.11 no.2
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    • pp.189-196
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    • 1994
  • Quality assurance in the process of manufacturing high strengh bolt sets used in the frictional joints of structures in one of important concern to users as well as to manufactures. In case of occurrences of either defective or low-quality products, even if they are quite rare, some systematic means of localizing the cause-characteristics and matching to corresponding production process is necessary. Control chart of torque factor is the primary indicatir in finding defectiveness of the products. Use of correlation diagrams ofnhardness of the bolt set presents in part a way of screening the cause. Retest data of the bolt set provide additional ideas of localizing the cause, for which theoretical background is presented in this regard. A process-characteristics matrix relating the causes of low quality to the corresponding process of manufacturing, which is of prime importance for the feedback control of production, is also proposed. Finally general features of control to assure quality of the set is described.

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A Comparison of the Constructions Make / Take a Decision in Malaysian English with the Supervarieties

  • Christina Sook Beng Ong
    • Asia Pacific Journal of Corpus Research
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    • v.4 no.1
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    • pp.43-59
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    • 2023
  • This study aims to compare the structures of light verb constructions (LVCs) taking decision as the deverbal noun in Malaysian English, British English and American English. A general corpus made up of Internet forum threads from Lowyat.Net, was created to represent Malaysian English while the British National Corpus (BNC) and Corpus of Contemporary American English (COCA) were used to represent the supervarieties. Light verbs make and take are found to be heading deverbal noun decision. Differences are observed in the use of articles. The frequency of Malaysian English LVCs without article is the highest while supervarieties LVCs prefer indefinite article. The high occurrences of LVCs without articles in Malaysian English can be attributed to the influence from Malaysian substrate languages. Findings also show that descriptive adjective is the most frequently used modifier in all three varieties of English. This suggests the standard LVC structure, comprising a light verb, the indefinite article, and a deverbal noun is no longer rigidly adhered to even among the native speakers of English.

韓國産 地下性 動物의 檢討와 目錄: I. 無脊椎動物(昆類 제외) 및 哺乳類

  • Lee, Byung-Hoon
    • The Korean Journal of Zoology
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    • v.21 no.3
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    • pp.103-125
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    • 1978
  • The present papers (I and UU) deal with the total records of Korean subterranean animals reported during the last forty years since its first one in 1938 through 1978. They have been published in 33 different articles by 29 authors from 7 different countries. They enlist 109 species in 53 families in 7 classes belonging to 3 different phyla collected from 45 caves and 9 wells around the country. Predominant are arthropods enumerating 101 species (92.7%), of which insects are represented by 37 species. The number of species reported exclusively from subterranean habitats, presumably troglobionts, amount to 60 (55%). Discussions regarding the systematic situation of each taxa in question are made and the rate of occurrences of totally subterranean animals is determined and compared by respective taxa in a few different geographic regions. Also checklists are prepared and given in systematic order, which are followed by general analysis. Some attempts are also made to give suggestions, hopefully, for the prograess and improvement of korean biospeleology. the present article, Part I, will be completed by Part II dealing with insects which sppears in the Korean Journal of Entomology Vol. 8, No. 2 of the 1978 edition.

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Frame Analysis of Newspaper's Coverage Related to Leisure of Older Adults (노인여가관련 신문보도의 프레임 분석)

  • Oh, Sae-Sook;Kim, Jong-Soon;Shin, Kyu-Lee
    • Journal of Wellness
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    • v.7 no.2
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    • pp.25-37
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    • 2012
  • The purpose of this study was to analyze the mass media's news framing on the elderly leisure. For this, researchers collected news articles from daily newspapers such as Chosun Ilbo, Hankyoreh, Kyunghyang Shinmun, and analysed the news framing of them through text-analytic approach. Total of 153 news the about elderly leisure between 1990 and 2010 were used for frame analysis. The Frame analyses were divided by formal frame and content frame. The formal frame was formed by deduction based on the classification method of Iyergar(1991) and the content frame was formed by induction according to the analysis of overall themes and titles of news. The main result could be summarized as follows: First, the analysis of formal frame showed that the episodic frame was predominantly high which focused on specific event or occurrences about elderly leisure. Second, it was found by content frame analysis that elderly leisure's facilities, health, serious leisure, policy frame were main subjects of news framing.

A Study on the Derivation of Key Management Works by Construction Progress through the Analysis of Construction Supervision Data (건설감리 검측데이터 분석을 통한 공사 진행도별 중점관리공종 도출)

  • Yoo, Na-yeong;Kim, Ha-neul;Kim, Ha-rim;Cho, Hun-Hee
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2022.11a
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    • pp.131-132
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    • 2022
  • The type and proportion of construction work varies depending on the stage of progress, and the frequency of inspection and defect occurrences are different. If it is determined to be defective after the inspection, a delay may occur, and additional manpower and resources are required. Therefore, it is necessary to prevent these risks by classifying, deriving, and managing key management woks according to the progress. This study aims to contribute to the efficiency of the supervisor's inspection work by identifying the types of construction that should be managed intensively for each construction progress and deriving the time when defects occur frequently in each construction type.

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Korean EFL Learners' Sensitivity to Stylistic Differences in Their Letter Writing

  • Lee, Haemoon;Park, Heesoo
    • Journal of English Language & Literature
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    • v.56 no.6
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    • pp.1163-1190
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    • 2010
  • Korean EFL learners' stylistic sensitivity was examined through the two types of letter writing, professional and personal. The base of comparison with the English native speakers' stylistic sensitivity was the linguistic style markers that were statistically found by Biber's (1988) multi-dimensional model of variation of English language. The main finding was that Korean university students were sensitive to stylistic difference in the correct direction, though their linguistic repertoire was limited to the easy and simple linguistic features. Also, the learners were skewed in the involved style in both types of the letters unlike the native speakers and it was interpreted as due to the general developmental direction from informal to formal linguistic style. Learners were also skewed in the explicit style in both types of letters unlike the native speakers and it was interpreted as due to the learners' heavy reliance on one particular linguistic feature. As a whole, the learners' stylistic sensitivity heavily relied on the small number of linguistic features that they have already acquired, which happen to be simple and basic linguistic features.

Revisiting Korean spider wasps(Hymenoptera: Pompilidae) recorded in Kim (1970)

  • Jeong-Kyu Kim
    • Journal of Species Research
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    • v.12 no.4
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    • pp.332-340
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    • 2023
  • Kim (1970) was an early, comprehensive foundation for the taxonomy of Korean spider wasps. All the species therein are reviewed, and an annotated checklist comprising 21 species is presented. Species names are corrected in terms of current taxonomy. Based on the re-examination of voucher specimens, five misidentifications are rectified, of which two species rectified as Priocnemis(Leptopriocnemis) cyphonota and P.(Umbripennis) pseudojaponica are new to Korea. Also, occurrences of two species (Anoplius eous and An. viaticus) in Korea, which was doubted by Lelej et al. (1994), are confirmed. On the other hand, exclusions of two species (Irenangelus perinx and Priocnemis mitakensis) from the Korean fauna are proposed. However, the need for further study on six species (Anoplius reflexus, An. infuscatus, Arachnospila eisukei or Ar. fumipennis eisukei, Auplopus obtusus, Priocnemis irritablis) historically mentioned for the Korean fauna is newly recognized. The current taxonomic status of those species is briefly discussed.

A Study on Optimizing User-Centered Disaster and Safety Information Application Service

  • Gaeun Kim;Byungjoo Park
    • International journal of advanced smart convergence
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    • v.12 no.4
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    • pp.35-43
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    • 2023
  • This paper emphasizes that information received in disaster situations can lead to disparities in the effectiveness of communication, potentially causing damage. As a result, there is a growing demand for disaster and safety information among citizens. A user-centered disaster and safety information application service is designed to address the rapid dissemination of disaster and safety-related information, bridge information gaps, and alleviate anxiety. Through the Open API (Open Application Programming Interface), we can obtain clear information about the weather, air quality, and guidelines for disaster-related actions. Using chatbots, we can provide users with information and support decision-making based on their queries and choices, utilizing cloud APIs, public data portal open APIs, and solution knowledge bases. Additionally, through Mashup techniques with the Google Maps API and Twitter API, we can extract various disaster-related information, such as the time and location of disaster occurrences, update this information in the disaster database, and share it with users.