• Title/Summary/Keyword: 형태재인

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Supporting Characteristics of a Spiral Bolt through Pull-out Test (인발시험을 통한 스파이럴 볼트의 지보특성)

  • Kim, Jang-Won;Kang, Choo-Won;Song, Ha-Lim
    • Explosives and Blasting
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    • v.29 no.1
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    • pp.10-16
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    • 2011
  • To make large slopes or rock structures stable, supporting systems, such as anchor bolt, rock bolt and spiral bolt which are developed recently, are commonly used. In this study, in-situ pull-out tests were carried out to compare the characteristics of rock bolt that is most widely used with ones of spiral bolt that is newly developed. Re-pull-out test for the spiral bolt in which loading and unloading cycles are repeated three times showed that the maximum pull-out load is almost constant irrespective of the number of loading cycles, which may be due to no failure between spiral bolt and filler. On the other hand, the maximum pull-out load for the conventional rock bolt decreases with the number of loading cycles due to the partial failure between rock bolt and filler.

Visual and Phonological Neighborhood Effects in Computational Visual Word Recognition Model (계산주의적 시각단어재인 모델에서의 시각이웃과 음운이웃 효과)

  • Lim, Heui-Seok;Park, Ki-Nam;Nam, Ki-Chun
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.8 no.4
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    • pp.803-809
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    • 2007
  • This study suggests a computational model to inquire the roles of phonological information and orthography information in the process of visual word recognition among the courses of language information processing, and the representation types of the mental lexicon. The model that this study is presenting here was designed as a feed forward network structure which is comprised of input layer which uses two Korean syllables as its input value, hidden layer, and output layer which express meanings. As the result of the study, the computational model showed the phonological and orthographic neighborhood effect among language phenomena which are shown in Korean word recognition, and showed proofs which implies that the mental lexicon is represented as phonological information in the process of Korean word recognition.

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The Effect of the Orthographic and Phonological Priming in Korean Visual Word Recognition (한국어 시각 단어재인과정에서 음운정보와 표기정보의 역할)

  • Tae, Jini;Lee, ChangHwan;Lee, Yoonhyoung
    • Korean Journal of Cognitive Science
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    • v.26 no.1
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    • pp.1-26
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    • 2015
  • The purpose of this study was to examine whether the phonological information or the orthographic information plays a major role in visual word recognition. To do so, we used a non-word lexical decision task(LDT) in Experiment 1 and masked priming tasks in Experiement 2 and 3. The results of Experiment 1 showed that reaction times and the error rates were affected by the orthographic characteristics of the non-word stimuli such that orthographically similar non-words condition showed prolonged reaction times and higher error rates than control condition. In Experiment 2 and Experiment 3, the participants performed masked priming lexical decision tasks in two SOA conditions(60ms, 150ms). The results of the both experiments showed that the orthographically identical first syllable priming facilitated lexical decision of the target words while both of the pseudo-homophone priming and the phonologically identical first syllable priming did not. The dual route hypothesis(Coltheart et al, 2001), assuming that orthographic information rather than phonological information is the major source for the visual word recognition processes, fits well with the results of the current study.

울산광역시 삼산동 매립장 침출수 정화를 위한 AquaMats(R)상에서 미생물의 분리 및 동정에 관한 연구

  • Lee, Jun-U;Kim, Jwa-Gwan
    • Proceedings of the Korean Environmental Sciences Society Conference
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    • 2006.05a
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    • pp.395-398
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    • 2006
  • 울산 삼산동 매립장 침출수의 수질정화 공정을 위해 새로운 여재인 AquaMate$^{(R)}$가 사용되었다. 본 실험에서는 AquaMat$^{(R)}$에 서식하고 있는 여러 미생물 중 우점종으로 여겨지는 3종의 미생물을 각각 분리하여 동정하였다. 이들 미생물은 그램 염색 결과 모두 간균 형태의 그램 음성으로 나타났으며, 각각 Agrobacterium radiobacter, Pseudomonas cepacia, Flavobacterium indologenes로 판명되었다. 이들,3종의 미생물은 모두 침출수에서는 잘 자라지 못하였으나 yeast extract같은 생장촉진물질의 존재 하에서는 침출수에서 빠른 생장속도를 보여주었다.

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Analysis of Characteristics for Irrigation Reservoir using SWAT Model (SWAT 모형을 이용한 농업용 저수지 관개특성 분석)

  • Kim, Dong-Ju;Park, Ki-Wook;Jo, Jin-Hoon
    • Proceedings of the Korea Water Resources Association Conference
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    • 2008.05a
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    • pp.810-817
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    • 2008
  • 본 연구에서는 SWAT 모형의 국내 적용을 위해 농업용저수지의 관개특성을 분석하기 위한 자료 구축과 적용성 분석을 실시하였다 SWAT 모형의 입력자료는 토지이용도, 토양도, 강우관측자료를 사용하였으며 HOMWRS의 입력자료는 토지이용도, 강우 자료로 유출량을 산정하였다. 본 연구는 소규모의 관개용 저수지와 논농사가 주로 행하여지는 전형적인 우리나라의 농촌용수지구인 이동저수지 상부유역인 농업소유역에 SWAT 모형을 적용하였다. 이 지구는 관개지구의 환원수량, 저수지의 여수로 방류량 및 용수 사용량 등에 따라 저수지의 유입하천 및 하류하천의 장기유출량에 복잡한 형태로 영향을 미치고 있다. 그러므로 이러한 복잡한 농업용 소유역에서의 장기유출량 해석 기술을 정립하고자 이동저수지 유역을 12개의 대표적인 소유역으로 분할하였으며 우선적으로 저수지의 영향이 있고 없느냐에 따라 4개의 소유역인 미산교, 묵방교, 덕성교, 재인교의 소유역을 선정하였고 이 지점에서 관측된 장기유출량 자료를 이용하여 일별, 월별 장기유출량추정을 실시하였다. 추정한 결과 저수지가 설치되어 있지 않은 미산교, 묵방교에서의 일별, 월별장기유출량은 실측치와 매우 가까운 값을 보였다. 그러나 상류지점에 저수지가 설치되어 있는 덕성교와 재인교에서의 장기유출량은 관측값과 유사한 경향을 보이고 있으나 실측값과 차이를 보이고 있었다. 그러므로 향후에 이루어질 연구는 저수지의 영향, 환원수량, 관개수량이 장기유출량에 미치는 영향에 대한 연구가 필요하다.

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BSC 수용에 관한 실증연구;기술수용모형을 중심으로

  • Gwon, O-Jun;O, Jae-In
    • 한국경영정보학회:학술대회논문집
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    • 2007.06a
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    • pp.751-757
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    • 2007
  • BSC(Balanced Scorecard: 균형성과표)는 1992년 기존의 성과관리접근법의 한계를 인식한 Kaplan & Norton(1992)에 의해서 발표된 후 새로운 성과관리시스템이자 다양한 혁신을 통해 경쟁력을 키우려는 많은 기업들로부터 각광 받고 있다. 특히 우리나라의 경우 변화와 혁신을 강조하는 참여정부의 출범 이후 공공분야의 BSC도입이 활발히 이루어지고 있으며 많은 공공부문 기관들이 도입을 추진하고 있다. 하지만 BSC관련 기존의 연구들은 대부분 조직의 성과에 미치는 영향을 살펴보거나 도입 프로세스에 관한 연구가 대부분이어서, BSC 수용에 있어 중요시 되는 요인들에 관한 실증연구는 부족한 실정이다. 정보시스템 형태로 구현되는 BSC를 보다 효율적으로 활용하기 위하여 BSC 수용요인에 대한 고찰이 필요하다. 본 연구의 목적은 정보시스템 형태로 구현된 BSC를 활용하는 사용자를 대상으로 실증분석을 통하여 수용에 영향을 미치는 요인을 확인하기 위한것이다. 구체적인 BSC 사용자들의 적극적인 활용을 장려하여 기업의 경영성과를 높일 수 있도록 BSC 수용에 영향을 미치는 요인들을 추출하고, TAM(Technology Acceptance Model)을 기본으로 영향정도를 파악하여 BSC를 이미 도입한 기업과 앞으로 도입하려는 기업들에게 사용자들의 보다 적극적인 활용을 장려할 수 있는 가이드라인을 제시하는데 있다.

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Effect of syllable complexity on the visual span of Korean Hangul reading and its relation to reading abilities (한글 글자 유형이 시각 폭과 읽기 능력에 미치는 영향)

  • Choi, Youngon;Kim, Tae Hoon
    • Korean Journal of Cognitive Science
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    • v.27 no.2
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    • pp.325-353
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    • 2016
  • The visual span refers to the number of letters that can be accurately recognized without moving one's eyes. The size of the visual span is affected by sensory factors such as perimetric complexity, crowding, and mislocation of letters. Korean Hangul utilizes rather unique alphabetic-syllabary writing system, quite different from English and Chinese writing systems. Due to this combinatorial nature of the script, the visual span for Hangul characters can also be affected by the letter type (e.g., CV vs CVCC). The present study examined the effect of syllable complexity on the visual span for Hangul by comparing letter recognition accuracy across four letter type conditions (C only, CV, CVC, and CVCC). We also aimed to determine the meaningful letter type(s) that is associated with differences in reading abilities in Korean. Using a trigram presentation method, we found that overall recognition accuracy declined as syllable complexity increased. However, the visual span for CVC type was greater than that for CV type, suggesting that the effect is not necessarily linear, and that there might be other factors affecting the visual span for these types of letters. C and CV type showed fairly strong positive correlations with reading comprehension, suggesting that these might be the meaningful units for measuring visual span in relating to reading abilities.

A Study of the Transition Process in Presidential Electronic Records Transfer and Improvement Measures : Focused on the Electronic Records of the 19th President Moon Jae-in's Administration (대통령 전자기록물의 이관방식 변천과 개선방안 연구 19대 문재인 정부 대통령 전자기록물을 중심으로 )

  • Yun, Jeonghun
    • The Korean Journal of Archival Studies
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    • no.75
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    • pp.41-89
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    • 2023
  • Since the enactment of the Act on the Management of Presidential Archives in 2007, the cases of electronic records transfer in the 16th President Roh Moo-hyun's administration have played the role of an advance guard in managing public records and served as a test bed for new electronic records management. When transferring the electronic records of the 19th President Moon Jae-in's administration, the electronic records transfer method of President Roh's administration was inherited, while several innovative attempts were made. For instance, the Presidential Archives have for the first time converted the electronic documents from institutions advising the President into a long-term preservation package and transferred them online. In addition, considering the characteristics of the data, the administrative information dataset of the Presidential record creation institutions was transferred to the SIARD standard. Furthermore, the Presidential Archives had websites transferred in the form of OVF as a pilot test and collected social media directly through the API. Thus this study investigated the transition process of the presidential electronic records transfers from the 16th President Roh Moo-hyun's administration to the 19th President Moon Jae-in's. In addition, major achievements and issues were analyzed centering on the transfer method by type of electronic records during President Moon Jae-in's administration, and future improvement plans were presented.

Investigating Cognitive Process and Brain Activation Study on the Rational/Emotional Advertising Appeals: Emphasis on fMRI Experiments (이성적 자극과 감성적 자극에 따른 인지처리 기능 및 재인효과 차이에 관한 연구: fMRI 분석을 중심으로)

  • Choi, Do Young;Lee, Kun Chang
    • Korean Journal of Cognitive Science
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    • v.27 no.1
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    • pp.61-99
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    • 2016
  • This research investigated that participants' response time and recognition in the decision-making situation would vary according to either rational or emotional stimuli and analyzed how brain functions are related to each type of stimuli by means of fMRI. We tried to address the difference of cognitive processing between rational stimuli and emotional stimuli in the perspective of information processing theory. In order to achieve the research purpose above, we conducted two kinds of experiment studies. In study 1, subjects conducted decision-making task which selected which kind of information type the stimuli was after stimuli - rational stimuli or emotional stimuli - was randomly seen during experiment. During this experiment, we investigated the effect of each stimuli by measuring the duration from the onset time at which stimuli was shown to the response time at which subjects conducted decision-making. Furthermore, we compared the brain functions by finding out what kinds of brain areas were activated during the decision-making task. In study 2, subjects conducted recognition task at which subjects made a decision whether the stimuli was sees in the previous experiment or not. During the second experiment, we investigated the recognition effect by measuring the memory for each stimuli type. Moreover, we compared the cognitive processes during recognition by analyzing the differences of brain area functions. The results of two experiments above were as following. Firstly, regarding the response time as the effect of stimuli, we found that the effect of emotional stimuli was higher than that of rational stimuli. And regarding the recognition as the effect of stimuli, it was found that the effect of rational stimuli was higher than that of emotional stimuli. Secondly, the explanation about the characteristics of cognitive processes with the result of behavioral response by analyzing brain functions was as following. First of all, regarding the decision-making task which conducted for analyzing the effect of response time, the relatively high activated brain areas of rational stimuli were related with the functions of movement control or working memory, and the relatively high activated brain areas of emotional stimuli were connected with the functions of lingual processing.

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How is the inner contour of objects encoded in visual working memory: evidence from holes (물체 내부 윤곽선의 시각 작업기억 표상: 구멍이 있는 물체를 중심으로)

  • Kim, Sung-Ho
    • Korean Journal of Cognitive Science
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    • v.27 no.3
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    • pp.355-376
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    • 2016
  • We used holes defined by color similarity (Experiment 1) and binocular disparity (Experiment 2) to study how the inner contour of an object (i.e., boundary of a hole in it) is encoded in visual working memory. Many studies in VWM have shown that an object's boundary properties can be integrated with its surface properties via their shared spatial location, yielding an object-based encoding benefit. However, encoding of the hole contours has rarely been tested. We presented objects (squares or circles) containing a bar under a change detection paradigm, and relevant features to be remembered were the color of objects and the orientation of bars (or holes). If the contour of a hole belongs to the surrounding object rather than to the hole itself, the object-based feature binding hypothesis predicts that the shape of it can be integrated with color of an outer object, via their shared spatial location. Thus, in the hole display, change detection performance was expected to better than in the conjunction display where orientation and color features to be remembered were assigned to different parts of a conjunction object, and comparable to that in a single bar display where both orientation and color were assigned into a single bar. However, the results revealed that performance in the hole display did not differ from that in the conjunction display. This suggests that the shape of holes is not automatically encoded together with the surface properties of the outer object via object-based feature binding, but encoded independently from the surrounding object.