This study examined subject-auxiliary inversion errors in wh-questions produced by 88 Korean EFL elementary learners, focusing on whether types of wh-words and auxiliaries could affect inversion acquisition and whether explicit instruction on movement rules could facilitate this process. Guided writing tasks were used as a pretest and a posttest to analyze influence of wh-words and auxiliaries on learners’ inversion in the pretest and effects of instruction on movement rules in the posttest. Results showed that both whwords and auxiliaries significantly influenced learners’ inversion acquisition. Learners struggled more with why-questions than with what-questions, which were selected as representatives of adjunct and argument wh-questions, respectively. More inversion errors occurred in wh-questions requiring do-support than in those involving auxiliary be or modal will, although no significant difference was found between be and will. Experimental lessons with brief explicit instruction on auxiliary movement during regular classes significantly improved learners’ inversion accuracy, particularly in dosupport questions, which posed the greatest challenge in the pretest.

In this paper, This study examines the acquisition patterns of Chinese advanced Korean learners before and after comprehensive output is applied in the acquisition of adnominal suffix, The aim of this study is like to verify whether it functions as a “'perceptive”'among the important roles in second-language acquisition. The main research question sad dressed are as follows: 1. What is the acquisition pattern of '-(으)ㄴ' and '-던' be fore and after applying the compressible output? 2. What is the cognitive processing patterns of '-(으)ㄴ' and '-던' of learners before and after the compressible output is applied? 3. (Hypothesis verification)The compressible output functions to recognize the target grammar item. Pre- and post-SPRT and WGJT are conducted to solve Research Problems 1 and 2, and to solve Research Problem 3, interview contents with participants and reconstructed contents are analyzed. The results in dicate that for the first research question, the response rate of learners to the tubular ending '-(으)ㄴ' question increased the post-correct answer rate, and resulted in more effective acquisition compared with before the output is applied. Meanwhile, the learner's response rate to “'-던”'improved slightly. However, ]no significant difference is indicated between the before and after cases;,therefore, one may not conclude that the acquisition of '-던' after the output is more effective. Regarding the cognitive processing patterns '-(으)ㄴ' and '-던', the main effect of the '-(으)ㄴ' sub-item type(F=3.14, P= .045) and the main effect before and after the output is applied(F=28.54, P= .000) are significant. However, the item type and the interaction before and after the output is applied(F=0.39, P= .75) cannot be confirmed as significant. In other words, both the pre- and post-learners ex hi bit different sensitivities depending on the type of question. However, one may not firmly conclude that the pattern of varying sensitivities differs before and after the output is applied. Regarding the question pertaining to '-던' one may not conclude that the main effect of the item type(F=1.11, P= .37), the main effect before and after the output is applied(F=1.65, P=.37), and the interaction between the item type and the pre-and post-output(F=1.71, P= .14) are all significant. In other words, one may not conclude the sensitivity of '-던' varies bypre-/ post-output and the item type. Interviews and reconstructions with participants are analyzed to verify the "getting to know" hypothesis among the important roles posed in the third research question. The result shows that,, in acquiring a second language, the understandable output clearly recognizes the gap between what one wishes to express and what one can use accurately through communication, corrects errors from the other person’'s feedback, or activates the knowledge one learned to promote the level of accurate use from avoidance for the part one wishes to express when correcting errors.

In the evolving global food industry, international certifications have become essential for seafood export companies to ensure product safety, quality, and sustainability, as well as to meet consumer demands and regulatory standards. This study analyzes the decision-making factors influencing the acquisition and maintenance of international certifications among Korean seafood export companies, using decision tree analysis. The research surveyed 134 seafood export companies, focusing on six key factors: corporate characteristics, environmental factors, input factors, organizational structure, company capabilities, and external relationships. The decision tree analysis revealed that among corporate characteristics, the size of sales revenue, number of employees, and proportion of exports were found to play significant roles. For environmental factors, specific demands from overseas buyers, shifting consumer preferences, and compliance with global standards were identified as having a major impact. Regarding input factors, certification costs, validity periods, and investments in processing facilities were revealed to be critical variables. Organizational factors such as managerial support and dedicated personnel, capability factors like inter-departmental collaboration and processing system capacity, and relationship factors including partnerships with certification and export support agencies were also critical in the certification process. This study identified various factors influencing the decision-making process for acquiring and maintaining international certifications among Korean seafood export companies and analyzed the importance of detailed variables for the first time. Additionally, it provides practical and policy-oriented implications to promote the adoption of international certifications as part of efforts to enhance the global competitiveness of Korean seafood. Furthermore, this study contributes to the academic understanding of the decision-making process related to international certifications in seafood export companies.

급성 뇌경색 진단에는 환자에 따라 관류강조영상과 조영증강 자기공명혈관영상이 동시에 촬영되는 경우가 있으며, 이 과정에서 MRI 조영제인 가돌리늄의 T1 단축 효과가 발생하여 동맥과 정맥의 신호 겹침이 빈번히 발생한다. 특 히, 3D T1 경사에코 기법을 사용한 CE-MRA에서 첫 번째 조영제 주입(PWI) 후 연속적으로 발생하는 T1 감소 효과로 인해 혈관의 정확한 묘사에 한계가 있었다. 본 연구에서는 이러한 문제를 해결하기 위해 마스크 영상의 획득 시점을 조정하여 새로운 방법(B)을 제안하였다. 기존 방법(A)에서는 관류강조영상 이전에 마스크 영상을 획득했지 만, 새로운 방법(B)에서는 관류강조영상 이후 마스크 영상을 획득하여 동맥과 정맥 신호 겹침을 효과적으로 줄였다. 연구 결과, S상 정맥동과 내경정맥에서 새로운 방법이 기존 방법보다 유의미하게 낮은 대조대잡음비를 보였으며, 신호 겹침이 줄어들어 정맥 신호의 억제 효과가 극대화되었다(p<0.05). 본 연구의 새로운 방법은 기술적으로 추가적 인 복잡성 없이 효율적으로 정맥 신호를 제거하여 CE-MRA 영상의 진단적 정확성을 향상하는 유용한 기법으로 평 가된다. 향후 연구에서는 더 다양한 환자군을 대상으로 본 방법의 유용성을 검증하고, 최적의 방안 모색을 할 필요가 있다.

Hydraulic turbines can convert tidal current energy into electric energy, and the addition of a deflector cover to the turbine can improve the efficiency of the turbine's energy harvesting. The angle of the inlet section and the angle of the outlet section of the deflector will further affect the final energy-acquisition efficiency.A threedimensional numerical model for turbine flow field analysis is established, and the RNG k-ε turbulence model is selected by CFD method, and the best angles of inlet section and outlet section are analysed by the method of sliding mesh to obtain the best angle of inlet section and outlet section separately, and then three groups of angles are selected near the best angle of inlet section and outlet section to make orthogonal comparisons. The energy acquisition efficiency of the turbine is calculated at different angles of the inlet and outlet sections of the deflector, and the turbine streamline distribution, velocity and pressure maps are analysed with and without the deflector.The study shows that the deflector can play the role of convergence of the downstream flow, which can improve the efficiency of the turbine energy acquisition, and the maximum energy acquisition efficiency is at the inlet angle of 29° and the outlet angle of 40 °, and the maximum energy acquisition efficiency can be improved by about 32 percent.

본 연구는 신HSK 1·2급에 나온 문법등급과 기출문제와의 연관성을 알아보고, 독 해에 꼭 필요한 술어 부분을 구성하는 품사와 문장성분 등을 대상으로 출현빈도를 조사하여, 효과적인 HSK 대비 회화교재를 편성하는데 그 목적이 있다. K대학 항공 서비스학과 학습자들을 대상으로 회화교재를 기반으로 한 수업에 대한 설문을 진행 하였는데, 학습자들이 ‘단어의 양’에 부담을 느낀다는 것을 알게 되었다. 단어의 양을 줄이고, 학습의 우선순위를 찾기 위해서 신HSK 1·2급에 나온 문법등급과 기출문제 와의 연관성을 대조한다. 그리고 문법포인트의 범위와 출현 빈도, 필수단어의 출현 빈도 등을 제시하여, 신HSK 2급 시험을 대비한 교재 편성에 도움이 되고자 한다.

The small brown planthopper (SBPH), Laodelphax striatellus, is a major insect pest for the rice plants. SBPH is also a known vector of rice stripe virus (RSV), which causes severe yield losses in rice crops throughout the East Asia. RSV is persistently transmitted by SBPH and can also be transmitted to offspring through transovarial transmission. SBPH is known to migrate from China to the west coast of the Republic of Korea (ROK). The study investigated the impact of temperature on the acquisition and transmission of RSV by SBPH in ROK, which is expected to experience increased migration and emergence of SBPH due to climate change. The results revealed that the acquisition and transmission rates of RSV were higher at 27°C compared to 24°C, with rates of 100% and 78.3%, respectively. However, at 30°C, the acquisition and transmission rates of RSV was decreased. The results suggests that temperature can impact the transmission of RSV by SBPH. To investigate this further, SBPH adults were fed on RSV-infected plants and infection rates were compared across various tissues, including the head, salivary glands, midgut, Malpighian tubules, ovary, and hindgut. Results showed that at 36 hours post-infection, RSV was highly detected in the Malpighian tubules, ovary, and hindgut. At 48 hours post-infection, RSV was also detected in the thorax. These results suggest that the transmission rates of RSV in SBPH increase with temperature between 24-27°C, but decrease at 30°C, indicating that the vectorial capacity of SBPH for RSV decreases above a certain threshold.

본 연구는 방사형 K-공간 획득 기법 중 하나인 JET 기법을 적용하여 어깨관절 자기공명영상 검사에서의 움직임 인공물과 노이즈를 감소 효과를 평가하였다. 2023년 2월 1일부터 3월 31일까지 어깨관절 자기공명영상 검사를 받 은 35명을 대상으로 선정하여 후향적으로 분석하였다. 평가는 JET 기법 적용 여부에 따라 신호 대 노이즈 비, 평균 대 표준편차 비, 움직임 인공물 발생 여부에 대한 영상 평가를 수행하였다. JET 기법을 적용한 그룹에서는 신호 대 노이즈 비, 평균 대 표준편차 비, 움직임 인공물 발생 여부에 대한 영상 평가 값이 통계적으로 유의하게 높게 나타났다(p<0.05). 본 연구를 통해 어깨관절 자기공명영상 검사 시 JET 기법의 도입은 움직임 인공물의 감소뿐만 아니라 신호 대 노이즈 비와 평균 대 표준편차 비가 향상된 영상을 얻을 수 있음을 확인하였다. 이러한 결과는 JET 기법이 어깨관절 영상 취득에 유용하게 활용될 수 있을 것으로 판단되며, 더 나아가 다양한 부위에 적용되는데 있어 서도 기여할 수 있을것으로 예상된다.

In this research, a new Test and Evaluation (T&E) procedure for defense AI systems is proposed to fill the existing gap in established methodologies. This proposed concept incorporates a data-based performance evaluation, allowing for independent assessment of AI model efficacy. It then follows with an on-site T&E using the actual AI system. The performance evaluation approach adopts the project promotion framework from the defense acquisition system, outlining 10 steps for R&D projects and 9 steps for procurement projects. This procedure was crafted after examining AI system testing standards and guidelines from both domestic and international civilian sectors. The validity of each step in the procedure was confirmed using real-world data. This study's findings aim to offer insightful guidance in defense T&E, particularly in developing robust T&E procedures for defense AI systems.

이 연구는 해외의 복수국적 제도를 살펴보고 한국의 제도와 비교해 보 며, 한국의 복수국적제도의 방향을 제시하고자 하였다. 지난 20년 사이, 전 세계에서 복수국적의 취득이 점점 더 많이 허용되고 있음에도 불구하 고 한국은 여전히 다중국적 취득을 부정적으로 생각한다. 이는 하나의 국적을 가진 일반인들에게 상실감과 역차별 논의를 제공할 수 있기 때문 이다. 그러나 이제 전통적인 국가의 개념이 약화된 만큼, 편리한 삶을 위 해 다국적 제도의 선택적 기능을 활용할 필요가 있다. 복수국적 취득 제 한은 정체성의 형성 과정 및 표현과 생활 영역 선택 등을 제한하여 물리 적인 거주·이전의 자유와 행복추구권에 대한 제한이 되며, 국적 보유의 자유에 대한 제한이 된다. 재외동포단체들은 국내 체류 동포를 국적으로 구분하지 말고 한국 사회의 주요 구성원으로 수용해 주기를 희망하였다. 이에 본 연구자는 현재 허용되고 있는 복수국적자의 연령을 하향하여 경 제활동 인구 증가 등 국가에 이익이 되는 정책을 제안하였다. 또한 설문 을 통해 차세대의 국민됨의 인식이 ‘국적’ 자체보다는 사회·정서적 교감 을 더 중요시한다는 것을 알 수 있었다. 이 결과는 미래세대의 인식 변 화에 맞게 국적 제도도 변화가 필요하다는 것을 의미하는 것이다.

Silicon (Si) has the potential to improve plant growth and stress tolerance. The study aimed to explore Si-involving plant responses and molecular characterization of different Si-responsive genes in alfalfa. In this study, the exogenous supplementation of Si enhanced plant growth, and biomass yield. Si-acquisition in alfalfa root and shoot was higher in Si-supplemented compared to silicon deficient (-Si) plants, implying Si-acquisition has beneficial on alfalfa plants. As a consequence, the quantum efficiency of photosystem II (Fv/Fm) was significantly increased in silicon-sufficient (+Si) plants. The quantitative gene expression analysis exhibited a significant upregulation of the Lsi1, Lsi2, Lsi3, NIP5;1, and NIP6;1 genes in alfalfa roots, while BOR1, BOR4, NIP2, and NIP3 showed no significant variation in their expression. The MEME results further noticed the association of four motifs related to the major intrinsic protein (MIP). The interaction analysis revealed that NIP5;1 and Lsi1 showed a shared gene network with NIP2, BOR1, and BOR4, and Lsi2, Lsi3 and NIP3-1, respectively. These results suggest that members of the major intrinsic proteins (MIPs) family especially Lsi1, Lsi2, Lsi3, NIP5;1, and NIP6;1 genes helped to pass water and other neutral solutes through the cell membrane and those played significant roles in Si uptake and transport in plants. Together, these insights might be useful for alfalfa breeding and genome editing approaches for alfalfa improvement.

This study investigates how native Korean speakers, who moved from Kyungsang province to Seoul, acquire /w/ retainment in Seoul Korean (SK). The specific objective is to examine how mobile speakers adopt the SK-like /w/ retainment and evaluate how linguistic and non-linguistic factors influence this acquisition. Furthermore, the study aims to establish whether having explicit awareness of the SK-like /w/ retainment is a prerequisite for acquiring it. The overall results suggest that most speakers have successfully adopted the SK-like /w/ retention, but there is noticeable diversity among speakers in terms of the extent to which they retain /w/. This variability can be linked to linguistic and non-linguistic factors, such as where /w/ appears in speech and individual attitudes towards SK. This research sheds light on the acquisition of /w/ retainment among native Korean speakers who have relocated from Kyungsang province to Seoul, highlighting the impact of linguistic and non-linguistic factors. It underscores the role of explicit awareness and reveals significant interspeaker variation in the adoption of SK-like /w/ retainment, contributing to our understanding of dialect acquisition dynamics.

This article conducts a multidimensional quantitative data analysis of writing scores and related variables such as word frequency, stroke number, and the number of components in the corpus of Chinese character acquisition of primary Chinese learners from non-Chinese culture circles, and then analyzes the cognitive characteristics and rules of Chinese character acquisition reflected in the data from the perspective of cognitive psychology. Data analysis shows that there are “stroke number effect” and “component number effect” when learners write Chinese characters, and the influence of the stroke number and component number on writing depends on the level of Chinese characters in the whole book frequency, and the dividing line is about 200. From the perspective of cognitive rule, frequency, stroke number and component number affect the whole process of perception, memory and extraction of Chinese characters. There are differences in the recognition methods of Chinese characters with different frequencies when writing. Learners use compressed and holistic recognition for high-frequency words (frequency>200), while partial and feature recognition for medium and low-frequency words (frequency≤200), and the basic units of feature recognition are strokes and components.The score of wrongly used characters is not significantly correlated with frequency, strokes and components, and the cognitive rules reflected by wrongly used characters need further study.

This study investigated the effects of processing three types of texts, namely expository texts, narrative texts, and a combination of both known as twin texts, on incidental vocabulary acquisition and retention in L2 learners. College freshmen (N = 109), who were lower to upper intermediate learners of English, were assigned into a control group and three experimental groups representing different reading conditions. Over a period of seven weeks, the experimental groups engaged in two reading sessions to read their assigned texts accompanied by output tasks and input enhancement. The participants’ receptive and productive vocabulary gains were measured with an immediate posttest and a delayed posttest to assess retention. Results revealed significant impacts of text genres on L2 incidental vocabulary learning and retention. Processing twin texts and expository texts yielded significantly greater vocabulary gains than processing narrative texts alone. These effects might be due to different processing mechanisms required for texts structured in distinct ways. Expository texts are informative and explanatory in nature, providing explicit and contextually rich information for word comprehension and retention.

국내의 공공공사는 국가･지방자치단체･정부 기관이 건축주가 되어 시행하거 나 지방자치단체의 보조로 시행하는 공공 토목건축 공사를 말한다. 이러한 공 공공사는 ｢국가를 당사자로 하는 계약에 관한 법률｣로써 계약에 관한 기본적 인 사항을 정하여 원활한 계약업무를 수행할 수 있도록 하고 있다. 한편 공공 공사 수행을 위해서는 용지가 필요한 바 ｢공익사업을 위한 토지 등의 취득 및 보상에 관한 법률｣에 공사용지 확보는 사업시행자가 하도록 명시하고 있고, 공 사계약일반조건에서도 공사용지 확보와 관련하여 발주기관은 계약상대자가 공사의 수행에 필요로 하는 날까지 공사용지를 확보하여 계약상대자에게 인도 하도록 규정하고 있다 그러나 실제 고속도로 공사현장에서는 공사용지 확보가 공사수행을 위해 필요 한 날까지 제대로 이루어지지 않는 경우가 많아 준공기한 준수를 위해 돌관공 사가 빈번하게 이루어지는 등 현실적인 어려움이 자주 발생하고 있다. 따라서, 본고에서는 관계법령 및 공사계약일반조건에서 규정한 공사용지 확보 관련규정에 대한 문제점을 제시하고 이에 대한 개선안을 제시함으로써 향후 공공공사를 시행함에 있어 공사용지 확보와 관련하여 발주기관 및 계약상대자 가 겪는 어려움을 해소하는데 일조하고자 한다.