이 연구는 미얀마인 한국어 학습자의 한국어 사용 오류 양상을 살펴서 미얀마인 한국어 학습자들에게 좀 더 효율적으로 한국어교육을 할 수 있 는 방안에 대해 제언하는 것을 논의의 목적으로 하였다. 이 연구의 목적 을 달성하기 위해 미얀마인 외국인 유학생들 63명의 작문 과제를 음소, 문법, 어휘 등의 측면에서 분석하였다. 그 결과 음소 관련 오류에서는 파 찰음, 평음과 경음의 대치 오류가 많았으며, 'ㅓ'와 'ㅏ', 'ㅐ'와 'ㅏ', 'ㅐ' 와 'ㅔ'의 대치 오류도 많이 나타났다. 문법 관련 오류에서는 연결어미 ‘-고’와 ‘-아서/어서’의 대치 오류가 가장 많았으며, 어휘 관련 오류에서 는 어휘 의미 혼동, 미얀마어의 영향에 따른 의미 과잉 적용 등의 오류 가 많이 나타났다. 이 연구과 같은 한국어와 미얀마어의 대조 분석 관점 에서의 오류 연구가 계속 된다면 미얀마 한국어 학습자의 한국어교육에 유의미한 기여를 할 수 있을 것이다.

In the modern society, the sports industry is becoming an important industry that plays an important role in cultural exchange and economic development between countries. Along with this, the size of sports equipment manufacturers is also increasing, and especially in the archery field, domestic companies occupy a high share in the global market. However, in the case of precision accessories, foreign products are imported and used. Among the precision archery accessories, the cushion plunger is subjected to repetitive loads, and the surface damage due to wear affects the accuracy of the archery, so fatigue and wear analysis taking this into account are required. In this paper, a friction simulation was performed to calculate the fatigue life and wear amount of the cushion plunger among the precision archery accessories, and the validity of the analysis model was evaluated by comparing the friction test results.

이 연구는 국내 체류 외국인 유학생들의 성공적인 학업 적응 방안에 대해 제언하기 위해 충남 J대학 유학생 230명을 대상으로 학업, 대학생 활, 학업 적응 관련 요구 등에 대한 설문조사를 하였다. 외국인 유학생들 은 한국 기업에 취업하기 위해 한국의 대학에서 유학 생활을 하고 있는 데, 학업 과정에서 언어와 문화 적응에 어려움을 겪고 있으며, 이러한 어 려움은 주로 동일 언어권 유학생들 간 의지를 통해 해결하고 있는 것으 로 나타났다. 또한 수강 신청 과목 선택, 기숙사와 같은 거주 환경에서 다른 문화권 학생과의 생활, 취업 및 단기 아르바이트 정보 획득 등에서 어려움을 겪고 있었다. 유학생들의 학업 적응에서 가장 필요한 것은 튜 터링, 멘토-멘티, 한국어능력을 위한 한국어수업 등과 같은 한국어 능력 향상 프로그램이었다. 유학생들의 성공적인 대학생활과 학업 적응을 위 해서는 대학뿐만 아니라 지역사회도 많은 관심을 가져야 한다. 또한 유 학생들을 지역특화인재로 육성하는 시스템을 구축하고 특화된 교육콘텐 츠를 제공해서 보다 안정적으로 대학생활과 학업에 집중할 수 있도록 해 야 한다.

In the case of a rear-wheel drive vehicle, a propeller shaft is installed to transmit the driving force of the engine. At this time, the propeller shaft is divided into 2 or 3 pipes, and the bearing is mounted on the vehicle body. And the end of the propeller shaft is connected to the rear differential and connected to the body through the chassis. Due to this complex structure, the propeller shaft must be highly balanced and the mounting angle must be well maintained. However, depending on the driving conditions of the car, various noise and vibration problems occur due to the aging of the parts and the propeller shaft. Hyundai Motor Company's maintenance center uses 'Noise Observer' to resolve various noise and vibration customer complaints. This paper describes the mechanism of vibration problems caused by unbalance of the propeller shaft and the diagnosis process using a 'Noise Observer'.

Microplastics and nanoplastics (NMPs) are considered one of hazardous contaminants in marine ecosystems due to their toxic effects, such as reproduction disorder and oxidative stress, on marine organisms. Although water temperature is rising due to global climate change, little information on the toxicological interaction between NMPs and temperature is available. Therefore, in this study, we confirmed the toxicity of NMPs (polystyrene [PS] beads; 0.05- and 6-μm) on brackish water fleas (Diaphanosoma celebensis) depending on increased temperature (30°C and 35°C) at individual and molecular levels. In the chronic toxicity test, the group exposed to high temperatures showed an earlier first reproduction time compared to the normal temperatures group, but it was delayed by co-exposure to NMPs at 35°C. Notably, the total reproduction decreased significantly only after 0.05-μm PS beads exposure at 30°C. Interaction analysis showed that first reproduction time, modulation of the antioxidantrelated gene (GSTS1), heat shock gene (Hsp70), and ecdysteroid pathway-related genes (EcR_A, EcR_B, and CYP314A1) were closely related to temperature and PS beads size. These results indicate that microplastics have size-dependent toxicity, and their toxicity can be enhanced at high temperatures. In addition, higher temperatures and PS beads exposure may have negative effects on reproduction. This study suggests that various factors such as water temperature should be considered when evaluating the toxicity of microplastics in marine ecosystems, and provides an understanding of the complex toxic interaction between water temperature and microplastics for marine zooplankton.

To identify some significant phenotypic characteristics of maize(zea mays) seeds, we have obtained Red, Green, Blue(RGB) digital image data from 82 recombinant inbred lines. Based on the collected image data, their morphological and color data were analyzed, and seven significant parameters were selected, including area, perimeter, length, width, circularity, roundness, and surface texture. The extracted RGB data were converted into color hex codes to visualize the representative colors of the seeds. These visualized colors were categorized into six groups: gray, yellowish white, yellow, grayish orange, purple, and brown. The results of maize seed phenotypic analysis using the RGB digital images in this study will serve as a useful tool for constructing a database of seed phenotyping database and establishing a standardized classification system.

Taguchi method is one of the most popular approaches for design optimization such that performance characteristics become robust to uncontrollable noise variables. However, most previous Taguchi method applications have addressed a single-characteristic problem. Problems with multiple characteristics are more common in practice. The multi-criteria decision making(MCDM) problem is to select the optimal one among multiple alternatives by integrating a number of criteria that may conflict with each other. Representative MCDM methods include TOPSIS(Technique for Order of Preference by Similarity to Ideal Solution), GRA(Grey Relational Analysis), PCA(Principal Component Analysis), fuzzy logic system, and so on. Therefore, numerous approaches have been conducted to deal with the multi-characteristic design problem by combining original Taguchi method and MCDM methods. In the MCDM problem, multiple criteria generally have different measurement units, which means that there may be a large difference in the physical value of the criteria and ultimately makes it difficult to integrate the measurements for the criteria. Therefore, the normalization technique is usually utilized to convert different units of criteria into one identical unit. There are four normalization techniques commonly used in MCDM problems, including vector normalization, linear scale transformation( max-min, max, or sum). However, the normalization techniques have several shortcomings and do not adequately incorporate the practical matters. For example, if certain alternative has maximum value of data for certain criterion, this alternative is considered as the solution in original process. However, if the maximum value of data does not satisfy the required degree of fulfillment of designer or customer, the alternative may not be considered as the solution. To solve this problem, this paper employs the desirability function that has been proposed in our previous research. The desirability function uses upper limit and lower limit in normalization process. The threshold points for establishing upper or lower limits let us know what degree of fulfillment of designer or customer is. This paper proposes a new design optimization technique for multi-characteristic design problem by integrating the Taguchi method and our desirability functions. Finally, the proposed technique is able to obtain the optimal solution that is robust to multi-characteristic performances.

벤조다이옥산 기능기를 갖는 새로운 이온성 폴리아세틸렌 유도체를 2-브로모메틸-1,4-벤조디옥산을 이용한 2-에티닐피리딘의 4차염화 중합법으로 합성하였다. 2-브로모메틸-1,4-벤조디옥산에 의한 2-에티닐피리딘의 4차염화 반응에 의해 먼저 생성된 단량체인 에티닐피리디늄 염은 별도의 촉매나 개시제 없이도 중합반응이 잘 진행되어 70% 수율로 원하는 이온성 폴리아세틸렌 유도체를 합성할 수 있었다. 여러 가지 분석장비를 이용하여 고분자 구 조를 분석한 결과 합성 고분자는 벤조디옥산 피리디늄 부분을 갖는 공액구조 고분자임을 확인할 수 있었다. 합성 공액구조 고분자는 메탄올, DMF, DMSO, NMP 등과 같은 극성 유기 용매에 잘 용해하었다. 이 고분자는 이온성 피리디늄 부분을 갖고 있는 특성으로, 공기 중에서 상대적으로 더 많은 흡습 특성을 보였다. 합성한 고분자의 전기 -광학적 및 전기화학적 특성을 측정하고 분석하였다. 비가역적 전기화학적 거동이 산화 피크와 환원 피크 사이에서 관찰되었다. 본 고분자는 피리디늄 치환기를 갖는 다른 폴리아세틸렌 유도체와 비슷하게 50 사이클까지 안정적인 산화환원 거동과 1.0V에서의 안정한 산화전류값을 나타내었다.

막대한 예산이 투입되는 국가연구를 기획·관리·확산하는 연구관리 담당자들은 매우 중요한 인력이나, 역할에 관한 연구는 부족한 실정이다. 본 연구는 연구관리 전문기관 담당자에게 필요한 역량요소를 도출하고 역량의 중요도를 확인하고자 하였다. 이를 위해 4가 지 주요요인과 16개의 하위요인을 도출하였고, AHP 기법을 기반으로 설문조사(연구관리 담 당자와 연구자 90명 대상)를 추진하여 우선순위를 도출하였다. 전체 응답자 기준으로 역량의 중요도는 협력적 태도, 소통능력, 연구지식, 목표관리능력과 신의성실 순으로 확인되었으나, 담당자의 경우, 업무와 관련한 역량(규정지식, 판단능력, 정책지식)이 중요하다고 보는 반면, 연구자들의 경우 자신들을 보다 더 지원해 줄 수 있는 역량(협력적 태도, 소통능력)을 보다 더 중시하는 시각차를 볼 수 있었다. 이번 연구는 전문기관 연구관리 담당자의 채용과 역량 개발에 활용할 수 있을 것으로 사료된다.

In recent years, the government has strongly promoted multi-purpose utilization of paddy field. However, poor drainage causes waterlogging stress in upland crops, requiring subsurface drainage technology, resulting in high installation and management costs. To address this issue, a low-cost and high-efficiency technique was developed that utilizes wasted coir substrates which have characteristics of high porosity and good drainage, for upland crop cultivation in paddy fields. Soybeans were grown in both paddy soil and wasted coir slab with two planting densities (80×20 cm and 60×20 cm). The results showed that the coir substrates had better performance than the paddy soil in terms of soil physical and chemical properties and the growth and yield of upland crops are improved. The treatments using wasted coir substrate showed a 41.4% increase in yield and a 21.3% increase in protein content compared to PS treatment. Our findings demonstrate that recycling waste coir substrates to grow upland crops is a positive cultivation strategy to solve some drainage problems in paddy fields. This approach offers a sustainable solution for upland crop production while also addressing the issue of waste management in agriculture.

This study aimed to investigate the growth and phenol content changes of basil (Ocimum basilicum L.) under five different light intensities and photoperiods, maintaining the same Daily Light Integral (DLI) conditions in a plant factory. Basil seeds were sown on a rockwool medium for four weeks and then transplanted. To maintain a DLI 17mol·m-2·d-1, light intensity and photoperiod were set at 16h-295, 18h-260, 20h-235, 22h-215, and 24h-200μ mol·m-2·s-1 and cultivated for four weeks. The harvested results showed that basil plant height, number of lateral branches, and leaf number tended to decrease from the 16h-295 treatment to the 24h-200 treatment. Shoot fresh weight, dry weight, leaf area, leaf width, and leaf length were significantly higher in the 18 h-260 treatment. The total phenolic contents in the 18h-260 treatment was significantly higher by 51.3%, 172.7%, 111%, and 119.7% compared to the 16h-295, 20h-235, 22h-215, and 24h-200 treatments, respectively. Therefore, it is anticipated that cultivating basil under the condition of 18h-260 treatment could yield enhanced growth quality and an increase in total phenolic contents.

Rapid and accurate detection of pathogenic bacteria is crucial for various applications, including public health and food safety. However, existing bacteria detection techniques have several drawbacks as they are inconvenient and require time-consuming procedures and complex machinery. Recently, the precision and versatility of CRISPR/Cas system has been leveraged to design biosensors that offer a more efficient and accurate approach to bacterial detection compared to the existing techniques. Significant research has been focused on developing biosensors based on the CRISPR/Cas system which has shown promise in efficiently detecting pathogenic bacteria or virus. In this review, we present a biosensor based on the CRISPR/Cas system that has been specifically developed to overcome these limitations and detect different pathogenic bacteria effectively including Vibrio parahaemolyticus, Salmonella, E. coli O157:H7, and Listeria monocytogenes. This biosensor takes advantage of the CRISPR/Cas system's precision and versatility for more efficiently accurately detecting bacteria compared to the previous techniques. The biosensor has potential to enhance public health and ensure food safety as the biosensor’s design can revolutionize method of detecting pathogenic bacteria. It provides a rapid and reliable method for identifying harmful bacteria and it can aid in early intervention and preventive measures, mitigating the risk of bacterial outbreaks and their associated consequences. Further research and development in this area will lead to development of even more advanced biosensors capable of detecting an even broader range of bacterial pathogens, thereby significantly benefiting various industries and helping in safeguard human health

이 연구는 대학생들의 병역의식에 미치는 안보교육의 영향관계를 분석 하는 것이다. 2022년부터 2023년 3개 학기에 걸쳐서 안보관련 교양과목 을 수강한 212명을 연구대상자로 선정하여 안보교육과 병역의식에 대한 설문조사 방법을 시행하였다. SPSS 26.0을 활용하여 기술통계, 독립표 본 t-검정, 상관분석, 왜도와 첨도, 일원배치 분산분석(ANOVA)을 수행 하였다. 분석결과, 첫째, 안보교육을 수강하기 전 대학생들의 병역의식 수준은 저조하였다. 둘째, 안보교육 수강 후 대학생들의 병역의식 수준이 유의미하게 증가하였다. 셋째, 안보교육은 병역의식에 통계적으로 유의미 한 관계와 영향을 미쳤다. 본 연구를 통해서 징병제 국가인 한국에서 병 역의무 대상자들의 병역의식 고취를 위한 중요한 근거자료를 제공하고, 군 복무의 당위성을 확보할 수 있는 국방 및 교육정책 수립과 논의에 시 발점이 될 것으로 사료된다.