Painting pretreatment is an important task in determining the life of painting as it removes rust or foreign substances from the painting surface and gives adhesion between the painting surface and the painting surface. Since painting pretreatment is an important task, IMO strictly requires that the painting pretreatment surface be maintained at a Sa 2.5 grade and the surface roughness is 30μm~75μm. Painting pre-processing is an important task that determines the lifespan of a painting, but it is done through visual inspection by the inspector, and the quality varies depending on the inspector. In this study, in order to develop a quality measurement system for the painting pretreatment surface, Matlab2023b was used to determine the range of appropriate quality brightness by comparing the brightness of the painting pretreatment surface and surface roughness.

This study investigated the effects of exposure frequency, depth of processing, and activity repetition types on vocabulary learning. In total, 78 South Korean fifth-grade students were divided into four conditions. Students in each condition were asked to read a passage with four of the eight target words (exposure: four times) and the other four words (exposure: once) for three days, and to perform the vocabulary activities assigned to each condition. According to the results, exposure frequency and activity repetition type had significant effects on vocabulary learning. Activity repetition type also had a significant interaction effect with exposure frequency and depth of processing. Notably, presenting a word 12 times (4x3) in reading intervals had a more positive impact on vocabulary learning than presenting it three times (1x3), particularly when different vocabulary activities were repeated. Meanwhile, when the same activity was repeated, an activity with a higher depth of processing was more effective for vocabulary learning.

As a result of this study, the performance evaluation of the development of laminated paper automatic adhesive processing machine is considered and concluded as follows. The cardboard processing unit for automatic folding and gluing designed a feeder for supplying cardboard, and the prototype production was compared with the existing production and the developed product, and the production rate was improved from 31,100 to 46,500 pieces per day, and the production speed was increased from 68 to 98. The defect rate was solved by solving the folding problem by comparing the existing production and the developed product, and the standard of the defect rate of the product was based on the folding, and the X1-X4 average defect rate was confirmed to be 0,000607%.

The consumption of enoki mushrooms has been associated with cases of listeriosis produced by Listeria monocytogenes, highlighting the significance of sanitizing food-contact surface, such as the velcro used in welding processing of enoki mushrooms, to ensure microbial safety. We investigated the inhibitory activity of nine chemical disinfectants at regular concentrations against L. monocytogenes isolated from a mushroom farm environment. The bacterial suspension was prepared in phosphate buffered saline and mushroom extract broth and inoculated onto the velcro surface. After inoculation, most disinfectants reduced the initial 8 log CFU/coupon concentration by less than 2 log CFU/coupon during a 5-min treatment. Slightly acidic hypochlorous water showed a reduction of approximately 4 log CFU/coupon when tested for more than 30 min at the maximum allowable concentration of 200 mg/L. Sodium hypochlorite solution showed a reduction of approximately 5 log CFU/coupon when used at 100 mg/L for 60 min. Peracetic acid, at the maximum allowable concentration of 300 mg/L, showed the most effective reduction of 5 log CFU/coupon or more when the surface was treated with 37.5 mg/L for 30 min. These results indicate that peracetic acid can be used as the disinfectant strategy to control cross-contamination of L. monocytogenes on the velcro surface of plastic wrappers used in the welding processing of enoki mushrooms.

In this study, we examined dimensional changes in processing carbon fiber composites using a cost-competitive domestic high-speed router. Lacking temperature compensation features found in typical machines, it faces increased defect rates due to temperature fluctuations during processing. To mitigate this, we defined specific processing temperature conditions, established hole positions as distance references for various temperatures, and measured dimensional changes. This enabled us to calculate necessary dimensional corrections, minimizing thermal deformation.

이 연구는 중국의 이미지 처리 소프트웨어 메이투를 중심으로 하여 기 술수용이론을 적용하고 확장하여 중국 사용자들의 이미지 처리 소프트웨 어 사용 의도에 대한 가능성을 탐구하는 것이다. 이를 위해 설문조사 방 법을 사용하여 사회의 다양한 계층의 다양한 그룹을 조사하고 수집한 데 이터를 분석했다. 연구 결과는 사용자의 사용 의도에 영향을 미치는 것 으로 나타났으며, 특히 사용자의 편리성과 유용성에 더해, 호기심과 자아 형상 일치성도 메이투 사용자의 사용 의도에 긍정적인 영향을 미치는 것 으로 나타났다. 본 논문의 연구 결과는 메이투와 같은 이미지 편집 소프 트웨어의 개발과 운영에 가치 있는 통찰을 제공할 수 있다.

Phosphine is a common pesticide used to control grain pests in Rice Processing Complex(RPC). However, increasing use of aluminum phosphide caused the occurrence of phosphine resistance pests. In this study, phosphine resistance pests collected at RPC in 2023 was investigated with FAO No. 16 test, Dihydrolipomaide dehydrogenase(DLD) test and amino acid mutation analysis to identify the occurrence of phosphine resistance in Korea. Tested pests were collected in the 7 province 35 region. As a result of the FAO test of 21 regions, all sample were phosphine sensitives. In DLD test and amino acid analysis, 7 region samples were weak resistances. It is required to inspect the RPC and other grain storage continuously to inhibit the widespread of resistant pest.

본 연구의 목적은 회복탄력성이 정보처리에 미치는 영향을 연구하기 위함이다. 본 연구에서는 남자 고등학생 39 명을 무작위로 추출한 다음 회복탄력성 척도(KRQ-53) 점수에 따라 상위집단(13명), 중간집단(13명), 하위집단(13명) 에 무선 할당하였다. 실험 과제는 단순반응시간, 선택반응시간-1, 그리고 선택반응시간-2 였다. 피험자가 과제를 실시 하는 동안 Fp1, Fp2, F3, F4, Fz, Cz, Pz, C3 영역에서 사상관련전위(ERP)를 측정하였다. 본 연구의 결과, 첫째 세타 파의 경우 중간집단이 상위 및 하위 집단보다 높게 나타났다. 둘째, 알파를 분석한 결과, 상위집단이 중간 및 하위집 단보다 알파파가 높게 나타났다. 셋째, 미드-베타파를 분석한 결과 하위 및 중간집단의 미드 베타파가 상위집단보다 높은 것으로 나타났다. 넷째, P300 진폭은 선택반응시간-1에서 회복탄력성 중간집단이 상위 및 하위집단보다 높게 나타났다. 본 연구의 결과는 회복탄력성 수준에 따라 정보처리가 다르게 나타난다는 것을 보여준다.