With the increasing demand for energy conservation and emissions reduction in the shipping industry, suctionbased turbine sails have emerged as a novel wind energy utilization technology and have become a research hotspot. This study focuses on the aerodynamic performance of suction-based turbine sails with the aim of investigating the effects of suction intensity and suction port position on their aerodynamic characteristics. By employing Computational Fluid Dynamics (CFD) numerical simulations using the Re-Normalization Group (RNG) k–ε turbulence model and the SIMPLE algorithm, this study provides a detailed analysis of lift and drag coefficients, pressure distribution, and vorticity distribution under various combinations of suction intensity (γ) and suction port position (α). The results show that variations in suction intensity significantly affect the lift and drag characteristics of the turbine sail, while changes in the suction port position directly influence the attachment and separation behavior of airflow on the sail surface. Furthermore, a synergistic effect is observed between γ and α—their interaction not only alters the flow distribution but also plays a critical role in determining the overall performance of the turbine sail.By comprehensively considering the influence of these two factors, the study draws key conclusions for optimizing the design of suction-based turbine sail, providing valuable theoretical insights and technical guidance for their practical application in wind-assisted marine propulsion.

Background: Portable, small computers and smartphones are now considered essential tools in modern society and smartphone ownership and usage rates are rising every year. However, excessive smartphone use can have musculoskeletal and postural implications, leading to “smartphone addiction” and related dysfunctions. Objects: This study aimed to investigate the effects of smartphone addiction on scapular position and muscle activity during shoulder abduction in asymptomatic individuals. Methods: A total of 45 participants were classified into high-risk, middle-risk, and low-risk groups based on their smartphone addiction levels. Scapular position was measured using the scapular index, round shoulder posture (RSP), lateral scapular slide test, and scapulohumeral rhythm spine angle. Muscle activity was assessed using electromyography of the upper trapezius (UT), lower trapezius (LT), serratus anterior (SA), and anterior deltoid (AD) muscles during shoulder abduction. Results: Smartphone addiction was significantly associated with altered scapular position and muscle activity. The high-risk group exhibited greater forward head posture and more pronounced RSP. Additionally, the high-risk group had lower SA activation and higher UT, LT, and AD muscle activity, indicating compensatory mechanisms due to altered scapular positioning. Conclusion: These findings suggest that excessive smartphone use contributes to postural deviations and altered muscle activation patterns, which may lead to musculoskeletal dysfunction over time. Clinicians should consider smartphone use when assessing patients with scapular dysfunction, and future studies should explore interventions to mitigate these effects.

Background: Subacromial impingement syndrome (SAIS) is a prevalent cause of shoulder pain, often linked to abnormal scapular positioning and movement. Prior research suggests that scapular stabilization exercises (SSE) may improve SAIS symptoms, but there's a lack of research on the specific quantitative effects of SSE on scapular position and function. Objectives: To investigated the effects of SSE on scapular position and shoulder function in patients with SAIS. Design: A randomized controlled trial. Methods: Thirty participants with SAIS, diagnosed using the Scapular Dyskinesis Test (SDT), were randomly assigned to either a scapular stabilization exercise group (SSEG, n=15) or a traditional rehabilitation training group (TRTG, n=15). Both groups received eight weeks of intervention. Outcome measures included the scapular index (SI), measured using digital vernier calipers, and the Shoulder Pain and Disability Index (SPADI). Results: The SSE group showed statistically significant increases in scapular index (SI) and significant decreases in Shoulder Pain and Disability Index (SPADI) pain and disability scores. The TRTG showed no statistically significant changes in these measures. The SSE group demonstrated statistically significant improvements in SI and SPADI scores compared to the TRTG. Conclusion: These findings suggest that SSE may be a valuable treatment option for improving shoulder function and reducing pain in patients with SAIS. Further research is needed to validate these findings and explore the longterm effects of SSE.

We see that the method of calculating the moon's position in the celestial sphere is little different from the method currently used. Currently, an elliptical model is used, while Sechoyuhwi and Chongzhen Lishu(崇禎曆書) use a four-epicycles model descibed in Lixiang Kaocheng(曆象考成) when calculating the equations of the Moon. The equation of center( EoC) calculated in this way has little difference from the currently calculated EoC. Considering the four-cycles model, the EoC occurs due to the center difference of the moon's orbit. The evection and variation occur when the sun exerts gravitational perturbation on the moon's orbit, and those are expressed as the 2nd and 3rd equations. However, when calculating the moon's position, Sechoyuhwi and Chongzhen Lishu used the apparent solar time. therefore these almanacs deal with another equation which is not the same as the 4th equation described as the equation of annual inequality. Furthermore these calendars consider the longitude reducing when the longitude along the lunar path in the celestial sphere is converted to that along the ecliptic. In this case the same as the 5th equation described as the equation of reduced ecliptic is corrected. When the ecliptic latitude were calculated, these calendars have considered the latitude evection of the lunar inclination to the ecliptic with the two-cycles model. At the time when Sechoyuhwi was written, Joseon’s lunar position tracking was at the highest level before Newton knew how to do it.

The death penalty is a controversial topic due to its implications for human rights, particularly the right to life, considered a fundamental right. Some argue that the death penalty violates this right, while others believe it is a form of justice for severe crimes. This research explores the debate between the death penalty and human rights using a normative, juridical method and literature review. Some countries still practice the death penalty, while others have abolished it, citing concerns about justice and fairness. The criminal justice system often exhibits disparities, with marginalized groups facing higher rates of execution than wealthier or majority individuals. These inequalities challenge the principle of equality before the law and the integrity of justice. Efforts to reform include restricting or abolishing the death penalty due to concerns about law enforcement abuse, judicial errors, and ineffectiveness in deterring crime. The debate over its place in justice systems remains ongoing.

Background: The peroneus longus (PL) and peroneus brevis (PB) function as the primary muscles of eversion, a movement closely associated with tibial external rotation for ankle mortise stability. Ankle motion and tibial rotation vary based on different ankle and knee positions. Objects: This study aimed to investigate the PL, PB, and biceps femoris (BF) muscle activation and eversion strength during side-lying isometric eversion exercise based on different ankle positions (neutral [N] and plantarflexion [PF]) and knee positions (90° flexion [KF] and extension [KE]). Methods: Thirty healthy adults with an Ankle Joint Functional Assessment Tool score of ≥ 22 were recruited (mean age = 24.8 ± 3.1 years). Maximal isometric eversion strength and submaximal muscle activation of the PL, PB and BF were measured during isometric eversion exercise in side-lying. A 2 × 2 repeated measures analysis of variance was performed to investigate differences in muscle activation and strength. Results: The PL and PB muscle activation showed significant main effects with the knee and ankle positions (p < 0.05); activation was greater in the KE and PF positions than in the KF and N positions. The BF muscle activation showed a significant interaction effect with knee and ankle positions, which was greater in knee extension and ankle plantarflexed (KEPF) position than in knee flexion and ankle plantarflexed (KFPF) position (p < 0.05). Eversion strength showed a significant main effect only in ankle position (p < 0.05) and was greater in the N position than in the PF position. Conclusion: The results of this study indicate that the KEPF position can be recommended to facilitate contraction of the PL and PB during side-lying eversion exercise. Furthermore, the effects of the knee-ankle positions should be considered for measuring ankle eversion strength and implementing the isometric submaximal side-lying eversion exercise.

실내 벽면녹화용으로 많이 이용되고 있는 덩굴식물 스킨답 서스(Epipremnum aureum)는 줄기의 상·하 유인방향에 생장 차이를 보이는 것으로 알려져 있으나 그 원인에 대해서는 구 체적으로 알려져 있지 않다. 본 연구에서는 광원의 위치(상· 하)와 줄기 유인방향(상·하)에 따른 스킨답서스의 생장반응을 15주간 조사하였다. 그 결과 정상적인 식물 생장 환경조건인 광원이 위에 있고 줄기를 위로 유인한 처리를 제외하고는 광 원이 아래에 위치하거나 줄기를 아래로 유인한 처리에서는 굴 곡과 뒤틀림 정도가 매우 컸다. 이것은 굴광성과 항굴지성에 대한 식물체 지상부의 반응 결과이며, 굴광성과 항굴지성의 경합반응은 식물체 아래 광원이 위치하고 줄기를 아래로 유인 했을 때 더욱 뚜렷하였다. 광원의 위치와 줄기 유인방향에 따 른 스킨답서스의 생장 반응은 굴광성과 항굴지성으로 설명 가 능하며 굴광성의 영향이 상대적으로 높게 나타났다.

본 연구는 교류분석이론에 근거해서 특성화고등학교 학생들의 스트레 스와 학교적응에 미치는 긍정적인 영향을 미치는 인생태도를 검증하여 특성화고등학교 학생들의 학교적응에 도움을 주는데 목적이 있다. 이를 위하여 대전지역 전체(10개교) 특성화고등학교 재학생 500명을 대상으로 자료를 수집한 다음 인생태도를 교류분석이론에 기반 한 4가지(Ⅰ,Ⅱ,Ⅲ, Ⅳ)로 분류한 후, IBM SPSS 28, AMOS 28을 활용하여 모형의 적합도 및 변인 간의 관계를 검증하였다. 연구 결과 첫째, 자기부정이 포함된 Ⅰ 번(자기부정, 타인긍정), Ⅱ번(자기부정, 타인부정) 태도는 특성화고등학 교 학생들의 스트레스를 증가(+)시키고, 자기긍정이 포함된 Ⅲ번(자기긍 정, 타인부정), Ⅳ번(자기긍정, 타인긍정) 위치의 태도는 특성화고등학교 학생들의 스트레스를 감소(-)시키는 것으로 나타났다. 둘째, 학교적응에 긍정적(+)인 영향을 미치는 태도는 Ⅳ번(자기긍정, 타인긍정) 태도로 나타 났다. 이상의 연구 결과로 볼 때 특성화고등학교 학생의 스트레스를 줄 이고 학교적응을 위해서는 학생들의 부정적인 인생태도(Ⅰ,Ⅱ,Ⅲ)를 자각 시켜 스스로 긍정적인 인생태도(Ⅳ)로 이동하도록 돕는 것이 중요하다. 본 연구는 교류분석이론이 스트레스 완화 및 적응에 유용하다는 것을 지 지하는 결과인 동시에 특성화고등학교 학생들의 건강 및 학교적응을 돕 는 정책 및 실천을 위한 기초자료를 제공한다는 점에 의의가 있다.

감정적 맥락이 기억에 미치는 영향을 이해하는 것은 인간의 인지 능력을 종합적으로 이해하는데 매우 중요하다. 이전 연구에서는 주로 시각적 자극에 초점을 맞춰 이러한 관계를 탐구했다면, 본 연구는 음성으로 제시되는 감정 맥락으로 탐구의 영역을 확장하여 언어적 맥락의 각성도와 정서가가 기억에 미치는 영향을 조사하고 특히 서열 위치 효과를 완화하는지에 주목하였다. 연구 1에서는 단어 목록의 중반부에 제시되는 음성 감정 맥락의 각성도가 단어 음성 기억에 어떤 영향을 주는지 알아보았다. 실험 결과, 각성도가 낮은 맥락에 노출되었을 때 목록 후반부의 기억력 이 저하되는 것으로 나타났다. 연구 2에서는 각성도 수준을 통제했을 때 목록의 중반부에 제시되는 음성 감정 맥락 의 정서가가 단어 음성 기억에 미치는 영향을 조사했다. 실험 결과, 부정적 맥락은 함께 제시되는 단어의 기억력을 저하시킨다는 사실을 발견했다. 연구 결과는 음성을 통해 제시되는 감정 맥락이 음성 자극의 기억 처리를 촉진하지 못한다는 것을 시사한다. 특히 부정적 정서 맥락은 서열 위치 효과를 강화하는 것으로 나타났다. 즉, 맥락과 기억 자극이 음성으로 동일할 경우 부정적 감정 맥락은 과제 수행에 간섭으로 작용하여 감정 맥락의 기억 향상 효과를 유발하지 못하는 경향을 보인다. 이는 청각적으로 전달되는 감정 맥락이 언어 기억 과정에 미치는 영향을 이해하는 데 중요한 통찰을 제공한다.

India has been a member of the BRICS group since 2009. It has been a staunch advocate for the synergistic power. Their summits have focused on a wide range of topics, all of which share the common goal of reorganizing the global economic and political order. The BRICS nations have together accomplished several significant milestones which include the establishment of the New Development Bank, the BRICS Payment System, collaborative anti-terror programs, climate mitigation, green energy, and other such initiatives. South Africa played home to the 15th BRICS Summit, which took place in the August of 2023 and was centered around the theme of “BRICS and Africa: Partnership for Mutually Accelerated Growth, Sustainable Development, and Inclusive Multilateralism.” This essay considers issues from an Indian perspective that may pop up in the future BRICS summit.

The adhesive design of a fast steering mirror transmitting a high power laser is one of the important design elements that affect optical aberration of the mirror surface. In this paper, we designed the adhesive part to avoid the high power laser beam of the FSM system. Stiffness and wavefront error are trade-off relationships and an optical design was derived to maintain the wavefront error of the mirror surface at high temperatures while satisfying the bandwidth of the FSM system. For the optimal design of the mirror bonding position, structural analysis was conducted using ANSYS and wavefront error analysis was performed using Zernike polynomial code. Through those analysis, FSM most effective at an angle 60 degrees and a distance of 46mm.

본 논문에서는 무도상 철도판형교에 열차하중이 재하되었을 때 변위를 최소화시키는 하부 수평브레이싱의 보강 형상 및 설치 위치를 검토하였다. 우선 거더와 수평 브레이싱으로 연결된 2거더 구조계의 전체 횡좌굴모멘트에 영향을 주는 요소를 검토하였다. 다음 으로는 무도상 철도판형교의 하부를 설치 위치를 달리하여 수평브레이싱으로 보강하였다. 보강된 무도상 철도판형교에 열차하중 및 거 더의 중심과 열차하중의 재하위치간의 편심거리(e)에 따라 발생하는 축방향의 비틀림모멘트를 고려하여 구조해석을 수행하였다. 보강모 델별로 지간 중앙에서의 단면의 중심에서 발생하는 변위를 검토하여 변위를 최소화시키는 모델을 선정하였다. 본 연구를 통하여 무도상 철도판형교에 열차하중 재하시 변위를 최소화시키는 하부 수평브레이싱의 보강 형상 및 설치 위치를 제안하였다.

This study aimed to suggest a suitable collar pattern by visually evaluating the appearance of the amount of collar drape by the starting position of the lapel line of a double-breasted tailored jacket using a 3d virtual fitting program. It created an avatar based on the mean size of women in their 20s (the 8th Size Korea) using clo network (double fastening: 10cm, collar width: 4.5cm, collar stand: 3cm, and lapel width: 8.5cm). The starting of the lapel twist line was waistline level, the 1/2 level of bustline and waistline, or bustline level, and collar laying amount was 4.5, 5.5, 6.5, or 7.5cm. It was evaluated by garment construction experts using 5, 6, and 4 items on the front, sides, and back, respectively. Descriptive statistics, F-test, Duncantest, and reliability analysis were conducted using SPSS 22. When collar laying amount was 6.5cm, it was best rated regardless of the starting point. Under waist line, when collar laying amount was 6.5cm, it was best rated regardless of the starting point. When collar laying amount was large, the collar’s outline length increased, resulting in unnecessary wrinkles from the neckline to the lapel, affecting the overall collar appearance. When collar laying amount was the smallest, the collar was lifted and the width was narrowed, exposing the seam connecting the collar and neckline. The length of the collar’s outline varied depending on collar laying amount, which was important to make the outline sit comfortably on the body.

최적 운항자세 선정 기술이란 주어진 운항 배수량과 운항 선속에서 최소의 저항을 가지는 즉, 최적의 연료 소비 효율을 가지는 초기 선수흘수와 선미흘수를 제시하는 것이다. 본 논문의 주 목적은 대상선박의 유효동력 데이터를 기반으로 주어진 운항조건에서 최대 의 에너지효율을 가지는 최적의 운항자세를 선정하는 프로그램 개발하는 것이다. 본 프로그램은 인공지능 기법에 의한 파이썬 기반 GUI(Graphical User Interface)로 작성되어 선주가 쉽게 사용할 수 있도록 하였다. 그 과정에 있어 대상 선박 소개, 전산유체역학(CFD)을 통한 유효동력 데이터 수집, 심층학습을 사용한 유효동력 모델 학습 방법 그리고 심층신경망(DNN) 모델을 응용한 최적 운항자세 제시 프로그 램을 구체적으로 설명하였다. 선박은 운항 별로 화물을 싣고 내리게 되고, 이에 화물 적재량이 변화되고 배수량이 변경된다. 선주는 배수 량 별 예상 선속에 따라 최소저항을 가지는 즉, 최대의 에너지효율을 가지는 최적의 운항자세를 알고자 한다. 개발된 GUI는 해당선박의 태블릿 PC와 앱에 설치하여 최적 운항자세 선정에 활용 가능하다.

Rotylenchus pini Mamiya, 1968 was reported from rhizospheric soils of Zoysia japonica in Korea. Females and males of the characterized population conform to the original species description from Japan and also to other subsequent species descriptions with variations in a few details in morphometrics including the existence of pharyngeal gland overlap in some specimen. Bayesian analysis of all the three DNA markers consistently grouped R. pini together with Rotylenchus species including R. zhongshanensis, a morphologically close species. Additionally, the newly obtained sequences of R. pini were found to be almost identical to the sequences assigned to Rotylenchus aff. devonensis in GenBank. These Rotylenchus aff. devonensis isolates might be representatives of R. pini populations. The current and previous phylogenetic studies supported by the recorded morphological plasticity within populations of the genus validate the proposed synonymy of Pararotylenchus with Rotylenchus.

Background: Proprioception in the ankle joint is important for maintaining balance. There is a correlation between joint position sense (JPS), balance and ankle dorsiflexion range of motion (DF-ROM). Objectives: The purpose of this study was to compare the effects of talocrural joint mobilization (TJM) and muscle energy technique (MET) of plantar flexor muscle (PF) on improving joint position sense (JPS) and static balance. Design: Cross-over randomized trial research. Methods: Sixteen participants (male 10, female 6; 20’s of their age) without ankle instability were recruited. In a randomized, three conditions, no intervention, talocalcaneal mobilization, and PF-MET were all applied to 16 participants. For TJM, the Kaltenborn grade 3 joint gliding method, in which the talus moves posteriorly perpendicular to the tacrocrural joint plane, were used. In the PF-MET, MET method were applied gastrocnemius muscle and soleus muscle with 25% of 1 Repeat Maximum of each muscle. The all participants performed PF-MET and TJM for 18 minutes. DF-ROM measured the weightbearing lunge test. JPS measured using the active joint angle reproduction test. Static balance was measured displacement of center of pressure parameter. Results: PF-MET and TJM had significant differences in DF-ROM and AP displacements. PF-MET significantly increased at 5° and 15° of plantar flexion and 5° of dorsiflexion, and COP velocity significantly decreased in JPS compared to TJM. Conclusion: PF-MET and TJM are effective in increasing DF-ROM. However, PF-MET has a more positive effect on improving JPS and static balance than on talocrural joint mobilization.

복부 MRI 검사에서 높은 수준의 병렬기법을 적용 시 영상의 질을 떨어뜨리는 둘러겹침인공물을 빈번히 생성한다. 이것 은 구조물이 겹쳐서 나타나는 현상으로 복부 인체 구조상 양쪽 팔이 맞닿아 있어서 FOV를 벗어난 양쪽 팔이 영상의 반대 방향 인공물을 발생하는 문제를 초래한다. 이러한 제한점으로 복부 MRI 검사에서는 두경부 및 근골격 검사 부위와 비교하 여 낮은 수준의 병렬기법을 적용하여 검사 시간을 증가시키는 문제가 있다. 이에 본 연구에서는 팔을 위로 올리는 자세를 활용하여 환자의 간단한 자세의 변화를 통하여 병렬기법을 극대화하여 검사 시간을 최소화하면서 영상의 인공물을 제거하 는 데 목적을 두었다. T2, T1 강조 영상을 관상면으로 획득하였다. 연구의 재현성을 높이기 위하여 작은 팬텀을 나란히 놓고(팔 내리는 자세), 한번은 작은 팬텀을 제거하고 영상을 (팔 올리는 자세) 각각 병렬기법인 SENSE 가속인자를 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0까지 10번씩 획득한 후 영상의 불균일도를 측정하였다. 팬텀으로 확인하기 어려운 인체 부위 의 영상을 확인하기 위하여 정상인 자원자 1명을 대상으로 팬텀 연구와 같은 매개변수 조건으로 영상을 획득하였다. SENSE 가속인자가 높아질수록 팔을 올리는 자세에서 영상의 불균일도가 낮게 측정이 되었고 통계학적으로 유의하게 나타 났다. 본 연구는 간단한 자세 변화만으로 병렬기법을 극대화하며 영상획득 시간 단축 및 인공물을 개선방안을 제시하는 데 의의가 있다.