본 연구는 기술수용모델(TAM), 컴퓨터 사회적 행위자 이론(CASA), 그 리고 자극-유기체-반응(S-O-R) 모델을 종합적으로 활용하여, AI 기반 디지털 휴먼 투어 가이드의 ‘신기술적 속성’과 ‘사회적 행위자 특성’이 문화관광 맥락에서 방문객의 감정적 경험 및 문화적 정체성 형성에 어떻 게 작용하는지를 규명하였다. 이를 위해 현장 조사와 온라인 설문을 통 해 총 436부의 유효 표본을 확보하고, 구조방정식 모형과 매개분석을 실 시하였다. 연구 결과, 지각된 기술적 새로움(technological novelty), 신 뢰도(credibility), 인간적 특성(anthropomorphism), 그리고 행위성 (agency)은 모두 방문객의 감정적 경험을 유의미하게 높이는 것으로 나 타났으며, 이는 직·간접적으로 문화적 정체성을 강화하는 데 기여하였다. 반면 지각된 지능적 우위(intelligent advantage)는 통계적으로 유의한 영향이 확인되지 않아, 경험 중심의 맥락에서는 순수하게 합리적인 기술 적 특성만으로는 충분한 방문객 공감을 이끌어내기 어렵다는 점이 시사 되었다. 본 연구는 S-O-R 모델 내에서 감정적 경험의 매개 역할을 부각 함으로써, TAM 및 CASA 이론의 적용 범위를 확장하였다. 또한 실무적 으로는 AI 기반 투어 가이드 디자인 시 새로움, 신뢰도, 인간적 특성, 그 리고 상호작용적 행위성을 강조함으로써 방문객의 감정적 몰입과 문화적 태도를 제고할 수 있음을 제안한다.

The rotary type dust remover is a device in which the rake assembly filters and processes clumps in the water while rotating and repeating movements along the track. It is installed in the pump suction part of the drainage pump station and the rainwater pump station to protect the pump to ensure smooth drainage. Since the rake assembly plays a key role in filtering out complications while passing through the water, stainless steel is applied to all components constituting it, and damage or failure due to deformation causes a crisis in case of heavy rain. This is because the existing rake assembly is excellent in rigidity, but all components are assembled by welding, which takes a lot of time for repair and replacement. In this study, shape design for rakes and assemblies of the rotary type dust remover, structural analysis to secure reliability, and demonstration tests were conducted through prototype production. Through this, it is intended to help prevent the stiffness of the joint of the rotary type dust remover from deteriorating, reduce time and cost, and efficient operation.

Structures compromised by a seismic event may be susceptible to aftershocks or subsequent occurrences within a particular duration. Considering that the shape ratios of sections, such as column shape ratio (CSR) and wall shape ratio (WSR), significantly influence the behavior of reinforced concrete (RC) piloti structures, it is essential to determine the best appropriate methodology for these structures. The seismic evaluation of piloti structures was conducted to measure seismic performance based on section shape ratios and inter-story drift ratio (IDR) standards. The diverse machine-learning models were trained and evaluated using the dataset, and the optimal model was chosen based on the performance of each model. The optimal model was employed to predict seismic performance by adjusting section shape ratios and output parameters, and a recommended approach for section shape ratios was presented. The optimal section shape ratios for the CSR range from 1.0 to 1.5, while the WSR spans from 1.5 to 3.33, regardless of the inter-story drift ratios.

The electronic structures of graphene nanoflakes (GNFs) were estimated for various shapes, sizes, symmetries, and edge configurations. The Hückel molecular orbital (HMO) method was employed as a convenient way of handling the variety of possible GNF structures, since its simplicity allows the rapid solution of large system problems, such as tailoring optoelectronic characteristics of molecule containing large number of carbon atoms. The HMO method yielded the electronic structures with respect to the energy state eigenvalues, with results comparable to those obtained by other approaches, such as the tightbinding method reported elsewhere. The analyses included the consideration of various types of edge configurations of 68 GNF systems grouped by their geometric shape, reflecting symmetry. It was inferred that GNFs in the small length scale regimes, below 1 nm, which are effectively small polycyclic aromatic hydrocarbon molecules, exhibit the optoelectronic characteristic of quantum dots. This is due to the widely spaced discrete energy states, together with large energy gaps between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO). With increasing size this arrangement evolves into graphene-like ones, as revealed by the narrowing HOMO-LUMO gaps and decreasing energy differences between eigenstates. However, the changes in electronic structure are affected by the symmetries, which are related to the geometric shapes and edge configurations.

In the development of a digital multi-process welding machine, we aimed to analyze the heat dissipation effects resulting from changes in the transformer's shape. Two installation configurations for the transformer, vertical and horizontal, were proposed. Thermal-flow analysis was conducted for the welding machine, taking into account variations in spacing between each proposed configuration. The results indicated that the shape and spacing of the components did not significantly alter the airflow around the reactor coil, which is the main heat-generating component of the machine. When comparing the heat dissipation effects across models with different transformer spacings, it was observed that models with narrower spacing exhibited improved heat dissipation, while the vertical configuration demonstrated a slightly higher heat dissipation effect overall. Transient analysis revealed the irregularities in internal flow and the resulting scattered temperature distribution over time within the welding machine.

With technological and social development, high-rise atypical buildings have emerged. In order to take into account the structural vulnerability due to their high-rise atypical shape, systems such as vibration control system and seismic isolation can be applied. In this study, dynamic behavior characteristics analysis was conducted based on the location of the seismic isolation system installation of the atypical facade shape Tapered and reverse shell structure models. With the installation of Lead Rubber Bearing(LRB), the maximum story drift ratio showed a decrease, but the maximum absolute acceleration showed a phenomenon in which the response was amplified in the middle and low story. LRB1(base isolation system) is the most effective for simultaneous control of the two dynamic responses, but the 46th floor of ‘Nor’ and’ RS’ and the 41st floor of ‘TA’ are considered the most effective installation location of the seismic isolation system in consideration of the burden of the seismic isolation system and the structure stability.

This study aimed to investigate the catch selectivity characteristics related to the mesh arrangement of the codend in bottom trawl. Sea trials were conducted using the covered codend method from January 16 to 17, 2024, off the southern coast of Gyeongsangnam-do, focusing on the side panels of diamond and square mesh codend. A probit model was used in the selectivity analysis to estimate retention probability curves for sea pike comparing the  , , and  selectivity lengths, the selection range ( ), and the corresponding  and  values. The estimated 50% selection lengths were 23.82 cm for the diamond mesh and 25.20 cm for the square mesh whereas the corresponding selection ranges were 5.23 cm for the diamond mesh and 3.71 cm for the square mesh. The  and  values for the square mesh were lower, at 35.91 and 36.71, respectively, compared to 37.65 and 38.45 for the diamond mesh. Additionally, the retention probability at a fork length of 15 cm was lower for the square mesh than for the diamond mesh. These findings provide practical insights for gear design while contributing to the reduction of bycatch and small size fish catches in bottom trawl.

This paper studied a new shape unit model based on Gibson and Ashby's theory. As a result of theoretical research, the relative density equation is correlated with relative elasticity, and through this study, the theoretical relationship between the relative elasticity equation was defined. The relative elasticity equation was defined based on the model for which the analysis was performed. According to the analysis results, the diameter of the model was set to 3 mm, and the maximum stress values were confirmed by reflecting the same boundary conditions. The maximum stress for each model is 5668.9MPa for Type 1, 5136.7MPa for Type 2, 5642MPa for Type 3, and 6032.9MPa for Type 4 when the truss diameter is 3mm. The relative elasticity equation was defined based on this condition. In the future, compression analysis will have to be performed in the same way, reflecting the diameter of the truss at 5 mm and 7 mm, to find and define the coefficients of the relative elasticity equation, and verification through experiments will have to be carried out based on the theoretical equation. In addition, in order to be applied in each field, proof through prototype production and installation must be carried out.

최근 이상기후 현상으로 인해 국지성 호우 발생이 증가되어 도로 미끄럼 사고 발생이 증가하는 추세이다. 콘크리트 포장에서는 미끄 럼 저항을 확보하기 위해 그루빙 작업을 실시하여 주행안전성을 향상시키고 배수를 원활하게 하여 수막현상을 억제한다. 본 연구에서 는 그루빙 작업에서의 홈의 방향을 종방향과 횡방향 뿐만 아니라 임의의 방향으로 구성할 수 있으며 다양한 홈의 형상을 구성할 수 있는 동시에 우수한 양생포 기능을 지닌 그루빙 양생 플레이트를 제작하였다. 이러한 그루빙 양생 플레이트를 사용하여 타원형, 삼각 형, 사각형으로 홈 형상을 구성한 콘크리트 공시체를 제작하였다. 공시체를 사용하여 그루빙 방향을 종방향, 횡방향, 45° 방향으로 구 성하였을 경우에 대한 미끄럼 저항성을 BPT 장비를 사용하여 분석하였다. 분석 결과, 그루브 형상이 타원형, 삼각형, 사각형 등으로 차이가 있더라도 BPN 값은 유사하게 측정되었으나 그루브 방향은 종방향, 횡방향, 45° 방향 순으로 BPN 값이 높게 분석되었다.

국내 고속도로의 콘크리트 포장은 줄눈 콘크리트 포장 공법을 주로 적용해 왔으나 잦은 줄눈부 파손으로 인해 최근에는 공용성이 우수한 연속철근 콘크리트 포장(CRCP)을 확대 적용하고 있는 추세이다. CRCP는 우수한 공용성을 가지고 있지만 다량의 철근 사용으 로 인해 초기 시공비가 높은 단점이 있다. 이러한 CRCP의 단점을 보완하고 공용성을 보다 향상시키기 위해 신개념 철근콘크리트 포 장(ARCP)이 개발되었다. 본 연구에서는 ARCP의 공용성 검증을 위해 고속도로 제14호선 함양~울산 구간에 시공된 ARCP와 동일한 구 간에 시공된 CRCP의 균열조사를 수행하였으며 균열형상 및 균열간격 등을 비교 분석하였다. 분석 결과 ARCP에서 발생한 균열은 CRCP와 비교하여 대부분 직선 형상으로 발생하였으며 균열간격도 보다 균일한 것을 확인하였다. 또한, ARCP에서는 좁은 균열간격, 지그재그 균열, 분리균열 등 부적절한 균열의 발생이 매우 적은 것을 확인하였다. 따라서 ARCP의 균열형상 분석 결과로 보아 ARCP 는 CRCP의 우수한 공용성을 보다 향상시킬 수 있는 공법이라는 것을 검증하였다.

In this study, the performance evaluation of steel dampers was conducted based on existing research results. The test variables are cross-sectional shape and lateral deformation prevention details. As a result of performance tests according to cross-sectional shape, the circular cross-section was evaluated to be superior than the rectangular cross-section in terms of envelope, stiffness reduction, and energy dissipation capacity. In addition, it was evaluated that the rectangular cross-section where lateral deformation occurs can be restrained by lateral deformation prevention details, thereby improving strength and deformation capacity.

노후 건축물은 불충분한 전단성능으로 인해 위험성이 증가하고 있다. 특히, 콘크리트 보의 전단 성능은 구조물의 붕괴를 지 연시키는 것에 있어 중요하다. 이를 개선하기 위해 본 연구는 철근콘크리트보의 전단보강 기법을 제안하고 성능을 실험적으로 평가하 였다. 이를 위해 기존 니켈-티타늄계 형상기억합금보다 경제성이 우수한 철계 형상기억합금(Fe SMA)을 선정하였다. 불충분한 내부 횡 방향 철근이 반영된 세 개의 콘크리트 보를 제작하였고 무보강, 100mm 간격, 200mm 간격의 보강 간격을 적용하였다. 정적가력시험 결과, 보강된 시험체가 강성 증진에 효과적인 것으로 밝혀졌다. 특히, 200mm 간격의 보강은 콘크리트 보의 연성적인 휨거동도 이끌어 내었다.

This study aimed to identify changes in upper body measurements and body shape types among women over a 10-year period based on data from the 6th and 8th Size Korea Anthropometric Surveys. The study used regression analysis to explore the relationship between various dimensions, enabling the prediction of different upper body dimensions based on height and waist circumference. The sample consisted of 1,179 women in their 20s who participated in the 6th (2010) and 8th (2020) Size Korea Anthropometric Surveys, with 33 items analyzed. Initially, most items, except those related to height, exhibited larger values in the 8th Survey than in the 6th, suggesting a general increase in the upper body dimensions of females in their 20s over the 10-year period. Subsequent factor analysis revealed three factors crucial for determining the upper body shape of women in this age group. The body shapes were then categorized into four distinct clusters. Regression analysis indicated that both waist circumference and height significantly influence most of the measured items, with waist circumference having a more substantial impact in most models. Through this research, we aim to provide foundational data that reflects the evolving upper body shapes of women in their 20s to enhance clothing production and improve the sizing system.

최근 다양한 기술의 발달로 인하여 시간과 공간의 제약 없이 관람객에게 사실감과 현장감을 표 현하며 관람객에게 실제적인 감각을 선사하는 실감미디어에 대한 관심과 시장이 늘어나고 있다. 모든 미디어는 기술 발전에 따라 더 실제적인 감각을 선사할 수 있는 콘텐츠를 제공한다. 기존 사각형의 영상 프레임에 머물던 디스플레이의 형태를 감상하는 환경과 다르다. 이러한 360도 영상은 콘텐츠 제작, 영상 렌더링 플랫폼 및 영상 이미징 장비 등 다양한 분야에서 적용되고 있 다. 전방위적인 360도를 제공하는 돔 형태를 통한 실감미디어 콘텐츠의 사례가 국내와 국외적 으로 늘어나고 있다. 하지만 이러한 상황에 비하여 360도의 돔 형태를 활용한 실감미디어의 콘 텐츠 사례 연구가 부족한 상황이다. 따라서 이 논문에서는 360도의 영상 개요를 살펴보며 돔 형태 영상의 디스플레이가 가진 특성을 알아보았다. 본 논문을 통해 360도 돔 형태를 활용한 실감미디어의 콘텐츠 사례들을 살펴보며, 이를 통하여 360도 영상을 기반으로 돔 형태를 활용 한 실감미디어 콘텐츠를 기획하려는 다양한 영상 창작자들에게 보탬이 되고자 한다.

In this study, the shape evaluation and design of the spare tire carrier for SUV (sports utility vehicle) were addressed through structural analysis. Spare Tire Carrier analysis was conducted to evaluate rigidity, and strength and improvement measures for appropriate shapes were found and reflected in the design. Through structural analysis of the spare tire carrier, this study was conducted to derive an optimal design plan as the stiffness and strength needed to be increased for stable installation of the spare tire carrier. Compared to the existing model, the bar, which was curved, was changed to a straight line to shorten the length, thereby increasing rigidity. In addition, because the moment was concentrated in the structure of the rear hanger mounting bracket, the side part of the bracket was extended, but the cross member stiffness was relatively weak, so it did not have a significant effect.

In this study, the shape evaluation and design of clamp mount for SUVs (sports utility vehicles) was dealt with through structural analysis. The clamp mount analysis was performed to evaluate stiffness, strength and improvement plans for appropriate shape were found and reflected in the design. In addition, strength analysis and was performed in parallel to solve the problem of rib design around the edge part of the clamp mount and the thickness effect results were reflected in the design. As a result of analysis through various design changes, it was possible to present an appropriate reinforcement design shape. In addition, when the thickness of the fuel tank was changed from 3.2mm to 4.0mm, the stiffness of the fuel tank decreased by approximately 30%, and reinforcement was required.