• The Journal of Korean Physical Therapy
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• 제36권1호
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• pp.39-44
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• 2024

Purpose: Cybersickness is a type of motion sickness induced by virtual reality (VR) or augmented reality (AR) environments that presents symptoms including nausea, dizziness, and headaches. This study aimed to investigate how cathodal transcranial direct current stimulation (tDCS) alleviates motion sickness symptoms and modulates brain activity in individuals experiencing cybersickness after exposure to a VR environment. Methods: This study was performed on two groups of healthy adults with cybersickness symptoms. Subjects were randomly assigned to receive either cathodal tDCS intervention or sham tDCS intervention. Brain activity during VR stimulation was measured by 38-channel functional near-infrared spectroscopy (fNIRS). tDCS was administered to the right temporoparietal junction (TPJ) for 20 minutes at an intensity of 2mA, and the severity of cybersickness was assessed pre- and post-intervention using a simulator sickness questionnaire (SSQ). Result: Following the experiment, cybersickness symptoms in subjects who received cathodal tDCS intervention were reduced based on SSQ scores, whereas those who received sham tDCS showed no significant change. fNIRS analysis revealed that tDCS significantly diminished cortical activity in subjects with high activity in temporal and parietal lobes, whereas high cortical activity was maintained in these regions after intervention in subjects who received sham tDCS. Conclusion: These findings suggest that cathodal tDCS applied to the right TPJ region in young adults experiencing cybersickness effectively reduces motion sickness induced by VR environments.

• 문화기술의 융합
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• 제10권4호
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• pp.675-680
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• 2024

본 연구는 포스트 코로나를 기점으로 메타버스 기술의 동향을 살펴보고, 주얼리 산업체의 활용 사례를 분석하는 것에 목적이 있다. 엔데믹(endemic)으로 기업의 비즈니스 환경은 온라인에서 오프라인으로 그 중심의 축이 이동했고, 이에 따라 메타버스에 대한 대중의 관심도 멀어졌다. 하지만 글로벌 주얼리 브랜드의 메타버스 기술 동향을 살펴보면, AR/VR의 기술은 더욱 발전하여 실재감을 높이고 있고, 가상과 현실 간의 이질감이 없는 공간에서 메타버스는 진화하고 있다. 메타버스는 포스트 코로나 시대에서 세 가지 주요 특성을 나타내고 있다. 첫째, 디지털 트윈을 기점으로 비즈니스 영역의 변화가 이루어지고 있다. 둘째, 다양한 정보통신 기술과 융합하고 있다. 셋째, 옴니채널로서 메타버스 운영에 대한 방향성 설정이 중요시 되고 있다. 코로나19 시기에 학습된 자산을 활용하여 디지털 및 온라인 관련 기술에 대한 학습을 지속해야 시장 경쟁력을 확보할 수 있다. 포스트 코로나 시대의 메타버스 기술 동향을 기반으로 주얼리 산업체의 경쟁력을 강화하는 방향에 대해 논하고자 한다.

• 국제초고층학회논문집
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• 제1권1호
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• pp.53-59
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• 2012

With the rise in CPU power and the generalization and popularity of computers, engineering practice also changed from hand calculations to 3D computer models, from elastic linear analysis to 3D nonlinear static analysis and 3D nonlinear transient dynamic analysis. Thanks to holistic design approach and current trends in freeform and contemporary architecture, BIM concept is no longer a dream but also a reality. BIM is not just providing a media for better co-ordination but also to shorten the round-the-clock time in updating models to match with other professional disciplines. With the parametric modeling tools, structural information is also linked with BIM system and quickly produces analysis and design results from checking to fabrication. This paper presents a new framework which not just linked the BIM system by means of parametric mean but also create and produce connection FE model and fabrication drawings etc. This framework will facilitate structural engineers to produce well co-ordinate, optimized and safe structures.

• 패션비즈니스
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• 제9권4호
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• pp.145-160
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• 2005

On the subjects of the female adults in their 20s who love to wear jeans, the wearing reality of basic jean pants and engineered jean pants was examined while pattern comparison and the evaluation of appearance and functions were made to reach the following conclusions: 1. Wearing reality of engineered jean pants Among the examined subjects, 74.8% were found out to favor engineered jean pants. Those who have engineered jean pants turned out to pursue well-known brands more than practicality. 2. Pattern comparison analysis of basic jean pants and engineered jean pants Though similar sizes existed in pants tips and belt width, engineered jean pants showed bigger values in waist circumference, crotch circumference, hip circumference, knee circumference, thigh circumference and so on. There were no big differences in the front part except for the items like crotch circumference and crotch length, but engineered jean pants had bigger sizes in the rear part. Engineered jeans in the rear contained the outward curved silhouette of the legs, curved tips, and a dart design instead of a back yoke. 3. Evaluation of appearance and functions In the scores of appearance, basic jean pants were higher at 3.65 in the order of front > side > back. On the contrary, engineered jean pants were excellent in the order of side > back > front. In the items of functions, engineered jean pants were higher at 4.23 in the order of hips > thighs> waist > abdomen > knee > crotch. On the other hand, basic jean pants showed the order of knee > crotch & thighs > abdomen > hips > waist. In every movement, engineered jean pants revealed higher functionality. In particular, the bigger physical movement led to the greater functional differences between the two kinds of jean pants.

• 한국콘텐츠학회논문지
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• 제17권9호
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• pp.173-183
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• 2017

본 연구는 VR저널리즘인 뉴욕타임즈의 <난민(THE DISPLACED)>을 중심으로 영상텍스트 분석을 실시하였다. <난민>의 영상텍스트 분석은 앵글, 쇼트(크기, 길이, 이동), 제한된 이용자 주도형 상호작용(시점, 사운드)의 틀로 분석 하였다. 그 결과는 다음과 같다. 첫째, 앵글은 Normal 앵글, Low 앵글 위주로 연출되었다. 둘째, 쇼트는 Medium, Full, Long 쇼트 순으로 연출된 것을 확인 할 수 있었다. 셋째, 쇼트의 길이는 대부분 롱테이크 연출이 많았다. 넷째, 대부분의 영상은 고정된 쇼트로 구성되어졌다. 마지막으로, 제한된 이용자 주도형 상호작용이다. 이는 두 가지 방법으로 나뉘는데 사운드와 독립된 주체의 움직임을 통한 시점유도와 이용자들에게 사실적 상황 인지를 통한 자유로운 시점으로 상호작용을 유도했다. 본 연구는 VR 저널리즘에 대한 보다 심도 있는 논의 전진을 위한 기초 연구라고 할 수 있다.

• 한국정보전자통신기술학회논문지
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• 제8권3호
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• pp.214-223
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• 2015

본 연구는 빈집 실태조사에 따른 농촌주거복지의 활용방안을 연구하고자 한다. 연구대상은 2013년 영월군 빈집을 대상으로 실태 현황조사를 하였다. 자료분석은 측정문항을 중심으로 하였고, 통계는 SPSSWIN 16.0을 사용하여 빈도분석, 평균분석을 실시하였다. 분석결과는 첫째, 빈집의 발생배경과 환경이 파악되었다. 둘째, 폐광과 이농현상으로 빈집이 증가되었고, 이는 지역의 경관을 훼손하며, 우범지대로 전락하는 사회문제로 나타났다. 셋째, 빈집을 활용한 리모델링, 정책지원, 다양한 변신유도, 체계적 관리, 주거복지, 지속적 홍보 등의 접근방법이 필요한 것으로 나타났다. 본 연구의 시사점은 빈집으로 인하여 발생되는 사회문제를 해결할 수 있으며, 활용방안을 통하여 농촌주거복지의 발전과 소득증대 및 환경개선은 물론이고, 도시민과 기존거주자를 빈집으로 유인할 수 있는 정책 자료가 될 것으로 사료된다.

• 패션비즈니스
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• 제17권1호
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• pp.131-144
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• 2013

The purpose of this study was to analyse the structure and contents of clothing construction field in the middle-school textbook of technology and home economics with curriculum revised in 2007. 10 kinds of textbooks certified by Ministry of Education, Science and Technology in 2010 were selected and home economics field in them was the subject of this study with the external characteristics such as textbook system, instruction area and contents included. This study was content analysis-oriented and descriptive with data calculated by frequency and percentage. The findings are as follows. In 'Reality of Home-Life', food life area showed highest as 34.4% followed by clothing life(28.7%) and dwelling life(28.7%). The portion of present teachers in writing staffs was highest while there was no textbook where professors of each field were included in writing staffs. The contents of costume society, clothes material, clothes management from section 'Choice and Management of Clothes' in the chapter 'Family Life' and clothing construction from the section 'Making and Modifying Clothes' of the chapter 'Reality of Home-Life' were analysed in this study. Clothing construction-related fields were suggested separately by method of measurement, construction theory, drafting theory, drafting an original form, fabric trimming, utilization of the original form, length measure, cloth cutting, hand stitching, how to use a sewing machine, basting and correction, needlework process, completion, and evaluation. The contents of the unit 'Making Shorts' were about clothing construction theory, human body measurement, drafting an original form, process of making shorts and activity/research/experience. The contents of the unit 'Wearing Clothes after Fixing' in clothing construction-related field were about how to fix and recycling.

• 한국의상디자인학회지
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• 제25권2호
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• pp.111-122
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• 2023

This study aims to collect Big Data related to DIY clothing, analyze the results on a year-by-year basis, understand consumers' perceptions, the status, and reality of DIY clothing. The reference period for the evaluation of DIY clothing trends was set from 2012 to 2022. The data in this study was collected and analyzed using Textom, a Big Data solution program certified as a Good Software by the Telecommunications Technology Association (TTA). For the analysis of fabric-related DIY products, the keyword was set to "DIY clothing", and for data cleansing following collection, the "Espresso K" module was employed. Also, via data collection on a year-by-year basis, a total of 11 lists were generated and the collected data was analyzed by period. The following are the findings of this study's data collection on DIY clothing. The total number of keywords collected over a period of ten years on search engines "Naver" and "Google" between January 1, 2012 and December 31, 2022 was 16,315, and data trends by period indicate a continuous upward trend. In addition, a keyword analysis was conducted to analyze TF-IDF (Term Frequency-Inverse Document Frequency), a statistical measure that reflects the importance of a word within data, and the relationship with N-gram, an analysis of the correlation concerning the relationship between words. Using these results, it was possible to evaluate the popularity and growing tendency of DIY clothing products in conjunction with the evolving social environment, as well as the desire to explore DIY trends among consumers. Therefore, this study is valuable in that it provides preliminary data for DIY clothing research by analyzing the status and reality of DIY products, and furthermore, contributes to the development and production of DIY clothing.

• 국제학술발표논문집
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• The 5th International Conference on Construction Engineering and Project Management
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• pp.279-286
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• 2013

This paper introduces a new method for identification of building energy performance problems. The presented method is based on automated analysis and visualization of deviations between actual and expected energy performance of the building using EPAR (Energy Performance Augmented Reality) models. For generating EPAR models, during building inspections, energy auditors collect a large number of digital and thermal imagery using a consumer-level single thermal camera that has a built-in digital lens. Based on a pipeline of image-based 3D reconstruction algorithms built on GPU and multi-core CPU architecture, 3D geometrical and thermal point cloud models of the building under inspection are automatically generated and integrated. Then, the resulting actual 3D spatio-thermal model and the expected energy performance model simulated using computational fluid dynamics (CFD) analysis are superimposed within an augmented reality environment. Based on the resulting EPAR models which jointly visualize the actual and expected energy performance of the building under inspection, two new algorithms are introduced for quick and reliable identification of potential performance problems: 1) 3D thermal mesh modeling using k-d trees and nearest neighbor searching to automate calculation of temperature deviations; and 2) automated visualization of performance deviations using a metaphor based on traffic light colors. The proposed EPAR v2.0 modeling method is validated on several interior locations of a residential building and an instructional facility. Our empirical observations show that the automated energy performance analysis using EPAR models enables performance deviations to be rapidly and accurately identified. The visualization of performance deviations in 3D enables auditors to easily identify potential building performance problems. Rather than manually analyzing thermal imagery, auditors can focus on other important tasks such as evaluating possible remedial alternatives.

• 전자공학회논문지CI
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• 제48권2호
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• pp.55-65
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• 2011

본 논문은 증강현실 시스템에서 마커가 가려진 상황에서도 강건한 마커 검출을 위하여 지역적인 특징 점들을 이용하는 방법을 제안한다. 가려진 마커를 효율적으로 검출하기 위하여, 첫 번째 단계로 등록된 마커와 가려진 마커가 포함된 입력 영상을 Affine-SIFT (ASIFT, Affine-Scale Invariant Features Transform) 방법을 이용해 정합된 특징 점들을 검출한다. 두 번째 단계로 정합된 특징 점들의 이상치(Outlier)를 제거하기 위하여, 등록된 마커의 특징 점들에 주성분 분석(Principal Component Analysis)을 적용하고 제 1 주축과 제 2 주축으로 사영한 후 중심으로 부터의 거리에 대한 평균값을 타원의 장축과 단축으로 지정한다. 세 번째 단계로 마커의 기하학적인 왜곡을 추정하기 위하여 특징 점들이 이루는 Convex-hull 지점들을 다각형의 꼭짓점으로 정한다. 마지막 단계로, 입력영상에 정합된 특징 점들의 기하적인 왜곡의 변화를 추정함으로써 마커의 가려진 환경에 서도 강건한 마커 검출 결과를 얻을 수 있다.