• The Journal of Asian Finance, Economics and Business
• /
• 제8권1호
• /
• pp.395-405
• /
• 2021

The sophistication of technology information has led to a series of innovative activities in the economy, particularly in buying and selling products and services both conventionally and online. Currently online activities provide opportunities for customers to get the desired needs. The purpose of this research is to examine the effect of website quality, hedonic shopping motivation, and impulse buying on customers' satisfaction of online shopping in Indonesia. Eight online marketplaces are the focus of this research. This study uses a quantitative approach. This is a structural equation research with data obtained from 177 students through an online questionnaire using a five-point Likert scale; the selection criteria is having shopped online from various universities in Indonesia. The statistical testing tool used is SPSS 26.0, with the effect between variables determined using Partial Least Square (SmartPLS 3.0). The findings of this study indicate that the nine proposed hypotheses are accepted, positively and significantly, directly or indirectly, which are supported by previous research to reinforce the findings that have been found. The interesting attributes associated with this study are hedonic shopping motivation and impulse buying that mediate the relationship between website quality and customer satisfaction of online shopping in Indonesia's marketplace.

• 산업경영시스템학회지
• /
• 제46권4호
• /
• pp.209-217
• /
• 2023

In this study, the evaluation items related to the effectiveness evaluation of the LVC (Live, Virtual, Constructive) training system of the Air Force were derived and the weights of each item were analyzed. The LVC training system evaluation items for AHP (Analytic Hierarchy Process) analysis were divided into three layers, and according to the level, 3 items were derived at level 1, 11 items at level 2, and 33 items at level 3. For weight analysis of evaluation items, an AHP-based pairwise comparison questionnaire was conducted for Air Force experts related to the LVC training system. As a result of the survey, related items such as (1) Achievement of education and training goals (53.8%), (1.2) Large-scale mission and operational performance (25.5%), and (1.2.1) Teamwork among training participants (19.4%) was highly rated. Also, it was confirmed that the weights of evaluation items were not different for each expert group, that is, the priority for importance was evaluated in the same order between the policy department and the working department. Through these analysis results, it will be possible to use them as evaluation criteria for new LVC-related projects of the Air Force and selection of introduction systems.

• Structural Engineering and Mechanics
• /
• 제90권1호
• /
• pp.19-26
• /
• 2024

In recent years, an increasing number of experimental studies have shown that the practical application of mature active control systems requires consideration of robustness criteria in the design process, including the reduction of tracking errors, operational resistance to external disturbances, and measurement noise, as well as robustness and stability. Good uncertainty prediction is thus proposed to solve problems caused by poor parameter selection and to remove the effects of dynamic coupling between degrees of freedom (DOF) in nonlinear systems. To overcome the stability problem, this study develops an advanced adaptive predictive fuzzy controller, which not only solves the programming problem of determining system stability but also uses the law of linear matrix inequality (LMI) to modify the fuzzy problem. The following parameters are used to manipulate the fuzzy controller of the robotic system to improve its control performance. The simulations for system uncertainty in the controller design emphasized the use of acceleration feedback for practical reasons. The simulation results also show that the proposed H∞ controller has excellent performance and reliability, and the effectiveness of the LMI-based method is also recognized. Therefore, this dynamic control method is suitable for seismic protection of civil buildings. The objectives of this document are access to adequate, safe, and affordable housing and basic services, promotion of inclusive and sustainable urbanization, implementation of sustainable disaster-resilient construction, sustainable planning, and sustainable management of human settlements. Simulation results of linear and non-linear structures demonstrate the ability of this method to identify structures and their changes due to damage. Therefore, with the continuous development of artificial intelligence and fuzzy theory, it seems that this goal will be achieved in the near future.

• Physical Therapy Rehabilitation Science
• /
• 제13권2호
• /
• pp.152-162
• /
• 2024

Objective: This study was conducted to analyze the effect of wearable Electromyography-controlled functional electrical stimulation (EMG-controlled FES) System on Gait Function and cardiopulmonary metabolic efficiency during walking in older adults. Design: Cross-section study Methods: Total 22 older adult participants suitable to selection criteria of this study participated in this study. The EMG-controlled FES System, which functions as a wearable physical activity assist FES system was used. All participations performed randomly assigned two conditions (Non-FES assist [NFA], FES assist [FA]) of walking. In all conditions, spatio-temporal parameters and kinematics and kinetics parameters during walking was collected via 3D motion capture system and 6 minutes walking test (6MWT) and metabolic cost during walking and stairs climbing was collected via a portable metabolic device (COSMED K5, COSMED Srl, Roma, Italy). Results: In Spatio-temporal parameters aspects, The EMG-controlled FES system significantly improved gait functions measurements of older adults with sarcopenia at walking in comparison to the NFA condition (P<0.05). Hip, knee and ankle joint range of motion increased at walking in FA condition compared to the NFA condition (P<0.05). In the FA condition, moment and ground reaction force was changed like normal gait during walking of older adults in comparison to the NFA condition (P<0.05). The EMG-controlled FES system significantly reduced net cardiopulmonary metabolic energy cost, net energy expenditure measurement at stairs climbing (P<0.05). Conclusions: This study demonstrated that EMG-controlled FES is a potentially useful gait-assist system for improving gait function by making joint range of motion and moment properly.

• 한국안전학회지
• /
• 제35권6호
• /
• pp.15-24
• /
• 2020

With the development of the chemical industry, the chemical accident is increasing every year, thereby increasing the risk of accidents caused by chemicals. The Ministry of Environment provides the criteria for determining shelter-in-place or outdoor evacuation by material, duration of accident, and distance from the toxic substance leak. However, it is hard to say that the criteria for determining the transition point are not clear. Transition point mean the time that evacuation method is switched from shelter-in-place to outdoor evacuation. So, the purpose of this study was to calculate appropriate transition point by comparing the cumulative toxic load. Namdong-gu in Incheon Metropolitan City was finally selected as the target area, considering the current status of the population of Incheon Metropolitan City in 2016 and the statistical survey of chemicals in 2016. The target materials were HCl, HF, and NH₃. Modeling was simulated by ALOHA and performed assuming that the entire amount would be leaked for 10 min. Residents' evacuation scenarios were assumed to be shelter-in-place, immediate outdoor evacuation, and outdoor evacuation at an appropriate time after shelter-in-place. Based on the above method, the appropriate transition point from residents located in A(800 m away), B(1,200 m away), C(1,400 m away) and D(2,200 m away) was identified. In HCl, appropriate transition point was after 15 min, after 16 min, after 17 min, after 20 min in order by A, B, C and D. In HF, appropriate transition point was before 1 min or after 16 min, before 4 min or after 19 min, before 5 min or after 20 min, before 14 min or after 26 min in order by A, B, C and D. In NH₃, appropriate transition point at A was before 4 min or after 16. Others are not in chemical cloud. This study confirmed the transition point to minimize the cumulative toxic load can be obtained by quantitative method. Through this, it might be possible to select evacuation method quantitatively that cumulative toxic load are minimal. In addition, if the shelter-in-place is maintained without transition to outdoor evacuation, the cumulative toxic load will increase more than outdoor evacuation. Therefore, it was confirmed that actions to reduce the concentration of chemicals in the room were necessary, such as conducting ventilation after the chemical cloud passed through the site.

• 대한공업교육학회지
• /
• 제36권1호
• /
• pp.1-22
• /
• 2011

이 연구의 목적은 중학교 전기전자기술 영역의 활동 중심 STEM 교육프로그램을 개발하고 적용하는데 있었다. 이 통합교육프로그램은 과학, 기술, 공학, 수학 교과의 지식, 기능, 태도와 관련한 현실 세계에서의 문제해결에 초점을 맞추었다. 활동 중심 STEM 교육프로그램 개발은 준비, 개발, 개선의 3단계를 거쳐 진행되었다. 준비단계에서는, (1) STEM 교육프로그램 개발에 대한 학생, 교사, 사회의 요구 분석, (2) STEM 교육프로그램의 통합유형 선정, (3) 전기전자기술 영역의 전문교과 내용 분석, (4) 활동과제 선정 준거를 도출하였다. 개발단계에서는, (1) 전기전자기술 영역 STEM 교육프로그램의 활동과제 선정, (2) 활동과제별 교육목표 설정, (3) 활동분석 및 세부 활동 명료화, (4) 학습 내용 선정, (5) 학습내용 조직, (6) 수업목표 진술, (7) STEM 교육프로그램 내용 구성 및 작성이 이루어졌다. 개선단계에서는, (1) 전문가에 의한 타당도 검증, (2) 학생들에 의한 예비시험과 현장시험을 실행하여 STEM 교육프로그램을 수정 보완하였다. 개발한 활동 중심 STEM 교육프로그램을 S중학교 '방과후학교, 활동에 적용한 결과 학생들의 만족도가 높았으며, 인지적 정의적 영역의 긍정적인 변화가 있었고, 문제해결능력 함양에 긍정적인 효과가 있었다.

• 한국컴퓨터정보학회논문지
• /
• 제18권4호
• /
• pp.97-112
• /
• 2013

데이터의 품질은 효율적인 데이터 활용을 위한 가장 기본적인 전제이다. 수많은 연구와 사례를 통해 오류 데이터로 인한 손실과 그로 인한 문제점들이 대두되고 있고, 국가적으로는 데이터 품질 인증제도가 시행되고 있으나 데이터를 생성하고 관리해야 하는 조직 관점의 CTQ 데이터 선정 방법에 대한 연구는 극히 미흡한 상황이다. 본 모델은 조직에서 품질관리 대상이 되는 주요 CTQ 데이터를 선정하여 체계적으로 관리할 수 있도록 업무 및 IT측면의 CTQ 데이터의 기준을 수립하고 그에 따라 데이터를 선별하여 계량화 할 수 있게 있는 전사적 규모의 CTQ 데이터 관리 방법을 구체적으로 제시하였다. 이를 위해 SPSS를 활용하여 요인분석을 수행하고, 계량화를 위해 AHP 방법론을 사용하였다. 특히, DB 품질인증제도의 본격 시행에 따라 실무 적용에 용이하도록 CTQ-DSMM 모델을 활용한 조직 내 데이터 성숙도 관리 방안의 틀도 함께 제시하였다.

• Journal of Microbiology and Biotechnology
• /
• 제30권9호
• /
• pp.1404-1411
• /
• 2020

Lactic acid bacteria (LAB) play an important role in dairy fermentations, notably as cheese starter cultures. During the cheese production and ripening period, various enzymes from milk, rennet, starter cultures, and non-starter LABs are involved in flavor formation pathways, including glycolysis, proteolysis, and lipolysis. Among these three pathways, starter LABs are particularly related to amino acid degradation, presumably as the origins of major flavor compounds. Therefore, we used several enzymes as major criteria for the selection of starter bacteria with flavor-forming ability. Lactococcus lactis subsp. lactis LDTM6802 and Lactococcus lactis subsp. cremoris LDTM6803, isolated from Korean raw milk and cucumber kimchi, were confirmed by using multiplex PCR and characterized as starter bacteria. The combinations of starter bacteria were validated in a miniature Gouda-type cheese model. The flavor compounds of the tested miniature cheeses were analyzed and profiled by using an electronic nose. Compared to commercial industrial cheese starters, selected starter bacteria showed lower pH, and more variety in their flavor profile. These results demonstrated that LDTM6802 and LDTM6803 as starter bacteria have potent starter properties with a characteristic flavor-forming ability in cheese.

• 한국치위생학회지
• /
• 제24권3호
• /
• pp.197-208
• /
• 2024

연구목적: 확장현실 기술은 의료 교육의 대화형 프로세스를 통해 자기주도적 학습 향상의기회를 제공한다. 본 연구에서는 확장 현실 기술을 기반으로 한 교육 콘텐츠를 적용한 보건의료 분야의 연구 동향을 분석하고자 하였다. 연구방법: 선정기준에 따른 문헌 검색, 선정, 제외 과정을 통해 확장현실 기술을 활용한 국내 보건의료 연구를 분석하여 최종적으로 관련 문헌 39편을 선정 및 검토하였다. 연구결과: 의학, 치의학, 간호 등 다양한 분야에 걸쳐 확장현실이 적용된 것을 확인하였다. 학업만족도, 몰입도, 흥미 유발 등 긍정적인 효과와 함께 미디어 사용의 어려움 및 사이버 멀미 같은 문제가 관찰되었다. 결론: 향후 연구에서는 보건의료 분야의 다양한 교과 과정에 대한 콘텐츠 개발과 적용을 통한 교육적 접근과 기술의 지속적 발전이 필요하다.

• 한국식품위생안전성학회지
• /
• 제27권4호
• /
• pp.356-365
• /
• 2012

본 연구는 농식품의 안전성 확보 및 식중독 사고 발생 예방을 위한 연구의 일환으로 수행되었으며, 국내외의 자료를 조사하여 11가지 미생물학적 위해요소에 대해 리스크 프로파일 목록을 작성하여 추후 데이터베이스로 활용 될 수 있도록 하였다. 또한 국제 식품안전 관련 기관인 CODEX와 WHO/FAO 및 미국 일본 유럽 호주 뉴질랜드의 리스크 프로파일 선정 기준을 조사하고 국내 가용한 자료를 고려하여 식중독 원인균을 중심으로 관리의 기본이 되는 질병의 빈도와 심각성, 식품 소비 빈도, 교차오염 가능성의 세 가지 기준을 중심으로 관련 자료를 분석하였으며, 국내에서는 조사되고 있지 않으나 선진국에서 관리되고 있는 위해요소 중 앞으로 관리가 필요할 것으로 판단되는 요소를 고려하여 설정하였다. 우선순위는 발생빈도 및 위해도에 따라 세 그룹으로 나누었으며, 가장 집중적인 관리가 필요한 것으로 분석된 그룹 I에는 Norovirus, E.coli, Salmonella, Clostridium botulinum, Listeria monocytogenes를 선정하였고, 그룹 II에는 Vibrio parahaemolyticus, Staphylococcus aureus, Campylobacter jejuni, Bacillus cereus를 지정하였으며, Clostridium perfringens, Yersinia enterocolitica, Shigella spp, Cronobacter sakazakii, Hepatitis A virus를 그룹 III에 선정하였다. 본 연구에서 고려한 교차오염의 가능성은 정량화 되지 않은 '가능성'만을 염두에 두고 작성되었으며, 앞으로 농장의 GAP, HACCP을 적용하여 농식품의 수확에서부터 제품 생산 전 단계에 걸쳐 안전성이 확보된 제품을 생산할 수 있는 체계를 갖추어야 할 것이라 제안한다. 본 연구결과는 농식품의 식중독 예방과 'farm to table' 전 과정의 체계적인 위생관리시스템 도입을 위한 기초자료로 활용 될 수 있을 것이라 판단된다.