• 무역상무연구
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• 제71권
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• pp.325-350
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• 2016

As the new competitive environment become more global, technologically oriented and customer driven, as customers continually demand higher quality, faster response, and greater reliability of products and services, the new global market demands a more customer responsive behaviour by companies and firms have responded with innovative products and improved manufacturing processes to manufacture products. Further, the shift from traditional manufacturing and purchasing to JIT manufacturing and purchasing requires customers and suppliers to shift from adversarial relationships to strategic partnerships, and information sharing, so as to attain flexibility, reliability, and speed. SCM practices such as supplier collaboration and information sharing is considered as a key to attaining supplier network responsiveness and enhancing the product innovation and the market access time. The current research investigates the effect of SCM practices on supplier network responsiveness, the product innovation and the market access time of export companies. Thus by providing empirical evidence of the said relationships, this study offers useful guidelines for measuring and improving the supplier network responsiveness of a firm, facilitating further research in the area.

• 한국의류학회지
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• 제34권1호
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• pp.1-13
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• 2010

This study analyzes the innovation process of the value chain in the fashion industry. It examines the differences between traditional and FF-based methods that include value chain processes such as design, production, and distribution-sales process. In the literature review and case studies, general propositions were drawn from each innovative stage by a comparison analysis. First, design speed is the main factor to explain the impact of IT in the design process. Second, small quantity batch production becomes main stream by the adoption of a computer-integrated manufacturing system in the production process. Third, cost reduction and speedup improvement are results of innovation in the distribution process. Last, a customized interface provides important information that can integrate the value chain and make useful customer relationships in the sales process. Fast fashion is the best product of these procedural innovations in the overall value chain. Consequently, this study confirmed that the general propositions referred above were acceptable and adaptable in the case of ZARA in terms of fast fashion strategy.

• 대한의용생체공학회:의공학회지
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• 제42권6호
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• pp.259-267
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• 2021

Recently, the market for personal health care and medical devices based on Bluetooth Low Energy(BLE) has grown rapidly. BLE is being used in various medical data communication devices based on low power consumption and universal compatibility. However, since data errors occurring in the transmission of medical data can lead to medical accidents, it is necessary to analyze the causes of errors and study methods to reduce data error. In this paper, the minimum communication speed to be used in medical devices was set to at least 800 byte/sec based on the wireless electrocardiography regulations of the Ministry of Food and Drug Safety. And the data loss rate was tested when data was transmitted at a speed higher than 800 byte/sec. The factors that cause communication data error were classified, and the relationship between each factor and the data error rate was analyzed through experiments. When there were two or more activated peripherals connected to the central, data error occurred due to channel hopping and bottleneck, and the data error rate increased in proportion to the communication distance and the number of activated peripherals. Through this experiment, when the BLE is used in a medical device that intermittently transmits biosignal data, the risk of a medical accident is predicted to be low if the number of peripherals is 3 or less. But, it was determined that BLE would not be suitable for the development of a biosignal measuring device that must be continuously transmitted in real time, such as an electrocardiogram.

• 정보학연구
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• 제4권3호
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• pp.155-163
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• 2001

디지털 신경회로망의 구현에 있어 시그모이드 함수의 구현은 매우 복잡하고 구현하기 어렵다. 따라서, 본 논문에서는 디지털 신경회로망 구현에 문제가 되는 시그모이드 함수처리를 위한 설계 방법을 제안하였다. 제안된 방법은 잉여수계를 이용하여 MAC(Multiplier and Accumulator) 연산 시, 캐리 전파 없이 고속의 연산을 수행할 수 있고 시그모이드 함수처리를 고속으로 수행할 수 있다. 모의실험결과, 각각의 신경 프로세스에 있어서 4.6nsec 이상의 속도를 보임으로써 고속디지털 신경회로망 구현에 적용될 수 있을 것으로 기대된다.

• 한국ITS학회 논문지
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• 제22권1호
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• pp.93-102
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• 2023

본 연구는 운전자에게 차량속도와 횡단보도 인근 보행자 존재 유무에 대한 정보를 제공하는 차량정보안내시스템의 설치 전·후에 대한 효과평가를 수행했다. 시나리오는 운전자에게 정보를 제공하지 않는 경우(S1), 차량주행속도만 제공하였을 경우(S2), 횡단보도에 보행자의 존재 유무와 차량주행속도를 모두 제공하였을 경우(S3) 등 3가지로 구성했다. 조사결과 시나리오 S1보다 운전자에게 정보를 제공하는 S2, S3에서 차량의 속도감속률이 약 0.4~0.7km 큰 것으로 나타났다. 또한 시나리오 S3에서 횡단보도 인근에 보행자가 있는 경우에 없는 경우보다 속도 감속률이 0.2km 높아 차량 속도를 더 줄이는 것으로 나타났다. 통계분석 결과에서도 시나리오 3개에 대한 평균 차량의 속도감속률에 차이가 있는 것으로 분석됐고, 보행자가 있는 경우 속도 감속률이 큰 것으로 나타났다.

• 대한인간공학회지
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• 제36권5호
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• pp.395-409
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• 2017

Objective: The purpose of this study was to optimize the number and positions of foot pressure sensors using the reliability analysis of the center of pressure (COP) in smart shoes. Background: Foot pressure can be different according to foot region, and it is important which region of the foot pressure needs to be measured. Method: Thirty adults (age: $20.5{\pm}1.8years$, body weight: $71.4{\pm}6.5kg$, height: $1.76{\pm}0.04m$) participated in this study. The foot pressure data were collected using the insole of Pedar-X system (Novel GmbH, USA) with a sampling frequency of 100Hz during 1.3m/s speed walking on the treadmill (Instrumented treadmill, Bertec, USA). The intraclass correlation coefficients (ICC) were calculated between the COP positions using 4, 5, 6, 7, 8, and 99 sensors, while one-way repeated measure ANOVA was performed between the standard deviation (SD) of the COP positions. Results: The medio-lateral (M/L) COP position using 99 sensors was positively correlated with the M/L COP positions using 6, 7, and 8 sensors; however, it was not correlated with the M/L COP positions using 4 and 5 sensors during landing phase (1~4%) (p<.05). The antero-posterior (A/P) COP position using 99 sensors was positively correlated with the A/P COP positions using 4, 5, 6, 7, and 8 sensors (p<.05). The SD of the COP position using 99 sensors was smaller than the SD of the M/L COP positions using 4, 5, 6, 7, and 8 sensors (p<.05). Conclusion: Based on our findings, it is desirable to arrange at least 6 sensors in smart shoes. Application: The study of optimizing the number and positions of foot pressure sensors would contribute to developing more effective smart shoes using foot pressure technology.

• 자원ㆍ환경경제연구
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• 제31권4호
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• pp.481-503
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• 2022

본 연구는 환경혁신이 환경친화적 제품의 수출에 미치는 영향을 동태패널모형을 이용하여 분석한다. 분석결과 환경친화적 제품의 수출은 장기 균형에 느리게 수렴하는 동태적 조정 과정이 있는 것으로 분석되었다. 또한 환경혁신으로 대표되는 환경 부문의 민간 특허와 환경관련 공공 R&D 지출의 경우 환경친화적 수출에 긍정적인 효과가 있는 것으로 나타났다. 구체적으로 환경친화적 제품은 자원 관리, 오염 관리, 청정 기술 부문의 제품으로 분류되어 있는데, 특허의 경우 자원 관리 부문의 수출에, R&D 지출의 경우 모든 부문의 수출에 기여하는 것으로 나타났다. 동태효과에 대한 추정결과 환경혁신의 수출 증진 효과는 장기로 갈수록 크게 나타났으며, 공공 부문의 환경혁신이 민간 부문의 환경혁신에 비해 수출에 더 크게 기여하는 것으로 나타났다.

• 디지털콘텐츠학회 논문지
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• 제14권3호
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• pp.291-301
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• 2013

본 연구는 LTE 스마트폰의 수용에 영향을 미치는 요인을 도출하기 위한 연구이다. LTE 스마트폰의 수용에 영향을 미치는 요인을 살펴보기 위해 확장된 기술수용모델을 사용하였으며, 변수는 선행연구를 고찰하여 LTE의 특징변수와 개인적인 특징에 관한 변수를 선정하였다. 본 연구는 설문조사를 통해 이루어졌으며, 설문대상은 LTE 스마트폰의 주 사용자 층을 감안하여 20대를 위주로 분석하였다. 연구결과, LTE 스마트폰의 수용에 영향을 미치는 요인은 개인의 혁신성, 속도, 가격 요인으로 나타났다. 본 연구결과를 토대로 향후 마케팅 전략을 입안함에 있어 속도뿐만이 아닌 개인의 혁신성 및 가격에 관한 사항을 자극할 수 있는 요소가 추가되어진다면 더욱 의미 있고 효과적인 마케팅 결과를 도출할 수 있으리라 판단된다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제17권3호
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• pp.840-860
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• 2023

Aiming at the serious occlusion and slow tracking speed in pedestrian target tracking and recognition in complex scenes, a target tracking method based on improved YOLO v5 combined with Deep SORT is proposed. By merging the attention mechanism ECA-Net with the Neck part of the YOLO v5 network, using the CIoU loss function and the method of CIoU non-maximum value suppression, connecting the Deep SORT model using Shuffle Net V2 as the appearance feature extraction network to achieve lightweight and fast speed tracking and the purpose of improving tracking under occlusion. A large number of experiments show that the improved YOLO v5 increases the average precision by 1.3% compared with other algorithms. The improved tracking model, MOTA reaches 54.3% on the MOT17 pedestrian tracking data, and the tracking accuracy is 3.7% higher than the related algorithms and The model presented in this paper improves the FPS by nearly 5 on the fps indicator.

• Environmental Engineering Research
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• 제14권3호
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• pp.170-173
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• 2009

This study examined the special technique of photocatalytic degradation (RPODisk) for removal of taste and odor causing materials, algae, and algal toxin. The RPODisk was effective for removal of these troublesome contaminants. It outperformed the fixed media and the UV irradiation for geosmin removal. The RPODisk performance was comparable to the combination of the UV irradiation with TiO2. The RPODisk performance was affected by the rotating speed. The faster the speed was, the better the performance. The RPODisk was also effective for removal of algae and algal toxin. The algal activity reduced by 80% after 30 mins of the treatment. More toxic microcystin (MC)-LR was more difficult to remove than MC-RR. The times for 50% removal were 23.7 mins for MC-LR and 14.1 mins for MC-RR. Almost 100 mins of the contact time was required to completely remove MC-LR at the rotating speed of 260 rpm.