• Journal of Society of Preventive Korean Medicine
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• v.26 no.1
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• pp.1-10
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• 2022

Objectives : The aim of this study was to introduce the development process of Korean medicine health promotion program for short stature children that is suitable for applied at public health center. Methods : The draft of health promotion program was developed through literature search of previous similar programs and advice of several experts. A small conference targeted public health Korean medicine doctors was also held to introduce the developed program and discuss for improvements. Results : The details of 12-week of Korean medicine health promotion program for children growth are as follows: 4-week of taking herbal medicines (Yukmijihwang-tang or Yukgunja-tang), contactless counseling with Korean medicine doctor, self-care home kit consisting of Sogeonjung-tang tea leaf, Sogeonjung-tang with Cervi Parvum Cornu extract, ear acupressure stick, finger chuna manual, growth diary, and jump rope. Conclusions : This health promotion program can help to increase the height of children and self-esteem of children with short stature as well as decrease the stress of parents.

• The Journal of Korea Robotics Society
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• v.16 no.2
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• pp.172-178
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• 2021

The COVID-19 pandemic has been reshaping the world by accelerating non-contact services and technologies in various domains. Hospitals as a healthcare system lie at the center of the dramatic change because of their fundamental roles: medical diagnosis and treatments. Leading experts in health, science, and technologies have predicted that robotics and artificial intelligence (AI) can drive such a hospital transformation. Accordingly, several government-led projects have been developed and started toward smarter hospitals, where robots and AI replace or support healthcare personnel, particularly in the diagnosis and non-surgical treatment procedures. This article inspects the remaining element of healthcare services, i.e., surgical treatment, focusing on evaluating whether or not currently available laparoscopic surgical robotic systems are sufficiently preparing for the era of post-COVID-19 when contactless is the new normal. Challenges and future directions towards an effective, fully non-contact surgery are identified and summarized, including remote surgery assistance, domain-expansion of robotic surgery, and seamless integration with smart operating rooms, followed by emphasis on robot tranining for surgical staff.

• Journal of Fashion Business
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• v.25 no.2
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• pp.34-50
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• 2021

As silver surfers'(older people who are good at surfing the Internet) SNS use and influence increase, SNS shopping channels are also favored as the major means of contactless shopping. The study analyzed the trends in fashion styles corresponding to taste on the SNS shopping channels with silver surfer women as the target. Even though the shopping channel was for people in their 50s and 60s, most of the design factors focused on casual styles and young taste rather than the formal and mature image. The material, trim, and patterns reflected a retro or formal factor but were also reinterpreted as a young image to show the various forms. The characteristics of the women's fashion styles for silver surfers on the SNS shopping channels can be summarized as follows. First, they chose items that portrayed a young image regardless of their age. The colors, materials, and patterns of the products also helped to create a young image. Second, there was a tendency to pursue various casual items. Silver surfer women chose practical, casual items because of their active lifestyle. Third, retro items were reinterpreted as young and trendy. Silver surfer women showed their retro tastes but preferred practical clothing with young images.

• Journal of the Korean Society of Clothing and Textiles
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• v.46 no.5
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• pp.741-759
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• 2022

This study examines the effect of live commerce characteristics on consumption behavior mediated by presence. As contactless shopping has become the new normal, live commerce is emerging as an innovative communication service between consumers and sellers. We examine the role of interaction and streamers' attributes on sharing and purchase intention by mediating social presence and telepresence. A web-based experiment was conducted to test our hypotheses. The data of 267 participants were analyzed using SPSS 23.0 and AMOS 21.0. The results showed that the Streamer-Consumer interaction had a positive effect on social presence and telepresence. By contrast, the Consumer-Consumer interaction had no significant effect on social presence and telepresence. We further found that streamer trustworthiness had a positive effect on both social presence and telepresence, while streamer attractiveness had a positive effect only on telepresence. Thus, social presence and telepresence positively influenced sharing and purchase intention. Overall, these findings illustrate that the Streamer-Consumer interaction and streamer trustworthiness are vital characteristics that lead to higher levels of presence using live commerce. Several academic and managerial implications are suggested based on these results.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.35 no.6
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• pp.610-615
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• 2022

BaTiO₃ is one of the ferroelectric materials with excellent dielectric properties such as high dielectric constant, low dielectric loss, and is widely used for the manufacturing of capacitors, piezoelectric converters, microsensors, and ferroelectric memories. Inkjet printing is a technology which uses digital and contactless methods which significantly improves flexibility associated with material and structural design, reducing manufacturing costs. Therefore, the top and bottom electrodes, BaTiO₃ ink, and photocurable resin were all printed by an inkjet to produce a BaTiO₃ capacitor. The properties of the printed thin film were analyzed. It was confirmed that the photocurable resin ink was well-infiltrated between the BaTiO₃ powder particles printed by inkjet. The dielectric properties of the capacitor such as dielectric constant which varies in accordance with frequency, polarization and tunability that changes with voltage, were measured.

• Proceedings of the Korean Society of Computer Information Conference
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• 2021.01a
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• pp.299-300
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• 2021

이른 새벽, 건설업 일용직 근로자들은 '오늘 일을 할 수 있을까?'란 불안감과 COVID-19의 감염 위험을 안고 인력사무소에 출근한다. 새벽 건설업 시장은 높은 업무 강도와 비효율적인 구인/구직 프로세스로 인해 진입장벽이 높고, 건설기능인력의 고령화로 불법체류 근로자 고용 등의 난항을 겪고 있다. 이에 따라 본 연구에서는 건설업 시장의 구인/구직 정보를 제공하여 앱 내에서 근로자 채용을 가능하게 하고, 외부 API를 사용하여 출퇴근 관리, 안전 이수증 촬영을 통한 인증 등 근로자와 구인자를 위한 비대면 구인/구직 앱 '인력거'를 개발하였다. '인력거' 앱을 통해 간소화된 구인/구직 프로세스 등을 통해 건설업에서 청년 일자리 증대가 기대된다.

• Proceedings of the Korea Water Resources Association Conference
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• 2022.05a
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• pp.24-24
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• 2022

토양 수분은 육상 생태계를 지배하는 핵심 변수로 널리 간주되어 왔다. 따라서 토양 수분을 모니터링하고 추정하는 것은 수문, 농업, 생화학적, 및 기후 역학을 평가하는 데 필수적이다. 그러나 최대 토양 접촉을 요구하는 기존의 토양 수분 모니터링 방법은, 토양 교란을 최소화하여 토양의 고유 특성을 보전하지 못하는 한계가 있다. 이 문제를 극복하기 위해 본 연구에서는 비접촉 초음파 시스템을 이용하여 토양 수분을 평가 방법을 개발하였다. 이 시스템은 공기-토양 조인트 절반 공간에서 누설 레일리파(Rayleigh wave)를 측정하도록 설계되었다. 토양 수분의 변화에 대한 누설 레일리파의 측정은 통제된 실험 설계에서 모래, 실트, 점토와 같은 세 가지 토양 유형에서 평가하였다. 본 연구 결과에서 세 가지 토양 사례 모두, 누설 레일리파의 에너지와 토양 수분 사이에 밀접한 관계가 있음을 보였다. 그러나 모래에서 얻은 동적 매개변수의 특성은 실트 및 점토의 특성과 다른 형태를 보였다. 이러한 결과는 미세한 토양 입자와 대조적으로 굵은 토양 입자는 증발 과정에서 감소된 토양 강도로 설명될 수 있다. 관측된 누설 레일리파에서 얻은 동적 매개변수를 기반으로 토양 수분을 평가하기 위해 랜덤 포레스트 모형을 이용하였다. 예측된 토양 수분의 정확도는 모든 데이터 및 토양 유형에 관계없이 높은 정확도를 보였다(R² ≥ 0.98, RMSE ≤ 0.0089 m³ m^-3). 즉, 본 연구에서는 레일리파가 토양 교란 없이 토양 수분 변화를 지속적으로 평가할 수 있는 큰 잠재력을 가지고 있음을 보여주었다.

• ETRI Journal
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• v.45 no.4
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• pp.603-614
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• 2023

Advancements in remote medical technologies and smart devices have led to expectations of contactless rehabilitation. Conventionally, rehabilitation requires clinicians to perform routine muscle function assessments with patients. However, assessment results are difficult to cross-reference owing to the lack of a gold standard. Thus, the application of remote smart rehabilitation systems is significantly hindered. This study analyzes the factors affecting the real-time evaluation of muscle function based on biometric sensor data so that we can provide a basis for a remote system. We acquired real clinical stroke patient data to identify the meaningful features associated with normal and abnormal musculature. We provide a system based on these emerging features that assesses muscle functionality in real time via streamed biometric signal data. A system view based on the amount of data, data processing speed, and feature proportions is provided to support the production of a rudimentary remote smart rehabilitation system.

• IEMEK Journal of Embedded Systems and Applications
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• v.18 no.6
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• pp.277-283
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• 2023

Vital signals provide essential information regarding the health status of individuals, thereby contributing to health management and medical research. Present monitoring methods, such as ECGs (Electrocardiograms) and smartwatches, demand proximity and fixed postures, which limit their applicability. To address this, Non-contact vital signal measurement methods, such as CW (Continuous-Wave) radar, have emerged as a solution. However, unwanted signal components and a stepwise processing approach lead to errors and limitations in heart rate detection. To overcome these issues, this study introduces an integrated neural network approach that combines noise removal, demodulation, and dominant-frequency detection into a unified process. The neural network employed for signal processing in this research adopts a MLP (Multi-Layer Perceptron) architecture, which analyzes the in-phase and quadrature signals collected within a specified time window, using two distinct input layers. The training of the neural network utilizes CW radar signals and reference heart rates obtained from the ECG. In the experimental evaluation, networks trained on different datasets were compared, and their performance was assessed based on loss and frequency accuracy. The proposed methodology exhibits substantial potential for achieving precise vital signals through non-contact measurements, effectively mitigating the limitations of existing methodologies.

• Asia pacific journal of information systems
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• v.32 no.1
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• pp.92-124
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• 2022

Providing services using kiosks is actively carried out between suppliers and consumers. These service processes have recently begun to play a dominant role in transactions. However, previous self-service technology (SST) studies or kiosks have not fully reflected the changing environment surrounding these different technologies. To cover the updated business environments, we combined qualitative and quantitative research methods. Through qualitative research and a review of previous studies, the variables emphasized as motivations and constraints for kiosks use and those that can be newly illuminated were selected for this study. We then applied the variables to the research model to assess their influence. In terms of the motivations for using kiosks, the results suggest that perceived usefulness and compatibility as service quality, forced use, and perceived service providers' efficiency as provider polices, absorptive capacity, and habit as an individual characteristic and social influence as a subjective norm have a significant effect on the attitude toward kiosks. In terms of constraints, difficult to use and need for interaction predicts the attitude toward kiosks. Attitude toward kiosks, perceived behavioral control, and social influence are directly related to the intention to use kiosks. Lastly, intention to use kiosks plays a significant role as an antecedent of revisit intention. Using these empirical results, we propose both academic and practical implications for future kiosks use.