조영준 교수

The ability to monitor the respiratory rate, one of the vital signs, is extremely important for the medical treatment, healthcare and fitness sectors. In many situations, mobile methods, which allow users to undertake everyday activities, are required. However, current monitoring systems can be obtrusive, requiring users to wear respiration belts or nasal probes. Alternatively, contactless digital image sensor based remote-photoplethysmography (PPG) can be used. However, remote PPG requires an a

The results demonstrate the feasibility of using smartphone-based imaging for instant stress detection. Given that this approach does not need long-term measurements requiring attention and reduced mobility, we believe it is more suitable for mobile mental health care solutions in the wild.

We present RealPen, an augmented stylus for capacitive tablet screens that recreates the physical sensation of writing on paper with a pencil, ball-point pen or marker pen. The aim is to create a more engaging experience when writing on touch surfaces, such as screens of tablet computers. This is achieved by regenerating the friction-induced oscillation and sound of a real writing tool in contact with paper. To generate realistic tactile feedback, our algorithm analyzes the frequency spectrum of

We introduce Deep Thermal Imaging, a new approach for close-range automatic recognition of materials to enhance the understanding of people and ubiquitous technologies of their proximal environment. Our approach uses a low-cost mobile thermal camera integrated into a smartphone to capture thermal textures. A deep neural network classifies these textures into material types. This approach works effectively without the need for ambient light sources or direct contact with materials. Furthermore, t

Measurements and CFD simulations from four systems are compared using the air change index and a new Ventilation Parameter (VP). VP combined with thermal comfort and indoor air quality indices gives a good index for comparison of four systems. Impinging Jet is capable of achieving better air distribution in the space than the other systems (mixing, wall displacement and floor displacement) particularly at higher heat loads.

Automatically monitoring and quantifying stress-induced thermal dynamic information in real-world settings is an extremely important but challenging problem. In this paper, we explore whether we can use mobile thermal imaging to measure the rich physiological cues of mental stress that can be deduced from a person's nose temperature. To answer this question we build i) a framework for monitoring nasal thermal variable patterns continuously and ii) a novel set of thermal variability metrics to ca

Remote photo-plethysmography (rPPG) has emerged as a non-intrusive and promising physiological sensing capability in human–computer interface (HCI) research, gradually extending its applications in health-monitoring and clinical care contexts. With advanced machine learning models, recent datasets collected in real-world conditions have gradually enhanced the performance of rPPG methods in recovering heart-rate and heart-rate-variability metrics. However, the signal quality of reference ground-t

Mental stress is a critical problem in our modern society. This form of stress strongly affects our well being, and technology is needed to help us to manage health problems. The ability to automatically recognize a person's mental stress can be fundamental in supporting stress and health management. This research focuses on the use of mobile thermal imaging, a new and less explored sensor, to merge the measurement of multiple physiological signatures into one sensor and to build a reliable ment

본 연구에서는 장기적인 시계열을 완비하여 궁방전의 규모, 분포 및 변동 추이를 수량적으로 분석하였다. 궁방면세결총은 18세기말에서 20세기초에 이르기까지 단기적으로 파동을 보이면서도 장기적으로는 감소하는 추세에 있었다. 비영구존속궁에 비하여 영구존속궁의 면세결 보유 비중이 컸으며, 19세기 후반부터 더욱 커져갔다. 면세결의 구성에 있어서는 유토보다 무토의 비중이 지속적으로 커져서 압도적인 비중을 차지하게 되었는데, 이는 19세기에 들어 유토 매득을 위한 재원 확보가 어려워졌기 때문이다. 궁방면세결총의 감축을 추구하는 개혁이 왕실에 의해 간헐적으로 이루어졌으나, 근본적인 것이라기보다는 임시적이고 제한적인 것이었다. 19세기 중반까지는 전라도나 황해도에 많은 면세결이 분포하고 있었는데, 무토의 비중이 늘어나기 시작하면서 19세기 후반부터는 경기와 충청도의 비중이 늘어나게 되었다. 그 과정에서 특정 군현으로 면세결이 집중화되는 통폐합이 진행되었다. 출세결은 120년간의 장기에 걸쳐 상당히

This paper attempts to aggregate the total amount of sea tax during the King Yŏngjo era, especially 10 years after the enforcement of Kyunyŏkpŏp. Sea tax was composed of fishery tax, saltern tax, boat tax, and so forth. Fishery tax was imposed on fishing equipment, such as fishing net, fish pound, fish weir, and fish garth. Saltern tax was levied on several kinds of brine pans. Boat tax was enforced on each boat, ship, or vessel. The main results of the analysis are as follows. First, the value

The ability of sensing breathing Is becoming an increasingly important function for technology that aims at supporting both psychological and physical wellbeing. We demonstrate ThermSense, a new breathing sensing platform based on smartphone technology and low-cost thermal camera, which allows a user to measure his/her breathing pattern in a contact-free manner. With the designed key functions of Thermal Voxel Integration-based breathing estimation and respiration variability spectrogram (RVS, b

The proliferation of physiological sensors opens new opportunities to explore interactions, conduct experiments and evaluate the user experience with continuous monitoring of bodily functions. Commercial devices, however, can be costly or limit access to raw waveform data, while low-cost sensors are efforts-intensive to setup. To address these challenges, we introduce <i>PhysioKit</i>, an open-source, low-cost physiological computing toolkit. <i>PhysioKit</i> provides a one-stop pipeline consist

이 논문에서는 문헌에 기록된 조선시대 身長 정보를 망라적으로 수집하여 분석하였으며, 특히 두 가지 문제의 해결에 집중하였다. 첫째, 기존 연구에서는 16～17세기의 軍籍에서만 유용한 신장 정보를 확인하였을 뿐, 18～19세기에 대해서는 믿을 만한 정보를 얻지 못하였다. 이 논문에서는 다양한 자료를 추가로 발굴하여 소개하였으며, 특히 檢案으로부터 신장 정보를 취합하는 새로운 방법론을 시도함으로써, 18～19세기 신장 정보의 새로운 원천을 확보할 수 있었다. 둘째, 기존 연구에서는 신장 정보를 미터법으로 환산할 수 있는 믿을 만한 방법을 제시하지 못하였다. 이 논문에서는 호패 관련 자료를 조사하여 관련성을 검증함으로써, 종래 과학사학계에서 검토되었던 다섯 가지 척도가 아닌 속오군의 신장을 측정하는 척도가 따로 있었음을 명확히 하였고, 근대 이행기에는 황종척, 신조척 등의 척도가 병존하였음을 확인하였다. 이렇게 두 가지 문제의 해결에 다가감으로써, 군적이나 검안 등을 중심으로 한 조선시대