Loe Feijs

Eindhoven University of Technology | TUE · Department of Industrial Design

Connectedness is increasingly recognized as an important aspect of life and wellbeing. The technology-driven solutions aimed at fostering connectedness can also introduce negative pressure or influence when too much precise and real-time information is involved. There are also growing concerns regarding information security and privacy associated w...

Electrooculography-based Human-Computer Interaction (EOG-HCI) is an emerging field. Research in this domain aims to capture eye movement patterns by measuring the corneal-retinal potential difference. This enables translating eye movements into commands, facilitating human-computer interaction through eye movements. This paper reviews articles publ...

We describe the design and implementation of the Fashion Tech Farm (FTF), aimed at innovation in garments and fashion [1]. We describe our goals, the design principles, and the implementation. The design principles are rooted in an understanding of the fashion system, open networks, and entrepreneurial thinking. After four years we review three pro...

Recognizing pain in people with communicative disabilities is challenging. A support system detecting pain signals provides caregivers with information to intervene adequately. This study aims to develop a design for a user interface visualizing pain experiences for a signalling system intended for caregivers. Caregivers receive alerts, indicating...

We describe a novel approach for exploring, visualizing and modelling of complex textile structures. We show this approach in action for the exploration of weft-knitted spacer fabrics. The modelling tools are readily available and represent a fast-growing approach in communities of generative design. The approach helps solving the problem that spac...

For a small group of office workers who share the same workspace and the task load, leveraging their social skills and awareness could further increase their mutual awareness of each other’s work-related stress. This paper presents a case study of a one-week deployment of a shared, anonymous heart rate variability (HRV) data visualization system at...

In this manuscript we study single-line approximations and fractals based on the Apollonian gasket. The well-known Apollonian gasket is the limit case of configurations of kissing circles. Rather than plotting the circles as discs on a differently colored background (the traditional representation), we draw all circles as one line without lifting t...

In this paper, the investigation on the occurrence of cyanosis’s blue colouration in newborn babies will be focused on a more detailed version of the oxyhaemoglobin’s (HbO2) and deoxyhaemoglobin’s (Hb) transmission and reflectance spectrum in the blood vessel. A quantitative analysis of cyanosis colour is based on the theory of an observer model of...

Liquid-based perinatal life support (PLS) technology will probably be applied in a first-in-human study within the next decade. Research and development of PLS technology should not only address technical issues, but also consider socio-ethical and legal aspects, its application area, and the corresponding design implications. This paper represents...

Augmented Reality serious games have become an emerging solution to positively influence the learning experience for children born in the digital age. However, systematic and empirically tested design guidelines for AR serious games remain largely unexplored. In this study, we investigated the design guidelines by designing and developing four AR s...

With the rapidly increasing penetration of touchscreens in various application sectors, more sophisticated and configurable haptic effects can be rendered on touchscreens (e.g., buttons). In this paper, we presented a design process to instantiate a wide range of vibrotactile stimuli for rendering various virtual buttons on touchscreens. We study t...

Slow breathing guiding applications increasingly emerge, showing promise for helping knowledge workers to better cope with workaday stress. However, standard breathing guidance is non-interactive, with rigid paces. Despite their effects being proved, they could cause respiratory fatigue, or lack of training motivation, especially for novice users....

There are different ways to deliver Cognitive Behavioral Therapy for Insomnia (CBT-I), of which in-person (face to face) is the traditional delivery method. However, the scalability of in-person therapy is low. Digital Cognitive Behavioral Therapy for Insomnia (dCBT-I) is an alternative and there are tools on the market that are validated in clinic...

Mondrian was one of the most significant painters of the 20th century. He was a prominent member of DeStijl, the movement which revolutionized art by setting it free of the obligation to make images of existing objects, persons, or situations. DeStijl was one of the interrelated movements in early 20th century Europe including Cubism, Constructivis...

Design games are rarely used to design shoes but data and emerging digital fabrication systems are rapidly changing how designers make things. We envision a near future where shoes are personalised using algorithmic, parametric, and generative systems that are data-driven. In this article, we describe and deploy a design game for shoes to help desi...

Pain is a common occurrence in life. For some groups of people expressing, communicating, and seeking pain relief is not possible, due to age, illness, disability, or unconsciousness. To support caregivers, pain detection through physiological measures can be a solution. Currently, an algorithm for an application indicating arousal according to ele...

Results: The methods' heart rate variability and electroencephalogram show clear and consistent results as acute pain assessment. Magnetic resonance imaging can measure chronic pain. Ordered by invasiveness and vulnerability, a trend shows that the invasive methods are used more with less vulnerable subjects. Only instruments used for skin conduct...

A high fidelity baby manikin with a colour changing mechanism is required for medical training, especially for cyanosis skin colouration assessment in a newborn baby. However, commercially available baby manikin simulators do not have the real colour-change of cyanosis skin. The efforts in increasing the fidelity of the manikin might improve the ac...

With the development of sensing technology and the popularization of quantified-self devices, there are increasing types of health-related data that can be sensed, visualized and presented to the user. However, most existing quantified-self applications are designed to support self-management and self-reflection; only a few studies so far have inve...

Being independent to dress or undress is important for everybody. However, (un)zipping to (un)dress is a task that is difficult for elders, especially when the zipper is in a hard-to-reach location. This paper presents the invention of Cliff: an automatized zipper and a user study performed to evaluate the wearability and how useful it is to the el...

INTRODUCTION: Quantified-self application is widely used in sports and health management; the type and amount of data that can be detected and fed back to the user are growing rapidly. However, only a few studies discussed the social attributes of quantified-self data, especially in the context of cycling. OBJECTIVES: To design and evaluate SocialB...

Quantified-self application is widely used in sports and health management; the type and amount of data that can be fed back to the user are growing rapidly. However, only a few studies discussed the social attributes of quantified-self data, especially in the context of cycling. In this study, we present “SocialBike,” a digital augmented bicycle t...

This paper shows an experimental simulation system that simulates the experience of social cycling in the process of design research. The system has been used in two iterative studies to evaluate different design concepts related to cycling and social interaction. We introduce the build and implementation of the simulation system and discuss the ro...

We aimed at reducing alarm fatigue in neonatal intensive care units by developing a model using machine learning for the early prediction of critical cardiorespiratory alarms. During this study in over 34,000 patient monitoring hours in 55 infants 278,000 advisory (yellow) and 70,000 critical (red) alarms occurred. Vital signs including the heart r...

Augmented reality game-based learning has become an emerging trend in the field of education as it has the potential to increase children's learning motivation for subjects such as mathematics. However, to achieve the benefits for children effectively, AR serious games need to be appropriately designed, especially in respect to their novel interact...

Through a literature review, we explore fantasy in serious games, the function of fantasy, and what contributes to fantasy. This research firstly regards fantasy as a game characteristic, focusing on the definition of fantasy in games. We find two directions: Mental activities and Artifacts. We construct a taxonomy of fantasy from multiple aspects....

Excessive workplace stress affects the individual’s health as well as social collaborations, so the management of stressors is essential. However, an individual worker who only subjectively reflects on his or her individual and social stressors may misinterpret them, and thus not be able to manage them. This paper aims at engaging workplace stress...

The lack of real innovation is one of the problems the fashion system suffers from. But there is so much interesting mathematics available now, with such deep meanings, that it is a shame not to exploit it, or at least seriously try. We are interested in the aesthetic reasons, finding new forms and exploiting new types of algorithmic approaches, mi...

In this position paper, we discuss the role of smart garments for stress reduction. Stress management plays a vital role in healthy living. Stress is an essential component of human life, but too much of it is a risk factor contributing to problems with concentration and a wide variety of illnesses including hypertension, heart problems, disorders...

This study in preterm infants was designed to characterize the prognostic potential of several features of heart rate variability (HRV), respiration, and (infant) motion for the predictive monitoring of late-onset sepsis (LOS). In a neonatal intensive care setting, the cardiorespiratory waveforms of infants with blood-culture positive LOS were anal...

Augmented Reality is becoming an emerging trend in the development of play-and-learn experience and increasingly accessible to children. However, there is a lack of understanding of how to design AR games to effectively improve children's learning experience, especially with respect to the novel interaction and representation paradigms that AR affo...

In this paper, we present the design, prototyping and implementation of i-Ribbon—a wearable device designed to support weight loss through digitally-augmented social expression. Starting with an Obesity Awareness Ribbon, we introduced the exploration process and formation of the i-Ribbon concept. Prototypes of different fidelity were built during t...

Analyzing heart rate variability (HRV) in preterm infants can help track maturational changes and subclinical signatures of disease. We conducted an observational study to characterize the effect of demographic and cardiorespiratory factors on three features of HRV using a linear mixed-effects model. HRV-features were tailored to capture the unique...

Objective: To determine the feasibility of unobtrusively monitoring the respiratory rate (RR) in preterm infants by using a film-like pressure sensor placed between the mattress and the bedding. Approach: The RR was simultaneously measured by processing the chest impedance (CI) and the ballistographic (BSG) signal acquired from the pressure sensor...

The paintings of Piet Mondrian have been attractive for programmers and researchers writing programs that produce compositions resembling the originals. In earlier work published in Leonardo, a generic framework was proposed, which turned out flexible and could be adapted to generate many different Mondrian types. Until recently, there were hardly...

Background The subtle communicative behaviour of individuals with visual and severe/profound intellectual disabilities hinders the success of their interaction with professional caregivers. The bioresponse system, a tool to raise caregivers' awareness of the client's communicative behaviour, may improve the client's joint attention behaviour and th...

Neonatal patient simulators (NPS) are artificial patient surrogates used in the context of medical simulation training. Neonatologists and nursing staff practice clinical interventions such as chest compressions to ensure patient survival in the case of bradycardia or cardiac arrest. The simulators used currently are of low physical fidelity and th...

In this chapter, we investigate the extent to which the real-time bidirectional exchange of activity information can influence context-awareness, social presence, social connectedness, and importantly interpersonal activity synchrony in mediated ambient assisted living (AAL) environments. Additionally, we describe the design, development, and asses...

Insomnia is a medical condition with high prevalence and negative impact on quality of life. As a part of various therapies, sleep diaries are used as a tool for diagnosis and patient self-management. Traditional diaries are essentially paper forms, which are cumbersome, error-prone and time-consuming. Application (app) based diaries have been prop...

New technologies are increasingly evaluated for use within the clinical practice to monitor patients’ medical and lifestyle data. This development could contribute to a more personalized approach to patient care and potentially improve health outcomes. To date, patient perspective on this development has mostly been neglected in the literature. Hen...

Cliff is a project which aims to develop an automatized zipper for the zipping and unzipping process. The focus of this study is to visualize the evolution trends of the zipper (slide fastener) since its first invention back in 1851 to 2017. The patent analysis was performed to develop the evolution map based in advance invention. The search has be...

Continuously monitoring body movement in preterm infants can have important clinical applications since changes in movement-patterns can be a significant marker for clinical deteriorations including the onset of sepsis, seizures, and apneas. This paper proposes a system and method to monitor body movement of preterm infants in a clinical environmen...

This paper reports on the realistic color generation and color change due to cyanosis which refers to the blue coloration around the lips’ area. The design requirements for the manikin were identified based on the color measurement and corrections of cyanosis in images of real babies. The classification of the literature study is according to physi...

Cliff is a project which aims to develop an automatized zipper for the zipping and unzipping process. It is a response to the struggle by the elderly, people with physical disabilities and, ladies who have problems zipping back-zipper dresses. An iterative research through design approach was applied [1] to develop a working mechanism and prototype...

Background: Mainly due to an increase in stress-related health problems and driven by recent technological advances in biosensors, microelectronics, computing platform, and human-computer interaction, ubiquitous physiological information will potentially transform the role of biofeedback in clinical treatment. Such technology is also likely to prov...

An accurate assessment of the bluish discoloration of cyanosis in the newborn baby’s skin is essential for the doctors when making a comprehensive evaluation or a treatment decision. To date, midwives employ the score of APGAR to note any occurrence of discoloration on skin among newborn babies. However, there is still no known general method to au...

Recent behaviour change research often includes quantified elements such as level of activity and location to provide a personalised behaviour change intervention. Context information is important to improve the effectiveness of interventions. For working environments, existing human behaviour trackers lack the resolution for indoor monitoring; res...

Light is a common ambient medium to express additional information in a peripheral and calm way, but it is also an environmental stimulant to create atmosphere, evoke moods, and provide immersive experiences. Through the design of the DeLight system, we aim to establish a biofeedback-driven lighting environment that informs users about their stress...

We design a 3D surface made by continuous deformation applied to a single tile. The contour edges are aligned according to the network topology of a Pied-de-poule tessellation. In a classical tessellation, each edge is aligned with a matching edge of a neighbouring tile, but here the single tile acts as a neighbouring tile too. The continuous defor...

Biofeedback systems enable the users’ awareness of their internal health status by displaying their physiological signal, and further facilitate them to move toward self-regulation and behaviour change. Single-modal biofeedback display can provide clear yet less engaging physiological information; a multimodal, immersive display could provide more...

Aim To investigate the effects of a swaddling device known as the Hugsy (Hugsy, Eindhoven, Netherlands) towards improving autonomic regulation. This device can be used both in the incubator and during Kangaroo care to absorb parental scent and warmth. After Kangaroo care, these stimuli can continue to be experienced by infants while in the incubato...

Background and purpose: To investigate whether Kangaroo care (KC) influences the salivary oxytocin (OT) concentration in preterm infants, and which correlates affect the OT response. Methods: Eleven twin pairs participated in a study in which we collected saliva using cotton swabs twice a day, once during KC and once during baseline conditions (...

Insomnia is a prevalent sleep disorder, characterized by problems with sleep initiation, and/or sleep maintenance. Cognitive Behavioral Therapy for Insomnia (CBT-I) is the current standard intervention. The labor-intensive nature of CBT-I hampers its scalability. Digital CBT-I could be an alternative solution, but the therapeutic feedback is too ge...

In this paper, we discuss the Affective Respiration Device, its rationale and elaborate a few lessons learned from our attempt to embed this technology in the flow of everyday life. The device captures the respiratory behaviour of its viewer and provides bio-feedback and feedforward that enables people to come to terms with their breathing and acti...

Unwind is a musical biofeedback interface which combines nature sounds and sedative music into a form of New-Age music for relaxation exercises. The nature sounds respond to the user’s physiological data, functioning as an informative layer for biofeedback display. The sedative music aims to induce calmness and evoke positive emotions. UnWind incor...

Over the last decade, the adoption of open API standards offers new services meaningful in the domain of health informatics and behavior change. We present our privacy-oriented solution to support personal data collection, distribution, and usage. Given the new General Data Protection Regulations in Europe, the proposed platform is designed with re...

Background: While numerous positive effects of Kangaroo care (KC) have been reported, the duration that parents can spend kangarooing is often limited. Aim: To investigate whether a mattress that aims to mimic breathing motion and the sounds of heartbeats (BabyBe GMBH, Stuttgart, Germany) can simulate aspects of KC in preterm infants as measured...