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Thermal comfort: research and practice

Thermal comfort -the state of mind, which expresses satisfaction with the thermal environment- is an important aspect of the building design process as modern man spends most of the day indoors. This paper reviews the developments in indoor thermal comfort research and practice since the second half of the 1990s, and groups these developments around two main themes; (i) thermal comfort models and standards, and (ii) advances in computerization. Within the first theme, the PMV-model (Predicted Mean Vote), created by Fanger in the late 1960s is discussed in the light of the emergence of models of adaptive thermal comfort. The adaptive models are based on adaptive opportunities of occupants and are related to options of personal control of the indoor climate and psychology and performance. Both models have been considered in the latest round of thermal comfort standard revisions. The second theme focuses on the ever increasing role played by computerization in thermal comfort research and practice, including sophisticated multi-segmental modeling and building performance simulation, transient thermal conditions and interactions, thermal manikins.

Textile And Fashion Design Considerations In A Digital Era

Fashion and textile practice transitioned over the past decade from a physically engaged design practice into a screen-based design practice with textiles simulated on digital bodies. Digital designers use tangible interaction with textiles for post-phenomenological design considerations. Our research indicates a complementary relationship between tangible interaction and drape observation, which allows for new approaches when considering textile materials. The drape observation based on drape measurement methods developed in textile science equips designers with a deeper material understanding. As the flat textile is placed in the scientific setup, the deformation and the designer's experience co-shape design considerations. The physical-to-digital paradigm shift disconnects designers from the tangible interaction with the textile. Fashion designers' approach contrasts with textile science methods to measure textile properties (needed to simulate textiles) and drape. Equipping designers with this understanding of textile technology requires interdisciplinary developments to make combined tangible drape tools accessible in physical and digital design spaces. Understanding design considerations in physical-digital practices and material drape, utilizing simulated textile properties, is essential for this endeavor. Cross-disciplinary understanding of textiles and similar soft materials between fashion designers, design researchers, textile and computer researchers, and cultural heritage researchers seems valuable in reducing measurement hurdles and creating tools to increase relationships between the physical and digital textiles and improving visual analyses and assessment of textiles. Our reflection to sharpen the post-phenomenological lens and cross-disciplinary collaborations of our past and future research contributes to understanding physical-digital textile design considerations and required cross-disciplinary interaction.

Reference points

We need mental and physical reference points. We need physical reference points such as signposts to show us which way to go, for example to the airport or the hospital, and we need reference points to show us where we are. Why? If you don’t know where you are, it’s quite a difficult job to find your way, thus landmarks and “lieux de memoire” play an important role in our lives.

The Future of Fabrics

Pneumatic Quasi-Passive Actuation for Soft Assistiva Lower Limbs Exoskeleton

CC-BY   Dit artikel is overgenomen van https://www.frontiersin.org/journals/neurorobotics There is a growing international interest in developing soft wearable robotic devices to improve mobility and daily life autonomy as well as for rehabilitation purposes. Usability, comfort and acceptance of such devices will affect their uptakes in mainstream daily life. The XoSoft EU project developed a modular soft lower-limb exoskeleton to assist people with low mobility impairments. This paper presents the bio-inspired design of a soft, modular exoskeleton for lower limb assistance based on pneumatic quasi-passive actuation. The design of a modular reconfigurable prototype and its performance are presented. This actuation centers on an active mechanical element to modulate the assistance generated by a traditional passive component, in this case an elastic belt. This study assesses the feasibility of this type of assistive device by evaluating the energetic outcomes on a healthy subject during a walking task. Human-exoskeleton interaction in relation to task-based biological power assistance and kinematics variations of the gait are evaluated. The resultant assistance, in terms of overall power ratio (Λ) between the exoskeleton and the assisted joint, was 26.6% for hip actuation, 9.3% for the knee and 12.6% for the ankle. The released maximum power supplied on each articulation, was 113.6% for the hip, 93.2% for the knee, and 150.8% for the ankle.

A Theoretical Framework and Conceptual Design for Engaging Children in Therapy at Home—The Design of a Wearable Breathing Trainer

Wearable technologies are being implemented in the health and medical context with increasing frequency. Such technologies offer valuable opportunities to stimulate self-management in these domains. In this context, engagement plays a crucial role. An engaged patient is a patient who is emotionally involved and committed to the therapy or care process. Particularly for children who have to follow some sort of therapy, engagement is important to ensure a successful outcome of the therapy. To design for engagement, a framework based on theories of motivation in child therapy was developed. This framework was applied to the design of a wearable breathing trainer for children with asthma and dysfunctional breathing. As such, the present paper provides knowledge about the implementation of theory on engagement and motivation in design. Expert and first user evaluations found that the resulting prototype is appealing, perceived as useful, and may engage children in breathing training and stimulate self-management. CC BY (https://creativecommons.org/licenses/by/4.0/)