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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.

KIEM Final Report - A Roadmap to Developing Data Analytic Capability for Digital Transformation (KIEM.K23.01.081).

Radical programmes for developing the EU residential building sector

The economic recession has hit especially hard the residential building sector in the EU region, e.g., the number of the housing completions has decreased -49% and the total residential output has been squeezed down by -24% between 2007 and 2014 (Euroconstruct, 2015). In turn, the aim of our paper is to suggest a set of radical, novel programmes for developing the national residential building sectors within EU member countries up to 2025. We have applied the framework of strategic niche management (SNM) to the diagnoses of the current portfolios of the innovation, R&D programs in our two member country contexts. In the case of the Northern Finland, the prime example is Hiukkavaara, the largest district to be built in the City of Oulu. Homes will be constructed for 20,000 new residents. Hiukkavaara is a model for climate- conscious design in the northern hemisphere. Energy and materials are conserved, nature is valued and human beings adapt to their environment. One sub-programme involves Future Buildings and Renewable Energy Project. In the case of the Netherlands, the prime example is Energiesprong (Energy Leap), i.e., the innovation programme commissioned by the Dutch Ministry of the Interior. The aim is to make buildings energy-neutral and boost large-scale initiatives. The sub-programmes are targeting homes owned by housing associations, privately owned homes, office buildings, shops and care institutions. This programme is about ensuring new supply by encouraging companies to package a variety of technical sub-solutions, full services and financing options as well as about asking clients to put out tenders and ask for quotes in novel ways, with the government making changes to the rules and the regulations. Experiences on which the Dutch case in this paper focuses are sub-programmes for residential buildings, which include de Stroomversnelling, LALOG and Ons Huis Verdient Het. Based on the emerging Finnish and Dutch evidence, we are suggesting key elements to be incorporated into future national residential programmes within EU member countries on: (1) radical direction with balanced stakeholder groups, trustworthy advocates, contextual goal-setting and barriers management, (2) radical networking with entrepreneurial roles and causal links, novel expertise, transparent choices and digital platforms and (3) radical learning processes to arrive at better informed markets on user preferences, co-innovating, new rules and regulations, higher performance/price ratios, higher quality, new roles and responsibilities assignments.

International Business Matters

Phd Thesis Higher professional education aims to prepare graduates for the complexity of professional practices. The development of conceptual understanding is important to deal adequately with this complexity, especially in an unstructured professional domain such as international business. The aim of this dissertation is to investigate the concept conceptual understanding in this professional domain, how it can be measured, what it looks like, how it changes, and in what ways it differs between students. The dissertation comprises five empirical studies for which data collection took place at a university of applied sciences in the Netherlands.

Is government a right supervisor of the regulatory enforcement?

ABSTRACT. It is now generally accepted that the quality of the regulatory arrangements should be appraised not only by looking at the institutional design, but also by evaluating the factual enforcement and implementation of regulations. It is therefore advised that national governments take a more active stance in supervising the regulatory enforcement by different regulatory agencies. However, in some cases, government’s activism might be an impeding factor in regulatory enforcement. That this is not so crazy idea shows the analysis of the regulatory enforcement by Lithuanian Competition Authority in the area of competition policy during the years of integration to the European Union. For example, not only political and financial independence of the Competition Authority was difficult to establish, but also functions and competences of the regulatory agency were changed a number of times, which hampered the effectiveness of the agency’s performance while enforcing the competition law. In addition to often changes of functions, also the scope of competences was changing. As a result, the variety of tasks attributed to the Lithuanian Competition Authority caused the growing overload of work, which further hindered its regulatory practice. The question is who can be blamed for that? Was it just the inexperience of the government who was seeking for the best institutional design and could not stop with redesigning the regulatory agency or was it the intentional behaviour guided by some concrete interests as a result of a regulatory capture? The analysis of the regulatory enforcement during the period of 15 years does not allow for disregarding of the second possibility.

Accounting concepten in de circulaire economie

We zitten momenteel in een transitie-periode waarin we van een lineaire economie op basis van bestaande business modellen gericht op economische waarde maximalisatie toegaan naar een circulaire economie, waar business modellen streven naar waarde behoud. De volgende stap is de overgang naar een regeneratieve of restauratieve economie, waarin niet alleen economische waarde, maar ook ecologische en sociale waarde wordt gecreëerd (meervoudige waardecreatie). Vanuit accounting perspectief is een parallelle ontwikkeling zichtbaar. Ons huidige accounting systeem is met name gericht op economische waarde. Als gevolg van de transitie van een lineaire economie naar een circulaire economie, zijn er accounting modellen en frameworks in ontwikkeling gericht op meervoudige waardecreatie. De auteurs zijn echter van mening dat in de literatuur een cruciale gap bestaat tussen de ontwikkeling van accounting en meervoudige waardecreatie, en dat huidige modellen en frameworks gericht op meervoudige waarde vooral leiden tot ‘greenwashing’. In deze bijdrage gaan wij na in hoeverre de vigerende concepten van accounting bruikbaar zijn om te sturen op meervoudige waarde. Onder sturen wordt in dit kader bedoeld het bepalen, meten en waarderen. Dit doen wij aan de hand van een conceptuele analyse waarbij we de toepassing van de vigerende accounting concepten ten aanzien van profit vergelijken met mogelijke toepassing van deze concepten in relatie tot people en planet. Wij concluderen dat deze concepten over het algemeen niet toepasbaar zijn voor people en planet. Wij stellen daarom een alternatieve benadering voor, waarbij wij menen dat vigerende accounting concepten grotendeels toepasbaar zijn op people en planet. Dit is gebaseerd op een aanpak waarin het huidige ontologische uitgangspunt van accounting wordt verlaten en waarin we een aangepast ontologisch uitgangspunt verder uitwerken aan de hand van de Triple Depreciation Line (TDL) van Rambaud & Richard (2015). Tenslotte hebben we kritiekpunten geformuleerd op de TDL systematiek en stellen we een alternatieve TDL systematiek voor. Hiermee beoogt dit paper een bijdrage te leveren aan het inzichtelijk maken van de praktische en conceptuele problemen bij de toepassing van vigerende accounting concepten in een circulaire economie, om vervolgens mogelijke oplossingsrichtingen aan te reiken, gericht op bescherming, herstel en regeneratie van natuurlijk en sociaal kapitaal.