Search results for " Manufacturing"
showing 10 items of 2018 documents
A systematic literature review of the transition to the circular economy in business organizations: Obstacles, catalysts and ambivalences
2021
There is a need for a transition from unsustainable linear business models to a more sustainable circular approach, called the circular economy. To promote this need, a deeper understanding of which issues hinder organizations’ transition to the circular economy and which ones catalyse it is needed. A systematic literature review was performed on the business implementation of the circular economy and 69 articles covering the topic were found. The review identifies different types of catalyst, obstacles and ambivalent factors influencing circular economy implementation in business. This study contributes to research on circular economy implementation at business organizations by providing u…
Los Mapas contables de gestión de las empresas cotizadas chilenas : análisis cualitativo
2017
espanolEl articulo analiza las clases de gestion realizadas por las empresas cotizadas chilenas localizadas en los espacios administrativos de Chile. La orientacion del analisis realizado considera que el factor cultural de la region donde estan localizadas las empresas chilenas condiciona la clase de gestion desarrollada por dichas empresas. El desarrollo de esta hipotesis se realiza aplicando la metodologia contable de los graficos radiales. Las tensiones existentes entre los periodos medios de maduracion representados en un grafico radial asumen la existencia de un factor cultural en las transacciones realizadas por las empresas en una region y supone que la toma de decision en un area t…
E-Fairs: a Cyber-Physical System for Aggregation and Economy of Scale in e-Commerce
2018
In recent years, the e-commerce arena has deeply changed because of the advent of new business models and the growing weight of huge global actors like Amazon. Some business models create competition between users, and the product price tends to rise (e.g., online auctions); other models, including group-buying, make users cooperate, and the price tends to go down. The present study extends the group-buying model and proposes a cyber-physical system called e-fair, in which both sellers and buyers are grouped to negotiate on a specific product or service. E-fairs minimize the global purchase price and the shipping resources respectively with the aggregation of demand and supply as well as or…
�ber den Einflu� der Verarbeitung und Konservierung auf Bek�mmlichkeit und N�hrwert der Nahrungsmittel
1951
Des haushaltsubliche Zubereiten der Nahrungsmittel wie Kochen, Braten usw. beeintrachtigt Nahrwert und Ausnutzbarkeit der Nahrung nur unwesentlich, verbessert sie vielmehr haufig sogar. Durch Masnahmen der Konservierung, vor allem Erhitzen unter Druck, kann es aber zu weitgehender Zerstorung von Nahrstoffen oder zu chemischen Verenderungen der Art kommen, das Nahrwert oder Verdaulichkeit wesentlich herabgesetzt werden. Dies wird an Hand von Beispielen in erster Linie bei Vitaminen und Eiweiskorpern gezeigt. Aus diesen Beispielen ergibt sich die grose Bedeutung, die einer schonenden und zweckmasigen Nahrungsmittelkonservierung zukommt. Optimale Methoden fur Zubereitung und Konservierung von …
Suppression of phase ambiguity in digital holography by using partial coherence or specimen rotation
2008
In this paper we present two approaches for extracting the surface profile as well as obtaining 3D imaging of near field objects by usage of partial coherence and digital holography. In the first approach a light source with given temporal partial coherence is used to illuminate a near field object. The reflected light is interfered with the reference source. By computing the local contrast of the generated fringes one may estimate the 3D topography and the profile of the object. This approach extracts the 3D information from a single image, and its accuracy does not depend on triangulation angle like in fringe projection methods. The second approach is tomography based. There we illuminate…
Awake Surgery: Skills of Neurosurgeon Matter but Those of Patient Too. How to Optimize Functional Brain Mapping by Improving Per-Operatory Testing?
2011
International audience; It is now possible to perform resections of slowgrowing tumors in awake patients. Using direct electrical stimulation (DES), real-time functional mapping of the brain can be used to prevent the resection of essential areas near the tumor. For now, simple clinical tests are performed on conscious patients and combined with DES in order to discriminate functional and non-functional areas invaded by the tumors. In this work we try to develop a simple device based on a simple technology to better quantify the performances of the patients during the surgery itself and give a real-time feedback to the neurosurgeon that will help to further guide the surgery by improving th…
Influence of compression sportswear on recovery and performance: A systematic review
2018
Compression garments are becoming increasingly popular among sportspeople who wish to improve performance and reduce their exercise discomfort and risk of injury. However, evidence for such effects is scarce. This paper presents the evidence following a review of the literature evaluating the effects of the application of compression garments on sports performance and recovery after exercise. The literature reviewed was the result of a search on the Web of Science, PubMed, and SPORTDiscus electronic databases for studies which analysed the effect of compression garments on physiological, psychological, and biomechanical parameters during and after exercise. These search criteria were met b…
Running thermoregulation effects using bioceramics versus polyester fibres socks
2020
The feet, covered by socks and shoes during running, undergo an increase of temperature. The aim of this study was to reduce heat generation in the feet of athletes during running by wearing novel thermoregulatory socks impregnated with bioceramic materials. Thirty male athletes ran a half-marathon (21.0975 km) wearing polyester based with bioceramic fibres (zirconium silicate and titanium oxide) and control socks (polyester). The average temperatures were measured with a thermographic camera (FLIR e60bx) before and after the run. Nine regions of interests were evaluated in the plantar surface and eight in the dorsum. Before running, the plantar region with the highest temperature was the …
Effects of a fatiguing run in popliteal vein flow using sports compression socks
2018
Introduction Although the use of sports compression socks is becoming more popular, there is still a lack of knowledge regarding the helpfulness of these garments for physical movement or sports use. One of the main effects attributed to the use of compression sock is the facilitation of venous blood flow return which is thought to improve performance and recovery. Methodology In this study, 10 trained runners performed 2 treadmill running tests for 30 min to 75% of their maximum aerobic speed, without sports socks (control) and with different sports compression socks. We measured popliteal vein flow volume before and after each test using magnetic resonance imaging. Results and discussion …
Beneficial Effect of Foot Plantar Stimulation in Gait Parameters in Individuals with Parkinson’s Disease
2020
New treatments based on peripheral stimulation of the sensory-motor system have shown to be promising in rehabilitation strategies for patients with neurological disorders, including Parkinson's disease (PD), especially in regards to reducing gait impairment, and hence, the incidence of falls. The aim of this study was to evaluate the change in several gait parameters measured by sensor inertial measurement in PD patients after acute plantar stimulation, under the distal phalanx of the big toe, and underneath the head of the first metatarsal joint of both feet, using a 3D printing insole. In order to assess whether the effects are selective for PD patients, we compared the effect of the tre…