Management de la qualitévignette|La roue de Deming illustre le processus d'amélioration continue, l'un des principes fondamentaux du management de la qualité. Le management de la qualité, ou gestion de la qualité, est une discipline du management regroupant l'ensemble des concepts et méthodes visant à satisfaire les clients d'un organisme (en général les entreprises, associations, organismes publics) et à fournir des produits et services correspondant à leurs attentes.
Obstructive sleep apneaObstructive sleep apnea (OSA) is the most common sleep-related breathing disorder and is characterized by recurrent episodes of complete or partial obstruction of the upper airway leading to reduced or absent breathing during sleep. These episodes are termed "apneas" with complete or near-complete cessation of breathing, or "hypopneas" when the reduction in breathing is partial. In either case, a fall in blood oxygen saturation, a disruption in sleep, or both, may result.
Sleep in animalsSleep in animals refers to a behavioral and physiological state characterized by altered consciousness, reduced responsiveness to external stimuli, and homeostatic regulation observed in various animals. Sleep has been observed in mammals, birds, reptiles, amphibians, and some fish, and, in some form, in insects and even in simpler animals such as nematodes. The internal circadian clock promotes sleep at night for diurnal organisms (such as humans) and in the day for nocturnal organisms (such as rodents).
ChronotypeLe chronotype est une manifestation du rythme circadien qui définit la préférence d’une personne pour des activités plus matinales ou plus vespérales (du soir), notamment l’heure de coucher et de lever. Ainsi, certains individus ont tendance à se lever plus tôt, avoir plus d’énergie et de concentration pour des activités matinales, alors que d’autres préfèrent décaler leur réveil et prévoir leurs activités importantes davantage vers la fin de la journée.
Stage lightingStage lighting is the craft of lighting as it applies to the production of theater, dance, opera, and other performance arts. Several different types of stage lighting instruments are used in this discipline. In addition to basic lighting, modern stage lighting can also include special effects, such as lasers and fog machines. People who work on stage lighting are commonly referred to as lighting technicians or lighting designers. The equipment used for stage lighting (e.g.
Quality (business)In business, engineering, and manufacturing, quality – or high quality – has a pragmatic interpretation as the non-inferiority or superiority of something (goods or services); it is also defined as being suitable for the intended purpose (fitness for purpose) while satisfying customer expectations. Quality is a perceptual, conditional, and somewhat subjective attribute and may be understood differently by different people. Consumers may focus on the specification quality of a product/service, or how it compares to competitors in the marketplace.
Landscape lightingLandscape lighting or garden lighting refers to the use of outdoor illumination of private gardens and public landscapes; for the enhancement and purposes of safety, nighttime aesthetics, accessibility, security, recreation and sports, and social and event uses. Light pollution exacerbated by excessive, misdirected or obtrusive use of light, but even carefully used light fundamentally alters natural conditions. As a major side-effect of urbanization, it is blamed for compromising health, disrupting ecosystems and spoiling aesthetic environments.
Solid-state lightingSolid-state lighting (SSL) is a type of lighting that uses semiconductor light-emitting diodes (LEDs), organic light-emitting diodes (OLED), or polymer light-emitting diodes (PLED) as sources of illumination rather than electrical filaments, plasma (used in arc lamps such as fluorescent lamps), or gas. Solid state electroluminescence is used in SSL, as opposed to incandescent bulbs (which use thermal radiation) or fluorescent tubes. Compared to incandescent lighting, SSL creates visible light with reduced heat generation and less energy dissipation.
Projecteur (spectacle)Le projecteur est un dispositif d'éclairage pourvu d'un système optique qui concentre la lumière sur une zone déterminée, et qui est utilisé pour produire de la lumière sur les scènes de spectacle, les plateaux de télévision et de tournage des films. Le projecteur se compose d'une lampe, d'une optique et éventuellement d'un réflecteur, l'ensemble étant protégé par une armature métallique. Leurs réglages et la façon de les utiliser sont différents selon l'effet recherché, leur construction optique et la nature du modèle et des sources lumineuses employées ; lampes à incandescence, lampes halogènes, HMI ou LED.
Rythme veille-sommeil irrégulierLe rythme veille-sommeil irrégulier est un trouble du sommeil faisant partie des troubles du rythme circadien. Il est l'expression d'une désorganisation totale des cycles veille-sommeil par rapport au rythme nycthéméral. La fréquence du trouble est inconnue. On retrouve assez souvent une démence ou d’autres atteintes cérébrales dégénératives associées. On observe une absence totale de rythme veille-sommeil. Il n’existe pas d’horaire fixe de sommeil.
