Search results for "git"
showing 10 items of 7116 documents
Germany: Where Are We Going?
2012
Germany’s health policy, in the past, has tried to limit health expenditures by defining an overall health budget, by installing a DRG-system and by forcing patients to participate directly at health costs by demanding copayments. These measurements were somehow effective in keeping premiums stable but have led to resource allocation at the bedside and therefore on an implicit level. Yet, implicit-level decisions create ethical dilemmas for physicians as they not only have to deliver best medical care but shall also have cost in mind, are unjust because rationing criteria differ from one case to another, and create a general fear of legal uncertainty, in turn leading to defensive medicine w…
Clinical and radiological features of Forestier's disease presenting with dysphagia
2018
Background Diffuse idiopathic skeletal hyperostosis (DISH), also known as Forestier's disease, is a rheumatologic condition characterized by ossification of the spinal ligaments and tendons. Large anterior osteophytes are typically present in the lower cervical levels, while upper cervical ossification resulting in dysphagia is very rare. Methods Here, we presented a patient with Forestier's disease involving massive ossification of the anterior longitudinal ligament extending from C3 to C4 downward contributing to severe dysphagia. Results A 65-year-old male presented with cervical pain and dysphagia. The computed tomography of the cervical spine demonstrated massive anterior longitudinal …
Análisis de plataformas digitales y competencias del profesorado en entornos virtuales
2018
Las tecnologías digitales han entrado en la escuela y en la universidad de forma imparable y el profesorado ha de afrontar el reto de responder a las necesidades educativas y al contexto de la sociedad del siglo XXI. Para ello, hemos de alcanzar las competencias necesarias para trabajar en entornos virtuales y también facilitar espacios de reflexión donde sea posible la construcción del conocimiento de forma cooperativa. A través del instrumento-guía para el análisis de las plataformas y/o portales web del grupo CRIE de la Universidad de Valencia, examinamos dos plataformas virtuales, para recalar en el tema de las competencias que ha de dominar el profesorado y el modelo de enseñanza que s…
Rol de las familias. Escuelas y docentes en las interacciones entre tecnología digital y primera Infancia y sus posibles efectos
2022
En este capítulo se pretende describir los usos e influencia de la tecnología centrados en la Primera Infancia, tanto en la escuela como en el hogar. Se reflexiona sobre la interacción entre infancia, tecnología, familias y escuela, partiendo de la Teoría ecológica de sistemas y en el marco de la sociedad digital del siglo XXI. This chapter aims to describe the uses and influence of technology focused on Early Childhood, both at school and at home. It reflects on the interaction between childhood, technology, families and school, based on the ecological theory of systems and within the framework of the digital society of the 21st century. Se destaca el papel relevante que tiene la comunicac…
Analyse pseudo-longitudinale de la transformation de l'offre des formations d'ingénieurs en France
2010
En France, comme ailleurs dans la zone, le déclin des emplois industriels est profond, de plus de 6 millions il y a quarante ans, le rythme actuel de destruction d'emploi est proche d'une centaine de milliers pas an. Accéléré par la crise actuelle, l'enfoncement du seuil de trois millions d'emplois industriels est aujourd'hui inéluctable à court terme. De seul cadre technique de l'industrie, le métier d'ingénieur a lui aussi évolué. Le seul fait d'évoquer les métiers de l'ingénierie financière est là pour le rappeler, d'une part et d'autre part les firmes industrielles se sont profondément transformées puisque le taux d'ingénieurs diplômés dans l'emploi peut y représenter plus du tiers. Cet…
A Novel Linear-Non-Linear Digital Control for DC/DC Converter with Fast Transient Response
2006
In this paper, a digitally controlled multimodule DC-DC converter with fast transient response, based on a linear-nonlinear control is presented. The proposed digital control improves the stability of the system, cuts off the effects of limit-cycle and reduces the recovery time, by making the "effective" bandwidth of the system independent of the bandwidth of the linear control loop and limits, at the same time, output voltage variations. The digital control is AVP-compatible and halves the recovery time. Preliminary hardware tests on a single phase step-down converter are reported. The experimental results match simulation ones, obtained by modelling system with Matlab/Aldec mixed environm…
Digital power conversion system based on a sigma-delta modulator linear model
2005
This paper presents a new linear model for the sigma-delta (/spl Sigma//spl Delta/) modulator, based on modeling the nonlinear quantizer with a linear factor, and its input-to-output transfer function is given. The use of a 1-bit sigma-delta modulator in DC/DC power converter systems permits to implement a complete digital control. Results of an investigation from a prototype for a DC-DC converter are here reported. Using of a field programmable gate array allows implementing a simple variable control function. The modulator output produces a variable-frequency variable duty-ratio signal to control the switching power transistors.
Linear-non-linear digital control for dc/dc converters with fast transient response
2009
A linear-non-linear digital control for multi-module DC/DC converters that improves system stability, solves the limit-cycle problem, reduces recovery time and limits over- and under-shoots in regulated output voltage, is presented. A simulation model in Matlab-Simulink/Active-HDL mixed environment is described. Preliminary hardware tests on a single-phase step-down converter are reported. Simulation and experimental results are shown.
Tecniche avanzate per il rilevamento e la valorizzazione dei beni culturali. La chiesa rupestre di San Nicolò a Modica (RG)
2011
La Geomatica mette oggi a disposizione degli operatori che a vario titolo si occupano di beni culturali (storici, tecnici delle Soprintendenze, specialisti del recupero e del restauro, o anche solo studiosi) tecniche e strumentazioni di rilevamento sempre più veloci, accurate, affidabili. Spesso, la complessità della geometria dei manufatti da rilevare richiede l’uso di metodologie differenti ma integrate fra loro. Questo è, ad esempio, il caso del rilevamento della chiesa rupestre di San Nicolò a Modica per il quale si è fatto ricorso all’impiego di tecniche laser-scanning e fotogrammetriche digitali integrate. Questa integrazione ha permesso di ottenere un modello 3D virtuale foto realist…
Second to fourth digit ratios and the implicit gender self-concept
2007
Abstract Intersexual and intrasexual variation in the ratio of index and ring finger lengths (2D:4D) is thought to be a marker of fetal androgen and estrogen levels. Thus, 2D:4D ratios have been expected to be associated with the development of the gender self-concept (masculinity vs. femininity). These associations have, however, proven to be empirically rather small and lower than expected. By arguing that early developmental events more greatly influence implicit as compared with explicit self-concepts, we hypothesized that 2D:4D ratios might be associated with the implicit gender self-concept – assessed using an Implicit Association Test – as opposed to the self-reported explicit gender…