35 research outputs found
M.-F. Ludmann-Obier, Die Kontrolle der chemischen Industrie in der französischen Besatzungszone 1945–1949, 1989
No full textM.-F. Ludmann-Obier, Die Kontrolle der chemischen Industrie in der französischen Besatzungszone 1945–1949, 1989
No full textDesarrollo Más allá de la verdad: explorando la teoría del conocimiento y sus desafíos
No full textEl presente artículo ahonda en la compleja problemática del conocimiento desde una perspectiva filosófica que dialoga con corrientes como el empirismo, racionalismo, subjetivismo, relativismo y realismo. A lo largo de todo este escrito, se explora la tensión entre el sujeto y el objeto en el proceso cognoscitivo, así como en la búsqueda de una verdad que sea válida sin caer en el dogmatismo ni en el relativismo extremo. Se reflexiona también sobre el papel de la experiencia, la razón y el contexto cultural en la construcción del saber, y que, asimismo, se resalta
el impacto que estas corrientes tienen en la epistemología contemporánea y en disciplinas aplicadas como la ciencia o la inteligencia artificial. En última instancia, el artículo propone una mirada integradora que reconoce la dignidad de la razón humana y su apertura a lo trascendente, en diálogo con una visión espiritual del conocimiento.This article explores the philosophical foundations of knowledge through an analysis of various epistemological perspectives, including empiricism, rationalism, subjectivism, relativism, and realism. It examines the ongoing debate regarding the relationship between the knowing subject and the known object, as well as the possibility of achieving universal truths without falling into dogmatism or excessive relativism. The discussion highlights how reason, experience, and sociocultural context shape our understanding of truth and knowledge. Furthermore, the study considers the influence of these approaches in contemporary epistemology and applied fields such as science and artificial intelligence. Ultimately, the article proposes a reflective and integrative vision that affirms both the role of human reason and its openness to transcendence, fostering a deeper appreciation of the spiritual dimension of knowledge.PregradoFILÓSOFO (A)Filosofí
Role of hypoxia-inducible factor 1alpha in the integrity of articular cartilage in murine knee joints
No full textFIRST REALIZATION AND PERFORMANCE STUDY OF A SINGLE-SHOT LONGITUDINAL BUNCH PROFILE MONITOR UTILIZING A TRANSVERSE DEFLECTING STRUCTURE
No full textAbstract For the control and optimization of electron beam parameters at modern free-electron lasers (FEL), transverse deflecting structures (TDS) in combination with imaging screens have been widely used as robust longitudinal diagnostics with single-shot capability, high resolution and large dynamic range. At the free electron laser in Hamburg (FLASH), a longitudinal bunch profile monitor utilizing a TDS has been realized. In combined use with a fast kicker magnet and an off-axis imaging screen, selection and measurement of a single bunch out of the bunch train with bunch spacing down to 1 µs can be achieved without affecting the remaining bunches which continue to generate FEL radiation during user operation. Technical obstacles have been overcome such as suppression of coherent transition radiation from the imaging screen, the continuous image acquisition and processing with the bunch train repetition rate of 10 Hz. The monitor, which provides the longitudinal bunch profile and length, has been used routinely at FLASH. In this paper, we present the setup and operation of the longitudinal bunch profile monitor as well as its performance during user operation
Online Longitudinal Bunch Profile and Slice Emittance Diagnostics at the European XFEL
No full textThe longitudinal current profile and slice emittance are important bunch parameters for the operation of an X-ray free-electron laser. At the European XFEL, dedicated diagnostic sections equipped with transverse deflecting RF structures (TDS) have been installed for the control and optimisation of these parameters. Travelling-wave TDS in combination with fast kicker magnets and off-axis screens allow for the study of individual bunches without affecting the other bunches in the super-conducting linear accelerator which can generate bunch trains of up to 2700 bunches at 4.5 MHz within 600 microsecond RF pulses at a repetition rateof 10 Hz. The measurement of the slice emittance is realised in a static F0D0 lattice equipped with four individual screen stations.Variations of the longitudinal bunch profile or slice emittance along the bunch train may lead to degraded FEL performance for parts of the train which reduces the effective available number of bunches for FEL operation. By gradually adjusting the timing, individual bunches along the bunch train can be measured in order to optimise the overall beam parameters for all bunches in the train. In this paper, we describe in detail the diagnostic concept and present first measurement results of the projected and slice emittance along the bunch train
