Cohen über Spinoza: Das Denken der Natur und die Natur des Denkens

This analysis of Cohen’s reception of Spinoza’s thought draws attention to theoretical issues: the nature of thinking and the thinking of nature. In a synoptic way it refers to several of Cohen’s works, trying to determine continuity and discontinuity in his interpretation of Spinoza, with a specific focus on Ethica ordine geometrico demonstrata. Thus, Cohen’s reception of Spinoza’s thought seems to be characterized by a continuity similar to what we can find in Cohen’s philosophical system as a whole. Discrepancies in his interpretation of Spinoza correspond to a progressive refinement of his own speculative approach.

Efficient and Accurate Object 3D Selection With Eye Tracking-Based Progressive Refinement

Selection by progressive refinement allows the accurate acquisition of targets with small visual sizes while keeping the required precision of the task low. Using the eyes as a means to perform 3D selections is naturally hindered by the low accuracy of eye movements. To account for this low accuracy, we propose to use the concept of progressive refinement to allow accurate 3D selection. We designed a novel eye tracking selection technique with progressive refinement–Eye-controlled Sphere-casting refined by QUAD-menu (EyeSQUAD). We propose an approximation method to stabilize the calculated point-of-regard and a space partitioning method to improve computation. We evaluated the performance of EyeSQUAD in comparison to two previous selection techniques–ray-casting and SQUAD–under different target size and distractor density conditions. Results show that EyeSQUAD outperforms previous eye tracking-based selection techniques, is more accurate and can achieve similar selection speed as ray-casting, and is less accurate and slower than SQUAD. We discuss implications of designing eye tracking-based progressive refinement interaction techniques and provide a potential solution for multimodal user interfaces with eye tracking.

hv 2-concept breaks the photon-count limit of RIXS instrumentation

Upon progressive refinement of energy resolution, the conventional resonant inelastic X-ray scattering (RIXS) instrumentation reaches the limit where the bandwidth of incident photons becomes insufficient to deliver an acceptable photon-count rate. Here it is shown that RIXS spectra as a function of energy loss are essentially invariant to their integration over incident energies within the core-hole lifetime. This fact permits RIXS instrumentation based on the hv 2-concept to utilize incident synchrotron radiation over the whole core-hole lifetime window without any compromise on the much finer energy-loss resolution, thereby breaking the photon-count limit.