The magnification behaviour of a generalized family of self-organizing feature maps, the Winner Relaxing and Winner Enhancing Kohonen algorithms is analyzed by the magnification law in the one-dimensional case, which can be obtained analytically. The Winner-Enhancing case allows to acheive a magnification exponent of one and therefore provides optimal mapping in the sense of information theory....

BACKGROUND The authors conducted a study aimed to assess the awareness and attitude among dental students and residents at King Abdulaziz University, Faculty of Dentistry (KAUFD) toward using dental magnification. METHODS An e-questionnaire was formulated then sent to dental students and residents (n = 651). The questionnaire included questions that assessed both the awareness and attitude to...

A distinct body of literature supports the association between clinical postures of the dental practitioner and work-related musculoskeletal disorders (WRMD). Several aids or devices have been tested to improve clinical posture in the interest of decreasing WRMD. The use of magnification lenses while performing dental procedures may increase the quality of work and decrease the likelihood of mu...

We consider the effect of lensing magnification on high redshift sources in the case that magnification varies on the sky, as expected in wide fields of view or within observed galaxy clusters. We give expressions for number counts, flux and flux variance as integrals over the probability distribution of the magnification. We obtain these through a simple mapping between averages over the obser...

Purpose: To demonstrate the corneal magnification using trypan blue in cataract surgery. Methods: Eight eyes of eight patients undergoing phacoemulsification with an intraocular lens implantation were enrolled in this study. After staining the anterior capsule with Trypan Blue 0.1% and performing the capsulorhexis, the excised anterior capsule was placed on the corneal surface. By observing and...

Vision researchers base their work on assumptions that lenses behave ideally. In practice the image formation process is complex and camera lenses have many non-ideal behaviors that can cause problems in simple vision tasks like color image analysis and range from focus. For example, unlike the ideal lens the refractive power of a real lens is actually a function of wavelength. This means that ...

We study the statistical properties of magnification perturbations by substructures in strong lensed systems using linear perturbation theory and an analytical substructure model including tidal truncation and a continuous substructure mass spectrum. We demonstrate that magnification perturbations are dominated by perturbers found within roughly a tidal radius of an image, and that sizable magn...

T he patient is a 65-year-old man with HIV/AIDS. In February 2016, he presented to an outside hospital with ascites (panel A; hematoxylin and eosin stain, original magnification3400) and a diagnosis ofMYC-rearranged (panel B) CD5–dimly positive (panel C) “aggressive large B-cell lymphoma.” There was no CD3 (panel D) or rearrangement of BCL2 or BCL6. He was treated and his ascites resolved, but ...

Objective: to analyze the organizational culture of a psychiatric hospital and identify the capacity of resilience of nursing workers. Method: quantitative research. For data collection, were used the Brazilian Instrument for Evaluation of Organizational Culture (IBACO - Instrumento Brasileiro para Avaliação da Cultura Organizacional) and the Resilience Scale (RS). Results: participants rep...