نتایج جستجو برای: prism
تعداد نتایج: 9449 فیلتر نتایج به سال:
BACKGROUND Chronic subjective tinnitus is a frequent condition that affects the subject's quality of life. The lack of objective measures of tinnitus necessitates the use of self-reporting and often time-consuming questionnaires for evaluating tinnitus severity. The Pictorial Representation of Illness and Self Measure (PRISM) is a two dimensional pictorial method to assess the burden of sufferi...
The purpose of this paper is to propose a system and process for maximizing store profits to discover the optimal price pattern among various items based on a purchase prediction models. This system, called PRISM, involves the use of data mining techniques to handle a large amount of customer purchase history data. In this paper we have applied PRISM to the customer data of supermarket in Japan...
PRISM is a probabilistic-logical programming language based on Prolog. We present a PRISM-implementation of a general model for polyphonic music, based on Hidden Markov Models. Its probability parameters are automatically learned by running the built-in EM-algorithm of PRISM on training examples. We show how the model can be used as a classifier for music that guesses the composer of unknown fr...
A prism grating using polymer stabilized liquid crystal was fabricated and its diffraction characteristics evaluated. Such a prism grating exhibits not only a periodic grating structure but also a prism-like gradient refractive index within each grating period. As a result, the diffraction behavior is asymmetric. The first order exhibits high diffraction efficiency while the zeroth order has a ...
PRISM is a probabilistic logic programming formalism which allows learning parameters from examples through its graphical EM algorithm. PRISM is aimed at modelling generative processes in the compact first-order logic representation. It facilitates model selection by providing three scoring functions Bayesian Information Criterion (BIC), Cheeseman-Stutz (CS) and Variational free energy. This pa...
This paper describes the design, fabrication, and testing of two hollow prisms. One is a prism with a grating glued to its hypotenuse. This ensemble, prism + grating, is called a grism. It can be applied as an on-axis tunable spectrometer. The other hollow prism is a constant deviation one called a Pellin-Broca. It can be used as a tunable dispersive element in a spectrometer with no moving par...
سابقه و هدف: سیستم های رتبه بندی برای تصمیم گیری در مورد اولویت ها و ارزیابی عملکرد یک واحد مراقبت ویژه کودکان بسیار مفید هستند. از جمله سیستم هایی که می توان به آن اشاره کرد معیارهای iii- prism و pim هستند که امروزه در اکثر مراکز مراقبت های ویژه کودکان جهت ارزیابی کیفی و کمی عملکرد آن مرکز استفاده می شوند. هدف از این تحقیق تعیین پیش آگهی بیماران بستری در بخش مراقبت های ویژه کودکان بیمارستان مف...
It is demonstrated that strong asymmetry in transmission can be obtained at the Gaussian beam illumination for a single prism based on a photonic crystal (PhC) with isotropic-type dispersion, as well as for its analog made of a homogeneous material. Asymmetric transmission can be realized with the aid of refraction at a proper orientation of the interfaces and wedges of the prism, whereas neith...
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