Unique liquid crystal (LC) spatial light modulators (SLM) are being developed for foveated imaging systems that provide wide field-of-view (FOV) coverage (±60 in azimuth and elevation) without requiring gimbals or other mechanical scanners. Recently, a transmissive-SLM-based system operating in the visible (532 nm) has been demonstrated. The LC SLM development is addressing implementation issu...

This article presents the strategic learning meta-model (SLM). We describe the architecture of the SLM, which consists of three layers: reactive layer, intelligent layer and infrastructure layer. The purpose of this paper is to present the reactive layer of the SLM and in particular the model that constitutes: the regulation model. This model was tested with a series of cases which indicate an ...

Orthogonal frequency division multiplexing (OFDM) modulation using orthogonal subcarriers reduces the delay spread by increasing robustness to multipath fading and can use overlapped bandwidth due to orthogonality on frequency domain. The main drawback of Orthogonal Frequency Division Multiplexing(OFDM) systems is the high peak-to average power ratio (PAPR),which significantly reduces the effic...

We explore a novel approach for fabricating polymeric microfluidic-channelled dielectrophoretic (DEP) chips by direct laser projection through a holographic Spatial-Light-Modulator (SLM) onto photorefractive crystal substrates. As the first step, an all-optical mould-free approach was used to fabricate the PDMS microfluidic channel, by exploiting the light induced space charge field in Fe-doped...

In this paper we present an extention of a context tree for a structured language model (SLM), which we call an arbori-context tree. The state-of-the-art SLM predicts the next word from a xed partial tree of the history tree, such as two exposed heads, etc. An arbori-context tree allows us to select an optimum partial tree of a history tree for the next word prediction depending on the e ective...

In today’s information technology infrastructures Service Level Management (SLM) is considered a vital discipline of IT Service Management. Only by having a framework for establishing a common understanding of services and the manner in which they are used and provided, can next generation IT infrastructures (e-Infrastuctures) maintain a sufficient “customer satisfaction” on a sustainable level...

A method is proposed for the construction of a square pixel complex spatial light modulator (SLM) from a commercial oblong full-high-definition (full-HD) amplitude SLM using an anamorphic optical filter. In the proposed scheme, one half-band of the optical Fourier transform of the amplitude-only spatial light field is rejected in the optical Fourier plane and the other half-band is reformatted ...

For large-scale selective laser melting (SLM) additive manufacturing technology, three main problems severely restrict its development and application, namely the residual stress, defects, and columnar grains with anisotropy. To overcome these problems, a new method is proposed by combining SLM with ultrasonic impact treatment (UIT) technique. This study explores the feasibility of UIT assisted...

In this paper we describe the statistical Structured Language Model (SLM) that uses grammatical analysis of the hypothesized sentence segment (prefix) to predict the next word. We first describe the operation of a basic, completely lexicalized SLM that builds up partial parses as it proceeds left to right. We then develop a chart parsing algorithm and with its help a method to compute the predi...

We present a method for converting the desired phase values of a hologram to the correct pixel addressing values of a spatial light modulator (SLM), taking into account detailed spatial variations in the phase response of the SLM. In addition to thickness variations in the liquid crystal layer of the SLM, we also show that these variations in phase response can be caused by a non-uniform electr...