A Machine Learning Approach For Opinion Holder Extraction In Arabic Language

Opinion mining aims at extracting useful subjective information from reliable amounts of text. Opinion mining holder recognition is a task that has not been considered yet in Arabic Language. This task essentially requires deep understanding of clauses structures. Unfortunately, the lack of a robust, publicly available, Arabic parser further complicates the research. This paper presents a leading research for the opinion holder extraction in Arabic news independent from any lexical parsers. We investigate constructing a comprehensive feature set to compensate the lack of parsing structural outcomes. The proposed feature set is tuned from English previous works coupled with our proposed semantic field and named entities features. Our feature analysis is based on Conditional Random Fields (CRF) and semi-supervised pattern recognition techniques. Different research models are evaluated via cross-validation experiments achieving 54.03 F-measure. We publicly release our own research outcome corpus and lexicon for opinion mining community to encourage further research

Boundary Element Modeling and Optimization of Three Temperature Nonlinear Fractional Generalized Photo-Thermoelastic Interaction in Anisotropic Semiconductor Structures

The main objective of this paper is to introduce a new fractional-order theory called nonlinear fractional generalized photo-thermoelasticity involving three temperatures. Due to strong nonlinearity, it is very difficult to solve the wave problems related to this theory analytically. Therefore, we propose a new boundary element algorithm and technique for simulation and optimization of the considered problems related to this theory. The genetic algorithm (GA) as an optimization method has been applied based on free form deformation (FFD) technique to improve the performance of our proposed technique. In the formulation of the considered problem, the profiles of the considered objects are determined by FFD technique, where the FFD control point positions are treated as genes, and then the chromosome profiles are defined with the gene sequence. The population is established by a number of individuals (chromosomes), where the objective functions of individuals are achieved by the boundary element method (BEM). A nonuniform rational B-spline curve (NURBS) was used to model optimized boundary where it reduces the number of control points and provides the flexibility to design several different shapes for solving the considered photo-thermoelastic wave problems. The numerical results verify the validity and accuracy of our proposed boundary element technique

Boundary element solution of 2D coupled problem in anisotropic piezoelectric FGM plates

The mechanics of the piezoelectric functionally graded material (FGM) has received considerable research effort with their increasing usage in various applications including sensors and actuators, piezoelectric motors, reduction of vibrations and noise, infertility treatment and photovoltaics. It is hard to find the analytical solution of a problem in a general case, therefore, an important number of engineering and mathematical papers devoted to the numerical solution have studied the overall behavior of such materials. The time-stepping dual reciprocity boundary element method was proposed to solve the 2D coupled problem in anisotropic piezoelectric FGM plates. The accuracy of the proposed method was examined and confirmed by comparing the obtained results with those known previously

Boundary Element Mathematical Modelling and Boundary Element Numerical Techniques for Optimization of Micropolar Thermoviscoelastic Problems in Solid Deformable Bodies

The main objective of this chapter is to introduce a new theory called three-temperature nonlinear generalized micropolar thermoviscoelasticity. Because of strong nonlinearity of simulation and optimization problems associated with this theory, the numerical solutions for problems related with the proposed theory are always very difficult and require the development of new numerical techniques. So, we propose a new boundary element technique for simulation and optimization of such problems based on genetic algorithm (GA), free form deformation (FFD) method and nonuniform rational B-spline curve (NURBS) as the shape optimization technique. In the formulation of the considered problem, the profiles of the considered objects are determined by FFD method, where the FFD control points positions are treated as genes, and then the chromosomes profiles are defined with the genes sequence. The population is founded by a number of individuals (chromosomes), where the objective functions of individuals are determined by the boundary element method (BEM). The numerical results verify the validity and accuracy of our proposed technique

Boundary Element Model for Nonlinear Fractional-Order Heat Transfer in Magneto-Thermoelastic FGA Structures Involving Three Temperatures

The principal objective of this chapter is to introduce a new fractional-order theory for functionally graded anisotropic (FGA) structures. This theory called nonlinear uncoupled magneto-thermoelasticity theory involving three temperatures. Because of strong nonlinearity, it is very difficult to solve the problems related to this theory analytically. Therefore, it is necessary to develop new numerical methods for solving such problems. So, we propose a new boundary element model for the solution of general and complex problems associated with this theory. The numerical results are presented graphically in order to display the effect of the graded parameter on the temperatures and displacements. The numerical results also confirm the validity and accuracy of our proposed model

Assesing interactivity in the websites of human rights organizations\u27 websites in Egypt

The Internet has many advantages over the other media in the provision of information services especially in the field of human rights. In Egypt the image of the human rights organization has been affected severely after the Egyptian revolution due to continuous media attack on them; therefore, it became vital to change this image. As the websites is the primary tool that permits the organizations to connect with their audience and permit the audience to know their activities, analyzing the websites of the human rights in Egypt from user perspective become vital This study aims to assess the interactivity and public involvement allowed by the sites to see whether they use their websites in an efficient way that permit them to reach their audience nationally and internationally or not, moreover, it tries to figure out reasons behind this level of interactivity. “Reception based analysis†technique was used for the first time in Egypt, to map both the interactivity level and the amount of public engagement allowed by the site in a sample of 10 existing human rights websites along with Heeter and Burgeon 7 dimensions of interactivity (content and availability of choice, effort user must exert, responsiveness to users, ease of adding information, facilitation of interpersonal communication, modality and information rich, and ability to make two ways communication ) ; Moreover , interviews with experts and official working in the field of human rights was used to know more in depth data about the barriers that confront the websites developers of human rights organizations in Egypt Using the reception based analysis technique gives the study the advantage of understanding how the users sees different dimensions of interactivity and public engagement in the websites of human right NGOs. The results of the analysis indicated the overall level of opportunities for interactivity in the websites of human rights NGOs in Egypt is very low; moreover, the overall level of public engagement allowed by the site is low. Moreover, the results of the interviews revealed that lack of funds, lack of media and IT specialists in the organization, and technological gap were the main problems that confront the organization while maintaining interactivity of their website

A New Computerized Boundary Element Model for Three-Temperature Nonlinear Generalized Thermoelastic Stresses in Anisotropic Circular Cylindrical Plate Structures

In this chapter, we propose a new theory called nonlinear generalized thermoelasticity involving three temperatures. Because of strong nonlinearity of the proposed theory, therefore, it is much more difficult to develop analytical solution for solving problems related with the proposed theory. So, we propose a new computerized boundary element model for the solution of such problems and obtaining the three-temperature nonlinear generalized thermoelastic stresses in anisotropic circular cylindrical plate structures problems which are related with the proposed theory, where we used two-dimensional three temperature nonlinear radiative heat conduction equations coupled with electron, ion and phonon temperatures. The numerical results of the current study show the temperatures effects on the thermal stresses. Also, these numerical results demonstrate the validity and accuracy of our proposed model

Development Of Test Platform Of Fpga Interconnect To Capture Marginal Open Defect

This research highlights the development of test platform of FPGA interconnect to capture marginal open defect on Altera® Stratix V devices. The need for at-speed test was due to the increasing number of marginal open defects, resulting from manufacturing process complexity anticipated from continuously shrinking transistors towards nanometer (nm) scale. The defect was unable to be captured by current stuck-at test and this research utilized the Launch on Shift (LOS) transition delay method to detect the marginal open defects. Towards the final implementation, there are few unique design implemented in order to generate the at-speed clocks and the pipelined scan enable signals to support LOS method. Meanwhile, the ability to test the interconnect on at-speed frequency required new routing tool control variables to limit the interconnect path lengths and device power consumption. The control variables are discussed further in this research. The LOS test patterns used in this research managed to cover up to 81% of the overall routing resources for marginal open defect effectively. Furthermore, the test was successfully implemented at frequencies up to 400 MHz and proven to be sensitive to routing delay to capture marginal open defects. The ability to capture the defect with only 0.56 kΩ resistance is better than the initial 3 kΩ target in this research. It is also better than other literatures which targeted between 6 kΩ to 10 kΩ only