15 research outputs found

    Comparison of “Simple Reality” Rule and the Mystical Phrase "The essence of God is oneness in his essence, everything in the names"

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    “Simple reality” rule states the relation of its true instance, that is, God to the universe. The similarity of this relationship in transcendent wisdom and mysticism, and Mulla Sadra's stipulation of mystics' intuitive perception of the content of this rule, makes thought seek its counterparts in mysticism. The closest mystical interpretation to the meaning of the above-mentioned rule is the statement of Ibn Arabi that "The essence of God is oneness in his essence, everything in the names", as far as it can be considered as a counterpart in the mysticism of the “simple reality” rule. The meaning of this phrase is the negation of plurality by the inherent oneness of God and the justification of plurality by the effusion of the universe from divine names. This mystical belief, results such as; The attribution of all positive and negative rulings to God, unity at the same time as multiplicity at the same time as unity, and simultaneous correctness of similitude and purification. An analytical study of these cases shows that the positive content of the “simple reality” rule in in knowing God "all things" is the mystical expression that the totality of the existence of God with the existence of others does not stand, in the sense that the existence of the God as appearance is different from the universe as his manifestations

    A survey on fopid controllers for lfo damping in power systems using synchronous generators, facts devices and inverter-based power plants

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    In recent decades, various types of control techniques have been proposed for use in power systems. Among them, the use of a proportional–integral–derivative (PID) controller is widely recognized as an effective technique. The generalized type of this controller is the fractional-order PID (FOPID) controller. This type of controller provides a wider range of stability area due to the fractional orders of integrals and derivatives. These types of controllers have been significantly considered as a new approach in power engineering that can enhance the operation and stability of power systems. This paper represents a comprehensive overview of the FOPID controller and its applications in modern power systems for enhancing low-frequency oscillation (LFO) damping. In addition, the performance of this type of controller has been evaluated in a benchmark test system. It can be a driver for the development of FOPID controller applications in modern power systems. Investigation of different pieces of research shows that FOPID controllers, as robust controllers, can play an efficient role in modern power systems

    PMU-Based FOPID Controller of Large-Scale Wind-PV Farms for LFO Damping in Smart Grid

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    Due to global warming problems and increasing environmental pollution, there is a strong tendency to install and apply renewable energy power plants (REPPs) around the world. On the other hand, with the increasing development of information and communication technology (ICT) infrastructures, power systems are using these infrastructures to act as smart grids. In fact, future modern power systems should be considered as smart grids with many small and large scale REPPs. One of the main problems and challenges of the REPPs is uncertainty and fluctuation of electrical power generation. Accordingly, a suitable solution can be combination of different types of REPPs. So, the penetration rate of large-scale wind-PV farms (LWPF) is expected to increase sharply in the coming years. Given that the LWPFs are added to the grid or will replace fossil fuel power plants, they should be able to play the important roles of synchronous generators such as power low-frequency oscillation (LFO) damping. In this paper, an LFO damping system is suggested for a LWPF, based on a phasor measurement unit (PMU)-based fractional-order proportional–integral–derivative (FOPID) controller with wide range of stability area and proper robustness to many power system uncertainties. Finally, the performance of the proposed method is evaluated under different operating conditions in a benchmark smart system

    Direct Electron Transfer of Hemoglobin on Manganese III Oxide-Ag Nanofibers Modified Glassy Carbon Electrode

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    We investigated the electrochemical behavior of hemoglobin by glassy carbon electrode modified with Mn2O3-Ag nanofibers. The Mn2O3-Ag nanofibers were used as facilitator electron transfer between Hb and glassy-carbon-modified electrode. The Mn2O3-Ag nanofibers are studied by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The hemoglobin showed a quasireversible electrochemical redox behavior with a formal potential of −49 mV (versus Ag/AgCl) in 0.1 M potassium phosphate buffer solution at pH 7.0. The designed biosensor possesses good stability and reproducibility and achieves 95% of the steady-state current in less than five seconds

    Investigating the Relationship Between Flourishing and Body Image in Female Students

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    Background and Aim: Body image represents how one perceives his/her body and acts as the most important part of an individual’s image of oneself. It is because a person's physical appearance is the first feature that is judged by people when they encounter each other. The aim of this study was to investigate the relationship between flourishing and body image in female students. Methods:  This research is descriptive and correlational. The statistical population of the present study included all 11- to 13-year-old female students in Kavar schools who were studying in 2020. From among them, based on Morgan table and using the available sampling method, 250 female students were selected as the sample. In order to collect research data, the body image questionnaire (Kesh and Prozinsky, 1985) and the flourishing questionnaire (Soleimani et al., 2015) were used. Data were analyzed using Pearson correlation coefficient method and SPSS software. Results: There is a positive and significant relationship with flourishing. But there is a significant relationship between weight satisfaction only with the component of the relationship and overall prosperity. Conclusion:    The results showed that body image, as an element that a person has a positive or negative about their body, affects his mental life and attitudes, which leads to accepting the value of the person and believing in his positive social development

    Medical Image Segmenter (MIS)

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    Medical Image Segmenter (MIS) is a software tool for semi-manual segmentation of 3D medical images in the DICOM format. The image should be acquired along the axial direction. <br>MIS facilitates the manual segmentation of medical images by using a segmentation algorithm based on thresholding and connected-component analysis.<br><div>The source codes and executable (EXE) file of MIS were uploaded as two RAR archive files. Also, there is a pictorial user manual for MIS as an extra PDF file. </div

    Implemented code of FuzBin in the MATLAB environment

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    The implemented code of our threshold selection method for document images called FuzBin in the MATLAB environment.<br><br>Please refer to the following paper:<br>Mohsen Annabestani, Mahdi Saadatmand-Tarzjan, "A New Threshold Selection Method Based on Fuzzy Expert Systems for Separating Text from the Background of Document Images," Submitted to Iranian Journal of Science and Technology, Transactions of Electrical Engineering.<br><br> Corresponding Author: Mahdi Saadatmand-Tarzjan, Medical Imaging Lab, Department of Electrical Engineering, Ferdowsi University of Mashhad, Faculty of Engineering, 9177948974 Mashhad, Iran, [email protected]<br
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