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Author(s): 

NASERI ALI | eyvazi mehdi

Journal: 

ELECTRONIC INDUSTRIES

Issue Info: 
  • Year: 

    2019
  • Volume: 

    10
  • Issue: 

    2
  • Pages: 

    81-86
Measures: 
  • Citations: 

    0
  • Views: 

    534
  • Downloads: 

    0
Abstract: 

Usually two-dimensional substitution is used for the production of integrated circuits. Due to heavy use of communications, two-dimensional substitution has high losses as well as, density of elements is low in it. To resolve this problem, three-dimensional substitution method was proposed. Rather than the two-dimensional arrangement of elements in a row, elements are layout in three dimensions in this substitution. In this paper, three-dimensional substitution algorithms using order used in two-dimensional substitution, three-dimensional substitution analysis by mPL and three-dimensional substitution simultaneous with two-dimensional substitution by mPL have been studied in terms of structure and function, and a butterfly processing element (PE) and an Advanced Encryption Standard (AES) block and a wireless MIMO decoder to assess them have been implemented with the mentioned methods. . Applying these methods shows that the use of face to face integration by microbuses in communications of substitution algorithm, on average, improves the maximum clock and block speed of AES encryption to 15. 3% and the maximum clock and block speed of PE module to 22. 6% as well as the maximum clock and speed of MIMO modules to 17. 1%, while the use of these methods has led to the average reduction in power consumption of 2. 6% for the AES module and the average reduction in power of 12. 9% for the PE module and the average reduction in power consumption of 5. 1% for MIMO module.

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Issue Info: 
  • Year: 

    2022
  • Volume: 

    12
  • Issue: 

    47
  • Pages: 

    33-54
Measures: 
  • Citations: 

    0
  • Views: 

    183
  • Downloads: 

    22
Abstract: 

Improving participation in voluntary activities in Iran is important because increasing productivity among young people, given the country's young population, contributes to community sustainability. Therefore, a better understanding of volunteer motivation in Iranian youth is needed. The Volunteer Functions Inventory (VFI) for assessing volunteer motivations has good psychometric properties and is adapted to several languages, but no validated Iranian translation yet exists. The purpose of this study was to investigate the psychometric Characteristics of voluntary functions inventory in members of Iranian Red Crescent Society. Sample size was 595 members of Youth Organization of Iranian Red Crescent Society from 31 provinces and 175 cities of Iran that were selected by multi-stage cluster sampling method and responded to voluntary functions inventory. Data were collected using a demographic sample and voluntary functions inventory (VFI). Confirmatory factor analysis using principal components method was used for data analysis. The results of the present study showed that the voluntary functions inventory had validity and reliability. Also, the factor structure showed that 29 items and 6 factors well assess people's attitudes to volunteering, and the structure of this inventory was well-fitted and confirmed all goodness of fit models. The present study provides the use of the Iranian translation of the Voluntary Functions Inventory (6 scales and 29 items) to assess volunteer motivation among young Iranian volunteers.

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Issue Info: 
  • Year: 

    2018
  • Volume: 

    11
  • Issue: 

    40
  • Pages: 

    43-66
Measures: 
  • Citations: 

    0
  • Views: 

    1589
  • Downloads: 

    0
Abstract: 

Graveyards in Iran have long been one of the most important urban parts, since their uses have not only had a direct relationship with urban planning rules but they have also been under the influence of religious beliefs and customs of people, so organizing and locating them also own certain sensitivities. In terms of the structural situation, the current cemeteries of Pars Abad city are not in good conditions. On the other hand, they lack a suitable burial capacity to meet the new demands of the urban dead. Therefore, this study aims has been attempted to optimize the sites around the city to build a new cemetery using Boolean logic and Fuzzy Logic in the form of GIS. In order to identify the most fundamental factors in determining the appropriate place for the urban cemeteries, the role and affectability of each of the above- mentioned factors in the site selection was determined. Then, using the fuzzy membership functions (Gaussian, large and linear), different maps were prepared based on the nature and role of these factors in site selection. Next, through designing the inference network and taking advantage of the Fuzzy Logic model and its operators (Prod, Sum, and gammas of 0.7, 0.8, and 0.9), the data combination was performed non- linearly. Ultimately, the most suitable sites obtained by the inference network were compared according to the degrees of membership and their distance to the defined boundaries. The results show deep differences between facilities and the desirable status quo site selection of the graveyards. In the end, several measures aimed at restoring the long-standing role of the urban graveyards in the structure of civil life and its attitudes’ changes towards its executive and research are suggested.

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Issue Info: 
  • Year: 

    2024
  • Volume: 

    13
  • Issue: 

    25
  • Pages: 

    126-144
Measures: 
  • Citations: 

    0
  • Views: 

    19
  • Downloads: 

    0
Abstract: 

In this paper, an alternative approach in operational modal analysis is presented, utilizing image processing technique and transmissibility functions. Imaging sensors do not impose additional mass on the structure due to their non-contact nature, while transmissibility functions, independent of excitation type, can directly extract mode shapes. The innovation of this research lies in combining these two techniques to record dynamic responses and identify modal properties. To capture the temporal response history from video signals, the block-matching method with sub-pixel accuracy was employed. Validation was conducted by recording the response of the tip of a cantilevered steel beam subjected to impact excitation, using a high-speed camera and a laser vibrometer, simultaneously. The RMSE plots in the time domain and the PSD in the frequency domain indicate high accuracy of this method. Using this approach, the displacement time histories of various points on the structure were extracted from the video signals, and the modal properties, including natural frequencies, damping ratios, and mode shapes, were identified using the transmissibility matrix method. The results obtained from the proposed method were compared with the stochastic subspace identification (SSI) method and analytical solutions. The findings reveal the accuracy of the modal identification approach introduced in this article. The highest relative error in estimating the natural frequencies of the first and second modes, compared to the values from the laser method, are 0.19% and 0.13%, respectively, and in comparison to the analytical values, they are 0.34% and 1.5%, respectively.

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Author(s): 

ROSHANI AMIR | ERFANIAN ABBAS

Issue Info: 
  • Year: 

    2013
  • Volume: 

    4
  • Issue: 

    3
  • Pages: 

    50-61
Measures: 
  • Citations: 

    0
  • Views: 

    320
  • Downloads: 

    199
Abstract: 

In this paper, a control strategy is proposed for control of ankle movement on animals using intraspinal microstimulation (ISMS). The proposed method is based on fuzzy logic control. Fuzzy logic control is a methodology of intelligent control that mimics human decision-making process. This type of control method can be very useful for the complex uncertain systems that their mathematical model is unknown. To increase the stability and speed of the system’s response and reduce the steady-state error, we combine the FLC with a lead (lag) compensator. The experiments are conducted on five rats. Microelectrodes are implanted into the spinal cord to provide selective stimulation of plantarflexor and dorsiflexor. The results show that motor functions can be restored using ISMS. Despite the complexity of the spinal neuronal networks and simplicity of the proposed control strategy, our results show that the proposed strategy can provide acceptable tracking control with fast convergence.

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Author(s): 

FALLAHI ASDOLLAH

Issue Info: 
  • Year: 

    2010
  • Volume: 

    1
  • Issue: 

    1
  • Pages: 

    113-142
Measures: 
  • Citations: 

    2
  • Views: 

    1318
  • Downloads: 

    0
Abstract: 

We know for logic two systems: the Ancient Logic and the Modern Logic, which are inconsistent in some points of view. In this paper, I want to see if Ancient Logic, versus Modern Logic, is really one logic, has one set of rules, and introduces one methodology. There are many disagreements on the number and the exact formulation of the valid rules of Ancient Predicate Logic. For instance, the various formulations of the Obversion and Contraposition (the congruent and the opposite) can be mentioned as evidence for the claim. Since Aristotle has not spoken of contraposition, it can be concluded that adding the two forms of contraposition to his logical rules provide us with two new logical systems, in which the formulations of the quantified propositions differ from that in Aristotle’s system. Also, since there have appeared different theories on Congruent Contraposition and the Obvertion between Muslim logicians, the number of the systems has reached the six. In this paper, introducing an exact definition for each of these systems, I present suitable formulations for the quantified propositions at the mentioned six systems.

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Author(s): 

Anbiyaie Mohsen

Journal: 

MA`RIFAT FALSAFI

Issue Info: 
  • Year: 

    2019
  • Volume: 

    16
  • Issue: 

    2 (62)
  • Pages: 

    91-101
Measures: 
  • Citations: 

    0
  • Views: 

    827
  • Downloads: 

    0
Abstract: 

Quantum mechanics replaced the traditional mechanics in the early twentieth century. To study Schrodinger’ s wave equation, whose position in this new mechanics is like the status of Newton’ s movement laws in traditional mechanics, numerous philosophical statements have been offered, one of which is ‘ quantum logic’ . The founders of quantum logic claim that on the basis of their observations in quantum level, the traditional logic, which previously served as the measurement for right and wrong arguments, lacks the proper efficiency and must be replaced by one of the expressions of quantum logic. In the present article, while shortly introducing quantum mechanics and quantum logic, we have avoided entering the formal discussions of quantum logic and used analytical method to investigate the possibility of replacing the traditional logic with quantum logic. According to this study, it was clarified that one must regard quantum logic just as a mathematical formulization, not an alternative logic, because firstly it is dependent on a certain statement of Schrodinger’ s equation, and secondly, one must use traditional logic to falsify it. Applying this logic to traditional and quantum logic would result in truth and falsehood of both logics and not falsehood of traditional logic and truth of alternative logic.

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Issue Info: 
  • Year: 

    2024
  • Volume: 

    15
  • Issue: 

    12
  • Pages: 

    435-452
Measures: 
  • Citations: 

    0
  • Views: 

    16
  • Downloads: 

    0
Abstract: 

When hearing the term fuzzy logic, the first thing that the mind immediately goes to is the field of non-deterministic arguments, and if we want to use a term close to it to make its meaning a little clearer, we can say that fuzzy logic is the same as Armagon's logic. It is an approximation that, ironically, the literal meaning of the word "argument" also refers to the clarification of something by the same thing (function input or armagon). Now the basic question is that while the educated mind of man has considered logic as equivalent to the mechanism of definite perceptions and accurate results for more than a thousand years, how can we talk about the invention of a logical method that is based on uncertainty? This question is doubly important from the aspect that our approximate arguments in the context of our lived life are more than our exact, definite and unambiguous arguments, that is, the same arguments that classical logic, whether in its old or new language, He leaves it aside and does not pay attention to them, and of course he is forced to do this because he does not have the tools to analyze these arguments. This is where we unknowingly remind ourselves of Bacon's angry regret, who considers Aristotelian logic to be a fantasy that causes waste and diversion of great talents over many centuries, a continuous and constant effort without helping a person to improve the quality of his life; A bunch of delusional nonsense, the result of which, perhaps in the most optimistic state, is Scott's adversary and the victory of futility in verbal disputes, of course, if we do not say only pointless boasting and scrutiny based on rhetoric, the fruit of which is the explanation of rational axioms. If Mr. Bacon knew about fuzzy logic, he would have corrected his view of logic, and to be more precise, he would have separated Aristotle from logic, not logic from science. One of the most important advantages of fuzzy logic is that it can introduce a way to enter the knowledge and experiences of experts into intelligent systems that are based on sensitive and practical decisions and choices and develop the previous absolute correct and incorrect logic. The basis of the analysis in the present research is to examine the components of two types of logic, i.e. classical logic and fuzzy logic, and clarify the understanding of the logical concepts and philosophical foundations of classical logic, as well as comparing it with the concepts of fuzzy logic. The research results indicate: these two types of logic have fundamental differences from an epistemological point of view; Aristotle's epistemological foundation is based on the certainty-oriented duality of "either this/or that", while the fuzzy epistemological foundation is based on a multi-valued system and that both logics are a contradictory understanding of what the mind and the external world are and the connection between They both give hands.

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Author(s): 

LEE C.C.

Issue Info: 
  • Year: 

    1990
  • Volume: 

    20
  • Issue: 

    2
  • Pages: 

    404-418
Measures: 
  • Citations: 

    2
  • Views: 

    213
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 
  • Year: 

    2019
  • Volume: 

    10
  • Issue: 

    1
  • Pages: 

    89-120
Measures: 
  • Citations: 

    0
  • Views: 

    703
  • Downloads: 

    0
Abstract: 

Continuous logic is generalization of first order logic to a many valued logic with an infinitary truth value set. Many of the results of classic logic and it's model theory have been generalized to continuous logic. Continuous logic not only has many uses in the mathematical analysis and in the model theory of mathematical analysis structures, but also has created new attitudes in classical model theory. Firstly, the present paper study the development of continuous logic from Ł ukasiewicz logic. Then we have a review on some of the most important basic results of continuous logic, including the completeness of the proof system and the compactness theorem. Finally, according to the concept of continuity with respect to the truth value set, we will introduce a kind of continuous logic that is based on continuous t-norm based fuzzy logics. This will lead to the introduction of two kinds of continuous logics based on Gö del logic and product logic. Then we developed some of the results of continuous logic suContinuous logic is generalization of first order logic to a many valued logic with an infinitary truth value set. Many of the results of classic logic and it's model theory have been generalized to continuous logic. Continuous logic not only has many uses in the mathematical analysis and in the model theory of mathematical analysis structures, but also has created new attitudes in classical model theory. Firstly, the present paper study the development of continuous logic from Ł ukasiewicz logic. Then we have a review on some of the most important basic results of continuous logic, including the completeness of the proof system and the compactness theorem. Finally, according to the concept of continuity with respect to the truth value set, we will introduce a kind of continuous logic that is based on continuous t-norm based fuzzy logics. This will lead to the introduction of two kinds of continuous logics based on Gö del logic and product logic. Then we developed some of the results of continuous logic such as the compactness theorem for these two logics. h as the compactness theorem for these two logics.

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