Determine Optimal Adjustable Parameters of The Simple Fractional-Order Systems with The Lowest Pole via Particle Swarm Optimization (PSO) Algorithms

Determine Optimal Adjustable Parameters of The Simple Fractional-Order Systems with The Lowest Pole via Particle Swarm Optimization (PSO) Algorithms

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Part of #Determine Optimal Adjustable Parameters of The Simple Fractional-Order Systems with The Lowest Pole via Particle Swarm Optimization (PSO) Algorithms# :

Publishing year : 2013

Conference : The first national congress of electrical engineering in Iran

Number of pages : 7

Abstract: This paper describes a procedure for determining optimal adjustable parameters of simple fractional order systems. In some cases such as: identifying fractional order systems, to obtain adjustable parameters with conventional identification methods, leads to solve complex nonlinear optimization problems and this is one of the challenging problems. Therefore, in this paper, with the assumption of having input-output data corrupt with noise, by means of the particle swarmoptimization algorithm and taking into account the specific model structure of the linear combination, the method presents a good or acceptance approximation of the optimally adjustable parameters of the fractional order Systems Because of the presence of special conduction in fractional order systems, the necessity of fractional ordering for such are duplex. Finally, by simulating several proper systems in noisy conditions, we determine the optimal parameters that gained results from it shows the effectiveness of this procedure.

Review on Dispersion Modeling in Air Quality

Review on Dispersion Modeling in Air Quality

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Part of #Review on Dispersion Modeling in Air Quality# :

Publishing year : 2006

Conference : 7th International Congress on Civil Engineering

Number of pages : 12

Abstract: The dispersion of hazardous and toxic gases is an important issue in the framework of risk analysis studies associated with it. In quite a number of cases, accidental releases of hazardous or toxic gases are complicated by the fact that the gases are heavier than ambient air. For estimating hazard zones associated with their accidental releases to the atmosphere, we can use some practical and well-tested models. One of the models that can be used is 3D models. These models employ 3-D partial differential equations describing the conservation of mass, momentum and energy. A 3D model requires a turbulence closure assumption to model Reynolds stresses. The mathematical modeling of the dispersion of gases is in most cases done to obtain a tool for predicting the behavior of a heavy gas cloud resulting from the escape of some hazardous material. On the other hand, Dispersion is also the most important in pollution modeling, especially in air quality modeling. It can be caused by atmospheric turbulence or density difference between heavy and low air. In this paper, we reviewed some of the past and recent dispersion modeling in air quality and we tried to review this part of dispersion models in air quality, which considered turbulence and density differences.

Damage Detection in Structures with Complex Wavelet Transform using modal Analysis Data

Damage Detection in Structures with Complex Wavelet Transform using modal Analysis Data

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Part of #Damage Detection in Structures with Complex Wavelet Transform using modal Analysis Data# :

Publishing year : 2012

Conference : Fourth International Conference on Reinforcement

Number of pages : 13

Abstract: Excessive loading earthquakes over the structure of fracture structure and other unpredictable forces during the life of the structure are among the unavoidable ones that cause environmental changes in one structure and endanger the health of the structure, since these events reduce the length of the structure The usefulness of the structure is determined by identifying the damage to it before it becomes critical. This is especially important in the important cases where any damage to them, in addition to causing material damage, is also more important. According to Satpathi and Heo Wang (1331 CE) Federal Railways estimates that nearly 35% of the US bridges have 236,000 of 576,000 both in terms of construction and operation. The cost of repairing and repairing them has been estimated at more than a million dollars. An effective system can significantly reduce costs and ceilings. Provides a much higher level of safety for operators.

Design of R.C Building under Moderate Earthquakes

Design of R.C Building under Moderate Earthquakes

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Part of #Design of R.C Building under Moderate Earthquakes# :

Publishing year : 2005

Conference : The 2nd International Conference on Concrete and Development

Number of pages : 11

Abstract: Most of the seismically active regions of Pakistan fall under the category of moderate seismic zones. The trend of construction of reinforced concrete multistory storey buildings has gained its popularity all around the world due to its weather-resistant quality. The economy in design and the desired performance of a multistory building under the combined action of lateral force and gravity loads is achieved by performing a redistribution of moments determined from analysis. The moment redistribution is carried out at the joints and it is difficult to include its variation along the span. In this paper, a simple approach has been suggested to generate an approximate moment for the redistribution of moments. For the explanation of approach, an illustrative model of a seven-storey reinforced concrete building is selected and designed for seismic zone 2B. The model has no irregularities in both plan and elevation. Several suggestions and recommendations are being drawn which can be considered / used for the design and construction of Reinforced Concrete Multistory Building Structures in moderate seismic zones.

KHB# Protocol, A Lightweight Mutual Authentication Protocol based on the HB# for Low-cost RFID tags

KHB# Protocol, A Lightweight Mutual Authentication Protocol based on the HB# for Low-cost RFID tags

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Part of #KHB# Protocol, A Lightweight Mutual Authentication Protocol based on the HB# for Low-cost RFID tags# :

Publishing year : 2015

Conference : International Conference on Nonlinear Systems and Optimization of Electrical and Computer Engineering

Number of pages : 12

Abstract: The Internet of Things (IoT) is a novel paradigm that will get a very good position in the scenario of modern wireless telecommunications. The key components of the IoT will be RFID systems. Since RFID tags are expected to remain extremely limited to reduce the cost of RFID implementation, RFID designers can not depend on traditional encryption algorithms to protect the system. HB # protocol, however, solves many problems of HB family protocols, but this protocol is vulnerable to Man In the Middle (MIM) attack. In addition, HB # only provides the authentication of the tag for the reader and the mutual authentication is not described. Also, in this protocol tracking and unwanted recognition of tags is possible. Based on our knowledge, there are no MIM attacks against HB-MP + still. But in this paper we combine the advantages of HB # and HB-MP + protocols and propose a secure protocol that addresses the practical problems of HB # and HB-MP +. In addition, this protocol provides mutual authentication, prevents unwanted recognition, prevents MIM attacks and satisfies the basic security goals that are required for RFID systems.

Price Insurance Theory and Bazaar Hedging

Price Insurance Theory and Bazaar Hedging

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Part of #Price Insurance Theory and Bazaar Hedging# :

Publishing year : 2010

Conference : The 17th National Conference and the 3rd International Insurance and Development Seminar

Number of pages : 12

Abstract: Bazaars are important institutions in most oriental countries. Their impacts on life for people are immeasurably extensive and significant. In this paper, we link hedging and market activity and explain risk management as an alternative insurance device. We make several key observations as our foundation for a market for trading in particular ownership and hedging dynamics. We are interested in popular practices and the most profitable companies over time. We discuss habits, implicit rules, masks, disinformation, privileges and local monopolies. By dividing hedging into the intended and unintended we discuss the significance of risk and uncertainty. Therefore, the economy of market hedging is elaborated as an insurance against the uncertainties of the market in an oriental market.

PRENATAL DIAGNOSIS AND BIOETHICS

PRENATAL DIAGNOSIS AND BIOETHICS

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Part of #PRENATAL DIAGNOSIS AND BIOETHICS# :

Publishing year : 2005

Conference : International Congress on Biological Ethics

Number of pages : 5

Abstract: "Bioethics" means the study of ethical issues arising from human involvement with life. Many concepts of bioethics can be traced in religions and cultural patterns that may or may not share some universal ideals. This prenatal diagnosis of specific diseases and cases has become apparent to thoughtful medical geneticists and practitioners.
Decisions of undertake prenatal diagnosis, with more emphasis on Iran, involve a complex assessment of the best interests of the fetus and parent's interest. Parents often accept a recommendation for prenatal diagnosis that is collaboratively approached, especially if the test is proven effective and have low maternal / fetal risk as well as low costs. Decisions by parents especially pregnant women about fetal diagnostic clearly include considerations as to what is best for the fetus. Thus, prenatal diagnosis poses a potential conflict between the parent's own best interest, ideology, and very importantly the belief in one side and the perception of the best interests of the fetus. Therefore, in recommending prenatal diagnosis, physicians should respect the parental faith, choice and assessment of risk. In addition, of prenatal diagnosis is linked to selective abortion, then the autonomy of the fetus and the religious faith of the parents could lead to a conflict.
From the prenatal diagnosis experiences in Iran, several other concerns have also been noticed by geneticists. These concerns were as follows: fairness of access to genetic services, indication for prenatal diagnosis, confidentiality problems, counseling incapacitated persons, etc. One of the most important items to be concerned about the parents was found to be abortion choices and legal restrictions due to the Islamic faith and Islamic practices practiced in Iran. Considering these factors, a code of ethics practical in Islamic countries such as Iran seems to be very necessary to be proposed.

A Low-Voltage High Gain CMOS Op Amp for Switched-Capacitor Application in a Digital 90nm CMOS Technology

A Low-Voltage High Gain CMOS Op Amp for Switched-Capacitor Application in a Digital 90nm CMOS Technology

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Part of #A Low-Voltage High Gain CMOS Op Amp for Switched-Capacitor Application in a Digital 90nm CMOS Technology# :

Publishing year : 2010

Conference : Third National Conference on Computer Engineering and Information Technology

Number of pages : 5

Abstract This paper discusses the design of a low-voltage, high gain, fully-differential CMOS Op-amp in a low voltage (VDD = 1.0V) 90nm CMOS process. This Op-amp is ideally suited for switch-capacitor circuits and simulations to show unity gain bandwidth of 651MHz with 1pF load capacitor and a DC gain of more than 107dB. The phase margin is around 58o. The circuit topology is a two-stage folded cascode structure with regulated cascodes for gain boosting

Improving production temperature of polymer modified bitumen by waxy materials

Improving production temperature of polymer modified bitumen by waxy materials

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Part of #Improving production temperature of polymer modified bitumen by waxy materials# :

Publishing year : 2011

Conference : International Conference on Polymer Processing

Number of pages : 8

Abstract: Although the polymer modification of road grade bitumen is widely used to improve performance characteristics, consideration of sustainable development would offer a challenge in this way. Most of the polymers used in polymer modified bitumen, such as SBS and EVA, would increase the viscosity of approximately significant amounts throughout the temperature range, as a result of these PMB mixing and blending temperatures would be much higher than non-modified ones. In the other hand, the use of waxy materials to produce warm mix asphalts and reducing energy consumption and reducing the CO2 generation level is a new common practice, especially in Europe. The purpose of this research was to combine these two types of additives (Polymers and Waxy Materials) to reach high performance bitumen with moderate production temperatures. Penetration grade tests and rheological analysis performed with a dynamic shear rheometer (DSR) were used to test the performance of the samples. Rotational viscosity measurements in a wide range of temperatures were also performed using a Brookfield RV viscometer on samples to observe changes in production temperatures. In this study, SBS and EVA were used as polymer modifiers, and PE wax and EBS were used as waxy materials . Much better performance characteristics such as higher G * / Sin and higher upper PG limit were due to the use of a combination of polymers and waxy materials in contrast to each of the additives alone. Considerable reduction in the production temperatures were seen as a means of adding waxy materials. PE wax was shown to be less effective than EBS in both cases. Improvement in storage stability of polymers was also observed in the case of using experimented waxy materials

Application of Multi-criteria Analyses in Road Safety Appraisal and Enhancement

Application of Multi-criteria Analyses in Road Safety Appraisal and Enhancement

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Part of #Application of Multi-criteria Analyses in Road Safety Appraisal and Enhancement# :

Publishing year : 2005

Conference : First International Conference on Road and Road Accidents

Number of pages : 15

Abstract: Information pertinent to national road accidents for nineteen Asia Pacific countries was extracted and compiled in the study database. After univariate analyzes of the database variables, they were deployed in the safety and accident index development. For road safety appraisal, multi-criteria analyzes of data envelopment analyzes, DEA, were utilized. Evaluation of several combinations of inputs and outputs DEA led to the selection of an output oriented DEA for detailed national road safety enhancement and evaluation. For years 1980 and 1994, different output oriented DEAs with constant and variable returns to scales were deployed. For most of the selected countries and the study 15-year period, the developed road safety and accident index trends and DEA results were far from ideal, illustrating the major concerns with national road safety issues