Journal of Circuits, Data and Systems Analysis: 2 (2)

Open Access Article

1 - A new method based on texture analysis for the classification of automatic detection of breast microcalcifications of mammography images
Zahra Maghsoodzadeh Sarvestani Jasem Jamali mhdi taghizadeh Mohammad h Fatehi

Mammography is a diagnostic technology used in screening programs to find breast cancer early. By using two techniques for image enhancement and highlighting breast tissue microcalcifications for the desired areas by regional ROI based on fuzzy system and also Gabor fil More

Mammography is a diagnostic technology used in screening programs to find breast cancer early. By using two techniques for image enhancement and highlighting breast tissue microcalcifications for the desired areas by regional ROI based on fuzzy system and also Gabor filtering method, the study's objective was to assess the viability of automatic separation of images of breast tissue microcalcifications and to assess its accuracy. The decision tree classification algorithm is used to categorize the clusters of breast tissue microcalcifications after the clusters have been identified. The samples that are thought to have microcalcification are next highlighted and masked for segmentation, and in the last step, tissue properties are extracted. Then, it was possible to distinguish between benign and malignant forms of segmented ROI clusters with the aid of an artificial neural network (ANN). The results of this work show a high accuracy of 93% and an improvement of sensitivity of 95%, which shows that the presented solution can be reliably applied to detect breast cancer.. Manuscript profile

Open Access Article

2 - Using Cross-Coupled model to design negative capacitor in CMOS technology
Mohsen Katebi Jahromi mohsen safavi

In this paper, the Cross-Coupled model is used to design the negative capacitor in CMOS technology, and then the negative capacitor and its application in various circuits are investigated and studied. The investigation and study of the negative capacitor and its applic More

In this paper, the Cross-Coupled model is used to design the negative capacitor in CMOS technology, and then the negative capacitor and its application in various circuits are investigated and studied. The investigation and study of the negative capacitor and its application in various circuits have been discussed In the following article, the proposed circuit was drawn in the Cadence software using 180 nm technology with a capacitor of 5pF, the dimension of the chip, considering the capacitor of 5 pF, is equal to 152/80 ×40/61 µm. The dimension of the non-capacitor chip is 32 ×61.40 µm. In the second step, the proposed circuit was simulated in ADS software and its frequency response and power consumption were checked. The simulation results show that with a load capacitor of 5 pF in the range frequency of 500 MHz, the negative capacitor is produced in the range of -1.5 to -20 pF, that is the power consumption is about 3.5 mW with a 1.8 V power supply. The wide frequency range of the negative capacitor, relatively low power consumption and good quality factor are the advantages of this design. Manuscript profile

Open Access Article

3 - Direct Power Control in Doubly-fed Wind Turbine Induction Generators using Fuzzy Controller
farhad bahadori-jahromi

Wind is a convenient and powerful source of energy. Power generation in a variable speed wind turbine is an interesting topic; since in wind energy converter systems, maximum utilization can be achieved at any speed. But this system needs its parameters to calculate the More

Wind is a convenient and powerful source of energy. Power generation in a variable speed wind turbine is an interesting topic; since in wind energy converter systems, maximum utilization can be achieved at any speed. But this system needs its parameters to calculate the optimal speed of the turbine. In this article, a control method for tracking the maximum power point in the wind energy converter system is presented, which has been used for simulation and design along with fuzzy control by Mamdani method. In this article, the wind energy converter system is a two-fed induction generator, which is connected to the grid with a rotor and a stator. The input of the control system is the difference between the desired speed of the generator and its actual speed. The optimal speed is the rotational speed at which the generator receives the maximum power from the wind turbine. After conducting simulations and designing a suitable fuzzy controller for the system, it was found that the incorrect selection of a parameter has an adverse effect on the control process of a system. Manuscript profile

Open Access Article

4 - Modeling of Energy Storage Systems in Microgrids with the Aim of Reducing Cost and Environmental Pollutants
Mehdi Motevasel

In this article, in order to improve the performance of a micro-grid, a complete and practical model for electric energy storage is presented. In order to optimize the energy in the micro-grid, a dual-purpose objective function has been considered, and the main purpose More

In this article, in order to improve the performance of a micro-grid, a complete and practical model for electric energy storage is presented. In order to optimize the energy in the micro-grid, a dual-purpose objective function has been considered, and the main purpose of this function is to simultaneously minimize the total operating costs and environmental pollutants by considering the uncertainty in the micro-grid. In the optimization part, due to the large search space of the above problem and its non-linearity, the proposed improved particle swarm algorithm has been used. Comparing the answers obtained through the above optimization algorithm with other optimization algorithms shows that the above algorithm is more efficient and has higher speed and accuracy. Finally, the proposed algorithm for managing the electrical energy of the entire micro-grid, the working points of all scattered production sources, how to charge and discharge electrical energy storage devices, as well as the amount of electrical power exchanged with the upstream network, in the condition that the total operating costs and environmental pollution Production is simultaneously minimized and optimized. Manuscript profile

Open Access Article

5 - Optimizing power consumption and delay in designing full adder based on CMOS technology
Vahid Dehghan Mohsen Katebi Jahromi

Abstract: The aim of this article is to investigate the optimization of power consumption and delay in the design of full adder based on CMOS technology. Different ideas that have existed in the implementation of adder circuits have been simulated. In the implementatio More

Abstract: The aim of this article is to investigate the optimization of power consumption and delay in the design of full adder based on CMOS technology. Different ideas that have existed in the implementation of adder circuits have been simulated. In the implementation of the adder cell circuit, in some articles the input classes are different and in some others the output classes are different. In different articles, complementary CMOS logic, ratio, complementary pass transistor, transfer gates and majority function have been used. In this paper, a full adder based on CMOS technology is designed and simulated by HSPICE software. The results show that the optimization of power consumption and delay in the design of the full adder has been done effectively using the proposed method, and the simulation results show the superiority of the proposed adder over other models. Manuscript profile

Open Access Article

6 - Investigation and simulation of power control plan in energy harvesting telecommunication systems
Nasrollah Bayat Azar Mahmoodzadeh FATEMEH SAFAEI

In the upcoming research, our effort is to study energy-harvesting telecommunication systems with one transmitter-one receiver for a Gaussian white noise telecommunication channel with fading. Harvested energies and channel fading are independent and identically distrib More

In the upcoming research, our effort is to study energy-harvesting telecommunication systems with one transmitter-one receiver for a Gaussian white noise telecommunication channel with fading. Harvested energies and channel fading are independent and identically distributed processes, and information about harvested energies and channel gain is causally provided to the transmitter. The transmitter is equipped with a rechargeable battery with limited storage capacity.Our goal is to obtain an online power control scheme that maximizes the average data transmission rate over a telecommunication interval of unlimited length. A low-complexity algorithm based on online convex optimization is proposed to guarantee the energy availability of the energy harvesting node and to maximize the long-term average data transmission rate. The proposed algorithm limits the maximum transmission power by knowing the state of charge and allocates the transmission power based on historical information. Simulations have been performed to show the effectiveness of the algorithm by considering input energy with different distributions, as well as channel coefficientswith different distributions. The proposed algorithm performs better than its peers in different energy harvesting rates. Manuscript profile

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