ملخص البحث :

Covid-19 is the name of the coronavirus that initially appeared in Wuhan, China at the end of 2019. Since its appearance, many people over the world have been infected with various illnesses ranging from the common flu, cold, headache, cough and breathing syndromes, which represent the virus’s worst and most serious illness because it causes difficulty breathing for the person and can increase the virus’s death rate if treatment is not provided immediately. The goal of this project is to evaluate confirmed cases and deaths using machine learning techniques and predicting methodologies. The results show that the k-means method can analyze the data and provide accurate results, and that both of the Exponential and Moving methods can predict results. According to the findings, machine learning techniques and forecasting methods performed best when used in tandem

ملخص البحث :

Data mining methods are used to predict and compare ages of people with Parkinson’s disease and so are considered a critical part in the medical community. The amount of data stored in the medical section database is increasing rapidly. There is a system used to arrange the results of ages of Parkinson disease patients by years. In this paper, a data mining technique called the k−means clustering algorithm for analyzing data is implemented. This technique is applied on a hospital database and analyzes the performance successfully and so is useful in giving accurate results and making an effective decision by the Ministry of Health in Iraq and related parties to find appropriate solutions.

ملخص البحث :

Protection relays design and manufacture have arrived to a new level of advancement; hence, numerical relays have appeared recently. (ey combine all the functions of monitoring, control, and protection in one device. Also these relays have the ability to communicate with each other to share statuses and orders using GOOSE (generic object-oriented substation events) messages based on communication protocols such as IEC61850. In this paper, a proposed method for overcurrent (OC) relay coordination has been introduced based on numerical relay features of several setting groups and communication capability. (is work supposes that the coordination between feeder, bus section, and incomer protection relays, in a substation of single busbar configuration with bus sectionalizer (i.e., bus section), depends on the status of the bus section circuit breaker (CB) as a criterion for determining active relay setting group, to achieve a faster tripping action. ETAP has been used as a simulation software environment. And the simulation results show the advantages of the proposed method in reducing the time needed by the relay to clear the electrical fault. Siemens SIPROTEC series have been used as an example of numerical relays, specifically 7SJ64 as OC relay, which exists in the ETAP library.

ملخص البحث :

Among the various sources of renewable energy, wind power is one of the fastest growing and most promising sources of electricity in the world, and it is considered as a free energy source. In spite of that, harmonics are regarded as a problem faced by wind system due to its power electronic converters. In general, it is very impotant to provide electricity with less harmonically polluted voltage, so in this paper, the design of a tuned filter that can reduce the total harmonic distortion of a synchronous generator (SG) in wind energy system is proposed. The simulation results show that the proposed design eliminates a 7th harmonic effectively, and the waveform output of voltage and current are in low total harmonic distortion (THD). The proposed design improves the power quality, in addition to the improving of the other factors, resulting in reduced loss of power and enhanced performance under abnormal conditions.

ملخص البحث :

The security-reliability tradeoff (SRT) in free-space optical (FSO) communications is the most critical property to highlight, especially with respect to the development of wireless optical communications. In this paper, opportunistic scheduling selection techniques are used to improve the SRT of multiuser FSO systems under the combined influence of atmospheric turbulence with Fisher-Snedecor F distribution, generalized pointing error, and path losses due to foggy weather. Due to the broadcast nature of wireless optical propagation, the optical transmission from the transmitting users to the legitimate receiver can be easily intercepted by eavesdroppers. Therefore, an optimal user scheduling (OUS) scheme is proposed in this work to protect the legitimate wireless transmission from eavesdroppers, where a user with the highest secrecy capacity is scheduled to transmit his confidential information to the receiver. Closed-form expressions for the outage probability, interception probability, and SRT are derived for the conventional round-robin scheduling (RRS) and the proposed OUS. In addition, an asymptotic analysis for the outage probability, interception probability, and SRT is performed to provide insight into the impact of user scheduling on the system performance. We also propose the use of ‘‘friendly jamming’’ techniques, where the user with the lowest secrecy capacity is selected by the authorized receiver to jam the existing interceptor. Finally, another SRT is formulated to determine the impact of a friendly jammer on the secrecy performance of the system. The results show that the proposed OUS outperforms the RRS in terms of intercept probability and SRT performance. The obtained exact and asymptotic results are validated by Monte-Carlo simulations.The security-reliability tradeoff (SRT) in free-space optical (FSO) communications is the most critical property to highlight, especially with respect to the development of wireless optical communications. In this paper, opportunistic scheduling selection techniques are used to improve the SRT of multiuser FSO systems under the combined influence of atmospheric turbulence with Fisher-Snedecor F distribution, generalized pointing error, and path losses due to foggy weather. Due to the broadcast nature of wireless optical propagation, the optical transmission from the transmitting users to the legitimate receiver can be easily intercepted by eavesdroppers. Therefore, an optimal user scheduling (OUS) scheme is proposed in this work to protect the legitimate wireless transmission from eavesdroppers, where a user with the highest secrecy capacity is scheduled to transmit his confidential information to the receiver. Closed-form expressions for the outage probability, interception probability, and SRT are derived for the conventional round-robin scheduling (RRS) and the proposed OUS. In addition, an asymptotic analysis for the outage probability, interception probability, and SRT is performed to provide insight into the impact of user scheduling on the system performance. We also propose the use of ‘‘friendly jamming’’ techniques, where the user with the lowest secrecy capacity is selected by the authorized receiver to jam the existing interceptor. Finally, another SRT is formulated to determine the impact of a friendly jammer on the secrecy performance of the system. The results show that the proposed OUS outperforms the RRS in terms of intercept probability and SRT performance. The obtained exact and asymptotic results are validated by Monte-Carlo simulations.