Journal of Al-Farabi for Engineering Sciences
Machine Learning-Based Prediction of Smartphone Addiction Using Behavioral Usage Features
The rapid growth of smartphone usage has raised serious concerns regarding problematic and addictive usage behaviors, which may negatively affect sleep quality, productivity, and psychological well-being. Despite increasing research attention, existing studies often rely on self-reported scales or limited analytical approaches, reducing objectivity and generalizability. This study aims to develop a data-driven framework for predicting smartphone addiction using behavioral usage features and to identify the most influential predictors of addictive behavior. A publicly available dataset consisting of 500 users (Kaggle, 2024) was analyzed, encompassing demographic and behavioral variables including age, daily screen time, social media notification frequency, sleep duration, and number of installed applications. Four supervised machine learning classifiers—Random Forest (RF), Support Vector Machine (SVM), Logistic Regression (LR), and Decision Tree (DT)—were trained and evaluated under identical conditions using an 80/20 stratified split with 10-fold cross-validation. Class imbalance was addressed using SMOTE applied exclusively to the training set. Results indicate that daily screen time, notification frequency, and sleep duration are the strongest predictors of smartphone addiction. The Random Forest model achieved the highest performance (Accuracy = 88.4%, F1-score = 0.898, AUC = 0.923). Correlation analysis confirmed strong associations between addiction status and screen time (r = 0.721, p < 0.01), notification frequency (r = 0.653, p < 0.01), and a significant negative association with sleep duration (r = −0.611, p < 0.01). Approximately 58.2% of users in the sample were classified as addicted. The findings demonstrate that behavioral usage data can effectively support automated prediction of smartphone addiction and contribute to the development of real-time digital health monitoring tools. This study provides a reproducible comparative machine learning framework and highlights key behavioral indicators suitable for early detection and clinical screening applications.
EMBER-Based Static Malware Detection: A Critical Review of Accuracy, Explainability, and Temporal Robustness Trade-offs
Static analysis-based malware detection of Portable Executable (PE) files has evolved remarkably since the release of the EMBER dataset in 2018. Yet evaluation methodology and model explainability continue to suffer from critical challenges that limit real-world implementation. This literature review explores five thematic clusters: Traditional Machine Learning, Deep Learning, Ensemble and Hybrid Architectures, Explainable AI (XAI), and Zero-day Detection with Concept Drift. The review analyzes 27 primary studies and 15 supporting references for a total of 42 studies published between 2018 and early 2026. The review shows that gradient boosted decision tree steadily offers better baseline performance. In comparison, ensemble and hybrid architectures show the highest accuracy overall. That being said, this comes with the cost of reduced explainability and an increase in computational overhead. Deep Learning methods make the performance gap thinner but bring up transparency and resource concerns. And the emerging Large Language Model (LLM)-based approaches remaining premature and unverified. Across all of the five clusters, six intersecting gaps are identified, the most notable being the near-universal dependence on random instead of temporal train/test splits. Other gaps include the lack of sufficient false positive rate reporting at operational thresholds, and the consistent separation between explainability and detection performance. Critically, no reviewed study achieved a successful integration of ensemble level accuracy, embedded explainability, and temporal oriented evaluation within a single framework. It’s a gap that this review specifically recognizes and highlights as the most crucial priority of the research in this field. The gaps explored can be addressed with the seven future research directions presented later in this review. The most critical one of them is the incorporation of ensemble accuracy, explainability and temporal evaluation in a unified framework. This is a combination that no reviewed study has achieved yet.
Leakage-Free Segmentation-Based ANN for Crack Localization and Depth Estimation in Cantilever Beams
This study develops a controlled and leakage-free learning framework for vibration-based crack characterization in a metallic cantilever beam using compact relative frequency shift (RFS) features. A fully numerical methodology is implemented in MATLAB based on a one-dimensional Euler–Bernoulli finite-element model, in which the cracked beam element is represented through a local stiffness matrix and statically condensed into an equivalent element for global assembly. A database of 1200 labelled damaged scenarios is generated by varying crack location over 100 beam elements and crack depth over 12 levels from 0.20 to 2.40 mm. Each scenario is represented by a six-dimensional RFS vector computed from the first six bending natural frequencies, while the outputs are the normalized crack location and crack-depth ratio. All models are trained and evaluated under a single leakage-free Master Split (70/15/15) to ensure fair and reproducible comparison. The baseline artificial neural network achieves test-set mean absolute errors of 2.992 mm for crack location and 0.0251 mm for crack depth. Under the same split, a segmentation-based coarse-to-fine strategy reduces these errors to 1.245 mm and 0.0211 mm, respectively. The main contribution of this work is a reproducible leakage-free segmentation-based ANN framework that improves RFS-based crack localization and depth estimation within a controlled numerical setting.
A Suite of Interpretable Hybrid Systems with a Voting Mechanism for Detecting Financial Fraud in Digital Forensics
Financial fraud has become a critical challenge in modern digital payment systems as financial transactions increasingly rely on online platforms. Despite advancements in payment technologies, detecting fraudulent activities remains difficult due to evolving attack strategies and system vulnerabilities. Traditional fraud detection methods suffer from high false positive rates, inability to adapt to new fraud patterns, and limited interpretability, especially when using complex models that function as black boxes. This study proposes a multilayered fraud detection framework that integrates Decision Tree (DT) and Fuzzy Inference System (FIS) within a unified architecture. Initially, the Synthetic Minority Oversampling Technique (SMOTE) is applied to address class imbalance in the dataset, followed by constructing a Decision Tree model to extract clear and interpretable decision rules. These rules are then transformed into fuzzy logic rules within the Fuzzy Inference System to handle uncertainty and borderline cases more effectively. Finally, a hard voting mechanism is employed to combine the outputs of both models and produce a robust final decision. The proposed model was evaluated using real-world financial transaction data. Experimental results demonstrated an accuracy of 96.75% ± 0.12, outperforming several baseline models such as Random Forest, CNN-SVM, and rule-based systems. The findings indicate that the proposed hybrid framework enhances detection accuracy, reduces false alarms, and improves interpretability, making it a reliable solution for real-time financial fraud detection.
Process Mining and Business Intelligence for the Detection of Suspicious Transactions
Digital forensic investigations still have a hard time finding suspicious activity in huge financial datasets. When it comes to finding complicated behavioral patterns and little abnormalities in big transactional databases, traditional database forensic methods have their limits. This is because they typically depend on human analysis or searches that have already been set up. This work presents a data forensic system grounded on process mining to assist in identifying suspicious activity inside financial systems. The framework has three main parts: process discovery, which uses Petri net representations to make diagrams of processes to event logs; conformance checking, which at first compares the data observed with the uncovered method framework; and clustering and behavior analysis, which puts suspicious cases at the top of the list based on unusual traces. We evaluated the suggested method on an actual-world financial database and put it through its paces utilizing the ProM mining framework. The trials showed that the strategy works to find strange patterns of transactions while making it easier to find any fraudulent activity. The suggested process mining-based structure is better than existing methods since it is organized, scalable, and automated.
An Intelligent Deep Residual Network for Automated Lung Cancer Detection Using ResNet50
Lung cancer accounts for one of the leading causes of cancer death in the world; patients' prognosis can be greatly improved when diagnosed and predicted accurately as early as possible. The proposed intelligent deep learning models will enable automatic identification and classification of lung cancer from histopathological images. The architecture used was a deep residual network based on ResNet-50, trained on approximately 15,000 lung histopathology images in three classes: adenocarcinoma (ACA), squamous cell carcinoma (SCC), and normal tissue (N). Different testing protocols were performed to objectively evaluate the proposed model robustness and generalization capabilities, including prospective tests using images from a single dataset and external tests using images from other sources. In the experimental results, the overall accuracy for classification using this proposed model was 99.96%, implying a strong classification ability. Additional evaluation with a confusion matrix and ROC curve confirmed the discriminative power of the model, and external testing demonstrated that the model generalized well when tested on unseen samples from different sources. The findings indicate that the effective ResNet50-based deep learning technique may be employed as a pioneering tool for automatic lung cancer diagnosis, while also supporting pathologists in improving precision and efficiency.
Classification of ECG Signals Using CNNs: An Improved Model for Cardiac Disease Diagnosis
The analysis of ECG signals poses significant challenges as a result of the complex electrical patterns of the heart and issues related to the imbalanced data. Addressing such challenges requires having advanced methods and models for the purpose of ensuring accurate diagnoses and improving the results of the treatments. The combination of the ECG analysis with the approaches of artificial intelligence (AI) became a priority for the health-care improvement, especially as the prevalence of heart diseases keeps rising worldwide. In the present study, Convolutional Neural Networks (CNNs) have been used for creating a classification model for the ECG signals, tested across the balanced as well as the imbalanced data structures from MIT-BIH Arrhythmia data-sets. Results have shown consistently high accuracy of classification, which exceeds 98% in all of the cases. For example, the model has been able to achieve 98.36% accuracy with the unbalanced data after 20 cycles (epochs) of training with the use of the early stopping. When the number of the cycles has been increased to 104, with extended patience setting of 25, accuracy has been increased to 98.76%. Balanced data had produced outcomes that are slightly better, with the model reaching an accuracy level of 98.88% in 25 cycles and 98.45% in 20 cycles. These findings have highlighted the importance of the training cycle count as well as the data balance in increasing the accuracy of the model. Moreover, early stopping proved beneficial in maintaining high performance and training efficiency in ECG signal classification.
A close look at the H-C phase Diagram and Hydrocarbon Reservoir Classification and Behavior
H-C phase diagram of reservoir fluids is an important tool used in explaining reservoir fluids behavior during the life period of any reservoir. In this paper, detailed analysis of certain terms of the Pressure–Temperature Diagram (P-T diagram) are presented and discussed. Some of these terms are redefined since the already existing definitions does not fit all cases and conditions of reservoir pressure and temperature, and hence, new definitions are given to such terms so as to make them fit all possible conditions that might exist in the reservoir. Special attention was given to explain and analyze the phase behavior inside the phase envelope (two phase region) of the P-T diagram. Among such terms for example, new definitions and analysis are given to the quality lines to give them much more interest and importance in the P-T diagram as they should be given than just representing the percentages of both liquid and gas phases. The new given definition will open new interpretations and add more interesting and valuable importance to the quality lines. Another new definition is given herein to the Cricondenbar Pressure to make it fit all possible conditions on the P-T diagram since the existing definition does not fit all pressure and temperature conditions. This paper also include some explanations regarding the retrograde gas condensation process and region on the P-T diagram. Finally, the herein mentioned factors and definitions will add more important and wider interpretations and applications for the P-T Diagram for a better understanding of H-C reservoirs. Such interpretations might be applied, also to the fluid flow control inside the reservoir and in the choosing of the best EOR method to apply whenever and wherever it is necessary.
Bubble Point Pressure (Saturation Pressure)
Investigation of Wear Rate of Passenger Airplanes Tyres During Landing
A real, functioning copy of one main landing gear wheel is used to show the landing impact of an aircraft. By minimizing abrasive sliding between aircraft tires and runway surfaces right after touchdown, this study seeks to identify possible tire-life improvements. An experimental investigation of size 22 X 5.5, type VII airplane tyres was conducted to evaluate the wear and related properties of temperature and friction caused while braking. One way to evaluate the tire's performance on surfaces with uniform slip ratios, including asphalt, concrete, and slurry seal, was to gear it up to the driving wheel of a ground vehicle. The range of slip ratios often attributed to an airplane's braking system was covered by the data gathered during dry runway operations. Our results show that cumulative tire wear is affected by runway surface features, increases with increasing slip ratio, and changes linearly with miles. The differing wear rates associated with the various surfaces may be used to rank runways based on tire wear.
The Additives Impact the Gel Strength of the Water Based Drilling Mud
One of the most important functions of drilling mud is its ability to suspend the rock cuttings during drilling cease, this ability is related mainly to gel strength. Gel strength is caused by the attractive forces between the active particles of bentonite (clay) during the static period. Sodium-based bentonite concentration has a direct effect on the gel strength. In addition, cement contaminants may encounter drilling mud as a result of casing string cementation which in turn also leads to a noticeable impact on gel strength. As consequence, it is vital to observe drilling mud gel strength continuously to identify efficient drilling mud functions. In this paper, an experimental study was performed via a shearometer, the aim of this study is to investigate the effect of the variety of the weights of sodium-based bentonite and cement slurries on the gel strength of water based mud. To analyze the influence of bentonite additives, four drilling mud samples were prepared with bentonite weights; 40, 60, 70, and 80 gm respectively, and gel strength was measured at each weight. While cement contamination had been examined by preparing three drilling mud samples contaminated with 2 gm, 3 gm, and 5 gm of class G cement. The results showed that an increase in bentonite quantities leads to rising in gel strength directly. The findings also showed that gel strength increased as the level of cement slurries raised. Furtherer increase appeared from 20.2 to 42 lb/100 ft2 when cement weight increased from 2 to 5 gm respectively.
Employing traditional heritage elements in shaping contemporary architecture
The architecture of Baghdad suffers from a lot of problems, ranging from the application of materials and form to the expression in contemporary buildings that not only change the traditional architectural identity but also the performance of the buildings that meet the needs of the local population. This unfortunately increases the damage related to cultural values and environmental sustainability regardless of adaptable solutions that can improve the energy efficiency of building performance. The traditional elements of architecture in the city of Baghdad represent a source of inspiration for contemporary architecture and are exploited to enhance its identity and spatial affiliation. The process of exploiting these elements takes place on several levels, including those that achieve environmental, symbolic, or formal aspects. Hence, the research problem crystallizes in the lack of clarity on the levels of benefiting from the elements of traditional local architecture in enhancing the identity of contemporary architecture and its spatial affiliation. The research aims to shed light on how to analyze the components of the performance and value of traditional architecture in the city of Baghdad, which is rich in cultural heritage and which can be translated into contemporary architecture that creates continuity in traditional cultural identity. The study uses the theoretical descriptive approach through which data is collected on the vocabulary of local traditional architecture of the city of Baghdad and its roles at the environmental, formal, and aesthetic levels to arrive at a main vocabulary for the theoretical framework, which is represented in four basic vocabulary represented in the aspects of form formation, dependence on the environment, and the interface. , aesthetic aspect, and cultural value. These vocabulary were applied to two recently elected projects in the city of Baghdad, through which the four indicators and the role of each of them in enhancing the identity of contemporary architecture and its spatial affiliation were analyzed.
Dynamic Characteristics of Continuous Stirred Tank Reactor (CSTR) Part I: Adiabatic Reactor
CSTR is a very common reactor type which is widely used in the chemical process industries. It is well-known that its dynamics are nonlinear with a multi-mode behavior. This aspect was and still is an active subject of research with the investigative approach being either mathematical or experimental involving specific reaction systems. In this work a different approach is adopted in which the variation of the damping coefficient value of the linearized reactor’s transfer function is investigated over chosen values/ranges of relevant parameters. Our results indicate that an adiabatic type of such a reactor in which a liquid-phase, 1st-order, irreversible, exothermic chemical reaction takes place can be unstable or stable. If stable, it is either critically damped or overdamped with the latter mode being overwhelming; however, it is never underdamped. Furthermore, even when stable its dynamic behavior can be peculiar depending on certain values of some parameters.
Pollution of Water’s direct effect in Iraq on the Public Health & Safety
The devastating effects of pollution of Water are significant, affecting human life, animal life and vegetation at the same time. Recently, Iraq has experienced the effects of pollution of Water, destroying an abundance of plants and many animals. Pollution of Water is one of the mostly deadly and severe problems facing humankind currently. This study analysed the effects of heavy metals Pb, like Cr, Zn and Fe in water for drinking. The findings revealed an upsurge in the number of cholesterol, urea, and white blood cells among people in Basra, Baghdad, and other urban areas. It was also found that these individuals were more likely to have fever, diarrhea, kidneys, and respiratory problems. Recent studies have revealed that pollution of Water in Iraq is caused by a variety of factors, i.e., solid pollutants, chemicals, and microorganisms. Unfortunately, due to the current state of war, there is not much concentration on water treatment plants (WTPs) resulting in a decrease in the quality of the supplied water. Due to the lack of wastewater treatment facilities in most Iraqi cities, sewage is simply discharged into the river. In addition, supply of water and sanitation systems in some major cities have been damaged and the two networks are jointly linked.
A Review on Common Approaches Used for Graphene Characterization
Evaluating Urban Thermal Comfort through a Holistic Micro-Climate Model: Baghdad as a Case Study
Urbanization greatly affects the change in local climate conditions. To address this, urban vegetation needs to be expanded to help dissipate excess heat by promoting evaporation. This study aims to reconnect the urban corridors and spaces of the Al-Mustansiriya region in Baghdad city through a network of green infrastructure (GI), employing the ENVI-MET V4 simulation program, which is a comprehensive micro climate modeling system used to measure and enhance pedestrian comfort levels in an urban environment. The results of the analysis show the significant effect of urban intervention strategies in reducing pedestrian heat stress. Where the air temperature drops by 3-4°C. Furthermore, an association was detected between leaf area density and PET levels. In a broader sense, this research supports the use of ecological urbanization along with integrated urban micro-environment modeling as a catalyst for urban quality improvement.
Copyright (c) 2023 Journal of AL-Farabi for Engineering Sciences
Improvement Airport Security System with Face Recognition Using Neural Network Based on the Arduino Uno Microcontroller
The aim of this study is to implement an algorithm for face recognition, based on the Arduino uno microcontroller. This paper presents it as an airport security system to detect passenger’s face and compare the result with the database of unwanted people. The system combines laser trigger circuit for image capturing and artificial neural network for image recognition. The laser trigger circuit has many benefits such as avoiding camera shakes or taking a picture without a timer. The captured image will be analyzed and processed in MATLAB using an artificial neural network to recognize the passenger’s face from the real captured images after the training phase. Many experiments have been conducted on our face databases with various numbers of iterations. The recognitions’ accuracy and efficiency of the proposed model are 93.33% and 2.67 respectively with 0.696530 seconds as execution time. The result shows the robustness of the developed model in terms of mean squared error, execution time, recognitions’ efficiency and accuracy. The smallest obtained mean squared error is 9.9991e-04 for the training data set and 0.1764 for the testing data set when they are recorded for a modified neural network which makes the developed system more reliable. Finally, the artificial neural network demonstrates the ability to detect the unseen relationship between features belong to the same face.
Reconfigurable Compact Quad-port MIMO Antennas for sub-6 GHz Applications
This paper presents compact quad-port frequency reconfigurable multi-input multi-output (MIMO) antennas for 5 G applications that operate at sub-6 GHz. The proposed design provides more isolation (>13 dB) and pattern diversity using four orthogonal radiating elements. C-shaped metal is used to extend the antenna's radiating elements by inserting one positive intrinsic negative diode (PIN) in the metal. The C-shaped metal and matching stub achieve frequency reconfigurability with a consistent radiation pattern. The PIN diode's switching characteristics allow the frequency to be shifted between two communication bands. One mode (diode ON) covers 2.5 and 5 GHz, while the second mode (diode OFF) covers another dual band of 3.5 and 5.7 GHz. Substrate dimensions are only 50 x 50 x1.6 mm3, making the proposed design compact. Antenna peaks at a gain of 4.18 dB and radiation efficiencies of 80 and 94% in the four frequency bands. The antenna design is appropriate for multi-functional wireless systems and cognitive radio applications since it spans frequency bands below 6 GHz and can be reconfigurable between wide and narrow bands.
The Ecological Balance Restoration in Existing Cities
Over time, the environmental issues that cities face, have grown as a result of a variety of causes, including population growth, increased densities and built-up areas, and changes in numerous land uses. Because of these difficulties, our cities have lost many of their natural qualities and ecological balance. As a result, finding solutions to these urban problems and implementing measures to restore the lost ecological balance in existing cities becomes vital. In order to restore the ecological balance and reduce its negative effects on city life, a number of ways have been used. One of these ways is "Protecting forest and green areas". So green areas are one of the most important environmental treatments in urban spaces. And because this importance is more evident in cities than in the countryside. Balancing the green areas leads directly and indirectly to the balance of the rest of the elements that affect the ecological balance within the city.
Void space and cavity measurement of the prepared zeolite y using X-ray diffracting modelling
Zeolite was synthesized using a solitary gel technique with Iraqi kaoline. Zeolite 's specific structural nature makes it difficult to use X-ray diffraction (XRD) to evaluate a single crystalline characteristic. Structural analysis to estimation and visualization of one crystal geometric properties by CrystalMaker software was carried out using XRD and the simulation of a crystal pattern using a Rietveld refinement technique using Maud software. This paper describes the Crystal Maker software suite, which includes the visualization, modelling and diffraction simulation of modular programs for crystal and molecular structures. The fundamental reasoning for the program is explored and a variety of applications are given for teaching and research in crystal chemistry and molecular dynamics.
A Comprehensive Evaluation Study for the Maintenance Management System of Roadways: A Review
Pavement infrastructure is essential and must be protected with limited resources. For decades, industrialized nations have used Pavement Management Systems (PMS) and pavement distress assessment to examine network and project-level pavement conditions. Pavement condition models can anticipate pavement degradation, schedule maintenance, and create multi-year rehabilitation plans based on historical data. Pavement condition surveys are done annually or biannually to calibrate pavement condition models and reduce network maintenance costs. This study highlights road system deficiencies to meet traffic demand, improper systematic methods of maintaining networks, budget constraints for decision makers, deficiencies in road geometrics, poor construction and maintenance practices, the need for proper planning and resource management, and improper planning. The technique comprises a theoretical element of PMS and a review of performance evaluation studies. A PMS lets users export data in an easy-to-understand manner, helping them manage their roadways better. Manual pavement distress surveys need certified raters.
Space Syntax & Regression Analysis: Evaluating the Impacts of Urban form and Socio-Economic on Walkability in some of the Neighborhoods Dora, Baghdad.
Even though it has been found that walking around a neighborhood has many benefits, including health benefits, these factors must be taken into account when planning. Walkability is hard to measure and can't be boiled down to a single number because it depends on both the cultural and social aspects of a community. Using space syntax theory, the layout of streets in different kinds of communities was looked at, and regression analysis was used to measure the socioeconomic factor. This study looks at the syntactical properties of the city's organized and unorganized (agricultural) areas in relation to people's walking patterns; examines the socioeconomic characteristics of the population; and looks into people's walking patterns and the variables that influence walkability in the study area. By conducting observations of the areas and interviews with residents. Some of the results of the research are the variation and difference in the variables that affect both areas of the analysis or field observation. The findings are then used to recommend approaches that planners, designers, and decision-makers could take to create transit- and pedestrian-oriented developments.
Determination of Water Saturation Based on Well Logging in Mishrif Carbonate Reservoir
Water saturation is calculated by many models that developed over the years based on known physical principles or on empirically derived relationships. The accurate determination of water saturation in complex carbonate reservoirs is the most challenging aspects of well log analysis. The complex formation under study is Mishrif carbonate formation which is one of the deepest hydrocarbons bearing zone in the Nasiriya oilfield in south of Iraq. The available scanned copes of well logs are digitalized by using Neurolog software. Schlumberger charts 2005 had been used for environmental corrections. These correction charts are supplied in the Interactive Petrophysics software. Simple Archie equation, Dual water model, and Indonesia model have been used to calculate water saturation of Mishrif carbonate formations. After making the environmental corrections, the porosity interpretation shows that the logging tools have a good quality of data reading. From Indonesian model, the water saturation for Mishrif formation is ranged from 0.25 to 0.41. This study is provided water saturation values with depth that should use to calculate original oil in place and detect the perforation zones in the pay zone using Interactive Petrophysics software.
Urban Space and Vitality of traditional city
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Strategies of Urban Green Infrastructure Planning in Existing Cities
Year after year, the impacts of climate change become more destructive. Accordingly, finding the appropriate solutions to adapt with such impacts begins to be a constant concern of many cities worldwide. In this field, urban green infrastructure or (UGI) provides appropriate solutions for different climate change impacts such as floods, urban heat island, pollution, drought, water scarcity, soil erosion, energy deficit, etc. Literature review indicates a limited knowledge about UGI planning strategies as climate change adaptation (CCA) in existing cities. Accordingly, the current research seeks to extract these strategies from the real world practices of UGI. The applied methodology is known as 'learning by doing'. Many eminent practices of UGI planning in existing cities for the purposes of CCA are selected. A cross analysis is conducted between them to extract their common UGI strategies. The research's results reveal that the explored practices almost depend on similar strategies which based on injecting the natural green and blue assets into the exiting urban land uses such as streets, parking, public buildings, etc. This strategy can be called "urban green injection". So, the opportunity to have UGI in the crowded cities depends on the innovative investment of the public land uses and converting them to vegetated or water-covered assets. Following such a strategy can ensure the alteration of the city image from the traditional natural-lacking character to a more sustainable and vibrant one. Adopting urban green injection can also ensure the maximum possible benefit of UGI employing as it was extracted from the successful outcomes of other practices.
Comparison of Percentage Error in Depth Estimation of Magnetic Anomalies Due Dyke-like Bodies
The Percentage errors in depth estimation from magnetic anomalies due to dyke-like bodies, having various depths and inclination angles, are calculated. Two methods have been used to estimate the depth of these bodies and then their percentage errors in depth estimation are compared. These methods are the well-known slope-half slope method and the method adopting procedure through using Fraser filter. The two methods have accompanied various percent errors in depth estimation for models having various magnetic parameters. The comparison between the calculated error values obtained from the two methods show that the differences between the maximum and minimum percent error with various inclination angles and depths are smaller for depths estimated by using Fraser filter procedure. Such results highlight the lesser mistakes that can be achieved if the procedure of depth estimation using Fraser filter is considered and in addition, the ease of the application of this procedure compared with slope method.
Computer Aided Design, Simulation and Implementation of Multi Switched Mode Power Supplies (SMPS) Controlled by One Microprocessor
In this paper an approach of computer design, simulation and implementation of multi switched mode power supplies (SMPS) controlled by one microprocessor is investigated. The design of three switch mode power supplies based on flyback DC-DC converters with different power 20,24 and 6 Watt and output voltages rated +5V,+12V/ and -12V are achieved. The design power stage is based on the bipolar as the main switching device with protection network used to ensure safe operation. The microprocessor and its supervisory board are used with slight software program to control the output of the multi switched mode power supplies (SMPS ) even though they have different switching frequency, output voltage, output power. The system performance is simulated and examined under many desired conditions. From the obtained result it was found that, it is efficiently and easily to use one microprocessor to control of multi switched mode power supplies reducing the complexity of the system
A Review of COVID-19 Diagnosis and Detection Using Artificial Intelligence
Coronavirus has received widespread attention from the community of researchers and medical scientists in the past year. Deploying based on Artificial Intelligence (AI) networks and models in real world to learn about and diagnose COVID-19 is a critical mission for medical personnel to help preventing the rapid spread of this virus. This article is a brief review of recent papers concerning about detection of the virus; most of the schemes used to detect and diagnose COVID-19 rely on chest X-Ray, some on sounds of breathing, and by using electrocardiogram (ECG) trace images, all these schemes based on artificial neural network for early screening of COVID-19 and estimating human mobility to limit its spread. In some studies, an accuracy rate that was obtained exceeded 95%, which is an acceptable value and that can be relied upon in the diagnosis. Therefore, currently screening tests are better in terms accuracy and reliability for diagnosing patients with severe and acute respiratory syndrome coronavirus, frequently the most used test is the (RT-PCR).
Cost-effective Automatic Hand Washing System
According to World Health Organization recommendations, people should wash their hands regularly, with soap and water for at least 20 seconds. After that, people should avoid touching surfaces. Several hand sanitizer machines were released in markets. These devices are nothing new, but they all sharing the same problems: (1) They all are expensive and not all people were able to buy them in their houses; (2) They all use a sanitizer which is not as effective as soap and water. In this paper, an automatic and cheap hand washing system, based on soap and water, is designed and implemented using simple and low cost components. The proposed system has two parts: one should be connected to the main water faucet and another must be put nearby. This system keen on reducing any virus transmission, helping people to wash their hands properly without touching the water faucet and reduce rationalize water consumption. A microcontroller is used with some sensors and simple parts to build the system. A sensor will detect hands approaching and automatically allow liquid soap flowing. After 20 seconds, a sound will alert the person that the washing time has expired. Also another sensor will check hands approaching to the water faucet. If so, then the system will allow water flowing.
Difficulties of Explorationests in decision making under complex constraints of Technical/Economical and Geopolitical environment of risk and uncertainties
The ultimate objective of Explorationests and managerial head posts is to make the right decision of exploration and development plans under Technical (Engineering) , Economic and Geopolitical major environments.This decision must respond positively to the target of exaggerating the national reserve necessities and to replace that depleted or about depleted reservoirs or fields with the best efficiency. Thus, The task of a decision maker is in the beginning to evaluate the situation of the problem he has, where certainly falls in one or more of four cases: 1) Certain deterministic consequences 2)Risky of probabilistic consequences 3)Uncertainty of unknown consequence and 4)Conflict of consequences influenced by opponents. Explorationests or manager deeply has to deal with enormous numbers of unknown variables or parameters as more complex situations by more components of risk and uncertainties, particularly the 2nd and the 3rd categories. In both cases Explorationests must develop a criterion like reserve, profits as related to his objective, then applying either a simulation method or analytical approach to reduce the level of probabilities. The probability can be defined by what is called the Expected Value concept, which for Net Present value becomes (ENPV) , which in turn could be either: An event , where a product to be obtained by multiplying the occurrence(frequency)as an outcome by the condition worth value , or : As Decision Alternative , where the probability outcome that could occur, if the decision alternative is occurred . This definition hence, is the most important tool in decision making, while the most popular simulation technique to reduce probability level is what defined as Monte Carlos simulation. It tried to apply it in this work for the western flank of the Mesopotamia, where many exploratory targets of unknown variables assumed to deal with the concept of expected value EV as: a) joint, mutual exclusives probabilistic formula P(total)=P(Tech)*P(Eco)*P(Geopol), and, or: As similar case, but as a decision making alternatives, P(total)=Sum{P(Tech)+P(Eco)+P(Geopol)}.Results of this preliminary study are promising targets, but risky to some extent, thus it seems better to explore this major target, but not to develop it, at least now.
Prototyping of Multi-Factors Based Vehicle Accident Detection and Reporting System Relying on GPS and GS
Several car accidents are reported everyday worldwide, and many fatalities and injuries occur that can be predicted and prevented. This paper does not focus on those accidents that get reported, but instead it focuses on the accidents that do not get reported and result in major injuries and fatalities that can be avoided by simple notification that can be sent to the right people at the right time, so that help can be sent even if the people in need of it are not capable of requesting it. The proposed system can be considered as a tool for the safety of the car passengers in addition to the already existing seat belts. The optimum speed of arrival of the help is achieved in this work by implementing GPS such that a website link that contains the exact location of the accident is sent in order to find the location of the accident instantly without having the people involved in the accident to have to report their location. This paper aims mainly to design a system that can detect one of three cases, the first one is when there is an accident and the air bags do not deploy, while the second case is when there is an accident, and the air bags are deployed, and the third case is an SOS message in case there was a need for it. Of course, there might happen a small accident that does not require the system to send a notification, so there is a switch that can be pushed in order to prevent the system from sending faulty alarms.