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Observations “Detections” of Shallow Unconventional Qusaiba Shale Gas Reservoirs North Part of Saudi Arabia

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Journal of Geoscience and Environment Protection 2018年第5期6卷 257-265页

作者： Mamdoh Alajmi Abdulrahman Alotaibi Essam Aboud Aqeel alharbi Majed Almalki King Abdulaziz City for Science and Technology National Center of Oil and Gas Riyadh KSA King Abdulaziz University Natural Hazard Center Jeddah KSA

There are many oil and gas conventional reservoirs in Saudi Arabia have been exploited, but still there are also need to be explored and produced especially in the fields of unconventional shale gas. Investigation the extending of rock source of the hot shale gas Qusaiba formation in North part of Saudi Arabia, the most important rock source in the word, is crucial for one of the most promising shallow shale gas reservoir in the region. Most previous studies in the area were a geological, petrographical, petrophysical, geochemical characteristics or well logs studies which are not enough to show the continuously of the reservoir and map the diverse of the depth changes. The lack of the geophysical studies in the area inspiring to perform such study and image how the continuously and behavior of the reservoir subsurface. Imaging the geological stratigraphy of area utilizing a multiple geophysical methods is a crucial step to disclosure the unconventional reservoir and understand the source rock extending underneath the North region of Saudi Arabia. A good achievement is shown in this study using this integration of seismic migrated image and gravity geological model. This integration provides a robust and true subsurface geological formations, structures, and determined thickness and depth of the Lower Silurian Sharawra Qusaiba and Sarah formations. This work would be a valuable contribution in unconventional reservoirs exploration in shale gas in Saudi Arabia.

关键词： Unconventional Shale Gas Qusaiba Formation Seismic Gravity Saudi Arabia

A Short Review of Classification Algorithms Accuracy for Data Prediction in Data Mining Applications

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Journal of Data Analysis and Information Processing 2021年第3期9卷 162-174页

作者： Ibrahim Ba’abbad Thamer Althubiti Abdulmohsen alharbi Khalid Alfarsi Saim Rasheed Department of Information Technology Faculty of Computing and Information Technology King Abdulaziz University Jeddah KSA

Many business applications rely on their historical data to predict their business future. The marketing products process is one of the core processes for the business. Customer needs give a useful piece of information that helps to market the appropriate products at the appropriate time. Moreover, services are considered recently as products. The development of education and health services is depending on historical data. For the more, reducing online social media networks problems and crimes need a significant source of information. Data analysts need to use an efficient classification algorithm to predict the future of such businesses. However, dealing with a huge quantity of data requires great time to process. Data mining involves many useful techniques that are used to predict statistical data in a variety of business applications. The classification technique is one of the most widely used with a variety of algorithms. In this paper, various classification algorithms are revised in terms of accuracy in different areas of data mining applications. A comprehensive analysis is made after delegated reading of 20 papers in the literature. This paper aims to help data analysts to choose the most suitable classification algorithm for different business applications including business in general, online social media networks, agriculture, health, and education. Results show FFBPN is the most accurate algorithm in the business domain. The Random Forest algorithm is the most accurate in classifying online social networks (OSN) activities. Naïve Bayes algorithm is the most accurate to classify agriculture datasets. OneR is the most accurate algorithm to classify instances withi

关键词： Data Prediction Techniques Accuracy Classification Algorithms Data Mining Applications

On a Problem of an Infinite Plate with a Curvilinear Hole inside the Unit Circle

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Applied Mathematics 2015年第1期6卷 206-220页

作者： F. S. Bayones B. M. alharbi Department of Mathematics Faculty of Science Taif University Taif KSA

In this work, we used the complex variable methods to derive the Goursat functions for the first and second fundamental problem of an infinite plate with a curvilinear hole C. The hole is mapped in the domain inside a unit circle by means of the rational mapping function. Many special cases are discussed and established of these functions. Also, many applications and examples are considered. The results indicate that the infinite plate with a curvilinear hole inside the unit circle is very pronounced.

关键词： Complex Variable Method An Infinite Plate Curvilinear Hole Conformal Mapping Goursat Functions

Preventing Phishing Attack on Voting System Using Visual Cryptography

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Journal of Computer and Communications 2022年第10期10卷 149-161页

作者： Ahood Alotaibi Lama Alhubaidi Alghala Alyami Leena Marghalani Bashayer alharbi Naya Nagy College of Cybersecurity and Digital Forensics Imam Abdulrahman Bin Faisal University Dammam Saudi Arabia College of Computer Science and Information Technology Imam Abdulrahman Bin Faisal University Dammam Saudi Arabia

Phishing is one of the most common social engineering attacks that users over the internet fall for. An example is voting systems, and because such systems should be accurate and error free, phishing prevention techniques are crucial. Visual Cryptography (VC) is utilized for efficient voting system authentication to cast votes. VC is one of the most secure approaches for privacy protection as it ensures the confidentiality of the voting system. This paper discusses proposed phishing prevention methods and compares different proposed methods.

关键词： Remote Voting System (RVS) Voting System (VS) Shares Ballots Authentication Visual Cryptography Phishing Captcha

The Potential Sources of Transmitting of Hospital Acquired Infection by Routine Devices in Adult ICU in Alrass General Hospital

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Journal of Biosciences and Medicines 2020年第4期8卷 69-80页

作者： Reem Dbas alharbi Amal Hussain Mohammed Ali Ahmad Almatroudi Shaimaa Mohamed Department of Medical Laboratories College of Applied Medical Sciences Qassim University Qassim KSA Alrass General Hospital Qassim Health Cluster Saudi Ministry of Health Qassim KSA

Hospital-acquired infections (HAI) reflect as a major global safety concern for both patients and health-care professionals. These infections could be in the form of cross-infection, endogenous infection and environmental Infection. Over 80% of these infections are related to devices’ utilization needed for patients’ life support. Methods show this is an observational and cross-sectional study, to identify the microorganism and determine the potential source of transmitting of hospital acquired infection by routine devices in adult ICU. The samples were collected using Amies transport media;three swabs were taken from the surfaces of indwelling urinary catheter, mechanical ventilation device and central venous catheter used from every twelve patients. The samples were cultured and analyzed by using microbiologic technique. Finally, all samples analyzed by MicroScan WalkAway 96 pulse. Results showing the most bacteria isolated are “Klebsiella pneumonia” (18.37%), “Acinetobacter baumannii” (11.48%), “Staphylococcus epidermidis” (4.59%), “Staphylococcus haemolyticus” (4.59%), “E. coli” (4.59%), “Serratia marcescens” (2.3%), “Pseudomonas luteola” (2.3%), “Kocurio kristinae” (2.3%) and “Photorhabdus luminscens” (2.3%). This study detects a high contamination of routine devices and resistant organisms. In the end it is recommended that effective infection control practices and effective strategies to control antibiotic-resistant bacteria should be applied.

关键词： Health-Acquired Infection ICU Devices Catheters Mechanical Ventilator Device

Investigation of the Surface Brightness Model in the Milky Way via Homotopy Perturbation Method

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Journal of Applied Mathematics and Physics 2020年第3期8卷 434-442页

作者： Abdullah A. Alatawi Mona Aljoufi Fahad M. alharbi Abdelhalim Ebaid Department of Mathematics Faculty of Sciences University of Tabuk Tabuk KSA

In this paper, a linear delay model in astronomy, called as Ambartsumian equation, is investigated by two different approaches. The first is the approximate homotopy perturbation method (HPM), while the second is a new closed-form solution for this equation. The results are presented through a table and several plots and have been compared with the relevant literature. It is revealed that the present HPM is of higher accuracy than those approximate techniques used in previously published works, when compared with the obtained analytic solution. The convergence of the new analytic solution has been also discussed.

关键词： Delay Homotopy Perturbation Method Analytic Solution

Physicians Attitude towards Pressure Injury Prevention and Management

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Journal of Cancer Therapy 2020年第4期11卷 189-198页

作者： Abdullah Bany Hamdan Balaji Duraisamy Sherwynn Javison Tariq Wani Musa alharbi Comprehensive Cancer Center King Fahad Medical City Riyadh KSA Research Center King Fahad Medical City Riyadh KSA

Background: Cancer and its management can cause cachexia, which, along with prolonged immobility could lead to the development of chronic pressure ulcers (PU). These complications result into infection and/or pressure injury. Though pressure injury related tasks, are deemed to be given to staff nurses alone. Little of literature is available on the physician’s attitude towards PU prevention and management. Medical interns in 2015 concluded that 70% of them need more education in pressure injury. Present study is about physicians involved in pressure injury identification and management in a Cancer Center. Material and methods: A cross-sectional study was conducted in King Fahad Medical City among oncology physicians using self-administered 11 statement survey questionnaire. Physician residents, fellows, assistant consultants’ and consultants’ attitudes were compared. Statistical analyses were performed using SPSS. Results: In total 50 physicians completed the survey. The physicians demonstrated a positive attitude with an average mean score of 42.35 ± 4.65 (32, 51). The difference in the attitude scores among sub-groups was not statistically significant. Conclusions: Our study demonstrated a positive attitude towards pressure ulcer prevention and management among physicians working in Cancer Center. We have also highlighted the challenges in maintaining this positive attitude and possible strategies for improvement in the future.

关键词： Cancer Oncology Attitude Physician Pressure Skin Injury

Antidiarrheal and phytochemical constituents of methanol extracts of some plants in Saudi Arabia

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中国药理学与毒理学杂志 2015年第S1期29卷 112-112页

作者： KhaledB.alharbi IbrahimM.El-ASHMAWY Department of Veterinary Medicine College of Agriculture and Veterinary Medicine Qassim University Buraidah 51452 P. O. 6622 AI-Qassim Kingdom of Saudi Arabia

OBJECTIVE The purpose of the present study was to evaluate the antidiarrheal effects and the phytochemical constituents of methanol extracts of some plants used traditionally in kingdom of Saudi Arabia using castor oil-induced diarrhea and gastrointestinal motility test using charcoal meal method were *** The methanolic extracts were initially assayed for their effects in castor oil-induced diarrhea at different doses(250and 500mg·kg-1 followed by their evaluation on the peristaltic movements in charcoal meal *** The results of the present study indicates that,administration of the following methanol plant extracts;Rhazya stricta,Heliotropium bacciferum,Tribulus longipetalus,Achillea fragrantissima,Artemisia herba alba,Haloxylon salicornicum,Plantago coronopus,Cyperus conglomerates,Hordeum distichon,Eragrostis poaeoides,Astragalus spinosus,Lepidium sativum seeds induced a higher percentages of inhibition of ***,the administration of Rhanterium epapposum,Moltkiopsis ciliate,Lasiurus hirsutus,Deverra triradiata,Lycium *** spinosus,Echinops hussoni,and Prosopis farcta were the least *** antidiarrheal effects of these plants might be due to their high contents of flavonoids and *** It could be concluded that,the remarkable antidiarrheal effects of these plants attest to their utility in a wide range of stats of diarrhea.

关键词： antidiarrheal diarrhea plant extracts charcoal mea

Nurses Turnover: Retention of the Staff

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Open Journal of Nursing 2022年第3期12卷 199-219页

作者： Fawzeyah S. H. S. alharbi Zayan Mustafa Mercy Benoy Nottingham Trent University Nottingham UK University College of London London UK The Tamil Nadu Dr. M.G.R. Medical University Chennai India

An extended literature review has been conducted about nurses’ turnover, and how to retain the staff by applying appropriate Human Resources theory in the healthcare organisation, to retain nurses and eliminate turnover. This is through exploring the Human Resource Management issue related to nurses’ high turnover and the reason which is behind to leave their hospitals in Kuwait. Also, the study will critically examine the working nature and the issue behind nurses’ turnover. In addition, motivational theories will be used in this paper and will apply some strategies that can be used to avert the causes of the problem, to ensure that nurses are retained within their organisations. Aim: To enhance employee loyalty to their organisations and effectively retain nurses’ staff in X organisation, with a particular reference to Human Resources Management. Methodology: Various literature, journals, articles, reports and books were reviewed to achieve the aim of this paper, specific consideration was given to the leadership. A relevant Human Resources Theory was applied with leadership support to retain nurses in the organisation and to reduce nurses’ turnover. Findings: Leaders are important to develop a considerable retention strategy within the organisation, by increasing the nurse’s loyalty and satisfaction through different techniques such as policy and guidelines, motivating through allowances and leave, further changing the system. Recommendations: To provide extensive training to the leaders to enhance their skills in managing the organisation and staff. To overcome the issues that interfere with nurses’ satisfaction and solve the issues to retain the nurses.

关键词： Nurses’ Shortage Nurses Turnover Retention of the Staff Employee Engagement/Loyalty/Satisfaction Human Resources Motivation