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Spatial Decision Support System for Residential Solar Energy Adoption
Ahmed O. Alzahrani,Hind Bitar,Abdulrahman Alzahrani,Khalaf O. Alsalem International Journal of Computer ScienceNetwork S 2023 International journal of computer science and netw Vol.23 No.6
Renewable energy is not a new terminology. One of the fastest growing renewable energies is solar energy. The implementation of solar energy provides several advantages including the reduction of some of the environmental risks of fossil fuel consumption. This research elaborated the importance of the adaption of solar energy by developing a spatial decision support system (SDSS), while the Residential Solar Energy Adoption (RSEA) is an instantiation artifact in the form of an SDSS. As a GIS web-based application, RSEA allows stakeholders (e.g., utility companies, policymakers, service providers homeowners, and researchers) to navigate through locations on a map interactively. The maps highlight locations with high and low solar energy adoption potential that enables decision-makers (e.g., policymakers, solar firms, utility companies, and nonprofit organizations) to make decisions. A combined qualitative and quantitative methodological approach was used to evaluate the application's usability and user experience, and results affirmed the ability of the factors of utility, usefulness, and a positive user experience of the residential solar energy adoption of spatial decision support system (RSEA-SDSS). RSEA-SDSS in improving the decision-making process for potential various stakeholders, in utility, solar installations, policy making, and non-profit renewable energy domains.
Almaleki, Deyab A.,Alzahrani, Abdulrahman J.,Alkhairi, Mohammed A.,Albalawi, Farhan A.,Albogami, Hosin A.,Alhajory, Easa S.,Readi, Wadea A.,Idrees, Mohammed A.,Alshamrani, Saleh M.,Alwusaidi, Osama A. International Journal of Computer ScienceNetwork S 2022 International journal of computer science and netw Vol.22 No.8
This study aimed to test the factor structure of the measure of student participation in distance education. The study population consisted of all teachers in public education and faculty members in higher education in the Kingdom of Saudi Arabia by applying it to a sample of bachelor's and graduate students at the college of Education at umm al-Qura University. The (ESE) was applied to a random sample representing the study population consisting of (216) respondents. The results of the study showed that the scale consists of three main factors, with showed a high degree of construct validity through fit indices of the confirmatory factor analysis. The results have shown a gradual consistency of the measure's invariance that reaches the high level of the Measurement Invariance across the gender and study groups variables.
Feras Almarshad,Ali Alaklabi,Abdulrahman Al Raizah,Yousof AlZahrani,Somaya Awad Aljohani,Rawaby Khalid AlShammari,Al-zahraa Saleh Al-mahlawi,Abdulaziz Abdullah Alahmary,Mosaad Almegren,Dushad Ram 대한혈액학회 2023 Blood Research Vol.58 No.1
Background In patients with suspected pulmonary embolism (PE), the literature suggests the overuse of computerized tomography pulmonary angiography (CTPA) and underuse of clinical decision rules before imaging request. This study determined the potential for avoidable CTPA using the modified Wells score (mWS) and D-dimer assay in patients with suspected PE. Methods This hospital-based retrospective study analyzed the clinical data of 661 consecutive patients with suspected PE who underwent CTPA in the emergency department of a tertiary hospital for the use of a clinical prediction rule (mWS) and D-dimer assay. The score was calculated retrospectively from the available data in the files of patients who did not have a documented clinical prediction rule. Overuse (avoidable) CTPA was defined as D-dimer negativity and PE unlikely for this study. Results Of 661 patients’ data examined, clinical prediction rules were documented in 15 (2.3%). In total, 422 patients (63.8%) had required information on modified Wells criteria and D-dimer assays and were included for further analysis. PE on CTPA was present in 22 (5.21%) of PE unlikely (mWS ≤4) and 1 (0.24%) of D-dimer negative patients. Thirty patients (7.11%) met the avoidable CTPA (DD negative+PE unlikely) criteria, and it was significantly associated with dyspnea. The value of sensitivity of avoidable CTPA was 100%, whereas the positive predictive value was 90.3%. Conclusion Underutilization of clinical prediction rules before prescribing CTPA is common in emergency departments. Therefore, a mandatory policy should be implemented regarding the evaluation of avoidable CTPA imaging to reduce CTPA overuse.
Audio Steganography Method Using Least Significant Bit (LSB) Encoding Technique
Alarood, Alaa Abdulsalm,Alghamdi, Ahmed Mohammed,Alzahrani, Ahmed Omar,Alzahrani, Abdulrahman,Alsolami, Eesa International Journal of Computer ScienceNetwork S 2022 International journal of computer science and netw Vol.22 No.7
MP3 is one of the most widely used file formats for encoding and representing audio data. One of the reasons for this popularity is their significant ability to reduce audio file sizes in comparison to other encoding techniques. Additionally, other reasons also include ease of implementation, its availability and good technical support. Steganography is the art of shielding the communication between two parties from the eyes of attackers. In steganography, a secret message in the form of a copyright mark, concealed communication, or serial number can be embedded in an innocuous file (e.g., computer code, video film, or audio recording), making it impossible for the wrong party to access the hidden message during the exchange of data. This paper describes a new steganography algorithm for encoding secret messages in MP3 audio files using an improved least significant bit (LSB) technique with high embedding capacity. Test results obtained shows that the efficiency of this technique is higher compared to other LSB techniques.
Moath Bin Homaid,Doaa Abdelmoety,Waleed Alshareef,Amer Alghamdi,Fareed Alhozali,Naif Alfahmi,Wael Hafiz,Abdulrahman Alzahrani,Soha Elmorsy 대한직업환경의학회 2016 대한직업환경의학회지 Vol.28 No.-
Background: Low Back Pain (LBP) is the commonest musculoskeletal disorder and an important occupational hazard among healthcare workers (HCWs) that peaks among Operating Room (OR) staff. This cross-sectional study aimed to assess the prevalence, characteristics, and risk factors of low back pain among operating room (OR) staff in a tertiary healthcare center in Makkah, Saudi Arabia. Methods: A 39-item self-administered questionnaire was distributed to all available OR staff. Data about personal, sociodemographic, general risk factors OR specific risky activities, and LBP characteristics were obtained. Descriptive, crosstabs, and univariate and multivariate logistic regression tests were employed. Results: Out of the 143 distributed questionnaires, 84 % were received. LBP prevalence was 74.2 %. No statistically significant associations were detected between LBP and any of the general risk factors (p >0.05). However, most of the OR risky activities were significantly associated with the occurrence of LBP (p <0.05) e.g. lifting objects above the waist, rotating torso while bearing weight, transferring patients onto bed or chair, pulling a patient up the bed, and repositioning a patient in bed. These significant associations were preserved after adjustment for gender, perceived stress at work, educational level, and receiving education about LBP. Rest and analgesics were reported to be the most common relievers. Conclusions: LBP is a common health issue among KAMC OR staff. OR risky activities were found to contribute to this problem. We suggest designing educational interventional programs to teach OR staff the best way to prevent this problem.