The Role of Small and Medium Enterprises in Achieving Economic Goals of the Vision of Saudi Arabia 2030

Mohammed Ali Mohamed Ahmed ALI(Mohammed Ali Mohamed Ahmed ALI ),Ahmed Saied Rahama ABDALLAH(Ahmed Saied Rahama ABDALLAH ),SalimAhmed Mohamed AlSHEHRI(SalimAhmed Mohamed AlSHEHRI ) 한국유통과학회 2023 The Journal of Asian Finance, Economics and Busine Vol.10 No.2

This research aims to identify the role that small and medium enterprises (SMEs) can play in achieving the economic goals of the vision of Saudi Arabia 2030. The study relied on descriptive analysis, designing a standard model, and analyzing it using the Eviews9 program. The study also adopted the questionnaire as a tool for data collection. The study area covered Alkharj and Hawtat Bani Tamim governorates. The sample size of the study was 142 participants. The study’s results confirmed the existence of a significant impact of changes in independent variables (X1, X2, X3, X4), which are (GDP, non-oil exports, number of employees, and public revenues), respectively. The dependent variable (Y) represents the number of small and medium-sized businesses in the Kingdom of Saudi Arabia. Additionally, it was found that 61.3% of small and medium-sized enterprises in the governorates of Al-Kharj and Hawtat Bani Tamim operate in the commercial sector. Most study participants concur that SMEs significantly lowered the unemployment rate and helped boost the GDP rate in the Kingdom of Saudi Arabia. The obstacles and difficulties facing the establishment of these enterprises were financial problems, marketing problems, and corporate monopoly. Furthermore, most of the small and medium l enterprises faced financing problems.

Achieving the Agility of Human Resources Through Job Empowerment Practices and Job Satisfaction: Empirical Evidence from the Banking Sectors

Mohamed Husni Ali ATHAMNEH(Mohamed Husni Ali ATHAMNEH ),Juraifa JAIS(Juraifa JAIS ) 한국유통과학회 2023 The Journal of Asian Finance, Economics and Busine Vol.10 No.2

Financial sectors, like other sectors with strict hierarchies, need help to be adaptive or agile enough to satisfy the needs of competitive situations. In this regard, this study aims to evaluate the influence of job satisfaction on the link between job empowerment practices and the agility of human resources and fills the gaps in the current literature. To fulfill these aims, the study employs data collected through a survey of 460 employees randomly selected across various levels of commercial banking. AMOS 25 was used to conduct a statistical data analysis by applying structural equation modelling to test the hypotheses. The findings revealed positive and direct associations between job empowerment practices, job satisfaction, and the agility of human resources. In addition, employee satisfaction served as a powerful intermediary between empowerment practices and the agility of human resources. This study is one of the first to analyze the association between these factors in this field. These results imply that banks should develop effective job empowerment strategies to increase employee job satisfaction, which can lead to a more agile workforce. As mentioned in this paper, it also has important and helpful implications for academics and banks.

Tracing Students Performance by Intervention of the Academic Advisor

Mohamed, Abdelmoneim Ali,Nafie, Faisal Mohammed International Journal of Computer ScienceNetwork S 2021 International journal of computer science and netw Vol.21 No.12

Data mining technique was used to track student's performance during years studding in college and determine the impact of GPA_SEC on the GPA student rates according to the current academic advising method used on student's status. The study utilized a sample of 5436 individuals were drawn from two colleges in Majmaah University, KSA during 2013-2018 period. The results showed that the student's completion status in terms of graduation, dropout, Stumbling or dismissed was classified according to the average grades of admission from secondary school GPA_SEC. The results show the effect of the current academic advising that most of students gain less grades comparing with GPA_SEC in addition that the higher GPA_SEC was the higher graduation, dropout and dismissed decreased when GPA_SEC was high.. Therefore, the study recommends tracking students academically to evaluate their results of each semester to find out the causes of the deficiencies and addressing them within the departments.

Bioprospecting of Culturable Halophilic Bacteria Isolated from Mediterranean Solar Saltern for Extracellular Halotolerant Enzymes

Ali Ahmed Mohamed,Abdel-Rahman Tahany M.A.,Farahat Mohamed G. 한국미생물·생명공학회 2024 한국미생물·생명공학회지 Vol.52 No.1

Halophilic bacteria are promising reservoirs for halotolerant enzymes that have gained much attention in biotechnological applications due to their remarkable activity and stability. In this study, 62 halophilic bacterial strains isolated from a solar saltern were screened for the production of various extracellular enzymes. The results revealed that 31 strains (50%) were positive for amylase production while 26 strains (41.9%) were positive for protease. Further, 22 strains (35.48%) exhibited β-glucosidase activity and only 17 (27.41%) demonstrated lipase activity. Of the investigated halophiles, ten strains growing in the presence of ≥15% NaCl (w/v) were selected and identified based on their 16S rRNA gene sequences as Halomonas meridiana, Salinivibrio costicola, Virgibacillus oceani, Virgibacillus marismortui, Marinobacter lipolyticus, Halobacillus karajensis, Salicola salis, Pseudoalteromonas shioyasakiensis, Salinicoccus amylolyticus, and Paracoccus salipaludis. Therefore, the present study highlights the diversity of the culturable halophilic bacteria in a Mediterranean solar saltern, harboring various valuable halotolerant enzymes.

Flexible Engineering Tool for Radiofrequency Parameter Identification of RF-MEMS BAW Filters

Mohamed Mabrouk,Mohamed-Ali Boujemaa,Fethi Choubani 한국전자통신연구원 2016 ETRI Journal Vol.38 No.5

In this paper, we present a new specific and customized interface tool with parameter identification of Modified Butterworth Van Dyke models for ladder bulk acoustic wave filters. The aforementioned tool is easy to use and flexible because it allows simulations and reengineering to be conducted in an application. A modular design approach is applied to simplify the extension of the proposed tool for different topologies. The proposed tool was validated using measurements from an aluminum-nitride based ladder BAW filter dedicated to the frequency ranges of the Universal Mobile Telecommunications Service and standards and Wideband Code Division Multiple Access.

Propagation of waves with nonlocal effects for vibration response of armchair double-walled CNTs

Ali, Zainab,Khadimallah, Mohamed Amine,Hussain, Muzamal,Asghar, Sehar,Al-Thobiani, Faisal,Elbahar, Mohamed,Elimame, Elaloui,Tounsi, Abdelouahed Techno-Press 2021 Advances in nano research Vol.11 No.2

In this paper, vibration characteristics of double-walled carbon nanotubes (CNTs) are studied based upon nonlocal elastic shell theory. The significance of small scale is being perceived by developing nonlocal Love shell model. The wave propagation approach has been utilized to frame the governing equations as eigen value system. The influence of nonlocal parameter subjected to diverse end supports has been overtly analyzed. An appropriate selection of material properties and nonlocal parameter has been considered. The influence of changing mechanical parameter Poisson's ratio has been investigated in detail. It is found that the frequencies decrease as nonlocal parameter increases and for the certain values of nonlocal parameter against range of Poisson ratio rise slowly with length double-walled CNTs. The dominance of boundary conditions via nonlocal parameter is shown graphically. The results generated furnish the evidence regarding applicability of nonlocal shell model and also verified by earlier published literature.

Effect of Aqua Therapy Exercises on Postmastectomy Lymphedema: A Prospective Randomized Controlled Trial

Ali Khadra Mohamed,El Gammal Eid Rizk,Eladl Hadaya Mosaad 대한재활의학회 2021 Annals of Rehabilitation Medicine Vol.45 No.2

Objective To investigate the effect of aqua therapy resistance exercise on arm volume, pain, and shoulder range of movements in post-mastectomy lymphedema. Methods This was a single-blind randomized controlled trial. Fifty eligible breast cancer survivors (median, 10 years after surgery) with lymphedema (median, 21% inter-limb difference) were assigned randomly to group A (n=25) or control group B (n=25). The study group underwent 60 minutes of aqua therapy exercise comprising of warm-up for 10 minutes, 40 minutes of strengthening exercises, and 10 minutes of cooling down, three times a week for 8 weeks. The control group underwent 60 minutes of land-based exercise three times a week for 8 weeks. Arm volume calculated by measuring the arm circumference, shoulder flexion, and abduction range of motion (ROM), and pain using a visual analog scale (VAS) were assessed at baseline and after 8 weeks of treatment. Results There was a statistically significant difference in limb volume, shoulder flexion and abduction ROM, and VAS scores in favor of the study group (p<0.001) after 8 weeks of intervention. The mean±standard deviation for limb volume, shoulder flexion, abduction, and pain score were 2,108.71±200.97 mL, 169.68°±4.54°, 150.44°±3.92°, and 3.16±1.1 in the study group and 2,256.41±186.94 mL, 147.36°±5.32°, 131.32°±4.38°, and 5.68±0.94 in the control group, respectively. Conclusion Adding aqua therapy resistance exercise to routine physical therapy might be more effective in decreasing the limb volume and pain intensity and improving ROM of the shoulder in postmastectomy lymphedema.

Sequential model predictive control for five‑level MMC‑based multi‑terminal HVDC systems

Ali Bouzidi,Said Barkat,Ali Akka,Mohamed Lokmane Bendaas 전력전자학회 2023 JOURNAL OF POWER ELECTRONICS Vol.23 No.10

In this paper, a Sequential Model Predictive Control (SMPC) is proposed for controlling a Modular Multilevel Converter (MMC)-based Multi-Terminal high Voltage Direct Current (MTDC) grid. Based on an adequate predictive model of the grid side of each MMC unit, cost functions are designed and optimized to generate the appropriate switching states of each MMC. In addition to its ability to guarantee accurate power-sharing between deferent controlled MMCs units, the conspicuousfeatures of the propose MPC strategy are the sub-module capacitor voltages balancing and MMC circulating currents minimization. To validate the performance and the effectiveness of the proposed control approach in terms of its ability to achieve the desired performance under various operational conditions, comprehensive simulation studies are conducted on a four-terminal MMC-MTDC system.

How to Prevent Anastomotic Leak in Colorectal Surgery? A Systematic Review

Mohamed Ali Chaouch,Tarek Kellil,Camillia Jeddi,Ahmed Saidani,Faouzi Chebbi,Khadija Zouari 대한대장항문학회 2020 Annals of Coloproctolgy Vol.36 No.4

Anastomosis leakage (AL) after colorectal surgery is an embarrassing problem. It is associated with poor consequence. This review aims to summarize published evidence on prevention of AL after colorectal surgery and provide recommendations according to the Oxford Centre for Evidence-Based Medicine. We conducted bibliographic research on January 15, 2020, of PubMed, Cochrane Library, Embase, Scopus, and Google Scholar. We retained meta-analysis, reviews, and randomized clinical trials. We concluded that mechanical bowel preparation did not reduce AL. It seems that oral antibiotic or oral antibiotic with mechanical bowel preparation could reduce the risk of AL. The surgical approach did not affect the AL rate. The low ligation of the inferior mesenteric artery could reduce the AL rate. The mechanical anastomosis is superior to hand-sewn anastomosis only in case of right colectomies, with similar results in rectal surgery between the 2 anastomosis techniques. In the case of right colectomies, this anastomosis could be performed intracorporeally or extracorporeally with similar outcomes. The air leak test did not reduce AL. There is no interest of external drainage in colonic surgery but drains reduced the rate of AL and rate of reoperation after low anterior resection. The transanal tube reduced the rate of AL.

Micro-grid Monitoring and Supervision: Web-based SCADA Approach

Ali Mohamed A.,Barakat Mahmoud M.,Abokhalaf Masoud M.,Fadel Yasmin H.,Kandil Mohamed,Rasmy Mariam W.,Ali Osama N.,Besheer Ahmad H.,Emara Hassan M.,Bahgat Ahmed 대한전기학회 2021 Journal of Electrical Engineering & Technology Vol.16 No.5

Owing to the widespread use of the micro-grid concept to serve many real life applications, the main concern of this paper is to monitor, evaluate and manage the operational performance of an existent, already installed micro-grid that consists of On & Off grid PV systems in addition to the main grid supply. With the aid of customized web based SCADA system fully designed by authors, the performance evaluation of the proposed micro-grid is carried out in terms of energy consumption, power quality indices and energy cost based on Egypt’s energy current tariff . The designed system helps in both micro-grid status monitoring as well as load sharing between the main grid supply and the off grid PV energy system. The data of the on grid PV energy system are accessed and collected online directly from the inverter web server instead of downloading them offl ine from the PV inverter. In this case, data are analyzed with a reasonable refresh rate, which saves time and eff ort. Remote access platform is developed securely through a multi-level security authentication and strong data encryption using the OpenVPN protocol under the Dynamic Domain Name System service. Smart wired and wireless technology—used as integrated sensing devices to the developed SCADA system—enables easy system installation and running cost saving. Finally, to validate the collected data from the newly SCADA designed monitoring system, a performance characterization for the on grid PV system following international standards of yields calculations is carried out for 3 months in 2019.