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Factors Influencing Certified Nursing Assistant Fatigue In Urban And Rural Counties, Catherine Carr Apr 2026

Factors Influencing Certified Nursing Assistant Fatigue In Urban And Rural Counties, Catherine Carr

Butler Journal of Undergraduate Research

Certified nursing assistants (CNAs) are highly vulnerable to fatigue as they continue to be faced with challenges such as understaffing and long hours, working to take care of people in all types of healthcare facilities; however, the most influential factors of fatigue as it pertains to their specific environment have yet to be elucidated. This study investigates the factors influencing CNA fatigue in urban and rural counties to determine which factors have the most significant impact, as well as whether the type of county contributes to differences in prevalence. A rapid qualitative analysis was conducted using interviews regarding the experience …


Collegiate Experiences Of Genderqueer And Nonbinary Youth, Angela Clark-Taylor, Alexandra Kay Hicks, Heather Johnson Apr 2026

Collegiate Experiences Of Genderqueer And Nonbinary Youth, Angela Clark-Taylor, Alexandra Kay Hicks, Heather Johnson

New York Journal of Student Affairs

This study explores the collegiate experiences of genderqueer and nonbinary students, frequently marginalized in higher education research. While scholarship on transgender students has expanded, it often centers on binary identities, thereby excluding those who identify outside the man-woman dichotomy. This research responds to that gap by asking: What are the experiences of nonbinary students in college? Drawing on in-depth interviews with six genderqueer and nonbinary undergraduate students, the study amplifies their voices to challenge dominant gender norms and essentialist narratives within academic spaces. Participants shared experiences of systemic erasure, invalidation, and microaggressions, as well as the resilience and strategies they …


Efficient Energy Management In Networked Microgrids Using Multi-Agent Deep Reinforcement Learning In The Presence Of Uncertainties, Ayodele Benjamin Chukwuyem Apr 2026

Efficient Energy Management In Networked Microgrids Using Multi-Agent Deep Reinforcement Learning In The Presence Of Uncertainties, Ayodele Benjamin Chukwuyem

Thesis/ Dissertation Defenses

Microgrid technology is essential in facilitating the transition to smart energy grids in developed countries and mitigating energy poverty in developing countries, particularly in areas where grid extensions are not feasible. Recently, the concept of networked microgrids (NMGs) has garnered tremendous attention due to the plausibility of interactions among interconnected microgrids leading to power networks that are more resilient, reliable, and stable. However, because each microgrid has diverse distributed generation resources (renewables and controllable generators) and each microgrid operator (MO) has different objectives, coordinated energy management is required to satisfy local and system-wide goals under conditions with significant uncertainty. Existing …


Reflections On Language And Translation: Toward A "Translation Turn" In Archival Studies, Fiorella Foscarini Apr 2026

Reflections On Language And Translation: Toward A "Translation Turn" In Archival Studies, Fiorella Foscarini

Journal of Contemporary Archival Studies

As the dominant lingua franca, the English language acts as an invisible, hegemonic force that exerts a strong influence over the framing of the global world. By using English unreflexively in research, education, and professional cross-cultural exchanges, we may unwittingly support unequal power structures, the homogenization of research, and the marginalization of traditions and knowledge systems based on languages other than English. In most cases where translation is involved, the translating act is treated as a fait accompli or a mere technical process, without acknowledging that exact equivalence is impossible to achieve, and that translation has important epistemological, methodological, …


From Sequence To Skill: Building Argumentative Writers Through Structured Inquiry, Elizabeth Huffmaster Apr 2026

From Sequence To Skill: Building Argumentative Writers Through Structured Inquiry, Elizabeth Huffmaster

Create@State

This research project examines the National Writing Project’s College, Career, and Community Writers’ Program (C3WP) and other resources that assist teachers in developing a multi-lesson argumentative writing instructional sequence. The project curated the entire process of writing an argumentative essay with pre-selected topics and resources for students to explore as small groups in order to contribute to class-wide discussion(s), which connect to the Self-Regulation and Constructivism learning theories. In addition to the outline of an instructional sequence, student resources such as guided note organizers and a peer-review rubric were developed, demonstrating how teachers adapt instructional materials. The significance of this …


Russian Linguistic Policy In The Post-Soviet World, Payton G. Deichler Apr 2026

Russian Linguistic Policy In The Post-Soviet World, Payton G. Deichler

The Dialogue

This paper examines the role of the Russian language as an instrument of soft power in the post-Soviet space, arguing that its geopolitical influence extends beyond demographic prevalence to the institutional frameworks through which it is promoted and mediated. Rather than functioning solely as a neutral medium of communication, Russian operates as an infrastructural component of influence that shapes access to media ecosystems, educational systems, and professional mobility across former Soviet republics. Drawing on the concept of a “Monopoly of Interpretation,” this study proposes that the centralized, state-linked promotion of Russian enables the consolidation of political narratives within shared linguistic …


Maritime Piracy In The Straits Of Malacca And Singapore, Brian Kenny Apr 2026

Maritime Piracy In The Straits Of Malacca And Singapore, Brian Kenny

The Political Realm: Journal of Undergraduate Research in Political Science and International Relations

This article examines the sharp rise in maritime piracy in the Straits of Malacca and Singapore, arguing that the surge stems from the convergence of structural vulnerabilities—dense shipping traffic, poverty-driven motivated offenders, and limited state enforcement capacity—now intensified by global supply chain disruptions and new technologies. It shows that piracy, though currently less violent than in past decades, poses significant economic and security risks for Southeast Asia and the broader global economy. The paper concludes that effective long‑term mitigation requires both strengthened regional maritime cooperation and domestic reforms addressing the socioeconomic roots of piracy, particularly in Indonesia.


Artificial Intelligence For Customer Relationship Management In The Nigerian Commercial Banking Sector, David Tobi Akobe, Wallace Chigona, Laban Bagui Apr 2026

Artificial Intelligence For Customer Relationship Management In The Nigerian Commercial Banking Sector, David Tobi Akobe, Wallace Chigona, Laban Bagui

The African Journal of Information Systems

The continuous increase in the volume of customer data stored by commercial banks necessitates the use of artificial intelligence (AI) technologies to enhance customer retention and satisfaction. While a few Nigerian commercial banks do currently leverage these technologies, a significant knowledge gap limits their use across the wider Nigerian commercial banking sector. Guided by Organizational Information Processing (OIP) theory, we carried out a multiple case study to explore how AI technologies were utilized in three commercial banks in Nigeria. Purposive sampling was used to select experienced data professionals employed by these banks and semi-structured interviews were conducted to collect data. …


Evaluation Of The Compliance Of Ultra-Low Dose Drugs Available In Local Iraqi Markets With Regulatory Weight Variation Test, Yousif K. Younis Apr 2026

Evaluation Of The Compliance Of Ultra-Low Dose Drugs Available In Local Iraqi Markets With Regulatory Weight Variation Test, Yousif K. Younis

Al-Mustaqbal Journal of Pharmaceutical and Medical Sciences

Mixing and formulation of drugs with very low dose is a brutal challenge to formulators sometimes due to all kinds of difficulties like segregation, content uniformity and physicochemical stability issues. A careful consideration of all related factors is essential during manufacturing of very low dose drug products. The aim of this study is to evaluate the quality control of ultra-low dose drugs of different companies available in local Iraqi and their compliance with regulatory weight variation test. Quantitative analysis conducted to five drugs using weight variation technique with 20 randomly selected tablets for each drug. All of these drugs passed …


Ethnopharmacology, Phytochemistry, And Pharmacological Potential Of Philenoptera Laxiflora: An Emerging African Medicinal Plant For Drug Discovery, Albashir Tahir Apr 2026

Ethnopharmacology, Phytochemistry, And Pharmacological Potential Of Philenoptera Laxiflora: An Emerging African Medicinal Plant For Drug Discovery, Albashir Tahir

Al-Mustaqbal Journal of Pharmaceutical and Medical Sciences

Medicinal plants remain an important source of therapeutic agents and play a significant role in modern drug discovery. Philenoptera laxiflora (Fabaceae) is a tropical African plant widely used in traditional medicine, but the scientific evidence supporting its therapeutic potential remains fragmented. This review aims to comprehensively summarize the current knowledge on the ethnomedicinal uses, phytochemical composition, pharmacological activities, and toxicological profile of P. laxiflora, while highlighting research gaps and future directions for drug discovery. A comprehensive literature search was conducted using electronic scientific databases, including PubMed, Google Scholar, Scopus, Web of Science, and ScienceDirect. Relevant publications on the ethnobotany, …


Cfd-Based Thermal Performance Analysis Of Dimpled And Grooved Heat Pipes, Mazen M. Othayq, Khalid M. Alanazi Apr 2026

Cfd-Based Thermal Performance Analysis Of Dimpled And Grooved Heat Pipes, Mazen M. Othayq, Khalid M. Alanazi

Yanbu Journal of Engineering and Science

Heat-transfer enhancement techniques such as fins, dimples, and grooves are widely employed to improve the thermal performance of heat exchangers; however, their application is often accompanied by increased pressure losses. Most existing studies investigate a single enhancement technique over a limited Reynolds number range, with few comparative analyses conducted at high Reynolds numbers using identical geometries. Therefore, this study numerically investigates the thermal–hydraulic performance of five pipe configurations using Computational Fluid Dynamics (CFD). All geometries share the same diameter (48.34 mm) and length (7.45 m) and are examined over a Reynolds number range of 4,000–57,000. The configurations include: (1) smooth …


Optimizing The Interaction Between Rotational Speed, Tool Geometry, And Cooling Conditions In Friction Stir Welding Of Aa6061, Karwan B. Mohammed, Ayad F. Shahab Apr 2026

Optimizing The Interaction Between Rotational Speed, Tool Geometry, And Cooling Conditions In Friction Stir Welding Of Aa6061, Karwan B. Mohammed, Ayad F. Shahab

Engineering and Technology Journal

Friction stir welding (FSW) is a solid-state joining process. It is widely suitable for welding high-strength aluminum alloys. This study presents a systematic optimization of friction stir welding parameters for AA6061-T6 aluminum alloy by investigating the interaction effects of tool rotational speed, tool pin geometry, and cooling conditions. A Taguchi L27 orthogonal array was employed to examine three rotational speeds (820, 1120, and 1420 rpm), three pin profiles (square, triangular, and tapered), and three cooling conditions (compressed air, water, and crushed ice) while maintain a constant traverse speed of 35 mm/min. Mechanical performance was evaluated through tensile testing and stir-zone …


Stratified Deception-Inference Architecture (Sdia) - A Multi-Layer Adversarial Intelligence Framework For Log Semantics, Intent Inference, And Deception-Aware Observability Systems, Johny Manuel-Devadoss Apr 2026

Stratified Deception-Inference Architecture (Sdia) - A Multi-Layer Adversarial Intelligence Framework For Log Semantics, Intent Inference, And Deception-Aware Observability Systems, Johny Manuel-Devadoss

Defensive Publications Series

Modern observability systems treat logs, traces, and metrics as noisy data sources requiring denoising, aggregation, and statistical anomaly detection. However, this assumption breaks down in adversarial, highly distributed, or rapidly evolving systems where signals may be incomplete, obfuscated, or implicitly deceptive due to system complexity, emergent behaviors, or malicious interference.I propose the Stratified Deception-Inference Architecture (SDIA), a hierarchical cognitive framework that reinterprets observability data as an adversarial communication system rather than a passive telemetry stream. Inspired by strategic deception paradigms from classical warfare, SDIA introduces a multi-layer architecture that explicitly models noise, semantic drift, and hidden intent as first-class computational …


On-Device Multi-Sensor Fusion With Machine Learning For Continuous Transit Navigation, Hui Ling Shi, Louis Lai, Oliver Dolk, Gul Kamisli Hasanoglu, Si Min Ong Apr 2026

On-Device Multi-Sensor Fusion With Machine Learning For Continuous Transit Navigation, Hui Ling Shi, Louis Lai, Oliver Dolk, Gul Kamisli Hasanoglu, Si Min Ong

Defensive Publications Series

Mobile navigation applications for public transit can experience degraded performance in environments with poor global positioning system signals, such as subway tunnels, which may cause a user's location display to freeze and guidance to cease. A described on-device system may address this by fusing data from a plurality of sensors, such as a barometer, magnetometer, and accelerometer, on a computing device like a smartphone or wearable device. A lightweight machine learning model can process this sensor data to generate a real-time probability that the user is on a moving transit vehicle. This probability may then be combined with a user's …


Hardware-Assisted Microarchitectural Context Cache With Kernel-Guided Predictive Prefetching For Efficient Context Restoration, N/A Apr 2026

Hardware-Assisted Microarchitectural Context Cache With Kernel-Guided Predictive Prefetching For Efficient Context Restoration, N/A

Defensive Publications Series

A hardware-assisted Temporal Context Cache (TCC) system is described, including dedicated recorder and loader, integrated with each CPU core and interacting with a global context cache, as well as a controller component of which there may be several instances per SOC. During execution the recorder captures critical microarchitectural state, which may include L2 cache line addresses, L1 instruction cache addresses, branch prediction metadata, TLB state, prefetcher metadata, storing it in a local cache. When a thread yields or is preempted, the recorder saves this data to a global context cache asynchronously. The kernel scheduler then informs the hardware controller of …


Pinning Messages In Large Language Model Chat Interfaces, Florian Hartmann, Victor Carbune Apr 2026

Pinning Messages In Large Language Model Chat Interfaces, Florian Hartmann, Victor Carbune

Defensive Publications Series

A lack of persistent message visibility in large language model chat interfaces often requires users to repeatedly request information or results in the model regenerating previously provided content. This disclosure describes a method for pinning specific messages within a chat thread to ensure they remain visible regardless of scrolling position. The core technology involves an inference flow where either a user or the model identifies a message to be pinned via a user interface or tool call. Metadata regarding the pinned status is integrated into the model prompt, enabling the model to reference or highlight specific sections of the pinned …


Refractive Index Determination Of Rectangular Optical Slabs Using Modified Ray Tracing Method, Ubong Williams Robert, Sunday Edet Etuk, Okechukwu Ebuka Agbasi Apr 2026

Refractive Index Determination Of Rectangular Optical Slabs Using Modified Ray Tracing Method, Ubong Williams Robert, Sunday Edet Etuk, Okechukwu Ebuka Agbasi

Engineering and Technology Journal

The traditional ray tracing method (TRM) for determining the refractive index of optical materials is often time-consuming and poses challenges for individuals with visual impairments. Accurate refractive index determination is essential for selecting materials in optical instruments, optoelectronic devices, and optical communication systems. With the emergence of new materials, there is an increasing need for techniques that overcome the limitations of the TRM. In this study, a Modified Ray Tracing Method (MRTM) incorporating the use of a plane mirror to enhance image localisation and reduce alignment ambiguity was developed for determining the refractive indices of various optical materials, including soda, …


The Impact Of People Interests In Evaluating The Open Public Spaces' Quality In The City Centre, Hasan Hadi, Adil Al-Saidi, Haitham Alshamari Apr 2026

The Impact Of People Interests In Evaluating The Open Public Spaces' Quality In The City Centre, Hasan Hadi, Adil Al-Saidi, Haitham Alshamari

HBRC Journal

The quality of open public spaces in city centres significantly affects people's satisfaction and responses to their built environment. The significance of these areas allow people to assess their performance. this paper addresses the issue of People's interests that affect their evaluation of public urban spaces in city centres. The research applied an ontological methodology that is people's experiences determine the spatial quality of the public spaces in city centres. In order to discover and assess the seven value variables, it recommended diagnosing a random sample of users as a group (A) and (B). The urban space in the historic …


Ultra Vires Dan Pertanggungjawaban Direksi, Chatamarrasjid Ais Apr 2026

Ultra Vires Dan Pertanggungjawaban Direksi, Chatamarrasjid Ais

Jurnal Hukum & Pembangunan

Abstract


Commerce Identity Backend For Deterministic Online-To-Offline Transaction Attribution, Keith Hall, Alan Stapelberg Apr 2026

Commerce Identity Backend For Deterministic Online-To-Offline Transaction Attribution, Keith Hall, Alan Stapelberg

Defensive Publications Series

Connecting a user's online discovery with their offline purchasing behavior can be challenging due to fragmented ecosystems and a lack of visibility at physical point of sale (POS) terminals, which can impede transaction attribution. A headless commerce identity backend system is described that can address this gap by establishing a cloud-based account-level primitive. This primitive may use a payment account reference, a stable, non-sensitive identifier, as a federated key to map a user's account to their offline transactions. Such an architecture can facilitate the ingestion of stock keeping unit-level receipt data from POS terminals (e.g., cash registers, payment kiosks) via …


5t-Isc-Awg Technical Addendum 8, Vesa Olavi Lius Apr 2026

5t-Isc-Awg Technical Addendum 8, Vesa Olavi Lius

Defensive Publications Series

This Addendum extends the 5T-ISC-AWG Defensive Publication (2026) with a rigorous long-term thermal balance analysis of the bedrock-tunnel condenser, addressing a question that the parent publication acknowledged as a known limitation but did not quantify in detail: how the plant maintains passive operation over decadal timescales when the bedrock condenser is continuously absorbing latent heat of condensation at megawatt-class rates. The analysis confirms that the published Nordic and Mediterranean yields (0.93 and 1.16 ML/day respectively) are fully sustainable in passive 24/7 operation, and identifies the physical mechanisms through which long-term thermal balance is achieved: dew-point-pinning of the warm inlet wall …


Mapping The Void In Electric Vehicle (Ev) Adoption Research: Uncovering Lack Of Socio-Economic Study In The Global South, Satvik Pandey, Rahul Tiwari, Rajat Soni Apr 2026

Mapping The Void In Electric Vehicle (Ev) Adoption Research: Uncovering Lack Of Socio-Economic Study In The Global South, Satvik Pandey, Rahul Tiwari, Rajat Soni

Mansoura Engineering Journal

Electric Vehicles (EVs) are considered an effective contemporary alternative to Internal Combustion Engine (ICE) vehicles. Research in the domain of EV is being conducted globally across a variety of fields; among them, our study explored research on consumer adoption. Going through the bibliometric analysis of the data taken from the Scopus database, what came to our attention is the minimal amount of work that is done on understanding consumers of EVs. From the literature, we found that consumer preferences are shaped through the influence of several parameters related to EVs, and this influence varies according to the consumer’s socio-economic and …


Optimized Bombax Ceiba/Jute Hybrid Epoxy Composites For Enhanced Thermal Insulation Performance, Shadman Ahmed Khan, Naeem Ahmmed, Md Tanvir Hossain, Abdullah Ibn Asheque, Md Ariful Islam, Md Abdul Kader, Md Sohel Rana, Sakib Masud Apr 2026

Optimized Bombax Ceiba/Jute Hybrid Epoxy Composites For Enhanced Thermal Insulation Performance, Shadman Ahmed Khan, Naeem Ahmmed, Md Tanvir Hossain, Abdullah Ibn Asheque, Md Ariful Islam, Md Abdul Kader, Md Sohel Rana, Sakib Masud

Michigan Tech Publications

The development of sustainable hybrid natural-fiber composites provides a practical way toward lightweight materials with tailored mechanical and thermal performance. In this study, Bombax ceiba (BC)/jute hybrid epoxy composites were fabricated using a stacked preform followed by compression molding, and the effect of fiber blending ratio on mechanical, thermal, and microstructural properties was systematically investigated. Three compositions-40/60, 50/50, and 60/40 BC/jute by weight-were evaluated. Mechanical testing showed that the J50 composite, with a balanced fiber ratio, exhibited superior flexural strength and impact resistance, indicating effective hybrid synergy and improved stress transfer between fibers and the matrix. Thermogravimetric analysis showed that …


Culturally Tailored Materials For Smoking Cessation And Hiv Care Adherence Among Hispanic Adults: Protocol For Content Development And Formative Evaluation, Lorra Garey, Jacqueline J Charles, Ashley L Ruiz, Rodrigo Castillo-Avilés, Virmarie Correa-Fernández, Marshall K Cheney, Thomas P Giordano, Michael J Zvolensky Apr 2026

Culturally Tailored Materials For Smoking Cessation And Hiv Care Adherence Among Hispanic Adults: Protocol For Content Development And Formative Evaluation, Lorra Garey, Jacqueline J Charles, Ashley L Ruiz, Rodrigo Castillo-Avilés, Virmarie Correa-Fernández, Marshall K Cheney, Thomas P Giordano, Michael J Zvolensky

Faculty, Staff and Students Publications

Background: Hispanic people with HIV who smoke cigarettes experience unique stressors (eg, stigma), which contribute to health disparities. Anxiety sensitivity (AS) may worsen mood management problems, which are a leading barrier to smoking cessation. Interventions targeting AS can improve HIV-specific outcomes and smoking cessation. However, no prior research has culturally tailored an AS reduction program to improve quality of life among Hispanic people with HIV who smoke. The research team previously developed a mobile health (mHealth) intervention addressing AS reduction, smoking cessation, and HIV care management for Black people with HIV who smoke. Building on this work, this study represents …


The Parthenon, April 29, 2026, Baylee Parsons, Kaitlyn Fleming, Abby Ayes, Ella Hatfield, Davina Snyder, Scott Price, Trista Honaker, Tally Mamula Apr 2026

The Parthenon, April 29, 2026, Baylee Parsons, Kaitlyn Fleming, Abby Ayes, Ella Hatfield, Davina Snyder, Scott Price, Trista Honaker, Tally Mamula

The Parthenon

No abstract provided.


Communication Strategies To Support Collections And Budget Management, Evan Rusch, Heidi J. Southworth, Nat Gustafson-Sundell, Lisa Baures, Daardi Mixon, Joe Holtermann Apr 2026

Communication Strategies To Support Collections And Budget Management, Evan Rusch, Heidi J. Southworth, Nat Gustafson-Sundell, Lisa Baures, Daardi Mixon, Joe Holtermann

Library Services Publications

As budget management grows more challenging, we will need to communicate as successfully as possible to achieve the best possible outcomes. Communication with departments and administration about budget management and related changes to collections can be crucial to maintain constructive relationships and to improve cooperative planning. Academic libraries often rely on librarian liaisons to communicate directly with departments, but additional communication efforts are sometimes pursued. Our library has recently focused on collections communication across a range of projects and audiences. These projects have included a budget reduction plan and major print deselection project, as well as ongoing, prospective budget management. …


April 29, 2026 General Faculty Minutes, University Of South Carolina Apr 2026

April 29, 2026 General Faculty Minutes, University Of South Carolina

Faculty Senate

No abstract provided.


Automated, Modular, Agentless Adversarial Emulation In Cloud Environments For Higher Education And Student Training, Doc Harley Apr 2026

Automated, Modular, Agentless Adversarial Emulation In Cloud Environments For Higher Education And Student Training, Doc Harley

Senior Honors Theses

Currently, the leading technologies in the market of adversarial emulation are MITRE Caldera, Atomic Red Team by IBM, and multiple proprietary products that come with support packages for different vendors like AttackIQ, Cymulate, SafeBreach, and many more. While it is clear that much work has been done in the broad category of adversarial emulation, when it comes to open source solutions, there are no agentless options with built in automation and modularity that have good support for cloud environments. Agentless adversarial emulation provides a unique advantage in that it can be both simpler and a better representation of the true …


Changing Employee Motivation From Obligation To Opportunity: Increasing Intrinsic Motivation In Non-Profit Organizations, Evelyn L. Williams Apr 2026

Changing Employee Motivation From Obligation To Opportunity: Increasing Intrinsic Motivation In Non-Profit Organizations, Evelyn L. Williams

Senior Honors Theses

Motivation is a key driver behind tasks within the workforce. Harnessing employee motivation increases productivity, employee retention, efficiency, and output quality. Non-profit organizations, however, are often unable to devote resources to externally increasing motivation. This study presents a motivational model that is built from three motivation theories: Maslow’s Hierarchy of Needs, Herzberg’s Two Factor Theory, and Self-Determination theory. By incorporating principles from these theories this model helps organizations internalize and increase the effectiveness of their employees’ motivation through increasing the autonomy, competence, and relationality felt by each employee. The six tenets of the REWARD model give non-profit organizations a framework …


The Pid-Based Three Quadcopter Uavs Formation Control Under External Disturbance, Vo Van An, Trinh Luong Mien Apr 2026

The Pid-Based Three Quadcopter Uavs Formation Control Under External Disturbance, Vo Van An, Trinh Luong Mien

Makara Journal of Technology

This paper presents the design and evaluation of a formation control strategy for three quadcopter UAVs, based on a PID controller in a leader–follower structure, under the influence of external disturbances. Each UAV employs a six-degree of-freedom dynamic model and utilises a cascade PID control architecture, in which the inner control loop stabilises the attitude. In contrast, the outer control loop regulates position and maintains the formation. The PID parameters are tuned using the Ziegler–Nichols method to ensure simple implementation and low computational cost. The performance of the control system is evaluated through simulations in the MATLAB environment for two …