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47 articles for “lower control limit”
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Control Chart for Attributes based on Inverse Rayleigh Distribution
Abstract: In this paper, a new attribute control chart based on inverse Rayleigh distribution is developed under a time truncated life test. The number of failures is observed from the life test and the fraction nonconforming is to be monitored by two pairs of lower and upper control limits. The simulation study shows the efficiency of the developed chart. An example is provided for illustrating the new control chart.Cite this ArticleKowsalya …
Published in Research & Reviews: Discrete Mathematical Structures · Vol. 5, Issue 3, 2018 · pp. 1–5 Read article
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Design and Analysis of a Lower Control Arm in Car by Finite Element Analysis Approach
Abstract: AbstractSuspension system is the most important part in any vehicle. It directly affects the human safety as well as performance. The lower control arm is a wishbone-shaped metal strut that attaches to the wheel assembly. Structural optimization techniques under static load conditions have been widely used in automobile industry for lightweight vehicle to increase its performance level. This study deals with finite element analysis of the lower control arm of …
Published in Journal of Instrumentation Technology & Innovations · Vol. 8, Issue 2, 2018 · pp. 17–24 Read article
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Arduino Based Temperature Control with PID Controller as Overheat Protector
Abstract: This paper describes a proportional, integral, derivative (PID) temperature controller for overheat protection that is Arduino-based. To regulate and prevent the temperature from rising above a certain threshold, it includes an Arduino UNO board, LM35 temperature sensor, relay, and cooling fan. The system collects temperature readings from the LM35 and delivers them to the Arduino UNO, which processes the data and regulates the output to the relay using a PID …
Published in Journal of Instrumentation Technology & Innovations · Vol. 13, Issue 1, 2023 · pp. 23–28 Read article
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An Analysis of the Impact of School Leadership Styles on the Morale of Teachers and Students Achievements in Nigerian Secondary Schools
Abstract: This study examines how school leadership styles affect student achievement and teacher morale in secondary schools in Nigeria. Given the challenges faced by the Nigerian education system, such as inadequate resources, large class sizes, and socio-economic disparities, the role of effective leadership in shaping educational outcomes is of paramount importance. The research focuses on analyzing how various leadership styles—transformational, transactional, and authoritarian—affect both teacher motivation and student performance in secondary …
Published in International Journal of Education Sciences · Vol. 2, Issue 1, 2025 · pp. 14–28 Read article
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Thermo-hydraulic Performance of Multi-Pass Double-Pipe Heat Exchangers: Integrating Polymer Composite Tube Wall Materials via CFD Parametric Study and Experimental Validation
Abstract: Metallic materials such as steel and copper have traditionally dominated heat exchanger manufacturing because of their excellent thermal conductivity, mechanical strength, and long-established industrial reliability. However, their high weight, susceptibility to corrosion in aggressive operating environments, and inability to provide tunable thermal properties have motivated interest in alternative materials for next-generation thermal systems. Thermally conductive polymer composites reinforced with graphene nanoplatelets (GNP), boron nitride (BN), and carbon-based fillers offer an …
Published in Journal of Polymer & Composites · Vol. 14, Issue 5, 2026 Read article
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Memory Reclamation Behavior Under cgroups v2 Versus Legacy cgroups: A Measurement Framework for Containerized Workloads
Abstract: Linux control groups (cgroups) are the kernel mechanism that lets container runtimes such as Docker, containerd, and CRI-O enforce per-container CPU, memory, and I/O limits, and the transition from the legacy cgroups v1 hierarchy to the unified cgroups v2 hierarchy changed several aspects of how the memory controller signals and responds to reclaim pressure most notably through the introduction of memory.low/memory.high soft-limit semantics and system-wide Pressure Stall Information (PSI). Kernel …
Published in Recent Trends in Parallel Computing · Vol. 13, Issue 2, 2026 · pp. 27–34 Read article
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A Review on Polymeric Nano-particles
Abstract: Conventional drugs have major demerits of poor biodistribution, decreased effectiveness and less targeting effect. Strategies like controlling drug delivery can potentially overcome these limitations by transporting drug to the place of action. The polymeric nanoparticles (PNPs) are prepared from biocompatible and biodegradable polymers in size between 1–1000 nm. PNPs are suitable carriers for drug delivery to specific target site; such an advantage improves the drug safety and lowers toxicity. In …
Published in Trends in Drug Delivery · Vol. 6, Issue 1, 2019 · pp. 1–7 Read article
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A Clinical Study based Observation on Prevalence of Altered Liver Enzymes among Patients of Hepatobiliary Diseases Attending National Institute of Unani Medicine, India
Abstract: Background: Hepatobiliary disease is a major health problem responsible for millions of deaths annually. As reported, more than 40 million deaths occur annually in South-East Asia Region due to hepatobiliary diseases. This study was conducted as a clinical trial to assess the efficacy of Unani formulation, from which the data on prevalence of altered liver enzymes among patients of hepatobiliary diseases in which the study participants were collected and compiled …
Published in Research and Reviews: A Journal of Medicine · Vol. 11, Issue 1, 2021 · pp. 5–11 Read article
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Microbial Population Dynamics during Phytobioremediation of Hydrocarbon- Contaminated Swampy and Clay Soils
Abstract: Soil contamination by petroleum hydrocarbons remains a critical environmental challenge, particularly in wetland and clay-rich ecosystems where natural attenuation processes are often limited. This study investigates the response of total heterotrophic bacteria (THB) during the bioremediation of hydrocarbon-contaminated swampy and clay soils amended with Moringa oleifera biomass and elephant grass (Pennisetum purpureum). The objective was to evaluate microbial population dynamics under varying amendment dosages and to identify treatment conditions favorable …
Published in Emerging Trends in Chemical Engineering · Vol. 13, Issue 1, 2026 · pp. 31–35 Read article
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Performance Based Seismic Evaluation of G+12 RCC Structures in Seismic Zone IV with and without Corner Shear Walls Considering Soil Types I, II, and III
Abstract: Seismic behavior of multi-storey buildings is significantly influenced by structural stiffness and supporting soil conditions. This study investigates the seismic response of a G+12 reinforced concrete building by comparing two structural configurations, namely buildings with shear walls and buildings without shear walls, under three soil conditions: Type I, Type II, and Type III soils. The analysis is carried out using the response spectrum method in accordance with IS 1893 (Part …
Published in Recent Trends in Civil Engineering & Technology · Vol. 16, Issue 2, 2026 · pp. 1–14 Read article
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Optimized Design and Control of Oil Exploitation Strategies: An Assisted Approach
Abstract: Because there are so many factors and scenarios to consider, optimizing oil exploitation tactics requires complicated decision-making. Conventional approaches frequently concentrate on particular elements of the design infrastructure, which restricts their capacity to fully handle the process. In order to maximize a set of oil exploitation variables in a hierarchical fashion, this research proposes a novel assisted optimization technique that combines mathematical algorithms with engineering analysis. By grouping variables into …
Published in Journal of Petroleum Engineering & Technology · Vol. 15, Issue 1, 2025 · pp. 29–34 Read article
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Sustainable Membrane Technologies for Environmental and Industrial Applications: A Review
Abstract: Membrane-based technologies have become indispensable in addressing global environmental and industrial challenges, including water scarcity, pollution control, and energy efficiency. While conventional membranes provide high selectivity and process efficiency, their sustainability is limited by factors such as fouling, high energy consumption, and end-of-life waste management. Recent advances in material science, nanotechnology, and bio-inspired design have led to the emergence of sustainable membranes with improved durability, lower environmental footprint, and broader …
Published in International Journal of Membranes · Vol. 2, Issue 2, 2025 · pp. 7–12 Read article
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Quantitative Study on the Impact of Holding Duration on Unfiltered FFP Composition
Abstract: Ensuring the safety and quality of transfusion products is a cornerstone of transfusion medicine. The presence of leucocytes in blood components can lead to adverse reactions and increase the likelihood of transfusion-related complications, highlighting the importance of minimizing their content prior to transfusion. Elevated leucocyte levels have been detected in unfiltered fresh frozen plasma (FFP) units prepared from whole blood processed after a short holding time (SHT) – the interval …
Published in International Journal of Antibiotics · Vol. 3, Issue 2, 2026 · pp. 49–63 Read article
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Voltage Stability Study based on New Evolutionary Algorithm
Abstract: This paper describes a PSO optimization algorithm for voltage stability study and its enhancement based on proximity and mechanism analysis. This theorem is implemented based on Gershgorin’s Circle Theorem. The control variables responsible for enhancing the voltage stability limit are generator bus voltages at PV buses, the taps of On-Load –Tap-Changing Transformer. (OLTC), change in reactive power etc. The objective function of proposed algorithm is to maximize the minimal diagonal …
Published in Trends in Electrical Engineering · Vol. 7, Issue 2, 2017 · pp. 21–31 Read article
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Design and Development of Control and Management Systems for Smart Homes
Abstract: The smart home and management system in this study are powered by D.C. batteries. Before running out of power, a fully charged battery can last for 2 to 3 days. When you turn on the system, the maximum temperature and the name of the study are shown on the LCD. Additionally, it will demonstrate that no one is in the house. As more individuals enter the house after you click …
Published in Journal of Software Engineering Tools & Technology Trends · Vol. 9, Issue 2, 2022 · pp. 12–29 Read article
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Gravel Scrap Tires Admixed Drainage Material in Landfill Leachate Collection System
Abstract: Amidst water for sustenance, underground water quality becomes further deterministic. The stance of its continual contamination due to infiltration, uncontrolled industrialization, unplanned inhabitation, etc., is making “quantity” meaningless unless maintenance of quality is addressed. One of the potent measures to combat this infiltration is creation of a semi-impervious media below the subsoil, which may regulate the outcome judiciously, and in a proffered way. The logistics, however, do not allow planned …
Published in Recent Trends in Civil Engineering & Technology · Vol. 3, Issue 3, 2013 · pp. 11–28 Read article
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A Brief Review On Nanoparticles Drug Delivery System Used In Cervical Cancer
Abstract: Among cervical tumor-related deaths worldwide, cervical cancer is a major cause. The limitations of traditional methods, such as chemotherapy and radiation therapy, stem from their adverse effects and increased susceptibility to medications. Despite being seen as innovative options, immune checkpoint inhibitors (ICIs) have rather low clinical response rates. Reliable treatments for patients with metastatic or recurring cervical cancer are currently lacking. Lately, nanomaterials including polymers, liposomes, and dendrimers have been …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 15, Issue 1, 2025 · pp. 30–40 Read article
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Health Risk and Evaluation of Atmospheric Pollutants in Owerri Metropolis and Sub-Urban Areas of Imo State, Nigeria Using Chemometric Models
Abstract: Concern about health risk from atmospheric pollutants; Particulate Matter (PM10), Sulphur dioxide (SO2), Nitrogen dioxide (NO2) and Carbon Monoxide (CO) prompted atmospheric monitoring and inhalation health risk assessment for residents of Owerri Metropolis and its Sub-urban areas. Field measurements were carried out in 35 select locations within Imo State. Monitoring was carried out using Chemometric methods as Matrix Laboratory (MATLAB) and Artificial Neural Network (ANN). According to the experiment results, …
Published in Research & Reviews : Journal of Statistics · Vol. 13, Issue 1, 2024 · pp. 47–79 Read article
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Implementation of Energy-efficient Axial Fans for Air Handling Unit Using AI Model
Abstract: This research explores the integration of energy-efficient axial fans in Air Handling Units (AHUs) within a large automotive manufacturing facility to enhance HVAC (heating, ventilation, and air conditioning) performance and reduce energy consumption. Standard AHUs in the facility’s clean rooms and other spaces utilize traditional blower fans, which primarily rely on static pressure, limiting their efficiency. By replacing these with electronically commutated (EC) axial flow fans, which leverage both static …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 11, Issue 3, 2024 · pp. 28–34 Read article
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Effects of Sub-Zero Temperatures on the Viscoelastic Properties of Magnetorheological Elastomer
Abstract: Magnetorheological elastomers (MREs) are smart materials capable of tuneable stiffness and damping under applied magnetic fields. This renders the material as a promising candidate for adaptive vibration control and semi-active engineering applications. While their behaviour at elevated temperatures has been widely explored, limited attention has been given to their performance under sub-zero conditions, which are critical for cold-environment applications. As this has become an important concern, the study investigates the …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 · pp. 326–340 Read article