Search
1960 articles for “4” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
-
Performance Analysis of Carrier Frequency Offset (CFO) and Phase Noise in 4G Communication System
Abstract: For telecommunication services the dramatic shift in the market has been made in beginning of 21st century. In these days' communication network the key challenges is to integrate numerous serves, convey the additional data as expeditiously as doable through limited bandwidth and providing high information data rates. For 4G communication systems 3GPP introduced two features Higher Order Modulation and Multiple Input Multiple Output (MIMO) in OFDM system but one limiting …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 3, Issue 1, 2016 · pp. 33–46 Read article
-
Effect of alloying elements addition and solidification time on nodularity of 400/15 SGI casting – A Review’’
Abstract: SGI Casting is most important Casting process. As specially SGI Casting is Graded Casting so it is difficult to maintain all composition. Spheroidal graphite iron castings has been increasing constantly all over the world. In the recent years there has been increasing interest in the microstructure analysis of SGI castings. So analyze the Alloying elements effect on the microstructure particularly nodularity of SGI 400/15 grade material and also effect of …
Published in Trends in Mechanical Engineering & Technology · Vol. 10, Issue 3, 2020 · pp. 29–35 Read article
-
Effects of Variation of Differential Gain and Injection Current on the Performance Characteristics of the Designed 405 nm MQW Violet Laser
Abstract: AbstractIn this work the Designing and Performance Analysis of a 405 nm InGaN based multi quantum well (MQW) Violet Laser have been presented. The internal designing of 405nm Violet Laser has been done with appropriate calculation. The desired wavelength of 405nm was obtained by adjusting the exact concentration of In0.0979Ga0.9021N / Al0.07Ga0.93N. The effects on Rate Equations by varying the differential gain and Injection current have been observed. Also the …
Published in Trends in Opto-electro & Optical Communication · Vol. 4, Issue 1, 2014 · pp. 13–22 Read article
-
Revolutionizing Material Flow and Handling: Industry 4.0 Integration in Logistics Management
Abstract: The integration of Industry 4.0 technologies has become pivotal in reshaping material flow and handling paradigms within logistics management. This paper presents an in-depth analysis of this transformative phenomenon. Industry 4.0's emergence has heralded an era of unprecedented automation, seamless data exchange, and cutting-edge technologies, fundamentally altering conventional logistics practices. Through an extensive review of recent literature, this study meticulously examines the profound impact of Industry 4.0 on material flow …
Published in International Journal of Advanced Robotics and Automation Technology · Vol. 2, Issue 1, 2024 · pp. 24–34 Read article
-
Synthesis of Magnetically Recoverable Nickel (II) Complex-Functionalized Fe 3 O 4 @ISNA (ISNA= Isonicotinic acid) Nanomaterials: Catalytic Studies on Nitrophenol Reduction and TD- DFT Studies
Abstract: In this study, we aimed to develop a novel, environmentally sustainable, and magnetically separable heterogeneous nanocatalyst, denoted as Fe 3 O 4 @ISNA@NiL (where L represents the ligand). The synthesis involved a two-step process, first, isonicotinic acid was chemically grafted onto the surface of iron oxide nanoparticles (Fe 3 O 4 ) to introduce functional groups capable of further chemical modification. Subsequently, a nickel(II) Schiff base monomeric complex was anchored …
Published in Journal of Polymer & Composites Read article
-
Effect of 4-Week Protocol of Kegel Exercise on Pelvic Floor Strength on a Patient with Ovarian Endometriosis—A Case Report
Abstract: Purpose: The purpose of this case study was to describe the effects of Kegel exercise in a 4-week protocol for a patient with endometriosis associated with urinary incontinence. Case description: A 23-year-old female patient presented with chronic low back pain and also complained of difficulty in holding urine and leakage while doing forceful activities like lifting heavy objects, coughing, and sneezing in the past 6 months. She also complained of …
Published in International Journal of Women's Health Nursing And Practices · Vol. 3, Issue 1, 2025 · pp. 9–14 Read article
-
A Decade of Research on Polymer Manufacturing and Industry 4.0 Integration: A Comprehensive Bibliometric Review of Industry
Abstract: The advent of Industry 4.0 has brought a transformative revolution to the manufacturing sector by integrating advanced polymer technologies with intelligent, interconnected, and data-driven production systems. These developments have significantly reshaped industrial operations by improving efficiency, enhancing production flexibility, and enabling innovative manufacturing practices. Smart polymer processing, supported by automation, artificial intelligence, the Internet of Things (IoT), and real-time data analytics, allows manufacturers to optimize resource utilization, reduce waste, and …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 1897–1905 Read article
-
Design and Implementation of a 4-Bit Breadboard CPU Using Digital Integrated Circuits
Abstract: This paper presents the design and hardware realization of a simple 4-bit CPU built using discrete TTL integrated circuits on a breadboard. The CPU employs a 4-bit common data bus with tri-state buffers for device arbitration, three 4-bit registers (Register A, Register B, and an Output Register) implemented with 74LS175 quad D flip-flops, and a 4-bit ALU for addition/subtraction using a 74LS83 adder and XOR gates. Manual control signals (load, …
Published in Journal of Electronic Design Technology · Vol. 17, Issue 2, 2026 · pp. 30–42 Read article
-
Performance Evaluation of Petrol-Ethanol Blends and Testing on Multicylinder 4-Stroke SI Engine
Abstract: The usage of different alcohols as a fuel for spark ignition (SI) engines has been in progress since the invention of engine, with ethanol being renewable, bio-based and ecofriendly is the best replacement for petrol as fuel in SI engines. Ethanol is derived basically from sugarcane, cassava, corn and other waste biomass materials. The choice of ethanol as a fuel is due to the positive influence on engine performance due …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 6, Issue 1, 2015 · pp. 41–45 Read article
-
Comprehensive Analysis and Investigation of Heat Treated AISI 4130 Steel on Surface Roughness in Turning Operation
Abstract: Now a days Heat treatment is one of the most important operations which alters the properties of the material such as hardness, strength, toughness, ductility, corrosion resistance, etc., and these are used according to the required material properties. These treatments are involving heating and cooling a specimen normally to extreme temperatures. These major processes are annealing, normalizing, hardening, case hardening, etc. In every process, the properties vary accordingly. Turning is …
Published in Journal of Experimental & Applied Mechanics · Vol. 13, Issue 3, 2022 · pp. 28–38 Read article
-
Design of Dielectric Resonator Antenna (DRA) for 4G LTE Applications
Abstract: AbstractIn this paper, a rectangular Dielectric resonator antenna (RDRA) is presented for 4G long-term evolution (LTE) applications. A metallic stripline feed is used to excite the antenna. A metallic strip line is used to increase the electric length of the port. Rectangular DRA is designed using FR4 substrate material having dielectric constant 4.4 and design is simulated with the help of high-frequency structure simulator (HFSS). Design antenna structure covered the …
Published in Journal of Microwave Engineering and Technologies · Vol. 5, Issue 2, 2018 · pp. 22–27 Read article
-
Effect of Soya bean Intervention on Lipid Profile of 40–60 Year Female Undergoing Coronary Intervention
Abstract: Diet and life style choices are major factors contributing to the risk of CAD which is responsible for more deaths in the whole world. It is well known that the modification on lipid concentration is a useful approach to decrease CAD mortality. Soybean contains lean vegetable protein, fibre and bioactive substance—Isoflavone. So it has got attention as cardio protective substance. Isoflavones may have lipid independent coronary benefits, such as enhancing …
Published in Research and Reviews: A Journal of Health Professions · Vol. 8, Issue 3, 2018 · pp. 80s–86s Read article
-
Prenatal estimation of the birth weight above 4,000 g (fetal macrosomia) using fetal abdominal circumference(AC)
Abstract: Purpose: This study is to determine if the birth weight above 4,000g can be correctly estimated by prenatal ultrasonographic measurements of abdominal circumference.Background: The delivery of macrosomatic fetus can increase the perinatal morbidity and mortality of both parturients and fetuses/neonates; the risk for shoulder dystocia, fetal asphyxia and birth trauma as well as vacuum or forceps delivery, hysterotomy and postpartum bleeding due to uterine atony. Thus, the accurate estimation of …
Published in Research and Reviews: A Journal of Medicine · Vol. 12, Issue 3, 2022 · pp. 27–33 Read article
-
Revolutionizing Form and Function: Exploring 4D Printing as a Novel Manufacturing Approach for Complex Generative Structures and Customized Formworks
Abstract: This research delves into the transformative potential of 4D printing manufacturing technology, focusing on its innovative application in fabricating intricate generative and computational structures for adaptable formwork in both individualized and mass-customized scenarios. Spanning the interdisciplinary realms of digital design, digital fabrication, and material science, the study comprehensively explores the integration of these diverse fields. Utilizing generative algorithms and parametric design tools, the research employs simulations to realize complex patterns …
Published in International Journal of Manufacturing and Production Engineering · Vol. 1, Issue 2, 2023 · pp. 41–50 Read article
-
Synthesis, Characterization, and Reactivity of Bivalent Tin(II) with 4-Tert-butylphenol
Abstract: Bivalent tin(II)-4-tert. butylphenoxide of composition Sn(OC6H4X-4)2(I), where X = But, has been synthesized by the reaction of stannous chloride (SnCl2) with bimolar amounts of 4-tert. butyl phenol (HOC6H4But-4) in the presence of the base, diethyl amine, in tetrahydrofuran (THF) solvent. The resulting complex was characterized by elemental analysis, molecular weight determination, molar conductance measurement, IR, and 1H NMR spectral studies. The reactivity of the newly synthesized complex (I) with HgCl2 …
Published in International Journal of Photochemistry and Photochemical Research · Vol. 2, Issue 1, 2024 · pp. 14–19 Read article
-
Industry 4.0 and Smart Supply Chains: Transforming Supply Chain Processes for Enhanced Efficiency and Sustainability
Abstract: The fourth industrial revolution, or Industry 4.0, is an important transformation in how industries function via the use of cutting-edge digital technology. Supply chain management is being substantially altered by integrating technologies like blockchain, big data, automated processes, artificial intelligence, and the internet of things into typical operations of the supply chain. With the help of these technologies, corporations can design intelligent supply chains that are more effective, flexible, and …
Published in International Journal of Industrial and Product Design Engineering · Vol. 3, Issue 1, 2025 · pp. 36–41 Read article
-
Smart Manufacturing with Advanced Polymer Composites: Enabling Industry 4.0 Readiness in Indian MSMEs
Abstract: Thanks to Industry 4.0, manufacturing is now undergoing major changes that highlight using technology, machines, and sustainable solutions. Yet, very few Indian MSMEs can use these technologies due to obstacles like a lack of resources and outdated systems. This research looks at how combining Smart Manufacturing with Advanced Polymer Composites can improve Indian MSMEs’ preparations for Industry 4.0. When APCs are combined with cyber-physical systems, IoT, machine learning, and additive …
Published in Journal of Polymer & Composites · Vol. 13, Issue 4, 2025 · pp. 194–216 Read article
-
Novel Poly (Methyl Cellulose-G-Acrylamide)/Sodium Alginate Based Zeolite 4A Filled Mixed Matrix Membranes for The Separation of Water-Isopropyl Alcohol Mixtures by Pervaporation
Abstract: The Filled blend matrix membranes of (Methyl Cellulose-g-Acryl amide)/Sodium Alginate {(MC-g-AAm)/NaAlg} prepared via solution casting method by in situ incorporation with 4A zeolite particles in 5, 10 and 15 mass % with respect to the weight of (MC-g-AAm)/NaAlg membrane. Several analytical tools such as scanning electron microscope (SEM), atomic force microscope (AFM), Fourier transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and thermo-gravimetric analysis (TGA) were …
Published in Journal of Polymer & Composites · Vol. 13, Issue 4, 2025 · pp. 131–152 Read article
-
Design and Simulation of Full Adder-Based CMOS 4-2 Compressor using CMOS XOR-XNOR Logic
Abstract: This study utilizes the recent development of CMOS transistors to construct an energy-efficient Full adder-based CMOS 4-2 compressor. The CMOS Exclusive-OR-Exclusive-NOR component and multiplexer used in the transmission logic of the novel CMOS compressor include eight transistors. The XOR-XNOR logic style is the most efficient and effective due to its speed and reduced power consumption. Utilizing an operational supply voltage of 0.7 V and 90nm CMOS technology, the Cadence Virtuoso …
Published in Recent Trends in Electronics Communication Systems · Vol. 12, Issue 3, 2025 · pp. 1–8 Read article
-
Strategic Opportunities in Implementing Industry 4.0 for Natural Fiber- Reinforced Polymer Composites
Abstract: Cyber-physical systems (CPS) lie at the heart of the fourth industrial revolution, more widely recognized as Industry 4.0. This emerging paradigm is characterised by the seamless and instantaneous integration of physical and digital systems, creating an interconnected environment where machines, data, and human intelligence work in close collaboration. The proposition behind Industry 4.0 suggests that the fusion of advanced digital technologies with traditional industrial processes will fundamentally transform the nature …
Published in Journal of Polymer & Composites · Vol. 13, Issue 6, 2025 · pp. 451–466 Read article