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1049 articles for “Multiplication”
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A Study of a Non-Isolated DC-DC Converter Based on High Voltage Gain
Abstract: This article implements a best non-isolated DC-DCConverter for solar photovoltaic system-driven DC MicroGridapplications through high voltage gain methodology. At first, ahybrid boosting converter with bipolar voltage multiplier method isproposed and studied for photovoltaic-based DC MicroGrids. Butthe cost and functionality of this converter are a big problem. Toeradicate these problems with a proposed modified SEPICconverter and this converter is studied for producing high voltagegain. Formerly performance of hybrid boosting converter andmodified …
Published in Journal of Power Electronics and Power Systems · Vol. 13, Issue 3, 2023 · pp. 17–29 Read article
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Productivity of Hydraulically Fractured Calcite Rich Shale Reservoirs Enhanced by Acid
Abstract: The current low oil prices have highlighted the need for enhancement to current production from shale formations. Prolonging the production life and increasing productivity of the fracture network in the shale plays can be a way to improve the economics. Many shale wells, drilled and completed based on current completion strategies, show sharp decline after initial flash production. One of the reasons behind this can be attributed to closure of …
Published in Journal of Petroleum Engineering & Technology · Vol. 6, Issue 1, 2016 · pp. 54–68 Read article
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Breathing prediction of fracture deviated wellbore through flooding mechanism
Abstract: Wellbore breathing is a common occurrence during drilling operations, but the down hole mechanism and how it manifests itself in surface and subsurface processes, is not well understood. It often result in a drilling fluid gain at surface and are misidentified as a kick, resulting in unneeded shut in periods and associated non-productive time (NPT). Further, misidentification of wellbore breathing as underbalance often results in increases in mud weight, which …
Published in Journal of Petroleum Engineering & Technology · Vol. 9, Issue 2, 2019 · pp. 5–13 Read article
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Chlorella lipid oil for biofuel production obtained by a new method of high quality concentration of Chlorella
Abstract: Chlorella concentrates are unique due to the large amount of high-quality lipid oil produced from them, which is a high-quality biofuel. The production of high quality lipid oil requires the production of Chlorella concentrates with low water content (as a foam product). Existing methods of centrifugation or microfiltration for the concentration of chlorella are expensive andineffective. The article presents a new developed method for obtaining high-quality lipid oil, in which …
Published in Journal of Petroleum Engineering & Technology · Vol. 12, Issue 2, 2022 · pp. 10–14 Read article
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Parallel Conwip for a High-mix Multi-stage Production System with the entrance of rework
Abstract: In a complex production environment, more than one type of pull systems is often used to regulate the processesof different products. In literature, performance studies appertaining to multiple pull systems co-existed in aproduction environment are rare. The present paper evaluates the performances of parallel CONWIP (PC)systems in a high-mix production system with the entrance of rework. The production comprises three stages ofshared-machine facilities. Reject parts produced by the first stage …
Published in Journal of Production Research & Management · Vol. 1, Issue 1-2-3, 2011 · pp. 21–44 Read article
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Dynamic Cellular Manufacturing System: A Review
Abstract: Cell-formation procedures ignore any changes in demand over time caused by product redesign and uncertainties due to volume variation, part mix variation and resource unreliability till today. Nowadays for business environment product life cycles are short, demand volumes and product mix can vary frequently, in this context Cellular Manufacturing System (CMS) configuration for a period might not be an optimal or even not to be feasible for the next periods …
Published in Journal of Production Research & Management · Vol. 4, Issue 2, 2014 · pp. 1–11 Read article
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The Role of Micro-Finance Institution to Improve Efficiency of Savings Mobilization in Gedeo Zone SNNPRS, Ethiopia
Abstract: Microfinance saving mobilization can help to gain financial independence, increase profitability and help microfinance institution to reach financial self-sufficiency. The study will seek to identify the factors affecting microfinance saving mobilization at microfinance institutions in Gedeo Zone, SNNPRs, Ethiopia. The study identified variables that can affect microfinance total saving. Nine variables were regressed with the dependent variable. The data for these variables was collected from microfinance institutions, National Bank of …
Published in Journal of Production Research & Management · Vol. 5, Issue 1, 2015 · pp. 27–38 Read article
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Evaluation of Industry 4.0 Adoption Obstacles Through the Use of SMEs
Abstract: Industry 4.0 offers significant technology advancements, but businesses must overcome several obstacles before implementing it. Although a lot of work has gone into identifying the hurdles that most businesses face, the literature currently in publication has not taken the time to examine how these barriers relate to one another or what that means for practitioners. Within the framework of Portugal's manufacturing sector, we employ the interpretative structural modelling (ISM) technique …
Published in Journal of Production Research & Management · Vol. 13, Issue 3, 2023 · pp. 24–38 Read article
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Micro-cantilever Sensors for Efficient Gas Sensing
Abstract: AbstractMicro-cantilever has been progressively used for the development of miniaturized sensors for gas sensing, biochemical analysis, medical applications and quality and process control. Micro-cantilevers are fabricated with rectangular silicon slabs having thickness below 1 µm. For gas sensing applications, Si cantilever surface is modified with appropriate sensing materials for selective adsorption of gas/vapor or biomolecules. The bending of the cantilever due to different surface conditions is measured with laser beam …
Published in Journal of Semiconductor Devices and Circuits · Vol. 6, Issue 3, 2019 · pp. 16–24 Read article
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Complementary Metal Oxide Semiconductor Readout Integrated Circuit for Imaging Applications
Abstract: In this paper presents a novel continuous-time simultaneous-readout scheme for active imaging systems based on orthogonal modulation of photo detector signals. The superimposed-continuous-time approach presented here differs from the conventional scheduled-discrete-time scheme in that the photo detector signals are summed in a common bus concurrently and then converted to voltage levels for digitization. We illustrate that our proposed architecture may be profitable. Predominantly, in solicitations, the bandwidth necessities for a …
Published in Journal of Semiconductor Devices and Circuits · Vol. 2, Issue 2, 2015 · pp. 5–8 Read article
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Reddish-orange Emission in Pr3+-V4+ Doped Ions in Calcium Lead Borosilicate Glasses for Photonics and Sensor Applications
Abstract: CaO-PbO-B2O3-SiO2:Pr2O3-V2O5 synthetic glasses were made using a traditional melt-quench method. In the UV-vis-NIR range, the optical absorption spectra show distinct transitions from different energy levels where simple Pr3+ ions are present. The absorption transition of V4+ ion identity exhibit 2T2g®2E2g (spin-allowed) single transition in the UV-vis region Because of the presence of the paramagnetic VO2+ ion, the EPR spectra showed high intensity hyperfine splitting of two sets of eight lines …
Published in Journal of Semiconductor Devices and Circuits · Vol. 10, Issue 3, 2024 · pp. 33–50 Read article
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Experimental Study on Effectiveness of MTMD in Reducing Structural Response of Multi-story Asymmetric model Under Harmonic Loading.
Abstract: The current trend toward construction of high rise building with the use of lightweight, high strength material and advance construction methods have led to making comparatively light and flexible structures, which have relatively low natural damping. Results make structures more prone to environmental excitation such as earthquake loads. An asymmetry in a building which may arise due to unsymmetrical distribution of stiffness, mass, damping and strength characteristics. The responses of …
Published in Journal of Structural Engineering and Management · Vol. 5, Issue 3, 2018 · pp. 21–28 Read article
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Analysis of Two way Continuous Bridge under Moving Loads
Abstract: The analysis of dynamic behavior of bridge structures that are subjected to moving loads has been one of the research interests in recent years. Specifically in railway bridges, Resonance occurs when the load frequency is equal to a multiple of natural frequency of the structure. Resonance vibrations have been observed in railway bridges especially subjected to High Speed Lines. They are caused mainly because of two reasons one is the …
Published in Journal of Structural Engineering and Management · Vol. 6, Issue 2, 2019 · pp. 7–12 Read article
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Dynamic Analysis of Railway track and SSI effect
Abstract: The analysis of dynamic behavior of bridge structures that are subjected to moving loads has been one of the research interests in recent years. Specifically in railway bridges, Resonance occurs when the load frequency is equal to a multiple of natural frequency of the structure. Resonance vibrations have been observed in railway bridges especially subjected to High Speed Lines. They are caused mainly because of two reasons one is the …
Published in Journal of Structural Engineering and Management · Vol. 6, Issue 1, 2019 · pp. 37–41 Read article
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Economical Design of Stiffened Plate using FEM
Abstract: This paper presents the economical design of stiffened plate subjected to transverse load. The model of stiffened plate is developed using ANSYS APDL 14.0 for the finite element analysis and design. At first, a convergence study is carried out to arrest the optimum mesh size for discretizing the plate. The maximum deflection of plate with and without stiffeners subjected to point and uniformly distributed load for both fixed and simply …
Published in Journal of Structural Engineering and Management · Vol. 4, Issue 2, 2017 · pp. 50–57 Read article
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Study of Structures Considering Second Degree Analysis P-delta and Construction Sequence Analysis
Abstract: Infrastructure plays an important, rathernecessary role in modern society.Real estate amenities surrounding to us give everyone access to multiple aspects of technology which help to carve the frame of mind.Amenities, which once were rare and difficult to avail for everyone, is now available to common civilians.Recently, RCC structures has changed a lot,the symmetrical and identical storeys of premises is now considered as a conventional and to an extent inefficient design.The …
Published in Journal of Structural Engineering and Management · Vol. 8, Issue 1, 2021 · pp. 38–42 Read article
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Evaluation of Equal Settlements of Geosynthetic Reinforced Piled Embankment
Abstract: Geosynthetic-Reinforced Pile-Supported Embankments (GRPSE) have emerged as an effective alternative to traditional geotechnical methods Constructing of piled embankments on soft soils. Design of pile-reinforced embankments and evaluation of plane of equal settlements is critical in the case of soft soils. If the embankment height exceeds the height of the plane of the equal settlements, settlements cannot be seen on the pavement, otherwise, differential settlements may be observed on the pavement. …
Published in Journal of Structural Engineering and Management · Vol. 9, Issue 3, 2022 · pp. 28–33 Read article
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Advanced Materials in Driving Innovation and Advancement in Industry
Abstract: Advanced materials have become increasingly important in driving innovation and advancement across multiple industries. These materials offer unique properties that can improve the performance, durability, and functionality of various products, leading to new opportunities for growth and competitiveness. In this paper, we examine the role of advanced materials in different industries, including aerospace, energy, healthcare, electronics, and transportation. We explore some of the latest developments in materials science and engineering, …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 10, Issue 1, 2023 · pp. 1–5 Read article
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Practical Implementation of Network Switch on FPGA
Abstract: AbstractA network switch is a hardware device, which is used for device communication within a network. It uses a packet-switching mechanism to receive and transmit data to the target device. Network switches contain multiple ports that use media access control (MAC) address for transmitting data at the data link layer (layer 2) of the Open Systems Interconnection (OSI) model. This research aims to design a network switch on FPGA to …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 7, Issue 1, 2020 · pp. 14–19 Read article
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Performance Enhancement of Cognitive Radio Spectrum Sharing (CRSS) with MIMO System
Abstract: A key challenge in operating cognitive radios (CRs) in a self-organizing (ad hoc) network is to adaptively and efficiently allocate transmission powers and spectrum among CRs according to the surrounding environment. Cognitive radio networks will provide high bandwidth to mobile users via heterogeneous wireless architectures and dynamic spectrum access techniques. CR networks inflict challenges due to the fluctuating nature of the available spectrum, as well as the diverse QoS requirements …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 2, Issue 3, 2015 · pp. 13–18 Read article