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ARPN Journal of Engineering and Applied Sciences                              April 2020  |  Vol. 15  No. 7
   
Title: Very short-term load forecasting of peak load time using Fuzzy type-2 and big bang big crunch (BBBC) algorithm
Author (s): Jamaaluddin Jamaaluddin, Imam Robandi, Izza Anshory and Ahmad Fudholi
Abstract:

Very short-term energy forecasting is done on a day before the day of operation. Forecasting of short-term load is done every 30 minutes of forecasting hours. Very short-term load forecasting is carried out continuing forecasting short-term load with daily intervals, load on a given day or weekly load to be more detailed with very short-term load forecasting. This weight forecasting is done to improve operational effectiveness and efficiency. Forecasting short-term loads have been done using artificial intelligence, nowadays artificial intelligence is attempted to predict a very short term load. In this study, investigated the use of the Fuzzy type-2 (FT-2) and big bang big crunch (BBBC) algorithm for the very short-term load forecasting. Results shows that with the use of FT-2-BBBC, it will get a small error because it uses low computation cost and high convergent speed. In addition, FT-2 also optimizes the foot of uncertainty of the Fuzzy type-1. The results are in the use of FT-2-BBBC hence the very short term load forecasting error value of 0.7278%. This suggests that FT-2-BBBC can be used to perform electrical load forecasting and other forecasting.

   

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Title: Comparison between suspended or seabed pipeline installation for inter island fresh water system
Author (s): Tri Suyono, Agustinus Purna Irawan, Wati Asriningsih Pranoto and Ahmad Fudholi
Abstract:

Provision of drinking water in small islands that do not have the potential for fresh water needs to be done with several alternative technology applications. One of the technologies being carried out is by installing underwater drinking water pipes. Taking into account the operational technical factors, at sea depths above 30 meters, several considerations need to be taken into account, given that installing pipes at these depths is difficult to control pipes manually, so additional equipment is needed for the safety of workers who will control the installed pipes, so this problem the best solution must be found. One problem that must be considered is the selection of pipe specifications that must meet technical requirements. Pipeline selection is carried out by conducting a study through the pipeline model and needs to be studied carefully and thoroughly so that the installed pipe is completely safe in the sea and does not suffer damage due to forces acting on the pipe caused by ocean currents, waves and underwater conditions others. The installation model that will be examined is the installation model suspended in the sea and installation on the sea floor. From the results of the analysis conducted on the pipe suspended in the sea with a depth of over 30 meters and the installation of pipes on the seabed shows that the pipe installed in the sea is more stable both from the effects of waves and ocean currents with a smaller depormation value compared to the pipe that is installed Suspended in in the sea. Pipe installed Suspended in the sea with a span of 2,500 meters and given a weight of 65 kg with a distance of 12 meters can experience vertical deflection down to 2,775,326 mm. Pipes placed at the bottom of the sea are more stable because the flow of waves and waves is already small so that the pipes are more stable and do not oscillate. The recommended pipe installation is seabed with pipe specifications in accordance with the conditions of the Hiri Strait, namely HDPE pipes with a nominal pressure of at least 25 bar.

   

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Title: Performance evaluation of the G.729, AMR and iLBC voice codecs on LTE- ADVANCED
Author (s): Jesús D. Quintero P., Martin D. Bravo O. and José J. Salgado P.
Abstract:

This article presents a referential framework given by an exhaustive analysis of the quality of the service concerning the G.729, AMR, and iLBC coding standards on LTE-A (LTE-ADVANCED) technology. The architecture that forms the LTE-A technology, making a particular focus on the characteristics that make up its OFDMA interface (Orthogonal Frequency Division Multiple Access). Simulations of the scenarios are implemented, showing data on the traffic generated by a certain number of users. On the other hand, an algorithm was performed to extract the generated packet by the voice encoders and the transmitting according to the networking traffic information; it offered by the simulator. Finally, the objective and subjective evaluations were realized, and the results of the voice service quality on IP (VoIP) are presented, taking into account the packet loss.

   

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Title: Pressure and pressure derivative interpretation for vertical wells in naturally fractured and compressible formations
Author (s): Guiber Olaya-Marin, Freddy H. Escobar and Faiber Robayo
Abstract:

An improved methodology for well test interpretation homogeneous and naturally fractured and compressible reservoirs with a single fluid is presented. New expression to find the permeability, permeability modulus and geomechanical skin factor from slope during radial flow regime have been introduced and corrections of for the minimum point and the intercept between the unit-slope line taking place during the transition period and the radial flow regime are given so existing equations in the literature can be applied for the determination of the naturally fractured reservoir parameters. These new expressions were successfully applied to synthetic examples.

   

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Title: An innovative kernel function for the NLM filtering
Author (s): Zayed M. Ramadan
Abstract:

The Gaussian and exponential weighting functions have been used for a long time as standard functions in the conventional nonlocal means (NLM) filtering method and its variants. In this paper, a new weighting function is proposed and tested experimentally in the NLM method. This function is a power-of-two function that is used to measure the similarity between pixels in the reference and search patches of the image pixels. Six images of different features and amounts of details are used in the simulations. Those images were subject to zero mean Gaussian noise with various levels of standard deviation. Peak signal to noise ratio (PSNR) and structural similarity (SSIM) have been used as quantitative indices to measure the performance quality of the proposed weighting function compared to that of the exponential and Gaussian functions. The proposed function outperforms the exponential function in all the tested images and for all values of noise standard deviations, and produces similar results and sometimes slightly better than those of the Gaussian weighting function.

   

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Title: Increasing of the heat and mass transfer processes efficiency with the application of non-uniform fluidization
Author (s): Yaroslav M. Kornienko, Serhii S. Haidai, Roman V. Sachok, Andrii M. Liubeka and Bogdan Y. Korniyenko
Abstract:

The use of non-uniform jet-pulsating mode of fluidization allows increasing the intensity of diffusion-controlled processes of mass isothermal crystallization in granulation of liquid heterogeneous systems due to the intensive volumetric mixing of granular material by pulsating removal beyond the initial layer up to 40% of its mass with a frequency of 1.6...1.8 Hz. Efficiency of application of the non-uniform jet-pulsating mode of fluidization is confirmed by the granulation of multi component liquid heterogeneous systems with obtaining humic-potassium-nitrogen-calcium-sulfur-containing fertilizer with micro-impurities of magnesium and phosphorus with chemical composition [Hum.]:[K]:[N]:[Ca]:[S]:[Mg]:[?]=[1.5]:[21.5]:[9.1]:[13.8]:[4.6]:[3.2]:[1.8] with a layered structure, spherical shape with an equivalent diameter in the range daverage=2.2...3.6 mm and a strength P greater than 12 N per granule. In this case the granulation coefficient ? is more than 85%, and the average specific load of bed by moisture is at least 1.5 times higher than this index in the case of homogeneous fluidization.

   

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Title: Lipid panel tests: Design and implementation of an information system for results recording and consulting
Author (s): Albeiro Cortes Cabezas, Cesar A. Perdomo Ch. and Julián Rolando Camargo López.
Abstract:

The main aim of this work was to create a healthcare information system that allows to medical and laboratory staff, authorize, register and consult data about the lipid panel tests made to the patients. This paper presents the design and implementation of an information system for the registration, organization and analysis of lipid panel tests results in the hospitals of the Department of Huila in Colombia according to the standards HL7-FHIR (Health Level 7 - Fast Healthcare Interoperability Resources). A result, an information system was designed and implemented using free software as java, html5, css3, etc. It was concluded that the proposed information system cans reduce the execution time and facilitate the work of the medical staff when lipid panel tests are performed.

   

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Title: Preparation of metal powders from silver melt for 3D printing by melt dispersion method
Author (s): Masanskii Oleg A., Tokmin Alekcandr M., Kazakov Vladimir S., Bezruchko Alekcandr B., Gilmanshina Tatiana R., Lytkina Svetlana I., Kaposko Inga A. and Khudonogov Sergey A.
Abstract:

The development and introduction of additive technologies in modern industry is due to the need of production in reducing waste, reducing the anthropogenic load on the environment and improving the environmental friendliness of production, reducing labor costs and improving technical and economic indicators, automation of the technological process in obtaining products for various purposes. The increase in the number of technological solutions that allow 3D printing is due to the mass interest in this issue, the availability of modern technologies and materials that make it possible to design, test and use printers in experimental and production conditions. The purpose of this work is to develop technological parameters for obtaining metal powder from silver melt for 3D technology by dispersion method. In the course of the work it was found that the formation of particles is significantly influenced by the breaking angles of the silver melt with high-pressure water. Studies have shown that to obtain particles whose shape is close to spherical, with a diameter of 45–500 microns, it is effective to use the splitting angles a=45°, b=42°. Upon receipt of the powder with the corners split a=30°, b=45° ? a=b=45° are formed irregular particles on the surface and discovered oxygen in the amount of 1.16 is 7.80 %.

   

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Title: Control system for obtaining water from air dehumidification by Peltier cells
Author (s): Faiber Robayo Betancourt, Jesús D. Quintero-Polanco and Ferley Medina Rojas
Abstract:

In this article the implementation of a dehumidification system based on Peltier cells that allows water particles condensation from the air is presented. A PI (Proportional Integral) control design leads the temperature from the cold cell face toward the dew point to improve the system performance. The system performance is evaluated comparing the system operation without control with the controlled system, in order to set the improvements that allows increase water production and reduce the electric power consumption. These tests indicate that when applying control, the water production increases, while power consumption is reduced, evidencing a remarkable improvement in system efficiency.

   

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Title: The experimental studies of the automatic control methods of magnetic separators performance by magnetic product
Author (s): Jamil Abedalrahim Jamil Alsayaydeh, Win Adiyansyah Indra, Adam Wong Yoon Khang, A. K. M. Zakir Hossain, Vadym Shkarupylo and J. Pusppanathan
Abstract:

The objective of this article is to experimentally test for the automatic control of the magnetic separator efficiency of the magnetic product. The developed process depends on the fact that the electromotive force in electric coil located on the pole of the magnetic system of the separation depends on its efficiency with the magnetic product. A functional scheme of the measurement process is given to achieve a magnetic separator by the magnetic product. The theoretical formulas that describe the formation of a pulsed magnetic field in a magnetic separation zone are presented and the magnetic induction of this field is based on the physical variables that characterize the operating system of the damp magnetic drum class. The theoretical reliance of the magnetic induction of the magnetic field in the working zone on the amount of magnetite in the concentrate layer on the surface of the separator drum is determined. The methodology and functional scheme for conducting experimental studies in an industrial environment of an iron ore-dressing factory of the proposed automatic control method is given. The method includes conducting a passive experiment, including the selection of technological samples and their analysis with simultaneous recording of voltmeter readings, which measure the voltage at the output of the electric coil located on the pole piece of the magnetic system of the separator. Mathematical treatment of the results of experimental studies was performed through regression analysis method. The regression equation that connects the size of the electric driving force is obtained in the coil and the magnetic separator performance of the magnetic product is performed. It is concluded that the magnetic separator performance of the magnetic product is sufficiently accurate. The results obtained allow us to develop a system for automatically controlling the performance of a magnetic separator.

   

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Title: Investigating the non-linear behavior of RC framed structures with semi-rigid joints under vertical and lateral load excitation
Author (s): Khair Al-Deen Bsisu and Ibrahim Altarabsheh
Abstract:

This study aims at investigating the nonlinear behavior of adequate reinforced concrete frames with semi-rigid connections under high lateral load and comparing them to the moment resisting systems. These two systems were compared based on their energy dissipation capacity, inter-storey drift ratio, force distribution, ductility, failure mechanism, and self-centering capacity. Also, this study aims at evaluating important parameters for the Reinforced concrete building with semi rigid connections such as over-strength factor, ductility, and response modification factor and compare them with that of moment resisting system. A complete three-dimensional finite element model for the RC connections is developed using ANSYS finite element software to determine the moment rotation curve for the connections based on their size, concrete strength and reinforcement details. SAP2000 finite element analysis model is performed to investigate the impact of semi rigid connections on the nonlinear behavior of RC buildings. The seismic force and displacement demand on the proposed system are determined using nonlinear time history analysis. Moreover, the maximum displacement that the building can withstand is determined using pushover analysis. The study concluded that considering RC beam-column joint as a rigid connection, will significantly overestimate the stiffness of RC buildings and will give erroneous structural responses under earthquake loading.

   

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Title: Onboard obstacle sensing mechanism for Drones using Monocular camera
Author (s): Aswini N. and Uma S. V.

Abstract:

Unmanned Aerial Vehicles (UAV) commonly known as Drones, have become so popular in recent years because of their enormous technical development and demand in both the Military and Civil sectors. “No risk of human life" is the biggest advantage of drones. To become completely autonomous, there is a need for an Onboard Obstacle Sensing Mechanism (OOSM) to detect and avoid a collision. Most of the drones used now in the market have inbuilt cameras that can perform video recording. These videos are sent to the ground control station and are processed using suitable obstacle detection algorithms. The necessary commands are sent back to the drones for further manoeuvres. In a real-time application, obstacle detection becomes difficult when there is a need to process videos from a Monocular camera. By this work, an attempt is made to detect frontal obstacles using computer vision techniques, measure their distance from the monocular camera using a mathematical approach. The direction from which the obstacles are approaching is also estimated by calculating the centroid of each image frame.

   

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