2022 Muthanna International Conference on Engineering Science and Technology (MICEST)最新文献_第4页

Effects of Ignition Timing and Compression Ratio on Performance of GDI Engines 点火正时和压缩比对直喷发动机性能的影响

2022 Muthanna International Conference on Engineering Science and Technology (MICEST) Pub Date : 2022-03-16 DOI: 10.1109/micest54286.2022.9790238

M. Aldhaidhawi, Oras Khudhayer Obayes, Mina M. Aljuboury

{"title":"Effects of Ignition Timing and Compression Ratio on Performance of GDI Engines","authors":"M. Aldhaidhawi, Oras Khudhayer Obayes, Mina M. Aljuboury","doi":"10.1109/micest54286.2022.9790238","DOIUrl":"https://doi.org/10.1109/micest54286.2022.9790238","url":null,"abstract":"The influence of different ignition timings and compression ratios on the combustion characteristics and performance of a gasoline direct injection GDI engine operating on gasoline and liquefied petroleum gas (LPG) fuels at a constant speed of 3000 rpm were numerically investigated. For this reason, a model was created and developed using the AVL Boost program (fully integrated IC engine simulation software). The results of this study showed that the effective power and effective torque were decreased for engines fueled with LPG compared to those of gasoline for all selected ignition timings. Also, brake specific fuel consumption was higher for LPG fuel than for gasoline fuel, but brake mean effective pressure, maximum cylinder pressure, and maximum cylinder temperature were higher for gasoline fuel than for LPG fuel. Increasing the compression ratios resulted in an increase in the effective power, effective torque, brake mean effective pressure, peak cylinder pressure, and peak cylinder temperature, but it also resulted in a decrease in the specific fuel consumption for both fuels.","PeriodicalId":222003,"journal":{"name":"2022 Muthanna International Conference on Engineering Science and Technology (MICEST)","volume":"3 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132815016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Real-Time Resource Monitoring Framework in a Heterogeneous Kubernetes Cluster 异构Kubernetes集群中的实时资源监控框架

2022 Muthanna International Conference on Engineering Science and Technology (MICEST) Pub Date : 2022-03-16 DOI: 10.1109/MICEST54286.2022.9790264

Balqees Talal Hasan, D. Abdullah

引用次数: 0

Sustainability of Commercial Streets Evaluation of Selected Streets in Al-Kut City Al-Kut市商业街可持续性评价

2022 Muthanna International Conference on Engineering Science and Technology (MICEST) Pub Date : 2022-03-16 DOI: 10.1109/micest54286.2022.9790177

I. Jasim, H. Hasan, S. Farhan, H. Ebadi

引用次数: 1

Temperature dependent electrical properties for planar Pentacene Schottky diode 平面并五烯肖特基二极管的温度相关电学特性

2022 Muthanna International Conference on Engineering Science and Technology (MICEST) Pub Date : 2022-03-16 DOI: 10.1109/micest54286.2022.9790142

K. A. Hussain, Ghusoon M. Ali, A. Boubaker

引用次数: 1

A Comprehensive Survey of Fiber Impairment Mitigation Technologies in High Capacity Systems 大容量系统中光纤损伤缓解技术综述

2022 Muthanna International Conference on Engineering Science and Technology (MICEST) Pub Date : 2022-03-16 DOI: 10.1109/micest54286.2022.9790218

Ali Hayder Abdul Kareem, I. Murdas

{"title":"A Comprehensive Survey of Fiber Impairment Mitigation Technologies in High Capacity Systems","authors":"Ali Hayder Abdul Kareem, I. Murdas","doi":"10.1109/micest54286.2022.9790218","DOIUrl":"https://doi.org/10.1109/micest54286.2022.9790218","url":null,"abstract":"The demand for network capacity has been steadily increasing in recent decades due to the growth of new digital applications and services. Optical fiber supports to solve and avoid data traffic bottlenecks when dealing with high capacity data rate requirements. When fiber is used as a propagation medium, fiber dispersion and nonlinear distortions effects appear. Dispersion in optical fiber is a linear effect that may be compensated by a dispersion compensating fiber. In contrast, the nonlinearity effect is one of the most unfavorable aspects of modern communication systems causing intermodulation distortion, adjacent channel interference, phase distortion, and harmonic distortion. In the majority of communication systems, the primary fiber nonlinear effect is the Kerr nonlinearity caused by the refractive index dependency on signal intensity. The purpose of this paper is to summarize a survey of fiber nonlinearity compensation techniques to minimize the effect of nonlinear distortion that improve the performance of optical communication network. The conclusions showed that there are two types of compensation, digital and optical. Optical compensation has better advantages than digital compensation in terms of efficient improving system performance and increasing data rate against nonlinear effects, especially for advanced systems with high capacity.","PeriodicalId":222003,"journal":{"name":"2022 Muthanna International Conference on Engineering Science and Technology (MICEST)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127932401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Virtual Performance Evaluation of Net-Zero Energy Building (NZEB) Using BIM Analysis 基于BIM分析的净零能耗建筑虚拟性能评价

2022 Muthanna International Conference on Engineering Science and Technology (MICEST) Pub Date : 2022-03-16 DOI: 10.1109/micest54286.2022.9790153

T. Mutaz, A. Jadallah, Ghassan A. Bilal, Omayma M. Abdulmajeed

引用次数: 0

Effect of Transceiver Impairments on the Capacity of Correlated MIMO Channel in LTE Systems LTE系统中收发器损伤对相关MIMO信道容量的影响

2022 Muthanna International Conference on Engineering Science and Technology (MICEST) Pub Date : 2022-03-16 DOI: 10.1109/micest54286.2022.9790249

Mohammed Auday Abdullah, W. Al-Masoody

{"title":"Effect of Transceiver Impairments on the Capacity of Correlated MIMO Channel in LTE Systems","authors":"Mohammed Auday Abdullah, W. Al-Masoody","doi":"10.1109/micest54286.2022.9790249","DOIUrl":"https://doi.org/10.1109/micest54286.2022.9790249","url":null,"abstract":"In this paper, the effect of transceiver impairment on the capacity of the MIMO system is studied. Different from the conventional knowledge that the correlation among antenna elements degrade the system performance, this paper proposes an algorithm that simulates the capacity of the correlated MIMO channel that suffers from Rayleigh flat fading with the presence of a physical transmitter and physical receiver. We also assume that the channel state information at the receiver (CSIR) is available. Also, this work will be devoted to long-term evolution systems (LTE). The simulation process of the proposed algorithm is manipulated by MATLAB software with 10000 realizations of the channel. Each realization of the channel is generated randomly. The transceiver impairment levels (k) used in the simulation are 0.08 and 0.175. The simulation results of the proposed algorithm showed that the capacity of the correlated MIMO channel with the presence of a physical transmitter and physical receiver is stopped growing at a particular value in the high SNR regime, which is called the capacity limit. Also, the results showed that the correlation coefficient has an influential role in determining the value of the capacity limit. These results contradicted the results of the traditional MIMO system, in which the traditional MIMO channel capacity grows infinitely at the high-SNRs regime.","PeriodicalId":222003,"journal":{"name":"2022 Muthanna International Conference on Engineering Science and Technology (MICEST)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114827800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nonlinear Investigation of Behavior of Mechanically Stabilized Earth Retaining Wall Using FEM 机械稳定挡土墙非线性性能有限元研究

2022 Muthanna International Conference on Engineering Science and Technology (MICEST) Pub Date : 2022-03-16 DOI: 10.1109/micest54286.2022.9790097

B. Abbas, H. M. A. Khuzaie, H. Y. Aziz

{"title":"Nonlinear Investigation of Behavior of Mechanically Stabilized Earth Retaining Wall Using FEM","authors":"B. Abbas, H. M. A. Khuzaie, H. Y. Aziz","doi":"10.1109/micest54286.2022.9790097","DOIUrl":"https://doi.org/10.1109/micest54286.2022.9790097","url":null,"abstract":"Numerical models utilizing the finite element technique through Plaxis program package were conducted in this study to investigate the behavior of a concrete retaining wall in sand soil. The proposed numerical model intended to predict the behavior of retaining wall under many factors. A parametric study is focus on the effect of various parameters on the behavior of concrete retaining walls. These parameters included the wall height, geogrid reinforcement, embedment ratio of geogrid and surcharge loads on top of backfilling. Three different heights were tested D (4, 6, 8) m and four values of surcharge were tried (100, 200, 300, 400) kN/m2. The geogrid layer was furnished in three locations according to the height of the wall h/D (0.25, 0.5, 0.75) to investigate the embedment ratio on the retaining wall. It was found that increasing the wall height leads to increase the active pressure of soil and the stem of wall will tilt away from the backfill. The foundation of the wall was rotated counterclockwise when the height of wall increased from 4 to 8 m. The location of external load is effective in increasing the value of displacement and these values are reduced when the distance of load moved away from wall stem. The presence of geogrids reduces both vertical and horizontal displacements. The geogrids change the direction of horizontal displacement at bottom of the stem and the movement changed from negative to positive direction due to redistribution of active pressure on the wall due to geogrid effect.","PeriodicalId":222003,"journal":{"name":"2022 Muthanna International Conference on Engineering Science and Technology (MICEST)","volume":"240 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131828507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of Bandpass Filter for 5G Applications with High-selectivity and Wide Band Rejection 高选择性宽带抑制5G应用带通滤波器设计

2022 Muthanna International Conference on Engineering Science and Technology (MICEST) Pub Date : 2022-03-16 DOI: 10.1109/micest54286.2022.9790185

Ameer Basheer, Hussein A. Abdulhussein, H. Al-Saedi, Jawad K. Ali

引用次数: 1

Surface Disinfection Using a Mobile Robot 使用移动机器人进行表面消毒

2022 Muthanna International Conference on Engineering Science and Technology (MICEST) Pub Date : 2022-03-16 DOI: 10.1109/micest54286.2022.9790239

M. Abbood, Waqass Khudhir, Jalil Shukur, Halah Ali Habeeb

引用次数: 0