Engineering and Technology Journal最新文献

{"title":"COVID-19 IMPACT ON BOARD EXAMS FOR THE DEPARTMENT OF ELECTRONICS ENGINEERING AT DON HONORIO VENTURA STATE UNIVERSITY","authors":"Ohlan Jefferson T. Fernando, Rick Donald S. Manzon, Lester O. Natividad","doi":"10.47191/etj/v9i01.13","DOIUrl":"https://doi.org/10.47191/etj/v9i01.13","url":null,"abstract":"The COVID-19 pandemic altered the education landscape, leading to a temporary shift to remote learning for many programs. This study seeks to address a specific question: How did the COVID-19 pandemic and the transition to virtual learning impact the ECE Licensure Examination Passing Rate at Don Honorio Ventura State University's ECE Department? Data spanning from April 2019 to April 2023, obtained from the Professional Regulation Commission's website, was analyzed. A chi-square test was employed to ascertain if a significant difference exists between the licensure examination results before and after the pandemic. The findings, indicating a rejection of the null hypothesis (φ^2=0.5877 and p-value=0.433), lead to the acceptance of the alternative hypothesis. It is concluded that the COVID-19 pandemic and the shift to online learning directly influenced the performance of ECE students in the ECE Licensure Examination.","PeriodicalId":11630,"journal":{"name":"Engineering and Technology Journal","volume":"54 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140492682","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}

{"title":"Influence of oil palm mesocarp fiber on physical properties of fabricated plaster of paris ceilings","authors":"A. Anonaba, Francis Eze, Israel Ndukwe","doi":"10.30684/etj.2024.145008.1651","DOIUrl":"https://doi.org/10.30684/etj.2024.145008.1651","url":null,"abstract":"This study was designed to investigate how some important physical properties of Plaster of Paris (POP) ceilings are affected by the utilization of untreated oil palm mesocarp fiber (UOPMF) and treated oil palm mesocarp fiber (TOPMF) as a modifier. Both fibers were utilized separately at various weight proportions (0, 10, 20, 30, and 40%) to fabricate the ceiling samples. The samples were dried completely and then tested for water absorption, porosity, bulk density, thermal conductivity, specific heat capacity, thermal diffusivity, heat flow time","PeriodicalId":11630,"journal":{"name":"Engineering and Technology Journal","volume":"71 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139593557","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}

{"title":"Drought forecasting model for future climate change effects in a regional catchment area in northern iraq","authors":"Nasser Muhaisen, Thair S. Khayyun, Mustafa Al-Mukhtar","doi":"10.30684/etj.2024.144458.1634","DOIUrl":"https://doi.org/10.30684/etj.2024.144458.1634","url":null,"abstract":"","PeriodicalId":11630,"journal":{"name":"Engineering and Technology Journal","volume":"4 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139524298","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}

{"title":"LOWERING CUSTOMER CLAIM &; NG RATIO ON JACK BRACKET PART USING LEAN SIX SIGMA-DMAIC METHOD AT PT. XYZ","authors":"Putri Kartika, Annisa Marwa, Tri Wahyuningsih, Yudi Prastyo, Tri Ngudi Wiyatno","doi":"10.47191/etj/v9i01.10","DOIUrl":"https://doi.org/10.47191/etj/v9i01.10","url":null,"abstract":"PT. XYZ is a manufacturing company that produces Sub Assembly products for two-wheeled and four-wheeled vehicles. Broadly speaking, the stages of the Jack Bracket production process consist of five processes, namely the sharing stage in the Raw Material Line, the Stamping process in the Small Press Line, the Spot Welding Stage in the Welding Assy Line and the Checking Stage in the Final Inspection Line. This research was conducted at Line Assy Welding where the Line produces Jack Bracket parts and Line Final Inspection. Based on NG Outflow &; NG Ratio data in the period July to December 2023, 57 pcs of spot defects were obtained and the number of internal process defects was 32,325 PPM which is equivalent to sigma level 3.3. After applying the six sigma method, the number of NG Customer Claims is nil (0 pcs) and the level of product defects can be reduced to 7,500 PPM which is equivalent to sigma level 4.","PeriodicalId":11630,"journal":{"name":"Engineering and Technology Journal","volume":"3 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139523942","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}

{"title":"EVALUATION OF THE MEDIUM VOLTAGE CABLE LINE (SKTM) 20 KV USING TAN DELTA AND PARTIAL DISCHARGE METHODS","authors":"R. Diantari, Restu Ahmad Hidayat","doi":"10.47191/etj/v9i01.09","DOIUrl":"https://doi.org/10.47191/etj/v9i01.09","url":null,"abstract":"Distribution network with cable system requires maintenance to maintain the level of reliability. Many factors affect the reliability of this cable system, one of which is environmental factors that can cause deformation of the cable so that it is likely to affect the dielectric condition of the cable. Therefore, to determine and ensure the reliability of the cable system so that it can be known whether a cable is reliable or not, a cable condition diagnostic system is needed that can access the existing cable conditions in the field. Tan Delta (Dissipation Factor) and Partial Discharge are tests that can diagnose the condition of cable insulation in the field based of IEEE standard 400.2 and IEEE standard 400.5.","PeriodicalId":11630,"journal":{"name":"Engineering and Technology Journal","volume":"9 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139524515","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}

{"title":"DISPLACEMENT CURRENTS EFFECTS ON EARTH-RETURN PARAMETERS","authors":"E. A. Saafan","doi":"10.47191/etj/v9i01.08","DOIUrl":"https://doi.org/10.47191/etj/v9i01.08","url":null,"abstract":"The article presents the earth's contribution to self and mutual impedances of double-wired aerial lines passing over a homogenous earth (one-layered earth) due to its importance in electromagnetic compatibility problems in electric power systems. In order to clarify the earth contribution of aerial line impedance, the earth-return parameters (resistance and reactance) for numerous types of earth soil were computed from the point of view of takes into account the longitudinal displacement currents using Wise modification of Carson integration. The most popular earth soil types in our region that takes into consideration in this research are clay, loamy, and sandy soils. In all cases under study, the effect of displacement currents is classified by using the ratio of displacement current density to resistive current density (denoted by k-ratio) that depends on the electromagnetic properties of each earth soil type. Hence, the behaviors of the earth-return parameters for each type of earth soil are mainly explained according to the k-ratio. This research displays how the calculated values of earth-return parameters were affected when the displacement currents were taken into consideration. As a result, the relative differences of these calculated values that got using Wise and Carson calculation methods become noticeable when the k-ratio is greater than 0.1 for all cases under study.","PeriodicalId":11630,"journal":{"name":"Engineering and Technology Journal","volume":"112 30","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139615453","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}

{"title":"THE RARE EARTH ELEMENTS: AN IN-DEPTH EXPLORATION OF INDUSTRIAL UTILIZATION, RECYCLING POTENTIAL AND ENVIRONMENTAL RAMIFICATIONS","authors":"Joseph Owolabi, Emeje Kizito","doi":"10.47191/etj/v9i01.07","DOIUrl":"https://doi.org/10.47191/etj/v9i01.07","url":null,"abstract":"This comprehensive study delves into the extensive spectrum of applications attributed to rare earth elements (REEs), their potential for effective recycling, and the intricate environmental considerations entwined with their extraction and utilization. The realm of rare earth elements is undergoing rapid transformations fueled by technological progress and the escalating demand for these essential components. The spectrum of REEs encompasses the lanthanide series elements, namely La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, as well as Sc and Y. These metals currently hold utmost significance across a multitude of contemporary technologies, spanning from smartphones, televisions, LED light bulbs, to wind turbines. This paper concisely outlines the environmental perils encompassing human health that stem from REE mining practices and the large-scale disposal of electronic waste containing noteworthy concentrations of REEs. Within these pages, we encapsulate novel strategies aimed at ensuring the future availability of REEs, including recent advancements in REE extraction from Coal Field Ash and innovative e-waste recycling methodologies. Additionally, we spotlight recent breakthroughs in the domain of individual REE separation techniques, encompassing both metallurgical and recycling operations.","PeriodicalId":11630,"journal":{"name":"Engineering and Technology Journal","volume":" 1013","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139617378","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}

{"title":"DETERMINATION OF FLOW PATTERNS OCCURRING AT THE DOWNSTREAM OF A TILTING FLUME CHANNEL GATE WITH 3 VARIATIONS OF INCLINATION ANGLES.","authors":"Djoni Irianto, Naufal Dhiya Ulhaq","doi":"10.47191/etj/v9i01.06","DOIUrl":"https://doi.org/10.47191/etj/v9i01.06","url":null,"abstract":"Flow that occurs in the tilting flume channel often changes when observed. This phenomenon is closely related to the variation in the channel's bottom angle as it crosses the open channel, resulting from water input supply or water supply from reservoirs pumped by water researchers. The flow of water through the open channel is influenced by the presence of the channel's bottom surface profile and various angles. When a certain discharge is given, visible flow patterns can be observed on the water surface, while the unseen flow above the water surface is referred to as the Energy Gride Line (EGL). If the energy that occurs in the channel is not measured, it may lead to water jumping. The structured water jump can be observed to understand the flow patterns that occur. To avoid undetected flow patterns, hydraulic structures are required, one of which is a water gate with an opening below, commonly known as a Sluice Gate. This water gate is easily operable, either manually or with the availability of excess water supply. Calculating the operational water requirements can be challenging due to the influence of the depth and jumps occurring downstream of the gate. Often, the hydraulic jump's differences tend to overlook these measurements, which can become a hindrance when there is an excess water supply during peak flow conditions. To address this issue, it is necessary to conduct a model test using an instrument known as the Sluice Gate, which generates hydraulic jumps. This area of research needs further exploration in the laboratory. The Sluice Gate model in the equipment is equipped with instruments, various gate openings, and adjustable pressurized water gates with measurable flow rates. To analyze the jump height, flow patterns, and velocity using a flow watch measuring instrument, the researchers conducted tests with three specific gate openings, testing and measuring the depths (Y) at different positions of the channel's bottom slope. The test started with gate openings of 0.5, 0.75, and 1.00, reading the instrument, moving the gate positions from a depth of 2 cm to the highest depth of 5 cm. Graphing the test results of the Sluice Gate apparatus, which is a sliding gate-type apparatus manually operated, the researchers conducted three tests for each gate opening with pumping, recording, and mapping the depth values, jump lengths, and travel times from the instrument on the testing apparatus. The subsequent recommendation of the Sluice Gate test analysis is intended to provide information for water construction planning, indicating that the test results with various slopes under certain conditions have different depth values and jump times (t). Furthermore, the researchers determine the positioning of the model gate, which can be used to determine the water depth (Y) after jumping (cm). This laboratory research involves a channel model. The objective of this study is to publish a journal article presenting the simulation results determining ","PeriodicalId":11630,"journal":{"name":"Engineering and Technology Journal","volume":"1 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139527357","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}

{"title":"Comparison of locally manufactured composite tile adhesive using waste material with imported tile adhesive","authors":"S. Turki, Sarmad Ibrahim, Mohammed Al Maamorib","doi":"10.30684/etj.2023.141789.1593","DOIUrl":"https://doi.org/10.30684/etj.2023.141789.1593","url":null,"abstract":"","PeriodicalId":11630,"journal":{"name":"Engineering and Technology Journal","volume":"52 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139526934","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}

{"title":"COMPUTER AIDED FUZZY CONTROL CHARTS FOR EVALUATING AND ANALYZING VARIABLE DATA","authors":"Reyam Raheem Jabbar, Ahmed Abdulrasool Ahmed Alkhafaji","doi":"10.47191/etj/v9i01.05","DOIUrl":"https://doi.org/10.47191/etj/v9i01.05","url":null,"abstract":"One of the limitations of fuzzy control charts is the complexity of their mathematical relations, and there is no software built to draw and analyze the fuzzy control charts. This research presents a visual presentation of fuzzy control charts for variables ( , , I-MR), using an integrated program built by MATLAB20 to draw and analyze fuzzy control charts, A real case study was conducted of data collected from the Al-Numan factory for a plastic connecter product. The number of attempts to reach the approved control limits was less in the fuzzy charts, as well as the number of deleted samples in the fuzzy charts was less. It was also noted that the process capability indicators decreased after data fuzzing, they were equal to (3.049) and became equal to (3.013) after fuzzing. This is due to the increase in the standard deviation of the process.","PeriodicalId":11630,"journal":{"name":"Engineering and Technology Journal","volume":"9 20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139616507","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}