Journal of Engineering Research and Sciences最新文献_第3页

Applied Salt Technique to Secure Steganographic Algorithm 应用盐技术安全隐写算法

Journal of Engineering Research and Sciences Pub Date : 2023-02-01 DOI: 10.55708/js0202002

B. Oo

引用次数: 0

COVID-19 Pandemic and Mental Well-Being: A Study Conducted on Medical Students and Their Parents in a Private Medical College in Pakistan 新冠肺炎大流行与心理健康——对巴基斯坦一所私立医学院医学生及其家长的研究

Journal of Engineering Research and Sciences Pub Date : 2023-02-01 DOI: 10.55708/js0202001

Mishaim Khan, Mufliha Ibrahim, M. Shabbir, Muhammad Huzaifa Tofique, Muhammad Naheel Khalili, Muhammad Asad, Muhammad Ahmed, M. Haroon, Saima Zainab

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Graph-based Tool for Bandwidth Estimation, Health Monitoring and Update Planning in Broadband Networks 基于图形的宽带网络带宽估计、健康监测和更新规划工具

Journal of Engineering Research and Sciences Pub Date : 2023-02-01 DOI: 10.55708/js0204001

G. P. Jesi, A. Odorizzi, Gianluca Mazzin

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Blockchain Tokens for Agri-Food Supply Chain 农业食品供应链的区块链代币

Journal of Engineering Research and Sciences Pub Date : 2023-02-01 DOI: 10.55708/js0202003

Ricardo Borges dos Santos, R. P. Pantoni, N. Torrisi

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A Survey into Challenges and the Need for Heating Element Technology in Root Canal Procedures 根管治疗中加热元件技术的挑战与需求

Journal of Engineering Research and Sciences Pub Date : 2022-12-01 DOI: 10.55708/js0112003

S. Pachpore, Pradeep Jadhav

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Stakeholder’s Perception of Critical Success Factors for Design-Bid-Build Highway Projects in Nigeria 利益相关者对尼日利亚公路项目设计-投标-建造关键成功因素的看法

Journal of Engineering Research and Sciences Pub Date : 2022-12-01 DOI: 10.55708/js0112005

Fabi Jonathan Kehinde, Akinseinde Olubola Atanda

{"title":"Stakeholder’s Perception of Critical Success Factors for Design-Bid-Build Highway Projects in Nigeria","authors":"Fabi Jonathan Kehinde, Akinseinde Olubola Atanda","doi":"10.55708/js0112005","DOIUrl":"https://doi.org/10.55708/js0112005","url":null,"abstract":": Project success factors are germane in achieving project objectives by stakeholders. The research investigates the stakeholder’s perception of project success factors for highway project in Nigeria. Therefore, the specific objectives is to identify and assess factor influencing the success of highway project in Nigeria. To achieve the main objective of this paper, two hundred (200) questionnaires were administered on major stakeholders in the highway sector; comprising highway engineers both in consultancy firms and client organisations, and quantity surveyors using random sampling technique. Ninety-four (94) questionnaires were found useful for the analysis, yielding a response rate of 47%. Statistical Package for Social Sciences (IBM SPSS Version 22) was used in analysing the data. The results indicated that clear project goals (4.68), experienced design team (4.59), proper project planning (4.51), availability and adequacy of resources (4.50) and on time decision making (4.48) in that order are the most CSFs in highway projects in Nigeria. However, a Kruskal-Wallis test conducted showed that there is no statistically significant difference in the ranking scores among the three (3) stakeholders at 5% significance level, except for four out of the twenty two factors assessed. The group means vary slightly from the individual means obtained from different stakeholders but there is no significant difference in the means. The slight variation is due to the difference in opinions of the stakeholders as each group has priority for different project objectives. The paper concluded that these CSFs need to be given serious attention if the issues of cost and time overrun, project abandonment and litigation have to be a thing of the past in the Nigerian construction industry.","PeriodicalId":156864,"journal":{"name":"Journal of Engineering Research and Sciences","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131142134","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

Linking Consumer Innovativeness to the Cryptocurrency Intention: Moderating Effect of the LOHAS (Lifestyle of Health and Sustainability) Lifestyle 将消费者创新与加密货币意图联系起来:LOHAS(健康和可持续发展的生活方式)生活方式的调节作用

Journal of Engineering Research and Sciences Pub Date : 2022-12-01 DOI: 10.55708/js0112001

Sooyeon Choi, R. Feinberg

引用次数: 0

Design Consideration for IGBT-Based PWM Inverter-Fed Induction Motors 基于igbt的PWM逆变式异步电动机的设计考虑

Journal of Engineering Research and Sciences Pub Date : 2022-12-01 DOI: 10.55708/js0112004

J. Ogunyemi, Olawale Ezekiel Fagbuaro, Henry. S. Okeke

{"title":"Design Consideration for IGBT-Based PWM Inverter-Fed Induction Motors","authors":"J. Ogunyemi, Olawale Ezekiel Fagbuaro, Henry. S. Okeke","doi":"10.55708/js0112004","DOIUrl":"https://doi.org/10.55708/js0112004","url":null,"abstract":": Pulse width modulated (PWM) inverter has applications in many areas as it offers control of voltage, frequency, and harmonic in one power stage. In the practical design of three-phase inverter circuits, a proper understanding of the operations and peculiarities of the specific model to be built is necessary. Most often, perhaps due to different models and configurations; these details are often omitted or assumed to be obvious. An IGBT-based PWM inverter for a 0.5hp induction motor was designed and implemented. Though the implementation posed a challenge to realize, the experience obtained during the process informed the design consideration presented in this paper. The power supply requirements, gate drive requirements, driver protection and dv/dt protections are necessary considerations for successful implementation. This paper presents detailed specific requirements when designing a PWM inverter with IGBT as a driver for induction motor application. The focus is on the theoretical analysis and important design considerations during the practical implementation of an inverter. Different stages involved are analyzed and discussed from the input stage to the output load section. The model used involved single-phase ac input which is rectified to dc. At the output of the rectifier is a large filter capacitor to maintain a constant dc link voltage. The insulated gate bipolar transistor was used as a switching device to drive the 0.5hp induction motor. The analysis simplified inverter design, especially for beginners.","PeriodicalId":156864,"journal":{"name":"Journal of Engineering Research and Sciences","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124326057","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

https://www.jenrs.com/v01/i12/p002/ https://www.jenrs.com/v01/i12/p002/

Journal of Engineering Research and Sciences Pub Date : 2022-12-01 DOI: 10.55708/js0112002

I. Enesi, A. Kuqi

引用次数: 0

Assessment of Village-wise Soil Nutrients and their Effect on Sugarcane Productivity in Western Maharashtra, India 印度马哈拉施特拉邦西部村庄土壤养分评价及其对甘蔗生产力的影响

Journal of Engineering Research and Sciences Pub Date : 2022-10-01 DOI: 10.55708/js0110004

Chhaya Narvekar, M. Rao

引用次数: 0