International Research Journal of Innovations in Engineering and Technology最新文献_第9页

Crack Growth Study in Welded Sheet Metal 焊接薄板裂纹扩展研究

International Research Journal of Innovations in Engineering and Technology Pub Date : 1900-01-01 DOI: 10.47001/irjiet/2021.508009

José L. Ramírez Cruz, H. Rabiela, B. V. González, Gustavo A. Bravo Acosta, P. Segura

引用次数: 0

Numerical Study of High-Order Soliton Generation in Photonic Crystal Fibers: Effect of the Pulse Shape and Its Duration 光子晶体光纤中高阶孤子产生的数值研究:脉冲形状和持续时间的影响

International Research Journal of Innovations in Engineering and Technology Pub Date : 1900-01-01 DOI: 10.47001/irjiet/2022.608010

S. Ali, H. Sultan

引用次数: 0

The Evolution in Design Process with Software Packages A Case Study of Hyderabad and Karachi 软件包在设计过程中的演变——以海德拉巴和卡拉奇为例

International Research Journal of Innovations in Engineering and Technology Pub Date : 1900-01-01 DOI: 10.47001/irjiet/2021.509005

Irum Arisar, Bhai Khan Shar, Sabeen Shah

{"title":"The Evolution in Design Process with Software Packages A Case Study of Hyderabad and Karachi","authors":"Irum Arisar, Bhai Khan Shar, Sabeen Shah","doi":"10.47001/irjiet/2021.509005","DOIUrl":"https://doi.org/10.47001/irjiet/2021.509005","url":null,"abstract":"- Architectural tools play an important part in the solving design issues. The best way to represent a designer's imagination in a concrete reality is by using drawing techniques. With changes occurring in the field of technology and design the use of drawing tools has also evolved and improved. Although digital tools replaced conventional drawing tools that were used in the past, the influx of computer technology in architectural design has had a profound influence on how buildings are planned and constructed. The widespread use of digital technology (IT) transformations at this stage introduced technologies that encourage the development in architectural designs and manufacturing techniques for reasons other than necessity, and their impact on architecture is still widely undefined. Many new software applications for digital models with Building and Modeling Knowledge have launched in recent years been used for model developing and 2D drawings as well. This study aims to analyses the characteristics and nature of design process and how it is evolved from beginning through organic approach till now with the advent of software packages, by doing so it will highlight the comparison of conventional and modern tools and the impact of software tools on architects and design, the advantages of utilizing software tools in the field of architecture.","PeriodicalId":403005,"journal":{"name":"International Research Journal of Innovations in Engineering and Technology","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121197631","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

Performance Analysis of HP Heater with Comparison of the Number of Plugging Tubes in a 400 MW Coal-Fired Power Plant 400mw燃煤电厂高压加热器性能分析及堵管数比较

International Research Journal of Innovations in Engineering and Technology Pub Date : 1900-01-01 DOI: 10.47001/irjiet/2023.705001

Akbar Dwitama, Widayat, M.S.K. Tony Suryo Utomo, N. Sinaga

{"title":"Performance Analysis of HP Heater with Comparison of the Number of Plugging Tubes in a 400 MW Coal-Fired Power Plant","authors":"Akbar Dwitama, Widayat, M.S.K. Tony Suryo Utomo, N. Sinaga","doi":"10.47001/irjiet/2023.705001","DOIUrl":"https://doi.org/10.47001/irjiet/2023.705001","url":null,"abstract":"Each of Units 1-4 SLA PGU has a capacity of 400 MW and seven feedwater heaters, namely three lowpressure feedwater heaters (LPH 1, 2, and 3), a deaerator, and three high-pressure feedwater heaters (HPH 5, 6, and 7). HPH 5 in Unit 2 has experienced 30% tube plugging, which is equivalent to 480 out of 1579 tubes. Plugging is expected to reduce the performance of HPH. If the plugging exceeds the maximum limit, the HPH needs to be retubed to restore equipment reliability. Furthermore, a comparison of the performance of HPH 5 was calculated with plugging variations of 0%, 22%, and 30% when the unit was at full load. The calculation results of terminal temperature difference (TTD), drain cooler approach (DCA), and log mean temperature difference (LMTD) showed an increase with the increase in plugging in HPH. Meanwhile, the calculation of heat rate and effectiveness showed a decrease caused by the additional plugging in the HPH. The largest heat transfer occurs in the condensing zone of the HPH, where the value is around 80% to 85% of the total heat transfer that occurs. All calculations of the relationship between performance parameters and HPH plugging variations have an R-square value of more than 0.67, indicating a strong relationship.","PeriodicalId":403005,"journal":{"name":"International Research Journal of Innovations in Engineering and Technology","volume":"161 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114946979","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

Support Vector Machine Kernel Model Calibration for Optimal Accuracy in Automatic Pineapple Slices Classification 支持向量机核模型校正在菠萝切片自动分类中的最佳精度

International Research Journal of Innovations in Engineering and Technology Pub Date : 1900-01-01 DOI: 10.47001/irjiet/2022.609001

J. Kamau, P. Hinga, S. I. Kamau

{"title":"Support Vector Machine Kernel Model Calibration for Optimal Accuracy in Automatic Pineapple Slices Classification","authors":"J. Kamau, P. Hinga, S. I. Kamau","doi":"10.47001/irjiet/2022.609001","DOIUrl":"https://doi.org/10.47001/irjiet/2022.609001","url":null,"abstract":"Sorting pineapple can be automated with use of computer vision. The unique challenge with the pineapple slices is variability of the fruit slices color, ripeness and texture due to varying environmental parameters and fruit types. The most common types of pineapple fruit are smooth Caen and MD2. Currently the pineapple industries sort the slices manually using casual workers. Before commencement of a typical production shift, there is startup shift where machine are cleaned, prepared and calibrated for the production. Fruit slices are also sampled and processed to simulated actual production. A mock sorting is done to help guide the worker for the expected sorting for the five categories i.e: fancy ¾, fancy ½, choice, broken and reject. To achieve a fully automated sorting process there is a need to calibrate machine model and capture the day to day variability of fruit color, ripeness and texture. In this paper we propose to use an analytical method to calibrate the Support Vector Machine (SVM) with Gaussian radial basis function (RBF) for optimal sigma and box constraint (C). A compelling feature of the proposed algorithm is that it does not require an optimization search, making the selection process simpler and more computationally efficient. The proposed algorithm achieves the highest accuracy when used with the Gaussian multiclass SVM, as demonstrated by experimental results on three real-world datasets.","PeriodicalId":403005,"journal":{"name":"International Research Journal of Innovations in Engineering and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115090540","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

Behavior of Deep Beams using Different Concrete Grades 不同混凝土等级深梁的性能

International Research Journal of Innovations in Engineering and Technology Pub Date : 1900-01-01 DOI: 10.47001/irjiet/2021.508013

N. Ahmed, A. Khalil, Ezz El-deen Mostafa

{"title":"Behavior of Deep Beams using Different Concrete Grades","authors":"N. Ahmed, A. Khalil, Ezz El-deen Mostafa","doi":"10.47001/irjiet/2021.508013","DOIUrl":"https://doi.org/10.47001/irjiet/2021.508013","url":null,"abstract":"This paper presents the experimental results of the investigation of behavior of simply supported deep beams having layers of concrete of different grades (25 MPa and 50 MPa). The tested beams were loaded with one vertical load at mid span up to failure. All specimens were fabricated and tested at the laboratory of reinforced concrete of Faculty of Engineering, Ain Shams University. The experimental program is carried out using five simply supported deep beams having the same dimensions; specimens with an effective span of 1100 mm, width of 200 mm and a height of 1000 mm, specimens also have the same top, bottom, vertical, and horizontal reinforcement. The experimental studies showed that the failure of tested deep beams was mainly due to diagonal cracks. Casting concrete on different layers causes the first cracks appeared at earlier load than in beam with one grade of concrete. It was also found that the best flexural behavior of deep beams is obtained when the bottom layer is casted using high concrete compressive strength and gives results (deflection, and failure load) close to results of deep beam casted with high compressive strength.","PeriodicalId":403005,"journal":{"name":"International Research Journal of Innovations in Engineering and Technology","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129364869","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

Predicting NEPSE Index Using ARIMA Model 利用ARIMA模型预测NEPSE指数

International Research Journal of Innovations in Engineering and Technology Pub Date : 1900-01-01 DOI: 10.47001/irjiet/2022.602014

Avinash Maskey

{"title":"Predicting NEPSE Index Using ARIMA Model","authors":"Avinash Maskey","doi":"10.47001/irjiet/2022.602014","DOIUrl":"https://doi.org/10.47001/irjiet/2022.602014","url":null,"abstract":"Since its inception, the stock market, one of the most financially turbulent markets, has captivated the hearts of thousands of investors. Predicting stock indexes or prices has long been a prominent subject of research in the domain of financial information because of the reward and risk. Also, it has a tremendous beauty as everyone wants to benefit from it. Many approaches are used to forecast stock indexes or prices in the stock market, including technical analysis, fundamental analysis, statistical analysis, and so on, but no single method has shown to be a reliable forecasting tool. This research work contributes to the subject of Time Series Analysis, which seeks to forecast stock market indexes using historical data. In this research work, ARIMA model for NEPSE index has been examined. Published data of daily closing stock index was obtained from Nepal Stock Exchange (NEPSE). With 1798 observations, the data set covers the NEPSE index for approximately eight years, from February 02, 2014 to January 13, 2022. Furthermore, based on the findings, the ARIMA model has a high potential for anticipating short-term market swings, which might be beneficial to short-term traders or investors.","PeriodicalId":403005,"journal":{"name":"International Research Journal of Innovations in Engineering and Technology","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124194946","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

Impacts of DFIG and Type IV WTG‟ Capacity and the Location of Placement on IEEE 13 Node Radial Test Feeder Positive, Negative and Zero Sequence Reactance in Short Circuits 短路中DFIG和IV型WTG容量及放置位置对IEEE 13节点径向试验馈线正、负、零序电抗的影响

International Research Journal of Innovations in Engineering and Technology Pub Date : 1900-01-01 DOI: 10.47001/irjiet/2023.702001

Kemei Peter Kirui, D. Murage, P. Kihato

引用次数: 0

Flood Risk Zones, Housing Development and Response of Residential Property Owners in Calabar Metropolis, Nigeria 尼日利亚卡拉巴尔市洪水风险区、住房开发和住宅业主的反应

International Research Journal of Innovations in Engineering and Technology Pub Date : 1900-01-01 DOI: 10.47001/irjiet/2022.609002

Ogar, Timothy Okey, E. E. Asuquo, Ayuk Simon Obietta

{"title":"Flood Risk Zones, Housing Development and Response of Residential Property Owners in Calabar Metropolis, Nigeria","authors":"Ogar, Timothy Okey, E. E. Asuquo, Ayuk Simon Obietta","doi":"10.47001/irjiet/2022.609002","DOIUrl":"https://doi.org/10.47001/irjiet/2022.609002","url":null,"abstract":"The study examined flood risk zones as ecological constraint to housing development and the response of residential property owners in the Calabar metropolis, Nigeria. Multi-research design was used to map flood risk zones. The continuous data types include satellite imageries, digital elevation model, distance to river and administrative boundary data made up secondary data. Primary data include questionnaires administered to 400 respondents based on the Taro Yamane sample size formula and multi criteria analysis was adopted to select flood prone zones. Findings revealed that places such as MCC road, Old Odukpani Road, Good luck Jonathan Bypass, IBB way, Murtala Mohammed way, Marian and Ndidem Iso Road are located at the very low risk zones. Furthermore, areas located within the Low-risk zone include: Atu street, Ediba Road, Palm street, Summit hills road, Uwanse road, Orok–orok streets, Mary Slessor avenue, 4th avenue and Barracks road. More so, streets such as: Eyo-Ita, Court road, Ekorinim, New Airport road, Atimbo, Bedwell street and Diamond road are located within the Moderate risk zone. Lastly, areas like Jebs road, Edem Ekpo street, Afokang street and Hawkins road fall under the low-risk zones, while no street was classified as very high-risk zone. However flash floods do a lot of damage to properties of urban residents yet many find it difficult to relocate due to cost implicatioin. 69.5% of respondents experience severe flooding 3 to 4 times a year while 10.5% and 20% experience the disaster twice and once respectively in a year. Majority of the respondents depend on government preventive measures. Mixed layouts varying from walled, unwalled to kindred has not help matters. Indication that Calabar is urbanizing rapidly with weak planning agency leading to irrationality of developers in land acquisition.","PeriodicalId":403005,"journal":{"name":"International Research Journal of Innovations in Engineering and Technology","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130662745","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

Development of Affordable Portable Oscilloscope Using Vacuum Tubes 使用真空管的廉价便携式示波器的研制

International Research Journal of Innovations in Engineering and Technology Pub Date : 1900-01-01 DOI: 10.47001/irjiet/2023.706001

Maximilian Aaron Jelačić

引用次数: 0