Pub Date : 2022-08-07DOI: 10.33387/josae.v5i1.4889
Mardhan Fatmona, Erwinsyah Tuhuteru, M. T. Y. Saputra
The Way Umaloya Bridge in the Sula Islands Regency is a reinforced concrete girder type bridge which has a total bridge span length of 60.00 with field survey results there are cracks in each of the longitudinal and transverse girders, corrosion of steel reinforcement and deflection due to repeated loads. The purpose of this research is as a planning alternative to analyze the dimensions of each element of the superstructure of the steel frame bridge in the redesign. In planning the superstructure of the steel truss bridge, warren truss type is used with analysis and design calculations using the LRFD method for control of the steel frame, such as tensile bars, compression rods, bending rods and bolted connections. In each calculation, the superstructure elements are controlled against the requirements for selecting the profile dimensions and controlled for materials and stresses. In planning the super structure of the bridge, the results of the analysis and design were obtained as follows: the use of dimensions and reinforcement on the pavement floor plate and vehicle floor plate used the dimensions of the pavement floor plate 25 x 50 x 6000 cm, with the main reinforcement requirements ø 16-12 mm and reinforcement for ø 12-200 mm, vehicle floor plate dimensions are used 20 x 600 x 6000 cm, with the need for basic reinforcement ø 16-100 mm, reinforcement for ø 12-200, the use of longitudinal girders with dimensions of WF profile 450 x 200 x 9 x 14 mm , the use of transverse girders with a WF profile dimension of 800 x 300 x 14 x 26 mm, the use of a main frame with a WF profile dimension of 400 x 400 x 45 x 70 mm, the use of wind ties with a WF profile dimension of 150 x 150 x 7 x 10 mm, the use of connection on the node plate with a plate thickness of 2.5 cm, the use of connecting plate connections between longitudinal girders, transverse girders, and the main frame with a profile dimension of L 100.100.10 mm. and the use of connection plates on wind ties with a dimension of 1.0 cm thick C profile.
苏拉群岛的Way Umaloya大桥是一座钢筋混凝土主梁式桥梁，桥梁总跨度为60.00，现场调查结果显示，每根纵梁和横梁都有裂缝，钢筋腐蚀和反复荷载引起的挠曲。本研究的目的是作为一种规划替代方案，在重新设计中分析钢框架桥上部结构的每个元素的尺寸。在对钢桁架桥上部结构进行规划时，采用沃伦桁架形式，采用LRFD方法对钢框架的拉伸杆、压缩杆、弯曲杆、螺栓连接等控制进行分析和设计计算。在每次计算中，上部结构单元都是根据选择外形尺寸的要求进行控制，并对材料和应力进行控制。在对桥梁上部结构进行规划时，分析设计结果如下:使用维度和强化在人行道上底板和车辆底板使用人行道上底板的尺寸25 x 50 x 6000厘米,与主钢筋要求ø16-12毫米和强化ø12 - 200毫米,车底板尺寸使用20 x 600 x 6000厘米,需要基本强化ø16 - 100毫米,强化ø12 - 200,使用纵向梁尺寸的WF概要450 x 200 x 9 x 14毫米,横梁的使用WF剖面尺寸为800 x 300 x 14 x 26毫米,使用主框架WF剖面尺寸为400 x 400 x 45 70毫米,使用风与WF剖面尺寸为150 x 150 x 7 x 10毫米,使用节点连接板板厚度为2.5厘米,使用纵向梁之间的连接板连接,横向梁,所述主机架外形尺寸为L 100.100.10 mm，风扎上使用的连接板外形尺寸为1.0 cm厚的C型。
{"title":"ALTERNATIF PERENCANAAN SUPER STRUCTURE JEMBATAN RANGKA BAJA PADA JEMBATAN WAY UMALOYA DI KABUPATEN KEPULAUAN SULA","authors":"Mardhan Fatmona, Erwinsyah Tuhuteru, M. T. Y. Saputra","doi":"10.33387/josae.v5i1.4889","DOIUrl":"https://doi.org/10.33387/josae.v5i1.4889","url":null,"abstract":"The Way Umaloya Bridge in the Sula Islands Regency is a reinforced concrete girder type bridge which has a total bridge span length of 60.00 with field survey results there are cracks in each of the longitudinal and transverse girders, corrosion of steel reinforcement and deflection due to repeated loads. The purpose of this research is as a planning alternative to analyze the dimensions of each element of the superstructure of the steel frame bridge in the redesign. In planning the superstructure of the steel truss bridge, warren truss type is used with analysis and design calculations using the LRFD method for control of the steel frame, such as tensile bars, compression rods, bending rods and bolted connections. In each calculation, the superstructure elements are controlled against the requirements for selecting the profile dimensions and controlled for materials and stresses. In planning the super structure of the bridge, the results of the analysis and design were obtained as follows: the use of dimensions and reinforcement on the pavement floor plate and vehicle floor plate used the dimensions of the pavement floor plate 25 x 50 x 6000 cm, with the main reinforcement requirements ø 16-12 mm and reinforcement for ø 12-200 mm, vehicle floor plate dimensions are used 20 x 600 x 6000 cm, with the need for basic reinforcement ø 16-100 mm, reinforcement for ø 12-200, the use of longitudinal girders with dimensions of WF profile 450 x 200 x 9 x 14 mm , the use of transverse girders with a WF profile dimension of 800 x 300 x 14 x 26 mm, the use of a main frame with a WF profile dimension of 400 x 400 x 45 x 70 mm, the use of wind ties with a WF profile dimension of 150 x 150 x 7 x 10 mm, the use of connection on the node plate with a plate thickness of 2.5 cm, the use of connecting plate connections between longitudinal girders, transverse girders, and the main frame with a profile dimension of L 100.100.10 mm. and the use of connection plates on wind ties with a dimension of 1.0 cm thick C profile.","PeriodicalId":36368,"journal":{"name":"AIUB Journal of Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85823826","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}
Pub Date : 2022-08-04DOI: 10.33387/josae.v5i1.4878
Mochammad Apriyadi Hadi Sirad
Berdasarkan hasil simulasi dapat disimpulkan bahwa tegangan dip yang muncul paling besar akibat terjadinya lonjakan beban pada saat interkoneksi awal sistem kelistrikan 150 kV PLTMG Kastela 30 MW. Tetap tidak berlangsung lama karena dilihat dari hasil simulasi akan kembali normal setelah sistem mulai stabil kembali.
{"title":"ANALISIS DAN SIMULASI TEGANGAN DIP PADA INTERKONEKSI SISTEM KELISTRIKAN 150 KV - PLTMG KASTELA 30 MW","authors":"Mochammad Apriyadi Hadi Sirad","doi":"10.33387/josae.v5i1.4878","DOIUrl":"https://doi.org/10.33387/josae.v5i1.4878","url":null,"abstract":"Berdasarkan hasil simulasi dapat disimpulkan bahwa tegangan dip yang muncul paling besar akibat terjadinya lonjakan beban pada saat interkoneksi awal sistem kelistrikan 150 kV PLTMG Kastela 30 MW. Tetap tidak berlangsung lama karena dilihat dari hasil simulasi akan kembali normal setelah sistem mulai stabil kembali.","PeriodicalId":36368,"journal":{"name":"AIUB Journal of Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89544484","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}
Pub Date : 2022-04-15DOI: 10.33387/josae.v5i1.4841
Zulaeha Mabud, Muhammad Said, Latomi Ahmad
Keberhasilan sistem komunikasi baik diluar ruangan maupun didalam ruangan sangat dipengaruhi oleh rugi-rugi lintasan propagasi. Penelitian ini memprediksi rugi-rugi lintasan propagasi pada gedung dua (2) lantai dimana masing-masing lantai terdiri dari 4 ruangan berdimensi (4x4x4) m. Pemancar diletakkan pada ruangan satu (1) dan ruangan lainnya merupakan penerima. Model propagasi yang digunakan pada penelitian ini adalah cost 231 multi wall model. Hasil perhitungan prediksi total rugi-rugi lintasan propagasi pada lantai satu (1) ruang 2 hingga 4 sebagai berikut 52,946 dB, 62,367 dB, 69,289 dB. Sedangkanuntuk lantai 2 ruang 5 hingga 8 adalah berturut-turut : 62m173 dB, 68,552 dB,75, 952 dB, 82,360 dB.. Dari hasil analisa menunjukan bahwa rugi-rugi lintasan propagasi dalam gedung sangat bervariasi dan sangat bergantung pada jarak pemancar dengan penerima, skema bangunan dan material dalam bangunan tersebut.
{"title":"PREDIKSI RUGI-RUGI PROPAGASI DALAM BANGUNAN MENGGUNAKAN COST 231 MULTIWALL MODEL","authors":"Zulaeha Mabud, Muhammad Said, Latomi Ahmad","doi":"10.33387/josae.v5i1.4841","DOIUrl":"https://doi.org/10.33387/josae.v5i1.4841","url":null,"abstract":"Keberhasilan sistem komunikasi baik diluar ruangan maupun didalam ruangan sangat dipengaruhi oleh rugi-rugi lintasan propagasi. Penelitian ini memprediksi rugi-rugi lintasan propagasi pada gedung dua (2) lantai dimana masing-masing lantai terdiri dari 4 ruangan berdimensi (4x4x4) m. Pemancar diletakkan pada ruangan satu (1) dan ruangan lainnya merupakan penerima. Model propagasi yang digunakan pada penelitian ini adalah cost 231 multi wall model. Hasil perhitungan prediksi total rugi-rugi lintasan propagasi pada lantai satu (1) ruang 2 hingga 4 sebagai berikut 52,946 dB, 62,367 dB, 69,289 dB. Sedangkanuntuk lantai 2 ruang 5 hingga 8 adalah berturut-turut : 62m173 dB, 68,552 dB,75, 952 dB, 82,360 dB.. Dari hasil analisa menunjukan bahwa rugi-rugi lintasan propagasi dalam gedung sangat bervariasi dan sangat bergantung pada jarak pemancar dengan penerima, skema bangunan dan material dalam bangunan tersebut.","PeriodicalId":36368,"journal":{"name":"AIUB Journal of Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81370990","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}
The main purpose of this study is to identify and focus on major factors that affect risk management in construction sites in developing countries like Nepal. Relative Importance Index (RII) analysis is carried out to rank major factors that affect risk management. Besides, ANOVA analysis is carried out to test the hypothesis. Findings show that there is no difference between small and large-scale project groups in their perception of the significance level of factors affecting Project Risk Management. Moreover, “a) payment delay b) project funding problem, and c) defective design” were top three major factors that affect risk management in developing countries like Nepal. The managerial level of construction firms mainly in developing countries, should focus on the top ten critical factors for better improvement of risk management no matter its size- be it is small- or large scale construction firms.
{"title":"Risk Management in Construction Firms in Nepal","authors":"Umesh Sukamani","doi":"10.3126/jsce.v9i9.46303","DOIUrl":"https://doi.org/10.3126/jsce.v9i9.46303","url":null,"abstract":"The main purpose of this study is to identify and focus on major factors that affect risk management in construction sites in developing countries like Nepal. Relative Importance Index (RII) analysis is carried out to rank major factors that affect risk management. Besides, ANOVA analysis is carried out to test the hypothesis. Findings show that there is no difference between small and large-scale project groups in their perception of the significance level of factors affecting Project Risk Management. Moreover, “a) payment delay b) project funding problem, and c) defective design” were top three major factors that affect risk management in developing countries like Nepal. The managerial level of construction firms mainly in developing countries, should focus on the top ten critical factors for better improvement of risk management no matter its size- be it is small- or large scale construction firms.","PeriodicalId":36368,"journal":{"name":"AIUB Journal of Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89291777","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}
Non-linear optimal control problem arises in many different areas, for example, engineering, medical sciences, economics, industries, etc. The solution of Hamilton-Jacobi-Bellman equation is connected with the non -linear optimal control problem. In this paper, we formulate the Hamilton-Jacobi-Bellman equation using nonlinear optimal control problem. We also discuss its solutions using Adomian decomposition method, Laplace transform-Homotopy perturbation method and variational iteration method.
{"title":"A Few Methods of Solving Optimal Control Problem in Hamilton-Jacobi-Bellman Equation Form","authors":"Bhimsen Khadka, Durga Jang K.c.","doi":"10.3126/jsce.v9i9.46290","DOIUrl":"https://doi.org/10.3126/jsce.v9i9.46290","url":null,"abstract":"Non-linear optimal control problem arises in many different areas, for example, engineering, medical sciences, economics, industries, etc. The solution of Hamilton-Jacobi-Bellman equation is connected with the non -linear optimal control problem. In this paper, we formulate the Hamilton-Jacobi-Bellman equation using nonlinear optimal control problem. We also discuss its solutions using Adomian decomposition method, Laplace transform-Homotopy perturbation method and variational iteration method.","PeriodicalId":36368,"journal":{"name":"AIUB Journal of Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86957831","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}
Brain tumor detection and classification is one of the challenging tasks in the medical image application. Early detection of a brain tumor can help diagnosis and treatment of the patients. Magnetic Resonance Imaging (MRI) is widely used for the detection of brain tumor. Manual analysis of brain MRI, and classification of brain tumor is a tedious and time-consuming job. This paper introduces a novel approach to brain tumor segmentation and classification using BRATS 2015 datasets. Our system exploits the benefits of Jaya Algorithm (JA) as an optimization technique for finding multi-level thresholds to segment the tumor part from the MRI. Feature extraction is implemented by Gray Level Co-occurrence Matrix (GLCM), followed by Principal Component Analysis (PCA) for feature reduction. Due to its inherent distinct features and advantages, a machine-learning approach, Twin Support Vector Machine (TSVM) is used as a classifier. The prediction accuracy of the proposed system yielded up to 97.89 % with sensitivity 96.48%, 98.97 precision, 97.91% F1 Score, and 0.0798 MSE. The accuracy, sensitivity, F1 Score, and MSE are found comparable to the other state-of-arts machine learning methods.
脑肿瘤的检测与分类是医学图像应用中的难点之一。脑肿瘤的早期发现有助于患者的诊断和治疗。磁共振成像(MRI)被广泛用于脑肿瘤的检测。人工对脑MRI进行分析，对脑肿瘤进行分类是一项繁琐而耗时的工作。本文介绍了一种基于BRATS 2015数据集的脑肿瘤分割分类新方法。我们的系统利用了Jaya算法(JA)作为一种优化技术的优势，用于从MRI中寻找多级阈值来分割肿瘤部分。通过灰度共生矩阵(GLCM)实现特征提取，然后通过主成分分析(PCA)进行特征约简。由于其固有的独特特点和优势，采用机器学习方法Twin Support Vector Machine (TSVM)作为分类器。该系统的预测准确度为97.89%，灵敏度为96.48%，精密度为98.97,F1 Score为97.91%，MSE为0.0798。准确性、灵敏度、F1分数和MSE与其他最先进的机器学习方法相当。
{"title":"Detection and Classification of MRI-Based Brain Tumor via Jaya Algorithm and Twin Support Vector Machine","authors":"Dinesh Ghemosu, S. R. Joshi","doi":"10.3126/jsce.v9i9.46299","DOIUrl":"https://doi.org/10.3126/jsce.v9i9.46299","url":null,"abstract":"Brain tumor detection and classification is one of the challenging tasks in the medical image application. Early detection of a brain tumor can help diagnosis and treatment of the patients. Magnetic Resonance Imaging (MRI) is widely used for the detection of brain tumor. Manual analysis of brain MRI, and classification of brain tumor is a tedious and time-consuming job. This paper introduces a novel approach to brain tumor segmentation and classification using BRATS 2015 datasets. Our system exploits the benefits of Jaya Algorithm (JA) as an optimization technique for finding multi-level thresholds to segment the tumor part from the MRI. Feature extraction is implemented by Gray Level Co-occurrence Matrix (GLCM), followed by Principal Component Analysis (PCA) for feature reduction. Due to its inherent distinct features and advantages, a machine-learning approach, Twin Support Vector Machine (TSVM) is used as a classifier. The prediction accuracy of the proposed system yielded up to 97.89 % with sensitivity 96.48%, 98.97 precision, 97.91% F1 Score, and 0.0798 MSE. The accuracy, sensitivity, F1 Score, and MSE are found comparable to the other state-of-arts machine learning methods.","PeriodicalId":36368,"journal":{"name":"AIUB Journal of Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87235718","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}
The generative adversarial networks seem to work very effectively for training generative deep neural networks. The aim is to generate Nepali Handwritten letters using adversarial training in raster image format. Deep Convolutional generative network is used to generate Nepali handwritten letters. Proposed generative adversarial model that works on Devanagari 36 classes, each having 10,000 images, generates the Nepali Handwritten Letters that are similar to the real-life data-set of total size 360,000 images. The generated letters are obtained by simultaneously training the generator and discriminator of the network. Constructed discriminator networks and generator networks both have five convolution layers and the activation function is chosen such that generator networks generate the image and discriminator networks check if the generated image is similar to a real-life image dataset. To measure the quantitative performance, Frechet Inception Distance (FID) methodology is used. The FID value of 18 random samples, generated by networks constructed, is 38413677.145. For a qualitative measure of the model let the reader judge the quality of the image generated by the generator trained model. The Nepali letters were generated by the adversarial network as required. The evaluation helps the generative model to be better and further enables a better generation that humans have not thought of.
{"title":"Nepali Handwritten Letter Generation using GAN","authors":"Basant Bhandari, Aakash Raj Dhakal, Laxman Maharjan, Asmin Karki","doi":"10.3126/jsce.v9i9.46308","DOIUrl":"https://doi.org/10.3126/jsce.v9i9.46308","url":null,"abstract":"The generative adversarial networks seem to work very effectively for training generative deep neural networks. The aim is to generate Nepali Handwritten letters using adversarial training in raster image format. Deep Convolutional generative network is used to generate Nepali handwritten letters. Proposed generative adversarial model that works on Devanagari 36 classes, each having 10,000 images, generates the Nepali Handwritten Letters that are similar to the real-life data-set of total size 360,000 images. The generated letters are obtained by simultaneously training the generator and discriminator of the network. Constructed discriminator networks and generator networks both have five convolution layers and the activation function is chosen such that generator networks generate the image and discriminator networks check if the generated image is similar to a real-life image dataset. To measure the quantitative performance, Frechet Inception Distance (FID) methodology is used. The FID value of 18 random samples, generated by networks constructed, is 38413677.145. For a qualitative measure of the model let the reader judge the quality of the image generated by the generator trained model. The Nepali letters were generated by the adversarial network as required. The evaluation helps the generative model to be better and further enables a better generation that humans have not thought of.","PeriodicalId":36368,"journal":{"name":"AIUB Journal of Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83723401","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}
Social Networking Sites (SNS) have become very fashionable during the past decade, as they permit users to both express their personal feelings and meet friends, relatives, and people with similar interests. There are many potential threats to data privacy and security like fraud, identity theft, and disclosure of sensitive information. Many users are still not conscious of these threats. Moreover, the privacy settings provided by SNSs aren't flexible and reliable enough to protect user data. Users don't have any control over what others reveal about them. We conducted a preliminary study among internet users of Nepal which examines the privacy and security issues in SNSs because the users share their information and put varieties of data on SNSs. This study intends to protect the user information from any misuse, to make sure of data security, and to permit users to choose what information to share and with whom. Another objective of this study is to measure the level of steps taken by the SNS operators. We identified privacy and security issues in SNS and propose a Privacy and Security Framework as a foundation to deal with these problems.
{"title":"Privacy and Security Issues in Social Networking Sites (SNS)","authors":"Naresh Khatri, Sunil Paudel","doi":"10.3126/jsce.v9i9.46294","DOIUrl":"https://doi.org/10.3126/jsce.v9i9.46294","url":null,"abstract":"Social Networking Sites (SNS) have become very fashionable during the past decade, as they permit users to both express their personal feelings and meet friends, relatives, and people with similar interests. There are many potential threats to data privacy and security like fraud, identity theft, and disclosure of sensitive information. Many users are still not conscious of these threats. Moreover, the privacy settings provided by SNSs aren't flexible and reliable enough to protect user data. Users don't have any control over what others reveal about them. We conducted a preliminary study among internet users of Nepal which examines the privacy and security issues in SNSs because the users share their information and put varieties of data on SNSs. This study intends to protect the user information from any misuse, to make sure of data security, and to permit users to choose what information to share and with whom. Another objective of this study is to measure the level of steps taken by the SNS operators. We identified privacy and security issues in SNS and propose a Privacy and Security Framework as a foundation to deal with these problems.","PeriodicalId":36368,"journal":{"name":"AIUB Journal of Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88036498","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}
Integration of rooftop solar PV by a residential consumer to the grid is beneficial to both consumer and grid if integrated optimally. The minimization of power loss by improving the voltage profile on the grid side and reducing the electricity bill by improving energy deficiency faced by the residential consumer is the benefit of the integrated PV system. The preparation of this paper is based on the study of grid impact analysis and performance analysis of solar among the urban areas of Lalitpur. First, the grid impact and optimum size calculation are performed in IEEE-33 and IEEE-15 bus test system, and Pulchowk feeder is taken for the study of real scenario. Improvement of voltage profile, loss reduction, and the number of houses feasible for injecting PV generation has been demonstrated graphically. The power loss is found to be reduced by 62.5% after injecting solar PV into the grid. PVsyst has been used for the performance analysis of the PV array and the performance ratios are within limits with a capacity factor of 0.177 and performance ratio of 0.74 and system yield factor of 4.24 kWh/kWp/day. From all the results and performance analysis, it can be concluded that integration of 1 kWp rooftop solar is technically feasible if the optimum number of houses are allowed to inject PV array power at the optimum location.
{"title":"Technical Analysis of Grid Connected 1 kWP Rooftop Solar PV for Residential Consumer at Urban Areas of Lalitpur, Nepal","authors":"Rupesh Gautam, Hari Bahadur Darlami","doi":"10.3126/jsce.v9i9.46289","DOIUrl":"https://doi.org/10.3126/jsce.v9i9.46289","url":null,"abstract":"Integration of rooftop solar PV by a residential consumer to the grid is beneficial to both consumer and grid if integrated optimally. The minimization of power loss by improving the voltage profile on the grid side and reducing the electricity bill by improving energy deficiency faced by the residential consumer is the benefit of the integrated PV system. The preparation of this paper is based on the study of grid impact analysis and performance analysis of solar among the urban areas of Lalitpur. First, the grid impact and optimum size calculation are performed in IEEE-33 and IEEE-15 bus test system, and Pulchowk feeder is taken for the study of real scenario. Improvement of voltage profile, loss reduction, and the number of houses feasible for injecting PV generation has been demonstrated graphically. The power loss is found to be reduced by 62.5% after injecting solar PV into the grid. PVsyst has been used for the performance analysis of the PV array and the performance ratios are within limits with a capacity factor of 0.177 and performance ratio of 0.74 and system yield factor of 4.24 kWh/kWp/day. From all the results and performance analysis, it can be concluded that integration of 1 kWp rooftop solar is technically feasible if the optimum number of houses are allowed to inject PV array power at the optimum location.","PeriodicalId":36368,"journal":{"name":"AIUB Journal of Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81194260","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}
In this article, we begin with classical Lebesgue spaces Lp with p being constant and review the various properties such as completeness and duality of the space. To this end, we also discuss the boundedness of Hardy-Littlewood maximal function and interpolation on such spaces. Finally, we focus our attention on variable exponent Lebesgue spaces and review various results on it. Moreover, we also see the differences in between these Lebesgue spaces.
{"title":"A Review on the Lebesgue Spaces","authors":"Santosh Ghimire, Bimala Mishra","doi":"10.3126/jsce.v9i9.46293","DOIUrl":"https://doi.org/10.3126/jsce.v9i9.46293","url":null,"abstract":"In this article, we begin with classical Lebesgue spaces Lp with p being constant and review the various properties such as completeness and duality of the space. To this end, we also discuss the boundedness of Hardy-Littlewood maximal function and interpolation on such spaces. Finally, we focus our attention on variable exponent Lebesgue spaces and review various results on it. Moreover, we also see the differences in between these Lebesgue spaces.","PeriodicalId":36368,"journal":{"name":"AIUB Journal of Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72829793","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}
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