Pub Date : 2023-07-25DOI: 10.21744/ijecs.v6n1.2171
M. Amin, S. Sulardjaka, S. Saptadi
All countries in the world have a high dependence on energy. Predictions of energy demand continue to increase in all countries, so savings measures are needed. One of the saving measures in the power generation industry is an overhaul. An overhaul is a maintenance activity that must be carried out periodically to maintain the NPHR performance of the power plant as it was when the initial conditions were built. This study aims to (1) determine the performance of the power plant before and after overhaul, (2) determine how the PLTU performs at 50%, 75%, and 100% load, and (3) analyze the techno-economics of overhaul activities with a serious type inspection. The results of this study explain that the three treatments of the post-overhaul loading pattern have a good impact on the PLTU, namely in the form of a decrease in the NPHR after the overhaul work. The impact of the reduced post-overhaul NPHR value at this PLTU is that it can save fuel costs of 17.5 billion rupiah per year. The cost for this overhaul work is 14.9 billion rupiah so in 1 year it can save around 2.6 billion rupiah.
{"title":"Performance analysis and techno economy of post overhaul circulating fluidized bed boiler PLTU","authors":"M. Amin, S. Sulardjaka, S. Saptadi","doi":"10.21744/ijecs.v6n1.2171","DOIUrl":"https://doi.org/10.21744/ijecs.v6n1.2171","url":null,"abstract":"All countries in the world have a high dependence on energy. Predictions of energy demand continue to increase in all countries, so savings measures are needed. One of the saving measures in the power generation industry is an overhaul. An overhaul is a maintenance activity that must be carried out periodically to maintain the NPHR performance of the power plant as it was when the initial conditions were built. This study aims to (1) determine the performance of the power plant before and after overhaul, (2) determine how the PLTU performs at 50%, 75%, and 100% load, and (3) analyze the techno-economics of overhaul activities with a serious type inspection. The results of this study explain that the three treatments of the post-overhaul loading pattern have a good impact on the PLTU, namely in the form of a decrease in the NPHR after the overhaul work. The impact of the reduced post-overhaul NPHR value at this PLTU is that it can save fuel costs of 17.5 billion rupiah per year. The cost for this overhaul work is 14.9 billion rupiah so in 1 year it can save around 2.6 billion rupiah.","PeriodicalId":190246,"journal":{"name":"International journal of engineering & computer science","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114334271","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 : 2023-02-09DOI: 10.21744/ijecs.v6n1.2077
Mabel Dayana Lopez-Brown
The objective of this research is to analyze the influence of technology on the academic performance of the students of the "Uruguay" Fiscal Educational Unit for the 2021-2022 school year. The methodology that was used is of a qualitative-quantitative type, with a descriptive design, it is field, correlational, and non-experimental. The population is made up of 1,200 students from the "Uruguay" Fiscal Educational Unit, obtaining a sample of 291 students to be surveyed. With the SPSS® statistical program and Cronbach's Alpha coefficient, a reliability of 0.824 was obtained; In addition, with the results obtained from Spearman's Rho coefficient of 0.778 in the general hypothesis, it is verified that students are clear that technology currently has a positive impact on the educational environment, since it improves educational effectiveness and didactic methods, contributing to the teaching-learning process and strengthening academic performance.
{"title":"The influence of technology on the academic performance of students at the “Uruguay” fiscal educational unit for the 2021-2022 school year","authors":"Mabel Dayana Lopez-Brown","doi":"10.21744/ijecs.v6n1.2077","DOIUrl":"https://doi.org/10.21744/ijecs.v6n1.2077","url":null,"abstract":"The objective of this research is to analyze the influence of technology on the academic performance of the students of the \"Uruguay\" Fiscal Educational Unit for the 2021-2022 school year. The methodology that was used is of a qualitative-quantitative type, with a descriptive design, it is field, correlational, and non-experimental. The population is made up of 1,200 students from the \"Uruguay\" Fiscal Educational Unit, obtaining a sample of 291 students to be surveyed. With the SPSS® statistical program and Cronbach's Alpha coefficient, a reliability of 0.824 was obtained; In addition, with the results obtained from Spearman's Rho coefficient of 0.778 in the general hypothesis, it is verified that students are clear that technology currently has a positive impact on the educational environment, since it improves educational effectiveness and didactic methods, contributing to the teaching-learning process and strengthening academic performance.","PeriodicalId":190246,"journal":{"name":"International journal of engineering & computer science","volume":"211 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116154214","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 : 2022-11-18DOI: 10.21744/ijecs.v5n1.2019
Nufrizal Faried Hanafi, S. Winarno
The purpose of this article is to analyze the indicators and risk categories of contractor construction industry service providers. This research method uses literature review and is strengthened by Focus Group Discussion (FGD). The literature review aims to increase the understanding and find appropriate sources for research, which are obtained from sources that will be the basis of this research. From the literature review also obtained the risk factors to be studied. Furthermore, the results of the literature review are carried out in FGDs, to see their relevance to field needs. The selected FGD participants were construction service providers in the contractor sector. There are 2 risk factors to identify risk for construction service providers in the field of contractors in handling projects, namely risks in the management/office and risks in the field. Construction service providers in construction work need to carry out a detailed post cost analysis of risks at each stage of the construction business process in management and risk in the field by distinguishing between the pre-tender process, the construction process, and the maintenance period.
本文的目的是分析承包商建筑业服务提供商的指标和风险类别。本研究方法采用文献回顾法，并辅以焦点小组讨论法(Focus Group Discussion, FGD)。文献综述的目的是增加理解并为研究找到合适的来源，这些来源将成为本研究的基础。从文献综述中也得到了需要研究的危险因素。此外，文献综述的结果在fgd中进行，以了解它们与实地需求的相关性。选定的FGD参加者是承建商界别的建筑服务供应商。在承建商处理工程项目的过程中，有两个风险因素可供建筑服务供应商识别，即管理层/办公室的风险和现场的风险。施工服务提供商在施工工作中需要对施工业务过程中各个阶段的风险进行详细的后期成本分析，在管理和现场风险方面要区分投标前阶段、施工过程和维护阶段。
{"title":"Analysis risk in the contracting business","authors":"Nufrizal Faried Hanafi, S. Winarno","doi":"10.21744/ijecs.v5n1.2019","DOIUrl":"https://doi.org/10.21744/ijecs.v5n1.2019","url":null,"abstract":"The purpose of this article is to analyze the indicators and risk categories of contractor construction industry service providers. This research method uses literature review and is strengthened by Focus Group Discussion (FGD). The literature review aims to increase the understanding and find appropriate sources for research, which are obtained from sources that will be the basis of this research. From the literature review also obtained the risk factors to be studied. Furthermore, the results of the literature review are carried out in FGDs, to see their relevance to field needs. The selected FGD participants were construction service providers in the contractor sector. There are 2 risk factors to identify risk for construction service providers in the field of contractors in handling projects, namely risks in the management/office and risks in the field. Construction service providers in construction work need to carry out a detailed post cost analysis of risks at each stage of the construction business process in management and risk in the field by distinguishing between the pre-tender process, the construction process, and the maintenance period.","PeriodicalId":190246,"journal":{"name":"International journal of engineering & computer science","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129318109","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 : 2022-05-12DOI: 10.21744/ijecs.v5n1.1890
Viktor Nanobashvili, Vakhtang Abuladze, Dimitri Sekhniashvili
The article deals with the issues of error detection and correction in the second order bi-pulse code. The analysis of the code generation algorithm is carried out, based on which it is shown that the code has 4 allowed four-bit combinations. The article considers own resources of a code which allow detecting and correcting both single errors and packets of errors. It is shown that errors are detected with probability of 1 when one, two and three bits of the code combination are distorted, while the probability of their correction does not exceed 0.5, in the case of distortion of all four symbols, both detection and correction of errors is impossible. To increase the probability of error correction, it is proposed to use a well-known method based on determining the parity or oddness of the allowed combinations in separate fragments of a linear signal, a brief description of the method is given, its analysis is carried out in relation to this code. It is shown that the use of this method makes it possible to correct all single, paired and three-time errors, as well as to detect all four-time errors, on the basis of which it can be concluded that it significantly improves the correcting properties of the signal under consideration.
{"title":"Error detection and correction in one mBnB class code","authors":"Viktor Nanobashvili, Vakhtang Abuladze, Dimitri Sekhniashvili","doi":"10.21744/ijecs.v5n1.1890","DOIUrl":"https://doi.org/10.21744/ijecs.v5n1.1890","url":null,"abstract":"The article deals with the issues of error detection and correction in the second order bi-pulse code. The analysis of the code generation algorithm is carried out, based on which it is shown that the code has 4 allowed four-bit combinations. The article considers own resources of a code which allow detecting and correcting both single errors and packets of errors. It is shown that errors are detected with probability of 1 when one, two and three bits of the code combination are distorted, while the probability of their correction does not exceed 0.5, in the case of distortion of all four symbols, both detection and correction of errors is impossible. To increase the probability of error correction, it is proposed to use a well-known method based on determining the parity or oddness of the allowed combinations in separate fragments of a linear signal, a brief description of the method is given, its analysis is carried out in relation to this code. It is shown that the use of this method makes it possible to correct all single, paired and three-time errors, as well as to detect all four-time errors, on the basis of which it can be concluded that it significantly improves the correcting properties of the signal under consideration.","PeriodicalId":190246,"journal":{"name":"International journal of engineering & computer science","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123646060","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 : 2022-04-11DOI: 10.21744/ijecs.v5n1.1883
Noor Ibrahim Bdaiwi, Ziad Tarik AI-Dhhan
A laparoscopic camera is a device used to view internal organs in the abdomen when a laparoscopic camera is inserted through a small incision in the abdomen.We use an embedded system to develop a low-cost laparoscopic camera and refine and evaluate the whole system. Small size production using various parameters to evaluate the usefulness of a portable, low-cost, camera-less laparoscopic simulator for training laparoscopy in abdominal surgery and the inexpensively of hospital environment constraints. Characterization of Raspberry Pi Embedded Compact system with perfect camera and image processing system. Design and compact, low-cost laparoscopic camera system and performance evaluation by hospital staff.
{"title":"Enhancing low cost camera laparoscopic system based on embedded systems","authors":"Noor Ibrahim Bdaiwi, Ziad Tarik AI-Dhhan","doi":"10.21744/ijecs.v5n1.1883","DOIUrl":"https://doi.org/10.21744/ijecs.v5n1.1883","url":null,"abstract":"A laparoscopic camera is a device used to view internal organs in the abdomen when a laparoscopic camera is inserted through a small incision in the abdomen.We use an embedded system to develop a low-cost laparoscopic camera and refine and evaluate the whole system. Small size production using various parameters to evaluate the usefulness of a portable, low-cost, camera-less laparoscopic simulator for training laparoscopy in abdominal surgery and the inexpensively of hospital environment constraints. Characterization of Raspberry Pi Embedded Compact system with perfect camera and image processing system. Design and compact, low-cost laparoscopic camera system and performance evaluation by hospital staff.","PeriodicalId":190246,"journal":{"name":"International journal of engineering & computer science","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116090556","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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