International Journal of Engineering Science Technologies最新文献

{"title":"MOUNTAINOUS ROAD ROCK ENGINEERING: TECHNIQUES, ENVIRONMENTAL IMPACTS, AND SUSTAINABLE DEVELOPMENT STRATEGIES","authors":"Chuan Duan","doi":"10.29121/ijoest.v8.i3.2024.603","DOIUrl":"https://doi.org/10.29121/ijoest.v8.i3.2024.603","url":null,"abstract":"This paper comprehensively explores the key technologies and their implementation in mountainous road rock engineering, particularly under complex geological conditions and environmental challenges. Initially, the paper analyzes the geological characteristics of rock bodies, including rock types and geological structures, and assesses the stability of these rock bodies based on these characteristics. Subsequently, it details current construction techniques such as anchoring, shotcreting, and support structures and discusses the use of green materials and the implementation of ecological restoration projects to minimize the impact on the mountainous ecosystem. Through the analysis of successful and unsuccessful engineering cases, the paper summarizes the key factors ensuring project success, as well as lessons learned from failures. Finally, the paper anticipates future technological trends in mountainous road rock engineering, emphasizing the importance of intelligent monitoring, ecological engineering, and new material technologies. This study aims to provide scientific guidance and reference for mountainous road rock engineering, striving for technological optimization and environmental sustainability.The following will guide the structure of your abstract:Motivation/Background: This study addresses the challenges of mountainous road rock engineering under complex conditions, aiming to enhance practices for ecosystem balance and technological sustainability.Method: The research assesses geological characteristics, construction techniques, and ecological integration, analyzing both successful and failed projects to derive key insights and strategies.Results: Results underline the effectiveness of construction methods, ecological benefits of green practices, and crucial insights from case study evaluations, highlighting technological advancements.Conclusions: Concluding that robust understanding and strategic application of technologies are crucial, the study underscores the importance of ecological and technological advancements in improving mountainous road rock engineering.","PeriodicalId":331301,"journal":{"name":"International Journal of Engineering Science Technologies","volume":"45 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141113512","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":"TIME AND COST EFFICIENCY ANALYSIS OF ACEH TENGAH REGENCY POM WORKSHOP PROJECT: A CRITICAL PATH METHOD APPROACH","authors":"Hafnidar A Rani, Fida Filaya Maina, Muhammad Shafly Aqsha, Muhammad Hafidz Mubarak","doi":"10.29121/ijoest.v8.i3.2024.604","DOIUrl":"https://doi.org/10.29121/ijoest.v8.i3.2024.604","url":null,"abstract":"The study addresses construction delays in the Aceh Tengah Regency POM Workshop project, valued at IDR 6,414,000,000 and spanning approximately 1,507 m2 across two floors. Motivated by the need for a comprehensive understanding of activity relationships and critical paths, the research aims to assess project duration, costs, and efficiency. Employing the Critical Path Method (CPM) due to data constraints, the study elucidates activity dependencies, network planning, and critical paths. Data collected from relevant stakeholders include schedule and cost budget plans. The analysis reveals a potential acceleration of 21 days, reducing the project duration from 126 to 105 days with a 99.74% probability. Cost control indicates an escalation to IDR 6,949,573,170.20 after calculating direct costs, with a daily increase of 0.92%. The findings underscore the significance of CPM in project management, offering insights into optimizing timelines and costs. The study highlights the importance of efficient project management methodologies in addressing construction delays and managing project budgets effectively.","PeriodicalId":331301,"journal":{"name":"International Journal of Engineering Science Technologies","volume":"53 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141116872","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":"CFD MODELING AND SIMULATION OF A COUNTERCURRENT REACTOR OF HIDROTREATMENT PROCESS WITH JATROPHA CURCAS L. VEGETABLE OIL","authors":"Pablo Vizguerra Morales, Fabian S. Mederos Nieto","doi":"10.29121/ijoest.v8.i3.2024.596","DOIUrl":"https://doi.org/10.29121/ijoest.v8.i3.2024.596","url":null,"abstract":"In this work, a microscale countercurrent reactor was analyzed and simulated in CFD, and the results were compared with a drained bed reactor (TBR) which is held in the CMP+L research center. The importance of this study is to find the mathematical model of the countercurrent reactor to produce clean fuels from Jatropha Curcas L. vegetable oil and in the future scale it to an industrial level. For the hydrotreatment process, a commercial CoMo/γ-Al2O3 catalyst was used, and Jatropha Curcas L vegetable oil was used as raw material. The operating conditions that were considered for the CFD simulation were temperature 380 °C, pressure 8 MPag, LHSV 8.0 h−1. The reactor model considers a reaction mechanism 13 hydrocracking reactions of triglycerides towards renewable fuels. The CFD simulation was carried out in Fluent 18.2 in a transient state and in 3 dimensions, considering the standard k-ϵ turbulence model, the Eulerian multiphase model and the porous medium model, obtaining results very similar to the experimental ones, with a conversion of triglycerides of 0.996% and the retention time of the liquid temperature was 169 seconds and in the simulation is 200 seconds, the molar concentration profiles of the products were obtained whereby this model can be applied to the industrial scale.","PeriodicalId":331301,"journal":{"name":"International Journal of Engineering Science Technologies","volume":"126 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141115220","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":"FACTORS AFFECTING COSMETIC SURGERY AMONG YOUNG ADULTS IN MUMBAI","authors":"Hhet Sanjeev Shah, Kavya Jitesh Solanki, Krish Paresh Shah, Manas Sonesh Shah, Purav Mitulkumar Shah","doi":"10.29121/ijoest.v8.i3.2024.592","DOIUrl":"https://doi.org/10.29121/ijoest.v8.i3.2024.592","url":null,"abstract":"This study investigates the factors influencing the decision-making process of young adults in Mumbai regarding cosmetic surgery. By combining quantitative surveys and qualitative analyses, the research explores the impact of mental health, self-image consciousness, family support, social acceptance, and other variables on individuals' choices to undergo cosmetic procedures. The findings highlight the intricate interplay of psychological, social, and cultural factors driving the rising popularity of cosmetic surgeries among young adults in Mumbai. The study emphasizes the importance of a holistic approach to comprehend these influences and suggests the development of targeted interventions to foster positive self-image and overall well-being in this demographic.","PeriodicalId":331301,"journal":{"name":"International Journal of Engineering Science Technologies","volume":" 44","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140999019","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":"ENHANCING DECISION-MAKING IN WATER RESOURCESMANAGEMENT: AN INNOVATIVE ASSESSMENT OF EXPERT CONSISTENCY AND COMPETENCE","authors":"B. Srdjevic, Z. Srđević, Milica Ilić, Senka Ždero","doi":"10.29121/ijoest.v8.i2.2024.584","DOIUrl":"https://doi.org/10.29121/ijoest.v8.i2.2024.584","url":null,"abstract":"In the assessment of principles and guidelines to achieve specific goals before strategies in water resources and related sectors are formulated, the quality of experts participating in making group decisions should be evaluated. This paper introduces an innovative approach designed to evaluate the quality of group members based on their consistency and deviations from the group's decision. The group members are considered as alternatives within a multi-criteria framework, employing several typical performance indicators as criteria to assess their competence and compliance with the group. Considering the policy-making, the paper provides a rationale for possibly excluding certain members from the decision-making process to prevent making unsustainable decisions. A case study is presented about the evaluation of the importance of six Ramsar sites in Serbia, facing imminent threats from water regime disturbances and climate change-induced droughts. Seven experts participated in the process and the results revealed that several experts displayed the poorest performance across all three prioritization schemes. This suggests the necessity for re-evaluating their judgments or considering their exclusion from the final decision-making process. The proposed assessment procedure holds promise for enhancing the potential to derive sustainable solutions in any complex and critical domain of water resources policy-making and strategic planning.","PeriodicalId":331301,"journal":{"name":"International Journal of Engineering Science Technologies","volume":" 54","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140685132","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":"PRECISE PEENING OF NI-CR-MO STEEL BY ENERGY-INTENSIVE MULTIFUNCTION CAVITATION IN CONJUNCTION WITH POSITRON IRRADIATION","authors":"Toshihiko Yoshimura, Shintaro Yamamoto, Hayato Watanabe","doi":"10.29121/ijoest.v8.i2.2024.589","DOIUrl":"https://doi.org/10.29121/ijoest.v8.i2.2024.589","url":null,"abstract":"The peening characteristics of Ni-Cr-Mo steel were investigated using energy-intensive multifunction cavitation using positron irradiation (PMEI-MFC). It was found that PMEI-MFC in a high magnetic field, multifunction cavitation in a high magnetic field (MEI-MFC), laser irradiation ultrasonic cavitation (LMEI-UC), and a combination of positron and laser irradiation ultrasonic cavitation in a high magnetic field (PLMEI-UC) could reduce the surface roughness of unprocessed metal specimens by approximately one-fourth. Furthermore, the PMEI-MFC method greatly improved the residual stress at the metal surface by up to 1155 MPa. Each of these technologies was found to increase the surface hardness although the PLM-WJC and PMEI-MFC processes, which generated high temperatures, produced smaller increases than were obtained using the LMEI-MFC technique. This difference is attributed to recrystallization, which eliminated work hardening at the outermost metal surface during processing using positrons. The data also indicate that the PMEI-MFC method was able to both smooth and flatten the metal surface. This research demonstrates an approach to precision peening that can reduce surface roughness while imparting high compressive residual stress.","PeriodicalId":331301,"journal":{"name":"International Journal of Engineering Science Technologies","volume":" 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140682877","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":"EXPLORING DIURNAL PATTERNS: DROP SIZE AND RAINFALL RATE DYNAMICS AT SHILLONG STATION","authors":"Nita H Shah, Jyoti Chahal, Bipasha Paul Shukla","doi":"10.29121/ijoest.v8.i2.2024.583","DOIUrl":"https://doi.org/10.29121/ijoest.v8.i2.2024.583","url":null,"abstract":"Rainfall prediction is crucial for various aspects of human life, environmental sustainability, and agriculture. Understanding rainfall intensity and its dependence on factors such as drop size distribution (DSD) is essential. This study investigates the relationship between drop size distribution and rainfall rate at Shillong station, Meghalaya, India, utilizing RD-80 disdrometer data for the year 2005. DSD plays a pivotal role in quantitative precipitation estimation, impacting rainfall properties like water content, intensity, and kinetic energy. Moreover, it is integral to satellite communication, aiding in the prediction of wave attenuation. We analyze the data to ascertain the correlation between rainfall rate and DSD, with an assumption of an exponential form for DSD. The analysis categorizes the daytime into four segments: Morning (6:00 AM-12:00 PM), Afternoon (12:00 PM-6:00 PM), Evening (6:00 PM-12:00 AM), and Night (12:00 AM-6:00 AM) to observe rain's diurnal variations. Notably, variations in correlation coefficients suggest differing rainfall patterns and intensity levels throughout the day and across months. These insights contribute to a deeper understanding of rainfall dynamics in the region, which is critical for effective water resource management and disaster preparedness.","PeriodicalId":331301,"journal":{"name":"International Journal of Engineering Science Technologies","volume":"44 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140747086","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":"INVESTIGATION OF THE QUALITY PROBLEMS NOTICED BY UNIVERSITY STUDENTS WHILE USING JEANS","authors":"A. A. İlleez, Esra Yarar","doi":"10.29121/ijoest.v7.i6.2023.555","DOIUrl":"https://doi.org/10.29121/ijoest.v7.i6.2023.555","url":null,"abstract":"Denim jeans are one of the most popular products that can be worn in many occasions, from daily life to special events. In order not to lose its popularity, it must be able to meet the preferences of users. For this reason, manufacturers are constantly researching new colors, new models and new fabric constructions and trying to improve their processes. In this study, university students, who are almost one of the most intense users of denim trousers, were asked about their experiences in using denim trousers. They were questioned about their preferences when using denim jeans, the quality problems they encountered about the products. Answers of 400 participants who returned the surveys were analyzed.","PeriodicalId":331301,"journal":{"name":"International Journal of Engineering Science Technologies","volume":"56 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139006851","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 CHALLENGES OF MANAGING TAX COMPLIANCE IN DEVELOPING COUNTRIES: A CASE OF BOTSWANA","authors":"Jane M. Monyake, Tshepo Maswabi, Kuruba Gangappa","doi":"10.29121/ijoest.v7.i6.2023.551","DOIUrl":"https://doi.org/10.29121/ijoest.v7.i6.2023.551","url":null,"abstract":"Managing tax compliance issues proved to be a complex administrative task for many developing countries, especially in Africa. These challenges lie in conceptual definition of tax compliance and noncompliance. Randlane (2015) complains that the absence of universal definition for tax compliance and tax noncompliance makes it difficult to differentiate compliant behavior from non-compliant behavior. This paper explores tax compliance management strategies which developing countries can learn from and benchmark against. The study employs a content analysis method and taps from scholarly journals and articles from different time periods, the most recent being 2022. It adopts Randlane (2015) Simplified Model of Tax Compliance to investigate the strategic approaches that simplify management of tax compliance and factors that influence compliant decisions and choices. The framework provides some helpful insights by distinguishing the three thronged strategic approach of enforcement, service and trust, and the factors that must be closely considered when developing tax compliance management strategies that might help mitigate the major challenges confronting developing countries like Botswana. The paper also explores search words such as tax compliance, tax noncompliance, tax evasion, tax avoidance, hut tax, and shadow economies. The paper concludes that no single strategic approach effectively and sustainably manages tax compliance issues. Further, that voluntary compliance remains an illusion Manhire (2015) and Gildenhuys, 1997 cited in Botlhale (2019) because compliance has nothing to do with taxpayer willingness to pay or not to pay taxes as it is an outcome that has already been achieved voluntarily or by force Randlane (2015).","PeriodicalId":331301,"journal":{"name":"International Journal of Engineering Science Technologies","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139213868","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":"ADDRESSING THE FIRE SAFETY PROBLEMS IN SHOPPING CENTRES OF DHAKA CITY: A CASE STUDY ON SOME SELECTED SHOPPING CENTRES IN MIRPUR AREA","authors":"Md. Main Uddin, S. M. Nawshad Hossain, Tanzila Aktar Shawon, Ashraf Uddin Fahim, Sabrina Sharmin, Mohammad Mizanur Rahman","doi":"10.29121/ijoest.v7.i6.2023.539","DOIUrl":"https://doi.org/10.29121/ijoest.v7.i6.2023.539","url":null,"abstract":"The city of dhaka has been seeing a significant number of fire incidents. The exacerbation of the crisis is mostly attributed to a combination of institutional incompetence, insufficient equipment support, poor preventative measures, and a lack of awareness among people. The occurrence of fires in various shopping malls has become more prevalent in contemporary times. In the event of fire incidents inside shopping malls, there is a potential for both human casualties and property damage to occur. Contemporary shopping practices include the use of ornamental materials that possess a heightened susceptibility to combustion, hence amplifying the risk of fire incidents. The objective of this research is to assess the state of fire safety management in retail complexes. This research focuses on conducting a survey to assess fire safety in four high rise retail complexes located in the Mirpur region of Dhaka city. This study aimed to design a checklist methodology for assessing the fire safety standards of retail complexes. The assessment of fire safety levels in shopping malls by the Bangladesh Fire Service and Civil Defense directorate involves assigning varying weights to several parameters related to fire safety management. A study has shown that the majority of shopping malls exhibit characteristics of being high rise and mixed use, hence exacerbating their susceptibility to fires and subsequently increasing the associated fire risk. The majority of the shopping centers that were assessed are situated next to important roads, which are often broad enough to accommodate fire engines. However, a recurring issue arises as these roadways often experience congestion or occupation. Out of the shopping centers surveyed, only Mirpur Shopping Center possesses an emergency exit and some essential fire signs and symbols. Conversely, the remaining three shopping centers, namely Shah Ali Plaza, Muktobangla Shopping Complex, and Shah Ali Shopping Complex, do not have designated emergency exits, signs, and symbols altogether. This deficiency causes these shopping centers to be more vulnerable to fire hazards and reduces their overall level of safety. These shopping malls are extensively encompassed by various electric poles and transformers. The fire safety score of Mirpur Shopping Center is 56.57 (excellent), Shah Ali Plaza is 33.55 (average) and Shah Ali Complex and Muktobangla is 25.44 and 26.75 (poor) respectively. The Fire hazard vulnerability score of Mirpur Shopping Center is 11 (less vulnerable), Shah Ali Plaza is 26 (moderate vulnerable), Muktobangla Shopping Complex is 31 (highly vulnerable) and Shah Ali Shopping Complex is 35 (highly vulnerable). A lot of people are talking about how the fire brigade in our country doesn't have the right tools or the most up-to-date training, and they aren't keeping an eye on safety measures closely enough.","PeriodicalId":331301,"journal":{"name":"International Journal of Engineering Science Technologies","volume":"7 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139252302","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}