Pub Date : 2024-07-01DOI: 10.31026/j.eng.2024.07.07
Zainab A. Mahdi, I. Muhsin
Today's world is witnessing continuous development, particularly in the construction sector, which is meeting the rising population and their need for essential facilities; this is one of the reasons why construction is witnessing such development. Different crises significantly affect this sector, including the financial crisis in different countries. This paper identifies the financial crises, their categories, and the reasons for appearing them. Inflation, currency exchange fluctuations, and the drop in global oil prices are the most important reasons for the emergence of external financial crises, especially in Iraq, which considers oil an important economic resource for its budget. The unexpected global financial events led to an economic collapse that affected the construction sector. Many large projects in Iraq have been put on hold as a result of these conditions due to the country's lack of resources to address these crises. This paper aims to study and identify potential crises and potential responses and mitigation strategies for each crisis stage.
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Pub Date : 2024-07-01DOI: 10.31026/j.eng.2024.07.06
Hala Jassim Mohammed
في السنوات الأخيرة، أدى التقدم التكنولوجي في إنترنت الأشياء (IoT) وأجهزة الاستشعار الذكية إلى فتح اتجاهات جديدة وإعطاء حلول عملية في مختلف قطاعات الحياة. يتم التعرف على إنترنت الأشياء كتنولوجيا حديثة تربط بين مختلف انواع الشبكات. تم تحسين أنواع مختلفة من قطاعات الرعاية الصحية في المجال الطبي بناءً على هذه التكنولوجيا. أحد هذه القطاعات الهامة هو نظام مراقبة الصحة (HMS). تعتبر مراقبة المريض عن بعد لاسلكيًا وبتكلفة منخفضة أمرًا بالغ الأهمية في هذا المجال. في هذا العمل، تم اقتراح نظام مراقبة صحة المريض في الوقت الحقيقي وبتكلفة منخفضة. يتم دمج أنواع مختلفة من أجهزة الاستشعار في شبكة اتصالات لاسلكية لجمع الإشارات الفسيولوجية للمريض عن بعد وإرسالها إلى المختص في أسرع وقت ممكن. يتكون االنظام المقترح من عدد من أجهزة الاستشعار الذكية التي تقيس معلمات مختلفة وهي: عدد نبضات القلب بالدقيقة، درجة حرارة الجسم، وSPO2 (تشبع الأكسجين). تُستخدم هذه الحساسات لحساب معدل ضربات قلب المريض ودرجة حرارة الجسم ونسبة تشبع الأكسجين للمريض على التوالي. يتم عرض حالة المريض اما على شاشة OLED اوباستخدام تطبيق Blynk. في هذا النظام نستخدم لوحة Raspberry Pi Pico W كوحدة تحكم دقيقة مع مفهوم الحوسبة السحابية. بحيث يتم استخدام لوحة Raspberry Pi Pico W لنقل البيانات لاسلكيًا على تقنية إنترنت الأشياء باستخدام تطبيق Blynk. يتم نقل المعلمات الحيوية للمريض عن بعد عبر شبكة Wi-Fi مما يساعد في مراقبة المعلومات الصحية للمرضى لاسلكيًا وفي الوقت الحقيقي. من خلال النتائج التي تم الحصول عليها وجد ان البيانات التي تم الحصول عليها من المريض يتم نقلها بسرعة كبيرة ويمكننا فحص العديد من المرضى عن بعد من خلال الحفاظ على مسافة مناسبة مع المرضى. تم مقارنة النظام المقترح مع الانظمة الموجودة عن طريق قياس العلامات الحيوية لعدد من الأشخاص وأظهرت النتائج أن البيانات التي تم الحصول عليها من الأشخاص متقاربة جدا. علاوة على ذلك، فقد وجد أن النظام المقترح ذو تكلفة منخفضة مقارنة بالأجهزة الأخرى المتوفرة تجاريا.
近年来，物联网（IoT）和智能传感器的技术进步为各行各业的生活开辟了新的方向，提供了实用的解决方案。物联网是公认的连接各类网络的现代技术。基于这项技术，医疗领域中不同类型的保健部门都得到了优化。其中一个重要领域就是健康监测系统（HMS）。无线和低成本的远程病人监测在这一领域至关重要。在这项工作中，提出了一种实时、低成本的病人健康监测系统。不同类型的传感器被集成到一个无线通信网络中，以远程收集病人的生理信号，并尽快将其发送给专科医生。拟议的系统由多个智能传感器组成，可测量不同的参数，即每分钟心率、体温和 SPO2（血氧饱和度）。这些传感器分别用于计算病人的心率、体温和血氧饱和度。病人的状态可通过 OLED 屏幕或 Blynk 应用程序显示。在本系统中，我们使用 Raspberry Pi Pico W 板作为微控制器，并采用了云计算的概念。树莓派 Pico W 板用于使用 Blynk 应用程序在物联网上无线传输数据。病人的生命参数通过 Wi-Fi 进行远程传输，这有助于以无线方式实时监测病人的健康信息。从获得的结果来看，从病人那里获得的数据传输非常快，我们可以通过与病人保持适当的距离来远程检查许多病人。通过测量一些人的生命体征，将拟议系统与现有系统进行了比较，结果显示，从这些人那里获得的数据非常接近。此外，与其他市售设备相比，拟议的系统成本较低。
{"title":"IoT-Based Low-Cost Smart Health Monitoring System using Raspberry Pi Pico W and Blynk Application","authors":"Hala Jassim Mohammed","doi":"10.31026/j.eng.2024.07.06","DOIUrl":"https://doi.org/10.31026/j.eng.2024.07.06","url":null,"abstract":"في السنوات الأخيرة، أدى التقدم التكنولوجي في إنترنت الأشياء (IoT) وأجهزة الاستشعار الذكية إلى فتح اتجاهات جديدة وإعطاء حلول عملية في مختلف قطاعات الحياة. يتم التعرف على إنترنت الأشياء كتنولوجيا حديثة تربط بين مختلف انواع الشبكات. تم تحسين أنواع مختلفة من قطاعات الرعاية الصحية في المجال الطبي بناءً على هذه التكنولوجيا. أحد هذه القطاعات الهامة هو نظام مراقبة الصحة (HMS). تعتبر مراقبة المريض عن بعد لاسلكيًا وبتكلفة منخفضة أمرًا بالغ الأهمية في هذا المجال. في هذا العمل، تم اقتراح نظام مراقبة صحة المريض في الوقت الحقيقي وبتكلفة منخفضة. يتم دمج أنواع مختلفة من أجهزة الاستشعار في شبكة اتصالات لاسلكية لجمع الإشارات الفسيولوجية للمريض عن بعد وإرسالها إلى المختص في أسرع وقت ممكن. يتكون االنظام المقترح من عدد من أجهزة الاستشعار الذكية التي تقيس معلمات مختلفة وهي: عدد نبضات القلب بالدقيقة، درجة حرارة الجسم، وSPO2 (تشبع الأكسجين). تُستخدم هذه الحساسات لحساب معدل ضربات قلب المريض ودرجة حرارة الجسم ونسبة تشبع الأكسجين للمريض على التوالي. يتم عرض حالة المريض اما على شاشة OLED اوباستخدام تطبيق Blynk. في هذا النظام نستخدم لوحة Raspberry Pi Pico W كوحدة تحكم دقيقة مع مفهوم الحوسبة السحابية. بحيث يتم استخدام لوحة Raspberry Pi Pico W لنقل البيانات لاسلكيًا على تقنية إنترنت الأشياء باستخدام تطبيق Blynk. يتم نقل المعلمات الحيوية للمريض عن بعد عبر شبكة Wi-Fi مما يساعد في مراقبة المعلومات الصحية للمرضى لاسلكيًا وفي الوقت الحقيقي. من خلال النتائج التي تم الحصول عليها وجد ان البيانات التي تم الحصول عليها من المريض يتم نقلها بسرعة كبيرة ويمكننا فحص العديد من المرضى عن بعد من خلال الحفاظ على مسافة مناسبة مع المرضى. تم مقارنة النظام المقترح مع الانظمة الموجودة عن طريق قياس العلامات الحيوية لعدد من الأشخاص وأظهرت النتائج أن البيانات التي تم الحصول عليها من الأشخاص متقاربة جدا. علاوة على ذلك، فقد وجد أن النظام المقترح ذو تكلفة منخفضة مقارنة بالأجهزة الأخرى المتوفرة تجاريا.","PeriodicalId":15716,"journal":{"name":"Journal of Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141709043","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 : 2024-07-01DOI: 10.31026/j.eng.2024.07.10
Husam Ahmed Al-Shiblawi, S. Laffta
جاءت فكرة البحث من اهمية موضوع استهلاك الطاقة في المدن حيث تواجه مدن العالم بشكل عام والمدن العراقية بشكل خاص تحديات بيئية كبيرة من تصاعد نسبة الانبعاثات الكربونية مما يستوجب ايجاد الحلول اللازمة من خلال فهم عملية مدخلات ومخرجات المدينة المتمثلة بعملية الايض الحضري والغازات الدفيئة وانواع مصادر الطاقة وقياس بصمة الطاقة لمنطقة الدراسة وعلاقة استعمالات الارض في استهلاك الطاقة وتوصل البحث الى عرض النتائج التي تعطي مؤشر الى زيادة مستمرة في استهلاك الطاقة في المدن العراقية وتباين بين استعمالات الارض المختلفة من حيث استهلاك الطاقة والموارد ويفرض البحث ان اعتماد استراتيجيات تخطيطة مستدامة يمكن ان تقلل من ذلك الاستهلاك وبالتالي تقلل من بصمة الطاقة والانبعاثات الكربونية.
{"title":"Urban Metabolism of Energy Consumption in Cities","authors":"Husam Ahmed Al-Shiblawi, S. Laffta","doi":"10.31026/j.eng.2024.07.10","DOIUrl":"https://doi.org/10.31026/j.eng.2024.07.10","url":null,"abstract":"جاءت فكرة البحث من اهمية موضوع استهلاك الطاقة في المدن حيث تواجه مدن العالم بشكل عام والمدن العراقية بشكل خاص تحديات بيئية كبيرة من تصاعد نسبة الانبعاثات الكربونية مما يستوجب ايجاد الحلول اللازمة من خلال فهم عملية مدخلات ومخرجات المدينة المتمثلة بعملية الايض الحضري والغازات الدفيئة وانواع مصادر الطاقة وقياس بصمة الطاقة لمنطقة الدراسة وعلاقة استعمالات الارض في استهلاك الطاقة وتوصل البحث الى عرض النتائج التي تعطي مؤشر الى زيادة مستمرة في استهلاك الطاقة في المدن العراقية وتباين بين استعمالات الارض المختلفة من حيث استهلاك الطاقة والموارد ويفرض البحث ان اعتماد استراتيجيات تخطيطة مستدامة يمكن ان تقلل من ذلك الاستهلاك وبالتالي تقلل من بصمة الطاقة والانبعاثات الكربونية.","PeriodicalId":15716,"journal":{"name":"Journal of Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141710718","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 : 2024-07-01DOI: 10.31026/j.eng.2024.07.02
Karrar A. Jawad, Alaa D. Salman
A partially tied piled foundation raft where both horizontal and vertical movements will be tamed. Interfacing RSTP changes are in structural dynamics and the way the forces are distributed. Nevertheless, the overall seismic behavior of this type of foundation in medium dry sand soil links to the pile raft foundation system with partial structural connection has not been studied adequately. To fill this gap we experimentally tested ten pile and group pile layouts in the laboratory in order to explore the interaction of the cushion layer with piles at different spacing. These tests concern the displacement mechanism of the raft foundation and the stressing change of the RSTP layers that occur during earthquakes. The results showed that using RSTP layers helps to minimize the variations in displacement between patterns with connected piles and those with disconnected piles when subjected to shaking loads. The pattern 1DR6cm showed a high settlement reduction ratio compared with 1DR2cm. Pattern 2C2D appeared less reduction in the vertical displacement. More significant displacements and rotating behavior anticipate lateral shaking due to reduce the number of connected piles for pattern 1C4D compare with pattern 4C1D. The pattern 3C6DHR2cm decreased the vertical displacement by 48.4% using one layer of RSTP. Using three layers of RSTP contributes to reducing the displacement by 36.4%. The number of the piles in a connection condition with the piled raft and the cushion thickness belongings on the strain deformation values.
{"title":"Effect of Rubber Scrap Tire Pads on the Behavior of Partially Connected Pile Raft Foundation System Subjected to Dynamic Loading","authors":"Karrar A. Jawad, Alaa D. Salman","doi":"10.31026/j.eng.2024.07.02","DOIUrl":"https://doi.org/10.31026/j.eng.2024.07.02","url":null,"abstract":"A partially tied piled foundation raft where both horizontal and vertical movements will be tamed. Interfacing RSTP changes are in structural dynamics and the way the forces are distributed. Nevertheless, the overall seismic behavior of this type of foundation in medium dry sand soil links to the pile raft foundation system with partial structural connection has not been studied adequately. To fill this gap we experimentally tested ten pile and group pile layouts in the laboratory in order to explore the interaction of the cushion layer with piles at different spacing. These tests concern the displacement mechanism of the raft foundation and the stressing change of the RSTP layers that occur during earthquakes. The results showed that using RSTP layers helps to minimize the variations in displacement between patterns with connected piles and those with disconnected piles when subjected to shaking loads. The pattern 1DR6cm showed a high settlement reduction ratio compared with 1DR2cm. Pattern 2C2D appeared less reduction in the vertical displacement. More significant displacements and rotating behavior anticipate lateral shaking due to reduce the number of connected piles for pattern 1C4D compare with pattern 4C1D. The pattern 3C6DHR2cm decreased the vertical displacement by 48.4% using one layer of RSTP. Using three layers of RSTP contributes to reducing the displacement by 36.4%. The number of the piles in a connection condition with the piled raft and the cushion thickness belongings on the strain deformation values. ","PeriodicalId":15716,"journal":{"name":"Journal of Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141703766","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 : 2024-07-01DOI: 10.31026/j.eng.2024.07.03
Alyaa Jumaah Hadi, Thamer Ahmed Mohammed
Dams are mega structures that retain huge volumes of water and their safety is important to national security, economy, and public interest. In this study, the types of regular measurements with their recorded value for Haditha Dam were checked for compliance with the standard international surveillance and monitoring procedures such as the procedures of the International Commission on Large Dams (ICOLD), the United States Bureau of Reclamation (USBR)and other to ensure safe dam operation and to avoid the scenario of the Derna Dam break, in Libya that occurred in September 2023. The result shows that the highest recorded settlement was found at station 41 on the left side of the dam body exceeding the design criteria (219 mm) by about 51 %, the frequency of measurement does not comply with the required international standards. There are 7 cells of pore pressure that exceeded the design criteria and the greatest percentage of exceedance was 21.57 % was found at pore pressure number 995. For piezometer reading, the percentage exceedance was 9.1% and it was found on the left side at piezometers number 58-8. The highest percentage of movement 62 % was found at join meter device number D18. The recorded seepage rate through the dam was found within the permitted limits. The visual inspection followed at Haditha Dam was not according to the standard required inspection.
{"title":"Compliance of Haditha Dam in Iraq to the International Standards for Surveillance and Monitoring","authors":"Alyaa Jumaah Hadi, Thamer Ahmed Mohammed","doi":"10.31026/j.eng.2024.07.03","DOIUrl":"https://doi.org/10.31026/j.eng.2024.07.03","url":null,"abstract":"Dams are mega structures that retain huge volumes of water and their safety is important to national security, economy, and public interest. In this study, the types of regular measurements with their recorded value for Haditha Dam were checked for compliance with the standard international surveillance and monitoring procedures such as the procedures of the International Commission on Large Dams (ICOLD), the United States Bureau of Reclamation (USBR)and other to ensure safe dam operation and to avoid the scenario of the Derna Dam break, in Libya that occurred in September 2023. The result shows that the highest recorded settlement was found at station 41 on the left side of the dam body exceeding the design criteria (219 mm) by about 51 %, the frequency of measurement does not comply with the required international standards. There are 7 cells of pore pressure that exceeded the design criteria and the greatest percentage of exceedance was 21.57 % was found at pore pressure number 995. For piezometer reading, the percentage exceedance was 9.1% and it was found on the left side at piezometers number 58-8. The highest percentage of movement 62 % was found at join meter device number D18. The recorded seepage rate through the dam was found within the permitted limits. The visual inspection followed at Haditha Dam was not according to the standard required inspection.","PeriodicalId":15716,"journal":{"name":"Journal of Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141693912","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 : 2024-07-01DOI: 10.31026/j.eng.2024.07.01
Basil Akinnuli, Micheal Adeyeri, Ayodeji Aninkan
After considering engineering, economics, and supply due-date strategic decisions as the death knell for the selection of industrial machinery suppliers, the technical capability of the suppliers is one of the strategic decisions for consideration. To achieve this, necessary attributes of this strategic decision were identified in this study. These attributes include the quality of mechanics used, quality of staff used, level of research work done, level of quality control, and quality of companies patronizing the vendor. They were modelled and integrated (logic) for decision-making and then evaluated using a case study of procuring a Cocoa Liquor Press for extracting butter from the cocoa liquor using three vendors V1, V2, and V3 that passed the three strategic decision death knells. The overall performance indices of all three vendors as per their strength on the considered strategic decision (technical quality of the supplier) are 1.71, 1.66, and 1.63 which are 43.2%, 33.25%, and 32.6% respectively by percentage. While their weaknesses are 3.28, 3.34, and 3.37 which are 65.6%, 66.8%, and 67.2%. Vendor one (V1) having a performance index of 1.71 strength and 3.28 weakness (43.2% strength and 65.8% weakness) post engineering and economic consideration death-knell was found to be best suitable and was selected.
{"title":"Modelling Technical Capacity of Industrial Machines Suppliers’ Selection Post Engineering and Economic Considerations","authors":"Basil Akinnuli, Micheal Adeyeri, Ayodeji Aninkan","doi":"10.31026/j.eng.2024.07.01","DOIUrl":"https://doi.org/10.31026/j.eng.2024.07.01","url":null,"abstract":"After considering engineering, economics, and supply due-date strategic decisions as the death knell for the selection of industrial machinery suppliers, the technical capability of the suppliers is one of the strategic decisions for consideration. To achieve this, necessary attributes of this strategic decision were identified in this study. These attributes include the quality of mechanics used, quality of staff used, level of research work done, level of quality control, and quality of companies patronizing the vendor. They were modelled and integrated (logic) for decision-making and then evaluated using a case study of procuring a Cocoa Liquor Press for extracting butter from the cocoa liquor using three vendors V1, V2, and V3 that passed the three strategic decision death knells. The overall performance indices of all three vendors as per their strength on the considered strategic decision (technical quality of the supplier) are 1.71, 1.66, and 1.63 which are 43.2%, 33.25%, and 32.6% respectively by percentage. While their weaknesses are 3.28, 3.34, and 3.37 which are 65.6%, 66.8%, and 67.2%. Vendor one (V1) having a performance index of 1.71 strength and 3.28 weakness (43.2% strength and 65.8% weakness) post engineering and economic consideration death-knell was found to be best suitable and was selected.","PeriodicalId":15716,"journal":{"name":"Journal of Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141694083","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 : 2024-07-01DOI: 10.31026/j.eng.2024.07.08
Nadine Adnan Shaaban, G. Jawad
A compact microstrip six-port reflectometer (SPR) with extended bandwidth is proposed in this paper. The design is based on using 16-dB multi-section coupled line directional couplers and a multi-section 3-dB Wilkinson power divider operating from 1 to 6 GHz. The proposed SPR employs only two calibration standards: a matched load and an open load. As compared to other dielectric substrates, fabricating the proposed SPR involves using a low-cost (FR4) substrate. A novel algorithm is also proposed to estimate the complex reflection coefficient over the frequency ranges at which the standard performance of the circuit components is not fully satisfied. The new algorithm is based on the circles’ intersection points, which have been derived from basic SPR equations, to estimate the complex reflection coefficient. To validate the SPR performance, a multiband microstrip patch antenna has been measured and the resulted reflection coefficient is compared with those obtained using a vector network analyzer (VNA). Results show that the proposed SPR provides a good estimation of the complex reflection coefficient within the frequency range of 1 GHz to 8 GHz. Owing to its compact size and ease of fabrication, the proposed reflectometer is suitable for various microwave broadband applications.
{"title":"Design and Implementation of a Microstrip Six-Port Reflectometer (SPR) with Enhanced Bandwidth","authors":"Nadine Adnan Shaaban, G. Jawad","doi":"10.31026/j.eng.2024.07.08","DOIUrl":"https://doi.org/10.31026/j.eng.2024.07.08","url":null,"abstract":"A compact microstrip six-port reflectometer (SPR) with extended bandwidth is proposed in this paper. The design is based on using 16-dB multi-section coupled line directional couplers and a multi-section 3-dB Wilkinson power divider operating from 1 to 6 GHz. The proposed SPR employs only two calibration standards: a matched load and an open load. As compared to other dielectric substrates, fabricating the proposed SPR involves using a low-cost (FR4) substrate. A novel algorithm is also proposed to estimate the complex reflection coefficient over the frequency ranges at which the standard performance of the circuit components is not fully satisfied. The new algorithm is based on the circles’ intersection points, which have been derived from basic SPR equations, to estimate the complex reflection coefficient. To validate the SPR performance, a multiband microstrip patch antenna has been measured and the resulted reflection coefficient is compared with those obtained using a vector network analyzer (VNA). Results show that the proposed SPR provides a good estimation of the complex reflection coefficient within the frequency range of 1 GHz to 8 GHz. Owing to its compact size and ease of fabrication, the proposed reflectometer is suitable for various microwave broadband applications.","PeriodicalId":15716,"journal":{"name":"Journal of Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141694528","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 : 2024-07-01DOI: 10.31026/j.eng.2024.07.12
Shaymaa Hasan Taher, Z. Alkaissi
Travel-time reliability is a crucial performance measure for transportation systems. This research aims to estimate travel time and predict delay time on three routes in Baghdad city using GPS devices: Safi Al-Den Street, Palestine Street, and the Army Channel Expressway. The study was conducted northward from 7:00 a.m. to 9:00 p.m. Reliability indices for the first and second routes with signalized intersections, including buffer index, travel time index, and 95th percentile travel time, were determined. Safi Al-Den Street's buffer time index for links 1 to 3 is approximately 44.75%, 39.87%, and 39.12%, respectively. The highest travel time index value is observed in link 3 at 8.9%. Link 1 has the longest 95% travel time at 659 seconds. Palestine Street shows a high buffer time index in links 1 and 3 at around 32.39% and 24.65%, respectively. The highest travel time index is in link 3 at 6.84%, attributed to congestion from increased educational, medical, and commercial trips. The longest 95% travel time is 430 seconds in link 7. This study offers valuable insights into the reliability of travel time in urban corridors in Baghdad city, aiding transportation planners and engineers in making informed decisions on traffic management, infrastructure development, and policy-making.
{"title":"Analysis the Reliability of Travel Time in Urban Corridors in Baghdad City","authors":"Shaymaa Hasan Taher, Z. Alkaissi","doi":"10.31026/j.eng.2024.07.12","DOIUrl":"https://doi.org/10.31026/j.eng.2024.07.12","url":null,"abstract":"Travel-time reliability is a crucial performance measure for transportation systems. This research aims to estimate travel time and predict delay time on three routes in Baghdad city using GPS devices: Safi Al-Den Street, Palestine Street, and the Army Channel Expressway. The study was conducted northward from 7:00 a.m. to 9:00 p.m. Reliability indices for the first and second routes with signalized intersections, including buffer index, travel time index, and 95th percentile travel time, were determined. Safi Al-Den Street's buffer time index for links 1 to 3 is approximately 44.75%, 39.87%, and 39.12%, respectively. The highest travel time index value is observed in link 3 at 8.9%. Link 1 has the longest 95% travel time at 659 seconds. Palestine Street shows a high buffer time index in links 1 and 3 at around 32.39% and 24.65%, respectively. The highest travel time index is in link 3 at 6.84%, attributed to congestion from increased educational, medical, and commercial trips. The longest 95% travel time is 430 seconds in link 7. This study offers valuable insights into the reliability of travel time in urban corridors in Baghdad city, aiding transportation planners and engineers in making informed decisions on traffic management, infrastructure development, and policy-making.","PeriodicalId":15716,"journal":{"name":"Journal of Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141695944","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 : 2024-07-01DOI: 10.31026/j.eng.2024.07.05
Sally Hashim Mohammed, N. Fawzi
Geopolymer concrete has been proposed to minimize carbon dioxide emissions related to the cement production industry. This environmentally friendly material consists of industry waste materials activated chemically by an activation solution. In this study, the geopolymer mortar has been designed with 70% fly ash and 30% metakaolin. Hydroxide sodium in 14 molar concentrations blended with sodium silicate in a 2.5:1 ratio was used as the activation solution. Rice husk fibers were added as reinforcement in (1%, 1.5%, and 2%), and waste paper (paper pulp and paper ash) was added in (1%, 2%, and 5%) by volume of cementitious material. The geopolymer mortar samples underwent a curing process through exposure to a temperature of 60°C in an oven for 24 hours. The findings indicate that the samples reinforced with 2% rice husk fibers exhibited the most significant improvement in compressive strength, with 59% and 55% increases after 7 and 28 days of curing, respectively. In general, using waste paper and rice husk fibers significantly enhanced the compressive strength of geopolymer mortar.
{"title":"Compressive Strength of Geopolymer Mortar Reinforced with Rice Husk Fibers","authors":"Sally Hashim Mohammed, N. Fawzi","doi":"10.31026/j.eng.2024.07.05","DOIUrl":"https://doi.org/10.31026/j.eng.2024.07.05","url":null,"abstract":"Geopolymer concrete has been proposed to minimize carbon dioxide emissions related to the cement production industry. This environmentally friendly material consists of industry waste materials activated chemically by an activation solution. In this study, the geopolymer mortar has been designed with 70% fly ash and 30% metakaolin. Hydroxide sodium in 14 molar concentrations blended with sodium silicate in a 2.5:1 ratio was used as the activation solution. Rice husk fibers were added as reinforcement in (1%, 1.5%, and 2%), and waste paper (paper pulp and paper ash) was added in (1%, 2%, and 5%) by volume of cementitious material. The geopolymer mortar samples underwent a curing process through exposure to a temperature of 60°C in an oven for 24 hours. The findings indicate that the samples reinforced with 2% rice husk fibers exhibited the most significant improvement in compressive strength, with 59% and 55% increases after 7 and 28 days of curing, respectively. In general, using waste paper and rice husk fibers significantly enhanced the compressive strength of geopolymer mortar. ","PeriodicalId":15716,"journal":{"name":"Journal of Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141708543","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 : 2024-07-01DOI: 10.31026/j.eng.2024.07.11
Marwa Mohammad Obaid, M. Saleh
أبرزت حالات الاقتحام الأخيرة الحاجة إلى أنظمة الكشف عن اقتحام الشبكة في مقاومة هجمات الشبكة الأكثر تعقيدًا، مع نمو الاتصال بالإنترنت وحجم حركة المرور. كثيرا ما تستخدم أنظمة الكشف عن التسلل تقنيات مثل التعرف على الأنماط واستخراج البيانات لتحديد أنشطة الشبكة كالمعتاد أو الهجوم. نظام الكشف عن التسلل (IDS) هو تقنية نشطة للكشف عن التسلل تقوم تلقائيًا باكتشاف وتصنيف عمليات الاقتحام والاعتداء وانتهاكات السياسة الأمنية على مستوى الشبكة والمضيف. يشير بحثنا إلى أن طرق التعلم الآلي مثل Naiseve Bayes (NB) و K-Nearest Neighbor (KNN) و Decision Tree (DT) قد تعزز فعالية نظام الكشف عن التطفل. دقة الكشف والدقة F1-score والاستدعاء ووقت التنفيذ هي مؤشرات أداء تستخدم لقياس الفعالية. لزيادة كفاءة الكشف، والدقة، وتقليل وقت التنفيذ، تم تطبيق مناهج اختيار الميزات بما في ذلك ANOVA و Mutual Information (MI) و chi-squared (CH-2)، وكانت كل هذه الاستراتيجيات فعالة. عند استخدام ANOVA بنسبة 10٪ من الميزات، تحصل جميع المصنفين على أكبر نتيجة، بدقة 99.99٪ و DT في وقت 0.0089ms
{"title":"Efficient Intrusion Detection Through the Fusion of AI Algorithms and Feature Selection Methods","authors":"Marwa Mohammad Obaid, M. Saleh","doi":"10.31026/j.eng.2024.07.11","DOIUrl":"https://doi.org/10.31026/j.eng.2024.07.11","url":null,"abstract":"أبرزت حالات الاقتحام الأخيرة الحاجة إلى أنظمة الكشف عن اقتحام الشبكة في مقاومة هجمات الشبكة الأكثر تعقيدًا، مع نمو الاتصال بالإنترنت وحجم حركة المرور. كثيرا ما تستخدم أنظمة الكشف عن التسلل تقنيات مثل التعرف على الأنماط واستخراج البيانات لتحديد أنشطة الشبكة كالمعتاد أو الهجوم. نظام الكشف عن التسلل (IDS) هو تقنية نشطة للكشف عن التسلل تقوم تلقائيًا باكتشاف وتصنيف عمليات الاقتحام والاعتداء وانتهاكات السياسة الأمنية على مستوى الشبكة والمضيف. يشير بحثنا إلى أن طرق التعلم الآلي مثل Naiseve Bayes (NB) و K-Nearest Neighbor (KNN) و Decision Tree (DT) قد تعزز فعالية نظام الكشف عن التطفل. دقة الكشف والدقة F1-score والاستدعاء ووقت التنفيذ هي مؤشرات أداء تستخدم لقياس الفعالية. لزيادة كفاءة الكشف، والدقة، وتقليل وقت التنفيذ، تم تطبيق مناهج اختيار الميزات بما في ذلك ANOVA و Mutual Information (MI) و chi-squared (CH-2)، وكانت كل هذه الاستراتيجيات فعالة. عند استخدام ANOVA بنسبة 10٪ من الميزات، تحصل جميع المصنفين على أكبر نتيجة، بدقة 99.99٪ و DT في وقت 0.0089ms","PeriodicalId":15716,"journal":{"name":"Journal of Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141704480","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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