The Effect Of Road Profile On The Performance Of A Full Car Suspension Model Ride Comfort., 2024 Borg El Arab Technological University
The Effect Of Road Profile On The Performance Of A Full Car Suspension Model Ride Comfort., Bassem Nashaat Zakher Assistant Professor, Ibrahim Mahmoud El Fahham Professor, Mostafa Mohamed Mohamed Associated Professor, Mohamed Abdelfattah Elgohary Associated Professor
Journal of Engineering Research
A full-car eight-degrees of freedom model is used to investigate the dynamic response of vehicles subjected to different road profiles on ride comfort. Two road profiles are used in this study, which include the effect of the vehicle mass and moment of inertia on the vehicle ride comfort. In the proposed vehicle model, the masses of the tires, damping, and stiffness are variables. Also, the suspension parameters and the location of the centre of gravity of the vehicle body can be changed. The Lumped Mechanical System interface of COMSOL Multiphysics is used to model the tires, the suspension system, and …
Enhancing Radiation Performance Of A 0.18 Μm Cmos 60 Ghz On-Chip Double-Slot Vivaldi Antenna, 2024 Faculty of Engineering Tanta University, Tanta, Egypt.
Enhancing Radiation Performance Of A 0.18 Μm Cmos 60 Ghz On-Chip Double-Slot Vivaldi Antenna, Elsayed Ibrahim Elsaidy Mr., Amr H. Hussein Prof.Dr., Mustafa M. Abd Elnaby Prof. Dr.
Journal of Engineering Research
This paper presents the design of a 60-GHz double-slot Vivaldi antenna (DSVA) using standard 0.18 µm CMOS technology. The antenna's two slots are uniformly excited in both amplitude and phase by a coplanar waveguide (CPW) power divider. A double-Y balun feeding structure is also used to transition from the CPW to the coplanar slot line (CPS). Two techniques are investigated to enhance the antenna's radiation characteristics. The first technique involves incorporating equal corrugations along the edges of the flare aperture, resulting in a significant gain enhancement of 0.9 dBi and an improvement in radiation efficiency by 7%. The second technique …
Developing Paths In Areas Of Distinguished Value Between Preservation And Extinction (A Case Study Of The Railway Axis In The Maadi Area), 2024 kamal mahmoud kamal mohamed elgabalawy
Developing Paths In Areas Of Distinguished Value Between Preservation And Extinction (A Case Study Of The Railway Axis In The Maadi Area), Kamal Mahmoud Elgabalawy
Journal of Engineering Research
Abstract: proportion of the place, and thus the loss of the distinctive general character of the area, which leads to its extinction. These areas are of distinguished value, with all the thought and culture they carry of society over time. Among the areas classified as having distinguished value is the Maadi suburb, which is located in the south of Cairo Governorate, where boundaries and foundations for preserving them have been set through the Central Administration for Studies, Research, and Policies of the National Coordination Organization. The Ministry of Culture, approved by the Supreme Council for Planning and Urban Development by …
Experimental Investigation Of Light-Weight Concrete-Filled Stainless Steel Tube Composite Long Columns, 2024 Faculty of engineering, civil engineering department, menofia University, shebeen El-kom, Egypt
Experimental Investigation Of Light-Weight Concrete-Filled Stainless Steel Tube Composite Long Columns, Nadia Fath Alla, Kamel Kandeel, Mahmoud El-Nagar
Journal of Engineering Research
The main target of this study is to investigate the behavior and performance of long composite circular stainless steel columns filled with light-weight concrete. An experimental study was carried out on four specimens, two of them are long composite circular stainless steel columns with length 1400 mm, diameter 100 mm and thickness of stainless steel tube 2 mm filled with light-weight and normal concrete with strengths 12 and 26 mpa respectively, which denoted by C1400/12 and C1400/26. The other two specimens are short composite circular stainless steel columns with length 500 mm, diameter 100 mm and thickness of stainless steel …
Review Of Wood Drying Technologies, 2024 Mechanical power engineering,Mansoura University
Review Of Wood Drying Technologies, Mohamed Salah Elmetwaly, Lotfy Hassan Rabie Saker, Mohamed Sameh Salem
Journal of Engineering Research
Abstract- This article provides a comprehensive review of drying optimization in data centers by examining the limitations of drying methods and discussing advances proposed by scientists through whom we can provide a comparison between different drying systems with an emphasis on improving energy efficiency and thermal performance. Wood drying under atmospheric pressure has many advantages, including the ability to dry at lower temperatures (by reducing the likelihood of some drying defects), significantly reduced drying times, color preservation, increased energy efficiency, better control of volatile organic compound emissions, and the ability to dry very large cross sections. Previous studies have achieved …
Effect Of Addition Monofilament And Multifilament Polypropylene Fibers On Mechanical Properties Of Concrete At Elevated Temperatures, 2024 Higher Technological Institute-6th of October
Effect Of Addition Monofilament And Multifilament Polypropylene Fibers On Mechanical Properties Of Concrete At Elevated Temperatures, Nourhan Osama Hanafy Dr
Journal of Engineering Research
Some researchers studied the effect of different types of fibers on the strengths of concrete at elevated temperature. However, there are some limitations in the study of the strengths of concrete using different methods of cooling after elevated temperature. Thus, the main objective of this research is to study the mechanical properties of concrete with the addition of 1% polypropylene fibers, featuring different structures, at elevated temperatures and with various cooling methods, compared to normal concrete. An experimental program using three different series of mixes, the first series included normal concrete (control) mix without fibers, the second series included 1% …
Linear Up-Conversion Mixer Based On Capacitive Cross Coupling And Source Follower Feedback For Mm-Wave Systems Using 130nm Cmos, 2024 October 6 University
Linear Up-Conversion Mixer Based On Capacitive Cross Coupling And Source Follower Feedback For Mm-Wave Systems Using 130nm Cmos, Mina Kamal Youssef, Marwa Mansour Abdelfattah, Hala Abdelqader Mansour, Sherif Sayed Hekal
Journal of Engineering Research
This paper presents a linear, high-gain, and wideband up-conversion mixer suitable for millimeter-wave (mm-Wave) applications using 130 nm CMOS technology. The mixer is designed specifically for the K band, focusing on 24 GHz applications in 5G systems. The suggested up-conversion mixer comprises three stages: the input transconductance or intermediate frequency (IF) stage, the switching stage, and the output or radio frequency (RF) stage. The IF stage (transconductance stage) employs a complementary current reuse common gate technique through a dual capacitive cross-coupling (CCC) for improving the conversion gain (CG), and a source follower (SF) feedback to enhance the linearity. The IF …
"Towards A Methodology For Studying The Impact Of Integrating Motion Systems In The External Envelope Of A Building On Natural Lighting Inside The Building– (An Applied Study On A Government School In Greater Cairo)", 2024 معهد أكتوبر العالي للهندسة والتكنولوجيا
"Towards A Methodology For Studying The Impact Of Integrating Motion Systems In The External Envelope Of A Building On Natural Lighting Inside The Building– (An Applied Study On A Government School In Greater Cairo)", Nashwa Youssif
Journal of Engineering Research
يدرك المصمم ما للعناصر البيئية ولا سيما الإضاءة الطبيعية من دور فاعل في الوصول إلى تصميم ناجح يحقق أفضل أداء إستخدامي، فالإضاءة الطبيعية تذهب إلى صميم عمل المعماري فيستعين بها للإيحاء بشكل الفراغات ولونها وملمس سطوحها.
وهناك العديد من الأساليب الحديثة التي تساعد المعماري علي إتخاذ قراراته التصميمية الخاصة بتصميم المبنى وكيفية الإستفادة من الإضاءة الطبيعية داخل المباني، وهذه الأساليب تهدف إلى زيادة إحترام البيئة وتفترض تحسينات في النظم البيئية من العزل الحراري وإستغلال مصادر الطاقة الطبيعية والإهتمام بنظم الإضاءة الطبيعية والمواد البنائية.
وتعد تقنية دمج الأنظمة الحركية بالغلاف الخارجي للمبنى مع الإستفادة من الإضاءة الطبيعية داخل هذا …
Early Autism Detection Using Machine Learning Techniques: A Review, 2024 Tanta University
Early Autism Detection Using Machine Learning Techniques: A Review, Shaimaa Fouad Sharabash, Hany Ali Elghaish
Journal of Engineering Research
Abstract- This article provides a comprehensive literature review on technology-based interventions for Autism Spectrum Disorder (ASD). It emphasizes the challenges in early detection and treatment of ASD, highlighting the spectrum nature of the disorder. The review discusses traditional diagnostic strategies such as behavioural observations, developmental screening and medical testing and goes on to explore advanced machine learning and deep learning models, including SVM, k-nearest neighbours, decision tree and LSTM, for predicting ASD characteristics in toddlers and children. Additionally, recent techniques employing more than ten strategies for ASD detection are summarized and various datasets used in early detection are described. The …
A Mm-Wave Radio Frequency Power Amplifier Based On Transformers Coupling And 2nd Harmonic Termination Network Using 130 Nm Cmos Technology For 5g Applications, 2024 October 6 University
A Mm-Wave Radio Frequency Power Amplifier Based On Transformers Coupling And 2nd Harmonic Termination Network Using 130 Nm Cmos Technology For 5g Applications, Mina Kamal Youssef, Marwa Mansour Abdelfattah, Hala Abdelqader Mansour, Abdelhaleem Abdelnaby Zekry, Sherif Sayed Hekal
Journal of Engineering Research
An efficient and linear power amplifier (PA) for millimeter wave applications using a 130nm CMOS process is presented in this paper. The proposed PA uses transformer coupling for output, inter-stage, and input matching and also utilizes inter-stage inductors to boost RF achievement. The Ansoft high-frequency structure simulator (HFSS) is used to analyze and design the coupling transformers and inter-stage matching inductors to achieve a high coupling coefficient and quality factor over the frequency range of 19 to 29 GHz. The 2nd harmonic termination networks are connected at each stage of the proposed power amplifier to enhance the gain and …
Lessons Learned From Global Experiences Of Urban Competitiveness To Improve The Humanization Of Egyptian Cities, 2024 Menfia university
Lessons Learned From Global Experiences Of Urban Competitiveness To Improve The Humanization Of Egyptian Cities, Asmaa Mostafa Elshamy
Journal of Engineering Research
This study explores the intricate relationship between urban competitiveness and urban humanization in the context of global capital cities and Cairo. By examining key indicators and conducting comprehensive statistical analyses, the study highlights the significance of prioritizing sustainable and inclusive urban development strategies that foster economic growth, social cohesion, environmental sustainability, and cultural preservation. The findings emphasize the critical role of governments and policymakers in shaping vibrant, inclusive, and sustainable urban environments that prioritize the well-being and aspirations of residents. Drawing upon global best practices and lessons learned, the study offers valuable recommendations to enhance the urban competitiveness and humanization …
Global Events As An Approach For Urban Communities’ Development, 2024 Menfia university
Global Events As An Approach For Urban Communities’ Development, Asmaa Mostafa Elshamy
Journal of Engineering Research
The study examined the role of global events in developing urban communities and the challenges facing the global events industry, as Dubai achieved revenue growth of 3.3% in 2024, and allocated a budget of 4% for infrastructure worth 2.6 billion dirhams, and the inflation rate in Dubai reached 2.5% in 2017. 2021, which confirms the efficiency of development in the city based on holding international events. The infrastructure in Qatar also increased by 7%, and the percentage of national income from tourism in Sharm El Sheikh reached 11.8%
The study clarifies the role of global activities as an input to …
Delta Airlines Company Analysis, 2024 University of North Dakota
Delta Airlines Company Analysis, Brendan Aug
Aviation Student Publications
No abstract provided.
Ground Stop Analysis, 2024 University of North Dakota
Ground Stop Analysis, Brendan Aug
Aviation Student Publications
This study intends to analyze a selection of flight data from 2021 and 2022 from UND Aerospace to determine how much time is spent in stopped on the ground, with the engines running, prior to takeoff, during training flights. This study also hopes to explore some of the factors that may cause extended ground stop times and determine if there are any areas that warrant further study in the future.
Basic Psychological Needs Satisfaction And Well-Being Among Seafarers: An Investigation Of Interaction Effects Through The Lens Of Self-Determination Theory, 2024 Department of Shipping and Transportation Management, National Taiwan Ocean University
Basic Psychological Needs Satisfaction And Well-Being Among Seafarers: An Investigation Of Interaction Effects Through The Lens Of Self-Determination Theory, Nong Vuong Phi, Kung Don Ye, Feng Ming Tsai, Hsiao Chao Hsieh, Shiou-Yu Chen
Journal of Marine Science and Technology
Enhancing employee well-being is a primary goal for enterprise sustainable development. Although seafarers represent a major human resource in the maritime industry, the distinctive demands of their profession often compel them to compromise on certain elements in fulfilling their basic psychological needs, thereby contributing to mental health challenges. Recently, COVID-19 and its associated border control measures have prolonged the voyages of seafarers, drawing public attention to the topic of seafarer well-being. In this study, self-determination theory was used to explore the effects of autonomy, competence, and relatedness as fundamental psychological needs on seafarer well-being. After the independent effects of these …
Digital Assessments For Children And Adolescents With Adhd: A Scoping Review, 2024 Chapman University
Digital Assessments For Children And Adolescents With Adhd: A Scoping Review, Franceli L. Cibrian, Elissa M. Monteiro, Kimberley D. Lakes
Engineering Faculty Articles and Research
Introduction: In spite of rapid advances in evidence-based treatments for attention deficit hyperactivity disorder (ADHD), community access to rigorous gold-standard diagnostic assessments has lagged far behind due to barriers such as the costs and limited availability of comprehensive diagnostic evaluations. Digital assessment of attention and behavior has the potential to lead to scalable approaches that could be used to screen large numbers of children and/or increase access to high-quality, scalable diagnostic evaluations, especially if designed using user-centered participatory and ability-based frameworks. Current research on assessment has begun to take a user-centered approach by actively involving participants to ensure the development …
2024 Gateway Magazine, 2024 Michigan Technological University
2024 Gateway Magazine, College Of Computing, Michigan Technological University
College of Computing Annual Magazines
Table of Contents
- 50 Years of Computer Science at Michigan Tech
- Data Science for a Changing Planet
- Healthcare Transformed
- Mechatronics Matters
- Powered by Michigan Tech Talent
- Esports: Bringing Everything Great about Sports to More People
- The Michigander Scholars Program: Electrifying Careers in Michigan
- College of Computing News
Pozzolanic Reactivity Of Carbonated High-Calcium Fly Ash: A Mechanism Study, 2024 Missouri University of Science and Technology
Pozzolanic Reactivity Of Carbonated High-Calcium Fly Ash: A Mechanism Study, Gao Deng, Nannan Zhang, Wenyu Liao, Hongyan Ma, Yongjia He, Linnu Lu, Lingyu Chi
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
This research investigates the impact of accelerated carbonation treatment on the pozzolanic reactivity of high-calcium fly ash (HFA) by monitoring the reaction heat of HFA/carbonated HFA (CFA)-calcium hydroxide (CH) blends and elucidates the underlying factors influencing the pozzolanic reactivity. The results indicate that in HFA/CFA-CH blends, CFA exhibits a comparable pozzolanic reactivity to that of HFA. This is attributed to the carbonation products accelerating the formation of MonoCarb aluminate (main) and C-S-H, compensating for the reduced heat resulting from the diminished highly reactive components after the carbonation treatment. Additionally, the increased surface area due to carbonation treatment is favorable for …
Study Of The Synthesis Mechanism And Some Properties Of Oligomers Based On Epichlorohydrin And Diphenylguanidine, 2024 Tashkent State Technical University, Tashkent city, Republic of Uzbekistan, Professor, DSc, i.ravshan1972@mail.ru, https://orcid.org/0000-0002-1130-9228;
Study Of The Synthesis Mechanism And Some Properties Of Oligomers Based On Epichlorohydrin And Diphenylguanidine, Rovshan Israilovich Ismailov, Normuhamad Edgarov, Alisher Israilovich Ismailov
Technical science and innovation
In this work, the synthesis and the scheme for obtaining an oligomer based on epiiodhydrin with diphenylguanidine were studied, the proportions of epiiodhydrin in the initial mixture, the yield of oligomers, and the reduced viscosity were studied. The results of spectroscopic and elemental analyzes are obtained, which show that changes in the ratio of monomers have almost no effect on the iodine content in the oligomer. This is apparently due to the fact that epiiodhydrin is much more active in reactions than amino compounds. By studying the degree of conversion on the viscosity of the oligomerization products, the effects on …
Study Of The Physical-Chemical Properties Of Chitosan Synthesized By The Cryogenic Method From Apis Mellifera Bees, 2024 Tashkent State Technical University, Tashkent city, Republic of Uzbekistan, PhD student, isomitdinovadilnoza231@gmail.com, https://orcid.org/0009-0003-7338-8798;
Study Of The Physical-Chemical Properties Of Chitosan Synthesized By The Cryogenic Method From Apis Mellifera Bees, Dilnoza Sohibovna Isomitdinova, Gulnora Akmalovna Ikhtiyarova, Jahongir Mustaqim O’G’Li Sharopov
Technical science and innovation
Chitosan was synthesized from Apis Mellifera dead bees by traditional and cryogenic methods, and the degree of deacetylation, viscosity, and molecular mass of the synthesized sample was studied. Chitosan was synthesized by deacetylation of chitin under cryogenic conditions. NaOH concentration 40%, temperature 90 ± 3 °C, time 120 min. The degree of deacetylation, and molecular mass was determined using an Ubbelode viscometer. DDA was determined by conductometric titration under standard conditions. The degree of deacetylation of Apis Mellifera chitosan was 87%. synthesized by cryogenic method DDA of chitosan was 83% synthesized by traditional method. Conducting the synthesis in liquid nitrogen …