Digital Commons Network^™

Stability Chart Of Generalized Bessel Equation, Mohamed Elborhamy

Journal of Engineering Research

Stability analysis, due to its importance in dynamic analysis of appliedsystems, becomes very widely topic in real-world problems associated with significant effects in all applications of engineering and appliedsciences. Several contributions have been done by various authors onstability analysis of autonomous and non-autonomous systems to obtain interesting and attractive results. In these aforementioned works, and sofar, the Lyapunov methods (first and second) become the main nerve togive suitable criteria that guaranteed the stability of the dynamicalsystems,In this article, it is aimed to look for a semi-analytical relation between the eigenvalue and the order of generalized Bessel differential equation using the …

Socio-Economic Impact Of Touristic Development On Surrounding Local Communities- Case Study Delta Egypt, Sara Alsaied Khalil Elmorsy, Salwa Mahmoud Eladawy

Journal of Engineering Research

Tourism has become an important economic sector and a primary contributing driver of the economy in many parts of the world. The study area is a secluded area in northern Delta Egypt, directly on the Mediterranean Sea. In this research, we try to investigate how tourist development affects the local community, and how the local community takes advantage of the different opportunities offered by the development. Also, we try to answer the question of what makes some people better use the development than others. It is a qualitative interpretive inductive research based on naturalistic narrative methodology. This is achieved through …

Gabion Basket For Reducing Scour Around A Rectangular Bridge Pier, Elsayed M Elshahat

Journal of Engineering Research

Riprap, a slit inside the pier, a number of piles located in front of a pier, collars, and other strategies have all been used to control scouring around bridge piers. In this study, a new alternative countermeasure for reducing scour around the rectangular bridge pier was investigated. A gabion basket —a stone basket attached to the upstream face of the pier—was investigated experimentally for reducing scouring depth around the bridge pier as a countermeasure in a clear-water condition. For estimating the efficiency of using the stone basket as a countermeasure for reducing scour, the scour findings of the pier with …

Towards Public Spaces Compatible With Climatic Changes In Egyptian Societies. An Applied Study On Open Spaces In (Madinaty), Rasha Ahmed Reyad, Dalia Ali Awad Ahmed Reyad, Dalia Ali Awad

Journal of Engineering Research

The (inability to both exist or work together) in the open city-based spaces (where there are lots of homes) communities with climate changes are due to the lack of a clear way(s) of doing things for this, as well as the increase in the costs of (where there are lots of homes) buildings and the increase in their maintenance expenses. The lack of interest in coordinating spaces led to the blurring of public, semi-public, and private properties, and affected the use of these areas. The lack of organization in the (where there are lots of homes) areas and the holy …

Durability Performance Of One-Part Geopolymer Versus Two-Part Geopolymer And Portland Cement Mortar, Sara Mohamed Mostafa, Mariam Farouk Ghazy, Metwaly Abdelatty

Journal of Engineering Research

The investigations in the field of geopolymer binders indicated that this new material has a great potential to be an alternative to cement to reduce the carbon dioxide emissions. On the other hand, it was found that the traditional geopolymer has multiple defects, including the presence of viscous corrosive solutions. Researchers were interested in solving this problem and the traditional type was developed into one-part geopolymer and the need for solutions became in its composition and it became possible for this material to be an alternative to cement. But until now there are unexplained issues about one part geopolymers. In …

Utilization Of Recycled Construction And Demolition Waste In The Manufacture Of Prefabricated Wall Claddings To Achieve Sustainability, Omar Yousef, Eman Attia, Hesham Awad

Journal of Engineering Research

The climate of Egypt is characterized by high temperatures. Clay bricks, the most common type of building bricks in Egypt, are one of the main reasons for increasing the heat gain of buildings. The absence of suitable environmental alternatives for clay bricks calls for an attempt to find and evaluate effective alternatives.This research aims to manufacture wall claddings that meet the environmental requirements and thermal comfort needs of buildings in Egypt through recycling construction and demolition waste (CDW). Multiple proposals featuring different mixtures of cement, sand, water and CDW (crushed concrete and crushed bricks) were tested to determine the most …

Computational Fluid Dynamics Study On A Solar Chimney With Different Ground Materials, Hagar Alm Eldin Mohamad, Medhat Elkelawy, Mohamed Ramon

Journal of Engineering Research

The problem of energy source depletion with the restricted regulation about the emissions make the need for another alternative sours of energy is a worldwide demands. The solar chimney power plant (SCPP) is an optimistic solar energy technology that produces electrical power. In this paper, a 2D analytical study is offered to evaluate the working of the SCPPs’ performance with the varying ground material. Sand, concrete, asphalt, and saturated sand will be used as absorber materials in this study. The Numerical model was done with the realizable k-ɛ turbulence model and the discrete ordinates (DO) solar load model. The model's …

Slice Admission Control Based On Reinforcement Learning For 5g Networks, Mai Z. Ibrahim, Mohamed Talaat Fahim, Nada Elshennawy

Journal of Engineering Research

Network slicing empowers service providers to deploy diverse network slice architectures within a shared physical infrastructure. This technology enables the provision of differentiated services that cater for specific Quality of Service (QoS) requirements of different use cases which need to be adequately supported in 5G networks. By leveraging Network Slicing, operators can effectively meet these diverse requirements and provide customized services to different tenants in a flexible and efficient manner. However, infrastructure providers face a challenging dilemma of the slice admission control regarding whether to accept or reject slice requests. From one perspective, they strive to optimize the utilization of …

Enhancing Fastslam 2.0 Performance Using A De Algorithm With Multi-Mutation Strategies, Hadeer Adel Attia, Mohamed Arafa, Mohamed Talaat Fahim

Journal of Engineering Research

FastSLAM 2.0 is considered one of the popular approaches that utilizes a Rao-Blackwellized particle filter for solving simultaneous localization and mapping (SLAM) problems. It is computationally efficient, robust and can be used to handle large and complex environments. However, the conventional FastSLAM 2.0 algorithm is known to degenerate over time in terms of accuracy because of the particle depletion problem that arises in the resampling phase. In this work, we introduce an enhanced variant of the FastSLAM 2.0 algorithm based on an enhanced differential evolution (DE) algorithm with multi-mutation strategies to improve its performance and reduce the effect of the …

الفنادق الخضراء الذكية كآلية لدعم السياحة البيئية في مصر Smart Green Hotels As A Mechanism To Support Ecotourism In Egypt., Nesma Mohammed Abd El- Maksoud

Journal of Engineering Research

تسعي المبادرة الوطنية للمشروعات الخضراء الذكية بالتزامن مع اهداف استراتيجية التنمية المستدامة لرؤية مصر 2030 الى الحفاظ على التوازن البيئي واستدامة النشاط السياحي والاثري.ويأتي البحث كدراسة تحليلية تطبيقية لتفعيل دور التقنيات الذكية بالفنادق الخضراء وتسليط الضوء على التوجهات والنظم الذكية ودورها في تطبيق التوجهات المعمارية الخضراء ومعايير النجمة الخضراء للفنادق والربط بينهما في اطار الرؤية المستقبلية المجتمعية لدعم السياحة البيئية في مصر.يتضمن البحث الدراسة الاستقرائية للاشتراطات والمعايير المصرية الخاصة بالفنادق البيئية والخضراء ومعايير تقييم المبادرة الوطنية للمشروعات الخضراء الذكية على سبيل المثال ( المكون الأخضر المستدام والمكون التكنولوجي الذكي) بالإضافة الى معايير نظام تقييم النجمة الخضراء يليها الدراسة التحليلية لتوجهات …

Blockchain For Healthcare Systems: Concepts, Applications, Challenges, And Future Trends, Mostafa Eltabakh, Mohamed Nasr, Emad Abdelrahman, Roayat Abdelfatah

Journal of Engineering Research

-Electronic medical records are digital documents that contain medical data pertaining to a patient's medical care. Because electronic health records are regularly exchanged amongst stakeholders in healthcare, they are prone to a range of challenges such as data misuse and loss of privacy and security. These challenges may be solved by utilizing blockchain-based technologies in the healthcare area. Blockchain is a decentralized innovative technology that can completely transform, reshape, and reinvent how data is stored and processed in the healthcare sector. In this article, we offer an overview of the blockchain, its formation, its types, and how it works. We …

Properties Of Cement Composites Utilizing Of Bentonite: A Review, Metwally A. A. Abd Elaty, Wasiem R. Azzam, Ahmed Gamal Eldesoky

Journal of Engineering Research

The use of bentonite clay slurries in civil and geotechnical engineering dates back to Veder's pioneering work in 1953. Since then, bentonite has been used for various applications such as the construction of bored piles and diaphragm walls. Plastic concrete walls also require sufficient strength and modulus to adapt to the surrounding environment, and the characteristics and different forms of bentonite commercially available were reviewed in this paper.This paper reviews the properties and applications of bentonite, including its use in cement-bentonite composites for remedial cut-off wall construction. Cement-bentonite grouts offer advantages over bentonite grouts in terms of ease of use …

Investigating The Microstructure And Mechanical Properties Of Self-Curing Concrete Exposed To Elevated Temperature, Noha Elwakkad

Journal of Engineering Research

This experimental study examines the mechanical and microstructure properties of self-curing concrete (SCUC) containing polyethylene glycol (PEG400) when subjected to high temperatures (600°C). The experimental research used two types of concrete mixtures, which were produced to indicate the effects of self-curing concrete using PEG400 that were added in three ratios (i.e., 0.3 %, 0.5% and 1%) by volume of cement. The parameters investigated in this research are heating period (1h and 2h), curing methods (self-curing SCU, and conventional-curing WC), concrete type (self-compact concrete SCC, and ordinary concrete OC), and cooling action (air and water). Compressive, tensile, flexural strengths and microstructural …

Shear Capacity Of Fiber Reinforced Concrete (Frc) Beams With Openings Strengthened Using Various Systems And Materials, Hind Mohamed, A. H. Abdel-Kareem, Mohamed H. Makhlouf

Journal of Engineering Research

This study presents the findings of an experiment conducted on eleven identical fiber-reinforced concrete beams with two large rectangular openings strategically positioned at the maximum shear zone. The primary objective of the experiment was to compare various strengthening techniques for these beams. The beams were subjected to two-point loading while supported in a simply supported manner. Two reference specimens were included: a solid control beam and a control beam with two large openings. The remaining beams were externally strengthened using a range of methods around the openings, including vertical and inclined schemes. Strengthening materials such as GFRP sheets, steel plates, …

Enhancing Punching Shear Capacity Of Flat Slabs With Hidden Capitals Made Of Strain Hardening Cementitious Composite (Shcc), ‪Mahmoud ‪ Ahmed Abdelaziz‬‏, Nesreen Kassem, Mohamed Hussien

Journal of Engineering Research

This paper focuses on studding the effect of using hidden capitals made of strain hardening cementitious composite (SHCC) to improve the punching shear resistance at slab-column connections. Ten 160 mm thick slabs with identical reinforcement and geometry were constructed in this investigation. Two control specimens, one loaded at the center of the column and the second loaded with eccentricity of 100mm. The other eight specimens were strengthened with SHCC hidden capitals to study the effect of the hidden capital’s thickness, area, fiber content ratio in the SHCC, using drop, and load eccentricity on the punching shear behavior. The results showed …

Outdoor Night Architectural Lighting Art As A Doorway For Heritage Values Rooting And Environmental Conservation فن الإضاءة المعمارية الليلية كمدخل لتأصيل القيم التراثية للمباني ذات القيمة والحفاظ على البيئة المحيطة, Mai Wahba Madkour

Journal of Engineering Research

يمكن استخدام فن الإضاءة المعمارية عند تجديد وإعادة إحياء المباني ذات القيمة التراثية للمساهمة في تعزيز قيمها التاريخية والثقافية والبصرية والتراثية. حيث أن لكل مبنى تراثي احتياجاته ومتطلباته الخاصة التي يجب أخذها في الاعتبار عند تجديه وإعادة تأهيله، يهدف البحث بشكل رئيسي الرئيسي إلى محاولة الوصول لإطارعام عن كيفية تطبيق استخدام فن الإضاءة المعمارية في إعادة إحياء المباني ذات القيمة التراثية او المباني التاريخية في الدول العربية وزيادة وعي المجتمع بأهمية تلك المباني للتأكيد على تأصيل قيمها التراثية.يطرح البحث سؤالًا مهمًا "هل يمكن من خلال استخدام الإضاءة المعمارية الليلية للمباني أو المناطق ذات القيمة التراثية أو التاريخية تأصيل قيمها التراثية …

منظومة رفع كفاءة مراكز المدن الجديدة وفقا للاتجاه العالمي المعاصر A System To Promote The Efficiency Of New City Centers According To The Contemporary Global Trend, Ayatullrahman Sayed Khallaf

Journal of Engineering Research

نظرا لما تسببه العولمة من تغيرات في المدن اليوم حيث أصبحت في حاله تغير مستمر لمواكبه الاحتياجات العمرانية الجديدة، ويشمل ذلك المدن الجديدة المخططة أيضا ،وبتالي فان هذه التطورات تؤثر على مركز المدينة باعتباره اهم المناطق بها والذي تتركز فيه اهم الأنشطة ، لذلك فان التطوير والتجديد العمراني لمراكز المدن اصبح واقع عالمي ومحلي يمكن رصده بسهولة من خلال الباحثين والمعنيين بالرصد العمراني .ولذلك كان اهتمام هذه الدراسة بالتركيز على تحسين ورفع كفاءة البيئة العمرانية لمركز المدينة من خلال استخدام اهم الآيات التجديد العمراني التي تحقق اهم معايير الكفاءة لمركز المدينة .ويتمثل الهدف من الدراسة في الخروج بمنظومة رفع كفاءة …

Potential Of Static, Kinematic, And Rtk In Open Sky Using Gps Only And Gps + Glonass Signals, Nasr Mohamady Saba, Nasr M Saba

Journal of Engineering Research

ABSTRACT: It is now simple to use Global Navigation Satellite System (GNSS) anyplace due to the rapid developments and variety of GNSS satellite techniques. Several satellite systems, including GPS, GLONASS, BIUDO, and GALILEO, are widely available and used. The Differential Global Navigation Satellite System (DGNSS) is being utilized for many different applications, particularly those involving surveying and mapping. For establishing control points (Cps) in the open sky with moderate accuracy, it may be helpful to compare the usage of post-processing methods including static and kinematic also real-time kinematic (RTK) for position accuracy to differentiate their accuracies. The comparison depends on …

Improving The Thermal Comfort Of Industrial Building Using Insulation Materials, Hosam Amr, Androw Khairy

Journal of Engineering Research

industrial buildings are one of the larges used t worldwide, and every day it grows noticeably in many different forms of projects so , the introduction of insulation materials was very essential, and their development for enhancing a variety of parameters such as thermal comfort inside the building which became one of the very important aspects in industrial buildings. Design of any industrial building should be to the lowest cost keeping in consideration importance of thermal comfort and its contribution in the productivity improvement of the workers as well as the administrative employee as well as reducing the high costs …

Flow Pattern And Wave Reflection In Front Breakwaters During The Scour Development: A Review, Rana Nabil Zedan, Ebrahim Rashwan, Hewida Mohammed Omara

Journal of Engineering Research

Abstract- Scour induced by waves and in combined wave-current is the main cause of coastal breakwater failure as a result of a lack of its efficiency. The maximum scours depths need to be estimated for the scours of breakwater foundations. Mechanisms of local scour and predictions of its maximum depths have been studied extensively for many years. Despite the complexity of the scour process, a lot of satisfying results and processes have been achieved by many investigators. So, this review focus on the effect of changing flow pattern and inducing wave reflection in front of vertical breakwaters on scour processes. …

Aum314.1 Music For Non-Linear Narrative Example 2, Sae University College

Exemplars

HD / Exceeds Specification exemplar for AUM314.1 - Music for Non-Linear Narrative

Evaluating Hpx And Kokkos On Risc-V Using An Astrophysics Application Octo-Tiger, Patrick Diehl, Gregor Daiss, Steven Brandt, Alireza Kheirkhahan, Hartmut Kaiser, Christopher Taylor, John Leidel

Faculty Publications

In recent years, computers based on the RISC-V architecture have raised broad interest in the high-performance computing (HPC) community. As the RISC-V community develops the core instruction set architecture (ISA) along with ISA extensions, the HPC community has been actively ensuring HPC applications and environments [10, 29] are supported. In this context, assessing the performance of asynchronous many-task runtime systems (AMT) is essential. In this paper, we describe our experience with porting of a full 3D adaptive mesh-refinement, multi-scale, multi-model, and multi-physics application, Octo-Tiger, that is based on the HPX AMT, and we explore its performance characteristics on different RISC-V …

Translation Speed Influence On Tropical Cyclone Storm Tide And Surge Generation Along The Gulf Of Mexico Coast, Samantha L. Camarda

LSU Master's Theses

This research examines tropical cyclone translation speed as a factor in storm tide and surge height upon landfall on the United States Gulf Coast. Understanding the effect of translation speed on peak storm tide/surge height is needed to better prepare for and predict future damage from tropical cyclone events. Tropical cyclone data are taken from hourly interpolated best-track HURDAT2 data from 1970–2021. This study uses the HURDAT2 hourly interpolated observation data points (24-hours) pre-landfall to landfall. Translation speed is calculated based on the distance traversed between hourly points. Peak storm tide and storm surge data are taken from SURGEDAT from …

Butch Cassidy And The Hole In The Wall Gang In Idaho, John W. Lundin

Works by Local Authors

No abstract provided.

Microplastics In Different Tissues Of A Commonly Consumed Fish, Mohammad Belal Hossain, Farjana Haque Pingki, Md Abdus Samad Azad, As-Ad Ujjaman Nur, Partho Banik, Bilal Ahamad Paray, Takaomi Arai, Jimmy Yu

Faculty, Staff and Student Publications

Microplastics (MPs) ingestion by fish signifies a worldwide threat to human health but limited research has examined their existence within the consumable portions (muscle) of fish. Thus, this study was undertaken to unveil the prevalence, characterization, and contamination extent of MPs across various body tissues, including the muscle of the king mackerel (S. guttatus) from the lower Meghna estuary in Bangladesh-a pioneering investigation in this region. In our analysis, we identified a total of 487 MPs, with an average abundance of 48.7 ± 20.3 MPs/individual. These MPs were distributed across different tissues, with respective concentrations of 0.84 ± …

Single-Cell Analysis Differentiates The Effects Of P53 Mutation And P53 Loss On Cell Compositions Of Oncogenic Kras-Driven Pancreatic Cancer, Xinlei Sun, Daowei Yang, Yang Chen

Faculty, Staff and Student Publications

Pancreatic ductal adenocarcinoma (PDAC) is a devastating malignant disease with a dismal prognosis. In the past decades, a plethora of genetically engineered mouse models (GEMMs) with autochthonous pancreatic tumor development have greatly facilitated studies of pancreatic cancer. Commonly used GEMMs of PDAC often harbor the oncogenic KRAS driver mutation (KrasG12D), in combination with either p53 mutation by knock-in strategy (Trp53R172H) or p53 loss by conditional knockout (Trp53cKO) strategy, in pancreatic cell lineages. However, the systematic comparison of the tumor microenvironment between KrasG12D; Trp53R172H (KPmut) mouse models and KrasG12D; Trp53cKO (KPloss) mouse models …

Inverse Engineering Of Absorption And Scattering In Nanoparticles: A Machine Learning Approach, Alex Vallone, Nooshin M. Estakhri, Nasim Mohammadi Estrakhri

Engineering Faculty Articles and Research

We use a region-specified machine learning approach to inverse design highly absorptive multilayer plasmonic nanoparticles. We demonstrate the design of particles with a wide range of absorption to scattering ratios (i.e., cloaked absorbers and bright absorbers) and for different visible wavelengths.

Management Of Operations In Projects Including Planning, Organization And Control From The Beginning To The End Of Implementation, Burim Isa Berisha Dr.Sc

International Journal of Business and Technology

The project usually arises as soon as the client’s need is identified, and goes through all the extensive phases and sub-phases to take its true form and put into operation. The project is divided into two main parts that include Planning and Implementation that are separate in these stages: definition, planning, organization, control, completion. Planning involves a detailed calculation of the project. This includes known facts, admissible facts and risk calculation. Activity model used by IKOMs Planning as a process involves the cost that accompanies it. The manager must strike the balance between cost and benefit. Project control uses data …

Project Planning And Control, Burim Isa Berisha Dr.Sc

International Journal of Business and Technology

Operations management is important because it relates to the creation of products and services on which we are all dependent. Operations management is also quite motivating; operations are the center of many changes that affect business - changes in customer preferences, changes in the supply chain caused by technologies based on the businesses where we work, where we want to work and so on.

Operations Management includes the role of operations management, the various characteristics of processes, management activities, the responsibilities of managers, and the timely evolution of Operations Management.

Operations Management is a constant change, fostering creativity which allows …

Long-Term Auditor-Client Relationship And Its Effects On The Audit Quality, Burim Isa Berisha Dr.Sc

International Journal of Business and Technology

Apart from this, the long-term Auditor client relationship has been the center of attention in most of the discussions and debates as well. Numerous studies have been conducted by the academic researchers, financial and professional analysts, regulatory authorities and governing bodies, and in some cases by the Auditors and the firms as well regarding the effects of long-term Auditor-client relationship on audit quality, equity risk premium, financial reports quality, audit pricing etc. These studies provide us with different results, both with the positive and negative associations and effects of long-term Auditor-client relationship on the basis of different factors and contexts. …