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Articles 901 - 930 of 20593
Full-Text Articles in Entire DC Network
The Ratification And Implementation Of The International Maritime Organisation (Imo) Instruments : A Social And Policy Persepctive On Maritime Governance In Fiji, Miriama Latianara
The Ratification And Implementation Of The International Maritime Organisation (Imo) Instruments : A Social And Policy Persepctive On Maritime Governance In Fiji, Miriama Latianara
World Maritime University Dissertations
No abstract provided.
Decarbonization Of The Fishing Fleet In The Galapagos Islands : Governance Challenges And Opportunities For Implementing Renewable Energy Sources, Byron Eduardo Robles Romero
Decarbonization Of The Fishing Fleet In The Galapagos Islands : Governance Challenges And Opportunities For Implementing Renewable Energy Sources, Byron Eduardo Robles Romero
World Maritime University Dissertations
No abstract provided.
The Roles And Responsibilities Of Master And Remote Operator In Maritime Autonomous Surface Ship (Mass) Under The Colregs, Yuma Sakamoto
The Roles And Responsibilities Of Master And Remote Operator In Maritime Autonomous Surface Ship (Mass) Under The Colregs, Yuma Sakamoto
World Maritime University Dissertations
No abstract provided.
The Problem Of Noise Pollution In Chinese Waters : Can The Current National Legal Framework Tackle The Problem?, Zhou Wang
World Maritime University Dissertations
No abstract provided.
Preparedness And Response To Oil And Biofuel Spills : A Case Study Of The Western Indian Ocean, Soifoine Abdillah
Preparedness And Response To Oil And Biofuel Spills : A Case Study Of The Western Indian Ocean, Soifoine Abdillah
World Maritime University Dissertations
No abstract provided.
Towards Zero Emissions Ports In Saudi Arabia : Drivers, Barriers, And Opportunities, Saad Hulil S Alshahrani
Towards Zero Emissions Ports In Saudi Arabia : Drivers, Barriers, And Opportunities, Saad Hulil S Alshahrani
World Maritime University Dissertations
No abstract provided.
Oil Spill Pollution In The Caspian Sea In Case Of Azerbaijan : Evaluating Spill Patterns And Governance Gaps In Azerbaijan’S Marine Oil Pollution Response, Ulviyya Hasanova
Oil Spill Pollution In The Caspian Sea In Case Of Azerbaijan : Evaluating Spill Patterns And Governance Gaps In Azerbaijan’S Marine Oil Pollution Response, Ulviyya Hasanova
World Maritime University Dissertations
No abstract provided.
Maritime Risk Management Of Methanol Bunkering : Study On Key Points Of Ship Supervision And Inspection, Baozhong Li
Maritime Risk Management Of Methanol Bunkering : Study On Key Points Of Ship Supervision And Inspection, Baozhong Li
World Maritime University Dissertations
No abstract provided.
Evaluating The Implementation Of The Ballast Water Management Convention In Nigeria : The Possible Contribution Of The Experimentalist Governance Approach, Muhammad Ahmad
World Maritime University Dissertations
No abstract provided.
A Study On The Influence Of Ship Type And Size On Co2 Emissions Based On The Eu Mrv Data, Sangdae Seo
A Study On The Influence Of Ship Type And Size On Co2 Emissions Based On The Eu Mrv Data, Sangdae Seo
World Maritime University Dissertations
No abstract provided.
Port State Control In The Philippines : Addressing Challenges And Recommending Pathways For Enhancing Qualification And Operational Effectiveness, Kethlynn Mae Nadal
Port State Control In The Philippines : Addressing Challenges And Recommending Pathways For Enhancing Qualification And Operational Effectiveness, Kethlynn Mae Nadal
World Maritime University Dissertations
No abstract provided.
Assessing Spatial And Temporal Patterns Of Industrial Bottom Trawlers Using Vessel Monitoring System Data : A Case Study Of Ghana, Emmanuel Agbeko
Assessing Spatial And Temporal Patterns Of Industrial Bottom Trawlers Using Vessel Monitoring System Data : A Case Study Of Ghana, Emmanuel Agbeko
World Maritime University Dissertations
No abstract provided.
Legal Analysis On The Use Of Maritime Drones In Law Enforcement Operations, Da Ye Kim
Legal Analysis On The Use Of Maritime Drones In Law Enforcement Operations, Da Ye Kim
World Maritime University Dissertations
No abstract provided.
Strengthening Thailand’S Ship-Sourced Oil Spill Management : A Comparative Analysis Of Legal And Response Frameworks In Thailand, The United States, And Singapore, Supranee Wattanapongsakul
Strengthening Thailand’S Ship-Sourced Oil Spill Management : A Comparative Analysis Of Legal And Response Frameworks In Thailand, The United States, And Singapore, Supranee Wattanapongsakul
World Maritime University Dissertations
No abstract provided.
Development And Characterization Of Sustainable Aluminum Metal Matrix Composites With Date Palm Agro-Residues As Reinforcement, Ansar Kareem
Development And Characterization Of Sustainable Aluminum Metal Matrix Composites With Date Palm Agro-Residues As Reinforcement, Ansar Kareem
Dissertations
Aluminum Matrix Composites (AMCs) are extensively used in various industrial applications owing to their exceptional mechanical, material, and tribological properties. This led to the development of AMCs with every possible aluminum alloy as matrix, incorporated with various reinforcement materials to achieve desired material properties. There has been an increasing trend in the utilization of agricultural and industrial waste products as reinforcement material in AMCs. Date palm trees produce huge quantity of agricultural waste in different forms. Usually, these wastes are burned or disposed of in landfills which cause environmental pollution. Date palm agro-wastes can be incinerated to produce date palm …
Process-Driven Manufacturability Constraints In Design For Wire Arc Additive Manufacturing, Monsuru Ramoni, Sampson Gholston, Albert E. Patterson
Process-Driven Manufacturability Constraints In Design For Wire Arc Additive Manufacturing, Monsuru Ramoni, Sampson Gholston, Albert E. Patterson
Manufacturing & Industrial Engineering Faculty Publications
Wire arc additive manufacturing (WAAM) has emerged as a useful option for large-scale metal additive manufacturing. It has gained widespread use in the aerospace industry and other applications that require large and complex custom parts. The process is a combination of a precise control system and a welding process, typically GTAW or MIG welding. It is a member of the directed energy deposition (DED) family of AM processes. Compared with many metal AM processes, it is relatively simple and cost-effective but almost always requires a significant amount of postprocessing before parts can be used. The AM-based nature of the process …
Online Cyber-Physical Neural Network Model For Real-Time Hybrid Simulation, Faisal Nissar Malik, Liang Cao, James Ricles, Austin Downey
Online Cyber-Physical Neural Network Model For Real-Time Hybrid Simulation, Faisal Nissar Malik, Liang Cao, James Ricles, Austin Downey
Faculty Publications
Real-time hybrid simulation (RTHS) is an experimental testing methodology that divides a structural system into an analyticaland an experimental substructure. The analytical substructure is modeled numerically, and the experimental substructure ismodeled physically in the laboratory. The two substructures are kinematically linked together at their interface degrees of freedom,and the coupled equations of motion are solved in real-time to obtain the response of the complete system. A key challenge inapplying RTHS to large or complex structures is the limited availability of physical devices, which makes it difficult to representall required experimental components simultaneously. The present study addresses this challenge by introducing …
A New Low-Rate Stable Hydrogel Cathode For Aqueous Zn-Ion Batteries, Roya Rajabi, Shichen Sun, Jamil A. Khan, Morgan Stefik, Kevin Huang
A New Low-Rate Stable Hydrogel Cathode For Aqueous Zn-Ion Batteries, Roya Rajabi, Shichen Sun, Jamil A. Khan, Morgan Stefik, Kevin Huang
Faculty Publications
Aqueous Zn-ion batteries (ZIBs) are attractive candidates for large-scale energy storage owing to the abundance, low cost, and intrinsic safety of Zn metal. However, their practical application is hindered by poor cycle stability, especially at low current densities, due to cathode dissolution and limited electrochemically active sites (EAS). Herein, a hydrogel-based cathode comprising ammonium vanadate, carbon black, and a Zn-ion-conducting carboxymethyl chitosan–acrylamide hydrogel matrix doped with Zn(ClO4)2 is reported. This design establishes a continuous Zn-ion-conducting network, thereby maximizing EAS density throughout the electrode volume. The ZIB with the hydrogel cathode exhibits outstanding cycling stability, with 77% capacity retention after 2000 …
Melamine-Based Polymer Nanofibers For Supercapacitors, Samar A. Salim, Hani Nasser Abdelhamid
Melamine-Based Polymer Nanofibers For Supercapacitors, Samar A. Salim, Hani Nasser Abdelhamid
Nanotechnology Research Centre
This investigation describes the synthesis, electrospinning, and characterization of melamine-glutaraldehyde (MAGA) polymer composites with polymethyl methacrylate (PMMA) for supercapacitors applications. Electrospun fibers are generated by combining the MAGA polymer with PMMA at varying concentrations (2.5 %, 5 %, and 10 wt%). The synthesis of the polymer, its morphological attributes, and structural features are validated by characterization methods e.g., XRD, TEM, SEM, and FT-IR. In a three-electrode configuration, the electrochemical performances of the prepared electrodes are assessed using cyclic voltammetry (CV), galvanostatic charge-discharge (GCDC), and linear sweep voltammetry (LSV). The results suggest that the 5 % MAGA-PMMA composite has a specific …
Al-Driven Interfacial Gap Prediction In Overlapped Al/Cu Laser Weld Joint For Battery Applications, Hyeonhee Kim, Sanghoon Kang, Cheolhee Kim, Yong Hoon Jang, Minjung Kang
Al-Driven Interfacial Gap Prediction In Overlapped Al/Cu Laser Weld Joint For Battery Applications, Hyeonhee Kim, Sanghoon Kang, Cheolhee Kim, Yong Hoon Jang, Minjung Kang
Mechanical and Materials Engineering Faculty Publications and Presentations
The battery tab-to-busbar welding process forms the primary electrical path in battery packs and is directly linked to both performance and safety. Variations in jig alignment, material tolerance, and forming quality can cause small interfacial gaps that lead to weak welds. An artificial intelligence (AI)-driven method was proposed in this study for predicting interfacial gaps in aluminum-copper overlap joints by integrating deep learning with multi-sensor data. A charge-coupled device (CCD) camera, spectrometer, and optical coherence tomography (OCT) sensors were employed to develop and validate deep learning models under varying gap conditions. The results revealed that the variation in melt-pool dimensions, …
Characterizing Surface Waviness Of Aluminum Alloy: An Approach To Minimize Post-Processing In Wire Arc Additive Manufacturing (Waam) Production, Shammas Mahmood Shafi, Anis Fatima, Nicholas V. Hendrickson
Characterizing Surface Waviness Of Aluminum Alloy: An Approach To Minimize Post-Processing In Wire Arc Additive Manufacturing (Waam) Production, Shammas Mahmood Shafi, Anis Fatima, Nicholas V. Hendrickson
Michigan Tech Publications
Wire Arc Additive Manufacturing (WAAM) offers high deposition rates and cost-effective production of large metal components but suffers from poor surface quality, particularly surface waviness, which increases post-processing requirements and limits industrial adoption. Since waviness directly impacts structural integrity, resource efficiency, and industrial applicability, understanding how process parameters govern this feature is critical for reducing post-processing requirement. This study systematically investigated the influence of voltage, travel speed, and wire feed speed on surface waviness in aluminum alloy walls fabricated by WAAM. A two-level factorial design with 16 experiments was conducted, and surface waviness was quantified using height gauge measurements relative …
A Comprehensive Assessment And Benchmark Studyof Large Atomistic Foundation Models For Phonons, Md Zaibul Anam, Ogheneyoma Aghoghovbia, Mohammed Al-Fahdi, Lingyu Kong, Victor Fung, Ming Hu
A Comprehensive Assessment And Benchmark Studyof Large Atomistic Foundation Models For Phonons, Md Zaibul Anam, Ogheneyoma Aghoghovbia, Mohammed Al-Fahdi, Lingyu Kong, Victor Fung, Ming Hu
Faculty Publications
The rapid development of universal machine learning potentials (uMLPs) has enabled efficient, accurate predictions of diverse material properties across broad chemical spaces. While their capability for modeling phonon properties is emerging, systematic benchmarking across chemically diverse systems remains limited. We evaluate six recent uMLPs—EquiformerV2, MatterSim, MACE, and CHGNet—on 2429 crystalline materials from the Open Quantum Materials Database. Models were used to compute atomic forces in displaced supercells, derive interatomic force constants (IFCs), and predict phonon properties including lattice thermal conductivity (LTC), compared with density functional theory and experimental data. The EquiformerV2 pretrained model trained on the OMat24 dataset exhibits strong …
Control Of Ferroelectric And Dielectric Properties Of Undoped, Fe, And Nb-Doped Single-Crystalline (001) Oriented Pb (Zr0.5ti0.5) O3 Thin Films, Mahamudu H. Mtebwa
Control Of Ferroelectric And Dielectric Properties Of Undoped, Fe, And Nb-Doped Single-Crystalline (001) Oriented Pb (Zr0.5ti0.5) O3 Thin Films, Mahamudu H. Mtebwa
Tanzania Journal of Engineering and Technology (TJET)
While several factors that influence the properties of ferroelectric devices have been extensively studied in bulk ceramics and polycrystalline thin films, limited is known about the same on single crystalline thin films which have great potential in memory and energy applications. This knowledge gap is largely due to the limited availability of substrates with lattice parameters suitable for supporting high-quality epitaxial growth. In this study, undoped, Fe-doped, and Nb-doped (001)-oriented Pb(Zr₀.₅Ti₀.₅)O₃ thin films were deposited using pulsed laser deposition, each with a SrRuO₃ bottom electrode and a PrScO₃ substrate. The doping concentration used is 1% for both Fe and Nb. …
Adoption Of Agrivoltaics In Developing Countries: A Review On Challenges, Opportunities And Future Prospects, Abdi J. Athumani, Pater Makolo
Adoption Of Agrivoltaics In Developing Countries: A Review On Challenges, Opportunities And Future Prospects, Abdi J. Athumani, Pater Makolo
Tanzania Journal of Engineering and Technology (TJET)
This paper provides a review of agrivoltaics technology and how it has been applicable in developing countries, including African countries. Agrivoltaics, the integration of agricultural production with photovoltaic energy generation, offers promising solutions to water- energy-food nexus in developing countries. This technology offers the dual benefit of increasing agricultural productivity while generating clean energy, which is very important for regions facing frequent electricity shortages and declining agricultural yields due to climate change. However, despite its potential, the adoption of agrivoltaics in developing nations remains limited in comparison to developed countries due to financial, technical and policy constraints. This paper explores …
Cnn-Based Hybrid Model For Detecting Blight Diseases In Potato Crops With Advanced Image Processing Techniques, Farian S. Ishengoma
Cnn-Based Hybrid Model For Detecting Blight Diseases In Potato Crops With Advanced Image Processing Techniques, Farian S. Ishengoma
Tanzania Journal of Engineering and Technology (TJET)
Potato production plays a vital role in global agriculture as a major food source for large populations. However, potato crops are highly susceptible to diseases, particularly Early Blight and Late Blight, which result in substantial yield losses. Timely detection and effective control of these diseases are essential for maintaining stable crop output. This study explores the integration of Convolutional Neural Networks (CNNs) and advanced image processing techniques to differentiate between diseased and healthy potato plants accurately. Two datasets comprising original and enhanced images were used to train four CNN models: InceptionV3, Xception, Densenet201, and Resnet152V2. The original images underwent background …
Optimal Location And Sizing Of Facts Devices To Improve Voltage Profiles On A 132 Kv Mwanza-Musoma-Nyamongo Transmission Line, Peter Makolo
Optimal Location And Sizing Of Facts Devices To Improve Voltage Profiles On A 132 Kv Mwanza-Musoma-Nyamongo Transmission Line, Peter Makolo
Tanzania Journal of Engineering and Technology (TJET)
Recently, utility companies have desired to supply quality, stable and reliable power to customers, and ensure they meet the demand. Flexible AC Transmission Systems (FACTS) dynamic compensator devices such as Static Synchronous Compensator (STATCOM), Static VAr Compensator (SVC) and Unified Power Flow Controller (UPFC) are an impeccable choice, however, cost is one of the limiting factors following these technologies. In addition, using FACTS devices in the system requires a detailed steady state, dynamic and optimisation analysis to effectively meet the purpose and ensure reduced cost. This paper proposes using an optimised FACTS device to improve voltage profile, power transfer, system …
Enhancing 6g Network Security With Quantum Key Distribution: A Comprehensive Review, Bassma M. Kamil
Enhancing 6g Network Security With Quantum Key Distribution: A Comprehensive Review, Bassma M. Kamil
Al-Esraa University College Journal for Engineering Sciences
With the considerable progress of sixth-generation (6G) networks further on the horizon, security has attracted much attention in the face of increasingly sophisticated threats, especially from quantum computing. Classical cryptographic schemes based on computational hardness are becoming more and more brittle, as they can easily be attacked with a quantum computer. Quantum Key Distribution (QKD) arises as a promising tool for information-theoretic security through quantum mechanics to obtain an unbreakable key by exchanging unknown bit sequences. In this paper, we provide an extensive survey on the integration of QKD both in the envisioned 6G architecture, including current implementations, technical feasibility, …
Protection The Nfv Net-Work Using The Random Forest Classification, Mustafa H. Taha, Ibtesam Jomaa Hawi, Wafaa Waheeb Abdullah Ali
Protection The Nfv Net-Work Using The Random Forest Classification, Mustafa H. Taha, Ibtesam Jomaa Hawi, Wafaa Waheeb Abdullah Ali
Al-Esraa University College Journal for Engineering Sciences
A misuse attack is the most common and dangerous type of attack that could target NFV (Network Function Virtualization). In a misuse attack, the attacker attempts to consume the NVF environment’s resources by sending a large amount of traffic. To protect the NFV environment, an early and accurate misuse attack detection system has been proposed based on NFV and Random Forest Classifier. The proposed model starts with importing the dataset and analyzing it then pre-processing and feature selection using a PSO (particle swarm optimization) Test algorithm, classification is based on the most common and efficient machine learning technique, which is …
Dynamic Ris-Enabled Massive Mimo Noma Systems Power Allocation Optimization For 6g Using Machin Learning Approach, Mohamed Hassan, Khalid Hamid, Salah Hagahmoodi, Elmuntaser Hassan
Dynamic Ris-Enabled Massive Mimo Noma Systems Power Allocation Optimization For 6g Using Machin Learning Approach, Mohamed Hassan, Khalid Hamid, Salah Hagahmoodi, Elmuntaser Hassan
Al-Esraa University College Journal for Engineering Sciences
This study examines spectral efficiency (SE) and throughput throughout a spectrum of user densities (from 50 to 1000 users), user mobility speeds (0 to 350 km/h), latency, packet loss, and fairness index, within a wide range of signal-to-noise ratios (SNRs). The analysis includes a number of different situations, such as (i) cooperative non-orthogonal multiple access (NOMA) with massive multiple-input multiple-output (mMIMO), (ii) mMIMO cooperative NOMA integrated with cognitive radio (CR), and (iii) CR-assisted mMIMO cooperative NOMA enhanced with reconfigurable intelligent surfaces (RIS). All of these are part of 6G millimeter-wave (mmWave) networks. The study investigates the enhancement of latency, packet …
Empirical Research Of A Greenhouse Monitoring And Controlling System Using Zigbee Protocol, Mohammed Hijazeh, Salah Hagahmoodi
Empirical Research Of A Greenhouse Monitoring And Controlling System Using Zigbee Protocol, Mohammed Hijazeh, Salah Hagahmoodi
Al-Esraa University College Journal for Engineering Sciences
Greenhouses are of great importance in the agricultural field as they provide the appropriate and important environment for the growth and production of various plants regardless of the surrounding environmental conditions. Monitoring and controlling these houses are considered necessary and important in order to provide the required environment and obtain the best production. Therefore, the aim of this project is to study the monitoring and control of these houses using wireless sensor networks, which are considered modern and simple methods due to the accuracy of work and little effort they provide, and thus better production. The study will be for …