Open Access. Powered by Scholars. Published by Universities.®

Engineering Commons™

Open Access. Powered by Scholars. Published by Universities.®

PDF

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type

Articles 5641 - 5670 of 193548

Full-Text Articles in Engineering

Thermal Performance Evaluation Of Solar Cooling Systems For Educational Facilities In Baghdad, Yasser Alawi Mohammed Attia Al-Jubouri Dec 2025

Thermal Performance Evaluation Of Solar Cooling Systems For Educational Facilities In Baghdad, Yasser Alawi Mohammed Attia Al-Jubouri

Al-Esraa University College Journal for Engineering Sciences

Schools in Baghdad also suffer from poor thermal comfort, which is a common problem in high-temperature and low-humidity arid climates such as that of the city, where using cooling devices leads to a large energy demand and overloads on the national power grid. Such study offers a thorough assessment of the thermal performance of solar-based cooling systems in an efficient manner to be suitable for educational buildings in Baghdad. The analysis is centred on a solar thermal cooling system with absorption as the heat interaction medium, and an experimental characterisation and mathematical simulation itself are performed. A pilot installation, consisting …

Go to article

An Entrepreneurial Approach To International Engineering Programs, Mark W. Rectanus Dec 2025

An Entrepreneurial Approach To International Engineering Programs, Mark W. Rectanus

Journal of International Engineering Education

No abstract provided.

Go to article

Efficient Task Allocation Technique For Robots In Smart Warehouse Using Center Of Items (Coi) Methodology, ‪Ahmed Yahya‬‏, Mohamed S. Saraya, Ahmed I. Saleh Dec 2025

Efficient Task Allocation Technique For Robots In Smart Warehouse Using Center Of Items (Coi) Methodology, ‪Ahmed Yahya‬‏, Mohamed S. Saraya, Ahmed I. Saleh

Mansoura Engineering Journal

Nowadays, online shopping is very important in Daily life. in 2020 During the quarantine during the spread of COVID-19, online orders increased dramatically, as a result of the great progress in fifth-generation technologies and using the Internet of Things (IoT) and industrial Internet of Things (IIoT), industry 4.0 and 5.0, fog computing, cloud computing, robots systems, and drones systems. Smart warehouses picking system becomes a Basic need and can be implemented to improve efficiency in logistics. Smart warehouses are growing more dependent on robot systems to make the process of meeting these requests more flexible and effective. Therefore, the allocation …

Go to article

Aerodynamics And Heat Transfer In Polymer Blown Film Processing: Experimental And Numerical Investigation, Mohammad Luqman Zulbakri, Nur Atiqah Mat. Rautin, Raa Khimi Shuib, Ku Marsilla Ku Ishak, Auratus Zuratul Ain Abdul Hamid, Mohamad Danial Shafiq, Mohamad Yusof Idroas, Muhammad Khalil Abdullah Dec 2025

Aerodynamics And Heat Transfer In Polymer Blown Film Processing: Experimental And Numerical Investigation, Mohammad Luqman Zulbakri, Nur Atiqah Mat. Rautin, Raa Khimi Shuib, Ku Marsilla Ku Ishak, Auratus Zuratul Ain Abdul Hamid, Mohamad Danial Shafiq, Mohamad Yusof Idroas, Muhammad Khalil Abdullah

Makara Journal of Technology

The effects of airflow dynamics, heat transfer, and mechanical properties on the HDPE blown film extrusion process were examined using a single-lip air ring with a fixed compressed-air valve opening angle of 10°. Reynolds numbers ranging from 9175 to 25911 were analyzed to understand their impact on cooling efficiency, bubble morphology, and film properties. Numerical simulations employing the Standard k−ω turbulence model in ANSYS FLUENT v2023, with mesh refinement achieving y+ ≈ 1, captured detailed flow and heat transfer behavior. Results showed that higher Reynolds numbers significantly enhanced the heat transfer coefficient, with values increasing from 1096 W/m²·K at Reynold …

Go to article

Prediction Of Maximum Local Scour Depth Due To Horizontal Jets Of Flushing Gate Using Artificial Neural Network, Adhy Kurniawan, Muhammad Sulaiman, Agus Maryono, Bambang Agus Kironoto, Amalia Ula Hazhiyah Dec 2025

Prediction Of Maximum Local Scour Depth Due To Horizontal Jets Of Flushing Gate Using Artificial Neural Network, Adhy Kurniawan, Muhammad Sulaiman, Agus Maryono, Bambang Agus Kironoto, Amalia Ula Hazhiyah

Makara Journal of Technology

Local scour is a serious concern for hydraulic engineers. To maintain the reservoir capacity, flushing accumulated sediment is necessary, resulting in a turbulent and scouring jet from the flushing gate. Predicting the maximum scour depth from these water jets is crucial for civil engineers. Despite many proposed equations, one have shown consistent applicability due to the complex nature of the process. Ensuring accurate prediction between hydraulic parameters and the geometry of the scour hole in prototype experiments remains a key issue. To address this issue, this paper examines the use of artificial neural network (ANN) analysis as a computing device …

Go to article

Dual-Interface Wifi Packet Sniffer System Using Esp32-Cam With Real-Time Pcap Generation For Iot Network Analysis, Boy Setiawan Boy, Maghfiroh Maulani, Zico Pratama Putra, Muhammad Senoyodha Brennaf Dec 2025

Dual-Interface Wifi Packet Sniffer System Using Esp32-Cam With Real-Time Pcap Generation For Iot Network Analysis, Boy Setiawan Boy, Maghfiroh Maulani, Zico Pratama Putra, Muhammad Senoyodha Brennaf

Makara Journal of Technology

This study focuses on designing and implementing a cost-effective and energy-efficient WiFi packet sniffer system using the ESP32. The ESP32-CAM module, which combines WiFi, Bluetooth, and microSD support, is used to capture IEEE 802.11 frames in real-time via promiscuous mode. Packets are stored in packet capture format, which is compatible with tools such as Wireshark and Scapy. Developed using the official ESP-IDF, it offers low-level control and high performance. Two user interfaces were implemented: a UART-based text menu and a web-based HTTPS menu hosted on the ESP32 itself. Functional and performance evaluations were conducted with a focus on capturing broadcast …

Go to article

Digital Twinning To Advance Effluent Water Treatment For Pulp And Paper Mills: A Data-Driven Approach For Process Optimization, Fatima Iqbal, Fatemeh Naeijian, Christopher Page, George Fu, Francisco Cubas-Suazo, Stetson Rowles Dec 2025

Digital Twinning To Advance Effluent Water Treatment For Pulp And Paper Mills: A Data-Driven Approach For Process Optimization, Fatima Iqbal, Fatemeh Naeijian, Christopher Page, George Fu, Francisco Cubas-Suazo, Stetson Rowles

Civil Engineering & Construction: Faculty Publications

The pulp and paper industry is the third largest freshwater consumer and faces pressure to minimize water usage and environmental impact. Aerated stabilization basins (ASBs) play a crucial role in treating their wastewater, yet existing open-source models often fail to accurately predict treatment efficiency across varying conditions. This study addresses this gap by advancing ASB modeling for ultimate oxygen demand prediction. Specifically, we improved accuracy with variable temperature corrections and incorporating uncertainty to capture the variability in outputs. The models demonstrated strong predictive performance for ultimate oxygen demand (mainly carbonaceous and nitrogenous biochemical oxygen demand) with R2 values ranging from …

Go to article

Bio-Papcz: Corn Starch-Based Composite Bioplastic Reinforced With Pineapple Leaf Fiber (Palf), Zinc Oxide (Zno), And Polyvinyl Alcohol (Pva), Marvin C. Caya, Shervin Austin C. Huang, Jovar Khalel J. Maghari, Ruel M. Levida Dec 2025

Bio-Papcz: Corn Starch-Based Composite Bioplastic Reinforced With Pineapple Leaf Fiber (Palf), Zinc Oxide (Zno), And Polyvinyl Alcohol (Pva), Marvin C. Caya, Shervin Austin C. Huang, Jovar Khalel J. Maghari, Ruel M. Levida

Sinaya: A Philippine Journal for Senior High School Teachers and Students

Plastic pollution poses a serious global threat, as petroleum-based plastics persist for centuries, and their surging production of over 450 million tons overwhelms ecosystems (Ritchie et al., 2023). Using a quantitative experimental research design, the study examined the effects of varying concentrations of cornstarch-based bioplastic reinforced with pineapple leaf fiber (PALF), polyvinyl alcohol (PVA), and zinc oxide (ZnO) on the bioplastic’s tensile strength and soil degradability. Sample C2 (ZnO 3.0 %w/w; PVA 9.0 %w/w) demonstrated the optimal tensile properties with a tensile strength of 0.76 MPa and an elongation at break of 6.40%, which was attributed to the addition of …

Go to article

Effects Of Foam Type And Thickness On Impact Resistance, Thermal Insulation, And Cost-Effectiveness Of Medical Containers For Drone Delivery, Josh Henry C. Soriano, Eriel V. Fonte, Lambertsus S. Novera, Nicolai Paolo B. Villarin, Joel B. Jalon, Jr. Dec 2025

Effects Of Foam Type And Thickness On Impact Resistance, Thermal Insulation, And Cost-Effectiveness Of Medical Containers For Drone Delivery, Josh Henry C. Soriano, Eriel V. Fonte, Lambertsus S. Novera, Nicolai Paolo B. Villarin, Joel B. Jalon, Jr.

Sinaya: A Philippine Journal for Senior High School Teachers and Students

Accessible healthcare remains a challenge for rural communities lacking reliable infrastructure for medical supply delivery. Delivery drones have recently emerged as a viable alternative, dropping medical containers during flight. However, the effectiveness of different foam types and thicknesses combined with corrugated cardboard as shock-absorbing materials in a medical container for delivery drones has yet to be tested. Thus, this study designed cost-effective containers using corrugated cardboard and multiple foam types and thicknesses, aiming to preserve the integrity of the contents, withstand impact, and control temperatures. Four foam types—polystyrene, polyurethane, polyethylene, and expanded polystyrene (EPS) —were tested at 1 cm, 2 …

Go to article

Uji Kelayakan Teknis Dan Performa Auvest: Rompi Pendingin Otomatis Berbasis Wearable Thermoelectric Cooler Untuk Mitigasi Risiko Heat Stress, Muchammad Adam Wildan, Amelia Avril Rayhana, Nadia Hanifan Nabila, Bian Shabri Putri Irwanto Dec 2025

Uji Kelayakan Teknis Dan Performa Auvest: Rompi Pendingin Otomatis Berbasis Wearable Thermoelectric Cooler Untuk Mitigasi Risiko Heat Stress, Muchammad Adam Wildan, Amelia Avril Rayhana, Nadia Hanifan Nabila, Bian Shabri Putri Irwanto

National Journal of Occupational Health and Safety

Heat stress is a serious threat to construction workers that can reduce productivity and even threaten lives. Existing cooling vest innovations still have limitations, such as weight, manual systems, and the risk of leakage. This study aims to analyze the effectiveness of the Automatic Vest (AUVEST), an automatic cooling vest based on Wearable Thermoelectric Cooler and the Internet of Things (IoT), in preventing the risk of heat stress. The method used is experimental with trials on one construction worker in indoor and outdoor environments. AUVEST is equipped with temperature sensors (DS18B20, TMP102) and humidity (DHT11), whose data is processed by …

Go to article

Optimal Sizing Of Pv Water Pumping System For Off-Grid Rural Communities, Basma Abulkheir, Eid Gouda, A. A. Hegazi, Amir Abdel Menaem Dec 2025

Optimal Sizing Of Pv Water Pumping System For Off-Grid Rural Communities, Basma Abulkheir, Eid Gouda, A. A. Hegazi, Amir Abdel Menaem

Mansoura Engineering Journal

A large population worldwide lives in remote rural communities without access to electricity due to the limited reach of national transmission networks. This creates significant challenges in accessing water, hindering improvements in living conditions for off-grid communities. Photovoltaic water pumping systems (PVWPSs) offer a viable solution to this issue, but their sustainability must be examined due to the unpredictable nature of solar radiation. This paper presents a practical techno-economic approach to optimally size a PVWPS. A Particle Swarm Optimization (PSO) algorithm is employed, considering technical and economic indicators like life cycle cost, loss of load probability and PV curtailment rate. …

Go to article

Utilization Of Biochar From Date Palm For Wastewater Treatment Technologies: Mini-Review, Atheel Alwash, Emad Yousif, Salam Mohammed Dec 2025

Utilization Of Biochar From Date Palm For Wastewater Treatment Technologies: Mini-Review, Atheel Alwash, Emad Yousif, Salam Mohammed

Al-Mustaqbal Journal of Sustainability in Engineering Sciences

Recently, recycling agricultural waste has gained great importance in the field of the biochar industry, as it is a sustainable and inexpensive material that can be used to get rid of environmentally polluting materials. Dates are one of the major agricultural wastes in Iraq and the Gulf countries, which include fronds, seeds, and trunks. The challenge of obtaining a green and clean environment is represented by the safe disposal of these residues. These wastes are promising materials for producing biochar products as efficient adsorbents with improved characteristic properties. The present article revises the synthesis of biochar derived from date palm …

Go to article

The Converging Frontiers: 3d Printing Of Polyvinyl Chloride (Pvc) For Environmental Remediation, Hazim F. Abbas, Salam Mohammed, Amamer M. Redwan Dec 2025

The Converging Frontiers: 3d Printing Of Polyvinyl Chloride (Pvc) For Environmental Remediation, Hazim F. Abbas, Salam Mohammed, Amamer M. Redwan

Al-Mustaqbal Journal of Sustainability in Engineering Sciences

The global demand for effective environmental cleanup drives the need for innovative materials and techniques. 3D printing, which can produce complex and customized structures, offers promising solutions. PVC, a common, affordable, and durable polymer resistant to chemicals, is increasingly used for environmental applications. This report reviews recent advances in 3D-printed PVC for water purification, air filtration, and waste management. PVC’s strong properties, combined with the flexibility of 3D printing, enable the development of tailored, efficient components such as membranes, adsorbents, and catalytic supports. Technology also encourages a circular economy by recycling PVC waste into new feedstocks and on-demand, eco-friendly infrastructure. …

Go to article

Smart Universities And Digital Transformation Based On Artificial Intelligence: A Case Of Al-Mustaqbal University, Ahmed Rasol Hasson Dec 2025

Smart Universities And Digital Transformation Based On Artificial Intelligence: A Case Of Al-Mustaqbal University, Ahmed Rasol Hasson

Al-Mustaqbal Journal of Sustainability in Engineering Sciences

Artificial Intelligence (A.I) is a key facilitator of universities procedures. Although the performance of AI has stretch out superior levels in developed countries, it is remain in its insufficiency in a lot of the developing nations. In this state, there is an imperative need to determine the important of adopting AI everywhere on Iraqi universities, due to the continuous utilize of a management old-fashioned systems. This research sight to explore applications that may influence the acceptance and adoption of AI in the Iraqi universities. This is achieved based on a qualitative approach of thematic analysis. The AI applications that were …

Go to article

Experimental Study On Thermal Management Of Conventional Photovoltaic Module Using Hybrid Cooling System, Olufisayo Stephen Babalola, Olatunji Waliu Olademeji, Joseph Bukola Samson Dec 2025

Experimental Study On Thermal Management Of Conventional Photovoltaic Module Using Hybrid Cooling System, Olufisayo Stephen Babalola, Olatunji Waliu Olademeji, Joseph Bukola Samson

Al-Mustaqbal Journal of Sustainability in Engineering Sciences

Photovoltaic (PV) cell junctions are thermally stressed, occasioned by heightened temperature beyond cell operating temperature threshold. This leads to efficiency diminution, which when properly addressed will change the fortune of PV electricity generation; which is more desired for reasons of clean energy and ubiquity of solar flux. Two 80W monocrystalline PV modules were installed at a tilt angle of 17°, south facing, on a stationary rack on top of Obafemi Awolowo University Physics Building. One module’s back surface had a hybrid cooling and the other as control. The PV modules cell temperatures, the ambient temperature, the solar irradiance and the …

Go to article

Curing Duration Optimization To Reduce Shrinkage Cracking In One-Part Alkali-Activated Slag Concrete, A. Sadrmomtazi, H. Zanganeh Dec 2025

Curing Duration Optimization To Reduce Shrinkage Cracking In One-Part Alkali-Activated Slag Concrete, A. Sadrmomtazi, H. Zanganeh

Journal of Sustainable Construction Materials and Technologies

The consequences of inadequate curing on one-part alkali-activated slag concrete (O-AAS) performance relative to ordinary Portland cement concrete (OPCC) have been investigated in this research. Prior to exposure to unsaturated conditions, samples underwent initial moist curing for durations ranging from 24 hours to one year. The testing program included compressive strength evaluation, chloride ion transport analysis, and measurement of free and restrained shrinkage. In addition, cylindrical cores were extracted from concrete columns to assess internal strength and chloride penetration resistance. Under unsaturated exposure, O-AAS exhibited a strength-aging phenomenon, with up to a 37% decrease in compressive strength over 360 days, …

Go to article

Laboratory Investigation And Numerical Modelling Effect Of Carbon Nanotubes On Hot Mix Asphalt Permanent Displacement, Sepehr Saedi, Auwal Usman Nadada Dec 2025

Laboratory Investigation And Numerical Modelling Effect Of Carbon Nanotubes On Hot Mix Asphalt Permanent Displacement, Sepehr Saedi, Auwal Usman Nadada

Journal of Sustainable Construction Materials and Technologies

One of the primary causes of asphalt pavement deterioration is rutting; in contrast, one of the most effective methods to address this type of damage is the use of additives and quality evaluation during the design stages. In this research, laboratory testing and modeling using Abaqus software were employed to validate the laboratory results and predict and assess the potential for rutting. Carbon nanotubes (CNTs) were selected as an additive due to their exceptional mechanical properties and molecular interactions with bitumen. These nanotubes were used to modify the bitumen for the preparation of laboratory samples. The laboratory results from the …

Go to article

Influence Of Early Microwave Curing On Performance Of Slag-Based Geopolymer Mortars, Ahmet Taşdemı̇R, Abdulkadir Çevı̇K Dec 2025

Influence Of Early Microwave Curing On Performance Of Slag-Based Geopolymer Mortars, Ahmet Taşdemı̇R, Abdulkadir Çevı̇K

Journal of Sustainable Construction Materials and Technologies

In this article, an experimental study was conducted to examine the effect of curing time and microwave power on the compressive strength of early microwave-cured slag based geopolymers. Geopolymers have the potential to serve as an environmentally friendly substitute for cement-based building materials, and the use of microwave curing to geopolymers holds the promise of substantial strength improvement. Different microwave curing energies (300 - 800 Watts) were utilized at varying durations (10 - 60 minutes) on demoulded mortar specimens after one day. After that, compressive strength tests were conducted on both the cured and uncured specimens at three different ages: …

Go to article

Design Of A Sequential Logic Control System For Water Recycling In Car Wash Operations For Minimising Utility Costs, Enock W. Nshama, Mussa Iddi Mgwatu Dec 2025

Design Of A Sequential Logic Control System For Water Recycling In Car Wash Operations For Minimising Utility Costs, Enock W. Nshama, Mussa Iddi Mgwatu

Tanzania Journal of Engineering and Technology (TJET)

The car wash sector in Tanzania is expected to expand in the next few years, since the trend of imported cars is increasing. However, the traditional method of washing cars is subjected to water overuse and environmental pollution. This study presents a design of water recycling sequential logic control system to come up with a cost-effective car wash operation aimed at effectively utilising water and electricity resources. Data were collected at 78 car wash stations in Dar es Salaam region to determine water and electricity costs. Data were analysed using MS Excel and Minitab to establish the trend of utility …

Go to article

A Solar Pv System For Industrial Application- A Case Study Of A Cement Industry In Tanzania, Santos Kihwele Dec 2025

A Solar Pv System For Industrial Application- A Case Study Of A Cement Industry In Tanzania, Santos Kihwele

Tanzania Journal of Engineering and Technology (TJET)

This study presents an implementation of the largest behind-the-meter solar photovoltaic (PV) system for a cement industry in Tanzania. The project aims to supply energy for the industry’s own use, without any energy injection into the utility grid, for the purposes of cutting energy-related expenditure and reducing reliance on the utility grid. The project also aims to contribute to the efforts towards the application of renewable and alternative energy sources as a means to reducing carbon footprints, towards achieving the net-zero CO2 emission goal. A comprehensive site assessment was conducted, analyzing factors such as location, land availability, climate data, …

Go to article

The Use Of Local Materials For The Interior Quality Of Swahili Building Design In Tanzania, Luiana Makundi, Jacob Lutta Dec 2025

The Use Of Local Materials For The Interior Quality Of Swahili Building Design In Tanzania, Luiana Makundi, Jacob Lutta

Tanzania Journal of Engineering and Technology (TJET)

Swahili architecture in Tanzania is recognized by spatial capacity to adapt environmental changes. This research explores the role of locally available materials in shaping the interior quality by focusing on functional, aesthetic appeal and supporting sustainable environment. A mixed-methods approach was applied which, involves field surveys, case study and interviews with different local professionals in building industry. Dar-es-Salaam was used as a case study area that was critically analysed to identify construction practices and applications of local materials in building interior spaces. A particular focus was placed on materials durability, aesthetic, ecological, environmental balance and thermal efficiency which seems to …

Go to article

Optimization Of Welding Parameters For Carbon Steel Fabrication: A Trade-Off Between Tensile Strength And Heat-Affected Zone, Melkiory B. Njawala, Simon I. Marandu, Enock W. Nshama Dec 2025

Optimization Of Welding Parameters For Carbon Steel Fabrication: A Trade-Off Between Tensile Strength And Heat-Affected Zone, Melkiory B. Njawala, Simon I. Marandu, Enock W. Nshama

Tanzania Journal of Engineering and Technology (TJET)

This study focused on optimizing gas metal arc welding (GMAW) parameters for AISI 1045 carbon steel to balance the ultimate tensile strength (UTS) and heat affected zone (HAZ) size of the weldment. Using a full factorial design of experiments (27 trials), the influence of welding current, arc voltage, and travel speed on UTS and HAZ size of AISI 1045 carbon steel weldments were investigated. From the analysis of results, using Analysis of variance (ANOVA) technique, the results revealed that current, travel speed and arc voltage contributed 74.41%, 19.05% and 0.04%, respectively, to the total percentage of variations on UTS data. …

Go to article

Combined Optimisation Of Machining Parameters, Tool Wear, Dimensional Errors And Quality Deviations In Multi-Pass Turning Operations, Mussa I. Mgwatu Dec 2025

Combined Optimisation Of Machining Parameters, Tool Wear, Dimensional Errors And Quality Deviations In Multi-Pass Turning Operations, Mussa I. Mgwatu

Tanzania Journal of Engineering and Technology (TJET)

Measurements of on-line tool wear and part dimensional accuracy in machining operations are not readily available in machining shop floor because they involve higher investment such that the decisions of tool wear and part quality for intermediate cutting passes cannot be justified. This paper demonstrates how the optimisation of machining parameters can be made together with tool wear and part quality for turning operations. Two optimisation models were developed for maximum material removal rate and minimum production cost. A theoretical framework was initially presented before the two models were formulated. Input data for the models were adopted from previous studies …

Go to article

A Proposed Urban Branding Strategy As Sustainable Urban Regeneration Policy, A Case Study Of Burj-Al Burullus City, Dalia S. Shebl, Kariman A. Shawky Dec 2025

A Proposed Urban Branding Strategy As Sustainable Urban Regeneration Policy, A Case Study Of Burj-Al Burullus City, Dalia S. Shebl, Kariman A. Shawky

Mansoura Engineering Journal

This study examines the importance of a branding strategy that can be applied in Burj Al-Burullus city to promote and catalyze cultural heritage branding and invest in these facilities for economic and tourism purposes. By measuring the indicators of how urban branding may be achieved. Burj Al-Burullus city is empirically examined using Identity-Based Approach. Based on profound theoretical and analytical studies, the branding concept was studied and analyzed composing a list of indicators for tangible and intangible elements that illustrate the urban branding value of cities. Followed by an analysis of Burj Al-Burullus city using GIS and city data base …

Go to article

Multi-Criteria Decision Making Methods In The Organisations' Maturity Assessment: Prisma And Delphi Techniques Perspectives, Jailos Mrisho Mzumile, Victoria Mahabi, Ismail W. R. Taifa Dec 2025

Multi-Criteria Decision Making Methods In The Organisations' Maturity Assessment: Prisma And Delphi Techniques Perspectives, Jailos Mrisho Mzumile, Victoria Mahabi, Ismail W. R. Taifa

Tanzania Journal of Engineering and Technology (TJET)

Researchers often find it challenging to identify the appropriate Multi-Criteria Decision Making Methods (MCDM) to employ in various research areas that involve prioritising conflicting alternatives or criteria. A systematic literature review was conducted using the PRISMA technique to determine the most frequently and commonly employed MCDM methods in assessing organisational maturity across its functional areas. A total of 120 articles were identified for review, and a bibliometric analysis was conducted to map the relationships within the identified articles using VOSviewer 1.6.20 software. Moreover, frequent content analysis was performed to determine the most frequently employed MCDM methods in assessing an organisation’s …

Go to article

Towards Computational Methods In Medical Data Analysis: From Speech And Text To Imaging, Kristin Qi Dec 2025

Towards Computational Methods In Medical Data Analysis: From Speech And Text To Imaging, Kristin Qi

Graduate Doctoral Dissertations

Early detection of cognitive decline and efficient medical image analysis remain critical challenges in healthcare. Traditional clinical assessments are infrequent and resource-intensive, while everyday speech data and unlabeled medical images remain largely unexploited. This dissertation develops computational methods integrating machine learning and artificial intelligence across speech, text, and imaging modalities to address challenges in medical data processing. For cognitive monitoring, this work first introduces methods using voice assistant systems to collect longitudinal speech data in home environments, demonstrating that incorporating historical session patterns significantly enhances detection of mild cognitive impairment. Building on this foundation, a framework combining large language model-driven …

Go to article

Techno-Economic Analysis Of Captive Solar Power Systems For Tanzania’S Manufacturing Sector: Barriers, Opportunities, And Feasibility, Edson Uhale, Sarah P. Ayeng'o Dec 2025

Techno-Economic Analysis Of Captive Solar Power Systems For Tanzania’S Manufacturing Sector: Barriers, Opportunities, And Feasibility, Edson Uhale, Sarah P. Ayeng'o

Tanzania Journal of Engineering and Technology (TJET)

This study provides a comprehensive techno-economic analysis of the barriers, opportunities, and feasibility of adopting captive solar photovoltaic (PV) systems in Tanzania’s industrial manufacturing sector. Despite Tanzania’s high solar irradiation potential, averaging 4.5 to 7.0 kWh/m²/day, the uptake of captive solar systems remains minimal, with only 2.3 percent of surveyed firms currently using solar energy, primarily for non-productive uses such as security lighting. Using a mixed-methods approach, data were collected from 43 manufacturing firms in the Dar es Salaam and Pwani regions through structured questionnaires, supported by PVSyst simulations and financial modelling to assess two system configurations: grid-connected PV systems …

Go to article

Composition Of Essential Oil From Dried Basil (Ocimum Basilicum L.), Ajargul Abdiganievna Mambetsheripova, Shakhnoza Abduvaxitovna Sultanova, Jasur Esirgapovich Safarov Dec 2025

Composition Of Essential Oil From Dried Basil (Ocimum Basilicum L.), Ajargul Abdiganievna Mambetsheripova, Shakhnoza Abduvaxitovna Sultanova, Jasur Esirgapovich Safarov

Technical science and innovation

Ushbu ishda maydalangan rayhon (Ocimum basilicum L.) o‘simliklaridan olingan efir moylarini (EM) ajratish va tahlil qilishga oid metodologik yondashuv bayon etilgan. Rayhon efir moyi klassik Klevenger apparati yordamida uch soat davomida gidrodistillyatsiya usulida ajratib olindi. Olingan distillyatlar n-geksan bilan ishlov berildi, so‘ngra qoldiq namlikni yo‘qotish maqsadida suvsiz natriy sulfat yordamida degidratatsiya qilindi. Ushbu sharoitda efir moyining chiqishi 0,74–0,81 % oralig‘ida bo‘ldi. Izolyatsiya qilingan moylar rang jihatdan och sariq, harakatchan suyuqliklar bo‘lib, rayhonga xos o‘ziga xos aromatik hidga ega ekanligi aniqlandi. Kimyoviy komponentlarni aniqlash uchun efir moyining sifat va miqdoriy tarkibi gaz xromatografiya-mass-spektrometriyasi (GXM-S) usulida o‘rganildi. Tahlillar Agilent 5975C inert MSD/7890A …

Go to article

Effect Of Niobium Addition On Corrosion Behavior, Mechanical Properties, And Microstructures Of U6zr Alloys In An Aerated Environment, Masrukan Masrukan, Djati Handoko, Dede Djuhana, Rohmad Sigit, M. Husna Al Hasa, Wisnu Ari Adi, Siti Mardiah Dec 2025

Effect Of Niobium Addition On Corrosion Behavior, Mechanical Properties, And Microstructures Of U6zr Alloys In An Aerated Environment, Masrukan Masrukan, Djati Handoko, Dede Djuhana, Rohmad Sigit, M. Husna Al Hasa, Wisnu Ari Adi, Siti Mardiah

Makara Journal of Science

The effect of Nb addition on the corrosion behavior of U–6Zr alloys within an aerated, demineralized water (DW) environment (pH 5.61) and its correlation of this addition with the mechanical and microstructural properties of the alloys were investigated. The U–6Zr–xNb alloys (x = 1, 4, and 7 wt.%) were synthesized by arc-melting U, Zr, and Nb. Additionally, the samples were mounted and polished, after which they were subjected to electrochemical corrosion analysis using a potentiostat. This evaluation was conducted in a DW medium (pH 5.6), representing an aerated atmosphere, at room temperature (27°C) and a potentiodynamic scan rate of 1 …

Go to article

Synthesis Of Schiff Base Based On Aminopolysaccharides A Chitosan Apis Mellifera With Salicylic And Glutaraldehydes, Alisher Mengliev Dec 2025

Synthesis Of Schiff Base Based On Aminopolysaccharides A Chitosan Apis Mellifera With Salicylic And Glutaraldehydes, Alisher Mengliev

Technical science and innovation

Chitosan is a linear aminopolysaccharide. Using methods of chemical modification of chitosan, a number of new biologically active materials have been created. The main interest in these products is due to the preservation of the basic physicochemical and biological properties of the original polymer and the acquisition of new properties depending on the nature of the introduced groups. Modified chitosan can be used in various fields such as drug delivery, textiles, wastewater treatment and a number of biomedical applications. The purpose of this work is to extract chitosan from the remains of ApisMellifera bees and synthesize a Schiff base with …

Go to article

First Prev Next Last