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Low-‎Computational Adaptive Mpc Algorithmization Strategy For Over ‎And ‎Undershoots ‎Instantaneous ‎Water ‎Heaters Stability, Ismael Ehtiwesh May 2025

Low-‎Computational Adaptive Mpc Algorithmization Strategy For Over ‎And ‎Undershoots ‎Instantaneous ‎Water ‎Heaters Stability, Ismael Ehtiwesh

Seatific Journal

Tankless gas Hot Water users' ‎comforting perception ‎is severely affected by ‎sudden ‎changes ‎in temperature ‎apart from ‎the ‎desired temperature. The instability of the ‎water ‎temperature ‎with ‎overshoots and ‎undershoots is the ‎most common disadvantage ‎that ‎appears ‎mainly ‎because of the sudden changes in ‎the water flow demanded by ‎users ‎and ‎the ‎response delays inherent to ‎the heating system. ‎Classical ‎controllers for heat ‎cells have ‎difficulties in ‎responding ‎to ‎temperature ‎instability in a timely manner because ‎they do not ‎have the ‎capacity to anticipate ‎the ‎effects ‎of sudden variations in water flow ‎rate. ‎The ‎model ‎predictive control with adaptive function …

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Taper Ratio Influence On The Performance Of 3-D Cavitating Hydrofoils Moving Under Free Surface, Şakir Bal May 2025

Taper Ratio Influence On The Performance Of 3-D Cavitating Hydrofoils Moving Under Free Surface, Şakir Bal

Seatific Journal

Taper ratio influence on the performance of three-dimensional (3-D) cavitating hydrofoils moving steadily under a free water surface has been investigated numerically. An iterative boundary element method (IBEM) developed before has been modified and extended to solve this problem. The fluid is assumed to be inviscid, incompressible and the flow irrotational. All variables and equations are made non-dimensional to achieve a consistent numerical scheme and a very quick convergence. The IBEM solves the hydrofoil problem and free surface problem separately with the effects of each other via their potential values in an iterative way. Both the 3-D hydrofoil surface and …

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Optimizing Power Of A Variable-Temperature Heat Reservoir Brayton Cycle For Space Nuclear Power Plant, Tan Wang, Lingen Chen, Yanlin Ge, Shuangshuang Shi, Huijun Feng May 2025

Optimizing Power Of A Variable-Temperature Heat Reservoir Brayton Cycle For Space Nuclear Power Plant, Tan Wang, Lingen Chen, Yanlin Ge, Shuangshuang Shi, Huijun Feng

Seatific Journal

A variable-temperature heat reservoir endoreversible simple closed Brayton cycle (CBC) model for space nuclear power plant is established. Thermal efficiency (TEF) and power output (POW) are derived. When total heat transfer area of radiator panel and two heat exchangers (HEXs) is fixed, the maximum POW ( ) is obtained by optimizing area distributions ( , and ) among two HEXs and radiator panel, the double maximum POW ( ) is obtained by optimizing inlet temperature ( ) of cooling fluid in low temperature heat sink, and the triple maximum POW ( ) is obtained furtherly by optimizing thermal capacity rate …

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Thermodynamic Aspects Of Solid Propellant Gas Generator For Aircraft Application, Bhupesh Parate, Pune N/A May 2025

Thermodynamic Aspects Of Solid Propellant Gas Generator For Aircraft Application, Bhupesh Parate, Pune N/A

Seatific Journal

This research work present mainly on various thermodynamic aspects of solid propellant gas generator for aircraft application. A gas generating device is hot gas generator that creates high temperature and pressure combustion gas on burning of the propellant inside the cartridge case. Thermodynamics is the branch of science which deals with energy transformation into work and vice versa. These devices are filled with energetic materials (EMs) and used to perform a critical operation in an emergency under adverse conditions. It releases the energy very quickly. Gas generator has a large number of applications and its demand is continuously increasing in …

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First And Second Law Assessment Of A Solar Tower Power Plant For Electrical Power Production And Error Analysis, Mohd Parvez, Syed Mohammed Mahmood, Osaman Khan May 2025

First And Second Law Assessment Of A Solar Tower Power Plant For Electrical Power Production And Error Analysis, Mohd Parvez, Syed Mohammed Mahmood, Osaman Khan

Seatific Journal

The primary objective of this study is to investigate the solar-powered combined-cycles system in order to convert the available solar energy to its truest potential and generate electrical power. This combined-cycles system consists of solar power tower, steam turbine cycle, and organic Rankine cycle. The study focused on recovering the waste heat which is obtained from the exit of a steam turbine and uses it to operate the Rankine cycle by using the refrigerants, R-113, R-11, and R-1233zd. The analysis also predetermines the effects of solar irradiance for a mass flow rate of molten salt and steam, turbine inlet pressure, …

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A Literature Survey On Exergy Analyses Of Marine Diesel Engine And Power Systems, Burhan Furkan Göksel, Turgay Köroğlu May 2025

A Literature Survey On Exergy Analyses Of Marine Diesel Engine And Power Systems, Burhan Furkan Göksel, Turgay Köroğlu

Seatific Journal

The oil crisis in the world has led countries to seek an alternative fuel that can replace fossil fuels. In addition, the fact that global warming, which is one of the most important problems for the world, has reached significant levels, has led to an increase in studies on greenhouse gas emissions and the efficient use of energy. Every effort to increase efficiency contributes to both environmental and economic improvements. Considering this situation, the study was compiled by examining the studies on energy and exergy analysis related to diesel engines and marine diesel power systems in the literature. As a …

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Finned Wafer Baking Plates For Heat Transfer And Distribution, Márcio Carzino, George Stanescu, Marcelo Errera May 2025

Finned Wafer Baking Plates For Heat Transfer And Distribution, Márcio Carzino, George Stanescu, Marcelo Errera

Seatific Journal

Wafer baking is a recognized process in food industry, and there is a large worldwide demand to develop wafer baking equipment for the current trends, namely, high-productivity, high quality with lower wastes and lower energy expenditure. This work deals with the thermal design of the heating side of flat wafer baking plates in gas ovens seeking less heat, less baking time and better quality control. The key feature under study is the thermal interaction between the gas flames and the baking plates. Heat flows mostly by thermal radiation to the back of the baking plates which design is under study. …

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Maximum Entropy Production And Constructal Law: Variable Conductance And Branched Flow, Phillip Johnson May 2025

Maximum Entropy Production And Constructal Law: Variable Conductance And Branched Flow, Phillip Johnson

Seatific Journal

Within the scope of modern thermodynamics, several new principles have been advanced. Yet a coherent picture has not yet fully emerged beyond classical thermodynamics, in part because of the disparate nature of these principles. This work analyzes two such principles, that of maximum entropy production and also the constructal law. These ideas are compared in two examples scenarios, atmospheric convection and riverbed generation. It is shown that both ideas utilized a flow network with variable conductivity, particularly that of a branched system. Comparison is made to show underlying shared principles.

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Fog Collection - Materials, Techniques And Affecting Parameters - A Review, Abdullah A. Elshennawy, Mohamed M. Awad, Magdy Y. Abdelaal, Ahmed M. Hamed May 2025

Fog Collection - Materials, Techniques And Affecting Parameters - A Review, Abdullah A. Elshennawy, Mohamed M. Awad, Magdy Y. Abdelaal, Ahmed M. Hamed

Seatific Journal

Water scarcity has shown a great challenge during the past decades with millions suffering from lack of potable water. Although, people try to benefit from the water naturally existing in air by two sources: fog and humid air. In this paper, we mainly allot the work on fog water. Fog collection is undergone using fog mesh collectors. There are lots of methods to rate the quality of fog water collection. Most used method is the quantity of water collected in kilograms for a one square meter harvester mesh per one hour. However, sometimes water contact angle on a flat surface …

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Freedom And Evolution In Science, Adrian Bejan May 2025

Freedom And Evolution In Science, Adrian Bejan

Seatific Journal

This article is about evolutionary design and freedom and is based on my new book, Freedom and Evolution: Hierarchy in Nature, Society and Science [1]. There is a lot to say about this broad subject, therefore I’ve reduced it to the topics of thermodynamics, freedom and evolution, diversity and hierarchy, and science and freedom. First, I will present the terminology, which will be followed by the applications of the evolution of cooling technology for high-density heat-generating components in a packet. Finally, I will show why this book is important for you, the reader, as well as for the practitioner.

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Ships And Sea Structures With A Hydrodynamic Perspective, Odd Magnus Faltınsen May 2025

Ships And Sea Structures With A Hydrodynamic Perspective, Odd Magnus Faltınsen

Seatific Journal

This article concentrates on aspects of marine technology such as fish cages, ships, sea structures, and marine operations. It addresses net cages and closed-containment fish farms through sloshing while discussing both displacement and high-speed vessels. The ship topics under consideration include CO2 emissions in waves, dynamic instabilities, whipping and springing, maneuvering in waves, and sloshing-induced slamming in prismatic LNG tanks. The considered sea structures include offshore platforms used for gas and oil exploration and production and for renewable energy. The article also discusses lowering and lifting of objects through the free surface from ships and addresses the accidental dropping of …

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Development An Experimental Method To Investigate Hydrodynamic Drag, Serkan Türkmen, Mehmet Atlar, Irma Yeginbayeva May 2025

Development An Experimental Method To Investigate Hydrodynamic Drag, Serkan Türkmen, Mehmet Atlar, Irma Yeginbayeva

Seatific Journal

Newcastle University [UNEW] has enhanced the test section of their existing water channel facility. The new measurement section is utilized to measure pressure drop (and hence frictional drag) across a standard flat test panel (length=0.6 m; width=0.22 m). The panel can be tested as cleanly coated as well as exposed to light biofilm growth. Based on measured pressure gradients, the skin friction coefficients of these surfaces are calculated and compared with other well-established methods (i.e., measuring the boundary layer of similar surfaces using a [LDV] system in UNEW’s Emerson Cavitation Tunnel [ECT], to evaluate the pressure drop methodology. This paper …

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Performance Evaluation Of Spectral Wave Model Caused By Era-Interim, Era5, And Cfsr Wind Fields In The Black Sea, Fulya Islek, Yalçın Yüksel, Adem Özdemir May 2025

Performance Evaluation Of Spectral Wave Model Caused By Era-Interim, Era5, And Cfsr Wind Fields In The Black Sea, Fulya Islek, Yalçın Yüksel, Adem Özdemir

Seatific Journal

The main objective of the present study is to evaluate the performance of the MIKE 21 SW (Spectral Wave) in a semi-closed basin (Black Sea). Wind data were obtained from ECMWF ERA-Interim, ECMWF ERA5, and NCEP CFSR. The wave model was calibrated and validated with wave measurements recorded at seven different stations along the Black Sea coastlines. In the calibration, several different physical parameters were tested to determine the optimal model settings, and the whitecapping parameter (Cds) was more influential than the bottom friction parameter (kn), wave breaking parameter (γ), and nonlinear wave-wave interactions in the prediction of the Black …

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The Dynamics Of Human Society Evolution: An Energetics Approach, Ram Chandra Poudel, Jon G. Mcgowan May 2025

The Dynamics Of Human Society Evolution: An Energetics Approach, Ram Chandra Poudel, Jon G. Mcgowan

Seatific Journal

Human society is an open system that evolves by coupling with various known and unknown (energy) fluxes. How do these dynamics unfold precisely? Energetics may provide further insights. We expand on Navier-Stokes’ approach to study non-equilibrium dynamics in a field that evolves over time. Based on social fi eld th eory, an induction of th e cl assical fie ld theories, we define social force, social energy, and the Hamiltonian of an individual in society. The equations for the evolution of an individual and society are sketched out based on the time-dependent Hamiltonian that includes power dynamics. We demonstrate in …

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Metamodels For Seakeeping Assessment Of Fishing Vessels, Giorgio Trincas, Roberto Rocchi May 2025

Metamodels For Seakeeping Assessment Of Fishing Vessels, Giorgio Trincas, Roberto Rocchi

Seatific Journal

The most significant goals of this paper are: (i) to provide additional insight on the influence of hull form parameters on seakeeping performance of typical Mediterranean fishing vessels; (ii) to develop efficient and reliable metamodels for fast and reliable evaluation of seakeeping performance in am multiattribute decision-making environment; (iii) to facilitate and speed up the selection of the design with the best possible seakeeping performance at conceptual design stage. To enhance the accuracy and applicability of predictions of seakeeping characteristics and to find out guidelines for design scope, new metamodels have been developed from an extended database of 57 cases, …

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Integration Of The Kalina Cycle In A Tanker Ship And Analysis Of Its Effect On Energy Efficiency, Erkin Yücel, Begüm Doganay, Fikret Gökalp, Nihat Baycık, Yalçın Durmuşoğlu May 2025

Integration Of The Kalina Cycle In A Tanker Ship And Analysis Of Its Effect On Energy Efficiency, Erkin Yücel, Begüm Doganay, Fikret Gökalp, Nihat Baycık, Yalçın Durmuşoğlu

Seatific Journal

In terms of energy efficiency, one of the main methods to avoid waste of resources is to utilize waste heat energies. The Kalina cycle is used as a bottom cycle in many areas and is used for the generation of electrical energy from waste heat energy. About 90% of world trade is carried out by sea transport. For this reason, the recovery of waste heat released into the atmosphere from ships is great importance in terms of both global pollution and energy efficiency. In this study, the recovery of waste heat energy from the exhaust gas at a temperature of …

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Numerical Investigation Of Flow Over Tandem And Side-By-Side Cylinders, Arif Mentese, Seyfettin Bayraktar May 2025

Numerical Investigation Of Flow Over Tandem And Side-By-Side Cylinders, Arif Mentese, Seyfettin Bayraktar

Seatific Journal

In the present paper, two-dimensional unsteady flows over circular cross-section cylinders are analyzed numerically. The effects of placement of the cylinders are investigated for two different arrangements: tandem and side-by-side. Several turbulence models are tested, and it is found that Spalart-Allmaras turbulence model is the best among one- and two-equation turbulence models. The most appropriate time step, which is one of the important parameters in unsteady simulations, is found as 0.002 seconds. After successful validations, the cylinders are positioned as side-by-side and tandem. The effects of the arrangement on flow regime, drag coefficient, lift coefficient and Strouhal number are presented …

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Computational Prediction Of Hydrodynamic Coefficients For Heave Motion, Ferdi Çakıcı, Emre Kahramanoğlu, Süleyman Duman, Ahmet Dursun Alkan May 2025

Computational Prediction Of Hydrodynamic Coefficients For Heave Motion, Ferdi Çakıcı, Emre Kahramanoğlu, Süleyman Duman, Ahmet Dursun Alkan

Seatific Journal

In this study, the hydrodynamic coefficients associated with heave motion are obtained by using unsteady Reynolds-averaged Navier-Stokes (URANS) approach. The well-known Wigley hull is selected for the calculations of uncoupled added mass and damping coefficients (A33, B33) in deep water. Numerical simulations are performed for six different oscillation frequencies at the Froude number 0.3. First, the 3D ship model is forced in the heave direction with certain frequencies and then the hydrodynamic coefficients are computed with the help of Fourier series expansion. Numerical results are compared with those obtained by the experiments and strip theory. The verification and validation study …

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Performance Analyses And Optimization Of A Regenerative Supercritical Carbon Dioxide Power Cycle With Intercooler And Reheater, Asım Sinan Karakurt, Ibrahim Furkan Ozel, Semih İskenderli May 2025

Performance Analyses And Optimization Of A Regenerative Supercritical Carbon Dioxide Power Cycle With Intercooler And Reheater, Asım Sinan Karakurt, Ibrahim Furkan Ozel, Semih İskenderli

Seatific Journal

Supercritical CO2 (sCO2) power cycles play an important role in energy production as they are more efficient and more compact than conventional energy production systems. Therefore, they are widely used in different systems such as nuclear systems, renewable energy systems, heat recovery systems, fossil power plants, submarines, and some commercial and navy ships that produce a wide range of power operating in different temperature ranges. It has become very popular especially in recent years due to its widespread use and technical capabilities. This study analyses the effects of some design parameters (pressure ratio and temperature ratio) on the performance criteria …

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Scalable Real-Time Bias Detection And Mitigation In Ai-Based Application Evaluation, Puneet Mahajan May 2025

Scalable Real-Time Bias Detection And Mitigation In Ai-Based Application Evaluation, Puneet Mahajan

Defensive Publications Series

Employing artificial intelligence (AI) for evaluating AI applications poses a number of challenges, including the detection and mitigation of various biases. This disclosure describes a multi-faceted approach for dynamically identifying and mitigating biases in AI-based evaluation. Potential biases can be detected by analyzing inconsistencies and discrepancies between the outputs of the primary and auxiliary evaluator models via an ensemble learning framework, optionally assisted by human evaluators. Specific adversarial examples can be generated and used to identify hidden biases in the primary AI evaluator. Detected biases can be mitigated by employing reinforcement learning to make continuous real-time adjustments to counteract the …

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Expanding Library Publishing Services Beyond Campus: Engaging The Greater Community Through Library Publishing, Kyle Morgan May 2025

Expanding Library Publishing Services Beyond Campus: Engaging The Greater Community Through Library Publishing, Kyle Morgan

Cal Poly Humboldt Library

No abstract provided.

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Faculty Authors And Creators Reception 2025 - Bibliography, Victoria Karnes May 2025

Faculty Authors And Creators Reception 2025 - Bibliography, Victoria Karnes

Faculty Authors and Sponsored Grant Recipients Reception Bibliographies

A bibliography compiled by the University Library of the publications featured at the annual Faculty Authors and Creators Reception held May 8th, 2025 at Governors State University.

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Quantitative Ai Risk Assessments: Opportunities And Challenges, David Piorkowski, Michael Hind, John Richards May 2025

Quantitative Ai Risk Assessments: Opportunities And Challenges, David Piorkowski, Michael Hind, John Richards

Seton Hall Journal of Legislation and Public Policy

No abstract provided.

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The Ttp As An Effective Response To Sffa, Michael Asante-Appiah May 2025

The Ttp As An Effective Response To Sffa, Michael Asante-Appiah

Seton Hall Journal of Legislation and Public Policy

No abstract provided.

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Existence Of Traveling Waves In A Predator-Prey Invasion Model With Nonlocal Dispersal And Delayed Effects In Dispersal, Austin Simms May 2025

Existence Of Traveling Waves In A Predator-Prey Invasion Model With Nonlocal Dispersal And Delayed Effects In Dispersal, Austin Simms

Theses and Dissertations

We investigate the existence and stability of traveling wave solutions in a predator--prey population model that incorporates both nonlocal dispersal and time-delayed interactions. The problem arises when species distributions and feeding or reproduction processes do not respond instantaneously, but rather exhibit lags in space and time. Our aim is to understand how these delays and nonlocal effects impact the wavefront speed and the eventual establishment of a predator population in previously prey-dominated regions. To accomplish this, we derive a PDE--integro--delay system from ecological considerations of prey self-regulation, predator ratio dependence, and jump-type dispersal kernels. We then employ a traveling wave …

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Sirt6 Deficiency Promotes Senescence And Age-Associated Intervertebral Disc Degeneration In Mice, Pranay Ramteke, Bahiyah Watson, Mallory Toci, Victoria Tran, Shira N Johnston, Maria Tsingas, Ruteja Barve, Ramkrishna Mitra, Richard Loeser, John Collins, Makarand Risbud May 2025

Sirt6 Deficiency Promotes Senescence And Age-Associated Intervertebral Disc Degeneration In Mice, Pranay Ramteke, Bahiyah Watson, Mallory Toci, Victoria Tran, Shira N Johnston, Maria Tsingas, Ruteja Barve, Ramkrishna Mitra, Richard Loeser, John Collins, Makarand Risbud

Department of Orthopaedic Surgery Faculty Papers

Intervertebral disc degeneration is a major risk factor contributing to chronic low back and neck pain. While the etiological factors for disc degeneration vary, age is still one of the most important risk factors. Recent studies have shown the promising role of SIRT6 in mammalian aging and skeletal tissue health, however its role in the intervertebral disc health remains unexplored. We investigated the contribution of SIRT6 to disc health by studying the age-dependent spinal phenotype of mice with conditional deletion of Sirt6 in the disc (AcanCreERT2; Sirt6fl/fl). Histological studies showed a degenerative phenotype in knockout mice …

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Health Equity And Social Determinants Of Health Nurse Education, Jacqueline Arana Clements May 2025

Health Equity And Social Determinants Of Health Nurse Education, Jacqueline Arana Clements

Walden Dissertations and Doctoral Studies

The primary care setting provides integrated healthcare services where nurses address many healthcare needs, develop patient relationships, and practice in the context of family and community. To provide comprehensive care, nurses must complete a social determinants of health screening that addresses the social factors that impact clinical outcomes. In 2021, the National Academies of Sciences, Engineering, and Medicine published a nursing education strategy on educating nurses on social determinants of health. This project aimed to develop a staff education program to prepare primary care nurses on the concepts and terminology encompassing social determinants of health, identifying the severity of health …

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Sirt6 Deficiency Promotes Senescence And Age-Associated Intervertebral Disc Degeneration In Mice, Pranay Ramteke, Bahiyah Watson, Mallory Toci, Victoria A Tran, Shira Johnston, Maria Tsingas, Ruteja A Barve, Ramkrishna Mitra, Richard F Loeser, John A Collins, Makarand V Risbud May 2025

Sirt6 Deficiency Promotes Senescence And Age-Associated Intervertebral Disc Degeneration In Mice, Pranay Ramteke, Bahiyah Watson, Mallory Toci, Victoria A Tran, Shira Johnston, Maria Tsingas, Ruteja A Barve, Ramkrishna Mitra, Richard F Loeser, John A Collins, Makarand V Risbud

2020-Current year OA Pubs

Intervertebral disc degeneration is a major risk factor contributing to chronic low back and neck pain. While the etiological factors for disc degeneration vary, age is still one of the most important risk factors. Recent studies have shown the promising role of SIRT6 in mammalian aging and skeletal tissue health, however its role in the intervertebral disc health remains unexplored. We investigated the contribution of SIRT6 to disc health by studying the age-dependent spinal phenotype of mice with conditional deletion of Sirt6 in the disc (Acan

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On-The-Go Handbag: Sustainable & Biodegradable Handbag Design, Sydney Neff May 2025

On-The-Go Handbag: Sustainable & Biodegradable Handbag Design, Sydney Neff

Theses

Handbags have been an ever-present accessory in society for centuries, coming to symbolize not only fashion trends but status and femininity. They have evolved to hold extreme significance, being able to show a snapshot of who a woman is by taking a simple look inside. Purses have become a companion for consumers in many ways, accompanying them throughout important days and events, providing talking points, and even compliments for the user. However, these constant companions come at a cost. The fashion industry and the accessories produced within are an immense cause of environmental pollution. This provides an ever-present internal fight …

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Benefits And Applications Of Learning With Virtual Reality, Michael W. Timm May 2025

Benefits And Applications Of Learning With Virtual Reality, Michael W. Timm

Honors Program: Senior Projects (Public)

Education is a fundamental pillar of society. It equips students for employment and interpersonal relations. Virtual reality (VR) has emerged as a transformative technology in the field of education. The aim of this paper is to synthesize existing research in order to determine the benefits of utilizing virtual reality in a variety of education settings, such as K-12 classrooms, universities, and workplace training. This paper observes significant benefits of virtual reality in constructivist and experiential learning, gamified learning, and tailored practice. This analysis also finds that virtual reality is advantageous for educational accessibility, particularly for absentee students and impoverished students. …

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