Digital Commons Network^™

Advances And Opportunities In Unraveling Cold-Tolerance Mechanisms In The World's Primary Staple Food Crops, Sofora Jan, Sachin Rustgi, Rutwik Barmukh, Asif B. Shikari, Brenton Leske, Amanuel Bekuma, Darshan L. Sharma, Wujun Ma, Upendra Kumar, Uttam Kumar, Abhishek Bohra, Rajeev K. Varshney, Reyazul Rouf Mir

Grain and Other Field Crops Research Articles

Temperatures below or above optimal growth conditions are among the major stressors affecting productivity, end-use quality, and distribution of key staple crops including rice (Oryza sativa), wheat (Triticum aestivum), and maize (Zea mays L.). Among temperature stresses, cold stress induces cellular changes that cause oxidative stress and slowdown metabolism, limit growth, and ultimately reduce crop productivity. Perception of cold stress by plant cells leads to the activation of cold-responsive transcription factors and downstream genes, which ultimately impart cold tolerance. The response triggered in crops to cold stress includes gene expression/suppression, the accumulation of sugars upon chilling, and signaling molecules, among …

Reference Governor For Air-Conditioner, Ganiyu E. Azeez

Mechanical Engineering ETDs

Advanced control for heating ventilation and air-conditioning (HVAC) systems has primarily focused on optimizing energy efficiency. However, ensuring the safe and reliable operation of HVAC equipment is another crucial control objective. This Thesis presents a reference governor (RG) that can augment existing energy-optimized controllers with the capability to enforce constraints to ensure safe and reliable operation. The RG makes minimal adjustments to the reference room temperature setpoint to ensure that the refrigerant entering the compressor is super-heated, thereby preventing potential damage. Designing the RG requires synthesizing a constraint admissible positive invariant (CAPI) set which characterizes the subset of states for …

11/13/2023 Meeting, Varina A. Kosovich

Meeting Minutes

No abstract provided.

Modeling Low Energy Demand Futures For Buildings: Current State And Research Needs, Alessio Mastrucci, Leila Niamir, Benigna Boza-Kiss, Nuno Bento, Dominik Wiedenhofer, Jan Streeck, Shonali Pachauri, Charlie Wilson, Souran Chatterjee, Felix Creutzig, Srihari Dukkipati, Wei Feng, Arnulf Grubler, Joni Jupesta, Poornima Kumar, Giacomo Marangoni, Yamina Saheb, Yoshiyuki Shimoda, Bianka Shoai-Tehrani, Yohei Yamaguchi, Ruijven B Van

School of Geography, Earth and Environmental Sciences

Buildings are key in supporting human activities and well-being by providing shelter and other important services to their users. Buildings are, however, also responsible for major energy use and greenhouse gas (GHG) emissions during their life cycle. Improving the quality of services provided by buildings while reaching low energy demand (LED) levels is crucial for climate and sustainability targets. Building sector models have become essential tools for decision support on strategies to reduce energy demand and GHG emissions. Yet current models have significant limitations in their ability to assess the transformations required for LED. We review building sector models ranging …

The Automated Wheelchair, Jonathan Doksa Kamba Ngoyi

Honors College Theses

Automation refers to the use of technology to execute tasks through programmed instructions and automated control mechanisms to ensure accurate execution. This minimizes human involvement and encompasses various fields, including business process automation. A notable form of automation is assistive technology, which refers to any device or software that enhances individuals' learning, communication, or overall functionality. This can range from advanced tools like computers to simpler aids like walking sticks. Assistive technology aims to promote inclusivity and participation, particularly among individuals with disabilities, the elderly, and those with non-communicable diseases.

The Automated Airport Wheelchair is a culmination of prior projects …

Evaluation And Improvement Of Processes And Metrics In A Dual Credit Program, Kristian E. Fischer

Education Theses and Dissertations

This dissertation used convergent mixed methods design in a program implementation evaluation of a dual credit program. A binary logistic regression was performed on dual credit enrollment persistence. A stakeholder survey was deployed to parents, administrators, instructors and counselors associated with the dual credit program. A full review of district documents related to dual credit was included as part of the qualitative component. The results of the regression indicated non-significance in the predictor variables for the dependent variable of dual credit persistence. The emergent themes from the survey included concerns about student readiness for dual credit coursework and a need …

Cost Analysis Of Adsorption Based Air Capture Of Co2, Mona Muzammil, Muzammil Arshad, Muazzam Arshad

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Chemistry)

Carbon dioxide (CO2) capture and conversion to value added products, such as chemicals, polymers, and carbon-based fuels represents a promising approach to transform a potential threat to the environment into a value-added product for long term sustainability. Emerging Carbon Capture Technologies: Towards a Sustainable Future provides a multidisciplinary view of the research that is being carried out in this field, covering materials and processes for CO2 capture and utilization and including a broad discussion of the impact of novel technologies in carbon capture on the energy landscape, society and climate. Of interest to students, researchers and professionals in industries related …

Differential Impact Of Blood Pressure Control Targets On Epicardial Coronary Flow After Transcatheter Aortic Valve Replacement, Brennan Vogl, Alejandra Chavez-Ponce, Adam Wentworth, Eric Erie, Pradeep Yadav, Vinod H. Thourani, Lakshmi Prasad Dasi, Brian Lindman, Mohamad Alkhouli, Hoda Hatoum

Michigan Tech Publications

Background: The cause for the association between increased cardiovascular mortality rates and lower blood pressure (BP) after aortic valve replacement (AVR) is unclear. This study aims to assess how the epicardial coronary flow (ECF) after AVR varies as BP levels are changed in the presence of a right coronary lesion. Methods: The hemodynamics of a 3D printed aortic root model with a SAPIEN 3 26 deployed were evaluated in an in vitro left heart simulator under a range of varying systolic blood pressure (SBP) and diastolic blood pressure (DBP). ECF and the flow ratio index were calculated. Flow index value …

2023-11-13 Departmental Faculty Numbers, Morehead State University. Faculty Senate.

Faculty Senate Records

Departmental faculty statistics as of November 13, 2023.

Compatibility Investigation Of Waste Plastics In Bitumen Via A Molecular Dynamics Method, Hui Yao, Xin Li, Hancheng Dan, Qingli Dai, Zhanping You

Michigan Tech Publications

The compatibility between waste plastic polymers and bitumen is the most challenging issue hindering the improvement of modified bitumen performance. The current practice of recycled waste plastics includes the use of polyvinyl chloride (PVC), polypropylene (PP), polyethylene (PE), etc. This study was designed to investigate the compatibility of different waste plastic polymers with bitumen binders by conducting molecular dynamics (MD) simulations at different temperatures. The molecular models of these materials were constructed in this study for the compatibility analysis, and they include the base bitumen, polymers (PVC, PP, and PE), polymer- bitumen blending systems. Using the output and related calculations …

The Effectiveness Of Instructional Software On The Achievement Of Eighth Basic Grade Students In The Computer Course In Jordan فاعلية برمجية تعليمية في تحصيل طلبة الصف الثامن الأساسي في مادة الحاسوب في الأردن, Rawan Sadiq Haraz Allah, Majed A. Abu Jaber

Jordanian Educational Journal

Abstract:

The objective of this study was to explore the effectiveness of instructional software on the achievement of 8th basic grade students in the computer course in Jordan. The study followed the quasi-experimental methodology. The subjects consisted of (60) 8th grade students at Makkah basic school for girls in Al-Zarqa Governorate in Jordan, during the first semester 2019/2020.

Two sections were selected and were randomly divided into two groups, one experimental group consisting of 30 female students who studied using instructional software, and the other control group consisting of 30 students who studied in the traditional way.

To achieve the …

The Degree To Which Kindergarten Principals In The Green Line Possess Administrative Competencies And Their Relationship To The Level Of Quality Management Implementation درجة امتلاك مديرات رياض الأطفال داخل الخط الأخضر للكفايات الإدارية وعلاقتها بمستوى تطبيق إدارة الجودة, Sana Mohamed Aladin, Ali Mohammad Jubran, Ali Ahmad Barakat

Jordanian Educational Journal

Abstract:

The study aimed to shed light on the degree to which kindergarten principals within the Green Line possess administrative competencies, and to identify the correlation between the availability of administrative competencies among kindergarten principals within the Green Line, and the level of application of quality management in their work. To achieve the aims of the study and to answer its questions, a relational descriptive methodology was used, and the study sample was chosen in a simple random way representing the study population and included (600) kindergarten principals, (60) complementary nurses, (59) female counselors and (27) educational supervisors, who showed …

Study Skills And Their Relationship With Locus Of Control Among The Students Of The First Secondary Class In The Schools Of Al-Tafila Governorate مهارات الاستذكار وعلاقتها بمركز الضبط لدى طلبة الصف الأول الثانوي في مدارس لواء قصبة محافظة الطفيلة25, Khalaf Atiya Al-Obaiyat, Ahmed Abed- Altef Abu Asad

Jordanian Educational Journal

Abstract:

This study aimed at investigating the relationship between the study skills and locus of control among the students of the first secondary class in the schools of Al-Tafila Governorate, in order to achieve the study objectives, a simple random sample that consisted of (160) male and female students was chosen from the first secondary class. Two scales were developed: the scale of study skills, and the scale of locus of control. Their psychometric properties were verified. The study results showed that there was a positive correlational relationship between study skills and locus of control and that students differ in …

Urban Flood And Its Correlation With Built-Up Area In Semarang, Indonesia, Risty Khoirunisa, Bambang Darmo Yuwono

Smart City

The expansion of urban areas is closely related to environmental problems such as changes in land use, flooding, and land subsidence. Semarang is a city with reasonably rapid development and a high land change experiencing floods and land subsidence. This paper will discuss land transformation caused by urban growth and its implications. It uses a combination of geospatial techniques and cloud computing Google Earth Engine (GEE) to carry out mapping over a large area without being constrained by computer capabilities. This study found that the built-up area in 2010 occupied 36.27% of the city, and it went up to 59.79% …

Influence Of Deep Excavation On Behavior Of Adjacent Single Pile: Effect Of Pile Location, Mostafa Ibrahim Lotfy, Marwan Shahin, Ahmed Farouk

Journal of Engineering Research

Even when located atop piles, deep excavations might result in Settlement and harm to nearby buildings. This work aims to investigate single-pile reactions to deep-braced excavation-induced soil movement in soft clay with a sand covering. The main goal of the experiment is to determine how a vertical single pile responds to produced axial force, lateral deflection, induced bending moment, and pile settlement. The pile's diameter (dp) is 5 meters, and its embedded length (Lp) is 22 meters. The pile horizontally from the diaphragm wall is situated 3.75 meters (.25 He). The pile was simulated using the "Embedded pile" structural element. …

Improving The Environmental And Design Performance Of Building Facades Using “Artificial Intelligence”, Nervana Osama Hanafy

Journal of Engineering Research

The construction sector has changed thanks to the use of artificial intelligence in architectural design. To investigate abstract conceptual concepts and produce an infinite number of design ideas based on mathematically determined criteria, AI offers a wide variety of computational methodologies. An exploratory examination of the development of AI in architectural design is presented in this paper. Since its inception as a tool for functional optimization, Artificial Intelligence has evolved into an unmatched source of design inspiration. The mechanism technology is needed to deliver the best lighting possible, depending on the design requirements. The following steps are taken during the …

Analytical Study Of Lipped Cold-Formed Steel Sections With Edge-Stiffened Hole Subjected To Axial Compression Load, Shrouck Mohammed Fouad, Mahmoud H. El-Boghdadi, Nashwa Mohamed Yossef

Journal of Engineering Research

Cold-formed steel (CFS) have been widely used in different structural systems in residential and non-residential construction, especially roof structures due to many advantages. Firstly, no heat is used to form the sections unlike hot-rolled steel. Secondly, several steel thicknesses are offered to accommodate a wide range of structural and non-structural purposes. Researchers have recently searched in the usage of CFS sections, and their research showed an improvement in stiffness and strength of these sections. Therefore, the purpose of this search is to analyze and conduct the behaviour of lipped single and double channel back-to-back CFS sections with edge-stiffened hole. The …

Finite Element Modeling And Behavior Analysis Of Axially Comprised Circular Dual Tube Columns Filled With Concrete, Ahmed Ayman Mostafa, Ahmed Mahmoud El Hadidy, Nashwa Mohamed Yossef

Journal of Engineering Research

CFDST is an abbreviation that stands for concrete-filled columns that have a dual steel tube. In the past few years, there has been debate on the possibility of using these types of columns. As a consequence of this, the objective of this work is to develop and validate material modeling approaches that are considered to be suitable for use with concrete-filled columns (CFT) that have been exposed to axial compression loads. Using the ABAQUS program as the nonlinear finite element, the suggested models are evaluated by doing a comparison study with the experimental data. This analysis is carried out in …

Utilization Of Ammonia Hydroxide /Diesel Fuel Blends In Partially Premixed Charge Compression Ignition (Ppcci) Engine: A Technical Review, Medhat Elkelawy, Hagar Alm Eldin Mohamad, Mohamed Samadony, Abdallah Salem Abdalhadi

Journal of Engineering Research

Almost 50% of new car registrations in Europe at the turn of the century were diesel. However, reports of harmful NOx emissions have been corroborated by diesel emissions scandals, which have sent the diesel engine market into a tailspin and raised concerns about the diesel engine's long-term viability. Developing of diesel cars with low NOx emissions has been announced by major automakers. Modern posttreatment systems can be installed, and they will result in decreased NOx emissions for heavy-duty, marine, or power production applications. Despite attempts to lower NOx emissions, the automobile, marine, and power generation industries must decarbonize if we …

Architectural Design Of School Buildings In The View Of Concepts And Applications Of Artificial Intelligence, Nervana Osama Hanafy

Journal of Engineering Research

An enormous amount of data is usually needed for the design in the early phases of projects. Right now, computational tools are accessible to help the designer use data and information quickly and effectively to do this. Artificial intelligence, or AI,is a recent field of study that uses, analyzes, and manipulates data to complete tasks and reach goals. Modeling, anomaly detection, association, and grouping are just a few of the many sub-fields that make up the current state of AI, The goal of the current study is to make clear the benefits of using AI into architectural design and to …

Experimental And Theoretical Study On Reverse Osmosis Based Water Desalination, Amr M. Elbrol, Elsayed Elsaid, Yaser Elsamadony, Farid A. Hammad, Khaled Khodary Ismaeil

Journal of Engineering Research

Freshwater availability has dropped due to population growth, inefficient use, climate change, and industrial pollution. Although the reverse osmosis, RO, system is one of the most effective desalination technologies worldwide, spiral wound membranes still need deeper theoretical and experimental investigations for removing salts under low energy consumption. In this study, the performance of a commercial pilot RO plant that utilizes a spiral wound seawater membrane module is experimentally investigated under a wide range of operating parameters. In addition, a Mathematical model is developed based on the solution-diffusion model theory and then solved using an in-house MATLAB algorithm to analyze its …

The Thermal And Energy Performance Comparison Of Extruded Polystyrene Foam Insulation For An Apartment Building In Different Climate Zones,Egypt, Seham Ali Elmozy, Youssef Elkhayat, Engi Eldarwish

Journal of Engineering Research

The energy sector continually grapples with formidable challenges, particularly in nations characterized by burgeoning populations, where the construction industry faces mounting pressure to curtail energy consumption. Among the influential factors impacting a building's energy usage and environmental building performance, thermal insulation materials stand out prominently. Consequently, this research selected a residential building, situated in diverse climatic conditions, to assess the implications of applying thermal insulation materials to the building's envelope on indoor thermal comfort and energy consumption, both in the current period and in the context of climate changes. Utilizing Design Builder software, an apartment was simulated for three major …

Impact Of Utilizing A Diesel/Ammonia Hydroxide Dual Fuel On Diesel Engines Performance And Emissions Characteristics, Medhat Elkelawy, Hagar Alm Eldin Mohamad, Mohamed Samadony, Abdallah Salem Abdalhadi

Journal of Engineering Research

The problem of global warming and environmentally polluting emissions has become the call of the times. To solve this problem, the trend to change or share new types of fuel has become a new way to solve this problem. One of the most promising types of fuel in the future is ammonia, as it is a carbon-free fuel, unlike traditional fossil fuels. Because of the danger of using ammonia as a gas, it was safer to use ammonia as a liquid. In this study, ammonia hydroxide was used as a proportion with diesel fuel in a PCCI diesel engine. The …

Integrating Environmental Control And Architectural Design: A Coordinated Teaching Framework That Uses Multiple Strategies To Enhance Student Skills, Mahmoud Desouki, Hesham Awad

Journal of Engineering Research

This paper aimed at formulating a teaching framework for environmental control to develop students' skills. It emphasizes the importance of multiple strategies into architectural education and proposes a coordinated approach between three courses’: environmental control, Islamic architecture history, and architectural design. It reviews pedagogical approaches in architectural education to design a framework to environmental control. That framework achieves the course outcomes for the higher education ministry syllabus and goes in line with both Egyptian and American quality standards. The framework involves several activities, including lectures that introduce the theoretical background, construction of physical models, teamwork presentations, use of simulation software, …

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 …

"دور الهندسة القيمية في التحسين الوظيفي لأحد الآبنية التعليمية بمصر" " The Role Of Value Engineering In The Functional Improvement Of An Educational Building In Egypt ", Marwa Kamar

Journal of Engineering Research

يتم تطبيق منهجية الهندسة القيمية (Value Engineering) بغرض تحديد نطاق المشروع بصورة أكثر دقة بهدف معرفة دور الهندسة القيمية في التحسين الوظيفي في أحد الآبنية التعليمية بمصر بغرض رفع الكفاءة الوظيفية للمشروع وخفض التكاليف والمرونة في التنفيذ، توفير الوقت، التحسين البيئي وحل المشكلات التي تتتعلق بمشاريع التشيد والبناء بصفة عامة، تؤثر نتائج تطبيق الهندسة القيمية في التحسين الوظيفي للآبنية التعليمية بمصر في الدراسة الحالية بشكل إيجابي وتساعد فى تطويرالتصميم الحالي بغرض الوصول الي افصل البدائل التصميمة من حيث تحسين وتنظيم العلاقات الوظيفية مع التحسين البيئي بين عناصر المشروع، التوفير في مساحات فراغات المشروع وفق الاحتياجات المطلوبة حيث يتم تقليل مساحات …

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 …

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 …

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 …