Engineering Commons^™

Design Of An Urban Garden Aquaponics System, Riley Albright-Borden, James Wang, Sydney Thompson

Interdisciplinary Design Senior Theses

The project objective is to create a durable, off-the-grid, large-scale aquaponics system consisting of over 90 sq. ft of growing space, a 650-gallon fishpond, and four types of sensors to transmit water quality data to the internet for remote water quality monitoring. The end goal of the project is to supplement produce grown in the garden to further increase fresh, nutritional options available in meals cooked and distributed by Loaves and Fishes Family Kitchen to combat food insecurity in San Jose. This report presents the need for a system, details the various subsystems, and the rationale for the designs. It …

Fossil Mobiles: Exploring The Process Of Art As Science Inquiry For Elementary Students Through A Grounded Theory Study, Jolene K. Teske, Courtney Clausen, Harun Parpucu, Phyllis Gray, Audrey C. Rule

Journal of STEM Arts, Crafts, and Constructions

Arts integration into Science, Technology, Engineering, and Mathematics (STEM) subject areas is currently an important area of investigation. This study developed a grounded theory of how artmaking of a mobile related to fossil life of the Devonian period engendered geoscience inquiry. Data were collected from elementary students entering fourth to sixth grade (7 male, 9 female) attending a week-long summer camp at a Midwestern university. Students engaged in a daily hour-long class creating fossil mobiles and learning geoscience content through illustrated slide shows, form and function sets of materials related to Devonian fossils, fossil books, and a fossil hunter- fossil …

Exploring Preservice Teachers’ Still-Life Paintings Of Crystals With Artist-Focused Compared To Science-Focused Introductions, Mahjabeen Hussain, Dessy Stoycheva, Audrey C. Rule, Denise A. Tallakson

Journal of STEM Arts, Crafts, and Constructions

This experimental study was undertaken with preservice teachers to test whether the use of science integration into arts education increases demonstration of science details and creative features in artwork. Two conditions were created: arts-focused and science-focused; gouache still-life paintings were produced and analyzed, and an attitude survey was completed. The results suggested that science integration into visual arts classes increased creativity for the arts-focused condition and increased science concepts in the science-focused condition. Participants in both conditions reported positive attitudes, specifically, high levels of enjoyment, alluded to lack of experience with arts and creative projects, and expressed desire for more …

A Content Analysis Of Thirty Children’S Picture Books About Ecology, Natalia Martín Martín, Jennifer L. Hageman, Sarah E. Montgomery, Audrey C. Rule

Journal of STEM Arts, Crafts, and Constructions

This study presents a content analysis of 30 ecology-themed children’s picture books published in English and Spanish from 1994 to the present. Books were analyzed for the following aspects: 1) Nature appreciation, 2) Interrelatedness of Nature, 3) Realistic ecology problem, 4) Differing perspectives, 5) Hope for a solution, 6) Reflection and responsibility, 7) Steps for a solution, 8) Positive tone, 9) Representation of diversity, 10) Appropriate illustrations, 11) Story appeal, and 12) Developmental appropriateness. Scoring guidelines are provided in an appendix. Content analysis results revealed that most books raise awareness about the impact of human action on the environment, although …

Ocean Underwater Scene Dioramas Of First Graders With Submarine Porthole Views, Ksenia Zhbanova, Audrey C. Rule, Denise A. Tallakson

Journal of STEM Arts, Crafts, and Constructions

Ecology education of the younger generations is vital for worldwide change of people’s attitudes toward nature warranted by the current global ecological crisis. Yet, this goal needs to be addressed through age-appropriate activities that are educational and engaging. This practical article focuses on dioramas of ocean reef life made by first graders. This arts-integrated project served two main purposes: 1) education of primary students about ocean ecology and helping students realize their roles in saving nature 2) increasing student science content knowledge. Additionally, several other benefits of making dioramas emerged during this project, including highly creative student products, genuine interest …

Slime Bash Social: A Tactile Manipulative For Child And Youth Play, Joyce A. Levingston, Marie E. Adebiyi, Brian Hadley, Younis Al-Hassan, Dongyub Back, Michelle Cook, Christopher R. Edginton

Journal of STEM Arts, Crafts, and Constructions

The play product of slime has gained increasing popularity amongst children and youth throughout the United States. Slime can be thought of as a tactile manipulative that can be shaped, stretched, expanded, lumped together, twisted, squeezed, squashed, folded, rolled, shredded, twirled, swirled, pounded, and cut or pulled apart. As a learning tool, slime can and does support STEM initiatives and programs. Slime can be created using simple ingredients that are easily measured, combined, and prepared by children and youth. In addition, slime can incorporate components such as glitter, beads, shaving cream, color dyes and other items. This paper offers an …

Practical Art Projects Related To Children’S Picture Books About Ecology, Jennifer L. Hageman, Natalia Martín Martín, Sarah E. Montgomery, Audrey C. Rule

Journal of STEM Arts, Crafts, and Constructions

This study presents art projects that reinforce scientific content presented in children’s picture books about ecology. Ten K-6 students from varying socioeconomic classes, and different cultural and language backgrounds from the United States and Spain participated. Next Generation Science Standards were identified and addressed in these art projects. Students’ understanding and engagement were evaluated through teacher observations, photographs, and a student attitude survey. Upper- and lower-elementary students evidenced increased understanding of environmental issues, and high level of enjoyment and engagement through these art projects integrated with science content. Researchers encourage educators to incorporate picture books and art in science lessons …

Editorial: Developing Creativity Through Stem Subjects Integrated With The Arts, Ksenia Zhbanova

Journal of STEM Arts, Crafts, and Constructions

This issue of the Journal of STEM Arts, Crafts, and Constructions is focused on creativity - one of the most highly-desirable 21^st Century skills on personal and global levels. Time, pedagogical knowledge, and resource constraints limit the number of opportunities for teachers to develop creativity in students. In this editorial, creativity development steps and strategies are illuminated along with specific roles of STEM subjects and the arts in development of student creativity. The processes of creativity development used in STEM and the arts are compared to each other and to the non-subject-specific creative process model of Root-Bernstein and Root- …

Synergy: An Energy Monitoring And Visualization System, Sarah Johnson, Pearce Ropion

Computer Science and Engineering Senior Theses

The key to becoming a more sustainable society is first learning to take responsibility for the role we play in energy consumption. Real-time energy usage gives energy consumers a sense of responsibility over what they can do to accomplish a much larger goal for the planet, and practically speaking, what they can do to lower the cost to their wallets. Synergy is an energy monitoring and visualization system that enables users to gather information about the energy consumption in a building – small or large – and display that data for the user in real-time. The gathered energy usage data …

Switched Capacitor Voltage Converter, Anne Hsia, Bradford Kidd

Electrical and Computer Engineering Senior Theses

This project supports IoT development by reducing the power con- sumption and physical footprint of voltage converters. Our switched- capacitor IC design steps down an input of 1:0 - 1:4 V to 0:6 V for a decade of load current from 5 - 50𝝁A.

Lactic Acid Threshold Stimulator, Justin Brackett, Karen Carreon, Fernando Guerra, Malyna Sanchez

Interdisciplinary Design Senior Theses

As a person works out, the threshold of lactic acid will build causing anywhere from discomfort to pain. Reducing the discomfort caused by lactic acid could greatly improve an individual’s performance while working out. Reducing this discomfort may be done through Electrical Muscle Stimulation (EMS), which is the procedure of contracting muscles through sending electrical signals. Our team’s goal is to create LATS, a wearable and mobile application that alleviates discomfort and aids muscle recovery during the intense parts of a workout. The system consists of a heart rate monitor to measure lactic acid levels, a garment that is worn …

Analysis And Trends In The Development Of Models For Studying Thermal Physical Properties Of Solid And Disperse Substances, А.А. Abdurakhmanov, А.А. Rashidov, М.М. Мakhmudjanov

Technical science and innovation

The paper studies the thermal physical properties of solid disperse, powder and granular materials, and also reveals that the thermal physical properties of various materials are of different nature, mainly the thermal physical properties of metallic and nonmetallic materials are sharply determined by the nature of their detection, which indicates the reliability of the mathematical model that describes the basic thermal physical parameters that are structural geometric parameters of solid disperse, powder and granular materials and as a result they are classified on their thermal physical properties. Also the choice of the method for calculating the basic properties of solid …

Experimental Research And Computer Simulation Of Multi-Cascade Composite Transistors For Stabilizing The Operating Mode Of Output Cascades Of Radio Engineering Devices, A.A. Yarmukhamedov, A.B. Zhabborov, B.M. Turimbetov

Technical science and innovation

Experimental results and computer simulation of multi-stage composite transistors are presented. To study the volt - ampere characteristics of multistage composite transistors, a dialogue computer simulation program, the Delphi programming environment, has been developed. It is shown that the proposed multistage composite transistors can improve manufacturability in its industrial production. It is shown that multistage homostructure transistors according to the Darlington and Shiklai circuits operate stably at collector-emitter voltages five times higher than in the case of individual transistors. The power dissipated on the collector is 3 times higher than the rated value of the maximum permissible power of the …

Obtaining Some Thermodynamic Parameters Containing Metacrylate And Allyl Groups Containing In Composition, M.I. Abdukakhkharova, A.I. Ismailov, U.M. Mirzaev, R.I. Ismailov

Technical science and innovation

The article discusses the preparation of some thermodynamic parameters characterizing the final product of complex radical polymerization of amino alkyl acrylate derivatives containing both methacrylate and alkyl groups of low molecular weight compounds with electron acceptors - polymerization initiators at temperatures that exclude thermal decomposition of the initiators themselves. The equilibrium constant of the complication reaction and the molar extinction coefficient of the complex were determined by graphically solving the Bеneshe-Hildebrand equation, the heats of complex formation, entropy, Gibbs energy were found, and the elemental composition of low molecular weight and high molecular weight substances was determined. As can be …

Top Level Mesh, Matt Jasaitis, Tristen Islam

Computer Science and Engineering Senior Theses

This paper will cover our report on the Top Level Mesh. We have built a web-based system for mesh network management. This system allows network utilities to be used from a web-based interface to monitor and manage the transfer of data. The system runs primarily on Raspberry Pis using Raspbian Linux. Users can access the system through web browsers to both configure the system and interact with the data on the network. We discuss our motivation for the project, design decisions made, technologies used and more throughout this report. We conclude with some lessons learned and future work to be …

Analysis Of Monitoring Of The At-3 Autotransformator In Tashtes Mode, F.S. Isakov

Technical science and innovation

The article considers the results of the analysis of autotransformers operation mode monitoring. The time diagram of active load current and oil temperature of autotransformer TashTES AT-3 is established and during one year changes of these variables and basic parameters of autotransformer were observed. Technical faults of the power transformer and high power autotransformer are established and methods of their elimination are determined. Damage of transformers and autotransformers with voltage of 110-500 kV of about 30% of the total number of outages which were accompanied by internal short-circuits and two main causes of damage were determined. The main causes of …

Influence Of The Nature Of The Grind On Toughness Of The Paper, N.K. Atakhanova, Z.K. Galimova, K.A. Babahanova

Technical science and innovation

Influence of the nature of the grind is considered In article on mechanical characteristic of the paper on base cotton with different percent accompaniment of the wheat cellulose. The Known that process of the milling of the paper mass is conducted solely big importance in creation the most varied characteristic paper sheet. Depending on the duration of the grinding, the nature of the degree of grinding and the properties of the paper change. For example, with a low (cage) degree of grinding the pulp, it is predominantly chopped fibers above the surface fibrillation, resulting in a loose and porous sheet …

Development Of A High-Speed Algoritm Of Neuro-Logical Conclusion, I.H. Siddikov, D.B. Yadgarova

Technical science and innovation

One of the ways to increase the efficiency of the process of managing continuous dynamic objects is to develop new or improve existing control systems based on modern methods involving the achievements of information technology. The article deals with the creation of highly efficient control algorithms for technological objects, operating in conditions of uncertainty, designed to manage real-life objects. An algorithm is proposed for the structural-parametric adaptation of the PID parameters (proportional-integral-differential) -regulator, which allows to reduce the number of iterations in the learning process of the fuzzy-logical inference algorithm by reducing empty solutions. To determine the empty solutions, hybrid …

Method For Primary Processing Of Here Silkworm Cocoons By Using Infrared Radiation And Elastic Waves, J.E. Safarov, Sh.A. Sultanova, D.I. Samandarov

Technical science and innovation

The article discusses the results of an experimental study of the primary processing of silkworm cocoons. In the laboratory of the department of Tashkent State Technical University a full-scale test was carried out for the primary processing of silkworm cocoons. Experimental work was carried out to pacify and dry the living cocoons of the silkworm of the duragay cultivar “MusaffoTola” grown during the summer season. Studies were carried out to determine parameters such as temperature and time of the primary processing of the silkworm in 5-fold repetition.The initial moisture content of live silkworm cocoons was 36–40%. According to the results …

Solution Of The Problem Of Fuel Combination In Maintenance, B. Tulaev, H.A. Viarshyna, J.B. Mirzaabdullaev, J.O. Khakimov

Technical science and innovation

In article, the solution of problem of the combined use of fuel in operation is considered. It is shown that during the operation of the gasoline automobile engine the requirement to octane number of fuel changes depending on engine operation mode: at increase in rotary speed the required octane number of fuel decreases, and at increase in loading increase in octane number of fuel is necessary. The combined use of low-bracket gasoline with high-octane liquefied gas is given. The condition supporting necessary octane number of fuel on various modes for ensuring without detonation work and optimization of combustion procedure is …

Approximation Model Of A Typical Mechanical Object With Distributed Parameters, A.F. Verlan, M.V. Sagatov, D.K. Karimova, U.S. Fayzullaev

Technical science and innovation

The article discusses the method of approximation transformations for the study of a typical mechanical object with distributed parameters. A mathematical description of an object with distributed parameters, which is given in the form of a partial differential equation, and their structural models are considered. An approximation model has been obtained with a number of unique properties that have proven useful in the construction of structural models of electromechanical systems.

Decompositional Method For Modelling And Studying Pulse-Width Automatic Control Systems Based On Dynamic Graphs, A.A. Kadirov, D.R. Kadirova, A.M. Nazarov

Technical science and innovation

Systems with pulse-width modulation are essentially non-linear automatic control systems. The complexity factors of pulse-width systems include multivariable, the multirate nature of the pulse-width modulators work, and the nonstationarity of control objects. Such systems have been known for a long time and are now widely used. Various exact and approximate methods have been proposed for the analysis and synthesis of PWM systems. The field of the practical application of known methods is limited to single-variable systems because classical approaches provide for the consideration of the initial structures as a whole. Hence, the root cause of the fundamental difficulties arising in …

Studying Of The Material Composition And Development Of The Technology Of Processing Of Gold-Containing Sulfide Samples Of One Of The Deposits Of The Republic Uzbekistan, Kh Akhmedov, Zh.M. Bekpulatov, G. K. Solijonova, N.Z. Sharifova

Technical science and innovation

The article discusses the results of studying the material composition and the development of technology for processing gold-bearing sulfide ore samples. The material composition of the ore samples was studied by spectral, chemical, assay and rational analysis of gold and silver. Based on a study of the material composition of the ore samples, the following conclusions were made: gold and silver are the industry's most valuable components. It is shown that the use of sulfuric acid treatment of a cinder of graviofloraf concentrate can allow to improve the technological performance of the process. As a result of the mixture of …

Effect Of Intermediate Connections On The Generator`S Static Stability, S.E. Shernazarov

Technical science and innovation

This article provides the influence of the active, inductive capacitive load on the static stability of synchronous generators and compiled the angular characteristics of the generator power at various loads. When a resistive load is connected, an intermediate power extraction of Pr (δ) occurs. It can be defined as the difference Rg (δ) – Ph (δ) = Pr (δ), depending on the angle δ. The presence of this selection leads to an increase in the ultimate in static stability generator power. However, this reduces the possibility of transmitting power to the receiving system. Therefore, we can talk about the ambiguous …

Incorporating Antecedent Soil Moisture Into Streamflow Forecasting, Abdoul Oubeidillah, Glenn Tootle, Thomas Piechota

Civil Engineering Faculty Publications

This study incorporates antecedent (preceding) soil moisture into forecasting streamflow volumes within the North Platte River Basin, Colorado/Wyoming (USA). The incorporation of antecedent soil moisture accounts for infiltration and can improve streamflow predictions. Current Natural Resource Conservation Service (NRCS) forecasting methods are replicated, and a comparison is drawn between current NRCS forecasts and proposed forecasting methods using antecedent soil moisture. Current predictors used by the NRCS in regression-based streamflow forecasting include precipitation, streamflow persistence (previous season streamflow volume) and snow water equivalent (SWE) from SNOTEL (snow telemetry) sites. Proposed methods utilize antecedent soil moisture as a predictor variable in addition …

Correction: Responses Of Deposition And Bioaccumulation In The Great Lakes Region To Policy And Other Large-Scale Drivers Of Mercury Emissions, Judith Perlinger, N. R. Urban, A. Giang, N. E. Selin, A. Hendricks, H. Zhang, Aditya Kumar, S. Wu, Valoree Gagnon, Hugh Gorman, E. S. Norman

Michigan Tech Publications, Part 1

Correction for ‘Responses of deposition and bioaccumulation in the Great Lakes region to policy and other large-scale drivers of mercury emissions’ by J. A. Perlinger et al., Environ. Sci.: Processes Impacts, 2018, 20, 195–209.

In the original article, there were errors in some numerical values in Table 3 and in the text in Sections 3.1 and 4.1. The corrected Table and Sections are shown below. The changes are to the magnitudes of mercury species deposition to the Great Lakes region, the Upper Peninsula of Michigan, and the Adirondack region of the Lakes basin. The changes to the Adirondack …

Silica-Coated Metallic Nanoparticle-Based Hierarchical Super-Hydrophobic Surfaces Fabricated By Spin-Coating And Inverse Nanotransfer Printing, Shengjie Zhai, Hui Zhao

Mechanical Engineering Faculty Research

By combining spin coating and inverse nanotransfer printing, silica-coated gold nanoparticles are patterned onto polydimethylsiloxane (PDMS) superhydrophobic surfaces to form a hierarchical structure. A layer of nanoparticles is spin-coated on a flat silicon substrate serving as the stamp, which is then transferred to the raised regions of PDMS surfaces. Our inverse nanotransfer printing is in contrast to the standard nanotransfer printing, which transfers metal from the raised regions of a stamp to a flat PDMS surface. The fabricated hierarchical surface exhibits a higher contact angle and delays the Cassie-Wenzel transition during evaporation of a sessile droplet, indicating an improvement of …

Permeability Of Oxygen And Carbon Dioxide Through Pinholes In Barrier Coatings, Petri Johansson, Johanna Lahti, Jorma Vihinen, Jurkka Kuusipalo

Journal of Applied Packaging Research

Abstract

Packaging materials are typically made of multilayer structures combining polymers, metals and inorganic materials. Multilayer structures are selected in order to optimize the thickness and performance in packaging applications. Atomic layer deposited (ALD) aluminium oxide (Al₂O₃) layer provides good barrier properties against oxygen and carbon dioxide gases i.e. permeation of gases through ALD coated polymer films will reduce remarkably. The target was to study the effect of pinholes on the oxygen and carbon dioxide permeability of ALD coated extrusion-coated packaging paper. Pinholes were artificially generated by ultra violet (UV) laser drilling through the polymer layer …

Galápaguide, Neel Sampemane, Stephen Pacwa, Mason Bruce, Paul Ahrens

Computer Science and Engineering Senior Theses

In collaboration with the the Ministry of Tourism of Ecuador, the Association of Guides on the Galápagos, and Santa Clara University’s Frugal Innovation Hub, we developed a mobile application and administrative website connected through a REST API to a backend database as tools to assist naturalist guides on the Galápagos archipelago in conservation efforts. The goal of this system is to enable the naturalist guides and administrators to report issues with greater efficiency and view the data in a more useful way. This report outlines our design for this project and the reasoning behind our design decisions.

Virtual Reality Physics Scenarios, Patric Zhang, Thomas King

Computer Science and Engineering Senior Theses

Many students taking physics early on in their education find that it may be difficult to associate the theory they learn in class with how physics works in real world scenarios. Through various experiments in class, students are able to see examples of physics phenomena, but those experiments are limited by equipment, and do not offer precise data. To combat this, we are creating a virtual reality application for students to use to help learn physics. This report details the requirements the system will meet, as well as the use cases and subsequent activity diagrams for all users. We have …