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Full-Text Articles in Applied Mechanics

A Farm-Level Precision Land Management Framework Based On Integer Programming, Qi Li, Guiping Hu, Talukder Jubery, Baskar Ganapathysubramanian Mar 2017

A Farm-Level Precision Land Management Framework Based On Integer Programming, Qi Li, Guiping Hu, Talukder Jubery, Baskar Ganapathysubramanian

Mechanical Engineering Publications

Farmland management involves several planning and decision making tasks including seed selection and irrigation management. A farm-level precision farmland management model based on mixed integer linear programming is proposed in this study. Optimal decisions are designed for pre-season planning of crops and irrigation water allocation. The model captures the effect of size and shape of decision scale as well as special irrigation patterns. The authors illustrate the model with a case study on a farm in the state of California in the U.S. and show the model can capture the impact of precision farm management on profitability. The results ...


Computer Vision And Machine Learning For Robust Phenotyping In Genome-Wide Studies, Jiaoping Zhang, Hsiang Sing Naik, Teshale Assefa, Soumik Sarkar, R. V. Chowda Reddy, Arti Singh, Baskar Ganapathysubramanian, Asheesh K. Singh Jan 2017

Computer Vision And Machine Learning For Robust Phenotyping In Genome-Wide Studies, Jiaoping Zhang, Hsiang Sing Naik, Teshale Assefa, Soumik Sarkar, R. V. Chowda Reddy, Arti Singh, Baskar Ganapathysubramanian, Asheesh K. Singh

Mechanical Engineering Publications

Traditional evaluation of crop biotic and abiotic stresses are time-consuming and labor-intensive limiting the ability to dissect the genetic basis of quantitative traits. A machine learning (ML)-enabled image-phenotyping pipeline for the genetic studies of abiotic stress iron deficiency chlorosis (IDC) of soybean is reported. IDC classification and severity for an association panel of 461 diverse plant-introduction accessions was evaluated using an end-to-end phenotyping workflow. The workflow consisted of a multi-stage procedure including: (1) optimized protocols for consistent image capture across plant canopies, (2) canopy identification and registration from cluttered backgrounds, (3) extraction of domain expert informed features from the ...


Chocolate Bar Wrapping Machine, Austin M. Hoff, Daniel R. Trepke, Caleb B. Krichbuam Jan 2017

Chocolate Bar Wrapping Machine, Austin M. Hoff, Daniel R. Trepke, Caleb B. Krichbuam

Williams Honors College, Honors Research Projects

Gilbert Chocolates has proposed to manufacture a machine to wrap chocolate bars. This machine is intended to replace two people wrapping the chocolate bars by hand, which is a time consuming method. This is especially apparent between October and January when the workers are working long hours in preparation for the Christmas rush of customers. Currently wrapping a bar takes about a minute and Gilbert Chocolates wants this time reduced down to 20-30 seconds. The budget for this project is set at $1000, and is being funded by the company. This machine needs to fit in a cubic foot of ...


A Real-Time Phenotyping Framework Using Machine Learning For Plant Stress Severity Rating In Soybean, Hsiang Sing Naik, Jiaoping Zhang, Alec Lofquist, Teshale Assefa, Soumik Sarkar, David M. Ackerman, Arti Singh, Asheesh K. Singh, Baskar Ganapathysubramanian Jan 2017

A Real-Time Phenotyping Framework Using Machine Learning For Plant Stress Severity Rating In Soybean, Hsiang Sing Naik, Jiaoping Zhang, Alec Lofquist, Teshale Assefa, Soumik Sarkar, David M. Ackerman, Arti Singh, Asheesh K. Singh, Baskar Ganapathysubramanian

Mechanical Engineering Publications

Background: Phenotyping is a critical component of plant research. Accurate and precise trait collection, when integrated with genetic tools, can greatly accelerate the rate of genetic gain in crop improvement. However, efficient and automatic phenotyping of traits across large populations is a challenge; which is further exacerbated by the necessity of sampling multiple environments and growing replicated trials. A promising approach is to leverage current advances in imaging technology, data analytics and machine learning to enable automated and fast phenotyping and subsequent decision support. In this context, the workflow for phenotyping (image capture → data storage and curation → trait extraction → machine ...


Physical Testing Of Potential Football Helmet Design Enhancements, Michael Jeremy Schuster Jun 2016

Physical Testing Of Potential Football Helmet Design Enhancements, Michael Jeremy Schuster

Master's Theses and Project Reports

Football is a much loved sport in the United States. Unfortunately, it is also hard on the players and puts them at very high risk of concussion. To combat this an inventor in Santa Barbara brought a new design to Cal Poly to be tested.

The design was tested in small scale first in order to make some preliminary conclusions about the design. In order to fully test the helmet design; however, full scale testing was required. In order to carry out this testing a drop tower was built based on National Operating Committee on Standards for Athletic Equipment, NOCSAE ...


Machine Learning For High-Throughput Stress Phenotyping In Plants, Arti Singh, Baskar Ganapathysubramanian, Asheesh Kumar Singh, Soumik Sarkar Feb 2016

Machine Learning For High-Throughput Stress Phenotyping In Plants, Arti Singh, Baskar Ganapathysubramanian, Asheesh Kumar Singh, Soumik Sarkar

Mechanical Engineering Publications

Advances in automated and high-throughput imaging technologies have resulted in a deluge of high-resolution images and sensor data of plants. However, extracting patterns and features from this large corpus of data requires the use of machine learning (ML) tools to enable data assimilation and feature identification for stress phenotyping. Four stages of the decision cycle in plant stress phenotyping and plant breeding activities where different ML approaches can be deployed are (i) identification, (ii) classification, (iii) quantification, and (iv) prediction (ICQP). We provide here a comprehensive overview and user-friendly taxonomy of ML tools to enable the plant community to correctly ...


On The Role Of Cell Distribution In Hydrolytically Degradable Hydrogels For Tissue Engineering, Gaspard De Roucy Jan 2016

On The Role Of Cell Distribution In Hydrolytically Degradable Hydrogels For Tissue Engineering, Gaspard De Roucy

Civil Engineering Graduate Theses & Dissertations

Degradable hydrogels have recently become prominent materials in the field of tissue engineering. They can be submitted to two degradation process: hydrolytic and enzymatic. For hydrolytically degradable systems, results seem to differ between samples. Yet the reasons for such a phenomenon have not been clearly understood. The objective of this thesis is to establish a multiscale model for such hydrogels. With the hypothesis that cross-linking density varies within a cell-seeded hydrogel, the present thesis aims to interpret experimental results to model and predict their behavior. First, a three-dimensional cell distribution is generated based on the analysis of experimental microscopy images ...


Three-Dimensional Confocal Microscopy Indentation Method For Hydrogel Elasticity Measurement, Donghee Lee, Md Mahmudur Rahman, You Zhou, Sangjin Ryu Aug 2015

Three-Dimensional Confocal Microscopy Indentation Method For Hydrogel Elasticity Measurement, Donghee Lee, Md Mahmudur Rahman, You Zhou, Sangjin Ryu

Md Mahmudur Rahman

No abstract provided.


Adaptive Basketball Shooter - Final Project Report, Jenna N. Becker, Richard A. Galanti, Justin D. Haley, Brett Y. Nayudu Jun 2014

Adaptive Basketball Shooter - Final Project Report, Jenna N. Becker, Richard A. Galanti, Justin D. Haley, Brett Y. Nayudu

Mechanical Engineering

The Friday Club is a joint venture between the Cal Poly Kinesiology Department and the San Luis Obispo Special Olympics that offers people with varying degrees of disability the opportunity to meet weekly and learn various sports and games. At Friday Club, athletes in wheelchairs with limited arm strength use devices built by Cal Poly mechanical engineering students in order to participate in various sports. Many devices are designed to attach to the Universal Play Frame (UPF), a wheel-chair attachment. The purpose of this project was to design and build a UPF device that will launch a basketball, so that ...


Electrical Detection Of Cellular Penetration During Microinjection With Carbon Nanopipettes, Sean E. Anderson, Haim H. Bau Apr 2014

Electrical Detection Of Cellular Penetration During Microinjection With Carbon Nanopipettes, Sean E. Anderson, Haim H. Bau

Departmental Papers (MEAM)

The carbon nanopipette (CNP) is comprised of a pulled-glass pipette terminating with a nanoscale (tens to hundreds of nm) diameter carbon pipe. The entire inner glass surface of the CNP is coated with a carbon film, providing an electrically conductive path from the carbon tip to the distal, macroscopic end of the pipette. The CNP can double as a nanoelectrode, enabling electrical measurements through its carbon lining, and as a nanoinjector, facilitating reagent injection through its hollow bore. With the aid of a lock-in amplifier, we measured, in real time and with millisecond resolution, variations in impedance as the CNP ...


Throwing Frame For Athletes With Dissabilities, Andrew Higgins, Stefan Owechko, Gabriel (Gabe) Terrasas, Kevin Crisfield Jun 2012

Throwing Frame For Athletes With Dissabilities, Andrew Higgins, Stefan Owechko, Gabriel (Gabe) Terrasas, Kevin Crisfield

Mechanical Engineering

Team Zeus’ senior project was to design, build and test a working throwing frame system for Bridge II Sports, a nonprofit organization in North Carolina. The throwing frame is used to allow athletes and individuals with disabilities to throw shot-put, discus, and javelin using a frame to sit against. Team Zeus was specifically tasked to build a frame that is lighter weight and more transportable than products that are currently on the market. This frame also is adjustable to accommodate a wide range of athlete weights, sizes, and abilities. The final result is a 35lb aluminum frame with two different ...


An Investigation Of Fraxinus Americana Branch Sway Using A 3 Dimensional Motion Capture System, Anna T. Campiformio May 2012

An Investigation Of Fraxinus Americana Branch Sway Using A 3 Dimensional Motion Capture System, Anna T. Campiformio

Master's Theses

Abstract

Wind is a dominant abiotic factor that a tree experiences throughout its lifetime and can cause severe tree damage, resulting in risk of injury to humans, and economic and ecological losses. It is thought that trees develop structural properties and architectures that help withstand loading conditions by dissipating wind energy through damping mechanisms. The role of branch motion in reducing potential dangerous wind loads has been the focus of relatively few studies. Even fewer studies have examined tree sway response to natural wind loaded conditions. In this investigation, branch frequencies were calculated for three Fraxinus americana using a three-dimensional ...


Semi-Active Damping For An Intelligent Adaptive Ankle Prosthesis, Andrew K. Lapre Jan 2012

Semi-Active Damping For An Intelligent Adaptive Ankle Prosthesis, Andrew K. Lapre

Masters Theses 1911 - February 2014

Modern lower limb prostheses are devices that replace missing limbs, making it possible for lower limb amputees to walk again. Most commercially available prosthetic limbs lack intelligence and passive adaptive capabilities, and none available can adapt on a step by step basis. Often, amputees experience a loss of terrain adaptability as well as stability, leaving the amputee with a severely altered gait. This work is focused on the development of a semi-active damping system for use in intelligent terrain adaptive ankle prostheses. The system designed consists of an optimized hydraulic cylinder with an electronic servo valve which throttles the hydraulic ...


Dynamic Vertical Climbing: Bioinspiration, Design, And Analysis, Goran Lynch Dec 2011

Dynamic Vertical Climbing: Bioinspiration, Design, And Analysis, Goran Lynch

Publicly Accessible Penn Dissertations

Biologists have proposed a pendulous climbing model, the Full-Goldman (F-G) template, that abstracts remarkable similarities in dynamic wall scaling behavior exhibited by radically different animal species. This thesis presents a progression of work related to dynamic vertical climbing based on that model.

We begin by describing the inspiration, design, implementation of and experimentation with the first dynamical vertical climbing robot. We study numerically a version of the pendulous climbing template dynamically re-scaled for applicability to utilitarian payloads with conventional electronics and actuation, revealing that the incorporation of passive compliance can compensate for an artifact’s poorer power density and scale ...


Universal Play Frame Vi, Justin Bazant, Cullen Crackel, Anthony Franceschi Dec 2010

Universal Play Frame Vi, Justin Bazant, Cullen Crackel, Anthony Franceschi

Mechanical Engineering

This design report details the design process utilized by Adaptive Exercise Designs (AED) in creating the sixth design of the Universal Play Frame (UPF). The UPF is an adaptive frame which supports a variety of devices that allows athletes in wheelchairs with limited range of motion to participate in physical activity. The past five frame designs do not meet the needs of the Friday Club due to complications with function and time constraints. To ensure all of Fridays Club's needs were met, the problem was better defined by converting the customer requirements into engineering specifications. The design process our ...


Mechanical And Chemical Effects In Adhesion Of Thin Shell Structures With Applications In Wafer Bonding And Adhesion Of Living Cells, Richard M. Springman Aug 2009

Mechanical And Chemical Effects In Adhesion Of Thin Shell Structures With Applications In Wafer Bonding And Adhesion Of Living Cells, Richard M. Springman

Publicly Accessible Penn Dissertations

A theoretical model is analyzed to investigate the adhesion of thin shell structures to both rigid and deformable substrates under a variety of surface conditions. The thermodynamic forces driving the adhesive process are determined from an interfacial free energy, which is described within a classical thermodynamics framework. Deformations of the thin, elastic shells are studied using a geometrically nonlinear shell theory. Finite-range adhesive tractions, chemical segregation, substrate compliance, and substrate topography all are considered over a wide range of geometric and material parameters. Equilibrium adhesion states are characterized by a shell flatness parameter, the contact radius, and the adhesive and ...


Single-Molecule Biophysical Assays With Electrokinetics, Mark Arsenault Jul 2009

Single-Molecule Biophysical Assays With Electrokinetics, Mark Arsenault

Publicly Accessible Penn Dissertations

Molecular motors and actin filaments play critical roles in disease processes and, more generally, in cell motility. The thesis developed new techniques to study the mechanical and electrical properties of actin filaments and the motion of motor proteins unhindered by nearby surfaces. Devices consisting of a pair of electrodes separated with a small gap were patterned on a glass wafer. With the application of AC electric fields, rhodamine-phalloidin-labeled actin filaments were polarized, attracted to the gap, and became suspended across the two electrodes. The thermal fluctuations of the suspended actin filaments were imaged, and the filament’s tension was estimated ...


Medical Technology: Contexts And Content In Science And Technology, Michael A. De Miranda, Mark Doggett, Jane T. Evans Jan 2005

Medical Technology: Contexts And Content In Science And Technology, Michael A. De Miranda, Mark Doggett, Jane T. Evans

Architectural and Manufacturing Sciences Faculty Publications

No abstract provided.


A Semi-Empirical Cellular Automata Model For Wildfire Monitoring From A Geosynchronous Space Platform, Brian D. Killough Jan 2003

A Semi-Empirical Cellular Automata Model For Wildfire Monitoring From A Geosynchronous Space Platform, Brian D. Killough

Dissertations, Theses, and Masters Projects

The environmental and human impacts of wildfires have grown considerably in recent years due to an increase in their frequency and coverage. Effective wildfire management and suppression requires real-time data to locate fire fronts, model their propagation and assess the impact of biomass burning. Existing empirical wildfire models are based on fuel properties and meteorological data with inadequate spatial or temporal sampling. A geosynchronous space platform with the proposed set of high resolution infrared detectors provides a unique capability to monitor fires at improved spatial and temporal resolutions. The proposed system is feasible with state-of-the-art hardware and software for high ...


Development Of An Empirical Model Of Human Sweating And A Semi-Empirical Model Of Human Thermoregulation , Jennifer Jane Walker Jan 1999

Development Of An Empirical Model Of Human Sweating And A Semi-Empirical Model Of Human Thermoregulation , Jennifer Jane Walker

Retrospective Theses and Dissertations

The physiology of the human thermoregulatory response to changes in environment and work load has been studied from the perspective of both the physiologist and the engineer. Both fields have brought certain skills and tools to the effort. An effort to bring together the understanding gained from these two perspectives has been lacking. In this work a model for the sweat response and a model for the thermoregulatory response to changes in room temperature were developed. These models were developed using the modeling tools of engineering and the knowledge contained in past experimental data;An empirical model of the sweat ...


Wiping Out Tall Weeds, Brad Rayner Mar 1995

Wiping Out Tall Weeds, Brad Rayner

Journal of the Department of Agriculture, Western Australia, Series 4

Control of weeds is an on-going battle for farmers, with many weapons becoming increasingly expensive. A refreshing exception to this trend is the blanket wiper, a cheap but effective meens of applying herbicides to taller weeds in pasture. Brad Rayner explains how it works.


Trends In The Perceptions Of Graduates Of The Agricultural Mechanization Program At Iowa State University And Their Employers , Richard Wayne Steffen Jan 1993

Trends In The Perceptions Of Graduates Of The Agricultural Mechanization Program At Iowa State University And Their Employers , Richard Wayne Steffen

Retrospective Theses and Dissertations

The purpose of this study was to determine trends in the characteristics and perceptions of graduates of the Agricultural Mechanization program at Iowa State University to provide guidance to the faculty for the improvement of the program;The study synthesized data from three previous follow-up studies and analyzed the data using trend study methodology. It also sought to determine trends in the perceptions of the graduates' employers of the graduates' training;The overall trend found was that of consistency. Few changes in the perceptions and characteristics of graduates and their employers were found for most of the variables examined;The ...


Stubble : Friend And Foe, Department Of Agriculture And Food, Western Australia Jan 1992

Stubble : Friend And Foe, Department Of Agriculture And Food, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

Several articles in this issue of the Journal of Agriculture discuss some of the important issues of stubble management. The articles are condensed from some of the papers presented at a stubble workshop at Geraldton in 1991.


Computer Simulation Of Arterial Blood Flow , Nikolaos Stergiopulos Jan 1990

Computer Simulation Of Arterial Blood Flow , Nikolaos Stergiopulos

Retrospective Theses and Dissertations

Computer models have been widely used to simulate pressure and flow propagation in the arterial system. While experimentation involving the human arterial system is difficult and impractical, computer models offer an attractive alternative for the study of arterial hemodynamics. The purpose of the present study was to develop a computer model of the whole systemic circulation and to use this model to study pressure and flow propagation under normal flow conditions, as well as under conditions of arterial disease;The mathematical model used to describe flow in an arterial segment was based on the one-dimensional continuity and momentum equations. The ...


Improved Fertilizing Practices On The Peel-Harvey Catchment, P T. Arkell Jan 1989

Improved Fertilizing Practices On The Peel-Harvey Catchment, P T. Arkell

Journal of the Department of Agriculture, Western Australia, Series 4

Broad-acre farmers in the Peel-Harvey catchment have met a challange and achieved a great deal since the fertilizer extension programme started in 1983.

The main objective of the extension programme has been to ensure that every year three-quarters of the farmers make economically and technically sound fertilizer decisions, thus causing a minimum amount of phosphorus to enter the waterways of the Peel-Harvey estuarine system.


The Development Of An Efficient Lupin Harvesting Front, E D. Blanchard Jan 1989

The Development Of An Efficient Lupin Harvesting Front, E D. Blanchard

Journal of the Department of Agriculture, Western Australia, Series 4

Harvest losses represent a significant reduction in lupin production and farm productivity.

Since 1984, the Department's Farm Machinery Research and Liaison Unit at the Dryland Research Institute has studied the lupin harvesting operation to improve its mechanical efficiency. An experimental and a prototype harvesting front were built and tested in the field. Guidlines for efficient lupin harvesting were produced, and commercial modifications developed.


Getting The Best From Tractor Tyres, J Quealy Jan 1979

Getting The Best From Tractor Tyres, J Quealy

Journal of the Department of Agriculture, Western Australia, Series 4

The amount of pull a tractor develops depends largely on tyre efficiency and so with so many tyre size options for the one tractor model it is very easy to make the wrong decision on tyre fitment.

Tyre efficiency varies with tractor weight, soil conditions, inflation pressure and tyre size.

Hers we look at some of these factors and how changing them may affect efficiency.


Replacing Farm Machinery, R Crossman Jan 1979

Replacing Farm Machinery, R Crossman

Journal of the Department of Agriculture, Western Australia, Series 4

In talking of machinery replacement it seems implied that the replacement items of plant are bigger and therefore better than their predecessers. It is also implied that plant replacement is becoming more costly.

Before any decision to replace machinery, the reason for replacement should be carefully considered.

There may be alternatives to the bigger and better solution.


Calibration Of Boom Sprays, J R. Peirce Jan 1979

Calibration Of Boom Sprays, J R. Peirce

Journal of the Department of Agriculture, Western Australia, Series 4

Boom sprays have become increasingly common on Western Australian farms, allowing farmers to take advantage of modern herbicided.

Most boom sprays used on farms have 50 cm nozzle spacings and require calibrating regularily to ensure accurate herbicide application.

By following these steps, the boom will deliver accurate amounts of herbicide.


How To Select A Tractor, W T. Brown Jan 1979

How To Select A Tractor, W T. Brown

Journal of the Department of Agriculture, Western Australia, Series 4

A look at some of the factors to be considered when choosing a tractor for your farm. There is no one answer