Digital Commons Network^™

Quantitative Evaluation Of A Thrust Vector Controlled Transport At The Conceptual Design Phase, Vincent Patrick Ricketts

Mechanical and Aerospace Engineering Theses - Archive

The impetus to innovate, to push the bounds and break the molds of evolutionary design trends, often comes from competition but sometimes requires catalytic political legislature. For this research endeavor, the ‘catalyzing legislation’ comes in response to the rise in cost of fossil fuels and the request put forth by NASA on aircraft manufacturers to show reduced aircraft fuel consumption of +60% within 30 years. This necessitates that novel technologies be considered to achieve these values of improved performance. One such technology is thrust vector control (TVC). The beneficial characteristic of thrust vector control technology applied to the traditional tail-aft …

Automatic Carrier Landing System For V/Stol Aircraft Using L1 Adaptive And Optimal Control, Shashank Hariharapura Ramesh

Mechanical and Aerospace Engineering Theses - Archive

This thesis presents a framework for developing automatic carrier landing systems for aircraft with vertical or short take-off and landing capability using two different control strategies - gain-scheduled linear optimal control, and L1 adaptive control. The carrier landing sequence of V/STOL aircraft involves large variations in dynamic pressure and aerodynamic coefficients arising because of the transition from aerodynamic-supported to jet-borne flight, descent to the touchdown altitude, and turns performed to align with the runway. Consequently, the dynamics of the aircraft exhibit a highly non-linear dynamical behavior with variations in flight conditions prior to touchdown. Therefore, the implication is the need …

Additive Manufacturing And Stress Analysis Of Naturally And Artificially Optimized Celullar Structures, Sachin Jose

Mechanical and Aerospace Engineering Theses - Archive

The main objective of our research is to manufacture topology optimized cellular structures using 3D printing and polymer infusion and obtain their structural response. First, we have obtained topology optimized cellular structure of beam using an in-house topology optimization tool. The Solid Isotropic material with Penalization (SIMP) method of optimization is used for finding the optimal topology. Since we require a continuous structure where we can take advantage of additive manufacturing, a no-penalty approach was chosen. For 3D printing, first the optimized condition for manufacturing was determined. Important parameters on which manufacturing depend are Number of Shells, Infill percentage and …

Smart Bed And Contact Impact Of Flexible Bodies Using Energy Compensation Method, Pranav Parikh

Mechanical and Aerospace Engineering Theses - Archive

This work investigates robotic means to prevent pressure ulcers in human bodies. The smart bed is intended to act as an intelligent assistant to a care-giver that relieves some of the physical and mental burden involved in preventing pressure ulcers. This type of device is needed because of a labor shortage in the nursing field. The smart bed distinguishes itself from the current available measures by redistributing pressure and minimizing shear forces acting on the skin in contact. This is done by using data from the sensor grid installed on the bed surface and actuating the degrees of freedom associated …

Enhancement Of Fog-Collection Efficiency Of A Raschel Mesh Using Surface Coatings And Geometric Changes, Mithun Rajaram

Mechanical and Aerospace Engineering Theses - Archive

In a few countries, such as Chile, a Raschel mesh is widely used in the field to collect fog. In this work, we explored the possibility of enhancing fog-collection efficiency of a typical Raschel mesh through surface modification and geometric changes. We demonstrated about 100% enhancement in the fog-collection efficiency.

The Relationship Of Life Prediction For Quad Flat N0-Lead Package (Qfn )Packages Using 4 Point Bend Test And Thermal Cycle Testing, Monisha Mohan

Mechanical and Aerospace Engineering Theses - Archive

In the structural design of the Printed Circuit Boards, the stiffness modulus of the involved Fr4 and Cu layers play an important role. The 4 point bend test is one of the few test methods which is included in the JEDEC standard for the Monotonic Bend characterization for board level interconnects. The study in the past has shown that the damage mechanism of these two testing methods is similar. And also, correlation had been drawn by observation of failure mechanism through Scanning Electron Microscope (SEM). The purpose of this study is to create a methodology for co-relating 4 point bend …

Additive Manufacturing Methodologies For Multi Process And Multi Material Scenarios, Tushar Saini

Mechanical and Aerospace Engineering Theses - Archive

Additive Manufacturing processes have been developing and continuously improving but are primarily constrained to single materials, albeit some commercial multi extrusion 3D printers do exist where by it is possible to print with multi-colored fluidic polymers or at most two filaments of the same type. 3D printing an object with volumetric varying properties requires manual modification of the G-Code, not a feasible option considering the average size of G-Code generated by the slicing software. This research focuses on developing a post processing methodology that modifies the large G-Code files generated by the slicing software according to user requirements. The proposed …

Progesterone And Prostaglandin F2Α Induce Species-Typical Female Preferences For Male Sexual Displays In Cope's Gray Treefrog (Hyla Chrysoscelis), J. L. Ward, E. K. Love, Alexander T. Baugh, N. M. Gordon, J. C. Tanner, M. A. Bee

Biology Faculty Works

Endocrine systems play critical roles in facilitating sexual behavior in seasonally breeding vertebrates. Much of the research exploring this topic has focused on the endocrine correlates of signaling behavior in males and sexual proceptivity in females. What is less understood is how hormones promote the expression of the often complex and highly selective set of stimulus–response behaviors that are observed in naturally breeding animals. In female frogs, phonotaxis is a robust and sensitive bioassay of mate choice and is exhibited by gravid females during the breeding season. In stark contrast, females exhibit low phonotactic responsiveness outside the breeding season, but …

Magnetic Resonance Imaging Of Cerebrovascular Reactivity Using Gas Inhalation Challenges, Harshan Ravi

Bioengineering Dissertations - Archive

Cerebrovascular reactivity (CVR) is a measure of dilation capacity of cerebral vasculature. It is an important biomarker for the vascular functionality and integrity, and may have clinical indications in stroke, atherosclerosis, Moyamoya disease, multiple sclerosis, brain tumor, and other neurological disorders. The most commonly used approach to measure CVR is by applying a physiological maneuver to alter the arterial carbon dioxide (CO2) concentration (e.g. inhaling a small amount of CO2 which is a potent vasodilator), while continuously acquiring BOLD MR images. However, the current method suffers from several limitations related to specificity, sensitivity, and physiological modeling of the measured signal. …

Improving Water Quality Forecasting Using Data Assimilation, Hamideh Riazi

Civil Engineering Dissertations - Archive

Population growth increases agricultural, industrial and human activities which threaten the quality of water resources, especially water supply sources such as lakes and reservoirs. In potentially high-impact situations such as algal blooms, active measures such as controlled release from reservoirs may be necessary. To minimize release while meeting the water quality requirements, accurate short-range water quality forecast is necessary. Because watershed water quality models have a large number of state variables most of which are never observed, their initial conditions (IC) are subject to large uncertainties which may propagate into large forecast errors. In this research, a data assimilation (DA) …

Improving The Rainfall And Flood Frequency Analyses Using Stochastic Storm Transposition Method, Morteza Kiani

Civil Engineering Theses - Archive

Reproduction and realization of historical rainfall events provides foundations for flood and rainfall frequency analyses and the advancement of meteorological studies. Stochastic storm transposition (SST) is a method for such a purpose and enables us to perform frequency analyses by transposing observed historical storm events over any given watershed. The goal of this study is to stochastically examine the impacts of extreme events on all locations in a homogeneity zone. Storms with the same probability of occurrence on a defined homogenous neighborhood will generate various impacts due to spatial and temporal variations of the storms. Transposing storms occurring in the …

Thermo-Hydro-Mechanical Behavior Of Unsaturated Clayey Soils Via Thermo/Suction-Controlled Ring Shear Testing, Jairo Edmundo Yepes Heredia

Civil Engineering Dissertations - Archive

There is a lot of geotechnical infrastructure made of compacted soil, or resting on unsaturated ground, which involves a wide range of deformations. Calculation of foundation settlement, for instance, requires a good estimation of soil stiffness at relatively small strains. Analysis of natural and engineered earth slopes, embankments, and soil bearing capacity, on the other hand, requires good estimations of shear strength, from peak to residual. Besides, despite the critical importance of the thermo-mechanical behavior of unsaturated soils in many geotechnical applications, the effect of relatively high temperature on shear strength and stiffness properties of unsaturated soils is not yet …

Medical Recovery Services V. Olsen Appellant's Brief Dckt. 43147

Idaho Supreme Court Records & Briefs, All

No abstract provided.

Carrier Liability For Damages Incurred By Ship Passengers: The European Union As A Trailblazer Towards A Global Liability Regime?, Stefan Kirchner, Grit Tüngler, Jan Martin Hoffmann

University of Miami International and Comparative Law Review

No abstract provided.

Overcoming The Public-Private Divide In Privacy Analogies, Victoria Schwartz

UC Law Journal

When a photographer takes unauthorized aerial photographs of a company’s plant, the legal framework under which courts evaluate the case, as well as its likely outcome, depends on whether the photographer was hired by a private actor or the government. If a competitor hired the photographer, the aerial photography may constitute improper trade secret misappropriation. If, however, the government hired the photographer, the aerial photography would not violate the Fourth Amendment. This dichotomy illustrates a public-private divide in which privacy violations by the government are treated differently from privacy violations by the private sector. Despite this divide, some courts have …

Uis Bulletin, Volume 57, No. 2, December 2015, Efraín Mercado

KIP Articles

Contents: Editorial: UIS 50th Anniversary: A Time to Celebrate -- Celebration of the 50th Anniversary of the UIS in Postojna, Slovenia -- Launch of the book "Fifty years of the UIS: 1965-2015" -- UIS Proposes to Organize a UNESCO International Year of Caves in 2021 -- France Habe Prize 2015 -- Report of Commission on Cave Rescue -- Report of Commission on History of Speleology -- The Oldest Cave Map in the World -- Asian Transkarst 2015 / Born the Asian Speleological Union -- 33rd Brazilian Congress of Speleology -- Brazilian Speleological Community Supports the Initiative to the UNESCO International …

14th Meeting Of The States Parties To The Anti-Personnel Mine Ban Convention (2015), Apmbc

Global CWD Repository

The Fourteenth Meeting of the States Parties (14MSP) was a formal meeting of the 162 States Parties to the 1997 Convention on the Prohibition of the Use, Stockpiling, Production and Transfer of Anti-Personnel Mines and on their Destruction. It was held in accordance with Article 11 of the Convention and pursuant to the decision of the Convention’s 2014 Third Review Conference. At the Third Review Conference, it was agreed that the 14MSP would take place in Geneva during the week of 30 November to 4 December 2015. The Conference further agreed to designate H.E. Ambassador Bertrand de Crombrugghe of Belgium, …

Incremental Validity Of Leaderless Group Discussion Ratings Over And Above General Mental Ability And Personality In Predicting Promotion, Xavier Borteyrou, Filip Lievens, Marilou Bruchon-Schweitzer, Anne Congard, Nicole Rascle

Research Collection Lee Kong Chian School Of Business

Leaderless group discussions (LGDs) constitute one of the oldest assessment center exercises. In recent times, their added value has sometimes been questioned in light of trends to streamline assessment centers. The purpose of the present study is to examine the incremental validity of LGD ratings over cognitive ability scores and personality ratings for the prediction of extrinsic career success (i.e., promotion speed and number of promotions). We investigated this issue in the context of the promotion of French naval officers (N=93) in an academy for high-level executive positions over a 10-year period. Results indicated that LGD ratings accounted for incremental …

Gas Dynamics In Tidal Dwarf Galaxies: Disc Formation At Z = 0, Federico Lelli, Stacy Mcgaugh

Faculty Scholarship

Tidal dwarf galaxies (TDGs) are recycled objects that form within the collisional debris of interacting and merging galaxies. They are expected to be devoid of non-baryonic dark matter, since they can only form from dissipative material ejected from the discs of the progenitor galaxies. We investigate the gas dynamics in a sample of six bona fide TDGs around three interacting and post-interacting systems: NGC 4694, NGC 5291, and NGC 7252 ("Atoms for Peace"). For NGC 4694 and NGC 5291, we analyse existing HI data from the Very Large Array (VLA),while for NGC 7252 we present new HI observations from the …

The Relation Between Omani Students' Perceptions Of The Writing Strategies And Their Writing Performance, Juma B. Busaidi, Dina A. Al-Jamal

Journal of Educational and Psychological Studies

The present study aimed at exploring the relation between Omani students' percep-tions of writing strategies and their own writing performance. Three types of key universal strategies (metacognitive, cognitive, social-affective), in master’s degree research, were assumed as effective in promoting students' successful writing processes. A strategy questionnaire in or-der to map Omani EFL students' perception of strategy use as well as a writing test to identify students' actual writing performance was constructed. The present study reported that the par- ticipants perceived the metacognitive strategy of selective attention as prevailing in their writing practice. They also demonstrated interest in the social affective …

Spelling Errors Of Omani Efl Students, Sheikha A. Al-Bereiki, Abdo M. Al-Mekhlafi

Journal of Educational and Psychological Studies

The purpose of this study was to explore the types of spelling errors students of grade ten make and to find out whether there were any significant differences between males and fe- males with respect to the types of spelling errors made. The sample of the study included 90 grade ten students from four different schools in North Batinah. The researchers manipulated the use of a test that consisted of two questions: an oral dictation test of 70 words with a contex- tualizing sentence and a free writing task. The misspellings were classified into nine different types. The findings revealed …

Arabic In Foreign Language Programmes: Difficulties And Challenges, Fatma Y. Al-Busaidi

Journal of Educational and Psychological Studies

The purpose of this study was to review the reported literature regarding Arabic language programmes. It gives an overview of the historical background of Teaching Arabic as a Foreign Language (TAFL) programmes. It also provided a brief description of the Arabic language and its characteristics, and how they might cause some difficulties. Specifically, the diglossic phenomenon in Arabic programmes and how Arabic programmes deal with diglossia was discussed. Pedagogical factors, such as the lack of clearly articulated objectives in TAFL, the lack of coordination between Arabic programmes, the lack of experienced and qualified teachers, the shortage of materials and resources …

Mindfulness Of Career Counselors Within The Omani’S Context, Bakkar S. Bakkar, Muna A. Al-Bahrani

Journal of Educational and Psychological Studies

This study aimed to explore the variation of Omani career counselors’ mindfulnesslevel, in relation to their gender, qualifications, experience, age, and social status. The Mindful Attention Awareness Scale was used to assess the mindfulness level of 164 career counselors from the Sultanate of Oman. The findings showed that mindfulness level was high among career counselors. The results also revealed significant differences due to gender. Males’ level of mindfulness was higher than females. N o differences were found due to qualifications, experience, age, and social status on the level of mindfulness. Recommendations suggested further research to examine the relationship between mindfulness …

A Small Acoustic Goniometer For General Purpose Research, Michael Pook

Boise State University Theses and Dissertations

Understanding acoustic events and monitoring their occurrence is a useful aspect of many research projects. In particular, acoustic goniometry allows researchers to determine the source of an event based solely on the sound it produces. The vast majority of the acoustic goniometry research projects used custom hardware targeted to the specific application under test. Unfortunately, due to the wide range of sensing applications, a flexible general purpose hardware/firmware system does not exist for this research. This dissertation focuses on the development of such a system which encourages the continued exploration of general purpose hardware/firmware and lowers barriers to research in …

Effects Of Bone Morphogenetic Protein-2 And Parathyroid Hormone-Related Peptide On Collagen Xi During Skeletal Development, Neda Shefa

Boise State University Theses and Dissertations

Long bones develop via endochondral ossification, a process in which cartilage precedes bone. During endochondral ossification prechondrogenic cells undergo proliferation and apoptose as cells of the periosteum differentiate into bone. The process of endochondral ossification is regulated by a group of endocrine as well as paracrine molecules that includes bone morphogenetic protein-2 (BMP-2) and parathyroid hormone-related peptide (PTHrP). Collagens are extracellular matrix molecules that are present in a spatiotemporal manner during endochondral ossification. Collagen XI alpha 1 (Col11a1) is a minor fibrillar collagen that is alternatively spliced during development and can result in up to eight different spliceforms. During endochondral …

Meet Me Monday: Case Study On A Community Health Program Through The Lens Of The Elaboration Likelihood Model, Joshua Schlaich

Boise State University Theses and Dissertations

This case study employs the Elaboration Likelihood Model as a framework for understanding one Idaho/Oregon Health System's community health program and weekly walking event. Meet Me Monday, a program started in 2013 due to many organizational and federal goals to improve patient population and community health, has been perceived to have struggled with influencing increased and sustained participation. This study focuses on the communicative efforts of the Meet Me Monday community health program, and looks to gain a fuller understanding of the influences and moderating variables to participation.

Utilizing data sources such as semi-structured interviews with program organizers, surveying of …

Industrial Energy Consumption, Benchmarking, And Analysis In The United States, Daniel Maldonado

Mechanical Engineering Undergraduate Honors Theses

The purpose of this paper is to analyze the energy consumption of the industrial sector in the United States, and to identify the tools that can be used to minimize the consumption and improve the energy efficiency of all facilities in the country. The first part of the paper is a historical analysis of the industrial sector energy consumption, where the different energy sources are identified. The second part details different electronic tools that will provide facilities the ability of performing benchmarking, in order to understand their energy performance. Finally, the third part of this paper provides information about the …

Deep Fluid Inputs Into The Continental-Scale Nubian Sandstone Aquifer System Constrained By Hydrochemical, Stable Isotope, And Noble Gas Data, Abdel Mawgoud Mohammed

Dissertations

The Nubian Sandstone Aquifer System (NSAS) of northeastern Africa is one of the largest confined fossil-water aquifer systems in the world, with several nations relying on it (Egypt, Libya, Sudan and Chad). This groundwater is the biggest and in some cases the only future source of water to meet the development goals of each NSAS country. This study provides new geochemical data from the main oases of the Western Desert of Egypt and a compilation of published hydrochemical data from the regional aquifer. Interpretation of results suggests heterogeneous fluid mixing within the aquifer, the potential for hydrochemical sub-basins, and a …

A Language Learning And Teaching Journey: Practicalities And Possibilities, Elizabeth Irene Abell

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Within this portfolio, the reader will find the work that the author has completed over the two years in the Master of Second Language Teaching (MSLT) program at Utah State University and a demonstration of her professional growth as an instructor over this period of time. The first major part is teaching philosophy, in which the author discusses: the experiences as a student that have shaped her as a teacher, the various teaching contexts in which she may work in the future, her personal philosophy of language teaching shaped by what she has learned in the MSLT program, and the …

Co-Rotational Finite Element Solid Simulation With Collisions, Patrick Riordan

Computer Science and Software Engineering

This paper is a tutorial on how to implement a deformable solid simulation with collisions based off of Matthias Mueller's Real Time Physics Course Notes. It covers the topics continuum mechanics, finite element analysis, implicit Euler integration, and handling collision.