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(101 - 120 of 2,806)
Pages
- Title
- Water power development at Iowa Falls, Iowa
- Creator
- Dowdell, Charles O.
- Date
- 2009, 1907
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/waterpowerdevelo00dowd
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaf 12
- Title
- Study of the transmission of heat through tile and concrete fireproofing
- Creator
- Snow, C. A.
- Date
- 2009, 1912
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/studyoftransmiss00snow
Thesis (B.S.)--Armour Institute of Technology
- Title
- SUSTAINABLE MULTILINGUAL COMMUNICATION: MANAGING MULTILINGUAL CONTENT USING FREE AND OPEN SOURCE CONTENT MANAGEMENT SYSTEMS
- Creator
- Kelsey, Todd
- Date
- 2011-05-03, 2011-05
- Description
-
Multilingual content management systems, combined with streamlined processes and inexpensive organizational tools, make it possible for...
Show moreMultilingual content management systems, combined with streamlined processes and inexpensive organizational tools, make it possible for educators, non-profit entities and individuals with limited resources to develop sustainable and accessible multilingual Web sites. The research included a review of what’s been done in the theory and practice of designing Web sites for multilingual audiences. On the basis of that review, a series of sustainable multilingual Web sites were created, and a series of approaches and systems were tested, including MediaWiki, Plone, Drupal, Joomla, PHPMyFAQ, Blogger, Google Docs and Google Sites. There was also a case study on “Social CMS”, which refers to emergent social networks such as Facebook. The case studies are reported on, and conclude with high-level recommendations that form a roadmap for sustainable multilingual Web site development.
Ph.D. in Technical Communication, May 2011
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- Title
- ADVANCING DESIGN SIZING AND PERFORMANCE OPTIMIZATION METHODS FOR BUILDING INTEGRATED THERMAL AND ELECTRICAL ENERGY GENERATION SYSTEMS
- Creator
- Zakrzewski, Thomas
- Date
- 2017, 2017-07
- Description
-
Combined electrical and thermal energy systems (i.e., cogeneration systems) will play an integral role in future energy supplies because they...
Show moreCombined electrical and thermal energy systems (i.e., cogeneration systems) will play an integral role in future energy supplies because they can yield higher overall system fuel utilization and efficiency, and thus produce fewer greenhouse gas emissions, than traditionally separate systems. However, methods for both design sizing and performance optimization for cogeneration systems and commercial buildings lag behind the tremendous advancements that have been made in building performance simulation methods. Therefore, the overall goal of this research is to develop and apply novel cogeneration system modeling techniques for optimizing design sizing and dispatch of generation sets that reduce energy use, energy costs, and greenhouse gas emissions. This research is divided into four main research objectives: (1) generalizing cogeneration performance of lean burn natural gas spark ignition reciprocating engines, (2) developing a new Design and Optimization of Combined Heat and Power (DOCHP) systems optimization tool for improving design-sizing of building-integrated and grid-tied CHP systems, (3) demonstrating the utility of the DOCHP tool with several practical applications, and (4) integrating on-site intermittent renewable energy systems into the DOCHP tool to analyze micro-grid applications. This research leverages recent developments in multiple areas of building and system simulation methods. DOCHP advances design sizing and performance optimization methods for building integrated thermal and electrical energy generation systems through the application of an evolutionary artificial intelligence-based genetic algorithm and its ability to resolve to non-linear optimization with discrete constraints while considering non-linear part-load generation set performance curves.
Ph.D. in Civil Engineering, July 2017
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- Title
- DEVELOPMENT OF AN IMPLICITLY COUPLED ELECTROMECHANICAL AND ELECTROMAGNETIC TRANSIENTS SIMULATOR FOR POWER SYSTEMS
- Creator
- Abhyankar, Shrirang
- Date
- 2011-11, 2011-11
- Description
-
The simulation of electrical power system dynamic behavior is done using tran- sient stability simulators (TS) and electromagnetic transient...
Show moreThe simulation of electrical power system dynamic behavior is done using tran- sient stability simulators (TS) and electromagnetic transient simulators (EMT). A Transient Stability simulator, running at large time steps, is used for studying rela- tively slower dynamics e.g. electromechanical interactions among generators and can be used for simulating large-scale power systems. In contrast, an electromagnetic transient simulator models the same components in finer detail and uses a smaller time step for studying fast dynamics e.g. electromagnetic interactions among power electronics devices. Simulating large-scale power systems with an electromagnetic transient simulator is computationally inefficient due to the small time step size in- volved. A hybrid simulator attempts to interface the TS and EMT simulators which are running at different time steps. By modeling the bulk of the large-scale power system in a transient stability simulator and a small portion of the system in an electromagnetic transient simulator, the fast dynamics of the smaller area could be studied in detail, while providing a global picture of the slower dynamics for the rest of power system. In the existing hybrid simulation interaction protocols, the two simulators run independently, exchanging solutions at regular intervals. However, the exchanged data is accepted without any evaluation, so errors may be introduced. While such an explicit approach may be a good strategy for systems in steady state or having slow variations, it is not an optimal or robust strategy if the voltages and currents are varying rapidly, like in the case of a voltage collapse scenario. This research work proposes an implicitly coupled solution approach for the combined transient stability and electromagnetic transient simulation. To combine the two sets of equations with their different time steps, and ensure that the TS and EMT solutions are consistent, the equations for TS and coupled-in-time EMT equations are solved simultaneously. While computing a single time step of the TS equations, a simultaneous calculation of several time steps of the EMT equations is proposed. Along with the implicitly coupled solution approach, this research work also proposes to use a three phase representation of the TS network instead of using a positive-sequence balanced representation as done in the existing transient stability simulators. Furthermore a parallel implementation of the three phase transient stability simulator and the implicitly coupled electromechanical and electromagnetic transients simulator, using the high performance computing library PETSc, is presented. Re- sults of experimentation with different reordering strategies, linear solution schemes, and preconditioners are discussed for both sequential and parallel implementation.
Ph.D. in Electrical Engineering, December 2011
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- Title
- USING CONFIDENCE INTERVALS WITH A SMALL SAMPLE SIZE ADJUSTMENT TO ASSESS ADVERSE IMPACT
- Creator
- May, Jill L.
- Date
- 2012-03-27, 2012-05
- Description
-
With increased diversity in the U.S. workforce, there has become a greater need for organizations to defend against accusations of...
Show moreWith increased diversity in the U.S. workforce, there has become a greater need for organizations to defend against accusations of discrimination and thus a need to produce more accurate adverse impact statistics in discrimination cases. The purpose of the present study is to investigate two adjustments to a confidence interval procedure for calculating adverse impact to see if they give more adequate performance over the unadjusted Morris and Lobsenz (2000) confidence interval procedure. A Monte Carlo simulation revealed that using an adjustment for small sample sizes alleviates some of the problems found for the confidence interval procedure found in previous research. Specifically, adding a 0.5 adjustment to the confidence interval procedure increases the accuracy over the unadjusted procedure and the Agresti and Caffo (2000) procedure. Implications for practioners and researchers are included in the discussion.
M.S. in Psychology, May 2012
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- Title
- DIFFERENT EXPLORATION ACTIVITY AND DETECTION THRESHOLD TOWARDS ODOR SETS BETWEEN CONNEXIN 36 KNOCKOUT MICE AND WILD-TYPE MICE
- Creator
- Chai, Xiaomeng
- Date
- 2012-04-16, 2012-05
- Description
-
The sense of smell allows an organism to be aware of the chemical information of the external world. In most land animals, the olfactory...
Show moreThe sense of smell allows an organism to be aware of the chemical information of the external world. In most land animals, the olfactory system enables the perception of both volatile chemicals, as well as pheromones--chemicals released by animals that regulate their social activities. Among several factors that mediate olfaction, connexin 36 (Cx36), a subunit of gap junctions, has been suggested to play a crucial role in the olfactory system. In the research presented herein, I performed habituation/dishabituation studies on both Cx36 knockout (Cx36 KO) and wild-type mice to determine their exploration patterns towards four odorants. The results indicate that Cx36 KO and wild-type mice behaved differently when they were given defined odorants. In general, Cx36 KO mice spent more time exploring odorants. Cx36 KO and wild-type mice also exhibited different detection threshold towards given odorants. Moreover, cross-habituation between benzaldehyde and octaldehyde was established in Cx36 KO mice at the concentration of 10-4%, which was different from that in wild-type mice. These results may suggest important functions of Cx36 gap junctions in odor detection and integration in mammals. Keywords: Connexin 36, gap junction, olfactory system, habituation/dishabituation
M.S. in Biology, May 2012
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- Title
- A study of the "cracking" of petroleum
- Creator
- Heritage, Clark Cable, Hook, Frank William.
- Date
- 2009, 1914
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/studyofcrackingo00heri
Thesis (B.S.)--Armour Institute of Technology, 1914 B.S. in Chemical Engineering, 1914
- Title
- ADVANCED TRACER KINETIC MODELS FOR IMPROVED TUMOR MARGIN DETECTION AND GUIDING THERAPY
- Creator
- Sinha, Lagnojita
- Date
- 2014, 2014-07
- Description
-
Cancer continues to be the second leading cause of death in the world with one in two individuals suffering from some form of cancer within...
Show moreCancer continues to be the second leading cause of death in the world with one in two individuals suffering from some form of cancer within their lifetimes [1]. The main objective in most cancer therapies is to achieve a complete resection of the cancerous cells, which in surgical approaches is evident from the diagnosis of positive resection margins during postoperative pathology. However, pathological analysis is performed after the patient has been discharged. Thus technologies capable of identifying tumor margins in resected samples intraoperatively could substantially reduce the psychological and economical burden of “call-back” surgeries. As a step in this direction, a wide-field Raman spectroscopy system was employed, which has the capacity to discriminate between tumor and healthy tissue through a “dual-tracer” staining approach within the surgical window. The approach entails dipping the resected tissue in two tracers: one targeted to a cancer specific cell-surface receptor, and another left “untargeted”. In this experiment human glioma (U251) and human epidermoid (A431) tumors were grown subcutaneously in ten nude athymic mice. The data obtained from the Raman spectra of different tissue specimens were then analyzed through tracer kinetic modeling to quantify cancer molecule abundance as a surrogate of cancer presence. The salient finding in this study was that the model was able to predict the expected differences in EGFR concentration amongst the healthy tissue, U251, and A431. Kinetic model estimation of the ratio of EGFR concentration in U251 and A431 cell lines were in the ratio of 2:1, which correlates, with the expected ratio of EGFR concentration determined by flow cytometry which was close to 4:1. This technology not only promises to xii highlight tumor margins on a molecular level but can also be leveraged to analyze the molecular environment of the tumor to guide adjuvant precision therapies. Tracer kinetic modeling approaches were also applied to a guided precision therapy called Photodynamic therapy. Not only could the analysis of data provide parameter values for the tracer kinetics but an approach was also developed which with only a few initial data points could predict the time optimal for therapy in advance of the drug concentration maximum.
M.S. in Electrical Engineering, July 2014
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- Title
- A system of street pavement for Naperville, Illinois
- Creator
- Beckman, H. E., Johnson, R. W., Peterson, I. C.
- Date
- 2009, 1909
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/systemofstreetpa00beck
Thesis (B.S.)--Armour Institute of Technology
- Title
- PURIFICATION AND CRYSTALLIZATION OF D16/17 SPECTRlN REPEATS OF DYSTROPHIN
- Creator
- Tom, Tinku
- Date
- 2012-12-26, 2012-12
- Description
-
Muscular dystrophies are a group of genetic disorders characterized by progressive muscle weakness and wasting. Most of the dystrophies are...
Show moreMuscular dystrophies are a group of genetic disorders characterized by progressive muscle weakness and wasting. Most of the dystrophies are due to the anomalies in dystrophin or its associated proteins. Neuronal nitric oxide synthase (nNOS) is a vasodilator localized to the sarcolemma that acts in response to the increased metabolic rates during muscle contraction. nNOS localization is impaired in most Duchenne muscular dystrophies (DMD) cases. The nNOS is localized by both dystrophin and syntrophin acting together. The D16/17 spectrin repeats is the part of dystrophin that binds to nNOS. It was found that restoring the dystrophin nNOS interaction could ameliorate the effects of dystrophy in mdx mouse (mouse model for DMD). The goal of this project was to crystallize D16/17 in order to study the structural details of this polypeptide and its binding site to nNOS. The BL21 clones of D16/17 gene with a GST tag were cultured and lysed. Affinity chromatography was used to isolate the protein with the GST tag. The tag was enzymatically cleaved using thrombin and was purified from GST and other proteinsusing ion-exchange chromatography. Highly pure protein was obtained. The solution was stored in -800 C. Optimum well conditions for crystallization was found using the PEG ION-II crystallization kit from Hampton. Three well conditions were varied to find the conditions that yield best crystals.
M.S. in Molecular Biochemistry and Biophysics, December 2012
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- Title
- Test of a three ton refrigerating plant
- Creator
- Beerbaum, A. J, Strale, N. W, Keachie, P. L.
- Date
- 2009, 1912
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/testofthreetonre00beer
Thesis (B.S.)--Armour Institute of Technology, 1912 B.S. in Mechanical Engineering, 1912
- Title
- IRON INCORPORATION INTO FERROELECTRIC LEAD TITANATE
- Creator
- Ganegoda, Hasitha
- Date
- 2012-11-27, 2012-12
- Description
-
Incorporation of iron into ferroelectric lead titanate with ABO3 perovskite structure is widely utilized to fabricate materials with...
Show moreIncorporation of iron into ferroelectric lead titanate with ABO3 perovskite structure is widely utilized to fabricate materials with ferroelectric and ferromagnetic order. These solid solutions exhibit room temperature ferromagnetic properties at iron concentration as low as 1 mole%. Iron (Fe3+) is highly compatible with titanium (Ti4+) in ionic radii and obviously incompatible in the valence state. Magnetoelectric coupling has been observed in 50 mole% Fe substituted lead titanate. The molecular mixing of precursor materials in wet chemical synthesis such as sol-gel has advantage over conventional solid state sintering in achieving higher solubility of the substituent. A series of Pb(FexTi1−x)O3− solid solution in the composition range x = 0 to 1 has been synthesized using sol-get route, followed by a moderate temperature (700 C) calcination. The structure and properties of samples were characterized using x-ray diffraction (XRD), x-ray absorption spectroscopy (XAS), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDX), dielectric spectroscopy, Raman spectroscopy, and magnetic measurements. SEM results indicated a gradual change in sample morphology, changing from individual particles to nano-aggregates with Fe concentration. EDX confirmed uniform distribution of dopants when Fe concentration x 0.3 and Fe concentration close to nominal composition with possibility of lead loss. XRD results indicated a rapid reduction of tetragonal distortion upon Fe substitution, Fe solubility limit of 10 mole%, and PbFe12O19 impurity phase formation at compositions x 0.4. XAS clearly indicated that Ti prefers a 6 coordinated distorted oxygen octahedra and Fe is surrounded by 5 oxygens situated at a similar distance. Other measurements suggested that ferroelectric and ferromagnetic ordering may arise in Ti-rich and Fe-rich phases, respectively. None of the samples below x = 0.2 was found to be ferromagnetic at room temperature.
PH.D in Physics, December 2012
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- Title
- BROAD AND NARROW PERSONALITY TRAITS AS PREDICTORS OF RISKY DRIVING BEHAVIORS
- Creator
- Watson, Jeremy Beau
- Date
- 2011-04-05, 2011-05
- Description
-
The accurate prediction of risky driving behaviors or possible accident and injury involvement contains several benefits as even minor...
Show moreThe accurate prediction of risky driving behaviors or possible accident and injury involvement contains several benefits as even minor increases in detection may result in possible avoidance of accidents and loss of life. This study examined the relationship between both broad and narrow personality traits and risky driving behaviors and the role of the bandwidth-fidelity dilemma. Based on archival data, 680 adults from a community sample in the Pacific Northwest completed the 16 Personality Factor Questionnaire (16PF) and a daily behavior inventory of act frequencies. Results indicated that broad and narrow personality traits are equally predictive of risky driving behaviors, but there are some appreciable differences at the primary factor level. Previous research, implications, and limitations to this study are also discussed.
M.S. in Psychology, May 2011
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- Title
- Study and design of tall office building power plant
- Creator
- Hill, Warren E
- Date
- 2009, 1905
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/studydesignoftal00hill
Thesis (B.S.)--Armour Institute of Technology
- Title
- Test of a Delavergne oil engine
- Creator
- Sieck, William
- Date
- 2009, 1911
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/testofdelavergne00siec
Thesis (B.S.)--Armour Institute of Technology, 1911 B.S. in Mechanical Engineering, 1911
- Title
- The structural design of a three-story reinforced concrete cold storage building
- Creator
- Wamsley, Gage R
- Date
- 2009, 1920
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/structuraldesign00wams
Thesis (B.S.)--Armour Institute of Technology;Includes folded leaves in back pocket
- Title
- Waterproofing of concrete by addition of commerical compounds
- Creator
- Hills, G. B, Cleaver, J. G, Schmidt, Fred
- Date
- 2009, 1911
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/waterproofingofc00hill
Thesis (B.S.)--Armour Institute of Technology, 1911 B.S. in Civil Engineering, 1911
- Title
- FUNCTION APPROXIMATION WITH KERNEL METHODS
- Creator
- Zhou, Xuan
- Date
- 2015, 2015-12
- Description
-
This dissertation studies the problem of approximating functions of d variables in a separable Banach space Fd. In particular we are...
Show moreThis dissertation studies the problem of approximating functions of d variables in a separable Banach space Fd. In particular we are interested in convergence and tractability results in the worst case setting and in the average case setting. The symmetric positive definite kernel in both settings is of a product form Kd(x, t) := d =1 1 − α2 + α2 Kγ (x , t ) for all x, t ∈ Rd. The kernel Kd generalizes the anisotropic Gaussian kernel, whose tractability properties have been established in the literature. For a fixed d, we study rates of convergence, which indicate how quickly approximation errors decay. Since rates of convergence can deteriorate quickly as d increases, it is desirable to have dimension-independent convergence rates, which corresponds to the concept of strong polynomial tractability. We present sufficient conditions on {α }∞ =1 and {γ }∞ =1 under which strong polynomial tractability holds for function approximation problems in Fd. Numerical examples are presented to support the theory and guaranteed automatic algorithms are provided to solve the function approximation problem in a straightforward and efficient way. viii
Ph.D. in Applied Mathematics, December 2015
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- Title
- COMPLETE PLASTID GENOME OF THE HEMIPARASITIC PLANT PEDICULARIS REX
- Creator
- Yang, Jingyi
- Date
- 2015, 2015-07
- Description
-
Pedicularis rex is a hemiparasitic plant from the Orobanchaceae family. Hemiparasites, also called semiparasites, are partly dependent on...
Show morePedicularis rex is a hemiparasitic plant from the Orobanchaceae family. Hemiparasites, also called semiparasites, are partly dependent on their host and, while they steal nutrients and other metabolites like other parasites, they have retained their photosynthesis ability. To better understand the hemiparasitic lifestyle of Pedicularis rex and what remains of its photosynthetic capability, we have determined the complete sequence of its plastid chromosome. The chloroplast genome of Pedicularis rex is 153,650 base pairs-long and exhibits a typical quadripartite structure with a large single copy (LSC) region and a small single copy (SSC) region separated by two inverted repeats (IR). A total of 79 unique protein-coding genes, including 9 pseudogenes, 30 tRNA- and 4 rRNA-encoding genes were retained in the plastid genome. Compared to the plastome of its close non-parasitic relative Lindenbergia philippensis, only one protein-coding gene and one intron are missing from P. rex but many genes show signs of pseudogenization. Pseudogenization in the P. rex plastid genome was found to be mainly caused by single site insertions, deletions or substitutions. The overall high level of homology between the P. rex and L. philippensis plastomes may explain why P. rex shows weak host dependence. However, how P. rex maintains its photosynthetic capability despite featuring a number of potentially dysfunctional pseudogenes involved in photosynthesis is unclear, and the minimal set of genes that is required for hemiparasitic plants to keep their autotrophic lifestyle is still unknown.
M.S. in Biology, July 2015
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