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(4,241 - 4,260 of 10,083)
Pages
- Title
- ELECTRIC VEHICLE (EV) STORAGE SUPPLY CHAIN RISK AND THE ENERGY MARKET: A MICRO AND MACROECONOMIC RISK MANAGEMENT APPROACH
- Creator
- Aguilar, Susanna D.
- Date
- 2015, 2015-12
- Description
-
NO ABSTRACT
Ph.D. in Management Science, December 2015
- Title
- Design for power plant
- Creator
- Henwood, P. E.
- Date
- 2009, 1910
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/designforpowerpl00henw
Thesis (B.S.)--Armour Institute of Technology
- Title
- Design for the proposed outer harbor of the city of Chicago
- Creator
- Ferrenz, Tirrell J
- Date
- 2009, 1911
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/designforpropose00ferr
Thesis (B.S.)--Armour Institute of Technology, 1911 Bibliography: leaf iii B.S. in Civil...
Show morehttp://www.archive.org/details/designforpropose00ferr
Thesis (B.S.)--Armour Institute of Technology, 1911 Bibliography: leaf iii B.S. in Civil Engineering, 1911
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- Title
- Design and estimate of approximate cost of a sanitary sewer system for the village of Barrington, Cook and Lake counties, Illinois
- Creator
- Jucker, J., Jr, Trinkaus, G. J
- Date
- 2009, 1915
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/designestimateof00juck
Thesis (B.S.)--Armour Institute of Technology; Includes folded leaves in back pocket;...
Show morehttp://www.archive.org/details/designestimateof00juck
Thesis (B.S.)--Armour Institute of Technology; Includes folded leaves in back pocket; Bibliography: leaf 1
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- Title
- The design and estimated weight of a cantilever bridge
- Creator
- Zeman, Leonard, Siedenstrang, Otto
- Date
- 2009, 1914
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/designestimatedw00zema
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaves 55-60
- Title
- Design and experimental study of a capillary electrometer
- Creator
- Kahn, Lamos, Ostergren, Harry
- Date
- 2009, 1909
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/designexperiment00kahn
Thesis (B.S.)--Armour Institute of Technology
- Title
- Design and estimate of the improvement of the fifth street road through the Little Vermillion Valley at La Salle, Illinois
- Creator
- Eliel, R. G, Clarkson, W. Jr., Eckert, J. M
- Date
- 2009, 1910
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/designestimateof00elie
Thesis (B.S.)--Armour Institute of Technology, 1910 B.S. in Civil Engineering, 1910
- Title
- Design and estimate of cost of steel superstructure and concrete substructure of a river crossing for highway traffic
- Creator
- Holmboe, J. A.
- Date
- 2009, 1914
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/designestimateof00holm
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaf 58
- Title
- A design for the Hocking Valley power project
- Creator
- Burris, Edward, Deering, John J., Mammes, Harry A, Sullivan, Thomas F
- Date
- 2009, 1915
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/designforhocking00burr
Thesis (B.S.)--Armour Institute of Technology;Includes folded leaves in back pocket
- Title
- The design and equipment of a metallographic polishing machine
- Creator
- Hallett, John A.
- Date
- 2009, 1921
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/designequipmento00hall
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaf 18
- Title
- DESIGN AND OPTIMIZATION OF CONFIGURABLE PASSIVE COMPONENTS FOR CMOS MILLIMETER-WAVE INTEGRATED CIRCUITS
- Creator
- Liu, Gui
- Date
- 2011-05-10, 2011-05
- Description
-
With the rapid growth of wireless communications, there is an increasing demand for low cost, low power consumption, high data rates and high...
Show moreWith the rapid growth of wireless communications, there is an increasing demand for low cost, low power consumption, high data rates and high density integrated circuits. The continuous scaling of CMOS technologies promises to achieve higher frequencies of operation in the millimeter-wave (mm-wave) frequency regime. To enable lager bandwidth for higher data rates wireless applications, many efforts have been focused on the design of mm-wave CMOS integrated circuits. The emerging mm-wave wireless commercial applications such as Wireless Hi-definition Video (60 GHz), automotive radar (77 GHz) and mm-wave imaging system (94 GHz) have brought new challenges in devices technology and systems. There is an ever increasing demand for multi-band and multi-mode integrated wireless communication systems which have the advantages of power and area savings. Therefore, flexible and configurable mm-wave on-chip components and circuits are needed to accommodate a wide variety of wireless communication standards. On the other hand, the first silicon success of the challenging mm-wave integrated circuits requires superior and robust design capabilities in cutting-edge technologies. To satisfy customers by providing them with the fastest time-to-market and the lowest total cost, the configurable multiband mm-wave solution is preferred. Design of on-chip passive components operating at millimeter wave frequencies presents several challenges due to the ohmic loss, parasitic inductance and capacitance. Therefore, it requires both an accurate model and electromagnetic (EM) simulation tools to characterize the passive components. The other challenge of design of mm-wave on-chip passives is process variations which can have a significant effect on the robustness of the passive components and circuits. Methodology to compensate and adjust for process variations is needed. Passives that can be configured after fabrication would be an attractive way to obtain accurate parameters and overcome effects of process variations. The configurable Multilayer Coplanar Waveguide (MCPW) based transmission lines offer convenient method to alleviate the problem of process variations and obtain accurate inductor values. This dissertation focuses on the design of mm-wave passive components and their applications. Model, EM simulation, and optimization of several novel MCPW-based configurable inductors are presented. A 77-GHz voltage controlled oscillator (VCO) and a 77-GHz receiver employing the configurable inductors have been realized. The 77-GHz VCO with MCPW-based configurable inductor exhibits low phase noise and wide frequency tuning range. The 77-GHz receiver achieves low power and state-of-the-art performance. The successful implementations of several individual configurable passive components, a 77-GHz VCO, and a 77-GHz receiver demonstrate the feasibility to achieve good performance and robust design with configurable passive components.
Ph.D. in Electrical Engineering, May 2011
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- Title
- A LONGITUDINAL STUDY OF POSTTRAUMATIC SYMPTOMS AND POSTTRAUMATIC GROWTH IN ONCOLOGY PATIENTS
- Creator
- Thilges, Sarah R
- Date
- 2013, 2013-07
- Description
-
Cancer has been observed and studied within the development of both posttraumatic stress disorder (PTSD) and posttraumatic growth (PTG)...
Show moreCancer has been observed and studied within the development of both posttraumatic stress disorder (PTSD) and posttraumatic growth (PTG) although reported prevalence rates of PTSD vary greatly and PTG rates are even less established. The current longitudinal study seeks to elucidate which factors are related to endorsing PTSD and PTG symptoms among oncology patients. One hundred and twenty-five patients completed measures at Time 1 assessing rates and predictors of PTSD and within the same sample, 75 patients completed measures assessing rates and predictors of PTG four years later (Time 2). A model containing utilization of venting along with greater trauma impact ratings significantly predicted PTSD symptoms at Time 1, although none of the variables were independent significant predictors. At Time 2, results indicate using spirituality as support and greater obsessive and depressive symptoms at T1 predicted PTG although only spirituality was a significant independent predictors. Results have implications for clinical and research work to address and monitor potential risk factors for distress and strengths which may promote PTG.
PH.D in Psychology, July 2013
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- Title
- ANTI-STIGMA PROGRAMS: STIGMA IN CAMPUS POlICE OFFICERS
- Creator
- Rafacz, Jennifer D.
- Date
- 2012-07-19, 2012-07
- Description
-
It has been proposed that the most effective way to combat mental illness stigma is to focus on power groups who have a direct impact on the...
Show moreIt has been proposed that the most effective way to combat mental illness stigma is to focus on power groups who have a direct impact on the lives of persons with serious mental illness. With the increase of violence and need for mental health services on college campuses, campus police officers are seen as an important power group for persons with serious mental illness. This study assessed the effects of online contact versus online education anti-stigma programs on campus police officers attitudes toward persons with serious mental illness. The study also considered moderators of contact specifically level of familiarity, state empathy, and trait empathy. It was found that the online program was not effective in changing attitudes. The research also suggested that the attitudes of the campus police officers were generally non-stigmatizing other than the endorsement of fear/danger. Both state and trait empathy were found to be moderators helping behaviors and social distance. Level of familiarity was not found to be a moderator of social distance. The findings suggest that future research and stigma work with campus police officers should focus on in vivo behaviorally driven interventions such as crisis intervention training with a focus on danger/fear.
Ph.D. in Psychology, July 2012
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- Title
- A COMPARISON OF META-ANALYTIC PROCEDURES WHEN PRE- AND POSTTEST VARIANCES ARE HETEROGENEOUS
- Creator
- Collins, Michael W.
- Date
- 2011-11, 2011-12
- Description
-
Meta-analysis is a statistical method for aggregating summary results from archival research. Traditional meta-analysis procedures that...
Show moreMeta-analysis is a statistical method for aggregating summary results from archival research. Traditional meta-analysis procedures that involve repeated measures assume homogeneous variances in pretests and posttests, an assumption which is often violated in training evaluation contexts due to variance inflation in posttests. A new meta-analytic procedure that allows for heterogeneous variance in pretests and posttests was tested in the context of leadership and managerial training programs. Application of the new method revealed greater sampling variance and less between-study variance than traditional meta-analysis with little effect on estimation of the mean effect size. However, the procedure screened out a large number of studies due to the intensive data requirements, which limited the number of usable studies for the meta-analysis.
Ph.D. in Psychology, December 2011
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- Title
- HARDWARE-EFFICIENT VLSI IMPLEMENTATION FOR PARALLEL LINEAR-PHASE DIGITAL FIR FILTER
- Creator
- Tsao, Yu-chi
- Date
- 2011-11, 2011-12
- Description
-
Along with the explosive growth of multimedia applications, the number of gates required and the area consumed in very-large-scale integration...
Show moreAlong with the explosive growth of multimedia applications, the number of gates required and the area consumed in very-large-scale integration (VLSI) for digital signal processing (DSP) is getting higher and higher. Therefore, the demand for low-complexity and low-cost VLSI architectures for DSP, which occupies area as small as possible while remaining high performance, is imperatively needed. Finite impulse response (FIR) digital filter is one of the most widely used fundamental devices performed in DSP systems, ranging from wireless communications to video and image processing. Furthermore, when narrow transition band characteristics are required, the much higher order in the FIR filter is unavoidable. For instance, a 576-tap digital filter is used in video ghost canceller for broadcast television, which reduces the effect of multi-path signal echoes. On the other hand, parallel and pipelining processing are two techniques used in DSP applications, which both can be exploited to reduce the power consumption. Parallel processing applied on FIR digital filter can either increase the throughputs for high-speed processing or reduce the power consumption of the original sequential filter by lower supply voltage. Hence, there have been several architectures for parallel FIR digital filter proposed in the past. However, for symmetric convolutions, linear phase digital FIR filter, these proposed architectures are not beneficial in terms of hardware consumption. In this dissertation, new parallel FIR digital filter architectures which can save significant hardware cost by exploiting the inherent nature of symmetric convolutions, namely linear phase digital FIR filter, are presented. This dissertation is mainly divided into four chapters. In chapter one, some prerequisites as the background related to parallel finite impulse response (FIR) digital xi filter design and implementation are introduced, including conventional parallel FIR digital filter architectures, parallel FIR digital filter structures based on fast FIR algorithm (FFA), previously proposed architectures for parallel FIR filter, maximum absolute difference (MAD) quantization algorithm, canonic signed digit (CSD) representation and CSD multipliers for constant multiplications, are introduced and reviewed. In chapter two, the proposed parallel FIR digital filter structures for symmetric convolutions of even length are presented, in which the complexity and experimental results are analyzed and compared with FFA-based parallel FIR digital filter and other previously proposed structures. In chapter three, the proposed parallel FIR digital filter architectures for symmetric convolutions of odd length are presented, in which the complexity and the benefit of structures are analyzed and compared with FFA-based parallel FIR digital filter and other previously proposed structures The last chapter, chapter four, gives the summary and the conclusion of the proposed parallel linear-phase FIR digital filter.
Ph.D. in Electrical Engineering, December 2011
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- Title
- PARTICLE FILTERING ESTIMATION APPROACH IN ADVANCED DIGITAL COMMUNICATION SYSTEMS
- Creator
- Huang, Lun
- Date
- 2013, 2013-05
- Description
-
The ever-increasing volume of users and the demand for more communication services bring about many advanced modulation and demodulation...
Show moreThe ever-increasing volume of users and the demand for more communication services bring about many advanced modulation and demodulation technologies which are developed to increase the spectrum efficiency and cope with challenging transmission conditions in digital communications. However, it is difficult to improve the performance of those traditional modulation and demodulation approaches without increasing transmit power and lowering spectrum efficiency. This thesis studies the application of powerful Particle Filtering methods to the problems associated with the interference cancellation, equalization, demodulation, and decoding of the signals over communication channel. In this thesis, theoretic models of using particle filtering approaches in digital communications are investigated, and several specific algorithms and schemes are considered as applications of the theoretic models. First, the application of particle filtering in delayed decision feed-back sequence estimation equalization is addressed. The particle filtering approach is then introduced to an efficient particle filtering receiver for inter-carrier interference cancellation and demodulation of M-ary modulated signals in OFDM/OFDMA system under time-variant Rayleigh fading channels. Subsequently, an efficient sequential Monte Carlo (SMC) demodulation approach for Polynomial Phase Modulation (PPM) is discussed. The interference cancellation and demodulation algorithm for MIMO-PPM scenario is then derived. The analysis of performance and computational complexity for SMC particle filtering approach is also provided. Comprehensive simulation results confirm that the proposed sequential Monte Carlo particle filtering approaches have better performance than the conventional methods.
PH.D in Electrical Engineering, May 2013
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- Title
- EXPANDING FAITH-BASED ORGANIZATIONS’ ADAPTATION OF STREAMING TECHNOLOGY
- Creator
- Johnson Winston, Patty D.
- Date
- 2011-07-18, 2011-05
- Description
-
In the field of technical communication there exist few studies that specifically address faith-based organizations’ use of communication...
Show moreIn the field of technical communication there exist few studies that specifically address faith-based organizations’ use of communication technology. The purpose of this dissertation was to show how these organizations can expand their use of streaming technology by using principles and practices that are common in technical communication. This was addressed in three phases. First, a review of the relationship between religion and media was conducted. It revealed that faith-based organizations are early adaptors of communication technology. Communication technology is used to widely broadcast their organizational missions, tenets and goals. By accomplishing these tasks, faith-based organizations seek to educate and reinforce cultural norms, images, and belief systems among their adherents and attract new members. Second, an examination of theories and instructional practices found in technical communication was conducted. It was determined that adapting a learning-centered approach to instruction can be applied to a distance education model for faith-based education. Third, faith-based websites were analyzed to determine types and current uses of communication technology. It was established that most of the organizations that offer educational courses do not conduct them online, even if they already use streaming media for other purposes. The findings suggest that faith-based organizations’ use of streaming technology for educational purposes is an area of inquiry that should be further explored by technical communicators. Technical communication provides a rich array of disciplines from which to draw, such as Instructional Design, Information Architecture, and Usability.
Ph.D. in Technical Communication, May 2011
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- Title
- TECHNOLOGY INTEGRATION IN SCIENCE EDUCATION: A STUDY OF HOW TEACHERS USE MODERN LEARNING TECHNOLOGIES IN BIOLOGY CLASSROOMS
- Creator
- Gnanakkan, Dionysius Joseph
- Date
- 2017, 2017-07
- Description
-
This multiple case-study investigated how high school biology teachers used modern learning technologies (probes, interactive simulations and...
Show moreThis multiple case-study investigated how high school biology teachers used modern learning technologies (probes, interactive simulations and animations, animated videos) in their classrooms and why they used the learning technologies. Another objective of the study was to assess whether the use of learning technologies alleviated misconceptions in Biology documented by American Association for the Advancement of Science. The sample consisted of eight teachers: four rural public school teachers, two public selective enrollment school teachers, and two private school teachers. Each teacher was followed for two Units of instruction. Data collected included classroom observations, field notes, student assignments and tests, teacher interviews, and pre-and post-misconception assessments. Paired t-tests were done to analyze the pre-post test data at a significance level of 0.05 and the qualitative data was analyzed using the constant comparative method. Each case study was characterized and then a cross-case analyses was done to find common themes across the different cases. Teachers were found to use the learning technologies as a tool to supplement instruction to visualize abstract processes, collect data, and explore abstract concepts and processes. Teachers were found to situate learning, use scaffolding and questioning and make students work in collaborative groups. The genetics, photosynthesis, and evolution misconceptions were better alleviated than cellular respiration. Student work that was collected demonstrated a superficial understanding of the concepts under discussion even when they had misconceptions. The teachers used the learning technologies in their classrooms for a variety of reasons: visual illustrations, time-saving measure to collect data, best way to collect data, engaging and fun for students and the interactive nature of the visualization tools and models. The study’s findings had many implications for research, professional development, teacher education, teaching practice, administrators, and learning technology developers. More detailed research within similar school settings (public, charter, and private) is needed to verify the common findings across the different cases in this study. An implication is that learning technology integration could be modeled with instructional scaffolds and questioning and incorporating higher order thinking tasks. Learning technology developers should consider the collaborative learning groups while developing these technologies.
Ph.D. in Science Education, July 2017
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- Title
- FINITE ELEMENT ANALYSIS OF HIGH HEAT LOAD DEFORMATION AND MECHANICAL BENDING CORRECTION OF A BEAMLINE MIRROR FOR THE APS UPGRADE
- Creator
- Goldring, Nicholas
- Date
- 2017, 2017-07
- Description
-
The impending Advanced Photon Source Upgrade (APS-U) will introduce a hard x-ray source that is set to surpass the current APS in brightness...
Show moreThe impending Advanced Photon Source Upgrade (APS-U) will introduce a hard x-ray source that is set to surpass the current APS in brightness and coherence by two to three orders of magnitude. To achieve this, the storage ring light source will be equipped with a multi-bend achromat (MBA) lattice [1]. In order to fully exploit and preserve the integrity of new beams actualized by upgraded storage ring components, improved beamline optics must also be introduced. The design process of new optics for the APS-U and other fourth generation synchrotrons involves the challenge of accommodating unprecedented heat loads. This dissertation presents an ex-situ analysis of heat load deformation and the subsequent mechanical bending correction of a 400 mm long, grazing-incidence, H2O side-cooled, reflecting mirror subjected to x-ray beams produced by the APS-U undulator source. Bending correction is measured as the smallest rms slope error, σrms, that can be resolved over a given length of the heat deformed geometry due to mechanical bending. Values of σrms in the <0.1 µrad regime represent a given mirror length over which incident x-ray beams from modern sources can be reflected without significant loss of quality [2, 3]. This study assumes a perfectly flat mirror surface and does not account for finish errors or other contributions to σrms beyond the scope of thermal deformation and elastic bending. The methodology of this research includes finite element analysis (FEA) employed conjointly with an analytical solution for mechanical bending deflection by means of an end couple. Additionally, the study will focus on two beam power density profiles predicted by the APS-U which were created using the software SRCalc [4]. The profiles account for a 6 GeV electron beam with second moment widths of 0.058 and 0.011 mm in the x- and y- directions respectively; the electron beam is passed through a 4.8 m long, 28 mm period APS-U undulator which produces the x-ray beam incident at a 3 mrad grazing angle on the flat mirror surface for both cases. The first power density profile is the most extreme case created by the undulator at it’s closest gap with a critical energy of 3 keV (ky=2.459); the second profile is generated for the case in which the undulator is tuned to emit at 8 keV (ky=1.026). The 3 keV case is of particular interest as it represents one of the most intense peak heat loads predicted to be incident on first optics at the APS-U. The FEA results revealed that the deflection due to the 3 keV heat load yields a 10.9 µrad rms slope error over the full mirror length. The projected correction via the elastic bending of the substrate yields a 0.10 µrad σrms within the center longitudinal 300 mm. The FEA also predicts that the 8 keV heat load deflection can be corrected to a σrms of 0.11 µrad within the center 300 mm from 1.50 µrad over the entire length. Attempts to optimize the end couple to correct over the entire 400 mm mirror length were unable to resolve the heat load deflection rms slope error to within a < 0.1 µrad value for either case. However, if a larger corrected surface is required, a longer mirror can be implemented so as to absorb the heat load of a larger beam than necessary which can then be cut by an aperture to the desired size and energy range.
M.S. in Physics, July 2017
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- Title
- Graphical methods in reinforced concrete design
- Creator
- Klein, Samuel, Greifenhagen, E. O.
- Date
- 2009, 1909
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/graphicalmethods00klei
Thesis (B.S.)--Armour Institute of Technology