Search results
(4,261 - 4,280 of 10,083)
Pages
- Title
- Glycerol and spent lye clarification
- Creator
- Parrot, Raymond D.
- Date
- 2009, 1915
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/glycerolspentlye00parr
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaf 39
- Title
- Industrial illumination
- Creator
- Arenberg, Albert Lee
- Date
- 2009, 1917
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/industrialillumi00aren
Thesis (B.S.)--Armour Institute of Technology, 1917 B.S. in Electrical Engineering, 1917
- Title
- INACTIVATION OF MURINE NOROVIRUS AND MS2 COLIPHAGE DURING FREEZE-DRY DEHYDRATION OF CONTAMINATED STRAWBERRIES
- Creator
- Wang, Xueyan
- Date
- 2013, 2013-07
- Description
-
Human norovirus (HuNoV) is the major causative agent of foodborne acute gastroenteritis in the US and worldwide. A 2012 norovirus outbreak...
Show moreHuman norovirus (HuNoV) is the major causative agent of foodborne acute gastroenteritis in the US and worldwide. A 2012 norovirus outbreak that was associated with frozen strawberries has led to more than 11,000 illnesses in Germany. Freezedrying, a common process used to preserve berries, has been questioned for its effectiveness of norovirus inactivation. In our study, the survival of MS2 coliphage and murine norovirus-1 (MNV-1), surrogates of HuNoV, on inoculated strawberries were evaluated during a 24hr freeze-dry dehydration process with and without radiant heat. Fresh strawberries were 7 mm-thickness sliced, virus-inoculated, 1hr frozen, and 24hr freeze-dried. Freeze-drying of inoculated berries with the temperature ranging from 0 to 40°C was studied with continuous recording of the temperatures once every 20 min. Infectious MNV-1 was quantified using a Raw 264.7 cell culture plaque assay. The quantification of MS2 was conducted using a double agar plaque assay. The average recovery of MS2 coliphage from berry slices by an elution protocol developed in the study was 97% ± 27% based on the inoculum as 100%. Only 57% ± 11% of MNV was recovered from berry slices using the identical elution protocol. Approximately half of the recoverable population (either MS2 or MNV-1) became undetectable after 24hr cold storage, the final average recovery being 46% and 29% for MS2 and MNV-1 respectively. Radiant heat was found to accelerate the reduction of MS2 up to 2.56 logs reduction per sample in the process. The overall reduction of MS2 was about 3 logs as maximum after 24hr freeze-drying. Regression analysis illustrated a significant correlation between MS2 log reduction and radiant heat applied. The x regression formula suggested that an increase of one degree Celsius in radiant heat during the 24hr freeze-drying would increase the log reduction of MS2 on berries by 0.044 log. The reductions of MNV on berries after the 24hr freeze-drying ranged from 0.85 to 1.82 logs. Via ANOVA analysis, MNV reduction on berries with radiant heat ≥20°C was significantly greater than heating at 10°C or without heat (~0°C), p<0.05. The overall maximum reduction of MNV on berries after the 24hr-process, therefore, was >2 logs. Although radiant heat inactivated MNV during the freeze-drying process, the inactivation of MNV by heat was less efficient than that of MS2. These data may be helpful in designing processes to control viral contaminants during freeze-drying of virus-contaminated berries.
M.S. in Food Safety and Technology, July 2013
Show less
- Title
- Improvement of Sheridan road in Glencoe
- Creator
- Walther, Ralph A., Dawson, M., Sturtevant, R. W.
- Date
- 2009, 1909
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/improvementofshe00walt
Thesis (B.S.)--Armour Institute of Technology
- Title
- IMPLEMENTATION OF GENERAL-PURPOSE BENDERS DECOMPOSITION ALGORITHM IN MATLAB AND ITS APPLICATION TO POWER SYSTEM PLANNING
- Creator
- Shao, Hang
- Date
- 2013-04-29, 2013-05
- Description
-
For most huge systems, planning is a very important step to adapt them for future excepted changes. Planning could figure out most of...
Show moreFor most huge systems, planning is a very important step to adapt them for future excepted changes. Planning could figure out most of potential problems and help people to make long-term decisions to get more secure and profitable. But huge system-planning problems would cost long time and lots of effort, we need some mathematic methods to simplify and solve the problems. Luckily, there comes Benders Decomposition. Benders Decomposition is a popular technique in solving certain classes of difficult problems such as stochastic programming problems, and mixed-integer nonlinear programming problems [1][2]. Then some software is needed to model basic template of Benders Decomposition algorithm with and for most engineers, MATLAB is one of the most popular software, which could solve engineering problems by matrixes. So the resultant model is solved numerically by the application of Benders Decomposition algorithm, whose implementation and development were executed using the software MATLAB. Even though the codes are for general system-planning problems, most of examples in this paper were power systems. But it does not mean it could only solve specifically, examples of power systems are popular and typical in Bender Decomposition problem solving. This paper describes the process of programming, such as basic mathematic method studying, specific models making, common models building, codes simplifying and examples testing with. At the end of it, conclusion was made about the performing of the code.
M.S. in Electrical Engineering, December 2012
Show less
- Title
- Indirect illumination with nitrogen-filled lamps
- Creator
- Adamson, J. Priece, Borroughs, Walter L, Wright, Chester F
- Date
- 2009, 1915
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/indirectillumina00adam
Thesis (B.S.)--Armour Institute of Technology, 1915 B.S. in Electrical Engineering, 1915
- Title
- Impounding dam and filtration plant
- Creator
- Nelson, Chas. J, Tompkins, G. Dwight
- Date
- 2009, 1907
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/impoundingdamfil00nels
Thesis (B.S.)--Armour Institute of Technology, 1907 B.S. in Civil Engineering, 1907
- Title
- STIGMA AND MENTAL ILLNESS: THE ROLE OF STEREOTYPE THREAT ON PERFORMANCE OF COGNITIVE MEASURES
- Creator
- Hautamaki, Julie Bilyeu
- Date
- 2013, 2013-05
- Description
-
Deficits in cognitive functioning observed in people with schizophrenia are well-documented; however, social psychologists recognize that...
Show moreDeficits in cognitive functioning observed in people with schizophrenia are well-documented; however, social psychologists recognize that additional societal factors, such as stigma and discrimination, may further contribute to these observed deficits in functioning. This study investigated the role of stereotype threat on cognitive functioning of people with schizophrenia. This group encounters stigma in various realms such as employment, relationships and housing. The negative stereotypes regarding this population have been well-documented and studied. In the current study, 60 participants were randomized into a control or stereotype condition. The participants completed a series of cognitive tests and the Structured Clinical Interview for DSM-IV Axis I Disorders (SCID-I). Participants in the stereotype threat condition were primed with a statement and questions to induce stereotype threat. The order of test administration was part of the threat induction. Stereotype threat was not found to impact the performance of cognitive measures for this group. In-group identification, stigma endorsement, and anxiety levels did not predict performance on cognitive measures.
PH.D in Psychology, May 2013
Show less
- Title
- COMPARING LAGRANGIAN COHERENT STRUCTURES FROM ASSIMILATING OCEAN MODELS TO OCEAN COLOR IMAGES
- Creator
- Riley, Jordan
- Date
- 2012-01-04, 2012-12
- Description
-
Lagrangian coherent structures (LCS) have been used to study transport on the ocean surface. The material barrier and separatrix properties of...
Show moreLagrangian coherent structures (LCS) have been used to study transport on the ocean surface. The material barrier and separatrix properties of LCS provide means to compare data-assimilative ocean models. LCS obtained from these models are compared to ocean color images and satellite derived products such as chlorophyll concentration and sea surface temperature from the Moderate Resolution Imaging Spectroradiometer (MODIS) instrument aboard the Terra and Aqua satellites. The ability of the LCS to match the satellite images provides insight into the accuracy of the ocean models in capturing predominant ow structures. Two of the ocean model systems use the U.S. Navy Coastal Ocean Model (NCOM), and two model systems use the HYbrid Coordinate Ocean Model (HYCOM). Speci cally, the model systems are the Intra American Seas Nowcast/Forecast System (IASNFS), the NCOM American Seas, the HYCOM + NCODA Global 1/12 , and the HYCOM + NCODA Gulf of Mexico 1/25 .
M.S. in Mechanical and Aerospace Engineering, December 2012
Show less
- Title
- HYDROGEN BOND CATALYZED EPOXIDATION AND DIHYDROXYLATION OF UNACTIVATED ALKENES
- Creator
- Kang, Lili
- Date
- 2011-12, 2011-12
- Description
-
Asymmetric epoxidation and dihydroxylation have been studied over decades using transition metals and chiral ligands. This research focused on...
Show moreAsymmetric epoxidation and dihydroxylation have been studied over decades using transition metals and chiral ligands. This research focused on metal free, hydrogen-bonding activation of the oxidant, such as hydrogen peroxide. In order to activate hydrogen peroxide, different types of catalysts, including BINOLs, calixarenes and carboxylic acids were synthesized, characterized and tested. The activity tests showed that carboxylic acids were able to activate hydrogen peroxide and alkyl hydroperoxides to give epoxides and diols as products. Various carboxylic acids, such as commercial available achiral and chiral carboxylic acids, dicarboxylic acids, as well as synthesized trans- and cis-dicarboxylic acid, were tested with different substrates to maximize the yield and enantioselectivity. A current reaction system uses 10 mol % catalyst, no solvent and provides the epoxide with 70% yield and 60% ee over 24 hours.
M.S. in Chemisty, December 2011
Show less
- Title
- DEVELOPMENT OF A MOBILE AD-HOC NETWORK USING WI-FI DIRECT OVER ANDROID PLATFORM
- Creator
- Liu, Kecheng
- Date
- 2015, 2015-12
- Description
-
The proliferation of smart phones enables ubiquitous Mobile Ad-hoc Networks (MANETs) where mobile devices communicate with peers over a...
Show moreThe proliferation of smart phones enables ubiquitous Mobile Ad-hoc Networks (MANETs) where mobile devices communicate with peers over a wireless channel in an ad hoc mode. In this paper, we introduce a novel method to achieve multi-hop communication among open-source, non-rooted Android devices using Wi-Fi Direct Technology (also known as Wi-Fi Peer-to-Peer (P2P» . We then implement an MANET with proactive routing using device s MAC addresses by conducting experim ents using off-the-shelf smartphones.
M.S. in Electrical Engineering, December 2015
Show less
- Title
- Lightning arresters and schemes for testing
- Creator
- Morey, C. R., Oehne, T. C. Jr
- Date
- 2009, 1908
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/lightningarreste00more
Thesis (B.S.)--Armour Institute of Technology
- Title
- A CONCEPTUAL ENERGY DESIGN FOR O’HARE INTERNATIONAL AIRPORT USING WIND AND BUILDING INTEGRATED PHOTOVOLTAIC SYSTEMS
- Creator
- Gomez Soriano, Maria
- Date
- 2014, 2014-12
- Description
-
Commercial buildings account for approximately 18% of the total energy use in the United States, although only 7% of this consumption is...
Show moreCommercial buildings account for approximately 18% of the total energy use in the United States, although only 7% of this consumption is currently supplied by renewable energy sources, including hydropower, biomass, geothermal, wind, and solar heat and photovoltaics. This is a low percentage and it is imperative to explore potentials for using a combination of renewable energy systems to increase this percentage, particularly for large establishments with large land areas and existing facilities that can support large amounts of renewable energy technologies, such as airports. O’Hare International Airport (ORD), located in Chicago (Illinois), has been selected for this research, with the main purpose of supplying the maximum possible amount of the airport energy demand by a proposed wind and solar hybrid system. The first part of this research includes a wind energy system design performed using wind speed data at ORD locations and determining a suitable number and type of turbines loacted within the airport premises. Special considerations are made for for height, turbine locations, and prevailing wind directions. The second part of the study involves design of solar photovoltaic panel arrays both for existing terminals as well as for a proposed new terminal. The design of the arrays includes considerations for optimal energy production with varying installation angles as well as the number of sunny days useful for sun energy harvesting. Finally, the total electricity output from the hybrid system is estimated and compared with the total and monthly electricity demand at ORD. Results show that a considerable percentage of the electricity demand at ORD can be obtained through the wind and solar hybrid system. Specifically, if the airport authority decides on a new terminal, the integration of PV panels with the new terminal structure can be optimized such that the pecentage of total electricty demand at ORD could be met by more than 50% on-site renewable energy sources. An analysis of potential return in investment reveals that economically such a design is viable and can result in sizeable annual savings over a 20-year investment period.
M.S. in Civil, Architectural and Environmental Engineering, December 2014
Show less
- Title
- INDUCTION MOTOR MODELING FOR ELECTROMECHANICAL DYNAMIC SIMULATION AND ELECTROMAGNETIC TRANSIENT SIMULATION
- Creator
- Aserkar, Chandrahas
- Date
- 2011-11-21, 2011-12
- Description
-
The initial part of this research work focuses on distribution power flow for agent based distribution systems. Power flow analysis is an...
Show moreThe initial part of this research work focuses on distribution power flow for agent based distribution systems. Power flow analysis is an essential tool for power system planning and operation. Traditionally, most distribution systems are radial or weakly meshed types. Faced with the power markets of today, increasing requirements for reliability and ongoing distributed generation have meant that the structure of the distribution systems has become more complex. Also, with the advent of smart- grid technology, distribution automation and micro-grids, the distribution systems are focusing towards distributed control with the use of smart switches via agents. Thus the need for power flow analysis in such systems becomes more important than before. The forward-backward sweep method is a very popular method for distribution power-flow analysis. But, the traditional forward-backward sweep method focuses on the load flow solution based on the bus-injection to branch-current (BIBC) matrix, which is calculated considering the network topology. For distribution systems focus- ing on distributed control, the complete distribution network topology is unknown to any one agent and hence the complete BIBC matrix is not formed. Rather, the property of these agents to communicate with each other is exploited to obtain the power flow solution. Here, we focus on altering the network topology based algo- rithm for forward-backward sweep method so as to make it suitable for agent based distribution systems. The later part of this research work focuses on development of induction motor load models for transient dynamic stability simulators (TS) and electromagnetic tran- sient simulators (EMT), to study the voltage stability of power systems. A Transient Stability simulator runs at a larger time step and is used to study relatively slower dynamics in the system. On the other hand, an Electromagnetic Transient simulator uses a smaller time step to capture the fast dynamics in the system. A combined TS-EMT simulator attempts to model the bulk of the system as a slowly varying dynamic system and a small portion of the system for which the fast dynamics are to be studied, with an electromagnetic transient model. Load modeling is a very important aspect for studying power system stability. Power system stability is the property of a power system that insures the system remains in electromechanical equilibrium throughout any normal and abnormal oper- ating conditions. It is thus defined as the ability of designated synchronous machines in the system to remain in synchronism with one another following disturbance at various locations in the system. It also indicates the ability of induction motors in the system to maintain electrical torque to carry the load following these disturbances. This research work provides a detailed modeling of the induction motor for electrome- chanical as well as electromagnetic transient simulations and uses them to study the effects of composite load models on power system voltage stability.
M.S. in Electrical Engineering, December 2011
Show less
- Title
- SELF-ESTEEM AS A MEDIATOR OF ASSOCIATIONS BETWEEN AFFECT AND BODY IMAGE IN A SAMPLE OF MALE AND FEMALE UNDERGRADUATES
- Creator
- Hansen, Meghan
- Date
- 2013, 2013-12
- Description
-
Body image is a multidimensional construct that encompasses how individuals perceive their body. One frequently studied component of body...
Show moreBody image is a multidimensional construct that encompasses how individuals perceive their body. One frequently studied component of body image is body dissatisfaction. Body dissatisfaction has been associated with numerous negative outcomes including increased negative affect, increased maladaptive dieting behaviors and increased eating pathology. Psychological factors, including depression, anxiety, well-being, and self-esteem have been implicated in body dissatisfaction ; however, little is known about associations between these psychological factors and the larger construct of body image. This study examined associations among depression, social anxiety, well-being, self-esteem and body image in a diverse sample of undergraduate men and women. Correlation and regression analyses were conducted to 1) examine bivariate associations between affect and body image and 2) self-esteem as a moderator or mediator of these associations. Results demonstrated significant correlations between affect, body image, and self-esteem. Additionally, self-esteem mediated the relationship between affect and various components of body image, and these results varied based on gender. Findings have important implications for treatment and prevention efforts.
M.S. in Psychology, December 2013
Show less
- Title
- THERAPEUTIC MISCONCEPTION AMONG PARTICIPANTS OF THE DOBELLE VISION IMPLANT PROJECT
- Creator
- Nitsch, Kristian P.
- Date
- 2015, 2015-05
- Description
-
Therapeutic misconception, as first described by Appelbaum, Roth, and Lidz (1982) is said to occur when a participant who is engaged in...
Show moreTherapeutic misconception, as first described by Appelbaum, Roth, and Lidz (1982) is said to occur when a participant who is engaged in research, erroneously conflates the purpose and goals of a given research project with those of therapeutic treatment and personal care. Therapeutic misconception is considered ethically intolerable in research as its presence is thought to undermine the process of voluntary informed consent (Appelbaum, Roth, Lidz, Benson, and Winslade, 1987). Extensive literature suggests that therapeutic misconception is a common phenomenon which occurs within a variety of research domains, and may be present in approximately 62% of research participants (Appelbaum, Lidz, & Grisso, 2004). Despite this alarming prevalence, the possibility of therapeutic misconception in neural interface research, especially projects exploring artificial vision restoration, has received little attention. Vision prosthetic trials may be particularly susceptible to engendering therapeutic misconceptions among participants, due to the intense desire to restore visual functioning, the complexity of this research context, and the dearth of information available concerning vision prosthetic devices. As a mounting number of visual neural prosthetic projects advance and reach the threshold of human-subjects research, assessing for therapeutic misconception will become increasingly essential to ensure that participants fully comprehend the nature of their involvement. The present study, which represents the first known investigation into the potential of therapeutic misconception in artificial vision research, employs semi-structured interviews and qualitative deductive content data analyses to explore the possibility that therapeutic misconception was evident, and operating, among participants of the Dobelle Vision Implant Project.
M.S. in Psychology, May 2015
Show less
- Title
- The hydrogenation of coal tar and coal tar oils
- Creator
- Melichar, Robert S.
- Date
- 2009, 1919
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/hydrogenationofc00meli
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaf 36
- Title
- Heat treatment of high speed steels
- Creator
- Miller, Philip F, Bornstein, Hymen
- Date
- 2009, 1911
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/heattreatmentofh00mill
Thesis (B.S.)--Armour Institute of Technology, 1911 B.S. in Chemical Engineering, 1911
- Title
- RUMINATION AS A PROCESS THROUGH WHICH COGNITIVE VULNERABILITIES ARE RELATED TO NEGATIVE AFFECT ON BOTH THE TRAIT- AND STATE-LEVEL
- Creator
- Hutman, Paul J.
- Date
- 2017, 2017-07
- Description
-
The purpose of this paper is twofold. First, it reviewed the empirical and theoretical literature on rumination as well as three cognitive...
Show moreThe purpose of this paper is twofold. First, it reviewed the empirical and theoretical literature on rumination as well as three cognitive vulnerabilities (intolerance of uncertainty, positive meta-cognitive beliefs about rumination, and thought suppression) associated with negative emotionality. Second, this paper tested trait- and state-level hypotheses that posit (a) rumination is a mediator that connects the three cognitive vulnerabilities to general negative affect and (b) each cognitive vulnerability has a unique relationship to rumination. Rumination is a transdiagnostic and passive, repetitive thought process known to incite and perpetuate a number of negative emotional states and hinder instrumental behavior (e.g., treatment adherence and social support). Although mainly studied as a trait-like tendency, research studying the act of ruminating found it to be a ubiquitous process, experienced as self-focused, unpleasant, and uncontrollable. Ruminating has a number of precipitants (cognitive avoidance, experiencing acute stress, and receiving negative feedback), occurs more often in those experiencing depression, and is associated with inciting or exacerbating negative emotional states (regardless of one’s diagnostic status). To test hypotheses, data was gathered from 77 adults, half reporting a mental health diagnosis, who reported on the intensity with which they experience the cognitive vulnerabilities, rumination, and negative affect on both the trait- and state-level. Findings support rumination as a process through which cognitive vulnerabilities are connected to negative emotionality. Findings indicate all cognitive vulnerabilities were uniquely predictive of rumination when measured as a trait, but only thought suppression uniquely predicted the act of ruminating. Emphasis was placed on discussion of the theoretical and clinical implications of these findings and potential directions for future research.
Ph.D. in Psychology, July 2017
Show less
- Title
- Hydro-electric development on the Snake River at Oxen Bend, Oregon
- Creator
- Baer, W. J., Rosenthal, H., Moyses, H., Godfrey, F. O.
- Date
- 2009, 1910
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/hydroelectricdev00baer
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaf 1