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Title: Exploring the role of perceived trustworthiness on leader humility's effectiveness
Creator: Pickett, Meghan L.
Date: 2024
Description: Over the last decade, several studies have uncovered the value of leader humility; however, these findings fail to consider the contextual...
Show moreOver the last decade, several studies have uncovered the value of leader humility; however, these findings fail to consider the contextual factors that may alter when and how humility plays a role. The current study looks to bridge this gap, by exploring how the effectiveness of perceived leader humility on follower outcomes (i.e., state learning goal orientation, feedback seeking behaviors, and employee engagement) is contingent upon follower perceptions of the leader’s trustworthiness. Data was collected from 160 leader-follower dyads across a variety of industries, using a cross-sectional design. Results from the study reinforced earlier findings that leader humility is often associated with positive follower outcomes such as seeking more feedback and reporting a higher learning goal orientation; however, these results were contingent upon how trustworthy they perceived the leader to be. Additionally, the study found evidence that perceptions of leader trustworthiness were related to group-based differences (e.g., age, gender). Together, these findings serve as a reminder that studying leader behaviors in isolation often risks simplifying the complex reality most leader’s face when trying to implement leader behaviors and skills.
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Title: Evaluation of the Native Microbiota and Comparative Analysis of a Known Cronobacter Sakazakii and a Newly Isolated Bacillus Cereus Strain in Powdered Infant Formula
Creator: Patil, Sonali Prashant
Date: 2024
Description: There have been numerous reports of Powdered Infant Formula (PIF) recalls and outbreaks due to the absence of a kill step in the post...
Show moreThere have been numerous reports of Powdered Infant Formula (PIF) recalls and outbreaks due to the absence of a kill step in the post-pasteurization processing, improper handling pre and post processing and/or reconstitution, and lack of effective sanitization and cleaning of the food contact surfaces in the manufacturing facilities. The objectives of this present study were to 1) survey and identify background microflora in commercial PIF products through microbiological analysis, 16S rRNA, and whole genome sequencing (WGS); 2) compare the survival rate of a known Cronobacter sakazakii and a newly isolated Bacillus cereus DFPST-SP1 in PIF under a humidity level of 33 ± 3% over a period of 28 d; 3) examine the relative resistance of these two strains to thermal treatments at temperatures 40, 70, and 100 °C followed by storage at room temperature (RT) for 30 min; and 4) evaluate the bactericidal effect of 70% ethanol on the two artificially deposited bacterial strains on stainless steel (SS) and plastic coupons. Three biological trials were conducted for each study. To determine whether the increase, decrease, or difference in the bacterial populations and other parameters like water activity (aw) was statistically significant, a T-test was performed (p ≤ 0.05 was considered significant). Results of 16S rRNA sequencing revealed the presence of certain bacterial species in PIF, such as Lactococcus lactis, B. cereus, Listeria monocytogenes, Staphylococcus aureus, Salmonella enterica, etc. distributed across a relative abundance of >25%, <25%, and ≤3%. After the enrichment and isolation as per Bacteriological Analytical Manual (BAM), C. sakazakii or S. enterica were not detected, while colonies exhibiting a blue-green appearance resembling Listeria spp. and certain Bacillus spp. were subjected to WGS for species-level identification. The assembly_1 from formulation 1 was confirmed as B. cereus sequence type 2255 and was renamed as B. cereus DFPST-SP1 in the contribution of this thesis work. The storage study conducted on PIF inoculated with C. sakazakii and B. cereus DFPST-SP1 at 33% RH showed that there was 0.25-0.27 log CFU/g reduction towards the end of 28 d, but no significant difference was observed between the two strains. The thermal challenge study revealed that the newly isolated B. cereus strain and C. sakazakii used in this study were highly thermotolerant. Based on the sanitizer challenge study, 70% ethanol was significantly more effective in reducing populations of C. sakazakii as compared to B. cereus. Moreover, higher log reductions of C. sakazakii 587 populations on stainless steel coupons compared to plastic coupons were observed, indicating that bacteria adhere more tightly to plastic surfaces than stainless steel (SS). Overall, the findings of this study shed new light on bolstering the safety standards of PIF and highlight the need for improved cleaning and sanitization procedures within manufacturing facilities in order to ensure the safety of reconstituted PIF, thereby enhancing public health, particularly infants and neonates.
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Title: Characterization of Novel Concrete Formulations: High-Volume Fly Ash for Precast Industry Use and Non-Proprietary UHPC
Creator: Ordillas, Kurt Andrew
Date: 2024
Description: The use of high-volume fly ash concretes can be challenging for high-early strength applications, such as in precast construction, largely due...
Show moreThe use of high-volume fly ash concretes can be challenging for high-early strength applications, such as in precast construction, largely due to potential delays in strength gain resulting from relatively lower heats of hydration of the underlying binder formulations. Considering that the use of higher levels of available fresh or landfilled fly ash as a replacement for traditional ordinary Portland cement (OPC) could result in more sustainable mix designs, a framework to develop novel, high-volume fly ash mixes with optimized dosages of commercial grade gypsum and accelerating admixtures to enhance early-age strength performance. Early-age mechanical properties such as compressive strength, modulus of rupture, and modulus of elasticity were evaluated starting within 24 hours of specimen preparation. Experimental test results were then characterized and subsequently analyzed relative to current design provisions to highlight the best performing trial mixes (with respect to the early-age strength target) and cases where current design provisions are either unconservative or overly-conservative with respect to the test data. Additionally, thermal properties of concrete produced with fly ash were tested with two different curing environments, along with using code equations to determine if high volume fly ash provides a higher thermal resistance compared to OPC concrete. Wrapping up cementitious replacement with non-proprietary ultra high-performance concrete (UHPC) for transportation structures. Then reproducing mixtures to ensure target compressive strength values could be reached. Followed by increasing batch size to a larger quantity using a large mixer to create full-size specimens.
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Title: Ultrasound Image Guided Robot Arm for Targeted Delivery of Therapeutic Drugs and MicroRNA for Cancer Therapy
Creator: Nagarajan Parimala, Abishek
Date: 2024
Description: Molecular imaging has revolutionized medical diagnostics by providing detailed insights into biological processes at the molecular level...
Show moreMolecular imaging has revolutionized medical diagnostics by providing detailed insights into biological processes at the molecular level within the living subject. Ultrasound Molecular Imaging (USMI) has emerged as a promising diagnostic imaging modality by utilizing targeted contrast agents to unveil crucial molecular information, including vascular biomarkers associated with cancer and other diseases. Despite its potential, the transition of Ultrasound Contrast Agents (UCA) from preclinical evaluation to FDA-approved clinical use faces challenges due to the short in vivo half-life of Micro-Bubbles (MBs), necessitating repeated administrations for comprehensive assessments. Moreover, conventional ultrasound imaging methods suffer from limited scanning areas and single-target focus, leading to low throughput in preclinical evaluations.This thesis addresses these challenges by proposing a robot-assisted whole-body scanning pipeline for preclinical evaluations in Ultrasound Molecular Imaging. By integrating a robotic arm into the imaging setup, this approach enhances scanning flexibility and precision, enabling scans across the entire body of a mouse. This extension of the imaging time window allows for comprehensive assessments without the need for repeated contrast agent administrations. Additionally, the ability to simultaneously scan multiple targets within the same session significantly increases the throughput of preclinical assessments, thereby improving the efficiency and reliability of Ultrasound Molecular Imaging in clinical translation.
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Title: Interiors 1 [belly of tube intersecting ceiling]
Creator: Barnes, Richard, 1953-
Date: 2003
Description: Photograph of the McCormick Tribune Campus Center, Illinois Institute of Technology, showing the intersection of the Exelon tube with the...
Show morePhotograph of the McCormick Tribune Campus Center, Illinois Institute of Technology, showing the intersection of the Exelon tube with the ceiling of the interior of the building. The concrete and stainless steel tube encloses a 530-foot stretch of the Chicago Transit Authority's elevated Green Line commuter rail ("L") tracks. Photograph made available via Illinois Tech's institutional repository with the permission of Richard Barnes.
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Collection: McCormick Tribune Campus Center photographs, 2003

Title: Tube 6 [with El tracks]
Creator: Barnes, Richard, 1953-
Date: 2003
Description: Photograph of the McCormick Tribune Campus Center, Illinois Institute of Technology, showing State Street Village (now Jeanne and John Rowe...
Show morePhotograph of the McCormick Tribune Campus Center, Illinois Institute of Technology, showing State Street Village (now Jeanne and John Rowe Village) in the foreground, the Exelon tube and the Chicago skyline in the background. The concrete and stainless steel tube encloses a 530-foot stretch of the Chicago Transit Authority's elevated Green Line commuter rail ("L") tracks. Photograph made available via Illinois Tech's institutional repository with the permission of Richard Barnes.
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Collection: McCormick Tribune Campus Center photographs, 2003

Title: Founders' Wall 2 [icons]
Creator: Barnes, Richard, 1953-
Date: 2003
Description: Photographic detail of the Founders' Wall at McCormick Tribune Campus Center, Illinois Institute of Technology. The photograph shows the...
Show morePhotographic detail of the Founders' Wall at McCormick Tribune Campus Center, Illinois Institute of Technology. The photograph shows the pictographic icon system designed for the building by graphic design firm 2x4. On the Founders' Wall, the icons are used to create portraits of Frank Gunsaulus, Allen Lewis, Robert Pritzker, and Ludwig Mies van der Rohe. Photograph made available via Illinois Tech's institutional repository with the permission of Richard Barnes.
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Collection: McCormick Tribune Campus Center photographs, 2003

Title: Founders' Wall 3 - [faces of (l-r): Frank Gunsaulus, Allen Lewis, Robert Pritzker, Ludwig Mies van der Rohe]
Creator: Barnes, Richard, 1953-
Date: 2003
Description: Photograph of the Founders' Wall at McCormick Tribune Campus Center, Illinois Institute of Technology. The photograph shows the pictographic...
Show morePhotograph of the Founders' Wall at McCormick Tribune Campus Center, Illinois Institute of Technology. The photograph shows the pictographic icon system designed for the building by graphic design firm 2x4. On the Founders' Wall, the icons are used to create portraits of Frank Gunsaulus, Allen Lewis, Robert Pritzker, and Ludwig Mies van der Rohe. Photograph made available via Illinois Tech's institutional repository with the permission of Richard Barnes.
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Collection: McCormick Tribune Campus Center photographs, 2003

Title: Rem Mies [Commons seen from inside MTCC]
Creator: Barnes, Richard, 1953-
Date: 2003
Description: Photograph of the Commons Building visible through the windows of the McCormick Tribune Campus Center. The MTCC was connected to Mies van der...
Show morePhotograph of the Commons Building visible through the windows of the McCormick Tribune Campus Center. The MTCC was connected to Mies van der Rohe's Commons Building to provide an interior passageway between the buildings. Photograph made available via Illinois Tech's institutional repository with the permission of Richard Barnes.
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Collection: McCormick Tribune Campus Center photographs, 2003

Title: Mies Door 1
Creator: Barnes, Richard, 1953-
Date: 2003
Description: Photograph of the exterior of the McCormick Tribune Campus Center, Illinois Institute of Technology. The photograph depicts a portrait of...
Show morePhotograph of the exterior of the McCormick Tribune Campus Center, Illinois Institute of Technology. The photograph depicts a portrait of Ludwig Mies van der Rohe created using the pictographic icon system designed for the building by graphic design firm 2x4. Photograph made available via Illinois Tech's institutional repository with the permission of Richard Barnes.
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Collection: McCormick Tribune Campus Center photographs, 2003

Title: Hallway [northeast corridor]
Creator: Barnes, Richard, 1953-
Date: 2003
Description: Photograph of the northeast corridor of the McCormick Tribune Campus Center, Illinois Institute of Technology. The photograph depicts the use...
Show morePhotograph of the northeast corridor of the McCormick Tribune Campus Center, Illinois Institute of Technology. The photograph depicts the use of conventional glass and orange Panelite, a translucent, honeycomb-patterned, composite paneling material. Photograph made available via Illinois Tech's institutional repository with the permission of Richard Barnes.
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Collection: McCormick Tribune Campus Center photographs, 2003

Title: Interiors 2 [integrated ramp/staircase]
Creator: Barnes, Richard, 1953-
Date: 2003
Description: Photograph of the McCormick Tribune Campus Center, Illinois Institute of Technology, showing integrated ramp and staircase leading from the...
Show morePhotograph of the McCormick Tribune Campus Center, Illinois Institute of Technology, showing integrated ramp and staircase leading from the main level to the food court area below. Photograph made available via Illinois Tech's institutional repository with the permission of Richard Barnes.
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Collection: McCormick Tribune Campus Center photographs, 2003

Title: Interiors 3 [food court looking east]
Creator: Barnes, Richard, 1953-
Date: 2003
Description: Photograph of the McCormick Tribune Campus Center, Illinois Institute of Technology, showing cafeteria/food court on the building's lower...
Show morePhotograph of the McCormick Tribune Campus Center, Illinois Institute of Technology, showing cafeteria/food court on the building's lower level. Photograph made available via Illinois Tech's institutional repository with the permission of Richard Barnes.
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Collection: McCormick Tribune Campus Center photographs, 2003

Title: Computer Hall
Creator: Barnes, Richard, 1953-
Date: 2003
Description: Photograph of the McCormick Tribune Campus Center, Illinois Institute of Technology, showing the recessed central corridor that initially...
Show morePhotograph of the McCormick Tribune Campus Center, Illinois Institute of Technology, showing the recessed central corridor that initially housed the building's "broadband cafe." Photograph made available via Illinois Tech's institutional repository with the permission of Richard Barnes.
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Collection: McCormick Tribune Campus Center photographs, 2003

Title: Tube 5 [El train speeding through tube]
Creator: Barnes, Richard, 1953-
Date: 2003
Description: Photograph of the McCormick Tribune Campus Center, Illinois Institute of Technology, showing a train moving through the Exelon tube. The...
Show morePhotograph of the McCormick Tribune Campus Center, Illinois Institute of Technology, showing a train moving through the Exelon tube. The concrete and stainless steel tube encloses a 530-foot stretch of the Chicago Transit Authority's elevated Green Line commuter rail ("L") tracks. Photograph made available via Illinois Tech's institutional repository with the permission of Richard Barnes.
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Collection: McCormick Tribune Campus Center photographs, 2003

Title: Tube 7 [El tracks' supporting structure]
Creator: Barnes, Richard, 1953-
Date: 2003
Description: Photograph of the McCormick Tribune Campus Center, Illinois Institute of Technology, showing the Exelon tube and the Green Line tracks from...
Show morePhotograph of the McCormick Tribune Campus Center, Illinois Institute of Technology, showing the Exelon tube and the Green Line tracks from below. The concrete and stainless steel tube encloses a 530-foot stretch of the Chicago Transit Authority's elevated Green Line commuter rail ("L") tracks. Photograph made available via Illinois Tech's institutional repository with the permission of Richard Barnes.
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Collection: McCormick Tribune Campus Center photographs, 2003

Title: Tube 8 [close-up through tube]
Creator: Barnes, Richard, 1953-
Date: 2003
Description: Photograph of the McCormick Tribune Campus Center, Illinois Institute of Technology, showing a the Green Line tracks running through the...
Show morePhotograph of the McCormick Tribune Campus Center, Illinois Institute of Technology, showing a the Green Line tracks running through the Exelon tube. The concrete and stainless steel tube encloses a 530-foot stretch of the Chicago Transit Authority's elevated Green Line commuter rail ("L") tracks. Photograph made available via Illinois Tech's institutional repository with the permission of Richard Barnes.
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Collection: McCormick Tribune Campus Center photographs, 2003

Title: Tube 2 - Chicago skyline in background
Creator: Barnes, Richard, 1953-
Date: 2003
Description: Photograph of the McCormick Tribune Campus Center, Illinois Institute of Technology, showing a train moving through the Exelon tube and the...
Show morePhotograph of the McCormick Tribune Campus Center, Illinois Institute of Technology, showing a train moving through the Exelon tube and the Chicago skyline in the background. The concrete and stainless steel tube encloses a 530-foot stretch of the Chicago Transit Authority's elevated Green Line commuter rail ("L") tracks. Photograph made available via Illinois Tech's institutional repository with the permission of Richard Barnes.
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Collection: McCormick Tribune Campus Center photographs, 2003

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