Search results

Title: Organo-Functionalized Polyoxometalates
Creator: Alsaleh, Musaed Riyadh A
Date: 2023
Description: Polyoxometalates (POM) or transition metal oxide clusters are a sub-class of metal oxide-based materials of contemporary interest. POMs are...
Show morePolyoxometalates (POM) or transition metal oxide clusters are a sub-class of metal oxide-based materials of contemporary interest. POMs are molecular systems which contain highly symmetrical structures and are characteristics of group 5 and 6 metals, especially V, Mo, and W. Typical POM clusters have nuclearities ranging from 6 to 18 metal centers and are purely inorganic in their compositions. POMs can act as multielectron redox systems, while retaining their robust oxometallic framework structure. POMs have been receiving increasing attention, in part due to their potential as redox active materials for applications in various areas and their suitability as attractive molecular building units for making new functional materials of desirable properties and functions.In recent years, there has been a growing interest in the functionalization of polyoxometalates with organic moieties to synthesize organo-functionalized POMs. During the course of the work described in this thesis, we explored the synthesis of organo-functionalized polyoxometalates with special interest in polyoxovanadates incorporating heterometal center(s) in addition to vanadium in the structure. The focus of the work was on low nuclearity POMs. The thesis describes the synthesis and full characterization of a new organo-functionalized polyoxovanadate cluster - [(n-C4H9)4N]2[V6O13{(OCH2)3C (CH2CH3)}2]. The cluster compound has been characterized by a series of analytical techniques- FT-IR, Thermo Gravimetric Analysis, Bond Valence Sum calculations and complete single X-ray diffraction structure analysis. The hexavanadate cluster features {V6O19} oxometallate core composed of six edge sharing {VO6} octahedra defined by five bridging oxygen atoms and a terminal {V=Ot} oxo group. The {V6O19} oxometallic core of the cluster adopts the Lindqvist structure incorporating two 1,1,1-tris(hydroxymethyl)propane organic ligands. Six of the oxygens in the {V6O19} core come from the three alkoxy groups from two organic ligands. To the best of our knowledge, this organo-functionalized POM cluster has not been reported in the literature previously.
Show less

Title: Child Temperament, Attachment, and Loneliness: The Mediating Effects of Social Competence
Creator: Evans, Lindsey M
Date: 2021
Description: Chronic loneliness is a risk factor associated with adverse psychological, physical, and academic outcomes. Converging evidence suggests that...
Show moreChronic loneliness is a risk factor associated with adverse psychological, physical, and academic outcomes. Converging evidence suggests that young children experience and can reliably report on their own loneliness. Due to the significant negative sequalae associated with childhood loneliness, it is critically important to examine risk factors for child loneliness. The aims of this study were two-fold: (a) to examine if temperament (i.e., negative affect, effortful control, and inhibitory control) and attachment security assessed at 4 years of age predict loneliness at age 6; and (b) to determine if social competence at age 5 mediates the relation between temperament and attachment security at age 4 and loneliness at age 6. Participants included a diverse sample of 796 4-year old children, about half of whom were male. At age 4, temperament was assessed with the Rothbart Child Behavior Questionnaire and three inhibitory control tasks, and attachment security was assessed with the Attachment Q-Sort. At age 5, the Social Skills Rating Scale was used to assess social competence, and, at age 6, loneliness was assessed with the Loneliness and Social Dissatisfaction Questionnaire. Results of hierarchical regression analyses indicated that lower levels of effortful control and inhibitory control at age 4 significantly predicted higher levels of loneliness at age 6. Also, lower levels of negative affect and higher levels of effortful control and attachment security at age 4 significantly predicted higher levels of social competence at age 5. However, social competence at age 5 did not predict loneliness at age 6. There was no evidence that social competence at age 5 mediated the relation between age 4 temperament, attachment security and age 6 loneliness. These findings reveal that early self-regulation is associated with later child-reported loneliness and that intervention for children who struggle with cognitive regulation may be effective in decreasing risk for later loneliness.
Show less

Title: ARE SUPPORTIVE FOSTER CAREGIVERS ASSOCIATED WITH IMPROVED FOSTER CARE ALUMNI OUTCOMES? A LONGITUDINAL EXAMINATION OF THE EFFECT OF SUPPORTIVE FOSTER CAREGIVERS ON MENTAL HEALTH OUTCOMES IN A NATIONALLY REPRESENTATIVE SAMPLE
Creator: Dunn, Megan Reeves
Date: 2021
Description: Foster youth are a vulnerable population associated with poor health outcomes, but relatively little research has identified factors that may...
Show moreFoster youth are a vulnerable population associated with poor health outcomes, but relatively little research has identified factors that may mitigate adverse outcomes for these youth. The present study augments previous research by utilizing a nationally representative, longitudinal study (The National Longitudinal Study of Adolescent to Adult Health or Add Health) to investigate whether foster youth in the United States face significantly different mental and behavioral health outcomes compared with same-age peers, and second, whether presence of a supportive foster caregiver may predict better mental and behavioral health outcomes in the foster youth subsample. Using data from Waves III and IV of the Add Health study (N = 12,288 participants, of which n = 282 were foster youth), analyses examined whether foster status and higher caregiver support was related to rates of depression symptoms, suicidal ideation, marijuana use, and alcohol use. Surprisingly, there were few differences between those with and without a foster history; higher frequency of marijuana use among foster youth was the only significant difference. However, analyses in the foster youth subsample indicated that the presence of a supportive caregiver was associated with lower rates of depression symptoms and lower endorsement of suicidal ideation, demonstrating caregiver support as a possible protective factor for foster youth. Future research must continue to explore potential benefits of caregiver support, as it may inform policy that can improve long-term outcomes for foster youth.
Show less

Title: Development of data assimilation for analysis of ion drifts during geomagnetic storms
Creator: Hu, Jiahui
Date: 2024
Description: The primary objective of this dissertation is to gain insight into geomagnetic storm effects at mid-latitudes induced by solar activity....
Show moreThe primary objective of this dissertation is to gain insight into geomagnetic storm effects at mid-latitudes induced by solar activity. Geomagnetic storms affect our everyday lives because they give rise to transient signal loss, data transmission errors, negatively impacting users of satellite navigation systems. The Nighttime Localized Ionospheric Enhancement (NILE) is a localized plasma enhancement that because it is not well understood, drives the design of satellite-based augmentationsystems. To better secure operation of technological infrastructure, it is essential to build a comprehensive understanding of the atmospheric drivers, especially during solar active periods. Instrument measurements and climate models serve as valuable tools in obtaining information regarding the occurrence of space weather events; nonetheless, both sources exhibit quantitative and qualitative limitations. Data assimilation, an evolving technique, integrates measurements and model information to optimize the state estimations. This dissertation presents developments in a data assimilation algorithm known as Estimating Model Parameters from Ionospheric Reverse Engineering (EMPIRE), and its applications in investigating the atmospheric behaviors under varying solar conditions. EMPIRE is a data assimilation algorithm specifically designed for upper atmospheric driver estimation of neutral wind and ion drifts at user-defined spatial and temporal scales. The EMPIRE application in this work aims to contribute to a more comprehensive understanding of the effects of the NILE. EMPIRE utilizes the Kalman filter to optimize state calculations primarily based on electron density rates, provided by other data assimilation algorithms. Earlier runs of the algorithm used pre-defined values for the background state covariance cross time. To address model limitations under changing geomagnetic conditions, the algorithm is enhanced by concurrently updating the background state covariance during assimilation processes. Additionally, representation error is incor- porated as a component of the observation error, and error analysis is performed through a synthetic-data study. Previously, EMPIRE fused Fabry-Perot Interferometer (FPI) neutral wind measurements, demonstrating increased agreement with validation neutral wind data. In this work, this approach is extended to augment Coherent Scatter Radar (CSR) ion drift measurements from Super Dual Auroral Radar Network (SuperDARN), providing additional insights into EMPIRE’s estimated field-perpendicular ion motion. For an in-depth exploration of storm-related NILE, both EMPIRE and another data assimilation method, the Whole Atmosphere Community Climate Model with thermosphere and ionosphere eXtension coupled with Data Assimilation Research Testbed (WACCM-X + DART), is implemented for a storm event to test the proposed NILE driving mechanism. Furthermore, this dissertation introduces a Kalman smoother technique into the EMPIRE to enhance its ability to assess past storm events, and to explore the potential for algorithm improvements.
Show less

Title: Multivariable Real-Time Detection of Acute Psychological Stress and Physical Activity in Enhancing the Efficacy of Artificial Pancreas Systems
Creator: Abdel Latif, Mahmoud Motaz
Date: 2024
Description: The management of Type 1 Diabetes (T1D) requires continuous monitoring and precise control of blood glucose levels, which can be influenced by...
Show moreThe management of Type 1 Diabetes (T1D) requires continuous monitoring and precise control of blood glucose levels, which can be influenced by various physiological factors such as physical activity (PA) and acute psychological stress (APS). This dissertation presents a novel multivariable real-time detection system designed to identify PA and APS, enhancing the efficacy of artificial pancreas (AP) systems. Using data from wearable devices, such as the Empatica E4 wristband, various physiological signals were captured, including blood volume pulse (BVP), accelerometer data (ACC), galvanic skin response (GSR), and skin temperature (ST). These signals were processed to extract features critical for classifying PA and APS. A Long Short-Term Memory (LSTM) neural network model was employed to classify different types of PA and APS events. Additionally, a multitask learning framework was developed to simultaneously estimate energy expenditure (EE) alongside the classification tasks. The study incorporated explainable artificial intelligence techniques, such as SHAP (Shapley Additive Explanations), to interpret the model’s decisions and ensure that physiologically relevant features were used in the classifications. A real-time system was implemented, integrating the detection of PA and APS events into an automated insulin delivery (AID) system. This system was validated through real-time testing with participants, demonstrating its ability to respond dynamically to physiological changes and provide timely insulin adjustments. The models achieved high classification accuracy, demonstrating that the integration of PA and APS detection into AP systems can lead to more precise insulin delivery, thereby improving glycemic control in individuals with T1D.
Show less

Title: Chicago Intermodal Commuter Transit Development: Strailman_Chris_MastersProject_2011
Creator: Strailman, Chris
Date: 4/27/2011, 2011-05
Description: This project focuses on the connectivity of different forms of transit and different neighborhoods in Chicago. Starting at the scale of city...
Show moreThis project focuses on the connectivity of different forms of transit and different neighborhoods in Chicago. Starting at the scale of city wide transit systems, it narrows down to a specific node and deals with the design and planning of a transit oriented development.
Show less

Title: The Odd Couple: FINAL SLIDESHOW
Creator: Bacheller, Tim
Date: 5/4/2011, 2011-05
Description: The socio-political structure of Belgium, a whole containing disparate parts, serves as the catalyst for The Odd Couple: two individual...
Show moreThe socio-political structure of Belgium, a whole containing disparate parts, serves as the catalyst for The Odd Couple: two individual secondary schools in Brussels, one Dutch-speaking, the other French-speaking, sharing the same site. The common element shared among the two schools is the public realm. Rather than shunning the public, the public is encouraged to actively engage in activities within the building. In this way the common spaces throughout the building take on the role of serving the needs and desires of both schools and the public, resulting in the necessity for dialogue and cooperation. By filtering program through a socio-political lens, a “school” typology emerges that emphasizes interaction and extramural learning.
Sponsorship: Conger-Austin, Susan
Show less

Title: Room For Growth
Creator: Mckenzie, Jennifer
Date: 2011, 2011-05
Description: The project is a resource center for formally incarcerated people returning to civil society. Many transitional facilities are overrun with...
Show moreThe project is a resource center for formally incarcerated people returning to civil society. Many transitional facilities are overrun with the great flux of people reentering society every year. Room for Growth project proposes to stabalize this group of people by offering another option of counseling centers, housing and work training facilities in the Washington Park neighborhood of Chicago.
Show less

Title: Room For Growth: Room for Growth_Final Board
Creator: Mckenzie, Jennifer
Date: 2011, 2011-05
Description: The project is a resource center for formally incarcerated people returning to civil society. Many transitional facilities are overrun with...
Show moreThe project is a resource center for formally incarcerated people returning to civil society. Many transitional facilities are overrun with the great flux of people reentering society every year. Room for Growth project proposes to stabalize this group of people by offering another option of counseling centers, housing and work training facilities in the Washington Park neighborhood of Chicago.
Show less

Title: Room For Growth: Room for Growth_Final Presentation
Creator: Mckenzie, Jennifer
Date: 2011, 2011-05
Description: The project is a resource center for formally incarcerated people returning to civil society. Many transitional facilities are overrun with...
Show moreThe project is a resource center for formally incarcerated people returning to civil society. Many transitional facilities are overrun with the great flux of people reentering society every year. Room for Growth project proposes to stabalize this group of people by offering another option of counseling centers, housing and work training facilities in the Washington Park neighborhood of Chicago.
Show less

Title: Room For Growth: Room for Growth_Supplement Appendix
Creator: Mckenzie, Jennifer
Date: 2011, 2011-05
Description: The project is a resource center for formally incarcerated people returning to civil society. Many transitional facilities are overrun with...
Show moreThe project is a resource center for formally incarcerated people returning to civil society. Many transitional facilities are overrun with the great flux of people reentering society every year. Room for Growth project proposes to stabalize this group of people by offering another option of counseling centers, housing and work training facilities in the Washington Park neighborhood of Chicago.
Show less

Title: The Odd Couple
Creator: Bacheller, Tim
Date: 5/4/2011, 2011-05
Description: The socio-political structure of Belgium, a whole containing disparate parts, serves as the catalyst for The Odd Couple: two individual...
Show moreThe socio-political structure of Belgium, a whole containing disparate parts, serves as the catalyst for The Odd Couple: two individual secondary schools in Brussels, one Dutch-speaking, the other French-speaking, sharing the same site. The common element shared among the two schools is the public realm. Rather than shunning the public, the public is encouraged to actively engage in activities within the building. In this way the common spaces throughout the building take on the role of serving the needs and desires of both schools and the public, resulting in the necessity for dialogue and cooperation. By filtering program through a socio-political lens, a “school” typology emerges that emphasizes interaction and extramural learning.
Sponsorship: Conger-Austin, Susan
Show less

Title: Library ReDefinition
Creator: Avery, Brian
Date: 2011, 2011-05
Description: The Alcuin Library was designed in the 1960's by Marcel Breuer when the purpose of a library was to provide storage of, and access to,...
Show moreThe Alcuin Library was designed in the 1960's by Marcel Breuer when the purpose of a library was to provide storage of, and access to, information. This project is an addition and renovation of the existing academic library into a campus center concentrated on learning information.
Show less

Title: Pritzker Mediatheque: panel
Creator: Song, Youkeun
Date: 5/4/2011, 2011-05
Description: This project is about Renovation of Pritzker Park with refurbishing an underutilized urban pocket park, by adding a public community facility.
...
Show moreThis project is about Renovation of Pritzker Park with refurbishing an underutilized urban pocket park, by adding a public community facility.
Sponsorship: Denison, Dirk
Show less

Title: Moments of Understanding - Tribal Culture Center
Creator: Hussain, Tanveer
Date: 2012-05-01, 2012-05
Description: The main purpose of the Tribal Cultural Center is to offer a platform for the local public, tribal country’s key leaders to communicate with...
Show moreThe main purpose of the Tribal Cultural Center is to offer a platform for the local public, tribal country’s key leaders to communicate with the goal of promoting peace and prosperity to the region. This project will help these leaders create the moments of understanding for the future of generations to come (Power of democracy). It will also help to educate and train the young tribesmen so they can contribute their knowledge to their local tribes. Architecturally, site planning, landscape design and using the traditional local materials with modern construction techniques were explored.
Show less

Title: Moments of Understanding - Tribal Culture Center: Moments of Understanding - Tribal Culture Center (Boards)
Creator: Hussain, Tanveer
Date: 2012-05-01, 2012-05
Description: The main purpose of the Tribal Cultural Center is to offer a platform for the local public, tribal country’s key leaders to communicate with...
Show moreThe main purpose of the Tribal Cultural Center is to offer a platform for the local public, tribal country’s key leaders to communicate with the goal of promoting peace and prosperity to the region. This project will help these leaders create the moments of understanding for the future of generations to come (Power of democracy). It will also help to educate and train the young tribesmen so they can contribute their knowledge to their local tribes. Architecturally, site planning, landscape design and using the traditional local materials with modern construction techniques were explored.
Show less

Title: Bucktown Artist's Live/Work Cooperative: COLLIER_Final_MP
Creator: Collier, T Scott
Date: 2011-05, 2011-05
Description: By creating affordable live-work environments and a cooperative production facility the project will reestablish the Bucktown neighborhood as...
Show moreBy creating affordable live-work environments and a cooperative production facility the project will reestablish the Bucktown neighborhood as a strong and viable artist community in the city of Chicago.
Show less

Title: Bucktown Artist's Live/Work Cooperative: FinalBoard
Creator: Collier, T Scott
Date: 2011-05, 2011-05
Description: By creating affordable live-work environments and a cooperative production facility the project will reestablish the Bucktown neighborhood as...
Show moreBy creating affordable live-work environments and a cooperative production facility the project will reestablish the Bucktown neighborhood as a strong and viable artist community in the city of Chicago.
Show less

Title: Chicago Intermodal Commuter Transit Development
Creator: Strailman, Chris
Date: 4/27/2011, 2011-05
Description: This project focuses on the connectivity of different forms of transit and different neighborhoods in Chicago. Starting at the scale of city...
Show moreThis project focuses on the connectivity of different forms of transit and different neighborhoods in Chicago. Starting at the scale of city wide transit systems, it narrows down to a specific node and deals with the design and planning of a transit oriented development.
Show less

Title: Chicago Intermodal Commuter Transit Development: Poster_2_Final
Creator: Strailman, Chris
Date: 4/27/2011, 2011-05
Description: This project focuses on the connectivity of different forms of transit and different neighborhoods in Chicago. Starting at the scale of city...
Show moreThis project focuses on the connectivity of different forms of transit and different neighborhoods in Chicago. Starting at the scale of city wide transit systems, it narrows down to a specific node and deals with the design and planning of a transit oriented development.
Show less

repository.iit

Search the repository

Pages

Pages