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Title: Synthesis and Processing of NaSICON Membranes with High Ionic Conductivity and Good Mechanical Strength
Creator: Chiang, Shan-Ju
Date: 2019
Description: Natrium super ion conductors (NaSICONs), Na1+xZr2SixP3-xO12 (0 ≤ x ≤ 3) are compounds that commonly used as solid electrolytes and membranes...
Show moreNatrium super ion conductors (NaSICONs), Na1+xZr2SixP3-xO12 (0 ≤ x ≤ 3) are compounds that commonly used as solid electrolytes and membranes of sodium based batteries, or in gas sensors and fuel cells due to their high sodium ion conductivity, low thermal expansion, and ability to accommodate ions in the lattice. However, NaSICON with high relative density (> 97%) and minimum impurity phases is found to be very difficult to obtain. Furthermore, the cost of the general synthesis methods is a serious drawback. Multi-high-temperature heating procedures is often employed to increase the density and to attain the single phase NaSICON because the particle size and free ZrO2 are better reduced. This research explores the possibility of densification and synthesis of NaSICON in one high-temperature reaction through a novel process termed Integrated Mechanical and Thermal Activation (IMTA) and the co-sintering behavior as well as the NaSICON composite membranes from tape casting. The sintering temperature of NaSICON was decreased by mechanical activation at room temperature using high-energy ball milling. Sintered NaSICON-based materials showed highest total ionic conductivity of 1.45 × 10-3 S cm-1 at room temperature and high density of 3.155 g cm-3 (96.5%). An alternative to obtaining full densification (99%) of NaSICON ceramics was developed utilizing traditional solid-state reaction. This sintered NaSICON without any sintering aid exhibited the total conductivity, 6.59 × 10-4 S cm-1 at 25 °C, and the highest density of 3.238 g cm-3, a better than 2.6% enhancement from the original samples.The second part of the work has comprised of successful fabrication of NaSICON/polymer composite membranes and bi-layered NaSICON/stainless steel membranes to enhance the mechanical flexibility of pure NaSICON films. The effect of different particle sizes of stainless steel on the sintering behavior and shrinkage rate were studied systematically. The effect of solid content in the slurry was also studied to control the density of both support layer and NaSICON body. The affect structural ratios have on co-sintered tapes along with ionic conductivity was investigated using Electrochemical Impedance Spectroscopy (EIS). The co-sintered membrane exhibited a total conductivity as high as 4.580 × 10-4 S/cm at room temperature. EIS results showed the high Na-ions conductivity strongly depends on the feature of grain boundary and the high densification of NaSICON layer.
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Title: The Snow Cruiser, 1939
Date: 1939
Description: Photograph of the Armor Research Foundation's Antarctic Snow Cruiser on a crowded street (location unknown) during the trip between Chicago...
Show morePhotograph of the Armor Research Foundation's Antarctic Snow Cruiser on a crowded street (location unknown) during the trip between Chicago and the Boston Army Wharf, the Snow Cruiser's departure point for Antarctica. The Snow Cruiser was designed by Armor Research Foundation Scientific Director Thomas C. Poulter, constructed by ARF, and taken on Richard Byrd's third Antarctic expedition. This photograph originally appeared in the December 1939 issue of the Armor Engineer and Alumnus. Photographer unknown.
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Collection: Office of Communications and Marketing photographs, 1905-1999

Title: The Snow Cruiser on the Cherry Valley Turnpike in New York, 1939
Date: 1939
Description: Photograph of the Armor Research Foundation's Antarctic Snow Cruiser on the Cherry Valley Turnpike east of Cazenovia, New York, during the...
Show morePhotograph of the Armor Research Foundation's Antarctic Snow Cruiser on the Cherry Valley Turnpike east of Cazenovia, New York, during the trip between Chicago and the Boston Army Wharf, the Snow Cruiser's departure point for Antarctica. The Snow Cruiser was designed by Armor Research Foundation Scientific Director Thomas C. Poulter, constructed by ARF, and taken on Richard Byrd's third Antarctic expedition. This photograph originally appeared as part of an advertisement for Economy Fuse and Manufacturing Co. in the December 1939 issue of the Armor Engineer and Alumnus. Photographer unknown.
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Collection: Office of Communications and Marketing photographs, 1905-1999

Title: Students cross-country skiing on the Illinois Institute of Technology campus, Chicago, Illinois, 1981
Date: 1981
Description: Photograph of students cross-country skiing in front of Hermann Hall on the Illinois Institute of Technology campus in the winter of 1981....
Show morePhotograph of students cross-country skiing in front of Hermann Hall on the Illinois Institute of Technology campus in the winter of 1981. Photographer unknown.
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Collection: Office of Communications and Marketing photographs, 1905-1999

Title: Efficient Power System Transient Simulation for Stability Studies Based on Frequency Response Optimized Approximation
Creator: Lei, Sheng
Date: 2021
Description: Power systems world-wide are going through a paradigm change with dramatically increasing power electronics integration and more emphasis on...
Show morePower systems world-wide are going through a paradigm change with dramatically increasing power electronics integration and more emphasis on the intrinsically unbalanced distribution side. The new features of power systems violate the fundamental assumptions and challenge the feasibility of transient stability simulation, a traditional tool for stability studies. Electromagnetic transient simulation is applicable to power systems with the new features, but its computational efficiency is too low with the typical microsecond-level step sizes.This dissertation aims at enabling millisecond-level step sizes, typically used in traditional transient stability simulation, in efficient electromagnetic transient simulation for system-level stability studies on unbalanced power systems, while assuring satisfactory accuracy. The approach taken is to introduce novel highly accurate numerical methods into electromagnetic transient simulation.Several implicit one-step frequency response optimized integrators considering second order derivative are proposed. Some existing numerical integrators in the literature of this category are reviewed. Their numerical properties are studied. Some of these numerical integrators are especially suitable to be used as numerical differentiators.A novel power system transient simulation scheme is put forward using the implicit one-step frequency response optimized integrators as the main numerical integrators and differentiators. Large step sizes are applicable with the proposed simulation scheme to achieve efficient electromagnetic transient simulation without sacrificing accuracy. Execution of the proposed simulation scheme is detailed.Several explicit and implicit multistep frequency response optimized integrators considering first or second order derivative are proposed. Some existing numerical integrators of these types are reviewed from the error frequency response viewpoint. Based on these numerical integrators, a prediction method is put forward to further accelerate the proposed simulation scheme without impacting its accuracy.Initialization process of the proposed simulation scheme is put forward. The initialization process calculates the periodic steady state solution of unbalanced power systems considering power flow conditions. The requirements of power system stability studies on the initial conditions for transient simulation runs are thus satisfied. Effectiveness and efficiency of the initialization process are demonstrated.Computational models of power system network elements in the proposed simulation scheme are detailed. The extended nodal analysis is put forward for the proposed simulation scheme to organize the computational models of most network elements in an efficient and elegant manner.Some power system devices are implemented with the proposed simulation scheme, including single-phase grid-feeding converter system, three-phase grid-feeding converter system, three-phase synchronous machine and three-phase induction machine. The proposed simulation scheme is shown to simultaneously achieve efficiency and accuracy as applied to these devices.The proposed simulation scheme is applied to different types of power systems, including transmission system, distribution system and combined transmission and distribution system. Its versatility is revealed. Its efficiency and accuracy are demonstrated with numerical case studies as applied to these systems.
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Title: TIMING STRATEGY OF COMMODITY MANAGERS
Creator: Lara Prado, Camila Cristina
Date: 2021
Description: The purpose of this research is to study whether commodity managers have the ability to time factor exposures. I utilize the methodology...
Show moreThe purpose of this research is to study whether commodity managers have the ability to time factor exposures. I utilize the methodology developed by Treynor and Mazuy (1966), and Henriksson and Merton (1981), and apply the four-factor commodity model of Blocher et al (2018). Specifically, I measure market timing, momentum timing, the high term (realized term premia for the commodities with above‐median basis), and low term (realized term premia for the commodities with below‐median basis) skills. These factors are chosen because each one, separately, captures a risk premium embedded in commodity futures.My results indicate that commodity managers’ returns have some statistically significant market timing abilities. This means that many managers increase exposure to the nearest contract when the spot premium return is high and decrease exposure when the spot premium return is low. Momentum timing, high term timing, and low term timing are not observed. When looking at different strategies, technical managers demonstrate stronger market timing ability than fundamental managers.
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Title: EXAMINING THE ROLES OF PUBLIC STIGMA AND ACCULTURATION ON CARE-SEEKING IN PAKISTANIS
Creator: Laique, Aamir
Date: 2021
Description: Pakistani Americans face bi-directional cultural influences related to their heritage culture and the mainstream culture of the host. The...
Show morePakistani Americans face bi-directional cultural influences related to their heritage culture and the mainstream culture of the host. The present study examined the impact of culture on the relationship between public stigma and care-seeking attitudes. A sample of 158 Pakistani Americans was collected using MTurk. Hierarchical regression was conducted to examine the moderating effect of heritage acculturation and mainstream acculturation on the relationship between public stigma and care-seeking. Multiple regression analysis predicting care-seeking from public stigma, heritage acculturation, and mainstream acculturation did not yield a statistically significant model. Hierarchical regression analyses examining the moderating effect of heritage acculturation and mainstream acculturation were non-significant. Acculturation had no notable impact on stigma and care-seeking. This study was unable to demonstrate significant results. Future considerations should include inter-generational differences, other forms of stigma that may play a crucial role, and inclusion of different measures to determine if there are other scales better suited for the target population.
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Title: Krastof, Mark, Oral History Interview, 2011
Date: 2011-05-01
Description: Video interview with Mark Krastof, who received an MS in Design from the Institute of Design in 1971. Krastof recounts his experience as a...
Show moreVideo interview with Mark Krastof, who received an MS in Design from the Institute of Design in 1971. Krastof recounts his experience as a student under Arthur Siegel, Aaron Siskind, and Garry Winogrand. Krastof shows copies of his photographs. Running time is 15:13 minutes.
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Collection: Institute of Design Photography Oral History Project, 2011

Title: Grimes, John, Oral History Interview, 2011
Date: 2011-06
Description: Video interview with John Grimes, who received an MS in Design from the Institute of Design (ID) in 1974. Grimes recounts his experiences as a...
Show moreVideo interview with John Grimes, who received an MS in Design from the Institute of Design (ID) in 1974. Grimes recounts his experiences as a student under Arthur Siegel and Garry Winogrand (adjunct faculty in 1972), as well as his time as an ID faculty member and acting director in the late 1970s. Also addressed is the history of photography at ID and photographic education in general. Running time is 1:17:39 minutes. This interview was conducted c. June 2011 in John Grimes' home office in Chesterton, Indiana.
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Collection: Institute of Design Photography Oral History Project, 2011

Title: Bulucos, Don, Oral History Interview, 2011
Date: 2011-05-01
Description: Video interview with Don Bulucos, who received an MS in Design from the Institute of Design in 1967. Bulucos recounts his experience as a...
Show moreVideo interview with Don Bulucos, who received an MS in Design from the Institute of Design in 1967. Bulucos recounts his experience as a student under Harry Callahan, Aaron Siskind, and Kenneth Josephson. Running time is 18:09 minutes.
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Collection: Institute of Design Photography Oral History Project, 2011

Title: Hansen, Glenn, Oral History Interview, 2011
Date: 2011-05-01
Description: Video interview with Glenn Hansen, who received his MS in Photography/Design from the Institute of Design in 1984. Running time is 7:11 minutes.
Collection: Institute of Design Photography Oral History Project, 2011

Title: Hocker, Thomas, Oral History Interview, 2011
Date: 2011-05-01
Description: Video interview with Thomas Hocker, who received an MS in Design from the Institute of Design in 1969. Running time is 5:42 minutes.
Collection: Institute of Design Photography Oral History Project, 2011

Title: Krejci, Donald, Oral History Interview, 2011
Date: 2011-05-01
Description: Video interview with Donald Krejci, who received an MS in Design from the Institute of Design in 1974. Krejci recounts his experience as a...
Show moreVideo interview with Donald Krejci, who received an MS in Design from the Institute of Design in 1974. Krejci recounts his experience as a student under Arthur Siegel and the details of his master's thesis. Running time is 5:59 minutes.
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Collection: Institute of Design Photography Oral History Project, 2011

Title: Kostiner, Lewis, Oral History Interview, 2011
Date: 2011-05-01
Description: Video interview with Lewis Kostiner, who received an MS in Design from the Institute of Design in 1974. Kostiner recounts his experiences as...
Show moreVideo interview with Lewis Kostiner, who received an MS in Design from the Institute of Design in 1974. Kostiner recounts his experiences as an undergraduate student at the Rhode Island School of Design under Harry Callahan and Aaron Siskind, as well as at ID as a graduate student under Arthur Siegel. Running time is 13:12 minutes.
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Collection: Institute of Design Photography Oral History Project, 2011

Title: Sterling, Deborah Oral History Interview, 2011
Date: 2011-05-01
Description: Video interview with Deborah Sterling, speaking on behalf of her deceased husband Joseph Sterling, who received his MS in Design from the...
Show moreVideo interview with Deborah Sterling, speaking on behalf of her deceased husband Joseph Sterling, who received his MS in Design from the Institute of Design in 1962. Running time is 7:36 minutes.
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Collection: Institute of Design Photography Oral History Project, 2011

Title: Josephson, Kenneth, Oral History Interview, 2011
Date: 2011-05-01
Description: Video interview with Kenneth Josephson, who received an MS in Design from the Institute of Design in 1960. Josephson recounts his experience...
Show moreVideo interview with Kenneth Josephson, who received an MS in Design from the Institute of Design in 1960. Josephson recounts his experience as a student under Harry Callahan, Aaron Siskind, and Art Sinsabaugh, as well as an ID faculty member in the mid 1960s. Running time is 19:27 minutes.
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Collection: Institute of Design Photography Oral History Project, 2011

Title: Mosher, Robert, Oral History Interview, 2011
Date: 2011-05-01
Description: Video interview with Robert (Bob) Mosher, who received an MS in Design from the Institute of Design in 1972. Mosher recounts his experience as...
Show moreVideo interview with Robert (Bob) Mosher, who received an MS in Design from the Institute of Design in 1972. Mosher recounts his experience as a student under Garry Winogrand. Running time is 7:30 minutes.
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Collection: Institute of Design Photography Oral History Project, 2011

Title: Lutch, Michael, Oral History Interview, 2011
Date: 2011-05-01
Description: Video interview with Michael Lutch, who received an MS in Design from the Institute of Design in 1974. Lutch recounts his experience as a...
Show moreVideo interview with Michael Lutch, who received an MS in Design from the Institute of Design in 1974. Lutch recounts his experience as a student under Arthur Siegel, and how ID informed his vision as a present-day commercial photographer. Running time is 9:13 minutes.
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Collection: Institute of Design Photography Oral History Project, 2011

Title: Leinwohl, Steffens, Oral History Interview, 2011
Date: 2011-05-01
Description: Video interview with Steffens (Stef) Leinwohl, who received a B.S. in Design from the Institute of Design in 1963. Leinwohl recounts his...
Show moreVideo interview with Steffens (Stef) Leinwohl, who received a B.S. in Design from the Institute of Design in 1963. Leinwohl recounts his experiences as an undergraduate photography student at ID and how the faculty and fellow students influenced him. Leinwohl displays some of his own photographs created while at ID. Running time is 32:12 minutes.
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Collection: Institute of Design Photography Oral History Project, 2011

Title: Burd, Richard, Oral History Interview, 2011
Date: 2011-05-01
Description: Video interview with Richard (Dick) Burd, who received an MS in Design from the Institute of Design in 1970. Burd recounts his experiences as...
Show moreVideo interview with Richard (Dick) Burd, who received an MS in Design from the Institute of Design in 1970. Burd recounts his experiences as a photography student at ID and how his education informs his current photography work. Running time is 10:42 minutes.
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Collection: Institute of Design Photography Oral History Project, 2011

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