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- Title
- Maximal Length Projections in Group Algebras with Applications to Linear Rank Tests of Uniformity
- Description
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Let G be a finite group, let CG be the complex group algebra of G, and let p ∈ CG. In this paper, we show how to construct submodules S of CG...
Show moreLet G be a finite group, let CG be the complex group algebra of G, and let p ∈ CG. In this paper, we show how to construct submodules S of CG of a fixed dimension with the property that the orthogonal projection of p onto S has maximal length. We then provide an example of how such submodules for the symmetric group Sn can be used to create new linear rank tests of uniformity in statistics for survey data that arises when respondents are asked to give a complete ranking of n items.
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- Journal of Algebraic Statistics
- Title
- A Gröbner Basis Database
- Date
- 2022,
- Title
- Research in Architectural Education: Theory and Practice of Visual Training
- Date
- 2016, 12/12/2016
- Collection
- Enquiry
- Title
- Views on Ethical Issues in Research Labs: a University-Wide Survey
- Date
- 2021,
- Description
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Full survey used for "Views on Ethical Issues in Research Labs" published in the journal Accountability in Research: Policies and Quality...
Show moreFull survey used for "Views on Ethical Issues in Research Labs" published in the journal Accountability in Research: Policies and Quality Assurance in 2021. This survey was completed in 2017.
Sponsorship: National Science Foundation
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- Accountability in Research: Policies and Quality Assurance
- Title
- Modeling enantiomeric separations as an interfacial process using amylose tris(3,5-dimethylphenyl carbamate) (ADMPC) polymers coated on amorphous silica
- Date
- 2020, 2020-01-20
- Publisher
- ACS Langmuir
- Description
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In the present study, we present a model to predict the chiral separation results for drug enantiomers by ADMPC chiral stationary phase in...
Show moreIn the present study, we present a model to predict the chiral separation results for drug enantiomers by ADMPC chiral stationary phase in high performance liquid chromatography (HPLC) wherein multiple ADMPC polymer strands are coated on an amorphous silica slab. Both reactive and classical MD are used to prepare the surface. Using various MD techniques, we successfully coat ADMPCs onto the surface without losing the structural character of the backbone in the presence of the solvent system. Not only is this model more representative of the polymer surface on a solid support that is encountered by the enantiomers, it also provides more opportunities for chiral molecules interacting with ADMPC, resulting in a better agreement compared with experiment when we use overall average quantities as the metric. In our previous studies, we had used a single polymer strand of amylose tris(3,5-dimethylphenyl carbamate) (ADMPC) in the solvent system. The new model provides the possibility for large drug molecules to interact with two polymer strands at the same instant, which was not possible to model with only a single polymer strand in the solvent. For a better understanding of why some metrics are better predictors than others, we use charts of the distribution of hydrogen bonding lifetimes in this work to display the hydrogen-bonding information for various donor-acceptor pairs that contribute to the interaction events determining the relative retention times for the enantiomers. We also examine the contribution of the ring-ring interactions to the molecular recognition process and ultimately to differential retention of S and R enantiomers. The results using the new model are more consistent than the previous models and resolves the problematic case of two drugs, thalidomide and valsartan.
Sponsorship: The National Science Foundation (CBET 1545560)
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- Title
- USING COMPUTATIONAL MOLECULAR MODELING TO STUDY TRANSPORT PROCESSES OF INTEREST IN SEPARATIONS
- Date
- 2020, 2020
- Publisher
- ProQuest
- Description
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Separation processes are widely used in chemical productions. The further development of membrane-based separation processes, compared with...
Show moreSeparation processes are widely used in chemical productions. The further development of membrane-based separation processes, compared with thermal separations, can lead to significant energy savings in chemical process industries. However, the main obstacle of experiments is that many separation processes are not well understood at the fundamental molecular level. In this dissertation, we use computational molecular modeling tools, mainly classical molecular dynamics (MD), to clarify molecular forces and provide detail at a molecular level, which can aid in the understanding of transport process and designing materials for a proposed application. In the first study, we investigated separation of water/alcohol vapor using zeolite membranes. Experimentally, the separation of water/isopropanol (IPA) mixtures shows a dramatic decrease in selectivity due to increase of IPA flux as the feed water concentration decrease when using the sodium A zeolite membrane. We used molecular dynamics simulations to help our experimental collaborators understand these puzzling results. The MD results reveal that the water molecules gather around the defect pores on the zeolite membrane, which stops the IPA from going through the membrane and has a positive effect on separation. Then, we studied the HPLC used to separate chiral drug mixtures. One popular chiral stationary phase, amylose tris(3,5-dimethylphenyl carbamate) (ADMPC), has been investigated using both experimental and computational methods; however, the dynamic nature of the interaction between enantiomers and ADMPC, as well as the solvent effects on the ADMPC-enantiomer interaction, are currently absent from the chiral recognition mechanism. We used MD simulations to model the ADMPC in different solvents to elucidate the chiral recognition mechanism from a new dynamic perspective. The ADMPC is found to hold the left-handed helical structure in both methanol and heptane/IPA (90/10); however, the ADMPC has a more extended average structure in heptane/IPA. We developed a model where the ADMPC atoms were restricted in the MD simulation. To better understand the molecular dynamic chiral recognition that provides the retention factor and the elution order in HPLC, we examined hydrogen bonding lifetimes, and mapped out ring-ring interactions between the drugs and the ADMPC. We discover several MD metrics related to hydrogen-bonding lifetimes and correlate them with HPLC results. One metric provides a prediction of the correct elution order 90%, and the ratios of these quantities for the enantiomers provide linear correlation (0.85 coefficient) with experimental retention factors. In the following study, we presented an improved model wherein multiple ADMPC polymer strands are coated on an amorphous silica slab. Using various MD techniques, we successfully coated ADMPCs onto the surface without losing the structural character of the backbone in the solvent. This model provides more opportunities for chiral molecules interacting with ADMPC, resulting in a better agreement compared with experiment when using the overall average metric. The new model also provides the possibility for drug molecules to interact with two polymer strands simultaneously, which is not possible in the previous single-strand model. For a better understanding of why some metrics are better predictors than others, we used charts of the distribution of hydrogen bonding lifetimes to display the information for various donor-acceptor pairs. The results are more consistent than the previous models and resolves the problematic cases of thalidomide and valsartan. Besides the membrane-based separations, immiscible liquid-liquid equilibrium states were also studied. We successfully predicted results based on MD simulations and showed comparable accuracy with experimental data. This method has applications in liquid-liquid extraction which is widely used in industrial separation process.
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- Title
- The City in the Landscape: Alfred Caldwell's Broader Perspective on Urban Design
- Date
- 2020, 2020
- Publisher
- Editorial Universitat Politècnica de València
- Description
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Alfred Caldwell was among the first full- time American professors Mies van der Rohe hired at the Illinois...
Show moreAlfred Caldwell was among the first full- time American professors Mies van der Rohe hired at the Illinois Institute of Technology (IIT). Many have admired Mies’s architecture since the 1920s, and know that his ideas were also transmitted as a professor, first at the Bauhaus in Europe and then as Director of the Department of Architecture at IIT. Caldwell, a practicing landscape architect and protégé of Jens Jensen, is perhaps less widely known, but was a major influence on IIT’s program especially in the areas of construction, landscape, and architectural history. Caldwell completed a Master of Science in City Planning with a thesis entitled The City in the Landscape: A Preface for Planning, which can be considered a manifesto of both his professional ideas and IIT’s planning pedagogy. In addition to his own works, Caldwell collaborated with Mies and architect Ludwig Hilberseimer, Director of City and Regional Planning at IIT and former Head of Building Theory at the Bauhaus, on the design of built works which left behind artifacts representing the ideal of “the city in the landscape.” This communication examines the broader perspective on urban design influenced by the symbiotic disciplines of architecture, city-regional planning and landscape as manifested in the individual and collaborative built work and pedagogy of Caldwell, Hilberseimer, and Mies.
Originally published as paper #1.01 in volume 1 of the conference proceedings of the EAAE-ARCC International Conference & 2nd Valencia International Biennial.
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- EAAE-ARCC International Conference & 2nd Valencia International Biennial
- Title
- Matrix Completion for the Independence Model
- Description
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We investigate the problem of completing partial matrices to rank-one matrices in the standard simplex ∆mn−1. The motivation for studying this...
Show moreWe investigate the problem of completing partial matrices to rank-one matrices in the standard simplex ∆mn−1. The motivation for studying this problem comes from statistics: A lack of eligible completion can provide a falsification test for partial observations to come from the independence model. For each pattern of specified entries, we give equations and inequalities which are satisfied if and only if an eligible completion exists. We also describe the set of valid completions, and we optimize over this set.
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- Journal of Algebraic Statistics
- Title
- One example of general unidentifiable tensors
- Description
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Abstract. Theidentifiabilityofparametersinaprobabilisticmodelisacrucialnotioninstatistical inference. We prove that a general tensor of rank 8...
Show moreAbstract. Theidentifiabilityofparametersinaprobabilisticmodelisacrucialnotioninstatistical inference. We prove that a general tensor of rank 8 in C3 ⊗ C6 ⊗ C6 has at least 6 decompositions as sum of simple tensors, so it is not 8-identifiable. This is the highest known example of balanced tensors of dimension 3, which are not k-identifiable, when k is smaller than the generic rank.
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- Journal of Algebraic Statistics
- Title
- L-cumulants, L-cumulant embeddings and algebraic statistics, AS2012 Special Volume, part 1: This issue includes a second series of papers from talks, posters and collaborations resulting from and inspired by the Algebraic Statistics in the Alleghenies Conference at Penn State, which took place in July 2012.
- Description
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Focusing on the discrete probabilistic setting we generalize the combinatorial definition of cumulants to L-cumulants. This generalization...
Show moreFocusing on the discrete probabilistic setting we generalize the combinatorial definition of cumulants to L-cumulants. This generalization keeps all the desired properties of the classical cumulants like semi-invariance and vanishing for independent blocks of random variables. These properties make L-cumulants useful for the algebraic analysis of statistical models. We illustrate this for general Markov models and hidden Markov processes in the case when the hidden process is binary. The main motivation of this work is to understand cumulant-like coordinates in alge- braic statistics and to give a more insightful explanation why tree cumulants give such an elegant description of binary hidden tree models. Moreover, we argue that L-cumulants can be used in the analysis of certain classical algebraic varieties.
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- Journal of Algebraic Statistics
- Title
- Understanding Requirement & the necessary tools
- Date
- 2021,
- Description
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Effective use of the Requirement gathering is our greatest and most critical role. We need to communicate with stakeholders to make the best...
Show moreEffective use of the Requirement gathering is our greatest and most critical role. We need to communicate with stakeholders to make the best of it. The techniques mentioned here are mixed and for each project, the mix shall be different. This technique for gathering requirements is perhaps the most common way to obtain requirements from all the required techniques. This article also looks at how to run a Delphi session, Creating Affinity Diagram & Mind maps.
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- Title
- How to gather & understand requirements
- Date
- 2021,
- Description
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Effective use of the Requirement gathering is our greatest and most critical role. We need to communicate with stakeholders to make the best...
Show moreEffective use of the Requirement gathering is our greatest and most critical role. We need to communicate with stakeholders to make the best of it. The techniques mentioned here are mixed and for each project, the mix shall be different. This technique for gathering requirements is perhaps the most common way to obtain requirements from all the required techniques. This article also looks at how to run a Delphi session, Creating Affinity Diagram & Mind maps.
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- Title
- How to Plan and Analyze the Process Opportunity?
- Date
- 2021,
- Description
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Organizations are organically grown, and it can be very satisfying to see them thrive under the right conditions and treatment just like their...
Show moreOrganizations are organically grown, and it can be very satisfying to see them thrive under the right conditions and treatment just like their botanical equivalents. But, at some stage, if you're not cautious, they can uncontrollably sprout and spread out until one day they've begun strangling themselves and even others. Organizations are strangling by not responding to development. As new people enter, procedures that worked perfectly in the beginning with only one participant often get unsuccessful, sometimes painful. It's easy to spot the signs of stressful processes; increased stress, constant yet insufficient coordination, low levels of effort and resources, bottlenecks, e-mail congestion, repeated progress updates, expired tabs, dysfunctional rules, low productivity the list continues. With Business Improvement it becomes very critical on how we plan & what are the facts which we have derived from the initial analysis. In this article, we will try to cover different tools that can be used for analyzing & planning.
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- Title
- Which should you be the flowchart for your Process?
- Date
- 2021,
- Description
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A flowchart or Process Flow is a powerful business tool. With proper design and construction, it communicates the steps in a process very...
Show moreA flowchart or Process Flow is a powerful business tool. With proper design and construction, it communicates the steps in a process very effectively and efficiently. There are a variety of ways to make a flowchart. Initially, flowcharts were made by hand using a pencil and paper. Until the advent of a personal computer, drawing models made of plastic flowchart form outlines helped flowchart designers work faster and gave their diagrams a more detailed look. Flowcharts were initially used by industrial engineers to organize work processes such as assembly line output. Today, flowcharts are used for several purposes in manufacturing, architecture, engineering, industry, technology, education, research, medicine, government, administration, and many other fields. In this article, we will be looking at different types of Flowchart & their usages
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- Title
- Process Engineering
- Date
- 2021,
- Description
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As a futuristic approach in order to increase their productivity and efficiency while being agile and quick to adapt to the new dynamic...
Show moreAs a futuristic approach in order to increase their productivity and efficiency while being agile and quick to adapt to the new dynamic environment, companies must undergo business process reengineering as a potential trend. The digitizing period is followed by an accelerating IT cycle, often linking reengineering with tech or IT revolution. The article discusses what is a Business Process, what are the opportunities for Improvements, how to measure the success criteria, what are different process flow & the value for an organization to achieve the objective of business process improvement
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- Title
- Priming Movie Product Placements: New Insights from a Cross-National Case Study
- Date
- 44354, 44327
- Publisher
- Taylor & Francis
- Description
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The paucity of research on priming product placements and insights from practitioners (Study 1) motivated our investigation into how and when...
Show moreThe paucity of research on priming product placements and insights from practitioners (Study 1) motivated our investigation into how and when priming works in movie placements. Study 2 explores the impact of media priming (a media story announcing a movie placement before the movie’s release) and ad priming (a similar ad announcement) on recall through contrasts with no priming (control). US students watched a movie in a theatre after such priming for a subtle or a prominent placement. When compared to no priming, both media priming and ad priming enhanced recall for the subtle placement; no difference in recall performance emerged between no priming and either type of priming for the prominent placement. Contrast tests comparing media priming and ad priming indicated no differences in recall for either subtle or prominent placement. Study 3 replicated these recall findings with Italian moviegoers, and supported additional hypotheses and propositions for brand attitude. For the subtle (prominent) placement, attitude did not change (decreased) when comparing either media priming or ad priming with no priming. Contrast tests comparing media priming and ad priming indicated no differences in attitude outcomes, for either subtle or prominent placement. Using no priming as a baseline for comparison, the converging conclusion is that any type of priming improves (does not change) recall and does not change (worsens) attitude for subtle (prominent) placements. Overall, results do not support priming for prominent placements; selective use of any type of priming for subtle placements appears appropriate to improve recall outcomes.
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- International Journal of Advertising
- Title
- Engineering Ethics in China
- Creator
- Zhang, Hengli, Davis, Michael
- Date
- 2018
- Description
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This article describes China’s century-long concern...
Show moreThis article describes China’s century-long concern with the professional ethics of engineers, especially a succession of codes of engineering ethics going back at least to 1933. This description is the result both of our own archival research and of “philosophical history”, the application of concepts from the philosophy of professions to the facts historians (or we) have discovered. Engineers, historians, social scientists, and philosophers of technology, as well as students of professional ethics, should find this description interesting. It certainly provides a reason to wonder whether those who write about codes of professional ethics as if they were an Anglo-American export unlikely to put down roots elsewhere might have overlooked many early codes outside English-speaking countries. While code writers in China plainly learned from Western codes, the Chinese codes were not mere copies of their Western counterparts. Indeed, the Chinese codes sometimes differed inventively from Western codes in form (for example, being wholly positive) or content (for example, protecting local culture).
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- Business and Professional Ethics Journal
- Title
- “Broader Impacts” or “Responsible Research and Innovation”? A Comparison of Two Criteria for Funding Research in Science and Engineering
- Creator
- Davis, Michael, Laas, Kelly
- Date
- 2013-10, 2013-10
- Publisher
- Springer
- Description
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Our subject is how the experience of Americans with a certain funding criterion, “broader impacts” (and some similar criteria) may help in...
Show moreOur subject is how the experience of Americans with a certain funding criterion, “broader impacts” (and some similar criteria) may help in efforts to turn the European concept of Responsible Research and Innovation (RRI) into a useful guide to funding Europe’s scientific and technical research. We believe this comparison may also be as enlightening for Americans concerned with revising research policy. We have organized our report around René Von Schomberg’s definition of RRI, since it seems both to cover what the European research group to which we belong is interested in and to be the only widely accepted definition of RRI. According to Von Schomberg, RRI: “… is a transparent, interactive process by which societal actors and innovators become mutually responsive to each other with a view to the (ethical) acceptability, sustainability and societal desirability of the innovation process and its marketable products (in order to allow a proper embedding of scientific and technological advances in our society).” While RRI seeks fundamental changes in the way research is conducted, Broader Impacts is more concerned with more peripheral aspects of research: widening participation of disadvantaged groups, recruiting the next generation of scientists, increasing the speed with which results are used, and so on. Nevertheless, an examination of the broadening of funding criteria over the last four decades suggests that National Science Foundation has been moving in the direction of RRI.
Sponsorship: European Community’s Seventh Framework Programme grant number 321400.
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- Title
- Asian American Chicago Network: A Case Study of Facebook Group Use By Immigrant Groups
- Creator
- Rao, Xi, Hemphill, Libby
- Date
- 2016, 2016
- Publisher
- ACM
- Description
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Through analyzing data from posts and about users, we describe how one particular Facebook group helps immigrants to the U.S. use social media...
Show moreThrough analyzing data from posts and about users, we describe how one particular Facebook group helps immigrants to the U.S. use social media to build a local community. As a preliminary study in intercultural communication through social media, we analyze one case, the Asian American Chicago Network (AACN) Facebook group, and uncover common topics users discuss and relationships between user tenure and various indicators of leadership and interaction. Our small finalized results from this preliminary project suggest that members of AACN likely use it (1) to build a professional network in the U.S.A., and (2) to reinforce and affirm their Asian culture and identities.
Sponsorship: National Science Foundation Award Number 1525662
Rao, X., & Hemphill, L. (2016). Asian American Chicago Network: A Case Study of Facebook Group Use By Immigrant Groups. In Proceedings of the 19th ACM Conference on Computer Supported Cooperative Work and Social Computing Companion (pp. 381–384). New York, NY, USA: ACM. http://doi.org/10.1145/2818052.2869077
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- Title
- INTELLIGENT PROCESS-CONTROL WITH SUPERVISORY KNOWLEDGE-BASED SYSTEMS
- Creator
- Kendra, S. J., Basila, M. R., Cinar, A.
- Date
- 1994-06
- Description
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The integration of a supervisory knowledge-based system (KBS) with a multivariable control system is examined to provide robust multivariable...
Show moreThe integration of a supervisory knowledge-based system (KBS) with a multivariable control system is examined to provide robust multivariable control of a chemical reaction process. The supervisory KBS is capable of monitoring the process to detect system faults as well as assessing control system performance. If a control system performance deficiency is detected, the KBS formulates and implements the necessary corrective controller tuning. This adaptive capability reduces the conservatism of the robust control system. The underlying mechanisms are discussed and the re-tuning ability of the KBS is illustrated by using rigorous simulations of a chemical reaction process
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