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Articles 1 - 25 of 25
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The Phoenix Rises At The University Of Chicago, Jeff Rasley
The Phoenix Rises At The University Of Chicago, Jeff Rasley
Scholarship and Professional Work - LAS
Jeff Rasley’s essay “The Phoenix Rises at the University of Chicago” revels in the glory days of his old college football team, torn between the multiple goalposts of athleticism, social progressiveness and intellectualism.
Investigating The Effectiveness Of Problem-Based Learning In 3d Virtual Worlds. A Preliminary Report On The Hadrian’S Villa Project, Lee Taylor-Helms, Lynne. Kvapil, John Fillwalk, Bernard Frischer
Investigating The Effectiveness Of Problem-Based Learning In 3d Virtual Worlds. A Preliminary Report On The Hadrian’S Villa Project, Lee Taylor-Helms, Lynne. Kvapil, John Fillwalk, Bernard Frischer
Scholarship and Professional Work - LAS
This paper discusses a recent study to test the effectiveness of combining 3D virtual worlds (VWs) with Problem Based Learning (PBL) in archaeological education of undergraduate college students at two American universities. The testbed used was a virtual world of Hadrian’s Villa at Tivoli (Italy), a World Heritage Site dating to the reign of Hadrian (117-138 CE). At both universities courses were offered on the villa using a PBL approach in such a way that the relative strengths and weaknesses of learning based on face-to-face, 2D, and VW presentations could be assessed. The study helped to clarify ways in which …
Adding Gas Chromatography-Mass Spectrometry Data To A Melting Point And Thin-Layer Chromatography Laboratory, Adam M. Azman, Julie A. Barrett, Megan Darragh, John J. Esteb
Adding Gas Chromatography-Mass Spectrometry Data To A Melting Point And Thin-Layer Chromatography Laboratory, Adam M. Azman, Julie A. Barrett, Megan Darragh, John J. Esteb
Scholarship and Professional Work - LAS
The addition of gas chromatography–mass spectrometry (GC–MS) data interpretation to a thin-layer chromatography (TLC) and melting point (mp) laboratory for an introductory organic course is described.
Technology For The Organic Chemist: Three Exploratory Modules, John J. Esteb, Luanne M. Mcnulty, John Magers, Paul Morgan
Technology For The Organic Chemist: Three Exploratory Modules, John J. Esteb, Luanne M. Mcnulty, John Magers, Paul Morgan
Scholarship and Professional Work - LAS
The ability to use computer-based technology is an essential skill set for students majoring in chemistry. This exercise details the introduction of appropriate uses for this technology in the organic chemistry series. The incorporation of chemically appropriate online resources (module 1), scientific databases (module 2), and the use of a chemical drawing program (module 3) are detailed here.
Adios, Ramon Gonzales, Bryan M. Furuness
Adios, Ramon Gonzales, Bryan M. Furuness
Scholarship and Professional Work - LAS
No abstract provided.
A Flexible Solvolysis Experiment For The Undergraduate Organic Laboratory, John J. Esteb, John R. Magers, Luanne M. Mcnulty, Paul Morgan
A Flexible Solvolysis Experiment For The Undergraduate Organic Laboratory, John J. Esteb, John R. Magers, Luanne M. Mcnulty, Paul Morgan
Scholarship and Professional Work - LAS
A simple SN1 reaction is presented that uses bromotriphenylmethane and a range of oxygen-based nucleophiles including water and various alcohols. This procedure represents a process that affords easy isolation of solid products. Typical student yields ranged from 17–128% with the average yield of 50%. Students obtained products with a melting point range of 140 to 164 °C. This procedure offers multiple ways to adapt this experiment from a straight solvolysis reaction to a discovery-based experiment that explores the effect of nucleophile (for a more advanced group) or the method of product isolation.
A Simple Sn2 Reaction For The Undergraduate Organic Laboratory, John J. Esteb
A Simple Sn2 Reaction For The Undergraduate Organic Laboratory, John J. Esteb
Scholarship and Professional Work - LAS
A simple procedure for the synthesis of n-butyl naphthyl ether is presented. This procedure represents an easy method for the production of an aryl ether by an SN2 reaction, uses ethanol as an environmentally friendly solvent, and does not require the use of a lachrymator. Product isolation is done by pouring the reaction mixture over ice and collecting the solid by suction filtration. Students typically recover from 7–95% of the ether.
Temperature-Driven Transition From The Wigner Crystal To The Bond-Charge-Density Wave In The Quasi-One-Dimensional Quarter-Filled Band, Rahul Hardikar
Temperature-Driven Transition From The Wigner Crystal To The Bond-Charge-Density Wave In The Quasi-One-Dimensional Quarter-Filled Band, Rahul Hardikar
Scholarship and Professional Work - LAS
It is known that within the interacting electron model Hamiltonian for the one-dimensional 14-filled band, the singlet ground state is a Wigner crystal only if the nearest-neighbor electron-electron repulsion is larger than a critical value. We show that this critical nearest-neighbor Coulomb interaction is different for each spin subspace, with the critical value decreasing with increasing spin. As a consequence, with the lowering of temperature, there can occur a transition from a Wigner crystal charge-ordered state to a spin-Peierls state that is a bond-charge-density wave with charge occupancies different from the Wigner crystal. This transition is possible because spin excitations …
On The Size Of Succinct Indices, Alexander Golynski, Ankur Gupta
On The Size Of Succinct Indices, Alexander Golynski, Ankur Gupta
Scholarship and Professional Work - LAS
A succinct data structure occupies an amount of space that is close to the information-theoretic minimum plus an additional term. The latter is not necessarily a lower-order term and, in several cases, completely dominates the space occupancy both in theory and in practice. In this paper, we present several solutions to partially overcome this problem, introducing new techniques of independent interest that allow us to improve over previously known upper and lower bounds.
Projects That Assist With Content In A Traditional Organic Chemistry Course, John J. Esteb, John R. Magers, Luanne Mcnulty, Anne M. Wilson
Projects That Assist With Content In A Traditional Organic Chemistry Course, John J. Esteb, John R. Magers, Luanne Mcnulty, Anne M. Wilson
Scholarship and Professional Work - LAS
Projects that engage undergraduate students in content-based courses, such as organic chemistry, must relate to the material and provide useful tools for the divergent needs of the students. There are few examples of these types of projects in the literature. Herein, we describe two projects, the reaction notebook and the end-of-semester synthesis activity. Each project is designed to stimulate student ownership of the material and leads to engagement with the content of the course.
Endothelial Cell Cortactin Coordinates Icam-1 Clustering And Actin Cytoskeleton Remodeling During Polymorphonuclear Leukocyte Adhesion And Transmigration, Jennifer Kowalski
Endothelial Cell Cortactin Coordinates Icam-1 Clustering And Actin Cytoskeleton Remodeling During Polymorphonuclear Leukocyte Adhesion And Transmigration, Jennifer Kowalski
Scholarship and Professional Work - LAS
Endothelial cell ICAM-1 interacts with leukocyte beta2 integrins to mediate adhesion and transmit outside-in signals that facilitate leukocyte transmigration. ICAM-1 redistribution and clustering appear necessary for leukocyte transmigration, but the mechanisms controlling ICAM-1 redistribution and clustering have not been identified. We recently reported that Src kinase phosphorylation of endothelial cortactin regulates polymorphonuclear cell (PMN) transmigration. In this study, we tested the hypotheses that the Src family kinase-cortactin pathway mediates association of ICAM-1 with the actin cytoskeleton and that this association is required for ICAM-1 clustering and leukocyte transmigration. Cross-linking ICAM-1 induced cytoskeletal remodeling and a decrease in ICAM-1 lateral mobility, …
A Solvent-Free Baeyer–Villiger Lactonization For The Undergraduate Organic Laboratory: Synthesis Of Γ-T-Butyl-Ε-Caprolactone, John J. Esteb, James N. Hohman, Diana E. Schladaminger, Anne M. Wilson
A Solvent-Free Baeyer–Villiger Lactonization For The Undergraduate Organic Laboratory: Synthesis Of Γ-T-Butyl-Ε-Caprolactone, John J. Esteb, James N. Hohman, Diana E. Schladaminger, Anne M. Wilson
Scholarship and Professional Work - LAS
We present an experiment involving the Baeyer–Villiger oxidation reactionfor a first-year organic chemistry class. The Baeyer–Villiger reactionprovides an efficient method to convert ketones to esters or lactones. Most organictextbooks cover the Baeyer–Villiger reaction but owing to a lack of suitableexperiments, students seldom get to explore the reaction in the undergraduateteaching laboratory. In this experiment, m-chloroperoxybenzoic acid(m-CPBA) and4-tert-butylcyclohexanone are mixed together for 30 minutes under solvent-freeconditions to produce γ-t-butyl-ε-caprolactone in 95%yield. The solvent-free nature of this procedure greatly limits the quantityof waste generated by students and keeps costs low by removing the need for solvent.
Solvent-Free Conversion Of Alpha-Naphthaldehyde To 1-Naphthoic Acid And 1-Naphthalenemethanol: Application Of The Cannizzaro Reaction, John J. Esteb, Keith M. Glogorich, Stacey A. O'Reilly
Solvent-Free Conversion Of Alpha-Naphthaldehyde To 1-Naphthoic Acid And 1-Naphthalenemethanol: Application Of The Cannizzaro Reaction, John J. Esteb, Keith M. Glogorich, Stacey A. O'Reilly
Scholarship and Professional Work - LAS
The Cannizzaro reaction is routinely covered in organic textbooks, but owing to the shortage of suitable procedures for the undergraduate teaching laboratory, this reaction is seldom performed in a first-year organic chemistry class. In this experiment, powdered potassium hydroxide and α-naphthaldehyde are heated under solvent-free conditions to produce 1-naphthoic acid and 1-naphthalenemethanol in 86% and 79% yields, respectively. The solvent-free nature of this procedure greatly reduces the quantity of waste generated by students relative to the typical solvent-based method of preparation. Note:Link is to the article in a subscription database available to users affiliated with Butler University. Appropriate login information …
Simple Epoxide Formation For The Organic Laboratory Using Oxone, John J. Esteb
Simple Epoxide Formation For The Organic Laboratory Using Oxone, John J. Esteb
Scholarship and Professional Work - LAS
We present an epoxide formation experiment for a second-semester organic chemistry laboratory. This oxidation utilizes Oxone, a commercially available oxidizing agent, in the industrially relevant process of epoxide formation. The oxidant performing the oxidation is dimethyldioxirane, which is formed in situ. This experiment demonstrates a simple synthesis of an epoxide and formation of a secondary oxidizing agent.
Cautionary Comments (Author Response), John J. Esteb, Anne M. Wilson
Cautionary Comments (Author Response), John J. Esteb, Anne M. Wilson
Scholarship and Professional Work - LAS
Reply to concerns about a safety factor in the paper, “A Solvent-Free Oxidation of Alcohols in an Organic Laboratory."
A Solvent-Free Oxidation Of Alcohols In An Organic Laboratory, John J. Esteb, Michael W. Schelle, Anne N. Wilson
A Solvent-Free Oxidation Of Alcohols In An Organic Laboratory, John J. Esteb, Michael W. Schelle, Anne N. Wilson
Scholarship and Professional Work - LAS
An oxidation experiment for a first-year organic chemistry class is presented. This oxidation utilizes a solid mixture of CuSO4•5H2O and KMnO4 prepared by mortar and pestle. The oxidations take place under solvent-free conditions and near quantitative yields are obtained for the reactions. Thin-layer chromatography is used to monitor the progress of the reaction. This experiment provides for the simple oxidation of a secondary alcohol to a ketone using a relatively nontoxic oxidizing agent under solvent-free conditions.
A Solvent-Free Claisen Condensation Reaction For The Organic Laboratory, John J. Esteb, Matthew B. Stockton
A Solvent-Free Claisen Condensation Reaction For The Organic Laboratory, John J. Esteb, Matthew B. Stockton
Scholarship and Professional Work - LAS
An experiment involving the Claisen condensation reaction for a first-year organic chemistry laboratory is presented. Claisen condensations are routinely covered in organic textbooks but owing to the long reaction times required to reach equilibrium in solution they are seldom explored in the undergraduate teaching laboratory. In this experiment, potassium tert-butoxide and ethyl phenylacetate are heated to 100 °C for 30 minutes under solvent-free conditions to produce 2,4-diphenyl acetoacetate in 80% yield. The solvent-free nature of this procedure greatly reduces the quantity of waste generated by students relative to typical carbonyl condensation experiments.
Probable Causes And The Distinction Between Subjective And Objective Chance, Stuart M. Glennan
Probable Causes And The Distinction Between Subjective And Objective Chance, Stuart M. Glennan
Scholarship and Professional Work - LAS
In this paper I present both a critical appraisal of Humphreys' probabilistic theory of causality and a sketch of an alternative view of the relationship between the notions of probability and of cause. Though I do not doubt that determinism is false, I claim that the examples used to motivate Humphreys' theory typically refer to subjective rather than objective chance. Additionally, I argue on a number of grounds that Humphreys' suggestion that linear regression models be used as a canonical form for the description of causal relations is untenable. I conclude by exploring the variety of ways in which probabilistic …
Introductory Courses, Student Ethos, And Living The Life Of The Mind, Marshall W. Gregory
Introductory Courses, Student Ethos, And Living The Life Of The Mind, Marshall W. Gregory
Scholarship and Professional Work - LAS
In considering how curriculum and teaching influence education, it is revealing to note that most faculty members treat curriculum the way bankers treat investments. They generally spend much time, planning, and careful thought on curricular matters--reasoning here, analyzing there, relying on experience, and carefully considering both the long-term and short-term dividends of knowledge--but when it comes to teaching, many faculty members operate less like bankers and more like barnstormers, flying by the seat of their pants and guiding themselves primarily by instinct or by repeating whatever worked yesterday. Few teachers feel that they have either the intellectual or professional grasp …
Computationalism And The Problem Of Other Minds, Stuart M. Glennan
Computationalism And The Problem Of Other Minds, Stuart M. Glennan
Scholarship and Professional Work - LAS
In this paper I discuss Searle's claim that the computational properties of a system could never cause a system to be conscious. In the first section of the paper I argue that Searle is correct that, even if a system both behaves in a way that is characteristic of conscious agents (like ourselves) and has a computational structure similar to those agents, one cannot be certain that that system is conscious. On the other hand, I suggest that Searle's intuition that it is “empirically absurd” that such a system could be conscious is unfounded. In the second section I show …
The Humanity Of God In Liberal Orthodox Theology, Paul Valliere
The Humanity Of God In Liberal Orthodox Theology, Paul Valliere
Scholarship and Professional Work - LAS
The purpose of this paper is to present some of the testimonies of liberal Orthodox theology in late Imperial Russia concerning the theology of Incarnation. Since it may come as a surprise to many people, even to many Orthodox, that a tradition of liberal theology existed in Russian Orthodoxy, the evidence I adduce may be of interest apart from the specific theological discussion to which it pertains.
The Social And Political Role Of The Orthodox Church In Post-Communist Russia, Paul Valliere
The Social And Political Role Of The Orthodox Church In Post-Communist Russia, Paul Valliere
Scholarship and Professional Work - LAS
No abstract provided.
Narrative Voice, Point Of View, And Characterization In Graciliano Ramos's Vidas Sêcas, Linda M. Willem
Narrative Voice, Point Of View, And Characterization In Graciliano Ramos's Vidas Sêcas, Linda M. Willem
Scholarship and Professional Work - LAS
Virtually all criticism concerning Vidas Sêcas includes a discussion of its multiple point of view format and its use of free indirect style. It is generally agreed that the shifting points of view provide a multifaceted view of reality, and that the free indirect style technique is a verisimilar method of presenting the thoughts of the inarticulate protagonists, as well as being a means of combining third person objectivity with first person subjectivity. These observations, however, show a tendency to treat narrative voice and point of view as a single phenomenon, thereby blurring the distinction between the two. Yet the …
Folkloric Structure And Narrative Voice In Bècquer's Leyendas, Linda M. Willem
Folkloric Structure And Narrative Voice In Bècquer's Leyendas, Linda M. Willem
Scholarship and Professional Work - LAS
The bulk of the critical study of Gustavo Bècquer's leyendas has dealt with the thematics, stylistics, or the folkloric motifs and origins of the individual works. Surprisingly little attention has been given to the structure or the narrative techniques used in the leyendas as a whole. The purpose of this study is to examine these structural and narrative aspects from a folkloric perspective in order to better appreciate Bècquer's blending of popular and literary art forms.
Uncertainty: Behavioral And Social Dimensions, Kenneth Colburn
Uncertainty: Behavioral And Social Dimensions, Kenneth Colburn
Scholarship and Professional Work - LAS
Reviews the book "Uncertainty: Behavioral and Social Dimensions," edited by Seymour Fiddle