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A letter from Lee Iacocca to supporters of the Statue of Liberty and Ellis Island Foundation, asking for a financial contribution.
No full textA letter from Lee Iacocca to supporters of the Statue of Liberty and Ellis Island Foundation, asking for a financial contribution
The Iacocca management Iacocca: a profile of the Chrysler Chairman's unique key to business success
No full textThe author makes clear that his powers of persuasion played an important role in recruiting the executive talent which eventually brought Chrysler back from the brink of bankruptcy. But just how effective Iacocca's one-man-band brand of leadership would prove in the absence of crisis conditions remains a very open question. In brief, then, a bare-bones account of a remarkable career that others (including Iacocca in his best-selling autobiography) have covered in greater depth and with more insight
Essays on drug distribution and pricing models
No full textThis dissertation investigates distribution and pricing models for the U.S. pharmaceutical industry. Motivated by recent events in this industry, we explore three areas of the pharmaceutical supply chain in an effort to streamline the drug distribution channel and to understand the underlying market forces and the pricing structure of pharmaceutical drugs. First we present a mathematical model to compare the effectiveness of the resell distribution agreements (Buy-and-Hold and Fee-For-Service) and the direct distribution agreement (Direct-to-Pharmacy) for the U.S. pharmaceutical supply chain and its individual participants. The model features multi-period dynamic production-inventory planning with time varying parameters in a decentralized setting. While the resell agreements are asset-based, the direct agreement is not. We show that the Direct-to- Pharmacy agreement achieves the global optimum for the entire supply chain by eliminating investment buying and thus always outperforms the resell distribution agreements currently practiced in the industry. We also show that the Direct-to-Pharmacy agreement is flexible because it allows the manufacturer and the wholesaler to share the total supply chain profit in an arbitrary way. We further provide necessary conditions for all supply chain participants to be better off in the Direct-to-pharmacy agreement. Motivated by the public concern for the rising cost of prescription drugs, we next examine how four factors (the level of competition, the therapeutic purpose, the age of the drug, and the manufacturer who developed the drug) play a role in the pricing of brand-name drugs. We develop measures for these factors based on information observable to all players in the pharmaceutical supply chain. Using data on the wholesale prices of prescription drugs from a major U.S. pharmacy chain, we estimate a model for drug prices based on our measures of competition, therapeutic purpose, age, and manufacturer. We observe that proliferation of dosing levels tends to reduce the price of a drug, therapeutic conditions which are both less common and more life threatening lead to higher prices, older drugs are less expensive than newer drugs, and some manufacturers set prices systematically different from others even after controlling for other factors. Lastly, we investigate why brand-name drugs are priced higher than their generic equivalents in the U.S. market. We hypothesize that some consumers have a preference for brand names which outweighs the cost savings they could realize by switching to generics. Brand preferences are derived from two sources. First, brands may have a higher perceived quality due to advertising and marketing activities. Second, individuals are habitual in their consumption of prescription drugs, which leads to continued use of the brand in the face of generic competition. To explore these issues, we develop a structural demand model within one therapeutic class. We estimate the model using wholesale price and demand data from the years 2000 through 2004. Through this process, we estimate the brand preferences by customer utility equations. Conservatively, we see consumers willing to pay $400 more per month for a brand name drug than for its generic equivalent. In addition, consumers exhibit high switching costs for prescription drugs. Finally, we find that generic entry reduces sales only for the brand that it is replicating, but not for other brand drugs even if they treat the same condition.Ph. D.Includes bibliographical referencesIncludes vitaby Kathleen M. Iacocc
Magnonic analog of a metal-to-insulator transition in a multiferroic heterostructure
No full textWe show how, by changing the polarization value of ferroelectric domains, it is possible to tune the magnon conductivity in the ferromagnetic film layer of a multiferroic magnonic system. In particular, we suggest how to switch from a metal behavior (zero frequency gap and linear frequency-wavevector dispersion) to an insulator behavior (around 1 GHz frequency gap and parabolic dispersion). The ferroelectric film is prepared with a sequence of ferroelectric domains with a periodic variation of their polarization direction. Through inverse magnetostriction, they induce in the ferromagnetic layer a periodic magnetic anisotropy and a consequent sinusoidal magnetization. The amplitude of the sinusoidal magnetization can be varied by varying the induced magnetic anisotropy. This allows for a fine and reversible control over the curvature of the dispersion relations at the Brillouin zone boundary, as well as the width of the frequency gap. We suggest the extension of Dirac’s magnon picture to our system, finding interesting implications in terms of magnon mobility. This work expands the possible implementations of the voltage-controlled-bandgap meta-materials, marks the conditions for the occurrence of a magnonic metal behavior in a ferromagnetic film, and outlines how a same unpatterned film can be reversibly turned from a magnonic metal to a magnonic insulator
A sinusoidal magnetization distribution as an original way to generate a versatile magnonic crystal for magnon propagation
No full textThe manipulation of the magnetization in a film at the nanoscale is one of the best means for controlling spin-wave propagation in real time. In 3D Magnonics, the vertical or interfacial interaction with patterned layers can make the film magnetization depart from uniformity, which, in general, can introduce new spin-wave modes in the film, hence additional degrees of freedom for signal manipulation. In this paper, we suggest a sinusoidal distribution for the magnetization as an original and effective way to generate a magnonic crystal and control its magnon dynamics. Along with a uniform bias field, we introduce in the film layer a sinusoidal bias field, simulating the vertical/interfacial interaction with other layers: after relaxation, the film magnetization assumes a sinusoidal equilibrium distribution. Using micromagnetic simulations followed by Fourier analysis, we show how to control the magnon dynamics by tuning the magnetization undulation amplitude and symmetry. We compute the magnon dispersion curves and space profiles, we show the occurrence of new degrees of freedom for signal manipulation and the rise of localized and stationary magnon modes. We highlight the physical mechanisms governing the occurrence and variation of the frequency-gap at zone-boundary. Finally, we indicate how to practically implement a sinusoidal field (and consequent magnetization) when the vertical coupling is the inverse magnetoelastic interaction between ferroelectric and ferromagnetic films. Our results suggest a new mechanism for controlling magnon propagation, which appears extremely appealing for its really wide range of tunable effects on their dynamics, particularly interesting in the engineering of signal filtering, information storage and delivery, and sensing activity
A sinusoidal magnetization distribution as an original way to generate a versatile magnonic crystal for magnon propagation
No full textThe manipulation of the magnetization in a film at the nanoscale is one of the best means for controlling spin-wave propagation in real time. In 3D Magnonics, the vertical or interfacial interaction with patterned layers can make the film magnetization depart from uniformity, which, in general, can introduce new spin-wave modes in the film, hence additional degrees of freedom for signal manipulation. In this paper, we suggest a sinusoidal distribution for the magnetization as an original and effective way to generate a magnonic crystal and control its magnon dynamics. Along with a uniform bias field, we introduce in the film layer a sinusoidal bias field, simulating the vertical/interfacial interaction with other layers: after relaxation, the film magnetization assumes a sinusoidal equilibrium distribution. Using micromagnetic simulations followed by Fourier analysis, we show how to control the magnon dynamics by tuning the magnetization undulation amplitude and symmetry. We compute the magnon dispersion curves and space profiles, we show the occurrence of new degrees of freedom for signal manipulation and the rise of localized and stationary magnon modes. We highlight the physical mechanisms governing the occurrence and variation of the frequency-gap at zone-boundary. Finally, we indicate how to practically implement a sinusoidal field (and consequent magnetization) when the vertical coupling is the inverse magnetoelastic interaction between ferroelectric and ferromagnetic films. Our results suggest a new mechanism for controlling magnon propagation, which appears extremely appealing for its really wide range of tunable effects on their dynamics, particularly interesting in
the engineering of signal filtering, information storage and delivery, and sensing activity
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
New species in the bioremediation of sea farming impact: drug tolerance and detoxification capabilities towards xenobiotics
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