DxR Case Study

FROM THE PREFACE TO THE CASE STUDY: In July 1998, Hurley Myers, President of DxR Development Group, stared at the gray plastoid brain lying on the desk before him. A prop for the medical multimedia software his firm developed, it also was a suitable metaphor for the many critical decisions that he faced. Complicating these decisions was his uncertainty regarding the intentions of his partner and biggest customer, a large pharmaceutical company. For the next six months, the customer had the option either to buy DxR out or to release it from its contractual obligations. If it chose the former, it might do so just to obtain the intellectual property rights controlled by DxR. This option might permit DxR to start up again in the medical education marketplace, but without its biggest customer and much of its intellectual property. With either the restart or release option, DxR would need to adapt to the major change in orientation. The change would encourage DxR to identify new customers and new product opportunities and create new strategic alliances. If any of these options resulted in further growth, Myers knew that some of his management team felt more rigorous procedures were necessary for software development and human resource management. Myers also felt that DxR\u27s pharmaceutical partner needed to be making greater use of the Internet for marketing, and perhaps distributing, DxR\u27s products

Anomalous dispersion of optical phonons at the neutral-ionic transition: Evidence from diffuse X-ray scattering

Diffuse X-ray data for mixed stack organic charge-transfer crystals approaching the neutral-ionic phase transition can be quantitatively explained as due to the softening of the optical phonon branch. The interpretation is fully consistent with vibrational spectra, and underlines the importance of electron-phonon coupling in low-dimensional systems with delocalized electrons.Comment: 4 pages, 4 figure

Reflected rough differential equations

In this paper, we study reflected differential equations driven by continuous paths with finite $p$-variation ($1\le p<2$) and $p$-rough paths ($2\le p<3$) on domains in Euclidean spaces whose boundaries may not be smooth. We define reflected rough differential equations and prove the existence of a solution. Also we discuss the relation between the solution to reflected stochastic differential equation and reflected rough differential equation when the driving process is a Brownian motion.Comment: This will appear in Stochastic Processes and their applications. doi:10.1016/j.spa.2015.03.00

Impossibility of distant indirect measurement of the quantum Zeno effect

We critically study the possibility of quantum Zeno effect for indirect measurements. If the detector is prepared to detect the emitted signal from the core system, and the detector does not reflect the signal back to the core system, then we can prove the decay probability of the system is not changed by the continuous measurement of the signal and the quantum Zeno effect never takes place. This argument also applies to the quantum Zeno effect for accelerated two-level systems, unstable particle decay, etc.Comment: 14 pages, 2 figure