Resonantly Tunable Majorana Polariton in a Microwave Cavity

We study the spectrum of a one-dimensional Kitaev chain placed in a microwave cavity. In the off-resonant regime, the frequency shift of the cavity can be used to identify the topological phase transition of the coupled system. In the resonant regime, the topology of the system can be controlled via the microwave cavity occupation and, moreover, for a large number of photons (classical limit), the physics becomes similar to that of periodically-driven systems (Floquet insulators). We also analyze numerically a finite chain and show the existence of a degenerate subspace in the presence of the cavity that can be interpreted as a \textit{Majorana polariton}.Comment: 11 pages, 6 figure

Photon assisted braiding of Majorana fermions in a cavity

We study the dynamical process of braiding Majorana bound states in the presence of the coupling to photons in a microwave cavity. We show theoretically that the $\pi/4$ phase associated with the braiding of Majoranas, as well as the parity of the ground state are imprinted into the photonic field of the cavity, which can be detected by dispersive readouts techniques. These manifestations are purely dynamical, they occur in the absence of any splitting of the MBS that are exchanged, and they disappear in the static setups studied previously. Conversely, the cavity can affect the braiding phase, which in turn should allow for cavity controlled braiding.Comment: 4.5 pages+7 pages supplementary material, 4 figure

A Windows Phone 7 Oriented Secure Architecture for Business Intelligence Mobile Applications

This paper present and implement a Windows Phone 7 Oriented Secure Architecture for Business Intelligence Mobile Application. In the developing process is used a Windows Phone 7 application that interact with a WCF Web Service and a database. The types of Business Intelligence Mobile Applications are presented. The Windows mobile devices security and restrictions are presented. The namespaces and security algorithms used in .NET Compact Framework for assuring the application security are presented. The proposed architecture is showed underlying the flows between the application and the web service.Security, Secure Architecture, Mobile Applications, Business Intelligence, Web Service

Acoustic phonons and strain in core/shell nanowires

We study theoretically the low-energy phonons and the static strain in cylindrical core/shell nanowires (NWs). Assuming pseudomorphic growth, isotropic media, and a force-free wire surface, we derive algebraic expressions for the dispersion relations, the displacement fields, and the stress and strain components from linear elasticity theory. Our results apply to NWs with arbitrary radii and arbitrary elastic constants for both core and shell. The expressions for the static strain are consistent with experiments, simulations, and previous analytical investigations; those for phonons are consistent with known results for homogeneous NWs. Among other things, we show that the dispersion relations of the torsional, longitudinal, and flexural modes change differently with the relative shell thickness, and we identify new terms in the corresponding strain tensors that are absent for uncapped NWs. We illustrate our results via the example of Ge/Si core/shell NWs and demonstrate that shell-induced strain has large effects on the hole spectrum of these systems.Comment: 21 pages, 5 figure

Retrospective Study Comparing the Efficacy of Epidural Analgesia to Perineural Nerve Catheter Analgesia for Postoperative Pain Management in Pediatric Patients Following a Unilateral Lower Limb Surgery

A Thesis submitted to The University of Arizona College of Medicine - Phoenix in partial fulfillment of the requirements for the Degree of Doctor of Medicine.The primary aim of this study was to determine if peripheral nerve catheterization offers a better analgesic alternative than an epidural catheter in pediatric patients who undergo a unilateral lower limb surgery. Postoperative pain management is not only important in promoting comfort to patients in pain but can also promote rehabilitation and optimal healing. Multimodal analgesia is the use of multiple modalities to treat patients’ pain; two of these methods include epidural and peripheral catheters. Epidural catheter infusions offer global analgesia from the waist to both of the lower extremities. Epidurals do pose side effect risks that include infection, urinary retention, hypotension, pruritus, nausea/vomiting, headaches, backaches, and respiratory depression. Peripheral nerve infusions can act more locally at a targeted area and deliver carefully dosed anesthetics to nerve fibers that can hinder the sensory function of nerves while preserving the motor function, allowing for earlier rehabilitation. The use of multimodal analgesia as a postoperative pain management plan can still vary greatly from clinician to clinician, so it would be of benefit to determine which subset of patients may benefit from having a catheter infusion as part of their treatment regimen and whether a peripheral infusion is superior to an epidural infusion. This was a retrospective study that looked at 65 pediatric patients, ages 5-15, that received either an epidural infusion (n = 53) or a peripheral nerve block infusion (n = 12) for a unilateral lower limb operation. Their charts were analyzed to determine pain scores, PCA usage, PRN morphine equivalents, total morphine equivalents, adverse events, length of catheter use, and length of hospital stay, amongst other things. The epidural group was used as the control for the study and the data analysis revealed that the patients that received a peripheral infusion had 43% higher (p = 0.35) pain scores, received 98% less (p = 0.001) continuous morphine equivalents in their infusions, required 31% less (p = 0.34) PRN morphine equivalents, had 68% less (p = 0.049) PCA usage rates, received 32% less (p = 0.39) total morphine equivalents, had 30% less (p = 0.45) adverse effects, and left the hospital 0.54 days earlier (p = 0.13) on average when compared to patients that received continuous epidural infusions. The data indicates that although the pains scores were higher for the peripheral infusion patients, these patients required less opioid exposure, which indicates relatively acceptable pain management for the patient and healthcare team while also allowing for the opportunity to engage in rehabilitation and avoid the global effects of epidural infusions and the associated increased profile risk. The conclusion of this study suggests that continuous peripheral infusions are a valid alternative to epidural infusions for pediatric patients that undergo a unilateral lower limb surgery and that a randomized control trial would be warranted to offer more definitive insight.This item is part of the College of Medicine - Phoenix Scholarly Projects 2019 collection. For more information, contact the Phoenix Biomedical Campus Library at [email protected]

SANCTION – VIRTUES AND LIMITATIONS IN EDUCATION

Reward and sanction are reactions of a person or an instance to a behavior that supports, respectively affects norms, values and people that are part of a constituted group (the collective of a classroom that is supervised by a teacher or the school community). If reward is always accompanied by positive affective states which value people and place them in a positive light, sanction, which has the role of correcting by showing that the way things are in the present is wrong becomes a “two blade knife”: it can do good (fix things by showing the right way they need to be done) or wrong (by humiliating the person who is sanctioned, by punishing), depending on how it is designed and used. Our purpose in the present article is to present several considerations on the rather non-educational way in which sanction is used in Romanian schools.sanction, educational sanction, non-educational sanction