Retrospective analysis of decision-making in post-traumatic posterior shoulder instability

Purpose This study aims to assess the clinical outcomes in the management of post-traumatic posterior shoulder instability (PSI) with a focus on the decision-making process for operative and conservative treatments. Introduction PSI can result from traumatic events, impacting a patient’s quality of life. This study delves to better indicate decision-making for operative indication of post-traumatic PSI patients. Methods Patients who sustained posterior shoulder dislocations were selected from a single surgeon’s database within a five-year period. Cases of degenerative or genetically caused PSI were excluded, resulting in a cohort of 28. Patients were initially managed conservatively but indicated for surgery if they were unable to actively stabilize the shoulder or exhibited bony or cartilage defects confirmed through imaging. If conservative treatment did not yield significant improvements, it was classified as a failure, and operative intervention was recommended. The WOSI Score, ROM, and X-ray were employed to evaluate the success of treatment. Results Out of the 28 patients, 11 received conservative, seven immediate surgeries, and ten transitioned from conservative to operative treatment. The overall success rate showed 25 good to excellent results. In the persistent conservative treatment group, the initial WOSI score was significantly lower compared to the operative group. Conclusion This study suggests that post-traumatic PSI can be successfully managed conservatively with initial low clinical symptoms (low WOSI score) and in the absence of absolute indications for operative treatment. When surgery is necessary, arthroscopic procedures proved effective in achieving good to excellent results in 16 out of 17 cases

Separability of Two-Party Gaussian States

We investigate the separability properties of quantum two-party Gaussian states in the framework of the operator formalism for the density operator. Such states arise as natural generalizations of the entangled state originally introduced by Einstein, Podolsky, and Rosen. We present explicit forms of separable and nonseparable Gaussian states.Comment: Brief Report submitted to Physical Review A, 4 pages, 1 figur

Nonlocality of Two-Mode Squeezing with Internal Noise

We examine the quantum states produced through parametric amplification with internal quantum noise. The internal diffusion arises by coupling both modes of light to a reservoir for the duration of the interaction time. The Wigner function for the diffused two-mode squeezed state is calculated. The nonlocality, separability, and purity of these quantum states of light are discussed. In addition, we conclude by studying the nonlocality of two other continuous variable states: the Werner state and the phase-diffused state for two light modes.Comment: 7 pages, 5 figures, submitted to PR

A CMOS 0.8- µm transistor-only 1.63-MHz switched-current bandpass ΣΔ modulator for AM signal A/D conversion

This paper presents a CMOS 0.8-/spl mu/m switched-current (SI) fourth-order bandpass /spl Sigma//spl Delta/ modulator (BP-/spl Sigma//spl Delta/M) IC capable of handling signals up to 1.63 MHz with 105-bit resolution and 60-mW power consumption from a 5-V supply voltage. This modulator Is intended for direct A/D conversion of narrow-band signals within the commercial AM band, from 530 kHz to 1.6 MHz. Its architecture is obtained by applying a low-pass-to-bandpass transformation (z/sup -1//spl rarr/-z/sup -2/) to a 1-bit second-order low-pass /spl Sigma//spl Delta/ modulator (LP-/spl Sigma//spl Delta/M). The design of basic building blocks is based upon a detailed analysis of the influence of SI errors on the modulator performance, followed by design optimization. Memory-cell errors have been identified as the dominant ones. In order to attenuate these errors, fully differential regulated-folded cascode memory cells are employed. Measurements show a best SNR peak of 65 dB for signals of 10-kHz bandwidth and an intermediate frequency (IF) of 1.63 MHz. A correct noise-shaping filtering is achieved with a sampling frequency of up to 16 MHz.This work has been supported by the Spanish CICYT Project TIC 97-0580

Информационные технологии в науке, управлении, социальной сфере и медицине. Ч. 1

В сборнике представлен широкий круг исследований учёных, преподавателей, аспирантов, студентов и молодых учёных Томска и ряда других городов России. Сборник посвящён теоретическим и практическим аспектам разработки и применения современных информационных технологий. Особое внимание уделено вопросам математического моделирования и применения информационных технологий в различных предметных областя

Novel amino‐Li resin for water‐based solid‐phase peptide synthesis

We report the first application of a novel amino‐Li resin to water‐based solid‐phase peptide synthesis (SPPS) applying the Smoc‐protecting group approach. We demonstrated that it is a suitable support for the sustainable water‐based alternative to a classical SPPS approach. The resin possesses good swelling properties in aqueous milieu, provides significant coupling sites, and may be applicable to the synthesis of difficult sequences and aggregation‐prone peptides

Nonlocality of a free atomic wave packet

A simple model allows us to study the nonclassical behavior of slowly moving atoms interacting with a quantized field. Atom and field become entangled and their joint state can be identified as a mesoscopic "Schroedinger-cat". By introducing appropriate observables for atom and field and by analyzing correlations between them based on a Bell-type inequality we can show the corresponding nonclassical behavior.Comment: 15 pages, 3 figures. To appear in Physics Letters

Media ethnography

Contents Editorial Thematic Focus: Media Ethnography Media Ethnography and Participation in Online Practices / David Waldecker, Kathrin Englert, Wolfgang Ludwig-Mayerhofer, Oliver Schmidtke The Story is Everywhere. Dispersed Situations in a Literary Role Play Game / Wolfgang Reißmann Co-operation and/as Participant Observation: Reflections on Ethnographic Fieldwork in Morocco / Simon Holdermann Ethnomethodological Media Ethnography: Exploring Everyday Digital Practices in Families with Young Children / Clemens Eisenmann, Jan Peter, Erik Wittbusch Cooperation and Difference. Camera Ethnography in the Research Project ‘Early Childhood and Smartphone’ / Bina E. Mohn, Pip Hare, Astrid Vogelpohl, Jutta Wiesemann Reports Coordinations, or Computing is Work / Sebastian Gießman

Quantum characterization of bipartite Gaussian states

Gaussian bipartite states are basic tools for the realization of quantum information protocols with continuous variables. Their complete characterization is obtained by the reconstruction of the corresponding covariance matrix. Here we describe in details and experimentally demonstrate a robust and reliable method to fully characterize bipartite optical Gaussian states by means of a single homodyne detector. We have successfully applied our method to the bipartite states generated by a sub-threshold type-II optical parametric oscillator which produces a pair of thermal cross-polarized entangled CW frequency degenerate beams. The method provide a reliable reconstruction of the covariance matrix and allows to retrieve all the physical information about the state under investigation. These includes observable quantities, as energy and squeezing, as well as non observable ones as purity, entropy and entanglement. Our procedure also includes advanced tests for Gaussianity of the state and, overall, represents a powerful tool to study bipartite Gaussian state from the generation stage to the detection one