Spontaneous grating formation in thin light-sensitive AgCl–Ag films at linear P/S-polarization of a laser beam

We investigated the development of spontaneous gratings arising in light-sensitive waveguide AgCl–Ag films on glass substrates at various cases of linear polarization of the single inducing laser beam. The cause of such a grating development is the appearance of an interference field created by the summation of the incident beam and scattered waveguide TE- and TM-modes. Positive feedback in grating growth is provided by Wood’s anomalies taking place for all the gratings, and the simultaneous development of many microgratings results in their competition. Earlier we found that two-dimensional Bragg’s diffraction seriously affects this competition. This kind of diffraction results in the appearance of secondary dominant gratings. Now we found that at the beam’s polarization, deviated from P-polarization, the appearance of tertiary gratings becomes possible due to the Bragg’s diffraction on secondary dominant gratings instead of this diffraction on primary gratings. The influence of the existence of the first and second steps in two-dimensional diffraction on grating growth is proved by both optical microscopy and complete identification of the modes excited in the substrate and in air (radiative modes in small-angle scattering pattern)

Developing internal medicine subspecialty fellows’ teaching skills: a needs assessment

Abstract Background For academic physicians, teaching represents an essential skill. The proliferation of educator training programs aimed at residents and medical students signals the increasing commitment of training programs to develop teaching skills in their trainees as early as possible. However, clinical fellowships represent an important opportunity to advance training as educators. In addition to enriching the pipeline of future teachers, developing fellows as teachers augments the training experience for more junior trainees and may impact patient care. Fellows’ needs for programs to improve teaching skills have been largely unexplored. Methods We conducted a multi-institutional needs assessment of internal medicine (IM) subspecialty fellows to gauge interest in teaching and improvement of teaching skills. We surveyed IM subspecialty fellows at three academic medical centers about their access to fellow-as-teacher programs and other mechanisms to improve their teaching skills during fellowship. We also elicited their attitudes towards teaching and interest in training related to teaching skills. Results One hundred eighty-three fellows representing 20 programs and nine different subspecialties responded to the survey (48% response rate). The majority of participants (67%) reported having no specific training focused on teaching skills and only 12% reported receiving regular feedback about their teaching during their fellowship. Seventy-nine percent of fellows anticipated teaching to be part of their careers, and 22% planned to participate in medical education scholarship. Fellows reported a strong interest in teaching and programs aimed at improving their teaching skills. Conclusions The majority of fellows reported a lack of mechanisms to advance their teaching skills as fellows, despite anticipating teaching to be an important aspect of their future careers and having strong interest in such programs. Our findings at three academic medical centers confirm a lost opportunity among subspecialty fellowships to accelerate teaching skills development for future educators.https://deepblue.lib.umich.edu/bitstream/2027.42/145709/1/12909_2018_Article_1283.pd

Recurrent Events Analysis in the Presence of Time Dependent Covariates and Dependent Censoring

Recurrent events models have lately received a lot of attention in the literature. The majority of approaches discussed show the consistency of parameter estimates under the assumption that censoring is independent of the recurrent events process of interest conditional on the covariates included into the model. We provide an overview of available recurrent events analysis methods, and present an inverse probability of censoring weighted estimator for the regression parameters in the Andersen-Gill model that is commonly used for recurrent event analysis. This estimator remains consistent under informative censoring if the censoring mechanism is estimated consistently, and generally improves on the naive estimator for the Anderson-Gill model in the case of independent censoring. We illustrate the bias of ad hoc estimators in the presence of informative censoring with a simulation study and provide a data analysis of recurrent lung exacerbations in cystic fibrosis patients when some patients are lost to follow up

Desplazamiento de la cultura. Análisis de las representaciones de la Feria Diagonal Pueyrredon a partir de la propuesta municipal de reforma(s) en el espacio público

El presente artículo surge como propuesta de la Cátedra Metodologías y Prácticas de la Investigación en Cultura de la UNMdP persiguiendo una doble finalidad: como ejercicio de práctica y aproximación a la investigación cualitativa y como estrategia de comprensión de una problemática vigente en la agenda cultural de Mar del Plata, Argentina. A raíz de la amenaza de cierre de la Feria Diagonal de los Artesanos, nos propusimos indagar sobre las representaciones de la comunidad marplatense en relación a dicha Feria para comprender la desafectación y relativa apatía de la ciudadanía ante ese potencial desalojo. Desde un paradigma interpretativo implementamos diversos instrumentos metodológicos que nos permitieron explorar el ideario imperante de los vecinos, los medios y los gestores culturales sobre la Feria. Como resultado conseguimos capitalizar una experiencia de reflexión colectiva en el ámbito académico y comprender la convivencia de representaciones y posiciones diversas en torno a la problemática, las cuales tensionan políticas culturales y obras públicas en el ámbito local en términos de consideración del capital económico o del capital cultural

Identity, immigration and citizenship in northern Cyprus

This study investigates the impact of Turkish ‘settlers’ on conceptions of collective identity in northern Cyprus during the period 1995-2013. It traces the discursive effects of immigration and the citizenship status of populations from Turkey on competing identity narratives in the context of Cyprus’s EU accession by focusing on three distinct empirical domains: political parties, civil society and the print media. Inspired by the conceptual framework of the poststructuralist discourse theory and constructivist readings on nationalism and immigration, the investigation seeks to explain the discursive mechanisms of identity construction and transformation in relation to immigration from Turkey which represents a key element in the narration of identity in northern Cyprus. More specifically, the thesis explores how the presence of populations from Turkey has been framed within the dominant narratives on identity along two antagonistic versions: Turkishness and Cypriotness. Using qualitative methodology based on discourse analysis, the empirical sections trace the continuity and change in these narratives and their framing of the ‘settler issue’ in the course of Cyprus’s EU accession and the ongoing anticipation on part of the Turkish-Cypriot community for eventual membership. The purpose of the investigation is to reveal the logic of securitization within both discourses that compete to attach a meaning onto identity in northern Cyprus. The findings demonstrate that the discursive space of the Turkish-Cypriot community is dominated by these competing, securitised versions of subjectivity and belonging. Traditionally interpreted within the hegemony of Turkishness, the antagonistic reading of immigration and the citizenship status of ‘settlers’ by the subversive Cypriotness discourse also reveals the potential to significantly increase the appeal of alternative visions and projects through securitization. Indeed, the northern Cyprus case testifies that appeal to identity involves much more than a source of self-identification, involving a contestation over autonomy, statehood and purpose. In this sense, the thesis aspires to make a contribution in both empirical and conceptual terms. The investigation of identity politics in relation to Turkish ‘settlers’ provides fascinating empirical findings on Turkish-Cypriot politics and society but also the Turkish-Cypriot perceptions of Turkey which have attracted limited scholarly attention thus far. Placing the investigation within the wider discourse-analytical framework also offers significant insights to complement existing understandings of the political relevance of identity in particularly intriguing migration settings found in unrecognised states but also in other contexts involving similar dynamics such as the presence of a ‘kin’state. The current thesisthus offers a particular aspect of the infamous ‘Cyprus Problem’ but one that points to many ‘bigger’ stories in Europe and beyond

A C‐index for recurrent event data: Application to hospitalizations among dialysis patients

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/144622/1/biom12761.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/144622/2/biom12761_am.pd

The Eyes Have It:A Rheumatologist's View of Uveitis

Uveitis is defined as intraocular inflammation. It is an extra-articular manifestation of many forms of joint disease which include spondyloarthritis, juvenile idiopathic arthritis, and Behcet's disease. Rheumatologists may be asked to consult on patients with uveitis in order to identify an associated systemic illness. Diagnoses such as spndyloarthritis, sarcoidosis, and interstitial nephritis with uveitis are frequently overlooked by referring ophthalmologists. Alternatively rheumatologists may be asked to help manage the immunosuppression including biologics which can be required to treat a subset of patients with uveitis. This review is written to provide rheumatologists with the necessary information to facilitate collaboration in co-managing patients with uveitis. This article is protected by copyright. All rights reserved