Lifting properties in operator ranges

Given a bounded positive linear operator A on a Hilbert space H we consider the semi-Hilbertian space (H, _A), where _A =. On the other hand, we consider the operator range R(A^1/2) with its canonical Hilbertian structure, denoted by R(A^1/2). In this paper we explore the relationship between different types of operators on (H, _A) with classical subsets of operators on R(A^1/2), like Hermitian, normal, contractions, projections, partial isometries and so on. We extend a theorem by M. G. Krein on symmetrizable operators and a result by M. Mbekhta on reduced minimum modulus.Fil: Arias, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Instituto Argentino de Matemática Alberto Calderón; ArgentinaFil: Corach, Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Instituto Argentino de Matemática Alberto Calderón; ArgentinaFil: Gonzalez, Maria Celeste. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Instituto Argentino de Matemática Alberto Calderón; Argentin

On complementable operators in the sense of T. Ando

Consider an operator A :H→K between Hilbert spaces and closed subspaces S ⊂ H and T ⊂ K. If there exist projections E on H and F on K such that R(E) =S, R(F) =T and AE=F∗A then A is called (S, T)-complementable. The origin of this notion comes from the idea of T. Ando of defining Schur complements in terms of operators. In this paper we present some characterizations of these triples (A, S, T) and applications to bilateral Schur complements and generalized Wiener-Hopf operators.Fil: Arias, Maria Laura. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Instituto Argentino de Matemática Alberto Calderón; ArgentinaFil: Corach, Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Instituto Argentino de Matemática Alberto Calderón; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería; ArgentinaFil: Maestripieri, Alejandra Laura. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Instituto Argentino de Matemática Alberto Calderón; Argentin

RURAL-URBAN MIGRATION IN BOLIVIA: AN ESCAPE BOAT?

This paper studies rural-urban migration in Bolivia. Domestic migration usually works as an equalization mechanism, in which regions with fewer economic opportunities send migrants to more dynamic regions. We model the migration decision and take into account the possibility of self-selection for computing the returns to migration. We present selectivity corrected quantile regression models for earnings of both migrants and non-migrants in urban and metropolitan areas. We find that migrants receive a premium at low and median quantiles of the urban/metro conditional earnings distribution. This premium is somewhat diminished by a negative selectivity correction for migrants with lower probabilities of migration.

Properties of Regions Forming the FeII Emission Lines in Be Stars

We study FeII and Balmer hydrogen emission lines observed simultaneously of 18 southern Be stars. We use the self-absorption-curve method (SAC) to determine the optical depth regime of FeII emission lines and to derive first insights on the physical properties of their forming regions.Comment: Societe Francaise d'Astronomie et d'Astrophysique, France (2005

A sociedade do conhecimento na Argentina. Percepções de acadêmicos, empresários e funcionários

La sociedad del conocimiento, como motor del desarrollo económico y social, está presente en el imaginario de los académicos, empresarios y funcionarios gubernamentales. Esto implica que globalmente se impone la necesidad de que la academia contribuya con el sector productivo y que el Estado facilite esta integración. El presente trabajo trata de develar las percepciones de miembros de la academia, la empresa y el Estado argentinos acerca de los alcances de la triangulación, es decir , las relaciones entre los tres vértices: el sistema científico-tecnológico, el sistema productivo y el sistema estatal para cooperar conjuntamente. Asimismo busca sacar a la luz su posición con respecto a la supuesta mercantilización del conocimiento y el papel del Estado como intermediario y proveedor de políticas científicas.The knowledge society, as an engine of economic and social development, is present in the minds of academics, entrepreneurs and government officials. This implies that globally there is a need for the academy to contribute with the productive sector and for the State to support this integration. This paper tries to reveal the perceptions of members of the academy, the enterprises and the Argentinian State on the scope of this triangulation; which means the relationship between the three vertex: the scientific and technological system, the productive system and the governmental system to cooperate in conjunction. It also seeks to expose its position on the alleged commodification of knowledge and the state’s role as an intermediary and provider of scientific policies.A sociedade do conhecimento, como um motor de desenvolvimento econômico e social, está presente no imaginário dos acadêmicos, empresários e funcionários do governo. Isto implica que, globalmente, há uma necessidade para a academia de contribuir para o setor produtivo e o Estado fornecer essa integração. Este trabalho tenta revelar as percepções dos membros da academia, das empresas e do Estado argentino no âmbito dos alcances da triangulação, ou seja, a relação entre os três vértices: o sistema científico-tecnológico, o sistema produtivo e o sistema estatal a cooperar conjuntamente. Mesmo assim, procura trazer à luz sua postura no que diz respeito da alegada mercantilização do conhecimento e do papel do Estado como intermediário e fornecedor de política científicaFil: Arias, Maria Fernanda. Universidad Nacional de San Martín. Escuela de Humanidades. Centro de Estudios Interdisciplinarios en Educación, Cultura y Sociedad; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

Increasing barcode medication administration (BCMA) to improve patient safety

Purpose: Medication errors frequently have catastrophic consequences for the patients, and place an enormous financial burden on our health care system. The Institute of Medicine Report, “To Err is Human” published in 1999, estimated that medication errors account for more than 7,000 deaths annually, and many of them are preventable. Errors may happen at different stages of the medication use process, but most commonly take place at the point of administration. Barcode medication administration (BCMA) technology requires the nurse to scan the patient’s wrist band to ascertain the correct patient, and the medication barcode, to verify the right medication, dose, route and time, which are recognized as the “Five Rights” of medication administration. BCMA implementation has demonstrated to significantly reduce errors at the point of administration. The Leapfrog Group, a national organization and coalition of public and private purchasers of employee health coverage has developed a national standard for BCMA which requires both, patient and medication scans in 95% of medication administrations in units where this technology has been implemented. The purpose of this study was to increase the rate of patient and medication scanning to meet the Leapfrog standard. Methods: A prospective review of medication and patient scanning compliance was conducted for a 16 month period from January 2018 to April 2019. Two computer reports were generated monthly. One report was used to identify the number of medication doses administered and the percentage of medications and patients scanned by hospital unit. The second report was used to identify the medications and patients not scanned, and staff members scanning less than 50% of the medications or patients. Each unit leader was provided instructions on how to generate the scanning report for their area. Compliance data was presented to the hospital leadership and to the Medication Safety Committee where barriers to compliance were identified and discussed. Committee members were tasked with disseminating the information and educating the staff. Areas of the hospital with low scanning rates were toured, and opportunities for improvement were identified and addressed. Targeted one-on-one education was provided to staff members with low compliance. Findings: During the study period a total of 1,035,951 medications doses were administered. Hospital-wide medication and patient scanning compliance increased from 82% to 92% and from 83% to 93% respectively, resulting in a 12% improvement in the process or 124, 314 additional doses scanned. Barriers to scanning identified included insufficient number of scanners in the Emergency Department and medication barcodes not scanning properly. Discussion/Conclusions: Barcode medication scanning is a safety measure that has shown to reduce medication errors at the point of administration. Interventions such as raising awareness of the importance of this measure, securing leadership support, targeted individual staff education, and identifying and addressing barriers to scanning are tools that can be successfully implemented to in-crease compliance. Implications for Practice: 1. Medication errors can have catastrophic consequences for patients and place a huge financial burden on healthcare systems. 2. Barcode medication administration can reduce medication errors

Familial Traces: Photography and Trauma in Doris Lessing’s Auto/biographical Narratives

This paper deals with the use of photography in Doris Lessing’s auto/biographical writings, particularly, Under My Skin: Volume One of My Autobiography, to 1949 (1994), and more recently, Alfred and Emily (2008). Both works deal with Lessing’s personal and collective trauma: her strained relationship with her mother, and her struggle for recognition, as well as the pernicious influence the Great War had upon Lessing’s parents, and by extension, upon Lessing herself. Trauma studies, as seen in the winter-spring 2008 special double issue of Doris Lessing Studies entirely devoted to trauma in Lessing’s work, have provided nuanced readings into Lessing’s take on trauma in her production. Although the (im)possibility of recovery from trauma has become a recent focus of interest in Lessing studies, as in the double issue, there has been no specific reference to the relevance of photography and/in trauma. The aim of this paper is to examine personal photographs as relevant cultural documents in Lessing’s auto/biographical texts, and her engagement with personal and collective trauma, by paying attention to a neglected aspect: the use of family photography.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech