Equity problems in the honduran educative system

Los actuales esfuerzos por mejorar la equidad de la educación en América Latina en general y en Honduras en particular, en el contexto de las profundas desigualdades sociales prevalecientes, se enfocan en la búsqueda de intervenciones que, gestionando los escasos recursos disponibles, disminuyan las brechas en el acceso y el desempeño escolar asociados a las diferencias por estratos socioeconómicos, grupos étnicos, género, o por región de residencia de los estudiantes. El presente artículo plantea una panorámica de las brechas de equidad que padece el sistema educativo hondureño, tanto en relación con el acceso como respecto a los niveles de aprendizaje alcanzados por los alumnos en función del estrato socioeconómico del que provienen, de la región (urbano-rural) en que residen y del género o grupo étnico al que pertenecen. La gran conclusión es que, tal como viene operando el sistema educativo hondureño, está reproduciendo e incluso acentuando, las amplias brechas sociales preexistent

Empty spaces and the value of symbols: Estonia's 'war of monuments' from another angle

Taking as its point of departure the recent heightened discussion surrounding publicly sited monuments in Estonia, this article investigates the issue from the perspective of the country's eastern border city of Narva, focusing especially upon the restoration in 2000 of a 'Swedish Lion' monument to mark the 300th anniversary of Sweden's victory over Russia at the first Battle of Narva. This commemoration is characterised here as a successful local negotiation of a potentially divisive past, as are subsequent commemorations of the Russian conquest of Narva in 1704. A recent proposal to erect a statue of Peter the Great in the city, however, briefly threatened to open a new front in Estonia's ongoing 'war of monuments'. Through a discussion of these episodes, the article seeks to link the Narva case to broader conceptual issues of identity politics, nationalism and post-communist transition

The effect of sodium bicarbonate administration on the vasopressor effect of high-dose epinephrine during cardiopulmonary resuscitation in swine,

Sodium bicarbonate is administered during cardiopulmonary resuscitation (CPR) for the treatment of systemic acidemia. However, the effect of administering standard-dose sodium bicarbonate on the vasopressor effect of epinephrine is unknown. This study compared the effects of sodium bicarbonate or normal saline on the vasopressor effect of epinephrine in 18 pigs. After 10 minutes of unassisted ventricular fibrillation, CPR was started using a pneumatic chest compression device. Two minutes after the start of CPR, sodium bicarbonate (1 mEq/kg) or normal saline (1 mL/kg) was administered into the right ventricle followed 1 minute later by epinephrine (0.2 mg/kg). Defibrillation was attempted at 8 minutes of CPR (18 minutes of ventricular fibrillation). Results demonstrated no significant differences in aortic systolic, aortic diastolic, or coronary perfusion pressure (CPP) between the two groups (1 minute after epinephrine, CPP was 22.6 +/- 13.3 mm Hg versus 21.1 +/- 20.7 mm Hg for the sodium bicarbonate and normal saline groups, respectively). However, when the data were stratified according to pH 7.4, the peak change in CPP was 12.7 +/- 21 mm Hg when pH 7.4 (P = .33). Resuscitation was also similar between the two groups (two of nine for sodium bicarbonate and one of nine for normal saline). In conclusion, the standard recommended dose of sodium bicarbonate did not alter the vasopressor effect of epinephrine or resuscitation compared with normal saline in this closed chest model of ventricular fibrillation and CPR.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/30609/1/0000246.pd

Limited morbidity and possible radiographic benefit of C2

Background: The study aims to evaluate differences in alignment and clinical outcomes between surgical cervical deformity (CD) patients with a subaxial upper-most instrumented vertebra (UIV) and patients with a UIV at C2. Use of CD-corrective instrumentation in the subaxial cervical spine is considered risky due to narrow subaxial pedicles and vertebral artery anatomy. While C2 fixation provides increased stability, the literature lacks guidelines indicating extension of CD-corrective fusion from the subaxial spine to C2. Methods: Included: operative CD patients with baseline (BL) and 1-year postop (1Y) radiographic data, cervical UIV ≥ C2. Patients were grouped by UIV: C2 or subaxial (C3-C7) and propensity score matched (PSM) for BL cSVA. Mean comparison tests assessed differences in BL and 1Y patient-related, radiographic, and surgical data between UIV groups, and BL-1Y changes in alignment and clinical outcomes. Results: Following PSM, 31 C2 UIV and 31 subaxial UIV patients undergoing CD-corrective surgery were included. Groups did not differ in BL comorbidity burden (P=0.175) or cSVA (P=0.401). C2 patients were older (64 Conclusions: C2 UIV patients showed similar cervical range of motion and baseline to 1-year functional outcomes as patients with a subaxial UIV. C2 UIV patients also showed greater baseline to 1-year horizontal gaze improvement and had complication profiles similar to subaxial UIV patients, demonstrating the radiographic benefit and minimal functional loss associated with extending fusion constructs to C2. In the treatment of adult cervical deformities, extension of the reconstruction construct to the axis may allow for certain clinical benefits with less morbidity than previously acknowledged

Impact of relative dose intensity (RDI) in CHOP combined with rituximab (R-CHOP) on survival in diffuse large B-cell lymphoma

<p>Abstract</p> <p>Background</p> <p>Recently, maintaining higher relative dose intensity (RDI) of chemotherapeutic drugs has become a widespread practice in an attempt to achieve better outcomes in the treatment of aggressive lymphoma. The addition of rituximab to chemotherapy regimens has significantly improved outcome in diffuse large B-cell lymphoma (DLBL). However, it is unknown if higher RDI in chemotherapy when combined with rituximab leads to a better outcome in aggressive B-cell lymphoma.</p> <p>Methods</p> <p>We retrospectively evaluated the impact of the RDI of initial chemotherapy (consisting of cyclophosphamide, doxorubicin, vincristine and prednisolone with rituximab (R-CHOP) on outcome in 100 newly diagnosed DLBL patients.</p> <p>Results</p> <p>A multivariate Cox regression model showed that RDI trended towards a significant association with mortality [hazard ratio per 0.1 of RDI = 0.8; 95% confidence interval 0.6–1.0; <it>P </it>= 0.08]. Additionally, on multivariate logistic analysis, advanced age was a significant factor for reduced RDI.</p> <p>Conclusion</p> <p>Our data suggest that in DLBL patients, mortality was affected by RDI of R-CHOP as the initial treatment, and the retention of a high RDI could therefore be crucial.</p

Crystallization of strongly interacting photons in a nonlinear optical fiber

Understanding strongly correlated quantum systems is a central problem in many areas of physics. The collective behavior of interacting particles gives rise to diverse fundamental phenomena such as confinement in quantum chromodynamics, phase transitions, and electron fractionalization in the quantum Hall regime. While such systems typically involve massive particles, optical photons can also interact with each other in a nonlinear medium. In practice, however, such interactions are often very weak. Here we describe a novel technique that allows the creation of a strongly correlated quantum gas of photons using one-dimensional optical systems with tight field confinement and coherent photon trapping techniques. The confinement enables the generation of large, tunable optical nonlinearities via the interaction of photons with a nearby cold atomic gas. In its extreme, we show that a quantum light field can undergo fermionization in such one-dimensional media, which can be probed via standard photon correlation measurements