MAXIMALITY OF LOGIC WITHOUT IDENTITY

Lindström’s theorem obviously fails as a characterization of first-order logic without identity ( L − ωω ). In this note, we provide a fix: we show that L − ωω is a maximal abstract logic satisfying a weak form of the isomorphism property (suitable for identity-free languages and studied in [11]), the Löwenheim–Skolem property, and compactness. Furthermore, we show that compactness can be replaced by being recursively enumerable for validity under certain conditions. In the proofs, we use a form of strong upwards Löwenheim–Skolem theorem not available in the framework with identity

Non Abelian TQFT and scattering of self dual field configuration

A non-abelian topological quantum field theory describing the scattering of self-dual field configurations over topologically non-trivial Riemann surfaces, arising from the reduction of 4-dim self-dual Yang-Mills fields, is introduced. It is shown that the phase space of the theory can be exactly quantized in terms of the space of holomorphic structures over stable vector bundles of degree zero over Riemann surfaces. The Dirac monopoles are particular static solutions of the field equations. Its relation to topological gravity is discussed.Comment: 13 pages, Late

Spatial variation in educational quality in Colombia based on the phenomena of agglomeration and academic segregation

This study seeks to measure the degree of agglomeration of educational quality in Colombia, based on the nonsocialization of the population that exhibits low educational quality, with the population that exhibits high educational quality, and thus determine how such agglomeration affects the phenomenon of academic segregation. To this end, we perform a spatial analysis of the educational quality in Colombia and of variables that may influence the phenomenon of educational agglomeration. The level of agglomeration in educational quality in Colombia is demonstrated by the calculation of the Moran’s Index, in which a result of 0.62 was obtained. High educational quality is concentrated in the Andean region, while low educational quality is agglomerated in the periphery of the country, in areas such as the Pacific region. A spatial regression model was carried out to measure the dependence of municipalities on their neighbors, and to determine the main socio-economic factors affecting the phenomenon of educational agglomeration in Colombia, finding that living conditions, unsatisfied basic needs and fiscal transparency all have an impact on the educational quality of the municipalities. It is also found that the number of homicides in the municipalities does not seem to have a significant relationship with education

Medición de la autorregulación cerebral derivada de la espectroscopia de infrarrojo cercano en recién nacidos: de la herramienta de investigación al monitoreo multimodal junto a la cama

Cerebral autoregulation (CAR), the ability of the human body to maintain cerebral blood flow (CBF) in a wide range of perfusion pressures, can be calculated by describing the relation between arterial blood pressure (ABP) and cerebral oxygen saturation measured by near-infrared spectroscopy (NIRS). In literature, disturbed CAR is described in different patient groups, using multiple measurement techniques and mathematical models. Furthermore, it is unclear to what extent cerebral pathology and outcome can be explained by impaired CAR

Boletín meteorológico anual C.I. Nataima 1995

La estación Agrometeorológica "Nataima", ubicada en el Centro de Investigación del mismo nombre, en el municipio de El Espinal, a una altitud de 431 msnm. y con coordenadas geográficas: 42° 12' Latitud Norte y 74° 56' Longitud Oeste, cuenta con registros meteorológicos completos de 24 años, en una base de datos actualizada hasta diciembre de 1995. Los registros climáticos reunidos en este boletín corresponden a las observaciones meteorológicas obtenidas durante el año de 1995, comparados con los registros históricos de los 24 años; se presenta un análisis de la probabilidad de ocurrencia de lluvias, que sirve para estimar o predecir lluvias para el presente año. Finalmente se compara el comportamiento de la precipitación del año 95 y la evapotranspiración potencial medida

Parents’ Acute Illnesses, Hospitalizations, and Medication Changes During the Difficult First Year After Infant or Child NICU/PICU Death

Infant/child death is described as a most stressful life event; however, there are few reports of effects on parent physical health during the first year after the death. The study\u27s purpose is to examine the patterns of parent acute illnesses, hospitalizations, and medication changes over 1 to 13 months after neonatal intensive care unit (NICU) or pediatric intensive care unit (PICU) infant/child death in 3 racial/ethnic groups. METHODS: Secondary analyses were conducted with longitudinal data on parent health and functioning 1 to 13 months after infant/child NICU/PICU death. Parents (176 mothers, 73 fathers; 44% Hispanic, 35% black non-Hispanic, and 21% white non-Hispanic) of deceased infants/children were recruited from 4 children\u27s hospitals and state death records. Inclusion criteria-parents understood English or Spanish and had a deceased neonate/child ≤ 18. Exclusion criteria -deceased newborn from multiple gestation pregnancy, child in foster care, child\u27s injury due to suspected abuse, or parent death in illness/injury event. Parents reported numbers and types of acute illnesses, hospitalizations, and medication changes 1 to 13 months postdeath. RESULTS: Parents\u27 acute illnesses, hospitalizations, and medication changes were greatest between months 1 and 6, with relative quiescence in months 7 to 10, and an increase in months 11 to 13. Mothers (aged 32 ± 7.8 years) reported 300 acute illnesses (primarily colds/flu, headaches, anxiety/depression, and infections) and 89 hospitalizations (primarily infections, chest pain, and gastrointestinal problems). Fathers (aged 37 ± 8.8 years) reported 104 acute illnesses (colds/flu and headaches) and 9 hospitalizations. CONCLUSION: After infant/child NICU/PICU death, mothers had greater morbidity than fathers, with no significant differences by race/ethnicity. Parents\u27 health needs to be monitored in months 1 to 6 and months 11 to 13, and interventions targeted to parents in these months

Non Abelian BF theories with sources and 2-D gravity

We study the interaction of non-Abelian topological $BF$ theories defined on two dimensional manifolds with point sources carrying non-Abelian charges. We identify the most general solution for the field equations on simply and multiply connected two-manifolds. Taking the particular choice of the so-called extended Poincar\'e group as the gauge group we discuss how recent discussions of two dimensional gravity models do fit in this formalism.Comment: 20 pages, Latex, To appear in Phys Rev D5

Dos nuevas especies de Zapatella (Hym., Cynipidae) para Colombia que producen agallas en ramas de Quercus humboldtii (Fagaceae)

Se describen dos nuevas especies del género Zapatella para Colombia: Z. inflata Pujade-Villar & Rodríguez n. sp. y Z. tuberosa Pujade- Villar & Caicedo n. sp. Ambas corresponden a formas agámicas que producen agallas en ramas de pequeño tamaño sobre Q. humboldtii . Se exponen e ilustran los caracteres morfológicos que definen estas nuevas especies

Interrelationship Between Broadband NIRS Measurements of Cerebral Cytochrome C Oxidase and Systemic Changes Indicates Injury Severity in Neonatal Encephalopathy

Perinatal hypoxic ischaemic encephalopathy (HIE) is associated with severe neurodevelopmental problems and mortality. There is a clinical need for techniques to provide cotside assessment of the injury extent. This study aims to use non-invasive cerebral broadband near-infrared spectroscopy (NIRS) in combination with systemic physiology to assess the severity of HIE injury. Broadband NIRS is used to measure the changes in haemodynamics, oxygenation and the oxidation state of cytochrome c oxidase (oxCCO). We used canonical correlation analysis (CCA), a multivariate statistical technique, to measure the relationship between cerebral broadband NIRS measurements and systemic physiology. A strong relationship between the metabolic marker, oxCCO, and systemic changes indicated severe brain injury; if more than 60 % of the oxCCO signal could be explained by the systemic variations, then the neurodevelopmental outcome was poor. This boundary has high sensitivity and specificity (100 and 83 %, respectively). Broadband NIRS measured concentration changes of the oxidation state of cytochrome c oxidase has the potential to become a useful cotside tool for assessment of injury severity following hypoxic ischaemic brain injury