We prove a Model Existence Theorem for a fully infinitary logic for metric structures. This resul... more We prove a Model Existence Theorem for a fully infinitary logic for metric structures. This result is based on a generalization of the notions of approximate formulas and approximate truth in normed structures introduced by Henson and studied in different forms by Anderson and Fajardo & Keisler. This theorem extends Henson's Compactness Theorem for approximate truth in normed space structures to infinitary formulas.
El propósito de la investigación es presentar la estrategia utilizada en la creación de Massive O... more El propósito de la investigación es presentar la estrategia utilizada en la creación de Massive Online Open Courses (MOOC) en la Universidad Técnica Particular de Loja (UTPL) de Ecuador. La hipótesis es: La configuración de los MOOC se potencia a través de profesionales en comunicación. Metodología: cualitativa, se utiliza análisis de contenidos y dos entrevistas semiestructuradas a docentes. Resulta conveniente que exista planificación previa de los MOOC sustentada en el trabajo cooperativo entre académicos y expertos en comunicación. Palabras clave: Educación, tecnología, aprendizaje virtual, vídeos educativos. ABSTRACT:
The Journal of Agriculture of the University of Puerto Rico
Control of black Sigatoka disease in plantains is imperative for adequate yield. Black Sigatoka i... more Control of black Sigatoka disease in plantains is imperative for adequate yield. Black Sigatoka is caused by the fungus Pseudocercospora fijiensis (Morelet) Deighton, formerly known as Mycosphaerella fijiensis Morelet. The disease does not immediately kill the plants, but by reducing the effective leaf area it interferes with photosynthesis (Churchill, 2011). If not controlled, the disease has the potential to devastate plantain fields. In Puerto Rico, the main plantain cultivar is 'Maricongo', a false-horn clone which is susceptible to black Sigatoka. Locally, a combination of synthetic pesticides and the sanitary removal of leaves, or parts of them, are used to control the disease. As suggested by Goenaga and Irizarry (2006), the use of French-type plantain clones may result in increased yield via increased production of fruits and by the tolerance of these clones to black Sigatoka. Resistance to this disease appears to be associated with French-type parents as the source of resistance in Musaceae breeding programs (Goenaga and Irizarry, 2006). A French-type tetraploid (AAAB) plantain cultivar, 'FHIA-21' was developed by the "Fundación Hondureña de Investigación Agrícola" (FHIA) at La Lima, Honduras. Major attributes of this cultivar are its high tolerance to black Sigatoka and higher yields than false-horn clones (Rowe, 1997; Hauser, 2010; Calvo, 2010); details for the plant characteristics of 'FHIA-21' were summarized in its patent (Rowe, 1997). However, 'FHIA-21' is susceptible to the Banana Streak Virus (Martínez et al., 2015), a virus that limits plant development and consequently reduces its yield potential
The Journal of Agriculture of the University of Puerto Rico
For fresh market sweet potato [Ipomea batatas (L.) Lam] quality is defined in terms of attractive... more For fresh market sweet potato [Ipomea batatas (L.) Lam] quality is defined in terms of attractiveness, sweetness, texture, and flavor composed of taste and odor after cooking. There is a scarcity of information regarding taste and volátiles of tropical type sweet potatoes. The first objective of this research was to provide a robust set of data for carbohydrate type and levels, alcohol insoluble solids (AIS) and volatile organic compounds (VOC) from six cultivars of sweet potato, data which will allow us to have a quantitative selection tool besides crop yield, tuber size and appearance. The second objective was to relate VOC differences among sweet potato cultivars that can be attributed to chemical and physical differences of the pulp before and after cooking. A three- harvest study was conducted to identify and determine major carbohydrate content, AIS, starch granule diameter and form, and tastes and odors of six cultivars of sweet potato, which were very sweet ('Gem'), ...
We survey a number of classification tools developed in recent years and employ them to classify ... more We survey a number of classification tools developed in recent years and employ them to classify pseudo-unitary rank 5 premodular categories up to Grothendieck equivalence.
Core ideas • NH 3 emissions from slurry splash-plate (SP) spreading can be <4% of the NH 4 + appl... more Core ideas • NH 3 emissions from slurry splash-plate (SP) spreading can be <4% of the NH 4 + applied • Trail hoses (TH) reduce NH 3 emissions from slurries vs. SP at cereal tillering • At sowing, low slurry dry matter bridges the gap on NH 3 emissions between TH and
para las trece áreas metropolitanas de Colombia, en este trabajo se examina la hipótesis de segme... more para las trece áreas metropolitanas de Colombia, en este trabajo se examina la hipótesis de segmentación del mercado laboral urbano en cada año del período 2001-2006. Se encuentra evidencia de segmentación entre empresas formales grandes y el resto (segmentación intrarregional o de escala), y entre Bogotá y las demás áreas metropolitanas (segmentación interregional).
Proceedings of the National Academy of Sciences of the United States of America, May 8, 2018
Soil creeps imperceptibly downhill, but also fails catastrophically to create landslides. Despite... more Soil creeps imperceptibly downhill, but also fails catastrophically to create landslides. Despite the importance of these processes as hazards and in sculpting landscapes, there is no agreed-upon model that captures the full range of behavior. Here we examine the granular origins of hillslope soil transport by discrete element method simulations and reanalysis of measurements in natural landscapes. We find creep for slopes below a critical gradient, where average particle velocity (sediment flux) increases exponentially with friction coefficient (gradient). At critical gradient there is a continuous transition to a dense-granular flow rheology. Slow earthflows and landslides thus exhibit glassy dynamics characteristic of a wide range of disordered materials; they are described by a two-phase flux equation that emerges from grain-scale friction alone. This glassy model reproduces topographic profiles of natural hillslopes, showing its promise for predicting hillslope evolution over g...
River bed-load transport is a kind of dense granular flow, and such flows are known to segregate ... more River bed-load transport is a kind of dense granular flow, and such flows are known to segregate grains. While gravel-river beds typically have an "armoured" layer of coarse grains on the surface, which acts to protect finer particles underneath from erosion, the contribution of granular physics to river-bed armouring has not yet been investigated. Here we examine these connections in a laboratory river with bimodal sediment size, by tracking the motion of particles from the surface to deep inside the bed, and find that armour develops by two distinct mechanisms. Bed-load transport in the near-surface layer drives rapid, shear rate-dependent advective segregation. Creeping grains beneath the bed-load layer give rise to slow but persistent diffusion-dominated segregation. We verify these findings with a continuum phenomenological model and discrete element method simulations. Our experiments suggest that some river-bed armouring may be due to granular segregation from below...
Robotic radical prostatectomy (RARP) is well established as a safe and effective treatment for pr... more Robotic radical prostatectomy (RARP) is well established as a safe and effective treatment for prostate cancer. According to published studies, patients undergoing RARP are at increased risk of being diagnosed with an inguinal hernia after RARP and are four times more likely to have an inguinal hernia repair (IHR) following RARP. Several studies have demonstrated the effectiveness and safety of IHR during RARP. Overall, it has been observed that IHR adds on average, 12-15 min in total surgical time and there were no significant differences between RARP with or without IHR with respect to postoperative complications. This study analyzes a large series of patients undergoing RARP (1100) and compares them to a group that underwent RARP with IHR (39). Between December 2008 and January 2015, 1139 patients underwent RARP at Florida Hospital in Celebration, FL. Of the total patients, 39 underwent concomitant IHR. All procedures were performed by the same surgeons (urologist and general sur...
A 600 kg sample of fly ash was collected from the hoppers of a lignite fired power plant. The sam... more A 600 kg sample of fly ash was collected from the hoppers of a lignite fired power plant. The sample was size-classified into three fractions: fine, medium, and coarse, with volume median aerodynamic diameters of 2.8, 6.6, and 30.0 ..mu..m, respectively. Physical, chemical, and biological analyses were performed on the samples. Morphologically, the lignite fly ash samples are quite similar
Não se admite a revogação de ato administrativo pelo uso ou pelos costumes.-As normas ou critério... more Não se admite a revogação de ato administrativo pelo uso ou pelos costumes.-As normas ou critérios de zoneamento devem ser editadas em lei, mas a individualização das áreas zoneadas para o efeito de limitações uúrbanísticas, quanto a construções, pode ser feita por decreto do Prefeito.
Esta es una revisión sobre el impacto de la religión en los ancianos. Casi 95% de los ancianos or... more Esta es una revisión sobre el impacto de la religión en los ancianos. Casi 95% de los ancianos oran regularmente y usan la religión como recurso. En contraste, sólo 2% de las publicaciones médicas incluyen la religión. La religiosidad tiene dos orientaciones intrínseca (individual) y extrínseca (grupal). Ambas orientaciones se asocian con la salud en los ancianos; disminuyen la mortalidad cardíaca, el estrés y la depresión; aumentan la satisfacción de vida y el bienestar. También hay disminución de ansiedad y depresión ante la muerte. Para explicar sus beneficios, se describen mecanismos como el promover un estilo de vida saludable; proveer fe, esperanza y sentido de trascendencia; dar apoyo socioemocional; proporcionar comunicación (el escuchar), relajación y catarsis. Los profesionales deben explorar las creencias religiosas para usarlas como recurso complementario en el tratamiento de los pacientes ancianos.
Resumen: En la Universidad del Valle la geriatria tiene un plan curricular para desarrollarse a n... more Resumen: En la Universidad del Valle la geriatria tiene un plan curricular para desarrollarse a nivel de pregrado y postgrado en las carreras de salud, el deberia llevar a la creacion de la especialidad de geriatria. Sin embargo, para este proceso hay barreras como son la negacion del envejecimiento y del anciano como paciente especial, y los mitos sobre el anciano y la geriatria. Tambien hay estrategias como el fomento de actitudes pdsitivas y de los valores humanos hacia el anciano, el estudio del envejecimiento normal y del anciano sano, la ensei'ianza de la relacion profesional-anciano, la geriatria como asignatura obligatoria, la formacion interdisciplinaria y la investigacion en geriatria. Revista Estomatologia 1996; 6(1): 45-49. Palabras clave: Geriatria, educacion curriculo, actitudes. Summary: Geriatrics at the University of Valle has a curriculum plan for its development in hea1th professions at undergraduate and graduate levels, it might lead to the creation of geriatrics specialty. However, for this process there are barriers such as denial of both aging and aged patient, and myths about the aged patient and geriatrics. Also, there are strategies such as promotion of positive attitudes and human values toward the aged, study of normal aging and healthy aged, teaching oftheprofessional-aged patient relationship, geriatrics as mandatory issue, interdisciplinary education, and geriatrics research.
Objective To evaluate the efficacy and safety of pemetrexed, carboplatin and bevacizumab (PCB) fo... more Objective To evaluate the efficacy and safety of pemetrexed, carboplatin and bevacizumab (PCB) followed by maintenance therapy with pemetrexed and bevacizumab (PB) in chemotherapynaïve patients with stage IV non-squamous non-small cell lung cancer (NSCLC) through the influence of thymidylate synthase (TS) protein and mRNA expression on several outcomes. The primary endpoints were the overall response rate (ORR), progression-free survival (PFS) and overall survival (OS). Methods A cohort of 144 patients were administered pemetrexed (500 mg/m 2), carboplatin (AUC, 5.0 mg/ml/min) and bevacizumab (7.5 mg/kg) intravenously every three weeks for up to four cycles. Maintenance PB was administered until disease progression or unacceptable toxicity.
We prove a Model Existence Theorem for a fully infinitary logic for metric structures. This resul... more We prove a Model Existence Theorem for a fully infinitary logic for metric structures. This result is based on a generalization of the notions of approximate formulas and approximate truth in normed structures introduced by Henson and studied in different forms by Anderson and Fajardo & Keisler. This theorem extends Henson's Compactness Theorem for approximate truth in normed space structures to infinitary formulas.
El propósito de la investigación es presentar la estrategia utilizada en la creación de Massive O... more El propósito de la investigación es presentar la estrategia utilizada en la creación de Massive Online Open Courses (MOOC) en la Universidad Técnica Particular de Loja (UTPL) de Ecuador. La hipótesis es: La configuración de los MOOC se potencia a través de profesionales en comunicación. Metodología: cualitativa, se utiliza análisis de contenidos y dos entrevistas semiestructuradas a docentes. Resulta conveniente que exista planificación previa de los MOOC sustentada en el trabajo cooperativo entre académicos y expertos en comunicación. Palabras clave: Educación, tecnología, aprendizaje virtual, vídeos educativos. ABSTRACT:
The Journal of Agriculture of the University of Puerto Rico
Control of black Sigatoka disease in plantains is imperative for adequate yield. Black Sigatoka i... more Control of black Sigatoka disease in plantains is imperative for adequate yield. Black Sigatoka is caused by the fungus Pseudocercospora fijiensis (Morelet) Deighton, formerly known as Mycosphaerella fijiensis Morelet. The disease does not immediately kill the plants, but by reducing the effective leaf area it interferes with photosynthesis (Churchill, 2011). If not controlled, the disease has the potential to devastate plantain fields. In Puerto Rico, the main plantain cultivar is 'Maricongo', a false-horn clone which is susceptible to black Sigatoka. Locally, a combination of synthetic pesticides and the sanitary removal of leaves, or parts of them, are used to control the disease. As suggested by Goenaga and Irizarry (2006), the use of French-type plantain clones may result in increased yield via increased production of fruits and by the tolerance of these clones to black Sigatoka. Resistance to this disease appears to be associated with French-type parents as the source of resistance in Musaceae breeding programs (Goenaga and Irizarry, 2006). A French-type tetraploid (AAAB) plantain cultivar, 'FHIA-21' was developed by the "Fundación Hondureña de Investigación Agrícola" (FHIA) at La Lima, Honduras. Major attributes of this cultivar are its high tolerance to black Sigatoka and higher yields than false-horn clones (Rowe, 1997; Hauser, 2010; Calvo, 2010); details for the plant characteristics of 'FHIA-21' were summarized in its patent (Rowe, 1997). However, 'FHIA-21' is susceptible to the Banana Streak Virus (Martínez et al., 2015), a virus that limits plant development and consequently reduces its yield potential
The Journal of Agriculture of the University of Puerto Rico
For fresh market sweet potato [Ipomea batatas (L.) Lam] quality is defined in terms of attractive... more For fresh market sweet potato [Ipomea batatas (L.) Lam] quality is defined in terms of attractiveness, sweetness, texture, and flavor composed of taste and odor after cooking. There is a scarcity of information regarding taste and volátiles of tropical type sweet potatoes. The first objective of this research was to provide a robust set of data for carbohydrate type and levels, alcohol insoluble solids (AIS) and volatile organic compounds (VOC) from six cultivars of sweet potato, data which will allow us to have a quantitative selection tool besides crop yield, tuber size and appearance. The second objective was to relate VOC differences among sweet potato cultivars that can be attributed to chemical and physical differences of the pulp before and after cooking. A three- harvest study was conducted to identify and determine major carbohydrate content, AIS, starch granule diameter and form, and tastes and odors of six cultivars of sweet potato, which were very sweet ('Gem'), ...
We survey a number of classification tools developed in recent years and employ them to classify ... more We survey a number of classification tools developed in recent years and employ them to classify pseudo-unitary rank 5 premodular categories up to Grothendieck equivalence.
Core ideas • NH 3 emissions from slurry splash-plate (SP) spreading can be <4% of the NH 4 + appl... more Core ideas • NH 3 emissions from slurry splash-plate (SP) spreading can be <4% of the NH 4 + applied • Trail hoses (TH) reduce NH 3 emissions from slurries vs. SP at cereal tillering • At sowing, low slurry dry matter bridges the gap on NH 3 emissions between TH and
para las trece áreas metropolitanas de Colombia, en este trabajo se examina la hipótesis de segme... more para las trece áreas metropolitanas de Colombia, en este trabajo se examina la hipótesis de segmentación del mercado laboral urbano en cada año del período 2001-2006. Se encuentra evidencia de segmentación entre empresas formales grandes y el resto (segmentación intrarregional o de escala), y entre Bogotá y las demás áreas metropolitanas (segmentación interregional).
Proceedings of the National Academy of Sciences of the United States of America, May 8, 2018
Soil creeps imperceptibly downhill, but also fails catastrophically to create landslides. Despite... more Soil creeps imperceptibly downhill, but also fails catastrophically to create landslides. Despite the importance of these processes as hazards and in sculpting landscapes, there is no agreed-upon model that captures the full range of behavior. Here we examine the granular origins of hillslope soil transport by discrete element method simulations and reanalysis of measurements in natural landscapes. We find creep for slopes below a critical gradient, where average particle velocity (sediment flux) increases exponentially with friction coefficient (gradient). At critical gradient there is a continuous transition to a dense-granular flow rheology. Slow earthflows and landslides thus exhibit glassy dynamics characteristic of a wide range of disordered materials; they are described by a two-phase flux equation that emerges from grain-scale friction alone. This glassy model reproduces topographic profiles of natural hillslopes, showing its promise for predicting hillslope evolution over g...
River bed-load transport is a kind of dense granular flow, and such flows are known to segregate ... more River bed-load transport is a kind of dense granular flow, and such flows are known to segregate grains. While gravel-river beds typically have an "armoured" layer of coarse grains on the surface, which acts to protect finer particles underneath from erosion, the contribution of granular physics to river-bed armouring has not yet been investigated. Here we examine these connections in a laboratory river with bimodal sediment size, by tracking the motion of particles from the surface to deep inside the bed, and find that armour develops by two distinct mechanisms. Bed-load transport in the near-surface layer drives rapid, shear rate-dependent advective segregation. Creeping grains beneath the bed-load layer give rise to slow but persistent diffusion-dominated segregation. We verify these findings with a continuum phenomenological model and discrete element method simulations. Our experiments suggest that some river-bed armouring may be due to granular segregation from below...
Robotic radical prostatectomy (RARP) is well established as a safe and effective treatment for pr... more Robotic radical prostatectomy (RARP) is well established as a safe and effective treatment for prostate cancer. According to published studies, patients undergoing RARP are at increased risk of being diagnosed with an inguinal hernia after RARP and are four times more likely to have an inguinal hernia repair (IHR) following RARP. Several studies have demonstrated the effectiveness and safety of IHR during RARP. Overall, it has been observed that IHR adds on average, 12-15 min in total surgical time and there were no significant differences between RARP with or without IHR with respect to postoperative complications. This study analyzes a large series of patients undergoing RARP (1100) and compares them to a group that underwent RARP with IHR (39). Between December 2008 and January 2015, 1139 patients underwent RARP at Florida Hospital in Celebration, FL. Of the total patients, 39 underwent concomitant IHR. All procedures were performed by the same surgeons (urologist and general sur...
A 600 kg sample of fly ash was collected from the hoppers of a lignite fired power plant. The sam... more A 600 kg sample of fly ash was collected from the hoppers of a lignite fired power plant. The sample was size-classified into three fractions: fine, medium, and coarse, with volume median aerodynamic diameters of 2.8, 6.6, and 30.0 ..mu..m, respectively. Physical, chemical, and biological analyses were performed on the samples. Morphologically, the lignite fly ash samples are quite similar
Não se admite a revogação de ato administrativo pelo uso ou pelos costumes.-As normas ou critério... more Não se admite a revogação de ato administrativo pelo uso ou pelos costumes.-As normas ou critérios de zoneamento devem ser editadas em lei, mas a individualização das áreas zoneadas para o efeito de limitações uúrbanísticas, quanto a construções, pode ser feita por decreto do Prefeito.
Esta es una revisión sobre el impacto de la religión en los ancianos. Casi 95% de los ancianos or... more Esta es una revisión sobre el impacto de la religión en los ancianos. Casi 95% de los ancianos oran regularmente y usan la religión como recurso. En contraste, sólo 2% de las publicaciones médicas incluyen la religión. La religiosidad tiene dos orientaciones intrínseca (individual) y extrínseca (grupal). Ambas orientaciones se asocian con la salud en los ancianos; disminuyen la mortalidad cardíaca, el estrés y la depresión; aumentan la satisfacción de vida y el bienestar. También hay disminución de ansiedad y depresión ante la muerte. Para explicar sus beneficios, se describen mecanismos como el promover un estilo de vida saludable; proveer fe, esperanza y sentido de trascendencia; dar apoyo socioemocional; proporcionar comunicación (el escuchar), relajación y catarsis. Los profesionales deben explorar las creencias religiosas para usarlas como recurso complementario en el tratamiento de los pacientes ancianos.
Resumen: En la Universidad del Valle la geriatria tiene un plan curricular para desarrollarse a n... more Resumen: En la Universidad del Valle la geriatria tiene un plan curricular para desarrollarse a nivel de pregrado y postgrado en las carreras de salud, el deberia llevar a la creacion de la especialidad de geriatria. Sin embargo, para este proceso hay barreras como son la negacion del envejecimiento y del anciano como paciente especial, y los mitos sobre el anciano y la geriatria. Tambien hay estrategias como el fomento de actitudes pdsitivas y de los valores humanos hacia el anciano, el estudio del envejecimiento normal y del anciano sano, la ensei'ianza de la relacion profesional-anciano, la geriatria como asignatura obligatoria, la formacion interdisciplinaria y la investigacion en geriatria. Revista Estomatologia 1996; 6(1): 45-49. Palabras clave: Geriatria, educacion curriculo, actitudes. Summary: Geriatrics at the University of Valle has a curriculum plan for its development in hea1th professions at undergraduate and graduate levels, it might lead to the creation of geriatrics specialty. However, for this process there are barriers such as denial of both aging and aged patient, and myths about the aged patient and geriatrics. Also, there are strategies such as promotion of positive attitudes and human values toward the aged, study of normal aging and healthy aged, teaching oftheprofessional-aged patient relationship, geriatrics as mandatory issue, interdisciplinary education, and geriatrics research.
Objective To evaluate the efficacy and safety of pemetrexed, carboplatin and bevacizumab (PCB) fo... more Objective To evaluate the efficacy and safety of pemetrexed, carboplatin and bevacizumab (PCB) followed by maintenance therapy with pemetrexed and bevacizumab (PB) in chemotherapynaïve patients with stage IV non-squamous non-small cell lung cancer (NSCLC) through the influence of thymidylate synthase (TS) protein and mRNA expression on several outcomes. The primary endpoints were the overall response rate (ORR), progression-free survival (PFS) and overall survival (OS). Methods A cohort of 144 patients were administered pemetrexed (500 mg/m 2), carboplatin (AUC, 5.0 mg/ml/min) and bevacizumab (7.5 mg/kg) intravenously every three weeks for up to four cycles. Maintenance PB was administered until disease progression or unacceptable toxicity.
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Papers by Carlos Ortiz