579 resultados para 1260
On the Riemann-Liouville Fractional q-Integral Operator Involving a Basic Analogue of Fox H-Function
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2000 Mathematics Subject Classification: 33D60, 26A33, 33C60
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Nonadherence to medication for tuberculosis (TB) can lead to new cases of TB and death. Interest in spirituality in healthcare has grown among adult educators, health educators and healthcare workers (Tisdell, 2003). This mixed-method study will explore spirituality and TB medication adherence among African American and Haitian populations.
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Although it is a substantial issue, the technology behind genetically altered foods and the concerns being raised about them are not well understood by most people. The authors discuss how genetically altered foods might fit into the business strategies of multi-unit food service operators as well as current policies and predispositions of multi-unit food service companies toward the use of genetically altered foods. They also outline the issues surrounding genetically altered food as they relate to the food service industry and provide a picture of where multi-unit food service operators currently stand on the technology
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Charles Perry and Man standing in the lane of a new business or residential development. Charles Edward Perry (Chuck), 1937-1999, was the founding president of Florida International University in Miami. He grew up in Logan County, West Virginia and graduated from Bowling Green State University. He married Betty Laird in 1960. In 1969, at the age of 32, Perry was the youngest president of any university in the nation. The name of the university reflects Perry’s desire for a title that would not limit the scope of the institution and would support his vision of having close ties to Latin America. Perry and a founding corps opened FIU to 5,667 students in 1972 with only one large building housing six different schools. Perry left the office of President of FIU in 1976 when the student body had grown to 10,000 students and the university had six buildings, offered 134 different degrees and was fully accredited. Charles Perry died on August 30, 1999 at his home in Rockwall, Texas. He is buried on the FIU campus in front of the Graham Center entrance.
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Vol. 21, Issue 38, 8 pages
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The purpose of this study was to investigate the lived experience of racism among African-American nurses. Utilizing a qualitative phenomenological approach, data were collected by interviewing 10 African-American nurses currently practicing in Dade county. The interviews were tape recorded and transcribed verbatim. Data were analyzed using the seven step method of Colaizzi (1978). The findings of this study indicate that racism encompasses attitudes and beliefs which generate behaviors reflecting ethnocentric ideations. The process of racism creates glass ceilings that hinder the career advancement of African-American nurses. Internalizing these experiences of racism engenders feelings of betrayal and erodes unity and cohesion within the group. This study points out the need to openly confront racism in the nursing profession, from the classroom to the workplace.
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http://digitalcommons.fiu.edu/fce_lter_photos/1260/thumbnail.jpg
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Compressional- and shear-wave velocity logs (Vp and Vs, respectively) that were run to a sub-basement depth of 1013 m (1287.5 m sub-bottom) in Hole 504B suggest the presence of Layer 2A and document the presence of layers 2B and 2C on the Costa Rica Rift. Layer 2A extends from the mudline to 225 m sub-basement and is characterized by compressional-wave velocities of 4.0 km/s or less. Layer 2B extends from 225 to 900 m and may be divided into two intervals: an upper level from 225 to 600 m in which Vp decreases slowly from 5.0 to 4.8 km/s and a lower level from 600 to about 900 m in which Vp increases slowly to 6.0 km/s. In Layer 2C, which was logged for about 100 m to a depth of 1 km, Vp and Vs appear to be constant at 6.0 and 3.2 km/s, respectively. This velocity structure is consistent with, but more detailed than the structure determined by the oblique seismic experiment in the same hole. Since laboratory measurements of the compressional- and shear-wave velocity of samples from Hole 504B at Pconfining = Pdifferential average 6.0 and 3.2 km/s respectively, and show only slight increases with depth, we conclude that the velocity structure of Layer 2 is controlled almost entirely by variations in porosity and that the crack porosity of Layer 2C approaches zero. A comparison between the compressional-wave velocities determined by logging and the formation porosities calculated from the results of the large-scale resistivity experiment using Archie's Law suggest that the velocity- porosity relation derived by Hyndman et al. (1984) for laboratory samples serves as an upper bound for Vp, and the noninteractive relation derived by Toksöz et al. (1976) for cracks with an aspect ratio a = 1/32 serves as a lower bound.
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We investigated the phosphorus (P) and iron (Fe) fractionation in four cores with anoxic sediments, deposited during the mid-Cretaceous oceanic anoxic event 2 (~94 Ma) and the Paleocene-Eocene thermal maximum (?55 Ma), that were exposed to oxygen after core recovery. Surprisingly, P associated with iron oxyhydroxides (Fe-bound P) was a major P phase in these laminated sediments deposited under euxinic conditions. A significant fraction of total Fe was present as (poorly) crystalline ferric Fe. This fraction increased with increasing storage time of the investigated cores. In carbonate-poor samples, Fe-bound P accounted for up to 99% of total P and its abundance correlated with pyrite contents. In samples with higher CaCO3 contents (>5 wt% in the investigated samples), P was mostly present in authigenic Ca-P minerals, irrespective of pyrite contents. We conclude that the P fractionation in anoxic, carbonate-poor, sediments is strongly affected by pyrite oxidation that occurs when these sediments are exposed to oxygen. Pyrite oxidation produces sulfuric acid and iron oxyhydroxides. The abundance of poorly crystalline Fe oxyhydroxides provides further evidence that these were indeed formed through recent (post-recovery) oxidation rather than in situ tens of millions of years ago. The acid dissolves apatite and the released phosphate is subsequently bound in the freshly formed iron oxyhydroxides. Pyrite oxidation thus leads to a conversion of authigenic Ca-P to Fe-bound P. In more calcareous samples, CaCO3 can act as an effective buffer against acidic dissolution of Ca-P minerals. The results indicate that shielding of sediments from atmospheric oxygen is vital to preserve the in situ P fractionation and to enable a valid reconstruction of marine phosphorus cycling based on sediment records.
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Marine spatial planning and ecological research call for high-resolution species distribution data. However, those data are still not available for most marine large vertebrates. The dynamic nature of oceanographic processes and the wide-ranging behavior of many marine vertebrates create further difficulties, as distribution data must incorporate both the spatial and temporal dimensions. Cetaceans play an essential role in structuring and maintaining marine ecosystems and face increasing threats from human activities. The Azores holds a high diversity of cetaceans but the information about spatial and temporal patterns of distribution for this marine megafauna group in the region is still very limited. To tackle this issue, we created monthly predictive cetacean distribution maps for spring and summer months, using data collected by the Azores Fisheries Observer Programme between 2004 and 2009. We then combined the individual predictive maps to obtain species richness maps for the same period. Our results reflect a great heterogeneity in distribution among species and within species among different months. This heterogeneity reflects a contrasting influence of oceanographic processes on the distribution of cetacean species. However, some persistent areas of increased species richness could also be identified from our results. We argue that policies aimed at effectively protecting cetaceans and their habitats must include the principle of dynamic ocean management coupled with other area-based management such as marine spatial planning.
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The necessity of elemental analysis techniques to solve forensic problems continues to expand as the samples collected from crime scenes grow in complexity. Laser ablation ICP-MS (LA-ICP-MS) has been shown to provide a high degree of discrimination between samples that originate from different sources. In the first part of this research, two laser ablation ICP-MS systems were compared, one using a nanosecond laser and another a femtosecond laser source for the forensic analysis of glass. The results showed that femtosecond LA-ICP-MS did not provide significant improvements in terms of accuracy, precision and discrimination, however femtosecond LA-ICP-MS did provide lower detection limits. In addition, it was determined that even for femtosecond LA-ICP-MS an internal standard should be utilized to obtain accurate analytical results for glass analyses. In the second part, a method using laser induced breakdown spectroscopy (LIBS) for the forensic analysis of glass was shown to provide excellent discrimination for a glass set consisting of 41 automotive fragments. The discrimination power was compared to two of the leading elemental analysis techniques, µXRF and LA-ICP-MS, and the results were similar; all methods generated >99% discrimination and the pairs found indistinguishable were similar. An extensive data analysis approach for LIBS glass analyses was developed to minimize Type I and II errors en route to a recommendation of 10 ratios to be used for glass comparisons. Finally, a LA-ICP-MS method for the qualitative analysis and discrimination of gel ink sources was developed and tested for a set of ink samples. In the first discrimination study, qualitative analysis was used to obtain 95.6% discrimination for a blind study consisting of 45 black gel ink samples provided by the United States Secret Service. A 0.4% false exclusion (Type I) error rate and a 3.9% false inclusion (Type II) error rate was obtained for this discrimination study. In the second discrimination study, 99% discrimination power was achieved for a black gel ink pen set consisting of 24 self collected samples. The two pairs found to be indistinguishable came from the same source of origin (the same manufacturer and type of pen purchased in different locations). It was also found that gel ink from the same pen, regardless of the age, was indistinguishable as were gel ink pens (four pens) originating from the same pack.
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Esta investigación tiene por propósito analizar la construcción histórica de la infancia en el proceso de escolarización desde las diferentes formas de clasificación y jerarquización tales como niños "anormales", "débiles", "falsos anormales", "retrasados pedagógicos", "excepcionales", "deficientes". En esta dirección se analizan los cambios en la legislación, y normativa educativa en la provincia de Buenos Aires en el período de 1880 a 1952. Se tomó a la legislación y la prensa educativa como analizadoras de las diferentes conceptualizaciones pedagógicas, atravesadas por las nociones de saber, poder, subjetivación y tecnología. Al mismo tiempo, se analizaran las categorías de norma, normalidad, anormalidad y normalización en relación con el lenguaje jurídico, la política educativa y la política sanitaria escolar. Desde el punto de vista teórico la investigación se inscribe en los estudios sobre gubernamentalidad, los cuales permitieron analizar, por una parte, la construcción histórica de saberes especializados cuyo foco fue la población, (en este caso fue la población infantil) y por otro lado, apuntó a reconstruir las formas de clasificación de las infancias en el proceso de escolarización. De esta manera, se pretendió objetivar las funciones sociales de los discursos cuestionando los saberes que originaron su configuración sirviéndole de cobertura y soporte, o sea, someter a crítica los saberes propios de la racionalidad instituida y dominante que constituyen en gran parte el orden social. Este posicionamiento teórico entiende a la crítica esencialmente por su función de des-sujeción de lo que pudiéramos llamar la "política de la verdad", entonces historizar los diferentes modos de subjetivación, encierra también la posibilidad de objetivación que transforman a los seres humanos en sujetos, o sea la crítica como cuestionamiento de las formas de experiencias que nos constituyen
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Esta investigación tiene por propósito analizar la construcción histórica de la infancia en el proceso de escolarización desde las diferentes formas de clasificación y jerarquización tales como niños "anormales", "débiles", "falsos anormales", "retrasados pedagógicos", "excepcionales", "deficientes". En esta dirección se analizan los cambios en la legislación, y normativa educativa en la provincia de Buenos Aires en el período de 1880 a 1952. Se tomó a la legislación y la prensa educativa como analizadoras de las diferentes conceptualizaciones pedagógicas, atravesadas por las nociones de saber, poder, subjetivación y tecnología. Al mismo tiempo, se analizaran las categorías de norma, normalidad, anormalidad y normalización en relación con el lenguaje jurídico, la política educativa y la política sanitaria escolar. Desde el punto de vista teórico la investigación se inscribe en los estudios sobre gubernamentalidad, los cuales permitieron analizar, por una parte, la construcción histórica de saberes especializados cuyo foco fue la población, (en este caso fue la población infantil) y por otro lado, apuntó a reconstruir las formas de clasificación de las infancias en el proceso de escolarización. De esta manera, se pretendió objetivar las funciones sociales de los discursos cuestionando los saberes que originaron su configuración sirviéndole de cobertura y soporte, o sea, someter a crítica los saberes propios de la racionalidad instituida y dominante que constituyen en gran parte el orden social. Este posicionamiento teórico entiende a la crítica esencialmente por su función de des-sujeción de lo que pudiéramos llamar la "política de la verdad", entonces historizar los diferentes modos de subjetivación, encierra también la posibilidad de objetivación que transforman a los seres humanos en sujetos, o sea la crítica como cuestionamiento de las formas de experiencias que nos constituyen
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Esta investigación tiene por propósito analizar la construcción histórica de la infancia en el proceso de escolarización desde las diferentes formas de clasificación y jerarquización tales como niños "anormales", "débiles", "falsos anormales", "retrasados pedagógicos", "excepcionales", "deficientes". En esta dirección se analizan los cambios en la legislación, y normativa educativa en la provincia de Buenos Aires en el período de 1880 a 1952. Se tomó a la legislación y la prensa educativa como analizadoras de las diferentes conceptualizaciones pedagógicas, atravesadas por las nociones de saber, poder, subjetivación y tecnología. Al mismo tiempo, se analizaran las categorías de norma, normalidad, anormalidad y normalización en relación con el lenguaje jurídico, la política educativa y la política sanitaria escolar. Desde el punto de vista teórico la investigación se inscribe en los estudios sobre gubernamentalidad, los cuales permitieron analizar, por una parte, la construcción histórica de saberes especializados cuyo foco fue la población, (en este caso fue la población infantil) y por otro lado, apuntó a reconstruir las formas de clasificación de las infancias en el proceso de escolarización. De esta manera, se pretendió objetivar las funciones sociales de los discursos cuestionando los saberes que originaron su configuración sirviéndole de cobertura y soporte, o sea, someter a crítica los saberes propios de la racionalidad instituida y dominante que constituyen en gran parte el orden social. Este posicionamiento teórico entiende a la crítica esencialmente por su función de des-sujeción de lo que pudiéramos llamar la "política de la verdad", entonces historizar los diferentes modos de subjetivación, encierra también la posibilidad de objetivación que transforman a los seres humanos en sujetos, o sea la crítica como cuestionamiento de las formas de experiencias que nos constituyen