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El presente tiene como propósito analizar la novela Ximena de dos caminos de Laura Riesco, a partir de doce dicotomías extraídas de su lectura: niño/adulto, campesino/minero, oralidad/escritura, animista/ irracional, nativo/extranjero, español/quechua, ciudad/campo, pasado/ presente, opresión/justicia, etc. El estudio consiste en la aplicación de la categoría andina del tinkuy (opuestos-complementarios) sobre los pares propuestos, a fin de demostrar la contradictoria realidad peruana, identificar los sentidos profundos de los mensajes, así como la sabiduría milenaria del hombre andino frente al mundo moderno. El principio de la dualidad es el eje central del pensamiento andino. Todo cuanto existe en el plano social y en el ámbito natural está interrelacionado. En la novela reconocemos pugnas individuales y colectivas, oposición entre dos universos: el andino y el occidental, el mundo de los adultos y el de los niños, el pasado y el presente, la opresión versus la justicia, etc. Estas contradicciones resumen nuestra historia y son los síntomas de la problemática socioeconómica aún no resuelta .

A large enigmatic fossil is described from the early Cambrian (Series 2, Stage 3) Heatherdale Shale in the Fleurieu Peninsula, South Australia. It has an almost circular outline about 150 mm across, with an outer rim and 27–30 evenly-spaced rays that extend about two-thirds of the distance to the centre of the structure; it shows radial symmetry. There is a featureless central area with a width about one-third that of the entire specimen. The fossil is preserved as pale-coloured material that stands out slightly above the surrounding mudstone. XRF data indicate that there is little compositional difference between the fossil and the enclosing rock. The fossil may appear to be a transverse section of a larger organism, but it does not continue down into the surrounding rock. This suggests it is a non-mineralised compression fossil that retains the remnants of a three-dimensional structure. Possible affinities with radiodont oral cones, ctenophores, eldonioids, scyphozoa and archaeocyaths are discussed, but no definite assignment can be made. [ABSTRACT FROM AUTHOR]

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The Skyberg Biota is a new early Cambrian Konservat-Lagerstätte, documented from a 7.5-m-thick succession of the Skyberg Member, Ringstranda Formation, in the classical Mjosa area of Norway. It displays a high species diversity and contains: algae; sponges; brachiopods; hyoliths; bivalved arthropods; trilobites; palaeoscolecids and other vermiform organisms; weakly sclerotized fragments of unknown affinity; several tubicolous fossils; the enigmatic genus Lapworthella; and a number of additional problematica together with infrequent trace fossils consisting of burrows and faecal pellets. This novel macro-biota encloses the most diverse fossil assemblage known from the Cambrian Series 2 locally in the Mjosa area, and regionally in Baltoscandia, and currently includes around 50 species of 10 major animal groups and macro-algae. The Skyberg Biota contains taxa previously unknown from Norway, several are new to Baltoscandia and also includes a range of new species. The Skyberg biota offers a rare glimpse into the biodiversity of Baltoscandia just prior to the large faunal turnover at the late-middle Cambrian transition. [ABSTRACT FROM AUTHOR]

Tullimonstrum gregarium, also known as the Tully monster, is a well‐known phylogenetic enigma, fossils of which have been found only in the Mazon Creek Lagerstätte. The affinities of Tullimonstrum have been debated since its discovery in 1966, because its peculiar morphology with stalked eyes and a proboscis cannot easily be compared with any known animal morphotypes. Recently, the possibility that Tullimonstrum was a vertebrate has attracted much attention, and it has been postulated that Tullimonstrum might fill a gap in the fossil record of early vertebrates, providing important insights into vertebrate evolutionary history. With the hope of resolving this debate, we collected 3D surface data from 153 specimens of Tullimonstrum using a high‐resolution laser 3D scanner and conducted x‐ray micro‐computed tomographic (μCT) analysis of stylets in the proboscis. Our investigation of the resulting comprehensive 3D morphological dataset revealed that structures previously regarded as myomeres, tri‐lobed brain, tectal cartilages and fin rays are not comparable with those of vertebrates. These results raise further doubts about its vertebrate affinities, and suggest that Tullimonstrum may have been either a non‐vertebrate chordate or a protostome. [ABSTRACT FROM AUTHOR]

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Copyright of Tesla Revista Científica is the property of Puerto Madero Editorial Academica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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En el mercado “Héroes del 47” de Tuxpan se presenta una problemática en el manejo de los residuos sólidos. De tal manera que el objetivo de este trabajo fue caracterizar los residuos sólidos para el mercado. Primero se determinó el tamaño de la muestra, se seleccionaron los 36 locales por muestreo aleatorio por bloques, posteriormente se realizó la caracterización de los residuos sólidos, se llevó a cabo en dos muestreos en el mes de mayo y agosto de 2015, posteriormente se realizó un análisis estadístico con el Modelo Lineal Generalizado (GML) con el fin de evaluar las variables independientes días, muestreo y subproducto sobre el peso generado en Kg por día. La determinación de la composición física de los residuos se ejecutó con base en la NMX-AA-022-1985 y con apoyo de la NMX-AA-015-1985. El modelo lineal generalizado no mostró una diferencia en el peso total de los residuos sólidos entre los siete días muestreados de la semana (X2=8.89, g.l=6, P=0.17994), sin embargo, el peso total de los residuos entre los dos muestreos realizados en mayo y agosto, si presentaron diferencias significativas (X2=3.96, g.l=1, P=0.04665).

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Copyright of Revista Biológico Agropecuaria Tuxpan is the property of Revista Biologico Agropecuaria Tuxpan and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Se realizó un análisis de la situación actual de la apicultura en Sayula de Alemán, Veracruz. Se recopiló información de instituciones como la Asociación de apicultores de Sayula de Alemán, la Secretaría de Agricultura y Desarrollo Rural Sayula y apicultores independientes. Esto a través de encuestas o entrevista de preguntas cerradas o abiertas. Una vez finalizada la parte de campo, la información fue analizada e interpretada. De los resultado obtenidos resalta el hecho de que la apicultura se considera una actividad pese a los problemas que enfrenta. Por lo que, se hace mcnión a una serie de recomendaciones como el impulsar campañas para la protección y cuidado de las abejas, así como para que la miel sea un producto más conocido e informar acerca de las cualidades que presenta el producto. Con el fin de mejorar las codiciones de los apicultores.

En este articulo se e observará la problemática que bloquea con sus tres ejes centrales dentro de la enseñanza del derecho. Siguiendo el parámetro de la educación misma se tendrán conceptos básicos para el entendimiento correcto estos son: derecho, enseñanza y enseñanza del derecho. Se explican los métodos de catedráticos que se dieron alrededor de la historia de México y por ende utilizamos el método comparativo; para observar todos planes de estudios o métodos que se llevan en otras universidades de Europa. Al establecer todas las bases de la enseñanza del derecho, se planea la problemática con enfoque triangular de esta, impidiendo así el cumplimiento de derecho humano a la educación de forma garante. Estos tienen tres aspectos fundamentales de equilibrio paralelo: 1. El docente capacitado con o sin experiencia, 2. El plan de estudios que emplea la universidad junto con el alumno pasivo o activo y 3. El más importante y relevante el método de enseñanza utilizado por cada universidad. Para sustentar todos los aspectos de nuestra tesis se tiene una evaluación propia de los planes de estudios de ocho universidades que se encuentran en varios estados de México y así mismo los números de sus anuarios escolares de nivel licenciatura en el ciclo escolar 2018-2019.

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Three-dimensionally preserved fragments of the enigmatic organism Sandvikina, previously reported from the Silurian of Ireland, Scotland and Scandinavia, were recovered from the original Irish material that had revealed the problematic in thin sections. The new specimens derive from conodont residue and document silicified sectors of the distal part of the skeleton. Adifferent pattern characterizes the outer and inner walls, with an external net-like reticulated and an internal continuous and apparently imperforate framework, getting therefore a filter-like feeding system function highly improbable. [ABSTRACT FROM AUTHOR]

Problematic fossils are described from Late Ediacaran to Early Cambrian red sandstones of the Arumbera Sandstone, Grant Bluff, and Central Mount Stuart Formations in central Australia, within a new systematic classification of Vendobionta. Arumberia banksi has been one of the most problematic of Ediacaran fossils, at first considered a fossil and then a sedimentary or organo-sedimentary structure. Our re-examination of the type material and collection of new material reveals misconceptions about its topology: it was a recessive fossil on the bed top, protruding down from the counterpart overlying slab. The concave-up body was 3 mm thick and chambered above a diffuse lower surface, so not a sedimentary structure. Also re-evaluated is the discoid fossil Hallidaya brueri, here including "Skinnera brooksi' as its upper surface. A new species (Noffkarkys storaaslii gen. et sp. nov.) is a multilobed frond with regular, fine, trapezoidal quilts. Three new records of Trepassia wardae, Dickinsonia costata, and Ernietta plateauensis are reported from the Arumbera and Grant Bluff Formations. Reevaluation of palaeomagnetic and biostratigraphic data suggest an hiatus of 26 million years at the Ediacaran–Cambrian boundary within the Arumbera Formation, but some of this missing time is filled by the Grant Bluff and Central Mount Stuart Formations. [ABSTRACT FROM AUTHOR]

O presente artigo tem como objetivo investigar a recepção da obra de Marx em Althusser. Analisa-se em maior profundidade a leitura desenvolvida por Althusser a respeito do papel ocupado pela obra do jovem Marx no desenvolvimento do pensamento do filósofo alemão. Com base na análise de textos e livros publicados por Althusser durante a década de 1960 e 1970, conclui-se que a recepção de Marx por Althusser foi marcada pela busca de uma atualização da filosofia marxiana de modo que ela pudesse estar em condições de adentrar o debate filosófico-político desenvolvido na França na década de 1960.

Jihad is a term that stirs up considerable controversy in the Islamic Thought. This word has appeared in an extraordinary way due to many stimulations, represented during the last decades. The concept of Jihad, the idea of its pacifism or bellicosity and its problematic definition in the Spanish dictionary represent certain types of complexity. The problematic point is the erroneous definition registered of the term Jihad in the DRAE, as a 'holy war'. We try to follow the conflicting interpretations on this term; that has created misconceptions and need clarification now more than before. In fact, the problem lies in the definition and its negative connotations that are completely different from its original meaning. Therefore, our approach in this article is mainly lexicographical. Moreover, it represents an opportunity to get closer to the true meaning of the term Jihad both in its sensu lato and in its sensu stricto. [ABSTRACT FROM AUTHOR]

Copyright of Actas de Diseño is the property of Facultad de Diseno y Comunicacion, Fundacion Universidad de Palermo and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Management Education students carry out internships during the last three semesters of the curricular plan. Although university managers and teachers (tutors / mentors) make the necessary arrangements to plan the participation of students in institutional activities, the social reality of how organizations work makes the process of immersion more difficult for students, who face struggles of various kinds that make them feel upset, frustrated and unmotivated. Research project “The management of the curriculum in the final training path of the Universidad Pedagógica Nacional (UPN) educational management degree” has allowed to keep track of the management practices of the LAE curriculum, related to the planning, offer and coordination of the curricular spaces of professional practices and their impact on school learning. An important part of the management of the curriculum in the LAE refers to the attention and accompaniment of students in the process of performing professional practices, especially at the stage of immersion in new settings, programs or projects. We have identified the most common struggles faced by students at this stage and whose negative impact. In these circumstances, a pertinent and timely intervention, based on the methods, resources and techniques offered by Positive Psychology, will reduce the negative impact of the problems detected and provide students with personal and emotional strengths, as well as social skills that promote acquisition of the expected learning.

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Chancelloriids are a poorly understood group of phylogenetically problematic Cambrian metazoans; complete specimens show they were sessile, radially symmetrical, club‐shaped organisms covered with sclerites in the form of rosettes of spines. While isolated sclerites are common components of Cambrian shelly assemblages, they have been relatively little studied. We describe chancelloriid sclerites from a series of nine sections spanning the upper Dyeran to lower Delamaran stages (latest Stage 4 to perhaps basal Wuliuan) from the Pioche–Caliente region of east‐central Nevada, USA. Acid maceration of samples from the Combined Metals, Comet Shale and Susan Duster Limestone members of the Pioche Formation yielded more than 2000 sclerites. Based on careful examination of these sclerites and statistical analyses of co‐occurring sclerite types, we distinguish six species, each with a restricted stratigraphic range. Chancelloria impar Moore sp. nov. is the dominant species in most upper Dyeran samples. Archiasterella cometensis Moore sp. nov. and A. auriculata Moore sp. nov. are rare in the upper Dyeran but abundant in the lowest Delamaran; A. uncinata Moore sp. nov. and C. lilioides Moore sp. nov. replace these in younger samples. A. auriculata is noteworthy for sharing features with species of both Archiasterella and Chancelloria. These results provide further support for the taxonomic tractability and biostratigraphical utility of chancelloriid sclerites; large collections from single horizons allow intraspecific variability to be assessed and species to be distinguished. Our results document a taxonomic turnover in chancelloriids at the Dyeran–Delamaran boundary, showing that not only trilobites were affected at this time. [ABSTRACT FROM AUTHOR]

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En México y en el mundo se hace cada vez más evidente la problemática del sector agrícola para producir alimentos suficientes y adecuados para satisfacer las necesidades de la población, por lo que la búsqueda de alternativas que satisfagan dicha necesidad es importante. Esta investigación muestra la validación que tiene un proyecto que centra a los cultivos hidropónicos en módulos como una alternativa de innovación tecnológica para resolver el problema. Dicha innovación consiste en poder cultivar hortalizas en espacios pequeños de las casas. Estos cultivos tienen la ventaja de producir cosechas en un menor tiempo. Para la elaboración de este proyecto se utilizaron diferentes métodos para la obtención de la información que se requirió en el proyecto de páginas oficiales y finalmente el análisis económico y financiero del proyecto se desarrolló con formato de presupuestos PROFORMA

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Pterobranchs, a major group of the phylum Hemichordata, first appear in the fossil record during the Cambrian, 1 and there are more than 600 fossil genera dominated by the mainly planktic graptolites of the Paleozoic, which are widely used as zone fossils for correlating sedimentary rock sequences. 2 Pterobranchs are rare today; they are sessile marine forms represented by Rhabdopleura , which is considered the only living graptolite, and Cephalodiscus. Unlike their sister taxon, the colonial graptolites, cephalodiscids are pseudocolonial. 3,4 Here, we describe a problematic fossil from the Silurian (Pridoli) Bertie Group of Ontario (420 mya), a sequence of near-shore sediments well known for its remarkably preserved diversity of eurypterids (sea scorpions). 5 The fossil, Rotaciurca superbus , a new genus and species, was familiarly known as Ezekiel's Wheel, 5 with reference to the unusual circular arrangement of the tubes that compose it. The structure and arrangement of the tubes identify Rotaciurca as a pterobranch, and phylogenetic analysis groups it with the cephalodiscids. We place it in a new family Rotaciurcidae to distinguish it from Cephalodiscidae. A large structure associated with the tubes is interpreted as a float, which would distinguish Rotaciurca as the only known planktic cephalodiscid—thus cephalodiscids, like the graptolites, invaded the water column. This mode of life reflects the rarity of pseudocolonial macroinvertebrates in planktic ocean communities, a role occupied by the tunicates (Chordata) known as salps today. Our estimates of divergence times, the first using relaxed total-evidence clocks, date the origins of both hemichordates and pterobranchs to the earliest Cambrian (Fortunian). [Display omitted] • A problematic fossil from the Silurian Bertie Group of Ontario is a hemichordate • Phylogenetic analysis places it with the pseudocolonial cephalodiscids • An associated conical structure is interpreted as a float • Thus, cephalodiscids, like graptolites, were present in the Silurian plankton Briggs and Mongiardino Koch describe a problematic Silurian fossil commonly known as Ezekiel's Wheel, which consists of radiating tubes associated with a conical structure interpreted as a float. Phylogenetic analyses place this fossil with cephalodiscids, indicating that, along with the more familiar graptolites, they also invaded the plankton. [ABSTRACT FROM AUTHOR]

El propósito de este trabajo es demostrar que la legitimación de activos representa un problema que debilita gobiernos, afecta economías, deteriora a la sociedad, genera corrupción y aumentos significativos en la violencia, por ende contribuye a la inseguridad ciudadana, aun cuando las autoridades policiales hagan sus mayores esfuerzos para combatir este flagelo. Cualquier ciudadano debe ser capaz de entender que eventualmente puede sufrir las consecuencias del problema y debe ser consciente de que debe aportar su granito de arena para luchar contra este flagelo. La lucha internacional contra la legitimación de activos demuestra que únicamente se puede ganar si cada ser humano, mediante la concienciación, reconoce en sus valores y en su aporte individual, las armas más poderosas para combatir este mal.

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Copyright of Revista Mexicana de Ciencias Agrícolas is the property of Instituto Nacional de Investigaciones Forestales, Agricolas y Pecuarias and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

En el presente trabajo, utilizaremos el concepto althusseriano de problemática para repensar al estructuralismo. Nuestra pregunta será: ¿cómo comprender al estructuralismo? ¿Cómo indicar sus límites cuando se trató de un conjunto de propuestas teóricas que atravesó disciplinas, que sufrió cruces con diversas teorías y cuyas premisas nunca fueron establecidas con claridad? A partir del concepto de problemática, desarrollado por Althusser fundamentalmente en La revolución teórica de Marx, se nos abrirá la posibilidad de interrogar al conjunto de propuestas teóricas que lo conformaron, no tanto como un canon aplicable a las más diversas materias sino como un espacio teórico atravesado por contradicciones. Así, nos apoyaremos en la noción de problemática porque la consideramos particularmente fértil para pensar un campo teórico más como un conjunto de problemas y preguntas que como un compendio de respuestas a dificultades teóricas claramente delimitadas. Pretendemos destacar las contradicciones que vertebran al estructuralismo porque nos conducirán a plantear que es posible emplazar una distancia en su interior, distancia que mostrará como una de sus variantes aquella que afirma la imposibilidad de pensar una estructura de estructuras final que las totalice a todas. Este hecho es el que nos pondrá delante cómo las tensiones internas del estructuralismo permiten mostrar el modo en que algunas de sus propuestas balizan el camino del posestructuralismo.

Este trabalho tem como objetivo ressaltar o papel do professor no processo ensino/aprendizagem como mediador e gerenciador do conhecimento, e não no papel de transmissor de informações e a problemática do ensino na sociedade actual. Os conteúdos ministrados em sala de aula devem ser contextualizados, considerando-se a experiência de vida do aluno e seu conhecimento de mundo. Para uma boa aprendizagem é necessário que exista uma interacção eficaz entre todos os intervenientes deste processo e para tal o professor joga um papel muito importante

Objetivo. El estudio consistió en realizar una caracterización del sistema bovinos de doble propósito y los factores que limitan la productividad de este sistema en el norte de Sinaloa, México. Materiales y Métodos. Se aplicó una encuesta a 214 productores y la información se analizó mediante un análisis de factores y de conglomerados. Resultados. El análisis de factores identificó cinco componentes; nivel de recursos, productividad, nivel tecnológico, manejo del ganado y aspectos socioeconómicos. Estos cinco factores explican el 70.5% del total de la varianza acumulada. El análisis de conglomerados identificó tres clústers: Clúster 1 (105 productores, 52.5%) se definió sistema enfocado a la producción de leche, Clúster 2 (83 productores, 41.5%) definido como explotaciones tradicionales productoras de carne y leche y Clúster 3 (12 productores, 6%) definido como explotaciones enfocadas la producción de carne. Los tres clústers presentan un manejo similar del ganado (p>0.05). Los productores de los clústers basan sus estrategias de alimentación del ganado en el pastoreo con suplementación estacional de ensilaje y concentrado comercial, no obstante, cada clúster tiene diferentes (p

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Objective. The present study consisted in characterizing the dual-purpose cattle system and the factors that limit the productivity of this system in northern Sinaloa, Mexico. Material and Methods. We applied a survey to 214 producers and we analyzed the data with analyses of factors and conglomerate. Results. The analysis of factors identified five components: resources level, productivity, technological level, livestock management and socioeconomic aspects and these components explain 70.5% of the total cumulative variance. The conglomerate analysis identified three clusters: cluster 1 (52.5%, 105 producers) defined as a system focused on milk production. Cluster 2 (41.5%, 83 producers) defined as traditional farms of meat and milk production and Cluster 3 (6%; 12 producers) defined as farms focused on meat production. The three clusters present similar livestock management (p>0.05). The producers base their feeding strategies on grazing rangeland with seasonal supplementation of silage and commercial concentrate; however, each cluster differed (p<0.05) in the level of use of these resources. Conclusion. The present study identifies, in the dual-purpose cattle system in northern Sinaloa, low milk yield and limit forage resources as main problems that results in multiple strategies that the producers follow to solve it. The social aspects and the level of resources (land, animals, machinery and equipment and infrastructure) play an important role therefore they must be considered independently to help to define differentiated technological strategies. Objetivo. El estudio consistió en realizar una caracterización del sistema bovinos de doble propósito y los factores que limitan la productividad de este sistema en el norte de Sinaloa, México. Materiales y Métodos. Se aplicó una encuesta a 214 productores y la información se analizó mediante un análisis de factores y de conglomerados. Resultados. El análisis de factores identificó cinco componentes; nivel de recursos, productividad, nivel tecnológico, manejo del ganado y aspectos socioeconómicos. Estos cinco factores explican el 70.5% del total de la varianza acumulada. El análisis de conglomerados identificó tres clústers o grupos: Clúster 1 (105 productores, 52.5%) se definió como sistema enfocado a la producción de leche, Clúster 2 (83 productores, 41.5%) definido como explotaciones tradicionales productoras de carne y leche y Clúster 3 (12 productores, 6%) definido como explotaciones enfocadas la producción de carne. Los tres clústers presentan un manejo similar del ganado (p>0.05). Los productores de los clústers basan sus estrategias de alimentación del ganado en el pastoreo con suplementación estacional de ensilaje y concentrado comercial, no obstante, cada clúster tiene diferentes (p<0.05) niveles de uso de recursos. Conclusiones. El presente estudio identifico, en los sistemas bovino de doble propósito del norte de Sinaloa, como problemas principales una baja producción de leche y escasez de forraje que se manifiesta en múltiples estrategias que siguen los productores para resolverla. Los aspectos sociales y el nivel de recursos (tierra, animales, maquinaria, equipo e infraestructura) juegan un papel importante por lo que deben de ser considerados de manera independiente para la definición de estrategias tecnológicas diferenciadas. [ABSTRACT FROM AUTHOR]