bluuebunny/crossref_metadata_2025 huggingface dataset:
Sequential Bounding Methods for Two-Stage Stochastic Programs
Authors: Gose Alexander H. , Denton Brian T.
Published: April 2016

In rare situations, stochastic programs can be solved analytically. Otherwise, approximation is necessary to solve stochastic programs with a large or infinite number of scenarios to a desired level of accuracy. This involves statistical sampling or deterministic selection of a finite set of scenarios to obtain a tractable deterministic equivalent problem. Some of these approaches rely on bounds for primal and dual decision variables of the second stage. We develop new algorithms to improve these bounds and reduce the deterministic approximation error. Experiments were conducted to compare a sequential approximation approach with and without these new algorithms. Each algorithm is applied to a set of test instances for a problem of managing semiconductor inventory with downward substitutions, where random variables only appear in the right-hand side of the second stage. Experiments were also conducted using a sample average approximation (SAA) algorithm. The sequential approximation and SAA algorithm generate a feasible solution upon termination. We directly compare the quality of these solutions using a paired student t-test.
iUrnik: Timetabling for Primary Educational Institutions in Slovenia
Authors: Ogris Vid , Kristan Tomaž , Škraba Andrej , Urh Marko , Kofjač Davorin
Published: April 2016

Slovenian primary schools must adhere to a complex curriculum imposed by the Ministry of Education, Science and Sport of the Republic of Slovenia. This complexity makes the scheduling problem challenging. To address this problem, we developed iUrnik, an interactive and automated scheduling system that generates near-optimal schedules using evolutionary computation. We developed our system to produce quality timetables for both students and teachers; however, contradictory goals make this task difficult. iUrnik addresses the complexity of assigning students to elective subjects and enables planners to add constraints and set their parameters. It also provides an advanced substitutions module, which determines and suggests the most appropriate teacher to substitute for an absent one. We used our system at three Slovenian primary schools, and the results we achieved indicate a significant improvement in the scheduling process in comparison to the previous processes these schools used.
Research Note—An Internet-Enabled Move to the Market in Logistics
Authors: Gong Fengmei , Nault Barrie R. , Rahman Mohammad S.
Published: April 2016

Logistics outsourcing has increased with the commercialization of the Internet, implying a reduction in the corresponding transaction costs. The Internet—with its universal connectivity and open standards—radically enhanced information technology (IT) capabilities, and we hypothesize this has reduced external transaction costs relatively more than internal governance costs. Using transaction cost theory as a lens, we examine whether the commercialization of the Internet coincided with a move to the market in logistics—one of the most connected industries in the economy. We estimate the relationship between IT and outsourced logistics in a production function based on two data sets from 1987 to 2008. We find that the effects of IT on outsourced logistics have changed in the post-Internet era. After the commercialization of the Internet, an industry’s own IT investment and outsourced logistics became complements, whereas they were not before. It suggests that because of the unique characteristics of the Internet as an enabler, IT reduced external transaction costs relatively more than internal governance costs. Consequently, industries favored the market form of the provision of logistics. We also find similar impacts of customers’ IT investments on a focal industry’s outsourced logistics. Previous studies argued that IT led to the shift from hierarchies to markets, or provided indirect evidence through measures of firm size or integration. Using a production theory model, our study provides systematic empirical evidence to support that the Internet enabled a move to the market in the provision of logistics.
A is for Aspirations
Authors: Sullivan Karen
Published: April 2016

It is not a lack of aspiration in working class families that prevents their children from achieving, but a lack of knowledge and access. Karen Sullivan explains
Anal metastasis as the sentinel and isolated presentation of invasive ductal breast carcinoma
Authors: Rengifo C , Titi S , Walls J
Published: April 2016

Breast cancer currently affects 1 in 8 women in the UK during their lifetime. Common sites for breast cancer metastasis include the axillary lymph nodes, bones, lung, liver, brain, soft tissue and adrenal glands. There is well documented evidence detailing breast metastasis to the gastrointestinal tract but anal metastasis is exceptionally rare. We present the case of a 78-year-old woman with an anal metastasis as the sentinel and isolated presentation of an invasive ductal breast carcinoma. As advances in the treatment of breast cancer improve, and with an ageing and expanding population, there will be an increasing number of cancer survivors, and more of these unusual presentations may be encountered in the future.
Poderosos y tiranos en la primera parte de El zapatero y el rey
Authors: Ribao Pereira Montserrat
Published: April 2016

La primera noche de la primera parte de El zapatero y el rey, en marzo de 1840, supone un punto de inflexión en la concepción del drama histórico y el primer gran éxito de Zorrilla. En este fragmento de acción el interés en la individualización y el detallado bosquejo de los rasgos de la obra (los personajes románticos son, en general, arquetipos) son elementos al servicio de la caracterización; el motor del drama ya no son los complicados conflictos históricos, los secretos familiares o las relaciones de amor imposibles que llenaban las producciones románticas de la primera tercera parte del siglo XIX, sino un tópico muy moderno: el problema de la identidad El personaje don Pedro el Cruel, el nuevo héroe romántico, está, por primera vez, claramente esbozado en el teatro de la España del XIX.
Una versión del drama El Trovador, de A. García Gutiérrez: la novela homónima de R. Ortega y Frías
Authors: Rubio Cremades Enrique
Published: April 2016

La dependencia de la novela El Trovador de R. Ortega y Frías con respecto a la célebre obra de García Gutiérrez es evidente, aunque no por ello se le puede tachar de poco original, pues introduce numerosos episodios novelescos que no aparecen en el drama.
El costumbrismo y la bohemia romántica en el Perú: un tránsito hacia la «tradición»
Authors: Valero Juan Eva María
Published: April 2016

En la tradición literaria peruana del siglo XIX, el romanticismo fue una corriente imitativa de los modelos europeos que pretendía aparentar ser una literatura genuina. En este sentido, la consolidación de la literatura tradicional para la descripción de Lima fue fundamental. La fusión de ambas corrientes otorga la apariencia de un género literario propio que los reformula: las «tradiciones peruanas» de Ricardo Palma.
José Santugini: el humorista seducido por la señorita cinematografía
Authors: Aguilar Alvear Santiago
Published: April 2016

José Santugini debe su reputación a su prolongada colaboración como guionista con el director Ladislao Vajda durante los años cincuenta. Probablemente, antes de la aparición de Rafael Azcona, fuera el escritor cinematográfico más prestigioso de su generación. Pero, además, Santugini es autor de una nutrida producción humorística, fraguada en el primer tercio del pasado siglo, que nunca llegó a publicarse en forma de libro lo que le convierte en un integrante clandestino del "otro 27".
La venganza de Don Mendo o la parodia como desafío a la estética realista
Authors: Burguera Nadal María Luisa
Published: April 2016

En el panorama teatral de la época que nos ocupa, logró continuado éxito la obra de Pedro Muñoz Seca titulada La venganza de Don Mendo (1918), calificada como "caricatura de tragedia". Nuestra propuesta es poner de manifiesto la existencia de unos elementos dramatúrgicos en la obra del escritor que fueron luego germen de lo que se denominó "humor absurdo" y que cristalizó en el "humor nuevo", peculiarmente español, de la denominada otra generación del 27, la de los humoristas.
Tres humoristas en busca del teatro: Mihura, López Rubio y Neville hacia 1950
Authors: García Ruiz Víctor
Published: April 2016

Estas páginas exploran el regreso al teatro, casi simultáneo, hacia 1950, de Miguel Mihura, José López Rubio y Edgar Neville, tres humoristas decepcionados del cine. Su reinserción teatral pone de manifiesto el callejón sin salida a que había llegado el Teatro de Humor; por eso, los tres se orientaron hacia una nueva comedia urbana que combinaba ingenio, humor, poesía, imaginación, algo de fantasía y un poco de sátira de costumbres. En suma, los fugitivos del humor se refugiaron en la comedia.
El verdugo (1964) y la tragedia grotesca
Authors: Ríos Carratalá Juan Antonio
Published: April 2016

En varias ocasiones se ha afirmado que El verdugo (1964), de Luis García Berlanga, es una película que se puede inscribir en la tragedia grotesca. El artículo hace un repaso de las coincidencias y divergencias de la citada obra con un género teatral que tuvo en Carlos Arniches uno de sus más destacados representantes.
El humor en la literatura infantil del franquismo
Authors: Sotomayor Sáez María Victoria
Published: April 2016

El período franquista no es un tiempo favorable al humor en la literatura para niños, que se utilizaba como un vehículo de adoctrinamiento, y sólo algunos autores crean historias y personajes capaces de hacer reír y sonreír. Primero con un humor suave, nada crítico o innovador, basado en personajes infantiles divertidos y en situaciones de la vida cotidiana. Después con el juego lingüístico y el disparate en poesía y relatos. Pero, sobre todo, en las historietas cómicas, con su humor directo y primario, que se ríe de la realidad sin ninguna obligación ejemplarizadora.
Una Eva moderna, última novela de Concepción Gimeno de Flaquer
Authors: Ayala Aracil María de los Ángeles
Published: April 2016

En el presente artículo se aborda la trayectoria de una autora que ha suscitado entre los estudiosos del siglo XIX escaso interés. El análisis de su última novela publicada, Una Eva moderna, permite poner de manifiesto el objetivo primordial que mueve la pluma de esta convencida feminista: la defensa de su propio sexo. Interés que se observa tanto en sus ensayos como en su producción narrativa.
El Libro de la Academia de los Nocturnos
Authors: Ferri Coll José María
Published: April 2016

Entre 1591 y 1594 se reunió en Valencia la Academia de los Nocturnos. Cada semana el Presidente encargaba a los académicos la confección de poemas consagrados a un asunto determinado, y de un discurso en prosa al académico que consideraba mejor preparado para acometer tal empresa. Por fortuna, los papeles de la Academia se conservaron, y tras pertenecer a diferentes poseedores, hoy se hallan custodiados por la Biblioteca Nacional de España. El artículo resume los aspectos principales relativos a las Actas de los Nocturnos, a sus creadores y al momento en que el cenáculo valenciano se reunió atendiendo a la idiosincrasia cultural de entonces.
Nota previa
Authors: ALEUA Anales de Literatura Española
Published: April 2016

Nota previa
Formación y maestro en La voluntad de Azorín
Authors: Ezpeleta Aguilar Fermín
Published: April 2016

En La voluntad, que representa el paradigma de la nueva narrativa, concentra Azorín sus inquietudes pedagógicas a través de la conformación de una novela de formación, conectada con los subgéneros Tendenzroman y Künstlerroman. La presencia del personaje maestro-filósofo contribuye a estructurar el contenido educativo de esta obra situada en un momento histórico en que el autor impregna de pedagogía todo lo que escribe.
La inspiración bíblica como materia estética en la narrativa de Gabriel Miró
Authors: Lozano Marco Miguel Ángel
Published: April 2016

El carácter poético de la novelística de Gabriel Miró radica, en parte, en la singular utilización que hace de sus lecturas: en su «inspiración libresca». Su biblioteca era, en opinión de Ernesto Giménez Caballero (1928) «un auténtico taller». La Biblia, una de sus lecturas fundamentales, es inagotable fuente de inspiración. Motivos tomados del Libro de Job o del Cantar de los Cantares atraviesan toda su producción literaria, desde La mujer de Ojeda (1901) hasta Años y leguas (1928). Lo más destacado es la recreación de las últimas horas de Jesucristo en Figuras de la Pasión del Señor, obra para la que, además de los Evangelios, utilizó una abundante literatura científica y filosófica, transformando, de manera sorprendente, un material tomado de estudios de «fría erudición» en textos de intensa belleza.
Lirismos negros, novelas canallas: Las lobas de arrabal, por Antonio de Hoyos y Vinent
Authors: Sáez Martínez Begoña
Published: April 2016

A partir de Las lobas de arrabal (1920) y su relación con el decadentismo se reflexiona sobre los cambios efectuados en la narrativa del cambio de siglo. La novela modernista se impregna de artificiosidad en busca de un efecto lírico, que a menudo se logra mediante la tensión entre lo bello y lo feo, lo sublime y lo canalla, lo elevado y lo abyecto. Surge de este modo un lirismo negro que constituye una pieza clave del modernismo español y que, sin embargo, en muchas ocasiones ha sido desatendido y hasta despreciado por el discurso crítico.
Sab y el juego de las miradas
Authors: Charques Gámez Rocío
Published: April 2016

En este trabajo se realiza un análisis interpretativo de Sab, novela de Gertrudis Gómez Avellaneda, a través de la mirada de los personajes. La importancia de la mirada radica en el hecho de participar en la atmósfera de misterio que se crea en esta obra romántica y en la caracterización de los personajes principales, en concreto, de Teresa y Sab.
Realismo y espacio urbano: notas sobre La Tribuna de Emilia Pardo Bazán
Authors: Thion Soriano-Mollá Dolores
Published: April 2016

A través del presente trabajo se pretende demostrar que el espacio, en La Tribuna de Emilia Pardo Bazán, desempeña un papel preponderante en el establecimiento del pacto de ficción para que la novela sea actualizada como intencionalmente realista. El estudio de los paratextos, del incipit, del primer capítulo y del diseño de La Tribuna pone de manifiesto que el espacio urbano otorga cohesión y unidad al conjunto de cuadros y estudios que componen la novela, como elemento estructurante y estético en el que se sustenta el determinismo naturalista.
La ciudad como espacio de transgresión y decadencia en la novela finisecular (la trilogía La lucha por la vida de Pío Baroja)
Authors: Hibbs Solange
Published: April 2016

El siglo XIX propicia la emergencia de una novela que quiere dar cabida a las múltiples representaciones del espacio de la ciudad, auténtico microcosmo metafórico del país. En la exhibición de ámbitos marginales, Baroja convierte en materia literaria temas relegados a la marginalidad y disemina en sus novelas, La busca, Mala hierba y, en menor medida, Aurora roja, multitud de detalles antropológicos y sociales. Acude a todo tipo de información en torno al tema de la vida de los barrios bajos y de los suburbios y los cuadros minuciosamente detallados de la miseria urbana reflejan algunas de las preocupaciones penales, sociales e incluso científicas de más resonancia entre los reformistas del siglo XIX.
Espacio urbano y guerra civil en Luciérnagas de Ana María Matute
Authors: Sotelo Vázquez Marisa
Published: April 2016

El artículo, tras la clasificación de Luciérnagas como novela de aprendizaje, pretende demostrar la función relevante que el espacio urbano ligado a un tiempo concreto, verdadero cronotopos, desempeña en la novela. El análisis demuestra que el espacio es tan potente que en algunos momentos desplaza la atención del personaje, convirtiéndose en verdadero protagonista del relato. La visión caótica y apocalíptica de la ciudad de Barcelona es el escenario de Luciérnagas pero es también metáfora, metonimia y símbolo de los personajes.
Doce cuentos peregrinos o el espacio de la pérdida: Gabriel García Márquez en el laberinto europeo
Authors: Cano Pérez Mercedes
Published: April 2016

En Doce cuentos peregrinos (1992) Gabriel García Márquez atraca en territorio europeo para dejar allí en calidad de náufragos a sus protagonistas, latinoamericanos que vagan por un continente lejano en todos los sentidos. El presente artículo pretende analizar los mecanismos constructivos de la espacialidad europea y americana (la primera como vivida, la segunda como rememoración nostálgica) en estos doce relatos. Al salir del ámbito cerrado y perfecto de Macondo, el escritor colombiano accede al reto de llevarse a sus criaturas a un entorno urbano, cambiante, capaz de traicionar su visión del mundo y su lógica vital; de esta manera se presenta lo europeo en las narraciones, como si la función de las antiguas crónicas de Indias se hubiera invertido y ahora los cronistas fuesen los americanos, deslumbrados hasta lo más profundo por la extrañeza y salvajismo racionalista de Europa. Más allá de una concepción tradicional del espacio (como marco pasivo de la trama) García Márquez utiliza el concepto en su acepción más polisémica y abierta, de manera que lo espacial marca también fronteras abstractas entre el personaje y los demás, es una ventana para bucear en la subjetividad de los protagonistas o se llena en ocasiones de valores alegóricos y simbólicos que remarcan la dicotomía evidente de la que beben todas las narraciones: el enfrentamiento entre América y Europa. En total, destacamos siete valores semánticos vinculados a la espacialidad en los relatos: el uso de la itinerancia como base constructiva de las historias, la superstición en contraste con la fría racionalidad europea, las ciudades como prefiguraciones de la muerte, el viaje religioso (o peregrinaje en sentido estricto), la construcción topográfica de la infancia, la caracterización de un espacio kafkiano, aniquilador del individuo, y el advenimiento de lo maravilloso vinculado siempre a la presencia de lo latinoamericano. Tras el análisis de estos conceptos en función de los relatos en los que aparecen, nos detendremos finalmente la última historia del conjunto, «El rastro de tu sangre en la nieve», donde a la estética gélida e invernal de la trama, se añade el hálito de los fantásticos cuentos de hadas, eso sí, con un final trágico.
Costumbrismo y prensa en la Cantabria del siglo XIX
Authors: García Castañeda Salvador
Published: April 2016

El trabajo es un estudio de las publicaciones de Cantabria durante el siglo XIX, analizando los artículos y composiciones de tipo costumbrista regional.
El Belén (1857), periódico de un día de los últimos románticos
Authors: Romero Tobar Leonardo
Published: April 2016

Mariano Roca de Togores, marqués de Molíns, era el huésped de una famosa tertulia literaria y social en el Madrid de mediados del XIX. El Belén es una publicación derivada de la tertulia tenida la noche de Navidad del año 1857, que se presentó como simulación de un diario de noticias; sólo se publicó un número en 1857 (reedición ampliada de 1886). El artículo revisa la adaptación de las colaboraciones navideñas al formato de un periódico convencional escritas por famosos escritores de mitad del siglo XIX y ofrece un índice de su contenido.
Influences of various factors on hairy root induction in Agastache foeniculum (Pursh) Kuntze
Authors: NOUROZI Elnaz , HOSSEINI Bahman , HASSANI Abbas
Published: April 2016

Agrobacterium rhizogenes is known as a natural tool of genetic engineering in many plant species. For the first time, hairy root induction in Agastache foeniculum using A. rhizogenes, rosmarinic acid content and the effect of different culture media and inoculation methods on hairy root growth rate were investigated. Hairy root culture of A. foeniculum was established by inoculation of the 1-month-old leaf explant with A4 strain of A. rhizogenes and the effectiveness of light – dark conditions and two inoculation methods (immersion and injection) were tested. Furthermore, in immersion method, the effects of inoculation time (3, 5 and 7 min) on root induction were investigated. In the second part of the study, the hairy root culture of A. foeniculum was studied using different basal culture media (MS, 1/2 MS and B5). Rosmarinic acid content in hairy roots and non- transformed roots was analyzed using high-performance liquid chromatography (HPLC). There was no significant difference between various inoculation methods in the ability of hairy roots induction. Observations showed that percentage of hairy root induction was higher when the explants were immersed for 5 min in bacterial suspension. Light conditions displayed the highest hairy root induction rates compared with dark condition. Various culture media are different in terms of types and amounts of nutrients and have influence on growth rate. The maximum growth rate (1.61 g fr wt/50 ml) of hairy roots were obtained in 1/2 MS medium. Rosmarinic acid content in transformed roots (213.42 µg/g dry wt) was significantly higher than non-transformed roots (52.28 µg/ g dry wt).
Adjusting the Warm-Glow Thermostat: How Incentivizing Participation in Voluntary Green Programs Moderates Their Impact on Service Satisfaction
Authors: Giebelhausen Michael , Chun HaeEun Helen , Cronin J. Joseph , Hult G. Tomas M.
Published: April 2016

In Study 1, the authors find that people are more satisfied with a service experience when they choose to participate in the provider's voluntary green program (e.g., recycling)—an effect mediated by the “warm glow” of participation. The downside, however, is that this same mechanism decreases satisfaction among people who choose not to participate. In Study 2, analysis of data from the J.D. Power Guest Satisfaction Index suggests that incentivizing the program (i.e., compensating the program participants) paradoxically increases satisfaction for those who do not participate but decreases satisfaction among those who do. Studies 3 and 4 explore how manipulating incentive characteristics might enable managers to maximize satisfaction for both groups. Study 3 indicates that, compared with no incentive, an “other-benefiting” incentive increases warm glow and satisfaction for green program participants but decreases them among nonparticipants. Study 4, however, suggests that mixed incentive bundles (i.e., providing both self-benefiting and other-benefiting options) maximize warm glow and satisfaction for both groups—the ideal outcome for managers.
Factors related to common bottlenose dolphin (Tursiops truncatus) seasonal migration along South Carolina and Georgia coasts, USA
Authors: Taylor Anna R , Schacke John H , Speakman Todd R , Castleberry Steven B , Chandler Richard B
Published: April 2016

Little is known about common bottlenose dolphin
(Tursiops truncatus) seasonal migration along the United
States southeastern Atlantic coast, or what factors influence
migratory patterns. Therefore, our objectives were to: 1)
document evidence for seasonal movement of dolphins in
this region (that would indicate migratory behavior) and 2)
determine if seasonal changes in abundance and temporary
emigration (i.e., migration indicators) for dolphins along
South Carolina and Georgia coasts are related to changes
in water quality variables. Previously collected capturerecapture
data (from visual sightings of individual
dolphins) and water quality data from Charleston, South
Carolina and St. Catherine’s Island, Georgia were used to
achieve our objective. Robust design models were used to
estimate seasonal abundance and temporary emigration
for the Charleston population, whereas closed population
capture-recapture models were used to estimate seasonal
abundances for the St. Catherine’s Island population.
The Charleston population showed seasonal abundance
and temporary emigration patterns with low estimates in
winter, which increased in spring, peaked in summer, and
decreased in fall. Seasonal temporary emigration was best
explained by water temperature, which followed the same
general pattern. Seasonal abundance in the St. Catherine’s
population was best explained by salinity, but no consistent
pattern in abundance was observed. Our results not only
provide the first evidence of a clear seasonal migration of
dolphins in this region, but can aid in conservation and management efforts by increasing accuracy of abundance
estimates.
Social Mechanisms as Special Cases of Explanatory Sociology: Notes toward Systemizing and Expanding Mechanism-based Explanation within Sociology
Authors: Maurer Andrea
Published: April 2016

The revival of action based explanations as well as their formal structuring have been two of the most important topics within explanatory sociology since the 1980s. The two newly developed approaches, being structural individualism and analytical sociology based on mechanism models, will be outlined in this article. The article is dedicated to a comparison of the aims and the formal structure of both approaches. It is shown that explanations within analytical sociology tend to be more realistic but also more complex. They do not differentiate between micro and macro levels in analytical terms and use micro mechanisms instead of an analytically strong action theory that makes it difficult to systemize mechanism models. On the other hand, structural individualistic explanations that use a general action law from which social interdependencies are to be interpreted as an opportunity structure can formulate a default-option from which models can be expanded and also worked out to mechanism types.
Contextualizing Cognitive Consonance by a Social Mechanisms Explanation: Moderators of Selective Exposure in Media Usage
Authors: Becker Dominik , Beckers Tilo , Franzmann Simon Tobias , Hagenah Jörg
Published: April 2016

While many studies from analytical sociology apply agent-based modeling to analyze the transformational mechanisms linking the micro to the macro level, we hold the view that both situational and action formation mechanisms can rather be unveiled by means of more advanced quantitative methods. By focusing on selective exposure to quality newspapers, our study has both an analytical and a substantive aim. First., our analytical aim is to amend the psychological mechanism of avoiding cognitive dissonance by social mechanisms allowing postulates on how the selective exposure effect might vary by particular social groups. Second, our substantive aim is to set the ground for a longitudinal analysis of selective exposure to quality papers by placing these social mechanisms in the context of social and cultural change. By referring to hypothetical data, we illustrate which kind of (multilevel) moderator effects would have to hold if our hypotheses were true.
The Use of Field Experiments to Study Mechanisms of Discrimination
Authors: Keuschnigg Marc , Wolbring Tobias
Published: April 2016

This paper discusses social mechanisms of discrimination and reviews existing field experimental designs for their identification. We first explicate two social mechanisms proposed in the literature, animus-driven and statistical discrimination, to explain differential treatment based on ascriptive characteristics. We then present common approaches to study discrimination based on observational data and laboratory experiments, discuss their strengths and weaknesses, and elaborate why unobtrusive field experiments are a promising complement. However, apart from specific methodological challenges, well-established experimental designs fail to identify the mechanisms of discrimination. Consequently, we introduce a rapidly growing strand of research which actively intervenes in market activities varying costs and information for potential perpetrators to identify causal pathways of discrimination. We end with a summary of lessons learned and a discussion of challenges that lie ahead.
Ultrafast Anisotropic Optical Response and Coherent Acoustic Phonon Generation in Polycrystalline BaTiO3-BiFeO3
Authors: Magill Brenden A. , Park Kyoung-Duck , Zhou Yuan , Chopra Anuj , Maurya Deepam , Priya Shashank , Raschke Markus , Belyanin Alexey , Stanton Christopher J. , Khodaparast Giti A.
Published: April 2016

We optically study the as-yet little explored multiferroic material, BaTiO3-BiFeO3 (BTO-BFO), that has demonstrated enhanced magnetic properties, a higher DC resistance in comparison to BFO, and improved magnetoelectric coupling. Our studies include: ultrafast time resolved differential reflection, optically induced birefringence, and second-harmonic nano-imaging of the ferroic order. We observe a strong sensitivity to pump/probe polarizations, photo-induced ferroelectric poling on a picosecond timescale, as well as the generation of photo-induced coherent acoustic phonons with a frequency of

∼
11

$ \sim 11$

 GHz. The second-harmonic generation nano-imaging reveals disordered but distinct ferroelectric domain order, percolating even across grain boundaries in the poly-crystalline thin film.
Method for the integral calculation of the fiber orientation and the fundamental material properties of softwood logs and lumber
Authors: Guindos Pablo
Published: April 2016

An integral calculation method (ICM) is presented for fully estimating the fiber orientation and fundamental physical and mechanical properties of softwood (SW) logs and lumber. The proposed ICM reproduces with great detail the most important anatomical features of SW, including annual rings, seasonal variations, main growth patterns (straight, spiral, and interlocked grain), and especially fiber distortions due to knot clusters for each annual ring. The failure load of the lumber has been predicted with an absolute error of 10.2%. In addition, the ICM has shown very strong robustness and high calculation speed as most of the calculations are performed analytically, and only one final simplistic computation is conducted by finite element analysis (FEA). This article describes the proposed ICM in detail and shows the initial verification with experiments. The ICM should contribute not only to lumber research and grading but also to research and optimization of logging and sawing industrial processes.
Scientific evidence of plant with a rapid-onset and sustained antidepressant effect in a chronic model of depression: Mallotus oppositifolius
Authors: Kukuia Kennedy K.E. , Ameyaw Elvis O. , Woode Eric , Mante Priscilla K. , Adongo Donatus W.
Published: April 2016

Background:

One of the major drawbacks of current depression pharmacotherapy is the delay in symptom improvement, aside from the untoward side effects and lack of efficacy against refractory depression. This work therefore investigated a possible rapid-onset and sustained antidepressant effect of Mallotus oppositifolius.

Methods:

Onset of the antidepressant effect of hydroalcoholic extract from the leaves of M. oppositifolius was investigated using the open space swim test, a chronic depression model. The possible effects of the extract on cognitive dysfunction measured in the Morris water maze and weight gain were also investigated.

Results:

M. oppositifolius extract, after the first day of treatment, reversed the state of immobility in mice. This effect was sustained even after drug treatment was halted and the antidepressant effect verified in the tail suspension test. The extract also increased the total distance travelled by the mice and reversed the cognitive impairment induced by the depressed state but had no effect on weight variation.

Conclusions:

M. oppositifolius exhibits a rapid-onset and sustained antidepressant effect in mice.
CB1 cannabinoid receptor-mediated increases in cyclic AMP accumulation are correlated with reduced Gi/o function
Authors: Eldeeb Khalil , Leone-Kabler Sandra , Howlett Allyn C.
Published: April 2016

Background: CB1 cannabinoid receptors (CB1Rs) stimulate Gi/o-dependent signaling pathways. CB1R-mediated cAMP increases were proposed to result from Gs activation, but CB1R-stimulated GTPγS binding to Gs has not heretofore been investigated.

Methods: Three models of CB1R-stimulated cAMP production were tested: pertussis toxin disruption of Gi/o in N18TG2 cells; L341A/A342L-CB1R expressed in Chinese hamster ovary (CHO) cells; and CB1 and D2 dopamine receptors endogenously co-expressed in MN9D cells. cAMP was assayed by [3H]cAMP binding competition. G protein activation was assayed by the antibody-targeted scintillation proximity assay.

Results: In L341A/A342L-CB1-CHO cells, cannabinoid agonists significantly stimulated cAMP accumulation over vehicle; (–)-3-[2-hydroxyl-4-(1,1-dimethylheptyl)phenyl]-4-[3-hydroxyl propyl] cyclohexan-1-ol (CP55940)-stimulated [35S]GTPγS binding to Gi1/2/3 was reversed, whereas binding to Gs was not different from CB1R. In MN9D cells, CB1 agonist HU210 or D2 agonist quinpirole alone inhibited forskolin-activated cAMP accumulation, whereas HU210 plus quinpirole increased cAMP accumulation above basal. HU210 alone stimulated [35S]GTPγS binding to Gi1/2/3, whereas co-stimulation with quinpirole reversed HU210-stimulated [35S]GTPγS binding to Gi1/2/3.

Conclusions: CB1R couples to Gs but with low efficacy compared to Gi/o. The L341A/A342L mutation in CB1R reversed CP55940 activation of Gi to an inhibition, but had no effect on Gs. Combined CB1 plus D2 agonists in MN9D cells converted the CB1 agonist-mediated activation of Gi to inhibition of Gi. In these models, the CB1 agonist response was converted to an inverse agonist response at Gi activation. Cannabinoid agonist-stimulated cAMP accumulation can be best explained as reduced activation of Gi, thereby attenuating the tonic inhibitory influence of Gi on the major isoforms of adenylyl cyclase.
Central diabetes insipidus as a very late relapse limited to the pituitary stalk in Langerhans cell histiocytosis
Authors: Nakagawa Shunsuke , Shinkoda Yuichi , Hazeki Daisuke , Imamura Mari , Okamoto Yasuhiro , Kawakami Kiyoshi , Kawano Yoshifumi
Published: April 2016

Central diabetes insipidus (CDI) and relapse are frequently seen in multifocal Langerhans cell histiocytosis (LCH). We present two females with multifocal LCH who developed CDI 9 and 5 years after the initial diagnosis, respectively, as a relapse limited to the pituitary stalk. Combination chemotherapy with cytarabine reduced the mass in the pituitary stalk. Although CDI did not improve, there has been no anterior pituitary hormone deficiency (APHD), neurodegenerative disease in the central nervous system (ND-CNS) or additional relapse for 2 years after therapy. It was difficult to predict the development of CDI in these cases. CDI might develop very late in patients with multifocal LCH, and therefore strict follow-up is necessary, especially with regard to symptoms of CDI such as polydipsia and polyuria. For new-onset CDI with LCH, chemotherapy with cytarabine might be useful for preventing APHD and ND-CNS.
Crystal structure of 4,5-diphenylthiazol-2-amine, C15H12N2S
Authors: Ghabbour Hazem A. , Abdel-Aziz Hatem A. , AlRabiah Haitham , Alruqi Obaid S.
Published: April 2016

C15H12N2S, monoclinic, P21/c (no. 14), a = 6.8853(3) Å, b = 23.8495(10) Å, c = 7.5689(3) Å, β = 96.585(2)°, V = 1234.70(9) Å3, Z = 4, R
gt
(F) = 0.0506, wR
ref
(F
2
) = 0.1243, T = 100 K.
Crystal structure of bis(ethanaminium) poly[bis(hexaselenido-κ
2
Se
1,Se
6)palladate(II)], C4H16N2PdSe12
Authors: Kim Kang-Woo , Wang Di
Published: April 2016

C4H16N2PdSe12, monoclinic, C2/c (No. 15), a = 16.8578(5) Å, b = 7.6646(2) Å, c = 16.7440(5) Å, β = 94.7894(15)°, V = 2155.91(11) Å3, Z = 4, R
gt
(F) = 0.0351, wR
ref
(F
2
) = 0.0722, T = 173 K.
Effect of Hydrostatic Pressure on BiS2-Based Layered Superconductors: A Review
Authors: Jha Rajveer , Awana V.P.S.
Published: April 2016

We report impact of hydrostatic pressure on the
newly discovered BiS2 based superconductors. In last couple
of years the new BiS2 based superconductor attracted
great attention of the condensed matter physics community.
These new layered BiS2-based compounds are very
sensitive to the concentration of carriers doping and pressure
that cause profound changes in their physical properties
with appearance of superconductivity in the vicinity
of their insulating/semiconducting state. The BiS2-based
new compounds are expected to provide us with the next
stage of exploring new superconductors and to discuss
their exotic superconductivity mechanisms. In current review,
we present most of our findings related to impact
of hydrostatic pressure on superconductivity of new BiS2
based superconductors at one place.
Effects of epoxidized natural rubber as a compatibilizer on latex compounded natural rubber-clay nanocomposites
Authors: Tan Jing-Hua , Wang Xiao-Ping , Liu Yi-Wu , Luo Yuan-Fang , Jia De-Min , Liu Yue-Jun , Xiong Yu-Feng , Wang Wen-Tao
Published: April 2016

Natural rubber (NR)/montmorillonite (MMT) nanocomposites compatibilized with epoxidized natural rubber (ENR) were produced by latex compounding method. The effects of ENR as a compatibilizer on NR/MMT nanocomposites were investigated. The addition of ENR brought intercalation or exfoliation of the clay, which improved the clay dispersion in the rubber matrix, as characterized by X-ray diffraction (XRD) and transmission electronic microscopy (TEM). The interfacial interaction of ENR with MMT was investigated by Fourier transform infrared spectroscopy (FTIR). The vulcanization was hindered by the incorporation of ENR, while the mechanical performances, thermal stability and ageing resistance were improved. The glass transition temperature and storage modulus increased with ENR loading, which was corroborated by dynamic mechanical analysis (DMA).
Synthesis and investigation of new cyclic haloamidinium salts
Authors: Rais Eduard , Flörke Ulrich , Wilhelm René
Published: April 2016

The presented work describes the synthesis of new six- and seven-membered haloamidinium salts and their reaction with different metals. The isolated metal complexes were tested in a catalytic reaction. Two different synthetic routes were applied to prepare five different salts. Chloroamidinium salts were very water-sensitive in comparison to their corresponding bromoamidinium salts. Hence, the preparation of the less sensitive bromoamidinium salts was higher prioritized. The formed salts were converted with metal sources to N-heterocyclic carbene (NHC) metal complexes through an oxidative insertion into the C–X bond. This type of formation is less examined for the synthesis of extended NHC metal complexes. Pd(PPh3)4and cobalt powder were applied as metal sources, whereby two palladium complexes were isolated, characterized, and their crystal and molecular structures determined. The palladium complexes were investigated in the Suzuki-Miyaura reaction and showed promising catalytic activity.
A Critique of Carceral Feminist Arguments on Rape Myths and Sexual Scripts
Authors: Gurnham David
Published: April 2016

Given the seriousness for both women and men of misunderstanding or miscategorising sexual victimization and coercion, scholarly engagement with this topic must be self-critical and careful about its methods and conclusions. This article seeks to test the plausibility and justifiability of some key claims made within feminist scholarship as regards the implications of the traditional sexual script and the prevalence and impact of the “real rape” myth. The criticisms offered below with respect to these claims identify three problems: (a) that evidence that would challenge carceral feminists’ framing of the traditional sexual script as essentially a blueprint for rape is either marginalized or excluded from consideration altogether; (b) that within that framing the scripted roles of the coercive male and the passive female who is victimized have been allowed to solidify into immovable and immutable stereotypes; (c) that studies purporting to show that rape myth acceptance is highly prevalent and influential on popular attitudes are flawed in ways hitherto not fully acknowledged or explored.
MOTİVASYON ARAÇLARININ ÖRGÜTSEL BAĞLILIK ÜZERİNDEKİ ETKİSİ: KAMU KURUMLARINDAKİ X VE Y KUŞAĞI KARŞILAŞTIRMASI
Authors: Kerse Gökhan
Published: April 2016

Bu çalışma, motivasyon araçlarının (içsel ve dışsal) örgütsel bağlılık (normatif, devamlılık ve duygusal bağlılık) üzerindeki etkisini ortaya çıkarma amacıyla yapılmıştır. Çalışmada X ve Y Kuşağının motivasyon araçlarını önemseme düzeyi ve örgütsel bağlılıkları da karşılaştırılmıştır. Bu doğrultuda, 171 kamu kurumu çalışanından anket yöntemiyle veriler toplanmıştır. Toplanan veriler SPSS paketleme programıyla analiz edilmiştir. Analiz sonucundaki en temel bulgu; örgütsel bağlılık üzerinde dışsal motivasyon araçlarının etkisinin olduğudur. Ayrıca, çalışmadaki analizlere yönelik tüm bulgular yazındaki çalışmalarla karşılaştırılmıştır.
MATERYALİZM, ÖZ-BENZEŞİM VE BİREYSELCİLİĞİN KİŞİSELLEŞTİRİLMİŞ REKLAM KAMPANYALARINA YÖNELİK TUTUMLAR VE BU KAMPANYALARI SOSYAL AĞLARDA PAYLAŞMA NİYETİ ÜZERİNDEKİ ETKİLERİ
Authors: Cengiz Hakan , Özkara Behçet Yalın
Published: April 2016

Bu çalışmanın amacı tüketicilerin materyalizm, bireyselcilik ve öz-benzeşim düzeylerinin kişiselleştirilmiş reklam kampanyalarına yönelik tutumları ve bu tür kampanyaları sosyal ağlarda paylaşma niyetleri üzerindeki etkilerini incelemektir. Bu amaçla, verilerin toplanmasında kolayda örnekleme yöntemi benimsenmiş, sosyal medya üzerinden kullanıcılar çalışmaya davet edilmiş ve bu daveti ağlarındaki diğer kişilerle paylaşmaları istenmiştir.  Çalışma kapsamında elde edilen 144 veri, Smart PLS paket programı aracılığıyla analiz edilmiştir. Araştırma sonuçları tüketicilerin markaya yönelik öz benzeşim düzeylerinin ilgili markanın kişiselleştirilmiş reklam kampanyalarına yönelik tutum ve ilgili reklam kampanyasını sosyal ağlarda paylaşma niyeti üzerinde olumlu yönde anlamlı etkileri olduğuna işaret etmektedir. Ayrıca elde edilen bulgular, tüketicilerin materyalizm düzeyleri ve kampanyaya yönelik tutumlarının ilgili kampanyayı sosyal ağlarda paylaşma niyeti üzerinde olumlu yönde anlamlı etkileri olduğunu göstermektedir.
CİNSİYETİN İŞ DOYUMU ÜZERİNDEKİ ETKİSİ: KAMU ÇALIŞANLARI ÜZERİNDE BİR ARAŞTIRMA
Authors: FİDAN Yahya , ERCAN Sertaç , YILMAZER Aydın , ŞEHİRLİ Mustafa
Published: April 2016

İş doyumu, insanın yaptığı işten zevk almasını, tatmin olmasını ve hayat kalitesini ifade etmektedir. Bu araştırmanın temel amacı, hem çalışanlar ve hem de örgütler açısından önemli bir unsur olan iş doyumu üzerindeki cinsiyet değişkenin etkisini incelemektir. İnsan kaynaklarının işi hakkında hissettiği duygu olarak tanımlanan iş doyumu; iş verimliliği, çalışan devamlılığı, performans gibi örgütlerin başarısını etkileyen birçok kavram arasında önemli bir yere sahiptir. Bu çerçevede, Karabük ilindeki bir kamu kurumunda çalışan insan kaynaklarının, iş doyum durumları, iş doyum ölçeği ile ölçümü ve cinsiyetin iş doyumu üzerindeki etkileri incelemiştir. Bu inceleme anket yöntemiyle elde edilen verilerin analiz edilip yorumlanması ile gerçekleştirilmiştir. Analiz sonuçlarına göre iş doyum ölçeğinde yer alan bazı yargıların cinsiyet ile anlamlı olarak farklılaştığı görülmüştür. Anlamlı bulunan yargıların yöneticilerce dikkate alınması, insan kaynaklarının moral ve motivasyonlarını arttırarak örgütsel etkinliğe katkıda bulunacak ve daha yaşanabilir örgütlerin oluşturulmasına hizmet edebilecektir.
Maintenance management program through the implementation of predictive tools and TPM as a contribution to improving energy efficiency in power plants
Authors: Fonseca-Junior Milton , Holanda-Bezerra Ubiratan , Cabral-Leite Jandecy , Reyes-Carvajal Tirso L.
Published: April 2016

This paper presents an application method of a Maintenance Management Program through the implementation of predictive tools and the Total Productivity Maintenance (TPM) methodology as a contribution for the energy efficiency improvement in thermoelectric power plants. The results of the vibration analysis, lubricating oil condition and of the thermograph analysis are registered as diagnostic methods. The innovative advance in this paper was the application of four pillars from the TPM methodology at the control of the internal combustion engines efficiency at a thermoelectric power plant. This research has the objective to provide a more reliable maintenance process through the implementation of the measurement and control of the operating parameters of the plant resulting in a better management by reducing the stops due unforeseen problems. Some results of the methodology application were shown like: annual maintenance cost reduction due corrective maintenance, increase of the mean time between failure (MTBF) and reduction of the mean time to repair (MTTR) in all applied areas. These results reflected in a more reliable power generation without putting the facilities of the plant at risk with an annual cost reduction for the company.
Motivation and self-esteem in university students’ adherence to physical activity
Authors: Solange Lages Solange Lages , Emygdio Rogério , Monte Aurinice , Alchieri João
Published: April 2016

This study aimed to determine the association between motivation, self-esteem and body composition in university students' adherence to physical activity.

Methods A total of 110 undergraduates from two public universities (Federal and State) in Teresina, Piauí state volunteered for the study. Of these, 75 (68.2 %) were women aged between 18 and 35 years, and 82 (74.5 %) of the students engaged in physical activity. They responded to the Gonçalves Motivation Scale (2010), which contains five factors: Fun, Competency, Appearance, Health and Sociability. Participants also completed the Lages Self-esteem Scale, with sixteen items and five dimensions: Introspection, Physical Image, Life Satisfaction, Acceptance and Confidence. The Jackson and Pollock (1978 and 1980) 3-site skinfold protocol was used to measure fat percentage and body composition by anthropometry (Filizola scale equipped with stadiometer).

Results A significant association between the variables of self-esteem and motivation was demonstrated, with the physical image dimension exhibiting the highest association with the motivational factors fun, competency and sociability. Conclusion The findings indicate that adherence to physical activity is associated to motivational factors derived from challenging, integrative and fun-related circumstances.
Identificación de bacterias y hongos en el aire de Neiva, Colombia
Authors: Méndez Puentes Carlos Alberto , Camacho Suarez Juan Guillermo , Echeverry Hernandez Sonia
Published: April 2016

Aislar e identificar microorganismos (bacterias y hongos) presentes en el aire de la zona urbana de la ciudad de Neiva en el periodo comprendido entre la época de sequía y la época de lluvias durante el año 2012

Materiales y Métodos Se emplearon dos métodos para la recolección de la muestra: sedimentación en placa y un bioimpactador M Air T de Millipore en los cuales se dispensaron los medios Agar tripticasa soya (ATS) para el crecimiento de bacterias y agar gentamicina-glucosa-extracto de levadura (GGY) para el  crecimiento de hongos; como colorantes se emplearon la tinción de Gram y la tinción con azul de lactofenol. Cuando fue necesario se empleó KOH al 10 %.

Resultados El género Aspergillus spp. y los bacilos grampositivos fueron los microorganismos predominantes en las distintas zonas de muestreo, mientras que los géneros Aureobasidium sp. y bacilos gramnegativos presentaron frecuencia de aparición ocasional y rara, ya que no son considerados microorganismos propios del aire.

Conclusiones La carga microbiana fue mayor en la época de sequía con respecto a la época de lluvias, presentándose más crecimiento bacteriano que fúngico en las dos temporadas del año. Con el uso del bioimpactador se observó mayor crecimiento tanto de bacterias como de hongos en comparación con el método de sedimentación en placa.