bluuebunny/crossref_metadata_2025 huggingface dataset:
Factors influencing households’ participation in forest management in the northern region of Ghana
Authors: Mohammed Jamal , Osei-Fosu Anthony Kofi , Yusif Hadrat
Published: December 2017

This study assessed the factors influencing households’ participation in forest management. The specific objective was to identify the determinants of households’ participation in forest management in the Northern Region of Ghana. The study used the purposive sampling to sample respondents from six (6) communities within the Tamale forest districts and the sample size was three hundred and seventy (370). The logistic regression result showed that, sex, age, household size, education, marital status, benefit and location of the forest influenced households’ participation in forest management. The results showed that, all the sociodemographic characteristics of the respondents were significant in determining participation in forest management. The study recommended that, the government of Ghana should intensify awareness creation and public education on the need for collaborative forest management between local communities and forest management staff.
Analysis of the economic viability of a rural tourism enterprise in Brazil: an application of the Monte Carlo Method
Authors: Amorim Fernando Rodrigues , Ferreira Silveira Bianca Regina , Dos Santos Edilene Alves , Camargo de Abreu Pedro Henrique , Tostes Juliana Rosa
Published: December 2017

The acquisition of projects aimed at rural tourism represents an alternative for generating income. The objective of this study was to evaluate the viability of purchasing a farm that is structured as a hostel, located in Joanópolis, interior of São Paulo, Brazil. The method was based on exploratory research based on a case study comparing the economic viability of this project. However, this viability is surrounded by uncertainties and risks. With this, the Monte Carlo method was used to analyze this probability. The data were obtained through the Department of Tourism in the city of Joanópolis from primary and secondary data. The calculations were made for work during a year drawn up in a cash flow with the monthly expenses of the hostel. From the results it was concluded that it is feasible to buy this hostel in the real and optimistic scenario and in the Monte Carlo method analyzing the project’s total NPV values
Double Mental Discounting: When a Single Price Promotion Feels Twice as Nice
Authors: Cheng Andong , Cryder Cynthia
Published: December 2017

This research finds that when a single gain has strong associations with multiple costs, consumers often mentally deduct that gain from perceived costs multiple times. For example, with some price promotions (e.g., spend $200 now and receive a $50 gift card to spend in the future), consumers mentally deduct the value of the price promotion from the cost of the first purchase when they receive the promotion, as well as from the cost of the second purchase when they use the promotion. Multiple mental deductions based on a single gain result in consumers' perceptions that their costs are lower than they actually are, which can trigger higher expenditures. This mental accounting phenomenon, referred to as “double mental discounting,” is driven by the extent to which gains feel associated, or coupled, with multiple purchases. This article also documents methods to decouple promotional gains from purchases, thus mitigating double mental discounting.
Are you Back for Good or Still Shopping Around? Investigating Customers' Repeat Churn Behavior
Authors: Kumar V. , Leszkiewicz Agata , Herbst Angeliki
Published: December 2017

Service firms develop win-back strategies to rectify issues that cause customer churn and rebuild relationships with lost customers. To better support retention, it is important to understand how the revived relationship evolves and possibly ends again. To examine customers' repeat churn behavior, we develop a “mixture cure-competing risks” model, jointly estimating the duration of second lifetimes, multiple reasons for churn, and heterogeneity of customers in exhibiting a related churn reason. The proposed model is tested using a data set from a large telecommunications provider including information on customer behavior and marketing activities during customers' first and second lifetimes. We find support for the existence of a “cured” group of returning customers, defined as those who are not susceptible to churn for the same reason they churned previously. Our findings suggest that mitigating repeat churn behavior can extend customers' second lifetime tenure and increase profitability by $150,000 over the lifetime of the customers in the sample (leading to gains of over $15 million for deferring second-lifetime churn in a million returning customers), depending on the type of churn.
The long non-coding RNA CRNDE promotes cervical cancer cell growth and metastasis
Authors: Meng Yuanyuan , Li Qi , Li Lianwei , Ma Rong
Published: December 2017

This study was intended to analyze effects of lncRNA CRNDE on cervical cancer cell growth and metastasis. Fifty pairs of cervical cancer tissues and corresponding adjacent tissues were collected. Expressions of long non-coding RNAs (lncRNAs) in tissue samples were detected by microarray analysis. Expression levels of CRNDE in cervical cancer cells and normal cells were detected by qRT-PCR. Cell-counting kit-8 (CCK-8) assay and clone formation assay were utilized to evaluate cell growth. Wound healing assay and Transwell assay were conducted to detect the migratory and invasive capability of cervical cancer cells. The expressions of CRNDE in cervical cancer tissues and cells were higher than those in normal tissues and cells. CCK-8 assay and clone formation assay showed that the knockdown of CRNDE could inhibit the cell proliferation of HeLa and C-33A cells. Wound healing assay indicated that the downregulation of CRNDE expression could suppress the cell migration. The result of a Transwell assay demonstrated that the number of invasion cells reduced in the CRNDE-si group in comparison with the Mock group. LncRNA CRNDE could promote the cell growth and stimulate the metastasis of cervical cancer cells.
Tragicomedy and Literary Decorum: Theoretical Foundations of the “Third Dramatic Genre” in the Origins of Spanish Theater
Authors: Mañero-Lozano David
Published: December 2017

This paper, which evaluates the theoretical underpinnings of tragicomedy, examines the ideas on literary decorum that formed the basis for the traditional definitions of the different dramatic genres. Within this context, an argument is made that the emergence of the ‘third genre’ was associated with changing views on the adaptation of theater to bring it into line with the concept of literary
Analysis of a regularized model for the isothermal two-component mixture with the diffuse interface
Authors: Balashov Vladislav , Zlotnik Alexander , Savenkov Evgeny
Published: December 2017

A regularized system of equations describing a flow of isothermal two-component mixture with diffuse interface is studied. The equation of energy balance and its corollary, i.e., the law of non-increasing of the total energy are derived under general assumptions on the Helmholtz free energy of the mixture. Necessary and sufficient conditions for linearized stability of constant solutions are obtained (in particular case). A difference approximation of the problem is constructed in the two-dimensional periodic case on a nonuniform rectangular grid. The results of numerical experiments demonstrate a qualitative well-posedness of the problem and the applicability of the criterion of linearized stabilization in the original nonlinear formulation.
The method of hypersingular integral equations in the problem of electromagnetic wave diffraction by a dielectric body with a partial perfectly conducting coating
Authors: Setukha Alexey V. , Bezobrazova Elizaveta N.
Published: December 2017

A problem of scattering of a monochromatic electromagnetic wave by a homogeneous dielectric body is considered. A part of the boundary of the body is a perfectly conducting thin surface. The problem is reduced to a system of the boundary integral equations containing integrals with strong singularity, the integrals are understood in terms of Hadamard final part. A numerical solution scheme is constructed on the base of approximate solution of these equations using the methods of piecewise-constant approximations and collocation. The constructed numerical scheme is tested on a model example.
The date of the Martyrdom of Simeon bar Sabba’e and the persecution of Christians in Persia under Shapur II
Authors: Kosiński Rafał
Published: December 2017

The article is a contribution to the more than one-hundred-year-long discussion on the date of death of Simeon bar Sabba’e, metropolitan bishop of Seleucia-Ctesiphon, and the beginning of the persecution of Christians in Persia during the reign of Shapur II. The author stresses the point that the main source on Simeon’s martyrdom is a hagiographical work and, as such, it should be interpreted strictly on the basis of the principles relevant to the genre. Taking some of the hypotheses formulated to date into consideration, the author holds the view that it is not possible to determine the precise date of Simeon’s death. It could only be assumed that it must have occurred somewhere between February 344 and July 345, most likely in late 344.
Effects of hypothalamic leptin gene therapy on osteopetrosis in leptin-deficient mice
Authors: Philbrick Kenneth A , Martin Stephen A , Colagiovanni Amy R , Branscum Adam J , Turner Russell T , Iwaniec Urszula T
Published: December 2017

Impaired resorption of cartilage matrix deposited during endochondral ossification is a defining feature of juvenile osteopetrosis. Growing, leptin-deficientob/obmice exhibit a mild form of osteopetrosis. However, the extent to which the disease is (1) self-limiting and (2) reversible by leptin treatment is unknown. We addressed the first question by performing histomorphometric analysis of femurs in rapidly growing (2-month-old), slowly growing (4-month-old) and skeletally mature (6-month-old) wild-type (WT) andob/obmale mice. Absent by 6 months of age in WT mice, cartilage matrix persisted to varying extents in distal femur epiphysis, metaphysis and diaphysis inob/obmice, suggesting that the osteopetrotic phenotype is not entirely self-limiting. To address the second question, we employed hypothalamic recombinant adeno-associated virus (rAAV) gene therapy to restore leptin signaling inob/obmice. Two-month-old mice were randomized to one of the three groups: (1) untreated control, (2) rAAV-Leptin or (3) control vector rAAV-green fluorescent protein and vectors injected intracerebroventricularly. Seven months later, rAAV-leptin-treated mice exhibited no cartilage in the metaphysis and greatly reduced cartilage in the epiphysis and diaphysis. At the cellular level, the reduction in cartilage was associated with increased bone turnover. These findings (1) support the concept that leptin is important for normal replacement of cartilage by bone, and (2) demonstrate that osteopetrosis inob/obmice is bone-compartment-specific and reversible by leptin at skeletal sites capable of undergoing robust bone turnover.
Primera aproximación estructuralista a la teoría del origen en común
Authors: Blanco Daniel
Published: December 2017

Este trabajo constituye una primera aproximación (desde la perspectiva ofrecida por la concepción estructuralista de las teorías científicas) a la teoría del origen en común (TOC) tal como aparece en On the Origin of Species, de Charles Darwin. Luego de exponer las diferencias entre esta teoría y la teoría de la selección natural y la teoría de la evolución, se presentan algunos debates en torno a la determinación de homologías (el explanandum de la teoría), el vocabulario de la teoría y su ley fundamental. Finalmente, se discute la TOC-teoricidad de los términos involucrados y los candidatos a especializaciones de TOC (apelando a nuevos elementos teóricos incorporados con posterioridad a 1859).
Construcción de los espacios decisorios en México
Authors: García Sécoya
Published: December 2017

En México, las organizaciones sociales y civiles han incentivado y provisto alentadoras formas de coparticipación democrática en políticas públicas para el desarrollo social, económico, político, cultural y ambiental del país. Así pues, el caso del Diagnóstico y Programa de Derechos Humanos del Distrito Federal es un ejemplo, sin precedente en México, de cooperación democrática para la toma de decisiones consensuadas entre los gobiernos y la sociedad civil organizada. El proceso coparticipativo para la realización del Diagnóstico y Programa en materia de Derecho al Agua en la ciudad de México permite proponer a la democracia participativa de tipo consensual como una forma de gobierno más adecuado en la que la sociedad civil incida en políticas públicas a partir de nuevos espacios decisorios para el desarrollo democrático del país y de la región.
Algunas observaciones sobre la noción kantiana de simultaneidad.
Authors: Oroño Matías Hernán
Published: December 2017

Se comparan los análisis sobre la simultaneidad que Kant efectúa  en la “Tercera Analogía de la Experiencia” (KrV) y en la “Analítica de lo sublime” (KU) con el fin de comprender las diferencias entre ambos enfoques. Se intenta demostrar que la intuición de la simultaneidad tal como es desarrollada en el marco de lo sublime subyace a las unidades fundamentales de síntesis mencionadas en los “Axiomas de la intuición” (KrV). Asimismo, se señala que la intuición de la simultaneidad tal como es explicada en la “Analítica de lo sublime” (KU) no se identifica necesariamente con la noción de “magnitud absoluta”.
En el momento deseado: la muerte entre Nietzsche y Blanchot
Authors: Billi Noelia
Published: December 2017

Este artículo tiene por objeto destacar la relevancia de una noción de “muerte impersonal” en el horizonte de una indagación no antropocentrada de lo biopolítico. En tanto no se rige por la teleología del principio antrópico, la filosofía contemporánea considera lo impersonal como una resistencia al biopoder, aunque suele concentrarse en los avatares del concepto de Vida. Aquí, avanzamos en el examen de los rasgos de la muerte impersonal en dos pensadores cuyas obras resultan fundamentales para estas líneas de trabajo contemporáneas. En Nietzsche, analizamos la cuestión de la “muerte libre” y la imagen de la ceniza, dando cuenta de las posibilidades que allí se vislumbran para una reivindicación de lo impersonal. Luego, subrayamos sus semejanzas y derivaciones en los conceptos blanchotianos de “momento deseado” y “tiempo muerto”.
La respuesta merleaupontyana a la “inducción pesimista” como posible complemento de su polémica contra el escepticismo
Authors: Cormick Claudio Javier
Published: December 2017

Intentaremos completar el análisis de la relación entre Merleau-Ponty y distintas posiciones escépticas -típicamente restringido a textos más “canónicos”- a partir de su conferencia sobre Le primat de la perception. El fenomenólogo argumenta allí contra la “inducción pesimista” según la cual podemos, a la luz de la refutación de las hipótesis científicas pasadas, prever que las actuales son también falsas: invirtiendo la conclusión de esta inducción, afirma que las transformaciones de nuestro conocimiento son un proceso autocorrectivo, tal que ninguna hipótesis es abandonada sino en la medida en que otra aparece como mejor. Esto nos hará problematizar la noción de refutación científica en Merleau-Ponty, quien ofrece como modelo del progreso epistémico la mutua sustitución (“espontánea”) de creencias perceptivas, que no involucra la consideración consciente de criterios racionales. Según señalaremos, este punto de partida no puede extrapolarse al caso de hipótesis sopesadas según sus respectivas virtudes.
La narrativa reflexiva como forma de evaluación programática (Reflective Narratives as a Type of Program Evaluation)
Authors: Martínez-Arbelaiz Asunción
Published: December 2017

Mostrar la eficacia de un programa de enseñanza de lenguas ante las partes interesadas y a la vez señalar áreas o aspectos por mejorar son los objetivos de la evaluación de programas. En este artículo se describe el proceso de evaluación de tres programas de español como segunda lengua en situación de inmersión, en el que se difuminan los límites entre el aprendizaje dentro y fuera del aula. La investigación narrativa se presenta como opción metodológica que permite comprender la experiencia de los participantes, de forma completa y matizada. Abstract To show the efficiency of a given language program to interested stakeholders and to point to areas or aspects that require improvement are the two main objectives of any program evaluation. In this article, we describe the evaluation process of three Spanish as a second language programs in a study abroad context, where boundaries between learning inside and outside the classroom necessarily blur. Narrative inquiry is our methodological option because it allows us to understand the students experience in a holistic and nuanced manner.
Pediatric Patient-Centered Transitions From Hospital to Home: Improving the Discharge Medication Process
Authors: Mallory Leah A. , Diminick Noah P. , Bourque Jonathan P. , Bryden Meredith R. , Miller Jessica L. , Nystrom Nancy M. , Lord Melanie R. , McElwain Lorraine L.
Published: December 2017

OBJECTIVES:

Medications prescribed at hospital discharge can lead to patient harm if there are access barriers or misunderstanding of instructions. Filling prescriptions before discharge can decrease these risks. We aimed to increase the percentage of patients leaving the hospital with new discharge medications in hand to 70% by 18 months.

METHODS:

We used sequential plan-do-study-act cycles from January 2015 to September 2016. We used statistical process control charts to track process measures, new medications filled before discharge, and rates of bedside delivery with pharmacist teaching to the inpatient pediatric unit. Outcome measures included national patient survey data, collected and displayed quarterly, as well as caregiver understanding, comparing inaccuracy of medication teach-back with and without medications in hand before discharge.

RESULTS:

Rates of patients leaving the hospital with medications in hand increased from a baseline of 2% to 85% over the study period. Bedside delivery reached 71%. Inaccuracy of caregiver report during a postdischarge phone call decreased from 3.3% to 0.7% (P < .05) when medications were in hand before discharge. Patient satisfaction with education of new medication side effects increased from 50% to 88%.

CONCLUSIONS:

By using an engaged interprofessional team, we optimized use of our on-site outpatient pharmacy and increased the percentage of pediatric patients leaving the hospital with new discharge medications in hand to >80%. This, accompanied by increased rates of bedside medication delivery and pharmacist teaching, was associated with improvements in caregiver discharge-medication related experience and understanding.
Identification of resilience factors, variables and indicators for sustainable management of urban drainage systems
Authors: Blanco-Londoño Sergio Andrés , Torres-Lozada Patricia , Galvis-Castaño Alberto
Published: December 2017

La gestión del agua en general y de los sistemas de drenaje urbano (SDU) en particular, debe ser concebida no solo para asegurar la prestación de un servicio público, sino también para garantizar su sostenibilidad y resiliencia. En el presente artículo se presenta un análisis y reflexión que permitió identificar los factores, variables e indicadores de resiliencia para la gestión sostenible de SDU, usando herramientas de gestión de información de temas científicos. Como resultado de este análisis, se identificaron cuatro factores de resiliencia de recursos hídricos: i. Flexibilidad; ii. Recursividad; iii. Redundancia; y iv. Robustez y seis variables de resiliencia de SDU: i. Capacidad de recuperación; ii. Capacidad de respuesta; iii. Amplitud; iv. Capacidad de absorción; v. Capacidad de resistencia; y vi. Curva de respuesta. Para cuantificar estas variables, se proponen sus correspondientes indicadores. Los elementos identificados contribuyen al desarrollo de modelos integrales de evaluación de la resiliencia en SDU.
Mejoramiento de la adherencia en recubrimientos de Hidroxiapatita elaborados mediante proyección térmica oxiacetilénica, a partir de resultados de simulación numérica
Authors: Copete Hamilton , Vargas Galvis Fabio , López Gómez Esperanza , Gómez Pérez Jhonatan , Ríos Meneses Tatiana
Published: December 2017

Los resultados de la simulación numérica realizada con el software Jets et Poudres fueron utilizados para depositar recubrimientos de hidroxiapatita mediante proyección térmica oxiacetilénica, con el fin de aumentar su cohesión y adhesión sobre sustratos de Ti6Al4V. Se determinó el efecto de una llama neutra, una oxidante y una súper-oxidante, así como de la distancia de proyección (7, 9,5 y 12 cm) entre el sustrato y la antorcha, sobre el número adimensional de K-Sommerfeld (K). Dicho número adimensional es influenciado por la distancia de proyección y no por las llamas evaluadas. Para recubrimientos fabricados a una distancia de 12 cm el número de Sommerfeld varía entre 34 y 37, lo que les confiere una estructura más homogénea que la de aquellos depositados a 7 y 9,5 cm en los que existe un alto contenido de partículas parcialmente fundidas (K=0), o con salpicaduras (K>75), que reducen la adhesión de los recubrimientos.
Detección cooperativa de usuarios primarios en entornos multibanda basado en muestreo sub-Nyquist uniforme en el dominio disperso
Authors: Astaiza Hoyos Evelio , Bermúdez-Orozco Héctor Fabio , Campo-Muñoz Wilmar Yesid
Published: December 2017

En este artículo se propone un nuevo algoritmo cooperativo de detección de usuarios primarios (PU) en entornos multibanda (Sensado de Espectro de Banda Ancha - WBSS) basado en muestreo Sub-Nyquist y compleción de matrices. Así mismo se propone una matriz de muestreo uniforme para la señal multibanda en el dominio disperso. Abordando de esta forma, el problema del gran número de muestras a procesar cuando se realiza el muestreo de señales multibanda a tasa iguales o superiores a la tasa de Nyquist, buscando mejorar el desempeño del sensado de espectro de banda ancha en términos de la probabilidad de detección. Los resultados de simulación permiten evidenciar que el algoritmo propuesto mejora el desempeño del sensado en función de la probabilidad de detección y de las características operacionales del receptor con respecto a otros algoritmos de sensado de espectro de banda ancha cooperativo basados en muestreo Sub-Nyquist.
Rotura de la presa de Vega de Tera, simulación hidráulica de la propagación de la avenida (Zamora, España)
Authors: Prieto Calderón Jose Luis , Marínez-Alegría López Roberto , Taboa Castro Javier , Montequi Martín Isabel , Sanz Lobón Germán
Published: December 2017

La rotura de la presa de Vega de Tera en 1959 supuso un hito en la ingeniería y en la percepción del riesgo de las presas a nivel nacional. Los estudios y modelos retrospectivos de la rotura son herramientas que permite mejorar la planificación territorial y la evaluación de los riesgos de este tipo de infraestructuras. El objetivo de este trabajo es reconstruir la rotura de la presa y simular la avenida generada. Para ello se ha reproducido el hidrograma, estimado el caudal punta y se ha construido un modelo hidráulico en HEC-RAS. El modelo permite afirmar que se trató de una rotura prácticamente instantánea (26 min), con un caudal punta de 13000 m3/s (velocidad y calado máximos de 30 m/s, y de 24 m). Finalmente todos los resultados hidráulicos corroboran la gran destrucción generada y el escenario catastrófico observado en las imágenes históricas.
Desarrollo de la industria de aleaciones de magnesio en Colombia - Una oportunidad
Authors: Berrio-Betancur Luisa Fernanda , Echeverry-Rendón Mónica , Correa-Bedoya Esteban , Zuleta-Gil Alejandro Alberto , Robledo-Restrepo Sara María , Castaño-Gonzalez Juan Guillermo , Echeverría-Echeverría Félix
Published: December 2017

Dentro de los materiales que más avance han tenido en las últimas décadas, se encuentran el magnesio y sus aleaciones, cuyo volumen de producción mundial se ha incrementado notoriamente en los últimos años. El creciente interés en el magnesio se debe tanto a sus propiedades físicas y mecánicas como a la búsqueda de alternativas de materiales menos contaminantes. Con el objeto de proporcionar una visión general de las posibilidades que el uso de este material tiene en la industria nacional, en este trabajo se da una mirada a los aspectos básicos del material y de los procesos de obtención del mismo, así como a sus aplicaciones más promisorias y con potencial de ser desarrolladas en Colombia. Para finalizar, los autores discuten sus investigaciones y resultados acerca de este material, buscando su aprovechamiento como insumo para la implementación de procesos y productos a nivel comercial.
Experiencia y cuerpo animado en el espectro autista. Evaluando los alcances y límites del DSM-5
Authors: Villamil Lozano Andrés Felipe
Published: December 2017

Se aborda de forma crítica la exposición del desorden del espectro autista llevada a cabo en la quinta y última edición del Diagnostic and Statistical Manual of Mental Disorders (DSM-5), herramienta principal de muchos psiquiatras para comprender y diagnosticar cualquier psicopatología. Con este abordaje se busca evidenciar cómo, en el DSM-5 –al igual que en la interpretación inaugurada por Baron-Cohen, Leslie y Frith–, se deja de lado la experiencia y el cuerpo animado del paciente, por lo que es aconsejable un nuevo acercamiento a dicho desorden que tenga fundamentos fenomenológicos. Finalmente, se presenta el bosquejo de una fenomenología del desorden del espectro autista que reconoce la primacía del cuerpo animado en la experiencia del mundo, de sí mismo y de los otros.
Explaining Irrational Actions
Authors: Summers Jesse S.
Published: December 2017

We sometimes want to understand irrational action, or actions a person under­takes given that their acting that way conflicts with their beliefs, their (other) desires, or their (other) goals. What is puzzling about all explanations of such irrational ac­tions is this: if we explain the action by offering the agent’s reasons for the action, the action no longer seems irrational, but only (at most) a bad decision. If we explain the action mechanistically, without offering the agent’s reasons for it, then the ex­planation fails to explain the behavior as an action at all. I focus on cases that result from compulsion or irresistible desire, especially addiction, and show that this problem of explaining irrational actions may be insurmountable because, given the constraints on action explanations, we cannot explain irrational actions both as irrational and as actions.
Peter Zachar. A Metaphysics of Psychopathology. Cambridge, MA: MIT Press, 2014. 274 pp.
Authors: Rojas Velásquez Diana Marcela
Published: December 2017

Peter Zachar. A Metaphysics of Psychopathology. Cambridge, MA: MIT. Press, 2014. 274 pp.
¿Cómo entender los fenómenos de pasividad? Una revisión crítica de la hipótesis de Frith
Authors: Sánchez Camilo
Published: December 2017

Desde 1980, C. D. Frith ha venido investigando sobre la esquizofrenia, explicando síntomas centrales como las alucinaciones, con miras a aclarar cuál es el déficit de base y originario de este trastorno mental. A lo largo de estos años, Frith ha propuesto su hipótesis centrada en el concepto de consciencia, y ha venido elaborándola como parte del desarrollo científico contemporáneo: parte de la aplicación de modelos neurocognitivos de control motor, según los cuales el déficit se atribuye al concepto de copia eferente y su función, luego la actualiza y complementa con evidencia de imagen cerebral de la atenuación de la actividad cortical parietal, como efecto derivado de la copia eferente; por último, adiciona el concepto de sentido de agencia, y el componente de cognición social, intentando integrar la experiencia del paciente y la relevancia del ámbito inter-subjetivo a su propuesta, ambos aspectos recientemente populares.
Proving IT Works
Authors: Burston Jack
Published: December 2017

This paper deals with the assessment of the effects of instructional technology (IT) on the foreign language curriculum. It is intended to serve two purposes. First, it offers a general background to the evaluation of IT, which is essential knowledge for anyone involved in the integration of IT into their courses. Second, it seeks to provide a clearer understanding of the evaluation parameters that need to be taken into consideration when establishing the infrastructure for the on-going assessment of IT. While giving due consideration to evaluating the effectiveness of CALL on learning outcomes, it is proposed that we need to take a broader view of the assessment of IT, one which goes beyond its defensive justification and promotion. In particular, it is argued that we need to move away from a technocentric assessment of IT to one which focuses on how IT contributes to realizing our pedagogical goals and objectives.
Flaming in CMC
Authors: Ittzes Abrams Zsuzsanna
Published: December 2017

Research on the use of computer-mediated communication (CMC) without exception supports its cognitive and affective benefits for foreign language (L2) learning (Beauvois, 1995, 1997; Blake 2000; Swaffar, 1998). Studies both in L1 and L2 contexts especially draw attention to its ability to promote more democratic discourse patterns than face-to-face classroom interaction (Batson, 1993; Chun, 1994; Kern, 1995). Sproull and Kiesler (1991) claim that people feel more at liberty expressing themselves without fear of social approbation because the typical social norms of face-to-face interactions do not apply to this communicative environment. However, while CMC's liberating effects have been mostly welcome, a less desirable one has also emerged: flaming. While flaming, which refers to aggressive interpersonal behavior and rude language (Miller, 1993), has been addressed in L1 academic and nonacademic contexts, it has not yet been a focus of discussion in L2 circles. The present article, based on a descriptive study with 75 intermediate learners of college German participating in two sessions of synchronous CMC during the course of a semester, investigates students' flaming behavior, and shows that not only is flaming a very infrequent occurrence, it can even be harnessed for the development of authentic communicative and interactive competence.
Customer Liquidity Provision: Implications for Corporate Bond Transaction Costs
Authors: Choi Jaewon , Huh Yesol
Published: December 2017

The convention in calculating trading costs in corporate bond markets is to assume that dealers provide liquidity to non-dealers (customers) and calculate average bid-ask spreads that customers pay dealers. We show that customers often provide liquidity in corporate bond markets, and thus, average bid-ask spreads underestimate trading costs that customers demanding liquidity pay. Compared with periods before the 2008 financial crisis, substantial amounts of liquidity provision have moved from the dealer sector to the non-dealer sector, consistent with decreased dealer risk capacity. Among trades where customers are demanding liquidity, we find that these trades pay 35 to 50 percent higher spreads than before the crisis. Our results indicate that liquidity decreased in corporate bond markets and can help explain why despite the decrease in dealers' risk capacity, average bid-ask spread estimates remain low.
Alternative wall-to-slab connection systems in reinforced concrete structures
Authors: Gerber J , van Zijl G
Published: December 2017

In many reinforced concrete structures the walls precede the construction of the connecting floors. A system is, therefore, required to connect the floors to the already cast walls. There are many different floor-to-wall connection systems available in South Africa, but their behaviour and capacity are not always fully understood, especially when the moment capacity of the joint is to be utilised. This study focuses on four systems: continuous starter-bars, pre-bent site-installed starter-bars, pre-assembled starter-bars and cast-in anchors with mechanical couplers. The design procedure for the continuous starter-bar system is well understood and documented in design codes, but not enough information is available on the design procedure for the other systems. Certain practical aspects of the installation process are also not fully understood. Cold-bending and straightening of the starter-bars are inevitable in both bend-out systems. Previous research shows that this cold-working of the reinforcement can reduce the yield stress and E-modulus of the steel. In order to investigate these findings, a series of tensile tests are conducted. The results indicate that a significant reduction can be expected in both the yield stress and modulus of elasticity of the steel. Low-cycle fatigue tests further suggest that cold-bent steel also has a reduced ductility. The tensile tests are followed by the construction and testing of the systems in full-scale wall-to-slab connections. The effect of the cold-bending on the starter-bars is clearly visible, as both the responses of the bend-out systems are less satisfying than the results from the continuous starter-bar system. The experimental phase is followed by numerical analysis of the connection systems. The finite element analyses show that the structural performance is significantly more sensitive to a reduction in the yield stress of the starter-bars, than to the use of a lower concrete grade. It is concluded that all the alternative connection systems can be implemented successfully in a moment-fixed wall-to-slab connection, but that the site-installed bend-out system is the preferred method. However, in order to ensure that the system performs on the same level as conventional systems, it is recommended that the design should be conducted with a set of modified steel properties to allow for the negative effect of the cold-working on the starter-bars.
MacArthur study of successful aging: on the way to a new gerontology (abstract review of the book Rowe J.W., Kahn R.L. «Successful Aging»)
Authors: Shapovalenko I.V.
Published: December 2017

In the Russian scientific literature, there are practically no detailed publications of the materials of the MacArthur study of aging, the results of which became the basis for the development of a new direction in gerontology – «successful», «prosperous» aging. The concept of «successful aging» is based on empirical data in the works of D.V. Rowe, R.L. Kahn. This article describes the organization of the MacArthur study of aging and the methods used; the logic of substantiation of the category «successful aging» is given; the contribution of the individual and society to the task of successful aging is shown.
Existential problems of identity in contemporary foreign gerontopsychology: results of the analysis of studies over the past five years
Authors: Senkevich L.V. , Shagidaeva A.B.
Published: December 2017

The article presents the results of a theoretical analysis of contemporary foreign concepts about the existential problems of the personality of the elderly and senile ages. Taking into account the results of theoretical analysis, the article reveals the modern psychological theories and concepts of solving current existential problems by the aging persons, such as: the search for the meaning of their existence and the existence of mankind as a whole, the problem of freedom and responsibility for one's own life, an attitude towards death as an existential fact, experience of existential isolation.
Socio-psychological adaptation in later age and conditions of successful aging
Authors: Dvoryanchikov N.V. , Sokolinskaya E.V.
Published: December 2017

The article deals with the aspects of social and psychological adaptation in elderly and senile age and analyses the conditions for successful aging. The authors assume that people in elderly age have significant individual characteristics and, as a consequence, research results are often contradictory. It is shown that the socio-psychological adaptation in elderly patients is determined by individual psychological qualities, by specificity of their identity, by strategies of their adaptation to old age. This may be the strategy of the "closed loop" type, that is maintenance of self as an individual, or an alternative strategy, maintaining self as a personality. It was noted that adaptation to old age was flying differently in women and men, which may be due to gender differences in lifestyle, the strongest identification of some men with occupational roles, and of women with homework and family obligations. It is shown that successful aging contributes to the formation of androgynous type of gender identity, which provides flexibility in respond to different situations.
El derecho a la participación de las víctimas del conflicto armado desde el contexto de la Mesa Municipal de Santiago de Cali en el marco de la Ley 1448 de 2011
Authors: Cerón Arboleda Paula Andrea
Published: December 2017

This article analyzes the participation of the victims of the armed conflict as a transversal component in the public policy of victims set forth in Law 1448 of 2011, focusing its analysis on the participation space institutionally established by Resolution 388 of 2013, Protocol of Participation; This space was called Participation Tables. For this analysis, victims from the years 2013 to 2014 were chosen as the case  study. The main findings of the research were collected using participant observation and semi-structured surveys as tools, both for leaders of victim organizations and for public officials of different state entities guarantors of the correct materialization of this space. Among the findings, there was little impact of the Participation Table in the construction of municipal public policies and in their follow-up, due to factors such as ignorance of the norm, poor attendance at meetings, friction between the  same members of the table, distrust towards the governmental entities, among other aspects that will be evidenced throughout the present article.
La posibilidad conceptual y el argumento histórico en torno al estudio del precedente
Authors: Gómora Juárez Sandra
Published: December 2017

This article raises the possibility of studying the concept of precedent from a general perspective, which is viable from the analytical philosophy of law, but focuses on how this company also supports historical arguments. The thesis maintains that – regardless of the particular characteristics that any particular legal system possesses or of the cultural family to which it belongs– it is possible to identify certain necessary properties that are constant in the concept of precedent where it is presented, trying to make evident such properties. The analysis suggests that we may have built theories, evaluations, critiques and proposals around the precedent based on one of the many local notions we have about him, while his concept remains obscure. This affirmation demonstrates two needs: first, that we need to clarify the concept of the precedent, understand its meaning in order to be able to evaluate, criticize or adequately propose anything around this institution. Second, in order to elucidate the concept of the precedent, we need to eliminate the barriers and limitations thathave usually been imposed on studies on this subject and to open the way in other directions by attempting a type of research that allows us to analyze it from a general point of view.
La desviación del poder como límite a la discrecionalidad en la declaración de insubsistencia de funcionarios de libre nombramiento y remoción
Authors: Ordóñez Bastidas William Andrés
Published: December 2017

Despite the confidence required by the free appointment and removal position, the discretion in the administrative acts that declare the non-subsistence does not imply absolute powers, but rather submits the administration to the service improvement, to the common interest, to the legal requirements of the registration in the curriculum vitae, to the jurisprudential parameters of registration of reasons and to the respect for the fundamental rights of the public servant. Methodologically, the elements that prove the deviation of power before an arbitrariness in the non-subsistence of this type of jobs, its main means of proof and justification of the repetition action will be explained.
La influencia de la jurisprudencia de la Corte Constitucional en el proceso legislativo en Colombia
Authors: Celemín Caicedo Yenny Andrea
Published: December 2017

In Colombia, the substantive contents of statutes have started to feed on interpretations, recommendations and commandments given by the Constitutional Court in its decisions. However, this statement cannot be extended to procedural requirements in such a clear way. The purpose of this essay is to determine some precedents about the legislative process, and to begin a reflection about the reasons why the Colombian Constitutional Court’s rules have not been able to fully impact the procedural activity of the Colombian legislator, yet.
Trajetória, projetos e expectativas de sucesso na carreira: estudo com universitários concluintes que não pretendem atuar na área de formação
Authors: Freitas Olivia Araújo de , Oliveira Marina Cardoso de
Published: December 2017

Um conjunto de sentimentos e expectativas permeiam as vivências acadêmicas e, ao final da graduação, espera-se que os concluintes consigam atuar na sua área de formação. Contudo, tem-se observado que uma parcela dos universitários não manifesta esta intenção. Cientes desta realidade e buscando explorar o tema, esta pesquisa buscou descrever a trajetória, os projetos de carreira e as expectativas de sucesso de concluintes do ensino superior que autodeclaram não pretender atuar na área de formação. Para a construção do corpus da pesquisa foi conduzido um grupo focal com a participação de quatro universitários concluintes, de diferentes cursos, de ambos os sexos que declararam não querer atuar na área de formação depois da graduação.  O corpus foi analisado com base na análise do discurso com foco na identificação de repertórios interpretativos. As análises permitiram identificar similaridades nas trajetórias dos participantes, que estiveram marcadas pelas dificuldades na tomada de decisão desde a escolha inicial do curso superior até o momento presente da transição universidade-trabalho. Quanto aos projetos, os participantes, apesar de não pretenderem atuar na área, ainda não tem clareza do que irão fazer após a graduação. Por sua vez, tais características demarcaram as expectativas de sucesso na carreira que enfatizaram tanto aspectos objetivos quanto subjetivos, dando ênfase ao retorno financeiro e a satisfação pessoal. Os resultados sugerem a importância dos serviços de orientação profissional e de carreira como práticas que colaboram tanto nos processos da escolha profissional quanto no auxílio para o planejamento de carreira e inserção no mercado de trabalho.
Tamanho de amostra para estimação da média de caracteres de milheto em épocas de avaliação
Authors: KLEINPAUL JÉSSICA ANDIARA , CARGNELUTTI FILHO ALBERTO , ALVES BRUNA MENDONÇA , BURIN CLÁUDIA , NEU ISMAEL MARIO MARCIO , SILVEIRA DANIELA LIXINSKI , SIMÕES FERNANDA MARTINS
Published: December 2017

Os objetivos deste trabalho foram determinar o tamanho de amostra para estimação da média de caracteres de milheto (Pennisetum glaucum), para distintos níveis de precisão e verificar a variabilidade do tamanho de amostra entre épocas de avaliação. Foi conduzido um ensaio de uniformidade com milheto, no ano agrícola 2012/2013. Foram selecionadas e marcadas, aleatoriamente, 360 plantas. Aos 26, 33, 40 e 48 dias após a semeadura foram mensurados os caracteres altura de planta, diâmetro do colmo, número de afilhos,nós por colmo e nós por afilho. Aos 48 dias após a semeadura foram pesadas a massa verde de parte aérea e a massa seca de parte aérea. Para cada caractere, foram calculadas as medidas de tendência central e de variabilidade. Foi determinado o tamanho de amostra por reamostragem, com reposição de 10000 reamostras, para as amplitudes do intervalo de confiança de 95% iguais a 15%, 16%, ..., 30% da estimativa da média. Maiores tamanhos de amostra são necessários no início do ciclo da cultura, reduzindo-se com o passar do ciclo. Para estimação da média de caracteres de milheto, com amplitude do intervalo de confiança de 95% de até 30% da estimativa da média, são necessárias 193 plantas.
EFEITO DIRETO E INDIRETO DO MILHO BT E CONVENCIONAL SOBRE O PREDADOR Podisus nigrispinus
Authors: SANTANA ALEXA GABRIELA , ÁVILLA CRÉBIO JOSÉ , OLIVEIRA HARLEY NONATO DE , SOUZA EUNICE CLÁUDIA SCHLICK
Published: December 2017

Objetivou-se avaliar o efeito direto e indireto de plantas de milho Bt e convencional sobre o desenvolvimento e a reprodução do predador Podisus nigrispinus (Dallas, 1851) (Hemiptera: Pentatomidae). Os experimentos foram conduzidos, na Embrapa Agropecuária Oeste em Dourados/MS. Para avaliar o efeito direto, o predador P. nigrispinus foi colocado em contato direto com as plantas de milho Bt e não Bt e alimentado com pupas de Tenebrio molitor (L.). Para avaliar o efeito indireto, lagartas de Spodoptera frugiperda (Smith) foram colocadas para se alimentarem previamente em plantas de milho Bt e não Bt e depois oferecidas ao predador. Avaliando-se: duração e viabilidade dos períodos ninfais, períodos de pré-oviposição, de oviposição, fecundidade e longevidade de adultos (fêmeas e machos). As plantas de milho Bt, quando em contato direto com P. nigrispinus, não influenciaram nenhum parâmetro biológico deste predador, em comparação ao milho convencional. Todavia, foi constatado uma menor duração para o segundo instar ninfal de P. nigrispinus, quando este predador foi criado em lagartas de S. frugiperda que haviam sido alimentado previamente em plantas de milho Bt, quando comparado ao milho convencional. De maneira geral, não foram verificadas influências das plantas de milho Bt sobre o predador.
Los orígenes de la concesión de obras públicas en el derecho español: el principio del concesionario interpuesto en la legislación ferroviaria del siglo XIX
Authors: Gosálbez-Pequeño Humberto
Published: December 2017

En España, el Estado liberal del siglo xix impone el principio del concesionario interpuesto en la construcción y la explotación de las líneas del ferrocarril.La legislación administrativa prefiere la ejecución de obras mediante concesión administrativa, admitiendo excepcionalmente la ejecución directa por la Administración pública. El presente trabajo de investigación pretende determinar la influencia del ferrocarril en la institución de la concesión administrativa, a través de un examen de los sistemas de construcción y explotación de los ferrocarriles decimonónicos españoles
El establecimiento y la modificación de tributos como eventos susceptibles de alterar el equilibrio económico del contrato estatal
Authors: Rusinque Felipe
Published: December 2017

La jurisprudencia del Consejo de Estado ha admitido, en abstracto, que la creación de un tributo o su modificación durante la ejecución de un contrato estatal son eventos capaces de alterar la ecuación financiera de este. Aquella Corporación ha entendido que el restablecimiento del equilibrio económico quebrado por la imposición o reforma de gravámenes fiscales puede fundarse en la teoría del hecho del príncipe o en la teoría de la imprevisión. Con todo, a pesar de dicho reconocimiento, cuando se analizan las circunstancias propias de cada caso en concreto difícilmente se están cumpliendo los requisitos necesarios para restituir el balance de la ecuación financiera.