bluuebunny/crossref_metadata_2025 huggingface dataset:
A Survey of Solving Approaches for Multiple Objective Flexible Job Shop Scheduling Problems
Authors: Genova Krasimira , Kirilov Leoneed , Guliashki Vassil
Published: July 2015

Many real life scheduling problems can be formulated as Flexible Job Shop Scheduling Problems (FJSSPs) which simultaneously optimize several conflicting criteria. A typical feature of such problems is their high computational complexity. The purpose of this paper is to provide a review of the techniques, developed to solve multiple objective FJSSPs during the last decade. These techniques could be classified into two groups: approaches with application of mathematical models and heuristic approaches. Usually hybrid metaheuristic algorithms are proposed for large dimensional real life problems and they outlay the tendency for the future developments of efficient solution approaches for multiple objective FJSSPs.
TCMVS: A Novel Trajectory Clustering Technique Based on Multi-View Similarity
Authors: Velpula Vijaya Bhaskar , Prasad Mhm Krishna
Published: July 2015

The analysis of moving entities “trajectories” is an important task in different application domains, since it enables the analyst to design, evaluate and optimize navigation spaces. Trajectory clustering is aimed at identifying the objects moving in similar paths and it helps the analysis and obtaining of efficient patterns. Since clustering depends mainly on similarity, the computing similarity between trajectories is an equally important task. For defining the similarity between two trajectories, one needs to consider both the movement and the speed (i.e., the location and time) of the objects, along with the semantic features that may vary. Traditional similarity measures are based on a single viewpoint that cannot explore novel possibilities. Hence, this paper proposes a novel approach, i.e., multi viewpoint similarity measure for clustering trajectories and presents “Trajectory Clustering Based on Multi View Similarity” technique for clustering. The authors have demonstrated the efficiency of the proposed technique by developing Java based tool, called TCMVS and have experimented on real datasets.
A Controller Combining Positive Velocity Feedback with Negative Angle Feedback for a Two-Wheeled Robot
Authors: Hu Lingyan , Ieee Henry Leung , Xu Shaoping , Zhang Hua
Published: July 2015

The two-wheeled robot is a nonlinear system of multi-variables, higherorder and strong coupling. This paper presented a PID Controller with Double Loops (PCDL) to control the tilt angle and velocity of a two-wheeled robot. The angle controller is the regular negative feedback, while the velocity control is the positive feedback. The Double Loops work cooperatively to endow the system with strong anti-interference ability. The stability of the whole system is analyzed and the criterion of the system stability is developed. The simulation and experiments showed that the two-wheeled robot can self-balance and move at an expected velocity and the system has strong anti-interference ability.
Clean Utilization of CuCl Residue by Microwave Roasting under Oxygen-Enriched Condition
Authors: Zhanyong Guo , Ting Lei , Wei Li , Shaohua Ju , Jinhui Peng
Published: July 2015

The clean utilization of the CuCl residue containing chloride produced from zinc hydrometallurgy residue is very important for the recycle of valuable metals. A new method of microwave roasting under oxygen enriched condition was put forward to strengthen the process of dechlorination. It was demonstrated that the dechlorination rate of CuCl residue by microwave roasting was higher than that of conventional roasting by tubular resistance furnace under the same conditions (temperature, holding time and atmosphere). After roasting at a temperature of 450°C for 120 min under an oxygen flow rate of 150 mL/min in microwave field, the dechlorination rate of CuCl residue was as high as 97%, increasing 17% compared to that of conventional roasting using tubular resistance furnace. The characterizations of phase variation of CuCl residue in microwave field by means of X-ray diffraction (XRD), scanning electron microscopy-energy dispersive spectrometer (SEM-EDS) and Raman spectroscopy indicated that the process of dechlorination by microwave roasting under the oxygen enriched condition was much more efficient than conventional roasting.
Synthesis and Characterization of Nanosized Manganese Oxyhydroxide Compounds by Sonochemical Method
Authors: Salavati-Niasari Masoud , Esmaeili-Zare Mahdiyeh , Gholami-Daghian Mina , Bagheri Samira
Published: July 2015

Manganese oxyhydroxide (MnOOH) nanoparticles were synthesized by the reaction of [Mn(Hsal)2] complex and NaOH in the presence of ultrasound irradiation. In this study, the effect of different reaction parameters such as type of solvent, sonication time and type of surfactant on the morphology and the particle size of product were studied. The as-synthesized nanoparticles, with an average size of 10–15 nm, were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectra (FT-IR) and energy dispersive spectrometry (EDS). To the best of author’s knowledge, it is the first time that [Mn(Hsal)2] complex is used as manganese source for the synthesis of MnOOH nanoparticles.
Research on the Microstructure and Mechanical Property of Ti-7Cu Alloy after Semi-Solid Forging
Authors: Chen Yongnan , Huo Yazhou , Zhao Yongqing , Sun Zhiping , Bai Fan
Published: July 2015

The present work is focused on the development of microstructure of Ti-7Cu alloy as a function of forging temperature and forging ratio in semi-solid state and the influence of resulting microstructure on the mechanical properties. The experimental results showed that the dynamic recrystallization occurred during semi-solid forging and the grain refinement was attained which is considered to be favorable for improving the semi-solid formability. The grain size increased with forging temperature and decreased with forging ratio. Forging temperature has a significant effect on the precipitation behavior in grain boundary regions during the semi-solid processing. More acicular-Ti2Cu tended to precipitate in grain boundary regions with higher forging temperature and finally formed precipitates zones adjacent to grain boundaries after forged at 1,100°C. High ultimate tensile strengths and low elongation have been achieved after semi-solid forging. The strength and hardness decreased with increase of forging temperature, while the ductility increased with increase of forging ratio. The relative contributions of tensile properties were attributed to the varieties of grain size and the distribution of Ti2Cu precipitates obtained by semi-solid forging.
Synthesis and Characterization of BiFeO3 Ceramic by Simple and Novel Methods
Authors: Amiri Omid , Reza Mozdianfar Mohammad , Vahid Mahmoud , Salavati-Niasari Masoud , Gholamrezaei Sousan
Published: July 2015

BiFeO3 nanopowders with new morphology have been synthesized by different methods. X-ray diffraction analysis, scanning electron microscopy, Fourier transform infrared and vibrating sample magnetometer were carried out at room temperature to study the structural and magnetic properties of as-synthesized products. VSM was utilized to measure the size-dependent magnetic behaviors of the as-prepared nanoparticles. Results show that the method has strong effect on the purity of the products. BFO synthesized by third method was pure. Crystallite size has a great effect on the magnetic properties. According to these results the nanoparticle diameter is smaller than the critical single-domain diameter, avoiding the configuration of magnetic domain walls decreases the magnetization. Even though the diameter of particle becomes even smaller, the thermal stability of the magnetization orientation decreases.
On the number of object markers in Bantu languages
Authors: Marlo Michael R.
Published: July 2015

This paper describes the morphosyntactic diversity among Bantu languages in the number of pre-stem and post-stem object markers (OMs) that are allowed and discusses the factors responsible for this diversity. The number of OMs is sometimes highly restricted and sometimes seemingly unrestricted. Some languages have only pre-stem marking of objects; some have only post-stem marking; and some have both pre-stem and post-stem marking. Person-number, animacy, and locative noun classes are the basis for a number of morphosyntactic asymmetries in individual systems in whether objects are marked before or after the stem, though other factors such as grammatical relations are also involved. A handful of types of OMs, including locatives and the 1sg and reflexive markers, commonly allow languages to circumvent restrictions on object marking, allowing one more OM than usual. The number of OMs is also restricted by certain syntactic configurations such as passivization. A number of other issues that are important general considerations in the syntax of Bantu languages are shown to have at most a secondary role in determining the number of OMs that are allowed.
Non-Tuareg Berber and the genesis of nomadic Northern Songhay
Authors: Souag Lameen
Published: July 2015

With massive borrowing resulting in systematic suppletion, the nomadic Northern Songhay languages, Tadaksahak and Tagdal, are some of the most striking products of intense language contact in Africa. While the importance of Berber in their formation is obvious, published comparisons have focused almost exclusively on Tuareg, the currently dominant Berber language of the region. This paper, however, demonstrates that Tuareg-Songhay contact alone cannot adequately account for their emergence. Tadaksahak at least seems to have as its substrate not Tuareg, but rather a Western Berber language closely related to Tetserrét, a small minority language of Niger; such a language also played a role in the development of Tagdal. Western Berber influence, however, is not reconstructible at the proto-Northern-Songhay level, despite being attested in most Northern Songhay languages individually. A closer look at the Western Berber stratum in Tadaksahak indicates that language shift there was accompanied by broader cultural changes, including a shift away from the regional norm of cross-cousin marriage towards the North African preference for patrilineal parallel cousin marriage. These linguistic and cultural changes may have been part of an effort to assert an identity as specialists in Islamic learning, following regional political shifts around the sixteenth century.
Fallibilism and Ontology in Tuukka Kaidesoja’s Critical Realist Social Ontology
Authors: Little Daniel
Published: July 2015

This article addresses Tuukka Kaidesoja’s critique of the philosophical presuppositions of Roy Bhaskar’s theories of critical realism. The article supports Kaidesoja’s naturalistic approach to the philosophy of the social sciences, including the field of social ontology. The article discusses the specific topics of fallibilism, emergence, and causal powers. I conclude that Kaidesoja’s book is a valuable contribution to current debates over critical realism.
Précis of Naturalizing Critical Realist Social Ontology
Authors: Kaidesoja Tuukka
Published: July 2015

This paper introduces and contextualizes my book Naturalizing Critical Realist Social Ontology (London: Routledge, 2013).
Compact dual-band FTIR spectrometer for atmosphere monitoring
Authors: Wawrzyniuk L. , Jóźwicki R. , Szymański G. , Rataj M. , Błęcka M. , Cichocki A. , Pietrzak R.
Published: July 2015

Novel FTIR spectrometer for the monitoring of atmosphere is presented. Its design stands out by a compact form allowing the measures in two IR spectral bands 3-5 and 8-12 μm simultaneously. The spectrometer is composed of two Michelson interferometers with the joint sliding mirror. The paper contains the detailed description of the optics and electronics units, preliminary results of the measurement of biological aerosols and calibration methods.
Background donor concentration in HgCdTe
Authors: Izhnin I.I. , Mynbaev K.D. , Voitsekhovsky A.V. , Korotaev A.G. , Fitsych O.I. , Pociask−Bialy M. , Dvoretsky S.A.
Published: July 2015

Studies of background donor concentration (BDC) in HgCdTe samples grown with different types of technology were performed with the use of ion milling as a means of eliminating the compensating acceptors. In bulk crystals, films grown with liquid phase epitaxy and films fabricated with molecular beam epitaxy (MBE) on Si substrates, BDC of the order of ~10
Reflection and transmission from left-handed material structures using Lorentz and Drude medium models
Authors: Taya S.A. , El−Amassi D.M.
Published: July 2015

The present article investigates theoretically the refection and transmission through a lossless dielectric slab embedded between two semi−infinite left−handed materials (LHMs) in which the electric permittivity and magnetic permeability are simultaneously negative. The LHM is assumed to be dispersive according to Lorentz as well as Drude medium model. The reflection and transmission coefficients are studied with the angle of incidence, frequency and slab thickness. The effect of the damping frequency is also investigated. It is found that the damping frequency has an insignificant effect on reflected, transmitted and loss powers. Band pass filter is one of the possible applications of the proposed structure.
Immunomodelling Characteristics of Mature Dendritic Cells Stimulated by Colon Cancer Cells Lysates
Authors: Radej Sebastian , Roliński Jacek , Rawicz-Pruszyński Karol , Bury Paweł , Borowski Grzegorz , Furmaga Jacek , Chrościcki Andrzej , Wallner Grzegorz , Maciejewski Ryszard
Published: July 2015

Application of cells with high TAA (tumor associated antigen) presentation potential seems to be crucial in neoplasia immunotherapy. Such feature is distributed in dendritic cells, which present peptides from processed TAA - MHC molecules complex to the T cells of a host.

The aim of the study was to assess the influence of colon neoplasia tissue lysate on functioning of generated autologous DC’s in the field of autologous CD4+ lymphocytes immunological response towards Th1/Th2 under in vitro environment together with comparison and assessment of DCs’ immunosuppressive properties acquired from patients with colon cancer.

Material and methods. The population of this study consisted of 16 healthy- controls, 36colon cancer patients. Blood samples were collected 24h before planned surgery and preventive antibiotic therapy. Neoplastic tissue sample, was digested for cell lysates preparation. DC’s generation from PBMC was carried out in standard conditionsand medium enriched with rhGM-CSF and rhIL-4. Mature DC`s and cocultured autologous CD4 lymphocytes immunophenotype assessment was analyzed with flow cytometer. Intracellular and culture medium cytokines concentration was analyzed with ELISA and FACS method.

Results. DC`s generated from colon cancer patients stimulated with lysates presented greater maturity, lower expression of CD206 antigen, significantly higher expression of HLA-DR, CD208 and CD209 and high intracellular expression of IL-12, compared to non-stimulated cells.

Conclusions. The neoplastic tissue in vivo produces a number of substances having an unfavorable effect on immune system, our results suggests using lysates as good dendritic cells stimulators that possibly could have application in colon cancer immunotherapy
Management of Giant Hepatic Hemangioma in Atypical Localization; Report of a Case and Literature Review
Authors: Stankiewicz Rafał , Kobryń Konrad , Patkowski Waldemar , Krawczyk Marek
Published: July 2015

Hemangiomas are the most common benign primary hepatic neoplasms, often being incidentally discovered. In most of the cases they are small and asymptomatic. It is widely accepted that clinical intervention is indicated only for symptomatic hemangiomas.

We present a case of an asymptomatic giant hemangioma managed by enucleation due to its atypical localization. The hemangioma, originally located in segment 5, was now described in Computer Tomography (CT) Imaging as separating the gallbladder from the liver parenchyma. A careful evaluation of images revealed proximity to the portal vein (PV), right hepatic artery (RHA), right hepatic duct (RHD) and right branch of the portal vein (RBPV). Thus, in the case of an emergent operation, surgical maneuvers in the area of the altered hepatic anatomy and proximity to the hemangioma itself, would in fact increase the risk endangering the patient’s life. After patient’s consent, a surgical enucleation en block with the gall-bladder was performed. It is of great importance that specifically selected, asymptomatic patients diagnosed with a giant hemangioma, with the above mentioned or similar localization should be considered for surgical treatment.
The Application of Negative Pressure Wound Therapy with Installation in Diabetic Foot Associated with Phlegmon
Authors: Wachal Krzysztof , Szmyt Krzysztof , Wachal Magda , Stanisic Michał
Published: July 2015

The negative pressure wound therapy in the treatment of diabetic foot ulcers was used successfully for many years. In the case of complications associated with infection by this type of wound treatment to give very good results. From many years of sustained research on a device that could combine the advantages of the negative pressure wound therapy and drainage flow. Finally, in the last year, the first V.A.C. Ulta (KCI, USA) devices were included to the Polish hospital departments.

In this paper we present a case of a patient of successfully using a negative pressure wound therapy with installation via a set of V.A.C. Ulta in the ischemic diabetic foot syndrome complicated by phlegmon and tissue necrosis. The patient was treated in stages. In first stage was performed angioplasty of critically stenosis of the superficial femoral artery segment. Secondly, the resection of the necrotic bone revised fingers and forefoot was conducted, and in the third step the negative pressure wound therapy with installation was used. Finally, the wound was closed by the intermediate thickness skin graft. The total duration of treatment was 21 days. The patient in good general condition with a completely healed wound was discharged. Currently, after the supply with orthopedic equipment, patient regained full mobility.
The NEA Thermochemical Database Project:30 years of accomplishments
Authors: Ragoussi Maria-Eleni , Brassinnes Stéphane
Published: July 2015

The NEA Thermochemical Database (TDB) Project (www.oecd-nea.org/dbtdb/) provides a database of chemical thermodynamic values treating
the most significant elements related to nuclear waste management. The work carried out since the initiation of TDB in 1984 has
resulted in the publication of thirteen major reviews and a large set of selected values that have become an international reference in
the field, as they are characterized for their accuracy, consistency and high quality. Herein, we describe the basis, scientific
principles and organization of the TDB project, together with its evolution from its inception to the present organization as a joint
undertaking under Article 5(b) of the Statute of the OECD Nuclear Energy Agency (NEA).
Determinants of Total Factor Productivity in the Middle East and North Africa
Authors: Raggl Anna K.
Published: July 2015

A decomposition of output growth rates of Middle Eastern and North African countries shows that the contributions of human capital-augmented labor and physical capital to output growth are comparably small and stable over time and that in most countries a considerable share of output growth is attributed to growth in total factor productivity. This paper empirically assesses the determinants of total factor productivity in the Middle East and North Africa region between 1980 and 2009. The findings suggest that human capital is not only an input factor of production but also a quantity that changes the efficiency by which existing input factors are used. Domestic innovations appear to be efficient only if a certain level of educational attainment is reached by a country. In addition, human capital contributes to the ability of efficient adoption of technology from abroad and allows a faster catch-up with technological leaders. Globalization, in combination with a (comparably low) threshold endowment of human capital, is estimated to increase total factor productivity in Middle Eastern and North African countries.
Normative foundations of competitive markets and their relevance to democracy
Authors: Räsänen Petri
Published: July 2015

The economic theory of competitive markets is widely accepted as a theoretical framework for the construction of real-world global markets. Most influentially, this is apparent in the commonly accepted ideal of global free trade, with WTO as its primary proponent. The virtue of efficiency related to competitive markets is also often deemed politically neutral or, at least, unworthy of too-critical consideration. This paper argues against this contention. The theoretical axioms behind competitive markets assume a normatively and politically saturated core: self-interested agents (individuals, households and firms) who 1) are attached to consequential rationality, 2) must bypass various moral commitments and 3) are committed to specific interpretations of the concepts of freedom and justice. I will argue that attachment to these notions downplays democratic decision-making. As there is no genuine room for so-called procedural decision-making, the prospects for political innovation will be narrowed. For example, those kinds of interpretations of the concepts of freedom and justice that do not fit within the ideal of competitive markets are precluded from politically feasible options. I will argue that taking note of deliberative rationality and democracy would alleviate this problem.
Discussion on the Influence of Various Technological Parameters on Jet Grouting Columns Geometry
Authors: Bzówka Joanna , Juzwa Anna , Wanik Konrad , Wanik Lidia , Żyrek Tomasz
Published: July 2015

One of the most popular elements created by using jet grouting technology are columns. During designing such columns, it is a problem of estimating their shape and dimensions. The main factors that influence on columns geometry are soil characteristic and technological parameters. At the frame of Authors scientific research, following technological factors were taken into account: system of jet grouting, injection pressure, dimension of nozzles and rotation speed during injection. In the paper some results of the field tests of jet grouting columns are presented
NUEVAS FORMAS DE REVISIÓN POR PARES EN REVISTAS CIENTÍFICAS: REVISIÓN ABIERTA /OPEN REVIEW/ open review
Authors: Mora-Campos Andrea
Published: July 2015

La tecnología ha ayudado a mejorar muchos aspectos de la calidad de las publicaciones: más visibilidad, mayor acceso a las fuentes de información y opción de verificar fuentes, entre otros. Esto ha implicado que algunas revistas tengamos que ajustar procesos, en especial en la de revisión por pares. El sistema más utilizado por las revistas es la modalidad ciego. En el caso de nuestra revista, tradicionalmente hemos utilizado el estilo de doble ciego, pero nos hemos dado cuenta que con el avance del Internet, las redes sociales, o los medios de difusión es posible que muchos de los dictaminadores lleguen a obtener previos, preprint, investigaciones primarias o bien artículos anteriores que facilitan conocer la identidad de la persona autora y, por consiguiente, deja de lado el hecho de que la revisión sea por lo menos doble ciega. Estas experiencias nos han hecho analizar si el sistema de revisión por pares que utiliza la revista es el adecuado. En la búsqueda de analizar otras opciones de revisión por pares encontramos la revisión abierta (en inglés open review). Este editorial repasa brevemente algunas ventajas y desventajas de este tipo de revisión y la experiencia de esta revista al implementarlo.
On the role of expectations in Costa Rican business cycle: an econometric research
Authors: Gómez Trejos Felipe A.
Published: July 2015

Expectations formation of future output fluctuations as a factor for explaining Costa
Rican business cycle is the main subject addressed in this paper. The main contribution
of this research is the proposition of an econometric model for estimating the effect that
an increase in the next quarter expected real GDP has on current quarterly real GDP level.
To this end, a dynamic stochastic general equilibrium model is used as the theoretical
base for explaining the nature of the causality relationship between expected output
variability and economic fluctuations. Furthermore, a state-space representation of a
Rational Expectations (R.E.) model is developed for constructing an expectations updating
mechanism which fully characterizes the dynamics of the expected output variability. This
investigation concludes that a 1% increase in the next quarter’s expected GDP is predicted
to generate, on average, an approximate 0.67% growth on current quarterly GDP (in real
terms). From this modeling perspective, the econometric analysis concludes this effect
is statistically significant and also identifies other relevant factors for explaining Costa
Rican business cycle, such as the forecasts of economics variables that determine output
fluctuations throughout time.
EXPECTATIVAS DE INFLACIÓN EN COSTA RICA
Authors: Alfaro Ureña Alonso , Monge Badilla Carlos
Published: July 2015

The Banco Central de Costa Rica (BCCR) is currently transitioning to an Inflation
Targeting (IT) regime. In such context, it is relevant for the monetary authority to
characterize in the most complete way possible the inflation expectations of the
population, both in the particular elements of the forecasts and in the processes by
which agents take information into account for their individual predictions. This paper
documents the analysis of the inflation expectations data contained in the Monthly Survey
of Inflation and Exchange Rate Expectations. We test several hypotheses such as rational
and adaptive expectations. The results show significant biases in those expectations, while
there is also a lack of learning from past errors by the agents surveyed.
LAS NORMAS INTERNACIONALES DE INFORMACIÓN FIN ANCIERA: HISTORIA, IMPACTO Y NUEVOS RETOS DE LA IASB
Authors: Ugalde Binda Nadia
Published: July 2015

The internationalization of business transactions, business expansion through mergers and acquisitions, and the interest of covering more diversified investment portfolios,
require agencies to draft uniform accounting standards across countries to allow comparability of financial information for these new “multinational companies” (Zeff,
2012). Thus, in 1973 arises the IASC, based in London as a first attempt to establish international basic standards called International Accounting Standards. This article is
a historical overview of the institutions involved in the formulation of these rules, the implications that its implementation has had on the financial statements, how some countries have made adjustments to them and what are the main challenges that the IASB
should face in the future.
IMPACTO DE LA POLÍTICA FISCAL EN LA DISTRIBUCIÓN DEL INGRESO Y LA POBREZA EN COSTA RICA
Authors: Sauma Fiatt Pablo , Trejos Solórzano Juan Diego
Published: July 2015

Costa Rica destina el equivalente de algo más de un 20% de su PIB al financiamiento de una amplia gama de programas sociales públicos. Ese gasto social se financia principalmente con impuestos indirectos así como con las contribuciones específicas para la seguridad social. Cuando se considera el ingreso de mercado como referencia, solamente los impuestos directos resultan claramente progresivos, no así los impuestos indirectos ni las contribuciones a la seguridad social, que tienden a ser más neutrales en términos relativos. No obstante, la mayor parte de los programas sociales son progresivos, y algunos de ellos muy progresivos -especialmente los de transferencias monetarias, que son altamente focalizados-, lo cual resulta en reducciones en la pobreza y, principalmente, en la desigualdad. El estudio realizado hace evidente la enorme importancia de aumentar la magnitud y progresividad de los tributos, para darle sostenibilidad al gasto público social, así como fortalecer algunos programas focalizados que tienen un elevado impacto sobre los más pobres.

 

 
PRICE ADJUSTMENT IN COSTA RICA: A FIRST ASSESSMENT USING MICRO-DATA
Authors: Vindas Quesada Alberto José
Published: July 2015

This article explores the pricing adjustment process in Costa Rica, taking a deeper look into the micro-data that make up the Consumer Price Index for the period 2006-2013. The basic question asks if this process resembles time-dependent picing models, or if it resembles more a state-dependent process. This is done analysing a series of random effects regressions to explore the relations between inflation rate, frequency of pricing adjustments and their average magnitude. The main conclusions are that 1) there is considerable heterogeneity between product categories, 2) price decreases follow a very stable pattern that does not depend on the overall inflation rate, 3) the average size of the price increases is influenced by a very small magnitude by the inflation rate, 4) the proportion of prices increasing each month is strongly positively correlated with the inflation rate, and 5) state-dependent specifications fit better these facts.
LA INFLUENCIA DEL ACCESO AL USO DE COMPUTADORAS EN EDAD TEMPRANA SOBRE EL RENDIMIENTO EN MATEMÁTICAS
Authors: Fernández Aráuz Andrés
Published: July 2015

¿El acceso al uso de computadoras en edades tempranas tiene impacto sobre el rendimiento educativo de los estudiantes? La evidencia empírica de diseños experimentales muestra poca o nula relación entre el uso de las TIC’s y el rendimiento académico, evaluando los resultados a uno o dos años plazo, pero con la base de datos de la evaluación PISA se puede analizar esta asociación varios años después de que el estudiante tuvo acceso a una computadora por primera vez.

Realizando un análisis exploratorio de los datos de los estudiantes costarricenses en la evaluación matemática de PISA 2012, y mediante la estimación de un modelo de regresión lineal, se logra comprobar que incluso controlando por factores con alto poder explicativo del rendimiento académico, la edad a la que se tuvo acceso a una computadora por primera vez sí es un determinante del rendimiento educativo.

 

 
PERSISTENCIA INFLACIONARIA EN COSTA RICA: PRECIOS DE SERVICIOS Y REGULADOS
Authors: León Murillo Jorge , Valerio Berrocal Marco
Published: July 2015

El documento estudia el grado de persistencia inflacionaria y las rigideces de precios, a nivel desagregado y agregado, de los artículos del Índice de Precios al Consumidor (IPC) en los subíndices de Bienes-Servicios y No regulados-Regulados en Costa Rica. La medición se basa en dos enfoques: el paramétrico se basa en un esquema autorregresivo con media constante y el estructural se basa en la estimación de una Curva de Phillips Neo Keynesiana híbrida. El análisis incluye tanto series de tiempo, como de datos de panel.

La evidencia apunta a que los precios de artículos regulados y servicios poseen mayores grados de persistencia, además de presentar rigideces en su patrón de ajuste. Se encontró que utilizando datos desagregados la persistencia inflacionaria es menor a las estimaciones univariadas con datos agregados, además el nivel de persistencia tiende a reducirse aún más cuando se excluyen los artículos regulados o los servicios del IPC.
Evaluación de impacto de la implementación de transferencias monetarias condicionadas para educación secundaria en Costa Rica (Avancemos)
Authors: Mata Catherine , Hernández Karla
Published: July 2015

En este trabajo se evalúa el impacto del programa de transferencias monetarias condicionadas para
secundaria, Avancemos, en Costa Rica. Específicamente, se mide el impacto sobre la deserción
estudiantil para el primer año en el que se implementó el programa, mediante un panel creado con
datos de las Encuestas de Hogares de Propósitos Múltiples para los años 2006 y 2007, elaboradas
por el Instituto Nacional de Estadística y Censos. Por medio de herramientas econométricas
y metodologías de impacto cuasi-experimentales (Propensity Score Matching y Diferencia en
Diferencias), se encuentra un impacto positivo asociado al programa, tanto sobre la deserción como
sobre la reinserción. Específicamente, entre un 10% y 16% de los estudiantes que no desertaron del
sistema educativo, lo hicieron única y exclusivamente debido a Avancemos, de otra forma hubiesen
abandonado sus estudios. Por lo tanto, este es un programa con impactos positivos sobre sus objetivos
planteados: evitar la deserción y procurar la reinserción.
El efecto traspaso de la tasa de interés de los instrumentos del Banco Central en Costa Rica hacia las tasas de interés del sistema financiero
Authors: Barquero Romero José Pablo , Mora Guerrero David Ricardo
Published: July 2015

El trabajo consta de dos partes. En la primera se prueban, a partir del enfoque de cointegración de
Engle y Granger (1987), las siguientes hipótesis: i) el efecto traspaso es unitario, ii) el efecto traspaso
sufrió una variación al adoptar un nuevo arreglo cambiario en octubre de 2006, iii) la velocidad
de ajuste aumentó con el cambio del régimen cambiario (no linealidad), iv) los bancos del sistema
financiero no ajustan simétricamente las tasas de interés (con el fin de aumentar su margen de
intermediación). En la segunda parte, se analizan los factores que influyen sobre la efectividad del
mecanismo de transmisión, entre ellos, la dolarización financiera, la concentración bancaria, el nivel
de deuda interna del Gobierno y el déficit primario del Banco Central de Costa Rica. Estas últimas
dos variables, como porcentaje del Producto Interno Bruto (PIB).
Annual Ryegrass (Lolium multiflorum), Johnsongrass (Sorghum halepense), and Large Crabgrass (Digitaria sanguinalis) are Alternative Hosts forClavibacter michiganensissubsp.nebraskensis, Causal Agent of Goss's Wilt of Corn
Authors: Ikley Joseph T. , Wise Kiersten A. , Johnson William G.
Published: July 2015

Goss's bacterial wilt and leaf blight of corn is caused by the bacteriumClavibacter michiganensissubsp.nebraskensis(Cmn). This disease has recently re-emerged as an important disease in the Midwestern United States (US) and continues to spread. Cultural practices are currently the only methods available for controlling the disease. Weedy species in the generaEchinochloa,Setaria, andSorghumhave previously been described as alternative hosts of Cmn. The objective of this research was to use an isolate of Cmn from the eastern Midwest to examine the host status of previously confirmed hosts, as well as test whether additional weedy or cover crop species are alternative hosts of the bacterium. Plants were inoculated with a suspension of 1 × 108colony-forming units of Cmn per milliliter in a greenhouse experiment. Leaves were observed for typical symptoms of Goss's wilt 7 d after inoculation. Pathogen presence was determined by observing bacterial streaming microscopically, and isolating Cmn from symptomatic plants. Putative colonies of Cmn were confirmed with the use of morphological and molecular methods. Koch's Postulates were completed on populations of new plant species that showed symptoms. Results revealed three new hosts of Cmn: annual ryegrass, johnsongrass, and large crabgrass. In contradiction to previous reports, barnyardgrass was not a host of Cmn in this study. Results also confirm that giant foxtail, green foxtail, shattercane, and yellow foxtail are hosts of Cmn. These results redefine the known host range of Cmn and are important in identifying additional sources of inoculum to improve our understanding of the epidemiology of Goss's wilt.
Crônicas de Malazarte VIII
Authors: Andrade Márío
Published: July 2015

.
Um cavalheiro de antigamente
Authors: Dourado Autran
Published: July 2015

.
Leitoras de Carne e Osso: A Mulher e as Condições da Leitura no Brasil no Século XIX
Authors: Zílberman Regina
Published: July 2015

Cet essai a pour but I'étude de l'éducation des femmes au Brésil dans la seconde moitié du XIXeme siecle, aussi bien que la création et l'ascension d'un public de lectrices manipulé par des écrivants.
Tarkovski: a pastoral impossível
Authors: Maciel Emílio
Published: July 2015

Resumo: O presente ensaio analisa a obra de Andrei Tarkovski, tomando como ponto de partida as relações entre seus filmes e seus escritos teóricos. Ao mesmo tempo, discutindo o lugar que o diretor ocupa no cinema moderno, pretende-se mostrar como Tarkovski se distancia daquilo que Martin Jay chamou de “discurso anti-ocularcêntrico”.Palavras-chave: romantismo; cinema moderno; Tarkovski; Martin Jay.Abstract: The present essay analyses the work of Andrei Tarkovski, focusing on the relations between his films and his theoretical writings. At the same time, by discussing the place of this director in modem cinema, we intend to show how Tarkovski keeps his distance from what Martin Jay has called “the anti­ocular centric discourse”.Keywords: romanticism; modem cinema; Tarkovski; Martin Jay.
The Visions of Orpheus in Milton's Lycidas
Authors: Sá Luiz Fernando Ferreira
Published: July 2015

Resumo: As alusões ao mito de Orfeu em “Lycidas” de John Milton serão analisadas pela perspectiva de um signo relacional. Uma vez que o poema apresenta olhares opostos e diferentes incorporados no seu texto, a reescrita renascentista do mito de Orfeu será associada às mudanças de olhares, será acessada como a estrutura modeladora subjacente às transições entre um ponto de vista inocente e um ponto de vista iluminado e será pensada como uma tomada (fragmentada) de consciência no processo de definição de duas ordens de existência: a humana e a divina.Palavras-chave: olhar; ponto de vista; Orfeu; Milton.Abstract: In John Milton’s “Lycidas” the allusions to the Orpheus myth will be analyzed through the perspective of a relational sign. Since the poem has different and opposing gazes incorporated into the text, the Renaissance rewriting of the Orpheus myth will be associated with the changes of gazes, will be assessed as the modeling frame that underlies the transitions from an innocent to an enlightened viewpoint, and will be focused as the fragmented configuration of consciousness in the process of defining two orders of existence: the human and the divine.Keywords: gaze; viewpoint; Orpheus; Milton.
"Porque vai o homem para onde a escrita for"
Authors: Maia Elisa Arreguy
Published: July 2015

.
Qual é a questão?
Authors: Silva Sérgio Antônio
Published: July 2015

.
Literatura, Psicanálise e...
Authors: Peres Ana Maria Clark
Published: July 2015

A partir de um diálogo com o último ensino de Jacques Lacan (notadamente seu seminário O sinthoma) e com o ensino de Jacques-Alain Miller, e cotejando a experiência analítica e a experiência literária, este trabalho procura refletir sobre os escritos de Machado de Assis, tentando demonstrar que seu processo de escrita pode ser comparado ao trabalho de um lapidador de diamantes: ao mesmo tempo em que lapida sua escrita (trata-se de seu savoir-faire de artista), ele “lapida” também seu sintoma, na perspectiva de um savoir y faire (saber lidar com o sintoma).
A letra em seu devido lugar
Authors: Greco Musso Garcia
Published: July 2015

A oficina de letras (letra, segundo Lacan) busca criar um ponto de ancoragem para o sujeito psicótico, desconstruindo seu saber absoluto, através da articulação literatura e psicanálise, em sua função metonímica.
Uma ponte entre duas quedas: Calisto Elói e a nação portuguesa, Policarpo Quaresma e a nação brasileira
Authors: Drummond Adriano Lima
Published: July 2015

Este artigo constitui uma comparação analítica entre os personagens Calisto Elói, da novela A Queda dum Anjo, de Camilo Castelo Branco, e Policarpo Quaresma, do romance Triste Fim de Policarpo Quaresma, como representantes simbólicos de suas respectivas nações – o Portugal em meados do século XIX e o Brasil republicano no fim desse mesmo século.
Romance de Romeu e Julieta: tradução, memória e cultura popular
Authors: Galery Maria Clara Versiani
Published: July 2015

Este artigo examina as semelhanças entre memória e tradução, ao mesmo tempo em que tece uma reflexão sobre o problema da identidade cultural. O conto de Jorge Luis Borges, “La memoria de Shakespeare”, é explorado como um pretexto para a discussão do convívio entre duas tradições, a erudita e a popular. Valendo-se do conceito de transculturação, este artigo demonstra como o folheto de literatura de cordel Romance de Romeu e Julieta adapta um enredo que Shakespeare tornou conhecido, transportando-o para o contexto do nordeste brasileiro.
Usos e abusos da Antigüidade Clássica: sobre a apropriação do cinismo grego na descrição contemporânea de distúrbios psíquicos
Authors: Júnior Olimar Flores
Published: July 2015

Examinando particularmente a “síndrome de Diógenes” e a idéia de “gozo cínico” aplicado na tipificação do toxicômano das sociedades pós-modernas, este artigo retoma de maneira breve e sucinta o problema da leitura e das apropriações da antigüidade clássica na caracterização de fenômenos culturais contemporâneos (ou pelo menos descritos na contemporaneidade). Sem qualquer intenção crítica diante dos fenômenos descritos, já que a perspectiva adotada é a da história da filosofia e não a do domínio específico da psiquiatria e da psicanálise, busca-se apenas demonstrar, através de uma remissão sistemática ao texto das fontes antigas – neste caso, ao corpus cínico –, os limites metodológicos e os conseqüentes equívocos em que tal prática pode incorrer.
Francisco de Paula Meneses: discursos de 1848 a 1853
Authors: Souza Roberto Acízelo
Published: July 2015

Francisco de Paula Meneses (1811-1857), médico e professor de retórica e poética no Colégio Pedro II, foi um dos primeiros mestres a lecionar literatura brasileira, nas décadas de 1840 e
1850. Os discursos ora reproduzidos foram pronunciados por ocasião das solenidades de colação de grau dos bacharéis de 1848 e 1853. No primeiro, defende concepções românticas então na ordem do dia, sobretudo a natureza institucional da literatura e seu vínculo constitutivo com as sociedades nacionais, propondo-se demonstrar genericamente “a influência das letras sobre o estado moral e social de um povo”. No segundo, empreende a defesa do que chama “método histórico” – de preferência ao “dogmático” – no ensino das literaturas modernas em geral e da nossa em particular, o que lhe fornece ocasião para considerações crítico historiográficas sobre escritores brasileiros da época colonial, com relevo para Cláudio Manuel da Costa, Basílio da Gama e Santa Rita Durão.
Quase pintura: poesia e visualidade em Pau Brasil, de Oswald de Andrade
Authors: Cortez Luciano
Published: July 2015

A reconstituição dos dados da paisagem revelam os modos operatórios do discurso poético de Oswald de Andrade para traduzir o mundo em poesia. Essa tradução se fez por meio da transposição de recursos de linguagem próprios às artes plásticas das vanguardas européias de inícios do século XX para o universo da palavra. Seu resultado foi uma poesia capaz de reproduzir no plano verbal o dinamismo do mundo moderno. Em Oswald de Andrade isso implicou a elaboração de uma poesia com sabor primitivista próximo ao que reconhecera na pintura cubista.
Palavras, sons e imagens em cartaz: aspectos de intermidialidade no romance Benjamin, de Chico Buarque, e na adaptação cinematográfica de Monique Gardenberg
Authors: Barros Leila Cristina
Published: July 2015

A obra de Chico Buarque revela forte vocação para explorar o terreno da intertextualidade, seja ela em forma de paráfrase, paródia, pastiche, alusão, ou ainda de tradução, tendência que culminou em uma obra ficcional intimamente vinculada ao cinema. Além do caráter intertextual, multiplos aspectos intermidiais podem ser detectados tanto no livro Benjamim como no filme homônimo de Monique Gardenberg: a linguagem cinematográfica do romance e as várias mídias
presentes e relacionadas intimamente entre si, dentro do filme. A combinação e a fusão dessas relações intertextuais e intermidiáticos, no romance e na adaptação, remetem-nos ao conceito de transtextualidade – desenvolvido por Gérard Genette a partir dos termos “dialogismo”, de Mikhail Bakhtin, e “intertextualidade”, de Julia Kristeva, e apropriado pelo crítico de cinema Robert Stam.
A complexização do objeto artístico: uma análise da obra de Angela Lago
Authors: Mendes André
Published: July 2015

Esse artigo pretende defender a idéia de que as ilustrações produzidas por Angela Lago, por serem sistemas complexos, são capazes de acrescentar ao texto escrito ao qual reportam um maior número de significados, ampliando as possibilidades de leitura dessas obras, enriquecendo-as como objeto artístico.
Trasnposição e variação na poesia gráfixca e espacial de Salette Tavares
Authors: Torres Rui
Published: July 2015

Este artigo tem como objectivo apresentar uma leitura da poesia gráfica e espacial de Salette Tavares à luz dos processos de intersemiose que esta articula, na frequente transposição entre texto, sons, imagens e objectos. A produção da autora é enquadrada com o experimentalismo literário português da segunda metade do século XX, movimento profícuo na construção de formas poemáticas de carácter híbrido, em que se verificam processos de transposição e variação semelhantes aos observados na autora em análise.
Um palimpsesto impossível
Authors: Diniz Dilma Castelo Branco
Published: July 2015

Este estudo trata da questão do exílio em Le figuier enchanté, de Marco Micone, um escritor italiano imigrante no Quebec. O autor revela a problemática da adaptação em outro país, através de uma visão ao mesmo tempo pessoal e coletiva, mostrando que a cultura do imigrante é sempre híbrida, um palimpsesto impossível.
Cafés, bondes e carnavais
Authors: Vieira Elisa Amorim
Published: July 2015

Este texto tem por objetivo refletir sobre a configuração das múltiplas imagens do Rio de Janeiro do Segundo Império presentes nas crônicas de Machado de Assis. Ressaltam-se o conflito entre modernidade e tradição que perpassa esses textos e a forma pela qual a visão fragmentada da cidade se traduz numa escrita que privilegia a descontinuidade.
Histórias de rua ou sexo & violência: o realismo suburbano de Fernando Bonassi
Authors: Silva Maurício
Published: July 2015

Este artigo procura analisar as principais características da produção literária de Fernando Bonassi, um dos autores contemporâneos que, com mais persistência, procurou promover uma série de deslocamentos estruturais em sua ficção. Destacando aspectos formais e temáticos de sua obra, o presente texto insere o autor no diversificado plano estético do realismo suburbano.
Entre o eu e o outro: uma análise da presença especular do outro em Borges
Authors: Fiorotti Devair Antônio
Published: July 2015

Este estudo visa discutir a forma como Jorge Luis Borges trabalha a relação entre o eu e o outro, partindo da questão especular. Incomodado pela repetição com que o autor lida com esse tema, analiso as conseqüências de se pensar a separação de um eu que também seria o outro, já que a linguagem é construtora tanto de um quanto do outro.