bluuebunny/crossref_metadata_2025 huggingface dataset:
Hospedantes alternos de Iris yellow spot virus y trips en cultivos de cebolla de Morelos y Michoacán, México
Authors: Ávila Alistac Norma , Ramírez Rojas Sergio , Rebollar Alviter Ángel , Guzmán Plazola Remigio Anastacio
Published: April 2017

El objetivo de la investigación fue identificar hospedantes alternos de Iris yellow spot virus (IYSV) y establecer el rango de hospedantes del putativo vector(es) en regiones productoras de cebolla (Allium cepa) de Morelos y Michoacán, México. En 10 localidades de ambos estados se muestrearon cultivos de cebolla y arvenses, en presencia y ausencia del cultivo. Las plantas de cebolla se analizaron por RT-PCR y las arvenses por DAS-ELISA. Las arvenses se identificaron a nivel especie, los trips colectados de las mismas se establecieron colonias para su identificación por PCR, con iniciadores específicos que amplifican un segmento del gen de citocromo oxidasa I (COI). Se analizaron e identificaron 295 arvenses agrupadas en 56 especies (23 familias), todas resultaron negativas para IYSV. Se detectaron trips en 75 arvenses agrupadas en 17 especies. Se analizaron 33 poblaciones de trips (22 de Morelos y 11 de Michoacán). La secuenciación indicó identidad con Thrips tabaci con una homología superior a 97 %. Las arvenses Ricinus communis y Acalypha ostryifolia registraron el mayor número de T. tabaci. En cebolla se confirmó la presencia de IYSV con RT-PCR en las 10 parcelas muestreadas. Este es el primer reporte de la presencia de IYSV en el estado de Michoacán.
EXAMINING THE PREDICTIVE EFFECT OF IMPULSIVITY LEVELS AND PERSONALITY TRAITS ON METACOGNITIVE THOUGHTS
Authors: ERMİŞ Ece Naz
Published: April 2017

AbstractThe aim of this study was to determine the predictive effects of impulsivity levels and distinct personality traits (neuroticism, extraversion and psychotic) on metacognitive thoughts across a healthy population. The study was carried out with 69 university students who were selected randomly (60 female, 9 male; 18-28 ages). Eysenck Personality Questionnaire, MCQ-30 Metacognition Scale, Barratt Impulsiveness Scale-Short Form and a demographical information form were used for data collection. Regression analyses were used in data examining. Findings revealed a statistically significant positive effect of neuroticism on metacognition. According to statistical analysis, there was a predictive effect of non-planning subscale scores of impulsivity on cognitive awareness subscale scores of metacognition. Furthermore, there was a statistically significant predictive effect of attentional subscale scores of impulsivity on cognitive confidence subscale scores of metacognition scale. The results were discussed regarding the limitations of the study and the suggestions were provided for future studies. KeyWords: Metacognition, Impulsivity, Personality
The Influence of Gender and Attachment Styles on The Relationship Between Marital Adjustment and Psychological Symptoms
Authors: Körük Serdar , Kul Aykut
Published: April 2017

The research is a quantitative study investigating the moderating effects of gender and adult attachment styles on the relationship between marital adjustment and psychological symptoms by using correlational design. The sample of the study consists of 178 Turkish married individuals. Personal Information Form, Brief Symptom Inventory and Dyatic Adjustment Scale were used for gathering data. The hypothetical model was formed and tested through structural equational modeling. Psychological symptoms were determined as dependent variable, marital adjustment as independent variable, attachment styles and gender were determined as moderating variables in the hypothetical model. The model’s fit indexes were found in an acceptable level. It was found that secure, fearful and dismissing attachment styles and gender moderates the relationship between marital adjustment and psychological symptoms in a significant level.   Keywords: marital adjustment, psychological symptoms, attachment
Academic Engagement and Achievement Orientation as Correlates of Reading Culture of In-School Adolescents
Authors: Ngwoke Dominic Ugwoke , Adimora Dorothy Ebere , Oyeoku Eke Kalu , Onwuka Gloria Tobechukwu
Published: April 2017

The study investigated the academic engagement and achievement orientation as correlates of reading culture of in-school adolescents in Enugu State, Nigeria. Using correlational survey research design, the study made use of a population of 3469 senior secondary 11 (SS11) in-school adolescents. A purposive sampling and stratified random sampling techniques were used to draw a sample of 340 in-school adolescents. Four research questions and two null hypotheses tested at 0.05 level of significance guided the study. The three instruments used for data collection were in-school adolescents’ academic engagement scale (IAES), in-school adolescents’ achievement orientation scale (IAAOS) and in-school adolescents’ reading culture scale (IARCS). Research questions 1-3 were answered using means and standard deviation whereas research questions 4 and 5 were answered using Pearson r and R-square. The hypotheses were tested using analysis of variance (ANOVA) at 0.05 level of significance. It was found that in-school adolescents’ academic engagement and achievement orientation significantly related with their reading culture. Based on the findings of the study, it was recommended among others that, the government, school administrators and educators put concerted effort to encourage students to be mastery  oriented and academically engaged in order to prevent deleterious outcomes associated with poor reading culture since high academic engagement  and high achievement orientation relates with positive academic outcomes. Keywords: Adolescence, Academic Engagement, Cognitive Engagement, Achievement Orientation and Reading Culture.
Stress factors and quality of life in adult hemodialysis patients
Authors: SOPONARU Camelia , BOJIAN Ancuta , IORGA Magdalena
Published: April 2017

The aim of the study is to investigate the influence of physiological and psychosocial stress on the quality of life (QoL) in a group of hemodialysis (HD) patients from our center. Materials and methods: A number of 70 patients were included in the study. We used the Hemodialysis Stressors Scale, in order to estimate the stress level, and the Short Form-36 (SF-36) Health Survey Questionnaire, to evaluate the QoL. Results: The M for age = 54.5 ± 11.7 years and 38.6% were men. Patients with a low level of stress had significantly higher physical health (M = 53,52; p = 0.04) and mental health (M = 51,61; p <0.01) scores. The disease-related factors that induced the highest level of stress were the physical symptoms (1.67 ± 0.68), the food and water intake restrictions (1.64 ± 0.76), the vascular access problems (1.44 ± 0.83), the daily activity limitations (1.22 ± 0.72), the dependence on the medical staff (1.14 ± 0.74). Socio-economical and demographical factors had no effect on stress and QoL. Conclusions:  The study prove the importance of stress for the QoL in HD patients. Efforts should be undertaken to minimize stress factors. Keywords: Dialysis; stress; physical well-being; psychological well-being; quality of life;
Message from editor
Authors: Bozkurt Prof. Dr. Tulay
Published: April 2017

Editör yazısı
Psychometric Properties of Job Satisfaction Scale in Slovak Helping Professions: Preliminary Results
Authors: Mesarosova Margita
Published: April 2017

Problem Statement; Job satisfaction is associated with positive outcomes at work and in certain other aspects of life. Job satisfaction is regarded as an important indicator to determine the levels of career success and accomplishment. In the past decades, job satisfaction among the worker in helping professions has received little attention in Slovakia. Purpose of Study; The purpose of this study was to adapt JSS to Slovak language so that it can be used in Slovakia especially on helping personnel in social care. In this study, we aimed to confirm its factor structure, analyse its convergent and discriminant validity, and internal consistency. Methods; The 36-item Job Satisfaction Scale (JSS, Spector, 1985) was used to measure job satisfaction.  This scale was translated into Slovak language using forward translation, assessment of forward translation, backward translation, assessment of backward translation, and local meeting with professionals. External students of social work and workers who practiced helping professions in social care  participated in the research and completed Job Satisfaction Scale, Professional Quality of Life Scale (Stamm (2010), Life Orientation Test – Revised (Scheier, Carver, & Bridges (1994), Scales on Well-Being (SEHP) (Dzuka, & Dalbert, 2002).  The internal consistency and discriminant validity of JSS was examined. Findings and Results; It was revealed that higher level of job satisfaction was linked with optimism, higher frequency of experiencing positive emotions and lower frequency of experiencing negative emotions. Conclusions; The preliminary results confirmed the factor structure of JSS. Description of the psychometric properties of the Slovak version of the Job Satisfaction Scale and the interpretation of the results will be discussed in the paper. Keywords: Job satisfaction; helping professions; validity; reliability
FLUORIDE IN GROUNDWATER AND ITS EFFECTS ON HUMAN HEALTH
Authors: ATASOY Ayse Dilek , YEÅžİLNACAR Mehmet İrfan , YAZICI Benan , ÖZDEMİR ÅžAHİN Müge
Published: April 2017

Fluoride contents higher than the permissible levels lead to negative effects on the human health. More than 200 million people in the world were adversely affected from the fluoride. Fluoride levels in water were higher than the World Health Organizationâ€™s (WHO) recommended level. Endemic fluorosis originating from the consumption of high fluorine water was observed also in some parts of Anatolia. Volcanic formations are found in areas with high fluoride concentrations in ground waters. In this study, fluoride concentration of water was researched in ÅžanlÄ±urfa where comprised generally sedimental formations and where the fluorosis cases were identified on the primary school students. High fluoride levels were assigned in water samples from the wells in SarÄ±m and KarataÅŸ villages in ÅžanlÄ±urfa.Â Keywords: Fluoride, hydrogeochemistry, dental fluorosis, ÅžanlÄ±urfaÂ Â Â
An Examination of the Relationship between Flow Parameters and Symptoms According to Fire Phase in a Mine Model
Authors: Kecel Selcuk
Published: April 2017

This study examines the relationship between temperature, CO dispersions, symptoms, and COHb% levels accumulated in the blood on available ventilation conditions in cases of fire at point in an underground mine model. Based on operating parameters (air velocity and direction) of the ventilation system in the underground mine model, fast growing phase fire analyses were conducted according to the heat release rate (HRR) value in the range of 0-61.34MW. In fire scenarios prepared according to the hydrocarbon fuel type (C2.3H4.2O1.3), boundary conditions were calculated depending on the combustion equation considering fuel lower heating value (Qc). CO dispersions inside the tunnel were examined by transferring the time-dependent boundary conditions to the computational fluid dynamics (CFD) program. yCO, COHb%, and COHb%/âˆ†t changes were calculated according to the HRR value.  Findings regarding the effects of CO emission (acute and chronic poisoning), were expressed according to the HRR value.
Keywords Combustion Model Design, Heat Release Rate (HRR), Carbon Monoxide emission, Symptoms and Survival Time, Computational Fluid Dynamics (CFD);
Determining undergraduate students’ environmental awareness and environmental sensitivity
Authors: Yilmaz Nihan , Sibel Erkal
Published: April 2017

This study aims to determine undergraduate students’ environmental awareness and sensitivity. This study used the environmental awareness and sensitivity scale to determine undergraduate students’ environmental awareness and sensitivity. The study group for this study includes 224 undergraduate students studying in Hacettepe University’s Family and Consumer Sciences Program. The results reveal that on a 5-point Likert scale, these undergraduate students’ environmental awareness level is higher than average (3 points) with a value of =3.50, and their environmental sensitivity level is much higher than their environmental awareness at =3.80. In conclusion, it was determined that undergraduate students’ environmental awareness and sensitivity levels vary significantly by gender, parental educational status and level of income (p<0.01).
Keywords: environment, environmental consciousness, environmental sensitivity
From the editor
Authors: Soran Prof. Dr. Haluk
Published: April 2017

EditÃ¶r yazÄ±sÄ±
On the Anonymity Risk of Time-Varying User Profiles
Authors: Puglisi Silvia , Forné Jordi , Rebollo-Monedero David
Published: April 2017

Websites and applications use personalisation services to profile their users, collect their patterns and activities and eventually use this data to provide tailored suggestions. User preferences and social interactions are therefore aggregated and analysed. Every time a user publishes a new post or creates a link with another entity, either another user, or some on-line resource, new information is added to the user profile. Exposing private data does not only reveal information about single users' preferences, increasing their privacy risk, but can expose more about their network that single actors intended. This mechanism is self-evident on \emph{social networks} where users receive suggestions based on their friends' activity. We propose an information theoretic approach to measure the differential update of the anonymity risk for time-varying user profiles. This expresses how privacy is affected when new content is posted and how much third party services get to know about the users when a new activity is shared. We use real Facebook data to show how our model can be applied on a real world scenario.
Synergistic Antibacterial Effects of Chitosan-Caffeic Acid Conjugate against Antibiotic Resistant Acne-Related Bacteria
Authors: Kim Ji-Hoon , Yu Daeung , Eom Sung-Hwan , Kim Song-Hee , Oh Junghwan , Jung Won-Kyo , Kim Young-Mog
Published: April 2017

The object of this study was to discover an alternative therapeutic agent with fewer side effects against acne vulgaris, which is one of the most common skin diseases. Acne vulgaris often associates with acne-related bacteria such as Propionibacterium acnes, Staphylococcus epidermidis, Staphylococcus aureus and Pseudomonas aeruginosa, some of which exhibit a resistant against commercial antibiotics used in the treatment of acne vulgaris (tetracycline, erythromycin, and lincomycin). In the current study, we evaluated in vitro antibacterial activity of chitosan-phytochemical conjugates against acne-related bacteria. Three of chitosan-phytochemical conjugates used in this study showed stronger antibacterial activity than that of chitosan (unmodified control). Chitosan-caffeic acid conjugate (CCA) exhibited the highest antibacterial activity against acne-related bacteria with minimum inhibitory concentration values of 8 μg/mL to 256 μg/mL. In addition, the MICs of antibiotics against antibiotic resistant P. acnes and P. aeruginosa strains were dramatically reduced in the combination with CCA, suggesting that CCA would restore the antibacterial activity of the antibiotics. The analysis of fractional inhibitory concentration indices clearly revealed a synergistic antibacterial effect between CCA and the antibiotics. Thus, the median ∑FIC values against the antibiotic resistant bacterial strains were ranged from 0.375 to 0.533 in the combination mode of CCA and antibiotics.
Modular, Discrete Micromixer Elements Fabricated by 3D Printing
Authors: Bhargava Krisna C. , Ermagan Roya , Thompson Bryant , Friedman Andrew , Malmstadt Noah
Published: April 2017

3D printing facilitates the straightforward construction of microchannels with complex three-dimensional architectures. Here, we demonstrate 3D-printed modular mixing components that operate on the basis of splitting and recombining fluid streams to decrease interstream diffusion length. These are compared to helical mixers that operate on the principle of chaotic advection.
Synthesis and Sintering of ZnO Nanopowders
Authors: Aimable Anne , Goure Doubi Hervé , Stuer Michael , Zhao Zhe , Bowen Paul
Published: April 2017

Nanopowders are continuously under investigation as they open new perspectives in numerous fields. There are two main challenges to stimulate their development: sufficient low-cost high throughput synthesis methods leading to a production with well-defined and reproducible properties, and for ceramics, conservation of their nanostructure after sintering. In this context, this paper presents the synthesis of a pure nanosized powder of ZnO (dv50 ~ 60 nm, easily redispersable) by using a continuous Segmented Flow Tubular Reactor (SFTR), which has previously shown its versatility and its robustness, ensuring a high powder quality and reproducibility over time. A higher scale of production can be achieved based on a “scale-out” concept by replicating the tubular reactors. The sinterability of ZnO nanopowders synthesized by the SFTR was studied, by natural sintering at 900 °C and 1100 °C, and Spark Plasma Sintering (SPS) at 900 °C. The performances of the synthesized nanopowder were compared to a commercial ZnO nanopowder of high quality. The samples obtained from the synthesized nanopowder could not be densified at low temperature by traditional sintering, whereas SPS led to a fully dense material after only 5 minutes at 900 °C, while limiting the grain growth and thus leading to a nanostructured material.
Depression and Patient-Reported Outcomes Following Total Shoulder Arthroplasty
Authors: Werner Brian C. , Wong Alexandra C. , Chang Brenda , Craig Edward V. , Dines David M. , Warren Russell F. , Gulotta Lawrence V.
Published: April 2017

Background:

Recent studies have found that depression is associated with increased pain and impairment following lower-extremity arthroplasty; however, this association has not been investigated for total shoulder arthroplasty. The objective of this study was to investigate the association between depression and patient-reported outcomes following total shoulder arthroplasty.

Methods:

A prospectively collected institutional registry was queried for consecutive patients who underwent total shoulder arthroplasty for osteoarthritis from 2007 to 2013 with baseline and minimum 2-year postoperative American Shoulder and Elbow Surgeons (ASES) scores. Revision procedures and total shoulder arthroplasty for diagnoses other than osteoarthritis were excluded. Patients with a preoperative diagnosis of depression (n = 88) formed the study cohort; control patients without a diagnosis of depression were matched to the study patients by age and sex in a 2:1 ratio (n = 176). Baseline characteristics and patient-reported outcome measures were compared between groups, as were minimum 2-year patient-reported outcomes and change in patient-reported outcomes. A multivariable regression was performed to investigate the independent effect of depression on improvement in ASES scores.

Results:

Except for the Short Form-12 Mental Component Summary (SF-12 MCS) scores, there were no significant differences (p > 0.05) in baseline characteristics between study patients and controls. There was a significant improvement in the ASES score for patients with depression (p < 0.0001) and controls (p < 0.0001). Patients with depression had significantly lower final ASES scores (p = 0.001) and less improvement in ASES scores (p = 0.001) and SF-12 Physical Component Summary scores (p = 0.006) as well as lower satisfaction levels at 2 years; however, the latter difference did not reach clinical importance. Depression (p = 0.018) was an independent predictor of less improvement in ASES scores.

Conclusions:

Patients with a diagnosis of depression should be counseled that they will experience a significant clinical improvement from baseline after total shoulder arthroplasty. A preoperative diagnosis of depression is an independent predictor of significantly less improvement in ASES scores following total shoulder arthroplasty; however, this difference does not reach clinical importance and should not discourage patients with a clinical diagnosis of depression from undergoing total shoulder arthroplasty.

Level of Evidence:

Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.
Assessing the production and nutritive value of warm‐season legumes in Oklahoma and Texas
Authors: Butler Twain J. , Interrante Sindy M. , Foster Jamie L.
Published: April 2017

Inclusion of warm‐season forage legumes in livestock grazing systems may increase forage quantity by maintaining the grazing season during dry periods and enhancing nutritive value. Two field experiments were conducted to evaluate forage yield and nutritive value of several warm‐season legumes across different environments and soil pH levels in Oklahoma and Texas. Earn 1 CEU in Crop Management by reading this article and completing the quiz at www.certifiedcropadviser.org/certifications/self‐study/621.
Influence of herbicide programs on glyphosate‐resistant giant ragweed density, soybean yield, and net economic return
Authors: Riley Eric B. , Massey Raymond E. , Bradley Kevin W.
Published: April 2017

Separate field experiments were conducted in 2011 and 2012 to determine the influence of herbicide programs on the density of glyphosate‐resistant (GR) giant ragweed, yield, and net return in glyphosate‐ and glufosinate‐resistant soybean. Earn 1 CEU in Integrated Pest Management by reading this article and completing the quiz at www.certifiedcropadviser.org/certifications/self‐study/656.
Ammonium and nitrate distribution in soil using drip and microsprinkler irrigation for citrus
Authors: Kadyampakeni Davie M. , Morgan Kelly T. , Schumann Arnold W. , Nkedi-Kizza Peter , Mahmoud Kamal
Published: April 2017

Good management of N is critical for improved citrus production and environmental sustainability on Florida sandy soils. Thus, understanding N movement in the root zone is important to devise appropriate nutrient management strategies. Field experiments were conducted on citrus at two sites in Florida to: (i) determine the soil moisture distribution in the irrigated and unirrigated zones as a function of time and depth; (ii) determine NH4+–N and NO3−–N distribution patterns in the irrigated and unirrigated zones as a function of depth, lateral distance, and fertilizer application method; and (iii) determine NH4+ sorption in a fertilizer mixture due to cation exchange. Earn 1 CEU in Soil & Water Management by reading this article and completing the quiz at www.certifiedcropadviser.org/certifications/self‐study/655.
Acidification in the inland Pacific Northwest
Authors: McFarland Carol , Huggins David R.
Published: April 2017

The dramatic rolling hills of the inland Pacific Northwest (iPNW), formed from deep deposits of volcanic ash and wind‐blown loess, feature some of the world's most productive soils. Alarmingly, a growing trend of extremely low‐pH values in these soils represents a serious threat to land quality, value, and productivity. Earn 1.5 CEU in Soil and Water Management by reading this article and completing the quiz at www.certifiedcropadviser.org/certifications/self‐study/702.
Long‐term corn residue grazing improves subsequent soybean yields in a corn–soybean rotation
Authors: Drewnoski Mary E. , MacDonald Jim C. , Erickson Galen E. , Klopfenstein Terry J. , Hanford Kathy J.
Published: April 2017

Although corn residue grazing can reduce feed costs, some crop producers are concerned that it will have an adverse effect on subsequent crop yields. This study was designed to evaluate the long‐term impacts of grazing corn residue in the fall or spring on soybean and corn yields when an annual corn–soybean rotation was used. Earn 1 CEU in Crop Management by reading this article and taking the quiz at www.certifiedcropadviser.org/certifications/self‐study/820.
Palmer amaranth control and grain sorghum injury with pyrasulfotole plus bromoxynil and tank mixtures
Authors: Brandon R.E. , Xue Q. , Bell J. , Bean B. , Blaser B.
Published: April 2017

Field studies were conducted in 2009 and 2010 to determine control of Palmer amaranth and grain sorghum injury resulting from a postemergence premix application of pyrasulfotole + bromoxynil and various tank‐mix partners. Earn 1.5 CEUs in Integrated Pest Management by reading this article and taking the quiz at www.certifiedcropadviser.org/certifications/self‐study/819.
A comprehensive study on adsorption behavior of some azo dyes from aqueous solution onto different adsorbents
Authors: Kaya Nihan
Published: April 2017

One of the major environmental problems is the existence of dye materials in water sources. This pollutant must be removed from water by appropriate methods. Although most of these methods are efficient for the treatment of waters contaminated with dye pollutants, they are very costly and commercially unattractive. Adsorption is one of the most popular methods for the removal of dye pollutants from water especially if the sorbent is inexpensive. Sorbents are classified as natural sorbents, commercial sorbents, and the sorbents obtained from industrial and agricultural wastes. Although commercial activated carbon is widely used in wastewater treatment applications, it is very expensive. In this study, usability of inexpensive materials – sepiolite as a natural adsorbent, and walnut shell and hazelnut shell as agricultural wastes – was investigated instead of commercial activated carbon to remove some azo dyes (methyl red, methyl orange and methyl yellow) from aqueous solution. Batch experiments were carried out to determine the effect of different adsorption parameters such as pH, initial dye concentration, contact time, adsorbent dose and temperature. The equilibrium of adsorptions was modeled using Langmuir and Freundlich isotherm models. This comprehensive study showed that these alternative adsorbents had sufficient binding capacity to remove these azo dyes from water.
Pergunta Nietzsche: o que há de poético no discurso da Filosofia? [Nietzsche asks: what's poetic in the discourse of Philosophy]
Authors: Bulhões Fernanda Machado
Published: April 2017

A Filosofia é um tipo de saber exclusivamente discursivo. Seguindo rigidamente as regras da Lógica, os argumentos e teorias vão se constituindo a partir de conceitos abstratos. Porém, afirma Nietzsche, os conceitos surgem de imagens e estas de impressões sensíveis. Por isso devemos perguntar: o que há de poético no pensar-escrever filosófico? “O que é arte na filosofia”? Devemos também voltar aos filósofos da época trágica dos gregos e aprender com eles o valor estético da Filosofia.
TOWA, Marcien. A ideia de filosofia negro-africana.
Authors: Dantas Luís Thiago Freire
Published: April 2017

A grande parte da vida intelectual do filósofo camaronês Marcien Towa consistiu em um debate acerca do trânsito da filosofia africana na discussão com a europeia, principalmente no que se refere à exposição de um diálogo equânime entre as tradições. Esse movimento impulsionado pela formação acadêmica na École Normale d’Instituteurs na França, onde defendeu uma dissertação sobre Bergson e Hegel, permitiu a esse filósofo compreender a necessidade de construir uma série de refutações àqueles acadêmicos que deslegitimavam a existência de uma filosofia africana. Por essa forma, Towa defendeu a tese de doutorado Identité et Transcendence que tinha como principal crítica as teorias de identidades que reduziriam a filosofia dos povos africanos a uma etno-filosofia, ou entenderiam a contribuição a africana somente no plano artístico e corporal, jamais no filosófico e científico.
Universidad Estatal A Distancia: simiente fecunda que la patria por ti cosechó
Authors: Corrales Mora Maricruz
Published: April 2017

El presente artículo es una remembranza alegórica de lo que significa el título de Institución Benemérita de la Educación y la Cultura Costarricense para la Universidad Estatal a Distancia, mediante un breve recorrido de momentos y datos que la autora ha querido resaltar de su historia. A diferencia de otras publicaciones en esta revista, la autora también se ha tomado la libertad de estructurar su alegoría, a partir de la metáfora de una cosecha; idea que para el ser costarricense, como pueblo con orígenes campesinos, provoca en esta Costa Rica del siglo XXI, alguna nostalgia del orgullo ancestral heredado.
Una mirada al rediseño curricular de los planes de estudios de la Escuela de Ciencias de la Educación de la Universidad Estatal a Distancia
Authors: Calvo Cruz Xinia María
Published: April 2017

Este artículo presenta los resultados de la asesoría ofrecida por el Programa de Apoyo Curricular y Evaluación de los Aprendizajes (PACE), en el año 2009, a las Comisiones de Autoevaluación (CAES) de la Escuela de Ciencias de la Educación de la Universidad Estatal a Distancia, con el fin de lograr el rediseño de los planes de estudio de los diferentes programas. Para lograr el objetivo planteado se mantuvo constante coordinación con las CAES, ofreciendo la guía curricular requerida. Para esta experiencia la asesora curricular elaboró guías de apoyo para el trabajo de cada uno de los apartados del plan de estudios. También se estableció un periodo de entrega de avances y revisiones y se mantuvo constante apoyo de la Directora de la Escuela. Cada uno de los programas concretó su nueva propuesta de plan de estudios, como parte del plan de mejoras del informe con fines de acreditación o mejoramiento continuo.
La formación para la investigación como eje curricular en la formación docente: el caso de la Carrera de Educación Preescolar de la UNED-Costa Rica
Authors: Campos Céspedes Jensy , Hidalgo Chinchilla Rosa Ma.
Published: April 2017

Este artículo presenta resultados de una evaluación curricular realizada en una carrera de Educación Preescolar; la valoración se centra en la formación para la investigación. Se determina que 62.2% de los cursos del plan de estudios analizado incluye actividades investigativas dirigidas a visitas, diseño y ejecución de actividades educativas en centros escolares. Pese a que esas actividades en la mayoría de las asignaturas son precedidas por una investigación diagnóstica (estudiantes, grupo o centros educativos) no se visualiza ese componente investigativo en las instrucciones. Así, la minoría de las asignaturas explicita que debe realizar un trabajo de investigación como parte de sus actividades académicas. En la carrera se evidencia la necesidad de determinar el tipo de actividades investigativas a realizar por los estudiantes, así como la importancia de fortalecer algunas actividades como la investigación bibliográfica, la rigurosidad en el uso de fuentes bibliográficas y la prevención del plagio en todas las asignaturas para apoyar la formación profesional del estudiante.
Evaluación de los catálogos en línea de las unidades de información especializadas en Costa Rica: una propuesta metodológica
Authors: Rodríguez Morales Zelenia
Published: April 2017

El artículo presenta los resultados de la investigación Evaluación de los catálogos en línea de las unidades de información especializadas en Costa Rica: una propuesta metodológica. El principal objetivo de esta investigación fue elaborar una propuesta de evaluación que permitiera conocer el estado del catálogo en línea, particularmente en lo relativo a la búsqueda, la web social y la interfaz gráfica, y verificar que se ajuste a los requerimientos actuales. La adaptación de una metodología de evaluación de catálogos en línea implicó el análisis de distintos sistemas evaluativos aplicados en unidades de información nacionales e internacionales de este importante servicio. La metodología adaptada se validó en los catálogos en línea del Instituto Nacional de las Mujeres (INAMU), el Instituto Interamericano de Derechos Humanos (IIDH) y la Corte Interamericana de Derechos Humanos (CIDH), todas con sede en Costa Rica, cuyas unidades de información han realizado acciones que tienden a garantizar a sus personas usuarias un catálogo en línea especializado en la temática de los derechos humanos.
Procesos de generación de conocimiento y los aspectos que operan en la interacción de actividades colaborativas virtuales en un curso en línea
Authors: Echeverri Echeverri Ana Cecilia
Published: April 2017

En este trabajo investigativo se analiza cuáles interacciones didácticas y mecanismos de apoyo docente, producidos en una situación de aprendizaje colaborativo, contribuyen a la gestión de nuevo conocimiento personal y colectivo Para ello, se realizó un análisis de dos espacios colaborativos en el curso virtual Evaluación de programas y proyectos en Educación a Distancia, que forman parte del plan de estudios de la Maestría en Educación a Distancia de la Universidad Estatal a Distancia de Costa Rica, UNED. En el análisis de las interacciones se utilizó el modelo propuesto por Garrison Anderson y Archer que permite determinar los aspectos que contribuyen a la construcción de aprendizaje significativos en un entorno de aprendizaje colaborativo.
La enseñanza del arte en el contexto social actual
Authors: Bonilla Elizondo Pablo
Published: April 2017

Este ensayo aborda brevemente algunos cambios epistemológicos sufridos en el pensamiento artístico durante el siglo XX, que fundamentan un conjunto de nuevas prácticas artísticas vinculadas directamente con la educación y el contexto social. Con ello, se confronta la consecuencia epistemológica de la Cátedra de Artes de la Escuela de Ciencias Sociales y Humanidades de la Universidad Estatal a Distancia.
Razones y consideraciones para la implementación del aprendizaje móvil en la UNED: realidades y desafíos
Authors: Brenes Matarrita Olga Ligia , Salas Campos Ileana , Valerio Alvarez Cinthya Alejandra
Published: April 2017

El propósito de esta investigación consistió en conocer el estado del arte sobre el aprendizaje móvil, así como determinar los aspectos técnicos y pedagógicos implicados en el proyecto de investigación titulado “Propuesta para la experimentación, diseño, desarrollo e implementación del aprendizaje móvil (mobile learning) UNED Costa Rica”. En esta investigación participan representantes del Programa de Informática Educativa, del Programa de Aprendizaje en Línea y Programa de Producción Electrónica Multimedial de la Universidad Estatal a Distancia. La metodología utilizada se basa en los lineamientos de Galvan (2006) para las revisiones de literatura.  Una primera etapa exploratoria permitió revisar, no solo los autores fundamentales para dar sustento a las ideas planteadas, sino también las instituciones que tenían experiencias e información que podía ser útil. Una segunda etapa de la investigación coadyuvó a la delimitación de contenidos y de referencias, para la construcción del documento principal de la investigación. Los principales resultados son contundentes, en cuanto a la urgente necesidad, que tienen las instituciones de educación superior, de implementación del aprendizaje a través de dispositivos móviles, para responder a las necesidades de la presencia de situaciones académicas en cualquier momento y en cualquier lugar. Se sugiere que futuras investigaciones partan de la evaluación de las experiencias derivadas de la implementación de recursos educativos y de gestión administrativa, accesibles desde dispositivos móviles.
Diálogo para la reflexión: compartiendo la experiencia de aula desde el Proyecto Pedagógico
Authors: Urdaneta Benavides María Margarita
Published: April 2017

El presente ensayo nace de la vivencia como profesora tutora del curso de Proyecto Pedagógico, curso que coordina la experiencia de intervención pedagógica que es parte de la formación de los estudiantes del nivel de Bachillerato de la carrera de Pedagogía con énfasis en Educación Preescolar, de la División de Educación Básica de la Universidad Nacional. El interés sobre la posibilidad de lograr mediar procesos; que permitan, a los estudiantes que vivencian la intervención pedagógica, acercarse al reconocimiento de sus estrategias reflexivas y meta-cognitivas (a partir de la socialización de los momentos de interacción en el aula preescolar en los que el profesor tutor acompaña al estudiante), ha motivado a retomar la experiencia, a través de la reflexión personal que se presenta en este ensayo. De manera que, a partir de una visualización de las vivencias desde la labor docente en el aula universitaria, se pretende ilustrar las estrategias para la reconstrucción y reflexión posterior a la acción, el futuro docente sea quien logre visualizarse a partir de su propia mirada, y, no únicamente, a través de la mirada del profesor tutor.
Propuesta de coordinación de servicios de orientación educativa: fortaleciendo la calidad en educación a distancia
Authors: Arguedas Ramírez Ligia
Published: April 2017

En este artículo se plantean aspectos generales que fundamentan el propósito del Programa de Orientación y Atención Psicoeducativa –POAP–, su gestión de apoyo y servicios de orientación educativa a las estudiantes y los estudiantes de la Universidad Estatal a Distancia y; marco de referencia a la propuesta de coordinación formal e institucionalizada con la academia: escuelas, programas de estudio y cátedras. Una propuesta, cuyo propósito es colaborar y favorecer de manera sistémica y transversal a un quehacer académico con calidad en el sistema de educación superior a distancia. Se propone concretar la coordinación en procura de potenciar y fortalecer el acompañamiento académico, personal, social, vocacional y ocupacional de la población estudiantil; mediante un impacto positivo en su rendimiento académico y la conclusión exitosa y en tiempos oportunos de su proyecto de estudio en la Universidad, como indicadores de calidad institucional.
A AUTOSCOPIA BIFÁSICA INTEGRADA AO MICROENSINO: UMA ESTRATÉGIA DE INTERVENÇÃO REFLEXIVA NA FORMAÇÃO DE PROFESSORES DE QUÍMICA
Authors: Arrigo Viviane , Lorencini Júnior Álvaro , Broietti Fabiele Cristiane Dias
Published: April 2017

A presente pesquisa tem como foco de estudo a formação inicial reflexiva de uma estudante de um curso de licenciatura em Química, durante as atividades de microensino, desenvolvidas na disciplina de Estágio Supervisionado. Para a implementação da investigação integramos as fases do microensino às fases da autoscopia, propondo a autoscopia bifásica, desenvolvida em duas fases: a interativa e a pós-ativa, como procedimento realizado para a coleta de dados e intervenção reflexiva com a estudante. Nesse contexto, o objetivo da investigação consistiu em caracterizar como a estudante dá sentidos às suas reflexões e de que modo essas reflexões podem interferir na construção do seu perfil docente. Os resultados obtidos são decorrentes da análise, interpretação e sistematização dos dados, por meio dos “momentos” reflexivos descritos por Schön, a partir dos conteúdos das reflexões da estudante de licenciatura, que denominamos de Liz. Mediante a análise das reflexões, identificamos quatro “momentos” de alerta na prática reflexiva de Liz, porém, constatamos que o alerta 1, referente a dificuldade encontrada na abordagem do conteúdo foi responsável pela ocorrência dos demais alertas ao longo do seu microensino. Deste modo, depreendemos que o alerta 1 pode ser caracterizado como um elemento surpresa que não foi enquadrado nos moldes do que Liz aprendeu a tratar como uma prática “convencional”, e por isso foi necessário estabelecer um diálogo reflexivo com a situação educativa para configurar tal problema por meio de uma resposta que não fosse rotineira e espontânea. Nessa situação, ao reestruturar as suas estratégias de ação, Liz reconheceu os problemas decorrentes da sua prática de ensino, provenientes da dificuldade em como abordar o conteúdo. Mediante as análises realizadas reconhecemos as potencialidades da integração entre o microensino e a autoscopia como uma forma de possibilitar momentos reflexivos relacionados à prática de ensino na formação de futuros professores.
Arsenate and arsenite adsorption in relation with chemical properties of alluvial and loess soils
Authors: Rukh Shah , Akhtar Saleem , Mehmood Ayaz , Hassan Sayed , Khan Khalid , Naqvi Syed , Imran Muhammad
Published: April 2017

Arsenic is one of the most toxic elements in the soil environment. Understanding of the arsenic adsorption chemistry is essential for evolving the extent of soil and groundwater contaminations. This research was conducted to determine the variation in adsorption behaviour of arsenite and arsenate with depth in different lithology soils. We sampled two parent materials at genetic horizons, and within a parent material, we selected two soils. Besides basic soil characterizations, a laboratory batch experiments were carried out to study the adsorption of arsenate and arsenite. Freundlich adsorption approaches were employed to investigate the adsorption of arsenate and arsenite in the soils. Freundlich isotherms fit arsenate and arsenite sorption data well with r2 values of 0.88?0.98 in most soils. Arsenate and arsenite adsorption varied with the soil properties, especially in clay composition and in the oxides of iron and aluminum. Arsenic adsorption parameters also varied with depth in parent materials, and loess derived soils had greater adsorption capacity as compared to alluvial soils in most of the adsorption parameters. This research concludes that the loess soils had higher arsenic adsorption capacity than the alluvial soils.
Standard and molecular methods in the diagnostics of infections caused by equine herpesviruses 1 and 4
Authors: Milic Nenad , Radalj Andrea , Nisavic Jakov
Published: April 2017

Background. Equine herpesvirus type 1 (EHV-1) is responsible for respiratory disease in young animals, abortion in pregnant mares and neurological disease, whilst equine herpesvirus 4 (EHV-4) is mainly the causative agent of respiratory disorders and rarely causes abortion. These viruses are considered as one of the most clinically and economically important pathogens of horses and can be detected in a range of tissues. Scope and Approach. Serological methods are used to detect the presence and titre of specific antibodies to EHV-1 and EHV-4 in the sera of examined horses and are useful in epizootiological studies. Commercially available ELISA kits are able to differentiate specific EHV-1 and EHV-4 antibodies. EHV-1 and EHV-4 can both be isolated using susceptible cells such as primary horse cell cultures and other non-equine cells with visible cytopathic effect. Since standard diagnostic methods can be time consuming and arduous, the scope of many studies has been to develop and confirm the sensitivity and specificity of molecular diagnostic methods. Key Findings and Conclusions. Polymerase chain reaction (PCR) has proved to be a good screening method for the presence of latent infections of horses caused by these viruses, also making possible the rapid identification and differentiation of EHV-1 and- EHV-4 in the examined samples. Real-time PCR is a sensitive, specific and quantitative method that enables the determination of viral kinetics in infected horses. Genome sequencing can be used to discover mutations in the genomes of EHV-1 and EHV-4 as well as to track the spread of their different strains globally.
Childcare Teachers' Attitudes toward the Integration of Care and Education in Korea
Authors: Park Soyeon , Yang Sungeun , Sims Margaret
Published: April 2017

THIS STUDY EXPLORES KOREAN childcare teachers' attitudes toward the integration of care and education and the primary issues related to such integration. Ninety-three childcare teachers (91 females and two males) residing in the Seoul metropolitan areas of South Korea participated in this study. Most teachers in this study believed that combining care and education would enhance the professionalisation of the early care and education field and enable better services for children. The teachers expected the following fundamental elements from the integration: heightened criteria for teacher certifications; better work conditions for teachers; age-specific standardised curricula; and improvements to the quality of facilities because of consolidated administration and management. However, the teachers were concerned with possible challenges in the childcare field after integration and its impact on childcare teachers' job opportunities. The teachers' perspectives voiced in this study offer timely data that may facilitate the development of specific guidelines and directives for the integration of care and education. Implications from this study may also contribute valuable information to other countries experiencing similar challenges in combining early education and care.
Play: Challenging Educators' Beliefs about Play in the Indoor and Outdoor Environment
Authors: Leggett Nicole , Newman Linda
Published: April 2017

WESTERN DISCOURSES OF EARLY childhood pedagogy promote a play-based approach to learning, growth and development. However, play is a contested concept. Educators' understandings can vary from allowing freedom for children to play without interference, through to a range of adult engagement levels. The Australian Early Years Learning Framework adopts a play-based approach to children's growth and development, though says little about adult roles or intentionality in play. This paper draws from recent research that explored educators' beliefs and understandings of their roles as intentional teachers within indoor and outdoor learning environments. Findings highlighted differences between role and responsibility perceptions whereby educators shifted roles from teacher to supervisor between contexts. Drawing on Vygotsky's sociocultural approach that regards play as a social event and the leading source of development, promoting cognitive, emotional and social development in young children (Connery, John-Steiner & Marjanovic-Shane, 2010), we believe that a re-examination of the role of the educator in children's play requires specific attention. Finally, based on the research, we contest the notion of ‘free play’. This paper suggests that by acknowledging the role of the educator as an intentional teacher both indoors and outdoors, and emphasising the complexity of the educator role, a more robust definition of play that is reflective of contemporary early childhood contexts and curricula can evolve to strengthen educator understanding and practice.
Including Playful Aggression in Early Childhood Curriculum and Pedagogy
Authors: Hart Jennifer L. , Nagel Michael C.
Published: April 2017

THE APPROPRIATENESS OF YOUNG children's playful aggression within early childhood settings continues to be debated among early childhood professionals. Research suggests that children's play—all types of play—should be the foundation of early childhood practice; however, playful aggression continues to be a neglected aspect of early childhood curricula. While decades of research identify the significant developmental benefits within multiple domains of learning as derived from various aspects of play, strict policies prohibiting playful aggression remain. With a growing number of young children enrolled in preschool programs it is important for educators to provide beneficial and inclusive experiences conducive to fostering optimal development of young children in all learning domains. This article suggests that the intolerance of children's playful aggression may reduce their optimal development; more specifically, their cognitive, social, physical and communicative development may be limited or hindered due to the omission and/or exclusion of playfully aggressive opportunities.