bluuebunny/crossref_metadata_2025 huggingface dataset:
The Rheology and Physical Properties of Fermented Probiotic Ice Creams Made with Dairy Alternatives
Authors: Aboulfazli Fatemeh , Baba Ahmad Salihin , Misran Misni
Published: June 2015

In this study, cow (W)’s milk was replaced by soy (S), coconut (C) and various combinations of coconut or cow milks with soy milk in order to produce fermented probiotic ice cream. The changes in ice cream eating qualities and physical properties were evaluated. Fermented ice cream containing vegetable milks showed a slower melting rate and higher apparent viscosity and particle size and also lower total acceptability than fermented cow milk ice cream (control). Ice creams containing Lactobacillus acidophilus (La-05; L) showed a lower melting rate and higher apparent viscosity and particle size than ice creams containing Bifidobacterium bifidum (Bb-12; B). Regardless of the starter culture used, all of sensory analysis scores decreased in ice creams with higher soy milk amount. The vegetable milks may offer ice cream manufacturers an alternative source of cow milk as a functional ice cream.
Economic Growth and Environmental Quality in the European Union Countries – Is there Evidence for the Environmental Kuznets Curve?
Authors: Mazur Anna , Phutkaradze Zaur , Phutkaradze Jaba
Published: June 2015

This research empirically explores the relation between carbon dioxide emission and economic growth during the period 1992-2010, using panel data on the European Union countries. Both fixed and random effect models are employed to test the Environmental Kuznets Curve (EKC) relationship between CO2 emissions and GDP per capita. While no U-shaped EKC was confirmed empirically for all 28 current EU member states, the graphical analysis demonstrates a justified turning point for CO2 emissions as GDP per capita reaches the level of 23,000 USD. Furthermore, there is a firm empirical ground for the EKC hypothesis based on data from 16 older, relatively high-income EU states. Thus, though not empirically confirmed, there is ample data verifying the existence of the EKC in EU economies.
Investor Reaction to Information on Final Dividend Payouts on the Warsaw Stock Exchange – an Event Study Analysis
Authors: Szomko Natalia
Published: June 2015

This article analyzes the investor reaction to information on the final value of dividend payouts for companies listed on the Warsaw Stock Exchange, using the event study methodology. Our research shows that investor reaction is positive for irregular payouts and both the initiation of and the increase in payouts, while negative for the resumption and of and decreases in payouts. The magnitude of the reaction is also higher for the initiation of payouts than either the increases in, or irregular payouts.

This study contributes to the literature on dividend policy by presenting results for the emerging economy of Poland. Moreover, it pays particular attention to statistical issues related to the event study methodology, i.e., the verification of assumptions behind the method of returns model estimation. It also compares investor reaction to dividend changes assessed on the basis of different measures, and underlines the dependence of the results on the choice of the parameters assumed (e.g., event window length).
Numerical Simulation of Unstable Stratified Turbulent Flow in Open Channels
Authors: Zhumagulov Bakhytzhan , Issakhov Alibek , Khikmetov Askar
Published: June 2015

This paper considers the unstable stratified turbulent flow in an open channel. A mathematical model of unstable stratified turbulent flow is introduced, which allows to assess the mean and fluctuation characteristics of the turbulent flow. The numerical algorithm is developed for solving this problem. A numerical method is based on the projection method, which divides the problem into three stages. At the first stage, it is assumed that the transfer of momentum occurs only by convection and diffusion. Intermediate velocity field is solved by fractional steps method. At the second stage, three-dimensional Poisson equation is solved by the Fourier method in combination with tridiagonal matrix method (Thomas algorithm). Finally, at the third stage, it is expected that the transfer is only due to the pressure gradient. The simulation results are in satisfactory agreement with the experimental data.
New fractional calculus results involving Srivastava’s general class of multivariable polynomials and The H̅ - function
Authors: Chaurasia V. B. L. , Gill Vinod
Published: June 2015

A significantly large number of earlier works on the subjects of fractional calculus give interesting account of the theory and applications of fractional calculus operators in many different areas of mathematical analysis. In the present paper, we study and develop an important result involving a fractional differential operator for the product of general multivariable polynomials, general polynomial set and two -functions. The result discussed here can be used to investigate a wide class of new and known results, hitherto scattered in the literature. For the sake of illustration, six interesting special case have also been recorded here of our main findings.
A Class of Modified Ratio Estimators for Estimation of Population Variance
Authors: Subramani J. , Kumarapandiyan G.
Published: June 2015

In this paper we have proposed a class of modified ratio type variance estimators for estimation of population variance of the study variable using the known parameters of the auxiliary variable. The bias and mean squared error of the proposed estimators are obtained and also derived the conditions for which the proposed estimators perform better than the traditional ratio type variance estimator and existing modified ratio type variance estimators. Further we have compared the proposed estimators with that of the traditional ratio type variance estimator and existing modified ratio type variance estimators for certain natural populations.
Integral identity for a class of ill-posed problems generated by a parabolic equation
Authors: Vavilov Sergey A. , Svetlov Kirill V.
Published: June 2015

The goal of the present study is to derive an integral identity for a class of ill-posed problems generated by a parabolic equation. The obtained result enables us to reduce the original ill-posed problem directly to the first-kind Fredholm equation with translation kernel. Various real world applications to a different fields of knowledge, including ecology and finances, are presented.
The variational formulation of an inverse problem for
multidimensional nonlinear time-dependent Schrödinger equation
Authors: Aksoy Nigar Yıldırım
Published: June 2015

In this paper, an inverse problem of determining the unknown coefficient of a
multidimensional nonlinear time-dependent Schrödinger equation that has
a complex number at nonlinear part is considered. The inverse problem is
reformulated as a variational one which aims to minimize the observation
functional. This paper presents existence and uniqueness theorems of
solutions of the constituted variational problem, the gradient of the
observation functional and a necessary condition for the solution of the
variational problem.
Optimisation of Lilla Edet Landslide GPS Monitoring Network
Authors: Alizadeh-Khameneh M. A. , Eshagh M. , Sjöberg L. E.
Published: June 2015

Since the year 2000, some periodic investigations
have been performed in the Lilla Edet region to monitor
and possibly determine the landslide of the area with
GPS measurements. The responsible consultant has conducted
this project by setting up some stable stations for
GPS receivers in the risky areas of Lilla Edet and measured
the independent baselines amongst the stations according
to their observation plan. Here, we optimise the existing
surveying network and determine the optimal configuration
of the observation plan based on different criteria.We
aim to optimise the current network to become sensitive
to detect 5 mm possible displacements in each net point.
The network quality criteria of precision, reliability and
cost are used as object functions to perform single-, bi- and
multi-objective optimisation models. It has been shown
in the results that the single-objective model of reliability,
which is constrained to the precision, provides much
higher precision than the defined criterion by preserving
almost all of the observations. However, in this study, the
multi-objective model can fulfil all the mentioned quality
criteria of the network by 17% less measurements than
the original observation plan, meaning 17%of saving time,
cost and effort in the project.
Increased Monoclonal Components: Prevalence in an Italian Population of 44 474 Outpatients Detected by Capillary Electrophoresis/ Povišene monoklonske komponente: prevalencija u skupini 44.474 italijanskih nehospitalizovanih ispitanika detektovana kapilarnom elektroforezom
Authors: Vernocchi Arialdo , Longhi Ermanno , Lippi Giuseppe , Gelsumini Silvia
Published: June 2015

Background: Identification, quantification and typing of MProteins (MP) play an important role in the diagnosis, classification and monitoring of monoclonal gammopathies both of malignant origin (eg. Multiple Myeloma) and of unknown origin. Previous evidence attests that MGUS (Monoclonal Gammopathy of Undetermined Significance) detected by agarose gel electrophoresis has a prevalence of 3.2% in the general population. Therefore, our study aimed to verify this data by means of capillary zone electrophoresis (CZE).

Methods: CZE was performed to evaluate the prevalence of M-Protein (MP) in 44.474 consecutive outpatients of all ages with a prescription for serum protein electrophoresis over a 2-year period (2008 and 2009). All MPs that were identified were then typed by immunofixation electro pho - resis on agarose gel (IFE).

Results: In subjects aged over 50 (23.408, i.e., 52.6% of the whole cohort) MP ≤30 g/L (MGUS) was identified in 6.0% of cases, with a frequency nearly double than that previously reported. The population was then divided into ten-year age groups: the 71-80 age group had the highest percentage of MP (29%), followed by 61-70 (27%), 51-60 (18%), 81-90 (12%), 41-50 (8%), 31-40 (3%), >90 (2%) and <30 (1%). The frequency of MP types (IFE) was the same in each age group, with IgG Kappa being the most represented class.

Conclusions: According to the high MGUS prevalence observed in this study, these results may be useful especially for general practitioners, because the identification even of small MP (analytical sensitivity: 0.5 g/L) may help optimize clinical management.
Population size, dynamics and reproduction success of the lesser spotted eagle (Aquila pomarina) in Latvia
Authors: Bergmanis Uģis , Auniņš Ainārs , Petriņš Aivars , Cīrulis Valdis , Granāts Jānis , Opermanis Otars , Soms Andris
Published: June 2015

We analysed the population size, population dynamics and reproduction success of the lesser spotted eagle in Latvia from 1988 to 2014. While the overall population did not show a statistically significant trend during any of the periods analysed (long, medium and short term), the populations in the individual study areas changed differently: of five research plots, populations were stable in two, increased in one, and decreased in two research plots. Using the existing research plots as samples of breeding numbers in areas of different breeding density classes based on forest management units, the total breeding population in Latvia was estimated. The overall number of breeding pairs in 2012-2014 was between 3700-4000. During the period 1988-2014, 65.62% of all pairs recorded as present on their home range, made a breeding attempt and laid eggs. The reproductive success ratio was 0.49 young per occupied territory with an adult pair of birds and 0.74 young per breeding pair which laid eggs. Overall, during the 21 -year research period there was a stable long-term trend in reproductive success (young per pair present on home range). Rarely, indeed only in 1 .89% of all cases did two young fledge. The total number of young (young per 100 km2) shows stable long-, medium- and short-term trends with an average value of 5.1 young per 100 km2.
Monitoring of spotted eagles in Estonia in 1994–2014: Stability of the lesser spotted eagle (Aquila pomarina) and decline of the greater spotted eagle (A. clanga)
Authors: Väli Ülo
Published: June 2015

Population trends of the lesser and greater spotted eagle in Estonia were comparatively estimated using data obtained in 1994-2014 from the monitoring scheme of common raptors and from special plots for monitoring of spotted eagles. Both approaches had pros and cons, but resulted in similar population trends. The numbers of the lesser spotted eagle have had minor fluctuations over the last two decades but the overall trend is stable; the current population size is estimated as 600-700 pairs. The number of greater spotted eagle breeding territories (pure-species and mixed pairs pooled) have significantly decreased, for example by 14% per year in 2004-2010, though in recent years the numbers seem to be stabilised at a critically low level. The decline of pure-species pairs was somewhat steeper than that ofmixed pairs, their proportion decreasing from a third to a quarter of the greater spotted eagle breeding territories. Altogether 5-10 breeding territories of the greater spotted eagle may be found nowadays in Estonia.
On eastern imperial eagle (Aquila heliaca) breeding in atypical habitat under competitive conditions with other eagle species
Authors: Bekmansurov Rinur H. , Karyakin Igor V. , Shnayder Elena P.
Published: June 2015

In the paper we describe two cases of eastern imperial eagle breeding in the former nests of greater spotted eagle and white-tailed eagle observed in the Tatarstan Republic, Russia. In both cases, eastern imperial eagles occupied non-favourable habitats they never used before - a vast alder forest in the wetlands and an island in a reservoir. The possible reasons that made the eagles expand their breeding ranges in the Volga region ofRussia are discussed in this paper
Reproductive success, selected nest characteristics and the effectiveness of establishing
protection zones of the lesser spotted eagle (Aquila pomarina)
population in Slovakia
Authors: Dravecký Miroslav , Maderič Boris , Kicko Ján , Danko Štefan , Karaska Dušan , Mihók Jozef , Guziová Zuzana
Published: June 2015

In 2011–201 4 monitoring of the lesser spotted eagle (Aquila pomarina) breeding population was conducted in eight
special protection areas in Slovakia. From a total of 272 successful breeding attempts by 1 49 breeding pairs during 4 breeding
seasons 277 young birds were fledged. The average reproductive success ratio was thus 0.51 juv./pair present, 0.69 juv./breeding
pair and 1 .37 juv./1 00 km2. In the surveyed period a total of 1 51 protection zones were established around the nests in 11 9 breeding
territories, which provided protection for 1 7% of the breeding population of the lesser spotted eagle in Slovakia. By testing
the effectiveness of protection zones it was determined that in nests with an established protection zone the probability of successful
raising of young is higher in comparison with nests without such a zone. The probability that breeding will be successful in the
nests of breeding pairs without a protection zone was 48.1% (95% confidence intervals (CIs): 37.4–59.0%), and in nests with
a protection zone 64.8% (95% CIs: 59.8–69.6%). Among the five most frequent nest tree species used by A. pomarina in Slovakia
for breeding are Picea abies 61 × (28.4%), Pinus sylvestris 45× (20.9%), Quercus sp. 36× (1 6.7%), Fagus sylvatica 25× (11 .6%)
and Abies alba 1 8× (8.4%). Among the rarer nest tree species used are Larix decidua 1 2× (5.6%) and Alnus glutinosa 3× (1 .4%),
while a further 11 species of nest trees did not achieve even 1%. The highest number of nest trees (n = 21 5), i.e. 34 nests (1 5.8%),
was found in the altitude range of 401–450 m a.s.l. and 29 nests (1 3.5%) at 351–400 m a.s.l. Other altitude zones were all below
the 1 0% mark. A total of 54% of nests found (11 6 nests) are located in the altitude zone of 301–600 m a.s.l., and 71 nests (33%)
in the zone 600–900 m a.s.l. The lowest situated nest was at an altitude of 1 50 m and the highest at 950 m; the average was
595.01 m a.s.l. The highest number of nests (n = 209) were located on trees in a range 1 5.1–20.0 m above the ground (n = 92,
44%), while the lowest nest found was at a height of 5 m and the highest at 30 m above the ground.
Experimental Investigation on the Ignition Delay Time of Plasma-Assisted Ignition
Authors: Xiao Yang , Yu Jin-Lu , He Li-Ming , Jiang Yong-Jian , Wu Yong
Published: June 2015

This paper investigates the ignition performances of plasma-assisted ignition in propane/air mixture. The results show that a shorter ignition delay time is obtained for the plasma ignition than the spark ignition and the average ignition delay time of plasma-assisted ignition can be reduced at least by 50%. The influence of air flow rate of combustor, the arc current and argon flow rate of plasma igniter on ignition delay time are also investigated. The ignition delay time of plasma-assisted ignition increases with increasing air flow rate in the combustor. By increasing the arc current, the plasma ignition will gain more ignition energy to ignite the mixture more easily. The influence of plasma ignition argon flow rates on the ignition delay time is quite minor.
From Dyadic Ties to Information Infrastructures: Care-Coordination between Patients, Providers, Students and Researchers
Authors: Purkayastha S. , Biswas R. , Jai Ganesh A.U. , Price A. , Otero P.
Published: June 2015

Objective: To share how an effectual merging of local and online networks in low resource regions can supplement and strengthen the local practice of patient centered care through the use of an online digital infrastructure powered by all stakeholders in healthcare. User Driven Health Care offers the dynamic integration of patient values and evidence based solutions for improved medical communication in medical care.

Introduction: This paper conceptualizes patient care-coordination through the lens of engaged stakeholders using digital infrastructures tools to integrate information technology. We distinguish this lens from the prevalent conceptualization of dyadic ties between clinician-patient, patient-nurse, clinician-nurse, and offer the holistic integration of all stakeholder inputs, in the clinic and augmented by online communication in a multi-national setting.

Methods: We analyze an instance of the user-driven health care (UDHC), a network of providers, patients, students and researchers working together to help manage patient care. The network currently focuses on patients from LMICs, but the provider network is global in reach. We describe UDHC and its opportunities and challenges in care-coordination to reduce costs, bring equity, and improve care quality and share evidence.

Conclusion: UDHC has resulted in coordinated global based local care, affecting multiple facets of medical practice. Shared information resources between providers with disparate knowledge, results in better understanding by patients, unique and challenging cases for students, innovative community based research and discovery learning for all.
Does Informatics Enable or Inhibit the Delivery of Patient-centred, Coordinated, and Quality-assured Care: a Delphi Study
Authors: Liyanage H. , Correa S-T. , Kuziemsky C. , Terry A. L. , de Lusignan S.
Published: June 2015

Background: Primary care delivers patient-centred and coordinated care, which should be quality-assured. Much of family practice now routinely uses computerised medical record (CMR) systems, these systems being linked at varying levels to laboratories and other care providers. CMR systems have the potential to support care.

Objective: To achieve a consensus among an international panel of health care professionals and informatics experts about the role of informatics in the delivery of patient-centred, coordinated, and quality-assured care.

Method: The consensus building exercise involved 20 individuals, five general practitioners and 15 informatics academics, members of the International Medical Informatics Association Primary Care Informatics Working Group. A thematic analysis of the literature was carried out according to the defined themes. Results:The first round of the analysis developed 27 statements on how the CMR, or any other information system, including paper-based medical records, supports care delivery. Round 2 aimed at achieving a consensus about the statements of round one. Round 3 stated that there was an agreement on informatics principles and structures that should be put in place. However, there was a disagreement about the processes involved in the implementation, and about the clinical interaction with the systems after the implementation.

Conclusions: The panel had a strong agreement about the core concepts and structures that should be put in place to support high quality care. However, this agreement evaporated over statements related to implementation. These findings reflect literature and personal experiences: whilst there is consensus about how informatics structures and processes support good quality care, implementation is difficult.
A case of severe anorexia, excessive weight loss and high peptide YY levels after sleeve gastrectomy
Authors: Pucci Andrea , Cheung Wui Hang , Jones Jenny , Manning Sean , Kingett Helen , Adamo Marco , Elkalaawy Mohamed , Jenkinson Andrew , Finer Nicholas , Doyle Jacqueline , Hashemi Majid , Batterham Rachel L
Published: June 2015

Sleeve gastrectomy (SG) is the second most commonly performed bariatric procedure worldwide. Altered circulating gut hormones have been suggested to contribute post-operatively to appetite suppression, decreased caloric intake and weight reduction. In the present study, we report a 22-year-old woman who underwent laparoscopic SG for obesity (BMI 46 kg/m2). Post-operatively, she reported marked appetite reduction, which resulted in excessive weight loss (1-year post-SG: BMI 22 kg/m2, weight loss 52%, >99th centile of 1-year percentage of weight loss from 453 SG patients). Gastrointestinal (GI) imaging, GI physiology/motility studies and endoscopy revealed no anatomical cause for her symptoms, and psychological assessments excluded an eating disorder. Despite nutritional supplements and anti-emetics, her weight loss continued (BMI 19 kg/m2), and she required nasogastric feeding. A random gut hormone assessment revealed high plasma peptide YY (PYY) levels. She underwent a 3 h meal study following an overnight fast to assess her subjective appetite and circulating gut hormone levels. Her fasted nausea scores were high, with low hunger, and these worsened with nutrient ingestion. Compared to ten other post-SG female patients, her fasted circulating PYY and nutrient-stimulated PYY and active glucagon-like peptide 1 (GLP1) levels were markedly elevated. Octreotide treatment was associated with suppressed circulating PYY and GLP1 levels, increased appetite, increased caloric intake and weight gain (BMI 22 kg/m2 after 6 months). The present case highlights the value of measuring gut hormones in patients following bariatric surgery who present with anorexia and excessive weight loss and suggests that octreotide treatment can produce symptomatic relief and weight regain in this setting.

Learning points

Roux-en-Y gastric bypass and SG produce marked sustained weight reduction. However, there is a marked individual variability in this reduction, and post-operative weight loss follows a normal distribution with extremes of ‘good’ and ‘poor’ response.

Profound anorexia and excessive weight loss post-SG may be associated with markedly elevated circulating fasted PYY and post-meal PYY and GLP1 levels.

Octreotide treatment can produce symptomatic relief and weight regain for post-SG patients that have an extreme anorectic and weight loss response.

The present case highlights the value of measuring circulating gut hormone levels in patients with post-operative anorexia and extreme weight loss.
Effects of Physician-Based Preventive Oral Health Services on Dental Caries
Authors: Kranz Ashley M. , Preisser John S. , Rozier R. Gary
Published: June 2015

BACKGROUND:

Most Medicaid programs reimburse nondental providers for preventive dental services. We estimate the impact of comprehensive preventive oral health services (POHS) on dental caries among kindergarten students, hypothesizing improved oral health among students with medical visits with POHS.

METHODS:

We conducted a retrospective study in 29 173 kindergarten students by linking Medicaid claims (1999–2006) with public health surveillance data (2005–2006). Zero-inflated regression models estimated the association between number of visits with POHS and (1) decayed, missing, and filled primary teeth (dmft) and (2) untreated decayed teeth while adjusting for confounding.

RESULTS:

Kindergarten students with ≥4 POHS visits averaged an adjusted 1.82 dmft (95% confidence interval: 1.55 to 2.09), which was significantly less than students with 0 visits (2.21 dmft; 95% confidence interval: 2.16 to 2.25). The mean number of untreated decayed teeth was not reduced for students with ≥4 POHS visits compared with those with 0 visits.

CONCLUSIONS:

POHS provided by nondental providers in medical settings were associated with a reduction in caries experience in young children but were not associated with improvement in subsequent use of treatment services in dental settings. Efforts to promote oral health in medical settings should continue. Strategies to promote physician-dentist collaborations are needed to improve continuity of care for children receiving dental services in medical settings.
Agua y abastecimiento: gestión de cuerpos de agua en la ciudad de San Luis Potosí (México), 1831-1887
Authors: Hernández Fuentes Yuritzi , Betancourt Mendieta Alexander
Published: June 2015

Este trabajo plantea una aproximación sobre la gestión de cuerpos de agua y de los sistemas hidráulicos en la ciudad de San Luis Potosí (México), durante el período 1831-1887, a partir de las medidas que tomó el gobierno municipal para atender las necesidades de abastecimiento de agua. El texto analiza dos proyectos importantes en el manejo del agua: el acueducto La Cañada del Lobo y las acciones sobre las derivaciones de aguas a través de La Corriente. Los dos proyectos enfrentaron diversos problemas, entre ellos, el brote de enfermedades asociadas a los cuerpos de agua y la escasez del flujo de líquido a través del acueducto de La Cañada del Lobo.
Monotonía, aislamiento y atraso agrícola descripciones de viajeros del siglo XIX e historia agraria de la Sabana de Bogotá (Colombia)
Authors: Mora Pacheco Katherinne Giselle
Published: June 2015

Diferentes obras de Historia Agraria reproducen una descripción similar de la Sabana de Bogotá (Colombia) durante el siglo XIX: vocación agrícola desde la Colonia; extensos campos cubiertos de trigo y cebada; reemplazo abrupto de cultivos por ganadería; crisis de la agricultura vinculada con las bonanzas agroexportadoras y la demanda de productos tropicales que no podían obtenerse en altitudes superiores a 2000 metros. Este artículo analiza cómo esta perspectiva ha perpetuado las descripciones de viajeros que visitaron la región durante el siglo XIX, basadas en sus orígenes, objetivos, intereses políticos y económicos, o en las afirmaciones de sus guías e informantes. Reconstruye un perfil de los viajeros que son citados con mayor frecuencia por los historiadores, sus apreciaciones sobre el paisaje sabanero y la actividad agrícola y ganadera y su influencia en las reconstrucciones que en la actualidad se hacen de la historia agraria de la Sabana de Bogotá durante el siglo XIX. Invita a contrastar los relatos de viajeros entre sí y con otras fuentes e incorporar en los análisis los resultados de investigaciones sobre el periodo colonial y las condiciones biofísicas de las regiones objeto de estudio.
Presentación
Authors: Acevedo Carmona Darío
Published: June 2015

Se presenta brevemente el número 29 de la revista Historia y Sociedad
La enseñanza racional y sistemática en Colombia: el caso de la aritmética en la obra escolar de G.M. Bruño (1900-1930)
Authors: Romero Loaiza Fernando , Alzate Piedrahita María Victoria , Gómez Mendoza Miguel Ángel
Published: June 2015

La llegada a Colombia de la orden de los Hermanos de las Escuelas Cristianas de La Salle, en el marco del proceso de modernización de la educación, se da en el contexto de la hegemonía conservadora y la influencia de la iglesia católica en la educación, lo que tiene condiciona significativamente la formación escolar en diversas disciplinas científicas: gramática, matemáticas, cálculo, geometría, biología, zoología. La enseñanza de la aritmética como disciplina, en el caso de la pedagogía lasaliana, permite ilustrar la pedagogía “sistemática” y “racional” caracterizada por su fundamento metódico. Para demostrar los aspectos enunciados se escogió un corpus de dieciocho libros de aritmética de ediciones G.M. Bruño publicados en el período 1900-1930, los cuales fueron sometidos a un análisis de contenido. 
De la history a la herstory: un debate inconcluso
Authors: Navarro Antolinez Leidy Carolina
Published: June 2015

En este ensayo se reflexiona sobre la relación género, mujeres e historia. Para ello, en primer lugar, consideramos la manera en que la historia social interpretó al movimiento feminista y la teoría de género. En la segunda parte caracterizamos lo que se dio a conocer como historia de las mujeres, historia feminista e historia de género, aunque –como veremos– los límites de estas categorías son difusos. En la última parte establecemos un diálogo entre dos de las más notables representantes de este debate: Joan Scott y Simone de Beauvoir, sobre sus respectivas maneras de abordar la historia de las mujeres y del género, y sobre las ideas de método de las que cada una hace uso.
¿Progreso, disciplina y masculinidad? Un caso de sodomía en la Universidad Nacional de los Estados Unidos de Colombia (1880)
Authors: Torres Cendales Leidy Jazmín
Published: June 2015

Este artículo estudia un presunto acto de sodomía cometido en las instalaciones de la Universidad Nacional de los Estados Unidos de Colombia por dos alumnos quienes cursaban estudios de filosofía y letras en 1880. A partir del análisis del régimen disciplinar de la Universidad, las posibles significaciones de los contactos sexuales entre hombres a finales del siglo XIX y las relaciones de poder evidentes en el sumario, pretendo enunciar cómo este caso desestabilizó y reafirmó, al mismo tiempo, el régimen de control y normalización corporal y conductual en la institución, al representar un punto de escape de la dura vigilancia hacia los alumnos y simultáneamente, la reproducción entre ellos mismos de esas formas de regulación y reglas de comportamiento.
Modernismo vernáculo e imaginación melodramática en Bajo el cielo antioqueño
Authors: Villegas Álvaro Andrés
Published: June 2015

Este artículo se ocupa de la película Bajo el cielo antioqueño, dirigida por Arturo Acevedo Vallarino y estrenada en 1925. En primer lugar, se describen los esfuerzos colectivos de los sectores privilegiados de la ciudad de Medellín, que participaron como inversionistas y como actores. Luego se interpreta la apropiación que hace la película de lo que se podría denominar modernismo vernáculo a través de la matriz cultural del melodrama, matriz caracterizada por la intensidad y esquematización de  los sentimientos, por el desenvolvimiento de la historia desde el desconocimiento hasta el reconocimiento, por la primacía de las relaciones familiares y de las fidelidades primordiales, y por la expresión del exceso emocional. Finalmente, se comentará su recepción, que estuvo marcada por el beneplácito ante la representación regional que esta película materializaba.
Antonio Annino, Silencios y disputas en la historia de Hispanoamérica (Bogotá: Universidad Externado de Colombia, Taurus Editores, 2014), 456pp.
Authors: Silva Renán
Published: June 2015

Reseña de Antonio Annino, Silencios y disputas en la historia de Hispanoamérica (Bogotá: Universidad Externado de Colombia, Taurus Editores, 2014), 456pp.
Energy Transfer in a Blend of PbS QDs of Different Size
Authors: Litvin Aleksandr , Parfenov Peter , Ushakova Elena , Fedorov Anatoly , Baranov Alexander
Published: June 2015

A photoexcitation energy transfer process in blends of PbS QDs of different size is considered. An analysis of photoluminescence kinetics shows drastic increase of acceptor decay times. In a triple blend a merger of photoluminescence decay curves recorded at different spectral regions is found. Different pathways of the energy transfer, including the transfer from the in-gap state, are considered.
MEMS Energy Harvesting from Low-frequency and Low-g Vibrations
Authors: Xu Ruize , Kim Sang-Gook
Published: June 2015

MEMS vibration energy harvesting has been investigated to provide energy to low-power micro-electronic systems and potentially to enable batteryless autonomous systems. While enjoying the small footprint hence the ability to be embedded in other systems, MEMS vibration energy harvesters are working at much higher frequencies and input vibration amplitudes. The mechanical resonator based energy harvesters seem inherently have such high frequency due to the scaling of the device dimension. Lower the working frequency range and input vibration amplitude are possible by optimizing the dimensions of the device. However, we are viewing the problem from a different perspective and proposing a solution based on employing the common material property of the micro-fabricated thin film – residual stress. We found that by taking advantage of the compressive residual stress, a bi-stable mechanical resonator could be built and a new spectrum of dynamics can be brought into energy harvesting, which could lower the working frequency range and input g value. The concepts have been analytically simulated and experimentally verified by a meso-scale model.
Lila Ellen Gray. 2013. Fado Resounding: Affective Politics and Urban Life
Authors: Felix Pedro
Published: June 2015

Lila Ellen Gray. 2013. Fado Resounding: Affective Politics and Urban Life. Durham, NC: Duke University Press. 328pp. ISBN 978-0-8223-5471-0 (pbk)
Taporak’s Travels
Authors: Lewis Tony
Published: June 2015

This article investigates how a short piece of music from a remote island in Papua New Guinea (PNG) has ended up in the recorded repertoire of two Australian music ensembles. It traces the routes and processes by which the piece has been incorporated into a contemporary setting located at some distance from its place of origin. The piece, known to the author as ‘Taporak’, is from the garamut (log idiophone) repertoire of the Manus Province of PNG, which the author encountered and documented during his doctoral research in Baluan Island in Manus. Through interviews with key people, the article investigates how two Australian ensembles came to know this piece, how they have interpreted or adapted it for their particular musical contexts and artistic/cultural ideals, what kinds of cultural and cognitive considerations they may be applying in the process, and what artistic decisions they have made to fit the work into their extant repertoire. Amongst other things, each group’s broader identity is brought into sharp relief as the pieces are adapted and used in new contexts of performance and recording.
When Digital is Physical and Ethnomusicologists are File Sharers
Authors: Crowdy Denis
Published: June 2015

This article explores a scenario where digital tools of music production, distribution and consumption are prominent, but the role of the Internet has been less significant. This tends to reveal the importance of the physical aspects of digital technologies, an area that has to date been under-explored. Based on work centred on the creation and distribution of recorded popular music in the Central Province of Papua New Guinea, small home-based recording studios and mobile phones are discussed as pivotal technologies. In just a few years, the chain of production, distribution and consumption of popular music in Papua New Guinea has moved from studios, cassettes and cassette players to laptops, SD cards and phones. Production has moved from centralised and professional to more widespread and amateur. Sharing takes place through the exchange of digital music files (usually in the mp3 format) via Bluetooth networking, and the exchange of portable digital media such as Secure Digital (SD) cards. This raises concerns about the ethics of file sharing as part of ethnomusicological research practice. It is also suggested that, due to the increasingly non-commercial nature of this scene, a movement away from the language of industry is timely. Consequently, production, distribution and consumption are more appropriately referred to as creation, sharing and listening/using. Two main conclusions are explored. Firstly, it is argued that the value of local knowledge is intensified under conditions of increasingly distributed, amateur production, and that this activity reinforces the importance of ethnomusicological research approaches that have traditionally been focused more on performance. The second concerns the extent and nature of the commodification of music in Papua New Guinea, and how this raises issues of economic justice for local producers.
Modelling of chloride penetration in unsaturated concrete
Authors: Geng Jian , Li Long-yuan , Wang Yu
Published: June 2015

In this paper, a new model is proposed to describe the coupled transport of ionic species and ionic solution in unsaturated concrete. The main difference between the present model and most existing models is the inclusion of osmotic effect due to small pore sizes and osmosis-flow due to electrochemical reactions taking place at two electrodes. Chemical- and electro-osmosis is a well-known phenomenon in soils and clays. Cement and concrete materials, whose microscopic properties are very similar to clays, are expected to have a similar behaviour. However, despite the large amount of work that has been published on the osmosis of soils and clays, there is very little work on the cement and concrete materials. The aim of this paper is to address this problem. The model proposed in the paper is applied to predict the chloride penetration in unsaturated concrete and the electrochemical chloride removal in chloride-contaminated concrete by applying an external current. Numerical examples are presented and results are validated using published experimental data.
Microstructure and property of WC/steel matrix composites
Authors: Zhang Ning , Qiang Yinghuai , Zhang Chunhong , Ding Gang
Published: June 2015

Steel matrix composites (SMCs) with 5CrNiMo steel as matrix and tugnsten carbide (WC) particles as hard phase were prepared by inductive electroslag casting technology. The influence of annealing, forging state and quenching tempering state on the microstructures of the particle-reinforced SMCs were investigated by metallographic analysis method. The particle composition and the composition change of the boundary were tested by energy dispersive X-ray spectroscopy with the scanning electron microscope, and the macro and microhardness were determined by Rockwell hardness tester and microhardness tester. The results show that in most parts of the SMCs, the distribution of WC particles was relatively uniform. White WC particles wrapped around a circle of black stripe Fe3W3C compound carbides. A certain thickness of the transition layer existed on the interface of the WC particle and steel matrix, and two kinds of WC grains for ‘iron rich’ and ‘iron poor’ appeared. The macro and microhardness of the composite material improved significantly than that of the 5CrNiMo steel after inductive electroslag casting.
Welcome to the Journal of Amateur Sport!
Authors: Bass Jordan R.
Published: June 2015

Welcome to the first issue of the Journal of Amateur Sport (JAS)! First, I must thank everyone who played an integral role in the development of JAS. Drs. Mark Vermillion, Brian Gordon, Kyle Bunds, and Marion Hambrick were invaluable in their guidance as original members of the editorial and development team. The first editorial board has also played a large part in the excellent quality of the first issue that follows. We hope you enjoy this issue and look forward to receiving your submissions in the future!
Table of Contents
Authors: Bass Jordan
Published: June 2015

Table of Contents for Issue One
National Review of Interscholastic Competitive Balance Solutions Related to the Public-Private Debate
Authors: Johnson James E. , Tracy Daniel R. , Pierce David A.
Published: June 2015

The public-private debate in interscholastic athletics has vexed athletic administrators and policy-makers for more than a century. The ability of private schools to secure athletic talent beyond the defined geographic borders that restrain public schools has led to competitive imbalance in many states. Competitive imbalance is evidenced by a disproportionate amount of athletic success demonstrated by private schools, often in the form of state championships. To determine the current landscape of interscholastic competitive balance, commissioners and high-ranking officials at each state association listed within the directory of the National Federation of State High Schools (NFHS) were contacted to identify their policies. Current competitive balance solutions include enrollment classifications, separate playoffs, enrollment multipliers and subtractors, tournament success factors, and consideration of socioeconomic factors. The results of this analysis provide an overview of competitive balance solutions being implemented in the United States.
The Progressive Involvement of Youth in Niche Sport: The Perspective of Youth Participants and Their Parents
Authors: Buning Richard J. , Coble Cassie , Kerwin Shannon
Published: June 2015

The current study explores youth sport participation by examining the factors perceived to influence youth sampling and specialization in a niche sport. Further, the role of parental influence was examined as a contributing factor to youth sport progression. In-person semi-structured interviews were performed with 18 youth target archery participants and their parents (N = 28). Data analysis revealed target archery may provide a unique context that enhances previously agreed upon perceptions of sampling and specializing within youth sport development. The youth participants’ experiences with target archery were found to both confirm and challenge previous conceptions of the deliberate play and practice framework, while parental influence was largely based on opinion and prior experience. Based on these findings, theoretical contributions, suggestions for future research, and practical implications are discussed.
Narrativa, história e ficção: os history games como obras fronteiriças
Authors: Telles Helyom Viana , Alves Lynn
Published: June 2015

O presente trabalho foi originado a partir das reflexões suscitadas por uma pesquisa de pós-doutorado que investiga como os history games podem contribuir para a produção e o compartilhamento de representações, de imagens e de um imaginário sobre o passado. Entendemos por history games os jogos eletrônicos digitais que possuem, em sua estrutura, narrativas ou simulações de elementos históricos (Neves, 2010). A noção de termo “obras fronteiriças”, é utilizada por Glezer e Albieri (2009) para discutir o papel de trabalhos literários e artísticos que, situando-se fora do campo historiográfico e possuindo um caráter ficcional constituem-se em formas de difusão do conhecimento histórico e de aproximação com o passado. Pretendemos demonstrar como, sob o impacto do giro linguístico, as fronteiras entre história e ficção foram esmaecidas. Em autores como White (1995) e Veyne (2008) encontramos, tanto uma convergência ou identidade entre a narrativa histórica e a literária, como um questionamento ao estatuto epistemológico da História como ciência. Os desdobramentos dessas críticas implicaram em uma valorização das obras ficcionais tanto para o conhecimento, como para a divulgação do conhecimento histórico sobre o passado. Em seguida, examinaremos os elementos das narrativas audiovisuais dos jogos eletrônicos (Calleja, 2013; Frasca, 1999; Jull, 2001; Murray, 2003; Zagalo, 2009), buscando compreender a sua especificidade. A seguir, investigaremos o lugar das narrativas e simulações históricas dos jogos eletrônicos na cultura contemporânea (Fogu, 2009). Por fim, discutiremos como os conhecimentos históricos são apropriados e representados através dos history games (Arruda, 2009; Kusiak, 2002) e analisaremos o seu impacto na produção de uma consciência histórica ou de um imaginário sobre o passado.
Consideraciones paleogeográficas en la bahía de Algeciras. Acerca de un posible tsunami en la Carteia romana (San Roque, Cádiz)
Authors: Arteaga Cardineau Carlos , Blánquez Pérez Juan , Roldán Gómez Lourdes
Published: June 2015

Las excavaciones de urgencia llevadas a cabo en una barriada industrial alfarera de época romana en Puente Mayorga (San Roque, Cádiz), entre los años 2003 y 2004 proporcionó, además de una completa visión acerca de los establecimientos periurbanos de la ciudad de Carteia, una interesante documentación acerca de un posible tsunami. A través de análisis granulométricos, del estudio morfoscópico y de la identificación de su malacofauna el potente nivel de arenas documentado, interpretado arqueológicamente como un hiatus entre dos fases productivas de la citada barriada alfarera, pudo ser identificado como una ola de alta energía sobre cuyo sedimento se apoyaron nuevos vertidos de fallos de cocción y hornadas perdidas de posteriores cocciones.La necesidad de confirmación de tan importante hallazgo y el hecho de que estos estudios, llevados a cabo por un equipo interinstitucional entre la Universidad Autónoma de Madrid y la Universidad de Cádiz, estuvieran enmarcados en otro mayor que, manteniendo el carácter interdisciplinar, dirigía ya la citada UAM bajo el nombre genérico de Proyecto Carteia, posibilitó en 2010 llevar a cabo una campaña de sondeos geoarqueológicos en relación ya directa con esta importante ciudad púnico-romana.Se abarcó así un área que, partiendo de la actual desembocadura del río Guadarranque, en su margen izquierda, llegaba a Carteia y se prolongaba hasta el asentamiento fenicio del Cerro del Prado, o Carteia la Vieja, donde estuvo en el s. VII a.C. la original desembocadura. Fueron un total de ocho los sondeos realizados de los que presentamos ahora un avance de los cuatro primeros, es decir, entre la actual línea de costa y la ladera amurallada de la ciudad de Carteia. Se abarca, así, una parte más que significativa de la bahía de Algeciras, hoy desecada en esta zona y que, para el tema que nos ocupa, parecen confirmar la existencia e importancia del evento detectado en 2003.
Estágio Supervisionado em Gestão Educacional: um relato de experiência na formação de professores em Pedagogia
Authors: Clesnei da Rosa Daiani , Dullius Maria Madalena , Johann Emanueli Luisa , Neumann Martins Silvana , Schuck Rogério José
Published: June 2015

This article presents the results of a research study based on data from reports on supervisions in Educational Management and analyzed by the research group: Master Teacher Training: A place for reconstruction and learning. The study was aimed at identifying the conception of school management held by those who are part of educational institutions. Data was collected from the individual reports of nineteen students from the Education Faculty. The reports contained a description of four stages which made up the discipline phase, taking into account its aims and practices. This article analyses the profile of the educational manager and concepts such as participatory and democratic management, taking as theoretical referents authors such as Lück (2000, 2006, 2009, 2011), Paro (2007, 2010), Cury (2005), and Leal Filho (2011) among others. It was found that those who had managerial positions held different views from those of other employees.