bluuebunny/crossref_metadata_2025 huggingface dataset:
Measuring Agency Costs over the Business Cycle
Authors: Westermann Ramona
Published: September 2017

This paper investigates the joint effects of manager–shareholder agency conflicts and macroeconomic risk on corporate policies and firm value. I first derive the implications of a structural model of a firm with assets in place and an investment opportunity, run by a self-interested manager who captures part of the firm’s net income as private benefits. The model implies that dynamic aggregate agency costs are driven by firms in the upper half of the distribution of private benefits. Managers of those firms capture 0.8% of firms’ net income on average, thereby decreasing aggregate firm value by 1.7%. These agency costs are procyclical (1.9% in booms and 1.4% in recessions) because managerial underleverage decreases default costs particularly in recessions. Furthermore, the model can explain empirical regularities, including the joint level and cyclicality of leverage.

The Internet appendix is available at https://doi.org/10.1287/mnsc.2017.2813 .

This paper was accepted by Gustavo Manso, finance.
Opposite Elements in Clutters
Authors: Abdi Ahmad , Fukasawa Ricardo , Sanità Laura
Published: September 2017

Let E be a finite set of elements, and let L be a clutter over ground set E. We say distinct elements e, f are opposite if every member and every minimal cover of L contains at most one of e, f. In this paper, we investigate opposite elements and reveal a rich theory underlying such a seemingly simple restriction. The clutter C obtained from L after identifying some opposite elements is called an identification of L; inversely, L is called a split of C.

We will show that splitting preserves three clutter properties, i.e., idealness, the max-flow min-cut property, and the packing property. We will also display several natural examples in which a clutter does not have these properties but a split of them does. We will develop tools for recognizing when splitting is not a useful operation, and as well, we will characterize when identification preserves the three mentioned properties. We will also make connections to spanning arborescences, Steiner trees, comparability graphs, degenerate projective planes, binary clutters, matroids, as well as the results of Menger, Ford and Fulkerson, the Replication Conjecture, and a conjecture on ideal, minimally nonpacking clutters.
FACTORS INFLUENCING THE FEE FOR USE OF THE RAILWAY INFRASTRUCTURE
Authors: Novák Petr , Cempírek Václav
Published: September 2017

It is necessary to update the current system of levying charges for railway infrastructure to reflect the current market situation, to take into account the new transport strategy established by the European Union, and to reflect legislative changes in relation to Directive 2012/34/EU on creating a single European railway area. International trends aim to categorize tracks according to technical parameters and parameters based on shipment time, as well as many others. The existence of different opinions on the amount and way to charge fees for railway infrastructure have led the authors of this academic paper to create a plan for a system of charges to be derived from the current production factors as well as from a number of specific new factors used in countries neighboring the Czech Republic.
THE DETAILED PRIORITY OF INTERNATIONAL FREIGHT EXPRESSES IN THE OVERLAPPING SECTION OF RFC 7 AND RFC 9 KOLÍN – CHOCEŇ
Authors: Šrámek Přemysl , Molková Tatiana
Published: September 2017

The main goal of this article is to research the optimal priority of international freight expresses, especially on European freight corridors. This article shows this problem in the context in the overlapping section of RFC 7 and RFC 9 Kolín – Chocen. There is solved changing priority of freight expresses in detail, whereas other train priorities are the same.
Traditional knowledge on integrated pest and weed management in chayote (Sechium edule (Jacq.) Sw.) crops from localities of Chiapas, Mexico
Authors: Rodríguez-Larramendi Luis Alfredo , Guevara-Hernandez Francisco , Campos Saldaña Rady Alejandra , Salas-Marina Miguel Ángel , Gómez-Castañeda Julio César , Fonseca-Flores María De los Ángeles , Valle-Ruíz Leonardo , Basterrechea-Bermejo José
Published: September 2017

This research was carried out in Villaflores and Villa Corzo, located in Chiapas State of Mexico. Specifically, throughout an ethno-agronomical approach, semi-structured interviews were designed and applied to the chayote producers who were selected by random routes. The results indicate the 57.89% of chayote producers in both municipalities, have allowed to control weeds in their crops, and being a higher proportion represented by Villaflores. Given these concerns, they prefer to control weeds throughout traditional methods, basically using mattocks with frequencies of 15 to 30 days after sowing or two to four times per cycle of crop production. Both pest and diseases are mainly controlled throughout chemical methods application. A preference to perform control among periods of higher rainfall or drought is not distinguished. A considerable percentage, which reaches 44% of the interviewed population among both municipalities, report they do not need to control pests and crop diseases.
A comparative study on slurry erosion behavior of HVOF sprayed coatings
Authors: Reyes-Mojena Miguel Ángel , Sánchez-Orozco Mario , Carvajal-Fals Hipólito , Sagaro Zamora Roberto , Camello-Lima Carlos Roberto
Published: September 2017

Este trabajo investiga el comportamiento del desgaste en mezclas erosivas de recubrimientos depositados mediante la técnica de proyección térmica usando el proceso HVOF. Se analizaron tres tipos de recubrimientos, WC-CoCr con estructura de grano fino, Cr3C2-NiCr 75-25 y NiCrWSiFeB, estos últimos con tamaños de grano convencional. Los ensayos de desgaste erosivo se desarrollaron usando un tribómetro de recipiente de mezclas para evaluar la resistencia a la erosión de los recubrimientos a velocidades de impacto de 3.61 m/s y 9.33 m/s y ángulos de impacto de 30 y 90º. El mecanismo de desgaste de los recubrimientos fue estudiado y discutido sobre la base del examen microestructural y la influencia de sus propiedades mecánicas. Se observó que el recubrimiento de carburo de tungsteno exhibe mejor resistencia a la erosión comparada con los recubrimientos de carburo de cromo y metálico debido a sus propiedades de microdureza, tenacidad a la fractura y menor porosidad.
Probabilistic analysis of the active earth pressure on retaining wall for c-f soil backfill under seismic loading conditions
Authors: Brasil Cavalcante André Luís , Rodríguez Rebolledo Juan Félix
Published: September 2017

En este artículo se describe una metodología basada en el método de estimación puntual de Rosenblueth para el análisis del empuje activo desarrollado en un muro de retención con relleno cohesivo-friccionante bajo condiciones de carga sísmica. El principio básico de esta metodología es usar dos estimaciones puntales, i.e., la desviación estándar y el valor medio, para examinar una variable en el análisis de seguridad. Es posible mostrar que aumentando el valor del coeficiente de aceleración sísmica horizontal, el factor de seguridad por volteo decrece y la probabilidad de falla aumenta, especialmente para coeficientes mayores que 0.2. Por otro lado, es observado que el valor medio del factor de seguridad crece cuando aumenta el coeficiente de aceleración sísmica vertical, sin embargo la probabilidad de falla se mantiene prácticamente igual para el valor del factor de seguridad considerado como crítico (1.15).
Traffic modelling of the video-on-demand service through NS-3
Authors: Campo-Muñoz Wilmar Yesid , Astaiza-Hoyos Evelio , Muñoz-Sanabria Luis Freddy
Published: September 2017

La principal característica del servicio de video bajo demanda a través de la tecnología de video streaming es el consumo de grandes anchos de banda, por lo que los planificadores de redes deben considerar este servicio en el momento de dimensionar dichas redes. Para alcanzar esta meta, una de las herramientas es la ingeniería de tráfico y sus modelos asociados. Así, este artículo presenta un modelo de tráfico basado en la simulación por eventos discretos y desarrollado a través del software de código abierto y de investigación en redes, denominado ns-3. Se describen las abstracciones de los elementos de red, y el proceso de construcción de diferentes escenarios de evaluación, independiente de las características del servicio que se desee analizar, y la recolección y visualización gráfica de estadísticas. Finalmente se presentan los análisis de los parámetros de desempeño que permiten obtener las características mínimas de red para soportar el servicio.
Numerical and experimental studies of compression-tested copper, mortar contact method
Authors: Torrente Prato Gabriel Jesús
Published: September 2017

La simulación del ensayo de compresión del cobre se realizó con el método de contacto con mortero y asume: simetría axial, restricción de puntos múltiples de tipo plano, carga concentrada y fricción coulombiana. El cobre se simula como material isotrópico, elástico hasta fluencia, y luego como un material endurecible con plasticidad incremental. El comportamiento del cobre se calculó a partir de experimentos. Se realizaron diecisiete ensayos de compresión sin lubricación a muestras cilíndricas a temperatura ambiente. La relación Esfuerzo vs. Deformación  se calculó usando dos correcciones por fricción; La Corrección de Rowe y la Corrección Dieter. Se concluye que: la simulación realizada con el método de contacto con mortero y la Corrección Dieter es una buena alternativa para simular la prueba de compresión, siendo la diferencia entre la simulación y los experimentales inferior a 7,33%, la hipótesis de simetría axial no aleja la simulación de la realidad y nuevos análisis numérico permitirán el desarrollo de mejores correcciones por fricción.
Energy consumption and quality of service in WBAN: A performance evaluation between cross-layer and IEEE802.15.4
Authors: Correa-Chica Juan Camilo , Botero-Vega Juan Felipe , Gaviria-Gómez Natalia
Published: September 2017

Dentro de los esquemas de comunicación de redes inalámbricas de área corporal (WBAN), se encuentran los protocolos de capa cruzada, constituidos en una novedosa opción para alcanzar un balance efectivo entre consumo eficiente de energía y métricas de desempeño. En el presente trabajo, evaluamos el desempeño de una estrategia de capa cruzada al compararla contra los protocolos del estándar IEEE802.15.4 en una WBAN. Se evaluó el desempeño de ambas estrategias empleando una simulación de redes WBAN. Luego se ejecutó una comparación estadística y se encontró que la estrategia de capa cruzada ofrece un mejor desempeño con respecto a la compensación entre consumo eficiente de energía y algunas métricas de desempeño en nuestra WBAN. Observamos que en general, la estrategia de capa cruzada supera a ambos modos del estándar IEEE802.15.4 (ranurado y no-ranurado) con respecto a consumo eficiente de energía, retraso extremo a extremo, tasa de pérdida de paquetes y goodput.
Determination and Optimization of Flour for Producing Crispy Baby Tilapia using Plackett Burman Design and Central Composite Design Method
Authors: Syamdidi Syamdidi , Ikasari Diah , Octavini Hasta
Published: September 2017

Research on processing of crispy baby tilapia (Oreochromis niloticus) was conducted to obtain type and proportion of flour on this product with central composite design method. This research used 6 types of flour, namely wheat flour, rice flour, potato flour, tapioca flour, corn flour and baking powder. Baby tilapia used for this research were 30-40 day old, 2-3 cm long. Parameters observed were sensory (appearance, odor, taste, texture, overall acceptance) and crispness for the physical parameter. The results showed that only two out of six variables gave big effect on the tested response i.e potato and rice flour. Those two variables were then optimized with central composite design method to obtain the best product. The optimization process demonstrated that the optimum amount of potato and rice flour were 58-60 g (22.16-22.92%) and 40-60 g (15.28-22.92%), respectively.
MICRORNA: ROLE IN GH-SECRETING PITUITARY ADENOMA PATHOGENESIS
Authors: Lutsenko A. S. , Belaya Z. E. , Przhiyalkovskaya E. G. , Mel'nichenko G. A.
Published: September 2017

MicroRNA presents small (19–25 nucleotides long) non-coding RNA molecules which regulate gene expression on post-transcriptional level. Numerous studies revealed microRNA’s important role in physiological processes. Moreover, its aberrant expression has been described in many pathological conditions including pituitary tumors. Pituitary adenomas are benign intracranial tumors with various clinical presentations depending on the type of hormone secretion. Prediction of the pituitary adenoma aggressive level and treatment response is challenging due to the lack of reliable clinical predictors or non-invasive biomarkers. MicroRNAs in body fluids could potentially be a minimally invasive biomarker for tumor diagnosis and a predictor of treatment response and prognosis. Some studies reveal that microRNA is specific for a different pituitary adenoma subtypes. In the article, we review existing evidence on microRNA expression in GH-secreting tumors and its possible involvement in pathogenesis of somatotroph tumors.
First human heart transplantation in the national and foreign history of medicine
Authors: Ivanyushkin A. Ya. , Yudin B. G. , Popova O. V. , Reznik O. N.
Published: September 2017

The first human heart transplant immediately exposed many unsolved problems of organ transplant existing at an early stage of the development of that kind of medical technology. The review of historical, legal and philosophical aspects of the first human heart transplantation in Russia and abroad is presented. Special attention is paid to the role and destiny of the pioneers of heart transplantation. The dramatic lives of Vladimir Demikhov and famous South African surgeon Christiaan Barnard are compared. The hard way of the heart transplantation founders is not lost, worthy successors continued their work, saving the lives of hundreds and thousands of patients.
Modern outlook on morphological criteria of organ and tissue decellularization
Authors: Sotnichenko A. S. , Gubareva E. A. , Kuevda E. V. , Gumenyuk I. S. , Gilevich I. V. , Nakokhov R. Z. , Slavinskiy A. A. , Alekseenko S. N.
Published: September 2017

A rapidly growing development of tissue engineering promotes the increasing interest in the obtainment of various decellularizedtissues and organs. Minimal quality evaluation criteria of obtained tissue engineered constructions have been previously specified. In the discussionpaper the group of authors considers the morphological methods of matrix evaluation applied by various researchers on the model of heart decellularization. The analysis of modern literature and the authors’ own researches have shown that morphological evaluation of decellularization quality has to be complex and should consist of several stages which include both basic and additional evaluation methods.
Understanding the Preference for Airline’s In-flight Airline Events via KANO Model and Timko's Customer Satisfaction Coefficients
Authors:   The Tourism Sciences Society Of Korea, Jang Hye-Jung , Kim Hyoung-Gon
Published: September 2017

The purpose of this study is to investigate customer perceptions toward in-flight events while considering the service differentiation strategy of airlines, via KANO's model. Timko's customer satisfaction coefficients for customer satisfaction and dissatisfaction with in-flight events suggest additional implications for the development of consumer-led in-flight events on airlines. The questionnaire used in this study included all 18 in-flight events actually implemented by several airlines throughout Korea. Respondents were asked to answer to a pair of positive and negative questions as to each event provided in their flight. The results of this study show that the 18 events can be divided into ten attractive quality factors, seven indifferent quality factors, and one natural quality factor. However, the unitary quality factor and the inverse quality factor are not shown in this study. Timko's customer satisfaction coefficients suggest an order of priority for these in-flight events. This study is significant particularly in that the concept of the KANO model was applied to analyze the customer preferences for in-flight events in operation. The results of this study will help airline service marketers make a rational decision based actual evidence rather than intuition when developing and implementing in-flight events that will further enhance service quality.
A Longitudinal Study of Foreign Tourists Visiting Korea in terms of Overall Satisfaction, Intention to Revisit and Recommend, and the Degree of Image Change: A Comparison by Continent and Country in 2007, 2011 and 2015
Authors:   The Tourism Sciences Society Of Korea, Lee Don-Jae , Hwang Ho-Jong
Published: September 2017

This longitudinal study focuses on foreign tourists and investigates their overall satisfaction, intention to revisit, and intention to recommend Korea as a destination. The change in the image of Korea held by foreign tourists in 2007, 2011 and 2015 was examined using an Ordered Logit Model. On average, the values of the four response variables generally increased as they approached the year 2015. For all four variables, female student visitors in their 20’s responded most favorably. Female and student groups also gave the highest number of referrals. Asian visitors, including those from China and Japan, showed low ratings in general, while visitors from North America and Europe showed high ratings. In China, North America, and Europe, gender difference was insignificant, whereas Japan demonstrated a sizable and significant gender difference. The continents that showed the greatest magnitude of marginal effects were Europe and North America where income earners’ revisit intention and image change were greater than that of the students.
Is the summer season losing potential for solar energy applications in South Africa?
Authors: Singh Jyotsna , Kruger Andries
Published: September 2017

Seasonal trends using in situ sunshine duration (SD) and satellite, incoming shortwave solar radiation (SIS) data for South Africa over a period up to six decades were investigated. Trend analysis was applied to SD data of 22 sunshine-recording stations from the South African Weather Service that cover the length and breadth of South Africa. Satellite application facility on climate monitoring provided the high-resolution derived SIS for the period 1983–2013. A number of stations show a statistically significant decreasing trend in SD in all four seasons on a seasonal scale. Declines (number of stations showing significant trend) in SD at 17(7), 8(3), 7(3) and 3(0) stations, were observed for summer, autumn, winter and spring, respectively. The SIS has also shown a decreasing trend over South Africa in most of the regions during the summer season followed by autumn. The results indicated a general tendency of decrease in incoming solar radiation mostly during summer which could be of some concern for solar energy applications.
Die österreichische private Krankenversicherung - Ein Monopol?
Authors: Duller Christine
Published: September 2017

Anhand einiger Konzentrationsmaßzahlen und eines Dominanzmaßes wird die Konzentration am österreichischen privaten Krankenversicherungsmarkt in den Jahren 1992 bis 2001 beurteilt. Die Untersuchung erfolgt auf Basis der abgegrenzten Gesamtprämien unter Berücksichtigung von Konzernzugehörigkeiten und zeigt, dass der Markt seit 1996 eine monopolartige Struktur aufweist. Eine Diskussion der Ursachen und Folgen dieser Marktstruktur rundet den Beitrag ab.
An Application of the Cox-Aalen Model for Breast Cancer Survival
Authors: Baldi Ileana , Ciccone Giovannino , Ponti Antonio , Rosso Stefano , Zanetti Roberto , Gregori Dario
Published: September 2017

Semiparametric hazard function regression models are among the well studied risk models in survival analysis. The Cox proportional hazards model has been a popular choice in modelling data from epidemiological settings. The Cox-Aalen model is one of the tools for handling the problem of non-proportional effects in the Cox model. We show an application on Piedmont cancer registry data. We initially fit standard Cox model and with the help of the score process we detect the violation of the proportionality assumption. Covariates and risk factors that, on the basis of clinical reasoning, best model baseline hazard are then moved into the additive part of the Cox-Aalen model. Multiplicative effects results are consistent with those of the Cox model whereas only the Cox-Aalen model fully represents the timevarying effect of tumour size.
Characterization of Carrageenan Edible films Plasticized with Glycerol
Authors: Rusli Arham , Metusalach M. , Tahir Mulyati Muhammad
Published: September 2017

Concentration of base materials and plasticizers used in the formulation of edible film was believed to affect physical characteristics of the film. The objectives of this study were to evaluate the effects of base material (carrageenan) and plasticiser (glycerol) concentrations on the characteristics of edible films produced and to determine the best concentrations of these two components based on the physical characteristics of the films. The experiment was conducted using a completely randomized factorial design with triplicated. The treatments applied were the concentrations of carrageenan (1%, 2%, and 3% (w/v)) and glycerol (5%, 10%, and 15% (w/w)). The results showed that carrageenan and glycerol concentrations used in the formulation of edible film affect the edible film characteristics. Film thickness and moisture content were significantly influenced by carrageenan and glycerol concentrations, while film elongation was only affected by carrageenan concentration. The best physical characteristic of the edible films was obtained when carrageenan and glycerol concentrations were 3% and 10% respectively.
The study on muffler parameters influence on the pneumatic pressure reducing valve performance
Authors: Igolkin Alexander , Afanasev Kirill , Shakhmatov Evgeny , Stadnik Dmitry
Published: September 2017

The main noise source in gas distribution systems is the gas pressure reduction in regulators. Nowadays the special mufflers, representing a set of orifices, are widely used for pressure regulator noise reduction. However, the installation of such devices may cause malfunction of the unit. That is why there is a need to study the characteristics of regulator with the muffler in order to select the parameters at which the desired pressure reduction is retained and the noise is reduced.This paper studies the regulator which represents an equivalent of reduction valve of a similar scheme with the muffler installed in the outlet line. The output impedance increase may lead to loss of stability and control accuracy. The mathematical model of this system was implemented in the Simulink software in order to analyze the muffler impact on pressure relief valve static and dynamic characteristics. The program in Matlab software was also developed for determination of the noise generated by the system. The experimental research using the pneumatic bench was carried out for mathematical model verification.The dependences between the main system operating parameters and the muffler flow area were obtained as a result of simulation. The muffler influence on the transient processes quality was analyzed. The areas of stability in the regulator and muffler parameter space were calculated. The muffler flow area values, providing the lowest level of the noise generated by the system were determined. The theoretical results have good correlation with experimental data.
Vortex pulsation simulation of a piping noise dampener
Authors: Romanov Kirill , Makaryants Georgy
Published: September 2017

This paper presents a research on dynamic characteristics of an internal pipe noise dampener. The study covers an investigation of vortex pulsations within a pipe system after the dampener. For this purpose, the numerical technique of estimation of hydrodynamic noise after the dampener diffuser has been developed. This technique is based on LES turbulence model. The obtained numerical data illustrates the inherent hydrodynamic noise level in the dampener diffuser. This noise level allows us to estimate background noise condition of the piping in which dampeners are used. The numerical results are verified by experimental data which confirm the adequacy of the developed model at the low frequency range.
A Systematic Review of Information Literacy Programs in Higher Education: Effects of Face-to-Face, Online, and Blended Formats on Student Skills and Views
Authors: Weightman Alison Lesley , Farnell Damian J. J. , Morris Delyth , Strange Heather , Hallam Gillian
Published: September 2017

Abstract

Objective – Evidence from systematic reviews a decade ago suggested that face-to-face and online methods to provide information literacy training in universities were equally effective in terms of skills learnt, but there was a lack of robust comparative research. The objectives of this review were (1) to update these findings with the inclusion of more recent primary research; (2) to further enhance the summary of existing evidence by including studies of blended formats (with components of both online and face-to-face teaching) compared to single format education; and (3) to explore student views on the various formats employed.

Methods – Authors searched seven databases along with a range of supplementary search methods to identify comparative research studies, dated January 1995 to October 2016, exploring skill outcomes for students enrolled in higher education programs. There were 33 studies included, of which 19 also contained comparative data on student views. Where feasible, meta-analyses were carried out to provide summary estimates of skills development and a thematic analysis was completed to identify student views across the different formats.

Results – A large majority of studies (27 of 33; 82%) found no statistically significant difference between formats in skills outcomes for students. Of 13 studies that could be included in a meta-analysis, the standardized mean difference (SMD) between skill test results for face-to-face versus online formats was -0.01 (95% confidence interval -0.28 to 0.26). Of ten studies comparing blended to single delivery format, seven (70%) found no statistically significant difference between formats, and the remaining studies had mixed outcomes. From the limited evidence available across all studies, there is a potential dichotomy between outcomes measured via skill test and assignment (course work) which is worthy of further investigation. The thematic analysis of student views found no preference in relation to format on a range of measures in 14 of 19 studies (74%). The remainder identified that students perceived advantages and disadvantages for each format but had no overall preference.

Conclusions – There is compelling evidence that information literacy training is effective and well received across a range of delivery formats. Further research looking at blended versus single format methods, and the time implications for each, as well as comparing assignment to skill test outcomes would be valuable. Future studies should adopt a methodologically robust design (such as the randomized controlled trial) with a large student population and validated outcome measures.
Health Sciences Patrons Use Electronic Books More than Print Books
Authors: Miller Robin Elizabeth
Published: September 2017

A Review of:
Li, J. (2016). Is it cost-effective to purchase print books when the equivalent e-book is available? Journal of Hospital Librarianship, 16(1), 40-48. http://dx.doi.org/10.1080/15323269.2016.1118288

Abstract

Objective – To compare use of books held simultaneously in print and electronic formats.

Design – Case study.

Setting – A health sciences library at a public comprehensive university with a medical college in the southern United States.

Subjects – Usage data for 60 books held by the library simultaneously in print and electronically. The titles were on standing order in print and considered “core” texts for clinical, instructional, or reference for health sciences faculty, students, and medical residents.

Methods – Researchers collected usage data for 60 print titles from the integrated library system and compared the data to COUNTER reports for electronic versions of the same titles, for the period spanning 2010-2014.

Main Results – Overall, the 60 e-book titles were used more than the print versions, with the electronic versions used a total of 370,695 times while the print versions were used 93 times during the time period being examined.

Conclusion – The use of electronic books outnumbers the use of print books of the same title.
Call for Applicants: Evidence Based Library and Information Practice Evidence Summaries Writers
Authors: . .
Published: September 2017

No abstract.
Maintaining Quality While Expanding Our Reach: Using Online Information Literacy Tutorials in the Sciences and Health Sciences
Authors: Matlin Talitha Rosa , Lantzy Tricia
Published: September 2017

Abstract

Objective – This article aims to assess student achievement of higher-order information literacy learning outcomes from online tutorials as compared to in-person instruction in science and health science courses.

Methods – Information literacy instruction via online tutorials or an in-person one-shot session was implemented in multiple sections of a biology (n=100) and a kinesiology course (n=54). After instruction, students in both instructional environments completed an identical library assignment to measure the achievement of higher-order learning outcomes and an anonymous student survey to measure the student experience of instruction.

Results – The data collected from library assignments revealed no statistically significant differences between the two instructional groups in total assignment scores or scores on specific questions related to higher-order learning outcomes. Student survey results indicated the student experience is comparable between instruction groups in terms of clarity of instruction, student confidence in completing the course assignment after library instruction, and comfort in asking a librarian for help after instruction.

Conclusions – This study demonstrates that it is possible to replace one-shot information literacy instruction sessions with asynchronous online tutorials with no significant reduction in student learning in undergraduate science and health science courses. Replacing in-person instruction with online tutorials will allow librarians at this university to reach a greater number of students and maintain contact with certain courses that are transitioning to completely online environments. While the creation of online tutorials is initially time-intensive, over time implementing online instruction could free up librarian time to allow for the strategic integration of information literacy instruction into other courses. Additional time savings could be realized by incorporating auto-grading into the online tutorials.
Editorial
Authors: Santos Gildenir Carolino
Published: September 2017

É com a imensa satisfação que lançamos mais um fascículo corrente do periódico: ETD – Educação Temática Digital. Costumeiramente, nos deparamos com a questão: O que é necessário para produzir um bom periódico? Automaticamente chegamos a uma resposta: basta possuir uma equipe editorial, e manter uma parceria com autores e colaboradores que queiram compartilhar seus conhecimentos e sabiamente publicar seus trabalhos num veículo de comunicação reconhecido pela comunidade.
Propaganda, grafite e as representações de uma cidade negra
Authors: Finn John
Published: September 2017

Na imaginação geográfica dos Estados Unidos, o Brasil é um País de futebol, samba e biquínis. Representações do Brasil entram nos EUA através dos filtros culturais de Pelé e a Garota de Ipanema. Mas nesta visão se perde a historia intricada e complexa da raça no Brasil, especialmente na cidade do Salvador da Bahia. Mas, chegando de fora e vendo as representações raciais pela propaganda popular, nunca se imaginaria que mais de 80% dos soteropolitanos é de descendência africana. Neste artigo, contextualizarei primeiramente Salvador em termos raciais no Brasil. Então, após examinar as atuais teorias das raças e das suas representações, desconstruirei algumas das representações raciais mais chocantes e contraditórias, do ponto de vista de uma pessoa relativamente nova na Bahia. Concluirei com as observações do grafite como uma maneira popular de contestar as representações brancas dominantes numa cidade negra, através da qual as representações raciais são democratizadas nas superfícies verticais da capital baiana.
Espaços extraordinários: ensaio sobre a representação do espaço geográfico na HQ “A Liga Extraordinária” de Alan Moore & Kevin O’neill
Authors: Fernandes Rodrigo Emanoel
Published: September 2017

A HQ “Liga Extraordinária” insere, numa mesma trama, diversos personagens clássicos da literatura fantástica inglesa do século XIX, porém procurando preservar o máximo possível as características descritas nos livros originais. Isso cria a necessidade da elaboração de um único espaço geográfico que seja capaz de justificar a presença simultânea de personagens que não foram idealizados para interagir harmoniosamente. Como resultado, a HQ se destaca por sua forma singular de representação do espaço geográfico, pouco comum na mídia, apresentando uma Londres do século XIX que destoa daquela que a maioria dos leitores está habituada, ainda que (ou por isso mesmo) seja mais adequada aos personagens que a habitam. Um “espaço extraordinário” tão (in)coerente e (des)harmonizado com seus “extraordinários” habitantes quanto o espaço real em relação a nós mesmos, encontrando assim eco nos recentes trabalhos da geógrafa americana Doreen Massey.
Cartas, Caminha(o), viajantes, mutantes, mares: grafias (in)visíveis (des)marcando espaços (s)em tempos
Authors: Andrade Elenise Cristina Pires de , Oliveira Renato Salgado de Melo
Published: September 2017

Caminha encaminha uma carta ao Rei: “Da marinhagem e das singraduras do caminho, não darei aqui conta a Vossa Majestade - porque não saberei fazer e os pilotos devem ter este cuidado - e portanto, Senhor, do que hei de falar começo e digo”. Pretendemos, pelas viagens proporcionadas nesse texto, também falar e dizer de novas terras, outras grafias, diversos tempos. Criaturas vistas nas Terras Novas, apresentadas aos velhos olhares por Afonso d'Escragnolle-Taunay, mutantes dos filmes da Marvel Comics, X-Men. Tantas vidas, tantas novidades que escapam do controle sobre o que se classificar como novo, velho; normal, anormal; liberdade, controle. Que (in)visibilidades pulsariam dessas vidas? Tempos que se multiplicam nas memórias (ou seriam nos esquecimentos?) dos mutantes Wolverine e Magneto que nos acompanham por esses mares, memórias, marcações na pele. No primeiro filme o tempo universal da liberdade, sempre ela: a liberdade em tensões quase insuportáveis. No segundo, o espaço é sinal do passado, permanência de um tempo-memória. E por último o tempo que se arrasta da prisão, tempo que não pode ser liberado pois precisa ser normalizado. Tempos e lugares que se (?) escrevem (in)visíveis com os mutantes, pelos mares, com os viajantes que, como Caminha, sempre escrevem cartas. “Beijo as mãos de Vossa Alteza. Deste porto seguro, da vossa Ilha de Vera Cruz, hoje, sexta-feira, primeiro dia de maio de 1500” que, de onde começo, não termino. Também sabendo que possa, a quem se endereça tal grafia, d’ela não ter achamento. “Isto tomávamos nós nesse sentido, por assim o desejarmos”.
Outros mundos: perversão no planisfério político
Authors: Preve Ana Maria Hoepers , Rechia Karen Christine
Published: September 2017

O exercício é perverter o mundo para fazer aparecer os outros do mesmo mundo. Esta é a força das duas experiências relatadas no trabalho com os planisférios políticos. Uma delas diz respeito a um curso de formação continuada para professores de História e Geografia da rede municipal de Sombrio/SC e o outra ao grupo de internos do hospital de custódia e tratamento psiquiátrico em Florianópolis/SC (HCTP). No exercício proposto distribuímos às pessoas um planisfério político e pedimos que pervertessem o mundo. O presente texto aponta, além da noção de perversão para a noções de experiência em educação, como articuladoras de mais um princípio reflexivo no campo das imagens, neste caso as imagens da geografia. Nosso intuito com este trabalho foi o de apresentar as imagens e estabelecer com elas uma conversa problematizadora acerca da informação adquirida sobre o mundo. Tratamos do exercício com os dois grupos não numa relação valorativa, mas no sentido de identificar o que os atravessa, os constitui e os faz diferentes.
Petrópolis com olhos de crianças: o retrato do espaço urbano como suporte didático
Authors: Dias Ana Cecília Machado
Published: September 2017

Compreender a cidade a partir do que as crianças nos mostram por meio de seu olhar fotográfico se faz objeto de estudo neste trabalho, questões como: Quais imagens ao nosso redor despertam a atenção das crianças? Como elas se apropriam do espaço da cidade? O que percebem ao observar a geografia local? As crianças aprendem interagindo com o meio cultural e social em que vivem, quando a escola utiliza a cidade como um grande laboratório de pesquisa para observação e investigação das imagens, está contribuindo para a aprendizagem de conceitos representados no dia-a-dia onde espaço e culturas se entrecruzam nas mais variadas linguagens revelando as características do cotidiano. Essa ação confere credibilidade a uma criança capaz, curiosa, que experimenta o mundo, que é competente e ativa, portanto, alguém que não é somente consumidor de cultura e de valores, mas que com suas idas e vindas pela cidade se torna responsável pela produção e preservação do espaço urbano.
Algumas perspectivas sobre a interpretação na História
Authors: Gomes Jônatas Roque Mendes
Published: September 2017

Abordo nesse texto como alguns autores trabalham ou analisam o paradigma hermenêutico. Esta perspectiva é relevante para pesquisadores que se utilizam, principalmente, da análise de textos e discursos para o seu fazer histórico. O estudo aprofundado do paradigma interpretativo e suas variantes apresenta-se como uma boa alternativa quando nos deparamos com análise da linguagem para a escrita da história. Nesse sentido, destacaremos autores como Hayden White, François Dosse, Hans-Georg Gadamer e, principalmente, Reinhart Koselleck.
O Brasil em tempos da Constituinte de 1823: uma interpretação
Authors: Leme Marisa Saenz
Published: September 2017

Em 1823, ano em que se reuniu a Assembleia Geral Constituinte e Legislativa do Império do Brasil, Jozé Bernardino Baptista Pereira D´Almeida, futuro ministro interino, sucessivamente, da Fazenda e da Justiça, do governo de D. Pedro I no crítico ano de 1828 – em que se desenvolvia um ensaio de governo com base parlamentar – publicou um pequeno livro sintomaticamente intitulado Reflexões historico-politicas. Nesse trabalho, após uma breve reflexão sobre a colonização e a chegada da corte portuguesa ao Rio de Janeiro, o autor se dedicou à análise dos acontecimentos sequenciais à Revolução do Porto, de agosto de 1820, com especial ênfase à Constituinte e às propostas de organização socioeconômica e política para o novo país. Tendo autor e obra permanecido esquecidos na memória social e na historiografia, objetiva-se, no presente artigo, avaliar a visão histórica e os projetos políticos desse personagem, num momento crucial para a institucionalização do Estado naquele país em formação.
Patrimônio cultural e leis de proteção no município de Guarulhos (SP), entre as décadas de 1980 e 2010
Authors: Paiva Odair da Cruz
Published: September 2017

Nas últimas quatro décadas, municípios de médio e de pequeno porte criaram Conselhos com vistas à preservação de seus bens culturais, explicitando práticas e sentidos para a produção de uma escrita da história local. Nesse contexto, disputas pela história e memória a serem preservadas manifestam escolhas que expõem ou ocultam a presença de sujeitos, dependendo das concepções sobre a história local, sua dinâmica e desenvolvimento. Este artigo tem por objetivo analisar os bens patrimonializados e a legislação de proteção do patrimônio cultural em Guarulhos (SP), enquanto elementos que revelam fragmentos, faces ou fases da problemática urbana, das disputas sobre a escrita da história e as perspectivas acerca do patrimônio cultural. Para esta reflexão utilizei como fontes a legislação municipal de proteção ao patrimônio cultural e documentos depositados no acervo do Arquivo Histórico Municipal.
Entre o velho, o atual e o inédito: para quem serve a história?
Authors: Silva Camilla Cristina
Published: September 2017

Vivenciamos um presente enredado pela marca espectral do passado. Passado que é presença para atingidos direta e indiretamente pela violência, que por um tempo foi emudecedora. Passado que é ausência, sobre o qual é impossível agir ou mesmo fazer justiça, para a historiografia. Entre os caminhos da justiça de transição e da escrita da história profissional o artigo intenta em vez de responder, provocar: para quem serve a história?
Study on partial replacement of groundnut shell ash with cement
Authors: Lakshmi Nadiminti Venkata , Sagar Polinati Satya
Published: September 2017

Concrete plays a prominent role in the construction industry. In the present scenario, there is a shortage of this material so there is a need to find alternatives to replace it in the concrete. In order to overcome this situation; many waste products which are available freely like a paper waste, red mud, rice husk and plastic waste can be used.  Among all of these, Ground nut shell ash is one of the good waste materials available from the oil industry. It can be used widely for the replacement of cement. The ground net shell contains CaO, SiO2, Al2O3, and Fe2O3. This experimental investigation was carried out to evaluate the strength of concrete, in which cement was replaced with ground nut shell ash for cubes, cylinders, and Prisms with different percentages which vary from 0% to 30% at an interval of 5% were performed. Concrete was batched by weight on adopting a ratio of 1:2:4 with water–cement ratio of 0.6. Concrete cubes of 150*150*150 mm in dimensions, cylinders of 150*300 mm in dimensions and 100*150 mm prisms are used. These Cubes, cylinders, and prisms were tested for 7, 14 and 28 days for compression, flexural and split tensile strengths. It is observed that 10% replacement of ground nut shell ash shown the highest strength values when compared with other percentages and for 15% replacement of ground nut shell ash the compressive and split tensile strength obtained the highest strength rather than other flexural strength.
Determination of Vitamin E in Cereal Products and Biscuits by GC-FID
Authors: Pasias Ioannis N. , Kiriakou Ioannis K. , Papakonstantinou Lila , Proestos Charalampos
Published: September 2017

A rapid, precise, accurate and low cost method for the determination of vitamin E (α-tocopherol) in cereal products and biscuits was developed. The uncertainty was calculated for the first time and the methods were performed in different cereal products and biscuits, characterized as “superfoods”. The limits of detection and quantification were calculated. Accuracy and precision were estimated using the certified reference material FAPAS T10112QC and the determined values were in good accordance with the certified values. The health claims according to the daily reference values for vitamin E were calculated and the results proved that the majority of the samples examined showed %daily value higher than 15%.
A cross-university initiative to enhance SOTL through a students as partners approach
Authors: Bryson Colin
Published: September 2017

This case study evaluates a new initiative to establish a cross-disciplinary forum focusing on enhancing learning, teaching and the student experience. All staff and students are welcome to participate and participants set the agenda themselves. The intention is to have open and informal dialogue and to work in partnership towards setting up collective participatory action-research projects. This is modelled on the Teaching and Learning Academy at Western Washington University (Werder and Otis, 2010). An important aim was to create a space to give voice for those - the so-called ‘hard to reach’- who do not get such opportunities in traditional structures. There have been many challenges to creating a sustainable and successful working model, not least such barriers as communications, creating time and opportunity and working against current dominant cultures. Nonetheless, staff and students, including many international students, have participated and found legitimacy to discuss their own priorities.
Exploring how a ‘Sense of Belonging’ is facilitated at different stages of the student journey in Higher Education.
Authors: Humphrey Owen , Lowe Tom
Published: September 2017

This paper gives an overview of a study conducted at the University of Winchester to explore students’ ‘sense of belonging’ at one particular UK institution. The project was completed in two phases: first, an investigation via a ‘Feedback Forum’ of the different stages and factors contributing to a ‘sense of belonging’ and the points in time during the student journey where this was achieved. Second, this initial data was coded to provide a series of categories which informed the creation of an institution-wide survey to investigate further which types of engagement led to a ’sense of belonging’, and to what extent, for each category identified. This research was influenced by the national policy and market economy within current UK Higher Education (HE), with a focus on retention and student satisfaction, which has, in turn, been linked to belonging (Thomas, 2012; Morgan, 2003). The study was undertaken, and the paper authored, through a student-staff partnership within the Winchester Student Fellows Scheme (described by Sims et al, 2014).
‘Take them Serious’: Strategic interventions to foster students' academic writing skills
Authors: Abegglen Sandra , Sinfield Sandra , Burns Tom
Published: September 2017

The present paper builds on Elbow’s (1998) idea of ‘free writing’ to explore methods to foster academic writing skills. Rather than focusing on a deficit student in need of ‘fixing’, we embed ‘free writing exercises’ within classroom practice so that all students develop a critical writing habit. The aim of this paper is to explore how we enable students to find an academic ‘voice’ as we support them on the way to becoming successful academic writers. In this context, we argue for academic/study skills modules/strategic interventions that respect ‘hard to reach’ students as we build on their existing strengths and knowledge – and develop their writing skills.