bluuebunny/crossref_metadata_2025 huggingface dataset:
A fotografia no estudo do eclipse lunar
Authors: Bertuola Alberto , Romão Kelmy Victória
Published: June 2017

Obtivemos neste trabalho um valor para o ângulo do cone de sombra da Terra estudando um eclipse lunar total de duração máxima. Assumimos conhecidos o valor do período orbital da Lua, a distância média Terra-Lua e o diâmetro equatorial da Terra. Essas quantidades foram combinadas com o valor do parâmetro geométrico, obtido a partir do tratamento de imagem da fotografia do eclipse. Os resultados foram comparados com os valores atuais dos diâmetros aparente da Lua e do Sol.
Life cycle carbon emissions inventory of brick masonry and light steel framing houses in Brasilia: proposal of design guidelines for low-carbon social housing
Authors: Caldas Lucas Rosse , Lira Júlia Santiago de Matos Monteiro , Melo Pedro Corrêa de , Sposto Rosa Maria
Published: June 2017

Abstract This study evaluated the CO2eq emissions during the life cycle of two social housing projects in the city of Brasilia. A house of ceramic brick masonry was compared to a light steel framing one. The life cycle carbon emissions assessment (LCCO2A) with a cradle-to-grave approach was used. The relation between the thermal performance of the wall systems and CO2eq emissions in the operational phase of the houses were evaluated using the DesignBuilder software. In addition, six scenarios composed of three CO2eq emission factors from the Brazilian electrical grid and two schedules of occupation of houses (full and part time) were evaluated. The brick masonry house presented less CO2eq emissions than the light steel framing one. For both houses, the operational phase was the most significant regarding the total CO2eq emissions (50% to 70%), followed by the construction (20% to 30%), maintenance (11% to 20%) and end-of-life (lower than 1%) phases. The results also showed the importance of considering different CO2eq emission factors for the Brazilian context in the operational phase. Finally, based on the results obtained, design guidelines for low carbon social housing were proposed.
Cais Mauá: percepção dos usuários da cidade, diretrizes e o projeto de revitalização para a área
Authors: Antocheviz Fabiana Bugs , Reis Antônio Tarcísio da Luz , Limberger Lucienne Rossi Lopes
Published: June 2017

Resumo Este artigo tem como objetivo analisar a percepção e a frequência de uso do Cais Mauá, uma área portuária desativada, por parte de três grupos de usuários da cidade de Porto Alegre, identificando os aspectos positivos e negativos percebidos por esses grupos. Ainda, é investigada a relação entre a percepção desses usuários, as diretrizes de intervenção para a orla elaboradas pela Prefeitura de Porto Alegre e pelos pesquisadores, e o projeto de revitalização proposto para esse setor da orla do Guaíba. A coleta de dados consistiu na aplicação de questionários via internet aos três grupos de usuários, nomeadamente arquitetos, não arquitetos com formação universitária e aqueles sem formação universitária. Os resultados possibilitam verificar a importância dessa área urbana no contexto da cidade, confirmando a relevância da percepção dos usuários da cidade na elaboração de diretrizes e no desenvolvimento de projetos de intervenção urbana.
In silico metaheuristic tailoring of quaternary copolymers
Authors: Thakral Priyanka , Kukreti Shrikant , Bakhshi Ashok Kumar
Published: June 2017

Particle swarm optimization has been integrated with the negative factor counting technique and inverse iteration method for efficient tailoring of quaternary low-bandgap copolymers. To analyze the performance of this methodology, model quaternary copolymers have been designed. Various parameters have been carefully selected while devising this methodology for engineering quaternary polymers. In particular, a swarm size of 40 has been chosen as it is found to impart good exploring skills to the algorithm. Also, the fitness function so chosen is found effective for judicious decision making. Verifying the reliability of this approach, quaternary D–A–D copolymers based on cyclopentadienylene, silole and thiophene donors, and dicyanomethylene and carbonyl acceptors respectively have been tailored. Cyclopentadienylene–carbonyl is obtained as the best D–A couple and is found to be highly desirable for designing low-bandgap polymeric skeletons. DOS curves of the investigated copolymers give a similar qualitative picture of the trends in the electronic properties as obtained from the algorithm. Such an in silico approach efficiently returns optimized results worthy of synthetic trials.
FHA, Fannie Mae, Freddie Mac, and the Great Recession
Authors: Passmore Wayne , Sherlund Shane M.
Published: June 2017

Did government mortgage programs mitigate the adverse economic effects of the financial crisis? We find that counties with greater participation in traditional government mortgage programs experienced less severe economic downturns during the Great Recession. In particular, counties with higher levels of participation in FHA, Fannie Mae, and Freddie Mac lending had relatively smaller increases in mortgage delinquency rates; smaller declines in purchase originations, home sales, home prices, and new automobile purchases; and smaller increases in unemployment rates. These results hold both in 2009 (soon after the peak of the financial crisis) and in 2014 (six years after the crisis). The persistence of better economic outcomes in these counties is consistent with a view that mortgage originators' access to a liquidity outlet (in this case, government-backed securitization) is key to maintaining credit flows and economic growth during financial turmoil.
Troponina T vs Troponina I como Valor Predictivo para Síndrome Coronario Agudo en menores de 80 Años
Authors: Pla Cala PE , Polo Barranco EA , Pe S , Cadena Bonfanti A.
Published: June 2017

Resumen – Actualmente en la injuria miocárdica, ha tenido gran relevancia clínica la utilidad de las troponinas como método diagnóstico, repercutiendo en el manejo del síndrome coronario agudo. Objetivo: Analizar la importancia de los biomarcadores troponina T e I y otros elementos adyuvantes que cumplen un papel trascendental como es el electrocardiograma y los diferentes métodos invasivos, el cual brinda una orientación para la concepción de un diagnóstico oportuno que permita tomar las acciones pertinentes en un paciente con síndrome coronario agudo. Materiales y Métodos: Estudio descriptivo comparativo en 35 pacientes, adultos mayores de 21 años y menores 80 años, que se encontraban hospitalizados en la Empresa Social del Estado Centro de Atención y Rehabilitación Integral - E.S.E CARI de Alta complejidad, en el periodo comprendido entre el año 2012 a 2014. Resultados: Los pacientes presentaron síndrome coronario agudo (infarto agudo de miocardio con o sin elevación del ST), con factores de riesgo cardiovascular tales como: sedentarismo, tabaquismo, hipertensión arterial, diabetes, valvulopatías, dislipidemia y antecedentes de cardiopatía isquémica. El punto a analizar fue la elevación de los biomarcadores troponina T y troponina I en un periodo menor y mayor a 3 horas, desde el inicio de los síntomas (dolor torácico, criodiaforesis, disnea) hasta el ingreso a la institución hospitalaria. Se compararon los resultados obtenidos de cada uno de estos biomarcadores en el diagnóstico precoz y oportuno del síndrome coronario agudo. De las muestra analizada (n=35 pacientes) se obtuvo que la troponina T< 3 horas se elevó un 76.4% en rangos de edad entre los 60-80 años en contraste con troponina I < 3 horas en ese mismo grupo etario que fue de 70.5%. Conclusiones: se evidenció que ambos biomarcadores son equiparables con una ligera ventaja de la troponina T con respecto a la I.
The Effect of Changing Public Policy on the Automatic Termination of Fixed - Term Employment Contracts in South Africa
Authors: Geldenhuys Judith
Published: June 2017

Automatic termination is an accepted means of terminating fixed-term employment relationships. The use of "automatic termination" clauses in employment contracts has become commonplace. Awareness of the potential for abuse of these contractual mechanisms is increasing. Recent case law on the issue indicates that the public policy, which serves as test for validity and/or enforceability of "automatic termination" clauses has changed. The impetus for the protection of "non-standard" or atypical employees is underscored by policy considerations that have been incorporated by the recent legislative amendments. These developments may very well place a heavier burden than before on employers who opt to rely on "automatic termination" clauses to sustain an argument in favour or their validity and/ or enforcement.
Instruments per a l’avaluació de la competència digital de l’alumnat de secundària
Authors: Ait Abou Ez Zahra , González Martínez Juan
Published: June 2017

Als darrers anys, moltes investigacions s’han dedicat a la reflexió al voltant del concepte de competència digital i de l’essència del nou alumnat, que ha crescut envoltat de tecnologia. Com a resultat d’aquestes reflexions, han sorgit diversos instruments que miren d’avaluar la competència digital des de diferents perspectives. A aquest article partim de la necessitat d’avaluar aquesta competència a l’alumnat de secundària, per determinar les accions formatives necessàries per garantir-ne l’adquisició, al servei de l’aprenentatge. Analitzem els dos instruments disponibles específicament adreçats a l’alumnat d’aquesta edat, iDCA i INCOTIC-ESO, i determinem els paral·lelismes i les divergències. Finalment, proposem l’ús complementari per obtenir un diagnòstic més complet que lligui amb la definició més completa de competència digital.
Direito à Saúde: Análise à luz da Judicialização
Authors: Santos Alethele de Oliveira
Published: June 2017

Resenha
To our Readers
Authors: Zvereva N.V. , Roschina I.
Published: June 2017

The editors’ opening remarks сontains general information about the structure and content of presented journal issue and evaluation of new and classic topics raised by the authors in their articles. The journal issue is devoted to the results of the past conference in memory of the 105th anniversary of one of the founders of Russian diagnostics in medical (clinical) psychology – S.Ya. Rubinshtein (1911–1990).
Pedro Cabello Máiz y su arquitectura racionalista en Gijón
Authors: Arrieta Berdasco Valentín
Published: June 2017

RESUMEN:Pedro Cabello Máiz debe considerarse como uno de los arquitectos más importantes del Gijón de mitad de siglo XX, con una obra heterogénea desarrollada en esta ciudad asturiana principalmente entre los años 1932 y 1945. El presente artículo pretende estudiar esta etapa de su actividad profesional en la ciudad, donde Cabello se convirtió en uno de los principales baluartes del racionalismo arquitectónico, que hábilmente supo combinar con otros estilos arquitectónicos previos y posteriores.PALABRAS CLAVE:Arquitectura, Racionalismo, Gijón, Cabello.ABSTRACTPedro Cabello Máiz should be considered as one of the most important architects in Gijón in the mid-twentieth century, who was made a heterogeneous production in this asturian city between 1932 and 1945. This paper aims to study this stage of his professional production in that city, where Cabello was one of the main supporters of rationalism architecture, which he combined with others previous and later architectonic styles.KEYWORDS:Architecture, Rationalism, Gijón, Cabello.
Feet injuries in children with tarsal coalitions
Authors: Sapogovskiy Andrei V.
Published: June 2017

Introduction. Tarsal coalition is a foot bone malformation, characterized by bony, cartilaginous or fibrosis fusion between the tarsal bones. It clinically appears as decreased mobility of the tarsal joints. This feature can be predicting factor for feet injuries.

Aim: This study analyzed the frequency and nature of the injuries of the feet in patients with tarsal coalitions.

Materials and methods. TThe article presents data on the frequency and nature of feet injuries in patients with tarsal coalitions (22 patients (30 feet) with talocalcaneal coalitions and 28 patients (45 feet) with calcaneonavicular coalitions) aged 12 to 18 years. The control group included 50 patients (80 feet) with flatfeet without tarsal coalitions, aged 12 to 15 years. The study was a retrospective analysis of anamnestic data of feet injuries.

Results. The study found patients with tarsal coalitions had a significantly higher incidence of ankle sprains (the general group – 26 patients (52%) versus the control group – 12 (24%).

Conclusion. Tarsal coalition can be predicting factor to feet injuries. Patients with tarsal coalitions should consider this concern for sports activities. They can use different orthoses, tape, or choose not to engage in traumatic sports to avoid ankle sprains.
Rate and structure of complications in spine surgery
Authors: Fadeev Evgeny M. , Haydarov Valery M. , Vissarionov Sergey V. , Linnik Stanislav A. , Tkachenko Aleksandr N. , Usikov Vadim V. , Mansurov Djalolidin S. , Nur Оmar F.
Published: June 2017

The risk of intraoperative and postoperative complications after spinal surgery still remains in the hospital-acquired conditions of any hospital. The methods for performing spinal surgery in children and adults are developing and constantly improving. A significant number of constructions for performing spinal surgery are created by leading manufacturers. The frequency of local and systemic surgical complications has not decreased. Knowing the rate and structure spinal surgery complications can expand the ability to predict and prevent them, which is important for medical science and practice. The presented review of literature addressed the current state of knowledge on spinal surgery complications.
O Impacto do Diálogo Mediado pela Internet
Authors: Venâncio Elizabeth De Lima
Published: June 2017

O artigo debate como o diálogo mediado pela internet impacta a produção de sentidos do usuário quanto à intolerância religiosa, na perspectiva da Nova Teoria da Comunicação, de Ciro Marcondes Filho. Analisa a interface entre os conceitos de comunicação e intolerância religiosa, para desvelar os sentidos da comunicabilidade em tal prática social.
O Lugar que queremos
Authors: Fernandes Luiz Carlos Do Carmo
Published: June 2017

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The Same but Different: Making Meaning from Modified Texts with Cross-cultural Themes
Authors: Leung Cynthia B. , Bennett Susan V. , Gunn AnnMarie Alberton
Published: June 2017

Reader response theory provides the framework for the present study that explored literary elements and cultural responses of fifth-grade students to two modified versions of a cross-cultural text, Homesick: My Own Story by Jean Fritz. One group of students read the first chapter of the book and another group read a modified basal reader version that had deleted cultural information. Group discussions of the texts were videotaped and transcribed. Through constant comparative analysis of field notes and transcripts, two themes emerged: (a) personal interest and connections to stories and (b) cultural implications and misinterpretations.
Boranes in Organic Chemistry 1. α-Carbonylalkyl- and β-Oxyalkylboranes in Organic Synthesis
Authors: Dembitsky V.M. , Tolstikov G.A. , Srebnik M.
Published: June 2017

This review is devoted to the synthesis of a-carbonylalkyl- and β-hydroxy-alkyl boranes and their use in organic synthesis. a-Carbonyl-alkylboranes include several heteroatomic compounds, in particular, [1.2.3]-diazaborinines, uracyl boronic acids, and [1.2.3.4]-diaza-diboretes. The latter type has been obtained by the ketene aminoborations. The reactions of halogenboranes with diazoesters and sulfur ylides resulting in formation of a-carbonyl alkylborates containing diazofunction or ylide structural fragment are described. Amino and halogen boration of acetylenic acid esters was also used for the synthesis of a-carbonyl alkyl boranes. Reactions involving Cr-carbene complexes and acetylenic borone esters were presented for the synthesis of naphthoquinone boronic acids. The formation of amidoboranes by boration of dichloroacetanilides was remined. Boration of 4,8-dimethoxy-2-quinolone with trimethylborates leading to 2-quinolone-3-boronic acid was described. The common synthetic method to a-carbonyl alkyl boranes based on the hydroboration of acrylic acid derivatives was discussed. The results of enhydrazones hydroboration, leading to stable cyclic complexes have been mentioned. The interaction of a-bromoketones with trialkyl or dialkylboranes represents as a general synthetic method to a-carbonyl alkyl boranes. Synthetic approaches to â-hydroxy alkyl boranes are performed. The wide spread hydroboration of vinyl and allyl esters received a well-described attention. The hydroboration of cyclanone enol acetates, 3-keto- and 17-keto-steroids and cyclic allyl alcohol acetates was discussed. The results of aliphatic and alicyclic vinyl esters (including dihydrofuran derivatives) boralylation leading to β-hydroxy alkyl boranes have been envisaged. The synthesis of optically active β-hydroxy alkyl boranes using chiral borane hydrides was discussed. The heterocyclic boran dihydrides are obtained by the hydroboration of dihydropyranes, chromenes and flavenes. Borosilylation of allyl allenylic esters was also been envisaged. The synthetic scheme to optically active boranes and further optically active alcohols were presented. The problems of selectivity regularities in hydroboration reaction by intermolecular complex formations have been discussed.
Development of New Non-waste Catalytic Technology for Oil Desulfurization as a Method to Reduce the Environmental Pollution
Authors: Zhubanov K.A. , Emelyanova V.S. , Zhalimbetova B.K. , Baisalbaeva A.M. , Selitskaya A.G. , Shakieva T.V.
Published: June 2017

This study is devoted to the development of non-waste technology of oil and petroleum refining. The experimental material of a soft catalytic oxidation of oil sulfurorganic compounds with formation of sulfoxides and sulfacides, having high consumer qualities is presented. Based on the IR-spectral data and mathematical calculations the optimal conditions of the process are defined, the kinetics of the oxidation is investigated and the process mechanism is offered. The results of research and approbation of highsulfurous oils of the Kazakhstan oilfields are presented. These materials are offered for introduction in the application by oil companies, which explore and produce the oil from oilfields of Western region of
Republic of Kazakhstan.
Mesoporous V-AlPO – New Partial Oxidation Catalyst
Authors: Subrahmanyam Ch. , Viswanathan B. , Varadarajan T.K.
Published: June 2017

Vanadium incorporated hexagonal mesoporous aluminophosphate characteristic of MCM-41 has been synthesized. Characterization of the catalyst has been done by using low angle XRD, N2 adsorption, UVVIS DRS, thermal analysis, XPS and ESR spectroscopy. These techniques confirm the presence of vanadium in both +4 and +5 oxidation states in the calcined material. Liquid phase partial oxidation of toluene has been carried out on V-AlPO using 70% TBHP and 30% H2O2 as oxidants. When 70% TBHP is used as an oxidant, it resulted in side chain oxidation giving rise to aldehyde/acid where as with 30% H2O2, side chain as well as ring oxidation takes place. Catalytic activity of V-AlPO has been compared with that of VMCM-48 and other vanadium containing catalytic systems. It has been observed that mesoporous V-AlPO shows higher conversion and is also selective towards side chain oxidation products. The higher conversion of V-AlPO over V-MCM-48 has been attributed to the stabilization of the active V+5/+4 species in AlPO framework as compared to silicate analogue.
Quantitative Methods and Inferential Statistics: Capacity and Development for Librarians
Authors: Doucette Lise
Published: June 2017

No abstract.
Informing Evidence Based Decisions: Usage Statistics for Online Journal Databases
Authors: Botchkarev Alexei
Published: June 2017

Abstract

Objective – The primary objective was to examine online journal database usage statistics for a provincial ministry of health in the context of evidence based decision-making. In addition, the study highlights implementation of the Journal Access Centre (JAC) that is housed and powered by the Ontario Ministry of Health and Long-Term Care (MOHLTC) to inform health systems policy-making.

Methods – This was a prospective case study using descriptive analysis of the JAC usage statistics of journal articles from January 2009 to September 2013.

Results – JAC enables ministry employees to access approximately 12,000 journals with full-text articles. JAC usage statistics for the 2011-2012 calendar years demonstrate a steady level of activity in terms of searches, with monthly averages of 5,129. In 2009-2013, a total of 4,759 journal titles were accessed including 1,675 journals with full-text. Usage statistics demonstrate that the actual consumption was over 12,790 full-text downloaded articles or approximately 2,700 articles annually.

Conclusion – JAC’s steady level of activities, revealed by the study, reflects continuous demand for JAC services and products. It testifies that access to online journal databases has become part of routine government knowledge management processes. MOHLTC’s broad area of responsibilities with dynamically changing priorities translates into the diverse information needs of its employees and a large set of required journals. Usage statistics indicate that MOHLTC information needs cannot be mapped to a reasonably compact set of “core” journals with a subsequent subscription to those.
In and Out of the Rabbit Hole: Unpacking the Research Proposal
Authors: Mitchell Marjorie
Published: June 2017

No abstract.
The C-EBLIP Fall Symposium: Librarians as Researchers
Authors: Wilson Virginia
Published: June 2017

No abstract.
Nivel de ruido de los procedimientos clínicos odontológicos
Authors: Lozano Castro Felipe Enrique , Díaz Soriano Ana María , Payano Arcos Jean Carlos Wilmer , Sánchez Rengifo Francisco Isidoro , Ambrocio Barrueto Enma Dajanne , Huapaya Pardavé María del Carmen , Reguera Izquierdo Cristina , Pérez Rojas Andrés Alejandro
Published: June 2017

Objetivos: Determinar el nivel de ruido producido durante los procedimientos clínicos odontológicos en las Áreas de Operatoria dental, Prótesis fija, Endodoncia y Odontopediatría de la Facultad de Odontología de la Universidad Nacional Mayor de San Marcos, Centro Médico Naval y Hospital Nacional Hipólito Unanue. Material y métodos: Se tomó una muestra por conveniencia de 80 registros sonoros de procedimientos clínicos odontológicos en prótesis fija, operatoria dental, odontopediatría y endodoncia usando un sonómetro digital, el cual fue colocado a nivel del oído y a una distancia de 45 cm del procedimiento clínico odontológico. Resultados: Se encontró que el mayor promedio de nivel de ruido a la altura del oído fue en operatoria dental con 83,13 decibeles(dB) y el menor fue en endodoncia con 65,57 dB. A 45 cms., el mayor promedio fue en prótesis fija con 76,99 dB y el menor fue en Endodoncia con 61,62 dB. Conclusiones: Los procedimientos clínicos odontológicos de operatoria dental, prótesis fija, endodoncia y odontopediatría se encontraron dentro de los límites permisibles sonoros del Ministerio de Salud del Perú.
Biología Molecular aplicada a la Estomatología en el siglo XXI:avances, bioética y educación científica.
Authors: Ikeda Artacho María Cristina
Published: June 2017

Este artículo constituye una rápida mirada a los nuevos caminos adoptados por las ciencias biológicas aplicadas a la salud en los últimos tiempos, comentando su impacto en el mundo y, de modo especial, en el ejercicio de la odontología. Inicia con algunos alcances de la biología molecular y biotecnología, incluyendo el impacto de la ingeniería tisular en la cavidad oral; los cambios en el paradigma de la etiología que relaciona las enfermedades orales y sistémicas; se revisan áreas de investigación controversiales como la clonación de seres humanos y el desarrollo de tejidos humanos, hasta llegar a las aplicaciones de la genómica en salud. Se destaca la importancia de analizar el avance de estos procesos, así como su implicancia e impacto en el campo de la ciencias de la vida. La revisión propone un análisis desde la perspectiva bioética y de los derechos humanos, concluyendo con la posición responsable que debe asumir la educación científica.
Does Time Matter? – A Study of Participation of Women in Urban Governance
Authors: Banerjee Riya
Published: June 2017

Time is an important aspect of present day life. Everyone tries to manage time in their daily lives, but women often face many hurdles in this respect. They work in their homes as well as in the public sphere, which doubles their actual workload. Their responsibilities increase further when women are engaged in the field of governance as local representatives. The work of a local representative is considered as a 24×7 thankless job in the Indian context, and women councillors (WCs) have to work just as hard as the men. However, in the domestic sphere, because of gendered nature of household chores, women still tend to do more work than men. Due to this reason, women have to manage their time in order to provide better services to the citizens and ensure that their household duties are completed flawlessly. This paper raises the issues related to such management of time by the elected women in the urban governance of West Bengal. The issues are: first, the duration of work as a councillor and its relation with the honorarium they receive; second, the extent to which their household work hinders their path to creating their identity in urban governance; and third, the degree to which these two activities influence the quality of their leisure time. In 1995, United Nations Development Programme (UNDP) developed a methodology to analyse the value of time based on the time-use activities. This research underpins this methodology to justify the unpaid and underpaid work of the WCs as well as their management of time between indoor and outdoor activities. The primary data was collected by conducting individual interviews with 38 women councillors in the four selected small cities (Darjeeling, Balurghat, Raniganj and Chinsurah) of West Bengal.
Construction of Participatory Surveying System for Specialists and Utilization of Geoportal
Authors: Okajima Yuki , Mitani Yasuhiro , Ikemi Hiro , Djamaluddin Ibrahim ,   Graduate School of Engineering, Kyushu University 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan,   Faculty of Engineering, Kyushu University, Fukuoka, Japan,   Faculty of Engineering, Hasanuddin University, Sulawesi Selatan, Indonesia
Published: June 2017

The 2016 Kumamoto Earthquake occurred in April 2016, causing extensive damage over a wide area. In this research, ICT (Information Communication Technology), geospatial information, and satellite information have been utilized to demonstrate a new mechanism for collecting, analyzing, and sharing damage information using WebGIS as a practical system during the emergency and recovery period of the 2016 Kumamoto Earthquake. In the collection process, damage information over a wide area has been collected in a short period of time using two collection methods: participatory information collection and multiple organization collection. Then, by analyzing the collected damage information, the damage distribution can be obtained. Furthermore, by sharing the damage information using WebGIS, it is possible to share the data quickly and utilize it easily. It is expected that collecting and analyzing damage information from multiple organizations and broadly sharing such information is significant during the emergency and recovery period of a large-scale disaster.
Seed Inorganic Phosphorus Stability and Agronomic Performance of Two Low‐Phytate Soybean Lines Evaluated across Six Southeastern US Environments
Authors: Boehm Jeffrey D. , Walker Forbes R. , Bhandari Hem S. , Kopsell Dean , Pantalone Vincent R.
Published: June 2017

Nondigestible phytate salts that chelate nutritional minerals in the digestive tract of monogastric animals are an unwanted component of soymeal [Glycine max (L.) Merr.] and a documented source of nonpoint phosphorus (P) pollution in the waste stream detrimental to the environment. Lowering soybean phytate levels would ease environmental concerns and improve soymeal mineral bioavailability. In 2013, a field trial consisting of two University of Tennessee low‐phytate (LP) lines (56CX‐1273 and 56CX‐1283) and two high‐yielding check cultivars (‘5002T’ and ‘Osage’) were planted in four row plots in two replications at six Southeastern locations in a randomized complete block design to evaluate the LP lines for agronomic performance, seed quality traits and inorganic P (Pi) stability. Results revealed that there were no significant differences (P > 0.05) for mean seed yield or field emergence (germination) between the two LP lines and the two cultivars. Although the genotype × environmental index linear regression of seed Pi for the two LP lines revealed a slope that was significantly different (P < 0.001) from zero, and therefore not stable across the six environments, the mean Pi concentrations for LP lines 56CX‐1273 (2084.7 μg g−1) and 56CX‐1283 (1744.4 μg g−1) were still about an order of magnitude greater than the means of Osage (185.7 μg g−1) and 5002T (228.0 μg g−1). This study documents that a LP line can produce seed yields statistically equivalent to high‐yielding check cultivars with no germination issues.
Measurement of plane vibrations of orthotropic rotating element in a folding machine
Authors: Kibirkštis E. , Miliūnas V. , Maik V. , Voloshin A. , Ragulskis K. , Ragulskis L.
Published: June 2017

An important problem in the design of printing equipment is measurement of vibrations of rollers and also of their segments in the designed folding machines. Such measurements were carried out in the process of this investigation. Laser displacement head “Microtrack LTC 200-100” was applied during the process of performed measurements. Results from the experiment were obtained and analyzed at the pre-selected positions of the investigated rollers and also of their segments. Vibrational displacements were determined (they have the form of beatings) of the investigated rollers and also of their segments, which originate during the process of rotation. They influence the quality of resulting printing products. Plane stress problem by taking into account orthotropic properties of material is analyzed. Supplementary stiffness, which takes place because of the static loading as a result of action of centrifugal forces, is used in the analyzed model. Eigenmodes are calculated and analyzed.
Strength or force reduction factors for steel buildings: MDOF vs SDOF systems
Authors: Reyes-Salazar Alfredo , Llanes-Tizoc Mario D. , Bojórquez Edén , Rivera-Salas J. Luz , Lopez-Barraza Arturo , Haldar Achintya
Published: June 2017

The nonlinear seismic responses of steel buildings with perimeter moment resisting frames (MRF), modeled as complex 3D MDOF systems, are calculated and the ductility demands, ductility reduction factors and the force reduction factors (R), are studied. Equivalent 3D models with spatial MRF, two-dimensional models, and equivalent SDOF systems (SD), are also considered. Results indicate that the global and local force reduction factors significantly vary from one structural representation to another and that they are much larger for the SD models. One of the reasons for this is that, although there is equivalence between the SD and MDOF models, the dissipated energy and the number of incursions in the inelastic range are significantly larger for the SD models. In addition, while for the SD models total plasticization occurs, for the SAC and EQ models, even for significant yielding, plastic hinges are developed only in a relatively small number of structural members; therefore, using the R factors of the SD models may be conservative. According to the results obtained in this research for the more realistic representation of the steel building (3D), the value of 8 suggested in many codes for the R factor for ductile MRF cannot be justified. It is only justified for the SD systems. The implication of this is that non-conservative designs may be obtained if so large value is used. More transparence is needed in the codes regarding the magnitude and the components involved in the R factor.
Vibration signal analysis and fault diagnosis of bogies of the high-speed train based on deep neural networks
Authors: Zhao Yang , Guo Zheng Hong , Yan Jian Ming
Published: June 2017

Bogie is the most important component in a running gear of a high-speed train. Advantages and disadvantages of its mechanical performance can directly influence safety and comfort of train running. Failure of key components on the bogie always leads to serious vibration and performance decrease of each train component, and can even cause serious accidents such as de-railing and overturning. Therefore, it is very necessary to adopt an efficient and accurate intelligent diagnosis method. Based on the previous researches, the paper proposed a deep neural network method to make systematic and complete diagnosis of bogie faults. Firstly, a deep neural network was used to diagnose standard bearing system faults, and the results were compared with those obtained by traditional neural networks such as FANN (Firefly Artificial Neural Network), PSONN (Particle Swarm Optimization Neural Network) and GANN (Genetic Artificial Neural Network) to highlight advantages of the deep neural network. Then, based on vibration data extracted by a multi-body dynamic model of the high-speed train, the deep neural network was used to diagnose 8 conditions of the bogie systematically. The fault diagnosis was repeated for 10 times. Results obtained for the 10 times present obvious advantages of the deep neural network which could obtain the average diagnosis rate of 98.3 % and had the diagnosis standard deviation of 0.71. Finally, training process of fault diagnosis was extracted. Results show that the deep neural network could converge to a critical value at the quickest speed. All the above analysis results indicate that the deep neural network has irreplaceable advantages in intelligent diagnosis of bogies.
Vibroactivity analysis of a dual fuel diesel engine based on the knock sensor signal and measuring pressure in the combustion chamber
Authors: Szczurowski Krzysztof , Kurkus Łukasz , Walczak Damian , Zieliński Łukasz
Published: June 2017

A study conducted by a team of authors attempts to identify the occurrence of knocking based on the vibro-acoustic signal from the knock sensor and the signal from the pressure sensor glow plug (PSG). The reason the authors decided to discuss the issue is increasing interest in the use of information contained in the generated vibration and acoustic emissions as well as reducing acoustic emissions as one of the environmental threats. The adopted form of experiment and analysis enables determining the validity of testing of NVH multifuel engines. Information based on the vibro-acoustic signal allows to determine the qualitative and quantitative occurrence of the phenomenon of knocking in case of proper analysis. Both the energy spectrum of the vibration and the summation value of the successive bands of the spectrum confirm the occurrence of knock resulting from the analysis of the pressure in the combustion chamber and allow to relate to its intensity.
Effects of pile rows on vibration reduction in nearly saturated soil
Authors: Ding Guangya , Wang Jun , Sun Fan
Published: June 2017

This paper presents an analysis about the vibration reduction effects by a barrier in a nearly saturated soil medium. The barrier is assumed to consist in an arbitrary distribution of parallel cylindrical piles embedded in an infinite nearly saturated soil. Based on the equations governing the motion of nearly saturated soil, the complex wave numbers and amplitude ratios between the liquid phase and solid phase are first derived according to the Helmholtz decomposition theorem. With the aid of the Graff’s addition theorem, the unknown multiple complex scattering coefficients by an arbitrary configuration of piles as barriers are determined by taking an advantage of the boundary conditions at pile-soil interfaces and the linear independence of trigonometric functions. Then the corresponding expressions for the nearly saturated soil displacements at both sides of the pile rows can be obtained. The numerical results show that soil saturation degree and permeability exert significant influences on the isolation effectiveness of pile rows, and that the distance between neighboring rows is crucial for the isolation effectiveness. The isolation rules can provide useful guidelines to the design of pile rows as barriers in nearly saturated soil.
The effect of an orifice plate with different orifice numbers and shapes on the damping characteristics of a dual-chamber air spring
Authors: Zeng Xiaohui , Zhang Liang , Yu Fajun , Zhou Jifu
Published: June 2017

A dual-chamber air spring is an important vibration absorber. The shape and number of damping orifices directly influence the damping characteristics of dual-chamber air springs. The study investigates the application of damping characteristics of gas-liquid coupling dual-chamber air springs to mitigate the motion of a marine floating platform. An experimental method is used to analyze the influence of changes in the orifice number and shape on the damping characteristics of dual-chamber air springs given the same opening area. To analyze the effect of various orifice shapes, the study adopts a non-dimensional number to measure the image complexity, namely area/perimeter2 ratio. Additionally, two non-dimensional numbers are considered simultaneously, namely the orifice number and tightness factor, and the influence of changes in the orifice number and orifice position layout on damping characteristics of circular and square orifices is investigated, given the same opening area. The damping cloud map and a formula to calculate the damping for the gas-liquid coupling dual-chamber air springs are obtained by analyzing the experimental data. The proposed formula can be used to quickly calculate the damping coefficients of the dual-chamber air springs when the number and position layout of the orifices are known.
Acoustic characteristic analysis of the non-smooth surface fan of off-highway machinery
Authors: Yang Liu , Qin Si Cheng , Liu Liu
Published: June 2017

Cooling fan, as an important component of the Off-Highway machinery cooling system, is becoming the largest noise source when it is rotating fast. So, it is the key to suppress the noise from cooling fan in reducing noise in the Off-Highway machinery. In this study, we designed a kind of non-smooth surface cooling fan which could reduce noise strongly, by adding two kinds of non- smooth features on the smooth surface of the forward-skewed fan, and also combining the CFD virtual wind tunnel simulation with bench test to analyze features of flow field and noise. Comparing the experimental data shows that the new fan effectively suppressed the vortex of the power cabin; the effect to reduce noise is proportional to the rotate speed, and with the rated speed, the total noise is reduced 20.9 % and the peak noise is reduced 21.5 % than the original arc bending plate fan in wheel loaders.
Experimental research and numerical analysis on vibroacoustic characteristics of the laminated composite plate and its application in high-speed trains
Authors: Wu Jin Mei
Published: June 2017

This paper firstly used the finite element method to study the impact of air coupling on the structural radiation noise of thin plates and conducted a comparative analysis on the vibration noise of thin plates in the water and air. Results showed that coupling effect and medium property had an obvious influence on the radiation noise of thin plates, and these factors must be considered. Secondly, this paper proposed laminated plates based on the single-layered thin plate. The related experiment of laminated plates was conducted and compared with the computational result to verify its reliability. As an important parameter of laminated plates, laying angle can change the structural stiffness of laminated plates and mechanical properties. Therefore, based on the verified computation model, this paper studied the radiation noise of laminated plates through changing the laying angle of laminated plates, improved the vibration noise of laminated plates through applying control forces. As a result, a laminated plate with the optimal performance can be obtained. Finally, laminated composite plates were applied to the inner surface of panels which had made greater acoustic contributions to high-speed trains and controlled the vibration noise of high-speed trains through applying control forces. Results showed that the peak noise of high-speed trains was obviously improved at multiple frequencies and total sound power levels reduced by 23.1 dB.
Dynamic problem in 3D thermoelastic half-space with rotation in context of G-N type II and type III
Authors: Santra S. , Lahiri A. , Das N. C.
Published: June 2017

In this paper, comparison between G-N model of type II (without energy dissipation) and G-N model of type III (with energy dissipation) has been shown in a three dimensional thermoelastic half space with rotation subjected to time dependent heat source on the traction free boundary. Eigenvalue methodology has been adopted to solve the equations resulting from the application of the Normal mode analysis to the non-dimensional coupled equations. Variation of the numerically computed values of thermal stresses and temperature with and without rotation has been illustrated graphically.
AS POLÍTICAS EDUCACIONAIS E O ENSINO EM QUESTÃO
Authors: Basílio Guilherme
Published: June 2017

O presente artigo intitulado, As políticas educacionais e o ensino em questão, analisa as políticas educativas; a relação entre o sistema de ensino e as escolas e o contributo das instituições internacionais na organização e gestão da educação em Moçambique. Para esta discussão, parte-se de pressusposto de que as políticas educativas reflectem as intenções e as acções do governo no âmbito da educação e as escolas são tomadas como centro de concretização das políticas educativas. As escolas tornam-se espaço de convergência entre o sistema educativo e as práticas pedagógicas. Um estudo sobre a relação entre a escola e o sistema educativo permite compreender o funcionamento das escolas enquanto instituições políticas e educadoras e o sistema nacional de educação que expressa politicamente as intenções do Estado. Entende-se que discutir sobre as políticas educativas significa falar de reforma educacional contida nos documentos legais que supõe uma reorganização dos diversos níveis de ensino, dos currículos, das políticas e das escolas, da melhoria da qualidade de ensino. O artigo analisa também o impacto das instituições internacionais como o Banco Mundial na definição e na implementação das políticas educativas e os seus financiamentos no sector educacional em Moçambique.
Nano-Scale Movement Induced In Graphene Ripples by Multi-Probe Microscopy
Authors: Alyobi Mona , Barnett Chris , Cobley Richard
Published: June 2017

Abstract— An Omicron low temperature multi-probe technique is used for manipulation of mechanically exfoliated suspended and attached graphene sheets on SiO2 substrates. Scanning electron microscopy (SEM) and Raman spectroscopy are used to detect the graphene sheets and determine their thicknesses and quality, respectively. The interaction of the etched tungsten tip with the graphene is used to lift and release the sheet and induce artificial ripples. Both suspended and attached sheets onto the substrates show different behaviour in response to bias voltage.

IndexTerms: graphene,multi-probe microscopy, ripples.
Stability Analysis of a High Stone Retaining Wall: A Case of Eskipazar/Turkey
Authors: Keskin İnan
Published: June 2017

Abstract— The use of natural stones in retaining wall has been a tradition and common practice throughout human history. Stone retaining walls are load bearing retaining walls, which have long been analyzed by considering the equilibrium of forces and moments applied to the wall treated as a rigid solid. Stone retaining walls can be designed for the provision of some slope stability. This paper provides a review of stability analysis of high stone retaining walls. This paper provides a review of stability analysis of high stone retaining walls using Geo5 software. The stone retaining wall examined in this study is located in Karabük (Turkey). The study area was located near of the North Anatolian Fault Line (NAF) which are the most important fault lines in Turkey. For that reason, the stability analyzes were carried out considering the earthquake situation. The stone retaining wall is made of traverten type rock. This rock is a commonly observed rock type. The height of the analyzed wall is 10 m. A 5 kPa uniformly distributed load was adopted in the stability analysis to accommodate for the heaviest loading condition during construction. The analysis with Geo5 found a wall factor of safety 1.78. At this value, it shows that the wall will stable although it is very high.

 

Index Terms— Stone masonry walls, slope stability, Geo5, Turkey
Geophysical Investigation of Groundwater Level Using Vertical Electrical Sounding (A Case Study of Ewu in Edo State Nigeria)
Authors: Gilbert Idiegbe Onoriode , Lawrence Atumah Oyibo
Published: June 2017

Abstract- In this research work, four Vertical Electrical Soundings (VES) were carried out in Ewu Town at various locations: Eguare-Ewu, Idunwele-Ewu, Flour Mill Road-Ewu and Eko-Ewu using the ABEM terrameter, by employing the Schlumberger electrode configuration system to determine the level of groundwater.  From the analysis of field data and results of computer iteration, a maximum of four geoelectric layers were obtained.  The first layer of geoelectric section was the lateritic top soil with thickness of 1.21m and 11.1m, for VES 1 and VES 2, with apparent resistivity of 438Ωm and 183Ωm.  The possible aquiferous zone for sustaining groundwater are within the second and third layers for VES 1 and the fourth layer for VES 2, at a depth of 2.67m – 47m and infinity respectively.  The apparent resistivity of the aquiferous layers of VES 1 and VES 2 are 797Ωm and 362Ωm respectively, which is fine sand layer.  The apparent resistivity of the aquiferous layers of VES 3 and VES 4 are 5511Ωm and 129Ωm respectively with infinity thickness.

 Key words: Geoelectric layer, aquiferous layers, groundwater
A Survey of Collaborative Filtering Recommender Algorithms and Their Evaluation Metrics
Authors: Jalili Mahdi
Published: June 2017

Abstract—Recommender systems are often used to provide useful recommendations for users. They use previous history of the users-items interactions, e.g. purchase history and/or users rating on items, to provide a suitable recommendation list for any target user. They may also use contextual information available about items and users. Collaborative filtering algorithm and its variants are the most successful recommendation algorithms that have been applied to many applications. Collaborative filtering method works by first finding the most similar users (or items) for a target user (or items), and then building the recommendation lists. There is no unique evaluation metric to assess the performance of recommendations systems, and one often choose the one most appropriate for the application in hand. This paper compares the performance of a number of well-known collaborative filtering algorithms on movie recommendation. To this end, a number of performance criteria are used to test the algorithms. The algorithms are ranked for each evaluation metric and a rank aggregation method is used to determine the wining algorithm. Our experiments show that the probabilistic matrix factorization has the top performance in this dataset, followed by item-based and user-based collaborative filtering. Non-negative matrix factorization and Slope 1 has the worst performance among the considered algorithms.

Keywords—Social networks analysis and mining, big data, recommender systems, collaborative filtering.