bluuebunny/crossref_metadata_2025 huggingface dataset:
Avances en el análisis del material leñoso en ríos: incorporación, transporte e influencia en el riesgo por inundaciones
Authors: Ruiz-Villanueva Virginia , Díez-Herrero Andrés , Bodoque del Pozo José María , Bladé Ernest
Published: December 2015

El transporte y depósito de restos de vegetación en los ríos (troncos o árboles completos, ramas y raíces, material leñoso en general) puede agravar las consecuencias de los eventos de avenida e inundación e incrementar su peligrosidad potencial. Este material puede afectar especialmente a infraestructuras como drenajes, puentes, etc., que intersectan ríos en cuencas montañosas forestadas. Una práctica muy extendida y aceptada hasta hace pocos años ha sido la extracción sistemática de este material leñoso de los cauces como medida de prevención. Sin embargo, se ha demostrado que esta práctica puede resultar inútil (el material es transportado y depositado tras cada inundación), e incluso no beneficiosa para el equilibrio natural del sistema fluvial a largo plazo. Por lo tanto, es necesario gestionar la presencia del material leñoso en los ríos, e integrar su estudio en los análisis de peligrosidad y riesgo por inundación. Sin embargo, en España existen escasos trabajos en los que el material leñoso haya sido objetivo fundamental de estudio y, por tanto, tampoco existe demasiada bibliografía relacionada con esta temática. En este trabajo, se presenta una exhaustiva revisión de los principales métodos empleados para evaluar la peligrosidad de las avenidas e inundaciones que incorporan material leñoso. Asimismo, se propone una metodología integral para estudiar esta carga de detritos leñosos en ríos. En primer lugar, hay que caracterizar la dinámica de incorporación de este material a los cauces. Para ello, es necesario establecer las áreas contribuyentes que pueden aportar el material a los cursos de agua y los procesos que lo incorporan. De este modo, es posible estimar el volumen de madera potencialmente disponible, para lo cual se presenta un modelo numérico que permite la simulación del transporte de carga leñosa junto con la hidrodinámica. Asimismo, se analiza la incidencia de la carga flotante en la peligrosidad y el riesgo por inundaciones. Esta propuesta metodológica se ha puesto en práctica en diversos ríos de la Sierra de Gredos (Sistema Central), presentándose una síntesis de algunos de los resultados principales obtenidos. Como conclusión fundamental, se puede afirmar que una correcta gestión de los ríos requiere a su vez de una apropiada gestión de la vegetación de ribera y el material leñoso transportado y depositado en los mismos; y esta gestión debe encontrar el compromiso para mantener las buenas condiciones ecológicas, reduciendo en lo posible los potenciales riesgos.
Ratio LE para el ajuste de perfiles longitudinales en cursos fluviales de montaña. Aplicación a la cuenca del Río Almáchar (Málaga, España)
Authors: Rodrigo Comino Jesús , Senciales José María
Published: December 2015

La ratio LE (Logarítmica exponencial) puede ser una herramienta geomorfológica eficaz para ajustar perfiles longitudinales de cuencas fluviales montuosas de pequeña extensión. Debe ser aplicada utilizando la altitud como variable independiente. Para el río Almáchar de la provincia de Málaga (España), con elevadas pendientes y una vocación agrícola fundamentalmente vitivinícola, se ha conseguido un ajuste final de R2=0,96. Estos cálculos permiten detectar y cuantificar en qué intervalos se han producido anomalías o rupturas (knickpoints) de origen geomorfológico y/o geológico. Para este caso, los tramos con mayores diferencias entre el perfil real y el ajustado fueron los intervalos de altitud comprendidos entre 200-300 m y mayores a 500 m.s.n.m. Los resultados muestran una correlación directa entre la disminución de las anomalías con la aparición de vegetación natural (0,86), y un aumento de ellas con el incremento de los cultivos de la vid y la construcción de caminos.
Investigación paleoantropológica de los fósiles neandertales de El Sidrón (Asturias, España)
Authors: Rosas Gonzalez Antonio , Estalrrich Almudena , García-Tabernero Antonio , Huguet Rosa , Lalueza-Fox Carles , Ríos Luis , Bastir Markus , Fernández-Cascón Beatriz , Perez-Criado Laura , Rodriguez-Perez Francisco Javier , Ferrando Anabel , Fernández-Cerezo Susana , Sierra Elena , De la Rasilla Marco
Published: December 2015

Tras 13 campañas de excavación metódica, y una vez concluidos definitivamente los trabajos de campo en la Galería del Osario de la cueva de El Sidrón (Asturias, España), se presenta una breve evaluación de las investigaciones paleoantropológicas realizadas. Los restos neandertales recuperados ascienden a más de 2550, a los que hay que sumar las 400 piezas de industria lítica musteriense y los muy escasos restos de fauna; asociación que hace de este yacimiento un lugar muy singular. Análisis sedimentológicos, tafonómicos y estructurales del karst aclaran que el depósito fosilífero se encuentra en posición secundaria y procede, por desplazamiento en masa, de una galería/abrigo de un nivel superior. Todas las partes del esqueleto están representadas y se han identificado 13 individuos: 7 adultos (3 masculinos, 4 femeninos), 3 adolescentes (2 masculinos, 1 femenino), 2 juveniles masculinos y un infantil. En la actualidad, la colección de El Sidrón constituye la muestra de neandertales más numerosa y diversa de la Península Ibérica y permite abordar estudios sistémicos sobre el tempo y modo de aparición de los caracteres derivados en el linaje neandertal. El amplio programa de investigación paleobiológica emprendido abarca los diferentes niveles de organización biológica, desde los anatómicos macroscópicos al molecular. En este último destaca especialmente la extracción de secuencias de ADN, con participación de El Sidrón en los proyectos genoma y exoma neandertal, además de la caracterización de los haplotipos de ADN mitocondrial de 12 individuos. Los resultados genéticos, ratificados por datos osteológicos, definen a los neandertales de El Sidrón como un grupo homogéneo, con estrechos lazos familiares entre sus individuos. Finalmente, las numerosas evidencias del tratamiento antrópico de los restos hacen de El Sidrón un ejemplo paradigmático de prácticas de canibalismo entre los neandertales.
RELAÇÃO ENTRE COBERTURA VEGETAL E EROSÃO EM PARCELAS REPRESENTATIVAS DE CERRADO
Authors: Costa Yasmmin Tadeu , Rodrigues Sílvio Carlos
Published: December 2015

O objetivo deste trabalho foi levantar dados sobre como a cobertura vegetal auxilia e interfere nos processos erosivos, procurando compreender, por meio de análises quantitativas, a relação entre estes dois parâmetros. Para isso utilizou-se dados de densidade de cobertura vegetal, escoamento superficial e perda de solo que foram obtidos através de análise foto-comparativa através do programa ENVI, coletas semanais do volume total do escoamento superficial e filtragens seguidas de pesagem para a perda de solo, respectivamente. Tais dados foram registrados em cinco parcelas com características de cobertura vegetal diferentes no período de Fevereiro de2014 aAbril de 2015, localizadas no setor sudeste do município de Uberlândia – MG, inseridas no bioma Cerrado. A diferenciação nos resultados das parcelas indicam que a característica da cobertura vegetal interfere na perda de solo, pois a parcela com densa cobertura de espécies arbustivas mostrou valores significativos no escoamento superficial, porém, com baixa perda de solo, a espécie arbórea com pouca densidade de cobertura do solo apresentou também grandes índices de escoamento superficial e obteve muita perda de solo. Já as parcelas com espécies herbáceas se mostraram sensíveis aos índices de precipitação.
Prospects of application of nanostructured heterophase polyfunctional composite materials in aero-engine manufacturing
Authors:   Central Institute of Aviation Motors named after P.I. Baranov, Nizovtsev V. , Klimov D. ,   Central Institute of Aviation Motors named after P.I. Baranov, Bortnikov A. ,   Central Institute of Aviation Motors named after P.I. Baranov, Nizovtsevа O. ,   Central Institute of Aviation Motors named after P.I. Baranov
Published: December 2015

The article provides a brief overview of the features and applications of developed and investigated nanostructured superhard composite materials and coatings on their basis. The research carried out makes it possible to draw a conclusion of great prospects of using nanostructured composite materials on the basis of carbides, carbonitrides and diborides of transitional and refractory metals for aerospace objects. The use of new composite structural materials is the top priority in the area of improving technical and economic parameters of gas turbine engines. These materials are superior to traditional materials by their basic physical and mechanical properties several-fold. Numerous studies in this field indicate that the greatest progress in the development of new advanced structural composite materials can be expected on the way to creating materials based on polymeric, metallic, intermetallic, and ceramic matrices. At present, there is a distinct trend towards the creation of units and assemblies of multiple-start gas turbine engines and power plants with longer life and increased durability. Research in the area of using new-generation composite materials is carried out in almost all developed countries, primarily in the United States and Japan.
Dynamic behaviour of high- bypass- ratio turbofan carbon fiber-reinforced plastic blade ubder unsteady airloads
Authors:   Central Institute of Aviation Motors named after P.I. Baranov, Buyukli T. , Fedorchenko Yu. ,   Central Institute of Aviation Motors named after P.I. Baranov, Shorstov V. ,   Central Institute of Aviation Motors named after P.I. Baranov
Published: December 2015

The dynamic behavior of vibrating blades of an advanced high- bypass- ratio turbojet engine wide-chord fan under unsteady air loads has been researched. Unsteady air loads occur because of the flow around the impeller situated in the air inlet in the case of strong crosswind. These loads affect the blade dynamic behavior and could lead to increasing of the blade vibration amplitude and the stress in the blades. Blade dynamic behavior is investigated on the basis of 3D high-level gas-dynamic and finite-element models. The gas-dynamic model takes into account unsteady viscous 3D air flows. The strength model takes into account geometrical non-linearity and anisotropy of the composite material. The Cobra software package developed at CIAM and based on Godunov’s method is used for aerodynamic research and obtaining unsteady aerodynamic loads. The ANSYS package of finite-element analysis is used to solve the mechanical problem. The paper deals with both forced vibrations of a blade under given cyclic aerodynamic loads and vibrations with account for the fluid-structure interaction (FSI) of the structure and the flow of titanium and carbon-fiber-reinforced blades. The results of investigations have been compared. The differences between the results of solving the task of forced vibrations and vibrations with FSI, as well as the differences between the results obtained for blades of the same configuration but made of different materials are presented.
Calculation and experimental investigations on the efficiency of various ways of vibration damping of jet engine parts
Authors:   Central institute of aviation motors named after P.I. Baranov, Shorr B. , Serebryakov N. ,   Central institute of aviation motors named after P.I. Baranov, Stadnikov A. ,   Central institute of aviation motors named after P.I. Baranov, Shadrin D. ,   Central institute of aviation motors named after P.I. Baranov, Rudenok E. ,   Central institute of aviation motors named after P.I. Baranov, Kanackin A. ,   Central institute of aviation motors named after P.I. Baranov, Bortnikov A. ,   Central institute of aviation motors named after P.I. Baranov
Published: December 2015

The results of investigations in experimental and computational estimation of the efficiency of engine part vibration damping using different ways of damping carried out at CIAM are presented. Vibration tests have been carried out on a dynamic simulator for a turbine stage with dampers of various masses. The damper with the optimal mass and stiffness is specified according to the results of blade strain-gaging. The possibility of efficient damping of compressor blade vibration using thin damping coatings is shown. A method of damping a fan blade without a root platform is presented. The efficiency of the method proposed has been analyzed and experimentally confirmed using a plate imitating the fan blade. The possibility of active damping of gas turbine engine part vibrations using piezoelectric elements has been considered, and the potential efficiency of the method has been experimentally confirmed. Reducing resonant stresses in a thin titanium plate is an example of applying the method.
Tribodiagnostics of aircraft reduction gear elements
Authors:   Central Institute of Aviation Motors named after P.I. Baranov, Shabalinskaia L. , Golovanov V. ,   Central Institute of Aviation Motors named after P.I. Baranov, Bubnova E. ,   Central Institute of Aviation Motors named after P.I. Baranov, Milinis L. ,   Central Institute of Aviation Motors named after P.I. Baranov, Prodanov E. ,   Joint Stock Company «Klimov»
Published: December 2015

The paper is devoted to the tribodiagnostics of the technical condition of aircraft reduction gear elements (exemplified by the aircraft gear box). The following methods of testing the parameters of wear products are used: atomic-emission spectroscopy (ASTM D 6595-00), ferrography (ASTM D7690 – 11), dispersion and morphological analysis (ASTM D – 6786 – 002). Experimental and design increased and admissible-limit values of concentrations of wear product elements and particles in the lubricant oil have been determined by statistical analysis of 120 lubricant samples selected in the process of rig testing of ten gears of five KSA-33M accessory gear boxes. Statistical analysis of the samples has been carried out to determine the maximum permissible, increased and normal values of diagnostic parameters of wear and to carry out their standardization. As a result, design values of increased concentration (IC) and maximum permissible concentration (MPC) of wear elements and particles in the lubricant oil of the KSA-33M accessory gear box have been found. A method of tribodiagnostics of components of the KSA-33M accessory gear box has been developed on the basis of the research carried out and the data obtained earlier. The method makes it possible to assess the technical condition of the part without its disassembly and removal from the aircraft, and, in case of any deviations from the norm, to predict its running hours before the state of emergency.
Application of the invariant plastic flow theory for mathematical modeling of the processes of testing specimens under complex elastic-plastic deformation
Authors:   Central Institute of Aviation Motors named after P.I. Baranov, Temis Y. , Alkhimov D. ,   Moscow State University of Mechanical Engineering (MAMI), Martynova A. ,   Central Institute of Aviation Motors named after P.I. Baranov
Published: December 2015

The invariant plastic flow theory is applied for modeling the processes of testing thin-walled tubular steel specimens under complex elastic-plastic deformation. A software package for calculating simple and complex paths of deformation of thin-walled tubular specimens and analyzing the results obtained was developed for a model with translation and isotropic hardening, a combination of Kadashevich-Novozhilov and Arutyunyan-Vakulenko models. The errors arising in the course of numerical modeling of the deformation process beyond the elastic area are compensated by the correction algorithm that makes it possible to return to the loading hypersurface at each stage of calculation. A number of numerical experiments dealing with testing tubular steel 40Х16Н9Г2С specimens were conducted. The model parameters were chosen according to the data of repeated loading. The results of numerical stimulation of the processes of cyclical twist of the specimens, proportional loading, complex two-section and multi-section deformation paths, as well as the process of curvilinear deformation path in the form of concentric circles are presented. The observance of the principle of delay of vector and scalar properties is demonstrated, two-section deformation paths with different angles of fracture taken as an example. The numerical results are compared with the experimental data.
New possibilities of using spin rigs to provide gas turbine engine strength reliability
Authors:   Central Institute of Aviation Motors named after P.I. Baranov, Nozhnitsky Yu. , Fedina Yu. ,   Central Institute of Aviation Motors named after P.I. Baranov, Shadrin D. ,   Central Institute of Aviation Motors named after P.I. Baranov, Servetnik A. ,   Central Institute of Aviation Motors named after P.I. Baranov, Baluev B. ,   Central Institute of Aviation Motors named after P.I. Baranov, Kanachkin A. ,   Central Institute of Aviation Motors named after P.I. Baranov, Lepeshkin A. ,   Central Institute of Aviation Motors named after P.I. Baranov, Tomashev A. ,   Central Institute of Aviation Motors named after P.I. Baranov, Chernyshev S. ,   Central Institute of Aviation Motors named after P.I. Baranov
Published: December 2015

The main tasks of using spin rigs for carrying out certification, engineering and technological tests of gas turbine engine parts and assemblies are formulated. Specific design features of spin rigs are described in the paper. The main characteristics of the spin rigs used at CIAM are presented. The peculiarities of carrying out different tests using spin rigs and the main requirements for rigs are discussed. Examples of using spin rigs for carrying out tests are given. Examples of using the rigs are given, among them are tests intended to confirm the rotor load capacity or technological hardening of the rotor material; equivalent-cyclic tests to confirm the rotor life; investigation of the vibration properties of rotating parts (optimization of structural damping of vibrations and specifying high-cycle fatigue of rotating blades, etc.); tests carried out to confirm the containment of rotor fragments in the engine casing and to determine the rotor integrity under the impact of bird or other foreign objects sucked in the engine gas-air flow duct. The necessity of combining spin rig tests with calculations and physical investigations is shown. The main directions of updating spin rigs are considered. In particular, the necessity of developing rigs for different tests of engine fans with high bypass ratios; perfecting rigs and testing procedures for high-cycle fatigue investigations of rotating blades; producing the equipment for thermal cycling tests of rotor parts, especially parts made of composite or ceramic materials; investigation of vibrations in the conditions of rotor-stator contact; improvement of hardware and methods.
Experimental design of a device for bird strike bench tests of non-rotating fan blades
Authors:   Central Institute of Aviation Motors named after P.I. Baranov, Shorr B. , Matsarenko V. ,   Central Institute of Aviation Motors named after P.I. Baranov, Serebryakov N. ,   Central Institute of Aviation Motors named after P.I. Baranov
Published: December 2015

Requirements on the efficiency and safety of fan bird strike bench tests by throwing birds against non-rotating blades are discussed, including the requirements for providing the bird strike velocity, the installation of blades at the required angle of attack relative to the bird, the requirements for the strength of the parts of the device and its overhaulability. Structural features of the device developed at CIAM are outlined in the paper. The device comprises two main parts: a disk model sector for blade installation and a rigid framework. The model disk can be turned relative to the framework and rigidly fixed in this position. The model disk sector is a solid part imitating part of the disk rim with shaped grooves for blade roots. The framework represents a set of supporting plates with peripheral slots for additional support using rolled section. Strength analysis of the device units operating under the action of heavy short-term impact loads is carried out by the results of finite-element 3D calculations. The device has been successfully used for bench tests during which large birds were being thrown against the block of three fan blades.
CIAM’s scientific school of strength and its ties with Samara aerospace cluster (for the 85 th anniversary of CIAM’s foundation)
Authors: Nozhnitskiy Yu. A. , Belousov A. I. , Kotcherov E. P.
Published: December 2015

The role of Central Institute of Aviation Motors (CIAM) as the leading scientific-research institute in the system of provision of the required dynamic and strength parameters of aircraft engines developed in the country is shown in the paper. Principles and traditions of the CIAMs scientific strength school as applied to solving practical problems, establishing the causes of defects and working out specific certain recommendations on the basis of fundamental and engineering approaches are discussed. The fact that CIAM brings together engineers and researchers, as well as employees of industrial enterprises, universities, academic and branch institutes, research institutions of the Ministry of Defense and civil aviation, working in close contact with them, is a specific feature of the CIAMs scientific strength school. The role of the outstanding scientists I. Sh. Neiman, S. V. Serencen, R. S. Kinasoshvili, I.A. Birger in the forming and development of the CIAMs scientific strength school is also shown. A wide range of subjects dealing with the study of aircraft engine dynamics with an appropriate combination of theoretical, computational and experimental investigations in the area of creating and expanding the unique research-and-trial facilities for strength testing of engines and their assemblies and systems is noted. Much attention is given to conversion programs on ground-based application of gas-turbine engines including the development of Russian and International regulatory documents. Special emphasis is placed on close ties between the CIAMs strength specialists with Samaras aircraft engine manufacturers and the scientific strength school of CIAM and Samaras aerospace cluster, as well as the outstanding role of academician N.D. Kuznetsov in the development and strengthening of these ties.
The Brian Spurett Oration 2015: The Critical Partnership In Reproductive Health
Authors: Baravilala Wame
Published: December 2015

What has impressed me much about PSRH, especially after almost two decades of existence, is how the organisation is able to bring together doctors, midwives, nurses and others who work in reproductive health (including women’s and neonatal health) in the Pacific to meet, learn and exchange ideas and perspectives at least during these biennial conferences. For this oration I wanted to explore the partnership between midwives and doctors in the Pacific, ask a few questions and to determine if the relationship is one of equals or of non-equals. I felt the end of the second decade of PSRH’s existence should allow us the space to examine these issues dispassionately and with maturity as we look forward to another decade of development.
The Percentage of Women with Heavy Menstrual Bleeding Offered the Mirena IUS Prior to Hysterectomy
Authors: Matthews Christina Joy , Stevenson Samantha Jane
Published: December 2015

Heavy menstrual bleeding (HMB) is common and a significant health care burden. The Mirena Intra-Uterine System (IUS) is the superior medical therapy with a comparable improvement in patients’ quality of life to most surgical therapies. Hysterectomy is the definitive treatment but carries higher risks. This audit found that 78% of patients who underwent a hysterectomy over a one-year period at Counties Manukau District Health Board (CMDHB) were offered a Mirena prior to their surgery. This is below our standard of 100%. This result may be underestimated due to insufficient documentation.
Quality intrapartum care and partnerships
Authors: Ekeroma Alec Joseph
Published: December 2015

And that is where our biggest problem with pregnancy and intrapartum care lies in the Pacific – there is an outrageous underinvestment in training opportunities to increase the numbers of nurses, midwives and doctors. We simply do not have enough nurses, midwives and doctors to have engaging discussions on relationships and guaranteeing every woman in labour has a skilled health personnel practitioner. In 2011, it was estimated that 5000 newborns and 1500 women died in childbirth in PNG per annum and there were only 152 practicing midwives.5 Australian government investment in capacity building has seen 500 midwives trained in PNG in the last four years and a paper from the University of Technology Sydney team tasked with building capacity is published in this issue.
Knowledge, Attitude, Practice and Barriers regarding cervical cancer and its screening using Pap smear, in rural women of Ba, Lautoka and Nadi, Fiji.
Authors: Naidu Swaran , Heller Gillian , Qalomaiwasa George , Naidu Sheetal , Gyaneshwar Rajat
Published: December 2015

Background: Fiji has a high rate of cervical cancer, which is the second most common cause of cancer deaths in women in the country. Less than 10% of women are screened for cervical cancer in Fiji.In this paper we report the result of a study on Knowledge, Attitude, Practice and Barriers (KAPB) to cervical cancer and its screening with Pap smears, conducted on 1505 rural women in Fiji.

Objectives: To assess the knowledge, attitudes, practice and barriers to cervical cancer and it’s screening with Pap smears in rural women of Ba, Lautoka and Nadi, in Fiji.

Methods: Structured questionnaires were administered to women presenting to a rural outreach Reproductive Health education and clinics, by trained health educators to ascertain their Knowledge, Attitudes, Practice and Barriers to cervical cancer and its screening with Pap smears.

Results: Seventy two percent of rural women had no knowledge of cervical cancer and 80% had no knowledge of the risk factors of cervical cancer. Lack of knowledge was significantly different for age groups (p=0.006), education levels and employment status(p<0.001) and ethnicity  (p=0.022). Those groups with lowest knowledge were teenagers (18 to 19 years); those with less education; and iTaukei respondents. Of the respondents who had at least some knowledge of the Pap smear, 75% had had a Pap test. Of those who had no knowledge of the Pap smear, only 45% had had the test (p<0.001). Of those who did not have a Pap smear the commonest barrier was lack of knowledge at 46.3% and fear of procedure was 29.4%.

Conclusion: More education is required to acquaint women in rural Fiji about cervical cancer, its associated risk factors as well as the benefits of cervical cancer screening programs and other prevention strategies. 
Be the change you wish to see: midwives as researchers
Authors: Cooper Megan , Puawe Paula , Connell Jane
Published: December 2015

Research - it is a term that is often met with a multitude of reactions. For some it is a bland concept and process whilst for others research is exciting and thought-provoking as well as motivating. As the systematic investigation of both new and existing knowledge and practice 1, research is an integral element of maternity care provision and therefore a midwives role. Midwives are obligated both professionally and ethically to be consumers of research knowledge, particularly as accountability and professional obligations begin and end with practice that is evidence-based 2. Contemporary practice provides a myriad of opportunities for midwives to engage in the research process, and it is through the assessment of care that the viability and therefore, questionability of knowledge and its resultant outcomes are understood. With this knowledge and understanding, positive change can occur.  
Staðarnavnið Grømmi á Viðareiði / The Place-name Grømmi, Viðareiði
Authors: Weyhe Eivind
Published: December 2015

ÚrtakGreinin er ein roynd at tolka staðarnavnið Grømmi, Eystur á Grømma á Viðareiði í Norðuroyggjum. Tað hevur verið navn á einum slætta uttangarðs, men er í dag navn á einum bústaðarøki í bygdini á Viðareiði. Niðurstøðan í greinini er at navnið upprunaliga er samansett, og at forliðið hevur verið norr. gróf f. ‘gróv, bekk’ (Heggstad), meðan eftirliðið hevur verið munni m. ‘gap, opning, utgang’ (Heggstad). AbstractThe article attempts to explain the form Grømmi, which occurs in the place-name Eystur á Grømma in the village of Viðareiði on Viðoy in the north of the Faroes. It was once the name of a flat area of ground outside the village, but is now applied to part of the village itself, which has expanded considerably in recent years.The author concludes that Grømmi was originally a compound, made up of ON gróf f. ‘hollow, watercourse’ and munni m. ‘mouth’.
Message from the Editors
Authors: Ozcan Asilkan Dogan Ibrahim &
Published: December 2015

Dear Readers

 

It is an honour for us to welcome you as an Editor of Global Journal of Computer Sciences which has accepted publications since 2011 and is indexed in qualified databases. Global Journal of Computer Sciences (GJCS) is listed in many scholarly citation indexes; DOAJ, Ulrich's Educational Research Abstracts (ERA), EBSCO, Google Scholar, PsycINFO, Asian Education Index & AWER index. Also our major aim is to increase the quality of the journal day by day. We are ready to publish the new studies of Global Journal of Computer Sciences which has 5 full length articles written by authors from Girona, Cyprus, Morocco and Turkey

 

I would like to express my thanks to all authors preferring  Global Journal of Computer Sciences to make their articles published, all reviewers working seriously in the process of publishing, and also quest editors supporting us in this process.

 

 

Best regard

 

Prof. Dr. Dogan İbrahim

Editor – in Chief

 

Assoc. Prof. Dr. Özcan Asilkan

Co-editor

 
E-Tendering: Modeling of a multi-agents system integrating the concepts of ontology and big data
Authors: Diabagate Amadou , Azmani Abdellah , El Harzli Mohamed
Published: December 2015

This work deals with the modeling of a computer system dedicated to e-procurement specifically e-tendering. For the establishment of this system, semantic web ontologies, multi-agent systems and big data were used. To have a modular system, pledge of reliability, of speed and potential scalability, multi-agents systems have been used. The agents of the system communicate and collaborate throughout the tendering process to perform tasks such as the generation of tender documents, bids evaluation, contract signature and monitoring of the realization of the contract. The knowledge engineering through the semantic web ontologies was used in order to have a complete semantic description of the shared information and foster good communication between the different agents of the system. Finally, to store and take advantage of structured and unstructured data generated by the different sources of data relating to the governance of public procurement, Big Data technologies were integrated.

The objective of this work is to establish an efficient computer system capable of solving all or part of the problems relating to the award of public contracts.

 

 

Keywords: e-procurement, e-tendering, software engineering, big data, multi-agents system, semantic web, ontology, artificial intelligence;
Daily and hourly mood pattern discovery of Turkish twitter users
Authors: Celik Mete , Dokuz Ahmet Sakir
Published: December 2015

Massive amount of data-related applications and widespread usage of web technologies has started big data era. Social media data is one of the big data sources. Mining social media data provides useful insights for companies and organizations for developing their services, products or organizations. This study aims to analyze Turkish Twitter users based on daily and hourly social media sharings. By this way, daily and hourly mood patterns of Turkish social media users could be revealed in positive or negative manner. For this purpose, Support Vector Machines (SVM) classification algorithm and Term Frequency â€“ Inverse Document Frequency (TF-IDF) feature selection technique was used. As far as our knowledge, this is the first attempt to analyze peopleâ€™s all sharings on social media and generate results for temporal-based indicators like macro and micro levels.Â Keywords: big data, social media, text classification, svm, tf-idf term weighting, daily and hourly mood patterns.
Impact of scaffolding on complexity and accuracy of Iranian EFL learners' narrative writing
Authors: Bigdeli Rouholah Askari , Rahimi Ali
Published: December 2015

From the perspective of sociocultural theory (SCT), knowledge of an L2 is constructed and internalized through interaction. This is at odds with the "computational model" of learning that focuses on psycholinguistic processes isolated from social context. The present study was an attempt to investigate whether scaffolding, one of the key constructs of SCT, had any significant effect on complexity and accuracy of Iranian EFL leaners' narrative writing. Thirty eight (n=38) Iranian EFL learners learning English at a language institute within two intact groups (Experimental group=18, control group=20) took part in the study. The treatment lasted for one semester during which the participants wrote four narrative writings based on their course book. The writings of the two groups were rated in terms of syntactic complexity and accuracy. The results of the study showed that scaffolding turned out to have a significant effect on complexity and accuracy of Iranian EFL learners' narrative writing. In other words, the participants in the experimental group who experienced different kinds of scaffolding i.e. expert scaffolding, reciprocal scaffolding and self-scaffolding, could write more complex and more accurate narratives, as compared with those in the control group for whom scaffolding was not practiced. Keywords: EFL, scaffolding, sociocultural theory, language teaching.
The impact of self-perception on Iranian EFL learners' oral communication
Authors: Soltani Ali , Ghafari Mohsen
Published: December 2015

This study investigates the probable relationship between Iranian EFL learners' self-perception and assertiveness and their oral communication skills. A sample of 80 male and female Iranian EFL students participated in this study. The participants were initially required to complete Belbin's self-perception questionnaire, they were then asked to complete Oral Communication Strategies Inventory (OCSI). The results of the data analysis indicated that there was a strong positive correlation between the two variables and thus the higher the level of self-perception and assertiveness, the higher the level of communication will be. Keywords: Communication Strategies, Self-perception, Assertiveness.
Message from editor
Authors: Gunduz Mustafa
Published: December 2015

Dear ReadersÂ It is the great honor for us to publish seventh issue of Global Journal of SociologyÂ The journal welcomes original empirical investigations. The scope of the Global Journal of Sociology includes, but is not limited to; the following major topics as Child, Youth and Old Age, Communication and Art, Culture and Changes, Deviance and Social Control, Economy and Development, Education, Ethnic Relations, Human Rights and Collective Good, Gender and Human Rights, Identity, Image and Social Cohesion, Localization and Globalization, Organizations, Professions and Work, Political Sociology and Law Issues, Social Security and Public Health, Sociology of Marriage and Family, Sociology of Population and Migration, Sociology of Religion, Collective Behavior and Social Movements and Theoretical, Comparative and Historical Studies.Â Â Post position and local autonomy have been included into this issue. The topics of the next issue will be different. You can make sure that we will be trying to serve you with our journal with a rich knowledge in which different kinds of topics are discussed in 2015 Volume.Â A total of five (5) manuscripts were submitted for this issue and each paper has been rigor peer reviewed by the reviewers specialized in the related field. At the end of the review process, a total of two (2) high quality research papers were selected and accepted for publication.Â We thank all the contributors who helped us to publish this issue.Â Best regardÂ Dr. Mustafa GÃ¼ndÃ¼zEditor â€“ in Chief
The content analysis of the computer-assisted studies in mathematics education between the years 2009-2014/April
Authors: Uzunboylu Huseyin , Cumhur Meryem
Published: December 2015

In this study, the examination of the trends regarding the used methods and methods through the content analysis of the published articles and dissertations in the field of Computer-Assisted Mathematics Education is aimed. Within the scope of the research, the articles published in the database of ISI Web of Science and the dissertations published in the thesis centre of Turkish Council of Higher Education (YOK) were scanned and 7 master’s theses, 5 doctoral theses, and 43 articles were analysed. In this study, the distribution of articles and theses by years, the number of authors and by subjects and the used research methods and data collection methods were identified. After the percentages and the frequencies of the findings had been calculated, they were presented in the form of charts.

 

Keywords: computer-assisted mathematics education, computer-based education, mathematics ınstruction, mathematics, computer, content analysis.
Table of contents
Authors: Content Table of
Published: December 2015

 

Table of Contents

From the Editors

Prof. Dr. Hafize Keser

Assoc. Prof. Dr. Huseyin Bicen

 

Requirements of students for further integration on labor market

Băneș, A., Orboi M.D., Lile R., Merce I.

50-55

 

School-Community Partnership - an effective tool, useful for environmental community development of Romanian countryside

Băneș, A., Orboi M.D., Popescu. C., Iancu T.

56-61

 

The content analysis of the computer-assisted studies in mathematics education between the years 2009-2014/April

Huseyin Uzunboylu, Meryem Cumhur

62-72

 

Advantages of using webquests in efl classes in a technical university

Kuimova M.V., Golousenko M.A., Nikiforov D.S., Shcherbakov V.V.

73-77
Table of contents
Authors: Content Table of
Published: December 2015

Table of contents
Message from editor
Authors: Soran Haluk
Published: December 2015

It is the great honor for us to publish fifth issue of World Journal of Environmental Research

 

The scope of World Journal of Environmental Research includes, but is not limited to; the following major topics as Environmental agriculture, Environmental biology, Environmental biotechnology, Environmental engineering, Environmental health, Environmental nanotechnology, Environmental microbiology, Environmental toxicology, Environmental pollution and monitoring, Environmental zoology, Environmental ethics and biosciences, Environmental informatics, Environmental biochemistry, Environmental genetics, Environmental botany, Environmental issues related to biosciences, Environmental biophysics, Environmental geology, environmental education, environmental history  The major criteria in the review and the selection process concern the significance of the contribution to the area of  environment.

 

Water sample, politics of greening, water quality, Hydrogeological modeling have been included into this issue. The topics of the next issue will be different. You can make sure that we will be trying to serve you with our journal with a rich knowledge in which different kinds of topics are discussed in 2015 Volume.

 

A total of seven (10) manuscripts were submitted for this issue and each paper has been rigor peer reviewed by the reviewers specialized in the related field. At the end of the review process, a total of two (4) high quality research papers were selected and accepted for publication.

 

We thank all the contributors who helped us to publish this issue.

 

Best regard
Assessment of persistent organic pollutants in water samples from River Challawa in Kano, Nigeria
Authors: Sarauta A. , Sabo A. , Abdulhamed I. A. , Yusuf Y. O.
Published: December 2015

This study was aimed at assessing the levels Persistent Organic Pollutant in Challawa River Basin of Kano State, Nigeria. The investigation was particularly plan to assess the presence of PCBs and PAHs in River Challawa and compare the concentrations of the pollutants with the acceptable limit set by Nigerian Standard and other international regulatory agencies. Data were collected using reconnaissance survey; laboratory experiment as well as other secondary data sources. A total of 26 water samples were collected through stratified and systematic random sampling. Three sampling points were chosen and designated A, B and C along the stretch of the river from Yan Danko Bridge to Tamburawa bridge. The result shows that Polychlorinated biphenyls were not detected but polycyclic aromatic hydrocarbons  were detected in all the samples analyzed using GCMS. The total concentrations of PAHs in the water samples range between 0.001 to 0.087mg/l. The analytical results revealed that most of the pollutants present in water were at significantly very high levels especially at Zamawa village situated very close to Challawa industrial estate - the major sources of effluent discharge point, making the drinking water around area is not fit for consumption. In conclusion, it can be said that industrial activities had impact on Challawa River basin and its environment. It is recommended among others that the industries should treat their effluents before releasing them into Challawa river basin. 

 

Keywords: persistent, organic, pollutant, challawa river, Nigeria
The politics of greening practice in contemporary rural China: a case study of Yang Village
Authors: Fan Songnan , Sha Yao
Published: December 2015

This article takes Yang Village as a case to analysis what the specific implementation of the Three-North Shelterbelt Project is like. This village leader Laoyang gets afforestation projects through chasing project and mobilizes all the villagers by the method of economic benefits. While these afforestation projects promoted Yang Village economic income, it also ruins its local traditional pattern of production and living such as raising sheep. The study found the following conclusions: 1ï¼‰Economy supremacy ideology plays a dual role. Not only does this strategy redirect the publicsâ€™ attention from environmental protection on to economic development, it also mobilizes the publicâ€™s will power to participate in such afforestation project. 2) Traditional rural culture and local production practice plays a subtle role in the designing and implementation process of environmental policies, projects and regulations.Â Keywords: environment, afforestation, The Three-North Shelterbelt Project, chase project, rural society, economy supremacy
World Journal on Educational Technology (WJET)
Authors: Index Referees
Published: December 2015

Referees Index

The academicians listed below have acted as referees since December 2015 for manuscripts in which the review process of which have been completed, as well as for those paper submissions which have been cancelled by the authors for some reason and for those that have been rejected. The editorial board members are grateful to all referees who have contributed to World Journal on Educational Technology.

Abdullah Kuzu

Anadolu University, Turkey

Antonella Carbonaro

University of Bologna, Italy

Birikim Ozgur

Near East University, Cyprus

Christine Harmes

James Madison University, United States

Cigdem Hursen

Near East University, Cyprus

Hafize Keser

Ankara University, Turkey

Huseyin Uzunboylu

Near East University, Cyprus

Murat Tezer

Near East University, Cyprus

Ray Webster

Murdoch University, Australia

Sirin Karadeniz

Bahcesehir University, Turkey

Sonia Maria Suaez-Garaboa

University of A Coruña, Spain

Steven Ross

John Hopkins University, United States

Thirusellvan Vandeyar

University of Pretoria, South Africa

Tse-Kian Neo

Multimedia University, Malaysia

 
Teachers beliefs and technology use in kindergarten and elementary classrooms
Authors: Abu Al Rub Majedah Fawzi
Published: December 2015

With the increased availability of technology in today’s schools, concerns arise over whether teachers are effectively incorporating technology tools into their instruction in order to advance student learning and engagement. This project was designed to examine the types of educational technology practices that kindergarten and elementary teachers in Denver, Colorado, USA, implement in their classrooms and their beliefs concerning the implementation of educational technology in their classrooms.

Teacher participants were interviewed to evaluate the types of technology they utilize in their lessons and their beliefs concerning the implementation of technology. The researcher found that teacher participants integrate a variety of technology into their classrooms. The results also showed that the participants are committed to utilize technology because they strongly believe that it benefits students. However, the results showed that there is a distinct difference concerning how technology is utilized in the classroom among the participants.

 

Keywords: teachers’ beliefs, technology use, kindergarten and elementary students.
Examining the instructors computer self-efficacy perceptions
Authors: Semerci Ali , Keser Hafize
Published: December 2015

In this study, instructors’ computer self-efficacy perceptions are examined in terms of variables such as age, gender, academic status, teaching experience, computer literacy and computer skills. The study is a descriptive one in which relational scanning method has been utilized. The study has been carried out within the framework of the data obtained from 172 police instructors who work in 28 Police Vocational Schools of Higher Education across the country. The data were collected by using a survey and “The Computer Self-efficacy Perception Scale”. A significant difference has been found between the self-efficacy perceptions of the instructors and their computer skills and computer training that they received. In addition to this, it has been seen that there was not any significant difference between self-efficacy perceptions of instructors and age, gender, position status, teaching experience and computer literacy. This is the first study carried out for determining the self-efficacy perceptions of police instructors. The results should be considered during the police trainer development trainings. 

 

Keywords: self-efficacy, self-efficacy perceptions, training, education, police education.

 
QAWAID TAFSIR: TELAAH ATAS PENAFSIRAN AL-QUR’AN MENGGUNAKAN QAUL SAHABAT
Authors: Rosyad Aftonur
Published: December 2015

The emergence of a wide variety of interpretations of the Qur’an methodology often forget the methods offered by the classical scholars. Though the appearance of the existing methods of interpretation as it is today can not be separated from the rules of interpretation which was initiated by the classical scholars of the period. The Qur'an as a book of guidance for human beings can not be understood directly without the rules of interpretation that apply. One of the rules of interpretation used in interpreting the Qur'an is a rule of interpretation of the word friend. The interpretation of the word friend is regarded as highly representative explanation of the validity of the understanding of the Qur'an. Because friends are people that are still able to meet directly with the Prophet, of course, the rules of interpretation that are used are not much distorted.