bluuebunny/crossref_metadata_2025 huggingface dataset:
Un diagnostic de gouvernance basé sur le discours des acteurs : le cas du littoral marseillais « côté mer » (Marseille, France)
Authors: Ami Dominique , Rouchier Juliette , Calandra Stéphane
Published: February 2019

Nous étudions ici le discours que certains acteurs du littoral marseillais (des usagers, des élus et des gestionnaires) ont de la gouvernance de la zone, en nous penchant en particulier sur l’institution (l’ensemble des règles) telle qu’elle est perçue et comment les divers acteurs sont vus comme plus ou moins légitimes. Nous utilisons pour cela le cadre d’analyse Institutional Analysis and Development construit par Elinor Ostrom pour analyser des entretiens semi-directifs menés en 2013. Nous avons en particulier identifié la description des usages, des acteurs, des conflits et des nuisances, ainsi que la répartition des rôles de définition des règles et d’autorité. Nous notons plusieurs éléments importants : les acteurs partagent un objectif affiché de protection du littoral identifié comme un espace très fréquenté, fragile, entre terre et mer, ils identifient un acteur central légitime (le Parc national des Calanques, pourtant à peine en fonction à l’époque) comme meneur de la gouvernance, et définissent également des usagers extérieurs non légitimes (les touristes, les pollueurs) comme acteurs qui ne partagent pas les objectifs de locaux. Les règles opérationnelles sont relativement peu remises en cause alors qu’il existe une certaine incompréhension et même une confusion pour les règles de choix collectifs et les règles constitutionnelles. Ces dernières, qui permettent de penser la dynamique des institutions semblent avoir disparu depuis la création du Parc national, ce qui signale une gouvernance imparfaite, mais permet aussi d’indiquer un chemin pour l’améliorer.
Accès au foncier relatif à la pisciculture familiale au Centre-Ouest et au Sud-Ouest de la Côte d’Ivoire
Authors: Goulin Aymard Boris , Vanga Adja Ferdinand , Amani Yao Célestin , Blé Mélécony Célestin , Yoro Blé Marcel
Published: February 2019

Le contexte combinant saturation foncière sur fond de marchandisation imparfaite de la terre, prise de valeur des bas-fonds et regain d’engouement pour la pisciculture familiale au Centre-Ouest (C.-O.) et au Sud-Ouest (S.-O.) de la Côte d’Ivoire complexifie le mécanisme acquisitif et conservatoire de droits portant sur le foncier piscicole. La présente étude s’est effectuée auprès de 213 pisciculteurs dont 142 au C.-O. et 71 au S.-O. ainsi que 34 acteurs fonciers non pisciculteurs en se proposant de décrire les modes d’accès au foncier piscicole dans ces deux régions. Il en résulte que, dans des proportions variables, divers modes sont adoptés pour l’accès au foncier piscicole. Ce sont le don, l’achat, l’héritage et le faire-valoir indirect (FVI) au travers desquels les pisciculteurs se garantissent des droits d’exploitation pérennes sur leurs sites de production.
Visible Light Communication System for Indoor Positioning Using Solar Cell as Receiver
Authors: Chaabna Ameur , Babouri Abdesselam , Huang Chuanxi , Zhang Xun
Published: February 2019

This article studies an indoor positioning system (IPS) based on visible light communication (VLC) using the solar cells as optical receivers. Due to the solar cell characteristics, the proposed system offers simultaneously communication and energy gathering. The current - voltage (I-V) and power - resistor (P-R) curves of solar cell under visible light is studied. The frequency response is investigated. The effect of solar irradiance interference on the VLC-based indoor positioning system (VLC-IPS) efficiency is also shown. A trilateration technique is used for estimating receiver's location. The obtained results show that the proposed system can simultaneously receive data and collect energy and it provides a suitable positioning accuracy with an average position error less than 3cm. The studied system can be considered an eco-friendly and promising technology.
Gauging the E-Readiness for the Integration of Information and Communication Technology Into Pre-Tertiary Education in Ghana
Authors: Gyaase Patrick Ohemeng , Gyamfi Samuel Adu , Kuranchie Alfred
Published: February 2019

Countries are investing in information and communication technology (ICT) infrastructure and educating their citizens for effective ICT utilization. The attainment of the anticipated benefits hinges on effective integration of ICT in various levels of education. Effective integration of ICT requires educators and teachers who possess the skills to harness the capabilities of ICT into their teaching and learning environments. This article assesses the extent of pre-university teachers' e-readiness to utilize ICT in teaching their various subjects by assessing their technological pedagogical content knowledge (TPACK). Although the ICT literacy of teachers in the pre-university schools in Ghana is high, their ability to utilize ICT to design and deliver subject contents and improve the learning environments of their respective subjects is low. The article suggests a comprehensive retooling of teachers with capabilities to integrate ICT in teaching their subjects.
Schema Theory-Based Flipped Classroom Model Assisted With Technologies
Authors: Yu Zhonggen , Zhu Qin
Published: February 2019

The flipped model assisted with technologies has an edge over the non-flipped model. Through collecting, generalizing, systemizing, and summarizing around 70 publications from SSCI, A&HCI, and EI Compendex databases, it was concluded that the flipped approach could assimilate and adapt learners' schemata before class. In class, the pre-class schemata activation and construction have laid a solid foundation for students' in-class learning activities. Students could achieve successful schemata modification and reconstruction with the assistance of both their partners and teachers through collaborative learning. In the non-flipped classroom, however, they not only lacked the pre-class round of schemata assimilation and adaptation but also could not successfully activate their existing schemata. After class, students in the flipped model with technology could communicate with teachers through the online platform to continue their schemata adaptation process. Future empirical studies are needed to identify the effectiveness of flipped classrooms assisted with technologies.
Assessing the Teaching and Learning Process of an Introductory Programming Course With Bloom's Taxonomy and Assurance of Learning (AOL)
Authors: Malik Sohail Iqbal
Published: February 2019

Learning to program requires the development of multiple skills including critical thinking, problem-solving, as well as learning the syntax and semantics of the programming language. For novices, to acquire all these skills is considered a challenging and difficult task. They have to focus on both problem-solving strategies and the syntax and semantics of the programming language to acquire these skills. In this study, this article compares the current teaching and learning approach of an introductory programming (IP) course with the six categories of Bloom's taxonomy. The assurance of learning (AOL) process was incorporated in the IP course to assess students' learning outcomes on the basis of achiever (high, medium and low) and performance (very good, good enough and not good enough) categories. The results showed that the current teaching and learning approach of the IP course addressed all the six categories of Bloom's taxonomy. Most of the students (63%) fall under the medium achiever category. Moreover, 50% students learning outcomes come under ‘not good enough' performance category.
Erosion-Corrosion Wear of Heat-Exchanger Materials by Water/Ethylene-Glycol/Alumina Nanofluids
Authors: Molina Gustavo J. , Aktaruzzaman Fnu , Soloiu Valentin , Rahman Mosfequr
Published: February 2019

Nanofluids are suspensions of nanoparticles in ordinary coolants, but their tribological effects on heat-exchanger materials are unknown. Previous research has explored wear from distilled-water-base nanofluids only, while most engine-coolants are alcohol solutions in water. This article presents testing of aluminum and copper by jet impingement of 50%-ethylene-glycol in water solution and of its 2%-alumina nanofluid. The effects are investigated of nanoparticle addition on the anticorrosion protection provided by ethylene glycol. The observed modifications showed that ethylene-glycol in water nanofluid led to wear patterns that were different than those obtained with the base-fluid; nanoalumina addition enhanced erosion and corrosion on aluminum and copper. Comparing the effects of ethylene glycol and its nanofluid solutions to those from same tests performed with distilled-water and its nanofluid suggests that nanopowders can substantially enhance wear by decreasing the anticorrosion action of ethylene glycol by a synergetic mechanism of erosion-corrosion
Internet of Things (IOT) in Healthcare – Smart Health and Surveillance, Architectures, Security Analysis and Data Transfer
Authors: Panchatcharam Parthasarathy , Vivekanandan S.
Published: February 2019

Wellbeing is fundament requirement. What's more, it is human appropriate to get quality health care. These days, India is confronting numerous medical problems in light of fewer assets. This survey article displays the idea of solving health issues by utilizing a recent innovation, the Internet of Things (IOT). The Internet of Things with their developing interdisciplinary applications has changed our lives. Smart health care being one such IoT application interfaces brilliant gadgets, machines, patients, specialists, and sensors to the web. At long last, the difficulties and prospects of the improvement of IoT-based medicinal service frameworks are talked about in detail. This review additionally summarizes the security and protection worries of IoT, administrations and application of IoT and smart healthcare services that have changed the customary medicinal services framework by making healthcare administration more proficient through their applications.
Stock Price Prediction Using Fuzzy Time-Series Population Based Gravity Search Algorithm
Authors: Srinivasan N.  , Lakshmi C.
Published: February 2019

The main motive of this research is to predict the future stock value of the particular day with minimum variation from the actual value of stock. In this research, a genetic algorithm-based gravity search algorithm is proposed for stock market prediction. It will be helpful for short-term investors in the National stock market. Some important factors that affect the value of stock are total stocks traded, total turnover of the company, gross domestic product (GDP) of the country, GDP per capita and political or external factors are some of the main factors that affect the stock value of that particular day. Opening and closing values of the stock market were predicted with the help of the above factors. Each factor will be considered as an object with mass, the mass of every object will be based on the importance. With the help of a Gravitational Search Algorithm (GSA) [1], the converging point of the entire object is determined and it is said to be the optimal output of the algorithm. The input considered are opening, closing, low and high values for a period of one year.
Saliency Priority of Individual Bottom-Up Attributes in Designing Visual Attention Models
Authors: Hosseinkhani Jila , Joslin Chris
Published: February 2019

A key factor in designing saliency detection algorithms for videos is to understand how different visual cues affect the human perceptual and visual system. To this end, this article investigated the bottom-up features including color, texture, and motion in video sequences for a one-by-one scenario to provide a ranking system stating the most dominant circumstances for each feature. In this work, it is considered the individual features and various visual saliency attributes investigated under conditions in which the authors had no cognitive bias. Human cognition refers to a systematic pattern of perceptual and rational judgments and decision-making actions. First, this paper modeled the test data as 2D videos in a virtual environment to avoid any cognitive bias. Then, this paper performed an experiment using human subjects to determine which colors, textures, motion directions, and motion speeds attract human attention more. The proposed benchmark ranking system of salient visual attention stimuli was achieved using an eye tracking procedure.
Cooperative Encoding Strategy for Gate Array Placement
Authors: Wang Hong-Bo , Su Qing-Dong , Zeng Ruolei
Published: February 2019

In recent years, the quadratic force-directed placement is becoming popular due to its stable quality at low power. The force-directed placement composes of two operations, namely, orientating and modulating. The two actions are going on until the overlap degree can meet a predetermined target. Different methods have a great influence on their quality of a layout. A novel encoding strategy of two-dimensional chromosome based on immune cooperative optimization is suggested. The main works first focus on a multi-point crossover strategy, and its Poisson distribution makes use of a Euclidean distance density between the concentration of antibody suppression and the translation variation of optimal gene pairs in two-dimension. Then, a flexible region division is proposed for dealing with the layout problem of gate array. The related experiment indicates the constructed encoding strategy for gate array placement is effective and efficient.
Material Based FEA Analysis of a Go-Kart Chassis: A Comparative Study
Authors: Attarde Rushikesh , Chougule Abhijeet , Magdum Rohit
Published: February 2019

The following study involves designing of a go-kart chassis using CAD and CAE tools. The chassis is the supporting base for every automobile and chassis is subjected to various loads due to self-weight, acceleration, braking, bumps and cornering. CATIA Software was used for designing the CAD model of the chassis and ANSYS software was used for the FEA analysis of the chassis under different loading conditions. The calculations of these forces due to impacts are required to design a functional chassis for go-kart and having an adequate stiffness to avoid any vibration or resulting resonance. Ten mode shapes and natural frequencies are studied for vibration characteristics using Modal analysis in ANSYS. For impact analysis the loads in terms of gravitational acceleration are applied for the front, side and rear impact as 4g, 2g and 2g respectively and the results are compared to get the best material among the four selected materials AISI 4130, AISI 1080, AISI 1020 and AISI 1026.
Analysis of the Effect of Adding Sandy Clay into Cement Mortar on the Bending Strength of Built-Up Masonry Prisms
Authors: Ali Hassan M. Hassan , Boon Koh Heng , Altouhami Rasheed , Shen Ng Wei , Radwan Ashraf , Mansur Mundr
Published: February 2019

Mortar is a workable paste essential in civil and building construction. Mortar works as binding material extensively use for masonry unit in construction. The global consumption of natural sand is very high, due to the extensive use of concrete or mortar. Natural sand deposits are being depleted and causing a serious threat to the environment as well as the society. Sandy clay has been widely use in preparing the mortar for masonry work. The aim of this research was to study the bending strength of built-up masonry prism using sandy clay mortar. There were two series of mortar containing 0% and 100% of sandy clay had been prepared. The sandy clay was used to replace natural fine aggregate. Mortar with 0% sandy clay was the control mix containing 100% natural fine aggregate. Three types of masonry unit consist of clay brick, cement brick and lightweight brick were used in this study. The masonry units were combined together using the mortar joints to form the masonry prisms. 100% natural fine sand and 100% sandy clay mortar were prepared and used for the joints. Built-up masonry prisms with single and double joints of mortar. Also, the masonry prisms contained from a length ranging from 390 mm to 610 mm were prepared using the mortar joints. The thickness of the mortar joint which was used in this study was 10 mm, 20 mm and 30 mm. the prisms had been tested for the determination of bending strength at 28 days. The experimental results were analyzed to investigate the effect of sandy clay and thickness of mortar on the bending strength of built-up masonry prism. Results had shown that masonry prism built with sandy clay mortar has higher bending strength compare to the fine sand mortar. Clay brick exhibited highest bending strength with sandy clay mortar which was 38.28 N/mm2and cement brick had the lowest bending strength which was 18.8 N/mm2, while cement brick achieved optimum bending strength. In addition, the highest collapse and deflection achieved by clay brick and cement brick whereas the lowest value of collapse and deflection was by lightweight brick. The highest percentage of increment in terms of collapse load was determined to be 13.73% for sandy clay mortar prism. Hence, 100% sandy clay mortar is suitable to be used in masonry works.
Analysis of Building Facade Materials Usage Pattern in Tehran
Authors: Jalali Sara , Parapari Danial Monsefi , Mahdavinejad Mohammad Javad
Published: February 2019

Clever decision making in the selection of building materials is a topic that focuses on important aspects of the building industry.‏ The materials used in the facade of the building not only affect the appearance of the building and the city but also affect the environmental, social, economic, energy efficiency and other kinds of aspects. Considering the importance of this issue, in this research, the city of Tehran‏ was studied in terms of building materials and tried to solve the problems of Tehran by identifying and analyzing the current situation. Statistical analysis was performed using R software packages version 3.5.0 and Microsoft Excel. The most important result of the data is that travertine has been identified as the most commonly used material in Tehran since the past 10 years. In this research, after examining the various types of materials used in the facade of the buildings in Tehran, we seek to discover the relationship between the type of building materials and the building age. In addition, after examining sample buildings, several common types of combinations of materials have been presented in the facades of Tehran's buildings. Keywords: building materials, building facade, travertine
A Fuzzy Behavioral TOPSIS Model in Manufacturing Environment
Authors: Sofuoğlu Mehmet Alper
Published: February 2019

In this study, a novel fuzzy behavioral TOPSIS model was proposed. Sensitivity analysis is conducted according to the behavioral TOPSIS model parameter (λ) for the different case studies taken from the literature. The ranking results are slightly different according to different λ values. The results of the study can be used in material and manufacturing method selection problems.
Detailed mineralogical data from hydrothermally altered igneous rocks at Clarke Head, Minas Fault Zone, western Nova Scotia
Authors: Pe-Piper G , Nagle J , Piper D J W , Boucher B
Published: February 2019

Fault zone megabreccia exposed at Clarke Head, near Parrsboro, Nova Scotia, is located in a fault splay of the mid-Carboniferous Minas Fault Zone (MFZ). Lower Carboniferous sedimentary rocks and Upper Devonian-Lower Carboniferous gabbro, diorite and syenite occur
as megablocks within the fault zone and have been previously reported in Geological Survey of Canada Open File 8314. This study describes the magmatic and alteration minerals of additional samples of very coarse grained syenite and diorite-tonalite. It also presents the results of LAICPMS analyses
of rutile and titanite from the syenite. REE patterns in the rutile are largely carried in felsic melt inclusions or ilmenite-magnetite inclusions. Based on U-Pb LA-ICPMS analyses of rutile, the syenite was likely emplaced ~360 Ma and no younger than 353 Ma, and was thus synchronous with the
late phases of the Cobequid Highland Na-rich A-type granite plutonism. However, only at Clarke Head is there extreme Na- and Cl-rich metasomatism, indicated by scapolite and Cl-rich hastingsite, and the Cl-rich fluids are interpreted to have been derived from regional halite evaporites at faulted
basin margins. The same Cl-rich fluids resulted in local dissolution-reprecipitation of Ti and Zr and resetting of the U-Pb system in the altered rutile, at 337.4 ± 3.5 Ma. This provides a minimum age for the Windsor Group evaporites.
Pastoral ministry and persons with disabilities: The case of the Apostolic Faith Mission in Zimbabwe
Authors: Sande Nomatter
Published: February 2019

Background: The Persons with Disability (PWD) are the minority group dehumanized in the church. The subject of disability is complicated because of the impact of the Judeo-Christian teachings. The Apostolic Faith Mission (AFM) in Zimbabwe is a leading Pentecostal church with a pastoral ministry theology which emphasises divine healing, miracles, signs and wonders. Thus, the space of PWD and how the PWD either connects or benefits from this Pentecostal heritage is a critical gap in this study.Objectives: The objective of this study was to explore the construction of disability through the practices and processes of the pastoral ministry in the AFM.Method: This study followed qualitative research and used the social model of disability as theoretical framework. The data were collected from 26 participants who are PWD and pastors using in-depth interviews, focus groups and participant observations.Results: The results showed the AFM pastoral practices created invisible barriers that militate against PWD. Thus, the pastoral ‘divine solutions’ and ‘triumphalist messages and teachings’ are ‘prescriptive’ and ineffective in reducing ‘the plight of PWD in Zimbabwe’.Conclusion: The study concludes that the pastoral ministry should be ‘one efficient vehicle’ with which the church can care for and ‘transform persons with disabilities’. Pastors should break the glass ceiling by expecting pastors to minister better and more effectively creating a safe space for persons with disabilities. A caring community should be the nature of both the AFM and the pastoral ministry responsible for meeting the needs of the persons with disabilities.
Improving Sanitation and Hygiene through Community-Led Total Sanitation: The Zambian Experience
Authors: Yeboah-Antwi Kojo , MacLeod William B. , Biemba Godfrey , Sijenyi Patrick , Höhne Alexandra , Verstraete Lavuun , McCallum Caitryn M. , Hamer Davidson H.
Published: February 2019

In 2012, approximately 5.6 million Zambians did not have access to improved sanitation and around 2.1 million practiced open defecation. The Zambia Sanitation and Hygiene Program (ZSHP), featuring community-led total sanitation, began in November 2011 to increase the use of improved sanitation facilities and adopt positive hygiene practices. Using a pre- and post-design approach with a population-level survey, after 3 years of implementation, we evaluated the impact of ZSHP in randomly selected households in 50 standard enumeration areas (representing 26 of 65 program districts). We interviewed caregivers of children younger than 5 years old (1,204 and 1,170 female caregivers at baseline and end line, respectively) and inspected household toilet facilities and sites for washing hands. At end line, 80% of households had access to improved sanitation facilities versus 64.1% at baseline (prevalence ratio [PR] = 1.25; 95% CI: 1.18–1.31) and 14.1% did not have a toilet facility compared with 19.4% at baseline. At end line, 10.6% of households reported living in an open defecation-free certified village compared with 0.3% at baseline (PR = 32.0; 95% CI: 11.9–86.4). In addition, at end line, 33.4% of households had a specific place for washing hands and 61.4% of caregivers reported handwashing with a washing agent after defecation or before preparing food compared with 21.1% (PR = 1.59; 95% CI: 1.39–1.82) and 55.2% (PR = 1.11; 95% CI: 1.04–1.19) at baseline, respectively. Community-led total sanitation implementation in Zambia led to improvements in access to improved sanitation facilities, reduced open defecation, and better handwashing practices. There is however a need for enhanced investment in sanitation and hygiene promotion.
Child Defecation and Feces Disposal Practices and Determinants among Households after a Combined Household-Level Piped Water and Sanitation Intervention in Rural Odisha, India
Authors: Bauza Valerie , Reese Heather , Routray Parimita , Clasen Thomas
Published: February 2019

Latrine access alone may be insufficient to encourage households to dispose of young children’s feces safely in a latrine, and little is known about the determinants of improved child feces disposal. We used longitudinal data collected at up to three timepoints for children less than 5 years of age from households in Odisha, India, which received a combined household-level piped water supply and sanitation intervention, but did not specifically promote the safe disposal of child feces. Among the 85% of intervention households who reported access to improved sanitation, we characterized child defecation and feces disposal practices by age, across time, and season, and assessed determinants of improved disposal. Feces from children less than 3 years of age was commonly picked up by caregivers but disposed of unsafely with garbage into open areas (56.3% of households) or in a drain/ditch (6.2%). Although children 3 and 4 years were more likely to use a latrine than younger children, their feces was also more likely to be left in the open if they did not defecate in a latrine. For children less than 5 years of age, most (84.7%) children’s feces that was safely disposed of in a latrine was because of the children defecating in the latrine directly. Significant predictors for disposing of child feces in an improved latrine were the primary female caregiver reporting using a latrine to defecate, the child’s age, and water observed at place for handwashing. These findings suggest that child feces interventions should focus on encouraging children to begin using a toilet at a younger age and changing the common behavior of disposing of young child’s feces into open areas.
Adult Education and Lifelong Learning Policies
Authors: Doutor Catarina , Guimarães Paula
Published: February 2019

This article discusses adult education policies in Greece and Portugal according to the model proposed by Lima and Guimarães (2011), which encompasses three analytical perspectives on adult learning and education. After the introduction, the methodological path followed is presented based on the document analysis of Greek and Portuguese national reports and the theoretical framework about adult education policies is discussed. A critical analysis of adult learning and education in both countries is made, based on a comparative approach. The conclusions stress the Europeanisation of adult education policies in the frame of human resources management policies as well as concerns about participation in adult education following modernisation and state control aims and conceptual elements. The findings show that both countries promote adult education as a strategy for modernisation and competitiveness in line with European Union guidelines but that there is a lack of evidence concerning democratic and emancipatory policies in adult education.
Flexibilisation of Adult Learning and Education in the context of shifting temporalities in Nigeria and Germany
Authors: Schmidt-Lauff Sabine , Schwarz Jörg , Femi-Aderinto Adedolapo , Olatunji Taiwo
Published: February 2019

In his theory of acceleration, Rosa (2013) describes how modern societies have recently been going through a severe change in temporalities. This new dynamic confronts providers in Adult Learning and Education (ALE) with the challenge to not only adapt to shifting temporalities regarding their own processes and structures but also to support learners in adapting to a new ‘pace of life’. One way of reacting to social acceleration can be considered flexibilisation. In our contribution, we compare ALE in Nigeria and Germany to investigate how social acceleration takes effect in both societies, what challenges result for ALE and how ALE providers react in terms of flexibilisation. By examining policy papers, recent empirical studies and data reports, we can show how shifts in temporalities cause similar challenges in both countries and that they appear as a driver for the flexibilisation of ALE.
Recognition of Prior Learning
Authors: Singh Shalini , Ehlers Søren
Published: February 2019

This comparative study based on policy documents and statistical data analyses how the implementation of Recognition of Prior Learning policy designs has developed in two contrasting contexts (cases), Denmark and India, using the conceptual formulations of Ehlers’ Box Model (2005), the Integrated Implementation Model (Winter, 2012), and Policy Instruments (Vedung, 1998). As requirements for effective policy implementation, the authors argue for the involvement of all stakeholders, ownership and accountability by stakeholders leading to effectiveness in the short run and policy evolution in the long run, and the use of an appropriate mix of policy instruments.
Validade critério do Netherland Physical Activity Questionnaire para crianças
Authors: Damasceno Vinicius De Oliveira , Rabelo André Scotti , Lamounier Joel Alves , Szmuchrowski Leszek Antoni , Couto Bruno Pena , Souza Danilo Edson de , Gonçalves Reginaldo
Published: February 2019

Physical activity measurement with accuracy and precision is extremely important in establishing the dose-response relationship between levels of physical activity and the different outcome possibilities. Subjective methods of measurement, such as proxy-reports have been used as a possibility to check physical activity in children. The aim of this study was to test the Netherlands Physical Activity Questionnaire (NPAQ), valid for Brazilian schoolchildren using physical aerobic fitness as a criterion. The study included 290 children aged 6-10 years from public schools of Itaúna/MG. NPAQ was applied to parents or guardians and children were tested using the Luc Léger test. NPAQ had mean score of 25 for children (25 for boys and 24 for girls) and VO2max was 50.8 ml/kg/min for children (52.6 and 50.2 ml/kg/min for boys and girls, respectively). The Spearmam correlation test showed significant correlation (rsho = 0.146; p = 0.013) between NPAQ and VO2max, but the correlation is weak (Kappa -0.14). The results showed that NPAQ presented poor construct validity for physical activity measurement in a Brazilian schoolchildren sample, based on aerobic physical fitness criteria.
Motives for sports practice in young soccer and volleyball athletes
Authors: Vignadelli Lidyane Zambrin , Ronque Enio Ricardo Vaz , Bueno Maria Raquel De Oliveira , Dib Luiz Roberto Paez , Serassuelo Junior Helio
Published: February 2019

The reasons why athletes, especially young people, seek to adhere to sports practice has aroused the interest of research. The aim of this study was to identify the reasons for the sports practice of young soccer and volleyball athletes according to gender, age, family economic class, practice time and level of competitiveness. 188 athletes, 56 volleyball athletes and 132 soccer players aged 10-16 participated in the study. The reasons for the sport were identified through the Participation Motivation Questionnaire (PMQ). The data were analyzed through Covariance Analysis. The results indicated that, in general, the most important reason for sports practice was “Technical Competence” (4.51±0.54), followed by factors of intermediate importance: “Competition” (4.30±0.73), “Group Activity” (4.29±0.71) and “Physical Fitness” (4.25±0.64). Low-income families (C) attributed greater importance to the motivation factors related to “Social Recognition” and “Group Activity”. Athletes with lower practice time conceded less relevance to “Group Activity” and “Affiliation”, while those with a national competitive level demonstrated greater importance to all motivation factors, with the exception of “Competition.” Young athletes have been motivated to practice sports, especially for reasons related to self-realization, improvement of technical skills and overcoming challenges. Differences were also identified between family economic class groups, practice time and competitive level in the motivation factors for sports practice.
Constant and random practice on learning of volleyball serve
Authors: Ugrinowitsch Herbert , Matos Cíntia De Oliveira , Neves Thiago Fernandes , Lage Guilherme Menezes , Ribeiro-Silva Patrick Costa , Cruz Madson Pereira
Published: February 2019

The type of practice can influence what is learned from a motor skill. The aim of this study was to investigate the effects of the constant and random practice on the learning of Generalized Motor Program and parameters of the volleyball serve. The sample was composed of 20 children between 10 and 12 years old. The participants performed a pre-test whose score was adopted to counterbalance two groups (n=10), random practice and constant practice. During the acquisition phase, the random group performed 252 serves from three different positions, always indicated at the end of each serve, and the constant group performed all serves from only a specific position. The retention test showed that both groups learned the Generalized Motor Program, but random practice conducted to higher parameterization learning, resultant from the variable of practice. During practice of a sport motor skills, although the constant and random practice improve the learning of Generalized Motor Program, only the random practice improves learning of parameters of the motor skill.
Fatores associados aos componentes do fenótipo de fragilidade entre idosos hospitalizados
Authors: Silva Lorraine Cristina , Pegorari Maycon Sousa , Dias Flavia Aparecida , Marchiori Gianna Fiori , Tavares Darlene Mara dos Santos
Published: February 2019

The aim of this study was to verify the factors associated with the frailty phenotype components among hospitalized elderly patients. This is a cross-sectional and analytical study with 255 elderly patients admitted to the Medical and Surgical Clinic units at a General Hospital of Uberaba-MG. The following instruments were used: Frailty phenotype according to Fried, Scales (Short Geriatric Depression, Katz and Lawton and Brody) and structured questionnaire with socioeconomic and health data. Descriptive, bivariate and logistic regression analyses were performed (p <0.05). The frailty phenotype components with the highest percentages were slow gait speed (40.0%) and self-report of exhaustion and/or fatigue (38.8%). The following associated factors were identified: self-report of exhaustion and/or fatigue [depression indicative (OR: 3.12; CI: 1.695.75)]; decreased muscle strength [advanced age (OR:2.20; CI: 1.40-3.47); absence of partner (OR: 1.86, CI: 1.02-3.39); inability to perform basic (OR: 2.38; CI: 1.27-4.44) and instrumental (OR: 2.53; CI: 1.29-4.97) activities of the daily living]; slow gait speed [women (OR:2.13; CI:1.16-3.92), advanced age (OR:2.90; CI:1.82-4.61), inability to perform instrumental activities of the daily living (OR:2.08; CI:1.14-3.77); and low level of physical  activity [advanced age (OR: 1.57; CI: 1.01-2.44)]. The frailty phenotype components were associated with socioeconomic and health variables. The identification of the factors associated to the frailty phenotype components demonstrates the relevance for the development of preventive strategies in order to postpone this condition as well as follow-up actions at this level of service.
Comparing Critical Thinking Dispositions of Students Enrolled In a College Level Global Seminar Course
Authors: Duncan Dennis W. , Haas Rainer , Ricketts John C.
Published: February 2019

In recent years, the discussion concerning critical thinking and problem solving among college
graduates and new industry hires has increased dramatically. A plethora of research has
discovered that college graduates entering the workforce are lacking in their ability to problem
solve and think critically. These attributes have been called some of the most necessary for an
individuals’ success in the 21st century. The purpose of this study was to identify the variance in
critical thinking disposition of students (undergraduate and graduate) enrolled in an
International course (Global Seminar) using the UF-EMI Critical Thinking Disposition
Assessment. Students representing the US, Italy, and Austria participated in this study (N=43).
Results indicate that the entire population fell within the typical ranges for UF-EMI scores for
all three constructs (Engagement, Cognitive Maturity, and Innovativeness) but would be
classified as weak overall. There was however a slight difference in mean scores when
comparing the US and European students. American students scored higher than the Italian
students for all three constructs and higher than the Austrian students for the Engagement and
Innovativeness constructs. These results warrant further research to determine how course
content, teaching methodologies, and experiential learning opportunities impact college
students’ critical thinking dispositions.
Scaling and balancing carbon dioxide fluxes in a heterogeneous tundra ecosystem of the Lena River Delta
Authors: Rößger Norman , Wille Christian , Holl David , Göckede Mathias , Kutzbach Lars
Published: February 2019

Abstract. The current assessments of the carbon turnover in the Arctic tundra are subject to large uncertainties. This problem can (inter alia) be ascribed to both the general shortage of flux data from the vast and sparsely inhabited Arctic region, as well as the typically high spatiotemporal variability of carbon fluxes in tundra ecosystems. Addressing these challenges, carbon dioxide fluxes on an active flood plain situated in the Siberian Lena River Delta were studied during two growing seasons with the eddy covariance method. The footprint exhibited a heterogeneous surface, and the mixed flux signal associated therewith could extensively be decomposed: respiratory loss and photosynthetic gain were not only modelled for the overall footprint, but also for each of two vegetation classes. This downscaling of the observed fluxes unveiled a differing seasonality in the net uptakes of bushes (0.89 μmol m−2 s−1) and sedges (0.38 μmol m−2 s−1) in 2014. That discrepancy, which was concealed in the net signal, resulted from a comparatively warm spring in conjunction with an early snow melt and a varying canopy structure. Thus, the representativeness of footprints may adversely be affected in response to prolonged unusual weather conditions. In 2015, when air temperatures on average corresponded to climatological means, both vegetation class-specific flux rates were of similar magnitude (0.69 μmol m−2 s−1). A comprehensive set of measures (e.g. phenocam) approved the reliability of the partitioned fluxes, and hence confirmed the utility of the flux decomposition for enhanced flux data analysis. This scrutiny encompassed insights into both the phenological dynamic of individual vegetation classes, plus their respective functional flux to flux driver relationships with the aid of ecophysiologically interpretable parameters. For the purpose of comparison with other sites, the decomposed fluxes were employed in a vegetation class area-weighted upscaling that was based on a classified high-resolution orthomosaic of the flood plain. In this way, robust budgets that take the heterogeneous surface characteristics into account were estimated. In relation to the average sink strength of various Arctic flux sites, the flood plain constitutes a distinctly stronger carbon dioxide sink. Roughly 42 % of this net uptake, however, was on average offset by methane emissions lowering the sink strength for greenhouse gases. With growing concern about rising greenhouse gas emissions in high-latitude regions, providing robust carbon budgets from tundra ecosystems is critical in view of the thawing permafrost, whose released carbon can impact the global climate for centuries.
Flooding in the Mekong Delta: Impact of dyke systems on downstream hydrodynamics
Authors: Thanh Vo Quoc , Roelvink Dano , van der Wegen Mick , Reyns Johan , Kernkamp Herman , Van Vinh Giap , Thi Phuong Linh Vo
Published: February 2019

Abstract. Building high dykes is a common measure to cope with floods and plays an important role in agricultural management in the Vietnamese Mekong Delta. However, the construction of high dykes cause considerable changes in hydrodynamics of the Mekong River. Therefore, this paper aims to assess the impacts of the high dyke system on water level fluctuation and tidal propagation on the Mekong River branches using a modelling approach. In order to consider interaction between rivers and seas, an unstructured modelling grid was generated, with 1D–2D coupling, covering the Mekong Delta and extending to the East (South China Sea) and West (Gulf of Thailand) seas. The model was manually calibrated for the flood season of the year 2000. To assess the role of floodplains, scenarios consisting of high dykes built in different regions of the Long Xuyen Quadrangle (LXQ), Plains of Reeds (PoR) and TransBassac were carried out. Results show that the percentage of river outflow at Dinh An sharply increases in the dry season in comparison to the flood season while the other Mekong estuarine outflows rise slightly. In contrast, the lateral river flows of the Mekong River system to the seas by the Soai Rap mouth and the LXQ decrease somewhat in the dry season compared to the flood season due to overflow reduction at the Cambodia–Vietnam border. Additionally, the high dykes in the regions that are directly connected to a branch of the Mekong River, not only have an influence on the hydrodynamics in their own branch, but also on other branches because of the connecting channel of Vam Nao. Moreover, the high dykes built in the PoR, LXQ and TransBassac regions are the most important factor for changing water levels at Tan Chau, Chau Doc and Can Tho, respectively. The LXQ high dykes result in an increase of daily mean water levels and a decrease of tidal amplitudes on the Song Tien (downstream of the connecting channel of Vam Nao). A similar interaction is also found for the the PoR high dykes and the Song Hau.
Dynamic Reliability Analysis of Rotary Steering Drilling System
Authors: Huang Leilei , Xue Qilong , Liu Baolin , Yang Chunxu , Wang Ruihe , Han Laiju
Published: February 2019

Abstract. Vibration and high shock are major factors in the failure of downhole tools. It is important to study the causes of vibration and shock formation to prevent failure of the drillstring and bottom hole assembly (BHA). At present, it is generally recognized that the vibration of drillstring is the main reason for the failure, especially the lateral vibration. In this paper, the bottom tool of Rotary Steering Drilling System (RSS) calculation model was established based on the secondary development of ABAQUS software. Starting from the initial configuration of drilling tool, considering the contact impact of drilling tool and borehole wall, the dynamic excitation of guide mechanism and the drilling pressure, torque, rotational speed, gravity, buoyancy, drilling fluid damping. The dynamic characteristics of the inherent frequency and dynamic stress of the bottom hole assembly (BHA) were calculated and analyzed, and risk assessment method based on the quantitative vibration intensity was established. The reliability of typical drilling tool is evaluated, which provides a reference for the optimization design of BHA of Rotary Steering Drilling System.
Approximate essential character amenability of Banach algebras
Authors: Shojaee Behrouz
Published: February 2019

Let A be a Banach algebra and ' be a character on A. The notions of approximate essential '-amenability  and approximate essential character '-amenability of A are introduced and some properties of such algebras are investigated. Then by means of some examples the distinctions between this new notions and essentially -amenability for A are shown.
Tarig Projected Differential Transform Method to solve fractional nonlinear partial differential equations
Authors: Bagyalakshmi Morachan , SaiSundarakrishnan G.
Published: February 2019

Recent advancement in the field of nonlinear analysis and fractional calculus help to address the rising challenges in the solution of nonlinear fractional partial differential equations. This paper presents a hybrid technique, a combination of Tarig transform and Projected Differential Transform Method (TPDTM) to solve nonlinear fractional partial differential equations. The effectiveness of the method is examined by solving three numerical examples that arise in the field of heat transfer analysis. In this proposed scheme, the solution is obtained as a convergent series and the result is used to analyze the hyper diffusive process with pre local information regarding the heat transfer for different values of fractional order. In order to validate the results, a comparative study has been carried out with the solution obtained from the two methods, the Laplace Adomian Decomposition Method (LADM) and Homotophy Pertubation Method (HPM) and the result thus observed coincided with each other. Inspite of the uniformity between the solutions, the proposed hybrid technique had to overcome the complexity of manupulation of Adomian polynomials and evaluation of integrals in LADM and HPM respectively. The methodology and the results presented in this paper clearly reveals the computational efficiency of the present method. Due to its computational efficiency, the TPDTM has the potential to be used as a novel tool not only for solving nonlinear fractional differential equations but also for analysing the prelocal information of the system.
Nonresonance conditions on the potential for a nonlinear nonautonomous Neumann problem
Authors: Sanhaji Ahmed , Dakkak A.
Published: February 2019

The aim of this paper is to establish the existence of the principal eigencurve of the p-Laplacian operator with the nonconstant weight subject to Neumann boundary conditions. We then study the nonresonce phenomena under the first eigenvalue and under the principal eigencurve, thus we obtain existence results for some nonautonomous Neumann elliptic problems involving the p-Laplacian operator.
A topological conjugacy of invariant flows on some class of Lie groups
Authors: Santana Alexandre J. , Stelmastchuk Simão N.
Published: February 2019

The aim of this paper is to classify invariant flows on Lie group $G$ whose Lie algebra $\mathfrak{g}$ is associative or semisimple. Specifically, we present this classification from the hyperbolicity of the lift flows on $G \times \mathfrak{g}$. Then we apply this construction to some special cases as ${\rm Gl}(2,{\Bbb R})$ and affine Lie group.
Fixed points of multivalued contractions via generalized class of simulation functions
Authors: Patel Deepesh Kumar
Published: February 2019

In this paper, considering a wider class of simulation functions some fixed point results for multivalued mappings in α-complete metric spaces have been presented. Results obtained in this paper extend and generalize some well known fixed point results of the literature. Some examples and consequence are given to  illustrate the usability of the theory.