bluuebunny/crossref_metadata_2025 huggingface dataset:
Modelling biomass of young and dense Scots pine (Pinus sylvestris L.) dominated mixed forests in northern Sweden
Authors: Repola Jaakko , Ahnlund Ulvcrona Kristina
Published: December 2014

Biomass models for the biomass of above-ground tree components of Scots pine ( L.), Norway spruce ( [L.] Karst.) and birch ( Roth and Ehrh.) in young dense Scots pine dominated forest stands in northern Sweden were constructed. Destructive above-ground biomass sampling was conducted in naturally generated young, dense, Scots pine dominated mixed stands. Three sampling campaigns were undertaken, the first in 1997 and 1998. The second was six years later (2003), and the last 13 years after the first (2010). In total, 280 trees (126 Scots pine, 68 Norway spruce and 86 birches) were sampled from six different stands in northern Sweden. The sampled treesâ diameter at breast height (dbh) was in the range 1â22 cm (Scots pine), 1â21 cm (Norway spruce) and 1â11 cm (birch). Biomass predictions were tested using our models and the widely used biomass models originally constructed for managed stands. The results showed that the biomass allocation to tree components is different in unmanaged and managed young stands; higher foliage biomass and lower stem and branch biomass were detected in the unmanaged stands. The overall conclusion is that the biomass models for managed stands did not produce satisfactory biomass estimates in unthinned, dense, young stands.Pinus sylvestrisPicea abiesBetula pendulaBetula pubescens
The Transmuted Inverse Exponential Distribution
Authors: Oguntunde Pelumi , Adejumo Olusola
Published: December 2014

This article introduces a two-parameter probability model which represents another generalization of the Inverse Exponential distribution by using the quadratic rank transmuted map. The proposed model is named Transmuted Inverse Exponential (TIE) distribution and its statistical properties are systematically studied. We provide explicit expressions for its moments, moment generating function, quantile function, reliability function and hazard function. We estimate the parameters of the TIE distribution using the method of maximum likelihood estimation (MLE). The hazard function of the model has an inverted bathtub shape and we propose the usefulness of the TIE distribution in modeling breast cancer and bladder cancer data sets.
Bringing Adam Smith’s pin factory to life: Field trips and discussions as forms of experiential learning
Authors: Galizzi Monica
Published: December 2014

Educators are often aware of the need to implement a variety of teaching techniques to reach out to students with different learning styles. I describe an attempt to target multimodal learners by bringing classical economic texts and concepts to life through discussions, field visits and role playing exercises.In my Labor Economics class I analyze the relationship existing between demand for labor, technological advances, and trade. As a foundation for such analysis, I assign the reading of Adam Smith’s The Wealth of Nations chapters regarding the division of labor. To increase students’ interest toward the topics, I precede the text discussion with a field visit to a museum of industrial revolution. Here students are asked to participate also as “factory workers” to an assembly line exercise that brings Smith’s description of a pin factory to life. They are then asked to reflect on this experience and to use it as a foundation to inform the following class discussions about Smith’s chapters.In this paper I describe the main learning and retention objectives of this exercise, its implementation, challenges, and students’ learning outcomes and feedback about enjoyment and recollection. Field trip participants performed significantly better when tested on the relevant concepts. I also discuss the rewards and institutional challenges associated with making use of community resources to increase the understanding of the concrete applications of the economics concept we teach.
Trauma Treatment in Young Children with Developmental Disabilities: Applications of the Child-Parent Psychotherapy (CPP) Model to the Cases of "James" and "Juan"
Authors: Harley Eliza K. , Williams Marian E. , Zamora Irina , Lakatos Patricia P.
Published: December 2014

This case study series investigates the application of the Child-Parent Psychotherapy (CPP) model for young children with developmental disabilities who were exposed to trauma.  Two Latino clients and their families were selected for systematic write-up: "James," 14 months old  who, following medical trauma (surgery and stroke) showed global developmental delays; and "Juan," 6 years 2 months old with autism in the context of early exposure to domestic violence  and a history of physical and emotional abuse. Utilizing the CPP model, we addressed the families’ histories of traumatic events, including domestic violence, medical trauma, and attachment concerns associated with parental adjustment to diagnosis.  The CPP model was selected with the goal of strengthening the relationship between each child and his caregivers; restoring the child’s sense of safety, attachment, and appropriate affect; and improving the child’s behavioral and social functioning.  Clinical insights regarding the application of the CPP model for young children with developmental disabilities who were exposed to trauma are offered. In addition, cultural applications for Latino families are explored.
Existence results for fractional p-Laplacian
problems via Morse theory
Authors: Iannizzotto Antonio , Liu Shibo , Perera Kanishka , Squassina Marco
Published: December 2014

We investigate a class of quasi-linear nonlocal problems, including
as a particular case semi-linear problems involving the fractional Laplacian
and arising in the framework of continuum mechanics, phase transition phenomena,
population dynamics and game theory.
Under different growth assumptions on the reaction term, we obtain
various existence as well as finite multiplicity results by means of variational and topological
methods and, in particular, arguments from Morse theory.
Nonlinear tensile creep behavior of radiata pine at elevated temperatures and different moisture contents
Authors: Pearson Hamish , Ormarsson Sigurdur , Gabbitas Brian
Published: December 2014

Tensile wood creep has not been measured previously in the temperature region 135°C–150°C for a range of moisture content (MC) up to fiber saturation point due to equipment and measurement challenges. Yet this is the region where the most dramatic softening effects can be observed. The aim of this study was to develop specialized equipment to measure tensile solid wood creep over 70°C–150°C for a range of MC and loads. Creep displacement was successfully able to be isolated from elastic and mechanosorptive strains and statistically modeled by regression analysis. This proved more accurate than complex series expansions consisting of spring- and dashpot-type components. The best creep displacement relationship was a power law with a strain root mean square error of 0.28%. The amplitude of the power law was nonlinear with respect to stress and temperature and changed by a stress factor of up to 0.9 for a stress of up to 1.2 MPa and by a temperature factor 1.2–6.3 over the investigated range. The creep relationship provides a valuable tool for predicting time-dependent distortion and internal stress of wood during drying or thermohygromechanical modification below 150°C.
An efficient timing device to record activity patterns of small mammals in the field
Authors: Ferreira Mariana Silva , Vieira Marcus Vinícius
Published: December 2014

We propose a simple, accurate, and inexpensive timing device to record the activity patterns of small mammals in the field using live traps. The present timing device can be used in cage-type live traps. It is built from commercially available components and does not require special skills to construct. The device is set outside the trap and does not need to be permanently affixed or require drill perforations, as others devices do. This device is easily incorporated into long-term monitoring studies to provide temporal information about small mammal populations without affecting their behavior.
Regulation of cancer-related pathways by protein NEDDylation and strategies for the use of NEDD8 inhibitors in the clinic
Authors: Abidi Naima , Xirodimas Dimitris P
Published: December 2014

Post-translational modification of proteins with ubiquitin and ubiquitin-like molecules (UBLs) controls a vast if not every biological process in the cell. It is not surprising that deregulation in ubiquitin and UBL signalling has been implicated in the pathogenesis of many diseases and that these pathways are considered as major targets for therapeutic intervention. In this review, we summarise recent advances in our understanding of the role of the UBL neural precursor cell expressed developmentally downregulated-8 (NEDD8) in cancer-related processes and potential strategies for the use of NEDD8 inhibitors as chemotherapeutics.
Fenomenología y neurociencias: interacción y equívocos
Authors: Anton Mlinar Ivana
Published: December 2014

La fenomenología comprende una perspectiva encarnada de primera persona al distinguir entre cuerpo como objetividad [Körper] y cuerpo animado [Leib], aquél que es tanto cuerpo físico como “portador” de un yo, que, por ello, se revela como órgano de la percepción y cumple funciones constituyentes. De allí que las ciencias cognitivas hayan tomado una serie de elementos descriptivos y perspectivas de análisis que, junto con recientes descubrimientos neurológicos, han promovido conclusiones que comportarían una asimilación o reducción de la perspectiva de primera persona a la de tercera persona, de la motivación a la causalidad, en definitiva, de naturalización de la intencionalidad; conclusiones cuya legitimidad resulta cuestionable en el marco del propio instrumental fenomenológico al que recurren.DOI http://dx.doi.org/10.15304/ag.34.1.1373
Una propuesta dialógica para el debate en torno al dopaje
Authors: Lopez Frias Francisco Javier
Published: December 2014

En este artículo se analizan los diversos argumentos en contra de levantar la prohibición contra el dopaje. A través de este análisis se concluye que ninguno de los argumentos es conclusivo por sí mismo, sino que todos y cada uno de ellos aportan un criterio normativo que ha de ser tenido en cuenta en los debates morales en torno al dopaje.DOI  http://dx.doi.org/10.15304/ag.34.1.1644
Benjamin y Wittgenstein. Una aproximación morfológica
Authors: Delgado Rojo Jose Luis
Published: December 2014

El presente trabajo explora la posible afinidad de método entre las obras de Walter Benjamin y Ludwig Wittgenstein. El intento por parte de Benjamin de desarrollar un nuevo método de representación histórica gravita en torno a la categoría de “origen”, la cual sostiene sus más importantes trabajos de investigación histórica. En paralelo al trabajo de Benjamin, Wittgenstein dedicó una especial atención al problema de una exposición filosófica de los fenómenos, en especial en sus investigaciones sobre el lenguaje, a través de categorías como la “representación perspicua” o la “visión de aspectos”. La filiación común de la reflexión de ambos autores en la morfología de Goethe nos permitirá definir el perfil de un posible enfoque estético para la investigación filosófica, dirigida a captar la generalidad de los fenómenos sin renunciar a salvaguardar su singularidad única.DOI  http://dx.doi.org/10.15304/ag.34.1.1664
De las máquinas totalitarias al "Capitalismo emocional". Consideraciones en torno a la "impostura de la desinhibición"
Authors: García Ferrer Borja
Published: December 2014

Frente a la reverberación del mito de la autonomía personal en el acervo posmoderno, exploramos las nuevas tecnologías del poder para someternos a una subjetivización coactiva y heterodirigida, toda vez que nuestro sistema de los afectos se revela, a tenor de la evolución experimentada por el sistema capitalista, infinitamente más decisivo que cualquier armadura ideológica al respecto. En un horizonte marcado por la innovación y la seducción, la dictadura invisible del Capital pivota cada vez más sobre la producción y deshinibición del deseo, al abrigo de técnicas cuyas prerrogativas no se limitan a producir sistemáticamente instrumentos de trabajo y bienes de consumo, sino que también nos manipulan y determinan.DOI  http://dx.doi.org/10.15304/ag.34.1.1973
La naturaleza de la lengua (Discurso de ingreso a la Academia Mexicana de la Lengua)
Authors: Díaz Gómez José Luis
Published: December 2014

DOI  http://dx.doi.org/10.15304/ag.34.1.2215
Estudio de la epéntesis en el aprendizaje de cabezas silábicas complejas en inglés por hablantes de español: aproximación al marco de la Teoría de la Optimidad
Authors: San Segundo Fernández Eugenia
Published: December 2014

En este trabajo hemos intentado mostrar cómo un modelo optimalista puede aplicarse a un estudio de la variación en la interlengua de hispanohablantes que están aprendiendo inglés. En concreto, nos hemos centrado en el fenómeno de epéntesis vocálica en inicio de sílaba ante secuencia s + consonante. Se ha aplicado el algoritmo del aprendizaje gradual de Boersma y Hayes (2001), siguiendo el modelo de variación de tres gramáticas de Cutillas (2004). En el análisis de los resultados, observamos que, para nuestras dos informantes, las restricciones de sus respectivas gramáticas presentan bandas de rigurosidad que se solapan, y se proponen algunas explicaciones para este hecho.DOI http://dx.doi.org/10.15304/verba.41.1045
Restricciones de aspecto léxico impuestas por los complementos temporales en español
Authors: Martínez Atienza María
Published: December 2014

En este trabajo demostraremos que al combinar distintos tipos de predicados desde el punto de vista del aspecto léxico, modo de acción o Aktionsart con complementos temporales introducidos por la preposición desde, que indican el límite inicial del evento, han de cumplirse determinadas condiciones que vienen impuestas por el propio complemento temporal. Esto es, comprobaremos que las características accionales de los predicados están determinadas por el complemento con el que se combinan.DOI http://dx.doi.org/10.15304/verba.41.1185
El foco informativo y la posición sintáctica de los depictivos orientados al sujeto en español
Authors: Heidinger Steffen
Published: December 2014

En este artículo analizamos la posición sintáctica de los depictivos orientados al sujeto (DOS) - como cansado en Juan llegó cansado al partido - con respecto a otros constituyentes posverbales como el objeto directo (Od) y los adjuntos locativos (LOC). La base empírica de nuestro estudio resulta de un experimento de producción en el que consideramos de manera sistemática el factor del foco informativo (36 participantes, realizado en Córdoba/España, febrero 2012). Los principales resultados acerca de la relación entre el foco informativo y la posición sintáctica del DOS frente a Od y LOC son: 1) La posición no marcada de los DOS depende de la función sintáctica del segundo constituyente: en el contexto de un Od, el orden no marcado es …-Od-DOS, mientras que en el contexto de un LOC es …-DOS-LOC. 2) Los tres constituyentes - DOS, LOC y Od - aparecen en la mayoría de las ocasiones en posición final cuando son el foco estrecho de la oración. 3) Muchos autores sostienen que en español el foco informativo debe estar en posición final de la oración. Según nuestros datos, la posición final es la posición preferida para el foco informativo, pero la focalización estrecha no implica la posición final del constituyente respectivo. 4) La posición del DOS depende decisivamente de la estructura informativa de la oración correspondiente; por eso, la estructura informativa debe incluirse en la determinación de la posición sintáctica y en la descripción de los órdenes.DOI http://dx.doi.org/10.15304/verba.41.1501
La elección del caso pronominal en dos corpus orales puertorriqueños
Authors: Aleza Izquierdo Milagros
Published: December 2014

Esta investigación tiene por objeto un estudio contrastivo del uso de los pronombres átonos (clíticos) en dos corpus orales de Puerto Rico que corresponden a dos generaciones distintas. Ya que este país es uno de los distinguidores de caso, resulta especialmente interesante conocer con qué verbos y en qué estructuras se documentan ambos casos o se ve favorecido el dativo en lugar del acusativo, con el fin de comprobar si existen factores específicos que condicionan la elección del pronombre. Para ello, abordamos el uso de los clíticos de tercera persona  en verbos o construcciones transitivas y de caso reinterpretado.DOI http://dx.doi.org/10.15304/verba.41.1667
Prefixaçâo e composiçâo: fronteiras de um contínuo
Authors: Rio-Torto Graça
Published: December 2014

Neste texto analisam-se os critérios que diferenciam prefixos de constituintes de compostos, tomando por base dados da língua portuguesa contemporânea. Dos critérios apontados, consideram-se mais distintivos em termos de tipologia de constituintes e de processos (i) a lexicalidade ou seja, a especificação categorial e morfológica do constituinte, as restrições (maior ou menor amplitude) de seleção em termos lexicais, os semânticos e os distribucionais; os critérios prosódicos são menos relevantes. Defende-se a existência de uma escala em contínuo dos processos que envolvem prefixação e composição.DOI http://dx.doi.org/10.15304/verba.41.1786
On the optimal control force applied to tuned mass dampers for multi-degree-of-freedom systems
Authors: Anh Nguyen Dong , Sang Nguyen Chi
Published: December 2014

The design of active TMD for multi-degree-of-freedom systems subjected to second order coloured noise excitation is considered using the linear quadratic optimal theory. A detailed numerical study is carried out for a 2-DOF system. It is shown that the effectiveness of active TMD is better than the one of passive TMD.
The Poincaré method for an oscillator with quadratic nonlinearity
Authors: Dinh Nguyen Van , Tri Tran Duong
Published: December 2014

In [2], to evaluate free oscillation period of an undamped oscillator with large cubic restoring nonlinearity, a modified Poincare method has been proposed. There, in the neighborhood of the free oscillation of interest, the strongly nonlinear system under consideration is assumed to be near certain linear one with unknown (to be evaluated) frequency. In the present paper, we deal with the case of quadratic non-linearity. An additional modification is introduced consisting in the elimination of constant derivation and second harmonic terms. The results obtained show that the domain of application of the Poincare method can be enlarged.
Beam element for large displacement analysis of elasto-plastic frames
Authors: Kien Nguyen Dinh , Quang Do Quoc
Published: December 2014

The present paper develops a non-linear beam element for analysis of elastoplastic frames under large displacements. The finite element formulations are derived by using the co-rotational approach and expression of the virtual work. The Gauss quadrature is employed for numerically computing the element tangent stiffness matrix and internal force vector. A bilinear stress-strain relationship with isotropic hardening is adopted to update the stress. The arc-length technique based on the Newton-Raphson iterative method is employed to compute the equilibrium paths. A number of numerical examples is employed to assess the performance of the developed element. The effects of plastic action on the large displacement behavior of the structures as well as the expansion of plastic zones in the loading process are discussed.
On a variant of the asymptotic procedure (II: Weakly nonlinear non-autonomous systems)
Authors: Dinh Nguyen Van
Published: December 2014

A variant of the asymptotic method is proposed to construct steady solution of weakly nonlinear non-autonomous oscillating systems. The amplitude and the diphase angle of order \(\varepsilon^0\) are used as variables, the uniqueness of the asymptotic expansions is assured by stationarity conditions.
Phenomenological model for determining velocity field of LPG jet in combustion chamber of direct injection S.I. engine
Authors: Ga Bui Van , Tho Phung Xuan , Quang Nhan Hong , Huong Nguyen Huu
Published: December 2014

A phenomenological model has been established to predict the velocity distribution of LPG (Liquefied Petroleum Gas) jet in combustion chamber of spark ignition (SI) engine. A shaped coefficient \(\beta\) governing the similarity of velocity profiles of LPG jets has been defined based on the theoretical and experimental analyses of turbulent diffusion jets. The results show that \(\beta\) is constant for steady jet but it is not the case for unsteady one. The model will enable us to calculate the velocity profiles of LPG jet after ending injection. This is necessary for research of stratified combustion in direct injection LPG SI engines.
The method of determining internal forces at any cross section of links in mechanisms
Authors: Sanh Do , Khoa Do Dang
Published: December 2014

In the paper it is introduced a method of determining internal forces at any cross section of the links of mechanisms. As known, so far it is used the method of D'Alembert, which consists of two steps, the determination of the acceleration states of links and the establishment of the equilibrium equations for the set of forces including the forces of inertia and the internal forces at the cross section. A. I. Lurie proposed a method of analytical mechanics for this problem. Its concept is to make a new system called the released one by cutting the link at a cross section under consideration and adding some coordinates. Only one condition putting restriction on the released system is the additional coordinates must equal zero. Under this restriction the new created system is coincided to the original one. This restriction is equivalent to put the mechanical constraints, whose reaction forces are the components of internal forces at the cross section under consideration. It is necessary emphasize that the Lurie's method is convenient only for opened loops, but is not applied for closed ones. Moreover, the Lagrange's multiplier equations applied by A. I. Lurie are unsuitable. In this paper it is presented the generalized Lurie's method, which is applied for the opened and closed loops by using the Principle of Compatibility.
A modified asymptotic method for a Van-der-Pol oscillator with large cubic restoring nonlinearity
Authors: Dinh Nguyen Van
Published: December 2014

A modified asymptotic method is proposed and applied to evaluate the frequency of self-excited oscillation in a Van-der-Pol oscillator with large cubic restoring nonlinearity. The result obtained can be used for large enough nonlinearity.
On a variant of the asymptotic procedure (weakly nonlinear systems in a special cases)
Authors: Dinh Nguyen Van
Published: December 2014

The variant the asymptotic procedure presented in [2, 3] is applied to oscillating systems in a special case.
3D unsteady turbulent flow analysis in a Francis turbine runner at nominal and off-design operating conditions
Authors: Loan Pham Thi Kim , Ga Bui Van
Published: December 2014

This paper presents the use of a commercial Navier-Stokes turbulent flow code (FLUENT) as a mean to evaluate the behavior of a Francis turbine runner for the design and off-design conditions. The flow in the runner is analyzed numerically at different operating points. The numerical results permit to observe physical phenomena in the runner that are important in the process of hydraulic turbo machinery design. Values of different velocity components in the flow, blade pressure distribution ... given by the model are compared with experimental data at nominal and off-design flow conditions. Computer resource involves in the flow analysis should be compatible with the need of design process of a runner. Therefore 12 hours of CPU time can be considered as acceptable for calculating at each operating point on a computer workstation of medium size power.
Using an electro-mechanical system to investigate the influence of the fatigue on the energy dissipated per cycle due to the hysteresis damping
Authors: Thinh Van Huu , Hung Nguyen Xuan
Published: December 2014

The energy dissipated per cycle due to the hysteresis damping is one of the criteria for determining the vibration system. The experimental results reveal that the energy dissipated per cycle increases versus the cycles to fatigue of the rotating-beam steel specimen.
Applying the genetic algorithm and the consequential convex approximation programming for composite structure optimization
Authors: Trung Nguyen Thoi , Phong Ngo Thanh
Published: December 2014

This paper applies the genetic algorithm and consequential convex approximation programming to deal with problems of minimizing the strain energy of a linear elastic fiber reinforced composite laminate in a state of plane stress. The directions of fibers are used as design variables. From the numerical results, an evaluation of two optimization techniques is performed.
Buckling analysis of laminated cylindrical composite shell panel under mechanical and hygrothermal loads
Authors: Thinh Tran Ich , Ngoc Le Kim
Published: December 2014

This paper deals with buckling of analysis multilaminated cylindrical shell panels subjected to axial and hygrothermal loadings. The geometrical non-linear analysis is carried out using the Finite Element Method based on a single layer first shear deformation theory. A nine-nodal isoparametric element with 5 degrees of freedom per node is considered. The effects of different number of layers, lamination angles, length to width ratios and hygrothermal effects are studied.
Comparison of velocity distribution in turbulent diffusion jet given by the integral model and code CFD FLUENT 6.0
Authors: Ga Bui Van , Loan Pham Thi Kim , Quang Nhan Hong
Published: December 2014

Integral model is simple in utilization, low in CPU time calculation, suitable for a lot of practical applications of turbulent diffusion jet. However the assessment of accuracy of the model should be carried out by experimental data and by results of available multidirectional codes. The present paper shows the comparison of velocity profiles given by the integral model and the CFD FLUENT 6.0 Code. The difference in results given by the two models is lower than 10% when Reynolds number at the exit nozzle below 5000.
Principle of compatibility and non-generalised coordinates
Authors: Phong Dinh Van
Published: December 2014

The contribution is devoted to using so-called non-generalised coordinates for deriving the system of equations of motion. Differently from common techniques for constrained mechanical systems the principle of compatibility is chosen as the tool. This takes the advantage in the possibility for extension to systems with nonideal constraints, however, the special treatment is needed. In the article the author derived the theoretical basis as well as numerical algorithms concerning the combination of nongeneralised coordinates with the principle of compatibility. Some comparisons of the technique under consideration and usual technique using Lagrange multipliers are discussed. Some examples are shown for illustration. The case of contact of moving disc on the surface is given in detail
Plastic damage evolution in multilayer coatings/ductile substrate system under spherical indentation: Influence of a metallic interlayer
Authors: Quy Le Minh , Thinh Tran Ich
Published: December 2014

Spherical indentation problems of ceramic coatings/metallic inter-layer/ductile substrate were investigated numerically by axisymmetric finite element analysis (FEA) for two typical ceramic coatings with relatively high and low elastic modulus deposited on aluminum alloy and carbon steel. Various indenter radius-coating thickness ratios and interlayer thickness-coating thickness ratios were used in the modeling. Plastic damage zone evolution were discussed in connection with model parameters. The results' showed that the suitable metallic interlayer could improve resistance of ceramic coating systems through reducing the plastic damage zone size in the substrate under spherical indentation.
Two dimension numerical modeling of wave and wind induced currents and bed morphology evolution at Phan Ri - Binh Thuan coastal zone
Authors: Hoan Le Xuan , Nam Pham Thanh
Published: December 2014

Based on the 2DH model for calculating the wave induced currents, established by Christopher G. Koutitas [1], a 2DH numerical model for calculating the wave and wind induced currents (current-model) is developed with taking additional account of shear stress due to wind and eddy viscosity components. A 2DH numerical model for calculating the sediment transport and bed morphology evolution (sand-model) is developed and linked to the above current- model. The wave parameters used for the input of the models are obtained from the RCPWAVE model. This paper presents some numerical results of calculating the currents induced by wind and waves and bed morphology evolution at Phan Ri – Binh Thuan coastal zone for two typical cases of wind: NE and SW monsoons.
Suspended sand transport in different conditions of temperature and salinity
Authors: Chung Dang Huu
Published: December 2014

A study on the action of temperature and salinity on the distribution of suspended sand concentration and transport rate has been carried out through a lDV model with a proposed formula of the kinematic viscosity. Five tests of the data sets from the Delta flume with three different cases of temperature and salinity were used for the simulation. The results of computation showed that the vertical distributions of suspended sand concentration depend on salinity and specially, on temperature. When temperature increases or salinity decreases, the settling process of particles occurs faster. For fine sand, the discrepancy on transport rates due to temperature or salinity decreases with wave height. For coarse sand, the effect of temperature and salinity is not much affected by the wave height. The lDV model showed good ability to simulate the time-averaged suspended sand concentrations and hence the suspended transport in the ripple regime, provided that the reference concentration near the bed and the vortex-related mixing are represented with sufficient accuracy. Therefore; it can be used effectively to study the behaviour of some physical parameters on the transport.
Noncommutative deformation and a topological nature of Koiter singularity
Authors: Khoa Trinh Van
Published: December 2014

In this paper we constructed the model of noncommutative plastic deformation and give the proof of Koiter hypothesis. We showed, that the occurrence of Koiter singularity has topological reasons and the number of Koiter singularities - is the topological Pontriagin number.
On the high resolution regional weather forecast model (HRM) and forecasting tropical cyclone motion over the south china sea
Authors: Duc Le , Thang Le Cong , Xin Kieu Thi
Published: December 2014

Chan (1995) [2] has found that, only 70% in 60 cases of the tropical cyclone (TC) movement test (TMT-90) developed from steering flows. The 30% remain of cases have to be explained by nonbarotropic processes. We are of the opinion that all weak, slow-moving and unexpected changing TCs over the South China Sea are in this 30% set. The nonlinear interaction between barotropic and nonbarotropic processes has affected on motion and structure of such TCs. In this paper, we use the high resolution weather forecast model (HRM), which is able to simulate meso-scale phenomena in limited regions, to predict motion of TCs in the South China Sea in 2002-2004, including two typical weak, slow-moving and unexpected changing TCs Mekhala and Nepartak. We have chosen two forecast domains with different areas and resolutions. The results show that with the smaller domain, appropriate buffer and higher resolution HRM can predict better motion of TCs operating in the South China Sea.
Balancing conditions of planar mechanisms with multi-degree of freedom
Authors: Khang Nguyen Van , Dien Nguyen Phong , Son Pham Van
Published: December 2014

This paper presents a new method for deriving the balancing conditions of planar mechanisms with multi-degree of freedom. The method has advantage of being suitable for the application of the widely accessible computer algebra systems such as MAPLE. In the example, the conditions for complete shaking force and shaking moment balancing of a planar five-bar linkage are given.
Deformation of medium having string structure
Authors: Khoa Trinh Van
Published: December 2014

In this paper we constructed a model of plastic deformation of the medium having string structure. The knot theory was used to classify the plastic state.
The elastoplastic problem of the half-space with a hole subjected to axially symmetric loading
Authors: Long Vu Do
Published: December 2014

The elastoplastic problem of the half-space with a hole subjected to axially symmetric loading considered in this paper is based on the elastoplastic deformation process theory. Solution of this problem is carried out by using the modified elastic solution method and the finite element method. Some results of numerical calculation are presented here to give the picture of plastic domains enlarging in the body and the obtained displacements on the free boundary of the half-space.
INDICADORES DE PRODUÇÃO CIENTÍFICA - SÉRIE HISTÓRICA 2000-2004 CEFET-RN
Authors: Leite José Yvan Pereira , Araújo André Luis Calado , Santos Jerônimo Pereira dos , Monte Glauco Teixeira do
Published: December 2014

Este trabalho apresenta um resgate histórico da implantação das ações da pesquisa no CEFET-RN. Mostra a distribuição dos grupos de pesquisa em atuação em 2004 e analisa a distribuição por gerência educacional, por sexo, pela inserção docente em grupo de pesquisa e pela titulação. Estes dados são confrontados com a produtividade dos pesquisadores em relação à gerência educacional e ao grupo em que está vinculado. É observado um crescimento de 155% dos grupos de pesquisa, atualmente em número de 23, como também um aumento significativo da titulação e a produtividade crescem suavemente. Cerca de 27% dos docentes estão inseridos nos grupos de pesquisa, sendo que a Gerência de Recursos Naturais apresenta 80% dos seus docentes em grupos e sua produção intelectual representa 56% da produção Institucional no período de 2000-julho/2004. A relação de doutores e estudantes por grupo de pesquisa é de 0,6 com crescimento, respectivamente de 27,2% e 149,5% no período de 2002-julho/2004. Palavras Chaves: Grupos de Pesquisa; pesquisador; produtividade; desenvolvimento; CEFET-RN.
REPENSANDO A AGRICULTURA: O ENFOQUE DA SUSTENTABILIDADE COMO PADRÃO ALTERNATIVO À AGRICULTURA MODERNA
Authors: Souza Francisco das Chagas Silva
Published: December 2014

A modernização da agricultura ocorrida nos países em desenvolvimento, na segunda metade do século XX, trouxe como efeito o aumento da produção agrícola, porém agravou

os danos ambientais e os problemas sociais. Este artigo tem como objetivo analisar a agricultura sustentável, apresentando-a como uma alternativa viável para a redução dos problemas advindos com a Revolução Verde. A coleta de informações foi realizada através de revisão bibliográfica. Concluímos que a agricultura sustentável supera a concepção de desenvolvimento agrícola associado principalmente ao aumento da produtividade. Seu principal objetivo é a manutenção da produtividade agrícola com o mínimo possível de impactos ambientais e com retornos econômico-financeiros adequados à meta de redução da pobreza atendendo, dessa maneira, às necessidades sociais e econômicas das populações rurais.

Palavras-chaves: agricultura, sustentabilidade, impactos, desenvolvimento, agroecologia.
A RESPONSABILIDADE SOCIAL DO PODER PÚBLICO NA INDUÇÃO DO DESENVOLVIMENTO SUSTENTÁVEL: O GÁS NATURAL EM MOSSORÓ-RN
Authors: Santos Jailton Barbosa dos , Sousa Aécio Cândido de
Published: December 2014

A noção de desenvolvimento, em nossos dias, incorpora a seu campo de discussão a responsabilidade do Estado, enquanto indutor do crescimento econômico e o uso de fontes

energéticas viáveis ecológica e economicamente, para que se concretize o desenvolvimento sustentável. Neste contexto, o gás natural surge como “energia limpa” e propõe substituir

os combustíveis fósseis líquidos, em diversos setores produtivos. Nesse trabalho, estudamos as políticas públicas elaboradas a partir da utilização do gás natural e a

sustentabilidade do desenvolvimento em Mossoró-RN. Na pesquisa, recorremos a dados primários e secundários, que permitiram identificar a cadeia produtiva do gás em expansão,

as ações de investimento do poder público para o setor e a geração de emprego e renda. As políticas públicas de incentivo ao uso do gás natural em Mossoró podem se constituir numa importante ferramenta indutora do desenvolvimento, desde que sejam planejadas com

articulação do setor produtivo e de toda a sociedade.

Palavras-chaves: Estado, Poder Local, Desenvolvimento, Sustentabilidade, Políticas Públicas, Gás Natural.
A BIOTECNOLOGIA DOS TRANSGÊNICOS: PRECAUÇÃO É A PALAVRA DE ORDEM
Authors: Alves Gilcean Silva
Published: December 2014

Os transgênicos, ou Organismos Geneticamente Modificados (OGMs), são aqueles com material genético alterado pelo homem através da transferência de um gene de uma espécie

para outra. Eles surgiram a bem a pouco tempo, na década de 70, e rapidamente alcançaram o mundo, principalmente os alimentos. Apesar disso, ainda é grande a polêmica em torno

do assunto. Da medicina, a biotecnologia passou para a agricultura, onde proliferou. A discussão sobre esses alimentos está longe de alcançar consenso. Enquanto para alguns a nova tecnologia é uma certeza de desenvolvimento, para outros muito ainda deve ser esclarecido sobre os reais impactos no meio ambiente, na saúde, política, economia e

bioética de cada país. No Brasil, os transgênicos chegaram de forma clandestina e hoje tornaram-se uma realidade e em processo de legalização. Proibir ou aceitar? Seria esse o

dilema a ser resolvido. Cautela é a palavra que deve ser o princípio desse processo, uma vez que não existe tecnologia sem riscos.

Palavras-chave: OGMs, transgênicos, cautela, riscos, benefícios.
PEDOLOGIA APLICADA À CONSTRUÇÃO CIVIL NO ESTADO DO RIO GRANDE DO NORTE
Authors: Pereira Alexandre da Costa , Morais Eliane Oliveira de , Ribeiro Sandra Albino
Published: December 2014

O presente artigo tem como objetivo fundamental a discussão sobre a aplicação de características geomorfológicas e pedológicas de solos do Estado do Rio Grande do Norte

relacionadas com comportamentos geotécnicos de interesse particular ao setor da Construção Civil. A metodologia empregada se baseia nos estudos de fatores pedológicos

condicionantes de propriedades dos solos importantes para o projeto e construção de obras de engenharia civil, sendo realizada a análise dos distintos tipos pedológicos de solos e de mapas da geomorfologia e pedologia do Estado. Conclue-se que as informações baseadas nos estudos de características pedológicas dos solos podem ser úteis para a análise de macro-zonas com riscos potenciais de erosão, permeabilidade, colapsividade e expansividade de solos. Com o estudo feito, foram elaborados alguns mapas que podem

ajudar no planejamento adequado do uso dos solos a fim de se evitar eventuais problemas geotécnicos.

Palavras-chave: Construção Civil, Solos, Geomorfologia e Pedologia.
A flood risk management protocol for roads
Authors: Hankin Barry , Bryant Ross , O’Malley Vincent , Kitchen Amanda , Dobson Rene
Published: December 2014

This paper reports on the development of a flood risk management protocol for the Irish National Roads Authority. There have been several extreme surface water flooding events across Ireland in recent times, causing wide-scale disruption, damage to the road network and loss of life. A fast, graphics-processor-based shallow water equation numerical scheme was used to model extreme surface water flooding for four design rainfall events covering the national road network to help understand key vulnerabilities and sensitivities of the network. Hazard data from these simulations were used to attribute short segments of carriageway and were combined with local traffic data to derive a disruption metric. A large suite of interactive maps was developed, combining the new surface water flood risk information with flood extents, other sources of flooding and historic records. These were incorporated into the protocol to help roads engineers prioritise locations for site visits, for which detailed site assessment sheets were developed. These focus further on the potential flooding mechanisms for culverts, bridges and drainage and are tabulated here, along with common mitigation strategies to assist the practitioner.
The Estimated Cost of Early Cord Clamping at Birth Within Europe
Authors: Hutchon David J. R. , Wepster Bente
Published: December 2014

Early cord clamping has been a common although variable practice at all births throughout Europe for the past 40 years. It is known to result in a variable degree of hypovolemia, reduced cardiac output, reduced cerebral circulation, and an immediate loss of placental oxygenated blood. Hypoxic ischemia of the brain at birth is recognized to be a major underlying cause of cerebral palsy. Using very conservative estimates of the adverse effects of early cord clamping in a proportion of births according to the survey of its use in Europe and an estimate of the cost of care for an individual with cerebral palsy, we have calculated a possible cost for the intervention which is unnecessary and continued practice is largely the result of habit and poor understanding of the physiology of transition.
Introduction of a Mixture of β‐Tricalcium Phosphate Into a Complex of Bone Marrow Mesenchymal Stem Cells and Type I Collagen Can Augment the Volume of Alveolar Bone Without Impairing Cementum Regeneration
Authors: Nagahara Takayosi , Yoshimatsu Shinichiro , Shiba Hideki , Kawaguchi Hiroyuki , Takeda Katsuhiro , Iwata Tomoyuki , Mizuno Noriyoshi , Fujita Tsuyoshi , Kurihara Hidemi
Published: December 2014

Background: The purpose of this study is to evaluate whether β‐tricalcium phosphate (β‐TCP) could be a promising modality to help augment alveolar bone in periodontal tissue regeneration by bone marrow mesenchymal stem cells (BMMSCs).

Methods: Expanded BMMSCs and atelocollagen (Col) were mixed together (MSC/Col). A combination of β‐TCP with MSC/Col was also prepared (MSC/Col/TCP). MSC/Col/TCP or MSC/Col was transplanted into experimental periodontal Class III furcation defects that had been exposed to inflammation in beagle dogs. Periodontal tissue regeneration was evaluated by histologic and morphometric analyses at 4 and 8 weeks after transplantation.

Results: MSC/Col and MSC/Col/TCP enhanced periodontal tissue regeneration compared to Col and TCP/Col according to hematoxylin and eosin staining. The percentage of new cementum length in the MSC/Col/TCP group was not significantly different from that in the MSC/Col group at 4 and 8 weeks. On the other hand, the percentage of new bone area in the MSC/Col/TCP group was much higher than that in the MSC/TCP group at 4 weeks. However, at 8 weeks, no significant difference in new bone area was found between the two groups. In the MSC/Col/TCP group, β‐TCP was surrounded by newly formed bone. Multinucleated cells, which were positive for osteopontin and tartrate‐resistant acid phosphatase, were present in the interconnected macropores of β‐TCP.

Conclusion: These findings suggest that β‐TCP is applicable as a scaffold for BMMSCs transplantation and helps augment alveolar bone without impairing regeneration of cementum.
American Recovery and Reinvestment Act investments in data infrastructure
Authors: O’Day Bonnie , Kieffer Tessa , Forrestal Sarah , Esposito Dominick
Published: December 2014

Aim:
This article describes American Reinvestment and Recovery Act comparative effectiveness research data infrastructure (DI) investments and identifies facilitators and barriers to implementation.
Materials & methods:
We reviewed original project proposals, conducted an investigator survey and interviewed project officers and principal investigators.
Results:
DI projects assembled or enhanced existing clinical datasets, established linkages between public and private data sources and built infrastructure. Facilitators included building on existing relationships across organizations and making collection as seamless as possible for clinicians.
Conclusion:
To sustain DI, investigators should reduce the burden of comparative effectiveness research data collection on practices, adequately address data privacy and security issues, resolve or lessen the impact of data-linking issues and build research capacity for other investigators and clinicians.
Infrastructure to support learning health systems: are we there yet? Innovative solutions and lessons learned from American Recovery and Reinvestment Act CER investments
Authors: Holve Erin , Segal Courtney
Published: December 2014

The 11 big health data networks participating in the AcademyHealth Electronic Data Methods Forum represent cutting-edge efforts to harness the power of big health data for research and quality improvement. This paper is a comparative case study based on site visits conducted with a subset of these large infrastructure grants funded through the Recovery Act, in which four key issues emerge that can inform the evolution of learning health systems, including the importance of acknowledging the challenges of scaling specialized expertise needed to manage and run CER networks; the delicate balance between privacy protections and the utility of distributed networks; emerging community engagement strategies; and the complexities of developing a robust business model for multi-use networks.
Comparison of direct and indirect costs of abnormal uterine bleeding treatment with global endometrial ablation and hysterectomy
Authors: Bonafede Machaon M , Miller Jeffrey D , Lukes Andrea , Meyer Nicole M , Lenhart Gregory M
Published: December 2014

Aim:
The objective was to compare abnormal uterine bleeding (AUB) direct healthcare costs and indirect work absence or short-term disability costs associated with treatment with second-generation global endometrial ablation (GEA) or hysterectomy.
Methods:
Women aged 30–55 years with AUB who underwent GEA or hysterectomy during 2006–2010 were identified in the Truven Health MarketScan

®

Commercial and Health and Productivity Management databases.
Results & conclusion:
Two-thirds (66.3%) of the 61,602 study patients underwent GEA compared with hysterectomy (33.7%). Hysterectomy patients had higher treatment costs (US$12,147 vs 5837; p < 0.001), higher annual absenteeism costs (US$7543 vs 5621; p < 0.001), were four-times more likely to have a short-term disability claim (84 vs 21%; p < 0.001) and had higher per-patient short-term disability costs (US$5744 vs 1361; p < 0.001). Overall hysterectomy costs were approximately twice those of GEA.