bluuebunny/crossref_metadata_2025 huggingface dataset:
Mesure du paramètre d'ordre à grande distance dans le laiton β par la diffraction de neutrons
Authors: Roussel J.
Published: October 2018

La structure ordonnée du laiton β a été étudiée par diffraction de neutrons. Le paramètre d'ordre a été déterminé entre la température ambiante et 450° C sur des échantillons non trempés. Les résultats sont en bon accord avec les mesures précédentes de Chipman et Warren faites aux rayons X sur échantillons trempés. Accessoirement, les valeurs des sections efficaces de Zn et Cu ont pu être précisées.
ORIENTATION MEASUREMENT WITH GYROTHEODOLITE
Authors: Bezdíček Vladimír , Dandoš Rostislav , Konečný Miroslav , Kotrbanec Juraj , Král Tomáš , Wlochová Andrea
Published: October 2018

The article deals with the principle of using gyrotheodolite in connection and orientation measurements. It describes orientation measurements with gyrotheodolite, provides basic information about the device and explains how it works. The first part describes gyrotheodolite and methods of determining astronomical true north. The workflow for measurement and subsequent data processing is described below. In the second part, two orientation measurements are described and processed. Finally, the accuracy achieved and the possibility to use the device for activities other than mine measurement are assessed.
CHARACTERISTICS OF MODELS THAT IMPACT TRANSFORMATION OF BIMS TO VIRTUAL ENVIRONMENTS TO SUPPORT FACILITY MANAGEMENT OPERATIONS
Authors: Zou Zhengbo , Arruda Luiz , Ergan Semiha
Published: October 2018

Building information models (BIMs) have been used by the Architectural/Engineering/Construction (AEC) industry with a focus on storing and exchanging digital information about building components. However, the untapped potential of BIMs in facility operations and the experience of facility operators while they interact with digital building information have not been understood widely. One of the underlying bottlenecks in the use of BIMs in the FM phase is the lack of interactions with components to easily access information of interest, and the lack of ways to navigate in models with full spatial understanding. Virtual environments (VEs), which represent physical spaces digitally in virtual worlds, enable interactions with virtual components to access information with spatial understanding. The underlying challenges in the conversion of BIMs to VE hinder a streamlined process. This paper provides a detailed analysis of building size, geometric complexities of discipline models and level of geometric granularity as factors contributing to inefficient transformation of BIMs to VE. The paper also provides research findings on a set of computational approaches such as polygon reduction and occlusion culling to overcome challenges and improve the data transfer faced in converting BIMs into VEs over a range and size of facility models.
Flow-accelerated corrosion rate and residual life time estimation for the components of pipeline systems at nuclear power plants based on control data
Authors: Baranenko Valery I. , Gulina Olga M. , Salnikov Nikolaj L.
Published: October 2018

As of today, large volumes of data related to non-destructive operational control are accumulated on NPPs. For ensuring safe operation of power units, optimization of scope and scheduling operational control it is necessary to continue development of guidance documents, software products, methodological guidance and operational documentation (Baranenko et al. 1998, Gulina et al. 2013, Recommendation (NSAC-202L-R4) 2013).

Approaches are examined to assessment of the rate of erosion-corrosion wear (flow-accelerated corrosion - FAC) according to the data of operational control. The present study was performed based on the data of thickness gauging of different elements of pipelines of NPPs with different types of reactor. Further development of ideas exposed in (Baranenko et al. 2016) allowed revealing specific features of ECW processes on straight sections, bends and in the zones adjacent to weld joints of pipelines of NPPs equipped with VVER and RBMK reactors. Presence of the process of deposition of corrosion products on internal surfaces of pipeline walls results in the fact that residual lifetime of elements nominally increases due to deposition. However, real wall thickness under the layer of deposits is unknown just as the initial wall thickness is unknown as well. Investigation implemented in the present study is aimed at the substantiation of the methodology of calculation of FAC rate according to the data of operational control for the purpose of drawing calculation results closer to the reality keeping conservatism. Uniform approach to the assessment of FAC rate in the examined elements of pipelines was developed. Methodologies for evaluation of correction coefficients taking into account dimensional technological tolerances, special features of geometry of the element, as well as effect of deposits on the results of thickness measurements were suggested based on the data of operational control and industry standards.

The implemented studies demonstrated efficiency of the developed procedures for pipeline welding zones. Analysis of known and newly developed procedures was performed for bends and ranking of these procedures according to the criterion of “conservatism of evaluation of residual lifetime” was executed.

Introduction of correction coefficients allows enhancing conservatism of calculations of lifetime characteristics as compared with calculations performed on the basis of nominal values of thicknesses; the result depends on the type and dimensions of the element, its geometry, as well as on the type of reactor.
Converting ENDF libraries into relational format
Authors: Yuferov Anatoliy
Published: October 2018

The article considers the issues of converting the ENDF format systems of constants to relational databases. This conversion can become one of the tools facilitating the development and operation of factual information, techniques and algorithms in the field of nuclear data and, therefore, increasing the efficiency of the corresponding computational codes. The work briefly examines an infological model of ENDF libraries. The possible structure of tables of the corresponding relational database is described. The proposed database schema and the form of tables take into account the presence of both single and multiple properties of the isotopes under consideration. Consideration is given to the difference in organizational requirements for transferring constants from relational tables to programs and performing a visual analysis of data in tables by a physicist-evaluator. The conversion algorithms and results are described for the ROSFOND-A and ENDF/B-VII.1 libraries. It is shown that performing calculations directly in the DBMS environment has its advantages in terms of simplifying programming and eliminating the need to solve a number of problems on data verification and validation. Possible approaches are indicated to ensure operation of inherited software together with nuclear data libraries in the relational format. Some terminological refinements are proposed to facilitate constructing an infological model for ENDF format. The conversion programs and the ENDF/B-VII.1 library in the relational format are available on a public site.
La disparité socio-économique comme facteur de désintégration ?
Authors: Safi Walid Salim
Published: October 2018

Nombreux sont les politologues qui s’accordent sur le fait que la disparité socio-économique dans les pays caractérisés par une division segmentaire représente un danger réel pour l’union nationale ainsi que pour leur avenir. Certains politologues sont allés plus loin en considérant que l’équilibre socio-économique entre les communautés représente une condition fondamentale pour le maintien du système de concordance 1 . Qu’en est-il pour le Liban ?
Les réfugiés palestiniens
Authors: El-Natour Souheil
Published: October 2018

Le président George W. Bush a donné le 24 juin 2002 son point de vue concernant une solution adéquate à la crise du Moyen Orient, cependant il a omis de signaler le problème des réfugiés, ainsi que leur droit au retour, conformement à la résolution 194 des Nations Unies. Cette position n’est pas facilement admissible et elle est de nature à effrayer les pays qui accueillent les réfugiés et qui craignent leur implation définitive. En effet ces Etats refusent de faire supporter la charge des réfugiés à leur population. C’est notamment la position de l’Etat libanais qui souffre toujours des effets néfastes de la guerre civile et des guerres dues à l’occupation israélienne du Sud Libanais.
Où va Jérusalem ? L’expérience de la Maison de l’Orient
Authors: Maalouf Monneau May
Published: October 2018

L’avenir de la Maison de l’Orient, fermée par les autorités israéliennes depuis août 2001, est aujourd’hui en proie à l’incertitude. Si la « feuille de route » proposée par le Quatuor (Etats-Unis, Europe, Russie, Nations Unies) en mai 2003 évoque l’ouverture des institutions palestiniennes situées à Jérusalem-Est, elle ne cite pas la Maison de l’Orient d’une manière explicite. Et pourtant, l’esprit de résistance que cette dernière a instauré est toujours vivant dans la conscience palestinienne d’aujourd’hui. Cette institution a réussi en effet à être la force motrice de la résistance palestinienne à Jérusalem pendant presque dix ans.
« Parendicapés ! »
Authors: Ruby Frédéric
Published: October 2018

Les parents d’enfants handicapés sont projetés, malgré eux, dans une aventure houleuse et bancale. Le modèle classique du statut de parents est ainsi remis en jeu. Ce texte parle de ces difficultés et de l’enjeu de retrouver un équilibre, de se réinventer parents. Cela nécessite d’être créatif, ouvert à une nouvelle façon de vivre.
L’autorité parentale : droits, devoirs et limites légales de la parentalité
Authors: Charles Géraldine
Published: October 2018

Le juge aux affaires familiales est le juge naturel des questions d’autorité parentale en ce qu’il veille « spécialement à la sauvegarde des intérêts des enfants mineurs 1  ». L’autorité parentale est définie à l’article 371-1 du Code civil comme un « ensemble de droits et de devoirs ayant pour finalité l’intérêt de l’enfant. Elle appartient aux parents jusqu’à la majorité ou l’émancipation de l’enfant pour le protéger dans sa sécurité, sa santé, sa moralité, pour assurer son éducation et permettre son développement, dans le respect dû à sa personne ». L’autorité parentale se décline en plusieurs attributs et mériterait sans doute d’être enrichie et précisée dans ses contours juridiques afin de répondre aux nouvelles aspirations familiales aussi diverses soient-elles au sein d’une société dont les valeurs symboliques et fondamentales sont en profonde mutation.
Parentalité et assistance médicale à la procréation
Authors: Beauquier-Maccotta Bérengère
Published: October 2018

Près de 25 000 enfants naissent chaque année après une conception par assistance médicale à la procréation. Nous déclinerons ici les questions que ce parcours singulier induit sur le processus de parentalité. L’infertilité, le vécu des traitements et la filiation particulière qui se construit dans les dons de gamètes demandent un travail psychique bien spécifique aux parents en devenir. L’écoute des professionnels leur est souvent nécessaire pour continuer leur élaboration intime.
Clinique de l’enfant maltraité
Authors: Bonneville-Baruchel Emmanuelle
Published: October 2018

Cet article présente les troubles de l’attachement et de la relation intersubjective que présentent de nombreux enfants qui ont vécu de façon fréquente et répétée des situations de négligence grave ou de maltraitance. Dans ce contexte, ces enfants ont expérimenté des interactions qui se sont inscrites en eux comme des expériences traumatiques. La recherche présentée vise à analyser comment ces expériences précoces, et le système de défense déployé pour la survie psychique pendant une durée excessive, ont généré des troubles graves du développement et du fonctionnement psychique, neurologique et relationnel. Elle s’attache particulièrement aux défaillances et aux troubles des liens intrapsychiques et intersubjectifs. L’article aborde enfin des pistes de réflexion pour l’aménagement de l’accueil de ces enfants dans leur environnement quotidien.
À propos de la parentalité en situation de handicap
Authors: Wendland Jaqueline
Published: October 2018

Un nombre considérable d’adultes souffrent d’une forme de handicap, qu’il soit moteur, cognitif, sensoriel ou psychique, lié ou non à une maladie génétique, à une anomalie congénitale ou acquise, ou à un accident. De nos jours, de plus en plus d’adultes handicapés expriment un désir d’enfant et deviennent parents. Dans cet article, nous abordons l’évolution des représentations sociales autour du handicap et en particulier de la parentalité des adultes handicapés, les particularités de leur expérience de la parentalité, les possibles impacts du handicap parental sur l’enfant, ainsi que les spécificités de l’accompagnement du projet parental par les professionnels.
Nouveau-nés à risque ? Parents exposés…
Authors: Desvignes Christine , Lasica Pierre-Alexandre , Aellion Delphine , Quirot Benoît
Published: October 2018

Définie par des critères uniquement somatiques, la catégorie des nouveau-nés dits « à risque » ou « vulnérables », à tout le moins dans le cadre des protocoles de dépistage destinés (à juste titre) à cette population cible, nous paraît encore trop souvent faire l’impasse sur le fait suivant : ces nouveau-nés sont également à risque d’avoir des parents « exposés », grandement fragilisés, sinon parfois cliniquement traumatisés par le contexte ayant accompagné la grossesse et/ou la naissance de leur bébé. À partir de situations cliniques illustrant, dans la souffrance de premiers liens, l’intrication du « naître humain » et du « devenir parent » (Missonnier, 2009), le présent article montre l’intérêt des interventions précoces d’une unité de pédopsychiatrie périnatale et plaide en faveur d’échanges et de dispositifs créatifs entre nos équipes.
Devenir parent dans la rencontre avec l’équipe du camsp d’Orange
Authors: Grange Catherine , Roux Dominique , Konicheckis Alberto
Published: October 2018

À partir des diverses modalités d’interventions possibles, l’équipe du camsp d’Orange soutient et favorise le processus de la parentalité. On le définit ici comme la capacité des adultes à établir des liens d’identification avec les besoins de l’enfant. La situation particulière de Louise, et de ses jeunes parents en difficulté à entrer en contact avec elle, sert de fil rouge pour l’illustrer. Des séquences extraites d’un groupe d’accueil parents-enfants, où l’ensemble des parents sont partie prenante du processus, ainsi que des visites à domicile, montrent comment l’intervention des professionnels du camsp permet de surmonter les bouleversements paralysants provoqués par la naissance d’un enfant porteur d’un handicap.
Les métamorphoses de la parentalité : un débat incontournable
Authors: Missonnier Sylvain
Published: October 2018

L’exploration par les sciences humaines des métamorphoses contemporaines de la parentalité est aujourd’hui un chantier indispensable pour dépasser la violente passion des polémiques binaires et du choc frontal des idéologies « prêtes à porter » qui occupent le devant de la scène médiatique. Les nouvelles formes de parentalité viennent inquiéter l’hétérosexualité comme seule norme sexuelle légitimant le lien de filiation. Dans ce contexte, les fonctions paternelle et maternelle peuvent être assumées par des personnes sans lien « du sang » et elles ne sont pas nécessairement attachées à un individu de sexe masculin pour la fonction paternelle et de sexe féminin pour la fonction maternelle. Plutôt que de s’ériger en expert pour ou contre, les cliniciens peuvent apporter dans ce débat des éléments de compréhension de la réalité psychique en jeu en s’engageant dans des recherches indissociables d’une transdisciplinarité anthropologique, philosophique, historique, sociologique, juridique, médicale, politique et éthique.
Démarche de conciliation et compromis sémantique en traduction des proverbes
Authors: Yao Yao Jean-Marc
Published: October 2018

Quand on veut traduire les proverbes, une alternative est offerte : soit le traducteur décide de traduire littéralement, en gardant les aspérités de la langue source au risque d’avoir une traduction stylistiquement affaiblie ; soit il recherche l’équivalent proverbial préexistant, ou il traduit sémantiquement en effaçant ou en dénaturant les référents culturels de l’original. Ces dernières sont essentiellement axées sur la langue cible. Ici, nous proposons une méthode inclusive, basée sur ce que nous nommons une démarche de conciliation en traduction des proverbes, se déroulant en trois étapes (traduction littérale ; recherche des moules préexistants en langue source ; et saturation des moules identifiés par la traduction littérale) et débouchant sur un compromis sémantique.
Getting physical about negotiation, facilitation, and mediation: Bodywork for enhanced performance, protection, and perception
Authors: Martin Philippe
Published: October 2018

Cet article présente dix pratiques corporelles pour améliorer sa performance, sa protection et sa perception en négociation, facilitation et médiation. Elles se fondent sur trente ans d’expérience. Les collègues à qui je les enseigne au sein des institutions européennes les trouvent utiles. Elles consistent à respirer consciemment, se connecter avec les autres et avec soi-même, canaliser les agressions, projeter de la confiance en soi et de la puissance, lire les indices faciaux et corporels, et se préparer comme un athlète le ferait. La présentation de chaque pratique comprend une histoire illustrative, des indications concernant leur utilisation et des commentaires.
L’effet d’une politique d’État sur les migrations DOM-métropole. Les enseignements des recensements de 1962 à 1999
Authors: Haddad Marine
Published: October 2018

Cet article propose de nouvelles perspectives d’analyse de la démographie de quatre départements français d’outre-mer (DOM : Guadeloupe, Guyane, Martinique et La Réunion). Quels sont les effets des politiques publiques de population, portées notamment par le Bureau pour la migration des DOM (Bumidom, 1963–1981) et ses successeurs, sur les migrations vers la métropole ? Les recensements de 1968 à 1999 permettent de mesurer l’ampleur et la structure de ces flux migratoires au cours du temps, ainsi que leur poids dans la population des natifs des DOM. S’appuyant sur des régressions en différences de différences, cette analyse permet de mesurer l’effet des politiques menées par le Bumidom. Elle montre que cet organisme a favorisé la croissance des migrations, également alimentées par les inégalités socioéconomiques entre les DOM et la métropole. Alors que l’offre d’enseignement supérieur dans les DOM et la part de bacheliers ne progressent pas au même rythme, les aspirations scolaires peuvent également être motrices des migrations. La comparaison des ultramarins restés dans les DOM avec ceux partis en métropole révèle que, depuis 1968, ces derniers sont caractérisés par un niveau d’études plus élevé.
Aider un parent âgé dépendant. Configurations d’aide et interactions dans les fratries en France
Authors: Roquebert Quitterie , Fontaine Roméo , Gramain Agnès
Published: October 2018

À partir de l’enquête Handicap-Santé, volet Ménages (Insee-Drees, 2008), nous étudions les configurations d’aide familiale autour d’un parent âgé et dépendant en France. Une première étape descriptive montre que l’aide apportée par les enfants est affectée par le statut conjugal du parent, la taille de la fratrie et le rang dans la fratrie. L’analyse se concentre ensuite sur les familles de 2 enfants et montre que les écarts de mobilisation observés selon le rang découlent de trois sources : les différences de caractéristiques individuelles entre aînés et cadets, l’impact différent de ces caractéristiques sur la décision d’aide, et enfin une différence dans l’ajustement des uns au comportement des autres (interactions endogènes). L’impact des caractéristiques familiales apparaît en effet relativement similaire pour les aînés et les cadets – en particulier la forte assignation au rôle d’aidant des femmes avec un frère –, mais le comportement des cadets fait apparaître en outre un arbitrage entre coûts et utilité de l’aide. Avec une définition de l’aide ciblée sur les tâches de la vie quotidienne, une seule explication majeure des différences demeure : l’asymétrie dans l’ajustement au comportement de l’autre enfant, à caractéristiques individuelles et familiales données.
Quels logements et quels quartiers ? L’intégration résidentielle des immigrés en France
Authors: McAvay Haley
Published: October 2018

À partir de l’enquête française Trajectoires et origines (TeO), cet article analyse les conditions de logement des immigrés et de leurs descendants pour cinq grands groupes d’origines. Ancré dans les théories classiques de l’assimilation spatiale des immigrés, ce travail explore les facteurs contribuant aux disparités des modes d’occupation des logements et des zones de résidence entre les immigrés et la population majoritaire. Des modèles d’équations simultanées sont utilisés pour décrire les interrelations entre le type de logement et la zone de résidence selon l’origine. Bien que des signes d’accès à la propriété en fonction de la durée du séjour en France et de la génération soient visibles, l’occupation d’un logement social reste fortement liée à l’origine des immigrés, indépendamment des autres facteurs. Les personnes originaires d’Afrique du Nord ou subsaharienne et de Turquie des première et deuxième générations ont des chances nettement plus importantes de vivre dans le parc locatif social que les autres groupes. Ils ont également une probabilité nette plus élevée d’habiter ces logements sociaux dans des quartiers à forte proportion d’immigrés, ce qui indique une ségrégation spatiale selon l’origine des résidents de logements sociaux.
Effect of Viscous Dissipation on Three Dimensional Flow of a Nanofluid by Considering a Gyrotactic Microorganism in the Presence of Convective Condition
Authors: Gireesha Bijjanal Jayanna , Kumar K. Ganesh , Rudraswamy N.G. , Manjunatha S.
Published: October 2018

This article deals with the combined effects of viscous dissipation and convective condition on 3D flow, heat and mass transfer of a nanofluid over a stretching sheet by considering gyrotactic microorganism. Appropriate transformations yield the nonlinear ordinary differential systems. The resulting nonlinear system has been solved. Role of substantial parameters on flow fields as well as on heat, mass and microorganism transportation rates are determined and conferred in depth through graphs. It is found that, the larger values of bio-convection Schmidt number decreases the microorganisms profile.
Effect of Viscous Dissipation on Upper - Convected Maxwell Fluid with Cattaneo-Christov Heat Flux Model Using Spectral Relaxation Method
Authors: Gangadhar K. , Suresh Kumar Chintalapudi , Ibrahim S. Mohammed , Lorenzini Giulio
Published: October 2018

The study observes the flow and heat transfer in upper-convected Maxwell fluid over a rapidly stretching surface with viscous dissipation. Cattaneo-Christov heat flux model has been used in the preparation of the energy equation. The model is used in guessing the impacts of thermal relaxation time over boundary layer. Similarity method has been used to keep normal the supervising boundary layer equations. Local similarity solutions have been obtained through spectral relaxation method. The fluid temperature has a relation with thermal relaxation time inversely and our calculations have shown the same.. In addition the fluid velocity is a receding activity of the fluid relaxation time. A comparative study of Fourier’s law and the Cattaneo-Christov’s law has been done and inserted in this.
Numerical Investigation of Chemical Reaction and Heat Source on Radiating MHD Stagnation Point Flow of Carreau Nanofluid with Suction/Injection
Authors: Reddy Konda Jayarami , Madhusudhana Reddy N.P. , Konijeti Rama Krishna , Abhishek Dasore
Published: October 2018

This research work is focused on the effects of combined heat and mass transfer on MHD stagnation point flow of Carreau nanaofluid embedded in porous medium with heat source. Thermal radiation and chemical reaction are also taken into account. The governing non-linear PDEs are transformed into a set of non-linear coupled ODEs which are then solved numerically by using the Runge– Kutta–Fehlberg fourth–fifth order method along shooting technique. The graphical and tabular results elucidate the influence of different non-dimensional governing parameters on the velocity, temperature and concentration fields along with the wall friction, local Nusselt and Sherwood numbers. We found the dual nature of the solutions for suction and injection cases. A good agreement of the present results has been observed by comparing with the existing literature results.
Effects of Variable Fluid Properties on MHD Non-Darcy Convective Flow from Vertical Plate with Heat Generation and Chemical Reaction
Authors: Babu R. Suresh , Kumar B. Rushi , Mallikarjuna B. , Dinesh P.A.
Published: October 2018

A numerical computation has been carried out to study, MHD flow of an electrically conducting viscous fluid from a semi-infinite vertical plate in a porous medium in the presence of heat source and homogeneous first order chemical reaction. The fluid and porous properties, thermal and solutal diffusivity, permeability and porosity are considered to be varied. The governing non-linear partial differential equations for the fluid flow are derived and transformed into a system of ordinary differential equations using a suitable similarity transformations. A numerical computation of shooting technique is employed along Runge Kutta method of fourth order with the help of Newton-Raphson algorithm to compute the solution and analyze the behavior of velocity, temperature, concentration, skin friction, heat and mass transfer rates graphically for various non-dimensional parameters which are controlling the flow of the physical system. The results of the numerical scheme are validated and a numerical comparison has been made with the available literature in the absence of some parameters and it is found to be in good agreement.
Thermal Radiation and Heat Source Effects on MHD Non-Newtonian Fluid Flow over a Slandering Stretching Sheet with Cross-Diffusion
Authors: Kumar Prathi Vijaya , Ibrahim S. Mohammed , Lorenzini Giulio
Published: October 2018

Magnetohydrodynamic non-Newtonian fluid flow over a stretching sheet with intermittent thickness under multifarious slips is appraised. Williamson fluid pattern is incorporated in this discussion. The energy and concentration equations are confederated with the repercussion of Soret and Dufour. We endorsed homotopy analysis method (HAM) to collocate the solutions of ODE. The graphical and tabular results for velocity, temperature, concentration, friction factor, heat and mass transfer rates when (Newtonian fluid) and (non-Newtonian fluid-Williamson fluid) are secured and discussed in detail.
Effects of Mixed Convection on the Oscillatory Flow of a Couple Stress Fluid through a Vertical Plate with Variable Fluid Properties
Authors: Babu R. Suresh , Kumar B. Rushi , Dinesh P.A.
Published: October 2018

A numerical computation has been carriedout for the steady, mixed convective, incompressible, viscous, electrically conducting couple stress fluid through a vertical plate with variable fluid properties in a porous medium. A uniform magnetic field is applied in the transverse direction and parallel to the vertical plate of the physical model and governing equations are derived for it."Using a suitable similarity transformation, governed PDE's are transformed into a set of ODE's which are highly non-linear coupled equations. An advanced Shooting technique is adopted to compute the variations of velocity, temperature, concentration in terms of non-dimensional parameters. Also physical interpretation of non-dimensional parameters like couple stress parameter magnetic field Prandtl number Schmidt number thermal conductivity and solutal diffusivity parameters are examined through plots for both variable permeability and uniform permeability."From the numerical results, an excellent agreement has been observed for the present results, as well as comparison is made between the present and the earlier works for a particular case of the problem.
Turbulent Heat Transfer and Fluid Flow over Complex Geometry Fins
Authors: Menni Younes , Azzi Ahmed , Chamkha Ali Jawad
Published: October 2018

In this work, we presented a numerical contribution to numerically evaluate the thermal transfer improvement from forcing a 2D flow of air through a baffled channel. Two complex geometry fins were inserted in the flow field to force recirculation zones to augment mixing and thus, the thermal transfer. The dynamic thermo-energy behavior of air is shown for Re numbers ranging from 12 × 103 to 32 × 103. The governing equations, employed to simulate the turbulent forced-convection airflow in the domain under investigation, were solved using the finite volume method, by means of CFD FLUENT, based on the SIMPLEC algorithm. For using the complex geometry fins, the augmentations in Nusselt number and friction factor are in the range of 194.108 - 387.322 % and 476.779 - 2603.667 % over the smooth channel with no fin, respectively. In addition, the use of complex geometry fins with Re = 32 × 103 gives higher TEF than that with Re = 17,000, 22,000, and 27,000 around 12.072 %, 8.568 %, 5.189 %, and 2.389 %, respectively.
Unsteady Hydromagnetic Boundary Layer Flow of a Nanofluid over a Stretching Sheet: Using Cattaneo-Christov Heat Flux Model
Authors: Vinod Kumar G. , Varma S. Vijaya Kumar , Kiran Kumar R.V.M.S.S.
Published: October 2018

The present investigation has put a focus on the hydromagnetic boundary layer unsteady flow of a nanofluid over a stretching sheet. A new heat flux model named Cattaneo-Christov is applied as the substitution of classical Fourier’s law. Buongiorno’s model is incorporated. The coupled non-linear transformed equations are solved numerically by using shooting technique with MATLAB bvp4c package. The obtained results are presented and discussed through graphs and tables in detail. Our results reveal that the unsteady parameter reduces all the three boundary layer thickness. The thermal relaxation parameter exhibits a non-conducting nature that makes the decline in fluid temperature.
Die Dordtse kerkorder van 1619
Authors: Müller J.J.P.
Published: October 2018

No abstract available.
Die wet en geloofsbelydenis
Authors: Booysen D.J.
Published: October 2018

No abstract available.
Die invloed van die Godsdiens op die vorming van die Afrikaanse karakter
Authors: Wolmarans J.N.
Published: October 2018

No abstract available.
Boekbespreking
Authors: Pont A.D. , Viljoen C.J. , De Wet J.I. , Van Wyk W.C.
Published: October 2018

No abstract available.
Hepatocyte growth factor: A novel tumor marker for breast cancer
Authors: Pai Prathiksha , Kittur Shreekant K.
Published: October 2018

Context:

The present study concentrates on the need for a novel tumor marker in breast carcinoma, which could be the hepatocyte growth factor (HGF). It is a fibroblast-derived growth factor which acts on cells of mainly epithelial origin, known for its mitogenic, motogenic, and morphogenic activities.

Aims:

The aim of this study is to correlate serum HGF levels with clinicopathological parameters of breast cancer.

Subjects and Methods:

Forty-four consecutive patients with breast cancer diagnosed on fine-needle aspiration cytology were prospectively included and evaluated. Venous blood samples were collected before the surgery. Sera were obtained by centrifugation and stored at –20°C until assayed. The control group consisted of 38 healthy, age-matched participants. Serum concentrations of HGF were measured by the quantitative sandwich enzyme immunoassay technique and correlated with clinicopathological parameters of breast cancer. The Student’s t-test was used to assess the significance of HGF in breast cancer, using SPSS statistics version 22.

Results:

The mean value of circulating HGF level in breast cancer patients was 527.05 ± 214.72 pg/mL and that of control group was 297.61 ± 149.2 pg/mL, and the difference was significant (P < 0.01). With univariate analysis, patients in postmenopause (P = 0.01), with poorly differentiated tumors (P < 0.001) and distant metastasis (P < 0.01), were shown to have significantly higher serum concentrations of HGF. Furthermore, it correlated significantly with mitotic figures (P < 0.01) and nuclear pleomorphism (P = 0.008).

Conclusions:

Preoperative serum HGF is a promising tumor marker of breast cancer that could predict the prognosis of breast cancer.
Comparison of thermoluminescent dosimeter calibration irradiated in gamma knife and 60Co instruments
Authors: Moafi Mohadese , Geraily Ghazale , Shirazi Ali Reza
Published: October 2018

Aim:

By necessity of dosimeters calibration for evaluating delivered dose accuracy to organs out of the radiation field in patients undergoing gamma knife radiosurgery, we calibrated thermoluminescence dosimeters in gamma knife and 60Co instruments, and then, compared both results to investigate when one of these devices was out of reach, can we use one of this instruments instead of the ther.

Materials and Methods:

To individual calibration by 60Co, thermoluminescent dosimeters (TLDs) were placed in a Perspex sheet with conditions of source-skin distance = 80 cm, field size = 10 cm × 10 cm, and dose = 100 cGy. For individual calibration by Gamma knife, TLDs placed in flat Perspex were located in a special sphere and were exposed with conditions of source to axis distance = 40 cm, field size = 18 mm, and dose = 100 cGy, and for group calibration, TLDs were divided into six groups and were exposed with doses of 0–1000 cGy in both devices.

Results:

According to Fisher's exact test, calculated P = 0.27, so the difference is not significant.

Conclusions:

The result showed despite differences in calibration conditions, 60Co unit can be used to calibrate TLD dosimeter for estimating the accuracy of measurement of delivered dose to organs of patients undergoing Gamma Knife 4C radiosurgery treatment.
A Monte Carlo evaluation of dose distribution of commercial treatment planning systems in heterogeneous media
Authors: Hasani Mohsen , Mohammadi Kheirollah , Ghorbani Mahdi , Gholami Soraya , Knaup Courtney
Published: October 2018

Introduction:

Calculations from a treatment planning system (TPS) in heterogeneous regions may present significant inaccuracies due to loss of electronic equilibrium. The purpose of this study is to evaluate and quantify the differences of dose distributions computed by some of the newest dose calculation algorithms, including collapsed cone convolution (CCC), fast Fourier transform (FFT) convolution, and superposition convolution, in heterogeneity of the lung.

Materials and Methods:

A 6-MV Siemens Primus linear accelerator was simulated by MCNPX Monte Carlo (MC) code, and the results of percentage depth dose (PDD) and dose profile values were compared with measured data. The ISOgray TPS was used and PDDs of CCC, FFT, and superposition convolution algorithms were compared with the results obtained by MCNPX code. CT2MCNP software was used to convert the computed tomography images of the lung tissue to MC input files, and dose distributions from the three algorithms were compared to MC method.

Results:

For PDD curves in buildup region, the maximum underdosage of ISOgray TPS was at the surface (19%) and comes in closer agreement when depth increases (average 7.08%). Dose differences (DD) between different algorithms and MC were typically 4.81% (range: 1.95% to 7.30%), −1.55% (range: −5.14% to 5.26%) and 4.96% (range: 2.00% to 7.4%) in the lung for the CCC, FFT, and superposition algorithms, respectively. The difference between monitor units and maximum dose calculated using the three algorithms were 0.5% and 1.61%, respectively. The maximum DD of 7% was observed between MC and TPS results.

Conclusion:

Significant differences were found when the calculation algorithms were compared with MC method in lung tissue, and this difference is not negligible. It is recommended to use of MC-based TPS for the treatment fields including lung tissue.
Comparison of biological-based and dose volume-based intensity-modulated radiotherapy plans generated using the same treatment planning system
Authors: Senthilkumar K , Maria Das K. J.
Published: October 2018

Purpose:

Nowadays, most of the radiotherapy (RT) treatment planning systems (TPSs) uses dose or dose-volume (DV)-based cost functions for Intensity modulated radiation therapy (IMRT) fluence optimization. Recently, some of the TPSs incorporated biological-based cost function for IMRT optimization. Most of the previous studies compared IMRT plans optimized using biological-based and DV-based cost functions in two different TPSs. Hence, the purpose of the study is to compare equivalent uniform dose (EUD)-based and DV-based IMRT plans generated using the same TPS.

Materials and Methods:

Twenty patients with prostate cancer were retrospectively selected for this study. For each patient, two IMRT plans were generated using EUD-based cost function (EUD_TP) and DV-based cost (DV_Treatment Plan (TP)), respectively. The generated IMRT plans were evaluated using both physical and biological dose evaluation indices.

Results:

Biological-based plans ended up with a highly inhomogeneous target dose when compared to DV-based plans. For serial organs, Dnear-max or D2%(Gy) of EUD-based plans showed significant difference with DV-based plans (P = 0.003). For both rectum and bladder, there was a significant difference in mean dose and D30%(Gy) dose between EUD-based plans and DV-based plans.

Conclusion:

In this study, we decoupled the influence of optimization parameters from the potential use of EUD-based cost functions on plan quality by generating both plans in the same TPS.
Chance Fracture in an Unbelted Rear Seat Passenger
Authors: Okunlola Abiodun Idowu , Adeolu Augustine Abiodun
Published: October 2018

Chance fracture occurs from flexion-distraction injury in motor vehicle road crash usually when the patient is on a seat belt. It is often associated with intra-abdominal injuries. We managed a 22-year old female unbelted rear seat passenger of a bus which was involved in a lone accident. We highlighted the possible mechanism of chance fracture in an unbelted passenger and satisfactory spinal stability on conservative care with neither internal nor external fixation.
Patterns of Illness Behaviors and its Correlates in Patients with Chronic Nonorganic Pain
Authors: Desai Geetha , Kandavel Thennarasu , Chaturvedi Santosh K.
Published: October 2018

Background: Illness behaviors if abnormal can have significant influence in presentations of chronic pain. The aim of the study was to derive the patterns of illness behaviors and its correlates in subjects with chronic nonorganic pain. Methods: Illness Behavior Questionnaire (IBQ) was administered to 301 adult individuals with chronic nonorganic pain. Factor analysis was performed on the IBQ, and relationships of the dimensions of illness behavior with clinical and demographic variables were computed. Results: Majority of the sample consisted of women (n = 208; 69%) with 43% from rural background and 58% from below poverty line status. Principal axis factoring resulted in four factors, namely health concerns, affective inhibition (AI), bodily distress, and affective distress with psychosocial problems. The three factors excluding AI had significant intercorrelation among them. There was significant difference in mean scores of factors, bodily distress and affective distress in patients from urban and rural background. Conclusions: Illness behaviors in chronic nonorganic pain can be understood as three interrelated factors-health concerns, affective distress with psychosocial problems, and bodily distress. AI might be an independent factor for presentation of chronic nonorganic pain.
Collaborative Tele-Neuropsychiatry Consultation Services for Patients in Central Prisons
Authors: Agarwal Preethi Pansari , Manjunatha Narayana , Gowda Guru S. , Girish Kumar M. N. , Shanthaveeranna Neelaveni , Kumar Channaveerachari Naveen , Math Suresh Bada
Published: October 2018

Background: Tele-medicine helps to provide clinical care comparable to in-person treatment in various clinical settings. It is a novel system of healthcare delivery in both low-resource settings and sites where adequate medical care continues to pose greatest challenge like in prison’s in India and worldwide. Aim: To study the sociodemographic and clinical profile of patients from Central Prisons, having received collaborative Tele-Neuropsychiatric Care. Methodology: Psychiatry, neurology, and neurosurgery specialists provided tele-neuropsychiatry consultation through Specialist–Doctor–Patient model as part of the state-run program for the two central prisons from July 1, 2014, to June 30, 2016. A retrospective file review was done of the tele-neuropsychiatry case records at Tele-Medicine Centre, Located at Tertiary Neuro Psychiatric centre of South India. Results: A total of 53 patients were provided tele-neuropsychiatric consultation over 2-year period. Of these, 48 (90.6%) were male and 34 (64.1%) were aged more than 30 years. In total, 20.7% of them had severe mental illness, i.e., schizophrenia and mood disorders, 20.7% with substance use disorder (alcohol and cannabis), 17% had anxiety disorders while 17% with seizure disorder. Nearly 81.1% of patients (inmates) were advised pharmacotherapy while 18.9% were suggested further evaluation of illness and inpatient care at the higher center. Conclusion: The collaborative care was successful in delivering psychiatry, neurology, and neurosurgery consultation with a Specialist–Doctor–Patient model to prison inmates.
Managing Customers' Satisfaction: Evidence from Mining User Generated Content on the Internet
Authors: Jia Sixue
Published: October 2018

Establishing the relation between online ratings and reviews provides a potentially inexpensive and effective way for karaoke managers to capture satisfaction and quality improvement information from customers. To this end, this study proposes an integrated approach that leverages text mining and empirical modeling to quantitatively correlate user generated content on the internet. From Dianping.com (a Chinese crowd-sourced online review community), 47,069 pairs of karaoke rating and review were examined, with major topics identified. Subsequently, multilinear regression was employed to screen out the most impactful factors that influence overall, environment, sound effect, and service ratings. Managerially, the idea of triggering the synergistic benefit from customer ratings and reviews is referential for market practitioners both within and beyond the karaoke industry.
Assessing the Value of Routine Pathologic Examination of Resected Femoral Head Specimens After Femoral Neck Fracture
Authors: Davis Jason A. , Rohlfing Geoffrey , Sagouspe Kenan , Brambila Maximino
Published: October 2018

Introduction:

The purpose of this study was to evaluate the efficacy of routine pathologic examination (PE) of femoral head (FH) specimens after arthroplasty for acute femoral neck fractures and to determine the cost.

Methods:

This was a retrospective chart review of 850 acute femoral neck fractures treated with hemiarthroplasty or total hip arthroplasty These were evaluated to determine whether the FH was sent for PE, the resultant findings, alterations in medical treatment, and cost.

Results:

A total of 466 FH specimens (54.8%) were sent to pathology. Four (0.9%) were positive for a neoplastic process. All four had a known history of cancer, antecedent hip pain, or an inappropriate injury mechanism. None of the findings resulted in an alteration in medical treatment. The average cost of PE was $195 USD.

Discussion:

The routine PE of FH specimens after arthroplasty for femoral neck fractures is not warranted and uneconomic. Sending the FH for PE, only when clinically indicated, rather than routine, will result in notable savings for the healthcare system.

Level of Evidence:

Level IV
A Systematic Approach to the Understanding of National Security in the Legal Dimension
Authors: Iroshnikov Denis V.
Published: October 2018

Nowadays, security issues are critically burning for the world community, the State and society as well as for an individual. Practical activities of states and other structures which ensure national security in general and its certain types in particular must be based on a comprehensive scientific study of such category as “national security" primarily from the philosopho-legal point of view. This is particularly reflected in the development of the science of security (SoS). This article presents a comprehensive fundamental philosopho-legal study of the national security system. The category "national security" is multidimensional and includes such types as state security, public security, personal security, information security, environmental security, transport security and others. In the article there is an attempt to reconsider the category of "national security" from the point of view of a systematic approach to the analysis of the basis of differentiation of certain types in its system. The study is aimed at understanding the essence, nature and characteristics of national security. The results of this study can be used in public administration and legal confirmation of political decisions. The author comes to the conclusion that it is possible to distinguish national security into types in terms of 1 – a security object (interest to be protected) which therefore is divided into "social" (primary) and "non-social" (secondary) and in terms of 2 – a source of a threat.
Validação de uma Escala Multidimensional para o Uso de Mídias Sociais
Authors: Queiroz Larissa Soares de , Luft Maria Conceição Melo Silva
Published: October 2018

Objetivo:O presente estudo objetiva validar uma escala multidimensional para mensurao do comportamento de utilizao de mdias sociais, por meio da Teoria do Comportamento Planejado - TPB (Ajzen, 1991), em uma amostra de usurios de Internet brasileiros. Mtodo:Foram abordados os caminhos e procedimentos para a validao da escala estabelecida por Analise Fatorial Confirmatria, em uma amostra de 165 internautas brasileiros de todas as regies do pas.Originalidade/Relevncia:Apesar de basear-se em um modelo terico consagrado, este estudo possui certo teor de originalidade medida que a escala construda pode ser utilizada na verificao do comportamento do usurio em diversas modalidades de mdias sociais.Resultados:A anlise dos dados apresentou a escala multidimensional proposta com 24 itens de construto assim como os resultados obtidos por meio da Anlise Fatorial Confirmatria (AFC) que promoveram o ajustamento da escala, resultando na validao de 19 itens e, consequentemente, da estrutura que a abarca, alcanando ndices satisfatrios nos critrios de confiabilidade, validade convergente e validade discriminante. Contribuies tericas/metodolgicas:A tentativa de construo de uma escala para o uso de mdias sociais, referenciada na TPB, se provou consistente de modo a contribuir para o avano de pesquisas sobre adoo de mdias sociais e comportamento dos usurios.Contribuies sociais / para a gesto:De igual modo, tal escala tambm pode ser utilizada por profissionais na investigao do engajamento de clientes com aplicativos de mdia social e dedues sobre o comportamento volitivo.