bluuebunny/crossref_metadata_2025 huggingface dataset:
Die Bybel en ons Afrikaanse Volkerebeleid
Authors: Spoelstra B.
Published: June 2013

Ons misbruik die Bybel wanneer ons eers ons beleid opstel en daarna in die Bybel bewyse vir ons beleid gaan soek. So is daar byvoorbeeld, mense wat sê dat God die nie-blankes vervloek het; of dat die Bybel ’n huwelik tussen ’n blanke en nie-blanke uitdruklik verbied; of dat rassevermenging as sodanig sonde is.
Die Godsbeskouing van C. A. Van Peursen
Authors: Helberg A. N.
Published: June 2013

Om die filosofie van Van Peursen en in besonder sy Godsbeskouing goed te verstaan, is dit noodsaaklik om eers te let op die besondere metode en uitgangspunt waarvan hy gebruik maak. Want dit is juis met hierdie metode en uitgangspunt as benaderingswyse waarmee hy trag om antwoord te gee op die vraag wie of wat God is.
Kritiese waardering van ons Gereformeerde sendingbeleid
Authors: Vonkeman J.
Published: June 2013

Wat bedoel ons eintlik niet die woord ‘Gereformeerd'? Dié woord het sy historiese kleur ‘sedert de 16e eeuw is Gereformeerd het in Nederland (ons voeg toe: ‘en in Suid-Afrika’) gebruikelijke woord voor de Protestantse godsdienst en kerk tegenover het Rooms-Katholicisme’.
Vrou en amp en die amp in die algemeen (2)
Authors: Spoelstra B.
Published: June 2013

Skrywer het as saamroeper van die Afrika-studiekommissie ’n rapport vir die sekretaris van die G.E.S. saamgestel en daarin ook die gegewens verkry van dr. J. D. Vorster (kyk vorige nr. I.d.S.) oor die vrou in die amp verwerk.
Gedragspraktyke t.o.v. die eenheidstruktuur: Skrif-belydenisskrifte-ondertekenings-formuliere/kerk in die nuwe Gereformeerde teologie in Nederland
Authors: Buytendach F. W.
Published: June 2013

Gesien die tydsduur wat vir die voordrag bewillig word, spreek dit vanself dat dié tema nie op ’n omvattende en deurtastend-indringende wyse uitgediep kan word nie. Dit kan dus uiteraard slegs op ’n baie beknopte, saaklike en selektief-beperkende manier aan die orde gestel word. Derhalwe buig ons ons soos volg daaroor.
Die predikant en sy prediking en die gereformeerde getuienis in die verlede en hede
Authors: Van der Vyver G. P. C.
Published: June 2013

Prediking is die van God gegewe roeping aan die kerk. Dit geld vir alle eeue. Vandag is die prediking en die teologiese wetenskap wat hom besig hou met die preekkunde weer eens in die branding van belangstelling.
Die posisie van die Helper in die sending
Authors: Van der Walt I. J.
Published: June 2013

Gedurende die aanvangsjare van die sending het die helper ’n onmisbare funksie vervul. Hulle het die onherbergsame binnelande geken, waardevolle kontakpunte vir die sendelinge geopen en hulle mense geestelik help voorlig en voorberei.
Die agogiese moment in die pastoraat
Authors: Duvenage A. P. C.
Published: June 2013

Die verwarring wat daar vandag in die diakonologiese groep vakke heers, word ten dele weerspieël in die verskeie uitdrukkings en woorde wat gebruik word. By verskillende mense het dit heeltemal verskillende inhoude. Daarom dink ek is dit nodig om te begin met ’n begripsbepaling, om dan later oor die saak te praat.
Die Dordtse Leerreëls ... bestry en bevestig
Authors: Snyman P. H.
Published: June 2013

Die stryd om dié deel van die geopenbaarde waarheid wat in die Dordtse Leerreëls bely word, duur al baie eeue lank. Hierdie referaat wil ná ’n kort oorsig oor die pogings tot ondermyning van die Skrifwaarheid aangaande die predestinasie aantoon dat in Romeine 9 nie alleen die uitverkiesing nie, maar ook die verwerping onomwonde geleer word.
Kan Sendinggeskiedenis van Kerkgeskiedenis ensiklopedies geskei word?
Authors: Spoelstra B.
Published: June 2013

Dr. A. Kuyper het met sy Encyclopaedie der Heilige Godgeleerdheid groot invloed op die ensiklopedie van die Gereformeerde teologie uitgeoefen. Hy neem Evangelistiek, Kerugmatiek en Apostoliek saam as Prosthetiek en grens die groep af as die wetenskap van die ‘methode die er toe leiden kan om wat nog buiten Christus staat te Kerstenen’.
Twintigste eeuse liturgiese vernuwing
Authors: Van der Merwe D. C. S.
Published: June 2013

Dwarsoor die wêreld sukkel die Kerk van Christus vandag met die ellende van betreklik of heeltemal leë kerke; met duisende en derduisende belydende lidmate wat net nie meer kerk toe gaan nie. Vir hierdie mense het die erediens eintlik ’n niksseggende leegheid of verouderd en verveligheid geword. Vir hulle is die kerk as instituut ’n volledige nul op ’n kontrak.
Oormatige bevolkingsaanwas en beheer daarvan
Authors: Van Rensburg N. J.
Published: June 2013

Wanneer hierdie saak naamlik die ontsaglik snelle mense-aanwas bespreek word, word die moreel etiese en godsdienstige aspekte daarvan dikwels of totaal geignoreer, of dan slegs heel oppervlakkige aandag aan geskenk. Ek glo egter dat die tyd nou oorryp is dat ook en veral in ons land met sy heterogene bevolking, daarop indringende wyse vanuit ’n Christelike standpunt besin moet word oor die hele aangeleentheid van oormatige bevolkingsaanwas.
Kerk as instituut ... en institusionalisering?
Authors: Office Editorial
Published: June 2013

Op teologiese gebied waarsku al meer stemme teen die onderskeiding tussen kerk as instituut en kerk as organisme en pleit dat die begrip kerk weer gelaai word met die Bybelse inhoud van kerk-wees omdat daar ’n Christen-wees deur die geloof is. ’n Mens hoor egter ook onder ons al meer hoe die term ‘kerk’ met ’n verskraalde instituut-betekenis gebruik word.
Die verhouding tussen Verbond en Koninkryk by Paulus – ’n Terreinverkenning
Authors: Buys P. J.
Published: June 2013

In die Gereformeerde teologiese besinning sedert die reformasie, het beide die verbond en die koninkryk ’n belangrike plek ingeneem. Reeds Calvyn het baie sterk met die verbondsgedagte geopereer – sodanig so dat hy die band van die verbond as die eenheidsband tussen die Ou en Nuwe Testament gesien het.
Historiese besef
Authors: Jooste J. P.
Published: June 2013

Met hierdie uitdrukking ontmoet ons twee bekende woorde wat ’n saak moet aandui wat by die eerste ontmoeting ’n heel voor die handliggende saak skyn te wees. Tog moet ons daarvoor gewaarsku word dat dit nie so ’n voor die hand liggende saak is nie en dat by nadere ontleding daarvan ons wel ’n bekende saak teëkom, maar nou in meer bewuste gestalte.
Twintigste eeuse liturgiese vernuwing
Authors: Van der Merwe D. C. S.
Published: June 2013

Fendt tipeer die Oosters-konserwatiewe uitgang van die Middel-eeue as ’n kommentaar by die liturgie van die tweede tot die vierde eeu na Christus. Hierdie ‘kommentaar’ het steeds geweldiger onderstreep, sin aangedui en gesimboliseer en so tot die huidige volheid aangegroei.
Die Gereformeerde Kerk en die merktekens van die ware Kerk. 'n Poging tot 'n openhartige en eerlike inventaris
Authors: Coetzee P. J.
Published: June 2013

Wat aan die Gereformeerde Kerk in Suid-Afrika oorgelewer is, moet die toets van die Skrif en Belydenis kan deurstaan. Om te buig vir die tradisie kan soms ongehoorsaamheid aan God beteken. ’n Gesonde binding aan die verlede bied egter perspektiewe vir die vervulling van ons roeping vandag en more.
Die doodstraf in Bybelse perspektief
Authors: Roeleveld L.
Published: June 2013

Die regverdiging van die doodstraf in Suid-Afrika bly ’n belangrike probleem. Gedurende die laaste jare het baie geskrifte daaroor verskyn, maar ’n regstreekse beroep op die leer van die Heilige Skrif het daarby agterweë gebly. Teoloë het wel aan die diskussie deelgeneem, maar hul het min melding van Skriftekste en uitleg van Skrifwoorde gemaak.
Reformasie versus revolusie – ’n prinsipiële oriëntering
Authors: Floor L. M.
Published: June 2013

Die twee begrippe reformasie en revolusie wat in die titel lynreg teenoor mekaar staan, het tog meer met mekaar as net die beginletters gemeen. Reformasie en revolusie is nie sommer twee abstrakte begrippe nie, maar twee leefwyses. In beide begrippe sit iets van ’n dinamiese drang: die bestaande moet gewysig word.
Iets over de kerkelijke situatie in Nederland in het licht van de belijdenis en de historie
Authors: Bos B. A.
Published: June 2013

Het is voor mij als buitenlander een voorrecht, door U te zijn uitgenodigd, om vandaag tot U te spreken over de kerkelijke situatie in Nederland. Uw belangstelling voor de Gereformeerde Kerken in Nederland is begrijpelijk, gezien de vele historische en geestelijke banden, welke Uw Kerk met de Kerken in Nederland heeft.
Die chiliasme in die Gereformeerde Kerk en ’n antwoord daarop (slot)
Authors: Wynbeek D. H. P.
Published: June 2013

Met groot versigtigheid wil ek my nou waag aan ’n indeling van die boek Openbaring. Hierdie indeling is gebou op die geheel-indruk van Openbaring. Indelingsbeginsels wat ek wil afwys, is die wat in hoofsaak berus op die aantal 7-talle in die boek, nl. 7 briewe, 7 seëls, 7 basuine en die 7 laaste plae.
Die homiletiek soos blyk uit die vraelyste
Authors: Spoelstra B.
Published: June 2013

Uiteraard getuig haas elke vraelys wat ingevul is — en daar is omtrent 70 — dat die invuller die homiletiek bestudeer het. Dit lei tot dikwels woordeliks enerse antwoorde en tog kom daar dan verrassende en soms selfs ‘skokkende’ opinies
Die prediker en die prediking aan die hand van die gegewens uit die vraelys
Authors: Malan C. J.
Published: June 2013

Die antwoorde op die vraag: Wat beoog u met u prediking? het ’n ryk skakering van antwoorde opgelewer, almal suiwer-Skriftuurlik. Die predikers beoog met die prediking: die stigting en bouing van die gemeente in geloof en godsvrug; verklaring en toepassing van die Woord tot eer van God; eenvoudig-aktuele oopvlekking van die Woord van God tot vermaning en vertroosting; om Jesus Christus as Gekruisigde en Verlosser te verkondig; die bantering van die beloftes en eise van die Genadeverbond; om tot geloof en bekering op te roep in die verkondiging van oordeel en genade.
Die hoorder en die prediking – aan die hand van die vraelyste
Authors: Venter C. J. H.
Published: June 2013

Die volgende uitgangspunte word vir hierdie onderwerp aanvaar. Dit word deurgaans veronderstel.
Christus as hoof van die kerk en Art. 46 van die Kerkorde
Authors: Van der Walt J. J.
Published: June 2013

Die Presbiteriale Kerkregering handhaaf die kerk as ’n organiese eenheid wat lewe uit en tot en onderhorig aan sy Persoonlike Hoof, Jesus Christus die Lewende en die Teenwoordige in sy kerk. Die Dordtse Kerkorde, die klassieke voorbeeld van presbiteriale Kerkregering, is prinsipieel en histories gegrond op die Skriftuurlike belydenis dat Christus die organiese, en gevolglik enigste, Hoof van God se kerk is (Kol. 1:18).
Die praktyk van kerkvisitasie
Authors: Spoelstra B.
Published: June 2013

Die visitasie moet uiteraard verstaan word in die volle sin van die Gereformeerde kerkregering. Dit gaan beslis nie oor ’n vertolking van een artikel in ’n Kerkorde soos van ’n artikel in ’n wet of sekulêre sisteem nie.
Sensiwiteitsopleiding met besondere verwysing na Wilgespruit
Authors: Spoelstra B.
Published: June 2013

Aangesien Psigologie nie my vakgebied is nie bepaal ek my hoofsaaklik by die Derde Tussentydse Verslag van die Kommissie van Ondersoek na sekere Organisasies t.w. die Schlebusch-kommissie, wat voor die Parlement gedien het. Hierdie kommissie het opdrag gehad om verslag te doen oor die doelstellings, organisasie en finansiering van die Nasionale Unie van Suid-Afrikaanse studente en andere.
Die ekumeniese roeping van die kerk
Authors: Coetzee P. J.
Published: June 2013

Op die jongsgehoue kongres van die Dogmatologiese Werkgemeenskap (1973) is die wens uitgespreek ‘dat ons aktueel en konkreet in ons studie moet wees’. In hierdie voordrag vind u ’n poging om hieraan enigsins gevolg te gee.
Die verhouding van regverdiging en heiliging in die moderne teologie
Authors: Schulze L. F.
Published: June 2013

Wie hom met hierdie tema besig hou, vind ’n allegaartjie uit die teologiese oond. Daarin is bekende (bybels-konfessionele) kos, gelewer deur die voortgaande diskussie rondom Rome en die Reformasie en deur skrywers soos Dantine, Gloege, Montgomery en vele méér vertroudes, wat die betekenis van die Reformasie vir ons tyd opnuut beklemtoon. Ons kan hier selfs die konferensie van die Lutherse wêreldfederasie in Helsinki (1963) noem.
Charismata – Geestesgawes
Authors: Coetzee J. C.
Published: June 2013

Daar word tans ontsaglik baie oor hierdie saak geskrywe en gepubliseer. Ek is nie in staat en wil ook nie probeer om ander mense se standpunte hieroor te bespreek of te beoordeel nie. Ook wil ek nie ’n beoordeling van die toenemende ‘charismatiese’ neigings en verskynsels van ons tyd gee nie.
Metodiste, Metodisme en sending
Authors: Van der Merwe D. C. S.
Published: June 2013

So pas het by Pro Rege, Potchefstroom, ’n waardevolle en belangrike studie cor die Metodisme verskyn, nl. ‘Revival of Reformasie’ van die hand van proff. G. C. P. van der Vyver. P. J. Coetzee en P. W. Buys. Wat hier volg sluit daarby ten nouste aan. Ek vereenselwig my ook ten volle met hulle kritiek op die Metodisme as geestesrigting en herhaal dit daarom, sover moontlik, nie in onderstaande tentatiewe studie nie. Ek noem dit tentatief omdat dit maar ’n begin is, wat later vollediger uitgewerk moet word.
Opinions about science and faith amongst Southern African clergy and theologians from the Reformed church tradition
Authors: Van Dyk Peet J.
Published: June 2013

The main objective was to determine the opinions of Southern African clergy and theologians (from the Reformed church tradition) about science and faith. A secondary objective was to do an initial exploration amongst other church denominations. A total of 1770 structured electronic questionnaires were sent out via Email to all clergy belonging to the �Nederduitse Gereformeerde� and �Nederduitsche Hervormde� churches of which 108 were received back. The SPSS 20 statistical program was used to analyse the data. Most participants expressed a positive opinion about science. This positive opinion was closely linked to the general conviction that science and faith are not hostile towards each other, that science and faith can be reconciled and that the cosmos shows clear signs of divine intelligent design. Most participants nominally expressed strong anti-fundamentalist views regarding the authority of the Bible, but they did not necessarily appreciate the full implications of such a view, that is, given the prescientific cosmology of the Bible, it is highly unlikely that the biblical and scientific views of the natural world would be compatible. In conclusion, one could say that most participants were positively inclined towards science but arguably for the wrong reasons.
'My tongue is the stylus of a skilled scribe' (Ps 45:2c): If so in the Scriptures, then why not also in translation?
Authors: Wendland Ernst R.
Published: June 2013

In this study, I survey seven characteristics of the poetic-rhetorical style of Psalm 45, with special reference to the �sound effects� (phonological features) of the Hebrew text. This leads to a brief discussion of the translation of this psalm in Chewa, a Bantu language of southeastern Africa. How �skilful� does this version sound in the vernacular, and why is this an important aspect of the translator�s task in order to ensure that the �good word� (טוֹב֗ דּבר֘) of the Bible is faithfully as well as forcefully transmitted? Suggestions will be offered to indicate how the current standard Chewa versions might be improved so as to �stir the heart� (בּיִ לִ רחשׁ֘) of listeners also today. The results of the present study may be instructive and/or applicable in varying degrees to similar projects that aim to render the biblical text poetically, rhetorically and oratorically in the language of translation.
Infinitesimal Rigidity of Convex Polyhedra through the Second Derivative of the Hilbert–Einstein Functional
Authors: Izmestiev Ivan
Published: June 2013

Abstract. The paper presents a new proof of the infinitesimal rigidity of convex polyhedra. The proof is based on studying derivatives of the discrete Hilbert–Einstein functional on the space of “warped polyhedra” with a fixed metric on the boundary.

The situation is in a sense dual to using derivatives of the volume in order to prove the Gauss infinitesimal rigidity of convex polyhedra. This latter kind of rigidity is related to the Minkowski theorem on the existence and uniqueness of a polyhedron with prescribed face normals and face areas.

In the spherical space and in the hyperbolic-de Sitter space, there is a perfect duality between the Hilbert–Einstein functional and the volume, as well as between both kinds of rigidity.

We review some of the related work and discuss directions for future research.
Existence and stability of quasi-periodic solutions for derivative wave equations
Authors: Berti Massimiliano , Biasco Luca , Procesi Michela
Published: June 2013

In this note we present the new KAM result in [3] which proves the existence of Cantor families of small amplitude, analytic, quasi-periodic solutions of derivative wave equations, with zero Lyapunov exponents and whose linearized equation is reducible to constant coefficients. In turn, this result is derived by an abstract KAM theorem for infinite dimensional reversible dynamical systems.
The Role of Occupational Therapy in Promoting Equal Access for Mental Health Service Users with Physical Disability
Authors: Morley Mary
Published: June 2013

People with serious mental health problems have a high incidence of long-term conditions and associated physical disability. This practice analysis considers the negative experience of some disabled service users in a mental health organisation in relation to environmental challenges and describes actions taken by the occupational therapy service to improve these. It introduces the role of a multidisciplinary ‘design authority group’ to co-ordinate technical and clinical input to capital projects. The article argues that, by taking a more holistic approach, occupational therapy services both make a real difference to service user experience and raise the profile of the profession's contribution in this area.
Understanding Twitter
Authors: Maclean Fiona , Jones Derek , Carin-Levy Gail , Hunter Heather
Published: June 2013

This opinion piece introduces, defines and considers the application of Twitter within occupational therapy research and education. It defines the social networking tool and then examines its potential for use in occupational therapy education, by students and within research. The opinion piece raises critical issues that the profession must address in relation to the responsible use of Twitter but strongly advocates it as a form of social media that needs to be better understood and utilised by educators, researchers and practitioners within occupational therapy.
The Role of Imitation in Global High-Tech Product Development
Authors: Baradello Carlos S. , Salazzaro Andrea
Published: June 2013

Innovation is historically linked to the creation of large departments of Research & Development (R&D) that require large investments in assets. With markets globalization, the department of R&D remains one of the pillars of innovation, but it needs a rethinking of the management. The new R&D department needs to change by a vision of closing within the corporate boundaries to an opening view to the outside. Product development is carried out through several conducts taken by companies ranging from Reverse R&D processes to collaborations with direct competitors for the sharing of risks and knowledge. Generally, and more precisely in high-tech industry, technological advancements and the ability to develop fast-cycle processes by followers are generating an abatement of the timely barriers that allowed first movers to maintain competitive advantages; so, in global markets, the management of imitative strategies becomes of primary importance.
The SPRINTARS version 3.80/4D-Var data assimilation system: development and inversion experiments based on the observing system simulation experiment framework
Authors: Yumimoto K. , Takemura T.
Published: June 2013

Abstract. We present an aerosol data assimilation system based on a global aerosol climate model (SPRINTARS) and a four-dimensional variational data assimilation method (4D-Var). Its main purposes are to optimize emission estimates, improve composites, and obtain the best estimate of the radiative effects of aerosols in conjunction with observations. To reduce the huge computational cost caused by the iterative integrations in the models, we developed an off-line model and a corresponding adjoint model, which are driven by pre-calculated meteorological, land, and soil data. The off-line and adjoint model shortened the computational time of the inner loop by more than 30%. By comparing the results with a 1yr simulation from the original on-line model, the consistency of the off-line model was verified, with correlation coefficient R^2 > 0.97 and absolute value of normalized mean bias NMB < 7% for the natural aerosol emissions and aerosol optical thickness (AOT) of individual aerosol species. Deviations between the off-line and original on-line models are mainly associated with the time interpolation of the input meteorological variables in the off-line model; the smaller variability and difference in the wind velocity near the surface and relative humidity cause negative and positive biases in the wind-blown aerosol emissions and AOTs of hygroscopic aerosols, respectively. The feasibility and capability of the developed system for aerosol inverse modelling was demonstrated in several inversion experiments based on the observing system simulation experiment framework. In the experiments, we generated the simulated observation data sets of fine- and coarse-mode AOTs from sun-synchronous polar orbits to investigate the impact of the observational frequency (number of satellites) and coverage (land and ocean). Observations over land have a notably positive impact on the performance of inverse modelling comparing with observations over ocean, implying that reliable observational information over land is important for inverse modelling of land-born aerosols. The experimental results also indicate that aerosol type classification is crucial to inverse modelling over regions where various aerosol species co-exist (e.g. industrialized regions and areas downwind of them).
Entropy-information perspective to radiogenic heat distribution in continental crust
Authors: Singh R. N. , Manglik A.
Published: June 2013

Abstract. Depth distribution of radiogenic heat sources in continental crust is an important parameter that controls its thermal structure as well as the mantle heat flow at the base of continental lithosphere. Various models for the depth distribution of radiogenic heat sources have been proposed. Starting from constant and exponential models based on linear heat flow–heat generation relationship the present-day layered models integrate crustal structure and laboratory measurements of radiogenic heat sources in various exposed rocks representing crustal composition. In the present work, an extended entropy theory formalism is used for estimation of radiogenic heat sources distribution in continental crust based on principle of maximum entropy (POME). The extended entropy principle yields a constant heat generation model if only a constraint given by total radiogenic heat in the crust is used and an exponential form of radiogenic heat sources distribution if an additional constraint in the form of a second moment is used in the minimization of entropy.
Prevalence of HPV in Adolescents Virgins and Sexually Active at a University Hospital in the City of Rio de Janeiro, Brazil
Authors: Eleutério Renata Mírian Nunes , Oliveira Marco Aurélio Pinho de , Jacyntho Cláudia Márcia de Azevedo , Rodrigues Josele de Freitas , Cavalcante Diane Isabelle Magno , Eleutério Junior José
Published: June 2013

Sexually transmitted diseases (STDs) are common worldwide, with especially alarming numbers in Brazil. Among the most common infections is human papillomavirus (HPV). The possibility of the nonsexual transmission of HPV is not well defined and is the subject of debate. This study aimed to identify the prevalence of HPV in adolescents with no history of sexual intercourse compared with a group of similar age with sexual activity. 100 adolescents were evaluated with at least two years after menarche, who attended from January 2007 to January 2009 at the University Hospital Pedro Ernesto, Rio de Janeiro, Brazil. Among the adolescents, 50 had intact hymen and 50 reported regular sexual activity. For patients without sexual intercourse (group 1) we collected material from vestibule and for patients with sexual activity (group 2) we collected material from vagina and endocervix. The search for HPV-DNA 2nd generation hybrid capture (hC2) was performed. In group 1 the test was positive in 3 cases (6%). In the second group, 33 cases (66%) were positive for at least one site. The positivity in girls with sexual activity is high. On the other hand, the HPV infection, although rare, may occur in girls without sexual intercourse.
"It Is Not Right For a Man Who Worships God to Repay His Neighbor Evil For Evil": Christian Ethics in Joseph and Aseneth (Chapters 22–29)
Authors: Nir Rivka
Published: June 2013

This article argues for the Christian provenance of chapters 22–29 of Joseph and Aseneth. In particular, the article interprets these chapters as promoting the adoption of Christian ethics toward enemies as a means for obtaining salvation in the Church, which is personified by Aseneth. Framing this notion is the recurring formula, “It is not right for a man who worships God to . . .” This repetitive pattern draws the whole book into a coherent literary and ideological unit, and highlights the key principles of Christian ethics that it intends to convey.
Médiation des technologies de l’information et de la communication (TIC) dans la pratique sociale en Protection de la jeunesse
Authors: Goulet Martin , Jochems Sylvie , Huot François
Published: June 2013

Les résultats d’un mémoire sur la médiation des technologies de l’information et de la communication (TIC) dans la pratique sociale d’un groupe d’intervenants sociaux des services de la Protection de la jeunesse seront présentés.

Une méthodologie qualitative privilégiant l’ethnométhodologie a servi à recueillir les données qui ont ensuite été analysées. Huit entrevues d’une durée moyenne d’une heure ont été réalisées avec des intervenants et intervenantes de la Direction de la protection de la jeunesse d’un centre jeunesse. Le matériel ainsi amassé a été traité dans une perspective d’appropriation des technologies.
Réflexion éthique sur l’utilisation des médias sociaux dans les Auberges du coeur
Authors: Langlois Lyse , Gendreau Isabelle
Published: June 2013

L’arrivée de Facebook dans la vie des jeunes crée aussi de nouvelles réalités dans les organismes qui travaillent avec eux. Les Auberges du coeur ont commencé à utiliser Facebook dans leur pratique d’intervention il y a quelques années. Cette expérience a suscité différents questionnements. La réflexion éthique a été choisie pour aider les équipes de travail à baliser cette pratique d’intervention émergente. La démarche et les principales conclusions du comité ad hoc formé pour réaliser cette réflexion éthique sur l’utilisation des médias sociaux dans les Auberges sont exposées dans le présent article.
Automated Analysis of Intima‐Media Thickness
Authors: Saba Luca , Montisci Roberto , Famiglietti Luca , Tallapally Niranjan , Acharya U. Rajendra , Molinari Filippo , Sanfilippo Roberto , Mallarini Giorgio , Nicolaides Andrew , Suri Jasjit S.
Published: June 2013

Objectives

In recent years, the use of computer‐based techniques has been advocated to improve intima‐media thickness (IMT) quantification and its reproducibility. The purpose of this study was to test the diagnostic performance of a new IMT automated algorithm, CARES 3.0, which is a patented class of IMT measurement systems called AtheroEdge (AtheroPoint, LLC, Roseville, CA).

Methods

From 2 different institutions, we analyzed the carotid arteries of 250 patients. The automated CARES 3.0 algorithm was tested versus 2 other automated algorithms, 1 semiautomated algorithm, and a reader reference to assess the IMT measurements. Bland‐Altman analysis, regression analysis, and the Student t test were performed.

Results

CARES 3.0 showed an IMT measurement bias ± SD of −0.022 ± 0.288 mm compared with the expert reader. The average IMT by CARES 3.0 was 0.852 ± 0.248 mm, and that of the reader was 0.872 ± 0.325 mm. In the Bland‐Altman plots, the CARES 3.0 IMT measurements showed accurate values, with about 80% of the images having an IMT measurement bias ranging between −50% and +50%. These values were better than those of the previous CARES releases and the semiautomated algorithm. Regression analysis showed that, among all techniques, the best t value was between CARES 3.0 and the reader.

Conclusions

We have developed an improved fully automated technique for carotid IMT measurement on longitudinal ultrasound images. This new version, called CARES 3.0, consists of a new heuristic for lumen‐intima and media‐adventitia detection, which showed high accuracy and reproducibility for IMT measurement.
Fetal Size Charts for a Population From Cali, Colombia
Authors: Briceño Freddy , Restrepo Humberto , Paredes Ricardo , Cifuentes Rodrigo
Published: June 2013

Objectives

To create reference charts for fetal sonographic biometric measurements in a population of pregnant women living in the third largest city in Colombia and compare them with charts included in ultrasound machines.

Methods

The data were obtained from women with a single pregnancy and confirmed gestational (menstrual) age between 12 and 40 weeks. All women were recruited specifically for the study, and every fetus was measured only once for biparietal diameter, head circumference, abdominal circumference, and femur length. Raw data for each fetal measurement were modeled by fitting regression models separately to estimate the mean and standard deviation as a function of gestational age. Percentile curves were constructed for each measurement by gestational age using these two regression models. We compared our mean z scores with those expected by reference equations.

Results

Measurements were obtained for 792 fetuses. A cubic polynomial model was the best‐fitted regression model to describe the relationships between each fetal measurement and gestational age. The standard deviation for each measurement was estimated by simple linear regression as a function of gestational age. Comparison of our mean z scores with those by reference equations showed significant differences in some fetal measurements (P < .01).

Conclusions

We present a set of reference percentile charts, tables, and formulas for fetal biometric measurements from a Colombian population. We believe that our fetal charts could be used nationwide in Colombia; nevertheless, a national sample will contribute to their validation and promotion of the development of Colombian fetal size charts.
Read anything mean lately? Associations between reading aggression in books and aggressive behavior in adolescents
Authors: Stockdale Laura A. , Coyne Sarah M. , Nelson David A. , Padilla‐Walker Laura M.
Published: June 2013

Although there have been hundreds of studies on media violence, few have focused on literature, with none examining novels. Accordingly, the aim of the current study was to examine whether reading physical and relational aggression in books was associated with aggressive behavior in adolescents. Participants consisted of 223 adolescents who completed a variety of measures detailing their media use and aggressive behavior. A non‐recursive structural equation model revealed that reading aggression in books was positively associated with aggressive behavior, even after controlling for exposure to aggression in other forms of media. Associations were only found for congruent forms of aggression. Implications regarding books as a form of media are discussed. Aggr. Behav. 39:493–502, 2013. © 2013 Wiley Periodicals, Inc.
Seamless Integration of an Elastomer with Electrode Matrix and its In‐Situ Conversion into a Solid State Electrolyte for Robust Li‐Ion Batteries
Authors: Ombaba Matthew M. , Vidu Ruxandra , Jayaraman Logeeswaran Veerayah , Triplett Mark , Hsu Jonathan , Islam M. Saif
Published: June 2013

A unique way of robustly integrating an elastomer film onto a graphitic anode and then post process it into a solid‐state electrolyte for lithium‐ion battery applications is reported. The mutual solvability of the elastomer and the binder of the graphitic anode (carboxymethyl cellulose, (CMC)) in dimethylformamide facilitates the fusion of the two heterogeneous layers. Dimensional dynamics evolved during the integrated elastomer conversion into a solid electrolyte by liquid electrolyte uptake reveal a notable preferential uniaxial elongation along the normal plane. In contrast, the non‐integrated counterpart elongates along the transversal axis. These elastomer exhibits high ionic conductance (≈10–2 S cm−1). Half‐cells constructed with our electrolyte integrated electrode exhibit magnificent reduction and oxidation (REDOX) behavior. The efficient charge transfer across the snugly confined semi‐solid electrolyte/electrode interface layer leads to a high rate capability of 0.31 mAh cm−2 (41 mAh g−1) at 2 C which is double that of a graphitic conventional half‐cell. Unlike regular graphitic electrodes which degrade over time, this electrode remains robust, thanks to its propensity to retain its inherent elasticity. This work demonstrates a facile and scalable paradigm, in fabrication of flexible electrolytes that can easily be integrated to 3D devices and opens opportunities for developing, structurally conformable batteries of varied geometries.
Highly Stretchable, Sparse, Metallized Nanofiber Webs as Thin, Transferrable Transparent Conductors
Authors: Soltanian Saeid , Rahmanian Rowshan , Gholamkhass Bobak , Kiasari Nima Mohseni , Ko Frank , Servati Peyman
Published: June 2013

The need for transparent conductors (TCs) that are capable of withstanding high mechanical deformation in comparison to the brittle indium tin oxide (ITO) films is paramount for roll‐to‐roll production of flexible and stretchable displays, signage systems, lighting devices and solar panels with stringent weatherability requirements. This paper reports a highly stretchable TC comprising of a web of core‐shell nanofibers, which mimics the fibrous structure of natural systems such as veins of a leaf or nerve systems. The TC web demonstrates high transparency, low sheet resistance, and unprecedented stretchability and stability over repeated stretching. The nanofiber TC web can be transferred to different substrates, which is manifested by the transfer onto an organic solar cell, demonstrating a photovoltaic performance comparable to that of a device with an ITO electrode. This work presents a technological platform, scalable for the manufacturing of large area transparent conductors for flexible and stretchable displays, electronics and solar cells on unconventional substrates such as rubber, fabric and paper.
Osteogenesis imperfecta type V: Clinical and radiographic manifestations in mutation confirmed patients
Authors: Kim Ok‐Hwa , Jin Dong‐Kyu , Kosaki Keisuke , Kim Jung‐Wook , Cho Sung Yoon , Yoo Won Joon , Choi In Ho , Nishimura Gen , Ikegawa Shiro , Cho Tae‐Joon
Published: June 2013

Osteogenesis imperfecta (OI) type V is a specific OI phenotype with interosseous membrane calcification of the forearm and hyperplastic callus formation as typical features. The causative gene mutation for OI type V has been recently discovered. The purpose of this report is to review the clinical and radiographic characteristics of mutation confirmed OI type V in detail. Sixteen (nine familial and seven sporadic) patients were enrolled in the study. Blue sclera and dentinogenesis imperfecta were not evident in any patient. However, hypodontia in the permanent teeth, ectopic eruption, and short roots in molars were additionally observed in 11 patients. Of the radiographic abnormalities, cortical thickening and bony excrescence of interosseous margin of the ulna was the most common finding, followed by overgrowth of the olecranon and/or coronoid process of the ulna. Slender ribs and sloping of the posterior ribs with or without fractures were also a consistent finding. Hyperplastic callus was detected in 75% of patients and was commonly encountered at the femur. Heterotopic ossification in the muscles and tendon insertion sites were noted in four patients, which resulted in bony ankylosis or contracture of joints. The current study confirms common clinical and radiographic findings of OI type V and reports additional phenotypic information. These observations provide clues to recognize OI type V more promptly and guide to direct targeted molecular study. © 2013 Wiley Periodicals, Inc.
Process optimization of electrospun silk fibroin fiber mat for accelerated wound healing
Authors: Chutipakdeevong Jesada , Ruktanonchai Uracha Rungsardthong , Supaphol Pitt
Published: June 2013

Considering the outstanding biocompatibility of Bombyx mori silk fibroin, this study is designed to fabricate biomimetic nanofibrous structure made of silk fibroin, which can enhance cell activities for tissue formation. The electrospinning of blend of silk fibroin with low molecular weight poly(ethylene‐oxide) (PEO) is explored with ease of preparation for high productivities. The average diameter of electrospun silk fibroin (eSF) is decreased from 414 ± 73 to 290 ± 46 nm after PEO extraction. To induce the desired cellular activity, the surface of the eSF fibers is modified with fibronectin by using the carbodiimide chemistry method. The potential use of the obtained wound healing material is assessed by indirect cytotoxicity evaluation on normal human dermal fibroblast (NHDF) in terms of their attachment and cell proliferation. The surface‐modified eSF nanofiber mats show good support for cellular adhesion and spreading as a result of fibronectin grafting on the fiber surface, especially for cell migration inside the fibrous structure. These results demonstrate a new fabrication technique of surface‐modified silk fibroin electrospun nanofibers for biomedical application; with the ability to accelerate wound healing. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 3634–3644, 2013
Thermal degradation of poly(3‐hydroxybutyrate) and poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) in drying treatment
Authors: Chen Yun , Chou I‐Ning , Tsai Ya‐Hui , Wu Ho‐Shing
Published: June 2013

This study examines the isothermal treatment of poly(3‐hydroxybutyrate) (PHB) and poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) (PHBV) powders and films. The PHB and PHBV crystallinities were determined using X‐ray diffractometry, and shown to increase with temperature (130–150°C) and then decreased from 55% to 45% at 180°C. The crystal morphology of crystal planes (101) and (111) became sharp at a high temperature. The weight average molecular weight (Mw) of PHB decreased from 1,028,000 to 41,800 g/mol when heated at 180°C for 30 min. The molecular weight of PHB decreased more rapidly than that of PHBV with time. No peak signal was observed in gel permeation chromatography after heating at 150°C because the solubility of PHB changed with crystallinity. The thermal behaviors of PHB and PHBV were analyzed by differential scanning calorimetry and thermogravimetric analysis. The roughness, contact angle, and surface morphology of PHB and PHBV films were also measured to determine the surface properties. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 3659–3667, 2013
Cyclic alkyl ketene oligomers
Authors: Yoshida Yutaka , Isogai Akira
Published: June 2013

Two alkyl ketene oligomers (AKOs) with almost 100% purities were prepared in high yields of 80–90% from palmitic acid chloride and alkyl ketene dimer (prepared from palmitic acid chloride) in the presence of amine promoters. Two AKOs thus obtained had quite similar molecular weights (1000–10,000), carbon/hydrogen contents, X‐ray diffraction patterns, solution‐state 13C‐NMR spectra, and water‐contact angles. However, two AKOs had different size‐exclusion chromatograms, differential scanning calorimetric curves, FTIR spectra, and solution‐state 13C‐NMR spectra for 13C‐labeled AKOs. Based on the 13C‐NMR spectra of 13C‐unlabeled AKOs, AKOs are likely to have cyclic structures, thus having the limited molecular weights of <10,000. The results of FTIR spectra and 13C‐NMR spectra of 13C‐labeled AKOs indicated that three different repeating units were linked with various molar ratios and various connection patterns and combinations, constituting the cyclic AKOs. As a result, 13C‐NMR spectra of 13C‐labeled AKOs showed quite a number of carbon signals due to various 13CO and 13CC structures present in AKOs. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 3668–3673, 2013
Synthesis and properties of a novel superabsorbent polymer composite from microwave irradiated waste material cultured Auricularia auricula and poly (acrylic acid‐co‐acrylamide)
Authors: Cheng Zhiqiang , Li Junfeng , Yan Juntao , Kang Lijuan , Ru Xin , Liu Mengzhu
Published: June 2013

A novel superabsorbent polymer composite was successfully synthesized from waste material cultured Auricularia auricula (WMCAA) and poly (acrylic acid‐co‐acrylamide) (P(AA‐co‐AM)) using microwave irradiation. Optimal synthesis conditions were determined by investigating the water absorbency of the superabsorbent composite. The effects associated with weight ratios of WMCAA, acrylamide (AM) monomers, initiators, and acrylic acid (AA) crosslinkers, as well as the degree of neutralization of AA were examined. The maximum water absorbencies were found to be 1548 g/g (distilled water) and 72 g/g (0.9% NaCl solution). Fourier transform infrared spectroscopy (FTIR) was applied to determine the molecular structure of the superabsorbent composite, and scanning electron microscopy (SEM) was used to demonstrate the characteristic compact and porous structure of the material. Further studies conducted via transmission electron microscopy (TEM) revealed the formation of a novel interpenetrating polymer network structure. Thermogravimetry/differential thermal (TG/DTG) analysis demonstrated improved thermal stability in the composite material compared with WMCAA. Additionally, high water absorption rates observed in the polymer during the swelling process indicated first‐order kinetics. The water absorption and adsorption of the superabsorbent composite were studied in a variety of fertilizer solutions, revealing an indirect relationship between water absorbing ability and fertilizer concentration. Conversely, a direct relationship was observed between absorbed fertilizer and fertilizer concentration. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 3674–3681, 2013
Robust Stabilization of Ship Course Via Convex Optimization
Authors: Yu Jiafeng , Yan Zhibin , Wang Jian , Li Qinsheng
Published: June 2013

For ship course control, this paper presents a novel nonlinear controller design method using the sum of squares (SOS) technique combined with the dual of Lyapunov's stability theorem based on density function. Varying load condition and ship speed are seen as uncertainty, so the robust nonlinear controller is designed based on the suggested method. Simulations are performed by taking an ocean‐going ship model as example.
Determination of the stress biomarker corticosterone in serum of tumor‐bearing mice by surrogate‐based liquid chromatography–tandem mass spectrometry
Authors: Kang Lei , Jiang Tao , Ge Xinxing , Peng Liang , Xie Ying , Luan Xin , Li Huafang , Rong Zhengxing , Qi Hong , Chen Hongzhuan
Published: June 2013

A simple, robust and specific liquid chromatography tandem mass spectrometry (LC‐MS/MS) method was developed and validated to determine the concentration of corticosterone (Cort) which is usually regarded as a stress biomarker in mouse serum. Since Cort is an endogenous hormone, a ‘surrogate analyte’ strategy was adopted using the stable isotope‐deuterated corticosterone as a surrogate of the authentic analyte to generate the calibration curve. With telmisartan as the internal standard, the analytes were extracted with methanol, ethanol and acetone (1:1:1, v/v/v) and separated on a XTerra C18 (2.1 × 50 mm, 3.5 µm) column using a mobile phase consisting of 0.2% formic acid in water–methanol (30:70, v/v). Detection was performed in multiple reaction monitoring mode with an electrospray ionization source operated in positive ion mode. The standard curves were linear (r2 > 0.999) over the dynamic range of 8.60–430 ng/mL, with a lower limit of quantification of 8.60 ng/mL. The intra‐ and inter‐assay precisions were less than 15.0% of the relative standard deviation. This method was further used for analysis of serum samples from C57B/L tumor‐bearing mice before and after the treatment of fluoxetine. Validation of the assay and its application to the analysis demonstrated that the method was applicable to determine meaningful changes in Cort concentrations in serum samples of the tumor‐bearing mice for the stress status evaluation. Copyright © 2013 John Wiley & Sons, Ltd.
Engineering a recyclable elastin‐like polypeptide capturing scaffold for non‐chromatographic protein purification
Authors: Liu Fang , Chen Wilfred
Published: June 2013

Previously, we reported a non‐chromatographic protein purification method exploiting the highly specific interaction between the dockerin and cohesin domains from Clostridium thermocellum and the reversible aggregation property of elastin‐like polypeptide (ELP) to provide fast and cost‐effective protein purification. However, the bound dockerin‐intein tag cannot be completely dissociated from the ELP‐cohesin capturing scaffold due to the high binding affinity, resulting in a single‐use approach. In order to further reduce the purification cost by recycling the ELP capturing scaffold, a truncated dockerin domain with the calcium‐coordinating function partially impaired was employed. We demonstrated that the truncated dockerin domain was sufficient to function as an effective affinity tag, and the target protein was purified directly from cell extracts in a single binding step followed by intein cleavage. The efficient EDTA‐mediated dissociation of the bound dockerin‐intein tag from the ELP‐cohesin capturing scaffold was realized, and the regenerated ELP capturing scaffold was reused in another purification cycle without any decrease in the purification efficiency. This recyclable non‐chromatographic based affinity method provides an attractive approach for efficient and cost‐effective protein purification. © 2013 American Institute of Chemical Engineers Biotechnol. Prog., 29:968–971, 2013
Planar Chiral Iridium Complexes with the Δ‐TRISPHAT Anion: Toward the First Enantiopure o‐Quinone Methide π‐Complex
Authors: Moussa Jamal , Chamoreau Lise Marie , Amouri Hani
Published: June 2013

We describe the resolution of a planar chiral cationic iridium complex [Cp*Ir(η5‐2‐methyl‐oxodienyl)][OT f] (2) following the counterion strategy, where anion metathesis by Δ‐TRISPHAT generates the two diastereomers (pR, pS)‐[Cp*Ir(η5‐2‐methyl‐oxodienyl)][Δ‐TRISPHAT] (3a, 3a'). Upon fractional crystallization both compounds were separated as confirmed by 1H nuclear magnetic resonance (NMR) and circular dichroism studies recorded in solution. The latter represents the key‐complex precursors for the enantioselective synthesis of metallated o‐quinone methide complexes (4a, 4a'). Chirality 25:449–454, 2013. © 2013 Wiley Periodicals, Inc.
Iron Nanoparticles Supported on Graphene Oxide: A Robust, Magnetically Separable Heterogeneous Catalyst for the Oxidative Cyanation of Tertiary Amines
Authors: Verma Deepak , Verma Sanny , Sinha Anil K. , Jain Suman L.
Published: June 2013

Well‐dispersed iron nanoparticles supported on chemically derived graphene oxide containing uniform distribution of iron nanoparticles (FeNPs) throughout the surface was synthesized and was used as a heterogeneous catalyst for oxidative cyanation of tertiary amines to the corresponding α‐aminonitriles in high to excellent yields using hydrogen peroxide with sodium cyanide in acetic acid. After the reaction the catalyst could easily be separated by the influence of an external magnet and reused for several runs without any significant change in the catalytic activity and without leaching of the metal during the reaction.