bluuebunny/crossref_metadata_2025_split huggingface dataset:
Identidades, estágio curricular e trabalho docente: Análise discursiva de depoimentos de licenciandas de uma Universidade Federal no Rio Grande do Sul
Authors: De Moura Sandra Regina , Fiss Dóris Maria Luzzardi 
Published: July 2017

Este artigo se propôs a analisar as afetações do estágio curricular obrigatório e seus ecos na formação das identidades docentes sob a perspectiva de seis licenciandas do Curso de Pedagogia (FACED/UFRGS). Trata-se de pesquisa qualitativa desenvolvida no ano de 2014, que se dispôs a ouvir as vozes de licenciandas em período de estágio curricular obrigatório numa escola da rede pública municipal de ensino localizada na cidade de Porto Alegre (Rio Grande do Sul, Brasil) por meio da realização de grupo focal. Para abordar a temática sobre a qual o artigo versa – estágio e identidade profissional, foram discutidas concepções desenvolvidas por Maurice Tardif e Danielle Raymond, António Nóvoa, Selma Garrido Pimenta e Maria Socorro Lima. O corpus analítico foi composto por depoimentos das licenciandas trabalhados na perspectiva da análise do discurso segundo Michel Pêcheux, destacando inclusive contribuições oferecidas por Eni Orlandi. A partir da análise das falas produzidas em decorrência do grupo focal, foram evidenciados alguns efeitos de sentido - docência como trabalho colaborativo, “humana docência”, experiência de autonomia e tempo de mudanças - que referem o estágio curricular obrigatório como espaço de aprendizagem e de reflexão sobre a prática, espaço da práxis, da prática refletida, influenciando na constituição das identidades docentes das licenciandas. Soma-se a isso a percepção de que as seis estagiárias referiram reviramentos em seus modos de se pensarem e se fazerem docentes em função de uma experiência que as tocou como acontecimento justamente por implicar na atualização de memórias discursivas do campo da educação que, se consideradas nos espaços e tempos de formação, podem contribuir haja vista possibilitarem o desenho de caminhos outros que reiteram compromissos assumidos com a escolarização e educação, reconhecendo a relevância de se compreender as condições dinâmicas de constituição da interlocução com o outro como em uma situação de estágio.
Intriguing sets of quadrics in PG(5, q)
Authors: Cossidente Antonio , Pavese Francesco 
Published: July 2017

Abstract
A hemisystem on the Hermitian surface ℋ(3, q
2), q ≥ 7 odd, admitting a subgroup of PΩ-(4, q) of order q
2(q +1) is constructed. Also, a new family of Cameron-Liebler line classes of PG(3, q), q ≥ 5 odd, with parameter (q
2 + 1)/2 is provided.
On the topology of the spaces of curvature constrained plane curves
Authors: Ayala José 
Published: July 2017

Abstract
Plane curves with the same endpoints are homotopic; an analogous claim for plane curves with the same endpoints and bounded curvature still remains open. We find necessary and sufficient conditions for two plane curves with bounded curvature to be deformed into each other by a continuous one-parameter family of curves also having bounded curvature. We conclude that the space of these curves has either one or two connected components, depending on the distance between the endpoints. The classification theorem presented here answers a question raised in 1961 by L. E. Dubins.
A flag representation of projection functions
Authors: Goodey Paul , Hinderer Wolfram , Hug Daniel , Rataj Jan , Weil Wolfgang 
Published: July 2017

Abstract
The kth projection function υk
(K, ·) of a convex body K ⊂ ℝ
d
, d ≥ 3, is a function on the Grassmannian G(d, k) which measures the k-dimensional volume of the projection of K onto members of G(d, k). For k = 1 and k = d − 1, simple formulas for the projection functions exist. In particular, υ

d-1(K, ·) can be written as a spherical integral with respect to the surface area measure of K. Here, we generalize this result and prove two integral representations for υk
(K, ·), k = 1,..., d − 1, over flag manifolds. Whereas the first representation generalizes a result of Ambartzumian (1987), but uses a flag measure which is not continuous in K, the second representation is related to a recent flag formula for mixed volumes by Hug, Rataj and Weil (2013) and depends continuously on K.
Classification of 3-dimensional left-invariant almost paracontact metric structures
Authors: Calvaruso Giovanni , Perrone Antonella 
Published: July 2017

Abstract
We study left-invariant almost paracontact metric structures on arbitrary three-dimensional Lorentzian Lie groups. We obtain a complete classification and description under a natural assumption, which includes relevant classes as normal and almost para-cosymplectic structures, and we investigate geometric properties of these structures.
Silurian stratigraphy of Central Iran – an update
Authors: Hairapetian Vachik , Pour Mansoureh Ghobadi , Popov Leonid E. , Männik Peep , Miller C. Giles 
Published: July 2017

AbstractThe Silurian biostratigraphy, lithostratigraphy, and facies of Central Iran including the Kashmar (Boghu Mountains), Tabas (Derenjal Mountains, Ozbak-Kuh), Anarak (Pol-e Khavand) and Kerman regions is reviewed and updated. The current state of knowledge of the Silurian in the Zagros Basin, Alborz, Kopet-Dagh and Talysh regions, as well as in a few areas scattered across the Sabzevar Zone, and the Sanandaj-Sirjan terranes is also reviewed. Silurian volcanism in various parts of Iran is briefly discussed. The end of the Ordovician coincided with a widespread regression across Iran synchronous with the Hirnantian glaciation, and only in the Zagros Basin is there a continuous Ordovician-Silurian transition represented by graptolitic black shales of the Sarchahan Formation. In the Central-East Iranian Platform marine sedimentation re-commenced in the early to mid Aeronian. By the Sheinwoodian, carbonate platform depositional environments were established along its north-eastern margin. In other parts of Iran (e.g., Kopet-Dagh and the Sabzevar Zone), siliciclastic sedimentation continued probably into the late Silurian. The Silurian conodont and brachiopod biostratigraphy of Central Iran is significantly updated facilitating a precise correlation with the Standard Global Chronostratigraphic Scale, as well as with key Silurian sections in other parts of Iran. The Silurian lithostratigraphy is considerably revised and two new lithostratigraphical units, namely the Boghu and Dahaneh-Kalut formations, are introduced.
The Numerical and Experimental Analysis of Ballizing Process of Steel Tubes
Authors: Dyl T. 
Published: July 2017

Abstract
This paper presents chosen results of experimental and numerical research of ballizing process of the steel tubes. Ballizing process is a method of burnishing technology of an internal diameter by precisely forcing a ball through a slightly undersized pre-machined tubes. Ballizing process is a fast, low-cost process for sizing and finishing tubes. It consists of pressing a slightly oversized ball through an unfinished tube to quickly bring the hole to desired size. The ball is typically made from a very hard material such as tungsten carbide or bearing steel. Ballizing process is by cold surface plastic forming of the surface structure, thereby leaving a layer of harder material and reducing its roughness. After theoretical and experimental analysis it was determined that the smaller the diameter of the balls, the bigger intensity of stress and strain and strain rate. The paper presents influence of ballizing process on the strain and stress state and on the surface roughness reduction rate of the steel tubes.
An Analysis of the Quality of the Thick-Walled S355J2+N Steel Joint Welded by the Mag Method
Authors: Krawczyk R. 
Published: July 2017

AbstractAn analysis of the quality of the thick-walled S355J2+N steel welded joint used most frequently in the general-building, power and other contemporary steel constructions is presented in the following article. A process of examining welding technologies was made on the tick-walled butt joints of plates by using the MAG – 135 welding method. The aim of the discussed topic was to optimize the process of welding thick-walled welded joints due to their mechanical strength properties and efficiency.
Effect of Laser Preheating AISI 4140 Specimens for Micro-Forging
Authors: Jung C. , Lee M.G. , Jeon Y. 
Published: July 2017

Abstract
Many high performance and permanent service parts require suitable material characteristics-high fatigue strength is one of the most important characteristics. For this reason, surface treatment processes are essential to increase the material performance and avoid the use of costly ineffective material. There exist various surface treatment processes for various applications. Each process has advantages and disadvantages and hybridization can solve various problems. The micro-forging process delivers a controlled and uniform surface hardness, but the depth of the forged surface is limited. On the other hand, laser heat treatment can increase the hardness drastically, but the surface may become brittle, which reduces the fatigue life. Laser-assisted micro-forging is a novel hybrid process of laser heat treatment and micro-forging that has the potential to increase the forging depth and relax the stress caused by the high temperature of the forging process.
This study examines the effect of laser preheating in the micro-forging of AISI 4140. The processes were varied as follows: no treatment, micro-forging only, and laser-assisted micro-forging. The fatigue strength of the specimens was examined by means of an ultrasonic fatigue tester and then compared. The microstructural changes were investigated with respect to the processes by using scanning electron microscopy. In conclusion, it was confirmed that the laser preheating auxiliary forging affects the fatigue life. It was confirmed that the fatigue life was the mostly increased in 550°C temperature laser preheating micro forging process and the temperature was identified as the most important factor.
Mobilität und Leistung
Authors: Nies Sarah , Roller Katrin , Vogl Gerlinde 
Published: July 2017

ZusammenfassungJenseits genuin mobiler Berufe steht die Verbreitung von Dienstreisen symptomatisch für gewachsene Mobilitätsanforderungen in der Arbeit. Belastungen durch Dienstreisen werden dabei bislang überwiegend als Vereinbarkeitsproblem zwischen Arbeit und Familie und als mentale und körperliche Belastung durch die Reisetätigkeit selbst thematisiert. Auf Basis einer qualitativen Untersuchung diskutiert der Beitrag Mobilitätserleben, Belastungen und Bewältigungsstrategien auf unterschiedlichen raum-zeitlichen Ebenen und setzt diese mit ergebnisorientierten Formen der Leistungssteuerung in den Unternehmen in Bezug. Die empirischen Ergebnisse verdeutlichen, dass Dienstreisende nicht nur vor der Aufgabe stehen, arbeitsbedingte Mobilität mit dem Privatleben zu vereinbaren, sondern dass die mobilitätsbedingten Abwesenheiten auch zu Vereinbarkeitskonflikteninnerhalbder Arbeit - zwischen Mobilitätserfordernissen und den Anforderungen an der regulären Arbeitsstätte führen. Private Zeit wird dabei zur „Verhandlungsmasse“ von Bewältigungsstrategien und Entgrenzung zu einer Ressource, um arbeitsbedingte Konflikte zu bewältigen.
Innerbetriebliche Aushandlungen der Reorganisation sozialer Dienstleistungsarbeit
Authors: Kerber-Clasen Stefan 
Published: July 2017

Zusammenfassung
Seit Mitte der 2000er Jahre wird der Kindertagesstätten-bereich in Deutschland reformiert, wodurch ein Reorganisationsdruck auf Kitas ausgeübt wird. Daraus resultierende Reorganisationsprozesse werden am Beispiel einer Betriebsfallstudie einer saarländischen Kita nachgezeichnet und analysiert. Der Schwerpunkt liegt auf folgenden beiden Fragen: Wie wirken sich die Reformen im Kita-Bereich auf den Alltag in der Kita aus? Wie handeln die pädagogischen Fachkräfte im Arbeitsprozess die Reorganisation aus? Auf diese Weise werden Erkenntnisse zu bisher kaum untersuchten Aspekten des Reformprozesses im Kita-Bereich gewonnen, die das wissenschaftlich und öffentlich gezeichnete Bild der Veränderungen im Kita-Bereich arbeitssoziologisch differenzieren. Die Studie plädiert zugleich dafür, gegenwärtige Reorganisationsprozesse in sozialen Dienstleistungen als Aushandlungsprozesse zu analysieren.
Erwerbsarbeitsbezogenes Diversity Management
Authors: Peinl Iris , Janke Daniela 
Published: July 2017

Zusammenfassung
Diversity Management wird aufgrund unternehmensbezogener Gewinnfriktionen aus der Perspektive der Betriebswirtschaftslehre wichtiger. Unternehmen sprechen für die Sicherung ihres Fachkräftebedarfs vermehrt differente Menschen an und versuchen, diese in den Arbeitsprozess zu integrieren. Diese Notwendigkeit eines Diversity Managements erhöht den Bedarf an interdisziplinärer Forschung und abgeleiteten Handlungsansätzen. Dieser Beitrag beschreibt Diversity und Diversity Management unter einer betriebswirtschaftlichen und konstruktivistischen Perspektive, um auf dieser Grundlage den eigenen, auf erfolgreiche Arbeitsintegration differenter Menschen zielenden Ansatz des erwerbsbezogenen Diversity Managements zu entfalten.
Digitalisierungsprozesse und das Handeln von Betriebsräten
Authors: Georg Arno , Katenkamp Olaf , Guhlemann Kerstin 
Published: July 2017

Zusammenfassung
In der digitalen Transformation sind Fragen nach der Rolle der Beschäftigten und ihrer Interessenvertretungen für die Gestaltung der „Arbeit 4.0“ zentral. Welche Möglichkeiten und Gefahren den vernetzten, digitalen Prozessen innewohnen und wie unter diesen Voraussetzungen vorausschauende, gesundheitsförderliche und mitbestimmte Arbeitsgestaltung gelingen kann, ist auch vom Handeln der Interessenvertretungen abhängig. In vielen Betrieben dominieren auf dem Weg in die smarte Produktion jedoch noch Unsicherheiten über die konkreten Auswirkungen der neuen Technologien auf die Menschen und die Ausgestaltung der Mitbestimmung zwischen Schutz und Gestaltung. In den vorgestellten empirischen Ergebnissen aus zwölf Unternehmen zum Betriebsratshandeln zeigen sich unterschiedliche Herangehensweisen an die digitale Transformation, die in einer Typologie dargestellt werden.
How Increasing Supplier Search Cost Can Increase Welfare
Authors: Li Zhiwen , Arnold Michael , Penard Thierry 
Published: July 2017

AbstractReductions in search costs are generally found to increase efficiency and welfare. Using a simple search model we show that when an upstream firm incurs a search cost to identify a potential trading partner and the two parties then negotiate the wholesale price, a reduction in search cost can actually reduce welfare. Furthermore, in a market driven by seller search, a search cost of zero is never socially optimal.
Pre-contest Communication Incentives
Authors: Yildirim Mustafa 
Published: July 2017

AbstractTo demonstrate resolution and psychological strength, players often engage in pre-contest communication by publicly stating their desire to win an upcoming contest. Existing explanations for this phenomenon revolve around incomplete information and signaling. In this paper, I offer a complementary explanation that does not rely on signaling. Within a complete information setup, I show that players may have an incentive for pre-contest communication if, in addition to an audience (reputational) cost when the statement does not materialize, the players also incur an audience reward (credibility gain) when the statement materializes.
Meaningful Work, Worthwhile Life, and Self-Respect: Reexamination of the Rawlsian Perspective on Basic Income in a Property-Owning Democracy
Authors: Fukuma Satoshi 
Published: July 2017

Abstract
As is well known, John Rawls opposes the idea and policy of basic income. However, this paper posits that his view of self-respect and activity could accommodate its implementation. Rawls lists the social basis of self-respect in social primary goods as the most important good, but does not assume that it is derived from wage labor alone. It appears that his theory of justice aims to criticize the work-centered (wage-labor) society and to overcome it. Besides, as Rawls desires, for our work to be meaningful and our life worthwhile, we should institutionalize basic income because it can improve workers’ bargaining power and their attitude toward work, in addition to enhancing their leisure time. In this paper, by considering the normative relationship between meaningful work, worthwhile life, and self-respect from a Rawlsian perspective, I inquire into the potential of basic income in his well-ordered society.
Fused multivariate empirical mode decomposition (MEMD) and inverse solution method for EEG source localization
Authors: Khosropanah Pegah , Ramli Abdul Rahman , Lim Kheng Seang , Marhaban Mohammad Hamiruce , Ahmedov Anvarjon 
Published: July 2017

Abstract
EEG source localization is determining possible cortical sources of brain activities with scalp EEG. Generally, every step of the data processing sequence affects the accuracy of EEG source localization. In this paper, we introduce a fused multivariate empirical mode decomposing (MEMD) and inverse solution algorithm with an embedded unsupervised eye blink remover in order to localize the epileptogenic zone accurately. For this purpose, we constructed realistic forward models using MRI and boundary element method (BEM) for each patient to obtain results that are more realistic. We also developed an unsupervised algorithm utilizing a wavelet method to remove eye blink artifacts. Additionally, we applied MEMD, which is one of the recent and suitable feature extraction methods for non-linear, non-stationary, and multivariate signals such as EEG, to extract the signal of interest. We examined the localization results using the two most reliable linear distributed inverse methods in the literature: weighted minimum norm estimation (wMN) and standardized low resolution tomography (sLORETA). Results affirm the success of the proposed algorithm with the highest agreement compared to MRI reference by a specialist. Fusion of MEMD and sLORETA results in approximately zero localization error in terms of spatial difference with the validated MRI reference. High accuracy results of proposed algorithm using non-invasive and low-resolution EEG provide the potential of using this work for pre-surgical evaluation towards epileptogenic zone localization in clinics.
OpenICE medical device interoperability platform overview and requirement analysis
Authors: Arney David , Plourde Jeffrey , Goldman Julian M. 
Published: July 2017

AbstractWe give an overview of OpenICE, an open source implementation of the ASTM standard F2761 for the Integrated Clinical Environment (ICE) that leverages medical device interoperability, together with an analysis of the clinical and non-functional requirements and community process that inspired its design.
Contributions on the Determination of the Relationship among Globalization, Sustainable Development and Energy Security
Authors: Neag Mihai-Marcel , Halmaghi Elisabeta-Emilia , Cucuiet Mâţu Petruţa 
Published: July 2017

Abstract
The integrated approach to current security issues requires the study of human society by adopting the principle of sustainability for policies to be developed and applied according to economic, social and environmental impacts. The internationalization of economies raises a number of requirements for the application of this principle not only in domestic policies but also in external cooperation relations. Sustainability is thus a catalyst for internal and external political decisions, economic actions and public opinion to promote both new structural, institutional reforms and changes in production and consumption behaviours. The energy resources have permanently and overwhelmingly influenced the evolution of human society and its economic development, representing both a reason for cooperation and confrontation and disputes among the actors of the international system, while also shaping the economy, security, foreign policy and states priorities.
Effect of interfacial film on the corrosion behaviour of X80 pipeline steel in a neutral soil environment containing sulphate-reducing bacteria
Authors: Wang Dan , Xie Fei , Li Xue , Wang Xingfa , Liu Jiaqi , Wu Ming 
Published: July 2017

AbstractX80 pipeline steel is inevitably corroded by sulphate-reducing bacteria (SRB) in soil. Corrosion-induced damage to the pipeline steel could result in serious consequences. Studies have shown the critical role of interfacial film in SRB-induced corrosion. However, the specific effect of interfacial film was not examined. The effect of film on the corrosion of X80 steel in neutral soil environment was determined using scanning electron microscopy, energy-dispersive spectroscopy, and electrochemical impedance spectroscopy. The structure and electrochemical characteristics of the surface film of X80 steel were examined in the presence of SRB in Shenyang soil. The results showed that, at the beginning of immersion (14 h), the steel surface mainly adsorbed the SRB biofilm, and the biofilm slowed down the corrosion reaction. A small amount of the biofilm and corrosion product film was observed on the electrode surface after immersion for 14–48 h. The corrosion product film destroyed the protection of the biofilm, increasing corrosion. After immersion for 48 h, the corrosion product contents and polarisation resistance increased. After immersion for 240 h, a dense corrosion product film formed on the sample surface, showing the least corrosion. The protective effect of corrosion products on X80 steel was much greater than that of the biofilm.
Modeling galvanic coupling and localized damage initiation in airframe structures
Authors: Nickerson William C. , Iyyer Nagaraja , Legg Keith , Amiri Mehdi 
Published: July 2017

AbstractTraditionally, airframe structures are designed for immediate mechanical performance and loads-only structural response; the lifetime of aircraft structures is predicted on these analyses and environmental degradation of properties over the life cycle and during operations is often an afterthought. Although the maintenance of aircraft structures is primarily determined by material degradation, galvanic management of airframe designs and corrosion-resistant material selection have never been done systematically. From end-of-life tear-down inspections, we know that, predominantly, structural failures are initiated from corrosion features, especially those accelerated by dissimilar material coupling. In its most simplistic form, this environmental exposure, “loading”, creates corrosion features, such as pitting, that produce crack initiation morphologies; cracks nucleate from these features and then grow under the combined influence of mechanical stress and corrosion, eventually leading to structural failure. There is clearly a strong correlation between corrosion and structural damage, which we think of as corrosion fatigue and stress corrosion cracking. Office of Naval Research’s Sea-Based Aviation program is developing computational approaches to corrosion activity prediction, crack initiation and crack growth, with the ultimate aim of predicting service life in terms of the combination of mechanical and chemical stress. This approach is intended to be the basis for design of durable aircraft structures, using design principles that will take into account both stress and corrosion in the design phase, rather than designing for stress and then maintaining for corrosion.