Inflation dynamics, marginal cost, and the output gap: evidence from three countries

Recent studies by Galí and Gertler (1999), Galí, Gertler, and López-Salido (GGL) (2001a, 2001b), and Sbordone (1998, 2001) have argued that the New Keynesian Phillips curve (Calvo pricing model) is empirically valid, provided that real marginal cost rather than detrended output is used as the variable driving inflation. GGL (2001a) conclude that real marginal cost is not closely related to the output gap, and that models for monetary policy therefore need to include labor market rigidities. An alternative interpretation is that marginal cost and the output gap are closely related, but that the latter needs to be measured in a manner consistent with dynamic general equilibrium models. To date, there has been little econometric investigation of this alternative interpretation. This paper provides estimates of the New Keynesian Phillips curve for the United States, the United Kingdom, and Australia using theory-based estimates of the output gap. We find little support for the notion that labor costs explain inflation dynamics better than the output gap, and so conclude that modeling of labor market rigidities is not a high priority in analyzing inflation.

Alien Registration Card- Neiss, Edmund (Portland, Cumberland County)

https://digitalmaine.com/alien_cards/1081/thumbnail.jp

Neuronal recovery after peripheral traumatic lesions of the facial motor nerve

The present work summarizes recent data on the responses in the facial nucleus to experimental lesion on the extratemporal part of the facial nerve. It includes a description of all so far reported reactions to axotomy in motoneurons, microglia and astroglia at cellular and molecular level, together with an attempt for a comprehensible interpretation of their importance. The brief review on the experimental and clinical results of the reinnervation is followed by some original results from our experience to improve neuronal regeneration with peroral administration of the calcium antagonist nimodipine.Biomedical Reviews 1994; 3: 39-53

Das Bindungsverhalten von Kleinkindern während der Medienaneignung: Eine empirische Untersuchung des affektiven Verhaltens von Kleinkindern in einer „Fremden Situation”

Der vorliegende Beitrag beschäftigt sich mit der Frage, ob eine Bindung von Kleinkindern an Medien im Alter von drei Jahren während der Medienaneignung in einer „Fremden Situation“ empirisch beobachtbar ist. Unter anderem wurde der Frage nachgegangen, ob Unterschiede bei Kleinkindern aus Kernfamilien und Multiproblemfamilien auf der affektiven Verhaltensebene festgestellt werden können. Aufgrund der Gegebenheit, dass empirischen Forschungen zur frühen Kindheit bisher nur wenig Beachtung im Forschungsfeld der Mediensozialisation beigemessen wurde, erschien es notwendig, selbst eine Methode zu entwickeln. Diesbezüglich wurde ein qualitatives Datenerhebungsverfahren anhand einer verdeckten, teilnehmenden Beobachtung innerhalb eines strukturierten, experimentellen Settings entwickelt, um das Bindungsverhalten von Kleinkindern zu Medien aus bindungstheoretischer Sicht anhand des unmittelbaren, affektiven Ausdrucks klassifizieren zu können. Mithilfe der vorliegenden Methode konnte gezeigt werden, dass eine Bindung an Medien während der Medienaneignung bei Kleinkindern empirisch beobachtbar ist.This report addresses the question if the attachment of three-year-old infants to media is empirically observable during the appropriation of media in a “strange situation”. One specific questions was whether there are differences in the affective behaviour between infants from core families and infants from multi-problem families. As media socialisation research has so far hardly focused on the empirical research of early childhood, it seemed necessary to develop a new method. For this reason, a qualitative data collection procedure was developed based on a covert participant observation within a structured, experimental setting, in order to classify the media attachment behaviour of infants from an attachment theory point of view based on the children’s immediate affective expression. By this method it could be demonstrated that an attachment to media during the infants’ media appropriation is empirically observable

Análise de portfólios otimizados com modelo de markowitz no mercado brasileiro de ações

TCC(graduação) - Universidade Federal de Santa Catarina. Campus Joinville. Bacharelado Interdisciplinar em Mobilidade.Neste trabalho apresenta-se a análise e avaliação da estratégia de investimento de Markowitz na bolsa de valores oficial do Brasil (B³). A estratégia de Markowitz foi adaptada ao contexto brasileiro e aplicada em dados financeiros históricos de empresas com ações listadas na B³ no período de 01 de janeiro de 2013 a 06 de dezembro de 2017. Elencou-se dois cenários diferentes: 1º. Cento e setenta e sete empresas que compõem ininterruptamente a B³ no período de estudo; 2º. Dez ações com maior retorno em cada janela temporal das cento e setenta e sete empresas que compõem ininterruptamente a B³ no período de estudo. Esses cenários foram expostos a diferentes janelas temporais no período de 01 de janeiro de 2013 a 06 de dezembro de 2017 e constatou-se que a janela temporal de doze meses apresenta o melhor desempenho em ambas as situações. A rentabilidade real, respectivamente, é de 89,42% e 188,03%. A bolsa de valores oficial do Brasil, no mesmo período, teve retorno real de -19,85%. Os resultados encontrados demonstraram que a estratégia de investimento de Markowitz apresenta um melhor desempenho com a limitação do portfólio aos dez ativos mais rentáveis de cada janela temporal, apesar de isso também implicar em um aumento significativo da variância

Competition for Graphene: Graphynes with Direction-Dependent Dirac Cones

The existence of Dirac cones in the band structure of two-dimensional materials accompanied by unprecedented electronic properties is considered to be a unique feature of graphene related to its hexagonal symmetry. Here, we present other two-dimensional carbon materials, graphynes, that also possess Dirac cones according to first-principles electronic structure calculations. One of these materials, 6,6,12-graphyne, does not have hexagonal symmetry and features two self-doped nonequivalent distorted Dirac cones suggesting electronic properties even more amazing than that of graphene

Modélisation et simulation de la dispersion turbulente et du dépôt de gouttes dans un canal horizontal

Droplets dispersion and deposition in turbulent duct flows are important processes, occurring in numerous environmental and industrial applications. This work is devoted to the study of gas-droplets flows and, more particularly, the objective is to improve the droplets deposition modeling in horizontal flows. Droplets are supposed to be smaller than the Kolmogorov scale, with a density large compared to the density of the gas phase. Under these assumptions, the motion of a droplet is considered to be governed by the drag force, the buoyancy force, and the gravity. Dilute incompressible and isothermal gas-droplets flows are studied, so inter-particle collisions are neglected but two-way coupling is retained, which means that modulation of turbulence by the particles is accounted for. In horizontal flow, droplets reach the wall under the actions of the gravitational settling and the turbulent diffusion. Two approaches will be used in developing this deposition physics with a first study at the 3D local scale and a second one at the 1D scale, realized for an industrial need. For each case, a model is developed for the mean deposition velocity of the droplets, with is implemented in a numerical simulation tool and then validated by comparison to experimental data. The local deposition model is established under the assumptions that the liquid film is extremely thin and perfectly absorbing and is implemented in the Neptune_CFD code. The experience carried out by Namie & Ueda, which consist in small droplets deposition from a turbulent dispersed flow in a horizontal rectangular duct, is simulated. An analysis of the interphase transfer terms in the kinetic energy equations shows the interactions between the dispersed phase and the continuous one and the impact of these phenomena on the turbulence of the gas phase is pointed out. The 1D deposition model is developed for the CATHARE-3 code and experimental data from the REGARD facility of the CEA Grenoble are used for validation.Ce travail de thèse est consacré à l'étude des écoulements diphasiques dispersés turbulents gaz/gouttes et plus particulièrement à la modélisation du phénomène de dépôt de gouttes en canal horizontal, dont la compréhension et la prédiction sont essentielles pour de nombreuses applications industrielles. Les gouttes sont supposées de taille plus petite que les échelles de longueur caractéristiques de l'écoulement de gaz turbulent, avec une masse volumique grande devant celle de la phase continue, les forces qui agissent sur les gouttes se limitent ainsi à la traînée, à la poussée d'Archimède et à la gravité. Le taux de présence de la phase dispersée est suffisamment important pour tenir compte de l'influence des gouttes sur la turbulence du gaz (couplage à deux sens), mais suffisamment faible pour pouvoir négliger les collisions entre les gouttes. En écoulement horizontal, le dépôt des gouttes en paroi est piloté par deux mécanismes principaux qui agissent en parallèle : la gravité et la diffusion turbulente/vol libre. Cette physique du dépôt est déclinée en deux volets, avec une première étude à l'échelle 3D locale et une seconde étude à l'échelle système 1D. Dans chacune de ces approches, un modèle pour la vitesse de dépôt de gouttes en paroi est développé, puis validé par comparaison à des données expérimentales. Le modèle de dépôt local, établi sous l'hypothèse d'un film liquide infiniment mince et absorbant, est implanté dans le code de simulation numérique NEPTUNE_CFD, puis validé par comparaison aux données expérimentales de Namie & Ueda, qui étudient le dépôt des gouttes en canal horizontal. Une analyse des équations de transport des principales grandeurs moyennes de l'écoulement, ainsi que des transferts d'énergies entre phases, est menée afin de mettre en évidence les phénomènes de couplage et leurs influences sur la turbulence de la phase continue. Le modèle unidimensionnel, développé dans le cadre d'un besoin industriel, est implanté dans le code CATHARE-3 et est confronté aux données de l'expérience REGARD du CEA Grenoble