Search results for "TF"
showing 10 items of 1652 documents
Narrowing the window of inflationary magnetogenesis
2017
We consider inflationary magnetogenesis where the conformal symmetry is broken by the term $f^2(\phi) F_{\alpha\beta} F^{\alpha\beta}$. We assume that the magnetic field power spectrum today between 0.1 and $10^4$ Mpc is a power law, with upper and lower limits from observation. This fixes $f$ to be close to a power law in conformal time in the window during inflation when the modes observed today are generated. In contrast to previous work, we do not make any assumptions about the form of $f$ outside these scales. We cover all possible reheating histories, described by an average equation of state $-1/3 <\bar{w} <1$. Requiring that strong coupling and large backreaction are avoided both at…
Constraints on Cosmic Strings Using Data from the Third Advanced LIGO–Virgo Observing Run
2021
We search for gravitational-wave signals produced by cosmic strings in the Advanced LIGO and Virgo full O3 data set. Search results are presented for gravitational waves produced by cosmic string loop features such as cusps, kinks and, for the first time, kink-kink collisions.cA template-based search for short-duration transient signals does not yield a detection. We also use the stochastic gravitational-wave background energy density upper limits derived from the O3 data to constrain the cosmic string tension, $G\mu$, as a function of the number of kinks, or the number of cusps, for two cosmic string loop distribution models.cAdditionally, we develop and test a third model which interpolat…
Phenotyping plant root and their interaction with soil micro-organisms
2014
International audience
Languages and New Technologies: Learning Digital Portfolio in the Stylistics of English
2016
The new perspective of the European Higher Education Area involves new methodologies which foster the information and communication technologies (ICTs). Educating (i.e. teaching and learning) by means of the European Credits Transfer System (ECTS) produced some very significant changes in issues such as “permanent learning and active learning” (Barragan 2009: 2) and ‘learning by means of (professional) competences’ which entail new learning methodologies and new evaluation processes.
Prolonged breastfeeding is associated with greater bone size and bone strength
2011
Minimal Dynamic Equilibria
2018
We define dynamic models as multiperiod models with no static representations and demonstrate that current prevalent asset pricing empirical implementations are inconsistent with dynamic equilibria. Specifically, empirical implementations are misspecified with respect to three essential asset pricing questions (TEQ): dependency on higher moments, complexity of risk premia, and mean-variance efficiency of the “market portfolio” (ability to proxy pricing kernels/SDFs). While we already know that “Merton” models, and their derivatives, differ from static models in all TEQ, we show that this is the case even the “minimal” dynamic equilibria.
Intellectual Property and Leverage: The Role of Patent Portfolios
2019
This paper analyses the importance of intellectual property in determining capital structure decisions. We argue that firms can use their patent stock as collateral and thereby relax possible debt financing restrictions. Using data from the European Patent Office and balance sheet data of European companies, we find that larger and more valuable patent stocks lead to higher debt-ratios - controlling for well-established capital structure determinants. We further assess variation across as well as within industries and show that effects are mainly driven by tech-oriented and research intensive firms. Drawing on a legislative change in EU- law, allows us to establish a causal relationship bet…
Work-life balance during the COVID-19 outbreak: the case of Latvia
2020
This paper aims to shed light on work-life balance in Latvia during the state of emergency The COVID-19 outbreak has led many governments to introduce lockdowns While imposed restrictions may help to contain the spread of the virus, they may also result in substantial damage to population well-being The COVID-19 outbreak in Latvia demonstrates the extent and ways in which socio-demographics factors have determined different patterns of behaviour, attitudes, employment changes and harmonised work and life balance The study describes the chronological development of COVID-19 in the country It describes labour migration to and from Latvia before the COVID-19 outbreak It provides geographical f…
Interaction between extrinsic and intrinsic online review cues: perspectives from cue utilization theory
2023
AbstractWe examine the interaction effects of linguistic style and verification of online reviews in terms of their valence on purchase intention for search and experiential products. We adopt the cue utilization framework to examine the interplay between the extrinsic cues of online reviews—content style (general versus specific), verified purchase (VP) badge (present versus absent), and valence (positive versus negative)—in two product categories—search product (tablet) and experiential product (trip package)—using an experimental design. The findings of the frequentist and Bayesian analyses show that valence supersedes other attributes’ impacts on purchase intention in both product categ…
Growing the Otome Game Market: Fan Labor and Otome Game Communities Online
2019
Otome games are a niche category of Japanese games marketed toward women. Outside its country of origin and the infrastructure of the anime media mix, its predominantly female player communities traditionally have defined these games as those that feature romance or dating simulation. In this paper, I look into how fan bloggers talk about their own work in marketing and distributing otome games beyond Japan. In the case of otome game fan blogging, the ability to shape discussions surrounding otome games also relies upon maintaining the image of players as good consumers. Although this work focuses on the practice of fan blogging, it is part of an ongoing study on otome games in English and …