Search results for "roe"
showing 10 items of 9822 documents
Exploiting ongoing EEG with multilinear partial least squares during free-listening to music
2016
During real-world experiences, determining the stimulus-relevant brain activity is excitingly attractive and is very challenging, particularly in electroencephalography. Here, spectrograms of ongoing electroencephalogram (EEG) of one participant constructed a third-order tensor with three factors of time, frequency and space; and the stimulus data consisting of acoustical features derived from the naturalistic and continuous music formulated a matrix with two factors of time and the number of features. Thus, the multilinear partial least squares (PLS) conforming to the canonical polyadic (CP) model was performed on the tensor and the matrix for decomposing the ongoing EEG. Consequently, we …
Determining the number of sources in high-density EEG recordings of event-related potentials by model order selection
2011
To high-density electroencephalography (EEG) recordings, determining the number of sources to separate the signal and the noise subspace is very important. A mostly used criterion is that percentage of variance of raw data explained by the selected principal components composing the signal space should be over 90%. Recently, a model order selection method named as GAP has been proposed. We investigated the two methods by performing independent component analysis (ICA) on the estimated signal subspace, assuming the number of selected principal components composing the signal subspace is equal to the number of sources of brain activities. Through examining wavelet-filtered EEG recordings (128…
Does innovativeness reduce startup survival rates?
2015
There are two competing hypotheses explaining how innovativeness influences the survival of startups: On the one hand, innovativeness is argued to foster survival-enhancing attributes (e.g., market power and cost efficiency) and capabilities (e.g., absorptive capacity). On the other hand, an innovative startup faces (and bears the associated risks of) liabilities of newness and smallness that exceed those of its non-innovative counterparts. The available empirical literature addressing this theoretical tension mostly supports the former hypothesis; we suggest that this finding is, in part, driven by the common practice of employing an ex post measure that already embodies a degree of succes…
Government policy failure in public support for research and development
2014
peer-reviewed Promoting Research and Development (R&D) and innovative activity is a key element of the EU Lisbon Agenda and is seen as playing a central part in stimulating economic development. In this paper we argue that, even allowing for benevolent policy-makers, informational asymmetries can lead to a misallocation of public support for R&D, hence government policy failure, with the potential to exacerbate preexisting market failures. Initially, we explore alternative allocation mechanisms for public support, which can help to minimize the scale of these government policy failures. Of these mechanisms (grants, tax credits, or allocation rules based on past performance), our results sug…
Harnessing Women’s Potential as a Soft Engine for Growth : Lessons from Contrasting Trajectories between Finland and Japan for Growing Economies
2017
Harnessing the vigor of women’s potential is essential for inclusive economic growth in a digital economy moving toward aging society. This can be a soft engine for sustainable growth substitutable for costly hard investment. While there exists explicit evidence of a virtual cycle between economic growth and gender balance improvement, emerging countries cannot afford to overcome the constraints of low income. Given the foregoing, this paper analyzed possible co-evolution between economic growth, gender balance improvement and digital innovation initiated by information and communication technology (ICT) advancement. Using a unique dataset representing the state of gender balance improvemen…
Impacto clínico de la telemedicina en la enfermedad de Crohn y colitis ulcerosa
2021
Introducción: Los datos de eficacia de la telemedicina en enfermedad inflamatoria intestinal (EII) no son consistentes. Se desconoce su impacto en el manejo de la EII moderada-grave. Además, no existe evidencia sobre el perfil de coste-efectividad de la telemonitorización en este contexto. Objetivos: Evaluar el impacto de la monitorización remota vía web (Telemonitorización de la Enfermedad de Crohn y Colitis Ulcerosa: TECCU) sobre las variables de salud y su perfil de coste-efectividad en pacientes con EII moderada-grave, comparado con el seguimiento presencial y el telefónico. Material y Métodos: Ensayo clínico aleatorizado con 3 grupos. Se incluyeron consecutivamente pacientes adultos de…
Deriving electrophysiological brain network connectivity via tensor component analysis during freely listening to music
2020
Recent studies show that the dynamics of electrophysiological functional connectivity is attracting more and more interest since it is considered as a better representation of functional brain networks than static network analysis. It is believed that the dynamic electrophysiological brain networks with specific frequency modes, transiently form and dissolve to support ongoing cognitive function during continuous task performance. Here, we propose a novel method based on tensor component analysis (TCA), to characterize the spatial, temporal, and spectral signatures of dynamic electrophysiological brain networks in electroencephalography (EEG) data recorded during free music-listening. A thr…
Intravenous iron therapy in patients with heart failure. A double-edged sword
2013
We read with interest the article of Beck-da-Silva et al., who recently concluded that intravenous (IV) iron seems to be superior over oral supplementation for improving functional capacity of heart failure patients [1]. Irrespective of the study design, involving comparison of functional outcomes between two different means of iron supplementation, we raise some clinical issues about the rationale underlying this investigation. According to the data published by Beck-da-Silva et al., the modest number of patients (n = 23) enrolled in this multicenter investigation had moderate anemia (i.e., hemoglobin concentration comprised between 90 and 120 g/L) but no evidence of iron deficiency, which…
Makroekonomisko faktoru nozīme nekustamā īpašuma tirgus attīstībā
2015
Maģistra darbā „Makroekonomisko faktoru nozīme nekustamā īpašuma tirgus attīstībā” tiek izpētīta nekustamā īpašuma tirgus nozīme valsts ekonomikas attīstības procesā pamatojoties uz makroekonomisko faktoru ietekmi uz Rīgas sērijveida mājokļu tirgu. Darba autore izvirza šādu hipotēzi: mājsaimniecībām izsniegto ilgtermiņa aizdevumu procentu likmes mājokļa iegādei ir Rīgas mājokļu cenas visvairāk ietekmējošais makroekonomiskais faktors. Pētījuma mērķis – pamatojoties uz zinātniskās literatūras un statistisko datu analīzi, atlasīt Rīgas mājokļa tirgus visvairāk ietekmējošos makroekonomiskos faktorus, izdarīt secinājumus un sniegt priekšlikumus Latvijas nekustamā īpašuma tirgus stabilitātes nodr…
Makroekonomikas vides ietekme uz tautsaimniecības nozaru sistemātisko risku
2021
Pasaulē vērojamas krasas sistemātiskā riska atšķirības starp dažādām tautsaimniecības nozarēm dažādās valstīs, un tas rada jautājumus par šo atšķirību cēloņiem. Par pamatu atšķirībām tiek minēta makroekonomiskās vides ietekme un notikumi tautsaimniecībā, kas atspoguļojas ar pārmaiņām aktīvu tirgos. Taču neviennozīmīgi tiek skaidrots, vai atšķiras tautsaimniecības nozaru jutīgums, vai atšķirīga ir makroekonomikas faktoru ietekme dažādos pasaules aktīvu tirgos. Maģistra darba mērķis ir novērtēt makroekonomikas faktoru ietekmi uz nozaru jūtīgumu pret tautsaimniecības mēroga akciju tirgus tendencēm, salīdzināt rezultātus lielākajos pasaules aktīvu tirgos, kā arī skaidrot makroekonomikas faktoru…