Search results for "level"
showing 10 items of 3465 documents
Effects of differential relevance of external stimuli on heart rate under food deprivation
1972
Ss were deprived of food for 24 h, after which heart rate (HR) was recorded with food placed before the Ss and also after they had eaten it. It was predicted, according to Malmo’s interaction hypothesis, that HR in both situations would be higher than at a control level but that the increase after food ingestion would be greater than that found in the presence of visual cues. The results did not wholly support these predictions. Only after eating were significant HR increases found. Possible reasons for the discrepancies between findings in this area were discussed.
The simulation of morphology of dissimilar copper–steel electron beam welds using level set method
2010
Abstract In present work, the simulation of morphology and velocity field in dissimilar electron beam welds formed between the metals with limited solubility is described by the example of copper–stainless steel couple. Finite element software COMSOL Multiphysics 3.5 has been employed due to its flexibility in solving of coupled multiphysical problems. The domination of horizontal flows allows reducing the model to two dimensions. Level set method has been used to determine the position of the interface between immiscible components basing on coupled heat transfer and fluid flow pseudo-stationary solution. The evolution of the shape, fluid flow and mixing pattern in function of operational …
Testing for convergence from the micro-level
2011
Empirical convergence analysis is typically envisaged from a macro aggregate perspective. However, researchers have recently highlighted how investigating convergence at the disaggregate level may yield interesting insights into the convergence debate. In this paper, we suggest an approach that allows exploiting large micro panels to test for convergence. Compared to the traditional convergence analysis, this approach allows obtaining beta- and sigma-like convergence parameters for both the micro and the macro level of interest. We provide a practical example that analyses productivity convergence across firms and provinces using a large sample of Italian firms.
Graph cut-based method for segmenting the left ventricle from MRI or echocardiographic images
2017
International audience; In this paper, we present a fast and interactive graph cut method for 3D segmentation of the endocardial wall of the left ventricle (LV) adapted to work on two of the most widely used modalities: magnetic resonance imaging (MRI) and echocardiography. Our method accounts for the fundamentally different nature of both modalities: 3D echocardiographic images have a low contrast, a poor signal-to-noise ratio and frequent signal drop, while MR images are more detailed but also cluttered and contain highly anisotropic voxels. The main characteristic of our method is to work in a 3D Bezier coordinate system instead of the original Euclidean space. This comes with several ad…
Orchestrating 21st century learning in higher education: A perspective on student voice
2016
For universities to meet the 21st-century learning needs of today's students, it is important they allow students to take an active role in developing pedagogy and sharing their perspective. This paper introduces design-based research aiming to develop a pedagogic approach to support technology-enhanced learning practices at the university level with the focus on teacher orchestration of learning activities and student voice. Drawing from the perspectives of teachers and students who participated in a course focused on learning and 21st-century competencies, four main elements indicating student voice and technology-enhanced pedagogy are presented: increased interaction among university com…
A Playful Experiential Learning System With Educational Robotics
2020
This article reports on two studies that aimed to evaluate the effective impact of educational robotics in learning concepts related to Physics and Geography. The reported studies involved two courses from an upper secondary school and two courses from a lower secondary school. Upper secondary school classes studied topics of motion physics, and lower secondary school classes explored issues related to geography. In each grade, there was an “experimental group” that carried out their study using robotics and cooperative learning and a “control group” that studied the same concepts without robots. Students in both classes were subjected to tests before and after the robotics laboratory, to c…
Coopetition Strategy and Entrepreneurial Opportunities: Advantages from Multilevel Analyses
2018
The study aims to provide a set of insights concerning the benefits associated with applying a multilevel perspective to the investigation of the link between coopetition strategies and entrepreneurial opportunities. We emphasize that a firm capability to recognize, form, and exploit business opportunities is strictly connected to its coopetitive strategy. In order to fully understand the potential of coopetitive strategies, the focus has to be not just on the examination of the single coopetitive relationship, but also on the micro-foundations underlying such strategies: i.e. the role covered by entrepreneurs’ or CEOs’ personal traits, heuristics, and previous experiences. We also suggest …
Pairwise DNA Sequence Alignment Optimization
2015
This chapter presents a parallel implementation of the Smith-Waterman algorithm to accelerate the pairwise alignment of DNA sequences. This algorithm is especially computationally demanding for long DNA sequences. Parallelization approaches are examined in order to deeply explore the inherent parallelism within Intel Xeon Phi coprocessors. This chapter looks at exploiting instruction-level parallelism within 512-bit single instruction multiple data instructions (vectorization) as well as thread-level parallelism over the many cores (multithreading using OpenMP). Between coprocessors, device-level parallelism through the compute power of clusters including Intel Xeon Phi coprocessors using M…
Scales Used to Assess Stress Level and Mental Health During the Covid 19 Pandemic: Systematic Review
2021
At the end of December 2019, the world became aware of the existence of a new virus that was in the city of Wuhan...
Challenges and trends of debt capital raising by SME: experience of the Baltic States
2012
The paper analyses topical issue of debt capital raising by small and medium-sized enterprises in the Baltic States under changing economic conditions. Raise of debt capital is crucial for SME, as financing and its availability is a critical precondition for the survival and development of enterprises. The paper gives an assessment of recent developments in debt capital raising in the Baltic States, identifies the most important challenges and problems, as well as the mistakes made. Based on the analysis made, authors provide solutions for debt capital raising challenges and possible changes in corporate finance of enterprises.