Search results for "construct"
showing 10 items of 3723 documents
Proceedings of the first international summit on intestinal anastomotic leak, Chicago, Illinois, October 4-5, 2012
2014
Item does not contain fulltext OBJECTIVE: The first international summit on anastomotic leak was held in Chicago in October, 2012 to assess current knowledge in the field and develop novel lines of inquiry. The following report is a summary of the proceedings with commentaries and future prospects for clinical trials and laboratory investigations. BACKGROUND: Anastomotic leakage remains a devastating problem for the patient, and a continuing challenge to the surgeon operating on high-risk areas of the gastrointestinal tract such as the esophagus and rectum. Despite the traditional wisdom that anastomotic leak is because of technique, evidence to support this is weak-to-non-existent. Outcome…
Editorial: Calculation of Passenger Car Equivalents at Roundabouts
2021
Editorial on the Research Topic: Calculation of Passenger Car Equivalents at Roundabouts About this Research Topic: Calculation of Passenger Car Equivalents (PCEs) for heavy vehicles represents the starting point for the operational analysis of road facilities and other traffic management applications. PCEs are used to consider the presence of heavy vehicles in the traffic stream and are expressed as multiples of the effect of an average passenger car. Moreover, the highly curvilinear nature of the roundabout design, both in urban and rural environment, has significant effects on the paths that heavy vehicles would travel; as a consequence, the interaction between the physical and performan…
Migration Discourse and the New Socially Constructed Meanings of the English Lingua Franca
2022
After the 1990s, the mass arrival of immigrants in Europe transformed the phenomenon of migration from a benefit into a problem and opened the debate to issues of first aid, security, expulsion and rejection. Even today, migrants are no longer seen as a socio-economic resource to be protected and regulated, but as a potential social problem affecting areas such as the economy, health and national security. The paper deals with the linguistically relevant literature about migration discourse (MD) and the role of English as lingua franca in public discourse related to the migration phenomenon. The latter part examines some traditional English key terms used to represent migrants since their m…
Hybrid DFT calculations of the atomic and electronic structure for ABO3 perovskite (001) surfaces
2005
Abstract We present the results of first-principles calculations on two possible terminations of the (0 0 1) surfaces of SrTiO3, BaTiO3, and PbTiO3 perovskite crystals. Atomic structure and the electronic configurations were calculated for different 2D slabs, both stoichiometric and non-stoichiometric, using hybrid (B3PW) exchange-correlation technique and re-optimized basis sets of atomic (Gaussian) orbitals. Results are compared with previous calculations and available experimental data. The electronic density distribution near the surface and covalency effects are discussed in details for all three perovskites. Both SrTiO3 and BaTiO3 (0 0 1) surfaces demonstrate reduction of the optical …
Polarization stereoscopic imaging prototype
2011
The polarization of light was introduced last ten years ago in the field of imaging system is a physical phenomenon that can be controlled for the purposes of the vision system. As that found in the human eyes, in general the imaging sensors are not under construction which is sensitive to the polarization of light. These properties can be measured by adding optical components on a conventional camera. The purpose of this thesis is to develop an imaging system that is sensitive both to the stereoscopic and to the state of polarization. As well as the visual system on a various of insects in nature such as bees, that are have capability to move in space by extracted relevant information from…
Assessing first-year engineering students' pre-university mathematics knowledge: preliminary validity results based on an item response theory model
2020
The importance of students’ prior knowledge to their current learning outcomes cannot be overemphasised. Students with adequate prior knowledge are better prepared for the current learning materials than those without the knowledge. However, assessment of engineering students' prior mathematics knowledge has been beset with a lack of uniformity in measuring instruments and inadequate validity studies. This study attempts to provide evidence of validity and reliability of a Norwegian national test of prior mathematics knowledge using an explanatory sequential mixed-methods approach. This approach involves use of an item response theory model followed by cognitive interviews of some students …
LEARNING TOGETHER EVERYWHERE ANYTIME. MOBILE LEARNING IN HIGHER EDUCATION
2015
Today, the use of mobile learning in higher education can be widespread only if teachers and students are able to understand their possibilities and applications in the right way. The present research aims to analyse types of possessed mobile devices, competences in their use and successful applications in higher education courses. A specific questionnaire has been created and divided into four areas: 1) general personal information, 2) possessed and frequently used mobile devices, 3) awareness of the mobile device potential in distance learning, 4) their advantages in free and informal learning environments). The questionnaire, previously validated, was submitted on-line to a large group o…
Conclusions: Cultural Literacy in Action
2021
AbstractIn this chapter, the authors emphasize how even very young children can deal with complex and abstract ideas and emotions through creative practices and how the differences between people are not an issue for children. The analysis indicates that children have a multifaceted capacity for empathy. The authors stress that image-making is an important mode of communication through which children and young people shape their understanding of the world. This is a constructive and dialogic process of thinking in action. It allows children and young people to develop their imagination, emotional responses, personality, and position in the community, in relationship with others, and with th…
A Review of Recent Advances in Ear Recognition
2011
Ear recognition has become a rapidly growing research area in recent years. This paper gives an up-to-date review of research works in ear recognition based on 3D data and 2D ear images. For ear recognition in 3D, recent works on 3D feature extraction and model matching are presented and discussed. For 3D ear recognition based on 2D images, 3D ear model reconstruction is mainly discussed. For ear recognition in 2D, main research works on ear detection, ear feature extraction and classification are presented and discussed. Some possible future research interests are proposed in the end.
Avoiding tunnel collisions between fibular collateral ligament and ACL posterolateral bundle reconstruction
2010
PURPOSE: The purpose of this study was to evaluate the risk of tunnel collisions of the fibular collateral ligament (FCL) and posterolateral bundle anterior cruciate ligament (PLB-ACL) tunnels during a combined FCL and double-dundle (DB) ACL reconstruction. METHODS: Thirty-six 4th-generation synthetic femurs (Sawbones, Pacific Research Laboratories, Vashon, WA) were utilized, and two different femur sizes were used. A FCL tunnel and a PLB-ACL tunnel were reamed on each femur. The tunnels of synthetic specimens that did not have a collision were filled with an epoxy resin augmented with BaSO(4) and radiographic evaluation, and Multidetector CT exams of the specimens were performed. RESULTS: …