scholarly journals Sonographers and sonologists hold favorable views of the role of three-dimensional ultrasound (3DUS) in obstetrics following a formal lecture on the subject

2001 ◽  
Vol 18 ◽  
pp. F37-F37
Author(s):  
A. D. Hull ◽  
D. H. Pretorius ◽  
R. Newton ◽  
G. James
Author(s):  
Rizwan Shabbir ◽  
Aysha Batool

This chapter aims at presenting a thematic analysis of 64 research articles on religious tourism published from 2009 to 2020 by adopting a systematic literature review method. The results indicate that prominent topics discussed were amplification of concepts, tourist motivations, and experience. The evolution of religious tourism concept through nexus of diverse scholarly terms, related domains, and religious practices needs a comprehensive literary debate to refine the subject. The socio-economic impact of religious tourism also calls for the enrichment of topics on scholarly and practical grounds. Issues such as host and tourist behavior, social interaction, visitor management, marketing components, and the role of media need to be explored for the progression of religious tourism in line with sustainability. The chapter contributes to the literature by proposing a three-dimensional model focusing on the role of media and potential research domains for further exploration.


1963 ◽  
Vol 14 (2) ◽  
pp. 125-142 ◽  
Author(s):  
W. T. Howell

SummaryThe subject of three-dimensional flow in axial compressors and turbomachines has been extensively studied since 1945. This paper gives a means of calculating the approximate three-dimensional flow in an axial compressor by giving expressions for the slope of the velocity profile as a function of the axial co-ordinate. These expressions bring out the rôle of the ratio of stage inlet annulus height to stage length in the three-dimensional flow in these machines. The effect of the three-dimensional flow on the stage temperature rise at mean radius is discussed by introducing a work done factor.


2008 ◽  
Vol 99 (1) ◽  
pp. 96-111 ◽  
Author(s):  
Tamara Tchelidze ◽  
Bernhard J. M. Hess

To investigate the role of noncommutative computations in the oculomotor system, three-dimensional (3D) eye movements were measured in seven healthy subjects using a memory-contingent vestibulooculomotor paradigm. Subjects had to fixate a luminous point target that appeared briefly at an eccentricity of 20° in one of four diagonal directions in otherwise complete darkness. After a fixation period of ∼1 s, the subject was moved through a sequence of two rotations about mutually orthogonal axes in one of two orders (30° yaw followed by 30° pitch and vice versa in upright and 30° yaw followed by 20° roll and vice versa in both upright and supine orientations). We found that the change in ocular torsion induced by consecutive rotations about the yaw and the pitch axis depended on the order of rotations as predicted by 3D rotation kinematics. Similarly, after rotations about the yaw and roll axis, torsion depended on the order of rotations but now due to the change in final head orientation relative to gravity. Quantitative analyses of these ocular responses revealed that the rotational vestibuloocular reflexes (VORs) in far vision closely matched the predictions of 3D rotation kinematics. We conclude that the brain uses an optimal VOR strategy with the restriction of a reduced torsional position gain. This restriction implies a limited oculomotor range in torsion and systematic tilts of the angular eye velocity as a function of gaze direction.


1950 ◽  
Vol 2 ◽  
pp. 100-119 ◽  
Author(s):  
Walter Prenowitz

1. Introduction. The notion spherical geometry is suggested by the familiar geometry of the Euclidean 2-sphere in which the role of path is played by “arc of great circle”. The first postulational treatment of the subject seems to be that of Halsted [10] for the two-dimensional case. Kline [11] under the name double elliptic geometry, gave a greatly simplified foundation for the three-dimensional case based on the primitive notions point and order. Halsted and Kline study not merely descriptive (that is positional, non-metrical) properties of figures but also introduce metrical notions by postulating or defining congruence. Kline includes a continuity postulate designed to yield real spherical geometry.


2020 ◽  
Vol 12 (2) ◽  
pp. 137-149
Author(s):  
Gamar Al Haddar ◽  
Nurul Azmi

This study aims to determine the role of teaching aids by teachers in increasing student motivation at Elementary School 027 Samarinda Ulu in the 2019/2020 learning year. The technique of determining the subject used in this research was purposive sampling, and the data analysis techniques used data collection, data selection, data presentation, and conclusion drawing. The type of triangulation used is source triangulation.The result of the research is that the teacher uses teaching aids that are two-dimensional and three-dimensional. The increase in learning motivation for grade 1B students is good, and this is evidenced by the willingness of students to bring props, increasing the enthusiasm of students to improve their lack of grades, increasing the focus of student learning, the enthusiasm of students in demonstrating the use of teaching aids directly.


2004 ◽  
Vol 63 (3) ◽  
pp. 143-149 ◽  
Author(s):  
Fred W. Mast ◽  
Charles M. Oman

The role of top-down processing on the horizontal-vertical line length illusion was examined by means of an ambiguous room with dual visual verticals. In one of the test conditions, the subjects were cued to one of the two verticals and were instructed to cognitively reassign the apparent vertical to the cued orientation. When they have mentally adjusted their perception, two lines in a plus sign configuration appeared and the subjects had to evaluate which line was longer. The results showed that the line length appeared longer when it was aligned with the direction of the vertical currently perceived by the subject. This study provides a demonstration that top-down processing influences lower level visual processing mechanisms. In another test condition, the subjects had all perceptual cues available and the influence was even stronger.


2014 ◽  
Vol 11 (01) ◽  
pp. 35-42
Author(s):  
M. Hermans

SummaryThe author presents his personal opinion inviting to discussion on the possible future role of psychiatrists. His view is based upon the many contacts with psychiatrists all over Europe, academicians and everyday professionals, as well as the familiarity with the literature. The list of papers referred to is based upon (1) the general interest concerning the subject when representing ideas also worded elsewhere, (2) the accessibility to psychiatrists and mental health professionals in Germany, (3) being costless downloadable for non-subscribers and (4) for some geographic aspects (e.g. Belgium, Spain, Sweden) and the latest scientific issues, addressing some authors directly.


2016 ◽  
pp. 33-50
Author(s):  
Pier Giuseppe Rossi

The subject of alignment is not new to the world of education. Today however, it has come to mean different things and to have a heuristic value in education according to research in different areas, not least for neuroscience, and to attention to skills and to the alternation framework.This paper, after looking at the classic references that already attributed an important role to alignment in education processes, looks at the strategic role of alignment in the current context, outlining the shared construction processes and focusing on some of the ways in which this is put into effect.Alignment is part of a participatory, enactive approach that gives a central role to the interaction between teaching and learning, avoiding the limits of behaviourism, which has a greater bias towards teaching, and cognitivism/constructivism, which focus their attention on learning and in any case, on that which separates a teacher preparing the environment and a student working in it.


1996 ◽  
Vol 34 (1) ◽  
pp. 27
Author(s):  
Sue Yon Shim ◽  
Ki Joon Sung ◽  
Young Ju Kim ◽  
In Soo Hong ◽  
Myung Soon Kim ◽  
...  

2014 ◽  
Vol 155 (22) ◽  
pp. 876-879
Author(s):  
András Schubert

The role of networks is swiftly increasing in the production and communication of scientific knowledge. Network aspects have, therefore, an ever growing importance in the analysis of the scientific enterprise, as well. The present paper demonstrates some techniques of studying the network of scientific journals on the subject of seeking the position of Orvosi Hetilap (Hungarian Medical Journal) in the international journal network. Orv. Hetil., 2014, 155(22), 876–879.


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