Characteristic Views and the Visual Inspection of Simple Faceted and Smooth Objects: ‘Tetrahedra and Potatoes’

Perception ◽  
1988 ◽  
Vol 17 (6) ◽  
pp. 703-720 ◽  
Author(s):  
David I Perrett ◽  
Mark H Harries
Keyword(s):  
Surface Area ◽  
Visual Inspection ◽  
Human Subjects ◽  
Vertical Axis ◽  
Line Of Sight ◽  
Surface Appearance ◽  
Image Characteristics ◽  
Characteristic Views ◽  
Smooth Objects ◽  
The Way

The way in which human subjects distribute their time when attempting to learn the surface appearance of objects placed on a stand free to rotate about its vertical axis was investigated. Experiments were undertaken to establish whether observers concentrate their time on particular views and, if so, to determine the image characteristics of the preferred views. For tetrahedra, subjects concentrated on views which presented a face or an edge centred on the line of sight. Both of these views were symmetric about the vertical axis. For potatoes as examples of opaque smooth objects, subjects concentrated on four views in which the object's principal (long) axis was oriented side-on or end-on to their line of sight. For such views the horizontal width (and surface area) of the object's image had maximum and minimum values. Preferred views were not systematically related to views defined as stable from the appearance of surface boundaries or ‘singularities’.

scholarly journals Characterization and Performance of Carbon Films Deposited by Plasma and Ion Beam Based Techniques

1994 ◽  
Vol 354 ◽  
Author(s):  
K.C. Walter ◽  
H. Kung ◽  
T. Levine ◽  
J.T. Tesmer ◽  
P. Kodali ◽  
...  
Keyword(s):  
Wear Rate ◽  
Surface Area ◽  
Ion Beam ◽  
Carbon Films ◽  
The Self ◽  
Line Of Sight ◽  
Rf Power ◽  
Hard Carbon ◽  
Self Bias ◽  
Cathodic Arc

AbstractPlasma and ion beam based techniques have been used to deposit carbon-based films. The ion beam based method, a cathodic arc process, used a magnetically mass analyzed beam and is inherently a line-of-sight process. Two hydrocarbon plasma-based, non-line-of-sight techniques were also used and have the advantage of being capable of coating complicated geometries. The self-bias technique can produce hard carbon films, but is dependent on rf power and the surface area of the target. The pulsed-bias technique can also produce hard carbon films but has the additional advantage of being independent of rf power and target surface area. Tribological results indicated the coefficient of friction is nearly the same for carbon films from each deposition process, but the wear rate of the cathodic arc film was five times less than for the self-bias or pulsed-bias films. Although the cathodic arc film was the hardest, contained the highest fraction of sp3 bonds and exhibited the lowest wear rate, the cathodic arc film also produced the highest wear on the 440C stainless steel counterface during tribological testing. Thus, for tribological applications requiring low wear rates for both counterfaces, coating one surface with a very hard, wear resistant film may detrimentally affect the tribological behavior of the counterface.

Navigating in a volumetric world: Metric encoding in the vertical axis of space

2013 ◽  
Vol 36 (5) ◽  
pp. 546-547 ◽  
Author(s):  
Theresa Burt de Perera ◽  
Robert Holbrook ◽  
Victoria Davis ◽  
Alex Kacelnik ◽  
Tim Guilford
Keyword(s):  
Spatial Information ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Vertical Component ◽  
Vertical Axis ◽  
Orthogonal Axis ◽  
Experimental Protocols ◽  
Three Dimensional Space ◽  
The Way

AbstractAnimals navigate through three-dimensional environments, but we argue that the way they encode three-dimensional spatial information is shaped by how they use the vertical component of space. We agree with Jeffery et al. that the representation of three-dimensional space in vertebrates is probably bicoded (with separation of the plane of locomotion and its orthogonal axis), but we believe that their suggestion that the vertical axis is stored “contextually” (that is, not containing distance or direction metrics usable for novel computations) is unlikely, and as yet unsupported. We describe potential experimental protocols that could clarify these differences in opinion empirically.

Designing the Learning Goal Space for Human Toward Acquiring a Creative Learning Skill

2018 ◽  
pp. 460-475
Author(s):  
Takato Okudo ◽  
Tomohiro Yamaguchi ◽  
Keiki Takadama
Keyword(s):  
Human Subjects ◽  
Learning Task ◽  
Learning Support ◽  
Learning Skill ◽  
Learning Support System ◽  
Creative Learning ◽  
The Future ◽  
Future Work ◽  
Human Sense ◽  
The Way

This chapter presents the way to design a learning support system toward acquiring a creative skill on learning. There are two research goals. One is to establish designing the creative learning task. The other is to make clear the human sense of creativity. As the background of this research, the jobs with high creativity or social skills will remain in the future. However, acquiring human's creativity is too difficult for computers. To solve this problem, the authors focus on the way to utilize higher creativity of human than that of computers. The main method is the visualization of learning traces to support awareness for creativity on the learning. The authors conducted the preliminary learning experiment with three human subjects. After that, the questionnaire and the hearing investigation were conducted. As the future work, the authors are planning to conduct an updated version of the experiment.

Estimation of body surface area of extremely obese human subjects

1960 ◽  
Vol 15 (5) ◽  
pp. 781-784 ◽  
Author(s):  
Garrett R. Tucker ◽  
James K. Alexander
Keyword(s):  
Surface Area ◽  
Body Surface Area ◽  
Body Surface ◽  
Human Subjects ◽  
Total Body Surface Area ◽  
The Body ◽  
Du Bois ◽  
Linear Formula ◽  
Total Body ◽  
Obese Human

The body surface areas of one normal and four extremely obese human subjects have been estimated by three methods: a) direct measurement by a method similar to that which Du Bois described; b) calculation from the Du Bois height-weight formula; and c) calculation from the Du Bois linear formula. The values for the total body surface area of the obese subjects calculated from the height-weight formula varied up to 11% below those that were directly measured. The values for the total body surface area obtained with the linear formula ranged between 13% and 20% above the direct measurements, this being almost entirely due to discrepancies in the trunk and in the thigh estimations. It has been concluded that estimation of the body surface area oxf extremely obese subjects by the Du Bois height-weight formula is satisfactory when considered in relation to the accuracy of the physiologic measurements with which it is generally used. Because of the unusual body form the Du Bois linear formula has been found unsatisfactory for this group. Submitted on March 1, 1960

Thinking Outside the Body: New Materialism and the Challenge of the Fetish

2018 ◽  
Vol 5 (3) ◽  
pp. 304-317 ◽  
Author(s):  
Louise Green
Keyword(s):  
Sigmund Freud ◽  
Karl Marx ◽  
Human Subjects ◽  
The Body ◽  
New Materialism ◽  
Western Thought ◽  
Everyday Experience ◽  
Intellectual Tradition ◽  
The Way

Fetishism has become such a key concept within Western thought, largely as a result of the work of Karl Marx and Sigmund Freud, that it is easy to forget its origins. But the notion of fetishism originates in a very different context, and in many ways, an incommensurable system of thought—animism. Returning to this submerged backstory, I deploy the concept of the fetish to confront the recent enthusiasm for materiality that has emerged in response to current environmental crises. New materialism considers matter to have a liveliness not dependent on human subjects. This paper considers what divides “vital materialism” from the “animist materialism” that continues to structure everyday experience in a range of contexts in Africa and elsewhere and investigates the way in which fetishism, within the intellectual tradition of animism, alerts us to the strange ephemeralness of the avowed materialism of the new materialist project.

Eye-head coordination during large gaze shifts

1995 ◽  
Vol 73 (2) ◽  
pp. 766-779 ◽  
Author(s):  
D. Tweed ◽  
B. Glenn ◽  
T. Vilis
Keyword(s):  
Degrees Of Freedom ◽  
Human Subjects ◽  
Three Dimensional ◽  
Vertical Axis ◽  
Head Movements ◽  
Gaze Shifts ◽  
Healthy Human ◽  
Vertical Movements ◽  
The Gaze ◽  
Acceleration And Deceleration

1. Three-dimensional (3D) eye and head rotations were measured with the use of the magnetic search coil technique in six healthy human subjects as they made large gaze shifts. The aims of this study were 1) to see whether the kinematic rules that constrain eye and head orientations to two degrees of freedom between saccades also hold during movements; 2) to chart the curvature and looping in eye and head trajectories; and 3) to assess whether the timing and paths of eye and head movements are more compatible with a single gaze error command driving both movements, or with two different feedback loops. 2. Static orientations of the eye and head relative to space are known to resemble the distribution that would be generated by a Fick gimbal (a horizontal axis moving on a fixed vertical axis). We show that gaze point trajectories during eye-head gaze shifts fit the Fick gimbal pattern, with horizontal movements following straight "line of latitude" paths and vertical movements curving like lines of longitude. However, horizontal (and to a lesser extent vertical) movements showed direction-dependent looping, with rightward and leftward (and up and down) saccades tracing slightly different paths. Plots of facing direction (the analogue of gaze direction for the head) also showed the latitude/longitude pattern, without looping. In radial saccades, the gaze point initially moved more vertically than the target direction and then curved; head trajectories were straight. 3. The eye and head components of randomly sequenced gaze shifts were not time locked to one another. The head could start moving at any time from slightly before the eye until 200 ms after, and the standard deviation of this interval could be as large as 80 ms. The head continued moving for a long (up to 400 ms) and highly variable time after the gaze error had fallen to zero. For repeated saccades between the same targets, peak eye and head velocities were directly, but very weakly, correlated; fast eye movements could accompany slow head movements and vice versa. Peak head acceleration and deceleration were also very weakly correlated with eye velocity. Further, the head rotated about an essentially fixed axis, with a smooth bell-shaped velocity profile, whereas the axis of eye rotation relative to the head varied throughout the movement and the velocity profiles were more ragged. 4. Plots of 3D eye orientation revealed strong and consistent looping in eye trajectories relative to space.(ABSTRACT TRUNCATED AT 400 WORDS)

scholarly journals Morphology and Interaction of Galaxies using Deep Learning

2016 ◽  
Vol 12 (S325) ◽  
pp. 205-208
Author(s):  
Fernando Caro ◽  
Marc Huertas-Company ◽  
Guillermo Cabrera
Keyword(s):  
Machine Learning ◽  
Deep Learning ◽  
Visual Inspection ◽  
Interaction Analysis ◽  
Machine Learning Techniques ◽  
Huge Amount ◽  
New Approaches ◽  
Learning Techniques ◽  
First Galaxies ◽  
The Way

AbstractIn order to understand how galaxies form and evolve, the measurement of the parameters related to their morphologies and also to the way they interact is one of the most relevant requirements. Due to the huge amount of data that is generated by surveys, the morphological and interaction analysis of galaxies can no longer rely on visual inspection. For dealing with such issue, new approaches based on machine learning techniques have been proposed in the last years with the aim of automating the classification process. We tested Deep Learning using images of galaxies obtained from CANDELS to study the accuracy achieved by this tool considering two different frameworks. In the first, galaxies were classified in terms of their shapes considering five morphological categories, while in the second, the way in which galaxies interact was employed for defining other five categories. The results achieved in both cases are compared and discussed.

What Is Human Subjects Research?

2020 ◽  
Author(s):  
Kirstin Borgerson
Keyword(s):  
Stem Cells ◽  
Ethical Issues ◽  
Human Subjects ◽  
General Question ◽  
Human Subjects Research ◽  
Research Participants ◽  
Is Research ◽  
Social Scientific ◽  
The Way

This chapter provides an overview of the nature, scope, and practice of human subjects research. It begins by tackling the general question, “What is research?” Attempts to answer this question typically define research by its methods and/or goals, and the chapter surveys the limits of these definitions through discussion of tough boundary cases. Along the way, the chapter describes various methods (quantitative, qualitative) and types of human subjects research (clinical, social scientific, etc.). The second section of the chapter investigates who is referred to by the language of “human subjects”: which humans tend to be selected as research participants, where human subjects are located globally, and how these locations are changing. The chapter also raises questions about which subjects are considered human in this context, for instance, whether definitions include embryos, cadavers, or stem cells. Throughout, the chapter highlights the ethical issues raised by the various types of activities and subjects described.

When the Camera Is on Us

2018 ◽  
Author(s):  
Miles Hollingworth
Keyword(s):  
Line Of Sight ◽  
The Way

Until you actually turn to the camera, you can have no idea whether you are acting or not, pretending or not. Certainty, the prototype, eternity, etc. is something you have to turn to look in the eye. Otherwise you will only see with it, you will only see down its same line of sight, you will only see what it sees. You will only see what everyone else can see down that same line of sight. Because what the camera can see is what everyone else could see, too, if they could all be there. ‘Camera’, in the way that it is used here and across the rest of the book, is a metaphorical way of saying: ‘Everyone has to see it, too!’ In this chapter, we learn that we are not going to be replaced by machines, but that we will begin to think and look and act like them.

Perception, Desire, and Action

2021 ◽  
pp. 194-224
Author(s):  
David Charles
Keyword(s):  
Human Subjects ◽  
Human Soul ◽  
The Way

Aristotle, it is argued, applied the style of account he developed for perception of sounds, colours, and tastes to the perception of objects, their size and movement, and to imagination and practical thought. His discussion of these topics is best understood, in line with the Impure Form Interpretation, as presenting them as, in the way explained, inextricably psycho-physical. It constitutes his attempt to develop an integrated picture of how perception leads to desire and to bodily action in unified, essentially and inextricably embodied human subjects. This discussion provides the basis for an understanding of his account of the distinctively human soul and its characteristic activities.

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