Dear All
I found this story about using DINED in a nice 1D application
kind regards
Johan
Optimization of usage of the multimedia equipment
A.N. Zelenin*
, and M.L. Jusupov
Ural State Agrarian University, Yekaterinburg, Russia
Abstract. The occupations spent by means of the big screen, become
more and more widespread way of training. On faculty of maintenance of
transport and technological computers of faculty of transport-technological
computers and tools of the Ural state agrarian university since 1996 the
multimedia complex takes root into training. From the last developments it
is possible to note:
*creation of a computer class of simulators-simulators of agricultural
processes;
*development and implantation of interactive posters;
*development and implantation 3D computer models.
By preparation of bachelors in a direction «Agroengeniring» under the
profile: «Technical systems in agrobusiness» at teaching discipline
“Agricultural computers” for students 3 courses are applied the
multimedia.
1 Introduction
The occupations spent by means of the big screen, become more and more widespread
way of training.
On faculty of maintenance of transport and technological computers of faculty of
transport-technological computers and tools of the Ural state agrarian university since 1996
the multimedia complex takes root into training. From the last developments it is possible
to note:
- creation of a computer class of simulators-simulators of agricultural processes
- development and implantation of interactive posters
- development and implantation 3D computer models
2 Materials and Methods
By preparation of bachelors in a direction «Agroengeniring» under the profile: «Technical
systems in agrobusiness» at teaching discipline “Agricultural computers” for students 3
courses are applied the multimedia complex consisting of following means:
*Plasma TV LG model 50PQ600R
*Notebook HP model G62
The equipment incorporated through HDMI. High Definition Multimedia Interface (HDMI
plug - the interface for a multimedia of the high clearness, allowing to transfer digital - Corresponding author: agron@mail.ru
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© The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative
Commons Attribution License 4.0 (Creative Commons — Attribution 4.0 International — CC BY 4.0).
videodata of a high-resolution. However the traditional notebook is deprived possibilities of
the touch panel. Therefore it was accepted to substitute solution it on iPad with an adapter
on HDMI, that has enabled more creatively to approach to usage of multimedia resources.
3 Results and Discussion
Visibility in audiences with horizontal layout of a floor we shall define on its users.
Anthopometrical database DINED [2] (Delft University of Technology - TU Delft - the
Netherlands ) contains measurements of a human body in the ergonomic purposes on a site
http: // dined.io.tudelft.nl/en, dined2004,302. Databases of measurements of a human body
in various ergonomic poses (standing, sitting, working) are available in the open access [3-
5].
Fig.1. The Sizes of a body of the sitting person.
Source: http: // dined.io.tudelft.nl/en, dined2004,302.
To determine height of the lower side of the screen for audiences with horizontal layout
of a floor we shall consider Рис.1 which shows parameters of the sitting person. For
calculation of researched parameters of applied data it is used given Dr.Sci.Tech. J.F.M.
(Johan) Molenbroek.
Let’s concentrate on parameters at number 14, 16 and 17. Number 14 - height up to a
knee bend, number 16 - a level of eyes, and number 17 - height of the sitting person. A
feature team - the population of young men between 20 and 30 years of age, in other words
our averaged student.
The received sizes from a database (2004) are real for 90 % of such sampling.
The averaged sizes with appropriate standard deviations are taken for students man’s
(m) and female (f) a floor. Calculations are made in centimeters (cm).
The Size 14 is estimated as height of sitting and has parameters
m = 49.7 ± 3.1 cm and f = 44.1 ± 2.5 cm
The Size 16 is a height of layout of eyes in a sitting position and has parameters
m = 84.2 ± 3.9 cm and f = 77.9 ± 3.2 cm
The Size 17 is a height of the person in a sitting position and has parameters
m = 95.7 ± 3.9 cm and f = 88.8 ± 3.2 cm
The average sizes can be incorporated to determine the averaged height of eyes (the sum
of the sizes 14 and 16) or the averaged height of the person (number 14 and 17):
(1)
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When the average sizes are summarized, appropriate standard deviations sd1 and sd2
should be squared and added the double coefficient of correlation for the corresponding
size. The square root receives the corrected standard deviation sd3 for the appropriate sizes:
(2)
With a coefficient of correlation r = 0.65.
R value is defined on website DINED and used to unite the sizes.
As a result height of a level of an eye for students - men
133.9 ± 6.3 cm
This result - with normal allocation of a variable, as shown in a figure 3 that means, that
133.9 ± 6.3 cm makes 90 % of sampling of a population. This height of a level of eyes is
between 5-th and 95-th percent.
Fig. 2. Normal allocation with P5 and P95.
The distance from average X up to 5 percent (P5) or up to 95 percent (P95) at a standard
deviation 1.65 *sd means, that for students-male height of a level of eyes
P5 = 133.9 - 1.65 * 6.3 = 123.5 cm and
P95 = 133.9 + 1.65 * 6.3 = 144.3 cm
Height of the sitting person for students - men 145.4 ± 6.3 cm that means
P5 = 145.4 - 1.65 * 6.3 = 135.0 cm and
P95 = 145.4 + 1.65 * 6.3 = 155.8 cm
Height of a level of an eye for студенток - 122.0 ± 5.2 cm
Their appropriate parameters will be
P5 = 122.0 - 1.65 * 5.2 = 113.4 cm and
P95 = 122.0 + 1.65 * 5.2 = 130.6 cm
At last, the height of the sitting person for student-female will be 132.9 ± 5.6 cm that
means
P5 = 132.9 - 1.65 * 5.6 = 123.7 cm and
P95 = 132.9 + 1.65 * 5.6 = 142.1 cm
In audiences students usually sit next to horizontal layout of a floor with each other, and
as the friend behind of the friend. Depending on position of the demonstration screen the
majority of students should move sideways from each other to watch the information
presented on the screen. Installation of the screen in the appropriate height received from
вышеупомянутых of parameters, can prevent such situations. Its height for students can
vary between the minimum height approximately 130 cm up to a maximum approximately
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in 155 cm Height layout of the lower edge of the screen of 140 cm approaches in most
cases.
Output - distance up to the lower edge of the screen should make 140 cm above a level
of a floor.
Fig. 3. Parameters of layout of the screen.
Such data are joined to the standard guidelines. For example, company Classic Solution
- the German company making projectional screens already more of 10 years, on the site
(http: //, screens.classic-solution.ru/service/choice.php) informs - «If a floor in horizontal
(i.e. not oblique, as in a cinema) the lower edge of the screen should is on distance of 1-1,5
meters from a floor (distance D in a figure 3) » [1-3].
For observance of such parameters it is not enough to allocate the screen monitor with
the big diagonal simply on desktop. It will be allocated too low and back numbers of
students in an audience will acquire is much worse the information. Therefore it was
accepted to install solution in a specialized audience of 3212 faculties of maintenance of
transport and technological computers plasma TV LG model 50PQ600R on a special rack
with the regulated height of layout of the TV. After that students have ceased to rise, pull
necks and to ask again the lecturer during occupation and all audience the information
going from the demonstration screen became accessible. Thus, having optimized height of
layout of the screen monitor, we have received better mastering knowledge [6-8].
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Fig. 4. Optimization of height of layout of the screen monitor in room #3212.
4 Conclusion
As additional organizational actions it is possible to recommend the following: the browse
will be better, if lower students will sit ahead of an audience, and higher students will take a
place in back numbers.
For modern professional creation teachers need to acquire that one of fundamental
conditions in the given process belongs to creative possibilities, which it is necessary not
only to develop but as in every possible way to encourage them during training in HIGH
SCHOOL for students.
All situations and techniques of manifestation of creative abilities of students will be
possible only at the non-standard ratio of teachers to the given problem, otherwise process
of preparation for such occupations much more difficultly also takes away more time.
Therefore it is necessary to realize, that those agroengineers which we today release from
agrarian university, will shortly define the future development of our state, and that, how
much fast and effectively they will solve the professional tasks, depends on quality of the
received derivation and a level of development of their creative abilities.
References
- Gaziziva, The electronic journal, 7, 8 (2008) http: // meli.ru
- Anthopometrical database DINED (Delft University of Technology, TU Delft, the
Netherlands) http: //, dined.io.tudelft.nl/en, dined2004,302. - Dr. ing. A.H.W. (Piet) van der Zanden, Delft University of Technology, Netherlands
http://, homepage.tudelft.nl/9c41c/Readability_in_classrooms.pdf/ - Classic Solution, http: //, screens.classic-solution. Ru/service/choice.php
- A.N. Zelenin, M.L. Jusupov, To a question of teaching of discipline « Agricultural
computers » with usage of an interactive board, http: //,
Педагогические науки/ 5
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5 - T.-H. Jiang, S.-L.Chen, J.K.C. Chen, Journal of Business Research, 69 (6), 2252-2258
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Physics: Conference Series, 943 (1), 012047, (2018)
http://www.iop.org/EJ/journal/conf doi: 10.1088/1742-6596/943/1/012047 - M. Armenteros, S.-S. Liaw, M.J. Sánchez-Franco, M. Fernández, R.A. Sánchez,
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