visual control
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2021 ◽  
Vol 1 (2) ◽  
pp. 31-35
Author(s):  
Ana Fitria ◽  
Nora Iffatul Maula Ahmad

Refugia merupakan tanaman yang dapat menarik dan mengundang sejumlah musuh alami seperti hama, pretador dan parasitoid. Selain itu, refugia juga membantu para petani untuk melindungi sawahnya seperti tanaman padi, jagung dan lain-lain. Dengan adanya tumbuhan liar atau tanaman refugia sebagai bentuk pelestarian Artrhopoda agar ekosistem tetap terjaga dan seimbang. Penelitian ini bertujuan untuk mengetahui frekuensi dan distribusi temporal kunjungan harian Arthropoda pada tanaman Ageratum Conyzoides dan Synedrella Nodiflora hasilnya dari penelitian tersebut akan digunakan sebagai bahan pengembangan e-katalog. Penelitian dilakukan di area pertanian Desa Wringinpitu Kecamatan Mojowarno Kabupaten Jombang. Metode yang digunakan dalam penelitian ini adalah metode visual control dengan pengamatan dilakukan secara 3x ulangan. Hasil penelitian ini menunjukkan adanya perbedaan frekuensi dan ditribusi temporal kunjungan Arthropoda terhadapan tanaman Ageratum Conyzoides dan Synedrella Nodiflora. Pada tumbuhan liar Ageratum Conyzoides dikunjungi oleh 8 family Arthropoda sedangan tumbuhan liar Synedrella Nodiflora hanya dikunjungi 6 family Arthropoda. Hasil dari kegiatan pengamatan ini akan dibuat sebagai pengembangan bahan ajar e-katalog untuk memudahkan peserta didik agar dapat mengenal dan mempelajari tentang hewan Artrhopoda yang ada di area pertanian. Agar mendapatkan kelayakan dalam buku sampingan peserta didik ini, perlu divalidasi oleh ahli materi dan peserta didik dengan aspek-aspek yang dinilai mengguunakan skala likert kemudian dianalisis dan diperoleh tingkat pencapaian sebesar 80 % yang artinya layak digunakan.


Author(s):  
Igor Nevliudov ◽  
Oleksandr Tsymbal ◽  
Artem Bronnikov

The subject of research in the article is the use of adaptive visual control in flexible integrated robotic systems. The goal of the work is the integration of visual control facilities into automated control systems for transport and handling operations of flexible integrated production. The article solves the following tasks: analyze the application of visual control methods in robotics, consider methods for improving adaptive visual work control systems, formulate the basic requirements for adaptive visual control systems, and develop a control model for a mobile robot in the space of a flexible integrated production systems and computer vision systems. To solve the set tasks, the methods of set theory, methods of automatic control theory, and methods of the theory of image processing were used. The following results were obtained: the analysis of visual control systems was carried out from the point of view of solving the problems of flexible integrated systems of modern production; the adaptive visual control scheme was improved by introducing a declarative workspace model and a functional model of a flexible integrated system; the main requirements and tasks of adaptive visual control systems are formulated; considered the main stages of processing visual information and their practical implementation, including multi-zone workspaces; a model of visual control of a mobile robot in a flexible integrated production workspace has been developed; the practical tasks of managing mobile platforms have been solved. Conclusions: the use of adaptive visual control in a production environment will allow combining the elements of flexible integrated production distributed in space, providing monitoring, control and refinement of control processes in real time, the functioning of intelligent control tools, which will improve the quality of control processes.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Clémence Lopez ◽  
Laurence Vaivre-Douret

AbstractHandwriting disorders (HD) are considered one of the major public health problems among school-aged children worldwide with significant interference on academic performances. The current study hypothesized that HD could be partly explained by a deficit in sensory feedback processing during handwriting. To explore this hypothesis, we have analyzed the effect of vision suppression on postural-gestural and on spatial/temporal/kinematic organization of drawing during an early pre-scriptural loop task with a digital pen, under two conditions: eyes open and eyes closed. Data collected from 35 children with HD were compared to data collected from typical children (typical group) from primary schools. The HD group showed significantly poorer postural control and an improvement on the spatial/temporal/kinematic organization of drawings when they closed their eyes compared to eyes opened. While in the typical group, postural-gestural organization became significantly more mature but there was no significant influence found on spatial/temporal/kinematic parameters of the loops. Thus, handwriting disorders could be explained by both proprioceptive/kinesthetic feedback disabilities and a disruptive effect of the visual control on the quality of the pre-scriptural drawings among these children who have kinesthetic memory and visuospatial disabilities. The ability of directing the strokes would remain dependent on sensory feedbacks, themselves insufficiently efficient, which would lead to difficulties in reaching a proactive control of handwriting. This current research is a liable contribution to enhance clinical practice, useful in clinical decision-making processes for handwriting disorders remediation.


Diagnostics ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2036
Author(s):  
Anna Olczak ◽  
Aleksandra Truszczyńska-Baszak ◽  
Katarzyna Gniadek-Olejniczak

Cerebral amyloid angiopathy (CAA) is one form of disease of the small vessels of the brain and can cause frequent cerebral hemorrhages as well as other types of stroke. The aim of the study was to analyze the static and dynamic balance of the body and changes in the tension of selected muscles of the cervical spine in patients with CAA after stroke, depending on visual control or its absence, compared to healthy volunteers. Eight stroke patients and eight healthy subjects were examined. The functional Unterberger test and the Biodex SD platform were used to test the dynamic equilibrium, on which the static equilibrium was also assessed. Muscle tension was tested with the Luna EMG device. In static tests, the LC muscle (longus colli) was significantly more active with and without visual control (p = 0.016; p = 0.002), and in dynamic tests, significantly higher results for MOS (p = 0.046) were noted. The comparison of the groups led to the conclusion that the more functional deficits, the more difficult it is to keep balance, also with eye control.


2021 ◽  
Vol 2057 (1) ◽  
pp. 012089
Author(s):  
D O Semenov ◽  
S V Dvoynishnikov ◽  
D V Kulikov ◽  
V G Meledin ◽  
A S Chybov

Abstract This work deals with the development of the software for the system of synchronous control of the optical system of visual control over dynamic objects and the creation of algorithms for resolving conflicts of simultaneous illumination by several light sources. The software for the microcontroller for the system hardware is created as part of the work. An application for remote configuration of the device is developed. Algorithms for time-separation of signals for switching on lighting are implemented.


2021 ◽  
Vol 131 ◽  
pp. 103485
Author(s):  
Mauricio-Andrés Zamora-Hernández ◽  
John Alejandro Castro-Vargas ◽  
Jorge Azorin-Lopez ◽  
Jose Garcia-Rodriguez

Author(s):  
Dan Alexandru Szabo ◽  
Nicolae Neagu ◽  
Silvia Teodorescu ◽  
Ciprian Marius Panait ◽  
Ioan Sabin Sopa

Currently, sports activities require a high reaction speed, coordination, and balance, highlighting the relationship between proprioceptive control, visual control, and hand–eye coordination in youth. The present research assessed the proprioceptive control, reaction speed, and lower limb balance of youth from five different schools to identify the level of physical preparation of children in this direction. This prospective study was conducted between 1 January, 2020, and 29 February, 2020. A total of 107 healthy children (33 females and 74 males) with appropriate medical conditions, aged between 14 and 15 years, from five Romanian schools were included in the experiment. All children were assessed for visual control and reaction speed with the ruler drop test, and for lower limb balance, the standing stork test was used. Statistical analysis included descriptive statistics, data series distribution, and comparison of means and medians using specific statistical programs. Comparison of medians highlighted significant statistical differences in the standing stork test with eyes closed and the dominant leg compared with the nondominant leg (p = 0.0057). Males were compared to females at the nondominant leg (p = 0.0179); closed eyes were compared with opened eyes for the nondominant leg (p = 0.0175 and 0.0006) for the ruler drop test comparing the dominant hand with the nondominant hand (p = 0.0212). Children who engage in sports activities better integrated sensory information in motor action execution based on reaction speed and coordination with the nondominant hand.


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