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2021 ◽  
pp. 252-257
Author(s):  
П.В. Жиляков ◽  
С.И. Фатеев

В настоящей работе дано описание многопоточной параллельной организации работы алгоритмов, входящих в состав программной части подводной системы технического стереозрения подводного робота. Данные, полученные системой технического стереозрения, в последствии поступают на систему управления для выполнения операций по управлению роботом и оператору на экран монитора для последующего принятия им управленческих решений. В большинстве случаев выполнение алгоритмов происходит последовательно. Суммарное время обработки одного кадра складывается из времени работы всех алгоритмов, входящих в состав программной части. Таким образом, в однопоточном режиме даже самые быстрые алгоритмы будут ожидать своей очереди на выполнение. Следовательно, система управления и оператор в случаях, требующих большие вычислительные мощности, будут получать данные недостаточно быстро. Естественно для увеличения быстродействия всей программной части возникает потребность организовать работу входящих в состав алгоритмов параллельно, многопоточно, но такой способ организации работы дополнительно создаёт ряд проблем, которых бы не было, если работа алгоритмов была организована последовательно, однопоточно. В статье приведены способы решения этих проблем, проведено сравнение времени работы многопоточной и однопоточной реализации алгоритмов. This paper describes the multithreaded parallel organization of the algorithms that are part of the software of the underwater system of technical stereo vision of an underwater robot. The data obtained by the technical stereo vision system is subsequently transmitted to the control system to perform robot control operations and to the operator on the monitor screen for subsequent management decisions. In most cases, the algorithms are executed sequentially. The total processing time of one frame consists of the operating time of all algorithms included in the software part. Thus, in single-threaded mode, even the fastest algorithms will be waiting for their turn to execute. Consequently, the control system and the operator in cases requiring large computing power will not receive data quickly enough. Naturally, in order to increase the speed of the entire software part, there is a need to organize the work of the algorithms included in parallel, multithreaded, but this way of organizing work additionally creates a number of problems that would not exist if the algorithms were organized sequentially, single-threaded. The article presents ways to solve these problems, compares the operating time of multithreaded and single-threaded implementation of algorithms.


Author(s):  
P. W. Rusimamto ◽  
Endryansyah Endryansyah ◽  
L. Anifah ◽  
R. Harimurti ◽  
Y. Anistyasari

The purpose of this research is to monitor the temperature by applying arduino pro mini and ESP32 cam using IoT technology which is connected to a web interface. Arduino is used as the main brain of the system where arduino will read data from the MLX90614-ACF temperature sensor. Sensor data will continue to be sent to the server by arduino via the ESP32 cam module. This tool can also take pictures and send images automatically at the same time when measuring temperature. The captured image will automatically be sent to the PC/laptop monitor screen via the website. The website is used to display and monitor the results of temperature measurement data and display the image results from the ESP32 cam. The process of taking photos and measuring body temperature is done automatically. Users can also view data from sensors and photo data sent by arduino and ESP32 cam via the provided web interface. From the test results, this system has been running well where all sensor data is sent and can be displayed on the website. Images and measurement data results are sent to the monitor screen via the website interface with a measurement accuracy of 99.6%.


2021 ◽  
Vol 2 (1) ◽  
pp. 20
Author(s):  
Febriana Dwi Rahmadani ◽  
R Arif Wibowo ◽  
Khusnul Ain

This study was aimed to determine the difference of the effective dose from the clinical and theoretical on the head CT-Scan examination of adult patients and compare the data with the permitted dose limit from BAPETEN. The data collected at Haji Hospital Surabaya using MSCT Siemens Somatom Definition AS 64 Slice on five adult patients, aged between 28-67 years old. The step before the scanning process were adjusting the voltage (kV) and current values (mA) on the CT-Scan. The scanning duration for each patient was 4s and resulted in head images with CTDIvol and DLP values displayed on the monitor screen. The effective dose limit value for the head CT scan was 2.8 mSv, according to BAPETEN. The study results showed that the effective dose on head CT Scan examination was below the safe dose limit value, while the different fractions between the clinical and theoretical of Patient A, B, C, D, and E was 4.11%; 5.46%; 6.19%; 6.52%; and 5.42%, respectively.


Author(s):  
Алексей Александрович Порошин ◽  
Кирилл Александрович Попонин ◽  
Вера Владимировна Королева ◽  
Наталья Александровна Сизонова

Рассмотрены вопросы разработки требований к программному обеспечению автоматизированного рабочего места диспетчера пожарно-спасательного подразделения, а также разработки требований к формату отображения информации на экране монитора в системах передачи извещений о пожаре. Предложены варианты отображения информации на экране монитора автоматизированного рабочего места с учетом представления на нем различных информационных атрибутов: меню настройки, поле отображения плана объекта защиты, поле пиктограмм для управления информацией и ее квитирования, поле счетчика числа тревожных сигналов, поле изменения параметров объектов и др. There is considered the elaboration of requirements for the software of automated workplace of the dispatcher of fire and rescue unit. The elaboration of requirements for display format of information on the monitor screen in fire notification transmission systems is also examined. There are proposed variants of information displaying on the monitor of automated workstation, taking into account the presentation of various information attributes, such as: the setup menu, the field for displaying the plan of protected object, the icon field for managing information and its acknowledgment, the field of counter of alarms’ number, the field for changing objects parameters, etc.


Author(s):  
V.M. Lіashenko ◽  
O.V. Pidvalna ◽  
O.V. Buleychenko

The article considers the mode of physical activity of students in conditions of self-isolation and the need to introduce distance learning. Isolation has limited students' daily physical activity, as almost all learning takes place in a distance format, in front of a monitor screen, taking into account physical education classes. Physical activity significantly reduces the risk of viral infections, anxiety levels, and regular exercise improves well-being in chronic diseases, which are mentioned as the most common comorbidities in recent COVID-19 studies. The issue of maintaining motor activity during the period of self-isolation for students is quite acute, as most of the time they study remotely, so the level of motor activity has decreased significantly. We should pay special attention to students with disabilities, ie those who study in SMG groups, as this group of students is most sensitive to the negative effects of hypodynamics. Our study assessed the physical activity of students during the COVID-19 pandemic through a survey. It was found that more than half of the surveyed students perform simple physical exercises for less than 30 minutes in self-isolation. for one day. Only a third of students perform physical activity for more than 60 minutes. for one day. Only 44% of respondents spend more than an hour in the fresh air. By type of physical activity, the largest percentage (52%) is a wellness walk. As for physical activity during the week, 36% of respondents do less than 2 times a week. During quarantine and distance learning, 34% of surveyed students gained weight, 42% did not gain weight, 24% lost. Only 8% of respondents spend less than 5 hours on a computer, and more than 90% spend more than 9 hours on a monitor screen. It is established that the limitations associated with self-isolation have a negative effect on students, so although some of them try to alternate mental and physical activities, performing physical exercises at home, but in general, the level of physical activity of students is quite low. Most cannot set aside special time during the day for physical activity, not only for special exercises, but also for normal daily work.


2021 ◽  
Vol 6 (1) ◽  
pp. 12
Author(s):  
Suharsono Bantun ◽  
Jayanti Yusmah Sari ◽  
Qammaddin Qammaddin ◽  
Rahmat Karim

The learning implementation in the subject of ¬social science¬, especially the topic of Indonesia's geographical location at SD Negeri 99 Pongrakka is still carried out in a classical way, namely using the lecture method with learning media in the form of depictions on the blackboard or just observing pictures through textbooks. These methods make the learning process less interesting and seem passive because there is no direct interaction between the topic and the students. To create interactive learning, we propose the development of learning media by utilizing Augmented Reality technology. The system proposed in this study can display the geographical location of the province in 3 dimensions by means of the user pointing the marker at the camera then the camera detects the marker and the object will be displayed directly on the monitor screen according to the marker used. After testing the system based on the Software Requirement Specification, it was able to be concluded that the application of visualizing the geographical location of the province based on Augmented Reality could not only make learning more interactive but also more interesting, so that it could be used as an option for learning methods.


2021 ◽  
Vol 3 (134) ◽  
pp. 87-98
Author(s):  
Mykhailo Zinchenko ◽  
Oleh Potap ◽  
Maria Rybalchenko ◽  
Ivan Manachyn

Studying the operation of automated control systems using computers significantly re-duces the time, but does not give a complete picture of the system on a real object. Therefore, the use of real objects for the study of control systems in the educational process is appropriate and useful. The purpose of the study is to modernize the laboratory rolling mill 150, designed for rolling lead, tin and plasticine, and equip it with sensors and actuators. The manual pressure device of the rolling stand was replaced by an automated one, for which an worm gearbox was additionally installed, which allowed to increase the total gear ratio to 94.5. The thrust screws are moved from the AC motor, which is controlled by the DOP-103BQ operator panel and the MS-300 frequency converter with built-in PLC. As a displacement sensor used photopulse sensor PDF-3. The installed equipment and the developed software for the operator panel and the PLC provided high accuracy of in-stallation of pressure screws in the set position. Additionally, software was developed to measure the power parameters of the rolling process: the rolling force and the electrical parameters of the DC motor of the drive of the rolling stand. The software allows you to configure the board, ie select the type of board, the channels used to measure voltage signals, select measurement ranges, signal color on the graph, signal polling frequency, number of points to display on the graph, parameters of graph coordinate axes. In the process of measurement, the output of signals to the monitor screen is performed simultaneously. Before rolling, the measurement process is started using the keyboard or mouse and the change of parameters is displayed on the screen in real time. At the end of the rolling process, the measurement stops, and the graphs of parameter changes over time remain on the monitor screen, which allows you to quickly analyze the process. The measurement results can be saved in an Excel file and then the file can be viewed. The file stores: the time of measurement of parameters and the values of parameters those were measured. Measurement of power parameters and sizes of rolled products before and after rolling allowed to determine the stiffness of the stand and rolled metal, which is necessary to calculate the transmission coefficients of the automated tuning system of the rolling stand.


2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Ahmad Osailan

Abstract Background The use of smartphones has become widely popular, especially among young people, for multiple purposes other than communication, including gaming and internet browsing. The hand and wrist weakness is one of the main complications associated with the increased use of smartphones. This weakness occurs due to the repetitive flexion and extension of the wrist, thumb, and fingers, leading to a significant musculoskeletal pathology. Little is known about the relationship between smartphone usage duration (using the phones ability to monitor screen time) and hand-grip, pinch-grip strength. Therefore, the study was aimed to investigate the association between smartphone usage duration and hand-grip, pinch-grip strength among young people. Methods One hundred young males volunteered to participate in the study. Participants were briefly examined for height and weight using a portable stadiometer and a digital scale. Hand-grip, pinch-grip strength measurement was performed using a hand-held dynamometer. Smartphones usage duration was obtained from the daily average screen time reported in the last seven days. Results Mean daily usage of smartphone among the participants was 7.8 ± 2.2. There was a weak significant inverse relationship between smartphone usage duration and hand-grip strength (r=-.22, p = .03) and pinch-grip strength (r=-.28, p = .004). Linear regression revealed that 18.8 % of the variance in hand-grip strength and 20.4 % of the variance in pinch-grip strength was explained by age, and smartphone usage duration, with the addition of BMI only to hand-grip strength (p’s < 0.00). Conclusions Prolonged use of smartphones was related to weaker hand-grip and pinch-grip. Despite the weak relationship, the study showed that smartphone usage duration might contribute as a factor along with age to hand muscles’ strength.


Author(s):  
Roman V. Levchenko ◽  

The article deals with the developed method for diagnosing photo scanning of solar cells using a monitor screen and a personal computer connected to it. The photo-scanning method can be used as quality control in the technological chain of semiconductor devices. The method comprises hardware and software. The hardware part is used for obtaining photoresponse in form of voltage. The software part ensures receiving, processing, storing and visualizing of data. The proposed device has a problem of entering scanning area of the solar cells. This problem is revealed at stage of element positioning in the diagnostic process. The defect is eliminated by introducing a software and mathematical support for searching sensitive area of an element. The algorithm of the scanning area search scanning is a process of exposure light spot in form of rows and columns. Photovoltage values in these areas are compared with the value of insensitivity limit. As a result, the program receives illumination area of the the solar cell effective region. The algorithm also increases the diagnostic speed in case of complete loss of efficiency in a some area of


Author(s):  
Viktoryna A. Romanova

The most common method of forming semi-control polyhedra consists in cutting off angles and ribs of regular polyhedra by planes. The aim of the work - to consider the automated formation of a number of surfaces of semi-regular Archimedean polyhedra based on the dodecahedron. These include the truncated dodecahedron, the icosododecahedron, the romboicosododecahedron and the truncated icosododecahedron. The formation of surfaces is carried out by the kinematic method in AutoCAD using programs compiled in the AutoLISP language. Methods. The methodology for the formation of these polyhedra provides for truncation of the angles and edges of the dodecahedron. This requires the calculation of a number of geometric parameters of these polyhedra and dodecahedron, such as the value of the truncation of the dodecahedron edges, the size of the edges of truncated polyhedra, the centers of faces, dihedral angles, etc. In order to generate these surfaces, a frame is constructed because the frame lines are used as guides to form surfaces in a kinematic way. The electronic model of each polyhedron is constructed as a set of compartments of surfaces of all its faces, and each compartment is assigned to a certain layer of the drawing. The frame and electronic model of the polyhedra under study are formed by means of user programs composed in the functional language AutoLISP. The process of forming surfaces of selected polyhedra in the AutoCAD environment is provided by special programs that are also compiled in the AutoLISP language. Results. Software was created to demonstrate the process of formation of a number of Archimedes polyhedra on the monitor screen.


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