scholarly journals Impact of digital boards on hand and neck muscle activity during online teaching process

Author(s):  
S. Shankar ◽  
R. Naveenkumar ◽  
R. Nithyaprakash ◽  
S. Narmatha ◽  
R. Rithic Sai ◽  
...  
2020 ◽  
pp. 1-13
Author(s):  
Yang Mei

Because the teaching methods of Chinese teaching in higher vocational colleges are improper and the problems in the teaching process cannot be found in time, the teaching effect is not good and there are many difficulties in the teaching process of teachers. According to actual needs, based on complex evolution and improved neural network algorithms, this paper builds a Chinese online teaching system in high vocational colleges. After communication with users and social research, the model function module is determined, and the system performance is improved through the mapping optimization model to eliminate data transmission problems in the system operation, and the realization process of the system function module is shown in the form of a diagram. In addition, this paper designs a control experiment to verify the performance of the model and uses the traditional algorithm model as a control to start the test teaching and uses statistical methods to compare the teaching effects. The research results show that the teaching system constructed in this paper has certain advantages over the traditional model.


2021 ◽  
Vol 7 (5) ◽  
pp. 3076-3086
Author(s):  
Zhang Shuili ◽  
Zhao Yi ◽  
Zheng Kexin ◽  
Zhang Jun ◽  
Zheng Fuchun

Objectives: In view of the characteristics of online teaching during the coronavirus pandemic and the importance of practical teaching in training students’ skills in the process of graduate education, this paper proposes an online scene teaching mode that takes projects as the carrier and integrates with deep learning. In order to meet the demand for information and communication engineering professionals in the big data context, the whole teaching process is divided into four stages: Topic selection, Teaching project setting, online teaching interaction and teaching evaluation. In the teaching process of Python Data Analysis Foundations, the project “establishment process of tobacco picking decision tree based on information gain” is taken as the teaching case. Prior knowledge and references are pushed through the cloud platform before class, and The scene of tobacco picking affected by the weather is set in the online classroom to guide students to seek solutions to problems, and the results are presented with graphics to assist students to summarize, and then reset the scene to promote knowledge transfer, so as to integrate deep learning into the teaching process, and modify the corresponding stages according to the teaching evaluation results. The content of the scene is gradually increased from easy to difficult, from simple to complex, and from least to most, gradually increasing the difficulty, which enhances students’ learning interest and sense of achievement. Meanwhile, students’ initiative to participate in curriculum research further strengthens the effectiveness of the course in serving scientific research, which has a certain value of popularization and application.


Author(s):  
Renata Jukić ◽  
Marija Sablić ◽  
Sara Kakuk

2016 ◽  
Vol 147 ◽  
pp. 613-617
Author(s):  
Gerrit Thiele ◽  
Patricia Kafka ◽  
Stefan Litzenberger ◽  
Anton Sabo
Keyword(s):  

2003 ◽  
Vol 150 (4) ◽  
pp. 458-464 ◽  
Author(s):  
Jean-Sébastien Blouin ◽  
Martin Descarreaux ◽  
Ariane Bélanger-Gravel ◽  
Martin Simoneau ◽  
Normand Teasdale

2021 ◽  
Author(s):  
Marija Raković ◽  

The paper deals with the observation of the specifics of online teaching of lexicology and syntax of the Serbian language at the Faculty of Philology of students studying a foreign language. The aim is to notice possibilities of realization of online teaching. The research was conducted on the basis of the implementation of the teaching process in the subject Serbian language 2 (lexicology and syntax) and a survey of students on the advantages and disadvantages of online teaching. The analysis showed that online teaching provides shortcomings in the form of insufficient time for the teacher to deal in more detail with student ambiguities, but also provides numerous opportunities for progress in education – mostly in terms of student time organization and uninterrupted questioning, which is not always the case. Based on the obtained results, we will try to give methodological implications for teaching practice, which concern the possibility of improving online teaching of the Serbian language at the university level.


2020 ◽  
Vol 91 (1) ◽  
pp. 26-31 ◽  
Author(s):  
Roope Sovelius ◽  
Maunu Mäntylä ◽  
Heini Huhtala ◽  
Juha Oksa ◽  
Rasmus Valtonen ◽  
...  

BACKGROUND: The aim of the study was to determine the characteristics of cervical muscle activity in different head movements when using helmet mounted display in air combat maneuvering.METHODS: Cervical EMG was measured with eight F/A-18 pilots using the Joint Helmet Mounted Cueing System (JHMCS) during air combat maneuvering. In-flight Gz acceleration and continuous head position were recorded. Muscular activity was compared between head movements in isolation and combined with torso movement. In addition, the effect of the direction of head movements and the use of head support of the ejection seat on muscle activity was determined.RESULTS: Muscular loading increased in the cervical flexors and extensors when using the torso during targeting beyond the field of vision in the neutral sitting posture; the difference was significant in the flexors, but activity levels were higher in the extensors. Cervical muscles are loaded to a lesser extent if the head is kept in a stable position during Gz loading. Muscular activity in the neck muscles was higher when the pilot was moving the head out of neutral posture rather than toward neutral posture. The use of the headrest as a support decreased muscle activity in the extensors, but resulted in higher activity in the flexor muscles.DISCUSSION: All analyzed conditions were significantly affected by an increase in Gz. An increase of muscle activity with torso movements is considered as a positive factor as it reflects maintained muscular support for the cervical spine. Presented results may be helpful when specific conditioning programs and cockpit ergonomics are developed for fighter pilots.Sovelius R, Mäntylä M, Huhtala H, Oksa J, Valtonen R, Tiitola L, Leino T. Head movements and neck muscle activity during air combat maneuvering. Aerosp Med Hum Perform. 2020; 91(1):26–31.


2020 ◽  
Vol 47 (4) ◽  
pp. 432-440 ◽  
Author(s):  
Simone Gouw ◽  
Angela Frowein ◽  
Carlijn Braem ◽  
Anton Wijer ◽  
Nico H. J. Creugers ◽  
...  

Author(s):  
Frank Lobbezoo ◽  
Marc Thu Thon ◽  
Guy Rémillard ◽  
Jacques Y. Montplaisir ◽  
Gilles J. Lavigne

AbstractObjective: The interactions between sleep, neck muscle activity, and cervical spinal pain were examined in a controlled study with nine patients suffering from idiopathic cervical dystonia (ICD; also referred to as spasmodic torticollis), and nine gender- and age-matched controls. Methods: From each participant, two all-night polysomnograms with additional electromyographic recordings from the sternocleidomastoid and upper trapezius muscles were obtained. The first night was for habituation to the laboratory environment; the second night for experimental data collection. Visual analogue scales were used to collect intensity and unpleasantness ratings of cervical spinal pain before and after the second sleep recording. Results: None of the standard sleep variables showed statistically significant differences between average values of both groups of participants. However, a significantly larger variance in sleep latency was obtained for the ICD patients. In general, abnormal cervical muscle activity decreased immediately when lying down without the intention to go to sleep. Subsequently, abnormal muscle contractions were gradually abolished in all ICD patients during the transition from relaxed wakefulness to light NREM sleep. Following this transition phase, no more abnormal EMG activity was found in any of our patients. Finally, cervical spinal pain intensity and unpleasantness were reduced by about 50% overnight. Conclusions: Both supine position and sleep can be associated with an improvement of symptoms of ICD, and this disorder does not induce any sleep perturbations.


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