scholarly journals Evaluation of a Computer Vision-Based System to Analyse Behavioral Changes in High School Classrooms

2021 ◽  
Vol 17 (4) ◽  
pp. 1-12
Author(s):  
Hyungsook Kim ◽  
David O'Sullivan ◽  
Ksenia Kolykhalova ◽  
Antonio Camurri ◽  
Yonghyun Park
Keyword(s):  
High School ◽  
Computer Vision ◽  
High School Students ◽  
Behavioral Changes ◽  
Left Shoulder ◽  
Second Phase ◽  
Classroom Setting ◽  
Neck Flexion ◽  
School Students ◽  
Two Phases

The objectives of this study were to investigate the feasibility of applying computer vision techniques and to analyse changes in behaviour and movement of high school students during class. The study is performed over two phases. Phase one focuses on developing a feasible method to use computer vision-based techniques in high school classes and phase two focuses on the testing of aromatherapy to affect student’s movement. All camera data was processed and analysed by OpenPose, Matlab and EyesWeb. Movement features such as velocity, acceleration, and kinetic energy and postural variables, spinal extension and neck flexion were calculated. Results of phase one, shows significant differences in the overall segment velocity, acceleration, energy, and neck flexion. Similarly, the second phase shows significant differences in velocity, acceleration and jerk for the left shoulder and elbow joints of the group exposed to aroma. In conclusion, the results show the feasibility of using computer vision techniques to apply in a classroom setting.

scholarly journals EVALUATION OF A COMPUTER VISION-BASED SYSTEM TO ANALYSE BEHAVIORAL CHANGES IN HIGH SCHOOL CLASSROOMS

2021 ◽  
Vol 17 (4) ◽  
pp. 0-0
Keyword(s):  
High School ◽  
Computer Vision ◽  
High School Students ◽  
Behavioral Changes ◽  
Left Shoulder ◽  
Second Phase ◽  
Classroom Setting ◽  
Neck Flexion ◽  
School Students ◽  
Two Phases

The objectives of this study were to investigate the feasibility of applying computer vision techniques and to analyse changes in behaviour and movement of high school students during class. The study is performed over two phases. Phase one focuses on developing a feasible method to use computer vision-based techniques in high school classes and phase two focuses on the testing of aromatherapy to affect student’s movement. All camera data was processed and analysed by OpenPose, Matlab and EyesWeb. Movement features such as velocity, acceleration, and kinetic energy and postural variables, spinal extension and neck flexion were calculated. Results of phase one, shows significant differences in the overall segment velocity, acceleration, energy, and neck flexion. Similarly, the second phase shows significant differences in velocity, acceleration and jerk for the left shoulder and elbow joints of the group exposed to aroma. In conclusion, the results show the feasibility of using computer vision techniques to apply in a classroom setting.

scholarly journals ANTISIPASI DIDAKTIS BERSTRUKTUR KONFLIK KOGNITIF UNTUK MENGATASI HAMBATAN BELAJAR SISWA DALAM MATERI PENJUMLAHAN DAN PENGURANGAN BILANGAN BULAT

2020 ◽  
Vol 1 (1) ◽  
pp. 35
Author(s):  
Yanti Ngudi Lestari ◽  
Sugiatno Sugiatno ◽  
Agung Hartoyo
Keyword(s):  
High School ◽  
High School Students ◽  
Junior High School ◽  
Junior High ◽  
Cognitive Conflict ◽  
Junior High School Students ◽  
School Students ◽  
Addition And Subtraction ◽  
Two Phases

This research was backgrounded by the difficulties experienced by junior high school students in understanding the addition and subtraction of integers material. One action chosen to overcome this problem was by designing a didactic anticipation with the cognitive conflict structure. The subjects of this research were the class VII students of SMPN 4 Sungai Pinyuh, of which 5 students were randomly taken as the sample. This research was conducted in two phases, preceded by the pretest to find out the initial difficulties faced by students, followed by intervention in the form of cognitive conflict anticipation, and the posttest to determine whether the designed strategy can reduce the difficulties faced by the students. The results showed that the didactic anticipation with the cognitive conflict structure could facilitate students in understanding the addition and subtraction of integers material.Keywors: Didactic anticipation, Learning obstacles

scholarly journals Differentiation of Test Items between The High School Biology Olimpiad in North Kayong and The National Science Olimpiad

2017 ◽  
Vol 6 (2) ◽  
pp. 245
Author(s):  
R. Marlina ◽  
H. Puspaningrum ◽  
H. Hamdani
Keyword(s):  
High School ◽  
High School Students ◽  
Science Teachers ◽  
High School Biology ◽  
School Students ◽  
Biology Teachers ◽  
Test Items ◽  
National Science ◽  
Two Phases ◽  
Preliminary Phase

<p>The purpose of this research is to find out the differentiation between high school biology olympiad in the District of North Kayong and the National Biology Olympiad. The analysis is used to provide feedback to students regarding their knowledge in the forms of factual, conceptual, procedural, and metacognitive traits. This research is a descriptive study consisting of two phases: the stage of designing test items carried out by four Biology teachers who joined the group, Science Teachers Council, and the test tryout phase given to 33 high school students of class XI. This research resulted in the dimensions of knowledge which indicates that there are 79% (63 items) being in the dimension of the factual, as much as 15% (12 items) in the conceptual, as much as 6% (5 items) in the procedural, while the metacognitive dimension is 0%. The question package which was given in the preliminary phase test was 5% considered difficult, while in the final stage such difficulty was not found (0%). Therefore, it is concluded that the question items need to be revised because they have differentiation between high school biology olympiad in the District of North Kayong and the National Biology Olympiad.</p>

scholarly journals Dynamic changes in anxiety level before and after reading and watching different types of online articles and videos respectively: A Pilot Study

2021 ◽  
Author(s):  
Sizhe Zhou ◽  
Keying Liu
Keyword(s):  
High School Students ◽  
Dynamic Effect ◽  
Anxiety Level ◽  
Second Phase ◽  
School Students ◽  
Before And After ◽  
Anxiety Levels ◽  
Two Phases ◽  
Ecological Momentary

In recent years, researchers studying anxiety in high school students have determined that therapeutic videos and articles are effective as auxiliary intervention methods, but the specific types of videos or articles that are most effective still remain unclear. Current research has focused on the dynamic effect of various types of videos or articles on adolescents' anxiety levels, with the aim of finding suitable types of videos or articles to be used as materials during interventions. The study is divided into two phases. In the first phase of the study, a questionnaire was distributed to a total of 2120 participants from China regarding their anxiety level and their preferred materials during online surfing, The results indicate that five types of materials were related to adolescents’ anxiety levels. In the second phase of the study, Ecological Momentary Assessment was used to continuously measure 30 participants’ anxiety levels over the course of ten days. The results show that while scenic video, online fiction, classic literature, and literature criticism affected an individual’s emotions positively. There was no significant effect when entertainment videos were used. In addition, only scenic videos were able to alleviate anxiety in the long-term.

scholarly journals PEMERIKSAAN POSTUR TERHADAP PENGGUNAAN BEBAN BERLEBIH PADA TAS SISWA SMA NEGERI 1 PEMULUTAN BARA

Khidmah ◽  
2019 ◽  
Vol 1 (1) ◽  
pp. 1-6
Author(s):  
Imam Haryoko ◽  
Dwi Herdayanti
Keyword(s):  
High School ◽  
High School Students ◽  
Elementary School Students ◽  
Community Service ◽  
Musculoskeletal Disorder ◽  
Left Shoulder ◽  
Initial Symptom ◽  
School Students ◽  
Body Postures ◽  
The Past

Seiring perkembangan berbagai metode pendidikan di Indonesia secara tidak langsung menimbulkan berbagai masalah kesehatan bagi siswa siswi sekolah, khususnya siswa Sekolah Menengah Atas (SMA) hal ini akan berdampak kepada bertambah beratnya beban yang dibawa didalam tas siswa SMA. Namun beragamnya jenis tas yang digunakan oleh siswa SMA dapat menyebabkan ketidakseimbangan distribusi beban yang diterima oleh tubuh siswa bahkan menyebabkan timbulkan berbagai gangguan musculoskeletal yang berujung kepada perubahan dari postur tubuh yang seringkali tidak terindentifikasi. Tujuan pengabdian masyarakat ini bertujuan untuk mengidentifikasi adanya perubahan postur siswa SMA Negeri 1 Pemulutan barat akibat beban berlebih. Pelaksanaan survei dilakukan dengan melakukan penimbangan tas punggung siswa sekolah dasar, mengukur berat badan, dan ditanyakan dengan kuesioner apakah siswa tersebut mengalami nyeri punggung dengan sebab non traumatik dan kelainan fisik seminggu terakhir lalu mengukur postur siswa menggunakan posture chart zone. Hasil pemeriksaan didapatkan 3 dari 25 sample ditemukan memiliki perbedaan tinggi bahu kanan dan kiri. Hal tersebut merupakan gejala awal dari gangguan muskuloskeletal berupa deviasi postural. Kesimpulan Adanya perubahan postur pada 12 % siswa SMA Negeri 1 Pemulutan Barat. As the development of various methods of education in Indonesia indirectly raises a variety of health problems for school students, especially high school students, this will have an impact on increasing the weight carried in the bag of high school students. The variety of types of bags used by high school students can cause an imbalance in the distribution of the load received by the student's body and even cause various musculoskeletal disorders which lead to changes in body postures that are often not identified. This community service aims to identify changes in the posture of the students of West Pelangi 1 High School due to excessive burden. Method : The survey was conducted by weighing backpacks of elementary school students, measure weight, and be asked with questionnaire whether the student has back pain due to non traumatic and physical abnormalities in the past week and then measuring the posture of students using posture chart zone. Results : There were 3 out of 25 samples found to have differences in right and left shoulder height. This is the initial symptom of a musculoskeletal disorder in the form of postural deviation. Conclusion ,There is a change in posture in 12% of students of West Smear 1 High School.

scholarly journals Morphological Awareness Instruction for ESL Students’ Vocabulary Development and Reading Comprehension

2021 ◽  
Vol 8 (1) ◽  
pp. 41
Author(s):  
Aletheia Ajeng Priskinanda ◽  
Yulius Nahak ◽  
Teofanne Nurinik Wea ◽  
Barli Bram
Keyword(s):  
High School ◽  
Reading Comprehension ◽  
High School Students ◽  
Morphological Awareness ◽  
Senior High School ◽  
Esl Students ◽  
School Students ◽  
Data Set ◽  
Vocabulary Skills ◽  
Two Phases

This article aimed to investigate the ESL Senior High School student’s perception of Morphological Awareness Instruction and the students’ vocabulary and the significant differences of students who are trained using Morphological Awareness Instruction to enhance their reading comprehension. Two research questions were formulated, namely: First, how are the ESL Senior High School students’ understanding of the application of morphological awareness instruction to enhance their vocabulary and reading comprehension. Secondly, what are the differences of students who are trained using Morphological Awareness Instruction to enhance their vocabulary and reading comprehension with those who are not? To answer these questions, an experimental research method was implemented. The research sample consisted of 60 students of a Senior High School in Pleret, Bantul, Yogyakarta, who were selected using two phases of random sampling. The data set of questionnaires and tests were used to collect the data. The independent sample t-test was used to analyze the data. The results showed that the Morphological Awareness Instruction significantly improved students’ vocabulary skills and their reading comprehension.    

Effect of Smartphone Output Power on the Undetermined Headache among High School Students: Time-Series Study

2020 ◽  
Vol 103 (5) ◽  
pp. 415-422
Keyword(s):  
High School ◽  
High School Students ◽  
Sleep Quality ◽  
Mobile Phone ◽  
Output Power ◽  
Demographic Data ◽  
Smartphone Application ◽  
Second Phase ◽  
School Students ◽  
Smartphone Use

Background: The undetermined headache, which is not classified as a primary headache, might be a mobile phone associated headache (MPAH). Objective: To investigate the smartphone electromagnetic radiation related to undetermined headaches among high school students. Materials and Methods: One hundred forty-five high school students in the Chiang Mai Province completed a headache diary according to the International Classification of Headache Disorders version 3 beta criteria. It was scored according to the diagnosis algorithm. The smartphone output power (SOP) as measured and recorded by the smartphone application was saved every five minutes and transmitted by email. The completed data included 12,969 entries. The smartphone use, sleep quality, anxiety, and depression were also assessed. Data were analyzed using the Generalized Estimating Equation adjusted for demographic data, smartphone use, and sleep quality, and other. Results: Most students were female 74.7% with a mean age of 17.63±1.01 years (range 16 to 20). The one-year headache prevalence was 92.6% (95% CI 90.8 to 94.1) with undetermined headaches at 18.7% and 16.9% in the first and second phase, respectively. Characteristically, the prevalence of MPAH was higher in the nature of short duration pain, pulsing and tightening, indefinite form of pain, pain occurring in the morning, one side headache at occipital or frontal areas, and low pain severity (p<0.05). The results revealed the strongest effect of SOP at 1.80×10⁻⁵ to 1.99×10⁻⁵ mW range on the undetermined headaches with ORadj 2.32; 95% CI 1.23 to 4.34. Furthermore, the undetermined headaches also had the strongest association with handfree use and internet use (ORadj 1.92; 95% CI 1.11 to 3.29 and ORadj 2.33; 95% CI 1.71 to 3.19, respectively), age, and anxiety (ORadj 1.49; 95% CI 1.26 to 1.76 and ORadj 1.12; 95% CI 1.07 to 1.17, respectively). Conclusion: The undetermined headache associated with SOP, which was a MPAH. These results suggest that an older age for starting smartphone use and utilizing a hand-free device were recommended to prevent chronic headaches. Keywords: Smartphone output power, Undetermined headache, Mobile phone associated headache

Correlation between the exposure time to mobile devices and the prevalence of evaporative dry eyes as one of the symptoms of computer vision syndrome among Senior High School students in East Java, Indonesia

2021 ◽  
Vol 32 (4) ◽  
pp. 541-545
Author(s):  
Rozalina Loebis ◽  
Bambang Subakti Zulkarnain ◽  
Nadhifa Zahra
Keyword(s):  
High School ◽  
Computer Vision ◽  
High School Students ◽  
Mobile Devices ◽  
Exposure Time ◽  
Young Age ◽  
School Students ◽  
Dry Eyes ◽  
Computer Vision Syndrome ◽  
Chi Square Analysis

Abstract Objectives Computer vision syndrome (CVS) is a group of various eye and vision-related problems from prolonged use of mobile devices. Symptoms include dry eyes, blurred vision, eye strain, headache, and also neck and shoulder pain. This study was carried out to analyze the correlation between the exposure time of High Energy Visible (HEV) from mobile devices’ use and the prevalence of evaporative dry eyes in young age. Methods An observational cross-sectional study was done using quota sampling method for 100 High School students. Data collection was performed using questionnaire to identify daily use of mobile devices (hours) and duration for using mobile devices (years). A classification was determined as mild, moderate, and heavy HEV exposure. Evaporative dry eyes were diagnosed using tear break-up time test (TBUT) of less than 10 s for both eyes. Results Ninety-four students participated in this study. A total of 82 students (87.2%) experienced evaporative dry eyes. There were 11 students (11.7%) who had dry eyes with mild exposure, 18 students (19.1%) had dry eyes with moderate exposure, and 53 students (56.4%) had dry eyes with heavy exposure. A chi square analysis showed all HEV exposures have similar risk to the prevalence of dry eyes among High School students (p<0.05). Conclusions The risk of developing evaporative dry eyes, as one of the symptoms of CVS in young age with normal tear production, could be induced even with minimal exposure to mobile devices.

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