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Zawacki, Emily E., Wendy Bohon, Scott Johnson und Donna J. Charlevoix. „Exploring TikTok as a promising platform for geoscience communication“. Geoscience Communication 5, Nr. 4 (23.11.2022): 363–80. http://dx.doi.org/10.5194/gc-5-363-2022.
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Abstract. With TikTok emerging as one of the most popular social media platforms, there is significant potential for science communicators to capitalize on this success and to share their science with a broad, engaged audience. While videos of chemistry and physics experiments are prominent among educational science content on TikTok, videos related to the geosciences are comparatively lacking, as is an analysis of what types of geoscience videos perform well on TikTok. To increase the visibility of the geosciences and geophysics on TikTok and to determine best strategies for geoscience communication on the app, we created a TikTok account called “Terra Explore” (@TerraExplore). The Terra Explore account is a joint effort between science communication specialists at UNAVCO, IRIS (Incorporated Research Institutions for Seismology), and OpenTopography. We produced 48 educational geoscience videos over a 4-month period between October 2021 and February 2022. We evaluated the performance of each video based on its reach, engagement, and average view duration to determine the qualities of a successful video. Our video topics primarily focused on seismology, earthquakes, topography, lidar (light detection and ranging), and GPS (Global Positioning System), in alignment with our organizational missions. Over this time period, our videos garnered over 2 million total views, and our account gained over 12 000 followers. The videos that received the most views received nearly all (∼ 97 %) of their views from the For You page, TikTok's algorithmic recommendation feed. We found that short videos (< 30 s) had a high average view duration, but longer videos (> 60 s) had the highest engagement rates. Lecture-style videos that were approximately 60 s in length had more success in both reach and engagement. Our videos that received the highest number of views featured content that was related to a recent newsworthy event (e.g., an earthquake) or that explained location-based geology of a recognizable area. Our results highlight the algorithm-driven nature of TikTok, which results in a low barrier to entry and success for new science communication creators.
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Damayanti, Ika Lestari, Iyen Nurlaelawati, Lulu Laela Amalia, Nindya Soraya Dharma und Sri Ratnaningsih. „DUET THIS: STORYTELLING THROUGH SOCIAL MEDIA VIDEO FOR TEACHING ENGLISH“. English Review: Journal of English Education 11, Nr. 3 (27.10.2023): 599–608. http://dx.doi.org/10.25134/erjee.v11i3.7706.
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This case study aimed to investigate the use of the social media video application, TikTok, to support ten EFL teachers in Indonesia to develop videos for storytelling with their students. During the emergency remote teaching, these teachers found difficulty in designing learning materials easy to share on various online platforms. In this study, a two-week training program consisting of face-to-face and online sessions was conducted to facilitate the teachers to explore TikTok affordances and tell stories in the form of TikTok’s Duet. The data were collected from TikTok videos produced during the program and the teachers’ pre- and post-training reflective notes. The findings show the teachers’ shifted view of TikTok as non-educational entertainment to an educational platform that could facilitate interactive and interesting storytelling with students. The teachers were aware that while the short duration of the TikTok video was beneficial for easy sharing and engagement with students, it affected the length of the unfolding stages of the story. In creating a TikTok video for storytelling, the teachers found modifying original stories into a one-minute interactive video challenging. More support is thus required to provide teachers with pedagogical, technological, and language content knowledge that allows them to develop teaching resources relevant to their student’s language learning needs and social and economic backgrounds.
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Zhang, Wei, Jie Mei, Weifang Song, Richard Evans und Yaqian Xiang. „Why Do Citizens Engage With the TikTok Accounts of Public Hospitals in China?“ SAGE Open 11, Nr. 4 (Oktober 2021): 215824402110615. http://dx.doi.org/10.1177/21582440211061568.
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Chinese public hospitals have increased usage of TikTok to communicate with citizens on health-related matters. This study aims to investigate the engagement of citizens with the official TikTok accounts of public hospitals, and identify the major characters of the videos with the highest public engagement level, as well as underlying factors that make them successful. A comprehensive search on TikTok, a video-sharing social networking service, was completed to identify all official accounts of public hospitals in Mainland China. Data was collected from 40 public hospitals with the top 100 TikTok videos being identified for content analysis. The majority of them were created by public hospitals located in the Central and Western regions of China. The common features of the top 100 identified videos include: low message sensation value and short video length, and are typically accompanied by background music, subtitles, and an introduction at the beginning of the video. The most frequently viewed video type is film clips which are used to disseminate knowledge of diseases and promote healthcare professionals. Health communication via the official TikTok accounts of public hospitals in China offers significant potential. Hospitals are encouraged to engage citizens in health-related conversations to build their credibility and professional image online. Among the popular short-videos, the message sensation value is not largely connected to video popularity, while the content of videos seems more important. This requires skills in video creation or procurement, and editing, while rhetoric should be cautiously applied. The content of videos should provide education and positive energy.
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Matthew, Matthew, und Theresia Lavietha Vivrie Lolita. „TikTok and B2B Branding: A Creative Approach to Video Marketing Insights from a Digital Agency Study“. Jurnal Ilmu Komunikasi dan Bisnis 9, Nr. 2 (24.04.2024): 147–64. http://dx.doi.org/10.36914/jikb.v9i2.1078.
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The rapid development of technology and severe contention among businesses urge business-to-business (B2B) organizations to address this by presenting company values through short video marketing on innovative social media platforms. This research aims to discover how B2B companies—in this case, a TikTok Indonesia Partner Award for a creative digital marketing agency—build brand awareness through video marketing strategies on TikTok. This study employed a qualitative descriptive method and approach by collecting interview data with the managers responsible for content creation, optimal strategy creation handling, and social media activation of the TikTok account (“@doxadigital”). From the point of view of the video marketing concept, the study shows that the company used video marketing in a planned and appropriate way at all stages, including planning, production, and activation. This was based on the idea of a video marketing strategy. The study also shows that B2B companies that use video marketing do best when they get paid views. However, more research is needed to determine how B2B companies define themselves by optimizing different parts of their content and changing how they connect with stakeholders in the digital communication generation. Abstrak Dalam konteks persaingan bisnis yang semakin intensif dan kemajuan teknologi yang cepat, organisasi bisnis-ke-bisnis (B2B) dituntut untuk proaktif dalam mempromosikan nilai-nilai perusahaan melalui strategi pemasaran video singkat di platform media sosial inovatif. Penelitian ini bertujuan untuk mengungkap bagaimana perusahaan B2B—khususnya, penerima Penghargaan Mitra TikTok Indonesia dari sektor agensi pemasaran digital kreatif—mengembangkan kesadaran merek melalui strategi pemasaran video di TikTok. Dengan menerapkan pendekatan deskriptif kualitatif, penelitian ini mengumpulkan data melalui wawancara dengan manajer yang memiliki tanggung jawab dalam kreasi konten, pengelolaan strategi optimal, dan aktivasi media sosial pada akun TikTok “@doxadigital”. Melalui lensa kerangka kerja pemasaran video, hasil studi menunjukkan bahwa perusahaan telah menerapkan pemasaran video secara terencana dan tepat pada setiap tahapan, mulai dari perencanaan, produksi, hingga aktivasi, sesuai dengan prinsip strategi pemasaran video. Studi ini juga menemukan bahwa perusahaan B2B yang memanfaatkan pemasaran video mendapatkan hasil terbaik ketika mengimplementasikan tayangan berbayar. Namun, penelitian lebih lanjut diperlukan untuk mengeksplorasi bagaimana perusahaan B2B mendefinisikan identitas mereka dengan mengoptimalkan berbagai aspek konten dan mengubah cara interaksi dengan pemangku kepentingan di era komunikasi digital saat ini.
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Puspitasari, Nita, und Desy Mardhiah. „Makna Denotatif dan Konotatif Pulang Kampung oleh Pemudik (Kajian Semiotika Roland Barthes terhadap TikTok Dwiki Afrilian)“. Jurnal Perspektif 6, Nr. 4 (27.11.2023): 362–71. http://dx.doi.org/10.24036/perspektif.v6i4.834.
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Penelitian ini bertujuan untuk menjelaskan makna denotatif dan konotatif pulang kampung oleh pemudik. Penelitian ini menarik diteliti karena terdapat makna yang terkandung dibalik ide kreatif video Dwiki Afrilian yang memenangkan penghargaan TikTok kategori Best of Comedy dan membuat konten video yang menggambarkan reailta kehidupan sehari-hari yang dibaluti komedi sehingga penonton tidak hanya menangkapnya sebagai cerita hiburan saja. Teori yang digunakan dalam penelitian yaitu semiotika oleh Roland Barthes. Penelitian ini menggunakan metode kualitatif interpretif dengan menggunakan analisis semiotika Roland Barthes. Teknik analisis data yang digunakan yaitu Miles dan Huberman (1992) antara lain pengumpulan data, reduksi data, penyajian data dan penarikan kesimpulan. Pengumpulan data dilakukan dengan cara obsevasi dengan mengamati video dan mengidentifikasi tanda yang terdapat pada scene yang ada dan tinjauan pustaka. Hasil dari penelitian ini menjelaskan bahwa pertama, makna denotasi yang terdapat dalam video TikTok “Suasana subuh pas lagi mudik ke kampung” adalah pengambaran aktivitas-aktivitas kehidupan yang sederhana dan alami di pedesaan. Kedua, makna konotasi pulang kampung yang terdapat dalam video tersebut menunjukkan bagaimana interaksi yang dilakukan oleh pemudik. Ketiga, berkumpul dengan keluarga, merayakan lebaran di pulang kampung memberikan kesempatan bagi pemudik untuk berkumpul kembali dengan keluarga mereka.
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Li, Yixuan. „A Study on the Success of Short Videos Themed on Beijing Cuisines and Its Influence on the City’s Image“. SHS Web of Conferences 155 (2023): 02010. http://dx.doi.org/10.1051/shsconf/202315502010.
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With the boom of the short video industry in recent years, cities with tremendous internet influences have witnessed rapid growth attributable to the rise of short video platforms where cuisinethemed short videos have become a new channel for the communication of a city’s image. On one of the platforms, TikTok, there exists a huge gap in terms of communication performance among cuisine-themed short videos of different kinds. Taking content analysis as the tool, this paper is engaged with the quantitative analysis of the content characteristics, food types, city image, video length and language characteristics of the short videos themed on Beijing cuisines that go viral on the Internet with the coded information extracted from the top 30 related short videos with most likes published on TikTok, so as to investigate their commonalities and shared features. An in-depth analysis is provided as the result with specific cases taken into account to propose for the production and communication of similar videos and to provide certain references for the construction and communication of the image of corresponding cities.
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Zhao, Jiayu. „Research on TikToks Development Strategy in the Context of the Internet Celebrity Economy: Case Analysis Based on the SWOT Analysis Method“. Advances in Economics, Management and Political Sciences 16, Nr. 1 (13.09.2023): 154–60. http://dx.doi.org/10.54254/2754-1169/16/20230996.
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Mobile short videos are developing rapidly in the market with a powerful attitude under the background of the rapid development of digital, network, and mobile technologies. Especially since the outbreak of the epidemic in the past two years, netizens have been isolated at home. TikToks simple operation steps provide a broad space for the development of mobile short videos. Our country has gradually realized the popularization of TikTok. As a short video platform with the largest number of users and the best development in China, TikTok APP can represent the development level of China's new media field to a certain extent. Based on the SWOT analysis method, this paper studies TikTok from the four aspects of strengths, weaknesses, opportunities, and threats, and, combined with the conclusion, put forward rich policy recommendations with certain practical significance.
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Wang, Xiuqi, Chuikwan Wong, Zhenglei Zhang und Zhuohang Zou. „Impact of International News Narrative Approaches on the Attitude Discrepancy among TikTok Users --A Case Study of TikTok Comments on the Assassination of Shinzo Abe“. Lecture Notes in Education Psychology and Public Media 4, Nr. 1 (17.05.2023): 931–39. http://dx.doi.org/10.54254/2753-7048/4/2022626.
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Under the background of globalization, diversified narrative approaches have been increasingly adopted in international news reports in the context of new media, leading to varying degrees of influence on the audiences opinion. In virtue of their fast-paced, penetrative and fragmented contents, short video communication platforms, represented by TikTok, cater to peoples reading needs in the rush of modern life. They are also found to differ from traditional media in the reporting and dissemination of major news events. On July 8, 2022, Shinzo Abe, former Prime Minister of Japan and a current member of the House of Representatives, was shot and killed during his street speech in Nara City, Nara Prefecture. After the incident, many relevant news reports and short videos emerged on the platform of TikTok, with different emotional attitudes highly perceivable from users comments. Based on the Theory of News Narratology, this article collects and encodes first-hand data from 100 short videos with the largest number of likes after July 8 and 9 on the short video platform of TikTok, such as video length, release time, video presentation mode, narrative approach and music style, and explores the impact of different narrative approaches and elements in international news reports on the attitude and behavioral orientation of Internet users using the method of content analysis. The results of comparative analysis show that the audiences comment tone is relatively flat under the sad style of music and the short news videos with low timeliness; the narrative approach of incorporating subjective comments and human participation into short videos is conducive to the rational return of public opinion.
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Chen, Qiang, Chen Min, Wei Zhang, Xiaoyue Ma und Richard Evans. „Factors Driving Citizen Engagement With Government TikTok Accounts During the COVID-19 Pandemic: Model Development and Analysis“. Journal of Medical Internet Research 23, Nr. 2 (04.02.2021): e21463. http://dx.doi.org/10.2196/21463.
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Background During the COVID-19 pandemic, growth in citizen engagement with social media platforms has enabled public health departments to accelerate and improve health information dissemination, developing transparency and trust between governments and citizens. In light of these benefits, it is imperative to learn the antecedents and underlying mechanisms for this to maintain and enhance engagement. Objective The aim of this study is to determine the factors and influencing mechanisms related to citizen engagement with the TikTok account of the National Health Commission of China during the COVID-19 pandemic. Methods Using a web crawler, 355 short videos were collected from the Healthy China account on TikTok (with more than 3 million followers throughout China), covering the period from January 21, 2020, to April 25, 2020. The title and video length, as well as the number of likes, shares, and comments were collected for each video. After classifying them using content analysis, a series of negative binomial regression analyses were completed. Results Among the 355 videos, 154 (43.4%) related to guidance for clinicians, patients, and ordinary citizens, followed by information concerning the government’s handling of the pandemic (n=100, 28.2%), the latest news about COVID-19 (n=61, 17.2%), and appreciation toward frontline emergency services (n=40, 11.3%). Video length, titles, dialogic loop, and content type all influenced the level of citizen engagement. Specifically, video length was negatively associated with the number of likes (incidence rate ratio [IRR]=0.19, P<.001) and comments (IRR=0.39, P<.001). Title length was positively related to the number of shares (IRR=24.25, P=.01), likes (IRR=8.50, P=.03), and comments (IRR=7.85, P=.02). Dialogic loop negatively predicted the number of shares (IRR=0.56, P=.03). In comparison to appreciative information, information about the government’s handling of the situation (IRR=5.16, P<.001) and guidelines information (IRR=7.31, P<.001) were positively correlated with the number of shares, while the latest news was negatively related to the number of likes received (IRR=0.46, P=.004). More importantly, the relationship between predictors and citizen engagement was moderated by the emotional valence of video titles. Longer videos with positive titles received a higher number of likes (IRR=21.72, P=.04) and comments (IRR=10.14, P=.047). Furthermore, for short videos related to government handling of the pandemic (IRR=14.48, P=.04) and guidance for stakeholders (IRR=7.59, P=.04), positive titles received a greater number of shares. Videos related to the latest news (IRR=66.69, P=.04) received more likes if the video title displayed higher levels of positive emotion. Conclusions During the COVID-19 pandemic, videos were frequently published on government social media platforms. Video length, title, dialogic loop, and content type significantly influenced the level of citizen engagement. These relationships were moderated by the emotional valence of the video’s title. Our findings have implications for maintaining and enhancing citizen engagement via government social media.
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G.U., Nwafor, und Nnaemeka F.O. „Uses and Gratifications of TikTok Platform among University Undergraduates“. African Journal of Social Sciences and Humanities Research 6, Nr. 6 (28.12.2023): 139–53. http://dx.doi.org/10.52589/ajsshr-66fabncr.
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Along with the vast development of social media, such as Twitter, Facebook, and YouTube, more new social media platforms such as Tiktok have emerged in the public domain. TikTok, an application that is available for everyone to publish their videos, which length of the video varies from 15 seconds to 1 minute, has been rapidly used to gain popularity and cure boredom especially among teenagers. The videos include daily entertainment, talent shows, and popularization of knowledge and so on. This study therefore evaluated the uses and gratifications of the Tiktok platform by students of Chukwuemeka Odumegwu Ojukwu University. The main objective of the study was to ascertain the frequency of usage and the gratifications students derive from using the Tiktok platform. Anchored on the Uses and Gratifications theory, the study adopted Survey Research method to draw a sample size of 400 from students of Chukwuemeka Odumegwu Ojukwu University, Igbariam Campus using purposive sampling technique and the questionnaire as the instrument for data collection. The study found that there is a high frequency of usage of the Tiktok platform among students of Chukwuemeka Odumegwu Ojukwu University. Learning new things, obtaining leisure and entertainment, expressing themselves freely and also making new friends are some of the gratifications the respondents derive from using the Tiktok platform. The study recommends among others that students should rather utilize the instrumentality of Tiktok for their academic improvement rather than all entertainment.
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Subramanian, Tejas, Kasra Araghi, Izzet Akosman, Olivia Tuma, Amier Hassan, Ali Lahooti, Anthony Pajak et al. „Quality of Spine Surgery Information on Social Media: A DISCERN Analysis of TikTok Videos“. Neurospine 20, Nr. 4 (31.12.2023): 1443–49. http://dx.doi.org/10.14245/ns.2346700.350.
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Objective: The use of social media applications to disseminate information has substantially risen in recent decades. Spine and back pain-related hashtags have garnered several billion views on TikTok. As such, these videos, which share experiences, offer entertainment, and educate users about spinal surgery, have become increasingly influential. Herein, we assess the quality of spine surgery content TikTok from providers and patients.Methods: Fifty hashtags encompassing spine surgery (“#spinalfusion,” “#scoliosissurgery,” and “#spinaldecompression”) were searched using TikTok’s algorithm and included. Two independent reviewers rated the quality of each video via the DISCERN questionnaire. Video metadata (likes, shares, comments, views, length) were all collected; type of content creator (musculoskeletal, layperson) and content category (educational, patient experience, entertainment) were determined.Results: The overall DISCERN score was, on average, 24.4. #Spinalfusion videos demonstrated greater engagement, higher average likes (p = 0.02), and more comments (p < 0.001) compared to #spinaldecompression and #scoliosissurgery. #Spinaldecompression had the highest DISCERN score (p < 0.001), likely explained by the higher percentage of videos that were educational (p < 0.001) and created by musculoskeletal (MSK) professionals (p < 0.001). Compared to laypersons, MSK professionals had significantly higher quality videos (p < 0.001). Similarly, the educational category demonstrated higher quality videos (p < 0.001). Video interaction trended lower with MSK videos and educational videos had the lowest interaction of the content categories (likes: p = 0.023, comments: p = 0.005).Conclusion: The quality of spine surgery videos on TikTok is low. As the influence of the new social media landscape governs how the average person consumes information, MSK providers should participate in disseminating high-quality content.
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Wong, Hoi Pong Nicholas, Lee Jing Yang, Vikneshwaren SO Senthamil Selvan, Jamie Yong Qi Lim, Wei Zheng So, Vineet Gauhar und Ho Yee Tiong. „A Quality and Completeness Assessment of Testicular Cancer Health Information on TikTok“. Société Internationale d’Urologie Journal 5, Nr. 3 (05.06.2024): 182–91. http://dx.doi.org/10.3390/siuj5030028.
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TikTok has become a hub for easily accessible medical information. However, the quality and completeness of this information for testicular cancer has not been examined. Our study aims to assess the quality and completeness of testicular cancer information on TikTok. A search was performed on TikTok using the search terms “Testicular Cancer” and “Testicle Cancer”. Inclusion criteria encompassed videos about testicular cancer in English. We excluded non-English videos, irrelevant videos, and videos without audio. We evaluated these videos using the DISCERN instrument and a completeness assessment. A total of 361 videos were considered for screening and 116 videos were included. Of these, 57 were created by healthcare professionals (HCPs). The median video length was 40 s (5–277 s), with >25 million cumulative views and a median of 446,400 views per video. The average DISCERN score was 29.0 ± 5.7, with HCPs providing higher-quality videos than non-HCPs (30.8 vs. 5.5, p < 0.05). HCPs also had more reliable videos (21.2 vs. 18.1, p < 0.05). Overall quality levels were mostly poor or very poor (97.4%), with none being good or excellent. Most HCP videos were poor (63.2%), whilst many non-HCP videos were very poor (61.0%). The most viewed video had 2,800,000 views but scored a 31 on the DISCERN tool and one on the completeness assessment. The highest DISCERN score had 11,700 views. HCP videos better defined the disease and were more complete (p < 0.05). Most videos discussed self-assessment but were lacking in definitions, risk factors, symptoms, evaluation, management, and outcomes. Most of TikTok’s testicular cancer information lacks quality and completeness, whilst higher-quality videos have limited reach.
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Repetto, Mayra, Anna Horvath, Maggie Sanders, Stephanie Fernandez, Melanie Shackleford und Leanne L. Free. „An Analysis of Discourse Surrounding Oral Contraceptives on TikTok [ID 2683389]“. Obstetrics & Gynecology 143, Nr. 5S (Mai 2024): 1S—2S. http://dx.doi.org/10.1097/01.aog.0001012864.97060.c3.
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INTRODUCTION: The lack of comprehensive sex education in U.S. secondary schools has created large knowledge gaps in reproductive health, leading many adolescents and young adults to turn to social media platforms, such as TikTok, for information about contraception. This cross-sectional study aims to provide a descriptive content analysis of the quality and reliability of oral contraceptive health information on TikTok. METHODS: One thousand TikTok videos listed under various search terms related to oral contraceptives were screened. Data including engagement metrics such as views, likes, comments, saves, and shares were recorded. Video content, including contraceptive methods discussed, efficacy, tolerability, and side effects, was recorded. Two reviewers independently used a modified DISCERN criteria and Global Quality Scale (GQS) to assess the quality and reliability of information for each video. According to the IRB, this project has been approved and exempt from further review. RESULTS: Five hundred seventy-four videos were analyzed after applying exclusion criteria. Videos had a median length of 27 seconds and received a median of 166 views per day. Video creators were 83.3% female and 58.7% White. 49.8% of videos discussed adverse effects, whereas only 27.5% discussed positive effects. The mean modified DISCERN score was 1.63±1.062 and the mean GQS score was 2.28±1.374. Health care professionals had significantly higher DISCERN and GQS scores than non-health care professionals; however, they received fewer views and likes on their videos (P<.001). CONCLUSION: TikTok videos related to oral contraceptive health had low quality and reliability of information. The majority of videos were made by non-health care providers, and the most common topic discussed was adverse effects of contraception. Videos made by health care professionals contained more reliable contraceptive information but received less engagement than videos made by non-health care professionals. Health care providers should consider the prevalence of poor quality information about oral contraceptives on social media when counseling and educating patients about reproductive health.
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Purushothaman, Vidya, Tiana McMann, Matthew Nali, Zhuoran Li, Raphael Cuomo und Tim K. Mackey. „Content Analysis of Nicotine Poisoning (Nic Sick) Videos on TikTok: Retrospective Observational Infodemiology Study“. Journal of Medical Internet Research 24, Nr. 3 (30.03.2022): e34050. http://dx.doi.org/10.2196/34050.
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Background TikTok is a microvideo social media platform currently experiencing rapid growth and with 60% of its monthly users between the ages of 16 and 24 years. Increased exposure to e-cigarette content on social media may influence patterns of use, including the risk of overconsumption and possible nicotine poisoning, when users engage in trending challenges online. However, there is limited research assessing the characteristics of nicotine poisoning–related content posted on social media. Objective We aimed to assess the characteristics of content on TikTok that is associated with a popular nicotine poisoning–related hashtag. Methods We collected TikTok posts associated with the hashtag #nicsick, using a Python programming package (Selenium) and used an inductive coding approach to analyze video content and characteristics of interest. Videos were manually annotated to generate a codebook of the nicotine sickness–related themes. Statistical analysis was used to compare user engagement characteristics and video length in content with and without active nicotine sickness TikTok topics. Results A total of 132 TikTok videos associated with the hashtag #nicsick were manually coded, with 52.3% (69/132) identified as discussing firsthand and secondhand reports of suspected nicotine poisoning symptoms and experiences. More than one-third of nicotine poisoning–related content (26/69, 37.68%) portrayed active vaping by users, which included content with vaping behavior such as vaping tricks and overconsumption, and 43% (30/69) of recorded users self-reported experiencing nicotine sickness, poisoning, or adverse events such as vomiting following nicotine consumption. The average follower count of users posting content related to nicotine sickness was significantly higher than that for users posting content unrelated to nicotine sickness (W=2350.5, P=.03). Conclusions TikTok users openly discuss experiences, both firsthand and secondhand, with nicotine adverse events via the #nicsick hashtag including reports of overconsumption resulting in sickness. These study results suggest that there is a need to assess the utility of digital surveillance on emerging social media platforms for vaping adverse events, particularly on sites popular among youth and young adults. As vaping product use-patterns continue to evolve, digital adverse event detection likely represents an important tool to supplement traditional methods of public health surveillance (such as poison control center prevalence numbers).
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Yang, Shiyun. „The Distinction among China's Internet Platforms: Analysis through Bourdieu's Theory“. Journal of Education, Humanities and Social Sciences 9 (27.03.2023): 144–49. http://dx.doi.org/10.54097/ehss.v9i.6438.
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As long as there is culture, there is a Distinction. The distinction is presented as people from different social classes having a different judgments of taste in art forms such as music, photography, and movies. The Internet has been developed for decades and has formed a rich Internet culture, the newest form of culture; people also have different tastes in it, which is still because they belong to different social classes, comparing the long-length video platform represented by Bilibili and the short-length video platform represented by Tiktok and Kwai, the differences in their user groups are not just a commercial phenomenon. From Bourdieu's perspective, it can be found that each Internet platform has a particular culture corresponding to the tastes of a particular social class, which is a distinction. This article will use Bourdieu's distinction theory to analyze the distinction among China's Internet platforms, which reveals there is a symbolic struggle of social classes on the Internet.
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Shabrina, Almira Shabrina, und Aiza Nabilla Arifputri. „Pelatihan Content Creator Bagi Siswa SMK Telkom Bandung“. BANTENESE : JURNAL PENGABDIAN MASYARAKAT 5, Nr. 1 (02.06.2023): 65–73. http://dx.doi.org/10.30656/ps2pm.v5i1.5928.
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Media sosial menjadi salah satu yang paling penting dampaknya bagi kehidupan manusia. Banyak lowongan pekerjaan baru yang melibatkan sosial media, diantaranya seperti sosial media specialist dan content creator. Dua pekerjaan tersebut menjadi salah satu ‘pekerjaan baru’ karena berkembangnya era digital ini. Pelatihan mengenai bagaimana mengelola sosial media menjadi hal yang bermanfaat kepada siswa-siswi sebagai generasi penerus bangsa sangat dibutuhkan. “Becoming The Best Content Creator” direalisasikan menjadi sebuah pelatihan Pengabdian kepada Masyarakat yang dilakukan di SMK Telkom Bandung. Penulis fokus menyampaikan materi mengenai personal branding agar siswa dan siswi SMK Telkom Bandung memiliki pemahaman media sosial adalah medium yang sangat penting bagi portofolio bakat mereka untuk bekal mencari lowongan pekerjaan kelak setelah siswa-sisiwi lulus sekolah. Dan pengaplikasian difokuskan menggunakan sosial media Instagram dan tiktok. Mengenalkan beberapa karakteristik yang menjadi dasar untuk pembangunan awareness dan engagement pada akun yang mereka kelola. Dengan menggunakan metode workshop, Pengabdian kepada Masyarakat mendapatkan hasil yaitu siswa-siswi lebih memilih tiktok untuk menyebarkan bakat desain, ilustrasi, video pribadi, dan game. Tiktok dianggap sebagai media yang mempermudah penggunanya untuk mengahasilkan pendapatan dan menghasilkan engagement karena karakteristiknya sebagai content delivery berbeda dengan Instagram yang mengedepankan followers untuk mendapatkan awareness.
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Mikaere, Rawiri. „A new chance for online science communication education and learning through TikTok“. International Journal of Clinical Medical Research 2, Nr. 3 (25.05.2024): 91–93. http://dx.doi.org/10.61466/ijcmr2030005.
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<p class="MsoNormal"><span style="font-size: 10.0pt; font-family: 'Arial',sans-serif; mso-ascii-theme-font: minor-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: minor-bidi; mso-bidi-theme-font: minor-bidi;">The COVID-19 pandemic practice of social distancing has led to an increased usage of social media, which has highlighted the importance and potency of social media for effective science communication. As a result, it is now just as crucial to educate and acquire the skills necessary to use social media for science communication in an accurate and efficient manner. In response, we created a task that models and develops 21st century science communication abilities using the social media site TikTok. During the COVID-19 outbreak, TikTok, a platform for sharing short videos, had a dramatic rise in popularity. We demonstrated efficient social media science communication strategies by employing the condensed, targeted video format of TikTok to instruct students in fundamental science ideas and lab procedures. Students were then given the task of practicing excellent science communication at the conclusion of the semester by making their own educational and entertaining TikToks about the research projects that their teams had been working on. Here, we provide our methodology, a number of TikTok best practices, and sample videos made throughout the process for science communication education that are both effective and interesting.</span></p>
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Wang, Chou Chen, Wei Han Chen, Yan Lin Lu und Jia Wei Wu. „Robust Video Transmission for H.264 Scalable Video Coding System over Error-Prone Networks“. Applied Mechanics and Materials 58-60 (Juni 2011): 1554–59. http://dx.doi.org/10.4028/www.scientific.net/amm.58-60.1554.
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In this paper, we develop a novel robust scheme of two-dimensional unequal error protection (2-D UEP) for the H.264 scalable video coding (SVC) with a combined temporal and quality (SNR) scalability over packet-erasure channel. To avoid the waste of bits and obtain the best rate allocation, we propose a threshold-based UEP (TH-UEP) scheme. The proposed TH-UEP designs a predefined threshold according to the length of packet and the error correcting ability of RS code to achieve the best allocation. In addition, the proposed scheme also derives a simple mathematical model to reduce computational load of the best allocation. Experimental results demonstrate that the proposed H.264 video transmission scheme can provide strong robustness and video quality improvement when compared to other 2-D UEP schemes.
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DEMİR, Ömer, und Bengi BİRGİLİ. „Optimal Video Length Effect on Flow Experience and Perceived Learning: A Repeated Measure Experimental Design with Randomization“. Participatory Educational Research 11, Nr. 1 (17.12.2023): 142–57. http://dx.doi.org/10.17275/per.24.9.11.1.
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Videos are commonly used in education. Benefitting from instructional videos in learning processes empowers students’ academic outcomes. In spite of this, educators have no consensus on optimal video length. There is a need to cease speculations on optimal video length since most of them have been relying only on context-based tips or best practices. Therefore, the purpose of this study is to delve into the optimal video length discussion through the lens of perceived learning and flow experience. We employed repeated measure experimental design with randomization of treatment order for each participant. Twenty-eight university students from two big cities in Türkiye volunteered to participate in the study. Short, medium, and long videos were compared via Friedman test. Results of this study substantiated instructional video length does not seem to affect students’ perceived learning and their overall flow experience. However, they tend to concentrate and focus better on short videos. We call for an end to optimal video length discussion for videos shorter than 10 minutes, especially in terms of learning. The implications relying on the findings were discussed in terms of differences between “thinking to be in flow” and “being actually in flow.” The recommendations are given in detail in the full text.
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Park, Brady, Lauren Sano, Becky Shields, Sylvia Okonofua, Mikyla Tak, Reihaneh Jamalifar, Aaron Wen et al. „Development and Evaluation of a Library of TikToks to Support Recruitment of Committed Hematopoietic Stem Cell Donors from Needed Demographic Groups“. Blood 138, Supplement 1 (05.11.2021): 4025. http://dx.doi.org/10.1182/blood-2021-153165.
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Abstract Introduction TikTok is a rapidly growing social media platform that allows users to develop and share short videos. We hypothesized that a library of videos developed through TikTok (TikToks) would support the recruitment of committed hematopoietic stem cell donors from needed demographic groups (i.e. young, male, from diverse ancestries). Methods Members of the community of practice (CoP) in stem cell donor recruitment in Canada (facebook.com/groups/stemcellclub) were activated to develop TikToks. Training was provided during e-meetings of the CoP (8/2020, 1/2021, 5/2021) and in a video published online (stemcellclub.ca/training), highlighting the principles of effective TikTok design. These principles included the use of engaging hooks, music, and calls to action; short duration (< 30s); high educational value; and appeal to diverse donors. The training also outlined how to: record content, adjust clip lengths, apply audiovisual effects, and share across social media platforms. A CoP TikTok committee was formed to develop and review TikToks prior to publication. Following launch, we evaluated stakeholder perspective on these TikToks and the impact 1) across social and traditional media and 2) on eligible donors' knowledge and attitudes towards donation. Results Between 9/2020-7/2021, a network of TikTok channels was launched by CoP members, including a national donor recruitment TikTok library (tiktok.com/@stemcellclub). A total of 217 TikToks were produced across these channels (median length 17s, range 4-52s), covering a range of educational topics, designed for use in specific recruitment campaigns, and featuring unique video effects (Fig. A). The TikToks accumulated over 234,000 Views, 42,000 Likes, 3,000 Comments, and 14,200 Shares on TikTok, were republished by Canadian media outlets (e.g. CBC [twitter.com/cbcnewsbc/status/1361511367426080773], CTV News [ctvnews.ca/health/meet-the-women-hoping-to-recruit-more-stem-cells-donors-from-black-communities-1.5314038, ctvnews.ca/health/pride-month-tiktok-drive-encourages-stem-cell-donations-from-gay-bi-men-1.5475113], Victoria News [vicnews.com/news/most-black-canadians-wont-find-a-stem-cell-donor-in-time-this-group-is-working-to-change-that]) and were highlighted by major medical organizations (e.g. Canadian Blood Services [blood.ca/en/stories/meet-stem-cell-club, blood.ca/en/stories/stem-cell-club-volunteers-aim-save-lives-pride-month-campaign], American Association of Blood Banks [aabb.org/news-resources/news/article/2021/02/01/twitter-tiktok-aabb-virtual-journal-club-assesses-use-of-multimedia-resources-for-donor-recruitment]). 33 CoP members from 6 provinces across Canada, with a median of 2 years of recruitment experience, completed a post-launch survey. The majority felt that TikToks promote donation in an attention-grabbing way (94%), engage younger donors (100%), and teach key points in a short time period (94%). The majority were confident in their ability to make TikToks (63%), but felt they would benefit from additional training (63%). 46 eligible stem cell donors (from 12 different non-Caucasian ancestral groups; living in 5 provinces across Canada) completed surveys evaluating the impact of TikToks on their knowledge and attitudes towards donation. No participants were registered as donors and only four had a personal connection to an individual who needed a stem cell transplant. After being shown a series of TikToks, mean scores on a 6-question stem cell donation knowledge test improved from 59% to 73% (p=0.0012) (Fig. B); mean scores on a modified Simmons Ambivalence Scale decreased from 52% to 30% (p<0.0001) (Fig. C); and participants were more willing to register as donors (70% vs. 39%, p=0.0011). Participants reported that viewing TikToks positively impacted on their decision to register (87%), helped them understand stem cell donation (89%), and would help them talk about stem cell donation with friends/family (78%). Conclusions We report the first published experience using TikToks in a donor recruitment context. Our TikToks achieved significant social and traditional impact in a short period of time, and supported recruitment of committed stem cell donors from needed demographic groups. Our work is relevant to recruitment organizations worldwide seeking to modernize their recruitment approaches. Figure 1 Figure 1. Disclosures No relevant conflicts of interest to declare.
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Bao, Le Nguyen, Dac-Nhuong Le, Gia Nhu Nguyen, Le Van Chung und Nilanjan Dey. „MMAS Algorithm for Features Selection Using 1D-DWT for Video-Based Face Recognition in the Online Video Contextual Advertisement User-Oriented System“. Journal of Global Information Management 25, Nr. 4 (Oktober 2017): 103–24. http://dx.doi.org/10.4018/jgim.2017100107.
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Face recognition is an importance step which can affect the performance of the system. In this paper, the authors propose a novel Max-Min Ant System algorithm to optimal feature selection based on Discrete Wavelet Transform feature for Video-based face recognition. The length of the culled feature vector is adopted as heuristic information for ant's pheromone in their algorithm. They selected the optimal feature subset in terms of shortest feature length and the best performance of classifier used k-nearest neighbor classifier. The experiments were analyzed on face recognition show that the authors' algorithm can be easily implemented and without any priori information of features. The evaluated performance of their algorithm is better than previous approaches for feature selection.
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Ren, Hong E., und Si Li. „New Camera Parameters Calibration Method of Binocular Vision System“. Advanced Materials Research 712-715 (Juni 2013): 2372–77. http://dx.doi.org/10.4028/www.scientific.net/amr.712-715.2372.
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About the key problems of the binocular vision system design which was used to video log examining, and according to the binocular parallax theory and triangle measuring theory, the paper researched the basic principle of camera imaging, proposed the camera parameters calibration method that could determine the best placed baseline distance of two cameras and the camera focal length together, inferred the relationship of the best baseline distance and the camera focal length by analyzing to many groups calibration results. The simulation experiment results show that this method is simple, practical, and has a high precision, provides a theoretical basis for design of tow cameras positions in the binocular vision system.
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Han, Chaoyu, Fangyao Shen, Lina Chen, Xiaoyi Lian, Hongjie Gou und Hong Gao. „MLA-LSTM: A Local and Global Location Attention LSTM Learning Model for Scoring Figure Skating“. Systems 11, Nr. 1 (02.01.2023): 21. http://dx.doi.org/10.3390/systems11010021.
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Video-based scoring using neural networks is a very important means for evaluating many sports, especially figure skating. Although many methods for evaluating action quality have been proposed, there is no uniform conclusion on the best feature extractor and clip length for the existing methods. Furthermore, during the feature aggregation stage, these methods cannot accurately locate the target information. To address these tasks, firstly, we systematically compare the effects of the figure skating model with three different feature extractors (C3D, I3D, R3D) and four different segment lengths (5, 8, 16, 32). Secondly, we propose a Multi-Scale Location Attention Module (MS-LAM) to capture the location information of athletes in different video frames. Finally, we present a novel Multi-scale Location Attentive Long Short-Term Memory (MLA-LSTM), which can efficiently learn local and global sequence information in each video. In addition, our proposed model has been validated on the Fis-V and MIT-Skate datasets. The experimental results show that I3D and 32 frames per second are the best feature extractor and clip length for video scoring tasks. In addition, our model outperforms the current state-of-the-art method hybrid dynAmic-statiC conText-aware attentION NETwork (ACTION-NET), especially on MIT-Skate (by 0.069 on Spearman’s rank correlation). In addition, it achieves average improvements of 0.059 on Fis-V compared with Multi-scale convolutional skip Self-attentive LSTM Module (MS-LSTM). It demonstrates the effectiveness of our models in learning to score figure skating videos.
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Iastremska, Olesia, und Helena Nebylytsia. „SOCIAL NETWORKS AS A TOOL FOR ENTREPRENEURSHIP IN THE CONDITIONS OF THE ECONOMY OF IMPRESSIONS“. Innovative Technologies and Scientific Solutions for Industries, Nr. 1 (23) (20.04.2023): 155–63. http://dx.doi.org/10.30837/itssi.2023.23.155.
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In recent years, Internet and social networks have become a full-fledged platform for business and have significant functions of effective and accurate communication to the target audience of information about potential customers, the availability of necessary communication tools to work with customers, companies, sales of goods, services and more. This is especially important in the context of the development of the economy of impressions. The subject of the article is the analysis of the use of social networks in business activities in the conditions of the impression economy. Analysis of the scientific literature has shown that foreign and domestic scientists are constantly looking for ways to develop business in the online environment. However, scientific works on entrepreneurship in social networks are insufficiently substantiated and adapted to the conditions of functioning Ukrainian enterprises, so they need further development. The purpose of this article is to substantiate theoretically the peculiarities of entrepreneurial activity of Ukrainian business entities in social networks. The main tasks of the article are: analysis of statistical data on the use of social networks in business activities and justification of recommendations for the effectiveness of business activities in social networks. The following research methods were used: analysis and synthesis, statistical analysis, monographic analysis, deductive and inductive method, graphic method. The following results were obtained. It is determined, it was concluded that among the existing platforms for business on the Internet, Facebook and Instagram – these are the two best platforms used by marketers. It was noted which social channels are used by experienced marketers to promote the company's products on social networks compared to those who are just starting out. Thus, "young" social network marketers for effective entrepreneurship focus mainly on Facebook and Instagram. At the same time, the most experienced marketers are very diversified in this process. The main criteria for using video content in business as the most effective tool for doing business on social networks are summarized. The main conclusions are as follows. An analysis of the use of video marketing in online business has shown that YouTube is the number one video channel. At the same time, TikTok is a new video platform, but has already actively regained its place in the market. Therefore, the main criteria for including videos in the TikTok recommendation have been summarized. The main opportunities of SMM in different business segments were also considered. The peculiarities of SMM use for large, medium, small businesses, Internet business and b2b-sphere were noted. The main advantages of entrepreneurship in social networks were summarized and highlighted. The results of the study can be the basis for further development of the practical use of social networks for the entrepreneurial activities of Ukrainian enterprises.
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Enke, Thomas, Rajesh Keswani, Joseph Triggs, Bhargava Gannavarapu, Chetan Mittal, Jasmine Sinha, Mary J. Kwasny und Srinadh Komanduri. „Adherence to quality indicators and best practices in surveillance endoscopy of Barrett’s esophagus: A video-based assessment“. Endoscopy International Open 12, Nr. 01 (Januar 2024): E90—E96. http://dx.doi.org/10.1055/a-2226-3689.
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Abstract Background and study aims Adherence to quality indicators (QIs) and best practices (BPs) for endoscopic surveillance of Barrett’s esophagus (BE) is low based on clinical documentation which is an inaccurate representation of events occurring during procedures. This study aimed to assess adherence to measurable QI and BP using video evaluation. Methods We performed a single center video-based retrospective review of surveillance endoscopies performed for BE ≥1 cm between March 1, 2018 and October 1, 2020. Adherence to QIs and BPs was assessed through video review and documentation. Videos were evaluated by five gastroenterologists. Interrater variability was determined using 10 videos before reviewing the remaining 128 videos. A generalized linear regression model was used to determine predictors of adherence to QIs and BPs. Results There were 138 endoscopies reviewed. Inspection with virtual chromoendoscopy (VC) occurred in 75 cases (54%) on video review with documentation in 50 of these cases (67%). Adherence to the Seattle protocol (SP) occurred in 74 cases (54%) on video review with documentation in 28 of these cases (38%). Use of VC or the SP was documented but not observed on video review in 16 (12%) and 30 (22%) cases, respectively. Length of BE was associated with increased use of the Prague classification (odds ratio [OR] 1.21, 95% confidence interval [CI] 1.07–1.37) while years in practice was associated with a decreased likelihood of VC use (OR 0.93, 95% CI 0.88–0.99). Conclusions This study validates prior data demonstrating poor adherence to QIs and BPs and highlights discrepancies between clinical documentation and events occurring during procedures.
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Doronina, Irina M., und Marina R. Zheltukhina. „Intertitles in short videos in modern Internet communication“. Current Issues in Philology and Pedagogical Linguistics, Nr. 2 (25.06.2024): 154–66. http://dx.doi.org/10.29025/2079-6021-2024-2-154-166.
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The article is devoted to the study of current issues of Internet communication related to the video format of information presentation and intertitles. The aim of the paper is to study intertitles in short videos in modern Internet communication which is achieved by using a set of methods: lexical and stylistic analysis, grammatical and stylistic analysis, linguasemiotic analysis, elements of content and discursive analysis, as well as diachronic and interpretive analysis. The article proposed and confirmed the hypothesis of returning intertitles to the content structure of short videos using the example of publications of TikTok, VKontakte, Telegram and other services. A tendency towards a decrease in the duration of video content has been proven, caused by a decrease in the ability of society to critical assessment and analysis, fragmentation, and discontinuity in information perception. The novelty is to establish the fact that with the same roles in video content, modern intertitles differ from silent movie intertitles: (a) by location (modern intertitles are placed right inside the scene, not between scenes); (b) by a conscious rejection of the voiceover text (in case of silent movies, the connection of voiceover and video sequence was impossible, whereas in modern video content, sound is deliberately excluded, providing the opportunity to watch the video in the “no sound” mode). Due to the time limit and accelerated pace of life, the addressee (viewer) often cannot turn on the soundtrack of videos, while a smartphone with this content is his constant companion: viewing of the studied video formats can take place in places unsuitable for their full perception (in transport, in queues, at meetings, etc.) – where extraneous sound will create inconvenience for others. The work contributes to the development of discursive linguistics, media linguistics, Internet linguistics, linguasemiotics, is useful in the practical activities of journalists, editors, philologists, public relations specialists. The article defines the prospect for researchers of media and psycholinguistic addictions, since the forced compression of film text at the beginning of the 20th century prompted society to develop technical capabilities for the formation of high-quality full-length cinema with modern sound and text design, which became familiar to the addressee at the beginning of the 21st century. At the same time, the accelerating pace of life in information flows returns to society the need for information compression, like the one that was at the beginning of the 20th century, returning the viewer de facto to the era of silent cinema.
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Lee, Kuo-Sheng, und Cheng-Chien Yang. „Tracheal Length of Infants under Three Months Old“. Annals of Otology, Rhinology & Laryngology 110, Nr. 3 (März 2001): 268–70. http://dx.doi.org/10.1177/000348940111000312.
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The measurement of tracheal length in infants is difficult to perform in vivo. In adults, tracheal length may be consistent with age, but in infants, tracheal length may vary much more with age and other factors. This study used video rigid ventilation bronchoscopy to evaluate the length of the airway, concentrating on the population younger than 3 months old. There were 34 infants in this study: 14 boys and 20 girls. The mean length from the superior border of the vocal fold to the carina was 5.04 cm, and the mean tracheal length (from the ridge of the first tracheal ring to the carina) was 4.12 cm. There was no significant difference between boys and girls in the length from the vocal fold to the carina or in the tracheal length. The length from the vocal fold to the carina is best correlated to body weight, followed by body height and age.
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Caston, Emily. „Music videos in the British screen industries and screen heritage: From innovation to curation. Introduction“. Alphaville: Journal of Film and Screen Media, Nr. 19 (23.07.2020): 154–59. http://dx.doi.org/10.33178/alpha.19.13.
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In December 2019, Rolling Stone magazine ran a piece on the best videos of the year which began by asking, “What even counts as a music video now?” (Shaffer). Vevo, Tiktok and Instagram TV have blurred the lines. Videos can be an hour long. They can be events on YouTube Premiere. They can be virtual reality. The idea that the world of the earliest creators of pop promos was simple in comparison to today subtends this dossier. In 2015, I was awarded an Arts and Humanities Research Council (AHRC) grant to investigate the history of music videos in Britain since 1966. At the end of the grant, I curated a collection of the most significant of those videos into a limited-edition box set (Power). Selecting them involved very detailed discussions with our interviewees and industry consultants about just what a “music video”—known as a “promo” until the mid 1980s—is. The term “music video” arose in the 1980s. It was used in record labels to describe visual products mastered on physical videotapes for television broadcast. In fact, almost all of those products were shot on celluloid (16mm or 35mm) until digital technologies allowed HD to become the norm in the 2000s. For the purposes of this dossier, I define music videos and pop promos as a type of musical short film for mass audiences commissioned and released by record labels (usually) at the same time as the release of a synchronised audio “single”; the shorts comprise a copyrighted synchronised picture and audio track in which a percentage of the royalties accrue to the recording artist and/or record label. This dossier is a collection of core materials emerging from the AHRC project.
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Yu, Xinguo, Wu Song, Xiaopan Lyu, Bin He und Nan Ye. „Reading Both Single and Multiple Digital Video Clocks Using Context-Aware Pixel Periodicity and Deep Learning“. International Journal of Digital Crime and Forensics 12, Nr. 2 (April 2020): 21–39. http://dx.doi.org/10.4018/ijdcf.2020040102.
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This article presents an algorithm for reading both single and multiple digital video clocks by using a context-aware pixel periodicity method and a deep learning technique. Reading digital video clocks in real time is a very challenging problem. The first challenge is the clock digit localization. The existing pixel periodicity is not applicable to localizing multiple second-digit places. This article proposes a context-aware pixel periodicity method to identify the second-pixels of each clock. The second challenge is clock-digit recognition. For this task, the algorithms based a domain knowledge and deep learning technique is proposed to recognize clock digits. The proposed algorithm is better than the existing best one in two aspects. The first one is that it can read not only single digit video clock but also multiple digit video clocks. The other is that it requires a short length of a video clip. The experimental results show that the proposed algorithm can achieve 100% of accuracy in both localization and recognition for both single and multiple clocks.
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Litton, Eric. „Videos in Online Courses“. Journal of Effective Teaching in Higher Education 4, Nr. 3 (04.01.2022): 94–110. http://dx.doi.org/10.36021/jethe.v4i3.247.
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Many instructors use videos to support their teaching in online courses to convey course content that would normally be taught in a traditional setting. Prior studies have shown some connection between utilizing online videos and student performance but do not always support their finding statistically or consider the nuance of the online videos, such as if the videos are required and how long the videos are. This article uses various quantitative analysis techniques to investigate the relationship between video length, student video viewing patterns, and grades. The findings indicate that videos should stay within a certain length to encourage student engagement with the videos and course assignments. Also, watching online videos is only positively related to grades when students are not required to watch, a result that is consistent across course-level and student-level models. Student viewing patterns also differ for courses that require watching videos versus those that do not. The article concludes by discussing the relevance of these results and how instructors can best utilize online videos in their courses.
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Geri, Nitza, Amir Winer und Beni Zaks. „A Learning Analytics Approach for Evaluating the Impact of Interactivity in Online Video Lectures on the Attention Span of Students“. Interdisciplinary Journal of e-Skills and Lifelong Learning 13 (2017): 215–28. http://dx.doi.org/10.28945/3875.
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Aim/Purpose: As online video lectures rapidly gain popularity in formal and informal learning environments, one of their main challenges is student retention. This study investigates the influence of adding interactivity to online video lectures on students’ attention span. Background: Interactivity is perceived as increasing the attention span of learners and improving the quality of learning. However, interactivity may be regarded as an interruption, which distracts students. Furthermore, adding interactive elements to online video lectures requires additional investment of various resources. Therefore, it is important to investigate the impact of adding interactivity to online video lectures on the attention span of learners. Methodology: This study employed a learning analytics approach, obtained data from Google Analytics, and analyzed data of two Massive Open Online Courses (MOOCs) that were developed by the Open University of Israel in order to make English for academic purposes (EAP) courses freely accessible. Contribution: The paper provides important insights, based on quantitative empirical research, on: integrating interactive elements in online videos; the impact of video length; and differences between two groups of advanced and basic learners. Furthermore, it demonstrates how learning analytics may be used for improving instructional design. Findings: The findings suggest that interactivity may increase the attention span of learners, as measured by the average online video lecture viewing completion percentage, before and after the addition of interactivity. However, when the lecture is longer than about 15 minutes, the completion percentages decrease, even after adding interactive elements. Recommendations for Practitioners: Adding interactivity to online video lectures and controlling their length is expected to increase the attention span of learners. Recommendation for Researchers: Learning analytics is a powerful quantitative methodology for identifying ways to improve learning processes. Impact on Society: Providing practical insights on mechanisms for increasing the attention span of learners is expected to improve social inclusion. Future Research: Discovering further best practices to improve the effectiveness of online video lectures for diverse learners.
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Krzysztof, Maćkała, und Antti Mero. „A Kinematics Analysis Of Three Best 100 M Performances Ever“. Journal of Human Kinetics 36, Nr. 1 (01.03.2013): 149–60. http://dx.doi.org/10.2478/hukin-2013-0015.
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The purpose of this investigation was to compare and determine the relevance of the morphological characteristics and variability of running speed parameters (stride length and stride frequency) between Usain Bolt’s three best 100 m performances. Based on this, an attempt was made to define which factors determine the performance of Usain Bolt's sprint and, therefore, distinguish him from other sprinters. We analyzed the previous world record of 9.69 s set in the 2008 Beijing Olympics, the current record of 9.58 s set in the 2009 Berlin World Championships in Athletics and the O lympic record of 9.63 s set in 2012 London Olympics Games by Usain Bolt. The application of VirtualDub Programme allowed the acquisition of basic kinematical variables such as step length and step frequency parameters of 100 m sprint from video footage provided by NBC TV station, BBC TV station. This data was compared with other data available on the web and data published by the Scientific Research Project Office responsible on behalf of IAAF and the German Athletics Association (DVL). The main hypothesis was that the step length is the main factor that determines running speed in the 10 and 20 m sections of the entire 100 m distance. Bolt’s anthropometric advantage (body height, leg length and liner body) is not questionable and it is one of the factors that makes him faster than the rest of the finalists from each three competitions. Additionally, Bolt’s 20 cm longer stride shows benefit in the latter part of the race. Despite these factors, he is probably able to strike the ground more forcefully than rest of sprinters, relative to their body mass, therefore, he might maximize his time on the ground and to exert the same force over this period of time. This ability, combined with longer stride allows him to create very high running speed - over 12 m/s (12.05 -12.34 m/s) in some 10 m sections of his three 100 m performances. These assumption confirmed the application of Ballerieich's formula for speed development. In most 10 m sections of the 100 m sprint, the step length was the parameter that significantly determined the increase of maximal running speed, therefore, distinguishing Bolt from the other finalists.
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Suwarno und Darunee Jongudomkarn. „FILM PENDEK ALAT PENGKAJIAN KESEHATAN KELUARGA KHON KAEN UNIVERSITY“. MEDIA ILMU KESEHATAN 5, Nr. 2 (09.11.2019): 113–18. http://dx.doi.org/10.30989/mik.v5i2.154.
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Background:Family health care in family nursing is focused on a holistic health care view. A holistic health carewill be achieved if the family health nursing care is properly executed. The continuing education is appropriate to increase the family health assessment application and understanding. It consists of training programs, which might take advantage of a video as a learning media.
Objective:The objective of the study was to produce the KKU FHA tool short movie based on the 3 phases; pre-production, production and post-production.
Methods:Five nursing educators reviewed the video and evaluateit with a form in a Likert scale.
Result: This video was in MOV format, sized1.12 GB, the picture size was 1280x720, codec H.264, AAC, length of time was 16.53 minutes and could be opened in smartphone andcomputer. The mean score of the evaluation form was 3.6 for the quality of sound and 4.8 for the benefit of the video. The total mean score was 45.8 out of55.
Conclusion:The KKU FHA tool short video was appropriate and could be implemented ina try-out or a training program, and couldalsobe developed and improvedto achieve the best quality of sound and picture.
Keywords: Family health assessment, KKU FHA Tool, training, short movie
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Suwarno, Suwarno, und DaruneeJongudomkarn Jongudomkarn. „FILM PENDEK ALAT PENGKAJIAN KESEHATAN KELUARGA KHON KAEN UNIVERSITY“. Media Ilmu Kesehatan 5, Nr. 2 (03.08.2016): 113–18. http://dx.doi.org/10.30989/mik.v5i2.59.
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Background:Family health care in family nursing is focused on a holistic health care view. A holistic health carewill be achieved if the family health nursing care is properly executed. The continuing education is appropriate to increase the family health assessment application and understanding. It consists of training programs, which might take advantage of a video as a learning media.
Objective:The objective of the study was to produce the KKU FHA tool short movie based on the 3 phases; pre-production, production and post-production.
Methods:Five nursing educators reviewed the video and evaluateit with a form in a Likert scale.
Result: This video was in MOV format, sized1.12 GB, the picture size was 1280x720, codec H.264, AAC,
length of time was 16.53 minutes and could be opened in smartphone andcomputer. The mean score of the evaluation form was 3.6 for the quality of sound and 4.8 for the benefit of the video. The total mean score was 45.8 out of55.
Conclusion:The KKU FHA tool short video was appropriate and could be implemented ina try-out or a training program, and couldalsobe developed and improvedto achieve the best quality of sound and picture.
Keywords: family health assessment, KKU FHA Tool, training, short movie
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Hurtado de Mendoza, Alejandra, Kristi Graves, Sara Gómez-Trillos, Minna Song, Lyndsay Anderson, Claudia Campos, Pilar Carrera et al. „3125 Acceptability of a Narrative Video to Enhance the Use of Genetic Counseling in Latina Women at-risk of Hereditary Breast and Ovarian Cancer: Community Health Worker’s Perspective“. Journal of Clinical and Translational Science 3, s1 (März 2019): 80–81. http://dx.doi.org/10.1017/cts.2019.188.
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OBJECTIVES/SPECIFIC AIMS: The goal of the study was to assess the acceptability of a culturally targeted narrative video and identify potential avenues for dissemination in a sample of bilingual community health workers who provide services to the Latino community in the United States. METHODS/STUDY POPULATION: We piloted the video in a sample of bilingual community health workers who provide services to Latinos (n=31). After watching the video, participants filled out a survey. The survey captured sociodemographic data (e.g. education), their role and experience working with Latinos (e.g. patient navigators), acceptability of the video (e.g. general satisfaction, length of the video, amount of information), and potential dissemination (e.g., dissemination channels, preferred settings to watch the video, and preferred context). Three open ended questions captured information about how the video could be useful for the Latino community, what they liked the most from the video, and suggestions for improvement. Data was entered in SPSS version 25. We used descriptive statistics to analyze the survey, and content analysis to summarize the feedback from the open-ended questions. RESULTS/ANTICIPATED RESULTS: Participants (n = 31) had an average age of 46 years (SD=16.99), all self-identified as Hispanic or Latinos, most were female (90.3%), and worked as patient navigators (29%) or community outreach workers (25.8%). The video’s general acceptability was very high. Participants reported high ratings for overall satisfaction, how much they liked the video, enjoyed it, and considered it to be interesting (all means >9.6, range 1-10). Most participants strongly agreed or agreed that the length was adequate (80.7%), that the information presented was very helpful (100%), that the video could be useful for the Latina community (96.8%), and that they would share the video with women at-risk of HBOC (100%). The highest endorsed channels for dissemination were Facebook (90.3) and YouTube (87.1%). The highest endorsed settings were community centers (100%), churches (96.8%), and hospitals (80.6%). Most participants (90.3%) considered that the best context to watch the video would be with relatives, followed by watching with other women at-risk of HBOC (71.0%), friends (71.0%), and lastly by oneself (41.9%) DISCUSSION/SIGNIFICANCE OF IMPACT: This study represents a multidisciplinary approach to intervention development that aims to reduce well-documented knowledge gaps and disparities in the use of GCRA among at-risk Latinas. A culturally targeted video has the potential to reach underserved populations with low literacy and English proficiency and it can be widely disseminated. The video was well received by community health workers who reported high acceptability. These findings are promising given that community health workers could play a key role in the dissemination of the video if it is proven to be efficacious.
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Poitras, Isabelle, Léandre Gagné-Pelletier, Jade Clouâtre, Véronique H. Flamand, Alexandre Campeau-Lecours und Catherine Mercier. „Optimizing Epoch Length and Activity Count Threshold Parameters in Accelerometry: Enhancing Upper Extremity Use Quantification in Cerebral Palsy“. Sensors 24, Nr. 4 (08.02.2024): 1100. http://dx.doi.org/10.3390/s24041100.
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Various accelerometry protocols have been used to quantify upper extremity (UE) activity, encompassing diverse epoch lengths and thresholding methods. However, there is no consensus on the most effective approach. The aim of this study was to delineate the optimal parameters for analyzing accelerometry data to quantify UE use in individuals with unilateral cerebral palsy (CP). Methods: A group of adults with CP (n = 15) participated in six activities of daily living, while a group of children with CP (n = 14) underwent the Assisting Hand Assessment. Both groups performed the activities while wearing ActiGraph GT9X-BT devices on each wrist, with concurrent video recording. Use ratio (UR) derived from accelerometry and video analysis and accelerometer data were compared for different epoch lengths (1, 1.5, and 2 s) and activity count (AC) thresholds (between 2 and 150). Results: In adults, results are comparable across epoch lengths, with the best AC thresholds being ≥ 100. In children, results are similar across epoch lengths of 1 and 1.5 (optimal AC threshold = 50), while the optimal threshold is higher with an epoch length of 2 (AC = 75). Conclusions: The combination of epoch length and AC thresholds should be chosen carefully as both influence the validity of the quantification of UE use.
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Manning, Brittany L., Alexandra Harpole, Emily M. Harriott, Kamila Postolowicz und Elizabeth S. Norton. „Taking Language Samples Home: Feasibility, Reliability, and Validity of Child Language Samples Conducted Remotely With Video Chat Versus In-Person“. Journal of Speech, Language, and Hearing Research 63, Nr. 12 (14.12.2020): 3982–90. http://dx.doi.org/10.1044/2020_jslhr-20-00202.
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Purpose There has been increased interest in using telepractice for involving more diverse children in research and clinical services, as well as when in-person assessment is challenging, such as during COVID-19. Little is known, however, about the feasibility, reliability, and validity of language samples when conducted via telepractice. Method Child language samples from parent–child play were recorded either in person in the laboratory or via video chat at home, using parents' preferred commercially available software on their own device. Samples were transcribed and analyzed using Systematic Analysis of Language Transcripts software. Analyses compared measures between-subjects for 46 dyads who completed video chat language samples versus 16 who completed in-person samples; within-subjects analyses were conducted for a subset of 13 dyads who completed both types. Groups did not differ significantly on child age, sex, or socioeconomic status. Results The number of usable samples and percent of utterances with intelligible audio signal did not differ significantly for in-person versus video chat language samples. Child speech and language characteristics (including mean length of utterance, type–token ratio, number of different words, grammatical errors/omissions, and child speech intelligibility) did not differ significantly between in-person and video chat methods. This was the case for between-group analyses and within-child comparisons. Furthermore, transcription reliability (conducted on a subset of samples) was high and did not differ between in-person and video chat methods. Conclusions This study demonstrates that child language samples collected via video chat are largely comparable to in-person samples in terms of key speech and language measures. Best practices for maximizing data quality for using video chat language samples are provided.
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Al Bdour, Nashat. „Encryption of Dynamic Areas of Images in Video based on Certain Geometric and Color Shapes“. WSEAS TRANSACTIONS ON INFORMATION SCIENCE AND APPLICATIONS 20 (29.03.2023): 109–18. http://dx.doi.org/10.37394/23209.2023.20.13.
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The paper is devoted to the search for new approaches to encrypting selected objects in an image. Videos were analyzed, which were divided into frames, and in each video frame, the necessary objects were detected for further encryption. Images of objects with a designated geometric shape and color characteristics of pixels were considered. To select objects, a method was used based on the calculation of average values, the analysis of which made it possible to determine the convergence with the established image. Dividing the selected field into subregions with different shapes solves the problem of finding objects of the same type with different scales. In addition, the paper considers the detection of moving objects. The detection of moving objects is carried out based on determining the frame difference in pixel codes in the form of a rectangular shape. Cellular automata technology was used for encryption. The best results were shown by the transition rules of elementary cellular automata, such as: 90, 105, 150, and XOR function. The use of cellular automata technologies made it possible to use one key sequence to encrypt objects on all video frames of the video. Encryption results are different for the same objects located in different places of the same video frame and different video frames of the video sequence. The video frame image is divided into bit layers, the number of which is determined by the length of the code of each pixel. Each bit layer is encrypted with the same evolution, which is formed by one initial key bit sequence. For each video frame, a different part of the evolution is used, as well as for each detected object in the image. This approach gives different results for any objects that have a different location both on the video frame image and in different video frames. The described methods allow you to automate the process of detecting objects on video and encrypting them.
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Lawande, Sharmad Rajnish, Graceline Jasmine, Jani Anbarasi und Lila Iznita Izhar. „A Systematic Review and Analysis of Intelligence-Based Pathfinding Algorithms in the Field of Video Games“. Applied Sciences 12, Nr. 11 (28.05.2022): 5499. http://dx.doi.org/10.3390/app12115499.
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This paper provides a performance comparison of different pathfinding Algorithms used in video games. The Algorithms have been classified into three categories: informed, uninformed, and metaheuristic. Both a practical and a theoretical approach have been adopted in this paper. The practical approach involved the implementation of specific Algorithms such as Dijkstra’s, A-star, Breadth First Search, and Greedy Best First. The comparison of these Algorithms is based on different criteria including execution time, total number of iterations, shortest path length, and grid size. For the theoretical approach, information was collected from various papers to compare other Algorithms with the implemented ones. The Unity game engine was used in implementing the Algorithms. The environment used was a two-dimensional grid system.
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Shafi, A. S. M., und Mohammad Motiur Rahman. „Decomposition of color wavelet with higher order statistical texture and convolutional neural network features set based classification of colorectal polyps from video endoscopy“. International Journal of Electrical and Computer Engineering (IJECE) 10, Nr. 3 (01.06.2020): 2986. http://dx.doi.org/10.11591/ijece.v10i3.pp2986-2996.
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Gastrointestinal cancer is one of the leading causes of death across the world. The gastrointestinal polyps are considered as the precursors of developing this malignant cancer. In order to condense the probability of cancer, early detection and removal of colorectal polyps can be cogitated. The most used diagnostic modality for colorectal polyps is video endoscopy. But the accuracy of diagnosis mostly depends on doctors' experience that is crucial to detect polyps in many cases. Computer-aided polyp detection is promising to reduce the miss detection rate of the polyp and thus improve the accuracy of diagnosis results. The proposed method first detects polyp and non-polyp then illustrates an automatic polyp classification technique from endoscopic video through color wavelet with higher-order statistical texture feature and Convolutional Neural Network (CNN). Gray Level Run Length Matrix (GLRLM) is used for higher-order statistical texture features of different directions (Ɵ = 0o, 45o, 90o, 135o). The features are fed into a linear support vector machine (SVM) to train the classifier. The experimental result demonstrates that the proposed approach is auspicious and operative with residual network architecture, which triumphs the best performance of accuracy, sensitivity, and specificity of 98.83%, 97.87%, and 99.13% respectively for classification of colorectal polyps on standard public endoscopic video databases.
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Taha, Miran, Jose Miguel Jimenez, Alejandro Canovas und Jaime Lloret. „Intelligent Algorithm for Enhancing MPEG-DASH QoE in eMBMS“. Network Protocols and Algorithms 9, Nr. 3-4 (18.02.2018): 94. http://dx.doi.org/10.5296/npa.v9i3-4.12573.
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Multimedia streaming is the most demanding and bandwidth hungry application in today’s world of Internet. MPEG-DASH as a video technology standard is designed for delivering live or on-demand streams in Internet to deliver best quality content with the fewest dropouts and least possible buffering. Hybrid architecture of DASH and eMBMS has attracted a great attention from the telecommunication industry and multimedia services. It is deployed in response to the immense demand in multimedia traffic. However, handover and limited available resources of the system affected on dropping segments of the adaptive video streaming in eMBMS and it creates an adverse impact on Quality of Experience (QoE), which is creating trouble for service providers and network providers towards delivering the service. In this paper, we derive a case study in eMBMS to approach to provide test measures evaluating MPEG-DASH QoE, by defining the metrics are influenced on QoE in eMBMS such as bandwidth and packet loss then we observe the objective metrics like stalling (number, duration and place), buffer length and accumulative video time. Moreover, we build a smart algorithm to predict rate of segments are lost in multicast adaptive video streaming. The algorithm deploys an estimation decision regards how to recover the lost segments. According to the obtained results based on our proposal algorithm, rate of lost segments is highly decreased by comparing to the traditional approach of MPEG-DASH multicast and unicast for high number of users.
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Kocyildirim, Ergin, Linda S. Franck und Martin J. Elliott. „Intra-operative imaging in paediatric cardiac surgery: the reactions of parents who requested and watched a video of the surgery performed on their child“. Cardiology in the Young 17, Nr. 4 (25.06.2007): 407–13. http://dx.doi.org/10.1017/s1047951107000716.
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AbstractObjectiveOur previous work demonstrated that digital video recording of operations is the best way to describe the morphological features and complex dynamic physiology of surgical treatment of congenitally malformed hearts. Parental consent is required for video recording, and some parents have requested, and obtained, a copy of the video of the operation performed on their child. Our present aim was to explore their feelings and opinions having viewed the recording of the surgical procedures.Design and participantsThis exploratory study examined the views of 17 parents, comprising 7 couples, 2 mothers, and 1 father, after requesting, and then watching, the recording of the operation performed on their child. The audio-taped, semistructured interviews were analyzed for the thematic content.ResultsAll parents watched the videos at least once, and no parent exhibited distress as a result. Curiosity and desire for learning, and wanting to know what exactly happened to the child during the operation, were the most common reasons for requesting the video. Parents reported that the videos were also useful in sharing the experience with family and friends. The videos had no effect on the attitudes of the parents towards the surgical team. Parents made recommendations to increase the length of the edited videos and add labels and voice-overs.ConclusionParents of children with congenitally malformed hearts want to watch the recording of the operation performed because of their need for information, and to understand the experience of their children when separated from them. Research is needed to assess the potential value of operative videos in facilitating parental knowledge and coping when children undergo major cardiac surgery.
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Zabaleta, Jon, Borja Aguinagalde, Carlos Alvarez, Marta G. Fuentes, Nerea Bazterargui, José M. Izquierdo und José I. Emparanza. „Video-assisted thoracoscopic surgery for the treatment of primary pneumothorax: talc pleurodesis or pleural abrasion? Retrospective multicentre study“. Chest Disease Reports 1, Nr. 1 (31.08.2011): 9. http://dx.doi.org/10.4081/cdr.2011.e9.
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In the treatment of primary spontaneous pneumothorax (PSP) the latest guidelines recommend video-assisted thoracoscopy, but do not specify the best technique for performing pleurodesis. Indeed, there are no clinical trials comparing the effectiveness of talc pleurodesis, mechanical pleurodesis and pleurectomy. Our objective was to compare outcomes in patients who underwent surgery for primary pneumothorax with the talc procedure or with pleural abrasion using dry gauze. Patients undergoing video-assisted thoracoscopic surgery for PSP in two hospitals were retrospectively recruited between 2007 and 2008, and followed-up until December 2010. The variables measured to compare the outcomes were: recurrence, complications, and mortality, as well as the duration of air leaks and of drainage and the length of postoperative hospital stay (in days). Statistical analysis: The two groups were compared using the Chi square test for qualitative variables and nonparametric tests for continuous variables. A total of 106 interventions were carried out in 104 patients (74 in group A: pleural abrasion with dry gauze; 32 in group B: chemical pleurodesis with talc), with a mean age of 28 years (median 25) and 85.6% were male. Complications were observed in nine patients (8.5%) and there were no deaths in the 30 days after surgery; there were, however, four cases of recurrence (3.8%). The mean air leak duration was 0.78 days (median 0), the mean drainage duration 1.95 days (median 1) and the mean length of postoperative hospital stay 2.68 days (median 2). In 74 cases (69.8%), mechanical pleurodesis was performed, while 32 cases were treated with talc (30.2%). Comparing the two groups, we did not find statistically significant differences in recurrence (4.1% vs 3.1%, P=0.82), complications (6.8% vs 12.5%, P=0.45) or mortality (no cases of death). On the other hand, the mean postoperative hospital stay was lower in the mechanical pleurodesis group than in the talc group (2.2 vs 3.8 days, P=0.005). Video-assisted surgery in the treatment of PSP is a safe technique. In the mechanical pleurodesis group, we observed the same rate of recurrence, half the number of complications and a shorter hospital stay. We consider it necessary that well-designed multicentre clinical trials be carried out to compare these techniques and determine which produces the best outcomes, providing stronger scientific evidence given that the data available to date are not conclusive.
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Zabaleta, Jon, Borja Aguinagalde, Carlos Alvarez, Marta G. Fuentes, Nerea Bazterargui, José M. Izquierdo und José I. Emparanza. „Video-assisted thoracoscopic surgery for the treatment of primary pneumothorax: talc pleurodesis or pleural abrasion? Retrospective multicentre study“. Chest Disease Reports 4, Nr. 1 (31.08.2011): e9. http://dx.doi.org/10.4081/cdr.4.151.
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In the treatment of primary spontaneous pneumothorax (PSP) the latest guidelines recommend video-assisted thoracoscopy, but do not specify the best technique for performing pleurodesis. Indeed, there are no clinical trials comparing the effectiveness of talc pleurodesis, mechanical pleurodesis and pleurectomy. Our objective was to compare outcomes in patients who underwent surgery for primary pneumothorax with the talc procedure or with pleural abrasion using dry gauze. Patients undergoing video-assisted thoracoscopic surgery for PSP in two hospitals were retrospectively recruited between 2007 and 2008, and followed-up until December 2010. The variables measured to compare the outcomes were: recurrence, complications, and mortality, as well as the duration of air leaks and of drainage and the length of postoperative hospital stay (in days). Statistical analysis: The two groups were compared using the Chi square test for qualitative variables and nonparametric tests for continuous variables. A total of 106 interventions were carried out in 104 patients (74 in group A: pleural abrasion with dry gauze; 32 in group B: chemical pleurodesis with talc), with a mean age of 28 years (median 25) and 85.6% were male. Complications were observed in nine patients (8.5%) and there were no deaths in the 30 days after surgery; there were, however, four cases of recurrence (3.8%). The mean air leak duration was 0.78 days (median 0), the mean drainage duration 1.95 days (median 1) and the mean length of postoperative hospital stay 2.68 days (median 2). In 74 cases (69.8%), mechanical pleurodesis was performed, while 32 cases were treated with talc (30.2%). Comparing the two groups, we did not find statistically significant differences in recurrence (4.1% vs 3.1%, P=0.82), complications (6.8% vs 12.5%, P=0.45) or mortality (no cases of death). On the other hand, the mean postoperative hospital stay was lower in the mechanical pleurodesis group than in the talc group (2.2 vs 3.8 days, P=0.005). Video-assisted surgery in the treatment of PSP is a safe technique. In the mechanical pleurodesis group, we observed the same rate of recurrence, half the number of complications and a shorter hospital stay. We consider it necessary that well-designed multicentre clinical trials be carried out to compare these techniques and determine which produces the best outcomes, providing stronger scientific evidence given that the data available to date are not conclusive.
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Sigrist, Samuel, Thomas Maier und Raphael Faiss. „Qualitative Video Analysis of Track-Cycling Team Pursuit in World-Class Athletes“. International Journal of Sports Physiology and Performance 12, Nr. 10 (01.11.2017): 1305–9. http://dx.doi.org/10.1123/ijspp.2016-0596.
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Context: Track-cycling team pursuit (TP) is a highly technical effort involving 4 athletes completing 4 km from a standing start, often in less than 240 s. Transitions between athletes leading the team are obviously of utmost importance. Purpose: To perform qualitative video analyses of transitions of world-class athletes in TP competitions. Methods: Videos captured at 100 Hz were recorded for 77 races (including 96 different athletes) in 5 international track-cycling competitions (eg, UCI World Cups and World Championships) and analyzed for the 12 best teams in the UCI Track Cycling TP Olympic ranking. During TP, 1013 transitions were evaluated individually to extract quantitative (eg, average lead time, transition number, length, duration, height in the curve) and qualitative (quality of transition start, quality of return at the back of the team, distance between third and returning rider score) variables. Determination of correlation coefficients between extracted variables and end time allowed assessment of relationships between variables and relevance of the video analyses. Results: Overall quality of transitions and end time were significantly correlated (r = .35, P = .002). Similarly, transition distance (r = .26, P = .02) and duration (r = .35, P = .002) were positively correlated with end time. Conversely, no relationship was observed between transition number, average lead time, or height reached in the curve and end time. Conclusion: Video analysis of TP races highlights the importance of quality transitions between riders, with preferably swift and short relays rather than longer lead times for faster race times.
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Płotka, Szymon, Adam Klasa, Aneta Lisowska, Joanna Seliga-Siwecka, Michał Lipa, Tomasz Trzciński und Arkadiusz Sitek. „Deep learning fetal ultrasound video model match human observers in biometric measurements“. Physics in Medicine & Biology 67, Nr. 4 (16.02.2022): 045013. http://dx.doi.org/10.1088/1361-6560/ac4d85.
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Abstract Objective. This work investigates the use of deep convolutional neural networks (CNN) to automatically perform measurements of fetal body parts, including head circumference, biparietal diameter, abdominal circumference and femur length, and to estimate gestational age and fetal weight using fetal ultrasound videos. Approach. We developed a novel multi-task CNN-based spatio-temporal fetal US feature extraction and standard plane detection algorithm (called FUVAI) and evaluated the method on 50 freehand fetal US video scans. We compared FUVAI fetal biometric measurements with measurements made by five experienced sonographers at two time points separated by at least two weeks. Intra- and inter-observer variabilities were estimated. Main results. We found that automated fetal biometric measurements obtained by FUVAI were comparable to the measurements performed by experienced sonographers The observed differences in measurement values were within the range of inter- and intra-observer variability. Moreover, analysis has shown that these differences were not statistically significant when comparing any individual medical expert to our model. Significance. We argue that FUVAI has the potential to assist sonographers who perform fetal biometric measurements in clinical settings by providing them with suggestions regarding the best measuring frames, along with automated measurements. Moreover, FUVAI is able perform these tasks in just a few seconds, which is a huge difference compared to the average of six minutes taken by sonographers. This is significant, given the shortage of medical experts capable of interpreting fetal ultrasound images in numerous countries.
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Kamal, Yasser Ali, und Hussein Elkhayat. „In patients with localized bronchiectasis, does thoracoscopic lung resection result in improved clinical outcomes compared to open surgery?“ Interactive CardioVascular and Thoracic Surgery 34, Nr. 3 (24.11.2021): 478–81. http://dx.doi.org/10.1093/icvts/ivab329.
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Summary A best evidence topic was constructed according to a structured protocol. The question addressed was whether video-assisted thoracoscopic surgery (VATS), compared to open lung resection, resulted in improved postoperative clinical outcomes, in patients with localized bronchiectasis indicated for surgery. A total of 1352 papers were found using the reported search, of which 5 papers represented the best evidence to answer the clinical question. The authors, journal, date and country of publication, patient group studied, study type, relevant outcomes and results of these papers are tabulated. All of the identified studies were retrospective. The conversion rate from VATS to open procedure ranged from 0% to 15.3%. In comparison to thoracotomy, VATS resulted in a significant reduction of postoperative blood loss (1 study), length of hospital stay (2 studies), postoperative complication rate (2 studies), pain scales (2 studies) and chest tube duration (1 study). However, there was a significant increase in operative time (1 study) and whole cost (2 studies). There was no significant difference in the clinical recovery, which was defined by the disappearance or improvement of preoperative symptoms during the follow-up period (3 studies). We conclude that although there is limited high-level evidence, retrospective studies have suggested that VATS could significantly reduce complications rate, postoperative blood loss, pain scales, length of hospital stay and chest tube duration compared to open lung resection in selected patients with localized bronchiectasis.
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Steel, Kylie A., David I. Anderson, Caroline A. Smith, Eathan Ellem, Karen P. Y. Liu, Andrew Morrison-Gurza, Tinashe Dune und Lauren H. Fairley. „Potential Value of Customized Video Self-Modelling for Motor Skill Learning in Individuals with Cerebral Palsy: A Case-Study Approach“. Perceptual and Motor Skills 128, Nr. 4 (23.04.2021): 1464–84. http://dx.doi.org/10.1177/00315125211012810.
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Cerebral Palsy (CP) is a common physical disability that is managed with a variety of strategies. One non-invasive intervention for people living with CP is a type of video self-modelling (VSM) referred to as positive self-review (PSR). PSR involves watching a video of oneself performing only the best examples of a desired task; this technique has been associated with improved performance and learning for people without disabilities and for those in various clinical populations, including children with spina bifida and stroke patients. PSR may have similar benefits for people living with CP. In this study we examined the effectiveness of PSR for improving a self-selected movement task among individuals living with CP. In this case study approach, eight participants completed a pre-, post-, and second post-test measuring and recording well-being, movement self-consciousness and tendency to consciously monitor movements. Results were mixed, with some participants improving their movement time, well-being ratings and tendency toward self-consciousness and conscious monitoring of movements and others showing no changes or regressions. The effectiveness of VSM appears to depend upon the match between type of task and disability and/or the length of practice. More study is needed.
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Hacimurtazaoglu, Murat, und Kemal Tutuncu. „LSB-based pre-embedding video steganography with rotating & shifting poly-pattern block matrix“. PeerJ Computer Science 8 (06.01.2022): e843. http://dx.doi.org/10.7717/peerj-cs.843.
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Background In terms of data-hiding areas, video steganography is more advantageous compared to other steganography techniques since it uses video as its cover medium. For any video steganography, the good trade-off among robustness, imperceptibility, and payload must be created and maintained. Even though it has the advantage of capacity, video steganography has the robustness problem especially regarding spatial domain is used to implement it. Transformation operations and statistical attacks can harm secret data. Thus, the ideal video steganography technique must provide high imperceptibility, high payload, and resistance towards visual, statistical and transformation-based steganalysis attacks. Methods One of the most common spatial methods for hiding data within the cover medium is the Least Significant Bit (LSB) method. In this study, an LSB-based video steganography application that uses a poly-pattern key block matrix (KBM) as the key was proposed. The key is a 64 × 64 pixel block matrix that consists of 16 sub-pattern blocks with a pixel size of 16 × 16. To increase the security of the proposed approach, sub-patterns in the KBM are allowed to shift in four directions and rotate up to 270° depending on the user preference and logical operations. For additional security XOR and AND logical operations were used to determine whether to choose the next predetermined 64 × 64 pixel block or jump to another pixel block in the cover video frame to place a KBM to embed the secret data. The fact that the combination of variable KBM structure and logical operator for the secret data embedding distinguishes the proposed algorithm from previous video steganography studies conducted with LSB-based approaches. Results Mean Squared Error (MSE), Structural Similarity Index (SSIM) and Peak Signal-to-Noise Ratio (PSNR) parameters were calculated for the detection of the imperceptibility (or the resistance against visual attacks ) of the proposed algorithm. The proposed algorithm obtained the best MSE, SSIM and PSNR parameter values based on the secret message length as 0.00066, 0.99999, 80.01458 dB for 42.8 Kb of secret message and 0.00173, 0.99999, 75.72723 dB for 109 Kb of secret message, respectively. These results are better than the results of classic LSB and the studies conducted with LSB-based video steganography approaches in the literature. Since the proposed system allows an equal amount of data embedding in each video frame the data loss will be less in transformation operations. The lost data can be easily obtained from the entire text with natural language processing. The variable structure of the KBM, logical operators and extra security preventions makes the proposed system be more secure and complex. This increases the unpredictability and resistance against statistical attacks. Thus, the proposed method provides high imperceptibility and resistance towards visual, statistical and transformation-based attacks while acceptable even high payload.
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Magdi Muhammad, Ibrahim Ahmad. „Pectus Excavatum: A Comparison of the Ravitch Repair with the Nuss Thoracoscopic Technique with a Standard Metal Bar or an Absorbable Bar“. Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery 8, Nr. 3 (Mai 2013): 206–10. http://dx.doi.org/10.1097/imi.0b013e3182a3659c.
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Objective Although pectus excavatum repair has evolved to a minimally invasive technique in prepubescent patients, the best approach in adults is less clearly understood. The aim of this study was to identify the preoperative characteristics, operative variables, and postoperative outcomes in adult patients with pectus excavatum undergoing thoracoscopic repair using different bar stabilizers compared with the open surgical repair. Methods We conducted a prospective study between July 2009 and July 2012 in a single institution. Thirty-one patients (26 men and 5 women) aged 18 to 35 years were randomly assigned into three groups: group A, 9 patients underwent modified Ravitch repair; group B, 11 patients underwent video-assisted thoracoscopic repair using metal stabilizers; and group C, 11 patients underwent video-assisted thoracoscopic repair using absorbable stabilizers. Preoperative, intraoperative, and postoperative variables are compared between all groups. Results In all groups, the preoperative variables were well matched for age, sex, and Haller index. Operative time was 2 hours longer in group A (P = 0.0001). There was no intraoperative complication. Length of hospital stay was 4 days shorter in group A. Morbidity was 23% and composed of pneumothorax (three), wound seroma (two), pleural effusion (one), and stabilizer break (one), occurring more frequently in groups B and C. There was no perioperative mortality. All patients were satisfied with the cosmetic results. Conclusions Repair of pectus excavatum in adult patients can be performed effectively through either open surgical technique or thoracoscopy, with no intraoperative complications and with excellent immediate results. Although the operative time for the Ravitch repair was longer, the hospital stay was significantly shorter than that for the video-assisted method.