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2. SECURITY INSPECTION IMAGE PROCESSING METHODS APPLYING WAVELET TRANSFORM FILTERS ON TERAHERTZ ACTIVE IMAGES

Author

Samuel Danso, Shang Liping, Deng Hu, Justice Odoom, Liu Quancheng, and Mmer Mushtag

Subjects
Terahertz image, wavelet transform, biorthogonal, Gaussian noise, salt & pepper noise, Technology (General), T1-995, General Works, Social sciences (General), H1-99
Abstract

Clarity of Terahertz image is essential at various security checkpoints to avoid life’s dangers and treats. However, Terahertz images are distorted by noise. Noise is frequently present in digital images during the image collection, coding, delivery, and processing phases. It is extremely difficult to remove noise from digital images without prior knowledge of the noise model. Wavelet transforms have gained popularity as a tool for image denoising. In this paper, we advance a solution to this challenge using Global Threshold selection as well as wavelet transform filters. When compared to denoising Gaussian noise at the same percentage induced, biorthogonal is the most effective denoising filter for salt and pepper noise. As the salt and pepper noise increases from 20% to 60%, the hidden security image as our target varnishes or is overpowered by the induced salt and pepper noise. We discover that despite the fact that the bior 4.4 and sym4.0 wavelet transform filters prove powerful in denoising the image, it is still not clearer and that when an image is tainted by Gaussian noise, wavelet shrinkage denoising is nearly perfect in both bior4.4 and sym 4.0, whereas when the image is tainted by salt & pepper noise, wavelet shrinkage denoising is nearly perfect in both bior4.4 and sym 4.0.

Published
2022
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3. Motivation and perception of Hong Kong university students about social media news

Author

Kong, Qiuyi, Lai-Ku, Kelly-Yee, Deng, Liping, and Yan-Au, Apple-Chung

Subjects
BJ. Communication, G. Industry, profession and education., GH. Education.
Abstract

With the prevalence of social media in a digital age, accessing news on social media has become a daily routine of university students’ lives. However, little research has been done to examine their social media news use in detail, especially in Asian countries. To fill this gap, we aimed to examine what motivated university students to seek news on social media, to what extent they perceived they were in control of the influences of news, and whether news motives were related to their levels of news media literacy across three domains: (a) authors and audiences; (b) messages and meaning, and (c) representation and reality. One hundred and forty-seven university students from a university in Hong Kong participated. Among the four news motives, socializing was the most powerful predictor for news use on social media. Most students believed they were in control of news influences and demonstrated a high level of news media literacy, and those who believed themselves to be in control of news influences showed a higher level of news media literacy. In this sense, high news-literate students were more likely to seek news for socializing as compared to their low news-literate counterparts. Insights on educating students to use social media in a positive and smart way were discussed.

Published
2021

4. Motivación y percepción de los universitarios de Hong Kong sobre noticias en las redes sociales

Author

Kelly-Yee Lai-Ku, Apple-Chung Yan-Au, Liping Deng, and Qiuyi Kong

Subjects
Cultural Studies, Consumo digital, media_common.quotation_subject, Control (management), Media literacy, 050801 communication & media studies, News, Digital consumption, Literacy, Education, 0508 media and communications, Uso de medios, Asian country, Social media, Redes sociales, Daily routine, News media, media_common, Media use, Universidad, University, Communication, 05 social sciences, Media studies, 050301 education, Alfabetización mediática, Social networking sites, Psychology, 0503 education, Meaning (linguistics), Noticias
Abstract

Con la prevalencia de las redes sociales en la era digital, acceder a las noticias en redes sociales se ha convertido en una rutina cotidiana en la vida de los universitarios. Sin embargo, se ha realizado mínima investigación sobre el uso de noticias en redes sociales, especialmente en los países asiáticos. Para colmar esta laguna, pretendemos examinar qué motivó a los universitarios a buscar noticias en redes sociales, en qué medida percibían que controlaban las influencias noticieras, y si las motivaciones noticieras se relacionaban con su nivel de alfabetismo mediático en tres dominios: a) autores y audiencias; b) mensajes y significados, y c) representación y realidad. Participaron 147 estudiantes de una universidad de Hong Kong. Entre las cuatro motivaciones, la socialización fue el indicador más poderoso. La mayoría de los estudiantes creían que podían controlar la influencia noticiera, demostrando un alto alfabetismo mediático. Los estudiantes con alto nivel de alfabetismo mediático son más propensos a buscar noticias para socializar, en comparación con las contrapartes con bajo nivel de alfabetismo. Se debatieron perspectivas sobre cómo educar a los estudiantes para emplear de una forma positiva e inteligente las redes sociales, With the prevalence of social media in a digital age, accessing news on social media has become a daily routine of university students’ lives. However, little research has been done to examine their social media news use in detail, especially in Asian countries. To fill this gap, we aimed to examine what motivated university students to seek news on social media, to what extent they perceived they were in control of the influences of news, and whether news motives were related to their levels of news media literacy across three domains: (a) authors and audiences; (b) messages and meaning, and (c) representation and reality. One hundred and forty-seven university students from a university in Hong Kong participated. Among the four news motives, socializing was the most powerful predictor for news use on social media. Most students believed they were in control of news influences and demonstrated a high level of news media literacy, and those who believed themselves to be in control of news influences showed a higher level of news media literacy. In this sense, high news-literate students were more likely to seek news for socializing as compared to their low news-literate counterparts. Insights on educating students to use social media in a positive and smart way were discussed

Published
2021

5. Development of an integrative learning program for community dwelling old people with dementia

Author

Thomas Kwok Shing Wong, Yang Yunhua, Chen Jinghan, Carmen Ka Man Lee, Zhou Ying, Jiang Liping, Tang Qiubi, and Joanne Wai Yee Chung

Subjects
Dementia, Neuroplasticity, Learning, Psychiatric Nursing, Community Health Services, Nursing Methodology Research, Nursing, RT1-120
Abstract

Objective: to develop an integrative learning program for people with dementia. Method: a methodological study was conducted using Delphi technique to develop the learning program, followed by a feasibility test. An expert panel was invited to develop the integrative learning program based on the neuroplasticity and learning framework. A feasibility test was conducted to evaluate the implementation of the program in two centers after the training of personnel who run the program. Verbatim transcripts of case conferences were coded, analyzed, and collapsed into themes and sub-themes by consensus. Results: there was no indication for content modification during the period of program implementation. Qualitatively, the participating older adults showed improvement in communications, emotions, connectedness with self and others, and well-being. Conclusion: the integrative learning program was uneventfully implemented with promising results. The program is ready for full-scale research on its efficacy in multiple centers to obtain more robust evidence.

Published
2021
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6. Effect of FOCUS-PDCA procedure on improving self-care ability of patients undergoing colostomy for rectal câncer

Author

Yingai Jin, Chunyu Li, Xian Zhang, Yan Jin, Liping Yi, and Jinhua Cui

Subjects
Quality Management, Colostomy, Rectal Neoplasms, Self Care, Aptitude, Oncology Nursing, Public aspects of medicine, RA1-1270, Nursing, RT1-120, Mental healing, RZ400-408, Education (General), L7-991
Abstract

ABSTRACT Objective: To investigate the effect of the FOCUS-PDCA procedure on the self-care ability of patients undergoing colostomy for rectal cancer. Method: A nonrandomized controlled trial of 160 patients with rectal cancer undergoing colostomy. The control group received routine nursing intervention, and the observation group received the FOCUS-PDCA procedure. The self-care ability of the two groups was investigated 1 week and 1 month after surgery, and a comparative analysis was made between the groups. Results: One week after surgery, the self-care ability of rectal cancer patients with colostomy increased from 39.09 points before implementation of the FOCUS-PDCA procedure to 60.15 points after implementation; an increase of 21.06%. One month after surgery, the self-care ability increased from 61.50 points to 83.13 points after implementation of the FOCUS-PDCA procedure; an increase of 21.63%. Conclusion: Application of the FOCUS-PDCA procedure improved the self-care ability of rectal cancer patients undergoing colostomy, improved their physical and mental health, reduced colostomy complications, and improved their quality of life. The results suggest that it is worth applying FOCUS-PDCA more widely.

Published
2021
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