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Prevalence and Factors Associated with Smartphone Addiction among Adolescents–A Nationwide Study in Malaysia

International Journal of Mental Health Promotion 2023年第2期25卷 237-247页

作者： Kai Wei Lee Siew Mooi Ching Norsiah Ali Chor Yau Ooi Shahnul Kamal Hj Sidek Azlin Amat Yusnita Yatim Zaiton Yahaya nabihah shamsuddin Idora Ibrahim Fauzia Abdul Majid Fazlin Suhana Othman Nik Suhaila Zakaria Artini Abidin Nor Hazlin Talib Dhashani Sivaratnam Department of Pre-Clinical Sciences Faculty of Medicine and Health SciencesUniversiti Tunku Abdul RahmanKajangSelangor43000Malaysia Department of Family Medicine Faculty of Medicine and Health SciencesUniversiti Putra MalaysiaSerdang43400Malaysia Klinik Kesihatan Masjid Tanah Ministry of Health MalaysiaMasjid Tanah78300Malaysia Department of Family Medicine Universiti Malaysia SarawakKota Samarahan94300Malaysia Klinik Kesihatan Tanjung Malim Ministry of Health MalaysiaTanjung Malim35900Malaysia Klinik Kesihatan Hiliran Ministry of Health MalaysiaKuala Terengganu20300Malaysia Klinik Kesihatan Bandar Pekan Ministry of Health MalaysiaPekan26600Malaysia Klinik Kesihatan Sandakan Ministry of Health MalaysiaSandakan90000Malaysia Klinik Kesihatan Serting Hilir Ministry of Health MalaysiaBandar Seri Jempol72120Malaysia Klinik Kesihatan Kuala Perlis Ministry of Health MalaysiaKuala Perlis02000Malaysia Klinik Kesihatan Kempas Ministry of Health MalaysiaJohor Bahru81200Malaysia Klinik Kesihatan Kuala Kedah Ministry of Health MalaysiaKuala Kedah06600Malaysia Klinik Kesihatan Bandar Gua Musang Ministry of Health MalaysiaGua Musang18300Malaysia Klinik Kesihatan Kepala Batas Ministry of Health MalaysiaKepala Batas13200Malaysia Klinik Kesihatan Kajang Ministry of Health MalaysiaKajang43000Malaysia Department of Ophthalmology Faculty of Medicine and Health SciencesUniversiti Putra MalaysiaSerdang43400Malaysia

Smartphone ownership among adolescents is getting common in this decade especially in Malaysia;Adolescent are strongly devoted to their smartphone and this may lead to smartphone *** have reported that smartphone addiction has become an emerging social and health problem especially among the youth in many countries however there is lack of study among adolescents in *** study aimed to examine the prevalence and factors associated with smartphone addiction among adolescents in *** was a cross-sectional study involving adolescents from 15 primary care clinics throughout the *** were assessed on their smartphone activities using the Malaysian short version of the Smartphone addiction scale(SAS-M-SV).Multiple logistic regression was used to determine the predictors of smartphone addiction among *** study was conducted among 921 adolescents with 49.6%male(n=457).The mean age of adolescents was 16.4±2.4 *** ethnicity distribution were 74.6%Malay,7.3%Chinese,4.7%Indian and 13.4%other *** prevalence of smartphone addiction was 37.1%(342/921);37.4%in male and 36.9%in *** on multiple logistic regression analysis,longer duration of smartphone use per week was associated with higher odds of smartphone addiction among adolescent(odd ratio=1.005%,95%confidence interval=1.000–1.009,p-value=0.039).Smartphone addiction is present in nearly four in ten adolescents in *** who spend longer duration in smartphone usage per week were associated with higher odds of having smartphone *** should be more alert and vigilant about this ***,parents should limit their children from spending too much of time with smartphone in order to prevent their children from getting smartphone addiction.

关键词： Addiction smartphone adolescents Malaysia internet

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Research progress in friction stir processing of magnesium alloys and their metal matrix surface composites: Evolution in the 21^(st )century

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Journal of Magnesium and Alloys 2024年第6期12卷 2091-2146页

作者： Roshan Vijay Marode Tamiru Alemu Lemma nabihah Sallih Srinivasa Rao Pedapati Mokhtar Awang Adeel Hassan Department of Mechanical Engineering Universiti Teknologi PETRONASBandarSeri IskandarPerak 32610Malaysia Department of Mechanical Engineering College of EngineeringThe University of Texas Permian BasinMidland-OdessaUnited States Mechanical Engineering Department Universiti Teknologi BruneiBrunei

Rising concerns about climate change drive the demand for lightweight ***(Mg)alloys are highly valued for their low weight,making them increasingly important in various *** focusing on enhancing the characteristics of Mg alloys and developing their Metal Matrix Composites(MMCs)have gained significant attention worldwide over the past decade,driven by the global shift towards lightweight *** Stir Processing(FSP)has emerged as a promising technique to enhance the properties of Mg alloys and produce ***,FSP adapted to refine grain size from the micro to the nano level and accelerated the development of MMCs due to its solid-state nature and the synergistic effects of microstructure refinement and reinforcement,improving strength,hardness,ductility,wear resistance,corrosion resistance,and fatigue ***,producing defect-free and sound FSPed Mg and Mg-MMCs requires addressing several variables and their interdependencies,which opens up a broad range of practical *** existing reviews on individual FSP of Mg,its alloys,and MMCs,an attempt has been made to analyze the latest research on these three aspects collectively to enhance the understanding,application,and effectiveness of FSP for Mg and its *** review article discusses the literature,classifies the importance of Mg alloys,provides a historical background,and explores developments and potential applications of FSPed Mg *** focuses on novel fabrication methods,reinforcement strategies,machine and tool design parameters,material characterization,and integration with other methods for enhanced *** influence of process parameters and the emergence of defects are examined,along with specific applications in mono and hybrid composites and their microstructure *** study identifies promising reinforcement materials and highlights research gaps in FSP for Mg alloys and MMCs *** conclude

关键词： Magnesium alloys Friction stir processing Metal matrix composites Lightweight Surface modification

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