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  • Open Access

    ARTICLE

    Influence of Teachers’ Occupational Stress on Anxiety by Using Cross-Media Teaching Method

    Hean Liu1,2,*, Young Chun Ko3,*

    International Journal of Mental Health Promotion, Vol.24, No.5, pp. 649-664, 2022, DOI:10.32604/ijmhp.2022.019178

    Abstract This paper is to study the conditions of teachers’ occupational stress and anxiety by using cross-media teaching method, and reveals the influence relationship between them. To this end, a questionnaire survey of 228 teachers using cross-media teaching method from 3 schools in Guangdong Province (China) was conducted. The conclusions are as follows: Teachers who use cross-media teaching method have high levels of occupational stress and anxiety, lack of leadership and administrative support, overloaded work, state anxiety and trait anxiety are all at a high level. Under general characteristics differences, gender does not constitute a factor causing occupational stress and anxiety… More >

  • Open Access

    ARTICLE

    Forecasting Mental Stress Using Machine Learning Algorithms

    Elias Hossain1, Abdulwahab Alazeb2,*, Naif Al Mudawi2, Sultan Almakdi2, Mohammed Alshehri2, M. Gazi Golam Faruque3, Wahidur Rahman3

    CMC-Computers, Materials & Continua, Vol.72, No.3, pp. 4945-4966, 2022, DOI:10.32604/cmc.2022.027058

    Abstract Depression is a crippling affliction and affects millions of individuals around the world. In general, the physicians screen patients for mental health disorders on a regular basis and treat patients in collaboration with psychologists and other mental health experts, which results in lower costs and improved patient outcomes. However, this strategy can necessitate a lot of buy-in from a large number of people, as well as additional training and logistical considerations. Thus, utilizing the machine learning algorithms, patients with depression based on information generally present in a medical file were analyzed and predicted. The methodology of this proposed study is… More >

  • Open Access

    ARTICLE

    Experimental and Numerical Study on Mechanical Properties of Z-pins Reinforced Composites Adhesively Bonded Single-Lap Joints

    Yinhuan Yang1,*, Manfeng Gong1, Xiaoqun Xia1, Linzhi Wu2,3

    CMES-Computer Modeling in Engineering & Sciences, Vol.131, No.1, pp. 365-378, 2022, DOI:10.32604/cmes.2022.018535

    Abstract The mechanical properties of Z-pins reinforced composites adhesively bonded single-lap joints (SLJs) under un-directional tension loading are investigated by experimental and numerical methods. Three kinds of joint configurations, including SLJs with three/two rows of Z-pins and “I” array of Z-pins, are investigated by tension test. The failure modes and mechanism of reinforced joints with different Z-pins numbers and alignment are analyzed, and the comparison is performed for the failure strengths of no Z-pins and Z-pins reinforced joints. According to experimental results, failure modes of three kinds of joints are all mixed failure. It turns out that the Z-pins are pulled… More >

  • Open Access

    ARTICLE

    Diversity of Saxicolous Lichens along an Aridity Gradient in Central México

    José Carmen Soto-Correa1, Abraham Saldaña-Vega1, Víctor Hugo Cambrón-Sandoval1, Laura Concostrina-Zubiri2, Mariela Gómez-Romero3,*

    Phyton-International Journal of Experimental Botany, Vol.91, No.4, pp. 827-840, 2022, DOI:10.32604/phyton.2022.017929

    Abstract Lichens are symbiotic organisms that comprise a fungus and a photosynthetic partner wich are recognized as a good indicator of climate change. However, our understanding of how aridity affects the diversity of saxicolous lichens in drylands is still limited. To evaluate the relationship between saxicolous lichen diversity and aridity in a central México dryland, a geographical transect was established of 100 km to build an aridity gradient in the semiarid zone of the State of Querétaro, Mexico, comprising ten sampling sites with a 10 km separation. Species richness, abundance and diversity of soil lichen species were recorded using two sampling methods: the… More >

  • Open Access

    REVIEW

    Emerging environmental stressors and oxidative pathways in marine organisms: Current knowledge on regulation mechanisms and functional effects

    MAURA BENEDETTI, MARIA ELISA GIULIANI, MARICA MEZZELANI, ALESSANDRO NARDI, LUCIA PITTURA, STEFANIA GORBI, FRANCESCO REGOLI

    BIOCELL, Vol.46, No.1, pp. 37-49, 2022, DOI:10.32604/biocell.2022.017507

    Abstract Oxidative stress is a critical condition derived from the imbalance between the generation of reactive oxygen species and the sophisticated network of antioxidant mechanisms. Several pollutants and environmental factors can affect this system through connected mechanisms, indirect relationships, and cascade effects from pre-transcriptional to catalytic level, by either enhancing intracellular ROS formation or impairing antioxidant defenses. This review summarizes the current knowledge on the pro-oxidant challenges from emerging environmental stressors threatening marine organisms, such as pharmaceuticals, microplastics and climate-related ocean changes. Emphasis will be placed on oxidative pathways, including signaling proteins and transcription factors involved in regulation of antioxidant responsiveness.… More >

  • Open Access

    ARTICLE

    Magneto-Thermoelasticity with Thermal Shock Considering Two Temperatures and LS Model

    F. S. Bayones1, S. M. Abo-Dahab2,3, N. S. Hussein4, A. M. Abd-Alla5,*, H. A. Alshehri1

    CMC-Computers, Materials & Continua, Vol.70, No.2, pp. 3365-3381, 2022, DOI:10.32604/cmc.2022.019711

    Abstract The present investigation is intended to demonstrate the magnetic field, relaxation time, hydrostatic initial stress, and two temperature on the thermal shock problem. The governing equations are formulated in the context of Lord-Shulman theory with the presence of bodily force, two temperatures, thermal shock, and hydrostatic initial stress. We obtained the exact solution using the normal mode technique with appropriate boundary conditions. The field quantities are calculated analytically and displayed graphically under thermal shock problem with effect of external parameters respect to space coordinates. The results obtained are agreeing with the previous results obtained by others when the new parameters… More >

  • Open Access

    ARTICLE

    Torsional Wave in a Dissipative Cylindrical Shell Under Initial Stresses

    Mahmoud M. Selim1,2,*, Khaled A. Gepreel3

    CMC-Computers, Materials & Continua, Vol.70, No.2, pp. 3021-3030, 2022, DOI:10.32604/cmc.2022.019579

    Abstract The dispersion relation of torsional wave in a dissipative, incompressible cylindrical shell of infinite length incorporating initial stresses effects is investigated. The governing equation and closed form solutions are derived with the aid of Biot's principle. Phase velocity and damping of torsional wave are obtained analytically and the influences of dissipation and initial stresses are studied in details. We proposed a new method for obtaining the phase and damping velocities of torsional wave in a complex form. Numerical results analyzing the torsional wave propagation incorporating initial stress effects are analyzed and presented in graphs. The analytical and numerical solutions reveal… More >

  • Open Access

    ARTICLE

    Long-Term Loading Test of Reinforced Glulam Beam

    Nan Guo1, Jing Ren1, Ling Li1,*, Yan Zhao2, Mingtao Wu1

    Journal of Renewable Materials, Vol.10, No.1, pp. 183-201, 2022, DOI:10.32604/jrm.2021.015756

    Abstract Due to creep characteristics of wood, long-term loading can cause a significant stress loss of steel bars in reinforced glulam beams and high long-term deflection of the beam midspan. In this study, 15 glulam beams were subjected to a 90-day long-term loading test, and the effects of long-term loading value, reinforcement ratio and prestress level on the stress of steel bars, midspan long-term deflection, and other parameters were compared and analyzed. The main conclusions drawn from this study were that the long-term deflection of the reinforced glulam beams accounted for 22.5%, 20.6%, and 18.2% of the total deflection respectively when… More >

  • Open Access

    ARTICLE

    Stressors and Coping Strategies of Medical Staff in the COVID-19 Pandemic in Wuhan

    Long Liu1,2, Yanlin Shi1,*, Xiyan Fei3, Zhenzhen Wang1,4, Zhi Wang1,5, Li Li6, Lin Ding6, Qiaoyuan Yan7,*

    International Journal of Mental Health Promotion, Vol.23, No.3, pp. 319-330, 2021, DOI:10.32604/IJMHP.2021.015699

    Abstract Exploring whether medical staff perceive stress on the assigned medical tasks, what are the specific sources of stress, what are the tangible sources of support they expected to be helpful, and individual coping with stress to provide more accurate, personal support for psychological crisis. This study uses a cross-sectional descriptive survey adopting convenience sampling among the medical staff who worked for over seven days in the infected areas of one Grade 2A and three Grade 3A hospitals during the COVID-19 pandemic. The assessment includes attitude when receiving tasks, major stressors, factors relieving stress, and personal management of stress. A total… More >

  • Open Access

    ARTICLE

    Numerical Solution of a Problem of Thermal Stresses of a Magnetothermoelastic Cylinder with Rotation by Finite-Difference Method

    F. S. Bayones1, A. M. Abd-Alla2, A. M. Farhan3,4,*

    CMC-Computers, Materials & Continua, Vol.68, No.3, pp. 3339-3352, 2021, DOI:10.32604/cmc.2021.016021

    Abstract The present article deals with the investigation thermal stress of a magnetothermoelastic cylinder subjected to rotation, open or closed circuit, thermal and mechanical boundary conditions. The outer and inner surfaces of the cylinder are subjected to both mechanical and thermal boundary conditions. A The transient coupled thermoelasticity in an infinite cylinder with its base abruptly exposed to a heat flux of a decaying exponential function of time is devised solve by the finite-difference method. The fundamental equations’ system is solved by utilizing an implicit finite-difference method. This current method is a second-order accurate in time and space; it is also… More >

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