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  • Open Access

    REVIEW

    Adolescent psychological resilience and subjective well-being: A meta-analysis

    Jie Wu, Zijian Zhang, Tingye Chai, Yunbo Shen, Xianglian Yu*

    Journal of Psychology in Africa, Vol.35, No.6, pp. 771-790, 2025, DOI:10.32604/jpa.2025.067273 - 30 December 2025

    Abstract A meta-analysis was conducted to systematically examine the relationship between adolescent psychological resilience and subjective well-being, including its tripartite components and potential moderators. Relevant literature was systematically searched across domestic and international databases, yielding 112 eligible studies comprising 115 independent samples (N = 78,018 adolescents). Significant positive correlations were identified between psychological resilience and both subjective well-being (r = 0.508, p < 0.001) and its components: life satisfaction (r = 0.470, p < 0.001) and positive affect (r = 0.465, p < 0.001). A weak negative correlation emerged with negative affect (r = −0.253, p < 0.001). Heterogeneity analysis revealed… More >

  • Open Access

    ARTICLE

    Relationship between Resilience and Physical Activity in Adolescents: The Role of Family Functioning

    Dingmeng Mao1, Guannan Bai2, Lin Yang3,4,5, Jane Jie Yu1,*

    International Journal of Mental Health Promotion, Vol.27, No.9, pp. 1221-1235, 2025, DOI:10.32604/ijmhp.2025.069810 - 30 September 2025

    Abstract Background: Physical inactivity among adolescents has become a global public health challenge, with over 80% failing to meet the recommendations of the WHO for activity levels. Existing research predominantly examines how physical activity (PA) enhances resilience, while the predictive role of resilience in PA, particularly its interaction with family factors, has received limited attention. This study aimed to examine the associations between resilience and PA among adolescents, focusing on family functioning and gender differences. Methods: In this cross-sectional study, a total of 909 Chinese adolescents (463 males and 446 females, aged 13.3 ± 0.5 years)… More >

  • Open Access

    ARTICLE

    Critical Concentration of Zinc for Increasing Production and Quality of Mangosteen Fruit in West Sumatera, Indonesia

    Martias1, Dewi Fatria2, Adha Fatmah Siregar2, Raden Heru Praptana3,*, Antonius Kasno3, Muhammad Prama Yufdy4, Riska4, Ni Luh Putu Indriyani4, Affandi4, Tri Budiyanti4, Sri Hadiati4, Ellina Mansyah4, Irwan Muas4, Jumjunidang4, Mizu Istianto4, Djoko Mulyono4, Intan Gilang Cempaka4, Triyani Dewi4, Agus Supriyo3, Bambang Nuryanto3

    Phyton-International Journal of Experimental Botany, Vol.93, No.11, pp. 2767-2786, 2024, DOI:10.32604/phyton.2024.055686 - 30 November 2024

    Abstract West Sumatera is one of the largest mangosteen production centers in Indonesia. After the 2019 harvest season, there were variations in fruit production and quality which indicated symptoms of zinc (Zn) deficiency. This study evaluates the status of Zn for increasing the production and quality of mangosteen fruit Ratu Kamang cv. The study was conducting using the observation method in Lima Puluh Kota, West Sumatera from January to December 2020. This study used ten mangosteen trees aged 23 years in three locations selected purposively. Parameters observed included soil properties, leaf nutrients, number of fruits; fruit,… More >

  • Open Access

    ARTICLE

    Adsorption of Malachite Green Using Activated Carbon from Mangosteen Peel: Optimization Using Box-Behnken Design

    Nabila Eka Yuningsih, Latifa Ariani, Suprapto Suprapto, Ita Ulfin, Harmami Harmami, Hendro Juwono, Yatim Lailun Ni’mah*

    Journal of Renewable Materials, Vol.12, No.5, pp. 981-992, 2024, DOI:10.32604/jrm.2024.049109 - 17 July 2024

    Abstract In this research, activated carbon from mangosteen peel has been synthesized using sulfuric acid as an activator. The adsorption performance of the activated carbon was optimized using malachite green dye as absorbate. Malachite green dye waste is a toxic and non-biodegradable material that damages the environment. Optimization of adsorption processes was carried out using Response Surface Methodology (RSM) with a Box-Behnken Design (BBD). The synthesized activated carbon was characterized using FTIR and SEM instruments. The FTIR spectra confirmed the presence of a sulfonate group (-SOH) in the activated carbon, indicating that the activation process using… More >

  • Open Access

    ARTICLE

    Eighteen-Element Antenna for Metal-Rimmed Smartphone Sub-6 GHz LTE42 Band Applications

    Saqer S. Alja’Afreh1,*, Mallak H. Alshamaileh1, Eqab Almajali2, Jawad Yousaf3, Amir Altaf4

    CMC-Computers, Materials & Continua, Vol.73, No.2, pp. 3181-3198, 2022, DOI:10.32604/cmc.2022.029863 - 16 June 2022

    Abstract Due to the limited space and large mutual coupling levels, the design of sub-6 GHz massive Multi-Input Multi-Output (m-MIMO) smartphone antenna system attracts antennas’ designers and engineers worldwide. Therefore, this paper presents 18-element m-MIMO antenna system that covers the long-term evolution 42 (LTE42) frequency band (3.4–3.6 GHz) for the fifth generation (5G) applications in metallic frame smartphones. The proposed array system is etched on the long sides of a metal rim of the mobile chassis symmetrically, which is electrically connected to the system ground plane with zero ground clearance. A low-profile frame of height 7… More >

  • Open Access

    ARTICLE

    ESSD: Energy Saving and Securing Data Algorithm for WSNs Security

    Manar M. Aldaseen1, Khaled M. Matrouk1, Laiali H. Almazaydeh2,*, Khaled M. Elleithy3

    CMC-Computers, Materials & Continua, Vol.73, No.2, pp. 3969-3981, 2022, DOI:10.32604/cmc.2022.028520 - 16 June 2022

    Abstract The Wireless Sensor Networks (WSNs) are characterized by their widespread deployment due to low cost, but the WSNs are vulnerable to various types of attacks. To defend against the attacks, an effective security solution is required. However, the limits of these networks’ battery-based energy to the sensor are the most critical impediments to selecting cryptographic techniques. Consequently, finding a suitable algorithm that achieves the least energy consumption in data encryption and decryption and providing a highly protected system for data remains the fundamental problem. In this research, the main objective is to obtain data security… More >

  • Open Access

    ARTICLE

    Performance Enhancement of PV Based Boost Cascaded Fifteen Level Inverter for AC Loads

    M. P. Viswanathan*, B. Anand

    Computer Systems Science and Engineering, Vol.42, No.1, pp. 165-181, 2022, DOI:10.32604/csse.2022.020400 - 02 December 2021

    Abstract In this research work, single-stage fifteen levels cascaded DC-interface converter (CDDCLC) is proposed for sun arranged photovoltaic technology (PV) applications. The proposed geography is joined with help DC chopper and H-associate inverter to upgrade the power converter to accomplish the diminished harmonic profile. In assessment with the customary inverter structures, the proposed system is used with diminished voltage stress, decreased switch count and DC source tally. The proposed research work with cascaded DC link converter design requires three DC sources for combining fifteen-level AC output. This investigation structure switching technique is phase opposition and disposition More >

  • Open Access

    ARTICLE

    Teensensor: Gaussian Processes for Micro-Blog Based Teen’S Acute and Chronic Stress Detection

    Yuanyuan Xue1,2, Qi Li1, LingFeng1

    Computer Systems Science and Engineering, Vol.34, No.3, pp. 151-164, 2019, DOI:10.32604/csse.2019.34.151

    Abstract Stress is a common problem all over the world. More and more teenagers today have to cope with different stressor events coming from school, family, peer relation, self-cognition, romantic relation, etc. Over-stress without proper guidance will lead to a series of potential problems including physical and mental disorders, and even suicide due to the shortage of teen’ s psychological endurance and controllability. Therefore, it is necessary and important to timely sense adolescents’ stress and help them release the stress properly. In this paper, we present a micro-blog based system called TeenSensor, aiming to detect teens… More >

  • Open Access

    ARTICLE

    A Pathway to Explore the Hidden Specialty in the Design of Fifteen Level Inverter in Grid Connected PV System

    C. Gopinath1, *, M. Rajvikram1

    CMES-Computer Modeling in Engineering & Sciences, Vol.115, No.3, pp. 359-386, 2018, DOI:10.3970/cmes.2018.06143

    Abstract This research paper proposes a single phase fifteen level inverter for a grid connected PV system. The proposed inverter is also called cascaded asymmetric multilevel inverter. By adopting appropriate hybrid modulation technique improved output voltage is obtained with minimum number of power electronic switches. By reducing the number of gate triggering circuits of the switches, the size and power consumption of the driving circuits can be reduced. The total harmonic distortion of the output of the inverter is improved by this inverter. The proposed inverter developed by cascading a full bridge inverter with modified H More >

  • Open Access

    ARTICLE

    Seventeen spp. new records for the Moss flora of Iraq

    Farhad H. Aziz

    Phyton-International Journal of Experimental Botany, Vol.80, pp. 35-46, 2011, DOI:10.32604/phyton.2011.80.035

    Abstract Samples and specimens of mosses were collected in different parts of Erbil, Sulaimani, Duhok and Even Kirkuk provinces in Iraq Kurdistan Region, since 1998 to April 2010. This collection could be taken as the representative species of mosses on the soil surface, rocks and tree barks of either terrestrial and aquatic habitats of foothills, mountains and plains. A total of 67 species distributed in 32 genera, 16 families and 9 orders were found. Among them there were 17 species in 10 genera, the 2 families Schistogaceae and Ephemeraceae and the single order Schistostegales. The rarest More >

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