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  • Open Access

    ARTICLE

    Energy Economic Dispatch for Photovoltaic–Storage via Distributed Event-Triggered Surplus Algorithm

    Kaicheng Liu1,3, Chen Liang2, Naiyue Wu1,3, Xiaoyang Dong2, Hui Yu1,*

    Energy Engineering, Vol.121, No.9, pp. 2621-2637, 2024, DOI:10.32604/ee.2024.050001 - 19 August 2024

    Abstract This paper presents a novel approach to economic dispatch in smart grids equipped with diverse energy devices. This method integrates features including photovoltaic (PV) systems, energy storage coupling, varied energy roles, and energy supply and demand dynamics. The system model is developed by considering energy devices as versatile units capable of fulfilling various functionalities and playing multiple roles simultaneously. To strike a balance between optimality and feasibility, renewable energy resources are modeled with considerations for forecasting errors, Gaussian distribution, and penalty factors. Furthermore, this study introduces a distributed event-triggered surplus algorithm designed to address the More >

  • Open Access

    ARTICLE

    Exploring the Interplay between Job Stress, Work Performance, and Attitudes toward Professional Psychological Help among Employees

    Cong Minh Le1, Son Van Huynh2, Ky Luu2,*, Quynh-Nhi Ngoc Ho2, Van Thi Le Nguyen3, Vinh-Long Tran-Chi2,4

    International Journal of Mental Health Promotion, Vol.26, No.7, pp. 531-545, 2024, DOI:10.32604/ijmhp.2024.050961 - 30 July 2024

    Abstract Objective: This study explores the interplay between job stress, job-related factors, work performance, and attitudes toward seeking professional psychological help among Vietnamese employees. Methods: A total of 374 employees in Vietnam were surveyed using random sampling and an online questionnaire from November 07 to November 28, 2023. Demographic data and self-reported from three scales: The New Job Stress Scale (NJSS), Work Performance (WP), and Attitudes Toward Seeking Professional Psychological Help (ATSPPH_SF) were collected. Results: Significant variations were found across several variables, including forms of work, operating hours, education levels, monthly income, numbers of daily working hours,… More >

  • Open Access

    ARTICLE

    The interplay mechanism between IDH mutation, MGMT-promoter methylation, and PRMT5 activity in the progression of grade 4 astrocytoma: unraveling the complex triad theory

    MAHER KURDI1,*, ALAA ALKHOTANI2, ABDULRAHMAN SABBAGH3, EYAD FAIZO4, AHMED I. LARY5, AHMED K. BAMAGA6, MAJID ALMANSOURI7, BADR HAFIZ8, THAMER ALSHARIF9, SALEH BAEESA8

    Oncology Research, Vol.32, No.6, pp. 1037-1045, 2024, DOI:10.32604/or.2024.051112 - 23 May 2024

    Abstract Background: The dysregulation of Isocitrate dehydrogenase (IDH) and the subsequent production of 2-Hydroxyglutrate (2HG) may alter the expression of epigenetic proteins in Grade 4 astrocytoma. The interplay mechanism between IDH, O-6-methylguanine-DNA methyltransferase (MGMT)-promoter methylation, and protein methyltransferase proteins-5 (PRMT5) activity, with tumor progression has never been described. Methods: A retrospective cohort of 34 patients with G4 astrocytoma is classified into IDH-mutant and IDH-wildtype tumors. Both groups were tested for MGMT-promoter methylation and PRMT5 through methylation-specific and gene expression PCR analysis. Inter-cohort statistical significance was evaluated. Results: Both IDH-mutant WHO grade 4 astrocytomas (n = 22, 64.7%) and IDH-wildtype… More > Graphic Abstract

    The interplay mechanism between IDH mutation, MGMT-promoter methylation, and PRMT5 activity in the progression of grade 4 astrocytoma: unraveling the complex triad theory

  • Open Access

    ARTICLE

    The Impact of Network Topologies and Radio Duty Cycle Mechanisms on the RPL Routing Protocol Power Consumption

    Amal Hkiri1,*, Hamzah Faraj2, Omar Ben Bahri2, Mouna Karmani1, Sami Alqurashi2, Mohsen Machhout1

    CMC-Computers, Materials & Continua, Vol.79, No.2, pp. 1835-1854, 2024, DOI:10.32604/cmc.2024.049207 - 15 May 2024

    Abstract The Internet of Things (IoT) has witnessed a significant surge in adoption, particularly through the utilization of Wireless Sensor Networks (WSNs), which comprise small internet-connected devices. These deployments span various environments and offer a multitude of benefits. However, the widespread use of battery-powered devices introduces challenges due to their limited hardware resources and communication capabilities. In response to this, the Internet Engineering Task Force (IETF) has developed the IPv6 Routing Protocol for Low-power and Lossy Networks (RPL) to address the unique requirements of such networks. Recognizing the critical role of RPL in maintaining high performance,… More >

  • Open Access

    ARTICLE

    RPL-Based IoT Networks under Decreased Rank Attack: Performance Analysis in Static and Mobile Environments

    Amal Hkiri1,*, Mouna Karmani1, Omar Ben Bahri2, Ahmed Mohammed Murayr2, Fawaz Hassan Alasmari2, Mohsen Machhout1

    CMC-Computers, Materials & Continua, Vol.78, No.1, pp. 227-247, 2024, DOI:10.32604/cmc.2023.047087 - 30 January 2024

    Abstract The RPL (IPv6 Routing Protocol for Low-Power and Lossy Networks) protocol is essential for efficient communication within the Internet of Things (IoT) ecosystem. Despite its significance, RPL’s susceptibility to attacks remains a concern. This paper presents a comprehensive simulation-based analysis of the RPL protocol’s vulnerability to the decreased rank attack in both static and mobile network environments. We employ the Random Direction Mobility Model (RDM) for mobile scenarios within the Cooja simulator. Our systematic evaluation focuses on critical performance metrics, including Packet Delivery Ratio (PDR), Average End to End Delay (AE2ED), throughput, Expected Transmission Count More >

  • Open Access

    HOW I DO IT

    How I Do It: The prostatic urethral lift for obstructive median lobes

    Matt S. Ashley1, Jason Phillips2, Gregg Eure3

    Canadian Journal of Urology, Vol.30, No.2, pp. 11509-11515, 2023

    Abstract Millions of men in North America suffering from lower urinary tract symptoms (LUTS) secondary to benign prostatic hyperplasia (BPH) are managed on medical therapy. Most patients, however, report poor adherence, and yet relatively few pursue more definitive surgical solutions. The Prostatic Urethral Lift (PUL) was designed to address many of the patient-identified barriers to surgery, namely iatrogenic sexual dysfunction, incontinence, lengthy recovery and postoperative catheterization. Randomized studies and large real world multicenter and database studies have demonstrated safety and effectiveness of PUL when addressing lateral lobe disease. In recent years further technique and device development… More >

  • Open Access

    ARTICLE

    Improvement in International Prostate Symptom Score after prostatic urethral lifts is dependent on prostatic volume

    Sagar R. Patel, Katherine A. Lowrey, Angeline Johny, Christopher P. Smith

    Canadian Journal of Urology, Vol.30, No.4, pp. 11619-11623, 2023

    Abstract Introduction: Prostatic urethral lifts (PUL) provide improvement in urinary symptoms for men with benign prostatic hyperplasia (BPH). The aim of this study is to determine operative factors associated with improvement in urinary symptoms after PUL in men with bothersome BPH.
    Materials and methods: Men with BPH undergoing PUL at a single, tertiary center were identified from 2019 to 2022. Inclusion criteria included documented prostate volume as well as preoperative and postoperative cystoscopic images of the prostatic urethra. Multivariate regression modeling was performed to determine the predictive factors—including prostate volume, number of implants, and degree of unobstructed prostatic… More >

  • Open Access

    ARTICLE

    Temporarily implanted nitinol device versus prostatic urethral lift for minimally invasive surgical treatment of benign prostatic hyperplasia with lower urinary tract symptoms: a matching-adjusted indirect comparison

    Kenneth M. Kernen1, Shalina Omar2, Bradley Goodnight2, Paul Skodny3, Stuart Bruce3, Tiffany M. Yu2

    Canadian Journal of Urology, Vol.30, No.5, pp. 11676-11685, 2023

    Abstract Introduction: To evaluate the safety and efficacy of the temporarily implanted nitinol device (iTind) versus prostatic urethral lift (PUL) for minimally invasive surgical treatment of lower urinary tract symptoms secondary to benign prostatic hyperplasia in a matching-adjusted indirect comparison (MAIC).
    Materials and methods: Seven clinical trials were identified via a systematic literature review. Individual patient data from iTind trials and aggregated data from PUL trials were used in the MAIC. Safety and efficacy outcomes at 12 months post-treatment were compared between the adjusted iTind population and the pooled PUL population.
    Results: iTind patients were significantly less likely than… More >

  • Open Access

    ARTICLE

    Aquablation versus TURP: 5-year outcomes of the WATER randomized clinical trial for prostate volumes 50-80 mL

    Kussil Oumedjbeur1, Nicholas J. Corsi2, David Bouhadana3, Ahmed Ibrahim4, David-Dan Nguyen5, Imad Matta4, Adel Arezki3, Iman Sadri3, Tawfik Elsherbini6, Naeem Bhojani4, Dean S. Elterman5, Bilal Chughtai7, Brian T. Helfand8, Alexander P. Glaser8, Vincent Misrai9, Steven Kaplan10, Peter Gilling11, Neil Barber12, Mihir Desai13, Gopal H. Badlani14, Alexis E. Te7, Claus G. Roehrborn15, Kevin C. Zorn4

    Canadian Journal of Urology, Vol.30, No.5, pp. 11650-11658, 2023

    Abstract Introduction: To report the 5-year efficacy and safety of Aquablation compared with transurethral resection of the prostate for the management of lower urinary tract symptoms secondary to benign prostatic hyperplasia in men with prostate volumes 50-80 mL.
    Materials and methods: In a large double-blinded, multicenter, and prospective randomized controlled trial, 96 randomized men with 50-80 mL prostates who underwent Aquablation or transurethral prostate resection were prospectively identified for subgroup analysis. Follow up was performed for up to 5 years. The primary efficacy endpoint was the reduction in International Prostate Symptom Score (IPSS) at 6 months. The primary… More >

  • Open Access

    ARTICLE

    Capacity Optimization Configuration of Hydrogen Production System for Offshore Surplus Wind Power

    Yanshan Lu1, Binbin He1, Jun Jiang1, Ruixiao Lin2,*, Xinzhen Zhang2, Zaimin Yang3, Zhi Rao3, Wenchuan Meng3, Siyang Sun3

    Energy Engineering, Vol.120, No.12, pp. 2803-2818, 2023, DOI:10.32604/ee.2023.042328 - 29 November 2023

    Abstract To solve the problem of residual wind power in offshore wind farms, a hydrogen production system with a reasonable capacity was configured to enhance the local load of wind farms and promote the local consumption of residual wind power. By studying the mathematical model of wind power output and calculating surplus wind power, as well as considering the hydrogen production/storage characteristics of the electrolyzer and hydrogen storage tank, an innovative capacity optimization allocation model was established. The objective of the model was to achieve the lowest total net present value over the entire life cycle.… More >

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