Safety Assessment and Uncertainty Quantification of Electromagnetic Radiation from Mobile Phones to the Human Head

Abstract

Safety Assessment and Uncertainty Quantification of Electromagnetic Radiation from Mobile Phones to the Human Head Yi M, Wu B, Zhao Y, Su T, Chi Y. Safety Assessment and Uncertainty Quantification of Electromagnetic Radiation from Mobile Phones to the Human Head. Applied Sciences. 2023; 13(14):8107. doi:10.3390/app13148107. Abstract With the rapid development of the mobile communication technology, the design of mobile phones has become more complex, and research on the electromagnetic radiation from mobile phones that reaches the human head has become important. Therefore, first of all, a model of mobile phone daily use was established. Then, based on the established simulation model, the safety of human head exposure to mobile phones was evaluated. The generalized polynomial chaos (gPC) method was used to establish a proxy model of the specific absorption rate (SAR) of the human head at different frequencies to perform a parameter uncertainty quantification (UQ). Finally, the Sobol method was used to quantify the influence of relevant variables on the SAR. The simulation results showed that the gPC method can save time and cost while ensuring accuracy, and the SAR value is greatly influenced by the electromagnetic materials of the mobile phone shell. Combined with the above analysis, this paper can provide reasonable suggestions for the design of mobile phone electromagnetic materials. Open access paper: mdpi.com

AI evidence extraction

Main findings

Using a simulation model of daily mobile phone use, the study evaluated human head exposure safety via SAR and applied generalized polynomial chaos (gPC) for uncertainty quantification across different frequencies. The results indicate gPC can reduce time and cost while maintaining accuracy, and SAR is strongly influenced by the electromagnetic materials of the mobile phone shell.

Outcomes measured

• Specific absorption rate (SAR) in the human head
• Parameter uncertainty quantification (UQ) of SAR
• Sensitivity analysis of variables influencing SAR (Sobol indices)

Limitations

• Simulation/modeling study; no empirical human measurements described in the abstract
• Specific frequencies and SAR values are not reported in the abstract
• Safety conclusions relative to specific exposure limits are not detailed in the abstract

Suggested hubs

• who-icnirp (0.28)
  Focuses on SAR-based safety assessment, which is commonly framed relative to guideline concepts, though no specific guideline is named in the abstract.

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    "study_type": "engineering",
    "exposure": {
        "band": "RF",
        "source": "mobile phone",
        "frequency_mhz": null,
        "sar_wkg": null,
        "duration": "daily use (modeled)"
    },
    "population": "human head (simulation model)",
    "sample_size": null,
    "outcomes": [
        "Specific absorption rate (SAR) in the human head",
        "Parameter uncertainty quantification (UQ) of SAR",
        "Sensitivity analysis of variables influencing SAR (Sobol indices)"
    ],
    "main_findings": "Using a simulation model of daily mobile phone use, the study evaluated human head exposure safety via SAR and applied generalized polynomial chaos (gPC) for uncertainty quantification across different frequencies. The results indicate gPC can reduce time and cost while maintaining accuracy, and SAR is strongly influenced by the electromagnetic materials of the mobile phone shell.",
    "effect_direction": "unclear",
    "limitations": [
        "Simulation/modeling study; no empirical human measurements described in the abstract",
        "Specific frequencies and SAR values are not reported in the abstract",
        "Safety conclusions relative to specific exposure limits are not detailed in the abstract"
    ],
    "evidence_strength": "low",
    "confidence": 0.7399999999999999911182158029987476766109466552734375,
    "peer_reviewed_likely": "yes",
    "keywords": [
        "mobile phone",
        "electromagnetic radiation",
        "human head",
        "specific absorption rate",
        "SAR",
        "generalized polynomial chaos",
        "uncertainty quantification",
        "Sobol method",
        "simulation model"
    ],
    "suggested_hubs": [
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            "slug": "who-icnirp",
            "weight": 0.2800000000000000266453525910037569701671600341796875,
            "reason": "Focuses on SAR-based safety assessment, which is commonly framed relative to guideline concepts, though no specific guideline is named in the abstract."
        }
    ]
}

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