Sitting Pressure Analysis Using A Partial Calibrated Pressure Mat
Notice bibliographique
Résumé
Pressure mapping is a non-invasive and reliable method for clinical assessment of the risk of pressure injury. A pressure mat is a common tool for sitting pressure measurement. Misuse or misalignment of inflator bag can form a partially calibrated pressure mat and generate unreliable and imprecise measurement results. The objectives of this study were (1) to develop a procedure that can improve the applicability of a partially operational pressure mat and (2) to assess the precision of the proposed procedure by validating the sitting pressure distribution and center of pressure (COP) against the simultaneous measurement results of a fully calibrated pressure mat. To this end, first, recordings of pressure sensor elements were sorted by the sensor element position. Second, the recordings obtained by the non-calibrated areas were corrected to zero while the recordings of calibrated areas were kept without any correction. Third, the recordings of calibrated and non-calibrated areas were composed accordingly to form the nominal readings of a fully calibrated pressure mat. Then, the nominal readings were processed by our proposed graphical user interface (GUI) which contained the standard pressure data processing methods used by the relevant commercial pressure mat. Finally, the statistical parameters of pressure distribution and COP were calculated. The proposed procedure was validated by the data measured with two "FSA" pressure mats (Vista Medical Ltd, Canada). One partially calibrated and one fully calibrated pressure mats were placed fully aligned to each other on a flat surface. Both pressure mats recorded synchronously in the following experimental tests: 1) a concentrated weight was applied to predetermined positions to investigate the COP offset of two pressure mats and 2) five participants sat still on the pressure mats 5 times each. The COPs obtained for the five predetermined positions measured by two pressure mats were fitted with a least square method. The fitted origin offset of two mats in the X and Y axis is 2.4 mm and 9.35 mm, respectively. For the sitting pressure measurement, the two pressure mats had the same readings of maximum pressure and similar readings of mean pressure, variance and standard deviation with the difference of less than 10% of the reading of the fully calibrated pressure mat. Similar differences were observed in COP value of X and Y axis. In conclusion, our developed procedure together with a GUI could be a suitable solution to the data processing of a partially calibration pressure mat.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,002 |
| Méta-épidémiologie (sens strict) | 0,001 | 0,000 |
| Méta-épidémiologie (sens large) | 0,001 | 0,001 |
| Bibliométrie | 0,001 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,001 | 0,000 |
| Science ouverte | 0,001 | 0,001 |
| Intégrité de la recherche | 0,001 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,003 | 0,001 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».