Acta IMEKO最新文献_第5页

Impedance method application for number detection Escherichia coli in molluscs testing by official laboratory 官方实验室应用阻抗法检测软体动物中大肠埃希氏菌的数量

Acta IMEKO Pub Date : 2023-12-20 DOI: 10.21014/actaimeko.v12i4.1672

Marica Egidio, Raffaele Marrone, Maria Grazia Di Paolo, Salvatore Capo, Emanuele Esposito, Maurizio Della Rotonda, Federico Capuano, Y. Proroga, Alma Sardo, A. Mancusi

{"title":"Impedance method application for number detection Escherichia coli in molluscs testing by official laboratory","authors":"Marica Egidio, Raffaele Marrone, Maria Grazia Di Paolo, Salvatore Capo, Emanuele Esposito, Maurizio Della Rotonda, Federico Capuano, Y. Proroga, Alma Sardo, A. Mancusi","doi":"10.21014/actaimeko.v12i4.1672","DOIUrl":"https://doi.org/10.21014/actaimeko.v12i4.1672","url":null,"abstract":"Bivalve molluscan shellfish (BMS) have an important role in the transmission of some pathogens responsible for food-borne disease because they are filter-feeding animals capable of greatly concentrating certain pathogenic agents (bacteria, viruses, or parasites) present in the water column, like Escherichia coli. The reference method for E. coli testing in bivalves is the most probable number (MPN) method therefore, as this method has some disadvantages, alternative techniques of equivalent accuracy could be used without the drawbacks of the MPN method such as the direct impedance technique. This method is based on the principle that bacteria produce positively or negatively charged end products causing an impedance variation of the medium that can be used to measure their growth. The present study evaluated the efficiency of the direct impedance measuring technique through a series of laboratory tests performed on 6 kg of clams belonging to two different batches. The preliminary obtained data, compared with the MPN reference method and dd-PCR to validate the alternative method, show that the direct impedance technique has the potential to be used in place of TBX culture for confirming E. coli in MPN assays.","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":"129 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139170032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using digital methods in active power measurement 在有功功率测量中使用数字方法

Acta IMEKO Pub Date : 2023-12-20 DOI: 10.21014/actaimeko.v12i4.1590

Francisco Alegria

引用次数: 0

Performance evaluation of pocket echo using an ultrasonic accuracy control phantom 利用超声波精度控制模型对袋式回波进行性能评估

Acta IMEKO Pub Date : 2023-12-20 DOI: 10.21014/actaimeko.v12i4.1382

Norimitsu Shinohara, Y. Kondo

引用次数: 0

Data augmentation for solving industrial recognition tasks with underrepresented defect classes 利用数据增强技术解决缺陷类别代表性不足的工业识别任务

Acta IMEKO Pub Date : 2023-12-19 DOI: 10.21014/actaimeko.v12i4.1320

Lennard Wunsch, Katharina Anding, Galina Polte, Kun Liu, Gunther Notni

{"title":"Data augmentation for solving industrial recognition tasks with underrepresented defect classes","authors":"Lennard Wunsch, Katharina Anding, Galina Polte, Kun Liu, Gunther Notni","doi":"10.21014/actaimeko.v12i4.1320","DOIUrl":"https://doi.org/10.21014/actaimeko.v12i4.1320","url":null,"abstract":"This paper discusses neural network-based data augmentation to increase the performance of neural networks in classification of datasets with underrepresented defect classes. The performance of deep neural networks suffers from an inhomogeneous class distribution in recognition tasks. In particular, applications of deep neural networks to solve quality assurance tasks in industrial production suffer from such unbalanced class distributions. In order to train deep learning networks, a large amount of data is needed to avoid overfitting and to give the network a good generalisation ability. Therefore, a large amount of defect class objects is needed. However, when it comes to producing defect classes, obtaining a dataset for training can be costly. To reduce this costs, artificial intelligence in the form of Generative Adversarial Networks (GANs) can be used to generate images without producing real objects of defect classes. This allows a cost-effective solution for any kind of underrepresented classes. However, the focus of this work is on defect classes. In this paper a comparison of GANs for data augmentation with classical data augmentation methods for simulating images of defect classes in an industrial context is presented. The results show the positive effect of both, classical and GAN-based data augmentation. By applying both methods parallel the best results for defect-class recognition tasks of datasets with underrepresented classes can be achieved.","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":"620 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139172096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Image uncertainty components in video strain measurement of mortar destructive compression testing 砂浆破坏性压缩试验视频应变测量中的图像不确定性成分

Acta IMEKO Pub Date : 2023-12-19 DOI: 10.21014/actaimeko.v12i4.1315

L. Martins, Ana Isabel Marques, Álvaro Silva Ribeiro

{"title":"Image uncertainty components in video strain measurement of mortar destructive compression testing","authors":"L. Martins, Ana Isabel Marques, Álvaro Silva Ribeiro","doi":"10.21014/actaimeko.v12i4.1315","DOIUrl":"https://doi.org/10.21014/actaimeko.v12i4.1315","url":null,"abstract":"This paper describes a video strain measurement solution developed for application in mortar destructive compression testing. Knowledge about the mechanical behavior of this type of construction material, namely up to its fracture, is still superficial due to the less common use of non-contact measurement methods. The performed research was focused on the determination of image coordinate accuracy, based on the experimental quantification of the identified main uncertainty components, using traceable reference patterns, and validated computational toolboxes dedicated to camera parameterization and digital image processing. The obtained results show the following uncertainty contributions: lens distortion - negligible; re-projection errors - 0.21 pixel; 0.10 pixel - spatial resolution; and digital image processing operations - 0.28 pixel. The combination of these uncertainty components resulted in an image coordinate standard uncertainty equal to 0.36 pixel, which was propagated (in addition to the scale coefficient measurement uncertainty) to the selected camera model – orthographic projection with uniform scaling – which supports the video strain measurement.","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":"123 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139172435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Entropy-based explanations of serial position and learning effects in ordinal responses to word list tests 基于熵的词表测试顺序反应中序列位置和学习效应的解释

Acta IMEKO Pub Date : 2023-12-19 DOI: 10.21014/actaimeko.v12i4.1314

J. Melin, Petronella Kettunen, Anders Wallin, L. Pendrill

{"title":"Entropy-based explanations of serial position and learning effects in ordinal responses to word list tests","authors":"J. Melin, Petronella Kettunen, Anders Wallin, L. Pendrill","doi":"10.21014/actaimeko.v12i4.1314","DOIUrl":"https://doi.org/10.21014/actaimeko.v12i4.1314","url":null,"abstract":"Measuring a person’s cognitive abilities, such as memory and learning, is central in many medical conditions to reliably diagnose, treat and monitor disease progression. Common tests typically include tasks of recalling sequences of blocks, digits or words. Recalling a word list is affected by so-called serial position effects (SPE), meaning that words at the beginning or end of the list are more likely to be recalled. In our earlier work, as part of including ordinal and nominal properties in metrology, compensation for ordinality in the raw test scores has been performed with psychometric Rasch measurement theory. Thereafter, SPE have been successfully explained with construct specification equations (CSE) dominated by information theoretical entropy as candidate reference measurement procedures. Here, we present how previous German results for explaining memory difficulty in the immediate recalling (IR, trial 1) task of the Rey’s Auditory Verbal Learning Test (RAVLT) can be replicated with a Swedish cohort (the Gothenburg Mild Cognitive Impairment study, n = 251). This CSE replicability for RAVLT demonstrates comparability across the two cohorts in a kind of inter-laboratory study. Moreover, RAVLT includes repeated trials and learning through practice is expected. How memory task difficulty changes over the eight trials in RAVLT is studied: SPE are not so prominent for the delayed recalling sequences and there is an overall reduction in the task difficulty CSE intercept with trial number, interpreted as an effect of learning. To conclude, the methodology and evidence provided here can be clinically used not only to measure a person’s memory ability but also his or her learning ability, as well as understanding the relationship between learning ability and other cognitive domains.","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":"48 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139172089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The palaeontological heritage of the Capo Vaticano – Monte Poro area (Vibo Valentia, Italy): research, protection, and management 瓦蒂卡诺山-波罗山地区（意大利维博瓦伦西亚）的古生物遗产：研究、保护和管理

Acta IMEKO Pub Date : 2023-12-13 DOI: 10.21014/actaimeko.v12i4.1479

Antonella Cinzia Marra, Roberta Somma, Adriano Guido

{"title":"The palaeontological heritage of the Capo Vaticano – Monte Poro area (Vibo Valentia, Italy): research, protection, and management","authors":"Antonella Cinzia Marra, Roberta Somma, Adriano Guido","doi":"10.21014/actaimeko.v12i4.1479","DOIUrl":"https://doi.org/10.21014/actaimeko.v12i4.1479","url":null,"abstract":"The Late Miocene successions of the Capo Vaticano-Monte Poro (Southern Italy) area, well exposed at Cessaniti – Cava Gentile, preserve a palaeontological record particularly relevant for phylogenetic studies and paleogeographic reconstructions as well as for the popular scientific divulgation and museology. The rich record of Sirenians highly contributed to the knowledge of phylogeny and intraspecific variability of Metaxytherium serresii. The exclusive terrestrial mammal association, having African and Greco-Iranian affinities, allows intriguing suggestions in the paleogeography of the Central Mediterranean. New taphonomic analyses on invertebrates and vertebrates, here presented, suggest that the good fossil preservation is due to the rapid burial of skeletons in a semipermeable mixture of sandy/muddy sediments which were quickly cemented. Late partial dissolution of the carbonate cement among particles made the fossils easy to extract from the sediment. The collaboration among palaeontology researchers, fossil collectors, and local administrators, under the direction of Superintendence and the control of Carabinieri Command for the Protection of Cultural Heritage, allowed the recovery, study, and promotion of this precious paleontological record. The area has a good flow of tourists for the pleasant seaside, and fossiliferous sites could attract cultural tourism, through educational trails and a museum network which valorize the palaeontological and archaeological heritage of the hinterland.","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139181852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reliable use of smart cameras for monitoring biometric parameters in buffalo precision livestock farming 在水牛精准畜牧业中可靠使用智能相机监测生物特征参数

Acta IMEKO Pub Date : 2023-12-12 DOI: 10.21014/actaimeko.v12i4.1638

R. Matera, Leopoldo Angrisani, Gianluca Neglia, Angela Salzano, F. Bonavolontã, Maria Teresa Verde, N. Piscopo, Domenico Vistocco, Oscar Tamburis

引用次数: 0

An app as a tool for detecting migrant females of Anguilla anguilla to support the wild population 作为检测鳗鲡迁徙雌性以支持野生种群的工具的应用程序

Acta IMEKO Pub Date : 2023-12-12 DOI: 10.21014/actaimeko.v12i4.1696

Antonio Casalini, Laura Gentile, Pietro Emmanuele, Riccardo Brusa, Chiara Fusaroli, Matteo Lucchi, Tiberio Tonetti, O. Mordenti

引用次数: 0

Evaluation of spatial patterns accuracy in identifying built-up areas within risk zones using deep learning, RGB aerial imagery, and multi-source GIS data 利用深度学习、RGB 航空图像和多源 GIS 数据识别风险区内建筑密集区的空间模式准确性评估

Acta IMEKO Pub Date : 2023-12-12 DOI: 10.21014/actaimeko.v12i4.1708

A. Vitale, Carolina Salvo, Francesco Lamonaca

{"title":"Evaluation of spatial patterns accuracy in identifying built-up areas within risk zones using deep learning, RGB aerial imagery, and multi-source GIS data","authors":"A. Vitale, Carolina Salvo, Francesco Lamonaca","doi":"10.21014/actaimeko.v12i4.1708","DOIUrl":"https://doi.org/10.21014/actaimeko.v12i4.1708","url":null,"abstract":"In the presence of natural disasters that increasingly affect urban centers, innovative methodologies that can support all the subjects and bodies involved in the disaster management system are increasingly important. This task can be enhanced in urban settings by automatically assessing at-risk buildings through satellite and aerial imagery. However, creating and implementing models with robust generalization capabilities is crucial to achieving this goal. Based on these premises, the authors proposed a deep learning approach utilizing the U-Net model to map buildings within known landslide-prone areas. They trained and validated the U-Net model using the Dubai Satellite Imagery Dataset. The model's prediction accuracy in adapting its results to urban environments in Italy, different from those involved in the training and validation stages, was tested using natural color orthoimages and diverse geographic information system (GIS) data sources. The outcomes indicate that the model's predictions are better in contexts with denser urban fabric. The level of accuracy in dispersed urban shapes worsens as building footprints cover a small portion of the total image area. Overall, the results demonstrate that the suggested methodology can effectively identify buildings in landslide risk zones, demonstrating noteworthy adaptability, making the proposed platform a tool that can be instrumental for decision-makers and urban planners in pre-disaster and post-disaster stages.","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":"50 3-4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139182913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0