Acta IMEKO最新文献_第10页

Analysis and classification of Middle Palaeolithic lithic raw materials from Teixoneres cave: Project overview and initial resultss Teixoneres洞穴中旧石器时代中期石器原料的分析与分类:项目概述与初步成果

Acta IMEKO Pub Date : 2023-09-18 DOI: 10.21014/actaimeko.v12i3.1494

Alicia Muñoz del Pozo, Bruno Gómez de Soler, Guillermo Bustos-Pérez, María Gema Chacón, Andrea Picin, Ruth Blasco, Florent Rivals, Anna Rufà, Jordi Rosell

引用次数: 0

Use of the k-nearest neighbour and its analysis for fall detection on Systems on a Chip for multiple datasets 基于多数据集的片上系统跌倒检测的k近邻及其分析

Acta IMEKO Pub Date : 2023-09-18 DOI: 10.21014/actaimeko.v12i3.1489

Purab Nandi, K. R. Anupama, Himanish Agarwal, Arav Jain, Siddharth Paliwal

{"title":"Use of the k-nearest neighbour and its analysis for fall detection on Systems on a Chip for multiple datasets","authors":"Purab Nandi, K. R. Anupama, Himanish Agarwal, Arav Jain, Siddharth Paliwal","doi":"10.21014/actaimeko.v12i3.1489","DOIUrl":"https://doi.org/10.21014/actaimeko.v12i3.1489","url":null,"abstract":"Fall of an elderly person often leads to serious injuries and death. Many falls occur in the home environment, and hence a reliable fall detection system that can raise alarms with minimum latency is a necessity. Wrist-worn accelerometer-based fall detection systems and multiple datasets are available, but no attempt has been made to analyze the accuracy and precision. Wherever the comparison does exist, it has been run on a cloud. No analysis of the models, convergence, and dataset analysis on Systems on a Chip (SoCs) has ever been attempted. In this paper, we attempt to present why Machine Learning (ML) algorithms in their current state cannot be run on existing SoCs. We have used Snapdragon 410c SoC to do our analytics. In this paper, we have used the kth-nearest neighbour to prove that ML cannot be directly run on SoCs. We have looked at the effect of distance metrics and neighbors as well as the effect of feature extraction on the accuracies and the latencies. In this paper, we establish the need for model compression and data pruning for fall detection using ML/Deep Learning algorithms on SoCs. We have done this by analyzing various datasets on varying architectural parameters.","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":"353 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135209424","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: 1

On the mythic sound of vacuum tubes 关于真空管的神秘声音

Acta IMEKO Pub Date : 2023-09-18 DOI: 10.21014/actaimeko.v12i3.1524

Jean-Pierre Fanton

引用次数: 1

ADC low-complexity modelling identification and mitigation of baseband intermodulation distortion with instantaneous frequency dependence 具有瞬时频率依赖性的ADC低复杂度建模、基带互调失真识别与缓解

Acta IMEKO Pub Date : 2023-09-11 DOI: 10.21014/actaimeko.v12i3.1444

Stanislas Dubois, Bruno Lelong, Jean-Michel Hodé, Guillaume Ferré, Dominique Dallet

引用次数: 1

Experimentation of a PVA-Borax hydrogel for the removal of Paraloid B72® from artifacts of archaeological interest from the National Archaeological Museum in Naples, Italy pva -硼砂水凝胶去除意大利那不勒斯国家考古博物馆考古文物中仿B72®的实验

Acta IMEKO Pub Date : 2023-09-08 DOI: 10.21014/actaimeko.v12i3.1501

Annarita Altobelli, Paola Cennamo, Giorgio Trojsi, Maria Rosaria Barone Lumaga, Andrea Carpentieri, Giancarlo Fatigati

{"title":"Experimentation of a PVA-Borax hydrogel for the removal of Paraloid B72® from artifacts of archaeological interest from the National Archaeological Museum in Naples, Italy","authors":"Annarita Altobelli, Paola Cennamo, Giorgio Trojsi, Maria Rosaria Barone Lumaga, Andrea Carpentieri, Giancarlo Fatigati","doi":"10.21014/actaimeko.v12i3.1501","DOIUrl":"https://doi.org/10.21014/actaimeko.v12i3.1501","url":null,"abstract":"This paper shows the results of an experimentation aimed at the removal of a polymeric film of aged Paraloid B72® originally placed to protect some wooden artifacts belonging to the Egyptian collection of the National Archaeological Museum of Naples (MANN). The study was conducted on two shabtis dated to the 19th Dynasty and a sculpture of Ptah-Sokar-Osiris dating to the late period. Thanks to the collaboration between the National Archaeological Museum of Naples and the Laboratory of Restoration of Wooden Artifacts of the University of Naples Suor Orsola Benincasa, it was possible to conduct an in-depth study of the artifacts, from both an archaeological-historical point of view and from a conservation point of view. This led to the development of the above-mentioned experimentation and to the planning of a proper restoration intervention. The study and experimentation were supported by several diagnostic techniques. In a first stage, non-invasive investigations were carried out to study the execution technique and the state of conservation of the artifacts. This allowed the recognition of the wood species that constituted the three sculptures through optical microscopy, whereas IR reflectography, UV induced fluorescence and X-ray radiation (XRF) were conducted to identify the type and the chemical nature of the pigments. Based on the above analysis, different restoration strategies, based on the removal of Paraloid B72® through a methodology that would act in full respect of the wooden support of the artifacts, were considered. Pros and cons of the different methodologies applied in the recent past for the removal of aged Paraloid from artifact surfaces were analysed. A removal technique based on the use PVA-Borax hydrogel loaded with a solvent mixture was selected. Experiments were conducted to validate the effectiveness of the selected method.","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136363570","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: 1

A Virtual Reality application for the exploration of a modern shipwreck: the case study of the Christoforos wreck 探索现代沉船的虚拟现实应用:以克里斯托弗罗斯号沉船为例

Acta IMEKO Pub Date : 2023-09-07 DOI: 10.21014/actaimeko.v12i3.1506

Matteo Collina, Antonio Lagudi, Fabio Bruno, Vincenzo Cosentino, Raffaele Peluso, Anastasios Ktistis, Angelos Manglis

{"title":"A Virtual Reality application for the exploration of a modern shipwreck: the case study of the Christoforos wreck","authors":"Matteo Collina, Antonio Lagudi, Fabio Bruno, Vincenzo Cosentino, Raffaele Peluso, Anastasios Ktistis, Angelos Manglis","doi":"10.21014/actaimeko.v12i3.1506","DOIUrl":"https://doi.org/10.21014/actaimeko.v12i3.1506","url":null,"abstract":"The paper presents the development of a Virtual Reality (VR) application to perform dives in the Christoforos Shipwreck. The huge wreck lies in the Panormos Bay of Skopelos island (Greece) at a depth of 45 meters. Based on a well-known methodology designed for ancient shipwrecks, the 3D reconstruction of the underwater site has been carried out by adjusting the workflow to survey modern shipwrecks. In particular, the methodology, based on photogrammetry, is capable to provide a highly detailed 3D reconstruction of the shipwreck in a few dives, considering issues like working depth, elevations, and thin elements modelling. Moreover, the paper describes the optimization of the 3D model and the software to be executed in low-performance Head Mounted Display (HMD) devices. The resulting VR application, realized for touristic purposes, recreates the exact ambient conditions inside and outside the water simulating the flora and fauna of the place, the coastline, allowing users to live a recreational and educational experience by virtual diving in the underwater site.","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135097085","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: 1

Recent advancements and perspectives of INRiM’s time-dependent Josephson voltage standards INRiM时间相关约瑟夫森电压标准的最新进展与展望

Acta IMEKO Pub Date : 2023-09-06 DOI: 10.21014/actaimeko.v12i3.1436

Paolo Durandetto, Danilo Serazio, Andrea Sosso

引用次数: 1

The evaluation of main results of the RMO Key and Supplementary comparisons for electrical power and energy 电力和能源RMO的主要结果评价与补充比较

Acta IMEKO Pub Date : 2023-09-06 DOI: 10.21014/actaimeko.v12i3.1441

Oleh Velychko, Tetyana Gordiyenko

引用次数: 1

MobiLithics: Fingerprinting the exploitation of lithic resources during the Upper Pleistocene 移动学:上更新世时期岩石资源开发的指纹图谱

Acta IMEKO Pub Date : 2023-09-06 DOI: 10.21014/actaimeko.v12i3.1478

María Soto, Juan Morales, Hassan Aouraghe, Robert Sala-Ramos, M. Gema Chacón