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A low-cost machine learning process for gait measurement using an electrostatic sensors network 利用静电传感器网络进行步态测量的低成本机器学习过程
Q3 Engineering Pub Date : 2024-03-26 DOI: 10.21014/actaimeko.v13i1.1323
Blandine Pichon, Eric Benoit, Stéphane Perrin, Alexandre Benoit, Nicolas Berton, Dorian Coves, Julien Cruvieux, Youssouph Faye
Continuous in-house measurement of gait of elderly People is relevant for health professionals. To be adopted by most, the system must be low-cost and non-intrusive. In this paper we present a solution for measuring the walking velocity based on a network of 4 electric potential sensors. In our experiments, we also add PIR sensors used in our previous work for comparative purposes. A temporary Depth camera is used for training the model on walking velocity. The first results presented are obtained without machine learning. Then a machine learning regression method is tested to reduce the uncertainty of the sensors. The results show that the electric potential sensors are suitable for the in-house measurement of walking speed of elderly people. The uncertainty is lower than the target of 0.15 m s-1 known as the upper limit for detecting a reduction in speed due to illness. As for the PIR sensors, electric potential sensors consume very little energy, they are inexpensive, they can be embedded and hidden in the home which makes them less -intrusive and furthermore have better accuracy.
对老年人的步态进行连续的内部测量对保健专业人员来说非常重要。要想被大多数人采用,该系统必须成本低、无干扰。在本文中,我们提出了一种基于 4 个电动势传感器网络的步行速度测量解决方案。在实验中,我们还加入了之前工作中使用的 PIR 传感器,以进行比较。临时深度摄像头用于训练行走速度模型。最初的结果是在没有机器学习的情况下获得的。然后测试了一种机器学习回归方法,以减少传感器的不确定性。结果表明,电动势传感器适用于内部测量老年人的行走速度。其不确定性低于 0.15 米/秒-1 的目标值,而 0.15 米/秒-1 是检测因疾病导致速度下降的上限。与 PIR 传感器相比,电动势传感器能耗低,价格便宜,可以嵌入和隐藏在家中,因此干扰性更小,而且精度更高。
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引用次数: 1
Remote post-mortem veterinary meat inspections in bovine and analysis of post-mortem inspection outcomes: preliminary results 牛死后兽医肉类远程检查和死后检查结果分析:初步结果
Q3 Engineering Pub Date : 2024-03-26 DOI: 10.21014/actaimeko.v13i1.1686
M. F. Peruzy, Valeria Vuoso, Claudio Felicani, Giuseppe Cotturone, Kurt Houf, N. Murru
The work aimed to collect and analyse data obtained from the routine post-mortem veterinary inspection of bovine viscera and to evaluate the reliability of remote veterinary meat inspections. A comparative study was conducted on viscera belonging to 30 bovines.  For each bovine, findings were recorded simultaneously by two veterinarians, one conducting an on-site post-mortem inspection and another performing the remote inspection through a tablet.  A total of 10 (33.33 %) bovines were healthy. In a total of 18 (60.00 %) and 11 animals (33.00 %) pulmonary and hepatic lesions were respectively, observed. The most reported finding was pleuritis recorded in 17 animals (56.67 %), followed by pneumonia (16.67 %). The agreement between the two methods used for the post-mortem inspection of bovines was generally high. In an overall 73.33 % of bovines the findings recorded by the veterinarian who conducted the on-site post-mortem inspection and those recorded by the veterinarian performing the remote inspection were overlapping. In conclusion, a move to a remote post-mortem inspection has a negligible negative impact on public health since the most frequently detected lesions recorded were of scarce significance and in most cases, they were effectively detected by the veterinarian through the tablet.
这项工作旨在收集和分析牛内脏死后兽医例行检查获得的数据,并评估远程兽医肉类检查的可靠性。对 30 头牛的内脏进行了比较研究。 每头牛的检查结果由两名兽医同时记录,一名兽医在现场进行宰后检查,另一名兽医通过平板电脑进行远程检查。 共有 10 头牛(33.33%)健康。分别有 18 头(60.00 %)和 11 头(33.00 %)牛出现肺部和肝部病变。报告最多的病变是胸膜炎,有 17 头牛(56.67%)出现胸膜炎,其次是肺炎(16.67%)。用于牛只死后检查的两种方法之间的一致性普遍较高。在总计 73.33% 的牛只中,现场验尸兽医记录的结果与远程验尸兽医记录的结果是一致的。总之,改用远程验尸对公共卫生的负面影响微乎其微,因为最常检测到的病变并不重要,而且在大多数情况下,兽医都能通过平板电脑有效检测到这些病变。
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引用次数: 1
Bio-logging reveals heritable patterns of natural behaviours in sheep 生物记录揭示绵羊自然行为的遗传模式
Q3 Engineering Pub Date : 2024-03-25 DOI: 10.21014/actaimeko.v13i1.1733
Joss Langford, Tim Fawcett, Emily Price, Destiny Bradley, Alastair J Wilson, Darren P. Croft
The measurement of behaviour in extensively managed livestock for the assessment of welfare remains a challenge. Bio-logging devices offer the opportunity to collect continuous behavioural data over long periods while animals are in their normal physical environment. Using collar-measured acceleration from 84 ewes over 28 days in a commercial flock, we built two-component daily phenotypic profiles with data-driven analysis techniques not reliant on human observations. Our analysis demonstrates the moderate repeatability of both components (0.58 ± 0.06 and 0.53 ± 0.05), the heritability of one component (0.53 ± 0.15), and environmental associations with wind chill index (−0.63 ± 0.13), and day length (−0.66 ± 0.19). We discuss these results in relation to previous work, showing that our methods of measurement and analysis are capable of revealing the daily patterns of behaviour in sheep and how these are influenced by the physical environment and genetics. This approach can be generalised to assess behavioural phenotypes and the determinants of behaviour in other breeds or species.
测量广泛管理的牲畜的行为以评估其福利仍然是一项挑战。生物记录装置为长期收集动物在正常物理环境中的连续行为数据提供了机会。利用项圈测量的商业羊群中 84 只母羊 28 天内的加速度,我们通过数据驱动的分析技术建立了不依赖人工观察的双组分日表型曲线。我们的分析表明了两个分量的中等重复性(0.58 ± 0.06 和 0.53 ± 0.05)、一个分量的遗传率(0.53 ± 0.15)以及与风寒指数(-0.63 ± 0.13)和日长(-0.66 ± 0.19)的环境关联。我们结合以前的工作讨论了这些结果,表明我们的测量和分析方法能够揭示绵羊的日常行为模式,以及这些模式如何受到物理环境和遗传学的影响。这种方法可用于评估其他品种或物种的行为表型和行为决定因素。
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引用次数: 1
Portable milkmeters for the rapid in-field collection of milkability phenotypes in dairy goats 用于现场快速收集奶山羊挤奶表型的便携式测奶器
Q3 Engineering Pub Date : 2024-03-25 DOI: 10.21014/actaimeko.v13i1.1659
S. Magro, Carlo Boselli, A. Costa, M. De Marchi
The present study aimed to investigate the phenotypic factors affecting the variability of the milkability traits measured in Italian dairy goats through a portable milkmeter in commercial herds. Milkability descriptors combine either milk production, milking time, or milk flow and are important to consider for reasons related to udder health, e.g., they can be exploited for large- or small-scale monitoring of mechanical milking stress. The milkability traits recorded in this study were analyzed through a linear model. Almost all the traits were influenced by lactation stage, but only part of them were affected by parity and season of sampling. With exception of blind phase (overmilking indicator), estimates decreased along the lactation, suggesting that fresh animals – especially pluriparous - are those with the greatest productivity, milk emission flow, and milking time. As regards the effect of parity, for the majority of traits the estimates of primiparous were lower compared to those of pluriparous. Monitoring milking ability of goats through milkmeters in the field can be a strategy to evaluate milking procedures of farmers and could thereby boost the implementation and effectiveness of udder health improvement schemes with positive implications on milk quality and farm profitability.
本研究旨在调查影响通过便携式挤奶器测量的意大利奶山羊可挤奶性状变异性的表型因素。可挤奶性描述指标包括产奶量、挤奶时间或奶量,由于与乳房健康有关的原因,这些指标非常重要,例如,它们可用于大规模或小规模监测机械挤奶压力。本研究记录的挤奶性状通过线性模型进行分析。几乎所有性状都受到泌乳阶段的影响,但只有部分性状受到奇数和采样季节的影响。除了盲期(过度挤奶指标)外,其他指标在泌乳期都有所下降,这表明新产牛(尤其是多胎牛)的生产性能、乳汁排放流量和挤奶时间都最高。至于奇偶性的影响,就大多数性状而言,初产母羊的估计值低于多胎母羊。在田间通过奶量计监测山羊的挤奶能力可以作为评估牧场主挤奶程序的一种策略,从而促进乳房健康改良计划的实施和有效性,对牛奶质量和牧场盈利能力产生积极影响。
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引用次数: 1
CortiCow project: development of a rapid and non-invasive lateral flow immunoassay for the evaluation of cortisol levels in bovine saliva CortiCow 项目:开发用于评估牛唾液中皮质醇水平的快速无创侧流免疫测定法
Q3 Engineering Pub Date : 2024-03-23 DOI: 10.21014/actaimeko.v13i1.1623
Elena Diaz Vicuna, L. Anfossi, F. Di Nardo, Claudio Forte, L. Ozella
Being able to obtain an objective and repeatable measurement of stress levels from a single subject represents a primary issue in animal welfare science, especially in relation to cattle farming. A potential solution has been recently identified in the determination of cortisol’s salivary levels: a non-invasive method strictly related to acute stress. The development of an on-field, easy-to-use method to perform the analysis is yet to be validated. In this study, we developed and tested the reliability of salivary cortisol as a marker for the evaluation of animal welfare. We aimed to develop an on-field use Lateral Flow Immunoassay (LFIA) for the evaluation of acute stress in bovines.The availability of this non-invasive diagnostic tool will facilitate monitoring of animal welfare. In the short term, this innovation is expected to assist farmers and veterinarians in performing a more objective evaluation of the animal’s acute stress levels.In the long term, the device could become a key-instrument for the EU’s growing necessity to better monitor and identify the potential stressor factors in animal farming.
如何对单个受试者的应激水平进行客观、可重复的测量,是动物福利科学,尤其是养牛业面临的首要问题。最近在皮质醇唾液水平的测定中发现了一种潜在的解决方案:一种与急性应激严格相关的非侵入性方法。开发一种现场、易于使用的分析方法还有待验证。在这项研究中,我们开发并测试了唾液皮质醇作为动物福利评估指标的可靠性。我们的目标是开发一种现场使用的侧流免疫分析法(LFIA),用于评估牛的急性应激反应。从短期来看,这项创新有望帮助养殖户和兽医对动物的急性应激水平进行更客观的评估。从长期来看,该设备将成为欧盟日益需要的一种关键仪器,以更好地监测和识别动物养殖中的潜在应激因素。
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引用次数: 1
Application of the ClassyFarm checklist as measurement tool to evaluate the welfare of cattle kept in tie-stalls in Aosta valley 应用 "ClassyFarm "检查表作为衡量工具,评估奥斯塔河谷扎栏牛的福利状况
Q3 Engineering Pub Date : 2024-03-23 DOI: 10.21014/actaimeko.v13i1.1622
Martina Moriconi, V. Lorenzi, Clara Montagnin, Claudio Forte, Alessandro Dondo, M. Vevey, Sandra Gaino, F. Fusi, Stefania Bergagna
The growing sensitivity of consumers about animal welfare and the awareness of its impact on food security and safety recently influenced international policies and law scenario. To response to these needs, in 2018, the Italian Ministry of Health commissioned the development of a system named ClassyFarm able to categorizes the level of risk arising from farm animal welfare. The experts involved in the project provided specific checklists to analyze different animal species and housing system. The developed welfare measurement protocols consist of both resource-based and animal-based measures and are divided into three areas: (Area A) “Farm management and staff training”, Area B) “Housing and equipment”, (Area C) “Animal-based measures”. The aim of this study was to measure welfare conditions in cattle herds reared in the Aosta Valley through the ClassyFarm checklist for tie-stall dairy cattle. The scores (%) for each area of assessment were divided into three classes (insufficient, acceptable, and optimal) while the total Animal Welfare Score (AWS), obtained by summing the scores of the 3 areas, was divided into five classes. The total AWS showed the majority of the farm included in good to optimal result.
近来,消费者对动物福利日益敏感,并意识到其对食品安全的影响,这对国际政策和法律方案产生了影响。为了满足这些需求,2018 年,意大利卫生部委托开发了一个名为 ClassyFarm 的系统,能够对农场动物福利所产生的风险程度进行分类。参与该项目的专家提供了具体的清单,用于分析不同的动物物种和饲养系统。所开发的福利衡量规程包括基于资源和基于动物的措施,并分为三个方面:(A 方面)"农场管理和员工培训";(B 方面)"住房和设备";(C 方面)"基于动物的措施"。本研究旨在通过 "ClassyFarm "检查表来衡量奥斯塔河谷牛群的福利状况。每个评估领域的得分(%)分为三个等级(不足、可接受和最佳),而动物福利总分(AWS)则由三个领域的得分相加得出,分为五个等级。动物福利总分显示,大多数农场的动物福利状况良好至最佳。
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引用次数: 1
Detection of common adulterants in bulk bovine milk using fourier transformed mid-infrared spectroscopy 利用傅立叶变换中红外光谱检测散装牛乳中的常见掺假物
Q3 Engineering Pub Date : 2024-03-22 DOI: 10.21014/actaimeko.v13i1.1648
A. Guerra, M. Franzoi, V. Vigolo, Enrico Tosetto, M. De Marchi
Fourier transformed mid-infrared spectroscopy is a widespread method for routine analysis in milk. This method can also be used for the detection of adulterants in bovine milk which represent a current risk for dairy industries and public health. This work focuses on the detection of seven adulterants present in three known concentrations in bulk milk sample. The adulterants were: sodium bicarbonate, sodium chloride, hydroxyproline, glucose, sodium citrate, water, and urea. Partial least squares – discriminant analysis was used to develop statistical models to predict the presence of adulterants in milk samples. The obtained models could provide an easy, efficient, and rapid tool for the dairy industry to detect specific adulterants in milk.
傅立叶变换中红外光谱法是一种广泛应用的牛奶常规分析方法。该方法还可用于检测牛乳中的掺假物质,这些掺假物质目前对乳制品行业和公众健康构成风险。这项工作的重点是检测散装牛奶样品中三种已知浓度的七种掺假物质。这些掺假物质是:碳酸氢钠、氯化钠、羟脯氨酸、葡萄糖、柠檬酸钠、水和尿素。利用偏最小二乘法-判别分析建立统计模型来预测牛奶样品中是否存在掺假物质。所获得的模型可为乳制品行业提供一种简便、高效、快速的工具,用于检测牛奶中的特定掺假物质。
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引用次数: 1
Validity of iPhone health application step count in semi free-living conditions 半自由生活条件下 iPhone 健康应用计步的有效性
Q3 Engineering Pub Date : 2024-03-21 DOI: 10.21014/actaimeko.v13i1.1673
Pedro Judice, Jorge Fouto, Miguel Horta, Sara Pereira
The iPhone’s validity for measuring steps has been mainly investigated under laboratory conditions, while studies that include real-world conditions are still scarce. We examined the validity of iPhones in measuring steps in real-world walking conditions, while using direct observation with video as reference. A sample of 100 adults who owned an iPhone 5S or higher was included and participants were randomly allocated to one of two protocols. Limits of Agreement (LoA), Mean Absolute Percentage Error (MAPE), linear-regression and Bland-Altman analyses were carried out. In Protocol-1, which includes straight-line and zigzag conditions, we observed a low MAPE lower than 4%. Bland-Altman analyses assessed a high accordance of approximately 6 steps under both conditions. Differences between the iPhone and direct observation were only noticeable in straight-line condition (p = 0.002). Likewise, protocol-2 (three 50-step conditions: an upward 5 % slope, a flat surface, and a downward -5% slope) showed low MAPE values (3.78 %) for the upward slope, 2.41 % for the downward slope, and 2.37 % in absence of slope), and differences between the iPhone and direct observation were only observed for the downward slope (p = 0.017), with the iPhone overestimating. Our findings revealed that iPhone might be a reliable tool for monitoring walking in real-life conditions, however, downward slope seems to generate overestimation, which deserves future investigation.
iPhone 测量步数的有效性主要是在实验室条件下进行的,而包括真实世界条件的研究仍然很少。我们研究了 iPhone 在真实世界步行条件下测量步数的有效性,同时使用视频作为参考进行直接观察。我们对 100 名拥有 iPhone 5S 或更高版本的成年人进行了抽样调查,参与者被随机分配到两种方案中的一种。研究人员进行了协议限(LoA)、平均绝对百分比误差(MAPE)、线性回归和布兰-阿尔特曼分析。在协议-1(包括直线和之字形条件)中,我们观察到 MAPE 很低,低于 4%。布兰-阿尔特曼分析结果表明,在这两种条件下,MAPE 都达到了约 6 级。iPhone 与直接观察之间的差异仅在直线条件下明显(p = 0.002)。同样,协议-2(三种 50 步条件:向上 5% 的斜坡、平坦表面和向下 -5% 的斜坡)显示,向上斜坡的 MAPE 值较低(3.78%),向下斜坡的 MAPE 值为 2.41%,无斜坡的 MAPE 值为 2.37%。我们的研究结果表明,iPhone 可能是在现实条件下监测行走情况的可靠工具,但下坡似乎会产生高估,这值得今后研究。
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引用次数: 1
An innovative approach for analysing and evaluating enteric diseases in poultry farm 分析和评估家禽养殖场肠道疾病的创新方法
Q3 Engineering Pub Date : 2024-03-21 DOI: 10.21014/actaimeko.v13i1.1627
F. Borgonovo, Valentina Ferrante, Guido Grilli, Marcella Guarino
Volatile organic compounds (VOCs) produced by pathogens, host-pathogen interactions and biochemical pathways are present everywhere such as in blood, breath, faeces, sweat, skin, urine, and vaginal fluids. Their qualitative and quantitative composition is influenced by pathophysiological responses to infections, toxins, or endogenous metabolic pathway perturbations. In poultry, VOCs analysis has been explored to evaluate air quality in sheds, but they have never been monitored to determine if birds were affected by enteric diseases. The enteric disorders represent one of the most important groups of diseases that affect poultry and cause illness, mortality, and economic losses. For this reason, monitoring the health status of broilers and the early detection of any health problem is of great importance in intensive farming, especially nowadays that antibiotics are banned. Precision Livestock Farming, through the combination of cheap technologies and specific algorithms, can provide valuable information for farmers starting from the huge amount of data collected in real time at farm level.This study was aimed to the application of a PLF diagnostic tool, sensible to the variation of volatile organic compounds, to promptly recognize enteric problems recognize enteric problems (as coccidiosis and necrotic enteritis) in intensive farming, supporting veterinarians and enabling specific treatments in case of disease.
由病原体、宿主与病原体相互作用和生化途径产生的挥发性有机化合物(VOCs)无处不在,如血液、呼吸、粪便、汗液、皮肤、尿液和阴道分泌物中。它们的定性和定量组成受到对感染、毒素或内源性代谢途径干扰的病理生理反应的影响。在家禽中,VOCs 分析已被用于评估禽舍中的空气质量,但却从未被用于监测禽类是否受到肠道疾病的影响。肠道疾病是影响家禽的最重要疾病之一,会导致家禽生病、死亡和经济损失。因此,在集约化养殖中,尤其是在禁用抗生素的今天,监测肉鸡的健康状况并及早发现任何健康问题就显得尤为重要。本研究旨在应用可感知挥发性有机化合物变化的 PLF 诊断工具,及时识别集约化养殖中的肠道问题(如球虫病和坏死性肠炎),为兽医提供支持,并在疾病发生时采取特定治疗措施。
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引用次数: 1
Reference Intervals (RIs) in veterinary medicine 兽医学中的参考区间 (RI)
Q3 Engineering Pub Date : 2024-03-21 DOI: 10.21014/actaimeko.v13i1.1615
Martina Quagliardi, L. Galosi, Giacomo Rossi, Alessandra Roncarati, A. Gavazza
Reference Intervals (RIs) are necessary in veterinary clinical pathology to provide a data base in order to compare results obtained from healthy versus diseased animals. Data are obtained from laboratory tests and, depending on whether they have a Gaussian or non-Gaussian distribution, are processed through statistical tests to define the RIs. This process begins with a healthy reference population made up of individuals who have been initially chosen based on inclusion or exclusion criteria. It is frequently challenging to have a large number of healthy individuals on which to establish de novo RIs, especially in wild and exotic animals. However, the use of reference intervals in daily clinical practice remains a fundamental instrument for therapeutic and diagnostic decisions, but it must always be accompanied by clinical findings that can confirm the hypothesis.
参考区间(RI)在兽医临床病理学中是必要的,它提供了一个数据基础,以便比较从健康动物和患病动物身上获得的结果。数据来自实验室测试,根据它们是高斯分布还是非高斯分布,通过统计检验来确定参考区间。这一过程从健康参照群体开始,健康参照群体由根据纳入或排除标准初步选定的个体组成。要在大量健康个体的基础上建立新的参考区间往往具有挑战性,尤其是野生动物和外来动物。不过,在日常临床实践中使用参考区间仍然是治疗和诊断决策的基本工具,但必须始终辅以能够证实假设的临床结果。
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引用次数: 1
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Acta IMEKO
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