Article
Multidisciplinary Sciences
Emilio Gomez-Gonzalez, Alejandro Barriga-Rivera, Beatriz Fernandez-Munoz, Jose Manuel Navas-Garcia, Isabel Fernandez-Lizaranzu, Francisco Javier Munoz-Gonzalez, Ruben Parrilla-Giraldez, Desiree Requena-Lancharro, Pedro Gil-Gamboa, Cristina Rosell-Valle, Carmen Gomez-Gonzalez, Maria Jose Mayorga-Buiza, Maria Martin-Lopez, Olga Munoz, Juan Carlos Gomez-Martin, Maria Isabel Relimpio-Lopez, Jesus Aceituno-Castro, Manuel A. Perales-Esteve, Antonio Puppo-Moreno, Francisco Jose Garcia-Cozar, Lucia Olvera-Collantes, Raquel Gomez-Diaz, Silvia de los Santos-Trigo, Monserrat Huguet-Carrasco, Manuel Rey, Emilia Gomez, Rosario Sanchez-Pernaute, Javier Padillo-Ruiz, Javier Marquez-Rivas
Summary: This study demonstrates the feasibility of using hyperspectral image analysis in the visible and near-infrared range for primary screening of SARS-CoV-2. By applying spectral feature descriptors, partial least square-discriminant analysis, and artificial intelligence, information can be extracted from fluid samples and analyzed quantitatively and descriptively. The proposed technology is reagent-free, fast, scalable, and could significantly reduce the number of molecular tests required for COVID-19 mass screening, even in resource-limited settings.
SCIENTIFIC REPORTS
(2022)
Article
Computer Science, Interdisciplinary Applications
Yao Yao, Tao Cheng, Zhenhui Sun, Linlong Li, Dongsheng Chen, Ziheng Chen, Jianglin Wei, Qingfeng Guan
Summary: This study introduces the VecLI framework for computing 217 vector-based landscape indices and addresses the issue of inaccuracy in common methods through a parcel merging algorithm. Results show that VecLI's metrics are strongly correlated with Fragstats's, and provide a more realistic geographical pattern.
ENVIRONMENTAL MODELLING & SOFTWARE
(2022)
Article
Automation & Control Systems
Zhonghao Xie, Xi'an Feng, Xiaojing Chen
Summary: This paper proposes a robust method for PLS based on the idea of least trimmed squares (LTS), which effectively deals with high-dimensional regressors. By formulating the LTS problem as a concave maximization problem, the complexity of solving LTS is simplified. The results from simulation and real data sets demonstrate the effectiveness and robustness of the proposed approach.
CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS
(2022)
Article
Geochemistry & Geophysics
Carsten Laukamp, Emma Beattie, Monica Legras
Summary: Whole rock geochemical analysis is important for rock classification and understanding geological province. This study demonstrates the use of partial least squares regression to model geochemical indices from hyperspectral data, reducing the cost of full geochemical analysis. The combination of geochemical and hyperspectrally-derived mineralogy aids in mapping weathering intensity and related physicochemical gradients.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2023)
Article
Agriculture, Multidisciplinary
Yongni Shao, Jialing Liu, Zhi Zhu, Yutian Wang, Yiming Zhu, Yan Peng
Summary: This study investigates the feasibility of using terahertz spectroscopy for synchronous detection on metabolites concentration in microalgae production process. By capturing terahertz spectrum of stressed Haematococcus Pluvialis under nitrogen starvation, a correlation between metabolite contents and characteristic peak intensities was established, showing relatively accurate prediction of metabolite concentrations. A precise model combining partial least squares with intensities of interval characteristic peaks demonstrated high prediction correlation coefficients, low root-mean-square error of prediction, and validation of terahertz spectroscopy for monitoring metabolites concentration.
COMPUTERS AND ELECTRONICS IN AGRICULTURE
(2021)
Article
Biochemical Research Methods
Ruoyu Tang, Xinyu He, Ruiqi Wang
Summary: The study presents a general computational method for constructing maps between different cell fates and parametric conditions by systematic perturbations. The method does not require accurate parameter measurements or bifurcations. The maps obtained can help in understanding how systematic perturbations drive cell fate decisions and transitions, providing valuable information for predicting and controlling cell states.
Article
Automation & Control Systems
Benjamin Mahieu, El Mostafa Qannari, Benoit Jaillais
Summary: This paper introduces how to evaluate the relative importance of variables in predicting the response using the VIP index in partial least squares (PLS) regression, and proposes a permutation test to assess the significance of the VIP values of a given subset of variables. A fast variable selection procedure is also presented.
CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS
(2023)
Article
Engineering, Chemical
Hye Ji Lee, Shinje Lee, Jong Min Lee
Summary: The proposed method improves trajectory tracking performance and reduces tracking error by applying online alignment, selecting multiple models, and adaptively applying future reference based on current batch measurements. Additionally, the method adaptively decides batch duration, leading to improved overall performance in industrial penicillin production.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Business, Finance
Ziyu Song, Changrui Yu
Summary: A new group of investor sentiment indices constructed using a new dimension reduction technique shows superior ability in predicting market returns and generating economic value for investors.
INTERNATIONAL REVIEW OF FINANCIAL ANALYSIS
(2022)
Article
Chemistry, Analytical
Alessandra Biancolillo, Jean-Michel Roger, Federico Marini
Summary: In this paper, a feature selection strategy for N-way data based on the Covariance Selection (CovSel) approach, referred to as N-CovSel, is discussed. The method allows the selection of meaningful features of different dimensionality and proposes different strategies for further analysis of the selected features.
ANALYTICA CHIMICA ACTA
(2022)
Article
Green & Sustainable Science & Technology
Jose Ramon Segarra-Moliner, Inmaculada Bel-Oms
Summary: The aim of this study is to analyze the relationship between environmental, social and governance dimensions of corporate sustainability initiatives and customer lifetime value. A data sample of 547 US listed firms was divided into three segments and a prediction-oriented modeling segmentation was used to test hypotheses and evaluate the predictive validity of a partial least squares model. The results showed that ESG dimensions encompass ten sustainability initiatives that are precursors of future financial firm performance represented by CLV.
Article
Automation & Control Systems
Matteo Stocchero, Martino De Nardi, Bruno Scarpa
Summary: PLS regression is a technique for multivariate responses in the presence of multicollinearity, and efforts have been made to extend it to classification problems. A new technique called PLS for classification has been introduced to address the general G-class problem, estimating conditional probabilities and using score vectors for model interpretation.
CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS
(2021)
Article
Multidisciplinary Sciences
M. Mamouei, K. Budidha, N. Baishya, M. Qassem, P. A. Kyriacou
Summary: The use of linear models in spectroscopy applications is valid, however, nonlinear effects may exist in high concentrations and scattering media, justifying the use of complex nonlinear models.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Chemical
James Odgers, Chrysoula Kappatou, Ruth Misener, Salvador Garcia Munoz, Sarah Filippi
Summary: This article presents an approach based on bootstrapping to model the uncertainty in partial least squares (PLS), which is difficult due to the nonlinear effect of the observed data on the latent space. The approach allows for equally representing confidence intervals for points close to or far away from the latent space. Applications in determining the Design Space for industrial processes and modeling the uncertainty of spectroscopy data demonstrate the benefits and performance of the method.
Article
Engineering, Mechanical
Yushan Liu, Luyi Li, Sihan Zhao
Summary: This paper combines Kriging and PLS to develop a global surrogate model for high-dimensional structural systems, named as PLS-K. In the proposed method, PLS is employed to identify the input-output principal components, wherein Kriging model is used to establish the relationship between each pair of principal components.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Forestry
Pille Tomson, Tanel Kaart, Kalev Sepp
Summary: The study found that forest soil charcoal is widespread in regions where slash-and-burn cultivation was common in the 19th century. The depth of the charcoal in the soil is related to the duration and methods of agricultural land use. The depth of the charcoal-rich layer best reflects the historical cultivation, but the patchy spatial distribution and translocation of charcoal from different fire events complicate the interpretation of the charcoal pattern. Further studies should focus on exploring the origin and quantity of soil charcoal in the Baltic region.
Article
Fisheries
Magnus Lauringson, Ilkka Nousiainen, Siim Kahar, Oksana Burimski, Riho Gross, Tanel Kaart, Anti Vasemagi
Summary: Global climate change is impacting the abundance and spread of parasites, leading to variation in host-parasite interactions and relationships between different host species. The study on myxozoan endoparasite Tetracapsuloides bryosalmonae in wild brown trout and Atlantic salmon reveals that the speed of parasite proliferation, rather than the absolute number of parasites in the host kidney, plays a critical role in interspecific variation in PKD susceptibility. Therefore, temporal perspective is useful for understanding host defense mechanisms and the impacts of climate change on wildlife.
JOURNAL OF FISH DISEASES
(2021)
Article
Agriculture, Dairy & Animal Science
Maria Soonberg, Marko Kass, Tanel Kaart, Rosie Barraclough, Marie J. Haskell, David R. Arney
Summary: The study found that heifers are more affected by regrouping, whereas cows with more experience adapt quicker to their new environment.
JOURNAL OF DAIRY RESEARCH
(2021)
Article
Agriculture, Dairy & Animal Science
G. Marcone, T. Kaart, P. Piirsalu, D. R. Arney
Summary: The study investigated the impact of shade on sheep welfare during the summer, noting that access to shade reduced respiratory rates and panting scores, indicative of heat stress. Providing shade for sheep at pasture is crucial for preventing heat stress, even in cooler climates like northern Europe.
APPLIED ANIMAL BEHAVIOUR SCIENCE
(2021)
Article
Agriculture, Dairy & Animal Science
M. Henno, K. Ling, T. Kaart, T. Ariko, P. Karis, H. Jaakson, S. Kuusik, M. Ots
Summary: This study examined the effects of precalving administration of a continuous-release monensin capsule on post-calving milk fatty acid profile and the accuracy of fatty acids as a biomarker for early identification of cows with elevated blood plasma nonesterified fatty acids. The results showed that specific threshold values for the identification of cows with elevated NEFA and HYK could only be applicable within similar feeding conditions and rumen environment, highlighting the importance of considering individual cow factors in interpreting biomarker results.
JOURNAL OF DAIRY SCIENCE
(2021)
Article
Biodiversity Conservation
D. Pungar, R. G. H. Bunce, J. Raet, T. Kaart, K. Sepp
Summary: This study aims to describe the ecological character of Estonian agricultural landscapes and their contribution to biodiversity resources. The results show that the spread of alien plant species significantly affects the composition of native plant species in Estonia, leading to major changes in local vegetation and causing billions of Euros worth of damage to the European economy annually.
GLOBAL ECOLOGY AND CONSERVATION
(2021)
Article
Agriculture, Dairy & Animal Science
Francesca Carnovale, Jin Xiao, Binlin Shi, Tanel Kaart, David Arney, Clive J. C. Phillips
Summary: Testing the effects of transporting sheep in cold conditions revealed that sheep in covered vehicles experienced less cold stress, while longer journeys led to increased stress levels. Feeding the sheep before transport helped mitigate the adverse effects of cold stress. Various factors such as vehicle covering, transport duration, and pre-transport feeding were found to significantly impact the welfare of transported sheep in cold climates.
Article
Veterinary Sciences
Triin Rilanto, Dagni-Alice Viidu, Tanel Kaart, Toomas Orro, Arvo Viltrop, Ulf Emanuelson, Eamonn Ferguson, Kerli Motus
Summary: Farm managers' dissatisfaction, attitude and personality traits are associated with dairy cow culling rates and longevity. High culling rates and poor longevity are related to dissatisfaction with culling rates and longevity, prioritizing high milk yields, and production-oriented attitudes. Farm managers' personality has an effect on culling rates, and their attitudes explain a portion of the variability in culling rates and longevity.
RESEARCH IN VETERINARY SCIENCE
(2022)
Article
Infectious Diseases
Anri Timonen, Marju Sammul, Suvi Taponen, Tanel Kaart, Kerli Motus, Piret Kalmus
Summary: This study investigated the usage of antimicrobial drugs in cows with clinical mastitis in large dairy herds in Estonia. The findings revealed that different treatment methods and drugs could impact the outcome of the treatment, and further research is needed to understand the factors that influence veterinarians' choices.
Article
Entomology
Kalle Toomemaa, Tanel Kaart
Summary: The application of queen caging can prevent autumn brood rearing effectively. The position of caged queen and the fullness of comb sections do not affect brood production.
JOURNAL OF APICULTURAL RESEARCH
(2022)
Article
Agriculture, Dairy & Animal Science
Andres Sats, Sergei Yurchenko, Tanel Kaart, Vilma Tatar, Liis Lutter
Summary: This study measured the size distribution of bovine colostrum fat globules (CFG) and analyzed its relationships with postpartum milkings, parity, and fatty acids profile. The results showed that CFG size almost doubled during the postpartum milkings, while lactation had little effect on CFG size. The fatty acids profile analysis also revealed significant differences between the fourth postpartum milking and the previous milking. Based on these findings, the first three postpartum milkings can be considered as colostrum, while the fourth milking represents transition milk.
JOURNAL OF DAIRY SCIENCE
(2022)
Article
Veterinary Sciences
Dagni-Alice Viidu, Eamonn Ferguson, Tanel Kaart, Kerli Motus
Summary: This study examined the attitudes, satisfaction, and personality of calf care workers (CCWs) in large Estonian dairy herds and analyzed their associations with calf mortality. The results showed that the attitudes and satisfaction of CCWs have explanatory power in calf mortality, highlighting the importance of providing assistance to herds with high calf mortality.
FRONTIERS IN VETERINARY SCIENCE
(2022)
Article
Veterinary Sciences
Elisabeth Dorbek-Kolin, Aleksi Husso, Mikael Niku, Marina Loch, Tiina Pessa-Morikawa, Tarmo Niine, Tanel Kaart, Antti Iivanainen, Toomas Orro
Summary: In this study, the relationship between the intestinal microbiota and innate immunity response, acute cryptosporidiosis, and weight gain in female dairy calves were investigated. The results showed that the composition of the intestinal microbiota was associated with cryptosporidiosis and acute inflammation markers, and certain components of the microbiota may have a long-lasting negative effect on animal growth through the stimulation of the systemic innate immune response.
RESEARCH IN VETERINARY SCIENCE
(2022)
Article
Behavioral Sciences
Kristi Liiver, Sophie Imbeault, Marianna Skolnaja, Tanel Kaart, Margus Kanarik, Karita Laugus, Jade De Wettinck, Aleksander Pulver, Ruth Shimmo, Jaanus Harro
Summary: Sex differences in exploratory behavior were observed in male and female rats. Female rats displayed higher exploratory activity and a normal distribution, while males exhibited a bimodal distribution. There were no major effects of litter or estrous cycle. Differences in monoamine metabolism between male and female rats were found, including lower dopamine levels in the frontal cortex and higher levels of 3,4-dihydroxyphenylacetic acid (DOPAC) in the raphe area in males. Females had higher levels of serotonin (5-HT) and 5-hydroxyindoleacetic acid (5-HIAA) in the dorsal striatum, but lower levels in the locus coeruleus area. There were also differences in noradrenaline (NA) and normetanephrine (NMN) levels between the sexes. Female rats displayed not only higher levels of exploration, but also a distinct population distribution of this behavior, which may be related to differences in monoaminergic systems.
BEHAVIOURAL BRAIN RESEARCH
(2023)
Article
Forestry
Aleksei Potapov, Lauri Mehtatalo, Andres Kiviste, Sandra Metslaid, Tanel Kaart, John A. Stanturf, Maris Hordo
Summary: Wood production in peatland forests is closely linked to hydrological management practices that aim to improve soil moisture and stand growth. However, the outcomes of ditching activities can vary greatly, necessitating the need for new data and modeling approaches to better understand forest growth dynamics on a tree-level and long-term scale.
FOREST ECOLOGY AND MANAGEMENT
(2023)
