Multivariate Statistics - Science topic

Kachi JB, Binashikhbubkr K, Naim DM. 2025. Morphological differentiation of Pennahia aneus (Bloch, 1793) populations from Northern Peninsular Malaysia using geometric morphometrics. Nusantara Bioscience 17: 30-38. The investigation of geometric morphometrics offers evidence for the adaptive traits shown by fish in response to their aquatic environm...

Physical classification is the official standard method for determining grain quality for commercialization. However, it is a time-consuming, subjective operation, susceptible to errors, and requires skilled labor. Optical methods of indirect measurement emerge as a promising evaluation alternative, offering economic advantages, standardization in...

Objective To determine the population variability in dextromethorphan metabolism by cytochrome (CY) P450 2D15 (CYP2D15) in dogs. Methods Healthy pet dogs were recruited from 2018 through 2024 from the Inland Pacific Northwest and phenotyped by orally administering the Program in Individualized Medicine cocktail, which contains dextromethorphan, a...

The workshop covers all aspects of quantitative risk and portfolio management from the foundations to the newest developments: • Multivariate statistics and stochastic processes • Multivariate estimation in non-normal markets • Market modeling • Pricing • Portfolio evaluation • Generalized risk decomposition • Advanced portfolio management techniqu...

The aim of this study was to gain insight into the biochemical status of cerebrospinal fluid in the presence of brain death in life-supported patients. The biochemical status was determined via in vitro NMR spectroscopy of cerebrospinal fluid (CSF) obtained by lumbar puncture from 22 patients with confirmed brain death and compared with that of 34...

Worldwide, industrial growth, overpopulation, and a lack of awareness about the need to protect essential resources are posing serious risks to natural water sources. The aesthetic value and ecological integrity of urban coastal waters are vital resources that the tourism industry depends on, and they are being jeopardized for the benefit of nearby...

The increasing incidence of multidrug-resistant tuberculosis (MDR-TB) poses a significant threat to global TB eradication efforts. The rapid spread of MDR-TB has garnered global concern. This study aimed to identify factors contributing to the high prevalence of MDR-TB among TB patients at St. Kizito hospital maternity, located in the Napak Distric...

This study integrates environmental magnetism, geochemical analysis, and multivariate statistical methods to investigate heavy metal pollution in the urban topsoil of Xuzhou, China. A total of 142 samples were collected, and concentrations of Cr, Cu, Fe, Mn, Ni, Pb, Zn, and magnetic parameters (χ, χfd, SOFT, SIRM, χARM) were measured. Results revea...

Seventy-seven groundwater samples from Wadi Ranyah, Saudi Arabia, were analyzed to assess their physical and chemical properties. Initially, the physiochemical parameters were compared to the World Health Organization (WHO) standards and studied with Durov and Chadha diagrams. Multivariate statistical indices, such as the saturation index (SI), chl...

Thermal tomographic images could be extensively utilized for their noteworthy usefulness in various applications, specifically in security, civil inspection work, medical, and industrial domains. Accurate and effective classification of thermal tomographic images poses a significant challenge in assessing temperature distribution, like whether they...

Introduction Transurethral resection of the bladder (TURB) is a common urological procedure, typically performed in an inpatient setting. This study aims to investigate safety, quality, and patient satisfaction aspects of TURB in an outpatient setting, reflecting the emerging strategy of outpatientization of surgical procedures in the German health...

The sample covariance matrix becomes non-invertible in high-dimensional settings, making classical multivariate statistical methods inapplicable. Various regularization techniques address this issue by imposing a structured target matrix to improve stability and invertibility. While diagonal matrices are commonly used as targets due to their simpli...

The internal quality of hazelnuts (Corylus avellana L.), particularly in terms of the degradation of fat components, is widely recognized as a key factor in determining the appropriate type of industrial processing. Additionally, the internal composition and volatile profile of hazelnuts change significantly based on different roasting conditions....

Forest ecosystems are important for carbon storage but vary in their ability to do so. Here, we examined the relationship between stand state and ecosystem carbon storage in Pinus massoniana forests, pinpointed key stand state indicators affecting carbon storage, and provided a basis for management to enhance ecosystem carbon storage. We selected n...

This research paper investigates two significant geological outliers in India-Kutchch-Kathiawar in Gujarat and Shillong-Karbi Anglong in Meghalaya-through the lens of spatial analysis and geospatial statistics. The study employs advanced multivariate statistical techniques to analyze geothermal hot spring data and its correlation with seismic zones...

Purpose To examine a comprehensive list of demographic, substance use, economic, and social factors associated with suicidal ideation (SI) among middle-aged adults. Methods Cross-sectional data were obtained from a national sample of middle-aged adults between February and November 2022. The study’s final sample include 1,337 respondents who repre...

Freshwater lakes in central India like Pandharabodi Lake (PBL), face escalating environmental pressures due to anthropogenic activities, threatening their ecological conditions. Despite growing concerns, systematic investigations on trace metal pollution in the PBL sediments are so far not done, hindering effective conservation strategies. The pres...

Lilium brownii var. viridulum (Longya lily) is a widely used medicinal and culinary plant in China that is valued for its potential applications and development opportunities. The bulbs of Longya lily contain a variety of active components; volatile oil, as one of the main biologically active compounds, has been widely studied, and the stems, leave...

Rubus corchorifolius, a medicinal plant of the Rosaceae family, is known for its diverse bioactive compounds. This study employs widely targeted metabolomics to investigate the metabolic profiles of leaf, stem, and flower tissue from R. corchorifolius. Using ultra-performance liquid chromatography coupled with tandem mass spectrometry, we identifie...

The development of laser spectroscopic analysers has revolutionized isotope hydrology, dramatically increasing accessibility and reducing the cost of sample analysis. Despite their substantial benefits, these instruments are known to suffer from spectral interferences caused by small organic molecules that can bias measurements of some samples. Pre...

Multiple regression analysis is one of the widely used multivariate statistical techniques employed in medical, health, and other applied research and studies for determining the correlation between a response variable and some combination of two or more predictor variables. The objective of our investigation in this paper is to evaluate the associ...

Orange-Volcanoes is an extension of the open-source Orange data mining platform specifically tailored for geochemical, petrological, and volcanological investigations. Orange-Volcanoes enhances the original platform by incorporating specialized tools to enable interactive data-driven investigations in geochemistry, such as performing Compositional...

In this study, the levels of metallic elements (Al, Cr, Cu, Fe, Mn, Ni, Pb, Sc, V, and Zn) and radioactive tracers (excess ²¹⁰Pb and ¹³⁷Cs) were determined in three sediment cores using Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) and gamma spectrometry, respectively. These samples were collected from the Santos-São Vicente Es...

The modern agricultural sector is facing significant challenges, viz. productivity, sustainability and profitability due to shrinking landholdings and limited resource base. Therefore, a study was carried in 2020 and 2021 at Punjab Agricultural University, Ludhiana, Punjab, to investigate farm typologies in the northwest part of India using multiva...

Background Head and neck squamous cell carcinoma (HNSCC) is among the most aggressive malignancies, underscoring the need for early diagnosis to improve patient outcomes. Tumor-derived exosomes, which can be non-invasively obtained and reflect the metabolic state of tumors in real-time, are under increasing investigation for their diagnostic potent...

Landmark-based geometric morphometric (GM) methods have become a standard in shape analysis. Superimposition of landmark constellations, referenced to the mean, is performed using the least squares criterion under the consensus framework of Generalized Procrustes Analysis (GPA). While effective, especially when combined with multivariate statistics...

Some plants belonging to the Leontodon sect. Asterothrix were collected from southern Albania. They were compared with the closest taxon (L. albanicus s.str.) from morphological and molecular (AFLPseq fingerprinting) points of view. Uni- and multivariate statistical analyses of morphological data revealed distinctive discontinuities—especially in t...

In recent years, interest in data-driven methods, such as machine learning and multivariate statistics for multi-hazard and multi-risk assessment has surged, due to their ability to integrate vast amounts of data in modelling complex non-linear relationships between hazard and risk factors. This review explores data-driven methods in climate multi-...

Eco-morphological studies seek to understand the interconnection between the morphology of an organism and its ecology. It is the only way to determine if morphometric data can be used as an informative proxy for ecological variables of interest. This study, therefore, investigated fish diversity and its eco-morphological features for sustainable f...

Understanding the sources and dynamics of past biomass burning remain a significant challenge due to variations in paleofire combustion patterns across different temporal and spatial scales. This study integrates black carbon and polycyclic aromatic hydrocarbon (PAH) records from the Lubei Plain in the Shandong Peninsula, Lower Yellow River, to rec...

In Baja California Sur (BCS), Mexico, the municipality of La Paz has reported higher cancer rates compared to nearby areas, linked to arsenic contamination from abandoned gold mines and naturally high uranium (U) and arsenic (As) levels in sediments. This study evaluates the impact of human activities on natural U and As anomalies in watercourse se...

Monitoring changes in groundwater quality over time helps identify time-dependent factors influencing water safety and supports the development of effective management strategies. This study investigates the spatiotemporal evolution of groundwater chemistry in the Debrecen area, Hungary, from 2019 to 2024, using indexing, machine learning, and mult...

PCA Clustering Data Processing Seismic Patterns. In this study, I analyzed earthquake data using multivariate statistical methods to uncover patterns and relationships between key variables. The dataset I worked with included details like magnitude, depth, location, and time of occurrence. To ensure accurate analysis, I first cleaned the data, chec...

Regional hydrochemical variations and their evolution mechanisms have been a common concern for a long time, especially in fragile ecological areas such as the Qaidam Basin. However, previous studies have conducted hydrochemical investigations mostly based on aquifer properties or geomorphic conditions to reveal hydrochemical characteristics and ev...

Vehicle emissions pose significant environmental challenges, particularly in high-altitude regions, where atmospheric conditions amplify pollutant concentrations. This study evaluates CO2 and hydrocarbon (HC) emissions from 79 gasoline-powered vehicles in Guaranda, Ecuador (2668 m.a.s.l.), by using STATIS, a multivariate statistical method. The veh...

Greek wines made from the indigenous grape varieties Assyrtiko, Malagousia, Moschofilero and Roditis are attracting the interest of wine producers and consumers due to their aromatic characteristics. However, there are few studies that focus on the unique wine characteristics of each variety and the relationship between the composition of volatile...

Objective: the study explores the complex interaction between intrapreneurial behavior, organizational factors, and individual characteristics, with a focus on a moderated-mediation model. This model incorporates individual autonomy as a key enhancer and considers organizational elements like time availability, managerial support, rewards, and stru...

Zostera marina and Zostera noltei are two foundation species that play a crucial role in the functioning of coastal ecosystems. They occur in a wide range of environmental conditions over a large geographical area in the northern hemisphere. The aim of this study was to investigate the scales of variability in the dynamics of these two species in r...

Background: Postoperative pulmonary complications (PPCs) are the most common complications following lung surgery and can lead to increased postoperative mortality. In this study, we examined the incidence of PPCs, the in-hospital mortality rate, and the risk factors associated with PPCs in patients undergoing open thoracotomy lung resection (OTLR)...

Citation: Chaisoung, N.; Balslev, H.; Suksathan, R.; Panyadee, P.; Long, C.; Ngernsaengsaruay, C.; Chaowasku, T.; Inta, A. Essential Oil and Phylogenetic Positions of Five Medicinal Litsea Species (Lauraceae). Diversity 2025, 17, 168. https://doi. Abstract: Litsea species have been used for herbal medicine by many ethnic groups. However , defining...

The effects of different shaping methods and loading treatments on the photosynthetic rate, chlorophyll content, fruit yield and quality, and volatile compound composition of the ‘Beibinghong’ grape were studied. In the experiment, 6-year-old ‘Beibinghong’ grapes were selected as the material, and two kinds of shaping methods were adopted: the doub...

Os indicadores sociais, ambientais e econômicos são frequentemente empregados para caracterizar um setor específico de interesse. A compreensão desses indicadores tem impactos relevantes no desenvolvimento socioeconômico das regiões. Este trabalho tem como objetivo interpretar as variáveis do Índice Mineiro de Vulnerabilidade Climática (IMVC) por m...

Background: Understanding the metabolic adaptations of wild bighorn sheep (Ovis c. canadensis) to nutritional stress is crucial for their conservation. Methods: This study employed 1H nuclear magnetic resonance (NMR) metabolomics to investigate the biochemical responses of these animals to varying sub-maintenance nutritional states. Serum samples f...

The present investigation delved into the geochemical importance of trace elements and major oxide constituents in the shales from the Gamba Formation, Sokoto Basin, Nigeria. by inductively coupled plasma-mass spectrometry (ICP-MS), x-ray fluorescence spectroscopy (XRF), and statistical methodologies within the context of provenance, tectonic envir...

Emitter clogging is the main limitation of drip irrigation systems operating with wastewater. This paper aimed to employ discriminant analysis (DA) to generate classification functions that characterize aquaculture wastewater (AW) dilutions in well water (WA), delivered through non-self-compensating drippers. Five AW dilutions in WA were tested (D1...

The continuous development in the urbanisation, industrial, and agricultural sectors, coupled with an increase in the population of a given area, impacts the quality and supply of surface water. Groundwater serve as a viable alternative to mitigate these challenges. However, ensuring the safety and sustainability of groundwater necessitates compreh...

Background: Fever of Unknown Origin (FUO) is a diagnostic challenge in pediatrics, often stemming from zoonotic infections. In southern Israel, brucellosis and rickettsiosis are endemic and share overlapping clinical features, making diagnosis difficult. We compared the demographic, clinical, and laboratory characteristics of pediatric brucellosis...

Seawater Intrusion (SI) is a critical problem as a consequence of climate change. The progression of the salt wedge inland compromises the quality and quantity of groundwater, seriously damaging agriculture and gradually desertifying the territory. The alluvial aquifer of the Lower Val Magra (LVM) is one of the most important in Liguria (Italy). It...

Water pollution is a significant problem stemming from several causes, with the contamination of heavy metal(oid)s being a primary concern. This is especially concerning because of the poisonous characteristics of these metal(oid)s and their effects on the aquatic ecosystem. This research is distinguished by its unique methodology for assessing met...

Multiple sclerosis (MS) is a chronic inflammatory neurodegenerative disease of the central nervous system. The manifestation of MS is related to steroid changes during the menstrual cycle and pregnancy. As data focusing on the effect of anti-MS drug treatment on steroidome are scarce, we evaluated steroidomic changes (79 steroids) in 61 female MS p...

Nanhaia speciosa is a valuable industrial crop known for its significant edible and medicinal properties, attributed to its abundance of secondary metabolites. This study aims to elucidate the genetic relationships among N. speciosa, enhance species identification accuracy, and select genetically stable, high-quality germplasms of N. speciosa. To a...

The aim of this research is to assess the risk of radioactivity in the sand along the high-speed railway and its surrounding areas in Egypt. The research revealed that the activity levels of radionuclides ²³²Th and ²³⁸U in sand were below the worldwide averages of 45 and 33, respectively. Despite this, the concentration of the potassium was higher...

Introduction Individuals who claim to be affected by idiopathic environmental intolerance attributed to electromagnetic fields (EMFs) report symptoms linked to EMF exposure. Uncertainties about the causes of these symptoms often leave them seeking their own care solutions. In our connected societies, they may limit their exposure, leading to a spir...

Polycyclic aromatic hydrocarbons (PAHs) in sediment from urban shallow lake Bubanj (Serbia) were investigated in terms of their concentration, distribution, and potential effects on the environment and human health. The concentration of 16 PAHs (ΣPAHs) ranged from 24.4 to 107 ng/g dw. Low-molecular-weight PAHs (2- and 3-aromatic rings) were dominan...

The degradation of groundwater quality due to mining activities is a major public concern globally. This study employed a combination of methods (multivariate statistics, Self-organizing mapping, and PHREEQC hydrogeochemical simulation) to uncover the hydrochemical characteristics and processes of mine water in the Kailuan mining area. Self-organiz...

Managing construction and demolition waste (CDW) poses serious concerns regarding landfilling and recycling because of the potential release of hazardous elements after leaching. Ceramic materials such as bricks, tiles, and porcelain account for more than 70% of CDW. Fourteen samples of different CDW products from Ferrara (Northeast Italy) were sub...

In the domain of rotating machinery, bearings are vulnerable to different mechanical faults, including ball, inner, and outer race faults. Various techniques can be used in condition-based monitoring, from classical signal analysis to deep learning methods in diagnosing these faults. Based on the complex working conditions of rotary machines, multi...

Uranium mining presents significant environmental challenges, particularly through radiological contamination affecting soil and water bodies. While soil microbial communities are known to be influenced by geochemical factors like pH and nutrient availability, their responses to severe uranium contamination in mine tailing environments remain poorl...

Purpose Time to closure and morbidity are significant issues associated with ileostomy reversal after rectal cancer resection. This study aimed to investigate the rate, time, and morbidity associated with ileostomy closure procedure. Methods Between February and December 2022, patients who underwent protective ileostomy after rectal cancer surgery...

The purpose of the study is to determine the impact of demographic changes (depopulation, population aging) occurring in Polish local government units (LGUs), identified in this article with gminas (municipalities), on their revenue potential. The authors analyzed the sources of the own revenue of LGUs dependent on the analyzed demographic phenomen...

Purpose Comprehensive analysis of serum lipidomics is important for the treatment and prevention of type 2 diabetes (T2DM). The purpose of this study was to provide a profile of lipid changes in the serum of T2DM patients and identify potential lipid biomarkers. Patients and Methods In this study, we collected clinical physiological parameters and...

Este estudo propôs zonas climáticas para edificações em Moçambique usando técnicas de estatística multivariada, a identificação de estratégias construtivas recomendadas para cada grupo e a análise de conforto térmico das habitações representativas a partir de simulações termoenergéticas. Com a aplicação da Análise de Componentes Principais, selecio...

Background: Human papillomavirus (HPV) infections in men remain under-researched despite their critical role in disease transmission and the increasing incidence of HPV-related cancers. This study investigates the clinical and molecular characteristics of anogenital HPV infections in men, emphasizing genotype prevalence, diagnostic methods, and les...

Jiang‐flavor Baijiu (JFB) is one of the most complex and representative types of traditional Chinese liquor, known for its unique flavor, which is popular among Chinese consumers. Previous studies primarily focused on detecting and identifying volatile compounds but lacked comprehensive descriptions and precise differentiation of their sensory qual...

Please cite this article as: Onyeka Fabian Obumselu , Nwabueze Igu , Ebere Anarado , Chinonso Mgbeokwere , Chinenye Okolo , Chideraa Courage Offor , Effects of land use types on the soil physicochemical characteristics of Inyi community, Enugu State, Nigeria: Application of multivariate statistical, and eco-toxicological and human risk model approa...

Introduction A novel focal cortex stimulation (FCS) device has recently received approval in Europe for patients with focal drug-resistant epilepsy (DRE). After 6 months of stimulation, 17 of 32 patients achieved ≥50% reduction in seizure frequency compared with their prestimulation baseline (responders). Currently, there is no established method f...

Inflammatory Bowel Disease (IBD), Crohn's disease (CD) and ulcerative colitis (UC), requires a combination of procedures and tests in diagnosis and discrimination. This study aimed to delineate specific serum metabolomic biomarkers that diagnose IBD and differentiate IBD subgroups. Serum samples and clinical metadata of the participants, IBD patien...

This study utilises the R programming language for statistical data analysis to understand Tourism dynamics in Poland. It focuses on methods for data visualisation, multivariate statistics, and hypothesis testing. To investigate the expenditure behavior of tourist, spending patterns, correlations, and associations among variables were analysed in t...

Due to their importance for sensory perception, volatiles of blackcurrant (Ribes nigrum L.) juices obtained using three pressing systems in two subsequent years were assessed by HS-SPME–GC–MS. The 35 volatiles assigned comprised 15 terpenes, 10 terpenoids, six esters, two aldehydes and each one alcohol and norterpenoid. The aroma impact compound 4-...

The term ‘wild’ is a premium descriptor for food, often leading consumers to accept higher prices. This financial allure can encourage fraudsters to mislabel or substitute game meat with cheaper domestic pork. This study aimed to use a non-targeted ¹H NMR spectroscopy and/or MALDI-ToF–MS analysis, coupled with multivariate statistics, to distinguis...

Milk yield and its composition show individual variation due to the effects of the environment. Previous studies suggest that meteorological variables exert negative effects on milk yield and composition, especially during summer. This study aimed to examine the effects of meteorological variables on bulk milk composition in the Sardinian sheep pro...

Understanding the processes controlling groundwater mineralization is critical for preserving its quality and ensuring sustainable resource management, especially in regions like Naama, Algeria, which rely exclusively on groundwater. This resource faces severe overexploitation and high salinity due to climatic factors and increasing industrial, agr...

Residues of biodegradable plastics (BP) may be used for soil conservation techniques in deforested areas, but their effects on rill detachment—the most common erosion process on steep and long hillslopes—have never been explored so far. Furthermore, no equations have been proposed to predict the rill detachment capacity (Dc), rill erodibility (Kr),...

While financial data presents one of the most challenging and interesting sequence modelling tasks due to high noise, heavy tails, and strategic interactions, progress in this area has been hindered by the lack of consensus on quantitative evaluation paradigms. To address this, we present LOB-Bench, a benchmark, implemented in python, designed to e...

Substance abuse among youth has emerged as a critical public health challenge, particularly in rapidly urbanising regions like Lagos State, Nigeria. Given the adverse effects of substance abuse on both individual well-being and societal development, it is essential to identify the personality factors that may contribute to this growing issue. This...

This study has attempted to investigate the effects of mining on groundwater quality in the Korba Coalfield region of Chhattisgarh, India. Hydrogeochemical processes and statistical methods have been used to assess groundwater quality. To achieve the objective, standard techniques and different indicators, including hydro-geochemistry, WQI, and mul...

Dry-cured tuna products exhibit unique aroma characteristics appreciated by local consumers, particularly in the southern Iberian Peninsula. In the present study, headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry (HS-SPME-GC/MS) was used to identify and quantify volatile organic compounds (VOCs), establishing a...

Water is an essential component of life with a wide range of uses, mismanagement and the lack of monitoring pose a lot of reduction in the water quality. The study aims to evaluate the level of elements and the possible health risks in water around an open dumpsite. Water samples were collected from wells, streams and boreholes surrounding the site...

This study aimed to characterize the chemical composition of by-products from Opuntia ficus-indica (clado-des, peels, and seed cakes) using gas chromatography-mass spectrometry (GCÀMS) to explore their valoriza-tion potential. The by-products were subjected to extraction and transesterification before analysis. A deep learning approach, NPClassifie...

Objectives To evaluate the impact of oral health problems on oral health-related quality of life (OHRQoL) among female patients received Radioactive iodine (¹³¹I) therapy. Materials and methods This unmatched case-control study was conducted on 40 female patients (20 cancer free controls and 20 patients treated with ¹³¹I therapy). Data were collec...

Background Childhood asthma is a heterogeneous disease that exhibits different characteristics and varying severity; however, the metabolite alterations underlying the difference in asthma severity, especially in severe asthma, are not well understood. The aim of this study was to identify the plasma metabolic profile of children with different ast...

Background The rumen harbors a diverse and dynamic microbiome vital in digesting vegetation into metabolic byproducts for energy and general biological function. Although previous studies have reported connections between the rumen and the overall health of the sheep, the exact biological process by which this occurs is not well understood. Therefo...