1,291 results match your criteria: ""Transilvania" University[Affiliation]"

It is widely recognized that fuzzy number theory relies on the characteristic function. However, within the fuzzy realm, the characteristic function transforms into a membership function contingent upon the interval [0,1]. This implies that real numbers and intervals represent exceptional cases of fuzzy numbers.

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Effective population size () is one of the most important parameters in evolutionary biology, as it is linked to the long-term survival capability of species. Therefore, greatly interests conservation geneticists, but it is also very relevant to policymakers, managers, and conservation practitioners. Molecular methods to estimate rely on various assumptions, including no immigration, panmixia, random sampling, absence of spatial genetic structure, and/or mutation-drift equilibrium.

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Comprehensive electrical models for a wireless sensor network device.

Heliyon

December 2024

Transilvania University of Brașov, Department of Electronics and Computers, Faculty of Electrical Engineering and Computer Science, Brasov, 500036, Romania.

This paper proposes a novel circuit model of a Wireless Sensor Network (WSN) device. The model is designed to accurately represent the behavior of a WSN device operating in a duty cycle, capturing the essential characteristics of its components, including the microcontroller, sensor, transceiver, and power supply. The proposed model incorporates static and dynamic power consumption aspects, reflecting the energy usage patterns during various operational states such as sensing, processing, and communication.

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Background/objectives: This study focused on a group of 22 elite male mountain runners from Brazil (average age of 35.9 ± 6.5 years) with the objective of exploring the possible roles of the ACTN3 R577X, ACE I/D, and CK MM A/G NcoI genetic variants in shaping electrochemical profiles and maintaining acid-base homeostasis during a 105-km ultramarathon.

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We present comparative studies of sol-gel ITO multilayered films undoped and doped with Nb or Zn (4 at.%). The films were obtained by successive depositions of five layers using the dip-coating sol-gel method on microscopic glass, SiO/glass, and Si substrates.

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Diabetes medications can affect weight and cardiovascular health. Some medications can aid in weight management, while others may lead to weight gain. Patients must be monitored and receive appropriate care to manage weight and prevent cardiovascular complications.

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  • * The review focuses on the ischemic mechanisms involved in glaucoma, such as blood flow issues and signaling pathways that damage retinal nerve fibers.
  • * Understanding these ischemic processes could lead to new treatments and better patient care in managing glaucoma.
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Natural ingredients have been used in skincare products for thousands of years. The current focus is on novel natural bioactivities that shield the skin from UV rays and free radicals, among other damaging elements, while enhancing skin health. Free radicals significantly contribute to skin damage and hasten ageing by interfering with defence and restorative processes.

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  • The paper explores the integration of chemical reaction network theory and mathematical epidemiology, emphasizing their potential synergy to enhance understanding in related fields like ecology and virology.
  • It proposes a new definition of mathematical epidemiology models and introduces the next generation matrix approach to help researchers analyze stability in complex systems.
  • The authors aim to provide accessible learning resources, including a Mathematica package "bootcamp," to support newcomers to both mathematical epidemiology and chemical reaction networks.
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Background: The Improved Health Care in Neurology and Psychiatry-Longer Life (IHCNP) study was an 18-month prospective, observational, non-interventional research study focused on patients with mild cognitive impairment (MCI) following ischemic stroke.

Objectives: Our secondary analysis of the IHCNP data aimed to document the progression of MCI in this patient group.

Methods: A total of 100 patients from Romania were recruited, all of whom underwent cognitive assessments using the Mini-Mental State Examination (MMSE), Montreal Cognitive Assessment (MoCA), and Rey Auditory Verbal Learning Test (RAVLT).

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Collaborative Outcomes Study on Health and Functioning During Infection Times (COH-FIT): Global and Risk-Group Stratified Course of Well-Being and Mental Health During the COVID-19 Pandemic in Adolescents.

J Am Acad Child Adolesc Psychiatry

November 2024

University of Greenwich in London, United Kingdom; FHNW University of Applied Sciences and Arts Northwestern Switzerland, Switzerland; University of Texas Health Science Center, Houston, United States; Zucker Hillside Hospital, Northwell Health, and the Feinstein Institutes for Medical Research, New York. Electronic address:

Objective: To identify the COVID-19 pandemic impact on well-being/mental health, coping strategies, and risk factors in adolescents worldwide.

Method: This study was based on an anonymous online multi-national/multi-language survey in the general population (representative/weighted non-representative samples, 14-17 years of age), measuring change in well-being (World Health Organization-Five Well-Being Index [WHO-5]/range = 0-100) and psychopathology (validated composite P-score/range = 0-100), WHO-5 <50 and <29, pre- vs during COVID-19 pandemic (April 26, 2020-June 26, 2022). Coping strategies and 9 a priori- defined individual/cumulative risk factors were measured.

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Generative 3D Cardiac Shape Modelling for in-silico Trials.

Stud Health Technol Inform

November 2024

Advanta, Siemens SRL, Braşov, Romania.

We propose a deep learning method to model and generate synthetic aortic shapes based on representing shapes as the zero-level set of a neural signed distance field, conditioned by a family of trainable embedding vectors with encode the geometric features of each shape. The network is trained on a dataset of aortic root meshes reconstructed from CT images by making the neural field vanish on sampled surface points and enforcing its spatial gradient to have unit norm. Empirical results show that our model can represent aortic shapes with high fidelity.

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Article Synopsis
  • Sexual dysfunction (SD) is a widespread issue among people with Parkinson's disease (PD), but it is often underreported and untreated, especially in various ethnic groups due to cultural beliefs.
  • A study conducted in the UAE involving 513 patients found that SD was more prevalent in non-Emirati individuals, and it significantly impacted their quality of life and anxiety levels.
  • The research concluded that SD affects all ethnicities similarly and emphasized the importance of culturally sensitive counseling to improve awareness and treatment.
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  • * It reviews pharmacological treatments for common sleep issues like REM sleep behavior disorder (RBD), excessive daytime sleepiness (EDS), insomnia, and restless legs syndrome (RLS), emphasizing the use of melatonin, clonazepam, modafinil, and caffeine.
  • * The article suggests that optimizing dopaminergic treatments at night and maintaining good sleep hygiene can improve sleep quality, but more evidence is needed to widely recommend some of the therapies mentioned.
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Background: Coronary artery bypass grafting (CABG) is frequently used to treat severe coronary artery disease (CAD), but it can lead to increased oxidative stress and inflammation, worsening patient outcomes. Remote ischemic preconditioning (RIPC) has been suggested as a potential strategy to protect against these effects by modulating oxidative stress and inflammatory responses, though its impact on specific biomarkers requires further investigation. This study aims to assess the effects of remote ischemic preconditioning on inflammation markers and oxidative stress in patients with severe CAD undergoing coronary artery bypass grafting.

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The continuous rise in global demand for wood products has led to an increase in prices and a surge in research into alternative resources. As a byproduct of the timber industry, bark has emerged as a promising supplement in particleboard (PB) production. However, its anatomical structure, the presence of extractives, and its inferior mechanical properties complicate the production process, which have not yet been fully overcome at a commercial scale.

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Myocarditis, characterized by inflammation of the myocardial tissue, presents substantial risks to cardiovascular functionality, potentially precipitating critical outcomes including heart failure and arrhythmias. This investigation primarily aims to identify the optimal cardiovascular magnetic resonance imaging (CMRI) views for distinguishing between normal and myocarditis cases, using deep learning (DL) methodologies. Analyzing CMRI data from a cohort of 269 individuals, with 231 confirmed myocarditis cases and 38 as control participants, we implemented an innovative DL framework to facilitate the automated detection of myocarditis.

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Background: Research shows that older adults' performance on choice reaction time (CRT) tests can predict cognitive decline. A simple CRT tool could help detect mild cognitive impairment (MCI) and preclinical dementia, allowing for further stratification of cognitive disorders on-site or via telemedicine.

Objective: The primary objective was to develop a CRT testing device and protocol to differentiate between two cognitive impairment categories: (a) subjective cognitive decline (SCD) and non-amnestic mild cognitive impairment (na-MCI), and (b) amnestic mild cognitive impairment (a-MCI) and multiple-domain a-MCI (a-MCI-MD).

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Developing a specific model to exploring the determinant of individuals' attitude toward forest conservation.

Front Psychol

October 2024

Associate professor, Department of Forest Engineering, Faculty of Silviculture and Forest Engineering, Transilvania University of Brasov, Brașov, Romania.

Introduction: In the context of forest conservation, individuals' attitude can significantly influence their intentions and subsequent behaviors towards conserving forests. However, there is a research gap when it comes to understanding the determinants of individuals' attitude towards forests conservation. To address this gap, the present study aimed to investigate the influence of variables associated with values from value-belief-norm theory, awareness of consequences, and ascription of responsibility from norm activation model on individuals' attitudes as main determinant of behavior intention.

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Recognition and characterising non-motor profile in early onset Parkinson's disease (EOPD).

Parkinsonism Relat Disord

December 2024

Parkinson's Foundation Centre of Excellence, King's College Hospital, Denmark Hill, London, SE5 9RS, UK; Basic and Clinical Neuroscience Department, The Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 5 Cutcombe Road, London SE5 9RX, UK. Electronic address:

Early onset Parkinson's disease (EOPD) has been recently defined as a clinical entity with subjects presenting with Parkinson's disease (PD) between the ages of 21-50 and replaces the term Young Onset PD (YOPD). Presentations in this age group are somewhat different to the typical Late Onset sporadic PD (LOPD) and genetic basis may play an important role. The presentations are however, to be differentiated from other causes of juvenile onset or early onset parkinsonism, which are often driven by rare genetic, brain metal deposition, or metabolic progressive disorders with a levolevodopa unresponsive or poorly responsive phenotype.

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A search for the exclusive hadronic decays W^{±}→π^{±}γ, W^{±}→K^{±}γ, and W^{±}→ρ^{±}γ is performed using up to 140  fb^{-1} of proton-proton collisions recorded with the ATLAS detector at a center-of-mass energy of sqrt[s]=13  TeV. If observed, these rare processes would provide a unique test bench for the quantum chromodynamics factorization formalism used to calculate cross sections at colliders. Additionally, at future colliders, these decays could offer a new way to measure the W boson mass through fully reconstructed decay products.

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Article Synopsis
  • - The ATLAS experiment at the LHC conducted a search for long-lived particles (LLPs) using a large dataset (140 fb^{-1}) from proton-proton collisions at 13 TeV, focusing on LLPs with masses from 5 to 55 GeV that decay within the inner detector.
  • - The study considered scenarios where LLPs are produced from exotic Higgs boson decays and models involving axionlike particles (ALPs).
  • - No significant findings above expected background levels were detected, leading to the establishment of upper limits on various production rates involving the Higgs boson and the top quark related to LLPs and ALPs.
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Rationale: Sporadic cases of acute appendicitis (AA) in children with SARS-CoV-2 infection were still recorded at the end of COVID-19 pandemics. We consider that analyses of clinical courses and outcomes is useful to improve the clinical management of such cases in the setting of a general hospital.

Patient Concerns: Patient #1 was a 14-year-old girl who presented with nausea, right lower quadrant (RLQ) pain, myalgia, ad low-grade fever for 24 hours.

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Objective: The present study aimed at evaluating the association between sympathetic nervous system activation (SNS) and the severity of coronary artery disease (CAD). In addition, we tested the hypothesis that inflammation and oxidative stress influence the SNS activation.

Methods: Adult patients with severe CAD scheduled for coronary artery bypass graft (CABG) surgery were enrolled.

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Caffeine optimizes Zumba training benefits on functional performances in middle-aged women: a randomized trial study.

Sci Rep

October 2024

Research Laboratory Education, Motricité, Sport et Santé, LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia.

The current study aimed to explore the effect of daily caffeine supplementation (100 mg/day) and 12-week of Zumba training on functional performances in middle-aged women. Eighty-five middle-aged women were randomized into 4 groups including control, Zumba training (ZT), caffeine supplementation (Ca) or caffeine-Zumba training (Ca + ZT) groups. Functional performances were assessed using 10 m Walk, Timed Up and Go, Functional Reach, and 30-Second Chair Stand tests.

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