showing 36 of ~574560 from 574555 documents
Peri-Implant Behavior of Tissue Level Dental Implants with a Convergent Neck
2021
Introduction: The aim of this retrospective study was to analyze the radiographic peri-implant bone loss of bone level implants and tissue level implants with a convergent neck in screw-retained single crowns and in screw-retained fixed partial prostheses, after two years of functional loading. Materials and methods: The sample was divided into two groups according to their type: Group I: supracrestal implants with convergent transmucosal neck
Who is responsible for interventions against problematic comments? Comparing user attitudes in Germany and the United States
2021
P -wave nucleon-pion scattering amplitude in the Δ(1232) channel from lattice QCD
2021
We determine the $\mathrm{\ensuremath{\Delta}}(1232)$ resonance parameters using lattice QCD and the L\"uscher method. The resonance occurs in elastic pion-nucleon scattering with ${J}^{P}=3/{2}^{+}$ in the isospin $I=3/2$, $P$-wave channel. Our calculation is performed with ${N}_{f}=2+1$ flavors of clover fermions on a lattice with $L\ensuremath{\approx}2.8\text{ }\text{ }\mathrm{fm}$. The pion and nucleon masses are ${m}_{\ensuremath{\pi}}=255.4(1.6)\text{ }\text{ }\mathrm{MeV}$ and ${m}_{N}=1073(5)\text{ }\text{ }\mathrm{MeV}$, respectively, and the strong decay channel $\mathrm{\ensuremath{\Delta}}\ensuremath{\rightarrow}\ensuremath{\pi}N$ is found to be above the threshold. To thorough…
Maternal and paternal psychological control and adolescents' negative adjustment: A dyadic longitudinal study in three countries.
2021
Psychological Control (PC) interferes with autonomy-related processes in adolescence and has a negative impact on adolescents’ development related to internalizing and externalizing problems. Several scholars suggested that PC can be used differently by mothers and fathers. However, these differences are still understudied and mainly grounded on maternal and/or adolescents’ perspectives, leading to potentially incomplete inferences on the effects of PC. The present study extends previous research on PC in two directions. First, we tested the dyadic and cumulative effects of maternal and paternal PC on adolescents’ antisocial behaviors and anxious-depressive symptoms. Secondly, we explored t…
A study of Type B uncertainties associated with the photoelectric effect in low-energy Monte Carlo simulations
2021
The goal of this manuscript is to estimate Type B uncertainties in absorbed-dose calculations arising from the different implementations in current state-of-the-art Monte Carlo codes of low-energy photon cross-sections (<200 keV). Monte Carlo simulations are carried out using three codes widely used in the low-energy domain: PENELOPE-2018, EGSnrc, and MCNP. Mass energy-absorption coefficients for water, air, graphite, and their respective ratios; absorbed dose; and photon-fluence spectra are considered. Benchmark simulations using similar cross-sections have been performed. The differences observed between these quantities when different cross-sections are considered are taken to be a go…
Cilvēks orķestris - Jānis Ilsters
2021
Raksts par Jāni Ilsteru (1851-1889), latviešu botāniķi, pedagogu, dzejnieku, lauksaimnieku, folkloristu, novadpētnieku un pirmās botānikas mācību grāmatas latviešu valodā autoru, informatīvie materiāli par kuru un daļa no viņa ievāktā herbārija glabājas Latvijas Universitātes Muzeja Botānikas un mikoloģijas kolekcijās.
Productivity analysis of Latvian companies using ORBIS database
2021
International audience; This research study uses ORBIS microdata at the company level to analyse productivity of 167 thousand economically active Latvian companies over 2011-2018. The aim of the study is twofold-to find factors consistently associated with productivity at the company level; and to recommend possible criteria for companies to receive a state support (from the view of enhancing aggregate productivity in the long term). Our research results show that productivity of Latvian companies is positively related to their size, age, as well as location closer to Riga and other big cities. However, there is a substantial within-group variation in productivity between companies. Multiva…
Coplanar Indirect-Navigated Intraoperative Ultrasound: Matching Un-navigated Probes With Neuronavigation During Neurosurgical Procedures. How We Do I…
2021
BACKGROUND Intraoperative ultrasound (IOUS) is becoming more and more adopted in neurosurgery, since it has been associated to greater extent of resection (EOR) and to gross total resection (GTR) during brain tumor surgery. IOUS main limitations are spatial resolution, width and orientation of the field of view and scan quality, which are operator-dependent. Furthermore, most neurosurgeons are not confident with this technique, which needs a long learning curve in order to identify and interpret anatomic structures. OBJECTIVE To describe an effective procedure to take advantages of both IOUS and neuronavigation in case of lack of a navigated ultrasound system. METHODS We propose a reliable …
Helminth Infection of the Loggerhead Sea Turtle Caretta caretta along the Coasts of Sicily and the North West Adriatic Sea
2021
We provide new data on the presence of helminth parasites in 64 individual loggerhead sea turtles Caretta caretta stranded along the coasts of Sicily and the northwest Adriatic Sea between June 2014 and August 2016. The necropsy examination revealed 31 individuals (48.4%) positive for endoparasites, showing a greater prevalence of trematodes than nematodes. In particular, seven species and a single genus of Trematoda (Hapalotrema) and a single species and genus of Nematoda (Kathlania) were identified. Among the Digenea flukes the species with the highest prevalence of infection were Rhytidodes gelatinosus (34.6%) and Hapalotrema sp. (33.3%), while among the Nematoda they were Kathlania sp. …
Changes in Sitting Time, Screen Exposure and Physical Activity during COVID-19 Lockdown in South American Adults: A Cross-Sectional Study
2021
The worldwide prevalence of insufficient physical activity (PA) and prolonged sedentary behavior (SB) were high before the coronavirus (COVID-19) pandemic. Measures that were taken by governments (such as home confinement) to control the spread of COVID-19 may have affected levels of PA and SB. This cross-sectional study among South American adults during the first months of COVID-19 aims to (i) compare sitting time (ST), screen exposure, moderate PA (MPA), vigorous PA (VPA), and moderate-to-vigorous PA (MVPA) before and during lockdown to sociodemographic correlates and (ii) to assess the impact of lockdown on combinations of groups reporting meeting/not-meeting PA recommendations and enga…
Reducing the Time to Detect Cyber Attacks : Combining Attack Simulation With Detection Logic
2021
Cyber attacks have become harder to detect, causing the average detection time of a successful data breach to be over six months and typically costing the target organization nearly four million dollars. The attacks are becoming more sophisticated and targeted, leaving unprepared environments easy prey for the attackers. Organizations with working antivirus systems and firewalls may be surprised when they discover their network has been encrypted by a ransomware operator. This raises a serious question, how did the attacks go undetected? The conducted research focuses on the most common pitfalls regarding late or even non-existent detection by defining the root cause behind the failed detec…
A non-stationary relay-based 3D MIMO channel model with time-variant path gains for human activity recognition in indoor environments
2021
AbstractExtensive research showed that the physiological response of human tissue to exposure to low-frequency electromagnetic fields is the induction of an electric current in the body segments. As a result, each segment of the human body behaves as a relay, which retransmits the radio-frequency (RF) signal. To investigate the impact of this phenomenon on the Doppler characteristics of the received RF signal, we introduce a new three-dimensional (3D) non-stationary channel model to describe the propagation phenomenon taking place in an indoor environment. Here, the indoor space is equipped with a multiple-input multiple-output (MIMO) system. A single person is moving in the indoor space an…
false
2021
Background and objectives Music has a unique capacity to evoke both strong emotions and vivid autobiographical memories. Previous music information retrieval (MIR) studies have shown that the emotional experience of music is influenced by a combination of musical features, including tonal, rhythmic, and loudness features. Here, our aim was to explore the relationship between music-evoked emotions and music-evoked memories and how musical features (derived with MIR) can predict them both. Methods Healthy older adults (N = 113, age ≥ 60 years) participated in a listening task in which they rated a total of 140 song excerpts comprising folk songs and popular songs from 1950s to 1980s on five …
Sustainable service-learning in Physical Education teacher education: examining postural control to promote ASD children’s well-being
2021
As classrooms become more and more diverse, it is imperative to provide physical education teacher education (PETE) students with opportunities to develop competencies that promote quality education for all students. In this study, PETE students applied a physical education servicelearning (SL) program aimed at enhancing Autism Spectrum Disorder (ASD) children’s motor domain and general well-being—objectives that are connected to the third focus of the United Nations’ Sustainable Development Goals (SDGs). Traditionally, research on SL has focused on students’ outcomes, and there is a call to examine SL’s effects on service receivers, which is the gap this paper aspires to fill. The aim of t…
2021 revised algorithm for the management of knee osteoarthritis-the Chinese viewpoint.
2021
Abstract Aim The European Society for Clinical and Economic Aspects of Osteoporosis, Osteoarthritis and Musculoskeletal Diseases (ESCEO) algorithm for the management of knee osteoarthritis (OA) is available worldwide from 2014, but in 2019 an update was published. Based on this algorithm, a Working Group (WG), including ESCEO members and Chinese experts, wished to see how the new ESCEO algorithm was perceived by Chinese experts in knee OA and how it was integrated into their clinical practice. Methods A WG was held between members of the international ESCEO task force and a group of Chinese experts. Results Non-pharmacological approach should be combined with pharmacological interventions. …
Extracorporeal shock wave therapy as a potential therapeutic tool for breast cancer related lymphedema: a narrative review of in vitro, animal and cl…
2021
Background: The treatment of breast cancer related lymphedema (BCRL) focuses on the alleviation symptoms. One of the innovative, non-invasive therapies used for this condition is extracorporeal shock wave therapy (ESWT). Aim of the study: To review the available literature and evaluate the effectiveness of ESWT in the treatment of secondary lymphedema (in vitro works, animal experiments) and lymphedema associated with the treatment of breast cancer. Material and methods: The scientific literature review was conducted from October to December 2020. The review was carried out by searching scientifically recognized medical databases, including PubMed, MEDLINE and PEDro. Date restrictions were …
Efectos del uso de dispositivos de realidad virtual sobre el control postural y el cybersickness en jóvenes universitarios
2021
espanolEl objetivo principal de este estudio fue analizar los efectos de jugar con sistemas de realidad virtual sobre el control postural y el cybersickness. La muestra del estudio estaba compuesta por 21 sujetos de 18 a 30 anos de edad. Todos los sujetos jugaron con un dispositivo de realidad virtual durante 30 minutos. Ademas, todos los sujetos realizaron dos pretest (30 minutos e inmediatamente antes de la prueba) y dos postest (inmediatamente y 30 minutos despues de la prueba). El control postural estatico con ojos abiertos y cerrados y el cybersickness fueron evaluados en todas las pruebas. Los resultados mostraron diferencias significativas entre el pretest 2 y el postest 1 en tres de…
Epäfokus laadullisessa tutkimuksessa
2021
Tässä artikkelissa tarjoamme autoetnografisen katsauksen kahteen soveltavaa kielentutkimusta ja korkeakoulututkimusta yhdistelevään tutkimusprojektiin, jotka molemmat olivat pitkän, osittain varsin fokuksettoman prosessin tulosta. Näiden kahden projektin avulla esittelemme ja pohdimme sitä, miten projektit saivat alkunsa, miten ne etenivät ja miten niiden ydin kirkastui vasta useiden kollegoiden kanssa käytyjen keskusteluiden, prokrastinoinnin ja muuttuneiden suunnitelmien jälkeen – molemmissa tapauksissa lähempänä tutkimusprosessin loppua kuin sen alkua. Artikkelin tavoitteena on käsitteellistää epäfokusta laadullisessa tutkimuksessa; tuoda läpinäkyvyyttä tutkimusprosessin epälineaarisuute…
Students’ perceptions on three-way pedagogical models hybridization: contributing to the development of active identities
2021
The goal of the present study was to explore Primary Education students’ views on their involvement in a three pedagogical models’ hybridization (Health-Based Physical Education, Cooperative Learni...
The Ghost of the Hawk: Top Predator Shaping Bird Communities in Space and Time
2021
Despite the wide recognition that strongly interacting species can influence distributions of other species, species interactions are often disregarded when assessing or projecting biodiversity distributions. In particular, it remains largely uncharted the extent to which the disappearance of a keystone species cast repercussions in the species composition of future communities. We tested whether an avian top predator can exert both positive and negative effects on spatial distribution of other species, and if these effects persist even after the predator disappeared. We acquired bird count data at different distances from occupied and non-occupied nests of Northern goshawks Accipiter genti…
COVID-19 and the future of work and organisational psychology
2021
Orientation: The coronavirus disease 2019 (COVID-19) pandemic has caused a ‘coronafication’ of research and academia, including the instrumentalisation of academic research towards the demands of society and governments. Whilst an enormous number of special issues and articles are devoted on the topic, there are few fundamental reflections on how the current pandemic will affect science and work and organisational psychology in the long run.Research purpose: The current overview, written by a group of members of the Future of Work and Organisational Psychology (FOWOP) Movement, focuses on the central issues relating to work and organisational psychology that have emerged as a result of the …
Uso problemático del smartphone: el papel de los Cinco Grandes, la Tríada Oscura y la impulsividad
2021
Abstract. Este estudio examinó las relaciones entre los rasgos de personalidad de los cinco grandes (extraversión, afabilidad, neuroticismo, responsabilidad y apertura a la experiencia), la tríada oscura (maquiavelismo, psicopatía y narcisismo), la impulsividad y el uso problemático del smartphone. Doscientos dos participantes (52.48% hombres), con edades comprendidas entre los 18 y los 58 años, completaron el Ten-Item Personality Inventory, la Smartphone Addiction Scale, el Dirty Dozen y la escala de impulsividad de Plutchik. Los análisis de correlación mostraron que el uso problemático del smartphone estaba significativamente asociado a la extraversión, el neuroticismo, la impulsividad y …
Dataset and Data analysis for "Infrared based saliva screening test for COVID-19"
2021
External Modelling 1 is the Quasar .ows model to process the Source data 1 to generate the PCA plot shown in Figure 4B and loadings plots in Figure 4C. External Modelling 2 is the MCDCV-PLS-DA Matlab model that can be used in combination with PLS-Tool Box to generate the Receiver Operating Curves (ROC) and the prediction model shown in Figures 4D and 4E, respectively. Source Data 1 is for the PCA modelling. Source Data 2 for the MCDCV-PLS-DA.
Cultural and psychological variables predicting academic dishonesty: a cross-sectional study in nine countries
2021
Academic dishonesty has serious consequences for human lives, social values, and economy. The main aim of the study was to explore a model of relations between personal and cultural variables and academic dishonesty. The participants in the study were N = 2,586 individuals from nine countries (Pakistan, Israel, Italy, India, the USA, Peru, Romania, Ghana, and Poland). The authors administered the Academic Dishonesty Scale to measure academic dishonesty, the Kessler Psychological Distress Scale to measure distress, the Almost Perfect Scale – Revised to measure perfectionism, the Brief Self-Control Scale to measure self-control, and the Singelis Scale to measure independent self-construal. Th…
Electrosynthetic screening and modern optimization strategies for electrosynthesis of highly value-added products
2021
Taking a Break from News : A Five-nation Study of News Avoidance in the Digital Era
2021
This article comparatively examines news avoidance in a rapidly changing media environment. We utilize findings from a large dataset of 488 in-depth interviews with media consumers, conducted in Argentina, Finland, Israel, Japan, and the US. We aim to make a contribution to the study of news avoidance by providing a comprehensive and nuanced understanding of the drivers, practices, and patterns of news avoidance as they occur in and are shaped by a variety of national contexts. We argue that news avoidance is shaped not only by individual characteristics, but is also manifested and performed as part of specific time frames and socio-cultural factors. We distinguish two drivers of intentiona…
Changes in Surface Free Energy and Surface Conductivity of Carbon Nanotube/Polyimide Nanocomposite Films Induced by UV Irradiation.
2021
Changes in surface energy and electrical conductivity of polyimide (PI)-based nanocomposite films filled with carbon nanotubes (CNTs) induced by UV exposure are gaining considerable interest in microelectronic, aeronautical, and aerospace applications. However, the underlying mechanism of PI photochemistry and oxidation reactions induced by UV irradiation upon the surface in the presence of CNTs is still not clear. Here, we probed the interplay between CNTs and PIs under UV exposure in the surface properties of CNT/PI nanocomposite films. Changes in contact angles and surface electrical conductivity at the surface of CNT/PI nanocomposite films after UV exposure were measured. The unpaired e…
Koulutuksen ja tutkimuksen merkitys maakuntien kehityksessä
2021
3FI2
2021
Understanding the Stabilization and Tunability of Divalent Europium 2.2.2B Cryptates
2021
Lanthanides such as europium with more accessible divalent states are useful for studying redox stability afforded by macrocyclic organic ligands. Substituted cryptands, such as 2.2.2B cryptand, that increase the oxidative stability of divalent europium also provide coordination environments that support synthetic alterations of Eu(II) cryptate complexes. Two single crystal structures were obtained containing nine-coordinate Eu(II) 2.2.2B cryptate complexes that differ by a single coordination site, the occupation of which is dictated by changes in reaction conditions. A crystal structure containing a [Eu(2.2.2B)Cl]+ complex is obtained from a methanol-THF solvent mixture, while a methanol-…
Rendimiento académico en universitarios españoles: el papel de la personalidad y la procrastinación académica
2021
La procrastinación académica es un comportamiento común en la educación superior con una variedad de consecuencias negativas. El objetivo del presente estudio es investigar las relaciones entre los factores de personalidad del modelo de los cinco grandes (extraversión, neuroticismo, afabilidad, responsabilidad y apertura a la experiencia), la procrastinación académica y el rendimiento académico. Los participantes fueron 195 estudiantes universitarios españoles (77.4% mujeres y 22.6% hombres), con edades comprendidas entre los 18 y 51 años (M = 21.39; DT = 4.58). El Ten-Item Personality Inventory se utilizó para evaluar los factores de personalidad del modelo de los cinco grandes y la Academ…
A Review of Splintered Pieces from Two Lithic Assemblages in Mediterranean Europe: Grotta Della Serratura (Marina di Camerota, Italy) and Cueva de Ne…
2021
The interest of this paper lies in the analysis of variability detected within the group of splintered pieces, establishing distinctions within this broad category. A technological and traceologica...
Mora Castro, Albert (2020). Conocer para transformar. Métodos y técnicas de investigación en Trabajo Social. Valencia: Tirant Humanidades. 326 pp. IS…
2021
Understanding the social reality and the phenomena studied by Social Work, as well as other related disciplines, requires a rigorous analysis based on the scientific method. In Knowing to transform. Research Methods and Techniques in Social Work, the author invites us to reflect and delve into the multiple possibilities that research offers to obtain answers to our research questions to transform reality in the exercise of our profession. The work begins with a prologue by the professor at the University of Valencia, María Eugenia González Sanjuán, where she encourages interested people with warm words to get involved in reading the book, highlighting the relevance of social research method…
false
2021
Despite the wide recognition that strongly interacting species can influence distributions of other species, species interactions are often disregarded when assessing or projecting biodiversity distributions. In particular, it remains largely uncharted the extent to which the disappearance of a keystone species cast repercussions in the species composition of future communities. We tested whether an avian top predator can exert both positive and negative effects on spatial distribution of other species, and if these effects persist even after the predator disappeared. We acquired bird count data at different distances from occupied and non-occupied nests of Northern goshawks Accipiter genti…
Keski-Suomen yritysten historiatietoisuus
2021
Tämä raportti on osa Jyväskylän yliopiston monitieteistä Menestystä menneisyydestä -tutkimushanketta, jossa selvitetään yritysten historiatietoisuutta. Raportin teko ei olisi ollut mahdollista ilman Keski-Suomen liiton ja Business Finlandin rahoitusta – kiitos molemmille tärkeästä tuesta tutkimushankkeelle. Kiitos myös Keski-Suomen Yrittäjille ja Keski-Suomen kauppakamarille, joiden verkostojen kautta kysely levisi keskisuomalaisyrityksille. Raportti on pohjana tutkimushankkeen seuraaville vaiheille, joissa sekä syvennytään tarkemmin yksittäisten yritysten historiatietoisuuteen että laajennetaan analyysiä valtakunnalliselle tasolle.
One-Component DNA Mechanoprobes for Facile Mechanosensing in Photopolymerized Hydrogels and Elastomers.
2021
DNA mechanosensors offer unique properties for mechano-adaptive and self-reporting materials, such as programmable bond strength and geometrical strain response, tunable fluorescent strain sensing, interfacing to biological systems, and the ability to store mechanical information. However, the facile incorporation of advanced DNA motifs into polymer networks and achieving robustness in application settings remain difficult. Herein, we introduce one-component DNA mechanoprobes that can be easily polymerized into polymer hydrogels and even elastomers to allow strain-induced fluorescence sensing. The all-in-one mechanoprobe contains a DNA hairpin for programmable force sensing, an internal flu…