Hasil untuk "Science (General)"

Sandra K. Abell, Norman G. Lederman

Contents: S.K. Abell, N.G. Lederman, Preface. Part I: Science Learning. C.W. Anderson, Perspectives on Science Learning. P. Scott, H. Asoko, J. Leach, Student Conceptions and Conceptual Learning in Science. W.S. Carlsen, Language and Science Learning. T.R. Koballa, Jr., S.M. Glynn, Attitudinal and Motivational Constructs in Science Learning. B.J. Fraser, Classroom Learning Environments. L.J. Rennie, Learning Science Outside of School. Part II: Culture, Gender, and Society and Science Learning. O. Lee, A. Luykx, Science Education and Student Diversity: Race/Ethnicity, Language, Culture, and Socioeconomic Status. E. McKinley, Postcolonialism, Indigenous Students, and Science. C-J. Guo, Issues in Science Learning: An International Perspective. K. Scantlebury, D. Baker, Gender Issues in Science Education Research: Remembering Where the Difference Lies. J.R. McGinnis, G.P. Stefanich, Special Needs and Talents in Science Learning. A.C. Barton, Science Learning in Urban Settings. J.S. Oliver, Rural Science Education. Part III: Science Teaching. D. Treagust, General Instructional Methods and Strategies. V.N. Lunetta, A. Hoftein, M.P. Clough, Learning and Teaching in the School Science Laboratory: An Analysis of Research, Theory, and Practice. G.J. Kelly, Discourse in Science Classrooms. N.B. Songer, Digital Resources Versus Cognitive Tools: A Discussion of Learning Science With Technology. K. Appleton, Elementary Science Teaching. C.M. Czerniak, Interdisciplinary Science Teaching. R. Lazarowitz, High School Biology Curricula Development: Implementation, Teaching, and Evaluation From the 20th to the 21st Century. R. Duit, H. Neidderer, H. Schecke, Teaching Physics. O. De Jong, K.S. Taber, Teaching and Learning the Many Faces of Chemistry. N. Orion, C.R. Ault, Jr., Learning Earth Sciences. P. Hart, Environmental Education. Part IV: Curriculum and Assessment in Science. D.A. Roberts, Scientific Literacy/Science Literacy. J.M. Atkin, P. Black, History of Curriculum Reform in Science Education in the United States and United Kingdom. R.D. Anderson, Inquiry as an Organizing Theme for Science Curricula. N.G. Lederman, Nature of Science: Past, Present, and Future. G.S. Aikenhead, Humanistic Perspectives in the Science Curriculum. J.B. Kahle, Systemic Reform: Research, Vision, and Politics. F. Lawrenz, Review of Science Education Program Evaluation. B. Bell, Classroom Assessment of Science Learning. E. Britton, S. Schneider, Large-Scale Assessments in Science Education. Part V: Science Teacher Education. J.J. Loughran, Science Teacher as Learner. M.G. Jones, G. Carter, Science Teacher Attitudes and Beliefs. S.K. Abell, Research on Science Teacher Knowledge. T. Russell, A.K. Martin, Learning to Teach Science. P.W. Hewson, Teacher Professional Development in Science. K.J. Roth, Science Teachers as Researchers.

Paulo C. T. Souza, Riccardo Alessandri, J. Barnoud et al.

Jiaqi Xiong, Orly Lipsitz, F. Nasri et al.

Background As a major virus outbreak in the 21st century, the Coronavirus disease 2019 (COVID-19) pandemic has led to unprecedented hazards to mental health globally. While psychological support is being provided to patients and healthcare workers, the general public's mental health requires significant attention as well. This systematic review aims to synthesize extant literature that reports on the effects of COVID-19 on psychological outcomes of the general population and its associated risk factors. Methods A systematic search was conducted on PubMed, Embase, Medline, Web of Science, and Scopus from inception to 17 May 2020 following the PRISMA guidelines. A manual search on Google Scholar was performed to identify additional relevant studies. Articles were selected based on the predetermined eligibility criteria. Results: Relatively high rates of symptoms of anxiety (6.33% to 50.9%), depression (14.6% to 48.3%), post-traumatic stress disorder (7% to 53.8%), psychological distress (34.43% to 38%), and stress (8.1% to 81.9%) are reported in the general population during the COVID-19 pandemic in China, Spain, Italy, Iran, the US, Turkey, Nepal, and Denmark. Risk factors associated with distress measures include female gender, younger age group (≤40 years), presence of chronic/psychiatric illnesses, unemployment, student status, and frequent exposure to social media/news concerning COVID-19. Limitations A significant degree of heterogeneity was noted across studies. Conclusions The COVID-19 pandemic is associated with highly significant levels of psychological distress that, in many cases, would meet the threshold for clinical relevance. Mitigating the hazardous effects of COVID-19 on mental health is an international public health priority.

N. Salari, A. Hosseinian-Far, R. Jalali et al.

Background The COVID-19 pandemic has had a significant impact on public mental health. Therefore, monitoring and oversight of the population mental health during crises such as a panedmic is an immediate priority. The aim of this study is to analyze the existing research works and findings in relation to the prevalence of stress, anxiety and depression in the general population during the COVID-19 pandemic. Method In this systematic review and meta-analysis, articles that have focused on stress and anxiety prevalence among the general population during the COVID-19 pandemic were searched in the Science Direct, Embase, Scopus, PubMed, Web of Science (ISI) and Google Scholar databases, without a lower time limit and until May 2020. In order to perform a meta-analysis of the collected studies, the random effects model was used, and the heterogeneity of studies was investigated using the I 2 index. Moreover. data analysis was conducted using the Comprehensive Meta-Analysis (CMA) software. Results The prevalence of stress in 5 studies with a total sample size of 9074 is obtained as 29.6% (95% confidence limit: 24.3–35.4), the prevalence of anxiety in 17 studies with a sample size of 63,439 as 31.9% (95% confidence interval: 27.5–36.7), and the prevalence of depression in 14 studies with a sample size of 44,531 people as 33.7% (95% confidence interval: 27.5–40.6). Conclusion COVID-19 not only causes physical health concerns but also results in a number of psychological disorders. The spread of the new coronavirus can impact the mental health of people in different communities. Thus, it is essential to preserve the mental health of individuals and to develop psychological interventions that can improve the mental health of vulnerable groups during the COVID-19 pandemic.

David Silver, T. Hubert, Julian Schrittwieser et al.

One program to rule them all Computers can beat humans at increasingly complex games, including chess and Go. However, these programs are typically constructed for a particular game, exploiting its properties, such as the symmetries of the board on which it is played. Silver et al. developed a program called AlphaZero, which taught itself to play Go, chess, and shogi (a Japanese version of chess) (see the Editorial, and the Perspective by Campbell). AlphaZero managed to beat state-of-the-art programs specializing in these three games. The ability of AlphaZero to adapt to various game rules is a notable step toward achieving a general game-playing system. Science, this issue p. 1140; see also pp. 1087 and 1118 AlphaZero teaches itself to play three different board games and beats state-of-the-art programs in each. The game of chess is the longest-studied domain in the history of artificial intelligence. The strongest programs are based on a combination of sophisticated search techniques, domain-specific adaptations, and handcrafted evaluation functions that have been refined by human experts over several decades. By contrast, the AlphaGo Zero program recently achieved superhuman performance in the game of Go by reinforcement learning from self-play. In this paper, we generalize this approach into a single AlphaZero algorithm that can achieve superhuman performance in many challenging games. Starting from random play and given no domain knowledge except the game rules, AlphaZero convincingly defeated a world champion program in the games of chess and shogi (Japanese chess), as well as Go.

Agustí Verde Parera, Xavier Costa

Presentacio sobre l'Oficina de Proteccio de Dades Personals de la UAB i la politica Open Science. Va formar part de la conferencia "Les politiques d'Open Data / Open Acces: Implicacions a la recerca" orientada a investigadors i gestors de projectes europeus que va tenir lloc el 20 de setembre de 2018 a la Universitat Autonoma de Barcelona

J. Wilby

L. D. de Beer, L. van der Vaart, Maximiliano Escaffi‐Schwarz et al.

Abstract: This study sought to investigate the measurement properties of a “gold standard” instrument for measuring burnout, the Maslach Burnout Inventory – General Survey (MBI-GS), with a systematic literature review and meta-analysis of studies that had as the primary aim its psychometric validation. The search spanned from January 1996 to December 2022 using the following databases: Web of Science, Scopus, PubMed, APA PsychINFO, ScienceDirect, and ProQuest Dissertations and Theses Global. Our search identified 35 eligible studies for inclusion in the systematic review. Of these, 17 were included in the meta-analysis. The meta-analysis of the original 16-item version studies supported a three-dimensional representation of burnout with modest internal consistencies. However, similar to the narrative findings, it also indicated the viability of a two-factor solution. Consequently, the structural validity of the MBI-GS remains unclear, and so does its cross-cultural validity. The criterion validity of the cynicism and personal efficacy scales also raised a few questions. Overall, the findings provided some support for the adequacy of the measurement properties of the MBI-GS as a research tool measuring exhaustion, cynicism, and professional efficacy. However, we also identified challenges and practices of which researchers should be cognisant and that they should consider in future burnout projects.

S. Bianchini, Moritz Müller, Pierre Pelletier

Semonti Banik, Sajal Chandra Banik, Sarker Safat Mahmud

ABSTRACT The essential factor in developing multi‐robot systems is the generation of an optimal path for task completion by multiple robots. To ensure effective path planning, this paper studies the recent publications and provides a detailed review of the path planning approaches to avoid collisions in uncertain environments. In this article, path‐planning approaches for multiple robots are categorized primarily into classical, heuristic, and artificial intelligence‐based methods. Among the heuristic approaches, bio‐inspired approaches are mostly employed to optimize the classical approaches to enhance their adaptability. The articles are analyzed based on static and dynamic scenarios, real‐time experiments, and simulations involving hybrid solutions. The increasing focus on using hybrid approaches in dynamic environments is found mostly in the papers employing heuristic and AI‐based approaches. In real‐time applications, AI‐based approaches are highly implemented in comparison to heuristic and classical approaches. Moreover, the findings from this review, highlighting the strengths and drawbacks of each algorithm, can help researchers select the appropriate approach to overcome the limitations in designing efficient multi‐robot systems.

Lesley-anne Ey, Neil Tippett, Elspeth McInnes et al.

Background: Schools are often at the forefront of needing to identify and respond to harmful sexual behavior (HSB). However, there is limited understanding about what training and resources Australian teachers receive on HSB or what they need. Objective: To explore Catholic Education staff's preparedness and their training and resource needs for identifying and responding to HSB in education settings. Participants: and Setting: Seventy-four Catholic education staff answered an online survey, and a further 14 Catholic education pastoral care and leadership staff engaged in single. Method: Online survey and single interviews. Findings: Overall, participants felt most prepared to identify HSB and provide an immediate response to HSB, while they felt least prepared to respond to the parental community and to the families of children affected by HSB. Notably, teachers felt the least prepared to provide ongoing support to children affected by HSB and to respond to families and the parental community in matters concerning HSB. Participants called for training and resources to better support education staff in identifying and responding to HSB. Conclusion: This research has demonstrated that Catholic Education staff feel better prepared in identifying and responding to several elements of HSB than previous research with teachers has indicated, however they still feel inadequate in ongoing responses to children affected by HSB and in responding to parents.

Baskar Venkidasamy, Ashok Kumar Balaraman, Muthu Thiruvengadan

Laura Izquierdo Sanchez, Julen Matin Robles, Jone Narbaiza et al.

Introduction and Objectives: Cholangiocarcinoma (CCA) incidence and mortality are rising globally. Chronic liver diseases (CLD) are recognized risk factors. This study aimed to compare the clinical presentation and outcomes of CCA in patients with and without CLD, using data from the International CCA Registry. Patients and Methods: The international CCA Registry is a multicenter observational study enrolling cases from 54 centers across Latin America, Europe, and Asia (2010–2024). Results: Among 3,693 patients enrolled, 916 had CLD and 2,777 did not. Common CLD conditions were fatty liver disease, cirrhosis, viral hepatitis, and primary sclerosing cholangitis. Compared to non-CLD patients, those with CLD were more often male (69% vs. 53%), younger at diagnosis (63 vs. 66 years), and had higher rates of metabolic risk factors, alcohol use, and smoking. Intrahepatic CCA was more frequent in CLD patients (64% vs. 43%), whereas distal CCA was more common in non-CLD cases (20% vs. 9%). CLD patients had better performance status (ECOG 0: 53% vs. 35%), lower CA19-9 levels (59.0 vs. 134.5 U/mL), and more localized disease (56% vs. 48%). Curative-intent surgery was more frequent in the CLD group (59% vs. 48%), translating into longer median overall survival (12.3 vs. 11.0 months) and higher 5-year survival (OR = 1.67; p < 0.001). The benefit was especially evident in intrahepatic CCA. Treatment responses were comparable between groups. Conclusions: CCA is diagnosed at earlier stages in individuals with CLD, likely due to certain clinical surveillance, leading to better prognosis. Prospective validation and standardized surveillance protocols are warrant.

Jigar Joshi, Bhavin Dudhia, Dhaval Mehta et al.

Introduction: Fully detect risks of nerve damage, which can lead to temporary or permanent issues. Cone-beam computed tomography (CBCT) offers a three-dimensional (3D) view, providing more detailed visualisation of anatomical structures and their spatial relationships, which improves the accuracy of predicting nerve exposure. The study aims to evaluate and compare these imaging techniques’ effectiveness in categorising the relationship between third molars and the inferior alveolar canal, emphasising the importance of precise imaging for safer surgical outcomes. Materials and Methods: A pilot study involving 20 patients, representing 10% of the total sample size of 200, was conducted at Ahmedabad Dental College’s Department of Oral Medicine and Radiology. Investigators, trained to interpret radiological images from orthopantomography (OPG) and CBCT, compared their interpretations with those of two experts. A high inter-rater reliability was confirmed with a kappa statistic of 0.98. Following ethical approval, data were retrospectively collected from 20 cases, with digital OPG and CBCT images analysed and classified according to established criteria. Results: The results revealed a significant association between the results diagnosed through OPG and CBCT indicating similarity in their diagnosis. It was also seen that there was no bias towards the gender and the distribution was similar in case of diagnosis through OPG or CBCT. Conclusion: CBCT demands an in-depth understanding of anatomy and pathology, coupled with proficiency in operating imaging software and the ability to identify abnormalities in cross-sectional images. When executed and interpreted accurately, CBCT proves to be an exceptionally valuable tool in clinical dental practice. Its detailed 3D imaging capabilities enhance the assessment of complex cases, such as those involving intricate anatomical structures and pathologies. By providing comprehensive views that surpass traditional two-dimensional imaging, CBCT aids in precise diagnosis and treatment planning, making it an indispensable resource for addressing various dental conditions effectively.

Bhal Chandra Joshi, Aris Karastergiou, Marta Burgay et al.

The large instantaneous sensitivity, a wide frequency coverage and flexible observation modes with large number of beams in the sky are the main features of the SKA observatory's two telescopes, the SKA-Low and the SKA-Mid, which are located on two different continents. Owing to these capabilities, the SKAO telescopes are going to be a game-changer for radio astronomy in general and pulsar astronomy in particular. The eleven articles in this special issue on pulsar science with the SKA Observatory describe its impact on different areas of pulsar science. In this lead article, a brief description of the two telescopes highlighting the relevant features for pulsar science is presented followed by an overview of each accompanying article, exploring the inter-relationship between different pulsar science use cases.

Mauve Science Collaboration, Marcel Agueros, Don Dixon et al.

Mauve is a low-cost small satellite developed and operated by Blue Skies Space Ltd. The payload features a 13 cm telescope connected with a fibre that feeds into a UV-Vis spectrometer. The detector covers the 200-700 nm range in a single shot, obtaining low resolution spectra at R~20-65. Mauve has launched on 28th November 2025, reaching a 510 km Low-Earth Sun-synchronous orbit. The satellite will enable UV and visible observations of a variety of stellar objects in our Galaxy, filling the gaps in the ultraviolet space-based data. The researchers that have already joined the mission have defined the science themes, observational strategy and targets that Mauve will observe in the first year of operations. To date 10 science themes have been developed by the Mauve science collaboration for year 1, with observational strategies that include both long duration monitoring and short cadence snapshots. Here, we describe these themes and the science that Mauve will undertake in its first year of operations.

Lei Chen, Mengna Peng, Wei He et al.

Abstract The presence of bacterial biofilms and the occurrence of excessive inflammatory response greatly imped the healing process of chronic wounds in diabetic patients. However, effective strategies to simultaneously address these issues are still lacking. Here, a microenvironment‐adaptive nanodecoy (GC@Pd) is constructed via the coordination and in situ reduction of palladium ions on gallic acid‐modified chitosan (GC) to promote wound healing by synergistic biofilm eradication, inflammation alleviation, and immunoregulation. During the weakly acidic conditions of the biofilm infection stage, GC@Pd serves as a nanodecoy to induce bacterial aggregation. Subsequently, through its oxidase‐like activity generating reactive oxygen species and the hyperthermia from photothermal effects, it effectively eliminates the biofilm. As the local microenvironment of diabetic wounds transitions to an alkaline inflammatory state, the enzyme‐like activity of GC@Pd adapts to catalase‐like activity, effectively eliminating reactive oxygen species at the site of inflammation. Additionally, GC@Pd could selectively capture pro‐inflammatory cytokines through Michael addition reactions. In vivo experiments and transcriptomic analysis confirmed that GC@Pd could accelerate the wound transition from inflammatory to proliferative phase by eliminating biofilm infection and reducing the inflammatory response, thus promoting diabetic chronic wound healing. The nanodecoy provides a potential therapeutic strategy for treating biofilm‐infected diabetic chronic wounds.

GREX-PLUS Science Team, :, Akio K. Inoue et al.

GREX-PLUS (Galaxy Reionization EXplorer and PLanetary Universe Spectrometer) is a mission candidate for a JAXA's strategic L-class mission to be launched in the 2030s. Its primary sciences are two-fold: galaxy formation and evolution and planetary system formation and evolution. The GREX-PLUS spacecraft will carry a 1.2 m primary mirror aperture telescope cooled down to 50 K. The two science instruments will be onboard: a wide-field camera in the 2-8 $μ$m wavelength band and a high resolution spectrometer with a wavelength resolution of 30,000 in the 10-18 $μ$m band. The GREX-PLUS wide-field camera aims to detect the first generation of galaxies at redshift $z>15$. The GREX-PLUS high resolution spectrometer aims to identify the location of the water ``snow line'' in proto-planetary disks. Both instruments will provide unique data sets for a broad range of scientific topics including galaxy mass assembly, origin of supermassive blackholes, infrared background radiation, molecular spectroscopy in the interstellar medium, transit spectroscopy for exoplanet atmosphere, planetary atmosphere in the Solar system, and so on.